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; | |
6168f62c WAA |
107 | case -NFS4ERR_ACCESS: |
108 | return -EACCES; | |
52567b03 | 109 | default: |
1da177e4 | 110 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 111 | __func__, -err); |
52567b03 | 112 | break; |
1da177e4 | 113 | } |
52567b03 | 114 | return -EIO; |
1da177e4 LT |
115 | } |
116 | ||
117 | /* | |
118 | * This is our standard bitmap for GETATTR requests. | |
119 | */ | |
1549210f | 120 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
121 | FATTR4_WORD0_TYPE |
122 | | FATTR4_WORD0_CHANGE | |
123 | | FATTR4_WORD0_SIZE | |
124 | | FATTR4_WORD0_FSID | |
125 | | FATTR4_WORD0_FILEID, | |
126 | FATTR4_WORD1_MODE | |
127 | | FATTR4_WORD1_NUMLINKS | |
128 | | FATTR4_WORD1_OWNER | |
129 | | FATTR4_WORD1_OWNER_GROUP | |
130 | | FATTR4_WORD1_RAWDEV | |
131 | | FATTR4_WORD1_SPACE_USED | |
132 | | FATTR4_WORD1_TIME_ACCESS | |
133 | | FATTR4_WORD1_TIME_METADATA | |
134 | | FATTR4_WORD1_TIME_MODIFY | |
135 | }; | |
136 | ||
1549210f TM |
137 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
138 | FATTR4_WORD0_TYPE | |
139 | | FATTR4_WORD0_CHANGE | |
140 | | FATTR4_WORD0_SIZE | |
141 | | FATTR4_WORD0_FSID | |
142 | | FATTR4_WORD0_FILEID, | |
143 | FATTR4_WORD1_MODE | |
144 | | FATTR4_WORD1_NUMLINKS | |
145 | | FATTR4_WORD1_OWNER | |
146 | | FATTR4_WORD1_OWNER_GROUP | |
147 | | FATTR4_WORD1_RAWDEV | |
148 | | FATTR4_WORD1_SPACE_USED | |
149 | | FATTR4_WORD1_TIME_ACCESS | |
150 | | FATTR4_WORD1_TIME_METADATA | |
151 | | FATTR4_WORD1_TIME_MODIFY, | |
152 | FATTR4_WORD2_MDSTHRESHOLD | |
153 | }; | |
154 | ||
1da177e4 LT |
155 | const u32 nfs4_statfs_bitmap[2] = { |
156 | FATTR4_WORD0_FILES_AVAIL | |
157 | | FATTR4_WORD0_FILES_FREE | |
158 | | FATTR4_WORD0_FILES_TOTAL, | |
159 | FATTR4_WORD1_SPACE_AVAIL | |
160 | | FATTR4_WORD1_SPACE_FREE | |
161 | | FATTR4_WORD1_SPACE_TOTAL | |
162 | }; | |
163 | ||
4ce79717 | 164 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
165 | FATTR4_WORD0_MAXLINK |
166 | | FATTR4_WORD0_MAXNAME, | |
167 | 0 | |
168 | }; | |
169 | ||
dae100c2 | 170 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
171 | | FATTR4_WORD0_MAXREAD |
172 | | FATTR4_WORD0_MAXWRITE | |
173 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 174 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
175 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
176 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
177 | }; |
178 | ||
830b8e33 MN |
179 | const u32 nfs4_fs_locations_bitmap[2] = { |
180 | FATTR4_WORD0_TYPE | |
181 | | FATTR4_WORD0_CHANGE | |
182 | | FATTR4_WORD0_SIZE | |
183 | | FATTR4_WORD0_FSID | |
184 | | FATTR4_WORD0_FILEID | |
185 | | FATTR4_WORD0_FS_LOCATIONS, | |
186 | FATTR4_WORD1_MODE | |
187 | | FATTR4_WORD1_NUMLINKS | |
188 | | FATTR4_WORD1_OWNER | |
189 | | FATTR4_WORD1_OWNER_GROUP | |
190 | | FATTR4_WORD1_RAWDEV | |
191 | | FATTR4_WORD1_SPACE_USED | |
192 | | FATTR4_WORD1_TIME_ACCESS | |
193 | | FATTR4_WORD1_TIME_METADATA | |
194 | | FATTR4_WORD1_TIME_MODIFY | |
195 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
196 | }; | |
197 | ||
bc4785cd | 198 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
199 | struct nfs4_readdir_arg *readdir) |
200 | { | |
0dbb4c67 | 201 | __be32 *start, *p; |
1da177e4 LT |
202 | |
203 | BUG_ON(readdir->count < 80); | |
204 | if (cookie > 2) { | |
b7ef1956 | 205 | readdir->cookie = cookie; |
1da177e4 LT |
206 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
207 | return; | |
208 | } | |
209 | ||
210 | readdir->cookie = 0; | |
211 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
212 | if (cookie == 2) | |
213 | return; | |
214 | ||
215 | /* | |
216 | * NFSv4 servers do not return entries for '.' and '..' | |
217 | * Therefore, we fake these entries here. We let '.' | |
218 | * have cookie 0 and '..' have cookie 1. Note that | |
219 | * when talking to the server, we always send cookie 0 | |
220 | * instead of 1 or 2. | |
221 | */ | |
2b86ce2d | 222 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
223 | |
224 | if (cookie == 0) { | |
225 | *p++ = xdr_one; /* next */ | |
226 | *p++ = xdr_zero; /* cookie, first word */ | |
227 | *p++ = xdr_one; /* cookie, second word */ | |
228 | *p++ = xdr_one; /* entry len */ | |
229 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
230 | p++; | |
231 | *p++ = xdr_one; /* bitmap length */ | |
232 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
233 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 234 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
235 | } |
236 | ||
237 | *p++ = xdr_one; /* next */ | |
238 | *p++ = xdr_zero; /* cookie, first word */ | |
239 | *p++ = xdr_two; /* cookie, second word */ | |
240 | *p++ = xdr_two; /* entry len */ | |
241 | memcpy(p, "..\0\0", 4); /* entry */ | |
242 | p++; | |
243 | *p++ = xdr_one; /* bitmap length */ | |
244 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
245 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 246 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
247 | |
248 | readdir->pgbase = (char *)p - (char *)start; | |
249 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 250 | kunmap_atomic(start); |
1da177e4 LT |
251 | } |
252 | ||
65de872e TM |
253 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
254 | { | |
255 | int res; | |
256 | ||
257 | might_sleep(); | |
258 | ||
e005e804 | 259 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 260 | nfs_wait_bit_killable, TASK_KILLABLE); |
46a87b8a CL |
261 | if (res) |
262 | return res; | |
263 | ||
264 | if (clp->cl_cons_state < 0) | |
265 | return clp->cl_cons_state; | |
266 | return 0; | |
65de872e TM |
267 | } |
268 | ||
269 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
270 | { | |
271 | int res = 0; | |
272 | ||
273 | might_sleep(); | |
274 | ||
275 | if (*timeout <= 0) | |
276 | *timeout = NFS4_POLL_RETRY_MIN; | |
277 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
278 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 279 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
280 | if (fatal_signal_pending(current)) |
281 | res = -ERESTARTSYS; | |
282 | *timeout <<= 1; | |
283 | return res; | |
284 | } | |
285 | ||
286 | /* This is the error handling routine for processes that are allowed | |
287 | * to sleep. | |
288 | */ | |
b064eca2 | 289 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
290 | { |
291 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 292 | struct nfs4_state *state = exception->state; |
3114ea7a | 293 | struct inode *inode = exception->inode; |
65de872e TM |
294 | int ret = errorcode; |
295 | ||
296 | exception->retry = 0; | |
297 | switch(errorcode) { | |
298 | case 0: | |
299 | return 0; | |
3114ea7a | 300 | case -NFS4ERR_OPENMODE: |
011e2a7f | 301 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 302 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
303 | exception->retry = 1; |
304 | return 0; | |
305 | } | |
306 | if (state == NULL) | |
307 | break; | |
308 | nfs4_schedule_stateid_recovery(server, state); | |
309 | goto wait_on_recovery; | |
a1d0b5ee | 310 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
311 | case -NFS4ERR_ADMIN_REVOKED: |
312 | case -NFS4ERR_BAD_STATEID: | |
9e33bed5 TM |
313 | if (state == NULL) |
314 | break; | |
14977489 | 315 | nfs_remove_bad_delegation(state->inode); |
0400a6b0 TM |
316 | nfs4_schedule_stateid_recovery(server, state); |
317 | goto wait_on_recovery; | |
0ced63d1 TM |
318 | case -NFS4ERR_EXPIRED: |
319 | if (state != NULL) | |
320 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 321 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 322 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
323 | nfs4_schedule_lease_recovery(clp); |
324 | goto wait_on_recovery; | |
03391693 | 325 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
326 | case -NFS4ERR_BADSESSION: |
327 | case -NFS4ERR_BADSLOT: | |
328 | case -NFS4ERR_BAD_HIGH_SLOT: | |
329 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
330 | case -NFS4ERR_DEADSESSION: | |
331 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
332 | case -NFS4ERR_SEQ_MISORDERED: | |
333 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
334 | errorcode); | |
9f594791 | 335 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
4745e315 | 336 | exception->retry = 1; |
b9179237 | 337 | break; |
03391693 | 338 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 339 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
340 | if (exception->timeout > HZ) { |
341 | /* We have retried a decent amount, time to | |
342 | * fail | |
343 | */ | |
344 | ret = -EBUSY; | |
345 | break; | |
346 | } | |
65de872e TM |
347 | case -NFS4ERR_GRACE: |
348 | case -NFS4ERR_DELAY: | |
2c643488 | 349 | case -EKEYEXPIRED: |
65de872e TM |
350 | ret = nfs4_delay(server->client, &exception->timeout); |
351 | if (ret != 0) | |
352 | break; | |
a8a4ae3a | 353 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
354 | case -NFS4ERR_OLD_STATEID: |
355 | exception->retry = 1; | |
b064eca2 TM |
356 | break; |
357 | case -NFS4ERR_BADOWNER: | |
358 | /* The following works around a Linux server bug! */ | |
359 | case -NFS4ERR_BADNAME: | |
360 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
361 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
362 | exception->retry = 1; | |
363 | printk(KERN_WARNING "NFS: v4 server %s " | |
364 | "does not accept raw " | |
365 | "uid/gids. " | |
366 | "Reenabling the idmapper.\n", | |
367 | server->nfs_client->cl_hostname); | |
368 | } | |
65de872e TM |
369 | } |
370 | /* We failed to handle the error */ | |
371 | return nfs4_map_errors(ret); | |
0400a6b0 | 372 | wait_on_recovery: |
a2c0b9e2 TM |
373 | ret = nfs4_wait_clnt_recover(clp); |
374 | if (ret == 0) | |
375 | exception->retry = 1; | |
376 | return ret; | |
65de872e TM |
377 | } |
378 | ||
379 | ||
452e9352 | 380 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 381 | { |
1da177e4 LT |
382 | spin_lock(&clp->cl_lock); |
383 | if (time_before(clp->cl_last_renewal,timestamp)) | |
384 | clp->cl_last_renewal = timestamp; | |
385 | spin_unlock(&clp->cl_lock); | |
386 | } | |
387 | ||
452e9352 TM |
388 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
389 | { | |
390 | do_renew_lease(server->nfs_client, timestamp); | |
391 | } | |
392 | ||
cccef3b9 AA |
393 | #if defined(CONFIG_NFS_V4_1) |
394 | ||
e2c4ab3c AA |
395 | /* |
396 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
397 | * | |
398 | * freeing a slot is trivially done by clearing its respective bit | |
399 | * in the bitmap. | |
400 | * If the freed slotid equals highest_used_slotid we want to update it | |
401 | * so that the server would be able to size down the slot table if needed, | |
402 | * otherwise we know that the highest_used_slotid is still in use. | |
403 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
404 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
405 | * highest slotid in use. | |
45d43c29 | 406 | * If none found, highest_used_slotid is set to NFS4_NO_SLOT. |
35dc1d74 TM |
407 | * |
408 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
409 | */ |
410 | static void | |
45d43c29 | 411 | nfs4_free_slot(struct nfs4_slot_table *tbl, u32 slotid) |
e2c4ab3c | 412 | { |
45d43c29 | 413 | BUG_ON(slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
414 | /* clear used bit in bitmap */ |
415 | __clear_bit(slotid, tbl->used_slots); | |
416 | ||
417 | /* update highest_used_slotid when it is freed */ | |
418 | if (slotid == tbl->highest_used_slotid) { | |
419 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 420 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
421 | tbl->highest_used_slotid = slotid; |
422 | else | |
45d43c29 | 423 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
e2c4ab3c | 424 | } |
45d43c29 TM |
425 | dprintk("%s: slotid %u highest_used_slotid %d\n", __func__, |
426 | slotid, tbl->highest_used_slotid); | |
e2c4ab3c AA |
427 | } |
428 | ||
961a828d TM |
429 | bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) |
430 | { | |
431 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
432 | return true; | |
e2c4ab3c AA |
433 | } |
434 | ||
3bfb0fc5 | 435 | /* |
42acd021 | 436 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 437 | */ |
42acd021 | 438 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 439 | { |
a2118c33 | 440 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
961a828d TM |
441 | rpc_wake_up_first(&ses->fc_slot_table.slot_tbl_waitq, |
442 | nfs4_set_task_privileged, NULL); | |
3bfb0fc5 AB |
443 | return; |
444 | } | |
445 | ||
45d43c29 | 446 | if (ses->fc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
3bfb0fc5 AB |
447 | return; |
448 | ||
42acd021 AA |
449 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
450 | complete(&ses->fc_slot_table.complete); | |
451 | } | |
452 | ||
453 | /* | |
454 | * Signal state manager thread if session back channel is drained | |
455 | */ | |
456 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
457 | { | |
458 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
45d43c29 | 459 | ses->bc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
42acd021 AA |
460 | return; |
461 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
462 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
463 | } |
464 | ||
d185a334 | 465 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
466 | { |
467 | struct nfs4_slot_table *tbl; | |
468 | ||
d185a334 | 469 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 470 | if (!res->sr_slot) { |
13615871 AA |
471 | /* just wake up the next guy waiting since |
472 | * we may have not consumed a slot after all */ | |
691daf3b | 473 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 474 | return; |
13615871 | 475 | } |
ea028ac9 | 476 | |
35dc1d74 | 477 | spin_lock(&tbl->slot_tbl_lock); |
aabd0b40 | 478 | nfs4_free_slot(tbl, res->sr_slot - tbl->slots); |
42acd021 | 479 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 480 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 481 | res->sr_slot = NULL; |
13615871 AA |
482 | } |
483 | ||
14516c3a | 484 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
485 | { |
486 | unsigned long timestamp; | |
14516c3a | 487 | struct nfs_client *clp; |
b0df806c AA |
488 | |
489 | /* | |
490 | * sr_status remains 1 if an RPC level error occurred. The server | |
491 | * may or may not have processed the sequence operation.. | |
492 | * Proceed as if the server received and processed the sequence | |
493 | * operation. | |
494 | */ | |
495 | if (res->sr_status == 1) | |
496 | res->sr_status = NFS_OK; | |
497 | ||
468f8613 BS |
498 | /* don't increment the sequence number if the task wasn't sent */ |
499 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
500 | goto out; |
501 | ||
691daf3b | 502 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
503 | switch (res->sr_status) { |
504 | case 0: | |
b0df806c | 505 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 506 | ++res->sr_slot->seq_nr; |
b0df806c | 507 | timestamp = res->sr_renewal_time; |
14516c3a | 508 | clp = res->sr_session->clp; |
452e9352 | 509 | do_renew_lease(clp, timestamp); |
0629e370 | 510 | /* Check sequence flags */ |
b4410c2f TM |
511 | if (res->sr_status_flags != 0) |
512 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
513 | break; |
514 | case -NFS4ERR_DELAY: | |
515 | /* The server detected a resend of the RPC call and | |
516 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
517 | * of RFC5661. | |
518 | */ | |
12364a4f | 519 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
520 | __func__, |
521 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
522 | res->sr_slot->seq_nr); | |
14516c3a TM |
523 | goto out_retry; |
524 | default: | |
525 | /* Just update the slot sequence no. */ | |
dfb4f309 | 526 | ++res->sr_slot->seq_nr; |
b0df806c AA |
527 | } |
528 | out: | |
529 | /* The session may be reset by one of the error handlers. */ | |
530 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 531 | nfs41_sequence_free_slot(res); |
14516c3a TM |
532 | return 1; |
533 | out_retry: | |
d05dd4e9 | 534 | if (!rpc_restart_call(task)) |
14516c3a TM |
535 | goto out; |
536 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
537 | return 0; | |
b0df806c AA |
538 | } |
539 | ||
14516c3a TM |
540 | static int nfs4_sequence_done(struct rpc_task *task, |
541 | struct nfs4_sequence_res *res) | |
df896455 | 542 | { |
14516c3a TM |
543 | if (res->sr_session == NULL) |
544 | return 1; | |
545 | return nfs41_sequence_done(task, res); | |
df896455 TM |
546 | } |
547 | ||
510b8175 BH |
548 | /* |
549 | * nfs4_find_slot - efficiently look for a free slot | |
550 | * | |
551 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
552 | * If found, we mark the slot as used, update the highest_used_slotid, | |
553 | * and respectively set up the sequence operation args. | |
45d43c29 | 554 | * The slot number is returned if found, or NFS4_NO_SLOT otherwise. |
fbcd4abc AA |
555 | * |
556 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 | 557 | */ |
45d43c29 | 558 | static u32 |
40ead580 | 559 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 | 560 | { |
45d43c29 TM |
561 | u32 slotid; |
562 | u32 ret_id = NFS4_NO_SLOT; | |
510b8175 | 563 | |
45d43c29 | 564 | dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n", |
510b8175 BH |
565 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, |
566 | tbl->max_slots); | |
567 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
568 | if (slotid >= tbl->max_slots) | |
569 | goto out; | |
570 | __set_bit(slotid, tbl->used_slots); | |
45d43c29 TM |
571 | if (slotid > tbl->highest_used_slotid || |
572 | tbl->highest_used_slotid == NFS4_NO_SLOT) | |
510b8175 BH |
573 | tbl->highest_used_slotid = slotid; |
574 | ret_id = slotid; | |
575 | out: | |
576 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
577 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
578 | return ret_id; |
579 | } | |
580 | ||
9d12b216 TM |
581 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
582 | struct nfs4_sequence_res *res, int cache_reply) | |
583 | { | |
584 | args->sa_session = NULL; | |
585 | args->sa_cache_this = 0; | |
586 | if (cache_reply) | |
587 | args->sa_cache_this = 1; | |
588 | res->sr_session = NULL; | |
589 | res->sr_slot = NULL; | |
590 | } | |
591 | ||
dc70d7b3 | 592 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
593 | struct nfs4_sequence_args *args, |
594 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
595 | struct rpc_task *task) |
596 | { | |
fbcd4abc AA |
597 | struct nfs4_slot *slot; |
598 | struct nfs4_slot_table *tbl; | |
45d43c29 | 599 | u32 slotid; |
fbcd4abc AA |
600 | |
601 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 602 | /* slot already allocated? */ |
dfb4f309 | 603 | if (res->sr_slot != NULL) |
ce5039c1 AA |
604 | return 0; |
605 | ||
fbcd4abc AA |
606 | tbl = &session->fc_slot_table; |
607 | ||
608 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 609 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 610 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 611 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 612 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 613 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 614 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 615 | return -EAGAIN; |
b069d94a AA |
616 | } |
617 | ||
689cf5c1 AB |
618 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
619 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
620 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
621 | spin_unlock(&tbl->slot_tbl_lock); | |
622 | dprintk("%s enforce FIFO order\n", __func__); | |
623 | return -EAGAIN; | |
624 | } | |
625 | ||
40ead580 | 626 | slotid = nfs4_find_slot(tbl); |
45d43c29 | 627 | if (slotid == NFS4_NO_SLOT) { |
fbcd4abc AA |
628 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
629 | spin_unlock(&tbl->slot_tbl_lock); | |
630 | dprintk("<-- %s: no free slots\n", __func__); | |
631 | return -EAGAIN; | |
632 | } | |
633 | spin_unlock(&tbl->slot_tbl_lock); | |
634 | ||
689cf5c1 | 635 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 636 | slot = tbl->slots + slotid; |
99fe60d0 | 637 | args->sa_session = session; |
fbcd4abc | 638 | args->sa_slotid = slotid; |
fbcd4abc AA |
639 | |
640 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
641 | ||
99fe60d0 | 642 | res->sr_session = session; |
dfb4f309 | 643 | res->sr_slot = slot; |
fbcd4abc | 644 | res->sr_renewal_time = jiffies; |
2a6e26cd | 645 | res->sr_status_flags = 0; |
fbcd4abc AA |
646 | /* |
647 | * sr_status is only set in decode_sequence, and so will remain | |
648 | * set to 1 if an rpc level failure occurs. | |
649 | */ | |
650 | res->sr_status = 1; | |
ce5039c1 AA |
651 | return 0; |
652 | } | |
dc70d7b3 | 653 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 654 | |
035168ab | 655 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
656 | struct nfs4_sequence_args *args, |
657 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
658 | struct rpc_task *task) |
659 | { | |
035168ab | 660 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
661 | int ret = 0; |
662 | ||
9d12b216 | 663 | if (session == NULL) |
035168ab | 664 | goto out; |
035168ab | 665 | |
12364a4f | 666 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
667 | __func__, session->clp, session, res->sr_slot ? |
668 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 669 | |
9d12b216 | 670 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
671 | out: |
672 | dprintk("<-- %s status=%d\n", __func__, ret); | |
673 | return ret; | |
674 | } | |
675 | ||
676 | struct nfs41_call_sync_data { | |
035168ab | 677 | const struct nfs_server *seq_server; |
ce5039c1 AA |
678 | struct nfs4_sequence_args *seq_args; |
679 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
680 | }; |
681 | ||
682 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
683 | { | |
684 | struct nfs41_call_sync_data *data = calldata; | |
685 | ||
035168ab TM |
686 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
687 | ||
688 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
9d12b216 | 689 | data->seq_res, task)) |
ce5039c1 AA |
690 | return; |
691 | rpc_call_start(task); | |
692 | } | |
693 | ||
b257957e AB |
694 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
695 | { | |
696 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
697 | nfs41_call_sync_prepare(task, calldata); | |
698 | } | |
699 | ||
69ab40c4 AA |
700 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
701 | { | |
702 | struct nfs41_call_sync_data *data = calldata; | |
703 | ||
14516c3a | 704 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
705 | } |
706 | ||
17280175 | 707 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 708 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 709 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
710 | }; |
711 | ||
17280175 | 712 | static const struct rpc_call_ops nfs41_call_priv_sync_ops = { |
b257957e AB |
713 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, |
714 | .rpc_call_done = nfs41_call_sync_done, | |
715 | }; | |
716 | ||
7c513058 BS |
717 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
718 | struct nfs_server *server, | |
ce5039c1 AA |
719 | struct rpc_message *msg, |
720 | struct nfs4_sequence_args *args, | |
721 | struct nfs4_sequence_res *res, | |
b257957e | 722 | int privileged) |
ce5039c1 AA |
723 | { |
724 | int ret; | |
725 | struct rpc_task *task; | |
726 | struct nfs41_call_sync_data data = { | |
035168ab | 727 | .seq_server = server, |
ce5039c1 AA |
728 | .seq_args = args, |
729 | .seq_res = res, | |
ce5039c1 AA |
730 | }; |
731 | struct rpc_task_setup task_setup = { | |
7c513058 | 732 | .rpc_client = clnt, |
ce5039c1 AA |
733 | .rpc_message = msg, |
734 | .callback_ops = &nfs41_call_sync_ops, | |
735 | .callback_data = &data | |
736 | }; | |
737 | ||
b257957e AB |
738 | if (privileged) |
739 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
740 | task = rpc_run_task(&task_setup); |
741 | if (IS_ERR(task)) | |
742 | ret = PTR_ERR(task); | |
743 | else { | |
744 | ret = task->tk_status; | |
745 | rpc_put_task(task); | |
746 | } | |
747 | return ret; | |
748 | } | |
749 | ||
7c513058 BS |
750 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
751 | struct nfs_server *server, | |
cccef3b9 AA |
752 | struct rpc_message *msg, |
753 | struct nfs4_sequence_args *args, | |
754 | struct nfs4_sequence_res *res, | |
755 | int cache_reply) | |
756 | { | |
9d12b216 TM |
757 | nfs41_init_sequence(args, res, cache_reply); |
758 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); | |
cccef3b9 AA |
759 | } |
760 | ||
df896455 | 761 | #else |
9d12b216 TM |
762 | static inline |
763 | void nfs41_init_sequence(struct nfs4_sequence_args *args, | |
764 | struct nfs4_sequence_res *res, int cache_reply) | |
765 | { | |
766 | } | |
767 | ||
14516c3a TM |
768 | static int nfs4_sequence_done(struct rpc_task *task, |
769 | struct nfs4_sequence_res *res) | |
df896455 | 770 | { |
14516c3a | 771 | return 1; |
df896455 | 772 | } |
cccef3b9 AA |
773 | #endif /* CONFIG_NFS_V4_1 */ |
774 | ||
7c513058 BS |
775 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
776 | struct nfs_server *server, | |
cccef3b9 AA |
777 | struct rpc_message *msg, |
778 | struct nfs4_sequence_args *args, | |
779 | struct nfs4_sequence_res *res, | |
780 | int cache_reply) | |
781 | { | |
9d12b216 | 782 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 783 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
784 | } |
785 | ||
e73b83f2 | 786 | static inline |
7c513058 BS |
787 | int nfs4_call_sync(struct rpc_clnt *clnt, |
788 | struct nfs_server *server, | |
e73b83f2 BS |
789 | struct rpc_message *msg, |
790 | struct nfs4_sequence_args *args, | |
791 | struct nfs4_sequence_res *res, | |
792 | int cache_reply) | |
793 | { | |
7c513058 BS |
794 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
795 | args, res, cache_reply); | |
e73b83f2 | 796 | } |
cccef3b9 | 797 | |
38478b24 | 798 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 799 | { |
38478b24 | 800 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 801 | |
38478b24 | 802 | spin_lock(&dir->i_lock); |
359d7d1c | 803 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 804 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 805 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 806 | dir->i_version = cinfo->after; |
38478b24 | 807 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
808 | } |
809 | ||
e56e0b78 | 810 | struct nfs4_opendata { |
c6d00e63 | 811 | struct kref kref; |
e56e0b78 TM |
812 | struct nfs_openargs o_arg; |
813 | struct nfs_openres o_res; | |
cdd4e68b TM |
814 | struct nfs_open_confirmargs c_arg; |
815 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
816 | struct nfs4_string owner_name; |
817 | struct nfs4_string group_name; | |
e56e0b78 | 818 | struct nfs_fattr f_attr; |
e56e0b78 | 819 | struct dentry *dir; |
82a2c1b7 | 820 | struct dentry *dentry; |
e56e0b78 | 821 | struct nfs4_state_owner *owner; |
aac00a8d | 822 | struct nfs4_state *state; |
e56e0b78 | 823 | struct iattr attrs; |
26e976a8 | 824 | unsigned long timestamp; |
3e309914 | 825 | unsigned int rpc_done : 1; |
24ac23ab TM |
826 | int rpc_status; |
827 | int cancelled; | |
e56e0b78 TM |
828 | }; |
829 | ||
2ced46c2 TM |
830 | |
831 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
832 | { | |
833 | p->o_res.f_attr = &p->f_attr; | |
c1d51931 TM |
834 | p->o_res.seqid = p->o_arg.seqid; |
835 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
836 | p->o_res.server = p->o_arg.server; |
837 | nfs_fattr_init(&p->f_attr); | |
6926afd1 | 838 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
839 | } |
840 | ||
82a2c1b7 | 841 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 842 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
843 | const struct iattr *attrs, |
844 | gfp_t gfp_mask) | |
e56e0b78 | 845 | { |
82a2c1b7 | 846 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
847 | struct inode *dir = parent->d_inode; |
848 | struct nfs_server *server = NFS_SERVER(dir); | |
849 | struct nfs4_opendata *p; | |
850 | ||
8535b2be | 851 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
852 | if (p == NULL) |
853 | goto err; | |
8535b2be | 854 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
855 | if (p->o_arg.seqid == NULL) |
856 | goto err_free; | |
82a2c1b7 AV |
857 | nfs_sb_active(dentry->d_sb); |
858 | p->dentry = dget(dentry); | |
e56e0b78 TM |
859 | p->dir = parent; |
860 | p->owner = sp; | |
861 | atomic_inc(&sp->so_count); | |
862 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
863 | p->o_arg.open_flags = flags; |
864 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
865 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
866 | * will return permission denied for all bits until close */ | |
867 | if (!(flags & O_EXCL)) { | |
868 | /* ask server to check for all possible rights as results | |
869 | * are cached */ | |
870 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
871 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
872 | p->o_res.access_request = p->o_arg.access; | |
873 | } | |
7539bbab | 874 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
875 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
876 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 877 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
878 | p->o_arg.server = server; |
879 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 880 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
e56e0b78 | 881 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 882 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 883 | __be32 verf[2]; |
d77d76ff | 884 | |
e56e0b78 TM |
885 | p->o_arg.u.attrs = &p->attrs; |
886 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
887 | |
888 | verf[0] = jiffies; | |
889 | verf[1] = current->pid; | |
890 | memcpy(p->o_arg.u.verifier.data, verf, | |
891 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 892 | } |
cdd4e68b TM |
893 | p->c_arg.fh = &p->o_res.fh; |
894 | p->c_arg.stateid = &p->o_res.stateid; | |
895 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 896 | nfs4_init_opendata_res(p); |
c6d00e63 | 897 | kref_init(&p->kref); |
e56e0b78 TM |
898 | return p; |
899 | err_free: | |
900 | kfree(p); | |
901 | err: | |
902 | dput(parent); | |
903 | return NULL; | |
904 | } | |
905 | ||
c6d00e63 | 906 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 907 | { |
c6d00e63 TM |
908 | struct nfs4_opendata *p = container_of(kref, |
909 | struct nfs4_opendata, kref); | |
82a2c1b7 | 910 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
911 | |
912 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
913 | if (p->state != NULL) |
914 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
915 | nfs4_put_state_owner(p->owner); |
916 | dput(p->dir); | |
82a2c1b7 AV |
917 | dput(p->dentry); |
918 | nfs_sb_deactive(sb); | |
6926afd1 | 919 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
920 | kfree(p); |
921 | } | |
922 | ||
923 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
924 | { | |
925 | if (p != NULL) | |
926 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
927 | } |
928 | ||
06f814a3 TM |
929 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
930 | { | |
06f814a3 TM |
931 | int ret; |
932 | ||
06f814a3 | 933 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
934 | return ret; |
935 | } | |
936 | ||
dc0b027d | 937 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
938 | { |
939 | int ret = 0; | |
dc0b027d | 940 | |
536e43d1 | 941 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
942 | goto out; |
943 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 944 | case FMODE_READ: |
88069f77 TM |
945 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
946 | && state->n_rdonly != 0; | |
6ee41268 TM |
947 | break; |
948 | case FMODE_WRITE: | |
88069f77 TM |
949 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
950 | && state->n_wronly != 0; | |
6ee41268 TM |
951 | break; |
952 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
953 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
954 | && state->n_rdwr != 0; | |
6ee41268 | 955 | } |
dc0b027d | 956 | out: |
6ee41268 TM |
957 | return ret; |
958 | } | |
959 | ||
dc0b027d | 960 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 961 | { |
652f89f6 TM |
962 | if (delegation == NULL) |
963 | return 0; | |
dc0b027d | 964 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 965 | return 0; |
15c831bf | 966 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 967 | return 0; |
b7391f44 | 968 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
969 | return 1; |
970 | } | |
971 | ||
dc0b027d | 972 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 973 | { |
dc0b027d | 974 | switch (fmode) { |
e7616923 TM |
975 | case FMODE_WRITE: |
976 | state->n_wronly++; | |
977 | break; | |
978 | case FMODE_READ: | |
979 | state->n_rdonly++; | |
980 | break; | |
981 | case FMODE_READ|FMODE_WRITE: | |
982 | state->n_rdwr++; | |
983 | } | |
dc0b027d | 984 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
985 | } |
986 | ||
dc0b027d | 987 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
988 | { |
989 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
990 | nfs4_stateid_copy(&state->stateid, stateid); |
991 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 992 | switch (fmode) { |
003707c7 TM |
993 | case FMODE_READ: |
994 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
995 | break; | |
996 | case FMODE_WRITE: | |
997 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
998 | break; | |
999 | case FMODE_READ|FMODE_WRITE: | |
1000 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1001 | } | |
e7616923 TM |
1002 | } |
1003 | ||
dc0b027d | 1004 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1005 | { |
8bda4e4c | 1006 | write_seqlock(&state->seqlock); |
dc0b027d | 1007 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 1008 | write_sequnlock(&state->seqlock); |
003707c7 TM |
1009 | } |
1010 | ||
dc0b027d | 1011 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1012 | { |
8bda4e4c TM |
1013 | /* |
1014 | * Protect the call to nfs4_state_set_mode_locked and | |
1015 | * serialise the stateid update | |
1016 | */ | |
1017 | write_seqlock(&state->seqlock); | |
003707c7 | 1018 | if (deleg_stateid != NULL) { |
f597c537 | 1019 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1020 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1021 | } | |
1022 | if (open_stateid != NULL) | |
dc0b027d | 1023 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1024 | write_sequnlock(&state->seqlock); |
1025 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1026 | update_open_stateflags(state, fmode); |
ec073428 | 1027 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1028 | } |
1029 | ||
dc0b027d | 1030 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1031 | { |
1032 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1033 | struct nfs_delegation *deleg_cur; | |
1034 | int ret = 0; | |
1035 | ||
dc0b027d | 1036 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1037 | |
1038 | rcu_read_lock(); | |
1039 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1040 | if (deleg_cur == NULL) | |
1041 | goto no_delegation; | |
1042 | ||
1043 | spin_lock(&deleg_cur->lock); | |
1044 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 1045 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1046 | goto no_delegation_unlock; |
1047 | ||
1048 | if (delegation == NULL) | |
1049 | delegation = &deleg_cur->stateid; | |
f597c537 | 1050 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1051 | goto no_delegation_unlock; |
1052 | ||
b7391f44 | 1053 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1054 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1055 | ret = 1; |
1056 | no_delegation_unlock: | |
1057 | spin_unlock(&deleg_cur->lock); | |
1058 | no_delegation: | |
1059 | rcu_read_unlock(); | |
1060 | ||
1061 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1062 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1063 | ret = 1; |
1064 | } | |
1065 | ||
1066 | return ret; | |
1067 | } | |
1068 | ||
1069 | ||
dc0b027d | 1070 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1071 | { |
1072 | struct nfs_delegation *delegation; | |
1073 | ||
1074 | rcu_read_lock(); | |
1075 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1076 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1077 | rcu_read_unlock(); |
1078 | return; | |
1079 | } | |
1080 | rcu_read_unlock(); | |
57ec14c5 | 1081 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1082 | } |
1083 | ||
6ee41268 | 1084 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1085 | { |
1086 | struct nfs4_state *state = opendata->state; | |
1087 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1088 | struct nfs_delegation *delegation; | |
536e43d1 | 1089 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1090 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1091 | nfs4_stateid stateid; |
1092 | int ret = -EAGAIN; | |
1093 | ||
aac00a8d | 1094 | for (;;) { |
dc0b027d | 1095 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1096 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1097 | if (can_open_cached(state, fmode, open_mode)) { |
1098 | update_open_stateflags(state, fmode); | |
6ee41268 | 1099 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1100 | goto out_return_state; |
1101 | } | |
1102 | spin_unlock(&state->owner->so_lock); | |
1103 | } | |
34310430 TM |
1104 | rcu_read_lock(); |
1105 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1106 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1107 | rcu_read_unlock(); |
aac00a8d | 1108 | break; |
34310430 | 1109 | } |
aac00a8d | 1110 | /* Save the delegation */ |
f597c537 | 1111 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1112 | rcu_read_unlock(); |
af22f94a | 1113 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1114 | if (ret != 0) |
1115 | goto out; | |
1116 | ret = -EAGAIN; | |
34310430 TM |
1117 | |
1118 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1119 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1120 | goto out_return_state; |
aac00a8d | 1121 | } |
aac00a8d TM |
1122 | out: |
1123 | return ERR_PTR(ret); | |
1124 | out_return_state: | |
1125 | atomic_inc(&state->count); | |
1126 | return state; | |
1127 | } | |
1128 | ||
24ac23ab TM |
1129 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1130 | { | |
1131 | struct inode *inode; | |
1132 | struct nfs4_state *state = NULL; | |
003707c7 | 1133 | struct nfs_delegation *delegation; |
1b370bc2 | 1134 | int ret; |
24ac23ab | 1135 | |
aac00a8d | 1136 | if (!data->rpc_done) { |
6ee41268 | 1137 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1138 | goto out; |
1139 | } | |
1140 | ||
1b370bc2 | 1141 | ret = -EAGAIN; |
24ac23ab | 1142 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1143 | goto err; |
24ac23ab | 1144 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1145 | ret = PTR_ERR(inode); |
03f28e3a | 1146 | if (IS_ERR(inode)) |
1b370bc2 TM |
1147 | goto err; |
1148 | ret = -ENOMEM; | |
24ac23ab TM |
1149 | state = nfs4_get_open_state(inode, data->owner); |
1150 | if (state == NULL) | |
1b370bc2 | 1151 | goto err_put_inode; |
549d6ed5 | 1152 | if (data->o_res.delegation_type != 0) { |
4e0038b6 | 1153 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; |
549d6ed5 TM |
1154 | int delegation_flags = 0; |
1155 | ||
003707c7 TM |
1156 | rcu_read_lock(); |
1157 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1158 | if (delegation) | |
1159 | delegation_flags = delegation->flags; | |
1160 | rcu_read_unlock(); | |
652f89f6 TM |
1161 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { |
1162 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1163 | "returning a delegation for " | |
1164 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
4e0038b6 | 1165 | clp->cl_hostname); |
652f89f6 | 1166 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1167 | nfs_inode_set_delegation(state->inode, |
1168 | data->owner->so_cred, | |
1169 | &data->o_res); | |
1170 | else | |
1171 | nfs_inode_reclaim_delegation(state->inode, | |
1172 | data->owner->so_cred, | |
1173 | &data->o_res); | |
1174 | } | |
34310430 TM |
1175 | |
1176 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1177 | data->o_arg.fmode); |
24ac23ab | 1178 | iput(inode); |
aac00a8d | 1179 | out: |
24ac23ab | 1180 | return state; |
1b370bc2 TM |
1181 | err_put_inode: |
1182 | iput(inode); | |
1183 | err: | |
1184 | return ERR_PTR(ret); | |
24ac23ab TM |
1185 | } |
1186 | ||
864472e9 TM |
1187 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1188 | { | |
1189 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1190 | struct nfs_open_context *ctx; | |
1191 | ||
1192 | spin_lock(&state->inode->i_lock); | |
1193 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1194 | if (ctx->state != state) | |
1195 | continue; | |
1196 | get_nfs_open_context(ctx); | |
1197 | spin_unlock(&state->inode->i_lock); | |
1198 | return ctx; | |
1199 | } | |
1200 | spin_unlock(&state->inode->i_lock); | |
1201 | return ERR_PTR(-ENOENT); | |
1202 | } | |
1203 | ||
6f220ed5 TM |
1204 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1205 | { | |
1206 | struct nfs4_opendata *opendata; | |
1207 | ||
3d4ff43d | 1208 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1209 | if (opendata == NULL) |
1210 | return ERR_PTR(-ENOMEM); | |
1211 | opendata->state = state; | |
1212 | atomic_inc(&state->count); | |
1213 | return opendata; | |
1214 | } | |
1215 | ||
dc0b027d | 1216 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1217 | { |
2ced46c2 | 1218 | struct nfs4_state *newstate; |
864472e9 TM |
1219 | int ret; |
1220 | ||
dc0b027d TM |
1221 | opendata->o_arg.open_flags = 0; |
1222 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1223 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1224 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1225 | nfs4_init_opendata_res(opendata); | |
b257957e | 1226 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1227 | if (ret != 0) |
1228 | return ret; | |
2ced46c2 | 1229 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1230 | if (IS_ERR(newstate)) |
1231 | return PTR_ERR(newstate); | |
643168c2 | 1232 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1233 | *res = newstate; |
864472e9 TM |
1234 | return 0; |
1235 | } | |
1236 | ||
1237 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1238 | { | |
864472e9 | 1239 | struct nfs4_state *newstate; |
864472e9 TM |
1240 | int ret; |
1241 | ||
1242 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1243 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1244 | smp_rmb(); |
1245 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1246 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1247 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1248 | if (ret != 0) |
1249 | return ret; | |
2ced46c2 TM |
1250 | if (newstate != state) |
1251 | return -ESTALE; | |
864472e9 TM |
1252 | } |
1253 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1254 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1255 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1256 | if (ret != 0) |
1257 | return ret; | |
2ced46c2 TM |
1258 | if (newstate != state) |
1259 | return -ESTALE; | |
864472e9 TM |
1260 | } |
1261 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1262 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1263 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1264 | if (ret != 0) |
1265 | return ret; | |
2ced46c2 TM |
1266 | if (newstate != state) |
1267 | return -ESTALE; | |
864472e9 | 1268 | } |
1ac7e2fd TM |
1269 | /* |
1270 | * We may have performed cached opens for all three recoveries. | |
1271 | * Check if we need to update the current stateid. | |
1272 | */ | |
1273 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1274 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1275 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1276 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1277 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1278 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1279 | } |
864472e9 TM |
1280 | return 0; |
1281 | } | |
1282 | ||
1da177e4 LT |
1283 | /* |
1284 | * OPEN_RECLAIM: | |
1285 | * reclaim state on the server after a reboot. | |
1da177e4 | 1286 | */ |
539cd03a | 1287 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1288 | { |
1ac7e2fd | 1289 | struct nfs_delegation *delegation; |
864472e9 | 1290 | struct nfs4_opendata *opendata; |
dc0b027d | 1291 | fmode_t delegation_type = 0; |
1da177e4 LT |
1292 | int status; |
1293 | ||
6f220ed5 TM |
1294 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1295 | if (IS_ERR(opendata)) | |
1296 | return PTR_ERR(opendata); | |
864472e9 TM |
1297 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1298 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1299 | rcu_read_lock(); |
1300 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1301 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1302 | delegation_type = delegation->type; |
1ac7e2fd | 1303 | rcu_read_unlock(); |
864472e9 TM |
1304 | opendata->o_arg.u.delegation_type = delegation_type; |
1305 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1306 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1307 | return status; |
1308 | } | |
1309 | ||
539cd03a | 1310 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1311 | { |
1312 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1313 | struct nfs4_exception exception = { }; | |
1314 | int err; | |
1315 | do { | |
539cd03a | 1316 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1317 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1318 | break; |
1319 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1320 | } while (exception.retry); |
1321 | return err; | |
1322 | } | |
1323 | ||
864472e9 TM |
1324 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1325 | { | |
1326 | struct nfs_open_context *ctx; | |
1327 | int ret; | |
1328 | ||
1329 | ctx = nfs4_state_find_open_context(state); | |
1330 | if (IS_ERR(ctx)) | |
1331 | return PTR_ERR(ctx); | |
539cd03a | 1332 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1333 | put_nfs_open_context(ctx); |
1334 | return ret; | |
1335 | } | |
1336 | ||
13437e12 | 1337 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1338 | { |
e56e0b78 | 1339 | struct nfs4_opendata *opendata; |
864472e9 | 1340 | int ret; |
1da177e4 | 1341 | |
6f220ed5 TM |
1342 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1343 | if (IS_ERR(opendata)) | |
1344 | return PTR_ERR(opendata); | |
e56e0b78 | 1345 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1346 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1347 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1348 | nfs4_opendata_put(opendata); |
864472e9 | 1349 | return ret; |
1da177e4 LT |
1350 | } |
1351 | ||
13437e12 | 1352 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1353 | { |
1354 | struct nfs4_exception exception = { }; | |
539cd03a | 1355 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1356 | int err; |
1357 | do { | |
13437e12 | 1358 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1359 | switch (err) { |
1360 | case 0: | |
965b5d67 TM |
1361 | case -ENOENT: |
1362 | case -ESTALE: | |
1363 | goto out; | |
bcfa49f6 RL |
1364 | case -NFS4ERR_BADSESSION: |
1365 | case -NFS4ERR_BADSLOT: | |
1366 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1367 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1368 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 1369 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
bcfa49f6 | 1370 | goto out; |
1da177e4 LT |
1371 | case -NFS4ERR_STALE_CLIENTID: |
1372 | case -NFS4ERR_STALE_STATEID: | |
1373 | case -NFS4ERR_EXPIRED: | |
1374 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1375 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1376 | goto out; |
1377 | case -ERESTARTSYS: | |
1378 | /* | |
1379 | * The show must go on: exit, but mark the | |
1380 | * stateid as needing recovery. | |
1381 | */ | |
a1d0b5ee | 1382 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1383 | case -NFS4ERR_ADMIN_REVOKED: |
1384 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1385 | nfs_inode_find_state_and_recover(state->inode, |
1386 | stateid); | |
0400a6b0 | 1387 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1388 | case -EKEYEXPIRED: |
1389 | /* | |
1390 | * User RPCSEC_GSS context has expired. | |
1391 | * We cannot recover this stateid now, so | |
1392 | * skip it and allow recovery thread to | |
1393 | * proceed. | |
1394 | */ | |
965b5d67 TM |
1395 | case -ENOMEM: |
1396 | err = 0; | |
1397 | goto out; | |
1da177e4 LT |
1398 | } |
1399 | err = nfs4_handle_exception(server, err, &exception); | |
1400 | } while (exception.retry); | |
965b5d67 | 1401 | out: |
1da177e4 LT |
1402 | return err; |
1403 | } | |
1404 | ||
cdd4e68b TM |
1405 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1406 | { | |
1407 | struct nfs4_opendata *data = calldata; | |
1408 | ||
1409 | data->rpc_status = task->tk_status; | |
26e976a8 | 1410 | if (data->rpc_status == 0) { |
f597c537 | 1411 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1412 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1413 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1414 | data->rpc_done = 1; |
26e976a8 | 1415 | } |
cdd4e68b TM |
1416 | } |
1417 | ||
1418 | static void nfs4_open_confirm_release(void *calldata) | |
1419 | { | |
1420 | struct nfs4_opendata *data = calldata; | |
1421 | struct nfs4_state *state = NULL; | |
1422 | ||
1423 | /* If this request hasn't been cancelled, do nothing */ | |
1424 | if (data->cancelled == 0) | |
1425 | goto out_free; | |
1426 | /* In case of error, no cleanup! */ | |
3e309914 | 1427 | if (!data->rpc_done) |
cdd4e68b | 1428 | goto out_free; |
cdd4e68b | 1429 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1430 | if (!IS_ERR(state)) |
643168c2 | 1431 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1432 | out_free: |
c6d00e63 | 1433 | nfs4_opendata_put(data); |
cdd4e68b TM |
1434 | } |
1435 | ||
1436 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1437 | .rpc_call_done = nfs4_open_confirm_done, |
1438 | .rpc_release = nfs4_open_confirm_release, | |
1439 | }; | |
1440 | ||
1441 | /* | |
1442 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1443 | */ | |
1444 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1445 | { | |
1446 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1447 | struct rpc_task *task; | |
5138fde0 TM |
1448 | struct rpc_message msg = { |
1449 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1450 | .rpc_argp = &data->c_arg, | |
1451 | .rpc_resp = &data->c_res, | |
1452 | .rpc_cred = data->owner->so_cred, | |
1453 | }; | |
c970aa85 TM |
1454 | struct rpc_task_setup task_setup_data = { |
1455 | .rpc_client = server->client, | |
5138fde0 | 1456 | .rpc_message = &msg, |
c970aa85 TM |
1457 | .callback_ops = &nfs4_open_confirm_ops, |
1458 | .callback_data = data, | |
101070ca | 1459 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1460 | .flags = RPC_TASK_ASYNC, |
1461 | }; | |
1da177e4 LT |
1462 | int status; |
1463 | ||
c6d00e63 | 1464 | kref_get(&data->kref); |
3e309914 TM |
1465 | data->rpc_done = 0; |
1466 | data->rpc_status = 0; | |
5138fde0 | 1467 | data->timestamp = jiffies; |
c970aa85 | 1468 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1469 | if (IS_ERR(task)) |
cdd4e68b | 1470 | return PTR_ERR(task); |
cdd4e68b TM |
1471 | status = nfs4_wait_for_completion_rpc_task(task); |
1472 | if (status != 0) { | |
1473 | data->cancelled = 1; | |
1474 | smp_wmb(); | |
1475 | } else | |
1476 | status = data->rpc_status; | |
e6b3c4db | 1477 | rpc_put_task(task); |
1da177e4 LT |
1478 | return status; |
1479 | } | |
1480 | ||
24ac23ab | 1481 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1482 | { |
24ac23ab TM |
1483 | struct nfs4_opendata *data = calldata; |
1484 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1485 | |
24ac23ab TM |
1486 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1487 | return; | |
aac00a8d TM |
1488 | /* |
1489 | * Check if we still need to send an OPEN call, or if we can use | |
1490 | * a delegation instead. | |
1491 | */ | |
1492 | if (data->state != NULL) { | |
1493 | struct nfs_delegation *delegation; | |
1494 | ||
dc0b027d | 1495 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1496 | goto out_no_action; |
aac00a8d TM |
1497 | rcu_read_lock(); |
1498 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1499 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1500 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1501 | goto unlock_no_action; | |
aac00a8d TM |
1502 | rcu_read_unlock(); |
1503 | } | |
95b72eb0 | 1504 | /* Update client id. */ |
1f0e890d | 1505 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1506 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1507 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1508 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1509 | } | |
26e976a8 | 1510 | data->timestamp = jiffies; |
035168ab | 1511 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1512 | &data->o_arg.seq_args, |
9d12b216 | 1513 | &data->o_res.seq_res, task)) |
d898528c | 1514 | return; |
5138fde0 | 1515 | rpc_call_start(task); |
6ee41268 | 1516 | return; |
652f89f6 TM |
1517 | unlock_no_action: |
1518 | rcu_read_unlock(); | |
6ee41268 TM |
1519 | out_no_action: |
1520 | task->tk_action = NULL; | |
1521 | ||
24ac23ab | 1522 | } |
1da177e4 | 1523 | |
b257957e AB |
1524 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1525 | { | |
1526 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1527 | nfs4_open_prepare(task, calldata); | |
1528 | } | |
1529 | ||
24ac23ab TM |
1530 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1531 | { | |
1532 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1533 | |
24ac23ab | 1534 | data->rpc_status = task->tk_status; |
d898528c | 1535 | |
14516c3a TM |
1536 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1537 | return; | |
d898528c | 1538 | |
24ac23ab TM |
1539 | if (task->tk_status == 0) { |
1540 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1541 | case S_IFREG: |
1542 | break; | |
1543 | case S_IFLNK: | |
24ac23ab | 1544 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1545 | break; |
1546 | case S_IFDIR: | |
24ac23ab | 1547 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1548 | break; |
1549 | default: | |
24ac23ab | 1550 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1551 | } |
26e976a8 | 1552 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1553 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1554 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1555 | } |
3e309914 | 1556 | data->rpc_done = 1; |
24ac23ab | 1557 | } |
6f926b5b | 1558 | |
24ac23ab TM |
1559 | static void nfs4_open_release(void *calldata) |
1560 | { | |
1561 | struct nfs4_opendata *data = calldata; | |
1562 | struct nfs4_state *state = NULL; | |
1563 | ||
1564 | /* If this request hasn't been cancelled, do nothing */ | |
1565 | if (data->cancelled == 0) | |
1566 | goto out_free; | |
1567 | /* In case of error, no cleanup! */ | |
3e309914 | 1568 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1569 | goto out_free; |
1570 | /* In case we need an open_confirm, no cleanup! */ | |
1571 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1572 | goto out_free; | |
24ac23ab | 1573 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1574 | if (!IS_ERR(state)) |
643168c2 | 1575 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1576 | out_free: |
c6d00e63 | 1577 | nfs4_opendata_put(data); |
24ac23ab TM |
1578 | } |
1579 | ||
1580 | static const struct rpc_call_ops nfs4_open_ops = { | |
1581 | .rpc_call_prepare = nfs4_open_prepare, | |
1582 | .rpc_call_done = nfs4_open_done, | |
1583 | .rpc_release = nfs4_open_release, | |
1584 | }; | |
1585 | ||
b257957e AB |
1586 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1587 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1588 | .rpc_call_done = nfs4_open_done, | |
1589 | .rpc_release = nfs4_open_release, | |
1590 | }; | |
1591 | ||
1592 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1593 | { |
1594 | struct inode *dir = data->dir->d_inode; | |
1595 | struct nfs_server *server = NFS_SERVER(dir); | |
1596 | struct nfs_openargs *o_arg = &data->o_arg; | |
1597 | struct nfs_openres *o_res = &data->o_res; | |
1598 | struct rpc_task *task; | |
5138fde0 TM |
1599 | struct rpc_message msg = { |
1600 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1601 | .rpc_argp = o_arg, | |
1602 | .rpc_resp = o_res, | |
1603 | .rpc_cred = data->owner->so_cred, | |
1604 | }; | |
c970aa85 TM |
1605 | struct rpc_task_setup task_setup_data = { |
1606 | .rpc_client = server->client, | |
5138fde0 | 1607 | .rpc_message = &msg, |
c970aa85 TM |
1608 | .callback_ops = &nfs4_open_ops, |
1609 | .callback_data = data, | |
101070ca | 1610 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1611 | .flags = RPC_TASK_ASYNC, |
1612 | }; | |
24ac23ab TM |
1613 | int status; |
1614 | ||
9d12b216 | 1615 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1616 | kref_get(&data->kref); |
3e309914 TM |
1617 | data->rpc_done = 0; |
1618 | data->rpc_status = 0; | |
2ced46c2 | 1619 | data->cancelled = 0; |
b257957e AB |
1620 | if (isrecover) |
1621 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1622 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1623 | if (IS_ERR(task)) |
1624 | return PTR_ERR(task); | |
1625 | status = nfs4_wait_for_completion_rpc_task(task); | |
1626 | if (status != 0) { | |
1627 | data->cancelled = 1; | |
1628 | smp_wmb(); | |
1629 | } else | |
1630 | status = data->rpc_status; | |
1631 | rpc_put_task(task); | |
1632 | ||
1633 | return status; | |
1634 | } | |
1635 | ||
1636 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1637 | { | |
1638 | struct inode *dir = data->dir->d_inode; | |
1639 | struct nfs_openres *o_res = &data->o_res; | |
1640 | int status; | |
1641 | ||
1642 | status = nfs4_run_open_task(data, 1); | |
1643 | if (status != 0 || !data->rpc_done) | |
1644 | return status; | |
1645 | ||
6926afd1 TM |
1646 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1647 | ||
b257957e AB |
1648 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1649 | status = _nfs4_proc_open_confirm(data); | |
1650 | if (status != 0) | |
1651 | return status; | |
1652 | } | |
1653 | ||
1654 | return status; | |
1655 | } | |
1656 | ||
6168f62c WAA |
1657 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1658 | struct nfs4_opendata *opendata, | |
1659 | struct nfs4_state *state, fmode_t fmode) | |
1660 | { | |
1661 | struct nfs_access_entry cache; | |
1662 | u32 mask; | |
1663 | ||
1664 | /* access call failed or for some reason the server doesn't | |
1665 | * support any access modes -- defer access call until later */ | |
1666 | if (opendata->o_res.access_supported == 0) | |
1667 | return 0; | |
1668 | ||
1669 | mask = 0; | |
bbd3a8ee WAA |
1670 | /* don't check MAY_WRITE - a newly created file may not have |
1671 | * write mode bits, but POSIX allows the creating process to write */ | |
6168f62c WAA |
1672 | if (fmode & FMODE_READ) |
1673 | mask |= MAY_READ; | |
6168f62c WAA |
1674 | if (fmode & FMODE_EXEC) |
1675 | mask |= MAY_EXEC; | |
1676 | ||
1677 | cache.cred = cred; | |
1678 | cache.jiffies = jiffies; | |
1679 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1680 | nfs_access_add_cache(state->inode, &cache); | |
1681 | ||
bbd3a8ee | 1682 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1683 | return 0; |
1684 | ||
1685 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1686 | nfs4_close_state(state, fmode); | |
1687 | return -NFS4ERR_ACCESS; | |
1688 | } | |
1689 | ||
b257957e AB |
1690 | /* |
1691 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1692 | */ | |
1693 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1694 | { | |
1695 | struct inode *dir = data->dir->d_inode; | |
1696 | struct nfs_server *server = NFS_SERVER(dir); | |
1697 | struct nfs_openargs *o_arg = &data->o_arg; | |
1698 | struct nfs_openres *o_res = &data->o_res; | |
1699 | int status; | |
1700 | ||
1701 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1702 | if (!data->rpc_done) |
1703 | return status; | |
1704 | if (status != 0) { | |
1705 | if (status == -NFS4ERR_BADNAME && | |
1706 | !(o_arg->open_flags & O_CREAT)) | |
1707 | return -ENOENT; | |
24ac23ab | 1708 | return status; |
08ef7bd3 | 1709 | } |
24ac23ab | 1710 | |
6926afd1 TM |
1711 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1712 | ||
90ff0c54 | 1713 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1714 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1715 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1716 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1717 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1718 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1719 | if (status != 0) |
24ac23ab | 1720 | return status; |
1da177e4 LT |
1721 | } |
1722 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1723 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1724 | return 0; |
1da177e4 LT |
1725 | } |
1726 | ||
d83217c1 | 1727 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1728 | { |
a78cb57a | 1729 | unsigned int loop; |
6b30954e | 1730 | int ret; |
58d9714a | 1731 | |
a78cb57a | 1732 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1733 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1734 | if (ret != 0) |
a78cb57a | 1735 | break; |
e598d843 TM |
1736 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1737 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1738 | break; |
0400a6b0 | 1739 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1740 | ret = -EIO; |
6b30954e | 1741 | } |
a78cb57a | 1742 | return ret; |
58d9714a TM |
1743 | } |
1744 | ||
d83217c1 AA |
1745 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1746 | { | |
1747 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1748 | } | |
1749 | ||
1da177e4 LT |
1750 | /* |
1751 | * OPEN_EXPIRED: | |
1752 | * reclaim state on the server after a network partition. | |
1753 | * Assumes caller holds the appropriate lock | |
1754 | */ | |
539cd03a | 1755 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1756 | { |
e56e0b78 | 1757 | struct nfs4_opendata *opendata; |
864472e9 | 1758 | int ret; |
1da177e4 | 1759 | |
6f220ed5 TM |
1760 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1761 | if (IS_ERR(opendata)) | |
1762 | return PTR_ERR(opendata); | |
864472e9 | 1763 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1764 | if (ret == -ESTALE) |
3d4ff43d | 1765 | d_drop(ctx->dentry); |
c6d00e63 | 1766 | nfs4_opendata_put(opendata); |
864472e9 | 1767 | return ret; |
1da177e4 LT |
1768 | } |
1769 | ||
a9ed2e25 | 1770 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1771 | { |
539cd03a | 1772 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1773 | struct nfs4_exception exception = { }; |
1774 | int err; | |
1775 | ||
1776 | do { | |
539cd03a | 1777 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1778 | switch (err) { |
1779 | default: | |
1780 | goto out; | |
1781 | case -NFS4ERR_GRACE: | |
1782 | case -NFS4ERR_DELAY: | |
1783 | nfs4_handle_exception(server, err, &exception); | |
1784 | err = 0; | |
1785 | } | |
202b50dc | 1786 | } while (exception.retry); |
a9ed2e25 | 1787 | out: |
202b50dc TM |
1788 | return err; |
1789 | } | |
1790 | ||
1da177e4 LT |
1791 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1792 | { | |
1da177e4 | 1793 | struct nfs_open_context *ctx; |
864472e9 | 1794 | int ret; |
1da177e4 | 1795 | |
864472e9 TM |
1796 | ctx = nfs4_state_find_open_context(state); |
1797 | if (IS_ERR(ctx)) | |
1798 | return PTR_ERR(ctx); | |
539cd03a | 1799 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1800 | put_nfs_open_context(ctx); |
1801 | return ret; | |
1da177e4 LT |
1802 | } |
1803 | ||
f062eb6c | 1804 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1805 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1806 | { |
f062eb6c | 1807 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd CL |
1808 | nfs4_stateid *stateid = &state->stateid; |
1809 | int status; | |
1810 | ||
1811 | /* If a state reset has been done, test_stateid is unneeded */ | |
1812 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1813 | return; | |
1814 | ||
1815 | status = nfs41_test_stateid(server, stateid); | |
1816 | if (status != NFS_OK) { | |
1817 | /* Free the stateid unless the server explicitly | |
1818 | * informs us the stateid is unrecognized. */ | |
1819 | if (status != -NFS4ERR_BAD_STATEID) | |
1820 | nfs41_free_stateid(server, stateid); | |
6938867e | 1821 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1822 | |
6938867e BS |
1823 | write_seqlock(&state->seqlock); |
1824 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1825 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1826 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1827 | } | |
1828 | } | |
1829 | ||
1830 | /** | |
1831 | * nfs41_check_open_stateid - possibly free an open stateid | |
1832 | * | |
1833 | * @state: NFSv4 state for an inode | |
1834 | * | |
1835 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1836 | * Otherwise a negative NFS4ERR value is returned. | |
1837 | */ | |
1838 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1839 | { | |
1840 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1841 | nfs4_stateid *stateid = &state->open_stateid; |
3e60ffdd CL |
1842 | int status; |
1843 | ||
1844 | /* If a state reset has been done, test_stateid is unneeded */ | |
1845 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1846 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1847 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1848 | return -NFS4ERR_BAD_STATEID; | |
1849 | ||
1850 | status = nfs41_test_stateid(server, stateid); | |
1851 | if (status != NFS_OK) { | |
1852 | /* Free the stateid unless the server explicitly | |
1853 | * informs us the stateid is unrecognized. */ | |
1854 | if (status != -NFS4ERR_BAD_STATEID) | |
1855 | nfs41_free_stateid(server, stateid); | |
1856 | ||
1857 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1858 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1859 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
b01dd1d8 BS |
1860 | } |
1861 | return status; | |
1862 | } | |
1863 | ||
1864 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1865 | { | |
eb64cf96 | 1866 | int status; |
b01dd1d8 | 1867 | |
3e60ffdd CL |
1868 | nfs41_clear_delegation_stateid(state); |
1869 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
1870 | if (status != NFS_OK) |
1871 | status = nfs4_open_expired(sp, state); | |
1872 | return status; | |
f062eb6c BS |
1873 | } |
1874 | #endif | |
1875 | ||
aa53ed54 JL |
1876 | /* |
1877 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1878 | * fields corresponding to attributes that were used to store the verifier. | |
1879 | * Make sure we clobber those fields in the later setattr call | |
1880 | */ | |
1881 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1882 | { | |
1883 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1884 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1885 | sattr->ia_valid |= ATTR_ATIME; | |
1886 | ||
1887 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1888 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1889 | sattr->ia_valid |= ATTR_MTIME; | |
1890 | } | |
1891 | ||
1da177e4 | 1892 | /* |
24ac23ab | 1893 | * Returns a referenced nfs4_state |
1da177e4 | 1894 | */ |
82be417a AA |
1895 | static int _nfs4_do_open(struct inode *dir, |
1896 | struct dentry *dentry, | |
1897 | fmode_t fmode, | |
1898 | int flags, | |
1899 | struct iattr *sattr, | |
1900 | struct rpc_cred *cred, | |
1901 | struct nfs4_state **res, | |
1902 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1903 | { |
1904 | struct nfs4_state_owner *sp; | |
1905 | struct nfs4_state *state = NULL; | |
1906 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1907 | struct nfs4_opendata *opendata; |
aac00a8d | 1908 | int status; |
1da177e4 LT |
1909 | |
1910 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1911 | status = -ENOMEM; |
d1e284d5 TM |
1912 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1913 | if (sp == NULL) { | |
1da177e4 LT |
1914 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1915 | goto out_err; | |
1916 | } | |
58d9714a TM |
1917 | status = nfs4_recover_expired_lease(server); |
1918 | if (status != 0) | |
b4454fe1 | 1919 | goto err_put_state_owner; |
82a2c1b7 AV |
1920 | if (dentry->d_inode != NULL) |
1921 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1922 | status = -ENOMEM; |
82a2c1b7 | 1923 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1924 | if (opendata == NULL) |
95d35cb4 | 1925 | goto err_put_state_owner; |
1da177e4 | 1926 | |
82be417a AA |
1927 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
1928 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
1929 | if (!opendata->f_attr.mdsthreshold) | |
1930 | goto err_opendata_put; | |
1549210f | 1931 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 1932 | } |
82a2c1b7 AV |
1933 | if (dentry->d_inode != NULL) |
1934 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1935 | |
24ac23ab | 1936 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1937 | if (status != 0) |
c6d00e63 | 1938 | goto err_opendata_put; |
1da177e4 | 1939 | |
24ac23ab | 1940 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1941 | status = PTR_ERR(state); |
1942 | if (IS_ERR(state)) | |
c6d00e63 | 1943 | goto err_opendata_put; |
0df5dd4a | 1944 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1945 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e | 1946 | |
6168f62c WAA |
1947 | status = nfs4_opendata_access(cred, opendata, state, fmode); |
1948 | if (status != 0) | |
1949 | goto err_opendata_put; | |
1950 | ||
0ab64e0e TM |
1951 | if (opendata->o_arg.open_flags & O_EXCL) { |
1952 | nfs4_exclusive_attrset(opendata, sattr); | |
1953 | ||
1954 | nfs_fattr_init(opendata->o_res.f_attr); | |
1955 | status = nfs4_do_setattr(state->inode, cred, | |
1956 | opendata->o_res.f_attr, sattr, | |
1957 | state); | |
1958 | if (status == 0) | |
1959 | nfs_setattr_update_inode(state->inode, sattr); | |
1960 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1961 | } | |
82be417a AA |
1962 | |
1963 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
1964 | *ctx_th = opendata->f_attr.mdsthreshold; | |
1965 | else | |
1966 | kfree(opendata->f_attr.mdsthreshold); | |
1967 | opendata->f_attr.mdsthreshold = NULL; | |
1968 | ||
c6d00e63 | 1969 | nfs4_opendata_put(opendata); |
1da177e4 | 1970 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1971 | *res = state; |
1972 | return 0; | |
c6d00e63 | 1973 | err_opendata_put: |
82be417a | 1974 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 1975 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
1976 | err_put_state_owner: |
1977 | nfs4_put_state_owner(sp); | |
1da177e4 | 1978 | out_err: |
1da177e4 LT |
1979 | *res = NULL; |
1980 | return status; | |
1981 | } | |
1982 | ||
1983 | ||
82be417a AA |
1984 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
1985 | struct dentry *dentry, | |
1986 | fmode_t fmode, | |
1987 | int flags, | |
1988 | struct iattr *sattr, | |
1989 | struct rpc_cred *cred, | |
1990 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1991 | { |
1992 | struct nfs4_exception exception = { }; | |
1993 | struct nfs4_state *res; | |
1994 | int status; | |
1995 | ||
6168f62c | 1996 | fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC; |
1da177e4 | 1997 | do { |
82be417a AA |
1998 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
1999 | &res, ctx_th); | |
1da177e4 LT |
2000 | if (status == 0) |
2001 | break; | |
2002 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2003 | * book-keeping w.r.t. state-changing operations | |
2004 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2005 | * It is actually a sign of a bug on the client or on the server. | |
2006 | * | |
2007 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2008 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2009 | * have unhashed the old state_owner for us, and that we can |
2010 | * therefore safely retry using a new one. We should still warn | |
2011 | * the user though... | |
2012 | */ | |
2013 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2014 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2015 | " returned a bad sequence-id error!\n", |
2016 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2017 | exception.retry = 1; |
2018 | continue; | |
2019 | } | |
550f5747 TM |
2020 | /* |
2021 | * BAD_STATEID on OPEN means that the server cancelled our | |
2022 | * state before it received the OPEN_CONFIRM. | |
2023 | * Recover by retrying the request as per the discussion | |
2024 | * on Page 181 of RFC3530. | |
2025 | */ | |
2026 | if (status == -NFS4ERR_BAD_STATEID) { | |
2027 | exception.retry = 1; | |
2028 | continue; | |
2029 | } | |
aac00a8d TM |
2030 | if (status == -EAGAIN) { |
2031 | /* We must have found a delegation */ | |
2032 | exception.retry = 1; | |
2033 | continue; | |
2034 | } | |
1da177e4 LT |
2035 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
2036 | status, &exception)); | |
2037 | } while (exception.retry); | |
2038 | return res; | |
2039 | } | |
2040 | ||
659bfcd6 TM |
2041 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2042 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2043 | struct nfs4_state *state) | |
1da177e4 | 2044 | { |
3e4f6290 | 2045 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2046 | struct nfs_setattrargs arg = { |
3e4f6290 | 2047 | .fh = NFS_FH(inode), |
1da177e4 LT |
2048 | .iap = sattr, |
2049 | .server = server, | |
2050 | .bitmask = server->attr_bitmask, | |
2051 | }; | |
2052 | struct nfs_setattrres res = { | |
2053 | .fattr = fattr, | |
2054 | .server = server, | |
2055 | }; | |
2056 | struct rpc_message msg = { | |
659bfcd6 TM |
2057 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2058 | .rpc_argp = &arg, | |
2059 | .rpc_resp = &res, | |
2060 | .rpc_cred = cred, | |
1da177e4 | 2061 | }; |
26e976a8 | 2062 | unsigned long timestamp = jiffies; |
65e4308d | 2063 | int status; |
1da177e4 | 2064 | |
0e574af1 | 2065 | nfs_fattr_init(fattr); |
1da177e4 | 2066 | |
4fc8796d | 2067 | if (state != NULL) { |
2a369153 TM |
2068 | struct nfs_lockowner lockowner = { |
2069 | .l_owner = current->files, | |
2070 | .l_pid = current->tgid, | |
2071 | }; | |
4fc8796d | 2072 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2073 | &lockowner); |
4fc8796d TM |
2074 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, |
2075 | FMODE_WRITE)) { | |
3e4f6290 | 2076 | /* Use that stateid */ |
08e9eac4 | 2077 | } else |
f597c537 | 2078 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2079 | |
7c513058 | 2080 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2081 | if (status == 0 && state != NULL) |
2082 | renew_lease(server, timestamp); | |
65e4308d | 2083 | return status; |
1da177e4 LT |
2084 | } |
2085 | ||
659bfcd6 TM |
2086 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2087 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2088 | struct nfs4_state *state) | |
1da177e4 | 2089 | { |
3e4f6290 | 2090 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2091 | struct nfs4_exception exception = { |
2092 | .state = state, | |
3114ea7a | 2093 | .inode = inode, |
a1d0b5ee | 2094 | }; |
1da177e4 LT |
2095 | int err; |
2096 | do { | |
451146be TM |
2097 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2098 | switch (err) { | |
2099 | case -NFS4ERR_OPENMODE: | |
2100 | if (state && !(state->state & FMODE_WRITE)) { | |
2101 | err = -EBADF; | |
2102 | if (sattr->ia_valid & ATTR_OPEN) | |
2103 | err = -EACCES; | |
2104 | goto out; | |
2105 | } | |
2106 | } | |
2107 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2108 | } while (exception.retry); |
451146be | 2109 | out: |
1da177e4 LT |
2110 | return err; |
2111 | } | |
2112 | ||
2113 | struct nfs4_closedata { | |
2114 | struct inode *inode; | |
2115 | struct nfs4_state *state; | |
2116 | struct nfs_closeargs arg; | |
2117 | struct nfs_closeres res; | |
516a6af6 | 2118 | struct nfs_fattr fattr; |
26e976a8 | 2119 | unsigned long timestamp; |
f7e8917a FI |
2120 | bool roc; |
2121 | u32 roc_barrier; | |
1da177e4 LT |
2122 | }; |
2123 | ||
963d8fe5 | 2124 | static void nfs4_free_closedata(void *data) |
9512135d | 2125 | { |
963d8fe5 TM |
2126 | struct nfs4_closedata *calldata = data; |
2127 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2128 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2129 | |
f7e8917a FI |
2130 | if (calldata->roc) |
2131 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2132 | nfs4_put_open_state(calldata->state); |
2133 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2134 | nfs4_put_state_owner(sp); |
643168c2 | 2135 | nfs_sb_deactive(sb); |
9512135d TM |
2136 | kfree(calldata); |
2137 | } | |
2138 | ||
88069f77 TM |
2139 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2140 | fmode_t fmode) | |
2141 | { | |
2142 | spin_lock(&state->owner->so_lock); | |
2143 | if (!(fmode & FMODE_READ)) | |
2144 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2145 | if (!(fmode & FMODE_WRITE)) | |
2146 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2147 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2148 | spin_unlock(&state->owner->so_lock); | |
2149 | } | |
2150 | ||
963d8fe5 | 2151 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2152 | { |
963d8fe5 | 2153 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2154 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2155 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2156 | ||
a3ca5651 | 2157 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2158 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2159 | return; | |
1da177e4 LT |
2160 | /* hmm. we are done with the inode, and in the process of freeing |
2161 | * the state_owner. we keep this around to process errors | |
2162 | */ | |
1da177e4 LT |
2163 | switch (task->tk_status) { |
2164 | case 0: | |
f7e8917a FI |
2165 | if (calldata->roc) |
2166 | pnfs_roc_set_barrier(state->inode, | |
2167 | calldata->roc_barrier); | |
45328c35 | 2168 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2169 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2170 | nfs4_close_clear_stateid_flags(state, |
2171 | calldata->arg.fmode); | |
1da177e4 LT |
2172 | break; |
2173 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2174 | case -NFS4ERR_OLD_STATEID: |
2175 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2176 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2177 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2178 | break; |
1da177e4 | 2179 | default: |
72211dbe TM |
2180 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2181 | rpc_restart_call_prepare(task); | |
1da177e4 | 2182 | } |
72211dbe | 2183 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2184 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2185 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2186 | } |
2187 | ||
4ce70ada | 2188 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2189 | { |
4ce70ada | 2190 | struct nfs4_closedata *calldata = data; |
9512135d | 2191 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2192 | struct inode *inode = calldata->inode; |
88069f77 | 2193 | int call_close = 0; |
9512135d | 2194 | |
a3ca5651 | 2195 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2196 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2197 | return; |
003707c7 | 2198 | |
88069f77 TM |
2199 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2200 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2201 | spin_lock(&state->owner->so_lock); |
003707c7 | 2202 | /* Calculate the change in open mode */ |
e7616923 | 2203 | if (state->n_rdwr == 0) { |
003707c7 | 2204 | if (state->n_rdonly == 0) { |
88069f77 TM |
2205 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2206 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2207 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2208 | } |
2209 | if (state->n_wronly == 0) { | |
88069f77 TM |
2210 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2211 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2212 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2213 | } |
e7616923 | 2214 | } |
4cecb76f | 2215 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2216 | |
2217 | if (!call_close) { | |
963d8fe5 TM |
2218 | /* Note: exit _without_ calling nfs4_close_done */ |
2219 | task->tk_action = NULL; | |
a3ca5651 | 2220 | goto out; |
9512135d | 2221 | } |
88069f77 | 2222 | |
f7e8917a | 2223 | if (calldata->arg.fmode == 0) { |
88069f77 | 2224 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2225 | if (calldata->roc && |
7fdab069 | 2226 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) |
a3ca5651 | 2227 | goto out; |
f7e8917a | 2228 | } |
88069f77 | 2229 | |
516a6af6 | 2230 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2231 | calldata->timestamp = jiffies; |
7fdab069 | 2232 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2233 | &calldata->arg.seq_args, |
2234 | &calldata->res.seq_res, | |
2235 | task)) | |
a3ca5651 | 2236 | goto out; |
5138fde0 | 2237 | rpc_call_start(task); |
a3ca5651 CL |
2238 | out: |
2239 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2240 | } |
2241 | ||
963d8fe5 | 2242 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2243 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2244 | .rpc_call_done = nfs4_close_done, |
2245 | .rpc_release = nfs4_free_closedata, | |
2246 | }; | |
2247 | ||
1da177e4 LT |
2248 | /* |
2249 | * It is possible for data to be read/written from a mem-mapped file | |
2250 | * after the sys_close call (which hits the vfs layer as a flush). | |
2251 | * This means that we can't safely call nfsv4 close on a file until | |
2252 | * the inode is cleared. This in turn means that we are not good | |
2253 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2254 | * share state even when we are done with one of the three share | |
2255 | * stateid's in the inode. | |
2256 | * | |
2257 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2258 | */ | |
1f7977c1 | 2259 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2260 | { |
4a35bd41 | 2261 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2262 | struct nfs4_closedata *calldata; |
b39e625b TM |
2263 | struct nfs4_state_owner *sp = state->owner; |
2264 | struct rpc_task *task; | |
5138fde0 TM |
2265 | struct rpc_message msg = { |
2266 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2267 | .rpc_cred = state->owner->so_cred, | |
2268 | }; | |
c970aa85 TM |
2269 | struct rpc_task_setup task_setup_data = { |
2270 | .rpc_client = server->client, | |
5138fde0 | 2271 | .rpc_message = &msg, |
c970aa85 | 2272 | .callback_ops = &nfs4_close_ops, |
101070ca | 2273 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2274 | .flags = RPC_TASK_ASYNC, |
2275 | }; | |
9512135d | 2276 | int status = -ENOMEM; |
1da177e4 | 2277 | |
8535b2be | 2278 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2279 | if (calldata == NULL) |
9512135d | 2280 | goto out; |
9d12b216 | 2281 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2282 | calldata->inode = state->inode; |
1da177e4 | 2283 | calldata->state = state; |
4a35bd41 | 2284 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2285 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2286 | /* Serialization for the sequence id */ |
8535b2be | 2287 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2288 | if (calldata->arg.seqid == NULL) |
2289 | goto out_free_calldata; | |
dc0b027d | 2290 | calldata->arg.fmode = 0; |
a65318bf | 2291 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2292 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2293 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2294 | calldata->res.server = server; |
1f7977c1 | 2295 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2296 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2297 | |
1174dd1f TM |
2298 | msg.rpc_argp = &calldata->arg; |
2299 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2300 | task_setup_data.callback_data = calldata; |
2301 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2302 | if (IS_ERR(task)) |
2303 | return PTR_ERR(task); | |
a49c3c77 TM |
2304 | status = 0; |
2305 | if (wait) | |
2306 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2307 | rpc_put_task(task); |
a49c3c77 | 2308 | return status; |
9512135d TM |
2309 | out_free_calldata: |
2310 | kfree(calldata); | |
2311 | out: | |
b39e625b TM |
2312 | nfs4_put_open_state(state); |
2313 | nfs4_put_state_owner(sp); | |
9512135d | 2314 | return status; |
1da177e4 LT |
2315 | } |
2316 | ||
2b484297 | 2317 | static struct inode * |
cd9a1c0e | 2318 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2319 | { |
1da177e4 | 2320 | struct nfs4_state *state; |
1da177e4 | 2321 | |
565277f6 | 2322 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2323 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2324 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2325 | if (IS_ERR(state)) |
2326 | return ERR_CAST(state); | |
cd9a1c0e | 2327 | ctx->state = state; |
f46e0bd3 | 2328 | return igrab(state->inode); |
1da177e4 LT |
2329 | } |
2330 | ||
1185a552 | 2331 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2332 | { |
2333 | if (ctx->state == NULL) | |
2334 | return; | |
2335 | if (is_sync) | |
643168c2 | 2336 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2337 | else |
643168c2 | 2338 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2339 | } |
1da177e4 LT |
2340 | |
2341 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2342 | { | |
43652ad5 BH |
2343 | struct nfs4_server_caps_arg args = { |
2344 | .fhandle = fhandle, | |
2345 | }; | |
1da177e4 LT |
2346 | struct nfs4_server_caps_res res = {}; |
2347 | struct rpc_message msg = { | |
2348 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2349 | .rpc_argp = &args, |
1da177e4 LT |
2350 | .rpc_resp = &res, |
2351 | }; | |
2352 | int status; | |
2353 | ||
7c513058 | 2354 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2355 | if (status == 0) { |
2356 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2357 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2358 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2359 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2360 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2361 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2362 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2363 | server->caps |= NFS_CAP_ACLS; | |
2364 | if (res.has_links != 0) | |
2365 | server->caps |= NFS_CAP_HARDLINKS; | |
2366 | if (res.has_symlinks != 0) | |
2367 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2368 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2369 | server->caps |= NFS_CAP_FILEID; | |
2370 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2371 | server->caps |= NFS_CAP_MODE; | |
2372 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2373 | server->caps |= NFS_CAP_NLINK; | |
2374 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2375 | server->caps |= NFS_CAP_OWNER; | |
2376 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2377 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2378 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2379 | server->caps |= NFS_CAP_ATIME; | |
2380 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2381 | server->caps |= NFS_CAP_CTIME; | |
2382 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2383 | server->caps |= NFS_CAP_MTIME; | |
2384 | ||
a65318bf TM |
2385 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2386 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2387 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2388 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2389 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2390 | } |
cccef3b9 | 2391 | |
1da177e4 LT |
2392 | return status; |
2393 | } | |
2394 | ||
55a97593 | 2395 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2396 | { |
2397 | struct nfs4_exception exception = { }; | |
2398 | int err; | |
2399 | do { | |
2400 | err = nfs4_handle_exception(server, | |
2401 | _nfs4_server_capabilities(server, fhandle), | |
2402 | &exception); | |
2403 | } while (exception.retry); | |
2404 | return err; | |
2405 | } | |
2406 | ||
2407 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2408 | struct nfs_fsinfo *info) | |
2409 | { | |
1da177e4 LT |
2410 | struct nfs4_lookup_root_arg args = { |
2411 | .bitmask = nfs4_fattr_bitmap, | |
2412 | }; | |
2413 | struct nfs4_lookup_res res = { | |
2414 | .server = server, | |
0e574af1 | 2415 | .fattr = info->fattr, |
1da177e4 LT |
2416 | .fh = fhandle, |
2417 | }; | |
2418 | struct rpc_message msg = { | |
2419 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2420 | .rpc_argp = &args, | |
2421 | .rpc_resp = &res, | |
2422 | }; | |
008f55d0 | 2423 | |
0e574af1 | 2424 | nfs_fattr_init(info->fattr); |
7c513058 | 2425 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2426 | } |
2427 | ||
2428 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2429 | struct nfs_fsinfo *info) | |
2430 | { | |
2431 | struct nfs4_exception exception = { }; | |
2432 | int err; | |
2433 | do { | |
fb8a5ba8 BS |
2434 | err = _nfs4_lookup_root(server, fhandle, info); |
2435 | switch (err) { | |
2436 | case 0: | |
2437 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2438 | goto out; |
fb8a5ba8 BS |
2439 | default: |
2440 | err = nfs4_handle_exception(server, err, &exception); | |
2441 | } | |
1da177e4 | 2442 | } while (exception.retry); |
05e9cfb4 | 2443 | out: |
1da177e4 LT |
2444 | return err; |
2445 | } | |
2446 | ||
8f70e95f BS |
2447 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2448 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2449 | { | |
2450 | struct rpc_auth *auth; | |
2451 | int ret; | |
2452 | ||
2453 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2454 | if (IS_ERR(auth)) { |
8f70e95f BS |
2455 | ret = -EIO; |
2456 | goto out; | |
2457 | } | |
2458 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2459 | out: |
2460 | return ret; | |
2461 | } | |
2462 | ||
801a16dc | 2463 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2464 | struct nfs_fsinfo *info) |
1da177e4 | 2465 | { |
8f70e95f | 2466 | int i, len, status = 0; |
0fabee24 | 2467 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2468 | |
6a1a1e34 CL |
2469 | len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array)); |
2470 | BUG_ON(len < 0); | |
8f70e95f BS |
2471 | |
2472 | for (i = 0; i < len; i++) { | |
6a1a1e34 CL |
2473 | /* AUTH_UNIX is the default flavor if none was specified, |
2474 | * thus has already been tried. */ | |
2475 | if (flav_array[i] == RPC_AUTH_UNIX) | |
2476 | continue; | |
2477 | ||
8f70e95f | 2478 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2479 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2480 | continue; |
2481 | break; | |
8f70e95f | 2482 | } |
fb8a5ba8 BS |
2483 | /* |
2484 | * -EACCESS could mean that the user doesn't have correct permissions | |
2485 | * to access the mount. It could also mean that we tried to mount | |
2486 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2487 | * existing mount programs don't handle -EACCES very well so it should | |
2488 | * be mapped to -EPERM instead. | |
2489 | */ | |
2490 | if (status == -EACCES) | |
2491 | status = -EPERM; | |
801a16dc BS |
2492 | return status; |
2493 | } | |
2494 | ||
2495 | /* | |
2496 | * get the file handle for the "/" directory on the server | |
2497 | */ | |
3028eb2b BS |
2498 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2499 | struct nfs_fsinfo *info) | |
801a16dc | 2500 | { |
fca78d6d | 2501 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2502 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2503 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2504 | /* | |
2505 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2506 | * by nfs4_map_errors() as this function exits. | |
2507 | */ | |
fca78d6d | 2508 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2509 | if (status == 0) |
2510 | status = nfs4_server_capabilities(server, fhandle); | |
2511 | if (status == 0) | |
2512 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2513 | return nfs4_map_errors(status); |
1da177e4 LT |
2514 | } |
2515 | ||
bae36241 BS |
2516 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2517 | struct nfs_fsinfo *info) | |
2518 | { | |
2519 | int error; | |
2520 | struct nfs_fattr *fattr = info->fattr; | |
2521 | ||
2522 | error = nfs4_server_capabilities(server, mntfh); | |
2523 | if (error < 0) { | |
2524 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2525 | return error; | |
2526 | } | |
2527 | ||
2528 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2529 | if (error < 0) { | |
2530 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2531 | return error; | |
2532 | } | |
2533 | ||
2534 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2535 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2536 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2537 | ||
2538 | return error; | |
2539 | } | |
2540 | ||
6b97fd3d MN |
2541 | /* |
2542 | * Get locations and (maybe) other attributes of a referral. | |
2543 | * Note that we'll actually follow the referral later when | |
2544 | * we detect fsid mismatch in inode revalidation | |
2545 | */ | |
f05d147f BS |
2546 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2547 | const struct qstr *name, struct nfs_fattr *fattr, | |
2548 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2549 | { |
2550 | int status = -ENOMEM; | |
2551 | struct page *page = NULL; | |
2552 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2553 | |
2554 | page = alloc_page(GFP_KERNEL); | |
2555 | if (page == NULL) | |
2556 | goto out; | |
2557 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2558 | if (locations == NULL) | |
2559 | goto out; | |
2560 | ||
f05d147f | 2561 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2562 | if (status != 0) |
2563 | goto out; | |
2564 | /* Make sure server returned a different fsid for the referral */ | |
2565 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2566 | dprintk("%s: server did not return a different fsid for" |
2567 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2568 | status = -EIO; |
2569 | goto out; | |
2570 | } | |
533eb461 AA |
2571 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2572 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2573 | |
533eb461 | 2574 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2575 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2576 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2577 | out: | |
2578 | if (page) | |
2579 | __free_page(page); | |
5d7ca35a | 2580 | kfree(locations); |
6b97fd3d MN |
2581 | return status; |
2582 | } | |
2583 | ||
1da177e4 LT |
2584 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2585 | { | |
2586 | struct nfs4_getattr_arg args = { | |
2587 | .fh = fhandle, | |
2588 | .bitmask = server->attr_bitmask, | |
2589 | }; | |
2590 | struct nfs4_getattr_res res = { | |
2591 | .fattr = fattr, | |
2592 | .server = server, | |
2593 | }; | |
2594 | struct rpc_message msg = { | |
2595 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2596 | .rpc_argp = &args, | |
2597 | .rpc_resp = &res, | |
2598 | }; | |
2599 | ||
0e574af1 | 2600 | nfs_fattr_init(fattr); |
7c513058 | 2601 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2602 | } |
2603 | ||
2604 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2605 | { | |
2606 | struct nfs4_exception exception = { }; | |
2607 | int err; | |
2608 | do { | |
2609 | err = nfs4_handle_exception(server, | |
2610 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2611 | &exception); | |
2612 | } while (exception.retry); | |
2613 | return err; | |
2614 | } | |
2615 | ||
2616 | /* | |
2617 | * The file is not closed if it is opened due to the a request to change | |
2618 | * the size of the file. The open call will not be needed once the | |
2619 | * VFS layer lookup-intents are implemented. | |
2620 | * | |
2621 | * Close is called when the inode is destroyed. | |
2622 | * If we haven't opened the file for O_WRONLY, we | |
2623 | * need to in the size_change case to obtain a stateid. | |
2624 | * | |
2625 | * Got race? | |
2626 | * Because OPEN is always done by name in nfsv4, it is | |
2627 | * possible that we opened a different file by the same | |
2628 | * name. We can recognize this race condition, but we | |
2629 | * can't do anything about it besides returning an error. | |
2630 | * | |
2631 | * This will be fixed with VFS changes (lookup-intent). | |
2632 | */ | |
2633 | static int | |
2634 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2635 | struct iattr *sattr) | |
2636 | { | |
08e9eac4 | 2637 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2638 | struct rpc_cred *cred = NULL; |
d530838b | 2639 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2640 | int status; |
2641 | ||
8a1636c4 BH |
2642 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2643 | pnfs_return_layout(inode); | |
2644 | ||
0e574af1 | 2645 | nfs_fattr_init(fattr); |
1da177e4 | 2646 | |
2669940d AA |
2647 | /* Deal with open(O_TRUNC) */ |
2648 | if (sattr->ia_valid & ATTR_OPEN) | |
2649 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2650 | ||
2651 | /* Optimization: if the end result is no change, don't RPC */ | |
2652 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2653 | return 0; | |
2654 | ||
d530838b | 2655 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2656 | if (sattr->ia_valid & ATTR_FILE) { |
2657 | struct nfs_open_context *ctx; | |
2658 | ||
2659 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2660 | if (ctx) { |
2661 | cred = ctx->cred; | |
2662 | state = ctx->state; | |
2663 | } | |
659bfcd6 | 2664 | } |
08e9eac4 | 2665 | |
659bfcd6 | 2666 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2667 | if (status == 0) |
2668 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2669 | return status; |
2670 | } | |
2671 | ||
0c2e53f1 TM |
2672 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2673 | const struct qstr *name, struct nfs_fh *fhandle, | |
2674 | struct nfs_fattr *fattr) | |
2b3de441 | 2675 | { |
0c2e53f1 | 2676 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2677 | int status; |
2678 | struct nfs4_lookup_arg args = { | |
2679 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2680 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2681 | .name = name, |
2682 | }; | |
2683 | struct nfs4_lookup_res res = { | |
2684 | .server = server, | |
2685 | .fattr = fattr, | |
2686 | .fh = fhandle, | |
2687 | }; | |
2688 | struct rpc_message msg = { | |
2689 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2690 | .rpc_argp = &args, | |
2691 | .rpc_resp = &res, | |
2692 | }; | |
2693 | ||
2694 | nfs_fattr_init(fattr); | |
2695 | ||
1da177e4 | 2696 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2697 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2698 | dprintk("NFS reply lookup: %d\n", status); |
2699 | return status; | |
2700 | } | |
2701 | ||
72de53ec | 2702 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2703 | { |
7ebb9315 | 2704 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2705 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2706 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2707 | fattr->nlink = 2; | |
2708 | } | |
2709 | ||
72de53ec BS |
2710 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2711 | struct qstr *name, struct nfs_fh *fhandle, | |
2712 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2713 | { |
2714 | struct nfs4_exception exception = { }; | |
72de53ec | 2715 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2716 | int err; |
2717 | do { | |
72de53ec BS |
2718 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2719 | switch (err) { | |
08ef7bd3 | 2720 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2721 | err = -ENOENT; |
2722 | goto out; | |
0c2e53f1 | 2723 | case -NFS4ERR_MOVED: |
f05d147f | 2724 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2725 | goto out; |
0c2e53f1 | 2726 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2727 | err = -EPERM; |
2728 | if (client != *clnt) | |
2729 | goto out; | |
2730 | ||
2731 | client = nfs4_create_sec_client(client, dir, name); | |
2732 | if (IS_ERR(client)) | |
2733 | return PTR_ERR(client); | |
2734 | ||
2735 | exception.retry = 1; | |
2736 | break; | |
2737 | default: | |
2738 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2739 | } |
1da177e4 | 2740 | } while (exception.retry); |
72de53ec BS |
2741 | |
2742 | out: | |
2743 | if (err == 0) | |
2744 | *clnt = client; | |
2745 | else if (client != *clnt) | |
2746 | rpc_shutdown_client(client); | |
2747 | ||
1da177e4 LT |
2748 | return err; |
2749 | } | |
2750 | ||
80a16b21 | 2751 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2752 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2753 | { | |
2754 | int status; | |
2755 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2756 | ||
2757 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2758 | if (client != NFS_CLIENT(dir)) { | |
2759 | rpc_shutdown_client(client); | |
2760 | nfs_fixup_secinfo_attributes(fattr); | |
2761 | } | |
2762 | return status; | |
2763 | } | |
2764 | ||
f05d147f BS |
2765 | struct rpc_clnt * |
2766 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2767 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2768 | { | |
2769 | int status; | |
2770 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2771 | ||
2772 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2773 | if (status < 0) { | |
2774 | rpc_shutdown_client(client); | |
2775 | return ERR_PTR(status); | |
2776 | } | |
2777 | return client; | |
2778 | } | |
2779 | ||
1da177e4 LT |
2780 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2781 | { | |
76b32999 | 2782 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2783 | struct nfs4_accessargs args = { |
2784 | .fh = NFS_FH(inode), | |
a4980e78 | 2785 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2786 | }; |
2787 | struct nfs4_accessres res = { | |
2788 | .server = server, | |
1da177e4 | 2789 | }; |
1da177e4 LT |
2790 | struct rpc_message msg = { |
2791 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2792 | .rpc_argp = &args, | |
2793 | .rpc_resp = &res, | |
2794 | .rpc_cred = entry->cred, | |
2795 | }; | |
2796 | int mode = entry->mask; | |
2797 | int status; | |
2798 | ||
2799 | /* | |
2800 | * Determine which access bits we want to ask for... | |
2801 | */ | |
2802 | if (mode & MAY_READ) | |
2803 | args.access |= NFS4_ACCESS_READ; | |
2804 | if (S_ISDIR(inode->i_mode)) { | |
2805 | if (mode & MAY_WRITE) | |
2806 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2807 | if (mode & MAY_EXEC) | |
2808 | args.access |= NFS4_ACCESS_LOOKUP; | |
2809 | } else { | |
2810 | if (mode & MAY_WRITE) | |
2811 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2812 | if (mode & MAY_EXEC) | |
2813 | args.access |= NFS4_ACCESS_EXECUTE; | |
2814 | } | |
c407d41a TM |
2815 | |
2816 | res.fattr = nfs_alloc_fattr(); | |
2817 | if (res.fattr == NULL) | |
2818 | return -ENOMEM; | |
2819 | ||
7c513058 | 2820 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2821 | if (!status) { |
6168f62c | 2822 | nfs_access_set_mask(entry, res.access); |
c407d41a | 2823 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2824 | } |
c407d41a | 2825 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2826 | return status; |
2827 | } | |
2828 | ||
2829 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2830 | { | |
2831 | struct nfs4_exception exception = { }; | |
2832 | int err; | |
2833 | do { | |
2834 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2835 | _nfs4_proc_access(inode, entry), | |
2836 | &exception); | |
2837 | } while (exception.retry); | |
2838 | return err; | |
2839 | } | |
2840 | ||
2841 | /* | |
2842 | * TODO: For the time being, we don't try to get any attributes | |
2843 | * along with any of the zero-copy operations READ, READDIR, | |
2844 | * READLINK, WRITE. | |
2845 | * | |
2846 | * In the case of the first three, we want to put the GETATTR | |
2847 | * after the read-type operation -- this is because it is hard | |
2848 | * to predict the length of a GETATTR response in v4, and thus | |
2849 | * align the READ data correctly. This means that the GETATTR | |
2850 | * may end up partially falling into the page cache, and we should | |
2851 | * shift it into the 'tail' of the xdr_buf before processing. | |
2852 | * To do this efficiently, we need to know the total length | |
2853 | * of data received, which doesn't seem to be available outside | |
2854 | * of the RPC layer. | |
2855 | * | |
2856 | * In the case of WRITE, we also want to put the GETATTR after | |
2857 | * the operation -- in this case because we want to make sure | |
140150db | 2858 | * we get the post-operation mtime and size. |
1da177e4 LT |
2859 | * |
2860 | * Both of these changes to the XDR layer would in fact be quite | |
2861 | * minor, but I decided to leave them for a subsequent patch. | |
2862 | */ | |
2863 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2864 | unsigned int pgbase, unsigned int pglen) | |
2865 | { | |
2866 | struct nfs4_readlink args = { | |
2867 | .fh = NFS_FH(inode), | |
2868 | .pgbase = pgbase, | |
2869 | .pglen = pglen, | |
2870 | .pages = &page, | |
2871 | }; | |
f50c7000 | 2872 | struct nfs4_readlink_res res; |
1da177e4 LT |
2873 | struct rpc_message msg = { |
2874 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2875 | .rpc_argp = &args, | |
f50c7000 | 2876 | .rpc_resp = &res, |
1da177e4 LT |
2877 | }; |
2878 | ||
7c513058 | 2879 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2880 | } |
2881 | ||
2882 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2883 | unsigned int pgbase, unsigned int pglen) | |
2884 | { | |
2885 | struct nfs4_exception exception = { }; | |
2886 | int err; | |
2887 | do { | |
2888 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2889 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2890 | &exception); | |
2891 | } while (exception.retry); | |
2892 | return err; | |
2893 | } | |
2894 | ||
1da177e4 | 2895 | /* |
8867fe58 | 2896 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 2897 | */ |
1da177e4 LT |
2898 | static int |
2899 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 2900 | int flags) |
1da177e4 | 2901 | { |
8867fe58 | 2902 | struct nfs_open_context *ctx; |
1da177e4 | 2903 | struct nfs4_state *state; |
1da177e4 LT |
2904 | int status = 0; |
2905 | ||
8867fe58 MS |
2906 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
2907 | if (IS_ERR(ctx)) | |
2908 | return PTR_ERR(ctx); | |
2909 | ||
a8a5da99 | 2910 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
2911 | state = nfs4_do_open(dir, dentry, ctx->mode, |
2912 | flags, sattr, ctx->cred, | |
2913 | &ctx->mdsthreshold); | |
d4d9cdcb | 2914 | d_drop(dentry); |
1da177e4 LT |
2915 | if (IS_ERR(state)) { |
2916 | status = PTR_ERR(state); | |
c0204fd2 | 2917 | goto out; |
1da177e4 | 2918 | } |
d4d9cdcb | 2919 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2920 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 2921 | ctx->state = state; |
1da177e4 | 2922 | out: |
8867fe58 | 2923 | put_nfs_open_context(ctx); |
1da177e4 LT |
2924 | return status; |
2925 | } | |
2926 | ||
2927 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2928 | { | |
16e42959 | 2929 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2930 | struct nfs_removeargs args = { |
1da177e4 | 2931 | .fh = NFS_FH(dir), |
26fe5750 | 2932 | .name = *name, |
16e42959 | 2933 | }; |
4fdc17b2 | 2934 | struct nfs_removeres res = { |
16e42959 | 2935 | .server = server, |
1da177e4 | 2936 | }; |
1da177e4 | 2937 | struct rpc_message msg = { |
4fdc17b2 TM |
2938 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2939 | .rpc_argp = &args, | |
2940 | .rpc_resp = &res, | |
1da177e4 | 2941 | }; |
778d2817 | 2942 | int status; |
1da177e4 | 2943 | |
7c513058 | 2944 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 2945 | if (status == 0) |
16e42959 | 2946 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
2947 | return status; |
2948 | } | |
2949 | ||
2950 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2951 | { | |
2952 | struct nfs4_exception exception = { }; | |
2953 | int err; | |
2954 | do { | |
2955 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2956 | _nfs4_proc_remove(dir, name), | |
2957 | &exception); | |
2958 | } while (exception.retry); | |
2959 | return err; | |
2960 | } | |
2961 | ||
e4eff1a6 | 2962 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2963 | { |
e4eff1a6 TM |
2964 | struct nfs_server *server = NFS_SERVER(dir); |
2965 | struct nfs_removeargs *args = msg->rpc_argp; | |
2966 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2967 | |
e4eff1a6 | 2968 | res->server = server; |
1da177e4 | 2969 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2970 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2971 | } |
2972 | ||
34e137cc BS |
2973 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
2974 | { | |
2975 | if (nfs4_setup_sequence(NFS_SERVER(data->dir), | |
2976 | &data->args.seq_args, | |
2977 | &data->res.seq_res, | |
2978 | task)) | |
2979 | return; | |
2980 | rpc_call_start(task); | |
1da177e4 LT |
2981 | } |
2982 | ||
e4eff1a6 | 2983 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2984 | { |
e4eff1a6 TM |
2985 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2986 | ||
14516c3a TM |
2987 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2988 | return 0; | |
9e33bed5 | 2989 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2990 | return 0; |
2991 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 2992 | return 1; |
1da177e4 LT |
2993 | } |
2994 | ||
d3d4152a JL |
2995 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2996 | { | |
2997 | struct nfs_server *server = NFS_SERVER(dir); | |
2998 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2999 | struct nfs_renameres *res = msg->rpc_resp; | |
3000 | ||
3001 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3002 | res->server = server; |
9d12b216 | 3003 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3004 | } |
3005 | ||
c6bfa1a1 BS |
3006 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3007 | { | |
3008 | if (nfs4_setup_sequence(NFS_SERVER(data->old_dir), | |
3009 | &data->args.seq_args, | |
3010 | &data->res.seq_res, | |
3011 | task)) | |
3012 | return; | |
3013 | rpc_call_start(task); | |
d3d4152a JL |
3014 | } |
3015 | ||
3016 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3017 | struct inode *new_dir) | |
3018 | { | |
3019 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
3020 | ||
3021 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3022 | return 0; | |
3023 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3024 | return 0; | |
3025 | ||
3026 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3027 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3028 | return 1; |
3029 | } | |
3030 | ||
1da177e4 LT |
3031 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3032 | struct inode *new_dir, struct qstr *new_name) | |
3033 | { | |
6caf2c82 | 3034 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3035 | struct nfs_renameargs arg = { |
1da177e4 LT |
3036 | .old_dir = NFS_FH(old_dir), |
3037 | .new_dir = NFS_FH(new_dir), | |
3038 | .old_name = old_name, | |
3039 | .new_name = new_name, | |
6caf2c82 | 3040 | }; |
e8582a8b | 3041 | struct nfs_renameres res = { |
6caf2c82 | 3042 | .server = server, |
1da177e4 | 3043 | }; |
1da177e4 LT |
3044 | struct rpc_message msg = { |
3045 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3046 | .rpc_argp = &arg, | |
3047 | .rpc_resp = &res, | |
3048 | }; | |
011fff72 | 3049 | int status = -ENOMEM; |
1da177e4 | 3050 | |
7c513058 | 3051 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3052 | if (!status) { |
3053 | update_changeattr(old_dir, &res.old_cinfo); | |
3054 | update_changeattr(new_dir, &res.new_cinfo); | |
3055 | } | |
3056 | return status; | |
3057 | } | |
3058 | ||
3059 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3060 | struct inode *new_dir, struct qstr *new_name) | |
3061 | { | |
3062 | struct nfs4_exception exception = { }; | |
3063 | int err; | |
3064 | do { | |
3065 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3066 | _nfs4_proc_rename(old_dir, old_name, | |
3067 | new_dir, new_name), | |
3068 | &exception); | |
3069 | } while (exception.retry); | |
3070 | return err; | |
3071 | } | |
3072 | ||
3073 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3074 | { | |
91ba2eee | 3075 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3076 | struct nfs4_link_arg arg = { |
3077 | .fh = NFS_FH(inode), | |
3078 | .dir_fh = NFS_FH(dir), | |
3079 | .name = name, | |
91ba2eee TM |
3080 | .bitmask = server->attr_bitmask, |
3081 | }; | |
91ba2eee TM |
3082 | struct nfs4_link_res res = { |
3083 | .server = server, | |
1da177e4 | 3084 | }; |
1da177e4 LT |
3085 | struct rpc_message msg = { |
3086 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3087 | .rpc_argp = &arg, | |
91ba2eee | 3088 | .rpc_resp = &res, |
1da177e4 | 3089 | }; |
136f2627 TM |
3090 | int status = -ENOMEM; |
3091 | ||
3092 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3093 | if (res.fattr == NULL) |
136f2627 | 3094 | goto out; |
1da177e4 | 3095 | |
7c513058 | 3096 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3097 | if (!status) { |
3098 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3099 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3100 | } |
136f2627 | 3101 | out: |
136f2627 | 3102 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3103 | return status; |
3104 | } | |
3105 | ||
3106 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3107 | { | |
3108 | struct nfs4_exception exception = { }; | |
3109 | int err; | |
3110 | do { | |
3111 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3112 | _nfs4_proc_link(inode, dir, name), | |
3113 | &exception); | |
3114 | } while (exception.retry); | |
3115 | return err; | |
3116 | } | |
3117 | ||
57dc9a57 TM |
3118 | struct nfs4_createdata { |
3119 | struct rpc_message msg; | |
3120 | struct nfs4_create_arg arg; | |
3121 | struct nfs4_create_res res; | |
3122 | struct nfs_fh fh; | |
3123 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3124 | }; |
3125 | ||
3126 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3127 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3128 | { | |
3129 | struct nfs4_createdata *data; | |
3130 | ||
3131 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3132 | if (data != NULL) { | |
3133 | struct nfs_server *server = NFS_SERVER(dir); | |
3134 | ||
3135 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3136 | data->msg.rpc_argp = &data->arg; | |
3137 | data->msg.rpc_resp = &data->res; | |
3138 | data->arg.dir_fh = NFS_FH(dir); | |
3139 | data->arg.server = server; | |
3140 | data->arg.name = name; | |
3141 | data->arg.attrs = sattr; | |
3142 | data->arg.ftype = ftype; | |
3143 | data->arg.bitmask = server->attr_bitmask; | |
3144 | data->res.server = server; | |
3145 | data->res.fh = &data->fh; | |
3146 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3147 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3148 | } |
3149 | return data; | |
3150 | } | |
3151 | ||
3152 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3153 | { | |
7c513058 | 3154 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3155 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3156 | if (status == 0) { |
3157 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3158 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3159 | } | |
3160 | return status; | |
3161 | } | |
3162 | ||
3163 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3164 | { | |
3165 | kfree(data); | |
3166 | } | |
3167 | ||
4f390c15 | 3168 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3169 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3170 | { |
57dc9a57 TM |
3171 | struct nfs4_createdata *data; |
3172 | int status = -ENAMETOOLONG; | |
1da177e4 | 3173 | |
94a6d753 | 3174 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3175 | goto out; |
4f390c15 | 3176 | |
57dc9a57 TM |
3177 | status = -ENOMEM; |
3178 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3179 | if (data == NULL) | |
3180 | goto out; | |
3181 | ||
3182 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3183 | data->arg.u.symlink.pages = &page; | |
3184 | data->arg.u.symlink.len = len; | |
1da177e4 | 3185 | |
57dc9a57 TM |
3186 | status = nfs4_do_create(dir, dentry, data); |
3187 | ||
3188 | nfs4_free_createdata(data); | |
3189 | out: | |
1da177e4 LT |
3190 | return status; |
3191 | } | |
3192 | ||
4f390c15 | 3193 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3194 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3195 | { |
3196 | struct nfs4_exception exception = { }; | |
3197 | int err; | |
3198 | do { | |
3199 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3200 | _nfs4_proc_symlink(dir, dentry, page, |
3201 | len, sattr), | |
1da177e4 LT |
3202 | &exception); |
3203 | } while (exception.retry); | |
3204 | return err; | |
3205 | } | |
3206 | ||
3207 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3208 | struct iattr *sattr) | |
3209 | { | |
57dc9a57 TM |
3210 | struct nfs4_createdata *data; |
3211 | int status = -ENOMEM; | |
1da177e4 | 3212 | |
57dc9a57 TM |
3213 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3214 | if (data == NULL) | |
3215 | goto out; | |
3216 | ||
3217 | status = nfs4_do_create(dir, dentry, data); | |
3218 | ||
3219 | nfs4_free_createdata(data); | |
3220 | out: | |
1da177e4 LT |
3221 | return status; |
3222 | } | |
3223 | ||
3224 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3225 | struct iattr *sattr) | |
3226 | { | |
3227 | struct nfs4_exception exception = { }; | |
3228 | int err; | |
a8a5da99 AK |
3229 | |
3230 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3231 | do { |
3232 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3233 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3234 | &exception); | |
3235 | } while (exception.retry); | |
3236 | return err; | |
3237 | } | |
3238 | ||
3239 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3240 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3241 | { |
3242 | struct inode *dir = dentry->d_inode; | |
3243 | struct nfs4_readdir_arg args = { | |
3244 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3245 | .pages = pages, |
1da177e4 LT |
3246 | .pgbase = 0, |
3247 | .count = count, | |
96d25e53 | 3248 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3249 | .plus = plus, |
1da177e4 LT |
3250 | }; |
3251 | struct nfs4_readdir_res res; | |
3252 | struct rpc_message msg = { | |
3253 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3254 | .rpc_argp = &args, | |
3255 | .rpc_resp = &res, | |
3256 | .rpc_cred = cred, | |
3257 | }; | |
3258 | int status; | |
3259 | ||
3110ff80 | 3260 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3261 | dentry->d_parent->d_name.name, |
3262 | dentry->d_name.name, | |
3263 | (unsigned long long)cookie); | |
c3f52af3 | 3264 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3265 | res.pgbase = args.pgbase; |
7c513058 | 3266 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3267 | if (status >= 0) { |
c3f52af3 | 3268 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3269 | status += args.pgbase; |
3270 | } | |
c4812998 TM |
3271 | |
3272 | nfs_invalidate_atime(dir); | |
3273 | ||
3110ff80 | 3274 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3275 | return status; |
3276 | } | |
3277 | ||
3278 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3279 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3280 | { |
3281 | struct nfs4_exception exception = { }; | |
3282 | int err; | |
3283 | do { | |
3284 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3285 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3286 | pages, count, plus), |
1da177e4 LT |
3287 | &exception); |
3288 | } while (exception.retry); | |
3289 | return err; | |
3290 | } | |
3291 | ||
3292 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3293 | struct iattr *sattr, dev_t rdev) | |
3294 | { | |
57dc9a57 TM |
3295 | struct nfs4_createdata *data; |
3296 | int mode = sattr->ia_mode; | |
3297 | int status = -ENOMEM; | |
1da177e4 LT |
3298 | |
3299 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3300 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3301 | |
3302 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3303 | if (data == NULL) | |
3304 | goto out; | |
3305 | ||
1da177e4 | 3306 | if (S_ISFIFO(mode)) |
57dc9a57 | 3307 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3308 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3309 | data->arg.ftype = NF4BLK; |
3310 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3311 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3312 | } |
3313 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3314 | data->arg.ftype = NF4CHR; |
3315 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3316 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3317 | } |
1da177e4 | 3318 | |
57dc9a57 TM |
3319 | status = nfs4_do_create(dir, dentry, data); |
3320 | ||
3321 | nfs4_free_createdata(data); | |
3322 | out: | |
1da177e4 LT |
3323 | return status; |
3324 | } | |
3325 | ||
3326 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3327 | struct iattr *sattr, dev_t rdev) | |
3328 | { | |
3329 | struct nfs4_exception exception = { }; | |
3330 | int err; | |
a8a5da99 AK |
3331 | |
3332 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3333 | do { |
3334 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3335 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3336 | &exception); | |
3337 | } while (exception.retry); | |
3338 | return err; | |
3339 | } | |
3340 | ||
3341 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3342 | struct nfs_fsstat *fsstat) | |
3343 | { | |
3344 | struct nfs4_statfs_arg args = { | |
3345 | .fh = fhandle, | |
3346 | .bitmask = server->attr_bitmask, | |
3347 | }; | |
24ad148a BH |
3348 | struct nfs4_statfs_res res = { |
3349 | .fsstat = fsstat, | |
3350 | }; | |
1da177e4 LT |
3351 | struct rpc_message msg = { |
3352 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3353 | .rpc_argp = &args, | |
24ad148a | 3354 | .rpc_resp = &res, |
1da177e4 LT |
3355 | }; |
3356 | ||
0e574af1 | 3357 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3358 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3359 | } |
3360 | ||
3361 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3362 | { | |
3363 | struct nfs4_exception exception = { }; | |
3364 | int err; | |
3365 | do { | |
3366 | err = nfs4_handle_exception(server, | |
3367 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3368 | &exception); | |
3369 | } while (exception.retry); | |
3370 | return err; | |
3371 | } | |
3372 | ||
3373 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3374 | struct nfs_fsinfo *fsinfo) | |
3375 | { | |
3376 | struct nfs4_fsinfo_arg args = { | |
3377 | .fh = fhandle, | |
3378 | .bitmask = server->attr_bitmask, | |
3379 | }; | |
3dda5e43 BH |
3380 | struct nfs4_fsinfo_res res = { |
3381 | .fsinfo = fsinfo, | |
3382 | }; | |
1da177e4 LT |
3383 | struct rpc_message msg = { |
3384 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3385 | .rpc_argp = &args, | |
3dda5e43 | 3386 | .rpc_resp = &res, |
1da177e4 LT |
3387 | }; |
3388 | ||
7c513058 | 3389 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3390 | } |
3391 | ||
3392 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3393 | { | |
3394 | struct nfs4_exception exception = { }; | |
3395 | int err; | |
3396 | ||
3397 | do { | |
3398 | err = nfs4_handle_exception(server, | |
3399 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3400 | &exception); | |
3401 | } while (exception.retry); | |
3402 | return err; | |
3403 | } | |
3404 | ||
3405 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3406 | { | |
e38eb650 BS |
3407 | int error; |
3408 | ||
0e574af1 | 3409 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3410 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3411 | if (error == 0) { |
3412 | /* block layout checks this! */ | |
3413 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3414 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3415 | } |
e38eb650 BS |
3416 | |
3417 | return error; | |
1da177e4 LT |
3418 | } |
3419 | ||
3420 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3421 | struct nfs_pathconf *pathconf) | |
3422 | { | |
3423 | struct nfs4_pathconf_arg args = { | |
3424 | .fh = fhandle, | |
3425 | .bitmask = server->attr_bitmask, | |
3426 | }; | |
d45b2989 BH |
3427 | struct nfs4_pathconf_res res = { |
3428 | .pathconf = pathconf, | |
3429 | }; | |
1da177e4 LT |
3430 | struct rpc_message msg = { |
3431 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3432 | .rpc_argp = &args, | |
d45b2989 | 3433 | .rpc_resp = &res, |
1da177e4 LT |
3434 | }; |
3435 | ||
3436 | /* None of the pathconf attributes are mandatory to implement */ | |
3437 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3438 | memset(pathconf, 0, sizeof(*pathconf)); | |
3439 | return 0; | |
3440 | } | |
3441 | ||
0e574af1 | 3442 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3443 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3444 | } |
3445 | ||
3446 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3447 | struct nfs_pathconf *pathconf) | |
3448 | { | |
3449 | struct nfs4_exception exception = { }; | |
3450 | int err; | |
3451 | ||
3452 | do { | |
3453 | err = nfs4_handle_exception(server, | |
3454 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3455 | &exception); | |
3456 | } while (exception.retry); | |
3457 | return err; | |
3458 | } | |
3459 | ||
d20581aa BH |
3460 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3461 | { | |
cd841605 | 3462 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3463 | } |
3464 | ||
cbdabc7f | 3465 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3466 | { |
cd841605 | 3467 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3468 | |
9e33bed5 | 3469 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3470 | rpc_restart_call_prepare(task); |
ec06c096 | 3471 | return -EAGAIN; |
1da177e4 | 3472 | } |
8850df99 | 3473 | |
d20581aa | 3474 | __nfs4_read_done_cb(data); |
1da177e4 | 3475 | if (task->tk_status > 0) |
ec06c096 TM |
3476 | renew_lease(server, data->timestamp); |
3477 | return 0; | |
1da177e4 LT |
3478 | } |
3479 | ||
cbdabc7f AA |
3480 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3481 | { | |
3482 | ||
3483 | dprintk("--> %s\n", __func__); | |
3484 | ||
3485 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3486 | return -EAGAIN; | |
3487 | ||
d20581aa BH |
3488 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3489 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3490 | } |
3491 | ||
bdc7f021 | 3492 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3493 | { |
1da177e4 | 3494 | data->timestamp = jiffies; |
cbdabc7f | 3495 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3496 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3497 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3498 | } |
3499 | ||
ea7c3303 BS |
3500 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3501 | { | |
cd841605 | 3502 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
ea7c3303 BS |
3503 | &data->args.seq_args, |
3504 | &data->res.seq_res, | |
3505 | task)) | |
3506 | return; | |
3507 | rpc_call_start(task); | |
1da177e4 LT |
3508 | } |
3509 | ||
b029bc9b | 3510 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3511 | { |
cd841605 | 3512 | struct inode *inode = data->header->inode; |
1da177e4 | 3513 | |
9e33bed5 | 3514 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3515 | rpc_restart_call_prepare(task); |
788e7a89 | 3516 | return -EAGAIN; |
1da177e4 | 3517 | } |
4f9838c7 | 3518 | if (task->tk_status >= 0) { |
1da177e4 | 3519 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3520 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3521 | } |
788e7a89 | 3522 | return 0; |
1da177e4 LT |
3523 | } |
3524 | ||
b029bc9b FI |
3525 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3526 | { | |
3527 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3528 | return -EAGAIN; | |
d20581aa BH |
3529 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3530 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3531 | } |
3532 | ||
5a37f851 TM |
3533 | static |
3534 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3535 | { |
5a37f851 TM |
3536 | const struct nfs_pgio_header *hdr = data->header; |
3537 | ||
3538 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3539 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3540 | return false; | |
3541 | /* Otherwise, request attributes if and only if we don't hold | |
3542 | * a delegation | |
3543 | */ | |
011e2a7f | 3544 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3545 | } |
a69aef14 | 3546 | |
bdc7f021 | 3547 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3548 | { |
cd841605 | 3549 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3550 | |
5a37f851 | 3551 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3552 | data->args.bitmask = NULL; |
3553 | data->res.fattr = NULL; | |
3554 | } else | |
3555 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3556 | |
b029bc9b FI |
3557 | if (!data->write_done_cb) |
3558 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3559 | data->res.server = server; |
1da177e4 LT |
3560 | data->timestamp = jiffies; |
3561 | ||
bdc7f021 | 3562 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3563 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3564 | } |
3565 | ||
c6cb80d0 BS |
3566 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3567 | { | |
cd841605 | 3568 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
c6cb80d0 BS |
3569 | &data->args.seq_args, |
3570 | &data->res.seq_res, | |
3571 | task)) | |
3572 | return; | |
3573 | rpc_call_start(task); | |
1da177e4 LT |
3574 | } |
3575 | ||
0b7c0153 | 3576 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 BS |
3577 | { |
3578 | if (nfs4_setup_sequence(NFS_SERVER(data->inode), | |
3579 | &data->args.seq_args, | |
3580 | &data->res.seq_res, | |
3581 | task)) | |
3582 | return; | |
3583 | rpc_call_start(task); | |
1da177e4 LT |
3584 | } |
3585 | ||
0b7c0153 | 3586 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3587 | { |
1da177e4 | 3588 | struct inode *inode = data->inode; |
14516c3a | 3589 | |
9e33bed5 | 3590 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3591 | rpc_restart_call_prepare(task); |
788e7a89 | 3592 | return -EAGAIN; |
1da177e4 | 3593 | } |
788e7a89 | 3594 | return 0; |
1da177e4 LT |
3595 | } |
3596 | ||
0b7c0153 | 3597 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3598 | { |
3599 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3600 | return -EAGAIN; | |
0b7c0153 | 3601 | return data->commit_done_cb(task, data); |
5f452431 FI |
3602 | } |
3603 | ||
0b7c0153 | 3604 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3605 | { |
788e7a89 | 3606 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3607 | |
0b7c0153 FI |
3608 | if (data->commit_done_cb == NULL) |
3609 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3610 | data->res.server = server; |
bdc7f021 | 3611 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3612 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3613 | } |
3614 | ||
9bc4e3ca CL |
3615 | struct nfs4_renewdata { |
3616 | struct nfs_client *client; | |
3617 | unsigned long timestamp; | |
3618 | }; | |
3619 | ||
1da177e4 LT |
3620 | /* |
3621 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3622 | * standalone procedure for queueing an asynchronous RENEW. | |
3623 | */ | |
9bc4e3ca | 3624 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3625 | { |
9bc4e3ca CL |
3626 | struct nfs4_renewdata *data = calldata; |
3627 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3628 | |
0851de06 AB |
3629 | if (atomic_read(&clp->cl_count) > 1) |
3630 | nfs4_schedule_state_renewal(clp); | |
3631 | nfs_put_client(clp); | |
9bc4e3ca | 3632 | kfree(data); |
dc96aef9 AB |
3633 | } |
3634 | ||
9bc4e3ca | 3635 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3636 | { |
9bc4e3ca CL |
3637 | struct nfs4_renewdata *data = calldata; |
3638 | struct nfs_client *clp = data->client; | |
3639 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3640 | |
3641 | if (task->tk_status < 0) { | |
95baa25c | 3642 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3643 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3644 | return; | |
3645 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3646 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3647 | return; |
3648 | } | |
3649 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3650 | } |
452e9352 | 3651 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3652 | } |
3653 | ||
963d8fe5 TM |
3654 | static const struct rpc_call_ops nfs4_renew_ops = { |
3655 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3656 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3657 | }; |
3658 | ||
2f60ea6b | 3659 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3660 | { |
3661 | struct rpc_message msg = { | |
3662 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3663 | .rpc_argp = clp, | |
b4454fe1 | 3664 | .rpc_cred = cred, |
1da177e4 | 3665 | }; |
9bc4e3ca | 3666 | struct nfs4_renewdata *data; |
1da177e4 | 3667 | |
2f60ea6b TM |
3668 | if (renew_flags == 0) |
3669 | return 0; | |
0851de06 AB |
3670 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3671 | return -EIO; | |
b569ad34 | 3672 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3673 | if (data == NULL) |
3674 | return -ENOMEM; | |
3675 | data->client = clp; | |
3676 | data->timestamp = jiffies; | |
1da177e4 | 3677 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3678 | &nfs4_renew_ops, data); |
1da177e4 LT |
3679 | } |
3680 | ||
8534d4ec | 3681 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3682 | { |
3683 | struct rpc_message msg = { | |
3684 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3685 | .rpc_argp = clp, | |
b4454fe1 | 3686 | .rpc_cred = cred, |
1da177e4 LT |
3687 | }; |
3688 | unsigned long now = jiffies; | |
3689 | int status; | |
3690 | ||
3691 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3692 | if (status < 0) | |
3693 | return status; | |
452e9352 | 3694 | do_renew_lease(clp, now); |
1da177e4 LT |
3695 | return 0; |
3696 | } | |
3697 | ||
aa1870af BF |
3698 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3699 | { | |
3700 | return (server->caps & NFS_CAP_ACLS) | |
3701 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3702 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3703 | } | |
3704 | ||
21f498c2 TM |
3705 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3706 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3707 | * the stack. |
3708 | */ | |
21f498c2 | 3709 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3710 | |
e9e3d724 NH |
3711 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3712 | struct page **pages, unsigned int *pgbase) | |
3713 | { | |
3714 | struct page *newpage, **spages; | |
3715 | int rc = 0; | |
3716 | size_t len; | |
3717 | spages = pages; | |
3718 | ||
3719 | do { | |
21f498c2 | 3720 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3721 | newpage = alloc_page(GFP_KERNEL); |
3722 | ||
3723 | if (newpage == NULL) | |
3724 | goto unwind; | |
3725 | memcpy(page_address(newpage), buf, len); | |
3726 | buf += len; | |
3727 | buflen -= len; | |
3728 | *pages++ = newpage; | |
3729 | rc++; | |
3730 | } while (buflen != 0); | |
3731 | ||
3732 | return rc; | |
3733 | ||
3734 | unwind: | |
3735 | for(; rc > 0; rc--) | |
3736 | __free_page(spages[rc-1]); | |
3737 | return -ENOMEM; | |
3738 | } | |
3739 | ||
e50a1c2e BF |
3740 | struct nfs4_cached_acl { |
3741 | int cached; | |
3742 | size_t len; | |
3e9d4154 | 3743 | char data[0]; |
e50a1c2e BF |
3744 | }; |
3745 | ||
3746 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3747 | { | |
3748 | struct nfs_inode *nfsi = NFS_I(inode); | |
3749 | ||
3750 | spin_lock(&inode->i_lock); | |
3751 | kfree(nfsi->nfs4_acl); | |
3752 | nfsi->nfs4_acl = acl; | |
3753 | spin_unlock(&inode->i_lock); | |
3754 | } | |
3755 | ||
3756 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3757 | { | |
3758 | nfs4_set_cached_acl(inode, NULL); | |
3759 | } | |
3760 | ||
3761 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3762 | { | |
3763 | struct nfs_inode *nfsi = NFS_I(inode); | |
3764 | struct nfs4_cached_acl *acl; | |
3765 | int ret = -ENOENT; | |
3766 | ||
3767 | spin_lock(&inode->i_lock); | |
3768 | acl = nfsi->nfs4_acl; | |
3769 | if (acl == NULL) | |
3770 | goto out; | |
3771 | if (buf == NULL) /* user is just asking for length */ | |
3772 | goto out_len; | |
3773 | if (acl->cached == 0) | |
3774 | goto out; | |
3775 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3776 | if (acl->len > buflen) | |
3777 | goto out; | |
3778 | memcpy(buf, acl->data, acl->len); | |
3779 | out_len: | |
3780 | ret = acl->len; | |
3781 | out: | |
3782 | spin_unlock(&inode->i_lock); | |
3783 | return ret; | |
3784 | } | |
3785 | ||
5794d21e | 3786 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3787 | { |
3788 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 3789 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 3790 | |
1f1ea6c2 | 3791 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 3792 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
3793 | if (acl == NULL) |
3794 | goto out; | |
3795 | acl->cached = 1; | |
5794d21e | 3796 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3797 | } else { |
3798 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3799 | if (acl == NULL) | |
3800 | goto out; | |
3801 | acl->cached = 0; | |
3802 | } | |
3803 | acl->len = acl_len; | |
3804 | out: | |
3805 | nfs4_set_cached_acl(inode, acl); | |
3806 | } | |
3807 | ||
bf118a34 AA |
3808 | /* |
3809 | * The getxattr API returns the required buffer length when called with a | |
3810 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3811 | * the required buf. On a NULL buf, we send a page of data to the server | |
3812 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3813 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3814 | * the cache. If not so, we throw away the page, and cache the required | |
3815 | * length. The next getxattr call will then produce another round trip to | |
3816 | * the server, this time with the input buf of the required size. | |
3817 | */ | |
16b4289c | 3818 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3819 | { |
bf118a34 | 3820 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3821 | struct nfs_getaclargs args = { |
3822 | .fh = NFS_FH(inode), | |
3823 | .acl_pages = pages, | |
3824 | .acl_len = buflen, | |
3825 | }; | |
663c79b3 BH |
3826 | struct nfs_getaclres res = { |
3827 | .acl_len = buflen, | |
3828 | }; | |
aa1870af BF |
3829 | struct rpc_message msg = { |
3830 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3831 | .rpc_argp = &args, | |
663c79b3 | 3832 | .rpc_resp = &res, |
aa1870af | 3833 | }; |
21f498c2 TM |
3834 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
3835 | int ret = -ENOMEM, i; | |
aa1870af | 3836 | |
bf118a34 AA |
3837 | /* As long as we're doing a round trip to the server anyway, |
3838 | * let's be prepared for a page of acl data. */ | |
3839 | if (npages == 0) | |
3840 | npages = 1; | |
21f498c2 TM |
3841 | if (npages > ARRAY_SIZE(pages)) |
3842 | return -ERANGE; | |
5a006899 | 3843 | |
bf118a34 AA |
3844 | for (i = 0; i < npages; i++) { |
3845 | pages[i] = alloc_page(GFP_KERNEL); | |
3846 | if (!pages[i]) | |
3847 | goto out_free; | |
e50a1c2e | 3848 | } |
5a006899 SP |
3849 | |
3850 | /* for decoding across pages */ | |
3851 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3852 | if (!res.acl_scratch) | |
3853 | goto out_free; | |
3854 | ||
bf118a34 AA |
3855 | args.acl_len = npages * PAGE_SIZE; |
3856 | args.acl_pgbase = 0; | |
5a006899 | 3857 | |
de040bec | 3858 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3859 | __func__, buf, buflen, npages, args.acl_len); |
3860 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3861 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3862 | if (ret) |
3863 | goto out_free; | |
bf118a34 | 3864 | |
1f1ea6c2 TM |
3865 | /* Handle the case where the passed-in buffer is too short */ |
3866 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
3867 | /* Did the user only issue a request for the acl length? */ | |
3868 | if (buf == NULL) | |
3869 | goto out_ok; | |
e50a1c2e | 3870 | ret = -ERANGE; |
1f1ea6c2 | 3871 | goto out_free; |
e50a1c2e | 3872 | } |
1f1ea6c2 TM |
3873 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
3874 | if (buf) | |
3875 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); | |
3876 | out_ok: | |
3877 | ret = res.acl_len; | |
e50a1c2e | 3878 | out_free: |
bf118a34 AA |
3879 | for (i = 0; i < npages; i++) |
3880 | if (pages[i]) | |
3881 | __free_page(pages[i]); | |
331818f1 TM |
3882 | if (res.acl_scratch) |
3883 | __free_page(res.acl_scratch); | |
aa1870af BF |
3884 | return ret; |
3885 | } | |
3886 | ||
16b4289c TM |
3887 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3888 | { | |
3889 | struct nfs4_exception exception = { }; | |
3890 | ssize_t ret; | |
3891 | do { | |
3892 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3893 | if (ret >= 0) | |
3894 | break; | |
3895 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3896 | } while (exception.retry); | |
3897 | return ret; | |
3898 | } | |
3899 | ||
e50a1c2e BF |
3900 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3901 | { | |
3902 | struct nfs_server *server = NFS_SERVER(inode); | |
3903 | int ret; | |
3904 | ||
3905 | if (!nfs4_server_supports_acls(server)) | |
3906 | return -EOPNOTSUPP; | |
3907 | ret = nfs_revalidate_inode(server, inode); | |
3908 | if (ret < 0) | |
3909 | return ret; | |
08a22b39 AK |
3910 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3911 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3912 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3913 | if (ret != -ENOENT) | |
bf118a34 AA |
3914 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3915 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3916 | return ret; |
3917 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3918 | } | |
3919 | ||
16b4289c | 3920 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3921 | { |
3922 | struct nfs_server *server = NFS_SERVER(inode); | |
3923 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3924 | struct nfs_setaclargs arg = { | |
3925 | .fh = NFS_FH(inode), | |
3926 | .acl_pages = pages, | |
3927 | .acl_len = buflen, | |
3928 | }; | |
73c403a9 | 3929 | struct nfs_setaclres res; |
4b580ee3 BF |
3930 | struct rpc_message msg = { |
3931 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3932 | .rpc_argp = &arg, | |
73c403a9 | 3933 | .rpc_resp = &res, |
4b580ee3 | 3934 | }; |
21f498c2 | 3935 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 3936 | int ret, i; |
4b580ee3 BF |
3937 | |
3938 | if (!nfs4_server_supports_acls(server)) | |
3939 | return -EOPNOTSUPP; | |
21f498c2 TM |
3940 | if (npages > ARRAY_SIZE(pages)) |
3941 | return -ERANGE; | |
e9e3d724 NH |
3942 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3943 | if (i < 0) | |
3944 | return i; | |
57ec14c5 | 3945 | nfs4_inode_return_delegation(inode); |
7c513058 | 3946 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3947 | |
3948 | /* | |
3949 | * Free each page after tx, so the only ref left is | |
3950 | * held by the network stack | |
3951 | */ | |
3952 | for (; i > 0; i--) | |
3953 | put_page(pages[i-1]); | |
3954 | ||
08a22b39 AK |
3955 | /* |
3956 | * Acl update can result in inode attribute update. | |
3957 | * so mark the attribute cache invalid. | |
3958 | */ | |
3959 | spin_lock(&inode->i_lock); | |
3960 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3961 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3962 | nfs_access_zap_cache(inode); |
3963 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3964 | return ret; |
3965 | } | |
3966 | ||
16b4289c TM |
3967 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3968 | { | |
3969 | struct nfs4_exception exception = { }; | |
3970 | int err; | |
3971 | do { | |
3972 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3973 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3974 | &exception); | |
3975 | } while (exception.retry); | |
3976 | return err; | |
3977 | } | |
3978 | ||
1da177e4 | 3979 | static int |
aa5190d0 | 3980 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3981 | { |
aa5190d0 TM |
3982 | struct nfs_client *clp = server->nfs_client; |
3983 | ||
3984 | if (task->tk_status >= 0) | |
1da177e4 LT |
3985 | return 0; |
3986 | switch(task->tk_status) { | |
a1d0b5ee | 3987 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3988 | case -NFS4ERR_ADMIN_REVOKED: |
3989 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
3990 | if (state == NULL) |
3991 | break; | |
3992 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3993 | case -NFS4ERR_OPENMODE: |
3994 | if (state == NULL) | |
3995 | break; | |
0400a6b0 TM |
3996 | nfs4_schedule_stateid_recovery(server, state); |
3997 | goto wait_on_recovery; | |
0ced63d1 TM |
3998 | case -NFS4ERR_EXPIRED: |
3999 | if (state != NULL) | |
4000 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 4001 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4002 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4003 | nfs4_schedule_lease_recovery(clp); |
4004 | goto wait_on_recovery; | |
4745e315 AA |
4005 | #if defined(CONFIG_NFS_V4_1) |
4006 | case -NFS4ERR_BADSESSION: | |
4007 | case -NFS4ERR_BADSLOT: | |
4008 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4009 | case -NFS4ERR_DEADSESSION: | |
4010 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4011 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4012 | case -NFS4ERR_SEQ_MISORDERED: | |
4013 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4014 | task->tk_status); | |
9f594791 | 4015 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4016 | task->tk_status = 0; |
4017 | return -EAGAIN; | |
4018 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4019 | case -NFS4ERR_DELAY: |
aa5190d0 | 4020 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4021 | case -NFS4ERR_GRACE: |
2c643488 | 4022 | case -EKEYEXPIRED: |
1da177e4 LT |
4023 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4024 | task->tk_status = 0; | |
4025 | return -EAGAIN; | |
a8a4ae3a | 4026 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4027 | case -NFS4ERR_OLD_STATEID: |
4028 | task->tk_status = 0; | |
4029 | return -EAGAIN; | |
4030 | } | |
4031 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4032 | return 0; | |
0400a6b0 | 4033 | wait_on_recovery: |
a2c0b9e2 | 4034 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4035 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4036 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4037 | task->tk_status = 0; | |
4038 | return -EAGAIN; | |
1da177e4 LT |
4039 | } |
4040 | ||
f092075d CL |
4041 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4042 | nfs4_verifier *bootverf) | |
cd93710e CL |
4043 | { |
4044 | __be32 verf[2]; | |
4045 | ||
2c820d9a CL |
4046 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4047 | /* An impossible timestamp guarantees this value | |
4048 | * will never match a generated boot time. */ | |
4049 | verf[0] = 0; | |
4050 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
4051 | } else { | |
f092075d CL |
4052 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
4053 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
4054 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4055 | } |
cd93710e CL |
4056 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4057 | } | |
4058 | ||
e984a55a CL |
4059 | static unsigned int |
4060 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4061 | char *buf, size_t len) | |
4062 | { | |
4063 | unsigned int result; | |
4064 | ||
4065 | rcu_read_lock(); | |
4066 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4067 | clp->cl_ipaddr, | |
4068 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4069 | RPC_DISPLAY_ADDR), | |
4070 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4071 | RPC_DISPLAY_PROTO)); | |
4072 | rcu_read_unlock(); | |
4073 | return result; | |
4074 | } | |
4075 | ||
4076 | static unsigned int | |
4077 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4078 | char *buf, size_t len) | |
4079 | { | |
6f2ea7f2 CL |
4080 | char *nodename = clp->cl_rpcclient->cl_nodename; |
4081 | ||
4082 | if (nfs4_client_id_uniquifier[0] != '\0') | |
4083 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4084 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4085 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4086 | nodename); |
e984a55a CL |
4087 | } |
4088 | ||
6bbb4ae8 CL |
4089 | /** |
4090 | * nfs4_proc_setclientid - Negotiate client ID | |
4091 | * @clp: state data structure | |
4092 | * @program: RPC program for NFSv4 callback service | |
4093 | * @port: IP port number for NFS4 callback service | |
4094 | * @cred: RPC credential to use for this call | |
4095 | * @res: where to place the result | |
4096 | * | |
4097 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4098 | */ | |
bb8b27e5 TM |
4099 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4100 | unsigned short port, struct rpc_cred *cred, | |
4101 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4102 | { |
4103 | nfs4_verifier sc_verifier; | |
4104 | struct nfs4_setclientid setclientid = { | |
4105 | .sc_verifier = &sc_verifier, | |
4106 | .sc_prog = program, | |
f4eecd5d | 4107 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4108 | }; |
4109 | struct rpc_message msg = { | |
4110 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4111 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4112 | .rpc_resp = res, |
286d7d6a | 4113 | .rpc_cred = cred, |
1da177e4 | 4114 | }; |
6bbb4ae8 | 4115 | int status; |
1da177e4 | 4116 | |
de734831 | 4117 | /* nfs_client_id4 */ |
f092075d | 4118 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4119 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4120 | setclientid.sc_name_len = | |
4121 | nfs4_init_uniform_client_string(clp, | |
4122 | setclientid.sc_name, | |
4123 | sizeof(setclientid.sc_name)); | |
4124 | else | |
4125 | setclientid.sc_name_len = | |
4126 | nfs4_init_nonuniform_client_string(clp, | |
4127 | setclientid.sc_name, | |
4128 | sizeof(setclientid.sc_name)); | |
de734831 | 4129 | /* cb_client4 */ |
e984a55a | 4130 | rcu_read_lock(); |
de734831 | 4131 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4132 | sizeof(setclientid.sc_netid), |
4133 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4134 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4135 | rcu_read_unlock(); |
4136 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4137 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4138 | clp->cl_ipaddr, port >> 8, port & 255); |
4139 | ||
6bbb4ae8 CL |
4140 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4141 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4142 | setclientid.sc_name_len, setclientid.sc_name); | |
4143 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4144 | dprintk("NFS reply setclientid: %d\n", status); | |
4145 | return status; | |
1da177e4 LT |
4146 | } |
4147 | ||
6bbb4ae8 CL |
4148 | /** |
4149 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4150 | * @clp: state data structure | |
4151 | * @res: result of a previous SETCLIENTID | |
4152 | * @cred: RPC credential to use for this call | |
4153 | * | |
4154 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4155 | */ | |
fd954ae1 | 4156 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4157 | struct nfs4_setclientid_res *arg, |
4158 | struct rpc_cred *cred) | |
1da177e4 LT |
4159 | { |
4160 | struct nfs_fsinfo fsinfo; | |
4161 | struct rpc_message msg = { | |
4162 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4163 | .rpc_argp = arg, |
1da177e4 | 4164 | .rpc_resp = &fsinfo, |
286d7d6a | 4165 | .rpc_cred = cred, |
1da177e4 LT |
4166 | }; |
4167 | unsigned long now; | |
4168 | int status; | |
4169 | ||
6bbb4ae8 CL |
4170 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4171 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4172 | clp->cl_clientid); | |
1da177e4 | 4173 | now = jiffies; |
1bd714f2 | 4174 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4175 | if (status == 0) { |
4176 | spin_lock(&clp->cl_lock); | |
4177 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4178 | clp->cl_last_renewal = now; | |
4179 | spin_unlock(&clp->cl_lock); | |
4180 | } | |
6bbb4ae8 | 4181 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4182 | return status; |
4183 | } | |
4184 | ||
fe650407 TM |
4185 | struct nfs4_delegreturndata { |
4186 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4187 | struct nfs4_delegreturnres res; |
fe650407 TM |
4188 | struct nfs_fh fh; |
4189 | nfs4_stateid stateid; | |
26e976a8 | 4190 | unsigned long timestamp; |
fa178f29 | 4191 | struct nfs_fattr fattr; |
fe650407 TM |
4192 | int rpc_status; |
4193 | }; | |
4194 | ||
fe650407 TM |
4195 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4196 | { | |
4197 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4198 | |
14516c3a TM |
4199 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4200 | return; | |
938e1010 | 4201 | |
79708861 RL |
4202 | switch (task->tk_status) { |
4203 | case -NFS4ERR_STALE_STATEID: | |
4204 | case -NFS4ERR_EXPIRED: | |
4205 | case 0: | |
fa178f29 | 4206 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4207 | break; |
4208 | default: | |
4209 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4210 | -EAGAIN) { | |
d00c5d43 | 4211 | rpc_restart_call_prepare(task); |
79708861 RL |
4212 | return; |
4213 | } | |
4214 | } | |
4215 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4216 | } |
4217 | ||
4218 | static void nfs4_delegreturn_release(void *calldata) | |
4219 | { | |
fe650407 TM |
4220 | kfree(calldata); |
4221 | } | |
4222 | ||
938e1010 AA |
4223 | #if defined(CONFIG_NFS_V4_1) |
4224 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4225 | { | |
4226 | struct nfs4_delegreturndata *d_data; | |
4227 | ||
4228 | d_data = (struct nfs4_delegreturndata *)data; | |
4229 | ||
035168ab | 4230 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 4231 | &d_data->args.seq_args, |
9d12b216 | 4232 | &d_data->res.seq_res, task)) |
938e1010 AA |
4233 | return; |
4234 | rpc_call_start(task); | |
4235 | } | |
4236 | #endif /* CONFIG_NFS_V4_1 */ | |
4237 | ||
c8d149f3 | 4238 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4239 | #if defined(CONFIG_NFS_V4_1) |
4240 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4241 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4242 | .rpc_call_done = nfs4_delegreturn_done, |
4243 | .rpc_release = nfs4_delegreturn_release, | |
4244 | }; | |
4245 | ||
e6f81075 | 4246 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4247 | { |
4248 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4249 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4250 | struct rpc_task *task; |
5138fde0 TM |
4251 | struct rpc_message msg = { |
4252 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4253 | .rpc_cred = cred, | |
4254 | }; | |
c970aa85 TM |
4255 | struct rpc_task_setup task_setup_data = { |
4256 | .rpc_client = server->client, | |
5138fde0 | 4257 | .rpc_message = &msg, |
c970aa85 TM |
4258 | .callback_ops = &nfs4_delegreturn_ops, |
4259 | .flags = RPC_TASK_ASYNC, | |
4260 | }; | |
e6f81075 | 4261 | int status = 0; |
fe650407 | 4262 | |
8535b2be | 4263 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4264 | if (data == NULL) |
4265 | return -ENOMEM; | |
9d12b216 | 4266 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4267 | data->args.fhandle = &data->fh; |
4268 | data->args.stateid = &data->stateid; | |
9e907fec | 4269 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4270 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4271 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4272 | data->res.fattr = &data->fattr; |
4273 | data->res.server = server; | |
5138fde0 | 4274 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4275 | data->timestamp = jiffies; |
fe650407 TM |
4276 | data->rpc_status = 0; |
4277 | ||
c970aa85 | 4278 | task_setup_data.callback_data = data; |
1174dd1f TM |
4279 | msg.rpc_argp = &data->args; |
4280 | msg.rpc_resp = &data->res; | |
c970aa85 | 4281 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4282 | if (IS_ERR(task)) |
fe650407 | 4283 | return PTR_ERR(task); |
e6f81075 TM |
4284 | if (!issync) |
4285 | goto out; | |
fe650407 | 4286 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4287 | if (status != 0) |
4288 | goto out; | |
4289 | status = data->rpc_status; | |
e144cbcc TM |
4290 | if (status == 0) |
4291 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4292 | else | |
4293 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4294 | out: |
e6b3c4db | 4295 | rpc_put_task(task); |
fe650407 | 4296 | return status; |
1da177e4 LT |
4297 | } |
4298 | ||
e6f81075 | 4299 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4300 | { |
4301 | struct nfs_server *server = NFS_SERVER(inode); | |
4302 | struct nfs4_exception exception = { }; | |
4303 | int err; | |
4304 | do { | |
e6f81075 | 4305 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4306 | switch (err) { |
4307 | case -NFS4ERR_STALE_STATEID: | |
4308 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4309 | case 0: |
4310 | return 0; | |
4311 | } | |
4312 | err = nfs4_handle_exception(server, err, &exception); | |
4313 | } while (exception.retry); | |
4314 | return err; | |
4315 | } | |
4316 | ||
4317 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4318 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4319 | ||
4320 | /* | |
4321 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4322 | */ | |
4323 | static unsigned long | |
4324 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4325 | { | |
d310310c | 4326 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4327 | timeout <<= 1; |
4328 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4329 | return NFS4_LOCK_MAXTIMEOUT; | |
4330 | return timeout; | |
4331 | } | |
4332 | ||
1da177e4 LT |
4333 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4334 | { | |
4335 | struct inode *inode = state->inode; | |
4336 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4337 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4338 | struct nfs_lockt_args arg = { |
1da177e4 | 4339 | .fh = NFS_FH(inode), |
911d1aaf | 4340 | .fl = request, |
1da177e4 | 4341 | }; |
911d1aaf TM |
4342 | struct nfs_lockt_res res = { |
4343 | .denied = request, | |
1da177e4 LT |
4344 | }; |
4345 | struct rpc_message msg = { | |
4346 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4347 | .rpc_argp = &arg, | |
4348 | .rpc_resp = &res, | |
4349 | .rpc_cred = state->owner->so_cred, | |
4350 | }; | |
1da177e4 LT |
4351 | struct nfs4_lock_state *lsp; |
4352 | int status; | |
4353 | ||
911d1aaf | 4354 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4355 | status = nfs4_set_lock_state(state, request); |
4356 | if (status != 0) | |
4357 | goto out; | |
4358 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4359 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4360 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4361 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4362 | switch (status) { |
4363 | case 0: | |
4364 | request->fl_type = F_UNLCK; | |
4365 | break; | |
4366 | case -NFS4ERR_DENIED: | |
4367 | status = 0; | |
1da177e4 | 4368 | } |
70cc6487 | 4369 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4370 | out: |
1da177e4 LT |
4371 | return status; |
4372 | } | |
4373 | ||
4374 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4375 | { | |
4376 | struct nfs4_exception exception = { }; | |
4377 | int err; | |
4378 | ||
4379 | do { | |
4380 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4381 | _nfs4_proc_getlk(state, cmd, request), | |
4382 | &exception); | |
4383 | } while (exception.retry); | |
4384 | return err; | |
4385 | } | |
4386 | ||
4387 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4388 | { | |
4389 | int res = 0; | |
4390 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4391 | case FL_POSIX: | |
4392 | res = posix_lock_file_wait(file, fl); | |
4393 | break; | |
4394 | case FL_FLOCK: | |
4395 | res = flock_lock_file_wait(file, fl); | |
4396 | break; | |
4397 | default: | |
4398 | BUG(); | |
4399 | } | |
1da177e4 LT |
4400 | return res; |
4401 | } | |
4402 | ||
faf5f49c | 4403 | struct nfs4_unlockdata { |
911d1aaf TM |
4404 | struct nfs_locku_args arg; |
4405 | struct nfs_locku_res res; | |
faf5f49c TM |
4406 | struct nfs4_lock_state *lsp; |
4407 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4408 | struct file_lock fl; |
4409 | const struct nfs_server *server; | |
26e976a8 | 4410 | unsigned long timestamp; |
faf5f49c TM |
4411 | }; |
4412 | ||
911d1aaf TM |
4413 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4414 | struct nfs_open_context *ctx, | |
4415 | struct nfs4_lock_state *lsp, | |
4416 | struct nfs_seqid *seqid) | |
4417 | { | |
4418 | struct nfs4_unlockdata *p; | |
4419 | struct inode *inode = lsp->ls_state->inode; | |
4420 | ||
8535b2be | 4421 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4422 | if (p == NULL) |
4423 | return NULL; | |
4424 | p->arg.fh = NFS_FH(inode); | |
4425 | p->arg.fl = &p->fl; | |
4426 | p->arg.seqid = seqid; | |
c1d51931 | 4427 | p->res.seqid = seqid; |
911d1aaf TM |
4428 | p->arg.stateid = &lsp->ls_stateid; |
4429 | p->lsp = lsp; | |
4430 | atomic_inc(&lsp->ls_count); | |
4431 | /* Ensure we don't close file until we're done freeing locks! */ | |
4432 | p->ctx = get_nfs_open_context(ctx); | |
4433 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4434 | p->server = NFS_SERVER(inode); | |
4435 | return p; | |
4436 | } | |
4437 | ||
06f814a3 | 4438 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4439 | { |
963d8fe5 | 4440 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4441 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4442 | nfs4_put_lock_state(calldata->lsp); |
4443 | put_nfs_open_context(calldata->ctx); | |
4444 | kfree(calldata); | |
faf5f49c TM |
4445 | } |
4446 | ||
963d8fe5 | 4447 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4448 | { |
963d8fe5 | 4449 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4450 | |
14516c3a TM |
4451 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4452 | return; | |
faf5f49c TM |
4453 | switch (task->tk_status) { |
4454 | case 0: | |
f597c537 TM |
4455 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4456 | &calldata->res.stateid); | |
26e976a8 | 4457 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4458 | break; |
9e33bed5 TM |
4459 | case -NFS4ERR_BAD_STATEID: |
4460 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4461 | case -NFS4ERR_STALE_STATEID: |
4462 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4463 | break; |
4464 | default: | |
9e33bed5 | 4465 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4466 | rpc_restart_call_prepare(task); |
faf5f49c | 4467 | } |
faf5f49c TM |
4468 | } |
4469 | ||
4ce70ada | 4470 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4471 | { |
4ce70ada | 4472 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4473 | |
911d1aaf | 4474 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c | 4475 | return; |
795a88c9 | 4476 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 TM |
4477 | /* Note: exit _without_ running nfs4_locku_done */ |
4478 | task->tk_action = NULL; | |
faf5f49c TM |
4479 | return; |
4480 | } | |
26e976a8 | 4481 | calldata->timestamp = jiffies; |
035168ab | 4482 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4483 | &calldata->arg.seq_args, |
9d12b216 | 4484 | &calldata->res.seq_res, task)) |
a893693c | 4485 | return; |
5138fde0 | 4486 | rpc_call_start(task); |
faf5f49c TM |
4487 | } |
4488 | ||
963d8fe5 | 4489 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4490 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4491 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4492 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4493 | }; |
4494 | ||
a5d16a4d TM |
4495 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4496 | struct nfs_open_context *ctx, | |
4497 | struct nfs4_lock_state *lsp, | |
4498 | struct nfs_seqid *seqid) | |
4499 | { | |
4500 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4501 | struct rpc_message msg = { |
4502 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4503 | .rpc_cred = ctx->cred, | |
4504 | }; | |
c970aa85 TM |
4505 | struct rpc_task_setup task_setup_data = { |
4506 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4507 | .rpc_message = &msg, |
c970aa85 | 4508 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4509 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4510 | .flags = RPC_TASK_ASYNC, |
4511 | }; | |
a5d16a4d | 4512 | |
137d6aca FF |
4513 | /* Ensure this is an unlock - when canceling a lock, the |
4514 | * canceled lock is passed in, and it won't be an unlock. | |
4515 | */ | |
4516 | fl->fl_type = F_UNLCK; | |
4517 | ||
a5d16a4d TM |
4518 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4519 | if (data == NULL) { | |
4520 | nfs_free_seqid(seqid); | |
4521 | return ERR_PTR(-ENOMEM); | |
4522 | } | |
4523 | ||
9d12b216 | 4524 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4525 | msg.rpc_argp = &data->arg; |
4526 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4527 | task_setup_data.callback_data = data; |
4528 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4529 | } |
4530 | ||
faf5f49c TM |
4531 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4532 | { | |
19e03c57 | 4533 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4534 | struct nfs_seqid *seqid; |
1da177e4 | 4535 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4536 | struct rpc_task *task; |
4537 | int status = 0; | |
536ff0f8 | 4538 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4539 | |
8d0a8a9d | 4540 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4541 | /* Unlock _before_ we do the RPC call */ |
4542 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4543 | down_read(&nfsi->rwsem); |
4544 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4545 | up_read(&nfsi->rwsem); | |
9b073574 | 4546 | goto out; |
19e03c57 TM |
4547 | } |
4548 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4549 | if (status != 0) |
9b073574 TM |
4550 | goto out; |
4551 | /* Is this a delegated lock? */ | |
4552 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4553 | goto out; | |
8d0a8a9d | 4554 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4555 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4556 | status = -ENOMEM; |
911d1aaf | 4557 | if (seqid == NULL) |
9b073574 | 4558 | goto out; |
cd3758e3 | 4559 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4560 | status = PTR_ERR(task); |
4561 | if (IS_ERR(task)) | |
9b073574 | 4562 | goto out; |
a5d16a4d | 4563 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4564 | rpc_put_task(task); |
9b073574 | 4565 | out: |
536ff0f8 | 4566 | request->fl_flags = fl_flags; |
1da177e4 LT |
4567 | return status; |
4568 | } | |
4569 | ||
a5d16a4d TM |
4570 | struct nfs4_lockdata { |
4571 | struct nfs_lock_args arg; | |
4572 | struct nfs_lock_res res; | |
4573 | struct nfs4_lock_state *lsp; | |
4574 | struct nfs_open_context *ctx; | |
4575 | struct file_lock fl; | |
26e976a8 | 4576 | unsigned long timestamp; |
a5d16a4d TM |
4577 | int rpc_status; |
4578 | int cancelled; | |
66179efe | 4579 | struct nfs_server *server; |
a5d16a4d TM |
4580 | }; |
4581 | ||
4582 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4583 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4584 | gfp_t gfp_mask) | |
1da177e4 | 4585 | { |
a5d16a4d TM |
4586 | struct nfs4_lockdata *p; |
4587 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4588 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4589 | |
8535b2be | 4590 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4591 | if (p == NULL) |
4592 | return NULL; | |
4593 | ||
4594 | p->arg.fh = NFS_FH(inode); | |
4595 | p->arg.fl = &p->fl; | |
8535b2be | 4596 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4597 | if (p->arg.open_seqid == NULL) |
4598 | goto out_free; | |
8535b2be | 4599 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4600 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4601 | goto out_free_seqid; |
a5d16a4d | 4602 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4603 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4604 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4605 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4606 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4607 | p->lsp = lsp; |
66179efe | 4608 | p->server = server; |
a5d16a4d TM |
4609 | atomic_inc(&lsp->ls_count); |
4610 | p->ctx = get_nfs_open_context(ctx); | |
4611 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4612 | return p; | |
2f74c0a0 TM |
4613 | out_free_seqid: |
4614 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4615 | out_free: |
4616 | kfree(p); | |
4617 | return NULL; | |
4618 | } | |
4619 | ||
4620 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4621 | { | |
4622 | struct nfs4_lockdata *data = calldata; | |
4623 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4624 | |
3110ff80 | 4625 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4626 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4627 | return; | |
a5d16a4d TM |
4628 | /* Do we need to do an open_to_lock_owner? */ |
4629 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4630 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4631 | return; | |
a5d16a4d TM |
4632 | data->arg.open_stateid = &state->stateid; |
4633 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4634 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4635 | } else |
4636 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4637 | data->timestamp = jiffies; |
035168ab TM |
4638 | if (nfs4_setup_sequence(data->server, |
4639 | &data->arg.seq_args, | |
9d12b216 | 4640 | &data->res.seq_res, task)) |
66179efe | 4641 | return; |
5138fde0 | 4642 | rpc_call_start(task); |
3110ff80 | 4643 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4644 | } |
4645 | ||
b257957e AB |
4646 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4647 | { | |
4648 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4649 | nfs4_lock_prepare(task, calldata); | |
4650 | } | |
4651 | ||
a5d16a4d TM |
4652 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4653 | { | |
4654 | struct nfs4_lockdata *data = calldata; | |
4655 | ||
3110ff80 | 4656 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4657 | |
14516c3a TM |
4658 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4659 | return; | |
66179efe | 4660 | |
a5d16a4d | 4661 | data->rpc_status = task->tk_status; |
a5d16a4d | 4662 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4663 | if (data->rpc_status == 0) |
4664 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4665 | else | |
4666 | goto out; | |
4667 | } | |
4668 | if (data->rpc_status == 0) { | |
f597c537 | 4669 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4670 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4671 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4672 | } |
a5d16a4d | 4673 | out: |
3110ff80 | 4674 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4675 | } |
4676 | ||
4677 | static void nfs4_lock_release(void *calldata) | |
4678 | { | |
4679 | struct nfs4_lockdata *data = calldata; | |
4680 | ||
3110ff80 | 4681 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4682 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4683 | if (data->cancelled != 0) { |
4684 | struct rpc_task *task; | |
4685 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4686 | data->arg.lock_seqid); | |
4687 | if (!IS_ERR(task)) | |
bf294b41 | 4688 | rpc_put_task_async(task); |
3110ff80 | 4689 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4690 | } else |
4691 | nfs_free_seqid(data->arg.lock_seqid); | |
4692 | nfs4_put_lock_state(data->lsp); | |
4693 | put_nfs_open_context(data->ctx); | |
4694 | kfree(data); | |
3110ff80 | 4695 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4696 | } |
4697 | ||
4698 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4699 | .rpc_call_prepare = nfs4_lock_prepare, | |
4700 | .rpc_call_done = nfs4_lock_done, | |
4701 | .rpc_release = nfs4_lock_release, | |
4702 | }; | |
4703 | ||
b257957e AB |
4704 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4705 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4706 | .rpc_call_done = nfs4_lock_done, | |
4707 | .rpc_release = nfs4_lock_release, | |
4708 | }; | |
4709 | ||
2bee72a6 TM |
4710 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4711 | { | |
2bee72a6 TM |
4712 | switch (error) { |
4713 | case -NFS4ERR_ADMIN_REVOKED: | |
4714 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4715 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4716 | if (new_lock_owner != 0 || |
795a88c9 | 4717 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4718 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4719 | break; |
4720 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4721 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4722 | case -NFS4ERR_EXPIRED: |
4723 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4724 | }; |
4725 | } | |
4726 | ||
afe6c27c | 4727 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4728 | { |
4729 | struct nfs4_lockdata *data; | |
4730 | struct rpc_task *task; | |
5138fde0 TM |
4731 | struct rpc_message msg = { |
4732 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4733 | .rpc_cred = state->owner->so_cred, | |
4734 | }; | |
c970aa85 TM |
4735 | struct rpc_task_setup task_setup_data = { |
4736 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4737 | .rpc_message = &msg, |
c970aa85 | 4738 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4739 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4740 | .flags = RPC_TASK_ASYNC, |
4741 | }; | |
a5d16a4d TM |
4742 | int ret; |
4743 | ||
3110ff80 | 4744 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4745 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4746 | fl->fl_u.nfs4_fl.owner, |
4747 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4748 | if (data == NULL) |
4749 | return -ENOMEM; | |
4750 | if (IS_SETLKW(cmd)) | |
4751 | data->arg.block = 1; | |
b257957e AB |
4752 | if (recovery_type > NFS_LOCK_NEW) { |
4753 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4754 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4755 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4756 | } | |
9d12b216 | 4757 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4758 | msg.rpc_argp = &data->arg; |
4759 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4760 | task_setup_data.callback_data = data; |
4761 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4762 | if (IS_ERR(task)) |
a5d16a4d | 4763 | return PTR_ERR(task); |
a5d16a4d TM |
4764 | ret = nfs4_wait_for_completion_rpc_task(task); |
4765 | if (ret == 0) { | |
4766 | ret = data->rpc_status; | |
2bee72a6 TM |
4767 | if (ret) |
4768 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4769 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4770 | } else |
4771 | data->cancelled = 1; | |
e6b3c4db | 4772 | rpc_put_task(task); |
3110ff80 | 4773 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4774 | return ret; |
1da177e4 LT |
4775 | } |
4776 | ||
4777 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4778 | { | |
202b50dc | 4779 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4780 | struct nfs4_exception exception = { |
4781 | .inode = state->inode, | |
4782 | }; | |
202b50dc TM |
4783 | int err; |
4784 | ||
4785 | do { | |
42a2d13e TM |
4786 | /* Cache the lock if possible... */ |
4787 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4788 | return 0; | |
afe6c27c | 4789 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4790 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4791 | break; |
4792 | nfs4_handle_exception(server, err, &exception); | |
4793 | } while (exception.retry); | |
4794 | return err; | |
1da177e4 LT |
4795 | } |
4796 | ||
4797 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4798 | { | |
202b50dc | 4799 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4800 | struct nfs4_exception exception = { |
4801 | .inode = state->inode, | |
4802 | }; | |
202b50dc TM |
4803 | int err; |
4804 | ||
6bfc93ef TM |
4805 | err = nfs4_set_lock_state(state, request); |
4806 | if (err != 0) | |
4807 | return err; | |
202b50dc | 4808 | do { |
42a2d13e TM |
4809 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4810 | return 0; | |
afe6c27c | 4811 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4812 | switch (err) { |
4813 | default: | |
4814 | goto out; | |
4815 | case -NFS4ERR_GRACE: | |
4816 | case -NFS4ERR_DELAY: | |
4817 | nfs4_handle_exception(server, err, &exception); | |
4818 | err = 0; | |
4819 | } | |
202b50dc | 4820 | } while (exception.retry); |
a9ed2e25 | 4821 | out: |
202b50dc | 4822 | return err; |
1da177e4 LT |
4823 | } |
4824 | ||
f062eb6c | 4825 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
4826 | /** |
4827 | * nfs41_check_expired_locks - possibly free a lock stateid | |
4828 | * | |
4829 | * @state: NFSv4 state for an inode | |
4830 | * | |
4831 | * Returns NFS_OK if recovery for this stateid is now finished. | |
4832 | * Otherwise a negative NFS4ERR value is returned. | |
4833 | */ | |
b01dd1d8 | 4834 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4835 | { |
eb64cf96 | 4836 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 4837 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
4838 | struct nfs_server *server = NFS_SERVER(state->inode); |
4839 | ||
b01dd1d8 | 4840 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 4841 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
b01dd1d8 BS |
4842 | status = nfs41_test_stateid(server, &lsp->ls_stateid); |
4843 | if (status != NFS_OK) { | |
3e60ffdd CL |
4844 | /* Free the stateid unless the server |
4845 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
4846 | if (status != -NFS4ERR_BAD_STATEID) |
4847 | nfs41_free_stateid(server, | |
4848 | &lsp->ls_stateid); | |
795a88c9 | 4849 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
4850 | ret = status; |
4851 | } | |
4852 | } | |
4853 | }; | |
4854 | ||
4855 | return ret; | |
4856 | } | |
4857 | ||
4858 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4859 | { | |
4860 | int status = NFS_OK; | |
4861 | ||
4862 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4863 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
4864 | if (status != NFS_OK) |
4865 | status = nfs4_lock_expired(state, request); | |
4866 | return status; | |
f062eb6c BS |
4867 | } |
4868 | #endif | |
4869 | ||
1da177e4 LT |
4870 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4871 | { | |
19e03c57 | 4872 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4873 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4874 | int status = -ENOLCK; |
1da177e4 | 4875 | |
8e469ebd TM |
4876 | if ((fl_flags & FL_POSIX) && |
4877 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4878 | goto out; | |
6bfc93ef | 4879 | /* Is this a delegated open? */ |
6bfc93ef TM |
4880 | status = nfs4_set_lock_state(state, request); |
4881 | if (status != 0) | |
4882 | goto out; | |
01c3b861 TM |
4883 | request->fl_flags |= FL_ACCESS; |
4884 | status = do_vfs_lock(request->fl_file, request); | |
4885 | if (status < 0) | |
4886 | goto out; | |
19e03c57 | 4887 | down_read(&nfsi->rwsem); |
01c3b861 | 4888 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4889 | /* Yes: cache locks! */ |
01c3b861 | 4890 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4891 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4892 | status = do_vfs_lock(request->fl_file, request); | |
4893 | goto out_unlock; | |
01c3b861 | 4894 | } |
afe6c27c | 4895 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4896 | if (status != 0) |
01c3b861 | 4897 | goto out_unlock; |
6bfc93ef | 4898 | /* Note: we always want to sleep here! */ |
01c3b861 | 4899 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4900 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4901 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4902 | "manager!\n", __func__); | |
01c3b861 | 4903 | out_unlock: |
19e03c57 | 4904 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4905 | out: |
4906 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4907 | return status; |
4908 | } | |
4909 | ||
4910 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4911 | { | |
a1d0b5ee TM |
4912 | struct nfs4_exception exception = { |
4913 | .state = state, | |
05ffe24f | 4914 | .inode = state->inode, |
a1d0b5ee | 4915 | }; |
1da177e4 LT |
4916 | int err; |
4917 | ||
4918 | do { | |
965b5d67 TM |
4919 | err = _nfs4_proc_setlk(state, cmd, request); |
4920 | if (err == -NFS4ERR_DENIED) | |
4921 | err = -EAGAIN; | |
1da177e4 | 4922 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4923 | err, &exception); |
1da177e4 LT |
4924 | } while (exception.retry); |
4925 | return err; | |
4926 | } | |
4927 | ||
4928 | static int | |
4929 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4930 | { | |
4931 | struct nfs_open_context *ctx; | |
4932 | struct nfs4_state *state; | |
4933 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4934 | int status; | |
4935 | ||
4936 | /* verify open state */ | |
cd3758e3 | 4937 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4938 | state = ctx->state; |
4939 | ||
4940 | if (request->fl_start < 0 || request->fl_end < 0) | |
4941 | return -EINVAL; | |
4942 | ||
d953126a TM |
4943 | if (IS_GETLK(cmd)) { |
4944 | if (state != NULL) | |
4945 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4946 | return 0; | |
4947 | } | |
1da177e4 LT |
4948 | |
4949 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4950 | return -EINVAL; | |
4951 | ||
d953126a TM |
4952 | if (request->fl_type == F_UNLCK) { |
4953 | if (state != NULL) | |
4954 | return nfs4_proc_unlck(state, cmd, request); | |
4955 | return 0; | |
4956 | } | |
1da177e4 | 4957 | |
d953126a TM |
4958 | if (state == NULL) |
4959 | return -ENOLCK; | |
55725513 TM |
4960 | /* |
4961 | * Don't rely on the VFS having checked the file open mode, | |
4962 | * since it won't do this for flock() locks. | |
4963 | */ | |
f44106e2 | 4964 | switch (request->fl_type) { |
55725513 TM |
4965 | case F_RDLCK: |
4966 | if (!(filp->f_mode & FMODE_READ)) | |
4967 | return -EBADF; | |
4968 | break; | |
4969 | case F_WRLCK: | |
4970 | if (!(filp->f_mode & FMODE_WRITE)) | |
4971 | return -EBADF; | |
4972 | } | |
4973 | ||
1da177e4 LT |
4974 | do { |
4975 | status = nfs4_proc_setlk(state, cmd, request); | |
4976 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4977 | break; | |
4978 | timeout = nfs4_set_lock_task_retry(timeout); | |
4979 | status = -ERESTARTSYS; | |
4980 | if (signalled()) | |
4981 | break; | |
4982 | } while(status < 0); | |
1da177e4 LT |
4983 | return status; |
4984 | } | |
4985 | ||
888e694c TM |
4986 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4987 | { | |
4988 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4989 | struct nfs4_exception exception = { }; | |
4990 | int err; | |
4991 | ||
4992 | err = nfs4_set_lock_state(state, fl); | |
4993 | if (err != 0) | |
4994 | goto out; | |
4995 | do { | |
afe6c27c | 4996 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4997 | switch (err) { |
4998 | default: | |
a030889a WAA |
4999 | printk(KERN_ERR "NFS: %s: unhandled error " |
5000 | "%d.\n", __func__, err); | |
d5122201 | 5001 | case 0: |
965b5d67 | 5002 | case -ESTALE: |
d5122201 TM |
5003 | goto out; |
5004 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 5005 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 5006 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 5007 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
5008 | nfs4_schedule_lease_recovery(server->nfs_client); |
5009 | goto out; | |
74e7bb73 RL |
5010 | case -NFS4ERR_BADSESSION: |
5011 | case -NFS4ERR_BADSLOT: | |
5012 | case -NFS4ERR_BAD_HIGH_SLOT: | |
5013 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
5014 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 5015 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
d5122201 | 5016 | goto out; |
965b5d67 TM |
5017 | case -ERESTARTSYS: |
5018 | /* | |
5019 | * The show must go on: exit, but mark the | |
5020 | * stateid as needing recovery. | |
5021 | */ | |
a1d0b5ee | 5022 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
5023 | case -NFS4ERR_ADMIN_REVOKED: |
5024 | case -NFS4ERR_BAD_STATEID: | |
5025 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 5026 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
5027 | err = 0; |
5028 | goto out; | |
168667c4 TM |
5029 | case -EKEYEXPIRED: |
5030 | /* | |
5031 | * User RPCSEC_GSS context has expired. | |
5032 | * We cannot recover this stateid now, so | |
5033 | * skip it and allow recovery thread to | |
5034 | * proceed. | |
5035 | */ | |
5036 | err = 0; | |
5037 | goto out; | |
965b5d67 TM |
5038 | case -ENOMEM: |
5039 | case -NFS4ERR_DENIED: | |
5040 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
5041 | err = 0; | |
5042 | goto out; | |
d5122201 TM |
5043 | case -NFS4ERR_DELAY: |
5044 | break; | |
5045 | } | |
888e694c TM |
5046 | err = nfs4_handle_exception(server, err, &exception); |
5047 | } while (exception.retry); | |
5048 | out: | |
5049 | return err; | |
5050 | } | |
6b3b5496 | 5051 | |
cf470c3e TM |
5052 | struct nfs_release_lockowner_data { |
5053 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5054 | struct nfs_server *server; |
cf470c3e TM |
5055 | struct nfs_release_lockowner_args args; |
5056 | }; | |
5057 | ||
d3c7b7cc TM |
5058 | static void nfs4_release_lockowner_release(void *calldata) |
5059 | { | |
cf470c3e | 5060 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5061 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5062 | kfree(calldata); |
5063 | } | |
5064 | ||
17280175 | 5065 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5066 | .rpc_release = nfs4_release_lockowner_release, |
5067 | }; | |
5068 | ||
cf470c3e | 5069 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
5070 | { |
5071 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 5072 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5073 | struct rpc_message msg = { |
5074 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5075 | }; | |
5076 | ||
5077 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5078 | return -EINVAL; |
5079 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5080 | if (!data) | |
5081 | return -ENOMEM; | |
5082 | data->lsp = lsp; | |
5ae67c4f | 5083 | data->server = server; |
cf470c3e TM |
5084 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5085 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5086 | data->args.lock_owner.s_dev = server->s_dev; | |
5087 | msg.rpc_argp = &data->args; | |
5088 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5089 | return 0; | |
d3c7b7cc TM |
5090 | } |
5091 | ||
aa1870af BF |
5092 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5093 | ||
64c2ce8b AK |
5094 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5095 | const void *buf, size_t buflen, | |
5096 | int flags, int type) | |
6b3b5496 | 5097 | { |
64c2ce8b AK |
5098 | if (strcmp(key, "") != 0) |
5099 | return -EINVAL; | |
4b580ee3 | 5100 | |
64c2ce8b | 5101 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5102 | } |
5103 | ||
64c2ce8b AK |
5104 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5105 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5106 | { |
64c2ce8b AK |
5107 | if (strcmp(key, "") != 0) |
5108 | return -EINVAL; | |
aa1870af | 5109 | |
64c2ce8b | 5110 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5111 | } |
5112 | ||
64c2ce8b AK |
5113 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5114 | size_t list_len, const char *name, | |
5115 | size_t name_len, int type) | |
6b3b5496 | 5116 | { |
64c2ce8b | 5117 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5118 | |
096455a2 BF |
5119 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5120 | return 0; | |
64c2ce8b AK |
5121 | |
5122 | if (list && len <= list_len) | |
5123 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5124 | return len; |
6b3b5496 BF |
5125 | } |
5126 | ||
533eb461 AA |
5127 | /* |
5128 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5129 | */ | |
69aaaae1 TM |
5130 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5131 | { | |
533eb461 AA |
5132 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5133 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5134 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5135 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5136 | return; |
5137 | ||
5138 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5139 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5140 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5141 | fattr->nlink = 2; | |
5142 | } | |
5143 | ||
f05d147f BS |
5144 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5145 | const struct qstr *name, | |
5146 | struct nfs4_fs_locations *fs_locations, | |
5147 | struct page *page) | |
683b57b4 TM |
5148 | { |
5149 | struct nfs_server *server = NFS_SERVER(dir); | |
5150 | u32 bitmask[2] = { | |
361e624f | 5151 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5152 | }; |
5153 | struct nfs4_fs_locations_arg args = { | |
5154 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5155 | .name = name, |
683b57b4 TM |
5156 | .page = page, |
5157 | .bitmask = bitmask, | |
5158 | }; | |
22958463 BH |
5159 | struct nfs4_fs_locations_res res = { |
5160 | .fs_locations = fs_locations, | |
5161 | }; | |
683b57b4 TM |
5162 | struct rpc_message msg = { |
5163 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5164 | .rpc_argp = &args, | |
22958463 | 5165 | .rpc_resp = &res, |
683b57b4 TM |
5166 | }; |
5167 | int status; | |
5168 | ||
3110ff80 | 5169 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5170 | |
5171 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5172 | * is not supported */ | |
5173 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5174 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5175 | else | |
5176 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5177 | ||
c228fd3a | 5178 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5179 | fs_locations->server = server; |
830b8e33 | 5180 | fs_locations->nlocations = 0; |
f05d147f | 5181 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5182 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5183 | return status; |
5184 | } | |
5185 | ||
f05d147f BS |
5186 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5187 | const struct qstr *name, | |
5188 | struct nfs4_fs_locations *fs_locations, | |
5189 | struct page *page) | |
db0a9593 BS |
5190 | { |
5191 | struct nfs4_exception exception = { }; | |
5192 | int err; | |
5193 | do { | |
5194 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5195 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5196 | &exception); |
5197 | } while (exception.retry); | |
5198 | return err; | |
5199 | } | |
5200 | ||
5a5ea0d4 BS |
5201 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5202 | { | |
5203 | int status; | |
5204 | struct nfs4_secinfo_arg args = { | |
5205 | .dir_fh = NFS_FH(dir), | |
5206 | .name = name, | |
5207 | }; | |
5208 | struct nfs4_secinfo_res res = { | |
5209 | .flavors = flavors, | |
5210 | }; | |
5211 | struct rpc_message msg = { | |
5212 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5213 | .rpc_argp = &args, | |
5214 | .rpc_resp = &res, | |
5215 | }; | |
5216 | ||
5217 | dprintk("NFS call secinfo %s\n", name->name); | |
5218 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5219 | dprintk("NFS reply secinfo: %d\n", status); | |
5220 | return status; | |
5221 | } | |
5222 | ||
72de53ec BS |
5223 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5224 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5225 | { |
5226 | struct nfs4_exception exception = { }; | |
5227 | int err; | |
5228 | do { | |
5229 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5230 | _nfs4_proc_secinfo(dir, name, flavors), | |
5231 | &exception); | |
5232 | } while (exception.retry); | |
5233 | return err; | |
5234 | } | |
5235 | ||
557134a3 | 5236 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5237 | /* |
5238 | * Check the exchange flags returned by the server for invalid flags, having | |
5239 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5240 | * DS flags set. | |
5241 | */ | |
5242 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5243 | { | |
5244 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5245 | goto out_inval; | |
5246 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5247 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5248 | goto out_inval; | |
5249 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5250 | goto out_inval; | |
5251 | return NFS_OK; | |
5252 | out_inval: | |
5253 | return -NFS4ERR_INVAL; | |
5254 | } | |
5255 | ||
78fe0f41 | 5256 | static bool |
79d4e1f0 CL |
5257 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5258 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5259 | { |
5260 | if (a->server_scope_sz == b->server_scope_sz && | |
5261 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5262 | return true; | |
5263 | ||
5264 | return false; | |
5265 | } | |
5266 | ||
7c44f1ae WAA |
5267 | /* |
5268 | * nfs4_proc_bind_conn_to_session() | |
5269 | * | |
5270 | * The 4.1 client currently uses the same TCP connection for the | |
5271 | * fore and backchannel. | |
5272 | */ | |
2cf047c9 | 5273 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5274 | { |
5275 | int status; | |
5276 | struct nfs41_bind_conn_to_session_res res; | |
5277 | struct rpc_message msg = { | |
5278 | .rpc_proc = | |
5279 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5280 | .rpc_argp = clp, | |
5281 | .rpc_resp = &res, | |
2cf047c9 | 5282 | .rpc_cred = cred, |
7c44f1ae WAA |
5283 | }; |
5284 | ||
5285 | dprintk("--> %s\n", __func__); | |
5286 | BUG_ON(clp == NULL); | |
5287 | ||
5288 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5289 | if (unlikely(res.session == NULL)) { | |
5290 | status = -ENOMEM; | |
5291 | goto out; | |
5292 | } | |
5293 | ||
5294 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5295 | if (status == 0) { | |
5296 | if (memcmp(res.session->sess_id.data, | |
5297 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5298 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5299 | status = -EIO; | |
5300 | goto out_session; | |
5301 | } | |
5302 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5303 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5304 | __func__); | |
5305 | status = -EIO; | |
5306 | goto out_session; | |
5307 | } | |
5308 | if (res.use_conn_in_rdma_mode) { | |
5309 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5310 | __func__); | |
5311 | status = -EIO; | |
5312 | goto out_session; | |
5313 | } | |
5314 | } | |
5315 | out_session: | |
5316 | kfree(res.session); | |
5317 | out: | |
5318 | dprintk("<-- %s status= %d\n", __func__, status); | |
5319 | return status; | |
5320 | } | |
5321 | ||
99fe60d0 BH |
5322 | /* |
5323 | * nfs4_proc_exchange_id() | |
5324 | * | |
6bbb4ae8 CL |
5325 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5326 | * | |
99fe60d0 BH |
5327 | * Since the clientid has expired, all compounds using sessions |
5328 | * associated with the stale clientid will be returning | |
5329 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5330 | * be in some phase of session reset. | |
5331 | */ | |
4d643d1d | 5332 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5333 | { |
5334 | nfs4_verifier verifier; | |
5335 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5336 | .verifier = &verifier, |
99fe60d0 | 5337 | .client = clp, |
357f54d6 | 5338 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5339 | }; |
5340 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5341 | 0 |
99fe60d0 BH |
5342 | }; |
5343 | int status; | |
5344 | struct rpc_message msg = { | |
5345 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5346 | .rpc_argp = &args, | |
5347 | .rpc_resp = &res, | |
5348 | .rpc_cred = cred, | |
5349 | }; | |
99fe60d0 | 5350 | |
f092075d | 5351 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5352 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5353 | sizeof(args.id)); | |
6bbb4ae8 CL |
5354 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5355 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5356 | args.id_len, args.id); | |
99fe60d0 | 5357 | |
acdeb69d | 5358 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5359 | GFP_NOFS); |
acdeb69d | 5360 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5361 | status = -ENOMEM; |
5362 | goto out; | |
5363 | } | |
78fe0f41 | 5364 | |
79d4e1f0 | 5365 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5366 | GFP_NOFS); |
177313f1 | 5367 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5368 | status = -ENOMEM; |
acdeb69d | 5369 | goto out_server_owner; |
abe9a6d5 | 5370 | } |
78fe0f41 | 5371 | |
bbafffd2 | 5372 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5373 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5374 | status = -ENOMEM; |
5375 | goto out_server_scope; | |
5376 | } | |
5377 | ||
1bd714f2 | 5378 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5379 | if (status == 0) |
32b01310 | 5380 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5381 | |
acdeb69d | 5382 | if (status == 0) { |
32b01310 TM |
5383 | clp->cl_clientid = res.clientid; |
5384 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5385 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5386 | clp->cl_seqid = res.seqid; | |
5387 | ||
acdeb69d CL |
5388 | kfree(clp->cl_serverowner); |
5389 | clp->cl_serverowner = res.server_owner; | |
5390 | res.server_owner = NULL; | |
78fe0f41 | 5391 | |
7d2ed9ac | 5392 | /* use the most recent implementation id */ |
59155546 CL |
5393 | kfree(clp->cl_implid); |
5394 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5395 | |
177313f1 | 5396 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5397 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5398 | res.server_scope)) { |
5399 | dprintk("%s: server_scope mismatch detected\n", | |
5400 | __func__); | |
5401 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5402 | kfree(clp->cl_serverscope); |
5403 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5404 | } |
5405 | ||
177313f1 | 5406 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5407 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5408 | goto out; |
5409 | } | |
32b01310 TM |
5410 | } else |
5411 | kfree(res.impl_id); | |
7d2ed9ac | 5412 | |
acdeb69d CL |
5413 | out_server_owner: |
5414 | kfree(res.server_owner); | |
7d2ed9ac | 5415 | out_server_scope: |
abe9a6d5 WAA |
5416 | kfree(res.server_scope); |
5417 | out: | |
177313f1 | 5418 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5419 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5420 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5421 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5422 | clp->cl_implid->date.seconds, |
5423 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5424 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5425 | return status; |
5426 | } | |
5427 | ||
66245539 TM |
5428 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5429 | struct rpc_cred *cred) | |
5430 | { | |
5431 | struct rpc_message msg = { | |
5432 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5433 | .rpc_argp = clp, | |
5434 | .rpc_cred = cred, | |
5435 | }; | |
5436 | int status; | |
5437 | ||
5438 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5439 | if (status) | |
02c67525 | 5440 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5441 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5442 | return status; | |
5443 | } | |
5444 | ||
5445 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5446 | struct rpc_cred *cred) | |
5447 | { | |
5448 | unsigned int loop; | |
5449 | int ret; | |
5450 | ||
5451 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5452 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5453 | switch (ret) { | |
5454 | case -NFS4ERR_DELAY: | |
5455 | case -NFS4ERR_CLIENTID_BUSY: | |
5456 | ssleep(1); | |
5457 | break; | |
5458 | default: | |
5459 | return ret; | |
5460 | } | |
5461 | } | |
5462 | return 0; | |
5463 | } | |
5464 | ||
5465 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5466 | { | |
5467 | struct rpc_cred *cred; | |
5468 | int ret = 0; | |
5469 | ||
5470 | if (clp->cl_mvops->minor_version < 1) | |
5471 | goto out; | |
5472 | if (clp->cl_exchange_flags == 0) | |
5473 | goto out; | |
05f4c350 CL |
5474 | if (clp->cl_preserve_clid) |
5475 | goto out; | |
66245539 TM |
5476 | cred = nfs4_get_exchange_id_cred(clp); |
5477 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5478 | if (cred) | |
5479 | put_rpccred(cred); | |
5480 | switch (ret) { | |
5481 | case 0: | |
5482 | case -NFS4ERR_STALE_CLIENTID: | |
5483 | clp->cl_exchange_flags = 0; | |
5484 | } | |
5485 | out: | |
5486 | return ret; | |
5487 | } | |
5488 | ||
2050f0cc AA |
5489 | struct nfs4_get_lease_time_data { |
5490 | struct nfs4_get_lease_time_args *args; | |
5491 | struct nfs4_get_lease_time_res *res; | |
5492 | struct nfs_client *clp; | |
5493 | }; | |
5494 | ||
5495 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5496 | void *calldata) | |
5497 | { | |
5498 | int ret; | |
5499 | struct nfs4_get_lease_time_data *data = | |
5500 | (struct nfs4_get_lease_time_data *)calldata; | |
5501 | ||
5502 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5503 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5504 | /* just setup sequence, do not trigger session recovery |
5505 | since we're invoked within one */ | |
5506 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5507 | &data->args->la_seq_args, |
9d12b216 | 5508 | &data->res->lr_seq_res, task); |
2050f0cc AA |
5509 | |
5510 | BUG_ON(ret == -EAGAIN); | |
5511 | rpc_call_start(task); | |
5512 | dprintk("<-- %s\n", __func__); | |
5513 | } | |
5514 | ||
5515 | /* | |
5516 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5517 | * from sequence operation or clientid errors. | |
5518 | */ | |
5519 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5520 | { | |
5521 | struct nfs4_get_lease_time_data *data = | |
5522 | (struct nfs4_get_lease_time_data *)calldata; | |
5523 | ||
5524 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5525 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5526 | return; | |
2050f0cc AA |
5527 | switch (task->tk_status) { |
5528 | case -NFS4ERR_DELAY: | |
5529 | case -NFS4ERR_GRACE: | |
5530 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5531 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5532 | task->tk_status = 0; | |
a8a4ae3a AA |
5533 | /* fall through */ |
5534 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5535 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5536 | return; |
5537 | } | |
2050f0cc AA |
5538 | dprintk("<-- %s\n", __func__); |
5539 | } | |
5540 | ||
17280175 | 5541 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5542 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5543 | .rpc_call_done = nfs4_get_lease_time_done, | |
5544 | }; | |
5545 | ||
5546 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5547 | { | |
5548 | struct rpc_task *task; | |
5549 | struct nfs4_get_lease_time_args args; | |
5550 | struct nfs4_get_lease_time_res res = { | |
5551 | .lr_fsinfo = fsinfo, | |
5552 | }; | |
5553 | struct nfs4_get_lease_time_data data = { | |
5554 | .args = &args, | |
5555 | .res = &res, | |
5556 | .clp = clp, | |
5557 | }; | |
5558 | struct rpc_message msg = { | |
5559 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5560 | .rpc_argp = &args, | |
5561 | .rpc_resp = &res, | |
5562 | }; | |
5563 | struct rpc_task_setup task_setup = { | |
5564 | .rpc_client = clp->cl_rpcclient, | |
5565 | .rpc_message = &msg, | |
5566 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5567 | .callback_data = &data, |
5568 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5569 | }; |
5570 | int status; | |
5571 | ||
9d12b216 | 5572 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5573 | dprintk("--> %s\n", __func__); |
5574 | task = rpc_run_task(&task_setup); | |
5575 | ||
5576 | if (IS_ERR(task)) | |
5577 | status = PTR_ERR(task); | |
5578 | else { | |
5579 | status = task->tk_status; | |
5580 | rpc_put_task(task); | |
5581 | } | |
5582 | dprintk("<-- %s return %d\n", __func__, status); | |
5583 | ||
5584 | return status; | |
5585 | } | |
5586 | ||
f86f36a6 TM |
5587 | static struct nfs4_slot *nfs4_alloc_slots(u32 max_slots, gfp_t gfp_flags) |
5588 | { | |
5589 | return kcalloc(max_slots, sizeof(struct nfs4_slot), gfp_flags); | |
5590 | } | |
5591 | ||
5592 | static void nfs4_add_and_init_slots(struct nfs4_slot_table *tbl, | |
5593 | struct nfs4_slot *new, | |
5594 | u32 max_slots, | |
5595 | u32 ivalue) | |
5596 | { | |
5597 | struct nfs4_slot *old = NULL; | |
5598 | u32 i; | |
5599 | ||
5600 | spin_lock(&tbl->slot_tbl_lock); | |
5601 | if (new) { | |
5602 | old = tbl->slots; | |
5603 | tbl->slots = new; | |
5604 | tbl->max_slots = max_slots; | |
5605 | } | |
5606 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5607 | for (i = 0; i < tbl->max_slots; i++) | |
5608 | tbl->slots[i].seq_nr = ivalue; | |
5609 | spin_unlock(&tbl->slot_tbl_lock); | |
5610 | kfree(old); | |
5611 | } | |
5612 | ||
b73dafa7 | 5613 | /* |
f86f36a6 | 5614 | * (re)Initialise a slot table |
b73dafa7 | 5615 | */ |
f86f36a6 TM |
5616 | static int nfs4_realloc_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5617 | u32 ivalue) | |
ac72b7b3 | 5618 | { |
104aeba4 | 5619 | struct nfs4_slot *new = NULL; |
f86f36a6 | 5620 | int ret = -ENOMEM; |
ac72b7b3 | 5621 | |
104aeba4 AA |
5622 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5623 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5624 | |
104aeba4 AA |
5625 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5626 | if (max_reqs != tbl->max_slots) { | |
f86f36a6 | 5627 | new = nfs4_alloc_slots(max_reqs, GFP_NOFS); |
104aeba4 AA |
5628 | if (!new) |
5629 | goto out; | |
104aeba4 | 5630 | } |
f86f36a6 TM |
5631 | ret = 0; |
5632 | ||
5633 | nfs4_add_and_init_slots(tbl, new, max_reqs, ivalue); | |
ac72b7b3 AA |
5634 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, |
5635 | tbl, tbl->slots, tbl->max_slots); | |
5636 | out: | |
5637 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5638 | return ret; | |
5639 | } | |
5640 | ||
f8625a6a RL |
5641 | /* Destroy the slot table */ |
5642 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5643 | { | |
5644 | if (session->fc_slot_table.slots != NULL) { | |
5645 | kfree(session->fc_slot_table.slots); | |
5646 | session->fc_slot_table.slots = NULL; | |
5647 | } | |
5648 | if (session->bc_slot_table.slots != NULL) { | |
5649 | kfree(session->bc_slot_table.slots); | |
5650 | session->bc_slot_table.slots = NULL; | |
5651 | } | |
5652 | return; | |
5653 | } | |
5654 | ||
050047ce | 5655 | /* |
aacd5537 | 5656 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5657 | */ |
aacd5537 | 5658 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5659 | { |
f26468fb | 5660 | struct nfs4_slot_table *tbl; |
aacd5537 | 5661 | int status; |
050047ce | 5662 | |
aacd5537 AA |
5663 | dprintk("--> %s\n", __func__); |
5664 | /* Fore channel */ | |
5665 | tbl = &ses->fc_slot_table; | |
f86f36a6 TM |
5666 | status = nfs4_realloc_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5667 | if (status) /* -ENOMEM */ | |
5668 | return status; | |
aacd5537 AA |
5669 | /* Back channel */ |
5670 | tbl = &ses->bc_slot_table; | |
f86f36a6 TM |
5671 | status = nfs4_realloc_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
5672 | if (status && tbl->slots == NULL) | |
5673 | /* Fore and back channel share a connection so get | |
5674 | * both slot tables or neither */ | |
5675 | nfs4_destroy_slot_tables(ses); | |
f8625a6a | 5676 | return status; |
557134a3 AA |
5677 | } |
5678 | ||
5679 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5680 | { | |
5681 | struct nfs4_session *session; | |
5682 | struct nfs4_slot_table *tbl; | |
5683 | ||
8535b2be | 5684 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5685 | if (!session) |
5686 | return NULL; | |
76db6d95 | 5687 | |
557134a3 | 5688 | tbl = &session->fc_slot_table; |
45d43c29 | 5689 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5690 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5691 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5692 | init_completion(&tbl->complete); |
f8625a6a RL |
5693 | |
5694 | tbl = &session->bc_slot_table; | |
45d43c29 | 5695 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5696 | spin_lock_init(&tbl->slot_tbl_lock); |
5697 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5698 | init_completion(&tbl->complete); |
f8625a6a | 5699 | |
1055d76d TM |
5700 | session->session_state = 1<<NFS4_SESSION_INITING; |
5701 | ||
557134a3 AA |
5702 | session->clp = clp; |
5703 | return session; | |
5704 | } | |
5705 | ||
5706 | void nfs4_destroy_session(struct nfs4_session *session) | |
5707 | { | |
2446ab60 | 5708 | struct rpc_xprt *xprt; |
848f5bda | 5709 | struct rpc_cred *cred; |
2446ab60 | 5710 | |
848f5bda TM |
5711 | cred = nfs4_get_exchange_id_cred(session->clp); |
5712 | nfs4_proc_destroy_session(session, cred); | |
5713 | if (cred) | |
5714 | put_rpccred(cred); | |
2446ab60 TM |
5715 | |
5716 | rcu_read_lock(); | |
5717 | xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); | |
5718 | rcu_read_unlock(); | |
5a0ffe54 | 5719 | dprintk("%s Destroy backchannel for xprt %p\n", |
2446ab60 TM |
5720 | __func__, xprt); |
5721 | xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5722 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5723 | kfree(session); |
5724 | } | |
5725 | ||
fc931582 AA |
5726 | /* |
5727 | * Initialize the values to be used by the client in CREATE_SESSION | |
5728 | * If nfs4_init_session set the fore channel request and response sizes, | |
5729 | * use them. | |
5730 | * | |
5731 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5732 | * always set csa_cachethis to FALSE because the current implementation | |
5733 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5734 | */ | |
5735 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5736 | { | |
5737 | struct nfs4_session *session = args->client->cl_session; | |
5738 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5739 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5740 | ||
5741 | if (mxrqst_sz == 0) | |
5742 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5743 | if (mxresp_sz == 0) | |
5744 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5745 | /* Fore channel attributes */ | |
fc931582 AA |
5746 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5747 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5748 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5749 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5750 | |
5751 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5752 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5753 | __func__, |
5754 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5755 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5756 | |
5757 | /* Back channel attributes */ | |
fc931582 AA |
5758 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5759 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5760 | args->bc_attrs.max_resp_sz_cached = 0; | |
5761 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5762 | args->bc_attrs.max_reqs = 1; | |
5763 | ||
5764 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5765 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5766 | __func__, | |
5767 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5768 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5769 | args->bc_attrs.max_reqs); | |
5770 | } | |
5771 | ||
43c2e885 | 5772 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5773 | { |
43c2e885 BF |
5774 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5775 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5776 | ||
43c2e885 BF |
5777 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5778 | return -EINVAL; | |
5779 | /* | |
5780 | * Our requested max_ops is the minimum we need; we're not | |
5781 | * prepared to break up compounds into smaller pieces than that. | |
5782 | * So, no point even trying to continue if the server won't | |
5783 | * cooperate: | |
5784 | */ | |
5785 | if (rcvd->max_ops < sent->max_ops) | |
5786 | return -EINVAL; | |
5787 | if (rcvd->max_reqs == 0) | |
5788 | return -EINVAL; | |
b4b9a0c1 VG |
5789 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5790 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5791 | return 0; |
8d35301d AA |
5792 | } |
5793 | ||
43c2e885 BF |
5794 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5795 | { | |
5796 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5797 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5798 | |
43c2e885 BF |
5799 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5800 | return -EINVAL; | |
5801 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5802 | return -EINVAL; | |
5803 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5804 | return -EINVAL; | |
5805 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5806 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5807 | return -EINVAL; |
b4b9a0c1 | 5808 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5809 | return -EINVAL; |
5810 | return 0; | |
5811 | } | |
8d35301d | 5812 | |
8d35301d AA |
5813 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5814 | struct nfs4_session *session) | |
5815 | { | |
43c2e885 | 5816 | int ret; |
8d35301d | 5817 | |
43c2e885 BF |
5818 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5819 | if (ret) | |
5820 | return ret; | |
5821 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5822 | } |
5823 | ||
848f5bda TM |
5824 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5825 | struct rpc_cred *cred) | |
fc931582 AA |
5826 | { |
5827 | struct nfs4_session *session = clp->cl_session; | |
5828 | struct nfs41_create_session_args args = { | |
5829 | .client = clp, | |
5830 | .cb_program = NFS4_CALLBACK, | |
5831 | }; | |
5832 | struct nfs41_create_session_res res = { | |
5833 | .client = clp, | |
5834 | }; | |
5835 | struct rpc_message msg = { | |
5836 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5837 | .rpc_argp = &args, | |
5838 | .rpc_resp = &res, | |
848f5bda | 5839 | .rpc_cred = cred, |
fc931582 AA |
5840 | }; |
5841 | int status; | |
5842 | ||
5843 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5844 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5845 | |
1bd714f2 | 5846 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5847 | |
8d35301d AA |
5848 | if (!status) |
5849 | /* Verify the session's negotiated channel_attrs values */ | |
5850 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5851 | if (!status) { |
5852 | /* Increment the clientid slot sequence id */ | |
5853 | clp->cl_seqid++; | |
5854 | } | |
5855 | ||
5856 | return status; | |
5857 | } | |
5858 | ||
5859 | /* | |
5860 | * Issues a CREATE_SESSION operation to the server. | |
5861 | * It is the responsibility of the caller to verify the session is | |
5862 | * expired before calling this routine. | |
5863 | */ | |
848f5bda | 5864 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5865 | { |
5866 | int status; | |
5867 | unsigned *ptr; | |
fc931582 AA |
5868 | struct nfs4_session *session = clp->cl_session; |
5869 | ||
5870 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5871 | ||
848f5bda | 5872 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5873 | if (status) |
5874 | goto out; | |
5875 | ||
aacd5537 AA |
5876 | /* Init or reset the session slot tables */ |
5877 | status = nfs4_setup_session_slot_tables(session); | |
5878 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5879 | if (status) |
5880 | goto out; | |
5881 | ||
5882 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5883 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5884 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5885 | out: |
5886 | dprintk("<-- %s\n", __func__); | |
5887 | return status; | |
5888 | } | |
5889 | ||
0f3e66c6 AA |
5890 | /* |
5891 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5892 | * The caller must serialize access to this routine. | |
5893 | */ | |
848f5bda TM |
5894 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5895 | struct rpc_cred *cred) | |
0f3e66c6 | 5896 | { |
848f5bda TM |
5897 | struct rpc_message msg = { |
5898 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5899 | .rpc_argp = session, | |
5900 | .rpc_cred = cred, | |
5901 | }; | |
0f3e66c6 | 5902 | int status = 0; |
0f3e66c6 AA |
5903 | |
5904 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5905 | ||
5906 | /* session is still being setup */ | |
5907 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5908 | return status; | |
5909 | ||
1bd714f2 | 5910 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5911 | |
5912 | if (status) | |
08106ac7 | 5913 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5914 | "Session has been destroyed regardless...\n", status); |
5915 | ||
5916 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5917 | return status; | |
5918 | } | |
5919 | ||
7b38c368 TM |
5920 | /* |
5921 | * With sessions, the client is not marked ready until after a | |
5922 | * successful EXCHANGE_ID and CREATE_SESSION. | |
5923 | * | |
5924 | * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate | |
5925 | * other versions of NFS can be tried. | |
5926 | */ | |
5927 | static int nfs41_check_session_ready(struct nfs_client *clp) | |
5928 | { | |
5929 | int ret; | |
5930 | ||
5931 | if (clp->cl_cons_state == NFS_CS_SESSION_INITING) { | |
5932 | ret = nfs4_client_recover_expired_lease(clp); | |
5933 | if (ret) | |
5934 | return ret; | |
5935 | } | |
5936 | if (clp->cl_cons_state < NFS_CS_READY) | |
5937 | return -EPROTONOSUPPORT; | |
54ac471c | 5938 | smp_rmb(); |
7b38c368 TM |
5939 | return 0; |
5940 | } | |
5941 | ||
fccba804 TM |
5942 | int nfs4_init_session(struct nfs_server *server) |
5943 | { | |
5944 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5945 | struct nfs4_session *session; |
68bf05ef | 5946 | unsigned int rsize, wsize; |
fccba804 TM |
5947 | |
5948 | if (!nfs4_has_session(clp)) | |
5949 | return 0; | |
5950 | ||
1055d76d | 5951 | session = clp->cl_session; |
7b38c368 TM |
5952 | spin_lock(&clp->cl_lock); |
5953 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
1055d76d | 5954 | |
7b38c368 TM |
5955 | rsize = server->rsize; |
5956 | if (rsize == 0) | |
5957 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5958 | wsize = server->wsize; | |
5959 | if (wsize == 0) | |
5960 | wsize = NFS_MAX_FILE_IO_SIZE; | |
68bf05ef | 5961 | |
7b38c368 TM |
5962 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5963 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
5964 | } | |
5965 | spin_unlock(&clp->cl_lock); | |
2449ea2e | 5966 | |
7b38c368 | 5967 | return nfs41_check_session_ready(clp); |
fccba804 TM |
5968 | } |
5969 | ||
7b38c368 | 5970 | int nfs4_init_ds_session(struct nfs_client *clp, unsigned long lease_time) |
d83217c1 AA |
5971 | { |
5972 | struct nfs4_session *session = clp->cl_session; | |
5973 | int ret; | |
5974 | ||
7b38c368 TM |
5975 | spin_lock(&clp->cl_lock); |
5976 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
5977 | /* | |
5978 | * Do not set NFS_CS_CHECK_LEASE_TIME instead set the | |
5979 | * DS lease to be equal to the MDS lease. | |
5980 | */ | |
5981 | clp->cl_lease_time = lease_time; | |
5982 | clp->cl_last_renewal = jiffies; | |
5983 | } | |
5984 | spin_unlock(&clp->cl_lock); | |
d83217c1 | 5985 | |
7b38c368 TM |
5986 | ret = nfs41_check_session_ready(clp); |
5987 | if (ret) | |
5988 | return ret; | |
5989 | /* Test for the DS role */ | |
5990 | if (!is_ds_client(clp)) | |
5991 | return -ENODEV; | |
5992 | return 0; | |
d83217c1 AA |
5993 | } |
5994 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5995 | ||
5996 | ||
fc01cea9 AA |
5997 | /* |
5998 | * Renew the cl_session lease. | |
5999 | */ | |
d5f8d3fe TM |
6000 | struct nfs4_sequence_data { |
6001 | struct nfs_client *clp; | |
6002 | struct nfs4_sequence_args args; | |
6003 | struct nfs4_sequence_res res; | |
6004 | }; | |
6005 | ||
dc96aef9 AB |
6006 | static void nfs41_sequence_release(void *data) |
6007 | { | |
d5f8d3fe TM |
6008 | struct nfs4_sequence_data *calldata = data; |
6009 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 6010 | |
7135840f AB |
6011 | if (atomic_read(&clp->cl_count) > 1) |
6012 | nfs4_schedule_state_renewal(clp); | |
6013 | nfs_put_client(clp); | |
d5f8d3fe | 6014 | kfree(calldata); |
dc96aef9 AB |
6015 | } |
6016 | ||
aa5190d0 TM |
6017 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6018 | { | |
6019 | switch(task->tk_status) { | |
6020 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
6021 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
6022 | return -EAGAIN; | |
6023 | default: | |
0400a6b0 | 6024 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6025 | } |
6026 | return 0; | |
6027 | } | |
6028 | ||
dc96aef9 | 6029 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 6030 | { |
d5f8d3fe TM |
6031 | struct nfs4_sequence_data *calldata = data; |
6032 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 6033 | |
14516c3a TM |
6034 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
6035 | return; | |
fc01cea9 AA |
6036 | |
6037 | if (task->tk_status < 0) { | |
6038 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
6039 | if (atomic_read(&clp->cl_count) == 1) |
6040 | goto out; | |
fc01cea9 | 6041 | |
aa5190d0 TM |
6042 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
6043 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
6044 | return; |
6045 | } | |
6046 | } | |
fc01cea9 | 6047 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 6048 | out: |
fc01cea9 AA |
6049 | dprintk("<-- %s\n", __func__); |
6050 | } | |
6051 | ||
6052 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
6053 | { | |
d5f8d3fe TM |
6054 | struct nfs4_sequence_data *calldata = data; |
6055 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
6056 | struct nfs4_sequence_args *args; |
6057 | struct nfs4_sequence_res *res; | |
6058 | ||
fc01cea9 AA |
6059 | args = task->tk_msg.rpc_argp; |
6060 | res = task->tk_msg.rpc_resp; | |
6061 | ||
9d12b216 | 6062 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
6063 | return; |
6064 | rpc_call_start(task); | |
6065 | } | |
6066 | ||
6067 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
6068 | .rpc_call_done = nfs41_sequence_call_done, | |
6069 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 6070 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6071 | }; |
6072 | ||
71ac6da9 | 6073 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 6074 | { |
d5f8d3fe | 6075 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6076 | struct rpc_message msg = { |
6077 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6078 | .rpc_cred = cred, | |
6079 | }; | |
71ac6da9 TM |
6080 | struct rpc_task_setup task_setup_data = { |
6081 | .rpc_client = clp->cl_rpcclient, | |
6082 | .rpc_message = &msg, | |
6083 | .callback_ops = &nfs41_sequence_ops, | |
6084 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
6085 | }; | |
fc01cea9 | 6086 | |
7135840f | 6087 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6088 | return ERR_PTR(-EIO); |
dfb4f309 | 6089 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6090 | if (calldata == NULL) { |
7135840f | 6091 | nfs_put_client(clp); |
71ac6da9 | 6092 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6093 | } |
9d12b216 | 6094 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
6095 | msg.rpc_argp = &calldata->args; |
6096 | msg.rpc_resp = &calldata->res; | |
6097 | calldata->clp = clp; | |
71ac6da9 | 6098 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6099 | |
71ac6da9 TM |
6100 | return rpc_run_task(&task_setup_data); |
6101 | } | |
6102 | ||
2f60ea6b | 6103 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6104 | { |
6105 | struct rpc_task *task; | |
6106 | int ret = 0; | |
6107 | ||
2f60ea6b TM |
6108 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6109 | return 0; | |
71ac6da9 TM |
6110 | task = _nfs41_proc_sequence(clp, cred); |
6111 | if (IS_ERR(task)) | |
6112 | ret = PTR_ERR(task); | |
6113 | else | |
bf294b41 | 6114 | rpc_put_task_async(task); |
71ac6da9 TM |
6115 | dprintk("<-- %s status=%d\n", __func__, ret); |
6116 | return ret; | |
6117 | } | |
6118 | ||
6119 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6120 | { | |
6121 | struct rpc_task *task; | |
6122 | int ret; | |
6123 | ||
6124 | task = _nfs41_proc_sequence(clp, cred); | |
6125 | if (IS_ERR(task)) { | |
6126 | ret = PTR_ERR(task); | |
6127 | goto out; | |
6128 | } | |
6129 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6130 | if (!ret) { |
6131 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6132 | ||
6133 | if (task->tk_status == 0) | |
6134 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6135 | ret = task->tk_status; |
b4410c2f | 6136 | } |
71ac6da9 TM |
6137 | rpc_put_task(task); |
6138 | out: | |
6139 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6140 | return ret; | |
fc01cea9 AA |
6141 | } |
6142 | ||
fce5c838 RL |
6143 | struct nfs4_reclaim_complete_data { |
6144 | struct nfs_client *clp; | |
6145 | struct nfs41_reclaim_complete_args arg; | |
6146 | struct nfs41_reclaim_complete_res res; | |
6147 | }; | |
6148 | ||
6149 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6150 | { | |
6151 | struct nfs4_reclaim_complete_data *calldata = data; | |
6152 | ||
b257957e | 6153 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
6154 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
6155 | &calldata->arg.seq_args, | |
9d12b216 | 6156 | &calldata->res.seq_res, task)) |
fce5c838 RL |
6157 | return; |
6158 | ||
6159 | rpc_call_start(task); | |
6160 | } | |
6161 | ||
aa5190d0 TM |
6162 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6163 | { | |
6164 | switch(task->tk_status) { | |
6165 | case 0: | |
6166 | case -NFS4ERR_COMPLETE_ALREADY: | |
6167 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6168 | break; | |
6169 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6170 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6171 | /* fall through */ |
6172 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6173 | return -EAGAIN; |
6174 | default: | |
0400a6b0 | 6175 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6176 | } |
6177 | return 0; | |
6178 | } | |
6179 | ||
fce5c838 RL |
6180 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6181 | { | |
6182 | struct nfs4_reclaim_complete_data *calldata = data; | |
6183 | struct nfs_client *clp = calldata->clp; | |
6184 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6185 | ||
6186 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6187 | if (!nfs41_sequence_done(task, res)) |
6188 | return; | |
fce5c838 | 6189 | |
aa5190d0 TM |
6190 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6191 | rpc_restart_call_prepare(task); | |
6192 | return; | |
6193 | } | |
fce5c838 RL |
6194 | dprintk("<-- %s\n", __func__); |
6195 | } | |
6196 | ||
6197 | static void nfs4_free_reclaim_complete_data(void *data) | |
6198 | { | |
6199 | struct nfs4_reclaim_complete_data *calldata = data; | |
6200 | ||
6201 | kfree(calldata); | |
6202 | } | |
6203 | ||
6204 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6205 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6206 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6207 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6208 | }; | |
6209 | ||
6210 | /* | |
6211 | * Issue a global reclaim complete. | |
6212 | */ | |
6213 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
6214 | { | |
6215 | struct nfs4_reclaim_complete_data *calldata; | |
6216 | struct rpc_task *task; | |
6217 | struct rpc_message msg = { | |
6218 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
6219 | }; | |
6220 | struct rpc_task_setup task_setup_data = { | |
6221 | .rpc_client = clp->cl_rpcclient, | |
6222 | .rpc_message = &msg, | |
6223 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6224 | .flags = RPC_TASK_ASYNC, | |
6225 | }; | |
6226 | int status = -ENOMEM; | |
6227 | ||
6228 | dprintk("--> %s\n", __func__); | |
8535b2be | 6229 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6230 | if (calldata == NULL) |
6231 | goto out; | |
6232 | calldata->clp = clp; | |
6233 | calldata->arg.one_fs = 0; | |
fce5c838 | 6234 | |
9d12b216 | 6235 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
6236 | msg.rpc_argp = &calldata->arg; |
6237 | msg.rpc_resp = &calldata->res; | |
6238 | task_setup_data.callback_data = calldata; | |
6239 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6240 | if (IS_ERR(task)) { |
fce5c838 | 6241 | status = PTR_ERR(task); |
acf82b85 DC |
6242 | goto out; |
6243 | } | |
c34c32ea AA |
6244 | status = nfs4_wait_for_completion_rpc_task(task); |
6245 | if (status == 0) | |
6246 | status = task->tk_status; | |
fce5c838 | 6247 | rpc_put_task(task); |
acf82b85 | 6248 | return 0; |
fce5c838 RL |
6249 | out: |
6250 | dprintk("<-- %s status=%d\n", __func__, status); | |
6251 | return status; | |
6252 | } | |
b1f69b75 AA |
6253 | |
6254 | static void | |
6255 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6256 | { | |
6257 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6258 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
6259 | |
6260 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6261 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6262 | * right now covering the LAYOUTGET we are about to send. | |
6263 | * However, that is not so catastrophic, and there seems | |
6264 | * to be no way to prevent it completely. | |
6265 | */ | |
b1f69b75 | 6266 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 6267 | &lgp->res.seq_res, task)) |
b1f69b75 | 6268 | return; |
cf7d63f1 FI |
6269 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6270 | NFS_I(lgp->args.inode)->layout, | |
6271 | lgp->args.ctx->state)) { | |
6272 | rpc_exit(task, NFS4_OK); | |
6273 | return; | |
6274 | } | |
b1f69b75 AA |
6275 | rpc_call_start(task); |
6276 | } | |
6277 | ||
6278 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6279 | { | |
6280 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6281 | struct inode *inode = lgp->args.inode; |
6282 | struct nfs_server *server = NFS_SERVER(inode); | |
6283 | struct pnfs_layout_hdr *lo; | |
6284 | struct nfs4_state *state = NULL; | |
b1f69b75 AA |
6285 | |
6286 | dprintk("--> %s\n", __func__); | |
6287 | ||
6288 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
ee314c2a | 6289 | goto out; |
b1f69b75 AA |
6290 | |
6291 | switch (task->tk_status) { | |
6292 | case 0: | |
ee314c2a | 6293 | goto out; |
b1f69b75 AA |
6294 | case -NFS4ERR_LAYOUTTRYLATER: |
6295 | case -NFS4ERR_RECALLCONFLICT: | |
6296 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6297 | break; |
6298 | case -NFS4ERR_EXPIRED: | |
6299 | case -NFS4ERR_BAD_STATEID: | |
6300 | spin_lock(&inode->i_lock); | |
6301 | lo = NFS_I(inode)->layout; | |
6302 | if (!lo || list_empty(&lo->plh_segs)) { | |
6303 | spin_unlock(&inode->i_lock); | |
6304 | /* If the open stateid was bad, then recover it. */ | |
6305 | state = lgp->args.ctx->state; | |
6306 | } else { | |
6307 | LIST_HEAD(head); | |
6308 | ||
6309 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6310 | spin_unlock(&inode->i_lock); | |
6311 | /* Mark the bad layout state as invalid, then | |
6312 | * retry using the open stateid. */ | |
6313 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6314 | } |
6315 | } | |
ee314c2a TM |
6316 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6317 | rpc_restart_call_prepare(task); | |
6318 | out: | |
b1f69b75 AA |
6319 | dprintk("<-- %s\n", __func__); |
6320 | } | |
6321 | ||
8554116e IK |
6322 | static size_t max_response_pages(struct nfs_server *server) |
6323 | { | |
6324 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6325 | return nfs_page_array_len(0, max_resp_sz); | |
6326 | } | |
6327 | ||
6328 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6329 | { | |
6330 | int i; | |
6331 | ||
6332 | if (!pages) | |
6333 | return; | |
6334 | ||
6335 | for (i = 0; i < size; i++) { | |
6336 | if (!pages[i]) | |
6337 | break; | |
6338 | __free_page(pages[i]); | |
6339 | } | |
6340 | kfree(pages); | |
6341 | } | |
6342 | ||
6343 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6344 | { | |
6345 | struct page **pages; | |
6346 | int i; | |
6347 | ||
6348 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6349 | if (!pages) { | |
6350 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6351 | return NULL; | |
6352 | } | |
6353 | ||
6354 | for (i = 0; i < size; i++) { | |
6355 | pages[i] = alloc_page(gfp_flags); | |
6356 | if (!pages[i]) { | |
6357 | dprintk("%s: failed to allocate page\n", __func__); | |
6358 | nfs4_free_pages(pages, size); | |
6359 | return NULL; | |
6360 | } | |
6361 | } | |
6362 | ||
6363 | return pages; | |
6364 | } | |
6365 | ||
b1f69b75 AA |
6366 | static void nfs4_layoutget_release(void *calldata) |
6367 | { | |
6368 | struct nfs4_layoutget *lgp = calldata; | |
8554116e IK |
6369 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6370 | size_t max_pages = max_response_pages(server); | |
b1f69b75 AA |
6371 | |
6372 | dprintk("--> %s\n", __func__); | |
8554116e | 6373 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
b1f69b75 AA |
6374 | put_nfs_open_context(lgp->args.ctx); |
6375 | kfree(calldata); | |
6376 | dprintk("<-- %s\n", __func__); | |
6377 | } | |
6378 | ||
6379 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6380 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6381 | .rpc_call_done = nfs4_layoutget_done, | |
6382 | .rpc_release = nfs4_layoutget_release, | |
6383 | }; | |
6384 | ||
a0b0a6e3 TM |
6385 | struct pnfs_layout_segment * |
6386 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 AA |
6387 | { |
6388 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
8554116e | 6389 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6390 | struct rpc_task *task; |
6391 | struct rpc_message msg = { | |
6392 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6393 | .rpc_argp = &lgp->args, | |
6394 | .rpc_resp = &lgp->res, | |
6395 | }; | |
6396 | struct rpc_task_setup task_setup_data = { | |
6397 | .rpc_client = server->client, | |
6398 | .rpc_message = &msg, | |
6399 | .callback_ops = &nfs4_layoutget_call_ops, | |
6400 | .callback_data = lgp, | |
6401 | .flags = RPC_TASK_ASYNC, | |
6402 | }; | |
a0b0a6e3 | 6403 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6404 | int status = 0; |
6405 | ||
6406 | dprintk("--> %s\n", __func__); | |
6407 | ||
8554116e IK |
6408 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6409 | if (!lgp->args.layout.pages) { | |
6410 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6411 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6412 | } |
6413 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
6414 | ||
35124a09 | 6415 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6416 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6417 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
6418 | task = rpc_run_task(&task_setup_data); |
6419 | if (IS_ERR(task)) | |
a0b0a6e3 | 6420 | return ERR_CAST(task); |
b1f69b75 | 6421 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6422 | if (status == 0) |
6423 | status = task->tk_status; | |
6424 | if (status == 0) | |
a0b0a6e3 | 6425 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6426 | rpc_put_task(task); |
6427 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6428 | if (status) |
6429 | return ERR_PTR(status); | |
6430 | return lseg; | |
b1f69b75 AA |
6431 | } |
6432 | ||
cbe82603 BH |
6433 | static void |
6434 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6435 | { | |
6436 | struct nfs4_layoutreturn *lrp = calldata; | |
6437 | ||
6438 | dprintk("--> %s\n", __func__); | |
6439 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 6440 | &lrp->res.seq_res, task)) |
cbe82603 BH |
6441 | return; |
6442 | rpc_call_start(task); | |
6443 | } | |
6444 | ||
6445 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6446 | { | |
6447 | struct nfs4_layoutreturn *lrp = calldata; | |
6448 | struct nfs_server *server; | |
6449 | ||
6450 | dprintk("--> %s\n", __func__); | |
6451 | ||
6452 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
6453 | return; | |
6454 | ||
6455 | server = NFS_SERVER(lrp->args.inode); | |
6456 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6457 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6458 | return; |
6459 | } | |
cbe82603 BH |
6460 | dprintk("<-- %s\n", __func__); |
6461 | } | |
6462 | ||
6463 | static void nfs4_layoutreturn_release(void *calldata) | |
6464 | { | |
6465 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6466 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6467 | |
6468 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6469 | spin_lock(&lo->plh_inode->i_lock); |
6470 | if (lrp->res.lrs_present) | |
6471 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6472 | lo->plh_block_lgets--; | |
6473 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6474 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6475 | kfree(calldata); |
6476 | dprintk("<-- %s\n", __func__); | |
6477 | } | |
6478 | ||
6479 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6480 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6481 | .rpc_call_done = nfs4_layoutreturn_done, | |
6482 | .rpc_release = nfs4_layoutreturn_release, | |
6483 | }; | |
6484 | ||
6485 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6486 | { | |
6487 | struct rpc_task *task; | |
6488 | struct rpc_message msg = { | |
6489 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6490 | .rpc_argp = &lrp->args, | |
6491 | .rpc_resp = &lrp->res, | |
6492 | }; | |
6493 | struct rpc_task_setup task_setup_data = { | |
6494 | .rpc_client = lrp->clp->cl_rpcclient, | |
6495 | .rpc_message = &msg, | |
6496 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6497 | .callback_data = lrp, | |
6498 | }; | |
6499 | int status; | |
6500 | ||
6501 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6502 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6503 | task = rpc_run_task(&task_setup_data); |
6504 | if (IS_ERR(task)) | |
6505 | return PTR_ERR(task); | |
6506 | status = task->tk_status; | |
6507 | dprintk("<-- %s status=%d\n", __func__, status); | |
6508 | rpc_put_task(task); | |
6509 | return status; | |
6510 | } | |
6511 | ||
7f11d8d3 AA |
6512 | /* |
6513 | * Retrieve the list of Data Server devices from the MDS. | |
6514 | */ | |
6515 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6516 | const struct nfs_fh *fh, | |
6517 | struct pnfs_devicelist *devlist) | |
6518 | { | |
6519 | struct nfs4_getdevicelist_args args = { | |
6520 | .fh = fh, | |
6521 | .layoutclass = server->pnfs_curr_ld->id, | |
6522 | }; | |
6523 | struct nfs4_getdevicelist_res res = { | |
6524 | .devlist = devlist, | |
6525 | }; | |
6526 | struct rpc_message msg = { | |
6527 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6528 | .rpc_argp = &args, | |
6529 | .rpc_resp = &res, | |
6530 | }; | |
6531 | int status; | |
6532 | ||
6533 | dprintk("--> %s\n", __func__); | |
6534 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6535 | &res.seq_res, 0); | |
6536 | dprintk("<-- %s status=%d\n", __func__, status); | |
6537 | return status; | |
6538 | } | |
6539 | ||
6540 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6541 | const struct nfs_fh *fh, | |
6542 | struct pnfs_devicelist *devlist) | |
6543 | { | |
6544 | struct nfs4_exception exception = { }; | |
6545 | int err; | |
6546 | ||
6547 | do { | |
6548 | err = nfs4_handle_exception(server, | |
6549 | _nfs4_getdevicelist(server, fh, devlist), | |
6550 | &exception); | |
6551 | } while (exception.retry); | |
6552 | ||
6553 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6554 | err, devlist->num_devs); | |
6555 | ||
6556 | return err; | |
6557 | } | |
6558 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6559 | ||
b1f69b75 AA |
6560 | static int |
6561 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6562 | { | |
6563 | struct nfs4_getdeviceinfo_args args = { | |
6564 | .pdev = pdev, | |
6565 | }; | |
6566 | struct nfs4_getdeviceinfo_res res = { | |
6567 | .pdev = pdev, | |
6568 | }; | |
6569 | struct rpc_message msg = { | |
6570 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6571 | .rpc_argp = &args, | |
6572 | .rpc_resp = &res, | |
6573 | }; | |
6574 | int status; | |
6575 | ||
6576 | dprintk("--> %s\n", __func__); | |
7c513058 | 6577 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6578 | dprintk("<-- %s status=%d\n", __func__, status); |
6579 | ||
6580 | return status; | |
6581 | } | |
6582 | ||
6583 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6584 | { | |
6585 | struct nfs4_exception exception = { }; | |
6586 | int err; | |
6587 | ||
6588 | do { | |
6589 | err = nfs4_handle_exception(server, | |
6590 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6591 | &exception); | |
6592 | } while (exception.retry); | |
6593 | return err; | |
6594 | } | |
6595 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6596 | ||
863a3c6c AA |
6597 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6598 | { | |
6599 | struct nfs4_layoutcommit_data *data = calldata; | |
6600 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6601 | ||
6602 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6603 | &data->res.seq_res, task)) |
863a3c6c AA |
6604 | return; |
6605 | rpc_call_start(task); | |
6606 | } | |
6607 | ||
6608 | static void | |
6609 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6610 | { | |
6611 | struct nfs4_layoutcommit_data *data = calldata; | |
6612 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6613 | ||
6614 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6615 | return; | |
6616 | ||
6617 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6618 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6619 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6620 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6621 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6622 | task->tk_status = 0; |
e59d27e0 TM |
6623 | break; |
6624 | case 0: | |
863a3c6c AA |
6625 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6626 | data->res.fattr); | |
e59d27e0 TM |
6627 | break; |
6628 | default: | |
6629 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6630 | rpc_restart_call_prepare(task); | |
6631 | return; | |
6632 | } | |
6633 | } | |
863a3c6c AA |
6634 | } |
6635 | ||
6636 | static void nfs4_layoutcommit_release(void *calldata) | |
6637 | { | |
6638 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6639 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6640 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6641 | |
db29c089 | 6642 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6643 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6644 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6645 | list_del_init(&lseg->pls_lc_list); | |
6646 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6647 | &lseg->pls_flags)) | |
9369a431 | 6648 | pnfs_put_lseg(lseg); |
a9bae566 | 6649 | } |
92407e75 PT |
6650 | |
6651 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6652 | smp_mb__after_clear_bit(); | |
6653 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6654 | ||
863a3c6c AA |
6655 | put_rpccred(data->cred); |
6656 | kfree(data); | |
6657 | } | |
6658 | ||
6659 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6660 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6661 | .rpc_call_done = nfs4_layoutcommit_done, | |
6662 | .rpc_release = nfs4_layoutcommit_release, | |
6663 | }; | |
6664 | ||
6665 | int | |
ef311537 | 6666 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6667 | { |
6668 | struct rpc_message msg = { | |
6669 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6670 | .rpc_argp = &data->args, | |
6671 | .rpc_resp = &data->res, | |
6672 | .rpc_cred = data->cred, | |
6673 | }; | |
6674 | struct rpc_task_setup task_setup_data = { | |
6675 | .task = &data->task, | |
6676 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6677 | .rpc_message = &msg, | |
6678 | .callback_ops = &nfs4_layoutcommit_ops, | |
6679 | .callback_data = data, | |
6680 | .flags = RPC_TASK_ASYNC, | |
6681 | }; | |
6682 | struct rpc_task *task; | |
6683 | int status = 0; | |
6684 | ||
6685 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6686 | "lbw: %llu inode %lu\n", | |
6687 | data->task.tk_pid, sync, | |
6688 | data->args.lastbytewritten, | |
6689 | data->args.inode->i_ino); | |
6690 | ||
9d12b216 | 6691 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6692 | task = rpc_run_task(&task_setup_data); |
6693 | if (IS_ERR(task)) | |
6694 | return PTR_ERR(task); | |
ef311537 | 6695 | if (sync == false) |
863a3c6c AA |
6696 | goto out; |
6697 | status = nfs4_wait_for_completion_rpc_task(task); | |
6698 | if (status != 0) | |
6699 | goto out; | |
6700 | status = task->tk_status; | |
6701 | out: | |
6702 | dprintk("%s: status %d\n", __func__, status); | |
6703 | rpc_put_task(task); | |
6704 | return status; | |
6705 | } | |
fca78d6d BS |
6706 | |
6707 | static int | |
6708 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6709 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6710 | { | |
6711 | struct nfs41_secinfo_no_name_args args = { | |
6712 | .style = SECINFO_STYLE_CURRENT_FH, | |
6713 | }; | |
6714 | struct nfs4_secinfo_res res = { | |
6715 | .flavors = flavors, | |
6716 | }; | |
6717 | struct rpc_message msg = { | |
6718 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6719 | .rpc_argp = &args, | |
6720 | .rpc_resp = &res, | |
6721 | }; | |
6722 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6723 | } | |
6724 | ||
6725 | static int | |
6726 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6727 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6728 | { | |
6729 | struct nfs4_exception exception = { }; | |
6730 | int err; | |
6731 | do { | |
6732 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6733 | switch (err) { | |
6734 | case 0: | |
6735 | case -NFS4ERR_WRONGSEC: | |
6736 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6737 | goto out; |
fca78d6d BS |
6738 | default: |
6739 | err = nfs4_handle_exception(server, err, &exception); | |
6740 | } | |
6741 | } while (exception.retry); | |
05e9cfb4 | 6742 | out: |
fca78d6d BS |
6743 | return err; |
6744 | } | |
6745 | ||
6746 | static int | |
6747 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6748 | struct nfs_fsinfo *info) | |
6749 | { | |
6750 | int err; | |
6751 | struct page *page; | |
6752 | rpc_authflavor_t flavor; | |
6753 | struct nfs4_secinfo_flavors *flavors; | |
6754 | ||
6755 | page = alloc_page(GFP_KERNEL); | |
6756 | if (!page) { | |
6757 | err = -ENOMEM; | |
6758 | goto out; | |
6759 | } | |
6760 | ||
6761 | flavors = page_address(page); | |
6762 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6763 | ||
6764 | /* | |
6765 | * Fall back on "guess and check" method if | |
6766 | * the server doesn't support SECINFO_NO_NAME | |
6767 | */ | |
6768 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6769 | err = nfs4_find_root_sec(server, fhandle, info); | |
6770 | goto out_freepage; | |
6771 | } | |
6772 | if (err) | |
6773 | goto out_freepage; | |
6774 | ||
6775 | flavor = nfs_find_best_sec(flavors); | |
6776 | if (err == 0) | |
6777 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6778 | ||
6779 | out_freepage: | |
6780 | put_page(page); | |
6781 | if (err == -EACCES) | |
6782 | return -EPERM; | |
6783 | out: | |
6784 | return err; | |
6785 | } | |
1cab0652 BS |
6786 | |
6787 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6788 | { |
6789 | int status; | |
6790 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6791 | .stateid = stateid, |
7d974794 BS |
6792 | }; |
6793 | struct nfs41_test_stateid_res res; | |
6794 | struct rpc_message msg = { | |
6795 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6796 | .rpc_argp = &args, | |
6797 | .rpc_resp = &res, | |
6798 | }; | |
1cab0652 | 6799 | |
38527b15 | 6800 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6801 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 | 6802 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
6803 | if (status != NFS_OK) { |
6804 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6805 | return status; |
38527b15 CL |
6806 | } |
6807 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6808 | return -res.status; |
7d974794 BS |
6809 | } |
6810 | ||
38527b15 CL |
6811 | /** |
6812 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6813 | * | |
6814 | * @server: server / transport on which to perform the operation | |
6815 | * @stateid: state ID to test | |
6816 | * | |
6817 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6818 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6819 | * failed or the state ID is not currently valid. | |
6820 | */ | |
1cab0652 | 6821 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6822 | { |
6823 | struct nfs4_exception exception = { }; | |
6824 | int err; | |
6825 | do { | |
377e507d CL |
6826 | err = _nfs41_test_stateid(server, stateid); |
6827 | if (err != -NFS4ERR_DELAY) | |
6828 | break; | |
6829 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6830 | } while (exception.retry); |
6831 | return err; | |
6832 | } | |
9aeda35f | 6833 | |
1cab0652 | 6834 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6835 | { |
9aeda35f | 6836 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6837 | .stateid = stateid, |
9aeda35f BS |
6838 | }; |
6839 | struct nfs41_free_stateid_res res; | |
6840 | struct rpc_message msg = { | |
6841 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6842 | .rpc_argp = &args, | |
6843 | .rpc_resp = &res, | |
6844 | }; | |
38527b15 | 6845 | int status; |
9aeda35f | 6846 | |
38527b15 | 6847 | dprintk("NFS call free_stateid %p\n", stateid); |
9d12b216 | 6848 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
38527b15 | 6849 | status = nfs4_call_sync_sequence(server->client, server, &msg, |
377e507d | 6850 | &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
6851 | dprintk("NFS reply free_stateid: %d\n", status); |
6852 | return status; | |
9aeda35f BS |
6853 | } |
6854 | ||
38527b15 CL |
6855 | /** |
6856 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6857 | * | |
6858 | * @server: server / transport on which to perform the operation | |
6859 | * @stateid: state ID to release | |
6860 | * | |
6861 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6862 | * negative NFS4ERR value is returned. | |
6863 | */ | |
1cab0652 | 6864 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6865 | { |
6866 | struct nfs4_exception exception = { }; | |
6867 | int err; | |
6868 | do { | |
377e507d CL |
6869 | err = _nfs4_free_stateid(server, stateid); |
6870 | if (err != -NFS4ERR_DELAY) | |
6871 | break; | |
6872 | nfs4_handle_exception(server, err, &exception); | |
9aeda35f BS |
6873 | } while (exception.retry); |
6874 | return err; | |
6875 | } | |
36281caa TM |
6876 | |
6877 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6878 | const nfs4_stateid *s2) | |
6879 | { | |
2d2f24ad | 6880 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6881 | return false; |
6882 | ||
2d2f24ad | 6883 | if (s1->seqid == s2->seqid) |
36281caa | 6884 | return true; |
2d2f24ad | 6885 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6886 | return true; |
6887 | ||
6888 | return false; | |
6889 | } | |
6890 | ||
557134a3 AA |
6891 | #endif /* CONFIG_NFS_V4_1 */ |
6892 | ||
36281caa TM |
6893 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6894 | const nfs4_stateid *s2) | |
6895 | { | |
f597c537 | 6896 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6897 | } |
6898 | ||
6899 | ||
17280175 | 6900 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6901 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6902 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6903 | .recover_open = nfs4_open_reclaim, |
6904 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6905 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6906 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 6907 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
6908 | }; |
6909 | ||
591d71cb | 6910 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6911 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6912 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6913 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6914 | .recover_open = nfs4_open_reclaim, | |
6915 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6916 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6917 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6918 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 6919 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
6920 | }; |
6921 | #endif /* CONFIG_NFS_V4_1 */ | |
6922 | ||
17280175 | 6923 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6924 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6925 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6926 | .recover_open = nfs4_open_expired, | |
6927 | .recover_lock = nfs4_lock_expired, | |
6928 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6929 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6930 | }; |
6931 | ||
6932 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6933 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6934 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6935 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6936 | .recover_open = nfs41_open_expired, |
6937 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6938 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6939 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6940 | }; |
591d71cb | 6941 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6942 | |
17280175 | 6943 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6944 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6945 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6946 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6947 | }; |
6948 | ||
6949 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6950 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6951 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6952 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6953 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6954 | }; |
6955 | #endif | |
6956 | ||
97dc1359 TM |
6957 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6958 | .minor_version = 0, | |
6959 | .call_sync = _nfs4_call_sync, | |
36281caa | 6960 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6961 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6962 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6963 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6964 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6965 | }; |
6966 | ||
6967 | #if defined(CONFIG_NFS_V4_1) | |
6968 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6969 | .minor_version = 1, | |
6970 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 6971 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6972 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6973 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6974 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6975 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6976 | }; |
6977 | #endif | |
6978 | ||
97dc1359 TM |
6979 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6980 | [0] = &nfs_v4_0_minor_ops, | |
6981 | #if defined(CONFIG_NFS_V4_1) | |
6982 | [1] = &nfs_v4_1_minor_ops, | |
6983 | #endif | |
6984 | }; | |
6985 | ||
73a79706 BS |
6986 | const struct inode_operations nfs4_dir_inode_operations = { |
6987 | .create = nfs_create, | |
6988 | .lookup = nfs_lookup, | |
6989 | .atomic_open = nfs_atomic_open, | |
6990 | .link = nfs_link, | |
6991 | .unlink = nfs_unlink, | |
6992 | .symlink = nfs_symlink, | |
6993 | .mkdir = nfs_mkdir, | |
6994 | .rmdir = nfs_rmdir, | |
6995 | .mknod = nfs_mknod, | |
6996 | .rename = nfs_rename, | |
6997 | .permission = nfs_permission, | |
6998 | .getattr = nfs_getattr, | |
6999 | .setattr = nfs_setattr, | |
7000 | .getxattr = generic_getxattr, | |
7001 | .setxattr = generic_setxattr, | |
7002 | .listxattr = generic_listxattr, | |
7003 | .removexattr = generic_removexattr, | |
7004 | }; | |
7005 | ||
92e1d5be | 7006 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
7007 | .permission = nfs_permission, |
7008 | .getattr = nfs_getattr, | |
7009 | .setattr = nfs_setattr, | |
64c2ce8b AK |
7010 | .getxattr = generic_getxattr, |
7011 | .setxattr = generic_setxattr, | |
7012 | .listxattr = generic_listxattr, | |
7013 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
7014 | }; |
7015 | ||
509de811 | 7016 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
7017 | .version = 4, /* protocol version */ |
7018 | .dentry_ops = &nfs4_dentry_operations, | |
7019 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 7020 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 7021 | .file_ops = &nfs4_file_operations, |
1da177e4 | 7022 | .getroot = nfs4_proc_get_root, |
281cad46 | 7023 | .submount = nfs4_submount, |
ff9099f2 | 7024 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
7025 | .getattr = nfs4_proc_getattr, |
7026 | .setattr = nfs4_proc_setattr, | |
7027 | .lookup = nfs4_proc_lookup, | |
7028 | .access = nfs4_proc_access, | |
7029 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
7030 | .create = nfs4_proc_create, |
7031 | .remove = nfs4_proc_remove, | |
7032 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 7033 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
7034 | .unlink_done = nfs4_proc_unlink_done, |
7035 | .rename = nfs4_proc_rename, | |
d3d4152a | 7036 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 7037 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 7038 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
7039 | .link = nfs4_proc_link, |
7040 | .symlink = nfs4_proc_symlink, | |
7041 | .mkdir = nfs4_proc_mkdir, | |
7042 | .rmdir = nfs4_proc_remove, | |
7043 | .readdir = nfs4_proc_readdir, | |
7044 | .mknod = nfs4_proc_mknod, | |
7045 | .statfs = nfs4_proc_statfs, | |
7046 | .fsinfo = nfs4_proc_fsinfo, | |
7047 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 7048 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
7049 | .decode_dirent = nfs4_decode_dirent, |
7050 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 7051 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 7052 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 7053 | .read_done = nfs4_read_done, |
1da177e4 | 7054 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 7055 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 7056 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 7057 | .write_done = nfs4_write_done, |
1da177e4 | 7058 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 7059 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 7060 | .commit_done = nfs4_commit_done, |
1da177e4 | 7061 | .lock = nfs4_proc_lock, |
e50a1c2e | 7062 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 7063 | .close_context = nfs4_close_context, |
2b484297 | 7064 | .open_context = nfs4_atomic_open, |
011e2a7f | 7065 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 7066 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 7067 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 7068 | .init_client = nfs4_init_client, |
cdb7eced | 7069 | .free_client = nfs4_free_client, |
1179acc6 BS |
7070 | .create_server = nfs4_create_server, |
7071 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
7072 | }; |
7073 | ||
64c2ce8b AK |
7074 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
7075 | .prefix = XATTR_NAME_NFSV4_ACL, | |
7076 | .list = nfs4_xattr_list_nfs4_acl, | |
7077 | .get = nfs4_xattr_get_nfs4_acl, | |
7078 | .set = nfs4_xattr_set_nfs4_acl, | |
7079 | }; | |
7080 | ||
7081 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
7082 | &nfs4_xattr_nfs4_acl_handler, | |
7083 | NULL | |
7084 | }; | |
7085 | ||
1da177e4 LT |
7086 | /* |
7087 | * Local variables: | |
7088 | * c-basic-offset: 8 | |
7089 | * End: | |
7090 | */ |