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