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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> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 | 45 | #include <linux/sunrpc/clnt.h> |
8f70e95f | 46 | #include <linux/sunrpc/gss_api.h> |
1da177e4 LT |
47 | #include <linux/nfs.h> |
48 | #include <linux/nfs4.h> | |
49 | #include <linux/nfs_fs.h> | |
50 | #include <linux/nfs_page.h> | |
9b7160c5 | 51 | #include <linux/nfs_mount.h> |
1da177e4 | 52 | #include <linux/namei.h> |
02a913a7 | 53 | #include <linux/mount.h> |
99fe60d0 | 54 | #include <linux/module.h> |
6926afd1 | 55 | #include <linux/nfs_idmap.h> |
5a0ffe54 | 56 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 57 | #include <linux/xattr.h> |
c7a360b0 | 58 | #include <linux/utsname.h> |
d310310c | 59 | #include <linux/freezer.h> |
1da177e4 | 60 | |
4ce79717 | 61 | #include "nfs4_fs.h" |
1da177e4 | 62 | #include "delegation.h" |
101070ca | 63 | #include "internal.h" |
006ea73e | 64 | #include "iostat.h" |
fc931582 | 65 | #include "callback.h" |
b1f69b75 | 66 | #include "pnfs.h" |
f092075d | 67 | #include "netns.h" |
1da177e4 LT |
68 | |
69 | #define NFSDBG_FACILITY NFSDBG_PROC | |
70 | ||
2066fe89 | 71 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
72 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
73 | ||
a78cb57a TM |
74 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
75 | ||
ef159e91 TM |
76 | static unsigned short max_session_slots = NFS4_DEF_SLOT_TABLE_SIZE; |
77 | ||
cdd4e68b | 78 | struct nfs4_opendata; |
864472e9 | 79 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 80 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 81 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 82 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
81934ddb | 83 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
bae36241 | 84 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *); |
9936781d | 85 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
86 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
87 | struct nfs_fattr *fattr, struct iattr *sattr, | |
88 | struct nfs4_state *state); | |
f062eb6c | 89 | #ifdef CONFIG_NFS_V4_1 |
1cab0652 BS |
90 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *); |
91 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *); | |
f062eb6c | 92 | #endif |
1da177e4 | 93 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 94 | static int nfs4_map_errors(int err) |
1da177e4 | 95 | { |
52567b03 TM |
96 | if (err >= -1000) |
97 | return err; | |
98 | switch (err) { | |
99 | case -NFS4ERR_RESOURCE: | |
100 | return -EREMOTEIO; | |
7ebb9315 BS |
101 | case -NFS4ERR_WRONGSEC: |
102 | return -EPERM; | |
3ddeb7c5 TM |
103 | case -NFS4ERR_BADOWNER: |
104 | case -NFS4ERR_BADNAME: | |
105 | return -EINVAL; | |
fb13bfa7 TM |
106 | case -NFS4ERR_SHARE_DENIED: |
107 | return -EACCES; | |
52567b03 | 108 | default: |
1da177e4 | 109 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 110 | __func__, -err); |
52567b03 | 111 | break; |
1da177e4 | 112 | } |
52567b03 | 113 | return -EIO; |
1da177e4 LT |
114 | } |
115 | ||
116 | /* | |
117 | * This is our standard bitmap for GETATTR requests. | |
118 | */ | |
1549210f | 119 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
120 | FATTR4_WORD0_TYPE |
121 | | FATTR4_WORD0_CHANGE | |
122 | | FATTR4_WORD0_SIZE | |
123 | | FATTR4_WORD0_FSID | |
124 | | FATTR4_WORD0_FILEID, | |
125 | FATTR4_WORD1_MODE | |
126 | | FATTR4_WORD1_NUMLINKS | |
127 | | FATTR4_WORD1_OWNER | |
128 | | FATTR4_WORD1_OWNER_GROUP | |
129 | | FATTR4_WORD1_RAWDEV | |
130 | | FATTR4_WORD1_SPACE_USED | |
131 | | FATTR4_WORD1_TIME_ACCESS | |
132 | | FATTR4_WORD1_TIME_METADATA | |
133 | | FATTR4_WORD1_TIME_MODIFY | |
134 | }; | |
135 | ||
1549210f TM |
136 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
137 | FATTR4_WORD0_TYPE | |
138 | | FATTR4_WORD0_CHANGE | |
139 | | FATTR4_WORD0_SIZE | |
140 | | FATTR4_WORD0_FSID | |
141 | | FATTR4_WORD0_FILEID, | |
142 | FATTR4_WORD1_MODE | |
143 | | FATTR4_WORD1_NUMLINKS | |
144 | | FATTR4_WORD1_OWNER | |
145 | | FATTR4_WORD1_OWNER_GROUP | |
146 | | FATTR4_WORD1_RAWDEV | |
147 | | FATTR4_WORD1_SPACE_USED | |
148 | | FATTR4_WORD1_TIME_ACCESS | |
149 | | FATTR4_WORD1_TIME_METADATA | |
150 | | FATTR4_WORD1_TIME_MODIFY, | |
151 | FATTR4_WORD2_MDSTHRESHOLD | |
152 | }; | |
153 | ||
1da177e4 LT |
154 | const u32 nfs4_statfs_bitmap[2] = { |
155 | FATTR4_WORD0_FILES_AVAIL | |
156 | | FATTR4_WORD0_FILES_FREE | |
157 | | FATTR4_WORD0_FILES_TOTAL, | |
158 | FATTR4_WORD1_SPACE_AVAIL | |
159 | | FATTR4_WORD1_SPACE_FREE | |
160 | | FATTR4_WORD1_SPACE_TOTAL | |
161 | }; | |
162 | ||
4ce79717 | 163 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
164 | FATTR4_WORD0_MAXLINK |
165 | | FATTR4_WORD0_MAXNAME, | |
166 | 0 | |
167 | }; | |
168 | ||
dae100c2 | 169 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
170 | | FATTR4_WORD0_MAXREAD |
171 | | FATTR4_WORD0_MAXWRITE | |
172 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 173 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
174 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
175 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
176 | }; |
177 | ||
830b8e33 MN |
178 | const u32 nfs4_fs_locations_bitmap[2] = { |
179 | FATTR4_WORD0_TYPE | |
180 | | FATTR4_WORD0_CHANGE | |
181 | | FATTR4_WORD0_SIZE | |
182 | | FATTR4_WORD0_FSID | |
183 | | FATTR4_WORD0_FILEID | |
184 | | FATTR4_WORD0_FS_LOCATIONS, | |
185 | FATTR4_WORD1_MODE | |
186 | | FATTR4_WORD1_NUMLINKS | |
187 | | FATTR4_WORD1_OWNER | |
188 | | FATTR4_WORD1_OWNER_GROUP | |
189 | | FATTR4_WORD1_RAWDEV | |
190 | | FATTR4_WORD1_SPACE_USED | |
191 | | FATTR4_WORD1_TIME_ACCESS | |
192 | | FATTR4_WORD1_TIME_METADATA | |
193 | | FATTR4_WORD1_TIME_MODIFY | |
194 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
195 | }; | |
196 | ||
bc4785cd | 197 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
198 | struct nfs4_readdir_arg *readdir) |
199 | { | |
0dbb4c67 | 200 | __be32 *start, *p; |
1da177e4 LT |
201 | |
202 | BUG_ON(readdir->count < 80); | |
203 | if (cookie > 2) { | |
b7ef1956 | 204 | readdir->cookie = cookie; |
1da177e4 LT |
205 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
206 | return; | |
207 | } | |
208 | ||
209 | readdir->cookie = 0; | |
210 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
211 | if (cookie == 2) | |
212 | return; | |
213 | ||
214 | /* | |
215 | * NFSv4 servers do not return entries for '.' and '..' | |
216 | * Therefore, we fake these entries here. We let '.' | |
217 | * have cookie 0 and '..' have cookie 1. Note that | |
218 | * when talking to the server, we always send cookie 0 | |
219 | * instead of 1 or 2. | |
220 | */ | |
2b86ce2d | 221 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
222 | |
223 | if (cookie == 0) { | |
224 | *p++ = xdr_one; /* next */ | |
225 | *p++ = xdr_zero; /* cookie, first word */ | |
226 | *p++ = xdr_one; /* cookie, second word */ | |
227 | *p++ = xdr_one; /* entry len */ | |
228 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
229 | p++; | |
230 | *p++ = xdr_one; /* bitmap length */ | |
231 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
232 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 233 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
234 | } |
235 | ||
236 | *p++ = xdr_one; /* next */ | |
237 | *p++ = xdr_zero; /* cookie, first word */ | |
238 | *p++ = xdr_two; /* cookie, second word */ | |
239 | *p++ = xdr_two; /* entry len */ | |
240 | memcpy(p, "..\0\0", 4); /* entry */ | |
241 | p++; | |
242 | *p++ = xdr_one; /* bitmap length */ | |
243 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
244 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 245 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
246 | |
247 | readdir->pgbase = (char *)p - (char *)start; | |
248 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 249 | kunmap_atomic(start); |
1da177e4 LT |
250 | } |
251 | ||
65de872e TM |
252 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
253 | { | |
254 | int res; | |
255 | ||
256 | might_sleep(); | |
257 | ||
e005e804 | 258 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 259 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
260 | return res; |
261 | } | |
262 | ||
263 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
264 | { | |
265 | int res = 0; | |
266 | ||
267 | might_sleep(); | |
268 | ||
269 | if (*timeout <= 0) | |
270 | *timeout = NFS4_POLL_RETRY_MIN; | |
271 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
272 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 273 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
274 | if (fatal_signal_pending(current)) |
275 | res = -ERESTARTSYS; | |
276 | *timeout <<= 1; | |
277 | return res; | |
278 | } | |
279 | ||
280 | /* This is the error handling routine for processes that are allowed | |
281 | * to sleep. | |
282 | */ | |
b064eca2 | 283 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
284 | { |
285 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 286 | struct nfs4_state *state = exception->state; |
3114ea7a | 287 | struct inode *inode = exception->inode; |
65de872e TM |
288 | int ret = errorcode; |
289 | ||
290 | exception->retry = 0; | |
291 | switch(errorcode) { | |
292 | case 0: | |
293 | return 0; | |
3114ea7a | 294 | case -NFS4ERR_OPENMODE: |
14977489 | 295 | if (inode && nfs_have_delegation(inode, FMODE_READ)) { |
3114ea7a TM |
296 | nfs_inode_return_delegation(inode); |
297 | exception->retry = 1; | |
298 | return 0; | |
299 | } | |
300 | if (state == NULL) | |
301 | break; | |
302 | nfs4_schedule_stateid_recovery(server, state); | |
303 | goto wait_on_recovery; | |
a1d0b5ee | 304 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
305 | case -NFS4ERR_ADMIN_REVOKED: |
306 | case -NFS4ERR_BAD_STATEID: | |
9e33bed5 TM |
307 | if (state == NULL) |
308 | break; | |
14977489 | 309 | nfs_remove_bad_delegation(state->inode); |
0400a6b0 TM |
310 | nfs4_schedule_stateid_recovery(server, state); |
311 | goto wait_on_recovery; | |
0ced63d1 TM |
312 | case -NFS4ERR_EXPIRED: |
313 | if (state != NULL) | |
314 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 315 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 316 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
317 | nfs4_schedule_lease_recovery(clp); |
318 | goto wait_on_recovery; | |
03391693 | 319 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
320 | case -NFS4ERR_BADSESSION: |
321 | case -NFS4ERR_BADSLOT: | |
322 | case -NFS4ERR_BAD_HIGH_SLOT: | |
323 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
324 | case -NFS4ERR_DEADSESSION: | |
325 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
326 | case -NFS4ERR_SEQ_MISORDERED: | |
327 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
328 | errorcode); | |
9f594791 | 329 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
4745e315 | 330 | exception->retry = 1; |
b9179237 | 331 | break; |
03391693 | 332 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 333 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
334 | if (exception->timeout > HZ) { |
335 | /* We have retried a decent amount, time to | |
336 | * fail | |
337 | */ | |
338 | ret = -EBUSY; | |
339 | break; | |
340 | } | |
65de872e TM |
341 | case -NFS4ERR_GRACE: |
342 | case -NFS4ERR_DELAY: | |
2c643488 | 343 | case -EKEYEXPIRED: |
65de872e TM |
344 | ret = nfs4_delay(server->client, &exception->timeout); |
345 | if (ret != 0) | |
346 | break; | |
a8a4ae3a | 347 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
348 | case -NFS4ERR_OLD_STATEID: |
349 | exception->retry = 1; | |
b064eca2 TM |
350 | break; |
351 | case -NFS4ERR_BADOWNER: | |
352 | /* The following works around a Linux server bug! */ | |
353 | case -NFS4ERR_BADNAME: | |
354 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
355 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
356 | exception->retry = 1; | |
357 | printk(KERN_WARNING "NFS: v4 server %s " | |
358 | "does not accept raw " | |
359 | "uid/gids. " | |
360 | "Reenabling the idmapper.\n", | |
361 | server->nfs_client->cl_hostname); | |
362 | } | |
65de872e TM |
363 | } |
364 | /* We failed to handle the error */ | |
365 | return nfs4_map_errors(ret); | |
0400a6b0 | 366 | wait_on_recovery: |
a2c0b9e2 TM |
367 | ret = nfs4_wait_clnt_recover(clp); |
368 | if (ret == 0) | |
369 | exception->retry = 1; | |
370 | return ret; | |
65de872e TM |
371 | } |
372 | ||
373 | ||
452e9352 | 374 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 375 | { |
1da177e4 LT |
376 | spin_lock(&clp->cl_lock); |
377 | if (time_before(clp->cl_last_renewal,timestamp)) | |
378 | clp->cl_last_renewal = timestamp; | |
379 | spin_unlock(&clp->cl_lock); | |
380 | } | |
381 | ||
452e9352 TM |
382 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
383 | { | |
384 | do_renew_lease(server->nfs_client, timestamp); | |
385 | } | |
386 | ||
cccef3b9 AA |
387 | #if defined(CONFIG_NFS_V4_1) |
388 | ||
e2c4ab3c AA |
389 | /* |
390 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
391 | * | |
392 | * freeing a slot is trivially done by clearing its respective bit | |
393 | * in the bitmap. | |
394 | * If the freed slotid equals highest_used_slotid we want to update it | |
395 | * so that the server would be able to size down the slot table if needed, | |
396 | * otherwise we know that the highest_used_slotid is still in use. | |
397 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
398 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
399 | * highest slotid in use. | |
45d43c29 | 400 | * If none found, highest_used_slotid is set to NFS4_NO_SLOT. |
35dc1d74 TM |
401 | * |
402 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
403 | */ |
404 | static void | |
45d43c29 | 405 | nfs4_free_slot(struct nfs4_slot_table *tbl, u32 slotid) |
e2c4ab3c | 406 | { |
45d43c29 | 407 | BUG_ON(slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
408 | /* clear used bit in bitmap */ |
409 | __clear_bit(slotid, tbl->used_slots); | |
410 | ||
411 | /* update highest_used_slotid when it is freed */ | |
412 | if (slotid == tbl->highest_used_slotid) { | |
413 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 414 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
415 | tbl->highest_used_slotid = slotid; |
416 | else | |
45d43c29 | 417 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
e2c4ab3c | 418 | } |
45d43c29 TM |
419 | dprintk("%s: slotid %u highest_used_slotid %d\n", __func__, |
420 | slotid, tbl->highest_used_slotid); | |
e2c4ab3c AA |
421 | } |
422 | ||
961a828d TM |
423 | bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) |
424 | { | |
425 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
426 | return true; | |
e2c4ab3c AA |
427 | } |
428 | ||
3bfb0fc5 | 429 | /* |
42acd021 | 430 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 431 | */ |
42acd021 | 432 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 433 | { |
a2118c33 | 434 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
961a828d TM |
435 | rpc_wake_up_first(&ses->fc_slot_table.slot_tbl_waitq, |
436 | nfs4_set_task_privileged, NULL); | |
3bfb0fc5 AB |
437 | return; |
438 | } | |
439 | ||
45d43c29 | 440 | if (ses->fc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
3bfb0fc5 AB |
441 | return; |
442 | ||
42acd021 AA |
443 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
444 | complete(&ses->fc_slot_table.complete); | |
445 | } | |
446 | ||
447 | /* | |
448 | * Signal state manager thread if session back channel is drained | |
449 | */ | |
450 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
451 | { | |
452 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
45d43c29 | 453 | ses->bc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
42acd021 AA |
454 | return; |
455 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
456 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
457 | } |
458 | ||
d185a334 | 459 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
460 | { |
461 | struct nfs4_slot_table *tbl; | |
462 | ||
d185a334 | 463 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 464 | if (!res->sr_slot) { |
13615871 AA |
465 | /* just wake up the next guy waiting since |
466 | * we may have not consumed a slot after all */ | |
691daf3b | 467 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 468 | return; |
13615871 | 469 | } |
ea028ac9 | 470 | |
35dc1d74 | 471 | spin_lock(&tbl->slot_tbl_lock); |
aabd0b40 | 472 | nfs4_free_slot(tbl, res->sr_slot - tbl->slots); |
42acd021 | 473 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 474 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 475 | res->sr_slot = NULL; |
13615871 AA |
476 | } |
477 | ||
14516c3a | 478 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
479 | { |
480 | unsigned long timestamp; | |
14516c3a | 481 | struct nfs_client *clp; |
b0df806c AA |
482 | |
483 | /* | |
484 | * sr_status remains 1 if an RPC level error occurred. The server | |
485 | * may or may not have processed the sequence operation.. | |
486 | * Proceed as if the server received and processed the sequence | |
487 | * operation. | |
488 | */ | |
489 | if (res->sr_status == 1) | |
490 | res->sr_status = NFS_OK; | |
491 | ||
468f8613 BS |
492 | /* don't increment the sequence number if the task wasn't sent */ |
493 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
494 | goto out; |
495 | ||
691daf3b | 496 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
497 | switch (res->sr_status) { |
498 | case 0: | |
b0df806c | 499 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 500 | ++res->sr_slot->seq_nr; |
b0df806c | 501 | timestamp = res->sr_renewal_time; |
14516c3a | 502 | clp = res->sr_session->clp; |
452e9352 | 503 | do_renew_lease(clp, timestamp); |
0629e370 | 504 | /* Check sequence flags */ |
b4410c2f TM |
505 | if (res->sr_status_flags != 0) |
506 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
507 | break; |
508 | case -NFS4ERR_DELAY: | |
509 | /* The server detected a resend of the RPC call and | |
510 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
511 | * of RFC5661. | |
512 | */ | |
12364a4f | 513 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
514 | __func__, |
515 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
516 | res->sr_slot->seq_nr); | |
14516c3a TM |
517 | goto out_retry; |
518 | default: | |
519 | /* Just update the slot sequence no. */ | |
dfb4f309 | 520 | ++res->sr_slot->seq_nr; |
b0df806c AA |
521 | } |
522 | out: | |
523 | /* The session may be reset by one of the error handlers. */ | |
524 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 525 | nfs41_sequence_free_slot(res); |
14516c3a TM |
526 | return 1; |
527 | out_retry: | |
d05dd4e9 | 528 | if (!rpc_restart_call(task)) |
14516c3a TM |
529 | goto out; |
530 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
531 | return 0; | |
b0df806c AA |
532 | } |
533 | ||
14516c3a TM |
534 | static int nfs4_sequence_done(struct rpc_task *task, |
535 | struct nfs4_sequence_res *res) | |
df896455 | 536 | { |
14516c3a TM |
537 | if (res->sr_session == NULL) |
538 | return 1; | |
539 | return nfs41_sequence_done(task, res); | |
df896455 TM |
540 | } |
541 | ||
510b8175 BH |
542 | /* |
543 | * nfs4_find_slot - efficiently look for a free slot | |
544 | * | |
545 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
546 | * If found, we mark the slot as used, update the highest_used_slotid, | |
547 | * and respectively set up the sequence operation args. | |
45d43c29 | 548 | * The slot number is returned if found, or NFS4_NO_SLOT otherwise. |
fbcd4abc AA |
549 | * |
550 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 | 551 | */ |
45d43c29 | 552 | static u32 |
40ead580 | 553 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 | 554 | { |
45d43c29 TM |
555 | u32 slotid; |
556 | u32 ret_id = NFS4_NO_SLOT; | |
510b8175 | 557 | |
45d43c29 | 558 | dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n", |
510b8175 BH |
559 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, |
560 | tbl->max_slots); | |
561 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
562 | if (slotid >= tbl->max_slots) | |
563 | goto out; | |
564 | __set_bit(slotid, tbl->used_slots); | |
45d43c29 TM |
565 | if (slotid > tbl->highest_used_slotid || |
566 | tbl->highest_used_slotid == NFS4_NO_SLOT) | |
510b8175 BH |
567 | tbl->highest_used_slotid = slotid; |
568 | ret_id = slotid; | |
569 | out: | |
570 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
571 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
572 | return ret_id; |
573 | } | |
574 | ||
9d12b216 TM |
575 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
576 | struct nfs4_sequence_res *res, int cache_reply) | |
577 | { | |
578 | args->sa_session = NULL; | |
579 | args->sa_cache_this = 0; | |
580 | if (cache_reply) | |
581 | args->sa_cache_this = 1; | |
582 | res->sr_session = NULL; | |
583 | res->sr_slot = NULL; | |
584 | } | |
585 | ||
dc70d7b3 | 586 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
587 | struct nfs4_sequence_args *args, |
588 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
589 | struct rpc_task *task) |
590 | { | |
fbcd4abc AA |
591 | struct nfs4_slot *slot; |
592 | struct nfs4_slot_table *tbl; | |
45d43c29 | 593 | u32 slotid; |
fbcd4abc AA |
594 | |
595 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 596 | /* slot already allocated? */ |
dfb4f309 | 597 | if (res->sr_slot != NULL) |
ce5039c1 AA |
598 | return 0; |
599 | ||
fbcd4abc AA |
600 | tbl = &session->fc_slot_table; |
601 | ||
602 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 603 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 604 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 605 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 606 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 607 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 608 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 609 | return -EAGAIN; |
b069d94a AA |
610 | } |
611 | ||
689cf5c1 AB |
612 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
613 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
614 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
615 | spin_unlock(&tbl->slot_tbl_lock); | |
616 | dprintk("%s enforce FIFO order\n", __func__); | |
617 | return -EAGAIN; | |
618 | } | |
619 | ||
40ead580 | 620 | slotid = nfs4_find_slot(tbl); |
45d43c29 | 621 | if (slotid == NFS4_NO_SLOT) { |
fbcd4abc AA |
622 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
623 | spin_unlock(&tbl->slot_tbl_lock); | |
624 | dprintk("<-- %s: no free slots\n", __func__); | |
625 | return -EAGAIN; | |
626 | } | |
627 | spin_unlock(&tbl->slot_tbl_lock); | |
628 | ||
689cf5c1 | 629 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 630 | slot = tbl->slots + slotid; |
99fe60d0 | 631 | args->sa_session = session; |
fbcd4abc | 632 | args->sa_slotid = slotid; |
fbcd4abc AA |
633 | |
634 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
635 | ||
99fe60d0 | 636 | res->sr_session = session; |
dfb4f309 | 637 | res->sr_slot = slot; |
fbcd4abc | 638 | res->sr_renewal_time = jiffies; |
2a6e26cd | 639 | res->sr_status_flags = 0; |
fbcd4abc AA |
640 | /* |
641 | * sr_status is only set in decode_sequence, and so will remain | |
642 | * set to 1 if an rpc level failure occurs. | |
643 | */ | |
644 | res->sr_status = 1; | |
ce5039c1 AA |
645 | return 0; |
646 | } | |
dc70d7b3 | 647 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 648 | |
035168ab | 649 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
650 | struct nfs4_sequence_args *args, |
651 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
652 | struct rpc_task *task) |
653 | { | |
035168ab | 654 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
655 | int ret = 0; |
656 | ||
9d12b216 | 657 | if (session == NULL) |
035168ab | 658 | goto out; |
035168ab | 659 | |
12364a4f | 660 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
661 | __func__, session->clp, session, res->sr_slot ? |
662 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 663 | |
9d12b216 | 664 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
665 | out: |
666 | dprintk("<-- %s status=%d\n", __func__, ret); | |
667 | return ret; | |
668 | } | |
669 | ||
670 | struct nfs41_call_sync_data { | |
035168ab | 671 | const struct nfs_server *seq_server; |
ce5039c1 AA |
672 | struct nfs4_sequence_args *seq_args; |
673 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
674 | }; |
675 | ||
676 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
677 | { | |
678 | struct nfs41_call_sync_data *data = calldata; | |
679 | ||
035168ab TM |
680 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
681 | ||
682 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
9d12b216 | 683 | data->seq_res, task)) |
ce5039c1 AA |
684 | return; |
685 | rpc_call_start(task); | |
686 | } | |
687 | ||
b257957e AB |
688 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
689 | { | |
690 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
691 | nfs41_call_sync_prepare(task, calldata); | |
692 | } | |
693 | ||
69ab40c4 AA |
694 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
695 | { | |
696 | struct nfs41_call_sync_data *data = calldata; | |
697 | ||
14516c3a | 698 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
699 | } |
700 | ||
17280175 | 701 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 702 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 703 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
704 | }; |
705 | ||
17280175 | 706 | static const struct rpc_call_ops nfs41_call_priv_sync_ops = { |
b257957e AB |
707 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, |
708 | .rpc_call_done = nfs41_call_sync_done, | |
709 | }; | |
710 | ||
7c513058 BS |
711 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
712 | struct nfs_server *server, | |
ce5039c1 AA |
713 | struct rpc_message *msg, |
714 | struct nfs4_sequence_args *args, | |
715 | struct nfs4_sequence_res *res, | |
b257957e | 716 | int privileged) |
ce5039c1 AA |
717 | { |
718 | int ret; | |
719 | struct rpc_task *task; | |
720 | struct nfs41_call_sync_data data = { | |
035168ab | 721 | .seq_server = server, |
ce5039c1 AA |
722 | .seq_args = args, |
723 | .seq_res = res, | |
ce5039c1 AA |
724 | }; |
725 | struct rpc_task_setup task_setup = { | |
7c513058 | 726 | .rpc_client = clnt, |
ce5039c1 AA |
727 | .rpc_message = msg, |
728 | .callback_ops = &nfs41_call_sync_ops, | |
729 | .callback_data = &data | |
730 | }; | |
731 | ||
b257957e AB |
732 | if (privileged) |
733 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
734 | task = rpc_run_task(&task_setup); |
735 | if (IS_ERR(task)) | |
736 | ret = PTR_ERR(task); | |
737 | else { | |
738 | ret = task->tk_status; | |
739 | rpc_put_task(task); | |
740 | } | |
741 | return ret; | |
742 | } | |
743 | ||
7c513058 BS |
744 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
745 | struct nfs_server *server, | |
cccef3b9 AA |
746 | struct rpc_message *msg, |
747 | struct nfs4_sequence_args *args, | |
748 | struct nfs4_sequence_res *res, | |
749 | int cache_reply) | |
750 | { | |
9d12b216 TM |
751 | nfs41_init_sequence(args, res, cache_reply); |
752 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); | |
cccef3b9 AA |
753 | } |
754 | ||
df896455 | 755 | #else |
9d12b216 TM |
756 | static inline |
757 | void nfs41_init_sequence(struct nfs4_sequence_args *args, | |
758 | struct nfs4_sequence_res *res, int cache_reply) | |
759 | { | |
760 | } | |
761 | ||
14516c3a TM |
762 | static int nfs4_sequence_done(struct rpc_task *task, |
763 | struct nfs4_sequence_res *res) | |
df896455 | 764 | { |
14516c3a | 765 | return 1; |
df896455 | 766 | } |
cccef3b9 AA |
767 | #endif /* CONFIG_NFS_V4_1 */ |
768 | ||
7c513058 BS |
769 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
770 | struct nfs_server *server, | |
cccef3b9 AA |
771 | struct rpc_message *msg, |
772 | struct nfs4_sequence_args *args, | |
773 | struct nfs4_sequence_res *res, | |
774 | int cache_reply) | |
775 | { | |
9d12b216 | 776 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 777 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
778 | } |
779 | ||
e73b83f2 | 780 | static inline |
7c513058 BS |
781 | int nfs4_call_sync(struct rpc_clnt *clnt, |
782 | struct nfs_server *server, | |
e73b83f2 BS |
783 | struct rpc_message *msg, |
784 | struct nfs4_sequence_args *args, | |
785 | struct nfs4_sequence_res *res, | |
786 | int cache_reply) | |
787 | { | |
7c513058 BS |
788 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
789 | args, res, cache_reply); | |
e73b83f2 | 790 | } |
cccef3b9 | 791 | |
38478b24 | 792 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 793 | { |
38478b24 | 794 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 795 | |
38478b24 | 796 | spin_lock(&dir->i_lock); |
359d7d1c | 797 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 798 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 799 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 800 | dir->i_version = cinfo->after; |
38478b24 | 801 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
802 | } |
803 | ||
e56e0b78 | 804 | struct nfs4_opendata { |
c6d00e63 | 805 | struct kref kref; |
e56e0b78 TM |
806 | struct nfs_openargs o_arg; |
807 | struct nfs_openres o_res; | |
cdd4e68b TM |
808 | struct nfs_open_confirmargs c_arg; |
809 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
810 | struct nfs4_string owner_name; |
811 | struct nfs4_string group_name; | |
e56e0b78 | 812 | struct nfs_fattr f_attr; |
e56e0b78 | 813 | struct dentry *dir; |
82a2c1b7 | 814 | struct dentry *dentry; |
e56e0b78 | 815 | struct nfs4_state_owner *owner; |
aac00a8d | 816 | struct nfs4_state *state; |
e56e0b78 | 817 | struct iattr attrs; |
26e976a8 | 818 | unsigned long timestamp; |
3e309914 | 819 | unsigned int rpc_done : 1; |
24ac23ab TM |
820 | int rpc_status; |
821 | int cancelled; | |
e56e0b78 TM |
822 | }; |
823 | ||
2ced46c2 TM |
824 | |
825 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
826 | { | |
827 | p->o_res.f_attr = &p->f_attr; | |
c1d51931 TM |
828 | p->o_res.seqid = p->o_arg.seqid; |
829 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
830 | p->o_res.server = p->o_arg.server; |
831 | nfs_fattr_init(&p->f_attr); | |
6926afd1 | 832 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
833 | } |
834 | ||
82a2c1b7 | 835 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 836 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
837 | const struct iattr *attrs, |
838 | gfp_t gfp_mask) | |
e56e0b78 | 839 | { |
82a2c1b7 | 840 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
841 | struct inode *dir = parent->d_inode; |
842 | struct nfs_server *server = NFS_SERVER(dir); | |
843 | struct nfs4_opendata *p; | |
844 | ||
8535b2be | 845 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
846 | if (p == NULL) |
847 | goto err; | |
8535b2be | 848 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
849 | if (p->o_arg.seqid == NULL) |
850 | goto err_free; | |
82a2c1b7 AV |
851 | nfs_sb_active(dentry->d_sb); |
852 | p->dentry = dget(dentry); | |
e56e0b78 TM |
853 | p->dir = parent; |
854 | p->owner = sp; | |
855 | atomic_inc(&sp->so_count); | |
856 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
857 | p->o_arg.open_flags = flags; |
858 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 859 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
860 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
861 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 862 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
863 | p->o_arg.server = server; |
864 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 865 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
e56e0b78 | 866 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 867 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 868 | __be32 verf[2]; |
d77d76ff | 869 | |
e56e0b78 TM |
870 | p->o_arg.u.attrs = &p->attrs; |
871 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
872 | |
873 | verf[0] = jiffies; | |
874 | verf[1] = current->pid; | |
875 | memcpy(p->o_arg.u.verifier.data, verf, | |
876 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 877 | } |
cdd4e68b TM |
878 | p->c_arg.fh = &p->o_res.fh; |
879 | p->c_arg.stateid = &p->o_res.stateid; | |
880 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 881 | nfs4_init_opendata_res(p); |
c6d00e63 | 882 | kref_init(&p->kref); |
e56e0b78 TM |
883 | return p; |
884 | err_free: | |
885 | kfree(p); | |
886 | err: | |
887 | dput(parent); | |
888 | return NULL; | |
889 | } | |
890 | ||
c6d00e63 | 891 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 892 | { |
c6d00e63 TM |
893 | struct nfs4_opendata *p = container_of(kref, |
894 | struct nfs4_opendata, kref); | |
82a2c1b7 | 895 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
896 | |
897 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
898 | if (p->state != NULL) |
899 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
900 | nfs4_put_state_owner(p->owner); |
901 | dput(p->dir); | |
82a2c1b7 AV |
902 | dput(p->dentry); |
903 | nfs_sb_deactive(sb); | |
6926afd1 | 904 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
905 | kfree(p); |
906 | } | |
907 | ||
908 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
909 | { | |
910 | if (p != NULL) | |
911 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
912 | } |
913 | ||
06f814a3 TM |
914 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
915 | { | |
06f814a3 TM |
916 | int ret; |
917 | ||
06f814a3 | 918 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
919 | return ret; |
920 | } | |
921 | ||
dc0b027d | 922 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
923 | { |
924 | int ret = 0; | |
dc0b027d | 925 | |
536e43d1 | 926 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
927 | goto out; |
928 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 929 | case FMODE_READ: |
88069f77 TM |
930 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
931 | && state->n_rdonly != 0; | |
6ee41268 TM |
932 | break; |
933 | case FMODE_WRITE: | |
88069f77 TM |
934 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
935 | && state->n_wronly != 0; | |
6ee41268 TM |
936 | break; |
937 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
938 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
939 | && state->n_rdwr != 0; | |
6ee41268 | 940 | } |
dc0b027d | 941 | out: |
6ee41268 TM |
942 | return ret; |
943 | } | |
944 | ||
dc0b027d | 945 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 946 | { |
652f89f6 TM |
947 | if (delegation == NULL) |
948 | return 0; | |
dc0b027d | 949 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 950 | return 0; |
15c831bf | 951 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 952 | return 0; |
b7391f44 | 953 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
954 | return 1; |
955 | } | |
956 | ||
dc0b027d | 957 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 958 | { |
dc0b027d | 959 | switch (fmode) { |
e7616923 TM |
960 | case FMODE_WRITE: |
961 | state->n_wronly++; | |
962 | break; | |
963 | case FMODE_READ: | |
964 | state->n_rdonly++; | |
965 | break; | |
966 | case FMODE_READ|FMODE_WRITE: | |
967 | state->n_rdwr++; | |
968 | } | |
dc0b027d | 969 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
970 | } |
971 | ||
dc0b027d | 972 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
973 | { |
974 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
975 | nfs4_stateid_copy(&state->stateid, stateid); |
976 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 977 | switch (fmode) { |
003707c7 TM |
978 | case FMODE_READ: |
979 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
980 | break; | |
981 | case FMODE_WRITE: | |
982 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
983 | break; | |
984 | case FMODE_READ|FMODE_WRITE: | |
985 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
986 | } | |
e7616923 TM |
987 | } |
988 | ||
dc0b027d | 989 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 990 | { |
8bda4e4c | 991 | write_seqlock(&state->seqlock); |
dc0b027d | 992 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 993 | write_sequnlock(&state->seqlock); |
003707c7 TM |
994 | } |
995 | ||
dc0b027d | 996 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 997 | { |
8bda4e4c TM |
998 | /* |
999 | * Protect the call to nfs4_state_set_mode_locked and | |
1000 | * serialise the stateid update | |
1001 | */ | |
1002 | write_seqlock(&state->seqlock); | |
003707c7 | 1003 | if (deleg_stateid != NULL) { |
f597c537 | 1004 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1005 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1006 | } | |
1007 | if (open_stateid != NULL) | |
dc0b027d | 1008 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1009 | write_sequnlock(&state->seqlock); |
1010 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1011 | update_open_stateflags(state, fmode); |
ec073428 | 1012 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1013 | } |
1014 | ||
dc0b027d | 1015 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1016 | { |
1017 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1018 | struct nfs_delegation *deleg_cur; | |
1019 | int ret = 0; | |
1020 | ||
dc0b027d | 1021 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1022 | |
1023 | rcu_read_lock(); | |
1024 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1025 | if (deleg_cur == NULL) | |
1026 | goto no_delegation; | |
1027 | ||
1028 | spin_lock(&deleg_cur->lock); | |
1029 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 1030 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1031 | goto no_delegation_unlock; |
1032 | ||
1033 | if (delegation == NULL) | |
1034 | delegation = &deleg_cur->stateid; | |
f597c537 | 1035 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1036 | goto no_delegation_unlock; |
1037 | ||
b7391f44 | 1038 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1039 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1040 | ret = 1; |
1041 | no_delegation_unlock: | |
1042 | spin_unlock(&deleg_cur->lock); | |
1043 | no_delegation: | |
1044 | rcu_read_unlock(); | |
1045 | ||
1046 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1047 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1048 | ret = 1; |
1049 | } | |
1050 | ||
1051 | return ret; | |
1052 | } | |
1053 | ||
1054 | ||
dc0b027d | 1055 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1056 | { |
1057 | struct nfs_delegation *delegation; | |
1058 | ||
1059 | rcu_read_lock(); | |
1060 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1061 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1062 | rcu_read_unlock(); |
1063 | return; | |
1064 | } | |
1065 | rcu_read_unlock(); | |
1066 | nfs_inode_return_delegation(inode); | |
1067 | } | |
1068 | ||
6ee41268 | 1069 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1070 | { |
1071 | struct nfs4_state *state = opendata->state; | |
1072 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1073 | struct nfs_delegation *delegation; | |
536e43d1 | 1074 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1075 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1076 | nfs4_stateid stateid; |
1077 | int ret = -EAGAIN; | |
1078 | ||
aac00a8d | 1079 | for (;;) { |
dc0b027d | 1080 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1081 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1082 | if (can_open_cached(state, fmode, open_mode)) { |
1083 | update_open_stateflags(state, fmode); | |
6ee41268 | 1084 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1085 | goto out_return_state; |
1086 | } | |
1087 | spin_unlock(&state->owner->so_lock); | |
1088 | } | |
34310430 TM |
1089 | rcu_read_lock(); |
1090 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1091 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1092 | rcu_read_unlock(); |
aac00a8d | 1093 | break; |
34310430 | 1094 | } |
aac00a8d | 1095 | /* Save the delegation */ |
f597c537 | 1096 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1097 | rcu_read_unlock(); |
af22f94a | 1098 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1099 | if (ret != 0) |
1100 | goto out; | |
1101 | ret = -EAGAIN; | |
34310430 TM |
1102 | |
1103 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1104 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1105 | goto out_return_state; |
aac00a8d | 1106 | } |
aac00a8d TM |
1107 | out: |
1108 | return ERR_PTR(ret); | |
1109 | out_return_state: | |
1110 | atomic_inc(&state->count); | |
1111 | return state; | |
1112 | } | |
1113 | ||
24ac23ab TM |
1114 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1115 | { | |
1116 | struct inode *inode; | |
1117 | struct nfs4_state *state = NULL; | |
003707c7 | 1118 | struct nfs_delegation *delegation; |
1b370bc2 | 1119 | int ret; |
24ac23ab | 1120 | |
aac00a8d | 1121 | if (!data->rpc_done) { |
6ee41268 | 1122 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1123 | goto out; |
1124 | } | |
1125 | ||
1b370bc2 | 1126 | ret = -EAGAIN; |
24ac23ab | 1127 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1128 | goto err; |
24ac23ab | 1129 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1130 | ret = PTR_ERR(inode); |
03f28e3a | 1131 | if (IS_ERR(inode)) |
1b370bc2 TM |
1132 | goto err; |
1133 | ret = -ENOMEM; | |
24ac23ab TM |
1134 | state = nfs4_get_open_state(inode, data->owner); |
1135 | if (state == NULL) | |
1b370bc2 | 1136 | goto err_put_inode; |
549d6ed5 | 1137 | if (data->o_res.delegation_type != 0) { |
4e0038b6 | 1138 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; |
549d6ed5 TM |
1139 | int delegation_flags = 0; |
1140 | ||
003707c7 TM |
1141 | rcu_read_lock(); |
1142 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1143 | if (delegation) | |
1144 | delegation_flags = delegation->flags; | |
1145 | rcu_read_unlock(); | |
652f89f6 TM |
1146 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { |
1147 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1148 | "returning a delegation for " | |
1149 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
4e0038b6 | 1150 | clp->cl_hostname); |
652f89f6 | 1151 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1152 | nfs_inode_set_delegation(state->inode, |
1153 | data->owner->so_cred, | |
1154 | &data->o_res); | |
1155 | else | |
1156 | nfs_inode_reclaim_delegation(state->inode, | |
1157 | data->owner->so_cred, | |
1158 | &data->o_res); | |
1159 | } | |
34310430 TM |
1160 | |
1161 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1162 | data->o_arg.fmode); |
24ac23ab | 1163 | iput(inode); |
aac00a8d | 1164 | out: |
24ac23ab | 1165 | return state; |
1b370bc2 TM |
1166 | err_put_inode: |
1167 | iput(inode); | |
1168 | err: | |
1169 | return ERR_PTR(ret); | |
24ac23ab TM |
1170 | } |
1171 | ||
864472e9 TM |
1172 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1173 | { | |
1174 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1175 | struct nfs_open_context *ctx; | |
1176 | ||
1177 | spin_lock(&state->inode->i_lock); | |
1178 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1179 | if (ctx->state != state) | |
1180 | continue; | |
1181 | get_nfs_open_context(ctx); | |
1182 | spin_unlock(&state->inode->i_lock); | |
1183 | return ctx; | |
1184 | } | |
1185 | spin_unlock(&state->inode->i_lock); | |
1186 | return ERR_PTR(-ENOENT); | |
1187 | } | |
1188 | ||
6f220ed5 TM |
1189 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1190 | { | |
1191 | struct nfs4_opendata *opendata; | |
1192 | ||
3d4ff43d | 1193 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1194 | if (opendata == NULL) |
1195 | return ERR_PTR(-ENOMEM); | |
1196 | opendata->state = state; | |
1197 | atomic_inc(&state->count); | |
1198 | return opendata; | |
1199 | } | |
1200 | ||
dc0b027d | 1201 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1202 | { |
2ced46c2 | 1203 | struct nfs4_state *newstate; |
864472e9 TM |
1204 | int ret; |
1205 | ||
dc0b027d TM |
1206 | opendata->o_arg.open_flags = 0; |
1207 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1208 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1209 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1210 | nfs4_init_opendata_res(opendata); | |
b257957e | 1211 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1212 | if (ret != 0) |
1213 | return ret; | |
2ced46c2 | 1214 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1215 | if (IS_ERR(newstate)) |
1216 | return PTR_ERR(newstate); | |
643168c2 | 1217 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1218 | *res = newstate; |
864472e9 TM |
1219 | return 0; |
1220 | } | |
1221 | ||
1222 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1223 | { | |
864472e9 | 1224 | struct nfs4_state *newstate; |
864472e9 TM |
1225 | int ret; |
1226 | ||
1227 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1228 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1229 | smp_rmb(); |
1230 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1231 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1232 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1233 | if (ret != 0) |
1234 | return ret; | |
2ced46c2 TM |
1235 | if (newstate != state) |
1236 | return -ESTALE; | |
864472e9 TM |
1237 | } |
1238 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1239 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1240 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1241 | if (ret != 0) |
1242 | return ret; | |
2ced46c2 TM |
1243 | if (newstate != state) |
1244 | return -ESTALE; | |
864472e9 TM |
1245 | } |
1246 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1247 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1248 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1249 | if (ret != 0) |
1250 | return ret; | |
2ced46c2 TM |
1251 | if (newstate != state) |
1252 | return -ESTALE; | |
864472e9 | 1253 | } |
1ac7e2fd TM |
1254 | /* |
1255 | * We may have performed cached opens for all three recoveries. | |
1256 | * Check if we need to update the current stateid. | |
1257 | */ | |
1258 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1259 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1260 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1261 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1262 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1263 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1264 | } |
864472e9 TM |
1265 | return 0; |
1266 | } | |
1267 | ||
1da177e4 LT |
1268 | /* |
1269 | * OPEN_RECLAIM: | |
1270 | * reclaim state on the server after a reboot. | |
1da177e4 | 1271 | */ |
539cd03a | 1272 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1273 | { |
1ac7e2fd | 1274 | struct nfs_delegation *delegation; |
864472e9 | 1275 | struct nfs4_opendata *opendata; |
dc0b027d | 1276 | fmode_t delegation_type = 0; |
1da177e4 LT |
1277 | int status; |
1278 | ||
6f220ed5 TM |
1279 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1280 | if (IS_ERR(opendata)) | |
1281 | return PTR_ERR(opendata); | |
864472e9 TM |
1282 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1283 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1284 | rcu_read_lock(); |
1285 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1286 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1287 | delegation_type = delegation->type; |
1ac7e2fd | 1288 | rcu_read_unlock(); |
864472e9 TM |
1289 | opendata->o_arg.u.delegation_type = delegation_type; |
1290 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1291 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1292 | return status; |
1293 | } | |
1294 | ||
539cd03a | 1295 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1296 | { |
1297 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1298 | struct nfs4_exception exception = { }; | |
1299 | int err; | |
1300 | do { | |
539cd03a | 1301 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1302 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1303 | break; |
1304 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1305 | } while (exception.retry); |
1306 | return err; | |
1307 | } | |
1308 | ||
864472e9 TM |
1309 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1310 | { | |
1311 | struct nfs_open_context *ctx; | |
1312 | int ret; | |
1313 | ||
1314 | ctx = nfs4_state_find_open_context(state); | |
1315 | if (IS_ERR(ctx)) | |
1316 | return PTR_ERR(ctx); | |
539cd03a | 1317 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1318 | put_nfs_open_context(ctx); |
1319 | return ret; | |
1320 | } | |
1321 | ||
13437e12 | 1322 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1323 | { |
e56e0b78 | 1324 | struct nfs4_opendata *opendata; |
864472e9 | 1325 | int ret; |
1da177e4 | 1326 | |
6f220ed5 TM |
1327 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1328 | if (IS_ERR(opendata)) | |
1329 | return PTR_ERR(opendata); | |
e56e0b78 | 1330 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1331 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1332 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1333 | nfs4_opendata_put(opendata); |
864472e9 | 1334 | return ret; |
1da177e4 LT |
1335 | } |
1336 | ||
13437e12 | 1337 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1338 | { |
1339 | struct nfs4_exception exception = { }; | |
539cd03a | 1340 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1341 | int err; |
1342 | do { | |
13437e12 | 1343 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1344 | switch (err) { |
1345 | case 0: | |
965b5d67 TM |
1346 | case -ENOENT: |
1347 | case -ESTALE: | |
1348 | goto out; | |
bcfa49f6 RL |
1349 | case -NFS4ERR_BADSESSION: |
1350 | case -NFS4ERR_BADSLOT: | |
1351 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1352 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1353 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 1354 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
bcfa49f6 | 1355 | goto out; |
1da177e4 LT |
1356 | case -NFS4ERR_STALE_CLIENTID: |
1357 | case -NFS4ERR_STALE_STATEID: | |
1358 | case -NFS4ERR_EXPIRED: | |
1359 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1360 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1361 | goto out; |
1362 | case -ERESTARTSYS: | |
1363 | /* | |
1364 | * The show must go on: exit, but mark the | |
1365 | * stateid as needing recovery. | |
1366 | */ | |
a1d0b5ee | 1367 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1368 | case -NFS4ERR_ADMIN_REVOKED: |
1369 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1370 | nfs_inode_find_state_and_recover(state->inode, |
1371 | stateid); | |
0400a6b0 | 1372 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1373 | case -EKEYEXPIRED: |
1374 | /* | |
1375 | * User RPCSEC_GSS context has expired. | |
1376 | * We cannot recover this stateid now, so | |
1377 | * skip it and allow recovery thread to | |
1378 | * proceed. | |
1379 | */ | |
965b5d67 TM |
1380 | case -ENOMEM: |
1381 | err = 0; | |
1382 | goto out; | |
1da177e4 LT |
1383 | } |
1384 | err = nfs4_handle_exception(server, err, &exception); | |
1385 | } while (exception.retry); | |
965b5d67 | 1386 | out: |
1da177e4 LT |
1387 | return err; |
1388 | } | |
1389 | ||
cdd4e68b TM |
1390 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1391 | { | |
1392 | struct nfs4_opendata *data = calldata; | |
1393 | ||
1394 | data->rpc_status = task->tk_status; | |
26e976a8 | 1395 | if (data->rpc_status == 0) { |
f597c537 | 1396 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1397 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1398 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1399 | data->rpc_done = 1; |
26e976a8 | 1400 | } |
cdd4e68b TM |
1401 | } |
1402 | ||
1403 | static void nfs4_open_confirm_release(void *calldata) | |
1404 | { | |
1405 | struct nfs4_opendata *data = calldata; | |
1406 | struct nfs4_state *state = NULL; | |
1407 | ||
1408 | /* If this request hasn't been cancelled, do nothing */ | |
1409 | if (data->cancelled == 0) | |
1410 | goto out_free; | |
1411 | /* In case of error, no cleanup! */ | |
3e309914 | 1412 | if (!data->rpc_done) |
cdd4e68b | 1413 | goto out_free; |
cdd4e68b | 1414 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1415 | if (!IS_ERR(state)) |
643168c2 | 1416 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1417 | out_free: |
c6d00e63 | 1418 | nfs4_opendata_put(data); |
cdd4e68b TM |
1419 | } |
1420 | ||
1421 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1422 | .rpc_call_done = nfs4_open_confirm_done, |
1423 | .rpc_release = nfs4_open_confirm_release, | |
1424 | }; | |
1425 | ||
1426 | /* | |
1427 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1428 | */ | |
1429 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1430 | { | |
1431 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1432 | struct rpc_task *task; | |
5138fde0 TM |
1433 | struct rpc_message msg = { |
1434 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1435 | .rpc_argp = &data->c_arg, | |
1436 | .rpc_resp = &data->c_res, | |
1437 | .rpc_cred = data->owner->so_cred, | |
1438 | }; | |
c970aa85 TM |
1439 | struct rpc_task_setup task_setup_data = { |
1440 | .rpc_client = server->client, | |
5138fde0 | 1441 | .rpc_message = &msg, |
c970aa85 TM |
1442 | .callback_ops = &nfs4_open_confirm_ops, |
1443 | .callback_data = data, | |
101070ca | 1444 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1445 | .flags = RPC_TASK_ASYNC, |
1446 | }; | |
1da177e4 LT |
1447 | int status; |
1448 | ||
c6d00e63 | 1449 | kref_get(&data->kref); |
3e309914 TM |
1450 | data->rpc_done = 0; |
1451 | data->rpc_status = 0; | |
5138fde0 | 1452 | data->timestamp = jiffies; |
c970aa85 | 1453 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1454 | if (IS_ERR(task)) |
cdd4e68b | 1455 | return PTR_ERR(task); |
cdd4e68b TM |
1456 | status = nfs4_wait_for_completion_rpc_task(task); |
1457 | if (status != 0) { | |
1458 | data->cancelled = 1; | |
1459 | smp_wmb(); | |
1460 | } else | |
1461 | status = data->rpc_status; | |
e6b3c4db | 1462 | rpc_put_task(task); |
1da177e4 LT |
1463 | return status; |
1464 | } | |
1465 | ||
24ac23ab | 1466 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1467 | { |
24ac23ab TM |
1468 | struct nfs4_opendata *data = calldata; |
1469 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1470 | |
24ac23ab TM |
1471 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1472 | return; | |
aac00a8d TM |
1473 | /* |
1474 | * Check if we still need to send an OPEN call, or if we can use | |
1475 | * a delegation instead. | |
1476 | */ | |
1477 | if (data->state != NULL) { | |
1478 | struct nfs_delegation *delegation; | |
1479 | ||
dc0b027d | 1480 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1481 | goto out_no_action; |
aac00a8d TM |
1482 | rcu_read_lock(); |
1483 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1484 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1485 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1486 | goto unlock_no_action; | |
aac00a8d TM |
1487 | rcu_read_unlock(); |
1488 | } | |
95b72eb0 | 1489 | /* Update client id. */ |
1f0e890d | 1490 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1491 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1492 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1493 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1494 | } | |
26e976a8 | 1495 | data->timestamp = jiffies; |
035168ab | 1496 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1497 | &data->o_arg.seq_args, |
9d12b216 | 1498 | &data->o_res.seq_res, task)) |
d898528c | 1499 | return; |
5138fde0 | 1500 | rpc_call_start(task); |
6ee41268 | 1501 | return; |
652f89f6 TM |
1502 | unlock_no_action: |
1503 | rcu_read_unlock(); | |
6ee41268 TM |
1504 | out_no_action: |
1505 | task->tk_action = NULL; | |
1506 | ||
24ac23ab | 1507 | } |
1da177e4 | 1508 | |
b257957e AB |
1509 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1510 | { | |
1511 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1512 | nfs4_open_prepare(task, calldata); | |
1513 | } | |
1514 | ||
24ac23ab TM |
1515 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1516 | { | |
1517 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1518 | |
24ac23ab | 1519 | data->rpc_status = task->tk_status; |
d898528c | 1520 | |
14516c3a TM |
1521 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1522 | return; | |
d898528c | 1523 | |
24ac23ab TM |
1524 | if (task->tk_status == 0) { |
1525 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1526 | case S_IFREG: |
1527 | break; | |
1528 | case S_IFLNK: | |
24ac23ab | 1529 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1530 | break; |
1531 | case S_IFDIR: | |
24ac23ab | 1532 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1533 | break; |
1534 | default: | |
24ac23ab | 1535 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1536 | } |
26e976a8 | 1537 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1538 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1539 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1540 | } |
3e309914 | 1541 | data->rpc_done = 1; |
24ac23ab | 1542 | } |
6f926b5b | 1543 | |
24ac23ab TM |
1544 | static void nfs4_open_release(void *calldata) |
1545 | { | |
1546 | struct nfs4_opendata *data = calldata; | |
1547 | struct nfs4_state *state = NULL; | |
1548 | ||
1549 | /* If this request hasn't been cancelled, do nothing */ | |
1550 | if (data->cancelled == 0) | |
1551 | goto out_free; | |
1552 | /* In case of error, no cleanup! */ | |
3e309914 | 1553 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1554 | goto out_free; |
1555 | /* In case we need an open_confirm, no cleanup! */ | |
1556 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1557 | goto out_free; | |
24ac23ab | 1558 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1559 | if (!IS_ERR(state)) |
643168c2 | 1560 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1561 | out_free: |
c6d00e63 | 1562 | nfs4_opendata_put(data); |
24ac23ab TM |
1563 | } |
1564 | ||
1565 | static const struct rpc_call_ops nfs4_open_ops = { | |
1566 | .rpc_call_prepare = nfs4_open_prepare, | |
1567 | .rpc_call_done = nfs4_open_done, | |
1568 | .rpc_release = nfs4_open_release, | |
1569 | }; | |
1570 | ||
b257957e AB |
1571 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1572 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1573 | .rpc_call_done = nfs4_open_done, | |
1574 | .rpc_release = nfs4_open_release, | |
1575 | }; | |
1576 | ||
1577 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1578 | { |
1579 | struct inode *dir = data->dir->d_inode; | |
1580 | struct nfs_server *server = NFS_SERVER(dir); | |
1581 | struct nfs_openargs *o_arg = &data->o_arg; | |
1582 | struct nfs_openres *o_res = &data->o_res; | |
1583 | struct rpc_task *task; | |
5138fde0 TM |
1584 | struct rpc_message msg = { |
1585 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1586 | .rpc_argp = o_arg, | |
1587 | .rpc_resp = o_res, | |
1588 | .rpc_cred = data->owner->so_cred, | |
1589 | }; | |
c970aa85 TM |
1590 | struct rpc_task_setup task_setup_data = { |
1591 | .rpc_client = server->client, | |
5138fde0 | 1592 | .rpc_message = &msg, |
c970aa85 TM |
1593 | .callback_ops = &nfs4_open_ops, |
1594 | .callback_data = data, | |
101070ca | 1595 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1596 | .flags = RPC_TASK_ASYNC, |
1597 | }; | |
24ac23ab TM |
1598 | int status; |
1599 | ||
9d12b216 | 1600 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1601 | kref_get(&data->kref); |
3e309914 TM |
1602 | data->rpc_done = 0; |
1603 | data->rpc_status = 0; | |
2ced46c2 | 1604 | data->cancelled = 0; |
b257957e AB |
1605 | if (isrecover) |
1606 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1607 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1608 | if (IS_ERR(task)) |
1609 | return PTR_ERR(task); | |
1610 | status = nfs4_wait_for_completion_rpc_task(task); | |
1611 | if (status != 0) { | |
1612 | data->cancelled = 1; | |
1613 | smp_wmb(); | |
1614 | } else | |
1615 | status = data->rpc_status; | |
1616 | rpc_put_task(task); | |
1617 | ||
1618 | return status; | |
1619 | } | |
1620 | ||
1621 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1622 | { | |
1623 | struct inode *dir = data->dir->d_inode; | |
1624 | struct nfs_openres *o_res = &data->o_res; | |
1625 | int status; | |
1626 | ||
1627 | status = nfs4_run_open_task(data, 1); | |
1628 | if (status != 0 || !data->rpc_done) | |
1629 | return status; | |
1630 | ||
6926afd1 TM |
1631 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1632 | ||
b257957e AB |
1633 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1634 | status = _nfs4_proc_open_confirm(data); | |
1635 | if (status != 0) | |
1636 | return status; | |
1637 | } | |
1638 | ||
1639 | return status; | |
1640 | } | |
1641 | ||
1642 | /* | |
1643 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1644 | */ | |
1645 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1646 | { | |
1647 | struct inode *dir = data->dir->d_inode; | |
1648 | struct nfs_server *server = NFS_SERVER(dir); | |
1649 | struct nfs_openargs *o_arg = &data->o_arg; | |
1650 | struct nfs_openres *o_res = &data->o_res; | |
1651 | int status; | |
1652 | ||
1653 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1654 | if (!data->rpc_done) |
1655 | return status; | |
1656 | if (status != 0) { | |
1657 | if (status == -NFS4ERR_BADNAME && | |
1658 | !(o_arg->open_flags & O_CREAT)) | |
1659 | return -ENOENT; | |
24ac23ab | 1660 | return status; |
08ef7bd3 | 1661 | } |
24ac23ab | 1662 | |
6926afd1 TM |
1663 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1664 | ||
90ff0c54 | 1665 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1666 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1667 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1668 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1669 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1670 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1671 | if (status != 0) |
24ac23ab | 1672 | return status; |
1da177e4 LT |
1673 | } |
1674 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1675 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1676 | return 0; |
1da177e4 LT |
1677 | } |
1678 | ||
d83217c1 | 1679 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1680 | { |
a78cb57a | 1681 | unsigned int loop; |
6b30954e | 1682 | int ret; |
58d9714a | 1683 | |
a78cb57a | 1684 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1685 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1686 | if (ret != 0) |
a78cb57a | 1687 | break; |
e598d843 TM |
1688 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1689 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1690 | break; |
0400a6b0 | 1691 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1692 | ret = -EIO; |
6b30954e | 1693 | } |
a78cb57a | 1694 | return ret; |
58d9714a TM |
1695 | } |
1696 | ||
d83217c1 AA |
1697 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1698 | { | |
1699 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1700 | } | |
1701 | ||
1da177e4 LT |
1702 | /* |
1703 | * OPEN_EXPIRED: | |
1704 | * reclaim state on the server after a network partition. | |
1705 | * Assumes caller holds the appropriate lock | |
1706 | */ | |
539cd03a | 1707 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1708 | { |
e56e0b78 | 1709 | struct nfs4_opendata *opendata; |
864472e9 | 1710 | int ret; |
1da177e4 | 1711 | |
6f220ed5 TM |
1712 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1713 | if (IS_ERR(opendata)) | |
1714 | return PTR_ERR(opendata); | |
864472e9 | 1715 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1716 | if (ret == -ESTALE) |
3d4ff43d | 1717 | d_drop(ctx->dentry); |
c6d00e63 | 1718 | nfs4_opendata_put(opendata); |
864472e9 | 1719 | return ret; |
1da177e4 LT |
1720 | } |
1721 | ||
a9ed2e25 | 1722 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1723 | { |
539cd03a | 1724 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1725 | struct nfs4_exception exception = { }; |
1726 | int err; | |
1727 | ||
1728 | do { | |
539cd03a | 1729 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1730 | switch (err) { |
1731 | default: | |
1732 | goto out; | |
1733 | case -NFS4ERR_GRACE: | |
1734 | case -NFS4ERR_DELAY: | |
1735 | nfs4_handle_exception(server, err, &exception); | |
1736 | err = 0; | |
1737 | } | |
202b50dc | 1738 | } while (exception.retry); |
a9ed2e25 | 1739 | out: |
202b50dc TM |
1740 | return err; |
1741 | } | |
1742 | ||
1da177e4 LT |
1743 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1744 | { | |
1da177e4 | 1745 | struct nfs_open_context *ctx; |
864472e9 | 1746 | int ret; |
1da177e4 | 1747 | |
864472e9 TM |
1748 | ctx = nfs4_state_find_open_context(state); |
1749 | if (IS_ERR(ctx)) | |
1750 | return PTR_ERR(ctx); | |
539cd03a | 1751 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1752 | put_nfs_open_context(ctx); |
1753 | return ret; | |
1da177e4 LT |
1754 | } |
1755 | ||
f062eb6c | 1756 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 1757 | static int nfs41_check_expired_stateid(struct nfs4_state *state, nfs4_stateid *stateid, unsigned int flags) |
f062eb6c | 1758 | { |
b01dd1d8 | 1759 | int status = NFS_OK; |
f062eb6c BS |
1760 | struct nfs_server *server = NFS_SERVER(state->inode); |
1761 | ||
b01dd1d8 BS |
1762 | if (state->flags & flags) { |
1763 | status = nfs41_test_stateid(server, stateid); | |
1764 | if (status != NFS_OK) { | |
1765 | nfs41_free_stateid(server, stateid); | |
1766 | state->flags &= ~flags; | |
1767 | } | |
1768 | } | |
1769 | return status; | |
1770 | } | |
1771 | ||
1772 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1773 | { | |
1774 | int deleg_status, open_status; | |
1775 | int deleg_flags = 1 << NFS_DELEGATED_STATE; | |
1776 | int open_flags = (1 << NFS_O_RDONLY_STATE) | (1 << NFS_O_WRONLY_STATE) | (1 << NFS_O_RDWR_STATE); | |
1777 | ||
1778 | deleg_status = nfs41_check_expired_stateid(state, &state->stateid, deleg_flags); | |
1779 | open_status = nfs41_check_expired_stateid(state, &state->open_stateid, open_flags); | |
1780 | ||
1781 | if ((deleg_status == NFS_OK) && (open_status == NFS_OK)) | |
1782 | return NFS_OK; | |
f062eb6c BS |
1783 | return nfs4_open_expired(sp, state); |
1784 | } | |
1785 | #endif | |
1786 | ||
aa53ed54 JL |
1787 | /* |
1788 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1789 | * fields corresponding to attributes that were used to store the verifier. | |
1790 | * Make sure we clobber those fields in the later setattr call | |
1791 | */ | |
1792 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1793 | { | |
1794 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1795 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1796 | sattr->ia_valid |= ATTR_ATIME; | |
1797 | ||
1798 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1799 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1800 | sattr->ia_valid |= ATTR_MTIME; | |
1801 | } | |
1802 | ||
1da177e4 | 1803 | /* |
24ac23ab | 1804 | * Returns a referenced nfs4_state |
1da177e4 | 1805 | */ |
82be417a AA |
1806 | static int _nfs4_do_open(struct inode *dir, |
1807 | struct dentry *dentry, | |
1808 | fmode_t fmode, | |
1809 | int flags, | |
1810 | struct iattr *sattr, | |
1811 | struct rpc_cred *cred, | |
1812 | struct nfs4_state **res, | |
1813 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1814 | { |
1815 | struct nfs4_state_owner *sp; | |
1816 | struct nfs4_state *state = NULL; | |
1817 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1818 | struct nfs4_opendata *opendata; |
aac00a8d | 1819 | int status; |
1da177e4 LT |
1820 | |
1821 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1822 | status = -ENOMEM; |
d1e284d5 TM |
1823 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1824 | if (sp == NULL) { | |
1da177e4 LT |
1825 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1826 | goto out_err; | |
1827 | } | |
58d9714a TM |
1828 | status = nfs4_recover_expired_lease(server); |
1829 | if (status != 0) | |
b4454fe1 | 1830 | goto err_put_state_owner; |
82a2c1b7 AV |
1831 | if (dentry->d_inode != NULL) |
1832 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1833 | status = -ENOMEM; |
82a2c1b7 | 1834 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1835 | if (opendata == NULL) |
95d35cb4 | 1836 | goto err_put_state_owner; |
1da177e4 | 1837 | |
82be417a AA |
1838 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
1839 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
1840 | if (!opendata->f_attr.mdsthreshold) | |
1841 | goto err_opendata_put; | |
1549210f | 1842 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 1843 | } |
82a2c1b7 AV |
1844 | if (dentry->d_inode != NULL) |
1845 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1846 | |
24ac23ab | 1847 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1848 | if (status != 0) |
c6d00e63 | 1849 | goto err_opendata_put; |
1da177e4 | 1850 | |
24ac23ab | 1851 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1852 | status = PTR_ERR(state); |
1853 | if (IS_ERR(state)) | |
c6d00e63 | 1854 | goto err_opendata_put; |
0df5dd4a | 1855 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1856 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1857 | |
1858 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1859 | nfs4_exclusive_attrset(opendata, sattr); | |
1860 | ||
1861 | nfs_fattr_init(opendata->o_res.f_attr); | |
1862 | status = nfs4_do_setattr(state->inode, cred, | |
1863 | opendata->o_res.f_attr, sattr, | |
1864 | state); | |
1865 | if (status == 0) | |
1866 | nfs_setattr_update_inode(state->inode, sattr); | |
1867 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1868 | } | |
82be417a AA |
1869 | |
1870 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
1871 | *ctx_th = opendata->f_attr.mdsthreshold; | |
1872 | else | |
1873 | kfree(opendata->f_attr.mdsthreshold); | |
1874 | opendata->f_attr.mdsthreshold = NULL; | |
1875 | ||
c6d00e63 | 1876 | nfs4_opendata_put(opendata); |
1da177e4 | 1877 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1878 | *res = state; |
1879 | return 0; | |
c6d00e63 | 1880 | err_opendata_put: |
82be417a | 1881 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 1882 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
1883 | err_put_state_owner: |
1884 | nfs4_put_state_owner(sp); | |
1da177e4 | 1885 | out_err: |
1da177e4 LT |
1886 | *res = NULL; |
1887 | return status; | |
1888 | } | |
1889 | ||
1890 | ||
82be417a AA |
1891 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
1892 | struct dentry *dentry, | |
1893 | fmode_t fmode, | |
1894 | int flags, | |
1895 | struct iattr *sattr, | |
1896 | struct rpc_cred *cred, | |
1897 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1898 | { |
1899 | struct nfs4_exception exception = { }; | |
1900 | struct nfs4_state *res; | |
1901 | int status; | |
1902 | ||
1903 | do { | |
82be417a AA |
1904 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
1905 | &res, ctx_th); | |
1da177e4 LT |
1906 | if (status == 0) |
1907 | break; | |
1908 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1909 | * book-keeping w.r.t. state-changing operations | |
1910 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1911 | * It is actually a sign of a bug on the client or on the server. | |
1912 | * | |
1913 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1914 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1915 | * have unhashed the old state_owner for us, and that we can |
1916 | * therefore safely retry using a new one. We should still warn | |
1917 | * the user though... | |
1918 | */ | |
1919 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 1920 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
1921 | " returned a bad sequence-id error!\n", |
1922 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1923 | exception.retry = 1; |
1924 | continue; | |
1925 | } | |
550f5747 TM |
1926 | /* |
1927 | * BAD_STATEID on OPEN means that the server cancelled our | |
1928 | * state before it received the OPEN_CONFIRM. | |
1929 | * Recover by retrying the request as per the discussion | |
1930 | * on Page 181 of RFC3530. | |
1931 | */ | |
1932 | if (status == -NFS4ERR_BAD_STATEID) { | |
1933 | exception.retry = 1; | |
1934 | continue; | |
1935 | } | |
aac00a8d TM |
1936 | if (status == -EAGAIN) { |
1937 | /* We must have found a delegation */ | |
1938 | exception.retry = 1; | |
1939 | continue; | |
1940 | } | |
1da177e4 LT |
1941 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1942 | status, &exception)); | |
1943 | } while (exception.retry); | |
1944 | return res; | |
1945 | } | |
1946 | ||
659bfcd6 TM |
1947 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1948 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1949 | struct nfs4_state *state) | |
1da177e4 | 1950 | { |
3e4f6290 | 1951 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1952 | struct nfs_setattrargs arg = { |
3e4f6290 | 1953 | .fh = NFS_FH(inode), |
1da177e4 LT |
1954 | .iap = sattr, |
1955 | .server = server, | |
1956 | .bitmask = server->attr_bitmask, | |
1957 | }; | |
1958 | struct nfs_setattrres res = { | |
1959 | .fattr = fattr, | |
1960 | .server = server, | |
1961 | }; | |
1962 | struct rpc_message msg = { | |
659bfcd6 TM |
1963 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1964 | .rpc_argp = &arg, | |
1965 | .rpc_resp = &res, | |
1966 | .rpc_cred = cred, | |
1da177e4 | 1967 | }; |
26e976a8 | 1968 | unsigned long timestamp = jiffies; |
65e4308d | 1969 | int status; |
1da177e4 | 1970 | |
0e574af1 | 1971 | nfs_fattr_init(fattr); |
1da177e4 | 1972 | |
4fc8796d TM |
1973 | if (state != NULL) { |
1974 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
1975 | current->files, current->tgid); | |
1976 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, | |
1977 | FMODE_WRITE)) { | |
3e4f6290 | 1978 | /* Use that stateid */ |
08e9eac4 | 1979 | } else |
f597c537 | 1980 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 1981 | |
7c513058 | 1982 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1983 | if (status == 0 && state != NULL) |
1984 | renew_lease(server, timestamp); | |
65e4308d | 1985 | return status; |
1da177e4 LT |
1986 | } |
1987 | ||
659bfcd6 TM |
1988 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1989 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1990 | struct nfs4_state *state) | |
1da177e4 | 1991 | { |
3e4f6290 | 1992 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
1993 | struct nfs4_exception exception = { |
1994 | .state = state, | |
3114ea7a | 1995 | .inode = inode, |
a1d0b5ee | 1996 | }; |
1da177e4 LT |
1997 | int err; |
1998 | do { | |
451146be TM |
1999 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2000 | switch (err) { | |
2001 | case -NFS4ERR_OPENMODE: | |
2002 | if (state && !(state->state & FMODE_WRITE)) { | |
2003 | err = -EBADF; | |
2004 | if (sattr->ia_valid & ATTR_OPEN) | |
2005 | err = -EACCES; | |
2006 | goto out; | |
2007 | } | |
2008 | } | |
2009 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2010 | } while (exception.retry); |
451146be | 2011 | out: |
1da177e4 LT |
2012 | return err; |
2013 | } | |
2014 | ||
2015 | struct nfs4_closedata { | |
2016 | struct inode *inode; | |
2017 | struct nfs4_state *state; | |
2018 | struct nfs_closeargs arg; | |
2019 | struct nfs_closeres res; | |
516a6af6 | 2020 | struct nfs_fattr fattr; |
26e976a8 | 2021 | unsigned long timestamp; |
f7e8917a FI |
2022 | bool roc; |
2023 | u32 roc_barrier; | |
1da177e4 LT |
2024 | }; |
2025 | ||
963d8fe5 | 2026 | static void nfs4_free_closedata(void *data) |
9512135d | 2027 | { |
963d8fe5 TM |
2028 | struct nfs4_closedata *calldata = data; |
2029 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2030 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2031 | |
f7e8917a FI |
2032 | if (calldata->roc) |
2033 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2034 | nfs4_put_open_state(calldata->state); |
2035 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2036 | nfs4_put_state_owner(sp); |
643168c2 | 2037 | nfs_sb_deactive(sb); |
9512135d TM |
2038 | kfree(calldata); |
2039 | } | |
2040 | ||
88069f77 TM |
2041 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2042 | fmode_t fmode) | |
2043 | { | |
2044 | spin_lock(&state->owner->so_lock); | |
2045 | if (!(fmode & FMODE_READ)) | |
2046 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2047 | if (!(fmode & FMODE_WRITE)) | |
2048 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2049 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2050 | spin_unlock(&state->owner->so_lock); | |
2051 | } | |
2052 | ||
963d8fe5 | 2053 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2054 | { |
963d8fe5 | 2055 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2056 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2057 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2058 | ||
a3ca5651 | 2059 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2060 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2061 | return; | |
1da177e4 LT |
2062 | /* hmm. we are done with the inode, and in the process of freeing |
2063 | * the state_owner. we keep this around to process errors | |
2064 | */ | |
1da177e4 LT |
2065 | switch (task->tk_status) { |
2066 | case 0: | |
f7e8917a FI |
2067 | if (calldata->roc) |
2068 | pnfs_roc_set_barrier(state->inode, | |
2069 | calldata->roc_barrier); | |
45328c35 | 2070 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2071 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2072 | nfs4_close_clear_stateid_flags(state, |
2073 | calldata->arg.fmode); | |
1da177e4 LT |
2074 | break; |
2075 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2076 | case -NFS4ERR_OLD_STATEID: |
2077 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2078 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2079 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2080 | break; |
1da177e4 | 2081 | default: |
72211dbe TM |
2082 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2083 | rpc_restart_call_prepare(task); | |
1da177e4 | 2084 | } |
72211dbe | 2085 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2086 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2087 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2088 | } |
2089 | ||
4ce70ada | 2090 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2091 | { |
4ce70ada | 2092 | struct nfs4_closedata *calldata = data; |
9512135d | 2093 | struct nfs4_state *state = calldata->state; |
88069f77 | 2094 | int call_close = 0; |
9512135d | 2095 | |
a3ca5651 | 2096 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2097 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2098 | return; |
003707c7 | 2099 | |
88069f77 TM |
2100 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2101 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2102 | spin_lock(&state->owner->so_lock); |
003707c7 | 2103 | /* Calculate the change in open mode */ |
e7616923 | 2104 | if (state->n_rdwr == 0) { |
003707c7 | 2105 | if (state->n_rdonly == 0) { |
88069f77 TM |
2106 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2107 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2108 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2109 | } |
2110 | if (state->n_wronly == 0) { | |
88069f77 TM |
2111 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2112 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2113 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2114 | } |
e7616923 | 2115 | } |
4cecb76f | 2116 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2117 | |
2118 | if (!call_close) { | |
963d8fe5 TM |
2119 | /* Note: exit _without_ calling nfs4_close_done */ |
2120 | task->tk_action = NULL; | |
a3ca5651 | 2121 | goto out; |
9512135d | 2122 | } |
88069f77 | 2123 | |
f7e8917a | 2124 | if (calldata->arg.fmode == 0) { |
88069f77 | 2125 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2126 | if (calldata->roc && |
2127 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2128 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2129 | task, NULL); | |
a3ca5651 | 2130 | goto out; |
f7e8917a FI |
2131 | } |
2132 | } | |
88069f77 | 2133 | |
516a6af6 | 2134 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2135 | calldata->timestamp = jiffies; |
035168ab | 2136 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
9d12b216 TM |
2137 | &calldata->arg.seq_args, |
2138 | &calldata->res.seq_res, | |
2139 | task)) | |
a3ca5651 | 2140 | goto out; |
5138fde0 | 2141 | rpc_call_start(task); |
a3ca5651 CL |
2142 | out: |
2143 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2144 | } |
2145 | ||
963d8fe5 | 2146 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2147 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2148 | .rpc_call_done = nfs4_close_done, |
2149 | .rpc_release = nfs4_free_closedata, | |
2150 | }; | |
2151 | ||
1da177e4 LT |
2152 | /* |
2153 | * It is possible for data to be read/written from a mem-mapped file | |
2154 | * after the sys_close call (which hits the vfs layer as a flush). | |
2155 | * This means that we can't safely call nfsv4 close on a file until | |
2156 | * the inode is cleared. This in turn means that we are not good | |
2157 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2158 | * share state even when we are done with one of the three share | |
2159 | * stateid's in the inode. | |
2160 | * | |
2161 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2162 | */ | |
643168c2 | 2163 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2164 | { |
4a35bd41 | 2165 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2166 | struct nfs4_closedata *calldata; |
b39e625b TM |
2167 | struct nfs4_state_owner *sp = state->owner; |
2168 | struct rpc_task *task; | |
5138fde0 TM |
2169 | struct rpc_message msg = { |
2170 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2171 | .rpc_cred = state->owner->so_cred, | |
2172 | }; | |
c970aa85 TM |
2173 | struct rpc_task_setup task_setup_data = { |
2174 | .rpc_client = server->client, | |
5138fde0 | 2175 | .rpc_message = &msg, |
c970aa85 | 2176 | .callback_ops = &nfs4_close_ops, |
101070ca | 2177 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2178 | .flags = RPC_TASK_ASYNC, |
2179 | }; | |
9512135d | 2180 | int status = -ENOMEM; |
1da177e4 | 2181 | |
8535b2be | 2182 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2183 | if (calldata == NULL) |
9512135d | 2184 | goto out; |
9d12b216 | 2185 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2186 | calldata->inode = state->inode; |
1da177e4 | 2187 | calldata->state = state; |
4a35bd41 | 2188 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2189 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2190 | /* Serialization for the sequence id */ |
8535b2be | 2191 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2192 | if (calldata->arg.seqid == NULL) |
2193 | goto out_free_calldata; | |
dc0b027d | 2194 | calldata->arg.fmode = 0; |
a65318bf | 2195 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2196 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2197 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2198 | calldata->res.server = server; |
f7e8917a | 2199 | calldata->roc = roc; |
643168c2 | 2200 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2201 | |
1174dd1f TM |
2202 | msg.rpc_argp = &calldata->arg; |
2203 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2204 | task_setup_data.callback_data = calldata; |
2205 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2206 | if (IS_ERR(task)) |
2207 | return PTR_ERR(task); | |
a49c3c77 TM |
2208 | status = 0; |
2209 | if (wait) | |
2210 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2211 | rpc_put_task(task); |
a49c3c77 | 2212 | return status; |
9512135d TM |
2213 | out_free_calldata: |
2214 | kfree(calldata); | |
2215 | out: | |
f7e8917a FI |
2216 | if (roc) |
2217 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2218 | nfs4_put_open_state(state); |
2219 | nfs4_put_state_owner(sp); | |
9512135d | 2220 | return status; |
1da177e4 LT |
2221 | } |
2222 | ||
2b484297 | 2223 | static struct inode * |
cd9a1c0e | 2224 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2225 | { |
1da177e4 | 2226 | struct nfs4_state *state; |
1da177e4 | 2227 | |
565277f6 | 2228 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2229 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2230 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2231 | if (IS_ERR(state)) |
2232 | return ERR_CAST(state); | |
cd9a1c0e | 2233 | ctx->state = state; |
f46e0bd3 | 2234 | return igrab(state->inode); |
1da177e4 LT |
2235 | } |
2236 | ||
1185a552 | 2237 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2238 | { |
2239 | if (ctx->state == NULL) | |
2240 | return; | |
2241 | if (is_sync) | |
643168c2 | 2242 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2243 | else |
643168c2 | 2244 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2245 | } |
1da177e4 LT |
2246 | |
2247 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2248 | { | |
43652ad5 BH |
2249 | struct nfs4_server_caps_arg args = { |
2250 | .fhandle = fhandle, | |
2251 | }; | |
1da177e4 LT |
2252 | struct nfs4_server_caps_res res = {}; |
2253 | struct rpc_message msg = { | |
2254 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2255 | .rpc_argp = &args, |
1da177e4 LT |
2256 | .rpc_resp = &res, |
2257 | }; | |
2258 | int status; | |
2259 | ||
7c513058 | 2260 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2261 | if (status == 0) { |
2262 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2263 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2264 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2265 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2266 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2267 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2268 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2269 | server->caps |= NFS_CAP_ACLS; | |
2270 | if (res.has_links != 0) | |
2271 | server->caps |= NFS_CAP_HARDLINKS; | |
2272 | if (res.has_symlinks != 0) | |
2273 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2274 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2275 | server->caps |= NFS_CAP_FILEID; | |
2276 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2277 | server->caps |= NFS_CAP_MODE; | |
2278 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2279 | server->caps |= NFS_CAP_NLINK; | |
2280 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2281 | server->caps |= NFS_CAP_OWNER; | |
2282 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2283 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2284 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2285 | server->caps |= NFS_CAP_ATIME; | |
2286 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2287 | server->caps |= NFS_CAP_CTIME; | |
2288 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2289 | server->caps |= NFS_CAP_MTIME; | |
2290 | ||
a65318bf TM |
2291 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2292 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2293 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2294 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2295 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2296 | } |
cccef3b9 | 2297 | |
1da177e4 LT |
2298 | return status; |
2299 | } | |
2300 | ||
55a97593 | 2301 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2302 | { |
2303 | struct nfs4_exception exception = { }; | |
2304 | int err; | |
2305 | do { | |
2306 | err = nfs4_handle_exception(server, | |
2307 | _nfs4_server_capabilities(server, fhandle), | |
2308 | &exception); | |
2309 | } while (exception.retry); | |
2310 | return err; | |
2311 | } | |
2312 | ||
2313 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2314 | struct nfs_fsinfo *info) | |
2315 | { | |
1da177e4 LT |
2316 | struct nfs4_lookup_root_arg args = { |
2317 | .bitmask = nfs4_fattr_bitmap, | |
2318 | }; | |
2319 | struct nfs4_lookup_res res = { | |
2320 | .server = server, | |
0e574af1 | 2321 | .fattr = info->fattr, |
1da177e4 LT |
2322 | .fh = fhandle, |
2323 | }; | |
2324 | struct rpc_message msg = { | |
2325 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2326 | .rpc_argp = &args, | |
2327 | .rpc_resp = &res, | |
2328 | }; | |
008f55d0 | 2329 | |
0e574af1 | 2330 | nfs_fattr_init(info->fattr); |
7c513058 | 2331 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2332 | } |
2333 | ||
2334 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2335 | struct nfs_fsinfo *info) | |
2336 | { | |
2337 | struct nfs4_exception exception = { }; | |
2338 | int err; | |
2339 | do { | |
fb8a5ba8 BS |
2340 | err = _nfs4_lookup_root(server, fhandle, info); |
2341 | switch (err) { | |
2342 | case 0: | |
2343 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2344 | goto out; |
fb8a5ba8 BS |
2345 | default: |
2346 | err = nfs4_handle_exception(server, err, &exception); | |
2347 | } | |
1da177e4 | 2348 | } while (exception.retry); |
05e9cfb4 | 2349 | out: |
1da177e4 LT |
2350 | return err; |
2351 | } | |
2352 | ||
8f70e95f BS |
2353 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2354 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2355 | { | |
2356 | struct rpc_auth *auth; | |
2357 | int ret; | |
2358 | ||
2359 | auth = rpcauth_create(flavor, server->client); | |
2360 | if (!auth) { | |
2361 | ret = -EIO; | |
2362 | goto out; | |
2363 | } | |
2364 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2365 | out: |
2366 | return ret; | |
2367 | } | |
2368 | ||
801a16dc | 2369 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2370 | struct nfs_fsinfo *info) |
1da177e4 | 2371 | { |
8f70e95f | 2372 | int i, len, status = 0; |
0fabee24 | 2373 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2374 | |
801a16dc BS |
2375 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2376 | flav_array[len] = RPC_AUTH_NULL; | |
2377 | len += 1; | |
8f70e95f BS |
2378 | |
2379 | for (i = 0; i < len; i++) { | |
2380 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2381 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2382 | continue; |
2383 | break; | |
8f70e95f | 2384 | } |
fb8a5ba8 BS |
2385 | /* |
2386 | * -EACCESS could mean that the user doesn't have correct permissions | |
2387 | * to access the mount. It could also mean that we tried to mount | |
2388 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2389 | * existing mount programs don't handle -EACCES very well so it should | |
2390 | * be mapped to -EPERM instead. | |
2391 | */ | |
2392 | if (status == -EACCES) | |
2393 | status = -EPERM; | |
801a16dc BS |
2394 | return status; |
2395 | } | |
2396 | ||
2397 | /* | |
2398 | * get the file handle for the "/" directory on the server | |
2399 | */ | |
3028eb2b BS |
2400 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2401 | struct nfs_fsinfo *info) | |
801a16dc | 2402 | { |
fca78d6d | 2403 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2404 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2405 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2406 | /* | |
2407 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2408 | * by nfs4_map_errors() as this function exits. | |
2409 | */ | |
fca78d6d | 2410 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2411 | if (status == 0) |
2412 | status = nfs4_server_capabilities(server, fhandle); | |
2413 | if (status == 0) | |
2414 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2415 | return nfs4_map_errors(status); |
1da177e4 LT |
2416 | } |
2417 | ||
bae36241 BS |
2418 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2419 | struct nfs_fsinfo *info) | |
2420 | { | |
2421 | int error; | |
2422 | struct nfs_fattr *fattr = info->fattr; | |
2423 | ||
2424 | error = nfs4_server_capabilities(server, mntfh); | |
2425 | if (error < 0) { | |
2426 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2427 | return error; | |
2428 | } | |
2429 | ||
2430 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2431 | if (error < 0) { | |
2432 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2433 | return error; | |
2434 | } | |
2435 | ||
2436 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2437 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2438 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2439 | ||
2440 | return error; | |
2441 | } | |
2442 | ||
6b97fd3d MN |
2443 | /* |
2444 | * Get locations and (maybe) other attributes of a referral. | |
2445 | * Note that we'll actually follow the referral later when | |
2446 | * we detect fsid mismatch in inode revalidation | |
2447 | */ | |
f05d147f BS |
2448 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2449 | const struct qstr *name, struct nfs_fattr *fattr, | |
2450 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2451 | { |
2452 | int status = -ENOMEM; | |
2453 | struct page *page = NULL; | |
2454 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2455 | |
2456 | page = alloc_page(GFP_KERNEL); | |
2457 | if (page == NULL) | |
2458 | goto out; | |
2459 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2460 | if (locations == NULL) | |
2461 | goto out; | |
2462 | ||
f05d147f | 2463 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2464 | if (status != 0) |
2465 | goto out; | |
2466 | /* Make sure server returned a different fsid for the referral */ | |
2467 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2468 | dprintk("%s: server did not return a different fsid for" |
2469 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2470 | status = -EIO; |
2471 | goto out; | |
2472 | } | |
533eb461 AA |
2473 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2474 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2475 | |
533eb461 | 2476 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2477 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2478 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2479 | out: | |
2480 | if (page) | |
2481 | __free_page(page); | |
5d7ca35a | 2482 | kfree(locations); |
6b97fd3d MN |
2483 | return status; |
2484 | } | |
2485 | ||
1da177e4 LT |
2486 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2487 | { | |
2488 | struct nfs4_getattr_arg args = { | |
2489 | .fh = fhandle, | |
2490 | .bitmask = server->attr_bitmask, | |
2491 | }; | |
2492 | struct nfs4_getattr_res res = { | |
2493 | .fattr = fattr, | |
2494 | .server = server, | |
2495 | }; | |
2496 | struct rpc_message msg = { | |
2497 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2498 | .rpc_argp = &args, | |
2499 | .rpc_resp = &res, | |
2500 | }; | |
2501 | ||
0e574af1 | 2502 | nfs_fattr_init(fattr); |
7c513058 | 2503 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2504 | } |
2505 | ||
2506 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2507 | { | |
2508 | struct nfs4_exception exception = { }; | |
2509 | int err; | |
2510 | do { | |
2511 | err = nfs4_handle_exception(server, | |
2512 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2513 | &exception); | |
2514 | } while (exception.retry); | |
2515 | return err; | |
2516 | } | |
2517 | ||
2518 | /* | |
2519 | * The file is not closed if it is opened due to the a request to change | |
2520 | * the size of the file. The open call will not be needed once the | |
2521 | * VFS layer lookup-intents are implemented. | |
2522 | * | |
2523 | * Close is called when the inode is destroyed. | |
2524 | * If we haven't opened the file for O_WRONLY, we | |
2525 | * need to in the size_change case to obtain a stateid. | |
2526 | * | |
2527 | * Got race? | |
2528 | * Because OPEN is always done by name in nfsv4, it is | |
2529 | * possible that we opened a different file by the same | |
2530 | * name. We can recognize this race condition, but we | |
2531 | * can't do anything about it besides returning an error. | |
2532 | * | |
2533 | * This will be fixed with VFS changes (lookup-intent). | |
2534 | */ | |
2535 | static int | |
2536 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2537 | struct iattr *sattr) | |
2538 | { | |
08e9eac4 | 2539 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2540 | struct rpc_cred *cred = NULL; |
d530838b | 2541 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2542 | int status; |
2543 | ||
8a1636c4 BH |
2544 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2545 | pnfs_return_layout(inode); | |
2546 | ||
0e574af1 | 2547 | nfs_fattr_init(fattr); |
1da177e4 | 2548 | |
d530838b | 2549 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2550 | if (sattr->ia_valid & ATTR_FILE) { |
2551 | struct nfs_open_context *ctx; | |
2552 | ||
2553 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2554 | if (ctx) { |
2555 | cred = ctx->cred; | |
2556 | state = ctx->state; | |
2557 | } | |
659bfcd6 | 2558 | } |
08e9eac4 | 2559 | |
536e43d1 TM |
2560 | /* Deal with open(O_TRUNC) */ |
2561 | if (sattr->ia_valid & ATTR_OPEN) | |
2562 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2563 | ||
659bfcd6 | 2564 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2565 | if (status == 0) |
2566 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2567 | return status; |
2568 | } | |
2569 | ||
0c2e53f1 TM |
2570 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2571 | const struct qstr *name, struct nfs_fh *fhandle, | |
2572 | struct nfs_fattr *fattr) | |
2b3de441 | 2573 | { |
0c2e53f1 | 2574 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2575 | int status; |
2576 | struct nfs4_lookup_arg args = { | |
2577 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2578 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2579 | .name = name, |
2580 | }; | |
2581 | struct nfs4_lookup_res res = { | |
2582 | .server = server, | |
2583 | .fattr = fattr, | |
2584 | .fh = fhandle, | |
2585 | }; | |
2586 | struct rpc_message msg = { | |
2587 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2588 | .rpc_argp = &args, | |
2589 | .rpc_resp = &res, | |
2590 | }; | |
2591 | ||
2592 | nfs_fattr_init(fattr); | |
2593 | ||
1da177e4 | 2594 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2595 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2596 | dprintk("NFS reply lookup: %d\n", status); |
2597 | return status; | |
2598 | } | |
2599 | ||
72de53ec | 2600 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2601 | { |
7ebb9315 | 2602 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2603 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2604 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2605 | fattr->nlink = 2; | |
2606 | } | |
2607 | ||
72de53ec BS |
2608 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2609 | struct qstr *name, struct nfs_fh *fhandle, | |
2610 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2611 | { |
2612 | struct nfs4_exception exception = { }; | |
72de53ec | 2613 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2614 | int err; |
2615 | do { | |
72de53ec BS |
2616 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2617 | switch (err) { | |
08ef7bd3 | 2618 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2619 | err = -ENOENT; |
2620 | goto out; | |
0c2e53f1 | 2621 | case -NFS4ERR_MOVED: |
f05d147f | 2622 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2623 | goto out; |
0c2e53f1 | 2624 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2625 | err = -EPERM; |
2626 | if (client != *clnt) | |
2627 | goto out; | |
2628 | ||
2629 | client = nfs4_create_sec_client(client, dir, name); | |
2630 | if (IS_ERR(client)) | |
2631 | return PTR_ERR(client); | |
2632 | ||
2633 | exception.retry = 1; | |
2634 | break; | |
2635 | default: | |
2636 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2637 | } |
1da177e4 | 2638 | } while (exception.retry); |
72de53ec BS |
2639 | |
2640 | out: | |
2641 | if (err == 0) | |
2642 | *clnt = client; | |
2643 | else if (client != *clnt) | |
2644 | rpc_shutdown_client(client); | |
2645 | ||
1da177e4 LT |
2646 | return err; |
2647 | } | |
2648 | ||
80a16b21 | 2649 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2650 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2651 | { | |
2652 | int status; | |
2653 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2654 | ||
2655 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2656 | if (client != NFS_CLIENT(dir)) { | |
2657 | rpc_shutdown_client(client); | |
2658 | nfs_fixup_secinfo_attributes(fattr); | |
2659 | } | |
2660 | return status; | |
2661 | } | |
2662 | ||
f05d147f BS |
2663 | struct rpc_clnt * |
2664 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2665 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2666 | { | |
2667 | int status; | |
2668 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2669 | ||
2670 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2671 | if (status < 0) { | |
2672 | rpc_shutdown_client(client); | |
2673 | return ERR_PTR(status); | |
2674 | } | |
2675 | return client; | |
2676 | } | |
2677 | ||
1da177e4 LT |
2678 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2679 | { | |
76b32999 | 2680 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2681 | struct nfs4_accessargs args = { |
2682 | .fh = NFS_FH(inode), | |
a4980e78 | 2683 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2684 | }; |
2685 | struct nfs4_accessres res = { | |
2686 | .server = server, | |
1da177e4 | 2687 | }; |
1da177e4 LT |
2688 | struct rpc_message msg = { |
2689 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2690 | .rpc_argp = &args, | |
2691 | .rpc_resp = &res, | |
2692 | .rpc_cred = entry->cred, | |
2693 | }; | |
2694 | int mode = entry->mask; | |
2695 | int status; | |
2696 | ||
2697 | /* | |
2698 | * Determine which access bits we want to ask for... | |
2699 | */ | |
2700 | if (mode & MAY_READ) | |
2701 | args.access |= NFS4_ACCESS_READ; | |
2702 | if (S_ISDIR(inode->i_mode)) { | |
2703 | if (mode & MAY_WRITE) | |
2704 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2705 | if (mode & MAY_EXEC) | |
2706 | args.access |= NFS4_ACCESS_LOOKUP; | |
2707 | } else { | |
2708 | if (mode & MAY_WRITE) | |
2709 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2710 | if (mode & MAY_EXEC) | |
2711 | args.access |= NFS4_ACCESS_EXECUTE; | |
2712 | } | |
c407d41a TM |
2713 | |
2714 | res.fattr = nfs_alloc_fattr(); | |
2715 | if (res.fattr == NULL) | |
2716 | return -ENOMEM; | |
2717 | ||
7c513058 | 2718 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2719 | if (!status) { |
2720 | entry->mask = 0; | |
2721 | if (res.access & NFS4_ACCESS_READ) | |
2722 | entry->mask |= MAY_READ; | |
2723 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2724 | entry->mask |= MAY_WRITE; | |
2725 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2726 | entry->mask |= MAY_EXEC; | |
c407d41a | 2727 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2728 | } |
c407d41a | 2729 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2730 | return status; |
2731 | } | |
2732 | ||
2733 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2734 | { | |
2735 | struct nfs4_exception exception = { }; | |
2736 | int err; | |
2737 | do { | |
2738 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2739 | _nfs4_proc_access(inode, entry), | |
2740 | &exception); | |
2741 | } while (exception.retry); | |
2742 | return err; | |
2743 | } | |
2744 | ||
2745 | /* | |
2746 | * TODO: For the time being, we don't try to get any attributes | |
2747 | * along with any of the zero-copy operations READ, READDIR, | |
2748 | * READLINK, WRITE. | |
2749 | * | |
2750 | * In the case of the first three, we want to put the GETATTR | |
2751 | * after the read-type operation -- this is because it is hard | |
2752 | * to predict the length of a GETATTR response in v4, and thus | |
2753 | * align the READ data correctly. This means that the GETATTR | |
2754 | * may end up partially falling into the page cache, and we should | |
2755 | * shift it into the 'tail' of the xdr_buf before processing. | |
2756 | * To do this efficiently, we need to know the total length | |
2757 | * of data received, which doesn't seem to be available outside | |
2758 | * of the RPC layer. | |
2759 | * | |
2760 | * In the case of WRITE, we also want to put the GETATTR after | |
2761 | * the operation -- in this case because we want to make sure | |
2762 | * we get the post-operation mtime and size. This means that | |
2763 | * we can't use xdr_encode_pages() as written: we need a variant | |
2764 | * of it which would leave room in the 'tail' iovec. | |
2765 | * | |
2766 | * Both of these changes to the XDR layer would in fact be quite | |
2767 | * minor, but I decided to leave them for a subsequent patch. | |
2768 | */ | |
2769 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2770 | unsigned int pgbase, unsigned int pglen) | |
2771 | { | |
2772 | struct nfs4_readlink args = { | |
2773 | .fh = NFS_FH(inode), | |
2774 | .pgbase = pgbase, | |
2775 | .pglen = pglen, | |
2776 | .pages = &page, | |
2777 | }; | |
f50c7000 | 2778 | struct nfs4_readlink_res res; |
1da177e4 LT |
2779 | struct rpc_message msg = { |
2780 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2781 | .rpc_argp = &args, | |
f50c7000 | 2782 | .rpc_resp = &res, |
1da177e4 LT |
2783 | }; |
2784 | ||
7c513058 | 2785 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2786 | } |
2787 | ||
2788 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2789 | unsigned int pgbase, unsigned int pglen) | |
2790 | { | |
2791 | struct nfs4_exception exception = { }; | |
2792 | int err; | |
2793 | do { | |
2794 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2795 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2796 | &exception); | |
2797 | } while (exception.retry); | |
2798 | return err; | |
2799 | } | |
2800 | ||
1da177e4 LT |
2801 | /* |
2802 | * Got race? | |
2803 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2804 | * Until then, this create/open method is prone to inefficiency and race | |
2805 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2806 | * placed on the wire. | |
2807 | * | |
2808 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2809 | * The file will be opened again in the subsequent VFS open call | |
2810 | * (nfs4_proc_file_open). | |
2811 | * | |
2812 | * The open for read will just hang around to be used by any process that | |
2813 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2814 | */ | |
2815 | ||
2816 | static int | |
2817 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2818 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2819 | { |
82a2c1b7 | 2820 | struct dentry *de = dentry; |
1da177e4 | 2821 | struct nfs4_state *state; |
c0204fd2 TM |
2822 | struct rpc_cred *cred = NULL; |
2823 | fmode_t fmode = 0; | |
1da177e4 LT |
2824 | int status = 0; |
2825 | ||
c0204fd2 TM |
2826 | if (ctx != NULL) { |
2827 | cred = ctx->cred; | |
3d4ff43d | 2828 | de = ctx->dentry; |
c0204fd2 | 2829 | fmode = ctx->mode; |
1da177e4 | 2830 | } |
a8a5da99 | 2831 | sattr->ia_mode &= ~current_umask(); |
82be417a | 2832 | state = nfs4_do_open(dir, de, fmode, flags, sattr, cred, NULL); |
d4d9cdcb | 2833 | d_drop(dentry); |
1da177e4 LT |
2834 | if (IS_ERR(state)) { |
2835 | status = PTR_ERR(state); | |
c0204fd2 | 2836 | goto out; |
1da177e4 | 2837 | } |
d4d9cdcb | 2838 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2839 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2840 | if (ctx != NULL) |
2841 | ctx->state = state; | |
02a913a7 | 2842 | else |
643168c2 | 2843 | nfs4_close_sync(state, fmode); |
1da177e4 LT |
2844 | out: |
2845 | return status; | |
2846 | } | |
2847 | ||
2848 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2849 | { | |
16e42959 | 2850 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2851 | struct nfs_removeargs args = { |
1da177e4 | 2852 | .fh = NFS_FH(dir), |
26fe5750 | 2853 | .name = *name, |
16e42959 | 2854 | }; |
4fdc17b2 | 2855 | struct nfs_removeres res = { |
16e42959 | 2856 | .server = server, |
1da177e4 | 2857 | }; |
1da177e4 | 2858 | struct rpc_message msg = { |
4fdc17b2 TM |
2859 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2860 | .rpc_argp = &args, | |
2861 | .rpc_resp = &res, | |
1da177e4 | 2862 | }; |
778d2817 | 2863 | int status; |
1da177e4 | 2864 | |
7c513058 | 2865 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 2866 | if (status == 0) |
16e42959 | 2867 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
2868 | return status; |
2869 | } | |
2870 | ||
2871 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2872 | { | |
2873 | struct nfs4_exception exception = { }; | |
2874 | int err; | |
2875 | do { | |
2876 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2877 | _nfs4_proc_remove(dir, name), | |
2878 | &exception); | |
2879 | } while (exception.retry); | |
2880 | return err; | |
2881 | } | |
2882 | ||
e4eff1a6 | 2883 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2884 | { |
e4eff1a6 TM |
2885 | struct nfs_server *server = NFS_SERVER(dir); |
2886 | struct nfs_removeargs *args = msg->rpc_argp; | |
2887 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2888 | |
e4eff1a6 | 2889 | res->server = server; |
1da177e4 | 2890 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2891 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2892 | } |
2893 | ||
34e137cc BS |
2894 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
2895 | { | |
2896 | if (nfs4_setup_sequence(NFS_SERVER(data->dir), | |
2897 | &data->args.seq_args, | |
2898 | &data->res.seq_res, | |
2899 | task)) | |
2900 | return; | |
2901 | rpc_call_start(task); | |
1da177e4 LT |
2902 | } |
2903 | ||
e4eff1a6 | 2904 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2905 | { |
e4eff1a6 TM |
2906 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2907 | ||
14516c3a TM |
2908 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2909 | return 0; | |
9e33bed5 | 2910 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2911 | return 0; |
2912 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 2913 | return 1; |
1da177e4 LT |
2914 | } |
2915 | ||
d3d4152a JL |
2916 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2917 | { | |
2918 | struct nfs_server *server = NFS_SERVER(dir); | |
2919 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2920 | struct nfs_renameres *res = msg->rpc_resp; | |
2921 | ||
2922 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 2923 | res->server = server; |
9d12b216 | 2924 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
2925 | } |
2926 | ||
c6bfa1a1 BS |
2927 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
2928 | { | |
2929 | if (nfs4_setup_sequence(NFS_SERVER(data->old_dir), | |
2930 | &data->args.seq_args, | |
2931 | &data->res.seq_res, | |
2932 | task)) | |
2933 | return; | |
2934 | rpc_call_start(task); | |
d3d4152a JL |
2935 | } |
2936 | ||
2937 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2938 | struct inode *new_dir) | |
2939 | { | |
2940 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2941 | ||
2942 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2943 | return 0; | |
2944 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2945 | return 0; | |
2946 | ||
2947 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 2948 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
2949 | return 1; |
2950 | } | |
2951 | ||
1da177e4 LT |
2952 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2953 | struct inode *new_dir, struct qstr *new_name) | |
2954 | { | |
6caf2c82 | 2955 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2956 | struct nfs_renameargs arg = { |
1da177e4 LT |
2957 | .old_dir = NFS_FH(old_dir), |
2958 | .new_dir = NFS_FH(new_dir), | |
2959 | .old_name = old_name, | |
2960 | .new_name = new_name, | |
6caf2c82 | 2961 | }; |
e8582a8b | 2962 | struct nfs_renameres res = { |
6caf2c82 | 2963 | .server = server, |
1da177e4 | 2964 | }; |
1da177e4 LT |
2965 | struct rpc_message msg = { |
2966 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2967 | .rpc_argp = &arg, | |
2968 | .rpc_resp = &res, | |
2969 | }; | |
011fff72 | 2970 | int status = -ENOMEM; |
1da177e4 | 2971 | |
7c513058 | 2972 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2973 | if (!status) { |
2974 | update_changeattr(old_dir, &res.old_cinfo); | |
2975 | update_changeattr(new_dir, &res.new_cinfo); | |
2976 | } | |
2977 | return status; | |
2978 | } | |
2979 | ||
2980 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2981 | struct inode *new_dir, struct qstr *new_name) | |
2982 | { | |
2983 | struct nfs4_exception exception = { }; | |
2984 | int err; | |
2985 | do { | |
2986 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2987 | _nfs4_proc_rename(old_dir, old_name, | |
2988 | new_dir, new_name), | |
2989 | &exception); | |
2990 | } while (exception.retry); | |
2991 | return err; | |
2992 | } | |
2993 | ||
2994 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2995 | { | |
91ba2eee | 2996 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2997 | struct nfs4_link_arg arg = { |
2998 | .fh = NFS_FH(inode), | |
2999 | .dir_fh = NFS_FH(dir), | |
3000 | .name = name, | |
91ba2eee TM |
3001 | .bitmask = server->attr_bitmask, |
3002 | }; | |
91ba2eee TM |
3003 | struct nfs4_link_res res = { |
3004 | .server = server, | |
1da177e4 | 3005 | }; |
1da177e4 LT |
3006 | struct rpc_message msg = { |
3007 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3008 | .rpc_argp = &arg, | |
91ba2eee | 3009 | .rpc_resp = &res, |
1da177e4 | 3010 | }; |
136f2627 TM |
3011 | int status = -ENOMEM; |
3012 | ||
3013 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3014 | if (res.fattr == NULL) |
136f2627 | 3015 | goto out; |
1da177e4 | 3016 | |
7c513058 | 3017 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3018 | if (!status) { |
3019 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3020 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3021 | } |
136f2627 | 3022 | out: |
136f2627 | 3023 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3024 | return status; |
3025 | } | |
3026 | ||
3027 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3028 | { | |
3029 | struct nfs4_exception exception = { }; | |
3030 | int err; | |
3031 | do { | |
3032 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3033 | _nfs4_proc_link(inode, dir, name), | |
3034 | &exception); | |
3035 | } while (exception.retry); | |
3036 | return err; | |
3037 | } | |
3038 | ||
57dc9a57 TM |
3039 | struct nfs4_createdata { |
3040 | struct rpc_message msg; | |
3041 | struct nfs4_create_arg arg; | |
3042 | struct nfs4_create_res res; | |
3043 | struct nfs_fh fh; | |
3044 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3045 | }; |
3046 | ||
3047 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3048 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3049 | { | |
3050 | struct nfs4_createdata *data; | |
3051 | ||
3052 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3053 | if (data != NULL) { | |
3054 | struct nfs_server *server = NFS_SERVER(dir); | |
3055 | ||
3056 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3057 | data->msg.rpc_argp = &data->arg; | |
3058 | data->msg.rpc_resp = &data->res; | |
3059 | data->arg.dir_fh = NFS_FH(dir); | |
3060 | data->arg.server = server; | |
3061 | data->arg.name = name; | |
3062 | data->arg.attrs = sattr; | |
3063 | data->arg.ftype = ftype; | |
3064 | data->arg.bitmask = server->attr_bitmask; | |
3065 | data->res.server = server; | |
3066 | data->res.fh = &data->fh; | |
3067 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3068 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3069 | } |
3070 | return data; | |
3071 | } | |
3072 | ||
3073 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3074 | { | |
7c513058 | 3075 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3076 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3077 | if (status == 0) { |
3078 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3079 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3080 | } | |
3081 | return status; | |
3082 | } | |
3083 | ||
3084 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3085 | { | |
3086 | kfree(data); | |
3087 | } | |
3088 | ||
4f390c15 | 3089 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3090 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3091 | { |
57dc9a57 TM |
3092 | struct nfs4_createdata *data; |
3093 | int status = -ENAMETOOLONG; | |
1da177e4 | 3094 | |
94a6d753 | 3095 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3096 | goto out; |
4f390c15 | 3097 | |
57dc9a57 TM |
3098 | status = -ENOMEM; |
3099 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3100 | if (data == NULL) | |
3101 | goto out; | |
3102 | ||
3103 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3104 | data->arg.u.symlink.pages = &page; | |
3105 | data->arg.u.symlink.len = len; | |
1da177e4 | 3106 | |
57dc9a57 TM |
3107 | status = nfs4_do_create(dir, dentry, data); |
3108 | ||
3109 | nfs4_free_createdata(data); | |
3110 | out: | |
1da177e4 LT |
3111 | return status; |
3112 | } | |
3113 | ||
4f390c15 | 3114 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3115 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3116 | { |
3117 | struct nfs4_exception exception = { }; | |
3118 | int err; | |
3119 | do { | |
3120 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3121 | _nfs4_proc_symlink(dir, dentry, page, |
3122 | len, sattr), | |
1da177e4 LT |
3123 | &exception); |
3124 | } while (exception.retry); | |
3125 | return err; | |
3126 | } | |
3127 | ||
3128 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3129 | struct iattr *sattr) | |
3130 | { | |
57dc9a57 TM |
3131 | struct nfs4_createdata *data; |
3132 | int status = -ENOMEM; | |
1da177e4 | 3133 | |
57dc9a57 TM |
3134 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3135 | if (data == NULL) | |
3136 | goto out; | |
3137 | ||
3138 | status = nfs4_do_create(dir, dentry, data); | |
3139 | ||
3140 | nfs4_free_createdata(data); | |
3141 | out: | |
1da177e4 LT |
3142 | return status; |
3143 | } | |
3144 | ||
3145 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3146 | struct iattr *sattr) | |
3147 | { | |
3148 | struct nfs4_exception exception = { }; | |
3149 | int err; | |
a8a5da99 AK |
3150 | |
3151 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3152 | do { |
3153 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3154 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3155 | &exception); | |
3156 | } while (exception.retry); | |
3157 | return err; | |
3158 | } | |
3159 | ||
3160 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3161 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3162 | { |
3163 | struct inode *dir = dentry->d_inode; | |
3164 | struct nfs4_readdir_arg args = { | |
3165 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3166 | .pages = pages, |
1da177e4 LT |
3167 | .pgbase = 0, |
3168 | .count = count, | |
96d25e53 | 3169 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3170 | .plus = plus, |
1da177e4 LT |
3171 | }; |
3172 | struct nfs4_readdir_res res; | |
3173 | struct rpc_message msg = { | |
3174 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3175 | .rpc_argp = &args, | |
3176 | .rpc_resp = &res, | |
3177 | .rpc_cred = cred, | |
3178 | }; | |
3179 | int status; | |
3180 | ||
3110ff80 | 3181 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3182 | dentry->d_parent->d_name.name, |
3183 | dentry->d_name.name, | |
3184 | (unsigned long long)cookie); | |
1da177e4 LT |
3185 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3186 | res.pgbase = args.pgbase; | |
7c513058 | 3187 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3188 | if (status >= 0) { |
1da177e4 | 3189 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3190 | status += args.pgbase; |
3191 | } | |
c4812998 TM |
3192 | |
3193 | nfs_invalidate_atime(dir); | |
3194 | ||
3110ff80 | 3195 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3196 | return status; |
3197 | } | |
3198 | ||
3199 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3200 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3201 | { |
3202 | struct nfs4_exception exception = { }; | |
3203 | int err; | |
3204 | do { | |
3205 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3206 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3207 | pages, count, plus), |
1da177e4 LT |
3208 | &exception); |
3209 | } while (exception.retry); | |
3210 | return err; | |
3211 | } | |
3212 | ||
3213 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3214 | struct iattr *sattr, dev_t rdev) | |
3215 | { | |
57dc9a57 TM |
3216 | struct nfs4_createdata *data; |
3217 | int mode = sattr->ia_mode; | |
3218 | int status = -ENOMEM; | |
1da177e4 LT |
3219 | |
3220 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3221 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3222 | |
3223 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3224 | if (data == NULL) | |
3225 | goto out; | |
3226 | ||
1da177e4 | 3227 | if (S_ISFIFO(mode)) |
57dc9a57 | 3228 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3229 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3230 | data->arg.ftype = NF4BLK; |
3231 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3232 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3233 | } |
3234 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3235 | data->arg.ftype = NF4CHR; |
3236 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3237 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3238 | } |
1da177e4 | 3239 | |
57dc9a57 TM |
3240 | status = nfs4_do_create(dir, dentry, data); |
3241 | ||
3242 | nfs4_free_createdata(data); | |
3243 | out: | |
1da177e4 LT |
3244 | return status; |
3245 | } | |
3246 | ||
3247 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3248 | struct iattr *sattr, dev_t rdev) | |
3249 | { | |
3250 | struct nfs4_exception exception = { }; | |
3251 | int err; | |
a8a5da99 AK |
3252 | |
3253 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3254 | do { |
3255 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3256 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3257 | &exception); | |
3258 | } while (exception.retry); | |
3259 | return err; | |
3260 | } | |
3261 | ||
3262 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3263 | struct nfs_fsstat *fsstat) | |
3264 | { | |
3265 | struct nfs4_statfs_arg args = { | |
3266 | .fh = fhandle, | |
3267 | .bitmask = server->attr_bitmask, | |
3268 | }; | |
24ad148a BH |
3269 | struct nfs4_statfs_res res = { |
3270 | .fsstat = fsstat, | |
3271 | }; | |
1da177e4 LT |
3272 | struct rpc_message msg = { |
3273 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3274 | .rpc_argp = &args, | |
24ad148a | 3275 | .rpc_resp = &res, |
1da177e4 LT |
3276 | }; |
3277 | ||
0e574af1 | 3278 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3279 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3280 | } |
3281 | ||
3282 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3283 | { | |
3284 | struct nfs4_exception exception = { }; | |
3285 | int err; | |
3286 | do { | |
3287 | err = nfs4_handle_exception(server, | |
3288 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3289 | &exception); | |
3290 | } while (exception.retry); | |
3291 | return err; | |
3292 | } | |
3293 | ||
3294 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3295 | struct nfs_fsinfo *fsinfo) | |
3296 | { | |
3297 | struct nfs4_fsinfo_arg args = { | |
3298 | .fh = fhandle, | |
3299 | .bitmask = server->attr_bitmask, | |
3300 | }; | |
3dda5e43 BH |
3301 | struct nfs4_fsinfo_res res = { |
3302 | .fsinfo = fsinfo, | |
3303 | }; | |
1da177e4 LT |
3304 | struct rpc_message msg = { |
3305 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3306 | .rpc_argp = &args, | |
3dda5e43 | 3307 | .rpc_resp = &res, |
1da177e4 LT |
3308 | }; |
3309 | ||
7c513058 | 3310 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3311 | } |
3312 | ||
3313 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3314 | { | |
3315 | struct nfs4_exception exception = { }; | |
3316 | int err; | |
3317 | ||
3318 | do { | |
3319 | err = nfs4_handle_exception(server, | |
3320 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3321 | &exception); | |
3322 | } while (exception.retry); | |
3323 | return err; | |
3324 | } | |
3325 | ||
3326 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3327 | { | |
0e574af1 | 3328 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3329 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3330 | } | |
3331 | ||
3332 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3333 | struct nfs_pathconf *pathconf) | |
3334 | { | |
3335 | struct nfs4_pathconf_arg args = { | |
3336 | .fh = fhandle, | |
3337 | .bitmask = server->attr_bitmask, | |
3338 | }; | |
d45b2989 BH |
3339 | struct nfs4_pathconf_res res = { |
3340 | .pathconf = pathconf, | |
3341 | }; | |
1da177e4 LT |
3342 | struct rpc_message msg = { |
3343 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3344 | .rpc_argp = &args, | |
d45b2989 | 3345 | .rpc_resp = &res, |
1da177e4 LT |
3346 | }; |
3347 | ||
3348 | /* None of the pathconf attributes are mandatory to implement */ | |
3349 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3350 | memset(pathconf, 0, sizeof(*pathconf)); | |
3351 | return 0; | |
3352 | } | |
3353 | ||
0e574af1 | 3354 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3355 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3356 | } |
3357 | ||
3358 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3359 | struct nfs_pathconf *pathconf) | |
3360 | { | |
3361 | struct nfs4_exception exception = { }; | |
3362 | int err; | |
3363 | ||
3364 | do { | |
3365 | err = nfs4_handle_exception(server, | |
3366 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3367 | &exception); | |
3368 | } while (exception.retry); | |
3369 | return err; | |
3370 | } | |
3371 | ||
d20581aa BH |
3372 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3373 | { | |
cd841605 | 3374 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3375 | } |
3376 | ||
cbdabc7f | 3377 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3378 | { |
cd841605 | 3379 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3380 | |
9e33bed5 | 3381 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3382 | rpc_restart_call_prepare(task); |
ec06c096 | 3383 | return -EAGAIN; |
1da177e4 | 3384 | } |
8850df99 | 3385 | |
d20581aa | 3386 | __nfs4_read_done_cb(data); |
1da177e4 | 3387 | if (task->tk_status > 0) |
ec06c096 TM |
3388 | renew_lease(server, data->timestamp); |
3389 | return 0; | |
1da177e4 LT |
3390 | } |
3391 | ||
cbdabc7f AA |
3392 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3393 | { | |
3394 | ||
3395 | dprintk("--> %s\n", __func__); | |
3396 | ||
3397 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3398 | return -EAGAIN; | |
3399 | ||
d20581aa BH |
3400 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3401 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3402 | } |
3403 | ||
bdc7f021 | 3404 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3405 | { |
1da177e4 | 3406 | data->timestamp = jiffies; |
cbdabc7f | 3407 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3408 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3409 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3410 | } |
3411 | ||
ea7c3303 BS |
3412 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3413 | { | |
cd841605 | 3414 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
ea7c3303 BS |
3415 | &data->args.seq_args, |
3416 | &data->res.seq_res, | |
3417 | task)) | |
3418 | return; | |
3419 | rpc_call_start(task); | |
1da177e4 LT |
3420 | } |
3421 | ||
b029bc9b | 3422 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3423 | { |
cd841605 | 3424 | struct inode *inode = data->header->inode; |
1da177e4 | 3425 | |
9e33bed5 | 3426 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3427 | rpc_restart_call_prepare(task); |
788e7a89 | 3428 | return -EAGAIN; |
1da177e4 | 3429 | } |
4f9838c7 | 3430 | if (task->tk_status >= 0) { |
1da177e4 | 3431 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3432 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3433 | } |
788e7a89 | 3434 | return 0; |
1da177e4 LT |
3435 | } |
3436 | ||
b029bc9b FI |
3437 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3438 | { | |
3439 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3440 | return -EAGAIN; | |
d20581aa BH |
3441 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3442 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3443 | } |
3444 | ||
5a37f851 TM |
3445 | static |
3446 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3447 | { |
5a37f851 TM |
3448 | const struct nfs_pgio_header *hdr = data->header; |
3449 | ||
3450 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3451 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3452 | return false; | |
3453 | /* Otherwise, request attributes if and only if we don't hold | |
3454 | * a delegation | |
3455 | */ | |
3456 | return nfs_have_delegation(hdr->inode, FMODE_READ) == 0; | |
a69aef14 | 3457 | } |
a69aef14 | 3458 | |
bdc7f021 | 3459 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3460 | { |
cd841605 | 3461 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3462 | |
5a37f851 | 3463 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3464 | data->args.bitmask = NULL; |
3465 | data->res.fattr = NULL; | |
3466 | } else | |
3467 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3468 | |
b029bc9b FI |
3469 | if (!data->write_done_cb) |
3470 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3471 | data->res.server = server; |
1da177e4 LT |
3472 | data->timestamp = jiffies; |
3473 | ||
bdc7f021 | 3474 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3475 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3476 | } |
3477 | ||
c6cb80d0 BS |
3478 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3479 | { | |
cd841605 | 3480 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
c6cb80d0 BS |
3481 | &data->args.seq_args, |
3482 | &data->res.seq_res, | |
3483 | task)) | |
3484 | return; | |
3485 | rpc_call_start(task); | |
1da177e4 LT |
3486 | } |
3487 | ||
0b7c0153 | 3488 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 BS |
3489 | { |
3490 | if (nfs4_setup_sequence(NFS_SERVER(data->inode), | |
3491 | &data->args.seq_args, | |
3492 | &data->res.seq_res, | |
3493 | task)) | |
3494 | return; | |
3495 | rpc_call_start(task); | |
1da177e4 LT |
3496 | } |
3497 | ||
0b7c0153 | 3498 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3499 | { |
1da177e4 | 3500 | struct inode *inode = data->inode; |
14516c3a | 3501 | |
9e33bed5 | 3502 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3503 | rpc_restart_call_prepare(task); |
788e7a89 | 3504 | return -EAGAIN; |
1da177e4 | 3505 | } |
788e7a89 | 3506 | return 0; |
1da177e4 LT |
3507 | } |
3508 | ||
0b7c0153 | 3509 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3510 | { |
3511 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3512 | return -EAGAIN; | |
0b7c0153 | 3513 | return data->commit_done_cb(task, data); |
5f452431 FI |
3514 | } |
3515 | ||
0b7c0153 | 3516 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3517 | { |
788e7a89 | 3518 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3519 | |
0b7c0153 FI |
3520 | if (data->commit_done_cb == NULL) |
3521 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3522 | data->res.server = server; |
bdc7f021 | 3523 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3524 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3525 | } |
3526 | ||
9bc4e3ca CL |
3527 | struct nfs4_renewdata { |
3528 | struct nfs_client *client; | |
3529 | unsigned long timestamp; | |
3530 | }; | |
3531 | ||
1da177e4 LT |
3532 | /* |
3533 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3534 | * standalone procedure for queueing an asynchronous RENEW. | |
3535 | */ | |
9bc4e3ca | 3536 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3537 | { |
9bc4e3ca CL |
3538 | struct nfs4_renewdata *data = calldata; |
3539 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3540 | |
0851de06 AB |
3541 | if (atomic_read(&clp->cl_count) > 1) |
3542 | nfs4_schedule_state_renewal(clp); | |
3543 | nfs_put_client(clp); | |
9bc4e3ca | 3544 | kfree(data); |
dc96aef9 AB |
3545 | } |
3546 | ||
9bc4e3ca | 3547 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3548 | { |
9bc4e3ca CL |
3549 | struct nfs4_renewdata *data = calldata; |
3550 | struct nfs_client *clp = data->client; | |
3551 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3552 | |
3553 | if (task->tk_status < 0) { | |
95baa25c | 3554 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3555 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3556 | return; | |
3557 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3558 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3559 | return; |
3560 | } | |
3561 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3562 | } |
452e9352 | 3563 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3564 | } |
3565 | ||
963d8fe5 TM |
3566 | static const struct rpc_call_ops nfs4_renew_ops = { |
3567 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3568 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3569 | }; |
3570 | ||
2f60ea6b | 3571 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3572 | { |
3573 | struct rpc_message msg = { | |
3574 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3575 | .rpc_argp = clp, | |
b4454fe1 | 3576 | .rpc_cred = cred, |
1da177e4 | 3577 | }; |
9bc4e3ca | 3578 | struct nfs4_renewdata *data; |
1da177e4 | 3579 | |
2f60ea6b TM |
3580 | if (renew_flags == 0) |
3581 | return 0; | |
0851de06 AB |
3582 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3583 | return -EIO; | |
b569ad34 | 3584 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3585 | if (data == NULL) |
3586 | return -ENOMEM; | |
3587 | data->client = clp; | |
3588 | data->timestamp = jiffies; | |
1da177e4 | 3589 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3590 | &nfs4_renew_ops, data); |
1da177e4 LT |
3591 | } |
3592 | ||
8534d4ec | 3593 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3594 | { |
3595 | struct rpc_message msg = { | |
3596 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3597 | .rpc_argp = clp, | |
b4454fe1 | 3598 | .rpc_cred = cred, |
1da177e4 LT |
3599 | }; |
3600 | unsigned long now = jiffies; | |
3601 | int status; | |
3602 | ||
3603 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3604 | if (status < 0) | |
3605 | return status; | |
452e9352 | 3606 | do_renew_lease(clp, now); |
1da177e4 LT |
3607 | return 0; |
3608 | } | |
3609 | ||
aa1870af BF |
3610 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3611 | { | |
3612 | return (server->caps & NFS_CAP_ACLS) | |
3613 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3614 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3615 | } | |
3616 | ||
3617 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3618 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3619 | * the stack. | |
3620 | */ | |
3621 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3622 | ||
e9e3d724 NH |
3623 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3624 | struct page **pages, unsigned int *pgbase) | |
3625 | { | |
3626 | struct page *newpage, **spages; | |
3627 | int rc = 0; | |
3628 | size_t len; | |
3629 | spages = pages; | |
3630 | ||
3631 | do { | |
43b7c3f0 | 3632 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3633 | newpage = alloc_page(GFP_KERNEL); |
3634 | ||
3635 | if (newpage == NULL) | |
3636 | goto unwind; | |
3637 | memcpy(page_address(newpage), buf, len); | |
3638 | buf += len; | |
3639 | buflen -= len; | |
3640 | *pages++ = newpage; | |
3641 | rc++; | |
3642 | } while (buflen != 0); | |
3643 | ||
3644 | return rc; | |
3645 | ||
3646 | unwind: | |
3647 | for(; rc > 0; rc--) | |
3648 | __free_page(spages[rc-1]); | |
3649 | return -ENOMEM; | |
3650 | } | |
3651 | ||
e50a1c2e BF |
3652 | struct nfs4_cached_acl { |
3653 | int cached; | |
3654 | size_t len; | |
3e9d4154 | 3655 | char data[0]; |
e50a1c2e BF |
3656 | }; |
3657 | ||
3658 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3659 | { | |
3660 | struct nfs_inode *nfsi = NFS_I(inode); | |
3661 | ||
3662 | spin_lock(&inode->i_lock); | |
3663 | kfree(nfsi->nfs4_acl); | |
3664 | nfsi->nfs4_acl = acl; | |
3665 | spin_unlock(&inode->i_lock); | |
3666 | } | |
3667 | ||
3668 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3669 | { | |
3670 | nfs4_set_cached_acl(inode, NULL); | |
3671 | } | |
3672 | ||
3673 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3674 | { | |
3675 | struct nfs_inode *nfsi = NFS_I(inode); | |
3676 | struct nfs4_cached_acl *acl; | |
3677 | int ret = -ENOENT; | |
3678 | ||
3679 | spin_lock(&inode->i_lock); | |
3680 | acl = nfsi->nfs4_acl; | |
3681 | if (acl == NULL) | |
3682 | goto out; | |
3683 | if (buf == NULL) /* user is just asking for length */ | |
3684 | goto out_len; | |
3685 | if (acl->cached == 0) | |
3686 | goto out; | |
3687 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3688 | if (acl->len > buflen) | |
3689 | goto out; | |
3690 | memcpy(buf, acl->data, acl->len); | |
3691 | out_len: | |
3692 | ret = acl->len; | |
3693 | out: | |
3694 | spin_unlock(&inode->i_lock); | |
3695 | return ret; | |
3696 | } | |
3697 | ||
5794d21e | 3698 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3699 | { |
3700 | struct nfs4_cached_acl *acl; | |
3701 | ||
5794d21e | 3702 | if (pages && acl_len <= PAGE_SIZE) { |
e50a1c2e BF |
3703 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); |
3704 | if (acl == NULL) | |
3705 | goto out; | |
3706 | acl->cached = 1; | |
5794d21e | 3707 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3708 | } else { |
3709 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3710 | if (acl == NULL) | |
3711 | goto out; | |
3712 | acl->cached = 0; | |
3713 | } | |
3714 | acl->len = acl_len; | |
3715 | out: | |
3716 | nfs4_set_cached_acl(inode, acl); | |
3717 | } | |
3718 | ||
bf118a34 AA |
3719 | /* |
3720 | * The getxattr API returns the required buffer length when called with a | |
3721 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3722 | * the required buf. On a NULL buf, we send a page of data to the server | |
3723 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3724 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3725 | * the cache. If not so, we throw away the page, and cache the required | |
3726 | * length. The next getxattr call will then produce another round trip to | |
3727 | * the server, this time with the input buf of the required size. | |
3728 | */ | |
16b4289c | 3729 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3730 | { |
bf118a34 | 3731 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3732 | struct nfs_getaclargs args = { |
3733 | .fh = NFS_FH(inode), | |
3734 | .acl_pages = pages, | |
3735 | .acl_len = buflen, | |
3736 | }; | |
663c79b3 BH |
3737 | struct nfs_getaclres res = { |
3738 | .acl_len = buflen, | |
3739 | }; | |
aa1870af BF |
3740 | struct rpc_message msg = { |
3741 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3742 | .rpc_argp = &args, | |
663c79b3 | 3743 | .rpc_resp = &res, |
aa1870af | 3744 | }; |
bf118a34 | 3745 | int ret = -ENOMEM, npages, i, acl_len = 0; |
aa1870af | 3746 | |
bf118a34 AA |
3747 | npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; |
3748 | /* As long as we're doing a round trip to the server anyway, | |
3749 | * let's be prepared for a page of acl data. */ | |
3750 | if (npages == 0) | |
3751 | npages = 1; | |
3752 | ||
5a006899 SP |
3753 | /* Add an extra page to handle the bitmap returned */ |
3754 | npages++; | |
3755 | ||
bf118a34 AA |
3756 | for (i = 0; i < npages; i++) { |
3757 | pages[i] = alloc_page(GFP_KERNEL); | |
3758 | if (!pages[i]) | |
3759 | goto out_free; | |
e50a1c2e | 3760 | } |
5a006899 SP |
3761 | |
3762 | /* for decoding across pages */ | |
3763 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3764 | if (!res.acl_scratch) | |
3765 | goto out_free; | |
3766 | ||
bf118a34 AA |
3767 | args.acl_len = npages * PAGE_SIZE; |
3768 | args.acl_pgbase = 0; | |
5a006899 | 3769 | |
bf118a34 AA |
3770 | /* Let decode_getfacl know not to fail if the ACL data is larger than |
3771 | * the page we send as a guess */ | |
3772 | if (buf == NULL) | |
3773 | res.acl_flags |= NFS4_ACL_LEN_REQUEST; | |
bf118a34 | 3774 | |
de040bec | 3775 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3776 | __func__, buf, buflen, npages, args.acl_len); |
3777 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3778 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3779 | if (ret) |
3780 | goto out_free; | |
bf118a34 AA |
3781 | |
3782 | acl_len = res.acl_len - res.acl_data_offset; | |
3783 | if (acl_len > args.acl_len) | |
5794d21e | 3784 | nfs4_write_cached_acl(inode, NULL, 0, acl_len); |
e50a1c2e | 3785 | else |
5794d21e | 3786 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, |
bf118a34 | 3787 | acl_len); |
e50a1c2e BF |
3788 | if (buf) { |
3789 | ret = -ERANGE; | |
bf118a34 | 3790 | if (acl_len > buflen) |
e50a1c2e | 3791 | goto out_free; |
bf118a34 | 3792 | _copy_from_pages(buf, pages, res.acl_data_offset, |
20e0fa98 | 3793 | acl_len); |
e50a1c2e | 3794 | } |
bf118a34 | 3795 | ret = acl_len; |
e50a1c2e | 3796 | out_free: |
bf118a34 AA |
3797 | for (i = 0; i < npages; i++) |
3798 | if (pages[i]) | |
3799 | __free_page(pages[i]); | |
331818f1 TM |
3800 | if (res.acl_scratch) |
3801 | __free_page(res.acl_scratch); | |
aa1870af BF |
3802 | return ret; |
3803 | } | |
3804 | ||
16b4289c TM |
3805 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3806 | { | |
3807 | struct nfs4_exception exception = { }; | |
3808 | ssize_t ret; | |
3809 | do { | |
3810 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3811 | if (ret >= 0) | |
3812 | break; | |
3813 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3814 | } while (exception.retry); | |
3815 | return ret; | |
3816 | } | |
3817 | ||
e50a1c2e BF |
3818 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3819 | { | |
3820 | struct nfs_server *server = NFS_SERVER(inode); | |
3821 | int ret; | |
3822 | ||
3823 | if (!nfs4_server_supports_acls(server)) | |
3824 | return -EOPNOTSUPP; | |
3825 | ret = nfs_revalidate_inode(server, inode); | |
3826 | if (ret < 0) | |
3827 | return ret; | |
08a22b39 AK |
3828 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3829 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3830 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3831 | if (ret != -ENOENT) | |
bf118a34 AA |
3832 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3833 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3834 | return ret; |
3835 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3836 | } | |
3837 | ||
16b4289c | 3838 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3839 | { |
3840 | struct nfs_server *server = NFS_SERVER(inode); | |
3841 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3842 | struct nfs_setaclargs arg = { | |
3843 | .fh = NFS_FH(inode), | |
3844 | .acl_pages = pages, | |
3845 | .acl_len = buflen, | |
3846 | }; | |
73c403a9 | 3847 | struct nfs_setaclres res; |
4b580ee3 BF |
3848 | struct rpc_message msg = { |
3849 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3850 | .rpc_argp = &arg, | |
73c403a9 | 3851 | .rpc_resp = &res, |
4b580ee3 | 3852 | }; |
e9e3d724 | 3853 | int ret, i; |
4b580ee3 BF |
3854 | |
3855 | if (!nfs4_server_supports_acls(server)) | |
3856 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3857 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3858 | if (i < 0) | |
3859 | return i; | |
642ac549 | 3860 | nfs_inode_return_delegation(inode); |
7c513058 | 3861 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3862 | |
3863 | /* | |
3864 | * Free each page after tx, so the only ref left is | |
3865 | * held by the network stack | |
3866 | */ | |
3867 | for (; i > 0; i--) | |
3868 | put_page(pages[i-1]); | |
3869 | ||
08a22b39 AK |
3870 | /* |
3871 | * Acl update can result in inode attribute update. | |
3872 | * so mark the attribute cache invalid. | |
3873 | */ | |
3874 | spin_lock(&inode->i_lock); | |
3875 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3876 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3877 | nfs_access_zap_cache(inode); |
3878 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3879 | return ret; |
3880 | } | |
3881 | ||
16b4289c TM |
3882 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3883 | { | |
3884 | struct nfs4_exception exception = { }; | |
3885 | int err; | |
3886 | do { | |
3887 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3888 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3889 | &exception); | |
3890 | } while (exception.retry); | |
3891 | return err; | |
3892 | } | |
3893 | ||
1da177e4 | 3894 | static int |
aa5190d0 | 3895 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3896 | { |
aa5190d0 TM |
3897 | struct nfs_client *clp = server->nfs_client; |
3898 | ||
3899 | if (task->tk_status >= 0) | |
1da177e4 LT |
3900 | return 0; |
3901 | switch(task->tk_status) { | |
a1d0b5ee | 3902 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3903 | case -NFS4ERR_ADMIN_REVOKED: |
3904 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
3905 | if (state == NULL) |
3906 | break; | |
3907 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3908 | case -NFS4ERR_OPENMODE: |
3909 | if (state == NULL) | |
3910 | break; | |
0400a6b0 TM |
3911 | nfs4_schedule_stateid_recovery(server, state); |
3912 | goto wait_on_recovery; | |
0ced63d1 TM |
3913 | case -NFS4ERR_EXPIRED: |
3914 | if (state != NULL) | |
3915 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3916 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3917 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3918 | nfs4_schedule_lease_recovery(clp); |
3919 | goto wait_on_recovery; | |
4745e315 AA |
3920 | #if defined(CONFIG_NFS_V4_1) |
3921 | case -NFS4ERR_BADSESSION: | |
3922 | case -NFS4ERR_BADSLOT: | |
3923 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3924 | case -NFS4ERR_DEADSESSION: | |
3925 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3926 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3927 | case -NFS4ERR_SEQ_MISORDERED: | |
3928 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3929 | task->tk_status); | |
9f594791 | 3930 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
3931 | task->tk_status = 0; |
3932 | return -EAGAIN; | |
3933 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3934 | case -NFS4ERR_DELAY: |
aa5190d0 | 3935 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3936 | case -NFS4ERR_GRACE: |
2c643488 | 3937 | case -EKEYEXPIRED: |
1da177e4 LT |
3938 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3939 | task->tk_status = 0; | |
3940 | return -EAGAIN; | |
a8a4ae3a | 3941 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3942 | case -NFS4ERR_OLD_STATEID: |
3943 | task->tk_status = 0; | |
3944 | return -EAGAIN; | |
3945 | } | |
3946 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3947 | return 0; | |
0400a6b0 | 3948 | wait_on_recovery: |
a2c0b9e2 | 3949 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3950 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3951 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3952 | task->tk_status = 0; | |
3953 | return -EAGAIN; | |
1da177e4 LT |
3954 | } |
3955 | ||
f092075d CL |
3956 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
3957 | nfs4_verifier *bootverf) | |
cd93710e CL |
3958 | { |
3959 | __be32 verf[2]; | |
3960 | ||
2c820d9a CL |
3961 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
3962 | /* An impossible timestamp guarantees this value | |
3963 | * will never match a generated boot time. */ | |
3964 | verf[0] = 0; | |
3965 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
3966 | } else { | |
f092075d CL |
3967 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
3968 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
3969 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 3970 | } |
cd93710e CL |
3971 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
3972 | } | |
3973 | ||
bb8b27e5 TM |
3974 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3975 | unsigned short port, struct rpc_cred *cred, | |
3976 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3977 | { |
3978 | nfs4_verifier sc_verifier; | |
3979 | struct nfs4_setclientid setclientid = { | |
3980 | .sc_verifier = &sc_verifier, | |
3981 | .sc_prog = program, | |
f4eecd5d | 3982 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3983 | }; |
3984 | struct rpc_message msg = { | |
3985 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3986 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3987 | .rpc_resp = res, |
286d7d6a | 3988 | .rpc_cred = cred, |
1da177e4 | 3989 | }; |
1da177e4 LT |
3990 | int loop = 0; |
3991 | int status; | |
3992 | ||
f092075d | 3993 | nfs4_init_boot_verifier(clp, &sc_verifier); |
1da177e4 LT |
3994 | |
3995 | for(;;) { | |
2446ab60 | 3996 | rcu_read_lock(); |
1da177e4 | 3997 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, |
69dd716c | 3998 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3999 | clp->cl_ipaddr, |
4000 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4001 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
4002 | rpc_peeraddr2str(clp->cl_rpcclient, |
4003 | RPC_DISPLAY_PROTO), | |
78ea323b | 4004 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
4005 | clp->cl_id_uniquifier); |
4006 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
4007 | sizeof(setclientid.sc_netid), |
4008 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4009 | RPC_DISPLAY_NETID)); | |
1da177e4 | 4010 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 4011 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 | 4012 | clp->cl_ipaddr, port >> 8, port & 255); |
2446ab60 | 4013 | rcu_read_unlock(); |
1da177e4 | 4014 | |
1bd714f2 | 4015 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4016 | if (status != -NFS4ERR_CLID_INUSE) |
4017 | break; | |
fd954ae1 TM |
4018 | if (loop != 0) { |
4019 | ++clp->cl_id_uniquifier; | |
1da177e4 | 4020 | break; |
fd954ae1 TM |
4021 | } |
4022 | ++loop; | |
4023 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
4024 | } |
4025 | return status; | |
4026 | } | |
4027 | ||
fd954ae1 | 4028 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4029 | struct nfs4_setclientid_res *arg, |
4030 | struct rpc_cred *cred) | |
1da177e4 LT |
4031 | { |
4032 | struct nfs_fsinfo fsinfo; | |
4033 | struct rpc_message msg = { | |
4034 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4035 | .rpc_argp = arg, |
1da177e4 | 4036 | .rpc_resp = &fsinfo, |
286d7d6a | 4037 | .rpc_cred = cred, |
1da177e4 LT |
4038 | }; |
4039 | unsigned long now; | |
4040 | int status; | |
4041 | ||
4042 | now = jiffies; | |
1bd714f2 | 4043 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4044 | if (status == 0) { |
4045 | spin_lock(&clp->cl_lock); | |
4046 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4047 | clp->cl_last_renewal = now; | |
4048 | spin_unlock(&clp->cl_lock); | |
4049 | } | |
4050 | return status; | |
4051 | } | |
4052 | ||
fe650407 TM |
4053 | struct nfs4_delegreturndata { |
4054 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4055 | struct nfs4_delegreturnres res; |
fe650407 TM |
4056 | struct nfs_fh fh; |
4057 | nfs4_stateid stateid; | |
26e976a8 | 4058 | unsigned long timestamp; |
fa178f29 | 4059 | struct nfs_fattr fattr; |
fe650407 TM |
4060 | int rpc_status; |
4061 | }; | |
4062 | ||
fe650407 TM |
4063 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4064 | { | |
4065 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4066 | |
14516c3a TM |
4067 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4068 | return; | |
938e1010 | 4069 | |
79708861 RL |
4070 | switch (task->tk_status) { |
4071 | case -NFS4ERR_STALE_STATEID: | |
4072 | case -NFS4ERR_EXPIRED: | |
4073 | case 0: | |
fa178f29 | 4074 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4075 | break; |
4076 | default: | |
4077 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4078 | -EAGAIN) { | |
d00c5d43 | 4079 | rpc_restart_call_prepare(task); |
79708861 RL |
4080 | return; |
4081 | } | |
4082 | } | |
4083 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4084 | } |
4085 | ||
4086 | static void nfs4_delegreturn_release(void *calldata) | |
4087 | { | |
fe650407 TM |
4088 | kfree(calldata); |
4089 | } | |
4090 | ||
938e1010 AA |
4091 | #if defined(CONFIG_NFS_V4_1) |
4092 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4093 | { | |
4094 | struct nfs4_delegreturndata *d_data; | |
4095 | ||
4096 | d_data = (struct nfs4_delegreturndata *)data; | |
4097 | ||
035168ab | 4098 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 4099 | &d_data->args.seq_args, |
9d12b216 | 4100 | &d_data->res.seq_res, task)) |
938e1010 AA |
4101 | return; |
4102 | rpc_call_start(task); | |
4103 | } | |
4104 | #endif /* CONFIG_NFS_V4_1 */ | |
4105 | ||
c8d149f3 | 4106 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4107 | #if defined(CONFIG_NFS_V4_1) |
4108 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4109 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4110 | .rpc_call_done = nfs4_delegreturn_done, |
4111 | .rpc_release = nfs4_delegreturn_release, | |
4112 | }; | |
4113 | ||
e6f81075 | 4114 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4115 | { |
4116 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4117 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4118 | struct rpc_task *task; |
5138fde0 TM |
4119 | struct rpc_message msg = { |
4120 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4121 | .rpc_cred = cred, | |
4122 | }; | |
c970aa85 TM |
4123 | struct rpc_task_setup task_setup_data = { |
4124 | .rpc_client = server->client, | |
5138fde0 | 4125 | .rpc_message = &msg, |
c970aa85 TM |
4126 | .callback_ops = &nfs4_delegreturn_ops, |
4127 | .flags = RPC_TASK_ASYNC, | |
4128 | }; | |
e6f81075 | 4129 | int status = 0; |
fe650407 | 4130 | |
8535b2be | 4131 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4132 | if (data == NULL) |
4133 | return -ENOMEM; | |
9d12b216 | 4134 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4135 | data->args.fhandle = &data->fh; |
4136 | data->args.stateid = &data->stateid; | |
9e907fec | 4137 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4138 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4139 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4140 | data->res.fattr = &data->fattr; |
4141 | data->res.server = server; | |
5138fde0 | 4142 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4143 | data->timestamp = jiffies; |
fe650407 TM |
4144 | data->rpc_status = 0; |
4145 | ||
c970aa85 | 4146 | task_setup_data.callback_data = data; |
1174dd1f TM |
4147 | msg.rpc_argp = &data->args; |
4148 | msg.rpc_resp = &data->res; | |
c970aa85 | 4149 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4150 | if (IS_ERR(task)) |
fe650407 | 4151 | return PTR_ERR(task); |
e6f81075 TM |
4152 | if (!issync) |
4153 | goto out; | |
fe650407 | 4154 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4155 | if (status != 0) |
4156 | goto out; | |
4157 | status = data->rpc_status; | |
e144cbcc TM |
4158 | if (status == 0) |
4159 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4160 | else | |
4161 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4162 | out: |
e6b3c4db | 4163 | rpc_put_task(task); |
fe650407 | 4164 | return status; |
1da177e4 LT |
4165 | } |
4166 | ||
e6f81075 | 4167 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4168 | { |
4169 | struct nfs_server *server = NFS_SERVER(inode); | |
4170 | struct nfs4_exception exception = { }; | |
4171 | int err; | |
4172 | do { | |
e6f81075 | 4173 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4174 | switch (err) { |
4175 | case -NFS4ERR_STALE_STATEID: | |
4176 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4177 | case 0: |
4178 | return 0; | |
4179 | } | |
4180 | err = nfs4_handle_exception(server, err, &exception); | |
4181 | } while (exception.retry); | |
4182 | return err; | |
4183 | } | |
4184 | ||
4185 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4186 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4187 | ||
4188 | /* | |
4189 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4190 | */ | |
4191 | static unsigned long | |
4192 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4193 | { | |
d310310c | 4194 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4195 | timeout <<= 1; |
4196 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4197 | return NFS4_LOCK_MAXTIMEOUT; | |
4198 | return timeout; | |
4199 | } | |
4200 | ||
1da177e4 LT |
4201 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4202 | { | |
4203 | struct inode *inode = state->inode; | |
4204 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4205 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4206 | struct nfs_lockt_args arg = { |
1da177e4 | 4207 | .fh = NFS_FH(inode), |
911d1aaf | 4208 | .fl = request, |
1da177e4 | 4209 | }; |
911d1aaf TM |
4210 | struct nfs_lockt_res res = { |
4211 | .denied = request, | |
1da177e4 LT |
4212 | }; |
4213 | struct rpc_message msg = { | |
4214 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4215 | .rpc_argp = &arg, | |
4216 | .rpc_resp = &res, | |
4217 | .rpc_cred = state->owner->so_cred, | |
4218 | }; | |
1da177e4 LT |
4219 | struct nfs4_lock_state *lsp; |
4220 | int status; | |
4221 | ||
911d1aaf | 4222 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4223 | status = nfs4_set_lock_state(state, request); |
4224 | if (status != 0) | |
4225 | goto out; | |
4226 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4227 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4228 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4229 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4230 | switch (status) { |
4231 | case 0: | |
4232 | request->fl_type = F_UNLCK; | |
4233 | break; | |
4234 | case -NFS4ERR_DENIED: | |
4235 | status = 0; | |
1da177e4 | 4236 | } |
70cc6487 | 4237 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4238 | out: |
1da177e4 LT |
4239 | return status; |
4240 | } | |
4241 | ||
4242 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4243 | { | |
4244 | struct nfs4_exception exception = { }; | |
4245 | int err; | |
4246 | ||
4247 | do { | |
4248 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4249 | _nfs4_proc_getlk(state, cmd, request), | |
4250 | &exception); | |
4251 | } while (exception.retry); | |
4252 | return err; | |
4253 | } | |
4254 | ||
4255 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4256 | { | |
4257 | int res = 0; | |
4258 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4259 | case FL_POSIX: | |
4260 | res = posix_lock_file_wait(file, fl); | |
4261 | break; | |
4262 | case FL_FLOCK: | |
4263 | res = flock_lock_file_wait(file, fl); | |
4264 | break; | |
4265 | default: | |
4266 | BUG(); | |
4267 | } | |
1da177e4 LT |
4268 | return res; |
4269 | } | |
4270 | ||
faf5f49c | 4271 | struct nfs4_unlockdata { |
911d1aaf TM |
4272 | struct nfs_locku_args arg; |
4273 | struct nfs_locku_res res; | |
faf5f49c TM |
4274 | struct nfs4_lock_state *lsp; |
4275 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4276 | struct file_lock fl; |
4277 | const struct nfs_server *server; | |
26e976a8 | 4278 | unsigned long timestamp; |
faf5f49c TM |
4279 | }; |
4280 | ||
911d1aaf TM |
4281 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4282 | struct nfs_open_context *ctx, | |
4283 | struct nfs4_lock_state *lsp, | |
4284 | struct nfs_seqid *seqid) | |
4285 | { | |
4286 | struct nfs4_unlockdata *p; | |
4287 | struct inode *inode = lsp->ls_state->inode; | |
4288 | ||
8535b2be | 4289 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4290 | if (p == NULL) |
4291 | return NULL; | |
4292 | p->arg.fh = NFS_FH(inode); | |
4293 | p->arg.fl = &p->fl; | |
4294 | p->arg.seqid = seqid; | |
c1d51931 | 4295 | p->res.seqid = seqid; |
911d1aaf TM |
4296 | p->arg.stateid = &lsp->ls_stateid; |
4297 | p->lsp = lsp; | |
4298 | atomic_inc(&lsp->ls_count); | |
4299 | /* Ensure we don't close file until we're done freeing locks! */ | |
4300 | p->ctx = get_nfs_open_context(ctx); | |
4301 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4302 | p->server = NFS_SERVER(inode); | |
4303 | return p; | |
4304 | } | |
4305 | ||
06f814a3 | 4306 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4307 | { |
963d8fe5 | 4308 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4309 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4310 | nfs4_put_lock_state(calldata->lsp); |
4311 | put_nfs_open_context(calldata->ctx); | |
4312 | kfree(calldata); | |
faf5f49c TM |
4313 | } |
4314 | ||
963d8fe5 | 4315 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4316 | { |
963d8fe5 | 4317 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4318 | |
14516c3a TM |
4319 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4320 | return; | |
faf5f49c TM |
4321 | switch (task->tk_status) { |
4322 | case 0: | |
f597c537 TM |
4323 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4324 | &calldata->res.stateid); | |
26e976a8 | 4325 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4326 | break; |
9e33bed5 TM |
4327 | case -NFS4ERR_BAD_STATEID: |
4328 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4329 | case -NFS4ERR_STALE_STATEID: |
4330 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4331 | break; |
4332 | default: | |
9e33bed5 | 4333 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4334 | rpc_restart_call_prepare(task); |
faf5f49c | 4335 | } |
faf5f49c TM |
4336 | } |
4337 | ||
4ce70ada | 4338 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4339 | { |
4ce70ada | 4340 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4341 | |
911d1aaf | 4342 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4343 | return; |
4344 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4345 | /* Note: exit _without_ running nfs4_locku_done */ |
4346 | task->tk_action = NULL; | |
faf5f49c TM |
4347 | return; |
4348 | } | |
26e976a8 | 4349 | calldata->timestamp = jiffies; |
035168ab | 4350 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4351 | &calldata->arg.seq_args, |
9d12b216 | 4352 | &calldata->res.seq_res, task)) |
a893693c | 4353 | return; |
5138fde0 | 4354 | rpc_call_start(task); |
faf5f49c TM |
4355 | } |
4356 | ||
963d8fe5 | 4357 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4358 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4359 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4360 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4361 | }; |
4362 | ||
a5d16a4d TM |
4363 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4364 | struct nfs_open_context *ctx, | |
4365 | struct nfs4_lock_state *lsp, | |
4366 | struct nfs_seqid *seqid) | |
4367 | { | |
4368 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4369 | struct rpc_message msg = { |
4370 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4371 | .rpc_cred = ctx->cred, | |
4372 | }; | |
c970aa85 TM |
4373 | struct rpc_task_setup task_setup_data = { |
4374 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4375 | .rpc_message = &msg, |
c970aa85 | 4376 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4377 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4378 | .flags = RPC_TASK_ASYNC, |
4379 | }; | |
a5d16a4d | 4380 | |
137d6aca FF |
4381 | /* Ensure this is an unlock - when canceling a lock, the |
4382 | * canceled lock is passed in, and it won't be an unlock. | |
4383 | */ | |
4384 | fl->fl_type = F_UNLCK; | |
4385 | ||
a5d16a4d TM |
4386 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4387 | if (data == NULL) { | |
4388 | nfs_free_seqid(seqid); | |
4389 | return ERR_PTR(-ENOMEM); | |
4390 | } | |
4391 | ||
9d12b216 | 4392 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4393 | msg.rpc_argp = &data->arg; |
4394 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4395 | task_setup_data.callback_data = data; |
4396 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4397 | } |
4398 | ||
faf5f49c TM |
4399 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4400 | { | |
19e03c57 | 4401 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4402 | struct nfs_seqid *seqid; |
1da177e4 | 4403 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4404 | struct rpc_task *task; |
4405 | int status = 0; | |
536ff0f8 | 4406 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4407 | |
8d0a8a9d | 4408 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4409 | /* Unlock _before_ we do the RPC call */ |
4410 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4411 | down_read(&nfsi->rwsem); |
4412 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4413 | up_read(&nfsi->rwsem); | |
9b073574 | 4414 | goto out; |
19e03c57 TM |
4415 | } |
4416 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4417 | if (status != 0) |
9b073574 TM |
4418 | goto out; |
4419 | /* Is this a delegated lock? */ | |
4420 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4421 | goto out; | |
8d0a8a9d | 4422 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4423 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4424 | status = -ENOMEM; |
911d1aaf | 4425 | if (seqid == NULL) |
9b073574 | 4426 | goto out; |
cd3758e3 | 4427 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4428 | status = PTR_ERR(task); |
4429 | if (IS_ERR(task)) | |
9b073574 | 4430 | goto out; |
a5d16a4d | 4431 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4432 | rpc_put_task(task); |
9b073574 | 4433 | out: |
536ff0f8 | 4434 | request->fl_flags = fl_flags; |
1da177e4 LT |
4435 | return status; |
4436 | } | |
4437 | ||
a5d16a4d TM |
4438 | struct nfs4_lockdata { |
4439 | struct nfs_lock_args arg; | |
4440 | struct nfs_lock_res res; | |
4441 | struct nfs4_lock_state *lsp; | |
4442 | struct nfs_open_context *ctx; | |
4443 | struct file_lock fl; | |
26e976a8 | 4444 | unsigned long timestamp; |
a5d16a4d TM |
4445 | int rpc_status; |
4446 | int cancelled; | |
66179efe | 4447 | struct nfs_server *server; |
a5d16a4d TM |
4448 | }; |
4449 | ||
4450 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4451 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4452 | gfp_t gfp_mask) | |
1da177e4 | 4453 | { |
a5d16a4d TM |
4454 | struct nfs4_lockdata *p; |
4455 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4456 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4457 | |
8535b2be | 4458 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4459 | if (p == NULL) |
4460 | return NULL; | |
4461 | ||
4462 | p->arg.fh = NFS_FH(inode); | |
4463 | p->arg.fl = &p->fl; | |
8535b2be | 4464 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4465 | if (p->arg.open_seqid == NULL) |
4466 | goto out_free; | |
8535b2be | 4467 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4468 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4469 | goto out_free_seqid; |
a5d16a4d | 4470 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4471 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4472 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4473 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4474 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4475 | p->lsp = lsp; |
66179efe | 4476 | p->server = server; |
a5d16a4d TM |
4477 | atomic_inc(&lsp->ls_count); |
4478 | p->ctx = get_nfs_open_context(ctx); | |
4479 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4480 | return p; | |
2f74c0a0 TM |
4481 | out_free_seqid: |
4482 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4483 | out_free: |
4484 | kfree(p); | |
4485 | return NULL; | |
4486 | } | |
4487 | ||
4488 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4489 | { | |
4490 | struct nfs4_lockdata *data = calldata; | |
4491 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4492 | |
3110ff80 | 4493 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4494 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4495 | return; | |
a5d16a4d TM |
4496 | /* Do we need to do an open_to_lock_owner? */ |
4497 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4498 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4499 | return; | |
a5d16a4d TM |
4500 | data->arg.open_stateid = &state->stateid; |
4501 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4502 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4503 | } else |
4504 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4505 | data->timestamp = jiffies; |
035168ab TM |
4506 | if (nfs4_setup_sequence(data->server, |
4507 | &data->arg.seq_args, | |
9d12b216 | 4508 | &data->res.seq_res, task)) |
66179efe | 4509 | return; |
5138fde0 | 4510 | rpc_call_start(task); |
3110ff80 | 4511 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4512 | } |
4513 | ||
b257957e AB |
4514 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4515 | { | |
4516 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4517 | nfs4_lock_prepare(task, calldata); | |
4518 | } | |
4519 | ||
a5d16a4d TM |
4520 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4521 | { | |
4522 | struct nfs4_lockdata *data = calldata; | |
4523 | ||
3110ff80 | 4524 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4525 | |
14516c3a TM |
4526 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4527 | return; | |
66179efe | 4528 | |
a5d16a4d | 4529 | data->rpc_status = task->tk_status; |
a5d16a4d | 4530 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4531 | if (data->rpc_status == 0) |
4532 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4533 | else | |
4534 | goto out; | |
4535 | } | |
4536 | if (data->rpc_status == 0) { | |
f597c537 | 4537 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
a5d16a4d | 4538 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; |
3d4ff43d | 4539 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4540 | } |
a5d16a4d | 4541 | out: |
3110ff80 | 4542 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4543 | } |
4544 | ||
4545 | static void nfs4_lock_release(void *calldata) | |
4546 | { | |
4547 | struct nfs4_lockdata *data = calldata; | |
4548 | ||
3110ff80 | 4549 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4550 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4551 | if (data->cancelled != 0) { |
4552 | struct rpc_task *task; | |
4553 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4554 | data->arg.lock_seqid); | |
4555 | if (!IS_ERR(task)) | |
bf294b41 | 4556 | rpc_put_task_async(task); |
3110ff80 | 4557 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4558 | } else |
4559 | nfs_free_seqid(data->arg.lock_seqid); | |
4560 | nfs4_put_lock_state(data->lsp); | |
4561 | put_nfs_open_context(data->ctx); | |
4562 | kfree(data); | |
3110ff80 | 4563 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4564 | } |
4565 | ||
4566 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4567 | .rpc_call_prepare = nfs4_lock_prepare, | |
4568 | .rpc_call_done = nfs4_lock_done, | |
4569 | .rpc_release = nfs4_lock_release, | |
4570 | }; | |
4571 | ||
b257957e AB |
4572 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4573 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4574 | .rpc_call_done = nfs4_lock_done, | |
4575 | .rpc_release = nfs4_lock_release, | |
4576 | }; | |
4577 | ||
2bee72a6 TM |
4578 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4579 | { | |
2bee72a6 TM |
4580 | switch (error) { |
4581 | case -NFS4ERR_ADMIN_REVOKED: | |
4582 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4583 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4584 | if (new_lock_owner != 0 || |
4585 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4586 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4587 | break; |
4588 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4589 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4590 | case -NFS4ERR_EXPIRED: |
4591 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4592 | }; |
4593 | } | |
4594 | ||
afe6c27c | 4595 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4596 | { |
4597 | struct nfs4_lockdata *data; | |
4598 | struct rpc_task *task; | |
5138fde0 TM |
4599 | struct rpc_message msg = { |
4600 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4601 | .rpc_cred = state->owner->so_cred, | |
4602 | }; | |
c970aa85 TM |
4603 | struct rpc_task_setup task_setup_data = { |
4604 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4605 | .rpc_message = &msg, |
c970aa85 | 4606 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4607 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4608 | .flags = RPC_TASK_ASYNC, |
4609 | }; | |
a5d16a4d TM |
4610 | int ret; |
4611 | ||
3110ff80 | 4612 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4613 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4614 | fl->fl_u.nfs4_fl.owner, |
4615 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4616 | if (data == NULL) |
4617 | return -ENOMEM; | |
4618 | if (IS_SETLKW(cmd)) | |
4619 | data->arg.block = 1; | |
b257957e AB |
4620 | if (recovery_type > NFS_LOCK_NEW) { |
4621 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4622 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4623 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4624 | } | |
9d12b216 | 4625 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4626 | msg.rpc_argp = &data->arg; |
4627 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4628 | task_setup_data.callback_data = data; |
4629 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4630 | if (IS_ERR(task)) |
a5d16a4d | 4631 | return PTR_ERR(task); |
a5d16a4d TM |
4632 | ret = nfs4_wait_for_completion_rpc_task(task); |
4633 | if (ret == 0) { | |
4634 | ret = data->rpc_status; | |
2bee72a6 TM |
4635 | if (ret) |
4636 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4637 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4638 | } else |
4639 | data->cancelled = 1; | |
e6b3c4db | 4640 | rpc_put_task(task); |
3110ff80 | 4641 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4642 | return ret; |
1da177e4 LT |
4643 | } |
4644 | ||
4645 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4646 | { | |
202b50dc | 4647 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4648 | struct nfs4_exception exception = { |
4649 | .inode = state->inode, | |
4650 | }; | |
202b50dc TM |
4651 | int err; |
4652 | ||
4653 | do { | |
42a2d13e TM |
4654 | /* Cache the lock if possible... */ |
4655 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4656 | return 0; | |
afe6c27c | 4657 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4658 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4659 | break; |
4660 | nfs4_handle_exception(server, err, &exception); | |
4661 | } while (exception.retry); | |
4662 | return err; | |
1da177e4 LT |
4663 | } |
4664 | ||
4665 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4666 | { | |
202b50dc | 4667 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4668 | struct nfs4_exception exception = { |
4669 | .inode = state->inode, | |
4670 | }; | |
202b50dc TM |
4671 | int err; |
4672 | ||
6bfc93ef TM |
4673 | err = nfs4_set_lock_state(state, request); |
4674 | if (err != 0) | |
4675 | return err; | |
202b50dc | 4676 | do { |
42a2d13e TM |
4677 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4678 | return 0; | |
afe6c27c | 4679 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4680 | switch (err) { |
4681 | default: | |
4682 | goto out; | |
4683 | case -NFS4ERR_GRACE: | |
4684 | case -NFS4ERR_DELAY: | |
4685 | nfs4_handle_exception(server, err, &exception); | |
4686 | err = 0; | |
4687 | } | |
202b50dc | 4688 | } while (exception.retry); |
a9ed2e25 | 4689 | out: |
202b50dc | 4690 | return err; |
1da177e4 LT |
4691 | } |
4692 | ||
f062eb6c | 4693 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 4694 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4695 | { |
b01dd1d8 BS |
4696 | int status, ret = NFS_OK; |
4697 | struct nfs4_lock_state *lsp; | |
f062eb6c BS |
4698 | struct nfs_server *server = NFS_SERVER(state->inode); |
4699 | ||
b01dd1d8 BS |
4700 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
4701 | if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { | |
4702 | status = nfs41_test_stateid(server, &lsp->ls_stateid); | |
4703 | if (status != NFS_OK) { | |
4704 | nfs41_free_stateid(server, &lsp->ls_stateid); | |
4705 | lsp->ls_flags &= ~NFS_LOCK_INITIALIZED; | |
4706 | ret = status; | |
4707 | } | |
4708 | } | |
4709 | }; | |
4710 | ||
4711 | return ret; | |
4712 | } | |
4713 | ||
4714 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4715 | { | |
4716 | int status = NFS_OK; | |
4717 | ||
4718 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4719 | status = nfs41_check_expired_locks(state); | |
f062eb6c | 4720 | if (status == NFS_OK) |
b01dd1d8 | 4721 | return status; |
f062eb6c BS |
4722 | return nfs4_lock_expired(state, request); |
4723 | } | |
4724 | #endif | |
4725 | ||
1da177e4 LT |
4726 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4727 | { | |
19e03c57 | 4728 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4729 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4730 | int status = -ENOLCK; |
1da177e4 | 4731 | |
8e469ebd TM |
4732 | if ((fl_flags & FL_POSIX) && |
4733 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4734 | goto out; | |
6bfc93ef | 4735 | /* Is this a delegated open? */ |
6bfc93ef TM |
4736 | status = nfs4_set_lock_state(state, request); |
4737 | if (status != 0) | |
4738 | goto out; | |
01c3b861 TM |
4739 | request->fl_flags |= FL_ACCESS; |
4740 | status = do_vfs_lock(request->fl_file, request); | |
4741 | if (status < 0) | |
4742 | goto out; | |
19e03c57 | 4743 | down_read(&nfsi->rwsem); |
01c3b861 | 4744 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4745 | /* Yes: cache locks! */ |
01c3b861 | 4746 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4747 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4748 | status = do_vfs_lock(request->fl_file, request); | |
4749 | goto out_unlock; | |
01c3b861 | 4750 | } |
afe6c27c | 4751 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4752 | if (status != 0) |
01c3b861 | 4753 | goto out_unlock; |
6bfc93ef | 4754 | /* Note: we always want to sleep here! */ |
01c3b861 | 4755 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4756 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4757 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4758 | "manager!\n", __func__); | |
01c3b861 | 4759 | out_unlock: |
19e03c57 | 4760 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4761 | out: |
4762 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4763 | return status; |
4764 | } | |
4765 | ||
4766 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4767 | { | |
a1d0b5ee TM |
4768 | struct nfs4_exception exception = { |
4769 | .state = state, | |
05ffe24f | 4770 | .inode = state->inode, |
a1d0b5ee | 4771 | }; |
1da177e4 LT |
4772 | int err; |
4773 | ||
4774 | do { | |
965b5d67 TM |
4775 | err = _nfs4_proc_setlk(state, cmd, request); |
4776 | if (err == -NFS4ERR_DENIED) | |
4777 | err = -EAGAIN; | |
1da177e4 | 4778 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4779 | err, &exception); |
1da177e4 LT |
4780 | } while (exception.retry); |
4781 | return err; | |
4782 | } | |
4783 | ||
4784 | static int | |
4785 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4786 | { | |
4787 | struct nfs_open_context *ctx; | |
4788 | struct nfs4_state *state; | |
4789 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4790 | int status; | |
4791 | ||
4792 | /* verify open state */ | |
cd3758e3 | 4793 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4794 | state = ctx->state; |
4795 | ||
4796 | if (request->fl_start < 0 || request->fl_end < 0) | |
4797 | return -EINVAL; | |
4798 | ||
d953126a TM |
4799 | if (IS_GETLK(cmd)) { |
4800 | if (state != NULL) | |
4801 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4802 | return 0; | |
4803 | } | |
1da177e4 LT |
4804 | |
4805 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4806 | return -EINVAL; | |
4807 | ||
d953126a TM |
4808 | if (request->fl_type == F_UNLCK) { |
4809 | if (state != NULL) | |
4810 | return nfs4_proc_unlck(state, cmd, request); | |
4811 | return 0; | |
4812 | } | |
1da177e4 | 4813 | |
d953126a TM |
4814 | if (state == NULL) |
4815 | return -ENOLCK; | |
55725513 TM |
4816 | /* |
4817 | * Don't rely on the VFS having checked the file open mode, | |
4818 | * since it won't do this for flock() locks. | |
4819 | */ | |
4820 | switch (request->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) { | |
4821 | case F_RDLCK: | |
4822 | if (!(filp->f_mode & FMODE_READ)) | |
4823 | return -EBADF; | |
4824 | break; | |
4825 | case F_WRLCK: | |
4826 | if (!(filp->f_mode & FMODE_WRITE)) | |
4827 | return -EBADF; | |
4828 | } | |
4829 | ||
1da177e4 LT |
4830 | do { |
4831 | status = nfs4_proc_setlk(state, cmd, request); | |
4832 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4833 | break; | |
4834 | timeout = nfs4_set_lock_task_retry(timeout); | |
4835 | status = -ERESTARTSYS; | |
4836 | if (signalled()) | |
4837 | break; | |
4838 | } while(status < 0); | |
1da177e4 LT |
4839 | return status; |
4840 | } | |
4841 | ||
888e694c TM |
4842 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4843 | { | |
4844 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4845 | struct nfs4_exception exception = { }; | |
4846 | int err; | |
4847 | ||
4848 | err = nfs4_set_lock_state(state, fl); | |
4849 | if (err != 0) | |
4850 | goto out; | |
4851 | do { | |
afe6c27c | 4852 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4853 | switch (err) { |
4854 | default: | |
a030889a WAA |
4855 | printk(KERN_ERR "NFS: %s: unhandled error " |
4856 | "%d.\n", __func__, err); | |
d5122201 | 4857 | case 0: |
965b5d67 | 4858 | case -ESTALE: |
d5122201 TM |
4859 | goto out; |
4860 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4861 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4862 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4863 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4864 | nfs4_schedule_lease_recovery(server->nfs_client); |
4865 | goto out; | |
74e7bb73 RL |
4866 | case -NFS4ERR_BADSESSION: |
4867 | case -NFS4ERR_BADSLOT: | |
4868 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4869 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4870 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 4871 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
d5122201 | 4872 | goto out; |
965b5d67 TM |
4873 | case -ERESTARTSYS: |
4874 | /* | |
4875 | * The show must go on: exit, but mark the | |
4876 | * stateid as needing recovery. | |
4877 | */ | |
a1d0b5ee | 4878 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
4879 | case -NFS4ERR_ADMIN_REVOKED: |
4880 | case -NFS4ERR_BAD_STATEID: | |
4881 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4882 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4883 | err = 0; |
4884 | goto out; | |
168667c4 TM |
4885 | case -EKEYEXPIRED: |
4886 | /* | |
4887 | * User RPCSEC_GSS context has expired. | |
4888 | * We cannot recover this stateid now, so | |
4889 | * skip it and allow recovery thread to | |
4890 | * proceed. | |
4891 | */ | |
4892 | err = 0; | |
4893 | goto out; | |
965b5d67 TM |
4894 | case -ENOMEM: |
4895 | case -NFS4ERR_DENIED: | |
4896 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4897 | err = 0; | |
4898 | goto out; | |
d5122201 TM |
4899 | case -NFS4ERR_DELAY: |
4900 | break; | |
4901 | } | |
888e694c TM |
4902 | err = nfs4_handle_exception(server, err, &exception); |
4903 | } while (exception.retry); | |
4904 | out: | |
4905 | return err; | |
4906 | } | |
6b3b5496 | 4907 | |
cf470c3e TM |
4908 | struct nfs_release_lockowner_data { |
4909 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 4910 | struct nfs_server *server; |
cf470c3e TM |
4911 | struct nfs_release_lockowner_args args; |
4912 | }; | |
4913 | ||
d3c7b7cc TM |
4914 | static void nfs4_release_lockowner_release(void *calldata) |
4915 | { | |
cf470c3e | 4916 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 4917 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
4918 | kfree(calldata); |
4919 | } | |
4920 | ||
17280175 | 4921 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
4922 | .rpc_release = nfs4_release_lockowner_release, |
4923 | }; | |
4924 | ||
cf470c3e | 4925 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
4926 | { |
4927 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 4928 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
4929 | struct rpc_message msg = { |
4930 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4931 | }; | |
4932 | ||
4933 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
4934 | return -EINVAL; |
4935 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
4936 | if (!data) | |
4937 | return -ENOMEM; | |
4938 | data->lsp = lsp; | |
5ae67c4f | 4939 | data->server = server; |
cf470c3e TM |
4940 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
4941 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
4942 | data->args.lock_owner.s_dev = server->s_dev; | |
4943 | msg.rpc_argp = &data->args; | |
4944 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
4945 | return 0; | |
d3c7b7cc TM |
4946 | } |
4947 | ||
aa1870af BF |
4948 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4949 | ||
64c2ce8b AK |
4950 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4951 | const void *buf, size_t buflen, | |
4952 | int flags, int type) | |
6b3b5496 | 4953 | { |
64c2ce8b AK |
4954 | if (strcmp(key, "") != 0) |
4955 | return -EINVAL; | |
4b580ee3 | 4956 | |
64c2ce8b | 4957 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4958 | } |
4959 | ||
64c2ce8b AK |
4960 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4961 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4962 | { |
64c2ce8b AK |
4963 | if (strcmp(key, "") != 0) |
4964 | return -EINVAL; | |
aa1870af | 4965 | |
64c2ce8b | 4966 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4967 | } |
4968 | ||
64c2ce8b AK |
4969 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4970 | size_t list_len, const char *name, | |
4971 | size_t name_len, int type) | |
6b3b5496 | 4972 | { |
64c2ce8b | 4973 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4974 | |
096455a2 BF |
4975 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4976 | return 0; | |
64c2ce8b AK |
4977 | |
4978 | if (list && len <= list_len) | |
4979 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4980 | return len; |
6b3b5496 BF |
4981 | } |
4982 | ||
533eb461 AA |
4983 | /* |
4984 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4985 | */ | |
69aaaae1 TM |
4986 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4987 | { | |
533eb461 AA |
4988 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4989 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4990 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 4991 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
4992 | return; |
4993 | ||
4994 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 4995 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
4996 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
4997 | fattr->nlink = 2; | |
4998 | } | |
4999 | ||
f05d147f BS |
5000 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5001 | const struct qstr *name, | |
5002 | struct nfs4_fs_locations *fs_locations, | |
5003 | struct page *page) | |
683b57b4 TM |
5004 | { |
5005 | struct nfs_server *server = NFS_SERVER(dir); | |
5006 | u32 bitmask[2] = { | |
361e624f | 5007 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5008 | }; |
5009 | struct nfs4_fs_locations_arg args = { | |
5010 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5011 | .name = name, |
683b57b4 TM |
5012 | .page = page, |
5013 | .bitmask = bitmask, | |
5014 | }; | |
22958463 BH |
5015 | struct nfs4_fs_locations_res res = { |
5016 | .fs_locations = fs_locations, | |
5017 | }; | |
683b57b4 TM |
5018 | struct rpc_message msg = { |
5019 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5020 | .rpc_argp = &args, | |
22958463 | 5021 | .rpc_resp = &res, |
683b57b4 TM |
5022 | }; |
5023 | int status; | |
5024 | ||
3110ff80 | 5025 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5026 | |
5027 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5028 | * is not supported */ | |
5029 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5030 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5031 | else | |
5032 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5033 | ||
c228fd3a | 5034 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5035 | fs_locations->server = server; |
830b8e33 | 5036 | fs_locations->nlocations = 0; |
f05d147f | 5037 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5038 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5039 | return status; |
5040 | } | |
5041 | ||
f05d147f BS |
5042 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5043 | const struct qstr *name, | |
5044 | struct nfs4_fs_locations *fs_locations, | |
5045 | struct page *page) | |
db0a9593 BS |
5046 | { |
5047 | struct nfs4_exception exception = { }; | |
5048 | int err; | |
5049 | do { | |
5050 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5051 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5052 | &exception); |
5053 | } while (exception.retry); | |
5054 | return err; | |
5055 | } | |
5056 | ||
5a5ea0d4 BS |
5057 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5058 | { | |
5059 | int status; | |
5060 | struct nfs4_secinfo_arg args = { | |
5061 | .dir_fh = NFS_FH(dir), | |
5062 | .name = name, | |
5063 | }; | |
5064 | struct nfs4_secinfo_res res = { | |
5065 | .flavors = flavors, | |
5066 | }; | |
5067 | struct rpc_message msg = { | |
5068 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5069 | .rpc_argp = &args, | |
5070 | .rpc_resp = &res, | |
5071 | }; | |
5072 | ||
5073 | dprintk("NFS call secinfo %s\n", name->name); | |
5074 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5075 | dprintk("NFS reply secinfo: %d\n", status); | |
5076 | return status; | |
5077 | } | |
5078 | ||
72de53ec BS |
5079 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5080 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5081 | { |
5082 | struct nfs4_exception exception = { }; | |
5083 | int err; | |
5084 | do { | |
5085 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5086 | _nfs4_proc_secinfo(dir, name, flavors), | |
5087 | &exception); | |
5088 | } while (exception.retry); | |
5089 | return err; | |
5090 | } | |
5091 | ||
557134a3 | 5092 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5093 | /* |
5094 | * Check the exchange flags returned by the server for invalid flags, having | |
5095 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5096 | * DS flags set. | |
5097 | */ | |
5098 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5099 | { | |
5100 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5101 | goto out_inval; | |
5102 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5103 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5104 | goto out_inval; | |
5105 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5106 | goto out_inval; | |
5107 | return NFS_OK; | |
5108 | out_inval: | |
5109 | return -NFS4ERR_INVAL; | |
5110 | } | |
5111 | ||
78fe0f41 | 5112 | static bool |
79d4e1f0 CL |
5113 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5114 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5115 | { |
5116 | if (a->server_scope_sz == b->server_scope_sz && | |
5117 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5118 | return true; | |
5119 | ||
5120 | return false; | |
5121 | } | |
5122 | ||
7c44f1ae WAA |
5123 | /* |
5124 | * nfs4_proc_bind_conn_to_session() | |
5125 | * | |
5126 | * The 4.1 client currently uses the same TCP connection for the | |
5127 | * fore and backchannel. | |
5128 | */ | |
2cf047c9 | 5129 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5130 | { |
5131 | int status; | |
5132 | struct nfs41_bind_conn_to_session_res res; | |
5133 | struct rpc_message msg = { | |
5134 | .rpc_proc = | |
5135 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5136 | .rpc_argp = clp, | |
5137 | .rpc_resp = &res, | |
2cf047c9 | 5138 | .rpc_cred = cred, |
7c44f1ae WAA |
5139 | }; |
5140 | ||
5141 | dprintk("--> %s\n", __func__); | |
5142 | BUG_ON(clp == NULL); | |
5143 | ||
5144 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5145 | if (unlikely(res.session == NULL)) { | |
5146 | status = -ENOMEM; | |
5147 | goto out; | |
5148 | } | |
5149 | ||
5150 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5151 | if (status == 0) { | |
5152 | if (memcmp(res.session->sess_id.data, | |
5153 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5154 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5155 | status = -EIO; | |
5156 | goto out_session; | |
5157 | } | |
5158 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5159 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5160 | __func__); | |
5161 | status = -EIO; | |
5162 | goto out_session; | |
5163 | } | |
5164 | if (res.use_conn_in_rdma_mode) { | |
5165 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5166 | __func__); | |
5167 | status = -EIO; | |
5168 | goto out_session; | |
5169 | } | |
5170 | } | |
5171 | out_session: | |
5172 | kfree(res.session); | |
5173 | out: | |
5174 | dprintk("<-- %s status= %d\n", __func__, status); | |
5175 | return status; | |
5176 | } | |
5177 | ||
99fe60d0 BH |
5178 | /* |
5179 | * nfs4_proc_exchange_id() | |
5180 | * | |
5181 | * Since the clientid has expired, all compounds using sessions | |
5182 | * associated with the stale clientid will be returning | |
5183 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5184 | * be in some phase of session reset. | |
5185 | */ | |
4d643d1d | 5186 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5187 | { |
5188 | nfs4_verifier verifier; | |
5189 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5190 | .verifier = &verifier, |
99fe60d0 | 5191 | .client = clp, |
357f54d6 | 5192 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5193 | }; |
5194 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5195 | 0 |
99fe60d0 BH |
5196 | }; |
5197 | int status; | |
5198 | struct rpc_message msg = { | |
5199 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5200 | .rpc_argp = &args, | |
5201 | .rpc_resp = &res, | |
5202 | .rpc_cred = cred, | |
5203 | }; | |
99fe60d0 BH |
5204 | |
5205 | dprintk("--> %s\n", __func__); | |
5206 | BUG_ON(clp == NULL); | |
a7b72103 | 5207 | |
f092075d | 5208 | nfs4_init_boot_verifier(clp, &verifier); |
99fe60d0 | 5209 | |
c7a360b0 | 5210 | args.id_len = scnprintf(args.id, sizeof(args.id), |
3617e503 | 5211 | "%s/%s/%u", |
c7a360b0 | 5212 | clp->cl_ipaddr, |
3617e503 | 5213 | clp->cl_rpcclient->cl_nodename, |
c7a360b0 | 5214 | clp->cl_rpcclient->cl_auth->au_flavor); |
99fe60d0 | 5215 | |
acdeb69d | 5216 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5217 | GFP_NOFS); |
acdeb69d | 5218 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5219 | status = -ENOMEM; |
5220 | goto out; | |
5221 | } | |
78fe0f41 | 5222 | |
79d4e1f0 | 5223 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5224 | GFP_NOFS); |
177313f1 | 5225 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5226 | status = -ENOMEM; |
acdeb69d | 5227 | goto out_server_owner; |
abe9a6d5 | 5228 | } |
78fe0f41 | 5229 | |
bbafffd2 | 5230 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5231 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5232 | status = -ENOMEM; |
5233 | goto out_server_scope; | |
5234 | } | |
5235 | ||
1bd714f2 | 5236 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5237 | if (status == 0) |
32b01310 | 5238 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5239 | |
acdeb69d | 5240 | if (status == 0) { |
32b01310 TM |
5241 | clp->cl_clientid = res.clientid; |
5242 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5243 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5244 | clp->cl_seqid = res.seqid; | |
5245 | ||
acdeb69d CL |
5246 | kfree(clp->cl_serverowner); |
5247 | clp->cl_serverowner = res.server_owner; | |
5248 | res.server_owner = NULL; | |
78fe0f41 | 5249 | |
7d2ed9ac | 5250 | /* use the most recent implementation id */ |
59155546 CL |
5251 | kfree(clp->cl_implid); |
5252 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5253 | |
177313f1 | 5254 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5255 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5256 | res.server_scope)) { |
5257 | dprintk("%s: server_scope mismatch detected\n", | |
5258 | __func__); | |
5259 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5260 | kfree(clp->cl_serverscope); |
5261 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5262 | } |
5263 | ||
177313f1 | 5264 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5265 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5266 | goto out; |
5267 | } | |
32b01310 TM |
5268 | } else |
5269 | kfree(res.impl_id); | |
7d2ed9ac | 5270 | |
acdeb69d CL |
5271 | out_server_owner: |
5272 | kfree(res.server_owner); | |
7d2ed9ac | 5273 | out_server_scope: |
abe9a6d5 WAA |
5274 | kfree(res.server_scope); |
5275 | out: | |
177313f1 | 5276 | if (clp->cl_implid != NULL) |
7d2ed9ac WAA |
5277 | dprintk("%s: Server Implementation ID: " |
5278 | "domain: %s, name: %s, date: %llu,%u\n", | |
59155546 CL |
5279 | __func__, clp->cl_implid->domain, clp->cl_implid->name, |
5280 | clp->cl_implid->date.seconds, | |
5281 | clp->cl_implid->date.nseconds); | |
99fe60d0 BH |
5282 | dprintk("<-- %s status= %d\n", __func__, status); |
5283 | return status; | |
5284 | } | |
5285 | ||
66245539 TM |
5286 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5287 | struct rpc_cred *cred) | |
5288 | { | |
5289 | struct rpc_message msg = { | |
5290 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5291 | .rpc_argp = clp, | |
5292 | .rpc_cred = cred, | |
5293 | }; | |
5294 | int status; | |
5295 | ||
5296 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5297 | if (status) | |
5298 | pr_warn("NFS: Got error %d from the server %s on " | |
5299 | "DESTROY_CLIENTID.", status, clp->cl_hostname); | |
5300 | return status; | |
5301 | } | |
5302 | ||
5303 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5304 | struct rpc_cred *cred) | |
5305 | { | |
5306 | unsigned int loop; | |
5307 | int ret; | |
5308 | ||
5309 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5310 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5311 | switch (ret) { | |
5312 | case -NFS4ERR_DELAY: | |
5313 | case -NFS4ERR_CLIENTID_BUSY: | |
5314 | ssleep(1); | |
5315 | break; | |
5316 | default: | |
5317 | return ret; | |
5318 | } | |
5319 | } | |
5320 | return 0; | |
5321 | } | |
5322 | ||
5323 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5324 | { | |
5325 | struct rpc_cred *cred; | |
5326 | int ret = 0; | |
5327 | ||
5328 | if (clp->cl_mvops->minor_version < 1) | |
5329 | goto out; | |
5330 | if (clp->cl_exchange_flags == 0) | |
5331 | goto out; | |
5332 | cred = nfs4_get_exchange_id_cred(clp); | |
5333 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5334 | if (cred) | |
5335 | put_rpccred(cred); | |
5336 | switch (ret) { | |
5337 | case 0: | |
5338 | case -NFS4ERR_STALE_CLIENTID: | |
5339 | clp->cl_exchange_flags = 0; | |
5340 | } | |
5341 | out: | |
5342 | return ret; | |
5343 | } | |
5344 | ||
2050f0cc AA |
5345 | struct nfs4_get_lease_time_data { |
5346 | struct nfs4_get_lease_time_args *args; | |
5347 | struct nfs4_get_lease_time_res *res; | |
5348 | struct nfs_client *clp; | |
5349 | }; | |
5350 | ||
5351 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5352 | void *calldata) | |
5353 | { | |
5354 | int ret; | |
5355 | struct nfs4_get_lease_time_data *data = | |
5356 | (struct nfs4_get_lease_time_data *)calldata; | |
5357 | ||
5358 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5359 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5360 | /* just setup sequence, do not trigger session recovery |
5361 | since we're invoked within one */ | |
5362 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5363 | &data->args->la_seq_args, |
9d12b216 | 5364 | &data->res->lr_seq_res, task); |
2050f0cc AA |
5365 | |
5366 | BUG_ON(ret == -EAGAIN); | |
5367 | rpc_call_start(task); | |
5368 | dprintk("<-- %s\n", __func__); | |
5369 | } | |
5370 | ||
5371 | /* | |
5372 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5373 | * from sequence operation or clientid errors. | |
5374 | */ | |
5375 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5376 | { | |
5377 | struct nfs4_get_lease_time_data *data = | |
5378 | (struct nfs4_get_lease_time_data *)calldata; | |
5379 | ||
5380 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5381 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5382 | return; | |
2050f0cc AA |
5383 | switch (task->tk_status) { |
5384 | case -NFS4ERR_DELAY: | |
5385 | case -NFS4ERR_GRACE: | |
5386 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5387 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5388 | task->tk_status = 0; | |
a8a4ae3a AA |
5389 | /* fall through */ |
5390 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5391 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5392 | return; |
5393 | } | |
2050f0cc AA |
5394 | dprintk("<-- %s\n", __func__); |
5395 | } | |
5396 | ||
17280175 | 5397 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5398 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5399 | .rpc_call_done = nfs4_get_lease_time_done, | |
5400 | }; | |
5401 | ||
5402 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5403 | { | |
5404 | struct rpc_task *task; | |
5405 | struct nfs4_get_lease_time_args args; | |
5406 | struct nfs4_get_lease_time_res res = { | |
5407 | .lr_fsinfo = fsinfo, | |
5408 | }; | |
5409 | struct nfs4_get_lease_time_data data = { | |
5410 | .args = &args, | |
5411 | .res = &res, | |
5412 | .clp = clp, | |
5413 | }; | |
5414 | struct rpc_message msg = { | |
5415 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5416 | .rpc_argp = &args, | |
5417 | .rpc_resp = &res, | |
5418 | }; | |
5419 | struct rpc_task_setup task_setup = { | |
5420 | .rpc_client = clp->cl_rpcclient, | |
5421 | .rpc_message = &msg, | |
5422 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5423 | .callback_data = &data, |
5424 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5425 | }; |
5426 | int status; | |
5427 | ||
9d12b216 | 5428 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5429 | dprintk("--> %s\n", __func__); |
5430 | task = rpc_run_task(&task_setup); | |
5431 | ||
5432 | if (IS_ERR(task)) | |
5433 | status = PTR_ERR(task); | |
5434 | else { | |
5435 | status = task->tk_status; | |
5436 | rpc_put_task(task); | |
5437 | } | |
5438 | dprintk("<-- %s return %d\n", __func__, status); | |
5439 | ||
5440 | return status; | |
5441 | } | |
5442 | ||
f86f36a6 TM |
5443 | static struct nfs4_slot *nfs4_alloc_slots(u32 max_slots, gfp_t gfp_flags) |
5444 | { | |
5445 | return kcalloc(max_slots, sizeof(struct nfs4_slot), gfp_flags); | |
5446 | } | |
5447 | ||
5448 | static void nfs4_add_and_init_slots(struct nfs4_slot_table *tbl, | |
5449 | struct nfs4_slot *new, | |
5450 | u32 max_slots, | |
5451 | u32 ivalue) | |
5452 | { | |
5453 | struct nfs4_slot *old = NULL; | |
5454 | u32 i; | |
5455 | ||
5456 | spin_lock(&tbl->slot_tbl_lock); | |
5457 | if (new) { | |
5458 | old = tbl->slots; | |
5459 | tbl->slots = new; | |
5460 | tbl->max_slots = max_slots; | |
5461 | } | |
5462 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5463 | for (i = 0; i < tbl->max_slots; i++) | |
5464 | tbl->slots[i].seq_nr = ivalue; | |
5465 | spin_unlock(&tbl->slot_tbl_lock); | |
5466 | kfree(old); | |
5467 | } | |
5468 | ||
b73dafa7 | 5469 | /* |
f86f36a6 | 5470 | * (re)Initialise a slot table |
b73dafa7 | 5471 | */ |
f86f36a6 TM |
5472 | static int nfs4_realloc_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5473 | u32 ivalue) | |
ac72b7b3 | 5474 | { |
104aeba4 | 5475 | struct nfs4_slot *new = NULL; |
f86f36a6 | 5476 | int ret = -ENOMEM; |
ac72b7b3 | 5477 | |
104aeba4 AA |
5478 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5479 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5480 | |
104aeba4 AA |
5481 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5482 | if (max_reqs != tbl->max_slots) { | |
f86f36a6 | 5483 | new = nfs4_alloc_slots(max_reqs, GFP_NOFS); |
104aeba4 AA |
5484 | if (!new) |
5485 | goto out; | |
104aeba4 | 5486 | } |
f86f36a6 TM |
5487 | ret = 0; |
5488 | ||
5489 | nfs4_add_and_init_slots(tbl, new, max_reqs, ivalue); | |
ac72b7b3 AA |
5490 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, |
5491 | tbl, tbl->slots, tbl->max_slots); | |
5492 | out: | |
5493 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5494 | return ret; | |
5495 | } | |
5496 | ||
f8625a6a RL |
5497 | /* Destroy the slot table */ |
5498 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5499 | { | |
5500 | if (session->fc_slot_table.slots != NULL) { | |
5501 | kfree(session->fc_slot_table.slots); | |
5502 | session->fc_slot_table.slots = NULL; | |
5503 | } | |
5504 | if (session->bc_slot_table.slots != NULL) { | |
5505 | kfree(session->bc_slot_table.slots); | |
5506 | session->bc_slot_table.slots = NULL; | |
5507 | } | |
5508 | return; | |
5509 | } | |
5510 | ||
050047ce | 5511 | /* |
aacd5537 | 5512 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5513 | */ |
aacd5537 | 5514 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5515 | { |
f26468fb | 5516 | struct nfs4_slot_table *tbl; |
aacd5537 | 5517 | int status; |
050047ce | 5518 | |
aacd5537 AA |
5519 | dprintk("--> %s\n", __func__); |
5520 | /* Fore channel */ | |
5521 | tbl = &ses->fc_slot_table; | |
f86f36a6 TM |
5522 | status = nfs4_realloc_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5523 | if (status) /* -ENOMEM */ | |
5524 | return status; | |
aacd5537 AA |
5525 | /* Back channel */ |
5526 | tbl = &ses->bc_slot_table; | |
f86f36a6 TM |
5527 | status = nfs4_realloc_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
5528 | if (status && tbl->slots == NULL) | |
5529 | /* Fore and back channel share a connection so get | |
5530 | * both slot tables or neither */ | |
5531 | nfs4_destroy_slot_tables(ses); | |
f8625a6a | 5532 | return status; |
557134a3 AA |
5533 | } |
5534 | ||
5535 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5536 | { | |
5537 | struct nfs4_session *session; | |
5538 | struct nfs4_slot_table *tbl; | |
5539 | ||
8535b2be | 5540 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5541 | if (!session) |
5542 | return NULL; | |
76db6d95 | 5543 | |
557134a3 | 5544 | tbl = &session->fc_slot_table; |
45d43c29 | 5545 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5546 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5547 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5548 | init_completion(&tbl->complete); |
f8625a6a RL |
5549 | |
5550 | tbl = &session->bc_slot_table; | |
45d43c29 | 5551 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5552 | spin_lock_init(&tbl->slot_tbl_lock); |
5553 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5554 | init_completion(&tbl->complete); |
f8625a6a | 5555 | |
1055d76d TM |
5556 | session->session_state = 1<<NFS4_SESSION_INITING; |
5557 | ||
557134a3 AA |
5558 | session->clp = clp; |
5559 | return session; | |
5560 | } | |
5561 | ||
5562 | void nfs4_destroy_session(struct nfs4_session *session) | |
5563 | { | |
2446ab60 | 5564 | struct rpc_xprt *xprt; |
848f5bda | 5565 | struct rpc_cred *cred; |
2446ab60 | 5566 | |
848f5bda TM |
5567 | cred = nfs4_get_exchange_id_cred(session->clp); |
5568 | nfs4_proc_destroy_session(session, cred); | |
5569 | if (cred) | |
5570 | put_rpccred(cred); | |
2446ab60 TM |
5571 | |
5572 | rcu_read_lock(); | |
5573 | xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); | |
5574 | rcu_read_unlock(); | |
5a0ffe54 | 5575 | dprintk("%s Destroy backchannel for xprt %p\n", |
2446ab60 TM |
5576 | __func__, xprt); |
5577 | xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5578 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5579 | kfree(session); |
5580 | } | |
5581 | ||
fc931582 AA |
5582 | /* |
5583 | * Initialize the values to be used by the client in CREATE_SESSION | |
5584 | * If nfs4_init_session set the fore channel request and response sizes, | |
5585 | * use them. | |
5586 | * | |
5587 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5588 | * always set csa_cachethis to FALSE because the current implementation | |
5589 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5590 | */ | |
5591 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5592 | { | |
5593 | struct nfs4_session *session = args->client->cl_session; | |
5594 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5595 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5596 | ||
5597 | if (mxrqst_sz == 0) | |
5598 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5599 | if (mxresp_sz == 0) | |
5600 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5601 | /* Fore channel attributes */ | |
fc931582 AA |
5602 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5603 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5604 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5605 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5606 | |
5607 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5608 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5609 | __func__, |
5610 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5611 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5612 | |
5613 | /* Back channel attributes */ | |
fc931582 AA |
5614 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5615 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5616 | args->bc_attrs.max_resp_sz_cached = 0; | |
5617 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5618 | args->bc_attrs.max_reqs = 1; | |
5619 | ||
5620 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5621 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5622 | __func__, | |
5623 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5624 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5625 | args->bc_attrs.max_reqs); | |
5626 | } | |
5627 | ||
43c2e885 | 5628 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5629 | { |
43c2e885 BF |
5630 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5631 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5632 | ||
43c2e885 BF |
5633 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5634 | return -EINVAL; | |
5635 | /* | |
5636 | * Our requested max_ops is the minimum we need; we're not | |
5637 | * prepared to break up compounds into smaller pieces than that. | |
5638 | * So, no point even trying to continue if the server won't | |
5639 | * cooperate: | |
5640 | */ | |
5641 | if (rcvd->max_ops < sent->max_ops) | |
5642 | return -EINVAL; | |
5643 | if (rcvd->max_reqs == 0) | |
5644 | return -EINVAL; | |
b4b9a0c1 VG |
5645 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5646 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5647 | return 0; |
8d35301d AA |
5648 | } |
5649 | ||
43c2e885 BF |
5650 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5651 | { | |
5652 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5653 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5654 | |
43c2e885 BF |
5655 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5656 | return -EINVAL; | |
5657 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5658 | return -EINVAL; | |
5659 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5660 | return -EINVAL; | |
5661 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5662 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5663 | return -EINVAL; |
b4b9a0c1 | 5664 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5665 | return -EINVAL; |
5666 | return 0; | |
5667 | } | |
8d35301d | 5668 | |
8d35301d AA |
5669 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5670 | struct nfs4_session *session) | |
5671 | { | |
43c2e885 | 5672 | int ret; |
8d35301d | 5673 | |
43c2e885 BF |
5674 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5675 | if (ret) | |
5676 | return ret; | |
5677 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5678 | } |
5679 | ||
848f5bda TM |
5680 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5681 | struct rpc_cred *cred) | |
fc931582 AA |
5682 | { |
5683 | struct nfs4_session *session = clp->cl_session; | |
5684 | struct nfs41_create_session_args args = { | |
5685 | .client = clp, | |
5686 | .cb_program = NFS4_CALLBACK, | |
5687 | }; | |
5688 | struct nfs41_create_session_res res = { | |
5689 | .client = clp, | |
5690 | }; | |
5691 | struct rpc_message msg = { | |
5692 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5693 | .rpc_argp = &args, | |
5694 | .rpc_resp = &res, | |
848f5bda | 5695 | .rpc_cred = cred, |
fc931582 AA |
5696 | }; |
5697 | int status; | |
5698 | ||
5699 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5700 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5701 | |
1bd714f2 | 5702 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5703 | |
8d35301d AA |
5704 | if (!status) |
5705 | /* Verify the session's negotiated channel_attrs values */ | |
5706 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5707 | if (!status) { |
5708 | /* Increment the clientid slot sequence id */ | |
5709 | clp->cl_seqid++; | |
5710 | } | |
5711 | ||
5712 | return status; | |
5713 | } | |
5714 | ||
5715 | /* | |
5716 | * Issues a CREATE_SESSION operation to the server. | |
5717 | * It is the responsibility of the caller to verify the session is | |
5718 | * expired before calling this routine. | |
5719 | */ | |
848f5bda | 5720 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5721 | { |
5722 | int status; | |
5723 | unsigned *ptr; | |
fc931582 AA |
5724 | struct nfs4_session *session = clp->cl_session; |
5725 | ||
5726 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5727 | ||
848f5bda | 5728 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5729 | if (status) |
5730 | goto out; | |
5731 | ||
aacd5537 AA |
5732 | /* Init or reset the session slot tables */ |
5733 | status = nfs4_setup_session_slot_tables(session); | |
5734 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5735 | if (status) |
5736 | goto out; | |
5737 | ||
5738 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5739 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5740 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5741 | out: |
5742 | dprintk("<-- %s\n", __func__); | |
5743 | return status; | |
5744 | } | |
5745 | ||
0f3e66c6 AA |
5746 | /* |
5747 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5748 | * The caller must serialize access to this routine. | |
5749 | */ | |
848f5bda TM |
5750 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5751 | struct rpc_cred *cred) | |
0f3e66c6 | 5752 | { |
848f5bda TM |
5753 | struct rpc_message msg = { |
5754 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5755 | .rpc_argp = session, | |
5756 | .rpc_cred = cred, | |
5757 | }; | |
0f3e66c6 | 5758 | int status = 0; |
0f3e66c6 AA |
5759 | |
5760 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5761 | ||
5762 | /* session is still being setup */ | |
5763 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5764 | return status; | |
5765 | ||
1bd714f2 | 5766 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5767 | |
5768 | if (status) | |
08106ac7 | 5769 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5770 | "Session has been destroyed regardless...\n", status); |
5771 | ||
5772 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5773 | return status; | |
5774 | } | |
5775 | ||
7b38c368 TM |
5776 | /* |
5777 | * With sessions, the client is not marked ready until after a | |
5778 | * successful EXCHANGE_ID and CREATE_SESSION. | |
5779 | * | |
5780 | * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate | |
5781 | * other versions of NFS can be tried. | |
5782 | */ | |
5783 | static int nfs41_check_session_ready(struct nfs_client *clp) | |
5784 | { | |
5785 | int ret; | |
5786 | ||
5787 | if (clp->cl_cons_state == NFS_CS_SESSION_INITING) { | |
5788 | ret = nfs4_client_recover_expired_lease(clp); | |
5789 | if (ret) | |
5790 | return ret; | |
5791 | } | |
5792 | if (clp->cl_cons_state < NFS_CS_READY) | |
5793 | return -EPROTONOSUPPORT; | |
54ac471c | 5794 | smp_rmb(); |
7b38c368 TM |
5795 | return 0; |
5796 | } | |
5797 | ||
fccba804 TM |
5798 | int nfs4_init_session(struct nfs_server *server) |
5799 | { | |
5800 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5801 | struct nfs4_session *session; |
68bf05ef | 5802 | unsigned int rsize, wsize; |
fccba804 TM |
5803 | |
5804 | if (!nfs4_has_session(clp)) | |
5805 | return 0; | |
5806 | ||
1055d76d | 5807 | session = clp->cl_session; |
7b38c368 TM |
5808 | spin_lock(&clp->cl_lock); |
5809 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
1055d76d | 5810 | |
7b38c368 TM |
5811 | rsize = server->rsize; |
5812 | if (rsize == 0) | |
5813 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5814 | wsize = server->wsize; | |
5815 | if (wsize == 0) | |
5816 | wsize = NFS_MAX_FILE_IO_SIZE; | |
68bf05ef | 5817 | |
7b38c368 TM |
5818 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5819 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
5820 | } | |
5821 | spin_unlock(&clp->cl_lock); | |
2449ea2e | 5822 | |
7b38c368 | 5823 | return nfs41_check_session_ready(clp); |
fccba804 TM |
5824 | } |
5825 | ||
7b38c368 | 5826 | int nfs4_init_ds_session(struct nfs_client *clp, unsigned long lease_time) |
d83217c1 AA |
5827 | { |
5828 | struct nfs4_session *session = clp->cl_session; | |
5829 | int ret; | |
5830 | ||
7b38c368 TM |
5831 | spin_lock(&clp->cl_lock); |
5832 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
5833 | /* | |
5834 | * Do not set NFS_CS_CHECK_LEASE_TIME instead set the | |
5835 | * DS lease to be equal to the MDS lease. | |
5836 | */ | |
5837 | clp->cl_lease_time = lease_time; | |
5838 | clp->cl_last_renewal = jiffies; | |
5839 | } | |
5840 | spin_unlock(&clp->cl_lock); | |
d83217c1 | 5841 | |
7b38c368 TM |
5842 | ret = nfs41_check_session_ready(clp); |
5843 | if (ret) | |
5844 | return ret; | |
5845 | /* Test for the DS role */ | |
5846 | if (!is_ds_client(clp)) | |
5847 | return -ENODEV; | |
5848 | return 0; | |
d83217c1 AA |
5849 | } |
5850 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5851 | ||
5852 | ||
fc01cea9 AA |
5853 | /* |
5854 | * Renew the cl_session lease. | |
5855 | */ | |
d5f8d3fe TM |
5856 | struct nfs4_sequence_data { |
5857 | struct nfs_client *clp; | |
5858 | struct nfs4_sequence_args args; | |
5859 | struct nfs4_sequence_res res; | |
5860 | }; | |
5861 | ||
dc96aef9 AB |
5862 | static void nfs41_sequence_release(void *data) |
5863 | { | |
d5f8d3fe TM |
5864 | struct nfs4_sequence_data *calldata = data; |
5865 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5866 | |
7135840f AB |
5867 | if (atomic_read(&clp->cl_count) > 1) |
5868 | nfs4_schedule_state_renewal(clp); | |
5869 | nfs_put_client(clp); | |
d5f8d3fe | 5870 | kfree(calldata); |
dc96aef9 AB |
5871 | } |
5872 | ||
aa5190d0 TM |
5873 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5874 | { | |
5875 | switch(task->tk_status) { | |
5876 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5877 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5878 | return -EAGAIN; | |
5879 | default: | |
0400a6b0 | 5880 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5881 | } |
5882 | return 0; | |
5883 | } | |
5884 | ||
dc96aef9 | 5885 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5886 | { |
d5f8d3fe TM |
5887 | struct nfs4_sequence_data *calldata = data; |
5888 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5889 | |
14516c3a TM |
5890 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5891 | return; | |
fc01cea9 AA |
5892 | |
5893 | if (task->tk_status < 0) { | |
5894 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5895 | if (atomic_read(&clp->cl_count) == 1) |
5896 | goto out; | |
fc01cea9 | 5897 | |
aa5190d0 TM |
5898 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5899 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5900 | return; |
5901 | } | |
5902 | } | |
fc01cea9 | 5903 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5904 | out: |
fc01cea9 AA |
5905 | dprintk("<-- %s\n", __func__); |
5906 | } | |
5907 | ||
5908 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5909 | { | |
d5f8d3fe TM |
5910 | struct nfs4_sequence_data *calldata = data; |
5911 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5912 | struct nfs4_sequence_args *args; |
5913 | struct nfs4_sequence_res *res; | |
5914 | ||
fc01cea9 AA |
5915 | args = task->tk_msg.rpc_argp; |
5916 | res = task->tk_msg.rpc_resp; | |
5917 | ||
9d12b216 | 5918 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
5919 | return; |
5920 | rpc_call_start(task); | |
5921 | } | |
5922 | ||
5923 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5924 | .rpc_call_done = nfs41_sequence_call_done, | |
5925 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5926 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5927 | }; |
5928 | ||
71ac6da9 | 5929 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5930 | { |
d5f8d3fe | 5931 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5932 | struct rpc_message msg = { |
5933 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5934 | .rpc_cred = cred, | |
5935 | }; | |
71ac6da9 TM |
5936 | struct rpc_task_setup task_setup_data = { |
5937 | .rpc_client = clp->cl_rpcclient, | |
5938 | .rpc_message = &msg, | |
5939 | .callback_ops = &nfs41_sequence_ops, | |
5940 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5941 | }; | |
fc01cea9 | 5942 | |
7135840f | 5943 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5944 | return ERR_PTR(-EIO); |
dfb4f309 | 5945 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5946 | if (calldata == NULL) { |
7135840f | 5947 | nfs_put_client(clp); |
71ac6da9 | 5948 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5949 | } |
9d12b216 | 5950 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
5951 | msg.rpc_argp = &calldata->args; |
5952 | msg.rpc_resp = &calldata->res; | |
5953 | calldata->clp = clp; | |
71ac6da9 | 5954 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5955 | |
71ac6da9 TM |
5956 | return rpc_run_task(&task_setup_data); |
5957 | } | |
5958 | ||
2f60ea6b | 5959 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5960 | { |
5961 | struct rpc_task *task; | |
5962 | int ret = 0; | |
5963 | ||
2f60ea6b TM |
5964 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5965 | return 0; | |
71ac6da9 TM |
5966 | task = _nfs41_proc_sequence(clp, cred); |
5967 | if (IS_ERR(task)) | |
5968 | ret = PTR_ERR(task); | |
5969 | else | |
bf294b41 | 5970 | rpc_put_task_async(task); |
71ac6da9 TM |
5971 | dprintk("<-- %s status=%d\n", __func__, ret); |
5972 | return ret; | |
5973 | } | |
5974 | ||
5975 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5976 | { | |
5977 | struct rpc_task *task; | |
5978 | int ret; | |
5979 | ||
5980 | task = _nfs41_proc_sequence(clp, cred); | |
5981 | if (IS_ERR(task)) { | |
5982 | ret = PTR_ERR(task); | |
5983 | goto out; | |
5984 | } | |
5985 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5986 | if (!ret) { |
5987 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5988 | ||
5989 | if (task->tk_status == 0) | |
5990 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5991 | ret = task->tk_status; |
b4410c2f | 5992 | } |
71ac6da9 TM |
5993 | rpc_put_task(task); |
5994 | out: | |
5995 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5996 | return ret; | |
fc01cea9 AA |
5997 | } |
5998 | ||
fce5c838 RL |
5999 | struct nfs4_reclaim_complete_data { |
6000 | struct nfs_client *clp; | |
6001 | struct nfs41_reclaim_complete_args arg; | |
6002 | struct nfs41_reclaim_complete_res res; | |
6003 | }; | |
6004 | ||
6005 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6006 | { | |
6007 | struct nfs4_reclaim_complete_data *calldata = data; | |
6008 | ||
b257957e | 6009 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
6010 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
6011 | &calldata->arg.seq_args, | |
9d12b216 | 6012 | &calldata->res.seq_res, task)) |
fce5c838 RL |
6013 | return; |
6014 | ||
6015 | rpc_call_start(task); | |
6016 | } | |
6017 | ||
aa5190d0 TM |
6018 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6019 | { | |
6020 | switch(task->tk_status) { | |
6021 | case 0: | |
6022 | case -NFS4ERR_COMPLETE_ALREADY: | |
6023 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6024 | break; | |
6025 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6026 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6027 | /* fall through */ |
6028 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6029 | return -EAGAIN; |
6030 | default: | |
0400a6b0 | 6031 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6032 | } |
6033 | return 0; | |
6034 | } | |
6035 | ||
fce5c838 RL |
6036 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6037 | { | |
6038 | struct nfs4_reclaim_complete_data *calldata = data; | |
6039 | struct nfs_client *clp = calldata->clp; | |
6040 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6041 | ||
6042 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6043 | if (!nfs41_sequence_done(task, res)) |
6044 | return; | |
fce5c838 | 6045 | |
aa5190d0 TM |
6046 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6047 | rpc_restart_call_prepare(task); | |
6048 | return; | |
6049 | } | |
fce5c838 RL |
6050 | dprintk("<-- %s\n", __func__); |
6051 | } | |
6052 | ||
6053 | static void nfs4_free_reclaim_complete_data(void *data) | |
6054 | { | |
6055 | struct nfs4_reclaim_complete_data *calldata = data; | |
6056 | ||
6057 | kfree(calldata); | |
6058 | } | |
6059 | ||
6060 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6061 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6062 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6063 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6064 | }; | |
6065 | ||
6066 | /* | |
6067 | * Issue a global reclaim complete. | |
6068 | */ | |
6069 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
6070 | { | |
6071 | struct nfs4_reclaim_complete_data *calldata; | |
6072 | struct rpc_task *task; | |
6073 | struct rpc_message msg = { | |
6074 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
6075 | }; | |
6076 | struct rpc_task_setup task_setup_data = { | |
6077 | .rpc_client = clp->cl_rpcclient, | |
6078 | .rpc_message = &msg, | |
6079 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6080 | .flags = RPC_TASK_ASYNC, | |
6081 | }; | |
6082 | int status = -ENOMEM; | |
6083 | ||
6084 | dprintk("--> %s\n", __func__); | |
8535b2be | 6085 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6086 | if (calldata == NULL) |
6087 | goto out; | |
6088 | calldata->clp = clp; | |
6089 | calldata->arg.one_fs = 0; | |
fce5c838 | 6090 | |
9d12b216 | 6091 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
6092 | msg.rpc_argp = &calldata->arg; |
6093 | msg.rpc_resp = &calldata->res; | |
6094 | task_setup_data.callback_data = calldata; | |
6095 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6096 | if (IS_ERR(task)) { |
fce5c838 | 6097 | status = PTR_ERR(task); |
acf82b85 DC |
6098 | goto out; |
6099 | } | |
c34c32ea AA |
6100 | status = nfs4_wait_for_completion_rpc_task(task); |
6101 | if (status == 0) | |
6102 | status = task->tk_status; | |
fce5c838 | 6103 | rpc_put_task(task); |
acf82b85 | 6104 | return 0; |
fce5c838 RL |
6105 | out: |
6106 | dprintk("<-- %s status=%d\n", __func__, status); | |
6107 | return status; | |
6108 | } | |
b1f69b75 AA |
6109 | |
6110 | static void | |
6111 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6112 | { | |
6113 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6114 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
6115 | |
6116 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6117 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6118 | * right now covering the LAYOUTGET we are about to send. | |
6119 | * However, that is not so catastrophic, and there seems | |
6120 | * to be no way to prevent it completely. | |
6121 | */ | |
b1f69b75 | 6122 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 6123 | &lgp->res.seq_res, task)) |
b1f69b75 | 6124 | return; |
cf7d63f1 FI |
6125 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6126 | NFS_I(lgp->args.inode)->layout, | |
6127 | lgp->args.ctx->state)) { | |
6128 | rpc_exit(task, NFS4_OK); | |
6129 | return; | |
6130 | } | |
b1f69b75 AA |
6131 | rpc_call_start(task); |
6132 | } | |
6133 | ||
6134 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6135 | { | |
6136 | struct nfs4_layoutget *lgp = calldata; | |
6137 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
6138 | ||
6139 | dprintk("--> %s\n", __func__); | |
6140 | ||
6141 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
6142 | return; | |
6143 | ||
6144 | switch (task->tk_status) { | |
6145 | case 0: | |
6146 | break; | |
6147 | case -NFS4ERR_LAYOUTTRYLATER: | |
6148 | case -NFS4ERR_RECALLCONFLICT: | |
6149 | task->tk_status = -NFS4ERR_DELAY; | |
6150 | /* Fall through */ | |
6151 | default: | |
6152 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6153 | rpc_restart_call_prepare(task); | |
6154 | return; | |
6155 | } | |
6156 | } | |
b1f69b75 AA |
6157 | dprintk("<-- %s\n", __func__); |
6158 | } | |
6159 | ||
6160 | static void nfs4_layoutget_release(void *calldata) | |
6161 | { | |
6162 | struct nfs4_layoutget *lgp = calldata; | |
6163 | ||
6164 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
6165 | put_nfs_open_context(lgp->args.ctx); |
6166 | kfree(calldata); | |
6167 | dprintk("<-- %s\n", __func__); | |
6168 | } | |
6169 | ||
6170 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6171 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6172 | .rpc_call_done = nfs4_layoutget_done, | |
6173 | .rpc_release = nfs4_layoutget_release, | |
6174 | }; | |
6175 | ||
6176 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
6177 | { | |
6178 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
6179 | struct rpc_task *task; | |
6180 | struct rpc_message msg = { | |
6181 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6182 | .rpc_argp = &lgp->args, | |
6183 | .rpc_resp = &lgp->res, | |
6184 | }; | |
6185 | struct rpc_task_setup task_setup_data = { | |
6186 | .rpc_client = server->client, | |
6187 | .rpc_message = &msg, | |
6188 | .callback_ops = &nfs4_layoutget_call_ops, | |
6189 | .callback_data = lgp, | |
6190 | .flags = RPC_TASK_ASYNC, | |
6191 | }; | |
6192 | int status = 0; | |
6193 | ||
6194 | dprintk("--> %s\n", __func__); | |
6195 | ||
35124a09 | 6196 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6197 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6198 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
6199 | task = rpc_run_task(&task_setup_data); |
6200 | if (IS_ERR(task)) | |
6201 | return PTR_ERR(task); | |
6202 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
6203 | if (status == 0) |
6204 | status = task->tk_status; | |
6205 | if (status == 0) | |
6206 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
6207 | rpc_put_task(task); |
6208 | dprintk("<-- %s status=%d\n", __func__, status); | |
6209 | return status; | |
6210 | } | |
6211 | ||
cbe82603 BH |
6212 | static void |
6213 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6214 | { | |
6215 | struct nfs4_layoutreturn *lrp = calldata; | |
6216 | ||
6217 | dprintk("--> %s\n", __func__); | |
6218 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 6219 | &lrp->res.seq_res, task)) |
cbe82603 BH |
6220 | return; |
6221 | rpc_call_start(task); | |
6222 | } | |
6223 | ||
6224 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6225 | { | |
6226 | struct nfs4_layoutreturn *lrp = calldata; | |
6227 | struct nfs_server *server; | |
a56aaa02 | 6228 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6229 | |
6230 | dprintk("--> %s\n", __func__); | |
6231 | ||
6232 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
6233 | return; | |
6234 | ||
6235 | server = NFS_SERVER(lrp->args.inode); | |
6236 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6237 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6238 | return; |
6239 | } | |
a2e1d4f2 | 6240 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 6241 | if (task->tk_status == 0) { |
cbe82603 | 6242 | if (lrp->res.lrs_present) { |
cbe82603 | 6243 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
6244 | } else |
6245 | BUG_ON(!list_empty(&lo->plh_segs)); | |
6246 | } | |
a2e1d4f2 FI |
6247 | lo->plh_block_lgets--; |
6248 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
6249 | dprintk("<-- %s\n", __func__); |
6250 | } | |
6251 | ||
6252 | static void nfs4_layoutreturn_release(void *calldata) | |
6253 | { | |
6254 | struct nfs4_layoutreturn *lrp = calldata; | |
6255 | ||
6256 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 6257 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6258 | kfree(calldata); |
6259 | dprintk("<-- %s\n", __func__); | |
6260 | } | |
6261 | ||
6262 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6263 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6264 | .rpc_call_done = nfs4_layoutreturn_done, | |
6265 | .rpc_release = nfs4_layoutreturn_release, | |
6266 | }; | |
6267 | ||
6268 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6269 | { | |
6270 | struct rpc_task *task; | |
6271 | struct rpc_message msg = { | |
6272 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6273 | .rpc_argp = &lrp->args, | |
6274 | .rpc_resp = &lrp->res, | |
6275 | }; | |
6276 | struct rpc_task_setup task_setup_data = { | |
6277 | .rpc_client = lrp->clp->cl_rpcclient, | |
6278 | .rpc_message = &msg, | |
6279 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6280 | .callback_data = lrp, | |
6281 | }; | |
6282 | int status; | |
6283 | ||
6284 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6285 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6286 | task = rpc_run_task(&task_setup_data); |
6287 | if (IS_ERR(task)) | |
6288 | return PTR_ERR(task); | |
6289 | status = task->tk_status; | |
6290 | dprintk("<-- %s status=%d\n", __func__, status); | |
6291 | rpc_put_task(task); | |
6292 | return status; | |
6293 | } | |
6294 | ||
7f11d8d3 AA |
6295 | /* |
6296 | * Retrieve the list of Data Server devices from the MDS. | |
6297 | */ | |
6298 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6299 | const struct nfs_fh *fh, | |
6300 | struct pnfs_devicelist *devlist) | |
6301 | { | |
6302 | struct nfs4_getdevicelist_args args = { | |
6303 | .fh = fh, | |
6304 | .layoutclass = server->pnfs_curr_ld->id, | |
6305 | }; | |
6306 | struct nfs4_getdevicelist_res res = { | |
6307 | .devlist = devlist, | |
6308 | }; | |
6309 | struct rpc_message msg = { | |
6310 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6311 | .rpc_argp = &args, | |
6312 | .rpc_resp = &res, | |
6313 | }; | |
6314 | int status; | |
6315 | ||
6316 | dprintk("--> %s\n", __func__); | |
6317 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6318 | &res.seq_res, 0); | |
6319 | dprintk("<-- %s status=%d\n", __func__, status); | |
6320 | return status; | |
6321 | } | |
6322 | ||
6323 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6324 | const struct nfs_fh *fh, | |
6325 | struct pnfs_devicelist *devlist) | |
6326 | { | |
6327 | struct nfs4_exception exception = { }; | |
6328 | int err; | |
6329 | ||
6330 | do { | |
6331 | err = nfs4_handle_exception(server, | |
6332 | _nfs4_getdevicelist(server, fh, devlist), | |
6333 | &exception); | |
6334 | } while (exception.retry); | |
6335 | ||
6336 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6337 | err, devlist->num_devs); | |
6338 | ||
6339 | return err; | |
6340 | } | |
6341 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6342 | ||
b1f69b75 AA |
6343 | static int |
6344 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6345 | { | |
6346 | struct nfs4_getdeviceinfo_args args = { | |
6347 | .pdev = pdev, | |
6348 | }; | |
6349 | struct nfs4_getdeviceinfo_res res = { | |
6350 | .pdev = pdev, | |
6351 | }; | |
6352 | struct rpc_message msg = { | |
6353 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6354 | .rpc_argp = &args, | |
6355 | .rpc_resp = &res, | |
6356 | }; | |
6357 | int status; | |
6358 | ||
6359 | dprintk("--> %s\n", __func__); | |
7c513058 | 6360 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6361 | dprintk("<-- %s status=%d\n", __func__, status); |
6362 | ||
6363 | return status; | |
6364 | } | |
6365 | ||
6366 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6367 | { | |
6368 | struct nfs4_exception exception = { }; | |
6369 | int err; | |
6370 | ||
6371 | do { | |
6372 | err = nfs4_handle_exception(server, | |
6373 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6374 | &exception); | |
6375 | } while (exception.retry); | |
6376 | return err; | |
6377 | } | |
6378 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6379 | ||
863a3c6c AA |
6380 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6381 | { | |
6382 | struct nfs4_layoutcommit_data *data = calldata; | |
6383 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6384 | ||
6385 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6386 | &data->res.seq_res, task)) |
863a3c6c AA |
6387 | return; |
6388 | rpc_call_start(task); | |
6389 | } | |
6390 | ||
6391 | static void | |
6392 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6393 | { | |
6394 | struct nfs4_layoutcommit_data *data = calldata; | |
6395 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6396 | ||
6397 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6398 | return; | |
6399 | ||
6400 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6401 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6402 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6403 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6404 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6405 | task->tk_status = 0; |
e59d27e0 TM |
6406 | break; |
6407 | case 0: | |
863a3c6c AA |
6408 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6409 | data->res.fattr); | |
e59d27e0 TM |
6410 | break; |
6411 | default: | |
6412 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6413 | rpc_restart_call_prepare(task); | |
6414 | return; | |
6415 | } | |
6416 | } | |
863a3c6c AA |
6417 | } |
6418 | ||
6419 | static void nfs4_layoutcommit_release(void *calldata) | |
6420 | { | |
6421 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6422 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6423 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6424 | |
db29c089 | 6425 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6426 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6427 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6428 | list_del_init(&lseg->pls_lc_list); | |
6429 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6430 | &lseg->pls_flags)) | |
6431 | put_lseg(lseg); | |
6432 | } | |
92407e75 PT |
6433 | |
6434 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6435 | smp_mb__after_clear_bit(); | |
6436 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6437 | ||
863a3c6c AA |
6438 | put_rpccred(data->cred); |
6439 | kfree(data); | |
6440 | } | |
6441 | ||
6442 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6443 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6444 | .rpc_call_done = nfs4_layoutcommit_done, | |
6445 | .rpc_release = nfs4_layoutcommit_release, | |
6446 | }; | |
6447 | ||
6448 | int | |
ef311537 | 6449 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6450 | { |
6451 | struct rpc_message msg = { | |
6452 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6453 | .rpc_argp = &data->args, | |
6454 | .rpc_resp = &data->res, | |
6455 | .rpc_cred = data->cred, | |
6456 | }; | |
6457 | struct rpc_task_setup task_setup_data = { | |
6458 | .task = &data->task, | |
6459 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6460 | .rpc_message = &msg, | |
6461 | .callback_ops = &nfs4_layoutcommit_ops, | |
6462 | .callback_data = data, | |
6463 | .flags = RPC_TASK_ASYNC, | |
6464 | }; | |
6465 | struct rpc_task *task; | |
6466 | int status = 0; | |
6467 | ||
6468 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6469 | "lbw: %llu inode %lu\n", | |
6470 | data->task.tk_pid, sync, | |
6471 | data->args.lastbytewritten, | |
6472 | data->args.inode->i_ino); | |
6473 | ||
9d12b216 | 6474 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6475 | task = rpc_run_task(&task_setup_data); |
6476 | if (IS_ERR(task)) | |
6477 | return PTR_ERR(task); | |
ef311537 | 6478 | if (sync == false) |
863a3c6c AA |
6479 | goto out; |
6480 | status = nfs4_wait_for_completion_rpc_task(task); | |
6481 | if (status != 0) | |
6482 | goto out; | |
6483 | status = task->tk_status; | |
6484 | out: | |
6485 | dprintk("%s: status %d\n", __func__, status); | |
6486 | rpc_put_task(task); | |
6487 | return status; | |
6488 | } | |
fca78d6d BS |
6489 | |
6490 | static int | |
6491 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6492 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6493 | { | |
6494 | struct nfs41_secinfo_no_name_args args = { | |
6495 | .style = SECINFO_STYLE_CURRENT_FH, | |
6496 | }; | |
6497 | struct nfs4_secinfo_res res = { | |
6498 | .flavors = flavors, | |
6499 | }; | |
6500 | struct rpc_message msg = { | |
6501 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6502 | .rpc_argp = &args, | |
6503 | .rpc_resp = &res, | |
6504 | }; | |
6505 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6506 | } | |
6507 | ||
6508 | static int | |
6509 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6510 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6511 | { | |
6512 | struct nfs4_exception exception = { }; | |
6513 | int err; | |
6514 | do { | |
6515 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6516 | switch (err) { | |
6517 | case 0: | |
6518 | case -NFS4ERR_WRONGSEC: | |
6519 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6520 | goto out; |
fca78d6d BS |
6521 | default: |
6522 | err = nfs4_handle_exception(server, err, &exception); | |
6523 | } | |
6524 | } while (exception.retry); | |
05e9cfb4 | 6525 | out: |
fca78d6d BS |
6526 | return err; |
6527 | } | |
6528 | ||
6529 | static int | |
6530 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6531 | struct nfs_fsinfo *info) | |
6532 | { | |
6533 | int err; | |
6534 | struct page *page; | |
6535 | rpc_authflavor_t flavor; | |
6536 | struct nfs4_secinfo_flavors *flavors; | |
6537 | ||
6538 | page = alloc_page(GFP_KERNEL); | |
6539 | if (!page) { | |
6540 | err = -ENOMEM; | |
6541 | goto out; | |
6542 | } | |
6543 | ||
6544 | flavors = page_address(page); | |
6545 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6546 | ||
6547 | /* | |
6548 | * Fall back on "guess and check" method if | |
6549 | * the server doesn't support SECINFO_NO_NAME | |
6550 | */ | |
6551 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6552 | err = nfs4_find_root_sec(server, fhandle, info); | |
6553 | goto out_freepage; | |
6554 | } | |
6555 | if (err) | |
6556 | goto out_freepage; | |
6557 | ||
6558 | flavor = nfs_find_best_sec(flavors); | |
6559 | if (err == 0) | |
6560 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6561 | ||
6562 | out_freepage: | |
6563 | put_page(page); | |
6564 | if (err == -EACCES) | |
6565 | return -EPERM; | |
6566 | out: | |
6567 | return err; | |
6568 | } | |
1cab0652 BS |
6569 | |
6570 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6571 | { |
6572 | int status; | |
6573 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6574 | .stateid = stateid, |
7d974794 BS |
6575 | }; |
6576 | struct nfs41_test_stateid_res res; | |
6577 | struct rpc_message msg = { | |
6578 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6579 | .rpc_argp = &args, | |
6580 | .rpc_resp = &res, | |
6581 | }; | |
1cab0652 | 6582 | |
9d12b216 | 6583 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 BS |
6584 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
6585 | ||
6586 | if (status == NFS_OK) | |
6587 | return res.status; | |
7d974794 BS |
6588 | return status; |
6589 | } | |
6590 | ||
1cab0652 | 6591 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6592 | { |
6593 | struct nfs4_exception exception = { }; | |
6594 | int err; | |
6595 | do { | |
6596 | err = nfs4_handle_exception(server, | |
1cab0652 | 6597 | _nfs41_test_stateid(server, stateid), |
7d974794 BS |
6598 | &exception); |
6599 | } while (exception.retry); | |
6600 | return err; | |
6601 | } | |
9aeda35f | 6602 | |
1cab0652 | 6603 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6604 | { |
9aeda35f | 6605 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6606 | .stateid = stateid, |
9aeda35f BS |
6607 | }; |
6608 | struct nfs41_free_stateid_res res; | |
6609 | struct rpc_message msg = { | |
6610 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6611 | .rpc_argp = &args, | |
6612 | .rpc_resp = &res, | |
6613 | }; | |
6614 | ||
9d12b216 TM |
6615 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
6616 | return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); | |
9aeda35f BS |
6617 | } |
6618 | ||
1cab0652 | 6619 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6620 | { |
6621 | struct nfs4_exception exception = { }; | |
6622 | int err; | |
6623 | do { | |
6624 | err = nfs4_handle_exception(server, | |
1cab0652 | 6625 | _nfs4_free_stateid(server, stateid), |
9aeda35f BS |
6626 | &exception); |
6627 | } while (exception.retry); | |
6628 | return err; | |
6629 | } | |
36281caa TM |
6630 | |
6631 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6632 | const nfs4_stateid *s2) | |
6633 | { | |
2d2f24ad | 6634 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6635 | return false; |
6636 | ||
2d2f24ad | 6637 | if (s1->seqid == s2->seqid) |
36281caa | 6638 | return true; |
2d2f24ad | 6639 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6640 | return true; |
6641 | ||
6642 | return false; | |
6643 | } | |
6644 | ||
557134a3 AA |
6645 | #endif /* CONFIG_NFS_V4_1 */ |
6646 | ||
36281caa TM |
6647 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6648 | const nfs4_stateid *s2) | |
6649 | { | |
f597c537 | 6650 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6651 | } |
6652 | ||
6653 | ||
17280175 | 6654 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6655 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6656 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6657 | .recover_open = nfs4_open_reclaim, |
6658 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6659 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6660 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6661 | }; |
6662 | ||
591d71cb | 6663 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6664 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6665 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6666 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6667 | .recover_open = nfs4_open_reclaim, | |
6668 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6669 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6670 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6671 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6672 | }; |
6673 | #endif /* CONFIG_NFS_V4_1 */ | |
6674 | ||
17280175 | 6675 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6676 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6677 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6678 | .recover_open = nfs4_open_expired, | |
6679 | .recover_lock = nfs4_lock_expired, | |
6680 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6681 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6682 | }; |
6683 | ||
6684 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6685 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6686 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6687 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6688 | .recover_open = nfs41_open_expired, |
6689 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6690 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6691 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6692 | }; |
591d71cb | 6693 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6694 | |
17280175 | 6695 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6696 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6697 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6698 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6699 | }; |
6700 | ||
6701 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6702 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6703 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6704 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6705 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6706 | }; |
6707 | #endif | |
6708 | ||
97dc1359 TM |
6709 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6710 | .minor_version = 0, | |
6711 | .call_sync = _nfs4_call_sync, | |
36281caa | 6712 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6713 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6714 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6715 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6716 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6717 | }; |
6718 | ||
6719 | #if defined(CONFIG_NFS_V4_1) | |
6720 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6721 | .minor_version = 1, | |
6722 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 6723 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6724 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6725 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6726 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6727 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6728 | }; |
6729 | #endif | |
6730 | ||
97dc1359 TM |
6731 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6732 | [0] = &nfs_v4_0_minor_ops, | |
6733 | #if defined(CONFIG_NFS_V4_1) | |
6734 | [1] = &nfs_v4_1_minor_ops, | |
6735 | #endif | |
6736 | }; | |
6737 | ||
92e1d5be | 6738 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6739 | .permission = nfs_permission, |
6740 | .getattr = nfs_getattr, | |
6741 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6742 | .getxattr = generic_getxattr, |
6743 | .setxattr = generic_setxattr, | |
6744 | .listxattr = generic_listxattr, | |
6745 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6746 | }; |
6747 | ||
509de811 | 6748 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6749 | .version = 4, /* protocol version */ |
6750 | .dentry_ops = &nfs4_dentry_operations, | |
6751 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6752 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6753 | .file_ops = &nfs4_file_operations, |
1da177e4 | 6754 | .getroot = nfs4_proc_get_root, |
281cad46 | 6755 | .submount = nfs4_submount, |
1da177e4 LT |
6756 | .getattr = nfs4_proc_getattr, |
6757 | .setattr = nfs4_proc_setattr, | |
6758 | .lookup = nfs4_proc_lookup, | |
6759 | .access = nfs4_proc_access, | |
6760 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6761 | .create = nfs4_proc_create, |
6762 | .remove = nfs4_proc_remove, | |
6763 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 6764 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
6765 | .unlink_done = nfs4_proc_unlink_done, |
6766 | .rename = nfs4_proc_rename, | |
d3d4152a | 6767 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 6768 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 6769 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
6770 | .link = nfs4_proc_link, |
6771 | .symlink = nfs4_proc_symlink, | |
6772 | .mkdir = nfs4_proc_mkdir, | |
6773 | .rmdir = nfs4_proc_remove, | |
6774 | .readdir = nfs4_proc_readdir, | |
6775 | .mknod = nfs4_proc_mknod, | |
6776 | .statfs = nfs4_proc_statfs, | |
6777 | .fsinfo = nfs4_proc_fsinfo, | |
6778 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6779 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6780 | .decode_dirent = nfs4_decode_dirent, |
6781 | .read_setup = nfs4_proc_read_setup, | |
ea7c3303 | 6782 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 6783 | .read_done = nfs4_read_done, |
1da177e4 | 6784 | .write_setup = nfs4_proc_write_setup, |
c6cb80d0 | 6785 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 6786 | .write_done = nfs4_write_done, |
1da177e4 | 6787 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 6788 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 6789 | .commit_done = nfs4_commit_done, |
1da177e4 | 6790 | .lock = nfs4_proc_lock, |
e50a1c2e | 6791 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6792 | .close_context = nfs4_close_context, |
2b484297 | 6793 | .open_context = nfs4_atomic_open, |
45a52a02 | 6794 | .init_client = nfs4_init_client, |
1da177e4 LT |
6795 | }; |
6796 | ||
64c2ce8b AK |
6797 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6798 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6799 | .list = nfs4_xattr_list_nfs4_acl, | |
6800 | .get = nfs4_xattr_get_nfs4_acl, | |
6801 | .set = nfs4_xattr_set_nfs4_acl, | |
6802 | }; | |
6803 | ||
6804 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6805 | &nfs4_xattr_nfs4_acl_handler, | |
6806 | NULL | |
6807 | }; | |
6808 | ||
ef159e91 TM |
6809 | module_param(max_session_slots, ushort, 0644); |
6810 | MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 " | |
6811 | "requests the client will negotiate"); | |
6812 | ||
1da177e4 LT |
6813 | /* |
6814 | * Local variables: | |
6815 | * c-basic-offset: 8 | |
6816 | * End: | |
6817 | */ |