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" |
f092075d | 67 | #include "netns.h" |
1da177e4 LT |
68 | |
69 | #define NFSDBG_FACILITY NFSDBG_PROC | |
70 | ||
2066fe89 | 71 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
72 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
73 | ||
a78cb57a TM |
74 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
75 | ||
ef159e91 TM |
76 | static unsigned short max_session_slots = NFS4_DEF_SLOT_TABLE_SIZE; |
77 | ||
cdd4e68b | 78 | struct nfs4_opendata; |
864472e9 | 79 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 80 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 81 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 82 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
81934ddb | 83 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
bae36241 | 84 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *); |
9936781d | 85 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
86 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
87 | struct nfs_fattr *fattr, struct iattr *sattr, | |
88 | struct nfs4_state *state); | |
f062eb6c | 89 | #ifdef CONFIG_NFS_V4_1 |
1cab0652 BS |
90 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *); |
91 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *); | |
f062eb6c | 92 | #endif |
1da177e4 | 93 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 94 | static int nfs4_map_errors(int err) |
1da177e4 | 95 | { |
52567b03 TM |
96 | if (err >= -1000) |
97 | return err; | |
98 | switch (err) { | |
99 | case -NFS4ERR_RESOURCE: | |
100 | return -EREMOTEIO; | |
7ebb9315 BS |
101 | case -NFS4ERR_WRONGSEC: |
102 | return -EPERM; | |
3ddeb7c5 TM |
103 | case -NFS4ERR_BADOWNER: |
104 | case -NFS4ERR_BADNAME: | |
105 | return -EINVAL; | |
fb13bfa7 TM |
106 | case -NFS4ERR_SHARE_DENIED: |
107 | return -EACCES; | |
f25efd85 SD |
108 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
109 | return -EPROTONOSUPPORT; | |
52567b03 | 110 | default: |
1da177e4 | 111 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 112 | __func__, -err); |
52567b03 | 113 | break; |
1da177e4 | 114 | } |
52567b03 | 115 | return -EIO; |
1da177e4 LT |
116 | } |
117 | ||
118 | /* | |
119 | * This is our standard bitmap for GETATTR requests. | |
120 | */ | |
1549210f | 121 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
122 | FATTR4_WORD0_TYPE |
123 | | FATTR4_WORD0_CHANGE | |
124 | | FATTR4_WORD0_SIZE | |
125 | | FATTR4_WORD0_FSID | |
126 | | FATTR4_WORD0_FILEID, | |
127 | FATTR4_WORD1_MODE | |
128 | | FATTR4_WORD1_NUMLINKS | |
129 | | FATTR4_WORD1_OWNER | |
130 | | FATTR4_WORD1_OWNER_GROUP | |
131 | | FATTR4_WORD1_RAWDEV | |
132 | | FATTR4_WORD1_SPACE_USED | |
133 | | FATTR4_WORD1_TIME_ACCESS | |
134 | | FATTR4_WORD1_TIME_METADATA | |
135 | | FATTR4_WORD1_TIME_MODIFY | |
136 | }; | |
137 | ||
1549210f TM |
138 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
139 | FATTR4_WORD0_TYPE | |
140 | | FATTR4_WORD0_CHANGE | |
141 | | FATTR4_WORD0_SIZE | |
142 | | FATTR4_WORD0_FSID | |
143 | | FATTR4_WORD0_FILEID, | |
144 | FATTR4_WORD1_MODE | |
145 | | FATTR4_WORD1_NUMLINKS | |
146 | | FATTR4_WORD1_OWNER | |
147 | | FATTR4_WORD1_OWNER_GROUP | |
148 | | FATTR4_WORD1_RAWDEV | |
149 | | FATTR4_WORD1_SPACE_USED | |
150 | | FATTR4_WORD1_TIME_ACCESS | |
151 | | FATTR4_WORD1_TIME_METADATA | |
152 | | FATTR4_WORD1_TIME_MODIFY, | |
153 | FATTR4_WORD2_MDSTHRESHOLD | |
154 | }; | |
155 | ||
1da177e4 LT |
156 | const u32 nfs4_statfs_bitmap[2] = { |
157 | FATTR4_WORD0_FILES_AVAIL | |
158 | | FATTR4_WORD0_FILES_FREE | |
159 | | FATTR4_WORD0_FILES_TOTAL, | |
160 | FATTR4_WORD1_SPACE_AVAIL | |
161 | | FATTR4_WORD1_SPACE_FREE | |
162 | | FATTR4_WORD1_SPACE_TOTAL | |
163 | }; | |
164 | ||
4ce79717 | 165 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
166 | FATTR4_WORD0_MAXLINK |
167 | | FATTR4_WORD0_MAXNAME, | |
168 | 0 | |
169 | }; | |
170 | ||
dae100c2 | 171 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
172 | | FATTR4_WORD0_MAXREAD |
173 | | FATTR4_WORD0_MAXWRITE | |
174 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 175 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
176 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
177 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
178 | }; |
179 | ||
830b8e33 MN |
180 | const u32 nfs4_fs_locations_bitmap[2] = { |
181 | FATTR4_WORD0_TYPE | |
182 | | FATTR4_WORD0_CHANGE | |
183 | | FATTR4_WORD0_SIZE | |
184 | | FATTR4_WORD0_FSID | |
185 | | FATTR4_WORD0_FILEID | |
186 | | FATTR4_WORD0_FS_LOCATIONS, | |
187 | FATTR4_WORD1_MODE | |
188 | | FATTR4_WORD1_NUMLINKS | |
189 | | FATTR4_WORD1_OWNER | |
190 | | FATTR4_WORD1_OWNER_GROUP | |
191 | | FATTR4_WORD1_RAWDEV | |
192 | | FATTR4_WORD1_SPACE_USED | |
193 | | FATTR4_WORD1_TIME_ACCESS | |
194 | | FATTR4_WORD1_TIME_METADATA | |
195 | | FATTR4_WORD1_TIME_MODIFY | |
196 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
197 | }; | |
198 | ||
bc4785cd | 199 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
200 | struct nfs4_readdir_arg *readdir) |
201 | { | |
0dbb4c67 | 202 | __be32 *start, *p; |
1da177e4 LT |
203 | |
204 | BUG_ON(readdir->count < 80); | |
205 | if (cookie > 2) { | |
b7ef1956 | 206 | readdir->cookie = cookie; |
1da177e4 LT |
207 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
208 | return; | |
209 | } | |
210 | ||
211 | readdir->cookie = 0; | |
212 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
213 | if (cookie == 2) | |
214 | return; | |
215 | ||
216 | /* | |
217 | * NFSv4 servers do not return entries for '.' and '..' | |
218 | * Therefore, we fake these entries here. We let '.' | |
219 | * have cookie 0 and '..' have cookie 1. Note that | |
220 | * when talking to the server, we always send cookie 0 | |
221 | * instead of 1 or 2. | |
222 | */ | |
2b86ce2d | 223 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
224 | |
225 | if (cookie == 0) { | |
226 | *p++ = xdr_one; /* next */ | |
227 | *p++ = xdr_zero; /* cookie, first word */ | |
228 | *p++ = xdr_one; /* cookie, second word */ | |
229 | *p++ = xdr_one; /* entry len */ | |
230 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
231 | p++; | |
232 | *p++ = xdr_one; /* bitmap length */ | |
233 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
234 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 235 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
236 | } |
237 | ||
238 | *p++ = xdr_one; /* next */ | |
239 | *p++ = xdr_zero; /* cookie, first word */ | |
240 | *p++ = xdr_two; /* cookie, second word */ | |
241 | *p++ = xdr_two; /* entry len */ | |
242 | memcpy(p, "..\0\0", 4); /* entry */ | |
243 | p++; | |
244 | *p++ = xdr_one; /* bitmap length */ | |
245 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
246 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 247 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
248 | |
249 | readdir->pgbase = (char *)p - (char *)start; | |
250 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 251 | kunmap_atomic(start); |
1da177e4 LT |
252 | } |
253 | ||
65de872e TM |
254 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
255 | { | |
256 | int res; | |
257 | ||
258 | might_sleep(); | |
259 | ||
e005e804 | 260 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 261 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
262 | return res; |
263 | } | |
264 | ||
265 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
266 | { | |
267 | int res = 0; | |
268 | ||
269 | might_sleep(); | |
270 | ||
271 | if (*timeout <= 0) | |
272 | *timeout = NFS4_POLL_RETRY_MIN; | |
273 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
274 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 275 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
276 | if (fatal_signal_pending(current)) |
277 | res = -ERESTARTSYS; | |
278 | *timeout <<= 1; | |
279 | return res; | |
280 | } | |
281 | ||
282 | /* This is the error handling routine for processes that are allowed | |
283 | * to sleep. | |
284 | */ | |
b064eca2 | 285 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
286 | { |
287 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 288 | struct nfs4_state *state = exception->state; |
3114ea7a | 289 | struct inode *inode = exception->inode; |
65de872e TM |
290 | int ret = errorcode; |
291 | ||
292 | exception->retry = 0; | |
293 | switch(errorcode) { | |
294 | case 0: | |
295 | return 0; | |
3114ea7a | 296 | case -NFS4ERR_OPENMODE: |
011e2a7f | 297 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 298 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
299 | exception->retry = 1; |
300 | return 0; | |
301 | } | |
302 | if (state == NULL) | |
303 | break; | |
304 | nfs4_schedule_stateid_recovery(server, state); | |
305 | goto wait_on_recovery; | |
a1d0b5ee | 306 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
307 | case -NFS4ERR_ADMIN_REVOKED: |
308 | case -NFS4ERR_BAD_STATEID: | |
9e33bed5 TM |
309 | if (state == NULL) |
310 | break; | |
14977489 | 311 | nfs_remove_bad_delegation(state->inode); |
0400a6b0 TM |
312 | nfs4_schedule_stateid_recovery(server, state); |
313 | goto wait_on_recovery; | |
0ced63d1 TM |
314 | case -NFS4ERR_EXPIRED: |
315 | if (state != NULL) | |
316 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 317 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 318 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
319 | nfs4_schedule_lease_recovery(clp); |
320 | goto wait_on_recovery; | |
03391693 | 321 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
322 | case -NFS4ERR_BADSESSION: |
323 | case -NFS4ERR_BADSLOT: | |
324 | case -NFS4ERR_BAD_HIGH_SLOT: | |
325 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
326 | case -NFS4ERR_DEADSESSION: | |
327 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
328 | case -NFS4ERR_SEQ_MISORDERED: | |
329 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
330 | errorcode); | |
9f594791 | 331 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
4745e315 | 332 | exception->retry = 1; |
b9179237 | 333 | break; |
03391693 | 334 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 335 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
336 | if (exception->timeout > HZ) { |
337 | /* We have retried a decent amount, time to | |
338 | * fail | |
339 | */ | |
340 | ret = -EBUSY; | |
341 | break; | |
342 | } | |
65de872e TM |
343 | case -NFS4ERR_GRACE: |
344 | case -NFS4ERR_DELAY: | |
2c643488 | 345 | case -EKEYEXPIRED: |
65de872e TM |
346 | ret = nfs4_delay(server->client, &exception->timeout); |
347 | if (ret != 0) | |
348 | break; | |
a8a4ae3a | 349 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
350 | case -NFS4ERR_OLD_STATEID: |
351 | exception->retry = 1; | |
b064eca2 TM |
352 | break; |
353 | case -NFS4ERR_BADOWNER: | |
354 | /* The following works around a Linux server bug! */ | |
355 | case -NFS4ERR_BADNAME: | |
356 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
357 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
358 | exception->retry = 1; | |
359 | printk(KERN_WARNING "NFS: v4 server %s " | |
360 | "does not accept raw " | |
361 | "uid/gids. " | |
362 | "Reenabling the idmapper.\n", | |
363 | server->nfs_client->cl_hostname); | |
364 | } | |
65de872e TM |
365 | } |
366 | /* We failed to handle the error */ | |
367 | return nfs4_map_errors(ret); | |
0400a6b0 | 368 | wait_on_recovery: |
a2c0b9e2 TM |
369 | ret = nfs4_wait_clnt_recover(clp); |
370 | if (ret == 0) | |
371 | exception->retry = 1; | |
372 | return ret; | |
65de872e TM |
373 | } |
374 | ||
375 | ||
452e9352 | 376 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 377 | { |
1da177e4 LT |
378 | spin_lock(&clp->cl_lock); |
379 | if (time_before(clp->cl_last_renewal,timestamp)) | |
380 | clp->cl_last_renewal = timestamp; | |
381 | spin_unlock(&clp->cl_lock); | |
382 | } | |
383 | ||
452e9352 TM |
384 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
385 | { | |
386 | do_renew_lease(server->nfs_client, timestamp); | |
387 | } | |
388 | ||
cccef3b9 AA |
389 | #if defined(CONFIG_NFS_V4_1) |
390 | ||
e2c4ab3c AA |
391 | /* |
392 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
393 | * | |
394 | * freeing a slot is trivially done by clearing its respective bit | |
395 | * in the bitmap. | |
396 | * If the freed slotid equals highest_used_slotid we want to update it | |
397 | * so that the server would be able to size down the slot table if needed, | |
398 | * otherwise we know that the highest_used_slotid is still in use. | |
399 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
400 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
401 | * highest slotid in use. | |
45d43c29 | 402 | * If none found, highest_used_slotid is set to NFS4_NO_SLOT. |
35dc1d74 TM |
403 | * |
404 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
405 | */ |
406 | static void | |
45d43c29 | 407 | nfs4_free_slot(struct nfs4_slot_table *tbl, u32 slotid) |
e2c4ab3c | 408 | { |
45d43c29 | 409 | BUG_ON(slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
410 | /* clear used bit in bitmap */ |
411 | __clear_bit(slotid, tbl->used_slots); | |
412 | ||
413 | /* update highest_used_slotid when it is freed */ | |
414 | if (slotid == tbl->highest_used_slotid) { | |
415 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 416 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
417 | tbl->highest_used_slotid = slotid; |
418 | else | |
45d43c29 | 419 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
e2c4ab3c | 420 | } |
45d43c29 TM |
421 | dprintk("%s: slotid %u highest_used_slotid %d\n", __func__, |
422 | slotid, tbl->highest_used_slotid); | |
e2c4ab3c AA |
423 | } |
424 | ||
961a828d TM |
425 | bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) |
426 | { | |
427 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
428 | return true; | |
e2c4ab3c AA |
429 | } |
430 | ||
3bfb0fc5 | 431 | /* |
42acd021 | 432 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 433 | */ |
42acd021 | 434 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 435 | { |
a2118c33 | 436 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
961a828d TM |
437 | rpc_wake_up_first(&ses->fc_slot_table.slot_tbl_waitq, |
438 | nfs4_set_task_privileged, NULL); | |
3bfb0fc5 AB |
439 | return; |
440 | } | |
441 | ||
45d43c29 | 442 | if (ses->fc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
3bfb0fc5 AB |
443 | return; |
444 | ||
42acd021 AA |
445 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
446 | complete(&ses->fc_slot_table.complete); | |
447 | } | |
448 | ||
449 | /* | |
450 | * Signal state manager thread if session back channel is drained | |
451 | */ | |
452 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
453 | { | |
454 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
45d43c29 | 455 | ses->bc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
42acd021 AA |
456 | return; |
457 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
458 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
459 | } |
460 | ||
d185a334 | 461 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
462 | { |
463 | struct nfs4_slot_table *tbl; | |
464 | ||
d185a334 | 465 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 466 | if (!res->sr_slot) { |
13615871 AA |
467 | /* just wake up the next guy waiting since |
468 | * we may have not consumed a slot after all */ | |
691daf3b | 469 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 470 | return; |
13615871 | 471 | } |
ea028ac9 | 472 | |
35dc1d74 | 473 | spin_lock(&tbl->slot_tbl_lock); |
aabd0b40 | 474 | nfs4_free_slot(tbl, res->sr_slot - tbl->slots); |
42acd021 | 475 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 476 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 477 | res->sr_slot = NULL; |
13615871 AA |
478 | } |
479 | ||
14516c3a | 480 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
481 | { |
482 | unsigned long timestamp; | |
14516c3a | 483 | struct nfs_client *clp; |
b0df806c AA |
484 | |
485 | /* | |
486 | * sr_status remains 1 if an RPC level error occurred. The server | |
487 | * may or may not have processed the sequence operation.. | |
488 | * Proceed as if the server received and processed the sequence | |
489 | * operation. | |
490 | */ | |
491 | if (res->sr_status == 1) | |
492 | res->sr_status = NFS_OK; | |
493 | ||
468f8613 BS |
494 | /* don't increment the sequence number if the task wasn't sent */ |
495 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
496 | goto out; |
497 | ||
691daf3b | 498 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
499 | switch (res->sr_status) { |
500 | case 0: | |
b0df806c | 501 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 502 | ++res->sr_slot->seq_nr; |
b0df806c | 503 | timestamp = res->sr_renewal_time; |
14516c3a | 504 | clp = res->sr_session->clp; |
452e9352 | 505 | do_renew_lease(clp, timestamp); |
0629e370 | 506 | /* Check sequence flags */ |
b4410c2f TM |
507 | if (res->sr_status_flags != 0) |
508 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
509 | break; |
510 | case -NFS4ERR_DELAY: | |
511 | /* The server detected a resend of the RPC call and | |
512 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
513 | * of RFC5661. | |
514 | */ | |
12364a4f | 515 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
516 | __func__, |
517 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
518 | res->sr_slot->seq_nr); | |
14516c3a TM |
519 | goto out_retry; |
520 | default: | |
521 | /* Just update the slot sequence no. */ | |
dfb4f309 | 522 | ++res->sr_slot->seq_nr; |
b0df806c AA |
523 | } |
524 | out: | |
525 | /* The session may be reset by one of the error handlers. */ | |
526 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 527 | nfs41_sequence_free_slot(res); |
14516c3a TM |
528 | return 1; |
529 | out_retry: | |
d05dd4e9 | 530 | if (!rpc_restart_call(task)) |
14516c3a TM |
531 | goto out; |
532 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
533 | return 0; | |
b0df806c AA |
534 | } |
535 | ||
14516c3a TM |
536 | static int nfs4_sequence_done(struct rpc_task *task, |
537 | struct nfs4_sequence_res *res) | |
df896455 | 538 | { |
14516c3a TM |
539 | if (res->sr_session == NULL) |
540 | return 1; | |
541 | return nfs41_sequence_done(task, res); | |
df896455 TM |
542 | } |
543 | ||
510b8175 BH |
544 | /* |
545 | * nfs4_find_slot - efficiently look for a free slot | |
546 | * | |
547 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
548 | * If found, we mark the slot as used, update the highest_used_slotid, | |
549 | * and respectively set up the sequence operation args. | |
45d43c29 | 550 | * The slot number is returned if found, or NFS4_NO_SLOT otherwise. |
fbcd4abc AA |
551 | * |
552 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 | 553 | */ |
45d43c29 | 554 | static u32 |
40ead580 | 555 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 | 556 | { |
45d43c29 TM |
557 | u32 slotid; |
558 | u32 ret_id = NFS4_NO_SLOT; | |
510b8175 | 559 | |
45d43c29 | 560 | dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n", |
510b8175 BH |
561 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, |
562 | tbl->max_slots); | |
563 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
564 | if (slotid >= tbl->max_slots) | |
565 | goto out; | |
566 | __set_bit(slotid, tbl->used_slots); | |
45d43c29 TM |
567 | if (slotid > tbl->highest_used_slotid || |
568 | tbl->highest_used_slotid == NFS4_NO_SLOT) | |
510b8175 BH |
569 | tbl->highest_used_slotid = slotid; |
570 | ret_id = slotid; | |
571 | out: | |
572 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
573 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
574 | return ret_id; |
575 | } | |
576 | ||
9d12b216 TM |
577 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
578 | struct nfs4_sequence_res *res, int cache_reply) | |
579 | { | |
580 | args->sa_session = NULL; | |
581 | args->sa_cache_this = 0; | |
582 | if (cache_reply) | |
583 | args->sa_cache_this = 1; | |
584 | res->sr_session = NULL; | |
585 | res->sr_slot = NULL; | |
586 | } | |
587 | ||
dc70d7b3 | 588 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
589 | struct nfs4_sequence_args *args, |
590 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
591 | struct rpc_task *task) |
592 | { | |
fbcd4abc AA |
593 | struct nfs4_slot *slot; |
594 | struct nfs4_slot_table *tbl; | |
45d43c29 | 595 | u32 slotid; |
fbcd4abc AA |
596 | |
597 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 598 | /* slot already allocated? */ |
dfb4f309 | 599 | if (res->sr_slot != NULL) |
ce5039c1 AA |
600 | return 0; |
601 | ||
fbcd4abc AA |
602 | tbl = &session->fc_slot_table; |
603 | ||
604 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 605 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 606 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 607 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 608 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 609 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 610 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 611 | return -EAGAIN; |
b069d94a AA |
612 | } |
613 | ||
689cf5c1 AB |
614 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
615 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
616 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
617 | spin_unlock(&tbl->slot_tbl_lock); | |
618 | dprintk("%s enforce FIFO order\n", __func__); | |
619 | return -EAGAIN; | |
620 | } | |
621 | ||
40ead580 | 622 | slotid = nfs4_find_slot(tbl); |
45d43c29 | 623 | if (slotid == NFS4_NO_SLOT) { |
fbcd4abc AA |
624 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
625 | spin_unlock(&tbl->slot_tbl_lock); | |
626 | dprintk("<-- %s: no free slots\n", __func__); | |
627 | return -EAGAIN; | |
628 | } | |
629 | spin_unlock(&tbl->slot_tbl_lock); | |
630 | ||
689cf5c1 | 631 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 632 | slot = tbl->slots + slotid; |
99fe60d0 | 633 | args->sa_session = session; |
fbcd4abc | 634 | args->sa_slotid = slotid; |
fbcd4abc AA |
635 | |
636 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
637 | ||
99fe60d0 | 638 | res->sr_session = session; |
dfb4f309 | 639 | res->sr_slot = slot; |
fbcd4abc | 640 | res->sr_renewal_time = jiffies; |
2a6e26cd | 641 | res->sr_status_flags = 0; |
fbcd4abc AA |
642 | /* |
643 | * sr_status is only set in decode_sequence, and so will remain | |
644 | * set to 1 if an rpc level failure occurs. | |
645 | */ | |
646 | res->sr_status = 1; | |
ce5039c1 AA |
647 | return 0; |
648 | } | |
dc70d7b3 | 649 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 650 | |
035168ab | 651 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
652 | struct nfs4_sequence_args *args, |
653 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
654 | struct rpc_task *task) |
655 | { | |
035168ab | 656 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
657 | int ret = 0; |
658 | ||
9d12b216 | 659 | if (session == NULL) |
035168ab | 660 | goto out; |
035168ab | 661 | |
12364a4f | 662 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
663 | __func__, session->clp, session, res->sr_slot ? |
664 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 665 | |
9d12b216 | 666 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
667 | out: |
668 | dprintk("<-- %s status=%d\n", __func__, ret); | |
669 | return ret; | |
670 | } | |
671 | ||
672 | struct nfs41_call_sync_data { | |
035168ab | 673 | const struct nfs_server *seq_server; |
ce5039c1 AA |
674 | struct nfs4_sequence_args *seq_args; |
675 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
676 | }; |
677 | ||
678 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
679 | { | |
680 | struct nfs41_call_sync_data *data = calldata; | |
681 | ||
035168ab TM |
682 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
683 | ||
684 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
9d12b216 | 685 | data->seq_res, task)) |
ce5039c1 AA |
686 | return; |
687 | rpc_call_start(task); | |
688 | } | |
689 | ||
b257957e AB |
690 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
691 | { | |
692 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
693 | nfs41_call_sync_prepare(task, calldata); | |
694 | } | |
695 | ||
69ab40c4 AA |
696 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
697 | { | |
698 | struct nfs41_call_sync_data *data = calldata; | |
699 | ||
14516c3a | 700 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
701 | } |
702 | ||
17280175 | 703 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 704 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 705 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
706 | }; |
707 | ||
17280175 | 708 | static const struct rpc_call_ops nfs41_call_priv_sync_ops = { |
b257957e AB |
709 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, |
710 | .rpc_call_done = nfs41_call_sync_done, | |
711 | }; | |
712 | ||
7c513058 BS |
713 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
714 | struct nfs_server *server, | |
ce5039c1 AA |
715 | struct rpc_message *msg, |
716 | struct nfs4_sequence_args *args, | |
717 | struct nfs4_sequence_res *res, | |
b257957e | 718 | int privileged) |
ce5039c1 AA |
719 | { |
720 | int ret; | |
721 | struct rpc_task *task; | |
722 | struct nfs41_call_sync_data data = { | |
035168ab | 723 | .seq_server = server, |
ce5039c1 AA |
724 | .seq_args = args, |
725 | .seq_res = res, | |
ce5039c1 AA |
726 | }; |
727 | struct rpc_task_setup task_setup = { | |
7c513058 | 728 | .rpc_client = clnt, |
ce5039c1 AA |
729 | .rpc_message = msg, |
730 | .callback_ops = &nfs41_call_sync_ops, | |
731 | .callback_data = &data | |
732 | }; | |
733 | ||
b257957e AB |
734 | if (privileged) |
735 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
736 | task = rpc_run_task(&task_setup); |
737 | if (IS_ERR(task)) | |
738 | ret = PTR_ERR(task); | |
739 | else { | |
740 | ret = task->tk_status; | |
741 | rpc_put_task(task); | |
742 | } | |
743 | return ret; | |
744 | } | |
745 | ||
7c513058 BS |
746 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
747 | struct nfs_server *server, | |
cccef3b9 AA |
748 | struct rpc_message *msg, |
749 | struct nfs4_sequence_args *args, | |
750 | struct nfs4_sequence_res *res, | |
751 | int cache_reply) | |
752 | { | |
9d12b216 TM |
753 | nfs41_init_sequence(args, res, cache_reply); |
754 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); | |
cccef3b9 AA |
755 | } |
756 | ||
df896455 | 757 | #else |
9d12b216 TM |
758 | static inline |
759 | void nfs41_init_sequence(struct nfs4_sequence_args *args, | |
760 | struct nfs4_sequence_res *res, int cache_reply) | |
761 | { | |
762 | } | |
763 | ||
14516c3a TM |
764 | static int nfs4_sequence_done(struct rpc_task *task, |
765 | struct nfs4_sequence_res *res) | |
df896455 | 766 | { |
14516c3a | 767 | return 1; |
df896455 | 768 | } |
cccef3b9 AA |
769 | #endif /* CONFIG_NFS_V4_1 */ |
770 | ||
7c513058 BS |
771 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
772 | struct nfs_server *server, | |
cccef3b9 AA |
773 | struct rpc_message *msg, |
774 | struct nfs4_sequence_args *args, | |
775 | struct nfs4_sequence_res *res, | |
776 | int cache_reply) | |
777 | { | |
9d12b216 | 778 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 779 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
780 | } |
781 | ||
e73b83f2 | 782 | static inline |
7c513058 BS |
783 | int nfs4_call_sync(struct rpc_clnt *clnt, |
784 | struct nfs_server *server, | |
e73b83f2 BS |
785 | struct rpc_message *msg, |
786 | struct nfs4_sequence_args *args, | |
787 | struct nfs4_sequence_res *res, | |
788 | int cache_reply) | |
789 | { | |
7c513058 BS |
790 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
791 | args, res, cache_reply); | |
e73b83f2 | 792 | } |
cccef3b9 | 793 | |
38478b24 | 794 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 795 | { |
38478b24 | 796 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 797 | |
38478b24 | 798 | spin_lock(&dir->i_lock); |
359d7d1c | 799 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 800 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 801 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 802 | dir->i_version = cinfo->after; |
38478b24 | 803 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
804 | } |
805 | ||
e56e0b78 | 806 | struct nfs4_opendata { |
c6d00e63 | 807 | struct kref kref; |
e56e0b78 TM |
808 | struct nfs_openargs o_arg; |
809 | struct nfs_openres o_res; | |
cdd4e68b TM |
810 | struct nfs_open_confirmargs c_arg; |
811 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
812 | struct nfs4_string owner_name; |
813 | struct nfs4_string group_name; | |
e56e0b78 | 814 | struct nfs_fattr f_attr; |
e56e0b78 | 815 | struct dentry *dir; |
82a2c1b7 | 816 | struct dentry *dentry; |
e56e0b78 | 817 | struct nfs4_state_owner *owner; |
aac00a8d | 818 | struct nfs4_state *state; |
e56e0b78 | 819 | struct iattr attrs; |
26e976a8 | 820 | unsigned long timestamp; |
3e309914 | 821 | unsigned int rpc_done : 1; |
24ac23ab TM |
822 | int rpc_status; |
823 | int cancelled; | |
e56e0b78 TM |
824 | }; |
825 | ||
2ced46c2 TM |
826 | |
827 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
828 | { | |
829 | p->o_res.f_attr = &p->f_attr; | |
c1d51931 TM |
830 | p->o_res.seqid = p->o_arg.seqid; |
831 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
832 | p->o_res.server = p->o_arg.server; |
833 | nfs_fattr_init(&p->f_attr); | |
6926afd1 | 834 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
835 | } |
836 | ||
82a2c1b7 | 837 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 838 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
839 | const struct iattr *attrs, |
840 | gfp_t gfp_mask) | |
e56e0b78 | 841 | { |
82a2c1b7 | 842 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
843 | struct inode *dir = parent->d_inode; |
844 | struct nfs_server *server = NFS_SERVER(dir); | |
845 | struct nfs4_opendata *p; | |
846 | ||
8535b2be | 847 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
848 | if (p == NULL) |
849 | goto err; | |
8535b2be | 850 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
851 | if (p->o_arg.seqid == NULL) |
852 | goto err_free; | |
82a2c1b7 AV |
853 | nfs_sb_active(dentry->d_sb); |
854 | p->dentry = dget(dentry); | |
e56e0b78 TM |
855 | p->dir = parent; |
856 | p->owner = sp; | |
857 | atomic_inc(&sp->so_count); | |
858 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
859 | p->o_arg.open_flags = flags; |
860 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 861 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
862 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
863 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 864 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
865 | p->o_arg.server = server; |
866 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 867 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
e56e0b78 | 868 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 869 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 870 | __be32 verf[2]; |
d77d76ff | 871 | |
e56e0b78 TM |
872 | p->o_arg.u.attrs = &p->attrs; |
873 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
874 | |
875 | verf[0] = jiffies; | |
876 | verf[1] = current->pid; | |
877 | memcpy(p->o_arg.u.verifier.data, verf, | |
878 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 879 | } |
cdd4e68b TM |
880 | p->c_arg.fh = &p->o_res.fh; |
881 | p->c_arg.stateid = &p->o_res.stateid; | |
882 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 883 | nfs4_init_opendata_res(p); |
c6d00e63 | 884 | kref_init(&p->kref); |
e56e0b78 TM |
885 | return p; |
886 | err_free: | |
887 | kfree(p); | |
888 | err: | |
889 | dput(parent); | |
890 | return NULL; | |
891 | } | |
892 | ||
c6d00e63 | 893 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 894 | { |
c6d00e63 TM |
895 | struct nfs4_opendata *p = container_of(kref, |
896 | struct nfs4_opendata, kref); | |
82a2c1b7 | 897 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
898 | |
899 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
900 | if (p->state != NULL) |
901 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
902 | nfs4_put_state_owner(p->owner); |
903 | dput(p->dir); | |
82a2c1b7 AV |
904 | dput(p->dentry); |
905 | nfs_sb_deactive(sb); | |
6926afd1 | 906 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
907 | kfree(p); |
908 | } | |
909 | ||
910 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
911 | { | |
912 | if (p != NULL) | |
913 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
914 | } |
915 | ||
06f814a3 TM |
916 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
917 | { | |
06f814a3 TM |
918 | int ret; |
919 | ||
06f814a3 | 920 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
921 | return ret; |
922 | } | |
923 | ||
dc0b027d | 924 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
925 | { |
926 | int ret = 0; | |
dc0b027d | 927 | |
536e43d1 | 928 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
929 | goto out; |
930 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 931 | case FMODE_READ: |
88069f77 TM |
932 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
933 | && state->n_rdonly != 0; | |
6ee41268 TM |
934 | break; |
935 | case FMODE_WRITE: | |
88069f77 TM |
936 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
937 | && state->n_wronly != 0; | |
6ee41268 TM |
938 | break; |
939 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
940 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
941 | && state->n_rdwr != 0; | |
6ee41268 | 942 | } |
dc0b027d | 943 | out: |
6ee41268 TM |
944 | return ret; |
945 | } | |
946 | ||
dc0b027d | 947 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 948 | { |
652f89f6 TM |
949 | if (delegation == NULL) |
950 | return 0; | |
dc0b027d | 951 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 952 | return 0; |
15c831bf | 953 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 954 | return 0; |
b7391f44 | 955 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
956 | return 1; |
957 | } | |
958 | ||
dc0b027d | 959 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 960 | { |
dc0b027d | 961 | switch (fmode) { |
e7616923 TM |
962 | case FMODE_WRITE: |
963 | state->n_wronly++; | |
964 | break; | |
965 | case FMODE_READ: | |
966 | state->n_rdonly++; | |
967 | break; | |
968 | case FMODE_READ|FMODE_WRITE: | |
969 | state->n_rdwr++; | |
970 | } | |
dc0b027d | 971 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
972 | } |
973 | ||
dc0b027d | 974 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
975 | { |
976 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
977 | nfs4_stateid_copy(&state->stateid, stateid); |
978 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 979 | switch (fmode) { |
003707c7 TM |
980 | case FMODE_READ: |
981 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
982 | break; | |
983 | case FMODE_WRITE: | |
984 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
985 | break; | |
986 | case FMODE_READ|FMODE_WRITE: | |
987 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
988 | } | |
e7616923 TM |
989 | } |
990 | ||
dc0b027d | 991 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 992 | { |
8bda4e4c | 993 | write_seqlock(&state->seqlock); |
dc0b027d | 994 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 995 | write_sequnlock(&state->seqlock); |
003707c7 TM |
996 | } |
997 | ||
dc0b027d | 998 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 999 | { |
8bda4e4c TM |
1000 | /* |
1001 | * Protect the call to nfs4_state_set_mode_locked and | |
1002 | * serialise the stateid update | |
1003 | */ | |
1004 | write_seqlock(&state->seqlock); | |
003707c7 | 1005 | if (deleg_stateid != NULL) { |
f597c537 | 1006 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1007 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1008 | } | |
1009 | if (open_stateid != NULL) | |
dc0b027d | 1010 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1011 | write_sequnlock(&state->seqlock); |
1012 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1013 | update_open_stateflags(state, fmode); |
ec073428 | 1014 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1015 | } |
1016 | ||
dc0b027d | 1017 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1018 | { |
1019 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1020 | struct nfs_delegation *deleg_cur; | |
1021 | int ret = 0; | |
1022 | ||
dc0b027d | 1023 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1024 | |
1025 | rcu_read_lock(); | |
1026 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1027 | if (deleg_cur == NULL) | |
1028 | goto no_delegation; | |
1029 | ||
1030 | spin_lock(&deleg_cur->lock); | |
1031 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 1032 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1033 | goto no_delegation_unlock; |
1034 | ||
1035 | if (delegation == NULL) | |
1036 | delegation = &deleg_cur->stateid; | |
f597c537 | 1037 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1038 | goto no_delegation_unlock; |
1039 | ||
b7391f44 | 1040 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1041 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1042 | ret = 1; |
1043 | no_delegation_unlock: | |
1044 | spin_unlock(&deleg_cur->lock); | |
1045 | no_delegation: | |
1046 | rcu_read_unlock(); | |
1047 | ||
1048 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1049 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1050 | ret = 1; |
1051 | } | |
1052 | ||
1053 | return ret; | |
1054 | } | |
1055 | ||
1056 | ||
dc0b027d | 1057 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1058 | { |
1059 | struct nfs_delegation *delegation; | |
1060 | ||
1061 | rcu_read_lock(); | |
1062 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1063 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1064 | rcu_read_unlock(); |
1065 | return; | |
1066 | } | |
1067 | rcu_read_unlock(); | |
57ec14c5 | 1068 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1069 | } |
1070 | ||
6ee41268 | 1071 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1072 | { |
1073 | struct nfs4_state *state = opendata->state; | |
1074 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1075 | struct nfs_delegation *delegation; | |
536e43d1 | 1076 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1077 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1078 | nfs4_stateid stateid; |
1079 | int ret = -EAGAIN; | |
1080 | ||
aac00a8d | 1081 | for (;;) { |
dc0b027d | 1082 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1083 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1084 | if (can_open_cached(state, fmode, open_mode)) { |
1085 | update_open_stateflags(state, fmode); | |
6ee41268 | 1086 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1087 | goto out_return_state; |
1088 | } | |
1089 | spin_unlock(&state->owner->so_lock); | |
1090 | } | |
34310430 TM |
1091 | rcu_read_lock(); |
1092 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1093 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1094 | rcu_read_unlock(); |
aac00a8d | 1095 | break; |
34310430 | 1096 | } |
aac00a8d | 1097 | /* Save the delegation */ |
f597c537 | 1098 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1099 | rcu_read_unlock(); |
af22f94a | 1100 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1101 | if (ret != 0) |
1102 | goto out; | |
1103 | ret = -EAGAIN; | |
34310430 TM |
1104 | |
1105 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1106 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1107 | goto out_return_state; |
aac00a8d | 1108 | } |
aac00a8d TM |
1109 | out: |
1110 | return ERR_PTR(ret); | |
1111 | out_return_state: | |
1112 | atomic_inc(&state->count); | |
1113 | return state; | |
1114 | } | |
1115 | ||
24ac23ab TM |
1116 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1117 | { | |
1118 | struct inode *inode; | |
1119 | struct nfs4_state *state = NULL; | |
003707c7 | 1120 | struct nfs_delegation *delegation; |
1b370bc2 | 1121 | int ret; |
24ac23ab | 1122 | |
aac00a8d | 1123 | if (!data->rpc_done) { |
6ee41268 | 1124 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1125 | goto out; |
1126 | } | |
1127 | ||
1b370bc2 | 1128 | ret = -EAGAIN; |
24ac23ab | 1129 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1130 | goto err; |
24ac23ab | 1131 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1132 | ret = PTR_ERR(inode); |
03f28e3a | 1133 | if (IS_ERR(inode)) |
1b370bc2 TM |
1134 | goto err; |
1135 | ret = -ENOMEM; | |
24ac23ab TM |
1136 | state = nfs4_get_open_state(inode, data->owner); |
1137 | if (state == NULL) | |
1b370bc2 | 1138 | goto err_put_inode; |
549d6ed5 | 1139 | if (data->o_res.delegation_type != 0) { |
4e0038b6 | 1140 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; |
549d6ed5 TM |
1141 | int delegation_flags = 0; |
1142 | ||
003707c7 TM |
1143 | rcu_read_lock(); |
1144 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1145 | if (delegation) | |
1146 | delegation_flags = delegation->flags; | |
1147 | rcu_read_unlock(); | |
652f89f6 TM |
1148 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { |
1149 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1150 | "returning a delegation for " | |
1151 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
4e0038b6 | 1152 | clp->cl_hostname); |
652f89f6 | 1153 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1154 | nfs_inode_set_delegation(state->inode, |
1155 | data->owner->so_cred, | |
1156 | &data->o_res); | |
1157 | else | |
1158 | nfs_inode_reclaim_delegation(state->inode, | |
1159 | data->owner->so_cred, | |
1160 | &data->o_res); | |
1161 | } | |
34310430 TM |
1162 | |
1163 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1164 | data->o_arg.fmode); |
24ac23ab | 1165 | iput(inode); |
aac00a8d | 1166 | out: |
24ac23ab | 1167 | return state; |
1b370bc2 TM |
1168 | err_put_inode: |
1169 | iput(inode); | |
1170 | err: | |
1171 | return ERR_PTR(ret); | |
24ac23ab TM |
1172 | } |
1173 | ||
864472e9 TM |
1174 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1175 | { | |
1176 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1177 | struct nfs_open_context *ctx; | |
1178 | ||
1179 | spin_lock(&state->inode->i_lock); | |
1180 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1181 | if (ctx->state != state) | |
1182 | continue; | |
1183 | get_nfs_open_context(ctx); | |
1184 | spin_unlock(&state->inode->i_lock); | |
1185 | return ctx; | |
1186 | } | |
1187 | spin_unlock(&state->inode->i_lock); | |
1188 | return ERR_PTR(-ENOENT); | |
1189 | } | |
1190 | ||
6f220ed5 TM |
1191 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1192 | { | |
1193 | struct nfs4_opendata *opendata; | |
1194 | ||
3d4ff43d | 1195 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1196 | if (opendata == NULL) |
1197 | return ERR_PTR(-ENOMEM); | |
1198 | opendata->state = state; | |
1199 | atomic_inc(&state->count); | |
1200 | return opendata; | |
1201 | } | |
1202 | ||
dc0b027d | 1203 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1204 | { |
2ced46c2 | 1205 | struct nfs4_state *newstate; |
864472e9 TM |
1206 | int ret; |
1207 | ||
dc0b027d TM |
1208 | opendata->o_arg.open_flags = 0; |
1209 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1210 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1211 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1212 | nfs4_init_opendata_res(opendata); | |
b257957e | 1213 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1214 | if (ret != 0) |
1215 | return ret; | |
2ced46c2 | 1216 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1217 | if (IS_ERR(newstate)) |
1218 | return PTR_ERR(newstate); | |
643168c2 | 1219 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1220 | *res = newstate; |
864472e9 TM |
1221 | return 0; |
1222 | } | |
1223 | ||
1224 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1225 | { | |
864472e9 | 1226 | struct nfs4_state *newstate; |
864472e9 TM |
1227 | int ret; |
1228 | ||
1229 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1230 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1231 | smp_rmb(); |
1232 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1233 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1234 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1235 | if (ret != 0) |
1236 | return ret; | |
2ced46c2 TM |
1237 | if (newstate != state) |
1238 | return -ESTALE; | |
864472e9 TM |
1239 | } |
1240 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1241 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1242 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1243 | if (ret != 0) |
1244 | return ret; | |
2ced46c2 TM |
1245 | if (newstate != state) |
1246 | return -ESTALE; | |
864472e9 TM |
1247 | } |
1248 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1249 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1250 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1251 | if (ret != 0) |
1252 | return ret; | |
2ced46c2 TM |
1253 | if (newstate != state) |
1254 | return -ESTALE; | |
864472e9 | 1255 | } |
1ac7e2fd TM |
1256 | /* |
1257 | * We may have performed cached opens for all three recoveries. | |
1258 | * Check if we need to update the current stateid. | |
1259 | */ | |
1260 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1261 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1262 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1263 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1264 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1265 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1266 | } |
864472e9 TM |
1267 | return 0; |
1268 | } | |
1269 | ||
1da177e4 LT |
1270 | /* |
1271 | * OPEN_RECLAIM: | |
1272 | * reclaim state on the server after a reboot. | |
1da177e4 | 1273 | */ |
539cd03a | 1274 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1275 | { |
1ac7e2fd | 1276 | struct nfs_delegation *delegation; |
864472e9 | 1277 | struct nfs4_opendata *opendata; |
dc0b027d | 1278 | fmode_t delegation_type = 0; |
1da177e4 LT |
1279 | int status; |
1280 | ||
6f220ed5 TM |
1281 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1282 | if (IS_ERR(opendata)) | |
1283 | return PTR_ERR(opendata); | |
864472e9 TM |
1284 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1285 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1286 | rcu_read_lock(); |
1287 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1288 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1289 | delegation_type = delegation->type; |
1ac7e2fd | 1290 | rcu_read_unlock(); |
864472e9 TM |
1291 | opendata->o_arg.u.delegation_type = delegation_type; |
1292 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1293 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1294 | return status; |
1295 | } | |
1296 | ||
539cd03a | 1297 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1298 | { |
1299 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1300 | struct nfs4_exception exception = { }; | |
1301 | int err; | |
1302 | do { | |
539cd03a | 1303 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1304 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1305 | break; |
1306 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1307 | } while (exception.retry); |
1308 | return err; | |
1309 | } | |
1310 | ||
864472e9 TM |
1311 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1312 | { | |
1313 | struct nfs_open_context *ctx; | |
1314 | int ret; | |
1315 | ||
1316 | ctx = nfs4_state_find_open_context(state); | |
1317 | if (IS_ERR(ctx)) | |
1318 | return PTR_ERR(ctx); | |
539cd03a | 1319 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1320 | put_nfs_open_context(ctx); |
1321 | return ret; | |
1322 | } | |
1323 | ||
13437e12 | 1324 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1325 | { |
e56e0b78 | 1326 | struct nfs4_opendata *opendata; |
864472e9 | 1327 | int ret; |
1da177e4 | 1328 | |
6f220ed5 TM |
1329 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1330 | if (IS_ERR(opendata)) | |
1331 | return PTR_ERR(opendata); | |
e56e0b78 | 1332 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1333 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1334 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1335 | nfs4_opendata_put(opendata); |
864472e9 | 1336 | return ret; |
1da177e4 LT |
1337 | } |
1338 | ||
13437e12 | 1339 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1340 | { |
1341 | struct nfs4_exception exception = { }; | |
539cd03a | 1342 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1343 | int err; |
1344 | do { | |
13437e12 | 1345 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1346 | switch (err) { |
1347 | case 0: | |
965b5d67 TM |
1348 | case -ENOENT: |
1349 | case -ESTALE: | |
1350 | goto out; | |
bcfa49f6 RL |
1351 | case -NFS4ERR_BADSESSION: |
1352 | case -NFS4ERR_BADSLOT: | |
1353 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1354 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1355 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 1356 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
bcfa49f6 | 1357 | goto out; |
1da177e4 LT |
1358 | case -NFS4ERR_STALE_CLIENTID: |
1359 | case -NFS4ERR_STALE_STATEID: | |
1360 | case -NFS4ERR_EXPIRED: | |
1361 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1362 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1363 | goto out; |
1364 | case -ERESTARTSYS: | |
1365 | /* | |
1366 | * The show must go on: exit, but mark the | |
1367 | * stateid as needing recovery. | |
1368 | */ | |
a1d0b5ee | 1369 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1370 | case -NFS4ERR_ADMIN_REVOKED: |
1371 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1372 | nfs_inode_find_state_and_recover(state->inode, |
1373 | stateid); | |
0400a6b0 | 1374 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1375 | case -EKEYEXPIRED: |
1376 | /* | |
1377 | * User RPCSEC_GSS context has expired. | |
1378 | * We cannot recover this stateid now, so | |
1379 | * skip it and allow recovery thread to | |
1380 | * proceed. | |
1381 | */ | |
965b5d67 TM |
1382 | case -ENOMEM: |
1383 | err = 0; | |
1384 | goto out; | |
1da177e4 LT |
1385 | } |
1386 | err = nfs4_handle_exception(server, err, &exception); | |
1387 | } while (exception.retry); | |
965b5d67 | 1388 | out: |
1da177e4 LT |
1389 | return err; |
1390 | } | |
1391 | ||
cdd4e68b TM |
1392 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1393 | { | |
1394 | struct nfs4_opendata *data = calldata; | |
1395 | ||
1396 | data->rpc_status = task->tk_status; | |
26e976a8 | 1397 | if (data->rpc_status == 0) { |
f597c537 | 1398 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1399 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1400 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1401 | data->rpc_done = 1; |
26e976a8 | 1402 | } |
cdd4e68b TM |
1403 | } |
1404 | ||
1405 | static void nfs4_open_confirm_release(void *calldata) | |
1406 | { | |
1407 | struct nfs4_opendata *data = calldata; | |
1408 | struct nfs4_state *state = NULL; | |
1409 | ||
1410 | /* If this request hasn't been cancelled, do nothing */ | |
1411 | if (data->cancelled == 0) | |
1412 | goto out_free; | |
1413 | /* In case of error, no cleanup! */ | |
3e309914 | 1414 | if (!data->rpc_done) |
cdd4e68b | 1415 | goto out_free; |
cdd4e68b | 1416 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1417 | if (!IS_ERR(state)) |
643168c2 | 1418 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1419 | out_free: |
c6d00e63 | 1420 | nfs4_opendata_put(data); |
cdd4e68b TM |
1421 | } |
1422 | ||
1423 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1424 | .rpc_call_done = nfs4_open_confirm_done, |
1425 | .rpc_release = nfs4_open_confirm_release, | |
1426 | }; | |
1427 | ||
1428 | /* | |
1429 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1430 | */ | |
1431 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1432 | { | |
1433 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1434 | struct rpc_task *task; | |
5138fde0 TM |
1435 | struct rpc_message msg = { |
1436 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1437 | .rpc_argp = &data->c_arg, | |
1438 | .rpc_resp = &data->c_res, | |
1439 | .rpc_cred = data->owner->so_cred, | |
1440 | }; | |
c970aa85 TM |
1441 | struct rpc_task_setup task_setup_data = { |
1442 | .rpc_client = server->client, | |
5138fde0 | 1443 | .rpc_message = &msg, |
c970aa85 TM |
1444 | .callback_ops = &nfs4_open_confirm_ops, |
1445 | .callback_data = data, | |
101070ca | 1446 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1447 | .flags = RPC_TASK_ASYNC, |
1448 | }; | |
1da177e4 LT |
1449 | int status; |
1450 | ||
c6d00e63 | 1451 | kref_get(&data->kref); |
3e309914 TM |
1452 | data->rpc_done = 0; |
1453 | data->rpc_status = 0; | |
5138fde0 | 1454 | data->timestamp = jiffies; |
c970aa85 | 1455 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1456 | if (IS_ERR(task)) |
cdd4e68b | 1457 | return PTR_ERR(task); |
cdd4e68b TM |
1458 | status = nfs4_wait_for_completion_rpc_task(task); |
1459 | if (status != 0) { | |
1460 | data->cancelled = 1; | |
1461 | smp_wmb(); | |
1462 | } else | |
1463 | status = data->rpc_status; | |
e6b3c4db | 1464 | rpc_put_task(task); |
1da177e4 LT |
1465 | return status; |
1466 | } | |
1467 | ||
24ac23ab | 1468 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1469 | { |
24ac23ab TM |
1470 | struct nfs4_opendata *data = calldata; |
1471 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1472 | |
24ac23ab TM |
1473 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1474 | return; | |
aac00a8d TM |
1475 | /* |
1476 | * Check if we still need to send an OPEN call, or if we can use | |
1477 | * a delegation instead. | |
1478 | */ | |
1479 | if (data->state != NULL) { | |
1480 | struct nfs_delegation *delegation; | |
1481 | ||
dc0b027d | 1482 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1483 | goto out_no_action; |
aac00a8d TM |
1484 | rcu_read_lock(); |
1485 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1486 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1487 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1488 | goto unlock_no_action; | |
aac00a8d TM |
1489 | rcu_read_unlock(); |
1490 | } | |
95b72eb0 | 1491 | /* Update client id. */ |
1f0e890d | 1492 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1493 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1494 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1495 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1496 | } | |
26e976a8 | 1497 | data->timestamp = jiffies; |
035168ab | 1498 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1499 | &data->o_arg.seq_args, |
9d12b216 | 1500 | &data->o_res.seq_res, task)) |
d898528c | 1501 | return; |
5138fde0 | 1502 | rpc_call_start(task); |
6ee41268 | 1503 | return; |
652f89f6 TM |
1504 | unlock_no_action: |
1505 | rcu_read_unlock(); | |
6ee41268 TM |
1506 | out_no_action: |
1507 | task->tk_action = NULL; | |
1508 | ||
24ac23ab | 1509 | } |
1da177e4 | 1510 | |
b257957e AB |
1511 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1512 | { | |
1513 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1514 | nfs4_open_prepare(task, calldata); | |
1515 | } | |
1516 | ||
24ac23ab TM |
1517 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1518 | { | |
1519 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1520 | |
24ac23ab | 1521 | data->rpc_status = task->tk_status; |
d898528c | 1522 | |
14516c3a TM |
1523 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1524 | return; | |
d898528c | 1525 | |
24ac23ab TM |
1526 | if (task->tk_status == 0) { |
1527 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1528 | case S_IFREG: |
1529 | break; | |
1530 | case S_IFLNK: | |
24ac23ab | 1531 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1532 | break; |
1533 | case S_IFDIR: | |
24ac23ab | 1534 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1535 | break; |
1536 | default: | |
24ac23ab | 1537 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1538 | } |
26e976a8 | 1539 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1540 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1541 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1542 | } |
3e309914 | 1543 | data->rpc_done = 1; |
24ac23ab | 1544 | } |
6f926b5b | 1545 | |
24ac23ab TM |
1546 | static void nfs4_open_release(void *calldata) |
1547 | { | |
1548 | struct nfs4_opendata *data = calldata; | |
1549 | struct nfs4_state *state = NULL; | |
1550 | ||
1551 | /* If this request hasn't been cancelled, do nothing */ | |
1552 | if (data->cancelled == 0) | |
1553 | goto out_free; | |
1554 | /* In case of error, no cleanup! */ | |
3e309914 | 1555 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1556 | goto out_free; |
1557 | /* In case we need an open_confirm, no cleanup! */ | |
1558 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1559 | goto out_free; | |
24ac23ab | 1560 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1561 | if (!IS_ERR(state)) |
643168c2 | 1562 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1563 | out_free: |
c6d00e63 | 1564 | nfs4_opendata_put(data); |
24ac23ab TM |
1565 | } |
1566 | ||
1567 | static const struct rpc_call_ops nfs4_open_ops = { | |
1568 | .rpc_call_prepare = nfs4_open_prepare, | |
1569 | .rpc_call_done = nfs4_open_done, | |
1570 | .rpc_release = nfs4_open_release, | |
1571 | }; | |
1572 | ||
b257957e AB |
1573 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1574 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1575 | .rpc_call_done = nfs4_open_done, | |
1576 | .rpc_release = nfs4_open_release, | |
1577 | }; | |
1578 | ||
1579 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1580 | { |
1581 | struct inode *dir = data->dir->d_inode; | |
1582 | struct nfs_server *server = NFS_SERVER(dir); | |
1583 | struct nfs_openargs *o_arg = &data->o_arg; | |
1584 | struct nfs_openres *o_res = &data->o_res; | |
1585 | struct rpc_task *task; | |
5138fde0 TM |
1586 | struct rpc_message msg = { |
1587 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1588 | .rpc_argp = o_arg, | |
1589 | .rpc_resp = o_res, | |
1590 | .rpc_cred = data->owner->so_cred, | |
1591 | }; | |
c970aa85 TM |
1592 | struct rpc_task_setup task_setup_data = { |
1593 | .rpc_client = server->client, | |
5138fde0 | 1594 | .rpc_message = &msg, |
c970aa85 TM |
1595 | .callback_ops = &nfs4_open_ops, |
1596 | .callback_data = data, | |
101070ca | 1597 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1598 | .flags = RPC_TASK_ASYNC, |
1599 | }; | |
24ac23ab TM |
1600 | int status; |
1601 | ||
9d12b216 | 1602 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1603 | kref_get(&data->kref); |
3e309914 TM |
1604 | data->rpc_done = 0; |
1605 | data->rpc_status = 0; | |
2ced46c2 | 1606 | data->cancelled = 0; |
b257957e AB |
1607 | if (isrecover) |
1608 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1609 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1610 | if (IS_ERR(task)) |
1611 | return PTR_ERR(task); | |
1612 | status = nfs4_wait_for_completion_rpc_task(task); | |
1613 | if (status != 0) { | |
1614 | data->cancelled = 1; | |
1615 | smp_wmb(); | |
1616 | } else | |
1617 | status = data->rpc_status; | |
1618 | rpc_put_task(task); | |
1619 | ||
1620 | return status; | |
1621 | } | |
1622 | ||
1623 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1624 | { | |
1625 | struct inode *dir = data->dir->d_inode; | |
1626 | struct nfs_openres *o_res = &data->o_res; | |
1627 | int status; | |
1628 | ||
1629 | status = nfs4_run_open_task(data, 1); | |
1630 | if (status != 0 || !data->rpc_done) | |
1631 | return status; | |
1632 | ||
6926afd1 TM |
1633 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1634 | ||
b257957e AB |
1635 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1636 | status = _nfs4_proc_open_confirm(data); | |
1637 | if (status != 0) | |
1638 | return status; | |
1639 | } | |
1640 | ||
1641 | return status; | |
1642 | } | |
1643 | ||
1644 | /* | |
1645 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1646 | */ | |
1647 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1648 | { | |
1649 | struct inode *dir = data->dir->d_inode; | |
1650 | struct nfs_server *server = NFS_SERVER(dir); | |
1651 | struct nfs_openargs *o_arg = &data->o_arg; | |
1652 | struct nfs_openres *o_res = &data->o_res; | |
1653 | int status; | |
1654 | ||
1655 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1656 | if (!data->rpc_done) |
1657 | return status; | |
1658 | if (status != 0) { | |
1659 | if (status == -NFS4ERR_BADNAME && | |
1660 | !(o_arg->open_flags & O_CREAT)) | |
1661 | return -ENOENT; | |
24ac23ab | 1662 | return status; |
08ef7bd3 | 1663 | } |
24ac23ab | 1664 | |
6926afd1 TM |
1665 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1666 | ||
90ff0c54 | 1667 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1668 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1669 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1670 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1671 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1672 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1673 | if (status != 0) |
24ac23ab | 1674 | return status; |
1da177e4 LT |
1675 | } |
1676 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1677 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1678 | return 0; |
1da177e4 LT |
1679 | } |
1680 | ||
d83217c1 | 1681 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1682 | { |
a78cb57a | 1683 | unsigned int loop; |
6b30954e | 1684 | int ret; |
58d9714a | 1685 | |
a78cb57a | 1686 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1687 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1688 | if (ret != 0) |
a78cb57a | 1689 | break; |
e598d843 TM |
1690 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1691 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1692 | break; |
0400a6b0 | 1693 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1694 | ret = -EIO; |
6b30954e | 1695 | } |
a78cb57a | 1696 | return ret; |
58d9714a TM |
1697 | } |
1698 | ||
d83217c1 AA |
1699 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1700 | { | |
1701 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1702 | } | |
1703 | ||
1da177e4 LT |
1704 | /* |
1705 | * OPEN_EXPIRED: | |
1706 | * reclaim state on the server after a network partition. | |
1707 | * Assumes caller holds the appropriate lock | |
1708 | */ | |
539cd03a | 1709 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1710 | { |
e56e0b78 | 1711 | struct nfs4_opendata *opendata; |
864472e9 | 1712 | int ret; |
1da177e4 | 1713 | |
6f220ed5 TM |
1714 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1715 | if (IS_ERR(opendata)) | |
1716 | return PTR_ERR(opendata); | |
864472e9 | 1717 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1718 | if (ret == -ESTALE) |
3d4ff43d | 1719 | d_drop(ctx->dentry); |
c6d00e63 | 1720 | nfs4_opendata_put(opendata); |
864472e9 | 1721 | return ret; |
1da177e4 LT |
1722 | } |
1723 | ||
a9ed2e25 | 1724 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1725 | { |
539cd03a | 1726 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1727 | struct nfs4_exception exception = { }; |
1728 | int err; | |
1729 | ||
1730 | do { | |
539cd03a | 1731 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1732 | switch (err) { |
1733 | default: | |
1734 | goto out; | |
1735 | case -NFS4ERR_GRACE: | |
1736 | case -NFS4ERR_DELAY: | |
1737 | nfs4_handle_exception(server, err, &exception); | |
1738 | err = 0; | |
1739 | } | |
202b50dc | 1740 | } while (exception.retry); |
a9ed2e25 | 1741 | out: |
202b50dc TM |
1742 | return err; |
1743 | } | |
1744 | ||
1da177e4 LT |
1745 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1746 | { | |
1da177e4 | 1747 | struct nfs_open_context *ctx; |
864472e9 | 1748 | int ret; |
1da177e4 | 1749 | |
864472e9 TM |
1750 | ctx = nfs4_state_find_open_context(state); |
1751 | if (IS_ERR(ctx)) | |
1752 | return PTR_ERR(ctx); | |
539cd03a | 1753 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1754 | put_nfs_open_context(ctx); |
1755 | return ret; | |
1da177e4 LT |
1756 | } |
1757 | ||
f062eb6c | 1758 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 1759 | static int nfs41_check_expired_stateid(struct nfs4_state *state, nfs4_stateid *stateid, unsigned int flags) |
f062eb6c | 1760 | { |
b01dd1d8 | 1761 | int status = NFS_OK; |
f062eb6c BS |
1762 | struct nfs_server *server = NFS_SERVER(state->inode); |
1763 | ||
b01dd1d8 BS |
1764 | if (state->flags & flags) { |
1765 | status = nfs41_test_stateid(server, stateid); | |
1766 | if (status != NFS_OK) { | |
1767 | nfs41_free_stateid(server, stateid); | |
1768 | state->flags &= ~flags; | |
1769 | } | |
1770 | } | |
1771 | return status; | |
1772 | } | |
1773 | ||
1774 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1775 | { | |
1776 | int deleg_status, open_status; | |
1777 | int deleg_flags = 1 << NFS_DELEGATED_STATE; | |
1778 | int open_flags = (1 << NFS_O_RDONLY_STATE) | (1 << NFS_O_WRONLY_STATE) | (1 << NFS_O_RDWR_STATE); | |
1779 | ||
1780 | deleg_status = nfs41_check_expired_stateid(state, &state->stateid, deleg_flags); | |
1781 | open_status = nfs41_check_expired_stateid(state, &state->open_stateid, open_flags); | |
1782 | ||
1783 | if ((deleg_status == NFS_OK) && (open_status == NFS_OK)) | |
1784 | return NFS_OK; | |
f062eb6c BS |
1785 | return nfs4_open_expired(sp, state); |
1786 | } | |
1787 | #endif | |
1788 | ||
aa53ed54 JL |
1789 | /* |
1790 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1791 | * fields corresponding to attributes that were used to store the verifier. | |
1792 | * Make sure we clobber those fields in the later setattr call | |
1793 | */ | |
1794 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1795 | { | |
1796 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1797 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1798 | sattr->ia_valid |= ATTR_ATIME; | |
1799 | ||
1800 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1801 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1802 | sattr->ia_valid |= ATTR_MTIME; | |
1803 | } | |
1804 | ||
1da177e4 | 1805 | /* |
24ac23ab | 1806 | * Returns a referenced nfs4_state |
1da177e4 | 1807 | */ |
82be417a AA |
1808 | static int _nfs4_do_open(struct inode *dir, |
1809 | struct dentry *dentry, | |
1810 | fmode_t fmode, | |
1811 | int flags, | |
1812 | struct iattr *sattr, | |
1813 | struct rpc_cred *cred, | |
1814 | struct nfs4_state **res, | |
1815 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1816 | { |
1817 | struct nfs4_state_owner *sp; | |
1818 | struct nfs4_state *state = NULL; | |
1819 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1820 | struct nfs4_opendata *opendata; |
aac00a8d | 1821 | int status; |
1da177e4 LT |
1822 | |
1823 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1824 | status = -ENOMEM; |
d1e284d5 TM |
1825 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1826 | if (sp == NULL) { | |
1da177e4 LT |
1827 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1828 | goto out_err; | |
1829 | } | |
58d9714a TM |
1830 | status = nfs4_recover_expired_lease(server); |
1831 | if (status != 0) | |
b4454fe1 | 1832 | goto err_put_state_owner; |
82a2c1b7 AV |
1833 | if (dentry->d_inode != NULL) |
1834 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1835 | status = -ENOMEM; |
82a2c1b7 | 1836 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1837 | if (opendata == NULL) |
95d35cb4 | 1838 | goto err_put_state_owner; |
1da177e4 | 1839 | |
82be417a AA |
1840 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
1841 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
1842 | if (!opendata->f_attr.mdsthreshold) | |
1843 | goto err_opendata_put; | |
1549210f | 1844 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 1845 | } |
82a2c1b7 AV |
1846 | if (dentry->d_inode != NULL) |
1847 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1848 | |
24ac23ab | 1849 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1850 | if (status != 0) |
c6d00e63 | 1851 | goto err_opendata_put; |
1da177e4 | 1852 | |
24ac23ab | 1853 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1854 | status = PTR_ERR(state); |
1855 | if (IS_ERR(state)) | |
c6d00e63 | 1856 | goto err_opendata_put; |
0df5dd4a | 1857 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1858 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1859 | |
1860 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1861 | nfs4_exclusive_attrset(opendata, sattr); | |
1862 | ||
1863 | nfs_fattr_init(opendata->o_res.f_attr); | |
1864 | status = nfs4_do_setattr(state->inode, cred, | |
1865 | opendata->o_res.f_attr, sattr, | |
1866 | state); | |
1867 | if (status == 0) | |
1868 | nfs_setattr_update_inode(state->inode, sattr); | |
1869 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1870 | } | |
82be417a AA |
1871 | |
1872 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
1873 | *ctx_th = opendata->f_attr.mdsthreshold; | |
1874 | else | |
1875 | kfree(opendata->f_attr.mdsthreshold); | |
1876 | opendata->f_attr.mdsthreshold = NULL; | |
1877 | ||
c6d00e63 | 1878 | nfs4_opendata_put(opendata); |
1da177e4 | 1879 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1880 | *res = state; |
1881 | return 0; | |
c6d00e63 | 1882 | err_opendata_put: |
82be417a | 1883 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 1884 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
1885 | err_put_state_owner: |
1886 | nfs4_put_state_owner(sp); | |
1da177e4 | 1887 | out_err: |
1da177e4 LT |
1888 | *res = NULL; |
1889 | return status; | |
1890 | } | |
1891 | ||
1892 | ||
82be417a AA |
1893 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
1894 | struct dentry *dentry, | |
1895 | fmode_t fmode, | |
1896 | int flags, | |
1897 | struct iattr *sattr, | |
1898 | struct rpc_cred *cred, | |
1899 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1900 | { |
1901 | struct nfs4_exception exception = { }; | |
1902 | struct nfs4_state *res; | |
1903 | int status; | |
1904 | ||
2d0dbc6a | 1905 | fmode &= FMODE_READ|FMODE_WRITE; |
1da177e4 | 1906 | do { |
82be417a AA |
1907 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
1908 | &res, ctx_th); | |
1da177e4 LT |
1909 | if (status == 0) |
1910 | break; | |
1911 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1912 | * book-keeping w.r.t. state-changing operations | |
1913 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1914 | * It is actually a sign of a bug on the client or on the server. | |
1915 | * | |
1916 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1917 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1918 | * have unhashed the old state_owner for us, and that we can |
1919 | * therefore safely retry using a new one. We should still warn | |
1920 | * the user though... | |
1921 | */ | |
1922 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 1923 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
1924 | " returned a bad sequence-id error!\n", |
1925 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1926 | exception.retry = 1; |
1927 | continue; | |
1928 | } | |
550f5747 TM |
1929 | /* |
1930 | * BAD_STATEID on OPEN means that the server cancelled our | |
1931 | * state before it received the OPEN_CONFIRM. | |
1932 | * Recover by retrying the request as per the discussion | |
1933 | * on Page 181 of RFC3530. | |
1934 | */ | |
1935 | if (status == -NFS4ERR_BAD_STATEID) { | |
1936 | exception.retry = 1; | |
1937 | continue; | |
1938 | } | |
aac00a8d TM |
1939 | if (status == -EAGAIN) { |
1940 | /* We must have found a delegation */ | |
1941 | exception.retry = 1; | |
1942 | continue; | |
1943 | } | |
1da177e4 LT |
1944 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1945 | status, &exception)); | |
1946 | } while (exception.retry); | |
1947 | return res; | |
1948 | } | |
1949 | ||
659bfcd6 TM |
1950 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1951 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1952 | struct nfs4_state *state) | |
1da177e4 | 1953 | { |
3e4f6290 | 1954 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1955 | struct nfs_setattrargs arg = { |
3e4f6290 | 1956 | .fh = NFS_FH(inode), |
1da177e4 LT |
1957 | .iap = sattr, |
1958 | .server = server, | |
1959 | .bitmask = server->attr_bitmask, | |
1960 | }; | |
1961 | struct nfs_setattrres res = { | |
1962 | .fattr = fattr, | |
1963 | .server = server, | |
1964 | }; | |
1965 | struct rpc_message msg = { | |
659bfcd6 TM |
1966 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1967 | .rpc_argp = &arg, | |
1968 | .rpc_resp = &res, | |
1969 | .rpc_cred = cred, | |
1da177e4 | 1970 | }; |
26e976a8 | 1971 | unsigned long timestamp = jiffies; |
65e4308d | 1972 | int status; |
1da177e4 | 1973 | |
0e574af1 | 1974 | nfs_fattr_init(fattr); |
1da177e4 | 1975 | |
4fc8796d TM |
1976 | if (state != NULL) { |
1977 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
1978 | current->files, current->tgid); | |
1979 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, | |
1980 | FMODE_WRITE)) { | |
3e4f6290 | 1981 | /* Use that stateid */ |
08e9eac4 | 1982 | } else |
f597c537 | 1983 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 1984 | |
7c513058 | 1985 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1986 | if (status == 0 && state != NULL) |
1987 | renew_lease(server, timestamp); | |
65e4308d | 1988 | return status; |
1da177e4 LT |
1989 | } |
1990 | ||
659bfcd6 TM |
1991 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1992 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1993 | struct nfs4_state *state) | |
1da177e4 | 1994 | { |
3e4f6290 | 1995 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
1996 | struct nfs4_exception exception = { |
1997 | .state = state, | |
3114ea7a | 1998 | .inode = inode, |
a1d0b5ee | 1999 | }; |
1da177e4 LT |
2000 | int err; |
2001 | do { | |
451146be TM |
2002 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2003 | switch (err) { | |
2004 | case -NFS4ERR_OPENMODE: | |
2005 | if (state && !(state->state & FMODE_WRITE)) { | |
2006 | err = -EBADF; | |
2007 | if (sattr->ia_valid & ATTR_OPEN) | |
2008 | err = -EACCES; | |
2009 | goto out; | |
2010 | } | |
2011 | } | |
2012 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2013 | } while (exception.retry); |
451146be | 2014 | out: |
1da177e4 LT |
2015 | return err; |
2016 | } | |
2017 | ||
2018 | struct nfs4_closedata { | |
2019 | struct inode *inode; | |
2020 | struct nfs4_state *state; | |
2021 | struct nfs_closeargs arg; | |
2022 | struct nfs_closeres res; | |
516a6af6 | 2023 | struct nfs_fattr fattr; |
26e976a8 | 2024 | unsigned long timestamp; |
f7e8917a FI |
2025 | bool roc; |
2026 | u32 roc_barrier; | |
1da177e4 LT |
2027 | }; |
2028 | ||
963d8fe5 | 2029 | static void nfs4_free_closedata(void *data) |
9512135d | 2030 | { |
963d8fe5 TM |
2031 | struct nfs4_closedata *calldata = data; |
2032 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2033 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2034 | |
f7e8917a FI |
2035 | if (calldata->roc) |
2036 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2037 | nfs4_put_open_state(calldata->state); |
2038 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2039 | nfs4_put_state_owner(sp); |
643168c2 | 2040 | nfs_sb_deactive(sb); |
9512135d TM |
2041 | kfree(calldata); |
2042 | } | |
2043 | ||
88069f77 TM |
2044 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2045 | fmode_t fmode) | |
2046 | { | |
2047 | spin_lock(&state->owner->so_lock); | |
2048 | if (!(fmode & FMODE_READ)) | |
2049 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2050 | if (!(fmode & FMODE_WRITE)) | |
2051 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2052 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2053 | spin_unlock(&state->owner->so_lock); | |
2054 | } | |
2055 | ||
963d8fe5 | 2056 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2057 | { |
963d8fe5 | 2058 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2059 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2060 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2061 | ||
a3ca5651 | 2062 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2063 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2064 | return; | |
1da177e4 LT |
2065 | /* hmm. we are done with the inode, and in the process of freeing |
2066 | * the state_owner. we keep this around to process errors | |
2067 | */ | |
1da177e4 LT |
2068 | switch (task->tk_status) { |
2069 | case 0: | |
f7e8917a FI |
2070 | if (calldata->roc) |
2071 | pnfs_roc_set_barrier(state->inode, | |
2072 | calldata->roc_barrier); | |
45328c35 | 2073 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2074 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2075 | nfs4_close_clear_stateid_flags(state, |
2076 | calldata->arg.fmode); | |
1da177e4 LT |
2077 | break; |
2078 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2079 | case -NFS4ERR_OLD_STATEID: |
2080 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2081 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2082 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2083 | break; |
1da177e4 | 2084 | default: |
72211dbe TM |
2085 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2086 | rpc_restart_call_prepare(task); | |
1da177e4 | 2087 | } |
72211dbe | 2088 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2089 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2090 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2091 | } |
2092 | ||
4ce70ada | 2093 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2094 | { |
4ce70ada | 2095 | struct nfs4_closedata *calldata = data; |
9512135d | 2096 | struct nfs4_state *state = calldata->state; |
88069f77 | 2097 | int call_close = 0; |
9512135d | 2098 | |
a3ca5651 | 2099 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2100 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2101 | return; |
003707c7 | 2102 | |
88069f77 TM |
2103 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2104 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2105 | spin_lock(&state->owner->so_lock); |
003707c7 | 2106 | /* Calculate the change in open mode */ |
e7616923 | 2107 | if (state->n_rdwr == 0) { |
003707c7 | 2108 | if (state->n_rdonly == 0) { |
88069f77 TM |
2109 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2110 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2111 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2112 | } |
2113 | if (state->n_wronly == 0) { | |
88069f77 TM |
2114 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2115 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2116 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2117 | } |
e7616923 | 2118 | } |
4cecb76f | 2119 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2120 | |
2121 | if (!call_close) { | |
963d8fe5 TM |
2122 | /* Note: exit _without_ calling nfs4_close_done */ |
2123 | task->tk_action = NULL; | |
a3ca5651 | 2124 | goto out; |
9512135d | 2125 | } |
88069f77 | 2126 | |
f7e8917a | 2127 | if (calldata->arg.fmode == 0) { |
88069f77 | 2128 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2129 | if (calldata->roc && |
2130 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2131 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2132 | task, NULL); | |
a3ca5651 | 2133 | goto out; |
f7e8917a FI |
2134 | } |
2135 | } | |
88069f77 | 2136 | |
516a6af6 | 2137 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2138 | calldata->timestamp = jiffies; |
035168ab | 2139 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
9d12b216 TM |
2140 | &calldata->arg.seq_args, |
2141 | &calldata->res.seq_res, | |
2142 | task)) | |
a3ca5651 | 2143 | goto out; |
5138fde0 | 2144 | rpc_call_start(task); |
a3ca5651 CL |
2145 | out: |
2146 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2147 | } |
2148 | ||
963d8fe5 | 2149 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2150 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2151 | .rpc_call_done = nfs4_close_done, |
2152 | .rpc_release = nfs4_free_closedata, | |
2153 | }; | |
2154 | ||
1da177e4 LT |
2155 | /* |
2156 | * It is possible for data to be read/written from a mem-mapped file | |
2157 | * after the sys_close call (which hits the vfs layer as a flush). | |
2158 | * This means that we can't safely call nfsv4 close on a file until | |
2159 | * the inode is cleared. This in turn means that we are not good | |
2160 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2161 | * share state even when we are done with one of the three share | |
2162 | * stateid's in the inode. | |
2163 | * | |
2164 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2165 | */ | |
643168c2 | 2166 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2167 | { |
4a35bd41 | 2168 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2169 | struct nfs4_closedata *calldata; |
b39e625b TM |
2170 | struct nfs4_state_owner *sp = state->owner; |
2171 | struct rpc_task *task; | |
5138fde0 TM |
2172 | struct rpc_message msg = { |
2173 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2174 | .rpc_cred = state->owner->so_cred, | |
2175 | }; | |
c970aa85 TM |
2176 | struct rpc_task_setup task_setup_data = { |
2177 | .rpc_client = server->client, | |
5138fde0 | 2178 | .rpc_message = &msg, |
c970aa85 | 2179 | .callback_ops = &nfs4_close_ops, |
101070ca | 2180 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2181 | .flags = RPC_TASK_ASYNC, |
2182 | }; | |
9512135d | 2183 | int status = -ENOMEM; |
1da177e4 | 2184 | |
8535b2be | 2185 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2186 | if (calldata == NULL) |
9512135d | 2187 | goto out; |
9d12b216 | 2188 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2189 | calldata->inode = state->inode; |
1da177e4 | 2190 | calldata->state = state; |
4a35bd41 | 2191 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2192 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2193 | /* Serialization for the sequence id */ |
8535b2be | 2194 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2195 | if (calldata->arg.seqid == NULL) |
2196 | goto out_free_calldata; | |
dc0b027d | 2197 | calldata->arg.fmode = 0; |
a65318bf | 2198 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2199 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2200 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2201 | calldata->res.server = server; |
f7e8917a | 2202 | calldata->roc = roc; |
643168c2 | 2203 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2204 | |
1174dd1f TM |
2205 | msg.rpc_argp = &calldata->arg; |
2206 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2207 | task_setup_data.callback_data = calldata; |
2208 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2209 | if (IS_ERR(task)) |
2210 | return PTR_ERR(task); | |
a49c3c77 TM |
2211 | status = 0; |
2212 | if (wait) | |
2213 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2214 | rpc_put_task(task); |
a49c3c77 | 2215 | return status; |
9512135d TM |
2216 | out_free_calldata: |
2217 | kfree(calldata); | |
2218 | out: | |
f7e8917a FI |
2219 | if (roc) |
2220 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2221 | nfs4_put_open_state(state); |
2222 | nfs4_put_state_owner(sp); | |
9512135d | 2223 | return status; |
1da177e4 LT |
2224 | } |
2225 | ||
2b484297 | 2226 | static struct inode * |
cd9a1c0e | 2227 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2228 | { |
1da177e4 | 2229 | struct nfs4_state *state; |
1da177e4 | 2230 | |
565277f6 | 2231 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2232 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2233 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2234 | if (IS_ERR(state)) |
2235 | return ERR_CAST(state); | |
cd9a1c0e | 2236 | ctx->state = state; |
f46e0bd3 | 2237 | return igrab(state->inode); |
1da177e4 LT |
2238 | } |
2239 | ||
1185a552 | 2240 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2241 | { |
2242 | if (ctx->state == NULL) | |
2243 | return; | |
2244 | if (is_sync) | |
643168c2 | 2245 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2246 | else |
643168c2 | 2247 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2248 | } |
1da177e4 LT |
2249 | |
2250 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2251 | { | |
43652ad5 BH |
2252 | struct nfs4_server_caps_arg args = { |
2253 | .fhandle = fhandle, | |
2254 | }; | |
1da177e4 LT |
2255 | struct nfs4_server_caps_res res = {}; |
2256 | struct rpc_message msg = { | |
2257 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2258 | .rpc_argp = &args, |
1da177e4 LT |
2259 | .rpc_resp = &res, |
2260 | }; | |
2261 | int status; | |
2262 | ||
7c513058 | 2263 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2264 | if (status == 0) { |
2265 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2266 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2267 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2268 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2269 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2270 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2271 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2272 | server->caps |= NFS_CAP_ACLS; | |
2273 | if (res.has_links != 0) | |
2274 | server->caps |= NFS_CAP_HARDLINKS; | |
2275 | if (res.has_symlinks != 0) | |
2276 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2277 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2278 | server->caps |= NFS_CAP_FILEID; | |
2279 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2280 | server->caps |= NFS_CAP_MODE; | |
2281 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2282 | server->caps |= NFS_CAP_NLINK; | |
2283 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2284 | server->caps |= NFS_CAP_OWNER; | |
2285 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2286 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2287 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2288 | server->caps |= NFS_CAP_ATIME; | |
2289 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2290 | server->caps |= NFS_CAP_CTIME; | |
2291 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2292 | server->caps |= NFS_CAP_MTIME; | |
2293 | ||
a65318bf TM |
2294 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2295 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2296 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2297 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2298 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2299 | } |
cccef3b9 | 2300 | |
1da177e4 LT |
2301 | return status; |
2302 | } | |
2303 | ||
55a97593 | 2304 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2305 | { |
2306 | struct nfs4_exception exception = { }; | |
2307 | int err; | |
2308 | do { | |
2309 | err = nfs4_handle_exception(server, | |
2310 | _nfs4_server_capabilities(server, fhandle), | |
2311 | &exception); | |
2312 | } while (exception.retry); | |
2313 | return err; | |
2314 | } | |
2315 | ||
2316 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2317 | struct nfs_fsinfo *info) | |
2318 | { | |
1da177e4 LT |
2319 | struct nfs4_lookup_root_arg args = { |
2320 | .bitmask = nfs4_fattr_bitmap, | |
2321 | }; | |
2322 | struct nfs4_lookup_res res = { | |
2323 | .server = server, | |
0e574af1 | 2324 | .fattr = info->fattr, |
1da177e4 LT |
2325 | .fh = fhandle, |
2326 | }; | |
2327 | struct rpc_message msg = { | |
2328 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2329 | .rpc_argp = &args, | |
2330 | .rpc_resp = &res, | |
2331 | }; | |
008f55d0 | 2332 | |
0e574af1 | 2333 | nfs_fattr_init(info->fattr); |
7c513058 | 2334 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2335 | } |
2336 | ||
2337 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2338 | struct nfs_fsinfo *info) | |
2339 | { | |
2340 | struct nfs4_exception exception = { }; | |
2341 | int err; | |
2342 | do { | |
fb8a5ba8 BS |
2343 | err = _nfs4_lookup_root(server, fhandle, info); |
2344 | switch (err) { | |
2345 | case 0: | |
2346 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2347 | goto out; |
fb8a5ba8 BS |
2348 | default: |
2349 | err = nfs4_handle_exception(server, err, &exception); | |
2350 | } | |
1da177e4 | 2351 | } while (exception.retry); |
05e9cfb4 | 2352 | out: |
1da177e4 LT |
2353 | return err; |
2354 | } | |
2355 | ||
8f70e95f BS |
2356 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2357 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2358 | { | |
2359 | struct rpc_auth *auth; | |
2360 | int ret; | |
2361 | ||
2362 | auth = rpcauth_create(flavor, server->client); | |
2363 | if (!auth) { | |
2364 | ret = -EIO; | |
2365 | goto out; | |
2366 | } | |
2367 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2368 | out: |
2369 | return ret; | |
2370 | } | |
2371 | ||
801a16dc | 2372 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2373 | struct nfs_fsinfo *info) |
1da177e4 | 2374 | { |
8f70e95f | 2375 | int i, len, status = 0; |
0fabee24 | 2376 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2377 | |
801a16dc BS |
2378 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2379 | flav_array[len] = RPC_AUTH_NULL; | |
2380 | len += 1; | |
8f70e95f BS |
2381 | |
2382 | for (i = 0; i < len; i++) { | |
2383 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2384 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2385 | continue; |
2386 | break; | |
8f70e95f | 2387 | } |
fb8a5ba8 BS |
2388 | /* |
2389 | * -EACCESS could mean that the user doesn't have correct permissions | |
2390 | * to access the mount. It could also mean that we tried to mount | |
2391 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2392 | * existing mount programs don't handle -EACCES very well so it should | |
2393 | * be mapped to -EPERM instead. | |
2394 | */ | |
2395 | if (status == -EACCES) | |
2396 | status = -EPERM; | |
801a16dc BS |
2397 | return status; |
2398 | } | |
2399 | ||
2400 | /* | |
2401 | * get the file handle for the "/" directory on the server | |
2402 | */ | |
3028eb2b BS |
2403 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2404 | struct nfs_fsinfo *info) | |
801a16dc | 2405 | { |
fca78d6d | 2406 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2407 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2408 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2409 | /* | |
2410 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2411 | * by nfs4_map_errors() as this function exits. | |
2412 | */ | |
fca78d6d | 2413 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2414 | if (status == 0) |
2415 | status = nfs4_server_capabilities(server, fhandle); | |
2416 | if (status == 0) | |
2417 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2418 | return nfs4_map_errors(status); |
1da177e4 LT |
2419 | } |
2420 | ||
bae36241 BS |
2421 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2422 | struct nfs_fsinfo *info) | |
2423 | { | |
2424 | int error; | |
2425 | struct nfs_fattr *fattr = info->fattr; | |
2426 | ||
2427 | error = nfs4_server_capabilities(server, mntfh); | |
2428 | if (error < 0) { | |
2429 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2430 | return error; | |
2431 | } | |
2432 | ||
2433 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2434 | if (error < 0) { | |
2435 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2436 | return error; | |
2437 | } | |
2438 | ||
2439 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2440 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2441 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2442 | ||
2443 | return error; | |
2444 | } | |
2445 | ||
6b97fd3d MN |
2446 | /* |
2447 | * Get locations and (maybe) other attributes of a referral. | |
2448 | * Note that we'll actually follow the referral later when | |
2449 | * we detect fsid mismatch in inode revalidation | |
2450 | */ | |
f05d147f BS |
2451 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2452 | const struct qstr *name, struct nfs_fattr *fattr, | |
2453 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2454 | { |
2455 | int status = -ENOMEM; | |
2456 | struct page *page = NULL; | |
2457 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2458 | |
2459 | page = alloc_page(GFP_KERNEL); | |
2460 | if (page == NULL) | |
2461 | goto out; | |
2462 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2463 | if (locations == NULL) | |
2464 | goto out; | |
2465 | ||
f05d147f | 2466 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2467 | if (status != 0) |
2468 | goto out; | |
2469 | /* Make sure server returned a different fsid for the referral */ | |
2470 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2471 | dprintk("%s: server did not return a different fsid for" |
2472 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2473 | status = -EIO; |
2474 | goto out; | |
2475 | } | |
533eb461 AA |
2476 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2477 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2478 | |
533eb461 | 2479 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2480 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2481 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2482 | out: | |
2483 | if (page) | |
2484 | __free_page(page); | |
5d7ca35a | 2485 | kfree(locations); |
6b97fd3d MN |
2486 | return status; |
2487 | } | |
2488 | ||
1da177e4 LT |
2489 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2490 | { | |
2491 | struct nfs4_getattr_arg args = { | |
2492 | .fh = fhandle, | |
2493 | .bitmask = server->attr_bitmask, | |
2494 | }; | |
2495 | struct nfs4_getattr_res res = { | |
2496 | .fattr = fattr, | |
2497 | .server = server, | |
2498 | }; | |
2499 | struct rpc_message msg = { | |
2500 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2501 | .rpc_argp = &args, | |
2502 | .rpc_resp = &res, | |
2503 | }; | |
2504 | ||
0e574af1 | 2505 | nfs_fattr_init(fattr); |
7c513058 | 2506 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2507 | } |
2508 | ||
2509 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2510 | { | |
2511 | struct nfs4_exception exception = { }; | |
2512 | int err; | |
2513 | do { | |
2514 | err = nfs4_handle_exception(server, | |
2515 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2516 | &exception); | |
2517 | } while (exception.retry); | |
2518 | return err; | |
2519 | } | |
2520 | ||
2521 | /* | |
2522 | * The file is not closed if it is opened due to the a request to change | |
2523 | * the size of the file. The open call will not be needed once the | |
2524 | * VFS layer lookup-intents are implemented. | |
2525 | * | |
2526 | * Close is called when the inode is destroyed. | |
2527 | * If we haven't opened the file for O_WRONLY, we | |
2528 | * need to in the size_change case to obtain a stateid. | |
2529 | * | |
2530 | * Got race? | |
2531 | * Because OPEN is always done by name in nfsv4, it is | |
2532 | * possible that we opened a different file by the same | |
2533 | * name. We can recognize this race condition, but we | |
2534 | * can't do anything about it besides returning an error. | |
2535 | * | |
2536 | * This will be fixed with VFS changes (lookup-intent). | |
2537 | */ | |
2538 | static int | |
2539 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2540 | struct iattr *sattr) | |
2541 | { | |
08e9eac4 | 2542 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2543 | struct rpc_cred *cred = NULL; |
d530838b | 2544 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2545 | int status; |
2546 | ||
8a1636c4 BH |
2547 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2548 | pnfs_return_layout(inode); | |
2549 | ||
0e574af1 | 2550 | nfs_fattr_init(fattr); |
1da177e4 | 2551 | |
2669940d AA |
2552 | /* Deal with open(O_TRUNC) */ |
2553 | if (sattr->ia_valid & ATTR_OPEN) | |
2554 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2555 | ||
2556 | /* Optimization: if the end result is no change, don't RPC */ | |
2557 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2558 | return 0; | |
2559 | ||
d530838b | 2560 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2561 | if (sattr->ia_valid & ATTR_FILE) { |
2562 | struct nfs_open_context *ctx; | |
2563 | ||
2564 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2565 | if (ctx) { |
2566 | cred = ctx->cred; | |
2567 | state = ctx->state; | |
2568 | } | |
659bfcd6 | 2569 | } |
08e9eac4 | 2570 | |
659bfcd6 | 2571 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2572 | if (status == 0) |
2573 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2574 | return status; |
2575 | } | |
2576 | ||
0c2e53f1 TM |
2577 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2578 | const struct qstr *name, struct nfs_fh *fhandle, | |
2579 | struct nfs_fattr *fattr) | |
2b3de441 | 2580 | { |
0c2e53f1 | 2581 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2582 | int status; |
2583 | struct nfs4_lookup_arg args = { | |
2584 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2585 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2586 | .name = name, |
2587 | }; | |
2588 | struct nfs4_lookup_res res = { | |
2589 | .server = server, | |
2590 | .fattr = fattr, | |
2591 | .fh = fhandle, | |
2592 | }; | |
2593 | struct rpc_message msg = { | |
2594 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2595 | .rpc_argp = &args, | |
2596 | .rpc_resp = &res, | |
2597 | }; | |
2598 | ||
2599 | nfs_fattr_init(fattr); | |
2600 | ||
1da177e4 | 2601 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2602 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2603 | dprintk("NFS reply lookup: %d\n", status); |
2604 | return status; | |
2605 | } | |
2606 | ||
72de53ec | 2607 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2608 | { |
7ebb9315 | 2609 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2610 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2611 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2612 | fattr->nlink = 2; | |
2613 | } | |
2614 | ||
72de53ec BS |
2615 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2616 | struct qstr *name, struct nfs_fh *fhandle, | |
2617 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2618 | { |
2619 | struct nfs4_exception exception = { }; | |
72de53ec | 2620 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2621 | int err; |
2622 | do { | |
72de53ec BS |
2623 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2624 | switch (err) { | |
08ef7bd3 | 2625 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2626 | err = -ENOENT; |
2627 | goto out; | |
0c2e53f1 | 2628 | case -NFS4ERR_MOVED: |
f05d147f | 2629 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2630 | goto out; |
0c2e53f1 | 2631 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2632 | err = -EPERM; |
2633 | if (client != *clnt) | |
2634 | goto out; | |
2635 | ||
2636 | client = nfs4_create_sec_client(client, dir, name); | |
2637 | if (IS_ERR(client)) | |
2638 | return PTR_ERR(client); | |
2639 | ||
2640 | exception.retry = 1; | |
2641 | break; | |
2642 | default: | |
2643 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2644 | } |
1da177e4 | 2645 | } while (exception.retry); |
72de53ec BS |
2646 | |
2647 | out: | |
2648 | if (err == 0) | |
2649 | *clnt = client; | |
2650 | else if (client != *clnt) | |
2651 | rpc_shutdown_client(client); | |
2652 | ||
1da177e4 LT |
2653 | return err; |
2654 | } | |
2655 | ||
80a16b21 | 2656 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2657 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2658 | { | |
2659 | int status; | |
2660 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2661 | ||
2662 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2663 | if (client != NFS_CLIENT(dir)) { | |
2664 | rpc_shutdown_client(client); | |
2665 | nfs_fixup_secinfo_attributes(fattr); | |
2666 | } | |
2667 | return status; | |
2668 | } | |
2669 | ||
f05d147f BS |
2670 | struct rpc_clnt * |
2671 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2672 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2673 | { | |
2674 | int status; | |
2675 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2676 | ||
2677 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2678 | if (status < 0) { | |
2679 | rpc_shutdown_client(client); | |
2680 | return ERR_PTR(status); | |
2681 | } | |
2682 | return client; | |
2683 | } | |
2684 | ||
1da177e4 LT |
2685 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2686 | { | |
76b32999 | 2687 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2688 | struct nfs4_accessargs args = { |
2689 | .fh = NFS_FH(inode), | |
a4980e78 | 2690 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2691 | }; |
2692 | struct nfs4_accessres res = { | |
2693 | .server = server, | |
1da177e4 | 2694 | }; |
1da177e4 LT |
2695 | struct rpc_message msg = { |
2696 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2697 | .rpc_argp = &args, | |
2698 | .rpc_resp = &res, | |
2699 | .rpc_cred = entry->cred, | |
2700 | }; | |
2701 | int mode = entry->mask; | |
2702 | int status; | |
2703 | ||
2704 | /* | |
2705 | * Determine which access bits we want to ask for... | |
2706 | */ | |
2707 | if (mode & MAY_READ) | |
2708 | args.access |= NFS4_ACCESS_READ; | |
2709 | if (S_ISDIR(inode->i_mode)) { | |
2710 | if (mode & MAY_WRITE) | |
2711 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2712 | if (mode & MAY_EXEC) | |
2713 | args.access |= NFS4_ACCESS_LOOKUP; | |
2714 | } else { | |
2715 | if (mode & MAY_WRITE) | |
2716 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2717 | if (mode & MAY_EXEC) | |
2718 | args.access |= NFS4_ACCESS_EXECUTE; | |
2719 | } | |
c407d41a TM |
2720 | |
2721 | res.fattr = nfs_alloc_fattr(); | |
2722 | if (res.fattr == NULL) | |
2723 | return -ENOMEM; | |
2724 | ||
7c513058 | 2725 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2726 | if (!status) { |
2727 | entry->mask = 0; | |
2728 | if (res.access & NFS4_ACCESS_READ) | |
2729 | entry->mask |= MAY_READ; | |
2730 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2731 | entry->mask |= MAY_WRITE; | |
2732 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2733 | entry->mask |= MAY_EXEC; | |
c407d41a | 2734 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2735 | } |
c407d41a | 2736 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2737 | return status; |
2738 | } | |
2739 | ||
2740 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2741 | { | |
2742 | struct nfs4_exception exception = { }; | |
2743 | int err; | |
2744 | do { | |
2745 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2746 | _nfs4_proc_access(inode, entry), | |
2747 | &exception); | |
2748 | } while (exception.retry); | |
2749 | return err; | |
2750 | } | |
2751 | ||
2752 | /* | |
2753 | * TODO: For the time being, we don't try to get any attributes | |
2754 | * along with any of the zero-copy operations READ, READDIR, | |
2755 | * READLINK, WRITE. | |
2756 | * | |
2757 | * In the case of the first three, we want to put the GETATTR | |
2758 | * after the read-type operation -- this is because it is hard | |
2759 | * to predict the length of a GETATTR response in v4, and thus | |
2760 | * align the READ data correctly. This means that the GETATTR | |
2761 | * may end up partially falling into the page cache, and we should | |
2762 | * shift it into the 'tail' of the xdr_buf before processing. | |
2763 | * To do this efficiently, we need to know the total length | |
2764 | * of data received, which doesn't seem to be available outside | |
2765 | * of the RPC layer. | |
2766 | * | |
2767 | * In the case of WRITE, we also want to put the GETATTR after | |
2768 | * the operation -- in this case because we want to make sure | |
140150db | 2769 | * we get the post-operation mtime and size. |
1da177e4 LT |
2770 | * |
2771 | * Both of these changes to the XDR layer would in fact be quite | |
2772 | * minor, but I decided to leave them for a subsequent patch. | |
2773 | */ | |
2774 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2775 | unsigned int pgbase, unsigned int pglen) | |
2776 | { | |
2777 | struct nfs4_readlink args = { | |
2778 | .fh = NFS_FH(inode), | |
2779 | .pgbase = pgbase, | |
2780 | .pglen = pglen, | |
2781 | .pages = &page, | |
2782 | }; | |
f50c7000 | 2783 | struct nfs4_readlink_res res; |
1da177e4 LT |
2784 | struct rpc_message msg = { |
2785 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2786 | .rpc_argp = &args, | |
f50c7000 | 2787 | .rpc_resp = &res, |
1da177e4 LT |
2788 | }; |
2789 | ||
7c513058 | 2790 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2791 | } |
2792 | ||
2793 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2794 | unsigned int pgbase, unsigned int pglen) | |
2795 | { | |
2796 | struct nfs4_exception exception = { }; | |
2797 | int err; | |
2798 | do { | |
2799 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2800 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2801 | &exception); | |
2802 | } while (exception.retry); | |
2803 | return err; | |
2804 | } | |
2805 | ||
1da177e4 LT |
2806 | /* |
2807 | * Got race? | |
2808 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2809 | * Until then, this create/open method is prone to inefficiency and race | |
2810 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2811 | * placed on the wire. | |
2812 | * | |
2813 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2814 | * The file will be opened again in the subsequent VFS open call | |
2815 | * (nfs4_proc_file_open). | |
2816 | * | |
2817 | * The open for read will just hang around to be used by any process that | |
2818 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2819 | */ | |
2820 | ||
2821 | static int | |
2822 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2823 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2824 | { |
82a2c1b7 | 2825 | struct dentry *de = dentry; |
1da177e4 | 2826 | struct nfs4_state *state; |
c0204fd2 | 2827 | struct rpc_cred *cred = NULL; |
6e5b587d | 2828 | struct nfs4_threshold **thp = NULL; |
c0204fd2 | 2829 | fmode_t fmode = 0; |
1da177e4 LT |
2830 | int status = 0; |
2831 | ||
c0204fd2 TM |
2832 | if (ctx != NULL) { |
2833 | cred = ctx->cred; | |
3d4ff43d | 2834 | de = ctx->dentry; |
c0204fd2 | 2835 | fmode = ctx->mode; |
6e5b587d | 2836 | thp = &ctx->mdsthreshold; |
1da177e4 | 2837 | } |
a8a5da99 | 2838 | sattr->ia_mode &= ~current_umask(); |
6e5b587d | 2839 | state = nfs4_do_open(dir, de, fmode, flags, sattr, cred, thp); |
d4d9cdcb | 2840 | d_drop(dentry); |
1da177e4 LT |
2841 | if (IS_ERR(state)) { |
2842 | status = PTR_ERR(state); | |
c0204fd2 | 2843 | goto out; |
1da177e4 | 2844 | } |
d4d9cdcb | 2845 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2846 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2847 | if (ctx != NULL) |
2848 | ctx->state = state; | |
02a913a7 | 2849 | else |
643168c2 | 2850 | nfs4_close_sync(state, fmode); |
1da177e4 LT |
2851 | out: |
2852 | return status; | |
2853 | } | |
2854 | ||
2855 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2856 | { | |
16e42959 | 2857 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2858 | struct nfs_removeargs args = { |
1da177e4 | 2859 | .fh = NFS_FH(dir), |
26fe5750 | 2860 | .name = *name, |
16e42959 | 2861 | }; |
4fdc17b2 | 2862 | struct nfs_removeres res = { |
16e42959 | 2863 | .server = server, |
1da177e4 | 2864 | }; |
1da177e4 | 2865 | struct rpc_message msg = { |
4fdc17b2 TM |
2866 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2867 | .rpc_argp = &args, | |
2868 | .rpc_resp = &res, | |
1da177e4 | 2869 | }; |
778d2817 | 2870 | int status; |
1da177e4 | 2871 | |
7c513058 | 2872 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 2873 | if (status == 0) |
16e42959 | 2874 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
2875 | return status; |
2876 | } | |
2877 | ||
2878 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2879 | { | |
2880 | struct nfs4_exception exception = { }; | |
2881 | int err; | |
2882 | do { | |
2883 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2884 | _nfs4_proc_remove(dir, name), | |
2885 | &exception); | |
2886 | } while (exception.retry); | |
2887 | return err; | |
2888 | } | |
2889 | ||
e4eff1a6 | 2890 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2891 | { |
e4eff1a6 TM |
2892 | struct nfs_server *server = NFS_SERVER(dir); |
2893 | struct nfs_removeargs *args = msg->rpc_argp; | |
2894 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2895 | |
e4eff1a6 | 2896 | res->server = server; |
1da177e4 | 2897 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2898 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2899 | } |
2900 | ||
34e137cc BS |
2901 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
2902 | { | |
2903 | if (nfs4_setup_sequence(NFS_SERVER(data->dir), | |
2904 | &data->args.seq_args, | |
2905 | &data->res.seq_res, | |
2906 | task)) | |
2907 | return; | |
2908 | rpc_call_start(task); | |
1da177e4 LT |
2909 | } |
2910 | ||
e4eff1a6 | 2911 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2912 | { |
e4eff1a6 TM |
2913 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2914 | ||
14516c3a TM |
2915 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2916 | return 0; | |
9e33bed5 | 2917 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2918 | return 0; |
2919 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 2920 | return 1; |
1da177e4 LT |
2921 | } |
2922 | ||
d3d4152a JL |
2923 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2924 | { | |
2925 | struct nfs_server *server = NFS_SERVER(dir); | |
2926 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2927 | struct nfs_renameres *res = msg->rpc_resp; | |
2928 | ||
2929 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 2930 | res->server = server; |
9d12b216 | 2931 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
2932 | } |
2933 | ||
c6bfa1a1 BS |
2934 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
2935 | { | |
2936 | if (nfs4_setup_sequence(NFS_SERVER(data->old_dir), | |
2937 | &data->args.seq_args, | |
2938 | &data->res.seq_res, | |
2939 | task)) | |
2940 | return; | |
2941 | rpc_call_start(task); | |
d3d4152a JL |
2942 | } |
2943 | ||
2944 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2945 | struct inode *new_dir) | |
2946 | { | |
2947 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2948 | ||
2949 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2950 | return 0; | |
2951 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2952 | return 0; | |
2953 | ||
2954 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 2955 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
2956 | return 1; |
2957 | } | |
2958 | ||
1da177e4 LT |
2959 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2960 | struct inode *new_dir, struct qstr *new_name) | |
2961 | { | |
6caf2c82 | 2962 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2963 | struct nfs_renameargs arg = { |
1da177e4 LT |
2964 | .old_dir = NFS_FH(old_dir), |
2965 | .new_dir = NFS_FH(new_dir), | |
2966 | .old_name = old_name, | |
2967 | .new_name = new_name, | |
6caf2c82 | 2968 | }; |
e8582a8b | 2969 | struct nfs_renameres res = { |
6caf2c82 | 2970 | .server = server, |
1da177e4 | 2971 | }; |
1da177e4 LT |
2972 | struct rpc_message msg = { |
2973 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2974 | .rpc_argp = &arg, | |
2975 | .rpc_resp = &res, | |
2976 | }; | |
011fff72 | 2977 | int status = -ENOMEM; |
1da177e4 | 2978 | |
7c513058 | 2979 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2980 | if (!status) { |
2981 | update_changeattr(old_dir, &res.old_cinfo); | |
2982 | update_changeattr(new_dir, &res.new_cinfo); | |
2983 | } | |
2984 | return status; | |
2985 | } | |
2986 | ||
2987 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2988 | struct inode *new_dir, struct qstr *new_name) | |
2989 | { | |
2990 | struct nfs4_exception exception = { }; | |
2991 | int err; | |
2992 | do { | |
2993 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2994 | _nfs4_proc_rename(old_dir, old_name, | |
2995 | new_dir, new_name), | |
2996 | &exception); | |
2997 | } while (exception.retry); | |
2998 | return err; | |
2999 | } | |
3000 | ||
3001 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3002 | { | |
91ba2eee | 3003 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3004 | struct nfs4_link_arg arg = { |
3005 | .fh = NFS_FH(inode), | |
3006 | .dir_fh = NFS_FH(dir), | |
3007 | .name = name, | |
91ba2eee TM |
3008 | .bitmask = server->attr_bitmask, |
3009 | }; | |
91ba2eee TM |
3010 | struct nfs4_link_res res = { |
3011 | .server = server, | |
1da177e4 | 3012 | }; |
1da177e4 LT |
3013 | struct rpc_message msg = { |
3014 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3015 | .rpc_argp = &arg, | |
91ba2eee | 3016 | .rpc_resp = &res, |
1da177e4 | 3017 | }; |
136f2627 TM |
3018 | int status = -ENOMEM; |
3019 | ||
3020 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3021 | if (res.fattr == NULL) |
136f2627 | 3022 | goto out; |
1da177e4 | 3023 | |
7c513058 | 3024 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3025 | if (!status) { |
3026 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3027 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3028 | } |
136f2627 | 3029 | out: |
136f2627 | 3030 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3031 | return status; |
3032 | } | |
3033 | ||
3034 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3035 | { | |
3036 | struct nfs4_exception exception = { }; | |
3037 | int err; | |
3038 | do { | |
3039 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3040 | _nfs4_proc_link(inode, dir, name), | |
3041 | &exception); | |
3042 | } while (exception.retry); | |
3043 | return err; | |
3044 | } | |
3045 | ||
57dc9a57 TM |
3046 | struct nfs4_createdata { |
3047 | struct rpc_message msg; | |
3048 | struct nfs4_create_arg arg; | |
3049 | struct nfs4_create_res res; | |
3050 | struct nfs_fh fh; | |
3051 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3052 | }; |
3053 | ||
3054 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3055 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3056 | { | |
3057 | struct nfs4_createdata *data; | |
3058 | ||
3059 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3060 | if (data != NULL) { | |
3061 | struct nfs_server *server = NFS_SERVER(dir); | |
3062 | ||
3063 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3064 | data->msg.rpc_argp = &data->arg; | |
3065 | data->msg.rpc_resp = &data->res; | |
3066 | data->arg.dir_fh = NFS_FH(dir); | |
3067 | data->arg.server = server; | |
3068 | data->arg.name = name; | |
3069 | data->arg.attrs = sattr; | |
3070 | data->arg.ftype = ftype; | |
3071 | data->arg.bitmask = server->attr_bitmask; | |
3072 | data->res.server = server; | |
3073 | data->res.fh = &data->fh; | |
3074 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3075 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3076 | } |
3077 | return data; | |
3078 | } | |
3079 | ||
3080 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3081 | { | |
7c513058 | 3082 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3083 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3084 | if (status == 0) { |
3085 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3086 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3087 | } | |
3088 | return status; | |
3089 | } | |
3090 | ||
3091 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3092 | { | |
3093 | kfree(data); | |
3094 | } | |
3095 | ||
4f390c15 | 3096 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3097 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3098 | { |
57dc9a57 TM |
3099 | struct nfs4_createdata *data; |
3100 | int status = -ENAMETOOLONG; | |
1da177e4 | 3101 | |
94a6d753 | 3102 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3103 | goto out; |
4f390c15 | 3104 | |
57dc9a57 TM |
3105 | status = -ENOMEM; |
3106 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3107 | if (data == NULL) | |
3108 | goto out; | |
3109 | ||
3110 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3111 | data->arg.u.symlink.pages = &page; | |
3112 | data->arg.u.symlink.len = len; | |
1da177e4 | 3113 | |
57dc9a57 TM |
3114 | status = nfs4_do_create(dir, dentry, data); |
3115 | ||
3116 | nfs4_free_createdata(data); | |
3117 | out: | |
1da177e4 LT |
3118 | return status; |
3119 | } | |
3120 | ||
4f390c15 | 3121 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3122 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3123 | { |
3124 | struct nfs4_exception exception = { }; | |
3125 | int err; | |
3126 | do { | |
3127 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3128 | _nfs4_proc_symlink(dir, dentry, page, |
3129 | len, sattr), | |
1da177e4 LT |
3130 | &exception); |
3131 | } while (exception.retry); | |
3132 | return err; | |
3133 | } | |
3134 | ||
3135 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3136 | struct iattr *sattr) | |
3137 | { | |
57dc9a57 TM |
3138 | struct nfs4_createdata *data; |
3139 | int status = -ENOMEM; | |
1da177e4 | 3140 | |
57dc9a57 TM |
3141 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3142 | if (data == NULL) | |
3143 | goto out; | |
3144 | ||
3145 | status = nfs4_do_create(dir, dentry, data); | |
3146 | ||
3147 | nfs4_free_createdata(data); | |
3148 | out: | |
1da177e4 LT |
3149 | return status; |
3150 | } | |
3151 | ||
3152 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3153 | struct iattr *sattr) | |
3154 | { | |
3155 | struct nfs4_exception exception = { }; | |
3156 | int err; | |
a8a5da99 AK |
3157 | |
3158 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3159 | do { |
3160 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3161 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3162 | &exception); | |
3163 | } while (exception.retry); | |
3164 | return err; | |
3165 | } | |
3166 | ||
3167 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3168 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3169 | { |
3170 | struct inode *dir = dentry->d_inode; | |
3171 | struct nfs4_readdir_arg args = { | |
3172 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3173 | .pages = pages, |
1da177e4 LT |
3174 | .pgbase = 0, |
3175 | .count = count, | |
96d25e53 | 3176 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3177 | .plus = plus, |
1da177e4 LT |
3178 | }; |
3179 | struct nfs4_readdir_res res; | |
3180 | struct rpc_message msg = { | |
3181 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3182 | .rpc_argp = &args, | |
3183 | .rpc_resp = &res, | |
3184 | .rpc_cred = cred, | |
3185 | }; | |
3186 | int status; | |
3187 | ||
3110ff80 | 3188 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3189 | dentry->d_parent->d_name.name, |
3190 | dentry->d_name.name, | |
3191 | (unsigned long long)cookie); | |
1da177e4 LT |
3192 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3193 | res.pgbase = args.pgbase; | |
7c513058 | 3194 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3195 | if (status >= 0) { |
1da177e4 | 3196 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3197 | status += args.pgbase; |
3198 | } | |
c4812998 TM |
3199 | |
3200 | nfs_invalidate_atime(dir); | |
3201 | ||
3110ff80 | 3202 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3203 | return status; |
3204 | } | |
3205 | ||
3206 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3207 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3208 | { |
3209 | struct nfs4_exception exception = { }; | |
3210 | int err; | |
3211 | do { | |
3212 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3213 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3214 | pages, count, plus), |
1da177e4 LT |
3215 | &exception); |
3216 | } while (exception.retry); | |
3217 | return err; | |
3218 | } | |
3219 | ||
3220 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3221 | struct iattr *sattr, dev_t rdev) | |
3222 | { | |
57dc9a57 TM |
3223 | struct nfs4_createdata *data; |
3224 | int mode = sattr->ia_mode; | |
3225 | int status = -ENOMEM; | |
1da177e4 LT |
3226 | |
3227 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3228 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3229 | |
3230 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3231 | if (data == NULL) | |
3232 | goto out; | |
3233 | ||
1da177e4 | 3234 | if (S_ISFIFO(mode)) |
57dc9a57 | 3235 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3236 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3237 | data->arg.ftype = NF4BLK; |
3238 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3239 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3240 | } |
3241 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3242 | data->arg.ftype = NF4CHR; |
3243 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3244 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3245 | } |
1da177e4 | 3246 | |
57dc9a57 TM |
3247 | status = nfs4_do_create(dir, dentry, data); |
3248 | ||
3249 | nfs4_free_createdata(data); | |
3250 | out: | |
1da177e4 LT |
3251 | return status; |
3252 | } | |
3253 | ||
3254 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3255 | struct iattr *sattr, dev_t rdev) | |
3256 | { | |
3257 | struct nfs4_exception exception = { }; | |
3258 | int err; | |
a8a5da99 AK |
3259 | |
3260 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3261 | do { |
3262 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3263 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3264 | &exception); | |
3265 | } while (exception.retry); | |
3266 | return err; | |
3267 | } | |
3268 | ||
3269 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3270 | struct nfs_fsstat *fsstat) | |
3271 | { | |
3272 | struct nfs4_statfs_arg args = { | |
3273 | .fh = fhandle, | |
3274 | .bitmask = server->attr_bitmask, | |
3275 | }; | |
24ad148a BH |
3276 | struct nfs4_statfs_res res = { |
3277 | .fsstat = fsstat, | |
3278 | }; | |
1da177e4 LT |
3279 | struct rpc_message msg = { |
3280 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3281 | .rpc_argp = &args, | |
24ad148a | 3282 | .rpc_resp = &res, |
1da177e4 LT |
3283 | }; |
3284 | ||
0e574af1 | 3285 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3286 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3287 | } |
3288 | ||
3289 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3290 | { | |
3291 | struct nfs4_exception exception = { }; | |
3292 | int err; | |
3293 | do { | |
3294 | err = nfs4_handle_exception(server, | |
3295 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3296 | &exception); | |
3297 | } while (exception.retry); | |
3298 | return err; | |
3299 | } | |
3300 | ||
3301 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3302 | struct nfs_fsinfo *fsinfo) | |
3303 | { | |
3304 | struct nfs4_fsinfo_arg args = { | |
3305 | .fh = fhandle, | |
3306 | .bitmask = server->attr_bitmask, | |
3307 | }; | |
3dda5e43 BH |
3308 | struct nfs4_fsinfo_res res = { |
3309 | .fsinfo = fsinfo, | |
3310 | }; | |
1da177e4 LT |
3311 | struct rpc_message msg = { |
3312 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3313 | .rpc_argp = &args, | |
3dda5e43 | 3314 | .rpc_resp = &res, |
1da177e4 LT |
3315 | }; |
3316 | ||
7c513058 | 3317 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3318 | } |
3319 | ||
3320 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3321 | { | |
3322 | struct nfs4_exception exception = { }; | |
3323 | int err; | |
3324 | ||
3325 | do { | |
3326 | err = nfs4_handle_exception(server, | |
3327 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3328 | &exception); | |
3329 | } while (exception.retry); | |
3330 | return err; | |
3331 | } | |
3332 | ||
3333 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3334 | { | |
e38eb650 BS |
3335 | int error; |
3336 | ||
0e574af1 | 3337 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 BS |
3338 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
3339 | if (error == 0) | |
3340 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); | |
3341 | ||
3342 | return error; | |
1da177e4 LT |
3343 | } |
3344 | ||
3345 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3346 | struct nfs_pathconf *pathconf) | |
3347 | { | |
3348 | struct nfs4_pathconf_arg args = { | |
3349 | .fh = fhandle, | |
3350 | .bitmask = server->attr_bitmask, | |
3351 | }; | |
d45b2989 BH |
3352 | struct nfs4_pathconf_res res = { |
3353 | .pathconf = pathconf, | |
3354 | }; | |
1da177e4 LT |
3355 | struct rpc_message msg = { |
3356 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3357 | .rpc_argp = &args, | |
d45b2989 | 3358 | .rpc_resp = &res, |
1da177e4 LT |
3359 | }; |
3360 | ||
3361 | /* None of the pathconf attributes are mandatory to implement */ | |
3362 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3363 | memset(pathconf, 0, sizeof(*pathconf)); | |
3364 | return 0; | |
3365 | } | |
3366 | ||
0e574af1 | 3367 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3368 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3369 | } |
3370 | ||
3371 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3372 | struct nfs_pathconf *pathconf) | |
3373 | { | |
3374 | struct nfs4_exception exception = { }; | |
3375 | int err; | |
3376 | ||
3377 | do { | |
3378 | err = nfs4_handle_exception(server, | |
3379 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3380 | &exception); | |
3381 | } while (exception.retry); | |
3382 | return err; | |
3383 | } | |
3384 | ||
d20581aa BH |
3385 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3386 | { | |
cd841605 | 3387 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3388 | } |
3389 | ||
cbdabc7f | 3390 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3391 | { |
cd841605 | 3392 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3393 | |
9e33bed5 | 3394 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3395 | rpc_restart_call_prepare(task); |
ec06c096 | 3396 | return -EAGAIN; |
1da177e4 | 3397 | } |
8850df99 | 3398 | |
d20581aa | 3399 | __nfs4_read_done_cb(data); |
1da177e4 | 3400 | if (task->tk_status > 0) |
ec06c096 TM |
3401 | renew_lease(server, data->timestamp); |
3402 | return 0; | |
1da177e4 LT |
3403 | } |
3404 | ||
cbdabc7f AA |
3405 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3406 | { | |
3407 | ||
3408 | dprintk("--> %s\n", __func__); | |
3409 | ||
3410 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3411 | return -EAGAIN; | |
3412 | ||
d20581aa BH |
3413 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3414 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3415 | } |
3416 | ||
bdc7f021 | 3417 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3418 | { |
1da177e4 | 3419 | data->timestamp = jiffies; |
cbdabc7f | 3420 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3421 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3422 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3423 | } |
3424 | ||
ea7c3303 BS |
3425 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3426 | { | |
cd841605 | 3427 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
ea7c3303 BS |
3428 | &data->args.seq_args, |
3429 | &data->res.seq_res, | |
3430 | task)) | |
3431 | return; | |
3432 | rpc_call_start(task); | |
1da177e4 LT |
3433 | } |
3434 | ||
b029bc9b | 3435 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3436 | { |
cd841605 | 3437 | struct inode *inode = data->header->inode; |
1da177e4 | 3438 | |
9e33bed5 | 3439 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3440 | rpc_restart_call_prepare(task); |
788e7a89 | 3441 | return -EAGAIN; |
1da177e4 | 3442 | } |
4f9838c7 | 3443 | if (task->tk_status >= 0) { |
1da177e4 | 3444 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3445 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3446 | } |
788e7a89 | 3447 | return 0; |
1da177e4 LT |
3448 | } |
3449 | ||
b029bc9b FI |
3450 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3451 | { | |
3452 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3453 | return -EAGAIN; | |
d20581aa BH |
3454 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3455 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3456 | } |
3457 | ||
5a37f851 TM |
3458 | static |
3459 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3460 | { |
5a37f851 TM |
3461 | const struct nfs_pgio_header *hdr = data->header; |
3462 | ||
3463 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3464 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3465 | return false; | |
3466 | /* Otherwise, request attributes if and only if we don't hold | |
3467 | * a delegation | |
3468 | */ | |
011e2a7f | 3469 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3470 | } |
a69aef14 | 3471 | |
bdc7f021 | 3472 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3473 | { |
cd841605 | 3474 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3475 | |
5a37f851 | 3476 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3477 | data->args.bitmask = NULL; |
3478 | data->res.fattr = NULL; | |
3479 | } else | |
3480 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3481 | |
b029bc9b FI |
3482 | if (!data->write_done_cb) |
3483 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3484 | data->res.server = server; |
1da177e4 LT |
3485 | data->timestamp = jiffies; |
3486 | ||
bdc7f021 | 3487 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3488 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3489 | } |
3490 | ||
c6cb80d0 BS |
3491 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3492 | { | |
cd841605 | 3493 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
c6cb80d0 BS |
3494 | &data->args.seq_args, |
3495 | &data->res.seq_res, | |
3496 | task)) | |
3497 | return; | |
3498 | rpc_call_start(task); | |
1da177e4 LT |
3499 | } |
3500 | ||
0b7c0153 | 3501 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 BS |
3502 | { |
3503 | if (nfs4_setup_sequence(NFS_SERVER(data->inode), | |
3504 | &data->args.seq_args, | |
3505 | &data->res.seq_res, | |
3506 | task)) | |
3507 | return; | |
3508 | rpc_call_start(task); | |
1da177e4 LT |
3509 | } |
3510 | ||
0b7c0153 | 3511 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3512 | { |
1da177e4 | 3513 | struct inode *inode = data->inode; |
14516c3a | 3514 | |
9e33bed5 | 3515 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3516 | rpc_restart_call_prepare(task); |
788e7a89 | 3517 | return -EAGAIN; |
1da177e4 | 3518 | } |
788e7a89 | 3519 | return 0; |
1da177e4 LT |
3520 | } |
3521 | ||
0b7c0153 | 3522 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3523 | { |
3524 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3525 | return -EAGAIN; | |
0b7c0153 | 3526 | return data->commit_done_cb(task, data); |
5f452431 FI |
3527 | } |
3528 | ||
0b7c0153 | 3529 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3530 | { |
788e7a89 | 3531 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3532 | |
0b7c0153 FI |
3533 | if (data->commit_done_cb == NULL) |
3534 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3535 | data->res.server = server; |
bdc7f021 | 3536 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3537 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3538 | } |
3539 | ||
9bc4e3ca CL |
3540 | struct nfs4_renewdata { |
3541 | struct nfs_client *client; | |
3542 | unsigned long timestamp; | |
3543 | }; | |
3544 | ||
1da177e4 LT |
3545 | /* |
3546 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3547 | * standalone procedure for queueing an asynchronous RENEW. | |
3548 | */ | |
9bc4e3ca | 3549 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3550 | { |
9bc4e3ca CL |
3551 | struct nfs4_renewdata *data = calldata; |
3552 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3553 | |
0851de06 AB |
3554 | if (atomic_read(&clp->cl_count) > 1) |
3555 | nfs4_schedule_state_renewal(clp); | |
3556 | nfs_put_client(clp); | |
9bc4e3ca | 3557 | kfree(data); |
dc96aef9 AB |
3558 | } |
3559 | ||
9bc4e3ca | 3560 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3561 | { |
9bc4e3ca CL |
3562 | struct nfs4_renewdata *data = calldata; |
3563 | struct nfs_client *clp = data->client; | |
3564 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3565 | |
3566 | if (task->tk_status < 0) { | |
95baa25c | 3567 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3568 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3569 | return; | |
3570 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3571 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3572 | return; |
3573 | } | |
3574 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3575 | } |
452e9352 | 3576 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3577 | } |
3578 | ||
963d8fe5 TM |
3579 | static const struct rpc_call_ops nfs4_renew_ops = { |
3580 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3581 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3582 | }; |
3583 | ||
2f60ea6b | 3584 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3585 | { |
3586 | struct rpc_message msg = { | |
3587 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3588 | .rpc_argp = clp, | |
b4454fe1 | 3589 | .rpc_cred = cred, |
1da177e4 | 3590 | }; |
9bc4e3ca | 3591 | struct nfs4_renewdata *data; |
1da177e4 | 3592 | |
2f60ea6b TM |
3593 | if (renew_flags == 0) |
3594 | return 0; | |
0851de06 AB |
3595 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3596 | return -EIO; | |
b569ad34 | 3597 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3598 | if (data == NULL) |
3599 | return -ENOMEM; | |
3600 | data->client = clp; | |
3601 | data->timestamp = jiffies; | |
1da177e4 | 3602 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3603 | &nfs4_renew_ops, data); |
1da177e4 LT |
3604 | } |
3605 | ||
8534d4ec | 3606 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3607 | { |
3608 | struct rpc_message msg = { | |
3609 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3610 | .rpc_argp = clp, | |
b4454fe1 | 3611 | .rpc_cred = cred, |
1da177e4 LT |
3612 | }; |
3613 | unsigned long now = jiffies; | |
3614 | int status; | |
3615 | ||
3616 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3617 | if (status < 0) | |
3618 | return status; | |
452e9352 | 3619 | do_renew_lease(clp, now); |
1da177e4 LT |
3620 | return 0; |
3621 | } | |
3622 | ||
aa1870af BF |
3623 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3624 | { | |
3625 | return (server->caps & NFS_CAP_ACLS) | |
3626 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3627 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3628 | } | |
3629 | ||
3630 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3631 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3632 | * the stack. | |
3633 | */ | |
3634 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3635 | ||
e9e3d724 NH |
3636 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3637 | struct page **pages, unsigned int *pgbase) | |
3638 | { | |
3639 | struct page *newpage, **spages; | |
3640 | int rc = 0; | |
3641 | size_t len; | |
3642 | spages = pages; | |
3643 | ||
3644 | do { | |
43b7c3f0 | 3645 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3646 | newpage = alloc_page(GFP_KERNEL); |
3647 | ||
3648 | if (newpage == NULL) | |
3649 | goto unwind; | |
3650 | memcpy(page_address(newpage), buf, len); | |
3651 | buf += len; | |
3652 | buflen -= len; | |
3653 | *pages++ = newpage; | |
3654 | rc++; | |
3655 | } while (buflen != 0); | |
3656 | ||
3657 | return rc; | |
3658 | ||
3659 | unwind: | |
3660 | for(; rc > 0; rc--) | |
3661 | __free_page(spages[rc-1]); | |
3662 | return -ENOMEM; | |
3663 | } | |
3664 | ||
e50a1c2e BF |
3665 | struct nfs4_cached_acl { |
3666 | int cached; | |
3667 | size_t len; | |
3e9d4154 | 3668 | char data[0]; |
e50a1c2e BF |
3669 | }; |
3670 | ||
3671 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3672 | { | |
3673 | struct nfs_inode *nfsi = NFS_I(inode); | |
3674 | ||
3675 | spin_lock(&inode->i_lock); | |
3676 | kfree(nfsi->nfs4_acl); | |
3677 | nfsi->nfs4_acl = acl; | |
3678 | spin_unlock(&inode->i_lock); | |
3679 | } | |
3680 | ||
3681 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3682 | { | |
3683 | nfs4_set_cached_acl(inode, NULL); | |
3684 | } | |
3685 | ||
3686 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3687 | { | |
3688 | struct nfs_inode *nfsi = NFS_I(inode); | |
3689 | struct nfs4_cached_acl *acl; | |
3690 | int ret = -ENOENT; | |
3691 | ||
3692 | spin_lock(&inode->i_lock); | |
3693 | acl = nfsi->nfs4_acl; | |
3694 | if (acl == NULL) | |
3695 | goto out; | |
3696 | if (buf == NULL) /* user is just asking for length */ | |
3697 | goto out_len; | |
3698 | if (acl->cached == 0) | |
3699 | goto out; | |
3700 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3701 | if (acl->len > buflen) | |
3702 | goto out; | |
3703 | memcpy(buf, acl->data, acl->len); | |
3704 | out_len: | |
3705 | ret = acl->len; | |
3706 | out: | |
3707 | spin_unlock(&inode->i_lock); | |
3708 | return ret; | |
3709 | } | |
3710 | ||
5794d21e | 3711 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3712 | { |
3713 | struct nfs4_cached_acl *acl; | |
3714 | ||
5794d21e | 3715 | if (pages && acl_len <= PAGE_SIZE) { |
e50a1c2e BF |
3716 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); |
3717 | if (acl == NULL) | |
3718 | goto out; | |
3719 | acl->cached = 1; | |
5794d21e | 3720 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3721 | } else { |
3722 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3723 | if (acl == NULL) | |
3724 | goto out; | |
3725 | acl->cached = 0; | |
3726 | } | |
3727 | acl->len = acl_len; | |
3728 | out: | |
3729 | nfs4_set_cached_acl(inode, acl); | |
3730 | } | |
3731 | ||
bf118a34 AA |
3732 | /* |
3733 | * The getxattr API returns the required buffer length when called with a | |
3734 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3735 | * the required buf. On a NULL buf, we send a page of data to the server | |
3736 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3737 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3738 | * the cache. If not so, we throw away the page, and cache the required | |
3739 | * length. The next getxattr call will then produce another round trip to | |
3740 | * the server, this time with the input buf of the required size. | |
3741 | */ | |
16b4289c | 3742 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3743 | { |
bf118a34 | 3744 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3745 | struct nfs_getaclargs args = { |
3746 | .fh = NFS_FH(inode), | |
3747 | .acl_pages = pages, | |
3748 | .acl_len = buflen, | |
3749 | }; | |
663c79b3 BH |
3750 | struct nfs_getaclres res = { |
3751 | .acl_len = buflen, | |
3752 | }; | |
aa1870af BF |
3753 | struct rpc_message msg = { |
3754 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3755 | .rpc_argp = &args, | |
663c79b3 | 3756 | .rpc_resp = &res, |
aa1870af | 3757 | }; |
bf118a34 | 3758 | int ret = -ENOMEM, npages, i, acl_len = 0; |
aa1870af | 3759 | |
bf118a34 AA |
3760 | npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; |
3761 | /* As long as we're doing a round trip to the server anyway, | |
3762 | * let's be prepared for a page of acl data. */ | |
3763 | if (npages == 0) | |
3764 | npages = 1; | |
3765 | ||
5a006899 SP |
3766 | /* Add an extra page to handle the bitmap returned */ |
3767 | npages++; | |
3768 | ||
bf118a34 AA |
3769 | for (i = 0; i < npages; i++) { |
3770 | pages[i] = alloc_page(GFP_KERNEL); | |
3771 | if (!pages[i]) | |
3772 | goto out_free; | |
e50a1c2e | 3773 | } |
5a006899 SP |
3774 | |
3775 | /* for decoding across pages */ | |
3776 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3777 | if (!res.acl_scratch) | |
3778 | goto out_free; | |
3779 | ||
bf118a34 AA |
3780 | args.acl_len = npages * PAGE_SIZE; |
3781 | args.acl_pgbase = 0; | |
5a006899 | 3782 | |
bf118a34 AA |
3783 | /* Let decode_getfacl know not to fail if the ACL data is larger than |
3784 | * the page we send as a guess */ | |
3785 | if (buf == NULL) | |
3786 | res.acl_flags |= NFS4_ACL_LEN_REQUEST; | |
bf118a34 | 3787 | |
de040bec | 3788 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3789 | __func__, buf, buflen, npages, args.acl_len); |
3790 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3791 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3792 | if (ret) |
3793 | goto out_free; | |
bf118a34 AA |
3794 | |
3795 | acl_len = res.acl_len - res.acl_data_offset; | |
3796 | if (acl_len > args.acl_len) | |
5794d21e | 3797 | nfs4_write_cached_acl(inode, NULL, 0, acl_len); |
e50a1c2e | 3798 | else |
5794d21e | 3799 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, |
bf118a34 | 3800 | acl_len); |
e50a1c2e BF |
3801 | if (buf) { |
3802 | ret = -ERANGE; | |
bf118a34 | 3803 | if (acl_len > buflen) |
e50a1c2e | 3804 | goto out_free; |
bf118a34 | 3805 | _copy_from_pages(buf, pages, res.acl_data_offset, |
20e0fa98 | 3806 | acl_len); |
e50a1c2e | 3807 | } |
bf118a34 | 3808 | ret = acl_len; |
e50a1c2e | 3809 | out_free: |
bf118a34 AA |
3810 | for (i = 0; i < npages; i++) |
3811 | if (pages[i]) | |
3812 | __free_page(pages[i]); | |
331818f1 TM |
3813 | if (res.acl_scratch) |
3814 | __free_page(res.acl_scratch); | |
aa1870af BF |
3815 | return ret; |
3816 | } | |
3817 | ||
16b4289c TM |
3818 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3819 | { | |
3820 | struct nfs4_exception exception = { }; | |
3821 | ssize_t ret; | |
3822 | do { | |
3823 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3824 | if (ret >= 0) | |
3825 | break; | |
3826 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3827 | } while (exception.retry); | |
3828 | return ret; | |
3829 | } | |
3830 | ||
e50a1c2e BF |
3831 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3832 | { | |
3833 | struct nfs_server *server = NFS_SERVER(inode); | |
3834 | int ret; | |
3835 | ||
3836 | if (!nfs4_server_supports_acls(server)) | |
3837 | return -EOPNOTSUPP; | |
3838 | ret = nfs_revalidate_inode(server, inode); | |
3839 | if (ret < 0) | |
3840 | return ret; | |
08a22b39 AK |
3841 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3842 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3843 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3844 | if (ret != -ENOENT) | |
bf118a34 AA |
3845 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3846 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3847 | return ret; |
3848 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3849 | } | |
3850 | ||
16b4289c | 3851 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3852 | { |
3853 | struct nfs_server *server = NFS_SERVER(inode); | |
3854 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3855 | struct nfs_setaclargs arg = { | |
3856 | .fh = NFS_FH(inode), | |
3857 | .acl_pages = pages, | |
3858 | .acl_len = buflen, | |
3859 | }; | |
73c403a9 | 3860 | struct nfs_setaclres res; |
4b580ee3 BF |
3861 | struct rpc_message msg = { |
3862 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3863 | .rpc_argp = &arg, | |
73c403a9 | 3864 | .rpc_resp = &res, |
4b580ee3 | 3865 | }; |
e9e3d724 | 3866 | int ret, i; |
4b580ee3 BF |
3867 | |
3868 | if (!nfs4_server_supports_acls(server)) | |
3869 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3870 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3871 | if (i < 0) | |
3872 | return i; | |
57ec14c5 | 3873 | nfs4_inode_return_delegation(inode); |
7c513058 | 3874 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3875 | |
3876 | /* | |
3877 | * Free each page after tx, so the only ref left is | |
3878 | * held by the network stack | |
3879 | */ | |
3880 | for (; i > 0; i--) | |
3881 | put_page(pages[i-1]); | |
3882 | ||
08a22b39 AK |
3883 | /* |
3884 | * Acl update can result in inode attribute update. | |
3885 | * so mark the attribute cache invalid. | |
3886 | */ | |
3887 | spin_lock(&inode->i_lock); | |
3888 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3889 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3890 | nfs_access_zap_cache(inode); |
3891 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3892 | return ret; |
3893 | } | |
3894 | ||
16b4289c TM |
3895 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3896 | { | |
3897 | struct nfs4_exception exception = { }; | |
3898 | int err; | |
3899 | do { | |
3900 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3901 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3902 | &exception); | |
3903 | } while (exception.retry); | |
3904 | return err; | |
3905 | } | |
3906 | ||
1da177e4 | 3907 | static int |
aa5190d0 | 3908 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3909 | { |
aa5190d0 TM |
3910 | struct nfs_client *clp = server->nfs_client; |
3911 | ||
3912 | if (task->tk_status >= 0) | |
1da177e4 LT |
3913 | return 0; |
3914 | switch(task->tk_status) { | |
a1d0b5ee | 3915 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3916 | case -NFS4ERR_ADMIN_REVOKED: |
3917 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
3918 | if (state == NULL) |
3919 | break; | |
3920 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3921 | case -NFS4ERR_OPENMODE: |
3922 | if (state == NULL) | |
3923 | break; | |
0400a6b0 TM |
3924 | nfs4_schedule_stateid_recovery(server, state); |
3925 | goto wait_on_recovery; | |
0ced63d1 TM |
3926 | case -NFS4ERR_EXPIRED: |
3927 | if (state != NULL) | |
3928 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3929 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3930 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3931 | nfs4_schedule_lease_recovery(clp); |
3932 | goto wait_on_recovery; | |
4745e315 AA |
3933 | #if defined(CONFIG_NFS_V4_1) |
3934 | case -NFS4ERR_BADSESSION: | |
3935 | case -NFS4ERR_BADSLOT: | |
3936 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3937 | case -NFS4ERR_DEADSESSION: | |
3938 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3939 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3940 | case -NFS4ERR_SEQ_MISORDERED: | |
3941 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3942 | task->tk_status); | |
9f594791 | 3943 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
3944 | task->tk_status = 0; |
3945 | return -EAGAIN; | |
3946 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3947 | case -NFS4ERR_DELAY: |
aa5190d0 | 3948 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3949 | case -NFS4ERR_GRACE: |
2c643488 | 3950 | case -EKEYEXPIRED: |
1da177e4 LT |
3951 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3952 | task->tk_status = 0; | |
3953 | return -EAGAIN; | |
a8a4ae3a | 3954 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3955 | case -NFS4ERR_OLD_STATEID: |
3956 | task->tk_status = 0; | |
3957 | return -EAGAIN; | |
3958 | } | |
3959 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3960 | return 0; | |
0400a6b0 | 3961 | wait_on_recovery: |
a2c0b9e2 | 3962 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3963 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3964 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3965 | task->tk_status = 0; | |
3966 | return -EAGAIN; | |
1da177e4 LT |
3967 | } |
3968 | ||
f092075d CL |
3969 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
3970 | nfs4_verifier *bootverf) | |
cd93710e CL |
3971 | { |
3972 | __be32 verf[2]; | |
3973 | ||
2c820d9a CL |
3974 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
3975 | /* An impossible timestamp guarantees this value | |
3976 | * will never match a generated boot time. */ | |
3977 | verf[0] = 0; | |
3978 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
3979 | } else { | |
f092075d CL |
3980 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
3981 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
3982 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 3983 | } |
cd93710e CL |
3984 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
3985 | } | |
3986 | ||
bb8b27e5 TM |
3987 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3988 | unsigned short port, struct rpc_cred *cred, | |
3989 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3990 | { |
3991 | nfs4_verifier sc_verifier; | |
3992 | struct nfs4_setclientid setclientid = { | |
3993 | .sc_verifier = &sc_verifier, | |
3994 | .sc_prog = program, | |
f4eecd5d | 3995 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3996 | }; |
3997 | struct rpc_message msg = { | |
3998 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3999 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4000 | .rpc_resp = res, |
286d7d6a | 4001 | .rpc_cred = cred, |
1da177e4 | 4002 | }; |
1da177e4 LT |
4003 | int loop = 0; |
4004 | int status; | |
4005 | ||
f092075d | 4006 | nfs4_init_boot_verifier(clp, &sc_verifier); |
1da177e4 LT |
4007 | |
4008 | for(;;) { | |
2446ab60 | 4009 | rcu_read_lock(); |
1da177e4 | 4010 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, |
69dd716c | 4011 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
4012 | clp->cl_ipaddr, |
4013 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4014 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
4015 | rpc_peeraddr2str(clp->cl_rpcclient, |
4016 | RPC_DISPLAY_PROTO), | |
78ea323b | 4017 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
4018 | clp->cl_id_uniquifier); |
4019 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
4020 | sizeof(setclientid.sc_netid), |
4021 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4022 | RPC_DISPLAY_NETID)); | |
1da177e4 | 4023 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 4024 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 | 4025 | clp->cl_ipaddr, port >> 8, port & 255); |
2446ab60 | 4026 | rcu_read_unlock(); |
1da177e4 | 4027 | |
1bd714f2 | 4028 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4029 | if (status != -NFS4ERR_CLID_INUSE) |
4030 | break; | |
fd954ae1 TM |
4031 | if (loop != 0) { |
4032 | ++clp->cl_id_uniquifier; | |
1da177e4 | 4033 | break; |
fd954ae1 TM |
4034 | } |
4035 | ++loop; | |
4036 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
4037 | } |
4038 | return status; | |
4039 | } | |
4040 | ||
fd954ae1 | 4041 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4042 | struct nfs4_setclientid_res *arg, |
4043 | struct rpc_cred *cred) | |
1da177e4 LT |
4044 | { |
4045 | struct nfs_fsinfo fsinfo; | |
4046 | struct rpc_message msg = { | |
4047 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4048 | .rpc_argp = arg, |
1da177e4 | 4049 | .rpc_resp = &fsinfo, |
286d7d6a | 4050 | .rpc_cred = cred, |
1da177e4 LT |
4051 | }; |
4052 | unsigned long now; | |
4053 | int status; | |
4054 | ||
4055 | now = jiffies; | |
1bd714f2 | 4056 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4057 | if (status == 0) { |
4058 | spin_lock(&clp->cl_lock); | |
4059 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4060 | clp->cl_last_renewal = now; | |
4061 | spin_unlock(&clp->cl_lock); | |
4062 | } | |
4063 | return status; | |
4064 | } | |
4065 | ||
fe650407 TM |
4066 | struct nfs4_delegreturndata { |
4067 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4068 | struct nfs4_delegreturnres res; |
fe650407 TM |
4069 | struct nfs_fh fh; |
4070 | nfs4_stateid stateid; | |
26e976a8 | 4071 | unsigned long timestamp; |
fa178f29 | 4072 | struct nfs_fattr fattr; |
fe650407 TM |
4073 | int rpc_status; |
4074 | }; | |
4075 | ||
fe650407 TM |
4076 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4077 | { | |
4078 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4079 | |
14516c3a TM |
4080 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4081 | return; | |
938e1010 | 4082 | |
79708861 RL |
4083 | switch (task->tk_status) { |
4084 | case -NFS4ERR_STALE_STATEID: | |
4085 | case -NFS4ERR_EXPIRED: | |
4086 | case 0: | |
fa178f29 | 4087 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4088 | break; |
4089 | default: | |
4090 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4091 | -EAGAIN) { | |
d00c5d43 | 4092 | rpc_restart_call_prepare(task); |
79708861 RL |
4093 | return; |
4094 | } | |
4095 | } | |
4096 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4097 | } |
4098 | ||
4099 | static void nfs4_delegreturn_release(void *calldata) | |
4100 | { | |
fe650407 TM |
4101 | kfree(calldata); |
4102 | } | |
4103 | ||
938e1010 AA |
4104 | #if defined(CONFIG_NFS_V4_1) |
4105 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4106 | { | |
4107 | struct nfs4_delegreturndata *d_data; | |
4108 | ||
4109 | d_data = (struct nfs4_delegreturndata *)data; | |
4110 | ||
035168ab | 4111 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 4112 | &d_data->args.seq_args, |
9d12b216 | 4113 | &d_data->res.seq_res, task)) |
938e1010 AA |
4114 | return; |
4115 | rpc_call_start(task); | |
4116 | } | |
4117 | #endif /* CONFIG_NFS_V4_1 */ | |
4118 | ||
c8d149f3 | 4119 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4120 | #if defined(CONFIG_NFS_V4_1) |
4121 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4122 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4123 | .rpc_call_done = nfs4_delegreturn_done, |
4124 | .rpc_release = nfs4_delegreturn_release, | |
4125 | }; | |
4126 | ||
e6f81075 | 4127 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4128 | { |
4129 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4130 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4131 | struct rpc_task *task; |
5138fde0 TM |
4132 | struct rpc_message msg = { |
4133 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4134 | .rpc_cred = cred, | |
4135 | }; | |
c970aa85 TM |
4136 | struct rpc_task_setup task_setup_data = { |
4137 | .rpc_client = server->client, | |
5138fde0 | 4138 | .rpc_message = &msg, |
c970aa85 TM |
4139 | .callback_ops = &nfs4_delegreturn_ops, |
4140 | .flags = RPC_TASK_ASYNC, | |
4141 | }; | |
e6f81075 | 4142 | int status = 0; |
fe650407 | 4143 | |
8535b2be | 4144 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4145 | if (data == NULL) |
4146 | return -ENOMEM; | |
9d12b216 | 4147 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4148 | data->args.fhandle = &data->fh; |
4149 | data->args.stateid = &data->stateid; | |
9e907fec | 4150 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4151 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4152 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4153 | data->res.fattr = &data->fattr; |
4154 | data->res.server = server; | |
5138fde0 | 4155 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4156 | data->timestamp = jiffies; |
fe650407 TM |
4157 | data->rpc_status = 0; |
4158 | ||
c970aa85 | 4159 | task_setup_data.callback_data = data; |
1174dd1f TM |
4160 | msg.rpc_argp = &data->args; |
4161 | msg.rpc_resp = &data->res; | |
c970aa85 | 4162 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4163 | if (IS_ERR(task)) |
fe650407 | 4164 | return PTR_ERR(task); |
e6f81075 TM |
4165 | if (!issync) |
4166 | goto out; | |
fe650407 | 4167 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4168 | if (status != 0) |
4169 | goto out; | |
4170 | status = data->rpc_status; | |
e144cbcc TM |
4171 | if (status == 0) |
4172 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4173 | else | |
4174 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4175 | out: |
e6b3c4db | 4176 | rpc_put_task(task); |
fe650407 | 4177 | return status; |
1da177e4 LT |
4178 | } |
4179 | ||
e6f81075 | 4180 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4181 | { |
4182 | struct nfs_server *server = NFS_SERVER(inode); | |
4183 | struct nfs4_exception exception = { }; | |
4184 | int err; | |
4185 | do { | |
e6f81075 | 4186 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4187 | switch (err) { |
4188 | case -NFS4ERR_STALE_STATEID: | |
4189 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4190 | case 0: |
4191 | return 0; | |
4192 | } | |
4193 | err = nfs4_handle_exception(server, err, &exception); | |
4194 | } while (exception.retry); | |
4195 | return err; | |
4196 | } | |
4197 | ||
4198 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4199 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4200 | ||
4201 | /* | |
4202 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4203 | */ | |
4204 | static unsigned long | |
4205 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4206 | { | |
d310310c | 4207 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4208 | timeout <<= 1; |
4209 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4210 | return NFS4_LOCK_MAXTIMEOUT; | |
4211 | return timeout; | |
4212 | } | |
4213 | ||
1da177e4 LT |
4214 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4215 | { | |
4216 | struct inode *inode = state->inode; | |
4217 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4218 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4219 | struct nfs_lockt_args arg = { |
1da177e4 | 4220 | .fh = NFS_FH(inode), |
911d1aaf | 4221 | .fl = request, |
1da177e4 | 4222 | }; |
911d1aaf TM |
4223 | struct nfs_lockt_res res = { |
4224 | .denied = request, | |
1da177e4 LT |
4225 | }; |
4226 | struct rpc_message msg = { | |
4227 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4228 | .rpc_argp = &arg, | |
4229 | .rpc_resp = &res, | |
4230 | .rpc_cred = state->owner->so_cred, | |
4231 | }; | |
1da177e4 LT |
4232 | struct nfs4_lock_state *lsp; |
4233 | int status; | |
4234 | ||
911d1aaf | 4235 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4236 | status = nfs4_set_lock_state(state, request); |
4237 | if (status != 0) | |
4238 | goto out; | |
4239 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4240 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4241 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4242 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4243 | switch (status) { |
4244 | case 0: | |
4245 | request->fl_type = F_UNLCK; | |
4246 | break; | |
4247 | case -NFS4ERR_DENIED: | |
4248 | status = 0; | |
1da177e4 | 4249 | } |
70cc6487 | 4250 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4251 | out: |
1da177e4 LT |
4252 | return status; |
4253 | } | |
4254 | ||
4255 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4256 | { | |
4257 | struct nfs4_exception exception = { }; | |
4258 | int err; | |
4259 | ||
4260 | do { | |
4261 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4262 | _nfs4_proc_getlk(state, cmd, request), | |
4263 | &exception); | |
4264 | } while (exception.retry); | |
4265 | return err; | |
4266 | } | |
4267 | ||
4268 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4269 | { | |
4270 | int res = 0; | |
4271 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4272 | case FL_POSIX: | |
4273 | res = posix_lock_file_wait(file, fl); | |
4274 | break; | |
4275 | case FL_FLOCK: | |
4276 | res = flock_lock_file_wait(file, fl); | |
4277 | break; | |
4278 | default: | |
4279 | BUG(); | |
4280 | } | |
1da177e4 LT |
4281 | return res; |
4282 | } | |
4283 | ||
faf5f49c | 4284 | struct nfs4_unlockdata { |
911d1aaf TM |
4285 | struct nfs_locku_args arg; |
4286 | struct nfs_locku_res res; | |
faf5f49c TM |
4287 | struct nfs4_lock_state *lsp; |
4288 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4289 | struct file_lock fl; |
4290 | const struct nfs_server *server; | |
26e976a8 | 4291 | unsigned long timestamp; |
faf5f49c TM |
4292 | }; |
4293 | ||
911d1aaf TM |
4294 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4295 | struct nfs_open_context *ctx, | |
4296 | struct nfs4_lock_state *lsp, | |
4297 | struct nfs_seqid *seqid) | |
4298 | { | |
4299 | struct nfs4_unlockdata *p; | |
4300 | struct inode *inode = lsp->ls_state->inode; | |
4301 | ||
8535b2be | 4302 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4303 | if (p == NULL) |
4304 | return NULL; | |
4305 | p->arg.fh = NFS_FH(inode); | |
4306 | p->arg.fl = &p->fl; | |
4307 | p->arg.seqid = seqid; | |
c1d51931 | 4308 | p->res.seqid = seqid; |
911d1aaf TM |
4309 | p->arg.stateid = &lsp->ls_stateid; |
4310 | p->lsp = lsp; | |
4311 | atomic_inc(&lsp->ls_count); | |
4312 | /* Ensure we don't close file until we're done freeing locks! */ | |
4313 | p->ctx = get_nfs_open_context(ctx); | |
4314 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4315 | p->server = NFS_SERVER(inode); | |
4316 | return p; | |
4317 | } | |
4318 | ||
06f814a3 | 4319 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4320 | { |
963d8fe5 | 4321 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4322 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4323 | nfs4_put_lock_state(calldata->lsp); |
4324 | put_nfs_open_context(calldata->ctx); | |
4325 | kfree(calldata); | |
faf5f49c TM |
4326 | } |
4327 | ||
963d8fe5 | 4328 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4329 | { |
963d8fe5 | 4330 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4331 | |
14516c3a TM |
4332 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4333 | return; | |
faf5f49c TM |
4334 | switch (task->tk_status) { |
4335 | case 0: | |
f597c537 TM |
4336 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4337 | &calldata->res.stateid); | |
26e976a8 | 4338 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4339 | break; |
9e33bed5 TM |
4340 | case -NFS4ERR_BAD_STATEID: |
4341 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4342 | case -NFS4ERR_STALE_STATEID: |
4343 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4344 | break; |
4345 | default: | |
9e33bed5 | 4346 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4347 | rpc_restart_call_prepare(task); |
faf5f49c | 4348 | } |
faf5f49c TM |
4349 | } |
4350 | ||
4ce70ada | 4351 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4352 | { |
4ce70ada | 4353 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4354 | |
911d1aaf | 4355 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4356 | return; |
4357 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4358 | /* Note: exit _without_ running nfs4_locku_done */ |
4359 | task->tk_action = NULL; | |
faf5f49c TM |
4360 | return; |
4361 | } | |
26e976a8 | 4362 | calldata->timestamp = jiffies; |
035168ab | 4363 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4364 | &calldata->arg.seq_args, |
9d12b216 | 4365 | &calldata->res.seq_res, task)) |
a893693c | 4366 | return; |
5138fde0 | 4367 | rpc_call_start(task); |
faf5f49c TM |
4368 | } |
4369 | ||
963d8fe5 | 4370 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4371 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4372 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4373 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4374 | }; |
4375 | ||
a5d16a4d TM |
4376 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4377 | struct nfs_open_context *ctx, | |
4378 | struct nfs4_lock_state *lsp, | |
4379 | struct nfs_seqid *seqid) | |
4380 | { | |
4381 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4382 | struct rpc_message msg = { |
4383 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4384 | .rpc_cred = ctx->cred, | |
4385 | }; | |
c970aa85 TM |
4386 | struct rpc_task_setup task_setup_data = { |
4387 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4388 | .rpc_message = &msg, |
c970aa85 | 4389 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4390 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4391 | .flags = RPC_TASK_ASYNC, |
4392 | }; | |
a5d16a4d | 4393 | |
137d6aca FF |
4394 | /* Ensure this is an unlock - when canceling a lock, the |
4395 | * canceled lock is passed in, and it won't be an unlock. | |
4396 | */ | |
4397 | fl->fl_type = F_UNLCK; | |
4398 | ||
a5d16a4d TM |
4399 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4400 | if (data == NULL) { | |
4401 | nfs_free_seqid(seqid); | |
4402 | return ERR_PTR(-ENOMEM); | |
4403 | } | |
4404 | ||
9d12b216 | 4405 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4406 | msg.rpc_argp = &data->arg; |
4407 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4408 | task_setup_data.callback_data = data; |
4409 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4410 | } |
4411 | ||
faf5f49c TM |
4412 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4413 | { | |
19e03c57 | 4414 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4415 | struct nfs_seqid *seqid; |
1da177e4 | 4416 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4417 | struct rpc_task *task; |
4418 | int status = 0; | |
536ff0f8 | 4419 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4420 | |
8d0a8a9d | 4421 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4422 | /* Unlock _before_ we do the RPC call */ |
4423 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4424 | down_read(&nfsi->rwsem); |
4425 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4426 | up_read(&nfsi->rwsem); | |
9b073574 | 4427 | goto out; |
19e03c57 TM |
4428 | } |
4429 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4430 | if (status != 0) |
9b073574 TM |
4431 | goto out; |
4432 | /* Is this a delegated lock? */ | |
4433 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4434 | goto out; | |
8d0a8a9d | 4435 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4436 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4437 | status = -ENOMEM; |
911d1aaf | 4438 | if (seqid == NULL) |
9b073574 | 4439 | goto out; |
cd3758e3 | 4440 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4441 | status = PTR_ERR(task); |
4442 | if (IS_ERR(task)) | |
9b073574 | 4443 | goto out; |
a5d16a4d | 4444 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4445 | rpc_put_task(task); |
9b073574 | 4446 | out: |
536ff0f8 | 4447 | request->fl_flags = fl_flags; |
1da177e4 LT |
4448 | return status; |
4449 | } | |
4450 | ||
a5d16a4d TM |
4451 | struct nfs4_lockdata { |
4452 | struct nfs_lock_args arg; | |
4453 | struct nfs_lock_res res; | |
4454 | struct nfs4_lock_state *lsp; | |
4455 | struct nfs_open_context *ctx; | |
4456 | struct file_lock fl; | |
26e976a8 | 4457 | unsigned long timestamp; |
a5d16a4d TM |
4458 | int rpc_status; |
4459 | int cancelled; | |
66179efe | 4460 | struct nfs_server *server; |
a5d16a4d TM |
4461 | }; |
4462 | ||
4463 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4464 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4465 | gfp_t gfp_mask) | |
1da177e4 | 4466 | { |
a5d16a4d TM |
4467 | struct nfs4_lockdata *p; |
4468 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4469 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4470 | |
8535b2be | 4471 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4472 | if (p == NULL) |
4473 | return NULL; | |
4474 | ||
4475 | p->arg.fh = NFS_FH(inode); | |
4476 | p->arg.fl = &p->fl; | |
8535b2be | 4477 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4478 | if (p->arg.open_seqid == NULL) |
4479 | goto out_free; | |
8535b2be | 4480 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4481 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4482 | goto out_free_seqid; |
a5d16a4d | 4483 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4484 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4485 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4486 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4487 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4488 | p->lsp = lsp; |
66179efe | 4489 | p->server = server; |
a5d16a4d TM |
4490 | atomic_inc(&lsp->ls_count); |
4491 | p->ctx = get_nfs_open_context(ctx); | |
4492 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4493 | return p; | |
2f74c0a0 TM |
4494 | out_free_seqid: |
4495 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4496 | out_free: |
4497 | kfree(p); | |
4498 | return NULL; | |
4499 | } | |
4500 | ||
4501 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4502 | { | |
4503 | struct nfs4_lockdata *data = calldata; | |
4504 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4505 | |
3110ff80 | 4506 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4507 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4508 | return; | |
a5d16a4d TM |
4509 | /* Do we need to do an open_to_lock_owner? */ |
4510 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4511 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4512 | return; | |
a5d16a4d TM |
4513 | data->arg.open_stateid = &state->stateid; |
4514 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4515 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4516 | } else |
4517 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4518 | data->timestamp = jiffies; |
035168ab TM |
4519 | if (nfs4_setup_sequence(data->server, |
4520 | &data->arg.seq_args, | |
9d12b216 | 4521 | &data->res.seq_res, task)) |
66179efe | 4522 | return; |
5138fde0 | 4523 | rpc_call_start(task); |
3110ff80 | 4524 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4525 | } |
4526 | ||
b257957e AB |
4527 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4528 | { | |
4529 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4530 | nfs4_lock_prepare(task, calldata); | |
4531 | } | |
4532 | ||
a5d16a4d TM |
4533 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4534 | { | |
4535 | struct nfs4_lockdata *data = calldata; | |
4536 | ||
3110ff80 | 4537 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4538 | |
14516c3a TM |
4539 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4540 | return; | |
66179efe | 4541 | |
a5d16a4d | 4542 | data->rpc_status = task->tk_status; |
a5d16a4d | 4543 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4544 | if (data->rpc_status == 0) |
4545 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4546 | else | |
4547 | goto out; | |
4548 | } | |
4549 | if (data->rpc_status == 0) { | |
f597c537 | 4550 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
a5d16a4d | 4551 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; |
3d4ff43d | 4552 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4553 | } |
a5d16a4d | 4554 | out: |
3110ff80 | 4555 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4556 | } |
4557 | ||
4558 | static void nfs4_lock_release(void *calldata) | |
4559 | { | |
4560 | struct nfs4_lockdata *data = calldata; | |
4561 | ||
3110ff80 | 4562 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4563 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4564 | if (data->cancelled != 0) { |
4565 | struct rpc_task *task; | |
4566 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4567 | data->arg.lock_seqid); | |
4568 | if (!IS_ERR(task)) | |
bf294b41 | 4569 | rpc_put_task_async(task); |
3110ff80 | 4570 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4571 | } else |
4572 | nfs_free_seqid(data->arg.lock_seqid); | |
4573 | nfs4_put_lock_state(data->lsp); | |
4574 | put_nfs_open_context(data->ctx); | |
4575 | kfree(data); | |
3110ff80 | 4576 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4577 | } |
4578 | ||
4579 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4580 | .rpc_call_prepare = nfs4_lock_prepare, | |
4581 | .rpc_call_done = nfs4_lock_done, | |
4582 | .rpc_release = nfs4_lock_release, | |
4583 | }; | |
4584 | ||
b257957e AB |
4585 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4586 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4587 | .rpc_call_done = nfs4_lock_done, | |
4588 | .rpc_release = nfs4_lock_release, | |
4589 | }; | |
4590 | ||
2bee72a6 TM |
4591 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4592 | { | |
2bee72a6 TM |
4593 | switch (error) { |
4594 | case -NFS4ERR_ADMIN_REVOKED: | |
4595 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4596 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4597 | if (new_lock_owner != 0 || |
4598 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4599 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4600 | break; |
4601 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4602 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4603 | case -NFS4ERR_EXPIRED: |
4604 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4605 | }; |
4606 | } | |
4607 | ||
afe6c27c | 4608 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4609 | { |
4610 | struct nfs4_lockdata *data; | |
4611 | struct rpc_task *task; | |
5138fde0 TM |
4612 | struct rpc_message msg = { |
4613 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4614 | .rpc_cred = state->owner->so_cred, | |
4615 | }; | |
c970aa85 TM |
4616 | struct rpc_task_setup task_setup_data = { |
4617 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4618 | .rpc_message = &msg, |
c970aa85 | 4619 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4620 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4621 | .flags = RPC_TASK_ASYNC, |
4622 | }; | |
a5d16a4d TM |
4623 | int ret; |
4624 | ||
3110ff80 | 4625 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4626 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4627 | fl->fl_u.nfs4_fl.owner, |
4628 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4629 | if (data == NULL) |
4630 | return -ENOMEM; | |
4631 | if (IS_SETLKW(cmd)) | |
4632 | data->arg.block = 1; | |
b257957e AB |
4633 | if (recovery_type > NFS_LOCK_NEW) { |
4634 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4635 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4636 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4637 | } | |
9d12b216 | 4638 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4639 | msg.rpc_argp = &data->arg; |
4640 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4641 | task_setup_data.callback_data = data; |
4642 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4643 | if (IS_ERR(task)) |
a5d16a4d | 4644 | return PTR_ERR(task); |
a5d16a4d TM |
4645 | ret = nfs4_wait_for_completion_rpc_task(task); |
4646 | if (ret == 0) { | |
4647 | ret = data->rpc_status; | |
2bee72a6 TM |
4648 | if (ret) |
4649 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4650 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4651 | } else |
4652 | data->cancelled = 1; | |
e6b3c4db | 4653 | rpc_put_task(task); |
3110ff80 | 4654 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4655 | return ret; |
1da177e4 LT |
4656 | } |
4657 | ||
4658 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4659 | { | |
202b50dc | 4660 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4661 | struct nfs4_exception exception = { |
4662 | .inode = state->inode, | |
4663 | }; | |
202b50dc TM |
4664 | int err; |
4665 | ||
4666 | do { | |
42a2d13e TM |
4667 | /* Cache the lock if possible... */ |
4668 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4669 | return 0; | |
afe6c27c | 4670 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4671 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4672 | break; |
4673 | nfs4_handle_exception(server, err, &exception); | |
4674 | } while (exception.retry); | |
4675 | return err; | |
1da177e4 LT |
4676 | } |
4677 | ||
4678 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4679 | { | |
202b50dc | 4680 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4681 | struct nfs4_exception exception = { |
4682 | .inode = state->inode, | |
4683 | }; | |
202b50dc TM |
4684 | int err; |
4685 | ||
6bfc93ef TM |
4686 | err = nfs4_set_lock_state(state, request); |
4687 | if (err != 0) | |
4688 | return err; | |
202b50dc | 4689 | do { |
42a2d13e TM |
4690 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4691 | return 0; | |
afe6c27c | 4692 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4693 | switch (err) { |
4694 | default: | |
4695 | goto out; | |
4696 | case -NFS4ERR_GRACE: | |
4697 | case -NFS4ERR_DELAY: | |
4698 | nfs4_handle_exception(server, err, &exception); | |
4699 | err = 0; | |
4700 | } | |
202b50dc | 4701 | } while (exception.retry); |
a9ed2e25 | 4702 | out: |
202b50dc | 4703 | return err; |
1da177e4 LT |
4704 | } |
4705 | ||
f062eb6c | 4706 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 4707 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4708 | { |
b01dd1d8 BS |
4709 | int status, ret = NFS_OK; |
4710 | struct nfs4_lock_state *lsp; | |
f062eb6c BS |
4711 | struct nfs_server *server = NFS_SERVER(state->inode); |
4712 | ||
b01dd1d8 BS |
4713 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
4714 | if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { | |
4715 | status = nfs41_test_stateid(server, &lsp->ls_stateid); | |
4716 | if (status != NFS_OK) { | |
4717 | nfs41_free_stateid(server, &lsp->ls_stateid); | |
4718 | lsp->ls_flags &= ~NFS_LOCK_INITIALIZED; | |
4719 | ret = status; | |
4720 | } | |
4721 | } | |
4722 | }; | |
4723 | ||
4724 | return ret; | |
4725 | } | |
4726 | ||
4727 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4728 | { | |
4729 | int status = NFS_OK; | |
4730 | ||
4731 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4732 | status = nfs41_check_expired_locks(state); | |
f062eb6c | 4733 | if (status == NFS_OK) |
b01dd1d8 | 4734 | return status; |
f062eb6c BS |
4735 | return nfs4_lock_expired(state, request); |
4736 | } | |
4737 | #endif | |
4738 | ||
1da177e4 LT |
4739 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4740 | { | |
19e03c57 | 4741 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4742 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4743 | int status = -ENOLCK; |
1da177e4 | 4744 | |
8e469ebd TM |
4745 | if ((fl_flags & FL_POSIX) && |
4746 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4747 | goto out; | |
6bfc93ef | 4748 | /* Is this a delegated open? */ |
6bfc93ef TM |
4749 | status = nfs4_set_lock_state(state, request); |
4750 | if (status != 0) | |
4751 | goto out; | |
01c3b861 TM |
4752 | request->fl_flags |= FL_ACCESS; |
4753 | status = do_vfs_lock(request->fl_file, request); | |
4754 | if (status < 0) | |
4755 | goto out; | |
19e03c57 | 4756 | down_read(&nfsi->rwsem); |
01c3b861 | 4757 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4758 | /* Yes: cache locks! */ |
01c3b861 | 4759 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4760 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4761 | status = do_vfs_lock(request->fl_file, request); | |
4762 | goto out_unlock; | |
01c3b861 | 4763 | } |
afe6c27c | 4764 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4765 | if (status != 0) |
01c3b861 | 4766 | goto out_unlock; |
6bfc93ef | 4767 | /* Note: we always want to sleep here! */ |
01c3b861 | 4768 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4769 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4770 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4771 | "manager!\n", __func__); | |
01c3b861 | 4772 | out_unlock: |
19e03c57 | 4773 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4774 | out: |
4775 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4776 | return status; |
4777 | } | |
4778 | ||
4779 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4780 | { | |
a1d0b5ee TM |
4781 | struct nfs4_exception exception = { |
4782 | .state = state, | |
05ffe24f | 4783 | .inode = state->inode, |
a1d0b5ee | 4784 | }; |
1da177e4 LT |
4785 | int err; |
4786 | ||
4787 | do { | |
965b5d67 TM |
4788 | err = _nfs4_proc_setlk(state, cmd, request); |
4789 | if (err == -NFS4ERR_DENIED) | |
4790 | err = -EAGAIN; | |
1da177e4 | 4791 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4792 | err, &exception); |
1da177e4 LT |
4793 | } while (exception.retry); |
4794 | return err; | |
4795 | } | |
4796 | ||
4797 | static int | |
4798 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4799 | { | |
4800 | struct nfs_open_context *ctx; | |
4801 | struct nfs4_state *state; | |
4802 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4803 | int status; | |
4804 | ||
4805 | /* verify open state */ | |
cd3758e3 | 4806 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4807 | state = ctx->state; |
4808 | ||
4809 | if (request->fl_start < 0 || request->fl_end < 0) | |
4810 | return -EINVAL; | |
4811 | ||
d953126a TM |
4812 | if (IS_GETLK(cmd)) { |
4813 | if (state != NULL) | |
4814 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4815 | return 0; | |
4816 | } | |
1da177e4 LT |
4817 | |
4818 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4819 | return -EINVAL; | |
4820 | ||
d953126a TM |
4821 | if (request->fl_type == F_UNLCK) { |
4822 | if (state != NULL) | |
4823 | return nfs4_proc_unlck(state, cmd, request); | |
4824 | return 0; | |
4825 | } | |
1da177e4 | 4826 | |
d953126a TM |
4827 | if (state == NULL) |
4828 | return -ENOLCK; | |
55725513 TM |
4829 | /* |
4830 | * Don't rely on the VFS having checked the file open mode, | |
4831 | * since it won't do this for flock() locks. | |
4832 | */ | |
4833 | switch (request->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) { | |
4834 | case F_RDLCK: | |
4835 | if (!(filp->f_mode & FMODE_READ)) | |
4836 | return -EBADF; | |
4837 | break; | |
4838 | case F_WRLCK: | |
4839 | if (!(filp->f_mode & FMODE_WRITE)) | |
4840 | return -EBADF; | |
4841 | } | |
4842 | ||
1da177e4 LT |
4843 | do { |
4844 | status = nfs4_proc_setlk(state, cmd, request); | |
4845 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4846 | break; | |
4847 | timeout = nfs4_set_lock_task_retry(timeout); | |
4848 | status = -ERESTARTSYS; | |
4849 | if (signalled()) | |
4850 | break; | |
4851 | } while(status < 0); | |
1da177e4 LT |
4852 | return status; |
4853 | } | |
4854 | ||
888e694c TM |
4855 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4856 | { | |
4857 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4858 | struct nfs4_exception exception = { }; | |
4859 | int err; | |
4860 | ||
4861 | err = nfs4_set_lock_state(state, fl); | |
4862 | if (err != 0) | |
4863 | goto out; | |
4864 | do { | |
afe6c27c | 4865 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4866 | switch (err) { |
4867 | default: | |
a030889a WAA |
4868 | printk(KERN_ERR "NFS: %s: unhandled error " |
4869 | "%d.\n", __func__, err); | |
d5122201 | 4870 | case 0: |
965b5d67 | 4871 | case -ESTALE: |
d5122201 TM |
4872 | goto out; |
4873 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4874 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4875 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4876 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4877 | nfs4_schedule_lease_recovery(server->nfs_client); |
4878 | goto out; | |
74e7bb73 RL |
4879 | case -NFS4ERR_BADSESSION: |
4880 | case -NFS4ERR_BADSLOT: | |
4881 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4882 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4883 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 4884 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
d5122201 | 4885 | goto out; |
965b5d67 TM |
4886 | case -ERESTARTSYS: |
4887 | /* | |
4888 | * The show must go on: exit, but mark the | |
4889 | * stateid as needing recovery. | |
4890 | */ | |
a1d0b5ee | 4891 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
4892 | case -NFS4ERR_ADMIN_REVOKED: |
4893 | case -NFS4ERR_BAD_STATEID: | |
4894 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4895 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4896 | err = 0; |
4897 | goto out; | |
168667c4 TM |
4898 | case -EKEYEXPIRED: |
4899 | /* | |
4900 | * User RPCSEC_GSS context has expired. | |
4901 | * We cannot recover this stateid now, so | |
4902 | * skip it and allow recovery thread to | |
4903 | * proceed. | |
4904 | */ | |
4905 | err = 0; | |
4906 | goto out; | |
965b5d67 TM |
4907 | case -ENOMEM: |
4908 | case -NFS4ERR_DENIED: | |
4909 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4910 | err = 0; | |
4911 | goto out; | |
d5122201 TM |
4912 | case -NFS4ERR_DELAY: |
4913 | break; | |
4914 | } | |
888e694c TM |
4915 | err = nfs4_handle_exception(server, err, &exception); |
4916 | } while (exception.retry); | |
4917 | out: | |
4918 | return err; | |
4919 | } | |
6b3b5496 | 4920 | |
cf470c3e TM |
4921 | struct nfs_release_lockowner_data { |
4922 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 4923 | struct nfs_server *server; |
cf470c3e TM |
4924 | struct nfs_release_lockowner_args args; |
4925 | }; | |
4926 | ||
d3c7b7cc TM |
4927 | static void nfs4_release_lockowner_release(void *calldata) |
4928 | { | |
cf470c3e | 4929 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 4930 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
4931 | kfree(calldata); |
4932 | } | |
4933 | ||
17280175 | 4934 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
4935 | .rpc_release = nfs4_release_lockowner_release, |
4936 | }; | |
4937 | ||
cf470c3e | 4938 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
4939 | { |
4940 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 4941 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
4942 | struct rpc_message msg = { |
4943 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4944 | }; | |
4945 | ||
4946 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
4947 | return -EINVAL; |
4948 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
4949 | if (!data) | |
4950 | return -ENOMEM; | |
4951 | data->lsp = lsp; | |
5ae67c4f | 4952 | data->server = server; |
cf470c3e TM |
4953 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
4954 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
4955 | data->args.lock_owner.s_dev = server->s_dev; | |
4956 | msg.rpc_argp = &data->args; | |
4957 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
4958 | return 0; | |
d3c7b7cc TM |
4959 | } |
4960 | ||
aa1870af BF |
4961 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4962 | ||
64c2ce8b AK |
4963 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4964 | const void *buf, size_t buflen, | |
4965 | int flags, int type) | |
6b3b5496 | 4966 | { |
64c2ce8b AK |
4967 | if (strcmp(key, "") != 0) |
4968 | return -EINVAL; | |
4b580ee3 | 4969 | |
64c2ce8b | 4970 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4971 | } |
4972 | ||
64c2ce8b AK |
4973 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4974 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4975 | { |
64c2ce8b AK |
4976 | if (strcmp(key, "") != 0) |
4977 | return -EINVAL; | |
aa1870af | 4978 | |
64c2ce8b | 4979 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4980 | } |
4981 | ||
64c2ce8b AK |
4982 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4983 | size_t list_len, const char *name, | |
4984 | size_t name_len, int type) | |
6b3b5496 | 4985 | { |
64c2ce8b | 4986 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4987 | |
096455a2 BF |
4988 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4989 | return 0; | |
64c2ce8b AK |
4990 | |
4991 | if (list && len <= list_len) | |
4992 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4993 | return len; |
6b3b5496 BF |
4994 | } |
4995 | ||
533eb461 AA |
4996 | /* |
4997 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4998 | */ | |
69aaaae1 TM |
4999 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5000 | { | |
533eb461 AA |
5001 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5002 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5003 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5004 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5005 | return; |
5006 | ||
5007 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5008 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5009 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5010 | fattr->nlink = 2; | |
5011 | } | |
5012 | ||
f05d147f BS |
5013 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5014 | const struct qstr *name, | |
5015 | struct nfs4_fs_locations *fs_locations, | |
5016 | struct page *page) | |
683b57b4 TM |
5017 | { |
5018 | struct nfs_server *server = NFS_SERVER(dir); | |
5019 | u32 bitmask[2] = { | |
361e624f | 5020 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5021 | }; |
5022 | struct nfs4_fs_locations_arg args = { | |
5023 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5024 | .name = name, |
683b57b4 TM |
5025 | .page = page, |
5026 | .bitmask = bitmask, | |
5027 | }; | |
22958463 BH |
5028 | struct nfs4_fs_locations_res res = { |
5029 | .fs_locations = fs_locations, | |
5030 | }; | |
683b57b4 TM |
5031 | struct rpc_message msg = { |
5032 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5033 | .rpc_argp = &args, | |
22958463 | 5034 | .rpc_resp = &res, |
683b57b4 TM |
5035 | }; |
5036 | int status; | |
5037 | ||
3110ff80 | 5038 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5039 | |
5040 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5041 | * is not supported */ | |
5042 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5043 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5044 | else | |
5045 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5046 | ||
c228fd3a | 5047 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5048 | fs_locations->server = server; |
830b8e33 | 5049 | fs_locations->nlocations = 0; |
f05d147f | 5050 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5051 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5052 | return status; |
5053 | } | |
5054 | ||
f05d147f BS |
5055 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5056 | const struct qstr *name, | |
5057 | struct nfs4_fs_locations *fs_locations, | |
5058 | struct page *page) | |
db0a9593 BS |
5059 | { |
5060 | struct nfs4_exception exception = { }; | |
5061 | int err; | |
5062 | do { | |
5063 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5064 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5065 | &exception); |
5066 | } while (exception.retry); | |
5067 | return err; | |
5068 | } | |
5069 | ||
5a5ea0d4 BS |
5070 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5071 | { | |
5072 | int status; | |
5073 | struct nfs4_secinfo_arg args = { | |
5074 | .dir_fh = NFS_FH(dir), | |
5075 | .name = name, | |
5076 | }; | |
5077 | struct nfs4_secinfo_res res = { | |
5078 | .flavors = flavors, | |
5079 | }; | |
5080 | struct rpc_message msg = { | |
5081 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5082 | .rpc_argp = &args, | |
5083 | .rpc_resp = &res, | |
5084 | }; | |
5085 | ||
5086 | dprintk("NFS call secinfo %s\n", name->name); | |
5087 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5088 | dprintk("NFS reply secinfo: %d\n", status); | |
5089 | return status; | |
5090 | } | |
5091 | ||
72de53ec BS |
5092 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5093 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5094 | { |
5095 | struct nfs4_exception exception = { }; | |
5096 | int err; | |
5097 | do { | |
5098 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5099 | _nfs4_proc_secinfo(dir, name, flavors), | |
5100 | &exception); | |
5101 | } while (exception.retry); | |
5102 | return err; | |
5103 | } | |
5104 | ||
557134a3 | 5105 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5106 | /* |
5107 | * Check the exchange flags returned by the server for invalid flags, having | |
5108 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5109 | * DS flags set. | |
5110 | */ | |
5111 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5112 | { | |
5113 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5114 | goto out_inval; | |
5115 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5116 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5117 | goto out_inval; | |
5118 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5119 | goto out_inval; | |
5120 | return NFS_OK; | |
5121 | out_inval: | |
5122 | return -NFS4ERR_INVAL; | |
5123 | } | |
5124 | ||
78fe0f41 | 5125 | static bool |
79d4e1f0 CL |
5126 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5127 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5128 | { |
5129 | if (a->server_scope_sz == b->server_scope_sz && | |
5130 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5131 | return true; | |
5132 | ||
5133 | return false; | |
5134 | } | |
5135 | ||
7c44f1ae WAA |
5136 | /* |
5137 | * nfs4_proc_bind_conn_to_session() | |
5138 | * | |
5139 | * The 4.1 client currently uses the same TCP connection for the | |
5140 | * fore and backchannel. | |
5141 | */ | |
2cf047c9 | 5142 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5143 | { |
5144 | int status; | |
5145 | struct nfs41_bind_conn_to_session_res res; | |
5146 | struct rpc_message msg = { | |
5147 | .rpc_proc = | |
5148 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5149 | .rpc_argp = clp, | |
5150 | .rpc_resp = &res, | |
2cf047c9 | 5151 | .rpc_cred = cred, |
7c44f1ae WAA |
5152 | }; |
5153 | ||
5154 | dprintk("--> %s\n", __func__); | |
5155 | BUG_ON(clp == NULL); | |
5156 | ||
5157 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5158 | if (unlikely(res.session == NULL)) { | |
5159 | status = -ENOMEM; | |
5160 | goto out; | |
5161 | } | |
5162 | ||
5163 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5164 | if (status == 0) { | |
5165 | if (memcmp(res.session->sess_id.data, | |
5166 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5167 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5168 | status = -EIO; | |
5169 | goto out_session; | |
5170 | } | |
5171 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5172 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5173 | __func__); | |
5174 | status = -EIO; | |
5175 | goto out_session; | |
5176 | } | |
5177 | if (res.use_conn_in_rdma_mode) { | |
5178 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5179 | __func__); | |
5180 | status = -EIO; | |
5181 | goto out_session; | |
5182 | } | |
5183 | } | |
5184 | out_session: | |
5185 | kfree(res.session); | |
5186 | out: | |
5187 | dprintk("<-- %s status= %d\n", __func__, status); | |
5188 | return status; | |
5189 | } | |
5190 | ||
99fe60d0 BH |
5191 | /* |
5192 | * nfs4_proc_exchange_id() | |
5193 | * | |
5194 | * Since the clientid has expired, all compounds using sessions | |
5195 | * associated with the stale clientid will be returning | |
5196 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5197 | * be in some phase of session reset. | |
5198 | */ | |
4d643d1d | 5199 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5200 | { |
5201 | nfs4_verifier verifier; | |
5202 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5203 | .verifier = &verifier, |
99fe60d0 | 5204 | .client = clp, |
357f54d6 | 5205 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5206 | }; |
5207 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5208 | 0 |
99fe60d0 BH |
5209 | }; |
5210 | int status; | |
5211 | struct rpc_message msg = { | |
5212 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5213 | .rpc_argp = &args, | |
5214 | .rpc_resp = &res, | |
5215 | .rpc_cred = cred, | |
5216 | }; | |
99fe60d0 BH |
5217 | |
5218 | dprintk("--> %s\n", __func__); | |
5219 | BUG_ON(clp == NULL); | |
a7b72103 | 5220 | |
f092075d | 5221 | nfs4_init_boot_verifier(clp, &verifier); |
99fe60d0 | 5222 | |
c7a360b0 | 5223 | args.id_len = scnprintf(args.id, sizeof(args.id), |
3617e503 | 5224 | "%s/%s/%u", |
c7a360b0 | 5225 | clp->cl_ipaddr, |
3617e503 | 5226 | clp->cl_rpcclient->cl_nodename, |
c7a360b0 | 5227 | clp->cl_rpcclient->cl_auth->au_flavor); |
99fe60d0 | 5228 | |
acdeb69d | 5229 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5230 | GFP_NOFS); |
acdeb69d | 5231 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5232 | status = -ENOMEM; |
5233 | goto out; | |
5234 | } | |
78fe0f41 | 5235 | |
79d4e1f0 | 5236 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5237 | GFP_NOFS); |
177313f1 | 5238 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5239 | status = -ENOMEM; |
acdeb69d | 5240 | goto out_server_owner; |
abe9a6d5 | 5241 | } |
78fe0f41 | 5242 | |
bbafffd2 | 5243 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5244 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5245 | status = -ENOMEM; |
5246 | goto out_server_scope; | |
5247 | } | |
5248 | ||
1bd714f2 | 5249 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5250 | if (status == 0) |
32b01310 | 5251 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5252 | |
acdeb69d | 5253 | if (status == 0) { |
32b01310 TM |
5254 | clp->cl_clientid = res.clientid; |
5255 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5256 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5257 | clp->cl_seqid = res.seqid; | |
5258 | ||
acdeb69d CL |
5259 | kfree(clp->cl_serverowner); |
5260 | clp->cl_serverowner = res.server_owner; | |
5261 | res.server_owner = NULL; | |
78fe0f41 | 5262 | |
7d2ed9ac | 5263 | /* use the most recent implementation id */ |
59155546 CL |
5264 | kfree(clp->cl_implid); |
5265 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5266 | |
177313f1 | 5267 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5268 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5269 | res.server_scope)) { |
5270 | dprintk("%s: server_scope mismatch detected\n", | |
5271 | __func__); | |
5272 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5273 | kfree(clp->cl_serverscope); |
5274 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5275 | } |
5276 | ||
177313f1 | 5277 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5278 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5279 | goto out; |
5280 | } | |
32b01310 TM |
5281 | } else |
5282 | kfree(res.impl_id); | |
7d2ed9ac | 5283 | |
acdeb69d CL |
5284 | out_server_owner: |
5285 | kfree(res.server_owner); | |
7d2ed9ac | 5286 | out_server_scope: |
abe9a6d5 WAA |
5287 | kfree(res.server_scope); |
5288 | out: | |
177313f1 | 5289 | if (clp->cl_implid != NULL) |
7d2ed9ac WAA |
5290 | dprintk("%s: Server Implementation ID: " |
5291 | "domain: %s, name: %s, date: %llu,%u\n", | |
59155546 CL |
5292 | __func__, clp->cl_implid->domain, clp->cl_implid->name, |
5293 | clp->cl_implid->date.seconds, | |
5294 | clp->cl_implid->date.nseconds); | |
99fe60d0 BH |
5295 | dprintk("<-- %s status= %d\n", __func__, status); |
5296 | return status; | |
5297 | } | |
5298 | ||
66245539 TM |
5299 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5300 | struct rpc_cred *cred) | |
5301 | { | |
5302 | struct rpc_message msg = { | |
5303 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5304 | .rpc_argp = clp, | |
5305 | .rpc_cred = cred, | |
5306 | }; | |
5307 | int status; | |
5308 | ||
5309 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5310 | if (status) | |
02c67525 | 5311 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5312 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5313 | return status; | |
5314 | } | |
5315 | ||
5316 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5317 | struct rpc_cred *cred) | |
5318 | { | |
5319 | unsigned int loop; | |
5320 | int ret; | |
5321 | ||
5322 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5323 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5324 | switch (ret) { | |
5325 | case -NFS4ERR_DELAY: | |
5326 | case -NFS4ERR_CLIENTID_BUSY: | |
5327 | ssleep(1); | |
5328 | break; | |
5329 | default: | |
5330 | return ret; | |
5331 | } | |
5332 | } | |
5333 | return 0; | |
5334 | } | |
5335 | ||
5336 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5337 | { | |
5338 | struct rpc_cred *cred; | |
5339 | int ret = 0; | |
5340 | ||
5341 | if (clp->cl_mvops->minor_version < 1) | |
5342 | goto out; | |
5343 | if (clp->cl_exchange_flags == 0) | |
5344 | goto out; | |
5345 | cred = nfs4_get_exchange_id_cred(clp); | |
5346 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5347 | if (cred) | |
5348 | put_rpccred(cred); | |
5349 | switch (ret) { | |
5350 | case 0: | |
5351 | case -NFS4ERR_STALE_CLIENTID: | |
5352 | clp->cl_exchange_flags = 0; | |
5353 | } | |
5354 | out: | |
5355 | return ret; | |
5356 | } | |
5357 | ||
2050f0cc AA |
5358 | struct nfs4_get_lease_time_data { |
5359 | struct nfs4_get_lease_time_args *args; | |
5360 | struct nfs4_get_lease_time_res *res; | |
5361 | struct nfs_client *clp; | |
5362 | }; | |
5363 | ||
5364 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5365 | void *calldata) | |
5366 | { | |
5367 | int ret; | |
5368 | struct nfs4_get_lease_time_data *data = | |
5369 | (struct nfs4_get_lease_time_data *)calldata; | |
5370 | ||
5371 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5372 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5373 | /* just setup sequence, do not trigger session recovery |
5374 | since we're invoked within one */ | |
5375 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5376 | &data->args->la_seq_args, |
9d12b216 | 5377 | &data->res->lr_seq_res, task); |
2050f0cc AA |
5378 | |
5379 | BUG_ON(ret == -EAGAIN); | |
5380 | rpc_call_start(task); | |
5381 | dprintk("<-- %s\n", __func__); | |
5382 | } | |
5383 | ||
5384 | /* | |
5385 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5386 | * from sequence operation or clientid errors. | |
5387 | */ | |
5388 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5389 | { | |
5390 | struct nfs4_get_lease_time_data *data = | |
5391 | (struct nfs4_get_lease_time_data *)calldata; | |
5392 | ||
5393 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5394 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5395 | return; | |
2050f0cc AA |
5396 | switch (task->tk_status) { |
5397 | case -NFS4ERR_DELAY: | |
5398 | case -NFS4ERR_GRACE: | |
5399 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5400 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5401 | task->tk_status = 0; | |
a8a4ae3a AA |
5402 | /* fall through */ |
5403 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5404 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5405 | return; |
5406 | } | |
2050f0cc AA |
5407 | dprintk("<-- %s\n", __func__); |
5408 | } | |
5409 | ||
17280175 | 5410 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5411 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5412 | .rpc_call_done = nfs4_get_lease_time_done, | |
5413 | }; | |
5414 | ||
5415 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5416 | { | |
5417 | struct rpc_task *task; | |
5418 | struct nfs4_get_lease_time_args args; | |
5419 | struct nfs4_get_lease_time_res res = { | |
5420 | .lr_fsinfo = fsinfo, | |
5421 | }; | |
5422 | struct nfs4_get_lease_time_data data = { | |
5423 | .args = &args, | |
5424 | .res = &res, | |
5425 | .clp = clp, | |
5426 | }; | |
5427 | struct rpc_message msg = { | |
5428 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5429 | .rpc_argp = &args, | |
5430 | .rpc_resp = &res, | |
5431 | }; | |
5432 | struct rpc_task_setup task_setup = { | |
5433 | .rpc_client = clp->cl_rpcclient, | |
5434 | .rpc_message = &msg, | |
5435 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5436 | .callback_data = &data, |
5437 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5438 | }; |
5439 | int status; | |
5440 | ||
9d12b216 | 5441 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5442 | dprintk("--> %s\n", __func__); |
5443 | task = rpc_run_task(&task_setup); | |
5444 | ||
5445 | if (IS_ERR(task)) | |
5446 | status = PTR_ERR(task); | |
5447 | else { | |
5448 | status = task->tk_status; | |
5449 | rpc_put_task(task); | |
5450 | } | |
5451 | dprintk("<-- %s return %d\n", __func__, status); | |
5452 | ||
5453 | return status; | |
5454 | } | |
5455 | ||
f86f36a6 TM |
5456 | static struct nfs4_slot *nfs4_alloc_slots(u32 max_slots, gfp_t gfp_flags) |
5457 | { | |
5458 | return kcalloc(max_slots, sizeof(struct nfs4_slot), gfp_flags); | |
5459 | } | |
5460 | ||
5461 | static void nfs4_add_and_init_slots(struct nfs4_slot_table *tbl, | |
5462 | struct nfs4_slot *new, | |
5463 | u32 max_slots, | |
5464 | u32 ivalue) | |
5465 | { | |
5466 | struct nfs4_slot *old = NULL; | |
5467 | u32 i; | |
5468 | ||
5469 | spin_lock(&tbl->slot_tbl_lock); | |
5470 | if (new) { | |
5471 | old = tbl->slots; | |
5472 | tbl->slots = new; | |
5473 | tbl->max_slots = max_slots; | |
5474 | } | |
5475 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5476 | for (i = 0; i < tbl->max_slots; i++) | |
5477 | tbl->slots[i].seq_nr = ivalue; | |
5478 | spin_unlock(&tbl->slot_tbl_lock); | |
5479 | kfree(old); | |
5480 | } | |
5481 | ||
b73dafa7 | 5482 | /* |
f86f36a6 | 5483 | * (re)Initialise a slot table |
b73dafa7 | 5484 | */ |
f86f36a6 TM |
5485 | static int nfs4_realloc_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5486 | u32 ivalue) | |
ac72b7b3 | 5487 | { |
104aeba4 | 5488 | struct nfs4_slot *new = NULL; |
f86f36a6 | 5489 | int ret = -ENOMEM; |
ac72b7b3 | 5490 | |
104aeba4 AA |
5491 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5492 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5493 | |
104aeba4 AA |
5494 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5495 | if (max_reqs != tbl->max_slots) { | |
f86f36a6 | 5496 | new = nfs4_alloc_slots(max_reqs, GFP_NOFS); |
104aeba4 AA |
5497 | if (!new) |
5498 | goto out; | |
104aeba4 | 5499 | } |
f86f36a6 TM |
5500 | ret = 0; |
5501 | ||
5502 | nfs4_add_and_init_slots(tbl, new, max_reqs, ivalue); | |
ac72b7b3 AA |
5503 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, |
5504 | tbl, tbl->slots, tbl->max_slots); | |
5505 | out: | |
5506 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5507 | return ret; | |
5508 | } | |
5509 | ||
f8625a6a RL |
5510 | /* Destroy the slot table */ |
5511 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5512 | { | |
5513 | if (session->fc_slot_table.slots != NULL) { | |
5514 | kfree(session->fc_slot_table.slots); | |
5515 | session->fc_slot_table.slots = NULL; | |
5516 | } | |
5517 | if (session->bc_slot_table.slots != NULL) { | |
5518 | kfree(session->bc_slot_table.slots); | |
5519 | session->bc_slot_table.slots = NULL; | |
5520 | } | |
5521 | return; | |
5522 | } | |
5523 | ||
050047ce | 5524 | /* |
aacd5537 | 5525 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5526 | */ |
aacd5537 | 5527 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5528 | { |
f26468fb | 5529 | struct nfs4_slot_table *tbl; |
aacd5537 | 5530 | int status; |
050047ce | 5531 | |
aacd5537 AA |
5532 | dprintk("--> %s\n", __func__); |
5533 | /* Fore channel */ | |
5534 | tbl = &ses->fc_slot_table; | |
f86f36a6 TM |
5535 | status = nfs4_realloc_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5536 | if (status) /* -ENOMEM */ | |
5537 | return status; | |
aacd5537 AA |
5538 | /* Back channel */ |
5539 | tbl = &ses->bc_slot_table; | |
f86f36a6 TM |
5540 | status = nfs4_realloc_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
5541 | if (status && tbl->slots == NULL) | |
5542 | /* Fore and back channel share a connection so get | |
5543 | * both slot tables or neither */ | |
5544 | nfs4_destroy_slot_tables(ses); | |
f8625a6a | 5545 | return status; |
557134a3 AA |
5546 | } |
5547 | ||
5548 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5549 | { | |
5550 | struct nfs4_session *session; | |
5551 | struct nfs4_slot_table *tbl; | |
5552 | ||
8535b2be | 5553 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5554 | if (!session) |
5555 | return NULL; | |
76db6d95 | 5556 | |
557134a3 | 5557 | tbl = &session->fc_slot_table; |
45d43c29 | 5558 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5559 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5560 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5561 | init_completion(&tbl->complete); |
f8625a6a RL |
5562 | |
5563 | tbl = &session->bc_slot_table; | |
45d43c29 | 5564 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5565 | spin_lock_init(&tbl->slot_tbl_lock); |
5566 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5567 | init_completion(&tbl->complete); |
f8625a6a | 5568 | |
1055d76d TM |
5569 | session->session_state = 1<<NFS4_SESSION_INITING; |
5570 | ||
557134a3 AA |
5571 | session->clp = clp; |
5572 | return session; | |
5573 | } | |
5574 | ||
5575 | void nfs4_destroy_session(struct nfs4_session *session) | |
5576 | { | |
2446ab60 | 5577 | struct rpc_xprt *xprt; |
848f5bda | 5578 | struct rpc_cred *cred; |
2446ab60 | 5579 | |
848f5bda TM |
5580 | cred = nfs4_get_exchange_id_cred(session->clp); |
5581 | nfs4_proc_destroy_session(session, cred); | |
5582 | if (cred) | |
5583 | put_rpccred(cred); | |
2446ab60 TM |
5584 | |
5585 | rcu_read_lock(); | |
5586 | xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); | |
5587 | rcu_read_unlock(); | |
5a0ffe54 | 5588 | dprintk("%s Destroy backchannel for xprt %p\n", |
2446ab60 TM |
5589 | __func__, xprt); |
5590 | xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5591 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5592 | kfree(session); |
5593 | } | |
5594 | ||
fc931582 AA |
5595 | /* |
5596 | * Initialize the values to be used by the client in CREATE_SESSION | |
5597 | * If nfs4_init_session set the fore channel request and response sizes, | |
5598 | * use them. | |
5599 | * | |
5600 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5601 | * always set csa_cachethis to FALSE because the current implementation | |
5602 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5603 | */ | |
5604 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5605 | { | |
5606 | struct nfs4_session *session = args->client->cl_session; | |
5607 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5608 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5609 | ||
5610 | if (mxrqst_sz == 0) | |
5611 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5612 | if (mxresp_sz == 0) | |
5613 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5614 | /* Fore channel attributes */ | |
fc931582 AA |
5615 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5616 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5617 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5618 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5619 | |
5620 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5621 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5622 | __func__, |
5623 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5624 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5625 | |
5626 | /* Back channel attributes */ | |
fc931582 AA |
5627 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5628 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5629 | args->bc_attrs.max_resp_sz_cached = 0; | |
5630 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5631 | args->bc_attrs.max_reqs = 1; | |
5632 | ||
5633 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5634 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5635 | __func__, | |
5636 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5637 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5638 | args->bc_attrs.max_reqs); | |
5639 | } | |
5640 | ||
43c2e885 | 5641 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5642 | { |
43c2e885 BF |
5643 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5644 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5645 | ||
43c2e885 BF |
5646 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5647 | return -EINVAL; | |
5648 | /* | |
5649 | * Our requested max_ops is the minimum we need; we're not | |
5650 | * prepared to break up compounds into smaller pieces than that. | |
5651 | * So, no point even trying to continue if the server won't | |
5652 | * cooperate: | |
5653 | */ | |
5654 | if (rcvd->max_ops < sent->max_ops) | |
5655 | return -EINVAL; | |
5656 | if (rcvd->max_reqs == 0) | |
5657 | return -EINVAL; | |
b4b9a0c1 VG |
5658 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5659 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5660 | return 0; |
8d35301d AA |
5661 | } |
5662 | ||
43c2e885 BF |
5663 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5664 | { | |
5665 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5666 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5667 | |
43c2e885 BF |
5668 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5669 | return -EINVAL; | |
5670 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5671 | return -EINVAL; | |
5672 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5673 | return -EINVAL; | |
5674 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5675 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5676 | return -EINVAL; |
b4b9a0c1 | 5677 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5678 | return -EINVAL; |
5679 | return 0; | |
5680 | } | |
8d35301d | 5681 | |
8d35301d AA |
5682 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5683 | struct nfs4_session *session) | |
5684 | { | |
43c2e885 | 5685 | int ret; |
8d35301d | 5686 | |
43c2e885 BF |
5687 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5688 | if (ret) | |
5689 | return ret; | |
5690 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5691 | } |
5692 | ||
848f5bda TM |
5693 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5694 | struct rpc_cred *cred) | |
fc931582 AA |
5695 | { |
5696 | struct nfs4_session *session = clp->cl_session; | |
5697 | struct nfs41_create_session_args args = { | |
5698 | .client = clp, | |
5699 | .cb_program = NFS4_CALLBACK, | |
5700 | }; | |
5701 | struct nfs41_create_session_res res = { | |
5702 | .client = clp, | |
5703 | }; | |
5704 | struct rpc_message msg = { | |
5705 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5706 | .rpc_argp = &args, | |
5707 | .rpc_resp = &res, | |
848f5bda | 5708 | .rpc_cred = cred, |
fc931582 AA |
5709 | }; |
5710 | int status; | |
5711 | ||
5712 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5713 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5714 | |
1bd714f2 | 5715 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5716 | |
8d35301d AA |
5717 | if (!status) |
5718 | /* Verify the session's negotiated channel_attrs values */ | |
5719 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5720 | if (!status) { |
5721 | /* Increment the clientid slot sequence id */ | |
5722 | clp->cl_seqid++; | |
5723 | } | |
5724 | ||
5725 | return status; | |
5726 | } | |
5727 | ||
5728 | /* | |
5729 | * Issues a CREATE_SESSION operation to the server. | |
5730 | * It is the responsibility of the caller to verify the session is | |
5731 | * expired before calling this routine. | |
5732 | */ | |
848f5bda | 5733 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5734 | { |
5735 | int status; | |
5736 | unsigned *ptr; | |
fc931582 AA |
5737 | struct nfs4_session *session = clp->cl_session; |
5738 | ||
5739 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5740 | ||
848f5bda | 5741 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5742 | if (status) |
5743 | goto out; | |
5744 | ||
aacd5537 AA |
5745 | /* Init or reset the session slot tables */ |
5746 | status = nfs4_setup_session_slot_tables(session); | |
5747 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5748 | if (status) |
5749 | goto out; | |
5750 | ||
5751 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5752 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5753 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5754 | out: |
5755 | dprintk("<-- %s\n", __func__); | |
5756 | return status; | |
5757 | } | |
5758 | ||
0f3e66c6 AA |
5759 | /* |
5760 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5761 | * The caller must serialize access to this routine. | |
5762 | */ | |
848f5bda TM |
5763 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5764 | struct rpc_cred *cred) | |
0f3e66c6 | 5765 | { |
848f5bda TM |
5766 | struct rpc_message msg = { |
5767 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5768 | .rpc_argp = session, | |
5769 | .rpc_cred = cred, | |
5770 | }; | |
0f3e66c6 | 5771 | int status = 0; |
0f3e66c6 AA |
5772 | |
5773 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5774 | ||
5775 | /* session is still being setup */ | |
5776 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5777 | return status; | |
5778 | ||
1bd714f2 | 5779 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5780 | |
5781 | if (status) | |
08106ac7 | 5782 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5783 | "Session has been destroyed regardless...\n", status); |
5784 | ||
5785 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5786 | return status; | |
5787 | } | |
5788 | ||
7b38c368 TM |
5789 | /* |
5790 | * With sessions, the client is not marked ready until after a | |
5791 | * successful EXCHANGE_ID and CREATE_SESSION. | |
5792 | * | |
5793 | * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate | |
5794 | * other versions of NFS can be tried. | |
5795 | */ | |
5796 | static int nfs41_check_session_ready(struct nfs_client *clp) | |
5797 | { | |
5798 | int ret; | |
5799 | ||
5800 | if (clp->cl_cons_state == NFS_CS_SESSION_INITING) { | |
5801 | ret = nfs4_client_recover_expired_lease(clp); | |
5802 | if (ret) | |
5803 | return ret; | |
5804 | } | |
5805 | if (clp->cl_cons_state < NFS_CS_READY) | |
5806 | return -EPROTONOSUPPORT; | |
54ac471c | 5807 | smp_rmb(); |
7b38c368 TM |
5808 | return 0; |
5809 | } | |
5810 | ||
fccba804 TM |
5811 | int nfs4_init_session(struct nfs_server *server) |
5812 | { | |
5813 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5814 | struct nfs4_session *session; |
68bf05ef | 5815 | unsigned int rsize, wsize; |
fccba804 TM |
5816 | |
5817 | if (!nfs4_has_session(clp)) | |
5818 | return 0; | |
5819 | ||
1055d76d | 5820 | session = clp->cl_session; |
7b38c368 TM |
5821 | spin_lock(&clp->cl_lock); |
5822 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
1055d76d | 5823 | |
7b38c368 TM |
5824 | rsize = server->rsize; |
5825 | if (rsize == 0) | |
5826 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5827 | wsize = server->wsize; | |
5828 | if (wsize == 0) | |
5829 | wsize = NFS_MAX_FILE_IO_SIZE; | |
68bf05ef | 5830 | |
7b38c368 TM |
5831 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5832 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
5833 | } | |
5834 | spin_unlock(&clp->cl_lock); | |
2449ea2e | 5835 | |
7b38c368 | 5836 | return nfs41_check_session_ready(clp); |
fccba804 TM |
5837 | } |
5838 | ||
7b38c368 | 5839 | int nfs4_init_ds_session(struct nfs_client *clp, unsigned long lease_time) |
d83217c1 AA |
5840 | { |
5841 | struct nfs4_session *session = clp->cl_session; | |
5842 | int ret; | |
5843 | ||
7b38c368 TM |
5844 | spin_lock(&clp->cl_lock); |
5845 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
5846 | /* | |
5847 | * Do not set NFS_CS_CHECK_LEASE_TIME instead set the | |
5848 | * DS lease to be equal to the MDS lease. | |
5849 | */ | |
5850 | clp->cl_lease_time = lease_time; | |
5851 | clp->cl_last_renewal = jiffies; | |
5852 | } | |
5853 | spin_unlock(&clp->cl_lock); | |
d83217c1 | 5854 | |
7b38c368 TM |
5855 | ret = nfs41_check_session_ready(clp); |
5856 | if (ret) | |
5857 | return ret; | |
5858 | /* Test for the DS role */ | |
5859 | if (!is_ds_client(clp)) | |
5860 | return -ENODEV; | |
5861 | return 0; | |
d83217c1 AA |
5862 | } |
5863 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5864 | ||
5865 | ||
fc01cea9 AA |
5866 | /* |
5867 | * Renew the cl_session lease. | |
5868 | */ | |
d5f8d3fe TM |
5869 | struct nfs4_sequence_data { |
5870 | struct nfs_client *clp; | |
5871 | struct nfs4_sequence_args args; | |
5872 | struct nfs4_sequence_res res; | |
5873 | }; | |
5874 | ||
dc96aef9 AB |
5875 | static void nfs41_sequence_release(void *data) |
5876 | { | |
d5f8d3fe TM |
5877 | struct nfs4_sequence_data *calldata = data; |
5878 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5879 | |
7135840f AB |
5880 | if (atomic_read(&clp->cl_count) > 1) |
5881 | nfs4_schedule_state_renewal(clp); | |
5882 | nfs_put_client(clp); | |
d5f8d3fe | 5883 | kfree(calldata); |
dc96aef9 AB |
5884 | } |
5885 | ||
aa5190d0 TM |
5886 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5887 | { | |
5888 | switch(task->tk_status) { | |
5889 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5890 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5891 | return -EAGAIN; | |
5892 | default: | |
0400a6b0 | 5893 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5894 | } |
5895 | return 0; | |
5896 | } | |
5897 | ||
dc96aef9 | 5898 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5899 | { |
d5f8d3fe TM |
5900 | struct nfs4_sequence_data *calldata = data; |
5901 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5902 | |
14516c3a TM |
5903 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5904 | return; | |
fc01cea9 AA |
5905 | |
5906 | if (task->tk_status < 0) { | |
5907 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5908 | if (atomic_read(&clp->cl_count) == 1) |
5909 | goto out; | |
fc01cea9 | 5910 | |
aa5190d0 TM |
5911 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5912 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5913 | return; |
5914 | } | |
5915 | } | |
fc01cea9 | 5916 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5917 | out: |
fc01cea9 AA |
5918 | dprintk("<-- %s\n", __func__); |
5919 | } | |
5920 | ||
5921 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5922 | { | |
d5f8d3fe TM |
5923 | struct nfs4_sequence_data *calldata = data; |
5924 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5925 | struct nfs4_sequence_args *args; |
5926 | struct nfs4_sequence_res *res; | |
5927 | ||
fc01cea9 AA |
5928 | args = task->tk_msg.rpc_argp; |
5929 | res = task->tk_msg.rpc_resp; | |
5930 | ||
9d12b216 | 5931 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
5932 | return; |
5933 | rpc_call_start(task); | |
5934 | } | |
5935 | ||
5936 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5937 | .rpc_call_done = nfs41_sequence_call_done, | |
5938 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5939 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5940 | }; |
5941 | ||
71ac6da9 | 5942 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5943 | { |
d5f8d3fe | 5944 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5945 | struct rpc_message msg = { |
5946 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5947 | .rpc_cred = cred, | |
5948 | }; | |
71ac6da9 TM |
5949 | struct rpc_task_setup task_setup_data = { |
5950 | .rpc_client = clp->cl_rpcclient, | |
5951 | .rpc_message = &msg, | |
5952 | .callback_ops = &nfs41_sequence_ops, | |
5953 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5954 | }; | |
fc01cea9 | 5955 | |
7135840f | 5956 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5957 | return ERR_PTR(-EIO); |
dfb4f309 | 5958 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5959 | if (calldata == NULL) { |
7135840f | 5960 | nfs_put_client(clp); |
71ac6da9 | 5961 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5962 | } |
9d12b216 | 5963 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
5964 | msg.rpc_argp = &calldata->args; |
5965 | msg.rpc_resp = &calldata->res; | |
5966 | calldata->clp = clp; | |
71ac6da9 | 5967 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5968 | |
71ac6da9 TM |
5969 | return rpc_run_task(&task_setup_data); |
5970 | } | |
5971 | ||
2f60ea6b | 5972 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5973 | { |
5974 | struct rpc_task *task; | |
5975 | int ret = 0; | |
5976 | ||
2f60ea6b TM |
5977 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5978 | return 0; | |
71ac6da9 TM |
5979 | task = _nfs41_proc_sequence(clp, cred); |
5980 | if (IS_ERR(task)) | |
5981 | ret = PTR_ERR(task); | |
5982 | else | |
bf294b41 | 5983 | rpc_put_task_async(task); |
71ac6da9 TM |
5984 | dprintk("<-- %s status=%d\n", __func__, ret); |
5985 | return ret; | |
5986 | } | |
5987 | ||
5988 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5989 | { | |
5990 | struct rpc_task *task; | |
5991 | int ret; | |
5992 | ||
5993 | task = _nfs41_proc_sequence(clp, cred); | |
5994 | if (IS_ERR(task)) { | |
5995 | ret = PTR_ERR(task); | |
5996 | goto out; | |
5997 | } | |
5998 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5999 | if (!ret) { |
6000 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6001 | ||
6002 | if (task->tk_status == 0) | |
6003 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6004 | ret = task->tk_status; |
b4410c2f | 6005 | } |
71ac6da9 TM |
6006 | rpc_put_task(task); |
6007 | out: | |
6008 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6009 | return ret; | |
fc01cea9 AA |
6010 | } |
6011 | ||
fce5c838 RL |
6012 | struct nfs4_reclaim_complete_data { |
6013 | struct nfs_client *clp; | |
6014 | struct nfs41_reclaim_complete_args arg; | |
6015 | struct nfs41_reclaim_complete_res res; | |
6016 | }; | |
6017 | ||
6018 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6019 | { | |
6020 | struct nfs4_reclaim_complete_data *calldata = data; | |
6021 | ||
b257957e | 6022 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
6023 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
6024 | &calldata->arg.seq_args, | |
9d12b216 | 6025 | &calldata->res.seq_res, task)) |
fce5c838 RL |
6026 | return; |
6027 | ||
6028 | rpc_call_start(task); | |
6029 | } | |
6030 | ||
aa5190d0 TM |
6031 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6032 | { | |
6033 | switch(task->tk_status) { | |
6034 | case 0: | |
6035 | case -NFS4ERR_COMPLETE_ALREADY: | |
6036 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6037 | break; | |
6038 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6039 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6040 | /* fall through */ |
6041 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6042 | return -EAGAIN; |
6043 | default: | |
0400a6b0 | 6044 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6045 | } |
6046 | return 0; | |
6047 | } | |
6048 | ||
fce5c838 RL |
6049 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6050 | { | |
6051 | struct nfs4_reclaim_complete_data *calldata = data; | |
6052 | struct nfs_client *clp = calldata->clp; | |
6053 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6054 | ||
6055 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6056 | if (!nfs41_sequence_done(task, res)) |
6057 | return; | |
fce5c838 | 6058 | |
aa5190d0 TM |
6059 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6060 | rpc_restart_call_prepare(task); | |
6061 | return; | |
6062 | } | |
fce5c838 RL |
6063 | dprintk("<-- %s\n", __func__); |
6064 | } | |
6065 | ||
6066 | static void nfs4_free_reclaim_complete_data(void *data) | |
6067 | { | |
6068 | struct nfs4_reclaim_complete_data *calldata = data; | |
6069 | ||
6070 | kfree(calldata); | |
6071 | } | |
6072 | ||
6073 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6074 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6075 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6076 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6077 | }; | |
6078 | ||
6079 | /* | |
6080 | * Issue a global reclaim complete. | |
6081 | */ | |
6082 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
6083 | { | |
6084 | struct nfs4_reclaim_complete_data *calldata; | |
6085 | struct rpc_task *task; | |
6086 | struct rpc_message msg = { | |
6087 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
6088 | }; | |
6089 | struct rpc_task_setup task_setup_data = { | |
6090 | .rpc_client = clp->cl_rpcclient, | |
6091 | .rpc_message = &msg, | |
6092 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6093 | .flags = RPC_TASK_ASYNC, | |
6094 | }; | |
6095 | int status = -ENOMEM; | |
6096 | ||
6097 | dprintk("--> %s\n", __func__); | |
8535b2be | 6098 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6099 | if (calldata == NULL) |
6100 | goto out; | |
6101 | calldata->clp = clp; | |
6102 | calldata->arg.one_fs = 0; | |
fce5c838 | 6103 | |
9d12b216 | 6104 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
6105 | msg.rpc_argp = &calldata->arg; |
6106 | msg.rpc_resp = &calldata->res; | |
6107 | task_setup_data.callback_data = calldata; | |
6108 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6109 | if (IS_ERR(task)) { |
fce5c838 | 6110 | status = PTR_ERR(task); |
acf82b85 DC |
6111 | goto out; |
6112 | } | |
c34c32ea AA |
6113 | status = nfs4_wait_for_completion_rpc_task(task); |
6114 | if (status == 0) | |
6115 | status = task->tk_status; | |
fce5c838 | 6116 | rpc_put_task(task); |
acf82b85 | 6117 | return 0; |
fce5c838 RL |
6118 | out: |
6119 | dprintk("<-- %s status=%d\n", __func__, status); | |
6120 | return status; | |
6121 | } | |
b1f69b75 AA |
6122 | |
6123 | static void | |
6124 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6125 | { | |
6126 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6127 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
6128 | |
6129 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6130 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6131 | * right now covering the LAYOUTGET we are about to send. | |
6132 | * However, that is not so catastrophic, and there seems | |
6133 | * to be no way to prevent it completely. | |
6134 | */ | |
b1f69b75 | 6135 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 6136 | &lgp->res.seq_res, task)) |
b1f69b75 | 6137 | return; |
cf7d63f1 FI |
6138 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6139 | NFS_I(lgp->args.inode)->layout, | |
6140 | lgp->args.ctx->state)) { | |
6141 | rpc_exit(task, NFS4_OK); | |
6142 | return; | |
6143 | } | |
b1f69b75 AA |
6144 | rpc_call_start(task); |
6145 | } | |
6146 | ||
6147 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6148 | { | |
6149 | struct nfs4_layoutget *lgp = calldata; | |
6150 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
6151 | ||
6152 | dprintk("--> %s\n", __func__); | |
6153 | ||
6154 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
6155 | return; | |
6156 | ||
6157 | switch (task->tk_status) { | |
6158 | case 0: | |
6159 | break; | |
6160 | case -NFS4ERR_LAYOUTTRYLATER: | |
6161 | case -NFS4ERR_RECALLCONFLICT: | |
6162 | task->tk_status = -NFS4ERR_DELAY; | |
6163 | /* Fall through */ | |
6164 | default: | |
6165 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6166 | rpc_restart_call_prepare(task); | |
6167 | return; | |
6168 | } | |
6169 | } | |
b1f69b75 AA |
6170 | dprintk("<-- %s\n", __func__); |
6171 | } | |
6172 | ||
6173 | static void nfs4_layoutget_release(void *calldata) | |
6174 | { | |
6175 | struct nfs4_layoutget *lgp = calldata; | |
6176 | ||
6177 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
6178 | put_nfs_open_context(lgp->args.ctx); |
6179 | kfree(calldata); | |
6180 | dprintk("<-- %s\n", __func__); | |
6181 | } | |
6182 | ||
6183 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6184 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6185 | .rpc_call_done = nfs4_layoutget_done, | |
6186 | .rpc_release = nfs4_layoutget_release, | |
6187 | }; | |
6188 | ||
6189 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
6190 | { | |
6191 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
6192 | struct rpc_task *task; | |
6193 | struct rpc_message msg = { | |
6194 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6195 | .rpc_argp = &lgp->args, | |
6196 | .rpc_resp = &lgp->res, | |
6197 | }; | |
6198 | struct rpc_task_setup task_setup_data = { | |
6199 | .rpc_client = server->client, | |
6200 | .rpc_message = &msg, | |
6201 | .callback_ops = &nfs4_layoutget_call_ops, | |
6202 | .callback_data = lgp, | |
6203 | .flags = RPC_TASK_ASYNC, | |
6204 | }; | |
6205 | int status = 0; | |
6206 | ||
6207 | dprintk("--> %s\n", __func__); | |
6208 | ||
35124a09 | 6209 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6210 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6211 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
6212 | task = rpc_run_task(&task_setup_data); |
6213 | if (IS_ERR(task)) | |
6214 | return PTR_ERR(task); | |
6215 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
6216 | if (status == 0) |
6217 | status = task->tk_status; | |
6218 | if (status == 0) | |
6219 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
6220 | rpc_put_task(task); |
6221 | dprintk("<-- %s status=%d\n", __func__, status); | |
6222 | return status; | |
6223 | } | |
6224 | ||
cbe82603 BH |
6225 | static void |
6226 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6227 | { | |
6228 | struct nfs4_layoutreturn *lrp = calldata; | |
6229 | ||
6230 | dprintk("--> %s\n", __func__); | |
6231 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 6232 | &lrp->res.seq_res, task)) |
cbe82603 BH |
6233 | return; |
6234 | rpc_call_start(task); | |
6235 | } | |
6236 | ||
6237 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6238 | { | |
6239 | struct nfs4_layoutreturn *lrp = calldata; | |
6240 | struct nfs_server *server; | |
a56aaa02 | 6241 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6242 | |
6243 | dprintk("--> %s\n", __func__); | |
6244 | ||
6245 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
6246 | return; | |
6247 | ||
6248 | server = NFS_SERVER(lrp->args.inode); | |
6249 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6250 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6251 | return; |
6252 | } | |
a2e1d4f2 | 6253 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 6254 | if (task->tk_status == 0) { |
cbe82603 | 6255 | if (lrp->res.lrs_present) { |
cbe82603 | 6256 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
6257 | } else |
6258 | BUG_ON(!list_empty(&lo->plh_segs)); | |
6259 | } | |
a2e1d4f2 FI |
6260 | lo->plh_block_lgets--; |
6261 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
6262 | dprintk("<-- %s\n", __func__); |
6263 | } | |
6264 | ||
6265 | static void nfs4_layoutreturn_release(void *calldata) | |
6266 | { | |
6267 | struct nfs4_layoutreturn *lrp = calldata; | |
6268 | ||
6269 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 6270 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6271 | kfree(calldata); |
6272 | dprintk("<-- %s\n", __func__); | |
6273 | } | |
6274 | ||
6275 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6276 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6277 | .rpc_call_done = nfs4_layoutreturn_done, | |
6278 | .rpc_release = nfs4_layoutreturn_release, | |
6279 | }; | |
6280 | ||
6281 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6282 | { | |
6283 | struct rpc_task *task; | |
6284 | struct rpc_message msg = { | |
6285 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6286 | .rpc_argp = &lrp->args, | |
6287 | .rpc_resp = &lrp->res, | |
6288 | }; | |
6289 | struct rpc_task_setup task_setup_data = { | |
6290 | .rpc_client = lrp->clp->cl_rpcclient, | |
6291 | .rpc_message = &msg, | |
6292 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6293 | .callback_data = lrp, | |
6294 | }; | |
6295 | int status; | |
6296 | ||
6297 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6298 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6299 | task = rpc_run_task(&task_setup_data); |
6300 | if (IS_ERR(task)) | |
6301 | return PTR_ERR(task); | |
6302 | status = task->tk_status; | |
6303 | dprintk("<-- %s status=%d\n", __func__, status); | |
6304 | rpc_put_task(task); | |
6305 | return status; | |
6306 | } | |
6307 | ||
7f11d8d3 AA |
6308 | /* |
6309 | * Retrieve the list of Data Server devices from the MDS. | |
6310 | */ | |
6311 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6312 | const struct nfs_fh *fh, | |
6313 | struct pnfs_devicelist *devlist) | |
6314 | { | |
6315 | struct nfs4_getdevicelist_args args = { | |
6316 | .fh = fh, | |
6317 | .layoutclass = server->pnfs_curr_ld->id, | |
6318 | }; | |
6319 | struct nfs4_getdevicelist_res res = { | |
6320 | .devlist = devlist, | |
6321 | }; | |
6322 | struct rpc_message msg = { | |
6323 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6324 | .rpc_argp = &args, | |
6325 | .rpc_resp = &res, | |
6326 | }; | |
6327 | int status; | |
6328 | ||
6329 | dprintk("--> %s\n", __func__); | |
6330 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6331 | &res.seq_res, 0); | |
6332 | dprintk("<-- %s status=%d\n", __func__, status); | |
6333 | return status; | |
6334 | } | |
6335 | ||
6336 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6337 | const struct nfs_fh *fh, | |
6338 | struct pnfs_devicelist *devlist) | |
6339 | { | |
6340 | struct nfs4_exception exception = { }; | |
6341 | int err; | |
6342 | ||
6343 | do { | |
6344 | err = nfs4_handle_exception(server, | |
6345 | _nfs4_getdevicelist(server, fh, devlist), | |
6346 | &exception); | |
6347 | } while (exception.retry); | |
6348 | ||
6349 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6350 | err, devlist->num_devs); | |
6351 | ||
6352 | return err; | |
6353 | } | |
6354 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6355 | ||
b1f69b75 AA |
6356 | static int |
6357 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6358 | { | |
6359 | struct nfs4_getdeviceinfo_args args = { | |
6360 | .pdev = pdev, | |
6361 | }; | |
6362 | struct nfs4_getdeviceinfo_res res = { | |
6363 | .pdev = pdev, | |
6364 | }; | |
6365 | struct rpc_message msg = { | |
6366 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6367 | .rpc_argp = &args, | |
6368 | .rpc_resp = &res, | |
6369 | }; | |
6370 | int status; | |
6371 | ||
6372 | dprintk("--> %s\n", __func__); | |
7c513058 | 6373 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6374 | dprintk("<-- %s status=%d\n", __func__, status); |
6375 | ||
6376 | return status; | |
6377 | } | |
6378 | ||
6379 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6380 | { | |
6381 | struct nfs4_exception exception = { }; | |
6382 | int err; | |
6383 | ||
6384 | do { | |
6385 | err = nfs4_handle_exception(server, | |
6386 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6387 | &exception); | |
6388 | } while (exception.retry); | |
6389 | return err; | |
6390 | } | |
6391 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6392 | ||
863a3c6c AA |
6393 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6394 | { | |
6395 | struct nfs4_layoutcommit_data *data = calldata; | |
6396 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6397 | ||
6398 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6399 | &data->res.seq_res, task)) |
863a3c6c AA |
6400 | return; |
6401 | rpc_call_start(task); | |
6402 | } | |
6403 | ||
6404 | static void | |
6405 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6406 | { | |
6407 | struct nfs4_layoutcommit_data *data = calldata; | |
6408 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6409 | ||
6410 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6411 | return; | |
6412 | ||
6413 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6414 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6415 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6416 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6417 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6418 | task->tk_status = 0; |
e59d27e0 TM |
6419 | break; |
6420 | case 0: | |
863a3c6c AA |
6421 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6422 | data->res.fattr); | |
e59d27e0 TM |
6423 | break; |
6424 | default: | |
6425 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6426 | rpc_restart_call_prepare(task); | |
6427 | return; | |
6428 | } | |
6429 | } | |
863a3c6c AA |
6430 | } |
6431 | ||
6432 | static void nfs4_layoutcommit_release(void *calldata) | |
6433 | { | |
6434 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6435 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6436 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6437 | |
db29c089 | 6438 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6439 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6440 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6441 | list_del_init(&lseg->pls_lc_list); | |
6442 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6443 | &lseg->pls_flags)) | |
6444 | put_lseg(lseg); | |
6445 | } | |
92407e75 PT |
6446 | |
6447 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6448 | smp_mb__after_clear_bit(); | |
6449 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6450 | ||
863a3c6c AA |
6451 | put_rpccred(data->cred); |
6452 | kfree(data); | |
6453 | } | |
6454 | ||
6455 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6456 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6457 | .rpc_call_done = nfs4_layoutcommit_done, | |
6458 | .rpc_release = nfs4_layoutcommit_release, | |
6459 | }; | |
6460 | ||
6461 | int | |
ef311537 | 6462 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6463 | { |
6464 | struct rpc_message msg = { | |
6465 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6466 | .rpc_argp = &data->args, | |
6467 | .rpc_resp = &data->res, | |
6468 | .rpc_cred = data->cred, | |
6469 | }; | |
6470 | struct rpc_task_setup task_setup_data = { | |
6471 | .task = &data->task, | |
6472 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6473 | .rpc_message = &msg, | |
6474 | .callback_ops = &nfs4_layoutcommit_ops, | |
6475 | .callback_data = data, | |
6476 | .flags = RPC_TASK_ASYNC, | |
6477 | }; | |
6478 | struct rpc_task *task; | |
6479 | int status = 0; | |
6480 | ||
6481 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6482 | "lbw: %llu inode %lu\n", | |
6483 | data->task.tk_pid, sync, | |
6484 | data->args.lastbytewritten, | |
6485 | data->args.inode->i_ino); | |
6486 | ||
9d12b216 | 6487 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6488 | task = rpc_run_task(&task_setup_data); |
6489 | if (IS_ERR(task)) | |
6490 | return PTR_ERR(task); | |
ef311537 | 6491 | if (sync == false) |
863a3c6c AA |
6492 | goto out; |
6493 | status = nfs4_wait_for_completion_rpc_task(task); | |
6494 | if (status != 0) | |
6495 | goto out; | |
6496 | status = task->tk_status; | |
6497 | out: | |
6498 | dprintk("%s: status %d\n", __func__, status); | |
6499 | rpc_put_task(task); | |
6500 | return status; | |
6501 | } | |
fca78d6d BS |
6502 | |
6503 | static int | |
6504 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6505 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6506 | { | |
6507 | struct nfs41_secinfo_no_name_args args = { | |
6508 | .style = SECINFO_STYLE_CURRENT_FH, | |
6509 | }; | |
6510 | struct nfs4_secinfo_res res = { | |
6511 | .flavors = flavors, | |
6512 | }; | |
6513 | struct rpc_message msg = { | |
6514 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6515 | .rpc_argp = &args, | |
6516 | .rpc_resp = &res, | |
6517 | }; | |
6518 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6519 | } | |
6520 | ||
6521 | static int | |
6522 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6523 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6524 | { | |
6525 | struct nfs4_exception exception = { }; | |
6526 | int err; | |
6527 | do { | |
6528 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6529 | switch (err) { | |
6530 | case 0: | |
6531 | case -NFS4ERR_WRONGSEC: | |
6532 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6533 | goto out; |
fca78d6d BS |
6534 | default: |
6535 | err = nfs4_handle_exception(server, err, &exception); | |
6536 | } | |
6537 | } while (exception.retry); | |
05e9cfb4 | 6538 | out: |
fca78d6d BS |
6539 | return err; |
6540 | } | |
6541 | ||
6542 | static int | |
6543 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6544 | struct nfs_fsinfo *info) | |
6545 | { | |
6546 | int err; | |
6547 | struct page *page; | |
6548 | rpc_authflavor_t flavor; | |
6549 | struct nfs4_secinfo_flavors *flavors; | |
6550 | ||
6551 | page = alloc_page(GFP_KERNEL); | |
6552 | if (!page) { | |
6553 | err = -ENOMEM; | |
6554 | goto out; | |
6555 | } | |
6556 | ||
6557 | flavors = page_address(page); | |
6558 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6559 | ||
6560 | /* | |
6561 | * Fall back on "guess and check" method if | |
6562 | * the server doesn't support SECINFO_NO_NAME | |
6563 | */ | |
6564 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6565 | err = nfs4_find_root_sec(server, fhandle, info); | |
6566 | goto out_freepage; | |
6567 | } | |
6568 | if (err) | |
6569 | goto out_freepage; | |
6570 | ||
6571 | flavor = nfs_find_best_sec(flavors); | |
6572 | if (err == 0) | |
6573 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6574 | ||
6575 | out_freepage: | |
6576 | put_page(page); | |
6577 | if (err == -EACCES) | |
6578 | return -EPERM; | |
6579 | out: | |
6580 | return err; | |
6581 | } | |
1cab0652 BS |
6582 | |
6583 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6584 | { |
6585 | int status; | |
6586 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6587 | .stateid = stateid, |
7d974794 BS |
6588 | }; |
6589 | struct nfs41_test_stateid_res res; | |
6590 | struct rpc_message msg = { | |
6591 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6592 | .rpc_argp = &args, | |
6593 | .rpc_resp = &res, | |
6594 | }; | |
1cab0652 | 6595 | |
9d12b216 | 6596 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 BS |
6597 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
6598 | ||
6599 | if (status == NFS_OK) | |
6600 | return res.status; | |
7d974794 BS |
6601 | return status; |
6602 | } | |
6603 | ||
1cab0652 | 6604 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6605 | { |
6606 | struct nfs4_exception exception = { }; | |
6607 | int err; | |
6608 | do { | |
6609 | err = nfs4_handle_exception(server, | |
1cab0652 | 6610 | _nfs41_test_stateid(server, stateid), |
7d974794 BS |
6611 | &exception); |
6612 | } while (exception.retry); | |
6613 | return err; | |
6614 | } | |
9aeda35f | 6615 | |
1cab0652 | 6616 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6617 | { |
9aeda35f | 6618 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6619 | .stateid = stateid, |
9aeda35f BS |
6620 | }; |
6621 | struct nfs41_free_stateid_res res; | |
6622 | struct rpc_message msg = { | |
6623 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6624 | .rpc_argp = &args, | |
6625 | .rpc_resp = &res, | |
6626 | }; | |
6627 | ||
9d12b216 TM |
6628 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
6629 | return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); | |
9aeda35f BS |
6630 | } |
6631 | ||
1cab0652 | 6632 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6633 | { |
6634 | struct nfs4_exception exception = { }; | |
6635 | int err; | |
6636 | do { | |
6637 | err = nfs4_handle_exception(server, | |
1cab0652 | 6638 | _nfs4_free_stateid(server, stateid), |
9aeda35f BS |
6639 | &exception); |
6640 | } while (exception.retry); | |
6641 | return err; | |
6642 | } | |
36281caa TM |
6643 | |
6644 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6645 | const nfs4_stateid *s2) | |
6646 | { | |
2d2f24ad | 6647 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6648 | return false; |
6649 | ||
2d2f24ad | 6650 | if (s1->seqid == s2->seqid) |
36281caa | 6651 | return true; |
2d2f24ad | 6652 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6653 | return true; |
6654 | ||
6655 | return false; | |
6656 | } | |
6657 | ||
557134a3 AA |
6658 | #endif /* CONFIG_NFS_V4_1 */ |
6659 | ||
36281caa TM |
6660 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6661 | const nfs4_stateid *s2) | |
6662 | { | |
f597c537 | 6663 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6664 | } |
6665 | ||
6666 | ||
17280175 | 6667 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6668 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6669 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6670 | .recover_open = nfs4_open_reclaim, |
6671 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6672 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6673 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6674 | }; |
6675 | ||
591d71cb | 6676 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6677 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6678 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6679 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6680 | .recover_open = nfs4_open_reclaim, | |
6681 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6682 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6683 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6684 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6685 | }; |
6686 | #endif /* CONFIG_NFS_V4_1 */ | |
6687 | ||
17280175 | 6688 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6689 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6690 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6691 | .recover_open = nfs4_open_expired, | |
6692 | .recover_lock = nfs4_lock_expired, | |
6693 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6694 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6695 | }; |
6696 | ||
6697 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6698 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6699 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6700 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6701 | .recover_open = nfs41_open_expired, |
6702 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6703 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6704 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6705 | }; |
591d71cb | 6706 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6707 | |
17280175 | 6708 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6709 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6710 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6711 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6712 | }; |
6713 | ||
6714 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6715 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6716 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6717 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6718 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6719 | }; |
6720 | #endif | |
6721 | ||
97dc1359 TM |
6722 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6723 | .minor_version = 0, | |
6724 | .call_sync = _nfs4_call_sync, | |
36281caa | 6725 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6726 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6727 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6728 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6729 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6730 | }; |
6731 | ||
6732 | #if defined(CONFIG_NFS_V4_1) | |
6733 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6734 | .minor_version = 1, | |
6735 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 6736 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6737 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6738 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6739 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6740 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6741 | }; |
6742 | #endif | |
6743 | ||
97dc1359 TM |
6744 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6745 | [0] = &nfs_v4_0_minor_ops, | |
6746 | #if defined(CONFIG_NFS_V4_1) | |
6747 | [1] = &nfs_v4_1_minor_ops, | |
6748 | #endif | |
6749 | }; | |
6750 | ||
92e1d5be | 6751 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6752 | .permission = nfs_permission, |
6753 | .getattr = nfs_getattr, | |
6754 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6755 | .getxattr = generic_getxattr, |
6756 | .setxattr = generic_setxattr, | |
6757 | .listxattr = generic_listxattr, | |
6758 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6759 | }; |
6760 | ||
509de811 | 6761 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6762 | .version = 4, /* protocol version */ |
6763 | .dentry_ops = &nfs4_dentry_operations, | |
6764 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6765 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6766 | .file_ops = &nfs4_file_operations, |
1da177e4 | 6767 | .getroot = nfs4_proc_get_root, |
281cad46 | 6768 | .submount = nfs4_submount, |
1da177e4 LT |
6769 | .getattr = nfs4_proc_getattr, |
6770 | .setattr = nfs4_proc_setattr, | |
6771 | .lookup = nfs4_proc_lookup, | |
6772 | .access = nfs4_proc_access, | |
6773 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6774 | .create = nfs4_proc_create, |
6775 | .remove = nfs4_proc_remove, | |
6776 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 6777 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
6778 | .unlink_done = nfs4_proc_unlink_done, |
6779 | .rename = nfs4_proc_rename, | |
d3d4152a | 6780 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 6781 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 6782 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
6783 | .link = nfs4_proc_link, |
6784 | .symlink = nfs4_proc_symlink, | |
6785 | .mkdir = nfs4_proc_mkdir, | |
6786 | .rmdir = nfs4_proc_remove, | |
6787 | .readdir = nfs4_proc_readdir, | |
6788 | .mknod = nfs4_proc_mknod, | |
6789 | .statfs = nfs4_proc_statfs, | |
6790 | .fsinfo = nfs4_proc_fsinfo, | |
6791 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6792 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6793 | .decode_dirent = nfs4_decode_dirent, |
6794 | .read_setup = nfs4_proc_read_setup, | |
ea7c3303 | 6795 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 6796 | .read_done = nfs4_read_done, |
1da177e4 | 6797 | .write_setup = nfs4_proc_write_setup, |
c6cb80d0 | 6798 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 6799 | .write_done = nfs4_write_done, |
1da177e4 | 6800 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 6801 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 6802 | .commit_done = nfs4_commit_done, |
1da177e4 | 6803 | .lock = nfs4_proc_lock, |
e50a1c2e | 6804 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6805 | .close_context = nfs4_close_context, |
2b484297 | 6806 | .open_context = nfs4_atomic_open, |
011e2a7f | 6807 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 6808 | .return_delegation = nfs4_inode_return_delegation, |
45a52a02 | 6809 | .init_client = nfs4_init_client, |
cdb7eced | 6810 | .free_client = nfs4_free_client, |
1da177e4 LT |
6811 | }; |
6812 | ||
64c2ce8b AK |
6813 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6814 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6815 | .list = nfs4_xattr_list_nfs4_acl, | |
6816 | .get = nfs4_xattr_get_nfs4_acl, | |
6817 | .set = nfs4_xattr_set_nfs4_acl, | |
6818 | }; | |
6819 | ||
6820 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6821 | &nfs4_xattr_nfs4_acl_handler, | |
6822 | NULL | |
6823 | }; | |
6824 | ||
ef159e91 TM |
6825 | module_param(max_session_slots, ushort, 0644); |
6826 | MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 " | |
6827 | "requests the client will negotiate"); | |
6828 | ||
1da177e4 LT |
6829 | /* |
6830 | * Local variables: | |
6831 | * c-basic-offset: 8 | |
6832 | * End: | |
6833 | */ |