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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 LT |
45 | #include <linux/sunrpc/clnt.h> |
46 | #include <linux/nfs.h> | |
47 | #include <linux/nfs4.h> | |
48 | #include <linux/nfs_fs.h> | |
49 | #include <linux/nfs_page.h> | |
9b7160c5 | 50 | #include <linux/nfs_mount.h> |
1da177e4 | 51 | #include <linux/namei.h> |
02a913a7 | 52 | #include <linux/mount.h> |
99fe60d0 | 53 | #include <linux/module.h> |
6926afd1 | 54 | #include <linux/nfs_idmap.h> |
5a0ffe54 | 55 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 56 | #include <linux/xattr.h> |
c7a360b0 | 57 | #include <linux/utsname.h> |
d310310c | 58 | #include <linux/freezer.h> |
1da177e4 | 59 | |
4ce79717 | 60 | #include "nfs4_fs.h" |
1da177e4 | 61 | #include "delegation.h" |
101070ca | 62 | #include "internal.h" |
006ea73e | 63 | #include "iostat.h" |
fc931582 | 64 | #include "callback.h" |
b1f69b75 | 65 | #include "pnfs.h" |
f092075d | 66 | #include "netns.h" |
1da177e4 LT |
67 | |
68 | #define NFSDBG_FACILITY NFSDBG_PROC | |
69 | ||
2066fe89 | 70 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
71 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
72 | ||
a78cb57a TM |
73 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
74 | ||
cdd4e68b | 75 | struct nfs4_opendata; |
864472e9 | 76 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 77 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 78 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 79 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
81934ddb | 80 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
bae36241 | 81 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *); |
9936781d | 82 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
83 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
84 | struct nfs_fattr *fattr, struct iattr *sattr, | |
85 | struct nfs4_state *state); | |
f062eb6c | 86 | #ifdef CONFIG_NFS_V4_1 |
1cab0652 BS |
87 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *); |
88 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *); | |
f062eb6c | 89 | #endif |
1da177e4 | 90 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 91 | static int nfs4_map_errors(int err) |
1da177e4 | 92 | { |
52567b03 TM |
93 | if (err >= -1000) |
94 | return err; | |
95 | switch (err) { | |
96 | case -NFS4ERR_RESOURCE: | |
97 | return -EREMOTEIO; | |
7ebb9315 BS |
98 | case -NFS4ERR_WRONGSEC: |
99 | return -EPERM; | |
3ddeb7c5 TM |
100 | case -NFS4ERR_BADOWNER: |
101 | case -NFS4ERR_BADNAME: | |
102 | return -EINVAL; | |
fb13bfa7 TM |
103 | case -NFS4ERR_SHARE_DENIED: |
104 | return -EACCES; | |
f25efd85 SD |
105 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
106 | return -EPROTONOSUPPORT; | |
52567b03 | 107 | default: |
1da177e4 | 108 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 109 | __func__, -err); |
52567b03 | 110 | break; |
1da177e4 | 111 | } |
52567b03 | 112 | return -EIO; |
1da177e4 LT |
113 | } |
114 | ||
115 | /* | |
116 | * This is our standard bitmap for GETATTR requests. | |
117 | */ | |
1549210f | 118 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
119 | FATTR4_WORD0_TYPE |
120 | | FATTR4_WORD0_CHANGE | |
121 | | FATTR4_WORD0_SIZE | |
122 | | FATTR4_WORD0_FSID | |
123 | | FATTR4_WORD0_FILEID, | |
124 | FATTR4_WORD1_MODE | |
125 | | FATTR4_WORD1_NUMLINKS | |
126 | | FATTR4_WORD1_OWNER | |
127 | | FATTR4_WORD1_OWNER_GROUP | |
128 | | FATTR4_WORD1_RAWDEV | |
129 | | FATTR4_WORD1_SPACE_USED | |
130 | | FATTR4_WORD1_TIME_ACCESS | |
131 | | FATTR4_WORD1_TIME_METADATA | |
132 | | FATTR4_WORD1_TIME_MODIFY | |
133 | }; | |
134 | ||
1549210f TM |
135 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
136 | FATTR4_WORD0_TYPE | |
137 | | FATTR4_WORD0_CHANGE | |
138 | | FATTR4_WORD0_SIZE | |
139 | | FATTR4_WORD0_FSID | |
140 | | FATTR4_WORD0_FILEID, | |
141 | FATTR4_WORD1_MODE | |
142 | | FATTR4_WORD1_NUMLINKS | |
143 | | FATTR4_WORD1_OWNER | |
144 | | FATTR4_WORD1_OWNER_GROUP | |
145 | | FATTR4_WORD1_RAWDEV | |
146 | | FATTR4_WORD1_SPACE_USED | |
147 | | FATTR4_WORD1_TIME_ACCESS | |
148 | | FATTR4_WORD1_TIME_METADATA | |
149 | | FATTR4_WORD1_TIME_MODIFY, | |
150 | FATTR4_WORD2_MDSTHRESHOLD | |
151 | }; | |
152 | ||
1da177e4 LT |
153 | const u32 nfs4_statfs_bitmap[2] = { |
154 | FATTR4_WORD0_FILES_AVAIL | |
155 | | FATTR4_WORD0_FILES_FREE | |
156 | | FATTR4_WORD0_FILES_TOTAL, | |
157 | FATTR4_WORD1_SPACE_AVAIL | |
158 | | FATTR4_WORD1_SPACE_FREE | |
159 | | FATTR4_WORD1_SPACE_TOTAL | |
160 | }; | |
161 | ||
4ce79717 | 162 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
163 | FATTR4_WORD0_MAXLINK |
164 | | FATTR4_WORD0_MAXNAME, | |
165 | 0 | |
166 | }; | |
167 | ||
dae100c2 | 168 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
169 | | FATTR4_WORD0_MAXREAD |
170 | | FATTR4_WORD0_MAXWRITE | |
171 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 172 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
173 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
174 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
175 | }; |
176 | ||
830b8e33 MN |
177 | const u32 nfs4_fs_locations_bitmap[2] = { |
178 | FATTR4_WORD0_TYPE | |
179 | | FATTR4_WORD0_CHANGE | |
180 | | FATTR4_WORD0_SIZE | |
181 | | FATTR4_WORD0_FSID | |
182 | | FATTR4_WORD0_FILEID | |
183 | | FATTR4_WORD0_FS_LOCATIONS, | |
184 | FATTR4_WORD1_MODE | |
185 | | FATTR4_WORD1_NUMLINKS | |
186 | | FATTR4_WORD1_OWNER | |
187 | | FATTR4_WORD1_OWNER_GROUP | |
188 | | FATTR4_WORD1_RAWDEV | |
189 | | FATTR4_WORD1_SPACE_USED | |
190 | | FATTR4_WORD1_TIME_ACCESS | |
191 | | FATTR4_WORD1_TIME_METADATA | |
192 | | FATTR4_WORD1_TIME_MODIFY | |
193 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
194 | }; | |
195 | ||
bc4785cd | 196 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
197 | struct nfs4_readdir_arg *readdir) |
198 | { | |
0dbb4c67 | 199 | __be32 *start, *p; |
1da177e4 LT |
200 | |
201 | BUG_ON(readdir->count < 80); | |
202 | if (cookie > 2) { | |
b7ef1956 | 203 | readdir->cookie = cookie; |
1da177e4 LT |
204 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
205 | return; | |
206 | } | |
207 | ||
208 | readdir->cookie = 0; | |
209 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
210 | if (cookie == 2) | |
211 | return; | |
212 | ||
213 | /* | |
214 | * NFSv4 servers do not return entries for '.' and '..' | |
215 | * Therefore, we fake these entries here. We let '.' | |
216 | * have cookie 0 and '..' have cookie 1. Note that | |
217 | * when talking to the server, we always send cookie 0 | |
218 | * instead of 1 or 2. | |
219 | */ | |
2b86ce2d | 220 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
221 | |
222 | if (cookie == 0) { | |
223 | *p++ = xdr_one; /* next */ | |
224 | *p++ = xdr_zero; /* cookie, first word */ | |
225 | *p++ = xdr_one; /* cookie, second word */ | |
226 | *p++ = xdr_one; /* entry len */ | |
227 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
228 | p++; | |
229 | *p++ = xdr_one; /* bitmap length */ | |
230 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
231 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 232 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
233 | } |
234 | ||
235 | *p++ = xdr_one; /* next */ | |
236 | *p++ = xdr_zero; /* cookie, first word */ | |
237 | *p++ = xdr_two; /* cookie, second word */ | |
238 | *p++ = xdr_two; /* entry len */ | |
239 | memcpy(p, "..\0\0", 4); /* entry */ | |
240 | p++; | |
241 | *p++ = xdr_one; /* bitmap length */ | |
242 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
243 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 244 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
245 | |
246 | readdir->pgbase = (char *)p - (char *)start; | |
247 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 248 | kunmap_atomic(start); |
1da177e4 LT |
249 | } |
250 | ||
65de872e TM |
251 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
252 | { | |
253 | int res; | |
254 | ||
255 | might_sleep(); | |
256 | ||
e005e804 | 257 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 258 | nfs_wait_bit_killable, TASK_KILLABLE); |
46a87b8a CL |
259 | if (res) |
260 | return res; | |
261 | ||
262 | if (clp->cl_cons_state < 0) | |
263 | return clp->cl_cons_state; | |
264 | return 0; | |
65de872e TM |
265 | } |
266 | ||
267 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
268 | { | |
269 | int res = 0; | |
270 | ||
271 | might_sleep(); | |
272 | ||
273 | if (*timeout <= 0) | |
274 | *timeout = NFS4_POLL_RETRY_MIN; | |
275 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
276 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 277 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
278 | if (fatal_signal_pending(current)) |
279 | res = -ERESTARTSYS; | |
280 | *timeout <<= 1; | |
281 | return res; | |
282 | } | |
283 | ||
284 | /* This is the error handling routine for processes that are allowed | |
285 | * to sleep. | |
286 | */ | |
b064eca2 | 287 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
288 | { |
289 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 290 | struct nfs4_state *state = exception->state; |
3114ea7a | 291 | struct inode *inode = exception->inode; |
65de872e TM |
292 | int ret = errorcode; |
293 | ||
294 | exception->retry = 0; | |
295 | switch(errorcode) { | |
296 | case 0: | |
297 | return 0; | |
3114ea7a | 298 | case -NFS4ERR_OPENMODE: |
011e2a7f | 299 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 300 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
301 | exception->retry = 1; |
302 | return 0; | |
303 | } | |
304 | if (state == NULL) | |
305 | break; | |
306 | nfs4_schedule_stateid_recovery(server, state); | |
307 | goto wait_on_recovery; | |
a1d0b5ee | 308 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
309 | case -NFS4ERR_ADMIN_REVOKED: |
310 | case -NFS4ERR_BAD_STATEID: | |
9e33bed5 TM |
311 | if (state == NULL) |
312 | break; | |
14977489 | 313 | nfs_remove_bad_delegation(state->inode); |
0400a6b0 TM |
314 | nfs4_schedule_stateid_recovery(server, state); |
315 | goto wait_on_recovery; | |
0ced63d1 TM |
316 | case -NFS4ERR_EXPIRED: |
317 | if (state != NULL) | |
318 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 319 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 320 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
321 | nfs4_schedule_lease_recovery(clp); |
322 | goto wait_on_recovery; | |
03391693 | 323 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
324 | case -NFS4ERR_BADSESSION: |
325 | case -NFS4ERR_BADSLOT: | |
326 | case -NFS4ERR_BAD_HIGH_SLOT: | |
327 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
328 | case -NFS4ERR_DEADSESSION: | |
329 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
330 | case -NFS4ERR_SEQ_MISORDERED: | |
331 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
332 | errorcode); | |
9f594791 | 333 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
4745e315 | 334 | exception->retry = 1; |
b9179237 | 335 | break; |
03391693 | 336 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 337 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
338 | if (exception->timeout > HZ) { |
339 | /* We have retried a decent amount, time to | |
340 | * fail | |
341 | */ | |
342 | ret = -EBUSY; | |
343 | break; | |
344 | } | |
65de872e TM |
345 | case -NFS4ERR_GRACE: |
346 | case -NFS4ERR_DELAY: | |
2c643488 | 347 | case -EKEYEXPIRED: |
65de872e TM |
348 | ret = nfs4_delay(server->client, &exception->timeout); |
349 | if (ret != 0) | |
350 | break; | |
a8a4ae3a | 351 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
352 | case -NFS4ERR_OLD_STATEID: |
353 | exception->retry = 1; | |
b064eca2 TM |
354 | break; |
355 | case -NFS4ERR_BADOWNER: | |
356 | /* The following works around a Linux server bug! */ | |
357 | case -NFS4ERR_BADNAME: | |
358 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
359 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
360 | exception->retry = 1; | |
361 | printk(KERN_WARNING "NFS: v4 server %s " | |
362 | "does not accept raw " | |
363 | "uid/gids. " | |
364 | "Reenabling the idmapper.\n", | |
365 | server->nfs_client->cl_hostname); | |
366 | } | |
65de872e TM |
367 | } |
368 | /* We failed to handle the error */ | |
369 | return nfs4_map_errors(ret); | |
0400a6b0 | 370 | wait_on_recovery: |
a2c0b9e2 TM |
371 | ret = nfs4_wait_clnt_recover(clp); |
372 | if (ret == 0) | |
373 | exception->retry = 1; | |
374 | return ret; | |
65de872e TM |
375 | } |
376 | ||
377 | ||
452e9352 | 378 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 379 | { |
1da177e4 LT |
380 | spin_lock(&clp->cl_lock); |
381 | if (time_before(clp->cl_last_renewal,timestamp)) | |
382 | clp->cl_last_renewal = timestamp; | |
383 | spin_unlock(&clp->cl_lock); | |
384 | } | |
385 | ||
452e9352 TM |
386 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
387 | { | |
388 | do_renew_lease(server->nfs_client, timestamp); | |
389 | } | |
390 | ||
cccef3b9 AA |
391 | #if defined(CONFIG_NFS_V4_1) |
392 | ||
e2c4ab3c AA |
393 | /* |
394 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
395 | * | |
396 | * freeing a slot is trivially done by clearing its respective bit | |
397 | * in the bitmap. | |
398 | * If the freed slotid equals highest_used_slotid we want to update it | |
399 | * so that the server would be able to size down the slot table if needed, | |
400 | * otherwise we know that the highest_used_slotid is still in use. | |
401 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
402 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
403 | * highest slotid in use. | |
45d43c29 | 404 | * If none found, highest_used_slotid is set to NFS4_NO_SLOT. |
35dc1d74 TM |
405 | * |
406 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
407 | */ |
408 | static void | |
45d43c29 | 409 | nfs4_free_slot(struct nfs4_slot_table *tbl, u32 slotid) |
e2c4ab3c | 410 | { |
45d43c29 | 411 | BUG_ON(slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
412 | /* clear used bit in bitmap */ |
413 | __clear_bit(slotid, tbl->used_slots); | |
414 | ||
415 | /* update highest_used_slotid when it is freed */ | |
416 | if (slotid == tbl->highest_used_slotid) { | |
417 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 418 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
419 | tbl->highest_used_slotid = slotid; |
420 | else | |
45d43c29 | 421 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
e2c4ab3c | 422 | } |
45d43c29 TM |
423 | dprintk("%s: slotid %u highest_used_slotid %d\n", __func__, |
424 | slotid, tbl->highest_used_slotid); | |
e2c4ab3c AA |
425 | } |
426 | ||
961a828d TM |
427 | bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) |
428 | { | |
429 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
430 | return true; | |
e2c4ab3c AA |
431 | } |
432 | ||
3bfb0fc5 | 433 | /* |
42acd021 | 434 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 435 | */ |
42acd021 | 436 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 437 | { |
a2118c33 | 438 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
961a828d TM |
439 | rpc_wake_up_first(&ses->fc_slot_table.slot_tbl_waitq, |
440 | nfs4_set_task_privileged, NULL); | |
3bfb0fc5 AB |
441 | return; |
442 | } | |
443 | ||
45d43c29 | 444 | if (ses->fc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
3bfb0fc5 AB |
445 | return; |
446 | ||
42acd021 AA |
447 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
448 | complete(&ses->fc_slot_table.complete); | |
449 | } | |
450 | ||
451 | /* | |
452 | * Signal state manager thread if session back channel is drained | |
453 | */ | |
454 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
455 | { | |
456 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
45d43c29 | 457 | ses->bc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
42acd021 AA |
458 | return; |
459 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
460 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
461 | } |
462 | ||
d185a334 | 463 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
464 | { |
465 | struct nfs4_slot_table *tbl; | |
466 | ||
d185a334 | 467 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 468 | if (!res->sr_slot) { |
13615871 AA |
469 | /* just wake up the next guy waiting since |
470 | * we may have not consumed a slot after all */ | |
691daf3b | 471 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 472 | return; |
13615871 | 473 | } |
ea028ac9 | 474 | |
35dc1d74 | 475 | spin_lock(&tbl->slot_tbl_lock); |
aabd0b40 | 476 | nfs4_free_slot(tbl, res->sr_slot - tbl->slots); |
42acd021 | 477 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 478 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 479 | res->sr_slot = NULL; |
13615871 AA |
480 | } |
481 | ||
14516c3a | 482 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
483 | { |
484 | unsigned long timestamp; | |
14516c3a | 485 | struct nfs_client *clp; |
b0df806c AA |
486 | |
487 | /* | |
488 | * sr_status remains 1 if an RPC level error occurred. The server | |
489 | * may or may not have processed the sequence operation.. | |
490 | * Proceed as if the server received and processed the sequence | |
491 | * operation. | |
492 | */ | |
493 | if (res->sr_status == 1) | |
494 | res->sr_status = NFS_OK; | |
495 | ||
468f8613 BS |
496 | /* don't increment the sequence number if the task wasn't sent */ |
497 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
498 | goto out; |
499 | ||
691daf3b | 500 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
501 | switch (res->sr_status) { |
502 | case 0: | |
b0df806c | 503 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 504 | ++res->sr_slot->seq_nr; |
b0df806c | 505 | timestamp = res->sr_renewal_time; |
14516c3a | 506 | clp = res->sr_session->clp; |
452e9352 | 507 | do_renew_lease(clp, timestamp); |
0629e370 | 508 | /* Check sequence flags */ |
b4410c2f TM |
509 | if (res->sr_status_flags != 0) |
510 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
511 | break; |
512 | case -NFS4ERR_DELAY: | |
513 | /* The server detected a resend of the RPC call and | |
514 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
515 | * of RFC5661. | |
516 | */ | |
12364a4f | 517 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
518 | __func__, |
519 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
520 | res->sr_slot->seq_nr); | |
14516c3a TM |
521 | goto out_retry; |
522 | default: | |
523 | /* Just update the slot sequence no. */ | |
dfb4f309 | 524 | ++res->sr_slot->seq_nr; |
b0df806c AA |
525 | } |
526 | out: | |
527 | /* The session may be reset by one of the error handlers. */ | |
528 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 529 | nfs41_sequence_free_slot(res); |
14516c3a TM |
530 | return 1; |
531 | out_retry: | |
d05dd4e9 | 532 | if (!rpc_restart_call(task)) |
14516c3a TM |
533 | goto out; |
534 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
535 | return 0; | |
b0df806c AA |
536 | } |
537 | ||
14516c3a TM |
538 | static int nfs4_sequence_done(struct rpc_task *task, |
539 | struct nfs4_sequence_res *res) | |
df896455 | 540 | { |
14516c3a TM |
541 | if (res->sr_session == NULL) |
542 | return 1; | |
543 | return nfs41_sequence_done(task, res); | |
df896455 TM |
544 | } |
545 | ||
510b8175 BH |
546 | /* |
547 | * nfs4_find_slot - efficiently look for a free slot | |
548 | * | |
549 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
550 | * If found, we mark the slot as used, update the highest_used_slotid, | |
551 | * and respectively set up the sequence operation args. | |
45d43c29 | 552 | * The slot number is returned if found, or NFS4_NO_SLOT otherwise. |
fbcd4abc AA |
553 | * |
554 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 | 555 | */ |
45d43c29 | 556 | static u32 |
40ead580 | 557 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 | 558 | { |
45d43c29 TM |
559 | u32 slotid; |
560 | u32 ret_id = NFS4_NO_SLOT; | |
510b8175 | 561 | |
45d43c29 | 562 | dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n", |
510b8175 BH |
563 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, |
564 | tbl->max_slots); | |
565 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
566 | if (slotid >= tbl->max_slots) | |
567 | goto out; | |
568 | __set_bit(slotid, tbl->used_slots); | |
45d43c29 TM |
569 | if (slotid > tbl->highest_used_slotid || |
570 | tbl->highest_used_slotid == NFS4_NO_SLOT) | |
510b8175 BH |
571 | tbl->highest_used_slotid = slotid; |
572 | ret_id = slotid; | |
573 | out: | |
574 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
575 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
576 | return ret_id; |
577 | } | |
578 | ||
9d12b216 TM |
579 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
580 | struct nfs4_sequence_res *res, int cache_reply) | |
581 | { | |
582 | args->sa_session = NULL; | |
583 | args->sa_cache_this = 0; | |
584 | if (cache_reply) | |
585 | args->sa_cache_this = 1; | |
586 | res->sr_session = NULL; | |
587 | res->sr_slot = NULL; | |
588 | } | |
589 | ||
dc70d7b3 | 590 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
591 | struct nfs4_sequence_args *args, |
592 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
593 | struct rpc_task *task) |
594 | { | |
fbcd4abc AA |
595 | struct nfs4_slot *slot; |
596 | struct nfs4_slot_table *tbl; | |
45d43c29 | 597 | u32 slotid; |
fbcd4abc AA |
598 | |
599 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 600 | /* slot already allocated? */ |
dfb4f309 | 601 | if (res->sr_slot != NULL) |
ce5039c1 AA |
602 | return 0; |
603 | ||
fbcd4abc AA |
604 | tbl = &session->fc_slot_table; |
605 | ||
606 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 607 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 608 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 609 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 610 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 611 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 612 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 613 | return -EAGAIN; |
b069d94a AA |
614 | } |
615 | ||
689cf5c1 AB |
616 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
617 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
618 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
619 | spin_unlock(&tbl->slot_tbl_lock); | |
620 | dprintk("%s enforce FIFO order\n", __func__); | |
621 | return -EAGAIN; | |
622 | } | |
623 | ||
40ead580 | 624 | slotid = nfs4_find_slot(tbl); |
45d43c29 | 625 | if (slotid == NFS4_NO_SLOT) { |
fbcd4abc AA |
626 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
627 | spin_unlock(&tbl->slot_tbl_lock); | |
628 | dprintk("<-- %s: no free slots\n", __func__); | |
629 | return -EAGAIN; | |
630 | } | |
631 | spin_unlock(&tbl->slot_tbl_lock); | |
632 | ||
689cf5c1 | 633 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 634 | slot = tbl->slots + slotid; |
99fe60d0 | 635 | args->sa_session = session; |
fbcd4abc | 636 | args->sa_slotid = slotid; |
fbcd4abc AA |
637 | |
638 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
639 | ||
99fe60d0 | 640 | res->sr_session = session; |
dfb4f309 | 641 | res->sr_slot = slot; |
fbcd4abc | 642 | res->sr_renewal_time = jiffies; |
2a6e26cd | 643 | res->sr_status_flags = 0; |
fbcd4abc AA |
644 | /* |
645 | * sr_status is only set in decode_sequence, and so will remain | |
646 | * set to 1 if an rpc level failure occurs. | |
647 | */ | |
648 | res->sr_status = 1; | |
ce5039c1 AA |
649 | return 0; |
650 | } | |
dc70d7b3 | 651 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 652 | |
035168ab | 653 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
654 | struct nfs4_sequence_args *args, |
655 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
656 | struct rpc_task *task) |
657 | { | |
035168ab | 658 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
659 | int ret = 0; |
660 | ||
9d12b216 | 661 | if (session == NULL) |
035168ab | 662 | goto out; |
035168ab | 663 | |
12364a4f | 664 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
665 | __func__, session->clp, session, res->sr_slot ? |
666 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 667 | |
9d12b216 | 668 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
669 | out: |
670 | dprintk("<-- %s status=%d\n", __func__, ret); | |
671 | return ret; | |
672 | } | |
673 | ||
674 | struct nfs41_call_sync_data { | |
035168ab | 675 | const struct nfs_server *seq_server; |
ce5039c1 AA |
676 | struct nfs4_sequence_args *seq_args; |
677 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
678 | }; |
679 | ||
680 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
681 | { | |
682 | struct nfs41_call_sync_data *data = calldata; | |
683 | ||
035168ab TM |
684 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
685 | ||
686 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
9d12b216 | 687 | data->seq_res, task)) |
ce5039c1 AA |
688 | return; |
689 | rpc_call_start(task); | |
690 | } | |
691 | ||
b257957e AB |
692 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
693 | { | |
694 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
695 | nfs41_call_sync_prepare(task, calldata); | |
696 | } | |
697 | ||
69ab40c4 AA |
698 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
699 | { | |
700 | struct nfs41_call_sync_data *data = calldata; | |
701 | ||
14516c3a | 702 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
703 | } |
704 | ||
17280175 | 705 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 706 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 707 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
708 | }; |
709 | ||
17280175 | 710 | static const struct rpc_call_ops nfs41_call_priv_sync_ops = { |
b257957e AB |
711 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, |
712 | .rpc_call_done = nfs41_call_sync_done, | |
713 | }; | |
714 | ||
7c513058 BS |
715 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
716 | struct nfs_server *server, | |
ce5039c1 AA |
717 | struct rpc_message *msg, |
718 | struct nfs4_sequence_args *args, | |
719 | struct nfs4_sequence_res *res, | |
b257957e | 720 | int privileged) |
ce5039c1 AA |
721 | { |
722 | int ret; | |
723 | struct rpc_task *task; | |
724 | struct nfs41_call_sync_data data = { | |
035168ab | 725 | .seq_server = server, |
ce5039c1 AA |
726 | .seq_args = args, |
727 | .seq_res = res, | |
ce5039c1 AA |
728 | }; |
729 | struct rpc_task_setup task_setup = { | |
7c513058 | 730 | .rpc_client = clnt, |
ce5039c1 AA |
731 | .rpc_message = msg, |
732 | .callback_ops = &nfs41_call_sync_ops, | |
733 | .callback_data = &data | |
734 | }; | |
735 | ||
b257957e AB |
736 | if (privileged) |
737 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
738 | task = rpc_run_task(&task_setup); |
739 | if (IS_ERR(task)) | |
740 | ret = PTR_ERR(task); | |
741 | else { | |
742 | ret = task->tk_status; | |
743 | rpc_put_task(task); | |
744 | } | |
745 | return ret; | |
746 | } | |
747 | ||
7c513058 BS |
748 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
749 | struct nfs_server *server, | |
cccef3b9 AA |
750 | struct rpc_message *msg, |
751 | struct nfs4_sequence_args *args, | |
752 | struct nfs4_sequence_res *res, | |
753 | int cache_reply) | |
754 | { | |
9d12b216 TM |
755 | nfs41_init_sequence(args, res, cache_reply); |
756 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); | |
cccef3b9 AA |
757 | } |
758 | ||
df896455 | 759 | #else |
9d12b216 TM |
760 | static inline |
761 | void nfs41_init_sequence(struct nfs4_sequence_args *args, | |
762 | struct nfs4_sequence_res *res, int cache_reply) | |
763 | { | |
764 | } | |
765 | ||
14516c3a TM |
766 | static int nfs4_sequence_done(struct rpc_task *task, |
767 | struct nfs4_sequence_res *res) | |
df896455 | 768 | { |
14516c3a | 769 | return 1; |
df896455 | 770 | } |
cccef3b9 AA |
771 | #endif /* CONFIG_NFS_V4_1 */ |
772 | ||
7c513058 BS |
773 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
774 | struct nfs_server *server, | |
cccef3b9 AA |
775 | struct rpc_message *msg, |
776 | struct nfs4_sequence_args *args, | |
777 | struct nfs4_sequence_res *res, | |
778 | int cache_reply) | |
779 | { | |
9d12b216 | 780 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 781 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
782 | } |
783 | ||
e73b83f2 | 784 | static inline |
7c513058 BS |
785 | int nfs4_call_sync(struct rpc_clnt *clnt, |
786 | struct nfs_server *server, | |
e73b83f2 BS |
787 | struct rpc_message *msg, |
788 | struct nfs4_sequence_args *args, | |
789 | struct nfs4_sequence_res *res, | |
790 | int cache_reply) | |
791 | { | |
7c513058 BS |
792 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
793 | args, res, cache_reply); | |
e73b83f2 | 794 | } |
cccef3b9 | 795 | |
38478b24 | 796 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 797 | { |
38478b24 | 798 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 799 | |
38478b24 | 800 | spin_lock(&dir->i_lock); |
359d7d1c | 801 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 802 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 803 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 804 | dir->i_version = cinfo->after; |
38478b24 | 805 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
806 | } |
807 | ||
e56e0b78 | 808 | struct nfs4_opendata { |
c6d00e63 | 809 | struct kref kref; |
e56e0b78 TM |
810 | struct nfs_openargs o_arg; |
811 | struct nfs_openres o_res; | |
cdd4e68b TM |
812 | struct nfs_open_confirmargs c_arg; |
813 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
814 | struct nfs4_string owner_name; |
815 | struct nfs4_string group_name; | |
e56e0b78 | 816 | struct nfs_fattr f_attr; |
e56e0b78 | 817 | struct dentry *dir; |
82a2c1b7 | 818 | struct dentry *dentry; |
e56e0b78 | 819 | struct nfs4_state_owner *owner; |
aac00a8d | 820 | struct nfs4_state *state; |
e56e0b78 | 821 | struct iattr attrs; |
26e976a8 | 822 | unsigned long timestamp; |
3e309914 | 823 | unsigned int rpc_done : 1; |
24ac23ab TM |
824 | int rpc_status; |
825 | int cancelled; | |
e56e0b78 TM |
826 | }; |
827 | ||
2ced46c2 TM |
828 | |
829 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
830 | { | |
831 | p->o_res.f_attr = &p->f_attr; | |
c1d51931 TM |
832 | p->o_res.seqid = p->o_arg.seqid; |
833 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
834 | p->o_res.server = p->o_arg.server; |
835 | nfs_fattr_init(&p->f_attr); | |
6926afd1 | 836 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
837 | } |
838 | ||
82a2c1b7 | 839 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 840 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
841 | const struct iattr *attrs, |
842 | gfp_t gfp_mask) | |
e56e0b78 | 843 | { |
82a2c1b7 | 844 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
845 | struct inode *dir = parent->d_inode; |
846 | struct nfs_server *server = NFS_SERVER(dir); | |
847 | struct nfs4_opendata *p; | |
848 | ||
8535b2be | 849 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
850 | if (p == NULL) |
851 | goto err; | |
8535b2be | 852 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
853 | if (p->o_arg.seqid == NULL) |
854 | goto err_free; | |
82a2c1b7 AV |
855 | nfs_sb_active(dentry->d_sb); |
856 | p->dentry = dget(dentry); | |
e56e0b78 TM |
857 | p->dir = parent; |
858 | p->owner = sp; | |
859 | atomic_inc(&sp->so_count); | |
860 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
861 | p->o_arg.open_flags = flags; |
862 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 863 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
864 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
865 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 866 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
867 | p->o_arg.server = server; |
868 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 869 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
e56e0b78 | 870 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 871 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 872 | __be32 verf[2]; |
d77d76ff | 873 | |
e56e0b78 TM |
874 | p->o_arg.u.attrs = &p->attrs; |
875 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
876 | |
877 | verf[0] = jiffies; | |
878 | verf[1] = current->pid; | |
879 | memcpy(p->o_arg.u.verifier.data, verf, | |
880 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 881 | } |
cdd4e68b TM |
882 | p->c_arg.fh = &p->o_res.fh; |
883 | p->c_arg.stateid = &p->o_res.stateid; | |
884 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 885 | nfs4_init_opendata_res(p); |
c6d00e63 | 886 | kref_init(&p->kref); |
e56e0b78 TM |
887 | return p; |
888 | err_free: | |
889 | kfree(p); | |
890 | err: | |
891 | dput(parent); | |
892 | return NULL; | |
893 | } | |
894 | ||
c6d00e63 | 895 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 896 | { |
c6d00e63 TM |
897 | struct nfs4_opendata *p = container_of(kref, |
898 | struct nfs4_opendata, kref); | |
82a2c1b7 | 899 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
900 | |
901 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
902 | if (p->state != NULL) |
903 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
904 | nfs4_put_state_owner(p->owner); |
905 | dput(p->dir); | |
82a2c1b7 AV |
906 | dput(p->dentry); |
907 | nfs_sb_deactive(sb); | |
6926afd1 | 908 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
909 | kfree(p); |
910 | } | |
911 | ||
912 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
913 | { | |
914 | if (p != NULL) | |
915 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
916 | } |
917 | ||
06f814a3 TM |
918 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
919 | { | |
06f814a3 TM |
920 | int ret; |
921 | ||
06f814a3 | 922 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
923 | return ret; |
924 | } | |
925 | ||
dc0b027d | 926 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
927 | { |
928 | int ret = 0; | |
dc0b027d | 929 | |
536e43d1 | 930 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
931 | goto out; |
932 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 933 | case FMODE_READ: |
88069f77 TM |
934 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
935 | && state->n_rdonly != 0; | |
6ee41268 TM |
936 | break; |
937 | case FMODE_WRITE: | |
88069f77 TM |
938 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
939 | && state->n_wronly != 0; | |
6ee41268 TM |
940 | break; |
941 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
942 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
943 | && state->n_rdwr != 0; | |
6ee41268 | 944 | } |
dc0b027d | 945 | out: |
6ee41268 TM |
946 | return ret; |
947 | } | |
948 | ||
dc0b027d | 949 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 950 | { |
652f89f6 TM |
951 | if (delegation == NULL) |
952 | return 0; | |
dc0b027d | 953 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 954 | return 0; |
15c831bf | 955 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 956 | return 0; |
b7391f44 | 957 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
958 | return 1; |
959 | } | |
960 | ||
dc0b027d | 961 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 962 | { |
dc0b027d | 963 | switch (fmode) { |
e7616923 TM |
964 | case FMODE_WRITE: |
965 | state->n_wronly++; | |
966 | break; | |
967 | case FMODE_READ: | |
968 | state->n_rdonly++; | |
969 | break; | |
970 | case FMODE_READ|FMODE_WRITE: | |
971 | state->n_rdwr++; | |
972 | } | |
dc0b027d | 973 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
974 | } |
975 | ||
dc0b027d | 976 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
977 | { |
978 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
979 | nfs4_stateid_copy(&state->stateid, stateid); |
980 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 981 | switch (fmode) { |
003707c7 TM |
982 | case FMODE_READ: |
983 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
984 | break; | |
985 | case FMODE_WRITE: | |
986 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
987 | break; | |
988 | case FMODE_READ|FMODE_WRITE: | |
989 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
990 | } | |
e7616923 TM |
991 | } |
992 | ||
dc0b027d | 993 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 994 | { |
8bda4e4c | 995 | write_seqlock(&state->seqlock); |
dc0b027d | 996 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 997 | write_sequnlock(&state->seqlock); |
003707c7 TM |
998 | } |
999 | ||
dc0b027d | 1000 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1001 | { |
8bda4e4c TM |
1002 | /* |
1003 | * Protect the call to nfs4_state_set_mode_locked and | |
1004 | * serialise the stateid update | |
1005 | */ | |
1006 | write_seqlock(&state->seqlock); | |
003707c7 | 1007 | if (deleg_stateid != NULL) { |
f597c537 | 1008 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1009 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1010 | } | |
1011 | if (open_stateid != NULL) | |
dc0b027d | 1012 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1013 | write_sequnlock(&state->seqlock); |
1014 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1015 | update_open_stateflags(state, fmode); |
ec073428 | 1016 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1017 | } |
1018 | ||
dc0b027d | 1019 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1020 | { |
1021 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1022 | struct nfs_delegation *deleg_cur; | |
1023 | int ret = 0; | |
1024 | ||
dc0b027d | 1025 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1026 | |
1027 | rcu_read_lock(); | |
1028 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1029 | if (deleg_cur == NULL) | |
1030 | goto no_delegation; | |
1031 | ||
1032 | spin_lock(&deleg_cur->lock); | |
1033 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 1034 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1035 | goto no_delegation_unlock; |
1036 | ||
1037 | if (delegation == NULL) | |
1038 | delegation = &deleg_cur->stateid; | |
f597c537 | 1039 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1040 | goto no_delegation_unlock; |
1041 | ||
b7391f44 | 1042 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1043 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1044 | ret = 1; |
1045 | no_delegation_unlock: | |
1046 | spin_unlock(&deleg_cur->lock); | |
1047 | no_delegation: | |
1048 | rcu_read_unlock(); | |
1049 | ||
1050 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1051 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1052 | ret = 1; |
1053 | } | |
1054 | ||
1055 | return ret; | |
1056 | } | |
1057 | ||
1058 | ||
dc0b027d | 1059 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1060 | { |
1061 | struct nfs_delegation *delegation; | |
1062 | ||
1063 | rcu_read_lock(); | |
1064 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1065 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1066 | rcu_read_unlock(); |
1067 | return; | |
1068 | } | |
1069 | rcu_read_unlock(); | |
57ec14c5 | 1070 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1071 | } |
1072 | ||
6ee41268 | 1073 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1074 | { |
1075 | struct nfs4_state *state = opendata->state; | |
1076 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1077 | struct nfs_delegation *delegation; | |
536e43d1 | 1078 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1079 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1080 | nfs4_stateid stateid; |
1081 | int ret = -EAGAIN; | |
1082 | ||
aac00a8d | 1083 | for (;;) { |
dc0b027d | 1084 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1085 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1086 | if (can_open_cached(state, fmode, open_mode)) { |
1087 | update_open_stateflags(state, fmode); | |
6ee41268 | 1088 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1089 | goto out_return_state; |
1090 | } | |
1091 | spin_unlock(&state->owner->so_lock); | |
1092 | } | |
34310430 TM |
1093 | rcu_read_lock(); |
1094 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1095 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1096 | rcu_read_unlock(); |
aac00a8d | 1097 | break; |
34310430 | 1098 | } |
aac00a8d | 1099 | /* Save the delegation */ |
f597c537 | 1100 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1101 | rcu_read_unlock(); |
af22f94a | 1102 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1103 | if (ret != 0) |
1104 | goto out; | |
1105 | ret = -EAGAIN; | |
34310430 TM |
1106 | |
1107 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1108 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1109 | goto out_return_state; |
aac00a8d | 1110 | } |
aac00a8d TM |
1111 | out: |
1112 | return ERR_PTR(ret); | |
1113 | out_return_state: | |
1114 | atomic_inc(&state->count); | |
1115 | return state; | |
1116 | } | |
1117 | ||
24ac23ab TM |
1118 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1119 | { | |
1120 | struct inode *inode; | |
1121 | struct nfs4_state *state = NULL; | |
003707c7 | 1122 | struct nfs_delegation *delegation; |
1b370bc2 | 1123 | int ret; |
24ac23ab | 1124 | |
aac00a8d | 1125 | if (!data->rpc_done) { |
6ee41268 | 1126 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1127 | goto out; |
1128 | } | |
1129 | ||
1b370bc2 | 1130 | ret = -EAGAIN; |
24ac23ab | 1131 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1132 | goto err; |
24ac23ab | 1133 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1134 | ret = PTR_ERR(inode); |
03f28e3a | 1135 | if (IS_ERR(inode)) |
1b370bc2 TM |
1136 | goto err; |
1137 | ret = -ENOMEM; | |
24ac23ab TM |
1138 | state = nfs4_get_open_state(inode, data->owner); |
1139 | if (state == NULL) | |
1b370bc2 | 1140 | goto err_put_inode; |
549d6ed5 | 1141 | if (data->o_res.delegation_type != 0) { |
4e0038b6 | 1142 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; |
549d6ed5 TM |
1143 | int delegation_flags = 0; |
1144 | ||
003707c7 TM |
1145 | rcu_read_lock(); |
1146 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1147 | if (delegation) | |
1148 | delegation_flags = delegation->flags; | |
1149 | rcu_read_unlock(); | |
652f89f6 TM |
1150 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { |
1151 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1152 | "returning a delegation for " | |
1153 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
4e0038b6 | 1154 | clp->cl_hostname); |
652f89f6 | 1155 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1156 | nfs_inode_set_delegation(state->inode, |
1157 | data->owner->so_cred, | |
1158 | &data->o_res); | |
1159 | else | |
1160 | nfs_inode_reclaim_delegation(state->inode, | |
1161 | data->owner->so_cred, | |
1162 | &data->o_res); | |
1163 | } | |
34310430 TM |
1164 | |
1165 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1166 | data->o_arg.fmode); |
24ac23ab | 1167 | iput(inode); |
aac00a8d | 1168 | out: |
24ac23ab | 1169 | return state; |
1b370bc2 TM |
1170 | err_put_inode: |
1171 | iput(inode); | |
1172 | err: | |
1173 | return ERR_PTR(ret); | |
24ac23ab TM |
1174 | } |
1175 | ||
864472e9 TM |
1176 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1177 | { | |
1178 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1179 | struct nfs_open_context *ctx; | |
1180 | ||
1181 | spin_lock(&state->inode->i_lock); | |
1182 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1183 | if (ctx->state != state) | |
1184 | continue; | |
1185 | get_nfs_open_context(ctx); | |
1186 | spin_unlock(&state->inode->i_lock); | |
1187 | return ctx; | |
1188 | } | |
1189 | spin_unlock(&state->inode->i_lock); | |
1190 | return ERR_PTR(-ENOENT); | |
1191 | } | |
1192 | ||
6f220ed5 TM |
1193 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1194 | { | |
1195 | struct nfs4_opendata *opendata; | |
1196 | ||
3d4ff43d | 1197 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1198 | if (opendata == NULL) |
1199 | return ERR_PTR(-ENOMEM); | |
1200 | opendata->state = state; | |
1201 | atomic_inc(&state->count); | |
1202 | return opendata; | |
1203 | } | |
1204 | ||
dc0b027d | 1205 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1206 | { |
2ced46c2 | 1207 | struct nfs4_state *newstate; |
864472e9 TM |
1208 | int ret; |
1209 | ||
dc0b027d TM |
1210 | opendata->o_arg.open_flags = 0; |
1211 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1212 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1213 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1214 | nfs4_init_opendata_res(opendata); | |
b257957e | 1215 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1216 | if (ret != 0) |
1217 | return ret; | |
2ced46c2 | 1218 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1219 | if (IS_ERR(newstate)) |
1220 | return PTR_ERR(newstate); | |
643168c2 | 1221 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1222 | *res = newstate; |
864472e9 TM |
1223 | return 0; |
1224 | } | |
1225 | ||
1226 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1227 | { | |
864472e9 | 1228 | struct nfs4_state *newstate; |
864472e9 TM |
1229 | int ret; |
1230 | ||
1231 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1232 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1233 | smp_rmb(); |
1234 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1235 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1236 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1237 | if (ret != 0) |
1238 | return ret; | |
2ced46c2 TM |
1239 | if (newstate != state) |
1240 | return -ESTALE; | |
864472e9 TM |
1241 | } |
1242 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1243 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1244 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1245 | if (ret != 0) |
1246 | return ret; | |
2ced46c2 TM |
1247 | if (newstate != state) |
1248 | return -ESTALE; | |
864472e9 TM |
1249 | } |
1250 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1251 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1252 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1253 | if (ret != 0) |
1254 | return ret; | |
2ced46c2 TM |
1255 | if (newstate != state) |
1256 | return -ESTALE; | |
864472e9 | 1257 | } |
1ac7e2fd TM |
1258 | /* |
1259 | * We may have performed cached opens for all three recoveries. | |
1260 | * Check if we need to update the current stateid. | |
1261 | */ | |
1262 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1263 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1264 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1265 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1266 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1267 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1268 | } |
864472e9 TM |
1269 | return 0; |
1270 | } | |
1271 | ||
1da177e4 LT |
1272 | /* |
1273 | * OPEN_RECLAIM: | |
1274 | * reclaim state on the server after a reboot. | |
1da177e4 | 1275 | */ |
539cd03a | 1276 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1277 | { |
1ac7e2fd | 1278 | struct nfs_delegation *delegation; |
864472e9 | 1279 | struct nfs4_opendata *opendata; |
dc0b027d | 1280 | fmode_t delegation_type = 0; |
1da177e4 LT |
1281 | int status; |
1282 | ||
6f220ed5 TM |
1283 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1284 | if (IS_ERR(opendata)) | |
1285 | return PTR_ERR(opendata); | |
864472e9 TM |
1286 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1287 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1288 | rcu_read_lock(); |
1289 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1290 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1291 | delegation_type = delegation->type; |
1ac7e2fd | 1292 | rcu_read_unlock(); |
864472e9 TM |
1293 | opendata->o_arg.u.delegation_type = delegation_type; |
1294 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1295 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1296 | return status; |
1297 | } | |
1298 | ||
539cd03a | 1299 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1300 | { |
1301 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1302 | struct nfs4_exception exception = { }; | |
1303 | int err; | |
1304 | do { | |
539cd03a | 1305 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1306 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1307 | break; |
1308 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1309 | } while (exception.retry); |
1310 | return err; | |
1311 | } | |
1312 | ||
864472e9 TM |
1313 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1314 | { | |
1315 | struct nfs_open_context *ctx; | |
1316 | int ret; | |
1317 | ||
1318 | ctx = nfs4_state_find_open_context(state); | |
1319 | if (IS_ERR(ctx)) | |
1320 | return PTR_ERR(ctx); | |
539cd03a | 1321 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1322 | put_nfs_open_context(ctx); |
1323 | return ret; | |
1324 | } | |
1325 | ||
13437e12 | 1326 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1327 | { |
e56e0b78 | 1328 | struct nfs4_opendata *opendata; |
864472e9 | 1329 | int ret; |
1da177e4 | 1330 | |
6f220ed5 TM |
1331 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1332 | if (IS_ERR(opendata)) | |
1333 | return PTR_ERR(opendata); | |
e56e0b78 | 1334 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1335 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1336 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1337 | nfs4_opendata_put(opendata); |
864472e9 | 1338 | return ret; |
1da177e4 LT |
1339 | } |
1340 | ||
13437e12 | 1341 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1342 | { |
1343 | struct nfs4_exception exception = { }; | |
539cd03a | 1344 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1345 | int err; |
1346 | do { | |
13437e12 | 1347 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1348 | switch (err) { |
1349 | case 0: | |
965b5d67 TM |
1350 | case -ENOENT: |
1351 | case -ESTALE: | |
1352 | goto out; | |
bcfa49f6 RL |
1353 | case -NFS4ERR_BADSESSION: |
1354 | case -NFS4ERR_BADSLOT: | |
1355 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1356 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1357 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 1358 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
bcfa49f6 | 1359 | goto out; |
1da177e4 LT |
1360 | case -NFS4ERR_STALE_CLIENTID: |
1361 | case -NFS4ERR_STALE_STATEID: | |
1362 | case -NFS4ERR_EXPIRED: | |
1363 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1364 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1365 | goto out; |
1366 | case -ERESTARTSYS: | |
1367 | /* | |
1368 | * The show must go on: exit, but mark the | |
1369 | * stateid as needing recovery. | |
1370 | */ | |
a1d0b5ee | 1371 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1372 | case -NFS4ERR_ADMIN_REVOKED: |
1373 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1374 | nfs_inode_find_state_and_recover(state->inode, |
1375 | stateid); | |
0400a6b0 | 1376 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1377 | case -EKEYEXPIRED: |
1378 | /* | |
1379 | * User RPCSEC_GSS context has expired. | |
1380 | * We cannot recover this stateid now, so | |
1381 | * skip it and allow recovery thread to | |
1382 | * proceed. | |
1383 | */ | |
965b5d67 TM |
1384 | case -ENOMEM: |
1385 | err = 0; | |
1386 | goto out; | |
1da177e4 LT |
1387 | } |
1388 | err = nfs4_handle_exception(server, err, &exception); | |
1389 | } while (exception.retry); | |
965b5d67 | 1390 | out: |
1da177e4 LT |
1391 | return err; |
1392 | } | |
1393 | ||
cdd4e68b TM |
1394 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1395 | { | |
1396 | struct nfs4_opendata *data = calldata; | |
1397 | ||
1398 | data->rpc_status = task->tk_status; | |
26e976a8 | 1399 | if (data->rpc_status == 0) { |
f597c537 | 1400 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1401 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1402 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1403 | data->rpc_done = 1; |
26e976a8 | 1404 | } |
cdd4e68b TM |
1405 | } |
1406 | ||
1407 | static void nfs4_open_confirm_release(void *calldata) | |
1408 | { | |
1409 | struct nfs4_opendata *data = calldata; | |
1410 | struct nfs4_state *state = NULL; | |
1411 | ||
1412 | /* If this request hasn't been cancelled, do nothing */ | |
1413 | if (data->cancelled == 0) | |
1414 | goto out_free; | |
1415 | /* In case of error, no cleanup! */ | |
3e309914 | 1416 | if (!data->rpc_done) |
cdd4e68b | 1417 | goto out_free; |
cdd4e68b | 1418 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1419 | if (!IS_ERR(state)) |
643168c2 | 1420 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1421 | out_free: |
c6d00e63 | 1422 | nfs4_opendata_put(data); |
cdd4e68b TM |
1423 | } |
1424 | ||
1425 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1426 | .rpc_call_done = nfs4_open_confirm_done, |
1427 | .rpc_release = nfs4_open_confirm_release, | |
1428 | }; | |
1429 | ||
1430 | /* | |
1431 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1432 | */ | |
1433 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1434 | { | |
1435 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1436 | struct rpc_task *task; | |
5138fde0 TM |
1437 | struct rpc_message msg = { |
1438 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1439 | .rpc_argp = &data->c_arg, | |
1440 | .rpc_resp = &data->c_res, | |
1441 | .rpc_cred = data->owner->so_cred, | |
1442 | }; | |
c970aa85 TM |
1443 | struct rpc_task_setup task_setup_data = { |
1444 | .rpc_client = server->client, | |
5138fde0 | 1445 | .rpc_message = &msg, |
c970aa85 TM |
1446 | .callback_ops = &nfs4_open_confirm_ops, |
1447 | .callback_data = data, | |
101070ca | 1448 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1449 | .flags = RPC_TASK_ASYNC, |
1450 | }; | |
1da177e4 LT |
1451 | int status; |
1452 | ||
c6d00e63 | 1453 | kref_get(&data->kref); |
3e309914 TM |
1454 | data->rpc_done = 0; |
1455 | data->rpc_status = 0; | |
5138fde0 | 1456 | data->timestamp = jiffies; |
c970aa85 | 1457 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1458 | if (IS_ERR(task)) |
cdd4e68b | 1459 | return PTR_ERR(task); |
cdd4e68b TM |
1460 | status = nfs4_wait_for_completion_rpc_task(task); |
1461 | if (status != 0) { | |
1462 | data->cancelled = 1; | |
1463 | smp_wmb(); | |
1464 | } else | |
1465 | status = data->rpc_status; | |
e6b3c4db | 1466 | rpc_put_task(task); |
1da177e4 LT |
1467 | return status; |
1468 | } | |
1469 | ||
24ac23ab | 1470 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1471 | { |
24ac23ab TM |
1472 | struct nfs4_opendata *data = calldata; |
1473 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1474 | |
24ac23ab TM |
1475 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1476 | return; | |
aac00a8d TM |
1477 | /* |
1478 | * Check if we still need to send an OPEN call, or if we can use | |
1479 | * a delegation instead. | |
1480 | */ | |
1481 | if (data->state != NULL) { | |
1482 | struct nfs_delegation *delegation; | |
1483 | ||
dc0b027d | 1484 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1485 | goto out_no_action; |
aac00a8d TM |
1486 | rcu_read_lock(); |
1487 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1488 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1489 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1490 | goto unlock_no_action; | |
aac00a8d TM |
1491 | rcu_read_unlock(); |
1492 | } | |
95b72eb0 | 1493 | /* Update client id. */ |
1f0e890d | 1494 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1495 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1496 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1497 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1498 | } | |
26e976a8 | 1499 | data->timestamp = jiffies; |
035168ab | 1500 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1501 | &data->o_arg.seq_args, |
9d12b216 | 1502 | &data->o_res.seq_res, task)) |
d898528c | 1503 | return; |
5138fde0 | 1504 | rpc_call_start(task); |
6ee41268 | 1505 | return; |
652f89f6 TM |
1506 | unlock_no_action: |
1507 | rcu_read_unlock(); | |
6ee41268 TM |
1508 | out_no_action: |
1509 | task->tk_action = NULL; | |
1510 | ||
24ac23ab | 1511 | } |
1da177e4 | 1512 | |
b257957e AB |
1513 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1514 | { | |
1515 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1516 | nfs4_open_prepare(task, calldata); | |
1517 | } | |
1518 | ||
24ac23ab TM |
1519 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1520 | { | |
1521 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1522 | |
24ac23ab | 1523 | data->rpc_status = task->tk_status; |
d898528c | 1524 | |
14516c3a TM |
1525 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1526 | return; | |
d898528c | 1527 | |
24ac23ab TM |
1528 | if (task->tk_status == 0) { |
1529 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1530 | case S_IFREG: |
1531 | break; | |
1532 | case S_IFLNK: | |
24ac23ab | 1533 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1534 | break; |
1535 | case S_IFDIR: | |
24ac23ab | 1536 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1537 | break; |
1538 | default: | |
24ac23ab | 1539 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1540 | } |
26e976a8 | 1541 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1542 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1543 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1544 | } |
3e309914 | 1545 | data->rpc_done = 1; |
24ac23ab | 1546 | } |
6f926b5b | 1547 | |
24ac23ab TM |
1548 | static void nfs4_open_release(void *calldata) |
1549 | { | |
1550 | struct nfs4_opendata *data = calldata; | |
1551 | struct nfs4_state *state = NULL; | |
1552 | ||
1553 | /* If this request hasn't been cancelled, do nothing */ | |
1554 | if (data->cancelled == 0) | |
1555 | goto out_free; | |
1556 | /* In case of error, no cleanup! */ | |
3e309914 | 1557 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1558 | goto out_free; |
1559 | /* In case we need an open_confirm, no cleanup! */ | |
1560 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1561 | goto out_free; | |
24ac23ab | 1562 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1563 | if (!IS_ERR(state)) |
643168c2 | 1564 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1565 | out_free: |
c6d00e63 | 1566 | nfs4_opendata_put(data); |
24ac23ab TM |
1567 | } |
1568 | ||
1569 | static const struct rpc_call_ops nfs4_open_ops = { | |
1570 | .rpc_call_prepare = nfs4_open_prepare, | |
1571 | .rpc_call_done = nfs4_open_done, | |
1572 | .rpc_release = nfs4_open_release, | |
1573 | }; | |
1574 | ||
b257957e AB |
1575 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1576 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1577 | .rpc_call_done = nfs4_open_done, | |
1578 | .rpc_release = nfs4_open_release, | |
1579 | }; | |
1580 | ||
1581 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1582 | { |
1583 | struct inode *dir = data->dir->d_inode; | |
1584 | struct nfs_server *server = NFS_SERVER(dir); | |
1585 | struct nfs_openargs *o_arg = &data->o_arg; | |
1586 | struct nfs_openres *o_res = &data->o_res; | |
1587 | struct rpc_task *task; | |
5138fde0 TM |
1588 | struct rpc_message msg = { |
1589 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1590 | .rpc_argp = o_arg, | |
1591 | .rpc_resp = o_res, | |
1592 | .rpc_cred = data->owner->so_cred, | |
1593 | }; | |
c970aa85 TM |
1594 | struct rpc_task_setup task_setup_data = { |
1595 | .rpc_client = server->client, | |
5138fde0 | 1596 | .rpc_message = &msg, |
c970aa85 TM |
1597 | .callback_ops = &nfs4_open_ops, |
1598 | .callback_data = data, | |
101070ca | 1599 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1600 | .flags = RPC_TASK_ASYNC, |
1601 | }; | |
24ac23ab TM |
1602 | int status; |
1603 | ||
9d12b216 | 1604 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1605 | kref_get(&data->kref); |
3e309914 TM |
1606 | data->rpc_done = 0; |
1607 | data->rpc_status = 0; | |
2ced46c2 | 1608 | data->cancelled = 0; |
b257957e AB |
1609 | if (isrecover) |
1610 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1611 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1612 | if (IS_ERR(task)) |
1613 | return PTR_ERR(task); | |
1614 | status = nfs4_wait_for_completion_rpc_task(task); | |
1615 | if (status != 0) { | |
1616 | data->cancelled = 1; | |
1617 | smp_wmb(); | |
1618 | } else | |
1619 | status = data->rpc_status; | |
1620 | rpc_put_task(task); | |
1621 | ||
1622 | return status; | |
1623 | } | |
1624 | ||
1625 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1626 | { | |
1627 | struct inode *dir = data->dir->d_inode; | |
1628 | struct nfs_openres *o_res = &data->o_res; | |
1629 | int status; | |
1630 | ||
1631 | status = nfs4_run_open_task(data, 1); | |
1632 | if (status != 0 || !data->rpc_done) | |
1633 | return status; | |
1634 | ||
6926afd1 TM |
1635 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1636 | ||
b257957e AB |
1637 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1638 | status = _nfs4_proc_open_confirm(data); | |
1639 | if (status != 0) | |
1640 | return status; | |
1641 | } | |
1642 | ||
1643 | return status; | |
1644 | } | |
1645 | ||
1646 | /* | |
1647 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1648 | */ | |
1649 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1650 | { | |
1651 | struct inode *dir = data->dir->d_inode; | |
1652 | struct nfs_server *server = NFS_SERVER(dir); | |
1653 | struct nfs_openargs *o_arg = &data->o_arg; | |
1654 | struct nfs_openres *o_res = &data->o_res; | |
1655 | int status; | |
1656 | ||
1657 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1658 | if (!data->rpc_done) |
1659 | return status; | |
1660 | if (status != 0) { | |
1661 | if (status == -NFS4ERR_BADNAME && | |
1662 | !(o_arg->open_flags & O_CREAT)) | |
1663 | return -ENOENT; | |
24ac23ab | 1664 | return status; |
08ef7bd3 | 1665 | } |
24ac23ab | 1666 | |
6926afd1 TM |
1667 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1668 | ||
90ff0c54 | 1669 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1670 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1671 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1672 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1673 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1674 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1675 | if (status != 0) |
24ac23ab | 1676 | return status; |
1da177e4 LT |
1677 | } |
1678 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1679 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1680 | return 0; |
1da177e4 LT |
1681 | } |
1682 | ||
d83217c1 | 1683 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1684 | { |
a78cb57a | 1685 | unsigned int loop; |
6b30954e | 1686 | int ret; |
58d9714a | 1687 | |
a78cb57a | 1688 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1689 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1690 | if (ret != 0) |
a78cb57a | 1691 | break; |
e598d843 TM |
1692 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1693 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1694 | break; |
0400a6b0 | 1695 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1696 | ret = -EIO; |
6b30954e | 1697 | } |
a78cb57a | 1698 | return ret; |
58d9714a TM |
1699 | } |
1700 | ||
d83217c1 AA |
1701 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1702 | { | |
1703 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1704 | } | |
1705 | ||
1da177e4 LT |
1706 | /* |
1707 | * OPEN_EXPIRED: | |
1708 | * reclaim state on the server after a network partition. | |
1709 | * Assumes caller holds the appropriate lock | |
1710 | */ | |
539cd03a | 1711 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1712 | { |
e56e0b78 | 1713 | struct nfs4_opendata *opendata; |
864472e9 | 1714 | int ret; |
1da177e4 | 1715 | |
6f220ed5 TM |
1716 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1717 | if (IS_ERR(opendata)) | |
1718 | return PTR_ERR(opendata); | |
864472e9 | 1719 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1720 | if (ret == -ESTALE) |
3d4ff43d | 1721 | d_drop(ctx->dentry); |
c6d00e63 | 1722 | nfs4_opendata_put(opendata); |
864472e9 | 1723 | return ret; |
1da177e4 LT |
1724 | } |
1725 | ||
a9ed2e25 | 1726 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1727 | { |
539cd03a | 1728 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1729 | struct nfs4_exception exception = { }; |
1730 | int err; | |
1731 | ||
1732 | do { | |
539cd03a | 1733 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1734 | switch (err) { |
1735 | default: | |
1736 | goto out; | |
1737 | case -NFS4ERR_GRACE: | |
1738 | case -NFS4ERR_DELAY: | |
1739 | nfs4_handle_exception(server, err, &exception); | |
1740 | err = 0; | |
1741 | } | |
202b50dc | 1742 | } while (exception.retry); |
a9ed2e25 | 1743 | out: |
202b50dc TM |
1744 | return err; |
1745 | } | |
1746 | ||
1da177e4 LT |
1747 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1748 | { | |
1da177e4 | 1749 | struct nfs_open_context *ctx; |
864472e9 | 1750 | int ret; |
1da177e4 | 1751 | |
864472e9 TM |
1752 | ctx = nfs4_state_find_open_context(state); |
1753 | if (IS_ERR(ctx)) | |
1754 | return PTR_ERR(ctx); | |
539cd03a | 1755 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1756 | put_nfs_open_context(ctx); |
1757 | return ret; | |
1da177e4 LT |
1758 | } |
1759 | ||
f062eb6c | 1760 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1761 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1762 | { |
f062eb6c | 1763 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd CL |
1764 | nfs4_stateid *stateid = &state->stateid; |
1765 | int status; | |
1766 | ||
1767 | /* If a state reset has been done, test_stateid is unneeded */ | |
1768 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1769 | return; | |
1770 | ||
1771 | status = nfs41_test_stateid(server, stateid); | |
1772 | if (status != NFS_OK) { | |
1773 | /* Free the stateid unless the server explicitly | |
1774 | * informs us the stateid is unrecognized. */ | |
1775 | if (status != -NFS4ERR_BAD_STATEID) | |
1776 | nfs41_free_stateid(server, stateid); | |
1777 | ||
1778 | clear_bit(NFS_DELEGATED_STATE, &state->flags); | |
1779 | } | |
1780 | } | |
1781 | ||
1782 | /** | |
1783 | * nfs41_check_open_stateid - possibly free an open stateid | |
1784 | * | |
1785 | * @state: NFSv4 state for an inode | |
1786 | * | |
1787 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1788 | * Otherwise a negative NFS4ERR value is returned. | |
1789 | */ | |
1790 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1791 | { | |
1792 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1793 | nfs4_stateid *stateid = &state->stateid; | |
1794 | int status; | |
1795 | ||
1796 | /* If a state reset has been done, test_stateid is unneeded */ | |
1797 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1798 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1799 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1800 | return -NFS4ERR_BAD_STATEID; | |
1801 | ||
1802 | status = nfs41_test_stateid(server, stateid); | |
1803 | if (status != NFS_OK) { | |
1804 | /* Free the stateid unless the server explicitly | |
1805 | * informs us the stateid is unrecognized. */ | |
1806 | if (status != -NFS4ERR_BAD_STATEID) | |
1807 | nfs41_free_stateid(server, stateid); | |
1808 | ||
1809 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1810 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1811 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
b01dd1d8 BS |
1812 | } |
1813 | return status; | |
1814 | } | |
1815 | ||
1816 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1817 | { | |
eb64cf96 | 1818 | int status; |
b01dd1d8 | 1819 | |
3e60ffdd CL |
1820 | nfs41_clear_delegation_stateid(state); |
1821 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
1822 | if (status != NFS_OK) |
1823 | status = nfs4_open_expired(sp, state); | |
1824 | return status; | |
f062eb6c BS |
1825 | } |
1826 | #endif | |
1827 | ||
aa53ed54 JL |
1828 | /* |
1829 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1830 | * fields corresponding to attributes that were used to store the verifier. | |
1831 | * Make sure we clobber those fields in the later setattr call | |
1832 | */ | |
1833 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1834 | { | |
1835 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1836 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1837 | sattr->ia_valid |= ATTR_ATIME; | |
1838 | ||
1839 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1840 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1841 | sattr->ia_valid |= ATTR_MTIME; | |
1842 | } | |
1843 | ||
1da177e4 | 1844 | /* |
24ac23ab | 1845 | * Returns a referenced nfs4_state |
1da177e4 | 1846 | */ |
82be417a AA |
1847 | static int _nfs4_do_open(struct inode *dir, |
1848 | struct dentry *dentry, | |
1849 | fmode_t fmode, | |
1850 | int flags, | |
1851 | struct iattr *sattr, | |
1852 | struct rpc_cred *cred, | |
1853 | struct nfs4_state **res, | |
1854 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1855 | { |
1856 | struct nfs4_state_owner *sp; | |
1857 | struct nfs4_state *state = NULL; | |
1858 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1859 | struct nfs4_opendata *opendata; |
aac00a8d | 1860 | int status; |
1da177e4 LT |
1861 | |
1862 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1863 | status = -ENOMEM; |
d1e284d5 TM |
1864 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1865 | if (sp == NULL) { | |
1da177e4 LT |
1866 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1867 | goto out_err; | |
1868 | } | |
58d9714a TM |
1869 | status = nfs4_recover_expired_lease(server); |
1870 | if (status != 0) | |
b4454fe1 | 1871 | goto err_put_state_owner; |
82a2c1b7 AV |
1872 | if (dentry->d_inode != NULL) |
1873 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1874 | status = -ENOMEM; |
82a2c1b7 | 1875 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1876 | if (opendata == NULL) |
95d35cb4 | 1877 | goto err_put_state_owner; |
1da177e4 | 1878 | |
82be417a AA |
1879 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
1880 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
1881 | if (!opendata->f_attr.mdsthreshold) | |
1882 | goto err_opendata_put; | |
1549210f | 1883 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 1884 | } |
82a2c1b7 AV |
1885 | if (dentry->d_inode != NULL) |
1886 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1887 | |
24ac23ab | 1888 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1889 | if (status != 0) |
c6d00e63 | 1890 | goto err_opendata_put; |
1da177e4 | 1891 | |
24ac23ab | 1892 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1893 | status = PTR_ERR(state); |
1894 | if (IS_ERR(state)) | |
c6d00e63 | 1895 | goto err_opendata_put; |
0df5dd4a | 1896 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1897 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1898 | |
1899 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1900 | nfs4_exclusive_attrset(opendata, sattr); | |
1901 | ||
1902 | nfs_fattr_init(opendata->o_res.f_attr); | |
1903 | status = nfs4_do_setattr(state->inode, cred, | |
1904 | opendata->o_res.f_attr, sattr, | |
1905 | state); | |
1906 | if (status == 0) | |
1907 | nfs_setattr_update_inode(state->inode, sattr); | |
1908 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1909 | } | |
82be417a AA |
1910 | |
1911 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
1912 | *ctx_th = opendata->f_attr.mdsthreshold; | |
1913 | else | |
1914 | kfree(opendata->f_attr.mdsthreshold); | |
1915 | opendata->f_attr.mdsthreshold = NULL; | |
1916 | ||
c6d00e63 | 1917 | nfs4_opendata_put(opendata); |
1da177e4 | 1918 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1919 | *res = state; |
1920 | return 0; | |
c6d00e63 | 1921 | err_opendata_put: |
82be417a | 1922 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 1923 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
1924 | err_put_state_owner: |
1925 | nfs4_put_state_owner(sp); | |
1da177e4 | 1926 | out_err: |
1da177e4 LT |
1927 | *res = NULL; |
1928 | return status; | |
1929 | } | |
1930 | ||
1931 | ||
82be417a AA |
1932 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
1933 | struct dentry *dentry, | |
1934 | fmode_t fmode, | |
1935 | int flags, | |
1936 | struct iattr *sattr, | |
1937 | struct rpc_cred *cred, | |
1938 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1939 | { |
1940 | struct nfs4_exception exception = { }; | |
1941 | struct nfs4_state *res; | |
1942 | int status; | |
1943 | ||
2d0dbc6a | 1944 | fmode &= FMODE_READ|FMODE_WRITE; |
1da177e4 | 1945 | do { |
82be417a AA |
1946 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
1947 | &res, ctx_th); | |
1da177e4 LT |
1948 | if (status == 0) |
1949 | break; | |
1950 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1951 | * book-keeping w.r.t. state-changing operations | |
1952 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1953 | * It is actually a sign of a bug on the client or on the server. | |
1954 | * | |
1955 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1956 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1957 | * have unhashed the old state_owner for us, and that we can |
1958 | * therefore safely retry using a new one. We should still warn | |
1959 | * the user though... | |
1960 | */ | |
1961 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 1962 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
1963 | " returned a bad sequence-id error!\n", |
1964 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1965 | exception.retry = 1; |
1966 | continue; | |
1967 | } | |
550f5747 TM |
1968 | /* |
1969 | * BAD_STATEID on OPEN means that the server cancelled our | |
1970 | * state before it received the OPEN_CONFIRM. | |
1971 | * Recover by retrying the request as per the discussion | |
1972 | * on Page 181 of RFC3530. | |
1973 | */ | |
1974 | if (status == -NFS4ERR_BAD_STATEID) { | |
1975 | exception.retry = 1; | |
1976 | continue; | |
1977 | } | |
aac00a8d TM |
1978 | if (status == -EAGAIN) { |
1979 | /* We must have found a delegation */ | |
1980 | exception.retry = 1; | |
1981 | continue; | |
1982 | } | |
1da177e4 LT |
1983 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1984 | status, &exception)); | |
1985 | } while (exception.retry); | |
1986 | return res; | |
1987 | } | |
1988 | ||
659bfcd6 TM |
1989 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1990 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1991 | struct nfs4_state *state) | |
1da177e4 | 1992 | { |
3e4f6290 | 1993 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1994 | struct nfs_setattrargs arg = { |
3e4f6290 | 1995 | .fh = NFS_FH(inode), |
1da177e4 LT |
1996 | .iap = sattr, |
1997 | .server = server, | |
1998 | .bitmask = server->attr_bitmask, | |
1999 | }; | |
2000 | struct nfs_setattrres res = { | |
2001 | .fattr = fattr, | |
2002 | .server = server, | |
2003 | }; | |
2004 | struct rpc_message msg = { | |
659bfcd6 TM |
2005 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2006 | .rpc_argp = &arg, | |
2007 | .rpc_resp = &res, | |
2008 | .rpc_cred = cred, | |
1da177e4 | 2009 | }; |
26e976a8 | 2010 | unsigned long timestamp = jiffies; |
65e4308d | 2011 | int status; |
1da177e4 | 2012 | |
0e574af1 | 2013 | nfs_fattr_init(fattr); |
1da177e4 | 2014 | |
4fc8796d TM |
2015 | if (state != NULL) { |
2016 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
2017 | current->files, current->tgid); | |
2018 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, | |
2019 | FMODE_WRITE)) { | |
3e4f6290 | 2020 | /* Use that stateid */ |
08e9eac4 | 2021 | } else |
f597c537 | 2022 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2023 | |
7c513058 | 2024 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2025 | if (status == 0 && state != NULL) |
2026 | renew_lease(server, timestamp); | |
65e4308d | 2027 | return status; |
1da177e4 LT |
2028 | } |
2029 | ||
659bfcd6 TM |
2030 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2031 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2032 | struct nfs4_state *state) | |
1da177e4 | 2033 | { |
3e4f6290 | 2034 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2035 | struct nfs4_exception exception = { |
2036 | .state = state, | |
3114ea7a | 2037 | .inode = inode, |
a1d0b5ee | 2038 | }; |
1da177e4 LT |
2039 | int err; |
2040 | do { | |
451146be TM |
2041 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2042 | switch (err) { | |
2043 | case -NFS4ERR_OPENMODE: | |
2044 | if (state && !(state->state & FMODE_WRITE)) { | |
2045 | err = -EBADF; | |
2046 | if (sattr->ia_valid & ATTR_OPEN) | |
2047 | err = -EACCES; | |
2048 | goto out; | |
2049 | } | |
2050 | } | |
2051 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2052 | } while (exception.retry); |
451146be | 2053 | out: |
1da177e4 LT |
2054 | return err; |
2055 | } | |
2056 | ||
2057 | struct nfs4_closedata { | |
2058 | struct inode *inode; | |
2059 | struct nfs4_state *state; | |
2060 | struct nfs_closeargs arg; | |
2061 | struct nfs_closeres res; | |
516a6af6 | 2062 | struct nfs_fattr fattr; |
26e976a8 | 2063 | unsigned long timestamp; |
f7e8917a FI |
2064 | bool roc; |
2065 | u32 roc_barrier; | |
1da177e4 LT |
2066 | }; |
2067 | ||
963d8fe5 | 2068 | static void nfs4_free_closedata(void *data) |
9512135d | 2069 | { |
963d8fe5 TM |
2070 | struct nfs4_closedata *calldata = data; |
2071 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2072 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2073 | |
f7e8917a FI |
2074 | if (calldata->roc) |
2075 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2076 | nfs4_put_open_state(calldata->state); |
2077 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2078 | nfs4_put_state_owner(sp); |
643168c2 | 2079 | nfs_sb_deactive(sb); |
9512135d TM |
2080 | kfree(calldata); |
2081 | } | |
2082 | ||
88069f77 TM |
2083 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2084 | fmode_t fmode) | |
2085 | { | |
2086 | spin_lock(&state->owner->so_lock); | |
2087 | if (!(fmode & FMODE_READ)) | |
2088 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2089 | if (!(fmode & FMODE_WRITE)) | |
2090 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2091 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2092 | spin_unlock(&state->owner->so_lock); | |
2093 | } | |
2094 | ||
963d8fe5 | 2095 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2096 | { |
963d8fe5 | 2097 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2098 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2099 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2100 | ||
a3ca5651 | 2101 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2102 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2103 | return; | |
1da177e4 LT |
2104 | /* hmm. we are done with the inode, and in the process of freeing |
2105 | * the state_owner. we keep this around to process errors | |
2106 | */ | |
1da177e4 LT |
2107 | switch (task->tk_status) { |
2108 | case 0: | |
f7e8917a FI |
2109 | if (calldata->roc) |
2110 | pnfs_roc_set_barrier(state->inode, | |
2111 | calldata->roc_barrier); | |
45328c35 | 2112 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2113 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2114 | nfs4_close_clear_stateid_flags(state, |
2115 | calldata->arg.fmode); | |
1da177e4 LT |
2116 | break; |
2117 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2118 | case -NFS4ERR_OLD_STATEID: |
2119 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2120 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2121 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2122 | break; |
1da177e4 | 2123 | default: |
72211dbe TM |
2124 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2125 | rpc_restart_call_prepare(task); | |
1da177e4 | 2126 | } |
72211dbe | 2127 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2128 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2129 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2130 | } |
2131 | ||
4ce70ada | 2132 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2133 | { |
4ce70ada | 2134 | struct nfs4_closedata *calldata = data; |
9512135d | 2135 | struct nfs4_state *state = calldata->state; |
88069f77 | 2136 | int call_close = 0; |
9512135d | 2137 | |
a3ca5651 | 2138 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2139 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2140 | return; |
003707c7 | 2141 | |
88069f77 TM |
2142 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2143 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2144 | spin_lock(&state->owner->so_lock); |
003707c7 | 2145 | /* Calculate the change in open mode */ |
e7616923 | 2146 | if (state->n_rdwr == 0) { |
003707c7 | 2147 | if (state->n_rdonly == 0) { |
88069f77 TM |
2148 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2149 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2150 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2151 | } |
2152 | if (state->n_wronly == 0) { | |
88069f77 TM |
2153 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2154 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2155 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2156 | } |
e7616923 | 2157 | } |
4cecb76f | 2158 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2159 | |
2160 | if (!call_close) { | |
963d8fe5 TM |
2161 | /* Note: exit _without_ calling nfs4_close_done */ |
2162 | task->tk_action = NULL; | |
a3ca5651 | 2163 | goto out; |
9512135d | 2164 | } |
88069f77 | 2165 | |
f7e8917a | 2166 | if (calldata->arg.fmode == 0) { |
88069f77 | 2167 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2168 | if (calldata->roc && |
2169 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2170 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2171 | task, NULL); | |
a3ca5651 | 2172 | goto out; |
f7e8917a FI |
2173 | } |
2174 | } | |
88069f77 | 2175 | |
516a6af6 | 2176 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2177 | calldata->timestamp = jiffies; |
035168ab | 2178 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
9d12b216 TM |
2179 | &calldata->arg.seq_args, |
2180 | &calldata->res.seq_res, | |
2181 | task)) | |
a3ca5651 | 2182 | goto out; |
5138fde0 | 2183 | rpc_call_start(task); |
a3ca5651 CL |
2184 | out: |
2185 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2186 | } |
2187 | ||
963d8fe5 | 2188 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2189 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2190 | .rpc_call_done = nfs4_close_done, |
2191 | .rpc_release = nfs4_free_closedata, | |
2192 | }; | |
2193 | ||
1da177e4 LT |
2194 | /* |
2195 | * It is possible for data to be read/written from a mem-mapped file | |
2196 | * after the sys_close call (which hits the vfs layer as a flush). | |
2197 | * This means that we can't safely call nfsv4 close on a file until | |
2198 | * the inode is cleared. This in turn means that we are not good | |
2199 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2200 | * share state even when we are done with one of the three share | |
2201 | * stateid's in the inode. | |
2202 | * | |
2203 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2204 | */ | |
643168c2 | 2205 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2206 | { |
4a35bd41 | 2207 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2208 | struct nfs4_closedata *calldata; |
b39e625b TM |
2209 | struct nfs4_state_owner *sp = state->owner; |
2210 | struct rpc_task *task; | |
5138fde0 TM |
2211 | struct rpc_message msg = { |
2212 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2213 | .rpc_cred = state->owner->so_cred, | |
2214 | }; | |
c970aa85 TM |
2215 | struct rpc_task_setup task_setup_data = { |
2216 | .rpc_client = server->client, | |
5138fde0 | 2217 | .rpc_message = &msg, |
c970aa85 | 2218 | .callback_ops = &nfs4_close_ops, |
101070ca | 2219 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2220 | .flags = RPC_TASK_ASYNC, |
2221 | }; | |
9512135d | 2222 | int status = -ENOMEM; |
1da177e4 | 2223 | |
8535b2be | 2224 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2225 | if (calldata == NULL) |
9512135d | 2226 | goto out; |
9d12b216 | 2227 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2228 | calldata->inode = state->inode; |
1da177e4 | 2229 | calldata->state = state; |
4a35bd41 | 2230 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2231 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2232 | /* Serialization for the sequence id */ |
8535b2be | 2233 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2234 | if (calldata->arg.seqid == NULL) |
2235 | goto out_free_calldata; | |
dc0b027d | 2236 | calldata->arg.fmode = 0; |
a65318bf | 2237 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2238 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2239 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2240 | calldata->res.server = server; |
f7e8917a | 2241 | calldata->roc = roc; |
643168c2 | 2242 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2243 | |
1174dd1f TM |
2244 | msg.rpc_argp = &calldata->arg; |
2245 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2246 | task_setup_data.callback_data = calldata; |
2247 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2248 | if (IS_ERR(task)) |
2249 | return PTR_ERR(task); | |
a49c3c77 TM |
2250 | status = 0; |
2251 | if (wait) | |
2252 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2253 | rpc_put_task(task); |
a49c3c77 | 2254 | return status; |
9512135d TM |
2255 | out_free_calldata: |
2256 | kfree(calldata); | |
2257 | out: | |
f7e8917a FI |
2258 | if (roc) |
2259 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2260 | nfs4_put_open_state(state); |
2261 | nfs4_put_state_owner(sp); | |
9512135d | 2262 | return status; |
1da177e4 LT |
2263 | } |
2264 | ||
2b484297 | 2265 | static struct inode * |
cd9a1c0e | 2266 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2267 | { |
1da177e4 | 2268 | struct nfs4_state *state; |
1da177e4 | 2269 | |
565277f6 | 2270 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2271 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2272 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2273 | if (IS_ERR(state)) |
2274 | return ERR_CAST(state); | |
cd9a1c0e | 2275 | ctx->state = state; |
f46e0bd3 | 2276 | return igrab(state->inode); |
1da177e4 LT |
2277 | } |
2278 | ||
1185a552 | 2279 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2280 | { |
2281 | if (ctx->state == NULL) | |
2282 | return; | |
2283 | if (is_sync) | |
643168c2 | 2284 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2285 | else |
643168c2 | 2286 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2287 | } |
1da177e4 LT |
2288 | |
2289 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2290 | { | |
43652ad5 BH |
2291 | struct nfs4_server_caps_arg args = { |
2292 | .fhandle = fhandle, | |
2293 | }; | |
1da177e4 LT |
2294 | struct nfs4_server_caps_res res = {}; |
2295 | struct rpc_message msg = { | |
2296 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2297 | .rpc_argp = &args, |
1da177e4 LT |
2298 | .rpc_resp = &res, |
2299 | }; | |
2300 | int status; | |
2301 | ||
7c513058 | 2302 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2303 | if (status == 0) { |
2304 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2305 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2306 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2307 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2308 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2309 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2310 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2311 | server->caps |= NFS_CAP_ACLS; | |
2312 | if (res.has_links != 0) | |
2313 | server->caps |= NFS_CAP_HARDLINKS; | |
2314 | if (res.has_symlinks != 0) | |
2315 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2316 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2317 | server->caps |= NFS_CAP_FILEID; | |
2318 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2319 | server->caps |= NFS_CAP_MODE; | |
2320 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2321 | server->caps |= NFS_CAP_NLINK; | |
2322 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2323 | server->caps |= NFS_CAP_OWNER; | |
2324 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2325 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2326 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2327 | server->caps |= NFS_CAP_ATIME; | |
2328 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2329 | server->caps |= NFS_CAP_CTIME; | |
2330 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2331 | server->caps |= NFS_CAP_MTIME; | |
2332 | ||
a65318bf TM |
2333 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2334 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2335 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2336 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2337 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2338 | } |
cccef3b9 | 2339 | |
1da177e4 LT |
2340 | return status; |
2341 | } | |
2342 | ||
55a97593 | 2343 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2344 | { |
2345 | struct nfs4_exception exception = { }; | |
2346 | int err; | |
2347 | do { | |
2348 | err = nfs4_handle_exception(server, | |
2349 | _nfs4_server_capabilities(server, fhandle), | |
2350 | &exception); | |
2351 | } while (exception.retry); | |
2352 | return err; | |
2353 | } | |
2354 | ||
2355 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2356 | struct nfs_fsinfo *info) | |
2357 | { | |
1da177e4 LT |
2358 | struct nfs4_lookup_root_arg args = { |
2359 | .bitmask = nfs4_fattr_bitmap, | |
2360 | }; | |
2361 | struct nfs4_lookup_res res = { | |
2362 | .server = server, | |
0e574af1 | 2363 | .fattr = info->fattr, |
1da177e4 LT |
2364 | .fh = fhandle, |
2365 | }; | |
2366 | struct rpc_message msg = { | |
2367 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2368 | .rpc_argp = &args, | |
2369 | .rpc_resp = &res, | |
2370 | }; | |
008f55d0 | 2371 | |
0e574af1 | 2372 | nfs_fattr_init(info->fattr); |
7c513058 | 2373 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2374 | } |
2375 | ||
2376 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2377 | struct nfs_fsinfo *info) | |
2378 | { | |
2379 | struct nfs4_exception exception = { }; | |
2380 | int err; | |
2381 | do { | |
fb8a5ba8 BS |
2382 | err = _nfs4_lookup_root(server, fhandle, info); |
2383 | switch (err) { | |
2384 | case 0: | |
2385 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2386 | goto out; |
fb8a5ba8 BS |
2387 | default: |
2388 | err = nfs4_handle_exception(server, err, &exception); | |
2389 | } | |
1da177e4 | 2390 | } while (exception.retry); |
05e9cfb4 | 2391 | out: |
1da177e4 LT |
2392 | return err; |
2393 | } | |
2394 | ||
8f70e95f BS |
2395 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2396 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2397 | { | |
2398 | struct rpc_auth *auth; | |
2399 | int ret; | |
2400 | ||
2401 | auth = rpcauth_create(flavor, server->client); | |
2402 | if (!auth) { | |
2403 | ret = -EIO; | |
2404 | goto out; | |
2405 | } | |
2406 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2407 | out: |
2408 | return ret; | |
2409 | } | |
2410 | ||
801a16dc | 2411 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2412 | struct nfs_fsinfo *info) |
1da177e4 | 2413 | { |
8f70e95f | 2414 | int i, len, status = 0; |
0fabee24 | 2415 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2416 | |
6a1a1e34 CL |
2417 | len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array)); |
2418 | BUG_ON(len < 0); | |
8f70e95f BS |
2419 | |
2420 | for (i = 0; i < len; i++) { | |
6a1a1e34 CL |
2421 | /* AUTH_UNIX is the default flavor if none was specified, |
2422 | * thus has already been tried. */ | |
2423 | if (flav_array[i] == RPC_AUTH_UNIX) | |
2424 | continue; | |
2425 | ||
8f70e95f | 2426 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2427 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2428 | continue; |
2429 | break; | |
8f70e95f | 2430 | } |
fb8a5ba8 BS |
2431 | /* |
2432 | * -EACCESS could mean that the user doesn't have correct permissions | |
2433 | * to access the mount. It could also mean that we tried to mount | |
2434 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2435 | * existing mount programs don't handle -EACCES very well so it should | |
2436 | * be mapped to -EPERM instead. | |
2437 | */ | |
2438 | if (status == -EACCES) | |
2439 | status = -EPERM; | |
801a16dc BS |
2440 | return status; |
2441 | } | |
2442 | ||
2443 | /* | |
2444 | * get the file handle for the "/" directory on the server | |
2445 | */ | |
3028eb2b BS |
2446 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2447 | struct nfs_fsinfo *info) | |
801a16dc | 2448 | { |
fca78d6d | 2449 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2450 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2451 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2452 | /* | |
2453 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2454 | * by nfs4_map_errors() as this function exits. | |
2455 | */ | |
fca78d6d | 2456 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2457 | if (status == 0) |
2458 | status = nfs4_server_capabilities(server, fhandle); | |
2459 | if (status == 0) | |
2460 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2461 | return nfs4_map_errors(status); |
1da177e4 LT |
2462 | } |
2463 | ||
bae36241 BS |
2464 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2465 | struct nfs_fsinfo *info) | |
2466 | { | |
2467 | int error; | |
2468 | struct nfs_fattr *fattr = info->fattr; | |
2469 | ||
2470 | error = nfs4_server_capabilities(server, mntfh); | |
2471 | if (error < 0) { | |
2472 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2473 | return error; | |
2474 | } | |
2475 | ||
2476 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2477 | if (error < 0) { | |
2478 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2479 | return error; | |
2480 | } | |
2481 | ||
2482 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2483 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2484 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2485 | ||
2486 | return error; | |
2487 | } | |
2488 | ||
6b97fd3d MN |
2489 | /* |
2490 | * Get locations and (maybe) other attributes of a referral. | |
2491 | * Note that we'll actually follow the referral later when | |
2492 | * we detect fsid mismatch in inode revalidation | |
2493 | */ | |
f05d147f BS |
2494 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2495 | const struct qstr *name, struct nfs_fattr *fattr, | |
2496 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2497 | { |
2498 | int status = -ENOMEM; | |
2499 | struct page *page = NULL; | |
2500 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2501 | |
2502 | page = alloc_page(GFP_KERNEL); | |
2503 | if (page == NULL) | |
2504 | goto out; | |
2505 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2506 | if (locations == NULL) | |
2507 | goto out; | |
2508 | ||
f05d147f | 2509 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2510 | if (status != 0) |
2511 | goto out; | |
2512 | /* Make sure server returned a different fsid for the referral */ | |
2513 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2514 | dprintk("%s: server did not return a different fsid for" |
2515 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2516 | status = -EIO; |
2517 | goto out; | |
2518 | } | |
533eb461 AA |
2519 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2520 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2521 | |
533eb461 | 2522 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2523 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2524 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2525 | out: | |
2526 | if (page) | |
2527 | __free_page(page); | |
5d7ca35a | 2528 | kfree(locations); |
6b97fd3d MN |
2529 | return status; |
2530 | } | |
2531 | ||
1da177e4 LT |
2532 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2533 | { | |
2534 | struct nfs4_getattr_arg args = { | |
2535 | .fh = fhandle, | |
2536 | .bitmask = server->attr_bitmask, | |
2537 | }; | |
2538 | struct nfs4_getattr_res res = { | |
2539 | .fattr = fattr, | |
2540 | .server = server, | |
2541 | }; | |
2542 | struct rpc_message msg = { | |
2543 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2544 | .rpc_argp = &args, | |
2545 | .rpc_resp = &res, | |
2546 | }; | |
2547 | ||
0e574af1 | 2548 | nfs_fattr_init(fattr); |
7c513058 | 2549 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2550 | } |
2551 | ||
2552 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2553 | { | |
2554 | struct nfs4_exception exception = { }; | |
2555 | int err; | |
2556 | do { | |
2557 | err = nfs4_handle_exception(server, | |
2558 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2559 | &exception); | |
2560 | } while (exception.retry); | |
2561 | return err; | |
2562 | } | |
2563 | ||
2564 | /* | |
2565 | * The file is not closed if it is opened due to the a request to change | |
2566 | * the size of the file. The open call will not be needed once the | |
2567 | * VFS layer lookup-intents are implemented. | |
2568 | * | |
2569 | * Close is called when the inode is destroyed. | |
2570 | * If we haven't opened the file for O_WRONLY, we | |
2571 | * need to in the size_change case to obtain a stateid. | |
2572 | * | |
2573 | * Got race? | |
2574 | * Because OPEN is always done by name in nfsv4, it is | |
2575 | * possible that we opened a different file by the same | |
2576 | * name. We can recognize this race condition, but we | |
2577 | * can't do anything about it besides returning an error. | |
2578 | * | |
2579 | * This will be fixed with VFS changes (lookup-intent). | |
2580 | */ | |
2581 | static int | |
2582 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2583 | struct iattr *sattr) | |
2584 | { | |
08e9eac4 | 2585 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2586 | struct rpc_cred *cred = NULL; |
d530838b | 2587 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2588 | int status; |
2589 | ||
8a1636c4 BH |
2590 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2591 | pnfs_return_layout(inode); | |
2592 | ||
0e574af1 | 2593 | nfs_fattr_init(fattr); |
1da177e4 | 2594 | |
2669940d AA |
2595 | /* Deal with open(O_TRUNC) */ |
2596 | if (sattr->ia_valid & ATTR_OPEN) | |
2597 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2598 | ||
2599 | /* Optimization: if the end result is no change, don't RPC */ | |
2600 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2601 | return 0; | |
2602 | ||
d530838b | 2603 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2604 | if (sattr->ia_valid & ATTR_FILE) { |
2605 | struct nfs_open_context *ctx; | |
2606 | ||
2607 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2608 | if (ctx) { |
2609 | cred = ctx->cred; | |
2610 | state = ctx->state; | |
2611 | } | |
659bfcd6 | 2612 | } |
08e9eac4 | 2613 | |
659bfcd6 | 2614 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2615 | if (status == 0) |
2616 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2617 | return status; |
2618 | } | |
2619 | ||
0c2e53f1 TM |
2620 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2621 | const struct qstr *name, struct nfs_fh *fhandle, | |
2622 | struct nfs_fattr *fattr) | |
2b3de441 | 2623 | { |
0c2e53f1 | 2624 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2625 | int status; |
2626 | struct nfs4_lookup_arg args = { | |
2627 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2628 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2629 | .name = name, |
2630 | }; | |
2631 | struct nfs4_lookup_res res = { | |
2632 | .server = server, | |
2633 | .fattr = fattr, | |
2634 | .fh = fhandle, | |
2635 | }; | |
2636 | struct rpc_message msg = { | |
2637 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2638 | .rpc_argp = &args, | |
2639 | .rpc_resp = &res, | |
2640 | }; | |
2641 | ||
2642 | nfs_fattr_init(fattr); | |
2643 | ||
1da177e4 | 2644 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2645 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2646 | dprintk("NFS reply lookup: %d\n", status); |
2647 | return status; | |
2648 | } | |
2649 | ||
72de53ec | 2650 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2651 | { |
7ebb9315 | 2652 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2653 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2654 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2655 | fattr->nlink = 2; | |
2656 | } | |
2657 | ||
72de53ec BS |
2658 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2659 | struct qstr *name, struct nfs_fh *fhandle, | |
2660 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2661 | { |
2662 | struct nfs4_exception exception = { }; | |
72de53ec | 2663 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2664 | int err; |
2665 | do { | |
72de53ec BS |
2666 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2667 | switch (err) { | |
08ef7bd3 | 2668 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2669 | err = -ENOENT; |
2670 | goto out; | |
0c2e53f1 | 2671 | case -NFS4ERR_MOVED: |
f05d147f | 2672 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2673 | goto out; |
0c2e53f1 | 2674 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2675 | err = -EPERM; |
2676 | if (client != *clnt) | |
2677 | goto out; | |
2678 | ||
2679 | client = nfs4_create_sec_client(client, dir, name); | |
2680 | if (IS_ERR(client)) | |
2681 | return PTR_ERR(client); | |
2682 | ||
2683 | exception.retry = 1; | |
2684 | break; | |
2685 | default: | |
2686 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2687 | } |
1da177e4 | 2688 | } while (exception.retry); |
72de53ec BS |
2689 | |
2690 | out: | |
2691 | if (err == 0) | |
2692 | *clnt = client; | |
2693 | else if (client != *clnt) | |
2694 | rpc_shutdown_client(client); | |
2695 | ||
1da177e4 LT |
2696 | return err; |
2697 | } | |
2698 | ||
80a16b21 | 2699 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2700 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2701 | { | |
2702 | int status; | |
2703 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2704 | ||
2705 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2706 | if (client != NFS_CLIENT(dir)) { | |
2707 | rpc_shutdown_client(client); | |
2708 | nfs_fixup_secinfo_attributes(fattr); | |
2709 | } | |
2710 | return status; | |
2711 | } | |
2712 | ||
f05d147f BS |
2713 | struct rpc_clnt * |
2714 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2715 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2716 | { | |
2717 | int status; | |
2718 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2719 | ||
2720 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2721 | if (status < 0) { | |
2722 | rpc_shutdown_client(client); | |
2723 | return ERR_PTR(status); | |
2724 | } | |
2725 | return client; | |
2726 | } | |
2727 | ||
1da177e4 LT |
2728 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2729 | { | |
76b32999 | 2730 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2731 | struct nfs4_accessargs args = { |
2732 | .fh = NFS_FH(inode), | |
a4980e78 | 2733 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2734 | }; |
2735 | struct nfs4_accessres res = { | |
2736 | .server = server, | |
1da177e4 | 2737 | }; |
1da177e4 LT |
2738 | struct rpc_message msg = { |
2739 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2740 | .rpc_argp = &args, | |
2741 | .rpc_resp = &res, | |
2742 | .rpc_cred = entry->cred, | |
2743 | }; | |
2744 | int mode = entry->mask; | |
2745 | int status; | |
2746 | ||
2747 | /* | |
2748 | * Determine which access bits we want to ask for... | |
2749 | */ | |
2750 | if (mode & MAY_READ) | |
2751 | args.access |= NFS4_ACCESS_READ; | |
2752 | if (S_ISDIR(inode->i_mode)) { | |
2753 | if (mode & MAY_WRITE) | |
2754 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2755 | if (mode & MAY_EXEC) | |
2756 | args.access |= NFS4_ACCESS_LOOKUP; | |
2757 | } else { | |
2758 | if (mode & MAY_WRITE) | |
2759 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2760 | if (mode & MAY_EXEC) | |
2761 | args.access |= NFS4_ACCESS_EXECUTE; | |
2762 | } | |
c407d41a TM |
2763 | |
2764 | res.fattr = nfs_alloc_fattr(); | |
2765 | if (res.fattr == NULL) | |
2766 | return -ENOMEM; | |
2767 | ||
7c513058 | 2768 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2769 | if (!status) { |
2770 | entry->mask = 0; | |
2771 | if (res.access & NFS4_ACCESS_READ) | |
2772 | entry->mask |= MAY_READ; | |
2773 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2774 | entry->mask |= MAY_WRITE; | |
2775 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2776 | entry->mask |= MAY_EXEC; | |
c407d41a | 2777 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2778 | } |
c407d41a | 2779 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2780 | return status; |
2781 | } | |
2782 | ||
2783 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2784 | { | |
2785 | struct nfs4_exception exception = { }; | |
2786 | int err; | |
2787 | do { | |
2788 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2789 | _nfs4_proc_access(inode, entry), | |
2790 | &exception); | |
2791 | } while (exception.retry); | |
2792 | return err; | |
2793 | } | |
2794 | ||
2795 | /* | |
2796 | * TODO: For the time being, we don't try to get any attributes | |
2797 | * along with any of the zero-copy operations READ, READDIR, | |
2798 | * READLINK, WRITE. | |
2799 | * | |
2800 | * In the case of the first three, we want to put the GETATTR | |
2801 | * after the read-type operation -- this is because it is hard | |
2802 | * to predict the length of a GETATTR response in v4, and thus | |
2803 | * align the READ data correctly. This means that the GETATTR | |
2804 | * may end up partially falling into the page cache, and we should | |
2805 | * shift it into the 'tail' of the xdr_buf before processing. | |
2806 | * To do this efficiently, we need to know the total length | |
2807 | * of data received, which doesn't seem to be available outside | |
2808 | * of the RPC layer. | |
2809 | * | |
2810 | * In the case of WRITE, we also want to put the GETATTR after | |
2811 | * the operation -- in this case because we want to make sure | |
140150db | 2812 | * we get the post-operation mtime and size. |
1da177e4 LT |
2813 | * |
2814 | * Both of these changes to the XDR layer would in fact be quite | |
2815 | * minor, but I decided to leave them for a subsequent patch. | |
2816 | */ | |
2817 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2818 | unsigned int pgbase, unsigned int pglen) | |
2819 | { | |
2820 | struct nfs4_readlink args = { | |
2821 | .fh = NFS_FH(inode), | |
2822 | .pgbase = pgbase, | |
2823 | .pglen = pglen, | |
2824 | .pages = &page, | |
2825 | }; | |
f50c7000 | 2826 | struct nfs4_readlink_res res; |
1da177e4 LT |
2827 | struct rpc_message msg = { |
2828 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2829 | .rpc_argp = &args, | |
f50c7000 | 2830 | .rpc_resp = &res, |
1da177e4 LT |
2831 | }; |
2832 | ||
7c513058 | 2833 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2834 | } |
2835 | ||
2836 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2837 | unsigned int pgbase, unsigned int pglen) | |
2838 | { | |
2839 | struct nfs4_exception exception = { }; | |
2840 | int err; | |
2841 | do { | |
2842 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2843 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2844 | &exception); | |
2845 | } while (exception.retry); | |
2846 | return err; | |
2847 | } | |
2848 | ||
1da177e4 | 2849 | /* |
8867fe58 | 2850 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 2851 | */ |
1da177e4 LT |
2852 | static int |
2853 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 2854 | int flags) |
1da177e4 | 2855 | { |
8867fe58 | 2856 | struct nfs_open_context *ctx; |
1da177e4 | 2857 | struct nfs4_state *state; |
1da177e4 LT |
2858 | int status = 0; |
2859 | ||
8867fe58 MS |
2860 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
2861 | if (IS_ERR(ctx)) | |
2862 | return PTR_ERR(ctx); | |
2863 | ||
a8a5da99 | 2864 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
2865 | state = nfs4_do_open(dir, dentry, ctx->mode, |
2866 | flags, sattr, ctx->cred, | |
2867 | &ctx->mdsthreshold); | |
d4d9cdcb | 2868 | d_drop(dentry); |
1da177e4 LT |
2869 | if (IS_ERR(state)) { |
2870 | status = PTR_ERR(state); | |
c0204fd2 | 2871 | goto out; |
1da177e4 | 2872 | } |
d4d9cdcb | 2873 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2874 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 2875 | ctx->state = state; |
1da177e4 | 2876 | out: |
8867fe58 | 2877 | put_nfs_open_context(ctx); |
1da177e4 LT |
2878 | return status; |
2879 | } | |
2880 | ||
2881 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2882 | { | |
16e42959 | 2883 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2884 | struct nfs_removeargs args = { |
1da177e4 | 2885 | .fh = NFS_FH(dir), |
26fe5750 | 2886 | .name = *name, |
16e42959 | 2887 | }; |
4fdc17b2 | 2888 | struct nfs_removeres res = { |
16e42959 | 2889 | .server = server, |
1da177e4 | 2890 | }; |
1da177e4 | 2891 | struct rpc_message msg = { |
4fdc17b2 TM |
2892 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2893 | .rpc_argp = &args, | |
2894 | .rpc_resp = &res, | |
1da177e4 | 2895 | }; |
778d2817 | 2896 | int status; |
1da177e4 | 2897 | |
7c513058 | 2898 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 2899 | if (status == 0) |
16e42959 | 2900 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
2901 | return status; |
2902 | } | |
2903 | ||
2904 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2905 | { | |
2906 | struct nfs4_exception exception = { }; | |
2907 | int err; | |
2908 | do { | |
2909 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2910 | _nfs4_proc_remove(dir, name), | |
2911 | &exception); | |
2912 | } while (exception.retry); | |
2913 | return err; | |
2914 | } | |
2915 | ||
e4eff1a6 | 2916 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2917 | { |
e4eff1a6 TM |
2918 | struct nfs_server *server = NFS_SERVER(dir); |
2919 | struct nfs_removeargs *args = msg->rpc_argp; | |
2920 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2921 | |
e4eff1a6 | 2922 | res->server = server; |
1da177e4 | 2923 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2924 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2925 | } |
2926 | ||
34e137cc BS |
2927 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
2928 | { | |
2929 | if (nfs4_setup_sequence(NFS_SERVER(data->dir), | |
2930 | &data->args.seq_args, | |
2931 | &data->res.seq_res, | |
2932 | task)) | |
2933 | return; | |
2934 | rpc_call_start(task); | |
1da177e4 LT |
2935 | } |
2936 | ||
e4eff1a6 | 2937 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2938 | { |
e4eff1a6 TM |
2939 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2940 | ||
14516c3a TM |
2941 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2942 | return 0; | |
9e33bed5 | 2943 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2944 | return 0; |
2945 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 2946 | return 1; |
1da177e4 LT |
2947 | } |
2948 | ||
d3d4152a JL |
2949 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2950 | { | |
2951 | struct nfs_server *server = NFS_SERVER(dir); | |
2952 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2953 | struct nfs_renameres *res = msg->rpc_resp; | |
2954 | ||
2955 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 2956 | res->server = server; |
9d12b216 | 2957 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
2958 | } |
2959 | ||
c6bfa1a1 BS |
2960 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
2961 | { | |
2962 | if (nfs4_setup_sequence(NFS_SERVER(data->old_dir), | |
2963 | &data->args.seq_args, | |
2964 | &data->res.seq_res, | |
2965 | task)) | |
2966 | return; | |
2967 | rpc_call_start(task); | |
d3d4152a JL |
2968 | } |
2969 | ||
2970 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2971 | struct inode *new_dir) | |
2972 | { | |
2973 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2974 | ||
2975 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2976 | return 0; | |
2977 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2978 | return 0; | |
2979 | ||
2980 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 2981 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
2982 | return 1; |
2983 | } | |
2984 | ||
1da177e4 LT |
2985 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2986 | struct inode *new_dir, struct qstr *new_name) | |
2987 | { | |
6caf2c82 | 2988 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2989 | struct nfs_renameargs arg = { |
1da177e4 LT |
2990 | .old_dir = NFS_FH(old_dir), |
2991 | .new_dir = NFS_FH(new_dir), | |
2992 | .old_name = old_name, | |
2993 | .new_name = new_name, | |
6caf2c82 | 2994 | }; |
e8582a8b | 2995 | struct nfs_renameres res = { |
6caf2c82 | 2996 | .server = server, |
1da177e4 | 2997 | }; |
1da177e4 LT |
2998 | struct rpc_message msg = { |
2999 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3000 | .rpc_argp = &arg, | |
3001 | .rpc_resp = &res, | |
3002 | }; | |
011fff72 | 3003 | int status = -ENOMEM; |
1da177e4 | 3004 | |
7c513058 | 3005 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3006 | if (!status) { |
3007 | update_changeattr(old_dir, &res.old_cinfo); | |
3008 | update_changeattr(new_dir, &res.new_cinfo); | |
3009 | } | |
3010 | return status; | |
3011 | } | |
3012 | ||
3013 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3014 | struct inode *new_dir, struct qstr *new_name) | |
3015 | { | |
3016 | struct nfs4_exception exception = { }; | |
3017 | int err; | |
3018 | do { | |
3019 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3020 | _nfs4_proc_rename(old_dir, old_name, | |
3021 | new_dir, new_name), | |
3022 | &exception); | |
3023 | } while (exception.retry); | |
3024 | return err; | |
3025 | } | |
3026 | ||
3027 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3028 | { | |
91ba2eee | 3029 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3030 | struct nfs4_link_arg arg = { |
3031 | .fh = NFS_FH(inode), | |
3032 | .dir_fh = NFS_FH(dir), | |
3033 | .name = name, | |
91ba2eee TM |
3034 | .bitmask = server->attr_bitmask, |
3035 | }; | |
91ba2eee TM |
3036 | struct nfs4_link_res res = { |
3037 | .server = server, | |
1da177e4 | 3038 | }; |
1da177e4 LT |
3039 | struct rpc_message msg = { |
3040 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3041 | .rpc_argp = &arg, | |
91ba2eee | 3042 | .rpc_resp = &res, |
1da177e4 | 3043 | }; |
136f2627 TM |
3044 | int status = -ENOMEM; |
3045 | ||
3046 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3047 | if (res.fattr == NULL) |
136f2627 | 3048 | goto out; |
1da177e4 | 3049 | |
7c513058 | 3050 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3051 | if (!status) { |
3052 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3053 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3054 | } |
136f2627 | 3055 | out: |
136f2627 | 3056 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3057 | return status; |
3058 | } | |
3059 | ||
3060 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3061 | { | |
3062 | struct nfs4_exception exception = { }; | |
3063 | int err; | |
3064 | do { | |
3065 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3066 | _nfs4_proc_link(inode, dir, name), | |
3067 | &exception); | |
3068 | } while (exception.retry); | |
3069 | return err; | |
3070 | } | |
3071 | ||
57dc9a57 TM |
3072 | struct nfs4_createdata { |
3073 | struct rpc_message msg; | |
3074 | struct nfs4_create_arg arg; | |
3075 | struct nfs4_create_res res; | |
3076 | struct nfs_fh fh; | |
3077 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3078 | }; |
3079 | ||
3080 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3081 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3082 | { | |
3083 | struct nfs4_createdata *data; | |
3084 | ||
3085 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3086 | if (data != NULL) { | |
3087 | struct nfs_server *server = NFS_SERVER(dir); | |
3088 | ||
3089 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3090 | data->msg.rpc_argp = &data->arg; | |
3091 | data->msg.rpc_resp = &data->res; | |
3092 | data->arg.dir_fh = NFS_FH(dir); | |
3093 | data->arg.server = server; | |
3094 | data->arg.name = name; | |
3095 | data->arg.attrs = sattr; | |
3096 | data->arg.ftype = ftype; | |
3097 | data->arg.bitmask = server->attr_bitmask; | |
3098 | data->res.server = server; | |
3099 | data->res.fh = &data->fh; | |
3100 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3101 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3102 | } |
3103 | return data; | |
3104 | } | |
3105 | ||
3106 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3107 | { | |
7c513058 | 3108 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3109 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3110 | if (status == 0) { |
3111 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3112 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3113 | } | |
3114 | return status; | |
3115 | } | |
3116 | ||
3117 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3118 | { | |
3119 | kfree(data); | |
3120 | } | |
3121 | ||
4f390c15 | 3122 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3123 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3124 | { |
57dc9a57 TM |
3125 | struct nfs4_createdata *data; |
3126 | int status = -ENAMETOOLONG; | |
1da177e4 | 3127 | |
94a6d753 | 3128 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3129 | goto out; |
4f390c15 | 3130 | |
57dc9a57 TM |
3131 | status = -ENOMEM; |
3132 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3133 | if (data == NULL) | |
3134 | goto out; | |
3135 | ||
3136 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3137 | data->arg.u.symlink.pages = &page; | |
3138 | data->arg.u.symlink.len = len; | |
1da177e4 | 3139 | |
57dc9a57 TM |
3140 | status = nfs4_do_create(dir, dentry, data); |
3141 | ||
3142 | nfs4_free_createdata(data); | |
3143 | out: | |
1da177e4 LT |
3144 | return status; |
3145 | } | |
3146 | ||
4f390c15 | 3147 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3148 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3149 | { |
3150 | struct nfs4_exception exception = { }; | |
3151 | int err; | |
3152 | do { | |
3153 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3154 | _nfs4_proc_symlink(dir, dentry, page, |
3155 | len, sattr), | |
1da177e4 LT |
3156 | &exception); |
3157 | } while (exception.retry); | |
3158 | return err; | |
3159 | } | |
3160 | ||
3161 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3162 | struct iattr *sattr) | |
3163 | { | |
57dc9a57 TM |
3164 | struct nfs4_createdata *data; |
3165 | int status = -ENOMEM; | |
1da177e4 | 3166 | |
57dc9a57 TM |
3167 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3168 | if (data == NULL) | |
3169 | goto out; | |
3170 | ||
3171 | status = nfs4_do_create(dir, dentry, data); | |
3172 | ||
3173 | nfs4_free_createdata(data); | |
3174 | out: | |
1da177e4 LT |
3175 | return status; |
3176 | } | |
3177 | ||
3178 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3179 | struct iattr *sattr) | |
3180 | { | |
3181 | struct nfs4_exception exception = { }; | |
3182 | int err; | |
a8a5da99 AK |
3183 | |
3184 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3185 | do { |
3186 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3187 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3188 | &exception); | |
3189 | } while (exception.retry); | |
3190 | return err; | |
3191 | } | |
3192 | ||
3193 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3194 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3195 | { |
3196 | struct inode *dir = dentry->d_inode; | |
3197 | struct nfs4_readdir_arg args = { | |
3198 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3199 | .pages = pages, |
1da177e4 LT |
3200 | .pgbase = 0, |
3201 | .count = count, | |
96d25e53 | 3202 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3203 | .plus = plus, |
1da177e4 LT |
3204 | }; |
3205 | struct nfs4_readdir_res res; | |
3206 | struct rpc_message msg = { | |
3207 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3208 | .rpc_argp = &args, | |
3209 | .rpc_resp = &res, | |
3210 | .rpc_cred = cred, | |
3211 | }; | |
3212 | int status; | |
3213 | ||
3110ff80 | 3214 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3215 | dentry->d_parent->d_name.name, |
3216 | dentry->d_name.name, | |
3217 | (unsigned long long)cookie); | |
1da177e4 LT |
3218 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3219 | res.pgbase = args.pgbase; | |
7c513058 | 3220 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3221 | if (status >= 0) { |
1da177e4 | 3222 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3223 | status += args.pgbase; |
3224 | } | |
c4812998 TM |
3225 | |
3226 | nfs_invalidate_atime(dir); | |
3227 | ||
3110ff80 | 3228 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3229 | return status; |
3230 | } | |
3231 | ||
3232 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3233 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3234 | { |
3235 | struct nfs4_exception exception = { }; | |
3236 | int err; | |
3237 | do { | |
3238 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3239 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3240 | pages, count, plus), |
1da177e4 LT |
3241 | &exception); |
3242 | } while (exception.retry); | |
3243 | return err; | |
3244 | } | |
3245 | ||
3246 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3247 | struct iattr *sattr, dev_t rdev) | |
3248 | { | |
57dc9a57 TM |
3249 | struct nfs4_createdata *data; |
3250 | int mode = sattr->ia_mode; | |
3251 | int status = -ENOMEM; | |
1da177e4 LT |
3252 | |
3253 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3254 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3255 | |
3256 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3257 | if (data == NULL) | |
3258 | goto out; | |
3259 | ||
1da177e4 | 3260 | if (S_ISFIFO(mode)) |
57dc9a57 | 3261 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3262 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3263 | data->arg.ftype = NF4BLK; |
3264 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3265 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3266 | } |
3267 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3268 | data->arg.ftype = NF4CHR; |
3269 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3270 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3271 | } |
1da177e4 | 3272 | |
57dc9a57 TM |
3273 | status = nfs4_do_create(dir, dentry, data); |
3274 | ||
3275 | nfs4_free_createdata(data); | |
3276 | out: | |
1da177e4 LT |
3277 | return status; |
3278 | } | |
3279 | ||
3280 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3281 | struct iattr *sattr, dev_t rdev) | |
3282 | { | |
3283 | struct nfs4_exception exception = { }; | |
3284 | int err; | |
a8a5da99 AK |
3285 | |
3286 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3287 | do { |
3288 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3289 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3290 | &exception); | |
3291 | } while (exception.retry); | |
3292 | return err; | |
3293 | } | |
3294 | ||
3295 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3296 | struct nfs_fsstat *fsstat) | |
3297 | { | |
3298 | struct nfs4_statfs_arg args = { | |
3299 | .fh = fhandle, | |
3300 | .bitmask = server->attr_bitmask, | |
3301 | }; | |
24ad148a BH |
3302 | struct nfs4_statfs_res res = { |
3303 | .fsstat = fsstat, | |
3304 | }; | |
1da177e4 LT |
3305 | struct rpc_message msg = { |
3306 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3307 | .rpc_argp = &args, | |
24ad148a | 3308 | .rpc_resp = &res, |
1da177e4 LT |
3309 | }; |
3310 | ||
0e574af1 | 3311 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3312 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3313 | } |
3314 | ||
3315 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3316 | { | |
3317 | struct nfs4_exception exception = { }; | |
3318 | int err; | |
3319 | do { | |
3320 | err = nfs4_handle_exception(server, | |
3321 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3322 | &exception); | |
3323 | } while (exception.retry); | |
3324 | return err; | |
3325 | } | |
3326 | ||
3327 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3328 | struct nfs_fsinfo *fsinfo) | |
3329 | { | |
3330 | struct nfs4_fsinfo_arg args = { | |
3331 | .fh = fhandle, | |
3332 | .bitmask = server->attr_bitmask, | |
3333 | }; | |
3dda5e43 BH |
3334 | struct nfs4_fsinfo_res res = { |
3335 | .fsinfo = fsinfo, | |
3336 | }; | |
1da177e4 LT |
3337 | struct rpc_message msg = { |
3338 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3339 | .rpc_argp = &args, | |
3dda5e43 | 3340 | .rpc_resp = &res, |
1da177e4 LT |
3341 | }; |
3342 | ||
7c513058 | 3343 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3344 | } |
3345 | ||
3346 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3347 | { | |
3348 | struct nfs4_exception exception = { }; | |
3349 | int err; | |
3350 | ||
3351 | do { | |
3352 | err = nfs4_handle_exception(server, | |
3353 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3354 | &exception); | |
3355 | } while (exception.retry); | |
3356 | return err; | |
3357 | } | |
3358 | ||
3359 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3360 | { | |
e38eb650 BS |
3361 | int error; |
3362 | ||
0e574af1 | 3363 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 BS |
3364 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
3365 | if (error == 0) | |
3366 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); | |
3367 | ||
3368 | return error; | |
1da177e4 LT |
3369 | } |
3370 | ||
3371 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3372 | struct nfs_pathconf *pathconf) | |
3373 | { | |
3374 | struct nfs4_pathconf_arg args = { | |
3375 | .fh = fhandle, | |
3376 | .bitmask = server->attr_bitmask, | |
3377 | }; | |
d45b2989 BH |
3378 | struct nfs4_pathconf_res res = { |
3379 | .pathconf = pathconf, | |
3380 | }; | |
1da177e4 LT |
3381 | struct rpc_message msg = { |
3382 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3383 | .rpc_argp = &args, | |
d45b2989 | 3384 | .rpc_resp = &res, |
1da177e4 LT |
3385 | }; |
3386 | ||
3387 | /* None of the pathconf attributes are mandatory to implement */ | |
3388 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3389 | memset(pathconf, 0, sizeof(*pathconf)); | |
3390 | return 0; | |
3391 | } | |
3392 | ||
0e574af1 | 3393 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3394 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3395 | } |
3396 | ||
3397 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3398 | struct nfs_pathconf *pathconf) | |
3399 | { | |
3400 | struct nfs4_exception exception = { }; | |
3401 | int err; | |
3402 | ||
3403 | do { | |
3404 | err = nfs4_handle_exception(server, | |
3405 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3406 | &exception); | |
3407 | } while (exception.retry); | |
3408 | return err; | |
3409 | } | |
3410 | ||
d20581aa BH |
3411 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3412 | { | |
cd841605 | 3413 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3414 | } |
3415 | ||
cbdabc7f | 3416 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3417 | { |
cd841605 | 3418 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3419 | |
9e33bed5 | 3420 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3421 | rpc_restart_call_prepare(task); |
ec06c096 | 3422 | return -EAGAIN; |
1da177e4 | 3423 | } |
8850df99 | 3424 | |
d20581aa | 3425 | __nfs4_read_done_cb(data); |
1da177e4 | 3426 | if (task->tk_status > 0) |
ec06c096 TM |
3427 | renew_lease(server, data->timestamp); |
3428 | return 0; | |
1da177e4 LT |
3429 | } |
3430 | ||
cbdabc7f AA |
3431 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3432 | { | |
3433 | ||
3434 | dprintk("--> %s\n", __func__); | |
3435 | ||
3436 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3437 | return -EAGAIN; | |
3438 | ||
d20581aa BH |
3439 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3440 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3441 | } |
3442 | ||
bdc7f021 | 3443 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3444 | { |
1da177e4 | 3445 | data->timestamp = jiffies; |
cbdabc7f | 3446 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3447 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3448 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3449 | } |
3450 | ||
ea7c3303 BS |
3451 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3452 | { | |
cd841605 | 3453 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
ea7c3303 BS |
3454 | &data->args.seq_args, |
3455 | &data->res.seq_res, | |
3456 | task)) | |
3457 | return; | |
3458 | rpc_call_start(task); | |
1da177e4 LT |
3459 | } |
3460 | ||
b029bc9b | 3461 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3462 | { |
cd841605 | 3463 | struct inode *inode = data->header->inode; |
1da177e4 | 3464 | |
9e33bed5 | 3465 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3466 | rpc_restart_call_prepare(task); |
788e7a89 | 3467 | return -EAGAIN; |
1da177e4 | 3468 | } |
4f9838c7 | 3469 | if (task->tk_status >= 0) { |
1da177e4 | 3470 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3471 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3472 | } |
788e7a89 | 3473 | return 0; |
1da177e4 LT |
3474 | } |
3475 | ||
b029bc9b FI |
3476 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3477 | { | |
3478 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3479 | return -EAGAIN; | |
d20581aa BH |
3480 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3481 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3482 | } |
3483 | ||
5a37f851 TM |
3484 | static |
3485 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3486 | { |
5a37f851 TM |
3487 | const struct nfs_pgio_header *hdr = data->header; |
3488 | ||
3489 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3490 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3491 | return false; | |
3492 | /* Otherwise, request attributes if and only if we don't hold | |
3493 | * a delegation | |
3494 | */ | |
011e2a7f | 3495 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3496 | } |
a69aef14 | 3497 | |
bdc7f021 | 3498 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3499 | { |
cd841605 | 3500 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3501 | |
5a37f851 | 3502 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3503 | data->args.bitmask = NULL; |
3504 | data->res.fattr = NULL; | |
3505 | } else | |
3506 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3507 | |
b029bc9b FI |
3508 | if (!data->write_done_cb) |
3509 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3510 | data->res.server = server; |
1da177e4 LT |
3511 | data->timestamp = jiffies; |
3512 | ||
bdc7f021 | 3513 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3514 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3515 | } |
3516 | ||
c6cb80d0 BS |
3517 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3518 | { | |
cd841605 | 3519 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
c6cb80d0 BS |
3520 | &data->args.seq_args, |
3521 | &data->res.seq_res, | |
3522 | task)) | |
3523 | return; | |
3524 | rpc_call_start(task); | |
1da177e4 LT |
3525 | } |
3526 | ||
0b7c0153 | 3527 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 BS |
3528 | { |
3529 | if (nfs4_setup_sequence(NFS_SERVER(data->inode), | |
3530 | &data->args.seq_args, | |
3531 | &data->res.seq_res, | |
3532 | task)) | |
3533 | return; | |
3534 | rpc_call_start(task); | |
1da177e4 LT |
3535 | } |
3536 | ||
0b7c0153 | 3537 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3538 | { |
1da177e4 | 3539 | struct inode *inode = data->inode; |
14516c3a | 3540 | |
9e33bed5 | 3541 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3542 | rpc_restart_call_prepare(task); |
788e7a89 | 3543 | return -EAGAIN; |
1da177e4 | 3544 | } |
788e7a89 | 3545 | return 0; |
1da177e4 LT |
3546 | } |
3547 | ||
0b7c0153 | 3548 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3549 | { |
3550 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3551 | return -EAGAIN; | |
0b7c0153 | 3552 | return data->commit_done_cb(task, data); |
5f452431 FI |
3553 | } |
3554 | ||
0b7c0153 | 3555 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3556 | { |
788e7a89 | 3557 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3558 | |
0b7c0153 FI |
3559 | if (data->commit_done_cb == NULL) |
3560 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3561 | data->res.server = server; |
bdc7f021 | 3562 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3563 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3564 | } |
3565 | ||
9bc4e3ca CL |
3566 | struct nfs4_renewdata { |
3567 | struct nfs_client *client; | |
3568 | unsigned long timestamp; | |
3569 | }; | |
3570 | ||
1da177e4 LT |
3571 | /* |
3572 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3573 | * standalone procedure for queueing an asynchronous RENEW. | |
3574 | */ | |
9bc4e3ca | 3575 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3576 | { |
9bc4e3ca CL |
3577 | struct nfs4_renewdata *data = calldata; |
3578 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3579 | |
0851de06 AB |
3580 | if (atomic_read(&clp->cl_count) > 1) |
3581 | nfs4_schedule_state_renewal(clp); | |
3582 | nfs_put_client(clp); | |
9bc4e3ca | 3583 | kfree(data); |
dc96aef9 AB |
3584 | } |
3585 | ||
9bc4e3ca | 3586 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3587 | { |
9bc4e3ca CL |
3588 | struct nfs4_renewdata *data = calldata; |
3589 | struct nfs_client *clp = data->client; | |
3590 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3591 | |
3592 | if (task->tk_status < 0) { | |
95baa25c | 3593 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3594 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3595 | return; | |
3596 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3597 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3598 | return; |
3599 | } | |
3600 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3601 | } |
452e9352 | 3602 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3603 | } |
3604 | ||
963d8fe5 TM |
3605 | static const struct rpc_call_ops nfs4_renew_ops = { |
3606 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3607 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3608 | }; |
3609 | ||
2f60ea6b | 3610 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3611 | { |
3612 | struct rpc_message msg = { | |
3613 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3614 | .rpc_argp = clp, | |
b4454fe1 | 3615 | .rpc_cred = cred, |
1da177e4 | 3616 | }; |
9bc4e3ca | 3617 | struct nfs4_renewdata *data; |
1da177e4 | 3618 | |
2f60ea6b TM |
3619 | if (renew_flags == 0) |
3620 | return 0; | |
0851de06 AB |
3621 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3622 | return -EIO; | |
b569ad34 | 3623 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3624 | if (data == NULL) |
3625 | return -ENOMEM; | |
3626 | data->client = clp; | |
3627 | data->timestamp = jiffies; | |
1da177e4 | 3628 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3629 | &nfs4_renew_ops, data); |
1da177e4 LT |
3630 | } |
3631 | ||
8534d4ec | 3632 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3633 | { |
3634 | struct rpc_message msg = { | |
3635 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3636 | .rpc_argp = clp, | |
b4454fe1 | 3637 | .rpc_cred = cred, |
1da177e4 LT |
3638 | }; |
3639 | unsigned long now = jiffies; | |
3640 | int status; | |
3641 | ||
3642 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3643 | if (status < 0) | |
3644 | return status; | |
452e9352 | 3645 | do_renew_lease(clp, now); |
1da177e4 LT |
3646 | return 0; |
3647 | } | |
3648 | ||
aa1870af BF |
3649 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3650 | { | |
3651 | return (server->caps & NFS_CAP_ACLS) | |
3652 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3653 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3654 | } | |
3655 | ||
3656 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3657 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3658 | * the stack. | |
3659 | */ | |
3660 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3661 | ||
e9e3d724 NH |
3662 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3663 | struct page **pages, unsigned int *pgbase) | |
3664 | { | |
3665 | struct page *newpage, **spages; | |
3666 | int rc = 0; | |
3667 | size_t len; | |
3668 | spages = pages; | |
3669 | ||
3670 | do { | |
43b7c3f0 | 3671 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3672 | newpage = alloc_page(GFP_KERNEL); |
3673 | ||
3674 | if (newpage == NULL) | |
3675 | goto unwind; | |
3676 | memcpy(page_address(newpage), buf, len); | |
3677 | buf += len; | |
3678 | buflen -= len; | |
3679 | *pages++ = newpage; | |
3680 | rc++; | |
3681 | } while (buflen != 0); | |
3682 | ||
3683 | return rc; | |
3684 | ||
3685 | unwind: | |
3686 | for(; rc > 0; rc--) | |
3687 | __free_page(spages[rc-1]); | |
3688 | return -ENOMEM; | |
3689 | } | |
3690 | ||
e50a1c2e BF |
3691 | struct nfs4_cached_acl { |
3692 | int cached; | |
3693 | size_t len; | |
3e9d4154 | 3694 | char data[0]; |
e50a1c2e BF |
3695 | }; |
3696 | ||
3697 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3698 | { | |
3699 | struct nfs_inode *nfsi = NFS_I(inode); | |
3700 | ||
3701 | spin_lock(&inode->i_lock); | |
3702 | kfree(nfsi->nfs4_acl); | |
3703 | nfsi->nfs4_acl = acl; | |
3704 | spin_unlock(&inode->i_lock); | |
3705 | } | |
3706 | ||
3707 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3708 | { | |
3709 | nfs4_set_cached_acl(inode, NULL); | |
3710 | } | |
3711 | ||
3712 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3713 | { | |
3714 | struct nfs_inode *nfsi = NFS_I(inode); | |
3715 | struct nfs4_cached_acl *acl; | |
3716 | int ret = -ENOENT; | |
3717 | ||
3718 | spin_lock(&inode->i_lock); | |
3719 | acl = nfsi->nfs4_acl; | |
3720 | if (acl == NULL) | |
3721 | goto out; | |
3722 | if (buf == NULL) /* user is just asking for length */ | |
3723 | goto out_len; | |
3724 | if (acl->cached == 0) | |
3725 | goto out; | |
3726 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3727 | if (acl->len > buflen) | |
3728 | goto out; | |
3729 | memcpy(buf, acl->data, acl->len); | |
3730 | out_len: | |
3731 | ret = acl->len; | |
3732 | out: | |
3733 | spin_unlock(&inode->i_lock); | |
3734 | return ret; | |
3735 | } | |
3736 | ||
5794d21e | 3737 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3738 | { |
3739 | struct nfs4_cached_acl *acl; | |
3740 | ||
5794d21e | 3741 | if (pages && acl_len <= PAGE_SIZE) { |
e50a1c2e BF |
3742 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); |
3743 | if (acl == NULL) | |
3744 | goto out; | |
3745 | acl->cached = 1; | |
5794d21e | 3746 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3747 | } else { |
3748 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3749 | if (acl == NULL) | |
3750 | goto out; | |
3751 | acl->cached = 0; | |
3752 | } | |
3753 | acl->len = acl_len; | |
3754 | out: | |
3755 | nfs4_set_cached_acl(inode, acl); | |
3756 | } | |
3757 | ||
bf118a34 AA |
3758 | /* |
3759 | * The getxattr API returns the required buffer length when called with a | |
3760 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3761 | * the required buf. On a NULL buf, we send a page of data to the server | |
3762 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3763 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3764 | * the cache. If not so, we throw away the page, and cache the required | |
3765 | * length. The next getxattr call will then produce another round trip to | |
3766 | * the server, this time with the input buf of the required size. | |
3767 | */ | |
16b4289c | 3768 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3769 | { |
bf118a34 | 3770 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3771 | struct nfs_getaclargs args = { |
3772 | .fh = NFS_FH(inode), | |
3773 | .acl_pages = pages, | |
3774 | .acl_len = buflen, | |
3775 | }; | |
663c79b3 BH |
3776 | struct nfs_getaclres res = { |
3777 | .acl_len = buflen, | |
3778 | }; | |
aa1870af BF |
3779 | struct rpc_message msg = { |
3780 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3781 | .rpc_argp = &args, | |
663c79b3 | 3782 | .rpc_resp = &res, |
aa1870af | 3783 | }; |
56d08fef CL |
3784 | int ret = -ENOMEM, npages, i; |
3785 | size_t acl_len = 0; | |
aa1870af | 3786 | |
bf118a34 AA |
3787 | npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; |
3788 | /* As long as we're doing a round trip to the server anyway, | |
3789 | * let's be prepared for a page of acl data. */ | |
3790 | if (npages == 0) | |
3791 | npages = 1; | |
3792 | ||
5a006899 SP |
3793 | /* Add an extra page to handle the bitmap returned */ |
3794 | npages++; | |
3795 | ||
bf118a34 AA |
3796 | for (i = 0; i < npages; i++) { |
3797 | pages[i] = alloc_page(GFP_KERNEL); | |
3798 | if (!pages[i]) | |
3799 | goto out_free; | |
e50a1c2e | 3800 | } |
5a006899 SP |
3801 | |
3802 | /* for decoding across pages */ | |
3803 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3804 | if (!res.acl_scratch) | |
3805 | goto out_free; | |
3806 | ||
bf118a34 AA |
3807 | args.acl_len = npages * PAGE_SIZE; |
3808 | args.acl_pgbase = 0; | |
5a006899 | 3809 | |
bf118a34 AA |
3810 | /* Let decode_getfacl know not to fail if the ACL data is larger than |
3811 | * the page we send as a guess */ | |
3812 | if (buf == NULL) | |
3813 | res.acl_flags |= NFS4_ACL_LEN_REQUEST; | |
bf118a34 | 3814 | |
de040bec | 3815 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3816 | __func__, buf, buflen, npages, args.acl_len); |
3817 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3818 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3819 | if (ret) |
3820 | goto out_free; | |
bf118a34 AA |
3821 | |
3822 | acl_len = res.acl_len - res.acl_data_offset; | |
3823 | if (acl_len > args.acl_len) | |
5794d21e | 3824 | nfs4_write_cached_acl(inode, NULL, 0, acl_len); |
e50a1c2e | 3825 | else |
5794d21e | 3826 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, |
bf118a34 | 3827 | acl_len); |
e50a1c2e BF |
3828 | if (buf) { |
3829 | ret = -ERANGE; | |
bf118a34 | 3830 | if (acl_len > buflen) |
e50a1c2e | 3831 | goto out_free; |
bf118a34 | 3832 | _copy_from_pages(buf, pages, res.acl_data_offset, |
20e0fa98 | 3833 | acl_len); |
e50a1c2e | 3834 | } |
bf118a34 | 3835 | ret = acl_len; |
e50a1c2e | 3836 | out_free: |
bf118a34 AA |
3837 | for (i = 0; i < npages; i++) |
3838 | if (pages[i]) | |
3839 | __free_page(pages[i]); | |
331818f1 TM |
3840 | if (res.acl_scratch) |
3841 | __free_page(res.acl_scratch); | |
aa1870af BF |
3842 | return ret; |
3843 | } | |
3844 | ||
16b4289c TM |
3845 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3846 | { | |
3847 | struct nfs4_exception exception = { }; | |
3848 | ssize_t ret; | |
3849 | do { | |
3850 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3851 | if (ret >= 0) | |
3852 | break; | |
3853 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3854 | } while (exception.retry); | |
3855 | return ret; | |
3856 | } | |
3857 | ||
e50a1c2e BF |
3858 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3859 | { | |
3860 | struct nfs_server *server = NFS_SERVER(inode); | |
3861 | int ret; | |
3862 | ||
3863 | if (!nfs4_server_supports_acls(server)) | |
3864 | return -EOPNOTSUPP; | |
3865 | ret = nfs_revalidate_inode(server, inode); | |
3866 | if (ret < 0) | |
3867 | return ret; | |
08a22b39 AK |
3868 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3869 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3870 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3871 | if (ret != -ENOENT) | |
bf118a34 AA |
3872 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3873 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3874 | return ret; |
3875 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3876 | } | |
3877 | ||
16b4289c | 3878 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3879 | { |
3880 | struct nfs_server *server = NFS_SERVER(inode); | |
3881 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3882 | struct nfs_setaclargs arg = { | |
3883 | .fh = NFS_FH(inode), | |
3884 | .acl_pages = pages, | |
3885 | .acl_len = buflen, | |
3886 | }; | |
73c403a9 | 3887 | struct nfs_setaclres res; |
4b580ee3 BF |
3888 | struct rpc_message msg = { |
3889 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3890 | .rpc_argp = &arg, | |
73c403a9 | 3891 | .rpc_resp = &res, |
4b580ee3 | 3892 | }; |
e9e3d724 | 3893 | int ret, i; |
4b580ee3 BF |
3894 | |
3895 | if (!nfs4_server_supports_acls(server)) | |
3896 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3897 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3898 | if (i < 0) | |
3899 | return i; | |
57ec14c5 | 3900 | nfs4_inode_return_delegation(inode); |
7c513058 | 3901 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3902 | |
3903 | /* | |
3904 | * Free each page after tx, so the only ref left is | |
3905 | * held by the network stack | |
3906 | */ | |
3907 | for (; i > 0; i--) | |
3908 | put_page(pages[i-1]); | |
3909 | ||
08a22b39 AK |
3910 | /* |
3911 | * Acl update can result in inode attribute update. | |
3912 | * so mark the attribute cache invalid. | |
3913 | */ | |
3914 | spin_lock(&inode->i_lock); | |
3915 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3916 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3917 | nfs_access_zap_cache(inode); |
3918 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3919 | return ret; |
3920 | } | |
3921 | ||
16b4289c TM |
3922 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3923 | { | |
3924 | struct nfs4_exception exception = { }; | |
3925 | int err; | |
3926 | do { | |
3927 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3928 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3929 | &exception); | |
3930 | } while (exception.retry); | |
3931 | return err; | |
3932 | } | |
3933 | ||
1da177e4 | 3934 | static int |
aa5190d0 | 3935 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3936 | { |
aa5190d0 TM |
3937 | struct nfs_client *clp = server->nfs_client; |
3938 | ||
3939 | if (task->tk_status >= 0) | |
1da177e4 LT |
3940 | return 0; |
3941 | switch(task->tk_status) { | |
a1d0b5ee | 3942 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3943 | case -NFS4ERR_ADMIN_REVOKED: |
3944 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
3945 | if (state == NULL) |
3946 | break; | |
3947 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3948 | case -NFS4ERR_OPENMODE: |
3949 | if (state == NULL) | |
3950 | break; | |
0400a6b0 TM |
3951 | nfs4_schedule_stateid_recovery(server, state); |
3952 | goto wait_on_recovery; | |
0ced63d1 TM |
3953 | case -NFS4ERR_EXPIRED: |
3954 | if (state != NULL) | |
3955 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3956 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3957 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3958 | nfs4_schedule_lease_recovery(clp); |
3959 | goto wait_on_recovery; | |
4745e315 AA |
3960 | #if defined(CONFIG_NFS_V4_1) |
3961 | case -NFS4ERR_BADSESSION: | |
3962 | case -NFS4ERR_BADSLOT: | |
3963 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3964 | case -NFS4ERR_DEADSESSION: | |
3965 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3966 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3967 | case -NFS4ERR_SEQ_MISORDERED: | |
3968 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3969 | task->tk_status); | |
9f594791 | 3970 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
3971 | task->tk_status = 0; |
3972 | return -EAGAIN; | |
3973 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3974 | case -NFS4ERR_DELAY: |
aa5190d0 | 3975 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3976 | case -NFS4ERR_GRACE: |
2c643488 | 3977 | case -EKEYEXPIRED: |
1da177e4 LT |
3978 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3979 | task->tk_status = 0; | |
3980 | return -EAGAIN; | |
a8a4ae3a | 3981 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3982 | case -NFS4ERR_OLD_STATEID: |
3983 | task->tk_status = 0; | |
3984 | return -EAGAIN; | |
3985 | } | |
3986 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3987 | return 0; | |
0400a6b0 | 3988 | wait_on_recovery: |
a2c0b9e2 | 3989 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3990 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3991 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3992 | task->tk_status = 0; | |
3993 | return -EAGAIN; | |
1da177e4 LT |
3994 | } |
3995 | ||
f092075d CL |
3996 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
3997 | nfs4_verifier *bootverf) | |
cd93710e CL |
3998 | { |
3999 | __be32 verf[2]; | |
4000 | ||
2c820d9a CL |
4001 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4002 | /* An impossible timestamp guarantees this value | |
4003 | * will never match a generated boot time. */ | |
4004 | verf[0] = 0; | |
4005 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
4006 | } else { | |
f092075d CL |
4007 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
4008 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
4009 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4010 | } |
cd93710e CL |
4011 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4012 | } | |
4013 | ||
6bbb4ae8 CL |
4014 | /** |
4015 | * nfs4_proc_setclientid - Negotiate client ID | |
4016 | * @clp: state data structure | |
4017 | * @program: RPC program for NFSv4 callback service | |
4018 | * @port: IP port number for NFS4 callback service | |
4019 | * @cred: RPC credential to use for this call | |
4020 | * @res: where to place the result | |
4021 | * | |
4022 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4023 | */ | |
bb8b27e5 TM |
4024 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4025 | unsigned short port, struct rpc_cred *cred, | |
4026 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4027 | { |
4028 | nfs4_verifier sc_verifier; | |
4029 | struct nfs4_setclientid setclientid = { | |
4030 | .sc_verifier = &sc_verifier, | |
4031 | .sc_prog = program, | |
f4eecd5d | 4032 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4033 | }; |
4034 | struct rpc_message msg = { | |
4035 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4036 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4037 | .rpc_resp = res, |
286d7d6a | 4038 | .rpc_cred = cred, |
1da177e4 | 4039 | }; |
6bbb4ae8 | 4040 | int status; |
1da177e4 | 4041 | |
de734831 | 4042 | /* nfs_client_id4 */ |
f092075d | 4043 | nfs4_init_boot_verifier(clp, &sc_verifier); |
de734831 CL |
4044 | rcu_read_lock(); |
4045 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
4046 | sizeof(setclientid.sc_name), "%s/%s %s", | |
4047 | clp->cl_ipaddr, | |
4048 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4049 | RPC_DISPLAY_ADDR), | |
4050 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4051 | RPC_DISPLAY_PROTO)); | |
4052 | /* cb_client4 */ | |
4053 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
4054 | sizeof(setclientid.sc_netid), |
4055 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4056 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4057 | rcu_read_unlock(); |
4058 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4059 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4060 | clp->cl_ipaddr, port >> 8, port & 255); |
4061 | ||
6bbb4ae8 CL |
4062 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4063 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4064 | setclientid.sc_name_len, setclientid.sc_name); | |
4065 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4066 | dprintk("NFS reply setclientid: %d\n", status); | |
4067 | return status; | |
1da177e4 LT |
4068 | } |
4069 | ||
6bbb4ae8 CL |
4070 | /** |
4071 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4072 | * @clp: state data structure | |
4073 | * @res: result of a previous SETCLIENTID | |
4074 | * @cred: RPC credential to use for this call | |
4075 | * | |
4076 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4077 | */ | |
fd954ae1 | 4078 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4079 | struct nfs4_setclientid_res *arg, |
4080 | struct rpc_cred *cred) | |
1da177e4 LT |
4081 | { |
4082 | struct nfs_fsinfo fsinfo; | |
4083 | struct rpc_message msg = { | |
4084 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4085 | .rpc_argp = arg, |
1da177e4 | 4086 | .rpc_resp = &fsinfo, |
286d7d6a | 4087 | .rpc_cred = cred, |
1da177e4 LT |
4088 | }; |
4089 | unsigned long now; | |
4090 | int status; | |
4091 | ||
6bbb4ae8 CL |
4092 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4093 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4094 | clp->cl_clientid); | |
1da177e4 | 4095 | now = jiffies; |
1bd714f2 | 4096 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4097 | if (status == 0) { |
4098 | spin_lock(&clp->cl_lock); | |
4099 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4100 | clp->cl_last_renewal = now; | |
4101 | spin_unlock(&clp->cl_lock); | |
4102 | } | |
6bbb4ae8 | 4103 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4104 | return status; |
4105 | } | |
4106 | ||
fe650407 TM |
4107 | struct nfs4_delegreturndata { |
4108 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4109 | struct nfs4_delegreturnres res; |
fe650407 TM |
4110 | struct nfs_fh fh; |
4111 | nfs4_stateid stateid; | |
26e976a8 | 4112 | unsigned long timestamp; |
fa178f29 | 4113 | struct nfs_fattr fattr; |
fe650407 TM |
4114 | int rpc_status; |
4115 | }; | |
4116 | ||
fe650407 TM |
4117 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4118 | { | |
4119 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4120 | |
14516c3a TM |
4121 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4122 | return; | |
938e1010 | 4123 | |
79708861 RL |
4124 | switch (task->tk_status) { |
4125 | case -NFS4ERR_STALE_STATEID: | |
4126 | case -NFS4ERR_EXPIRED: | |
4127 | case 0: | |
fa178f29 | 4128 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4129 | break; |
4130 | default: | |
4131 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4132 | -EAGAIN) { | |
d00c5d43 | 4133 | rpc_restart_call_prepare(task); |
79708861 RL |
4134 | return; |
4135 | } | |
4136 | } | |
4137 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4138 | } |
4139 | ||
4140 | static void nfs4_delegreturn_release(void *calldata) | |
4141 | { | |
fe650407 TM |
4142 | kfree(calldata); |
4143 | } | |
4144 | ||
938e1010 AA |
4145 | #if defined(CONFIG_NFS_V4_1) |
4146 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4147 | { | |
4148 | struct nfs4_delegreturndata *d_data; | |
4149 | ||
4150 | d_data = (struct nfs4_delegreturndata *)data; | |
4151 | ||
035168ab | 4152 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 4153 | &d_data->args.seq_args, |
9d12b216 | 4154 | &d_data->res.seq_res, task)) |
938e1010 AA |
4155 | return; |
4156 | rpc_call_start(task); | |
4157 | } | |
4158 | #endif /* CONFIG_NFS_V4_1 */ | |
4159 | ||
c8d149f3 | 4160 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4161 | #if defined(CONFIG_NFS_V4_1) |
4162 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4163 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4164 | .rpc_call_done = nfs4_delegreturn_done, |
4165 | .rpc_release = nfs4_delegreturn_release, | |
4166 | }; | |
4167 | ||
e6f81075 | 4168 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4169 | { |
4170 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4171 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4172 | struct rpc_task *task; |
5138fde0 TM |
4173 | struct rpc_message msg = { |
4174 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4175 | .rpc_cred = cred, | |
4176 | }; | |
c970aa85 TM |
4177 | struct rpc_task_setup task_setup_data = { |
4178 | .rpc_client = server->client, | |
5138fde0 | 4179 | .rpc_message = &msg, |
c970aa85 TM |
4180 | .callback_ops = &nfs4_delegreturn_ops, |
4181 | .flags = RPC_TASK_ASYNC, | |
4182 | }; | |
e6f81075 | 4183 | int status = 0; |
fe650407 | 4184 | |
8535b2be | 4185 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4186 | if (data == NULL) |
4187 | return -ENOMEM; | |
9d12b216 | 4188 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4189 | data->args.fhandle = &data->fh; |
4190 | data->args.stateid = &data->stateid; | |
9e907fec | 4191 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4192 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4193 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4194 | data->res.fattr = &data->fattr; |
4195 | data->res.server = server; | |
5138fde0 | 4196 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4197 | data->timestamp = jiffies; |
fe650407 TM |
4198 | data->rpc_status = 0; |
4199 | ||
c970aa85 | 4200 | task_setup_data.callback_data = data; |
1174dd1f TM |
4201 | msg.rpc_argp = &data->args; |
4202 | msg.rpc_resp = &data->res; | |
c970aa85 | 4203 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4204 | if (IS_ERR(task)) |
fe650407 | 4205 | return PTR_ERR(task); |
e6f81075 TM |
4206 | if (!issync) |
4207 | goto out; | |
fe650407 | 4208 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4209 | if (status != 0) |
4210 | goto out; | |
4211 | status = data->rpc_status; | |
e144cbcc TM |
4212 | if (status == 0) |
4213 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4214 | else | |
4215 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4216 | out: |
e6b3c4db | 4217 | rpc_put_task(task); |
fe650407 | 4218 | return status; |
1da177e4 LT |
4219 | } |
4220 | ||
e6f81075 | 4221 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4222 | { |
4223 | struct nfs_server *server = NFS_SERVER(inode); | |
4224 | struct nfs4_exception exception = { }; | |
4225 | int err; | |
4226 | do { | |
e6f81075 | 4227 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4228 | switch (err) { |
4229 | case -NFS4ERR_STALE_STATEID: | |
4230 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4231 | case 0: |
4232 | return 0; | |
4233 | } | |
4234 | err = nfs4_handle_exception(server, err, &exception); | |
4235 | } while (exception.retry); | |
4236 | return err; | |
4237 | } | |
4238 | ||
4239 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4240 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4241 | ||
4242 | /* | |
4243 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4244 | */ | |
4245 | static unsigned long | |
4246 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4247 | { | |
d310310c | 4248 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4249 | timeout <<= 1; |
4250 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4251 | return NFS4_LOCK_MAXTIMEOUT; | |
4252 | return timeout; | |
4253 | } | |
4254 | ||
1da177e4 LT |
4255 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4256 | { | |
4257 | struct inode *inode = state->inode; | |
4258 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4259 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4260 | struct nfs_lockt_args arg = { |
1da177e4 | 4261 | .fh = NFS_FH(inode), |
911d1aaf | 4262 | .fl = request, |
1da177e4 | 4263 | }; |
911d1aaf TM |
4264 | struct nfs_lockt_res res = { |
4265 | .denied = request, | |
1da177e4 LT |
4266 | }; |
4267 | struct rpc_message msg = { | |
4268 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4269 | .rpc_argp = &arg, | |
4270 | .rpc_resp = &res, | |
4271 | .rpc_cred = state->owner->so_cred, | |
4272 | }; | |
1da177e4 LT |
4273 | struct nfs4_lock_state *lsp; |
4274 | int status; | |
4275 | ||
911d1aaf | 4276 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4277 | status = nfs4_set_lock_state(state, request); |
4278 | if (status != 0) | |
4279 | goto out; | |
4280 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4281 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4282 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4283 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4284 | switch (status) { |
4285 | case 0: | |
4286 | request->fl_type = F_UNLCK; | |
4287 | break; | |
4288 | case -NFS4ERR_DENIED: | |
4289 | status = 0; | |
1da177e4 | 4290 | } |
70cc6487 | 4291 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4292 | out: |
1da177e4 LT |
4293 | return status; |
4294 | } | |
4295 | ||
4296 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4297 | { | |
4298 | struct nfs4_exception exception = { }; | |
4299 | int err; | |
4300 | ||
4301 | do { | |
4302 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4303 | _nfs4_proc_getlk(state, cmd, request), | |
4304 | &exception); | |
4305 | } while (exception.retry); | |
4306 | return err; | |
4307 | } | |
4308 | ||
4309 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4310 | { | |
4311 | int res = 0; | |
4312 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4313 | case FL_POSIX: | |
4314 | res = posix_lock_file_wait(file, fl); | |
4315 | break; | |
4316 | case FL_FLOCK: | |
4317 | res = flock_lock_file_wait(file, fl); | |
4318 | break; | |
4319 | default: | |
4320 | BUG(); | |
4321 | } | |
1da177e4 LT |
4322 | return res; |
4323 | } | |
4324 | ||
faf5f49c | 4325 | struct nfs4_unlockdata { |
911d1aaf TM |
4326 | struct nfs_locku_args arg; |
4327 | struct nfs_locku_res res; | |
faf5f49c TM |
4328 | struct nfs4_lock_state *lsp; |
4329 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4330 | struct file_lock fl; |
4331 | const struct nfs_server *server; | |
26e976a8 | 4332 | unsigned long timestamp; |
faf5f49c TM |
4333 | }; |
4334 | ||
911d1aaf TM |
4335 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4336 | struct nfs_open_context *ctx, | |
4337 | struct nfs4_lock_state *lsp, | |
4338 | struct nfs_seqid *seqid) | |
4339 | { | |
4340 | struct nfs4_unlockdata *p; | |
4341 | struct inode *inode = lsp->ls_state->inode; | |
4342 | ||
8535b2be | 4343 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4344 | if (p == NULL) |
4345 | return NULL; | |
4346 | p->arg.fh = NFS_FH(inode); | |
4347 | p->arg.fl = &p->fl; | |
4348 | p->arg.seqid = seqid; | |
c1d51931 | 4349 | p->res.seqid = seqid; |
911d1aaf TM |
4350 | p->arg.stateid = &lsp->ls_stateid; |
4351 | p->lsp = lsp; | |
4352 | atomic_inc(&lsp->ls_count); | |
4353 | /* Ensure we don't close file until we're done freeing locks! */ | |
4354 | p->ctx = get_nfs_open_context(ctx); | |
4355 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4356 | p->server = NFS_SERVER(inode); | |
4357 | return p; | |
4358 | } | |
4359 | ||
06f814a3 | 4360 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4361 | { |
963d8fe5 | 4362 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4363 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4364 | nfs4_put_lock_state(calldata->lsp); |
4365 | put_nfs_open_context(calldata->ctx); | |
4366 | kfree(calldata); | |
faf5f49c TM |
4367 | } |
4368 | ||
963d8fe5 | 4369 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4370 | { |
963d8fe5 | 4371 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4372 | |
14516c3a TM |
4373 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4374 | return; | |
faf5f49c TM |
4375 | switch (task->tk_status) { |
4376 | case 0: | |
f597c537 TM |
4377 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4378 | &calldata->res.stateid); | |
26e976a8 | 4379 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4380 | break; |
9e33bed5 TM |
4381 | case -NFS4ERR_BAD_STATEID: |
4382 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4383 | case -NFS4ERR_STALE_STATEID: |
4384 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4385 | break; |
4386 | default: | |
9e33bed5 | 4387 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4388 | rpc_restart_call_prepare(task); |
faf5f49c | 4389 | } |
faf5f49c TM |
4390 | } |
4391 | ||
4ce70ada | 4392 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4393 | { |
4ce70ada | 4394 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4395 | |
911d1aaf | 4396 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4397 | return; |
4398 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4399 | /* Note: exit _without_ running nfs4_locku_done */ |
4400 | task->tk_action = NULL; | |
faf5f49c TM |
4401 | return; |
4402 | } | |
26e976a8 | 4403 | calldata->timestamp = jiffies; |
035168ab | 4404 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4405 | &calldata->arg.seq_args, |
9d12b216 | 4406 | &calldata->res.seq_res, task)) |
a893693c | 4407 | return; |
5138fde0 | 4408 | rpc_call_start(task); |
faf5f49c TM |
4409 | } |
4410 | ||
963d8fe5 | 4411 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4412 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4413 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4414 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4415 | }; |
4416 | ||
a5d16a4d TM |
4417 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4418 | struct nfs_open_context *ctx, | |
4419 | struct nfs4_lock_state *lsp, | |
4420 | struct nfs_seqid *seqid) | |
4421 | { | |
4422 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4423 | struct rpc_message msg = { |
4424 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4425 | .rpc_cred = ctx->cred, | |
4426 | }; | |
c970aa85 TM |
4427 | struct rpc_task_setup task_setup_data = { |
4428 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4429 | .rpc_message = &msg, |
c970aa85 | 4430 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4431 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4432 | .flags = RPC_TASK_ASYNC, |
4433 | }; | |
a5d16a4d | 4434 | |
137d6aca FF |
4435 | /* Ensure this is an unlock - when canceling a lock, the |
4436 | * canceled lock is passed in, and it won't be an unlock. | |
4437 | */ | |
4438 | fl->fl_type = F_UNLCK; | |
4439 | ||
a5d16a4d TM |
4440 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4441 | if (data == NULL) { | |
4442 | nfs_free_seqid(seqid); | |
4443 | return ERR_PTR(-ENOMEM); | |
4444 | } | |
4445 | ||
9d12b216 | 4446 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4447 | msg.rpc_argp = &data->arg; |
4448 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4449 | task_setup_data.callback_data = data; |
4450 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4451 | } |
4452 | ||
faf5f49c TM |
4453 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4454 | { | |
19e03c57 | 4455 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4456 | struct nfs_seqid *seqid; |
1da177e4 | 4457 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4458 | struct rpc_task *task; |
4459 | int status = 0; | |
536ff0f8 | 4460 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4461 | |
8d0a8a9d | 4462 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4463 | /* Unlock _before_ we do the RPC call */ |
4464 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4465 | down_read(&nfsi->rwsem); |
4466 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4467 | up_read(&nfsi->rwsem); | |
9b073574 | 4468 | goto out; |
19e03c57 TM |
4469 | } |
4470 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4471 | if (status != 0) |
9b073574 TM |
4472 | goto out; |
4473 | /* Is this a delegated lock? */ | |
4474 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4475 | goto out; | |
8d0a8a9d | 4476 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4477 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4478 | status = -ENOMEM; |
911d1aaf | 4479 | if (seqid == NULL) |
9b073574 | 4480 | goto out; |
cd3758e3 | 4481 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4482 | status = PTR_ERR(task); |
4483 | if (IS_ERR(task)) | |
9b073574 | 4484 | goto out; |
a5d16a4d | 4485 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4486 | rpc_put_task(task); |
9b073574 | 4487 | out: |
536ff0f8 | 4488 | request->fl_flags = fl_flags; |
1da177e4 LT |
4489 | return status; |
4490 | } | |
4491 | ||
a5d16a4d TM |
4492 | struct nfs4_lockdata { |
4493 | struct nfs_lock_args arg; | |
4494 | struct nfs_lock_res res; | |
4495 | struct nfs4_lock_state *lsp; | |
4496 | struct nfs_open_context *ctx; | |
4497 | struct file_lock fl; | |
26e976a8 | 4498 | unsigned long timestamp; |
a5d16a4d TM |
4499 | int rpc_status; |
4500 | int cancelled; | |
66179efe | 4501 | struct nfs_server *server; |
a5d16a4d TM |
4502 | }; |
4503 | ||
4504 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4505 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4506 | gfp_t gfp_mask) | |
1da177e4 | 4507 | { |
a5d16a4d TM |
4508 | struct nfs4_lockdata *p; |
4509 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4510 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4511 | |
8535b2be | 4512 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4513 | if (p == NULL) |
4514 | return NULL; | |
4515 | ||
4516 | p->arg.fh = NFS_FH(inode); | |
4517 | p->arg.fl = &p->fl; | |
8535b2be | 4518 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4519 | if (p->arg.open_seqid == NULL) |
4520 | goto out_free; | |
8535b2be | 4521 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4522 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4523 | goto out_free_seqid; |
a5d16a4d | 4524 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4525 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4526 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4527 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4528 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4529 | p->lsp = lsp; |
66179efe | 4530 | p->server = server; |
a5d16a4d TM |
4531 | atomic_inc(&lsp->ls_count); |
4532 | p->ctx = get_nfs_open_context(ctx); | |
4533 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4534 | return p; | |
2f74c0a0 TM |
4535 | out_free_seqid: |
4536 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4537 | out_free: |
4538 | kfree(p); | |
4539 | return NULL; | |
4540 | } | |
4541 | ||
4542 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4543 | { | |
4544 | struct nfs4_lockdata *data = calldata; | |
4545 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4546 | |
3110ff80 | 4547 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4548 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4549 | return; | |
a5d16a4d TM |
4550 | /* Do we need to do an open_to_lock_owner? */ |
4551 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4552 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4553 | return; | |
a5d16a4d TM |
4554 | data->arg.open_stateid = &state->stateid; |
4555 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4556 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4557 | } else |
4558 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4559 | data->timestamp = jiffies; |
035168ab TM |
4560 | if (nfs4_setup_sequence(data->server, |
4561 | &data->arg.seq_args, | |
9d12b216 | 4562 | &data->res.seq_res, task)) |
66179efe | 4563 | return; |
5138fde0 | 4564 | rpc_call_start(task); |
3110ff80 | 4565 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4566 | } |
4567 | ||
b257957e AB |
4568 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4569 | { | |
4570 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4571 | nfs4_lock_prepare(task, calldata); | |
4572 | } | |
4573 | ||
a5d16a4d TM |
4574 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4575 | { | |
4576 | struct nfs4_lockdata *data = calldata; | |
4577 | ||
3110ff80 | 4578 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4579 | |
14516c3a TM |
4580 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4581 | return; | |
66179efe | 4582 | |
a5d16a4d | 4583 | data->rpc_status = task->tk_status; |
a5d16a4d | 4584 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4585 | if (data->rpc_status == 0) |
4586 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4587 | else | |
4588 | goto out; | |
4589 | } | |
4590 | if (data->rpc_status == 0) { | |
f597c537 | 4591 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
a5d16a4d | 4592 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; |
3d4ff43d | 4593 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4594 | } |
a5d16a4d | 4595 | out: |
3110ff80 | 4596 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4597 | } |
4598 | ||
4599 | static void nfs4_lock_release(void *calldata) | |
4600 | { | |
4601 | struct nfs4_lockdata *data = calldata; | |
4602 | ||
3110ff80 | 4603 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4604 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4605 | if (data->cancelled != 0) { |
4606 | struct rpc_task *task; | |
4607 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4608 | data->arg.lock_seqid); | |
4609 | if (!IS_ERR(task)) | |
bf294b41 | 4610 | rpc_put_task_async(task); |
3110ff80 | 4611 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4612 | } else |
4613 | nfs_free_seqid(data->arg.lock_seqid); | |
4614 | nfs4_put_lock_state(data->lsp); | |
4615 | put_nfs_open_context(data->ctx); | |
4616 | kfree(data); | |
3110ff80 | 4617 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4618 | } |
4619 | ||
4620 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4621 | .rpc_call_prepare = nfs4_lock_prepare, | |
4622 | .rpc_call_done = nfs4_lock_done, | |
4623 | .rpc_release = nfs4_lock_release, | |
4624 | }; | |
4625 | ||
b257957e AB |
4626 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4627 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4628 | .rpc_call_done = nfs4_lock_done, | |
4629 | .rpc_release = nfs4_lock_release, | |
4630 | }; | |
4631 | ||
2bee72a6 TM |
4632 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4633 | { | |
2bee72a6 TM |
4634 | switch (error) { |
4635 | case -NFS4ERR_ADMIN_REVOKED: | |
4636 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4637 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4638 | if (new_lock_owner != 0 || |
4639 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4640 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4641 | break; |
4642 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4643 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4644 | case -NFS4ERR_EXPIRED: |
4645 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4646 | }; |
4647 | } | |
4648 | ||
afe6c27c | 4649 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4650 | { |
4651 | struct nfs4_lockdata *data; | |
4652 | struct rpc_task *task; | |
5138fde0 TM |
4653 | struct rpc_message msg = { |
4654 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4655 | .rpc_cred = state->owner->so_cred, | |
4656 | }; | |
c970aa85 TM |
4657 | struct rpc_task_setup task_setup_data = { |
4658 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4659 | .rpc_message = &msg, |
c970aa85 | 4660 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4661 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4662 | .flags = RPC_TASK_ASYNC, |
4663 | }; | |
a5d16a4d TM |
4664 | int ret; |
4665 | ||
3110ff80 | 4666 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4667 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4668 | fl->fl_u.nfs4_fl.owner, |
4669 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4670 | if (data == NULL) |
4671 | return -ENOMEM; | |
4672 | if (IS_SETLKW(cmd)) | |
4673 | data->arg.block = 1; | |
b257957e AB |
4674 | if (recovery_type > NFS_LOCK_NEW) { |
4675 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4676 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4677 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4678 | } | |
9d12b216 | 4679 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4680 | msg.rpc_argp = &data->arg; |
4681 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4682 | task_setup_data.callback_data = data; |
4683 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4684 | if (IS_ERR(task)) |
a5d16a4d | 4685 | return PTR_ERR(task); |
a5d16a4d TM |
4686 | ret = nfs4_wait_for_completion_rpc_task(task); |
4687 | if (ret == 0) { | |
4688 | ret = data->rpc_status; | |
2bee72a6 TM |
4689 | if (ret) |
4690 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4691 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4692 | } else |
4693 | data->cancelled = 1; | |
e6b3c4db | 4694 | rpc_put_task(task); |
3110ff80 | 4695 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4696 | return ret; |
1da177e4 LT |
4697 | } |
4698 | ||
4699 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4700 | { | |
202b50dc | 4701 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4702 | struct nfs4_exception exception = { |
4703 | .inode = state->inode, | |
4704 | }; | |
202b50dc TM |
4705 | int err; |
4706 | ||
4707 | do { | |
42a2d13e TM |
4708 | /* Cache the lock if possible... */ |
4709 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4710 | return 0; | |
afe6c27c | 4711 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4712 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4713 | break; |
4714 | nfs4_handle_exception(server, err, &exception); | |
4715 | } while (exception.retry); | |
4716 | return err; | |
1da177e4 LT |
4717 | } |
4718 | ||
4719 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4720 | { | |
202b50dc | 4721 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4722 | struct nfs4_exception exception = { |
4723 | .inode = state->inode, | |
4724 | }; | |
202b50dc TM |
4725 | int err; |
4726 | ||
6bfc93ef TM |
4727 | err = nfs4_set_lock_state(state, request); |
4728 | if (err != 0) | |
4729 | return err; | |
202b50dc | 4730 | do { |
42a2d13e TM |
4731 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4732 | return 0; | |
afe6c27c | 4733 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4734 | switch (err) { |
4735 | default: | |
4736 | goto out; | |
4737 | case -NFS4ERR_GRACE: | |
4738 | case -NFS4ERR_DELAY: | |
4739 | nfs4_handle_exception(server, err, &exception); | |
4740 | err = 0; | |
4741 | } | |
202b50dc | 4742 | } while (exception.retry); |
a9ed2e25 | 4743 | out: |
202b50dc | 4744 | return err; |
1da177e4 LT |
4745 | } |
4746 | ||
f062eb6c | 4747 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
4748 | /** |
4749 | * nfs41_check_expired_locks - possibly free a lock stateid | |
4750 | * | |
4751 | * @state: NFSv4 state for an inode | |
4752 | * | |
4753 | * Returns NFS_OK if recovery for this stateid is now finished. | |
4754 | * Otherwise a negative NFS4ERR value is returned. | |
4755 | */ | |
b01dd1d8 | 4756 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4757 | { |
eb64cf96 | 4758 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 4759 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
4760 | struct nfs_server *server = NFS_SERVER(state->inode); |
4761 | ||
b01dd1d8 BS |
4762 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
4763 | if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { | |
4764 | status = nfs41_test_stateid(server, &lsp->ls_stateid); | |
4765 | if (status != NFS_OK) { | |
3e60ffdd CL |
4766 | /* Free the stateid unless the server |
4767 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
4768 | if (status != -NFS4ERR_BAD_STATEID) |
4769 | nfs41_free_stateid(server, | |
4770 | &lsp->ls_stateid); | |
b01dd1d8 BS |
4771 | lsp->ls_flags &= ~NFS_LOCK_INITIALIZED; |
4772 | ret = status; | |
4773 | } | |
4774 | } | |
4775 | }; | |
4776 | ||
4777 | return ret; | |
4778 | } | |
4779 | ||
4780 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4781 | { | |
4782 | int status = NFS_OK; | |
4783 | ||
4784 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4785 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
4786 | if (status != NFS_OK) |
4787 | status = nfs4_lock_expired(state, request); | |
4788 | return status; | |
f062eb6c BS |
4789 | } |
4790 | #endif | |
4791 | ||
1da177e4 LT |
4792 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4793 | { | |
19e03c57 | 4794 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4795 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4796 | int status = -ENOLCK; |
1da177e4 | 4797 | |
8e469ebd TM |
4798 | if ((fl_flags & FL_POSIX) && |
4799 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4800 | goto out; | |
6bfc93ef | 4801 | /* Is this a delegated open? */ |
6bfc93ef TM |
4802 | status = nfs4_set_lock_state(state, request); |
4803 | if (status != 0) | |
4804 | goto out; | |
01c3b861 TM |
4805 | request->fl_flags |= FL_ACCESS; |
4806 | status = do_vfs_lock(request->fl_file, request); | |
4807 | if (status < 0) | |
4808 | goto out; | |
19e03c57 | 4809 | down_read(&nfsi->rwsem); |
01c3b861 | 4810 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4811 | /* Yes: cache locks! */ |
01c3b861 | 4812 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4813 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4814 | status = do_vfs_lock(request->fl_file, request); | |
4815 | goto out_unlock; | |
01c3b861 | 4816 | } |
afe6c27c | 4817 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4818 | if (status != 0) |
01c3b861 | 4819 | goto out_unlock; |
6bfc93ef | 4820 | /* Note: we always want to sleep here! */ |
01c3b861 | 4821 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4822 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4823 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4824 | "manager!\n", __func__); | |
01c3b861 | 4825 | out_unlock: |
19e03c57 | 4826 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4827 | out: |
4828 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4829 | return status; |
4830 | } | |
4831 | ||
4832 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4833 | { | |
a1d0b5ee TM |
4834 | struct nfs4_exception exception = { |
4835 | .state = state, | |
05ffe24f | 4836 | .inode = state->inode, |
a1d0b5ee | 4837 | }; |
1da177e4 LT |
4838 | int err; |
4839 | ||
4840 | do { | |
965b5d67 TM |
4841 | err = _nfs4_proc_setlk(state, cmd, request); |
4842 | if (err == -NFS4ERR_DENIED) | |
4843 | err = -EAGAIN; | |
1da177e4 | 4844 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4845 | err, &exception); |
1da177e4 LT |
4846 | } while (exception.retry); |
4847 | return err; | |
4848 | } | |
4849 | ||
4850 | static int | |
4851 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4852 | { | |
4853 | struct nfs_open_context *ctx; | |
4854 | struct nfs4_state *state; | |
4855 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4856 | int status; | |
4857 | ||
4858 | /* verify open state */ | |
cd3758e3 | 4859 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4860 | state = ctx->state; |
4861 | ||
4862 | if (request->fl_start < 0 || request->fl_end < 0) | |
4863 | return -EINVAL; | |
4864 | ||
d953126a TM |
4865 | if (IS_GETLK(cmd)) { |
4866 | if (state != NULL) | |
4867 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4868 | return 0; | |
4869 | } | |
1da177e4 LT |
4870 | |
4871 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4872 | return -EINVAL; | |
4873 | ||
d953126a TM |
4874 | if (request->fl_type == F_UNLCK) { |
4875 | if (state != NULL) | |
4876 | return nfs4_proc_unlck(state, cmd, request); | |
4877 | return 0; | |
4878 | } | |
1da177e4 | 4879 | |
d953126a TM |
4880 | if (state == NULL) |
4881 | return -ENOLCK; | |
55725513 TM |
4882 | /* |
4883 | * Don't rely on the VFS having checked the file open mode, | |
4884 | * since it won't do this for flock() locks. | |
4885 | */ | |
f44106e2 | 4886 | switch (request->fl_type) { |
55725513 TM |
4887 | case F_RDLCK: |
4888 | if (!(filp->f_mode & FMODE_READ)) | |
4889 | return -EBADF; | |
4890 | break; | |
4891 | case F_WRLCK: | |
4892 | if (!(filp->f_mode & FMODE_WRITE)) | |
4893 | return -EBADF; | |
4894 | } | |
4895 | ||
1da177e4 LT |
4896 | do { |
4897 | status = nfs4_proc_setlk(state, cmd, request); | |
4898 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4899 | break; | |
4900 | timeout = nfs4_set_lock_task_retry(timeout); | |
4901 | status = -ERESTARTSYS; | |
4902 | if (signalled()) | |
4903 | break; | |
4904 | } while(status < 0); | |
1da177e4 LT |
4905 | return status; |
4906 | } | |
4907 | ||
888e694c TM |
4908 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4909 | { | |
4910 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4911 | struct nfs4_exception exception = { }; | |
4912 | int err; | |
4913 | ||
4914 | err = nfs4_set_lock_state(state, fl); | |
4915 | if (err != 0) | |
4916 | goto out; | |
4917 | do { | |
afe6c27c | 4918 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4919 | switch (err) { |
4920 | default: | |
a030889a WAA |
4921 | printk(KERN_ERR "NFS: %s: unhandled error " |
4922 | "%d.\n", __func__, err); | |
d5122201 | 4923 | case 0: |
965b5d67 | 4924 | case -ESTALE: |
d5122201 TM |
4925 | goto out; |
4926 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4927 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4928 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4929 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4930 | nfs4_schedule_lease_recovery(server->nfs_client); |
4931 | goto out; | |
74e7bb73 RL |
4932 | case -NFS4ERR_BADSESSION: |
4933 | case -NFS4ERR_BADSLOT: | |
4934 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4935 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4936 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 4937 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
d5122201 | 4938 | goto out; |
965b5d67 TM |
4939 | case -ERESTARTSYS: |
4940 | /* | |
4941 | * The show must go on: exit, but mark the | |
4942 | * stateid as needing recovery. | |
4943 | */ | |
a1d0b5ee | 4944 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
4945 | case -NFS4ERR_ADMIN_REVOKED: |
4946 | case -NFS4ERR_BAD_STATEID: | |
4947 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4948 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4949 | err = 0; |
4950 | goto out; | |
168667c4 TM |
4951 | case -EKEYEXPIRED: |
4952 | /* | |
4953 | * User RPCSEC_GSS context has expired. | |
4954 | * We cannot recover this stateid now, so | |
4955 | * skip it and allow recovery thread to | |
4956 | * proceed. | |
4957 | */ | |
4958 | err = 0; | |
4959 | goto out; | |
965b5d67 TM |
4960 | case -ENOMEM: |
4961 | case -NFS4ERR_DENIED: | |
4962 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4963 | err = 0; | |
4964 | goto out; | |
d5122201 TM |
4965 | case -NFS4ERR_DELAY: |
4966 | break; | |
4967 | } | |
888e694c TM |
4968 | err = nfs4_handle_exception(server, err, &exception); |
4969 | } while (exception.retry); | |
4970 | out: | |
4971 | return err; | |
4972 | } | |
6b3b5496 | 4973 | |
cf470c3e TM |
4974 | struct nfs_release_lockowner_data { |
4975 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 4976 | struct nfs_server *server; |
cf470c3e TM |
4977 | struct nfs_release_lockowner_args args; |
4978 | }; | |
4979 | ||
d3c7b7cc TM |
4980 | static void nfs4_release_lockowner_release(void *calldata) |
4981 | { | |
cf470c3e | 4982 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 4983 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
4984 | kfree(calldata); |
4985 | } | |
4986 | ||
17280175 | 4987 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
4988 | .rpc_release = nfs4_release_lockowner_release, |
4989 | }; | |
4990 | ||
cf470c3e | 4991 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
4992 | { |
4993 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 4994 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
4995 | struct rpc_message msg = { |
4996 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4997 | }; | |
4998 | ||
4999 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5000 | return -EINVAL; |
5001 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5002 | if (!data) | |
5003 | return -ENOMEM; | |
5004 | data->lsp = lsp; | |
5ae67c4f | 5005 | data->server = server; |
cf470c3e TM |
5006 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5007 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5008 | data->args.lock_owner.s_dev = server->s_dev; | |
5009 | msg.rpc_argp = &data->args; | |
5010 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5011 | return 0; | |
d3c7b7cc TM |
5012 | } |
5013 | ||
aa1870af BF |
5014 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5015 | ||
64c2ce8b AK |
5016 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5017 | const void *buf, size_t buflen, | |
5018 | int flags, int type) | |
6b3b5496 | 5019 | { |
64c2ce8b AK |
5020 | if (strcmp(key, "") != 0) |
5021 | return -EINVAL; | |
4b580ee3 | 5022 | |
64c2ce8b | 5023 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5024 | } |
5025 | ||
64c2ce8b AK |
5026 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5027 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5028 | { |
64c2ce8b AK |
5029 | if (strcmp(key, "") != 0) |
5030 | return -EINVAL; | |
aa1870af | 5031 | |
64c2ce8b | 5032 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5033 | } |
5034 | ||
64c2ce8b AK |
5035 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5036 | size_t list_len, const char *name, | |
5037 | size_t name_len, int type) | |
6b3b5496 | 5038 | { |
64c2ce8b | 5039 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5040 | |
096455a2 BF |
5041 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5042 | return 0; | |
64c2ce8b AK |
5043 | |
5044 | if (list && len <= list_len) | |
5045 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5046 | return len; |
6b3b5496 BF |
5047 | } |
5048 | ||
533eb461 AA |
5049 | /* |
5050 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5051 | */ | |
69aaaae1 TM |
5052 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5053 | { | |
533eb461 AA |
5054 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5055 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5056 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5057 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5058 | return; |
5059 | ||
5060 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5061 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5062 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5063 | fattr->nlink = 2; | |
5064 | } | |
5065 | ||
f05d147f BS |
5066 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5067 | const struct qstr *name, | |
5068 | struct nfs4_fs_locations *fs_locations, | |
5069 | struct page *page) | |
683b57b4 TM |
5070 | { |
5071 | struct nfs_server *server = NFS_SERVER(dir); | |
5072 | u32 bitmask[2] = { | |
361e624f | 5073 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5074 | }; |
5075 | struct nfs4_fs_locations_arg args = { | |
5076 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5077 | .name = name, |
683b57b4 TM |
5078 | .page = page, |
5079 | .bitmask = bitmask, | |
5080 | }; | |
22958463 BH |
5081 | struct nfs4_fs_locations_res res = { |
5082 | .fs_locations = fs_locations, | |
5083 | }; | |
683b57b4 TM |
5084 | struct rpc_message msg = { |
5085 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5086 | .rpc_argp = &args, | |
22958463 | 5087 | .rpc_resp = &res, |
683b57b4 TM |
5088 | }; |
5089 | int status; | |
5090 | ||
3110ff80 | 5091 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5092 | |
5093 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5094 | * is not supported */ | |
5095 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5096 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5097 | else | |
5098 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5099 | ||
c228fd3a | 5100 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5101 | fs_locations->server = server; |
830b8e33 | 5102 | fs_locations->nlocations = 0; |
f05d147f | 5103 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5104 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5105 | return status; |
5106 | } | |
5107 | ||
f05d147f BS |
5108 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5109 | const struct qstr *name, | |
5110 | struct nfs4_fs_locations *fs_locations, | |
5111 | struct page *page) | |
db0a9593 BS |
5112 | { |
5113 | struct nfs4_exception exception = { }; | |
5114 | int err; | |
5115 | do { | |
5116 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5117 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5118 | &exception); |
5119 | } while (exception.retry); | |
5120 | return err; | |
5121 | } | |
5122 | ||
5a5ea0d4 BS |
5123 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5124 | { | |
5125 | int status; | |
5126 | struct nfs4_secinfo_arg args = { | |
5127 | .dir_fh = NFS_FH(dir), | |
5128 | .name = name, | |
5129 | }; | |
5130 | struct nfs4_secinfo_res res = { | |
5131 | .flavors = flavors, | |
5132 | }; | |
5133 | struct rpc_message msg = { | |
5134 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5135 | .rpc_argp = &args, | |
5136 | .rpc_resp = &res, | |
5137 | }; | |
5138 | ||
5139 | dprintk("NFS call secinfo %s\n", name->name); | |
5140 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5141 | dprintk("NFS reply secinfo: %d\n", status); | |
5142 | return status; | |
5143 | } | |
5144 | ||
72de53ec BS |
5145 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5146 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5147 | { |
5148 | struct nfs4_exception exception = { }; | |
5149 | int err; | |
5150 | do { | |
5151 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5152 | _nfs4_proc_secinfo(dir, name, flavors), | |
5153 | &exception); | |
5154 | } while (exception.retry); | |
5155 | return err; | |
5156 | } | |
5157 | ||
557134a3 | 5158 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5159 | /* |
5160 | * Check the exchange flags returned by the server for invalid flags, having | |
5161 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5162 | * DS flags set. | |
5163 | */ | |
5164 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5165 | { | |
5166 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5167 | goto out_inval; | |
5168 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5169 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5170 | goto out_inval; | |
5171 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5172 | goto out_inval; | |
5173 | return NFS_OK; | |
5174 | out_inval: | |
5175 | return -NFS4ERR_INVAL; | |
5176 | } | |
5177 | ||
78fe0f41 | 5178 | static bool |
79d4e1f0 CL |
5179 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5180 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5181 | { |
5182 | if (a->server_scope_sz == b->server_scope_sz && | |
5183 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5184 | return true; | |
5185 | ||
5186 | return false; | |
5187 | } | |
5188 | ||
7c44f1ae WAA |
5189 | /* |
5190 | * nfs4_proc_bind_conn_to_session() | |
5191 | * | |
5192 | * The 4.1 client currently uses the same TCP connection for the | |
5193 | * fore and backchannel. | |
5194 | */ | |
2cf047c9 | 5195 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5196 | { |
5197 | int status; | |
5198 | struct nfs41_bind_conn_to_session_res res; | |
5199 | struct rpc_message msg = { | |
5200 | .rpc_proc = | |
5201 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5202 | .rpc_argp = clp, | |
5203 | .rpc_resp = &res, | |
2cf047c9 | 5204 | .rpc_cred = cred, |
7c44f1ae WAA |
5205 | }; |
5206 | ||
5207 | dprintk("--> %s\n", __func__); | |
5208 | BUG_ON(clp == NULL); | |
5209 | ||
5210 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5211 | if (unlikely(res.session == NULL)) { | |
5212 | status = -ENOMEM; | |
5213 | goto out; | |
5214 | } | |
5215 | ||
5216 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5217 | if (status == 0) { | |
5218 | if (memcmp(res.session->sess_id.data, | |
5219 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5220 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5221 | status = -EIO; | |
5222 | goto out_session; | |
5223 | } | |
5224 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5225 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5226 | __func__); | |
5227 | status = -EIO; | |
5228 | goto out_session; | |
5229 | } | |
5230 | if (res.use_conn_in_rdma_mode) { | |
5231 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5232 | __func__); | |
5233 | status = -EIO; | |
5234 | goto out_session; | |
5235 | } | |
5236 | } | |
5237 | out_session: | |
5238 | kfree(res.session); | |
5239 | out: | |
5240 | dprintk("<-- %s status= %d\n", __func__, status); | |
5241 | return status; | |
5242 | } | |
5243 | ||
99fe60d0 BH |
5244 | /* |
5245 | * nfs4_proc_exchange_id() | |
5246 | * | |
6bbb4ae8 CL |
5247 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5248 | * | |
99fe60d0 BH |
5249 | * Since the clientid has expired, all compounds using sessions |
5250 | * associated with the stale clientid will be returning | |
5251 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5252 | * be in some phase of session reset. | |
5253 | */ | |
4d643d1d | 5254 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5255 | { |
5256 | nfs4_verifier verifier; | |
5257 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5258 | .verifier = &verifier, |
99fe60d0 | 5259 | .client = clp, |
357f54d6 | 5260 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5261 | }; |
5262 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5263 | 0 |
99fe60d0 BH |
5264 | }; |
5265 | int status; | |
5266 | struct rpc_message msg = { | |
5267 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5268 | .rpc_argp = &args, | |
5269 | .rpc_resp = &res, | |
5270 | .rpc_cred = cred, | |
5271 | }; | |
99fe60d0 | 5272 | |
f092075d | 5273 | nfs4_init_boot_verifier(clp, &verifier); |
c7a360b0 | 5274 | args.id_len = scnprintf(args.id, sizeof(args.id), |
de734831 | 5275 | "%s/%s", |
c7a360b0 | 5276 | clp->cl_ipaddr, |
de734831 | 5277 | clp->cl_rpcclient->cl_nodename); |
6bbb4ae8 CL |
5278 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5279 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5280 | args.id_len, args.id); | |
99fe60d0 | 5281 | |
acdeb69d | 5282 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5283 | GFP_NOFS); |
acdeb69d | 5284 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5285 | status = -ENOMEM; |
5286 | goto out; | |
5287 | } | |
78fe0f41 | 5288 | |
79d4e1f0 | 5289 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5290 | GFP_NOFS); |
177313f1 | 5291 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5292 | status = -ENOMEM; |
acdeb69d | 5293 | goto out_server_owner; |
abe9a6d5 | 5294 | } |
78fe0f41 | 5295 | |
bbafffd2 | 5296 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5297 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5298 | status = -ENOMEM; |
5299 | goto out_server_scope; | |
5300 | } | |
5301 | ||
1bd714f2 | 5302 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5303 | if (status == 0) |
32b01310 | 5304 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5305 | |
acdeb69d | 5306 | if (status == 0) { |
32b01310 TM |
5307 | clp->cl_clientid = res.clientid; |
5308 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5309 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5310 | clp->cl_seqid = res.seqid; | |
5311 | ||
acdeb69d CL |
5312 | kfree(clp->cl_serverowner); |
5313 | clp->cl_serverowner = res.server_owner; | |
5314 | res.server_owner = NULL; | |
78fe0f41 | 5315 | |
7d2ed9ac | 5316 | /* use the most recent implementation id */ |
59155546 CL |
5317 | kfree(clp->cl_implid); |
5318 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5319 | |
177313f1 | 5320 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5321 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5322 | res.server_scope)) { |
5323 | dprintk("%s: server_scope mismatch detected\n", | |
5324 | __func__); | |
5325 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5326 | kfree(clp->cl_serverscope); |
5327 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5328 | } |
5329 | ||
177313f1 | 5330 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5331 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5332 | goto out; |
5333 | } | |
32b01310 TM |
5334 | } else |
5335 | kfree(res.impl_id); | |
7d2ed9ac | 5336 | |
acdeb69d CL |
5337 | out_server_owner: |
5338 | kfree(res.server_owner); | |
7d2ed9ac | 5339 | out_server_scope: |
abe9a6d5 WAA |
5340 | kfree(res.server_scope); |
5341 | out: | |
177313f1 | 5342 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5343 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5344 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5345 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5346 | clp->cl_implid->date.seconds, |
5347 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5348 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5349 | return status; |
5350 | } | |
5351 | ||
66245539 TM |
5352 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5353 | struct rpc_cred *cred) | |
5354 | { | |
5355 | struct rpc_message msg = { | |
5356 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5357 | .rpc_argp = clp, | |
5358 | .rpc_cred = cred, | |
5359 | }; | |
5360 | int status; | |
5361 | ||
5362 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5363 | if (status) | |
02c67525 | 5364 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5365 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5366 | return status; | |
5367 | } | |
5368 | ||
5369 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5370 | struct rpc_cred *cred) | |
5371 | { | |
5372 | unsigned int loop; | |
5373 | int ret; | |
5374 | ||
5375 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5376 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5377 | switch (ret) { | |
5378 | case -NFS4ERR_DELAY: | |
5379 | case -NFS4ERR_CLIENTID_BUSY: | |
5380 | ssleep(1); | |
5381 | break; | |
5382 | default: | |
5383 | return ret; | |
5384 | } | |
5385 | } | |
5386 | return 0; | |
5387 | } | |
5388 | ||
5389 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5390 | { | |
5391 | struct rpc_cred *cred; | |
5392 | int ret = 0; | |
5393 | ||
5394 | if (clp->cl_mvops->minor_version < 1) | |
5395 | goto out; | |
5396 | if (clp->cl_exchange_flags == 0) | |
5397 | goto out; | |
5398 | cred = nfs4_get_exchange_id_cred(clp); | |
5399 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5400 | if (cred) | |
5401 | put_rpccred(cred); | |
5402 | switch (ret) { | |
5403 | case 0: | |
5404 | case -NFS4ERR_STALE_CLIENTID: | |
5405 | clp->cl_exchange_flags = 0; | |
5406 | } | |
5407 | out: | |
5408 | return ret; | |
5409 | } | |
5410 | ||
2050f0cc AA |
5411 | struct nfs4_get_lease_time_data { |
5412 | struct nfs4_get_lease_time_args *args; | |
5413 | struct nfs4_get_lease_time_res *res; | |
5414 | struct nfs_client *clp; | |
5415 | }; | |
5416 | ||
5417 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5418 | void *calldata) | |
5419 | { | |
5420 | int ret; | |
5421 | struct nfs4_get_lease_time_data *data = | |
5422 | (struct nfs4_get_lease_time_data *)calldata; | |
5423 | ||
5424 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5425 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5426 | /* just setup sequence, do not trigger session recovery |
5427 | since we're invoked within one */ | |
5428 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5429 | &data->args->la_seq_args, |
9d12b216 | 5430 | &data->res->lr_seq_res, task); |
2050f0cc AA |
5431 | |
5432 | BUG_ON(ret == -EAGAIN); | |
5433 | rpc_call_start(task); | |
5434 | dprintk("<-- %s\n", __func__); | |
5435 | } | |
5436 | ||
5437 | /* | |
5438 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5439 | * from sequence operation or clientid errors. | |
5440 | */ | |
5441 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5442 | { | |
5443 | struct nfs4_get_lease_time_data *data = | |
5444 | (struct nfs4_get_lease_time_data *)calldata; | |
5445 | ||
5446 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5447 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5448 | return; | |
2050f0cc AA |
5449 | switch (task->tk_status) { |
5450 | case -NFS4ERR_DELAY: | |
5451 | case -NFS4ERR_GRACE: | |
5452 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5453 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5454 | task->tk_status = 0; | |
a8a4ae3a AA |
5455 | /* fall through */ |
5456 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5457 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5458 | return; |
5459 | } | |
2050f0cc AA |
5460 | dprintk("<-- %s\n", __func__); |
5461 | } | |
5462 | ||
17280175 | 5463 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5464 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5465 | .rpc_call_done = nfs4_get_lease_time_done, | |
5466 | }; | |
5467 | ||
5468 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5469 | { | |
5470 | struct rpc_task *task; | |
5471 | struct nfs4_get_lease_time_args args; | |
5472 | struct nfs4_get_lease_time_res res = { | |
5473 | .lr_fsinfo = fsinfo, | |
5474 | }; | |
5475 | struct nfs4_get_lease_time_data data = { | |
5476 | .args = &args, | |
5477 | .res = &res, | |
5478 | .clp = clp, | |
5479 | }; | |
5480 | struct rpc_message msg = { | |
5481 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5482 | .rpc_argp = &args, | |
5483 | .rpc_resp = &res, | |
5484 | }; | |
5485 | struct rpc_task_setup task_setup = { | |
5486 | .rpc_client = clp->cl_rpcclient, | |
5487 | .rpc_message = &msg, | |
5488 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5489 | .callback_data = &data, |
5490 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5491 | }; |
5492 | int status; | |
5493 | ||
9d12b216 | 5494 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5495 | dprintk("--> %s\n", __func__); |
5496 | task = rpc_run_task(&task_setup); | |
5497 | ||
5498 | if (IS_ERR(task)) | |
5499 | status = PTR_ERR(task); | |
5500 | else { | |
5501 | status = task->tk_status; | |
5502 | rpc_put_task(task); | |
5503 | } | |
5504 | dprintk("<-- %s return %d\n", __func__, status); | |
5505 | ||
5506 | return status; | |
5507 | } | |
5508 | ||
f86f36a6 TM |
5509 | static struct nfs4_slot *nfs4_alloc_slots(u32 max_slots, gfp_t gfp_flags) |
5510 | { | |
5511 | return kcalloc(max_slots, sizeof(struct nfs4_slot), gfp_flags); | |
5512 | } | |
5513 | ||
5514 | static void nfs4_add_and_init_slots(struct nfs4_slot_table *tbl, | |
5515 | struct nfs4_slot *new, | |
5516 | u32 max_slots, | |
5517 | u32 ivalue) | |
5518 | { | |
5519 | struct nfs4_slot *old = NULL; | |
5520 | u32 i; | |
5521 | ||
5522 | spin_lock(&tbl->slot_tbl_lock); | |
5523 | if (new) { | |
5524 | old = tbl->slots; | |
5525 | tbl->slots = new; | |
5526 | tbl->max_slots = max_slots; | |
5527 | } | |
5528 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5529 | for (i = 0; i < tbl->max_slots; i++) | |
5530 | tbl->slots[i].seq_nr = ivalue; | |
5531 | spin_unlock(&tbl->slot_tbl_lock); | |
5532 | kfree(old); | |
5533 | } | |
5534 | ||
b73dafa7 | 5535 | /* |
f86f36a6 | 5536 | * (re)Initialise a slot table |
b73dafa7 | 5537 | */ |
f86f36a6 TM |
5538 | static int nfs4_realloc_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5539 | u32 ivalue) | |
ac72b7b3 | 5540 | { |
104aeba4 | 5541 | struct nfs4_slot *new = NULL; |
f86f36a6 | 5542 | int ret = -ENOMEM; |
ac72b7b3 | 5543 | |
104aeba4 AA |
5544 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5545 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5546 | |
104aeba4 AA |
5547 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5548 | if (max_reqs != tbl->max_slots) { | |
f86f36a6 | 5549 | new = nfs4_alloc_slots(max_reqs, GFP_NOFS); |
104aeba4 AA |
5550 | if (!new) |
5551 | goto out; | |
104aeba4 | 5552 | } |
f86f36a6 TM |
5553 | ret = 0; |
5554 | ||
5555 | nfs4_add_and_init_slots(tbl, new, max_reqs, ivalue); | |
ac72b7b3 AA |
5556 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, |
5557 | tbl, tbl->slots, tbl->max_slots); | |
5558 | out: | |
5559 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5560 | return ret; | |
5561 | } | |
5562 | ||
f8625a6a RL |
5563 | /* Destroy the slot table */ |
5564 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5565 | { | |
5566 | if (session->fc_slot_table.slots != NULL) { | |
5567 | kfree(session->fc_slot_table.slots); | |
5568 | session->fc_slot_table.slots = NULL; | |
5569 | } | |
5570 | if (session->bc_slot_table.slots != NULL) { | |
5571 | kfree(session->bc_slot_table.slots); | |
5572 | session->bc_slot_table.slots = NULL; | |
5573 | } | |
5574 | return; | |
5575 | } | |
5576 | ||
050047ce | 5577 | /* |
aacd5537 | 5578 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5579 | */ |
aacd5537 | 5580 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5581 | { |
f26468fb | 5582 | struct nfs4_slot_table *tbl; |
aacd5537 | 5583 | int status; |
050047ce | 5584 | |
aacd5537 AA |
5585 | dprintk("--> %s\n", __func__); |
5586 | /* Fore channel */ | |
5587 | tbl = &ses->fc_slot_table; | |
f86f36a6 TM |
5588 | status = nfs4_realloc_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5589 | if (status) /* -ENOMEM */ | |
5590 | return status; | |
aacd5537 AA |
5591 | /* Back channel */ |
5592 | tbl = &ses->bc_slot_table; | |
f86f36a6 TM |
5593 | status = nfs4_realloc_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
5594 | if (status && tbl->slots == NULL) | |
5595 | /* Fore and back channel share a connection so get | |
5596 | * both slot tables or neither */ | |
5597 | nfs4_destroy_slot_tables(ses); | |
f8625a6a | 5598 | return status; |
557134a3 AA |
5599 | } |
5600 | ||
5601 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5602 | { | |
5603 | struct nfs4_session *session; | |
5604 | struct nfs4_slot_table *tbl; | |
5605 | ||
8535b2be | 5606 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5607 | if (!session) |
5608 | return NULL; | |
76db6d95 | 5609 | |
557134a3 | 5610 | tbl = &session->fc_slot_table; |
45d43c29 | 5611 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5612 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5613 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5614 | init_completion(&tbl->complete); |
f8625a6a RL |
5615 | |
5616 | tbl = &session->bc_slot_table; | |
45d43c29 | 5617 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5618 | spin_lock_init(&tbl->slot_tbl_lock); |
5619 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5620 | init_completion(&tbl->complete); |
f8625a6a | 5621 | |
1055d76d TM |
5622 | session->session_state = 1<<NFS4_SESSION_INITING; |
5623 | ||
557134a3 AA |
5624 | session->clp = clp; |
5625 | return session; | |
5626 | } | |
5627 | ||
5628 | void nfs4_destroy_session(struct nfs4_session *session) | |
5629 | { | |
2446ab60 | 5630 | struct rpc_xprt *xprt; |
848f5bda | 5631 | struct rpc_cred *cred; |
2446ab60 | 5632 | |
848f5bda TM |
5633 | cred = nfs4_get_exchange_id_cred(session->clp); |
5634 | nfs4_proc_destroy_session(session, cred); | |
5635 | if (cred) | |
5636 | put_rpccred(cred); | |
2446ab60 TM |
5637 | |
5638 | rcu_read_lock(); | |
5639 | xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); | |
5640 | rcu_read_unlock(); | |
5a0ffe54 | 5641 | dprintk("%s Destroy backchannel for xprt %p\n", |
2446ab60 TM |
5642 | __func__, xprt); |
5643 | xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5644 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5645 | kfree(session); |
5646 | } | |
5647 | ||
fc931582 AA |
5648 | /* |
5649 | * Initialize the values to be used by the client in CREATE_SESSION | |
5650 | * If nfs4_init_session set the fore channel request and response sizes, | |
5651 | * use them. | |
5652 | * | |
5653 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5654 | * always set csa_cachethis to FALSE because the current implementation | |
5655 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5656 | */ | |
5657 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5658 | { | |
5659 | struct nfs4_session *session = args->client->cl_session; | |
5660 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5661 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5662 | ||
5663 | if (mxrqst_sz == 0) | |
5664 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5665 | if (mxresp_sz == 0) | |
5666 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5667 | /* Fore channel attributes */ | |
fc931582 AA |
5668 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5669 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5670 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5671 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5672 | |
5673 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5674 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5675 | __func__, |
5676 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5677 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5678 | |
5679 | /* Back channel attributes */ | |
fc931582 AA |
5680 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5681 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5682 | args->bc_attrs.max_resp_sz_cached = 0; | |
5683 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5684 | args->bc_attrs.max_reqs = 1; | |
5685 | ||
5686 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5687 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5688 | __func__, | |
5689 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5690 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5691 | args->bc_attrs.max_reqs); | |
5692 | } | |
5693 | ||
43c2e885 | 5694 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5695 | { |
43c2e885 BF |
5696 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5697 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5698 | ||
43c2e885 BF |
5699 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5700 | return -EINVAL; | |
5701 | /* | |
5702 | * Our requested max_ops is the minimum we need; we're not | |
5703 | * prepared to break up compounds into smaller pieces than that. | |
5704 | * So, no point even trying to continue if the server won't | |
5705 | * cooperate: | |
5706 | */ | |
5707 | if (rcvd->max_ops < sent->max_ops) | |
5708 | return -EINVAL; | |
5709 | if (rcvd->max_reqs == 0) | |
5710 | return -EINVAL; | |
b4b9a0c1 VG |
5711 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5712 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5713 | return 0; |
8d35301d AA |
5714 | } |
5715 | ||
43c2e885 BF |
5716 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5717 | { | |
5718 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5719 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5720 | |
43c2e885 BF |
5721 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5722 | return -EINVAL; | |
5723 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5724 | return -EINVAL; | |
5725 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5726 | return -EINVAL; | |
5727 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5728 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5729 | return -EINVAL; |
b4b9a0c1 | 5730 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5731 | return -EINVAL; |
5732 | return 0; | |
5733 | } | |
8d35301d | 5734 | |
8d35301d AA |
5735 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5736 | struct nfs4_session *session) | |
5737 | { | |
43c2e885 | 5738 | int ret; |
8d35301d | 5739 | |
43c2e885 BF |
5740 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5741 | if (ret) | |
5742 | return ret; | |
5743 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5744 | } |
5745 | ||
848f5bda TM |
5746 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5747 | struct rpc_cred *cred) | |
fc931582 AA |
5748 | { |
5749 | struct nfs4_session *session = clp->cl_session; | |
5750 | struct nfs41_create_session_args args = { | |
5751 | .client = clp, | |
5752 | .cb_program = NFS4_CALLBACK, | |
5753 | }; | |
5754 | struct nfs41_create_session_res res = { | |
5755 | .client = clp, | |
5756 | }; | |
5757 | struct rpc_message msg = { | |
5758 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5759 | .rpc_argp = &args, | |
5760 | .rpc_resp = &res, | |
848f5bda | 5761 | .rpc_cred = cred, |
fc931582 AA |
5762 | }; |
5763 | int status; | |
5764 | ||
5765 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5766 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5767 | |
1bd714f2 | 5768 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5769 | |
8d35301d AA |
5770 | if (!status) |
5771 | /* Verify the session's negotiated channel_attrs values */ | |
5772 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5773 | if (!status) { |
5774 | /* Increment the clientid slot sequence id */ | |
5775 | clp->cl_seqid++; | |
5776 | } | |
5777 | ||
5778 | return status; | |
5779 | } | |
5780 | ||
5781 | /* | |
5782 | * Issues a CREATE_SESSION operation to the server. | |
5783 | * It is the responsibility of the caller to verify the session is | |
5784 | * expired before calling this routine. | |
5785 | */ | |
848f5bda | 5786 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5787 | { |
5788 | int status; | |
5789 | unsigned *ptr; | |
fc931582 AA |
5790 | struct nfs4_session *session = clp->cl_session; |
5791 | ||
5792 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5793 | ||
848f5bda | 5794 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5795 | if (status) |
5796 | goto out; | |
5797 | ||
aacd5537 AA |
5798 | /* Init or reset the session slot tables */ |
5799 | status = nfs4_setup_session_slot_tables(session); | |
5800 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5801 | if (status) |
5802 | goto out; | |
5803 | ||
5804 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5805 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5806 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5807 | out: |
5808 | dprintk("<-- %s\n", __func__); | |
5809 | return status; | |
5810 | } | |
5811 | ||
0f3e66c6 AA |
5812 | /* |
5813 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5814 | * The caller must serialize access to this routine. | |
5815 | */ | |
848f5bda TM |
5816 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5817 | struct rpc_cred *cred) | |
0f3e66c6 | 5818 | { |
848f5bda TM |
5819 | struct rpc_message msg = { |
5820 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5821 | .rpc_argp = session, | |
5822 | .rpc_cred = cred, | |
5823 | }; | |
0f3e66c6 | 5824 | int status = 0; |
0f3e66c6 AA |
5825 | |
5826 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5827 | ||
5828 | /* session is still being setup */ | |
5829 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5830 | return status; | |
5831 | ||
1bd714f2 | 5832 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5833 | |
5834 | if (status) | |
08106ac7 | 5835 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5836 | "Session has been destroyed regardless...\n", status); |
5837 | ||
5838 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5839 | return status; | |
5840 | } | |
5841 | ||
7b38c368 TM |
5842 | /* |
5843 | * With sessions, the client is not marked ready until after a | |
5844 | * successful EXCHANGE_ID and CREATE_SESSION. | |
5845 | * | |
5846 | * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate | |
5847 | * other versions of NFS can be tried. | |
5848 | */ | |
5849 | static int nfs41_check_session_ready(struct nfs_client *clp) | |
5850 | { | |
5851 | int ret; | |
5852 | ||
5853 | if (clp->cl_cons_state == NFS_CS_SESSION_INITING) { | |
5854 | ret = nfs4_client_recover_expired_lease(clp); | |
5855 | if (ret) | |
5856 | return ret; | |
5857 | } | |
5858 | if (clp->cl_cons_state < NFS_CS_READY) | |
5859 | return -EPROTONOSUPPORT; | |
54ac471c | 5860 | smp_rmb(); |
7b38c368 TM |
5861 | return 0; |
5862 | } | |
5863 | ||
fccba804 TM |
5864 | int nfs4_init_session(struct nfs_server *server) |
5865 | { | |
5866 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5867 | struct nfs4_session *session; |
68bf05ef | 5868 | unsigned int rsize, wsize; |
fccba804 TM |
5869 | |
5870 | if (!nfs4_has_session(clp)) | |
5871 | return 0; | |
5872 | ||
1055d76d | 5873 | session = clp->cl_session; |
7b38c368 TM |
5874 | spin_lock(&clp->cl_lock); |
5875 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
1055d76d | 5876 | |
7b38c368 TM |
5877 | rsize = server->rsize; |
5878 | if (rsize == 0) | |
5879 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5880 | wsize = server->wsize; | |
5881 | if (wsize == 0) | |
5882 | wsize = NFS_MAX_FILE_IO_SIZE; | |
68bf05ef | 5883 | |
7b38c368 TM |
5884 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5885 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
5886 | } | |
5887 | spin_unlock(&clp->cl_lock); | |
2449ea2e | 5888 | |
7b38c368 | 5889 | return nfs41_check_session_ready(clp); |
fccba804 TM |
5890 | } |
5891 | ||
7b38c368 | 5892 | int nfs4_init_ds_session(struct nfs_client *clp, unsigned long lease_time) |
d83217c1 AA |
5893 | { |
5894 | struct nfs4_session *session = clp->cl_session; | |
5895 | int ret; | |
5896 | ||
7b38c368 TM |
5897 | spin_lock(&clp->cl_lock); |
5898 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
5899 | /* | |
5900 | * Do not set NFS_CS_CHECK_LEASE_TIME instead set the | |
5901 | * DS lease to be equal to the MDS lease. | |
5902 | */ | |
5903 | clp->cl_lease_time = lease_time; | |
5904 | clp->cl_last_renewal = jiffies; | |
5905 | } | |
5906 | spin_unlock(&clp->cl_lock); | |
d83217c1 | 5907 | |
7b38c368 TM |
5908 | ret = nfs41_check_session_ready(clp); |
5909 | if (ret) | |
5910 | return ret; | |
5911 | /* Test for the DS role */ | |
5912 | if (!is_ds_client(clp)) | |
5913 | return -ENODEV; | |
5914 | return 0; | |
d83217c1 AA |
5915 | } |
5916 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5917 | ||
5918 | ||
fc01cea9 AA |
5919 | /* |
5920 | * Renew the cl_session lease. | |
5921 | */ | |
d5f8d3fe TM |
5922 | struct nfs4_sequence_data { |
5923 | struct nfs_client *clp; | |
5924 | struct nfs4_sequence_args args; | |
5925 | struct nfs4_sequence_res res; | |
5926 | }; | |
5927 | ||
dc96aef9 AB |
5928 | static void nfs41_sequence_release(void *data) |
5929 | { | |
d5f8d3fe TM |
5930 | struct nfs4_sequence_data *calldata = data; |
5931 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5932 | |
7135840f AB |
5933 | if (atomic_read(&clp->cl_count) > 1) |
5934 | nfs4_schedule_state_renewal(clp); | |
5935 | nfs_put_client(clp); | |
d5f8d3fe | 5936 | kfree(calldata); |
dc96aef9 AB |
5937 | } |
5938 | ||
aa5190d0 TM |
5939 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5940 | { | |
5941 | switch(task->tk_status) { | |
5942 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5943 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5944 | return -EAGAIN; | |
5945 | default: | |
0400a6b0 | 5946 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5947 | } |
5948 | return 0; | |
5949 | } | |
5950 | ||
dc96aef9 | 5951 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5952 | { |
d5f8d3fe TM |
5953 | struct nfs4_sequence_data *calldata = data; |
5954 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5955 | |
14516c3a TM |
5956 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5957 | return; | |
fc01cea9 AA |
5958 | |
5959 | if (task->tk_status < 0) { | |
5960 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5961 | if (atomic_read(&clp->cl_count) == 1) |
5962 | goto out; | |
fc01cea9 | 5963 | |
aa5190d0 TM |
5964 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5965 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5966 | return; |
5967 | } | |
5968 | } | |
fc01cea9 | 5969 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5970 | out: |
fc01cea9 AA |
5971 | dprintk("<-- %s\n", __func__); |
5972 | } | |
5973 | ||
5974 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5975 | { | |
d5f8d3fe TM |
5976 | struct nfs4_sequence_data *calldata = data; |
5977 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5978 | struct nfs4_sequence_args *args; |
5979 | struct nfs4_sequence_res *res; | |
5980 | ||
fc01cea9 AA |
5981 | args = task->tk_msg.rpc_argp; |
5982 | res = task->tk_msg.rpc_resp; | |
5983 | ||
9d12b216 | 5984 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
5985 | return; |
5986 | rpc_call_start(task); | |
5987 | } | |
5988 | ||
5989 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5990 | .rpc_call_done = nfs41_sequence_call_done, | |
5991 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5992 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5993 | }; |
5994 | ||
71ac6da9 | 5995 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5996 | { |
d5f8d3fe | 5997 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5998 | struct rpc_message msg = { |
5999 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6000 | .rpc_cred = cred, | |
6001 | }; | |
71ac6da9 TM |
6002 | struct rpc_task_setup task_setup_data = { |
6003 | .rpc_client = clp->cl_rpcclient, | |
6004 | .rpc_message = &msg, | |
6005 | .callback_ops = &nfs41_sequence_ops, | |
6006 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
6007 | }; | |
fc01cea9 | 6008 | |
7135840f | 6009 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6010 | return ERR_PTR(-EIO); |
dfb4f309 | 6011 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6012 | if (calldata == NULL) { |
7135840f | 6013 | nfs_put_client(clp); |
71ac6da9 | 6014 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6015 | } |
9d12b216 | 6016 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
6017 | msg.rpc_argp = &calldata->args; |
6018 | msg.rpc_resp = &calldata->res; | |
6019 | calldata->clp = clp; | |
71ac6da9 | 6020 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6021 | |
71ac6da9 TM |
6022 | return rpc_run_task(&task_setup_data); |
6023 | } | |
6024 | ||
2f60ea6b | 6025 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6026 | { |
6027 | struct rpc_task *task; | |
6028 | int ret = 0; | |
6029 | ||
2f60ea6b TM |
6030 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6031 | return 0; | |
71ac6da9 TM |
6032 | task = _nfs41_proc_sequence(clp, cred); |
6033 | if (IS_ERR(task)) | |
6034 | ret = PTR_ERR(task); | |
6035 | else | |
bf294b41 | 6036 | rpc_put_task_async(task); |
71ac6da9 TM |
6037 | dprintk("<-- %s status=%d\n", __func__, ret); |
6038 | return ret; | |
6039 | } | |
6040 | ||
6041 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6042 | { | |
6043 | struct rpc_task *task; | |
6044 | int ret; | |
6045 | ||
6046 | task = _nfs41_proc_sequence(clp, cred); | |
6047 | if (IS_ERR(task)) { | |
6048 | ret = PTR_ERR(task); | |
6049 | goto out; | |
6050 | } | |
6051 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6052 | if (!ret) { |
6053 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6054 | ||
6055 | if (task->tk_status == 0) | |
6056 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6057 | ret = task->tk_status; |
b4410c2f | 6058 | } |
71ac6da9 TM |
6059 | rpc_put_task(task); |
6060 | out: | |
6061 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6062 | return ret; | |
fc01cea9 AA |
6063 | } |
6064 | ||
fce5c838 RL |
6065 | struct nfs4_reclaim_complete_data { |
6066 | struct nfs_client *clp; | |
6067 | struct nfs41_reclaim_complete_args arg; | |
6068 | struct nfs41_reclaim_complete_res res; | |
6069 | }; | |
6070 | ||
6071 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6072 | { | |
6073 | struct nfs4_reclaim_complete_data *calldata = data; | |
6074 | ||
b257957e | 6075 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
6076 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
6077 | &calldata->arg.seq_args, | |
9d12b216 | 6078 | &calldata->res.seq_res, task)) |
fce5c838 RL |
6079 | return; |
6080 | ||
6081 | rpc_call_start(task); | |
6082 | } | |
6083 | ||
aa5190d0 TM |
6084 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6085 | { | |
6086 | switch(task->tk_status) { | |
6087 | case 0: | |
6088 | case -NFS4ERR_COMPLETE_ALREADY: | |
6089 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6090 | break; | |
6091 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6092 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6093 | /* fall through */ |
6094 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6095 | return -EAGAIN; |
6096 | default: | |
0400a6b0 | 6097 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6098 | } |
6099 | return 0; | |
6100 | } | |
6101 | ||
fce5c838 RL |
6102 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6103 | { | |
6104 | struct nfs4_reclaim_complete_data *calldata = data; | |
6105 | struct nfs_client *clp = calldata->clp; | |
6106 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6107 | ||
6108 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6109 | if (!nfs41_sequence_done(task, res)) |
6110 | return; | |
fce5c838 | 6111 | |
aa5190d0 TM |
6112 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6113 | rpc_restart_call_prepare(task); | |
6114 | return; | |
6115 | } | |
fce5c838 RL |
6116 | dprintk("<-- %s\n", __func__); |
6117 | } | |
6118 | ||
6119 | static void nfs4_free_reclaim_complete_data(void *data) | |
6120 | { | |
6121 | struct nfs4_reclaim_complete_data *calldata = data; | |
6122 | ||
6123 | kfree(calldata); | |
6124 | } | |
6125 | ||
6126 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6127 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6128 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6129 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6130 | }; | |
6131 | ||
6132 | /* | |
6133 | * Issue a global reclaim complete. | |
6134 | */ | |
6135 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
6136 | { | |
6137 | struct nfs4_reclaim_complete_data *calldata; | |
6138 | struct rpc_task *task; | |
6139 | struct rpc_message msg = { | |
6140 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
6141 | }; | |
6142 | struct rpc_task_setup task_setup_data = { | |
6143 | .rpc_client = clp->cl_rpcclient, | |
6144 | .rpc_message = &msg, | |
6145 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6146 | .flags = RPC_TASK_ASYNC, | |
6147 | }; | |
6148 | int status = -ENOMEM; | |
6149 | ||
6150 | dprintk("--> %s\n", __func__); | |
8535b2be | 6151 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6152 | if (calldata == NULL) |
6153 | goto out; | |
6154 | calldata->clp = clp; | |
6155 | calldata->arg.one_fs = 0; | |
fce5c838 | 6156 | |
9d12b216 | 6157 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
6158 | msg.rpc_argp = &calldata->arg; |
6159 | msg.rpc_resp = &calldata->res; | |
6160 | task_setup_data.callback_data = calldata; | |
6161 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6162 | if (IS_ERR(task)) { |
fce5c838 | 6163 | status = PTR_ERR(task); |
acf82b85 DC |
6164 | goto out; |
6165 | } | |
c34c32ea AA |
6166 | status = nfs4_wait_for_completion_rpc_task(task); |
6167 | if (status == 0) | |
6168 | status = task->tk_status; | |
fce5c838 | 6169 | rpc_put_task(task); |
acf82b85 | 6170 | return 0; |
fce5c838 RL |
6171 | out: |
6172 | dprintk("<-- %s status=%d\n", __func__, status); | |
6173 | return status; | |
6174 | } | |
b1f69b75 AA |
6175 | |
6176 | static void | |
6177 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6178 | { | |
6179 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6180 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
6181 | |
6182 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6183 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6184 | * right now covering the LAYOUTGET we are about to send. | |
6185 | * However, that is not so catastrophic, and there seems | |
6186 | * to be no way to prevent it completely. | |
6187 | */ | |
b1f69b75 | 6188 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 6189 | &lgp->res.seq_res, task)) |
b1f69b75 | 6190 | return; |
cf7d63f1 FI |
6191 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6192 | NFS_I(lgp->args.inode)->layout, | |
6193 | lgp->args.ctx->state)) { | |
6194 | rpc_exit(task, NFS4_OK); | |
6195 | return; | |
6196 | } | |
b1f69b75 AA |
6197 | rpc_call_start(task); |
6198 | } | |
6199 | ||
6200 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6201 | { | |
6202 | struct nfs4_layoutget *lgp = calldata; | |
6203 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
6204 | ||
6205 | dprintk("--> %s\n", __func__); | |
6206 | ||
6207 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
6208 | return; | |
6209 | ||
6210 | switch (task->tk_status) { | |
6211 | case 0: | |
6212 | break; | |
6213 | case -NFS4ERR_LAYOUTTRYLATER: | |
6214 | case -NFS4ERR_RECALLCONFLICT: | |
6215 | task->tk_status = -NFS4ERR_DELAY; | |
6216 | /* Fall through */ | |
6217 | default: | |
6218 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6219 | rpc_restart_call_prepare(task); | |
6220 | return; | |
6221 | } | |
6222 | } | |
b1f69b75 AA |
6223 | dprintk("<-- %s\n", __func__); |
6224 | } | |
6225 | ||
6226 | static void nfs4_layoutget_release(void *calldata) | |
6227 | { | |
6228 | struct nfs4_layoutget *lgp = calldata; | |
6229 | ||
6230 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
6231 | put_nfs_open_context(lgp->args.ctx); |
6232 | kfree(calldata); | |
6233 | dprintk("<-- %s\n", __func__); | |
6234 | } | |
6235 | ||
6236 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6237 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6238 | .rpc_call_done = nfs4_layoutget_done, | |
6239 | .rpc_release = nfs4_layoutget_release, | |
6240 | }; | |
6241 | ||
6242 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
6243 | { | |
6244 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
6245 | struct rpc_task *task; | |
6246 | struct rpc_message msg = { | |
6247 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6248 | .rpc_argp = &lgp->args, | |
6249 | .rpc_resp = &lgp->res, | |
6250 | }; | |
6251 | struct rpc_task_setup task_setup_data = { | |
6252 | .rpc_client = server->client, | |
6253 | .rpc_message = &msg, | |
6254 | .callback_ops = &nfs4_layoutget_call_ops, | |
6255 | .callback_data = lgp, | |
6256 | .flags = RPC_TASK_ASYNC, | |
6257 | }; | |
6258 | int status = 0; | |
6259 | ||
6260 | dprintk("--> %s\n", __func__); | |
6261 | ||
35124a09 | 6262 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6263 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6264 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
6265 | task = rpc_run_task(&task_setup_data); |
6266 | if (IS_ERR(task)) | |
6267 | return PTR_ERR(task); | |
6268 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
6269 | if (status == 0) |
6270 | status = task->tk_status; | |
6271 | if (status == 0) | |
6272 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
6273 | rpc_put_task(task); |
6274 | dprintk("<-- %s status=%d\n", __func__, status); | |
6275 | return status; | |
6276 | } | |
6277 | ||
cbe82603 BH |
6278 | static void |
6279 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6280 | { | |
6281 | struct nfs4_layoutreturn *lrp = calldata; | |
6282 | ||
6283 | dprintk("--> %s\n", __func__); | |
6284 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 6285 | &lrp->res.seq_res, task)) |
cbe82603 BH |
6286 | return; |
6287 | rpc_call_start(task); | |
6288 | } | |
6289 | ||
6290 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6291 | { | |
6292 | struct nfs4_layoutreturn *lrp = calldata; | |
6293 | struct nfs_server *server; | |
a56aaa02 | 6294 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6295 | |
6296 | dprintk("--> %s\n", __func__); | |
6297 | ||
6298 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
6299 | return; | |
6300 | ||
6301 | server = NFS_SERVER(lrp->args.inode); | |
6302 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6303 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6304 | return; |
6305 | } | |
a2e1d4f2 | 6306 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 6307 | if (task->tk_status == 0) { |
cbe82603 | 6308 | if (lrp->res.lrs_present) { |
cbe82603 | 6309 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
6310 | } else |
6311 | BUG_ON(!list_empty(&lo->plh_segs)); | |
6312 | } | |
a2e1d4f2 FI |
6313 | lo->plh_block_lgets--; |
6314 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
6315 | dprintk("<-- %s\n", __func__); |
6316 | } | |
6317 | ||
6318 | static void nfs4_layoutreturn_release(void *calldata) | |
6319 | { | |
6320 | struct nfs4_layoutreturn *lrp = calldata; | |
6321 | ||
6322 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 6323 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6324 | kfree(calldata); |
6325 | dprintk("<-- %s\n", __func__); | |
6326 | } | |
6327 | ||
6328 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6329 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6330 | .rpc_call_done = nfs4_layoutreturn_done, | |
6331 | .rpc_release = nfs4_layoutreturn_release, | |
6332 | }; | |
6333 | ||
6334 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6335 | { | |
6336 | struct rpc_task *task; | |
6337 | struct rpc_message msg = { | |
6338 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6339 | .rpc_argp = &lrp->args, | |
6340 | .rpc_resp = &lrp->res, | |
6341 | }; | |
6342 | struct rpc_task_setup task_setup_data = { | |
6343 | .rpc_client = lrp->clp->cl_rpcclient, | |
6344 | .rpc_message = &msg, | |
6345 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6346 | .callback_data = lrp, | |
6347 | }; | |
6348 | int status; | |
6349 | ||
6350 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6351 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6352 | task = rpc_run_task(&task_setup_data); |
6353 | if (IS_ERR(task)) | |
6354 | return PTR_ERR(task); | |
6355 | status = task->tk_status; | |
6356 | dprintk("<-- %s status=%d\n", __func__, status); | |
6357 | rpc_put_task(task); | |
6358 | return status; | |
6359 | } | |
6360 | ||
7f11d8d3 AA |
6361 | /* |
6362 | * Retrieve the list of Data Server devices from the MDS. | |
6363 | */ | |
6364 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6365 | const struct nfs_fh *fh, | |
6366 | struct pnfs_devicelist *devlist) | |
6367 | { | |
6368 | struct nfs4_getdevicelist_args args = { | |
6369 | .fh = fh, | |
6370 | .layoutclass = server->pnfs_curr_ld->id, | |
6371 | }; | |
6372 | struct nfs4_getdevicelist_res res = { | |
6373 | .devlist = devlist, | |
6374 | }; | |
6375 | struct rpc_message msg = { | |
6376 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6377 | .rpc_argp = &args, | |
6378 | .rpc_resp = &res, | |
6379 | }; | |
6380 | int status; | |
6381 | ||
6382 | dprintk("--> %s\n", __func__); | |
6383 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6384 | &res.seq_res, 0); | |
6385 | dprintk("<-- %s status=%d\n", __func__, status); | |
6386 | return status; | |
6387 | } | |
6388 | ||
6389 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6390 | const struct nfs_fh *fh, | |
6391 | struct pnfs_devicelist *devlist) | |
6392 | { | |
6393 | struct nfs4_exception exception = { }; | |
6394 | int err; | |
6395 | ||
6396 | do { | |
6397 | err = nfs4_handle_exception(server, | |
6398 | _nfs4_getdevicelist(server, fh, devlist), | |
6399 | &exception); | |
6400 | } while (exception.retry); | |
6401 | ||
6402 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6403 | err, devlist->num_devs); | |
6404 | ||
6405 | return err; | |
6406 | } | |
6407 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6408 | ||
b1f69b75 AA |
6409 | static int |
6410 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6411 | { | |
6412 | struct nfs4_getdeviceinfo_args args = { | |
6413 | .pdev = pdev, | |
6414 | }; | |
6415 | struct nfs4_getdeviceinfo_res res = { | |
6416 | .pdev = pdev, | |
6417 | }; | |
6418 | struct rpc_message msg = { | |
6419 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6420 | .rpc_argp = &args, | |
6421 | .rpc_resp = &res, | |
6422 | }; | |
6423 | int status; | |
6424 | ||
6425 | dprintk("--> %s\n", __func__); | |
7c513058 | 6426 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6427 | dprintk("<-- %s status=%d\n", __func__, status); |
6428 | ||
6429 | return status; | |
6430 | } | |
6431 | ||
6432 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6433 | { | |
6434 | struct nfs4_exception exception = { }; | |
6435 | int err; | |
6436 | ||
6437 | do { | |
6438 | err = nfs4_handle_exception(server, | |
6439 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6440 | &exception); | |
6441 | } while (exception.retry); | |
6442 | return err; | |
6443 | } | |
6444 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6445 | ||
863a3c6c AA |
6446 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6447 | { | |
6448 | struct nfs4_layoutcommit_data *data = calldata; | |
6449 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6450 | ||
6451 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6452 | &data->res.seq_res, task)) |
863a3c6c AA |
6453 | return; |
6454 | rpc_call_start(task); | |
6455 | } | |
6456 | ||
6457 | static void | |
6458 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6459 | { | |
6460 | struct nfs4_layoutcommit_data *data = calldata; | |
6461 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6462 | ||
6463 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6464 | return; | |
6465 | ||
6466 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6467 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6468 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6469 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6470 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6471 | task->tk_status = 0; |
e59d27e0 TM |
6472 | break; |
6473 | case 0: | |
863a3c6c AA |
6474 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6475 | data->res.fattr); | |
e59d27e0 TM |
6476 | break; |
6477 | default: | |
6478 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6479 | rpc_restart_call_prepare(task); | |
6480 | return; | |
6481 | } | |
6482 | } | |
863a3c6c AA |
6483 | } |
6484 | ||
6485 | static void nfs4_layoutcommit_release(void *calldata) | |
6486 | { | |
6487 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6488 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6489 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6490 | |
db29c089 | 6491 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6492 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6493 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6494 | list_del_init(&lseg->pls_lc_list); | |
6495 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6496 | &lseg->pls_flags)) | |
6497 | put_lseg(lseg); | |
6498 | } | |
92407e75 PT |
6499 | |
6500 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6501 | smp_mb__after_clear_bit(); | |
6502 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6503 | ||
863a3c6c AA |
6504 | put_rpccred(data->cred); |
6505 | kfree(data); | |
6506 | } | |
6507 | ||
6508 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6509 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6510 | .rpc_call_done = nfs4_layoutcommit_done, | |
6511 | .rpc_release = nfs4_layoutcommit_release, | |
6512 | }; | |
6513 | ||
6514 | int | |
ef311537 | 6515 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6516 | { |
6517 | struct rpc_message msg = { | |
6518 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6519 | .rpc_argp = &data->args, | |
6520 | .rpc_resp = &data->res, | |
6521 | .rpc_cred = data->cred, | |
6522 | }; | |
6523 | struct rpc_task_setup task_setup_data = { | |
6524 | .task = &data->task, | |
6525 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6526 | .rpc_message = &msg, | |
6527 | .callback_ops = &nfs4_layoutcommit_ops, | |
6528 | .callback_data = data, | |
6529 | .flags = RPC_TASK_ASYNC, | |
6530 | }; | |
6531 | struct rpc_task *task; | |
6532 | int status = 0; | |
6533 | ||
6534 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6535 | "lbw: %llu inode %lu\n", | |
6536 | data->task.tk_pid, sync, | |
6537 | data->args.lastbytewritten, | |
6538 | data->args.inode->i_ino); | |
6539 | ||
9d12b216 | 6540 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6541 | task = rpc_run_task(&task_setup_data); |
6542 | if (IS_ERR(task)) | |
6543 | return PTR_ERR(task); | |
ef311537 | 6544 | if (sync == false) |
863a3c6c AA |
6545 | goto out; |
6546 | status = nfs4_wait_for_completion_rpc_task(task); | |
6547 | if (status != 0) | |
6548 | goto out; | |
6549 | status = task->tk_status; | |
6550 | out: | |
6551 | dprintk("%s: status %d\n", __func__, status); | |
6552 | rpc_put_task(task); | |
6553 | return status; | |
6554 | } | |
fca78d6d BS |
6555 | |
6556 | static int | |
6557 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6558 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6559 | { | |
6560 | struct nfs41_secinfo_no_name_args args = { | |
6561 | .style = SECINFO_STYLE_CURRENT_FH, | |
6562 | }; | |
6563 | struct nfs4_secinfo_res res = { | |
6564 | .flavors = flavors, | |
6565 | }; | |
6566 | struct rpc_message msg = { | |
6567 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6568 | .rpc_argp = &args, | |
6569 | .rpc_resp = &res, | |
6570 | }; | |
6571 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6572 | } | |
6573 | ||
6574 | static int | |
6575 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6576 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6577 | { | |
6578 | struct nfs4_exception exception = { }; | |
6579 | int err; | |
6580 | do { | |
6581 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6582 | switch (err) { | |
6583 | case 0: | |
6584 | case -NFS4ERR_WRONGSEC: | |
6585 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6586 | goto out; |
fca78d6d BS |
6587 | default: |
6588 | err = nfs4_handle_exception(server, err, &exception); | |
6589 | } | |
6590 | } while (exception.retry); | |
05e9cfb4 | 6591 | out: |
fca78d6d BS |
6592 | return err; |
6593 | } | |
6594 | ||
6595 | static int | |
6596 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6597 | struct nfs_fsinfo *info) | |
6598 | { | |
6599 | int err; | |
6600 | struct page *page; | |
6601 | rpc_authflavor_t flavor; | |
6602 | struct nfs4_secinfo_flavors *flavors; | |
6603 | ||
6604 | page = alloc_page(GFP_KERNEL); | |
6605 | if (!page) { | |
6606 | err = -ENOMEM; | |
6607 | goto out; | |
6608 | } | |
6609 | ||
6610 | flavors = page_address(page); | |
6611 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6612 | ||
6613 | /* | |
6614 | * Fall back on "guess and check" method if | |
6615 | * the server doesn't support SECINFO_NO_NAME | |
6616 | */ | |
6617 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6618 | err = nfs4_find_root_sec(server, fhandle, info); | |
6619 | goto out_freepage; | |
6620 | } | |
6621 | if (err) | |
6622 | goto out_freepage; | |
6623 | ||
6624 | flavor = nfs_find_best_sec(flavors); | |
6625 | if (err == 0) | |
6626 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6627 | ||
6628 | out_freepage: | |
6629 | put_page(page); | |
6630 | if (err == -EACCES) | |
6631 | return -EPERM; | |
6632 | out: | |
6633 | return err; | |
6634 | } | |
1cab0652 BS |
6635 | |
6636 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6637 | { |
6638 | int status; | |
6639 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6640 | .stateid = stateid, |
7d974794 BS |
6641 | }; |
6642 | struct nfs41_test_stateid_res res; | |
6643 | struct rpc_message msg = { | |
6644 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6645 | .rpc_argp = &args, | |
6646 | .rpc_resp = &res, | |
6647 | }; | |
1cab0652 | 6648 | |
38527b15 | 6649 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6650 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 | 6651 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
6652 | if (status != NFS_OK) { |
6653 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6654 | return status; |
38527b15 CL |
6655 | } |
6656 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6657 | return -res.status; |
7d974794 BS |
6658 | } |
6659 | ||
38527b15 CL |
6660 | /** |
6661 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6662 | * | |
6663 | * @server: server / transport on which to perform the operation | |
6664 | * @stateid: state ID to test | |
6665 | * | |
6666 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6667 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6668 | * failed or the state ID is not currently valid. | |
6669 | */ | |
1cab0652 | 6670 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6671 | { |
6672 | struct nfs4_exception exception = { }; | |
6673 | int err; | |
6674 | do { | |
377e507d CL |
6675 | err = _nfs41_test_stateid(server, stateid); |
6676 | if (err != -NFS4ERR_DELAY) | |
6677 | break; | |
6678 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6679 | } while (exception.retry); |
6680 | return err; | |
6681 | } | |
9aeda35f | 6682 | |
1cab0652 | 6683 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6684 | { |
9aeda35f | 6685 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6686 | .stateid = stateid, |
9aeda35f BS |
6687 | }; |
6688 | struct nfs41_free_stateid_res res; | |
6689 | struct rpc_message msg = { | |
6690 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6691 | .rpc_argp = &args, | |
6692 | .rpc_resp = &res, | |
6693 | }; | |
38527b15 | 6694 | int status; |
9aeda35f | 6695 | |
38527b15 | 6696 | dprintk("NFS call free_stateid %p\n", stateid); |
9d12b216 | 6697 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
38527b15 | 6698 | status = nfs4_call_sync_sequence(server->client, server, &msg, |
377e507d | 6699 | &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
6700 | dprintk("NFS reply free_stateid: %d\n", status); |
6701 | return status; | |
9aeda35f BS |
6702 | } |
6703 | ||
38527b15 CL |
6704 | /** |
6705 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6706 | * | |
6707 | * @server: server / transport on which to perform the operation | |
6708 | * @stateid: state ID to release | |
6709 | * | |
6710 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6711 | * negative NFS4ERR value is returned. | |
6712 | */ | |
1cab0652 | 6713 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6714 | { |
6715 | struct nfs4_exception exception = { }; | |
6716 | int err; | |
6717 | do { | |
377e507d CL |
6718 | err = _nfs4_free_stateid(server, stateid); |
6719 | if (err != -NFS4ERR_DELAY) | |
6720 | break; | |
6721 | nfs4_handle_exception(server, err, &exception); | |
9aeda35f BS |
6722 | } while (exception.retry); |
6723 | return err; | |
6724 | } | |
36281caa TM |
6725 | |
6726 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6727 | const nfs4_stateid *s2) | |
6728 | { | |
2d2f24ad | 6729 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6730 | return false; |
6731 | ||
2d2f24ad | 6732 | if (s1->seqid == s2->seqid) |
36281caa | 6733 | return true; |
2d2f24ad | 6734 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6735 | return true; |
6736 | ||
6737 | return false; | |
6738 | } | |
6739 | ||
557134a3 AA |
6740 | #endif /* CONFIG_NFS_V4_1 */ |
6741 | ||
36281caa TM |
6742 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6743 | const nfs4_stateid *s2) | |
6744 | { | |
f597c537 | 6745 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6746 | } |
6747 | ||
6748 | ||
17280175 | 6749 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6750 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6751 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6752 | .recover_open = nfs4_open_reclaim, |
6753 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6754 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6755 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6756 | }; |
6757 | ||
591d71cb | 6758 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6759 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6760 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6761 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6762 | .recover_open = nfs4_open_reclaim, | |
6763 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6764 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6765 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6766 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6767 | }; |
6768 | #endif /* CONFIG_NFS_V4_1 */ | |
6769 | ||
17280175 | 6770 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6771 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6772 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6773 | .recover_open = nfs4_open_expired, | |
6774 | .recover_lock = nfs4_lock_expired, | |
6775 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6776 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6777 | }; |
6778 | ||
6779 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6780 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6781 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6782 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6783 | .recover_open = nfs41_open_expired, |
6784 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6785 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6786 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6787 | }; |
591d71cb | 6788 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6789 | |
17280175 | 6790 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6791 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6792 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6793 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6794 | }; |
6795 | ||
6796 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6797 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6798 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6799 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6800 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6801 | }; |
6802 | #endif | |
6803 | ||
97dc1359 TM |
6804 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6805 | .minor_version = 0, | |
6806 | .call_sync = _nfs4_call_sync, | |
36281caa | 6807 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6808 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6809 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6810 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6811 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6812 | }; |
6813 | ||
6814 | #if defined(CONFIG_NFS_V4_1) | |
6815 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6816 | .minor_version = 1, | |
6817 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 6818 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6819 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6820 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6821 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6822 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6823 | }; |
6824 | #endif | |
6825 | ||
97dc1359 TM |
6826 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6827 | [0] = &nfs_v4_0_minor_ops, | |
6828 | #if defined(CONFIG_NFS_V4_1) | |
6829 | [1] = &nfs_v4_1_minor_ops, | |
6830 | #endif | |
6831 | }; | |
6832 | ||
73a79706 BS |
6833 | const struct inode_operations nfs4_dir_inode_operations = { |
6834 | .create = nfs_create, | |
6835 | .lookup = nfs_lookup, | |
6836 | .atomic_open = nfs_atomic_open, | |
6837 | .link = nfs_link, | |
6838 | .unlink = nfs_unlink, | |
6839 | .symlink = nfs_symlink, | |
6840 | .mkdir = nfs_mkdir, | |
6841 | .rmdir = nfs_rmdir, | |
6842 | .mknod = nfs_mknod, | |
6843 | .rename = nfs_rename, | |
6844 | .permission = nfs_permission, | |
6845 | .getattr = nfs_getattr, | |
6846 | .setattr = nfs_setattr, | |
6847 | .getxattr = generic_getxattr, | |
6848 | .setxattr = generic_setxattr, | |
6849 | .listxattr = generic_listxattr, | |
6850 | .removexattr = generic_removexattr, | |
6851 | }; | |
6852 | ||
92e1d5be | 6853 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6854 | .permission = nfs_permission, |
6855 | .getattr = nfs_getattr, | |
6856 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6857 | .getxattr = generic_getxattr, |
6858 | .setxattr = generic_setxattr, | |
6859 | .listxattr = generic_listxattr, | |
6860 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6861 | }; |
6862 | ||
509de811 | 6863 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6864 | .version = 4, /* protocol version */ |
6865 | .dentry_ops = &nfs4_dentry_operations, | |
6866 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6867 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6868 | .file_ops = &nfs4_file_operations, |
1da177e4 | 6869 | .getroot = nfs4_proc_get_root, |
281cad46 | 6870 | .submount = nfs4_submount, |
ff9099f2 | 6871 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
6872 | .getattr = nfs4_proc_getattr, |
6873 | .setattr = nfs4_proc_setattr, | |
6874 | .lookup = nfs4_proc_lookup, | |
6875 | .access = nfs4_proc_access, | |
6876 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6877 | .create = nfs4_proc_create, |
6878 | .remove = nfs4_proc_remove, | |
6879 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 6880 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
6881 | .unlink_done = nfs4_proc_unlink_done, |
6882 | .rename = nfs4_proc_rename, | |
d3d4152a | 6883 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 6884 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 6885 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
6886 | .link = nfs4_proc_link, |
6887 | .symlink = nfs4_proc_symlink, | |
6888 | .mkdir = nfs4_proc_mkdir, | |
6889 | .rmdir = nfs4_proc_remove, | |
6890 | .readdir = nfs4_proc_readdir, | |
6891 | .mknod = nfs4_proc_mknod, | |
6892 | .statfs = nfs4_proc_statfs, | |
6893 | .fsinfo = nfs4_proc_fsinfo, | |
6894 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6895 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6896 | .decode_dirent = nfs4_decode_dirent, |
6897 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 6898 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 6899 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 6900 | .read_done = nfs4_read_done, |
1da177e4 | 6901 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 6902 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 6903 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 6904 | .write_done = nfs4_write_done, |
1da177e4 | 6905 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 6906 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 6907 | .commit_done = nfs4_commit_done, |
1da177e4 | 6908 | .lock = nfs4_proc_lock, |
e50a1c2e | 6909 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6910 | .close_context = nfs4_close_context, |
2b484297 | 6911 | .open_context = nfs4_atomic_open, |
011e2a7f | 6912 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 6913 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 6914 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 6915 | .init_client = nfs4_init_client, |
cdb7eced | 6916 | .free_client = nfs4_free_client, |
1179acc6 BS |
6917 | .create_server = nfs4_create_server, |
6918 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
6919 | }; |
6920 | ||
64c2ce8b AK |
6921 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6922 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6923 | .list = nfs4_xattr_list_nfs4_acl, | |
6924 | .get = nfs4_xattr_get_nfs4_acl, | |
6925 | .set = nfs4_xattr_set_nfs4_acl, | |
6926 | }; | |
6927 | ||
6928 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6929 | &nfs4_xattr_nfs4_acl_handler, | |
6930 | NULL | |
6931 | }; | |
6932 | ||
1da177e4 LT |
6933 | /* |
6934 | * Local variables: | |
6935 | * c-basic-offset: 8 | |
6936 | * End: | |
6937 | */ |