Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
5a0e3ad6 | 42 | #include <linux/slab.h> |
1da177e4 LT |
43 | #include <linux/sunrpc/clnt.h> |
44 | #include <linux/nfs.h> | |
45 | #include <linux/nfs4.h> | |
46 | #include <linux/nfs_fs.h> | |
47 | #include <linux/nfs_page.h> | |
1da177e4 | 48 | #include <linux/namei.h> |
02a913a7 | 49 | #include <linux/mount.h> |
99fe60d0 | 50 | #include <linux/module.h> |
5a0ffe54 | 51 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 52 | #include <linux/xattr.h> |
c7a360b0 | 53 | #include <linux/utsname.h> |
1da177e4 | 54 | |
4ce79717 | 55 | #include "nfs4_fs.h" |
1da177e4 | 56 | #include "delegation.h" |
101070ca | 57 | #include "internal.h" |
006ea73e | 58 | #include "iostat.h" |
fc931582 | 59 | #include "callback.h" |
b1f69b75 | 60 | #include "pnfs.h" |
1da177e4 LT |
61 | |
62 | #define NFSDBG_FACILITY NFSDBG_PROC | |
63 | ||
2066fe89 | 64 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
65 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
66 | ||
a78cb57a TM |
67 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
68 | ||
cdd4e68b | 69 | struct nfs4_opendata; |
864472e9 | 70 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 71 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 72 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 73 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
9936781d TM |
74 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
75 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
0ab64e0e TM |
76 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
77 | struct nfs_fattr *fattr, struct iattr *sattr, | |
78 | struct nfs4_state *state); | |
1da177e4 | 79 | |
1da177e4 | 80 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 81 | static int nfs4_map_errors(int err) |
1da177e4 | 82 | { |
52567b03 TM |
83 | if (err >= -1000) |
84 | return err; | |
85 | switch (err) { | |
86 | case -NFS4ERR_RESOURCE: | |
87 | return -EREMOTEIO; | |
88 | default: | |
1da177e4 | 89 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 90 | __func__, -err); |
52567b03 | 91 | break; |
1da177e4 | 92 | } |
52567b03 | 93 | return -EIO; |
1da177e4 LT |
94 | } |
95 | ||
96 | /* | |
97 | * This is our standard bitmap for GETATTR requests. | |
98 | */ | |
99 | const u32 nfs4_fattr_bitmap[2] = { | |
100 | FATTR4_WORD0_TYPE | |
101 | | FATTR4_WORD0_CHANGE | |
102 | | FATTR4_WORD0_SIZE | |
103 | | FATTR4_WORD0_FSID | |
104 | | FATTR4_WORD0_FILEID, | |
105 | FATTR4_WORD1_MODE | |
106 | | FATTR4_WORD1_NUMLINKS | |
107 | | FATTR4_WORD1_OWNER | |
108 | | FATTR4_WORD1_OWNER_GROUP | |
109 | | FATTR4_WORD1_RAWDEV | |
110 | | FATTR4_WORD1_SPACE_USED | |
111 | | FATTR4_WORD1_TIME_ACCESS | |
112 | | FATTR4_WORD1_TIME_METADATA | |
113 | | FATTR4_WORD1_TIME_MODIFY | |
114 | }; | |
115 | ||
116 | const u32 nfs4_statfs_bitmap[2] = { | |
117 | FATTR4_WORD0_FILES_AVAIL | |
118 | | FATTR4_WORD0_FILES_FREE | |
119 | | FATTR4_WORD0_FILES_TOTAL, | |
120 | FATTR4_WORD1_SPACE_AVAIL | |
121 | | FATTR4_WORD1_SPACE_FREE | |
122 | | FATTR4_WORD1_SPACE_TOTAL | |
123 | }; | |
124 | ||
4ce79717 | 125 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
126 | FATTR4_WORD0_MAXLINK |
127 | | FATTR4_WORD0_MAXNAME, | |
128 | 0 | |
129 | }; | |
130 | ||
131 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
132 | | FATTR4_WORD0_MAXREAD | |
133 | | FATTR4_WORD0_MAXWRITE | |
134 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 135 | FATTR4_WORD1_TIME_DELTA |
504913fb | 136 | | FATTR4_WORD1_FS_LAYOUT_TYPES |
1da177e4 LT |
137 | }; |
138 | ||
830b8e33 MN |
139 | const u32 nfs4_fs_locations_bitmap[2] = { |
140 | FATTR4_WORD0_TYPE | |
141 | | FATTR4_WORD0_CHANGE | |
142 | | FATTR4_WORD0_SIZE | |
143 | | FATTR4_WORD0_FSID | |
144 | | FATTR4_WORD0_FILEID | |
145 | | FATTR4_WORD0_FS_LOCATIONS, | |
146 | FATTR4_WORD1_MODE | |
147 | | FATTR4_WORD1_NUMLINKS | |
148 | | FATTR4_WORD1_OWNER | |
149 | | FATTR4_WORD1_OWNER_GROUP | |
150 | | FATTR4_WORD1_RAWDEV | |
151 | | FATTR4_WORD1_SPACE_USED | |
152 | | FATTR4_WORD1_TIME_ACCESS | |
153 | | FATTR4_WORD1_TIME_METADATA | |
154 | | FATTR4_WORD1_TIME_MODIFY | |
155 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
156 | }; | |
157 | ||
bc4785cd | 158 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
159 | struct nfs4_readdir_arg *readdir) |
160 | { | |
0dbb4c67 | 161 | __be32 *start, *p; |
1da177e4 LT |
162 | |
163 | BUG_ON(readdir->count < 80); | |
164 | if (cookie > 2) { | |
b7ef1956 | 165 | readdir->cookie = cookie; |
1da177e4 LT |
166 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
167 | return; | |
168 | } | |
169 | ||
170 | readdir->cookie = 0; | |
171 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
172 | if (cookie == 2) | |
173 | return; | |
174 | ||
175 | /* | |
176 | * NFSv4 servers do not return entries for '.' and '..' | |
177 | * Therefore, we fake these entries here. We let '.' | |
178 | * have cookie 0 and '..' have cookie 1. Note that | |
179 | * when talking to the server, we always send cookie 0 | |
180 | * instead of 1 or 2. | |
181 | */ | |
0dbb4c67 | 182 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
183 | |
184 | if (cookie == 0) { | |
185 | *p++ = xdr_one; /* next */ | |
186 | *p++ = xdr_zero; /* cookie, first word */ | |
187 | *p++ = xdr_one; /* cookie, second word */ | |
188 | *p++ = xdr_one; /* entry len */ | |
189 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
190 | p++; | |
191 | *p++ = xdr_one; /* bitmap length */ | |
192 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
193 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 194 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
195 | } |
196 | ||
197 | *p++ = xdr_one; /* next */ | |
198 | *p++ = xdr_zero; /* cookie, first word */ | |
199 | *p++ = xdr_two; /* cookie, second word */ | |
200 | *p++ = xdr_two; /* entry len */ | |
201 | memcpy(p, "..\0\0", 4); /* entry */ | |
202 | p++; | |
203 | *p++ = xdr_one; /* bitmap length */ | |
204 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
205 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 206 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
207 | |
208 | readdir->pgbase = (char *)p - (char *)start; | |
209 | readdir->count -= readdir->pgbase; | |
210 | kunmap_atomic(start, KM_USER0); | |
211 | } | |
212 | ||
65de872e TM |
213 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
214 | { | |
215 | int res; | |
216 | ||
217 | might_sleep(); | |
218 | ||
e005e804 | 219 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 220 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
221 | return res; |
222 | } | |
223 | ||
224 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
225 | { | |
226 | int res = 0; | |
227 | ||
228 | might_sleep(); | |
229 | ||
230 | if (*timeout <= 0) | |
231 | *timeout = NFS4_POLL_RETRY_MIN; | |
232 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
233 | *timeout = NFS4_POLL_RETRY_MAX; | |
234 | schedule_timeout_killable(*timeout); | |
235 | if (fatal_signal_pending(current)) | |
236 | res = -ERESTARTSYS; | |
237 | *timeout <<= 1; | |
238 | return res; | |
239 | } | |
240 | ||
241 | /* This is the error handling routine for processes that are allowed | |
242 | * to sleep. | |
243 | */ | |
244 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
245 | { | |
246 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 247 | struct nfs4_state *state = exception->state; |
65de872e TM |
248 | int ret = errorcode; |
249 | ||
250 | exception->retry = 0; | |
251 | switch(errorcode) { | |
252 | case 0: | |
253 | return 0; | |
9e33bed5 TM |
254 | case -NFS4ERR_ADMIN_REVOKED: |
255 | case -NFS4ERR_BAD_STATEID: | |
256 | case -NFS4ERR_OPENMODE: | |
257 | if (state == NULL) | |
258 | break; | |
0400a6b0 TM |
259 | nfs4_schedule_stateid_recovery(server, state); |
260 | goto wait_on_recovery; | |
65de872e | 261 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 262 | case -NFS4ERR_STALE_CLIENTID: |
65de872e | 263 | case -NFS4ERR_EXPIRED: |
0400a6b0 TM |
264 | nfs4_schedule_lease_recovery(clp); |
265 | goto wait_on_recovery; | |
03391693 | 266 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
267 | case -NFS4ERR_BADSESSION: |
268 | case -NFS4ERR_BADSLOT: | |
269 | case -NFS4ERR_BAD_HIGH_SLOT: | |
270 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
271 | case -NFS4ERR_DEADSESSION: | |
272 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
273 | case -NFS4ERR_SEQ_MISORDERED: | |
274 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
275 | errorcode); | |
0400a6b0 | 276 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 | 277 | exception->retry = 1; |
b9179237 | 278 | break; |
03391693 | 279 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 280 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
281 | if (exception->timeout > HZ) { |
282 | /* We have retried a decent amount, time to | |
283 | * fail | |
284 | */ | |
285 | ret = -EBUSY; | |
286 | break; | |
287 | } | |
65de872e TM |
288 | case -NFS4ERR_GRACE: |
289 | case -NFS4ERR_DELAY: | |
2c643488 | 290 | case -EKEYEXPIRED: |
65de872e TM |
291 | ret = nfs4_delay(server->client, &exception->timeout); |
292 | if (ret != 0) | |
293 | break; | |
294 | case -NFS4ERR_OLD_STATEID: | |
295 | exception->retry = 1; | |
296 | } | |
297 | /* We failed to handle the error */ | |
298 | return nfs4_map_errors(ret); | |
0400a6b0 | 299 | wait_on_recovery: |
a2c0b9e2 TM |
300 | ret = nfs4_wait_clnt_recover(clp); |
301 | if (ret == 0) | |
302 | exception->retry = 1; | |
303 | return ret; | |
65de872e TM |
304 | } |
305 | ||
306 | ||
452e9352 | 307 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 308 | { |
1da177e4 LT |
309 | spin_lock(&clp->cl_lock); |
310 | if (time_before(clp->cl_last_renewal,timestamp)) | |
311 | clp->cl_last_renewal = timestamp; | |
312 | spin_unlock(&clp->cl_lock); | |
313 | } | |
314 | ||
452e9352 TM |
315 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
316 | { | |
317 | do_renew_lease(server->nfs_client, timestamp); | |
318 | } | |
319 | ||
cccef3b9 AA |
320 | #if defined(CONFIG_NFS_V4_1) |
321 | ||
e2c4ab3c AA |
322 | /* |
323 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
324 | * | |
325 | * freeing a slot is trivially done by clearing its respective bit | |
326 | * in the bitmap. | |
327 | * If the freed slotid equals highest_used_slotid we want to update it | |
328 | * so that the server would be able to size down the slot table if needed, | |
329 | * otherwise we know that the highest_used_slotid is still in use. | |
330 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
331 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
332 | * highest slotid in use. | |
333 | * If none found, highest_used_slotid is set to -1. | |
35dc1d74 TM |
334 | * |
335 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
336 | */ |
337 | static void | |
dfb4f309 | 338 | nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot) |
e2c4ab3c | 339 | { |
dfb4f309 | 340 | int free_slotid = free_slot - tbl->slots; |
e2c4ab3c AA |
341 | int slotid = free_slotid; |
342 | ||
dfb4f309 | 343 | BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
344 | /* clear used bit in bitmap */ |
345 | __clear_bit(slotid, tbl->used_slots); | |
346 | ||
347 | /* update highest_used_slotid when it is freed */ | |
348 | if (slotid == tbl->highest_used_slotid) { | |
349 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 350 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
351 | tbl->highest_used_slotid = slotid; |
352 | else | |
353 | tbl->highest_used_slotid = -1; | |
354 | } | |
e2c4ab3c AA |
355 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, |
356 | free_slotid, tbl->highest_used_slotid); | |
357 | } | |
358 | ||
3bfb0fc5 | 359 | /* |
42acd021 | 360 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 361 | */ |
42acd021 | 362 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 363 | { |
689cf5c1 AB |
364 | struct rpc_task *task; |
365 | ||
a2118c33 | 366 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
689cf5c1 AB |
367 | task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq); |
368 | if (task) | |
369 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
3bfb0fc5 AB |
370 | return; |
371 | } | |
372 | ||
373 | if (ses->fc_slot_table.highest_used_slotid != -1) | |
374 | return; | |
375 | ||
42acd021 AA |
376 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
377 | complete(&ses->fc_slot_table.complete); | |
378 | } | |
379 | ||
380 | /* | |
381 | * Signal state manager thread if session back channel is drained | |
382 | */ | |
383 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
384 | { | |
385 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
386 | ses->bc_slot_table.highest_used_slotid != -1) | |
387 | return; | |
388 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
389 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
390 | } |
391 | ||
d185a334 | 392 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
393 | { |
394 | struct nfs4_slot_table *tbl; | |
395 | ||
d185a334 | 396 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 397 | if (!res->sr_slot) { |
13615871 AA |
398 | /* just wake up the next guy waiting since |
399 | * we may have not consumed a slot after all */ | |
691daf3b | 400 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 401 | return; |
13615871 | 402 | } |
ea028ac9 | 403 | |
35dc1d74 | 404 | spin_lock(&tbl->slot_tbl_lock); |
dfb4f309 | 405 | nfs4_free_slot(tbl, res->sr_slot); |
42acd021 | 406 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 407 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 408 | res->sr_slot = NULL; |
13615871 AA |
409 | } |
410 | ||
14516c3a | 411 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
412 | { |
413 | unsigned long timestamp; | |
14516c3a | 414 | struct nfs_client *clp; |
b0df806c AA |
415 | |
416 | /* | |
417 | * sr_status remains 1 if an RPC level error occurred. The server | |
418 | * may or may not have processed the sequence operation.. | |
419 | * Proceed as if the server received and processed the sequence | |
420 | * operation. | |
421 | */ | |
422 | if (res->sr_status == 1) | |
423 | res->sr_status = NFS_OK; | |
424 | ||
425 | /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */ | |
dfb4f309 | 426 | if (!res->sr_slot) |
b0df806c AA |
427 | goto out; |
428 | ||
691daf3b | 429 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
430 | switch (res->sr_status) { |
431 | case 0: | |
b0df806c | 432 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 433 | ++res->sr_slot->seq_nr; |
b0df806c | 434 | timestamp = res->sr_renewal_time; |
14516c3a | 435 | clp = res->sr_session->clp; |
452e9352 | 436 | do_renew_lease(clp, timestamp); |
0629e370 | 437 | /* Check sequence flags */ |
b4410c2f TM |
438 | if (res->sr_status_flags != 0) |
439 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
440 | break; |
441 | case -NFS4ERR_DELAY: | |
442 | /* The server detected a resend of the RPC call and | |
443 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
444 | * of RFC5661. | |
445 | */ | |
12364a4f | 446 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
447 | __func__, |
448 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
449 | res->sr_slot->seq_nr); | |
14516c3a TM |
450 | goto out_retry; |
451 | default: | |
452 | /* Just update the slot sequence no. */ | |
dfb4f309 | 453 | ++res->sr_slot->seq_nr; |
b0df806c AA |
454 | } |
455 | out: | |
456 | /* The session may be reset by one of the error handlers. */ | |
457 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 458 | nfs41_sequence_free_slot(res); |
14516c3a TM |
459 | return 1; |
460 | out_retry: | |
d05dd4e9 | 461 | if (!rpc_restart_call(task)) |
14516c3a TM |
462 | goto out; |
463 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
464 | return 0; | |
b0df806c AA |
465 | } |
466 | ||
14516c3a TM |
467 | static int nfs4_sequence_done(struct rpc_task *task, |
468 | struct nfs4_sequence_res *res) | |
df896455 | 469 | { |
14516c3a TM |
470 | if (res->sr_session == NULL) |
471 | return 1; | |
472 | return nfs41_sequence_done(task, res); | |
df896455 TM |
473 | } |
474 | ||
510b8175 BH |
475 | /* |
476 | * nfs4_find_slot - efficiently look for a free slot | |
477 | * | |
478 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
479 | * If found, we mark the slot as used, update the highest_used_slotid, | |
480 | * and respectively set up the sequence operation args. | |
481 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
482 | * |
483 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
484 | */ |
485 | static u8 | |
40ead580 | 486 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 BH |
487 | { |
488 | int slotid; | |
489 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
490 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
491 | ||
510b8175 BH |
492 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
493 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
494 | tbl->max_slots); | |
495 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
496 | if (slotid >= tbl->max_slots) | |
497 | goto out; | |
498 | __set_bit(slotid, tbl->used_slots); | |
499 | if (slotid > tbl->highest_used_slotid) | |
500 | tbl->highest_used_slotid = slotid; | |
501 | ret_id = slotid; | |
502 | out: | |
503 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
504 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
505 | return ret_id; |
506 | } | |
507 | ||
dc70d7b3 | 508 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
509 | struct nfs4_sequence_args *args, |
510 | struct nfs4_sequence_res *res, | |
511 | int cache_reply, | |
512 | struct rpc_task *task) | |
513 | { | |
fbcd4abc AA |
514 | struct nfs4_slot *slot; |
515 | struct nfs4_slot_table *tbl; | |
516 | u8 slotid; | |
517 | ||
518 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 519 | /* slot already allocated? */ |
dfb4f309 | 520 | if (res->sr_slot != NULL) |
ce5039c1 AA |
521 | return 0; |
522 | ||
fbcd4abc AA |
523 | tbl = &session->fc_slot_table; |
524 | ||
525 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 526 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 527 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
ea028ac9 AA |
528 | /* |
529 | * The state manager will wait until the slot table is empty. | |
530 | * Schedule the reset thread | |
531 | */ | |
05f0d236 | 532 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 533 | spin_unlock(&tbl->slot_tbl_lock); |
bcb56164 | 534 | dprintk("%s Schedule Session Reset\n", __func__); |
05f0d236 | 535 | return -EAGAIN; |
b069d94a AA |
536 | } |
537 | ||
689cf5c1 AB |
538 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
539 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
540 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
541 | spin_unlock(&tbl->slot_tbl_lock); | |
542 | dprintk("%s enforce FIFO order\n", __func__); | |
543 | return -EAGAIN; | |
544 | } | |
545 | ||
40ead580 | 546 | slotid = nfs4_find_slot(tbl); |
fbcd4abc AA |
547 | if (slotid == NFS4_MAX_SLOT_TABLE) { |
548 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
549 | spin_unlock(&tbl->slot_tbl_lock); | |
550 | dprintk("<-- %s: no free slots\n", __func__); | |
551 | return -EAGAIN; | |
552 | } | |
553 | spin_unlock(&tbl->slot_tbl_lock); | |
554 | ||
689cf5c1 | 555 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 556 | slot = tbl->slots + slotid; |
99fe60d0 | 557 | args->sa_session = session; |
fbcd4abc AA |
558 | args->sa_slotid = slotid; |
559 | args->sa_cache_this = cache_reply; | |
560 | ||
561 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
562 | ||
99fe60d0 | 563 | res->sr_session = session; |
dfb4f309 | 564 | res->sr_slot = slot; |
fbcd4abc | 565 | res->sr_renewal_time = jiffies; |
2a6e26cd | 566 | res->sr_status_flags = 0; |
fbcd4abc AA |
567 | /* |
568 | * sr_status is only set in decode_sequence, and so will remain | |
569 | * set to 1 if an rpc level failure occurs. | |
570 | */ | |
571 | res->sr_status = 1; | |
ce5039c1 AA |
572 | return 0; |
573 | } | |
dc70d7b3 | 574 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 575 | |
035168ab | 576 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
577 | struct nfs4_sequence_args *args, |
578 | struct nfs4_sequence_res *res, | |
579 | int cache_reply, | |
580 | struct rpc_task *task) | |
581 | { | |
035168ab | 582 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
583 | int ret = 0; |
584 | ||
035168ab TM |
585 | if (session == NULL) { |
586 | args->sa_session = NULL; | |
587 | res->sr_session = NULL; | |
588 | goto out; | |
589 | } | |
590 | ||
12364a4f | 591 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
592 | __func__, session->clp, session, res->sr_slot ? |
593 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 594 | |
035168ab | 595 | ret = nfs41_setup_sequence(session, args, res, cache_reply, |
ce5039c1 | 596 | task); |
ce5039c1 AA |
597 | out: |
598 | dprintk("<-- %s status=%d\n", __func__, ret); | |
599 | return ret; | |
600 | } | |
601 | ||
602 | struct nfs41_call_sync_data { | |
035168ab | 603 | const struct nfs_server *seq_server; |
ce5039c1 AA |
604 | struct nfs4_sequence_args *seq_args; |
605 | struct nfs4_sequence_res *seq_res; | |
606 | int cache_reply; | |
607 | }; | |
608 | ||
609 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
610 | { | |
611 | struct nfs41_call_sync_data *data = calldata; | |
612 | ||
035168ab TM |
613 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
614 | ||
615 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
ce5039c1 AA |
616 | data->seq_res, data->cache_reply, task)) |
617 | return; | |
618 | rpc_call_start(task); | |
619 | } | |
620 | ||
b257957e AB |
621 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
622 | { | |
623 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
624 | nfs41_call_sync_prepare(task, calldata); | |
625 | } | |
626 | ||
69ab40c4 AA |
627 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
628 | { | |
629 | struct nfs41_call_sync_data *data = calldata; | |
630 | ||
14516c3a | 631 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
632 | } |
633 | ||
ce5039c1 AA |
634 | struct rpc_call_ops nfs41_call_sync_ops = { |
635 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 636 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
637 | }; |
638 | ||
b257957e AB |
639 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
640 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
641 | .rpc_call_done = nfs41_call_sync_done, | |
642 | }; | |
643 | ||
035168ab | 644 | static int nfs4_call_sync_sequence(struct nfs_server *server, |
ce5039c1 AA |
645 | struct rpc_message *msg, |
646 | struct nfs4_sequence_args *args, | |
647 | struct nfs4_sequence_res *res, | |
b257957e AB |
648 | int cache_reply, |
649 | int privileged) | |
ce5039c1 AA |
650 | { |
651 | int ret; | |
652 | struct rpc_task *task; | |
653 | struct nfs41_call_sync_data data = { | |
035168ab | 654 | .seq_server = server, |
ce5039c1 AA |
655 | .seq_args = args, |
656 | .seq_res = res, | |
657 | .cache_reply = cache_reply, | |
658 | }; | |
659 | struct rpc_task_setup task_setup = { | |
035168ab | 660 | .rpc_client = server->client, |
ce5039c1 AA |
661 | .rpc_message = msg, |
662 | .callback_ops = &nfs41_call_sync_ops, | |
663 | .callback_data = &data | |
664 | }; | |
665 | ||
dfb4f309 | 666 | res->sr_slot = NULL; |
b257957e AB |
667 | if (privileged) |
668 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
669 | task = rpc_run_task(&task_setup); |
670 | if (IS_ERR(task)) | |
671 | ret = PTR_ERR(task); | |
672 | else { | |
673 | ret = task->tk_status; | |
674 | rpc_put_task(task); | |
675 | } | |
676 | return ret; | |
677 | } | |
678 | ||
cccef3b9 AA |
679 | int _nfs4_call_sync_session(struct nfs_server *server, |
680 | struct rpc_message *msg, | |
681 | struct nfs4_sequence_args *args, | |
682 | struct nfs4_sequence_res *res, | |
683 | int cache_reply) | |
684 | { | |
035168ab | 685 | return nfs4_call_sync_sequence(server, msg, args, res, cache_reply, 0); |
cccef3b9 AA |
686 | } |
687 | ||
df896455 | 688 | #else |
14516c3a TM |
689 | static int nfs4_sequence_done(struct rpc_task *task, |
690 | struct nfs4_sequence_res *res) | |
df896455 | 691 | { |
14516c3a | 692 | return 1; |
df896455 | 693 | } |
cccef3b9 AA |
694 | #endif /* CONFIG_NFS_V4_1 */ |
695 | ||
696 | int _nfs4_call_sync(struct nfs_server *server, | |
697 | struct rpc_message *msg, | |
698 | struct nfs4_sequence_args *args, | |
699 | struct nfs4_sequence_res *res, | |
700 | int cache_reply) | |
701 | { | |
f3752975 | 702 | args->sa_session = res->sr_session = NULL; |
cccef3b9 AA |
703 | return rpc_call_sync(server->client, msg, 0); |
704 | } | |
705 | ||
706 | #define nfs4_call_sync(server, msg, args, res, cache_reply) \ | |
97dc1359 | 707 | (server)->nfs_client->cl_mvops->call_sync((server), (msg), &(args)->seq_args, \ |
cccef3b9 AA |
708 | &(res)->seq_res, (cache_reply)) |
709 | ||
38478b24 | 710 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 711 | { |
38478b24 | 712 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 713 | |
38478b24 | 714 | spin_lock(&dir->i_lock); |
40d24704 TM |
715 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
716 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 717 | nfs_force_lookup_revalidate(dir); |
40d24704 | 718 | nfsi->change_attr = cinfo->after; |
38478b24 | 719 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
720 | } |
721 | ||
e56e0b78 | 722 | struct nfs4_opendata { |
c6d00e63 | 723 | struct kref kref; |
e56e0b78 TM |
724 | struct nfs_openargs o_arg; |
725 | struct nfs_openres o_res; | |
cdd4e68b TM |
726 | struct nfs_open_confirmargs c_arg; |
727 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
728 | struct nfs_fattr f_attr; |
729 | struct nfs_fattr dir_attr; | |
ad389da7 | 730 | struct path path; |
e56e0b78 TM |
731 | struct dentry *dir; |
732 | struct nfs4_state_owner *owner; | |
aac00a8d | 733 | struct nfs4_state *state; |
e56e0b78 | 734 | struct iattr attrs; |
26e976a8 | 735 | unsigned long timestamp; |
3e309914 | 736 | unsigned int rpc_done : 1; |
24ac23ab TM |
737 | int rpc_status; |
738 | int cancelled; | |
e56e0b78 TM |
739 | }; |
740 | ||
2ced46c2 TM |
741 | |
742 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
743 | { | |
744 | p->o_res.f_attr = &p->f_attr; | |
745 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
746 | p->o_res.seqid = p->o_arg.seqid; |
747 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
748 | p->o_res.server = p->o_arg.server; |
749 | nfs_fattr_init(&p->f_attr); | |
750 | nfs_fattr_init(&p->dir_attr); | |
751 | } | |
752 | ||
ad389da7 | 753 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
dc0b027d | 754 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
755 | const struct iattr *attrs, |
756 | gfp_t gfp_mask) | |
e56e0b78 | 757 | { |
ad389da7 | 758 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
759 | struct inode *dir = parent->d_inode; |
760 | struct nfs_server *server = NFS_SERVER(dir); | |
761 | struct nfs4_opendata *p; | |
762 | ||
8535b2be | 763 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
764 | if (p == NULL) |
765 | goto err; | |
8535b2be | 766 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
767 | if (p->o_arg.seqid == NULL) |
768 | goto err_free; | |
f6948697 AV |
769 | path_get(path); |
770 | p->path = *path; | |
e56e0b78 TM |
771 | p->dir = parent; |
772 | p->owner = sp; | |
773 | atomic_inc(&sp->so_count); | |
774 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
775 | p->o_arg.open_flags = flags; |
776 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 777 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 778 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 779 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
780 | p->o_arg.server = server; |
781 | p->o_arg.bitmask = server->attr_bitmask; | |
782 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
d77d76ff TM |
783 | if (flags & O_CREAT) { |
784 | u32 *s; | |
785 | ||
e56e0b78 TM |
786 | p->o_arg.u.attrs = &p->attrs; |
787 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
788 | s = (u32 *) p->o_arg.u.verifier.data; |
789 | s[0] = jiffies; | |
790 | s[1] = current->pid; | |
e56e0b78 | 791 | } |
cdd4e68b TM |
792 | p->c_arg.fh = &p->o_res.fh; |
793 | p->c_arg.stateid = &p->o_res.stateid; | |
794 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 795 | nfs4_init_opendata_res(p); |
c6d00e63 | 796 | kref_init(&p->kref); |
e56e0b78 TM |
797 | return p; |
798 | err_free: | |
799 | kfree(p); | |
800 | err: | |
801 | dput(parent); | |
802 | return NULL; | |
803 | } | |
804 | ||
c6d00e63 | 805 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 806 | { |
c6d00e63 TM |
807 | struct nfs4_opendata *p = container_of(kref, |
808 | struct nfs4_opendata, kref); | |
809 | ||
810 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
811 | if (p->state != NULL) |
812 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
813 | nfs4_put_state_owner(p->owner); |
814 | dput(p->dir); | |
31f31db1 | 815 | path_put(&p->path); |
c6d00e63 TM |
816 | kfree(p); |
817 | } | |
818 | ||
819 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
820 | { | |
821 | if (p != NULL) | |
822 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
823 | } |
824 | ||
06f814a3 TM |
825 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
826 | { | |
06f814a3 TM |
827 | int ret; |
828 | ||
06f814a3 | 829 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
830 | return ret; |
831 | } | |
832 | ||
dc0b027d | 833 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
834 | { |
835 | int ret = 0; | |
dc0b027d TM |
836 | |
837 | if (open_mode & O_EXCL) | |
838 | goto out; | |
839 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 840 | case FMODE_READ: |
88069f77 TM |
841 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
842 | && state->n_rdonly != 0; | |
6ee41268 TM |
843 | break; |
844 | case FMODE_WRITE: | |
88069f77 TM |
845 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
846 | && state->n_wronly != 0; | |
6ee41268 TM |
847 | break; |
848 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
849 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
850 | && state->n_rdwr != 0; | |
6ee41268 | 851 | } |
dc0b027d | 852 | out: |
6ee41268 TM |
853 | return ret; |
854 | } | |
855 | ||
dc0b027d | 856 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 857 | { |
dc0b027d | 858 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 859 | return 0; |
15c831bf | 860 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 861 | return 0; |
b7391f44 | 862 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
863 | return 1; |
864 | } | |
865 | ||
dc0b027d | 866 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 867 | { |
dc0b027d | 868 | switch (fmode) { |
e7616923 TM |
869 | case FMODE_WRITE: |
870 | state->n_wronly++; | |
871 | break; | |
872 | case FMODE_READ: | |
873 | state->n_rdonly++; | |
874 | break; | |
875 | case FMODE_READ|FMODE_WRITE: | |
876 | state->n_rdwr++; | |
877 | } | |
dc0b027d | 878 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
879 | } |
880 | ||
dc0b027d | 881 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
882 | { |
883 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
884 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
885 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 886 | switch (fmode) { |
003707c7 TM |
887 | case FMODE_READ: |
888 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
889 | break; | |
890 | case FMODE_WRITE: | |
891 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
892 | break; | |
893 | case FMODE_READ|FMODE_WRITE: | |
894 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
895 | } | |
e7616923 TM |
896 | } |
897 | ||
dc0b027d | 898 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 899 | { |
8bda4e4c | 900 | write_seqlock(&state->seqlock); |
dc0b027d | 901 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 902 | write_sequnlock(&state->seqlock); |
003707c7 TM |
903 | } |
904 | ||
dc0b027d | 905 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 906 | { |
8bda4e4c TM |
907 | /* |
908 | * Protect the call to nfs4_state_set_mode_locked and | |
909 | * serialise the stateid update | |
910 | */ | |
911 | write_seqlock(&state->seqlock); | |
003707c7 TM |
912 | if (deleg_stateid != NULL) { |
913 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
914 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
915 | } | |
916 | if (open_stateid != NULL) | |
dc0b027d | 917 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
918 | write_sequnlock(&state->seqlock); |
919 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 920 | update_open_stateflags(state, fmode); |
ec073428 | 921 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
922 | } |
923 | ||
dc0b027d | 924 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
925 | { |
926 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
927 | struct nfs_delegation *deleg_cur; | |
928 | int ret = 0; | |
929 | ||
dc0b027d | 930 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
931 | |
932 | rcu_read_lock(); | |
933 | deleg_cur = rcu_dereference(nfsi->delegation); | |
934 | if (deleg_cur == NULL) | |
935 | goto no_delegation; | |
936 | ||
937 | spin_lock(&deleg_cur->lock); | |
938 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 939 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
940 | goto no_delegation_unlock; |
941 | ||
942 | if (delegation == NULL) | |
943 | delegation = &deleg_cur->stateid; | |
944 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
945 | goto no_delegation_unlock; | |
946 | ||
b7391f44 | 947 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 948 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
949 | ret = 1; |
950 | no_delegation_unlock: | |
951 | spin_unlock(&deleg_cur->lock); | |
952 | no_delegation: | |
953 | rcu_read_unlock(); | |
954 | ||
955 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 956 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
957 | ret = 1; |
958 | } | |
959 | ||
960 | return ret; | |
961 | } | |
962 | ||
963 | ||
dc0b027d | 964 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
965 | { |
966 | struct nfs_delegation *delegation; | |
967 | ||
968 | rcu_read_lock(); | |
969 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 970 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
971 | rcu_read_unlock(); |
972 | return; | |
973 | } | |
974 | rcu_read_unlock(); | |
975 | nfs_inode_return_delegation(inode); | |
976 | } | |
977 | ||
6ee41268 | 978 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
979 | { |
980 | struct nfs4_state *state = opendata->state; | |
981 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
982 | struct nfs_delegation *delegation; | |
dc0b027d TM |
983 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
984 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
985 | nfs4_stateid stateid; |
986 | int ret = -EAGAIN; | |
987 | ||
aac00a8d | 988 | for (;;) { |
dc0b027d | 989 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 990 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
991 | if (can_open_cached(state, fmode, open_mode)) { |
992 | update_open_stateflags(state, fmode); | |
6ee41268 | 993 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
994 | goto out_return_state; |
995 | } | |
996 | spin_unlock(&state->owner->so_lock); | |
997 | } | |
34310430 TM |
998 | rcu_read_lock(); |
999 | delegation = rcu_dereference(nfsi->delegation); | |
1000 | if (delegation == NULL || | |
dc0b027d | 1001 | !can_open_delegated(delegation, fmode)) { |
34310430 | 1002 | rcu_read_unlock(); |
aac00a8d | 1003 | break; |
34310430 | 1004 | } |
aac00a8d TM |
1005 | /* Save the delegation */ |
1006 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
1007 | rcu_read_unlock(); | |
af22f94a | 1008 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1009 | if (ret != 0) |
1010 | goto out; | |
1011 | ret = -EAGAIN; | |
34310430 TM |
1012 | |
1013 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1014 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1015 | goto out_return_state; |
aac00a8d | 1016 | } |
aac00a8d TM |
1017 | out: |
1018 | return ERR_PTR(ret); | |
1019 | out_return_state: | |
1020 | atomic_inc(&state->count); | |
1021 | return state; | |
1022 | } | |
1023 | ||
24ac23ab TM |
1024 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1025 | { | |
1026 | struct inode *inode; | |
1027 | struct nfs4_state *state = NULL; | |
003707c7 | 1028 | struct nfs_delegation *delegation; |
1b370bc2 | 1029 | int ret; |
24ac23ab | 1030 | |
aac00a8d | 1031 | if (!data->rpc_done) { |
6ee41268 | 1032 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1033 | goto out; |
1034 | } | |
1035 | ||
1b370bc2 | 1036 | ret = -EAGAIN; |
24ac23ab | 1037 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1038 | goto err; |
24ac23ab | 1039 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1040 | ret = PTR_ERR(inode); |
03f28e3a | 1041 | if (IS_ERR(inode)) |
1b370bc2 TM |
1042 | goto err; |
1043 | ret = -ENOMEM; | |
24ac23ab TM |
1044 | state = nfs4_get_open_state(inode, data->owner); |
1045 | if (state == NULL) | |
1b370bc2 | 1046 | goto err_put_inode; |
549d6ed5 | 1047 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
1048 | int delegation_flags = 0; |
1049 | ||
003707c7 TM |
1050 | rcu_read_lock(); |
1051 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1052 | if (delegation) | |
1053 | delegation_flags = delegation->flags; | |
1054 | rcu_read_unlock(); | |
15c831bf | 1055 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1056 | nfs_inode_set_delegation(state->inode, |
1057 | data->owner->so_cred, | |
1058 | &data->o_res); | |
1059 | else | |
1060 | nfs_inode_reclaim_delegation(state->inode, | |
1061 | data->owner->so_cred, | |
1062 | &data->o_res); | |
1063 | } | |
34310430 TM |
1064 | |
1065 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1066 | data->o_arg.fmode); |
24ac23ab | 1067 | iput(inode); |
aac00a8d | 1068 | out: |
24ac23ab | 1069 | return state; |
1b370bc2 TM |
1070 | err_put_inode: |
1071 | iput(inode); | |
1072 | err: | |
1073 | return ERR_PTR(ret); | |
24ac23ab TM |
1074 | } |
1075 | ||
864472e9 TM |
1076 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1077 | { | |
1078 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1079 | struct nfs_open_context *ctx; | |
1080 | ||
1081 | spin_lock(&state->inode->i_lock); | |
1082 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1083 | if (ctx->state != state) | |
1084 | continue; | |
1085 | get_nfs_open_context(ctx); | |
1086 | spin_unlock(&state->inode->i_lock); | |
1087 | return ctx; | |
1088 | } | |
1089 | spin_unlock(&state->inode->i_lock); | |
1090 | return ERR_PTR(-ENOENT); | |
1091 | } | |
1092 | ||
6f220ed5 TM |
1093 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1094 | { | |
1095 | struct nfs4_opendata *opendata; | |
1096 | ||
8535b2be | 1097 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1098 | if (opendata == NULL) |
1099 | return ERR_PTR(-ENOMEM); | |
1100 | opendata->state = state; | |
1101 | atomic_inc(&state->count); | |
1102 | return opendata; | |
1103 | } | |
1104 | ||
dc0b027d | 1105 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1106 | { |
2ced46c2 | 1107 | struct nfs4_state *newstate; |
864472e9 TM |
1108 | int ret; |
1109 | ||
dc0b027d TM |
1110 | opendata->o_arg.open_flags = 0; |
1111 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1112 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1113 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1114 | nfs4_init_opendata_res(opendata); | |
b257957e | 1115 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1116 | if (ret != 0) |
1117 | return ret; | |
2ced46c2 | 1118 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1119 | if (IS_ERR(newstate)) |
1120 | return PTR_ERR(newstate); | |
dc0b027d | 1121 | nfs4_close_state(&opendata->path, newstate, fmode); |
2ced46c2 | 1122 | *res = newstate; |
864472e9 TM |
1123 | return 0; |
1124 | } | |
1125 | ||
1126 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1127 | { | |
864472e9 | 1128 | struct nfs4_state *newstate; |
864472e9 TM |
1129 | int ret; |
1130 | ||
1131 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1132 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1133 | smp_rmb(); |
1134 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1135 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1136 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1137 | if (ret != 0) |
1138 | return ret; | |
2ced46c2 TM |
1139 | if (newstate != state) |
1140 | return -ESTALE; | |
864472e9 TM |
1141 | } |
1142 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1143 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1144 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1145 | if (ret != 0) |
1146 | return ret; | |
2ced46c2 TM |
1147 | if (newstate != state) |
1148 | return -ESTALE; | |
864472e9 TM |
1149 | } |
1150 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1151 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1152 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1153 | if (ret != 0) |
1154 | return ret; | |
2ced46c2 TM |
1155 | if (newstate != state) |
1156 | return -ESTALE; | |
864472e9 | 1157 | } |
1ac7e2fd TM |
1158 | /* |
1159 | * We may have performed cached opens for all three recoveries. | |
1160 | * Check if we need to update the current stateid. | |
1161 | */ | |
1162 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1163 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1164 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1165 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1166 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1167 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1168 | } |
864472e9 TM |
1169 | return 0; |
1170 | } | |
1171 | ||
1da177e4 LT |
1172 | /* |
1173 | * OPEN_RECLAIM: | |
1174 | * reclaim state on the server after a reboot. | |
1da177e4 | 1175 | */ |
539cd03a | 1176 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1177 | { |
1ac7e2fd | 1178 | struct nfs_delegation *delegation; |
864472e9 | 1179 | struct nfs4_opendata *opendata; |
dc0b027d | 1180 | fmode_t delegation_type = 0; |
1da177e4 LT |
1181 | int status; |
1182 | ||
6f220ed5 TM |
1183 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1184 | if (IS_ERR(opendata)) | |
1185 | return PTR_ERR(opendata); | |
864472e9 TM |
1186 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1187 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1188 | rcu_read_lock(); |
1189 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1190 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1191 | delegation_type = delegation->type; |
1ac7e2fd | 1192 | rcu_read_unlock(); |
864472e9 TM |
1193 | opendata->o_arg.u.delegation_type = delegation_type; |
1194 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1195 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1196 | return status; |
1197 | } | |
1198 | ||
539cd03a | 1199 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1200 | { |
1201 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1202 | struct nfs4_exception exception = { }; | |
1203 | int err; | |
1204 | do { | |
539cd03a | 1205 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1206 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1207 | break; |
1208 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1209 | } while (exception.retry); |
1210 | return err; | |
1211 | } | |
1212 | ||
864472e9 TM |
1213 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1214 | { | |
1215 | struct nfs_open_context *ctx; | |
1216 | int ret; | |
1217 | ||
1218 | ctx = nfs4_state_find_open_context(state); | |
1219 | if (IS_ERR(ctx)) | |
1220 | return PTR_ERR(ctx); | |
539cd03a | 1221 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1222 | put_nfs_open_context(ctx); |
1223 | return ret; | |
1224 | } | |
1225 | ||
13437e12 | 1226 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1227 | { |
e56e0b78 | 1228 | struct nfs4_opendata *opendata; |
864472e9 | 1229 | int ret; |
1da177e4 | 1230 | |
6f220ed5 TM |
1231 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1232 | if (IS_ERR(opendata)) | |
1233 | return PTR_ERR(opendata); | |
e56e0b78 | 1234 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1235 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1236 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1237 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1238 | nfs4_opendata_put(opendata); |
864472e9 | 1239 | return ret; |
1da177e4 LT |
1240 | } |
1241 | ||
13437e12 | 1242 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1243 | { |
1244 | struct nfs4_exception exception = { }; | |
539cd03a | 1245 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1246 | int err; |
1247 | do { | |
13437e12 | 1248 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1249 | switch (err) { |
1250 | case 0: | |
965b5d67 TM |
1251 | case -ENOENT: |
1252 | case -ESTALE: | |
1253 | goto out; | |
bcfa49f6 RL |
1254 | case -NFS4ERR_BADSESSION: |
1255 | case -NFS4ERR_BADSLOT: | |
1256 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1257 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1258 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1259 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1260 | goto out; |
1da177e4 LT |
1261 | case -NFS4ERR_STALE_CLIENTID: |
1262 | case -NFS4ERR_STALE_STATEID: | |
1263 | case -NFS4ERR_EXPIRED: | |
1264 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1265 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1266 | goto out; |
1267 | case -ERESTARTSYS: | |
1268 | /* | |
1269 | * The show must go on: exit, but mark the | |
1270 | * stateid as needing recovery. | |
1271 | */ | |
1272 | case -NFS4ERR_ADMIN_REVOKED: | |
1273 | case -NFS4ERR_BAD_STATEID: | |
0400a6b0 | 1274 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1275 | case -EKEYEXPIRED: |
1276 | /* | |
1277 | * User RPCSEC_GSS context has expired. | |
1278 | * We cannot recover this stateid now, so | |
1279 | * skip it and allow recovery thread to | |
1280 | * proceed. | |
1281 | */ | |
965b5d67 TM |
1282 | case -ENOMEM: |
1283 | err = 0; | |
1284 | goto out; | |
1da177e4 LT |
1285 | } |
1286 | err = nfs4_handle_exception(server, err, &exception); | |
1287 | } while (exception.retry); | |
965b5d67 | 1288 | out: |
1da177e4 LT |
1289 | return err; |
1290 | } | |
1291 | ||
cdd4e68b TM |
1292 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1293 | { | |
1294 | struct nfs4_opendata *data = calldata; | |
1295 | ||
1296 | data->rpc_status = task->tk_status; | |
26e976a8 | 1297 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1298 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1299 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1300 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1301 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1302 | data->rpc_done = 1; |
26e976a8 | 1303 | } |
cdd4e68b TM |
1304 | } |
1305 | ||
1306 | static void nfs4_open_confirm_release(void *calldata) | |
1307 | { | |
1308 | struct nfs4_opendata *data = calldata; | |
1309 | struct nfs4_state *state = NULL; | |
1310 | ||
1311 | /* If this request hasn't been cancelled, do nothing */ | |
1312 | if (data->cancelled == 0) | |
1313 | goto out_free; | |
1314 | /* In case of error, no cleanup! */ | |
3e309914 | 1315 | if (!data->rpc_done) |
cdd4e68b | 1316 | goto out_free; |
cdd4e68b | 1317 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1318 | if (!IS_ERR(state)) |
dc0b027d | 1319 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
cdd4e68b | 1320 | out_free: |
c6d00e63 | 1321 | nfs4_opendata_put(data); |
cdd4e68b TM |
1322 | } |
1323 | ||
1324 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1325 | .rpc_call_done = nfs4_open_confirm_done, |
1326 | .rpc_release = nfs4_open_confirm_release, | |
1327 | }; | |
1328 | ||
1329 | /* | |
1330 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1331 | */ | |
1332 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1333 | { | |
1334 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1335 | struct rpc_task *task; | |
5138fde0 TM |
1336 | struct rpc_message msg = { |
1337 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1338 | .rpc_argp = &data->c_arg, | |
1339 | .rpc_resp = &data->c_res, | |
1340 | .rpc_cred = data->owner->so_cred, | |
1341 | }; | |
c970aa85 TM |
1342 | struct rpc_task_setup task_setup_data = { |
1343 | .rpc_client = server->client, | |
5138fde0 | 1344 | .rpc_message = &msg, |
c970aa85 TM |
1345 | .callback_ops = &nfs4_open_confirm_ops, |
1346 | .callback_data = data, | |
101070ca | 1347 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1348 | .flags = RPC_TASK_ASYNC, |
1349 | }; | |
1da177e4 LT |
1350 | int status; |
1351 | ||
c6d00e63 | 1352 | kref_get(&data->kref); |
3e309914 TM |
1353 | data->rpc_done = 0; |
1354 | data->rpc_status = 0; | |
5138fde0 | 1355 | data->timestamp = jiffies; |
c970aa85 | 1356 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1357 | if (IS_ERR(task)) |
cdd4e68b | 1358 | return PTR_ERR(task); |
cdd4e68b TM |
1359 | status = nfs4_wait_for_completion_rpc_task(task); |
1360 | if (status != 0) { | |
1361 | data->cancelled = 1; | |
1362 | smp_wmb(); | |
1363 | } else | |
1364 | status = data->rpc_status; | |
e6b3c4db | 1365 | rpc_put_task(task); |
1da177e4 LT |
1366 | return status; |
1367 | } | |
1368 | ||
24ac23ab | 1369 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1370 | { |
24ac23ab TM |
1371 | struct nfs4_opendata *data = calldata; |
1372 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1373 | |
24ac23ab TM |
1374 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1375 | return; | |
aac00a8d TM |
1376 | /* |
1377 | * Check if we still need to send an OPEN call, or if we can use | |
1378 | * a delegation instead. | |
1379 | */ | |
1380 | if (data->state != NULL) { | |
1381 | struct nfs_delegation *delegation; | |
1382 | ||
dc0b027d | 1383 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1384 | goto out_no_action; |
aac00a8d TM |
1385 | rcu_read_lock(); |
1386 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
1387 | if (delegation != NULL && | |
15c831bf | 1388 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 1389 | rcu_read_unlock(); |
6ee41268 | 1390 | goto out_no_action; |
aac00a8d TM |
1391 | } |
1392 | rcu_read_unlock(); | |
1393 | } | |
24ac23ab | 1394 | /* Update sequence id. */ |
9f958ab8 | 1395 | data->o_arg.id = sp->so_owner_id.id; |
1f0e890d | 1396 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1397 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1398 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1399 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1400 | } | |
26e976a8 | 1401 | data->timestamp = jiffies; |
035168ab | 1402 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c AA |
1403 | &data->o_arg.seq_args, |
1404 | &data->o_res.seq_res, 1, task)) | |
1405 | return; | |
5138fde0 | 1406 | rpc_call_start(task); |
6ee41268 TM |
1407 | return; |
1408 | out_no_action: | |
1409 | task->tk_action = NULL; | |
1410 | ||
24ac23ab | 1411 | } |
1da177e4 | 1412 | |
b257957e AB |
1413 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1414 | { | |
1415 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1416 | nfs4_open_prepare(task, calldata); | |
1417 | } | |
1418 | ||
24ac23ab TM |
1419 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1420 | { | |
1421 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1422 | |
24ac23ab | 1423 | data->rpc_status = task->tk_status; |
d898528c | 1424 | |
14516c3a TM |
1425 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1426 | return; | |
d898528c | 1427 | |
24ac23ab TM |
1428 | if (task->tk_status == 0) { |
1429 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1430 | case S_IFREG: |
1431 | break; | |
1432 | case S_IFLNK: | |
24ac23ab | 1433 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1434 | break; |
1435 | case S_IFDIR: | |
24ac23ab | 1436 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1437 | break; |
1438 | default: | |
24ac23ab | 1439 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1440 | } |
26e976a8 | 1441 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1442 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1443 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1444 | } |
3e309914 | 1445 | data->rpc_done = 1; |
24ac23ab | 1446 | } |
6f926b5b | 1447 | |
24ac23ab TM |
1448 | static void nfs4_open_release(void *calldata) |
1449 | { | |
1450 | struct nfs4_opendata *data = calldata; | |
1451 | struct nfs4_state *state = NULL; | |
1452 | ||
1453 | /* If this request hasn't been cancelled, do nothing */ | |
1454 | if (data->cancelled == 0) | |
1455 | goto out_free; | |
1456 | /* In case of error, no cleanup! */ | |
3e309914 | 1457 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1458 | goto out_free; |
1459 | /* In case we need an open_confirm, no cleanup! */ | |
1460 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1461 | goto out_free; | |
24ac23ab | 1462 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1463 | if (!IS_ERR(state)) |
dc0b027d | 1464 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
24ac23ab | 1465 | out_free: |
c6d00e63 | 1466 | nfs4_opendata_put(data); |
24ac23ab TM |
1467 | } |
1468 | ||
1469 | static const struct rpc_call_ops nfs4_open_ops = { | |
1470 | .rpc_call_prepare = nfs4_open_prepare, | |
1471 | .rpc_call_done = nfs4_open_done, | |
1472 | .rpc_release = nfs4_open_release, | |
1473 | }; | |
1474 | ||
b257957e AB |
1475 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1476 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1477 | .rpc_call_done = nfs4_open_done, | |
1478 | .rpc_release = nfs4_open_release, | |
1479 | }; | |
1480 | ||
1481 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1482 | { |
1483 | struct inode *dir = data->dir->d_inode; | |
1484 | struct nfs_server *server = NFS_SERVER(dir); | |
1485 | struct nfs_openargs *o_arg = &data->o_arg; | |
1486 | struct nfs_openres *o_res = &data->o_res; | |
1487 | struct rpc_task *task; | |
5138fde0 TM |
1488 | struct rpc_message msg = { |
1489 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1490 | .rpc_argp = o_arg, | |
1491 | .rpc_resp = o_res, | |
1492 | .rpc_cred = data->owner->so_cred, | |
1493 | }; | |
c970aa85 TM |
1494 | struct rpc_task_setup task_setup_data = { |
1495 | .rpc_client = server->client, | |
5138fde0 | 1496 | .rpc_message = &msg, |
c970aa85 TM |
1497 | .callback_ops = &nfs4_open_ops, |
1498 | .callback_data = data, | |
101070ca | 1499 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1500 | .flags = RPC_TASK_ASYNC, |
1501 | }; | |
24ac23ab TM |
1502 | int status; |
1503 | ||
c6d00e63 | 1504 | kref_get(&data->kref); |
3e309914 TM |
1505 | data->rpc_done = 0; |
1506 | data->rpc_status = 0; | |
2ced46c2 | 1507 | data->cancelled = 0; |
b257957e AB |
1508 | if (isrecover) |
1509 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1510 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1511 | if (IS_ERR(task)) |
1512 | return PTR_ERR(task); | |
1513 | status = nfs4_wait_for_completion_rpc_task(task); | |
1514 | if (status != 0) { | |
1515 | data->cancelled = 1; | |
1516 | smp_wmb(); | |
1517 | } else | |
1518 | status = data->rpc_status; | |
1519 | rpc_put_task(task); | |
1520 | ||
1521 | return status; | |
1522 | } | |
1523 | ||
1524 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1525 | { | |
1526 | struct inode *dir = data->dir->d_inode; | |
1527 | struct nfs_openres *o_res = &data->o_res; | |
1528 | int status; | |
1529 | ||
1530 | status = nfs4_run_open_task(data, 1); | |
1531 | if (status != 0 || !data->rpc_done) | |
1532 | return status; | |
1533 | ||
1534 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1535 | ||
1536 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1537 | status = _nfs4_proc_open_confirm(data); | |
1538 | if (status != 0) | |
1539 | return status; | |
1540 | } | |
1541 | ||
1542 | return status; | |
1543 | } | |
1544 | ||
1545 | /* | |
1546 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1547 | */ | |
1548 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1549 | { | |
1550 | struct inode *dir = data->dir->d_inode; | |
1551 | struct nfs_server *server = NFS_SERVER(dir); | |
1552 | struct nfs_openargs *o_arg = &data->o_arg; | |
1553 | struct nfs_openres *o_res = &data->o_res; | |
1554 | int status; | |
1555 | ||
1556 | status = nfs4_run_open_task(data, 0); | |
3e309914 | 1557 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1558 | return status; |
1559 | ||
56ae19f3 TM |
1560 | if (o_arg->open_flags & O_CREAT) { |
1561 | update_changeattr(dir, &o_res->cinfo); | |
1562 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1563 | } else | |
1564 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1565 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1566 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1567 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1568 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1569 | if (status != 0) |
24ac23ab | 1570 | return status; |
1da177e4 LT |
1571 | } |
1572 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1573 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1574 | return 0; |
1da177e4 LT |
1575 | } |
1576 | ||
d83217c1 | 1577 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1578 | { |
a78cb57a | 1579 | unsigned int loop; |
6b30954e | 1580 | int ret; |
58d9714a | 1581 | |
a78cb57a | 1582 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1583 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1584 | if (ret != 0) |
a78cb57a | 1585 | break; |
e598d843 TM |
1586 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1587 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1588 | break; |
0400a6b0 | 1589 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1590 | ret = -EIO; |
6b30954e | 1591 | } |
a78cb57a | 1592 | return ret; |
58d9714a TM |
1593 | } |
1594 | ||
d83217c1 AA |
1595 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1596 | { | |
1597 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1598 | } | |
1599 | ||
1da177e4 LT |
1600 | /* |
1601 | * OPEN_EXPIRED: | |
1602 | * reclaim state on the server after a network partition. | |
1603 | * Assumes caller holds the appropriate lock | |
1604 | */ | |
539cd03a | 1605 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1606 | { |
e56e0b78 | 1607 | struct nfs4_opendata *opendata; |
864472e9 | 1608 | int ret; |
1da177e4 | 1609 | |
6f220ed5 TM |
1610 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1611 | if (IS_ERR(opendata)) | |
1612 | return PTR_ERR(opendata); | |
864472e9 | 1613 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1614 | if (ret == -ESTALE) |
539cd03a | 1615 | d_drop(ctx->path.dentry); |
c6d00e63 | 1616 | nfs4_opendata_put(opendata); |
864472e9 | 1617 | return ret; |
1da177e4 LT |
1618 | } |
1619 | ||
a9ed2e25 | 1620 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1621 | { |
539cd03a | 1622 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1623 | struct nfs4_exception exception = { }; |
1624 | int err; | |
1625 | ||
1626 | do { | |
539cd03a | 1627 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1628 | switch (err) { |
1629 | default: | |
1630 | goto out; | |
1631 | case -NFS4ERR_GRACE: | |
1632 | case -NFS4ERR_DELAY: | |
1633 | nfs4_handle_exception(server, err, &exception); | |
1634 | err = 0; | |
1635 | } | |
202b50dc | 1636 | } while (exception.retry); |
a9ed2e25 | 1637 | out: |
202b50dc TM |
1638 | return err; |
1639 | } | |
1640 | ||
1da177e4 LT |
1641 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1642 | { | |
1da177e4 | 1643 | struct nfs_open_context *ctx; |
864472e9 | 1644 | int ret; |
1da177e4 | 1645 | |
864472e9 TM |
1646 | ctx = nfs4_state_find_open_context(state); |
1647 | if (IS_ERR(ctx)) | |
1648 | return PTR_ERR(ctx); | |
539cd03a | 1649 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1650 | put_nfs_open_context(ctx); |
1651 | return ret; | |
1da177e4 LT |
1652 | } |
1653 | ||
aa53ed54 JL |
1654 | /* |
1655 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1656 | * fields corresponding to attributes that were used to store the verifier. | |
1657 | * Make sure we clobber those fields in the later setattr call | |
1658 | */ | |
1659 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1660 | { | |
1661 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1662 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1663 | sattr->ia_valid |= ATTR_ATIME; | |
1664 | ||
1665 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1666 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1667 | sattr->ia_valid |= ATTR_MTIME; | |
1668 | } | |
1669 | ||
1da177e4 | 1670 | /* |
24ac23ab | 1671 | * Returns a referenced nfs4_state |
1da177e4 | 1672 | */ |
dc0b027d | 1673 | 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 |
1674 | { |
1675 | struct nfs4_state_owner *sp; | |
1676 | struct nfs4_state *state = NULL; | |
1677 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1678 | struct nfs4_opendata *opendata; |
aac00a8d | 1679 | int status; |
1da177e4 LT |
1680 | |
1681 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1682 | status = -ENOMEM; |
1683 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1684 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1685 | goto out_err; | |
1686 | } | |
58d9714a TM |
1687 | status = nfs4_recover_expired_lease(server); |
1688 | if (status != 0) | |
b4454fe1 | 1689 | goto err_put_state_owner; |
aac00a8d | 1690 | if (path->dentry->d_inode != NULL) |
dc0b027d | 1691 | nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode); |
58d9714a | 1692 | status = -ENOMEM; |
8535b2be | 1693 | opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1694 | if (opendata == NULL) |
95d35cb4 | 1695 | goto err_put_state_owner; |
1da177e4 | 1696 | |
aac00a8d TM |
1697 | if (path->dentry->d_inode != NULL) |
1698 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1699 | ||
24ac23ab | 1700 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1701 | if (status != 0) |
c6d00e63 | 1702 | goto err_opendata_put; |
1da177e4 | 1703 | |
24ac23ab | 1704 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1705 | status = PTR_ERR(state); |
1706 | if (IS_ERR(state)) | |
c6d00e63 | 1707 | goto err_opendata_put; |
0df5dd4a | 1708 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1709 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1710 | |
1711 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1712 | nfs4_exclusive_attrset(opendata, sattr); | |
1713 | ||
1714 | nfs_fattr_init(opendata->o_res.f_attr); | |
1715 | status = nfs4_do_setattr(state->inode, cred, | |
1716 | opendata->o_res.f_attr, sattr, | |
1717 | state); | |
1718 | if (status == 0) | |
1719 | nfs_setattr_update_inode(state->inode, sattr); | |
1720 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1721 | } | |
c6d00e63 | 1722 | nfs4_opendata_put(opendata); |
1da177e4 | 1723 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1724 | *res = state; |
1725 | return 0; | |
c6d00e63 TM |
1726 | err_opendata_put: |
1727 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1728 | err_put_state_owner: |
1729 | nfs4_put_state_owner(sp); | |
1da177e4 | 1730 | out_err: |
1da177e4 LT |
1731 | *res = NULL; |
1732 | return status; | |
1733 | } | |
1734 | ||
1735 | ||
dc0b027d | 1736 | 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 |
1737 | { |
1738 | struct nfs4_exception exception = { }; | |
1739 | struct nfs4_state *res; | |
1740 | int status; | |
1741 | ||
1742 | do { | |
dc0b027d | 1743 | status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1744 | if (status == 0) |
1745 | break; | |
1746 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1747 | * book-keeping w.r.t. state-changing operations | |
1748 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1749 | * It is actually a sign of a bug on the client or on the server. | |
1750 | * | |
1751 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1752 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1753 | * have unhashed the old state_owner for us, and that we can |
1754 | * therefore safely retry using a new one. We should still warn | |
1755 | * the user though... | |
1756 | */ | |
1757 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1758 | printk(KERN_WARNING "NFS: v4 server %s " |
1759 | " returned a bad sequence-id error!\n", | |
1760 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1761 | exception.retry = 1; |
1762 | continue; | |
1763 | } | |
550f5747 TM |
1764 | /* |
1765 | * BAD_STATEID on OPEN means that the server cancelled our | |
1766 | * state before it received the OPEN_CONFIRM. | |
1767 | * Recover by retrying the request as per the discussion | |
1768 | * on Page 181 of RFC3530. | |
1769 | */ | |
1770 | if (status == -NFS4ERR_BAD_STATEID) { | |
1771 | exception.retry = 1; | |
1772 | continue; | |
1773 | } | |
aac00a8d TM |
1774 | if (status == -EAGAIN) { |
1775 | /* We must have found a delegation */ | |
1776 | exception.retry = 1; | |
1777 | continue; | |
1778 | } | |
1da177e4 LT |
1779 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1780 | status, &exception)); | |
1781 | } while (exception.retry); | |
1782 | return res; | |
1783 | } | |
1784 | ||
659bfcd6 TM |
1785 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1786 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1787 | struct nfs4_state *state) | |
1da177e4 | 1788 | { |
3e4f6290 | 1789 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1790 | struct nfs_setattrargs arg = { |
3e4f6290 | 1791 | .fh = NFS_FH(inode), |
1da177e4 LT |
1792 | .iap = sattr, |
1793 | .server = server, | |
1794 | .bitmask = server->attr_bitmask, | |
1795 | }; | |
1796 | struct nfs_setattrres res = { | |
1797 | .fattr = fattr, | |
1798 | .server = server, | |
1799 | }; | |
1800 | struct rpc_message msg = { | |
659bfcd6 TM |
1801 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1802 | .rpc_argp = &arg, | |
1803 | .rpc_resp = &res, | |
1804 | .rpc_cred = cred, | |
1da177e4 | 1805 | }; |
26e976a8 | 1806 | unsigned long timestamp = jiffies; |
65e4308d | 1807 | int status; |
1da177e4 | 1808 | |
0e574af1 | 1809 | nfs_fattr_init(fattr); |
1da177e4 | 1810 | |
3e4f6290 TM |
1811 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1812 | /* Use that stateid */ | |
1813 | } else if (state != NULL) { | |
77041ed9 | 1814 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1815 | } else |
1da177e4 LT |
1816 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1817 | ||
cccef3b9 | 1818 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
26e976a8 TM |
1819 | if (status == 0 && state != NULL) |
1820 | renew_lease(server, timestamp); | |
65e4308d | 1821 | return status; |
1da177e4 LT |
1822 | } |
1823 | ||
659bfcd6 TM |
1824 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1825 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1826 | struct nfs4_state *state) | |
1da177e4 | 1827 | { |
3e4f6290 | 1828 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1829 | struct nfs4_exception exception = { }; |
1830 | int err; | |
1831 | do { | |
1832 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1833 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1834 | &exception); |
1835 | } while (exception.retry); | |
1836 | return err; | |
1837 | } | |
1838 | ||
1839 | struct nfs4_closedata { | |
4a35bd41 | 1840 | struct path path; |
1da177e4 LT |
1841 | struct inode *inode; |
1842 | struct nfs4_state *state; | |
1843 | struct nfs_closeargs arg; | |
1844 | struct nfs_closeres res; | |
516a6af6 | 1845 | struct nfs_fattr fattr; |
26e976a8 | 1846 | unsigned long timestamp; |
f7e8917a FI |
1847 | bool roc; |
1848 | u32 roc_barrier; | |
1da177e4 LT |
1849 | }; |
1850 | ||
963d8fe5 | 1851 | static void nfs4_free_closedata(void *data) |
9512135d | 1852 | { |
963d8fe5 TM |
1853 | struct nfs4_closedata *calldata = data; |
1854 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d | 1855 | |
f7e8917a FI |
1856 | if (calldata->roc) |
1857 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1858 | nfs4_put_open_state(calldata->state); |
1859 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1860 | nfs4_put_state_owner(sp); |
31f31db1 | 1861 | path_put(&calldata->path); |
9512135d TM |
1862 | kfree(calldata); |
1863 | } | |
1864 | ||
88069f77 TM |
1865 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1866 | fmode_t fmode) | |
1867 | { | |
1868 | spin_lock(&state->owner->so_lock); | |
1869 | if (!(fmode & FMODE_READ)) | |
1870 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1871 | if (!(fmode & FMODE_WRITE)) | |
1872 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1873 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1874 | spin_unlock(&state->owner->so_lock); | |
1875 | } | |
1876 | ||
963d8fe5 | 1877 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1878 | { |
963d8fe5 | 1879 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1880 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1881 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1882 | ||
14516c3a TM |
1883 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1884 | return; | |
1da177e4 LT |
1885 | /* hmm. we are done with the inode, and in the process of freeing |
1886 | * the state_owner. we keep this around to process errors | |
1887 | */ | |
1da177e4 LT |
1888 | switch (task->tk_status) { |
1889 | case 0: | |
f7e8917a FI |
1890 | if (calldata->roc) |
1891 | pnfs_roc_set_barrier(state->inode, | |
1892 | calldata->roc_barrier); | |
45328c35 | 1893 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1894 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
1895 | nfs4_close_clear_stateid_flags(state, |
1896 | calldata->arg.fmode); | |
1da177e4 LT |
1897 | break; |
1898 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1899 | case -NFS4ERR_OLD_STATEID: |
1900 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1901 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1902 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1903 | break; |
1da177e4 | 1904 | default: |
72211dbe TM |
1905 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
1906 | rpc_restart_call_prepare(task); | |
1da177e4 | 1907 | } |
72211dbe | 1908 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 1909 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1910 | } |
1911 | ||
4ce70ada | 1912 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1913 | { |
4ce70ada | 1914 | struct nfs4_closedata *calldata = data; |
9512135d | 1915 | struct nfs4_state *state = calldata->state; |
88069f77 | 1916 | int call_close = 0; |
9512135d | 1917 | |
963d8fe5 | 1918 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1919 | return; |
003707c7 | 1920 | |
88069f77 TM |
1921 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
1922 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 1923 | spin_lock(&state->owner->so_lock); |
003707c7 | 1924 | /* Calculate the change in open mode */ |
e7616923 | 1925 | if (state->n_rdwr == 0) { |
003707c7 | 1926 | if (state->n_rdonly == 0) { |
88069f77 TM |
1927 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
1928 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1929 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
1930 | } |
1931 | if (state->n_wronly == 0) { | |
88069f77 TM |
1932 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
1933 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1934 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 1935 | } |
e7616923 | 1936 | } |
4cecb76f | 1937 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
1938 | |
1939 | if (!call_close) { | |
963d8fe5 TM |
1940 | /* Note: exit _without_ calling nfs4_close_done */ |
1941 | task->tk_action = NULL; | |
9512135d TM |
1942 | return; |
1943 | } | |
88069f77 | 1944 | |
f7e8917a | 1945 | if (calldata->arg.fmode == 0) { |
88069f77 | 1946 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
1947 | if (calldata->roc && |
1948 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
1949 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
1950 | task, NULL); | |
1951 | return; | |
1952 | } | |
1953 | } | |
88069f77 | 1954 | |
516a6af6 | 1955 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 1956 | calldata->timestamp = jiffies; |
035168ab | 1957 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
19ddab06 AA |
1958 | &calldata->arg.seq_args, &calldata->res.seq_res, |
1959 | 1, task)) | |
1960 | return; | |
5138fde0 | 1961 | rpc_call_start(task); |
1da177e4 LT |
1962 | } |
1963 | ||
963d8fe5 | 1964 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1965 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1966 | .rpc_call_done = nfs4_close_done, |
1967 | .rpc_release = nfs4_free_closedata, | |
1968 | }; | |
1969 | ||
1da177e4 LT |
1970 | /* |
1971 | * It is possible for data to be read/written from a mem-mapped file | |
1972 | * after the sys_close call (which hits the vfs layer as a flush). | |
1973 | * This means that we can't safely call nfsv4 close on a file until | |
1974 | * the inode is cleared. This in turn means that we are not good | |
1975 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1976 | * share state even when we are done with one of the three share | |
1977 | * stateid's in the inode. | |
1978 | * | |
1979 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1980 | */ | |
f7e8917a | 1981 | int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 1982 | { |
4a35bd41 | 1983 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 1984 | struct nfs4_closedata *calldata; |
b39e625b TM |
1985 | struct nfs4_state_owner *sp = state->owner; |
1986 | struct rpc_task *task; | |
5138fde0 TM |
1987 | struct rpc_message msg = { |
1988 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
1989 | .rpc_cred = state->owner->so_cred, | |
1990 | }; | |
c970aa85 TM |
1991 | struct rpc_task_setup task_setup_data = { |
1992 | .rpc_client = server->client, | |
5138fde0 | 1993 | .rpc_message = &msg, |
c970aa85 | 1994 | .callback_ops = &nfs4_close_ops, |
101070ca | 1995 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1996 | .flags = RPC_TASK_ASYNC, |
1997 | }; | |
9512135d | 1998 | int status = -ENOMEM; |
1da177e4 | 1999 | |
8535b2be | 2000 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2001 | if (calldata == NULL) |
9512135d | 2002 | goto out; |
4a35bd41 | 2003 | calldata->inode = state->inode; |
1da177e4 | 2004 | calldata->state = state; |
4a35bd41 | 2005 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2006 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2007 | /* Serialization for the sequence id */ |
8535b2be | 2008 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2009 | if (calldata->arg.seqid == NULL) |
2010 | goto out_free_calldata; | |
dc0b027d | 2011 | calldata->arg.fmode = 0; |
a65318bf | 2012 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2013 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2014 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2015 | calldata->res.server = server; |
f7e8917a | 2016 | calldata->roc = roc; |
f6948697 AV |
2017 | path_get(path); |
2018 | calldata->path = *path; | |
9512135d | 2019 | |
1174dd1f TM |
2020 | msg.rpc_argp = &calldata->arg; |
2021 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2022 | task_setup_data.callback_data = calldata; |
2023 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2024 | if (IS_ERR(task)) |
2025 | return PTR_ERR(task); | |
a49c3c77 TM |
2026 | status = 0; |
2027 | if (wait) | |
2028 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2029 | rpc_put_task(task); |
a49c3c77 | 2030 | return status; |
9512135d TM |
2031 | out_free_calldata: |
2032 | kfree(calldata); | |
2033 | out: | |
f7e8917a FI |
2034 | if (roc) |
2035 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2036 | nfs4_put_open_state(state); |
2037 | nfs4_put_state_owner(sp); | |
9512135d | 2038 | return status; |
1da177e4 LT |
2039 | } |
2040 | ||
2b484297 | 2041 | static struct inode * |
cd9a1c0e | 2042 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2043 | { |
1da177e4 | 2044 | struct nfs4_state *state; |
1da177e4 | 2045 | |
565277f6 | 2046 | /* Protect against concurrent sillydeletes */ |
cd9a1c0e | 2047 | state = nfs4_do_open(dir, &ctx->path, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2048 | if (IS_ERR(state)) |
2049 | return ERR_CAST(state); | |
cd9a1c0e | 2050 | ctx->state = state; |
f46e0bd3 | 2051 | return igrab(state->inode); |
1da177e4 LT |
2052 | } |
2053 | ||
1185a552 | 2054 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2055 | { |
2056 | if (ctx->state == NULL) | |
2057 | return; | |
2058 | if (is_sync) | |
2059 | nfs4_close_sync(&ctx->path, ctx->state, ctx->mode); | |
2060 | else | |
2061 | nfs4_close_state(&ctx->path, ctx->state, ctx->mode); | |
2062 | } | |
1da177e4 LT |
2063 | |
2064 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2065 | { | |
43652ad5 BH |
2066 | struct nfs4_server_caps_arg args = { |
2067 | .fhandle = fhandle, | |
2068 | }; | |
1da177e4 LT |
2069 | struct nfs4_server_caps_res res = {}; |
2070 | struct rpc_message msg = { | |
2071 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2072 | .rpc_argp = &args, |
1da177e4 LT |
2073 | .rpc_resp = &res, |
2074 | }; | |
2075 | int status; | |
2076 | ||
cccef3b9 | 2077 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2078 | if (status == 0) { |
2079 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2080 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2081 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2082 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2083 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2084 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2085 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2086 | server->caps |= NFS_CAP_ACLS; | |
2087 | if (res.has_links != 0) | |
2088 | server->caps |= NFS_CAP_HARDLINKS; | |
2089 | if (res.has_symlinks != 0) | |
2090 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2091 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2092 | server->caps |= NFS_CAP_FILEID; | |
2093 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2094 | server->caps |= NFS_CAP_MODE; | |
2095 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2096 | server->caps |= NFS_CAP_NLINK; | |
2097 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2098 | server->caps |= NFS_CAP_OWNER; | |
2099 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2100 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2101 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2102 | server->caps |= NFS_CAP_ATIME; | |
2103 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2104 | server->caps |= NFS_CAP_CTIME; | |
2105 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2106 | server->caps |= NFS_CAP_MTIME; | |
2107 | ||
a65318bf TM |
2108 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2109 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2110 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2111 | server->acl_bitmask = res.acl_bitmask; |
2112 | } | |
cccef3b9 | 2113 | |
1da177e4 LT |
2114 | return status; |
2115 | } | |
2116 | ||
55a97593 | 2117 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2118 | { |
2119 | struct nfs4_exception exception = { }; | |
2120 | int err; | |
2121 | do { | |
2122 | err = nfs4_handle_exception(server, | |
2123 | _nfs4_server_capabilities(server, fhandle), | |
2124 | &exception); | |
2125 | } while (exception.retry); | |
2126 | return err; | |
2127 | } | |
2128 | ||
2129 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2130 | struct nfs_fsinfo *info) | |
2131 | { | |
1da177e4 LT |
2132 | struct nfs4_lookup_root_arg args = { |
2133 | .bitmask = nfs4_fattr_bitmap, | |
2134 | }; | |
2135 | struct nfs4_lookup_res res = { | |
2136 | .server = server, | |
0e574af1 | 2137 | .fattr = info->fattr, |
1da177e4 LT |
2138 | .fh = fhandle, |
2139 | }; | |
2140 | struct rpc_message msg = { | |
2141 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2142 | .rpc_argp = &args, | |
2143 | .rpc_resp = &res, | |
2144 | }; | |
008f55d0 | 2145 | |
0e574af1 | 2146 | nfs_fattr_init(info->fattr); |
fccba804 | 2147 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2148 | } |
2149 | ||
2150 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2151 | struct nfs_fsinfo *info) | |
2152 | { | |
2153 | struct nfs4_exception exception = { }; | |
2154 | int err; | |
2155 | do { | |
2156 | err = nfs4_handle_exception(server, | |
2157 | _nfs4_lookup_root(server, fhandle, info), | |
2158 | &exception); | |
2159 | } while (exception.retry); | |
2160 | return err; | |
2161 | } | |
2162 | ||
54ceac45 DH |
2163 | /* |
2164 | * get the file handle for the "/" directory on the server | |
2165 | */ | |
1da177e4 | 2166 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2167 | struct nfs_fsinfo *info) |
1da177e4 | 2168 | { |
1da177e4 LT |
2169 | int status; |
2170 | ||
1da177e4 | 2171 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
2172 | if (status == 0) |
2173 | status = nfs4_server_capabilities(server, fhandle); | |
2174 | if (status == 0) | |
2175 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2176 | return nfs4_map_errors(status); |
1da177e4 LT |
2177 | } |
2178 | ||
6b97fd3d MN |
2179 | /* |
2180 | * Get locations and (maybe) other attributes of a referral. | |
2181 | * Note that we'll actually follow the referral later when | |
2182 | * we detect fsid mismatch in inode revalidation | |
2183 | */ | |
56659e99 | 2184 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
2185 | { |
2186 | int status = -ENOMEM; | |
2187 | struct page *page = NULL; | |
2188 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2189 | |
2190 | page = alloc_page(GFP_KERNEL); | |
2191 | if (page == NULL) | |
2192 | goto out; | |
2193 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2194 | if (locations == NULL) | |
2195 | goto out; | |
2196 | ||
c228fd3a | 2197 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2198 | if (status != 0) |
2199 | goto out; | |
2200 | /* Make sure server returned a different fsid for the referral */ | |
2201 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
3110ff80 | 2202 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name); |
6b97fd3d MN |
2203 | status = -EIO; |
2204 | goto out; | |
2205 | } | |
2206 | ||
2207 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
2208 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
2209 | if (!fattr->mode) | |
2210 | fattr->mode = S_IFDIR; | |
2211 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
2212 | out: | |
2213 | if (page) | |
2214 | __free_page(page); | |
5d7ca35a | 2215 | kfree(locations); |
6b97fd3d MN |
2216 | return status; |
2217 | } | |
2218 | ||
1da177e4 LT |
2219 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2220 | { | |
2221 | struct nfs4_getattr_arg args = { | |
2222 | .fh = fhandle, | |
2223 | .bitmask = server->attr_bitmask, | |
2224 | }; | |
2225 | struct nfs4_getattr_res res = { | |
2226 | .fattr = fattr, | |
2227 | .server = server, | |
2228 | }; | |
2229 | struct rpc_message msg = { | |
2230 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2231 | .rpc_argp = &args, | |
2232 | .rpc_resp = &res, | |
2233 | }; | |
2234 | ||
0e574af1 | 2235 | nfs_fattr_init(fattr); |
cccef3b9 | 2236 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2237 | } |
2238 | ||
2239 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2240 | { | |
2241 | struct nfs4_exception exception = { }; | |
2242 | int err; | |
2243 | do { | |
2244 | err = nfs4_handle_exception(server, | |
2245 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2246 | &exception); | |
2247 | } while (exception.retry); | |
2248 | return err; | |
2249 | } | |
2250 | ||
2251 | /* | |
2252 | * The file is not closed if it is opened due to the a request to change | |
2253 | * the size of the file. The open call will not be needed once the | |
2254 | * VFS layer lookup-intents are implemented. | |
2255 | * | |
2256 | * Close is called when the inode is destroyed. | |
2257 | * If we haven't opened the file for O_WRONLY, we | |
2258 | * need to in the size_change case to obtain a stateid. | |
2259 | * | |
2260 | * Got race? | |
2261 | * Because OPEN is always done by name in nfsv4, it is | |
2262 | * possible that we opened a different file by the same | |
2263 | * name. We can recognize this race condition, but we | |
2264 | * can't do anything about it besides returning an error. | |
2265 | * | |
2266 | * This will be fixed with VFS changes (lookup-intent). | |
2267 | */ | |
2268 | static int | |
2269 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2270 | struct iattr *sattr) | |
2271 | { | |
08e9eac4 | 2272 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2273 | struct rpc_cred *cred = NULL; |
d530838b | 2274 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2275 | int status; |
2276 | ||
0e574af1 | 2277 | nfs_fattr_init(fattr); |
1da177e4 | 2278 | |
d530838b | 2279 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2280 | if (sattr->ia_valid & ATTR_FILE) { |
2281 | struct nfs_open_context *ctx; | |
2282 | ||
2283 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2284 | if (ctx) { |
2285 | cred = ctx->cred; | |
2286 | state = ctx->state; | |
2287 | } | |
659bfcd6 | 2288 | } |
08e9eac4 | 2289 | |
659bfcd6 | 2290 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2291 | if (status == 0) |
2292 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2293 | return status; |
2294 | } | |
2295 | ||
56659e99 TM |
2296 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
2297 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
2298 | struct nfs_fattr *fattr) |
2299 | { | |
2300 | int status; | |
2301 | struct nfs4_lookup_arg args = { | |
2302 | .bitmask = server->attr_bitmask, | |
2303 | .dir_fh = dirfh, | |
2304 | .name = name, | |
2305 | }; | |
2306 | struct nfs4_lookup_res res = { | |
2307 | .server = server, | |
2308 | .fattr = fattr, | |
2309 | .fh = fhandle, | |
2310 | }; | |
2311 | struct rpc_message msg = { | |
2312 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2313 | .rpc_argp = &args, | |
2314 | .rpc_resp = &res, | |
2315 | }; | |
2316 | ||
2317 | nfs_fattr_init(fattr); | |
2318 | ||
2319 | dprintk("NFS call lookupfh %s\n", name->name); | |
cccef3b9 | 2320 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
2b3de441 | 2321 | dprintk("NFS reply lookupfh: %d\n", status); |
2b3de441 DH |
2322 | return status; |
2323 | } | |
2324 | ||
2325 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
2326 | struct qstr *name, struct nfs_fh *fhandle, | |
2327 | struct nfs_fattr *fattr) | |
2328 | { | |
2329 | struct nfs4_exception exception = { }; | |
2330 | int err; | |
2331 | do { | |
4e56e082 TM |
2332 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
2333 | /* FIXME: !!!! */ | |
2334 | if (err == -NFS4ERR_MOVED) { | |
2335 | err = -EREMOTE; | |
2336 | break; | |
2337 | } | |
2338 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
2339 | } while (exception.retry); |
2340 | return err; | |
2341 | } | |
2342 | ||
56659e99 | 2343 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
2344 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2345 | { | |
4e56e082 | 2346 | int status; |
1da177e4 LT |
2347 | |
2348 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 2349 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
2350 | if (status == -NFS4ERR_MOVED) |
2351 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
2352 | dprintk("NFS reply lookup: %d\n", status); |
2353 | return status; | |
2354 | } | |
2355 | ||
2356 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2357 | { | |
2358 | struct nfs4_exception exception = { }; | |
2359 | int err; | |
2360 | do { | |
2361 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2362 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
2363 | &exception); | |
2364 | } while (exception.retry); | |
2365 | return err; | |
2366 | } | |
2367 | ||
2368 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2369 | { | |
76b32999 | 2370 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2371 | struct nfs4_accessargs args = { |
2372 | .fh = NFS_FH(inode), | |
76b32999 TM |
2373 | .bitmask = server->attr_bitmask, |
2374 | }; | |
2375 | struct nfs4_accessres res = { | |
2376 | .server = server, | |
1da177e4 | 2377 | }; |
1da177e4 LT |
2378 | struct rpc_message msg = { |
2379 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2380 | .rpc_argp = &args, | |
2381 | .rpc_resp = &res, | |
2382 | .rpc_cred = entry->cred, | |
2383 | }; | |
2384 | int mode = entry->mask; | |
2385 | int status; | |
2386 | ||
2387 | /* | |
2388 | * Determine which access bits we want to ask for... | |
2389 | */ | |
2390 | if (mode & MAY_READ) | |
2391 | args.access |= NFS4_ACCESS_READ; | |
2392 | if (S_ISDIR(inode->i_mode)) { | |
2393 | if (mode & MAY_WRITE) | |
2394 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2395 | if (mode & MAY_EXEC) | |
2396 | args.access |= NFS4_ACCESS_LOOKUP; | |
2397 | } else { | |
2398 | if (mode & MAY_WRITE) | |
2399 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2400 | if (mode & MAY_EXEC) | |
2401 | args.access |= NFS4_ACCESS_EXECUTE; | |
2402 | } | |
c407d41a TM |
2403 | |
2404 | res.fattr = nfs_alloc_fattr(); | |
2405 | if (res.fattr == NULL) | |
2406 | return -ENOMEM; | |
2407 | ||
cccef3b9 | 2408 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2409 | if (!status) { |
2410 | entry->mask = 0; | |
2411 | if (res.access & NFS4_ACCESS_READ) | |
2412 | entry->mask |= MAY_READ; | |
2413 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2414 | entry->mask |= MAY_WRITE; | |
2415 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2416 | entry->mask |= MAY_EXEC; | |
c407d41a | 2417 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2418 | } |
c407d41a | 2419 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2420 | return status; |
2421 | } | |
2422 | ||
2423 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2424 | { | |
2425 | struct nfs4_exception exception = { }; | |
2426 | int err; | |
2427 | do { | |
2428 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2429 | _nfs4_proc_access(inode, entry), | |
2430 | &exception); | |
2431 | } while (exception.retry); | |
2432 | return err; | |
2433 | } | |
2434 | ||
2435 | /* | |
2436 | * TODO: For the time being, we don't try to get any attributes | |
2437 | * along with any of the zero-copy operations READ, READDIR, | |
2438 | * READLINK, WRITE. | |
2439 | * | |
2440 | * In the case of the first three, we want to put the GETATTR | |
2441 | * after the read-type operation -- this is because it is hard | |
2442 | * to predict the length of a GETATTR response in v4, and thus | |
2443 | * align the READ data correctly. This means that the GETATTR | |
2444 | * may end up partially falling into the page cache, and we should | |
2445 | * shift it into the 'tail' of the xdr_buf before processing. | |
2446 | * To do this efficiently, we need to know the total length | |
2447 | * of data received, which doesn't seem to be available outside | |
2448 | * of the RPC layer. | |
2449 | * | |
2450 | * In the case of WRITE, we also want to put the GETATTR after | |
2451 | * the operation -- in this case because we want to make sure | |
2452 | * we get the post-operation mtime and size. This means that | |
2453 | * we can't use xdr_encode_pages() as written: we need a variant | |
2454 | * of it which would leave room in the 'tail' iovec. | |
2455 | * | |
2456 | * Both of these changes to the XDR layer would in fact be quite | |
2457 | * minor, but I decided to leave them for a subsequent patch. | |
2458 | */ | |
2459 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2460 | unsigned int pgbase, unsigned int pglen) | |
2461 | { | |
2462 | struct nfs4_readlink args = { | |
2463 | .fh = NFS_FH(inode), | |
2464 | .pgbase = pgbase, | |
2465 | .pglen = pglen, | |
2466 | .pages = &page, | |
2467 | }; | |
f50c7000 | 2468 | struct nfs4_readlink_res res; |
1da177e4 LT |
2469 | struct rpc_message msg = { |
2470 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2471 | .rpc_argp = &args, | |
f50c7000 | 2472 | .rpc_resp = &res, |
1da177e4 LT |
2473 | }; |
2474 | ||
cccef3b9 | 2475 | return nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
1da177e4 LT |
2476 | } |
2477 | ||
2478 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2479 | unsigned int pgbase, unsigned int pglen) | |
2480 | { | |
2481 | struct nfs4_exception exception = { }; | |
2482 | int err; | |
2483 | do { | |
2484 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2485 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2486 | &exception); | |
2487 | } while (exception.retry); | |
2488 | return err; | |
2489 | } | |
2490 | ||
1da177e4 LT |
2491 | /* |
2492 | * Got race? | |
2493 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2494 | * Until then, this create/open method is prone to inefficiency and race | |
2495 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2496 | * placed on the wire. | |
2497 | * | |
2498 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2499 | * The file will be opened again in the subsequent VFS open call | |
2500 | * (nfs4_proc_file_open). | |
2501 | * | |
2502 | * The open for read will just hang around to be used by any process that | |
2503 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2504 | */ | |
2505 | ||
2506 | static int | |
2507 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2508 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2509 | { |
c0204fd2 | 2510 | struct path my_path = { |
ad389da7 TM |
2511 | .dentry = dentry, |
2512 | }; | |
c0204fd2 | 2513 | struct path *path = &my_path; |
1da177e4 | 2514 | struct nfs4_state *state; |
c0204fd2 TM |
2515 | struct rpc_cred *cred = NULL; |
2516 | fmode_t fmode = 0; | |
1da177e4 LT |
2517 | int status = 0; |
2518 | ||
c0204fd2 TM |
2519 | if (ctx != NULL) { |
2520 | cred = ctx->cred; | |
2521 | path = &ctx->path; | |
2522 | fmode = ctx->mode; | |
1da177e4 | 2523 | } |
a8a5da99 | 2524 | sattr->ia_mode &= ~current_umask(); |
c0204fd2 | 2525 | state = nfs4_do_open(dir, path, fmode, flags, sattr, cred); |
d4d9cdcb | 2526 | d_drop(dentry); |
1da177e4 LT |
2527 | if (IS_ERR(state)) { |
2528 | status = PTR_ERR(state); | |
c0204fd2 | 2529 | goto out; |
1da177e4 | 2530 | } |
d4d9cdcb | 2531 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2532 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2533 | if (ctx != NULL) |
2534 | ctx->state = state; | |
02a913a7 | 2535 | else |
c0204fd2 | 2536 | nfs4_close_sync(path, state, fmode); |
1da177e4 LT |
2537 | out: |
2538 | return status; | |
2539 | } | |
2540 | ||
2541 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2542 | { | |
16e42959 | 2543 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2544 | struct nfs_removeargs args = { |
1da177e4 | 2545 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2546 | .name.len = name->len, |
2547 | .name.name = name->name, | |
16e42959 TM |
2548 | .bitmask = server->attr_bitmask, |
2549 | }; | |
4fdc17b2 | 2550 | struct nfs_removeres res = { |
16e42959 | 2551 | .server = server, |
1da177e4 | 2552 | }; |
1da177e4 | 2553 | struct rpc_message msg = { |
4fdc17b2 TM |
2554 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2555 | .rpc_argp = &args, | |
2556 | .rpc_resp = &res, | |
1da177e4 | 2557 | }; |
d346890b TM |
2558 | int status = -ENOMEM; |
2559 | ||
2560 | res.dir_attr = nfs_alloc_fattr(); | |
2561 | if (res.dir_attr == NULL) | |
2562 | goto out; | |
1da177e4 | 2563 | |
cccef3b9 | 2564 | status = nfs4_call_sync(server, &msg, &args, &res, 1); |
16e42959 TM |
2565 | if (status == 0) { |
2566 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2567 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2568 | } |
d346890b TM |
2569 | nfs_free_fattr(res.dir_attr); |
2570 | out: | |
1da177e4 LT |
2571 | return status; |
2572 | } | |
2573 | ||
2574 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2575 | { | |
2576 | struct nfs4_exception exception = { }; | |
2577 | int err; | |
2578 | do { | |
2579 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2580 | _nfs4_proc_remove(dir, name), | |
2581 | &exception); | |
2582 | } while (exception.retry); | |
2583 | return err; | |
2584 | } | |
2585 | ||
e4eff1a6 | 2586 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2587 | { |
e4eff1a6 TM |
2588 | struct nfs_server *server = NFS_SERVER(dir); |
2589 | struct nfs_removeargs *args = msg->rpc_argp; | |
2590 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2591 | |
a65318bf | 2592 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2593 | res->server = server; |
dfb4f309 | 2594 | res->seq_res.sr_slot = NULL; |
1da177e4 | 2595 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2596 | } |
2597 | ||
e4eff1a6 | 2598 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2599 | { |
e4eff1a6 TM |
2600 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2601 | ||
14516c3a TM |
2602 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2603 | return 0; | |
9e33bed5 | 2604 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2605 | return 0; |
2606 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2607 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2608 | return 1; |
1da177e4 LT |
2609 | } |
2610 | ||
d3d4152a JL |
2611 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2612 | { | |
2613 | struct nfs_server *server = NFS_SERVER(dir); | |
2614 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2615 | struct nfs_renameres *res = msg->rpc_resp; | |
2616 | ||
2617 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2618 | arg->bitmask = server->attr_bitmask; | |
2619 | res->server = server; | |
2620 | } | |
2621 | ||
2622 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2623 | struct inode *new_dir) | |
2624 | { | |
2625 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2626 | ||
2627 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2628 | return 0; | |
2629 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2630 | return 0; | |
2631 | ||
2632 | update_changeattr(old_dir, &res->old_cinfo); | |
2633 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2634 | update_changeattr(new_dir, &res->new_cinfo); | |
2635 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2636 | return 1; | |
2637 | } | |
2638 | ||
1da177e4 LT |
2639 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2640 | struct inode *new_dir, struct qstr *new_name) | |
2641 | { | |
6caf2c82 | 2642 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2643 | struct nfs_renameargs arg = { |
1da177e4 LT |
2644 | .old_dir = NFS_FH(old_dir), |
2645 | .new_dir = NFS_FH(new_dir), | |
2646 | .old_name = old_name, | |
2647 | .new_name = new_name, | |
6caf2c82 TM |
2648 | .bitmask = server->attr_bitmask, |
2649 | }; | |
e8582a8b | 2650 | struct nfs_renameres res = { |
6caf2c82 | 2651 | .server = server, |
1da177e4 | 2652 | }; |
1da177e4 LT |
2653 | struct rpc_message msg = { |
2654 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2655 | .rpc_argp = &arg, | |
2656 | .rpc_resp = &res, | |
2657 | }; | |
011fff72 | 2658 | int status = -ENOMEM; |
1da177e4 | 2659 | |
011fff72 TM |
2660 | res.old_fattr = nfs_alloc_fattr(); |
2661 | res.new_fattr = nfs_alloc_fattr(); | |
2662 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2663 | goto out; | |
1da177e4 | 2664 | |
011fff72 | 2665 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
1da177e4 LT |
2666 | if (!status) { |
2667 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2668 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2669 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2670 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2671 | } |
011fff72 TM |
2672 | out: |
2673 | nfs_free_fattr(res.new_fattr); | |
2674 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2675 | return status; |
2676 | } | |
2677 | ||
2678 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2679 | struct inode *new_dir, struct qstr *new_name) | |
2680 | { | |
2681 | struct nfs4_exception exception = { }; | |
2682 | int err; | |
2683 | do { | |
2684 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2685 | _nfs4_proc_rename(old_dir, old_name, | |
2686 | new_dir, new_name), | |
2687 | &exception); | |
2688 | } while (exception.retry); | |
2689 | return err; | |
2690 | } | |
2691 | ||
2692 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2693 | { | |
91ba2eee | 2694 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2695 | struct nfs4_link_arg arg = { |
2696 | .fh = NFS_FH(inode), | |
2697 | .dir_fh = NFS_FH(dir), | |
2698 | .name = name, | |
91ba2eee TM |
2699 | .bitmask = server->attr_bitmask, |
2700 | }; | |
91ba2eee TM |
2701 | struct nfs4_link_res res = { |
2702 | .server = server, | |
1da177e4 | 2703 | }; |
1da177e4 LT |
2704 | struct rpc_message msg = { |
2705 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2706 | .rpc_argp = &arg, | |
91ba2eee | 2707 | .rpc_resp = &res, |
1da177e4 | 2708 | }; |
136f2627 TM |
2709 | int status = -ENOMEM; |
2710 | ||
2711 | res.fattr = nfs_alloc_fattr(); | |
2712 | res.dir_attr = nfs_alloc_fattr(); | |
2713 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2714 | goto out; | |
1da177e4 | 2715 | |
cccef3b9 | 2716 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
91ba2eee TM |
2717 | if (!status) { |
2718 | update_changeattr(dir, &res.cinfo); | |
2719 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2720 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2721 | } |
136f2627 TM |
2722 | out: |
2723 | nfs_free_fattr(res.dir_attr); | |
2724 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2725 | return status; |
2726 | } | |
2727 | ||
2728 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2729 | { | |
2730 | struct nfs4_exception exception = { }; | |
2731 | int err; | |
2732 | do { | |
2733 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2734 | _nfs4_proc_link(inode, dir, name), | |
2735 | &exception); | |
2736 | } while (exception.retry); | |
2737 | return err; | |
2738 | } | |
2739 | ||
57dc9a57 TM |
2740 | struct nfs4_createdata { |
2741 | struct rpc_message msg; | |
2742 | struct nfs4_create_arg arg; | |
2743 | struct nfs4_create_res res; | |
2744 | struct nfs_fh fh; | |
2745 | struct nfs_fattr fattr; | |
2746 | struct nfs_fattr dir_fattr; | |
2747 | }; | |
2748 | ||
2749 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2750 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2751 | { | |
2752 | struct nfs4_createdata *data; | |
2753 | ||
2754 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2755 | if (data != NULL) { | |
2756 | struct nfs_server *server = NFS_SERVER(dir); | |
2757 | ||
2758 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2759 | data->msg.rpc_argp = &data->arg; | |
2760 | data->msg.rpc_resp = &data->res; | |
2761 | data->arg.dir_fh = NFS_FH(dir); | |
2762 | data->arg.server = server; | |
2763 | data->arg.name = name; | |
2764 | data->arg.attrs = sattr; | |
2765 | data->arg.ftype = ftype; | |
2766 | data->arg.bitmask = server->attr_bitmask; | |
2767 | data->res.server = server; | |
2768 | data->res.fh = &data->fh; | |
2769 | data->res.fattr = &data->fattr; | |
2770 | data->res.dir_fattr = &data->dir_fattr; | |
2771 | nfs_fattr_init(data->res.fattr); | |
2772 | nfs_fattr_init(data->res.dir_fattr); | |
2773 | } | |
2774 | return data; | |
2775 | } | |
2776 | ||
2777 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2778 | { | |
cccef3b9 AA |
2779 | int status = nfs4_call_sync(NFS_SERVER(dir), &data->msg, |
2780 | &data->arg, &data->res, 1); | |
57dc9a57 TM |
2781 | if (status == 0) { |
2782 | update_changeattr(dir, &data->res.dir_cinfo); | |
2783 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2784 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2785 | } | |
2786 | return status; | |
2787 | } | |
2788 | ||
2789 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2790 | { | |
2791 | kfree(data); | |
2792 | } | |
2793 | ||
4f390c15 | 2794 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2795 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2796 | { |
57dc9a57 TM |
2797 | struct nfs4_createdata *data; |
2798 | int status = -ENAMETOOLONG; | |
1da177e4 | 2799 | |
94a6d753 | 2800 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2801 | goto out; |
4f390c15 | 2802 | |
57dc9a57 TM |
2803 | status = -ENOMEM; |
2804 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2805 | if (data == NULL) | |
2806 | goto out; | |
2807 | ||
2808 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2809 | data->arg.u.symlink.pages = &page; | |
2810 | data->arg.u.symlink.len = len; | |
1da177e4 | 2811 | |
57dc9a57 TM |
2812 | status = nfs4_do_create(dir, dentry, data); |
2813 | ||
2814 | nfs4_free_createdata(data); | |
2815 | out: | |
1da177e4 LT |
2816 | return status; |
2817 | } | |
2818 | ||
4f390c15 | 2819 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2820 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2821 | { |
2822 | struct nfs4_exception exception = { }; | |
2823 | int err; | |
2824 | do { | |
2825 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2826 | _nfs4_proc_symlink(dir, dentry, page, |
2827 | len, sattr), | |
1da177e4 LT |
2828 | &exception); |
2829 | } while (exception.retry); | |
2830 | return err; | |
2831 | } | |
2832 | ||
2833 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2834 | struct iattr *sattr) | |
2835 | { | |
57dc9a57 TM |
2836 | struct nfs4_createdata *data; |
2837 | int status = -ENOMEM; | |
1da177e4 | 2838 | |
57dc9a57 TM |
2839 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2840 | if (data == NULL) | |
2841 | goto out; | |
2842 | ||
2843 | status = nfs4_do_create(dir, dentry, data); | |
2844 | ||
2845 | nfs4_free_createdata(data); | |
2846 | out: | |
1da177e4 LT |
2847 | return status; |
2848 | } | |
2849 | ||
2850 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2851 | struct iattr *sattr) | |
2852 | { | |
2853 | struct nfs4_exception exception = { }; | |
2854 | int err; | |
a8a5da99 AK |
2855 | |
2856 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2857 | do { |
2858 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2859 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2860 | &exception); | |
2861 | } while (exception.retry); | |
2862 | return err; | |
2863 | } | |
2864 | ||
2865 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2866 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2867 | { |
2868 | struct inode *dir = dentry->d_inode; | |
2869 | struct nfs4_readdir_arg args = { | |
2870 | .fh = NFS_FH(dir), | |
56e4ebf8 | 2871 | .pages = pages, |
1da177e4 LT |
2872 | .pgbase = 0, |
2873 | .count = count, | |
96d25e53 | 2874 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 2875 | .plus = plus, |
1da177e4 LT |
2876 | }; |
2877 | struct nfs4_readdir_res res; | |
2878 | struct rpc_message msg = { | |
2879 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2880 | .rpc_argp = &args, | |
2881 | .rpc_resp = &res, | |
2882 | .rpc_cred = cred, | |
2883 | }; | |
2884 | int status; | |
2885 | ||
3110ff80 | 2886 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2887 | dentry->d_parent->d_name.name, |
2888 | dentry->d_name.name, | |
2889 | (unsigned long long)cookie); | |
1da177e4 LT |
2890 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2891 | res.pgbase = args.pgbase; | |
cccef3b9 | 2892 | status = nfs4_call_sync(NFS_SERVER(dir), &msg, &args, &res, 0); |
ac396128 | 2893 | if (status >= 0) { |
1da177e4 | 2894 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
2895 | status += args.pgbase; |
2896 | } | |
c4812998 TM |
2897 | |
2898 | nfs_invalidate_atime(dir); | |
2899 | ||
3110ff80 | 2900 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
2901 | return status; |
2902 | } | |
2903 | ||
2904 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2905 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2906 | { |
2907 | struct nfs4_exception exception = { }; | |
2908 | int err; | |
2909 | do { | |
2910 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2911 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 2912 | pages, count, plus), |
1da177e4 LT |
2913 | &exception); |
2914 | } while (exception.retry); | |
2915 | return err; | |
2916 | } | |
2917 | ||
2918 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2919 | struct iattr *sattr, dev_t rdev) | |
2920 | { | |
57dc9a57 TM |
2921 | struct nfs4_createdata *data; |
2922 | int mode = sattr->ia_mode; | |
2923 | int status = -ENOMEM; | |
1da177e4 LT |
2924 | |
2925 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2926 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
2927 | |
2928 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
2929 | if (data == NULL) | |
2930 | goto out; | |
2931 | ||
1da177e4 | 2932 | if (S_ISFIFO(mode)) |
57dc9a57 | 2933 | data->arg.ftype = NF4FIFO; |
1da177e4 | 2934 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
2935 | data->arg.ftype = NF4BLK; |
2936 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2937 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
2938 | } |
2939 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
2940 | data->arg.ftype = NF4CHR; |
2941 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2942 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 2943 | } |
1da177e4 | 2944 | |
57dc9a57 TM |
2945 | status = nfs4_do_create(dir, dentry, data); |
2946 | ||
2947 | nfs4_free_createdata(data); | |
2948 | out: | |
1da177e4 LT |
2949 | return status; |
2950 | } | |
2951 | ||
2952 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2953 | struct iattr *sattr, dev_t rdev) | |
2954 | { | |
2955 | struct nfs4_exception exception = { }; | |
2956 | int err; | |
a8a5da99 AK |
2957 | |
2958 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2959 | do { |
2960 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2961 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2962 | &exception); | |
2963 | } while (exception.retry); | |
2964 | return err; | |
2965 | } | |
2966 | ||
2967 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2968 | struct nfs_fsstat *fsstat) | |
2969 | { | |
2970 | struct nfs4_statfs_arg args = { | |
2971 | .fh = fhandle, | |
2972 | .bitmask = server->attr_bitmask, | |
2973 | }; | |
24ad148a BH |
2974 | struct nfs4_statfs_res res = { |
2975 | .fsstat = fsstat, | |
2976 | }; | |
1da177e4 LT |
2977 | struct rpc_message msg = { |
2978 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2979 | .rpc_argp = &args, | |
24ad148a | 2980 | .rpc_resp = &res, |
1da177e4 LT |
2981 | }; |
2982 | ||
0e574af1 | 2983 | nfs_fattr_init(fsstat->fattr); |
cccef3b9 | 2984 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2985 | } |
2986 | ||
2987 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
2988 | { | |
2989 | struct nfs4_exception exception = { }; | |
2990 | int err; | |
2991 | do { | |
2992 | err = nfs4_handle_exception(server, | |
2993 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
2994 | &exception); | |
2995 | } while (exception.retry); | |
2996 | return err; | |
2997 | } | |
2998 | ||
2999 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3000 | struct nfs_fsinfo *fsinfo) | |
3001 | { | |
3002 | struct nfs4_fsinfo_arg args = { | |
3003 | .fh = fhandle, | |
3004 | .bitmask = server->attr_bitmask, | |
3005 | }; | |
3dda5e43 BH |
3006 | struct nfs4_fsinfo_res res = { |
3007 | .fsinfo = fsinfo, | |
3008 | }; | |
1da177e4 LT |
3009 | struct rpc_message msg = { |
3010 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3011 | .rpc_argp = &args, | |
3dda5e43 | 3012 | .rpc_resp = &res, |
1da177e4 LT |
3013 | }; |
3014 | ||
cccef3b9 | 3015 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
3016 | } |
3017 | ||
3018 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3019 | { | |
3020 | struct nfs4_exception exception = { }; | |
3021 | int err; | |
3022 | ||
3023 | do { | |
3024 | err = nfs4_handle_exception(server, | |
3025 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3026 | &exception); | |
3027 | } while (exception.retry); | |
3028 | return err; | |
3029 | } | |
3030 | ||
3031 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3032 | { | |
0e574af1 | 3033 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3034 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3035 | } | |
3036 | ||
3037 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3038 | struct nfs_pathconf *pathconf) | |
3039 | { | |
3040 | struct nfs4_pathconf_arg args = { | |
3041 | .fh = fhandle, | |
3042 | .bitmask = server->attr_bitmask, | |
3043 | }; | |
d45b2989 BH |
3044 | struct nfs4_pathconf_res res = { |
3045 | .pathconf = pathconf, | |
3046 | }; | |
1da177e4 LT |
3047 | struct rpc_message msg = { |
3048 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3049 | .rpc_argp = &args, | |
d45b2989 | 3050 | .rpc_resp = &res, |
1da177e4 LT |
3051 | }; |
3052 | ||
3053 | /* None of the pathconf attributes are mandatory to implement */ | |
3054 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3055 | memset(pathconf, 0, sizeof(*pathconf)); | |
3056 | return 0; | |
3057 | } | |
3058 | ||
0e574af1 | 3059 | nfs_fattr_init(pathconf->fattr); |
cccef3b9 | 3060 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
3061 | } |
3062 | ||
3063 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3064 | struct nfs_pathconf *pathconf) | |
3065 | { | |
3066 | struct nfs4_exception exception = { }; | |
3067 | int err; | |
3068 | ||
3069 | do { | |
3070 | err = nfs4_handle_exception(server, | |
3071 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3072 | &exception); | |
3073 | } while (exception.retry); | |
3074 | return err; | |
3075 | } | |
3076 | ||
ec06c096 | 3077 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3078 | { |
ec06c096 | 3079 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3080 | |
f11c88af AA |
3081 | dprintk("--> %s\n", __func__); |
3082 | ||
14516c3a TM |
3083 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3084 | return -EAGAIN; | |
f11c88af | 3085 | |
9e33bed5 | 3086 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
0110ee15 | 3087 | nfs_restart_rpc(task, server->nfs_client); |
ec06c096 | 3088 | return -EAGAIN; |
1da177e4 | 3089 | } |
8850df99 TM |
3090 | |
3091 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 3092 | if (task->tk_status > 0) |
ec06c096 TM |
3093 | renew_lease(server, data->timestamp); |
3094 | return 0; | |
1da177e4 LT |
3095 | } |
3096 | ||
bdc7f021 | 3097 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3098 | { |
1da177e4 | 3099 | data->timestamp = jiffies; |
bdc7f021 | 3100 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3101 | } |
3102 | ||
788e7a89 | 3103 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3104 | { |
1da177e4 LT |
3105 | struct inode *inode = data->inode; |
3106 | ||
14516c3a TM |
3107 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3108 | return -EAGAIN; | |
def6ed7e | 3109 | |
9e33bed5 | 3110 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
0110ee15 | 3111 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3112 | return -EAGAIN; |
1da177e4 | 3113 | } |
4f9838c7 | 3114 | if (task->tk_status >= 0) { |
1da177e4 | 3115 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3116 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3117 | } |
788e7a89 | 3118 | return 0; |
1da177e4 LT |
3119 | } |
3120 | ||
bdc7f021 | 3121 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3122 | { |
bdc7f021 TM |
3123 | struct nfs_server *server = NFS_SERVER(data->inode); |
3124 | ||
a65318bf | 3125 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3126 | data->res.server = server; |
1da177e4 LT |
3127 | data->timestamp = jiffies; |
3128 | ||
bdc7f021 | 3129 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3130 | } |
3131 | ||
788e7a89 | 3132 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3133 | { |
1da177e4 LT |
3134 | struct inode *inode = data->inode; |
3135 | ||
14516c3a TM |
3136 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3137 | return -EAGAIN; | |
3138 | ||
9e33bed5 | 3139 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
0110ee15 | 3140 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3141 | return -EAGAIN; |
1da177e4 | 3142 | } |
9e08a3c5 | 3143 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3144 | return 0; |
1da177e4 LT |
3145 | } |
3146 | ||
bdc7f021 | 3147 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3148 | { |
788e7a89 | 3149 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3150 | |
a65318bf | 3151 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3152 | data->res.server = server; |
bdc7f021 | 3153 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3154 | } |
3155 | ||
9bc4e3ca CL |
3156 | struct nfs4_renewdata { |
3157 | struct nfs_client *client; | |
3158 | unsigned long timestamp; | |
3159 | }; | |
3160 | ||
1da177e4 LT |
3161 | /* |
3162 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3163 | * standalone procedure for queueing an asynchronous RENEW. | |
3164 | */ | |
9bc4e3ca | 3165 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3166 | { |
9bc4e3ca CL |
3167 | struct nfs4_renewdata *data = calldata; |
3168 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3169 | |
0851de06 AB |
3170 | if (atomic_read(&clp->cl_count) > 1) |
3171 | nfs4_schedule_state_renewal(clp); | |
3172 | nfs_put_client(clp); | |
9bc4e3ca | 3173 | kfree(data); |
dc96aef9 AB |
3174 | } |
3175 | ||
9bc4e3ca | 3176 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3177 | { |
9bc4e3ca CL |
3178 | struct nfs4_renewdata *data = calldata; |
3179 | struct nfs_client *clp = data->client; | |
3180 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3181 | |
3182 | if (task->tk_status < 0) { | |
95baa25c TM |
3183 | /* Unless we're shutting down, schedule state recovery! */ |
3184 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0) | |
0400a6b0 | 3185 | nfs4_schedule_lease_recovery(clp); |
1da177e4 LT |
3186 | return; |
3187 | } | |
452e9352 | 3188 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3189 | } |
3190 | ||
963d8fe5 TM |
3191 | static const struct rpc_call_ops nfs4_renew_ops = { |
3192 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3193 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3194 | }; |
3195 | ||
adfa6f98 | 3196 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3197 | { |
3198 | struct rpc_message msg = { | |
3199 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3200 | .rpc_argp = clp, | |
b4454fe1 | 3201 | .rpc_cred = cred, |
1da177e4 | 3202 | }; |
9bc4e3ca | 3203 | struct nfs4_renewdata *data; |
1da177e4 | 3204 | |
0851de06 AB |
3205 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3206 | return -EIO; | |
9bc4e3ca CL |
3207 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
3208 | if (data == NULL) | |
3209 | return -ENOMEM; | |
3210 | data->client = clp; | |
3211 | data->timestamp = jiffies; | |
1da177e4 | 3212 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3213 | &nfs4_renew_ops, data); |
1da177e4 LT |
3214 | } |
3215 | ||
adfa6f98 | 3216 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3217 | { |
3218 | struct rpc_message msg = { | |
3219 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3220 | .rpc_argp = clp, | |
b4454fe1 | 3221 | .rpc_cred = cred, |
1da177e4 LT |
3222 | }; |
3223 | unsigned long now = jiffies; | |
3224 | int status; | |
3225 | ||
3226 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3227 | if (status < 0) | |
3228 | return status; | |
452e9352 | 3229 | do_renew_lease(clp, now); |
1da177e4 LT |
3230 | return 0; |
3231 | } | |
3232 | ||
aa1870af BF |
3233 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3234 | { | |
3235 | return (server->caps & NFS_CAP_ACLS) | |
3236 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3237 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3238 | } | |
3239 | ||
3240 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3241 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3242 | * the stack. | |
3243 | */ | |
3244 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3245 | ||
3246 | static void buf_to_pages(const void *buf, size_t buflen, | |
3247 | struct page **pages, unsigned int *pgbase) | |
3248 | { | |
3249 | const void *p = buf; | |
3250 | ||
3251 | *pgbase = offset_in_page(buf); | |
3252 | p -= *pgbase; | |
3253 | while (p < buf + buflen) { | |
3254 | *(pages++) = virt_to_page(p); | |
3255 | p += PAGE_CACHE_SIZE; | |
3256 | } | |
3257 | } | |
3258 | ||
e9e3d724 NH |
3259 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3260 | struct page **pages, unsigned int *pgbase) | |
3261 | { | |
3262 | struct page *newpage, **spages; | |
3263 | int rc = 0; | |
3264 | size_t len; | |
3265 | spages = pages; | |
3266 | ||
3267 | do { | |
43b7c3f0 | 3268 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3269 | newpage = alloc_page(GFP_KERNEL); |
3270 | ||
3271 | if (newpage == NULL) | |
3272 | goto unwind; | |
3273 | memcpy(page_address(newpage), buf, len); | |
3274 | buf += len; | |
3275 | buflen -= len; | |
3276 | *pages++ = newpage; | |
3277 | rc++; | |
3278 | } while (buflen != 0); | |
3279 | ||
3280 | return rc; | |
3281 | ||
3282 | unwind: | |
3283 | for(; rc > 0; rc--) | |
3284 | __free_page(spages[rc-1]); | |
3285 | return -ENOMEM; | |
3286 | } | |
3287 | ||
e50a1c2e BF |
3288 | struct nfs4_cached_acl { |
3289 | int cached; | |
3290 | size_t len; | |
3e9d4154 | 3291 | char data[0]; |
e50a1c2e BF |
3292 | }; |
3293 | ||
3294 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3295 | { | |
3296 | struct nfs_inode *nfsi = NFS_I(inode); | |
3297 | ||
3298 | spin_lock(&inode->i_lock); | |
3299 | kfree(nfsi->nfs4_acl); | |
3300 | nfsi->nfs4_acl = acl; | |
3301 | spin_unlock(&inode->i_lock); | |
3302 | } | |
3303 | ||
3304 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3305 | { | |
3306 | nfs4_set_cached_acl(inode, NULL); | |
3307 | } | |
3308 | ||
3309 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3310 | { | |
3311 | struct nfs_inode *nfsi = NFS_I(inode); | |
3312 | struct nfs4_cached_acl *acl; | |
3313 | int ret = -ENOENT; | |
3314 | ||
3315 | spin_lock(&inode->i_lock); | |
3316 | acl = nfsi->nfs4_acl; | |
3317 | if (acl == NULL) | |
3318 | goto out; | |
3319 | if (buf == NULL) /* user is just asking for length */ | |
3320 | goto out_len; | |
3321 | if (acl->cached == 0) | |
3322 | goto out; | |
3323 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3324 | if (acl->len > buflen) | |
3325 | goto out; | |
3326 | memcpy(buf, acl->data, acl->len); | |
3327 | out_len: | |
3328 | ret = acl->len; | |
3329 | out: | |
3330 | spin_unlock(&inode->i_lock); | |
3331 | return ret; | |
3332 | } | |
3333 | ||
3334 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3335 | { | |
3336 | struct nfs4_cached_acl *acl; | |
3337 | ||
3338 | if (buf && acl_len <= PAGE_SIZE) { | |
3339 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3340 | if (acl == NULL) | |
3341 | goto out; | |
3342 | acl->cached = 1; | |
3343 | memcpy(acl->data, buf, acl_len); | |
3344 | } else { | |
3345 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3346 | if (acl == NULL) | |
3347 | goto out; | |
3348 | acl->cached = 0; | |
3349 | } | |
3350 | acl->len = acl_len; | |
3351 | out: | |
3352 | nfs4_set_cached_acl(inode, acl); | |
3353 | } | |
3354 | ||
16b4289c | 3355 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3356 | { |
aa1870af BF |
3357 | struct page *pages[NFS4ACL_MAXPAGES]; |
3358 | struct nfs_getaclargs args = { | |
3359 | .fh = NFS_FH(inode), | |
3360 | .acl_pages = pages, | |
3361 | .acl_len = buflen, | |
3362 | }; | |
663c79b3 BH |
3363 | struct nfs_getaclres res = { |
3364 | .acl_len = buflen, | |
3365 | }; | |
e50a1c2e | 3366 | void *resp_buf; |
aa1870af BF |
3367 | struct rpc_message msg = { |
3368 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3369 | .rpc_argp = &args, | |
663c79b3 | 3370 | .rpc_resp = &res, |
aa1870af | 3371 | }; |
e50a1c2e | 3372 | struct page *localpage = NULL; |
aa1870af BF |
3373 | int ret; |
3374 | ||
e50a1c2e BF |
3375 | if (buflen < PAGE_SIZE) { |
3376 | /* As long as we're doing a round trip to the server anyway, | |
3377 | * let's be prepared for a page of acl data. */ | |
3378 | localpage = alloc_page(GFP_KERNEL); | |
3379 | resp_buf = page_address(localpage); | |
3380 | if (localpage == NULL) | |
3381 | return -ENOMEM; | |
3382 | args.acl_pages[0] = localpage; | |
3383 | args.acl_pgbase = 0; | |
663c79b3 | 3384 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3385 | } else { |
3386 | resp_buf = buf; | |
3387 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3388 | } | |
cccef3b9 | 3389 | ret = nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
e50a1c2e BF |
3390 | if (ret) |
3391 | goto out_free; | |
663c79b3 BH |
3392 | if (res.acl_len > args.acl_len) |
3393 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3394 | else |
663c79b3 | 3395 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3396 | if (buf) { |
3397 | ret = -ERANGE; | |
663c79b3 | 3398 | if (res.acl_len > buflen) |
e50a1c2e BF |
3399 | goto out_free; |
3400 | if (localpage) | |
663c79b3 | 3401 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3402 | } |
663c79b3 | 3403 | ret = res.acl_len; |
e50a1c2e BF |
3404 | out_free: |
3405 | if (localpage) | |
3406 | __free_page(localpage); | |
aa1870af BF |
3407 | return ret; |
3408 | } | |
3409 | ||
16b4289c TM |
3410 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3411 | { | |
3412 | struct nfs4_exception exception = { }; | |
3413 | ssize_t ret; | |
3414 | do { | |
3415 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3416 | if (ret >= 0) | |
3417 | break; | |
3418 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3419 | } while (exception.retry); | |
3420 | return ret; | |
3421 | } | |
3422 | ||
e50a1c2e BF |
3423 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3424 | { | |
3425 | struct nfs_server *server = NFS_SERVER(inode); | |
3426 | int ret; | |
3427 | ||
3428 | if (!nfs4_server_supports_acls(server)) | |
3429 | return -EOPNOTSUPP; | |
3430 | ret = nfs_revalidate_inode(server, inode); | |
3431 | if (ret < 0) | |
3432 | return ret; | |
08a22b39 AK |
3433 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3434 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3435 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3436 | if (ret != -ENOENT) | |
3437 | return ret; | |
3438 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3439 | } | |
3440 | ||
16b4289c | 3441 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3442 | { |
3443 | struct nfs_server *server = NFS_SERVER(inode); | |
3444 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3445 | struct nfs_setaclargs arg = { | |
3446 | .fh = NFS_FH(inode), | |
3447 | .acl_pages = pages, | |
3448 | .acl_len = buflen, | |
3449 | }; | |
73c403a9 | 3450 | struct nfs_setaclres res; |
4b580ee3 BF |
3451 | struct rpc_message msg = { |
3452 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3453 | .rpc_argp = &arg, | |
73c403a9 | 3454 | .rpc_resp = &res, |
4b580ee3 | 3455 | }; |
e9e3d724 | 3456 | int ret, i; |
4b580ee3 BF |
3457 | |
3458 | if (!nfs4_server_supports_acls(server)) | |
3459 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3460 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3461 | if (i < 0) | |
3462 | return i; | |
642ac549 | 3463 | nfs_inode_return_delegation(inode); |
cccef3b9 | 3464 | ret = nfs4_call_sync(server, &msg, &arg, &res, 1); |
e9e3d724 NH |
3465 | |
3466 | /* | |
3467 | * Free each page after tx, so the only ref left is | |
3468 | * held by the network stack | |
3469 | */ | |
3470 | for (; i > 0; i--) | |
3471 | put_page(pages[i-1]); | |
3472 | ||
08a22b39 AK |
3473 | /* |
3474 | * Acl update can result in inode attribute update. | |
3475 | * so mark the attribute cache invalid. | |
3476 | */ | |
3477 | spin_lock(&inode->i_lock); | |
3478 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3479 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3480 | nfs_access_zap_cache(inode); |
3481 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3482 | return ret; |
3483 | } | |
3484 | ||
16b4289c TM |
3485 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3486 | { | |
3487 | struct nfs4_exception exception = { }; | |
3488 | int err; | |
3489 | do { | |
3490 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3491 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3492 | &exception); | |
3493 | } while (exception.retry); | |
3494 | return err; | |
3495 | } | |
3496 | ||
1da177e4 | 3497 | static int |
aa5190d0 | 3498 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3499 | { |
aa5190d0 TM |
3500 | struct nfs_client *clp = server->nfs_client; |
3501 | ||
3502 | if (task->tk_status >= 0) | |
1da177e4 LT |
3503 | return 0; |
3504 | switch(task->tk_status) { | |
9e33bed5 TM |
3505 | case -NFS4ERR_ADMIN_REVOKED: |
3506 | case -NFS4ERR_BAD_STATEID: | |
3507 | case -NFS4ERR_OPENMODE: | |
3508 | if (state == NULL) | |
3509 | break; | |
0400a6b0 TM |
3510 | nfs4_schedule_stateid_recovery(server, state); |
3511 | goto wait_on_recovery; | |
1da177e4 | 3512 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3513 | case -NFS4ERR_STALE_CLIENTID: |
1da177e4 | 3514 | case -NFS4ERR_EXPIRED: |
0400a6b0 TM |
3515 | nfs4_schedule_lease_recovery(clp); |
3516 | goto wait_on_recovery; | |
4745e315 AA |
3517 | #if defined(CONFIG_NFS_V4_1) |
3518 | case -NFS4ERR_BADSESSION: | |
3519 | case -NFS4ERR_BADSLOT: | |
3520 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3521 | case -NFS4ERR_DEADSESSION: | |
3522 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3523 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3524 | case -NFS4ERR_SEQ_MISORDERED: | |
3525 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3526 | task->tk_status); | |
0400a6b0 | 3527 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3528 | task->tk_status = 0; |
3529 | return -EAGAIN; | |
3530 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3531 | case -NFS4ERR_DELAY: |
aa5190d0 | 3532 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3533 | case -NFS4ERR_GRACE: |
2c643488 | 3534 | case -EKEYEXPIRED: |
1da177e4 LT |
3535 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3536 | task->tk_status = 0; | |
3537 | return -EAGAIN; | |
3538 | case -NFS4ERR_OLD_STATEID: | |
3539 | task->tk_status = 0; | |
3540 | return -EAGAIN; | |
3541 | } | |
3542 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3543 | return 0; | |
0400a6b0 | 3544 | wait_on_recovery: |
a2c0b9e2 | 3545 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3546 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3547 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3548 | task->tk_status = 0; | |
3549 | return -EAGAIN; | |
1da177e4 LT |
3550 | } |
3551 | ||
bb8b27e5 TM |
3552 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3553 | unsigned short port, struct rpc_cred *cred, | |
3554 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3555 | { |
3556 | nfs4_verifier sc_verifier; | |
3557 | struct nfs4_setclientid setclientid = { | |
3558 | .sc_verifier = &sc_verifier, | |
3559 | .sc_prog = program, | |
f4eecd5d | 3560 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3561 | }; |
3562 | struct rpc_message msg = { | |
3563 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3564 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3565 | .rpc_resp = res, |
286d7d6a | 3566 | .rpc_cred = cred, |
1da177e4 | 3567 | }; |
bc4785cd | 3568 | __be32 *p; |
1da177e4 LT |
3569 | int loop = 0; |
3570 | int status; | |
3571 | ||
bc4785cd | 3572 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3573 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3574 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3575 | ||
3576 | for(;;) { | |
3577 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3578 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3579 | clp->cl_ipaddr, |
3580 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3581 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3582 | rpc_peeraddr2str(clp->cl_rpcclient, |
3583 | RPC_DISPLAY_PROTO), | |
78ea323b | 3584 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3585 | clp->cl_id_uniquifier); |
3586 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3587 | sizeof(setclientid.sc_netid), |
3588 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3589 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3590 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3591 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3592 | clp->cl_ipaddr, port >> 8, port & 255); |
3593 | ||
3594 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3595 | if (status != -NFS4ERR_CLID_INUSE) | |
3596 | break; | |
3597 | if (signalled()) | |
3598 | break; | |
3599 | if (loop++ & 1) | |
611c96c8 | 3600 | ssleep(clp->cl_lease_time / HZ + 1); |
1da177e4 LT |
3601 | else |
3602 | if (++clp->cl_id_uniquifier == 0) | |
3603 | break; | |
3604 | } | |
3605 | return status; | |
3606 | } | |
3607 | ||
bb8b27e5 TM |
3608 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
3609 | struct nfs4_setclientid_res *arg, | |
3610 | struct rpc_cred *cred) | |
1da177e4 LT |
3611 | { |
3612 | struct nfs_fsinfo fsinfo; | |
3613 | struct rpc_message msg = { | |
3614 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3615 | .rpc_argp = arg, |
1da177e4 | 3616 | .rpc_resp = &fsinfo, |
286d7d6a | 3617 | .rpc_cred = cred, |
1da177e4 LT |
3618 | }; |
3619 | unsigned long now; | |
3620 | int status; | |
3621 | ||
3622 | now = jiffies; | |
3623 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3624 | if (status == 0) { | |
3625 | spin_lock(&clp->cl_lock); | |
3626 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3627 | clp->cl_last_renewal = now; | |
3628 | spin_unlock(&clp->cl_lock); | |
3629 | } | |
3630 | return status; | |
3631 | } | |
3632 | ||
bb8b27e5 TM |
3633 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
3634 | struct nfs4_setclientid_res *arg, | |
3635 | struct rpc_cred *cred) | |
51581f3b | 3636 | { |
77e03677 | 3637 | long timeout = 0; |
51581f3b TM |
3638 | int err; |
3639 | do { | |
bb8b27e5 | 3640 | err = _nfs4_proc_setclientid_confirm(clp, arg, cred); |
51581f3b TM |
3641 | switch (err) { |
3642 | case 0: | |
3643 | return err; | |
3644 | case -NFS4ERR_RESOURCE: | |
3645 | /* The IBM lawyers misread another document! */ | |
3646 | case -NFS4ERR_DELAY: | |
3647 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
3648 | } | |
3649 | } while (err == 0); | |
3650 | return err; | |
3651 | } | |
3652 | ||
fe650407 TM |
3653 | struct nfs4_delegreturndata { |
3654 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3655 | struct nfs4_delegreturnres res; |
fe650407 TM |
3656 | struct nfs_fh fh; |
3657 | nfs4_stateid stateid; | |
26e976a8 | 3658 | unsigned long timestamp; |
fa178f29 | 3659 | struct nfs_fattr fattr; |
fe650407 TM |
3660 | int rpc_status; |
3661 | }; | |
3662 | ||
fe650407 TM |
3663 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3664 | { | |
3665 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3666 | |
14516c3a TM |
3667 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3668 | return; | |
938e1010 | 3669 | |
79708861 RL |
3670 | switch (task->tk_status) { |
3671 | case -NFS4ERR_STALE_STATEID: | |
3672 | case -NFS4ERR_EXPIRED: | |
3673 | case 0: | |
fa178f29 | 3674 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3675 | break; |
3676 | default: | |
3677 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3678 | -EAGAIN) { | |
3679 | nfs_restart_rpc(task, data->res.server->nfs_client); | |
3680 | return; | |
3681 | } | |
3682 | } | |
3683 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3684 | } |
3685 | ||
3686 | static void nfs4_delegreturn_release(void *calldata) | |
3687 | { | |
fe650407 TM |
3688 | kfree(calldata); |
3689 | } | |
3690 | ||
938e1010 AA |
3691 | #if defined(CONFIG_NFS_V4_1) |
3692 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3693 | { | |
3694 | struct nfs4_delegreturndata *d_data; | |
3695 | ||
3696 | d_data = (struct nfs4_delegreturndata *)data; | |
3697 | ||
035168ab | 3698 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 AA |
3699 | &d_data->args.seq_args, |
3700 | &d_data->res.seq_res, 1, task)) | |
3701 | return; | |
3702 | rpc_call_start(task); | |
3703 | } | |
3704 | #endif /* CONFIG_NFS_V4_1 */ | |
3705 | ||
c8d149f3 | 3706 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3707 | #if defined(CONFIG_NFS_V4_1) |
3708 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3709 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3710 | .rpc_call_done = nfs4_delegreturn_done, |
3711 | .rpc_release = nfs4_delegreturn_release, | |
3712 | }; | |
3713 | ||
e6f81075 | 3714 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3715 | { |
3716 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3717 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3718 | struct rpc_task *task; |
5138fde0 TM |
3719 | struct rpc_message msg = { |
3720 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3721 | .rpc_cred = cred, | |
3722 | }; | |
c970aa85 TM |
3723 | struct rpc_task_setup task_setup_data = { |
3724 | .rpc_client = server->client, | |
5138fde0 | 3725 | .rpc_message = &msg, |
c970aa85 TM |
3726 | .callback_ops = &nfs4_delegreturn_ops, |
3727 | .flags = RPC_TASK_ASYNC, | |
3728 | }; | |
e6f81075 | 3729 | int status = 0; |
fe650407 | 3730 | |
8535b2be | 3731 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3732 | if (data == NULL) |
3733 | return -ENOMEM; | |
3734 | data->args.fhandle = &data->fh; | |
3735 | data->args.stateid = &data->stateid; | |
fa178f29 | 3736 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3737 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3738 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3739 | data->res.fattr = &data->fattr; |
3740 | data->res.server = server; | |
5138fde0 | 3741 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3742 | data->timestamp = jiffies; |
fe650407 TM |
3743 | data->rpc_status = 0; |
3744 | ||
c970aa85 | 3745 | task_setup_data.callback_data = data; |
1174dd1f TM |
3746 | msg.rpc_argp = &data->args; |
3747 | msg.rpc_resp = &data->res; | |
c970aa85 | 3748 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3749 | if (IS_ERR(task)) |
fe650407 | 3750 | return PTR_ERR(task); |
e6f81075 TM |
3751 | if (!issync) |
3752 | goto out; | |
fe650407 | 3753 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3754 | if (status != 0) |
3755 | goto out; | |
3756 | status = data->rpc_status; | |
3757 | if (status != 0) | |
3758 | goto out; | |
3759 | nfs_refresh_inode(inode, &data->fattr); | |
3760 | out: | |
e6b3c4db | 3761 | rpc_put_task(task); |
fe650407 | 3762 | return status; |
1da177e4 LT |
3763 | } |
3764 | ||
e6f81075 | 3765 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3766 | { |
3767 | struct nfs_server *server = NFS_SERVER(inode); | |
3768 | struct nfs4_exception exception = { }; | |
3769 | int err; | |
3770 | do { | |
e6f81075 | 3771 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3772 | switch (err) { |
3773 | case -NFS4ERR_STALE_STATEID: | |
3774 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3775 | case 0: |
3776 | return 0; | |
3777 | } | |
3778 | err = nfs4_handle_exception(server, err, &exception); | |
3779 | } while (exception.retry); | |
3780 | return err; | |
3781 | } | |
3782 | ||
3783 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3784 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3785 | ||
3786 | /* | |
3787 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3788 | */ | |
3789 | static unsigned long | |
3790 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3791 | { | |
150030b7 | 3792 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3793 | timeout <<= 1; |
3794 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3795 | return NFS4_LOCK_MAXTIMEOUT; | |
3796 | return timeout; | |
3797 | } | |
3798 | ||
1da177e4 LT |
3799 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3800 | { | |
3801 | struct inode *inode = state->inode; | |
3802 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3803 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3804 | struct nfs_lockt_args arg = { |
1da177e4 | 3805 | .fh = NFS_FH(inode), |
911d1aaf | 3806 | .fl = request, |
1da177e4 | 3807 | }; |
911d1aaf TM |
3808 | struct nfs_lockt_res res = { |
3809 | .denied = request, | |
1da177e4 LT |
3810 | }; |
3811 | struct rpc_message msg = { | |
3812 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3813 | .rpc_argp = &arg, | |
3814 | .rpc_resp = &res, | |
3815 | .rpc_cred = state->owner->so_cred, | |
3816 | }; | |
1da177e4 LT |
3817 | struct nfs4_lock_state *lsp; |
3818 | int status; | |
3819 | ||
911d1aaf | 3820 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3821 | status = nfs4_set_lock_state(state, request); |
3822 | if (status != 0) | |
3823 | goto out; | |
3824 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3825 | arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 3826 | arg.lock_owner.s_dev = server->s_dev; |
cccef3b9 | 3827 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
911d1aaf TM |
3828 | switch (status) { |
3829 | case 0: | |
3830 | request->fl_type = F_UNLCK; | |
3831 | break; | |
3832 | case -NFS4ERR_DENIED: | |
3833 | status = 0; | |
1da177e4 | 3834 | } |
70cc6487 | 3835 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3836 | out: |
1da177e4 LT |
3837 | return status; |
3838 | } | |
3839 | ||
3840 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3841 | { | |
3842 | struct nfs4_exception exception = { }; | |
3843 | int err; | |
3844 | ||
3845 | do { | |
3846 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3847 | _nfs4_proc_getlk(state, cmd, request), | |
3848 | &exception); | |
3849 | } while (exception.retry); | |
3850 | return err; | |
3851 | } | |
3852 | ||
3853 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3854 | { | |
3855 | int res = 0; | |
3856 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3857 | case FL_POSIX: | |
3858 | res = posix_lock_file_wait(file, fl); | |
3859 | break; | |
3860 | case FL_FLOCK: | |
3861 | res = flock_lock_file_wait(file, fl); | |
3862 | break; | |
3863 | default: | |
3864 | BUG(); | |
3865 | } | |
1da177e4 LT |
3866 | return res; |
3867 | } | |
3868 | ||
faf5f49c | 3869 | struct nfs4_unlockdata { |
911d1aaf TM |
3870 | struct nfs_locku_args arg; |
3871 | struct nfs_locku_res res; | |
faf5f49c TM |
3872 | struct nfs4_lock_state *lsp; |
3873 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3874 | struct file_lock fl; |
3875 | const struct nfs_server *server; | |
26e976a8 | 3876 | unsigned long timestamp; |
faf5f49c TM |
3877 | }; |
3878 | ||
911d1aaf TM |
3879 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3880 | struct nfs_open_context *ctx, | |
3881 | struct nfs4_lock_state *lsp, | |
3882 | struct nfs_seqid *seqid) | |
3883 | { | |
3884 | struct nfs4_unlockdata *p; | |
3885 | struct inode *inode = lsp->ls_state->inode; | |
3886 | ||
8535b2be | 3887 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
3888 | if (p == NULL) |
3889 | return NULL; | |
3890 | p->arg.fh = NFS_FH(inode); | |
3891 | p->arg.fl = &p->fl; | |
3892 | p->arg.seqid = seqid; | |
c1d51931 | 3893 | p->res.seqid = seqid; |
911d1aaf TM |
3894 | p->arg.stateid = &lsp->ls_stateid; |
3895 | p->lsp = lsp; | |
3896 | atomic_inc(&lsp->ls_count); | |
3897 | /* Ensure we don't close file until we're done freeing locks! */ | |
3898 | p->ctx = get_nfs_open_context(ctx); | |
3899 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3900 | p->server = NFS_SERVER(inode); | |
3901 | return p; | |
3902 | } | |
3903 | ||
06f814a3 | 3904 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3905 | { |
963d8fe5 | 3906 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3907 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3908 | nfs4_put_lock_state(calldata->lsp); |
3909 | put_nfs_open_context(calldata->ctx); | |
3910 | kfree(calldata); | |
faf5f49c TM |
3911 | } |
3912 | ||
963d8fe5 | 3913 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3914 | { |
963d8fe5 | 3915 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3916 | |
14516c3a TM |
3917 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
3918 | return; | |
faf5f49c TM |
3919 | switch (task->tk_status) { |
3920 | case 0: | |
3921 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3922 | calldata->res.stateid.data, |
faf5f49c | 3923 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3924 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 3925 | break; |
9e33bed5 TM |
3926 | case -NFS4ERR_BAD_STATEID: |
3927 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
3928 | case -NFS4ERR_STALE_STATEID: |
3929 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
3930 | break; |
3931 | default: | |
9e33bed5 | 3932 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
0110ee15 | 3933 | nfs_restart_rpc(task, |
d61e612a | 3934 | calldata->server->nfs_client); |
faf5f49c | 3935 | } |
faf5f49c TM |
3936 | } |
3937 | ||
4ce70ada | 3938 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 3939 | { |
4ce70ada | 3940 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3941 | |
911d1aaf | 3942 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
3943 | return; |
3944 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
3945 | /* Note: exit _without_ running nfs4_locku_done */ |
3946 | task->tk_action = NULL; | |
faf5f49c TM |
3947 | return; |
3948 | } | |
26e976a8 | 3949 | calldata->timestamp = jiffies; |
035168ab | 3950 | if (nfs4_setup_sequence(calldata->server, |
a893693c AA |
3951 | &calldata->arg.seq_args, |
3952 | &calldata->res.seq_res, 1, task)) | |
3953 | return; | |
5138fde0 | 3954 | rpc_call_start(task); |
faf5f49c TM |
3955 | } |
3956 | ||
963d8fe5 | 3957 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 3958 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 3959 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 3960 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
3961 | }; |
3962 | ||
a5d16a4d TM |
3963 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
3964 | struct nfs_open_context *ctx, | |
3965 | struct nfs4_lock_state *lsp, | |
3966 | struct nfs_seqid *seqid) | |
3967 | { | |
3968 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
3969 | struct rpc_message msg = { |
3970 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
3971 | .rpc_cred = ctx->cred, | |
3972 | }; | |
c970aa85 TM |
3973 | struct rpc_task_setup task_setup_data = { |
3974 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 3975 | .rpc_message = &msg, |
c970aa85 | 3976 | .callback_ops = &nfs4_locku_ops, |
101070ca | 3977 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3978 | .flags = RPC_TASK_ASYNC, |
3979 | }; | |
a5d16a4d | 3980 | |
137d6aca FF |
3981 | /* Ensure this is an unlock - when canceling a lock, the |
3982 | * canceled lock is passed in, and it won't be an unlock. | |
3983 | */ | |
3984 | fl->fl_type = F_UNLCK; | |
3985 | ||
a5d16a4d TM |
3986 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
3987 | if (data == NULL) { | |
3988 | nfs_free_seqid(seqid); | |
3989 | return ERR_PTR(-ENOMEM); | |
3990 | } | |
3991 | ||
1174dd1f TM |
3992 | msg.rpc_argp = &data->arg; |
3993 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
3994 | task_setup_data.callback_data = data; |
3995 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
3996 | } |
3997 | ||
faf5f49c TM |
3998 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
3999 | { | |
19e03c57 | 4000 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4001 | struct nfs_seqid *seqid; |
1da177e4 | 4002 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4003 | struct rpc_task *task; |
4004 | int status = 0; | |
536ff0f8 | 4005 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4006 | |
8d0a8a9d | 4007 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4008 | /* Unlock _before_ we do the RPC call */ |
4009 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4010 | down_read(&nfsi->rwsem); |
4011 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4012 | up_read(&nfsi->rwsem); | |
9b073574 | 4013 | goto out; |
19e03c57 TM |
4014 | } |
4015 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4016 | if (status != 0) |
9b073574 TM |
4017 | goto out; |
4018 | /* Is this a delegated lock? */ | |
4019 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4020 | goto out; | |
8d0a8a9d | 4021 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4022 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4023 | status = -ENOMEM; |
911d1aaf | 4024 | if (seqid == NULL) |
9b073574 | 4025 | goto out; |
cd3758e3 | 4026 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4027 | status = PTR_ERR(task); |
4028 | if (IS_ERR(task)) | |
9b073574 | 4029 | goto out; |
a5d16a4d | 4030 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4031 | rpc_put_task(task); |
9b073574 | 4032 | out: |
536ff0f8 | 4033 | request->fl_flags = fl_flags; |
1da177e4 LT |
4034 | return status; |
4035 | } | |
4036 | ||
a5d16a4d TM |
4037 | struct nfs4_lockdata { |
4038 | struct nfs_lock_args arg; | |
4039 | struct nfs_lock_res res; | |
4040 | struct nfs4_lock_state *lsp; | |
4041 | struct nfs_open_context *ctx; | |
4042 | struct file_lock fl; | |
26e976a8 | 4043 | unsigned long timestamp; |
a5d16a4d TM |
4044 | int rpc_status; |
4045 | int cancelled; | |
66179efe | 4046 | struct nfs_server *server; |
a5d16a4d TM |
4047 | }; |
4048 | ||
4049 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4050 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4051 | gfp_t gfp_mask) | |
1da177e4 | 4052 | { |
a5d16a4d TM |
4053 | struct nfs4_lockdata *p; |
4054 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4055 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4056 | |
8535b2be | 4057 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4058 | if (p == NULL) |
4059 | return NULL; | |
4060 | ||
4061 | p->arg.fh = NFS_FH(inode); | |
4062 | p->arg.fl = &p->fl; | |
8535b2be | 4063 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4064 | if (p->arg.open_seqid == NULL) |
4065 | goto out_free; | |
8535b2be | 4066 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4067 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4068 | goto out_free_seqid; |
a5d16a4d | 4069 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4070 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 4071 | p->arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 4072 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4073 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4074 | p->lsp = lsp; |
66179efe | 4075 | p->server = server; |
a5d16a4d TM |
4076 | atomic_inc(&lsp->ls_count); |
4077 | p->ctx = get_nfs_open_context(ctx); | |
4078 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4079 | return p; | |
2f74c0a0 TM |
4080 | out_free_seqid: |
4081 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4082 | out_free: |
4083 | kfree(p); | |
4084 | return NULL; | |
4085 | } | |
4086 | ||
4087 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4088 | { | |
4089 | struct nfs4_lockdata *data = calldata; | |
4090 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4091 | |
3110ff80 | 4092 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4093 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4094 | return; | |
a5d16a4d TM |
4095 | /* Do we need to do an open_to_lock_owner? */ |
4096 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4097 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4098 | return; | |
a5d16a4d TM |
4099 | data->arg.open_stateid = &state->stateid; |
4100 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4101 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4102 | } else |
4103 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4104 | data->timestamp = jiffies; |
035168ab TM |
4105 | if (nfs4_setup_sequence(data->server, |
4106 | &data->arg.seq_args, | |
66179efe AA |
4107 | &data->res.seq_res, 1, task)) |
4108 | return; | |
5138fde0 | 4109 | rpc_call_start(task); |
3110ff80 | 4110 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4111 | } |
4112 | ||
b257957e AB |
4113 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4114 | { | |
4115 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4116 | nfs4_lock_prepare(task, calldata); | |
4117 | } | |
4118 | ||
a5d16a4d TM |
4119 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4120 | { | |
4121 | struct nfs4_lockdata *data = calldata; | |
4122 | ||
3110ff80 | 4123 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4124 | |
14516c3a TM |
4125 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4126 | return; | |
66179efe | 4127 | |
a5d16a4d | 4128 | data->rpc_status = task->tk_status; |
a5d16a4d | 4129 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4130 | if (data->rpc_status == 0) |
4131 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4132 | else | |
4133 | goto out; | |
4134 | } | |
4135 | if (data->rpc_status == 0) { | |
4136 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4137 | sizeof(data->lsp->ls_stateid.data)); | |
4138 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 4139 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d | 4140 | } |
a5d16a4d | 4141 | out: |
3110ff80 | 4142 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4143 | } |
4144 | ||
4145 | static void nfs4_lock_release(void *calldata) | |
4146 | { | |
4147 | struct nfs4_lockdata *data = calldata; | |
4148 | ||
3110ff80 | 4149 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4150 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4151 | if (data->cancelled != 0) { |
4152 | struct rpc_task *task; | |
4153 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4154 | data->arg.lock_seqid); | |
4155 | if (!IS_ERR(task)) | |
bf294b41 | 4156 | rpc_put_task_async(task); |
3110ff80 | 4157 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4158 | } else |
4159 | nfs_free_seqid(data->arg.lock_seqid); | |
4160 | nfs4_put_lock_state(data->lsp); | |
4161 | put_nfs_open_context(data->ctx); | |
4162 | kfree(data); | |
3110ff80 | 4163 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4164 | } |
4165 | ||
4166 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4167 | .rpc_call_prepare = nfs4_lock_prepare, | |
4168 | .rpc_call_done = nfs4_lock_done, | |
4169 | .rpc_release = nfs4_lock_release, | |
4170 | }; | |
4171 | ||
b257957e AB |
4172 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4173 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4174 | .rpc_call_done = nfs4_lock_done, | |
4175 | .rpc_release = nfs4_lock_release, | |
4176 | }; | |
4177 | ||
2bee72a6 TM |
4178 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4179 | { | |
2bee72a6 TM |
4180 | switch (error) { |
4181 | case -NFS4ERR_ADMIN_REVOKED: | |
4182 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4183 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4184 | if (new_lock_owner != 0 || |
4185 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4186 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4187 | break; |
4188 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4189 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4190 | case -NFS4ERR_EXPIRED: |
4191 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4192 | }; |
4193 | } | |
4194 | ||
afe6c27c | 4195 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4196 | { |
4197 | struct nfs4_lockdata *data; | |
4198 | struct rpc_task *task; | |
5138fde0 TM |
4199 | struct rpc_message msg = { |
4200 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4201 | .rpc_cred = state->owner->so_cred, | |
4202 | }; | |
c970aa85 TM |
4203 | struct rpc_task_setup task_setup_data = { |
4204 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4205 | .rpc_message = &msg, |
c970aa85 | 4206 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4207 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4208 | .flags = RPC_TASK_ASYNC, |
4209 | }; | |
a5d16a4d TM |
4210 | int ret; |
4211 | ||
3110ff80 | 4212 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4213 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4214 | fl->fl_u.nfs4_fl.owner, |
4215 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4216 | if (data == NULL) |
4217 | return -ENOMEM; | |
4218 | if (IS_SETLKW(cmd)) | |
4219 | data->arg.block = 1; | |
b257957e AB |
4220 | if (recovery_type > NFS_LOCK_NEW) { |
4221 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4222 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4223 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4224 | } | |
1174dd1f TM |
4225 | msg.rpc_argp = &data->arg; |
4226 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4227 | task_setup_data.callback_data = data; |
4228 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4229 | if (IS_ERR(task)) |
a5d16a4d | 4230 | return PTR_ERR(task); |
a5d16a4d TM |
4231 | ret = nfs4_wait_for_completion_rpc_task(task); |
4232 | if (ret == 0) { | |
4233 | ret = data->rpc_status; | |
2bee72a6 TM |
4234 | if (ret) |
4235 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4236 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4237 | } else |
4238 | data->cancelled = 1; | |
e6b3c4db | 4239 | rpc_put_task(task); |
3110ff80 | 4240 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4241 | return ret; |
1da177e4 LT |
4242 | } |
4243 | ||
4244 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4245 | { | |
202b50dc TM |
4246 | struct nfs_server *server = NFS_SERVER(state->inode); |
4247 | struct nfs4_exception exception = { }; | |
4248 | int err; | |
4249 | ||
4250 | do { | |
42a2d13e TM |
4251 | /* Cache the lock if possible... */ |
4252 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4253 | return 0; | |
afe6c27c | 4254 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4255 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4256 | break; |
4257 | nfs4_handle_exception(server, err, &exception); | |
4258 | } while (exception.retry); | |
4259 | return err; | |
1da177e4 LT |
4260 | } |
4261 | ||
4262 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4263 | { | |
202b50dc TM |
4264 | struct nfs_server *server = NFS_SERVER(state->inode); |
4265 | struct nfs4_exception exception = { }; | |
4266 | int err; | |
4267 | ||
6bfc93ef TM |
4268 | err = nfs4_set_lock_state(state, request); |
4269 | if (err != 0) | |
4270 | return err; | |
202b50dc | 4271 | do { |
42a2d13e TM |
4272 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4273 | return 0; | |
afe6c27c | 4274 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4275 | switch (err) { |
4276 | default: | |
4277 | goto out; | |
4278 | case -NFS4ERR_GRACE: | |
4279 | case -NFS4ERR_DELAY: | |
4280 | nfs4_handle_exception(server, err, &exception); | |
4281 | err = 0; | |
4282 | } | |
202b50dc | 4283 | } while (exception.retry); |
a9ed2e25 | 4284 | out: |
202b50dc | 4285 | return err; |
1da177e4 LT |
4286 | } |
4287 | ||
4288 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4289 | { | |
19e03c57 | 4290 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4291 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4292 | int status = -ENOLCK; |
1da177e4 | 4293 | |
8e469ebd TM |
4294 | if ((fl_flags & FL_POSIX) && |
4295 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4296 | goto out; | |
6bfc93ef | 4297 | /* Is this a delegated open? */ |
6bfc93ef TM |
4298 | status = nfs4_set_lock_state(state, request); |
4299 | if (status != 0) | |
4300 | goto out; | |
01c3b861 TM |
4301 | request->fl_flags |= FL_ACCESS; |
4302 | status = do_vfs_lock(request->fl_file, request); | |
4303 | if (status < 0) | |
4304 | goto out; | |
19e03c57 | 4305 | down_read(&nfsi->rwsem); |
01c3b861 | 4306 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4307 | /* Yes: cache locks! */ |
01c3b861 | 4308 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4309 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4310 | status = do_vfs_lock(request->fl_file, request); | |
4311 | goto out_unlock; | |
01c3b861 | 4312 | } |
afe6c27c | 4313 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4314 | if (status != 0) |
01c3b861 | 4315 | goto out_unlock; |
6bfc93ef | 4316 | /* Note: we always want to sleep here! */ |
01c3b861 | 4317 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4318 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4319 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4320 | out_unlock: |
19e03c57 | 4321 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4322 | out: |
4323 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4324 | return status; |
4325 | } | |
4326 | ||
4327 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4328 | { | |
4329 | struct nfs4_exception exception = { }; | |
4330 | int err; | |
4331 | ||
4332 | do { | |
965b5d67 TM |
4333 | err = _nfs4_proc_setlk(state, cmd, request); |
4334 | if (err == -NFS4ERR_DENIED) | |
4335 | err = -EAGAIN; | |
1da177e4 | 4336 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4337 | err, &exception); |
1da177e4 LT |
4338 | } while (exception.retry); |
4339 | return err; | |
4340 | } | |
4341 | ||
4342 | static int | |
4343 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4344 | { | |
4345 | struct nfs_open_context *ctx; | |
4346 | struct nfs4_state *state; | |
4347 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4348 | int status; | |
4349 | ||
4350 | /* verify open state */ | |
cd3758e3 | 4351 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4352 | state = ctx->state; |
4353 | ||
4354 | if (request->fl_start < 0 || request->fl_end < 0) | |
4355 | return -EINVAL; | |
4356 | ||
d953126a TM |
4357 | if (IS_GETLK(cmd)) { |
4358 | if (state != NULL) | |
4359 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4360 | return 0; | |
4361 | } | |
1da177e4 LT |
4362 | |
4363 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4364 | return -EINVAL; | |
4365 | ||
d953126a TM |
4366 | if (request->fl_type == F_UNLCK) { |
4367 | if (state != NULL) | |
4368 | return nfs4_proc_unlck(state, cmd, request); | |
4369 | return 0; | |
4370 | } | |
1da177e4 | 4371 | |
d953126a TM |
4372 | if (state == NULL) |
4373 | return -ENOLCK; | |
1da177e4 LT |
4374 | do { |
4375 | status = nfs4_proc_setlk(state, cmd, request); | |
4376 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4377 | break; | |
4378 | timeout = nfs4_set_lock_task_retry(timeout); | |
4379 | status = -ERESTARTSYS; | |
4380 | if (signalled()) | |
4381 | break; | |
4382 | } while(status < 0); | |
1da177e4 LT |
4383 | return status; |
4384 | } | |
4385 | ||
888e694c TM |
4386 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4387 | { | |
4388 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4389 | struct nfs4_exception exception = { }; | |
4390 | int err; | |
4391 | ||
4392 | err = nfs4_set_lock_state(state, fl); | |
4393 | if (err != 0) | |
4394 | goto out; | |
4395 | do { | |
afe6c27c | 4396 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4397 | switch (err) { |
4398 | default: | |
4399 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4400 | __func__, err); | |
4401 | case 0: | |
965b5d67 | 4402 | case -ESTALE: |
d5122201 TM |
4403 | goto out; |
4404 | case -NFS4ERR_EXPIRED: | |
4405 | case -NFS4ERR_STALE_CLIENTID: | |
965b5d67 | 4406 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4407 | nfs4_schedule_lease_recovery(server->nfs_client); |
4408 | goto out; | |
74e7bb73 RL |
4409 | case -NFS4ERR_BADSESSION: |
4410 | case -NFS4ERR_BADSLOT: | |
4411 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4412 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4413 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4414 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4415 | goto out; |
965b5d67 TM |
4416 | case -ERESTARTSYS: |
4417 | /* | |
4418 | * The show must go on: exit, but mark the | |
4419 | * stateid as needing recovery. | |
4420 | */ | |
4421 | case -NFS4ERR_ADMIN_REVOKED: | |
4422 | case -NFS4ERR_BAD_STATEID: | |
4423 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4424 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4425 | err = 0; |
4426 | goto out; | |
168667c4 TM |
4427 | case -EKEYEXPIRED: |
4428 | /* | |
4429 | * User RPCSEC_GSS context has expired. | |
4430 | * We cannot recover this stateid now, so | |
4431 | * skip it and allow recovery thread to | |
4432 | * proceed. | |
4433 | */ | |
4434 | err = 0; | |
4435 | goto out; | |
965b5d67 TM |
4436 | case -ENOMEM: |
4437 | case -NFS4ERR_DENIED: | |
4438 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4439 | err = 0; | |
4440 | goto out; | |
d5122201 TM |
4441 | case -NFS4ERR_DELAY: |
4442 | break; | |
4443 | } | |
888e694c TM |
4444 | err = nfs4_handle_exception(server, err, &exception); |
4445 | } while (exception.retry); | |
4446 | out: | |
4447 | return err; | |
4448 | } | |
6b3b5496 | 4449 | |
d3c7b7cc TM |
4450 | static void nfs4_release_lockowner_release(void *calldata) |
4451 | { | |
4452 | kfree(calldata); | |
4453 | } | |
4454 | ||
4455 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4456 | .rpc_release = nfs4_release_lockowner_release, | |
4457 | }; | |
4458 | ||
4459 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4460 | { | |
4461 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4462 | struct nfs_release_lockowner_args *args; | |
4463 | struct rpc_message msg = { | |
4464 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4465 | }; | |
4466 | ||
4467 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4468 | return; | |
4469 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4470 | if (!args) | |
4471 | return; | |
4472 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
4473 | args->lock_owner.id = lsp->ls_id.id; | |
d035c36c | 4474 | args->lock_owner.s_dev = server->s_dev; |
d3c7b7cc TM |
4475 | msg.rpc_argp = args; |
4476 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4477 | } | |
4478 | ||
aa1870af BF |
4479 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4480 | ||
64c2ce8b AK |
4481 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4482 | const void *buf, size_t buflen, | |
4483 | int flags, int type) | |
6b3b5496 | 4484 | { |
64c2ce8b AK |
4485 | if (strcmp(key, "") != 0) |
4486 | return -EINVAL; | |
4b580ee3 | 4487 | |
64c2ce8b | 4488 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4489 | } |
4490 | ||
64c2ce8b AK |
4491 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4492 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4493 | { |
64c2ce8b AK |
4494 | if (strcmp(key, "") != 0) |
4495 | return -EINVAL; | |
aa1870af | 4496 | |
64c2ce8b | 4497 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4498 | } |
4499 | ||
64c2ce8b AK |
4500 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4501 | size_t list_len, const char *name, | |
4502 | size_t name_len, int type) | |
6b3b5496 | 4503 | { |
64c2ce8b | 4504 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4505 | |
096455a2 BF |
4506 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4507 | return 0; | |
64c2ce8b AK |
4508 | |
4509 | if (list && len <= list_len) | |
4510 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4511 | return len; |
6b3b5496 BF |
4512 | } |
4513 | ||
69aaaae1 TM |
4514 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4515 | { | |
4516 | if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) && | |
4517 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4518 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
4519 | return; | |
4520 | ||
4521 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4522 | NFS_ATTR_FATTR_NLINK; | |
4523 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4524 | fattr->nlink = 2; | |
4525 | } | |
4526 | ||
56659e99 | 4527 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4528 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4529 | { |
4530 | struct nfs_server *server = NFS_SERVER(dir); | |
4531 | u32 bitmask[2] = { | |
361e624f MN |
4532 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
4533 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
4534 | }; |
4535 | struct nfs4_fs_locations_arg args = { | |
4536 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4537 | .name = name, |
683b57b4 TM |
4538 | .page = page, |
4539 | .bitmask = bitmask, | |
4540 | }; | |
22958463 BH |
4541 | struct nfs4_fs_locations_res res = { |
4542 | .fs_locations = fs_locations, | |
4543 | }; | |
683b57b4 TM |
4544 | struct rpc_message msg = { |
4545 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4546 | .rpc_argp = &args, | |
22958463 | 4547 | .rpc_resp = &res, |
683b57b4 TM |
4548 | }; |
4549 | int status; | |
4550 | ||
3110ff80 | 4551 | dprintk("%s: start\n", __func__); |
c228fd3a | 4552 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4553 | fs_locations->server = server; |
830b8e33 | 4554 | fs_locations->nlocations = 0; |
cccef3b9 | 4555 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
69aaaae1 | 4556 | nfs_fixup_referral_attributes(&fs_locations->fattr); |
3110ff80 | 4557 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4558 | return status; |
4559 | } | |
4560 | ||
557134a3 | 4561 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4562 | /* |
4563 | * Check the exchange flags returned by the server for invalid flags, having | |
4564 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4565 | * DS flags set. | |
4566 | */ | |
4567 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4568 | { | |
4569 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4570 | goto out_inval; | |
4571 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4572 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4573 | goto out_inval; | |
4574 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4575 | goto out_inval; | |
4576 | return NFS_OK; | |
4577 | out_inval: | |
4578 | return -NFS4ERR_INVAL; | |
4579 | } | |
4580 | ||
99fe60d0 BH |
4581 | /* |
4582 | * nfs4_proc_exchange_id() | |
4583 | * | |
4584 | * Since the clientid has expired, all compounds using sessions | |
4585 | * associated with the stale clientid will be returning | |
4586 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4587 | * be in some phase of session reset. | |
4588 | */ | |
4d643d1d | 4589 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4590 | { |
4591 | nfs4_verifier verifier; | |
4592 | struct nfs41_exchange_id_args args = { | |
4593 | .client = clp, | |
357f54d6 | 4594 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4595 | }; |
4596 | struct nfs41_exchange_id_res res = { | |
4597 | .client = clp, | |
4598 | }; | |
4599 | int status; | |
4600 | struct rpc_message msg = { | |
4601 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4602 | .rpc_argp = &args, | |
4603 | .rpc_resp = &res, | |
4604 | .rpc_cred = cred, | |
4605 | }; | |
4606 | __be32 *p; | |
4607 | ||
4608 | dprintk("--> %s\n", __func__); | |
4609 | BUG_ON(clp == NULL); | |
a7b72103 | 4610 | |
99fe60d0 BH |
4611 | p = (u32 *)verifier.data; |
4612 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4613 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4614 | args.verifier = &verifier; | |
4615 | ||
c7a360b0 AA |
4616 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4617 | "%s/%s.%s/%u", | |
4618 | clp->cl_ipaddr, | |
4619 | init_utsname()->nodename, | |
4620 | init_utsname()->domainname, | |
4621 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4622 | |
c7a360b0 AA |
4623 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); |
4624 | if (!status) | |
4625 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
99fe60d0 BH |
4626 | dprintk("<-- %s status= %d\n", __func__, status); |
4627 | return status; | |
4628 | } | |
4629 | ||
2050f0cc AA |
4630 | struct nfs4_get_lease_time_data { |
4631 | struct nfs4_get_lease_time_args *args; | |
4632 | struct nfs4_get_lease_time_res *res; | |
4633 | struct nfs_client *clp; | |
4634 | }; | |
4635 | ||
4636 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4637 | void *calldata) | |
4638 | { | |
4639 | int ret; | |
4640 | struct nfs4_get_lease_time_data *data = | |
4641 | (struct nfs4_get_lease_time_data *)calldata; | |
4642 | ||
4643 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 4644 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
4645 | /* just setup sequence, do not trigger session recovery |
4646 | since we're invoked within one */ | |
4647 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 AB |
4648 | &data->args->la_seq_args, |
4649 | &data->res->lr_seq_res, 0, task); | |
2050f0cc AA |
4650 | |
4651 | BUG_ON(ret == -EAGAIN); | |
4652 | rpc_call_start(task); | |
4653 | dprintk("<-- %s\n", __func__); | |
4654 | } | |
4655 | ||
4656 | /* | |
4657 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4658 | * from sequence operation or clientid errors. | |
4659 | */ | |
4660 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4661 | { | |
4662 | struct nfs4_get_lease_time_data *data = | |
4663 | (struct nfs4_get_lease_time_data *)calldata; | |
4664 | ||
4665 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
4666 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
4667 | return; | |
2050f0cc AA |
4668 | switch (task->tk_status) { |
4669 | case -NFS4ERR_DELAY: | |
4670 | case -NFS4ERR_GRACE: | |
4671 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4672 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4673 | task->tk_status = 0; | |
0110ee15 | 4674 | nfs_restart_rpc(task, data->clp); |
2050f0cc AA |
4675 | return; |
4676 | } | |
2050f0cc AA |
4677 | dprintk("<-- %s\n", __func__); |
4678 | } | |
4679 | ||
4680 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4681 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4682 | .rpc_call_done = nfs4_get_lease_time_done, | |
4683 | }; | |
4684 | ||
4685 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4686 | { | |
4687 | struct rpc_task *task; | |
4688 | struct nfs4_get_lease_time_args args; | |
4689 | struct nfs4_get_lease_time_res res = { | |
4690 | .lr_fsinfo = fsinfo, | |
4691 | }; | |
4692 | struct nfs4_get_lease_time_data data = { | |
4693 | .args = &args, | |
4694 | .res = &res, | |
4695 | .clp = clp, | |
4696 | }; | |
4697 | struct rpc_message msg = { | |
4698 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4699 | .rpc_argp = &args, | |
4700 | .rpc_resp = &res, | |
4701 | }; | |
4702 | struct rpc_task_setup task_setup = { | |
4703 | .rpc_client = clp->cl_rpcclient, | |
4704 | .rpc_message = &msg, | |
4705 | .callback_ops = &nfs4_get_lease_time_ops, | |
4706 | .callback_data = &data | |
4707 | }; | |
4708 | int status; | |
4709 | ||
2050f0cc AA |
4710 | dprintk("--> %s\n", __func__); |
4711 | task = rpc_run_task(&task_setup); | |
4712 | ||
4713 | if (IS_ERR(task)) | |
4714 | status = PTR_ERR(task); | |
4715 | else { | |
4716 | status = task->tk_status; | |
4717 | rpc_put_task(task); | |
4718 | } | |
4719 | dprintk("<-- %s return %d\n", __func__, status); | |
4720 | ||
4721 | return status; | |
4722 | } | |
4723 | ||
b73dafa7 RL |
4724 | /* |
4725 | * Reset a slot table | |
4726 | */ | |
104aeba4 AA |
4727 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
4728 | int ivalue) | |
ac72b7b3 | 4729 | { |
104aeba4 | 4730 | struct nfs4_slot *new = NULL; |
b73dafa7 | 4731 | int i; |
ac72b7b3 AA |
4732 | int ret = 0; |
4733 | ||
104aeba4 AA |
4734 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
4735 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 4736 | |
104aeba4 AA |
4737 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
4738 | if (max_reqs != tbl->max_slots) { | |
4739 | ret = -ENOMEM; | |
4740 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 4741 | GFP_NOFS); |
104aeba4 AA |
4742 | if (!new) |
4743 | goto out; | |
4744 | ret = 0; | |
4745 | kfree(tbl->slots); | |
ac72b7b3 AA |
4746 | } |
4747 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
4748 | if (new) { |
4749 | tbl->slots = new; | |
4750 | tbl->max_slots = max_reqs; | |
4751 | } | |
4752 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 4753 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
4754 | spin_unlock(&tbl->slot_tbl_lock); |
4755 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4756 | tbl, tbl->slots, tbl->max_slots); | |
4757 | out: | |
4758 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4759 | return ret; | |
4760 | } | |
4761 | ||
b73dafa7 RL |
4762 | /* |
4763 | * Reset the forechannel and backchannel slot tables | |
4764 | */ | |
4765 | static int nfs4_reset_slot_tables(struct nfs4_session *session) | |
4766 | { | |
4767 | int status; | |
4768 | ||
4769 | status = nfs4_reset_slot_table(&session->fc_slot_table, | |
104aeba4 | 4770 | session->fc_attrs.max_reqs, 1); |
f8625a6a RL |
4771 | if (status) |
4772 | return status; | |
4773 | ||
4774 | status = nfs4_reset_slot_table(&session->bc_slot_table, | |
104aeba4 | 4775 | session->bc_attrs.max_reqs, 0); |
b73dafa7 RL |
4776 | return status; |
4777 | } | |
4778 | ||
f8625a6a RL |
4779 | /* Destroy the slot table */ |
4780 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
4781 | { | |
4782 | if (session->fc_slot_table.slots != NULL) { | |
4783 | kfree(session->fc_slot_table.slots); | |
4784 | session->fc_slot_table.slots = NULL; | |
4785 | } | |
4786 | if (session->bc_slot_table.slots != NULL) { | |
4787 | kfree(session->bc_slot_table.slots); | |
4788 | session->bc_slot_table.slots = NULL; | |
4789 | } | |
4790 | return; | |
4791 | } | |
4792 | ||
fc931582 AA |
4793 | /* |
4794 | * Initialize slot table | |
4795 | */ | |
050047ce RL |
4796 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
4797 | int max_slots, int ivalue) | |
fc931582 | 4798 | { |
fc931582 AA |
4799 | struct nfs4_slot *slot; |
4800 | int ret = -ENOMEM; | |
4801 | ||
4802 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
4803 | ||
050047ce | 4804 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 4805 | |
8535b2be | 4806 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
4807 | if (!slot) |
4808 | goto out; | |
fc931582 AA |
4809 | ret = 0; |
4810 | ||
4811 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
4812 | tbl->max_slots = max_slots; |
4813 | tbl->slots = slot; | |
4814 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
4815 | spin_unlock(&tbl->slot_tbl_lock); | |
4816 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4817 | tbl, tbl->slots, tbl->max_slots); | |
4818 | out: | |
4819 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4820 | return ret; | |
fc931582 AA |
4821 | } |
4822 | ||
050047ce RL |
4823 | /* |
4824 | * Initialize the forechannel and backchannel tables | |
4825 | */ | |
4826 | static int nfs4_init_slot_tables(struct nfs4_session *session) | |
4827 | { | |
f26468fb TM |
4828 | struct nfs4_slot_table *tbl; |
4829 | int status = 0; | |
050047ce | 4830 | |
f26468fb TM |
4831 | tbl = &session->fc_slot_table; |
4832 | if (tbl->slots == NULL) { | |
4833 | status = nfs4_init_slot_table(tbl, | |
4834 | session->fc_attrs.max_reqs, 1); | |
4835 | if (status) | |
4836 | return status; | |
4837 | } | |
050047ce | 4838 | |
f26468fb TM |
4839 | tbl = &session->bc_slot_table; |
4840 | if (tbl->slots == NULL) { | |
4841 | status = nfs4_init_slot_table(tbl, | |
4842 | session->bc_attrs.max_reqs, 0); | |
4843 | if (status) | |
4844 | nfs4_destroy_slot_tables(session); | |
4845 | } | |
f8625a6a RL |
4846 | |
4847 | return status; | |
557134a3 AA |
4848 | } |
4849 | ||
4850 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
4851 | { | |
4852 | struct nfs4_session *session; | |
4853 | struct nfs4_slot_table *tbl; | |
4854 | ||
8535b2be | 4855 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
4856 | if (!session) |
4857 | return NULL; | |
76db6d95 | 4858 | |
557134a3 | 4859 | tbl = &session->fc_slot_table; |
9dfdf404 | 4860 | tbl->highest_used_slotid = -1; |
557134a3 | 4861 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 4862 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 4863 | init_completion(&tbl->complete); |
f8625a6a RL |
4864 | |
4865 | tbl = &session->bc_slot_table; | |
9dfdf404 | 4866 | tbl->highest_used_slotid = -1; |
f8625a6a RL |
4867 | spin_lock_init(&tbl->slot_tbl_lock); |
4868 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 4869 | init_completion(&tbl->complete); |
f8625a6a | 4870 | |
1055d76d TM |
4871 | session->session_state = 1<<NFS4_SESSION_INITING; |
4872 | ||
557134a3 AA |
4873 | session->clp = clp; |
4874 | return session; | |
4875 | } | |
4876 | ||
4877 | void nfs4_destroy_session(struct nfs4_session *session) | |
4878 | { | |
5a0ffe54 AA |
4879 | nfs4_proc_destroy_session(session); |
4880 | dprintk("%s Destroy backchannel for xprt %p\n", | |
4881 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
4882 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
4883 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 4884 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
4885 | kfree(session); |
4886 | } | |
4887 | ||
fc931582 AA |
4888 | /* |
4889 | * Initialize the values to be used by the client in CREATE_SESSION | |
4890 | * If nfs4_init_session set the fore channel request and response sizes, | |
4891 | * use them. | |
4892 | * | |
4893 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
4894 | * always set csa_cachethis to FALSE because the current implementation | |
4895 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
4896 | */ | |
4897 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
4898 | { | |
4899 | struct nfs4_session *session = args->client->cl_session; | |
4900 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
4901 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
4902 | ||
4903 | if (mxrqst_sz == 0) | |
4904 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
4905 | if (mxresp_sz == 0) | |
4906 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
4907 | /* Fore channel attributes */ | |
4908 | args->fc_attrs.headerpadsz = 0; | |
4909 | args->fc_attrs.max_rqst_sz = mxrqst_sz; | |
4910 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 AA |
4911 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
4912 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
4913 | ||
4914 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 4915 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
4916 | __func__, |
4917 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 4918 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
4919 | |
4920 | /* Back channel attributes */ | |
4921 | args->bc_attrs.headerpadsz = 0; | |
4922 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; | |
4923 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
4924 | args->bc_attrs.max_resp_sz_cached = 0; | |
4925 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
4926 | args->bc_attrs.max_reqs = 1; | |
4927 | ||
4928 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
4929 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
4930 | __func__, | |
4931 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
4932 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
4933 | args->bc_attrs.max_reqs); | |
4934 | } | |
4935 | ||
43c2e885 | 4936 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 4937 | { |
43c2e885 BF |
4938 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
4939 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
4940 | ||
4941 | if (rcvd->headerpadsz > sent->headerpadsz) | |
4942 | return -EINVAL; | |
4943 | if (rcvd->max_resp_sz > sent->max_resp_sz) | |
4944 | return -EINVAL; | |
4945 | /* | |
4946 | * Our requested max_ops is the minimum we need; we're not | |
4947 | * prepared to break up compounds into smaller pieces than that. | |
4948 | * So, no point even trying to continue if the server won't | |
4949 | * cooperate: | |
4950 | */ | |
4951 | if (rcvd->max_ops < sent->max_ops) | |
4952 | return -EINVAL; | |
4953 | if (rcvd->max_reqs == 0) | |
4954 | return -EINVAL; | |
4955 | return 0; | |
8d35301d AA |
4956 | } |
4957 | ||
43c2e885 BF |
4958 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
4959 | { | |
4960 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
4961 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 4962 | |
43c2e885 BF |
4963 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
4964 | return -EINVAL; | |
4965 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
4966 | return -EINVAL; | |
4967 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
4968 | return -EINVAL; | |
4969 | /* These would render the backchannel useless: */ | |
4970 | if (rcvd->max_ops == 0) | |
4971 | return -EINVAL; | |
4972 | if (rcvd->max_reqs == 0) | |
4973 | return -EINVAL; | |
4974 | return 0; | |
4975 | } | |
8d35301d | 4976 | |
8d35301d AA |
4977 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
4978 | struct nfs4_session *session) | |
4979 | { | |
43c2e885 | 4980 | int ret; |
8d35301d | 4981 | |
43c2e885 BF |
4982 | ret = nfs4_verify_fore_channel_attrs(args, session); |
4983 | if (ret) | |
4984 | return ret; | |
4985 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
4986 | } |
4987 | ||
fc931582 AA |
4988 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
4989 | { | |
4990 | struct nfs4_session *session = clp->cl_session; | |
4991 | struct nfs41_create_session_args args = { | |
4992 | .client = clp, | |
4993 | .cb_program = NFS4_CALLBACK, | |
4994 | }; | |
4995 | struct nfs41_create_session_res res = { | |
4996 | .client = clp, | |
4997 | }; | |
4998 | struct rpc_message msg = { | |
4999 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5000 | .rpc_argp = &args, | |
5001 | .rpc_resp = &res, | |
5002 | }; | |
5003 | int status; | |
5004 | ||
5005 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5006 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 AA |
5007 | |
5008 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
5009 | ||
8d35301d AA |
5010 | if (!status) |
5011 | /* Verify the session's negotiated channel_attrs values */ | |
5012 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5013 | if (!status) { |
5014 | /* Increment the clientid slot sequence id */ | |
5015 | clp->cl_seqid++; | |
5016 | } | |
5017 | ||
5018 | return status; | |
5019 | } | |
5020 | ||
5021 | /* | |
5022 | * Issues a CREATE_SESSION operation to the server. | |
5023 | * It is the responsibility of the caller to verify the session is | |
5024 | * expired before calling this routine. | |
5025 | */ | |
f26468fb | 5026 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5027 | { |
5028 | int status; | |
5029 | unsigned *ptr; | |
fc931582 | 5030 | struct nfs4_session *session = clp->cl_session; |
7d6d63d6 RL |
5031 | long timeout = 0; |
5032 | int err; | |
fc931582 AA |
5033 | |
5034 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5035 | ||
7d6d63d6 RL |
5036 | do { |
5037 | status = _nfs4_proc_create_session(clp); | |
5038 | if (status == -NFS4ERR_DELAY) { | |
5039 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
5040 | if (err) | |
5041 | status = err; | |
5042 | } | |
5043 | } while (status == -NFS4ERR_DELAY); | |
5044 | ||
fc931582 AA |
5045 | if (status) |
5046 | goto out; | |
5047 | ||
f26468fb TM |
5048 | /* Init and reset the fore channel */ |
5049 | status = nfs4_init_slot_tables(session); | |
5050 | dprintk("slot table initialization returned %d\n", status); | |
5051 | if (status) | |
5052 | goto out; | |
5053 | status = nfs4_reset_slot_tables(session); | |
5054 | dprintk("slot table reset returned %d\n", status); | |
fc931582 AA |
5055 | if (status) |
5056 | goto out; | |
5057 | ||
5058 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5059 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5060 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5061 | out: |
5062 | dprintk("<-- %s\n", __func__); | |
5063 | return status; | |
5064 | } | |
5065 | ||
0f3e66c6 AA |
5066 | /* |
5067 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5068 | * The caller must serialize access to this routine. | |
5069 | */ | |
5070 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5071 | { | |
5072 | int status = 0; | |
5073 | struct rpc_message msg; | |
5074 | ||
5075 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5076 | ||
5077 | /* session is still being setup */ | |
5078 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5079 | return status; | |
5080 | ||
5081 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5082 | msg.rpc_argp = session; | |
5083 | msg.rpc_resp = NULL; | |
5084 | msg.rpc_cred = NULL; | |
5085 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
5086 | ||
5087 | if (status) | |
5088 | printk(KERN_WARNING | |
5089 | "Got error %d from the server on DESTROY_SESSION. " | |
5090 | "Session has been destroyed regardless...\n", status); | |
5091 | ||
5092 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5093 | return status; | |
5094 | } | |
5095 | ||
fccba804 TM |
5096 | int nfs4_init_session(struct nfs_server *server) |
5097 | { | |
5098 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5099 | struct nfs4_session *session; |
68bf05ef | 5100 | unsigned int rsize, wsize; |
fccba804 TM |
5101 | int ret; |
5102 | ||
5103 | if (!nfs4_has_session(clp)) | |
5104 | return 0; | |
5105 | ||
1055d76d TM |
5106 | session = clp->cl_session; |
5107 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5108 | return 0; | |
5109 | ||
68bf05ef AA |
5110 | rsize = server->rsize; |
5111 | if (rsize == 0) | |
5112 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5113 | wsize = server->wsize; | |
5114 | if (wsize == 0) | |
5115 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5116 | ||
68bf05ef AA |
5117 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5118 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5119 | |
fccba804 TM |
5120 | ret = nfs4_recover_expired_lease(server); |
5121 | if (!ret) | |
5122 | ret = nfs4_check_client_ready(clp); | |
5123 | return ret; | |
5124 | } | |
5125 | ||
d83217c1 AA |
5126 | int nfs4_init_ds_session(struct nfs_client *clp) |
5127 | { | |
5128 | struct nfs4_session *session = clp->cl_session; | |
5129 | int ret; | |
5130 | ||
5131 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5132 | return 0; | |
5133 | ||
5134 | ret = nfs4_client_recover_expired_lease(clp); | |
5135 | if (!ret) | |
5136 | /* Test for the DS role */ | |
5137 | if (!is_ds_client(clp)) | |
5138 | ret = -ENODEV; | |
5139 | if (!ret) | |
5140 | ret = nfs4_check_client_ready(clp); | |
5141 | return ret; | |
5142 | ||
5143 | } | |
5144 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5145 | ||
5146 | ||
fc01cea9 AA |
5147 | /* |
5148 | * Renew the cl_session lease. | |
5149 | */ | |
d5f8d3fe TM |
5150 | struct nfs4_sequence_data { |
5151 | struct nfs_client *clp; | |
5152 | struct nfs4_sequence_args args; | |
5153 | struct nfs4_sequence_res res; | |
5154 | }; | |
5155 | ||
dc96aef9 AB |
5156 | static void nfs41_sequence_release(void *data) |
5157 | { | |
d5f8d3fe TM |
5158 | struct nfs4_sequence_data *calldata = data; |
5159 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5160 | |
7135840f AB |
5161 | if (atomic_read(&clp->cl_count) > 1) |
5162 | nfs4_schedule_state_renewal(clp); | |
5163 | nfs_put_client(clp); | |
d5f8d3fe | 5164 | kfree(calldata); |
dc96aef9 AB |
5165 | } |
5166 | ||
aa5190d0 TM |
5167 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5168 | { | |
5169 | switch(task->tk_status) { | |
5170 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5171 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5172 | return -EAGAIN; | |
5173 | default: | |
0400a6b0 | 5174 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5175 | } |
5176 | return 0; | |
5177 | } | |
5178 | ||
dc96aef9 | 5179 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5180 | { |
d5f8d3fe TM |
5181 | struct nfs4_sequence_data *calldata = data; |
5182 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5183 | |
14516c3a TM |
5184 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5185 | return; | |
fc01cea9 AA |
5186 | |
5187 | if (task->tk_status < 0) { | |
5188 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5189 | if (atomic_read(&clp->cl_count) == 1) |
5190 | goto out; | |
fc01cea9 | 5191 | |
aa5190d0 TM |
5192 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5193 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5194 | return; |
5195 | } | |
5196 | } | |
fc01cea9 | 5197 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5198 | out: |
fc01cea9 AA |
5199 | dprintk("<-- %s\n", __func__); |
5200 | } | |
5201 | ||
5202 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5203 | { | |
d5f8d3fe TM |
5204 | struct nfs4_sequence_data *calldata = data; |
5205 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5206 | struct nfs4_sequence_args *args; |
5207 | struct nfs4_sequence_res *res; | |
5208 | ||
fc01cea9 AA |
5209 | args = task->tk_msg.rpc_argp; |
5210 | res = task->tk_msg.rpc_resp; | |
5211 | ||
035168ab | 5212 | if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) |
fc01cea9 AA |
5213 | return; |
5214 | rpc_call_start(task); | |
5215 | } | |
5216 | ||
5217 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5218 | .rpc_call_done = nfs41_sequence_call_done, | |
5219 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5220 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5221 | }; |
5222 | ||
71ac6da9 | 5223 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5224 | { |
d5f8d3fe | 5225 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5226 | struct rpc_message msg = { |
5227 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5228 | .rpc_cred = cred, | |
5229 | }; | |
71ac6da9 TM |
5230 | struct rpc_task_setup task_setup_data = { |
5231 | .rpc_client = clp->cl_rpcclient, | |
5232 | .rpc_message = &msg, | |
5233 | .callback_ops = &nfs41_sequence_ops, | |
5234 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5235 | }; | |
fc01cea9 | 5236 | |
7135840f | 5237 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5238 | return ERR_PTR(-EIO); |
dfb4f309 | 5239 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5240 | if (calldata == NULL) { |
7135840f | 5241 | nfs_put_client(clp); |
71ac6da9 | 5242 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5243 | } |
d5f8d3fe TM |
5244 | msg.rpc_argp = &calldata->args; |
5245 | msg.rpc_resp = &calldata->res; | |
5246 | calldata->clp = clp; | |
71ac6da9 | 5247 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5248 | |
71ac6da9 TM |
5249 | return rpc_run_task(&task_setup_data); |
5250 | } | |
5251 | ||
5252 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5253 | { | |
5254 | struct rpc_task *task; | |
5255 | int ret = 0; | |
5256 | ||
5257 | task = _nfs41_proc_sequence(clp, cred); | |
5258 | if (IS_ERR(task)) | |
5259 | ret = PTR_ERR(task); | |
5260 | else | |
bf294b41 | 5261 | rpc_put_task_async(task); |
71ac6da9 TM |
5262 | dprintk("<-- %s status=%d\n", __func__, ret); |
5263 | return ret; | |
5264 | } | |
5265 | ||
5266 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5267 | { | |
5268 | struct rpc_task *task; | |
5269 | int ret; | |
5270 | ||
5271 | task = _nfs41_proc_sequence(clp, cred); | |
5272 | if (IS_ERR(task)) { | |
5273 | ret = PTR_ERR(task); | |
5274 | goto out; | |
5275 | } | |
5276 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5277 | if (!ret) { |
5278 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5279 | ||
5280 | if (task->tk_status == 0) | |
5281 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5282 | ret = task->tk_status; |
b4410c2f | 5283 | } |
71ac6da9 TM |
5284 | rpc_put_task(task); |
5285 | out: | |
5286 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5287 | return ret; | |
fc01cea9 AA |
5288 | } |
5289 | ||
fce5c838 RL |
5290 | struct nfs4_reclaim_complete_data { |
5291 | struct nfs_client *clp; | |
5292 | struct nfs41_reclaim_complete_args arg; | |
5293 | struct nfs41_reclaim_complete_res res; | |
5294 | }; | |
5295 | ||
5296 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5297 | { | |
5298 | struct nfs4_reclaim_complete_data *calldata = data; | |
5299 | ||
b257957e | 5300 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5301 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5302 | &calldata->arg.seq_args, | |
fce5c838 RL |
5303 | &calldata->res.seq_res, 0, task)) |
5304 | return; | |
5305 | ||
5306 | rpc_call_start(task); | |
5307 | } | |
5308 | ||
aa5190d0 TM |
5309 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5310 | { | |
5311 | switch(task->tk_status) { | |
5312 | case 0: | |
5313 | case -NFS4ERR_COMPLETE_ALREADY: | |
5314 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5315 | break; | |
5316 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5317 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5318 | return -EAGAIN; | |
5319 | default: | |
0400a6b0 | 5320 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5321 | } |
5322 | return 0; | |
5323 | } | |
5324 | ||
fce5c838 RL |
5325 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5326 | { | |
5327 | struct nfs4_reclaim_complete_data *calldata = data; | |
5328 | struct nfs_client *clp = calldata->clp; | |
5329 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5330 | ||
5331 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5332 | if (!nfs41_sequence_done(task, res)) |
5333 | return; | |
fce5c838 | 5334 | |
aa5190d0 TM |
5335 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5336 | rpc_restart_call_prepare(task); | |
5337 | return; | |
5338 | } | |
fce5c838 RL |
5339 | dprintk("<-- %s\n", __func__); |
5340 | } | |
5341 | ||
5342 | static void nfs4_free_reclaim_complete_data(void *data) | |
5343 | { | |
5344 | struct nfs4_reclaim_complete_data *calldata = data; | |
5345 | ||
5346 | kfree(calldata); | |
5347 | } | |
5348 | ||
5349 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5350 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5351 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5352 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5353 | }; | |
5354 | ||
5355 | /* | |
5356 | * Issue a global reclaim complete. | |
5357 | */ | |
5358 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5359 | { | |
5360 | struct nfs4_reclaim_complete_data *calldata; | |
5361 | struct rpc_task *task; | |
5362 | struct rpc_message msg = { | |
5363 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5364 | }; | |
5365 | struct rpc_task_setup task_setup_data = { | |
5366 | .rpc_client = clp->cl_rpcclient, | |
5367 | .rpc_message = &msg, | |
5368 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5369 | .flags = RPC_TASK_ASYNC, | |
5370 | }; | |
5371 | int status = -ENOMEM; | |
5372 | ||
5373 | dprintk("--> %s\n", __func__); | |
8535b2be | 5374 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5375 | if (calldata == NULL) |
5376 | goto out; | |
5377 | calldata->clp = clp; | |
5378 | calldata->arg.one_fs = 0; | |
fce5c838 RL |
5379 | |
5380 | msg.rpc_argp = &calldata->arg; | |
5381 | msg.rpc_resp = &calldata->res; | |
5382 | task_setup_data.callback_data = calldata; | |
5383 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5384 | if (IS_ERR(task)) { |
fce5c838 | 5385 | status = PTR_ERR(task); |
acf82b85 DC |
5386 | goto out; |
5387 | } | |
c34c32ea AA |
5388 | status = nfs4_wait_for_completion_rpc_task(task); |
5389 | if (status == 0) | |
5390 | status = task->tk_status; | |
fce5c838 | 5391 | rpc_put_task(task); |
acf82b85 | 5392 | return 0; |
fce5c838 RL |
5393 | out: |
5394 | dprintk("<-- %s status=%d\n", __func__, status); | |
5395 | return status; | |
5396 | } | |
b1f69b75 AA |
5397 | |
5398 | static void | |
5399 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5400 | { | |
5401 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5402 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5403 | |
5404 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5405 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5406 | * right now covering the LAYOUTGET we are about to send. | |
5407 | * However, that is not so catastrophic, and there seems | |
5408 | * to be no way to prevent it completely. | |
5409 | */ | |
b1f69b75 AA |
5410 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
5411 | &lgp->res.seq_res, 0, task)) | |
5412 | return; | |
cf7d63f1 FI |
5413 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5414 | NFS_I(lgp->args.inode)->layout, | |
5415 | lgp->args.ctx->state)) { | |
5416 | rpc_exit(task, NFS4_OK); | |
5417 | return; | |
5418 | } | |
b1f69b75 AA |
5419 | rpc_call_start(task); |
5420 | } | |
5421 | ||
5422 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5423 | { | |
5424 | struct nfs4_layoutget *lgp = calldata; | |
5425 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5426 | ||
5427 | dprintk("--> %s\n", __func__); | |
5428 | ||
5429 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5430 | return; | |
5431 | ||
5432 | switch (task->tk_status) { | |
5433 | case 0: | |
5434 | break; | |
5435 | case -NFS4ERR_LAYOUTTRYLATER: | |
5436 | case -NFS4ERR_RECALLCONFLICT: | |
5437 | task->tk_status = -NFS4ERR_DELAY; | |
5438 | /* Fall through */ | |
5439 | default: | |
5440 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5441 | rpc_restart_call_prepare(task); | |
5442 | return; | |
5443 | } | |
5444 | } | |
b1f69b75 AA |
5445 | dprintk("<-- %s\n", __func__); |
5446 | } | |
5447 | ||
5448 | static void nfs4_layoutget_release(void *calldata) | |
5449 | { | |
5450 | struct nfs4_layoutget *lgp = calldata; | |
5451 | ||
5452 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5453 | if (lgp->res.layout.buf != NULL) |
5454 | free_page((unsigned long) lgp->res.layout.buf); | |
5455 | put_nfs_open_context(lgp->args.ctx); | |
5456 | kfree(calldata); | |
5457 | dprintk("<-- %s\n", __func__); | |
5458 | } | |
5459 | ||
5460 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5461 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5462 | .rpc_call_done = nfs4_layoutget_done, | |
5463 | .rpc_release = nfs4_layoutget_release, | |
5464 | }; | |
5465 | ||
5466 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5467 | { | |
5468 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5469 | struct rpc_task *task; | |
5470 | struct rpc_message msg = { | |
5471 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5472 | .rpc_argp = &lgp->args, | |
5473 | .rpc_resp = &lgp->res, | |
5474 | }; | |
5475 | struct rpc_task_setup task_setup_data = { | |
5476 | .rpc_client = server->client, | |
5477 | .rpc_message = &msg, | |
5478 | .callback_ops = &nfs4_layoutget_call_ops, | |
5479 | .callback_data = lgp, | |
5480 | .flags = RPC_TASK_ASYNC, | |
5481 | }; | |
5482 | int status = 0; | |
5483 | ||
5484 | dprintk("--> %s\n", __func__); | |
5485 | ||
5486 | lgp->res.layout.buf = (void *)__get_free_page(GFP_NOFS); | |
5487 | if (lgp->res.layout.buf == NULL) { | |
5488 | nfs4_layoutget_release(lgp); | |
5489 | return -ENOMEM; | |
5490 | } | |
5491 | ||
5492 | lgp->res.seq_res.sr_slot = NULL; | |
5493 | task = rpc_run_task(&task_setup_data); | |
5494 | if (IS_ERR(task)) | |
5495 | return PTR_ERR(task); | |
5496 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5497 | if (status == 0) |
5498 | status = task->tk_status; | |
5499 | if (status == 0) | |
5500 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5501 | rpc_put_task(task); |
5502 | dprintk("<-- %s status=%d\n", __func__, status); | |
5503 | return status; | |
5504 | } | |
5505 | ||
5506 | static int | |
5507 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5508 | { | |
5509 | struct nfs4_getdeviceinfo_args args = { | |
5510 | .pdev = pdev, | |
5511 | }; | |
5512 | struct nfs4_getdeviceinfo_res res = { | |
5513 | .pdev = pdev, | |
5514 | }; | |
5515 | struct rpc_message msg = { | |
5516 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5517 | .rpc_argp = &args, | |
5518 | .rpc_resp = &res, | |
5519 | }; | |
5520 | int status; | |
5521 | ||
5522 | dprintk("--> %s\n", __func__); | |
5523 | status = nfs4_call_sync(server, &msg, &args, &res, 0); | |
5524 | dprintk("<-- %s status=%d\n", __func__, status); | |
5525 | ||
5526 | return status; | |
5527 | } | |
5528 | ||
5529 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5530 | { | |
5531 | struct nfs4_exception exception = { }; | |
5532 | int err; | |
5533 | ||
5534 | do { | |
5535 | err = nfs4_handle_exception(server, | |
5536 | _nfs4_proc_getdeviceinfo(server, pdev), | |
5537 | &exception); | |
5538 | } while (exception.retry); | |
5539 | return err; | |
5540 | } | |
5541 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
5542 | ||
557134a3 AA |
5543 | #endif /* CONFIG_NFS_V4_1 */ |
5544 | ||
591d71cb | 5545 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 5546 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 5547 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
5548 | .recover_open = nfs4_open_reclaim, |
5549 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 5550 | .establish_clid = nfs4_init_clientid, |
90a16617 | 5551 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
5552 | }; |
5553 | ||
591d71cb AA |
5554 | #if defined(CONFIG_NFS_V4_1) |
5555 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
5556 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
5557 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
5558 | .recover_open = nfs4_open_reclaim, | |
5559 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 5560 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5561 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 5562 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
5563 | }; |
5564 | #endif /* CONFIG_NFS_V4_1 */ | |
5565 | ||
5566 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
5567 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
5568 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
5569 | .recover_open = nfs4_open_expired, | |
5570 | .recover_lock = nfs4_lock_expired, | |
5571 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 5572 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
5573 | }; |
5574 | ||
5575 | #if defined(CONFIG_NFS_V4_1) | |
5576 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 5577 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 5578 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
1da177e4 LT |
5579 | .recover_open = nfs4_open_expired, |
5580 | .recover_lock = nfs4_lock_expired, | |
4d643d1d | 5581 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5582 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 5583 | }; |
591d71cb | 5584 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 5585 | |
29fba38b BH |
5586 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
5587 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 5588 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 5589 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
5590 | }; |
5591 | ||
5592 | #if defined(CONFIG_NFS_V4_1) | |
5593 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
5594 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 5595 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 5596 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
5597 | }; |
5598 | #endif | |
5599 | ||
97dc1359 TM |
5600 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
5601 | .minor_version = 0, | |
5602 | .call_sync = _nfs4_call_sync, | |
e047a10c | 5603 | .validate_stateid = nfs4_validate_delegation_stateid, |
c48f4f35 TM |
5604 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
5605 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
5606 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
5607 | }; |
5608 | ||
5609 | #if defined(CONFIG_NFS_V4_1) | |
5610 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
5611 | .minor_version = 1, | |
5612 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 5613 | .validate_stateid = nfs41_validate_delegation_stateid, |
c48f4f35 TM |
5614 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
5615 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
5616 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
5617 | }; |
5618 | #endif | |
5619 | ||
97dc1359 TM |
5620 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
5621 | [0] = &nfs_v4_0_minor_ops, | |
5622 | #if defined(CONFIG_NFS_V4_1) | |
5623 | [1] = &nfs_v4_1_minor_ops, | |
5624 | #endif | |
5625 | }; | |
5626 | ||
92e1d5be | 5627 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
5628 | .permission = nfs_permission, |
5629 | .getattr = nfs_getattr, | |
5630 | .setattr = nfs_setattr, | |
64c2ce8b AK |
5631 | .getxattr = generic_getxattr, |
5632 | .setxattr = generic_setxattr, | |
5633 | .listxattr = generic_listxattr, | |
5634 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
5635 | }; |
5636 | ||
509de811 | 5637 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
5638 | .version = 4, /* protocol version */ |
5639 | .dentry_ops = &nfs4_dentry_operations, | |
5640 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 5641 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
5642 | .getroot = nfs4_proc_get_root, |
5643 | .getattr = nfs4_proc_getattr, | |
5644 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 5645 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
5646 | .lookup = nfs4_proc_lookup, |
5647 | .access = nfs4_proc_access, | |
5648 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
5649 | .create = nfs4_proc_create, |
5650 | .remove = nfs4_proc_remove, | |
5651 | .unlink_setup = nfs4_proc_unlink_setup, | |
5652 | .unlink_done = nfs4_proc_unlink_done, | |
5653 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
5654 | .rename_setup = nfs4_proc_rename_setup, |
5655 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
5656 | .link = nfs4_proc_link, |
5657 | .symlink = nfs4_proc_symlink, | |
5658 | .mkdir = nfs4_proc_mkdir, | |
5659 | .rmdir = nfs4_proc_remove, | |
5660 | .readdir = nfs4_proc_readdir, | |
5661 | .mknod = nfs4_proc_mknod, | |
5662 | .statfs = nfs4_proc_statfs, | |
5663 | .fsinfo = nfs4_proc_fsinfo, | |
5664 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 5665 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
5666 | .decode_dirent = nfs4_decode_dirent, |
5667 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 5668 | .read_done = nfs4_read_done, |
1da177e4 | 5669 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 5670 | .write_done = nfs4_write_done, |
1da177e4 | 5671 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 5672 | .commit_done = nfs4_commit_done, |
1da177e4 | 5673 | .lock = nfs4_proc_lock, |
e50a1c2e | 5674 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 5675 | .close_context = nfs4_close_context, |
2b484297 | 5676 | .open_context = nfs4_atomic_open, |
45a52a02 | 5677 | .init_client = nfs4_init_client, |
1da177e4 LT |
5678 | }; |
5679 | ||
64c2ce8b AK |
5680 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
5681 | .prefix = XATTR_NAME_NFSV4_ACL, | |
5682 | .list = nfs4_xattr_list_nfs4_acl, | |
5683 | .get = nfs4_xattr_get_nfs4_acl, | |
5684 | .set = nfs4_xattr_set_nfs4_acl, | |
5685 | }; | |
5686 | ||
5687 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
5688 | &nfs4_xattr_nfs4_acl_handler, | |
5689 | NULL | |
5690 | }; | |
5691 | ||
1da177e4 LT |
5692 | /* |
5693 | * Local variables: | |
5694 | * c-basic-offset: 8 | |
5695 | * End: | |
5696 | */ |