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); | |
f062eb6c BS |
83 | #ifdef CONFIG_NFS_V4_1 |
84 | static int nfs41_test_stateid(struct nfs_server *, struct nfs4_state *); | |
85 | static int nfs41_free_stateid(struct nfs_server *, struct nfs4_state *); | |
86 | #endif | |
1da177e4 | 87 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 88 | static int nfs4_map_errors(int err) |
1da177e4 | 89 | { |
52567b03 TM |
90 | if (err >= -1000) |
91 | return err; | |
92 | switch (err) { | |
93 | case -NFS4ERR_RESOURCE: | |
94 | return -EREMOTEIO; | |
7ebb9315 BS |
95 | case -NFS4ERR_WRONGSEC: |
96 | return -EPERM; | |
3ddeb7c5 TM |
97 | case -NFS4ERR_BADOWNER: |
98 | case -NFS4ERR_BADNAME: | |
99 | return -EINVAL; | |
52567b03 | 100 | default: |
1da177e4 | 101 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 102 | __func__, -err); |
52567b03 | 103 | break; |
1da177e4 | 104 | } |
52567b03 | 105 | return -EIO; |
1da177e4 LT |
106 | } |
107 | ||
108 | /* | |
109 | * This is our standard bitmap for GETATTR requests. | |
110 | */ | |
111 | const u32 nfs4_fattr_bitmap[2] = { | |
112 | FATTR4_WORD0_TYPE | |
113 | | FATTR4_WORD0_CHANGE | |
114 | | FATTR4_WORD0_SIZE | |
115 | | FATTR4_WORD0_FSID | |
116 | | FATTR4_WORD0_FILEID, | |
117 | FATTR4_WORD1_MODE | |
118 | | FATTR4_WORD1_NUMLINKS | |
119 | | FATTR4_WORD1_OWNER | |
120 | | FATTR4_WORD1_OWNER_GROUP | |
121 | | FATTR4_WORD1_RAWDEV | |
122 | | FATTR4_WORD1_SPACE_USED | |
123 | | FATTR4_WORD1_TIME_ACCESS | |
124 | | FATTR4_WORD1_TIME_METADATA | |
125 | | FATTR4_WORD1_TIME_MODIFY | |
126 | }; | |
127 | ||
128 | const u32 nfs4_statfs_bitmap[2] = { | |
129 | FATTR4_WORD0_FILES_AVAIL | |
130 | | FATTR4_WORD0_FILES_FREE | |
131 | | FATTR4_WORD0_FILES_TOTAL, | |
132 | FATTR4_WORD1_SPACE_AVAIL | |
133 | | FATTR4_WORD1_SPACE_FREE | |
134 | | FATTR4_WORD1_SPACE_TOTAL | |
135 | }; | |
136 | ||
4ce79717 | 137 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
138 | FATTR4_WORD0_MAXLINK |
139 | | FATTR4_WORD0_MAXNAME, | |
140 | 0 | |
141 | }; | |
142 | ||
dae100c2 | 143 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
144 | | FATTR4_WORD0_MAXREAD |
145 | | FATTR4_WORD0_MAXWRITE | |
146 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 147 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
148 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
149 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
150 | }; |
151 | ||
830b8e33 MN |
152 | const u32 nfs4_fs_locations_bitmap[2] = { |
153 | FATTR4_WORD0_TYPE | |
154 | | FATTR4_WORD0_CHANGE | |
155 | | FATTR4_WORD0_SIZE | |
156 | | FATTR4_WORD0_FSID | |
157 | | FATTR4_WORD0_FILEID | |
158 | | FATTR4_WORD0_FS_LOCATIONS, | |
159 | FATTR4_WORD1_MODE | |
160 | | FATTR4_WORD1_NUMLINKS | |
161 | | FATTR4_WORD1_OWNER | |
162 | | FATTR4_WORD1_OWNER_GROUP | |
163 | | FATTR4_WORD1_RAWDEV | |
164 | | FATTR4_WORD1_SPACE_USED | |
165 | | FATTR4_WORD1_TIME_ACCESS | |
166 | | FATTR4_WORD1_TIME_METADATA | |
167 | | FATTR4_WORD1_TIME_MODIFY | |
168 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
169 | }; | |
170 | ||
bc4785cd | 171 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
172 | struct nfs4_readdir_arg *readdir) |
173 | { | |
0dbb4c67 | 174 | __be32 *start, *p; |
1da177e4 LT |
175 | |
176 | BUG_ON(readdir->count < 80); | |
177 | if (cookie > 2) { | |
b7ef1956 | 178 | readdir->cookie = cookie; |
1da177e4 LT |
179 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
180 | return; | |
181 | } | |
182 | ||
183 | readdir->cookie = 0; | |
184 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
185 | if (cookie == 2) | |
186 | return; | |
187 | ||
188 | /* | |
189 | * NFSv4 servers do not return entries for '.' and '..' | |
190 | * Therefore, we fake these entries here. We let '.' | |
191 | * have cookie 0 and '..' have cookie 1. Note that | |
192 | * when talking to the server, we always send cookie 0 | |
193 | * instead of 1 or 2. | |
194 | */ | |
0dbb4c67 | 195 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
196 | |
197 | if (cookie == 0) { | |
198 | *p++ = xdr_one; /* next */ | |
199 | *p++ = xdr_zero; /* cookie, first word */ | |
200 | *p++ = xdr_one; /* cookie, second word */ | |
201 | *p++ = xdr_one; /* entry len */ | |
202 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
203 | p++; | |
204 | *p++ = xdr_one; /* bitmap length */ | |
205 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
206 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 207 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
208 | } |
209 | ||
210 | *p++ = xdr_one; /* next */ | |
211 | *p++ = xdr_zero; /* cookie, first word */ | |
212 | *p++ = xdr_two; /* cookie, second word */ | |
213 | *p++ = xdr_two; /* entry len */ | |
214 | memcpy(p, "..\0\0", 4); /* entry */ | |
215 | p++; | |
216 | *p++ = xdr_one; /* bitmap length */ | |
217 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
218 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 219 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
220 | |
221 | readdir->pgbase = (char *)p - (char *)start; | |
222 | readdir->count -= readdir->pgbase; | |
223 | kunmap_atomic(start, KM_USER0); | |
224 | } | |
225 | ||
65de872e TM |
226 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
227 | { | |
228 | int res; | |
229 | ||
230 | might_sleep(); | |
231 | ||
e005e804 | 232 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 233 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
234 | return res; |
235 | } | |
236 | ||
237 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
238 | { | |
239 | int res = 0; | |
240 | ||
241 | might_sleep(); | |
242 | ||
243 | if (*timeout <= 0) | |
244 | *timeout = NFS4_POLL_RETRY_MIN; | |
245 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
246 | *timeout = NFS4_POLL_RETRY_MAX; | |
247 | schedule_timeout_killable(*timeout); | |
248 | if (fatal_signal_pending(current)) | |
249 | res = -ERESTARTSYS; | |
250 | *timeout <<= 1; | |
251 | return res; | |
252 | } | |
253 | ||
254 | /* This is the error handling routine for processes that are allowed | |
255 | * to sleep. | |
256 | */ | |
b064eca2 | 257 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
258 | { |
259 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 260 | struct nfs4_state *state = exception->state; |
65de872e TM |
261 | int ret = errorcode; |
262 | ||
263 | exception->retry = 0; | |
264 | switch(errorcode) { | |
265 | case 0: | |
266 | return 0; | |
9e33bed5 TM |
267 | case -NFS4ERR_ADMIN_REVOKED: |
268 | case -NFS4ERR_BAD_STATEID: | |
269 | case -NFS4ERR_OPENMODE: | |
270 | if (state == NULL) | |
271 | break; | |
0400a6b0 TM |
272 | nfs4_schedule_stateid_recovery(server, state); |
273 | goto wait_on_recovery; | |
0ced63d1 TM |
274 | case -NFS4ERR_EXPIRED: |
275 | if (state != NULL) | |
276 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 277 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 278 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
279 | nfs4_schedule_lease_recovery(clp); |
280 | goto wait_on_recovery; | |
03391693 | 281 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
282 | case -NFS4ERR_BADSESSION: |
283 | case -NFS4ERR_BADSLOT: | |
284 | case -NFS4ERR_BAD_HIGH_SLOT: | |
285 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
286 | case -NFS4ERR_DEADSESSION: | |
287 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
288 | case -NFS4ERR_SEQ_MISORDERED: | |
289 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
290 | errorcode); | |
0400a6b0 | 291 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 | 292 | exception->retry = 1; |
b9179237 | 293 | break; |
03391693 | 294 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 295 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
296 | if (exception->timeout > HZ) { |
297 | /* We have retried a decent amount, time to | |
298 | * fail | |
299 | */ | |
300 | ret = -EBUSY; | |
301 | break; | |
302 | } | |
65de872e TM |
303 | case -NFS4ERR_GRACE: |
304 | case -NFS4ERR_DELAY: | |
2c643488 | 305 | case -EKEYEXPIRED: |
65de872e TM |
306 | ret = nfs4_delay(server->client, &exception->timeout); |
307 | if (ret != 0) | |
308 | break; | |
a8a4ae3a | 309 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
310 | case -NFS4ERR_OLD_STATEID: |
311 | exception->retry = 1; | |
b064eca2 TM |
312 | break; |
313 | case -NFS4ERR_BADOWNER: | |
314 | /* The following works around a Linux server bug! */ | |
315 | case -NFS4ERR_BADNAME: | |
316 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
317 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
318 | exception->retry = 1; | |
319 | printk(KERN_WARNING "NFS: v4 server %s " | |
320 | "does not accept raw " | |
321 | "uid/gids. " | |
322 | "Reenabling the idmapper.\n", | |
323 | server->nfs_client->cl_hostname); | |
324 | } | |
65de872e TM |
325 | } |
326 | /* We failed to handle the error */ | |
327 | return nfs4_map_errors(ret); | |
0400a6b0 | 328 | wait_on_recovery: |
a2c0b9e2 TM |
329 | ret = nfs4_wait_clnt_recover(clp); |
330 | if (ret == 0) | |
331 | exception->retry = 1; | |
332 | return ret; | |
65de872e TM |
333 | } |
334 | ||
335 | ||
452e9352 | 336 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 337 | { |
1da177e4 LT |
338 | spin_lock(&clp->cl_lock); |
339 | if (time_before(clp->cl_last_renewal,timestamp)) | |
340 | clp->cl_last_renewal = timestamp; | |
341 | spin_unlock(&clp->cl_lock); | |
342 | } | |
343 | ||
452e9352 TM |
344 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
345 | { | |
346 | do_renew_lease(server->nfs_client, timestamp); | |
347 | } | |
348 | ||
cccef3b9 AA |
349 | #if defined(CONFIG_NFS_V4_1) |
350 | ||
e2c4ab3c AA |
351 | /* |
352 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
353 | * | |
354 | * freeing a slot is trivially done by clearing its respective bit | |
355 | * in the bitmap. | |
356 | * If the freed slotid equals highest_used_slotid we want to update it | |
357 | * so that the server would be able to size down the slot table if needed, | |
358 | * otherwise we know that the highest_used_slotid is still in use. | |
359 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
360 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
361 | * highest slotid in use. | |
362 | * If none found, highest_used_slotid is set to -1. | |
35dc1d74 TM |
363 | * |
364 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
365 | */ |
366 | static void | |
dfb4f309 | 367 | nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot) |
e2c4ab3c | 368 | { |
dfb4f309 | 369 | int free_slotid = free_slot - tbl->slots; |
e2c4ab3c AA |
370 | int slotid = free_slotid; |
371 | ||
dfb4f309 | 372 | BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
373 | /* clear used bit in bitmap */ |
374 | __clear_bit(slotid, tbl->used_slots); | |
375 | ||
376 | /* update highest_used_slotid when it is freed */ | |
377 | if (slotid == tbl->highest_used_slotid) { | |
378 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 379 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
380 | tbl->highest_used_slotid = slotid; |
381 | else | |
382 | tbl->highest_used_slotid = -1; | |
383 | } | |
e2c4ab3c AA |
384 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, |
385 | free_slotid, tbl->highest_used_slotid); | |
386 | } | |
387 | ||
3bfb0fc5 | 388 | /* |
42acd021 | 389 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 390 | */ |
42acd021 | 391 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 392 | { |
689cf5c1 AB |
393 | struct rpc_task *task; |
394 | ||
a2118c33 | 395 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
689cf5c1 AB |
396 | task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq); |
397 | if (task) | |
398 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
3bfb0fc5 AB |
399 | return; |
400 | } | |
401 | ||
402 | if (ses->fc_slot_table.highest_used_slotid != -1) | |
403 | return; | |
404 | ||
42acd021 AA |
405 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
406 | complete(&ses->fc_slot_table.complete); | |
407 | } | |
408 | ||
409 | /* | |
410 | * Signal state manager thread if session back channel is drained | |
411 | */ | |
412 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
413 | { | |
414 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
415 | ses->bc_slot_table.highest_used_slotid != -1) | |
416 | return; | |
417 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
418 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
419 | } |
420 | ||
d185a334 | 421 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
422 | { |
423 | struct nfs4_slot_table *tbl; | |
424 | ||
d185a334 | 425 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 426 | if (!res->sr_slot) { |
13615871 AA |
427 | /* just wake up the next guy waiting since |
428 | * we may have not consumed a slot after all */ | |
691daf3b | 429 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 430 | return; |
13615871 | 431 | } |
ea028ac9 | 432 | |
35dc1d74 | 433 | spin_lock(&tbl->slot_tbl_lock); |
dfb4f309 | 434 | nfs4_free_slot(tbl, res->sr_slot); |
42acd021 | 435 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 436 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 437 | res->sr_slot = NULL; |
13615871 AA |
438 | } |
439 | ||
14516c3a | 440 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
441 | { |
442 | unsigned long timestamp; | |
14516c3a | 443 | struct nfs_client *clp; |
b0df806c AA |
444 | |
445 | /* | |
446 | * sr_status remains 1 if an RPC level error occurred. The server | |
447 | * may or may not have processed the sequence operation.. | |
448 | * Proceed as if the server received and processed the sequence | |
449 | * operation. | |
450 | */ | |
451 | if (res->sr_status == 1) | |
452 | res->sr_status = NFS_OK; | |
453 | ||
468f8613 BS |
454 | /* don't increment the sequence number if the task wasn't sent */ |
455 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
456 | goto out; |
457 | ||
691daf3b | 458 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
459 | switch (res->sr_status) { |
460 | case 0: | |
b0df806c | 461 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 462 | ++res->sr_slot->seq_nr; |
b0df806c | 463 | timestamp = res->sr_renewal_time; |
14516c3a | 464 | clp = res->sr_session->clp; |
452e9352 | 465 | do_renew_lease(clp, timestamp); |
0629e370 | 466 | /* Check sequence flags */ |
b4410c2f TM |
467 | if (res->sr_status_flags != 0) |
468 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
469 | break; |
470 | case -NFS4ERR_DELAY: | |
471 | /* The server detected a resend of the RPC call and | |
472 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
473 | * of RFC5661. | |
474 | */ | |
12364a4f | 475 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
476 | __func__, |
477 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
478 | res->sr_slot->seq_nr); | |
14516c3a TM |
479 | goto out_retry; |
480 | default: | |
481 | /* Just update the slot sequence no. */ | |
dfb4f309 | 482 | ++res->sr_slot->seq_nr; |
b0df806c AA |
483 | } |
484 | out: | |
485 | /* The session may be reset by one of the error handlers. */ | |
486 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 487 | nfs41_sequence_free_slot(res); |
14516c3a TM |
488 | return 1; |
489 | out_retry: | |
d05dd4e9 | 490 | if (!rpc_restart_call(task)) |
14516c3a TM |
491 | goto out; |
492 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
493 | return 0; | |
b0df806c AA |
494 | } |
495 | ||
14516c3a TM |
496 | static int nfs4_sequence_done(struct rpc_task *task, |
497 | struct nfs4_sequence_res *res) | |
df896455 | 498 | { |
14516c3a TM |
499 | if (res->sr_session == NULL) |
500 | return 1; | |
501 | return nfs41_sequence_done(task, res); | |
df896455 TM |
502 | } |
503 | ||
510b8175 BH |
504 | /* |
505 | * nfs4_find_slot - efficiently look for a free slot | |
506 | * | |
507 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
508 | * If found, we mark the slot as used, update the highest_used_slotid, | |
509 | * and respectively set up the sequence operation args. | |
510 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
511 | * |
512 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
513 | */ |
514 | static u8 | |
40ead580 | 515 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 BH |
516 | { |
517 | int slotid; | |
518 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
519 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
520 | ||
510b8175 BH |
521 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
522 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
523 | tbl->max_slots); | |
524 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
525 | if (slotid >= tbl->max_slots) | |
526 | goto out; | |
527 | __set_bit(slotid, tbl->used_slots); | |
528 | if (slotid > tbl->highest_used_slotid) | |
529 | tbl->highest_used_slotid = slotid; | |
530 | ret_id = slotid; | |
531 | out: | |
532 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
533 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
534 | return ret_id; |
535 | } | |
536 | ||
dc70d7b3 | 537 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
538 | struct nfs4_sequence_args *args, |
539 | struct nfs4_sequence_res *res, | |
540 | int cache_reply, | |
541 | struct rpc_task *task) | |
542 | { | |
fbcd4abc AA |
543 | struct nfs4_slot *slot; |
544 | struct nfs4_slot_table *tbl; | |
545 | u8 slotid; | |
546 | ||
547 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 548 | /* slot already allocated? */ |
dfb4f309 | 549 | if (res->sr_slot != NULL) |
ce5039c1 AA |
550 | return 0; |
551 | ||
fbcd4abc AA |
552 | tbl = &session->fc_slot_table; |
553 | ||
554 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 555 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 556 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
ea028ac9 AA |
557 | /* |
558 | * The state manager will wait until the slot table is empty. | |
559 | * Schedule the reset thread | |
560 | */ | |
05f0d236 | 561 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 562 | spin_unlock(&tbl->slot_tbl_lock); |
bcb56164 | 563 | dprintk("%s Schedule Session Reset\n", __func__); |
05f0d236 | 564 | return -EAGAIN; |
b069d94a AA |
565 | } |
566 | ||
689cf5c1 AB |
567 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
568 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
569 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
570 | spin_unlock(&tbl->slot_tbl_lock); | |
571 | dprintk("%s enforce FIFO order\n", __func__); | |
572 | return -EAGAIN; | |
573 | } | |
574 | ||
40ead580 | 575 | slotid = nfs4_find_slot(tbl); |
fbcd4abc AA |
576 | if (slotid == NFS4_MAX_SLOT_TABLE) { |
577 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
578 | spin_unlock(&tbl->slot_tbl_lock); | |
579 | dprintk("<-- %s: no free slots\n", __func__); | |
580 | return -EAGAIN; | |
581 | } | |
582 | spin_unlock(&tbl->slot_tbl_lock); | |
583 | ||
689cf5c1 | 584 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 585 | slot = tbl->slots + slotid; |
99fe60d0 | 586 | args->sa_session = session; |
fbcd4abc AA |
587 | args->sa_slotid = slotid; |
588 | args->sa_cache_this = cache_reply; | |
589 | ||
590 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
591 | ||
99fe60d0 | 592 | res->sr_session = session; |
dfb4f309 | 593 | res->sr_slot = slot; |
fbcd4abc | 594 | res->sr_renewal_time = jiffies; |
2a6e26cd | 595 | res->sr_status_flags = 0; |
fbcd4abc AA |
596 | /* |
597 | * sr_status is only set in decode_sequence, and so will remain | |
598 | * set to 1 if an rpc level failure occurs. | |
599 | */ | |
600 | res->sr_status = 1; | |
ce5039c1 AA |
601 | return 0; |
602 | } | |
dc70d7b3 | 603 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 604 | |
035168ab | 605 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
606 | struct nfs4_sequence_args *args, |
607 | struct nfs4_sequence_res *res, | |
608 | int cache_reply, | |
609 | struct rpc_task *task) | |
610 | { | |
035168ab | 611 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
612 | int ret = 0; |
613 | ||
035168ab TM |
614 | if (session == NULL) { |
615 | args->sa_session = NULL; | |
616 | res->sr_session = NULL; | |
617 | goto out; | |
618 | } | |
619 | ||
12364a4f | 620 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
621 | __func__, session->clp, session, res->sr_slot ? |
622 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 623 | |
035168ab | 624 | ret = nfs41_setup_sequence(session, args, res, cache_reply, |
ce5039c1 | 625 | task); |
ce5039c1 AA |
626 | out: |
627 | dprintk("<-- %s status=%d\n", __func__, ret); | |
628 | return ret; | |
629 | } | |
630 | ||
631 | struct nfs41_call_sync_data { | |
035168ab | 632 | const struct nfs_server *seq_server; |
ce5039c1 AA |
633 | struct nfs4_sequence_args *seq_args; |
634 | struct nfs4_sequence_res *seq_res; | |
635 | int cache_reply; | |
636 | }; | |
637 | ||
638 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
639 | { | |
640 | struct nfs41_call_sync_data *data = calldata; | |
641 | ||
035168ab TM |
642 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
643 | ||
644 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
ce5039c1 AA |
645 | data->seq_res, data->cache_reply, task)) |
646 | return; | |
647 | rpc_call_start(task); | |
648 | } | |
649 | ||
b257957e AB |
650 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
651 | { | |
652 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
653 | nfs41_call_sync_prepare(task, calldata); | |
654 | } | |
655 | ||
69ab40c4 AA |
656 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
657 | { | |
658 | struct nfs41_call_sync_data *data = calldata; | |
659 | ||
14516c3a | 660 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
661 | } |
662 | ||
ce5039c1 AA |
663 | struct rpc_call_ops nfs41_call_sync_ops = { |
664 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 665 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
666 | }; |
667 | ||
b257957e AB |
668 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
669 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
670 | .rpc_call_done = nfs41_call_sync_done, | |
671 | }; | |
672 | ||
7c513058 BS |
673 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
674 | struct nfs_server *server, | |
ce5039c1 AA |
675 | struct rpc_message *msg, |
676 | struct nfs4_sequence_args *args, | |
677 | struct nfs4_sequence_res *res, | |
b257957e AB |
678 | int cache_reply, |
679 | int privileged) | |
ce5039c1 AA |
680 | { |
681 | int ret; | |
682 | struct rpc_task *task; | |
683 | struct nfs41_call_sync_data data = { | |
035168ab | 684 | .seq_server = server, |
ce5039c1 AA |
685 | .seq_args = args, |
686 | .seq_res = res, | |
687 | .cache_reply = cache_reply, | |
688 | }; | |
689 | struct rpc_task_setup task_setup = { | |
7c513058 | 690 | .rpc_client = clnt, |
ce5039c1 AA |
691 | .rpc_message = msg, |
692 | .callback_ops = &nfs41_call_sync_ops, | |
693 | .callback_data = &data | |
694 | }; | |
695 | ||
dfb4f309 | 696 | res->sr_slot = NULL; |
b257957e AB |
697 | if (privileged) |
698 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
699 | task = rpc_run_task(&task_setup); |
700 | if (IS_ERR(task)) | |
701 | ret = PTR_ERR(task); | |
702 | else { | |
703 | ret = task->tk_status; | |
704 | rpc_put_task(task); | |
705 | } | |
706 | return ret; | |
707 | } | |
708 | ||
7c513058 BS |
709 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
710 | struct nfs_server *server, | |
cccef3b9 AA |
711 | struct rpc_message *msg, |
712 | struct nfs4_sequence_args *args, | |
713 | struct nfs4_sequence_res *res, | |
714 | int cache_reply) | |
715 | { | |
7c513058 | 716 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, cache_reply, 0); |
cccef3b9 AA |
717 | } |
718 | ||
df896455 | 719 | #else |
14516c3a TM |
720 | static int nfs4_sequence_done(struct rpc_task *task, |
721 | struct nfs4_sequence_res *res) | |
df896455 | 722 | { |
14516c3a | 723 | return 1; |
df896455 | 724 | } |
cccef3b9 AA |
725 | #endif /* CONFIG_NFS_V4_1 */ |
726 | ||
7c513058 BS |
727 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
728 | struct nfs_server *server, | |
cccef3b9 AA |
729 | struct rpc_message *msg, |
730 | struct nfs4_sequence_args *args, | |
731 | struct nfs4_sequence_res *res, | |
732 | int cache_reply) | |
733 | { | |
f3752975 | 734 | args->sa_session = res->sr_session = NULL; |
7c513058 | 735 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
736 | } |
737 | ||
e73b83f2 | 738 | static inline |
7c513058 BS |
739 | int nfs4_call_sync(struct rpc_clnt *clnt, |
740 | struct nfs_server *server, | |
e73b83f2 BS |
741 | struct rpc_message *msg, |
742 | struct nfs4_sequence_args *args, | |
743 | struct nfs4_sequence_res *res, | |
744 | int cache_reply) | |
745 | { | |
7c513058 BS |
746 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
747 | args, res, cache_reply); | |
e73b83f2 | 748 | } |
cccef3b9 | 749 | |
38478b24 | 750 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 751 | { |
38478b24 | 752 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 753 | |
38478b24 | 754 | spin_lock(&dir->i_lock); |
40d24704 TM |
755 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
756 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 757 | nfs_force_lookup_revalidate(dir); |
40d24704 | 758 | nfsi->change_attr = cinfo->after; |
38478b24 | 759 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
760 | } |
761 | ||
e56e0b78 | 762 | struct nfs4_opendata { |
c6d00e63 | 763 | struct kref kref; |
e56e0b78 TM |
764 | struct nfs_openargs o_arg; |
765 | struct nfs_openres o_res; | |
cdd4e68b TM |
766 | struct nfs_open_confirmargs c_arg; |
767 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
768 | struct nfs_fattr f_attr; |
769 | struct nfs_fattr dir_attr; | |
e56e0b78 | 770 | struct dentry *dir; |
82a2c1b7 | 771 | struct dentry *dentry; |
e56e0b78 | 772 | struct nfs4_state_owner *owner; |
aac00a8d | 773 | struct nfs4_state *state; |
e56e0b78 | 774 | struct iattr attrs; |
26e976a8 | 775 | unsigned long timestamp; |
3e309914 | 776 | unsigned int rpc_done : 1; |
24ac23ab TM |
777 | int rpc_status; |
778 | int cancelled; | |
e56e0b78 TM |
779 | }; |
780 | ||
2ced46c2 TM |
781 | |
782 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
783 | { | |
784 | p->o_res.f_attr = &p->f_attr; | |
785 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
786 | p->o_res.seqid = p->o_arg.seqid; |
787 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
788 | p->o_res.server = p->o_arg.server; |
789 | nfs_fattr_init(&p->f_attr); | |
790 | nfs_fattr_init(&p->dir_attr); | |
791 | } | |
792 | ||
82a2c1b7 | 793 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 794 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
795 | const struct iattr *attrs, |
796 | gfp_t gfp_mask) | |
e56e0b78 | 797 | { |
82a2c1b7 | 798 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
799 | struct inode *dir = parent->d_inode; |
800 | struct nfs_server *server = NFS_SERVER(dir); | |
801 | struct nfs4_opendata *p; | |
802 | ||
8535b2be | 803 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
804 | if (p == NULL) |
805 | goto err; | |
8535b2be | 806 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
807 | if (p->o_arg.seqid == NULL) |
808 | goto err_free; | |
82a2c1b7 AV |
809 | nfs_sb_active(dentry->d_sb); |
810 | p->dentry = dget(dentry); | |
e56e0b78 TM |
811 | p->dir = parent; |
812 | p->owner = sp; | |
813 | atomic_inc(&sp->so_count); | |
814 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
815 | p->o_arg.open_flags = flags; |
816 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 817 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 818 | p->o_arg.id = sp->so_owner_id.id; |
82a2c1b7 | 819 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
820 | p->o_arg.server = server; |
821 | p->o_arg.bitmask = server->attr_bitmask; | |
822 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
d77d76ff TM |
823 | if (flags & O_CREAT) { |
824 | u32 *s; | |
825 | ||
e56e0b78 TM |
826 | p->o_arg.u.attrs = &p->attrs; |
827 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
828 | s = (u32 *) p->o_arg.u.verifier.data; |
829 | s[0] = jiffies; | |
830 | s[1] = current->pid; | |
e56e0b78 | 831 | } |
cdd4e68b TM |
832 | p->c_arg.fh = &p->o_res.fh; |
833 | p->c_arg.stateid = &p->o_res.stateid; | |
834 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 835 | nfs4_init_opendata_res(p); |
c6d00e63 | 836 | kref_init(&p->kref); |
e56e0b78 TM |
837 | return p; |
838 | err_free: | |
839 | kfree(p); | |
840 | err: | |
841 | dput(parent); | |
842 | return NULL; | |
843 | } | |
844 | ||
c6d00e63 | 845 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 846 | { |
c6d00e63 TM |
847 | struct nfs4_opendata *p = container_of(kref, |
848 | struct nfs4_opendata, kref); | |
82a2c1b7 | 849 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
850 | |
851 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
852 | if (p->state != NULL) |
853 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
854 | nfs4_put_state_owner(p->owner); |
855 | dput(p->dir); | |
82a2c1b7 AV |
856 | dput(p->dentry); |
857 | nfs_sb_deactive(sb); | |
c6d00e63 TM |
858 | kfree(p); |
859 | } | |
860 | ||
861 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
862 | { | |
863 | if (p != NULL) | |
864 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
865 | } |
866 | ||
06f814a3 TM |
867 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
868 | { | |
06f814a3 TM |
869 | int ret; |
870 | ||
06f814a3 | 871 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
872 | return ret; |
873 | } | |
874 | ||
dc0b027d | 875 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
876 | { |
877 | int ret = 0; | |
dc0b027d TM |
878 | |
879 | if (open_mode & O_EXCL) | |
880 | goto out; | |
881 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 882 | case FMODE_READ: |
88069f77 TM |
883 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
884 | && state->n_rdonly != 0; | |
6ee41268 TM |
885 | break; |
886 | case FMODE_WRITE: | |
88069f77 TM |
887 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
888 | && state->n_wronly != 0; | |
6ee41268 TM |
889 | break; |
890 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
891 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
892 | && state->n_rdwr != 0; | |
6ee41268 | 893 | } |
dc0b027d | 894 | out: |
6ee41268 TM |
895 | return ret; |
896 | } | |
897 | ||
dc0b027d | 898 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 899 | { |
dc0b027d | 900 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 901 | return 0; |
15c831bf | 902 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 903 | return 0; |
b7391f44 | 904 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
905 | return 1; |
906 | } | |
907 | ||
dc0b027d | 908 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 909 | { |
dc0b027d | 910 | switch (fmode) { |
e7616923 TM |
911 | case FMODE_WRITE: |
912 | state->n_wronly++; | |
913 | break; | |
914 | case FMODE_READ: | |
915 | state->n_rdonly++; | |
916 | break; | |
917 | case FMODE_READ|FMODE_WRITE: | |
918 | state->n_rdwr++; | |
919 | } | |
dc0b027d | 920 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
921 | } |
922 | ||
dc0b027d | 923 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
924 | { |
925 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
926 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
927 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 928 | switch (fmode) { |
003707c7 TM |
929 | case FMODE_READ: |
930 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
931 | break; | |
932 | case FMODE_WRITE: | |
933 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
934 | break; | |
935 | case FMODE_READ|FMODE_WRITE: | |
936 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
937 | } | |
e7616923 TM |
938 | } |
939 | ||
dc0b027d | 940 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 941 | { |
8bda4e4c | 942 | write_seqlock(&state->seqlock); |
dc0b027d | 943 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 944 | write_sequnlock(&state->seqlock); |
003707c7 TM |
945 | } |
946 | ||
dc0b027d | 947 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 948 | { |
8bda4e4c TM |
949 | /* |
950 | * Protect the call to nfs4_state_set_mode_locked and | |
951 | * serialise the stateid update | |
952 | */ | |
953 | write_seqlock(&state->seqlock); | |
003707c7 TM |
954 | if (deleg_stateid != NULL) { |
955 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
956 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
957 | } | |
958 | if (open_stateid != NULL) | |
dc0b027d | 959 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
960 | write_sequnlock(&state->seqlock); |
961 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 962 | update_open_stateflags(state, fmode); |
ec073428 | 963 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
964 | } |
965 | ||
dc0b027d | 966 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
967 | { |
968 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
969 | struct nfs_delegation *deleg_cur; | |
970 | int ret = 0; | |
971 | ||
dc0b027d | 972 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
973 | |
974 | rcu_read_lock(); | |
975 | deleg_cur = rcu_dereference(nfsi->delegation); | |
976 | if (deleg_cur == NULL) | |
977 | goto no_delegation; | |
978 | ||
979 | spin_lock(&deleg_cur->lock); | |
980 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 981 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
982 | goto no_delegation_unlock; |
983 | ||
984 | if (delegation == NULL) | |
985 | delegation = &deleg_cur->stateid; | |
986 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
987 | goto no_delegation_unlock; | |
988 | ||
b7391f44 | 989 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 990 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
991 | ret = 1; |
992 | no_delegation_unlock: | |
993 | spin_unlock(&deleg_cur->lock); | |
994 | no_delegation: | |
995 | rcu_read_unlock(); | |
996 | ||
997 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 998 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
999 | ret = 1; |
1000 | } | |
1001 | ||
1002 | return ret; | |
1003 | } | |
1004 | ||
1005 | ||
dc0b027d | 1006 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1007 | { |
1008 | struct nfs_delegation *delegation; | |
1009 | ||
1010 | rcu_read_lock(); | |
1011 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1012 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1013 | rcu_read_unlock(); |
1014 | return; | |
1015 | } | |
1016 | rcu_read_unlock(); | |
1017 | nfs_inode_return_delegation(inode); | |
1018 | } | |
1019 | ||
6ee41268 | 1020 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1021 | { |
1022 | struct nfs4_state *state = opendata->state; | |
1023 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1024 | struct nfs_delegation *delegation; | |
dc0b027d TM |
1025 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
1026 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
1027 | nfs4_stateid stateid; |
1028 | int ret = -EAGAIN; | |
1029 | ||
aac00a8d | 1030 | for (;;) { |
dc0b027d | 1031 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1032 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1033 | if (can_open_cached(state, fmode, open_mode)) { |
1034 | update_open_stateflags(state, fmode); | |
6ee41268 | 1035 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1036 | goto out_return_state; |
1037 | } | |
1038 | spin_unlock(&state->owner->so_lock); | |
1039 | } | |
34310430 TM |
1040 | rcu_read_lock(); |
1041 | delegation = rcu_dereference(nfsi->delegation); | |
1042 | if (delegation == NULL || | |
dc0b027d | 1043 | !can_open_delegated(delegation, fmode)) { |
34310430 | 1044 | rcu_read_unlock(); |
aac00a8d | 1045 | break; |
34310430 | 1046 | } |
aac00a8d TM |
1047 | /* Save the delegation */ |
1048 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
1049 | rcu_read_unlock(); | |
af22f94a | 1050 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1051 | if (ret != 0) |
1052 | goto out; | |
1053 | ret = -EAGAIN; | |
34310430 TM |
1054 | |
1055 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1056 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1057 | goto out_return_state; |
aac00a8d | 1058 | } |
aac00a8d TM |
1059 | out: |
1060 | return ERR_PTR(ret); | |
1061 | out_return_state: | |
1062 | atomic_inc(&state->count); | |
1063 | return state; | |
1064 | } | |
1065 | ||
24ac23ab TM |
1066 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1067 | { | |
1068 | struct inode *inode; | |
1069 | struct nfs4_state *state = NULL; | |
003707c7 | 1070 | struct nfs_delegation *delegation; |
1b370bc2 | 1071 | int ret; |
24ac23ab | 1072 | |
aac00a8d | 1073 | if (!data->rpc_done) { |
6ee41268 | 1074 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1075 | goto out; |
1076 | } | |
1077 | ||
1b370bc2 | 1078 | ret = -EAGAIN; |
24ac23ab | 1079 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1080 | goto err; |
24ac23ab | 1081 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1082 | ret = PTR_ERR(inode); |
03f28e3a | 1083 | if (IS_ERR(inode)) |
1b370bc2 TM |
1084 | goto err; |
1085 | ret = -ENOMEM; | |
24ac23ab TM |
1086 | state = nfs4_get_open_state(inode, data->owner); |
1087 | if (state == NULL) | |
1b370bc2 | 1088 | goto err_put_inode; |
549d6ed5 | 1089 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
1090 | int delegation_flags = 0; |
1091 | ||
003707c7 TM |
1092 | rcu_read_lock(); |
1093 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1094 | if (delegation) | |
1095 | delegation_flags = delegation->flags; | |
1096 | rcu_read_unlock(); | |
15c831bf | 1097 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1098 | nfs_inode_set_delegation(state->inode, |
1099 | data->owner->so_cred, | |
1100 | &data->o_res); | |
1101 | else | |
1102 | nfs_inode_reclaim_delegation(state->inode, | |
1103 | data->owner->so_cred, | |
1104 | &data->o_res); | |
1105 | } | |
34310430 TM |
1106 | |
1107 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1108 | data->o_arg.fmode); |
24ac23ab | 1109 | iput(inode); |
aac00a8d | 1110 | out: |
24ac23ab | 1111 | return state; |
1b370bc2 TM |
1112 | err_put_inode: |
1113 | iput(inode); | |
1114 | err: | |
1115 | return ERR_PTR(ret); | |
24ac23ab TM |
1116 | } |
1117 | ||
864472e9 TM |
1118 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1119 | { | |
1120 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1121 | struct nfs_open_context *ctx; | |
1122 | ||
1123 | spin_lock(&state->inode->i_lock); | |
1124 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1125 | if (ctx->state != state) | |
1126 | continue; | |
1127 | get_nfs_open_context(ctx); | |
1128 | spin_unlock(&state->inode->i_lock); | |
1129 | return ctx; | |
1130 | } | |
1131 | spin_unlock(&state->inode->i_lock); | |
1132 | return ERR_PTR(-ENOENT); | |
1133 | } | |
1134 | ||
6f220ed5 TM |
1135 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1136 | { | |
1137 | struct nfs4_opendata *opendata; | |
1138 | ||
3d4ff43d | 1139 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1140 | if (opendata == NULL) |
1141 | return ERR_PTR(-ENOMEM); | |
1142 | opendata->state = state; | |
1143 | atomic_inc(&state->count); | |
1144 | return opendata; | |
1145 | } | |
1146 | ||
dc0b027d | 1147 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1148 | { |
2ced46c2 | 1149 | struct nfs4_state *newstate; |
864472e9 TM |
1150 | int ret; |
1151 | ||
dc0b027d TM |
1152 | opendata->o_arg.open_flags = 0; |
1153 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1154 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1155 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1156 | nfs4_init_opendata_res(opendata); | |
b257957e | 1157 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1158 | if (ret != 0) |
1159 | return ret; | |
2ced46c2 | 1160 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1161 | if (IS_ERR(newstate)) |
1162 | return PTR_ERR(newstate); | |
643168c2 | 1163 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1164 | *res = newstate; |
864472e9 TM |
1165 | return 0; |
1166 | } | |
1167 | ||
1168 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1169 | { | |
864472e9 | 1170 | struct nfs4_state *newstate; |
864472e9 TM |
1171 | int ret; |
1172 | ||
1173 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1174 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1175 | smp_rmb(); |
1176 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1177 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1178 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1179 | if (ret != 0) |
1180 | return ret; | |
2ced46c2 TM |
1181 | if (newstate != state) |
1182 | return -ESTALE; | |
864472e9 TM |
1183 | } |
1184 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1185 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1186 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1187 | if (ret != 0) |
1188 | return ret; | |
2ced46c2 TM |
1189 | if (newstate != state) |
1190 | return -ESTALE; | |
864472e9 TM |
1191 | } |
1192 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1193 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1194 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1195 | if (ret != 0) |
1196 | return ret; | |
2ced46c2 TM |
1197 | if (newstate != state) |
1198 | return -ESTALE; | |
864472e9 | 1199 | } |
1ac7e2fd TM |
1200 | /* |
1201 | * We may have performed cached opens for all three recoveries. | |
1202 | * Check if we need to update the current stateid. | |
1203 | */ | |
1204 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1205 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1206 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1207 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1208 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1209 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1210 | } |
864472e9 TM |
1211 | return 0; |
1212 | } | |
1213 | ||
1da177e4 LT |
1214 | /* |
1215 | * OPEN_RECLAIM: | |
1216 | * reclaim state on the server after a reboot. | |
1da177e4 | 1217 | */ |
539cd03a | 1218 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1219 | { |
1ac7e2fd | 1220 | struct nfs_delegation *delegation; |
864472e9 | 1221 | struct nfs4_opendata *opendata; |
dc0b027d | 1222 | fmode_t delegation_type = 0; |
1da177e4 LT |
1223 | int status; |
1224 | ||
6f220ed5 TM |
1225 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1226 | if (IS_ERR(opendata)) | |
1227 | return PTR_ERR(opendata); | |
864472e9 TM |
1228 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1229 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1230 | rcu_read_lock(); |
1231 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1232 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1233 | delegation_type = delegation->type; |
1ac7e2fd | 1234 | rcu_read_unlock(); |
864472e9 TM |
1235 | opendata->o_arg.u.delegation_type = delegation_type; |
1236 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1237 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1238 | return status; |
1239 | } | |
1240 | ||
539cd03a | 1241 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1242 | { |
1243 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1244 | struct nfs4_exception exception = { }; | |
1245 | int err; | |
1246 | do { | |
539cd03a | 1247 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1248 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1249 | break; |
1250 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1251 | } while (exception.retry); |
1252 | return err; | |
1253 | } | |
1254 | ||
864472e9 TM |
1255 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1256 | { | |
1257 | struct nfs_open_context *ctx; | |
1258 | int ret; | |
1259 | ||
1260 | ctx = nfs4_state_find_open_context(state); | |
1261 | if (IS_ERR(ctx)) | |
1262 | return PTR_ERR(ctx); | |
539cd03a | 1263 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1264 | put_nfs_open_context(ctx); |
1265 | return ret; | |
1266 | } | |
1267 | ||
13437e12 | 1268 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1269 | { |
e56e0b78 | 1270 | struct nfs4_opendata *opendata; |
864472e9 | 1271 | int ret; |
1da177e4 | 1272 | |
6f220ed5 TM |
1273 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1274 | if (IS_ERR(opendata)) | |
1275 | return PTR_ERR(opendata); | |
e56e0b78 | 1276 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1277 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1278 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1279 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1280 | nfs4_opendata_put(opendata); |
864472e9 | 1281 | return ret; |
1da177e4 LT |
1282 | } |
1283 | ||
13437e12 | 1284 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1285 | { |
1286 | struct nfs4_exception exception = { }; | |
539cd03a | 1287 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1288 | int err; |
1289 | do { | |
13437e12 | 1290 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1291 | switch (err) { |
1292 | case 0: | |
965b5d67 TM |
1293 | case -ENOENT: |
1294 | case -ESTALE: | |
1295 | goto out; | |
bcfa49f6 RL |
1296 | case -NFS4ERR_BADSESSION: |
1297 | case -NFS4ERR_BADSLOT: | |
1298 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1299 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1300 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1301 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1302 | goto out; |
1da177e4 LT |
1303 | case -NFS4ERR_STALE_CLIENTID: |
1304 | case -NFS4ERR_STALE_STATEID: | |
1305 | case -NFS4ERR_EXPIRED: | |
1306 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1307 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1308 | goto out; |
1309 | case -ERESTARTSYS: | |
1310 | /* | |
1311 | * The show must go on: exit, but mark the | |
1312 | * stateid as needing recovery. | |
1313 | */ | |
1314 | case -NFS4ERR_ADMIN_REVOKED: | |
1315 | case -NFS4ERR_BAD_STATEID: | |
0400a6b0 | 1316 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1317 | case -EKEYEXPIRED: |
1318 | /* | |
1319 | * User RPCSEC_GSS context has expired. | |
1320 | * We cannot recover this stateid now, so | |
1321 | * skip it and allow recovery thread to | |
1322 | * proceed. | |
1323 | */ | |
965b5d67 TM |
1324 | case -ENOMEM: |
1325 | err = 0; | |
1326 | goto out; | |
1da177e4 LT |
1327 | } |
1328 | err = nfs4_handle_exception(server, err, &exception); | |
1329 | } while (exception.retry); | |
965b5d67 | 1330 | out: |
1da177e4 LT |
1331 | return err; |
1332 | } | |
1333 | ||
cdd4e68b TM |
1334 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1335 | { | |
1336 | struct nfs4_opendata *data = calldata; | |
1337 | ||
1338 | data->rpc_status = task->tk_status; | |
26e976a8 | 1339 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1340 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1341 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1342 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1343 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1344 | data->rpc_done = 1; |
26e976a8 | 1345 | } |
cdd4e68b TM |
1346 | } |
1347 | ||
1348 | static void nfs4_open_confirm_release(void *calldata) | |
1349 | { | |
1350 | struct nfs4_opendata *data = calldata; | |
1351 | struct nfs4_state *state = NULL; | |
1352 | ||
1353 | /* If this request hasn't been cancelled, do nothing */ | |
1354 | if (data->cancelled == 0) | |
1355 | goto out_free; | |
1356 | /* In case of error, no cleanup! */ | |
3e309914 | 1357 | if (!data->rpc_done) |
cdd4e68b | 1358 | goto out_free; |
cdd4e68b | 1359 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1360 | if (!IS_ERR(state)) |
643168c2 | 1361 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1362 | out_free: |
c6d00e63 | 1363 | nfs4_opendata_put(data); |
cdd4e68b TM |
1364 | } |
1365 | ||
1366 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1367 | .rpc_call_done = nfs4_open_confirm_done, |
1368 | .rpc_release = nfs4_open_confirm_release, | |
1369 | }; | |
1370 | ||
1371 | /* | |
1372 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1373 | */ | |
1374 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1375 | { | |
1376 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1377 | struct rpc_task *task; | |
5138fde0 TM |
1378 | struct rpc_message msg = { |
1379 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1380 | .rpc_argp = &data->c_arg, | |
1381 | .rpc_resp = &data->c_res, | |
1382 | .rpc_cred = data->owner->so_cred, | |
1383 | }; | |
c970aa85 TM |
1384 | struct rpc_task_setup task_setup_data = { |
1385 | .rpc_client = server->client, | |
5138fde0 | 1386 | .rpc_message = &msg, |
c970aa85 TM |
1387 | .callback_ops = &nfs4_open_confirm_ops, |
1388 | .callback_data = data, | |
101070ca | 1389 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1390 | .flags = RPC_TASK_ASYNC, |
1391 | }; | |
1da177e4 LT |
1392 | int status; |
1393 | ||
c6d00e63 | 1394 | kref_get(&data->kref); |
3e309914 TM |
1395 | data->rpc_done = 0; |
1396 | data->rpc_status = 0; | |
5138fde0 | 1397 | data->timestamp = jiffies; |
c970aa85 | 1398 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1399 | if (IS_ERR(task)) |
cdd4e68b | 1400 | return PTR_ERR(task); |
cdd4e68b TM |
1401 | status = nfs4_wait_for_completion_rpc_task(task); |
1402 | if (status != 0) { | |
1403 | data->cancelled = 1; | |
1404 | smp_wmb(); | |
1405 | } else | |
1406 | status = data->rpc_status; | |
e6b3c4db | 1407 | rpc_put_task(task); |
1da177e4 LT |
1408 | return status; |
1409 | } | |
1410 | ||
24ac23ab | 1411 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1412 | { |
24ac23ab TM |
1413 | struct nfs4_opendata *data = calldata; |
1414 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1415 | |
24ac23ab TM |
1416 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1417 | return; | |
aac00a8d TM |
1418 | /* |
1419 | * Check if we still need to send an OPEN call, or if we can use | |
1420 | * a delegation instead. | |
1421 | */ | |
1422 | if (data->state != NULL) { | |
1423 | struct nfs_delegation *delegation; | |
1424 | ||
dc0b027d | 1425 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1426 | goto out_no_action; |
aac00a8d TM |
1427 | rcu_read_lock(); |
1428 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
1429 | if (delegation != NULL && | |
15c831bf | 1430 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 1431 | rcu_read_unlock(); |
6ee41268 | 1432 | goto out_no_action; |
aac00a8d TM |
1433 | } |
1434 | rcu_read_unlock(); | |
1435 | } | |
24ac23ab | 1436 | /* Update sequence id. */ |
9f958ab8 | 1437 | data->o_arg.id = sp->so_owner_id.id; |
1f0e890d | 1438 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1439 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1440 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1441 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1442 | } | |
26e976a8 | 1443 | data->timestamp = jiffies; |
035168ab | 1444 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c AA |
1445 | &data->o_arg.seq_args, |
1446 | &data->o_res.seq_res, 1, task)) | |
1447 | return; | |
5138fde0 | 1448 | rpc_call_start(task); |
6ee41268 TM |
1449 | return; |
1450 | out_no_action: | |
1451 | task->tk_action = NULL; | |
1452 | ||
24ac23ab | 1453 | } |
1da177e4 | 1454 | |
b257957e AB |
1455 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1456 | { | |
1457 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1458 | nfs4_open_prepare(task, calldata); | |
1459 | } | |
1460 | ||
24ac23ab TM |
1461 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1462 | { | |
1463 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1464 | |
24ac23ab | 1465 | data->rpc_status = task->tk_status; |
d898528c | 1466 | |
14516c3a TM |
1467 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1468 | return; | |
d898528c | 1469 | |
24ac23ab TM |
1470 | if (task->tk_status == 0) { |
1471 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1472 | case S_IFREG: |
1473 | break; | |
1474 | case S_IFLNK: | |
24ac23ab | 1475 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1476 | break; |
1477 | case S_IFDIR: | |
24ac23ab | 1478 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1479 | break; |
1480 | default: | |
24ac23ab | 1481 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1482 | } |
26e976a8 | 1483 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1484 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1485 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1486 | } |
3e309914 | 1487 | data->rpc_done = 1; |
24ac23ab | 1488 | } |
6f926b5b | 1489 | |
24ac23ab TM |
1490 | static void nfs4_open_release(void *calldata) |
1491 | { | |
1492 | struct nfs4_opendata *data = calldata; | |
1493 | struct nfs4_state *state = NULL; | |
1494 | ||
1495 | /* If this request hasn't been cancelled, do nothing */ | |
1496 | if (data->cancelled == 0) | |
1497 | goto out_free; | |
1498 | /* In case of error, no cleanup! */ | |
3e309914 | 1499 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1500 | goto out_free; |
1501 | /* In case we need an open_confirm, no cleanup! */ | |
1502 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1503 | goto out_free; | |
24ac23ab | 1504 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1505 | if (!IS_ERR(state)) |
643168c2 | 1506 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1507 | out_free: |
c6d00e63 | 1508 | nfs4_opendata_put(data); |
24ac23ab TM |
1509 | } |
1510 | ||
1511 | static const struct rpc_call_ops nfs4_open_ops = { | |
1512 | .rpc_call_prepare = nfs4_open_prepare, | |
1513 | .rpc_call_done = nfs4_open_done, | |
1514 | .rpc_release = nfs4_open_release, | |
1515 | }; | |
1516 | ||
b257957e AB |
1517 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1518 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1519 | .rpc_call_done = nfs4_open_done, | |
1520 | .rpc_release = nfs4_open_release, | |
1521 | }; | |
1522 | ||
1523 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1524 | { |
1525 | struct inode *dir = data->dir->d_inode; | |
1526 | struct nfs_server *server = NFS_SERVER(dir); | |
1527 | struct nfs_openargs *o_arg = &data->o_arg; | |
1528 | struct nfs_openres *o_res = &data->o_res; | |
1529 | struct rpc_task *task; | |
5138fde0 TM |
1530 | struct rpc_message msg = { |
1531 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1532 | .rpc_argp = o_arg, | |
1533 | .rpc_resp = o_res, | |
1534 | .rpc_cred = data->owner->so_cred, | |
1535 | }; | |
c970aa85 TM |
1536 | struct rpc_task_setup task_setup_data = { |
1537 | .rpc_client = server->client, | |
5138fde0 | 1538 | .rpc_message = &msg, |
c970aa85 TM |
1539 | .callback_ops = &nfs4_open_ops, |
1540 | .callback_data = data, | |
101070ca | 1541 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1542 | .flags = RPC_TASK_ASYNC, |
1543 | }; | |
24ac23ab TM |
1544 | int status; |
1545 | ||
c6d00e63 | 1546 | kref_get(&data->kref); |
3e309914 TM |
1547 | data->rpc_done = 0; |
1548 | data->rpc_status = 0; | |
2ced46c2 | 1549 | data->cancelled = 0; |
b257957e AB |
1550 | if (isrecover) |
1551 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1552 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1553 | if (IS_ERR(task)) |
1554 | return PTR_ERR(task); | |
1555 | status = nfs4_wait_for_completion_rpc_task(task); | |
1556 | if (status != 0) { | |
1557 | data->cancelled = 1; | |
1558 | smp_wmb(); | |
1559 | } else | |
1560 | status = data->rpc_status; | |
1561 | rpc_put_task(task); | |
1562 | ||
1563 | return status; | |
1564 | } | |
1565 | ||
1566 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1567 | { | |
1568 | struct inode *dir = data->dir->d_inode; | |
1569 | struct nfs_openres *o_res = &data->o_res; | |
1570 | int status; | |
1571 | ||
1572 | status = nfs4_run_open_task(data, 1); | |
1573 | if (status != 0 || !data->rpc_done) | |
1574 | return status; | |
1575 | ||
1576 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1577 | ||
1578 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1579 | status = _nfs4_proc_open_confirm(data); | |
1580 | if (status != 0) | |
1581 | return status; | |
1582 | } | |
1583 | ||
1584 | return status; | |
1585 | } | |
1586 | ||
1587 | /* | |
1588 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1589 | */ | |
1590 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1591 | { | |
1592 | struct inode *dir = data->dir->d_inode; | |
1593 | struct nfs_server *server = NFS_SERVER(dir); | |
1594 | struct nfs_openargs *o_arg = &data->o_arg; | |
1595 | struct nfs_openres *o_res = &data->o_res; | |
1596 | int status; | |
1597 | ||
1598 | status = nfs4_run_open_task(data, 0); | |
3e309914 | 1599 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1600 | return status; |
1601 | ||
56ae19f3 TM |
1602 | if (o_arg->open_flags & O_CREAT) { |
1603 | update_changeattr(dir, &o_res->cinfo); | |
1604 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1605 | } else | |
1606 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1607 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1608 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1609 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1610 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1611 | if (status != 0) |
24ac23ab | 1612 | return status; |
1da177e4 LT |
1613 | } |
1614 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1615 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1616 | return 0; |
1da177e4 LT |
1617 | } |
1618 | ||
d83217c1 | 1619 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1620 | { |
a78cb57a | 1621 | unsigned int loop; |
6b30954e | 1622 | int ret; |
58d9714a | 1623 | |
a78cb57a | 1624 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1625 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1626 | if (ret != 0) |
a78cb57a | 1627 | break; |
e598d843 TM |
1628 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1629 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1630 | break; |
0400a6b0 | 1631 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1632 | ret = -EIO; |
6b30954e | 1633 | } |
a78cb57a | 1634 | return ret; |
58d9714a TM |
1635 | } |
1636 | ||
d83217c1 AA |
1637 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1638 | { | |
1639 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1640 | } | |
1641 | ||
1da177e4 LT |
1642 | /* |
1643 | * OPEN_EXPIRED: | |
1644 | * reclaim state on the server after a network partition. | |
1645 | * Assumes caller holds the appropriate lock | |
1646 | */ | |
539cd03a | 1647 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1648 | { |
e56e0b78 | 1649 | struct nfs4_opendata *opendata; |
864472e9 | 1650 | int ret; |
1da177e4 | 1651 | |
6f220ed5 TM |
1652 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1653 | if (IS_ERR(opendata)) | |
1654 | return PTR_ERR(opendata); | |
864472e9 | 1655 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1656 | if (ret == -ESTALE) |
3d4ff43d | 1657 | d_drop(ctx->dentry); |
c6d00e63 | 1658 | nfs4_opendata_put(opendata); |
864472e9 | 1659 | return ret; |
1da177e4 LT |
1660 | } |
1661 | ||
a9ed2e25 | 1662 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1663 | { |
539cd03a | 1664 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1665 | struct nfs4_exception exception = { }; |
1666 | int err; | |
1667 | ||
1668 | do { | |
539cd03a | 1669 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1670 | switch (err) { |
1671 | default: | |
1672 | goto out; | |
1673 | case -NFS4ERR_GRACE: | |
1674 | case -NFS4ERR_DELAY: | |
1675 | nfs4_handle_exception(server, err, &exception); | |
1676 | err = 0; | |
1677 | } | |
202b50dc | 1678 | } while (exception.retry); |
a9ed2e25 | 1679 | out: |
202b50dc TM |
1680 | return err; |
1681 | } | |
1682 | ||
1da177e4 LT |
1683 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1684 | { | |
1da177e4 | 1685 | struct nfs_open_context *ctx; |
864472e9 | 1686 | int ret; |
1da177e4 | 1687 | |
864472e9 TM |
1688 | ctx = nfs4_state_find_open_context(state); |
1689 | if (IS_ERR(ctx)) | |
1690 | return PTR_ERR(ctx); | |
539cd03a | 1691 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1692 | put_nfs_open_context(ctx); |
1693 | return ret; | |
1da177e4 LT |
1694 | } |
1695 | ||
f062eb6c BS |
1696 | #if defined(CONFIG_NFS_V4_1) |
1697 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1698 | { | |
1699 | int status; | |
1700 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1701 | ||
1702 | status = nfs41_test_stateid(server, state); | |
1703 | if (status == NFS_OK) | |
1704 | return 0; | |
1705 | nfs41_free_stateid(server, state); | |
1706 | return nfs4_open_expired(sp, state); | |
1707 | } | |
1708 | #endif | |
1709 | ||
aa53ed54 JL |
1710 | /* |
1711 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1712 | * fields corresponding to attributes that were used to store the verifier. | |
1713 | * Make sure we clobber those fields in the later setattr call | |
1714 | */ | |
1715 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1716 | { | |
1717 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1718 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1719 | sattr->ia_valid |= ATTR_ATIME; | |
1720 | ||
1721 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1722 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1723 | sattr->ia_valid |= ATTR_MTIME; | |
1724 | } | |
1725 | ||
1da177e4 | 1726 | /* |
24ac23ab | 1727 | * Returns a referenced nfs4_state |
1da177e4 | 1728 | */ |
82a2c1b7 | 1729 | static int _nfs4_do_open(struct inode *dir, struct dentry *dentry, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res) |
1da177e4 LT |
1730 | { |
1731 | struct nfs4_state_owner *sp; | |
1732 | struct nfs4_state *state = NULL; | |
1733 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1734 | struct nfs4_opendata *opendata; |
aac00a8d | 1735 | int status; |
1da177e4 LT |
1736 | |
1737 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1738 | status = -ENOMEM; |
1739 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1740 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1741 | goto out_err; | |
1742 | } | |
58d9714a TM |
1743 | status = nfs4_recover_expired_lease(server); |
1744 | if (status != 0) | |
b4454fe1 | 1745 | goto err_put_state_owner; |
82a2c1b7 AV |
1746 | if (dentry->d_inode != NULL) |
1747 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1748 | status = -ENOMEM; |
82a2c1b7 | 1749 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1750 | if (opendata == NULL) |
95d35cb4 | 1751 | goto err_put_state_owner; |
1da177e4 | 1752 | |
82a2c1b7 AV |
1753 | if (dentry->d_inode != NULL) |
1754 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1755 | |
24ac23ab | 1756 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1757 | if (status != 0) |
c6d00e63 | 1758 | goto err_opendata_put; |
1da177e4 | 1759 | |
24ac23ab | 1760 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1761 | status = PTR_ERR(state); |
1762 | if (IS_ERR(state)) | |
c6d00e63 | 1763 | goto err_opendata_put; |
0df5dd4a | 1764 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1765 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1766 | |
1767 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1768 | nfs4_exclusive_attrset(opendata, sattr); | |
1769 | ||
1770 | nfs_fattr_init(opendata->o_res.f_attr); | |
1771 | status = nfs4_do_setattr(state->inode, cred, | |
1772 | opendata->o_res.f_attr, sattr, | |
1773 | state); | |
1774 | if (status == 0) | |
1775 | nfs_setattr_update_inode(state->inode, sattr); | |
1776 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1777 | } | |
c6d00e63 | 1778 | nfs4_opendata_put(opendata); |
1da177e4 | 1779 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1780 | *res = state; |
1781 | return 0; | |
c6d00e63 TM |
1782 | err_opendata_put: |
1783 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1784 | err_put_state_owner: |
1785 | nfs4_put_state_owner(sp); | |
1da177e4 | 1786 | out_err: |
1da177e4 LT |
1787 | *res = NULL; |
1788 | return status; | |
1789 | } | |
1790 | ||
1791 | ||
82a2c1b7 | 1792 | static struct nfs4_state *nfs4_do_open(struct inode *dir, struct dentry *dentry, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred) |
1da177e4 LT |
1793 | { |
1794 | struct nfs4_exception exception = { }; | |
1795 | struct nfs4_state *res; | |
1796 | int status; | |
1797 | ||
1798 | do { | |
82a2c1b7 | 1799 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1800 | if (status == 0) |
1801 | break; | |
1802 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1803 | * book-keeping w.r.t. state-changing operations | |
1804 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1805 | * It is actually a sign of a bug on the client or on the server. | |
1806 | * | |
1807 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1808 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1809 | * have unhashed the old state_owner for us, and that we can |
1810 | * therefore safely retry using a new one. We should still warn | |
1811 | * the user though... | |
1812 | */ | |
1813 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1814 | printk(KERN_WARNING "NFS: v4 server %s " |
1815 | " returned a bad sequence-id error!\n", | |
1816 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1817 | exception.retry = 1; |
1818 | continue; | |
1819 | } | |
550f5747 TM |
1820 | /* |
1821 | * BAD_STATEID on OPEN means that the server cancelled our | |
1822 | * state before it received the OPEN_CONFIRM. | |
1823 | * Recover by retrying the request as per the discussion | |
1824 | * on Page 181 of RFC3530. | |
1825 | */ | |
1826 | if (status == -NFS4ERR_BAD_STATEID) { | |
1827 | exception.retry = 1; | |
1828 | continue; | |
1829 | } | |
aac00a8d TM |
1830 | if (status == -EAGAIN) { |
1831 | /* We must have found a delegation */ | |
1832 | exception.retry = 1; | |
1833 | continue; | |
1834 | } | |
1da177e4 LT |
1835 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1836 | status, &exception)); | |
1837 | } while (exception.retry); | |
1838 | return res; | |
1839 | } | |
1840 | ||
659bfcd6 TM |
1841 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1842 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1843 | struct nfs4_state *state) | |
1da177e4 | 1844 | { |
3e4f6290 | 1845 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1846 | struct nfs_setattrargs arg = { |
3e4f6290 | 1847 | .fh = NFS_FH(inode), |
1da177e4 LT |
1848 | .iap = sattr, |
1849 | .server = server, | |
1850 | .bitmask = server->attr_bitmask, | |
1851 | }; | |
1852 | struct nfs_setattrres res = { | |
1853 | .fattr = fattr, | |
1854 | .server = server, | |
1855 | }; | |
1856 | struct rpc_message msg = { | |
659bfcd6 TM |
1857 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1858 | .rpc_argp = &arg, | |
1859 | .rpc_resp = &res, | |
1860 | .rpc_cred = cred, | |
1da177e4 | 1861 | }; |
26e976a8 | 1862 | unsigned long timestamp = jiffies; |
65e4308d | 1863 | int status; |
1da177e4 | 1864 | |
0e574af1 | 1865 | nfs_fattr_init(fattr); |
1da177e4 | 1866 | |
3e4f6290 TM |
1867 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1868 | /* Use that stateid */ | |
1869 | } else if (state != NULL) { | |
77041ed9 | 1870 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1871 | } else |
1da177e4 LT |
1872 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1873 | ||
7c513058 | 1874 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1875 | if (status == 0 && state != NULL) |
1876 | renew_lease(server, timestamp); | |
65e4308d | 1877 | return status; |
1da177e4 LT |
1878 | } |
1879 | ||
659bfcd6 TM |
1880 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1881 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1882 | struct nfs4_state *state) | |
1da177e4 | 1883 | { |
3e4f6290 | 1884 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1885 | struct nfs4_exception exception = { }; |
1886 | int err; | |
1887 | do { | |
1888 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1889 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1890 | &exception); |
1891 | } while (exception.retry); | |
1892 | return err; | |
1893 | } | |
1894 | ||
1895 | struct nfs4_closedata { | |
1896 | struct inode *inode; | |
1897 | struct nfs4_state *state; | |
1898 | struct nfs_closeargs arg; | |
1899 | struct nfs_closeres res; | |
516a6af6 | 1900 | struct nfs_fattr fattr; |
26e976a8 | 1901 | unsigned long timestamp; |
f7e8917a FI |
1902 | bool roc; |
1903 | u32 roc_barrier; | |
1da177e4 LT |
1904 | }; |
1905 | ||
963d8fe5 | 1906 | static void nfs4_free_closedata(void *data) |
9512135d | 1907 | { |
963d8fe5 TM |
1908 | struct nfs4_closedata *calldata = data; |
1909 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 1910 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 1911 | |
f7e8917a FI |
1912 | if (calldata->roc) |
1913 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1914 | nfs4_put_open_state(calldata->state); |
1915 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1916 | nfs4_put_state_owner(sp); |
643168c2 | 1917 | nfs_sb_deactive(sb); |
9512135d TM |
1918 | kfree(calldata); |
1919 | } | |
1920 | ||
88069f77 TM |
1921 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1922 | fmode_t fmode) | |
1923 | { | |
1924 | spin_lock(&state->owner->so_lock); | |
1925 | if (!(fmode & FMODE_READ)) | |
1926 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1927 | if (!(fmode & FMODE_WRITE)) | |
1928 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1929 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1930 | spin_unlock(&state->owner->so_lock); | |
1931 | } | |
1932 | ||
963d8fe5 | 1933 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1934 | { |
963d8fe5 | 1935 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1936 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1937 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1938 | ||
14516c3a TM |
1939 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1940 | return; | |
1da177e4 LT |
1941 | /* hmm. we are done with the inode, and in the process of freeing |
1942 | * the state_owner. we keep this around to process errors | |
1943 | */ | |
1da177e4 LT |
1944 | switch (task->tk_status) { |
1945 | case 0: | |
f7e8917a FI |
1946 | if (calldata->roc) |
1947 | pnfs_roc_set_barrier(state->inode, | |
1948 | calldata->roc_barrier); | |
45328c35 | 1949 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1950 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
1951 | nfs4_close_clear_stateid_flags(state, |
1952 | calldata->arg.fmode); | |
1da177e4 LT |
1953 | break; |
1954 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1955 | case -NFS4ERR_OLD_STATEID: |
1956 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1957 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1958 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1959 | break; |
1da177e4 | 1960 | default: |
72211dbe TM |
1961 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
1962 | rpc_restart_call_prepare(task); | |
1da177e4 | 1963 | } |
72211dbe | 1964 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 1965 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1966 | } |
1967 | ||
4ce70ada | 1968 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1969 | { |
4ce70ada | 1970 | struct nfs4_closedata *calldata = data; |
9512135d | 1971 | struct nfs4_state *state = calldata->state; |
88069f77 | 1972 | int call_close = 0; |
9512135d | 1973 | |
963d8fe5 | 1974 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1975 | return; |
003707c7 | 1976 | |
88069f77 TM |
1977 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
1978 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 1979 | spin_lock(&state->owner->so_lock); |
003707c7 | 1980 | /* Calculate the change in open mode */ |
e7616923 | 1981 | if (state->n_rdwr == 0) { |
003707c7 | 1982 | if (state->n_rdonly == 0) { |
88069f77 TM |
1983 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
1984 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1985 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
1986 | } |
1987 | if (state->n_wronly == 0) { | |
88069f77 TM |
1988 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
1989 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1990 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 1991 | } |
e7616923 | 1992 | } |
4cecb76f | 1993 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
1994 | |
1995 | if (!call_close) { | |
963d8fe5 TM |
1996 | /* Note: exit _without_ calling nfs4_close_done */ |
1997 | task->tk_action = NULL; | |
9512135d TM |
1998 | return; |
1999 | } | |
88069f77 | 2000 | |
f7e8917a | 2001 | if (calldata->arg.fmode == 0) { |
88069f77 | 2002 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2003 | if (calldata->roc && |
2004 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2005 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2006 | task, NULL); | |
2007 | return; | |
2008 | } | |
2009 | } | |
88069f77 | 2010 | |
516a6af6 | 2011 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2012 | calldata->timestamp = jiffies; |
035168ab | 2013 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
19ddab06 AA |
2014 | &calldata->arg.seq_args, &calldata->res.seq_res, |
2015 | 1, task)) | |
2016 | return; | |
5138fde0 | 2017 | rpc_call_start(task); |
1da177e4 LT |
2018 | } |
2019 | ||
963d8fe5 | 2020 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2021 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2022 | .rpc_call_done = nfs4_close_done, |
2023 | .rpc_release = nfs4_free_closedata, | |
2024 | }; | |
2025 | ||
1da177e4 LT |
2026 | /* |
2027 | * It is possible for data to be read/written from a mem-mapped file | |
2028 | * after the sys_close call (which hits the vfs layer as a flush). | |
2029 | * This means that we can't safely call nfsv4 close on a file until | |
2030 | * the inode is cleared. This in turn means that we are not good | |
2031 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2032 | * share state even when we are done with one of the three share | |
2033 | * stateid's in the inode. | |
2034 | * | |
2035 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2036 | */ | |
643168c2 | 2037 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2038 | { |
4a35bd41 | 2039 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2040 | struct nfs4_closedata *calldata; |
b39e625b TM |
2041 | struct nfs4_state_owner *sp = state->owner; |
2042 | struct rpc_task *task; | |
5138fde0 TM |
2043 | struct rpc_message msg = { |
2044 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2045 | .rpc_cred = state->owner->so_cred, | |
2046 | }; | |
c970aa85 TM |
2047 | struct rpc_task_setup task_setup_data = { |
2048 | .rpc_client = server->client, | |
5138fde0 | 2049 | .rpc_message = &msg, |
c970aa85 | 2050 | .callback_ops = &nfs4_close_ops, |
101070ca | 2051 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2052 | .flags = RPC_TASK_ASYNC, |
2053 | }; | |
9512135d | 2054 | int status = -ENOMEM; |
1da177e4 | 2055 | |
8535b2be | 2056 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2057 | if (calldata == NULL) |
9512135d | 2058 | goto out; |
4a35bd41 | 2059 | calldata->inode = state->inode; |
1da177e4 | 2060 | calldata->state = state; |
4a35bd41 | 2061 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2062 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2063 | /* Serialization for the sequence id */ |
8535b2be | 2064 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2065 | if (calldata->arg.seqid == NULL) |
2066 | goto out_free_calldata; | |
dc0b027d | 2067 | calldata->arg.fmode = 0; |
a65318bf | 2068 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2069 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2070 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2071 | calldata->res.server = server; |
f7e8917a | 2072 | calldata->roc = roc; |
643168c2 | 2073 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2074 | |
1174dd1f TM |
2075 | msg.rpc_argp = &calldata->arg; |
2076 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2077 | task_setup_data.callback_data = calldata; |
2078 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2079 | if (IS_ERR(task)) |
2080 | return PTR_ERR(task); | |
a49c3c77 TM |
2081 | status = 0; |
2082 | if (wait) | |
2083 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2084 | rpc_put_task(task); |
a49c3c77 | 2085 | return status; |
9512135d TM |
2086 | out_free_calldata: |
2087 | kfree(calldata); | |
2088 | out: | |
f7e8917a FI |
2089 | if (roc) |
2090 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2091 | nfs4_put_open_state(state); |
2092 | nfs4_put_state_owner(sp); | |
9512135d | 2093 | return status; |
1da177e4 LT |
2094 | } |
2095 | ||
2b484297 | 2096 | static struct inode * |
cd9a1c0e | 2097 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2098 | { |
1da177e4 | 2099 | struct nfs4_state *state; |
1da177e4 | 2100 | |
565277f6 | 2101 | /* Protect against concurrent sillydeletes */ |
3d4ff43d | 2102 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2103 | if (IS_ERR(state)) |
2104 | return ERR_CAST(state); | |
cd9a1c0e | 2105 | ctx->state = state; |
f46e0bd3 | 2106 | return igrab(state->inode); |
1da177e4 LT |
2107 | } |
2108 | ||
1185a552 | 2109 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2110 | { |
2111 | if (ctx->state == NULL) | |
2112 | return; | |
2113 | if (is_sync) | |
643168c2 | 2114 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2115 | else |
643168c2 | 2116 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2117 | } |
1da177e4 LT |
2118 | |
2119 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2120 | { | |
43652ad5 BH |
2121 | struct nfs4_server_caps_arg args = { |
2122 | .fhandle = fhandle, | |
2123 | }; | |
1da177e4 LT |
2124 | struct nfs4_server_caps_res res = {}; |
2125 | struct rpc_message msg = { | |
2126 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2127 | .rpc_argp = &args, |
1da177e4 LT |
2128 | .rpc_resp = &res, |
2129 | }; | |
2130 | int status; | |
2131 | ||
7c513058 | 2132 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2133 | if (status == 0) { |
2134 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2135 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2136 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2137 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2138 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2139 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2140 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2141 | server->caps |= NFS_CAP_ACLS; | |
2142 | if (res.has_links != 0) | |
2143 | server->caps |= NFS_CAP_HARDLINKS; | |
2144 | if (res.has_symlinks != 0) | |
2145 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2146 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2147 | server->caps |= NFS_CAP_FILEID; | |
2148 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2149 | server->caps |= NFS_CAP_MODE; | |
2150 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2151 | server->caps |= NFS_CAP_NLINK; | |
2152 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2153 | server->caps |= NFS_CAP_OWNER; | |
2154 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2155 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2156 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2157 | server->caps |= NFS_CAP_ATIME; | |
2158 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2159 | server->caps |= NFS_CAP_CTIME; | |
2160 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2161 | server->caps |= NFS_CAP_MTIME; | |
2162 | ||
a65318bf TM |
2163 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2164 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2165 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2166 | server->acl_bitmask = res.acl_bitmask; |
2167 | } | |
cccef3b9 | 2168 | |
1da177e4 LT |
2169 | return status; |
2170 | } | |
2171 | ||
55a97593 | 2172 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2173 | { |
2174 | struct nfs4_exception exception = { }; | |
2175 | int err; | |
2176 | do { | |
2177 | err = nfs4_handle_exception(server, | |
2178 | _nfs4_server_capabilities(server, fhandle), | |
2179 | &exception); | |
2180 | } while (exception.retry); | |
2181 | return err; | |
2182 | } | |
2183 | ||
2184 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2185 | struct nfs_fsinfo *info) | |
2186 | { | |
1da177e4 LT |
2187 | struct nfs4_lookup_root_arg args = { |
2188 | .bitmask = nfs4_fattr_bitmap, | |
2189 | }; | |
2190 | struct nfs4_lookup_res res = { | |
2191 | .server = server, | |
0e574af1 | 2192 | .fattr = info->fattr, |
1da177e4 LT |
2193 | .fh = fhandle, |
2194 | }; | |
2195 | struct rpc_message msg = { | |
2196 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2197 | .rpc_argp = &args, | |
2198 | .rpc_resp = &res, | |
2199 | }; | |
008f55d0 | 2200 | |
0e574af1 | 2201 | nfs_fattr_init(info->fattr); |
7c513058 | 2202 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2203 | } |
2204 | ||
2205 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2206 | struct nfs_fsinfo *info) | |
2207 | { | |
2208 | struct nfs4_exception exception = { }; | |
2209 | int err; | |
2210 | do { | |
fb8a5ba8 BS |
2211 | err = _nfs4_lookup_root(server, fhandle, info); |
2212 | switch (err) { | |
2213 | case 0: | |
2214 | case -NFS4ERR_WRONGSEC: | |
2215 | break; | |
2216 | default: | |
2217 | err = nfs4_handle_exception(server, err, &exception); | |
2218 | } | |
1da177e4 LT |
2219 | } while (exception.retry); |
2220 | return err; | |
2221 | } | |
2222 | ||
8f70e95f BS |
2223 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2224 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2225 | { | |
2226 | struct rpc_auth *auth; | |
2227 | int ret; | |
2228 | ||
2229 | auth = rpcauth_create(flavor, server->client); | |
2230 | if (!auth) { | |
2231 | ret = -EIO; | |
2232 | goto out; | |
2233 | } | |
2234 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2235 | out: |
2236 | return ret; | |
2237 | } | |
2238 | ||
801a16dc | 2239 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2240 | struct nfs_fsinfo *info) |
1da177e4 | 2241 | { |
8f70e95f | 2242 | int i, len, status = 0; |
0fabee24 | 2243 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2244 | |
801a16dc BS |
2245 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2246 | flav_array[len] = RPC_AUTH_NULL; | |
2247 | len += 1; | |
8f70e95f BS |
2248 | |
2249 | for (i = 0; i < len; i++) { | |
2250 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2251 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2252 | continue; |
2253 | break; | |
8f70e95f | 2254 | } |
fb8a5ba8 BS |
2255 | /* |
2256 | * -EACCESS could mean that the user doesn't have correct permissions | |
2257 | * to access the mount. It could also mean that we tried to mount | |
2258 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2259 | * existing mount programs don't handle -EACCES very well so it should | |
2260 | * be mapped to -EPERM instead. | |
2261 | */ | |
2262 | if (status == -EACCES) | |
2263 | status = -EPERM; | |
801a16dc BS |
2264 | return status; |
2265 | } | |
2266 | ||
2267 | /* | |
2268 | * get the file handle for the "/" directory on the server | |
2269 | */ | |
2270 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2271 | struct nfs_fsinfo *info) | |
2272 | { | |
fca78d6d | 2273 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2274 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2275 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2276 | /* | |
2277 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2278 | * by nfs4_map_errors() as this function exits. | |
2279 | */ | |
fca78d6d | 2280 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2281 | if (status == 0) |
2282 | status = nfs4_server_capabilities(server, fhandle); | |
2283 | if (status == 0) | |
2284 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2285 | return nfs4_map_errors(status); |
1da177e4 LT |
2286 | } |
2287 | ||
533eb461 | 2288 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
6b97fd3d MN |
2289 | /* |
2290 | * Get locations and (maybe) other attributes of a referral. | |
2291 | * Note that we'll actually follow the referral later when | |
2292 | * we detect fsid mismatch in inode revalidation | |
2293 | */ | |
533eb461 AA |
2294 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, |
2295 | struct nfs_fattr *fattr, struct nfs_fh *fhandle) | |
6b97fd3d MN |
2296 | { |
2297 | int status = -ENOMEM; | |
2298 | struct page *page = NULL; | |
2299 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2300 | |
2301 | page = alloc_page(GFP_KERNEL); | |
2302 | if (page == NULL) | |
2303 | goto out; | |
2304 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2305 | if (locations == NULL) | |
2306 | goto out; | |
2307 | ||
c228fd3a | 2308 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2309 | if (status != 0) |
2310 | goto out; | |
2311 | /* Make sure server returned a different fsid for the referral */ | |
2312 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2313 | dprintk("%s: server did not return a different fsid for" |
2314 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2315 | status = -EIO; |
2316 | goto out; | |
2317 | } | |
533eb461 AA |
2318 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2319 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2320 | |
533eb461 | 2321 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2322 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2323 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2324 | out: | |
2325 | if (page) | |
2326 | __free_page(page); | |
5d7ca35a | 2327 | kfree(locations); |
6b97fd3d MN |
2328 | return status; |
2329 | } | |
2330 | ||
1da177e4 LT |
2331 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2332 | { | |
2333 | struct nfs4_getattr_arg args = { | |
2334 | .fh = fhandle, | |
2335 | .bitmask = server->attr_bitmask, | |
2336 | }; | |
2337 | struct nfs4_getattr_res res = { | |
2338 | .fattr = fattr, | |
2339 | .server = server, | |
2340 | }; | |
2341 | struct rpc_message msg = { | |
2342 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2343 | .rpc_argp = &args, | |
2344 | .rpc_resp = &res, | |
2345 | }; | |
2346 | ||
0e574af1 | 2347 | nfs_fattr_init(fattr); |
7c513058 | 2348 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2349 | } |
2350 | ||
2351 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2352 | { | |
2353 | struct nfs4_exception exception = { }; | |
2354 | int err; | |
2355 | do { | |
2356 | err = nfs4_handle_exception(server, | |
2357 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2358 | &exception); | |
2359 | } while (exception.retry); | |
2360 | return err; | |
2361 | } | |
2362 | ||
2363 | /* | |
2364 | * The file is not closed if it is opened due to the a request to change | |
2365 | * the size of the file. The open call will not be needed once the | |
2366 | * VFS layer lookup-intents are implemented. | |
2367 | * | |
2368 | * Close is called when the inode is destroyed. | |
2369 | * If we haven't opened the file for O_WRONLY, we | |
2370 | * need to in the size_change case to obtain a stateid. | |
2371 | * | |
2372 | * Got race? | |
2373 | * Because OPEN is always done by name in nfsv4, it is | |
2374 | * possible that we opened a different file by the same | |
2375 | * name. We can recognize this race condition, but we | |
2376 | * can't do anything about it besides returning an error. | |
2377 | * | |
2378 | * This will be fixed with VFS changes (lookup-intent). | |
2379 | */ | |
2380 | static int | |
2381 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2382 | struct iattr *sattr) | |
2383 | { | |
08e9eac4 | 2384 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2385 | struct rpc_cred *cred = NULL; |
d530838b | 2386 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2387 | int status; |
2388 | ||
8a1636c4 BH |
2389 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2390 | pnfs_return_layout(inode); | |
2391 | ||
0e574af1 | 2392 | nfs_fattr_init(fattr); |
1da177e4 | 2393 | |
d530838b | 2394 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2395 | if (sattr->ia_valid & ATTR_FILE) { |
2396 | struct nfs_open_context *ctx; | |
2397 | ||
2398 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2399 | if (ctx) { |
2400 | cred = ctx->cred; | |
2401 | state = ctx->state; | |
2402 | } | |
659bfcd6 | 2403 | } |
08e9eac4 | 2404 | |
659bfcd6 | 2405 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2406 | if (status == 0) |
2407 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2408 | return status; |
2409 | } | |
2410 | ||
7c513058 BS |
2411 | static int _nfs4_proc_lookupfh(struct rpc_clnt *clnt, struct nfs_server *server, |
2412 | const struct nfs_fh *dirfh, const struct qstr *name, | |
2413 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2b3de441 DH |
2414 | { |
2415 | int status; | |
2416 | struct nfs4_lookup_arg args = { | |
2417 | .bitmask = server->attr_bitmask, | |
2418 | .dir_fh = dirfh, | |
2419 | .name = name, | |
2420 | }; | |
2421 | struct nfs4_lookup_res res = { | |
2422 | .server = server, | |
2423 | .fattr = fattr, | |
2424 | .fh = fhandle, | |
2425 | }; | |
2426 | struct rpc_message msg = { | |
2427 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2428 | .rpc_argp = &args, | |
2429 | .rpc_resp = &res, | |
2430 | }; | |
2431 | ||
2432 | nfs_fattr_init(fattr); | |
2433 | ||
2434 | dprintk("NFS call lookupfh %s\n", name->name); | |
7c513058 | 2435 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
2b3de441 | 2436 | dprintk("NFS reply lookupfh: %d\n", status); |
2b3de441 DH |
2437 | return status; |
2438 | } | |
2439 | ||
2440 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
2441 | struct qstr *name, struct nfs_fh *fhandle, | |
2442 | struct nfs_fattr *fattr) | |
2443 | { | |
2444 | struct nfs4_exception exception = { }; | |
2445 | int err; | |
2446 | do { | |
7c513058 | 2447 | err = _nfs4_proc_lookupfh(server->client, server, dirfh, name, fhandle, fattr); |
4e56e082 TM |
2448 | /* FIXME: !!!! */ |
2449 | if (err == -NFS4ERR_MOVED) { | |
2450 | err = -EREMOTE; | |
2451 | break; | |
2452 | } | |
2453 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
2454 | } while (exception.retry); |
2455 | return err; | |
2456 | } | |
2457 | ||
7c513058 BS |
2458 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2459 | const struct qstr *name, struct nfs_fh *fhandle, | |
2460 | struct nfs_fattr *fattr) | |
1da177e4 | 2461 | { |
4e56e082 | 2462 | int status; |
1da177e4 LT |
2463 | |
2464 | dprintk("NFS call lookup %s\n", name->name); | |
7c513058 | 2465 | status = _nfs4_proc_lookupfh(clnt, NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
2466 | if (status == -NFS4ERR_MOVED) |
2467 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
2468 | dprintk("NFS reply lookup: %d\n", status); |
2469 | return status; | |
2470 | } | |
2471 | ||
7ebb9315 BS |
2472 | void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh) |
2473 | { | |
2474 | memset(fh, 0, sizeof(struct nfs_fh)); | |
2475 | fattr->fsid.major = 1; | |
2476 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
2477 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT; | |
2478 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
2479 | fattr->nlink = 2; | |
2480 | } | |
2481 | ||
7c513058 BS |
2482 | static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, |
2483 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1da177e4 LT |
2484 | { |
2485 | struct nfs4_exception exception = { }; | |
2486 | int err; | |
2487 | do { | |
2488 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
7c513058 | 2489 | _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr), |
1da177e4 | 2490 | &exception); |
7ebb9315 BS |
2491 | if (err == -EPERM) |
2492 | nfs_fixup_secinfo_attributes(fattr, fhandle); | |
1da177e4 LT |
2493 | } while (exception.retry); |
2494 | return err; | |
2495 | } | |
2496 | ||
2497 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2498 | { | |
76b32999 | 2499 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2500 | struct nfs4_accessargs args = { |
2501 | .fh = NFS_FH(inode), | |
76b32999 TM |
2502 | .bitmask = server->attr_bitmask, |
2503 | }; | |
2504 | struct nfs4_accessres res = { | |
2505 | .server = server, | |
1da177e4 | 2506 | }; |
1da177e4 LT |
2507 | struct rpc_message msg = { |
2508 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2509 | .rpc_argp = &args, | |
2510 | .rpc_resp = &res, | |
2511 | .rpc_cred = entry->cred, | |
2512 | }; | |
2513 | int mode = entry->mask; | |
2514 | int status; | |
2515 | ||
2516 | /* | |
2517 | * Determine which access bits we want to ask for... | |
2518 | */ | |
2519 | if (mode & MAY_READ) | |
2520 | args.access |= NFS4_ACCESS_READ; | |
2521 | if (S_ISDIR(inode->i_mode)) { | |
2522 | if (mode & MAY_WRITE) | |
2523 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2524 | if (mode & MAY_EXEC) | |
2525 | args.access |= NFS4_ACCESS_LOOKUP; | |
2526 | } else { | |
2527 | if (mode & MAY_WRITE) | |
2528 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2529 | if (mode & MAY_EXEC) | |
2530 | args.access |= NFS4_ACCESS_EXECUTE; | |
2531 | } | |
c407d41a TM |
2532 | |
2533 | res.fattr = nfs_alloc_fattr(); | |
2534 | if (res.fattr == NULL) | |
2535 | return -ENOMEM; | |
2536 | ||
7c513058 | 2537 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2538 | if (!status) { |
2539 | entry->mask = 0; | |
2540 | if (res.access & NFS4_ACCESS_READ) | |
2541 | entry->mask |= MAY_READ; | |
2542 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2543 | entry->mask |= MAY_WRITE; | |
2544 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2545 | entry->mask |= MAY_EXEC; | |
c407d41a | 2546 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2547 | } |
c407d41a | 2548 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2549 | return status; |
2550 | } | |
2551 | ||
2552 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2553 | { | |
2554 | struct nfs4_exception exception = { }; | |
2555 | int err; | |
2556 | do { | |
2557 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2558 | _nfs4_proc_access(inode, entry), | |
2559 | &exception); | |
2560 | } while (exception.retry); | |
2561 | return err; | |
2562 | } | |
2563 | ||
2564 | /* | |
2565 | * TODO: For the time being, we don't try to get any attributes | |
2566 | * along with any of the zero-copy operations READ, READDIR, | |
2567 | * READLINK, WRITE. | |
2568 | * | |
2569 | * In the case of the first three, we want to put the GETATTR | |
2570 | * after the read-type operation -- this is because it is hard | |
2571 | * to predict the length of a GETATTR response in v4, and thus | |
2572 | * align the READ data correctly. This means that the GETATTR | |
2573 | * may end up partially falling into the page cache, and we should | |
2574 | * shift it into the 'tail' of the xdr_buf before processing. | |
2575 | * To do this efficiently, we need to know the total length | |
2576 | * of data received, which doesn't seem to be available outside | |
2577 | * of the RPC layer. | |
2578 | * | |
2579 | * In the case of WRITE, we also want to put the GETATTR after | |
2580 | * the operation -- in this case because we want to make sure | |
2581 | * we get the post-operation mtime and size. This means that | |
2582 | * we can't use xdr_encode_pages() as written: we need a variant | |
2583 | * of it which would leave room in the 'tail' iovec. | |
2584 | * | |
2585 | * Both of these changes to the XDR layer would in fact be quite | |
2586 | * minor, but I decided to leave them for a subsequent patch. | |
2587 | */ | |
2588 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2589 | unsigned int pgbase, unsigned int pglen) | |
2590 | { | |
2591 | struct nfs4_readlink args = { | |
2592 | .fh = NFS_FH(inode), | |
2593 | .pgbase = pgbase, | |
2594 | .pglen = pglen, | |
2595 | .pages = &page, | |
2596 | }; | |
f50c7000 | 2597 | struct nfs4_readlink_res res; |
1da177e4 LT |
2598 | struct rpc_message msg = { |
2599 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2600 | .rpc_argp = &args, | |
f50c7000 | 2601 | .rpc_resp = &res, |
1da177e4 LT |
2602 | }; |
2603 | ||
7c513058 | 2604 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2605 | } |
2606 | ||
2607 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2608 | unsigned int pgbase, unsigned int pglen) | |
2609 | { | |
2610 | struct nfs4_exception exception = { }; | |
2611 | int err; | |
2612 | do { | |
2613 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2614 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2615 | &exception); | |
2616 | } while (exception.retry); | |
2617 | return err; | |
2618 | } | |
2619 | ||
1da177e4 LT |
2620 | /* |
2621 | * Got race? | |
2622 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2623 | * Until then, this create/open method is prone to inefficiency and race | |
2624 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2625 | * placed on the wire. | |
2626 | * | |
2627 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2628 | * The file will be opened again in the subsequent VFS open call | |
2629 | * (nfs4_proc_file_open). | |
2630 | * | |
2631 | * The open for read will just hang around to be used by any process that | |
2632 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2633 | */ | |
2634 | ||
2635 | static int | |
2636 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2637 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2638 | { |
82a2c1b7 | 2639 | struct dentry *de = dentry; |
1da177e4 | 2640 | struct nfs4_state *state; |
c0204fd2 TM |
2641 | struct rpc_cred *cred = NULL; |
2642 | fmode_t fmode = 0; | |
1da177e4 LT |
2643 | int status = 0; |
2644 | ||
c0204fd2 TM |
2645 | if (ctx != NULL) { |
2646 | cred = ctx->cred; | |
3d4ff43d | 2647 | de = ctx->dentry; |
c0204fd2 | 2648 | fmode = ctx->mode; |
1da177e4 | 2649 | } |
a8a5da99 | 2650 | sattr->ia_mode &= ~current_umask(); |
82a2c1b7 | 2651 | state = nfs4_do_open(dir, de, fmode, flags, sattr, cred); |
d4d9cdcb | 2652 | d_drop(dentry); |
1da177e4 LT |
2653 | if (IS_ERR(state)) { |
2654 | status = PTR_ERR(state); | |
c0204fd2 | 2655 | goto out; |
1da177e4 | 2656 | } |
d4d9cdcb | 2657 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2658 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2659 | if (ctx != NULL) |
2660 | ctx->state = state; | |
02a913a7 | 2661 | else |
643168c2 | 2662 | nfs4_close_sync(state, fmode); |
1da177e4 LT |
2663 | out: |
2664 | return status; | |
2665 | } | |
2666 | ||
2667 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2668 | { | |
16e42959 | 2669 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2670 | struct nfs_removeargs args = { |
1da177e4 | 2671 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2672 | .name.len = name->len, |
2673 | .name.name = name->name, | |
16e42959 TM |
2674 | .bitmask = server->attr_bitmask, |
2675 | }; | |
4fdc17b2 | 2676 | struct nfs_removeres res = { |
16e42959 | 2677 | .server = server, |
1da177e4 | 2678 | }; |
1da177e4 | 2679 | struct rpc_message msg = { |
4fdc17b2 TM |
2680 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2681 | .rpc_argp = &args, | |
2682 | .rpc_resp = &res, | |
1da177e4 | 2683 | }; |
d346890b TM |
2684 | int status = -ENOMEM; |
2685 | ||
2686 | res.dir_attr = nfs_alloc_fattr(); | |
2687 | if (res.dir_attr == NULL) | |
2688 | goto out; | |
1da177e4 | 2689 | |
7c513058 | 2690 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
16e42959 TM |
2691 | if (status == 0) { |
2692 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2693 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2694 | } |
d346890b TM |
2695 | nfs_free_fattr(res.dir_attr); |
2696 | out: | |
1da177e4 LT |
2697 | return status; |
2698 | } | |
2699 | ||
2700 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2701 | { | |
2702 | struct nfs4_exception exception = { }; | |
2703 | int err; | |
2704 | do { | |
2705 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2706 | _nfs4_proc_remove(dir, name), | |
2707 | &exception); | |
2708 | } while (exception.retry); | |
2709 | return err; | |
2710 | } | |
2711 | ||
e4eff1a6 | 2712 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2713 | { |
e4eff1a6 TM |
2714 | struct nfs_server *server = NFS_SERVER(dir); |
2715 | struct nfs_removeargs *args = msg->rpc_argp; | |
2716 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2717 | |
a65318bf | 2718 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2719 | res->server = server; |
dfb4f309 | 2720 | res->seq_res.sr_slot = NULL; |
1da177e4 | 2721 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2722 | } |
2723 | ||
e4eff1a6 | 2724 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2725 | { |
e4eff1a6 TM |
2726 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2727 | ||
14516c3a TM |
2728 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2729 | return 0; | |
9e33bed5 | 2730 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2731 | return 0; |
2732 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2733 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2734 | return 1; |
1da177e4 LT |
2735 | } |
2736 | ||
d3d4152a JL |
2737 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2738 | { | |
2739 | struct nfs_server *server = NFS_SERVER(dir); | |
2740 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2741 | struct nfs_renameres *res = msg->rpc_resp; | |
2742 | ||
2743 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2744 | arg->bitmask = server->attr_bitmask; | |
2745 | res->server = server; | |
2746 | } | |
2747 | ||
2748 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2749 | struct inode *new_dir) | |
2750 | { | |
2751 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2752 | ||
2753 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2754 | return 0; | |
2755 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2756 | return 0; | |
2757 | ||
2758 | update_changeattr(old_dir, &res->old_cinfo); | |
2759 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2760 | update_changeattr(new_dir, &res->new_cinfo); | |
2761 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2762 | return 1; | |
2763 | } | |
2764 | ||
1da177e4 LT |
2765 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2766 | struct inode *new_dir, struct qstr *new_name) | |
2767 | { | |
6caf2c82 | 2768 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2769 | struct nfs_renameargs arg = { |
1da177e4 LT |
2770 | .old_dir = NFS_FH(old_dir), |
2771 | .new_dir = NFS_FH(new_dir), | |
2772 | .old_name = old_name, | |
2773 | .new_name = new_name, | |
6caf2c82 TM |
2774 | .bitmask = server->attr_bitmask, |
2775 | }; | |
e8582a8b | 2776 | struct nfs_renameres res = { |
6caf2c82 | 2777 | .server = server, |
1da177e4 | 2778 | }; |
1da177e4 LT |
2779 | struct rpc_message msg = { |
2780 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2781 | .rpc_argp = &arg, | |
2782 | .rpc_resp = &res, | |
2783 | }; | |
011fff72 | 2784 | int status = -ENOMEM; |
1da177e4 | 2785 | |
011fff72 TM |
2786 | res.old_fattr = nfs_alloc_fattr(); |
2787 | res.new_fattr = nfs_alloc_fattr(); | |
2788 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2789 | goto out; | |
1da177e4 | 2790 | |
7c513058 | 2791 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2792 | if (!status) { |
2793 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2794 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2795 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2796 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2797 | } |
011fff72 TM |
2798 | out: |
2799 | nfs_free_fattr(res.new_fattr); | |
2800 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2801 | return status; |
2802 | } | |
2803 | ||
2804 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2805 | struct inode *new_dir, struct qstr *new_name) | |
2806 | { | |
2807 | struct nfs4_exception exception = { }; | |
2808 | int err; | |
2809 | do { | |
2810 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2811 | _nfs4_proc_rename(old_dir, old_name, | |
2812 | new_dir, new_name), | |
2813 | &exception); | |
2814 | } while (exception.retry); | |
2815 | return err; | |
2816 | } | |
2817 | ||
2818 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2819 | { | |
91ba2eee | 2820 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2821 | struct nfs4_link_arg arg = { |
2822 | .fh = NFS_FH(inode), | |
2823 | .dir_fh = NFS_FH(dir), | |
2824 | .name = name, | |
91ba2eee TM |
2825 | .bitmask = server->attr_bitmask, |
2826 | }; | |
91ba2eee TM |
2827 | struct nfs4_link_res res = { |
2828 | .server = server, | |
1da177e4 | 2829 | }; |
1da177e4 LT |
2830 | struct rpc_message msg = { |
2831 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2832 | .rpc_argp = &arg, | |
91ba2eee | 2833 | .rpc_resp = &res, |
1da177e4 | 2834 | }; |
136f2627 TM |
2835 | int status = -ENOMEM; |
2836 | ||
2837 | res.fattr = nfs_alloc_fattr(); | |
2838 | res.dir_attr = nfs_alloc_fattr(); | |
2839 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2840 | goto out; | |
1da177e4 | 2841 | |
7c513058 | 2842 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2843 | if (!status) { |
2844 | update_changeattr(dir, &res.cinfo); | |
2845 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2846 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2847 | } |
136f2627 TM |
2848 | out: |
2849 | nfs_free_fattr(res.dir_attr); | |
2850 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2851 | return status; |
2852 | } | |
2853 | ||
2854 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2855 | { | |
2856 | struct nfs4_exception exception = { }; | |
2857 | int err; | |
2858 | do { | |
2859 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2860 | _nfs4_proc_link(inode, dir, name), | |
2861 | &exception); | |
2862 | } while (exception.retry); | |
2863 | return err; | |
2864 | } | |
2865 | ||
57dc9a57 TM |
2866 | struct nfs4_createdata { |
2867 | struct rpc_message msg; | |
2868 | struct nfs4_create_arg arg; | |
2869 | struct nfs4_create_res res; | |
2870 | struct nfs_fh fh; | |
2871 | struct nfs_fattr fattr; | |
2872 | struct nfs_fattr dir_fattr; | |
2873 | }; | |
2874 | ||
2875 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2876 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2877 | { | |
2878 | struct nfs4_createdata *data; | |
2879 | ||
2880 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2881 | if (data != NULL) { | |
2882 | struct nfs_server *server = NFS_SERVER(dir); | |
2883 | ||
2884 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2885 | data->msg.rpc_argp = &data->arg; | |
2886 | data->msg.rpc_resp = &data->res; | |
2887 | data->arg.dir_fh = NFS_FH(dir); | |
2888 | data->arg.server = server; | |
2889 | data->arg.name = name; | |
2890 | data->arg.attrs = sattr; | |
2891 | data->arg.ftype = ftype; | |
2892 | data->arg.bitmask = server->attr_bitmask; | |
2893 | data->res.server = server; | |
2894 | data->res.fh = &data->fh; | |
2895 | data->res.fattr = &data->fattr; | |
2896 | data->res.dir_fattr = &data->dir_fattr; | |
2897 | nfs_fattr_init(data->res.fattr); | |
2898 | nfs_fattr_init(data->res.dir_fattr); | |
2899 | } | |
2900 | return data; | |
2901 | } | |
2902 | ||
2903 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2904 | { | |
7c513058 | 2905 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 2906 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
2907 | if (status == 0) { |
2908 | update_changeattr(dir, &data->res.dir_cinfo); | |
2909 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2910 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2911 | } | |
2912 | return status; | |
2913 | } | |
2914 | ||
2915 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2916 | { | |
2917 | kfree(data); | |
2918 | } | |
2919 | ||
4f390c15 | 2920 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2921 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2922 | { |
57dc9a57 TM |
2923 | struct nfs4_createdata *data; |
2924 | int status = -ENAMETOOLONG; | |
1da177e4 | 2925 | |
94a6d753 | 2926 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2927 | goto out; |
4f390c15 | 2928 | |
57dc9a57 TM |
2929 | status = -ENOMEM; |
2930 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2931 | if (data == NULL) | |
2932 | goto out; | |
2933 | ||
2934 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2935 | data->arg.u.symlink.pages = &page; | |
2936 | data->arg.u.symlink.len = len; | |
1da177e4 | 2937 | |
57dc9a57 TM |
2938 | status = nfs4_do_create(dir, dentry, data); |
2939 | ||
2940 | nfs4_free_createdata(data); | |
2941 | out: | |
1da177e4 LT |
2942 | return status; |
2943 | } | |
2944 | ||
4f390c15 | 2945 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2946 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2947 | { |
2948 | struct nfs4_exception exception = { }; | |
2949 | int err; | |
2950 | do { | |
2951 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2952 | _nfs4_proc_symlink(dir, dentry, page, |
2953 | len, sattr), | |
1da177e4 LT |
2954 | &exception); |
2955 | } while (exception.retry); | |
2956 | return err; | |
2957 | } | |
2958 | ||
2959 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2960 | struct iattr *sattr) | |
2961 | { | |
57dc9a57 TM |
2962 | struct nfs4_createdata *data; |
2963 | int status = -ENOMEM; | |
1da177e4 | 2964 | |
57dc9a57 TM |
2965 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2966 | if (data == NULL) | |
2967 | goto out; | |
2968 | ||
2969 | status = nfs4_do_create(dir, dentry, data); | |
2970 | ||
2971 | nfs4_free_createdata(data); | |
2972 | out: | |
1da177e4 LT |
2973 | return status; |
2974 | } | |
2975 | ||
2976 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2977 | struct iattr *sattr) | |
2978 | { | |
2979 | struct nfs4_exception exception = { }; | |
2980 | int err; | |
a8a5da99 AK |
2981 | |
2982 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2983 | do { |
2984 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2985 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2986 | &exception); | |
2987 | } while (exception.retry); | |
2988 | return err; | |
2989 | } | |
2990 | ||
2991 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2992 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2993 | { |
2994 | struct inode *dir = dentry->d_inode; | |
2995 | struct nfs4_readdir_arg args = { | |
2996 | .fh = NFS_FH(dir), | |
56e4ebf8 | 2997 | .pages = pages, |
1da177e4 LT |
2998 | .pgbase = 0, |
2999 | .count = count, | |
96d25e53 | 3000 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3001 | .plus = plus, |
1da177e4 LT |
3002 | }; |
3003 | struct nfs4_readdir_res res; | |
3004 | struct rpc_message msg = { | |
3005 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3006 | .rpc_argp = &args, | |
3007 | .rpc_resp = &res, | |
3008 | .rpc_cred = cred, | |
3009 | }; | |
3010 | int status; | |
3011 | ||
3110ff80 | 3012 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3013 | dentry->d_parent->d_name.name, |
3014 | dentry->d_name.name, | |
3015 | (unsigned long long)cookie); | |
1da177e4 LT |
3016 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3017 | res.pgbase = args.pgbase; | |
7c513058 | 3018 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3019 | if (status >= 0) { |
1da177e4 | 3020 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3021 | status += args.pgbase; |
3022 | } | |
c4812998 TM |
3023 | |
3024 | nfs_invalidate_atime(dir); | |
3025 | ||
3110ff80 | 3026 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3027 | return status; |
3028 | } | |
3029 | ||
3030 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3031 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3032 | { |
3033 | struct nfs4_exception exception = { }; | |
3034 | int err; | |
3035 | do { | |
3036 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3037 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3038 | pages, count, plus), |
1da177e4 LT |
3039 | &exception); |
3040 | } while (exception.retry); | |
3041 | return err; | |
3042 | } | |
3043 | ||
3044 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3045 | struct iattr *sattr, dev_t rdev) | |
3046 | { | |
57dc9a57 TM |
3047 | struct nfs4_createdata *data; |
3048 | int mode = sattr->ia_mode; | |
3049 | int status = -ENOMEM; | |
1da177e4 LT |
3050 | |
3051 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3052 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3053 | |
3054 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3055 | if (data == NULL) | |
3056 | goto out; | |
3057 | ||
1da177e4 | 3058 | if (S_ISFIFO(mode)) |
57dc9a57 | 3059 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3060 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3061 | data->arg.ftype = NF4BLK; |
3062 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3063 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3064 | } |
3065 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3066 | data->arg.ftype = NF4CHR; |
3067 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3068 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3069 | } |
1da177e4 | 3070 | |
57dc9a57 TM |
3071 | status = nfs4_do_create(dir, dentry, data); |
3072 | ||
3073 | nfs4_free_createdata(data); | |
3074 | out: | |
1da177e4 LT |
3075 | return status; |
3076 | } | |
3077 | ||
3078 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3079 | struct iattr *sattr, dev_t rdev) | |
3080 | { | |
3081 | struct nfs4_exception exception = { }; | |
3082 | int err; | |
a8a5da99 AK |
3083 | |
3084 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3085 | do { |
3086 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3087 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3088 | &exception); | |
3089 | } while (exception.retry); | |
3090 | return err; | |
3091 | } | |
3092 | ||
3093 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3094 | struct nfs_fsstat *fsstat) | |
3095 | { | |
3096 | struct nfs4_statfs_arg args = { | |
3097 | .fh = fhandle, | |
3098 | .bitmask = server->attr_bitmask, | |
3099 | }; | |
24ad148a BH |
3100 | struct nfs4_statfs_res res = { |
3101 | .fsstat = fsstat, | |
3102 | }; | |
1da177e4 LT |
3103 | struct rpc_message msg = { |
3104 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3105 | .rpc_argp = &args, | |
24ad148a | 3106 | .rpc_resp = &res, |
1da177e4 LT |
3107 | }; |
3108 | ||
0e574af1 | 3109 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3110 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3111 | } |
3112 | ||
3113 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3114 | { | |
3115 | struct nfs4_exception exception = { }; | |
3116 | int err; | |
3117 | do { | |
3118 | err = nfs4_handle_exception(server, | |
3119 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3120 | &exception); | |
3121 | } while (exception.retry); | |
3122 | return err; | |
3123 | } | |
3124 | ||
3125 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3126 | struct nfs_fsinfo *fsinfo) | |
3127 | { | |
3128 | struct nfs4_fsinfo_arg args = { | |
3129 | .fh = fhandle, | |
3130 | .bitmask = server->attr_bitmask, | |
3131 | }; | |
3dda5e43 BH |
3132 | struct nfs4_fsinfo_res res = { |
3133 | .fsinfo = fsinfo, | |
3134 | }; | |
1da177e4 LT |
3135 | struct rpc_message msg = { |
3136 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3137 | .rpc_argp = &args, | |
3dda5e43 | 3138 | .rpc_resp = &res, |
1da177e4 LT |
3139 | }; |
3140 | ||
7c513058 | 3141 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3142 | } |
3143 | ||
3144 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3145 | { | |
3146 | struct nfs4_exception exception = { }; | |
3147 | int err; | |
3148 | ||
3149 | do { | |
3150 | err = nfs4_handle_exception(server, | |
3151 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3152 | &exception); | |
3153 | } while (exception.retry); | |
3154 | return err; | |
3155 | } | |
3156 | ||
3157 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3158 | { | |
0e574af1 | 3159 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3160 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3161 | } | |
3162 | ||
3163 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3164 | struct nfs_pathconf *pathconf) | |
3165 | { | |
3166 | struct nfs4_pathconf_arg args = { | |
3167 | .fh = fhandle, | |
3168 | .bitmask = server->attr_bitmask, | |
3169 | }; | |
d45b2989 BH |
3170 | struct nfs4_pathconf_res res = { |
3171 | .pathconf = pathconf, | |
3172 | }; | |
1da177e4 LT |
3173 | struct rpc_message msg = { |
3174 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3175 | .rpc_argp = &args, | |
d45b2989 | 3176 | .rpc_resp = &res, |
1da177e4 LT |
3177 | }; |
3178 | ||
3179 | /* None of the pathconf attributes are mandatory to implement */ | |
3180 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3181 | memset(pathconf, 0, sizeof(*pathconf)); | |
3182 | return 0; | |
3183 | } | |
3184 | ||
0e574af1 | 3185 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3186 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3187 | } |
3188 | ||
3189 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3190 | struct nfs_pathconf *pathconf) | |
3191 | { | |
3192 | struct nfs4_exception exception = { }; | |
3193 | int err; | |
3194 | ||
3195 | do { | |
3196 | err = nfs4_handle_exception(server, | |
3197 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3198 | &exception); | |
3199 | } while (exception.retry); | |
3200 | return err; | |
3201 | } | |
3202 | ||
d20581aa BH |
3203 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3204 | { | |
3205 | nfs_invalidate_atime(data->inode); | |
3206 | } | |
3207 | ||
cbdabc7f | 3208 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3209 | { |
ec06c096 | 3210 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3211 | |
9e33bed5 | 3212 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
0110ee15 | 3213 | nfs_restart_rpc(task, server->nfs_client); |
ec06c096 | 3214 | return -EAGAIN; |
1da177e4 | 3215 | } |
8850df99 | 3216 | |
d20581aa | 3217 | __nfs4_read_done_cb(data); |
1da177e4 | 3218 | if (task->tk_status > 0) |
ec06c096 TM |
3219 | renew_lease(server, data->timestamp); |
3220 | return 0; | |
1da177e4 LT |
3221 | } |
3222 | ||
cbdabc7f AA |
3223 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3224 | { | |
3225 | ||
3226 | dprintk("--> %s\n", __func__); | |
3227 | ||
3228 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3229 | return -EAGAIN; | |
3230 | ||
d20581aa BH |
3231 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3232 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3233 | } |
3234 | ||
bdc7f021 | 3235 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3236 | { |
1da177e4 | 3237 | data->timestamp = jiffies; |
cbdabc7f | 3238 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3239 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3240 | } |
3241 | ||
cbdabc7f AA |
3242 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3243 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3244 | { | |
3245 | dprintk("%s Reset task for i/o through\n", __func__); | |
3246 | put_lseg(data->lseg); | |
3247 | data->lseg = NULL; | |
3248 | /* offsets will differ in the dense stripe case */ | |
3249 | data->args.offset = data->mds_offset; | |
3250 | data->ds_clp = NULL; | |
3251 | data->args.fh = NFS_FH(data->inode); | |
3252 | data->read_done_cb = nfs4_read_done_cb; | |
3253 | task->tk_ops = data->mds_ops; | |
3254 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3255 | } | |
3256 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3257 | ||
b029bc9b | 3258 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3259 | { |
1da177e4 LT |
3260 | struct inode *inode = data->inode; |
3261 | ||
9e33bed5 | 3262 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
0110ee15 | 3263 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3264 | return -EAGAIN; |
1da177e4 | 3265 | } |
4f9838c7 | 3266 | if (task->tk_status >= 0) { |
1da177e4 | 3267 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3268 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3269 | } |
788e7a89 | 3270 | return 0; |
1da177e4 LT |
3271 | } |
3272 | ||
b029bc9b FI |
3273 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3274 | { | |
3275 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3276 | return -EAGAIN; | |
d20581aa BH |
3277 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3278 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3279 | } |
3280 | ||
a69aef14 FI |
3281 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3282 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3283 | { | |
3284 | dprintk("%s Reset task for i/o through\n", __func__); | |
3285 | put_lseg(data->lseg); | |
3286 | data->lseg = NULL; | |
3287 | data->ds_clp = NULL; | |
3288 | data->write_done_cb = nfs4_write_done_cb; | |
3289 | data->args.fh = NFS_FH(data->inode); | |
3290 | data->args.bitmask = data->res.server->cache_consistency_bitmask; | |
3291 | data->args.offset = data->mds_offset; | |
3292 | data->res.fattr = &data->fattr; | |
3293 | task->tk_ops = data->mds_ops; | |
3294 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3295 | } | |
3296 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3297 | ||
bdc7f021 | 3298 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3299 | { |
bdc7f021 TM |
3300 | struct nfs_server *server = NFS_SERVER(data->inode); |
3301 | ||
7ffd1064 FI |
3302 | if (data->lseg) { |
3303 | data->args.bitmask = NULL; | |
3304 | data->res.fattr = NULL; | |
3305 | } else | |
3306 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3307 | if (!data->write_done_cb) |
3308 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3309 | data->res.server = server; |
1da177e4 LT |
3310 | data->timestamp = jiffies; |
3311 | ||
bdc7f021 | 3312 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3313 | } |
3314 | ||
5f452431 | 3315 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3316 | { |
1da177e4 | 3317 | struct inode *inode = data->inode; |
14516c3a | 3318 | |
9e33bed5 | 3319 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
0110ee15 | 3320 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3321 | return -EAGAIN; |
1da177e4 | 3322 | } |
9e08a3c5 | 3323 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3324 | return 0; |
1da177e4 LT |
3325 | } |
3326 | ||
5f452431 FI |
3327 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
3328 | { | |
3329 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3330 | return -EAGAIN; | |
3331 | return data->write_done_cb(task, data); | |
3332 | } | |
3333 | ||
bdc7f021 | 3334 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3335 | { |
788e7a89 | 3336 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce FI |
3337 | |
3338 | if (data->lseg) { | |
3339 | data->args.bitmask = NULL; | |
3340 | data->res.fattr = NULL; | |
3341 | } else | |
3342 | data->args.bitmask = server->cache_consistency_bitmask; | |
5f452431 FI |
3343 | if (!data->write_done_cb) |
3344 | data->write_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3345 | data->res.server = server; |
bdc7f021 | 3346 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3347 | } |
3348 | ||
9bc4e3ca CL |
3349 | struct nfs4_renewdata { |
3350 | struct nfs_client *client; | |
3351 | unsigned long timestamp; | |
3352 | }; | |
3353 | ||
1da177e4 LT |
3354 | /* |
3355 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3356 | * standalone procedure for queueing an asynchronous RENEW. | |
3357 | */ | |
9bc4e3ca | 3358 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3359 | { |
9bc4e3ca CL |
3360 | struct nfs4_renewdata *data = calldata; |
3361 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3362 | |
0851de06 AB |
3363 | if (atomic_read(&clp->cl_count) > 1) |
3364 | nfs4_schedule_state_renewal(clp); | |
3365 | nfs_put_client(clp); | |
9bc4e3ca | 3366 | kfree(data); |
dc96aef9 AB |
3367 | } |
3368 | ||
9bc4e3ca | 3369 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3370 | { |
9bc4e3ca CL |
3371 | struct nfs4_renewdata *data = calldata; |
3372 | struct nfs_client *clp = data->client; | |
3373 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3374 | |
3375 | if (task->tk_status < 0) { | |
95baa25c TM |
3376 | /* Unless we're shutting down, schedule state recovery! */ |
3377 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0) | |
0400a6b0 | 3378 | nfs4_schedule_lease_recovery(clp); |
1da177e4 LT |
3379 | return; |
3380 | } | |
452e9352 | 3381 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3382 | } |
3383 | ||
963d8fe5 TM |
3384 | static const struct rpc_call_ops nfs4_renew_ops = { |
3385 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3386 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3387 | }; |
3388 | ||
adfa6f98 | 3389 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3390 | { |
3391 | struct rpc_message msg = { | |
3392 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3393 | .rpc_argp = clp, | |
b4454fe1 | 3394 | .rpc_cred = cred, |
1da177e4 | 3395 | }; |
9bc4e3ca | 3396 | struct nfs4_renewdata *data; |
1da177e4 | 3397 | |
0851de06 AB |
3398 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3399 | return -EIO; | |
b569ad34 | 3400 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3401 | if (data == NULL) |
3402 | return -ENOMEM; | |
3403 | data->client = clp; | |
3404 | data->timestamp = jiffies; | |
1da177e4 | 3405 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3406 | &nfs4_renew_ops, data); |
1da177e4 LT |
3407 | } |
3408 | ||
adfa6f98 | 3409 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3410 | { |
3411 | struct rpc_message msg = { | |
3412 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3413 | .rpc_argp = clp, | |
b4454fe1 | 3414 | .rpc_cred = cred, |
1da177e4 LT |
3415 | }; |
3416 | unsigned long now = jiffies; | |
3417 | int status; | |
3418 | ||
3419 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3420 | if (status < 0) | |
3421 | return status; | |
452e9352 | 3422 | do_renew_lease(clp, now); |
1da177e4 LT |
3423 | return 0; |
3424 | } | |
3425 | ||
aa1870af BF |
3426 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3427 | { | |
3428 | return (server->caps & NFS_CAP_ACLS) | |
3429 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3430 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3431 | } | |
3432 | ||
3433 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3434 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3435 | * the stack. | |
3436 | */ | |
3437 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3438 | ||
3439 | static void buf_to_pages(const void *buf, size_t buflen, | |
3440 | struct page **pages, unsigned int *pgbase) | |
3441 | { | |
3442 | const void *p = buf; | |
3443 | ||
3444 | *pgbase = offset_in_page(buf); | |
3445 | p -= *pgbase; | |
3446 | while (p < buf + buflen) { | |
3447 | *(pages++) = virt_to_page(p); | |
3448 | p += PAGE_CACHE_SIZE; | |
3449 | } | |
3450 | } | |
3451 | ||
e9e3d724 NH |
3452 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3453 | struct page **pages, unsigned int *pgbase) | |
3454 | { | |
3455 | struct page *newpage, **spages; | |
3456 | int rc = 0; | |
3457 | size_t len; | |
3458 | spages = pages; | |
3459 | ||
3460 | do { | |
43b7c3f0 | 3461 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3462 | newpage = alloc_page(GFP_KERNEL); |
3463 | ||
3464 | if (newpage == NULL) | |
3465 | goto unwind; | |
3466 | memcpy(page_address(newpage), buf, len); | |
3467 | buf += len; | |
3468 | buflen -= len; | |
3469 | *pages++ = newpage; | |
3470 | rc++; | |
3471 | } while (buflen != 0); | |
3472 | ||
3473 | return rc; | |
3474 | ||
3475 | unwind: | |
3476 | for(; rc > 0; rc--) | |
3477 | __free_page(spages[rc-1]); | |
3478 | return -ENOMEM; | |
3479 | } | |
3480 | ||
e50a1c2e BF |
3481 | struct nfs4_cached_acl { |
3482 | int cached; | |
3483 | size_t len; | |
3e9d4154 | 3484 | char data[0]; |
e50a1c2e BF |
3485 | }; |
3486 | ||
3487 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3488 | { | |
3489 | struct nfs_inode *nfsi = NFS_I(inode); | |
3490 | ||
3491 | spin_lock(&inode->i_lock); | |
3492 | kfree(nfsi->nfs4_acl); | |
3493 | nfsi->nfs4_acl = acl; | |
3494 | spin_unlock(&inode->i_lock); | |
3495 | } | |
3496 | ||
3497 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3498 | { | |
3499 | nfs4_set_cached_acl(inode, NULL); | |
3500 | } | |
3501 | ||
3502 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3503 | { | |
3504 | struct nfs_inode *nfsi = NFS_I(inode); | |
3505 | struct nfs4_cached_acl *acl; | |
3506 | int ret = -ENOENT; | |
3507 | ||
3508 | spin_lock(&inode->i_lock); | |
3509 | acl = nfsi->nfs4_acl; | |
3510 | if (acl == NULL) | |
3511 | goto out; | |
3512 | if (buf == NULL) /* user is just asking for length */ | |
3513 | goto out_len; | |
3514 | if (acl->cached == 0) | |
3515 | goto out; | |
3516 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3517 | if (acl->len > buflen) | |
3518 | goto out; | |
3519 | memcpy(buf, acl->data, acl->len); | |
3520 | out_len: | |
3521 | ret = acl->len; | |
3522 | out: | |
3523 | spin_unlock(&inode->i_lock); | |
3524 | return ret; | |
3525 | } | |
3526 | ||
3527 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3528 | { | |
3529 | struct nfs4_cached_acl *acl; | |
3530 | ||
3531 | if (buf && acl_len <= PAGE_SIZE) { | |
3532 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3533 | if (acl == NULL) | |
3534 | goto out; | |
3535 | acl->cached = 1; | |
3536 | memcpy(acl->data, buf, acl_len); | |
3537 | } else { | |
3538 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3539 | if (acl == NULL) | |
3540 | goto out; | |
3541 | acl->cached = 0; | |
3542 | } | |
3543 | acl->len = acl_len; | |
3544 | out: | |
3545 | nfs4_set_cached_acl(inode, acl); | |
3546 | } | |
3547 | ||
16b4289c | 3548 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3549 | { |
aa1870af BF |
3550 | struct page *pages[NFS4ACL_MAXPAGES]; |
3551 | struct nfs_getaclargs args = { | |
3552 | .fh = NFS_FH(inode), | |
3553 | .acl_pages = pages, | |
3554 | .acl_len = buflen, | |
3555 | }; | |
663c79b3 BH |
3556 | struct nfs_getaclres res = { |
3557 | .acl_len = buflen, | |
3558 | }; | |
e50a1c2e | 3559 | void *resp_buf; |
aa1870af BF |
3560 | struct rpc_message msg = { |
3561 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3562 | .rpc_argp = &args, | |
663c79b3 | 3563 | .rpc_resp = &res, |
aa1870af | 3564 | }; |
e50a1c2e | 3565 | struct page *localpage = NULL; |
aa1870af BF |
3566 | int ret; |
3567 | ||
e50a1c2e BF |
3568 | if (buflen < PAGE_SIZE) { |
3569 | /* As long as we're doing a round trip to the server anyway, | |
3570 | * let's be prepared for a page of acl data. */ | |
3571 | localpage = alloc_page(GFP_KERNEL); | |
3572 | resp_buf = page_address(localpage); | |
3573 | if (localpage == NULL) | |
3574 | return -ENOMEM; | |
3575 | args.acl_pages[0] = localpage; | |
3576 | args.acl_pgbase = 0; | |
663c79b3 | 3577 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3578 | } else { |
3579 | resp_buf = buf; | |
3580 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3581 | } | |
7c513058 | 3582 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
e50a1c2e BF |
3583 | if (ret) |
3584 | goto out_free; | |
663c79b3 BH |
3585 | if (res.acl_len > args.acl_len) |
3586 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3587 | else |
663c79b3 | 3588 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3589 | if (buf) { |
3590 | ret = -ERANGE; | |
663c79b3 | 3591 | if (res.acl_len > buflen) |
e50a1c2e BF |
3592 | goto out_free; |
3593 | if (localpage) | |
663c79b3 | 3594 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3595 | } |
663c79b3 | 3596 | ret = res.acl_len; |
e50a1c2e BF |
3597 | out_free: |
3598 | if (localpage) | |
3599 | __free_page(localpage); | |
aa1870af BF |
3600 | return ret; |
3601 | } | |
3602 | ||
16b4289c TM |
3603 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3604 | { | |
3605 | struct nfs4_exception exception = { }; | |
3606 | ssize_t ret; | |
3607 | do { | |
3608 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3609 | if (ret >= 0) | |
3610 | break; | |
3611 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3612 | } while (exception.retry); | |
3613 | return ret; | |
3614 | } | |
3615 | ||
e50a1c2e BF |
3616 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3617 | { | |
3618 | struct nfs_server *server = NFS_SERVER(inode); | |
3619 | int ret; | |
3620 | ||
3621 | if (!nfs4_server_supports_acls(server)) | |
3622 | return -EOPNOTSUPP; | |
3623 | ret = nfs_revalidate_inode(server, inode); | |
3624 | if (ret < 0) | |
3625 | return ret; | |
08a22b39 AK |
3626 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3627 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3628 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3629 | if (ret != -ENOENT) | |
3630 | return ret; | |
3631 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3632 | } | |
3633 | ||
16b4289c | 3634 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3635 | { |
3636 | struct nfs_server *server = NFS_SERVER(inode); | |
3637 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3638 | struct nfs_setaclargs arg = { | |
3639 | .fh = NFS_FH(inode), | |
3640 | .acl_pages = pages, | |
3641 | .acl_len = buflen, | |
3642 | }; | |
73c403a9 | 3643 | struct nfs_setaclres res; |
4b580ee3 BF |
3644 | struct rpc_message msg = { |
3645 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3646 | .rpc_argp = &arg, | |
73c403a9 | 3647 | .rpc_resp = &res, |
4b580ee3 | 3648 | }; |
e9e3d724 | 3649 | int ret, i; |
4b580ee3 BF |
3650 | |
3651 | if (!nfs4_server_supports_acls(server)) | |
3652 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3653 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3654 | if (i < 0) | |
3655 | return i; | |
642ac549 | 3656 | nfs_inode_return_delegation(inode); |
7c513058 | 3657 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3658 | |
3659 | /* | |
3660 | * Free each page after tx, so the only ref left is | |
3661 | * held by the network stack | |
3662 | */ | |
3663 | for (; i > 0; i--) | |
3664 | put_page(pages[i-1]); | |
3665 | ||
08a22b39 AK |
3666 | /* |
3667 | * Acl update can result in inode attribute update. | |
3668 | * so mark the attribute cache invalid. | |
3669 | */ | |
3670 | spin_lock(&inode->i_lock); | |
3671 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3672 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3673 | nfs_access_zap_cache(inode); |
3674 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3675 | return ret; |
3676 | } | |
3677 | ||
16b4289c TM |
3678 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3679 | { | |
3680 | struct nfs4_exception exception = { }; | |
3681 | int err; | |
3682 | do { | |
3683 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3684 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3685 | &exception); | |
3686 | } while (exception.retry); | |
3687 | return err; | |
3688 | } | |
3689 | ||
1da177e4 | 3690 | static int |
aa5190d0 | 3691 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3692 | { |
aa5190d0 TM |
3693 | struct nfs_client *clp = server->nfs_client; |
3694 | ||
3695 | if (task->tk_status >= 0) | |
1da177e4 LT |
3696 | return 0; |
3697 | switch(task->tk_status) { | |
9e33bed5 TM |
3698 | case -NFS4ERR_ADMIN_REVOKED: |
3699 | case -NFS4ERR_BAD_STATEID: | |
3700 | case -NFS4ERR_OPENMODE: | |
3701 | if (state == NULL) | |
3702 | break; | |
0400a6b0 TM |
3703 | nfs4_schedule_stateid_recovery(server, state); |
3704 | goto wait_on_recovery; | |
0ced63d1 TM |
3705 | case -NFS4ERR_EXPIRED: |
3706 | if (state != NULL) | |
3707 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3708 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3709 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3710 | nfs4_schedule_lease_recovery(clp); |
3711 | goto wait_on_recovery; | |
4745e315 AA |
3712 | #if defined(CONFIG_NFS_V4_1) |
3713 | case -NFS4ERR_BADSESSION: | |
3714 | case -NFS4ERR_BADSLOT: | |
3715 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3716 | case -NFS4ERR_DEADSESSION: | |
3717 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3718 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3719 | case -NFS4ERR_SEQ_MISORDERED: | |
3720 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3721 | task->tk_status); | |
0400a6b0 | 3722 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3723 | task->tk_status = 0; |
3724 | return -EAGAIN; | |
3725 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3726 | case -NFS4ERR_DELAY: |
aa5190d0 | 3727 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3728 | case -NFS4ERR_GRACE: |
2c643488 | 3729 | case -EKEYEXPIRED: |
1da177e4 LT |
3730 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3731 | task->tk_status = 0; | |
3732 | return -EAGAIN; | |
a8a4ae3a | 3733 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3734 | case -NFS4ERR_OLD_STATEID: |
3735 | task->tk_status = 0; | |
3736 | return -EAGAIN; | |
3737 | } | |
3738 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3739 | return 0; | |
0400a6b0 | 3740 | wait_on_recovery: |
a2c0b9e2 | 3741 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3742 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3743 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3744 | task->tk_status = 0; | |
3745 | return -EAGAIN; | |
1da177e4 LT |
3746 | } |
3747 | ||
bb8b27e5 TM |
3748 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3749 | unsigned short port, struct rpc_cred *cred, | |
3750 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3751 | { |
3752 | nfs4_verifier sc_verifier; | |
3753 | struct nfs4_setclientid setclientid = { | |
3754 | .sc_verifier = &sc_verifier, | |
3755 | .sc_prog = program, | |
f4eecd5d | 3756 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3757 | }; |
3758 | struct rpc_message msg = { | |
3759 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3760 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3761 | .rpc_resp = res, |
286d7d6a | 3762 | .rpc_cred = cred, |
1da177e4 | 3763 | }; |
bc4785cd | 3764 | __be32 *p; |
1da177e4 LT |
3765 | int loop = 0; |
3766 | int status; | |
3767 | ||
bc4785cd | 3768 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3769 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3770 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3771 | ||
3772 | for(;;) { | |
3773 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3774 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3775 | clp->cl_ipaddr, |
3776 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3777 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3778 | rpc_peeraddr2str(clp->cl_rpcclient, |
3779 | RPC_DISPLAY_PROTO), | |
78ea323b | 3780 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3781 | clp->cl_id_uniquifier); |
3782 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3783 | sizeof(setclientid.sc_netid), |
3784 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3785 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3786 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3787 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3788 | clp->cl_ipaddr, port >> 8, port & 255); |
3789 | ||
1bd714f2 | 3790 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3791 | if (status != -NFS4ERR_CLID_INUSE) |
3792 | break; | |
fd954ae1 TM |
3793 | if (loop != 0) { |
3794 | ++clp->cl_id_uniquifier; | |
1da177e4 | 3795 | break; |
fd954ae1 TM |
3796 | } |
3797 | ++loop; | |
3798 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
3799 | } |
3800 | return status; | |
3801 | } | |
3802 | ||
fd954ae1 | 3803 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
3804 | struct nfs4_setclientid_res *arg, |
3805 | struct rpc_cred *cred) | |
1da177e4 LT |
3806 | { |
3807 | struct nfs_fsinfo fsinfo; | |
3808 | struct rpc_message msg = { | |
3809 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3810 | .rpc_argp = arg, |
1da177e4 | 3811 | .rpc_resp = &fsinfo, |
286d7d6a | 3812 | .rpc_cred = cred, |
1da177e4 LT |
3813 | }; |
3814 | unsigned long now; | |
3815 | int status; | |
3816 | ||
3817 | now = jiffies; | |
1bd714f2 | 3818 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3819 | if (status == 0) { |
3820 | spin_lock(&clp->cl_lock); | |
3821 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3822 | clp->cl_last_renewal = now; | |
3823 | spin_unlock(&clp->cl_lock); | |
3824 | } | |
3825 | return status; | |
3826 | } | |
3827 | ||
fe650407 TM |
3828 | struct nfs4_delegreturndata { |
3829 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3830 | struct nfs4_delegreturnres res; |
fe650407 TM |
3831 | struct nfs_fh fh; |
3832 | nfs4_stateid stateid; | |
26e976a8 | 3833 | unsigned long timestamp; |
fa178f29 | 3834 | struct nfs_fattr fattr; |
fe650407 TM |
3835 | int rpc_status; |
3836 | }; | |
3837 | ||
fe650407 TM |
3838 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3839 | { | |
3840 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3841 | |
14516c3a TM |
3842 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3843 | return; | |
938e1010 | 3844 | |
79708861 RL |
3845 | switch (task->tk_status) { |
3846 | case -NFS4ERR_STALE_STATEID: | |
3847 | case -NFS4ERR_EXPIRED: | |
3848 | case 0: | |
fa178f29 | 3849 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3850 | break; |
3851 | default: | |
3852 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3853 | -EAGAIN) { | |
3854 | nfs_restart_rpc(task, data->res.server->nfs_client); | |
3855 | return; | |
3856 | } | |
3857 | } | |
3858 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3859 | } |
3860 | ||
3861 | static void nfs4_delegreturn_release(void *calldata) | |
3862 | { | |
fe650407 TM |
3863 | kfree(calldata); |
3864 | } | |
3865 | ||
938e1010 AA |
3866 | #if defined(CONFIG_NFS_V4_1) |
3867 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3868 | { | |
3869 | struct nfs4_delegreturndata *d_data; | |
3870 | ||
3871 | d_data = (struct nfs4_delegreturndata *)data; | |
3872 | ||
035168ab | 3873 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 AA |
3874 | &d_data->args.seq_args, |
3875 | &d_data->res.seq_res, 1, task)) | |
3876 | return; | |
3877 | rpc_call_start(task); | |
3878 | } | |
3879 | #endif /* CONFIG_NFS_V4_1 */ | |
3880 | ||
c8d149f3 | 3881 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3882 | #if defined(CONFIG_NFS_V4_1) |
3883 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3884 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3885 | .rpc_call_done = nfs4_delegreturn_done, |
3886 | .rpc_release = nfs4_delegreturn_release, | |
3887 | }; | |
3888 | ||
e6f81075 | 3889 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3890 | { |
3891 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3892 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3893 | struct rpc_task *task; |
5138fde0 TM |
3894 | struct rpc_message msg = { |
3895 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3896 | .rpc_cred = cred, | |
3897 | }; | |
c970aa85 TM |
3898 | struct rpc_task_setup task_setup_data = { |
3899 | .rpc_client = server->client, | |
5138fde0 | 3900 | .rpc_message = &msg, |
c970aa85 TM |
3901 | .callback_ops = &nfs4_delegreturn_ops, |
3902 | .flags = RPC_TASK_ASYNC, | |
3903 | }; | |
e6f81075 | 3904 | int status = 0; |
fe650407 | 3905 | |
8535b2be | 3906 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3907 | if (data == NULL) |
3908 | return -ENOMEM; | |
3909 | data->args.fhandle = &data->fh; | |
3910 | data->args.stateid = &data->stateid; | |
fa178f29 | 3911 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3912 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3913 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3914 | data->res.fattr = &data->fattr; |
3915 | data->res.server = server; | |
5138fde0 | 3916 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3917 | data->timestamp = jiffies; |
fe650407 TM |
3918 | data->rpc_status = 0; |
3919 | ||
c970aa85 | 3920 | task_setup_data.callback_data = data; |
1174dd1f TM |
3921 | msg.rpc_argp = &data->args; |
3922 | msg.rpc_resp = &data->res; | |
c970aa85 | 3923 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3924 | if (IS_ERR(task)) |
fe650407 | 3925 | return PTR_ERR(task); |
e6f81075 TM |
3926 | if (!issync) |
3927 | goto out; | |
fe650407 | 3928 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3929 | if (status != 0) |
3930 | goto out; | |
3931 | status = data->rpc_status; | |
3932 | if (status != 0) | |
3933 | goto out; | |
3934 | nfs_refresh_inode(inode, &data->fattr); | |
3935 | out: | |
e6b3c4db | 3936 | rpc_put_task(task); |
fe650407 | 3937 | return status; |
1da177e4 LT |
3938 | } |
3939 | ||
e6f81075 | 3940 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3941 | { |
3942 | struct nfs_server *server = NFS_SERVER(inode); | |
3943 | struct nfs4_exception exception = { }; | |
3944 | int err; | |
3945 | do { | |
e6f81075 | 3946 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3947 | switch (err) { |
3948 | case -NFS4ERR_STALE_STATEID: | |
3949 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3950 | case 0: |
3951 | return 0; | |
3952 | } | |
3953 | err = nfs4_handle_exception(server, err, &exception); | |
3954 | } while (exception.retry); | |
3955 | return err; | |
3956 | } | |
3957 | ||
3958 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3959 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3960 | ||
3961 | /* | |
3962 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3963 | */ | |
3964 | static unsigned long | |
3965 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3966 | { | |
150030b7 | 3967 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3968 | timeout <<= 1; |
3969 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3970 | return NFS4_LOCK_MAXTIMEOUT; | |
3971 | return timeout; | |
3972 | } | |
3973 | ||
1da177e4 LT |
3974 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3975 | { | |
3976 | struct inode *inode = state->inode; | |
3977 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3978 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3979 | struct nfs_lockt_args arg = { |
1da177e4 | 3980 | .fh = NFS_FH(inode), |
911d1aaf | 3981 | .fl = request, |
1da177e4 | 3982 | }; |
911d1aaf TM |
3983 | struct nfs_lockt_res res = { |
3984 | .denied = request, | |
1da177e4 LT |
3985 | }; |
3986 | struct rpc_message msg = { | |
3987 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3988 | .rpc_argp = &arg, | |
3989 | .rpc_resp = &res, | |
3990 | .rpc_cred = state->owner->so_cred, | |
3991 | }; | |
1da177e4 LT |
3992 | struct nfs4_lock_state *lsp; |
3993 | int status; | |
3994 | ||
911d1aaf | 3995 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3996 | status = nfs4_set_lock_state(state, request); |
3997 | if (status != 0) | |
3998 | goto out; | |
3999 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 4000 | arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 4001 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4002 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4003 | switch (status) { |
4004 | case 0: | |
4005 | request->fl_type = F_UNLCK; | |
4006 | break; | |
4007 | case -NFS4ERR_DENIED: | |
4008 | status = 0; | |
1da177e4 | 4009 | } |
70cc6487 | 4010 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4011 | out: |
1da177e4 LT |
4012 | return status; |
4013 | } | |
4014 | ||
4015 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4016 | { | |
4017 | struct nfs4_exception exception = { }; | |
4018 | int err; | |
4019 | ||
4020 | do { | |
4021 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4022 | _nfs4_proc_getlk(state, cmd, request), | |
4023 | &exception); | |
4024 | } while (exception.retry); | |
4025 | return err; | |
4026 | } | |
4027 | ||
4028 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4029 | { | |
4030 | int res = 0; | |
4031 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4032 | case FL_POSIX: | |
4033 | res = posix_lock_file_wait(file, fl); | |
4034 | break; | |
4035 | case FL_FLOCK: | |
4036 | res = flock_lock_file_wait(file, fl); | |
4037 | break; | |
4038 | default: | |
4039 | BUG(); | |
4040 | } | |
1da177e4 LT |
4041 | return res; |
4042 | } | |
4043 | ||
faf5f49c | 4044 | struct nfs4_unlockdata { |
911d1aaf TM |
4045 | struct nfs_locku_args arg; |
4046 | struct nfs_locku_res res; | |
faf5f49c TM |
4047 | struct nfs4_lock_state *lsp; |
4048 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4049 | struct file_lock fl; |
4050 | const struct nfs_server *server; | |
26e976a8 | 4051 | unsigned long timestamp; |
faf5f49c TM |
4052 | }; |
4053 | ||
911d1aaf TM |
4054 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4055 | struct nfs_open_context *ctx, | |
4056 | struct nfs4_lock_state *lsp, | |
4057 | struct nfs_seqid *seqid) | |
4058 | { | |
4059 | struct nfs4_unlockdata *p; | |
4060 | struct inode *inode = lsp->ls_state->inode; | |
4061 | ||
8535b2be | 4062 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4063 | if (p == NULL) |
4064 | return NULL; | |
4065 | p->arg.fh = NFS_FH(inode); | |
4066 | p->arg.fl = &p->fl; | |
4067 | p->arg.seqid = seqid; | |
c1d51931 | 4068 | p->res.seqid = seqid; |
911d1aaf TM |
4069 | p->arg.stateid = &lsp->ls_stateid; |
4070 | p->lsp = lsp; | |
4071 | atomic_inc(&lsp->ls_count); | |
4072 | /* Ensure we don't close file until we're done freeing locks! */ | |
4073 | p->ctx = get_nfs_open_context(ctx); | |
4074 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4075 | p->server = NFS_SERVER(inode); | |
4076 | return p; | |
4077 | } | |
4078 | ||
06f814a3 | 4079 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4080 | { |
963d8fe5 | 4081 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4082 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4083 | nfs4_put_lock_state(calldata->lsp); |
4084 | put_nfs_open_context(calldata->ctx); | |
4085 | kfree(calldata); | |
faf5f49c TM |
4086 | } |
4087 | ||
963d8fe5 | 4088 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4089 | { |
963d8fe5 | 4090 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4091 | |
14516c3a TM |
4092 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4093 | return; | |
faf5f49c TM |
4094 | switch (task->tk_status) { |
4095 | case 0: | |
4096 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 4097 | calldata->res.stateid.data, |
faf5f49c | 4098 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 4099 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4100 | break; |
9e33bed5 TM |
4101 | case -NFS4ERR_BAD_STATEID: |
4102 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4103 | case -NFS4ERR_STALE_STATEID: |
4104 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4105 | break; |
4106 | default: | |
9e33bed5 | 4107 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
0110ee15 | 4108 | nfs_restart_rpc(task, |
d61e612a | 4109 | calldata->server->nfs_client); |
faf5f49c | 4110 | } |
faf5f49c TM |
4111 | } |
4112 | ||
4ce70ada | 4113 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4114 | { |
4ce70ada | 4115 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4116 | |
911d1aaf | 4117 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4118 | return; |
4119 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4120 | /* Note: exit _without_ running nfs4_locku_done */ |
4121 | task->tk_action = NULL; | |
faf5f49c TM |
4122 | return; |
4123 | } | |
26e976a8 | 4124 | calldata->timestamp = jiffies; |
035168ab | 4125 | if (nfs4_setup_sequence(calldata->server, |
a893693c AA |
4126 | &calldata->arg.seq_args, |
4127 | &calldata->res.seq_res, 1, task)) | |
4128 | return; | |
5138fde0 | 4129 | rpc_call_start(task); |
faf5f49c TM |
4130 | } |
4131 | ||
963d8fe5 | 4132 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4133 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4134 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4135 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4136 | }; |
4137 | ||
a5d16a4d TM |
4138 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4139 | struct nfs_open_context *ctx, | |
4140 | struct nfs4_lock_state *lsp, | |
4141 | struct nfs_seqid *seqid) | |
4142 | { | |
4143 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4144 | struct rpc_message msg = { |
4145 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4146 | .rpc_cred = ctx->cred, | |
4147 | }; | |
c970aa85 TM |
4148 | struct rpc_task_setup task_setup_data = { |
4149 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4150 | .rpc_message = &msg, |
c970aa85 | 4151 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4152 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4153 | .flags = RPC_TASK_ASYNC, |
4154 | }; | |
a5d16a4d | 4155 | |
137d6aca FF |
4156 | /* Ensure this is an unlock - when canceling a lock, the |
4157 | * canceled lock is passed in, and it won't be an unlock. | |
4158 | */ | |
4159 | fl->fl_type = F_UNLCK; | |
4160 | ||
a5d16a4d TM |
4161 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4162 | if (data == NULL) { | |
4163 | nfs_free_seqid(seqid); | |
4164 | return ERR_PTR(-ENOMEM); | |
4165 | } | |
4166 | ||
1174dd1f TM |
4167 | msg.rpc_argp = &data->arg; |
4168 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4169 | task_setup_data.callback_data = data; |
4170 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4171 | } |
4172 | ||
faf5f49c TM |
4173 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4174 | { | |
19e03c57 | 4175 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4176 | struct nfs_seqid *seqid; |
1da177e4 | 4177 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4178 | struct rpc_task *task; |
4179 | int status = 0; | |
536ff0f8 | 4180 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4181 | |
8d0a8a9d | 4182 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4183 | /* Unlock _before_ we do the RPC call */ |
4184 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4185 | down_read(&nfsi->rwsem); |
4186 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4187 | up_read(&nfsi->rwsem); | |
9b073574 | 4188 | goto out; |
19e03c57 TM |
4189 | } |
4190 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4191 | if (status != 0) |
9b073574 TM |
4192 | goto out; |
4193 | /* Is this a delegated lock? */ | |
4194 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4195 | goto out; | |
8d0a8a9d | 4196 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4197 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4198 | status = -ENOMEM; |
911d1aaf | 4199 | if (seqid == NULL) |
9b073574 | 4200 | goto out; |
cd3758e3 | 4201 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4202 | status = PTR_ERR(task); |
4203 | if (IS_ERR(task)) | |
9b073574 | 4204 | goto out; |
a5d16a4d | 4205 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4206 | rpc_put_task(task); |
9b073574 | 4207 | out: |
536ff0f8 | 4208 | request->fl_flags = fl_flags; |
1da177e4 LT |
4209 | return status; |
4210 | } | |
4211 | ||
a5d16a4d TM |
4212 | struct nfs4_lockdata { |
4213 | struct nfs_lock_args arg; | |
4214 | struct nfs_lock_res res; | |
4215 | struct nfs4_lock_state *lsp; | |
4216 | struct nfs_open_context *ctx; | |
4217 | struct file_lock fl; | |
26e976a8 | 4218 | unsigned long timestamp; |
a5d16a4d TM |
4219 | int rpc_status; |
4220 | int cancelled; | |
66179efe | 4221 | struct nfs_server *server; |
a5d16a4d TM |
4222 | }; |
4223 | ||
4224 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4225 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4226 | gfp_t gfp_mask) | |
1da177e4 | 4227 | { |
a5d16a4d TM |
4228 | struct nfs4_lockdata *p; |
4229 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4230 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4231 | |
8535b2be | 4232 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4233 | if (p == NULL) |
4234 | return NULL; | |
4235 | ||
4236 | p->arg.fh = NFS_FH(inode); | |
4237 | p->arg.fl = &p->fl; | |
8535b2be | 4238 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4239 | if (p->arg.open_seqid == NULL) |
4240 | goto out_free; | |
8535b2be | 4241 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4242 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4243 | goto out_free_seqid; |
a5d16a4d | 4244 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4245 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 4246 | p->arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 4247 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4248 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4249 | p->lsp = lsp; |
66179efe | 4250 | p->server = server; |
a5d16a4d TM |
4251 | atomic_inc(&lsp->ls_count); |
4252 | p->ctx = get_nfs_open_context(ctx); | |
4253 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4254 | return p; | |
2f74c0a0 TM |
4255 | out_free_seqid: |
4256 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4257 | out_free: |
4258 | kfree(p); | |
4259 | return NULL; | |
4260 | } | |
4261 | ||
4262 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4263 | { | |
4264 | struct nfs4_lockdata *data = calldata; | |
4265 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4266 | |
3110ff80 | 4267 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4268 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4269 | return; | |
a5d16a4d TM |
4270 | /* Do we need to do an open_to_lock_owner? */ |
4271 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4272 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4273 | return; | |
a5d16a4d TM |
4274 | data->arg.open_stateid = &state->stateid; |
4275 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4276 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4277 | } else |
4278 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4279 | data->timestamp = jiffies; |
035168ab TM |
4280 | if (nfs4_setup_sequence(data->server, |
4281 | &data->arg.seq_args, | |
66179efe AA |
4282 | &data->res.seq_res, 1, task)) |
4283 | return; | |
5138fde0 | 4284 | rpc_call_start(task); |
3110ff80 | 4285 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4286 | } |
4287 | ||
b257957e AB |
4288 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4289 | { | |
4290 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4291 | nfs4_lock_prepare(task, calldata); | |
4292 | } | |
4293 | ||
a5d16a4d TM |
4294 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4295 | { | |
4296 | struct nfs4_lockdata *data = calldata; | |
4297 | ||
3110ff80 | 4298 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4299 | |
14516c3a TM |
4300 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4301 | return; | |
66179efe | 4302 | |
a5d16a4d | 4303 | data->rpc_status = task->tk_status; |
a5d16a4d | 4304 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4305 | if (data->rpc_status == 0) |
4306 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4307 | else | |
4308 | goto out; | |
4309 | } | |
4310 | if (data->rpc_status == 0) { | |
4311 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4312 | sizeof(data->lsp->ls_stateid.data)); | |
4313 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
3d4ff43d | 4314 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4315 | } |
a5d16a4d | 4316 | out: |
3110ff80 | 4317 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4318 | } |
4319 | ||
4320 | static void nfs4_lock_release(void *calldata) | |
4321 | { | |
4322 | struct nfs4_lockdata *data = calldata; | |
4323 | ||
3110ff80 | 4324 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4325 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4326 | if (data->cancelled != 0) { |
4327 | struct rpc_task *task; | |
4328 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4329 | data->arg.lock_seqid); | |
4330 | if (!IS_ERR(task)) | |
bf294b41 | 4331 | rpc_put_task_async(task); |
3110ff80 | 4332 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4333 | } else |
4334 | nfs_free_seqid(data->arg.lock_seqid); | |
4335 | nfs4_put_lock_state(data->lsp); | |
4336 | put_nfs_open_context(data->ctx); | |
4337 | kfree(data); | |
3110ff80 | 4338 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4339 | } |
4340 | ||
4341 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4342 | .rpc_call_prepare = nfs4_lock_prepare, | |
4343 | .rpc_call_done = nfs4_lock_done, | |
4344 | .rpc_release = nfs4_lock_release, | |
4345 | }; | |
4346 | ||
b257957e AB |
4347 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4348 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4349 | .rpc_call_done = nfs4_lock_done, | |
4350 | .rpc_release = nfs4_lock_release, | |
4351 | }; | |
4352 | ||
2bee72a6 TM |
4353 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4354 | { | |
2bee72a6 TM |
4355 | switch (error) { |
4356 | case -NFS4ERR_ADMIN_REVOKED: | |
4357 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4358 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4359 | if (new_lock_owner != 0 || |
4360 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4361 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4362 | break; |
4363 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4364 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4365 | case -NFS4ERR_EXPIRED: |
4366 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4367 | }; |
4368 | } | |
4369 | ||
afe6c27c | 4370 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4371 | { |
4372 | struct nfs4_lockdata *data; | |
4373 | struct rpc_task *task; | |
5138fde0 TM |
4374 | struct rpc_message msg = { |
4375 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4376 | .rpc_cred = state->owner->so_cred, | |
4377 | }; | |
c970aa85 TM |
4378 | struct rpc_task_setup task_setup_data = { |
4379 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4380 | .rpc_message = &msg, |
c970aa85 | 4381 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4382 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4383 | .flags = RPC_TASK_ASYNC, |
4384 | }; | |
a5d16a4d TM |
4385 | int ret; |
4386 | ||
3110ff80 | 4387 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4388 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4389 | fl->fl_u.nfs4_fl.owner, |
4390 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4391 | if (data == NULL) |
4392 | return -ENOMEM; | |
4393 | if (IS_SETLKW(cmd)) | |
4394 | data->arg.block = 1; | |
b257957e AB |
4395 | if (recovery_type > NFS_LOCK_NEW) { |
4396 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4397 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4398 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4399 | } | |
1174dd1f TM |
4400 | msg.rpc_argp = &data->arg; |
4401 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4402 | task_setup_data.callback_data = data; |
4403 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4404 | if (IS_ERR(task)) |
a5d16a4d | 4405 | return PTR_ERR(task); |
a5d16a4d TM |
4406 | ret = nfs4_wait_for_completion_rpc_task(task); |
4407 | if (ret == 0) { | |
4408 | ret = data->rpc_status; | |
2bee72a6 TM |
4409 | if (ret) |
4410 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4411 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4412 | } else |
4413 | data->cancelled = 1; | |
e6b3c4db | 4414 | rpc_put_task(task); |
3110ff80 | 4415 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4416 | return ret; |
1da177e4 LT |
4417 | } |
4418 | ||
4419 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4420 | { | |
202b50dc TM |
4421 | struct nfs_server *server = NFS_SERVER(state->inode); |
4422 | struct nfs4_exception exception = { }; | |
4423 | int err; | |
4424 | ||
4425 | do { | |
42a2d13e TM |
4426 | /* Cache the lock if possible... */ |
4427 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4428 | return 0; | |
afe6c27c | 4429 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4430 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4431 | break; |
4432 | nfs4_handle_exception(server, err, &exception); | |
4433 | } while (exception.retry); | |
4434 | return err; | |
1da177e4 LT |
4435 | } |
4436 | ||
4437 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4438 | { | |
202b50dc TM |
4439 | struct nfs_server *server = NFS_SERVER(state->inode); |
4440 | struct nfs4_exception exception = { }; | |
4441 | int err; | |
4442 | ||
6bfc93ef TM |
4443 | err = nfs4_set_lock_state(state, request); |
4444 | if (err != 0) | |
4445 | return err; | |
202b50dc | 4446 | do { |
42a2d13e TM |
4447 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4448 | return 0; | |
afe6c27c | 4449 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4450 | switch (err) { |
4451 | default: | |
4452 | goto out; | |
4453 | case -NFS4ERR_GRACE: | |
4454 | case -NFS4ERR_DELAY: | |
4455 | nfs4_handle_exception(server, err, &exception); | |
4456 | err = 0; | |
4457 | } | |
202b50dc | 4458 | } while (exception.retry); |
a9ed2e25 | 4459 | out: |
202b50dc | 4460 | return err; |
1da177e4 LT |
4461 | } |
4462 | ||
f062eb6c BS |
4463 | #if defined(CONFIG_NFS_V4_1) |
4464 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4465 | { | |
4466 | int status; | |
4467 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4468 | ||
4469 | status = nfs41_test_stateid(server, state); | |
4470 | if (status == NFS_OK) | |
4471 | return 0; | |
4472 | nfs41_free_stateid(server, state); | |
4473 | return nfs4_lock_expired(state, request); | |
4474 | } | |
4475 | #endif | |
4476 | ||
1da177e4 LT |
4477 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4478 | { | |
19e03c57 | 4479 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4480 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4481 | int status = -ENOLCK; |
1da177e4 | 4482 | |
8e469ebd TM |
4483 | if ((fl_flags & FL_POSIX) && |
4484 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4485 | goto out; | |
6bfc93ef | 4486 | /* Is this a delegated open? */ |
6bfc93ef TM |
4487 | status = nfs4_set_lock_state(state, request); |
4488 | if (status != 0) | |
4489 | goto out; | |
01c3b861 TM |
4490 | request->fl_flags |= FL_ACCESS; |
4491 | status = do_vfs_lock(request->fl_file, request); | |
4492 | if (status < 0) | |
4493 | goto out; | |
19e03c57 | 4494 | down_read(&nfsi->rwsem); |
01c3b861 | 4495 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4496 | /* Yes: cache locks! */ |
01c3b861 | 4497 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4498 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4499 | status = do_vfs_lock(request->fl_file, request); | |
4500 | goto out_unlock; | |
01c3b861 | 4501 | } |
afe6c27c | 4502 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4503 | if (status != 0) |
01c3b861 | 4504 | goto out_unlock; |
6bfc93ef | 4505 | /* Note: we always want to sleep here! */ |
01c3b861 | 4506 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4507 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4508 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4509 | out_unlock: |
19e03c57 | 4510 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4511 | out: |
4512 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4513 | return status; |
4514 | } | |
4515 | ||
4516 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4517 | { | |
4518 | struct nfs4_exception exception = { }; | |
4519 | int err; | |
4520 | ||
4521 | do { | |
965b5d67 TM |
4522 | err = _nfs4_proc_setlk(state, cmd, request); |
4523 | if (err == -NFS4ERR_DENIED) | |
4524 | err = -EAGAIN; | |
1da177e4 | 4525 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4526 | err, &exception); |
1da177e4 LT |
4527 | } while (exception.retry); |
4528 | return err; | |
4529 | } | |
4530 | ||
4531 | static int | |
4532 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4533 | { | |
4534 | struct nfs_open_context *ctx; | |
4535 | struct nfs4_state *state; | |
4536 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4537 | int status; | |
4538 | ||
4539 | /* verify open state */ | |
cd3758e3 | 4540 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4541 | state = ctx->state; |
4542 | ||
4543 | if (request->fl_start < 0 || request->fl_end < 0) | |
4544 | return -EINVAL; | |
4545 | ||
d953126a TM |
4546 | if (IS_GETLK(cmd)) { |
4547 | if (state != NULL) | |
4548 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4549 | return 0; | |
4550 | } | |
1da177e4 LT |
4551 | |
4552 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4553 | return -EINVAL; | |
4554 | ||
d953126a TM |
4555 | if (request->fl_type == F_UNLCK) { |
4556 | if (state != NULL) | |
4557 | return nfs4_proc_unlck(state, cmd, request); | |
4558 | return 0; | |
4559 | } | |
1da177e4 | 4560 | |
d953126a TM |
4561 | if (state == NULL) |
4562 | return -ENOLCK; | |
1da177e4 LT |
4563 | do { |
4564 | status = nfs4_proc_setlk(state, cmd, request); | |
4565 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4566 | break; | |
4567 | timeout = nfs4_set_lock_task_retry(timeout); | |
4568 | status = -ERESTARTSYS; | |
4569 | if (signalled()) | |
4570 | break; | |
4571 | } while(status < 0); | |
1da177e4 LT |
4572 | return status; |
4573 | } | |
4574 | ||
888e694c TM |
4575 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4576 | { | |
4577 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4578 | struct nfs4_exception exception = { }; | |
4579 | int err; | |
4580 | ||
4581 | err = nfs4_set_lock_state(state, fl); | |
4582 | if (err != 0) | |
4583 | goto out; | |
4584 | do { | |
afe6c27c | 4585 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4586 | switch (err) { |
4587 | default: | |
4588 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4589 | __func__, err); | |
4590 | case 0: | |
965b5d67 | 4591 | case -ESTALE: |
d5122201 TM |
4592 | goto out; |
4593 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4594 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4595 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4596 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4597 | nfs4_schedule_lease_recovery(server->nfs_client); |
4598 | goto out; | |
74e7bb73 RL |
4599 | case -NFS4ERR_BADSESSION: |
4600 | case -NFS4ERR_BADSLOT: | |
4601 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4602 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4603 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4604 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4605 | goto out; |
965b5d67 TM |
4606 | case -ERESTARTSYS: |
4607 | /* | |
4608 | * The show must go on: exit, but mark the | |
4609 | * stateid as needing recovery. | |
4610 | */ | |
4611 | case -NFS4ERR_ADMIN_REVOKED: | |
4612 | case -NFS4ERR_BAD_STATEID: | |
4613 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4614 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4615 | err = 0; |
4616 | goto out; | |
168667c4 TM |
4617 | case -EKEYEXPIRED: |
4618 | /* | |
4619 | * User RPCSEC_GSS context has expired. | |
4620 | * We cannot recover this stateid now, so | |
4621 | * skip it and allow recovery thread to | |
4622 | * proceed. | |
4623 | */ | |
4624 | err = 0; | |
4625 | goto out; | |
965b5d67 TM |
4626 | case -ENOMEM: |
4627 | case -NFS4ERR_DENIED: | |
4628 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4629 | err = 0; | |
4630 | goto out; | |
d5122201 TM |
4631 | case -NFS4ERR_DELAY: |
4632 | break; | |
4633 | } | |
888e694c TM |
4634 | err = nfs4_handle_exception(server, err, &exception); |
4635 | } while (exception.retry); | |
4636 | out: | |
4637 | return err; | |
4638 | } | |
6b3b5496 | 4639 | |
d3c7b7cc TM |
4640 | static void nfs4_release_lockowner_release(void *calldata) |
4641 | { | |
4642 | kfree(calldata); | |
4643 | } | |
4644 | ||
4645 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4646 | .rpc_release = nfs4_release_lockowner_release, | |
4647 | }; | |
4648 | ||
4649 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4650 | { | |
4651 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4652 | struct nfs_release_lockowner_args *args; | |
4653 | struct rpc_message msg = { | |
4654 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4655 | }; | |
4656 | ||
4657 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4658 | return; | |
4659 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4660 | if (!args) | |
4661 | return; | |
4662 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
4663 | args->lock_owner.id = lsp->ls_id.id; | |
d035c36c | 4664 | args->lock_owner.s_dev = server->s_dev; |
d3c7b7cc TM |
4665 | msg.rpc_argp = args; |
4666 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4667 | } | |
4668 | ||
aa1870af BF |
4669 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4670 | ||
64c2ce8b AK |
4671 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4672 | const void *buf, size_t buflen, | |
4673 | int flags, int type) | |
6b3b5496 | 4674 | { |
64c2ce8b AK |
4675 | if (strcmp(key, "") != 0) |
4676 | return -EINVAL; | |
4b580ee3 | 4677 | |
64c2ce8b | 4678 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4679 | } |
4680 | ||
64c2ce8b AK |
4681 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4682 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4683 | { |
64c2ce8b AK |
4684 | if (strcmp(key, "") != 0) |
4685 | return -EINVAL; | |
aa1870af | 4686 | |
64c2ce8b | 4687 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4688 | } |
4689 | ||
64c2ce8b AK |
4690 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4691 | size_t list_len, const char *name, | |
4692 | size_t name_len, int type) | |
6b3b5496 | 4693 | { |
64c2ce8b | 4694 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4695 | |
096455a2 BF |
4696 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4697 | return 0; | |
64c2ce8b AK |
4698 | |
4699 | if (list && len <= list_len) | |
4700 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4701 | return len; |
6b3b5496 BF |
4702 | } |
4703 | ||
533eb461 AA |
4704 | /* |
4705 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4706 | */ | |
69aaaae1 TM |
4707 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4708 | { | |
533eb461 AA |
4709 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4710 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4711 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4712 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
69aaaae1 TM |
4713 | return; |
4714 | ||
4715 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4716 | NFS_ATTR_FATTR_NLINK; | |
4717 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4718 | fattr->nlink = 2; | |
4719 | } | |
4720 | ||
56659e99 | 4721 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4722 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4723 | { |
4724 | struct nfs_server *server = NFS_SERVER(dir); | |
4725 | u32 bitmask[2] = { | |
361e624f | 4726 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
4727 | }; |
4728 | struct nfs4_fs_locations_arg args = { | |
4729 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4730 | .name = name, |
683b57b4 TM |
4731 | .page = page, |
4732 | .bitmask = bitmask, | |
4733 | }; | |
22958463 BH |
4734 | struct nfs4_fs_locations_res res = { |
4735 | .fs_locations = fs_locations, | |
4736 | }; | |
683b57b4 TM |
4737 | struct rpc_message msg = { |
4738 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4739 | .rpc_argp = &args, | |
22958463 | 4740 | .rpc_resp = &res, |
683b57b4 TM |
4741 | }; |
4742 | int status; | |
4743 | ||
3110ff80 | 4744 | dprintk("%s: start\n", __func__); |
533eb461 AA |
4745 | |
4746 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
4747 | * is not supported */ | |
4748 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
4749 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
4750 | else | |
4751 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
4752 | ||
c228fd3a | 4753 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4754 | fs_locations->server = server; |
830b8e33 | 4755 | fs_locations->nlocations = 0; |
7c513058 | 4756 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 4757 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4758 | return status; |
4759 | } | |
4760 | ||
5a5ea0d4 BS |
4761 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
4762 | { | |
4763 | int status; | |
4764 | struct nfs4_secinfo_arg args = { | |
4765 | .dir_fh = NFS_FH(dir), | |
4766 | .name = name, | |
4767 | }; | |
4768 | struct nfs4_secinfo_res res = { | |
4769 | .flavors = flavors, | |
4770 | }; | |
4771 | struct rpc_message msg = { | |
4772 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
4773 | .rpc_argp = &args, | |
4774 | .rpc_resp = &res, | |
4775 | }; | |
4776 | ||
4777 | dprintk("NFS call secinfo %s\n", name->name); | |
4778 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
4779 | dprintk("NFS reply secinfo: %d\n", status); | |
4780 | return status; | |
4781 | } | |
4782 | ||
4783 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) | |
4784 | { | |
4785 | struct nfs4_exception exception = { }; | |
4786 | int err; | |
4787 | do { | |
4788 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
4789 | _nfs4_proc_secinfo(dir, name, flavors), | |
4790 | &exception); | |
4791 | } while (exception.retry); | |
4792 | return err; | |
4793 | } | |
4794 | ||
557134a3 | 4795 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4796 | /* |
4797 | * Check the exchange flags returned by the server for invalid flags, having | |
4798 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4799 | * DS flags set. | |
4800 | */ | |
4801 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4802 | { | |
4803 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4804 | goto out_inval; | |
4805 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4806 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4807 | goto out_inval; | |
4808 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4809 | goto out_inval; | |
4810 | return NFS_OK; | |
4811 | out_inval: | |
4812 | return -NFS4ERR_INVAL; | |
4813 | } | |
4814 | ||
78fe0f41 WAA |
4815 | static bool |
4816 | nfs41_same_server_scope(struct server_scope *a, struct server_scope *b) | |
4817 | { | |
4818 | if (a->server_scope_sz == b->server_scope_sz && | |
4819 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
4820 | return true; | |
4821 | ||
4822 | return false; | |
4823 | } | |
4824 | ||
99fe60d0 BH |
4825 | /* |
4826 | * nfs4_proc_exchange_id() | |
4827 | * | |
4828 | * Since the clientid has expired, all compounds using sessions | |
4829 | * associated with the stale clientid will be returning | |
4830 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4831 | * be in some phase of session reset. | |
4832 | */ | |
4d643d1d | 4833 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4834 | { |
4835 | nfs4_verifier verifier; | |
4836 | struct nfs41_exchange_id_args args = { | |
4837 | .client = clp, | |
357f54d6 | 4838 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4839 | }; |
4840 | struct nfs41_exchange_id_res res = { | |
4841 | .client = clp, | |
4842 | }; | |
4843 | int status; | |
4844 | struct rpc_message msg = { | |
4845 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4846 | .rpc_argp = &args, | |
4847 | .rpc_resp = &res, | |
4848 | .rpc_cred = cred, | |
4849 | }; | |
4850 | __be32 *p; | |
4851 | ||
4852 | dprintk("--> %s\n", __func__); | |
4853 | BUG_ON(clp == NULL); | |
a7b72103 | 4854 | |
99fe60d0 BH |
4855 | p = (u32 *)verifier.data; |
4856 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4857 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4858 | args.verifier = &verifier; | |
4859 | ||
c7a360b0 AA |
4860 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4861 | "%s/%s.%s/%u", | |
4862 | clp->cl_ipaddr, | |
4863 | init_utsname()->nodename, | |
4864 | init_utsname()->domainname, | |
4865 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4866 | |
78fe0f41 WAA |
4867 | res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); |
4868 | if (unlikely(!res.server_scope)) | |
4869 | return -ENOMEM; | |
4870 | ||
1bd714f2 | 4871 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c7a360b0 AA |
4872 | if (!status) |
4873 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
78fe0f41 WAA |
4874 | |
4875 | if (!status) { | |
4876 | if (clp->server_scope && | |
4877 | !nfs41_same_server_scope(clp->server_scope, | |
4878 | res.server_scope)) { | |
4879 | dprintk("%s: server_scope mismatch detected\n", | |
4880 | __func__); | |
4881 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
4882 | kfree(clp->server_scope); | |
4883 | clp->server_scope = NULL; | |
4884 | } | |
4885 | ||
4886 | if (!clp->server_scope) | |
4887 | clp->server_scope = res.server_scope; | |
4888 | else | |
4889 | kfree(res.server_scope); | |
4890 | } | |
4891 | ||
99fe60d0 BH |
4892 | dprintk("<-- %s status= %d\n", __func__, status); |
4893 | return status; | |
4894 | } | |
4895 | ||
2050f0cc AA |
4896 | struct nfs4_get_lease_time_data { |
4897 | struct nfs4_get_lease_time_args *args; | |
4898 | struct nfs4_get_lease_time_res *res; | |
4899 | struct nfs_client *clp; | |
4900 | }; | |
4901 | ||
4902 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4903 | void *calldata) | |
4904 | { | |
4905 | int ret; | |
4906 | struct nfs4_get_lease_time_data *data = | |
4907 | (struct nfs4_get_lease_time_data *)calldata; | |
4908 | ||
4909 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 4910 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
4911 | /* just setup sequence, do not trigger session recovery |
4912 | since we're invoked within one */ | |
4913 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 AB |
4914 | &data->args->la_seq_args, |
4915 | &data->res->lr_seq_res, 0, task); | |
2050f0cc AA |
4916 | |
4917 | BUG_ON(ret == -EAGAIN); | |
4918 | rpc_call_start(task); | |
4919 | dprintk("<-- %s\n", __func__); | |
4920 | } | |
4921 | ||
4922 | /* | |
4923 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4924 | * from sequence operation or clientid errors. | |
4925 | */ | |
4926 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4927 | { | |
4928 | struct nfs4_get_lease_time_data *data = | |
4929 | (struct nfs4_get_lease_time_data *)calldata; | |
4930 | ||
4931 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
4932 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
4933 | return; | |
2050f0cc AA |
4934 | switch (task->tk_status) { |
4935 | case -NFS4ERR_DELAY: | |
4936 | case -NFS4ERR_GRACE: | |
4937 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4938 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4939 | task->tk_status = 0; | |
a8a4ae3a AA |
4940 | /* fall through */ |
4941 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
0110ee15 | 4942 | nfs_restart_rpc(task, data->clp); |
2050f0cc AA |
4943 | return; |
4944 | } | |
2050f0cc AA |
4945 | dprintk("<-- %s\n", __func__); |
4946 | } | |
4947 | ||
4948 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4949 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4950 | .rpc_call_done = nfs4_get_lease_time_done, | |
4951 | }; | |
4952 | ||
4953 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4954 | { | |
4955 | struct rpc_task *task; | |
4956 | struct nfs4_get_lease_time_args args; | |
4957 | struct nfs4_get_lease_time_res res = { | |
4958 | .lr_fsinfo = fsinfo, | |
4959 | }; | |
4960 | struct nfs4_get_lease_time_data data = { | |
4961 | .args = &args, | |
4962 | .res = &res, | |
4963 | .clp = clp, | |
4964 | }; | |
4965 | struct rpc_message msg = { | |
4966 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4967 | .rpc_argp = &args, | |
4968 | .rpc_resp = &res, | |
4969 | }; | |
4970 | struct rpc_task_setup task_setup = { | |
4971 | .rpc_client = clp->cl_rpcclient, | |
4972 | .rpc_message = &msg, | |
4973 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
4974 | .callback_data = &data, |
4975 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
4976 | }; |
4977 | int status; | |
4978 | ||
2050f0cc AA |
4979 | dprintk("--> %s\n", __func__); |
4980 | task = rpc_run_task(&task_setup); | |
4981 | ||
4982 | if (IS_ERR(task)) | |
4983 | status = PTR_ERR(task); | |
4984 | else { | |
4985 | status = task->tk_status; | |
4986 | rpc_put_task(task); | |
4987 | } | |
4988 | dprintk("<-- %s return %d\n", __func__, status); | |
4989 | ||
4990 | return status; | |
4991 | } | |
4992 | ||
b73dafa7 RL |
4993 | /* |
4994 | * Reset a slot table | |
4995 | */ | |
104aeba4 AA |
4996 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
4997 | int ivalue) | |
ac72b7b3 | 4998 | { |
104aeba4 | 4999 | struct nfs4_slot *new = NULL; |
b73dafa7 | 5000 | int i; |
ac72b7b3 AA |
5001 | int ret = 0; |
5002 | ||
104aeba4 AA |
5003 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5004 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5005 | |
104aeba4 AA |
5006 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5007 | if (max_reqs != tbl->max_slots) { | |
5008 | ret = -ENOMEM; | |
5009 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 5010 | GFP_NOFS); |
104aeba4 AA |
5011 | if (!new) |
5012 | goto out; | |
5013 | ret = 0; | |
5014 | kfree(tbl->slots); | |
ac72b7b3 AA |
5015 | } |
5016 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
5017 | if (new) { |
5018 | tbl->slots = new; | |
5019 | tbl->max_slots = max_reqs; | |
5020 | } | |
5021 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 5022 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
5023 | spin_unlock(&tbl->slot_tbl_lock); |
5024 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5025 | tbl, tbl->slots, tbl->max_slots); | |
5026 | out: | |
5027 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5028 | return ret; | |
5029 | } | |
5030 | ||
b73dafa7 RL |
5031 | /* |
5032 | * Reset the forechannel and backchannel slot tables | |
5033 | */ | |
5034 | static int nfs4_reset_slot_tables(struct nfs4_session *session) | |
5035 | { | |
5036 | int status; | |
5037 | ||
5038 | status = nfs4_reset_slot_table(&session->fc_slot_table, | |
104aeba4 | 5039 | session->fc_attrs.max_reqs, 1); |
f8625a6a RL |
5040 | if (status) |
5041 | return status; | |
5042 | ||
5043 | status = nfs4_reset_slot_table(&session->bc_slot_table, | |
104aeba4 | 5044 | session->bc_attrs.max_reqs, 0); |
b73dafa7 RL |
5045 | return status; |
5046 | } | |
5047 | ||
f8625a6a RL |
5048 | /* Destroy the slot table */ |
5049 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5050 | { | |
5051 | if (session->fc_slot_table.slots != NULL) { | |
5052 | kfree(session->fc_slot_table.slots); | |
5053 | session->fc_slot_table.slots = NULL; | |
5054 | } | |
5055 | if (session->bc_slot_table.slots != NULL) { | |
5056 | kfree(session->bc_slot_table.slots); | |
5057 | session->bc_slot_table.slots = NULL; | |
5058 | } | |
5059 | return; | |
5060 | } | |
5061 | ||
fc931582 AA |
5062 | /* |
5063 | * Initialize slot table | |
5064 | */ | |
050047ce RL |
5065 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
5066 | int max_slots, int ivalue) | |
fc931582 | 5067 | { |
fc931582 AA |
5068 | struct nfs4_slot *slot; |
5069 | int ret = -ENOMEM; | |
5070 | ||
5071 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
5072 | ||
050047ce | 5073 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 5074 | |
8535b2be | 5075 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
5076 | if (!slot) |
5077 | goto out; | |
fc931582 AA |
5078 | ret = 0; |
5079 | ||
5080 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
5081 | tbl->max_slots = max_slots; |
5082 | tbl->slots = slot; | |
5083 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5084 | spin_unlock(&tbl->slot_tbl_lock); | |
5085 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5086 | tbl, tbl->slots, tbl->max_slots); | |
5087 | out: | |
5088 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5089 | return ret; | |
fc931582 AA |
5090 | } |
5091 | ||
050047ce RL |
5092 | /* |
5093 | * Initialize the forechannel and backchannel tables | |
5094 | */ | |
5095 | static int nfs4_init_slot_tables(struct nfs4_session *session) | |
5096 | { | |
f26468fb TM |
5097 | struct nfs4_slot_table *tbl; |
5098 | int status = 0; | |
050047ce | 5099 | |
f26468fb TM |
5100 | tbl = &session->fc_slot_table; |
5101 | if (tbl->slots == NULL) { | |
5102 | status = nfs4_init_slot_table(tbl, | |
5103 | session->fc_attrs.max_reqs, 1); | |
5104 | if (status) | |
5105 | return status; | |
5106 | } | |
050047ce | 5107 | |
f26468fb TM |
5108 | tbl = &session->bc_slot_table; |
5109 | if (tbl->slots == NULL) { | |
5110 | status = nfs4_init_slot_table(tbl, | |
5111 | session->bc_attrs.max_reqs, 0); | |
5112 | if (status) | |
5113 | nfs4_destroy_slot_tables(session); | |
5114 | } | |
f8625a6a RL |
5115 | |
5116 | return status; | |
557134a3 AA |
5117 | } |
5118 | ||
5119 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5120 | { | |
5121 | struct nfs4_session *session; | |
5122 | struct nfs4_slot_table *tbl; | |
5123 | ||
8535b2be | 5124 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5125 | if (!session) |
5126 | return NULL; | |
76db6d95 | 5127 | |
557134a3 | 5128 | tbl = &session->fc_slot_table; |
9dfdf404 | 5129 | tbl->highest_used_slotid = -1; |
557134a3 | 5130 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5131 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5132 | init_completion(&tbl->complete); |
f8625a6a RL |
5133 | |
5134 | tbl = &session->bc_slot_table; | |
9dfdf404 | 5135 | tbl->highest_used_slotid = -1; |
f8625a6a RL |
5136 | spin_lock_init(&tbl->slot_tbl_lock); |
5137 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5138 | init_completion(&tbl->complete); |
f8625a6a | 5139 | |
1055d76d TM |
5140 | session->session_state = 1<<NFS4_SESSION_INITING; |
5141 | ||
557134a3 AA |
5142 | session->clp = clp; |
5143 | return session; | |
5144 | } | |
5145 | ||
5146 | void nfs4_destroy_session(struct nfs4_session *session) | |
5147 | { | |
5a0ffe54 AA |
5148 | nfs4_proc_destroy_session(session); |
5149 | dprintk("%s Destroy backchannel for xprt %p\n", | |
5150 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
5151 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
5152 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5153 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5154 | kfree(session); |
5155 | } | |
5156 | ||
fc931582 AA |
5157 | /* |
5158 | * Initialize the values to be used by the client in CREATE_SESSION | |
5159 | * If nfs4_init_session set the fore channel request and response sizes, | |
5160 | * use them. | |
5161 | * | |
5162 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5163 | * always set csa_cachethis to FALSE because the current implementation | |
5164 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5165 | */ | |
5166 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5167 | { | |
5168 | struct nfs4_session *session = args->client->cl_session; | |
5169 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5170 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5171 | ||
5172 | if (mxrqst_sz == 0) | |
5173 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5174 | if (mxresp_sz == 0) | |
5175 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5176 | /* Fore channel attributes */ | |
fc931582 AA |
5177 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5178 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 AA |
5179 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
5180 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
5181 | ||
5182 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5183 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5184 | __func__, |
5185 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5186 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5187 | |
5188 | /* Back channel attributes */ | |
fc931582 AA |
5189 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5190 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5191 | args->bc_attrs.max_resp_sz_cached = 0; | |
5192 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5193 | args->bc_attrs.max_reqs = 1; | |
5194 | ||
5195 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5196 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5197 | __func__, | |
5198 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5199 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5200 | args->bc_attrs.max_reqs); | |
5201 | } | |
5202 | ||
43c2e885 | 5203 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5204 | { |
43c2e885 BF |
5205 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5206 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5207 | ||
43c2e885 BF |
5208 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5209 | return -EINVAL; | |
5210 | /* | |
5211 | * Our requested max_ops is the minimum we need; we're not | |
5212 | * prepared to break up compounds into smaller pieces than that. | |
5213 | * So, no point even trying to continue if the server won't | |
5214 | * cooperate: | |
5215 | */ | |
5216 | if (rcvd->max_ops < sent->max_ops) | |
5217 | return -EINVAL; | |
5218 | if (rcvd->max_reqs == 0) | |
5219 | return -EINVAL; | |
5220 | return 0; | |
8d35301d AA |
5221 | } |
5222 | ||
43c2e885 BF |
5223 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5224 | { | |
5225 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5226 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5227 | |
43c2e885 BF |
5228 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5229 | return -EINVAL; | |
5230 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5231 | return -EINVAL; | |
5232 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5233 | return -EINVAL; | |
5234 | /* These would render the backchannel useless: */ | |
5235 | if (rcvd->max_ops == 0) | |
5236 | return -EINVAL; | |
5237 | if (rcvd->max_reqs == 0) | |
5238 | return -EINVAL; | |
5239 | return 0; | |
5240 | } | |
8d35301d | 5241 | |
8d35301d AA |
5242 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5243 | struct nfs4_session *session) | |
5244 | { | |
43c2e885 | 5245 | int ret; |
8d35301d | 5246 | |
43c2e885 BF |
5247 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5248 | if (ret) | |
5249 | return ret; | |
5250 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5251 | } |
5252 | ||
fc931582 AA |
5253 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5254 | { | |
5255 | struct nfs4_session *session = clp->cl_session; | |
5256 | struct nfs41_create_session_args args = { | |
5257 | .client = clp, | |
5258 | .cb_program = NFS4_CALLBACK, | |
5259 | }; | |
5260 | struct nfs41_create_session_res res = { | |
5261 | .client = clp, | |
5262 | }; | |
5263 | struct rpc_message msg = { | |
5264 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5265 | .rpc_argp = &args, | |
5266 | .rpc_resp = &res, | |
5267 | }; | |
5268 | int status; | |
5269 | ||
5270 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5271 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5272 | |
1bd714f2 | 5273 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5274 | |
8d35301d AA |
5275 | if (!status) |
5276 | /* Verify the session's negotiated channel_attrs values */ | |
5277 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5278 | if (!status) { |
5279 | /* Increment the clientid slot sequence id */ | |
5280 | clp->cl_seqid++; | |
5281 | } | |
5282 | ||
5283 | return status; | |
5284 | } | |
5285 | ||
5286 | /* | |
5287 | * Issues a CREATE_SESSION operation to the server. | |
5288 | * It is the responsibility of the caller to verify the session is | |
5289 | * expired before calling this routine. | |
5290 | */ | |
f26468fb | 5291 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5292 | { |
5293 | int status; | |
5294 | unsigned *ptr; | |
fc931582 AA |
5295 | struct nfs4_session *session = clp->cl_session; |
5296 | ||
5297 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5298 | ||
fd954ae1 | 5299 | status = _nfs4_proc_create_session(clp); |
fc931582 AA |
5300 | if (status) |
5301 | goto out; | |
5302 | ||
f26468fb TM |
5303 | /* Init and reset the fore channel */ |
5304 | status = nfs4_init_slot_tables(session); | |
5305 | dprintk("slot table initialization returned %d\n", status); | |
5306 | if (status) | |
5307 | goto out; | |
5308 | status = nfs4_reset_slot_tables(session); | |
5309 | dprintk("slot table reset returned %d\n", status); | |
fc931582 AA |
5310 | if (status) |
5311 | goto out; | |
5312 | ||
5313 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5314 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5315 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5316 | out: |
5317 | dprintk("<-- %s\n", __func__); | |
5318 | return status; | |
5319 | } | |
5320 | ||
0f3e66c6 AA |
5321 | /* |
5322 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5323 | * The caller must serialize access to this routine. | |
5324 | */ | |
5325 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5326 | { | |
5327 | int status = 0; | |
5328 | struct rpc_message msg; | |
5329 | ||
5330 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5331 | ||
5332 | /* session is still being setup */ | |
5333 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5334 | return status; | |
5335 | ||
5336 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5337 | msg.rpc_argp = session; | |
5338 | msg.rpc_resp = NULL; | |
5339 | msg.rpc_cred = NULL; | |
1bd714f2 | 5340 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5341 | |
5342 | if (status) | |
5343 | printk(KERN_WARNING | |
5344 | "Got error %d from the server on DESTROY_SESSION. " | |
5345 | "Session has been destroyed regardless...\n", status); | |
5346 | ||
5347 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5348 | return status; | |
5349 | } | |
5350 | ||
fccba804 TM |
5351 | int nfs4_init_session(struct nfs_server *server) |
5352 | { | |
5353 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5354 | struct nfs4_session *session; |
68bf05ef | 5355 | unsigned int rsize, wsize; |
fccba804 TM |
5356 | int ret; |
5357 | ||
5358 | if (!nfs4_has_session(clp)) | |
5359 | return 0; | |
5360 | ||
1055d76d TM |
5361 | session = clp->cl_session; |
5362 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5363 | return 0; | |
5364 | ||
68bf05ef AA |
5365 | rsize = server->rsize; |
5366 | if (rsize == 0) | |
5367 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5368 | wsize = server->wsize; | |
5369 | if (wsize == 0) | |
5370 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5371 | ||
68bf05ef AA |
5372 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5373 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5374 | |
fccba804 TM |
5375 | ret = nfs4_recover_expired_lease(server); |
5376 | if (!ret) | |
5377 | ret = nfs4_check_client_ready(clp); | |
5378 | return ret; | |
5379 | } | |
5380 | ||
d83217c1 AA |
5381 | int nfs4_init_ds_session(struct nfs_client *clp) |
5382 | { | |
5383 | struct nfs4_session *session = clp->cl_session; | |
5384 | int ret; | |
5385 | ||
5386 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5387 | return 0; | |
5388 | ||
5389 | ret = nfs4_client_recover_expired_lease(clp); | |
5390 | if (!ret) | |
5391 | /* Test for the DS role */ | |
5392 | if (!is_ds_client(clp)) | |
5393 | ret = -ENODEV; | |
5394 | if (!ret) | |
5395 | ret = nfs4_check_client_ready(clp); | |
5396 | return ret; | |
5397 | ||
5398 | } | |
5399 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5400 | ||
5401 | ||
fc01cea9 AA |
5402 | /* |
5403 | * Renew the cl_session lease. | |
5404 | */ | |
d5f8d3fe TM |
5405 | struct nfs4_sequence_data { |
5406 | struct nfs_client *clp; | |
5407 | struct nfs4_sequence_args args; | |
5408 | struct nfs4_sequence_res res; | |
5409 | }; | |
5410 | ||
dc96aef9 AB |
5411 | static void nfs41_sequence_release(void *data) |
5412 | { | |
d5f8d3fe TM |
5413 | struct nfs4_sequence_data *calldata = data; |
5414 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5415 | |
7135840f AB |
5416 | if (atomic_read(&clp->cl_count) > 1) |
5417 | nfs4_schedule_state_renewal(clp); | |
5418 | nfs_put_client(clp); | |
d5f8d3fe | 5419 | kfree(calldata); |
dc96aef9 AB |
5420 | } |
5421 | ||
aa5190d0 TM |
5422 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5423 | { | |
5424 | switch(task->tk_status) { | |
5425 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5426 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5427 | return -EAGAIN; | |
5428 | default: | |
0400a6b0 | 5429 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5430 | } |
5431 | return 0; | |
5432 | } | |
5433 | ||
dc96aef9 | 5434 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5435 | { |
d5f8d3fe TM |
5436 | struct nfs4_sequence_data *calldata = data; |
5437 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5438 | |
14516c3a TM |
5439 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5440 | return; | |
fc01cea9 AA |
5441 | |
5442 | if (task->tk_status < 0) { | |
5443 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5444 | if (atomic_read(&clp->cl_count) == 1) |
5445 | goto out; | |
fc01cea9 | 5446 | |
aa5190d0 TM |
5447 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5448 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5449 | return; |
5450 | } | |
5451 | } | |
fc01cea9 | 5452 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5453 | out: |
fc01cea9 AA |
5454 | dprintk("<-- %s\n", __func__); |
5455 | } | |
5456 | ||
5457 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5458 | { | |
d5f8d3fe TM |
5459 | struct nfs4_sequence_data *calldata = data; |
5460 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5461 | struct nfs4_sequence_args *args; |
5462 | struct nfs4_sequence_res *res; | |
5463 | ||
fc01cea9 AA |
5464 | args = task->tk_msg.rpc_argp; |
5465 | res = task->tk_msg.rpc_resp; | |
5466 | ||
035168ab | 5467 | if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) |
fc01cea9 AA |
5468 | return; |
5469 | rpc_call_start(task); | |
5470 | } | |
5471 | ||
5472 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5473 | .rpc_call_done = nfs41_sequence_call_done, | |
5474 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5475 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5476 | }; |
5477 | ||
71ac6da9 | 5478 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5479 | { |
d5f8d3fe | 5480 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5481 | struct rpc_message msg = { |
5482 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5483 | .rpc_cred = cred, | |
5484 | }; | |
71ac6da9 TM |
5485 | struct rpc_task_setup task_setup_data = { |
5486 | .rpc_client = clp->cl_rpcclient, | |
5487 | .rpc_message = &msg, | |
5488 | .callback_ops = &nfs41_sequence_ops, | |
5489 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5490 | }; | |
fc01cea9 | 5491 | |
7135840f | 5492 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5493 | return ERR_PTR(-EIO); |
dfb4f309 | 5494 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5495 | if (calldata == NULL) { |
7135840f | 5496 | nfs_put_client(clp); |
71ac6da9 | 5497 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5498 | } |
d5f8d3fe TM |
5499 | msg.rpc_argp = &calldata->args; |
5500 | msg.rpc_resp = &calldata->res; | |
5501 | calldata->clp = clp; | |
71ac6da9 | 5502 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5503 | |
71ac6da9 TM |
5504 | return rpc_run_task(&task_setup_data); |
5505 | } | |
5506 | ||
5507 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5508 | { | |
5509 | struct rpc_task *task; | |
5510 | int ret = 0; | |
5511 | ||
5512 | task = _nfs41_proc_sequence(clp, cred); | |
5513 | if (IS_ERR(task)) | |
5514 | ret = PTR_ERR(task); | |
5515 | else | |
bf294b41 | 5516 | rpc_put_task_async(task); |
71ac6da9 TM |
5517 | dprintk("<-- %s status=%d\n", __func__, ret); |
5518 | return ret; | |
5519 | } | |
5520 | ||
5521 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5522 | { | |
5523 | struct rpc_task *task; | |
5524 | int ret; | |
5525 | ||
5526 | task = _nfs41_proc_sequence(clp, cred); | |
5527 | if (IS_ERR(task)) { | |
5528 | ret = PTR_ERR(task); | |
5529 | goto out; | |
5530 | } | |
5531 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5532 | if (!ret) { |
5533 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5534 | ||
5535 | if (task->tk_status == 0) | |
5536 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5537 | ret = task->tk_status; |
b4410c2f | 5538 | } |
71ac6da9 TM |
5539 | rpc_put_task(task); |
5540 | out: | |
5541 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5542 | return ret; | |
fc01cea9 AA |
5543 | } |
5544 | ||
fce5c838 RL |
5545 | struct nfs4_reclaim_complete_data { |
5546 | struct nfs_client *clp; | |
5547 | struct nfs41_reclaim_complete_args arg; | |
5548 | struct nfs41_reclaim_complete_res res; | |
5549 | }; | |
5550 | ||
5551 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5552 | { | |
5553 | struct nfs4_reclaim_complete_data *calldata = data; | |
5554 | ||
b257957e | 5555 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5556 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5557 | &calldata->arg.seq_args, | |
fce5c838 RL |
5558 | &calldata->res.seq_res, 0, task)) |
5559 | return; | |
5560 | ||
5561 | rpc_call_start(task); | |
5562 | } | |
5563 | ||
aa5190d0 TM |
5564 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5565 | { | |
5566 | switch(task->tk_status) { | |
5567 | case 0: | |
5568 | case -NFS4ERR_COMPLETE_ALREADY: | |
5569 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5570 | break; | |
5571 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5572 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5573 | /* fall through */ |
5574 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5575 | return -EAGAIN; |
5576 | default: | |
0400a6b0 | 5577 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5578 | } |
5579 | return 0; | |
5580 | } | |
5581 | ||
fce5c838 RL |
5582 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5583 | { | |
5584 | struct nfs4_reclaim_complete_data *calldata = data; | |
5585 | struct nfs_client *clp = calldata->clp; | |
5586 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5587 | ||
5588 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5589 | if (!nfs41_sequence_done(task, res)) |
5590 | return; | |
fce5c838 | 5591 | |
aa5190d0 TM |
5592 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5593 | rpc_restart_call_prepare(task); | |
5594 | return; | |
5595 | } | |
fce5c838 RL |
5596 | dprintk("<-- %s\n", __func__); |
5597 | } | |
5598 | ||
5599 | static void nfs4_free_reclaim_complete_data(void *data) | |
5600 | { | |
5601 | struct nfs4_reclaim_complete_data *calldata = data; | |
5602 | ||
5603 | kfree(calldata); | |
5604 | } | |
5605 | ||
5606 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5607 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5608 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5609 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5610 | }; | |
5611 | ||
5612 | /* | |
5613 | * Issue a global reclaim complete. | |
5614 | */ | |
5615 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5616 | { | |
5617 | struct nfs4_reclaim_complete_data *calldata; | |
5618 | struct rpc_task *task; | |
5619 | struct rpc_message msg = { | |
5620 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5621 | }; | |
5622 | struct rpc_task_setup task_setup_data = { | |
5623 | .rpc_client = clp->cl_rpcclient, | |
5624 | .rpc_message = &msg, | |
5625 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5626 | .flags = RPC_TASK_ASYNC, | |
5627 | }; | |
5628 | int status = -ENOMEM; | |
5629 | ||
5630 | dprintk("--> %s\n", __func__); | |
8535b2be | 5631 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5632 | if (calldata == NULL) |
5633 | goto out; | |
5634 | calldata->clp = clp; | |
5635 | calldata->arg.one_fs = 0; | |
fce5c838 RL |
5636 | |
5637 | msg.rpc_argp = &calldata->arg; | |
5638 | msg.rpc_resp = &calldata->res; | |
5639 | task_setup_data.callback_data = calldata; | |
5640 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5641 | if (IS_ERR(task)) { |
fce5c838 | 5642 | status = PTR_ERR(task); |
acf82b85 DC |
5643 | goto out; |
5644 | } | |
c34c32ea AA |
5645 | status = nfs4_wait_for_completion_rpc_task(task); |
5646 | if (status == 0) | |
5647 | status = task->tk_status; | |
fce5c838 | 5648 | rpc_put_task(task); |
acf82b85 | 5649 | return 0; |
fce5c838 RL |
5650 | out: |
5651 | dprintk("<-- %s status=%d\n", __func__, status); | |
5652 | return status; | |
5653 | } | |
b1f69b75 AA |
5654 | |
5655 | static void | |
5656 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5657 | { | |
5658 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5659 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5660 | |
5661 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5662 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5663 | * right now covering the LAYOUTGET we are about to send. | |
5664 | * However, that is not so catastrophic, and there seems | |
5665 | * to be no way to prevent it completely. | |
5666 | */ | |
b1f69b75 AA |
5667 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
5668 | &lgp->res.seq_res, 0, task)) | |
5669 | return; | |
cf7d63f1 FI |
5670 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5671 | NFS_I(lgp->args.inode)->layout, | |
5672 | lgp->args.ctx->state)) { | |
5673 | rpc_exit(task, NFS4_OK); | |
5674 | return; | |
5675 | } | |
b1f69b75 AA |
5676 | rpc_call_start(task); |
5677 | } | |
5678 | ||
5679 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5680 | { | |
5681 | struct nfs4_layoutget *lgp = calldata; | |
5682 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5683 | ||
5684 | dprintk("--> %s\n", __func__); | |
5685 | ||
5686 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5687 | return; | |
5688 | ||
5689 | switch (task->tk_status) { | |
5690 | case 0: | |
5691 | break; | |
5692 | case -NFS4ERR_LAYOUTTRYLATER: | |
5693 | case -NFS4ERR_RECALLCONFLICT: | |
5694 | task->tk_status = -NFS4ERR_DELAY; | |
5695 | /* Fall through */ | |
5696 | default: | |
5697 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5698 | rpc_restart_call_prepare(task); | |
5699 | return; | |
5700 | } | |
5701 | } | |
b1f69b75 AA |
5702 | dprintk("<-- %s\n", __func__); |
5703 | } | |
5704 | ||
5705 | static void nfs4_layoutget_release(void *calldata) | |
5706 | { | |
5707 | struct nfs4_layoutget *lgp = calldata; | |
5708 | ||
5709 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5710 | put_nfs_open_context(lgp->args.ctx); |
5711 | kfree(calldata); | |
5712 | dprintk("<-- %s\n", __func__); | |
5713 | } | |
5714 | ||
5715 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5716 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5717 | .rpc_call_done = nfs4_layoutget_done, | |
5718 | .rpc_release = nfs4_layoutget_release, | |
5719 | }; | |
5720 | ||
5721 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5722 | { | |
5723 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5724 | struct rpc_task *task; | |
5725 | struct rpc_message msg = { | |
5726 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5727 | .rpc_argp = &lgp->args, | |
5728 | .rpc_resp = &lgp->res, | |
5729 | }; | |
5730 | struct rpc_task_setup task_setup_data = { | |
5731 | .rpc_client = server->client, | |
5732 | .rpc_message = &msg, | |
5733 | .callback_ops = &nfs4_layoutget_call_ops, | |
5734 | .callback_data = lgp, | |
5735 | .flags = RPC_TASK_ASYNC, | |
5736 | }; | |
5737 | int status = 0; | |
5738 | ||
5739 | dprintk("--> %s\n", __func__); | |
5740 | ||
35124a09 | 5741 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 AA |
5742 | lgp->res.seq_res.sr_slot = NULL; |
5743 | task = rpc_run_task(&task_setup_data); | |
5744 | if (IS_ERR(task)) | |
5745 | return PTR_ERR(task); | |
5746 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5747 | if (status == 0) |
5748 | status = task->tk_status; | |
5749 | if (status == 0) | |
5750 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5751 | rpc_put_task(task); |
5752 | dprintk("<-- %s status=%d\n", __func__, status); | |
5753 | return status; | |
5754 | } | |
5755 | ||
cbe82603 BH |
5756 | static void |
5757 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
5758 | { | |
5759 | struct nfs4_layoutreturn *lrp = calldata; | |
5760 | ||
5761 | dprintk("--> %s\n", __func__); | |
5762 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
5763 | &lrp->res.seq_res, 0, task)) | |
5764 | return; | |
5765 | rpc_call_start(task); | |
5766 | } | |
5767 | ||
5768 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
5769 | { | |
5770 | struct nfs4_layoutreturn *lrp = calldata; | |
5771 | struct nfs_server *server; | |
a56aaa02 | 5772 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
5773 | |
5774 | dprintk("--> %s\n", __func__); | |
5775 | ||
5776 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
5777 | return; | |
5778 | ||
5779 | server = NFS_SERVER(lrp->args.inode); | |
5780 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5781 | nfs_restart_rpc(task, lrp->clp); | |
5782 | return; | |
5783 | } | |
a2e1d4f2 | 5784 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 5785 | if (task->tk_status == 0) { |
cbe82603 | 5786 | if (lrp->res.lrs_present) { |
cbe82603 | 5787 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
5788 | } else |
5789 | BUG_ON(!list_empty(&lo->plh_segs)); | |
5790 | } | |
a2e1d4f2 FI |
5791 | lo->plh_block_lgets--; |
5792 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
5793 | dprintk("<-- %s\n", __func__); |
5794 | } | |
5795 | ||
5796 | static void nfs4_layoutreturn_release(void *calldata) | |
5797 | { | |
5798 | struct nfs4_layoutreturn *lrp = calldata; | |
5799 | ||
5800 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 5801 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
5802 | kfree(calldata); |
5803 | dprintk("<-- %s\n", __func__); | |
5804 | } | |
5805 | ||
5806 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
5807 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
5808 | .rpc_call_done = nfs4_layoutreturn_done, | |
5809 | .rpc_release = nfs4_layoutreturn_release, | |
5810 | }; | |
5811 | ||
5812 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
5813 | { | |
5814 | struct rpc_task *task; | |
5815 | struct rpc_message msg = { | |
5816 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
5817 | .rpc_argp = &lrp->args, | |
5818 | .rpc_resp = &lrp->res, | |
5819 | }; | |
5820 | struct rpc_task_setup task_setup_data = { | |
5821 | .rpc_client = lrp->clp->cl_rpcclient, | |
5822 | .rpc_message = &msg, | |
5823 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
5824 | .callback_data = lrp, | |
5825 | }; | |
5826 | int status; | |
5827 | ||
5828 | dprintk("--> %s\n", __func__); | |
5829 | task = rpc_run_task(&task_setup_data); | |
5830 | if (IS_ERR(task)) | |
5831 | return PTR_ERR(task); | |
5832 | status = task->tk_status; | |
5833 | dprintk("<-- %s status=%d\n", __func__, status); | |
5834 | rpc_put_task(task); | |
5835 | return status; | |
5836 | } | |
5837 | ||
7f11d8d3 AA |
5838 | /* |
5839 | * Retrieve the list of Data Server devices from the MDS. | |
5840 | */ | |
5841 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
5842 | const struct nfs_fh *fh, | |
5843 | struct pnfs_devicelist *devlist) | |
5844 | { | |
5845 | struct nfs4_getdevicelist_args args = { | |
5846 | .fh = fh, | |
5847 | .layoutclass = server->pnfs_curr_ld->id, | |
5848 | }; | |
5849 | struct nfs4_getdevicelist_res res = { | |
5850 | .devlist = devlist, | |
5851 | }; | |
5852 | struct rpc_message msg = { | |
5853 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
5854 | .rpc_argp = &args, | |
5855 | .rpc_resp = &res, | |
5856 | }; | |
5857 | int status; | |
5858 | ||
5859 | dprintk("--> %s\n", __func__); | |
5860 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
5861 | &res.seq_res, 0); | |
5862 | dprintk("<-- %s status=%d\n", __func__, status); | |
5863 | return status; | |
5864 | } | |
5865 | ||
5866 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
5867 | const struct nfs_fh *fh, | |
5868 | struct pnfs_devicelist *devlist) | |
5869 | { | |
5870 | struct nfs4_exception exception = { }; | |
5871 | int err; | |
5872 | ||
5873 | do { | |
5874 | err = nfs4_handle_exception(server, | |
5875 | _nfs4_getdevicelist(server, fh, devlist), | |
5876 | &exception); | |
5877 | } while (exception.retry); | |
5878 | ||
5879 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
5880 | err, devlist->num_devs); | |
5881 | ||
5882 | return err; | |
5883 | } | |
5884 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
5885 | ||
b1f69b75 AA |
5886 | static int |
5887 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5888 | { | |
5889 | struct nfs4_getdeviceinfo_args args = { | |
5890 | .pdev = pdev, | |
5891 | }; | |
5892 | struct nfs4_getdeviceinfo_res res = { | |
5893 | .pdev = pdev, | |
5894 | }; | |
5895 | struct rpc_message msg = { | |
5896 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5897 | .rpc_argp = &args, | |
5898 | .rpc_resp = &res, | |
5899 | }; | |
5900 | int status; | |
5901 | ||
5902 | dprintk("--> %s\n", __func__); | |
7c513058 | 5903 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
5904 | dprintk("<-- %s status=%d\n", __func__, status); |
5905 | ||
5906 | return status; | |
5907 | } | |
5908 | ||
5909 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5910 | { | |
5911 | struct nfs4_exception exception = { }; | |
5912 | int err; | |
5913 | ||
5914 | do { | |
5915 | err = nfs4_handle_exception(server, | |
5916 | _nfs4_proc_getdeviceinfo(server, pdev), | |
5917 | &exception); | |
5918 | } while (exception.retry); | |
5919 | return err; | |
5920 | } | |
5921 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
5922 | ||
863a3c6c AA |
5923 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
5924 | { | |
5925 | struct nfs4_layoutcommit_data *data = calldata; | |
5926 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
5927 | ||
5928 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
5929 | &data->res.seq_res, 1, task)) | |
5930 | return; | |
5931 | rpc_call_start(task); | |
5932 | } | |
5933 | ||
5934 | static void | |
5935 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
5936 | { | |
5937 | struct nfs4_layoutcommit_data *data = calldata; | |
5938 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
5939 | ||
5940 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
5941 | return; | |
5942 | ||
5943 | switch (task->tk_status) { /* Just ignore these failures */ | |
5944 | case NFS4ERR_DELEG_REVOKED: /* layout was recalled */ | |
5945 | case NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
5946 | case NFS4ERR_BADLAYOUT: /* no layout */ | |
5947 | case NFS4ERR_GRACE: /* loca_recalim always false */ | |
5948 | task->tk_status = 0; | |
5949 | } | |
5950 | ||
5951 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5952 | nfs_restart_rpc(task, server->nfs_client); | |
5953 | return; | |
5954 | } | |
5955 | ||
5956 | if (task->tk_status == 0) | |
5957 | nfs_post_op_update_inode_force_wcc(data->args.inode, | |
5958 | data->res.fattr); | |
5959 | } | |
5960 | ||
5961 | static void nfs4_layoutcommit_release(void *calldata) | |
5962 | { | |
5963 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 5964 | struct pnfs_layout_segment *lseg, *tmp; |
863a3c6c | 5965 | |
db29c089 | 5966 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 5967 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
5968 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
5969 | list_del_init(&lseg->pls_lc_list); | |
5970 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
5971 | &lseg->pls_flags)) | |
5972 | put_lseg(lseg); | |
5973 | } | |
863a3c6c AA |
5974 | put_rpccred(data->cred); |
5975 | kfree(data); | |
5976 | } | |
5977 | ||
5978 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
5979 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
5980 | .rpc_call_done = nfs4_layoutcommit_done, | |
5981 | .rpc_release = nfs4_layoutcommit_release, | |
5982 | }; | |
5983 | ||
5984 | int | |
ef311537 | 5985 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
5986 | { |
5987 | struct rpc_message msg = { | |
5988 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
5989 | .rpc_argp = &data->args, | |
5990 | .rpc_resp = &data->res, | |
5991 | .rpc_cred = data->cred, | |
5992 | }; | |
5993 | struct rpc_task_setup task_setup_data = { | |
5994 | .task = &data->task, | |
5995 | .rpc_client = NFS_CLIENT(data->args.inode), | |
5996 | .rpc_message = &msg, | |
5997 | .callback_ops = &nfs4_layoutcommit_ops, | |
5998 | .callback_data = data, | |
5999 | .flags = RPC_TASK_ASYNC, | |
6000 | }; | |
6001 | struct rpc_task *task; | |
6002 | int status = 0; | |
6003 | ||
6004 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6005 | "lbw: %llu inode %lu\n", | |
6006 | data->task.tk_pid, sync, | |
6007 | data->args.lastbytewritten, | |
6008 | data->args.inode->i_ino); | |
6009 | ||
6010 | task = rpc_run_task(&task_setup_data); | |
6011 | if (IS_ERR(task)) | |
6012 | return PTR_ERR(task); | |
ef311537 | 6013 | if (sync == false) |
863a3c6c AA |
6014 | goto out; |
6015 | status = nfs4_wait_for_completion_rpc_task(task); | |
6016 | if (status != 0) | |
6017 | goto out; | |
6018 | status = task->tk_status; | |
6019 | out: | |
6020 | dprintk("%s: status %d\n", __func__, status); | |
6021 | rpc_put_task(task); | |
6022 | return status; | |
6023 | } | |
fca78d6d BS |
6024 | |
6025 | static int | |
6026 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6027 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6028 | { | |
6029 | struct nfs41_secinfo_no_name_args args = { | |
6030 | .style = SECINFO_STYLE_CURRENT_FH, | |
6031 | }; | |
6032 | struct nfs4_secinfo_res res = { | |
6033 | .flavors = flavors, | |
6034 | }; | |
6035 | struct rpc_message msg = { | |
6036 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6037 | .rpc_argp = &args, | |
6038 | .rpc_resp = &res, | |
6039 | }; | |
6040 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6041 | } | |
6042 | ||
6043 | static int | |
6044 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6045 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6046 | { | |
6047 | struct nfs4_exception exception = { }; | |
6048 | int err; | |
6049 | do { | |
6050 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6051 | switch (err) { | |
6052 | case 0: | |
6053 | case -NFS4ERR_WRONGSEC: | |
6054 | case -NFS4ERR_NOTSUPP: | |
6055 | break; | |
6056 | default: | |
6057 | err = nfs4_handle_exception(server, err, &exception); | |
6058 | } | |
6059 | } while (exception.retry); | |
6060 | return err; | |
6061 | } | |
6062 | ||
6063 | static int | |
6064 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6065 | struct nfs_fsinfo *info) | |
6066 | { | |
6067 | int err; | |
6068 | struct page *page; | |
6069 | rpc_authflavor_t flavor; | |
6070 | struct nfs4_secinfo_flavors *flavors; | |
6071 | ||
6072 | page = alloc_page(GFP_KERNEL); | |
6073 | if (!page) { | |
6074 | err = -ENOMEM; | |
6075 | goto out; | |
6076 | } | |
6077 | ||
6078 | flavors = page_address(page); | |
6079 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6080 | ||
6081 | /* | |
6082 | * Fall back on "guess and check" method if | |
6083 | * the server doesn't support SECINFO_NO_NAME | |
6084 | */ | |
6085 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6086 | err = nfs4_find_root_sec(server, fhandle, info); | |
6087 | goto out_freepage; | |
6088 | } | |
6089 | if (err) | |
6090 | goto out_freepage; | |
6091 | ||
6092 | flavor = nfs_find_best_sec(flavors); | |
6093 | if (err == 0) | |
6094 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6095 | ||
6096 | out_freepage: | |
6097 | put_page(page); | |
6098 | if (err == -EACCES) | |
6099 | return -EPERM; | |
6100 | out: | |
6101 | return err; | |
6102 | } | |
7d974794 BS |
6103 | static int _nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) |
6104 | { | |
6105 | int status; | |
6106 | struct nfs41_test_stateid_args args = { | |
6107 | .stateid = &state->stateid, | |
6108 | }; | |
6109 | struct nfs41_test_stateid_res res; | |
6110 | struct rpc_message msg = { | |
6111 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6112 | .rpc_argp = &args, | |
6113 | .rpc_resp = &res, | |
6114 | }; | |
6115 | args.seq_args.sa_session = res.seq_res.sr_session = NULL; | |
6116 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); | |
6117 | return status; | |
6118 | } | |
6119 | ||
6120 | static int nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6121 | { | |
6122 | struct nfs4_exception exception = { }; | |
6123 | int err; | |
6124 | do { | |
6125 | err = nfs4_handle_exception(server, | |
6126 | _nfs41_test_stateid(server, state), | |
6127 | &exception); | |
6128 | } while (exception.retry); | |
6129 | return err; | |
6130 | } | |
9aeda35f BS |
6131 | |
6132 | static int _nfs4_free_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6133 | { | |
6134 | int status; | |
6135 | struct nfs41_free_stateid_args args = { | |
6136 | .stateid = &state->stateid, | |
6137 | }; | |
6138 | struct nfs41_free_stateid_res res; | |
6139 | struct rpc_message msg = { | |
6140 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6141 | .rpc_argp = &args, | |
6142 | .rpc_resp = &res, | |
6143 | }; | |
6144 | ||
6145 | args.seq_args.sa_session = res.seq_res.sr_session = NULL; | |
6146 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); | |
6147 | return status; | |
6148 | } | |
6149 | ||
6150 | static int nfs41_free_stateid(struct nfs_server *server, struct nfs4_state *state) | |
6151 | { | |
6152 | struct nfs4_exception exception = { }; | |
6153 | int err; | |
6154 | do { | |
6155 | err = nfs4_handle_exception(server, | |
6156 | _nfs4_free_stateid(server, state), | |
6157 | &exception); | |
6158 | } while (exception.retry); | |
6159 | return err; | |
6160 | } | |
557134a3 AA |
6161 | #endif /* CONFIG_NFS_V4_1 */ |
6162 | ||
591d71cb | 6163 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6164 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6165 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6166 | .recover_open = nfs4_open_reclaim, |
6167 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6168 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6169 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6170 | }; |
6171 | ||
591d71cb AA |
6172 | #if defined(CONFIG_NFS_V4_1) |
6173 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
6174 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
6175 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6176 | .recover_open = nfs4_open_reclaim, | |
6177 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6178 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6179 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6180 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6181 | }; |
6182 | #endif /* CONFIG_NFS_V4_1 */ | |
6183 | ||
6184 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
6185 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
6186 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6187 | .recover_open = nfs4_open_expired, | |
6188 | .recover_lock = nfs4_lock_expired, | |
6189 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6190 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6191 | }; |
6192 | ||
6193 | #if defined(CONFIG_NFS_V4_1) | |
6194 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 6195 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6196 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6197 | .recover_open = nfs41_open_expired, |
6198 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6199 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6200 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6201 | }; |
591d71cb | 6202 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6203 | |
29fba38b BH |
6204 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
6205 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 6206 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6207 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6208 | }; |
6209 | ||
6210 | #if defined(CONFIG_NFS_V4_1) | |
6211 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
6212 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 6213 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6214 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6215 | }; |
6216 | #endif | |
6217 | ||
97dc1359 TM |
6218 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6219 | .minor_version = 0, | |
6220 | .call_sync = _nfs4_call_sync, | |
e047a10c | 6221 | .validate_stateid = nfs4_validate_delegation_stateid, |
fca78d6d | 6222 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6223 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6224 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6225 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6226 | }; |
6227 | ||
6228 | #if defined(CONFIG_NFS_V4_1) | |
6229 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6230 | .minor_version = 1, | |
6231 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 6232 | .validate_stateid = nfs41_validate_delegation_stateid, |
fca78d6d | 6233 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6234 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6235 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6236 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6237 | }; |
6238 | #endif | |
6239 | ||
97dc1359 TM |
6240 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6241 | [0] = &nfs_v4_0_minor_ops, | |
6242 | #if defined(CONFIG_NFS_V4_1) | |
6243 | [1] = &nfs_v4_1_minor_ops, | |
6244 | #endif | |
6245 | }; | |
6246 | ||
92e1d5be | 6247 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6248 | .permission = nfs_permission, |
6249 | .getattr = nfs_getattr, | |
6250 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6251 | .getxattr = generic_getxattr, |
6252 | .setxattr = generic_setxattr, | |
6253 | .listxattr = generic_listxattr, | |
6254 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6255 | }; |
6256 | ||
509de811 | 6257 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6258 | .version = 4, /* protocol version */ |
6259 | .dentry_ops = &nfs4_dentry_operations, | |
6260 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6261 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
6262 | .getroot = nfs4_proc_get_root, |
6263 | .getattr = nfs4_proc_getattr, | |
6264 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 6265 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
6266 | .lookup = nfs4_proc_lookup, |
6267 | .access = nfs4_proc_access, | |
6268 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6269 | .create = nfs4_proc_create, |
6270 | .remove = nfs4_proc_remove, | |
6271 | .unlink_setup = nfs4_proc_unlink_setup, | |
6272 | .unlink_done = nfs4_proc_unlink_done, | |
6273 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
6274 | .rename_setup = nfs4_proc_rename_setup, |
6275 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
6276 | .link = nfs4_proc_link, |
6277 | .symlink = nfs4_proc_symlink, | |
6278 | .mkdir = nfs4_proc_mkdir, | |
6279 | .rmdir = nfs4_proc_remove, | |
6280 | .readdir = nfs4_proc_readdir, | |
6281 | .mknod = nfs4_proc_mknod, | |
6282 | .statfs = nfs4_proc_statfs, | |
6283 | .fsinfo = nfs4_proc_fsinfo, | |
6284 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6285 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6286 | .decode_dirent = nfs4_decode_dirent, |
6287 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 6288 | .read_done = nfs4_read_done, |
1da177e4 | 6289 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 6290 | .write_done = nfs4_write_done, |
1da177e4 | 6291 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 6292 | .commit_done = nfs4_commit_done, |
1da177e4 | 6293 | .lock = nfs4_proc_lock, |
e50a1c2e | 6294 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6295 | .close_context = nfs4_close_context, |
2b484297 | 6296 | .open_context = nfs4_atomic_open, |
45a52a02 | 6297 | .init_client = nfs4_init_client, |
5a5ea0d4 | 6298 | .secinfo = nfs4_proc_secinfo, |
1da177e4 LT |
6299 | }; |
6300 | ||
64c2ce8b AK |
6301 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6302 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6303 | .list = nfs4_xattr_list_nfs4_acl, | |
6304 | .get = nfs4_xattr_get_nfs4_acl, | |
6305 | .set = nfs4_xattr_set_nfs4_acl, | |
6306 | }; | |
6307 | ||
6308 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6309 | &nfs4_xattr_nfs4_acl_handler, | |
6310 | NULL | |
6311 | }; | |
6312 | ||
1da177e4 LT |
6313 | /* |
6314 | * Local variables: | |
6315 | * c-basic-offset: 8 | |
6316 | * End: | |
6317 | */ |