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 | 1539 | if (task->tk_status == 0) { |
807d66d8 TM |
1540 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1541 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1542 | case S_IFREG: |
1543 | break; | |
1544 | case S_IFLNK: | |
24ac23ab | 1545 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1546 | break; |
1547 | case S_IFDIR: | |
24ac23ab | 1548 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1549 | break; |
1550 | default: | |
24ac23ab | 1551 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1552 | } |
6f926b5b | 1553 | } |
26e976a8 | 1554 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1555 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1556 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1557 | } |
3e309914 | 1558 | data->rpc_done = 1; |
24ac23ab | 1559 | } |
6f926b5b | 1560 | |
24ac23ab TM |
1561 | static void nfs4_open_release(void *calldata) |
1562 | { | |
1563 | struct nfs4_opendata *data = calldata; | |
1564 | struct nfs4_state *state = NULL; | |
1565 | ||
1566 | /* If this request hasn't been cancelled, do nothing */ | |
1567 | if (data->cancelled == 0) | |
1568 | goto out_free; | |
1569 | /* In case of error, no cleanup! */ | |
3e309914 | 1570 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1571 | goto out_free; |
1572 | /* In case we need an open_confirm, no cleanup! */ | |
1573 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1574 | goto out_free; | |
24ac23ab | 1575 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1576 | if (!IS_ERR(state)) |
643168c2 | 1577 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1578 | out_free: |
c6d00e63 | 1579 | nfs4_opendata_put(data); |
24ac23ab TM |
1580 | } |
1581 | ||
1582 | static const struct rpc_call_ops nfs4_open_ops = { | |
1583 | .rpc_call_prepare = nfs4_open_prepare, | |
1584 | .rpc_call_done = nfs4_open_done, | |
1585 | .rpc_release = nfs4_open_release, | |
1586 | }; | |
1587 | ||
b257957e AB |
1588 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1589 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1590 | .rpc_call_done = nfs4_open_done, | |
1591 | .rpc_release = nfs4_open_release, | |
1592 | }; | |
1593 | ||
1594 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1595 | { |
1596 | struct inode *dir = data->dir->d_inode; | |
1597 | struct nfs_server *server = NFS_SERVER(dir); | |
1598 | struct nfs_openargs *o_arg = &data->o_arg; | |
1599 | struct nfs_openres *o_res = &data->o_res; | |
1600 | struct rpc_task *task; | |
5138fde0 TM |
1601 | struct rpc_message msg = { |
1602 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1603 | .rpc_argp = o_arg, | |
1604 | .rpc_resp = o_res, | |
1605 | .rpc_cred = data->owner->so_cred, | |
1606 | }; | |
c970aa85 TM |
1607 | struct rpc_task_setup task_setup_data = { |
1608 | .rpc_client = server->client, | |
5138fde0 | 1609 | .rpc_message = &msg, |
c970aa85 TM |
1610 | .callback_ops = &nfs4_open_ops, |
1611 | .callback_data = data, | |
101070ca | 1612 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1613 | .flags = RPC_TASK_ASYNC, |
1614 | }; | |
24ac23ab TM |
1615 | int status; |
1616 | ||
9d12b216 | 1617 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1618 | kref_get(&data->kref); |
3e309914 TM |
1619 | data->rpc_done = 0; |
1620 | data->rpc_status = 0; | |
2ced46c2 | 1621 | data->cancelled = 0; |
b257957e AB |
1622 | if (isrecover) |
1623 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1624 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1625 | if (IS_ERR(task)) |
1626 | return PTR_ERR(task); | |
1627 | status = nfs4_wait_for_completion_rpc_task(task); | |
1628 | if (status != 0) { | |
1629 | data->cancelled = 1; | |
1630 | smp_wmb(); | |
1631 | } else | |
1632 | status = data->rpc_status; | |
1633 | rpc_put_task(task); | |
1634 | ||
1635 | return status; | |
1636 | } | |
1637 | ||
1638 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1639 | { | |
1640 | struct inode *dir = data->dir->d_inode; | |
1641 | struct nfs_openres *o_res = &data->o_res; | |
1642 | int status; | |
1643 | ||
1644 | status = nfs4_run_open_task(data, 1); | |
1645 | if (status != 0 || !data->rpc_done) | |
1646 | return status; | |
1647 | ||
6926afd1 TM |
1648 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1649 | ||
b257957e AB |
1650 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1651 | status = _nfs4_proc_open_confirm(data); | |
1652 | if (status != 0) | |
1653 | return status; | |
1654 | } | |
1655 | ||
1656 | return status; | |
1657 | } | |
1658 | ||
6168f62c WAA |
1659 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1660 | struct nfs4_opendata *opendata, | |
1661 | struct nfs4_state *state, fmode_t fmode) | |
1662 | { | |
1663 | struct nfs_access_entry cache; | |
1664 | u32 mask; | |
1665 | ||
1666 | /* access call failed or for some reason the server doesn't | |
1667 | * support any access modes -- defer access call until later */ | |
1668 | if (opendata->o_res.access_supported == 0) | |
1669 | return 0; | |
1670 | ||
1671 | mask = 0; | |
bbd3a8ee WAA |
1672 | /* don't check MAY_WRITE - a newly created file may not have |
1673 | * write mode bits, but POSIX allows the creating process to write */ | |
6168f62c WAA |
1674 | if (fmode & FMODE_READ) |
1675 | mask |= MAY_READ; | |
6168f62c WAA |
1676 | if (fmode & FMODE_EXEC) |
1677 | mask |= MAY_EXEC; | |
1678 | ||
1679 | cache.cred = cred; | |
1680 | cache.jiffies = jiffies; | |
1681 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1682 | nfs_access_add_cache(state->inode, &cache); | |
1683 | ||
bbd3a8ee | 1684 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1685 | return 0; |
1686 | ||
1687 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1688 | nfs4_close_state(state, fmode); | |
1689 | return -NFS4ERR_ACCESS; | |
1690 | } | |
1691 | ||
b257957e AB |
1692 | /* |
1693 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1694 | */ | |
1695 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1696 | { | |
1697 | struct inode *dir = data->dir->d_inode; | |
1698 | struct nfs_server *server = NFS_SERVER(dir); | |
1699 | struct nfs_openargs *o_arg = &data->o_arg; | |
1700 | struct nfs_openres *o_res = &data->o_res; | |
1701 | int status; | |
1702 | ||
1703 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1704 | if (!data->rpc_done) |
1705 | return status; | |
1706 | if (status != 0) { | |
1707 | if (status == -NFS4ERR_BADNAME && | |
1708 | !(o_arg->open_flags & O_CREAT)) | |
1709 | return -ENOENT; | |
24ac23ab | 1710 | return status; |
08ef7bd3 | 1711 | } |
24ac23ab | 1712 | |
6926afd1 TM |
1713 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1714 | ||
90ff0c54 | 1715 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1716 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1717 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1718 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1719 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1720 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1721 | if (status != 0) |
24ac23ab | 1722 | return status; |
1da177e4 LT |
1723 | } |
1724 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1725 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1726 | return 0; |
1da177e4 LT |
1727 | } |
1728 | ||
d83217c1 | 1729 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1730 | { |
a78cb57a | 1731 | unsigned int loop; |
6b30954e | 1732 | int ret; |
58d9714a | 1733 | |
a78cb57a | 1734 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1735 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1736 | if (ret != 0) |
a78cb57a | 1737 | break; |
e598d843 TM |
1738 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1739 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1740 | break; |
0400a6b0 | 1741 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1742 | ret = -EIO; |
6b30954e | 1743 | } |
a78cb57a | 1744 | return ret; |
58d9714a TM |
1745 | } |
1746 | ||
d83217c1 AA |
1747 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1748 | { | |
1749 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1750 | } | |
1751 | ||
1da177e4 LT |
1752 | /* |
1753 | * OPEN_EXPIRED: | |
1754 | * reclaim state on the server after a network partition. | |
1755 | * Assumes caller holds the appropriate lock | |
1756 | */ | |
539cd03a | 1757 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1758 | { |
e56e0b78 | 1759 | struct nfs4_opendata *opendata; |
864472e9 | 1760 | int ret; |
1da177e4 | 1761 | |
6f220ed5 TM |
1762 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1763 | if (IS_ERR(opendata)) | |
1764 | return PTR_ERR(opendata); | |
864472e9 | 1765 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1766 | if (ret == -ESTALE) |
3d4ff43d | 1767 | d_drop(ctx->dentry); |
c6d00e63 | 1768 | nfs4_opendata_put(opendata); |
864472e9 | 1769 | return ret; |
1da177e4 LT |
1770 | } |
1771 | ||
a9ed2e25 | 1772 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1773 | { |
539cd03a | 1774 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1775 | struct nfs4_exception exception = { }; |
1776 | int err; | |
1777 | ||
1778 | do { | |
539cd03a | 1779 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1780 | switch (err) { |
1781 | default: | |
1782 | goto out; | |
1783 | case -NFS4ERR_GRACE: | |
1784 | case -NFS4ERR_DELAY: | |
1785 | nfs4_handle_exception(server, err, &exception); | |
1786 | err = 0; | |
1787 | } | |
202b50dc | 1788 | } while (exception.retry); |
a9ed2e25 | 1789 | out: |
202b50dc TM |
1790 | return err; |
1791 | } | |
1792 | ||
1da177e4 LT |
1793 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1794 | { | |
1da177e4 | 1795 | struct nfs_open_context *ctx; |
864472e9 | 1796 | int ret; |
1da177e4 | 1797 | |
864472e9 TM |
1798 | ctx = nfs4_state_find_open_context(state); |
1799 | if (IS_ERR(ctx)) | |
1800 | return PTR_ERR(ctx); | |
539cd03a | 1801 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1802 | put_nfs_open_context(ctx); |
1803 | return ret; | |
1da177e4 LT |
1804 | } |
1805 | ||
f062eb6c | 1806 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1807 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1808 | { |
f062eb6c | 1809 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd CL |
1810 | nfs4_stateid *stateid = &state->stateid; |
1811 | int status; | |
1812 | ||
1813 | /* If a state reset has been done, test_stateid is unneeded */ | |
1814 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1815 | return; | |
1816 | ||
1817 | status = nfs41_test_stateid(server, stateid); | |
1818 | if (status != NFS_OK) { | |
1819 | /* Free the stateid unless the server explicitly | |
1820 | * informs us the stateid is unrecognized. */ | |
1821 | if (status != -NFS4ERR_BAD_STATEID) | |
1822 | nfs41_free_stateid(server, stateid); | |
6938867e | 1823 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1824 | |
6938867e BS |
1825 | write_seqlock(&state->seqlock); |
1826 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1827 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1828 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1829 | } | |
1830 | } | |
1831 | ||
1832 | /** | |
1833 | * nfs41_check_open_stateid - possibly free an open stateid | |
1834 | * | |
1835 | * @state: NFSv4 state for an inode | |
1836 | * | |
1837 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1838 | * Otherwise a negative NFS4ERR value is returned. | |
1839 | */ | |
1840 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1841 | { | |
1842 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1843 | nfs4_stateid *stateid = &state->open_stateid; |
3e60ffdd CL |
1844 | int status; |
1845 | ||
1846 | /* If a state reset has been done, test_stateid is unneeded */ | |
1847 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1848 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1849 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1850 | return -NFS4ERR_BAD_STATEID; | |
1851 | ||
1852 | status = nfs41_test_stateid(server, stateid); | |
1853 | if (status != NFS_OK) { | |
1854 | /* Free the stateid unless the server explicitly | |
1855 | * informs us the stateid is unrecognized. */ | |
1856 | if (status != -NFS4ERR_BAD_STATEID) | |
1857 | nfs41_free_stateid(server, stateid); | |
1858 | ||
1859 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1860 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1861 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
b01dd1d8 BS |
1862 | } |
1863 | return status; | |
1864 | } | |
1865 | ||
1866 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1867 | { | |
eb64cf96 | 1868 | int status; |
b01dd1d8 | 1869 | |
3e60ffdd CL |
1870 | nfs41_clear_delegation_stateid(state); |
1871 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
1872 | if (status != NFS_OK) |
1873 | status = nfs4_open_expired(sp, state); | |
1874 | return status; | |
f062eb6c BS |
1875 | } |
1876 | #endif | |
1877 | ||
aa53ed54 JL |
1878 | /* |
1879 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1880 | * fields corresponding to attributes that were used to store the verifier. | |
1881 | * Make sure we clobber those fields in the later setattr call | |
1882 | */ | |
1883 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1884 | { | |
1885 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1886 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1887 | sattr->ia_valid |= ATTR_ATIME; | |
1888 | ||
1889 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1890 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1891 | sattr->ia_valid |= ATTR_MTIME; | |
1892 | } | |
1893 | ||
1da177e4 | 1894 | /* |
24ac23ab | 1895 | * Returns a referenced nfs4_state |
1da177e4 | 1896 | */ |
82be417a AA |
1897 | static int _nfs4_do_open(struct inode *dir, |
1898 | struct dentry *dentry, | |
1899 | fmode_t fmode, | |
1900 | int flags, | |
1901 | struct iattr *sattr, | |
1902 | struct rpc_cred *cred, | |
1903 | struct nfs4_state **res, | |
1904 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1905 | { |
1906 | struct nfs4_state_owner *sp; | |
1907 | struct nfs4_state *state = NULL; | |
1908 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1909 | struct nfs4_opendata *opendata; |
aac00a8d | 1910 | int status; |
1da177e4 LT |
1911 | |
1912 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1913 | status = -ENOMEM; |
d1e284d5 TM |
1914 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1915 | if (sp == NULL) { | |
1da177e4 LT |
1916 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1917 | goto out_err; | |
1918 | } | |
58d9714a TM |
1919 | status = nfs4_recover_expired_lease(server); |
1920 | if (status != 0) | |
b4454fe1 | 1921 | goto err_put_state_owner; |
82a2c1b7 AV |
1922 | if (dentry->d_inode != NULL) |
1923 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1924 | status = -ENOMEM; |
82a2c1b7 | 1925 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1926 | if (opendata == NULL) |
95d35cb4 | 1927 | goto err_put_state_owner; |
1da177e4 | 1928 | |
82be417a AA |
1929 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
1930 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
1931 | if (!opendata->f_attr.mdsthreshold) | |
1932 | goto err_opendata_put; | |
1549210f | 1933 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 1934 | } |
82a2c1b7 AV |
1935 | if (dentry->d_inode != NULL) |
1936 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1937 | |
24ac23ab | 1938 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1939 | if (status != 0) |
c6d00e63 | 1940 | goto err_opendata_put; |
1da177e4 | 1941 | |
24ac23ab | 1942 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1943 | status = PTR_ERR(state); |
1944 | if (IS_ERR(state)) | |
c6d00e63 | 1945 | goto err_opendata_put; |
0df5dd4a | 1946 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1947 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e | 1948 | |
6168f62c WAA |
1949 | status = nfs4_opendata_access(cred, opendata, state, fmode); |
1950 | if (status != 0) | |
1951 | goto err_opendata_put; | |
1952 | ||
0ab64e0e TM |
1953 | if (opendata->o_arg.open_flags & O_EXCL) { |
1954 | nfs4_exclusive_attrset(opendata, sattr); | |
1955 | ||
1956 | nfs_fattr_init(opendata->o_res.f_attr); | |
1957 | status = nfs4_do_setattr(state->inode, cred, | |
1958 | opendata->o_res.f_attr, sattr, | |
1959 | state); | |
1960 | if (status == 0) | |
1961 | nfs_setattr_update_inode(state->inode, sattr); | |
1962 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1963 | } | |
82be417a AA |
1964 | |
1965 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
1966 | *ctx_th = opendata->f_attr.mdsthreshold; | |
1967 | else | |
1968 | kfree(opendata->f_attr.mdsthreshold); | |
1969 | opendata->f_attr.mdsthreshold = NULL; | |
1970 | ||
c6d00e63 | 1971 | nfs4_opendata_put(opendata); |
1da177e4 | 1972 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1973 | *res = state; |
1974 | return 0; | |
c6d00e63 | 1975 | err_opendata_put: |
82be417a | 1976 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 1977 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
1978 | err_put_state_owner: |
1979 | nfs4_put_state_owner(sp); | |
1da177e4 | 1980 | out_err: |
1da177e4 LT |
1981 | *res = NULL; |
1982 | return status; | |
1983 | } | |
1984 | ||
1985 | ||
82be417a AA |
1986 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
1987 | struct dentry *dentry, | |
1988 | fmode_t fmode, | |
1989 | int flags, | |
1990 | struct iattr *sattr, | |
1991 | struct rpc_cred *cred, | |
1992 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1993 | { |
1994 | struct nfs4_exception exception = { }; | |
1995 | struct nfs4_state *res; | |
1996 | int status; | |
1997 | ||
6168f62c | 1998 | fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC; |
1da177e4 | 1999 | do { |
82be417a AA |
2000 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
2001 | &res, ctx_th); | |
1da177e4 LT |
2002 | if (status == 0) |
2003 | break; | |
2004 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2005 | * book-keeping w.r.t. state-changing operations | |
2006 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2007 | * It is actually a sign of a bug on the client or on the server. | |
2008 | * | |
2009 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2010 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2011 | * have unhashed the old state_owner for us, and that we can |
2012 | * therefore safely retry using a new one. We should still warn | |
2013 | * the user though... | |
2014 | */ | |
2015 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2016 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2017 | " returned a bad sequence-id error!\n", |
2018 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2019 | exception.retry = 1; |
2020 | continue; | |
2021 | } | |
550f5747 TM |
2022 | /* |
2023 | * BAD_STATEID on OPEN means that the server cancelled our | |
2024 | * state before it received the OPEN_CONFIRM. | |
2025 | * Recover by retrying the request as per the discussion | |
2026 | * on Page 181 of RFC3530. | |
2027 | */ | |
2028 | if (status == -NFS4ERR_BAD_STATEID) { | |
2029 | exception.retry = 1; | |
2030 | continue; | |
2031 | } | |
aac00a8d TM |
2032 | if (status == -EAGAIN) { |
2033 | /* We must have found a delegation */ | |
2034 | exception.retry = 1; | |
2035 | continue; | |
2036 | } | |
1da177e4 LT |
2037 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
2038 | status, &exception)); | |
2039 | } while (exception.retry); | |
2040 | return res; | |
2041 | } | |
2042 | ||
659bfcd6 TM |
2043 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2044 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2045 | struct nfs4_state *state) | |
1da177e4 | 2046 | { |
3e4f6290 | 2047 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2048 | struct nfs_setattrargs arg = { |
3e4f6290 | 2049 | .fh = NFS_FH(inode), |
1da177e4 LT |
2050 | .iap = sattr, |
2051 | .server = server, | |
2052 | .bitmask = server->attr_bitmask, | |
2053 | }; | |
2054 | struct nfs_setattrres res = { | |
2055 | .fattr = fattr, | |
2056 | .server = server, | |
2057 | }; | |
2058 | struct rpc_message msg = { | |
659bfcd6 TM |
2059 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2060 | .rpc_argp = &arg, | |
2061 | .rpc_resp = &res, | |
2062 | .rpc_cred = cred, | |
1da177e4 | 2063 | }; |
26e976a8 | 2064 | unsigned long timestamp = jiffies; |
65e4308d | 2065 | int status; |
1da177e4 | 2066 | |
0e574af1 | 2067 | nfs_fattr_init(fattr); |
1da177e4 | 2068 | |
4fc8796d | 2069 | if (state != NULL) { |
2a369153 TM |
2070 | struct nfs_lockowner lockowner = { |
2071 | .l_owner = current->files, | |
2072 | .l_pid = current->tgid, | |
2073 | }; | |
4fc8796d | 2074 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2075 | &lockowner); |
4fc8796d TM |
2076 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, |
2077 | FMODE_WRITE)) { | |
3e4f6290 | 2078 | /* Use that stateid */ |
08e9eac4 | 2079 | } else |
f597c537 | 2080 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2081 | |
7c513058 | 2082 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2083 | if (status == 0 && state != NULL) |
2084 | renew_lease(server, timestamp); | |
65e4308d | 2085 | return status; |
1da177e4 LT |
2086 | } |
2087 | ||
659bfcd6 TM |
2088 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2089 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2090 | struct nfs4_state *state) | |
1da177e4 | 2091 | { |
3e4f6290 | 2092 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2093 | struct nfs4_exception exception = { |
2094 | .state = state, | |
3114ea7a | 2095 | .inode = inode, |
a1d0b5ee | 2096 | }; |
1da177e4 LT |
2097 | int err; |
2098 | do { | |
451146be TM |
2099 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2100 | switch (err) { | |
2101 | case -NFS4ERR_OPENMODE: | |
2102 | if (state && !(state->state & FMODE_WRITE)) { | |
2103 | err = -EBADF; | |
2104 | if (sattr->ia_valid & ATTR_OPEN) | |
2105 | err = -EACCES; | |
2106 | goto out; | |
2107 | } | |
2108 | } | |
2109 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2110 | } while (exception.retry); |
451146be | 2111 | out: |
1da177e4 LT |
2112 | return err; |
2113 | } | |
2114 | ||
2115 | struct nfs4_closedata { | |
2116 | struct inode *inode; | |
2117 | struct nfs4_state *state; | |
2118 | struct nfs_closeargs arg; | |
2119 | struct nfs_closeres res; | |
516a6af6 | 2120 | struct nfs_fattr fattr; |
26e976a8 | 2121 | unsigned long timestamp; |
f7e8917a FI |
2122 | bool roc; |
2123 | u32 roc_barrier; | |
1da177e4 LT |
2124 | }; |
2125 | ||
963d8fe5 | 2126 | static void nfs4_free_closedata(void *data) |
9512135d | 2127 | { |
963d8fe5 TM |
2128 | struct nfs4_closedata *calldata = data; |
2129 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2130 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2131 | |
f7e8917a FI |
2132 | if (calldata->roc) |
2133 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2134 | nfs4_put_open_state(calldata->state); |
2135 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2136 | nfs4_put_state_owner(sp); |
643168c2 | 2137 | nfs_sb_deactive(sb); |
9512135d TM |
2138 | kfree(calldata); |
2139 | } | |
2140 | ||
88069f77 TM |
2141 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2142 | fmode_t fmode) | |
2143 | { | |
2144 | spin_lock(&state->owner->so_lock); | |
2145 | if (!(fmode & FMODE_READ)) | |
2146 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2147 | if (!(fmode & FMODE_WRITE)) | |
2148 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2149 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2150 | spin_unlock(&state->owner->so_lock); | |
2151 | } | |
2152 | ||
963d8fe5 | 2153 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2154 | { |
963d8fe5 | 2155 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2156 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2157 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2158 | ||
a3ca5651 | 2159 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2160 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2161 | return; | |
1da177e4 LT |
2162 | /* hmm. we are done with the inode, and in the process of freeing |
2163 | * the state_owner. we keep this around to process errors | |
2164 | */ | |
1da177e4 LT |
2165 | switch (task->tk_status) { |
2166 | case 0: | |
f7e8917a FI |
2167 | if (calldata->roc) |
2168 | pnfs_roc_set_barrier(state->inode, | |
2169 | calldata->roc_barrier); | |
45328c35 | 2170 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2171 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2172 | nfs4_close_clear_stateid_flags(state, |
2173 | calldata->arg.fmode); | |
1da177e4 LT |
2174 | break; |
2175 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2176 | case -NFS4ERR_OLD_STATEID: |
2177 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2178 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2179 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2180 | break; |
1da177e4 | 2181 | default: |
72211dbe TM |
2182 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2183 | rpc_restart_call_prepare(task); | |
1da177e4 | 2184 | } |
72211dbe | 2185 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2186 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2187 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2188 | } |
2189 | ||
4ce70ada | 2190 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2191 | { |
4ce70ada | 2192 | struct nfs4_closedata *calldata = data; |
9512135d | 2193 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2194 | struct inode *inode = calldata->inode; |
88069f77 | 2195 | int call_close = 0; |
9512135d | 2196 | |
a3ca5651 | 2197 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2198 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2199 | return; |
003707c7 | 2200 | |
88069f77 TM |
2201 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2202 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2203 | spin_lock(&state->owner->so_lock); |
003707c7 | 2204 | /* Calculate the change in open mode */ |
e7616923 | 2205 | if (state->n_rdwr == 0) { |
003707c7 | 2206 | if (state->n_rdonly == 0) { |
88069f77 TM |
2207 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2208 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2209 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2210 | } |
2211 | if (state->n_wronly == 0) { | |
88069f77 TM |
2212 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2213 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2214 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2215 | } |
e7616923 | 2216 | } |
4cecb76f | 2217 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2218 | |
2219 | if (!call_close) { | |
963d8fe5 TM |
2220 | /* Note: exit _without_ calling nfs4_close_done */ |
2221 | task->tk_action = NULL; | |
a3ca5651 | 2222 | goto out; |
9512135d | 2223 | } |
88069f77 | 2224 | |
f7e8917a | 2225 | if (calldata->arg.fmode == 0) { |
88069f77 | 2226 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2227 | if (calldata->roc && |
7fdab069 | 2228 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) |
a3ca5651 | 2229 | goto out; |
f7e8917a | 2230 | } |
88069f77 | 2231 | |
516a6af6 | 2232 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2233 | calldata->timestamp = jiffies; |
7fdab069 | 2234 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2235 | &calldata->arg.seq_args, |
2236 | &calldata->res.seq_res, | |
2237 | task)) | |
a3ca5651 | 2238 | goto out; |
5138fde0 | 2239 | rpc_call_start(task); |
a3ca5651 CL |
2240 | out: |
2241 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2242 | } |
2243 | ||
963d8fe5 | 2244 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2245 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2246 | .rpc_call_done = nfs4_close_done, |
2247 | .rpc_release = nfs4_free_closedata, | |
2248 | }; | |
2249 | ||
1da177e4 LT |
2250 | /* |
2251 | * It is possible for data to be read/written from a mem-mapped file | |
2252 | * after the sys_close call (which hits the vfs layer as a flush). | |
2253 | * This means that we can't safely call nfsv4 close on a file until | |
2254 | * the inode is cleared. This in turn means that we are not good | |
2255 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2256 | * share state even when we are done with one of the three share | |
2257 | * stateid's in the inode. | |
2258 | * | |
2259 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2260 | */ | |
1f7977c1 | 2261 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2262 | { |
4a35bd41 | 2263 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2264 | struct nfs4_closedata *calldata; |
b39e625b TM |
2265 | struct nfs4_state_owner *sp = state->owner; |
2266 | struct rpc_task *task; | |
5138fde0 TM |
2267 | struct rpc_message msg = { |
2268 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2269 | .rpc_cred = state->owner->so_cred, | |
2270 | }; | |
c970aa85 TM |
2271 | struct rpc_task_setup task_setup_data = { |
2272 | .rpc_client = server->client, | |
5138fde0 | 2273 | .rpc_message = &msg, |
c970aa85 | 2274 | .callback_ops = &nfs4_close_ops, |
101070ca | 2275 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2276 | .flags = RPC_TASK_ASYNC, |
2277 | }; | |
9512135d | 2278 | int status = -ENOMEM; |
1da177e4 | 2279 | |
8535b2be | 2280 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2281 | if (calldata == NULL) |
9512135d | 2282 | goto out; |
9d12b216 | 2283 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2284 | calldata->inode = state->inode; |
1da177e4 | 2285 | calldata->state = state; |
4a35bd41 | 2286 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2287 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2288 | /* Serialization for the sequence id */ |
8535b2be | 2289 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2290 | if (calldata->arg.seqid == NULL) |
2291 | goto out_free_calldata; | |
dc0b027d | 2292 | calldata->arg.fmode = 0; |
a65318bf | 2293 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2294 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2295 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2296 | calldata->res.server = server; |
1f7977c1 | 2297 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2298 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2299 | |
1174dd1f TM |
2300 | msg.rpc_argp = &calldata->arg; |
2301 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2302 | task_setup_data.callback_data = calldata; |
2303 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2304 | if (IS_ERR(task)) |
2305 | return PTR_ERR(task); | |
a49c3c77 TM |
2306 | status = 0; |
2307 | if (wait) | |
2308 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2309 | rpc_put_task(task); |
a49c3c77 | 2310 | return status; |
9512135d TM |
2311 | out_free_calldata: |
2312 | kfree(calldata); | |
2313 | out: | |
b39e625b TM |
2314 | nfs4_put_open_state(state); |
2315 | nfs4_put_state_owner(sp); | |
9512135d | 2316 | return status; |
1da177e4 LT |
2317 | } |
2318 | ||
2b484297 | 2319 | static struct inode * |
cd9a1c0e | 2320 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2321 | { |
1da177e4 | 2322 | struct nfs4_state *state; |
1da177e4 | 2323 | |
565277f6 | 2324 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2325 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2326 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2327 | if (IS_ERR(state)) |
2328 | return ERR_CAST(state); | |
cd9a1c0e | 2329 | ctx->state = state; |
f46e0bd3 | 2330 | return igrab(state->inode); |
1da177e4 LT |
2331 | } |
2332 | ||
1185a552 | 2333 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2334 | { |
2335 | if (ctx->state == NULL) | |
2336 | return; | |
2337 | if (is_sync) | |
643168c2 | 2338 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2339 | else |
643168c2 | 2340 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2341 | } |
1da177e4 LT |
2342 | |
2343 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2344 | { | |
43652ad5 BH |
2345 | struct nfs4_server_caps_arg args = { |
2346 | .fhandle = fhandle, | |
2347 | }; | |
1da177e4 LT |
2348 | struct nfs4_server_caps_res res = {}; |
2349 | struct rpc_message msg = { | |
2350 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2351 | .rpc_argp = &args, |
1da177e4 LT |
2352 | .rpc_resp = &res, |
2353 | }; | |
2354 | int status; | |
2355 | ||
7c513058 | 2356 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2357 | if (status == 0) { |
2358 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2359 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2360 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2361 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2362 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2363 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2364 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2365 | server->caps |= NFS_CAP_ACLS; | |
2366 | if (res.has_links != 0) | |
2367 | server->caps |= NFS_CAP_HARDLINKS; | |
2368 | if (res.has_symlinks != 0) | |
2369 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2370 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2371 | server->caps |= NFS_CAP_FILEID; | |
2372 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2373 | server->caps |= NFS_CAP_MODE; | |
2374 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2375 | server->caps |= NFS_CAP_NLINK; | |
2376 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2377 | server->caps |= NFS_CAP_OWNER; | |
2378 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2379 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2380 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2381 | server->caps |= NFS_CAP_ATIME; | |
2382 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2383 | server->caps |= NFS_CAP_CTIME; | |
2384 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2385 | server->caps |= NFS_CAP_MTIME; | |
2386 | ||
a65318bf TM |
2387 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2388 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2389 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2390 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2391 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2392 | } |
cccef3b9 | 2393 | |
1da177e4 LT |
2394 | return status; |
2395 | } | |
2396 | ||
55a97593 | 2397 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2398 | { |
2399 | struct nfs4_exception exception = { }; | |
2400 | int err; | |
2401 | do { | |
2402 | err = nfs4_handle_exception(server, | |
2403 | _nfs4_server_capabilities(server, fhandle), | |
2404 | &exception); | |
2405 | } while (exception.retry); | |
2406 | return err; | |
2407 | } | |
2408 | ||
2409 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2410 | struct nfs_fsinfo *info) | |
2411 | { | |
1da177e4 LT |
2412 | struct nfs4_lookup_root_arg args = { |
2413 | .bitmask = nfs4_fattr_bitmap, | |
2414 | }; | |
2415 | struct nfs4_lookup_res res = { | |
2416 | .server = server, | |
0e574af1 | 2417 | .fattr = info->fattr, |
1da177e4 LT |
2418 | .fh = fhandle, |
2419 | }; | |
2420 | struct rpc_message msg = { | |
2421 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2422 | .rpc_argp = &args, | |
2423 | .rpc_resp = &res, | |
2424 | }; | |
008f55d0 | 2425 | |
0e574af1 | 2426 | nfs_fattr_init(info->fattr); |
7c513058 | 2427 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2428 | } |
2429 | ||
2430 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2431 | struct nfs_fsinfo *info) | |
2432 | { | |
2433 | struct nfs4_exception exception = { }; | |
2434 | int err; | |
2435 | do { | |
fb8a5ba8 BS |
2436 | err = _nfs4_lookup_root(server, fhandle, info); |
2437 | switch (err) { | |
2438 | case 0: | |
2439 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2440 | goto out; |
fb8a5ba8 BS |
2441 | default: |
2442 | err = nfs4_handle_exception(server, err, &exception); | |
2443 | } | |
1da177e4 | 2444 | } while (exception.retry); |
05e9cfb4 | 2445 | out: |
1da177e4 LT |
2446 | return err; |
2447 | } | |
2448 | ||
8f70e95f BS |
2449 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2450 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2451 | { | |
2452 | struct rpc_auth *auth; | |
2453 | int ret; | |
2454 | ||
2455 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2456 | if (IS_ERR(auth)) { |
8f70e95f BS |
2457 | ret = -EIO; |
2458 | goto out; | |
2459 | } | |
2460 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2461 | out: |
2462 | return ret; | |
2463 | } | |
2464 | ||
801a16dc | 2465 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2466 | struct nfs_fsinfo *info) |
1da177e4 | 2467 | { |
8f70e95f | 2468 | int i, len, status = 0; |
0fabee24 | 2469 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2470 | |
6a1a1e34 CL |
2471 | len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array)); |
2472 | BUG_ON(len < 0); | |
8f70e95f BS |
2473 | |
2474 | for (i = 0; i < len; i++) { | |
6a1a1e34 CL |
2475 | /* AUTH_UNIX is the default flavor if none was specified, |
2476 | * thus has already been tried. */ | |
2477 | if (flav_array[i] == RPC_AUTH_UNIX) | |
2478 | continue; | |
2479 | ||
8f70e95f | 2480 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2481 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2482 | continue; |
2483 | break; | |
8f70e95f | 2484 | } |
fb8a5ba8 BS |
2485 | /* |
2486 | * -EACCESS could mean that the user doesn't have correct permissions | |
2487 | * to access the mount. It could also mean that we tried to mount | |
2488 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2489 | * existing mount programs don't handle -EACCES very well so it should | |
2490 | * be mapped to -EPERM instead. | |
2491 | */ | |
2492 | if (status == -EACCES) | |
2493 | status = -EPERM; | |
801a16dc BS |
2494 | return status; |
2495 | } | |
2496 | ||
2497 | /* | |
2498 | * get the file handle for the "/" directory on the server | |
2499 | */ | |
3028eb2b BS |
2500 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2501 | struct nfs_fsinfo *info) | |
801a16dc | 2502 | { |
fca78d6d | 2503 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2504 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2505 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2506 | /* | |
2507 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2508 | * by nfs4_map_errors() as this function exits. | |
2509 | */ | |
fca78d6d | 2510 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2511 | if (status == 0) |
2512 | status = nfs4_server_capabilities(server, fhandle); | |
2513 | if (status == 0) | |
2514 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2515 | return nfs4_map_errors(status); |
1da177e4 LT |
2516 | } |
2517 | ||
bae36241 BS |
2518 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2519 | struct nfs_fsinfo *info) | |
2520 | { | |
2521 | int error; | |
2522 | struct nfs_fattr *fattr = info->fattr; | |
2523 | ||
2524 | error = nfs4_server_capabilities(server, mntfh); | |
2525 | if (error < 0) { | |
2526 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2527 | return error; | |
2528 | } | |
2529 | ||
2530 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2531 | if (error < 0) { | |
2532 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2533 | return error; | |
2534 | } | |
2535 | ||
2536 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2537 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2538 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2539 | ||
2540 | return error; | |
2541 | } | |
2542 | ||
6b97fd3d MN |
2543 | /* |
2544 | * Get locations and (maybe) other attributes of a referral. | |
2545 | * Note that we'll actually follow the referral later when | |
2546 | * we detect fsid mismatch in inode revalidation | |
2547 | */ | |
f05d147f BS |
2548 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2549 | const struct qstr *name, struct nfs_fattr *fattr, | |
2550 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2551 | { |
2552 | int status = -ENOMEM; | |
2553 | struct page *page = NULL; | |
2554 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2555 | |
2556 | page = alloc_page(GFP_KERNEL); | |
2557 | if (page == NULL) | |
2558 | goto out; | |
2559 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2560 | if (locations == NULL) | |
2561 | goto out; | |
2562 | ||
f05d147f | 2563 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2564 | if (status != 0) |
2565 | goto out; | |
2566 | /* Make sure server returned a different fsid for the referral */ | |
2567 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2568 | dprintk("%s: server did not return a different fsid for" |
2569 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2570 | status = -EIO; |
2571 | goto out; | |
2572 | } | |
533eb461 AA |
2573 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2574 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2575 | |
533eb461 | 2576 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2577 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2578 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2579 | out: | |
2580 | if (page) | |
2581 | __free_page(page); | |
5d7ca35a | 2582 | kfree(locations); |
6b97fd3d MN |
2583 | return status; |
2584 | } | |
2585 | ||
1da177e4 LT |
2586 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2587 | { | |
2588 | struct nfs4_getattr_arg args = { | |
2589 | .fh = fhandle, | |
2590 | .bitmask = server->attr_bitmask, | |
2591 | }; | |
2592 | struct nfs4_getattr_res res = { | |
2593 | .fattr = fattr, | |
2594 | .server = server, | |
2595 | }; | |
2596 | struct rpc_message msg = { | |
2597 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2598 | .rpc_argp = &args, | |
2599 | .rpc_resp = &res, | |
2600 | }; | |
2601 | ||
0e574af1 | 2602 | nfs_fattr_init(fattr); |
7c513058 | 2603 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2604 | } |
2605 | ||
2606 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2607 | { | |
2608 | struct nfs4_exception exception = { }; | |
2609 | int err; | |
2610 | do { | |
2611 | err = nfs4_handle_exception(server, | |
2612 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2613 | &exception); | |
2614 | } while (exception.retry); | |
2615 | return err; | |
2616 | } | |
2617 | ||
2618 | /* | |
2619 | * The file is not closed if it is opened due to the a request to change | |
2620 | * the size of the file. The open call will not be needed once the | |
2621 | * VFS layer lookup-intents are implemented. | |
2622 | * | |
2623 | * Close is called when the inode is destroyed. | |
2624 | * If we haven't opened the file for O_WRONLY, we | |
2625 | * need to in the size_change case to obtain a stateid. | |
2626 | * | |
2627 | * Got race? | |
2628 | * Because OPEN is always done by name in nfsv4, it is | |
2629 | * possible that we opened a different file by the same | |
2630 | * name. We can recognize this race condition, but we | |
2631 | * can't do anything about it besides returning an error. | |
2632 | * | |
2633 | * This will be fixed with VFS changes (lookup-intent). | |
2634 | */ | |
2635 | static int | |
2636 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2637 | struct iattr *sattr) | |
2638 | { | |
08e9eac4 | 2639 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2640 | struct rpc_cred *cred = NULL; |
d530838b | 2641 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2642 | int status; |
2643 | ||
8a1636c4 BH |
2644 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2645 | pnfs_return_layout(inode); | |
2646 | ||
0e574af1 | 2647 | nfs_fattr_init(fattr); |
1da177e4 | 2648 | |
2669940d AA |
2649 | /* Deal with open(O_TRUNC) */ |
2650 | if (sattr->ia_valid & ATTR_OPEN) | |
2651 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2652 | ||
2653 | /* Optimization: if the end result is no change, don't RPC */ | |
2654 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2655 | return 0; | |
2656 | ||
d530838b | 2657 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2658 | if (sattr->ia_valid & ATTR_FILE) { |
2659 | struct nfs_open_context *ctx; | |
2660 | ||
2661 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2662 | if (ctx) { |
2663 | cred = ctx->cred; | |
2664 | state = ctx->state; | |
2665 | } | |
659bfcd6 | 2666 | } |
08e9eac4 | 2667 | |
659bfcd6 | 2668 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2669 | if (status == 0) |
2670 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2671 | return status; |
2672 | } | |
2673 | ||
0c2e53f1 TM |
2674 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2675 | const struct qstr *name, struct nfs_fh *fhandle, | |
2676 | struct nfs_fattr *fattr) | |
2b3de441 | 2677 | { |
0c2e53f1 | 2678 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2679 | int status; |
2680 | struct nfs4_lookup_arg args = { | |
2681 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2682 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2683 | .name = name, |
2684 | }; | |
2685 | struct nfs4_lookup_res res = { | |
2686 | .server = server, | |
2687 | .fattr = fattr, | |
2688 | .fh = fhandle, | |
2689 | }; | |
2690 | struct rpc_message msg = { | |
2691 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2692 | .rpc_argp = &args, | |
2693 | .rpc_resp = &res, | |
2694 | }; | |
2695 | ||
2696 | nfs_fattr_init(fattr); | |
2697 | ||
1da177e4 | 2698 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2699 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2700 | dprintk("NFS reply lookup: %d\n", status); |
2701 | return status; | |
2702 | } | |
2703 | ||
72de53ec | 2704 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2705 | { |
7ebb9315 | 2706 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2707 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2708 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2709 | fattr->nlink = 2; | |
2710 | } | |
2711 | ||
72de53ec BS |
2712 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2713 | struct qstr *name, struct nfs_fh *fhandle, | |
2714 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2715 | { |
2716 | struct nfs4_exception exception = { }; | |
72de53ec | 2717 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2718 | int err; |
2719 | do { | |
72de53ec BS |
2720 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2721 | switch (err) { | |
08ef7bd3 | 2722 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2723 | err = -ENOENT; |
2724 | goto out; | |
0c2e53f1 | 2725 | case -NFS4ERR_MOVED: |
f05d147f | 2726 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2727 | goto out; |
0c2e53f1 | 2728 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2729 | err = -EPERM; |
2730 | if (client != *clnt) | |
2731 | goto out; | |
2732 | ||
2733 | client = nfs4_create_sec_client(client, dir, name); | |
2734 | if (IS_ERR(client)) | |
2735 | return PTR_ERR(client); | |
2736 | ||
2737 | exception.retry = 1; | |
2738 | break; | |
2739 | default: | |
2740 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2741 | } |
1da177e4 | 2742 | } while (exception.retry); |
72de53ec BS |
2743 | |
2744 | out: | |
2745 | if (err == 0) | |
2746 | *clnt = client; | |
2747 | else if (client != *clnt) | |
2748 | rpc_shutdown_client(client); | |
2749 | ||
1da177e4 LT |
2750 | return err; |
2751 | } | |
2752 | ||
80a16b21 | 2753 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2754 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2755 | { | |
2756 | int status; | |
2757 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2758 | ||
2759 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2760 | if (client != NFS_CLIENT(dir)) { | |
2761 | rpc_shutdown_client(client); | |
2762 | nfs_fixup_secinfo_attributes(fattr); | |
2763 | } | |
2764 | return status; | |
2765 | } | |
2766 | ||
f05d147f BS |
2767 | struct rpc_clnt * |
2768 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2769 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2770 | { | |
2771 | int status; | |
2772 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2773 | ||
2774 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2775 | if (status < 0) { | |
2776 | rpc_shutdown_client(client); | |
2777 | return ERR_PTR(status); | |
2778 | } | |
2779 | return client; | |
2780 | } | |
2781 | ||
1da177e4 LT |
2782 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2783 | { | |
76b32999 | 2784 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2785 | struct nfs4_accessargs args = { |
2786 | .fh = NFS_FH(inode), | |
a4980e78 | 2787 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2788 | }; |
2789 | struct nfs4_accessres res = { | |
2790 | .server = server, | |
1da177e4 | 2791 | }; |
1da177e4 LT |
2792 | struct rpc_message msg = { |
2793 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2794 | .rpc_argp = &args, | |
2795 | .rpc_resp = &res, | |
2796 | .rpc_cred = entry->cred, | |
2797 | }; | |
2798 | int mode = entry->mask; | |
2799 | int status; | |
2800 | ||
2801 | /* | |
2802 | * Determine which access bits we want to ask for... | |
2803 | */ | |
2804 | if (mode & MAY_READ) | |
2805 | args.access |= NFS4_ACCESS_READ; | |
2806 | if (S_ISDIR(inode->i_mode)) { | |
2807 | if (mode & MAY_WRITE) | |
2808 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2809 | if (mode & MAY_EXEC) | |
2810 | args.access |= NFS4_ACCESS_LOOKUP; | |
2811 | } else { | |
2812 | if (mode & MAY_WRITE) | |
2813 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2814 | if (mode & MAY_EXEC) | |
2815 | args.access |= NFS4_ACCESS_EXECUTE; | |
2816 | } | |
c407d41a TM |
2817 | |
2818 | res.fattr = nfs_alloc_fattr(); | |
2819 | if (res.fattr == NULL) | |
2820 | return -ENOMEM; | |
2821 | ||
7c513058 | 2822 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2823 | if (!status) { |
6168f62c | 2824 | nfs_access_set_mask(entry, res.access); |
c407d41a | 2825 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2826 | } |
c407d41a | 2827 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2828 | return status; |
2829 | } | |
2830 | ||
2831 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2832 | { | |
2833 | struct nfs4_exception exception = { }; | |
2834 | int err; | |
2835 | do { | |
2836 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2837 | _nfs4_proc_access(inode, entry), | |
2838 | &exception); | |
2839 | } while (exception.retry); | |
2840 | return err; | |
2841 | } | |
2842 | ||
2843 | /* | |
2844 | * TODO: For the time being, we don't try to get any attributes | |
2845 | * along with any of the zero-copy operations READ, READDIR, | |
2846 | * READLINK, WRITE. | |
2847 | * | |
2848 | * In the case of the first three, we want to put the GETATTR | |
2849 | * after the read-type operation -- this is because it is hard | |
2850 | * to predict the length of a GETATTR response in v4, and thus | |
2851 | * align the READ data correctly. This means that the GETATTR | |
2852 | * may end up partially falling into the page cache, and we should | |
2853 | * shift it into the 'tail' of the xdr_buf before processing. | |
2854 | * To do this efficiently, we need to know the total length | |
2855 | * of data received, which doesn't seem to be available outside | |
2856 | * of the RPC layer. | |
2857 | * | |
2858 | * In the case of WRITE, we also want to put the GETATTR after | |
2859 | * the operation -- in this case because we want to make sure | |
140150db | 2860 | * we get the post-operation mtime and size. |
1da177e4 LT |
2861 | * |
2862 | * Both of these changes to the XDR layer would in fact be quite | |
2863 | * minor, but I decided to leave them for a subsequent patch. | |
2864 | */ | |
2865 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2866 | unsigned int pgbase, unsigned int pglen) | |
2867 | { | |
2868 | struct nfs4_readlink args = { | |
2869 | .fh = NFS_FH(inode), | |
2870 | .pgbase = pgbase, | |
2871 | .pglen = pglen, | |
2872 | .pages = &page, | |
2873 | }; | |
f50c7000 | 2874 | struct nfs4_readlink_res res; |
1da177e4 LT |
2875 | struct rpc_message msg = { |
2876 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2877 | .rpc_argp = &args, | |
f50c7000 | 2878 | .rpc_resp = &res, |
1da177e4 LT |
2879 | }; |
2880 | ||
7c513058 | 2881 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2882 | } |
2883 | ||
2884 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2885 | unsigned int pgbase, unsigned int pglen) | |
2886 | { | |
2887 | struct nfs4_exception exception = { }; | |
2888 | int err; | |
2889 | do { | |
2890 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2891 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2892 | &exception); | |
2893 | } while (exception.retry); | |
2894 | return err; | |
2895 | } | |
2896 | ||
1da177e4 | 2897 | /* |
8867fe58 | 2898 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 2899 | */ |
1da177e4 LT |
2900 | static int |
2901 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 2902 | int flags) |
1da177e4 | 2903 | { |
8867fe58 | 2904 | struct nfs_open_context *ctx; |
1da177e4 | 2905 | struct nfs4_state *state; |
1da177e4 LT |
2906 | int status = 0; |
2907 | ||
8867fe58 MS |
2908 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
2909 | if (IS_ERR(ctx)) | |
2910 | return PTR_ERR(ctx); | |
2911 | ||
a8a5da99 | 2912 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
2913 | state = nfs4_do_open(dir, dentry, ctx->mode, |
2914 | flags, sattr, ctx->cred, | |
2915 | &ctx->mdsthreshold); | |
d4d9cdcb | 2916 | d_drop(dentry); |
1da177e4 LT |
2917 | if (IS_ERR(state)) { |
2918 | status = PTR_ERR(state); | |
c0204fd2 | 2919 | goto out; |
1da177e4 | 2920 | } |
d4d9cdcb | 2921 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2922 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 2923 | ctx->state = state; |
1da177e4 | 2924 | out: |
8867fe58 | 2925 | put_nfs_open_context(ctx); |
1da177e4 LT |
2926 | return status; |
2927 | } | |
2928 | ||
2929 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2930 | { | |
16e42959 | 2931 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2932 | struct nfs_removeargs args = { |
1da177e4 | 2933 | .fh = NFS_FH(dir), |
26fe5750 | 2934 | .name = *name, |
16e42959 | 2935 | }; |
4fdc17b2 | 2936 | struct nfs_removeres res = { |
16e42959 | 2937 | .server = server, |
1da177e4 | 2938 | }; |
1da177e4 | 2939 | struct rpc_message msg = { |
4fdc17b2 TM |
2940 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2941 | .rpc_argp = &args, | |
2942 | .rpc_resp = &res, | |
1da177e4 | 2943 | }; |
778d2817 | 2944 | int status; |
1da177e4 | 2945 | |
7c513058 | 2946 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 2947 | if (status == 0) |
16e42959 | 2948 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
2949 | return status; |
2950 | } | |
2951 | ||
2952 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2953 | { | |
2954 | struct nfs4_exception exception = { }; | |
2955 | int err; | |
2956 | do { | |
2957 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2958 | _nfs4_proc_remove(dir, name), | |
2959 | &exception); | |
2960 | } while (exception.retry); | |
2961 | return err; | |
2962 | } | |
2963 | ||
e4eff1a6 | 2964 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2965 | { |
e4eff1a6 TM |
2966 | struct nfs_server *server = NFS_SERVER(dir); |
2967 | struct nfs_removeargs *args = msg->rpc_argp; | |
2968 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2969 | |
e4eff1a6 | 2970 | res->server = server; |
1da177e4 | 2971 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2972 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2973 | } |
2974 | ||
34e137cc BS |
2975 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
2976 | { | |
2977 | if (nfs4_setup_sequence(NFS_SERVER(data->dir), | |
2978 | &data->args.seq_args, | |
2979 | &data->res.seq_res, | |
2980 | task)) | |
2981 | return; | |
2982 | rpc_call_start(task); | |
1da177e4 LT |
2983 | } |
2984 | ||
e4eff1a6 | 2985 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2986 | { |
e4eff1a6 TM |
2987 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2988 | ||
14516c3a TM |
2989 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2990 | return 0; | |
9e33bed5 | 2991 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2992 | return 0; |
2993 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 2994 | return 1; |
1da177e4 LT |
2995 | } |
2996 | ||
d3d4152a JL |
2997 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2998 | { | |
2999 | struct nfs_server *server = NFS_SERVER(dir); | |
3000 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3001 | struct nfs_renameres *res = msg->rpc_resp; | |
3002 | ||
3003 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3004 | res->server = server; |
9d12b216 | 3005 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3006 | } |
3007 | ||
c6bfa1a1 BS |
3008 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3009 | { | |
3010 | if (nfs4_setup_sequence(NFS_SERVER(data->old_dir), | |
3011 | &data->args.seq_args, | |
3012 | &data->res.seq_res, | |
3013 | task)) | |
3014 | return; | |
3015 | rpc_call_start(task); | |
d3d4152a JL |
3016 | } |
3017 | ||
3018 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3019 | struct inode *new_dir) | |
3020 | { | |
3021 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
3022 | ||
3023 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3024 | return 0; | |
3025 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3026 | return 0; | |
3027 | ||
3028 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3029 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3030 | return 1; |
3031 | } | |
3032 | ||
1da177e4 LT |
3033 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3034 | struct inode *new_dir, struct qstr *new_name) | |
3035 | { | |
6caf2c82 | 3036 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3037 | struct nfs_renameargs arg = { |
1da177e4 LT |
3038 | .old_dir = NFS_FH(old_dir), |
3039 | .new_dir = NFS_FH(new_dir), | |
3040 | .old_name = old_name, | |
3041 | .new_name = new_name, | |
6caf2c82 | 3042 | }; |
e8582a8b | 3043 | struct nfs_renameres res = { |
6caf2c82 | 3044 | .server = server, |
1da177e4 | 3045 | }; |
1da177e4 LT |
3046 | struct rpc_message msg = { |
3047 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3048 | .rpc_argp = &arg, | |
3049 | .rpc_resp = &res, | |
3050 | }; | |
011fff72 | 3051 | int status = -ENOMEM; |
1da177e4 | 3052 | |
7c513058 | 3053 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3054 | if (!status) { |
3055 | update_changeattr(old_dir, &res.old_cinfo); | |
3056 | update_changeattr(new_dir, &res.new_cinfo); | |
3057 | } | |
3058 | return status; | |
3059 | } | |
3060 | ||
3061 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3062 | struct inode *new_dir, struct qstr *new_name) | |
3063 | { | |
3064 | struct nfs4_exception exception = { }; | |
3065 | int err; | |
3066 | do { | |
3067 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3068 | _nfs4_proc_rename(old_dir, old_name, | |
3069 | new_dir, new_name), | |
3070 | &exception); | |
3071 | } while (exception.retry); | |
3072 | return err; | |
3073 | } | |
3074 | ||
3075 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3076 | { | |
91ba2eee | 3077 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3078 | struct nfs4_link_arg arg = { |
3079 | .fh = NFS_FH(inode), | |
3080 | .dir_fh = NFS_FH(dir), | |
3081 | .name = name, | |
91ba2eee TM |
3082 | .bitmask = server->attr_bitmask, |
3083 | }; | |
91ba2eee TM |
3084 | struct nfs4_link_res res = { |
3085 | .server = server, | |
1da177e4 | 3086 | }; |
1da177e4 LT |
3087 | struct rpc_message msg = { |
3088 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3089 | .rpc_argp = &arg, | |
91ba2eee | 3090 | .rpc_resp = &res, |
1da177e4 | 3091 | }; |
136f2627 TM |
3092 | int status = -ENOMEM; |
3093 | ||
3094 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3095 | if (res.fattr == NULL) |
136f2627 | 3096 | goto out; |
1da177e4 | 3097 | |
7c513058 | 3098 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3099 | if (!status) { |
3100 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3101 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3102 | } |
136f2627 | 3103 | out: |
136f2627 | 3104 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3105 | return status; |
3106 | } | |
3107 | ||
3108 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3109 | { | |
3110 | struct nfs4_exception exception = { }; | |
3111 | int err; | |
3112 | do { | |
3113 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3114 | _nfs4_proc_link(inode, dir, name), | |
3115 | &exception); | |
3116 | } while (exception.retry); | |
3117 | return err; | |
3118 | } | |
3119 | ||
57dc9a57 TM |
3120 | struct nfs4_createdata { |
3121 | struct rpc_message msg; | |
3122 | struct nfs4_create_arg arg; | |
3123 | struct nfs4_create_res res; | |
3124 | struct nfs_fh fh; | |
3125 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3126 | }; |
3127 | ||
3128 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3129 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3130 | { | |
3131 | struct nfs4_createdata *data; | |
3132 | ||
3133 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3134 | if (data != NULL) { | |
3135 | struct nfs_server *server = NFS_SERVER(dir); | |
3136 | ||
3137 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3138 | data->msg.rpc_argp = &data->arg; | |
3139 | data->msg.rpc_resp = &data->res; | |
3140 | data->arg.dir_fh = NFS_FH(dir); | |
3141 | data->arg.server = server; | |
3142 | data->arg.name = name; | |
3143 | data->arg.attrs = sattr; | |
3144 | data->arg.ftype = ftype; | |
3145 | data->arg.bitmask = server->attr_bitmask; | |
3146 | data->res.server = server; | |
3147 | data->res.fh = &data->fh; | |
3148 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3149 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3150 | } |
3151 | return data; | |
3152 | } | |
3153 | ||
3154 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3155 | { | |
7c513058 | 3156 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3157 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3158 | if (status == 0) { |
3159 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3160 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3161 | } | |
3162 | return status; | |
3163 | } | |
3164 | ||
3165 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3166 | { | |
3167 | kfree(data); | |
3168 | } | |
3169 | ||
4f390c15 | 3170 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3171 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3172 | { |
57dc9a57 TM |
3173 | struct nfs4_createdata *data; |
3174 | int status = -ENAMETOOLONG; | |
1da177e4 | 3175 | |
94a6d753 | 3176 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3177 | goto out; |
4f390c15 | 3178 | |
57dc9a57 TM |
3179 | status = -ENOMEM; |
3180 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3181 | if (data == NULL) | |
3182 | goto out; | |
3183 | ||
3184 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3185 | data->arg.u.symlink.pages = &page; | |
3186 | data->arg.u.symlink.len = len; | |
1da177e4 | 3187 | |
57dc9a57 TM |
3188 | status = nfs4_do_create(dir, dentry, data); |
3189 | ||
3190 | nfs4_free_createdata(data); | |
3191 | out: | |
1da177e4 LT |
3192 | return status; |
3193 | } | |
3194 | ||
4f390c15 | 3195 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3196 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3197 | { |
3198 | struct nfs4_exception exception = { }; | |
3199 | int err; | |
3200 | do { | |
3201 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3202 | _nfs4_proc_symlink(dir, dentry, page, |
3203 | len, sattr), | |
1da177e4 LT |
3204 | &exception); |
3205 | } while (exception.retry); | |
3206 | return err; | |
3207 | } | |
3208 | ||
3209 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3210 | struct iattr *sattr) | |
3211 | { | |
57dc9a57 TM |
3212 | struct nfs4_createdata *data; |
3213 | int status = -ENOMEM; | |
1da177e4 | 3214 | |
57dc9a57 TM |
3215 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3216 | if (data == NULL) | |
3217 | goto out; | |
3218 | ||
3219 | status = nfs4_do_create(dir, dentry, data); | |
3220 | ||
3221 | nfs4_free_createdata(data); | |
3222 | out: | |
1da177e4 LT |
3223 | return status; |
3224 | } | |
3225 | ||
3226 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3227 | struct iattr *sattr) | |
3228 | { | |
3229 | struct nfs4_exception exception = { }; | |
3230 | int err; | |
a8a5da99 AK |
3231 | |
3232 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3233 | do { |
3234 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3235 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3236 | &exception); | |
3237 | } while (exception.retry); | |
3238 | return err; | |
3239 | } | |
3240 | ||
3241 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3242 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3243 | { |
3244 | struct inode *dir = dentry->d_inode; | |
3245 | struct nfs4_readdir_arg args = { | |
3246 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3247 | .pages = pages, |
1da177e4 LT |
3248 | .pgbase = 0, |
3249 | .count = count, | |
96d25e53 | 3250 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3251 | .plus = plus, |
1da177e4 LT |
3252 | }; |
3253 | struct nfs4_readdir_res res; | |
3254 | struct rpc_message msg = { | |
3255 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3256 | .rpc_argp = &args, | |
3257 | .rpc_resp = &res, | |
3258 | .rpc_cred = cred, | |
3259 | }; | |
3260 | int status; | |
3261 | ||
3110ff80 | 3262 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3263 | dentry->d_parent->d_name.name, |
3264 | dentry->d_name.name, | |
3265 | (unsigned long long)cookie); | |
c3f52af3 | 3266 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3267 | res.pgbase = args.pgbase; |
7c513058 | 3268 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3269 | if (status >= 0) { |
c3f52af3 | 3270 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3271 | status += args.pgbase; |
3272 | } | |
c4812998 TM |
3273 | |
3274 | nfs_invalidate_atime(dir); | |
3275 | ||
3110ff80 | 3276 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3277 | return status; |
3278 | } | |
3279 | ||
3280 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3281 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3282 | { |
3283 | struct nfs4_exception exception = { }; | |
3284 | int err; | |
3285 | do { | |
3286 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3287 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3288 | pages, count, plus), |
1da177e4 LT |
3289 | &exception); |
3290 | } while (exception.retry); | |
3291 | return err; | |
3292 | } | |
3293 | ||
3294 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3295 | struct iattr *sattr, dev_t rdev) | |
3296 | { | |
57dc9a57 TM |
3297 | struct nfs4_createdata *data; |
3298 | int mode = sattr->ia_mode; | |
3299 | int status = -ENOMEM; | |
1da177e4 LT |
3300 | |
3301 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3302 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3303 | |
3304 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3305 | if (data == NULL) | |
3306 | goto out; | |
3307 | ||
1da177e4 | 3308 | if (S_ISFIFO(mode)) |
57dc9a57 | 3309 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3310 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3311 | data->arg.ftype = NF4BLK; |
3312 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3313 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3314 | } |
3315 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3316 | data->arg.ftype = NF4CHR; |
3317 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3318 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3319 | } |
1da177e4 | 3320 | |
57dc9a57 TM |
3321 | status = nfs4_do_create(dir, dentry, data); |
3322 | ||
3323 | nfs4_free_createdata(data); | |
3324 | out: | |
1da177e4 LT |
3325 | return status; |
3326 | } | |
3327 | ||
3328 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3329 | struct iattr *sattr, dev_t rdev) | |
3330 | { | |
3331 | struct nfs4_exception exception = { }; | |
3332 | int err; | |
a8a5da99 AK |
3333 | |
3334 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3335 | do { |
3336 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3337 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3338 | &exception); | |
3339 | } while (exception.retry); | |
3340 | return err; | |
3341 | } | |
3342 | ||
3343 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3344 | struct nfs_fsstat *fsstat) | |
3345 | { | |
3346 | struct nfs4_statfs_arg args = { | |
3347 | .fh = fhandle, | |
3348 | .bitmask = server->attr_bitmask, | |
3349 | }; | |
24ad148a BH |
3350 | struct nfs4_statfs_res res = { |
3351 | .fsstat = fsstat, | |
3352 | }; | |
1da177e4 LT |
3353 | struct rpc_message msg = { |
3354 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3355 | .rpc_argp = &args, | |
24ad148a | 3356 | .rpc_resp = &res, |
1da177e4 LT |
3357 | }; |
3358 | ||
0e574af1 | 3359 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3360 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3361 | } |
3362 | ||
3363 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3364 | { | |
3365 | struct nfs4_exception exception = { }; | |
3366 | int err; | |
3367 | do { | |
3368 | err = nfs4_handle_exception(server, | |
3369 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3370 | &exception); | |
3371 | } while (exception.retry); | |
3372 | return err; | |
3373 | } | |
3374 | ||
3375 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3376 | struct nfs_fsinfo *fsinfo) | |
3377 | { | |
3378 | struct nfs4_fsinfo_arg args = { | |
3379 | .fh = fhandle, | |
3380 | .bitmask = server->attr_bitmask, | |
3381 | }; | |
3dda5e43 BH |
3382 | struct nfs4_fsinfo_res res = { |
3383 | .fsinfo = fsinfo, | |
3384 | }; | |
1da177e4 LT |
3385 | struct rpc_message msg = { |
3386 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3387 | .rpc_argp = &args, | |
3dda5e43 | 3388 | .rpc_resp = &res, |
1da177e4 LT |
3389 | }; |
3390 | ||
7c513058 | 3391 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3392 | } |
3393 | ||
3394 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3395 | { | |
3396 | struct nfs4_exception exception = { }; | |
3397 | int err; | |
3398 | ||
3399 | do { | |
3400 | err = nfs4_handle_exception(server, | |
3401 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3402 | &exception); | |
3403 | } while (exception.retry); | |
3404 | return err; | |
3405 | } | |
3406 | ||
3407 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3408 | { | |
e38eb650 BS |
3409 | int error; |
3410 | ||
0e574af1 | 3411 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3412 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3413 | if (error == 0) { |
3414 | /* block layout checks this! */ | |
3415 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3416 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3417 | } |
e38eb650 BS |
3418 | |
3419 | return error; | |
1da177e4 LT |
3420 | } |
3421 | ||
3422 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3423 | struct nfs_pathconf *pathconf) | |
3424 | { | |
3425 | struct nfs4_pathconf_arg args = { | |
3426 | .fh = fhandle, | |
3427 | .bitmask = server->attr_bitmask, | |
3428 | }; | |
d45b2989 BH |
3429 | struct nfs4_pathconf_res res = { |
3430 | .pathconf = pathconf, | |
3431 | }; | |
1da177e4 LT |
3432 | struct rpc_message msg = { |
3433 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3434 | .rpc_argp = &args, | |
d45b2989 | 3435 | .rpc_resp = &res, |
1da177e4 LT |
3436 | }; |
3437 | ||
3438 | /* None of the pathconf attributes are mandatory to implement */ | |
3439 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3440 | memset(pathconf, 0, sizeof(*pathconf)); | |
3441 | return 0; | |
3442 | } | |
3443 | ||
0e574af1 | 3444 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3445 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3446 | } |
3447 | ||
3448 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3449 | struct nfs_pathconf *pathconf) | |
3450 | { | |
3451 | struct nfs4_exception exception = { }; | |
3452 | int err; | |
3453 | ||
3454 | do { | |
3455 | err = nfs4_handle_exception(server, | |
3456 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3457 | &exception); | |
3458 | } while (exception.retry); | |
3459 | return err; | |
3460 | } | |
3461 | ||
d20581aa BH |
3462 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3463 | { | |
cd841605 | 3464 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3465 | } |
3466 | ||
cbdabc7f | 3467 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3468 | { |
cd841605 | 3469 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3470 | |
9e33bed5 | 3471 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3472 | rpc_restart_call_prepare(task); |
ec06c096 | 3473 | return -EAGAIN; |
1da177e4 | 3474 | } |
8850df99 | 3475 | |
d20581aa | 3476 | __nfs4_read_done_cb(data); |
1da177e4 | 3477 | if (task->tk_status > 0) |
ec06c096 TM |
3478 | renew_lease(server, data->timestamp); |
3479 | return 0; | |
1da177e4 LT |
3480 | } |
3481 | ||
cbdabc7f AA |
3482 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3483 | { | |
3484 | ||
3485 | dprintk("--> %s\n", __func__); | |
3486 | ||
3487 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3488 | return -EAGAIN; | |
3489 | ||
d20581aa BH |
3490 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3491 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3492 | } |
3493 | ||
bdc7f021 | 3494 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3495 | { |
1da177e4 | 3496 | data->timestamp = jiffies; |
cbdabc7f | 3497 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3498 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3499 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3500 | } |
3501 | ||
ea7c3303 BS |
3502 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3503 | { | |
cd841605 | 3504 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
ea7c3303 BS |
3505 | &data->args.seq_args, |
3506 | &data->res.seq_res, | |
3507 | task)) | |
3508 | return; | |
3509 | rpc_call_start(task); | |
1da177e4 LT |
3510 | } |
3511 | ||
b029bc9b | 3512 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3513 | { |
cd841605 | 3514 | struct inode *inode = data->header->inode; |
1da177e4 | 3515 | |
9e33bed5 | 3516 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3517 | rpc_restart_call_prepare(task); |
788e7a89 | 3518 | return -EAGAIN; |
1da177e4 | 3519 | } |
4f9838c7 | 3520 | if (task->tk_status >= 0) { |
1da177e4 | 3521 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3522 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3523 | } |
788e7a89 | 3524 | return 0; |
1da177e4 LT |
3525 | } |
3526 | ||
b029bc9b FI |
3527 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3528 | { | |
3529 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3530 | return -EAGAIN; | |
d20581aa BH |
3531 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3532 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3533 | } |
3534 | ||
5a37f851 TM |
3535 | static |
3536 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3537 | { |
5a37f851 TM |
3538 | const struct nfs_pgio_header *hdr = data->header; |
3539 | ||
3540 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3541 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3542 | return false; | |
3543 | /* Otherwise, request attributes if and only if we don't hold | |
3544 | * a delegation | |
3545 | */ | |
011e2a7f | 3546 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3547 | } |
a69aef14 | 3548 | |
bdc7f021 | 3549 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3550 | { |
cd841605 | 3551 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3552 | |
5a37f851 | 3553 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3554 | data->args.bitmask = NULL; |
3555 | data->res.fattr = NULL; | |
3556 | } else | |
3557 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3558 | |
b029bc9b FI |
3559 | if (!data->write_done_cb) |
3560 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3561 | data->res.server = server; |
1da177e4 LT |
3562 | data->timestamp = jiffies; |
3563 | ||
bdc7f021 | 3564 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3565 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3566 | } |
3567 | ||
c6cb80d0 BS |
3568 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3569 | { | |
cd841605 | 3570 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
c6cb80d0 BS |
3571 | &data->args.seq_args, |
3572 | &data->res.seq_res, | |
3573 | task)) | |
3574 | return; | |
3575 | rpc_call_start(task); | |
1da177e4 LT |
3576 | } |
3577 | ||
0b7c0153 | 3578 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 BS |
3579 | { |
3580 | if (nfs4_setup_sequence(NFS_SERVER(data->inode), | |
3581 | &data->args.seq_args, | |
3582 | &data->res.seq_res, | |
3583 | task)) | |
3584 | return; | |
3585 | rpc_call_start(task); | |
1da177e4 LT |
3586 | } |
3587 | ||
0b7c0153 | 3588 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3589 | { |
1da177e4 | 3590 | struct inode *inode = data->inode; |
14516c3a | 3591 | |
9e33bed5 | 3592 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3593 | rpc_restart_call_prepare(task); |
788e7a89 | 3594 | return -EAGAIN; |
1da177e4 | 3595 | } |
788e7a89 | 3596 | return 0; |
1da177e4 LT |
3597 | } |
3598 | ||
0b7c0153 | 3599 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3600 | { |
3601 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3602 | return -EAGAIN; | |
0b7c0153 | 3603 | return data->commit_done_cb(task, data); |
5f452431 FI |
3604 | } |
3605 | ||
0b7c0153 | 3606 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3607 | { |
788e7a89 | 3608 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3609 | |
0b7c0153 FI |
3610 | if (data->commit_done_cb == NULL) |
3611 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3612 | data->res.server = server; |
bdc7f021 | 3613 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3614 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3615 | } |
3616 | ||
9bc4e3ca CL |
3617 | struct nfs4_renewdata { |
3618 | struct nfs_client *client; | |
3619 | unsigned long timestamp; | |
3620 | }; | |
3621 | ||
1da177e4 LT |
3622 | /* |
3623 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3624 | * standalone procedure for queueing an asynchronous RENEW. | |
3625 | */ | |
9bc4e3ca | 3626 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3627 | { |
9bc4e3ca CL |
3628 | struct nfs4_renewdata *data = calldata; |
3629 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3630 | |
0851de06 AB |
3631 | if (atomic_read(&clp->cl_count) > 1) |
3632 | nfs4_schedule_state_renewal(clp); | |
3633 | nfs_put_client(clp); | |
9bc4e3ca | 3634 | kfree(data); |
dc96aef9 AB |
3635 | } |
3636 | ||
9bc4e3ca | 3637 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3638 | { |
9bc4e3ca CL |
3639 | struct nfs4_renewdata *data = calldata; |
3640 | struct nfs_client *clp = data->client; | |
3641 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3642 | |
3643 | if (task->tk_status < 0) { | |
95baa25c | 3644 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3645 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3646 | return; | |
3647 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3648 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3649 | return; |
3650 | } | |
3651 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3652 | } |
452e9352 | 3653 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3654 | } |
3655 | ||
963d8fe5 TM |
3656 | static const struct rpc_call_ops nfs4_renew_ops = { |
3657 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3658 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3659 | }; |
3660 | ||
2f60ea6b | 3661 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3662 | { |
3663 | struct rpc_message msg = { | |
3664 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3665 | .rpc_argp = clp, | |
b4454fe1 | 3666 | .rpc_cred = cred, |
1da177e4 | 3667 | }; |
9bc4e3ca | 3668 | struct nfs4_renewdata *data; |
1da177e4 | 3669 | |
2f60ea6b TM |
3670 | if (renew_flags == 0) |
3671 | return 0; | |
0851de06 AB |
3672 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3673 | return -EIO; | |
b569ad34 | 3674 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3675 | if (data == NULL) |
3676 | return -ENOMEM; | |
3677 | data->client = clp; | |
3678 | data->timestamp = jiffies; | |
1da177e4 | 3679 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3680 | &nfs4_renew_ops, data); |
1da177e4 LT |
3681 | } |
3682 | ||
8534d4ec | 3683 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3684 | { |
3685 | struct rpc_message msg = { | |
3686 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3687 | .rpc_argp = clp, | |
b4454fe1 | 3688 | .rpc_cred = cred, |
1da177e4 LT |
3689 | }; |
3690 | unsigned long now = jiffies; | |
3691 | int status; | |
3692 | ||
3693 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3694 | if (status < 0) | |
3695 | return status; | |
452e9352 | 3696 | do_renew_lease(clp, now); |
1da177e4 LT |
3697 | return 0; |
3698 | } | |
3699 | ||
aa1870af BF |
3700 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3701 | { | |
3702 | return (server->caps & NFS_CAP_ACLS) | |
3703 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3704 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3705 | } | |
3706 | ||
21f498c2 TM |
3707 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3708 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3709 | * the stack. |
3710 | */ | |
21f498c2 | 3711 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3712 | |
e9e3d724 NH |
3713 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3714 | struct page **pages, unsigned int *pgbase) | |
3715 | { | |
3716 | struct page *newpage, **spages; | |
3717 | int rc = 0; | |
3718 | size_t len; | |
3719 | spages = pages; | |
3720 | ||
3721 | do { | |
21f498c2 | 3722 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3723 | newpage = alloc_page(GFP_KERNEL); |
3724 | ||
3725 | if (newpage == NULL) | |
3726 | goto unwind; | |
3727 | memcpy(page_address(newpage), buf, len); | |
3728 | buf += len; | |
3729 | buflen -= len; | |
3730 | *pages++ = newpage; | |
3731 | rc++; | |
3732 | } while (buflen != 0); | |
3733 | ||
3734 | return rc; | |
3735 | ||
3736 | unwind: | |
3737 | for(; rc > 0; rc--) | |
3738 | __free_page(spages[rc-1]); | |
3739 | return -ENOMEM; | |
3740 | } | |
3741 | ||
e50a1c2e BF |
3742 | struct nfs4_cached_acl { |
3743 | int cached; | |
3744 | size_t len; | |
3e9d4154 | 3745 | char data[0]; |
e50a1c2e BF |
3746 | }; |
3747 | ||
3748 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3749 | { | |
3750 | struct nfs_inode *nfsi = NFS_I(inode); | |
3751 | ||
3752 | spin_lock(&inode->i_lock); | |
3753 | kfree(nfsi->nfs4_acl); | |
3754 | nfsi->nfs4_acl = acl; | |
3755 | spin_unlock(&inode->i_lock); | |
3756 | } | |
3757 | ||
3758 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3759 | { | |
3760 | nfs4_set_cached_acl(inode, NULL); | |
3761 | } | |
3762 | ||
3763 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3764 | { | |
3765 | struct nfs_inode *nfsi = NFS_I(inode); | |
3766 | struct nfs4_cached_acl *acl; | |
3767 | int ret = -ENOENT; | |
3768 | ||
3769 | spin_lock(&inode->i_lock); | |
3770 | acl = nfsi->nfs4_acl; | |
3771 | if (acl == NULL) | |
3772 | goto out; | |
3773 | if (buf == NULL) /* user is just asking for length */ | |
3774 | goto out_len; | |
3775 | if (acl->cached == 0) | |
3776 | goto out; | |
3777 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3778 | if (acl->len > buflen) | |
3779 | goto out; | |
3780 | memcpy(buf, acl->data, acl->len); | |
3781 | out_len: | |
3782 | ret = acl->len; | |
3783 | out: | |
3784 | spin_unlock(&inode->i_lock); | |
3785 | return ret; | |
3786 | } | |
3787 | ||
5794d21e | 3788 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3789 | { |
3790 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 3791 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 3792 | |
1f1ea6c2 | 3793 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 3794 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
3795 | if (acl == NULL) |
3796 | goto out; | |
3797 | acl->cached = 1; | |
5794d21e | 3798 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3799 | } else { |
3800 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3801 | if (acl == NULL) | |
3802 | goto out; | |
3803 | acl->cached = 0; | |
3804 | } | |
3805 | acl->len = acl_len; | |
3806 | out: | |
3807 | nfs4_set_cached_acl(inode, acl); | |
3808 | } | |
3809 | ||
bf118a34 AA |
3810 | /* |
3811 | * The getxattr API returns the required buffer length when called with a | |
3812 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3813 | * the required buf. On a NULL buf, we send a page of data to the server | |
3814 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3815 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3816 | * the cache. If not so, we throw away the page, and cache the required | |
3817 | * length. The next getxattr call will then produce another round trip to | |
3818 | * the server, this time with the input buf of the required size. | |
3819 | */ | |
16b4289c | 3820 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3821 | { |
bf118a34 | 3822 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3823 | struct nfs_getaclargs args = { |
3824 | .fh = NFS_FH(inode), | |
3825 | .acl_pages = pages, | |
3826 | .acl_len = buflen, | |
3827 | }; | |
663c79b3 BH |
3828 | struct nfs_getaclres res = { |
3829 | .acl_len = buflen, | |
3830 | }; | |
aa1870af BF |
3831 | struct rpc_message msg = { |
3832 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3833 | .rpc_argp = &args, | |
663c79b3 | 3834 | .rpc_resp = &res, |
aa1870af | 3835 | }; |
21f498c2 TM |
3836 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
3837 | int ret = -ENOMEM, i; | |
aa1870af | 3838 | |
bf118a34 AA |
3839 | /* As long as we're doing a round trip to the server anyway, |
3840 | * let's be prepared for a page of acl data. */ | |
3841 | if (npages == 0) | |
3842 | npages = 1; | |
21f498c2 TM |
3843 | if (npages > ARRAY_SIZE(pages)) |
3844 | return -ERANGE; | |
5a006899 | 3845 | |
bf118a34 AA |
3846 | for (i = 0; i < npages; i++) { |
3847 | pages[i] = alloc_page(GFP_KERNEL); | |
3848 | if (!pages[i]) | |
3849 | goto out_free; | |
e50a1c2e | 3850 | } |
5a006899 SP |
3851 | |
3852 | /* for decoding across pages */ | |
3853 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3854 | if (!res.acl_scratch) | |
3855 | goto out_free; | |
3856 | ||
bf118a34 AA |
3857 | args.acl_len = npages * PAGE_SIZE; |
3858 | args.acl_pgbase = 0; | |
5a006899 | 3859 | |
de040bec | 3860 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3861 | __func__, buf, buflen, npages, args.acl_len); |
3862 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3863 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3864 | if (ret) |
3865 | goto out_free; | |
bf118a34 | 3866 | |
1f1ea6c2 TM |
3867 | /* Handle the case where the passed-in buffer is too short */ |
3868 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
3869 | /* Did the user only issue a request for the acl length? */ | |
3870 | if (buf == NULL) | |
3871 | goto out_ok; | |
e50a1c2e | 3872 | ret = -ERANGE; |
1f1ea6c2 | 3873 | goto out_free; |
e50a1c2e | 3874 | } |
1f1ea6c2 TM |
3875 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
3876 | if (buf) | |
3877 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); | |
3878 | out_ok: | |
3879 | ret = res.acl_len; | |
e50a1c2e | 3880 | out_free: |
bf118a34 AA |
3881 | for (i = 0; i < npages; i++) |
3882 | if (pages[i]) | |
3883 | __free_page(pages[i]); | |
331818f1 TM |
3884 | if (res.acl_scratch) |
3885 | __free_page(res.acl_scratch); | |
aa1870af BF |
3886 | return ret; |
3887 | } | |
3888 | ||
16b4289c TM |
3889 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3890 | { | |
3891 | struct nfs4_exception exception = { }; | |
3892 | ssize_t ret; | |
3893 | do { | |
3894 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3895 | if (ret >= 0) | |
3896 | break; | |
3897 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3898 | } while (exception.retry); | |
3899 | return ret; | |
3900 | } | |
3901 | ||
e50a1c2e BF |
3902 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3903 | { | |
3904 | struct nfs_server *server = NFS_SERVER(inode); | |
3905 | int ret; | |
3906 | ||
3907 | if (!nfs4_server_supports_acls(server)) | |
3908 | return -EOPNOTSUPP; | |
3909 | ret = nfs_revalidate_inode(server, inode); | |
3910 | if (ret < 0) | |
3911 | return ret; | |
08a22b39 AK |
3912 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3913 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3914 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3915 | if (ret != -ENOENT) | |
bf118a34 AA |
3916 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3917 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3918 | return ret; |
3919 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3920 | } | |
3921 | ||
16b4289c | 3922 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3923 | { |
3924 | struct nfs_server *server = NFS_SERVER(inode); | |
3925 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3926 | struct nfs_setaclargs arg = { | |
3927 | .fh = NFS_FH(inode), | |
3928 | .acl_pages = pages, | |
3929 | .acl_len = buflen, | |
3930 | }; | |
73c403a9 | 3931 | struct nfs_setaclres res; |
4b580ee3 BF |
3932 | struct rpc_message msg = { |
3933 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3934 | .rpc_argp = &arg, | |
73c403a9 | 3935 | .rpc_resp = &res, |
4b580ee3 | 3936 | }; |
21f498c2 | 3937 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 3938 | int ret, i; |
4b580ee3 BF |
3939 | |
3940 | if (!nfs4_server_supports_acls(server)) | |
3941 | return -EOPNOTSUPP; | |
21f498c2 TM |
3942 | if (npages > ARRAY_SIZE(pages)) |
3943 | return -ERANGE; | |
e9e3d724 NH |
3944 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3945 | if (i < 0) | |
3946 | return i; | |
57ec14c5 | 3947 | nfs4_inode_return_delegation(inode); |
7c513058 | 3948 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3949 | |
3950 | /* | |
3951 | * Free each page after tx, so the only ref left is | |
3952 | * held by the network stack | |
3953 | */ | |
3954 | for (; i > 0; i--) | |
3955 | put_page(pages[i-1]); | |
3956 | ||
08a22b39 AK |
3957 | /* |
3958 | * Acl update can result in inode attribute update. | |
3959 | * so mark the attribute cache invalid. | |
3960 | */ | |
3961 | spin_lock(&inode->i_lock); | |
3962 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3963 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3964 | nfs_access_zap_cache(inode); |
3965 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3966 | return ret; |
3967 | } | |
3968 | ||
16b4289c TM |
3969 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3970 | { | |
3971 | struct nfs4_exception exception = { }; | |
3972 | int err; | |
3973 | do { | |
3974 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3975 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3976 | &exception); | |
3977 | } while (exception.retry); | |
3978 | return err; | |
3979 | } | |
3980 | ||
1da177e4 | 3981 | static int |
aa5190d0 | 3982 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3983 | { |
aa5190d0 TM |
3984 | struct nfs_client *clp = server->nfs_client; |
3985 | ||
3986 | if (task->tk_status >= 0) | |
1da177e4 LT |
3987 | return 0; |
3988 | switch(task->tk_status) { | |
a1d0b5ee | 3989 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3990 | case -NFS4ERR_ADMIN_REVOKED: |
3991 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
3992 | if (state == NULL) |
3993 | break; | |
3994 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3995 | case -NFS4ERR_OPENMODE: |
3996 | if (state == NULL) | |
3997 | break; | |
0400a6b0 TM |
3998 | nfs4_schedule_stateid_recovery(server, state); |
3999 | goto wait_on_recovery; | |
0ced63d1 TM |
4000 | case -NFS4ERR_EXPIRED: |
4001 | if (state != NULL) | |
4002 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 4003 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4004 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4005 | nfs4_schedule_lease_recovery(clp); |
4006 | goto wait_on_recovery; | |
4745e315 AA |
4007 | #if defined(CONFIG_NFS_V4_1) |
4008 | case -NFS4ERR_BADSESSION: | |
4009 | case -NFS4ERR_BADSLOT: | |
4010 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4011 | case -NFS4ERR_DEADSESSION: | |
4012 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4013 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4014 | case -NFS4ERR_SEQ_MISORDERED: | |
4015 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4016 | task->tk_status); | |
9f594791 | 4017 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4018 | task->tk_status = 0; |
4019 | return -EAGAIN; | |
4020 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4021 | case -NFS4ERR_DELAY: |
aa5190d0 | 4022 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4023 | case -NFS4ERR_GRACE: |
2c643488 | 4024 | case -EKEYEXPIRED: |
1da177e4 LT |
4025 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4026 | task->tk_status = 0; | |
4027 | return -EAGAIN; | |
a8a4ae3a | 4028 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4029 | case -NFS4ERR_OLD_STATEID: |
4030 | task->tk_status = 0; | |
4031 | return -EAGAIN; | |
4032 | } | |
4033 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4034 | return 0; | |
0400a6b0 | 4035 | wait_on_recovery: |
a2c0b9e2 | 4036 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4037 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4038 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4039 | task->tk_status = 0; | |
4040 | return -EAGAIN; | |
1da177e4 LT |
4041 | } |
4042 | ||
f092075d CL |
4043 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4044 | nfs4_verifier *bootverf) | |
cd93710e CL |
4045 | { |
4046 | __be32 verf[2]; | |
4047 | ||
2c820d9a CL |
4048 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4049 | /* An impossible timestamp guarantees this value | |
4050 | * will never match a generated boot time. */ | |
4051 | verf[0] = 0; | |
4052 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
4053 | } else { | |
f092075d CL |
4054 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
4055 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
4056 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4057 | } |
cd93710e CL |
4058 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4059 | } | |
4060 | ||
e984a55a CL |
4061 | static unsigned int |
4062 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4063 | char *buf, size_t len) | |
4064 | { | |
4065 | unsigned int result; | |
4066 | ||
4067 | rcu_read_lock(); | |
4068 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4069 | clp->cl_ipaddr, | |
4070 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4071 | RPC_DISPLAY_ADDR), | |
4072 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4073 | RPC_DISPLAY_PROTO)); | |
4074 | rcu_read_unlock(); | |
4075 | return result; | |
4076 | } | |
4077 | ||
4078 | static unsigned int | |
4079 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4080 | char *buf, size_t len) | |
4081 | { | |
6f2ea7f2 CL |
4082 | char *nodename = clp->cl_rpcclient->cl_nodename; |
4083 | ||
4084 | if (nfs4_client_id_uniquifier[0] != '\0') | |
4085 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4086 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4087 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4088 | nodename); |
e984a55a CL |
4089 | } |
4090 | ||
6bbb4ae8 CL |
4091 | /** |
4092 | * nfs4_proc_setclientid - Negotiate client ID | |
4093 | * @clp: state data structure | |
4094 | * @program: RPC program for NFSv4 callback service | |
4095 | * @port: IP port number for NFS4 callback service | |
4096 | * @cred: RPC credential to use for this call | |
4097 | * @res: where to place the result | |
4098 | * | |
4099 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4100 | */ | |
bb8b27e5 TM |
4101 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4102 | unsigned short port, struct rpc_cred *cred, | |
4103 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4104 | { |
4105 | nfs4_verifier sc_verifier; | |
4106 | struct nfs4_setclientid setclientid = { | |
4107 | .sc_verifier = &sc_verifier, | |
4108 | .sc_prog = program, | |
f4eecd5d | 4109 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4110 | }; |
4111 | struct rpc_message msg = { | |
4112 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4113 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4114 | .rpc_resp = res, |
286d7d6a | 4115 | .rpc_cred = cred, |
1da177e4 | 4116 | }; |
6bbb4ae8 | 4117 | int status; |
1da177e4 | 4118 | |
de734831 | 4119 | /* nfs_client_id4 */ |
f092075d | 4120 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4121 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4122 | setclientid.sc_name_len = | |
4123 | nfs4_init_uniform_client_string(clp, | |
4124 | setclientid.sc_name, | |
4125 | sizeof(setclientid.sc_name)); | |
4126 | else | |
4127 | setclientid.sc_name_len = | |
4128 | nfs4_init_nonuniform_client_string(clp, | |
4129 | setclientid.sc_name, | |
4130 | sizeof(setclientid.sc_name)); | |
de734831 | 4131 | /* cb_client4 */ |
e984a55a | 4132 | rcu_read_lock(); |
de734831 | 4133 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4134 | sizeof(setclientid.sc_netid), |
4135 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4136 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4137 | rcu_read_unlock(); |
4138 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4139 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4140 | clp->cl_ipaddr, port >> 8, port & 255); |
4141 | ||
6bbb4ae8 CL |
4142 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4143 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4144 | setclientid.sc_name_len, setclientid.sc_name); | |
4145 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4146 | dprintk("NFS reply setclientid: %d\n", status); | |
4147 | return status; | |
1da177e4 LT |
4148 | } |
4149 | ||
6bbb4ae8 CL |
4150 | /** |
4151 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4152 | * @clp: state data structure | |
4153 | * @res: result of a previous SETCLIENTID | |
4154 | * @cred: RPC credential to use for this call | |
4155 | * | |
4156 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4157 | */ | |
fd954ae1 | 4158 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4159 | struct nfs4_setclientid_res *arg, |
4160 | struct rpc_cred *cred) | |
1da177e4 LT |
4161 | { |
4162 | struct nfs_fsinfo fsinfo; | |
4163 | struct rpc_message msg = { | |
4164 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4165 | .rpc_argp = arg, |
1da177e4 | 4166 | .rpc_resp = &fsinfo, |
286d7d6a | 4167 | .rpc_cred = cred, |
1da177e4 LT |
4168 | }; |
4169 | unsigned long now; | |
4170 | int status; | |
4171 | ||
6bbb4ae8 CL |
4172 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4173 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4174 | clp->cl_clientid); | |
1da177e4 | 4175 | now = jiffies; |
1bd714f2 | 4176 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4177 | if (status == 0) { |
4178 | spin_lock(&clp->cl_lock); | |
4179 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4180 | clp->cl_last_renewal = now; | |
4181 | spin_unlock(&clp->cl_lock); | |
4182 | } | |
6bbb4ae8 | 4183 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4184 | return status; |
4185 | } | |
4186 | ||
fe650407 TM |
4187 | struct nfs4_delegreturndata { |
4188 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4189 | struct nfs4_delegreturnres res; |
fe650407 TM |
4190 | struct nfs_fh fh; |
4191 | nfs4_stateid stateid; | |
26e976a8 | 4192 | unsigned long timestamp; |
fa178f29 | 4193 | struct nfs_fattr fattr; |
fe650407 TM |
4194 | int rpc_status; |
4195 | }; | |
4196 | ||
fe650407 TM |
4197 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4198 | { | |
4199 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4200 | |
14516c3a TM |
4201 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4202 | return; | |
938e1010 | 4203 | |
79708861 RL |
4204 | switch (task->tk_status) { |
4205 | case -NFS4ERR_STALE_STATEID: | |
4206 | case -NFS4ERR_EXPIRED: | |
4207 | case 0: | |
fa178f29 | 4208 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4209 | break; |
4210 | default: | |
4211 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4212 | -EAGAIN) { | |
d00c5d43 | 4213 | rpc_restart_call_prepare(task); |
79708861 RL |
4214 | return; |
4215 | } | |
4216 | } | |
4217 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4218 | } |
4219 | ||
4220 | static void nfs4_delegreturn_release(void *calldata) | |
4221 | { | |
fe650407 TM |
4222 | kfree(calldata); |
4223 | } | |
4224 | ||
938e1010 AA |
4225 | #if defined(CONFIG_NFS_V4_1) |
4226 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4227 | { | |
4228 | struct nfs4_delegreturndata *d_data; | |
4229 | ||
4230 | d_data = (struct nfs4_delegreturndata *)data; | |
4231 | ||
035168ab | 4232 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 4233 | &d_data->args.seq_args, |
9d12b216 | 4234 | &d_data->res.seq_res, task)) |
938e1010 AA |
4235 | return; |
4236 | rpc_call_start(task); | |
4237 | } | |
4238 | #endif /* CONFIG_NFS_V4_1 */ | |
4239 | ||
c8d149f3 | 4240 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4241 | #if defined(CONFIG_NFS_V4_1) |
4242 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4243 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4244 | .rpc_call_done = nfs4_delegreturn_done, |
4245 | .rpc_release = nfs4_delegreturn_release, | |
4246 | }; | |
4247 | ||
e6f81075 | 4248 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4249 | { |
4250 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4251 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4252 | struct rpc_task *task; |
5138fde0 TM |
4253 | struct rpc_message msg = { |
4254 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4255 | .rpc_cred = cred, | |
4256 | }; | |
c970aa85 TM |
4257 | struct rpc_task_setup task_setup_data = { |
4258 | .rpc_client = server->client, | |
5138fde0 | 4259 | .rpc_message = &msg, |
c970aa85 TM |
4260 | .callback_ops = &nfs4_delegreturn_ops, |
4261 | .flags = RPC_TASK_ASYNC, | |
4262 | }; | |
e6f81075 | 4263 | int status = 0; |
fe650407 | 4264 | |
8535b2be | 4265 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4266 | if (data == NULL) |
4267 | return -ENOMEM; | |
9d12b216 | 4268 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4269 | data->args.fhandle = &data->fh; |
4270 | data->args.stateid = &data->stateid; | |
9e907fec | 4271 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4272 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4273 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4274 | data->res.fattr = &data->fattr; |
4275 | data->res.server = server; | |
5138fde0 | 4276 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4277 | data->timestamp = jiffies; |
fe650407 TM |
4278 | data->rpc_status = 0; |
4279 | ||
c970aa85 | 4280 | task_setup_data.callback_data = data; |
1174dd1f TM |
4281 | msg.rpc_argp = &data->args; |
4282 | msg.rpc_resp = &data->res; | |
c970aa85 | 4283 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4284 | if (IS_ERR(task)) |
fe650407 | 4285 | return PTR_ERR(task); |
e6f81075 TM |
4286 | if (!issync) |
4287 | goto out; | |
fe650407 | 4288 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4289 | if (status != 0) |
4290 | goto out; | |
4291 | status = data->rpc_status; | |
e144cbcc TM |
4292 | if (status == 0) |
4293 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4294 | else | |
4295 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4296 | out: |
e6b3c4db | 4297 | rpc_put_task(task); |
fe650407 | 4298 | return status; |
1da177e4 LT |
4299 | } |
4300 | ||
e6f81075 | 4301 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4302 | { |
4303 | struct nfs_server *server = NFS_SERVER(inode); | |
4304 | struct nfs4_exception exception = { }; | |
4305 | int err; | |
4306 | do { | |
e6f81075 | 4307 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4308 | switch (err) { |
4309 | case -NFS4ERR_STALE_STATEID: | |
4310 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4311 | case 0: |
4312 | return 0; | |
4313 | } | |
4314 | err = nfs4_handle_exception(server, err, &exception); | |
4315 | } while (exception.retry); | |
4316 | return err; | |
4317 | } | |
4318 | ||
4319 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4320 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4321 | ||
4322 | /* | |
4323 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4324 | */ | |
4325 | static unsigned long | |
4326 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4327 | { | |
d310310c | 4328 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4329 | timeout <<= 1; |
4330 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4331 | return NFS4_LOCK_MAXTIMEOUT; | |
4332 | return timeout; | |
4333 | } | |
4334 | ||
1da177e4 LT |
4335 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4336 | { | |
4337 | struct inode *inode = state->inode; | |
4338 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4339 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4340 | struct nfs_lockt_args arg = { |
1da177e4 | 4341 | .fh = NFS_FH(inode), |
911d1aaf | 4342 | .fl = request, |
1da177e4 | 4343 | }; |
911d1aaf TM |
4344 | struct nfs_lockt_res res = { |
4345 | .denied = request, | |
1da177e4 LT |
4346 | }; |
4347 | struct rpc_message msg = { | |
4348 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4349 | .rpc_argp = &arg, | |
4350 | .rpc_resp = &res, | |
4351 | .rpc_cred = state->owner->so_cred, | |
4352 | }; | |
1da177e4 LT |
4353 | struct nfs4_lock_state *lsp; |
4354 | int status; | |
4355 | ||
911d1aaf | 4356 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4357 | status = nfs4_set_lock_state(state, request); |
4358 | if (status != 0) | |
4359 | goto out; | |
4360 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4361 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4362 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4363 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4364 | switch (status) { |
4365 | case 0: | |
4366 | request->fl_type = F_UNLCK; | |
4367 | break; | |
4368 | case -NFS4ERR_DENIED: | |
4369 | status = 0; | |
1da177e4 | 4370 | } |
70cc6487 | 4371 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4372 | out: |
1da177e4 LT |
4373 | return status; |
4374 | } | |
4375 | ||
4376 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4377 | { | |
4378 | struct nfs4_exception exception = { }; | |
4379 | int err; | |
4380 | ||
4381 | do { | |
4382 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4383 | _nfs4_proc_getlk(state, cmd, request), | |
4384 | &exception); | |
4385 | } while (exception.retry); | |
4386 | return err; | |
4387 | } | |
4388 | ||
4389 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4390 | { | |
4391 | int res = 0; | |
4392 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4393 | case FL_POSIX: | |
4394 | res = posix_lock_file_wait(file, fl); | |
4395 | break; | |
4396 | case FL_FLOCK: | |
4397 | res = flock_lock_file_wait(file, fl); | |
4398 | break; | |
4399 | default: | |
4400 | BUG(); | |
4401 | } | |
1da177e4 LT |
4402 | return res; |
4403 | } | |
4404 | ||
faf5f49c | 4405 | struct nfs4_unlockdata { |
911d1aaf TM |
4406 | struct nfs_locku_args arg; |
4407 | struct nfs_locku_res res; | |
faf5f49c TM |
4408 | struct nfs4_lock_state *lsp; |
4409 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4410 | struct file_lock fl; |
4411 | const struct nfs_server *server; | |
26e976a8 | 4412 | unsigned long timestamp; |
faf5f49c TM |
4413 | }; |
4414 | ||
911d1aaf TM |
4415 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4416 | struct nfs_open_context *ctx, | |
4417 | struct nfs4_lock_state *lsp, | |
4418 | struct nfs_seqid *seqid) | |
4419 | { | |
4420 | struct nfs4_unlockdata *p; | |
4421 | struct inode *inode = lsp->ls_state->inode; | |
4422 | ||
8535b2be | 4423 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4424 | if (p == NULL) |
4425 | return NULL; | |
4426 | p->arg.fh = NFS_FH(inode); | |
4427 | p->arg.fl = &p->fl; | |
4428 | p->arg.seqid = seqid; | |
c1d51931 | 4429 | p->res.seqid = seqid; |
911d1aaf TM |
4430 | p->arg.stateid = &lsp->ls_stateid; |
4431 | p->lsp = lsp; | |
4432 | atomic_inc(&lsp->ls_count); | |
4433 | /* Ensure we don't close file until we're done freeing locks! */ | |
4434 | p->ctx = get_nfs_open_context(ctx); | |
4435 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4436 | p->server = NFS_SERVER(inode); | |
4437 | return p; | |
4438 | } | |
4439 | ||
06f814a3 | 4440 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4441 | { |
963d8fe5 | 4442 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4443 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4444 | nfs4_put_lock_state(calldata->lsp); |
4445 | put_nfs_open_context(calldata->ctx); | |
4446 | kfree(calldata); | |
faf5f49c TM |
4447 | } |
4448 | ||
963d8fe5 | 4449 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4450 | { |
963d8fe5 | 4451 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4452 | |
14516c3a TM |
4453 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4454 | return; | |
faf5f49c TM |
4455 | switch (task->tk_status) { |
4456 | case 0: | |
f597c537 TM |
4457 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4458 | &calldata->res.stateid); | |
26e976a8 | 4459 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4460 | break; |
9e33bed5 TM |
4461 | case -NFS4ERR_BAD_STATEID: |
4462 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4463 | case -NFS4ERR_STALE_STATEID: |
4464 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4465 | break; |
4466 | default: | |
9e33bed5 | 4467 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4468 | rpc_restart_call_prepare(task); |
faf5f49c | 4469 | } |
faf5f49c TM |
4470 | } |
4471 | ||
4ce70ada | 4472 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4473 | { |
4ce70ada | 4474 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4475 | |
911d1aaf | 4476 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c | 4477 | return; |
795a88c9 | 4478 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 TM |
4479 | /* Note: exit _without_ running nfs4_locku_done */ |
4480 | task->tk_action = NULL; | |
faf5f49c TM |
4481 | return; |
4482 | } | |
26e976a8 | 4483 | calldata->timestamp = jiffies; |
035168ab | 4484 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4485 | &calldata->arg.seq_args, |
9d12b216 | 4486 | &calldata->res.seq_res, task)) |
a893693c | 4487 | return; |
5138fde0 | 4488 | rpc_call_start(task); |
faf5f49c TM |
4489 | } |
4490 | ||
963d8fe5 | 4491 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4492 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4493 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4494 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4495 | }; |
4496 | ||
a5d16a4d TM |
4497 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4498 | struct nfs_open_context *ctx, | |
4499 | struct nfs4_lock_state *lsp, | |
4500 | struct nfs_seqid *seqid) | |
4501 | { | |
4502 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4503 | struct rpc_message msg = { |
4504 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4505 | .rpc_cred = ctx->cred, | |
4506 | }; | |
c970aa85 TM |
4507 | struct rpc_task_setup task_setup_data = { |
4508 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4509 | .rpc_message = &msg, |
c970aa85 | 4510 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4511 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4512 | .flags = RPC_TASK_ASYNC, |
4513 | }; | |
a5d16a4d | 4514 | |
137d6aca FF |
4515 | /* Ensure this is an unlock - when canceling a lock, the |
4516 | * canceled lock is passed in, and it won't be an unlock. | |
4517 | */ | |
4518 | fl->fl_type = F_UNLCK; | |
4519 | ||
a5d16a4d TM |
4520 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4521 | if (data == NULL) { | |
4522 | nfs_free_seqid(seqid); | |
4523 | return ERR_PTR(-ENOMEM); | |
4524 | } | |
4525 | ||
9d12b216 | 4526 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4527 | msg.rpc_argp = &data->arg; |
4528 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4529 | task_setup_data.callback_data = data; |
4530 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4531 | } |
4532 | ||
faf5f49c TM |
4533 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4534 | { | |
19e03c57 | 4535 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4536 | struct nfs_seqid *seqid; |
1da177e4 | 4537 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4538 | struct rpc_task *task; |
4539 | int status = 0; | |
536ff0f8 | 4540 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4541 | |
8d0a8a9d | 4542 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4543 | /* Unlock _before_ we do the RPC call */ |
4544 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4545 | down_read(&nfsi->rwsem); |
4546 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4547 | up_read(&nfsi->rwsem); | |
9b073574 | 4548 | goto out; |
19e03c57 TM |
4549 | } |
4550 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4551 | if (status != 0) |
9b073574 TM |
4552 | goto out; |
4553 | /* Is this a delegated lock? */ | |
4554 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4555 | goto out; | |
8d0a8a9d | 4556 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4557 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4558 | status = -ENOMEM; |
911d1aaf | 4559 | if (seqid == NULL) |
9b073574 | 4560 | goto out; |
cd3758e3 | 4561 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4562 | status = PTR_ERR(task); |
4563 | if (IS_ERR(task)) | |
9b073574 | 4564 | goto out; |
a5d16a4d | 4565 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4566 | rpc_put_task(task); |
9b073574 | 4567 | out: |
536ff0f8 | 4568 | request->fl_flags = fl_flags; |
1da177e4 LT |
4569 | return status; |
4570 | } | |
4571 | ||
a5d16a4d TM |
4572 | struct nfs4_lockdata { |
4573 | struct nfs_lock_args arg; | |
4574 | struct nfs_lock_res res; | |
4575 | struct nfs4_lock_state *lsp; | |
4576 | struct nfs_open_context *ctx; | |
4577 | struct file_lock fl; | |
26e976a8 | 4578 | unsigned long timestamp; |
a5d16a4d TM |
4579 | int rpc_status; |
4580 | int cancelled; | |
66179efe | 4581 | struct nfs_server *server; |
a5d16a4d TM |
4582 | }; |
4583 | ||
4584 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4585 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4586 | gfp_t gfp_mask) | |
1da177e4 | 4587 | { |
a5d16a4d TM |
4588 | struct nfs4_lockdata *p; |
4589 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4590 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4591 | |
8535b2be | 4592 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4593 | if (p == NULL) |
4594 | return NULL; | |
4595 | ||
4596 | p->arg.fh = NFS_FH(inode); | |
4597 | p->arg.fl = &p->fl; | |
8535b2be | 4598 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4599 | if (p->arg.open_seqid == NULL) |
4600 | goto out_free; | |
8535b2be | 4601 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4602 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4603 | goto out_free_seqid; |
a5d16a4d | 4604 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4605 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4606 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4607 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4608 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4609 | p->lsp = lsp; |
66179efe | 4610 | p->server = server; |
a5d16a4d TM |
4611 | atomic_inc(&lsp->ls_count); |
4612 | p->ctx = get_nfs_open_context(ctx); | |
4613 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4614 | return p; | |
2f74c0a0 TM |
4615 | out_free_seqid: |
4616 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4617 | out_free: |
4618 | kfree(p); | |
4619 | return NULL; | |
4620 | } | |
4621 | ||
4622 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4623 | { | |
4624 | struct nfs4_lockdata *data = calldata; | |
4625 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4626 | |
3110ff80 | 4627 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4628 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4629 | return; | |
a5d16a4d TM |
4630 | /* Do we need to do an open_to_lock_owner? */ |
4631 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4632 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4633 | return; | |
a5d16a4d TM |
4634 | data->arg.open_stateid = &state->stateid; |
4635 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4636 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4637 | } else |
4638 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4639 | data->timestamp = jiffies; |
035168ab TM |
4640 | if (nfs4_setup_sequence(data->server, |
4641 | &data->arg.seq_args, | |
9d12b216 | 4642 | &data->res.seq_res, task)) |
66179efe | 4643 | return; |
5138fde0 | 4644 | rpc_call_start(task); |
3110ff80 | 4645 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4646 | } |
4647 | ||
b257957e AB |
4648 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4649 | { | |
4650 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4651 | nfs4_lock_prepare(task, calldata); | |
4652 | } | |
4653 | ||
a5d16a4d TM |
4654 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4655 | { | |
4656 | struct nfs4_lockdata *data = calldata; | |
4657 | ||
3110ff80 | 4658 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4659 | |
14516c3a TM |
4660 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4661 | return; | |
66179efe | 4662 | |
a5d16a4d | 4663 | data->rpc_status = task->tk_status; |
a5d16a4d | 4664 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4665 | if (data->rpc_status == 0) |
4666 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4667 | else | |
4668 | goto out; | |
4669 | } | |
4670 | if (data->rpc_status == 0) { | |
f597c537 | 4671 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4672 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4673 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4674 | } |
a5d16a4d | 4675 | out: |
3110ff80 | 4676 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4677 | } |
4678 | ||
4679 | static void nfs4_lock_release(void *calldata) | |
4680 | { | |
4681 | struct nfs4_lockdata *data = calldata; | |
4682 | ||
3110ff80 | 4683 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4684 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4685 | if (data->cancelled != 0) { |
4686 | struct rpc_task *task; | |
4687 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4688 | data->arg.lock_seqid); | |
4689 | if (!IS_ERR(task)) | |
bf294b41 | 4690 | rpc_put_task_async(task); |
3110ff80 | 4691 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4692 | } else |
4693 | nfs_free_seqid(data->arg.lock_seqid); | |
4694 | nfs4_put_lock_state(data->lsp); | |
4695 | put_nfs_open_context(data->ctx); | |
4696 | kfree(data); | |
3110ff80 | 4697 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4698 | } |
4699 | ||
4700 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4701 | .rpc_call_prepare = nfs4_lock_prepare, | |
4702 | .rpc_call_done = nfs4_lock_done, | |
4703 | .rpc_release = nfs4_lock_release, | |
4704 | }; | |
4705 | ||
b257957e AB |
4706 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4707 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4708 | .rpc_call_done = nfs4_lock_done, | |
4709 | .rpc_release = nfs4_lock_release, | |
4710 | }; | |
4711 | ||
2bee72a6 TM |
4712 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4713 | { | |
2bee72a6 TM |
4714 | switch (error) { |
4715 | case -NFS4ERR_ADMIN_REVOKED: | |
4716 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4717 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4718 | if (new_lock_owner != 0 || |
795a88c9 | 4719 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4720 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4721 | break; |
4722 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4723 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4724 | case -NFS4ERR_EXPIRED: |
4725 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4726 | }; |
4727 | } | |
4728 | ||
afe6c27c | 4729 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4730 | { |
4731 | struct nfs4_lockdata *data; | |
4732 | struct rpc_task *task; | |
5138fde0 TM |
4733 | struct rpc_message msg = { |
4734 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4735 | .rpc_cred = state->owner->so_cred, | |
4736 | }; | |
c970aa85 TM |
4737 | struct rpc_task_setup task_setup_data = { |
4738 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4739 | .rpc_message = &msg, |
c970aa85 | 4740 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4741 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4742 | .flags = RPC_TASK_ASYNC, |
4743 | }; | |
a5d16a4d TM |
4744 | int ret; |
4745 | ||
3110ff80 | 4746 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4747 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4748 | fl->fl_u.nfs4_fl.owner, |
4749 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4750 | if (data == NULL) |
4751 | return -ENOMEM; | |
4752 | if (IS_SETLKW(cmd)) | |
4753 | data->arg.block = 1; | |
b257957e AB |
4754 | if (recovery_type > NFS_LOCK_NEW) { |
4755 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4756 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4757 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4758 | } | |
9d12b216 | 4759 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4760 | msg.rpc_argp = &data->arg; |
4761 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4762 | task_setup_data.callback_data = data; |
4763 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4764 | if (IS_ERR(task)) |
a5d16a4d | 4765 | return PTR_ERR(task); |
a5d16a4d TM |
4766 | ret = nfs4_wait_for_completion_rpc_task(task); |
4767 | if (ret == 0) { | |
4768 | ret = data->rpc_status; | |
2bee72a6 TM |
4769 | if (ret) |
4770 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4771 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4772 | } else |
4773 | data->cancelled = 1; | |
e6b3c4db | 4774 | rpc_put_task(task); |
3110ff80 | 4775 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4776 | return ret; |
1da177e4 LT |
4777 | } |
4778 | ||
4779 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4780 | { | |
202b50dc | 4781 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4782 | struct nfs4_exception exception = { |
4783 | .inode = state->inode, | |
4784 | }; | |
202b50dc TM |
4785 | int err; |
4786 | ||
4787 | do { | |
42a2d13e TM |
4788 | /* Cache the lock if possible... */ |
4789 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4790 | return 0; | |
afe6c27c | 4791 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4792 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4793 | break; |
4794 | nfs4_handle_exception(server, err, &exception); | |
4795 | } while (exception.retry); | |
4796 | return err; | |
1da177e4 LT |
4797 | } |
4798 | ||
4799 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4800 | { | |
202b50dc | 4801 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4802 | struct nfs4_exception exception = { |
4803 | .inode = state->inode, | |
4804 | }; | |
202b50dc TM |
4805 | int err; |
4806 | ||
6bfc93ef TM |
4807 | err = nfs4_set_lock_state(state, request); |
4808 | if (err != 0) | |
4809 | return err; | |
202b50dc | 4810 | do { |
42a2d13e TM |
4811 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4812 | return 0; | |
afe6c27c | 4813 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4814 | switch (err) { |
4815 | default: | |
4816 | goto out; | |
4817 | case -NFS4ERR_GRACE: | |
4818 | case -NFS4ERR_DELAY: | |
4819 | nfs4_handle_exception(server, err, &exception); | |
4820 | err = 0; | |
4821 | } | |
202b50dc | 4822 | } while (exception.retry); |
a9ed2e25 | 4823 | out: |
202b50dc | 4824 | return err; |
1da177e4 LT |
4825 | } |
4826 | ||
f062eb6c | 4827 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
4828 | /** |
4829 | * nfs41_check_expired_locks - possibly free a lock stateid | |
4830 | * | |
4831 | * @state: NFSv4 state for an inode | |
4832 | * | |
4833 | * Returns NFS_OK if recovery for this stateid is now finished. | |
4834 | * Otherwise a negative NFS4ERR value is returned. | |
4835 | */ | |
b01dd1d8 | 4836 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4837 | { |
eb64cf96 | 4838 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 4839 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
4840 | struct nfs_server *server = NFS_SERVER(state->inode); |
4841 | ||
b01dd1d8 | 4842 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 4843 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
b01dd1d8 BS |
4844 | status = nfs41_test_stateid(server, &lsp->ls_stateid); |
4845 | if (status != NFS_OK) { | |
3e60ffdd CL |
4846 | /* Free the stateid unless the server |
4847 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
4848 | if (status != -NFS4ERR_BAD_STATEID) |
4849 | nfs41_free_stateid(server, | |
4850 | &lsp->ls_stateid); | |
795a88c9 | 4851 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
4852 | ret = status; |
4853 | } | |
4854 | } | |
4855 | }; | |
4856 | ||
4857 | return ret; | |
4858 | } | |
4859 | ||
4860 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4861 | { | |
4862 | int status = NFS_OK; | |
4863 | ||
4864 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4865 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
4866 | if (status != NFS_OK) |
4867 | status = nfs4_lock_expired(state, request); | |
4868 | return status; | |
f062eb6c BS |
4869 | } |
4870 | #endif | |
4871 | ||
1da177e4 LT |
4872 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4873 | { | |
19e03c57 | 4874 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4875 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4876 | int status = -ENOLCK; |
1da177e4 | 4877 | |
8e469ebd TM |
4878 | if ((fl_flags & FL_POSIX) && |
4879 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4880 | goto out; | |
6bfc93ef | 4881 | /* Is this a delegated open? */ |
6bfc93ef TM |
4882 | status = nfs4_set_lock_state(state, request); |
4883 | if (status != 0) | |
4884 | goto out; | |
01c3b861 TM |
4885 | request->fl_flags |= FL_ACCESS; |
4886 | status = do_vfs_lock(request->fl_file, request); | |
4887 | if (status < 0) | |
4888 | goto out; | |
19e03c57 | 4889 | down_read(&nfsi->rwsem); |
01c3b861 | 4890 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4891 | /* Yes: cache locks! */ |
01c3b861 | 4892 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4893 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4894 | status = do_vfs_lock(request->fl_file, request); | |
4895 | goto out_unlock; | |
01c3b861 | 4896 | } |
afe6c27c | 4897 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4898 | if (status != 0) |
01c3b861 | 4899 | goto out_unlock; |
6bfc93ef | 4900 | /* Note: we always want to sleep here! */ |
01c3b861 | 4901 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4902 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4903 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4904 | "manager!\n", __func__); | |
01c3b861 | 4905 | out_unlock: |
19e03c57 | 4906 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4907 | out: |
4908 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4909 | return status; |
4910 | } | |
4911 | ||
4912 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4913 | { | |
a1d0b5ee TM |
4914 | struct nfs4_exception exception = { |
4915 | .state = state, | |
05ffe24f | 4916 | .inode = state->inode, |
a1d0b5ee | 4917 | }; |
1da177e4 LT |
4918 | int err; |
4919 | ||
4920 | do { | |
965b5d67 TM |
4921 | err = _nfs4_proc_setlk(state, cmd, request); |
4922 | if (err == -NFS4ERR_DENIED) | |
4923 | err = -EAGAIN; | |
1da177e4 | 4924 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4925 | err, &exception); |
1da177e4 LT |
4926 | } while (exception.retry); |
4927 | return err; | |
4928 | } | |
4929 | ||
4930 | static int | |
4931 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4932 | { | |
4933 | struct nfs_open_context *ctx; | |
4934 | struct nfs4_state *state; | |
4935 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4936 | int status; | |
4937 | ||
4938 | /* verify open state */ | |
cd3758e3 | 4939 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4940 | state = ctx->state; |
4941 | ||
4942 | if (request->fl_start < 0 || request->fl_end < 0) | |
4943 | return -EINVAL; | |
4944 | ||
d953126a TM |
4945 | if (IS_GETLK(cmd)) { |
4946 | if (state != NULL) | |
4947 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4948 | return 0; | |
4949 | } | |
1da177e4 LT |
4950 | |
4951 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4952 | return -EINVAL; | |
4953 | ||
d953126a TM |
4954 | if (request->fl_type == F_UNLCK) { |
4955 | if (state != NULL) | |
4956 | return nfs4_proc_unlck(state, cmd, request); | |
4957 | return 0; | |
4958 | } | |
1da177e4 | 4959 | |
d953126a TM |
4960 | if (state == NULL) |
4961 | return -ENOLCK; | |
55725513 TM |
4962 | /* |
4963 | * Don't rely on the VFS having checked the file open mode, | |
4964 | * since it won't do this for flock() locks. | |
4965 | */ | |
f44106e2 | 4966 | switch (request->fl_type) { |
55725513 TM |
4967 | case F_RDLCK: |
4968 | if (!(filp->f_mode & FMODE_READ)) | |
4969 | return -EBADF; | |
4970 | break; | |
4971 | case F_WRLCK: | |
4972 | if (!(filp->f_mode & FMODE_WRITE)) | |
4973 | return -EBADF; | |
4974 | } | |
4975 | ||
1da177e4 LT |
4976 | do { |
4977 | status = nfs4_proc_setlk(state, cmd, request); | |
4978 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4979 | break; | |
4980 | timeout = nfs4_set_lock_task_retry(timeout); | |
4981 | status = -ERESTARTSYS; | |
4982 | if (signalled()) | |
4983 | break; | |
4984 | } while(status < 0); | |
1da177e4 LT |
4985 | return status; |
4986 | } | |
4987 | ||
888e694c TM |
4988 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4989 | { | |
4990 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4991 | struct nfs4_exception exception = { }; | |
4992 | int err; | |
4993 | ||
4994 | err = nfs4_set_lock_state(state, fl); | |
4995 | if (err != 0) | |
4996 | goto out; | |
4997 | do { | |
afe6c27c | 4998 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4999 | switch (err) { |
5000 | default: | |
a030889a WAA |
5001 | printk(KERN_ERR "NFS: %s: unhandled error " |
5002 | "%d.\n", __func__, err); | |
d5122201 | 5003 | case 0: |
965b5d67 | 5004 | case -ESTALE: |
d5122201 TM |
5005 | goto out; |
5006 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 5007 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 5008 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 5009 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
5010 | nfs4_schedule_lease_recovery(server->nfs_client); |
5011 | goto out; | |
74e7bb73 RL |
5012 | case -NFS4ERR_BADSESSION: |
5013 | case -NFS4ERR_BADSLOT: | |
5014 | case -NFS4ERR_BAD_HIGH_SLOT: | |
5015 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
5016 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 5017 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
d5122201 | 5018 | goto out; |
965b5d67 TM |
5019 | case -ERESTARTSYS: |
5020 | /* | |
5021 | * The show must go on: exit, but mark the | |
5022 | * stateid as needing recovery. | |
5023 | */ | |
a1d0b5ee | 5024 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
5025 | case -NFS4ERR_ADMIN_REVOKED: |
5026 | case -NFS4ERR_BAD_STATEID: | |
5027 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 5028 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
5029 | err = 0; |
5030 | goto out; | |
168667c4 TM |
5031 | case -EKEYEXPIRED: |
5032 | /* | |
5033 | * User RPCSEC_GSS context has expired. | |
5034 | * We cannot recover this stateid now, so | |
5035 | * skip it and allow recovery thread to | |
5036 | * proceed. | |
5037 | */ | |
5038 | err = 0; | |
5039 | goto out; | |
965b5d67 TM |
5040 | case -ENOMEM: |
5041 | case -NFS4ERR_DENIED: | |
5042 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
5043 | err = 0; | |
5044 | goto out; | |
d5122201 TM |
5045 | case -NFS4ERR_DELAY: |
5046 | break; | |
5047 | } | |
888e694c TM |
5048 | err = nfs4_handle_exception(server, err, &exception); |
5049 | } while (exception.retry); | |
5050 | out: | |
5051 | return err; | |
5052 | } | |
6b3b5496 | 5053 | |
cf470c3e TM |
5054 | struct nfs_release_lockowner_data { |
5055 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5056 | struct nfs_server *server; |
cf470c3e TM |
5057 | struct nfs_release_lockowner_args args; |
5058 | }; | |
5059 | ||
d3c7b7cc TM |
5060 | static void nfs4_release_lockowner_release(void *calldata) |
5061 | { | |
cf470c3e | 5062 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5063 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5064 | kfree(calldata); |
5065 | } | |
5066 | ||
17280175 | 5067 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5068 | .rpc_release = nfs4_release_lockowner_release, |
5069 | }; | |
5070 | ||
cf470c3e | 5071 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
5072 | { |
5073 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 5074 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5075 | struct rpc_message msg = { |
5076 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5077 | }; | |
5078 | ||
5079 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5080 | return -EINVAL; |
5081 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5082 | if (!data) | |
5083 | return -ENOMEM; | |
5084 | data->lsp = lsp; | |
5ae67c4f | 5085 | data->server = server; |
cf470c3e TM |
5086 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5087 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5088 | data->args.lock_owner.s_dev = server->s_dev; | |
5089 | msg.rpc_argp = &data->args; | |
5090 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5091 | return 0; | |
d3c7b7cc TM |
5092 | } |
5093 | ||
aa1870af BF |
5094 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5095 | ||
64c2ce8b AK |
5096 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5097 | const void *buf, size_t buflen, | |
5098 | int flags, int type) | |
6b3b5496 | 5099 | { |
64c2ce8b AK |
5100 | if (strcmp(key, "") != 0) |
5101 | return -EINVAL; | |
4b580ee3 | 5102 | |
64c2ce8b | 5103 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5104 | } |
5105 | ||
64c2ce8b AK |
5106 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5107 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5108 | { |
64c2ce8b AK |
5109 | if (strcmp(key, "") != 0) |
5110 | return -EINVAL; | |
aa1870af | 5111 | |
64c2ce8b | 5112 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5113 | } |
5114 | ||
64c2ce8b AK |
5115 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5116 | size_t list_len, const char *name, | |
5117 | size_t name_len, int type) | |
6b3b5496 | 5118 | { |
64c2ce8b | 5119 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5120 | |
096455a2 BF |
5121 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5122 | return 0; | |
64c2ce8b AK |
5123 | |
5124 | if (list && len <= list_len) | |
5125 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5126 | return len; |
6b3b5496 BF |
5127 | } |
5128 | ||
533eb461 AA |
5129 | /* |
5130 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5131 | */ | |
69aaaae1 TM |
5132 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5133 | { | |
533eb461 AA |
5134 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5135 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5136 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5137 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5138 | return; |
5139 | ||
5140 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5141 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5142 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5143 | fattr->nlink = 2; | |
5144 | } | |
5145 | ||
f05d147f BS |
5146 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5147 | const struct qstr *name, | |
5148 | struct nfs4_fs_locations *fs_locations, | |
5149 | struct page *page) | |
683b57b4 TM |
5150 | { |
5151 | struct nfs_server *server = NFS_SERVER(dir); | |
5152 | u32 bitmask[2] = { | |
361e624f | 5153 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5154 | }; |
5155 | struct nfs4_fs_locations_arg args = { | |
5156 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5157 | .name = name, |
683b57b4 TM |
5158 | .page = page, |
5159 | .bitmask = bitmask, | |
5160 | }; | |
22958463 BH |
5161 | struct nfs4_fs_locations_res res = { |
5162 | .fs_locations = fs_locations, | |
5163 | }; | |
683b57b4 TM |
5164 | struct rpc_message msg = { |
5165 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5166 | .rpc_argp = &args, | |
22958463 | 5167 | .rpc_resp = &res, |
683b57b4 TM |
5168 | }; |
5169 | int status; | |
5170 | ||
3110ff80 | 5171 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5172 | |
5173 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5174 | * is not supported */ | |
5175 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5176 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5177 | else | |
5178 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5179 | ||
c228fd3a | 5180 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5181 | fs_locations->server = server; |
830b8e33 | 5182 | fs_locations->nlocations = 0; |
f05d147f | 5183 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5184 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5185 | return status; |
5186 | } | |
5187 | ||
f05d147f BS |
5188 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5189 | const struct qstr *name, | |
5190 | struct nfs4_fs_locations *fs_locations, | |
5191 | struct page *page) | |
db0a9593 BS |
5192 | { |
5193 | struct nfs4_exception exception = { }; | |
5194 | int err; | |
5195 | do { | |
5196 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5197 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5198 | &exception); |
5199 | } while (exception.retry); | |
5200 | return err; | |
5201 | } | |
5202 | ||
5a5ea0d4 BS |
5203 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5204 | { | |
5205 | int status; | |
5206 | struct nfs4_secinfo_arg args = { | |
5207 | .dir_fh = NFS_FH(dir), | |
5208 | .name = name, | |
5209 | }; | |
5210 | struct nfs4_secinfo_res res = { | |
5211 | .flavors = flavors, | |
5212 | }; | |
5213 | struct rpc_message msg = { | |
5214 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5215 | .rpc_argp = &args, | |
5216 | .rpc_resp = &res, | |
5217 | }; | |
5218 | ||
5219 | dprintk("NFS call secinfo %s\n", name->name); | |
5220 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5221 | dprintk("NFS reply secinfo: %d\n", status); | |
5222 | return status; | |
5223 | } | |
5224 | ||
72de53ec BS |
5225 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5226 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5227 | { |
5228 | struct nfs4_exception exception = { }; | |
5229 | int err; | |
5230 | do { | |
5231 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5232 | _nfs4_proc_secinfo(dir, name, flavors), | |
5233 | &exception); | |
5234 | } while (exception.retry); | |
5235 | return err; | |
5236 | } | |
5237 | ||
557134a3 | 5238 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5239 | /* |
5240 | * Check the exchange flags returned by the server for invalid flags, having | |
5241 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5242 | * DS flags set. | |
5243 | */ | |
5244 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5245 | { | |
5246 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5247 | goto out_inval; | |
5248 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5249 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5250 | goto out_inval; | |
5251 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5252 | goto out_inval; | |
5253 | return NFS_OK; | |
5254 | out_inval: | |
5255 | return -NFS4ERR_INVAL; | |
5256 | } | |
5257 | ||
78fe0f41 | 5258 | static bool |
79d4e1f0 CL |
5259 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5260 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5261 | { |
5262 | if (a->server_scope_sz == b->server_scope_sz && | |
5263 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5264 | return true; | |
5265 | ||
5266 | return false; | |
5267 | } | |
5268 | ||
7c44f1ae WAA |
5269 | /* |
5270 | * nfs4_proc_bind_conn_to_session() | |
5271 | * | |
5272 | * The 4.1 client currently uses the same TCP connection for the | |
5273 | * fore and backchannel. | |
5274 | */ | |
2cf047c9 | 5275 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5276 | { |
5277 | int status; | |
5278 | struct nfs41_bind_conn_to_session_res res; | |
5279 | struct rpc_message msg = { | |
5280 | .rpc_proc = | |
5281 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5282 | .rpc_argp = clp, | |
5283 | .rpc_resp = &res, | |
2cf047c9 | 5284 | .rpc_cred = cred, |
7c44f1ae WAA |
5285 | }; |
5286 | ||
5287 | dprintk("--> %s\n", __func__); | |
5288 | BUG_ON(clp == NULL); | |
5289 | ||
5290 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5291 | if (unlikely(res.session == NULL)) { | |
5292 | status = -ENOMEM; | |
5293 | goto out; | |
5294 | } | |
5295 | ||
5296 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5297 | if (status == 0) { | |
5298 | if (memcmp(res.session->sess_id.data, | |
5299 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5300 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5301 | status = -EIO; | |
5302 | goto out_session; | |
5303 | } | |
5304 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5305 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5306 | __func__); | |
5307 | status = -EIO; | |
5308 | goto out_session; | |
5309 | } | |
5310 | if (res.use_conn_in_rdma_mode) { | |
5311 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5312 | __func__); | |
5313 | status = -EIO; | |
5314 | goto out_session; | |
5315 | } | |
5316 | } | |
5317 | out_session: | |
5318 | kfree(res.session); | |
5319 | out: | |
5320 | dprintk("<-- %s status= %d\n", __func__, status); | |
5321 | return status; | |
5322 | } | |
5323 | ||
99fe60d0 BH |
5324 | /* |
5325 | * nfs4_proc_exchange_id() | |
5326 | * | |
6bbb4ae8 CL |
5327 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5328 | * | |
99fe60d0 BH |
5329 | * Since the clientid has expired, all compounds using sessions |
5330 | * associated with the stale clientid will be returning | |
5331 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5332 | * be in some phase of session reset. | |
5333 | */ | |
4d643d1d | 5334 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5335 | { |
5336 | nfs4_verifier verifier; | |
5337 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5338 | .verifier = &verifier, |
99fe60d0 | 5339 | .client = clp, |
357f54d6 | 5340 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5341 | }; |
5342 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5343 | 0 |
99fe60d0 BH |
5344 | }; |
5345 | int status; | |
5346 | struct rpc_message msg = { | |
5347 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5348 | .rpc_argp = &args, | |
5349 | .rpc_resp = &res, | |
5350 | .rpc_cred = cred, | |
5351 | }; | |
99fe60d0 | 5352 | |
f092075d | 5353 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5354 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5355 | sizeof(args.id)); | |
6bbb4ae8 CL |
5356 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5357 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5358 | args.id_len, args.id); | |
99fe60d0 | 5359 | |
acdeb69d | 5360 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5361 | GFP_NOFS); |
acdeb69d | 5362 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5363 | status = -ENOMEM; |
5364 | goto out; | |
5365 | } | |
78fe0f41 | 5366 | |
79d4e1f0 | 5367 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5368 | GFP_NOFS); |
177313f1 | 5369 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5370 | status = -ENOMEM; |
acdeb69d | 5371 | goto out_server_owner; |
abe9a6d5 | 5372 | } |
78fe0f41 | 5373 | |
bbafffd2 | 5374 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5375 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5376 | status = -ENOMEM; |
5377 | goto out_server_scope; | |
5378 | } | |
5379 | ||
1bd714f2 | 5380 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5381 | if (status == 0) |
32b01310 | 5382 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5383 | |
acdeb69d | 5384 | if (status == 0) { |
32b01310 TM |
5385 | clp->cl_clientid = res.clientid; |
5386 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5387 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5388 | clp->cl_seqid = res.seqid; | |
5389 | ||
acdeb69d CL |
5390 | kfree(clp->cl_serverowner); |
5391 | clp->cl_serverowner = res.server_owner; | |
5392 | res.server_owner = NULL; | |
78fe0f41 | 5393 | |
7d2ed9ac | 5394 | /* use the most recent implementation id */ |
59155546 CL |
5395 | kfree(clp->cl_implid); |
5396 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5397 | |
177313f1 | 5398 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5399 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5400 | res.server_scope)) { |
5401 | dprintk("%s: server_scope mismatch detected\n", | |
5402 | __func__); | |
5403 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5404 | kfree(clp->cl_serverscope); |
5405 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5406 | } |
5407 | ||
177313f1 | 5408 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5409 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5410 | goto out; |
5411 | } | |
32b01310 TM |
5412 | } else |
5413 | kfree(res.impl_id); | |
7d2ed9ac | 5414 | |
acdeb69d CL |
5415 | out_server_owner: |
5416 | kfree(res.server_owner); | |
7d2ed9ac | 5417 | out_server_scope: |
abe9a6d5 WAA |
5418 | kfree(res.server_scope); |
5419 | out: | |
177313f1 | 5420 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5421 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5422 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5423 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5424 | clp->cl_implid->date.seconds, |
5425 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5426 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5427 | return status; |
5428 | } | |
5429 | ||
66245539 TM |
5430 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5431 | struct rpc_cred *cred) | |
5432 | { | |
5433 | struct rpc_message msg = { | |
5434 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5435 | .rpc_argp = clp, | |
5436 | .rpc_cred = cred, | |
5437 | }; | |
5438 | int status; | |
5439 | ||
5440 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5441 | if (status) | |
02c67525 | 5442 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5443 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5444 | return status; | |
5445 | } | |
5446 | ||
5447 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5448 | struct rpc_cred *cred) | |
5449 | { | |
5450 | unsigned int loop; | |
5451 | int ret; | |
5452 | ||
5453 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5454 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5455 | switch (ret) { | |
5456 | case -NFS4ERR_DELAY: | |
5457 | case -NFS4ERR_CLIENTID_BUSY: | |
5458 | ssleep(1); | |
5459 | break; | |
5460 | default: | |
5461 | return ret; | |
5462 | } | |
5463 | } | |
5464 | return 0; | |
5465 | } | |
5466 | ||
5467 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5468 | { | |
5469 | struct rpc_cred *cred; | |
5470 | int ret = 0; | |
5471 | ||
5472 | if (clp->cl_mvops->minor_version < 1) | |
5473 | goto out; | |
5474 | if (clp->cl_exchange_flags == 0) | |
5475 | goto out; | |
05f4c350 CL |
5476 | if (clp->cl_preserve_clid) |
5477 | goto out; | |
66245539 TM |
5478 | cred = nfs4_get_exchange_id_cred(clp); |
5479 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5480 | if (cred) | |
5481 | put_rpccred(cred); | |
5482 | switch (ret) { | |
5483 | case 0: | |
5484 | case -NFS4ERR_STALE_CLIENTID: | |
5485 | clp->cl_exchange_flags = 0; | |
5486 | } | |
5487 | out: | |
5488 | return ret; | |
5489 | } | |
5490 | ||
2050f0cc AA |
5491 | struct nfs4_get_lease_time_data { |
5492 | struct nfs4_get_lease_time_args *args; | |
5493 | struct nfs4_get_lease_time_res *res; | |
5494 | struct nfs_client *clp; | |
5495 | }; | |
5496 | ||
5497 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5498 | void *calldata) | |
5499 | { | |
5500 | int ret; | |
5501 | struct nfs4_get_lease_time_data *data = | |
5502 | (struct nfs4_get_lease_time_data *)calldata; | |
5503 | ||
5504 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5505 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5506 | /* just setup sequence, do not trigger session recovery |
5507 | since we're invoked within one */ | |
5508 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5509 | &data->args->la_seq_args, |
9d12b216 | 5510 | &data->res->lr_seq_res, task); |
2050f0cc AA |
5511 | |
5512 | BUG_ON(ret == -EAGAIN); | |
5513 | rpc_call_start(task); | |
5514 | dprintk("<-- %s\n", __func__); | |
5515 | } | |
5516 | ||
5517 | /* | |
5518 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5519 | * from sequence operation or clientid errors. | |
5520 | */ | |
5521 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5522 | { | |
5523 | struct nfs4_get_lease_time_data *data = | |
5524 | (struct nfs4_get_lease_time_data *)calldata; | |
5525 | ||
5526 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5527 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5528 | return; | |
2050f0cc AA |
5529 | switch (task->tk_status) { |
5530 | case -NFS4ERR_DELAY: | |
5531 | case -NFS4ERR_GRACE: | |
5532 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5533 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5534 | task->tk_status = 0; | |
a8a4ae3a AA |
5535 | /* fall through */ |
5536 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5537 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5538 | return; |
5539 | } | |
2050f0cc AA |
5540 | dprintk("<-- %s\n", __func__); |
5541 | } | |
5542 | ||
17280175 | 5543 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5544 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5545 | .rpc_call_done = nfs4_get_lease_time_done, | |
5546 | }; | |
5547 | ||
5548 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5549 | { | |
5550 | struct rpc_task *task; | |
5551 | struct nfs4_get_lease_time_args args; | |
5552 | struct nfs4_get_lease_time_res res = { | |
5553 | .lr_fsinfo = fsinfo, | |
5554 | }; | |
5555 | struct nfs4_get_lease_time_data data = { | |
5556 | .args = &args, | |
5557 | .res = &res, | |
5558 | .clp = clp, | |
5559 | }; | |
5560 | struct rpc_message msg = { | |
5561 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5562 | .rpc_argp = &args, | |
5563 | .rpc_resp = &res, | |
5564 | }; | |
5565 | struct rpc_task_setup task_setup = { | |
5566 | .rpc_client = clp->cl_rpcclient, | |
5567 | .rpc_message = &msg, | |
5568 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5569 | .callback_data = &data, |
5570 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5571 | }; |
5572 | int status; | |
5573 | ||
9d12b216 | 5574 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5575 | dprintk("--> %s\n", __func__); |
5576 | task = rpc_run_task(&task_setup); | |
5577 | ||
5578 | if (IS_ERR(task)) | |
5579 | status = PTR_ERR(task); | |
5580 | else { | |
5581 | status = task->tk_status; | |
5582 | rpc_put_task(task); | |
5583 | } | |
5584 | dprintk("<-- %s return %d\n", __func__, status); | |
5585 | ||
5586 | return status; | |
5587 | } | |
5588 | ||
f86f36a6 TM |
5589 | static struct nfs4_slot *nfs4_alloc_slots(u32 max_slots, gfp_t gfp_flags) |
5590 | { | |
5591 | return kcalloc(max_slots, sizeof(struct nfs4_slot), gfp_flags); | |
5592 | } | |
5593 | ||
5594 | static void nfs4_add_and_init_slots(struct nfs4_slot_table *tbl, | |
5595 | struct nfs4_slot *new, | |
5596 | u32 max_slots, | |
5597 | u32 ivalue) | |
5598 | { | |
5599 | struct nfs4_slot *old = NULL; | |
5600 | u32 i; | |
5601 | ||
5602 | spin_lock(&tbl->slot_tbl_lock); | |
5603 | if (new) { | |
5604 | old = tbl->slots; | |
5605 | tbl->slots = new; | |
5606 | tbl->max_slots = max_slots; | |
5607 | } | |
5608 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5609 | for (i = 0; i < tbl->max_slots; i++) | |
5610 | tbl->slots[i].seq_nr = ivalue; | |
5611 | spin_unlock(&tbl->slot_tbl_lock); | |
5612 | kfree(old); | |
5613 | } | |
5614 | ||
b73dafa7 | 5615 | /* |
f86f36a6 | 5616 | * (re)Initialise a slot table |
b73dafa7 | 5617 | */ |
f86f36a6 TM |
5618 | static int nfs4_realloc_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5619 | u32 ivalue) | |
ac72b7b3 | 5620 | { |
104aeba4 | 5621 | struct nfs4_slot *new = NULL; |
f86f36a6 | 5622 | int ret = -ENOMEM; |
ac72b7b3 | 5623 | |
104aeba4 AA |
5624 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5625 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5626 | |
104aeba4 AA |
5627 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5628 | if (max_reqs != tbl->max_slots) { | |
f86f36a6 | 5629 | new = nfs4_alloc_slots(max_reqs, GFP_NOFS); |
104aeba4 AA |
5630 | if (!new) |
5631 | goto out; | |
104aeba4 | 5632 | } |
f86f36a6 TM |
5633 | ret = 0; |
5634 | ||
5635 | nfs4_add_and_init_slots(tbl, new, max_reqs, ivalue); | |
ac72b7b3 AA |
5636 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, |
5637 | tbl, tbl->slots, tbl->max_slots); | |
5638 | out: | |
5639 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5640 | return ret; | |
5641 | } | |
5642 | ||
f8625a6a RL |
5643 | /* Destroy the slot table */ |
5644 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5645 | { | |
5646 | if (session->fc_slot_table.slots != NULL) { | |
5647 | kfree(session->fc_slot_table.slots); | |
5648 | session->fc_slot_table.slots = NULL; | |
5649 | } | |
5650 | if (session->bc_slot_table.slots != NULL) { | |
5651 | kfree(session->bc_slot_table.slots); | |
5652 | session->bc_slot_table.slots = NULL; | |
5653 | } | |
5654 | return; | |
5655 | } | |
5656 | ||
050047ce | 5657 | /* |
aacd5537 | 5658 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5659 | */ |
aacd5537 | 5660 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5661 | { |
f26468fb | 5662 | struct nfs4_slot_table *tbl; |
aacd5537 | 5663 | int status; |
050047ce | 5664 | |
aacd5537 AA |
5665 | dprintk("--> %s\n", __func__); |
5666 | /* Fore channel */ | |
5667 | tbl = &ses->fc_slot_table; | |
f86f36a6 TM |
5668 | status = nfs4_realloc_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5669 | if (status) /* -ENOMEM */ | |
5670 | return status; | |
aacd5537 AA |
5671 | /* Back channel */ |
5672 | tbl = &ses->bc_slot_table; | |
f86f36a6 TM |
5673 | status = nfs4_realloc_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
5674 | if (status && tbl->slots == NULL) | |
5675 | /* Fore and back channel share a connection so get | |
5676 | * both slot tables or neither */ | |
5677 | nfs4_destroy_slot_tables(ses); | |
f8625a6a | 5678 | return status; |
557134a3 AA |
5679 | } |
5680 | ||
5681 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5682 | { | |
5683 | struct nfs4_session *session; | |
5684 | struct nfs4_slot_table *tbl; | |
5685 | ||
8535b2be | 5686 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5687 | if (!session) |
5688 | return NULL; | |
76db6d95 | 5689 | |
557134a3 | 5690 | tbl = &session->fc_slot_table; |
45d43c29 | 5691 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5692 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5693 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5694 | init_completion(&tbl->complete); |
f8625a6a RL |
5695 | |
5696 | tbl = &session->bc_slot_table; | |
45d43c29 | 5697 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5698 | spin_lock_init(&tbl->slot_tbl_lock); |
5699 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5700 | init_completion(&tbl->complete); |
f8625a6a | 5701 | |
1055d76d TM |
5702 | session->session_state = 1<<NFS4_SESSION_INITING; |
5703 | ||
557134a3 AA |
5704 | session->clp = clp; |
5705 | return session; | |
5706 | } | |
5707 | ||
5708 | void nfs4_destroy_session(struct nfs4_session *session) | |
5709 | { | |
2446ab60 | 5710 | struct rpc_xprt *xprt; |
848f5bda | 5711 | struct rpc_cred *cred; |
2446ab60 | 5712 | |
848f5bda TM |
5713 | cred = nfs4_get_exchange_id_cred(session->clp); |
5714 | nfs4_proc_destroy_session(session, cred); | |
5715 | if (cred) | |
5716 | put_rpccred(cred); | |
2446ab60 TM |
5717 | |
5718 | rcu_read_lock(); | |
5719 | xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); | |
5720 | rcu_read_unlock(); | |
5a0ffe54 | 5721 | dprintk("%s Destroy backchannel for xprt %p\n", |
2446ab60 TM |
5722 | __func__, xprt); |
5723 | xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5724 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5725 | kfree(session); |
5726 | } | |
5727 | ||
fc931582 AA |
5728 | /* |
5729 | * Initialize the values to be used by the client in CREATE_SESSION | |
5730 | * If nfs4_init_session set the fore channel request and response sizes, | |
5731 | * use them. | |
5732 | * | |
5733 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5734 | * always set csa_cachethis to FALSE because the current implementation | |
5735 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5736 | */ | |
5737 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5738 | { | |
5739 | struct nfs4_session *session = args->client->cl_session; | |
5740 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5741 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5742 | ||
5743 | if (mxrqst_sz == 0) | |
5744 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5745 | if (mxresp_sz == 0) | |
5746 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5747 | /* Fore channel attributes */ | |
fc931582 AA |
5748 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5749 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5750 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5751 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5752 | |
5753 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5754 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5755 | __func__, |
5756 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5757 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5758 | |
5759 | /* Back channel attributes */ | |
fc931582 AA |
5760 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5761 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5762 | args->bc_attrs.max_resp_sz_cached = 0; | |
5763 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5764 | args->bc_attrs.max_reqs = 1; | |
5765 | ||
5766 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5767 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5768 | __func__, | |
5769 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5770 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5771 | args->bc_attrs.max_reqs); | |
5772 | } | |
5773 | ||
43c2e885 | 5774 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5775 | { |
43c2e885 BF |
5776 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5777 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5778 | ||
43c2e885 BF |
5779 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5780 | return -EINVAL; | |
5781 | /* | |
5782 | * Our requested max_ops is the minimum we need; we're not | |
5783 | * prepared to break up compounds into smaller pieces than that. | |
5784 | * So, no point even trying to continue if the server won't | |
5785 | * cooperate: | |
5786 | */ | |
5787 | if (rcvd->max_ops < sent->max_ops) | |
5788 | return -EINVAL; | |
5789 | if (rcvd->max_reqs == 0) | |
5790 | return -EINVAL; | |
b4b9a0c1 VG |
5791 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5792 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5793 | return 0; |
8d35301d AA |
5794 | } |
5795 | ||
43c2e885 BF |
5796 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5797 | { | |
5798 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5799 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5800 | |
43c2e885 BF |
5801 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5802 | return -EINVAL; | |
5803 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5804 | return -EINVAL; | |
5805 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5806 | return -EINVAL; | |
5807 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5808 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5809 | return -EINVAL; |
b4b9a0c1 | 5810 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5811 | return -EINVAL; |
5812 | return 0; | |
5813 | } | |
8d35301d | 5814 | |
8d35301d AA |
5815 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5816 | struct nfs4_session *session) | |
5817 | { | |
43c2e885 | 5818 | int ret; |
8d35301d | 5819 | |
43c2e885 BF |
5820 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5821 | if (ret) | |
5822 | return ret; | |
5823 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5824 | } |
5825 | ||
848f5bda TM |
5826 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5827 | struct rpc_cred *cred) | |
fc931582 AA |
5828 | { |
5829 | struct nfs4_session *session = clp->cl_session; | |
5830 | struct nfs41_create_session_args args = { | |
5831 | .client = clp, | |
5832 | .cb_program = NFS4_CALLBACK, | |
5833 | }; | |
5834 | struct nfs41_create_session_res res = { | |
5835 | .client = clp, | |
5836 | }; | |
5837 | struct rpc_message msg = { | |
5838 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5839 | .rpc_argp = &args, | |
5840 | .rpc_resp = &res, | |
848f5bda | 5841 | .rpc_cred = cred, |
fc931582 AA |
5842 | }; |
5843 | int status; | |
5844 | ||
5845 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5846 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5847 | |
1bd714f2 | 5848 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5849 | |
8d35301d AA |
5850 | if (!status) |
5851 | /* Verify the session's negotiated channel_attrs values */ | |
5852 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5853 | if (!status) { |
5854 | /* Increment the clientid slot sequence id */ | |
5855 | clp->cl_seqid++; | |
5856 | } | |
5857 | ||
5858 | return status; | |
5859 | } | |
5860 | ||
5861 | /* | |
5862 | * Issues a CREATE_SESSION operation to the server. | |
5863 | * It is the responsibility of the caller to verify the session is | |
5864 | * expired before calling this routine. | |
5865 | */ | |
848f5bda | 5866 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5867 | { |
5868 | int status; | |
5869 | unsigned *ptr; | |
fc931582 AA |
5870 | struct nfs4_session *session = clp->cl_session; |
5871 | ||
5872 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5873 | ||
848f5bda | 5874 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5875 | if (status) |
5876 | goto out; | |
5877 | ||
aacd5537 AA |
5878 | /* Init or reset the session slot tables */ |
5879 | status = nfs4_setup_session_slot_tables(session); | |
5880 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5881 | if (status) |
5882 | goto out; | |
5883 | ||
5884 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5885 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5886 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5887 | out: |
5888 | dprintk("<-- %s\n", __func__); | |
5889 | return status; | |
5890 | } | |
5891 | ||
0f3e66c6 AA |
5892 | /* |
5893 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5894 | * The caller must serialize access to this routine. | |
5895 | */ | |
848f5bda TM |
5896 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5897 | struct rpc_cred *cred) | |
0f3e66c6 | 5898 | { |
848f5bda TM |
5899 | struct rpc_message msg = { |
5900 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5901 | .rpc_argp = session, | |
5902 | .rpc_cred = cred, | |
5903 | }; | |
0f3e66c6 | 5904 | int status = 0; |
0f3e66c6 AA |
5905 | |
5906 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5907 | ||
5908 | /* session is still being setup */ | |
5909 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5910 | return status; | |
5911 | ||
1bd714f2 | 5912 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5913 | |
5914 | if (status) | |
08106ac7 | 5915 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5916 | "Session has been destroyed regardless...\n", status); |
5917 | ||
5918 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5919 | return status; | |
5920 | } | |
5921 | ||
7b38c368 TM |
5922 | /* |
5923 | * With sessions, the client is not marked ready until after a | |
5924 | * successful EXCHANGE_ID and CREATE_SESSION. | |
5925 | * | |
5926 | * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate | |
5927 | * other versions of NFS can be tried. | |
5928 | */ | |
5929 | static int nfs41_check_session_ready(struct nfs_client *clp) | |
5930 | { | |
5931 | int ret; | |
5932 | ||
5933 | if (clp->cl_cons_state == NFS_CS_SESSION_INITING) { | |
5934 | ret = nfs4_client_recover_expired_lease(clp); | |
5935 | if (ret) | |
5936 | return ret; | |
5937 | } | |
5938 | if (clp->cl_cons_state < NFS_CS_READY) | |
5939 | return -EPROTONOSUPPORT; | |
54ac471c | 5940 | smp_rmb(); |
7b38c368 TM |
5941 | return 0; |
5942 | } | |
5943 | ||
fccba804 TM |
5944 | int nfs4_init_session(struct nfs_server *server) |
5945 | { | |
5946 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5947 | struct nfs4_session *session; |
68bf05ef | 5948 | unsigned int rsize, wsize; |
fccba804 TM |
5949 | |
5950 | if (!nfs4_has_session(clp)) | |
5951 | return 0; | |
5952 | ||
1055d76d | 5953 | session = clp->cl_session; |
7b38c368 TM |
5954 | spin_lock(&clp->cl_lock); |
5955 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
1055d76d | 5956 | |
7b38c368 TM |
5957 | rsize = server->rsize; |
5958 | if (rsize == 0) | |
5959 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5960 | wsize = server->wsize; | |
5961 | if (wsize == 0) | |
5962 | wsize = NFS_MAX_FILE_IO_SIZE; | |
68bf05ef | 5963 | |
7b38c368 TM |
5964 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5965 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
5966 | } | |
5967 | spin_unlock(&clp->cl_lock); | |
2449ea2e | 5968 | |
7b38c368 | 5969 | return nfs41_check_session_ready(clp); |
fccba804 TM |
5970 | } |
5971 | ||
7b38c368 | 5972 | int nfs4_init_ds_session(struct nfs_client *clp, unsigned long lease_time) |
d83217c1 AA |
5973 | { |
5974 | struct nfs4_session *session = clp->cl_session; | |
5975 | int ret; | |
5976 | ||
7b38c368 TM |
5977 | spin_lock(&clp->cl_lock); |
5978 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
5979 | /* | |
5980 | * Do not set NFS_CS_CHECK_LEASE_TIME instead set the | |
5981 | * DS lease to be equal to the MDS lease. | |
5982 | */ | |
5983 | clp->cl_lease_time = lease_time; | |
5984 | clp->cl_last_renewal = jiffies; | |
5985 | } | |
5986 | spin_unlock(&clp->cl_lock); | |
d83217c1 | 5987 | |
7b38c368 TM |
5988 | ret = nfs41_check_session_ready(clp); |
5989 | if (ret) | |
5990 | return ret; | |
5991 | /* Test for the DS role */ | |
5992 | if (!is_ds_client(clp)) | |
5993 | return -ENODEV; | |
5994 | return 0; | |
d83217c1 AA |
5995 | } |
5996 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5997 | ||
5998 | ||
fc01cea9 AA |
5999 | /* |
6000 | * Renew the cl_session lease. | |
6001 | */ | |
d5f8d3fe TM |
6002 | struct nfs4_sequence_data { |
6003 | struct nfs_client *clp; | |
6004 | struct nfs4_sequence_args args; | |
6005 | struct nfs4_sequence_res res; | |
6006 | }; | |
6007 | ||
dc96aef9 AB |
6008 | static void nfs41_sequence_release(void *data) |
6009 | { | |
d5f8d3fe TM |
6010 | struct nfs4_sequence_data *calldata = data; |
6011 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 6012 | |
7135840f AB |
6013 | if (atomic_read(&clp->cl_count) > 1) |
6014 | nfs4_schedule_state_renewal(clp); | |
6015 | nfs_put_client(clp); | |
d5f8d3fe | 6016 | kfree(calldata); |
dc96aef9 AB |
6017 | } |
6018 | ||
aa5190d0 TM |
6019 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6020 | { | |
6021 | switch(task->tk_status) { | |
6022 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
6023 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
6024 | return -EAGAIN; | |
6025 | default: | |
0400a6b0 | 6026 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6027 | } |
6028 | return 0; | |
6029 | } | |
6030 | ||
dc96aef9 | 6031 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 6032 | { |
d5f8d3fe TM |
6033 | struct nfs4_sequence_data *calldata = data; |
6034 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 6035 | |
14516c3a TM |
6036 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
6037 | return; | |
fc01cea9 AA |
6038 | |
6039 | if (task->tk_status < 0) { | |
6040 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
6041 | if (atomic_read(&clp->cl_count) == 1) |
6042 | goto out; | |
fc01cea9 | 6043 | |
aa5190d0 TM |
6044 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
6045 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
6046 | return; |
6047 | } | |
6048 | } | |
fc01cea9 | 6049 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 6050 | out: |
fc01cea9 AA |
6051 | dprintk("<-- %s\n", __func__); |
6052 | } | |
6053 | ||
6054 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
6055 | { | |
d5f8d3fe TM |
6056 | struct nfs4_sequence_data *calldata = data; |
6057 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
6058 | struct nfs4_sequence_args *args; |
6059 | struct nfs4_sequence_res *res; | |
6060 | ||
fc01cea9 AA |
6061 | args = task->tk_msg.rpc_argp; |
6062 | res = task->tk_msg.rpc_resp; | |
6063 | ||
9d12b216 | 6064 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
6065 | return; |
6066 | rpc_call_start(task); | |
6067 | } | |
6068 | ||
6069 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
6070 | .rpc_call_done = nfs41_sequence_call_done, | |
6071 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 6072 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6073 | }; |
6074 | ||
71ac6da9 | 6075 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 6076 | { |
d5f8d3fe | 6077 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6078 | struct rpc_message msg = { |
6079 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6080 | .rpc_cred = cred, | |
6081 | }; | |
71ac6da9 TM |
6082 | struct rpc_task_setup task_setup_data = { |
6083 | .rpc_client = clp->cl_rpcclient, | |
6084 | .rpc_message = &msg, | |
6085 | .callback_ops = &nfs41_sequence_ops, | |
6086 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
6087 | }; | |
fc01cea9 | 6088 | |
7135840f | 6089 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6090 | return ERR_PTR(-EIO); |
dfb4f309 | 6091 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6092 | if (calldata == NULL) { |
7135840f | 6093 | nfs_put_client(clp); |
71ac6da9 | 6094 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6095 | } |
9d12b216 | 6096 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
6097 | msg.rpc_argp = &calldata->args; |
6098 | msg.rpc_resp = &calldata->res; | |
6099 | calldata->clp = clp; | |
71ac6da9 | 6100 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6101 | |
71ac6da9 TM |
6102 | return rpc_run_task(&task_setup_data); |
6103 | } | |
6104 | ||
2f60ea6b | 6105 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6106 | { |
6107 | struct rpc_task *task; | |
6108 | int ret = 0; | |
6109 | ||
2f60ea6b TM |
6110 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6111 | return 0; | |
71ac6da9 TM |
6112 | task = _nfs41_proc_sequence(clp, cred); |
6113 | if (IS_ERR(task)) | |
6114 | ret = PTR_ERR(task); | |
6115 | else | |
bf294b41 | 6116 | rpc_put_task_async(task); |
71ac6da9 TM |
6117 | dprintk("<-- %s status=%d\n", __func__, ret); |
6118 | return ret; | |
6119 | } | |
6120 | ||
6121 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6122 | { | |
6123 | struct rpc_task *task; | |
6124 | int ret; | |
6125 | ||
6126 | task = _nfs41_proc_sequence(clp, cred); | |
6127 | if (IS_ERR(task)) { | |
6128 | ret = PTR_ERR(task); | |
6129 | goto out; | |
6130 | } | |
6131 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6132 | if (!ret) { |
6133 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6134 | ||
6135 | if (task->tk_status == 0) | |
6136 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6137 | ret = task->tk_status; |
b4410c2f | 6138 | } |
71ac6da9 TM |
6139 | rpc_put_task(task); |
6140 | out: | |
6141 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6142 | return ret; | |
fc01cea9 AA |
6143 | } |
6144 | ||
fce5c838 RL |
6145 | struct nfs4_reclaim_complete_data { |
6146 | struct nfs_client *clp; | |
6147 | struct nfs41_reclaim_complete_args arg; | |
6148 | struct nfs41_reclaim_complete_res res; | |
6149 | }; | |
6150 | ||
6151 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6152 | { | |
6153 | struct nfs4_reclaim_complete_data *calldata = data; | |
6154 | ||
b257957e | 6155 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
6156 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
6157 | &calldata->arg.seq_args, | |
9d12b216 | 6158 | &calldata->res.seq_res, task)) |
fce5c838 RL |
6159 | return; |
6160 | ||
6161 | rpc_call_start(task); | |
6162 | } | |
6163 | ||
aa5190d0 TM |
6164 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6165 | { | |
6166 | switch(task->tk_status) { | |
6167 | case 0: | |
6168 | case -NFS4ERR_COMPLETE_ALREADY: | |
6169 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6170 | break; | |
6171 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6172 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6173 | /* fall through */ |
6174 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6175 | return -EAGAIN; |
6176 | default: | |
0400a6b0 | 6177 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6178 | } |
6179 | return 0; | |
6180 | } | |
6181 | ||
fce5c838 RL |
6182 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6183 | { | |
6184 | struct nfs4_reclaim_complete_data *calldata = data; | |
6185 | struct nfs_client *clp = calldata->clp; | |
6186 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6187 | ||
6188 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6189 | if (!nfs41_sequence_done(task, res)) |
6190 | return; | |
fce5c838 | 6191 | |
aa5190d0 TM |
6192 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6193 | rpc_restart_call_prepare(task); | |
6194 | return; | |
6195 | } | |
fce5c838 RL |
6196 | dprintk("<-- %s\n", __func__); |
6197 | } | |
6198 | ||
6199 | static void nfs4_free_reclaim_complete_data(void *data) | |
6200 | { | |
6201 | struct nfs4_reclaim_complete_data *calldata = data; | |
6202 | ||
6203 | kfree(calldata); | |
6204 | } | |
6205 | ||
6206 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6207 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6208 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6209 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6210 | }; | |
6211 | ||
6212 | /* | |
6213 | * Issue a global reclaim complete. | |
6214 | */ | |
6215 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
6216 | { | |
6217 | struct nfs4_reclaim_complete_data *calldata; | |
6218 | struct rpc_task *task; | |
6219 | struct rpc_message msg = { | |
6220 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
6221 | }; | |
6222 | struct rpc_task_setup task_setup_data = { | |
6223 | .rpc_client = clp->cl_rpcclient, | |
6224 | .rpc_message = &msg, | |
6225 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6226 | .flags = RPC_TASK_ASYNC, | |
6227 | }; | |
6228 | int status = -ENOMEM; | |
6229 | ||
6230 | dprintk("--> %s\n", __func__); | |
8535b2be | 6231 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6232 | if (calldata == NULL) |
6233 | goto out; | |
6234 | calldata->clp = clp; | |
6235 | calldata->arg.one_fs = 0; | |
fce5c838 | 6236 | |
9d12b216 | 6237 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
6238 | msg.rpc_argp = &calldata->arg; |
6239 | msg.rpc_resp = &calldata->res; | |
6240 | task_setup_data.callback_data = calldata; | |
6241 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6242 | if (IS_ERR(task)) { |
fce5c838 | 6243 | status = PTR_ERR(task); |
acf82b85 DC |
6244 | goto out; |
6245 | } | |
c34c32ea AA |
6246 | status = nfs4_wait_for_completion_rpc_task(task); |
6247 | if (status == 0) | |
6248 | status = task->tk_status; | |
fce5c838 | 6249 | rpc_put_task(task); |
acf82b85 | 6250 | return 0; |
fce5c838 RL |
6251 | out: |
6252 | dprintk("<-- %s status=%d\n", __func__, status); | |
6253 | return status; | |
6254 | } | |
b1f69b75 AA |
6255 | |
6256 | static void | |
6257 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6258 | { | |
6259 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6260 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
6261 | |
6262 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6263 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6264 | * right now covering the LAYOUTGET we are about to send. | |
6265 | * However, that is not so catastrophic, and there seems | |
6266 | * to be no way to prevent it completely. | |
6267 | */ | |
b1f69b75 | 6268 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 6269 | &lgp->res.seq_res, task)) |
b1f69b75 | 6270 | return; |
cf7d63f1 FI |
6271 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6272 | NFS_I(lgp->args.inode)->layout, | |
6273 | lgp->args.ctx->state)) { | |
6274 | rpc_exit(task, NFS4_OK); | |
6275 | return; | |
6276 | } | |
b1f69b75 AA |
6277 | rpc_call_start(task); |
6278 | } | |
6279 | ||
6280 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6281 | { | |
6282 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6283 | struct inode *inode = lgp->args.inode; |
6284 | struct nfs_server *server = NFS_SERVER(inode); | |
6285 | struct pnfs_layout_hdr *lo; | |
6286 | struct nfs4_state *state = NULL; | |
b1f69b75 AA |
6287 | |
6288 | dprintk("--> %s\n", __func__); | |
6289 | ||
6290 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
ee314c2a | 6291 | goto out; |
b1f69b75 AA |
6292 | |
6293 | switch (task->tk_status) { | |
6294 | case 0: | |
ee314c2a | 6295 | goto out; |
b1f69b75 AA |
6296 | case -NFS4ERR_LAYOUTTRYLATER: |
6297 | case -NFS4ERR_RECALLCONFLICT: | |
6298 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6299 | break; |
6300 | case -NFS4ERR_EXPIRED: | |
6301 | case -NFS4ERR_BAD_STATEID: | |
6302 | spin_lock(&inode->i_lock); | |
6303 | lo = NFS_I(inode)->layout; | |
6304 | if (!lo || list_empty(&lo->plh_segs)) { | |
6305 | spin_unlock(&inode->i_lock); | |
6306 | /* If the open stateid was bad, then recover it. */ | |
6307 | state = lgp->args.ctx->state; | |
6308 | } else { | |
6309 | LIST_HEAD(head); | |
6310 | ||
6311 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6312 | spin_unlock(&inode->i_lock); | |
6313 | /* Mark the bad layout state as invalid, then | |
6314 | * retry using the open stateid. */ | |
6315 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6316 | } |
6317 | } | |
ee314c2a TM |
6318 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6319 | rpc_restart_call_prepare(task); | |
6320 | out: | |
b1f69b75 AA |
6321 | dprintk("<-- %s\n", __func__); |
6322 | } | |
6323 | ||
8554116e IK |
6324 | static size_t max_response_pages(struct nfs_server *server) |
6325 | { | |
6326 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6327 | return nfs_page_array_len(0, max_resp_sz); | |
6328 | } | |
6329 | ||
6330 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6331 | { | |
6332 | int i; | |
6333 | ||
6334 | if (!pages) | |
6335 | return; | |
6336 | ||
6337 | for (i = 0; i < size; i++) { | |
6338 | if (!pages[i]) | |
6339 | break; | |
6340 | __free_page(pages[i]); | |
6341 | } | |
6342 | kfree(pages); | |
6343 | } | |
6344 | ||
6345 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6346 | { | |
6347 | struct page **pages; | |
6348 | int i; | |
6349 | ||
6350 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6351 | if (!pages) { | |
6352 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6353 | return NULL; | |
6354 | } | |
6355 | ||
6356 | for (i = 0; i < size; i++) { | |
6357 | pages[i] = alloc_page(gfp_flags); | |
6358 | if (!pages[i]) { | |
6359 | dprintk("%s: failed to allocate page\n", __func__); | |
6360 | nfs4_free_pages(pages, size); | |
6361 | return NULL; | |
6362 | } | |
6363 | } | |
6364 | ||
6365 | return pages; | |
6366 | } | |
6367 | ||
b1f69b75 AA |
6368 | static void nfs4_layoutget_release(void *calldata) |
6369 | { | |
6370 | struct nfs4_layoutget *lgp = calldata; | |
8554116e IK |
6371 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6372 | size_t max_pages = max_response_pages(server); | |
b1f69b75 AA |
6373 | |
6374 | dprintk("--> %s\n", __func__); | |
8554116e | 6375 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
b1f69b75 AA |
6376 | put_nfs_open_context(lgp->args.ctx); |
6377 | kfree(calldata); | |
6378 | dprintk("<-- %s\n", __func__); | |
6379 | } | |
6380 | ||
6381 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6382 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6383 | .rpc_call_done = nfs4_layoutget_done, | |
6384 | .rpc_release = nfs4_layoutget_release, | |
6385 | }; | |
6386 | ||
a0b0a6e3 TM |
6387 | struct pnfs_layout_segment * |
6388 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 AA |
6389 | { |
6390 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
8554116e | 6391 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6392 | struct rpc_task *task; |
6393 | struct rpc_message msg = { | |
6394 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6395 | .rpc_argp = &lgp->args, | |
6396 | .rpc_resp = &lgp->res, | |
6397 | }; | |
6398 | struct rpc_task_setup task_setup_data = { | |
6399 | .rpc_client = server->client, | |
6400 | .rpc_message = &msg, | |
6401 | .callback_ops = &nfs4_layoutget_call_ops, | |
6402 | .callback_data = lgp, | |
6403 | .flags = RPC_TASK_ASYNC, | |
6404 | }; | |
a0b0a6e3 | 6405 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6406 | int status = 0; |
6407 | ||
6408 | dprintk("--> %s\n", __func__); | |
6409 | ||
8554116e IK |
6410 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6411 | if (!lgp->args.layout.pages) { | |
6412 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6413 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6414 | } |
6415 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
6416 | ||
35124a09 | 6417 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6418 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6419 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
6420 | task = rpc_run_task(&task_setup_data); |
6421 | if (IS_ERR(task)) | |
a0b0a6e3 | 6422 | return ERR_CAST(task); |
b1f69b75 | 6423 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6424 | if (status == 0) |
6425 | status = task->tk_status; | |
6426 | if (status == 0) | |
a0b0a6e3 | 6427 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6428 | rpc_put_task(task); |
6429 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6430 | if (status) |
6431 | return ERR_PTR(status); | |
6432 | return lseg; | |
b1f69b75 AA |
6433 | } |
6434 | ||
cbe82603 BH |
6435 | static void |
6436 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6437 | { | |
6438 | struct nfs4_layoutreturn *lrp = calldata; | |
6439 | ||
6440 | dprintk("--> %s\n", __func__); | |
6441 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 6442 | &lrp->res.seq_res, task)) |
cbe82603 BH |
6443 | return; |
6444 | rpc_call_start(task); | |
6445 | } | |
6446 | ||
6447 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6448 | { | |
6449 | struct nfs4_layoutreturn *lrp = calldata; | |
6450 | struct nfs_server *server; | |
6451 | ||
6452 | dprintk("--> %s\n", __func__); | |
6453 | ||
6454 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
6455 | return; | |
6456 | ||
6457 | server = NFS_SERVER(lrp->args.inode); | |
6458 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6459 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6460 | return; |
6461 | } | |
cbe82603 BH |
6462 | dprintk("<-- %s\n", __func__); |
6463 | } | |
6464 | ||
6465 | static void nfs4_layoutreturn_release(void *calldata) | |
6466 | { | |
6467 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6468 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6469 | |
6470 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6471 | spin_lock(&lo->plh_inode->i_lock); |
6472 | if (lrp->res.lrs_present) | |
6473 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6474 | lo->plh_block_lgets--; | |
6475 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6476 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6477 | kfree(calldata); |
6478 | dprintk("<-- %s\n", __func__); | |
6479 | } | |
6480 | ||
6481 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6482 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6483 | .rpc_call_done = nfs4_layoutreturn_done, | |
6484 | .rpc_release = nfs4_layoutreturn_release, | |
6485 | }; | |
6486 | ||
6487 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6488 | { | |
6489 | struct rpc_task *task; | |
6490 | struct rpc_message msg = { | |
6491 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6492 | .rpc_argp = &lrp->args, | |
6493 | .rpc_resp = &lrp->res, | |
6494 | }; | |
6495 | struct rpc_task_setup task_setup_data = { | |
6496 | .rpc_client = lrp->clp->cl_rpcclient, | |
6497 | .rpc_message = &msg, | |
6498 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6499 | .callback_data = lrp, | |
6500 | }; | |
6501 | int status; | |
6502 | ||
6503 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6504 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6505 | task = rpc_run_task(&task_setup_data); |
6506 | if (IS_ERR(task)) | |
6507 | return PTR_ERR(task); | |
6508 | status = task->tk_status; | |
6509 | dprintk("<-- %s status=%d\n", __func__, status); | |
6510 | rpc_put_task(task); | |
6511 | return status; | |
6512 | } | |
6513 | ||
7f11d8d3 AA |
6514 | /* |
6515 | * Retrieve the list of Data Server devices from the MDS. | |
6516 | */ | |
6517 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6518 | const struct nfs_fh *fh, | |
6519 | struct pnfs_devicelist *devlist) | |
6520 | { | |
6521 | struct nfs4_getdevicelist_args args = { | |
6522 | .fh = fh, | |
6523 | .layoutclass = server->pnfs_curr_ld->id, | |
6524 | }; | |
6525 | struct nfs4_getdevicelist_res res = { | |
6526 | .devlist = devlist, | |
6527 | }; | |
6528 | struct rpc_message msg = { | |
6529 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6530 | .rpc_argp = &args, | |
6531 | .rpc_resp = &res, | |
6532 | }; | |
6533 | int status; | |
6534 | ||
6535 | dprintk("--> %s\n", __func__); | |
6536 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6537 | &res.seq_res, 0); | |
6538 | dprintk("<-- %s status=%d\n", __func__, status); | |
6539 | return status; | |
6540 | } | |
6541 | ||
6542 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6543 | const struct nfs_fh *fh, | |
6544 | struct pnfs_devicelist *devlist) | |
6545 | { | |
6546 | struct nfs4_exception exception = { }; | |
6547 | int err; | |
6548 | ||
6549 | do { | |
6550 | err = nfs4_handle_exception(server, | |
6551 | _nfs4_getdevicelist(server, fh, devlist), | |
6552 | &exception); | |
6553 | } while (exception.retry); | |
6554 | ||
6555 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6556 | err, devlist->num_devs); | |
6557 | ||
6558 | return err; | |
6559 | } | |
6560 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6561 | ||
b1f69b75 AA |
6562 | static int |
6563 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6564 | { | |
6565 | struct nfs4_getdeviceinfo_args args = { | |
6566 | .pdev = pdev, | |
6567 | }; | |
6568 | struct nfs4_getdeviceinfo_res res = { | |
6569 | .pdev = pdev, | |
6570 | }; | |
6571 | struct rpc_message msg = { | |
6572 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6573 | .rpc_argp = &args, | |
6574 | .rpc_resp = &res, | |
6575 | }; | |
6576 | int status; | |
6577 | ||
6578 | dprintk("--> %s\n", __func__); | |
7c513058 | 6579 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6580 | dprintk("<-- %s status=%d\n", __func__, status); |
6581 | ||
6582 | return status; | |
6583 | } | |
6584 | ||
6585 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6586 | { | |
6587 | struct nfs4_exception exception = { }; | |
6588 | int err; | |
6589 | ||
6590 | do { | |
6591 | err = nfs4_handle_exception(server, | |
6592 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6593 | &exception); | |
6594 | } while (exception.retry); | |
6595 | return err; | |
6596 | } | |
6597 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6598 | ||
863a3c6c AA |
6599 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6600 | { | |
6601 | struct nfs4_layoutcommit_data *data = calldata; | |
6602 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6603 | ||
6604 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6605 | &data->res.seq_res, task)) |
863a3c6c AA |
6606 | return; |
6607 | rpc_call_start(task); | |
6608 | } | |
6609 | ||
6610 | static void | |
6611 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6612 | { | |
6613 | struct nfs4_layoutcommit_data *data = calldata; | |
6614 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6615 | ||
6616 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6617 | return; | |
6618 | ||
6619 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6620 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6621 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6622 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6623 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6624 | task->tk_status = 0; |
e59d27e0 TM |
6625 | break; |
6626 | case 0: | |
863a3c6c AA |
6627 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6628 | data->res.fattr); | |
e59d27e0 TM |
6629 | break; |
6630 | default: | |
6631 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6632 | rpc_restart_call_prepare(task); | |
6633 | return; | |
6634 | } | |
6635 | } | |
863a3c6c AA |
6636 | } |
6637 | ||
6638 | static void nfs4_layoutcommit_release(void *calldata) | |
6639 | { | |
6640 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6641 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6642 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6643 | |
db29c089 | 6644 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6645 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6646 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6647 | list_del_init(&lseg->pls_lc_list); | |
6648 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6649 | &lseg->pls_flags)) | |
9369a431 | 6650 | pnfs_put_lseg(lseg); |
a9bae566 | 6651 | } |
92407e75 PT |
6652 | |
6653 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6654 | smp_mb__after_clear_bit(); | |
6655 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6656 | ||
863a3c6c AA |
6657 | put_rpccred(data->cred); |
6658 | kfree(data); | |
6659 | } | |
6660 | ||
6661 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6662 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6663 | .rpc_call_done = nfs4_layoutcommit_done, | |
6664 | .rpc_release = nfs4_layoutcommit_release, | |
6665 | }; | |
6666 | ||
6667 | int | |
ef311537 | 6668 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6669 | { |
6670 | struct rpc_message msg = { | |
6671 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6672 | .rpc_argp = &data->args, | |
6673 | .rpc_resp = &data->res, | |
6674 | .rpc_cred = data->cred, | |
6675 | }; | |
6676 | struct rpc_task_setup task_setup_data = { | |
6677 | .task = &data->task, | |
6678 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6679 | .rpc_message = &msg, | |
6680 | .callback_ops = &nfs4_layoutcommit_ops, | |
6681 | .callback_data = data, | |
6682 | .flags = RPC_TASK_ASYNC, | |
6683 | }; | |
6684 | struct rpc_task *task; | |
6685 | int status = 0; | |
6686 | ||
6687 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6688 | "lbw: %llu inode %lu\n", | |
6689 | data->task.tk_pid, sync, | |
6690 | data->args.lastbytewritten, | |
6691 | data->args.inode->i_ino); | |
6692 | ||
9d12b216 | 6693 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6694 | task = rpc_run_task(&task_setup_data); |
6695 | if (IS_ERR(task)) | |
6696 | return PTR_ERR(task); | |
ef311537 | 6697 | if (sync == false) |
863a3c6c AA |
6698 | goto out; |
6699 | status = nfs4_wait_for_completion_rpc_task(task); | |
6700 | if (status != 0) | |
6701 | goto out; | |
6702 | status = task->tk_status; | |
6703 | out: | |
6704 | dprintk("%s: status %d\n", __func__, status); | |
6705 | rpc_put_task(task); | |
6706 | return status; | |
6707 | } | |
fca78d6d BS |
6708 | |
6709 | static int | |
6710 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6711 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6712 | { | |
6713 | struct nfs41_secinfo_no_name_args args = { | |
6714 | .style = SECINFO_STYLE_CURRENT_FH, | |
6715 | }; | |
6716 | struct nfs4_secinfo_res res = { | |
6717 | .flavors = flavors, | |
6718 | }; | |
6719 | struct rpc_message msg = { | |
6720 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6721 | .rpc_argp = &args, | |
6722 | .rpc_resp = &res, | |
6723 | }; | |
6724 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6725 | } | |
6726 | ||
6727 | static int | |
6728 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6729 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6730 | { | |
6731 | struct nfs4_exception exception = { }; | |
6732 | int err; | |
6733 | do { | |
6734 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6735 | switch (err) { | |
6736 | case 0: | |
6737 | case -NFS4ERR_WRONGSEC: | |
6738 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6739 | goto out; |
fca78d6d BS |
6740 | default: |
6741 | err = nfs4_handle_exception(server, err, &exception); | |
6742 | } | |
6743 | } while (exception.retry); | |
05e9cfb4 | 6744 | out: |
fca78d6d BS |
6745 | return err; |
6746 | } | |
6747 | ||
6748 | static int | |
6749 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6750 | struct nfs_fsinfo *info) | |
6751 | { | |
6752 | int err; | |
6753 | struct page *page; | |
6754 | rpc_authflavor_t flavor; | |
6755 | struct nfs4_secinfo_flavors *flavors; | |
6756 | ||
6757 | page = alloc_page(GFP_KERNEL); | |
6758 | if (!page) { | |
6759 | err = -ENOMEM; | |
6760 | goto out; | |
6761 | } | |
6762 | ||
6763 | flavors = page_address(page); | |
6764 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6765 | ||
6766 | /* | |
6767 | * Fall back on "guess and check" method if | |
6768 | * the server doesn't support SECINFO_NO_NAME | |
6769 | */ | |
6770 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6771 | err = nfs4_find_root_sec(server, fhandle, info); | |
6772 | goto out_freepage; | |
6773 | } | |
6774 | if (err) | |
6775 | goto out_freepage; | |
6776 | ||
6777 | flavor = nfs_find_best_sec(flavors); | |
6778 | if (err == 0) | |
6779 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6780 | ||
6781 | out_freepage: | |
6782 | put_page(page); | |
6783 | if (err == -EACCES) | |
6784 | return -EPERM; | |
6785 | out: | |
6786 | return err; | |
6787 | } | |
1cab0652 BS |
6788 | |
6789 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6790 | { |
6791 | int status; | |
6792 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6793 | .stateid = stateid, |
7d974794 BS |
6794 | }; |
6795 | struct nfs41_test_stateid_res res; | |
6796 | struct rpc_message msg = { | |
6797 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6798 | .rpc_argp = &args, | |
6799 | .rpc_resp = &res, | |
6800 | }; | |
1cab0652 | 6801 | |
38527b15 | 6802 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6803 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 | 6804 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
6805 | if (status != NFS_OK) { |
6806 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6807 | return status; |
38527b15 CL |
6808 | } |
6809 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6810 | return -res.status; |
7d974794 BS |
6811 | } |
6812 | ||
38527b15 CL |
6813 | /** |
6814 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6815 | * | |
6816 | * @server: server / transport on which to perform the operation | |
6817 | * @stateid: state ID to test | |
6818 | * | |
6819 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6820 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6821 | * failed or the state ID is not currently valid. | |
6822 | */ | |
1cab0652 | 6823 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6824 | { |
6825 | struct nfs4_exception exception = { }; | |
6826 | int err; | |
6827 | do { | |
377e507d CL |
6828 | err = _nfs41_test_stateid(server, stateid); |
6829 | if (err != -NFS4ERR_DELAY) | |
6830 | break; | |
6831 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6832 | } while (exception.retry); |
6833 | return err; | |
6834 | } | |
9aeda35f | 6835 | |
1cab0652 | 6836 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6837 | { |
9aeda35f | 6838 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6839 | .stateid = stateid, |
9aeda35f BS |
6840 | }; |
6841 | struct nfs41_free_stateid_res res; | |
6842 | struct rpc_message msg = { | |
6843 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6844 | .rpc_argp = &args, | |
6845 | .rpc_resp = &res, | |
6846 | }; | |
38527b15 | 6847 | int status; |
9aeda35f | 6848 | |
38527b15 | 6849 | dprintk("NFS call free_stateid %p\n", stateid); |
9d12b216 | 6850 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
38527b15 | 6851 | status = nfs4_call_sync_sequence(server->client, server, &msg, |
377e507d | 6852 | &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
6853 | dprintk("NFS reply free_stateid: %d\n", status); |
6854 | return status; | |
9aeda35f BS |
6855 | } |
6856 | ||
38527b15 CL |
6857 | /** |
6858 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6859 | * | |
6860 | * @server: server / transport on which to perform the operation | |
6861 | * @stateid: state ID to release | |
6862 | * | |
6863 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6864 | * negative NFS4ERR value is returned. | |
6865 | */ | |
1cab0652 | 6866 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6867 | { |
6868 | struct nfs4_exception exception = { }; | |
6869 | int err; | |
6870 | do { | |
377e507d CL |
6871 | err = _nfs4_free_stateid(server, stateid); |
6872 | if (err != -NFS4ERR_DELAY) | |
6873 | break; | |
6874 | nfs4_handle_exception(server, err, &exception); | |
9aeda35f BS |
6875 | } while (exception.retry); |
6876 | return err; | |
6877 | } | |
36281caa TM |
6878 | |
6879 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6880 | const nfs4_stateid *s2) | |
6881 | { | |
2d2f24ad | 6882 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6883 | return false; |
6884 | ||
2d2f24ad | 6885 | if (s1->seqid == s2->seqid) |
36281caa | 6886 | return true; |
2d2f24ad | 6887 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6888 | return true; |
6889 | ||
6890 | return false; | |
6891 | } | |
6892 | ||
557134a3 AA |
6893 | #endif /* CONFIG_NFS_V4_1 */ |
6894 | ||
36281caa TM |
6895 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6896 | const nfs4_stateid *s2) | |
6897 | { | |
f597c537 | 6898 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6899 | } |
6900 | ||
6901 | ||
17280175 | 6902 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6903 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6904 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6905 | .recover_open = nfs4_open_reclaim, |
6906 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6907 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6908 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 6909 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
6910 | }; |
6911 | ||
591d71cb | 6912 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6913 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6914 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6915 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6916 | .recover_open = nfs4_open_reclaim, | |
6917 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6918 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6919 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6920 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 6921 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
6922 | }; |
6923 | #endif /* CONFIG_NFS_V4_1 */ | |
6924 | ||
17280175 | 6925 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6926 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6927 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6928 | .recover_open = nfs4_open_expired, | |
6929 | .recover_lock = nfs4_lock_expired, | |
6930 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6931 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6932 | }; |
6933 | ||
6934 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6935 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6936 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6937 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6938 | .recover_open = nfs41_open_expired, |
6939 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6940 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6941 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6942 | }; |
591d71cb | 6943 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6944 | |
17280175 | 6945 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6946 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6947 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6948 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6949 | }; |
6950 | ||
6951 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6952 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6953 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6954 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6955 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6956 | }; |
6957 | #endif | |
6958 | ||
97dc1359 TM |
6959 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6960 | .minor_version = 0, | |
6961 | .call_sync = _nfs4_call_sync, | |
36281caa | 6962 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6963 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6964 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6965 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6966 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6967 | }; |
6968 | ||
6969 | #if defined(CONFIG_NFS_V4_1) | |
6970 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6971 | .minor_version = 1, | |
6972 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 6973 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6974 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6975 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6976 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6977 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6978 | }; |
6979 | #endif | |
6980 | ||
97dc1359 TM |
6981 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6982 | [0] = &nfs_v4_0_minor_ops, | |
6983 | #if defined(CONFIG_NFS_V4_1) | |
6984 | [1] = &nfs_v4_1_minor_ops, | |
6985 | #endif | |
6986 | }; | |
6987 | ||
73a79706 BS |
6988 | const struct inode_operations nfs4_dir_inode_operations = { |
6989 | .create = nfs_create, | |
6990 | .lookup = nfs_lookup, | |
6991 | .atomic_open = nfs_atomic_open, | |
6992 | .link = nfs_link, | |
6993 | .unlink = nfs_unlink, | |
6994 | .symlink = nfs_symlink, | |
6995 | .mkdir = nfs_mkdir, | |
6996 | .rmdir = nfs_rmdir, | |
6997 | .mknod = nfs_mknod, | |
6998 | .rename = nfs_rename, | |
6999 | .permission = nfs_permission, | |
7000 | .getattr = nfs_getattr, | |
7001 | .setattr = nfs_setattr, | |
7002 | .getxattr = generic_getxattr, | |
7003 | .setxattr = generic_setxattr, | |
7004 | .listxattr = generic_listxattr, | |
7005 | .removexattr = generic_removexattr, | |
7006 | }; | |
7007 | ||
92e1d5be | 7008 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
7009 | .permission = nfs_permission, |
7010 | .getattr = nfs_getattr, | |
7011 | .setattr = nfs_setattr, | |
64c2ce8b AK |
7012 | .getxattr = generic_getxattr, |
7013 | .setxattr = generic_setxattr, | |
7014 | .listxattr = generic_listxattr, | |
7015 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
7016 | }; |
7017 | ||
509de811 | 7018 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
7019 | .version = 4, /* protocol version */ |
7020 | .dentry_ops = &nfs4_dentry_operations, | |
7021 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 7022 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 7023 | .file_ops = &nfs4_file_operations, |
1da177e4 | 7024 | .getroot = nfs4_proc_get_root, |
281cad46 | 7025 | .submount = nfs4_submount, |
ff9099f2 | 7026 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
7027 | .getattr = nfs4_proc_getattr, |
7028 | .setattr = nfs4_proc_setattr, | |
7029 | .lookup = nfs4_proc_lookup, | |
7030 | .access = nfs4_proc_access, | |
7031 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
7032 | .create = nfs4_proc_create, |
7033 | .remove = nfs4_proc_remove, | |
7034 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 7035 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
7036 | .unlink_done = nfs4_proc_unlink_done, |
7037 | .rename = nfs4_proc_rename, | |
d3d4152a | 7038 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 7039 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 7040 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
7041 | .link = nfs4_proc_link, |
7042 | .symlink = nfs4_proc_symlink, | |
7043 | .mkdir = nfs4_proc_mkdir, | |
7044 | .rmdir = nfs4_proc_remove, | |
7045 | .readdir = nfs4_proc_readdir, | |
7046 | .mknod = nfs4_proc_mknod, | |
7047 | .statfs = nfs4_proc_statfs, | |
7048 | .fsinfo = nfs4_proc_fsinfo, | |
7049 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 7050 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
7051 | .decode_dirent = nfs4_decode_dirent, |
7052 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 7053 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 7054 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 7055 | .read_done = nfs4_read_done, |
1da177e4 | 7056 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 7057 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 7058 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 7059 | .write_done = nfs4_write_done, |
1da177e4 | 7060 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 7061 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 7062 | .commit_done = nfs4_commit_done, |
1da177e4 | 7063 | .lock = nfs4_proc_lock, |
e50a1c2e | 7064 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 7065 | .close_context = nfs4_close_context, |
2b484297 | 7066 | .open_context = nfs4_atomic_open, |
011e2a7f | 7067 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 7068 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 7069 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 7070 | .init_client = nfs4_init_client, |
cdb7eced | 7071 | .free_client = nfs4_free_client, |
1179acc6 BS |
7072 | .create_server = nfs4_create_server, |
7073 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
7074 | }; |
7075 | ||
64c2ce8b AK |
7076 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
7077 | .prefix = XATTR_NAME_NFSV4_ACL, | |
7078 | .list = nfs4_xattr_list_nfs4_acl, | |
7079 | .get = nfs4_xattr_get_nfs4_acl, | |
7080 | .set = nfs4_xattr_set_nfs4_acl, | |
7081 | }; | |
7082 | ||
7083 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
7084 | &nfs4_xattr_nfs4_acl_handler, | |
7085 | NULL | |
7086 | }; | |
7087 | ||
1da177e4 LT |
7088 | /* |
7089 | * Local variables: | |
7090 | * c-basic-offset: 8 | |
7091 | * End: | |
7092 | */ |