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 | 45 | #include <linux/sunrpc/clnt.h> |
8f70e95f | 46 | #include <linux/sunrpc/gss_api.h> |
1da177e4 LT |
47 | #include <linux/nfs.h> |
48 | #include <linux/nfs4.h> | |
49 | #include <linux/nfs_fs.h> | |
50 | #include <linux/nfs_page.h> | |
9b7160c5 | 51 | #include <linux/nfs_mount.h> |
1da177e4 | 52 | #include <linux/namei.h> |
02a913a7 | 53 | #include <linux/mount.h> |
99fe60d0 | 54 | #include <linux/module.h> |
6926afd1 | 55 | #include <linux/nfs_idmap.h> |
5a0ffe54 | 56 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 57 | #include <linux/xattr.h> |
c7a360b0 | 58 | #include <linux/utsname.h> |
d310310c | 59 | #include <linux/freezer.h> |
1da177e4 | 60 | |
4ce79717 | 61 | #include "nfs4_fs.h" |
1da177e4 | 62 | #include "delegation.h" |
101070ca | 63 | #include "internal.h" |
006ea73e | 64 | #include "iostat.h" |
fc931582 | 65 | #include "callback.h" |
b1f69b75 | 66 | #include "pnfs.h" |
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 | ||
ef159e91 TM |
75 | static unsigned short max_session_slots = NFS4_DEF_SLOT_TABLE_SIZE; |
76 | ||
cdd4e68b | 77 | struct nfs4_opendata; |
864472e9 | 78 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 79 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 80 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 81 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
81934ddb | 82 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
9936781d | 83 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
84 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
85 | struct nfs_fattr *fattr, struct iattr *sattr, | |
86 | struct nfs4_state *state); | |
f062eb6c | 87 | #ifdef CONFIG_NFS_V4_1 |
1cab0652 BS |
88 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *); |
89 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *); | |
f062eb6c | 90 | #endif |
1da177e4 | 91 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 92 | static int nfs4_map_errors(int err) |
1da177e4 | 93 | { |
52567b03 TM |
94 | if (err >= -1000) |
95 | return err; | |
96 | switch (err) { | |
97 | case -NFS4ERR_RESOURCE: | |
98 | return -EREMOTEIO; | |
7ebb9315 BS |
99 | case -NFS4ERR_WRONGSEC: |
100 | return -EPERM; | |
3ddeb7c5 TM |
101 | case -NFS4ERR_BADOWNER: |
102 | case -NFS4ERR_BADNAME: | |
103 | return -EINVAL; | |
52567b03 | 104 | default: |
1da177e4 | 105 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 106 | __func__, -err); |
52567b03 | 107 | break; |
1da177e4 | 108 | } |
52567b03 | 109 | return -EIO; |
1da177e4 LT |
110 | } |
111 | ||
112 | /* | |
113 | * This is our standard bitmap for GETATTR requests. | |
114 | */ | |
115 | const u32 nfs4_fattr_bitmap[2] = { | |
116 | FATTR4_WORD0_TYPE | |
117 | | FATTR4_WORD0_CHANGE | |
118 | | FATTR4_WORD0_SIZE | |
119 | | FATTR4_WORD0_FSID | |
120 | | FATTR4_WORD0_FILEID, | |
121 | FATTR4_WORD1_MODE | |
122 | | FATTR4_WORD1_NUMLINKS | |
123 | | FATTR4_WORD1_OWNER | |
124 | | FATTR4_WORD1_OWNER_GROUP | |
125 | | FATTR4_WORD1_RAWDEV | |
126 | | FATTR4_WORD1_SPACE_USED | |
127 | | FATTR4_WORD1_TIME_ACCESS | |
128 | | FATTR4_WORD1_TIME_METADATA | |
129 | | FATTR4_WORD1_TIME_MODIFY | |
130 | }; | |
131 | ||
132 | const u32 nfs4_statfs_bitmap[2] = { | |
133 | FATTR4_WORD0_FILES_AVAIL | |
134 | | FATTR4_WORD0_FILES_FREE | |
135 | | FATTR4_WORD0_FILES_TOTAL, | |
136 | FATTR4_WORD1_SPACE_AVAIL | |
137 | | FATTR4_WORD1_SPACE_FREE | |
138 | | FATTR4_WORD1_SPACE_TOTAL | |
139 | }; | |
140 | ||
4ce79717 | 141 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
142 | FATTR4_WORD0_MAXLINK |
143 | | FATTR4_WORD0_MAXNAME, | |
144 | 0 | |
145 | }; | |
146 | ||
dae100c2 | 147 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
148 | | FATTR4_WORD0_MAXREAD |
149 | | FATTR4_WORD0_MAXWRITE | |
150 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 151 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
152 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
153 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
154 | }; |
155 | ||
830b8e33 MN |
156 | const u32 nfs4_fs_locations_bitmap[2] = { |
157 | FATTR4_WORD0_TYPE | |
158 | | FATTR4_WORD0_CHANGE | |
159 | | FATTR4_WORD0_SIZE | |
160 | | FATTR4_WORD0_FSID | |
161 | | FATTR4_WORD0_FILEID | |
162 | | FATTR4_WORD0_FS_LOCATIONS, | |
163 | FATTR4_WORD1_MODE | |
164 | | FATTR4_WORD1_NUMLINKS | |
165 | | FATTR4_WORD1_OWNER | |
166 | | FATTR4_WORD1_OWNER_GROUP | |
167 | | FATTR4_WORD1_RAWDEV | |
168 | | FATTR4_WORD1_SPACE_USED | |
169 | | FATTR4_WORD1_TIME_ACCESS | |
170 | | FATTR4_WORD1_TIME_METADATA | |
171 | | FATTR4_WORD1_TIME_MODIFY | |
172 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
173 | }; | |
174 | ||
bc4785cd | 175 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
176 | struct nfs4_readdir_arg *readdir) |
177 | { | |
0dbb4c67 | 178 | __be32 *start, *p; |
1da177e4 LT |
179 | |
180 | BUG_ON(readdir->count < 80); | |
181 | if (cookie > 2) { | |
b7ef1956 | 182 | readdir->cookie = cookie; |
1da177e4 LT |
183 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
184 | return; | |
185 | } | |
186 | ||
187 | readdir->cookie = 0; | |
188 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
189 | if (cookie == 2) | |
190 | return; | |
191 | ||
192 | /* | |
193 | * NFSv4 servers do not return entries for '.' and '..' | |
194 | * Therefore, we fake these entries here. We let '.' | |
195 | * have cookie 0 and '..' have cookie 1. Note that | |
196 | * when talking to the server, we always send cookie 0 | |
197 | * instead of 1 or 2. | |
198 | */ | |
0dbb4c67 | 199 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
200 | |
201 | if (cookie == 0) { | |
202 | *p++ = xdr_one; /* next */ | |
203 | *p++ = xdr_zero; /* cookie, first word */ | |
204 | *p++ = xdr_one; /* cookie, second word */ | |
205 | *p++ = xdr_one; /* entry len */ | |
206 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
207 | p++; | |
208 | *p++ = xdr_one; /* bitmap length */ | |
209 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
210 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 211 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
212 | } |
213 | ||
214 | *p++ = xdr_one; /* next */ | |
215 | *p++ = xdr_zero; /* cookie, first word */ | |
216 | *p++ = xdr_two; /* cookie, second word */ | |
217 | *p++ = xdr_two; /* entry len */ | |
218 | memcpy(p, "..\0\0", 4); /* entry */ | |
219 | p++; | |
220 | *p++ = xdr_one; /* bitmap length */ | |
221 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
222 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 223 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
224 | |
225 | readdir->pgbase = (char *)p - (char *)start; | |
226 | readdir->count -= readdir->pgbase; | |
227 | kunmap_atomic(start, KM_USER0); | |
228 | } | |
229 | ||
65de872e TM |
230 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
231 | { | |
232 | int res; | |
233 | ||
234 | might_sleep(); | |
235 | ||
e005e804 | 236 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 237 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
238 | return res; |
239 | } | |
240 | ||
241 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
242 | { | |
243 | int res = 0; | |
244 | ||
245 | might_sleep(); | |
246 | ||
247 | if (*timeout <= 0) | |
248 | *timeout = NFS4_POLL_RETRY_MIN; | |
249 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
250 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 251 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
252 | if (fatal_signal_pending(current)) |
253 | res = -ERESTARTSYS; | |
254 | *timeout <<= 1; | |
255 | return res; | |
256 | } | |
257 | ||
258 | /* This is the error handling routine for processes that are allowed | |
259 | * to sleep. | |
260 | */ | |
b064eca2 | 261 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
262 | { |
263 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 264 | struct nfs4_state *state = exception->state; |
65de872e TM |
265 | int ret = errorcode; |
266 | ||
267 | exception->retry = 0; | |
268 | switch(errorcode) { | |
269 | case 0: | |
270 | return 0; | |
a1d0b5ee | 271 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
272 | case -NFS4ERR_ADMIN_REVOKED: |
273 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
274 | if (state != NULL) |
275 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
276 | case -NFS4ERR_OPENMODE: |
277 | if (state == NULL) | |
278 | break; | |
0400a6b0 TM |
279 | nfs4_schedule_stateid_recovery(server, state); |
280 | goto wait_on_recovery; | |
0ced63d1 TM |
281 | case -NFS4ERR_EXPIRED: |
282 | if (state != NULL) | |
283 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 284 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 285 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
286 | nfs4_schedule_lease_recovery(clp); |
287 | goto wait_on_recovery; | |
03391693 | 288 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
289 | case -NFS4ERR_BADSESSION: |
290 | case -NFS4ERR_BADSLOT: | |
291 | case -NFS4ERR_BAD_HIGH_SLOT: | |
292 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
293 | case -NFS4ERR_DEADSESSION: | |
294 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
295 | case -NFS4ERR_SEQ_MISORDERED: | |
296 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
297 | errorcode); | |
0400a6b0 | 298 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 | 299 | exception->retry = 1; |
b9179237 | 300 | break; |
03391693 | 301 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 302 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
303 | if (exception->timeout > HZ) { |
304 | /* We have retried a decent amount, time to | |
305 | * fail | |
306 | */ | |
307 | ret = -EBUSY; | |
308 | break; | |
309 | } | |
65de872e TM |
310 | case -NFS4ERR_GRACE: |
311 | case -NFS4ERR_DELAY: | |
2c643488 | 312 | case -EKEYEXPIRED: |
65de872e TM |
313 | ret = nfs4_delay(server->client, &exception->timeout); |
314 | if (ret != 0) | |
315 | break; | |
a8a4ae3a | 316 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
317 | case -NFS4ERR_OLD_STATEID: |
318 | exception->retry = 1; | |
b064eca2 TM |
319 | break; |
320 | case -NFS4ERR_BADOWNER: | |
321 | /* The following works around a Linux server bug! */ | |
322 | case -NFS4ERR_BADNAME: | |
323 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
324 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
325 | exception->retry = 1; | |
326 | printk(KERN_WARNING "NFS: v4 server %s " | |
327 | "does not accept raw " | |
328 | "uid/gids. " | |
329 | "Reenabling the idmapper.\n", | |
330 | server->nfs_client->cl_hostname); | |
331 | } | |
65de872e TM |
332 | } |
333 | /* We failed to handle the error */ | |
334 | return nfs4_map_errors(ret); | |
0400a6b0 | 335 | wait_on_recovery: |
a2c0b9e2 TM |
336 | ret = nfs4_wait_clnt_recover(clp); |
337 | if (ret == 0) | |
338 | exception->retry = 1; | |
339 | return ret; | |
65de872e TM |
340 | } |
341 | ||
342 | ||
452e9352 | 343 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 344 | { |
1da177e4 LT |
345 | spin_lock(&clp->cl_lock); |
346 | if (time_before(clp->cl_last_renewal,timestamp)) | |
347 | clp->cl_last_renewal = timestamp; | |
348 | spin_unlock(&clp->cl_lock); | |
349 | } | |
350 | ||
452e9352 TM |
351 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
352 | { | |
353 | do_renew_lease(server->nfs_client, timestamp); | |
354 | } | |
355 | ||
cccef3b9 AA |
356 | #if defined(CONFIG_NFS_V4_1) |
357 | ||
e2c4ab3c AA |
358 | /* |
359 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
360 | * | |
361 | * freeing a slot is trivially done by clearing its respective bit | |
362 | * in the bitmap. | |
363 | * If the freed slotid equals highest_used_slotid we want to update it | |
364 | * so that the server would be able to size down the slot table if needed, | |
365 | * otherwise we know that the highest_used_slotid is still in use. | |
366 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
367 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
368 | * highest slotid in use. | |
45d43c29 | 369 | * If none found, highest_used_slotid is set to NFS4_NO_SLOT. |
35dc1d74 TM |
370 | * |
371 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
372 | */ |
373 | static void | |
45d43c29 | 374 | nfs4_free_slot(struct nfs4_slot_table *tbl, u32 slotid) |
e2c4ab3c | 375 | { |
45d43c29 | 376 | BUG_ON(slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
377 | /* clear used bit in bitmap */ |
378 | __clear_bit(slotid, tbl->used_slots); | |
379 | ||
380 | /* update highest_used_slotid when it is freed */ | |
381 | if (slotid == tbl->highest_used_slotid) { | |
382 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 383 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
384 | tbl->highest_used_slotid = slotid; |
385 | else | |
45d43c29 | 386 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
e2c4ab3c | 387 | } |
45d43c29 TM |
388 | dprintk("%s: slotid %u highest_used_slotid %d\n", __func__, |
389 | slotid, tbl->highest_used_slotid); | |
e2c4ab3c AA |
390 | } |
391 | ||
961a828d TM |
392 | bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) |
393 | { | |
394 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
395 | return true; | |
396 | } | |
397 | ||
3bfb0fc5 | 398 | /* |
42acd021 | 399 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 400 | */ |
42acd021 | 401 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 402 | { |
a2118c33 | 403 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
961a828d TM |
404 | rpc_wake_up_first(&ses->fc_slot_table.slot_tbl_waitq, |
405 | nfs4_set_task_privileged, NULL); | |
3bfb0fc5 AB |
406 | return; |
407 | } | |
408 | ||
45d43c29 | 409 | if (ses->fc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
3bfb0fc5 AB |
410 | return; |
411 | ||
42acd021 AA |
412 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
413 | complete(&ses->fc_slot_table.complete); | |
414 | } | |
415 | ||
416 | /* | |
417 | * Signal state manager thread if session back channel is drained | |
418 | */ | |
419 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
420 | { | |
421 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
45d43c29 | 422 | ses->bc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
42acd021 AA |
423 | return; |
424 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
425 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
426 | } |
427 | ||
d185a334 | 428 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
429 | { |
430 | struct nfs4_slot_table *tbl; | |
431 | ||
d185a334 | 432 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 433 | if (!res->sr_slot) { |
13615871 AA |
434 | /* just wake up the next guy waiting since |
435 | * we may have not consumed a slot after all */ | |
691daf3b | 436 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 437 | return; |
13615871 | 438 | } |
ea028ac9 | 439 | |
35dc1d74 | 440 | spin_lock(&tbl->slot_tbl_lock); |
aabd0b40 | 441 | nfs4_free_slot(tbl, res->sr_slot - tbl->slots); |
42acd021 | 442 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 443 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 444 | res->sr_slot = NULL; |
13615871 AA |
445 | } |
446 | ||
14516c3a | 447 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
448 | { |
449 | unsigned long timestamp; | |
14516c3a | 450 | struct nfs_client *clp; |
b0df806c AA |
451 | |
452 | /* | |
453 | * sr_status remains 1 if an RPC level error occurred. The server | |
454 | * may or may not have processed the sequence operation.. | |
455 | * Proceed as if the server received and processed the sequence | |
456 | * operation. | |
457 | */ | |
458 | if (res->sr_status == 1) | |
459 | res->sr_status = NFS_OK; | |
460 | ||
468f8613 BS |
461 | /* don't increment the sequence number if the task wasn't sent */ |
462 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
463 | goto out; |
464 | ||
691daf3b | 465 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
466 | switch (res->sr_status) { |
467 | case 0: | |
b0df806c | 468 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 469 | ++res->sr_slot->seq_nr; |
b0df806c | 470 | timestamp = res->sr_renewal_time; |
14516c3a | 471 | clp = res->sr_session->clp; |
452e9352 | 472 | do_renew_lease(clp, timestamp); |
0629e370 | 473 | /* Check sequence flags */ |
b4410c2f TM |
474 | if (res->sr_status_flags != 0) |
475 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
476 | break; |
477 | case -NFS4ERR_DELAY: | |
478 | /* The server detected a resend of the RPC call and | |
479 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
480 | * of RFC5661. | |
481 | */ | |
12364a4f | 482 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
483 | __func__, |
484 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
485 | res->sr_slot->seq_nr); | |
14516c3a TM |
486 | goto out_retry; |
487 | default: | |
488 | /* Just update the slot sequence no. */ | |
dfb4f309 | 489 | ++res->sr_slot->seq_nr; |
b0df806c AA |
490 | } |
491 | out: | |
492 | /* The session may be reset by one of the error handlers. */ | |
493 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 494 | nfs41_sequence_free_slot(res); |
14516c3a TM |
495 | return 1; |
496 | out_retry: | |
d05dd4e9 | 497 | if (!rpc_restart_call(task)) |
14516c3a TM |
498 | goto out; |
499 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
500 | return 0; | |
b0df806c AA |
501 | } |
502 | ||
14516c3a TM |
503 | static int nfs4_sequence_done(struct rpc_task *task, |
504 | struct nfs4_sequence_res *res) | |
df896455 | 505 | { |
14516c3a TM |
506 | if (res->sr_session == NULL) |
507 | return 1; | |
508 | return nfs41_sequence_done(task, res); | |
df896455 TM |
509 | } |
510 | ||
510b8175 BH |
511 | /* |
512 | * nfs4_find_slot - efficiently look for a free slot | |
513 | * | |
514 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
515 | * If found, we mark the slot as used, update the highest_used_slotid, | |
516 | * and respectively set up the sequence operation args. | |
45d43c29 | 517 | * The slot number is returned if found, or NFS4_NO_SLOT otherwise. |
fbcd4abc AA |
518 | * |
519 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 | 520 | */ |
45d43c29 | 521 | static u32 |
40ead580 | 522 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 | 523 | { |
45d43c29 TM |
524 | u32 slotid; |
525 | u32 ret_id = NFS4_NO_SLOT; | |
510b8175 | 526 | |
45d43c29 | 527 | dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n", |
510b8175 BH |
528 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, |
529 | tbl->max_slots); | |
530 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
531 | if (slotid >= tbl->max_slots) | |
532 | goto out; | |
533 | __set_bit(slotid, tbl->used_slots); | |
45d43c29 TM |
534 | if (slotid > tbl->highest_used_slotid || |
535 | tbl->highest_used_slotid == NFS4_NO_SLOT) | |
510b8175 BH |
536 | tbl->highest_used_slotid = slotid; |
537 | ret_id = slotid; | |
538 | out: | |
539 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
540 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
541 | return ret_id; |
542 | } | |
543 | ||
9d12b216 TM |
544 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
545 | struct nfs4_sequence_res *res, int cache_reply) | |
546 | { | |
547 | args->sa_session = NULL; | |
548 | args->sa_cache_this = 0; | |
549 | if (cache_reply) | |
550 | args->sa_cache_this = 1; | |
551 | res->sr_session = NULL; | |
552 | res->sr_slot = NULL; | |
553 | } | |
554 | ||
dc70d7b3 | 555 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
556 | struct nfs4_sequence_args *args, |
557 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
558 | struct rpc_task *task) |
559 | { | |
fbcd4abc AA |
560 | struct nfs4_slot *slot; |
561 | struct nfs4_slot_table *tbl; | |
45d43c29 | 562 | u32 slotid; |
fbcd4abc AA |
563 | |
564 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 565 | /* slot already allocated? */ |
dfb4f309 | 566 | if (res->sr_slot != NULL) |
ce5039c1 AA |
567 | return 0; |
568 | ||
fbcd4abc AA |
569 | tbl = &session->fc_slot_table; |
570 | ||
571 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 572 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 573 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 574 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 575 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 576 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 577 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 578 | return -EAGAIN; |
b069d94a AA |
579 | } |
580 | ||
689cf5c1 AB |
581 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
582 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
583 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
584 | spin_unlock(&tbl->slot_tbl_lock); | |
585 | dprintk("%s enforce FIFO order\n", __func__); | |
586 | return -EAGAIN; | |
587 | } | |
588 | ||
40ead580 | 589 | slotid = nfs4_find_slot(tbl); |
45d43c29 | 590 | if (slotid == NFS4_NO_SLOT) { |
fbcd4abc AA |
591 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
592 | spin_unlock(&tbl->slot_tbl_lock); | |
593 | dprintk("<-- %s: no free slots\n", __func__); | |
594 | return -EAGAIN; | |
595 | } | |
596 | spin_unlock(&tbl->slot_tbl_lock); | |
597 | ||
689cf5c1 | 598 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 599 | slot = tbl->slots + slotid; |
99fe60d0 | 600 | args->sa_session = session; |
fbcd4abc | 601 | args->sa_slotid = slotid; |
fbcd4abc AA |
602 | |
603 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
604 | ||
99fe60d0 | 605 | res->sr_session = session; |
dfb4f309 | 606 | res->sr_slot = slot; |
fbcd4abc | 607 | res->sr_renewal_time = jiffies; |
2a6e26cd | 608 | res->sr_status_flags = 0; |
fbcd4abc AA |
609 | /* |
610 | * sr_status is only set in decode_sequence, and so will remain | |
611 | * set to 1 if an rpc level failure occurs. | |
612 | */ | |
613 | res->sr_status = 1; | |
ce5039c1 AA |
614 | return 0; |
615 | } | |
dc70d7b3 | 616 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 617 | |
035168ab | 618 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
619 | struct nfs4_sequence_args *args, |
620 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
621 | struct rpc_task *task) |
622 | { | |
035168ab | 623 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
624 | int ret = 0; |
625 | ||
9d12b216 | 626 | if (session == NULL) |
035168ab | 627 | goto out; |
035168ab | 628 | |
12364a4f | 629 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
630 | __func__, session->clp, session, res->sr_slot ? |
631 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 632 | |
9d12b216 | 633 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
634 | out: |
635 | dprintk("<-- %s status=%d\n", __func__, ret); | |
636 | return ret; | |
637 | } | |
638 | ||
639 | struct nfs41_call_sync_data { | |
035168ab | 640 | const struct nfs_server *seq_server; |
ce5039c1 AA |
641 | struct nfs4_sequence_args *seq_args; |
642 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
643 | }; |
644 | ||
645 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
646 | { | |
647 | struct nfs41_call_sync_data *data = calldata; | |
648 | ||
035168ab TM |
649 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
650 | ||
651 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
9d12b216 | 652 | data->seq_res, task)) |
ce5039c1 AA |
653 | return; |
654 | rpc_call_start(task); | |
655 | } | |
656 | ||
b257957e AB |
657 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
658 | { | |
659 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
660 | nfs41_call_sync_prepare(task, calldata); | |
661 | } | |
662 | ||
69ab40c4 AA |
663 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
664 | { | |
665 | struct nfs41_call_sync_data *data = calldata; | |
666 | ||
14516c3a | 667 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
668 | } |
669 | ||
ce5039c1 AA |
670 | struct rpc_call_ops nfs41_call_sync_ops = { |
671 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 672 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
673 | }; |
674 | ||
b257957e AB |
675 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
676 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
677 | .rpc_call_done = nfs41_call_sync_done, | |
678 | }; | |
679 | ||
7c513058 BS |
680 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
681 | struct nfs_server *server, | |
ce5039c1 AA |
682 | struct rpc_message *msg, |
683 | struct nfs4_sequence_args *args, | |
684 | struct nfs4_sequence_res *res, | |
b257957e | 685 | int privileged) |
ce5039c1 AA |
686 | { |
687 | int ret; | |
688 | struct rpc_task *task; | |
689 | struct nfs41_call_sync_data data = { | |
035168ab | 690 | .seq_server = server, |
ce5039c1 AA |
691 | .seq_args = args, |
692 | .seq_res = res, | |
ce5039c1 AA |
693 | }; |
694 | struct rpc_task_setup task_setup = { | |
7c513058 | 695 | .rpc_client = clnt, |
ce5039c1 AA |
696 | .rpc_message = msg, |
697 | .callback_ops = &nfs41_call_sync_ops, | |
698 | .callback_data = &data | |
699 | }; | |
700 | ||
b257957e AB |
701 | if (privileged) |
702 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
703 | task = rpc_run_task(&task_setup); |
704 | if (IS_ERR(task)) | |
705 | ret = PTR_ERR(task); | |
706 | else { | |
707 | ret = task->tk_status; | |
708 | rpc_put_task(task); | |
709 | } | |
710 | return ret; | |
711 | } | |
712 | ||
7c513058 BS |
713 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
714 | struct nfs_server *server, | |
cccef3b9 AA |
715 | struct rpc_message *msg, |
716 | struct nfs4_sequence_args *args, | |
717 | struct nfs4_sequence_res *res, | |
718 | int cache_reply) | |
719 | { | |
9d12b216 TM |
720 | nfs41_init_sequence(args, res, cache_reply); |
721 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); | |
cccef3b9 AA |
722 | } |
723 | ||
df896455 | 724 | #else |
9d12b216 TM |
725 | static inline |
726 | void nfs41_init_sequence(struct nfs4_sequence_args *args, | |
727 | struct nfs4_sequence_res *res, int cache_reply) | |
728 | { | |
729 | } | |
730 | ||
14516c3a TM |
731 | static int nfs4_sequence_done(struct rpc_task *task, |
732 | struct nfs4_sequence_res *res) | |
df896455 | 733 | { |
14516c3a | 734 | return 1; |
df896455 | 735 | } |
cccef3b9 AA |
736 | #endif /* CONFIG_NFS_V4_1 */ |
737 | ||
7c513058 BS |
738 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
739 | struct nfs_server *server, | |
cccef3b9 AA |
740 | struct rpc_message *msg, |
741 | struct nfs4_sequence_args *args, | |
742 | struct nfs4_sequence_res *res, | |
743 | int cache_reply) | |
744 | { | |
9d12b216 | 745 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 746 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
747 | } |
748 | ||
e73b83f2 | 749 | static inline |
7c513058 BS |
750 | int nfs4_call_sync(struct rpc_clnt *clnt, |
751 | struct nfs_server *server, | |
e73b83f2 BS |
752 | struct rpc_message *msg, |
753 | struct nfs4_sequence_args *args, | |
754 | struct nfs4_sequence_res *res, | |
755 | int cache_reply) | |
756 | { | |
7c513058 BS |
757 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
758 | args, res, cache_reply); | |
e73b83f2 | 759 | } |
cccef3b9 | 760 | |
38478b24 | 761 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 762 | { |
38478b24 | 763 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 764 | |
38478b24 | 765 | spin_lock(&dir->i_lock); |
40d24704 | 766 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
a9a4a87a | 767 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 768 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 769 | dir->i_version = cinfo->after; |
38478b24 | 770 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
771 | } |
772 | ||
e56e0b78 | 773 | struct nfs4_opendata { |
c6d00e63 | 774 | struct kref kref; |
e56e0b78 TM |
775 | struct nfs_openargs o_arg; |
776 | struct nfs_openres o_res; | |
cdd4e68b TM |
777 | struct nfs_open_confirmargs c_arg; |
778 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
779 | struct nfs4_string owner_name; |
780 | struct nfs4_string group_name; | |
e56e0b78 TM |
781 | struct nfs_fattr f_attr; |
782 | struct nfs_fattr dir_attr; | |
e56e0b78 | 783 | struct dentry *dir; |
82a2c1b7 | 784 | struct dentry *dentry; |
e56e0b78 | 785 | struct nfs4_state_owner *owner; |
aac00a8d | 786 | struct nfs4_state *state; |
e56e0b78 | 787 | struct iattr attrs; |
26e976a8 | 788 | unsigned long timestamp; |
3e309914 | 789 | unsigned int rpc_done : 1; |
24ac23ab TM |
790 | int rpc_status; |
791 | int cancelled; | |
e56e0b78 TM |
792 | }; |
793 | ||
2ced46c2 TM |
794 | |
795 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
796 | { | |
797 | p->o_res.f_attr = &p->f_attr; | |
798 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
799 | p->o_res.seqid = p->o_arg.seqid; |
800 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
801 | p->o_res.server = p->o_arg.server; |
802 | nfs_fattr_init(&p->f_attr); | |
803 | nfs_fattr_init(&p->dir_attr); | |
6926afd1 | 804 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
805 | } |
806 | ||
82a2c1b7 | 807 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 808 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
809 | const struct iattr *attrs, |
810 | gfp_t gfp_mask) | |
e56e0b78 | 811 | { |
82a2c1b7 | 812 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
813 | struct inode *dir = parent->d_inode; |
814 | struct nfs_server *server = NFS_SERVER(dir); | |
815 | struct nfs4_opendata *p; | |
816 | ||
8535b2be | 817 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
818 | if (p == NULL) |
819 | goto err; | |
8535b2be | 820 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
821 | if (p->o_arg.seqid == NULL) |
822 | goto err_free; | |
82a2c1b7 AV |
823 | nfs_sb_active(dentry->d_sb); |
824 | p->dentry = dget(dentry); | |
e56e0b78 TM |
825 | p->dir = parent; |
826 | p->owner = sp; | |
827 | atomic_inc(&sp->so_count); | |
828 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
829 | p->o_arg.open_flags = flags; |
830 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 831 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 832 | p->o_arg.id = sp->so_seqid.owner_id; |
82a2c1b7 | 833 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
834 | p->o_arg.server = server; |
835 | p->o_arg.bitmask = server->attr_bitmask; | |
6926afd1 | 836 | p->o_arg.dir_bitmask = server->cache_consistency_bitmask; |
e56e0b78 | 837 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 838 | if (attrs != NULL && attrs->ia_valid != 0) { |
d77d76ff TM |
839 | u32 *s; |
840 | ||
e56e0b78 TM |
841 | p->o_arg.u.attrs = &p->attrs; |
842 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
843 | s = (u32 *) p->o_arg.u.verifier.data; |
844 | s[0] = jiffies; | |
845 | s[1] = current->pid; | |
e56e0b78 | 846 | } |
cdd4e68b TM |
847 | p->c_arg.fh = &p->o_res.fh; |
848 | p->c_arg.stateid = &p->o_res.stateid; | |
849 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 850 | nfs4_init_opendata_res(p); |
c6d00e63 | 851 | kref_init(&p->kref); |
e56e0b78 TM |
852 | return p; |
853 | err_free: | |
854 | kfree(p); | |
855 | err: | |
856 | dput(parent); | |
857 | return NULL; | |
858 | } | |
859 | ||
c6d00e63 | 860 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 861 | { |
c6d00e63 TM |
862 | struct nfs4_opendata *p = container_of(kref, |
863 | struct nfs4_opendata, kref); | |
82a2c1b7 | 864 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
865 | |
866 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
867 | if (p->state != NULL) |
868 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
869 | nfs4_put_state_owner(p->owner); |
870 | dput(p->dir); | |
82a2c1b7 AV |
871 | dput(p->dentry); |
872 | nfs_sb_deactive(sb); | |
6926afd1 | 873 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
874 | kfree(p); |
875 | } | |
876 | ||
877 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
878 | { | |
879 | if (p != NULL) | |
880 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
881 | } |
882 | ||
06f814a3 TM |
883 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
884 | { | |
06f814a3 TM |
885 | int ret; |
886 | ||
06f814a3 | 887 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
888 | return ret; |
889 | } | |
890 | ||
dc0b027d | 891 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
892 | { |
893 | int ret = 0; | |
dc0b027d | 894 | |
536e43d1 | 895 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
896 | goto out; |
897 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 898 | case FMODE_READ: |
88069f77 TM |
899 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
900 | && state->n_rdonly != 0; | |
6ee41268 TM |
901 | break; |
902 | case FMODE_WRITE: | |
88069f77 TM |
903 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
904 | && state->n_wronly != 0; | |
6ee41268 TM |
905 | break; |
906 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
907 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
908 | && state->n_rdwr != 0; | |
6ee41268 | 909 | } |
dc0b027d | 910 | out: |
6ee41268 TM |
911 | return ret; |
912 | } | |
913 | ||
dc0b027d | 914 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 915 | { |
652f89f6 TM |
916 | if (delegation == NULL) |
917 | return 0; | |
dc0b027d | 918 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 919 | return 0; |
15c831bf | 920 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 921 | return 0; |
b7391f44 | 922 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
923 | return 1; |
924 | } | |
925 | ||
dc0b027d | 926 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 927 | { |
dc0b027d | 928 | switch (fmode) { |
e7616923 TM |
929 | case FMODE_WRITE: |
930 | state->n_wronly++; | |
931 | break; | |
932 | case FMODE_READ: | |
933 | state->n_rdonly++; | |
934 | break; | |
935 | case FMODE_READ|FMODE_WRITE: | |
936 | state->n_rdwr++; | |
937 | } | |
dc0b027d | 938 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
939 | } |
940 | ||
dc0b027d | 941 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
942 | { |
943 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
944 | nfs4_stateid_copy(&state->stateid, stateid); |
945 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 946 | switch (fmode) { |
003707c7 TM |
947 | case FMODE_READ: |
948 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
949 | break; | |
950 | case FMODE_WRITE: | |
951 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
952 | break; | |
953 | case FMODE_READ|FMODE_WRITE: | |
954 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
955 | } | |
e7616923 TM |
956 | } |
957 | ||
dc0b027d | 958 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 959 | { |
8bda4e4c | 960 | write_seqlock(&state->seqlock); |
dc0b027d | 961 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 962 | write_sequnlock(&state->seqlock); |
003707c7 TM |
963 | } |
964 | ||
dc0b027d | 965 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 966 | { |
8bda4e4c TM |
967 | /* |
968 | * Protect the call to nfs4_state_set_mode_locked and | |
969 | * serialise the stateid update | |
970 | */ | |
971 | write_seqlock(&state->seqlock); | |
003707c7 | 972 | if (deleg_stateid != NULL) { |
f597c537 | 973 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
974 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
975 | } | |
976 | if (open_stateid != NULL) | |
dc0b027d | 977 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
978 | write_sequnlock(&state->seqlock); |
979 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 980 | update_open_stateflags(state, fmode); |
ec073428 | 981 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
982 | } |
983 | ||
dc0b027d | 984 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
985 | { |
986 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
987 | struct nfs_delegation *deleg_cur; | |
988 | int ret = 0; | |
989 | ||
dc0b027d | 990 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
991 | |
992 | rcu_read_lock(); | |
993 | deleg_cur = rcu_dereference(nfsi->delegation); | |
994 | if (deleg_cur == NULL) | |
995 | goto no_delegation; | |
996 | ||
997 | spin_lock(&deleg_cur->lock); | |
998 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 999 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1000 | goto no_delegation_unlock; |
1001 | ||
1002 | if (delegation == NULL) | |
1003 | delegation = &deleg_cur->stateid; | |
f597c537 | 1004 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1005 | goto no_delegation_unlock; |
1006 | ||
b7391f44 | 1007 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1008 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1009 | ret = 1; |
1010 | no_delegation_unlock: | |
1011 | spin_unlock(&deleg_cur->lock); | |
1012 | no_delegation: | |
1013 | rcu_read_unlock(); | |
1014 | ||
1015 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1016 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1017 | ret = 1; |
1018 | } | |
1019 | ||
1020 | return ret; | |
1021 | } | |
1022 | ||
1023 | ||
dc0b027d | 1024 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1025 | { |
1026 | struct nfs_delegation *delegation; | |
1027 | ||
1028 | rcu_read_lock(); | |
1029 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1030 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1031 | rcu_read_unlock(); |
1032 | return; | |
1033 | } | |
1034 | rcu_read_unlock(); | |
1035 | nfs_inode_return_delegation(inode); | |
1036 | } | |
1037 | ||
6ee41268 | 1038 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1039 | { |
1040 | struct nfs4_state *state = opendata->state; | |
1041 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1042 | struct nfs_delegation *delegation; | |
536e43d1 | 1043 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1044 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1045 | nfs4_stateid stateid; |
1046 | int ret = -EAGAIN; | |
1047 | ||
aac00a8d | 1048 | for (;;) { |
dc0b027d | 1049 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1050 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1051 | if (can_open_cached(state, fmode, open_mode)) { |
1052 | update_open_stateflags(state, fmode); | |
6ee41268 | 1053 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1054 | goto out_return_state; |
1055 | } | |
1056 | spin_unlock(&state->owner->so_lock); | |
1057 | } | |
34310430 TM |
1058 | rcu_read_lock(); |
1059 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1060 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1061 | rcu_read_unlock(); |
aac00a8d | 1062 | break; |
34310430 | 1063 | } |
aac00a8d | 1064 | /* Save the delegation */ |
f597c537 | 1065 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1066 | rcu_read_unlock(); |
af22f94a | 1067 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1068 | if (ret != 0) |
1069 | goto out; | |
1070 | ret = -EAGAIN; | |
34310430 TM |
1071 | |
1072 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1073 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1074 | goto out_return_state; |
aac00a8d | 1075 | } |
aac00a8d TM |
1076 | out: |
1077 | return ERR_PTR(ret); | |
1078 | out_return_state: | |
1079 | atomic_inc(&state->count); | |
1080 | return state; | |
1081 | } | |
1082 | ||
24ac23ab TM |
1083 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1084 | { | |
1085 | struct inode *inode; | |
1086 | struct nfs4_state *state = NULL; | |
003707c7 | 1087 | struct nfs_delegation *delegation; |
1b370bc2 | 1088 | int ret; |
24ac23ab | 1089 | |
aac00a8d | 1090 | if (!data->rpc_done) { |
6ee41268 | 1091 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1092 | goto out; |
1093 | } | |
1094 | ||
1b370bc2 | 1095 | ret = -EAGAIN; |
24ac23ab | 1096 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1097 | goto err; |
24ac23ab | 1098 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1099 | ret = PTR_ERR(inode); |
03f28e3a | 1100 | if (IS_ERR(inode)) |
1b370bc2 TM |
1101 | goto err; |
1102 | ret = -ENOMEM; | |
24ac23ab TM |
1103 | state = nfs4_get_open_state(inode, data->owner); |
1104 | if (state == NULL) | |
1b370bc2 | 1105 | goto err_put_inode; |
549d6ed5 | 1106 | if (data->o_res.delegation_type != 0) { |
4e0038b6 | 1107 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; |
549d6ed5 TM |
1108 | int delegation_flags = 0; |
1109 | ||
003707c7 TM |
1110 | rcu_read_lock(); |
1111 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1112 | if (delegation) | |
1113 | delegation_flags = delegation->flags; | |
1114 | rcu_read_unlock(); | |
652f89f6 TM |
1115 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { |
1116 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1117 | "returning a delegation for " | |
1118 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
4e0038b6 | 1119 | clp->cl_hostname); |
652f89f6 | 1120 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1121 | nfs_inode_set_delegation(state->inode, |
1122 | data->owner->so_cred, | |
1123 | &data->o_res); | |
1124 | else | |
1125 | nfs_inode_reclaim_delegation(state->inode, | |
1126 | data->owner->so_cred, | |
1127 | &data->o_res); | |
1128 | } | |
34310430 TM |
1129 | |
1130 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1131 | data->o_arg.fmode); |
24ac23ab | 1132 | iput(inode); |
aac00a8d | 1133 | out: |
24ac23ab | 1134 | return state; |
1b370bc2 TM |
1135 | err_put_inode: |
1136 | iput(inode); | |
1137 | err: | |
1138 | return ERR_PTR(ret); | |
24ac23ab TM |
1139 | } |
1140 | ||
864472e9 TM |
1141 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1142 | { | |
1143 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1144 | struct nfs_open_context *ctx; | |
1145 | ||
1146 | spin_lock(&state->inode->i_lock); | |
1147 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1148 | if (ctx->state != state) | |
1149 | continue; | |
1150 | get_nfs_open_context(ctx); | |
1151 | spin_unlock(&state->inode->i_lock); | |
1152 | return ctx; | |
1153 | } | |
1154 | spin_unlock(&state->inode->i_lock); | |
1155 | return ERR_PTR(-ENOENT); | |
1156 | } | |
1157 | ||
6f220ed5 TM |
1158 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1159 | { | |
1160 | struct nfs4_opendata *opendata; | |
1161 | ||
3d4ff43d | 1162 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1163 | if (opendata == NULL) |
1164 | return ERR_PTR(-ENOMEM); | |
1165 | opendata->state = state; | |
1166 | atomic_inc(&state->count); | |
1167 | return opendata; | |
1168 | } | |
1169 | ||
dc0b027d | 1170 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1171 | { |
2ced46c2 | 1172 | struct nfs4_state *newstate; |
864472e9 TM |
1173 | int ret; |
1174 | ||
dc0b027d TM |
1175 | opendata->o_arg.open_flags = 0; |
1176 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1177 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1178 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1179 | nfs4_init_opendata_res(opendata); | |
b257957e | 1180 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1181 | if (ret != 0) |
1182 | return ret; | |
2ced46c2 | 1183 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1184 | if (IS_ERR(newstate)) |
1185 | return PTR_ERR(newstate); | |
643168c2 | 1186 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1187 | *res = newstate; |
864472e9 TM |
1188 | return 0; |
1189 | } | |
1190 | ||
1191 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1192 | { | |
864472e9 | 1193 | struct nfs4_state *newstate; |
864472e9 TM |
1194 | int ret; |
1195 | ||
1196 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1197 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1198 | smp_rmb(); |
1199 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1200 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1201 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1202 | if (ret != 0) |
1203 | return ret; | |
2ced46c2 TM |
1204 | if (newstate != state) |
1205 | return -ESTALE; | |
864472e9 TM |
1206 | } |
1207 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1208 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1209 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1210 | if (ret != 0) |
1211 | return ret; | |
2ced46c2 TM |
1212 | if (newstate != state) |
1213 | return -ESTALE; | |
864472e9 TM |
1214 | } |
1215 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1216 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1217 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1218 | if (ret != 0) |
1219 | return ret; | |
2ced46c2 TM |
1220 | if (newstate != state) |
1221 | return -ESTALE; | |
864472e9 | 1222 | } |
1ac7e2fd TM |
1223 | /* |
1224 | * We may have performed cached opens for all three recoveries. | |
1225 | * Check if we need to update the current stateid. | |
1226 | */ | |
1227 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1228 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1229 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1230 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1231 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1232 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1233 | } |
864472e9 TM |
1234 | return 0; |
1235 | } | |
1236 | ||
1da177e4 LT |
1237 | /* |
1238 | * OPEN_RECLAIM: | |
1239 | * reclaim state on the server after a reboot. | |
1da177e4 | 1240 | */ |
539cd03a | 1241 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1242 | { |
1ac7e2fd | 1243 | struct nfs_delegation *delegation; |
864472e9 | 1244 | struct nfs4_opendata *opendata; |
dc0b027d | 1245 | fmode_t delegation_type = 0; |
1da177e4 LT |
1246 | int status; |
1247 | ||
6f220ed5 TM |
1248 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1249 | if (IS_ERR(opendata)) | |
1250 | return PTR_ERR(opendata); | |
864472e9 TM |
1251 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1252 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1253 | rcu_read_lock(); |
1254 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1255 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1256 | delegation_type = delegation->type; |
1ac7e2fd | 1257 | rcu_read_unlock(); |
864472e9 TM |
1258 | opendata->o_arg.u.delegation_type = delegation_type; |
1259 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1260 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1261 | return status; |
1262 | } | |
1263 | ||
539cd03a | 1264 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1265 | { |
1266 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1267 | struct nfs4_exception exception = { }; | |
1268 | int err; | |
1269 | do { | |
539cd03a | 1270 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1271 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1272 | break; |
1273 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1274 | } while (exception.retry); |
1275 | return err; | |
1276 | } | |
1277 | ||
864472e9 TM |
1278 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1279 | { | |
1280 | struct nfs_open_context *ctx; | |
1281 | int ret; | |
1282 | ||
1283 | ctx = nfs4_state_find_open_context(state); | |
1284 | if (IS_ERR(ctx)) | |
1285 | return PTR_ERR(ctx); | |
539cd03a | 1286 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1287 | put_nfs_open_context(ctx); |
1288 | return ret; | |
1289 | } | |
1290 | ||
13437e12 | 1291 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1292 | { |
e56e0b78 | 1293 | struct nfs4_opendata *opendata; |
864472e9 | 1294 | int ret; |
1da177e4 | 1295 | |
6f220ed5 TM |
1296 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1297 | if (IS_ERR(opendata)) | |
1298 | return PTR_ERR(opendata); | |
e56e0b78 | 1299 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1300 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1301 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1302 | nfs4_opendata_put(opendata); |
864472e9 | 1303 | return ret; |
1da177e4 LT |
1304 | } |
1305 | ||
13437e12 | 1306 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1307 | { |
1308 | struct nfs4_exception exception = { }; | |
539cd03a | 1309 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1310 | int err; |
1311 | do { | |
13437e12 | 1312 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1313 | switch (err) { |
1314 | case 0: | |
965b5d67 TM |
1315 | case -ENOENT: |
1316 | case -ESTALE: | |
1317 | goto out; | |
bcfa49f6 RL |
1318 | case -NFS4ERR_BADSESSION: |
1319 | case -NFS4ERR_BADSLOT: | |
1320 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1321 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1322 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1323 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1324 | goto out; |
1da177e4 LT |
1325 | case -NFS4ERR_STALE_CLIENTID: |
1326 | case -NFS4ERR_STALE_STATEID: | |
1327 | case -NFS4ERR_EXPIRED: | |
1328 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1329 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1330 | goto out; |
1331 | case -ERESTARTSYS: | |
1332 | /* | |
1333 | * The show must go on: exit, but mark the | |
1334 | * stateid as needing recovery. | |
1335 | */ | |
a1d0b5ee | 1336 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1337 | case -NFS4ERR_ADMIN_REVOKED: |
1338 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1339 | nfs_inode_find_state_and_recover(state->inode, |
1340 | stateid); | |
0400a6b0 | 1341 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1342 | case -EKEYEXPIRED: |
1343 | /* | |
1344 | * User RPCSEC_GSS context has expired. | |
1345 | * We cannot recover this stateid now, so | |
1346 | * skip it and allow recovery thread to | |
1347 | * proceed. | |
1348 | */ | |
965b5d67 TM |
1349 | case -ENOMEM: |
1350 | err = 0; | |
1351 | goto out; | |
1da177e4 LT |
1352 | } |
1353 | err = nfs4_handle_exception(server, err, &exception); | |
1354 | } while (exception.retry); | |
965b5d67 | 1355 | out: |
1da177e4 LT |
1356 | return err; |
1357 | } | |
1358 | ||
cdd4e68b TM |
1359 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1360 | { | |
1361 | struct nfs4_opendata *data = calldata; | |
1362 | ||
1363 | data->rpc_status = task->tk_status; | |
26e976a8 | 1364 | if (data->rpc_status == 0) { |
f597c537 | 1365 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1366 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1367 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1368 | data->rpc_done = 1; |
26e976a8 | 1369 | } |
cdd4e68b TM |
1370 | } |
1371 | ||
1372 | static void nfs4_open_confirm_release(void *calldata) | |
1373 | { | |
1374 | struct nfs4_opendata *data = calldata; | |
1375 | struct nfs4_state *state = NULL; | |
1376 | ||
1377 | /* If this request hasn't been cancelled, do nothing */ | |
1378 | if (data->cancelled == 0) | |
1379 | goto out_free; | |
1380 | /* In case of error, no cleanup! */ | |
3e309914 | 1381 | if (!data->rpc_done) |
cdd4e68b | 1382 | goto out_free; |
cdd4e68b | 1383 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1384 | if (!IS_ERR(state)) |
643168c2 | 1385 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1386 | out_free: |
c6d00e63 | 1387 | nfs4_opendata_put(data); |
cdd4e68b TM |
1388 | } |
1389 | ||
1390 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1391 | .rpc_call_done = nfs4_open_confirm_done, |
1392 | .rpc_release = nfs4_open_confirm_release, | |
1393 | }; | |
1394 | ||
1395 | /* | |
1396 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1397 | */ | |
1398 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1399 | { | |
1400 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1401 | struct rpc_task *task; | |
5138fde0 TM |
1402 | struct rpc_message msg = { |
1403 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1404 | .rpc_argp = &data->c_arg, | |
1405 | .rpc_resp = &data->c_res, | |
1406 | .rpc_cred = data->owner->so_cred, | |
1407 | }; | |
c970aa85 TM |
1408 | struct rpc_task_setup task_setup_data = { |
1409 | .rpc_client = server->client, | |
5138fde0 | 1410 | .rpc_message = &msg, |
c970aa85 TM |
1411 | .callback_ops = &nfs4_open_confirm_ops, |
1412 | .callback_data = data, | |
101070ca | 1413 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1414 | .flags = RPC_TASK_ASYNC, |
1415 | }; | |
1da177e4 LT |
1416 | int status; |
1417 | ||
c6d00e63 | 1418 | kref_get(&data->kref); |
3e309914 TM |
1419 | data->rpc_done = 0; |
1420 | data->rpc_status = 0; | |
5138fde0 | 1421 | data->timestamp = jiffies; |
c970aa85 | 1422 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1423 | if (IS_ERR(task)) |
cdd4e68b | 1424 | return PTR_ERR(task); |
cdd4e68b TM |
1425 | status = nfs4_wait_for_completion_rpc_task(task); |
1426 | if (status != 0) { | |
1427 | data->cancelled = 1; | |
1428 | smp_wmb(); | |
1429 | } else | |
1430 | status = data->rpc_status; | |
e6b3c4db | 1431 | rpc_put_task(task); |
1da177e4 LT |
1432 | return status; |
1433 | } | |
1434 | ||
24ac23ab | 1435 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1436 | { |
24ac23ab TM |
1437 | struct nfs4_opendata *data = calldata; |
1438 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1439 | |
24ac23ab TM |
1440 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1441 | return; | |
aac00a8d TM |
1442 | /* |
1443 | * Check if we still need to send an OPEN call, or if we can use | |
1444 | * a delegation instead. | |
1445 | */ | |
1446 | if (data->state != NULL) { | |
1447 | struct nfs_delegation *delegation; | |
1448 | ||
dc0b027d | 1449 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1450 | goto out_no_action; |
aac00a8d TM |
1451 | rcu_read_lock(); |
1452 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1453 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1454 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1455 | goto unlock_no_action; | |
aac00a8d TM |
1456 | rcu_read_unlock(); |
1457 | } | |
24ac23ab | 1458 | /* Update sequence id. */ |
48c22eb2 | 1459 | data->o_arg.id = sp->so_seqid.owner_id; |
1f0e890d | 1460 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1461 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1462 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1463 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1464 | } | |
26e976a8 | 1465 | data->timestamp = jiffies; |
035168ab | 1466 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1467 | &data->o_arg.seq_args, |
9d12b216 | 1468 | &data->o_res.seq_res, task)) |
d898528c | 1469 | return; |
5138fde0 | 1470 | rpc_call_start(task); |
6ee41268 | 1471 | return; |
652f89f6 TM |
1472 | unlock_no_action: |
1473 | rcu_read_unlock(); | |
6ee41268 TM |
1474 | out_no_action: |
1475 | task->tk_action = NULL; | |
1476 | ||
24ac23ab | 1477 | } |
1da177e4 | 1478 | |
b257957e AB |
1479 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1480 | { | |
1481 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1482 | nfs4_open_prepare(task, calldata); | |
1483 | } | |
1484 | ||
24ac23ab TM |
1485 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1486 | { | |
1487 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1488 | |
24ac23ab | 1489 | data->rpc_status = task->tk_status; |
d898528c | 1490 | |
14516c3a TM |
1491 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1492 | return; | |
d898528c | 1493 | |
24ac23ab TM |
1494 | if (task->tk_status == 0) { |
1495 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1496 | case S_IFREG: |
1497 | break; | |
1498 | case S_IFLNK: | |
24ac23ab | 1499 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1500 | break; |
1501 | case S_IFDIR: | |
24ac23ab | 1502 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1503 | break; |
1504 | default: | |
24ac23ab | 1505 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1506 | } |
26e976a8 | 1507 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1508 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1509 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1510 | } |
3e309914 | 1511 | data->rpc_done = 1; |
24ac23ab | 1512 | } |
6f926b5b | 1513 | |
24ac23ab TM |
1514 | static void nfs4_open_release(void *calldata) |
1515 | { | |
1516 | struct nfs4_opendata *data = calldata; | |
1517 | struct nfs4_state *state = NULL; | |
1518 | ||
1519 | /* If this request hasn't been cancelled, do nothing */ | |
1520 | if (data->cancelled == 0) | |
1521 | goto out_free; | |
1522 | /* In case of error, no cleanup! */ | |
3e309914 | 1523 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1524 | goto out_free; |
1525 | /* In case we need an open_confirm, no cleanup! */ | |
1526 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1527 | goto out_free; | |
24ac23ab | 1528 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1529 | if (!IS_ERR(state)) |
643168c2 | 1530 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1531 | out_free: |
c6d00e63 | 1532 | nfs4_opendata_put(data); |
24ac23ab TM |
1533 | } |
1534 | ||
1535 | static const struct rpc_call_ops nfs4_open_ops = { | |
1536 | .rpc_call_prepare = nfs4_open_prepare, | |
1537 | .rpc_call_done = nfs4_open_done, | |
1538 | .rpc_release = nfs4_open_release, | |
1539 | }; | |
1540 | ||
b257957e AB |
1541 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1542 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1543 | .rpc_call_done = nfs4_open_done, | |
1544 | .rpc_release = nfs4_open_release, | |
1545 | }; | |
1546 | ||
1547 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1548 | { |
1549 | struct inode *dir = data->dir->d_inode; | |
1550 | struct nfs_server *server = NFS_SERVER(dir); | |
1551 | struct nfs_openargs *o_arg = &data->o_arg; | |
1552 | struct nfs_openres *o_res = &data->o_res; | |
1553 | struct rpc_task *task; | |
5138fde0 TM |
1554 | struct rpc_message msg = { |
1555 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1556 | .rpc_argp = o_arg, | |
1557 | .rpc_resp = o_res, | |
1558 | .rpc_cred = data->owner->so_cred, | |
1559 | }; | |
c970aa85 TM |
1560 | struct rpc_task_setup task_setup_data = { |
1561 | .rpc_client = server->client, | |
5138fde0 | 1562 | .rpc_message = &msg, |
c970aa85 TM |
1563 | .callback_ops = &nfs4_open_ops, |
1564 | .callback_data = data, | |
101070ca | 1565 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1566 | .flags = RPC_TASK_ASYNC, |
1567 | }; | |
24ac23ab TM |
1568 | int status; |
1569 | ||
9d12b216 | 1570 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1571 | kref_get(&data->kref); |
3e309914 TM |
1572 | data->rpc_done = 0; |
1573 | data->rpc_status = 0; | |
2ced46c2 | 1574 | data->cancelled = 0; |
b257957e AB |
1575 | if (isrecover) |
1576 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1577 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1578 | if (IS_ERR(task)) |
1579 | return PTR_ERR(task); | |
1580 | status = nfs4_wait_for_completion_rpc_task(task); | |
1581 | if (status != 0) { | |
1582 | data->cancelled = 1; | |
1583 | smp_wmb(); | |
1584 | } else | |
1585 | status = data->rpc_status; | |
1586 | rpc_put_task(task); | |
1587 | ||
1588 | return status; | |
1589 | } | |
1590 | ||
1591 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1592 | { | |
1593 | struct inode *dir = data->dir->d_inode; | |
1594 | struct nfs_openres *o_res = &data->o_res; | |
1595 | int status; | |
1596 | ||
1597 | status = nfs4_run_open_task(data, 1); | |
1598 | if (status != 0 || !data->rpc_done) | |
1599 | return status; | |
1600 | ||
6926afd1 TM |
1601 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1602 | ||
b257957e AB |
1603 | nfs_refresh_inode(dir, o_res->dir_attr); |
1604 | ||
1605 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1606 | status = _nfs4_proc_open_confirm(data); | |
1607 | if (status != 0) | |
1608 | return status; | |
1609 | } | |
1610 | ||
1611 | return status; | |
1612 | } | |
1613 | ||
1614 | /* | |
1615 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1616 | */ | |
1617 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1618 | { | |
1619 | struct inode *dir = data->dir->d_inode; | |
1620 | struct nfs_server *server = NFS_SERVER(dir); | |
1621 | struct nfs_openargs *o_arg = &data->o_arg; | |
1622 | struct nfs_openres *o_res = &data->o_res; | |
1623 | int status; | |
1624 | ||
1625 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1626 | if (!data->rpc_done) |
1627 | return status; | |
1628 | if (status != 0) { | |
1629 | if (status == -NFS4ERR_BADNAME && | |
1630 | !(o_arg->open_flags & O_CREAT)) | |
1631 | return -ENOENT; | |
24ac23ab | 1632 | return status; |
08ef7bd3 | 1633 | } |
24ac23ab | 1634 | |
6926afd1 TM |
1635 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1636 | ||
56ae19f3 TM |
1637 | if (o_arg->open_flags & O_CREAT) { |
1638 | update_changeattr(dir, &o_res->cinfo); | |
1639 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1640 | } else | |
1641 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1642 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1643 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1644 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1645 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1646 | if (status != 0) |
24ac23ab | 1647 | return status; |
1da177e4 LT |
1648 | } |
1649 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1650 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1651 | return 0; |
1da177e4 LT |
1652 | } |
1653 | ||
d83217c1 | 1654 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1655 | { |
a78cb57a | 1656 | unsigned int loop; |
6b30954e | 1657 | int ret; |
58d9714a | 1658 | |
a78cb57a | 1659 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1660 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1661 | if (ret != 0) |
a78cb57a | 1662 | break; |
e598d843 TM |
1663 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1664 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1665 | break; |
0400a6b0 | 1666 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1667 | ret = -EIO; |
6b30954e | 1668 | } |
a78cb57a | 1669 | return ret; |
58d9714a TM |
1670 | } |
1671 | ||
d83217c1 AA |
1672 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1673 | { | |
1674 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1675 | } | |
1676 | ||
1da177e4 LT |
1677 | /* |
1678 | * OPEN_EXPIRED: | |
1679 | * reclaim state on the server after a network partition. | |
1680 | * Assumes caller holds the appropriate lock | |
1681 | */ | |
539cd03a | 1682 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1683 | { |
e56e0b78 | 1684 | struct nfs4_opendata *opendata; |
864472e9 | 1685 | int ret; |
1da177e4 | 1686 | |
6f220ed5 TM |
1687 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1688 | if (IS_ERR(opendata)) | |
1689 | return PTR_ERR(opendata); | |
864472e9 | 1690 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1691 | if (ret == -ESTALE) |
3d4ff43d | 1692 | d_drop(ctx->dentry); |
c6d00e63 | 1693 | nfs4_opendata_put(opendata); |
864472e9 | 1694 | return ret; |
1da177e4 LT |
1695 | } |
1696 | ||
a9ed2e25 | 1697 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1698 | { |
539cd03a | 1699 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1700 | struct nfs4_exception exception = { }; |
1701 | int err; | |
1702 | ||
1703 | do { | |
539cd03a | 1704 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1705 | switch (err) { |
1706 | default: | |
1707 | goto out; | |
1708 | case -NFS4ERR_GRACE: | |
1709 | case -NFS4ERR_DELAY: | |
1710 | nfs4_handle_exception(server, err, &exception); | |
1711 | err = 0; | |
1712 | } | |
202b50dc | 1713 | } while (exception.retry); |
a9ed2e25 | 1714 | out: |
202b50dc TM |
1715 | return err; |
1716 | } | |
1717 | ||
1da177e4 LT |
1718 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1719 | { | |
1da177e4 | 1720 | struct nfs_open_context *ctx; |
864472e9 | 1721 | int ret; |
1da177e4 | 1722 | |
864472e9 TM |
1723 | ctx = nfs4_state_find_open_context(state); |
1724 | if (IS_ERR(ctx)) | |
1725 | return PTR_ERR(ctx); | |
539cd03a | 1726 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1727 | put_nfs_open_context(ctx); |
1728 | return ret; | |
1da177e4 LT |
1729 | } |
1730 | ||
f062eb6c | 1731 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 1732 | static int nfs41_check_expired_stateid(struct nfs4_state *state, nfs4_stateid *stateid, unsigned int flags) |
f062eb6c | 1733 | { |
b01dd1d8 | 1734 | int status = NFS_OK; |
f062eb6c BS |
1735 | struct nfs_server *server = NFS_SERVER(state->inode); |
1736 | ||
b01dd1d8 BS |
1737 | if (state->flags & flags) { |
1738 | status = nfs41_test_stateid(server, stateid); | |
1739 | if (status != NFS_OK) { | |
1740 | nfs41_free_stateid(server, stateid); | |
1741 | state->flags &= ~flags; | |
1742 | } | |
1743 | } | |
1744 | return status; | |
1745 | } | |
1746 | ||
1747 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1748 | { | |
1749 | int deleg_status, open_status; | |
1750 | int deleg_flags = 1 << NFS_DELEGATED_STATE; | |
1751 | int open_flags = (1 << NFS_O_RDONLY_STATE) | (1 << NFS_O_WRONLY_STATE) | (1 << NFS_O_RDWR_STATE); | |
1752 | ||
1753 | deleg_status = nfs41_check_expired_stateid(state, &state->stateid, deleg_flags); | |
1754 | open_status = nfs41_check_expired_stateid(state, &state->open_stateid, open_flags); | |
1755 | ||
1756 | if ((deleg_status == NFS_OK) && (open_status == NFS_OK)) | |
1757 | return NFS_OK; | |
f062eb6c BS |
1758 | return nfs4_open_expired(sp, state); |
1759 | } | |
1760 | #endif | |
1761 | ||
aa53ed54 JL |
1762 | /* |
1763 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1764 | * fields corresponding to attributes that were used to store the verifier. | |
1765 | * Make sure we clobber those fields in the later setattr call | |
1766 | */ | |
1767 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1768 | { | |
1769 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1770 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1771 | sattr->ia_valid |= ATTR_ATIME; | |
1772 | ||
1773 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1774 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1775 | sattr->ia_valid |= ATTR_MTIME; | |
1776 | } | |
1777 | ||
1da177e4 | 1778 | /* |
24ac23ab | 1779 | * Returns a referenced nfs4_state |
1da177e4 | 1780 | */ |
82a2c1b7 | 1781 | static int _nfs4_do_open(struct inode *dir, struct dentry *dentry, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res) |
1da177e4 LT |
1782 | { |
1783 | struct nfs4_state_owner *sp; | |
1784 | struct nfs4_state *state = NULL; | |
1785 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1786 | struct nfs4_opendata *opendata; |
aac00a8d | 1787 | int status; |
1da177e4 LT |
1788 | |
1789 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1790 | status = -ENOMEM; |
d1e284d5 TM |
1791 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1792 | if (sp == NULL) { | |
1da177e4 LT |
1793 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1794 | goto out_err; | |
1795 | } | |
58d9714a TM |
1796 | status = nfs4_recover_expired_lease(server); |
1797 | if (status != 0) | |
b4454fe1 | 1798 | goto err_put_state_owner; |
82a2c1b7 AV |
1799 | if (dentry->d_inode != NULL) |
1800 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1801 | status = -ENOMEM; |
82a2c1b7 | 1802 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1803 | if (opendata == NULL) |
95d35cb4 | 1804 | goto err_put_state_owner; |
1da177e4 | 1805 | |
82a2c1b7 AV |
1806 | if (dentry->d_inode != NULL) |
1807 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1808 | |
24ac23ab | 1809 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1810 | if (status != 0) |
c6d00e63 | 1811 | goto err_opendata_put; |
1da177e4 | 1812 | |
24ac23ab | 1813 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1814 | status = PTR_ERR(state); |
1815 | if (IS_ERR(state)) | |
c6d00e63 | 1816 | goto err_opendata_put; |
0df5dd4a | 1817 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1818 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1819 | |
1820 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1821 | nfs4_exclusive_attrset(opendata, sattr); | |
1822 | ||
1823 | nfs_fattr_init(opendata->o_res.f_attr); | |
1824 | status = nfs4_do_setattr(state->inode, cred, | |
1825 | opendata->o_res.f_attr, sattr, | |
1826 | state); | |
1827 | if (status == 0) | |
1828 | nfs_setattr_update_inode(state->inode, sattr); | |
1829 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1830 | } | |
c6d00e63 | 1831 | nfs4_opendata_put(opendata); |
1da177e4 | 1832 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1833 | *res = state; |
1834 | return 0; | |
c6d00e63 TM |
1835 | err_opendata_put: |
1836 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1837 | err_put_state_owner: |
1838 | nfs4_put_state_owner(sp); | |
1da177e4 | 1839 | out_err: |
1da177e4 LT |
1840 | *res = NULL; |
1841 | return status; | |
1842 | } | |
1843 | ||
1844 | ||
82a2c1b7 | 1845 | static struct nfs4_state *nfs4_do_open(struct inode *dir, struct dentry *dentry, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred) |
1da177e4 LT |
1846 | { |
1847 | struct nfs4_exception exception = { }; | |
1848 | struct nfs4_state *res; | |
1849 | int status; | |
1850 | ||
1851 | do { | |
82a2c1b7 | 1852 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1853 | if (status == 0) |
1854 | break; | |
1855 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1856 | * book-keeping w.r.t. state-changing operations | |
1857 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1858 | * It is actually a sign of a bug on the client or on the server. | |
1859 | * | |
1860 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1861 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1862 | * have unhashed the old state_owner for us, and that we can |
1863 | * therefore safely retry using a new one. We should still warn | |
1864 | * the user though... | |
1865 | */ | |
1866 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1867 | printk(KERN_WARNING "NFS: v4 server %s " |
1868 | " returned a bad sequence-id error!\n", | |
1869 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1870 | exception.retry = 1; |
1871 | continue; | |
1872 | } | |
550f5747 TM |
1873 | /* |
1874 | * BAD_STATEID on OPEN means that the server cancelled our | |
1875 | * state before it received the OPEN_CONFIRM. | |
1876 | * Recover by retrying the request as per the discussion | |
1877 | * on Page 181 of RFC3530. | |
1878 | */ | |
1879 | if (status == -NFS4ERR_BAD_STATEID) { | |
1880 | exception.retry = 1; | |
1881 | continue; | |
1882 | } | |
aac00a8d TM |
1883 | if (status == -EAGAIN) { |
1884 | /* We must have found a delegation */ | |
1885 | exception.retry = 1; | |
1886 | continue; | |
1887 | } | |
1da177e4 LT |
1888 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1889 | status, &exception)); | |
1890 | } while (exception.retry); | |
1891 | return res; | |
1892 | } | |
1893 | ||
659bfcd6 TM |
1894 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1895 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1896 | struct nfs4_state *state) | |
1da177e4 | 1897 | { |
3e4f6290 | 1898 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1899 | struct nfs_setattrargs arg = { |
3e4f6290 | 1900 | .fh = NFS_FH(inode), |
1da177e4 LT |
1901 | .iap = sattr, |
1902 | .server = server, | |
1903 | .bitmask = server->attr_bitmask, | |
1904 | }; | |
1905 | struct nfs_setattrres res = { | |
1906 | .fattr = fattr, | |
1907 | .server = server, | |
1908 | }; | |
1909 | struct rpc_message msg = { | |
659bfcd6 TM |
1910 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1911 | .rpc_argp = &arg, | |
1912 | .rpc_resp = &res, | |
1913 | .rpc_cred = cred, | |
1da177e4 | 1914 | }; |
26e976a8 | 1915 | unsigned long timestamp = jiffies; |
65e4308d | 1916 | int status; |
1da177e4 | 1917 | |
0e574af1 | 1918 | nfs_fattr_init(fattr); |
1da177e4 | 1919 | |
3e4f6290 TM |
1920 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1921 | /* Use that stateid */ | |
1922 | } else if (state != NULL) { | |
1e3987c3 | 1923 | nfs4_select_rw_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1924 | } else |
f597c537 | 1925 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 1926 | |
7c513058 | 1927 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1928 | if (status == 0 && state != NULL) |
1929 | renew_lease(server, timestamp); | |
65e4308d | 1930 | return status; |
1da177e4 LT |
1931 | } |
1932 | ||
659bfcd6 TM |
1933 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1934 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1935 | struct nfs4_state *state) | |
1da177e4 | 1936 | { |
3e4f6290 | 1937 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
1938 | struct nfs4_exception exception = { |
1939 | .state = state, | |
1940 | }; | |
1da177e4 LT |
1941 | int err; |
1942 | do { | |
1943 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1944 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1945 | &exception); |
1946 | } while (exception.retry); | |
1947 | return err; | |
1948 | } | |
1949 | ||
1950 | struct nfs4_closedata { | |
1951 | struct inode *inode; | |
1952 | struct nfs4_state *state; | |
1953 | struct nfs_closeargs arg; | |
1954 | struct nfs_closeres res; | |
516a6af6 | 1955 | struct nfs_fattr fattr; |
26e976a8 | 1956 | unsigned long timestamp; |
f7e8917a FI |
1957 | bool roc; |
1958 | u32 roc_barrier; | |
1da177e4 LT |
1959 | }; |
1960 | ||
963d8fe5 | 1961 | static void nfs4_free_closedata(void *data) |
9512135d | 1962 | { |
963d8fe5 TM |
1963 | struct nfs4_closedata *calldata = data; |
1964 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 1965 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 1966 | |
f7e8917a FI |
1967 | if (calldata->roc) |
1968 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1969 | nfs4_put_open_state(calldata->state); |
1970 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1971 | nfs4_put_state_owner(sp); |
643168c2 | 1972 | nfs_sb_deactive(sb); |
9512135d TM |
1973 | kfree(calldata); |
1974 | } | |
1975 | ||
88069f77 TM |
1976 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1977 | fmode_t fmode) | |
1978 | { | |
1979 | spin_lock(&state->owner->so_lock); | |
1980 | if (!(fmode & FMODE_READ)) | |
1981 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1982 | if (!(fmode & FMODE_WRITE)) | |
1983 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1984 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1985 | spin_unlock(&state->owner->so_lock); | |
1986 | } | |
1987 | ||
963d8fe5 | 1988 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1989 | { |
963d8fe5 | 1990 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1991 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1992 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1993 | ||
a3ca5651 | 1994 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
1995 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1996 | return; | |
1da177e4 LT |
1997 | /* hmm. we are done with the inode, and in the process of freeing |
1998 | * the state_owner. we keep this around to process errors | |
1999 | */ | |
1da177e4 LT |
2000 | switch (task->tk_status) { |
2001 | case 0: | |
f7e8917a FI |
2002 | if (calldata->roc) |
2003 | pnfs_roc_set_barrier(state->inode, | |
2004 | calldata->roc_barrier); | |
45328c35 | 2005 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2006 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2007 | nfs4_close_clear_stateid_flags(state, |
2008 | calldata->arg.fmode); | |
1da177e4 LT |
2009 | break; |
2010 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2011 | case -NFS4ERR_OLD_STATEID: |
2012 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2013 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2014 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2015 | break; |
1da177e4 | 2016 | default: |
72211dbe TM |
2017 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2018 | rpc_restart_call_prepare(task); | |
1da177e4 | 2019 | } |
72211dbe | 2020 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2021 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2022 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2023 | } |
2024 | ||
4ce70ada | 2025 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2026 | { |
4ce70ada | 2027 | struct nfs4_closedata *calldata = data; |
9512135d | 2028 | struct nfs4_state *state = calldata->state; |
88069f77 | 2029 | int call_close = 0; |
9512135d | 2030 | |
a3ca5651 | 2031 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2032 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2033 | return; |
003707c7 | 2034 | |
88069f77 TM |
2035 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2036 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2037 | spin_lock(&state->owner->so_lock); |
003707c7 | 2038 | /* Calculate the change in open mode */ |
e7616923 | 2039 | if (state->n_rdwr == 0) { |
003707c7 | 2040 | if (state->n_rdonly == 0) { |
88069f77 TM |
2041 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2042 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2043 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2044 | } |
2045 | if (state->n_wronly == 0) { | |
88069f77 TM |
2046 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2047 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2048 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2049 | } |
e7616923 | 2050 | } |
4cecb76f | 2051 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2052 | |
2053 | if (!call_close) { | |
963d8fe5 TM |
2054 | /* Note: exit _without_ calling nfs4_close_done */ |
2055 | task->tk_action = NULL; | |
a3ca5651 | 2056 | goto out; |
9512135d | 2057 | } |
88069f77 | 2058 | |
f7e8917a | 2059 | if (calldata->arg.fmode == 0) { |
88069f77 | 2060 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2061 | if (calldata->roc && |
2062 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2063 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2064 | task, NULL); | |
a3ca5651 | 2065 | goto out; |
f7e8917a FI |
2066 | } |
2067 | } | |
88069f77 | 2068 | |
516a6af6 | 2069 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2070 | calldata->timestamp = jiffies; |
035168ab | 2071 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
9d12b216 TM |
2072 | &calldata->arg.seq_args, |
2073 | &calldata->res.seq_res, | |
2074 | task)) | |
a3ca5651 | 2075 | goto out; |
5138fde0 | 2076 | rpc_call_start(task); |
a3ca5651 CL |
2077 | out: |
2078 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2079 | } |
2080 | ||
963d8fe5 | 2081 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2082 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2083 | .rpc_call_done = nfs4_close_done, |
2084 | .rpc_release = nfs4_free_closedata, | |
2085 | }; | |
2086 | ||
1da177e4 LT |
2087 | /* |
2088 | * It is possible for data to be read/written from a mem-mapped file | |
2089 | * after the sys_close call (which hits the vfs layer as a flush). | |
2090 | * This means that we can't safely call nfsv4 close on a file until | |
2091 | * the inode is cleared. This in turn means that we are not good | |
2092 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2093 | * share state even when we are done with one of the three share | |
2094 | * stateid's in the inode. | |
2095 | * | |
2096 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2097 | */ | |
643168c2 | 2098 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2099 | { |
4a35bd41 | 2100 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2101 | struct nfs4_closedata *calldata; |
b39e625b TM |
2102 | struct nfs4_state_owner *sp = state->owner; |
2103 | struct rpc_task *task; | |
5138fde0 TM |
2104 | struct rpc_message msg = { |
2105 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2106 | .rpc_cred = state->owner->so_cred, | |
2107 | }; | |
c970aa85 TM |
2108 | struct rpc_task_setup task_setup_data = { |
2109 | .rpc_client = server->client, | |
5138fde0 | 2110 | .rpc_message = &msg, |
c970aa85 | 2111 | .callback_ops = &nfs4_close_ops, |
101070ca | 2112 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2113 | .flags = RPC_TASK_ASYNC, |
2114 | }; | |
9512135d | 2115 | int status = -ENOMEM; |
1da177e4 | 2116 | |
8535b2be | 2117 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2118 | if (calldata == NULL) |
9512135d | 2119 | goto out; |
9d12b216 | 2120 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2121 | calldata->inode = state->inode; |
1da177e4 | 2122 | calldata->state = state; |
4a35bd41 | 2123 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2124 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2125 | /* Serialization for the sequence id */ |
8535b2be | 2126 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2127 | if (calldata->arg.seqid == NULL) |
2128 | goto out_free_calldata; | |
dc0b027d | 2129 | calldata->arg.fmode = 0; |
a65318bf | 2130 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2131 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2132 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2133 | calldata->res.server = server; |
f7e8917a | 2134 | calldata->roc = roc; |
643168c2 | 2135 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2136 | |
1174dd1f TM |
2137 | msg.rpc_argp = &calldata->arg; |
2138 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2139 | task_setup_data.callback_data = calldata; |
2140 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2141 | if (IS_ERR(task)) |
2142 | return PTR_ERR(task); | |
a49c3c77 TM |
2143 | status = 0; |
2144 | if (wait) | |
2145 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2146 | rpc_put_task(task); |
a49c3c77 | 2147 | return status; |
9512135d TM |
2148 | out_free_calldata: |
2149 | kfree(calldata); | |
2150 | out: | |
f7e8917a FI |
2151 | if (roc) |
2152 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2153 | nfs4_put_open_state(state); |
2154 | nfs4_put_state_owner(sp); | |
9512135d | 2155 | return status; |
1da177e4 LT |
2156 | } |
2157 | ||
2b484297 | 2158 | static struct inode * |
cd9a1c0e | 2159 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2160 | { |
1da177e4 | 2161 | struct nfs4_state *state; |
1da177e4 | 2162 | |
565277f6 | 2163 | /* Protect against concurrent sillydeletes */ |
3d4ff43d | 2164 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2165 | if (IS_ERR(state)) |
2166 | return ERR_CAST(state); | |
cd9a1c0e | 2167 | ctx->state = state; |
f46e0bd3 | 2168 | return igrab(state->inode); |
1da177e4 LT |
2169 | } |
2170 | ||
1185a552 | 2171 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2172 | { |
2173 | if (ctx->state == NULL) | |
2174 | return; | |
2175 | if (is_sync) | |
643168c2 | 2176 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2177 | else |
643168c2 | 2178 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2179 | } |
1da177e4 LT |
2180 | |
2181 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2182 | { | |
43652ad5 BH |
2183 | struct nfs4_server_caps_arg args = { |
2184 | .fhandle = fhandle, | |
2185 | }; | |
1da177e4 LT |
2186 | struct nfs4_server_caps_res res = {}; |
2187 | struct rpc_message msg = { | |
2188 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2189 | .rpc_argp = &args, |
1da177e4 LT |
2190 | .rpc_resp = &res, |
2191 | }; | |
2192 | int status; | |
2193 | ||
7c513058 | 2194 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2195 | if (status == 0) { |
2196 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2197 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2198 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2199 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2200 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2201 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2202 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2203 | server->caps |= NFS_CAP_ACLS; | |
2204 | if (res.has_links != 0) | |
2205 | server->caps |= NFS_CAP_HARDLINKS; | |
2206 | if (res.has_symlinks != 0) | |
2207 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2208 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2209 | server->caps |= NFS_CAP_FILEID; | |
2210 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2211 | server->caps |= NFS_CAP_MODE; | |
2212 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2213 | server->caps |= NFS_CAP_NLINK; | |
2214 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2215 | server->caps |= NFS_CAP_OWNER; | |
2216 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2217 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2218 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2219 | server->caps |= NFS_CAP_ATIME; | |
2220 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2221 | server->caps |= NFS_CAP_CTIME; | |
2222 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2223 | server->caps |= NFS_CAP_MTIME; | |
2224 | ||
a65318bf TM |
2225 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2226 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2227 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2228 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2229 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2230 | } |
cccef3b9 | 2231 | |
1da177e4 LT |
2232 | return status; |
2233 | } | |
2234 | ||
55a97593 | 2235 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2236 | { |
2237 | struct nfs4_exception exception = { }; | |
2238 | int err; | |
2239 | do { | |
2240 | err = nfs4_handle_exception(server, | |
2241 | _nfs4_server_capabilities(server, fhandle), | |
2242 | &exception); | |
2243 | } while (exception.retry); | |
2244 | return err; | |
2245 | } | |
2246 | ||
2247 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2248 | struct nfs_fsinfo *info) | |
2249 | { | |
1da177e4 LT |
2250 | struct nfs4_lookup_root_arg args = { |
2251 | .bitmask = nfs4_fattr_bitmap, | |
2252 | }; | |
2253 | struct nfs4_lookup_res res = { | |
2254 | .server = server, | |
0e574af1 | 2255 | .fattr = info->fattr, |
1da177e4 LT |
2256 | .fh = fhandle, |
2257 | }; | |
2258 | struct rpc_message msg = { | |
2259 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2260 | .rpc_argp = &args, | |
2261 | .rpc_resp = &res, | |
2262 | }; | |
008f55d0 | 2263 | |
0e574af1 | 2264 | nfs_fattr_init(info->fattr); |
7c513058 | 2265 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2266 | } |
2267 | ||
2268 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2269 | struct nfs_fsinfo *info) | |
2270 | { | |
2271 | struct nfs4_exception exception = { }; | |
2272 | int err; | |
2273 | do { | |
fb8a5ba8 BS |
2274 | err = _nfs4_lookup_root(server, fhandle, info); |
2275 | switch (err) { | |
2276 | case 0: | |
2277 | case -NFS4ERR_WRONGSEC: | |
2278 | break; | |
2279 | default: | |
2280 | err = nfs4_handle_exception(server, err, &exception); | |
2281 | } | |
1da177e4 LT |
2282 | } while (exception.retry); |
2283 | return err; | |
2284 | } | |
2285 | ||
8f70e95f BS |
2286 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2287 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2288 | { | |
2289 | struct rpc_auth *auth; | |
2290 | int ret; | |
2291 | ||
2292 | auth = rpcauth_create(flavor, server->client); | |
2293 | if (!auth) { | |
2294 | ret = -EIO; | |
2295 | goto out; | |
2296 | } | |
2297 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2298 | out: |
2299 | return ret; | |
2300 | } | |
2301 | ||
801a16dc | 2302 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2303 | struct nfs_fsinfo *info) |
1da177e4 | 2304 | { |
8f70e95f | 2305 | int i, len, status = 0; |
0fabee24 | 2306 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2307 | |
801a16dc BS |
2308 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2309 | flav_array[len] = RPC_AUTH_NULL; | |
2310 | len += 1; | |
8f70e95f BS |
2311 | |
2312 | for (i = 0; i < len; i++) { | |
2313 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2314 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2315 | continue; |
2316 | break; | |
8f70e95f | 2317 | } |
fb8a5ba8 BS |
2318 | /* |
2319 | * -EACCESS could mean that the user doesn't have correct permissions | |
2320 | * to access the mount. It could also mean that we tried to mount | |
2321 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2322 | * existing mount programs don't handle -EACCES very well so it should | |
2323 | * be mapped to -EPERM instead. | |
2324 | */ | |
2325 | if (status == -EACCES) | |
2326 | status = -EPERM; | |
801a16dc BS |
2327 | return status; |
2328 | } | |
2329 | ||
2330 | /* | |
2331 | * get the file handle for the "/" directory on the server | |
2332 | */ | |
2333 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2334 | struct nfs_fsinfo *info) | |
2335 | { | |
fca78d6d | 2336 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2337 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2338 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2339 | /* | |
2340 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2341 | * by nfs4_map_errors() as this function exits. | |
2342 | */ | |
fca78d6d | 2343 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2344 | if (status == 0) |
2345 | status = nfs4_server_capabilities(server, fhandle); | |
2346 | if (status == 0) | |
2347 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2348 | return nfs4_map_errors(status); |
1da177e4 LT |
2349 | } |
2350 | ||
6b97fd3d MN |
2351 | /* |
2352 | * Get locations and (maybe) other attributes of a referral. | |
2353 | * Note that we'll actually follow the referral later when | |
2354 | * we detect fsid mismatch in inode revalidation | |
2355 | */ | |
533eb461 AA |
2356 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, |
2357 | struct nfs_fattr *fattr, struct nfs_fh *fhandle) | |
6b97fd3d MN |
2358 | { |
2359 | int status = -ENOMEM; | |
2360 | struct page *page = NULL; | |
2361 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2362 | |
2363 | page = alloc_page(GFP_KERNEL); | |
2364 | if (page == NULL) | |
2365 | goto out; | |
2366 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2367 | if (locations == NULL) | |
2368 | goto out; | |
2369 | ||
c228fd3a | 2370 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2371 | if (status != 0) |
2372 | goto out; | |
2373 | /* Make sure server returned a different fsid for the referral */ | |
2374 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2375 | dprintk("%s: server did not return a different fsid for" |
2376 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2377 | status = -EIO; |
2378 | goto out; | |
2379 | } | |
533eb461 AA |
2380 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2381 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2382 | |
533eb461 | 2383 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2384 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2385 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2386 | out: | |
2387 | if (page) | |
2388 | __free_page(page); | |
5d7ca35a | 2389 | kfree(locations); |
6b97fd3d MN |
2390 | return status; |
2391 | } | |
2392 | ||
1da177e4 LT |
2393 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2394 | { | |
2395 | struct nfs4_getattr_arg args = { | |
2396 | .fh = fhandle, | |
2397 | .bitmask = server->attr_bitmask, | |
2398 | }; | |
2399 | struct nfs4_getattr_res res = { | |
2400 | .fattr = fattr, | |
2401 | .server = server, | |
2402 | }; | |
2403 | struct rpc_message msg = { | |
2404 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2405 | .rpc_argp = &args, | |
2406 | .rpc_resp = &res, | |
2407 | }; | |
2408 | ||
0e574af1 | 2409 | nfs_fattr_init(fattr); |
7c513058 | 2410 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2411 | } |
2412 | ||
2413 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2414 | { | |
2415 | struct nfs4_exception exception = { }; | |
2416 | int err; | |
2417 | do { | |
2418 | err = nfs4_handle_exception(server, | |
2419 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2420 | &exception); | |
2421 | } while (exception.retry); | |
2422 | return err; | |
2423 | } | |
2424 | ||
2425 | /* | |
2426 | * The file is not closed if it is opened due to the a request to change | |
2427 | * the size of the file. The open call will not be needed once the | |
2428 | * VFS layer lookup-intents are implemented. | |
2429 | * | |
2430 | * Close is called when the inode is destroyed. | |
2431 | * If we haven't opened the file for O_WRONLY, we | |
2432 | * need to in the size_change case to obtain a stateid. | |
2433 | * | |
2434 | * Got race? | |
2435 | * Because OPEN is always done by name in nfsv4, it is | |
2436 | * possible that we opened a different file by the same | |
2437 | * name. We can recognize this race condition, but we | |
2438 | * can't do anything about it besides returning an error. | |
2439 | * | |
2440 | * This will be fixed with VFS changes (lookup-intent). | |
2441 | */ | |
2442 | static int | |
2443 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2444 | struct iattr *sattr) | |
2445 | { | |
08e9eac4 | 2446 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2447 | struct rpc_cred *cred = NULL; |
d530838b | 2448 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2449 | int status; |
2450 | ||
8a1636c4 BH |
2451 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2452 | pnfs_return_layout(inode); | |
2453 | ||
0e574af1 | 2454 | nfs_fattr_init(fattr); |
1da177e4 | 2455 | |
d530838b | 2456 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2457 | if (sattr->ia_valid & ATTR_FILE) { |
2458 | struct nfs_open_context *ctx; | |
2459 | ||
2460 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2461 | if (ctx) { |
2462 | cred = ctx->cred; | |
2463 | state = ctx->state; | |
2464 | } | |
659bfcd6 | 2465 | } |
08e9eac4 | 2466 | |
536e43d1 TM |
2467 | /* Deal with open(O_TRUNC) */ |
2468 | if (sattr->ia_valid & ATTR_OPEN) | |
2469 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2470 | ||
659bfcd6 | 2471 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2472 | if (status == 0) |
2473 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2474 | return status; |
2475 | } | |
2476 | ||
0c2e53f1 TM |
2477 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2478 | const struct qstr *name, struct nfs_fh *fhandle, | |
2479 | struct nfs_fattr *fattr) | |
2b3de441 | 2480 | { |
0c2e53f1 | 2481 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2482 | int status; |
2483 | struct nfs4_lookup_arg args = { | |
2484 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2485 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2486 | .name = name, |
2487 | }; | |
2488 | struct nfs4_lookup_res res = { | |
2489 | .server = server, | |
2490 | .fattr = fattr, | |
2491 | .fh = fhandle, | |
2492 | }; | |
2493 | struct rpc_message msg = { | |
2494 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2495 | .rpc_argp = &args, | |
2496 | .rpc_resp = &res, | |
2497 | }; | |
2498 | ||
2499 | nfs_fattr_init(fattr); | |
2500 | ||
1da177e4 | 2501 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2502 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2503 | dprintk("NFS reply lookup: %d\n", status); |
2504 | return status; | |
2505 | } | |
2506 | ||
7ebb9315 BS |
2507 | void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh) |
2508 | { | |
2509 | memset(fh, 0, sizeof(struct nfs_fh)); | |
2510 | fattr->fsid.major = 1; | |
2511 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
2512 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT; | |
2513 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
2514 | fattr->nlink = 2; | |
2515 | } | |
2516 | ||
7c513058 BS |
2517 | static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, |
2518 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1da177e4 LT |
2519 | { |
2520 | struct nfs4_exception exception = { }; | |
2521 | int err; | |
2522 | do { | |
0c2e53f1 TM |
2523 | int status; |
2524 | ||
2525 | status = _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr); | |
2526 | switch (status) { | |
08ef7bd3 TM |
2527 | case -NFS4ERR_BADNAME: |
2528 | return -ENOENT; | |
0c2e53f1 | 2529 | case -NFS4ERR_MOVED: |
a6f498a8 | 2530 | return nfs4_get_referral(dir, name, fattr, fhandle); |
0c2e53f1 | 2531 | case -NFS4ERR_WRONGSEC: |
7ebb9315 | 2532 | nfs_fixup_secinfo_attributes(fattr, fhandle); |
0c2e53f1 TM |
2533 | } |
2534 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2535 | status, &exception); | |
1da177e4 LT |
2536 | } while (exception.retry); |
2537 | return err; | |
2538 | } | |
2539 | ||
2540 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2541 | { | |
76b32999 | 2542 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2543 | struct nfs4_accessargs args = { |
2544 | .fh = NFS_FH(inode), | |
a4980e78 | 2545 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2546 | }; |
2547 | struct nfs4_accessres res = { | |
2548 | .server = server, | |
1da177e4 | 2549 | }; |
1da177e4 LT |
2550 | struct rpc_message msg = { |
2551 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2552 | .rpc_argp = &args, | |
2553 | .rpc_resp = &res, | |
2554 | .rpc_cred = entry->cred, | |
2555 | }; | |
2556 | int mode = entry->mask; | |
2557 | int status; | |
2558 | ||
2559 | /* | |
2560 | * Determine which access bits we want to ask for... | |
2561 | */ | |
2562 | if (mode & MAY_READ) | |
2563 | args.access |= NFS4_ACCESS_READ; | |
2564 | if (S_ISDIR(inode->i_mode)) { | |
2565 | if (mode & MAY_WRITE) | |
2566 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2567 | if (mode & MAY_EXEC) | |
2568 | args.access |= NFS4_ACCESS_LOOKUP; | |
2569 | } else { | |
2570 | if (mode & MAY_WRITE) | |
2571 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2572 | if (mode & MAY_EXEC) | |
2573 | args.access |= NFS4_ACCESS_EXECUTE; | |
2574 | } | |
c407d41a TM |
2575 | |
2576 | res.fattr = nfs_alloc_fattr(); | |
2577 | if (res.fattr == NULL) | |
2578 | return -ENOMEM; | |
2579 | ||
7c513058 | 2580 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2581 | if (!status) { |
2582 | entry->mask = 0; | |
2583 | if (res.access & NFS4_ACCESS_READ) | |
2584 | entry->mask |= MAY_READ; | |
2585 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2586 | entry->mask |= MAY_WRITE; | |
2587 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2588 | entry->mask |= MAY_EXEC; | |
c407d41a | 2589 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2590 | } |
c407d41a | 2591 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2592 | return status; |
2593 | } | |
2594 | ||
2595 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2596 | { | |
2597 | struct nfs4_exception exception = { }; | |
2598 | int err; | |
2599 | do { | |
2600 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2601 | _nfs4_proc_access(inode, entry), | |
2602 | &exception); | |
2603 | } while (exception.retry); | |
2604 | return err; | |
2605 | } | |
2606 | ||
2607 | /* | |
2608 | * TODO: For the time being, we don't try to get any attributes | |
2609 | * along with any of the zero-copy operations READ, READDIR, | |
2610 | * READLINK, WRITE. | |
2611 | * | |
2612 | * In the case of the first three, we want to put the GETATTR | |
2613 | * after the read-type operation -- this is because it is hard | |
2614 | * to predict the length of a GETATTR response in v4, and thus | |
2615 | * align the READ data correctly. This means that the GETATTR | |
2616 | * may end up partially falling into the page cache, and we should | |
2617 | * shift it into the 'tail' of the xdr_buf before processing. | |
2618 | * To do this efficiently, we need to know the total length | |
2619 | * of data received, which doesn't seem to be available outside | |
2620 | * of the RPC layer. | |
2621 | * | |
2622 | * In the case of WRITE, we also want to put the GETATTR after | |
2623 | * the operation -- in this case because we want to make sure | |
2624 | * we get the post-operation mtime and size. This means that | |
2625 | * we can't use xdr_encode_pages() as written: we need a variant | |
2626 | * of it which would leave room in the 'tail' iovec. | |
2627 | * | |
2628 | * Both of these changes to the XDR layer would in fact be quite | |
2629 | * minor, but I decided to leave them for a subsequent patch. | |
2630 | */ | |
2631 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2632 | unsigned int pgbase, unsigned int pglen) | |
2633 | { | |
2634 | struct nfs4_readlink args = { | |
2635 | .fh = NFS_FH(inode), | |
2636 | .pgbase = pgbase, | |
2637 | .pglen = pglen, | |
2638 | .pages = &page, | |
2639 | }; | |
f50c7000 | 2640 | struct nfs4_readlink_res res; |
1da177e4 LT |
2641 | struct rpc_message msg = { |
2642 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2643 | .rpc_argp = &args, | |
f50c7000 | 2644 | .rpc_resp = &res, |
1da177e4 LT |
2645 | }; |
2646 | ||
7c513058 | 2647 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2648 | } |
2649 | ||
2650 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2651 | unsigned int pgbase, unsigned int pglen) | |
2652 | { | |
2653 | struct nfs4_exception exception = { }; | |
2654 | int err; | |
2655 | do { | |
2656 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2657 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2658 | &exception); | |
2659 | } while (exception.retry); | |
2660 | return err; | |
2661 | } | |
2662 | ||
1da177e4 LT |
2663 | /* |
2664 | * Got race? | |
2665 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2666 | * Until then, this create/open method is prone to inefficiency and race | |
2667 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2668 | * placed on the wire. | |
2669 | * | |
2670 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2671 | * The file will be opened again in the subsequent VFS open call | |
2672 | * (nfs4_proc_file_open). | |
2673 | * | |
2674 | * The open for read will just hang around to be used by any process that | |
2675 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2676 | */ | |
2677 | ||
2678 | static int | |
2679 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2680 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2681 | { |
82a2c1b7 | 2682 | struct dentry *de = dentry; |
1da177e4 | 2683 | struct nfs4_state *state; |
c0204fd2 TM |
2684 | struct rpc_cred *cred = NULL; |
2685 | fmode_t fmode = 0; | |
1da177e4 LT |
2686 | int status = 0; |
2687 | ||
c0204fd2 TM |
2688 | if (ctx != NULL) { |
2689 | cred = ctx->cred; | |
3d4ff43d | 2690 | de = ctx->dentry; |
c0204fd2 | 2691 | fmode = ctx->mode; |
1da177e4 | 2692 | } |
a8a5da99 | 2693 | sattr->ia_mode &= ~current_umask(); |
82a2c1b7 | 2694 | state = nfs4_do_open(dir, de, fmode, flags, sattr, cred); |
d4d9cdcb | 2695 | d_drop(dentry); |
1da177e4 LT |
2696 | if (IS_ERR(state)) { |
2697 | status = PTR_ERR(state); | |
c0204fd2 | 2698 | goto out; |
1da177e4 | 2699 | } |
d4d9cdcb | 2700 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2701 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2702 | if (ctx != NULL) |
2703 | ctx->state = state; | |
02a913a7 | 2704 | else |
643168c2 | 2705 | nfs4_close_sync(state, fmode); |
1da177e4 LT |
2706 | out: |
2707 | return status; | |
2708 | } | |
2709 | ||
2710 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2711 | { | |
16e42959 | 2712 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2713 | struct nfs_removeargs args = { |
1da177e4 | 2714 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2715 | .name.len = name->len, |
2716 | .name.name = name->name, | |
16e42959 TM |
2717 | .bitmask = server->attr_bitmask, |
2718 | }; | |
4fdc17b2 | 2719 | struct nfs_removeres res = { |
16e42959 | 2720 | .server = server, |
1da177e4 | 2721 | }; |
1da177e4 | 2722 | struct rpc_message msg = { |
4fdc17b2 TM |
2723 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2724 | .rpc_argp = &args, | |
2725 | .rpc_resp = &res, | |
1da177e4 | 2726 | }; |
d346890b TM |
2727 | int status = -ENOMEM; |
2728 | ||
2729 | res.dir_attr = nfs_alloc_fattr(); | |
2730 | if (res.dir_attr == NULL) | |
2731 | goto out; | |
1da177e4 | 2732 | |
7c513058 | 2733 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
16e42959 TM |
2734 | if (status == 0) { |
2735 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2736 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2737 | } |
d346890b TM |
2738 | nfs_free_fattr(res.dir_attr); |
2739 | out: | |
1da177e4 LT |
2740 | return status; |
2741 | } | |
2742 | ||
2743 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2744 | { | |
2745 | struct nfs4_exception exception = { }; | |
2746 | int err; | |
2747 | do { | |
2748 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2749 | _nfs4_proc_remove(dir, name), | |
2750 | &exception); | |
2751 | } while (exception.retry); | |
2752 | return err; | |
2753 | } | |
2754 | ||
e4eff1a6 | 2755 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2756 | { |
e4eff1a6 TM |
2757 | struct nfs_server *server = NFS_SERVER(dir); |
2758 | struct nfs_removeargs *args = msg->rpc_argp; | |
2759 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2760 | |
a65318bf | 2761 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2762 | res->server = server; |
1da177e4 | 2763 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2764 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2765 | } |
2766 | ||
e4eff1a6 | 2767 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2768 | { |
e4eff1a6 TM |
2769 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2770 | ||
14516c3a TM |
2771 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2772 | return 0; | |
9e33bed5 | 2773 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2774 | return 0; |
2775 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2776 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2777 | return 1; |
1da177e4 LT |
2778 | } |
2779 | ||
d3d4152a JL |
2780 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2781 | { | |
2782 | struct nfs_server *server = NFS_SERVER(dir); | |
2783 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2784 | struct nfs_renameres *res = msg->rpc_resp; | |
2785 | ||
2786 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2787 | arg->bitmask = server->attr_bitmask; | |
2788 | res->server = server; | |
9d12b216 | 2789 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
2790 | } |
2791 | ||
2792 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2793 | struct inode *new_dir) | |
2794 | { | |
2795 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2796 | ||
2797 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2798 | return 0; | |
2799 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2800 | return 0; | |
2801 | ||
2802 | update_changeattr(old_dir, &res->old_cinfo); | |
2803 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2804 | update_changeattr(new_dir, &res->new_cinfo); | |
2805 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2806 | return 1; | |
2807 | } | |
2808 | ||
1da177e4 LT |
2809 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2810 | struct inode *new_dir, struct qstr *new_name) | |
2811 | { | |
6caf2c82 | 2812 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2813 | struct nfs_renameargs arg = { |
1da177e4 LT |
2814 | .old_dir = NFS_FH(old_dir), |
2815 | .new_dir = NFS_FH(new_dir), | |
2816 | .old_name = old_name, | |
2817 | .new_name = new_name, | |
6caf2c82 TM |
2818 | .bitmask = server->attr_bitmask, |
2819 | }; | |
e8582a8b | 2820 | struct nfs_renameres res = { |
6caf2c82 | 2821 | .server = server, |
1da177e4 | 2822 | }; |
1da177e4 LT |
2823 | struct rpc_message msg = { |
2824 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2825 | .rpc_argp = &arg, | |
2826 | .rpc_resp = &res, | |
2827 | }; | |
011fff72 | 2828 | int status = -ENOMEM; |
1da177e4 | 2829 | |
011fff72 TM |
2830 | res.old_fattr = nfs_alloc_fattr(); |
2831 | res.new_fattr = nfs_alloc_fattr(); | |
2832 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2833 | goto out; | |
1da177e4 | 2834 | |
7c513058 | 2835 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2836 | if (!status) { |
2837 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2838 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2839 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2840 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2841 | } |
011fff72 TM |
2842 | out: |
2843 | nfs_free_fattr(res.new_fattr); | |
2844 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2845 | return status; |
2846 | } | |
2847 | ||
2848 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2849 | struct inode *new_dir, struct qstr *new_name) | |
2850 | { | |
2851 | struct nfs4_exception exception = { }; | |
2852 | int err; | |
2853 | do { | |
2854 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2855 | _nfs4_proc_rename(old_dir, old_name, | |
2856 | new_dir, new_name), | |
2857 | &exception); | |
2858 | } while (exception.retry); | |
2859 | return err; | |
2860 | } | |
2861 | ||
2862 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2863 | { | |
91ba2eee | 2864 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2865 | struct nfs4_link_arg arg = { |
2866 | .fh = NFS_FH(inode), | |
2867 | .dir_fh = NFS_FH(dir), | |
2868 | .name = name, | |
91ba2eee TM |
2869 | .bitmask = server->attr_bitmask, |
2870 | }; | |
91ba2eee TM |
2871 | struct nfs4_link_res res = { |
2872 | .server = server, | |
1da177e4 | 2873 | }; |
1da177e4 LT |
2874 | struct rpc_message msg = { |
2875 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2876 | .rpc_argp = &arg, | |
91ba2eee | 2877 | .rpc_resp = &res, |
1da177e4 | 2878 | }; |
136f2627 TM |
2879 | int status = -ENOMEM; |
2880 | ||
2881 | res.fattr = nfs_alloc_fattr(); | |
2882 | res.dir_attr = nfs_alloc_fattr(); | |
2883 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2884 | goto out; | |
1da177e4 | 2885 | |
7c513058 | 2886 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2887 | if (!status) { |
2888 | update_changeattr(dir, &res.cinfo); | |
2889 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2890 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2891 | } |
136f2627 TM |
2892 | out: |
2893 | nfs_free_fattr(res.dir_attr); | |
2894 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2895 | return status; |
2896 | } | |
2897 | ||
2898 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2899 | { | |
2900 | struct nfs4_exception exception = { }; | |
2901 | int err; | |
2902 | do { | |
2903 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2904 | _nfs4_proc_link(inode, dir, name), | |
2905 | &exception); | |
2906 | } while (exception.retry); | |
2907 | return err; | |
2908 | } | |
2909 | ||
57dc9a57 TM |
2910 | struct nfs4_createdata { |
2911 | struct rpc_message msg; | |
2912 | struct nfs4_create_arg arg; | |
2913 | struct nfs4_create_res res; | |
2914 | struct nfs_fh fh; | |
2915 | struct nfs_fattr fattr; | |
2916 | struct nfs_fattr dir_fattr; | |
2917 | }; | |
2918 | ||
2919 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2920 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2921 | { | |
2922 | struct nfs4_createdata *data; | |
2923 | ||
2924 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2925 | if (data != NULL) { | |
2926 | struct nfs_server *server = NFS_SERVER(dir); | |
2927 | ||
2928 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2929 | data->msg.rpc_argp = &data->arg; | |
2930 | data->msg.rpc_resp = &data->res; | |
2931 | data->arg.dir_fh = NFS_FH(dir); | |
2932 | data->arg.server = server; | |
2933 | data->arg.name = name; | |
2934 | data->arg.attrs = sattr; | |
2935 | data->arg.ftype = ftype; | |
2936 | data->arg.bitmask = server->attr_bitmask; | |
2937 | data->res.server = server; | |
2938 | data->res.fh = &data->fh; | |
2939 | data->res.fattr = &data->fattr; | |
2940 | data->res.dir_fattr = &data->dir_fattr; | |
2941 | nfs_fattr_init(data->res.fattr); | |
2942 | nfs_fattr_init(data->res.dir_fattr); | |
2943 | } | |
2944 | return data; | |
2945 | } | |
2946 | ||
2947 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2948 | { | |
7c513058 | 2949 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 2950 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
2951 | if (status == 0) { |
2952 | update_changeattr(dir, &data->res.dir_cinfo); | |
2953 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2954 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2955 | } | |
2956 | return status; | |
2957 | } | |
2958 | ||
2959 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2960 | { | |
2961 | kfree(data); | |
2962 | } | |
2963 | ||
4f390c15 | 2964 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2965 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2966 | { |
57dc9a57 TM |
2967 | struct nfs4_createdata *data; |
2968 | int status = -ENAMETOOLONG; | |
1da177e4 | 2969 | |
94a6d753 | 2970 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2971 | goto out; |
4f390c15 | 2972 | |
57dc9a57 TM |
2973 | status = -ENOMEM; |
2974 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2975 | if (data == NULL) | |
2976 | goto out; | |
2977 | ||
2978 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2979 | data->arg.u.symlink.pages = &page; | |
2980 | data->arg.u.symlink.len = len; | |
1da177e4 | 2981 | |
57dc9a57 TM |
2982 | status = nfs4_do_create(dir, dentry, data); |
2983 | ||
2984 | nfs4_free_createdata(data); | |
2985 | out: | |
1da177e4 LT |
2986 | return status; |
2987 | } | |
2988 | ||
4f390c15 | 2989 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2990 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2991 | { |
2992 | struct nfs4_exception exception = { }; | |
2993 | int err; | |
2994 | do { | |
2995 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2996 | _nfs4_proc_symlink(dir, dentry, page, |
2997 | len, sattr), | |
1da177e4 LT |
2998 | &exception); |
2999 | } while (exception.retry); | |
3000 | return err; | |
3001 | } | |
3002 | ||
3003 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3004 | struct iattr *sattr) | |
3005 | { | |
57dc9a57 TM |
3006 | struct nfs4_createdata *data; |
3007 | int status = -ENOMEM; | |
1da177e4 | 3008 | |
57dc9a57 TM |
3009 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3010 | if (data == NULL) | |
3011 | goto out; | |
3012 | ||
3013 | status = nfs4_do_create(dir, dentry, data); | |
3014 | ||
3015 | nfs4_free_createdata(data); | |
3016 | out: | |
1da177e4 LT |
3017 | return status; |
3018 | } | |
3019 | ||
3020 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3021 | struct iattr *sattr) | |
3022 | { | |
3023 | struct nfs4_exception exception = { }; | |
3024 | int err; | |
a8a5da99 AK |
3025 | |
3026 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3027 | do { |
3028 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3029 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3030 | &exception); | |
3031 | } while (exception.retry); | |
3032 | return err; | |
3033 | } | |
3034 | ||
3035 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3036 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3037 | { |
3038 | struct inode *dir = dentry->d_inode; | |
3039 | struct nfs4_readdir_arg args = { | |
3040 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3041 | .pages = pages, |
1da177e4 LT |
3042 | .pgbase = 0, |
3043 | .count = count, | |
96d25e53 | 3044 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3045 | .plus = plus, |
1da177e4 LT |
3046 | }; |
3047 | struct nfs4_readdir_res res; | |
3048 | struct rpc_message msg = { | |
3049 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3050 | .rpc_argp = &args, | |
3051 | .rpc_resp = &res, | |
3052 | .rpc_cred = cred, | |
3053 | }; | |
3054 | int status; | |
3055 | ||
3110ff80 | 3056 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3057 | dentry->d_parent->d_name.name, |
3058 | dentry->d_name.name, | |
3059 | (unsigned long long)cookie); | |
1da177e4 LT |
3060 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3061 | res.pgbase = args.pgbase; | |
7c513058 | 3062 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3063 | if (status >= 0) { |
1da177e4 | 3064 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3065 | status += args.pgbase; |
3066 | } | |
c4812998 TM |
3067 | |
3068 | nfs_invalidate_atime(dir); | |
3069 | ||
3110ff80 | 3070 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3071 | return status; |
3072 | } | |
3073 | ||
3074 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3075 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3076 | { |
3077 | struct nfs4_exception exception = { }; | |
3078 | int err; | |
3079 | do { | |
3080 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3081 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3082 | pages, count, plus), |
1da177e4 LT |
3083 | &exception); |
3084 | } while (exception.retry); | |
3085 | return err; | |
3086 | } | |
3087 | ||
3088 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3089 | struct iattr *sattr, dev_t rdev) | |
3090 | { | |
57dc9a57 TM |
3091 | struct nfs4_createdata *data; |
3092 | int mode = sattr->ia_mode; | |
3093 | int status = -ENOMEM; | |
1da177e4 LT |
3094 | |
3095 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3096 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3097 | |
3098 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3099 | if (data == NULL) | |
3100 | goto out; | |
3101 | ||
1da177e4 | 3102 | if (S_ISFIFO(mode)) |
57dc9a57 | 3103 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3104 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3105 | data->arg.ftype = NF4BLK; |
3106 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3107 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3108 | } |
3109 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3110 | data->arg.ftype = NF4CHR; |
3111 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3112 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3113 | } |
1da177e4 | 3114 | |
57dc9a57 TM |
3115 | status = nfs4_do_create(dir, dentry, data); |
3116 | ||
3117 | nfs4_free_createdata(data); | |
3118 | out: | |
1da177e4 LT |
3119 | return status; |
3120 | } | |
3121 | ||
3122 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3123 | struct iattr *sattr, dev_t rdev) | |
3124 | { | |
3125 | struct nfs4_exception exception = { }; | |
3126 | int err; | |
a8a5da99 AK |
3127 | |
3128 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3129 | do { |
3130 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3131 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3132 | &exception); | |
3133 | } while (exception.retry); | |
3134 | return err; | |
3135 | } | |
3136 | ||
3137 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3138 | struct nfs_fsstat *fsstat) | |
3139 | { | |
3140 | struct nfs4_statfs_arg args = { | |
3141 | .fh = fhandle, | |
3142 | .bitmask = server->attr_bitmask, | |
3143 | }; | |
24ad148a BH |
3144 | struct nfs4_statfs_res res = { |
3145 | .fsstat = fsstat, | |
3146 | }; | |
1da177e4 LT |
3147 | struct rpc_message msg = { |
3148 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3149 | .rpc_argp = &args, | |
24ad148a | 3150 | .rpc_resp = &res, |
1da177e4 LT |
3151 | }; |
3152 | ||
0e574af1 | 3153 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3154 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3155 | } |
3156 | ||
3157 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3158 | { | |
3159 | struct nfs4_exception exception = { }; | |
3160 | int err; | |
3161 | do { | |
3162 | err = nfs4_handle_exception(server, | |
3163 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3164 | &exception); | |
3165 | } while (exception.retry); | |
3166 | return err; | |
3167 | } | |
3168 | ||
3169 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3170 | struct nfs_fsinfo *fsinfo) | |
3171 | { | |
3172 | struct nfs4_fsinfo_arg args = { | |
3173 | .fh = fhandle, | |
3174 | .bitmask = server->attr_bitmask, | |
3175 | }; | |
3dda5e43 BH |
3176 | struct nfs4_fsinfo_res res = { |
3177 | .fsinfo = fsinfo, | |
3178 | }; | |
1da177e4 LT |
3179 | struct rpc_message msg = { |
3180 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3181 | .rpc_argp = &args, | |
3dda5e43 | 3182 | .rpc_resp = &res, |
1da177e4 LT |
3183 | }; |
3184 | ||
7c513058 | 3185 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3186 | } |
3187 | ||
3188 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3189 | { | |
3190 | struct nfs4_exception exception = { }; | |
3191 | int err; | |
3192 | ||
3193 | do { | |
3194 | err = nfs4_handle_exception(server, | |
3195 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3196 | &exception); | |
3197 | } while (exception.retry); | |
3198 | return err; | |
3199 | } | |
3200 | ||
3201 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3202 | { | |
0e574af1 | 3203 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3204 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3205 | } | |
3206 | ||
3207 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3208 | struct nfs_pathconf *pathconf) | |
3209 | { | |
3210 | struct nfs4_pathconf_arg args = { | |
3211 | .fh = fhandle, | |
3212 | .bitmask = server->attr_bitmask, | |
3213 | }; | |
d45b2989 BH |
3214 | struct nfs4_pathconf_res res = { |
3215 | .pathconf = pathconf, | |
3216 | }; | |
1da177e4 LT |
3217 | struct rpc_message msg = { |
3218 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3219 | .rpc_argp = &args, | |
d45b2989 | 3220 | .rpc_resp = &res, |
1da177e4 LT |
3221 | }; |
3222 | ||
3223 | /* None of the pathconf attributes are mandatory to implement */ | |
3224 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3225 | memset(pathconf, 0, sizeof(*pathconf)); | |
3226 | return 0; | |
3227 | } | |
3228 | ||
0e574af1 | 3229 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3230 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3231 | } |
3232 | ||
3233 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3234 | struct nfs_pathconf *pathconf) | |
3235 | { | |
3236 | struct nfs4_exception exception = { }; | |
3237 | int err; | |
3238 | ||
3239 | do { | |
3240 | err = nfs4_handle_exception(server, | |
3241 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3242 | &exception); | |
3243 | } while (exception.retry); | |
3244 | return err; | |
3245 | } | |
3246 | ||
d20581aa BH |
3247 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3248 | { | |
3249 | nfs_invalidate_atime(data->inode); | |
3250 | } | |
3251 | ||
cbdabc7f | 3252 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3253 | { |
ec06c096 | 3254 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3255 | |
9e33bed5 | 3256 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3257 | rpc_restart_call_prepare(task); |
ec06c096 | 3258 | return -EAGAIN; |
1da177e4 | 3259 | } |
8850df99 | 3260 | |
d20581aa | 3261 | __nfs4_read_done_cb(data); |
1da177e4 | 3262 | if (task->tk_status > 0) |
ec06c096 TM |
3263 | renew_lease(server, data->timestamp); |
3264 | return 0; | |
1da177e4 LT |
3265 | } |
3266 | ||
cbdabc7f AA |
3267 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3268 | { | |
3269 | ||
3270 | dprintk("--> %s\n", __func__); | |
3271 | ||
3272 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3273 | return -EAGAIN; | |
3274 | ||
d20581aa BH |
3275 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3276 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3277 | } |
3278 | ||
bdc7f021 | 3279 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3280 | { |
1da177e4 | 3281 | data->timestamp = jiffies; |
cbdabc7f | 3282 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3283 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3284 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3285 | } |
3286 | ||
cbdabc7f AA |
3287 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3288 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3289 | { | |
3290 | dprintk("%s Reset task for i/o through\n", __func__); | |
3291 | put_lseg(data->lseg); | |
3292 | data->lseg = NULL; | |
3293 | /* offsets will differ in the dense stripe case */ | |
3294 | data->args.offset = data->mds_offset; | |
3295 | data->ds_clp = NULL; | |
3296 | data->args.fh = NFS_FH(data->inode); | |
3297 | data->read_done_cb = nfs4_read_done_cb; | |
3298 | task->tk_ops = data->mds_ops; | |
3299 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3300 | } | |
3301 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3302 | ||
b029bc9b | 3303 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3304 | { |
1da177e4 LT |
3305 | struct inode *inode = data->inode; |
3306 | ||
9e33bed5 | 3307 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3308 | rpc_restart_call_prepare(task); |
788e7a89 | 3309 | return -EAGAIN; |
1da177e4 | 3310 | } |
4f9838c7 | 3311 | if (task->tk_status >= 0) { |
1da177e4 | 3312 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3313 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3314 | } |
788e7a89 | 3315 | return 0; |
1da177e4 LT |
3316 | } |
3317 | ||
b029bc9b FI |
3318 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3319 | { | |
3320 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3321 | return -EAGAIN; | |
d20581aa BH |
3322 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3323 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3324 | } |
3325 | ||
a69aef14 FI |
3326 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3327 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3328 | { | |
3329 | dprintk("%s Reset task for i/o through\n", __func__); | |
3330 | put_lseg(data->lseg); | |
3331 | data->lseg = NULL; | |
3332 | data->ds_clp = NULL; | |
3333 | data->write_done_cb = nfs4_write_done_cb; | |
3334 | data->args.fh = NFS_FH(data->inode); | |
3335 | data->args.bitmask = data->res.server->cache_consistency_bitmask; | |
3336 | data->args.offset = data->mds_offset; | |
3337 | data->res.fattr = &data->fattr; | |
3338 | task->tk_ops = data->mds_ops; | |
3339 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3340 | } | |
3341 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3342 | ||
bdc7f021 | 3343 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3344 | { |
bdc7f021 TM |
3345 | struct nfs_server *server = NFS_SERVER(data->inode); |
3346 | ||
7ffd1064 FI |
3347 | if (data->lseg) { |
3348 | data->args.bitmask = NULL; | |
3349 | data->res.fattr = NULL; | |
3350 | } else | |
3351 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3352 | if (!data->write_done_cb) |
3353 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3354 | data->res.server = server; |
1da177e4 LT |
3355 | data->timestamp = jiffies; |
3356 | ||
bdc7f021 | 3357 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3358 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3359 | } |
3360 | ||
5f452431 | 3361 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3362 | { |
1da177e4 | 3363 | struct inode *inode = data->inode; |
14516c3a | 3364 | |
9e33bed5 | 3365 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3366 | rpc_restart_call_prepare(task); |
788e7a89 | 3367 | return -EAGAIN; |
1da177e4 | 3368 | } |
9e08a3c5 | 3369 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3370 | return 0; |
1da177e4 LT |
3371 | } |
3372 | ||
5f452431 FI |
3373 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
3374 | { | |
3375 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3376 | return -EAGAIN; | |
3377 | return data->write_done_cb(task, data); | |
3378 | } | |
3379 | ||
bdc7f021 | 3380 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3381 | { |
788e7a89 | 3382 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce FI |
3383 | |
3384 | if (data->lseg) { | |
3385 | data->args.bitmask = NULL; | |
3386 | data->res.fattr = NULL; | |
3387 | } else | |
3388 | data->args.bitmask = server->cache_consistency_bitmask; | |
5f452431 FI |
3389 | if (!data->write_done_cb) |
3390 | data->write_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3391 | data->res.server = server; |
bdc7f021 | 3392 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3393 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3394 | } |
3395 | ||
9bc4e3ca CL |
3396 | struct nfs4_renewdata { |
3397 | struct nfs_client *client; | |
3398 | unsigned long timestamp; | |
3399 | }; | |
3400 | ||
1da177e4 LT |
3401 | /* |
3402 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3403 | * standalone procedure for queueing an asynchronous RENEW. | |
3404 | */ | |
9bc4e3ca | 3405 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3406 | { |
9bc4e3ca CL |
3407 | struct nfs4_renewdata *data = calldata; |
3408 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3409 | |
0851de06 AB |
3410 | if (atomic_read(&clp->cl_count) > 1) |
3411 | nfs4_schedule_state_renewal(clp); | |
3412 | nfs_put_client(clp); | |
9bc4e3ca | 3413 | kfree(data); |
dc96aef9 AB |
3414 | } |
3415 | ||
9bc4e3ca | 3416 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3417 | { |
9bc4e3ca CL |
3418 | struct nfs4_renewdata *data = calldata; |
3419 | struct nfs_client *clp = data->client; | |
3420 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3421 | |
3422 | if (task->tk_status < 0) { | |
95baa25c | 3423 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3424 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3425 | return; | |
3426 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3427 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3428 | return; |
3429 | } | |
3430 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3431 | } |
452e9352 | 3432 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3433 | } |
3434 | ||
963d8fe5 TM |
3435 | static const struct rpc_call_ops nfs4_renew_ops = { |
3436 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3437 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3438 | }; |
3439 | ||
2f60ea6b | 3440 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3441 | { |
3442 | struct rpc_message msg = { | |
3443 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3444 | .rpc_argp = clp, | |
b4454fe1 | 3445 | .rpc_cred = cred, |
1da177e4 | 3446 | }; |
9bc4e3ca | 3447 | struct nfs4_renewdata *data; |
1da177e4 | 3448 | |
2f60ea6b TM |
3449 | if (renew_flags == 0) |
3450 | return 0; | |
0851de06 AB |
3451 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3452 | return -EIO; | |
b569ad34 | 3453 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3454 | if (data == NULL) |
3455 | return -ENOMEM; | |
3456 | data->client = clp; | |
3457 | data->timestamp = jiffies; | |
1da177e4 | 3458 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3459 | &nfs4_renew_ops, data); |
1da177e4 LT |
3460 | } |
3461 | ||
8534d4ec | 3462 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3463 | { |
3464 | struct rpc_message msg = { | |
3465 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3466 | .rpc_argp = clp, | |
b4454fe1 | 3467 | .rpc_cred = cred, |
1da177e4 LT |
3468 | }; |
3469 | unsigned long now = jiffies; | |
3470 | int status; | |
3471 | ||
3472 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3473 | if (status < 0) | |
3474 | return status; | |
452e9352 | 3475 | do_renew_lease(clp, now); |
1da177e4 LT |
3476 | return 0; |
3477 | } | |
3478 | ||
aa1870af BF |
3479 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3480 | { | |
3481 | return (server->caps & NFS_CAP_ACLS) | |
3482 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3483 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3484 | } | |
3485 | ||
3486 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3487 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3488 | * the stack. | |
3489 | */ | |
3490 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3491 | ||
e9e3d724 NH |
3492 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3493 | struct page **pages, unsigned int *pgbase) | |
3494 | { | |
3495 | struct page *newpage, **spages; | |
3496 | int rc = 0; | |
3497 | size_t len; | |
3498 | spages = pages; | |
3499 | ||
3500 | do { | |
43b7c3f0 | 3501 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3502 | newpage = alloc_page(GFP_KERNEL); |
3503 | ||
3504 | if (newpage == NULL) | |
3505 | goto unwind; | |
3506 | memcpy(page_address(newpage), buf, len); | |
3507 | buf += len; | |
3508 | buflen -= len; | |
3509 | *pages++ = newpage; | |
3510 | rc++; | |
3511 | } while (buflen != 0); | |
3512 | ||
3513 | return rc; | |
3514 | ||
3515 | unwind: | |
3516 | for(; rc > 0; rc--) | |
3517 | __free_page(spages[rc-1]); | |
3518 | return -ENOMEM; | |
3519 | } | |
3520 | ||
e50a1c2e BF |
3521 | struct nfs4_cached_acl { |
3522 | int cached; | |
3523 | size_t len; | |
3e9d4154 | 3524 | char data[0]; |
e50a1c2e BF |
3525 | }; |
3526 | ||
3527 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3528 | { | |
3529 | struct nfs_inode *nfsi = NFS_I(inode); | |
3530 | ||
3531 | spin_lock(&inode->i_lock); | |
3532 | kfree(nfsi->nfs4_acl); | |
3533 | nfsi->nfs4_acl = acl; | |
3534 | spin_unlock(&inode->i_lock); | |
3535 | } | |
3536 | ||
3537 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3538 | { | |
3539 | nfs4_set_cached_acl(inode, NULL); | |
3540 | } | |
3541 | ||
3542 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3543 | { | |
3544 | struct nfs_inode *nfsi = NFS_I(inode); | |
3545 | struct nfs4_cached_acl *acl; | |
3546 | int ret = -ENOENT; | |
3547 | ||
3548 | spin_lock(&inode->i_lock); | |
3549 | acl = nfsi->nfs4_acl; | |
3550 | if (acl == NULL) | |
3551 | goto out; | |
3552 | if (buf == NULL) /* user is just asking for length */ | |
3553 | goto out_len; | |
3554 | if (acl->cached == 0) | |
3555 | goto out; | |
3556 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3557 | if (acl->len > buflen) | |
3558 | goto out; | |
3559 | memcpy(buf, acl->data, acl->len); | |
3560 | out_len: | |
3561 | ret = acl->len; | |
3562 | out: | |
3563 | spin_unlock(&inode->i_lock); | |
3564 | return ret; | |
3565 | } | |
3566 | ||
3567 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3568 | { | |
3569 | struct nfs4_cached_acl *acl; | |
3570 | ||
3571 | if (buf && acl_len <= PAGE_SIZE) { | |
3572 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3573 | if (acl == NULL) | |
3574 | goto out; | |
3575 | acl->cached = 1; | |
3576 | memcpy(acl->data, buf, acl_len); | |
3577 | } else { | |
3578 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3579 | if (acl == NULL) | |
3580 | goto out; | |
3581 | acl->cached = 0; | |
3582 | } | |
3583 | acl->len = acl_len; | |
3584 | out: | |
3585 | nfs4_set_cached_acl(inode, acl); | |
3586 | } | |
3587 | ||
bf118a34 AA |
3588 | /* |
3589 | * The getxattr API returns the required buffer length when called with a | |
3590 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3591 | * the required buf. On a NULL buf, we send a page of data to the server | |
3592 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3593 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3594 | * the cache. If not so, we throw away the page, and cache the required | |
3595 | * length. The next getxattr call will then produce another round trip to | |
3596 | * the server, this time with the input buf of the required size. | |
3597 | */ | |
16b4289c | 3598 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3599 | { |
bf118a34 | 3600 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3601 | struct nfs_getaclargs args = { |
3602 | .fh = NFS_FH(inode), | |
3603 | .acl_pages = pages, | |
3604 | .acl_len = buflen, | |
3605 | }; | |
663c79b3 BH |
3606 | struct nfs_getaclres res = { |
3607 | .acl_len = buflen, | |
3608 | }; | |
e50a1c2e | 3609 | void *resp_buf; |
aa1870af BF |
3610 | struct rpc_message msg = { |
3611 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3612 | .rpc_argp = &args, | |
663c79b3 | 3613 | .rpc_resp = &res, |
aa1870af | 3614 | }; |
bf118a34 | 3615 | int ret = -ENOMEM, npages, i, acl_len = 0; |
aa1870af | 3616 | |
bf118a34 AA |
3617 | npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; |
3618 | /* As long as we're doing a round trip to the server anyway, | |
3619 | * let's be prepared for a page of acl data. */ | |
3620 | if (npages == 0) | |
3621 | npages = 1; | |
3622 | ||
3623 | for (i = 0; i < npages; i++) { | |
3624 | pages[i] = alloc_page(GFP_KERNEL); | |
3625 | if (!pages[i]) | |
3626 | goto out_free; | |
e50a1c2e | 3627 | } |
bf118a34 AA |
3628 | if (npages > 1) { |
3629 | /* for decoding across pages */ | |
331818f1 TM |
3630 | res.acl_scratch = alloc_page(GFP_KERNEL); |
3631 | if (!res.acl_scratch) | |
bf118a34 | 3632 | goto out_free; |
e50a1c2e | 3633 | } |
bf118a34 AA |
3634 | args.acl_len = npages * PAGE_SIZE; |
3635 | args.acl_pgbase = 0; | |
3636 | /* Let decode_getfacl know not to fail if the ACL data is larger than | |
3637 | * the page we send as a guess */ | |
3638 | if (buf == NULL) | |
3639 | res.acl_flags |= NFS4_ACL_LEN_REQUEST; | |
3640 | resp_buf = page_address(pages[0]); | |
3641 | ||
de040bec | 3642 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3643 | __func__, buf, buflen, npages, args.acl_len); |
3644 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3645 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3646 | if (ret) |
3647 | goto out_free; | |
bf118a34 AA |
3648 | |
3649 | acl_len = res.acl_len - res.acl_data_offset; | |
3650 | if (acl_len > args.acl_len) | |
3651 | nfs4_write_cached_acl(inode, NULL, acl_len); | |
e50a1c2e | 3652 | else |
bf118a34 AA |
3653 | nfs4_write_cached_acl(inode, resp_buf + res.acl_data_offset, |
3654 | acl_len); | |
e50a1c2e BF |
3655 | if (buf) { |
3656 | ret = -ERANGE; | |
bf118a34 | 3657 | if (acl_len > buflen) |
e50a1c2e | 3658 | goto out_free; |
bf118a34 AA |
3659 | _copy_from_pages(buf, pages, res.acl_data_offset, |
3660 | res.acl_len); | |
e50a1c2e | 3661 | } |
bf118a34 | 3662 | ret = acl_len; |
e50a1c2e | 3663 | out_free: |
bf118a34 AA |
3664 | for (i = 0; i < npages; i++) |
3665 | if (pages[i]) | |
3666 | __free_page(pages[i]); | |
331818f1 TM |
3667 | if (res.acl_scratch) |
3668 | __free_page(res.acl_scratch); | |
aa1870af BF |
3669 | return ret; |
3670 | } | |
3671 | ||
16b4289c TM |
3672 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3673 | { | |
3674 | struct nfs4_exception exception = { }; | |
3675 | ssize_t ret; | |
3676 | do { | |
3677 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3678 | if (ret >= 0) | |
3679 | break; | |
3680 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3681 | } while (exception.retry); | |
3682 | return ret; | |
3683 | } | |
3684 | ||
e50a1c2e BF |
3685 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3686 | { | |
3687 | struct nfs_server *server = NFS_SERVER(inode); | |
3688 | int ret; | |
3689 | ||
3690 | if (!nfs4_server_supports_acls(server)) | |
3691 | return -EOPNOTSUPP; | |
3692 | ret = nfs_revalidate_inode(server, inode); | |
3693 | if (ret < 0) | |
3694 | return ret; | |
08a22b39 AK |
3695 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3696 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3697 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3698 | if (ret != -ENOENT) | |
bf118a34 AA |
3699 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3700 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3701 | return ret; |
3702 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3703 | } | |
3704 | ||
16b4289c | 3705 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3706 | { |
3707 | struct nfs_server *server = NFS_SERVER(inode); | |
3708 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3709 | struct nfs_setaclargs arg = { | |
3710 | .fh = NFS_FH(inode), | |
3711 | .acl_pages = pages, | |
3712 | .acl_len = buflen, | |
3713 | }; | |
73c403a9 | 3714 | struct nfs_setaclres res; |
4b580ee3 BF |
3715 | struct rpc_message msg = { |
3716 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3717 | .rpc_argp = &arg, | |
73c403a9 | 3718 | .rpc_resp = &res, |
4b580ee3 | 3719 | }; |
e9e3d724 | 3720 | int ret, i; |
4b580ee3 BF |
3721 | |
3722 | if (!nfs4_server_supports_acls(server)) | |
3723 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3724 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3725 | if (i < 0) | |
3726 | return i; | |
642ac549 | 3727 | nfs_inode_return_delegation(inode); |
7c513058 | 3728 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3729 | |
3730 | /* | |
3731 | * Free each page after tx, so the only ref left is | |
3732 | * held by the network stack | |
3733 | */ | |
3734 | for (; i > 0; i--) | |
3735 | put_page(pages[i-1]); | |
3736 | ||
08a22b39 AK |
3737 | /* |
3738 | * Acl update can result in inode attribute update. | |
3739 | * so mark the attribute cache invalid. | |
3740 | */ | |
3741 | spin_lock(&inode->i_lock); | |
3742 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3743 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3744 | nfs_access_zap_cache(inode); |
3745 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3746 | return ret; |
3747 | } | |
3748 | ||
16b4289c TM |
3749 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3750 | { | |
3751 | struct nfs4_exception exception = { }; | |
3752 | int err; | |
3753 | do { | |
3754 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3755 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3756 | &exception); | |
3757 | } while (exception.retry); | |
3758 | return err; | |
3759 | } | |
3760 | ||
1da177e4 | 3761 | static int |
aa5190d0 | 3762 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3763 | { |
aa5190d0 TM |
3764 | struct nfs_client *clp = server->nfs_client; |
3765 | ||
3766 | if (task->tk_status >= 0) | |
1da177e4 LT |
3767 | return 0; |
3768 | switch(task->tk_status) { | |
a1d0b5ee | 3769 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3770 | case -NFS4ERR_ADMIN_REVOKED: |
3771 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
3772 | if (state != NULL) |
3773 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3774 | case -NFS4ERR_OPENMODE: |
3775 | if (state == NULL) | |
3776 | break; | |
0400a6b0 TM |
3777 | nfs4_schedule_stateid_recovery(server, state); |
3778 | goto wait_on_recovery; | |
0ced63d1 TM |
3779 | case -NFS4ERR_EXPIRED: |
3780 | if (state != NULL) | |
3781 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3782 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3783 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3784 | nfs4_schedule_lease_recovery(clp); |
3785 | goto wait_on_recovery; | |
4745e315 AA |
3786 | #if defined(CONFIG_NFS_V4_1) |
3787 | case -NFS4ERR_BADSESSION: | |
3788 | case -NFS4ERR_BADSLOT: | |
3789 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3790 | case -NFS4ERR_DEADSESSION: | |
3791 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3792 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3793 | case -NFS4ERR_SEQ_MISORDERED: | |
3794 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3795 | task->tk_status); | |
0400a6b0 | 3796 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3797 | task->tk_status = 0; |
3798 | return -EAGAIN; | |
3799 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3800 | case -NFS4ERR_DELAY: |
aa5190d0 | 3801 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3802 | case -NFS4ERR_GRACE: |
2c643488 | 3803 | case -EKEYEXPIRED: |
1da177e4 LT |
3804 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3805 | task->tk_status = 0; | |
3806 | return -EAGAIN; | |
a8a4ae3a | 3807 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3808 | case -NFS4ERR_OLD_STATEID: |
3809 | task->tk_status = 0; | |
3810 | return -EAGAIN; | |
3811 | } | |
3812 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3813 | return 0; | |
0400a6b0 | 3814 | wait_on_recovery: |
a2c0b9e2 | 3815 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3816 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3817 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3818 | task->tk_status = 0; | |
3819 | return -EAGAIN; | |
1da177e4 LT |
3820 | } |
3821 | ||
bb8b27e5 TM |
3822 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3823 | unsigned short port, struct rpc_cred *cred, | |
3824 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3825 | { |
3826 | nfs4_verifier sc_verifier; | |
3827 | struct nfs4_setclientid setclientid = { | |
3828 | .sc_verifier = &sc_verifier, | |
3829 | .sc_prog = program, | |
f4eecd5d | 3830 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3831 | }; |
3832 | struct rpc_message msg = { | |
3833 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3834 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3835 | .rpc_resp = res, |
286d7d6a | 3836 | .rpc_cred = cred, |
1da177e4 | 3837 | }; |
bc4785cd | 3838 | __be32 *p; |
1da177e4 LT |
3839 | int loop = 0; |
3840 | int status; | |
3841 | ||
bc4785cd | 3842 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3843 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3844 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3845 | ||
3846 | for(;;) { | |
2446ab60 | 3847 | rcu_read_lock(); |
1da177e4 | 3848 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, |
69dd716c | 3849 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3850 | clp->cl_ipaddr, |
3851 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3852 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3853 | rpc_peeraddr2str(clp->cl_rpcclient, |
3854 | RPC_DISPLAY_PROTO), | |
78ea323b | 3855 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3856 | clp->cl_id_uniquifier); |
3857 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3858 | sizeof(setclientid.sc_netid), |
3859 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3860 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3861 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3862 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 | 3863 | clp->cl_ipaddr, port >> 8, port & 255); |
2446ab60 | 3864 | rcu_read_unlock(); |
1da177e4 | 3865 | |
1bd714f2 | 3866 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3867 | if (status != -NFS4ERR_CLID_INUSE) |
3868 | break; | |
fd954ae1 TM |
3869 | if (loop != 0) { |
3870 | ++clp->cl_id_uniquifier; | |
1da177e4 | 3871 | break; |
fd954ae1 TM |
3872 | } |
3873 | ++loop; | |
3874 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
3875 | } |
3876 | return status; | |
3877 | } | |
3878 | ||
fd954ae1 | 3879 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
3880 | struct nfs4_setclientid_res *arg, |
3881 | struct rpc_cred *cred) | |
1da177e4 LT |
3882 | { |
3883 | struct nfs_fsinfo fsinfo; | |
3884 | struct rpc_message msg = { | |
3885 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3886 | .rpc_argp = arg, |
1da177e4 | 3887 | .rpc_resp = &fsinfo, |
286d7d6a | 3888 | .rpc_cred = cred, |
1da177e4 LT |
3889 | }; |
3890 | unsigned long now; | |
3891 | int status; | |
3892 | ||
3893 | now = jiffies; | |
1bd714f2 | 3894 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3895 | if (status == 0) { |
3896 | spin_lock(&clp->cl_lock); | |
3897 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3898 | clp->cl_last_renewal = now; | |
3899 | spin_unlock(&clp->cl_lock); | |
3900 | } | |
3901 | return status; | |
3902 | } | |
3903 | ||
fe650407 TM |
3904 | struct nfs4_delegreturndata { |
3905 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3906 | struct nfs4_delegreturnres res; |
fe650407 TM |
3907 | struct nfs_fh fh; |
3908 | nfs4_stateid stateid; | |
26e976a8 | 3909 | unsigned long timestamp; |
fa178f29 | 3910 | struct nfs_fattr fattr; |
fe650407 TM |
3911 | int rpc_status; |
3912 | }; | |
3913 | ||
fe650407 TM |
3914 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3915 | { | |
3916 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3917 | |
14516c3a TM |
3918 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3919 | return; | |
938e1010 | 3920 | |
79708861 RL |
3921 | switch (task->tk_status) { |
3922 | case -NFS4ERR_STALE_STATEID: | |
3923 | case -NFS4ERR_EXPIRED: | |
3924 | case 0: | |
fa178f29 | 3925 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3926 | break; |
3927 | default: | |
3928 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3929 | -EAGAIN) { | |
d00c5d43 | 3930 | rpc_restart_call_prepare(task); |
79708861 RL |
3931 | return; |
3932 | } | |
3933 | } | |
3934 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3935 | } |
3936 | ||
3937 | static void nfs4_delegreturn_release(void *calldata) | |
3938 | { | |
fe650407 TM |
3939 | kfree(calldata); |
3940 | } | |
3941 | ||
938e1010 AA |
3942 | #if defined(CONFIG_NFS_V4_1) |
3943 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3944 | { | |
3945 | struct nfs4_delegreturndata *d_data; | |
3946 | ||
3947 | d_data = (struct nfs4_delegreturndata *)data; | |
3948 | ||
035168ab | 3949 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 3950 | &d_data->args.seq_args, |
9d12b216 | 3951 | &d_data->res.seq_res, task)) |
938e1010 AA |
3952 | return; |
3953 | rpc_call_start(task); | |
3954 | } | |
3955 | #endif /* CONFIG_NFS_V4_1 */ | |
3956 | ||
c8d149f3 | 3957 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3958 | #if defined(CONFIG_NFS_V4_1) |
3959 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3960 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3961 | .rpc_call_done = nfs4_delegreturn_done, |
3962 | .rpc_release = nfs4_delegreturn_release, | |
3963 | }; | |
3964 | ||
e6f81075 | 3965 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3966 | { |
3967 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3968 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3969 | struct rpc_task *task; |
5138fde0 TM |
3970 | struct rpc_message msg = { |
3971 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3972 | .rpc_cred = cred, | |
3973 | }; | |
c970aa85 TM |
3974 | struct rpc_task_setup task_setup_data = { |
3975 | .rpc_client = server->client, | |
5138fde0 | 3976 | .rpc_message = &msg, |
c970aa85 TM |
3977 | .callback_ops = &nfs4_delegreturn_ops, |
3978 | .flags = RPC_TASK_ASYNC, | |
3979 | }; | |
e6f81075 | 3980 | int status = 0; |
fe650407 | 3981 | |
8535b2be | 3982 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3983 | if (data == NULL) |
3984 | return -ENOMEM; | |
9d12b216 | 3985 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
3986 | data->args.fhandle = &data->fh; |
3987 | data->args.stateid = &data->stateid; | |
fa178f29 | 3988 | data->args.bitmask = server->attr_bitmask; |
fe650407 | 3989 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 3990 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
3991 | data->res.fattr = &data->fattr; |
3992 | data->res.server = server; | |
5138fde0 | 3993 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3994 | data->timestamp = jiffies; |
fe650407 TM |
3995 | data->rpc_status = 0; |
3996 | ||
c970aa85 | 3997 | task_setup_data.callback_data = data; |
1174dd1f TM |
3998 | msg.rpc_argp = &data->args; |
3999 | msg.rpc_resp = &data->res; | |
c970aa85 | 4000 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4001 | if (IS_ERR(task)) |
fe650407 | 4002 | return PTR_ERR(task); |
e6f81075 TM |
4003 | if (!issync) |
4004 | goto out; | |
fe650407 | 4005 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4006 | if (status != 0) |
4007 | goto out; | |
4008 | status = data->rpc_status; | |
4009 | if (status != 0) | |
4010 | goto out; | |
4011 | nfs_refresh_inode(inode, &data->fattr); | |
4012 | out: | |
e6b3c4db | 4013 | rpc_put_task(task); |
fe650407 | 4014 | return status; |
1da177e4 LT |
4015 | } |
4016 | ||
e6f81075 | 4017 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4018 | { |
4019 | struct nfs_server *server = NFS_SERVER(inode); | |
4020 | struct nfs4_exception exception = { }; | |
4021 | int err; | |
4022 | do { | |
e6f81075 | 4023 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4024 | switch (err) { |
4025 | case -NFS4ERR_STALE_STATEID: | |
4026 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4027 | case 0: |
4028 | return 0; | |
4029 | } | |
4030 | err = nfs4_handle_exception(server, err, &exception); | |
4031 | } while (exception.retry); | |
4032 | return err; | |
4033 | } | |
4034 | ||
4035 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4036 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4037 | ||
4038 | /* | |
4039 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4040 | */ | |
4041 | static unsigned long | |
4042 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4043 | { | |
d310310c | 4044 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4045 | timeout <<= 1; |
4046 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4047 | return NFS4_LOCK_MAXTIMEOUT; | |
4048 | return timeout; | |
4049 | } | |
4050 | ||
1da177e4 LT |
4051 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4052 | { | |
4053 | struct inode *inode = state->inode; | |
4054 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4055 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4056 | struct nfs_lockt_args arg = { |
1da177e4 | 4057 | .fh = NFS_FH(inode), |
911d1aaf | 4058 | .fl = request, |
1da177e4 | 4059 | }; |
911d1aaf TM |
4060 | struct nfs_lockt_res res = { |
4061 | .denied = request, | |
1da177e4 LT |
4062 | }; |
4063 | struct rpc_message msg = { | |
4064 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4065 | .rpc_argp = &arg, | |
4066 | .rpc_resp = &res, | |
4067 | .rpc_cred = state->owner->so_cred, | |
4068 | }; | |
1da177e4 LT |
4069 | struct nfs4_lock_state *lsp; |
4070 | int status; | |
4071 | ||
911d1aaf | 4072 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4073 | status = nfs4_set_lock_state(state, request); |
4074 | if (status != 0) | |
4075 | goto out; | |
4076 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4077 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4078 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4079 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4080 | switch (status) { |
4081 | case 0: | |
4082 | request->fl_type = F_UNLCK; | |
4083 | break; | |
4084 | case -NFS4ERR_DENIED: | |
4085 | status = 0; | |
1da177e4 | 4086 | } |
70cc6487 | 4087 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4088 | out: |
1da177e4 LT |
4089 | return status; |
4090 | } | |
4091 | ||
4092 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4093 | { | |
4094 | struct nfs4_exception exception = { }; | |
4095 | int err; | |
4096 | ||
4097 | do { | |
4098 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4099 | _nfs4_proc_getlk(state, cmd, request), | |
4100 | &exception); | |
4101 | } while (exception.retry); | |
4102 | return err; | |
4103 | } | |
4104 | ||
4105 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4106 | { | |
4107 | int res = 0; | |
4108 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4109 | case FL_POSIX: | |
4110 | res = posix_lock_file_wait(file, fl); | |
4111 | break; | |
4112 | case FL_FLOCK: | |
4113 | res = flock_lock_file_wait(file, fl); | |
4114 | break; | |
4115 | default: | |
4116 | BUG(); | |
4117 | } | |
1da177e4 LT |
4118 | return res; |
4119 | } | |
4120 | ||
faf5f49c | 4121 | struct nfs4_unlockdata { |
911d1aaf TM |
4122 | struct nfs_locku_args arg; |
4123 | struct nfs_locku_res res; | |
faf5f49c TM |
4124 | struct nfs4_lock_state *lsp; |
4125 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4126 | struct file_lock fl; |
4127 | const struct nfs_server *server; | |
26e976a8 | 4128 | unsigned long timestamp; |
faf5f49c TM |
4129 | }; |
4130 | ||
911d1aaf TM |
4131 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4132 | struct nfs_open_context *ctx, | |
4133 | struct nfs4_lock_state *lsp, | |
4134 | struct nfs_seqid *seqid) | |
4135 | { | |
4136 | struct nfs4_unlockdata *p; | |
4137 | struct inode *inode = lsp->ls_state->inode; | |
4138 | ||
8535b2be | 4139 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4140 | if (p == NULL) |
4141 | return NULL; | |
4142 | p->arg.fh = NFS_FH(inode); | |
4143 | p->arg.fl = &p->fl; | |
4144 | p->arg.seqid = seqid; | |
c1d51931 | 4145 | p->res.seqid = seqid; |
911d1aaf TM |
4146 | p->arg.stateid = &lsp->ls_stateid; |
4147 | p->lsp = lsp; | |
4148 | atomic_inc(&lsp->ls_count); | |
4149 | /* Ensure we don't close file until we're done freeing locks! */ | |
4150 | p->ctx = get_nfs_open_context(ctx); | |
4151 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4152 | p->server = NFS_SERVER(inode); | |
4153 | return p; | |
4154 | } | |
4155 | ||
06f814a3 | 4156 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4157 | { |
963d8fe5 | 4158 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4159 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4160 | nfs4_put_lock_state(calldata->lsp); |
4161 | put_nfs_open_context(calldata->ctx); | |
4162 | kfree(calldata); | |
faf5f49c TM |
4163 | } |
4164 | ||
963d8fe5 | 4165 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4166 | { |
963d8fe5 | 4167 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4168 | |
14516c3a TM |
4169 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4170 | return; | |
faf5f49c TM |
4171 | switch (task->tk_status) { |
4172 | case 0: | |
f597c537 TM |
4173 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4174 | &calldata->res.stateid); | |
26e976a8 | 4175 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4176 | break; |
9e33bed5 TM |
4177 | case -NFS4ERR_BAD_STATEID: |
4178 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4179 | case -NFS4ERR_STALE_STATEID: |
4180 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4181 | break; |
4182 | default: | |
9e33bed5 | 4183 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4184 | rpc_restart_call_prepare(task); |
faf5f49c | 4185 | } |
faf5f49c TM |
4186 | } |
4187 | ||
4ce70ada | 4188 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4189 | { |
4ce70ada | 4190 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4191 | |
911d1aaf | 4192 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4193 | return; |
4194 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4195 | /* Note: exit _without_ running nfs4_locku_done */ |
4196 | task->tk_action = NULL; | |
faf5f49c TM |
4197 | return; |
4198 | } | |
26e976a8 | 4199 | calldata->timestamp = jiffies; |
035168ab | 4200 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4201 | &calldata->arg.seq_args, |
9d12b216 | 4202 | &calldata->res.seq_res, task)) |
a893693c | 4203 | return; |
5138fde0 | 4204 | rpc_call_start(task); |
faf5f49c TM |
4205 | } |
4206 | ||
963d8fe5 | 4207 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4208 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4209 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4210 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4211 | }; |
4212 | ||
a5d16a4d TM |
4213 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4214 | struct nfs_open_context *ctx, | |
4215 | struct nfs4_lock_state *lsp, | |
4216 | struct nfs_seqid *seqid) | |
4217 | { | |
4218 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4219 | struct rpc_message msg = { |
4220 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4221 | .rpc_cred = ctx->cred, | |
4222 | }; | |
c970aa85 TM |
4223 | struct rpc_task_setup task_setup_data = { |
4224 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4225 | .rpc_message = &msg, |
c970aa85 | 4226 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4227 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4228 | .flags = RPC_TASK_ASYNC, |
4229 | }; | |
a5d16a4d | 4230 | |
137d6aca FF |
4231 | /* Ensure this is an unlock - when canceling a lock, the |
4232 | * canceled lock is passed in, and it won't be an unlock. | |
4233 | */ | |
4234 | fl->fl_type = F_UNLCK; | |
4235 | ||
a5d16a4d TM |
4236 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4237 | if (data == NULL) { | |
4238 | nfs_free_seqid(seqid); | |
4239 | return ERR_PTR(-ENOMEM); | |
4240 | } | |
4241 | ||
9d12b216 | 4242 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4243 | msg.rpc_argp = &data->arg; |
4244 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4245 | task_setup_data.callback_data = data; |
4246 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4247 | } |
4248 | ||
faf5f49c TM |
4249 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4250 | { | |
19e03c57 | 4251 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4252 | struct nfs_seqid *seqid; |
1da177e4 | 4253 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4254 | struct rpc_task *task; |
4255 | int status = 0; | |
536ff0f8 | 4256 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4257 | |
8d0a8a9d | 4258 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4259 | /* Unlock _before_ we do the RPC call */ |
4260 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4261 | down_read(&nfsi->rwsem); |
4262 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4263 | up_read(&nfsi->rwsem); | |
9b073574 | 4264 | goto out; |
19e03c57 TM |
4265 | } |
4266 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4267 | if (status != 0) |
9b073574 TM |
4268 | goto out; |
4269 | /* Is this a delegated lock? */ | |
4270 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4271 | goto out; | |
8d0a8a9d | 4272 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4273 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4274 | status = -ENOMEM; |
911d1aaf | 4275 | if (seqid == NULL) |
9b073574 | 4276 | goto out; |
cd3758e3 | 4277 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4278 | status = PTR_ERR(task); |
4279 | if (IS_ERR(task)) | |
9b073574 | 4280 | goto out; |
a5d16a4d | 4281 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4282 | rpc_put_task(task); |
9b073574 | 4283 | out: |
536ff0f8 | 4284 | request->fl_flags = fl_flags; |
1da177e4 LT |
4285 | return status; |
4286 | } | |
4287 | ||
a5d16a4d TM |
4288 | struct nfs4_lockdata { |
4289 | struct nfs_lock_args arg; | |
4290 | struct nfs_lock_res res; | |
4291 | struct nfs4_lock_state *lsp; | |
4292 | struct nfs_open_context *ctx; | |
4293 | struct file_lock fl; | |
26e976a8 | 4294 | unsigned long timestamp; |
a5d16a4d TM |
4295 | int rpc_status; |
4296 | int cancelled; | |
66179efe | 4297 | struct nfs_server *server; |
a5d16a4d TM |
4298 | }; |
4299 | ||
4300 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4301 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4302 | gfp_t gfp_mask) | |
1da177e4 | 4303 | { |
a5d16a4d TM |
4304 | struct nfs4_lockdata *p; |
4305 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4306 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4307 | |
8535b2be | 4308 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4309 | if (p == NULL) |
4310 | return NULL; | |
4311 | ||
4312 | p->arg.fh = NFS_FH(inode); | |
4313 | p->arg.fl = &p->fl; | |
8535b2be | 4314 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4315 | if (p->arg.open_seqid == NULL) |
4316 | goto out_free; | |
8535b2be | 4317 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4318 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4319 | goto out_free_seqid; |
a5d16a4d | 4320 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4321 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4322 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4323 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4324 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4325 | p->lsp = lsp; |
66179efe | 4326 | p->server = server; |
a5d16a4d TM |
4327 | atomic_inc(&lsp->ls_count); |
4328 | p->ctx = get_nfs_open_context(ctx); | |
4329 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4330 | return p; | |
2f74c0a0 TM |
4331 | out_free_seqid: |
4332 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4333 | out_free: |
4334 | kfree(p); | |
4335 | return NULL; | |
4336 | } | |
4337 | ||
4338 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4339 | { | |
4340 | struct nfs4_lockdata *data = calldata; | |
4341 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4342 | |
3110ff80 | 4343 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4344 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4345 | return; | |
a5d16a4d TM |
4346 | /* Do we need to do an open_to_lock_owner? */ |
4347 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4348 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4349 | return; | |
a5d16a4d TM |
4350 | data->arg.open_stateid = &state->stateid; |
4351 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4352 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4353 | } else |
4354 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4355 | data->timestamp = jiffies; |
035168ab TM |
4356 | if (nfs4_setup_sequence(data->server, |
4357 | &data->arg.seq_args, | |
9d12b216 | 4358 | &data->res.seq_res, task)) |
66179efe | 4359 | return; |
5138fde0 | 4360 | rpc_call_start(task); |
3110ff80 | 4361 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4362 | } |
4363 | ||
b257957e AB |
4364 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4365 | { | |
4366 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4367 | nfs4_lock_prepare(task, calldata); | |
4368 | } | |
4369 | ||
a5d16a4d TM |
4370 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4371 | { | |
4372 | struct nfs4_lockdata *data = calldata; | |
4373 | ||
3110ff80 | 4374 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4375 | |
14516c3a TM |
4376 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4377 | return; | |
66179efe | 4378 | |
a5d16a4d | 4379 | data->rpc_status = task->tk_status; |
a5d16a4d | 4380 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4381 | if (data->rpc_status == 0) |
4382 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4383 | else | |
4384 | goto out; | |
4385 | } | |
4386 | if (data->rpc_status == 0) { | |
f597c537 | 4387 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
a5d16a4d | 4388 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; |
3d4ff43d | 4389 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4390 | } |
a5d16a4d | 4391 | out: |
3110ff80 | 4392 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4393 | } |
4394 | ||
4395 | static void nfs4_lock_release(void *calldata) | |
4396 | { | |
4397 | struct nfs4_lockdata *data = calldata; | |
4398 | ||
3110ff80 | 4399 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4400 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4401 | if (data->cancelled != 0) { |
4402 | struct rpc_task *task; | |
4403 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4404 | data->arg.lock_seqid); | |
4405 | if (!IS_ERR(task)) | |
bf294b41 | 4406 | rpc_put_task_async(task); |
3110ff80 | 4407 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4408 | } else |
4409 | nfs_free_seqid(data->arg.lock_seqid); | |
4410 | nfs4_put_lock_state(data->lsp); | |
4411 | put_nfs_open_context(data->ctx); | |
4412 | kfree(data); | |
3110ff80 | 4413 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4414 | } |
4415 | ||
4416 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4417 | .rpc_call_prepare = nfs4_lock_prepare, | |
4418 | .rpc_call_done = nfs4_lock_done, | |
4419 | .rpc_release = nfs4_lock_release, | |
4420 | }; | |
4421 | ||
b257957e AB |
4422 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4423 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4424 | .rpc_call_done = nfs4_lock_done, | |
4425 | .rpc_release = nfs4_lock_release, | |
4426 | }; | |
4427 | ||
2bee72a6 TM |
4428 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4429 | { | |
2bee72a6 TM |
4430 | switch (error) { |
4431 | case -NFS4ERR_ADMIN_REVOKED: | |
4432 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4433 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4434 | if (new_lock_owner != 0 || |
4435 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4436 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4437 | break; |
4438 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4439 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4440 | case -NFS4ERR_EXPIRED: |
4441 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4442 | }; |
4443 | } | |
4444 | ||
afe6c27c | 4445 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4446 | { |
4447 | struct nfs4_lockdata *data; | |
4448 | struct rpc_task *task; | |
5138fde0 TM |
4449 | struct rpc_message msg = { |
4450 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4451 | .rpc_cred = state->owner->so_cred, | |
4452 | }; | |
c970aa85 TM |
4453 | struct rpc_task_setup task_setup_data = { |
4454 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4455 | .rpc_message = &msg, |
c970aa85 | 4456 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4457 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4458 | .flags = RPC_TASK_ASYNC, |
4459 | }; | |
a5d16a4d TM |
4460 | int ret; |
4461 | ||
3110ff80 | 4462 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4463 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4464 | fl->fl_u.nfs4_fl.owner, |
4465 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4466 | if (data == NULL) |
4467 | return -ENOMEM; | |
4468 | if (IS_SETLKW(cmd)) | |
4469 | data->arg.block = 1; | |
b257957e AB |
4470 | if (recovery_type > NFS_LOCK_NEW) { |
4471 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4472 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4473 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4474 | } | |
9d12b216 | 4475 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4476 | msg.rpc_argp = &data->arg; |
4477 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4478 | task_setup_data.callback_data = data; |
4479 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4480 | if (IS_ERR(task)) |
a5d16a4d | 4481 | return PTR_ERR(task); |
a5d16a4d TM |
4482 | ret = nfs4_wait_for_completion_rpc_task(task); |
4483 | if (ret == 0) { | |
4484 | ret = data->rpc_status; | |
2bee72a6 TM |
4485 | if (ret) |
4486 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4487 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4488 | } else |
4489 | data->cancelled = 1; | |
e6b3c4db | 4490 | rpc_put_task(task); |
3110ff80 | 4491 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4492 | return ret; |
1da177e4 LT |
4493 | } |
4494 | ||
4495 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4496 | { | |
202b50dc TM |
4497 | struct nfs_server *server = NFS_SERVER(state->inode); |
4498 | struct nfs4_exception exception = { }; | |
4499 | int err; | |
4500 | ||
4501 | do { | |
42a2d13e TM |
4502 | /* Cache the lock if possible... */ |
4503 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4504 | return 0; | |
afe6c27c | 4505 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4506 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4507 | break; |
4508 | nfs4_handle_exception(server, err, &exception); | |
4509 | } while (exception.retry); | |
4510 | return err; | |
1da177e4 LT |
4511 | } |
4512 | ||
4513 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4514 | { | |
202b50dc TM |
4515 | struct nfs_server *server = NFS_SERVER(state->inode); |
4516 | struct nfs4_exception exception = { }; | |
4517 | int err; | |
4518 | ||
6bfc93ef TM |
4519 | err = nfs4_set_lock_state(state, request); |
4520 | if (err != 0) | |
4521 | return err; | |
202b50dc | 4522 | do { |
42a2d13e TM |
4523 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4524 | return 0; | |
afe6c27c | 4525 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4526 | switch (err) { |
4527 | default: | |
4528 | goto out; | |
4529 | case -NFS4ERR_GRACE: | |
4530 | case -NFS4ERR_DELAY: | |
4531 | nfs4_handle_exception(server, err, &exception); | |
4532 | err = 0; | |
4533 | } | |
202b50dc | 4534 | } while (exception.retry); |
a9ed2e25 | 4535 | out: |
202b50dc | 4536 | return err; |
1da177e4 LT |
4537 | } |
4538 | ||
f062eb6c | 4539 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 4540 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4541 | { |
b01dd1d8 BS |
4542 | int status, ret = NFS_OK; |
4543 | struct nfs4_lock_state *lsp; | |
f062eb6c BS |
4544 | struct nfs_server *server = NFS_SERVER(state->inode); |
4545 | ||
b01dd1d8 BS |
4546 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
4547 | if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { | |
4548 | status = nfs41_test_stateid(server, &lsp->ls_stateid); | |
4549 | if (status != NFS_OK) { | |
4550 | nfs41_free_stateid(server, &lsp->ls_stateid); | |
4551 | lsp->ls_flags &= ~NFS_LOCK_INITIALIZED; | |
4552 | ret = status; | |
4553 | } | |
4554 | } | |
4555 | }; | |
4556 | ||
4557 | return ret; | |
4558 | } | |
4559 | ||
4560 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4561 | { | |
4562 | int status = NFS_OK; | |
4563 | ||
4564 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4565 | status = nfs41_check_expired_locks(state); | |
f062eb6c | 4566 | if (status == NFS_OK) |
b01dd1d8 | 4567 | return status; |
f062eb6c BS |
4568 | return nfs4_lock_expired(state, request); |
4569 | } | |
4570 | #endif | |
4571 | ||
1da177e4 LT |
4572 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4573 | { | |
19e03c57 | 4574 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4575 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4576 | int status = -ENOLCK; |
1da177e4 | 4577 | |
8e469ebd TM |
4578 | if ((fl_flags & FL_POSIX) && |
4579 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4580 | goto out; | |
6bfc93ef | 4581 | /* Is this a delegated open? */ |
6bfc93ef TM |
4582 | status = nfs4_set_lock_state(state, request); |
4583 | if (status != 0) | |
4584 | goto out; | |
01c3b861 TM |
4585 | request->fl_flags |= FL_ACCESS; |
4586 | status = do_vfs_lock(request->fl_file, request); | |
4587 | if (status < 0) | |
4588 | goto out; | |
19e03c57 | 4589 | down_read(&nfsi->rwsem); |
01c3b861 | 4590 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4591 | /* Yes: cache locks! */ |
01c3b861 | 4592 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4593 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4594 | status = do_vfs_lock(request->fl_file, request); | |
4595 | goto out_unlock; | |
01c3b861 | 4596 | } |
afe6c27c | 4597 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4598 | if (status != 0) |
01c3b861 | 4599 | goto out_unlock; |
6bfc93ef | 4600 | /* Note: we always want to sleep here! */ |
01c3b861 | 4601 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4602 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4603 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4604 | "manager!\n", __func__); | |
01c3b861 | 4605 | out_unlock: |
19e03c57 | 4606 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4607 | out: |
4608 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4609 | return status; |
4610 | } | |
4611 | ||
4612 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4613 | { | |
a1d0b5ee TM |
4614 | struct nfs4_exception exception = { |
4615 | .state = state, | |
4616 | }; | |
1da177e4 LT |
4617 | int err; |
4618 | ||
4619 | do { | |
965b5d67 TM |
4620 | err = _nfs4_proc_setlk(state, cmd, request); |
4621 | if (err == -NFS4ERR_DENIED) | |
4622 | err = -EAGAIN; | |
1da177e4 | 4623 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4624 | err, &exception); |
1da177e4 LT |
4625 | } while (exception.retry); |
4626 | return err; | |
4627 | } | |
4628 | ||
4629 | static int | |
4630 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4631 | { | |
4632 | struct nfs_open_context *ctx; | |
4633 | struct nfs4_state *state; | |
4634 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4635 | int status; | |
4636 | ||
4637 | /* verify open state */ | |
cd3758e3 | 4638 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4639 | state = ctx->state; |
4640 | ||
4641 | if (request->fl_start < 0 || request->fl_end < 0) | |
4642 | return -EINVAL; | |
4643 | ||
d953126a TM |
4644 | if (IS_GETLK(cmd)) { |
4645 | if (state != NULL) | |
4646 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4647 | return 0; | |
4648 | } | |
1da177e4 LT |
4649 | |
4650 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4651 | return -EINVAL; | |
4652 | ||
d953126a TM |
4653 | if (request->fl_type == F_UNLCK) { |
4654 | if (state != NULL) | |
4655 | return nfs4_proc_unlck(state, cmd, request); | |
4656 | return 0; | |
4657 | } | |
1da177e4 | 4658 | |
d953126a TM |
4659 | if (state == NULL) |
4660 | return -ENOLCK; | |
1da177e4 LT |
4661 | do { |
4662 | status = nfs4_proc_setlk(state, cmd, request); | |
4663 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4664 | break; | |
4665 | timeout = nfs4_set_lock_task_retry(timeout); | |
4666 | status = -ERESTARTSYS; | |
4667 | if (signalled()) | |
4668 | break; | |
4669 | } while(status < 0); | |
1da177e4 LT |
4670 | return status; |
4671 | } | |
4672 | ||
888e694c TM |
4673 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4674 | { | |
4675 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4676 | struct nfs4_exception exception = { }; | |
4677 | int err; | |
4678 | ||
4679 | err = nfs4_set_lock_state(state, fl); | |
4680 | if (err != 0) | |
4681 | goto out; | |
4682 | do { | |
afe6c27c | 4683 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4684 | switch (err) { |
4685 | default: | |
a030889a WAA |
4686 | printk(KERN_ERR "NFS: %s: unhandled error " |
4687 | "%d.\n", __func__, err); | |
d5122201 | 4688 | case 0: |
965b5d67 | 4689 | case -ESTALE: |
d5122201 TM |
4690 | goto out; |
4691 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4692 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4693 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4694 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4695 | nfs4_schedule_lease_recovery(server->nfs_client); |
4696 | goto out; | |
74e7bb73 RL |
4697 | case -NFS4ERR_BADSESSION: |
4698 | case -NFS4ERR_BADSLOT: | |
4699 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4700 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4701 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4702 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4703 | goto out; |
965b5d67 TM |
4704 | case -ERESTARTSYS: |
4705 | /* | |
4706 | * The show must go on: exit, but mark the | |
4707 | * stateid as needing recovery. | |
4708 | */ | |
a1d0b5ee | 4709 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
4710 | case -NFS4ERR_ADMIN_REVOKED: |
4711 | case -NFS4ERR_BAD_STATEID: | |
4712 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4713 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4714 | err = 0; |
4715 | goto out; | |
168667c4 TM |
4716 | case -EKEYEXPIRED: |
4717 | /* | |
4718 | * User RPCSEC_GSS context has expired. | |
4719 | * We cannot recover this stateid now, so | |
4720 | * skip it and allow recovery thread to | |
4721 | * proceed. | |
4722 | */ | |
4723 | err = 0; | |
4724 | goto out; | |
965b5d67 TM |
4725 | case -ENOMEM: |
4726 | case -NFS4ERR_DENIED: | |
4727 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4728 | err = 0; | |
4729 | goto out; | |
d5122201 TM |
4730 | case -NFS4ERR_DELAY: |
4731 | break; | |
4732 | } | |
888e694c TM |
4733 | err = nfs4_handle_exception(server, err, &exception); |
4734 | } while (exception.retry); | |
4735 | out: | |
4736 | return err; | |
4737 | } | |
6b3b5496 | 4738 | |
d3c7b7cc TM |
4739 | static void nfs4_release_lockowner_release(void *calldata) |
4740 | { | |
4741 | kfree(calldata); | |
4742 | } | |
4743 | ||
4744 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4745 | .rpc_release = nfs4_release_lockowner_release, | |
4746 | }; | |
4747 | ||
4748 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4749 | { | |
4750 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4751 | struct nfs_release_lockowner_args *args; | |
4752 | struct rpc_message msg = { | |
4753 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4754 | }; | |
4755 | ||
4756 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4757 | return; | |
4758 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4759 | if (!args) | |
4760 | return; | |
4761 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
48c22eb2 | 4762 | args->lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4763 | args->lock_owner.s_dev = server->s_dev; |
d3c7b7cc TM |
4764 | msg.rpc_argp = args; |
4765 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4766 | } | |
4767 | ||
aa1870af BF |
4768 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4769 | ||
64c2ce8b AK |
4770 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4771 | const void *buf, size_t buflen, | |
4772 | int flags, int type) | |
6b3b5496 | 4773 | { |
64c2ce8b AK |
4774 | if (strcmp(key, "") != 0) |
4775 | return -EINVAL; | |
4b580ee3 | 4776 | |
64c2ce8b | 4777 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4778 | } |
4779 | ||
64c2ce8b AK |
4780 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4781 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4782 | { |
64c2ce8b AK |
4783 | if (strcmp(key, "") != 0) |
4784 | return -EINVAL; | |
aa1870af | 4785 | |
64c2ce8b | 4786 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4787 | } |
4788 | ||
64c2ce8b AK |
4789 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4790 | size_t list_len, const char *name, | |
4791 | size_t name_len, int type) | |
6b3b5496 | 4792 | { |
64c2ce8b | 4793 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4794 | |
096455a2 BF |
4795 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4796 | return 0; | |
64c2ce8b AK |
4797 | |
4798 | if (list && len <= list_len) | |
4799 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4800 | return len; |
6b3b5496 BF |
4801 | } |
4802 | ||
533eb461 AA |
4803 | /* |
4804 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4805 | */ | |
69aaaae1 TM |
4806 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4807 | { | |
533eb461 AA |
4808 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4809 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4810 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 4811 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
4812 | return; |
4813 | ||
4814 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 4815 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
4816 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
4817 | fattr->nlink = 2; | |
4818 | } | |
4819 | ||
56659e99 | 4820 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4821 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4822 | { |
4823 | struct nfs_server *server = NFS_SERVER(dir); | |
4824 | u32 bitmask[2] = { | |
361e624f | 4825 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
4826 | }; |
4827 | struct nfs4_fs_locations_arg args = { | |
4828 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4829 | .name = name, |
683b57b4 TM |
4830 | .page = page, |
4831 | .bitmask = bitmask, | |
4832 | }; | |
22958463 BH |
4833 | struct nfs4_fs_locations_res res = { |
4834 | .fs_locations = fs_locations, | |
4835 | }; | |
683b57b4 TM |
4836 | struct rpc_message msg = { |
4837 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4838 | .rpc_argp = &args, | |
22958463 | 4839 | .rpc_resp = &res, |
683b57b4 TM |
4840 | }; |
4841 | int status; | |
4842 | ||
3110ff80 | 4843 | dprintk("%s: start\n", __func__); |
533eb461 AA |
4844 | |
4845 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
4846 | * is not supported */ | |
4847 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
4848 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
4849 | else | |
4850 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
4851 | ||
c228fd3a | 4852 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4853 | fs_locations->server = server; |
830b8e33 | 4854 | fs_locations->nlocations = 0; |
7c513058 | 4855 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 4856 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4857 | return status; |
4858 | } | |
4859 | ||
5a5ea0d4 BS |
4860 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
4861 | { | |
4862 | int status; | |
4863 | struct nfs4_secinfo_arg args = { | |
4864 | .dir_fh = NFS_FH(dir), | |
4865 | .name = name, | |
4866 | }; | |
4867 | struct nfs4_secinfo_res res = { | |
4868 | .flavors = flavors, | |
4869 | }; | |
4870 | struct rpc_message msg = { | |
4871 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
4872 | .rpc_argp = &args, | |
4873 | .rpc_resp = &res, | |
4874 | }; | |
4875 | ||
4876 | dprintk("NFS call secinfo %s\n", name->name); | |
4877 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
4878 | dprintk("NFS reply secinfo: %d\n", status); | |
4879 | return status; | |
4880 | } | |
4881 | ||
4882 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) | |
4883 | { | |
4884 | struct nfs4_exception exception = { }; | |
4885 | int err; | |
4886 | do { | |
4887 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
4888 | _nfs4_proc_secinfo(dir, name, flavors), | |
4889 | &exception); | |
4890 | } while (exception.retry); | |
4891 | return err; | |
4892 | } | |
4893 | ||
557134a3 | 4894 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4895 | /* |
4896 | * Check the exchange flags returned by the server for invalid flags, having | |
4897 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4898 | * DS flags set. | |
4899 | */ | |
4900 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4901 | { | |
4902 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4903 | goto out_inval; | |
4904 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4905 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4906 | goto out_inval; | |
4907 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4908 | goto out_inval; | |
4909 | return NFS_OK; | |
4910 | out_inval: | |
4911 | return -NFS4ERR_INVAL; | |
4912 | } | |
4913 | ||
78fe0f41 WAA |
4914 | static bool |
4915 | nfs41_same_server_scope(struct server_scope *a, struct server_scope *b) | |
4916 | { | |
4917 | if (a->server_scope_sz == b->server_scope_sz && | |
4918 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
4919 | return true; | |
4920 | ||
4921 | return false; | |
4922 | } | |
4923 | ||
99fe60d0 BH |
4924 | /* |
4925 | * nfs4_proc_exchange_id() | |
4926 | * | |
4927 | * Since the clientid has expired, all compounds using sessions | |
4928 | * associated with the stale clientid will be returning | |
4929 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4930 | * be in some phase of session reset. | |
4931 | */ | |
4d643d1d | 4932 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4933 | { |
4934 | nfs4_verifier verifier; | |
4935 | struct nfs41_exchange_id_args args = { | |
4936 | .client = clp, | |
357f54d6 | 4937 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4938 | }; |
4939 | struct nfs41_exchange_id_res res = { | |
4940 | .client = clp, | |
4941 | }; | |
4942 | int status; | |
4943 | struct rpc_message msg = { | |
4944 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4945 | .rpc_argp = &args, | |
4946 | .rpc_resp = &res, | |
4947 | .rpc_cred = cred, | |
4948 | }; | |
4949 | __be32 *p; | |
4950 | ||
4951 | dprintk("--> %s\n", __func__); | |
4952 | BUG_ON(clp == NULL); | |
a7b72103 | 4953 | |
99fe60d0 BH |
4954 | p = (u32 *)verifier.data; |
4955 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4956 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4957 | args.verifier = &verifier; | |
4958 | ||
c7a360b0 AA |
4959 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4960 | "%s/%s.%s/%u", | |
4961 | clp->cl_ipaddr, | |
4962 | init_utsname()->nodename, | |
4963 | init_utsname()->domainname, | |
4964 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4965 | |
78fe0f41 | 4966 | res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); |
9edbd953 WAA |
4967 | if (unlikely(!res.server_scope)) { |
4968 | status = -ENOMEM; | |
4969 | goto out; | |
4970 | } | |
78fe0f41 | 4971 | |
7d2ed9ac WAA |
4972 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_KERNEL); |
4973 | if (unlikely(!res.impl_id)) { | |
4974 | status = -ENOMEM; | |
4975 | goto out_server_scope; | |
4976 | } | |
4977 | ||
1bd714f2 | 4978 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c7a360b0 AA |
4979 | if (!status) |
4980 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
78fe0f41 | 4981 | |
7d2ed9ac WAA |
4982 | if (!status) { |
4983 | /* use the most recent implementation id */ | |
4984 | kfree(clp->impl_id); | |
4985 | clp->impl_id = res.impl_id; | |
4986 | } else | |
4987 | kfree(res.impl_id); | |
4988 | ||
78fe0f41 WAA |
4989 | if (!status) { |
4990 | if (clp->server_scope && | |
4991 | !nfs41_same_server_scope(clp->server_scope, | |
4992 | res.server_scope)) { | |
4993 | dprintk("%s: server_scope mismatch detected\n", | |
4994 | __func__); | |
4995 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
4996 | kfree(clp->server_scope); | |
4997 | clp->server_scope = NULL; | |
4998 | } | |
4999 | ||
9edbd953 | 5000 | if (!clp->server_scope) { |
78fe0f41 | 5001 | clp->server_scope = res.server_scope; |
9edbd953 WAA |
5002 | goto out; |
5003 | } | |
78fe0f41 | 5004 | } |
7d2ed9ac WAA |
5005 | |
5006 | out_server_scope: | |
9edbd953 WAA |
5007 | kfree(res.server_scope); |
5008 | out: | |
7d2ed9ac WAA |
5009 | if (clp->impl_id) |
5010 | dprintk("%s: Server Implementation ID: " | |
5011 | "domain: %s, name: %s, date: %llu,%u\n", | |
5012 | __func__, clp->impl_id->domain, clp->impl_id->name, | |
5013 | clp->impl_id->date.seconds, | |
5014 | clp->impl_id->date.nseconds); | |
99fe60d0 BH |
5015 | dprintk("<-- %s status= %d\n", __func__, status); |
5016 | return status; | |
5017 | } | |
5018 | ||
2050f0cc AA |
5019 | struct nfs4_get_lease_time_data { |
5020 | struct nfs4_get_lease_time_args *args; | |
5021 | struct nfs4_get_lease_time_res *res; | |
5022 | struct nfs_client *clp; | |
5023 | }; | |
5024 | ||
5025 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5026 | void *calldata) | |
5027 | { | |
5028 | int ret; | |
5029 | struct nfs4_get_lease_time_data *data = | |
5030 | (struct nfs4_get_lease_time_data *)calldata; | |
5031 | ||
5032 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5033 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5034 | /* just setup sequence, do not trigger session recovery |
5035 | since we're invoked within one */ | |
5036 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5037 | &data->args->la_seq_args, |
9d12b216 | 5038 | &data->res->lr_seq_res, task); |
2050f0cc AA |
5039 | |
5040 | BUG_ON(ret == -EAGAIN); | |
5041 | rpc_call_start(task); | |
5042 | dprintk("<-- %s\n", __func__); | |
5043 | } | |
5044 | ||
5045 | /* | |
5046 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5047 | * from sequence operation or clientid errors. | |
5048 | */ | |
5049 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5050 | { | |
5051 | struct nfs4_get_lease_time_data *data = | |
5052 | (struct nfs4_get_lease_time_data *)calldata; | |
5053 | ||
5054 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5055 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5056 | return; | |
2050f0cc AA |
5057 | switch (task->tk_status) { |
5058 | case -NFS4ERR_DELAY: | |
5059 | case -NFS4ERR_GRACE: | |
5060 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5061 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5062 | task->tk_status = 0; | |
a8a4ae3a AA |
5063 | /* fall through */ |
5064 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5065 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5066 | return; |
5067 | } | |
2050f0cc AA |
5068 | dprintk("<-- %s\n", __func__); |
5069 | } | |
5070 | ||
5071 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
5072 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
5073 | .rpc_call_done = nfs4_get_lease_time_done, | |
5074 | }; | |
5075 | ||
5076 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5077 | { | |
5078 | struct rpc_task *task; | |
5079 | struct nfs4_get_lease_time_args args; | |
5080 | struct nfs4_get_lease_time_res res = { | |
5081 | .lr_fsinfo = fsinfo, | |
5082 | }; | |
5083 | struct nfs4_get_lease_time_data data = { | |
5084 | .args = &args, | |
5085 | .res = &res, | |
5086 | .clp = clp, | |
5087 | }; | |
5088 | struct rpc_message msg = { | |
5089 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5090 | .rpc_argp = &args, | |
5091 | .rpc_resp = &res, | |
5092 | }; | |
5093 | struct rpc_task_setup task_setup = { | |
5094 | .rpc_client = clp->cl_rpcclient, | |
5095 | .rpc_message = &msg, | |
5096 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5097 | .callback_data = &data, |
5098 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5099 | }; |
5100 | int status; | |
5101 | ||
9d12b216 | 5102 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5103 | dprintk("--> %s\n", __func__); |
5104 | task = rpc_run_task(&task_setup); | |
5105 | ||
5106 | if (IS_ERR(task)) | |
5107 | status = PTR_ERR(task); | |
5108 | else { | |
5109 | status = task->tk_status; | |
5110 | rpc_put_task(task); | |
5111 | } | |
5112 | dprintk("<-- %s return %d\n", __func__, status); | |
5113 | ||
5114 | return status; | |
5115 | } | |
5116 | ||
f86f36a6 TM |
5117 | static struct nfs4_slot *nfs4_alloc_slots(u32 max_slots, gfp_t gfp_flags) |
5118 | { | |
5119 | return kcalloc(max_slots, sizeof(struct nfs4_slot), gfp_flags); | |
5120 | } | |
5121 | ||
5122 | static void nfs4_add_and_init_slots(struct nfs4_slot_table *tbl, | |
5123 | struct nfs4_slot *new, | |
5124 | u32 max_slots, | |
5125 | u32 ivalue) | |
5126 | { | |
5127 | struct nfs4_slot *old = NULL; | |
5128 | u32 i; | |
5129 | ||
5130 | spin_lock(&tbl->slot_tbl_lock); | |
5131 | if (new) { | |
5132 | old = tbl->slots; | |
5133 | tbl->slots = new; | |
5134 | tbl->max_slots = max_slots; | |
5135 | } | |
5136 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5137 | for (i = 0; i < tbl->max_slots; i++) | |
5138 | tbl->slots[i].seq_nr = ivalue; | |
5139 | spin_unlock(&tbl->slot_tbl_lock); | |
5140 | kfree(old); | |
5141 | } | |
5142 | ||
b73dafa7 | 5143 | /* |
f86f36a6 | 5144 | * (re)Initialise a slot table |
b73dafa7 | 5145 | */ |
f86f36a6 TM |
5146 | static int nfs4_realloc_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5147 | u32 ivalue) | |
ac72b7b3 | 5148 | { |
104aeba4 | 5149 | struct nfs4_slot *new = NULL; |
f86f36a6 | 5150 | int ret = -ENOMEM; |
ac72b7b3 | 5151 | |
104aeba4 AA |
5152 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5153 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5154 | |
104aeba4 AA |
5155 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5156 | if (max_reqs != tbl->max_slots) { | |
f86f36a6 | 5157 | new = nfs4_alloc_slots(max_reqs, GFP_NOFS); |
104aeba4 AA |
5158 | if (!new) |
5159 | goto out; | |
104aeba4 | 5160 | } |
f86f36a6 TM |
5161 | ret = 0; |
5162 | ||
5163 | nfs4_add_and_init_slots(tbl, new, max_reqs, ivalue); | |
ac72b7b3 AA |
5164 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, |
5165 | tbl, tbl->slots, tbl->max_slots); | |
5166 | out: | |
5167 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5168 | return ret; | |
5169 | } | |
5170 | ||
f8625a6a RL |
5171 | /* Destroy the slot table */ |
5172 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5173 | { | |
5174 | if (session->fc_slot_table.slots != NULL) { | |
5175 | kfree(session->fc_slot_table.slots); | |
5176 | session->fc_slot_table.slots = NULL; | |
5177 | } | |
5178 | if (session->bc_slot_table.slots != NULL) { | |
5179 | kfree(session->bc_slot_table.slots); | |
5180 | session->bc_slot_table.slots = NULL; | |
5181 | } | |
5182 | return; | |
5183 | } | |
5184 | ||
050047ce | 5185 | /* |
aacd5537 | 5186 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5187 | */ |
aacd5537 | 5188 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5189 | { |
f26468fb | 5190 | struct nfs4_slot_table *tbl; |
aacd5537 | 5191 | int status; |
050047ce | 5192 | |
aacd5537 AA |
5193 | dprintk("--> %s\n", __func__); |
5194 | /* Fore channel */ | |
5195 | tbl = &ses->fc_slot_table; | |
f86f36a6 TM |
5196 | status = nfs4_realloc_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5197 | if (status) /* -ENOMEM */ | |
5198 | return status; | |
aacd5537 AA |
5199 | /* Back channel */ |
5200 | tbl = &ses->bc_slot_table; | |
f86f36a6 TM |
5201 | status = nfs4_realloc_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
5202 | if (status && tbl->slots == NULL) | |
5203 | /* Fore and back channel share a connection so get | |
5204 | * both slot tables or neither */ | |
5205 | nfs4_destroy_slot_tables(ses); | |
f8625a6a | 5206 | return status; |
557134a3 AA |
5207 | } |
5208 | ||
5209 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5210 | { | |
5211 | struct nfs4_session *session; | |
5212 | struct nfs4_slot_table *tbl; | |
5213 | ||
8535b2be | 5214 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5215 | if (!session) |
5216 | return NULL; | |
76db6d95 | 5217 | |
557134a3 | 5218 | tbl = &session->fc_slot_table; |
45d43c29 | 5219 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5220 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5221 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5222 | init_completion(&tbl->complete); |
f8625a6a RL |
5223 | |
5224 | tbl = &session->bc_slot_table; | |
45d43c29 | 5225 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5226 | spin_lock_init(&tbl->slot_tbl_lock); |
5227 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5228 | init_completion(&tbl->complete); |
f8625a6a | 5229 | |
1055d76d TM |
5230 | session->session_state = 1<<NFS4_SESSION_INITING; |
5231 | ||
557134a3 AA |
5232 | session->clp = clp; |
5233 | return session; | |
5234 | } | |
5235 | ||
5236 | void nfs4_destroy_session(struct nfs4_session *session) | |
5237 | { | |
2446ab60 TM |
5238 | struct rpc_xprt *xprt; |
5239 | ||
5a0ffe54 | 5240 | nfs4_proc_destroy_session(session); |
2446ab60 TM |
5241 | |
5242 | rcu_read_lock(); | |
5243 | xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); | |
5244 | rcu_read_unlock(); | |
5a0ffe54 | 5245 | dprintk("%s Destroy backchannel for xprt %p\n", |
2446ab60 TM |
5246 | __func__, xprt); |
5247 | xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5248 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5249 | kfree(session); |
5250 | } | |
5251 | ||
fc931582 AA |
5252 | /* |
5253 | * Initialize the values to be used by the client in CREATE_SESSION | |
5254 | * If nfs4_init_session set the fore channel request and response sizes, | |
5255 | * use them. | |
5256 | * | |
5257 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5258 | * always set csa_cachethis to FALSE because the current implementation | |
5259 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5260 | */ | |
5261 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5262 | { | |
5263 | struct nfs4_session *session = args->client->cl_session; | |
5264 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5265 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5266 | ||
5267 | if (mxrqst_sz == 0) | |
5268 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5269 | if (mxresp_sz == 0) | |
5270 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5271 | /* Fore channel attributes */ | |
fc931582 AA |
5272 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5273 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5274 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5275 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5276 | |
5277 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5278 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5279 | __func__, |
5280 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5281 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5282 | |
5283 | /* Back channel attributes */ | |
fc931582 AA |
5284 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5285 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5286 | args->bc_attrs.max_resp_sz_cached = 0; | |
5287 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5288 | args->bc_attrs.max_reqs = 1; | |
5289 | ||
5290 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5291 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5292 | __func__, | |
5293 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5294 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5295 | args->bc_attrs.max_reqs); | |
5296 | } | |
5297 | ||
43c2e885 | 5298 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5299 | { |
43c2e885 BF |
5300 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5301 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5302 | ||
43c2e885 BF |
5303 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5304 | return -EINVAL; | |
5305 | /* | |
5306 | * Our requested max_ops is the minimum we need; we're not | |
5307 | * prepared to break up compounds into smaller pieces than that. | |
5308 | * So, no point even trying to continue if the server won't | |
5309 | * cooperate: | |
5310 | */ | |
5311 | if (rcvd->max_ops < sent->max_ops) | |
5312 | return -EINVAL; | |
5313 | if (rcvd->max_reqs == 0) | |
5314 | return -EINVAL; | |
b4b9a0c1 VG |
5315 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5316 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5317 | return 0; |
8d35301d AA |
5318 | } |
5319 | ||
43c2e885 BF |
5320 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5321 | { | |
5322 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5323 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5324 | |
43c2e885 BF |
5325 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5326 | return -EINVAL; | |
5327 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5328 | return -EINVAL; | |
5329 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5330 | return -EINVAL; | |
5331 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5332 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5333 | return -EINVAL; |
b4b9a0c1 | 5334 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5335 | return -EINVAL; |
5336 | return 0; | |
5337 | } | |
8d35301d | 5338 | |
8d35301d AA |
5339 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5340 | struct nfs4_session *session) | |
5341 | { | |
43c2e885 | 5342 | int ret; |
8d35301d | 5343 | |
43c2e885 BF |
5344 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5345 | if (ret) | |
5346 | return ret; | |
5347 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5348 | } |
5349 | ||
fc931582 AA |
5350 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5351 | { | |
5352 | struct nfs4_session *session = clp->cl_session; | |
5353 | struct nfs41_create_session_args args = { | |
5354 | .client = clp, | |
5355 | .cb_program = NFS4_CALLBACK, | |
5356 | }; | |
5357 | struct nfs41_create_session_res res = { | |
5358 | .client = clp, | |
5359 | }; | |
5360 | struct rpc_message msg = { | |
5361 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5362 | .rpc_argp = &args, | |
5363 | .rpc_resp = &res, | |
5364 | }; | |
5365 | int status; | |
5366 | ||
5367 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5368 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5369 | |
1bd714f2 | 5370 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5371 | |
8d35301d AA |
5372 | if (!status) |
5373 | /* Verify the session's negotiated channel_attrs values */ | |
5374 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5375 | if (!status) { |
5376 | /* Increment the clientid slot sequence id */ | |
5377 | clp->cl_seqid++; | |
5378 | } | |
5379 | ||
5380 | return status; | |
5381 | } | |
5382 | ||
5383 | /* | |
5384 | * Issues a CREATE_SESSION operation to the server. | |
5385 | * It is the responsibility of the caller to verify the session is | |
5386 | * expired before calling this routine. | |
5387 | */ | |
f26468fb | 5388 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5389 | { |
5390 | int status; | |
5391 | unsigned *ptr; | |
fc931582 AA |
5392 | struct nfs4_session *session = clp->cl_session; |
5393 | ||
5394 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5395 | ||
fd954ae1 | 5396 | status = _nfs4_proc_create_session(clp); |
fc931582 AA |
5397 | if (status) |
5398 | goto out; | |
5399 | ||
aacd5537 AA |
5400 | /* Init or reset the session slot tables */ |
5401 | status = nfs4_setup_session_slot_tables(session); | |
5402 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5403 | if (status) |
5404 | goto out; | |
5405 | ||
5406 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5407 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5408 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5409 | out: |
5410 | dprintk("<-- %s\n", __func__); | |
5411 | return status; | |
5412 | } | |
5413 | ||
0f3e66c6 AA |
5414 | /* |
5415 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5416 | * The caller must serialize access to this routine. | |
5417 | */ | |
5418 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5419 | { | |
5420 | int status = 0; | |
5421 | struct rpc_message msg; | |
5422 | ||
5423 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5424 | ||
5425 | /* session is still being setup */ | |
5426 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5427 | return status; | |
5428 | ||
5429 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5430 | msg.rpc_argp = session; | |
5431 | msg.rpc_resp = NULL; | |
5432 | msg.rpc_cred = NULL; | |
1bd714f2 | 5433 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5434 | |
5435 | if (status) | |
5436 | printk(KERN_WARNING | |
f9fd2d9c | 5437 | "NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5438 | "Session has been destroyed regardless...\n", status); |
5439 | ||
5440 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5441 | return status; | |
5442 | } | |
5443 | ||
fccba804 TM |
5444 | int nfs4_init_session(struct nfs_server *server) |
5445 | { | |
5446 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5447 | struct nfs4_session *session; |
68bf05ef | 5448 | unsigned int rsize, wsize; |
fccba804 TM |
5449 | int ret; |
5450 | ||
5451 | if (!nfs4_has_session(clp)) | |
5452 | return 0; | |
5453 | ||
1055d76d TM |
5454 | session = clp->cl_session; |
5455 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5456 | return 0; | |
5457 | ||
68bf05ef AA |
5458 | rsize = server->rsize; |
5459 | if (rsize == 0) | |
5460 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5461 | wsize = server->wsize; | |
5462 | if (wsize == 0) | |
5463 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5464 | ||
68bf05ef AA |
5465 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5466 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5467 | |
fccba804 TM |
5468 | ret = nfs4_recover_expired_lease(server); |
5469 | if (!ret) | |
5470 | ret = nfs4_check_client_ready(clp); | |
5471 | return ret; | |
5472 | } | |
5473 | ||
d83217c1 AA |
5474 | int nfs4_init_ds_session(struct nfs_client *clp) |
5475 | { | |
5476 | struct nfs4_session *session = clp->cl_session; | |
5477 | int ret; | |
5478 | ||
5479 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5480 | return 0; | |
5481 | ||
5482 | ret = nfs4_client_recover_expired_lease(clp); | |
5483 | if (!ret) | |
5484 | /* Test for the DS role */ | |
5485 | if (!is_ds_client(clp)) | |
5486 | ret = -ENODEV; | |
5487 | if (!ret) | |
5488 | ret = nfs4_check_client_ready(clp); | |
5489 | return ret; | |
5490 | ||
5491 | } | |
5492 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5493 | ||
5494 | ||
fc01cea9 AA |
5495 | /* |
5496 | * Renew the cl_session lease. | |
5497 | */ | |
d5f8d3fe TM |
5498 | struct nfs4_sequence_data { |
5499 | struct nfs_client *clp; | |
5500 | struct nfs4_sequence_args args; | |
5501 | struct nfs4_sequence_res res; | |
5502 | }; | |
5503 | ||
dc96aef9 AB |
5504 | static void nfs41_sequence_release(void *data) |
5505 | { | |
d5f8d3fe TM |
5506 | struct nfs4_sequence_data *calldata = data; |
5507 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5508 | |
7135840f AB |
5509 | if (atomic_read(&clp->cl_count) > 1) |
5510 | nfs4_schedule_state_renewal(clp); | |
5511 | nfs_put_client(clp); | |
d5f8d3fe | 5512 | kfree(calldata); |
dc96aef9 AB |
5513 | } |
5514 | ||
aa5190d0 TM |
5515 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5516 | { | |
5517 | switch(task->tk_status) { | |
5518 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5519 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5520 | return -EAGAIN; | |
5521 | default: | |
0400a6b0 | 5522 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5523 | } |
5524 | return 0; | |
5525 | } | |
5526 | ||
dc96aef9 | 5527 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5528 | { |
d5f8d3fe TM |
5529 | struct nfs4_sequence_data *calldata = data; |
5530 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5531 | |
14516c3a TM |
5532 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5533 | return; | |
fc01cea9 AA |
5534 | |
5535 | if (task->tk_status < 0) { | |
5536 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5537 | if (atomic_read(&clp->cl_count) == 1) |
5538 | goto out; | |
fc01cea9 | 5539 | |
aa5190d0 TM |
5540 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5541 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5542 | return; |
5543 | } | |
5544 | } | |
fc01cea9 | 5545 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5546 | out: |
fc01cea9 AA |
5547 | dprintk("<-- %s\n", __func__); |
5548 | } | |
5549 | ||
5550 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5551 | { | |
d5f8d3fe TM |
5552 | struct nfs4_sequence_data *calldata = data; |
5553 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5554 | struct nfs4_sequence_args *args; |
5555 | struct nfs4_sequence_res *res; | |
5556 | ||
fc01cea9 AA |
5557 | args = task->tk_msg.rpc_argp; |
5558 | res = task->tk_msg.rpc_resp; | |
5559 | ||
9d12b216 | 5560 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
5561 | return; |
5562 | rpc_call_start(task); | |
5563 | } | |
5564 | ||
5565 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5566 | .rpc_call_done = nfs41_sequence_call_done, | |
5567 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5568 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5569 | }; |
5570 | ||
71ac6da9 | 5571 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5572 | { |
d5f8d3fe | 5573 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5574 | struct rpc_message msg = { |
5575 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5576 | .rpc_cred = cred, | |
5577 | }; | |
71ac6da9 TM |
5578 | struct rpc_task_setup task_setup_data = { |
5579 | .rpc_client = clp->cl_rpcclient, | |
5580 | .rpc_message = &msg, | |
5581 | .callback_ops = &nfs41_sequence_ops, | |
5582 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5583 | }; | |
fc01cea9 | 5584 | |
7135840f | 5585 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5586 | return ERR_PTR(-EIO); |
dfb4f309 | 5587 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5588 | if (calldata == NULL) { |
7135840f | 5589 | nfs_put_client(clp); |
71ac6da9 | 5590 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5591 | } |
9d12b216 | 5592 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
5593 | msg.rpc_argp = &calldata->args; |
5594 | msg.rpc_resp = &calldata->res; | |
5595 | calldata->clp = clp; | |
71ac6da9 | 5596 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5597 | |
71ac6da9 TM |
5598 | return rpc_run_task(&task_setup_data); |
5599 | } | |
5600 | ||
2f60ea6b | 5601 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5602 | { |
5603 | struct rpc_task *task; | |
5604 | int ret = 0; | |
5605 | ||
2f60ea6b TM |
5606 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5607 | return 0; | |
71ac6da9 TM |
5608 | task = _nfs41_proc_sequence(clp, cred); |
5609 | if (IS_ERR(task)) | |
5610 | ret = PTR_ERR(task); | |
5611 | else | |
bf294b41 | 5612 | rpc_put_task_async(task); |
71ac6da9 TM |
5613 | dprintk("<-- %s status=%d\n", __func__, ret); |
5614 | return ret; | |
5615 | } | |
5616 | ||
5617 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5618 | { | |
5619 | struct rpc_task *task; | |
5620 | int ret; | |
5621 | ||
5622 | task = _nfs41_proc_sequence(clp, cred); | |
5623 | if (IS_ERR(task)) { | |
5624 | ret = PTR_ERR(task); | |
5625 | goto out; | |
5626 | } | |
5627 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5628 | if (!ret) { |
5629 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5630 | ||
5631 | if (task->tk_status == 0) | |
5632 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5633 | ret = task->tk_status; |
b4410c2f | 5634 | } |
71ac6da9 TM |
5635 | rpc_put_task(task); |
5636 | out: | |
5637 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5638 | return ret; | |
fc01cea9 AA |
5639 | } |
5640 | ||
fce5c838 RL |
5641 | struct nfs4_reclaim_complete_data { |
5642 | struct nfs_client *clp; | |
5643 | struct nfs41_reclaim_complete_args arg; | |
5644 | struct nfs41_reclaim_complete_res res; | |
5645 | }; | |
5646 | ||
5647 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5648 | { | |
5649 | struct nfs4_reclaim_complete_data *calldata = data; | |
5650 | ||
b257957e | 5651 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5652 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5653 | &calldata->arg.seq_args, | |
9d12b216 | 5654 | &calldata->res.seq_res, task)) |
fce5c838 RL |
5655 | return; |
5656 | ||
5657 | rpc_call_start(task); | |
5658 | } | |
5659 | ||
aa5190d0 TM |
5660 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5661 | { | |
5662 | switch(task->tk_status) { | |
5663 | case 0: | |
5664 | case -NFS4ERR_COMPLETE_ALREADY: | |
5665 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5666 | break; | |
5667 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5668 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5669 | /* fall through */ |
5670 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5671 | return -EAGAIN; |
5672 | default: | |
0400a6b0 | 5673 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5674 | } |
5675 | return 0; | |
5676 | } | |
5677 | ||
fce5c838 RL |
5678 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5679 | { | |
5680 | struct nfs4_reclaim_complete_data *calldata = data; | |
5681 | struct nfs_client *clp = calldata->clp; | |
5682 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5683 | ||
5684 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5685 | if (!nfs41_sequence_done(task, res)) |
5686 | return; | |
fce5c838 | 5687 | |
aa5190d0 TM |
5688 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5689 | rpc_restart_call_prepare(task); | |
5690 | return; | |
5691 | } | |
fce5c838 RL |
5692 | dprintk("<-- %s\n", __func__); |
5693 | } | |
5694 | ||
5695 | static void nfs4_free_reclaim_complete_data(void *data) | |
5696 | { | |
5697 | struct nfs4_reclaim_complete_data *calldata = data; | |
5698 | ||
5699 | kfree(calldata); | |
5700 | } | |
5701 | ||
5702 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5703 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5704 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5705 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5706 | }; | |
5707 | ||
5708 | /* | |
5709 | * Issue a global reclaim complete. | |
5710 | */ | |
5711 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5712 | { | |
5713 | struct nfs4_reclaim_complete_data *calldata; | |
5714 | struct rpc_task *task; | |
5715 | struct rpc_message msg = { | |
5716 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5717 | }; | |
5718 | struct rpc_task_setup task_setup_data = { | |
5719 | .rpc_client = clp->cl_rpcclient, | |
5720 | .rpc_message = &msg, | |
5721 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5722 | .flags = RPC_TASK_ASYNC, | |
5723 | }; | |
5724 | int status = -ENOMEM; | |
5725 | ||
5726 | dprintk("--> %s\n", __func__); | |
8535b2be | 5727 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5728 | if (calldata == NULL) |
5729 | goto out; | |
5730 | calldata->clp = clp; | |
5731 | calldata->arg.one_fs = 0; | |
fce5c838 | 5732 | |
9d12b216 | 5733 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
5734 | msg.rpc_argp = &calldata->arg; |
5735 | msg.rpc_resp = &calldata->res; | |
5736 | task_setup_data.callback_data = calldata; | |
5737 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5738 | if (IS_ERR(task)) { |
fce5c838 | 5739 | status = PTR_ERR(task); |
acf82b85 DC |
5740 | goto out; |
5741 | } | |
c34c32ea AA |
5742 | status = nfs4_wait_for_completion_rpc_task(task); |
5743 | if (status == 0) | |
5744 | status = task->tk_status; | |
fce5c838 | 5745 | rpc_put_task(task); |
acf82b85 | 5746 | return 0; |
fce5c838 RL |
5747 | out: |
5748 | dprintk("<-- %s status=%d\n", __func__, status); | |
5749 | return status; | |
5750 | } | |
b1f69b75 AA |
5751 | |
5752 | static void | |
5753 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5754 | { | |
5755 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5756 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5757 | |
5758 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5759 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5760 | * right now covering the LAYOUTGET we are about to send. | |
5761 | * However, that is not so catastrophic, and there seems | |
5762 | * to be no way to prevent it completely. | |
5763 | */ | |
b1f69b75 | 5764 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 5765 | &lgp->res.seq_res, task)) |
b1f69b75 | 5766 | return; |
cf7d63f1 FI |
5767 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5768 | NFS_I(lgp->args.inode)->layout, | |
5769 | lgp->args.ctx->state)) { | |
5770 | rpc_exit(task, NFS4_OK); | |
5771 | return; | |
5772 | } | |
b1f69b75 AA |
5773 | rpc_call_start(task); |
5774 | } | |
5775 | ||
5776 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5777 | { | |
5778 | struct nfs4_layoutget *lgp = calldata; | |
5779 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5780 | ||
5781 | dprintk("--> %s\n", __func__); | |
5782 | ||
5783 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5784 | return; | |
5785 | ||
5786 | switch (task->tk_status) { | |
5787 | case 0: | |
5788 | break; | |
5789 | case -NFS4ERR_LAYOUTTRYLATER: | |
5790 | case -NFS4ERR_RECALLCONFLICT: | |
5791 | task->tk_status = -NFS4ERR_DELAY; | |
5792 | /* Fall through */ | |
5793 | default: | |
5794 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5795 | rpc_restart_call_prepare(task); | |
5796 | return; | |
5797 | } | |
5798 | } | |
b1f69b75 AA |
5799 | dprintk("<-- %s\n", __func__); |
5800 | } | |
5801 | ||
5802 | static void nfs4_layoutget_release(void *calldata) | |
5803 | { | |
5804 | struct nfs4_layoutget *lgp = calldata; | |
5805 | ||
5806 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5807 | put_nfs_open_context(lgp->args.ctx); |
5808 | kfree(calldata); | |
5809 | dprintk("<-- %s\n", __func__); | |
5810 | } | |
5811 | ||
5812 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5813 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5814 | .rpc_call_done = nfs4_layoutget_done, | |
5815 | .rpc_release = nfs4_layoutget_release, | |
5816 | }; | |
5817 | ||
5818 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5819 | { | |
5820 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5821 | struct rpc_task *task; | |
5822 | struct rpc_message msg = { | |
5823 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5824 | .rpc_argp = &lgp->args, | |
5825 | .rpc_resp = &lgp->res, | |
5826 | }; | |
5827 | struct rpc_task_setup task_setup_data = { | |
5828 | .rpc_client = server->client, | |
5829 | .rpc_message = &msg, | |
5830 | .callback_ops = &nfs4_layoutget_call_ops, | |
5831 | .callback_data = lgp, | |
5832 | .flags = RPC_TASK_ASYNC, | |
5833 | }; | |
5834 | int status = 0; | |
5835 | ||
5836 | dprintk("--> %s\n", __func__); | |
5837 | ||
35124a09 | 5838 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 5839 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 5840 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
5841 | task = rpc_run_task(&task_setup_data); |
5842 | if (IS_ERR(task)) | |
5843 | return PTR_ERR(task); | |
5844 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5845 | if (status == 0) |
5846 | status = task->tk_status; | |
5847 | if (status == 0) | |
5848 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5849 | rpc_put_task(task); |
5850 | dprintk("<-- %s status=%d\n", __func__, status); | |
5851 | return status; | |
5852 | } | |
5853 | ||
cbe82603 BH |
5854 | static void |
5855 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
5856 | { | |
5857 | struct nfs4_layoutreturn *lrp = calldata; | |
5858 | ||
5859 | dprintk("--> %s\n", __func__); | |
5860 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 5861 | &lrp->res.seq_res, task)) |
cbe82603 BH |
5862 | return; |
5863 | rpc_call_start(task); | |
5864 | } | |
5865 | ||
5866 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
5867 | { | |
5868 | struct nfs4_layoutreturn *lrp = calldata; | |
5869 | struct nfs_server *server; | |
a56aaa02 | 5870 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
5871 | |
5872 | dprintk("--> %s\n", __func__); | |
5873 | ||
5874 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
5875 | return; | |
5876 | ||
5877 | server = NFS_SERVER(lrp->args.inode); | |
5878 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 5879 | rpc_restart_call_prepare(task); |
cbe82603 BH |
5880 | return; |
5881 | } | |
a2e1d4f2 | 5882 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 5883 | if (task->tk_status == 0) { |
cbe82603 | 5884 | if (lrp->res.lrs_present) { |
cbe82603 | 5885 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
5886 | } else |
5887 | BUG_ON(!list_empty(&lo->plh_segs)); | |
5888 | } | |
a2e1d4f2 FI |
5889 | lo->plh_block_lgets--; |
5890 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
5891 | dprintk("<-- %s\n", __func__); |
5892 | } | |
5893 | ||
5894 | static void nfs4_layoutreturn_release(void *calldata) | |
5895 | { | |
5896 | struct nfs4_layoutreturn *lrp = calldata; | |
5897 | ||
5898 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 5899 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
5900 | kfree(calldata); |
5901 | dprintk("<-- %s\n", __func__); | |
5902 | } | |
5903 | ||
5904 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
5905 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
5906 | .rpc_call_done = nfs4_layoutreturn_done, | |
5907 | .rpc_release = nfs4_layoutreturn_release, | |
5908 | }; | |
5909 | ||
5910 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
5911 | { | |
5912 | struct rpc_task *task; | |
5913 | struct rpc_message msg = { | |
5914 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
5915 | .rpc_argp = &lrp->args, | |
5916 | .rpc_resp = &lrp->res, | |
5917 | }; | |
5918 | struct rpc_task_setup task_setup_data = { | |
5919 | .rpc_client = lrp->clp->cl_rpcclient, | |
5920 | .rpc_message = &msg, | |
5921 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
5922 | .callback_data = lrp, | |
5923 | }; | |
5924 | int status; | |
5925 | ||
5926 | dprintk("--> %s\n", __func__); | |
9d12b216 | 5927 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
5928 | task = rpc_run_task(&task_setup_data); |
5929 | if (IS_ERR(task)) | |
5930 | return PTR_ERR(task); | |
5931 | status = task->tk_status; | |
5932 | dprintk("<-- %s status=%d\n", __func__, status); | |
5933 | rpc_put_task(task); | |
5934 | return status; | |
5935 | } | |
5936 | ||
7f11d8d3 AA |
5937 | /* |
5938 | * Retrieve the list of Data Server devices from the MDS. | |
5939 | */ | |
5940 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
5941 | const struct nfs_fh *fh, | |
5942 | struct pnfs_devicelist *devlist) | |
5943 | { | |
5944 | struct nfs4_getdevicelist_args args = { | |
5945 | .fh = fh, | |
5946 | .layoutclass = server->pnfs_curr_ld->id, | |
5947 | }; | |
5948 | struct nfs4_getdevicelist_res res = { | |
5949 | .devlist = devlist, | |
5950 | }; | |
5951 | struct rpc_message msg = { | |
5952 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
5953 | .rpc_argp = &args, | |
5954 | .rpc_resp = &res, | |
5955 | }; | |
5956 | int status; | |
5957 | ||
5958 | dprintk("--> %s\n", __func__); | |
5959 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
5960 | &res.seq_res, 0); | |
5961 | dprintk("<-- %s status=%d\n", __func__, status); | |
5962 | return status; | |
5963 | } | |
5964 | ||
5965 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
5966 | const struct nfs_fh *fh, | |
5967 | struct pnfs_devicelist *devlist) | |
5968 | { | |
5969 | struct nfs4_exception exception = { }; | |
5970 | int err; | |
5971 | ||
5972 | do { | |
5973 | err = nfs4_handle_exception(server, | |
5974 | _nfs4_getdevicelist(server, fh, devlist), | |
5975 | &exception); | |
5976 | } while (exception.retry); | |
5977 | ||
5978 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
5979 | err, devlist->num_devs); | |
5980 | ||
5981 | return err; | |
5982 | } | |
5983 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
5984 | ||
b1f69b75 AA |
5985 | static int |
5986 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5987 | { | |
5988 | struct nfs4_getdeviceinfo_args args = { | |
5989 | .pdev = pdev, | |
5990 | }; | |
5991 | struct nfs4_getdeviceinfo_res res = { | |
5992 | .pdev = pdev, | |
5993 | }; | |
5994 | struct rpc_message msg = { | |
5995 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5996 | .rpc_argp = &args, | |
5997 | .rpc_resp = &res, | |
5998 | }; | |
5999 | int status; | |
6000 | ||
6001 | dprintk("--> %s\n", __func__); | |
7c513058 | 6002 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6003 | dprintk("<-- %s status=%d\n", __func__, status); |
6004 | ||
6005 | return status; | |
6006 | } | |
6007 | ||
6008 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6009 | { | |
6010 | struct nfs4_exception exception = { }; | |
6011 | int err; | |
6012 | ||
6013 | do { | |
6014 | err = nfs4_handle_exception(server, | |
6015 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6016 | &exception); | |
6017 | } while (exception.retry); | |
6018 | return err; | |
6019 | } | |
6020 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6021 | ||
863a3c6c AA |
6022 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6023 | { | |
6024 | struct nfs4_layoutcommit_data *data = calldata; | |
6025 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6026 | ||
6027 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6028 | &data->res.seq_res, task)) |
863a3c6c AA |
6029 | return; |
6030 | rpc_call_start(task); | |
6031 | } | |
6032 | ||
6033 | static void | |
6034 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6035 | { | |
6036 | struct nfs4_layoutcommit_data *data = calldata; | |
6037 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6038 | ||
6039 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6040 | return; | |
6041 | ||
6042 | switch (task->tk_status) { /* Just ignore these failures */ | |
6043 | case NFS4ERR_DELEG_REVOKED: /* layout was recalled */ | |
6044 | case NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6045 | case NFS4ERR_BADLAYOUT: /* no layout */ | |
6046 | case NFS4ERR_GRACE: /* loca_recalim always false */ | |
6047 | task->tk_status = 0; | |
6048 | } | |
6049 | ||
6050 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6051 | rpc_restart_call_prepare(task); |
863a3c6c AA |
6052 | return; |
6053 | } | |
6054 | ||
6055 | if (task->tk_status == 0) | |
6056 | nfs_post_op_update_inode_force_wcc(data->args.inode, | |
6057 | data->res.fattr); | |
6058 | } | |
6059 | ||
6060 | static void nfs4_layoutcommit_release(void *calldata) | |
6061 | { | |
6062 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6063 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6064 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6065 | |
db29c089 | 6066 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6067 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6068 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6069 | list_del_init(&lseg->pls_lc_list); | |
6070 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6071 | &lseg->pls_flags)) | |
6072 | put_lseg(lseg); | |
6073 | } | |
92407e75 PT |
6074 | |
6075 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6076 | smp_mb__after_clear_bit(); | |
6077 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6078 | ||
863a3c6c AA |
6079 | put_rpccred(data->cred); |
6080 | kfree(data); | |
6081 | } | |
6082 | ||
6083 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6084 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6085 | .rpc_call_done = nfs4_layoutcommit_done, | |
6086 | .rpc_release = nfs4_layoutcommit_release, | |
6087 | }; | |
6088 | ||
6089 | int | |
ef311537 | 6090 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6091 | { |
6092 | struct rpc_message msg = { | |
6093 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6094 | .rpc_argp = &data->args, | |
6095 | .rpc_resp = &data->res, | |
6096 | .rpc_cred = data->cred, | |
6097 | }; | |
6098 | struct rpc_task_setup task_setup_data = { | |
6099 | .task = &data->task, | |
6100 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6101 | .rpc_message = &msg, | |
6102 | .callback_ops = &nfs4_layoutcommit_ops, | |
6103 | .callback_data = data, | |
6104 | .flags = RPC_TASK_ASYNC, | |
6105 | }; | |
6106 | struct rpc_task *task; | |
6107 | int status = 0; | |
6108 | ||
6109 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6110 | "lbw: %llu inode %lu\n", | |
6111 | data->task.tk_pid, sync, | |
6112 | data->args.lastbytewritten, | |
6113 | data->args.inode->i_ino); | |
6114 | ||
9d12b216 | 6115 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6116 | task = rpc_run_task(&task_setup_data); |
6117 | if (IS_ERR(task)) | |
6118 | return PTR_ERR(task); | |
ef311537 | 6119 | if (sync == false) |
863a3c6c AA |
6120 | goto out; |
6121 | status = nfs4_wait_for_completion_rpc_task(task); | |
6122 | if (status != 0) | |
6123 | goto out; | |
6124 | status = task->tk_status; | |
6125 | out: | |
6126 | dprintk("%s: status %d\n", __func__, status); | |
6127 | rpc_put_task(task); | |
6128 | return status; | |
6129 | } | |
fca78d6d BS |
6130 | |
6131 | static int | |
6132 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6133 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6134 | { | |
6135 | struct nfs41_secinfo_no_name_args args = { | |
6136 | .style = SECINFO_STYLE_CURRENT_FH, | |
6137 | }; | |
6138 | struct nfs4_secinfo_res res = { | |
6139 | .flavors = flavors, | |
6140 | }; | |
6141 | struct rpc_message msg = { | |
6142 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6143 | .rpc_argp = &args, | |
6144 | .rpc_resp = &res, | |
6145 | }; | |
6146 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6147 | } | |
6148 | ||
6149 | static int | |
6150 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6151 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6152 | { | |
6153 | struct nfs4_exception exception = { }; | |
6154 | int err; | |
6155 | do { | |
6156 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6157 | switch (err) { | |
6158 | case 0: | |
6159 | case -NFS4ERR_WRONGSEC: | |
6160 | case -NFS4ERR_NOTSUPP: | |
6161 | break; | |
6162 | default: | |
6163 | err = nfs4_handle_exception(server, err, &exception); | |
6164 | } | |
6165 | } while (exception.retry); | |
6166 | return err; | |
6167 | } | |
6168 | ||
6169 | static int | |
6170 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6171 | struct nfs_fsinfo *info) | |
6172 | { | |
6173 | int err; | |
6174 | struct page *page; | |
6175 | rpc_authflavor_t flavor; | |
6176 | struct nfs4_secinfo_flavors *flavors; | |
6177 | ||
6178 | page = alloc_page(GFP_KERNEL); | |
6179 | if (!page) { | |
6180 | err = -ENOMEM; | |
6181 | goto out; | |
6182 | } | |
6183 | ||
6184 | flavors = page_address(page); | |
6185 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6186 | ||
6187 | /* | |
6188 | * Fall back on "guess and check" method if | |
6189 | * the server doesn't support SECINFO_NO_NAME | |
6190 | */ | |
6191 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6192 | err = nfs4_find_root_sec(server, fhandle, info); | |
6193 | goto out_freepage; | |
6194 | } | |
6195 | if (err) | |
6196 | goto out_freepage; | |
6197 | ||
6198 | flavor = nfs_find_best_sec(flavors); | |
6199 | if (err == 0) | |
6200 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6201 | ||
6202 | out_freepage: | |
6203 | put_page(page); | |
6204 | if (err == -EACCES) | |
6205 | return -EPERM; | |
6206 | out: | |
6207 | return err; | |
6208 | } | |
1cab0652 BS |
6209 | |
6210 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 | 6211 | { |
1cab0652 | 6212 | int status; |
7d974794 | 6213 | struct nfs41_test_stateid_args args = { |
1cab0652 | 6214 | .stateid = stateid, |
7d974794 BS |
6215 | }; |
6216 | struct nfs41_test_stateid_res res; | |
6217 | struct rpc_message msg = { | |
6218 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6219 | .rpc_argp = &args, | |
6220 | .rpc_resp = &res, | |
6221 | }; | |
1cab0652 | 6222 | |
9d12b216 | 6223 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 BS |
6224 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
6225 | ||
6226 | if (status == NFS_OK) | |
6227 | return res.status; | |
6228 | return status; | |
7d974794 BS |
6229 | } |
6230 | ||
1cab0652 | 6231 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6232 | { |
6233 | struct nfs4_exception exception = { }; | |
6234 | int err; | |
6235 | do { | |
6236 | err = nfs4_handle_exception(server, | |
1cab0652 | 6237 | _nfs41_test_stateid(server, stateid), |
7d974794 BS |
6238 | &exception); |
6239 | } while (exception.retry); | |
6240 | return err; | |
6241 | } | |
9aeda35f | 6242 | |
1cab0652 | 6243 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6244 | { |
9aeda35f | 6245 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6246 | .stateid = stateid, |
9aeda35f BS |
6247 | }; |
6248 | struct nfs41_free_stateid_res res; | |
6249 | struct rpc_message msg = { | |
6250 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6251 | .rpc_argp = &args, | |
6252 | .rpc_resp = &res, | |
6253 | }; | |
6254 | ||
9d12b216 TM |
6255 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
6256 | return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); | |
9aeda35f BS |
6257 | } |
6258 | ||
1cab0652 | 6259 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6260 | { |
6261 | struct nfs4_exception exception = { }; | |
6262 | int err; | |
6263 | do { | |
6264 | err = nfs4_handle_exception(server, | |
1cab0652 | 6265 | _nfs4_free_stateid(server, stateid), |
9aeda35f BS |
6266 | &exception); |
6267 | } while (exception.retry); | |
6268 | return err; | |
6269 | } | |
36281caa TM |
6270 | |
6271 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6272 | const nfs4_stateid *s2) | |
6273 | { | |
2d2f24ad | 6274 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6275 | return false; |
6276 | ||
2d2f24ad | 6277 | if (s1->seqid == s2->seqid) |
36281caa | 6278 | return true; |
2d2f24ad | 6279 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6280 | return true; |
6281 | ||
6282 | return false; | |
6283 | } | |
6284 | ||
557134a3 AA |
6285 | #endif /* CONFIG_NFS_V4_1 */ |
6286 | ||
36281caa TM |
6287 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6288 | const nfs4_stateid *s2) | |
6289 | { | |
f597c537 | 6290 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6291 | } |
6292 | ||
6293 | ||
591d71cb | 6294 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6295 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6296 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6297 | .recover_open = nfs4_open_reclaim, |
6298 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6299 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6300 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6301 | }; |
6302 | ||
591d71cb AA |
6303 | #if defined(CONFIG_NFS_V4_1) |
6304 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
6305 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
6306 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6307 | .recover_open = nfs4_open_reclaim, | |
6308 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6309 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6310 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6311 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6312 | }; |
6313 | #endif /* CONFIG_NFS_V4_1 */ | |
6314 | ||
6315 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
6316 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
6317 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6318 | .recover_open = nfs4_open_expired, | |
6319 | .recover_lock = nfs4_lock_expired, | |
6320 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6321 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6322 | }; |
6323 | ||
6324 | #if defined(CONFIG_NFS_V4_1) | |
6325 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 6326 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6327 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6328 | .recover_open = nfs41_open_expired, |
6329 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6330 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6331 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6332 | }; |
591d71cb | 6333 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6334 | |
29fba38b BH |
6335 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
6336 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 6337 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6338 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6339 | }; |
6340 | ||
6341 | #if defined(CONFIG_NFS_V4_1) | |
6342 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
6343 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 6344 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6345 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6346 | }; |
6347 | #endif | |
6348 | ||
97dc1359 TM |
6349 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6350 | .minor_version = 0, | |
6351 | .call_sync = _nfs4_call_sync, | |
36281caa | 6352 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6353 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6354 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6355 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6356 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6357 | }; |
6358 | ||
6359 | #if defined(CONFIG_NFS_V4_1) | |
6360 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6361 | .minor_version = 1, | |
6362 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 6363 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6364 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6365 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6366 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6367 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6368 | }; |
6369 | #endif | |
6370 | ||
97dc1359 TM |
6371 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6372 | [0] = &nfs_v4_0_minor_ops, | |
6373 | #if defined(CONFIG_NFS_V4_1) | |
6374 | [1] = &nfs_v4_1_minor_ops, | |
6375 | #endif | |
6376 | }; | |
6377 | ||
92e1d5be | 6378 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6379 | .permission = nfs_permission, |
6380 | .getattr = nfs_getattr, | |
6381 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6382 | .getxattr = generic_getxattr, |
6383 | .setxattr = generic_setxattr, | |
6384 | .listxattr = generic_listxattr, | |
6385 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6386 | }; |
6387 | ||
509de811 | 6388 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6389 | .version = 4, /* protocol version */ |
6390 | .dentry_ops = &nfs4_dentry_operations, | |
6391 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6392 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6393 | .file_ops = &nfs4_file_operations, |
1da177e4 LT |
6394 | .getroot = nfs4_proc_get_root, |
6395 | .getattr = nfs4_proc_getattr, | |
6396 | .setattr = nfs4_proc_setattr, | |
6397 | .lookup = nfs4_proc_lookup, | |
6398 | .access = nfs4_proc_access, | |
6399 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6400 | .create = nfs4_proc_create, |
6401 | .remove = nfs4_proc_remove, | |
6402 | .unlink_setup = nfs4_proc_unlink_setup, | |
6403 | .unlink_done = nfs4_proc_unlink_done, | |
6404 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
6405 | .rename_setup = nfs4_proc_rename_setup, |
6406 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
6407 | .link = nfs4_proc_link, |
6408 | .symlink = nfs4_proc_symlink, | |
6409 | .mkdir = nfs4_proc_mkdir, | |
6410 | .rmdir = nfs4_proc_remove, | |
6411 | .readdir = nfs4_proc_readdir, | |
6412 | .mknod = nfs4_proc_mknod, | |
6413 | .statfs = nfs4_proc_statfs, | |
6414 | .fsinfo = nfs4_proc_fsinfo, | |
6415 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6416 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6417 | .decode_dirent = nfs4_decode_dirent, |
6418 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 6419 | .read_done = nfs4_read_done, |
1da177e4 | 6420 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 6421 | .write_done = nfs4_write_done, |
1da177e4 | 6422 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 6423 | .commit_done = nfs4_commit_done, |
1da177e4 | 6424 | .lock = nfs4_proc_lock, |
e50a1c2e | 6425 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6426 | .close_context = nfs4_close_context, |
2b484297 | 6427 | .open_context = nfs4_atomic_open, |
45a52a02 | 6428 | .init_client = nfs4_init_client, |
5a5ea0d4 | 6429 | .secinfo = nfs4_proc_secinfo, |
1da177e4 LT |
6430 | }; |
6431 | ||
64c2ce8b AK |
6432 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6433 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6434 | .list = nfs4_xattr_list_nfs4_acl, | |
6435 | .get = nfs4_xattr_get_nfs4_acl, | |
6436 | .set = nfs4_xattr_set_nfs4_acl, | |
6437 | }; | |
6438 | ||
6439 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6440 | &nfs4_xattr_nfs4_acl_handler, | |
6441 | NULL | |
6442 | }; | |
6443 | ||
ef159e91 TM |
6444 | module_param(max_session_slots, ushort, 0644); |
6445 | MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 " | |
6446 | "requests the client will negotiate"); | |
6447 | ||
1da177e4 LT |
6448 | /* |
6449 | * Local variables: | |
6450 | * c-basic-offset: 8 | |
6451 | * End: | |
6452 | */ |