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) { |
cd93710e | 839 | __be32 verf[2]; |
d77d76ff | 840 | |
e56e0b78 TM |
841 | p->o_arg.u.attrs = &p->attrs; |
842 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
843 | |
844 | verf[0] = jiffies; | |
845 | verf[1] = current->pid; | |
846 | memcpy(p->o_arg.u.verifier.data, verf, | |
847 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 848 | } |
cdd4e68b TM |
849 | p->c_arg.fh = &p->o_res.fh; |
850 | p->c_arg.stateid = &p->o_res.stateid; | |
851 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 852 | nfs4_init_opendata_res(p); |
c6d00e63 | 853 | kref_init(&p->kref); |
e56e0b78 TM |
854 | return p; |
855 | err_free: | |
856 | kfree(p); | |
857 | err: | |
858 | dput(parent); | |
859 | return NULL; | |
860 | } | |
861 | ||
c6d00e63 | 862 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 863 | { |
c6d00e63 TM |
864 | struct nfs4_opendata *p = container_of(kref, |
865 | struct nfs4_opendata, kref); | |
82a2c1b7 | 866 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
867 | |
868 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
869 | if (p->state != NULL) |
870 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
871 | nfs4_put_state_owner(p->owner); |
872 | dput(p->dir); | |
82a2c1b7 AV |
873 | dput(p->dentry); |
874 | nfs_sb_deactive(sb); | |
6926afd1 | 875 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
876 | kfree(p); |
877 | } | |
878 | ||
879 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
880 | { | |
881 | if (p != NULL) | |
882 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
883 | } |
884 | ||
06f814a3 TM |
885 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
886 | { | |
06f814a3 TM |
887 | int ret; |
888 | ||
06f814a3 | 889 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
890 | return ret; |
891 | } | |
892 | ||
dc0b027d | 893 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
894 | { |
895 | int ret = 0; | |
dc0b027d | 896 | |
536e43d1 | 897 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
898 | goto out; |
899 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 900 | case FMODE_READ: |
88069f77 TM |
901 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
902 | && state->n_rdonly != 0; | |
6ee41268 TM |
903 | break; |
904 | case FMODE_WRITE: | |
88069f77 TM |
905 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
906 | && state->n_wronly != 0; | |
6ee41268 TM |
907 | break; |
908 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
909 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
910 | && state->n_rdwr != 0; | |
6ee41268 | 911 | } |
dc0b027d | 912 | out: |
6ee41268 TM |
913 | return ret; |
914 | } | |
915 | ||
dc0b027d | 916 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 917 | { |
652f89f6 TM |
918 | if (delegation == NULL) |
919 | return 0; | |
dc0b027d | 920 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 921 | return 0; |
15c831bf | 922 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 923 | return 0; |
b7391f44 | 924 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
925 | return 1; |
926 | } | |
927 | ||
dc0b027d | 928 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 929 | { |
dc0b027d | 930 | switch (fmode) { |
e7616923 TM |
931 | case FMODE_WRITE: |
932 | state->n_wronly++; | |
933 | break; | |
934 | case FMODE_READ: | |
935 | state->n_rdonly++; | |
936 | break; | |
937 | case FMODE_READ|FMODE_WRITE: | |
938 | state->n_rdwr++; | |
939 | } | |
dc0b027d | 940 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
941 | } |
942 | ||
dc0b027d | 943 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
944 | { |
945 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
946 | nfs4_stateid_copy(&state->stateid, stateid); |
947 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 948 | switch (fmode) { |
003707c7 TM |
949 | case FMODE_READ: |
950 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
951 | break; | |
952 | case FMODE_WRITE: | |
953 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
954 | break; | |
955 | case FMODE_READ|FMODE_WRITE: | |
956 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
957 | } | |
e7616923 TM |
958 | } |
959 | ||
dc0b027d | 960 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 961 | { |
8bda4e4c | 962 | write_seqlock(&state->seqlock); |
dc0b027d | 963 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 964 | write_sequnlock(&state->seqlock); |
003707c7 TM |
965 | } |
966 | ||
dc0b027d | 967 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 968 | { |
8bda4e4c TM |
969 | /* |
970 | * Protect the call to nfs4_state_set_mode_locked and | |
971 | * serialise the stateid update | |
972 | */ | |
973 | write_seqlock(&state->seqlock); | |
003707c7 | 974 | if (deleg_stateid != NULL) { |
f597c537 | 975 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
976 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
977 | } | |
978 | if (open_stateid != NULL) | |
dc0b027d | 979 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
980 | write_sequnlock(&state->seqlock); |
981 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 982 | update_open_stateflags(state, fmode); |
ec073428 | 983 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
984 | } |
985 | ||
dc0b027d | 986 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
987 | { |
988 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
989 | struct nfs_delegation *deleg_cur; | |
990 | int ret = 0; | |
991 | ||
dc0b027d | 992 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
993 | |
994 | rcu_read_lock(); | |
995 | deleg_cur = rcu_dereference(nfsi->delegation); | |
996 | if (deleg_cur == NULL) | |
997 | goto no_delegation; | |
998 | ||
999 | spin_lock(&deleg_cur->lock); | |
1000 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 1001 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1002 | goto no_delegation_unlock; |
1003 | ||
1004 | if (delegation == NULL) | |
1005 | delegation = &deleg_cur->stateid; | |
f597c537 | 1006 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1007 | goto no_delegation_unlock; |
1008 | ||
b7391f44 | 1009 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1010 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1011 | ret = 1; |
1012 | no_delegation_unlock: | |
1013 | spin_unlock(&deleg_cur->lock); | |
1014 | no_delegation: | |
1015 | rcu_read_unlock(); | |
1016 | ||
1017 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1018 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1019 | ret = 1; |
1020 | } | |
1021 | ||
1022 | return ret; | |
1023 | } | |
1024 | ||
1025 | ||
dc0b027d | 1026 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1027 | { |
1028 | struct nfs_delegation *delegation; | |
1029 | ||
1030 | rcu_read_lock(); | |
1031 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1032 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1033 | rcu_read_unlock(); |
1034 | return; | |
1035 | } | |
1036 | rcu_read_unlock(); | |
1037 | nfs_inode_return_delegation(inode); | |
1038 | } | |
1039 | ||
6ee41268 | 1040 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1041 | { |
1042 | struct nfs4_state *state = opendata->state; | |
1043 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1044 | struct nfs_delegation *delegation; | |
536e43d1 | 1045 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1046 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1047 | nfs4_stateid stateid; |
1048 | int ret = -EAGAIN; | |
1049 | ||
aac00a8d | 1050 | for (;;) { |
dc0b027d | 1051 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1052 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1053 | if (can_open_cached(state, fmode, open_mode)) { |
1054 | update_open_stateflags(state, fmode); | |
6ee41268 | 1055 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1056 | goto out_return_state; |
1057 | } | |
1058 | spin_unlock(&state->owner->so_lock); | |
1059 | } | |
34310430 TM |
1060 | rcu_read_lock(); |
1061 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1062 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1063 | rcu_read_unlock(); |
aac00a8d | 1064 | break; |
34310430 | 1065 | } |
aac00a8d | 1066 | /* Save the delegation */ |
f597c537 | 1067 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1068 | rcu_read_unlock(); |
af22f94a | 1069 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1070 | if (ret != 0) |
1071 | goto out; | |
1072 | ret = -EAGAIN; | |
34310430 TM |
1073 | |
1074 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1075 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1076 | goto out_return_state; |
aac00a8d | 1077 | } |
aac00a8d TM |
1078 | out: |
1079 | return ERR_PTR(ret); | |
1080 | out_return_state: | |
1081 | atomic_inc(&state->count); | |
1082 | return state; | |
1083 | } | |
1084 | ||
24ac23ab TM |
1085 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1086 | { | |
1087 | struct inode *inode; | |
1088 | struct nfs4_state *state = NULL; | |
003707c7 | 1089 | struct nfs_delegation *delegation; |
1b370bc2 | 1090 | int ret; |
24ac23ab | 1091 | |
aac00a8d | 1092 | if (!data->rpc_done) { |
6ee41268 | 1093 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1094 | goto out; |
1095 | } | |
1096 | ||
1b370bc2 | 1097 | ret = -EAGAIN; |
24ac23ab | 1098 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1099 | goto err; |
24ac23ab | 1100 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1101 | ret = PTR_ERR(inode); |
03f28e3a | 1102 | if (IS_ERR(inode)) |
1b370bc2 TM |
1103 | goto err; |
1104 | ret = -ENOMEM; | |
24ac23ab TM |
1105 | state = nfs4_get_open_state(inode, data->owner); |
1106 | if (state == NULL) | |
1b370bc2 | 1107 | goto err_put_inode; |
549d6ed5 | 1108 | if (data->o_res.delegation_type != 0) { |
4e0038b6 | 1109 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; |
549d6ed5 TM |
1110 | int delegation_flags = 0; |
1111 | ||
003707c7 TM |
1112 | rcu_read_lock(); |
1113 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1114 | if (delegation) | |
1115 | delegation_flags = delegation->flags; | |
1116 | rcu_read_unlock(); | |
652f89f6 TM |
1117 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { |
1118 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1119 | "returning a delegation for " | |
1120 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
4e0038b6 | 1121 | clp->cl_hostname); |
652f89f6 | 1122 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1123 | nfs_inode_set_delegation(state->inode, |
1124 | data->owner->so_cred, | |
1125 | &data->o_res); | |
1126 | else | |
1127 | nfs_inode_reclaim_delegation(state->inode, | |
1128 | data->owner->so_cred, | |
1129 | &data->o_res); | |
1130 | } | |
34310430 TM |
1131 | |
1132 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1133 | data->o_arg.fmode); |
24ac23ab | 1134 | iput(inode); |
aac00a8d | 1135 | out: |
24ac23ab | 1136 | return state; |
1b370bc2 TM |
1137 | err_put_inode: |
1138 | iput(inode); | |
1139 | err: | |
1140 | return ERR_PTR(ret); | |
24ac23ab TM |
1141 | } |
1142 | ||
864472e9 TM |
1143 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1144 | { | |
1145 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1146 | struct nfs_open_context *ctx; | |
1147 | ||
1148 | spin_lock(&state->inode->i_lock); | |
1149 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1150 | if (ctx->state != state) | |
1151 | continue; | |
1152 | get_nfs_open_context(ctx); | |
1153 | spin_unlock(&state->inode->i_lock); | |
1154 | return ctx; | |
1155 | } | |
1156 | spin_unlock(&state->inode->i_lock); | |
1157 | return ERR_PTR(-ENOENT); | |
1158 | } | |
1159 | ||
6f220ed5 TM |
1160 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1161 | { | |
1162 | struct nfs4_opendata *opendata; | |
1163 | ||
3d4ff43d | 1164 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1165 | if (opendata == NULL) |
1166 | return ERR_PTR(-ENOMEM); | |
1167 | opendata->state = state; | |
1168 | atomic_inc(&state->count); | |
1169 | return opendata; | |
1170 | } | |
1171 | ||
dc0b027d | 1172 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1173 | { |
2ced46c2 | 1174 | struct nfs4_state *newstate; |
864472e9 TM |
1175 | int ret; |
1176 | ||
dc0b027d TM |
1177 | opendata->o_arg.open_flags = 0; |
1178 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1179 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1180 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1181 | nfs4_init_opendata_res(opendata); | |
b257957e | 1182 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1183 | if (ret != 0) |
1184 | return ret; | |
2ced46c2 | 1185 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1186 | if (IS_ERR(newstate)) |
1187 | return PTR_ERR(newstate); | |
643168c2 | 1188 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1189 | *res = newstate; |
864472e9 TM |
1190 | return 0; |
1191 | } | |
1192 | ||
1193 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1194 | { | |
864472e9 | 1195 | struct nfs4_state *newstate; |
864472e9 TM |
1196 | int ret; |
1197 | ||
1198 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1199 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1200 | smp_rmb(); |
1201 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1202 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1203 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1204 | if (ret != 0) |
1205 | return ret; | |
2ced46c2 TM |
1206 | if (newstate != state) |
1207 | return -ESTALE; | |
864472e9 TM |
1208 | } |
1209 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1210 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1211 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1212 | if (ret != 0) |
1213 | return ret; | |
2ced46c2 TM |
1214 | if (newstate != state) |
1215 | return -ESTALE; | |
864472e9 TM |
1216 | } |
1217 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1218 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1219 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1220 | if (ret != 0) |
1221 | return ret; | |
2ced46c2 TM |
1222 | if (newstate != state) |
1223 | return -ESTALE; | |
864472e9 | 1224 | } |
1ac7e2fd TM |
1225 | /* |
1226 | * We may have performed cached opens for all three recoveries. | |
1227 | * Check if we need to update the current stateid. | |
1228 | */ | |
1229 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1230 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1231 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1232 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1233 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1234 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1235 | } |
864472e9 TM |
1236 | return 0; |
1237 | } | |
1238 | ||
1da177e4 LT |
1239 | /* |
1240 | * OPEN_RECLAIM: | |
1241 | * reclaim state on the server after a reboot. | |
1da177e4 | 1242 | */ |
539cd03a | 1243 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1244 | { |
1ac7e2fd | 1245 | struct nfs_delegation *delegation; |
864472e9 | 1246 | struct nfs4_opendata *opendata; |
dc0b027d | 1247 | fmode_t delegation_type = 0; |
1da177e4 LT |
1248 | int status; |
1249 | ||
6f220ed5 TM |
1250 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1251 | if (IS_ERR(opendata)) | |
1252 | return PTR_ERR(opendata); | |
864472e9 TM |
1253 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1254 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1255 | rcu_read_lock(); |
1256 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1257 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1258 | delegation_type = delegation->type; |
1ac7e2fd | 1259 | rcu_read_unlock(); |
864472e9 TM |
1260 | opendata->o_arg.u.delegation_type = delegation_type; |
1261 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1262 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1263 | return status; |
1264 | } | |
1265 | ||
539cd03a | 1266 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1267 | { |
1268 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1269 | struct nfs4_exception exception = { }; | |
1270 | int err; | |
1271 | do { | |
539cd03a | 1272 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1273 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1274 | break; |
1275 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1276 | } while (exception.retry); |
1277 | return err; | |
1278 | } | |
1279 | ||
864472e9 TM |
1280 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1281 | { | |
1282 | struct nfs_open_context *ctx; | |
1283 | int ret; | |
1284 | ||
1285 | ctx = nfs4_state_find_open_context(state); | |
1286 | if (IS_ERR(ctx)) | |
1287 | return PTR_ERR(ctx); | |
539cd03a | 1288 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1289 | put_nfs_open_context(ctx); |
1290 | return ret; | |
1291 | } | |
1292 | ||
13437e12 | 1293 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1294 | { |
e56e0b78 | 1295 | struct nfs4_opendata *opendata; |
864472e9 | 1296 | int ret; |
1da177e4 | 1297 | |
6f220ed5 TM |
1298 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1299 | if (IS_ERR(opendata)) | |
1300 | return PTR_ERR(opendata); | |
e56e0b78 | 1301 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1302 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1303 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1304 | nfs4_opendata_put(opendata); |
864472e9 | 1305 | return ret; |
1da177e4 LT |
1306 | } |
1307 | ||
13437e12 | 1308 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1309 | { |
1310 | struct nfs4_exception exception = { }; | |
539cd03a | 1311 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1312 | int err; |
1313 | do { | |
13437e12 | 1314 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1315 | switch (err) { |
1316 | case 0: | |
965b5d67 TM |
1317 | case -ENOENT: |
1318 | case -ESTALE: | |
1319 | goto out; | |
bcfa49f6 RL |
1320 | case -NFS4ERR_BADSESSION: |
1321 | case -NFS4ERR_BADSLOT: | |
1322 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1323 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1324 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1325 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1326 | goto out; |
1da177e4 LT |
1327 | case -NFS4ERR_STALE_CLIENTID: |
1328 | case -NFS4ERR_STALE_STATEID: | |
1329 | case -NFS4ERR_EXPIRED: | |
1330 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1331 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1332 | goto out; |
1333 | case -ERESTARTSYS: | |
1334 | /* | |
1335 | * The show must go on: exit, but mark the | |
1336 | * stateid as needing recovery. | |
1337 | */ | |
a1d0b5ee | 1338 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1339 | case -NFS4ERR_ADMIN_REVOKED: |
1340 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1341 | nfs_inode_find_state_and_recover(state->inode, |
1342 | stateid); | |
0400a6b0 | 1343 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1344 | case -EKEYEXPIRED: |
1345 | /* | |
1346 | * User RPCSEC_GSS context has expired. | |
1347 | * We cannot recover this stateid now, so | |
1348 | * skip it and allow recovery thread to | |
1349 | * proceed. | |
1350 | */ | |
965b5d67 TM |
1351 | case -ENOMEM: |
1352 | err = 0; | |
1353 | goto out; | |
1da177e4 LT |
1354 | } |
1355 | err = nfs4_handle_exception(server, err, &exception); | |
1356 | } while (exception.retry); | |
965b5d67 | 1357 | out: |
1da177e4 LT |
1358 | return err; |
1359 | } | |
1360 | ||
cdd4e68b TM |
1361 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1362 | { | |
1363 | struct nfs4_opendata *data = calldata; | |
1364 | ||
1365 | data->rpc_status = task->tk_status; | |
26e976a8 | 1366 | if (data->rpc_status == 0) { |
f597c537 | 1367 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1368 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1369 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1370 | data->rpc_done = 1; |
26e976a8 | 1371 | } |
cdd4e68b TM |
1372 | } |
1373 | ||
1374 | static void nfs4_open_confirm_release(void *calldata) | |
1375 | { | |
1376 | struct nfs4_opendata *data = calldata; | |
1377 | struct nfs4_state *state = NULL; | |
1378 | ||
1379 | /* If this request hasn't been cancelled, do nothing */ | |
1380 | if (data->cancelled == 0) | |
1381 | goto out_free; | |
1382 | /* In case of error, no cleanup! */ | |
3e309914 | 1383 | if (!data->rpc_done) |
cdd4e68b | 1384 | goto out_free; |
cdd4e68b | 1385 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1386 | if (!IS_ERR(state)) |
643168c2 | 1387 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1388 | out_free: |
c6d00e63 | 1389 | nfs4_opendata_put(data); |
cdd4e68b TM |
1390 | } |
1391 | ||
1392 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1393 | .rpc_call_done = nfs4_open_confirm_done, |
1394 | .rpc_release = nfs4_open_confirm_release, | |
1395 | }; | |
1396 | ||
1397 | /* | |
1398 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1399 | */ | |
1400 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1401 | { | |
1402 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1403 | struct rpc_task *task; | |
5138fde0 TM |
1404 | struct rpc_message msg = { |
1405 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1406 | .rpc_argp = &data->c_arg, | |
1407 | .rpc_resp = &data->c_res, | |
1408 | .rpc_cred = data->owner->so_cred, | |
1409 | }; | |
c970aa85 TM |
1410 | struct rpc_task_setup task_setup_data = { |
1411 | .rpc_client = server->client, | |
5138fde0 | 1412 | .rpc_message = &msg, |
c970aa85 TM |
1413 | .callback_ops = &nfs4_open_confirm_ops, |
1414 | .callback_data = data, | |
101070ca | 1415 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1416 | .flags = RPC_TASK_ASYNC, |
1417 | }; | |
1da177e4 LT |
1418 | int status; |
1419 | ||
c6d00e63 | 1420 | kref_get(&data->kref); |
3e309914 TM |
1421 | data->rpc_done = 0; |
1422 | data->rpc_status = 0; | |
5138fde0 | 1423 | data->timestamp = jiffies; |
c970aa85 | 1424 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1425 | if (IS_ERR(task)) |
cdd4e68b | 1426 | return PTR_ERR(task); |
cdd4e68b TM |
1427 | status = nfs4_wait_for_completion_rpc_task(task); |
1428 | if (status != 0) { | |
1429 | data->cancelled = 1; | |
1430 | smp_wmb(); | |
1431 | } else | |
1432 | status = data->rpc_status; | |
e6b3c4db | 1433 | rpc_put_task(task); |
1da177e4 LT |
1434 | return status; |
1435 | } | |
1436 | ||
24ac23ab | 1437 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1438 | { |
24ac23ab TM |
1439 | struct nfs4_opendata *data = calldata; |
1440 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1441 | |
24ac23ab TM |
1442 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1443 | return; | |
aac00a8d TM |
1444 | /* |
1445 | * Check if we still need to send an OPEN call, or if we can use | |
1446 | * a delegation instead. | |
1447 | */ | |
1448 | if (data->state != NULL) { | |
1449 | struct nfs_delegation *delegation; | |
1450 | ||
dc0b027d | 1451 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1452 | goto out_no_action; |
aac00a8d TM |
1453 | rcu_read_lock(); |
1454 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1455 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1456 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1457 | goto unlock_no_action; | |
aac00a8d TM |
1458 | rcu_read_unlock(); |
1459 | } | |
24ac23ab | 1460 | /* Update sequence id. */ |
48c22eb2 | 1461 | data->o_arg.id = sp->so_seqid.owner_id; |
1f0e890d | 1462 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1463 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1464 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1465 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1466 | } | |
26e976a8 | 1467 | data->timestamp = jiffies; |
035168ab | 1468 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1469 | &data->o_arg.seq_args, |
9d12b216 | 1470 | &data->o_res.seq_res, task)) |
d898528c | 1471 | return; |
5138fde0 | 1472 | rpc_call_start(task); |
6ee41268 | 1473 | return; |
652f89f6 TM |
1474 | unlock_no_action: |
1475 | rcu_read_unlock(); | |
6ee41268 TM |
1476 | out_no_action: |
1477 | task->tk_action = NULL; | |
1478 | ||
24ac23ab | 1479 | } |
1da177e4 | 1480 | |
b257957e AB |
1481 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1482 | { | |
1483 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1484 | nfs4_open_prepare(task, calldata); | |
1485 | } | |
1486 | ||
24ac23ab TM |
1487 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1488 | { | |
1489 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1490 | |
24ac23ab | 1491 | data->rpc_status = task->tk_status; |
d898528c | 1492 | |
14516c3a TM |
1493 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1494 | return; | |
d898528c | 1495 | |
24ac23ab TM |
1496 | if (task->tk_status == 0) { |
1497 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1498 | case S_IFREG: |
1499 | break; | |
1500 | case S_IFLNK: | |
24ac23ab | 1501 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1502 | break; |
1503 | case S_IFDIR: | |
24ac23ab | 1504 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1505 | break; |
1506 | default: | |
24ac23ab | 1507 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1508 | } |
26e976a8 | 1509 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1510 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1511 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1512 | } |
3e309914 | 1513 | data->rpc_done = 1; |
24ac23ab | 1514 | } |
6f926b5b | 1515 | |
24ac23ab TM |
1516 | static void nfs4_open_release(void *calldata) |
1517 | { | |
1518 | struct nfs4_opendata *data = calldata; | |
1519 | struct nfs4_state *state = NULL; | |
1520 | ||
1521 | /* If this request hasn't been cancelled, do nothing */ | |
1522 | if (data->cancelled == 0) | |
1523 | goto out_free; | |
1524 | /* In case of error, no cleanup! */ | |
3e309914 | 1525 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1526 | goto out_free; |
1527 | /* In case we need an open_confirm, no cleanup! */ | |
1528 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1529 | goto out_free; | |
24ac23ab | 1530 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1531 | if (!IS_ERR(state)) |
643168c2 | 1532 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1533 | out_free: |
c6d00e63 | 1534 | nfs4_opendata_put(data); |
24ac23ab TM |
1535 | } |
1536 | ||
1537 | static const struct rpc_call_ops nfs4_open_ops = { | |
1538 | .rpc_call_prepare = nfs4_open_prepare, | |
1539 | .rpc_call_done = nfs4_open_done, | |
1540 | .rpc_release = nfs4_open_release, | |
1541 | }; | |
1542 | ||
b257957e AB |
1543 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1544 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1545 | .rpc_call_done = nfs4_open_done, | |
1546 | .rpc_release = nfs4_open_release, | |
1547 | }; | |
1548 | ||
1549 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1550 | { |
1551 | struct inode *dir = data->dir->d_inode; | |
1552 | struct nfs_server *server = NFS_SERVER(dir); | |
1553 | struct nfs_openargs *o_arg = &data->o_arg; | |
1554 | struct nfs_openres *o_res = &data->o_res; | |
1555 | struct rpc_task *task; | |
5138fde0 TM |
1556 | struct rpc_message msg = { |
1557 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1558 | .rpc_argp = o_arg, | |
1559 | .rpc_resp = o_res, | |
1560 | .rpc_cred = data->owner->so_cred, | |
1561 | }; | |
c970aa85 TM |
1562 | struct rpc_task_setup task_setup_data = { |
1563 | .rpc_client = server->client, | |
5138fde0 | 1564 | .rpc_message = &msg, |
c970aa85 TM |
1565 | .callback_ops = &nfs4_open_ops, |
1566 | .callback_data = data, | |
101070ca | 1567 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1568 | .flags = RPC_TASK_ASYNC, |
1569 | }; | |
24ac23ab TM |
1570 | int status; |
1571 | ||
9d12b216 | 1572 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1573 | kref_get(&data->kref); |
3e309914 TM |
1574 | data->rpc_done = 0; |
1575 | data->rpc_status = 0; | |
2ced46c2 | 1576 | data->cancelled = 0; |
b257957e AB |
1577 | if (isrecover) |
1578 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1579 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1580 | if (IS_ERR(task)) |
1581 | return PTR_ERR(task); | |
1582 | status = nfs4_wait_for_completion_rpc_task(task); | |
1583 | if (status != 0) { | |
1584 | data->cancelled = 1; | |
1585 | smp_wmb(); | |
1586 | } else | |
1587 | status = data->rpc_status; | |
1588 | rpc_put_task(task); | |
1589 | ||
1590 | return status; | |
1591 | } | |
1592 | ||
1593 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1594 | { | |
1595 | struct inode *dir = data->dir->d_inode; | |
1596 | struct nfs_openres *o_res = &data->o_res; | |
1597 | int status; | |
1598 | ||
1599 | status = nfs4_run_open_task(data, 1); | |
1600 | if (status != 0 || !data->rpc_done) | |
1601 | return status; | |
1602 | ||
6926afd1 TM |
1603 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1604 | ||
b257957e AB |
1605 | nfs_refresh_inode(dir, o_res->dir_attr); |
1606 | ||
1607 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1608 | status = _nfs4_proc_open_confirm(data); | |
1609 | if (status != 0) | |
1610 | return status; | |
1611 | } | |
1612 | ||
1613 | return status; | |
1614 | } | |
1615 | ||
1616 | /* | |
1617 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1618 | */ | |
1619 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1620 | { | |
1621 | struct inode *dir = data->dir->d_inode; | |
1622 | struct nfs_server *server = NFS_SERVER(dir); | |
1623 | struct nfs_openargs *o_arg = &data->o_arg; | |
1624 | struct nfs_openres *o_res = &data->o_res; | |
1625 | int status; | |
1626 | ||
1627 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1628 | if (!data->rpc_done) |
1629 | return status; | |
1630 | if (status != 0) { | |
1631 | if (status == -NFS4ERR_BADNAME && | |
1632 | !(o_arg->open_flags & O_CREAT)) | |
1633 | return -ENOENT; | |
24ac23ab | 1634 | return status; |
08ef7bd3 | 1635 | } |
24ac23ab | 1636 | |
6926afd1 TM |
1637 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1638 | ||
56ae19f3 TM |
1639 | if (o_arg->open_flags & O_CREAT) { |
1640 | update_changeattr(dir, &o_res->cinfo); | |
1641 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1642 | } else | |
1643 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1644 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1645 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1646 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1647 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1648 | if (status != 0) |
24ac23ab | 1649 | return status; |
1da177e4 LT |
1650 | } |
1651 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1652 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1653 | return 0; |
1da177e4 LT |
1654 | } |
1655 | ||
d83217c1 | 1656 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1657 | { |
a78cb57a | 1658 | unsigned int loop; |
6b30954e | 1659 | int ret; |
58d9714a | 1660 | |
a78cb57a | 1661 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1662 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1663 | if (ret != 0) |
a78cb57a | 1664 | break; |
e598d843 TM |
1665 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1666 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1667 | break; |
0400a6b0 | 1668 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1669 | ret = -EIO; |
6b30954e | 1670 | } |
a78cb57a | 1671 | return ret; |
58d9714a TM |
1672 | } |
1673 | ||
d83217c1 AA |
1674 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1675 | { | |
1676 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1677 | } | |
1678 | ||
1da177e4 LT |
1679 | /* |
1680 | * OPEN_EXPIRED: | |
1681 | * reclaim state on the server after a network partition. | |
1682 | * Assumes caller holds the appropriate lock | |
1683 | */ | |
539cd03a | 1684 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1685 | { |
e56e0b78 | 1686 | struct nfs4_opendata *opendata; |
864472e9 | 1687 | int ret; |
1da177e4 | 1688 | |
6f220ed5 TM |
1689 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1690 | if (IS_ERR(opendata)) | |
1691 | return PTR_ERR(opendata); | |
864472e9 | 1692 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1693 | if (ret == -ESTALE) |
3d4ff43d | 1694 | d_drop(ctx->dentry); |
c6d00e63 | 1695 | nfs4_opendata_put(opendata); |
864472e9 | 1696 | return ret; |
1da177e4 LT |
1697 | } |
1698 | ||
a9ed2e25 | 1699 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1700 | { |
539cd03a | 1701 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1702 | struct nfs4_exception exception = { }; |
1703 | int err; | |
1704 | ||
1705 | do { | |
539cd03a | 1706 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1707 | switch (err) { |
1708 | default: | |
1709 | goto out; | |
1710 | case -NFS4ERR_GRACE: | |
1711 | case -NFS4ERR_DELAY: | |
1712 | nfs4_handle_exception(server, err, &exception); | |
1713 | err = 0; | |
1714 | } | |
202b50dc | 1715 | } while (exception.retry); |
a9ed2e25 | 1716 | out: |
202b50dc TM |
1717 | return err; |
1718 | } | |
1719 | ||
1da177e4 LT |
1720 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1721 | { | |
1da177e4 | 1722 | struct nfs_open_context *ctx; |
864472e9 | 1723 | int ret; |
1da177e4 | 1724 | |
864472e9 TM |
1725 | ctx = nfs4_state_find_open_context(state); |
1726 | if (IS_ERR(ctx)) | |
1727 | return PTR_ERR(ctx); | |
539cd03a | 1728 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1729 | put_nfs_open_context(ctx); |
1730 | return ret; | |
1da177e4 LT |
1731 | } |
1732 | ||
f062eb6c | 1733 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 1734 | static int nfs41_check_expired_stateid(struct nfs4_state *state, nfs4_stateid *stateid, unsigned int flags) |
f062eb6c | 1735 | { |
b01dd1d8 | 1736 | int status = NFS_OK; |
f062eb6c BS |
1737 | struct nfs_server *server = NFS_SERVER(state->inode); |
1738 | ||
b01dd1d8 BS |
1739 | if (state->flags & flags) { |
1740 | status = nfs41_test_stateid(server, stateid); | |
1741 | if (status != NFS_OK) { | |
1742 | nfs41_free_stateid(server, stateid); | |
1743 | state->flags &= ~flags; | |
1744 | } | |
1745 | } | |
1746 | return status; | |
1747 | } | |
1748 | ||
1749 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1750 | { | |
1751 | int deleg_status, open_status; | |
1752 | int deleg_flags = 1 << NFS_DELEGATED_STATE; | |
1753 | int open_flags = (1 << NFS_O_RDONLY_STATE) | (1 << NFS_O_WRONLY_STATE) | (1 << NFS_O_RDWR_STATE); | |
1754 | ||
1755 | deleg_status = nfs41_check_expired_stateid(state, &state->stateid, deleg_flags); | |
1756 | open_status = nfs41_check_expired_stateid(state, &state->open_stateid, open_flags); | |
1757 | ||
1758 | if ((deleg_status == NFS_OK) && (open_status == NFS_OK)) | |
1759 | return NFS_OK; | |
f062eb6c BS |
1760 | return nfs4_open_expired(sp, state); |
1761 | } | |
1762 | #endif | |
1763 | ||
aa53ed54 JL |
1764 | /* |
1765 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1766 | * fields corresponding to attributes that were used to store the verifier. | |
1767 | * Make sure we clobber those fields in the later setattr call | |
1768 | */ | |
1769 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1770 | { | |
1771 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1772 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1773 | sattr->ia_valid |= ATTR_ATIME; | |
1774 | ||
1775 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1776 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1777 | sattr->ia_valid |= ATTR_MTIME; | |
1778 | } | |
1779 | ||
1da177e4 | 1780 | /* |
24ac23ab | 1781 | * Returns a referenced nfs4_state |
1da177e4 | 1782 | */ |
82a2c1b7 | 1783 | 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 |
1784 | { |
1785 | struct nfs4_state_owner *sp; | |
1786 | struct nfs4_state *state = NULL; | |
1787 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1788 | struct nfs4_opendata *opendata; |
aac00a8d | 1789 | int status; |
1da177e4 LT |
1790 | |
1791 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1792 | status = -ENOMEM; |
d1e284d5 TM |
1793 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1794 | if (sp == NULL) { | |
1da177e4 LT |
1795 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1796 | goto out_err; | |
1797 | } | |
58d9714a TM |
1798 | status = nfs4_recover_expired_lease(server); |
1799 | if (status != 0) | |
b4454fe1 | 1800 | goto err_put_state_owner; |
82a2c1b7 AV |
1801 | if (dentry->d_inode != NULL) |
1802 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1803 | status = -ENOMEM; |
82a2c1b7 | 1804 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1805 | if (opendata == NULL) |
95d35cb4 | 1806 | goto err_put_state_owner; |
1da177e4 | 1807 | |
82a2c1b7 AV |
1808 | if (dentry->d_inode != NULL) |
1809 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1810 | |
24ac23ab | 1811 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1812 | if (status != 0) |
c6d00e63 | 1813 | goto err_opendata_put; |
1da177e4 | 1814 | |
24ac23ab | 1815 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1816 | status = PTR_ERR(state); |
1817 | if (IS_ERR(state)) | |
c6d00e63 | 1818 | goto err_opendata_put; |
0df5dd4a | 1819 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1820 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1821 | |
1822 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1823 | nfs4_exclusive_attrset(opendata, sattr); | |
1824 | ||
1825 | nfs_fattr_init(opendata->o_res.f_attr); | |
1826 | status = nfs4_do_setattr(state->inode, cred, | |
1827 | opendata->o_res.f_attr, sattr, | |
1828 | state); | |
1829 | if (status == 0) | |
1830 | nfs_setattr_update_inode(state->inode, sattr); | |
1831 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1832 | } | |
c6d00e63 | 1833 | nfs4_opendata_put(opendata); |
1da177e4 | 1834 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1835 | *res = state; |
1836 | return 0; | |
c6d00e63 TM |
1837 | err_opendata_put: |
1838 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1839 | err_put_state_owner: |
1840 | nfs4_put_state_owner(sp); | |
1da177e4 | 1841 | out_err: |
1da177e4 LT |
1842 | *res = NULL; |
1843 | return status; | |
1844 | } | |
1845 | ||
1846 | ||
82a2c1b7 | 1847 | 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 |
1848 | { |
1849 | struct nfs4_exception exception = { }; | |
1850 | struct nfs4_state *res; | |
1851 | int status; | |
1852 | ||
1853 | do { | |
82a2c1b7 | 1854 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1855 | if (status == 0) |
1856 | break; | |
1857 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1858 | * book-keeping w.r.t. state-changing operations | |
1859 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1860 | * It is actually a sign of a bug on the client or on the server. | |
1861 | * | |
1862 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1863 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1864 | * have unhashed the old state_owner for us, and that we can |
1865 | * therefore safely retry using a new one. We should still warn | |
1866 | * the user though... | |
1867 | */ | |
1868 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1869 | printk(KERN_WARNING "NFS: v4 server %s " |
1870 | " returned a bad sequence-id error!\n", | |
1871 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1872 | exception.retry = 1; |
1873 | continue; | |
1874 | } | |
550f5747 TM |
1875 | /* |
1876 | * BAD_STATEID on OPEN means that the server cancelled our | |
1877 | * state before it received the OPEN_CONFIRM. | |
1878 | * Recover by retrying the request as per the discussion | |
1879 | * on Page 181 of RFC3530. | |
1880 | */ | |
1881 | if (status == -NFS4ERR_BAD_STATEID) { | |
1882 | exception.retry = 1; | |
1883 | continue; | |
1884 | } | |
aac00a8d TM |
1885 | if (status == -EAGAIN) { |
1886 | /* We must have found a delegation */ | |
1887 | exception.retry = 1; | |
1888 | continue; | |
1889 | } | |
1da177e4 LT |
1890 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1891 | status, &exception)); | |
1892 | } while (exception.retry); | |
1893 | return res; | |
1894 | } | |
1895 | ||
659bfcd6 TM |
1896 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1897 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1898 | struct nfs4_state *state) | |
1da177e4 | 1899 | { |
3e4f6290 | 1900 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1901 | struct nfs_setattrargs arg = { |
3e4f6290 | 1902 | .fh = NFS_FH(inode), |
1da177e4 LT |
1903 | .iap = sattr, |
1904 | .server = server, | |
1905 | .bitmask = server->attr_bitmask, | |
1906 | }; | |
1907 | struct nfs_setattrres res = { | |
1908 | .fattr = fattr, | |
1909 | .server = server, | |
1910 | }; | |
1911 | struct rpc_message msg = { | |
659bfcd6 TM |
1912 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1913 | .rpc_argp = &arg, | |
1914 | .rpc_resp = &res, | |
1915 | .rpc_cred = cred, | |
1da177e4 | 1916 | }; |
26e976a8 | 1917 | unsigned long timestamp = jiffies; |
65e4308d | 1918 | int status; |
1da177e4 | 1919 | |
0e574af1 | 1920 | nfs_fattr_init(fattr); |
1da177e4 | 1921 | |
3e4f6290 TM |
1922 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1923 | /* Use that stateid */ | |
1924 | } else if (state != NULL) { | |
1e3987c3 | 1925 | nfs4_select_rw_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1926 | } else |
f597c537 | 1927 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 1928 | |
7c513058 | 1929 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1930 | if (status == 0 && state != NULL) |
1931 | renew_lease(server, timestamp); | |
65e4308d | 1932 | return status; |
1da177e4 LT |
1933 | } |
1934 | ||
659bfcd6 TM |
1935 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1936 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1937 | struct nfs4_state *state) | |
1da177e4 | 1938 | { |
3e4f6290 | 1939 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
1940 | struct nfs4_exception exception = { |
1941 | .state = state, | |
1942 | }; | |
1da177e4 LT |
1943 | int err; |
1944 | do { | |
1945 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1946 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1947 | &exception); |
1948 | } while (exception.retry); | |
1949 | return err; | |
1950 | } | |
1951 | ||
1952 | struct nfs4_closedata { | |
1953 | struct inode *inode; | |
1954 | struct nfs4_state *state; | |
1955 | struct nfs_closeargs arg; | |
1956 | struct nfs_closeres res; | |
516a6af6 | 1957 | struct nfs_fattr fattr; |
26e976a8 | 1958 | unsigned long timestamp; |
f7e8917a FI |
1959 | bool roc; |
1960 | u32 roc_barrier; | |
1da177e4 LT |
1961 | }; |
1962 | ||
963d8fe5 | 1963 | static void nfs4_free_closedata(void *data) |
9512135d | 1964 | { |
963d8fe5 TM |
1965 | struct nfs4_closedata *calldata = data; |
1966 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 1967 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 1968 | |
f7e8917a FI |
1969 | if (calldata->roc) |
1970 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1971 | nfs4_put_open_state(calldata->state); |
1972 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1973 | nfs4_put_state_owner(sp); |
643168c2 | 1974 | nfs_sb_deactive(sb); |
9512135d TM |
1975 | kfree(calldata); |
1976 | } | |
1977 | ||
88069f77 TM |
1978 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1979 | fmode_t fmode) | |
1980 | { | |
1981 | spin_lock(&state->owner->so_lock); | |
1982 | if (!(fmode & FMODE_READ)) | |
1983 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1984 | if (!(fmode & FMODE_WRITE)) | |
1985 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1986 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1987 | spin_unlock(&state->owner->so_lock); | |
1988 | } | |
1989 | ||
963d8fe5 | 1990 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1991 | { |
963d8fe5 | 1992 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1993 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1994 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1995 | ||
a3ca5651 | 1996 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
1997 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1998 | return; | |
1da177e4 LT |
1999 | /* hmm. we are done with the inode, and in the process of freeing |
2000 | * the state_owner. we keep this around to process errors | |
2001 | */ | |
1da177e4 LT |
2002 | switch (task->tk_status) { |
2003 | case 0: | |
f7e8917a FI |
2004 | if (calldata->roc) |
2005 | pnfs_roc_set_barrier(state->inode, | |
2006 | calldata->roc_barrier); | |
45328c35 | 2007 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2008 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2009 | nfs4_close_clear_stateid_flags(state, |
2010 | calldata->arg.fmode); | |
1da177e4 LT |
2011 | break; |
2012 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2013 | case -NFS4ERR_OLD_STATEID: |
2014 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2015 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2016 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2017 | break; |
1da177e4 | 2018 | default: |
72211dbe TM |
2019 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2020 | rpc_restart_call_prepare(task); | |
1da177e4 | 2021 | } |
72211dbe | 2022 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2023 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2024 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2025 | } |
2026 | ||
4ce70ada | 2027 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2028 | { |
4ce70ada | 2029 | struct nfs4_closedata *calldata = data; |
9512135d | 2030 | struct nfs4_state *state = calldata->state; |
88069f77 | 2031 | int call_close = 0; |
9512135d | 2032 | |
a3ca5651 | 2033 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2034 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2035 | return; |
003707c7 | 2036 | |
88069f77 TM |
2037 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2038 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2039 | spin_lock(&state->owner->so_lock); |
003707c7 | 2040 | /* Calculate the change in open mode */ |
e7616923 | 2041 | if (state->n_rdwr == 0) { |
003707c7 | 2042 | if (state->n_rdonly == 0) { |
88069f77 TM |
2043 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2044 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2045 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2046 | } |
2047 | if (state->n_wronly == 0) { | |
88069f77 TM |
2048 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2049 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2050 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2051 | } |
e7616923 | 2052 | } |
4cecb76f | 2053 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2054 | |
2055 | if (!call_close) { | |
963d8fe5 TM |
2056 | /* Note: exit _without_ calling nfs4_close_done */ |
2057 | task->tk_action = NULL; | |
a3ca5651 | 2058 | goto out; |
9512135d | 2059 | } |
88069f77 | 2060 | |
f7e8917a | 2061 | if (calldata->arg.fmode == 0) { |
88069f77 | 2062 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2063 | if (calldata->roc && |
2064 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2065 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2066 | task, NULL); | |
a3ca5651 | 2067 | goto out; |
f7e8917a FI |
2068 | } |
2069 | } | |
88069f77 | 2070 | |
516a6af6 | 2071 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2072 | calldata->timestamp = jiffies; |
035168ab | 2073 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
9d12b216 TM |
2074 | &calldata->arg.seq_args, |
2075 | &calldata->res.seq_res, | |
2076 | task)) | |
a3ca5651 | 2077 | goto out; |
5138fde0 | 2078 | rpc_call_start(task); |
a3ca5651 CL |
2079 | out: |
2080 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2081 | } |
2082 | ||
963d8fe5 | 2083 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2084 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2085 | .rpc_call_done = nfs4_close_done, |
2086 | .rpc_release = nfs4_free_closedata, | |
2087 | }; | |
2088 | ||
1da177e4 LT |
2089 | /* |
2090 | * It is possible for data to be read/written from a mem-mapped file | |
2091 | * after the sys_close call (which hits the vfs layer as a flush). | |
2092 | * This means that we can't safely call nfsv4 close on a file until | |
2093 | * the inode is cleared. This in turn means that we are not good | |
2094 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2095 | * share state even when we are done with one of the three share | |
2096 | * stateid's in the inode. | |
2097 | * | |
2098 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2099 | */ | |
643168c2 | 2100 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2101 | { |
4a35bd41 | 2102 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2103 | struct nfs4_closedata *calldata; |
b39e625b TM |
2104 | struct nfs4_state_owner *sp = state->owner; |
2105 | struct rpc_task *task; | |
5138fde0 TM |
2106 | struct rpc_message msg = { |
2107 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2108 | .rpc_cred = state->owner->so_cred, | |
2109 | }; | |
c970aa85 TM |
2110 | struct rpc_task_setup task_setup_data = { |
2111 | .rpc_client = server->client, | |
5138fde0 | 2112 | .rpc_message = &msg, |
c970aa85 | 2113 | .callback_ops = &nfs4_close_ops, |
101070ca | 2114 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2115 | .flags = RPC_TASK_ASYNC, |
2116 | }; | |
9512135d | 2117 | int status = -ENOMEM; |
1da177e4 | 2118 | |
8535b2be | 2119 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2120 | if (calldata == NULL) |
9512135d | 2121 | goto out; |
9d12b216 | 2122 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2123 | calldata->inode = state->inode; |
1da177e4 | 2124 | calldata->state = state; |
4a35bd41 | 2125 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2126 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2127 | /* Serialization for the sequence id */ |
8535b2be | 2128 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2129 | if (calldata->arg.seqid == NULL) |
2130 | goto out_free_calldata; | |
dc0b027d | 2131 | calldata->arg.fmode = 0; |
a65318bf | 2132 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2133 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2134 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2135 | calldata->res.server = server; |
f7e8917a | 2136 | calldata->roc = roc; |
643168c2 | 2137 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2138 | |
1174dd1f TM |
2139 | msg.rpc_argp = &calldata->arg; |
2140 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2141 | task_setup_data.callback_data = calldata; |
2142 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2143 | if (IS_ERR(task)) |
2144 | return PTR_ERR(task); | |
a49c3c77 TM |
2145 | status = 0; |
2146 | if (wait) | |
2147 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2148 | rpc_put_task(task); |
a49c3c77 | 2149 | return status; |
9512135d TM |
2150 | out_free_calldata: |
2151 | kfree(calldata); | |
2152 | out: | |
f7e8917a FI |
2153 | if (roc) |
2154 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2155 | nfs4_put_open_state(state); |
2156 | nfs4_put_state_owner(sp); | |
9512135d | 2157 | return status; |
1da177e4 LT |
2158 | } |
2159 | ||
2b484297 | 2160 | static struct inode * |
cd9a1c0e | 2161 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2162 | { |
1da177e4 | 2163 | struct nfs4_state *state; |
1da177e4 | 2164 | |
565277f6 | 2165 | /* Protect against concurrent sillydeletes */ |
3d4ff43d | 2166 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2167 | if (IS_ERR(state)) |
2168 | return ERR_CAST(state); | |
cd9a1c0e | 2169 | ctx->state = state; |
f46e0bd3 | 2170 | return igrab(state->inode); |
1da177e4 LT |
2171 | } |
2172 | ||
1185a552 | 2173 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2174 | { |
2175 | if (ctx->state == NULL) | |
2176 | return; | |
2177 | if (is_sync) | |
643168c2 | 2178 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2179 | else |
643168c2 | 2180 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2181 | } |
1da177e4 LT |
2182 | |
2183 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2184 | { | |
43652ad5 BH |
2185 | struct nfs4_server_caps_arg args = { |
2186 | .fhandle = fhandle, | |
2187 | }; | |
1da177e4 LT |
2188 | struct nfs4_server_caps_res res = {}; |
2189 | struct rpc_message msg = { | |
2190 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2191 | .rpc_argp = &args, |
1da177e4 LT |
2192 | .rpc_resp = &res, |
2193 | }; | |
2194 | int status; | |
2195 | ||
7c513058 | 2196 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2197 | if (status == 0) { |
2198 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2199 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2200 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2201 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2202 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2203 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2204 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2205 | server->caps |= NFS_CAP_ACLS; | |
2206 | if (res.has_links != 0) | |
2207 | server->caps |= NFS_CAP_HARDLINKS; | |
2208 | if (res.has_symlinks != 0) | |
2209 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2210 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2211 | server->caps |= NFS_CAP_FILEID; | |
2212 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2213 | server->caps |= NFS_CAP_MODE; | |
2214 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2215 | server->caps |= NFS_CAP_NLINK; | |
2216 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2217 | server->caps |= NFS_CAP_OWNER; | |
2218 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2219 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2220 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2221 | server->caps |= NFS_CAP_ATIME; | |
2222 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2223 | server->caps |= NFS_CAP_CTIME; | |
2224 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2225 | server->caps |= NFS_CAP_MTIME; | |
2226 | ||
a65318bf TM |
2227 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2228 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2229 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2230 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2231 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2232 | } |
cccef3b9 | 2233 | |
1da177e4 LT |
2234 | return status; |
2235 | } | |
2236 | ||
55a97593 | 2237 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2238 | { |
2239 | struct nfs4_exception exception = { }; | |
2240 | int err; | |
2241 | do { | |
2242 | err = nfs4_handle_exception(server, | |
2243 | _nfs4_server_capabilities(server, fhandle), | |
2244 | &exception); | |
2245 | } while (exception.retry); | |
2246 | return err; | |
2247 | } | |
2248 | ||
2249 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2250 | struct nfs_fsinfo *info) | |
2251 | { | |
1da177e4 LT |
2252 | struct nfs4_lookup_root_arg args = { |
2253 | .bitmask = nfs4_fattr_bitmap, | |
2254 | }; | |
2255 | struct nfs4_lookup_res res = { | |
2256 | .server = server, | |
0e574af1 | 2257 | .fattr = info->fattr, |
1da177e4 LT |
2258 | .fh = fhandle, |
2259 | }; | |
2260 | struct rpc_message msg = { | |
2261 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2262 | .rpc_argp = &args, | |
2263 | .rpc_resp = &res, | |
2264 | }; | |
008f55d0 | 2265 | |
0e574af1 | 2266 | nfs_fattr_init(info->fattr); |
7c513058 | 2267 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2268 | } |
2269 | ||
2270 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2271 | struct nfs_fsinfo *info) | |
2272 | { | |
2273 | struct nfs4_exception exception = { }; | |
2274 | int err; | |
2275 | do { | |
fb8a5ba8 BS |
2276 | err = _nfs4_lookup_root(server, fhandle, info); |
2277 | switch (err) { | |
2278 | case 0: | |
2279 | case -NFS4ERR_WRONGSEC: | |
2280 | break; | |
2281 | default: | |
2282 | err = nfs4_handle_exception(server, err, &exception); | |
2283 | } | |
1da177e4 LT |
2284 | } while (exception.retry); |
2285 | return err; | |
2286 | } | |
2287 | ||
8f70e95f BS |
2288 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2289 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2290 | { | |
2291 | struct rpc_auth *auth; | |
2292 | int ret; | |
2293 | ||
2294 | auth = rpcauth_create(flavor, server->client); | |
2295 | if (!auth) { | |
2296 | ret = -EIO; | |
2297 | goto out; | |
2298 | } | |
2299 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2300 | out: |
2301 | return ret; | |
2302 | } | |
2303 | ||
801a16dc | 2304 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2305 | struct nfs_fsinfo *info) |
1da177e4 | 2306 | { |
8f70e95f | 2307 | int i, len, status = 0; |
0fabee24 | 2308 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2309 | |
801a16dc BS |
2310 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2311 | flav_array[len] = RPC_AUTH_NULL; | |
2312 | len += 1; | |
8f70e95f BS |
2313 | |
2314 | for (i = 0; i < len; i++) { | |
2315 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2316 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2317 | continue; |
2318 | break; | |
8f70e95f | 2319 | } |
fb8a5ba8 BS |
2320 | /* |
2321 | * -EACCESS could mean that the user doesn't have correct permissions | |
2322 | * to access the mount. It could also mean that we tried to mount | |
2323 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2324 | * existing mount programs don't handle -EACCES very well so it should | |
2325 | * be mapped to -EPERM instead. | |
2326 | */ | |
2327 | if (status == -EACCES) | |
2328 | status = -EPERM; | |
801a16dc BS |
2329 | return status; |
2330 | } | |
2331 | ||
2332 | /* | |
2333 | * get the file handle for the "/" directory on the server | |
2334 | */ | |
2335 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2336 | struct nfs_fsinfo *info) | |
2337 | { | |
fca78d6d | 2338 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2339 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2340 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2341 | /* | |
2342 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2343 | * by nfs4_map_errors() as this function exits. | |
2344 | */ | |
fca78d6d | 2345 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2346 | if (status == 0) |
2347 | status = nfs4_server_capabilities(server, fhandle); | |
2348 | if (status == 0) | |
2349 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2350 | return nfs4_map_errors(status); |
1da177e4 LT |
2351 | } |
2352 | ||
6b97fd3d MN |
2353 | /* |
2354 | * Get locations and (maybe) other attributes of a referral. | |
2355 | * Note that we'll actually follow the referral later when | |
2356 | * we detect fsid mismatch in inode revalidation | |
2357 | */ | |
533eb461 AA |
2358 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, |
2359 | struct nfs_fattr *fattr, struct nfs_fh *fhandle) | |
6b97fd3d MN |
2360 | { |
2361 | int status = -ENOMEM; | |
2362 | struct page *page = NULL; | |
2363 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2364 | |
2365 | page = alloc_page(GFP_KERNEL); | |
2366 | if (page == NULL) | |
2367 | goto out; | |
2368 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2369 | if (locations == NULL) | |
2370 | goto out; | |
2371 | ||
c228fd3a | 2372 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2373 | if (status != 0) |
2374 | goto out; | |
2375 | /* Make sure server returned a different fsid for the referral */ | |
2376 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2377 | dprintk("%s: server did not return a different fsid for" |
2378 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2379 | status = -EIO; |
2380 | goto out; | |
2381 | } | |
533eb461 AA |
2382 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2383 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2384 | |
533eb461 | 2385 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2386 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2387 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2388 | out: | |
2389 | if (page) | |
2390 | __free_page(page); | |
5d7ca35a | 2391 | kfree(locations); |
6b97fd3d MN |
2392 | return status; |
2393 | } | |
2394 | ||
1da177e4 LT |
2395 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2396 | { | |
2397 | struct nfs4_getattr_arg args = { | |
2398 | .fh = fhandle, | |
2399 | .bitmask = server->attr_bitmask, | |
2400 | }; | |
2401 | struct nfs4_getattr_res res = { | |
2402 | .fattr = fattr, | |
2403 | .server = server, | |
2404 | }; | |
2405 | struct rpc_message msg = { | |
2406 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2407 | .rpc_argp = &args, | |
2408 | .rpc_resp = &res, | |
2409 | }; | |
2410 | ||
0e574af1 | 2411 | nfs_fattr_init(fattr); |
7c513058 | 2412 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2413 | } |
2414 | ||
2415 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2416 | { | |
2417 | struct nfs4_exception exception = { }; | |
2418 | int err; | |
2419 | do { | |
2420 | err = nfs4_handle_exception(server, | |
2421 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2422 | &exception); | |
2423 | } while (exception.retry); | |
2424 | return err; | |
2425 | } | |
2426 | ||
2427 | /* | |
2428 | * The file is not closed if it is opened due to the a request to change | |
2429 | * the size of the file. The open call will not be needed once the | |
2430 | * VFS layer lookup-intents are implemented. | |
2431 | * | |
2432 | * Close is called when the inode is destroyed. | |
2433 | * If we haven't opened the file for O_WRONLY, we | |
2434 | * need to in the size_change case to obtain a stateid. | |
2435 | * | |
2436 | * Got race? | |
2437 | * Because OPEN is always done by name in nfsv4, it is | |
2438 | * possible that we opened a different file by the same | |
2439 | * name. We can recognize this race condition, but we | |
2440 | * can't do anything about it besides returning an error. | |
2441 | * | |
2442 | * This will be fixed with VFS changes (lookup-intent). | |
2443 | */ | |
2444 | static int | |
2445 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2446 | struct iattr *sattr) | |
2447 | { | |
08e9eac4 | 2448 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2449 | struct rpc_cred *cred = NULL; |
d530838b | 2450 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2451 | int status; |
2452 | ||
8a1636c4 BH |
2453 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2454 | pnfs_return_layout(inode); | |
2455 | ||
0e574af1 | 2456 | nfs_fattr_init(fattr); |
1da177e4 | 2457 | |
d530838b | 2458 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2459 | if (sattr->ia_valid & ATTR_FILE) { |
2460 | struct nfs_open_context *ctx; | |
2461 | ||
2462 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2463 | if (ctx) { |
2464 | cred = ctx->cred; | |
2465 | state = ctx->state; | |
2466 | } | |
659bfcd6 | 2467 | } |
08e9eac4 | 2468 | |
536e43d1 TM |
2469 | /* Deal with open(O_TRUNC) */ |
2470 | if (sattr->ia_valid & ATTR_OPEN) | |
2471 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2472 | ||
659bfcd6 | 2473 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2474 | if (status == 0) |
2475 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2476 | return status; |
2477 | } | |
2478 | ||
0c2e53f1 TM |
2479 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2480 | const struct qstr *name, struct nfs_fh *fhandle, | |
2481 | struct nfs_fattr *fattr) | |
2b3de441 | 2482 | { |
0c2e53f1 | 2483 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2484 | int status; |
2485 | struct nfs4_lookup_arg args = { | |
2486 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2487 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2488 | .name = name, |
2489 | }; | |
2490 | struct nfs4_lookup_res res = { | |
2491 | .server = server, | |
2492 | .fattr = fattr, | |
2493 | .fh = fhandle, | |
2494 | }; | |
2495 | struct rpc_message msg = { | |
2496 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2497 | .rpc_argp = &args, | |
2498 | .rpc_resp = &res, | |
2499 | }; | |
2500 | ||
2501 | nfs_fattr_init(fattr); | |
2502 | ||
1da177e4 | 2503 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2504 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2505 | dprintk("NFS reply lookup: %d\n", status); |
2506 | return status; | |
2507 | } | |
2508 | ||
7ebb9315 BS |
2509 | void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh) |
2510 | { | |
2511 | memset(fh, 0, sizeof(struct nfs_fh)); | |
2512 | fattr->fsid.major = 1; | |
2513 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
2514 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT; | |
2515 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
2516 | fattr->nlink = 2; | |
2517 | } | |
2518 | ||
7c513058 BS |
2519 | static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, |
2520 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1da177e4 LT |
2521 | { |
2522 | struct nfs4_exception exception = { }; | |
2523 | int err; | |
2524 | do { | |
0c2e53f1 TM |
2525 | int status; |
2526 | ||
2527 | status = _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr); | |
2528 | switch (status) { | |
08ef7bd3 TM |
2529 | case -NFS4ERR_BADNAME: |
2530 | return -ENOENT; | |
0c2e53f1 | 2531 | case -NFS4ERR_MOVED: |
a6f498a8 | 2532 | return nfs4_get_referral(dir, name, fattr, fhandle); |
0c2e53f1 | 2533 | case -NFS4ERR_WRONGSEC: |
7ebb9315 | 2534 | nfs_fixup_secinfo_attributes(fattr, fhandle); |
0c2e53f1 TM |
2535 | } |
2536 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2537 | status, &exception); | |
1da177e4 LT |
2538 | } while (exception.retry); |
2539 | return err; | |
2540 | } | |
2541 | ||
2542 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2543 | { | |
76b32999 | 2544 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2545 | struct nfs4_accessargs args = { |
2546 | .fh = NFS_FH(inode), | |
a4980e78 | 2547 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2548 | }; |
2549 | struct nfs4_accessres res = { | |
2550 | .server = server, | |
1da177e4 | 2551 | }; |
1da177e4 LT |
2552 | struct rpc_message msg = { |
2553 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2554 | .rpc_argp = &args, | |
2555 | .rpc_resp = &res, | |
2556 | .rpc_cred = entry->cred, | |
2557 | }; | |
2558 | int mode = entry->mask; | |
2559 | int status; | |
2560 | ||
2561 | /* | |
2562 | * Determine which access bits we want to ask for... | |
2563 | */ | |
2564 | if (mode & MAY_READ) | |
2565 | args.access |= NFS4_ACCESS_READ; | |
2566 | if (S_ISDIR(inode->i_mode)) { | |
2567 | if (mode & MAY_WRITE) | |
2568 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2569 | if (mode & MAY_EXEC) | |
2570 | args.access |= NFS4_ACCESS_LOOKUP; | |
2571 | } else { | |
2572 | if (mode & MAY_WRITE) | |
2573 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2574 | if (mode & MAY_EXEC) | |
2575 | args.access |= NFS4_ACCESS_EXECUTE; | |
2576 | } | |
c407d41a TM |
2577 | |
2578 | res.fattr = nfs_alloc_fattr(); | |
2579 | if (res.fattr == NULL) | |
2580 | return -ENOMEM; | |
2581 | ||
7c513058 | 2582 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2583 | if (!status) { |
2584 | entry->mask = 0; | |
2585 | if (res.access & NFS4_ACCESS_READ) | |
2586 | entry->mask |= MAY_READ; | |
2587 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2588 | entry->mask |= MAY_WRITE; | |
2589 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2590 | entry->mask |= MAY_EXEC; | |
c407d41a | 2591 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2592 | } |
c407d41a | 2593 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2594 | return status; |
2595 | } | |
2596 | ||
2597 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2598 | { | |
2599 | struct nfs4_exception exception = { }; | |
2600 | int err; | |
2601 | do { | |
2602 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2603 | _nfs4_proc_access(inode, entry), | |
2604 | &exception); | |
2605 | } while (exception.retry); | |
2606 | return err; | |
2607 | } | |
2608 | ||
2609 | /* | |
2610 | * TODO: For the time being, we don't try to get any attributes | |
2611 | * along with any of the zero-copy operations READ, READDIR, | |
2612 | * READLINK, WRITE. | |
2613 | * | |
2614 | * In the case of the first three, we want to put the GETATTR | |
2615 | * after the read-type operation -- this is because it is hard | |
2616 | * to predict the length of a GETATTR response in v4, and thus | |
2617 | * align the READ data correctly. This means that the GETATTR | |
2618 | * may end up partially falling into the page cache, and we should | |
2619 | * shift it into the 'tail' of the xdr_buf before processing. | |
2620 | * To do this efficiently, we need to know the total length | |
2621 | * of data received, which doesn't seem to be available outside | |
2622 | * of the RPC layer. | |
2623 | * | |
2624 | * In the case of WRITE, we also want to put the GETATTR after | |
2625 | * the operation -- in this case because we want to make sure | |
2626 | * we get the post-operation mtime and size. This means that | |
2627 | * we can't use xdr_encode_pages() as written: we need a variant | |
2628 | * of it which would leave room in the 'tail' iovec. | |
2629 | * | |
2630 | * Both of these changes to the XDR layer would in fact be quite | |
2631 | * minor, but I decided to leave them for a subsequent patch. | |
2632 | */ | |
2633 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2634 | unsigned int pgbase, unsigned int pglen) | |
2635 | { | |
2636 | struct nfs4_readlink args = { | |
2637 | .fh = NFS_FH(inode), | |
2638 | .pgbase = pgbase, | |
2639 | .pglen = pglen, | |
2640 | .pages = &page, | |
2641 | }; | |
f50c7000 | 2642 | struct nfs4_readlink_res res; |
1da177e4 LT |
2643 | struct rpc_message msg = { |
2644 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2645 | .rpc_argp = &args, | |
f50c7000 | 2646 | .rpc_resp = &res, |
1da177e4 LT |
2647 | }; |
2648 | ||
7c513058 | 2649 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2650 | } |
2651 | ||
2652 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2653 | unsigned int pgbase, unsigned int pglen) | |
2654 | { | |
2655 | struct nfs4_exception exception = { }; | |
2656 | int err; | |
2657 | do { | |
2658 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2659 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2660 | &exception); | |
2661 | } while (exception.retry); | |
2662 | return err; | |
2663 | } | |
2664 | ||
1da177e4 LT |
2665 | /* |
2666 | * Got race? | |
2667 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2668 | * Until then, this create/open method is prone to inefficiency and race | |
2669 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2670 | * placed on the wire. | |
2671 | * | |
2672 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2673 | * The file will be opened again in the subsequent VFS open call | |
2674 | * (nfs4_proc_file_open). | |
2675 | * | |
2676 | * The open for read will just hang around to be used by any process that | |
2677 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2678 | */ | |
2679 | ||
2680 | static int | |
2681 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2682 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2683 | { |
82a2c1b7 | 2684 | struct dentry *de = dentry; |
1da177e4 | 2685 | struct nfs4_state *state; |
c0204fd2 TM |
2686 | struct rpc_cred *cred = NULL; |
2687 | fmode_t fmode = 0; | |
1da177e4 LT |
2688 | int status = 0; |
2689 | ||
c0204fd2 TM |
2690 | if (ctx != NULL) { |
2691 | cred = ctx->cred; | |
3d4ff43d | 2692 | de = ctx->dentry; |
c0204fd2 | 2693 | fmode = ctx->mode; |
1da177e4 | 2694 | } |
a8a5da99 | 2695 | sattr->ia_mode &= ~current_umask(); |
82a2c1b7 | 2696 | state = nfs4_do_open(dir, de, fmode, flags, sattr, cred); |
d4d9cdcb | 2697 | d_drop(dentry); |
1da177e4 LT |
2698 | if (IS_ERR(state)) { |
2699 | status = PTR_ERR(state); | |
c0204fd2 | 2700 | goto out; |
1da177e4 | 2701 | } |
d4d9cdcb | 2702 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2703 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2704 | if (ctx != NULL) |
2705 | ctx->state = state; | |
02a913a7 | 2706 | else |
643168c2 | 2707 | nfs4_close_sync(state, fmode); |
1da177e4 LT |
2708 | out: |
2709 | return status; | |
2710 | } | |
2711 | ||
2712 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2713 | { | |
16e42959 | 2714 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2715 | struct nfs_removeargs args = { |
1da177e4 | 2716 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2717 | .name.len = name->len, |
2718 | .name.name = name->name, | |
16e42959 TM |
2719 | .bitmask = server->attr_bitmask, |
2720 | }; | |
4fdc17b2 | 2721 | struct nfs_removeres res = { |
16e42959 | 2722 | .server = server, |
1da177e4 | 2723 | }; |
1da177e4 | 2724 | struct rpc_message msg = { |
4fdc17b2 TM |
2725 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2726 | .rpc_argp = &args, | |
2727 | .rpc_resp = &res, | |
1da177e4 | 2728 | }; |
d346890b TM |
2729 | int status = -ENOMEM; |
2730 | ||
2731 | res.dir_attr = nfs_alloc_fattr(); | |
2732 | if (res.dir_attr == NULL) | |
2733 | goto out; | |
1da177e4 | 2734 | |
7c513058 | 2735 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
16e42959 TM |
2736 | if (status == 0) { |
2737 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2738 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2739 | } |
d346890b TM |
2740 | nfs_free_fattr(res.dir_attr); |
2741 | out: | |
1da177e4 LT |
2742 | return status; |
2743 | } | |
2744 | ||
2745 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2746 | { | |
2747 | struct nfs4_exception exception = { }; | |
2748 | int err; | |
2749 | do { | |
2750 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2751 | _nfs4_proc_remove(dir, name), | |
2752 | &exception); | |
2753 | } while (exception.retry); | |
2754 | return err; | |
2755 | } | |
2756 | ||
e4eff1a6 | 2757 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2758 | { |
e4eff1a6 TM |
2759 | struct nfs_server *server = NFS_SERVER(dir); |
2760 | struct nfs_removeargs *args = msg->rpc_argp; | |
2761 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2762 | |
a65318bf | 2763 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2764 | res->server = server; |
1da177e4 | 2765 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2766 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2767 | } |
2768 | ||
e4eff1a6 | 2769 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2770 | { |
e4eff1a6 TM |
2771 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2772 | ||
14516c3a TM |
2773 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2774 | return 0; | |
9e33bed5 | 2775 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2776 | return 0; |
2777 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2778 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2779 | return 1; |
1da177e4 LT |
2780 | } |
2781 | ||
d3d4152a JL |
2782 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2783 | { | |
2784 | struct nfs_server *server = NFS_SERVER(dir); | |
2785 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2786 | struct nfs_renameres *res = msg->rpc_resp; | |
2787 | ||
2788 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2789 | arg->bitmask = server->attr_bitmask; | |
2790 | res->server = server; | |
9d12b216 | 2791 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
2792 | } |
2793 | ||
2794 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2795 | struct inode *new_dir) | |
2796 | { | |
2797 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2798 | ||
2799 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2800 | return 0; | |
2801 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2802 | return 0; | |
2803 | ||
2804 | update_changeattr(old_dir, &res->old_cinfo); | |
2805 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2806 | update_changeattr(new_dir, &res->new_cinfo); | |
2807 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2808 | return 1; | |
2809 | } | |
2810 | ||
1da177e4 LT |
2811 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2812 | struct inode *new_dir, struct qstr *new_name) | |
2813 | { | |
6caf2c82 | 2814 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2815 | struct nfs_renameargs arg = { |
1da177e4 LT |
2816 | .old_dir = NFS_FH(old_dir), |
2817 | .new_dir = NFS_FH(new_dir), | |
2818 | .old_name = old_name, | |
2819 | .new_name = new_name, | |
6caf2c82 TM |
2820 | .bitmask = server->attr_bitmask, |
2821 | }; | |
e8582a8b | 2822 | struct nfs_renameres res = { |
6caf2c82 | 2823 | .server = server, |
1da177e4 | 2824 | }; |
1da177e4 LT |
2825 | struct rpc_message msg = { |
2826 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2827 | .rpc_argp = &arg, | |
2828 | .rpc_resp = &res, | |
2829 | }; | |
011fff72 | 2830 | int status = -ENOMEM; |
1da177e4 | 2831 | |
011fff72 TM |
2832 | res.old_fattr = nfs_alloc_fattr(); |
2833 | res.new_fattr = nfs_alloc_fattr(); | |
2834 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2835 | goto out; | |
1da177e4 | 2836 | |
7c513058 | 2837 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2838 | if (!status) { |
2839 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2840 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2841 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2842 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2843 | } |
011fff72 TM |
2844 | out: |
2845 | nfs_free_fattr(res.new_fattr); | |
2846 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2847 | return status; |
2848 | } | |
2849 | ||
2850 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2851 | struct inode *new_dir, struct qstr *new_name) | |
2852 | { | |
2853 | struct nfs4_exception exception = { }; | |
2854 | int err; | |
2855 | do { | |
2856 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2857 | _nfs4_proc_rename(old_dir, old_name, | |
2858 | new_dir, new_name), | |
2859 | &exception); | |
2860 | } while (exception.retry); | |
2861 | return err; | |
2862 | } | |
2863 | ||
2864 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2865 | { | |
91ba2eee | 2866 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2867 | struct nfs4_link_arg arg = { |
2868 | .fh = NFS_FH(inode), | |
2869 | .dir_fh = NFS_FH(dir), | |
2870 | .name = name, | |
91ba2eee TM |
2871 | .bitmask = server->attr_bitmask, |
2872 | }; | |
91ba2eee TM |
2873 | struct nfs4_link_res res = { |
2874 | .server = server, | |
1da177e4 | 2875 | }; |
1da177e4 LT |
2876 | struct rpc_message msg = { |
2877 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2878 | .rpc_argp = &arg, | |
91ba2eee | 2879 | .rpc_resp = &res, |
1da177e4 | 2880 | }; |
136f2627 TM |
2881 | int status = -ENOMEM; |
2882 | ||
2883 | res.fattr = nfs_alloc_fattr(); | |
2884 | res.dir_attr = nfs_alloc_fattr(); | |
2885 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2886 | goto out; | |
1da177e4 | 2887 | |
7c513058 | 2888 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2889 | if (!status) { |
2890 | update_changeattr(dir, &res.cinfo); | |
2891 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2892 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2893 | } |
136f2627 TM |
2894 | out: |
2895 | nfs_free_fattr(res.dir_attr); | |
2896 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2897 | return status; |
2898 | } | |
2899 | ||
2900 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2901 | { | |
2902 | struct nfs4_exception exception = { }; | |
2903 | int err; | |
2904 | do { | |
2905 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2906 | _nfs4_proc_link(inode, dir, name), | |
2907 | &exception); | |
2908 | } while (exception.retry); | |
2909 | return err; | |
2910 | } | |
2911 | ||
57dc9a57 TM |
2912 | struct nfs4_createdata { |
2913 | struct rpc_message msg; | |
2914 | struct nfs4_create_arg arg; | |
2915 | struct nfs4_create_res res; | |
2916 | struct nfs_fh fh; | |
2917 | struct nfs_fattr fattr; | |
2918 | struct nfs_fattr dir_fattr; | |
2919 | }; | |
2920 | ||
2921 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2922 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2923 | { | |
2924 | struct nfs4_createdata *data; | |
2925 | ||
2926 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2927 | if (data != NULL) { | |
2928 | struct nfs_server *server = NFS_SERVER(dir); | |
2929 | ||
2930 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2931 | data->msg.rpc_argp = &data->arg; | |
2932 | data->msg.rpc_resp = &data->res; | |
2933 | data->arg.dir_fh = NFS_FH(dir); | |
2934 | data->arg.server = server; | |
2935 | data->arg.name = name; | |
2936 | data->arg.attrs = sattr; | |
2937 | data->arg.ftype = ftype; | |
2938 | data->arg.bitmask = server->attr_bitmask; | |
2939 | data->res.server = server; | |
2940 | data->res.fh = &data->fh; | |
2941 | data->res.fattr = &data->fattr; | |
2942 | data->res.dir_fattr = &data->dir_fattr; | |
2943 | nfs_fattr_init(data->res.fattr); | |
2944 | nfs_fattr_init(data->res.dir_fattr); | |
2945 | } | |
2946 | return data; | |
2947 | } | |
2948 | ||
2949 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2950 | { | |
7c513058 | 2951 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 2952 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
2953 | if (status == 0) { |
2954 | update_changeattr(dir, &data->res.dir_cinfo); | |
2955 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2956 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2957 | } | |
2958 | return status; | |
2959 | } | |
2960 | ||
2961 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2962 | { | |
2963 | kfree(data); | |
2964 | } | |
2965 | ||
4f390c15 | 2966 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2967 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2968 | { |
57dc9a57 TM |
2969 | struct nfs4_createdata *data; |
2970 | int status = -ENAMETOOLONG; | |
1da177e4 | 2971 | |
94a6d753 | 2972 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2973 | goto out; |
4f390c15 | 2974 | |
57dc9a57 TM |
2975 | status = -ENOMEM; |
2976 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2977 | if (data == NULL) | |
2978 | goto out; | |
2979 | ||
2980 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2981 | data->arg.u.symlink.pages = &page; | |
2982 | data->arg.u.symlink.len = len; | |
1da177e4 | 2983 | |
57dc9a57 TM |
2984 | status = nfs4_do_create(dir, dentry, data); |
2985 | ||
2986 | nfs4_free_createdata(data); | |
2987 | out: | |
1da177e4 LT |
2988 | return status; |
2989 | } | |
2990 | ||
4f390c15 | 2991 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2992 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2993 | { |
2994 | struct nfs4_exception exception = { }; | |
2995 | int err; | |
2996 | do { | |
2997 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2998 | _nfs4_proc_symlink(dir, dentry, page, |
2999 | len, sattr), | |
1da177e4 LT |
3000 | &exception); |
3001 | } while (exception.retry); | |
3002 | return err; | |
3003 | } | |
3004 | ||
3005 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3006 | struct iattr *sattr) | |
3007 | { | |
57dc9a57 TM |
3008 | struct nfs4_createdata *data; |
3009 | int status = -ENOMEM; | |
1da177e4 | 3010 | |
57dc9a57 TM |
3011 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3012 | if (data == NULL) | |
3013 | goto out; | |
3014 | ||
3015 | status = nfs4_do_create(dir, dentry, data); | |
3016 | ||
3017 | nfs4_free_createdata(data); | |
3018 | out: | |
1da177e4 LT |
3019 | return status; |
3020 | } | |
3021 | ||
3022 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3023 | struct iattr *sattr) | |
3024 | { | |
3025 | struct nfs4_exception exception = { }; | |
3026 | int err; | |
a8a5da99 AK |
3027 | |
3028 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3029 | do { |
3030 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3031 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3032 | &exception); | |
3033 | } while (exception.retry); | |
3034 | return err; | |
3035 | } | |
3036 | ||
3037 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3038 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3039 | { |
3040 | struct inode *dir = dentry->d_inode; | |
3041 | struct nfs4_readdir_arg args = { | |
3042 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3043 | .pages = pages, |
1da177e4 LT |
3044 | .pgbase = 0, |
3045 | .count = count, | |
96d25e53 | 3046 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3047 | .plus = plus, |
1da177e4 LT |
3048 | }; |
3049 | struct nfs4_readdir_res res; | |
3050 | struct rpc_message msg = { | |
3051 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3052 | .rpc_argp = &args, | |
3053 | .rpc_resp = &res, | |
3054 | .rpc_cred = cred, | |
3055 | }; | |
3056 | int status; | |
3057 | ||
3110ff80 | 3058 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3059 | dentry->d_parent->d_name.name, |
3060 | dentry->d_name.name, | |
3061 | (unsigned long long)cookie); | |
1da177e4 LT |
3062 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3063 | res.pgbase = args.pgbase; | |
7c513058 | 3064 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3065 | if (status >= 0) { |
1da177e4 | 3066 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3067 | status += args.pgbase; |
3068 | } | |
c4812998 TM |
3069 | |
3070 | nfs_invalidate_atime(dir); | |
3071 | ||
3110ff80 | 3072 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3073 | return status; |
3074 | } | |
3075 | ||
3076 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3077 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3078 | { |
3079 | struct nfs4_exception exception = { }; | |
3080 | int err; | |
3081 | do { | |
3082 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3083 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3084 | pages, count, plus), |
1da177e4 LT |
3085 | &exception); |
3086 | } while (exception.retry); | |
3087 | return err; | |
3088 | } | |
3089 | ||
3090 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3091 | struct iattr *sattr, dev_t rdev) | |
3092 | { | |
57dc9a57 TM |
3093 | struct nfs4_createdata *data; |
3094 | int mode = sattr->ia_mode; | |
3095 | int status = -ENOMEM; | |
1da177e4 LT |
3096 | |
3097 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3098 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3099 | |
3100 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3101 | if (data == NULL) | |
3102 | goto out; | |
3103 | ||
1da177e4 | 3104 | if (S_ISFIFO(mode)) |
57dc9a57 | 3105 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3106 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3107 | data->arg.ftype = NF4BLK; |
3108 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3109 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3110 | } |
3111 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3112 | data->arg.ftype = NF4CHR; |
3113 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3114 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3115 | } |
1da177e4 | 3116 | |
57dc9a57 TM |
3117 | status = nfs4_do_create(dir, dentry, data); |
3118 | ||
3119 | nfs4_free_createdata(data); | |
3120 | out: | |
1da177e4 LT |
3121 | return status; |
3122 | } | |
3123 | ||
3124 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3125 | struct iattr *sattr, dev_t rdev) | |
3126 | { | |
3127 | struct nfs4_exception exception = { }; | |
3128 | int err; | |
a8a5da99 AK |
3129 | |
3130 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3131 | do { |
3132 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3133 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3134 | &exception); | |
3135 | } while (exception.retry); | |
3136 | return err; | |
3137 | } | |
3138 | ||
3139 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3140 | struct nfs_fsstat *fsstat) | |
3141 | { | |
3142 | struct nfs4_statfs_arg args = { | |
3143 | .fh = fhandle, | |
3144 | .bitmask = server->attr_bitmask, | |
3145 | }; | |
24ad148a BH |
3146 | struct nfs4_statfs_res res = { |
3147 | .fsstat = fsstat, | |
3148 | }; | |
1da177e4 LT |
3149 | struct rpc_message msg = { |
3150 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3151 | .rpc_argp = &args, | |
24ad148a | 3152 | .rpc_resp = &res, |
1da177e4 LT |
3153 | }; |
3154 | ||
0e574af1 | 3155 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3156 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3157 | } |
3158 | ||
3159 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3160 | { | |
3161 | struct nfs4_exception exception = { }; | |
3162 | int err; | |
3163 | do { | |
3164 | err = nfs4_handle_exception(server, | |
3165 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3166 | &exception); | |
3167 | } while (exception.retry); | |
3168 | return err; | |
3169 | } | |
3170 | ||
3171 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3172 | struct nfs_fsinfo *fsinfo) | |
3173 | { | |
3174 | struct nfs4_fsinfo_arg args = { | |
3175 | .fh = fhandle, | |
3176 | .bitmask = server->attr_bitmask, | |
3177 | }; | |
3dda5e43 BH |
3178 | struct nfs4_fsinfo_res res = { |
3179 | .fsinfo = fsinfo, | |
3180 | }; | |
1da177e4 LT |
3181 | struct rpc_message msg = { |
3182 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3183 | .rpc_argp = &args, | |
3dda5e43 | 3184 | .rpc_resp = &res, |
1da177e4 LT |
3185 | }; |
3186 | ||
7c513058 | 3187 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3188 | } |
3189 | ||
3190 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3191 | { | |
3192 | struct nfs4_exception exception = { }; | |
3193 | int err; | |
3194 | ||
3195 | do { | |
3196 | err = nfs4_handle_exception(server, | |
3197 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3198 | &exception); | |
3199 | } while (exception.retry); | |
3200 | return err; | |
3201 | } | |
3202 | ||
3203 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3204 | { | |
0e574af1 | 3205 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3206 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3207 | } | |
3208 | ||
3209 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3210 | struct nfs_pathconf *pathconf) | |
3211 | { | |
3212 | struct nfs4_pathconf_arg args = { | |
3213 | .fh = fhandle, | |
3214 | .bitmask = server->attr_bitmask, | |
3215 | }; | |
d45b2989 BH |
3216 | struct nfs4_pathconf_res res = { |
3217 | .pathconf = pathconf, | |
3218 | }; | |
1da177e4 LT |
3219 | struct rpc_message msg = { |
3220 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3221 | .rpc_argp = &args, | |
d45b2989 | 3222 | .rpc_resp = &res, |
1da177e4 LT |
3223 | }; |
3224 | ||
3225 | /* None of the pathconf attributes are mandatory to implement */ | |
3226 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3227 | memset(pathconf, 0, sizeof(*pathconf)); | |
3228 | return 0; | |
3229 | } | |
3230 | ||
0e574af1 | 3231 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3232 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3233 | } |
3234 | ||
3235 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3236 | struct nfs_pathconf *pathconf) | |
3237 | { | |
3238 | struct nfs4_exception exception = { }; | |
3239 | int err; | |
3240 | ||
3241 | do { | |
3242 | err = nfs4_handle_exception(server, | |
3243 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3244 | &exception); | |
3245 | } while (exception.retry); | |
3246 | return err; | |
3247 | } | |
3248 | ||
d20581aa BH |
3249 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3250 | { | |
3251 | nfs_invalidate_atime(data->inode); | |
3252 | } | |
3253 | ||
cbdabc7f | 3254 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3255 | { |
ec06c096 | 3256 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3257 | |
9e33bed5 | 3258 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3259 | rpc_restart_call_prepare(task); |
ec06c096 | 3260 | return -EAGAIN; |
1da177e4 | 3261 | } |
8850df99 | 3262 | |
d20581aa | 3263 | __nfs4_read_done_cb(data); |
1da177e4 | 3264 | if (task->tk_status > 0) |
ec06c096 TM |
3265 | renew_lease(server, data->timestamp); |
3266 | return 0; | |
1da177e4 LT |
3267 | } |
3268 | ||
cbdabc7f AA |
3269 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3270 | { | |
3271 | ||
3272 | dprintk("--> %s\n", __func__); | |
3273 | ||
3274 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3275 | return -EAGAIN; | |
3276 | ||
d20581aa BH |
3277 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3278 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3279 | } |
3280 | ||
bdc7f021 | 3281 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3282 | { |
1da177e4 | 3283 | data->timestamp = jiffies; |
cbdabc7f | 3284 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3285 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3286 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3287 | } |
3288 | ||
cbdabc7f AA |
3289 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3290 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3291 | { | |
3292 | dprintk("%s Reset task for i/o through\n", __func__); | |
3293 | put_lseg(data->lseg); | |
3294 | data->lseg = NULL; | |
3295 | /* offsets will differ in the dense stripe case */ | |
3296 | data->args.offset = data->mds_offset; | |
3297 | data->ds_clp = NULL; | |
3298 | data->args.fh = NFS_FH(data->inode); | |
3299 | data->read_done_cb = nfs4_read_done_cb; | |
3300 | task->tk_ops = data->mds_ops; | |
3301 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3302 | } | |
3303 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3304 | ||
b029bc9b | 3305 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3306 | { |
1da177e4 LT |
3307 | struct inode *inode = data->inode; |
3308 | ||
9e33bed5 | 3309 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3310 | rpc_restart_call_prepare(task); |
788e7a89 | 3311 | return -EAGAIN; |
1da177e4 | 3312 | } |
4f9838c7 | 3313 | if (task->tk_status >= 0) { |
1da177e4 | 3314 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3315 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3316 | } |
788e7a89 | 3317 | return 0; |
1da177e4 LT |
3318 | } |
3319 | ||
b029bc9b FI |
3320 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3321 | { | |
3322 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3323 | return -EAGAIN; | |
d20581aa BH |
3324 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3325 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3326 | } |
3327 | ||
a69aef14 FI |
3328 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3329 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3330 | { | |
3331 | dprintk("%s Reset task for i/o through\n", __func__); | |
3332 | put_lseg(data->lseg); | |
3333 | data->lseg = NULL; | |
3334 | data->ds_clp = NULL; | |
3335 | data->write_done_cb = nfs4_write_done_cb; | |
3336 | data->args.fh = NFS_FH(data->inode); | |
3337 | data->args.bitmask = data->res.server->cache_consistency_bitmask; | |
3338 | data->args.offset = data->mds_offset; | |
3339 | data->res.fattr = &data->fattr; | |
3340 | task->tk_ops = data->mds_ops; | |
3341 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3342 | } | |
3343 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3344 | ||
bdc7f021 | 3345 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3346 | { |
bdc7f021 TM |
3347 | struct nfs_server *server = NFS_SERVER(data->inode); |
3348 | ||
7ffd1064 FI |
3349 | if (data->lseg) { |
3350 | data->args.bitmask = NULL; | |
3351 | data->res.fattr = NULL; | |
3352 | } else | |
3353 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3354 | if (!data->write_done_cb) |
3355 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3356 | data->res.server = server; |
1da177e4 LT |
3357 | data->timestamp = jiffies; |
3358 | ||
bdc7f021 | 3359 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3360 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3361 | } |
3362 | ||
5f452431 | 3363 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3364 | { |
1da177e4 | 3365 | struct inode *inode = data->inode; |
14516c3a | 3366 | |
9e33bed5 | 3367 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3368 | rpc_restart_call_prepare(task); |
788e7a89 | 3369 | return -EAGAIN; |
1da177e4 | 3370 | } |
9e08a3c5 | 3371 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3372 | return 0; |
1da177e4 LT |
3373 | } |
3374 | ||
5f452431 FI |
3375 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
3376 | { | |
3377 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3378 | return -EAGAIN; | |
3379 | return data->write_done_cb(task, data); | |
3380 | } | |
3381 | ||
bdc7f021 | 3382 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3383 | { |
788e7a89 | 3384 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce FI |
3385 | |
3386 | if (data->lseg) { | |
3387 | data->args.bitmask = NULL; | |
3388 | data->res.fattr = NULL; | |
3389 | } else | |
3390 | data->args.bitmask = server->cache_consistency_bitmask; | |
5f452431 FI |
3391 | if (!data->write_done_cb) |
3392 | data->write_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3393 | data->res.server = server; |
bdc7f021 | 3394 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3395 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3396 | } |
3397 | ||
9bc4e3ca CL |
3398 | struct nfs4_renewdata { |
3399 | struct nfs_client *client; | |
3400 | unsigned long timestamp; | |
3401 | }; | |
3402 | ||
1da177e4 LT |
3403 | /* |
3404 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3405 | * standalone procedure for queueing an asynchronous RENEW. | |
3406 | */ | |
9bc4e3ca | 3407 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3408 | { |
9bc4e3ca CL |
3409 | struct nfs4_renewdata *data = calldata; |
3410 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3411 | |
0851de06 AB |
3412 | if (atomic_read(&clp->cl_count) > 1) |
3413 | nfs4_schedule_state_renewal(clp); | |
3414 | nfs_put_client(clp); | |
9bc4e3ca | 3415 | kfree(data); |
dc96aef9 AB |
3416 | } |
3417 | ||
9bc4e3ca | 3418 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3419 | { |
9bc4e3ca CL |
3420 | struct nfs4_renewdata *data = calldata; |
3421 | struct nfs_client *clp = data->client; | |
3422 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3423 | |
3424 | if (task->tk_status < 0) { | |
95baa25c | 3425 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3426 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3427 | return; | |
3428 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3429 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3430 | return; |
3431 | } | |
3432 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3433 | } |
452e9352 | 3434 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3435 | } |
3436 | ||
963d8fe5 TM |
3437 | static const struct rpc_call_ops nfs4_renew_ops = { |
3438 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3439 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3440 | }; |
3441 | ||
2f60ea6b | 3442 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3443 | { |
3444 | struct rpc_message msg = { | |
3445 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3446 | .rpc_argp = clp, | |
b4454fe1 | 3447 | .rpc_cred = cred, |
1da177e4 | 3448 | }; |
9bc4e3ca | 3449 | struct nfs4_renewdata *data; |
1da177e4 | 3450 | |
2f60ea6b TM |
3451 | if (renew_flags == 0) |
3452 | return 0; | |
0851de06 AB |
3453 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3454 | return -EIO; | |
b569ad34 | 3455 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3456 | if (data == NULL) |
3457 | return -ENOMEM; | |
3458 | data->client = clp; | |
3459 | data->timestamp = jiffies; | |
1da177e4 | 3460 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3461 | &nfs4_renew_ops, data); |
1da177e4 LT |
3462 | } |
3463 | ||
8534d4ec | 3464 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3465 | { |
3466 | struct rpc_message msg = { | |
3467 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3468 | .rpc_argp = clp, | |
b4454fe1 | 3469 | .rpc_cred = cred, |
1da177e4 LT |
3470 | }; |
3471 | unsigned long now = jiffies; | |
3472 | int status; | |
3473 | ||
3474 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3475 | if (status < 0) | |
3476 | return status; | |
452e9352 | 3477 | do_renew_lease(clp, now); |
1da177e4 LT |
3478 | return 0; |
3479 | } | |
3480 | ||
aa1870af BF |
3481 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3482 | { | |
3483 | return (server->caps & NFS_CAP_ACLS) | |
3484 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3485 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3486 | } | |
3487 | ||
3488 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3489 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3490 | * the stack. | |
3491 | */ | |
3492 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3493 | ||
e9e3d724 NH |
3494 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3495 | struct page **pages, unsigned int *pgbase) | |
3496 | { | |
3497 | struct page *newpage, **spages; | |
3498 | int rc = 0; | |
3499 | size_t len; | |
3500 | spages = pages; | |
3501 | ||
3502 | do { | |
43b7c3f0 | 3503 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3504 | newpage = alloc_page(GFP_KERNEL); |
3505 | ||
3506 | if (newpage == NULL) | |
3507 | goto unwind; | |
3508 | memcpy(page_address(newpage), buf, len); | |
3509 | buf += len; | |
3510 | buflen -= len; | |
3511 | *pages++ = newpage; | |
3512 | rc++; | |
3513 | } while (buflen != 0); | |
3514 | ||
3515 | return rc; | |
3516 | ||
3517 | unwind: | |
3518 | for(; rc > 0; rc--) | |
3519 | __free_page(spages[rc-1]); | |
3520 | return -ENOMEM; | |
3521 | } | |
3522 | ||
e50a1c2e BF |
3523 | struct nfs4_cached_acl { |
3524 | int cached; | |
3525 | size_t len; | |
3e9d4154 | 3526 | char data[0]; |
e50a1c2e BF |
3527 | }; |
3528 | ||
3529 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3530 | { | |
3531 | struct nfs_inode *nfsi = NFS_I(inode); | |
3532 | ||
3533 | spin_lock(&inode->i_lock); | |
3534 | kfree(nfsi->nfs4_acl); | |
3535 | nfsi->nfs4_acl = acl; | |
3536 | spin_unlock(&inode->i_lock); | |
3537 | } | |
3538 | ||
3539 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3540 | { | |
3541 | nfs4_set_cached_acl(inode, NULL); | |
3542 | } | |
3543 | ||
3544 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3545 | { | |
3546 | struct nfs_inode *nfsi = NFS_I(inode); | |
3547 | struct nfs4_cached_acl *acl; | |
3548 | int ret = -ENOENT; | |
3549 | ||
3550 | spin_lock(&inode->i_lock); | |
3551 | acl = nfsi->nfs4_acl; | |
3552 | if (acl == NULL) | |
3553 | goto out; | |
3554 | if (buf == NULL) /* user is just asking for length */ | |
3555 | goto out_len; | |
3556 | if (acl->cached == 0) | |
3557 | goto out; | |
3558 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3559 | if (acl->len > buflen) | |
3560 | goto out; | |
3561 | memcpy(buf, acl->data, acl->len); | |
3562 | out_len: | |
3563 | ret = acl->len; | |
3564 | out: | |
3565 | spin_unlock(&inode->i_lock); | |
3566 | return ret; | |
3567 | } | |
3568 | ||
3569 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3570 | { | |
3571 | struct nfs4_cached_acl *acl; | |
3572 | ||
3573 | if (buf && acl_len <= PAGE_SIZE) { | |
3574 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3575 | if (acl == NULL) | |
3576 | goto out; | |
3577 | acl->cached = 1; | |
3578 | memcpy(acl->data, buf, acl_len); | |
3579 | } else { | |
3580 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3581 | if (acl == NULL) | |
3582 | goto out; | |
3583 | acl->cached = 0; | |
3584 | } | |
3585 | acl->len = acl_len; | |
3586 | out: | |
3587 | nfs4_set_cached_acl(inode, acl); | |
3588 | } | |
3589 | ||
bf118a34 AA |
3590 | /* |
3591 | * The getxattr API returns the required buffer length when called with a | |
3592 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3593 | * the required buf. On a NULL buf, we send a page of data to the server | |
3594 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3595 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3596 | * the cache. If not so, we throw away the page, and cache the required | |
3597 | * length. The next getxattr call will then produce another round trip to | |
3598 | * the server, this time with the input buf of the required size. | |
3599 | */ | |
16b4289c | 3600 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3601 | { |
bf118a34 | 3602 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3603 | struct nfs_getaclargs args = { |
3604 | .fh = NFS_FH(inode), | |
3605 | .acl_pages = pages, | |
3606 | .acl_len = buflen, | |
3607 | }; | |
663c79b3 BH |
3608 | struct nfs_getaclres res = { |
3609 | .acl_len = buflen, | |
3610 | }; | |
e50a1c2e | 3611 | void *resp_buf; |
aa1870af BF |
3612 | struct rpc_message msg = { |
3613 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3614 | .rpc_argp = &args, | |
663c79b3 | 3615 | .rpc_resp = &res, |
aa1870af | 3616 | }; |
bf118a34 | 3617 | int ret = -ENOMEM, npages, i, acl_len = 0; |
aa1870af | 3618 | |
bf118a34 AA |
3619 | npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; |
3620 | /* As long as we're doing a round trip to the server anyway, | |
3621 | * let's be prepared for a page of acl data. */ | |
3622 | if (npages == 0) | |
3623 | npages = 1; | |
3624 | ||
3625 | for (i = 0; i < npages; i++) { | |
3626 | pages[i] = alloc_page(GFP_KERNEL); | |
3627 | if (!pages[i]) | |
3628 | goto out_free; | |
e50a1c2e | 3629 | } |
bf118a34 AA |
3630 | if (npages > 1) { |
3631 | /* for decoding across pages */ | |
331818f1 TM |
3632 | res.acl_scratch = alloc_page(GFP_KERNEL); |
3633 | if (!res.acl_scratch) | |
bf118a34 | 3634 | goto out_free; |
e50a1c2e | 3635 | } |
bf118a34 AA |
3636 | args.acl_len = npages * PAGE_SIZE; |
3637 | args.acl_pgbase = 0; | |
3638 | /* Let decode_getfacl know not to fail if the ACL data is larger than | |
3639 | * the page we send as a guess */ | |
3640 | if (buf == NULL) | |
3641 | res.acl_flags |= NFS4_ACL_LEN_REQUEST; | |
3642 | resp_buf = page_address(pages[0]); | |
3643 | ||
de040bec | 3644 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3645 | __func__, buf, buflen, npages, args.acl_len); |
3646 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3647 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3648 | if (ret) |
3649 | goto out_free; | |
bf118a34 AA |
3650 | |
3651 | acl_len = res.acl_len - res.acl_data_offset; | |
3652 | if (acl_len > args.acl_len) | |
3653 | nfs4_write_cached_acl(inode, NULL, acl_len); | |
e50a1c2e | 3654 | else |
bf118a34 AA |
3655 | nfs4_write_cached_acl(inode, resp_buf + res.acl_data_offset, |
3656 | acl_len); | |
e50a1c2e BF |
3657 | if (buf) { |
3658 | ret = -ERANGE; | |
bf118a34 | 3659 | if (acl_len > buflen) |
e50a1c2e | 3660 | goto out_free; |
bf118a34 AA |
3661 | _copy_from_pages(buf, pages, res.acl_data_offset, |
3662 | res.acl_len); | |
e50a1c2e | 3663 | } |
bf118a34 | 3664 | ret = acl_len; |
e50a1c2e | 3665 | out_free: |
bf118a34 AA |
3666 | for (i = 0; i < npages; i++) |
3667 | if (pages[i]) | |
3668 | __free_page(pages[i]); | |
331818f1 TM |
3669 | if (res.acl_scratch) |
3670 | __free_page(res.acl_scratch); | |
aa1870af BF |
3671 | return ret; |
3672 | } | |
3673 | ||
16b4289c TM |
3674 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3675 | { | |
3676 | struct nfs4_exception exception = { }; | |
3677 | ssize_t ret; | |
3678 | do { | |
3679 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3680 | if (ret >= 0) | |
3681 | break; | |
3682 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3683 | } while (exception.retry); | |
3684 | return ret; | |
3685 | } | |
3686 | ||
e50a1c2e BF |
3687 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3688 | { | |
3689 | struct nfs_server *server = NFS_SERVER(inode); | |
3690 | int ret; | |
3691 | ||
3692 | if (!nfs4_server_supports_acls(server)) | |
3693 | return -EOPNOTSUPP; | |
3694 | ret = nfs_revalidate_inode(server, inode); | |
3695 | if (ret < 0) | |
3696 | return ret; | |
08a22b39 AK |
3697 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3698 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3699 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3700 | if (ret != -ENOENT) | |
bf118a34 AA |
3701 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3702 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3703 | return ret; |
3704 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3705 | } | |
3706 | ||
16b4289c | 3707 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3708 | { |
3709 | struct nfs_server *server = NFS_SERVER(inode); | |
3710 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3711 | struct nfs_setaclargs arg = { | |
3712 | .fh = NFS_FH(inode), | |
3713 | .acl_pages = pages, | |
3714 | .acl_len = buflen, | |
3715 | }; | |
73c403a9 | 3716 | struct nfs_setaclres res; |
4b580ee3 BF |
3717 | struct rpc_message msg = { |
3718 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3719 | .rpc_argp = &arg, | |
73c403a9 | 3720 | .rpc_resp = &res, |
4b580ee3 | 3721 | }; |
e9e3d724 | 3722 | int ret, i; |
4b580ee3 BF |
3723 | |
3724 | if (!nfs4_server_supports_acls(server)) | |
3725 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3726 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3727 | if (i < 0) | |
3728 | return i; | |
642ac549 | 3729 | nfs_inode_return_delegation(inode); |
7c513058 | 3730 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3731 | |
3732 | /* | |
3733 | * Free each page after tx, so the only ref left is | |
3734 | * held by the network stack | |
3735 | */ | |
3736 | for (; i > 0; i--) | |
3737 | put_page(pages[i-1]); | |
3738 | ||
08a22b39 AK |
3739 | /* |
3740 | * Acl update can result in inode attribute update. | |
3741 | * so mark the attribute cache invalid. | |
3742 | */ | |
3743 | spin_lock(&inode->i_lock); | |
3744 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3745 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3746 | nfs_access_zap_cache(inode); |
3747 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3748 | return ret; |
3749 | } | |
3750 | ||
16b4289c TM |
3751 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3752 | { | |
3753 | struct nfs4_exception exception = { }; | |
3754 | int err; | |
3755 | do { | |
3756 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3757 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3758 | &exception); | |
3759 | } while (exception.retry); | |
3760 | return err; | |
3761 | } | |
3762 | ||
1da177e4 | 3763 | static int |
aa5190d0 | 3764 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3765 | { |
aa5190d0 TM |
3766 | struct nfs_client *clp = server->nfs_client; |
3767 | ||
3768 | if (task->tk_status >= 0) | |
1da177e4 LT |
3769 | return 0; |
3770 | switch(task->tk_status) { | |
a1d0b5ee | 3771 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3772 | case -NFS4ERR_ADMIN_REVOKED: |
3773 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
3774 | if (state != NULL) |
3775 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3776 | case -NFS4ERR_OPENMODE: |
3777 | if (state == NULL) | |
3778 | break; | |
0400a6b0 TM |
3779 | nfs4_schedule_stateid_recovery(server, state); |
3780 | goto wait_on_recovery; | |
0ced63d1 TM |
3781 | case -NFS4ERR_EXPIRED: |
3782 | if (state != NULL) | |
3783 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3784 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3785 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3786 | nfs4_schedule_lease_recovery(clp); |
3787 | goto wait_on_recovery; | |
4745e315 AA |
3788 | #if defined(CONFIG_NFS_V4_1) |
3789 | case -NFS4ERR_BADSESSION: | |
3790 | case -NFS4ERR_BADSLOT: | |
3791 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3792 | case -NFS4ERR_DEADSESSION: | |
3793 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3794 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3795 | case -NFS4ERR_SEQ_MISORDERED: | |
3796 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3797 | task->tk_status); | |
0400a6b0 | 3798 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3799 | task->tk_status = 0; |
3800 | return -EAGAIN; | |
3801 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3802 | case -NFS4ERR_DELAY: |
aa5190d0 | 3803 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3804 | case -NFS4ERR_GRACE: |
2c643488 | 3805 | case -EKEYEXPIRED: |
1da177e4 LT |
3806 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3807 | task->tk_status = 0; | |
3808 | return -EAGAIN; | |
a8a4ae3a | 3809 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3810 | case -NFS4ERR_OLD_STATEID: |
3811 | task->tk_status = 0; | |
3812 | return -EAGAIN; | |
3813 | } | |
3814 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3815 | return 0; | |
0400a6b0 | 3816 | wait_on_recovery: |
a2c0b9e2 | 3817 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3818 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3819 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3820 | task->tk_status = 0; | |
3821 | return -EAGAIN; | |
1da177e4 LT |
3822 | } |
3823 | ||
cd93710e CL |
3824 | static void nfs4_construct_boot_verifier(struct nfs_client *clp, |
3825 | nfs4_verifier *bootverf) | |
3826 | { | |
3827 | __be32 verf[2]; | |
3828 | ||
3829 | verf[0] = htonl((u32)clp->cl_boot_time.tv_sec); | |
3830 | verf[1] = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3831 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); | |
3832 | } | |
3833 | ||
bb8b27e5 TM |
3834 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3835 | unsigned short port, struct rpc_cred *cred, | |
3836 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3837 | { |
3838 | nfs4_verifier sc_verifier; | |
3839 | struct nfs4_setclientid setclientid = { | |
3840 | .sc_verifier = &sc_verifier, | |
3841 | .sc_prog = program, | |
f4eecd5d | 3842 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3843 | }; |
3844 | struct rpc_message msg = { | |
3845 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3846 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3847 | .rpc_resp = res, |
286d7d6a | 3848 | .rpc_cred = cred, |
1da177e4 | 3849 | }; |
1da177e4 LT |
3850 | int loop = 0; |
3851 | int status; | |
3852 | ||
cd93710e | 3853 | nfs4_construct_boot_verifier(clp, &sc_verifier); |
1da177e4 LT |
3854 | |
3855 | for(;;) { | |
2446ab60 | 3856 | rcu_read_lock(); |
1da177e4 | 3857 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, |
69dd716c | 3858 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3859 | clp->cl_ipaddr, |
3860 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3861 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3862 | rpc_peeraddr2str(clp->cl_rpcclient, |
3863 | RPC_DISPLAY_PROTO), | |
78ea323b | 3864 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3865 | clp->cl_id_uniquifier); |
3866 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3867 | sizeof(setclientid.sc_netid), |
3868 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3869 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3870 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3871 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 | 3872 | clp->cl_ipaddr, port >> 8, port & 255); |
2446ab60 | 3873 | rcu_read_unlock(); |
1da177e4 | 3874 | |
1bd714f2 | 3875 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3876 | if (status != -NFS4ERR_CLID_INUSE) |
3877 | break; | |
fd954ae1 TM |
3878 | if (loop != 0) { |
3879 | ++clp->cl_id_uniquifier; | |
1da177e4 | 3880 | break; |
fd954ae1 TM |
3881 | } |
3882 | ++loop; | |
3883 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
3884 | } |
3885 | return status; | |
3886 | } | |
3887 | ||
fd954ae1 | 3888 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
3889 | struct nfs4_setclientid_res *arg, |
3890 | struct rpc_cred *cred) | |
1da177e4 LT |
3891 | { |
3892 | struct nfs_fsinfo fsinfo; | |
3893 | struct rpc_message msg = { | |
3894 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3895 | .rpc_argp = arg, |
1da177e4 | 3896 | .rpc_resp = &fsinfo, |
286d7d6a | 3897 | .rpc_cred = cred, |
1da177e4 LT |
3898 | }; |
3899 | unsigned long now; | |
3900 | int status; | |
3901 | ||
3902 | now = jiffies; | |
1bd714f2 | 3903 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3904 | if (status == 0) { |
3905 | spin_lock(&clp->cl_lock); | |
3906 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3907 | clp->cl_last_renewal = now; | |
3908 | spin_unlock(&clp->cl_lock); | |
3909 | } | |
3910 | return status; | |
3911 | } | |
3912 | ||
fe650407 TM |
3913 | struct nfs4_delegreturndata { |
3914 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3915 | struct nfs4_delegreturnres res; |
fe650407 TM |
3916 | struct nfs_fh fh; |
3917 | nfs4_stateid stateid; | |
26e976a8 | 3918 | unsigned long timestamp; |
fa178f29 | 3919 | struct nfs_fattr fattr; |
fe650407 TM |
3920 | int rpc_status; |
3921 | }; | |
3922 | ||
fe650407 TM |
3923 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3924 | { | |
3925 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3926 | |
14516c3a TM |
3927 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3928 | return; | |
938e1010 | 3929 | |
79708861 RL |
3930 | switch (task->tk_status) { |
3931 | case -NFS4ERR_STALE_STATEID: | |
3932 | case -NFS4ERR_EXPIRED: | |
3933 | case 0: | |
fa178f29 | 3934 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3935 | break; |
3936 | default: | |
3937 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3938 | -EAGAIN) { | |
d00c5d43 | 3939 | rpc_restart_call_prepare(task); |
79708861 RL |
3940 | return; |
3941 | } | |
3942 | } | |
3943 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3944 | } |
3945 | ||
3946 | static void nfs4_delegreturn_release(void *calldata) | |
3947 | { | |
fe650407 TM |
3948 | kfree(calldata); |
3949 | } | |
3950 | ||
938e1010 AA |
3951 | #if defined(CONFIG_NFS_V4_1) |
3952 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3953 | { | |
3954 | struct nfs4_delegreturndata *d_data; | |
3955 | ||
3956 | d_data = (struct nfs4_delegreturndata *)data; | |
3957 | ||
035168ab | 3958 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 3959 | &d_data->args.seq_args, |
9d12b216 | 3960 | &d_data->res.seq_res, task)) |
938e1010 AA |
3961 | return; |
3962 | rpc_call_start(task); | |
3963 | } | |
3964 | #endif /* CONFIG_NFS_V4_1 */ | |
3965 | ||
c8d149f3 | 3966 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3967 | #if defined(CONFIG_NFS_V4_1) |
3968 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3969 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3970 | .rpc_call_done = nfs4_delegreturn_done, |
3971 | .rpc_release = nfs4_delegreturn_release, | |
3972 | }; | |
3973 | ||
e6f81075 | 3974 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3975 | { |
3976 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3977 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3978 | struct rpc_task *task; |
5138fde0 TM |
3979 | struct rpc_message msg = { |
3980 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3981 | .rpc_cred = cred, | |
3982 | }; | |
c970aa85 TM |
3983 | struct rpc_task_setup task_setup_data = { |
3984 | .rpc_client = server->client, | |
5138fde0 | 3985 | .rpc_message = &msg, |
c970aa85 TM |
3986 | .callback_ops = &nfs4_delegreturn_ops, |
3987 | .flags = RPC_TASK_ASYNC, | |
3988 | }; | |
e6f81075 | 3989 | int status = 0; |
fe650407 | 3990 | |
8535b2be | 3991 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3992 | if (data == NULL) |
3993 | return -ENOMEM; | |
9d12b216 | 3994 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
3995 | data->args.fhandle = &data->fh; |
3996 | data->args.stateid = &data->stateid; | |
fa178f29 | 3997 | data->args.bitmask = server->attr_bitmask; |
fe650407 | 3998 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 3999 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4000 | data->res.fattr = &data->fattr; |
4001 | data->res.server = server; | |
5138fde0 | 4002 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4003 | data->timestamp = jiffies; |
fe650407 TM |
4004 | data->rpc_status = 0; |
4005 | ||
c970aa85 | 4006 | task_setup_data.callback_data = data; |
1174dd1f TM |
4007 | msg.rpc_argp = &data->args; |
4008 | msg.rpc_resp = &data->res; | |
c970aa85 | 4009 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4010 | if (IS_ERR(task)) |
fe650407 | 4011 | return PTR_ERR(task); |
e6f81075 TM |
4012 | if (!issync) |
4013 | goto out; | |
fe650407 | 4014 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4015 | if (status != 0) |
4016 | goto out; | |
4017 | status = data->rpc_status; | |
4018 | if (status != 0) | |
4019 | goto out; | |
4020 | nfs_refresh_inode(inode, &data->fattr); | |
4021 | out: | |
e6b3c4db | 4022 | rpc_put_task(task); |
fe650407 | 4023 | return status; |
1da177e4 LT |
4024 | } |
4025 | ||
e6f81075 | 4026 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4027 | { |
4028 | struct nfs_server *server = NFS_SERVER(inode); | |
4029 | struct nfs4_exception exception = { }; | |
4030 | int err; | |
4031 | do { | |
e6f81075 | 4032 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4033 | switch (err) { |
4034 | case -NFS4ERR_STALE_STATEID: | |
4035 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4036 | case 0: |
4037 | return 0; | |
4038 | } | |
4039 | err = nfs4_handle_exception(server, err, &exception); | |
4040 | } while (exception.retry); | |
4041 | return err; | |
4042 | } | |
4043 | ||
4044 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4045 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4046 | ||
4047 | /* | |
4048 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4049 | */ | |
4050 | static unsigned long | |
4051 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4052 | { | |
d310310c | 4053 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4054 | timeout <<= 1; |
4055 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4056 | return NFS4_LOCK_MAXTIMEOUT; | |
4057 | return timeout; | |
4058 | } | |
4059 | ||
1da177e4 LT |
4060 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4061 | { | |
4062 | struct inode *inode = state->inode; | |
4063 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4064 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4065 | struct nfs_lockt_args arg = { |
1da177e4 | 4066 | .fh = NFS_FH(inode), |
911d1aaf | 4067 | .fl = request, |
1da177e4 | 4068 | }; |
911d1aaf TM |
4069 | struct nfs_lockt_res res = { |
4070 | .denied = request, | |
1da177e4 LT |
4071 | }; |
4072 | struct rpc_message msg = { | |
4073 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4074 | .rpc_argp = &arg, | |
4075 | .rpc_resp = &res, | |
4076 | .rpc_cred = state->owner->so_cred, | |
4077 | }; | |
1da177e4 LT |
4078 | struct nfs4_lock_state *lsp; |
4079 | int status; | |
4080 | ||
911d1aaf | 4081 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4082 | status = nfs4_set_lock_state(state, request); |
4083 | if (status != 0) | |
4084 | goto out; | |
4085 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4086 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4087 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4088 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4089 | switch (status) { |
4090 | case 0: | |
4091 | request->fl_type = F_UNLCK; | |
4092 | break; | |
4093 | case -NFS4ERR_DENIED: | |
4094 | status = 0; | |
1da177e4 | 4095 | } |
70cc6487 | 4096 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4097 | out: |
1da177e4 LT |
4098 | return status; |
4099 | } | |
4100 | ||
4101 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4102 | { | |
4103 | struct nfs4_exception exception = { }; | |
4104 | int err; | |
4105 | ||
4106 | do { | |
4107 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4108 | _nfs4_proc_getlk(state, cmd, request), | |
4109 | &exception); | |
4110 | } while (exception.retry); | |
4111 | return err; | |
4112 | } | |
4113 | ||
4114 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4115 | { | |
4116 | int res = 0; | |
4117 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4118 | case FL_POSIX: | |
4119 | res = posix_lock_file_wait(file, fl); | |
4120 | break; | |
4121 | case FL_FLOCK: | |
4122 | res = flock_lock_file_wait(file, fl); | |
4123 | break; | |
4124 | default: | |
4125 | BUG(); | |
4126 | } | |
1da177e4 LT |
4127 | return res; |
4128 | } | |
4129 | ||
faf5f49c | 4130 | struct nfs4_unlockdata { |
911d1aaf TM |
4131 | struct nfs_locku_args arg; |
4132 | struct nfs_locku_res res; | |
faf5f49c TM |
4133 | struct nfs4_lock_state *lsp; |
4134 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4135 | struct file_lock fl; |
4136 | const struct nfs_server *server; | |
26e976a8 | 4137 | unsigned long timestamp; |
faf5f49c TM |
4138 | }; |
4139 | ||
911d1aaf TM |
4140 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4141 | struct nfs_open_context *ctx, | |
4142 | struct nfs4_lock_state *lsp, | |
4143 | struct nfs_seqid *seqid) | |
4144 | { | |
4145 | struct nfs4_unlockdata *p; | |
4146 | struct inode *inode = lsp->ls_state->inode; | |
4147 | ||
8535b2be | 4148 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4149 | if (p == NULL) |
4150 | return NULL; | |
4151 | p->arg.fh = NFS_FH(inode); | |
4152 | p->arg.fl = &p->fl; | |
4153 | p->arg.seqid = seqid; | |
c1d51931 | 4154 | p->res.seqid = seqid; |
911d1aaf TM |
4155 | p->arg.stateid = &lsp->ls_stateid; |
4156 | p->lsp = lsp; | |
4157 | atomic_inc(&lsp->ls_count); | |
4158 | /* Ensure we don't close file until we're done freeing locks! */ | |
4159 | p->ctx = get_nfs_open_context(ctx); | |
4160 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4161 | p->server = NFS_SERVER(inode); | |
4162 | return p; | |
4163 | } | |
4164 | ||
06f814a3 | 4165 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4166 | { |
963d8fe5 | 4167 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4168 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4169 | nfs4_put_lock_state(calldata->lsp); |
4170 | put_nfs_open_context(calldata->ctx); | |
4171 | kfree(calldata); | |
faf5f49c TM |
4172 | } |
4173 | ||
963d8fe5 | 4174 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4175 | { |
963d8fe5 | 4176 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4177 | |
14516c3a TM |
4178 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4179 | return; | |
faf5f49c TM |
4180 | switch (task->tk_status) { |
4181 | case 0: | |
f597c537 TM |
4182 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4183 | &calldata->res.stateid); | |
26e976a8 | 4184 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4185 | break; |
9e33bed5 TM |
4186 | case -NFS4ERR_BAD_STATEID: |
4187 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4188 | case -NFS4ERR_STALE_STATEID: |
4189 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4190 | break; |
4191 | default: | |
9e33bed5 | 4192 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4193 | rpc_restart_call_prepare(task); |
faf5f49c | 4194 | } |
faf5f49c TM |
4195 | } |
4196 | ||
4ce70ada | 4197 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4198 | { |
4ce70ada | 4199 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4200 | |
911d1aaf | 4201 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4202 | return; |
4203 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4204 | /* Note: exit _without_ running nfs4_locku_done */ |
4205 | task->tk_action = NULL; | |
faf5f49c TM |
4206 | return; |
4207 | } | |
26e976a8 | 4208 | calldata->timestamp = jiffies; |
035168ab | 4209 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4210 | &calldata->arg.seq_args, |
9d12b216 | 4211 | &calldata->res.seq_res, task)) |
a893693c | 4212 | return; |
5138fde0 | 4213 | rpc_call_start(task); |
faf5f49c TM |
4214 | } |
4215 | ||
963d8fe5 | 4216 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4217 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4218 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4219 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4220 | }; |
4221 | ||
a5d16a4d TM |
4222 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4223 | struct nfs_open_context *ctx, | |
4224 | struct nfs4_lock_state *lsp, | |
4225 | struct nfs_seqid *seqid) | |
4226 | { | |
4227 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4228 | struct rpc_message msg = { |
4229 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4230 | .rpc_cred = ctx->cred, | |
4231 | }; | |
c970aa85 TM |
4232 | struct rpc_task_setup task_setup_data = { |
4233 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4234 | .rpc_message = &msg, |
c970aa85 | 4235 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4236 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4237 | .flags = RPC_TASK_ASYNC, |
4238 | }; | |
a5d16a4d | 4239 | |
137d6aca FF |
4240 | /* Ensure this is an unlock - when canceling a lock, the |
4241 | * canceled lock is passed in, and it won't be an unlock. | |
4242 | */ | |
4243 | fl->fl_type = F_UNLCK; | |
4244 | ||
a5d16a4d TM |
4245 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4246 | if (data == NULL) { | |
4247 | nfs_free_seqid(seqid); | |
4248 | return ERR_PTR(-ENOMEM); | |
4249 | } | |
4250 | ||
9d12b216 | 4251 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4252 | msg.rpc_argp = &data->arg; |
4253 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4254 | task_setup_data.callback_data = data; |
4255 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4256 | } |
4257 | ||
faf5f49c TM |
4258 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4259 | { | |
19e03c57 | 4260 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4261 | struct nfs_seqid *seqid; |
1da177e4 | 4262 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4263 | struct rpc_task *task; |
4264 | int status = 0; | |
536ff0f8 | 4265 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4266 | |
8d0a8a9d | 4267 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4268 | /* Unlock _before_ we do the RPC call */ |
4269 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4270 | down_read(&nfsi->rwsem); |
4271 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4272 | up_read(&nfsi->rwsem); | |
9b073574 | 4273 | goto out; |
19e03c57 TM |
4274 | } |
4275 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4276 | if (status != 0) |
9b073574 TM |
4277 | goto out; |
4278 | /* Is this a delegated lock? */ | |
4279 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4280 | goto out; | |
8d0a8a9d | 4281 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4282 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4283 | status = -ENOMEM; |
911d1aaf | 4284 | if (seqid == NULL) |
9b073574 | 4285 | goto out; |
cd3758e3 | 4286 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4287 | status = PTR_ERR(task); |
4288 | if (IS_ERR(task)) | |
9b073574 | 4289 | goto out; |
a5d16a4d | 4290 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4291 | rpc_put_task(task); |
9b073574 | 4292 | out: |
536ff0f8 | 4293 | request->fl_flags = fl_flags; |
1da177e4 LT |
4294 | return status; |
4295 | } | |
4296 | ||
a5d16a4d TM |
4297 | struct nfs4_lockdata { |
4298 | struct nfs_lock_args arg; | |
4299 | struct nfs_lock_res res; | |
4300 | struct nfs4_lock_state *lsp; | |
4301 | struct nfs_open_context *ctx; | |
4302 | struct file_lock fl; | |
26e976a8 | 4303 | unsigned long timestamp; |
a5d16a4d TM |
4304 | int rpc_status; |
4305 | int cancelled; | |
66179efe | 4306 | struct nfs_server *server; |
a5d16a4d TM |
4307 | }; |
4308 | ||
4309 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4310 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4311 | gfp_t gfp_mask) | |
1da177e4 | 4312 | { |
a5d16a4d TM |
4313 | struct nfs4_lockdata *p; |
4314 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4315 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4316 | |
8535b2be | 4317 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4318 | if (p == NULL) |
4319 | return NULL; | |
4320 | ||
4321 | p->arg.fh = NFS_FH(inode); | |
4322 | p->arg.fl = &p->fl; | |
8535b2be | 4323 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4324 | if (p->arg.open_seqid == NULL) |
4325 | goto out_free; | |
8535b2be | 4326 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4327 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4328 | goto out_free_seqid; |
a5d16a4d | 4329 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4330 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4331 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4332 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4333 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4334 | p->lsp = lsp; |
66179efe | 4335 | p->server = server; |
a5d16a4d TM |
4336 | atomic_inc(&lsp->ls_count); |
4337 | p->ctx = get_nfs_open_context(ctx); | |
4338 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4339 | return p; | |
2f74c0a0 TM |
4340 | out_free_seqid: |
4341 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4342 | out_free: |
4343 | kfree(p); | |
4344 | return NULL; | |
4345 | } | |
4346 | ||
4347 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4348 | { | |
4349 | struct nfs4_lockdata *data = calldata; | |
4350 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4351 | |
3110ff80 | 4352 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4353 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4354 | return; | |
a5d16a4d TM |
4355 | /* Do we need to do an open_to_lock_owner? */ |
4356 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4357 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4358 | return; | |
a5d16a4d TM |
4359 | data->arg.open_stateid = &state->stateid; |
4360 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4361 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4362 | } else |
4363 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4364 | data->timestamp = jiffies; |
035168ab TM |
4365 | if (nfs4_setup_sequence(data->server, |
4366 | &data->arg.seq_args, | |
9d12b216 | 4367 | &data->res.seq_res, task)) |
66179efe | 4368 | return; |
5138fde0 | 4369 | rpc_call_start(task); |
3110ff80 | 4370 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4371 | } |
4372 | ||
b257957e AB |
4373 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4374 | { | |
4375 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4376 | nfs4_lock_prepare(task, calldata); | |
4377 | } | |
4378 | ||
a5d16a4d TM |
4379 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4380 | { | |
4381 | struct nfs4_lockdata *data = calldata; | |
4382 | ||
3110ff80 | 4383 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4384 | |
14516c3a TM |
4385 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4386 | return; | |
66179efe | 4387 | |
a5d16a4d | 4388 | data->rpc_status = task->tk_status; |
a5d16a4d | 4389 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4390 | if (data->rpc_status == 0) |
4391 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4392 | else | |
4393 | goto out; | |
4394 | } | |
4395 | if (data->rpc_status == 0) { | |
f597c537 | 4396 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
a5d16a4d | 4397 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; |
3d4ff43d | 4398 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4399 | } |
a5d16a4d | 4400 | out: |
3110ff80 | 4401 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4402 | } |
4403 | ||
4404 | static void nfs4_lock_release(void *calldata) | |
4405 | { | |
4406 | struct nfs4_lockdata *data = calldata; | |
4407 | ||
3110ff80 | 4408 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4409 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4410 | if (data->cancelled != 0) { |
4411 | struct rpc_task *task; | |
4412 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4413 | data->arg.lock_seqid); | |
4414 | if (!IS_ERR(task)) | |
bf294b41 | 4415 | rpc_put_task_async(task); |
3110ff80 | 4416 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4417 | } else |
4418 | nfs_free_seqid(data->arg.lock_seqid); | |
4419 | nfs4_put_lock_state(data->lsp); | |
4420 | put_nfs_open_context(data->ctx); | |
4421 | kfree(data); | |
3110ff80 | 4422 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4423 | } |
4424 | ||
4425 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4426 | .rpc_call_prepare = nfs4_lock_prepare, | |
4427 | .rpc_call_done = nfs4_lock_done, | |
4428 | .rpc_release = nfs4_lock_release, | |
4429 | }; | |
4430 | ||
b257957e AB |
4431 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4432 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4433 | .rpc_call_done = nfs4_lock_done, | |
4434 | .rpc_release = nfs4_lock_release, | |
4435 | }; | |
4436 | ||
2bee72a6 TM |
4437 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4438 | { | |
2bee72a6 TM |
4439 | switch (error) { |
4440 | case -NFS4ERR_ADMIN_REVOKED: | |
4441 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4442 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4443 | if (new_lock_owner != 0 || |
4444 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4445 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4446 | break; |
4447 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4448 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4449 | case -NFS4ERR_EXPIRED: |
4450 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4451 | }; |
4452 | } | |
4453 | ||
afe6c27c | 4454 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4455 | { |
4456 | struct nfs4_lockdata *data; | |
4457 | struct rpc_task *task; | |
5138fde0 TM |
4458 | struct rpc_message msg = { |
4459 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4460 | .rpc_cred = state->owner->so_cred, | |
4461 | }; | |
c970aa85 TM |
4462 | struct rpc_task_setup task_setup_data = { |
4463 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4464 | .rpc_message = &msg, |
c970aa85 | 4465 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4466 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4467 | .flags = RPC_TASK_ASYNC, |
4468 | }; | |
a5d16a4d TM |
4469 | int ret; |
4470 | ||
3110ff80 | 4471 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4472 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4473 | fl->fl_u.nfs4_fl.owner, |
4474 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4475 | if (data == NULL) |
4476 | return -ENOMEM; | |
4477 | if (IS_SETLKW(cmd)) | |
4478 | data->arg.block = 1; | |
b257957e AB |
4479 | if (recovery_type > NFS_LOCK_NEW) { |
4480 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4481 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4482 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4483 | } | |
9d12b216 | 4484 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4485 | msg.rpc_argp = &data->arg; |
4486 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4487 | task_setup_data.callback_data = data; |
4488 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4489 | if (IS_ERR(task)) |
a5d16a4d | 4490 | return PTR_ERR(task); |
a5d16a4d TM |
4491 | ret = nfs4_wait_for_completion_rpc_task(task); |
4492 | if (ret == 0) { | |
4493 | ret = data->rpc_status; | |
2bee72a6 TM |
4494 | if (ret) |
4495 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4496 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4497 | } else |
4498 | data->cancelled = 1; | |
e6b3c4db | 4499 | rpc_put_task(task); |
3110ff80 | 4500 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4501 | return ret; |
1da177e4 LT |
4502 | } |
4503 | ||
4504 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4505 | { | |
202b50dc TM |
4506 | struct nfs_server *server = NFS_SERVER(state->inode); |
4507 | struct nfs4_exception exception = { }; | |
4508 | int err; | |
4509 | ||
4510 | do { | |
42a2d13e TM |
4511 | /* Cache the lock if possible... */ |
4512 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4513 | return 0; | |
afe6c27c | 4514 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4515 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4516 | break; |
4517 | nfs4_handle_exception(server, err, &exception); | |
4518 | } while (exception.retry); | |
4519 | return err; | |
1da177e4 LT |
4520 | } |
4521 | ||
4522 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4523 | { | |
202b50dc TM |
4524 | struct nfs_server *server = NFS_SERVER(state->inode); |
4525 | struct nfs4_exception exception = { }; | |
4526 | int err; | |
4527 | ||
6bfc93ef TM |
4528 | err = nfs4_set_lock_state(state, request); |
4529 | if (err != 0) | |
4530 | return err; | |
202b50dc | 4531 | do { |
42a2d13e TM |
4532 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4533 | return 0; | |
afe6c27c | 4534 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4535 | switch (err) { |
4536 | default: | |
4537 | goto out; | |
4538 | case -NFS4ERR_GRACE: | |
4539 | case -NFS4ERR_DELAY: | |
4540 | nfs4_handle_exception(server, err, &exception); | |
4541 | err = 0; | |
4542 | } | |
202b50dc | 4543 | } while (exception.retry); |
a9ed2e25 | 4544 | out: |
202b50dc | 4545 | return err; |
1da177e4 LT |
4546 | } |
4547 | ||
f062eb6c | 4548 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 4549 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4550 | { |
b01dd1d8 BS |
4551 | int status, ret = NFS_OK; |
4552 | struct nfs4_lock_state *lsp; | |
f062eb6c BS |
4553 | struct nfs_server *server = NFS_SERVER(state->inode); |
4554 | ||
b01dd1d8 BS |
4555 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
4556 | if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { | |
4557 | status = nfs41_test_stateid(server, &lsp->ls_stateid); | |
4558 | if (status != NFS_OK) { | |
4559 | nfs41_free_stateid(server, &lsp->ls_stateid); | |
4560 | lsp->ls_flags &= ~NFS_LOCK_INITIALIZED; | |
4561 | ret = status; | |
4562 | } | |
4563 | } | |
4564 | }; | |
4565 | ||
4566 | return ret; | |
4567 | } | |
4568 | ||
4569 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4570 | { | |
4571 | int status = NFS_OK; | |
4572 | ||
4573 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4574 | status = nfs41_check_expired_locks(state); | |
f062eb6c | 4575 | if (status == NFS_OK) |
b01dd1d8 | 4576 | return status; |
f062eb6c BS |
4577 | return nfs4_lock_expired(state, request); |
4578 | } | |
4579 | #endif | |
4580 | ||
1da177e4 LT |
4581 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4582 | { | |
19e03c57 | 4583 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4584 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4585 | int status = -ENOLCK; |
1da177e4 | 4586 | |
8e469ebd TM |
4587 | if ((fl_flags & FL_POSIX) && |
4588 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4589 | goto out; | |
6bfc93ef | 4590 | /* Is this a delegated open? */ |
6bfc93ef TM |
4591 | status = nfs4_set_lock_state(state, request); |
4592 | if (status != 0) | |
4593 | goto out; | |
01c3b861 TM |
4594 | request->fl_flags |= FL_ACCESS; |
4595 | status = do_vfs_lock(request->fl_file, request); | |
4596 | if (status < 0) | |
4597 | goto out; | |
19e03c57 | 4598 | down_read(&nfsi->rwsem); |
01c3b861 | 4599 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4600 | /* Yes: cache locks! */ |
01c3b861 | 4601 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4602 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4603 | status = do_vfs_lock(request->fl_file, request); | |
4604 | goto out_unlock; | |
01c3b861 | 4605 | } |
afe6c27c | 4606 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4607 | if (status != 0) |
01c3b861 | 4608 | goto out_unlock; |
6bfc93ef | 4609 | /* Note: we always want to sleep here! */ |
01c3b861 | 4610 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4611 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4612 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4613 | "manager!\n", __func__); | |
01c3b861 | 4614 | out_unlock: |
19e03c57 | 4615 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4616 | out: |
4617 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4618 | return status; |
4619 | } | |
4620 | ||
4621 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4622 | { | |
a1d0b5ee TM |
4623 | struct nfs4_exception exception = { |
4624 | .state = state, | |
4625 | }; | |
1da177e4 LT |
4626 | int err; |
4627 | ||
4628 | do { | |
965b5d67 TM |
4629 | err = _nfs4_proc_setlk(state, cmd, request); |
4630 | if (err == -NFS4ERR_DENIED) | |
4631 | err = -EAGAIN; | |
1da177e4 | 4632 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4633 | err, &exception); |
1da177e4 LT |
4634 | } while (exception.retry); |
4635 | return err; | |
4636 | } | |
4637 | ||
4638 | static int | |
4639 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4640 | { | |
4641 | struct nfs_open_context *ctx; | |
4642 | struct nfs4_state *state; | |
4643 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4644 | int status; | |
4645 | ||
4646 | /* verify open state */ | |
cd3758e3 | 4647 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4648 | state = ctx->state; |
4649 | ||
4650 | if (request->fl_start < 0 || request->fl_end < 0) | |
4651 | return -EINVAL; | |
4652 | ||
d953126a TM |
4653 | if (IS_GETLK(cmd)) { |
4654 | if (state != NULL) | |
4655 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4656 | return 0; | |
4657 | } | |
1da177e4 LT |
4658 | |
4659 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4660 | return -EINVAL; | |
4661 | ||
d953126a TM |
4662 | if (request->fl_type == F_UNLCK) { |
4663 | if (state != NULL) | |
4664 | return nfs4_proc_unlck(state, cmd, request); | |
4665 | return 0; | |
4666 | } | |
1da177e4 | 4667 | |
d953126a TM |
4668 | if (state == NULL) |
4669 | return -ENOLCK; | |
1da177e4 LT |
4670 | do { |
4671 | status = nfs4_proc_setlk(state, cmd, request); | |
4672 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4673 | break; | |
4674 | timeout = nfs4_set_lock_task_retry(timeout); | |
4675 | status = -ERESTARTSYS; | |
4676 | if (signalled()) | |
4677 | break; | |
4678 | } while(status < 0); | |
1da177e4 LT |
4679 | return status; |
4680 | } | |
4681 | ||
888e694c TM |
4682 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4683 | { | |
4684 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4685 | struct nfs4_exception exception = { }; | |
4686 | int err; | |
4687 | ||
4688 | err = nfs4_set_lock_state(state, fl); | |
4689 | if (err != 0) | |
4690 | goto out; | |
4691 | do { | |
afe6c27c | 4692 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4693 | switch (err) { |
4694 | default: | |
a030889a WAA |
4695 | printk(KERN_ERR "NFS: %s: unhandled error " |
4696 | "%d.\n", __func__, err); | |
d5122201 | 4697 | case 0: |
965b5d67 | 4698 | case -ESTALE: |
d5122201 TM |
4699 | goto out; |
4700 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4701 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4702 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4703 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4704 | nfs4_schedule_lease_recovery(server->nfs_client); |
4705 | goto out; | |
74e7bb73 RL |
4706 | case -NFS4ERR_BADSESSION: |
4707 | case -NFS4ERR_BADSLOT: | |
4708 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4709 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4710 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4711 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4712 | goto out; |
965b5d67 TM |
4713 | case -ERESTARTSYS: |
4714 | /* | |
4715 | * The show must go on: exit, but mark the | |
4716 | * stateid as needing recovery. | |
4717 | */ | |
a1d0b5ee | 4718 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
4719 | case -NFS4ERR_ADMIN_REVOKED: |
4720 | case -NFS4ERR_BAD_STATEID: | |
4721 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4722 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4723 | err = 0; |
4724 | goto out; | |
168667c4 TM |
4725 | case -EKEYEXPIRED: |
4726 | /* | |
4727 | * User RPCSEC_GSS context has expired. | |
4728 | * We cannot recover this stateid now, so | |
4729 | * skip it and allow recovery thread to | |
4730 | * proceed. | |
4731 | */ | |
4732 | err = 0; | |
4733 | goto out; | |
965b5d67 TM |
4734 | case -ENOMEM: |
4735 | case -NFS4ERR_DENIED: | |
4736 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4737 | err = 0; | |
4738 | goto out; | |
d5122201 TM |
4739 | case -NFS4ERR_DELAY: |
4740 | break; | |
4741 | } | |
888e694c TM |
4742 | err = nfs4_handle_exception(server, err, &exception); |
4743 | } while (exception.retry); | |
4744 | out: | |
4745 | return err; | |
4746 | } | |
6b3b5496 | 4747 | |
cf470c3e TM |
4748 | struct nfs_release_lockowner_data { |
4749 | struct nfs4_lock_state *lsp; | |
4750 | struct nfs_release_lockowner_args args; | |
4751 | }; | |
4752 | ||
d3c7b7cc TM |
4753 | static void nfs4_release_lockowner_release(void *calldata) |
4754 | { | |
cf470c3e TM |
4755 | struct nfs_release_lockowner_data *data = calldata; |
4756 | nfs4_free_lock_state(data->lsp); | |
d3c7b7cc TM |
4757 | kfree(calldata); |
4758 | } | |
4759 | ||
4760 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4761 | .rpc_release = nfs4_release_lockowner_release, | |
4762 | }; | |
4763 | ||
cf470c3e | 4764 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
4765 | { |
4766 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 4767 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
4768 | struct rpc_message msg = { |
4769 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4770 | }; | |
4771 | ||
4772 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
4773 | return -EINVAL; |
4774 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
4775 | if (!data) | |
4776 | return -ENOMEM; | |
4777 | data->lsp = lsp; | |
4778 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; | |
4779 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
4780 | data->args.lock_owner.s_dev = server->s_dev; | |
4781 | msg.rpc_argp = &data->args; | |
4782 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
4783 | return 0; | |
d3c7b7cc TM |
4784 | } |
4785 | ||
aa1870af BF |
4786 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4787 | ||
64c2ce8b AK |
4788 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4789 | const void *buf, size_t buflen, | |
4790 | int flags, int type) | |
6b3b5496 | 4791 | { |
64c2ce8b AK |
4792 | if (strcmp(key, "") != 0) |
4793 | return -EINVAL; | |
4b580ee3 | 4794 | |
64c2ce8b | 4795 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4796 | } |
4797 | ||
64c2ce8b AK |
4798 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4799 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4800 | { |
64c2ce8b AK |
4801 | if (strcmp(key, "") != 0) |
4802 | return -EINVAL; | |
aa1870af | 4803 | |
64c2ce8b | 4804 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4805 | } |
4806 | ||
64c2ce8b AK |
4807 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4808 | size_t list_len, const char *name, | |
4809 | size_t name_len, int type) | |
6b3b5496 | 4810 | { |
64c2ce8b | 4811 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4812 | |
096455a2 BF |
4813 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4814 | return 0; | |
64c2ce8b AK |
4815 | |
4816 | if (list && len <= list_len) | |
4817 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4818 | return len; |
6b3b5496 BF |
4819 | } |
4820 | ||
533eb461 AA |
4821 | /* |
4822 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4823 | */ | |
69aaaae1 TM |
4824 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4825 | { | |
533eb461 AA |
4826 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4827 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4828 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 4829 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
4830 | return; |
4831 | ||
4832 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 4833 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
4834 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
4835 | fattr->nlink = 2; | |
4836 | } | |
4837 | ||
56659e99 | 4838 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4839 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4840 | { |
4841 | struct nfs_server *server = NFS_SERVER(dir); | |
4842 | u32 bitmask[2] = { | |
361e624f | 4843 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
4844 | }; |
4845 | struct nfs4_fs_locations_arg args = { | |
4846 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4847 | .name = name, |
683b57b4 TM |
4848 | .page = page, |
4849 | .bitmask = bitmask, | |
4850 | }; | |
22958463 BH |
4851 | struct nfs4_fs_locations_res res = { |
4852 | .fs_locations = fs_locations, | |
4853 | }; | |
683b57b4 TM |
4854 | struct rpc_message msg = { |
4855 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4856 | .rpc_argp = &args, | |
22958463 | 4857 | .rpc_resp = &res, |
683b57b4 TM |
4858 | }; |
4859 | int status; | |
4860 | ||
3110ff80 | 4861 | dprintk("%s: start\n", __func__); |
533eb461 AA |
4862 | |
4863 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
4864 | * is not supported */ | |
4865 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
4866 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
4867 | else | |
4868 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
4869 | ||
c228fd3a | 4870 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4871 | fs_locations->server = server; |
830b8e33 | 4872 | fs_locations->nlocations = 0; |
7c513058 | 4873 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 4874 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4875 | return status; |
4876 | } | |
4877 | ||
5a5ea0d4 BS |
4878 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
4879 | { | |
4880 | int status; | |
4881 | struct nfs4_secinfo_arg args = { | |
4882 | .dir_fh = NFS_FH(dir), | |
4883 | .name = name, | |
4884 | }; | |
4885 | struct nfs4_secinfo_res res = { | |
4886 | .flavors = flavors, | |
4887 | }; | |
4888 | struct rpc_message msg = { | |
4889 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
4890 | .rpc_argp = &args, | |
4891 | .rpc_resp = &res, | |
4892 | }; | |
4893 | ||
4894 | dprintk("NFS call secinfo %s\n", name->name); | |
4895 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
4896 | dprintk("NFS reply secinfo: %d\n", status); | |
4897 | return status; | |
4898 | } | |
4899 | ||
4900 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) | |
4901 | { | |
4902 | struct nfs4_exception exception = { }; | |
4903 | int err; | |
4904 | do { | |
4905 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
4906 | _nfs4_proc_secinfo(dir, name, flavors), | |
4907 | &exception); | |
4908 | } while (exception.retry); | |
4909 | return err; | |
4910 | } | |
4911 | ||
557134a3 | 4912 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4913 | /* |
4914 | * Check the exchange flags returned by the server for invalid flags, having | |
4915 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4916 | * DS flags set. | |
4917 | */ | |
4918 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4919 | { | |
4920 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4921 | goto out_inval; | |
4922 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4923 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4924 | goto out_inval; | |
4925 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4926 | goto out_inval; | |
4927 | return NFS_OK; | |
4928 | out_inval: | |
4929 | return -NFS4ERR_INVAL; | |
4930 | } | |
4931 | ||
78fe0f41 WAA |
4932 | static bool |
4933 | nfs41_same_server_scope(struct server_scope *a, struct server_scope *b) | |
4934 | { | |
4935 | if (a->server_scope_sz == b->server_scope_sz && | |
4936 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
4937 | return true; | |
4938 | ||
4939 | return false; | |
4940 | } | |
4941 | ||
99fe60d0 BH |
4942 | /* |
4943 | * nfs4_proc_exchange_id() | |
4944 | * | |
4945 | * Since the clientid has expired, all compounds using sessions | |
4946 | * associated with the stale clientid will be returning | |
4947 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4948 | * be in some phase of session reset. | |
4949 | */ | |
4d643d1d | 4950 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4951 | { |
4952 | nfs4_verifier verifier; | |
4953 | struct nfs41_exchange_id_args args = { | |
cd93710e | 4954 | .verifier = &verifier, |
99fe60d0 | 4955 | .client = clp, |
357f54d6 | 4956 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4957 | }; |
4958 | struct nfs41_exchange_id_res res = { | |
4959 | .client = clp, | |
4960 | }; | |
4961 | int status; | |
4962 | struct rpc_message msg = { | |
4963 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4964 | .rpc_argp = &args, | |
4965 | .rpc_resp = &res, | |
4966 | .rpc_cred = cred, | |
4967 | }; | |
99fe60d0 BH |
4968 | |
4969 | dprintk("--> %s\n", __func__); | |
4970 | BUG_ON(clp == NULL); | |
a7b72103 | 4971 | |
cd93710e | 4972 | nfs4_construct_boot_verifier(clp, &verifier); |
99fe60d0 | 4973 | |
c7a360b0 AA |
4974 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4975 | "%s/%s.%s/%u", | |
4976 | clp->cl_ipaddr, | |
4977 | init_utsname()->nodename, | |
4978 | init_utsname()->domainname, | |
4979 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4980 | |
78fe0f41 | 4981 | res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); |
9edbd953 WAA |
4982 | if (unlikely(!res.server_scope)) { |
4983 | status = -ENOMEM; | |
4984 | goto out; | |
4985 | } | |
78fe0f41 | 4986 | |
7d2ed9ac WAA |
4987 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_KERNEL); |
4988 | if (unlikely(!res.impl_id)) { | |
4989 | status = -ENOMEM; | |
4990 | goto out_server_scope; | |
4991 | } | |
4992 | ||
1bd714f2 | 4993 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c7a360b0 AA |
4994 | if (!status) |
4995 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
78fe0f41 | 4996 | |
7d2ed9ac WAA |
4997 | if (!status) { |
4998 | /* use the most recent implementation id */ | |
4999 | kfree(clp->impl_id); | |
5000 | clp->impl_id = res.impl_id; | |
5001 | } else | |
5002 | kfree(res.impl_id); | |
5003 | ||
78fe0f41 WAA |
5004 | if (!status) { |
5005 | if (clp->server_scope && | |
5006 | !nfs41_same_server_scope(clp->server_scope, | |
5007 | res.server_scope)) { | |
5008 | dprintk("%s: server_scope mismatch detected\n", | |
5009 | __func__); | |
5010 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
5011 | kfree(clp->server_scope); | |
5012 | clp->server_scope = NULL; | |
5013 | } | |
5014 | ||
9edbd953 | 5015 | if (!clp->server_scope) { |
78fe0f41 | 5016 | clp->server_scope = res.server_scope; |
9edbd953 WAA |
5017 | goto out; |
5018 | } | |
78fe0f41 | 5019 | } |
7d2ed9ac WAA |
5020 | |
5021 | out_server_scope: | |
9edbd953 WAA |
5022 | kfree(res.server_scope); |
5023 | out: | |
7d2ed9ac WAA |
5024 | if (clp->impl_id) |
5025 | dprintk("%s: Server Implementation ID: " | |
5026 | "domain: %s, name: %s, date: %llu,%u\n", | |
5027 | __func__, clp->impl_id->domain, clp->impl_id->name, | |
5028 | clp->impl_id->date.seconds, | |
5029 | clp->impl_id->date.nseconds); | |
99fe60d0 BH |
5030 | dprintk("<-- %s status= %d\n", __func__, status); |
5031 | return status; | |
5032 | } | |
5033 | ||
2050f0cc AA |
5034 | struct nfs4_get_lease_time_data { |
5035 | struct nfs4_get_lease_time_args *args; | |
5036 | struct nfs4_get_lease_time_res *res; | |
5037 | struct nfs_client *clp; | |
5038 | }; | |
5039 | ||
5040 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5041 | void *calldata) | |
5042 | { | |
5043 | int ret; | |
5044 | struct nfs4_get_lease_time_data *data = | |
5045 | (struct nfs4_get_lease_time_data *)calldata; | |
5046 | ||
5047 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5048 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5049 | /* just setup sequence, do not trigger session recovery |
5050 | since we're invoked within one */ | |
5051 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5052 | &data->args->la_seq_args, |
9d12b216 | 5053 | &data->res->lr_seq_res, task); |
2050f0cc AA |
5054 | |
5055 | BUG_ON(ret == -EAGAIN); | |
5056 | rpc_call_start(task); | |
5057 | dprintk("<-- %s\n", __func__); | |
5058 | } | |
5059 | ||
5060 | /* | |
5061 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5062 | * from sequence operation or clientid errors. | |
5063 | */ | |
5064 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5065 | { | |
5066 | struct nfs4_get_lease_time_data *data = | |
5067 | (struct nfs4_get_lease_time_data *)calldata; | |
5068 | ||
5069 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5070 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5071 | return; | |
2050f0cc AA |
5072 | switch (task->tk_status) { |
5073 | case -NFS4ERR_DELAY: | |
5074 | case -NFS4ERR_GRACE: | |
5075 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5076 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5077 | task->tk_status = 0; | |
a8a4ae3a AA |
5078 | /* fall through */ |
5079 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5080 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5081 | return; |
5082 | } | |
2050f0cc AA |
5083 | dprintk("<-- %s\n", __func__); |
5084 | } | |
5085 | ||
5086 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
5087 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
5088 | .rpc_call_done = nfs4_get_lease_time_done, | |
5089 | }; | |
5090 | ||
5091 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5092 | { | |
5093 | struct rpc_task *task; | |
5094 | struct nfs4_get_lease_time_args args; | |
5095 | struct nfs4_get_lease_time_res res = { | |
5096 | .lr_fsinfo = fsinfo, | |
5097 | }; | |
5098 | struct nfs4_get_lease_time_data data = { | |
5099 | .args = &args, | |
5100 | .res = &res, | |
5101 | .clp = clp, | |
5102 | }; | |
5103 | struct rpc_message msg = { | |
5104 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5105 | .rpc_argp = &args, | |
5106 | .rpc_resp = &res, | |
5107 | }; | |
5108 | struct rpc_task_setup task_setup = { | |
5109 | .rpc_client = clp->cl_rpcclient, | |
5110 | .rpc_message = &msg, | |
5111 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5112 | .callback_data = &data, |
5113 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5114 | }; |
5115 | int status; | |
5116 | ||
9d12b216 | 5117 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5118 | dprintk("--> %s\n", __func__); |
5119 | task = rpc_run_task(&task_setup); | |
5120 | ||
5121 | if (IS_ERR(task)) | |
5122 | status = PTR_ERR(task); | |
5123 | else { | |
5124 | status = task->tk_status; | |
5125 | rpc_put_task(task); | |
5126 | } | |
5127 | dprintk("<-- %s return %d\n", __func__, status); | |
5128 | ||
5129 | return status; | |
5130 | } | |
5131 | ||
f86f36a6 TM |
5132 | static struct nfs4_slot *nfs4_alloc_slots(u32 max_slots, gfp_t gfp_flags) |
5133 | { | |
5134 | return kcalloc(max_slots, sizeof(struct nfs4_slot), gfp_flags); | |
5135 | } | |
5136 | ||
5137 | static void nfs4_add_and_init_slots(struct nfs4_slot_table *tbl, | |
5138 | struct nfs4_slot *new, | |
5139 | u32 max_slots, | |
5140 | u32 ivalue) | |
5141 | { | |
5142 | struct nfs4_slot *old = NULL; | |
5143 | u32 i; | |
5144 | ||
5145 | spin_lock(&tbl->slot_tbl_lock); | |
5146 | if (new) { | |
5147 | old = tbl->slots; | |
5148 | tbl->slots = new; | |
5149 | tbl->max_slots = max_slots; | |
5150 | } | |
5151 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5152 | for (i = 0; i < tbl->max_slots; i++) | |
5153 | tbl->slots[i].seq_nr = ivalue; | |
5154 | spin_unlock(&tbl->slot_tbl_lock); | |
5155 | kfree(old); | |
5156 | } | |
5157 | ||
b73dafa7 | 5158 | /* |
f86f36a6 | 5159 | * (re)Initialise a slot table |
b73dafa7 | 5160 | */ |
f86f36a6 TM |
5161 | static int nfs4_realloc_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5162 | u32 ivalue) | |
ac72b7b3 | 5163 | { |
104aeba4 | 5164 | struct nfs4_slot *new = NULL; |
f86f36a6 | 5165 | int ret = -ENOMEM; |
ac72b7b3 | 5166 | |
104aeba4 AA |
5167 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5168 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5169 | |
104aeba4 AA |
5170 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5171 | if (max_reqs != tbl->max_slots) { | |
f86f36a6 | 5172 | new = nfs4_alloc_slots(max_reqs, GFP_NOFS); |
104aeba4 AA |
5173 | if (!new) |
5174 | goto out; | |
104aeba4 | 5175 | } |
f86f36a6 TM |
5176 | ret = 0; |
5177 | ||
5178 | nfs4_add_and_init_slots(tbl, new, max_reqs, ivalue); | |
ac72b7b3 AA |
5179 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, |
5180 | tbl, tbl->slots, tbl->max_slots); | |
5181 | out: | |
5182 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5183 | return ret; | |
5184 | } | |
5185 | ||
f8625a6a RL |
5186 | /* Destroy the slot table */ |
5187 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5188 | { | |
5189 | if (session->fc_slot_table.slots != NULL) { | |
5190 | kfree(session->fc_slot_table.slots); | |
5191 | session->fc_slot_table.slots = NULL; | |
5192 | } | |
5193 | if (session->bc_slot_table.slots != NULL) { | |
5194 | kfree(session->bc_slot_table.slots); | |
5195 | session->bc_slot_table.slots = NULL; | |
5196 | } | |
5197 | return; | |
5198 | } | |
5199 | ||
050047ce | 5200 | /* |
aacd5537 | 5201 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5202 | */ |
aacd5537 | 5203 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5204 | { |
f26468fb | 5205 | struct nfs4_slot_table *tbl; |
aacd5537 | 5206 | int status; |
050047ce | 5207 | |
aacd5537 AA |
5208 | dprintk("--> %s\n", __func__); |
5209 | /* Fore channel */ | |
5210 | tbl = &ses->fc_slot_table; | |
f86f36a6 TM |
5211 | status = nfs4_realloc_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5212 | if (status) /* -ENOMEM */ | |
5213 | return status; | |
aacd5537 AA |
5214 | /* Back channel */ |
5215 | tbl = &ses->bc_slot_table; | |
f86f36a6 TM |
5216 | status = nfs4_realloc_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
5217 | if (status && tbl->slots == NULL) | |
5218 | /* Fore and back channel share a connection so get | |
5219 | * both slot tables or neither */ | |
5220 | nfs4_destroy_slot_tables(ses); | |
f8625a6a | 5221 | return status; |
557134a3 AA |
5222 | } |
5223 | ||
5224 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5225 | { | |
5226 | struct nfs4_session *session; | |
5227 | struct nfs4_slot_table *tbl; | |
5228 | ||
8535b2be | 5229 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5230 | if (!session) |
5231 | return NULL; | |
76db6d95 | 5232 | |
557134a3 | 5233 | tbl = &session->fc_slot_table; |
45d43c29 | 5234 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5235 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5236 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5237 | init_completion(&tbl->complete); |
f8625a6a RL |
5238 | |
5239 | tbl = &session->bc_slot_table; | |
45d43c29 | 5240 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5241 | spin_lock_init(&tbl->slot_tbl_lock); |
5242 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5243 | init_completion(&tbl->complete); |
f8625a6a | 5244 | |
1055d76d TM |
5245 | session->session_state = 1<<NFS4_SESSION_INITING; |
5246 | ||
557134a3 AA |
5247 | session->clp = clp; |
5248 | return session; | |
5249 | } | |
5250 | ||
5251 | void nfs4_destroy_session(struct nfs4_session *session) | |
5252 | { | |
2446ab60 TM |
5253 | struct rpc_xprt *xprt; |
5254 | ||
5a0ffe54 | 5255 | nfs4_proc_destroy_session(session); |
2446ab60 TM |
5256 | |
5257 | rcu_read_lock(); | |
5258 | xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); | |
5259 | rcu_read_unlock(); | |
5a0ffe54 | 5260 | dprintk("%s Destroy backchannel for xprt %p\n", |
2446ab60 TM |
5261 | __func__, xprt); |
5262 | xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5263 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5264 | kfree(session); |
5265 | } | |
5266 | ||
fc931582 AA |
5267 | /* |
5268 | * Initialize the values to be used by the client in CREATE_SESSION | |
5269 | * If nfs4_init_session set the fore channel request and response sizes, | |
5270 | * use them. | |
5271 | * | |
5272 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5273 | * always set csa_cachethis to FALSE because the current implementation | |
5274 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5275 | */ | |
5276 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5277 | { | |
5278 | struct nfs4_session *session = args->client->cl_session; | |
5279 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5280 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5281 | ||
5282 | if (mxrqst_sz == 0) | |
5283 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5284 | if (mxresp_sz == 0) | |
5285 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5286 | /* Fore channel attributes */ | |
fc931582 AA |
5287 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5288 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5289 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5290 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5291 | |
5292 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5293 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5294 | __func__, |
5295 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5296 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5297 | |
5298 | /* Back channel attributes */ | |
fc931582 AA |
5299 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5300 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5301 | args->bc_attrs.max_resp_sz_cached = 0; | |
5302 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5303 | args->bc_attrs.max_reqs = 1; | |
5304 | ||
5305 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5306 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5307 | __func__, | |
5308 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5309 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5310 | args->bc_attrs.max_reqs); | |
5311 | } | |
5312 | ||
43c2e885 | 5313 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5314 | { |
43c2e885 BF |
5315 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5316 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5317 | ||
43c2e885 BF |
5318 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5319 | return -EINVAL; | |
5320 | /* | |
5321 | * Our requested max_ops is the minimum we need; we're not | |
5322 | * prepared to break up compounds into smaller pieces than that. | |
5323 | * So, no point even trying to continue if the server won't | |
5324 | * cooperate: | |
5325 | */ | |
5326 | if (rcvd->max_ops < sent->max_ops) | |
5327 | return -EINVAL; | |
5328 | if (rcvd->max_reqs == 0) | |
5329 | return -EINVAL; | |
b4b9a0c1 VG |
5330 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5331 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5332 | return 0; |
8d35301d AA |
5333 | } |
5334 | ||
43c2e885 BF |
5335 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5336 | { | |
5337 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5338 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5339 | |
43c2e885 BF |
5340 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5341 | return -EINVAL; | |
5342 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5343 | return -EINVAL; | |
5344 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5345 | return -EINVAL; | |
5346 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5347 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5348 | return -EINVAL; |
b4b9a0c1 | 5349 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5350 | return -EINVAL; |
5351 | return 0; | |
5352 | } | |
8d35301d | 5353 | |
8d35301d AA |
5354 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5355 | struct nfs4_session *session) | |
5356 | { | |
43c2e885 | 5357 | int ret; |
8d35301d | 5358 | |
43c2e885 BF |
5359 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5360 | if (ret) | |
5361 | return ret; | |
5362 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5363 | } |
5364 | ||
fc931582 AA |
5365 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5366 | { | |
5367 | struct nfs4_session *session = clp->cl_session; | |
5368 | struct nfs41_create_session_args args = { | |
5369 | .client = clp, | |
5370 | .cb_program = NFS4_CALLBACK, | |
5371 | }; | |
5372 | struct nfs41_create_session_res res = { | |
5373 | .client = clp, | |
5374 | }; | |
5375 | struct rpc_message msg = { | |
5376 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5377 | .rpc_argp = &args, | |
5378 | .rpc_resp = &res, | |
5379 | }; | |
5380 | int status; | |
5381 | ||
5382 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5383 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5384 | |
1bd714f2 | 5385 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5386 | |
8d35301d AA |
5387 | if (!status) |
5388 | /* Verify the session's negotiated channel_attrs values */ | |
5389 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5390 | if (!status) { |
5391 | /* Increment the clientid slot sequence id */ | |
5392 | clp->cl_seqid++; | |
5393 | } | |
5394 | ||
5395 | return status; | |
5396 | } | |
5397 | ||
5398 | /* | |
5399 | * Issues a CREATE_SESSION operation to the server. | |
5400 | * It is the responsibility of the caller to verify the session is | |
5401 | * expired before calling this routine. | |
5402 | */ | |
f26468fb | 5403 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5404 | { |
5405 | int status; | |
5406 | unsigned *ptr; | |
fc931582 AA |
5407 | struct nfs4_session *session = clp->cl_session; |
5408 | ||
5409 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5410 | ||
fd954ae1 | 5411 | status = _nfs4_proc_create_session(clp); |
fc931582 AA |
5412 | if (status) |
5413 | goto out; | |
5414 | ||
aacd5537 AA |
5415 | /* Init or reset the session slot tables */ |
5416 | status = nfs4_setup_session_slot_tables(session); | |
5417 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5418 | if (status) |
5419 | goto out; | |
5420 | ||
5421 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5422 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5423 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5424 | out: |
5425 | dprintk("<-- %s\n", __func__); | |
5426 | return status; | |
5427 | } | |
5428 | ||
0f3e66c6 AA |
5429 | /* |
5430 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5431 | * The caller must serialize access to this routine. | |
5432 | */ | |
5433 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5434 | { | |
5435 | int status = 0; | |
5436 | struct rpc_message msg; | |
5437 | ||
5438 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5439 | ||
5440 | /* session is still being setup */ | |
5441 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5442 | return status; | |
5443 | ||
5444 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5445 | msg.rpc_argp = session; | |
5446 | msg.rpc_resp = NULL; | |
5447 | msg.rpc_cred = NULL; | |
1bd714f2 | 5448 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5449 | |
5450 | if (status) | |
5451 | printk(KERN_WARNING | |
f9fd2d9c | 5452 | "NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5453 | "Session has been destroyed regardless...\n", status); |
5454 | ||
5455 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5456 | return status; | |
5457 | } | |
5458 | ||
fccba804 TM |
5459 | int nfs4_init_session(struct nfs_server *server) |
5460 | { | |
5461 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5462 | struct nfs4_session *session; |
68bf05ef | 5463 | unsigned int rsize, wsize; |
fccba804 TM |
5464 | int ret; |
5465 | ||
5466 | if (!nfs4_has_session(clp)) | |
5467 | return 0; | |
5468 | ||
1055d76d TM |
5469 | session = clp->cl_session; |
5470 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5471 | return 0; | |
5472 | ||
68bf05ef AA |
5473 | rsize = server->rsize; |
5474 | if (rsize == 0) | |
5475 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5476 | wsize = server->wsize; | |
5477 | if (wsize == 0) | |
5478 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5479 | ||
68bf05ef AA |
5480 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5481 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5482 | |
fccba804 TM |
5483 | ret = nfs4_recover_expired_lease(server); |
5484 | if (!ret) | |
5485 | ret = nfs4_check_client_ready(clp); | |
5486 | return ret; | |
5487 | } | |
5488 | ||
d83217c1 AA |
5489 | int nfs4_init_ds_session(struct nfs_client *clp) |
5490 | { | |
5491 | struct nfs4_session *session = clp->cl_session; | |
5492 | int ret; | |
5493 | ||
5494 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5495 | return 0; | |
5496 | ||
5497 | ret = nfs4_client_recover_expired_lease(clp); | |
5498 | if (!ret) | |
5499 | /* Test for the DS role */ | |
5500 | if (!is_ds_client(clp)) | |
5501 | ret = -ENODEV; | |
5502 | if (!ret) | |
5503 | ret = nfs4_check_client_ready(clp); | |
5504 | return ret; | |
5505 | ||
5506 | } | |
5507 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5508 | ||
5509 | ||
fc01cea9 AA |
5510 | /* |
5511 | * Renew the cl_session lease. | |
5512 | */ | |
d5f8d3fe TM |
5513 | struct nfs4_sequence_data { |
5514 | struct nfs_client *clp; | |
5515 | struct nfs4_sequence_args args; | |
5516 | struct nfs4_sequence_res res; | |
5517 | }; | |
5518 | ||
dc96aef9 AB |
5519 | static void nfs41_sequence_release(void *data) |
5520 | { | |
d5f8d3fe TM |
5521 | struct nfs4_sequence_data *calldata = data; |
5522 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5523 | |
7135840f AB |
5524 | if (atomic_read(&clp->cl_count) > 1) |
5525 | nfs4_schedule_state_renewal(clp); | |
5526 | nfs_put_client(clp); | |
d5f8d3fe | 5527 | kfree(calldata); |
dc96aef9 AB |
5528 | } |
5529 | ||
aa5190d0 TM |
5530 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5531 | { | |
5532 | switch(task->tk_status) { | |
5533 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5534 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5535 | return -EAGAIN; | |
5536 | default: | |
0400a6b0 | 5537 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5538 | } |
5539 | return 0; | |
5540 | } | |
5541 | ||
dc96aef9 | 5542 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5543 | { |
d5f8d3fe TM |
5544 | struct nfs4_sequence_data *calldata = data; |
5545 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5546 | |
14516c3a TM |
5547 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5548 | return; | |
fc01cea9 AA |
5549 | |
5550 | if (task->tk_status < 0) { | |
5551 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5552 | if (atomic_read(&clp->cl_count) == 1) |
5553 | goto out; | |
fc01cea9 | 5554 | |
aa5190d0 TM |
5555 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5556 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5557 | return; |
5558 | } | |
5559 | } | |
fc01cea9 | 5560 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5561 | out: |
fc01cea9 AA |
5562 | dprintk("<-- %s\n", __func__); |
5563 | } | |
5564 | ||
5565 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5566 | { | |
d5f8d3fe TM |
5567 | struct nfs4_sequence_data *calldata = data; |
5568 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5569 | struct nfs4_sequence_args *args; |
5570 | struct nfs4_sequence_res *res; | |
5571 | ||
fc01cea9 AA |
5572 | args = task->tk_msg.rpc_argp; |
5573 | res = task->tk_msg.rpc_resp; | |
5574 | ||
9d12b216 | 5575 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
5576 | return; |
5577 | rpc_call_start(task); | |
5578 | } | |
5579 | ||
5580 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5581 | .rpc_call_done = nfs41_sequence_call_done, | |
5582 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5583 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5584 | }; |
5585 | ||
71ac6da9 | 5586 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5587 | { |
d5f8d3fe | 5588 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5589 | struct rpc_message msg = { |
5590 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5591 | .rpc_cred = cred, | |
5592 | }; | |
71ac6da9 TM |
5593 | struct rpc_task_setup task_setup_data = { |
5594 | .rpc_client = clp->cl_rpcclient, | |
5595 | .rpc_message = &msg, | |
5596 | .callback_ops = &nfs41_sequence_ops, | |
5597 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5598 | }; | |
fc01cea9 | 5599 | |
7135840f | 5600 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5601 | return ERR_PTR(-EIO); |
dfb4f309 | 5602 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5603 | if (calldata == NULL) { |
7135840f | 5604 | nfs_put_client(clp); |
71ac6da9 | 5605 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5606 | } |
9d12b216 | 5607 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
5608 | msg.rpc_argp = &calldata->args; |
5609 | msg.rpc_resp = &calldata->res; | |
5610 | calldata->clp = clp; | |
71ac6da9 | 5611 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5612 | |
71ac6da9 TM |
5613 | return rpc_run_task(&task_setup_data); |
5614 | } | |
5615 | ||
2f60ea6b | 5616 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5617 | { |
5618 | struct rpc_task *task; | |
5619 | int ret = 0; | |
5620 | ||
2f60ea6b TM |
5621 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5622 | return 0; | |
71ac6da9 TM |
5623 | task = _nfs41_proc_sequence(clp, cred); |
5624 | if (IS_ERR(task)) | |
5625 | ret = PTR_ERR(task); | |
5626 | else | |
bf294b41 | 5627 | rpc_put_task_async(task); |
71ac6da9 TM |
5628 | dprintk("<-- %s status=%d\n", __func__, ret); |
5629 | return ret; | |
5630 | } | |
5631 | ||
5632 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5633 | { | |
5634 | struct rpc_task *task; | |
5635 | int ret; | |
5636 | ||
5637 | task = _nfs41_proc_sequence(clp, cred); | |
5638 | if (IS_ERR(task)) { | |
5639 | ret = PTR_ERR(task); | |
5640 | goto out; | |
5641 | } | |
5642 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5643 | if (!ret) { |
5644 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5645 | ||
5646 | if (task->tk_status == 0) | |
5647 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5648 | ret = task->tk_status; |
b4410c2f | 5649 | } |
71ac6da9 TM |
5650 | rpc_put_task(task); |
5651 | out: | |
5652 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5653 | return ret; | |
fc01cea9 AA |
5654 | } |
5655 | ||
fce5c838 RL |
5656 | struct nfs4_reclaim_complete_data { |
5657 | struct nfs_client *clp; | |
5658 | struct nfs41_reclaim_complete_args arg; | |
5659 | struct nfs41_reclaim_complete_res res; | |
5660 | }; | |
5661 | ||
5662 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5663 | { | |
5664 | struct nfs4_reclaim_complete_data *calldata = data; | |
5665 | ||
b257957e | 5666 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5667 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5668 | &calldata->arg.seq_args, | |
9d12b216 | 5669 | &calldata->res.seq_res, task)) |
fce5c838 RL |
5670 | return; |
5671 | ||
5672 | rpc_call_start(task); | |
5673 | } | |
5674 | ||
aa5190d0 TM |
5675 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5676 | { | |
5677 | switch(task->tk_status) { | |
5678 | case 0: | |
5679 | case -NFS4ERR_COMPLETE_ALREADY: | |
5680 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5681 | break; | |
5682 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5683 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5684 | /* fall through */ |
5685 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5686 | return -EAGAIN; |
5687 | default: | |
0400a6b0 | 5688 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5689 | } |
5690 | return 0; | |
5691 | } | |
5692 | ||
fce5c838 RL |
5693 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5694 | { | |
5695 | struct nfs4_reclaim_complete_data *calldata = data; | |
5696 | struct nfs_client *clp = calldata->clp; | |
5697 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5698 | ||
5699 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5700 | if (!nfs41_sequence_done(task, res)) |
5701 | return; | |
fce5c838 | 5702 | |
aa5190d0 TM |
5703 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5704 | rpc_restart_call_prepare(task); | |
5705 | return; | |
5706 | } | |
fce5c838 RL |
5707 | dprintk("<-- %s\n", __func__); |
5708 | } | |
5709 | ||
5710 | static void nfs4_free_reclaim_complete_data(void *data) | |
5711 | { | |
5712 | struct nfs4_reclaim_complete_data *calldata = data; | |
5713 | ||
5714 | kfree(calldata); | |
5715 | } | |
5716 | ||
5717 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5718 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5719 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5720 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5721 | }; | |
5722 | ||
5723 | /* | |
5724 | * Issue a global reclaim complete. | |
5725 | */ | |
5726 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5727 | { | |
5728 | struct nfs4_reclaim_complete_data *calldata; | |
5729 | struct rpc_task *task; | |
5730 | struct rpc_message msg = { | |
5731 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5732 | }; | |
5733 | struct rpc_task_setup task_setup_data = { | |
5734 | .rpc_client = clp->cl_rpcclient, | |
5735 | .rpc_message = &msg, | |
5736 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5737 | .flags = RPC_TASK_ASYNC, | |
5738 | }; | |
5739 | int status = -ENOMEM; | |
5740 | ||
5741 | dprintk("--> %s\n", __func__); | |
8535b2be | 5742 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5743 | if (calldata == NULL) |
5744 | goto out; | |
5745 | calldata->clp = clp; | |
5746 | calldata->arg.one_fs = 0; | |
fce5c838 | 5747 | |
9d12b216 | 5748 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
5749 | msg.rpc_argp = &calldata->arg; |
5750 | msg.rpc_resp = &calldata->res; | |
5751 | task_setup_data.callback_data = calldata; | |
5752 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5753 | if (IS_ERR(task)) { |
fce5c838 | 5754 | status = PTR_ERR(task); |
acf82b85 DC |
5755 | goto out; |
5756 | } | |
c34c32ea AA |
5757 | status = nfs4_wait_for_completion_rpc_task(task); |
5758 | if (status == 0) | |
5759 | status = task->tk_status; | |
fce5c838 | 5760 | rpc_put_task(task); |
acf82b85 | 5761 | return 0; |
fce5c838 RL |
5762 | out: |
5763 | dprintk("<-- %s status=%d\n", __func__, status); | |
5764 | return status; | |
5765 | } | |
b1f69b75 AA |
5766 | |
5767 | static void | |
5768 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5769 | { | |
5770 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5771 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5772 | |
5773 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5774 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5775 | * right now covering the LAYOUTGET we are about to send. | |
5776 | * However, that is not so catastrophic, and there seems | |
5777 | * to be no way to prevent it completely. | |
5778 | */ | |
b1f69b75 | 5779 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 5780 | &lgp->res.seq_res, task)) |
b1f69b75 | 5781 | return; |
cf7d63f1 FI |
5782 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5783 | NFS_I(lgp->args.inode)->layout, | |
5784 | lgp->args.ctx->state)) { | |
5785 | rpc_exit(task, NFS4_OK); | |
5786 | return; | |
5787 | } | |
b1f69b75 AA |
5788 | rpc_call_start(task); |
5789 | } | |
5790 | ||
5791 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5792 | { | |
5793 | struct nfs4_layoutget *lgp = calldata; | |
5794 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5795 | ||
5796 | dprintk("--> %s\n", __func__); | |
5797 | ||
5798 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5799 | return; | |
5800 | ||
5801 | switch (task->tk_status) { | |
5802 | case 0: | |
5803 | break; | |
5804 | case -NFS4ERR_LAYOUTTRYLATER: | |
5805 | case -NFS4ERR_RECALLCONFLICT: | |
5806 | task->tk_status = -NFS4ERR_DELAY; | |
5807 | /* Fall through */ | |
5808 | default: | |
5809 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5810 | rpc_restart_call_prepare(task); | |
5811 | return; | |
5812 | } | |
5813 | } | |
b1f69b75 AA |
5814 | dprintk("<-- %s\n", __func__); |
5815 | } | |
5816 | ||
5817 | static void nfs4_layoutget_release(void *calldata) | |
5818 | { | |
5819 | struct nfs4_layoutget *lgp = calldata; | |
5820 | ||
5821 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5822 | put_nfs_open_context(lgp->args.ctx); |
5823 | kfree(calldata); | |
5824 | dprintk("<-- %s\n", __func__); | |
5825 | } | |
5826 | ||
5827 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5828 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5829 | .rpc_call_done = nfs4_layoutget_done, | |
5830 | .rpc_release = nfs4_layoutget_release, | |
5831 | }; | |
5832 | ||
5833 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5834 | { | |
5835 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5836 | struct rpc_task *task; | |
5837 | struct rpc_message msg = { | |
5838 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5839 | .rpc_argp = &lgp->args, | |
5840 | .rpc_resp = &lgp->res, | |
5841 | }; | |
5842 | struct rpc_task_setup task_setup_data = { | |
5843 | .rpc_client = server->client, | |
5844 | .rpc_message = &msg, | |
5845 | .callback_ops = &nfs4_layoutget_call_ops, | |
5846 | .callback_data = lgp, | |
5847 | .flags = RPC_TASK_ASYNC, | |
5848 | }; | |
5849 | int status = 0; | |
5850 | ||
5851 | dprintk("--> %s\n", __func__); | |
5852 | ||
35124a09 | 5853 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 5854 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 5855 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
5856 | task = rpc_run_task(&task_setup_data); |
5857 | if (IS_ERR(task)) | |
5858 | return PTR_ERR(task); | |
5859 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5860 | if (status == 0) |
5861 | status = task->tk_status; | |
5862 | if (status == 0) | |
5863 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5864 | rpc_put_task(task); |
5865 | dprintk("<-- %s status=%d\n", __func__, status); | |
5866 | return status; | |
5867 | } | |
5868 | ||
cbe82603 BH |
5869 | static void |
5870 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
5871 | { | |
5872 | struct nfs4_layoutreturn *lrp = calldata; | |
5873 | ||
5874 | dprintk("--> %s\n", __func__); | |
5875 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 5876 | &lrp->res.seq_res, task)) |
cbe82603 BH |
5877 | return; |
5878 | rpc_call_start(task); | |
5879 | } | |
5880 | ||
5881 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
5882 | { | |
5883 | struct nfs4_layoutreturn *lrp = calldata; | |
5884 | struct nfs_server *server; | |
a56aaa02 | 5885 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
5886 | |
5887 | dprintk("--> %s\n", __func__); | |
5888 | ||
5889 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
5890 | return; | |
5891 | ||
5892 | server = NFS_SERVER(lrp->args.inode); | |
5893 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 5894 | rpc_restart_call_prepare(task); |
cbe82603 BH |
5895 | return; |
5896 | } | |
a2e1d4f2 | 5897 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 5898 | if (task->tk_status == 0) { |
cbe82603 | 5899 | if (lrp->res.lrs_present) { |
cbe82603 | 5900 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
5901 | } else |
5902 | BUG_ON(!list_empty(&lo->plh_segs)); | |
5903 | } | |
a2e1d4f2 FI |
5904 | lo->plh_block_lgets--; |
5905 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
5906 | dprintk("<-- %s\n", __func__); |
5907 | } | |
5908 | ||
5909 | static void nfs4_layoutreturn_release(void *calldata) | |
5910 | { | |
5911 | struct nfs4_layoutreturn *lrp = calldata; | |
5912 | ||
5913 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 5914 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
5915 | kfree(calldata); |
5916 | dprintk("<-- %s\n", __func__); | |
5917 | } | |
5918 | ||
5919 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
5920 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
5921 | .rpc_call_done = nfs4_layoutreturn_done, | |
5922 | .rpc_release = nfs4_layoutreturn_release, | |
5923 | }; | |
5924 | ||
5925 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
5926 | { | |
5927 | struct rpc_task *task; | |
5928 | struct rpc_message msg = { | |
5929 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
5930 | .rpc_argp = &lrp->args, | |
5931 | .rpc_resp = &lrp->res, | |
5932 | }; | |
5933 | struct rpc_task_setup task_setup_data = { | |
5934 | .rpc_client = lrp->clp->cl_rpcclient, | |
5935 | .rpc_message = &msg, | |
5936 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
5937 | .callback_data = lrp, | |
5938 | }; | |
5939 | int status; | |
5940 | ||
5941 | dprintk("--> %s\n", __func__); | |
9d12b216 | 5942 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
5943 | task = rpc_run_task(&task_setup_data); |
5944 | if (IS_ERR(task)) | |
5945 | return PTR_ERR(task); | |
5946 | status = task->tk_status; | |
5947 | dprintk("<-- %s status=%d\n", __func__, status); | |
5948 | rpc_put_task(task); | |
5949 | return status; | |
5950 | } | |
5951 | ||
7f11d8d3 AA |
5952 | /* |
5953 | * Retrieve the list of Data Server devices from the MDS. | |
5954 | */ | |
5955 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
5956 | const struct nfs_fh *fh, | |
5957 | struct pnfs_devicelist *devlist) | |
5958 | { | |
5959 | struct nfs4_getdevicelist_args args = { | |
5960 | .fh = fh, | |
5961 | .layoutclass = server->pnfs_curr_ld->id, | |
5962 | }; | |
5963 | struct nfs4_getdevicelist_res res = { | |
5964 | .devlist = devlist, | |
5965 | }; | |
5966 | struct rpc_message msg = { | |
5967 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
5968 | .rpc_argp = &args, | |
5969 | .rpc_resp = &res, | |
5970 | }; | |
5971 | int status; | |
5972 | ||
5973 | dprintk("--> %s\n", __func__); | |
5974 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
5975 | &res.seq_res, 0); | |
5976 | dprintk("<-- %s status=%d\n", __func__, status); | |
5977 | return status; | |
5978 | } | |
5979 | ||
5980 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
5981 | const struct nfs_fh *fh, | |
5982 | struct pnfs_devicelist *devlist) | |
5983 | { | |
5984 | struct nfs4_exception exception = { }; | |
5985 | int err; | |
5986 | ||
5987 | do { | |
5988 | err = nfs4_handle_exception(server, | |
5989 | _nfs4_getdevicelist(server, fh, devlist), | |
5990 | &exception); | |
5991 | } while (exception.retry); | |
5992 | ||
5993 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
5994 | err, devlist->num_devs); | |
5995 | ||
5996 | return err; | |
5997 | } | |
5998 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
5999 | ||
b1f69b75 AA |
6000 | static int |
6001 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6002 | { | |
6003 | struct nfs4_getdeviceinfo_args args = { | |
6004 | .pdev = pdev, | |
6005 | }; | |
6006 | struct nfs4_getdeviceinfo_res res = { | |
6007 | .pdev = pdev, | |
6008 | }; | |
6009 | struct rpc_message msg = { | |
6010 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6011 | .rpc_argp = &args, | |
6012 | .rpc_resp = &res, | |
6013 | }; | |
6014 | int status; | |
6015 | ||
6016 | dprintk("--> %s\n", __func__); | |
7c513058 | 6017 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6018 | dprintk("<-- %s status=%d\n", __func__, status); |
6019 | ||
6020 | return status; | |
6021 | } | |
6022 | ||
6023 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6024 | { | |
6025 | struct nfs4_exception exception = { }; | |
6026 | int err; | |
6027 | ||
6028 | do { | |
6029 | err = nfs4_handle_exception(server, | |
6030 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6031 | &exception); | |
6032 | } while (exception.retry); | |
6033 | return err; | |
6034 | } | |
6035 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6036 | ||
863a3c6c AA |
6037 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6038 | { | |
6039 | struct nfs4_layoutcommit_data *data = calldata; | |
6040 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6041 | ||
6042 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6043 | &data->res.seq_res, task)) |
863a3c6c AA |
6044 | return; |
6045 | rpc_call_start(task); | |
6046 | } | |
6047 | ||
6048 | static void | |
6049 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6050 | { | |
6051 | struct nfs4_layoutcommit_data *data = calldata; | |
6052 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6053 | ||
6054 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6055 | return; | |
6056 | ||
6057 | switch (task->tk_status) { /* Just ignore these failures */ | |
6058 | case NFS4ERR_DELEG_REVOKED: /* layout was recalled */ | |
6059 | case NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6060 | case NFS4ERR_BADLAYOUT: /* no layout */ | |
6061 | case NFS4ERR_GRACE: /* loca_recalim always false */ | |
6062 | task->tk_status = 0; | |
6063 | } | |
6064 | ||
6065 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6066 | rpc_restart_call_prepare(task); |
863a3c6c AA |
6067 | return; |
6068 | } | |
6069 | ||
6070 | if (task->tk_status == 0) | |
6071 | nfs_post_op_update_inode_force_wcc(data->args.inode, | |
6072 | data->res.fattr); | |
6073 | } | |
6074 | ||
6075 | static void nfs4_layoutcommit_release(void *calldata) | |
6076 | { | |
6077 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6078 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6079 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6080 | |
db29c089 | 6081 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6082 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6083 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6084 | list_del_init(&lseg->pls_lc_list); | |
6085 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6086 | &lseg->pls_flags)) | |
6087 | put_lseg(lseg); | |
6088 | } | |
92407e75 PT |
6089 | |
6090 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6091 | smp_mb__after_clear_bit(); | |
6092 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6093 | ||
863a3c6c AA |
6094 | put_rpccred(data->cred); |
6095 | kfree(data); | |
6096 | } | |
6097 | ||
6098 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6099 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6100 | .rpc_call_done = nfs4_layoutcommit_done, | |
6101 | .rpc_release = nfs4_layoutcommit_release, | |
6102 | }; | |
6103 | ||
6104 | int | |
ef311537 | 6105 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6106 | { |
6107 | struct rpc_message msg = { | |
6108 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6109 | .rpc_argp = &data->args, | |
6110 | .rpc_resp = &data->res, | |
6111 | .rpc_cred = data->cred, | |
6112 | }; | |
6113 | struct rpc_task_setup task_setup_data = { | |
6114 | .task = &data->task, | |
6115 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6116 | .rpc_message = &msg, | |
6117 | .callback_ops = &nfs4_layoutcommit_ops, | |
6118 | .callback_data = data, | |
6119 | .flags = RPC_TASK_ASYNC, | |
6120 | }; | |
6121 | struct rpc_task *task; | |
6122 | int status = 0; | |
6123 | ||
6124 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6125 | "lbw: %llu inode %lu\n", | |
6126 | data->task.tk_pid, sync, | |
6127 | data->args.lastbytewritten, | |
6128 | data->args.inode->i_ino); | |
6129 | ||
9d12b216 | 6130 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6131 | task = rpc_run_task(&task_setup_data); |
6132 | if (IS_ERR(task)) | |
6133 | return PTR_ERR(task); | |
ef311537 | 6134 | if (sync == false) |
863a3c6c AA |
6135 | goto out; |
6136 | status = nfs4_wait_for_completion_rpc_task(task); | |
6137 | if (status != 0) | |
6138 | goto out; | |
6139 | status = task->tk_status; | |
6140 | out: | |
6141 | dprintk("%s: status %d\n", __func__, status); | |
6142 | rpc_put_task(task); | |
6143 | return status; | |
6144 | } | |
fca78d6d BS |
6145 | |
6146 | static int | |
6147 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6148 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6149 | { | |
6150 | struct nfs41_secinfo_no_name_args args = { | |
6151 | .style = SECINFO_STYLE_CURRENT_FH, | |
6152 | }; | |
6153 | struct nfs4_secinfo_res res = { | |
6154 | .flavors = flavors, | |
6155 | }; | |
6156 | struct rpc_message msg = { | |
6157 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6158 | .rpc_argp = &args, | |
6159 | .rpc_resp = &res, | |
6160 | }; | |
6161 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6162 | } | |
6163 | ||
6164 | static int | |
6165 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6166 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6167 | { | |
6168 | struct nfs4_exception exception = { }; | |
6169 | int err; | |
6170 | do { | |
6171 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6172 | switch (err) { | |
6173 | case 0: | |
6174 | case -NFS4ERR_WRONGSEC: | |
6175 | case -NFS4ERR_NOTSUPP: | |
6176 | break; | |
6177 | default: | |
6178 | err = nfs4_handle_exception(server, err, &exception); | |
6179 | } | |
6180 | } while (exception.retry); | |
6181 | return err; | |
6182 | } | |
6183 | ||
6184 | static int | |
6185 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6186 | struct nfs_fsinfo *info) | |
6187 | { | |
6188 | int err; | |
6189 | struct page *page; | |
6190 | rpc_authflavor_t flavor; | |
6191 | struct nfs4_secinfo_flavors *flavors; | |
6192 | ||
6193 | page = alloc_page(GFP_KERNEL); | |
6194 | if (!page) { | |
6195 | err = -ENOMEM; | |
6196 | goto out; | |
6197 | } | |
6198 | ||
6199 | flavors = page_address(page); | |
6200 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6201 | ||
6202 | /* | |
6203 | * Fall back on "guess and check" method if | |
6204 | * the server doesn't support SECINFO_NO_NAME | |
6205 | */ | |
6206 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6207 | err = nfs4_find_root_sec(server, fhandle, info); | |
6208 | goto out_freepage; | |
6209 | } | |
6210 | if (err) | |
6211 | goto out_freepage; | |
6212 | ||
6213 | flavor = nfs_find_best_sec(flavors); | |
6214 | if (err == 0) | |
6215 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6216 | ||
6217 | out_freepage: | |
6218 | put_page(page); | |
6219 | if (err == -EACCES) | |
6220 | return -EPERM; | |
6221 | out: | |
6222 | return err; | |
6223 | } | |
1cab0652 BS |
6224 | |
6225 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 | 6226 | { |
1cab0652 | 6227 | int status; |
7d974794 | 6228 | struct nfs41_test_stateid_args args = { |
1cab0652 | 6229 | .stateid = stateid, |
7d974794 BS |
6230 | }; |
6231 | struct nfs41_test_stateid_res res; | |
6232 | struct rpc_message msg = { | |
6233 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6234 | .rpc_argp = &args, | |
6235 | .rpc_resp = &res, | |
6236 | }; | |
1cab0652 | 6237 | |
9d12b216 | 6238 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 BS |
6239 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
6240 | ||
6241 | if (status == NFS_OK) | |
6242 | return res.status; | |
6243 | return status; | |
7d974794 BS |
6244 | } |
6245 | ||
1cab0652 | 6246 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6247 | { |
6248 | struct nfs4_exception exception = { }; | |
6249 | int err; | |
6250 | do { | |
6251 | err = nfs4_handle_exception(server, | |
1cab0652 | 6252 | _nfs41_test_stateid(server, stateid), |
7d974794 BS |
6253 | &exception); |
6254 | } while (exception.retry); | |
6255 | return err; | |
6256 | } | |
9aeda35f | 6257 | |
1cab0652 | 6258 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6259 | { |
9aeda35f | 6260 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6261 | .stateid = stateid, |
9aeda35f BS |
6262 | }; |
6263 | struct nfs41_free_stateid_res res; | |
6264 | struct rpc_message msg = { | |
6265 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6266 | .rpc_argp = &args, | |
6267 | .rpc_resp = &res, | |
6268 | }; | |
6269 | ||
9d12b216 TM |
6270 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
6271 | return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); | |
9aeda35f BS |
6272 | } |
6273 | ||
1cab0652 | 6274 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6275 | { |
6276 | struct nfs4_exception exception = { }; | |
6277 | int err; | |
6278 | do { | |
6279 | err = nfs4_handle_exception(server, | |
1cab0652 | 6280 | _nfs4_free_stateid(server, stateid), |
9aeda35f BS |
6281 | &exception); |
6282 | } while (exception.retry); | |
6283 | return err; | |
6284 | } | |
36281caa TM |
6285 | |
6286 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6287 | const nfs4_stateid *s2) | |
6288 | { | |
2d2f24ad | 6289 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6290 | return false; |
6291 | ||
2d2f24ad | 6292 | if (s1->seqid == s2->seqid) |
36281caa | 6293 | return true; |
2d2f24ad | 6294 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6295 | return true; |
6296 | ||
6297 | return false; | |
6298 | } | |
6299 | ||
557134a3 AA |
6300 | #endif /* CONFIG_NFS_V4_1 */ |
6301 | ||
36281caa TM |
6302 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6303 | const nfs4_stateid *s2) | |
6304 | { | |
f597c537 | 6305 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6306 | } |
6307 | ||
6308 | ||
591d71cb | 6309 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6310 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6311 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6312 | .recover_open = nfs4_open_reclaim, |
6313 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6314 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6315 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6316 | }; |
6317 | ||
591d71cb AA |
6318 | #if defined(CONFIG_NFS_V4_1) |
6319 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
6320 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
6321 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6322 | .recover_open = nfs4_open_reclaim, | |
6323 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6324 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6325 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6326 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6327 | }; |
6328 | #endif /* CONFIG_NFS_V4_1 */ | |
6329 | ||
6330 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
6331 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
6332 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6333 | .recover_open = nfs4_open_expired, | |
6334 | .recover_lock = nfs4_lock_expired, | |
6335 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6336 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6337 | }; |
6338 | ||
6339 | #if defined(CONFIG_NFS_V4_1) | |
6340 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 6341 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6342 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6343 | .recover_open = nfs41_open_expired, |
6344 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6345 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6346 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6347 | }; |
591d71cb | 6348 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6349 | |
29fba38b BH |
6350 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
6351 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 6352 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6353 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6354 | }; |
6355 | ||
6356 | #if defined(CONFIG_NFS_V4_1) | |
6357 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
6358 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 6359 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6360 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6361 | }; |
6362 | #endif | |
6363 | ||
97dc1359 TM |
6364 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6365 | .minor_version = 0, | |
6366 | .call_sync = _nfs4_call_sync, | |
36281caa | 6367 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6368 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6369 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6370 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6371 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6372 | }; |
6373 | ||
6374 | #if defined(CONFIG_NFS_V4_1) | |
6375 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6376 | .minor_version = 1, | |
6377 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 6378 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6379 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6380 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6381 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6382 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6383 | }; |
6384 | #endif | |
6385 | ||
97dc1359 TM |
6386 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6387 | [0] = &nfs_v4_0_minor_ops, | |
6388 | #if defined(CONFIG_NFS_V4_1) | |
6389 | [1] = &nfs_v4_1_minor_ops, | |
6390 | #endif | |
6391 | }; | |
6392 | ||
92e1d5be | 6393 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6394 | .permission = nfs_permission, |
6395 | .getattr = nfs_getattr, | |
6396 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6397 | .getxattr = generic_getxattr, |
6398 | .setxattr = generic_setxattr, | |
6399 | .listxattr = generic_listxattr, | |
6400 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6401 | }; |
6402 | ||
509de811 | 6403 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6404 | .version = 4, /* protocol version */ |
6405 | .dentry_ops = &nfs4_dentry_operations, | |
6406 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6407 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6408 | .file_ops = &nfs4_file_operations, |
1da177e4 LT |
6409 | .getroot = nfs4_proc_get_root, |
6410 | .getattr = nfs4_proc_getattr, | |
6411 | .setattr = nfs4_proc_setattr, | |
6412 | .lookup = nfs4_proc_lookup, | |
6413 | .access = nfs4_proc_access, | |
6414 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6415 | .create = nfs4_proc_create, |
6416 | .remove = nfs4_proc_remove, | |
6417 | .unlink_setup = nfs4_proc_unlink_setup, | |
6418 | .unlink_done = nfs4_proc_unlink_done, | |
6419 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
6420 | .rename_setup = nfs4_proc_rename_setup, |
6421 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
6422 | .link = nfs4_proc_link, |
6423 | .symlink = nfs4_proc_symlink, | |
6424 | .mkdir = nfs4_proc_mkdir, | |
6425 | .rmdir = nfs4_proc_remove, | |
6426 | .readdir = nfs4_proc_readdir, | |
6427 | .mknod = nfs4_proc_mknod, | |
6428 | .statfs = nfs4_proc_statfs, | |
6429 | .fsinfo = nfs4_proc_fsinfo, | |
6430 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6431 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6432 | .decode_dirent = nfs4_decode_dirent, |
6433 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 6434 | .read_done = nfs4_read_done, |
1da177e4 | 6435 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 6436 | .write_done = nfs4_write_done, |
1da177e4 | 6437 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 6438 | .commit_done = nfs4_commit_done, |
1da177e4 | 6439 | .lock = nfs4_proc_lock, |
e50a1c2e | 6440 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6441 | .close_context = nfs4_close_context, |
2b484297 | 6442 | .open_context = nfs4_atomic_open, |
45a52a02 | 6443 | .init_client = nfs4_init_client, |
5a5ea0d4 | 6444 | .secinfo = nfs4_proc_secinfo, |
1da177e4 LT |
6445 | }; |
6446 | ||
64c2ce8b AK |
6447 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6448 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6449 | .list = nfs4_xattr_list_nfs4_acl, | |
6450 | .get = nfs4_xattr_get_nfs4_acl, | |
6451 | .set = nfs4_xattr_set_nfs4_acl, | |
6452 | }; | |
6453 | ||
6454 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6455 | &nfs4_xattr_nfs4_acl_handler, | |
6456 | NULL | |
6457 | }; | |
6458 | ||
ef159e91 TM |
6459 | module_param(max_session_slots, ushort, 0644); |
6460 | MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 " | |
6461 | "requests the client will negotiate"); | |
6462 | ||
1da177e4 LT |
6463 | /* |
6464 | * Local variables: | |
6465 | * c-basic-offset: 8 | |
6466 | * End: | |
6467 | */ |