Commit | Line | Data |
---|---|---|
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 | { |
f062eb6c | 1761 | struct nfs_server *server = NFS_SERVER(state->inode); |
eb64cf96 | 1762 | int status = -NFS4ERR_BAD_STATEID; |
f062eb6c | 1763 | |
b01dd1d8 BS |
1764 | if (state->flags & flags) { |
1765 | status = nfs41_test_stateid(server, stateid); | |
1766 | if (status != NFS_OK) { | |
89af2739 CL |
1767 | if (status != -NFS4ERR_BAD_STATEID) |
1768 | nfs41_free_stateid(server, stateid); | |
b01dd1d8 BS |
1769 | state->flags &= ~flags; |
1770 | } | |
1771 | } | |
1772 | return status; | |
1773 | } | |
1774 | ||
1775 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1776 | { | |
b01dd1d8 BS |
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); | |
eb64cf96 | 1779 | int status; |
b01dd1d8 | 1780 | |
eb64cf96 CL |
1781 | nfs41_check_expired_stateid(state, &state->stateid, deleg_flags); |
1782 | status = nfs41_check_expired_stateid(state, &state->open_stateid, | |
1783 | open_flags); | |
b01dd1d8 | 1784 | |
eb64cf96 CL |
1785 | if (status != NFS_OK) |
1786 | status = nfs4_open_expired(sp, state); | |
1787 | return status; | |
f062eb6c BS |
1788 | } |
1789 | #endif | |
1790 | ||
aa53ed54 JL |
1791 | /* |
1792 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1793 | * fields corresponding to attributes that were used to store the verifier. | |
1794 | * Make sure we clobber those fields in the later setattr call | |
1795 | */ | |
1796 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1797 | { | |
1798 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1799 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1800 | sattr->ia_valid |= ATTR_ATIME; | |
1801 | ||
1802 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1803 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1804 | sattr->ia_valid |= ATTR_MTIME; | |
1805 | } | |
1806 | ||
1da177e4 | 1807 | /* |
24ac23ab | 1808 | * Returns a referenced nfs4_state |
1da177e4 | 1809 | */ |
82be417a AA |
1810 | static int _nfs4_do_open(struct inode *dir, |
1811 | struct dentry *dentry, | |
1812 | fmode_t fmode, | |
1813 | int flags, | |
1814 | struct iattr *sattr, | |
1815 | struct rpc_cred *cred, | |
1816 | struct nfs4_state **res, | |
1817 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1818 | { |
1819 | struct nfs4_state_owner *sp; | |
1820 | struct nfs4_state *state = NULL; | |
1821 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1822 | struct nfs4_opendata *opendata; |
aac00a8d | 1823 | int status; |
1da177e4 LT |
1824 | |
1825 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1826 | status = -ENOMEM; |
d1e284d5 TM |
1827 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1828 | if (sp == NULL) { | |
1da177e4 LT |
1829 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1830 | goto out_err; | |
1831 | } | |
58d9714a TM |
1832 | status = nfs4_recover_expired_lease(server); |
1833 | if (status != 0) | |
b4454fe1 | 1834 | goto err_put_state_owner; |
82a2c1b7 AV |
1835 | if (dentry->d_inode != NULL) |
1836 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1837 | status = -ENOMEM; |
82a2c1b7 | 1838 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1839 | if (opendata == NULL) |
95d35cb4 | 1840 | goto err_put_state_owner; |
1da177e4 | 1841 | |
82be417a AA |
1842 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
1843 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
1844 | if (!opendata->f_attr.mdsthreshold) | |
1845 | goto err_opendata_put; | |
1549210f | 1846 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 1847 | } |
82a2c1b7 AV |
1848 | if (dentry->d_inode != NULL) |
1849 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 1850 | |
24ac23ab | 1851 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1852 | if (status != 0) |
c6d00e63 | 1853 | goto err_opendata_put; |
1da177e4 | 1854 | |
24ac23ab | 1855 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1856 | status = PTR_ERR(state); |
1857 | if (IS_ERR(state)) | |
c6d00e63 | 1858 | goto err_opendata_put; |
0df5dd4a | 1859 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1860 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1861 | |
1862 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1863 | nfs4_exclusive_attrset(opendata, sattr); | |
1864 | ||
1865 | nfs_fattr_init(opendata->o_res.f_attr); | |
1866 | status = nfs4_do_setattr(state->inode, cred, | |
1867 | opendata->o_res.f_attr, sattr, | |
1868 | state); | |
1869 | if (status == 0) | |
1870 | nfs_setattr_update_inode(state->inode, sattr); | |
1871 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1872 | } | |
82be417a AA |
1873 | |
1874 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
1875 | *ctx_th = opendata->f_attr.mdsthreshold; | |
1876 | else | |
1877 | kfree(opendata->f_attr.mdsthreshold); | |
1878 | opendata->f_attr.mdsthreshold = NULL; | |
1879 | ||
c6d00e63 | 1880 | nfs4_opendata_put(opendata); |
1da177e4 | 1881 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1882 | *res = state; |
1883 | return 0; | |
c6d00e63 | 1884 | err_opendata_put: |
82be417a | 1885 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 1886 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
1887 | err_put_state_owner: |
1888 | nfs4_put_state_owner(sp); | |
1da177e4 | 1889 | out_err: |
1da177e4 LT |
1890 | *res = NULL; |
1891 | return status; | |
1892 | } | |
1893 | ||
1894 | ||
82be417a AA |
1895 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
1896 | struct dentry *dentry, | |
1897 | fmode_t fmode, | |
1898 | int flags, | |
1899 | struct iattr *sattr, | |
1900 | struct rpc_cred *cred, | |
1901 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1902 | { |
1903 | struct nfs4_exception exception = { }; | |
1904 | struct nfs4_state *res; | |
1905 | int status; | |
1906 | ||
2d0dbc6a | 1907 | fmode &= FMODE_READ|FMODE_WRITE; |
1da177e4 | 1908 | do { |
82be417a AA |
1909 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
1910 | &res, ctx_th); | |
1da177e4 LT |
1911 | if (status == 0) |
1912 | break; | |
1913 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1914 | * book-keeping w.r.t. state-changing operations | |
1915 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1916 | * It is actually a sign of a bug on the client or on the server. | |
1917 | * | |
1918 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1919 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1920 | * have unhashed the old state_owner for us, and that we can |
1921 | * therefore safely retry using a new one. We should still warn | |
1922 | * the user though... | |
1923 | */ | |
1924 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 1925 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
1926 | " returned a bad sequence-id error!\n", |
1927 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1928 | exception.retry = 1; |
1929 | continue; | |
1930 | } | |
550f5747 TM |
1931 | /* |
1932 | * BAD_STATEID on OPEN means that the server cancelled our | |
1933 | * state before it received the OPEN_CONFIRM. | |
1934 | * Recover by retrying the request as per the discussion | |
1935 | * on Page 181 of RFC3530. | |
1936 | */ | |
1937 | if (status == -NFS4ERR_BAD_STATEID) { | |
1938 | exception.retry = 1; | |
1939 | continue; | |
1940 | } | |
aac00a8d TM |
1941 | if (status == -EAGAIN) { |
1942 | /* We must have found a delegation */ | |
1943 | exception.retry = 1; | |
1944 | continue; | |
1945 | } | |
1da177e4 LT |
1946 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1947 | status, &exception)); | |
1948 | } while (exception.retry); | |
1949 | return res; | |
1950 | } | |
1951 | ||
659bfcd6 TM |
1952 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1953 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1954 | struct nfs4_state *state) | |
1da177e4 | 1955 | { |
3e4f6290 | 1956 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1957 | struct nfs_setattrargs arg = { |
3e4f6290 | 1958 | .fh = NFS_FH(inode), |
1da177e4 LT |
1959 | .iap = sattr, |
1960 | .server = server, | |
1961 | .bitmask = server->attr_bitmask, | |
1962 | }; | |
1963 | struct nfs_setattrres res = { | |
1964 | .fattr = fattr, | |
1965 | .server = server, | |
1966 | }; | |
1967 | struct rpc_message msg = { | |
659bfcd6 TM |
1968 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1969 | .rpc_argp = &arg, | |
1970 | .rpc_resp = &res, | |
1971 | .rpc_cred = cred, | |
1da177e4 | 1972 | }; |
26e976a8 | 1973 | unsigned long timestamp = jiffies; |
65e4308d | 1974 | int status; |
1da177e4 | 1975 | |
0e574af1 | 1976 | nfs_fattr_init(fattr); |
1da177e4 | 1977 | |
4fc8796d TM |
1978 | if (state != NULL) { |
1979 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, | |
1980 | current->files, current->tgid); | |
1981 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, | |
1982 | FMODE_WRITE)) { | |
3e4f6290 | 1983 | /* Use that stateid */ |
08e9eac4 | 1984 | } else |
f597c537 | 1985 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 1986 | |
7c513058 | 1987 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1988 | if (status == 0 && state != NULL) |
1989 | renew_lease(server, timestamp); | |
65e4308d | 1990 | return status; |
1da177e4 LT |
1991 | } |
1992 | ||
659bfcd6 TM |
1993 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1994 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1995 | struct nfs4_state *state) | |
1da177e4 | 1996 | { |
3e4f6290 | 1997 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
1998 | struct nfs4_exception exception = { |
1999 | .state = state, | |
3114ea7a | 2000 | .inode = inode, |
a1d0b5ee | 2001 | }; |
1da177e4 LT |
2002 | int err; |
2003 | do { | |
451146be TM |
2004 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2005 | switch (err) { | |
2006 | case -NFS4ERR_OPENMODE: | |
2007 | if (state && !(state->state & FMODE_WRITE)) { | |
2008 | err = -EBADF; | |
2009 | if (sattr->ia_valid & ATTR_OPEN) | |
2010 | err = -EACCES; | |
2011 | goto out; | |
2012 | } | |
2013 | } | |
2014 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2015 | } while (exception.retry); |
451146be | 2016 | out: |
1da177e4 LT |
2017 | return err; |
2018 | } | |
2019 | ||
2020 | struct nfs4_closedata { | |
2021 | struct inode *inode; | |
2022 | struct nfs4_state *state; | |
2023 | struct nfs_closeargs arg; | |
2024 | struct nfs_closeres res; | |
516a6af6 | 2025 | struct nfs_fattr fattr; |
26e976a8 | 2026 | unsigned long timestamp; |
f7e8917a FI |
2027 | bool roc; |
2028 | u32 roc_barrier; | |
1da177e4 LT |
2029 | }; |
2030 | ||
963d8fe5 | 2031 | static void nfs4_free_closedata(void *data) |
9512135d | 2032 | { |
963d8fe5 TM |
2033 | struct nfs4_closedata *calldata = data; |
2034 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2035 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2036 | |
f7e8917a FI |
2037 | if (calldata->roc) |
2038 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2039 | nfs4_put_open_state(calldata->state); |
2040 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2041 | nfs4_put_state_owner(sp); |
643168c2 | 2042 | nfs_sb_deactive(sb); |
9512135d TM |
2043 | kfree(calldata); |
2044 | } | |
2045 | ||
88069f77 TM |
2046 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2047 | fmode_t fmode) | |
2048 | { | |
2049 | spin_lock(&state->owner->so_lock); | |
2050 | if (!(fmode & FMODE_READ)) | |
2051 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2052 | if (!(fmode & FMODE_WRITE)) | |
2053 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2054 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2055 | spin_unlock(&state->owner->so_lock); | |
2056 | } | |
2057 | ||
963d8fe5 | 2058 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2059 | { |
963d8fe5 | 2060 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2061 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2062 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2063 | ||
a3ca5651 | 2064 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2065 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2066 | return; | |
1da177e4 LT |
2067 | /* hmm. we are done with the inode, and in the process of freeing |
2068 | * the state_owner. we keep this around to process errors | |
2069 | */ | |
1da177e4 LT |
2070 | switch (task->tk_status) { |
2071 | case 0: | |
f7e8917a FI |
2072 | if (calldata->roc) |
2073 | pnfs_roc_set_barrier(state->inode, | |
2074 | calldata->roc_barrier); | |
45328c35 | 2075 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2076 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2077 | nfs4_close_clear_stateid_flags(state, |
2078 | calldata->arg.fmode); | |
1da177e4 LT |
2079 | break; |
2080 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2081 | case -NFS4ERR_OLD_STATEID: |
2082 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2083 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2084 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2085 | break; |
1da177e4 | 2086 | default: |
72211dbe TM |
2087 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2088 | rpc_restart_call_prepare(task); | |
1da177e4 | 2089 | } |
72211dbe | 2090 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2091 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2092 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2093 | } |
2094 | ||
4ce70ada | 2095 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2096 | { |
4ce70ada | 2097 | struct nfs4_closedata *calldata = data; |
9512135d | 2098 | struct nfs4_state *state = calldata->state; |
88069f77 | 2099 | int call_close = 0; |
9512135d | 2100 | |
a3ca5651 | 2101 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2102 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2103 | return; |
003707c7 | 2104 | |
88069f77 TM |
2105 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2106 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2107 | spin_lock(&state->owner->so_lock); |
003707c7 | 2108 | /* Calculate the change in open mode */ |
e7616923 | 2109 | if (state->n_rdwr == 0) { |
003707c7 | 2110 | if (state->n_rdonly == 0) { |
88069f77 TM |
2111 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2112 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2113 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2114 | } |
2115 | if (state->n_wronly == 0) { | |
88069f77 TM |
2116 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2117 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2118 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2119 | } |
e7616923 | 2120 | } |
4cecb76f | 2121 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2122 | |
2123 | if (!call_close) { | |
963d8fe5 TM |
2124 | /* Note: exit _without_ calling nfs4_close_done */ |
2125 | task->tk_action = NULL; | |
a3ca5651 | 2126 | goto out; |
9512135d | 2127 | } |
88069f77 | 2128 | |
f7e8917a | 2129 | if (calldata->arg.fmode == 0) { |
88069f77 | 2130 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
2131 | if (calldata->roc && |
2132 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
2133 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
2134 | task, NULL); | |
a3ca5651 | 2135 | goto out; |
f7e8917a FI |
2136 | } |
2137 | } | |
88069f77 | 2138 | |
516a6af6 | 2139 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2140 | calldata->timestamp = jiffies; |
035168ab | 2141 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
9d12b216 TM |
2142 | &calldata->arg.seq_args, |
2143 | &calldata->res.seq_res, | |
2144 | task)) | |
a3ca5651 | 2145 | goto out; |
5138fde0 | 2146 | rpc_call_start(task); |
a3ca5651 CL |
2147 | out: |
2148 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2149 | } |
2150 | ||
963d8fe5 | 2151 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2152 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2153 | .rpc_call_done = nfs4_close_done, |
2154 | .rpc_release = nfs4_free_closedata, | |
2155 | }; | |
2156 | ||
1da177e4 LT |
2157 | /* |
2158 | * It is possible for data to be read/written from a mem-mapped file | |
2159 | * after the sys_close call (which hits the vfs layer as a flush). | |
2160 | * This means that we can't safely call nfsv4 close on a file until | |
2161 | * the inode is cleared. This in turn means that we are not good | |
2162 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2163 | * share state even when we are done with one of the three share | |
2164 | * stateid's in the inode. | |
2165 | * | |
2166 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2167 | */ | |
643168c2 | 2168 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2169 | { |
4a35bd41 | 2170 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2171 | struct nfs4_closedata *calldata; |
b39e625b TM |
2172 | struct nfs4_state_owner *sp = state->owner; |
2173 | struct rpc_task *task; | |
5138fde0 TM |
2174 | struct rpc_message msg = { |
2175 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2176 | .rpc_cred = state->owner->so_cred, | |
2177 | }; | |
c970aa85 TM |
2178 | struct rpc_task_setup task_setup_data = { |
2179 | .rpc_client = server->client, | |
5138fde0 | 2180 | .rpc_message = &msg, |
c970aa85 | 2181 | .callback_ops = &nfs4_close_ops, |
101070ca | 2182 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2183 | .flags = RPC_TASK_ASYNC, |
2184 | }; | |
9512135d | 2185 | int status = -ENOMEM; |
1da177e4 | 2186 | |
8535b2be | 2187 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2188 | if (calldata == NULL) |
9512135d | 2189 | goto out; |
9d12b216 | 2190 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2191 | calldata->inode = state->inode; |
1da177e4 | 2192 | calldata->state = state; |
4a35bd41 | 2193 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2194 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2195 | /* Serialization for the sequence id */ |
8535b2be | 2196 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2197 | if (calldata->arg.seqid == NULL) |
2198 | goto out_free_calldata; | |
dc0b027d | 2199 | calldata->arg.fmode = 0; |
a65318bf | 2200 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2201 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2202 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2203 | calldata->res.server = server; |
f7e8917a | 2204 | calldata->roc = roc; |
643168c2 | 2205 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2206 | |
1174dd1f TM |
2207 | msg.rpc_argp = &calldata->arg; |
2208 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2209 | task_setup_data.callback_data = calldata; |
2210 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2211 | if (IS_ERR(task)) |
2212 | return PTR_ERR(task); | |
a49c3c77 TM |
2213 | status = 0; |
2214 | if (wait) | |
2215 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2216 | rpc_put_task(task); |
a49c3c77 | 2217 | return status; |
9512135d TM |
2218 | out_free_calldata: |
2219 | kfree(calldata); | |
2220 | out: | |
f7e8917a FI |
2221 | if (roc) |
2222 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2223 | nfs4_put_open_state(state); |
2224 | nfs4_put_state_owner(sp); | |
9512135d | 2225 | return status; |
1da177e4 LT |
2226 | } |
2227 | ||
2b484297 | 2228 | static struct inode * |
cd9a1c0e | 2229 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2230 | { |
1da177e4 | 2231 | struct nfs4_state *state; |
1da177e4 | 2232 | |
565277f6 | 2233 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2234 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2235 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2236 | if (IS_ERR(state)) |
2237 | return ERR_CAST(state); | |
cd9a1c0e | 2238 | ctx->state = state; |
f46e0bd3 | 2239 | return igrab(state->inode); |
1da177e4 LT |
2240 | } |
2241 | ||
1185a552 | 2242 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2243 | { |
2244 | if (ctx->state == NULL) | |
2245 | return; | |
2246 | if (is_sync) | |
643168c2 | 2247 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2248 | else |
643168c2 | 2249 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2250 | } |
1da177e4 LT |
2251 | |
2252 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2253 | { | |
43652ad5 BH |
2254 | struct nfs4_server_caps_arg args = { |
2255 | .fhandle = fhandle, | |
2256 | }; | |
1da177e4 LT |
2257 | struct nfs4_server_caps_res res = {}; |
2258 | struct rpc_message msg = { | |
2259 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2260 | .rpc_argp = &args, |
1da177e4 LT |
2261 | .rpc_resp = &res, |
2262 | }; | |
2263 | int status; | |
2264 | ||
7c513058 | 2265 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2266 | if (status == 0) { |
2267 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2268 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2269 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2270 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2271 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2272 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2273 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2274 | server->caps |= NFS_CAP_ACLS; | |
2275 | if (res.has_links != 0) | |
2276 | server->caps |= NFS_CAP_HARDLINKS; | |
2277 | if (res.has_symlinks != 0) | |
2278 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2279 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2280 | server->caps |= NFS_CAP_FILEID; | |
2281 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2282 | server->caps |= NFS_CAP_MODE; | |
2283 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2284 | server->caps |= NFS_CAP_NLINK; | |
2285 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2286 | server->caps |= NFS_CAP_OWNER; | |
2287 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2288 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2289 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2290 | server->caps |= NFS_CAP_ATIME; | |
2291 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2292 | server->caps |= NFS_CAP_CTIME; | |
2293 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2294 | server->caps |= NFS_CAP_MTIME; | |
2295 | ||
a65318bf TM |
2296 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2297 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2298 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2299 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2300 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2301 | } |
cccef3b9 | 2302 | |
1da177e4 LT |
2303 | return status; |
2304 | } | |
2305 | ||
55a97593 | 2306 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2307 | { |
2308 | struct nfs4_exception exception = { }; | |
2309 | int err; | |
2310 | do { | |
2311 | err = nfs4_handle_exception(server, | |
2312 | _nfs4_server_capabilities(server, fhandle), | |
2313 | &exception); | |
2314 | } while (exception.retry); | |
2315 | return err; | |
2316 | } | |
2317 | ||
2318 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2319 | struct nfs_fsinfo *info) | |
2320 | { | |
1da177e4 LT |
2321 | struct nfs4_lookup_root_arg args = { |
2322 | .bitmask = nfs4_fattr_bitmap, | |
2323 | }; | |
2324 | struct nfs4_lookup_res res = { | |
2325 | .server = server, | |
0e574af1 | 2326 | .fattr = info->fattr, |
1da177e4 LT |
2327 | .fh = fhandle, |
2328 | }; | |
2329 | struct rpc_message msg = { | |
2330 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2331 | .rpc_argp = &args, | |
2332 | .rpc_resp = &res, | |
2333 | }; | |
008f55d0 | 2334 | |
0e574af1 | 2335 | nfs_fattr_init(info->fattr); |
7c513058 | 2336 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2337 | } |
2338 | ||
2339 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2340 | struct nfs_fsinfo *info) | |
2341 | { | |
2342 | struct nfs4_exception exception = { }; | |
2343 | int err; | |
2344 | do { | |
fb8a5ba8 BS |
2345 | err = _nfs4_lookup_root(server, fhandle, info); |
2346 | switch (err) { | |
2347 | case 0: | |
2348 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2349 | goto out; |
fb8a5ba8 BS |
2350 | default: |
2351 | err = nfs4_handle_exception(server, err, &exception); | |
2352 | } | |
1da177e4 | 2353 | } while (exception.retry); |
05e9cfb4 | 2354 | out: |
1da177e4 LT |
2355 | return err; |
2356 | } | |
2357 | ||
8f70e95f BS |
2358 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2359 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2360 | { | |
2361 | struct rpc_auth *auth; | |
2362 | int ret; | |
2363 | ||
2364 | auth = rpcauth_create(flavor, server->client); | |
2365 | if (!auth) { | |
2366 | ret = -EIO; | |
2367 | goto out; | |
2368 | } | |
2369 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2370 | out: |
2371 | return ret; | |
2372 | } | |
2373 | ||
801a16dc | 2374 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2375 | struct nfs_fsinfo *info) |
1da177e4 | 2376 | { |
8f70e95f | 2377 | int i, len, status = 0; |
0fabee24 | 2378 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2379 | |
801a16dc BS |
2380 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2381 | flav_array[len] = RPC_AUTH_NULL; | |
2382 | len += 1; | |
8f70e95f BS |
2383 | |
2384 | for (i = 0; i < len; i++) { | |
2385 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2386 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2387 | continue; |
2388 | break; | |
8f70e95f | 2389 | } |
fb8a5ba8 BS |
2390 | /* |
2391 | * -EACCESS could mean that the user doesn't have correct permissions | |
2392 | * to access the mount. It could also mean that we tried to mount | |
2393 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2394 | * existing mount programs don't handle -EACCES very well so it should | |
2395 | * be mapped to -EPERM instead. | |
2396 | */ | |
2397 | if (status == -EACCES) | |
2398 | status = -EPERM; | |
801a16dc BS |
2399 | return status; |
2400 | } | |
2401 | ||
2402 | /* | |
2403 | * get the file handle for the "/" directory on the server | |
2404 | */ | |
3028eb2b BS |
2405 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2406 | struct nfs_fsinfo *info) | |
801a16dc | 2407 | { |
fca78d6d | 2408 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2409 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2410 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2411 | /* | |
2412 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2413 | * by nfs4_map_errors() as this function exits. | |
2414 | */ | |
fca78d6d | 2415 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2416 | if (status == 0) |
2417 | status = nfs4_server_capabilities(server, fhandle); | |
2418 | if (status == 0) | |
2419 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2420 | return nfs4_map_errors(status); |
1da177e4 LT |
2421 | } |
2422 | ||
bae36241 BS |
2423 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2424 | struct nfs_fsinfo *info) | |
2425 | { | |
2426 | int error; | |
2427 | struct nfs_fattr *fattr = info->fattr; | |
2428 | ||
2429 | error = nfs4_server_capabilities(server, mntfh); | |
2430 | if (error < 0) { | |
2431 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2432 | return error; | |
2433 | } | |
2434 | ||
2435 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2436 | if (error < 0) { | |
2437 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2438 | return error; | |
2439 | } | |
2440 | ||
2441 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2442 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2443 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2444 | ||
2445 | return error; | |
2446 | } | |
2447 | ||
6b97fd3d MN |
2448 | /* |
2449 | * Get locations and (maybe) other attributes of a referral. | |
2450 | * Note that we'll actually follow the referral later when | |
2451 | * we detect fsid mismatch in inode revalidation | |
2452 | */ | |
f05d147f BS |
2453 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2454 | const struct qstr *name, struct nfs_fattr *fattr, | |
2455 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2456 | { |
2457 | int status = -ENOMEM; | |
2458 | struct page *page = NULL; | |
2459 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2460 | |
2461 | page = alloc_page(GFP_KERNEL); | |
2462 | if (page == NULL) | |
2463 | goto out; | |
2464 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2465 | if (locations == NULL) | |
2466 | goto out; | |
2467 | ||
f05d147f | 2468 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2469 | if (status != 0) |
2470 | goto out; | |
2471 | /* Make sure server returned a different fsid for the referral */ | |
2472 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2473 | dprintk("%s: server did not return a different fsid for" |
2474 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2475 | status = -EIO; |
2476 | goto out; | |
2477 | } | |
533eb461 AA |
2478 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2479 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2480 | |
533eb461 | 2481 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2482 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2483 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2484 | out: | |
2485 | if (page) | |
2486 | __free_page(page); | |
5d7ca35a | 2487 | kfree(locations); |
6b97fd3d MN |
2488 | return status; |
2489 | } | |
2490 | ||
1da177e4 LT |
2491 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2492 | { | |
2493 | struct nfs4_getattr_arg args = { | |
2494 | .fh = fhandle, | |
2495 | .bitmask = server->attr_bitmask, | |
2496 | }; | |
2497 | struct nfs4_getattr_res res = { | |
2498 | .fattr = fattr, | |
2499 | .server = server, | |
2500 | }; | |
2501 | struct rpc_message msg = { | |
2502 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2503 | .rpc_argp = &args, | |
2504 | .rpc_resp = &res, | |
2505 | }; | |
2506 | ||
0e574af1 | 2507 | nfs_fattr_init(fattr); |
7c513058 | 2508 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2509 | } |
2510 | ||
2511 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2512 | { | |
2513 | struct nfs4_exception exception = { }; | |
2514 | int err; | |
2515 | do { | |
2516 | err = nfs4_handle_exception(server, | |
2517 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2518 | &exception); | |
2519 | } while (exception.retry); | |
2520 | return err; | |
2521 | } | |
2522 | ||
2523 | /* | |
2524 | * The file is not closed if it is opened due to the a request to change | |
2525 | * the size of the file. The open call will not be needed once the | |
2526 | * VFS layer lookup-intents are implemented. | |
2527 | * | |
2528 | * Close is called when the inode is destroyed. | |
2529 | * If we haven't opened the file for O_WRONLY, we | |
2530 | * need to in the size_change case to obtain a stateid. | |
2531 | * | |
2532 | * Got race? | |
2533 | * Because OPEN is always done by name in nfsv4, it is | |
2534 | * possible that we opened a different file by the same | |
2535 | * name. We can recognize this race condition, but we | |
2536 | * can't do anything about it besides returning an error. | |
2537 | * | |
2538 | * This will be fixed with VFS changes (lookup-intent). | |
2539 | */ | |
2540 | static int | |
2541 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2542 | struct iattr *sattr) | |
2543 | { | |
08e9eac4 | 2544 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2545 | struct rpc_cred *cred = NULL; |
d530838b | 2546 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2547 | int status; |
2548 | ||
8a1636c4 BH |
2549 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2550 | pnfs_return_layout(inode); | |
2551 | ||
0e574af1 | 2552 | nfs_fattr_init(fattr); |
1da177e4 | 2553 | |
2669940d AA |
2554 | /* Deal with open(O_TRUNC) */ |
2555 | if (sattr->ia_valid & ATTR_OPEN) | |
2556 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2557 | ||
2558 | /* Optimization: if the end result is no change, don't RPC */ | |
2559 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2560 | return 0; | |
2561 | ||
d530838b | 2562 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2563 | if (sattr->ia_valid & ATTR_FILE) { |
2564 | struct nfs_open_context *ctx; | |
2565 | ||
2566 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2567 | if (ctx) { |
2568 | cred = ctx->cred; | |
2569 | state = ctx->state; | |
2570 | } | |
659bfcd6 | 2571 | } |
08e9eac4 | 2572 | |
659bfcd6 | 2573 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2574 | if (status == 0) |
2575 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2576 | return status; |
2577 | } | |
2578 | ||
0c2e53f1 TM |
2579 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2580 | const struct qstr *name, struct nfs_fh *fhandle, | |
2581 | struct nfs_fattr *fattr) | |
2b3de441 | 2582 | { |
0c2e53f1 | 2583 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2584 | int status; |
2585 | struct nfs4_lookup_arg args = { | |
2586 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2587 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2588 | .name = name, |
2589 | }; | |
2590 | struct nfs4_lookup_res res = { | |
2591 | .server = server, | |
2592 | .fattr = fattr, | |
2593 | .fh = fhandle, | |
2594 | }; | |
2595 | struct rpc_message msg = { | |
2596 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2597 | .rpc_argp = &args, | |
2598 | .rpc_resp = &res, | |
2599 | }; | |
2600 | ||
2601 | nfs_fattr_init(fattr); | |
2602 | ||
1da177e4 | 2603 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2604 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2605 | dprintk("NFS reply lookup: %d\n", status); |
2606 | return status; | |
2607 | } | |
2608 | ||
72de53ec | 2609 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2610 | { |
7ebb9315 | 2611 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2612 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2613 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2614 | fattr->nlink = 2; | |
2615 | } | |
2616 | ||
72de53ec BS |
2617 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2618 | struct qstr *name, struct nfs_fh *fhandle, | |
2619 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2620 | { |
2621 | struct nfs4_exception exception = { }; | |
72de53ec | 2622 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2623 | int err; |
2624 | do { | |
72de53ec BS |
2625 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2626 | switch (err) { | |
08ef7bd3 | 2627 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2628 | err = -ENOENT; |
2629 | goto out; | |
0c2e53f1 | 2630 | case -NFS4ERR_MOVED: |
f05d147f | 2631 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2632 | goto out; |
0c2e53f1 | 2633 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2634 | err = -EPERM; |
2635 | if (client != *clnt) | |
2636 | goto out; | |
2637 | ||
2638 | client = nfs4_create_sec_client(client, dir, name); | |
2639 | if (IS_ERR(client)) | |
2640 | return PTR_ERR(client); | |
2641 | ||
2642 | exception.retry = 1; | |
2643 | break; | |
2644 | default: | |
2645 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2646 | } |
1da177e4 | 2647 | } while (exception.retry); |
72de53ec BS |
2648 | |
2649 | out: | |
2650 | if (err == 0) | |
2651 | *clnt = client; | |
2652 | else if (client != *clnt) | |
2653 | rpc_shutdown_client(client); | |
2654 | ||
1da177e4 LT |
2655 | return err; |
2656 | } | |
2657 | ||
80a16b21 | 2658 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2659 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2660 | { | |
2661 | int status; | |
2662 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2663 | ||
2664 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2665 | if (client != NFS_CLIENT(dir)) { | |
2666 | rpc_shutdown_client(client); | |
2667 | nfs_fixup_secinfo_attributes(fattr); | |
2668 | } | |
2669 | return status; | |
2670 | } | |
2671 | ||
f05d147f BS |
2672 | struct rpc_clnt * |
2673 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2674 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2675 | { | |
2676 | int status; | |
2677 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2678 | ||
2679 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2680 | if (status < 0) { | |
2681 | rpc_shutdown_client(client); | |
2682 | return ERR_PTR(status); | |
2683 | } | |
2684 | return client; | |
2685 | } | |
2686 | ||
1da177e4 LT |
2687 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2688 | { | |
76b32999 | 2689 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2690 | struct nfs4_accessargs args = { |
2691 | .fh = NFS_FH(inode), | |
a4980e78 | 2692 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2693 | }; |
2694 | struct nfs4_accessres res = { | |
2695 | .server = server, | |
1da177e4 | 2696 | }; |
1da177e4 LT |
2697 | struct rpc_message msg = { |
2698 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2699 | .rpc_argp = &args, | |
2700 | .rpc_resp = &res, | |
2701 | .rpc_cred = entry->cred, | |
2702 | }; | |
2703 | int mode = entry->mask; | |
2704 | int status; | |
2705 | ||
2706 | /* | |
2707 | * Determine which access bits we want to ask for... | |
2708 | */ | |
2709 | if (mode & MAY_READ) | |
2710 | args.access |= NFS4_ACCESS_READ; | |
2711 | if (S_ISDIR(inode->i_mode)) { | |
2712 | if (mode & MAY_WRITE) | |
2713 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2714 | if (mode & MAY_EXEC) | |
2715 | args.access |= NFS4_ACCESS_LOOKUP; | |
2716 | } else { | |
2717 | if (mode & MAY_WRITE) | |
2718 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2719 | if (mode & MAY_EXEC) | |
2720 | args.access |= NFS4_ACCESS_EXECUTE; | |
2721 | } | |
c407d41a TM |
2722 | |
2723 | res.fattr = nfs_alloc_fattr(); | |
2724 | if (res.fattr == NULL) | |
2725 | return -ENOMEM; | |
2726 | ||
7c513058 | 2727 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2728 | if (!status) { |
2729 | entry->mask = 0; | |
2730 | if (res.access & NFS4_ACCESS_READ) | |
2731 | entry->mask |= MAY_READ; | |
2732 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2733 | entry->mask |= MAY_WRITE; | |
2734 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2735 | entry->mask |= MAY_EXEC; | |
c407d41a | 2736 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2737 | } |
c407d41a | 2738 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2739 | return status; |
2740 | } | |
2741 | ||
2742 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2743 | { | |
2744 | struct nfs4_exception exception = { }; | |
2745 | int err; | |
2746 | do { | |
2747 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2748 | _nfs4_proc_access(inode, entry), | |
2749 | &exception); | |
2750 | } while (exception.retry); | |
2751 | return err; | |
2752 | } | |
2753 | ||
2754 | /* | |
2755 | * TODO: For the time being, we don't try to get any attributes | |
2756 | * along with any of the zero-copy operations READ, READDIR, | |
2757 | * READLINK, WRITE. | |
2758 | * | |
2759 | * In the case of the first three, we want to put the GETATTR | |
2760 | * after the read-type operation -- this is because it is hard | |
2761 | * to predict the length of a GETATTR response in v4, and thus | |
2762 | * align the READ data correctly. This means that the GETATTR | |
2763 | * may end up partially falling into the page cache, and we should | |
2764 | * shift it into the 'tail' of the xdr_buf before processing. | |
2765 | * To do this efficiently, we need to know the total length | |
2766 | * of data received, which doesn't seem to be available outside | |
2767 | * of the RPC layer. | |
2768 | * | |
2769 | * In the case of WRITE, we also want to put the GETATTR after | |
2770 | * the operation -- in this case because we want to make sure | |
140150db | 2771 | * we get the post-operation mtime and size. |
1da177e4 LT |
2772 | * |
2773 | * Both of these changes to the XDR layer would in fact be quite | |
2774 | * minor, but I decided to leave them for a subsequent patch. | |
2775 | */ | |
2776 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2777 | unsigned int pgbase, unsigned int pglen) | |
2778 | { | |
2779 | struct nfs4_readlink args = { | |
2780 | .fh = NFS_FH(inode), | |
2781 | .pgbase = pgbase, | |
2782 | .pglen = pglen, | |
2783 | .pages = &page, | |
2784 | }; | |
f50c7000 | 2785 | struct nfs4_readlink_res res; |
1da177e4 LT |
2786 | struct rpc_message msg = { |
2787 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2788 | .rpc_argp = &args, | |
f50c7000 | 2789 | .rpc_resp = &res, |
1da177e4 LT |
2790 | }; |
2791 | ||
7c513058 | 2792 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2793 | } |
2794 | ||
2795 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2796 | unsigned int pgbase, unsigned int pglen) | |
2797 | { | |
2798 | struct nfs4_exception exception = { }; | |
2799 | int err; | |
2800 | do { | |
2801 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2802 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2803 | &exception); | |
2804 | } while (exception.retry); | |
2805 | return err; | |
2806 | } | |
2807 | ||
1da177e4 | 2808 | /* |
8867fe58 | 2809 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 2810 | */ |
1da177e4 LT |
2811 | static int |
2812 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 2813 | int flags) |
1da177e4 | 2814 | { |
8867fe58 | 2815 | struct nfs_open_context *ctx; |
1da177e4 | 2816 | struct nfs4_state *state; |
1da177e4 LT |
2817 | int status = 0; |
2818 | ||
8867fe58 MS |
2819 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
2820 | if (IS_ERR(ctx)) | |
2821 | return PTR_ERR(ctx); | |
2822 | ||
a8a5da99 | 2823 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
2824 | state = nfs4_do_open(dir, dentry, ctx->mode, |
2825 | flags, sattr, ctx->cred, | |
2826 | &ctx->mdsthreshold); | |
d4d9cdcb | 2827 | d_drop(dentry); |
1da177e4 LT |
2828 | if (IS_ERR(state)) { |
2829 | status = PTR_ERR(state); | |
c0204fd2 | 2830 | goto out; |
1da177e4 | 2831 | } |
d4d9cdcb | 2832 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2833 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 2834 | ctx->state = state; |
1da177e4 | 2835 | out: |
8867fe58 | 2836 | put_nfs_open_context(ctx); |
1da177e4 LT |
2837 | return status; |
2838 | } | |
2839 | ||
2840 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2841 | { | |
16e42959 | 2842 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2843 | struct nfs_removeargs args = { |
1da177e4 | 2844 | .fh = NFS_FH(dir), |
26fe5750 | 2845 | .name = *name, |
16e42959 | 2846 | }; |
4fdc17b2 | 2847 | struct nfs_removeres res = { |
16e42959 | 2848 | .server = server, |
1da177e4 | 2849 | }; |
1da177e4 | 2850 | struct rpc_message msg = { |
4fdc17b2 TM |
2851 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2852 | .rpc_argp = &args, | |
2853 | .rpc_resp = &res, | |
1da177e4 | 2854 | }; |
778d2817 | 2855 | int status; |
1da177e4 | 2856 | |
7c513058 | 2857 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 2858 | if (status == 0) |
16e42959 | 2859 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
2860 | return status; |
2861 | } | |
2862 | ||
2863 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2864 | { | |
2865 | struct nfs4_exception exception = { }; | |
2866 | int err; | |
2867 | do { | |
2868 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2869 | _nfs4_proc_remove(dir, name), | |
2870 | &exception); | |
2871 | } while (exception.retry); | |
2872 | return err; | |
2873 | } | |
2874 | ||
e4eff1a6 | 2875 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2876 | { |
e4eff1a6 TM |
2877 | struct nfs_server *server = NFS_SERVER(dir); |
2878 | struct nfs_removeargs *args = msg->rpc_argp; | |
2879 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2880 | |
e4eff1a6 | 2881 | res->server = server; |
1da177e4 | 2882 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 2883 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
2884 | } |
2885 | ||
34e137cc BS |
2886 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
2887 | { | |
2888 | if (nfs4_setup_sequence(NFS_SERVER(data->dir), | |
2889 | &data->args.seq_args, | |
2890 | &data->res.seq_res, | |
2891 | task)) | |
2892 | return; | |
2893 | rpc_call_start(task); | |
1da177e4 LT |
2894 | } |
2895 | ||
e4eff1a6 | 2896 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2897 | { |
e4eff1a6 TM |
2898 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2899 | ||
14516c3a TM |
2900 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2901 | return 0; | |
9e33bed5 | 2902 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2903 | return 0; |
2904 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 2905 | return 1; |
1da177e4 LT |
2906 | } |
2907 | ||
d3d4152a JL |
2908 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2909 | { | |
2910 | struct nfs_server *server = NFS_SERVER(dir); | |
2911 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2912 | struct nfs_renameres *res = msg->rpc_resp; | |
2913 | ||
2914 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 2915 | res->server = server; |
9d12b216 | 2916 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
2917 | } |
2918 | ||
c6bfa1a1 BS |
2919 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
2920 | { | |
2921 | if (nfs4_setup_sequence(NFS_SERVER(data->old_dir), | |
2922 | &data->args.seq_args, | |
2923 | &data->res.seq_res, | |
2924 | task)) | |
2925 | return; | |
2926 | rpc_call_start(task); | |
d3d4152a JL |
2927 | } |
2928 | ||
2929 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2930 | struct inode *new_dir) | |
2931 | { | |
2932 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2933 | ||
2934 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2935 | return 0; | |
2936 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2937 | return 0; | |
2938 | ||
2939 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 2940 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
2941 | return 1; |
2942 | } | |
2943 | ||
1da177e4 LT |
2944 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2945 | struct inode *new_dir, struct qstr *new_name) | |
2946 | { | |
6caf2c82 | 2947 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2948 | struct nfs_renameargs arg = { |
1da177e4 LT |
2949 | .old_dir = NFS_FH(old_dir), |
2950 | .new_dir = NFS_FH(new_dir), | |
2951 | .old_name = old_name, | |
2952 | .new_name = new_name, | |
6caf2c82 | 2953 | }; |
e8582a8b | 2954 | struct nfs_renameres res = { |
6caf2c82 | 2955 | .server = server, |
1da177e4 | 2956 | }; |
1da177e4 LT |
2957 | struct rpc_message msg = { |
2958 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2959 | .rpc_argp = &arg, | |
2960 | .rpc_resp = &res, | |
2961 | }; | |
011fff72 | 2962 | int status = -ENOMEM; |
1da177e4 | 2963 | |
7c513058 | 2964 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2965 | if (!status) { |
2966 | update_changeattr(old_dir, &res.old_cinfo); | |
2967 | update_changeattr(new_dir, &res.new_cinfo); | |
2968 | } | |
2969 | return status; | |
2970 | } | |
2971 | ||
2972 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2973 | struct inode *new_dir, struct qstr *new_name) | |
2974 | { | |
2975 | struct nfs4_exception exception = { }; | |
2976 | int err; | |
2977 | do { | |
2978 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2979 | _nfs4_proc_rename(old_dir, old_name, | |
2980 | new_dir, new_name), | |
2981 | &exception); | |
2982 | } while (exception.retry); | |
2983 | return err; | |
2984 | } | |
2985 | ||
2986 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2987 | { | |
91ba2eee | 2988 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2989 | struct nfs4_link_arg arg = { |
2990 | .fh = NFS_FH(inode), | |
2991 | .dir_fh = NFS_FH(dir), | |
2992 | .name = name, | |
91ba2eee TM |
2993 | .bitmask = server->attr_bitmask, |
2994 | }; | |
91ba2eee TM |
2995 | struct nfs4_link_res res = { |
2996 | .server = server, | |
1da177e4 | 2997 | }; |
1da177e4 LT |
2998 | struct rpc_message msg = { |
2999 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3000 | .rpc_argp = &arg, | |
91ba2eee | 3001 | .rpc_resp = &res, |
1da177e4 | 3002 | }; |
136f2627 TM |
3003 | int status = -ENOMEM; |
3004 | ||
3005 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3006 | if (res.fattr == NULL) |
136f2627 | 3007 | goto out; |
1da177e4 | 3008 | |
7c513058 | 3009 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3010 | if (!status) { |
3011 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3012 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3013 | } |
136f2627 | 3014 | out: |
136f2627 | 3015 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3016 | return status; |
3017 | } | |
3018 | ||
3019 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3020 | { | |
3021 | struct nfs4_exception exception = { }; | |
3022 | int err; | |
3023 | do { | |
3024 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3025 | _nfs4_proc_link(inode, dir, name), | |
3026 | &exception); | |
3027 | } while (exception.retry); | |
3028 | return err; | |
3029 | } | |
3030 | ||
57dc9a57 TM |
3031 | struct nfs4_createdata { |
3032 | struct rpc_message msg; | |
3033 | struct nfs4_create_arg arg; | |
3034 | struct nfs4_create_res res; | |
3035 | struct nfs_fh fh; | |
3036 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3037 | }; |
3038 | ||
3039 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3040 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3041 | { | |
3042 | struct nfs4_createdata *data; | |
3043 | ||
3044 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3045 | if (data != NULL) { | |
3046 | struct nfs_server *server = NFS_SERVER(dir); | |
3047 | ||
3048 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3049 | data->msg.rpc_argp = &data->arg; | |
3050 | data->msg.rpc_resp = &data->res; | |
3051 | data->arg.dir_fh = NFS_FH(dir); | |
3052 | data->arg.server = server; | |
3053 | data->arg.name = name; | |
3054 | data->arg.attrs = sattr; | |
3055 | data->arg.ftype = ftype; | |
3056 | data->arg.bitmask = server->attr_bitmask; | |
3057 | data->res.server = server; | |
3058 | data->res.fh = &data->fh; | |
3059 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3060 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3061 | } |
3062 | return data; | |
3063 | } | |
3064 | ||
3065 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3066 | { | |
7c513058 | 3067 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3068 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3069 | if (status == 0) { |
3070 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3071 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3072 | } | |
3073 | return status; | |
3074 | } | |
3075 | ||
3076 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3077 | { | |
3078 | kfree(data); | |
3079 | } | |
3080 | ||
4f390c15 | 3081 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3082 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3083 | { |
57dc9a57 TM |
3084 | struct nfs4_createdata *data; |
3085 | int status = -ENAMETOOLONG; | |
1da177e4 | 3086 | |
94a6d753 | 3087 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3088 | goto out; |
4f390c15 | 3089 | |
57dc9a57 TM |
3090 | status = -ENOMEM; |
3091 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3092 | if (data == NULL) | |
3093 | goto out; | |
3094 | ||
3095 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3096 | data->arg.u.symlink.pages = &page; | |
3097 | data->arg.u.symlink.len = len; | |
1da177e4 | 3098 | |
57dc9a57 TM |
3099 | status = nfs4_do_create(dir, dentry, data); |
3100 | ||
3101 | nfs4_free_createdata(data); | |
3102 | out: | |
1da177e4 LT |
3103 | return status; |
3104 | } | |
3105 | ||
4f390c15 | 3106 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3107 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3108 | { |
3109 | struct nfs4_exception exception = { }; | |
3110 | int err; | |
3111 | do { | |
3112 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3113 | _nfs4_proc_symlink(dir, dentry, page, |
3114 | len, sattr), | |
1da177e4 LT |
3115 | &exception); |
3116 | } while (exception.retry); | |
3117 | return err; | |
3118 | } | |
3119 | ||
3120 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3121 | struct iattr *sattr) | |
3122 | { | |
57dc9a57 TM |
3123 | struct nfs4_createdata *data; |
3124 | int status = -ENOMEM; | |
1da177e4 | 3125 | |
57dc9a57 TM |
3126 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3127 | if (data == NULL) | |
3128 | goto out; | |
3129 | ||
3130 | status = nfs4_do_create(dir, dentry, data); | |
3131 | ||
3132 | nfs4_free_createdata(data); | |
3133 | out: | |
1da177e4 LT |
3134 | return status; |
3135 | } | |
3136 | ||
3137 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3138 | struct iattr *sattr) | |
3139 | { | |
3140 | struct nfs4_exception exception = { }; | |
3141 | int err; | |
a8a5da99 AK |
3142 | |
3143 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3144 | do { |
3145 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3146 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3147 | &exception); | |
3148 | } while (exception.retry); | |
3149 | return err; | |
3150 | } | |
3151 | ||
3152 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3153 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3154 | { |
3155 | struct inode *dir = dentry->d_inode; | |
3156 | struct nfs4_readdir_arg args = { | |
3157 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3158 | .pages = pages, |
1da177e4 LT |
3159 | .pgbase = 0, |
3160 | .count = count, | |
96d25e53 | 3161 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3162 | .plus = plus, |
1da177e4 LT |
3163 | }; |
3164 | struct nfs4_readdir_res res; | |
3165 | struct rpc_message msg = { | |
3166 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3167 | .rpc_argp = &args, | |
3168 | .rpc_resp = &res, | |
3169 | .rpc_cred = cred, | |
3170 | }; | |
3171 | int status; | |
3172 | ||
3110ff80 | 3173 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3174 | dentry->d_parent->d_name.name, |
3175 | dentry->d_name.name, | |
3176 | (unsigned long long)cookie); | |
1da177e4 LT |
3177 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3178 | res.pgbase = args.pgbase; | |
7c513058 | 3179 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3180 | if (status >= 0) { |
1da177e4 | 3181 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3182 | status += args.pgbase; |
3183 | } | |
c4812998 TM |
3184 | |
3185 | nfs_invalidate_atime(dir); | |
3186 | ||
3110ff80 | 3187 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3188 | return status; |
3189 | } | |
3190 | ||
3191 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3192 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3193 | { |
3194 | struct nfs4_exception exception = { }; | |
3195 | int err; | |
3196 | do { | |
3197 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3198 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3199 | pages, count, plus), |
1da177e4 LT |
3200 | &exception); |
3201 | } while (exception.retry); | |
3202 | return err; | |
3203 | } | |
3204 | ||
3205 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3206 | struct iattr *sattr, dev_t rdev) | |
3207 | { | |
57dc9a57 TM |
3208 | struct nfs4_createdata *data; |
3209 | int mode = sattr->ia_mode; | |
3210 | int status = -ENOMEM; | |
1da177e4 LT |
3211 | |
3212 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3213 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3214 | |
3215 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3216 | if (data == NULL) | |
3217 | goto out; | |
3218 | ||
1da177e4 | 3219 | if (S_ISFIFO(mode)) |
57dc9a57 | 3220 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3221 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3222 | data->arg.ftype = NF4BLK; |
3223 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3224 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3225 | } |
3226 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3227 | data->arg.ftype = NF4CHR; |
3228 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3229 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3230 | } |
1da177e4 | 3231 | |
57dc9a57 TM |
3232 | status = nfs4_do_create(dir, dentry, data); |
3233 | ||
3234 | nfs4_free_createdata(data); | |
3235 | out: | |
1da177e4 LT |
3236 | return status; |
3237 | } | |
3238 | ||
3239 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3240 | struct iattr *sattr, dev_t rdev) | |
3241 | { | |
3242 | struct nfs4_exception exception = { }; | |
3243 | int err; | |
a8a5da99 AK |
3244 | |
3245 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3246 | do { |
3247 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3248 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3249 | &exception); | |
3250 | } while (exception.retry); | |
3251 | return err; | |
3252 | } | |
3253 | ||
3254 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3255 | struct nfs_fsstat *fsstat) | |
3256 | { | |
3257 | struct nfs4_statfs_arg args = { | |
3258 | .fh = fhandle, | |
3259 | .bitmask = server->attr_bitmask, | |
3260 | }; | |
24ad148a BH |
3261 | struct nfs4_statfs_res res = { |
3262 | .fsstat = fsstat, | |
3263 | }; | |
1da177e4 LT |
3264 | struct rpc_message msg = { |
3265 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3266 | .rpc_argp = &args, | |
24ad148a | 3267 | .rpc_resp = &res, |
1da177e4 LT |
3268 | }; |
3269 | ||
0e574af1 | 3270 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3271 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3272 | } |
3273 | ||
3274 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3275 | { | |
3276 | struct nfs4_exception exception = { }; | |
3277 | int err; | |
3278 | do { | |
3279 | err = nfs4_handle_exception(server, | |
3280 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3281 | &exception); | |
3282 | } while (exception.retry); | |
3283 | return err; | |
3284 | } | |
3285 | ||
3286 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3287 | struct nfs_fsinfo *fsinfo) | |
3288 | { | |
3289 | struct nfs4_fsinfo_arg args = { | |
3290 | .fh = fhandle, | |
3291 | .bitmask = server->attr_bitmask, | |
3292 | }; | |
3dda5e43 BH |
3293 | struct nfs4_fsinfo_res res = { |
3294 | .fsinfo = fsinfo, | |
3295 | }; | |
1da177e4 LT |
3296 | struct rpc_message msg = { |
3297 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3298 | .rpc_argp = &args, | |
3dda5e43 | 3299 | .rpc_resp = &res, |
1da177e4 LT |
3300 | }; |
3301 | ||
7c513058 | 3302 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3303 | } |
3304 | ||
3305 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3306 | { | |
3307 | struct nfs4_exception exception = { }; | |
3308 | int err; | |
3309 | ||
3310 | do { | |
3311 | err = nfs4_handle_exception(server, | |
3312 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3313 | &exception); | |
3314 | } while (exception.retry); | |
3315 | return err; | |
3316 | } | |
3317 | ||
3318 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3319 | { | |
e38eb650 BS |
3320 | int error; |
3321 | ||
0e574af1 | 3322 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 BS |
3323 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
3324 | if (error == 0) | |
3325 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); | |
3326 | ||
3327 | return error; | |
1da177e4 LT |
3328 | } |
3329 | ||
3330 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3331 | struct nfs_pathconf *pathconf) | |
3332 | { | |
3333 | struct nfs4_pathconf_arg args = { | |
3334 | .fh = fhandle, | |
3335 | .bitmask = server->attr_bitmask, | |
3336 | }; | |
d45b2989 BH |
3337 | struct nfs4_pathconf_res res = { |
3338 | .pathconf = pathconf, | |
3339 | }; | |
1da177e4 LT |
3340 | struct rpc_message msg = { |
3341 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3342 | .rpc_argp = &args, | |
d45b2989 | 3343 | .rpc_resp = &res, |
1da177e4 LT |
3344 | }; |
3345 | ||
3346 | /* None of the pathconf attributes are mandatory to implement */ | |
3347 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3348 | memset(pathconf, 0, sizeof(*pathconf)); | |
3349 | return 0; | |
3350 | } | |
3351 | ||
0e574af1 | 3352 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3353 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3354 | } |
3355 | ||
3356 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3357 | struct nfs_pathconf *pathconf) | |
3358 | { | |
3359 | struct nfs4_exception exception = { }; | |
3360 | int err; | |
3361 | ||
3362 | do { | |
3363 | err = nfs4_handle_exception(server, | |
3364 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3365 | &exception); | |
3366 | } while (exception.retry); | |
3367 | return err; | |
3368 | } | |
3369 | ||
d20581aa BH |
3370 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3371 | { | |
cd841605 | 3372 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3373 | } |
3374 | ||
cbdabc7f | 3375 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3376 | { |
cd841605 | 3377 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3378 | |
9e33bed5 | 3379 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3380 | rpc_restart_call_prepare(task); |
ec06c096 | 3381 | return -EAGAIN; |
1da177e4 | 3382 | } |
8850df99 | 3383 | |
d20581aa | 3384 | __nfs4_read_done_cb(data); |
1da177e4 | 3385 | if (task->tk_status > 0) |
ec06c096 TM |
3386 | renew_lease(server, data->timestamp); |
3387 | return 0; | |
1da177e4 LT |
3388 | } |
3389 | ||
cbdabc7f AA |
3390 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3391 | { | |
3392 | ||
3393 | dprintk("--> %s\n", __func__); | |
3394 | ||
3395 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3396 | return -EAGAIN; | |
3397 | ||
d20581aa BH |
3398 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3399 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3400 | } |
3401 | ||
bdc7f021 | 3402 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3403 | { |
1da177e4 | 3404 | data->timestamp = jiffies; |
cbdabc7f | 3405 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3406 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3407 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3408 | } |
3409 | ||
ea7c3303 BS |
3410 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3411 | { | |
cd841605 | 3412 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
ea7c3303 BS |
3413 | &data->args.seq_args, |
3414 | &data->res.seq_res, | |
3415 | task)) | |
3416 | return; | |
3417 | rpc_call_start(task); | |
1da177e4 LT |
3418 | } |
3419 | ||
b029bc9b | 3420 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3421 | { |
cd841605 | 3422 | struct inode *inode = data->header->inode; |
1da177e4 | 3423 | |
9e33bed5 | 3424 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3425 | rpc_restart_call_prepare(task); |
788e7a89 | 3426 | return -EAGAIN; |
1da177e4 | 3427 | } |
4f9838c7 | 3428 | if (task->tk_status >= 0) { |
1da177e4 | 3429 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3430 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3431 | } |
788e7a89 | 3432 | return 0; |
1da177e4 LT |
3433 | } |
3434 | ||
b029bc9b FI |
3435 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3436 | { | |
3437 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3438 | return -EAGAIN; | |
d20581aa BH |
3439 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3440 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3441 | } |
3442 | ||
5a37f851 TM |
3443 | static |
3444 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3445 | { |
5a37f851 TM |
3446 | const struct nfs_pgio_header *hdr = data->header; |
3447 | ||
3448 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3449 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3450 | return false; | |
3451 | /* Otherwise, request attributes if and only if we don't hold | |
3452 | * a delegation | |
3453 | */ | |
011e2a7f | 3454 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3455 | } |
a69aef14 | 3456 | |
bdc7f021 | 3457 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3458 | { |
cd841605 | 3459 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3460 | |
5a37f851 | 3461 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3462 | data->args.bitmask = NULL; |
3463 | data->res.fattr = NULL; | |
3464 | } else | |
3465 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3466 | |
b029bc9b FI |
3467 | if (!data->write_done_cb) |
3468 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3469 | data->res.server = server; |
1da177e4 LT |
3470 | data->timestamp = jiffies; |
3471 | ||
bdc7f021 | 3472 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3473 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3474 | } |
3475 | ||
c6cb80d0 BS |
3476 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3477 | { | |
cd841605 | 3478 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
c6cb80d0 BS |
3479 | &data->args.seq_args, |
3480 | &data->res.seq_res, | |
3481 | task)) | |
3482 | return; | |
3483 | rpc_call_start(task); | |
1da177e4 LT |
3484 | } |
3485 | ||
0b7c0153 | 3486 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 BS |
3487 | { |
3488 | if (nfs4_setup_sequence(NFS_SERVER(data->inode), | |
3489 | &data->args.seq_args, | |
3490 | &data->res.seq_res, | |
3491 | task)) | |
3492 | return; | |
3493 | rpc_call_start(task); | |
1da177e4 LT |
3494 | } |
3495 | ||
0b7c0153 | 3496 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3497 | { |
1da177e4 | 3498 | struct inode *inode = data->inode; |
14516c3a | 3499 | |
9e33bed5 | 3500 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3501 | rpc_restart_call_prepare(task); |
788e7a89 | 3502 | return -EAGAIN; |
1da177e4 | 3503 | } |
788e7a89 | 3504 | return 0; |
1da177e4 LT |
3505 | } |
3506 | ||
0b7c0153 | 3507 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3508 | { |
3509 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3510 | return -EAGAIN; | |
0b7c0153 | 3511 | return data->commit_done_cb(task, data); |
5f452431 FI |
3512 | } |
3513 | ||
0b7c0153 | 3514 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3515 | { |
788e7a89 | 3516 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3517 | |
0b7c0153 FI |
3518 | if (data->commit_done_cb == NULL) |
3519 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3520 | data->res.server = server; |
bdc7f021 | 3521 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3522 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3523 | } |
3524 | ||
9bc4e3ca CL |
3525 | struct nfs4_renewdata { |
3526 | struct nfs_client *client; | |
3527 | unsigned long timestamp; | |
3528 | }; | |
3529 | ||
1da177e4 LT |
3530 | /* |
3531 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3532 | * standalone procedure for queueing an asynchronous RENEW. | |
3533 | */ | |
9bc4e3ca | 3534 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3535 | { |
9bc4e3ca CL |
3536 | struct nfs4_renewdata *data = calldata; |
3537 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3538 | |
0851de06 AB |
3539 | if (atomic_read(&clp->cl_count) > 1) |
3540 | nfs4_schedule_state_renewal(clp); | |
3541 | nfs_put_client(clp); | |
9bc4e3ca | 3542 | kfree(data); |
dc96aef9 AB |
3543 | } |
3544 | ||
9bc4e3ca | 3545 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3546 | { |
9bc4e3ca CL |
3547 | struct nfs4_renewdata *data = calldata; |
3548 | struct nfs_client *clp = data->client; | |
3549 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3550 | |
3551 | if (task->tk_status < 0) { | |
95baa25c | 3552 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3553 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3554 | return; | |
3555 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3556 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3557 | return; |
3558 | } | |
3559 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3560 | } |
452e9352 | 3561 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3562 | } |
3563 | ||
963d8fe5 TM |
3564 | static const struct rpc_call_ops nfs4_renew_ops = { |
3565 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3566 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3567 | }; |
3568 | ||
2f60ea6b | 3569 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3570 | { |
3571 | struct rpc_message msg = { | |
3572 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3573 | .rpc_argp = clp, | |
b4454fe1 | 3574 | .rpc_cred = cred, |
1da177e4 | 3575 | }; |
9bc4e3ca | 3576 | struct nfs4_renewdata *data; |
1da177e4 | 3577 | |
2f60ea6b TM |
3578 | if (renew_flags == 0) |
3579 | return 0; | |
0851de06 AB |
3580 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3581 | return -EIO; | |
b569ad34 | 3582 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3583 | if (data == NULL) |
3584 | return -ENOMEM; | |
3585 | data->client = clp; | |
3586 | data->timestamp = jiffies; | |
1da177e4 | 3587 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3588 | &nfs4_renew_ops, data); |
1da177e4 LT |
3589 | } |
3590 | ||
8534d4ec | 3591 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3592 | { |
3593 | struct rpc_message msg = { | |
3594 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3595 | .rpc_argp = clp, | |
b4454fe1 | 3596 | .rpc_cred = cred, |
1da177e4 LT |
3597 | }; |
3598 | unsigned long now = jiffies; | |
3599 | int status; | |
3600 | ||
3601 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3602 | if (status < 0) | |
3603 | return status; | |
452e9352 | 3604 | do_renew_lease(clp, now); |
1da177e4 LT |
3605 | return 0; |
3606 | } | |
3607 | ||
aa1870af BF |
3608 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3609 | { | |
3610 | return (server->caps & NFS_CAP_ACLS) | |
3611 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3612 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3613 | } | |
3614 | ||
3615 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3616 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3617 | * the stack. | |
3618 | */ | |
3619 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3620 | ||
e9e3d724 NH |
3621 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3622 | struct page **pages, unsigned int *pgbase) | |
3623 | { | |
3624 | struct page *newpage, **spages; | |
3625 | int rc = 0; | |
3626 | size_t len; | |
3627 | spages = pages; | |
3628 | ||
3629 | do { | |
43b7c3f0 | 3630 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3631 | newpage = alloc_page(GFP_KERNEL); |
3632 | ||
3633 | if (newpage == NULL) | |
3634 | goto unwind; | |
3635 | memcpy(page_address(newpage), buf, len); | |
3636 | buf += len; | |
3637 | buflen -= len; | |
3638 | *pages++ = newpage; | |
3639 | rc++; | |
3640 | } while (buflen != 0); | |
3641 | ||
3642 | return rc; | |
3643 | ||
3644 | unwind: | |
3645 | for(; rc > 0; rc--) | |
3646 | __free_page(spages[rc-1]); | |
3647 | return -ENOMEM; | |
3648 | } | |
3649 | ||
e50a1c2e BF |
3650 | struct nfs4_cached_acl { |
3651 | int cached; | |
3652 | size_t len; | |
3e9d4154 | 3653 | char data[0]; |
e50a1c2e BF |
3654 | }; |
3655 | ||
3656 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3657 | { | |
3658 | struct nfs_inode *nfsi = NFS_I(inode); | |
3659 | ||
3660 | spin_lock(&inode->i_lock); | |
3661 | kfree(nfsi->nfs4_acl); | |
3662 | nfsi->nfs4_acl = acl; | |
3663 | spin_unlock(&inode->i_lock); | |
3664 | } | |
3665 | ||
3666 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3667 | { | |
3668 | nfs4_set_cached_acl(inode, NULL); | |
3669 | } | |
3670 | ||
3671 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3672 | { | |
3673 | struct nfs_inode *nfsi = NFS_I(inode); | |
3674 | struct nfs4_cached_acl *acl; | |
3675 | int ret = -ENOENT; | |
3676 | ||
3677 | spin_lock(&inode->i_lock); | |
3678 | acl = nfsi->nfs4_acl; | |
3679 | if (acl == NULL) | |
3680 | goto out; | |
3681 | if (buf == NULL) /* user is just asking for length */ | |
3682 | goto out_len; | |
3683 | if (acl->cached == 0) | |
3684 | goto out; | |
3685 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3686 | if (acl->len > buflen) | |
3687 | goto out; | |
3688 | memcpy(buf, acl->data, acl->len); | |
3689 | out_len: | |
3690 | ret = acl->len; | |
3691 | out: | |
3692 | spin_unlock(&inode->i_lock); | |
3693 | return ret; | |
3694 | } | |
3695 | ||
5794d21e | 3696 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3697 | { |
3698 | struct nfs4_cached_acl *acl; | |
3699 | ||
5794d21e | 3700 | if (pages && acl_len <= PAGE_SIZE) { |
e50a1c2e BF |
3701 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); |
3702 | if (acl == NULL) | |
3703 | goto out; | |
3704 | acl->cached = 1; | |
5794d21e | 3705 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3706 | } else { |
3707 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3708 | if (acl == NULL) | |
3709 | goto out; | |
3710 | acl->cached = 0; | |
3711 | } | |
3712 | acl->len = acl_len; | |
3713 | out: | |
3714 | nfs4_set_cached_acl(inode, acl); | |
3715 | } | |
3716 | ||
bf118a34 AA |
3717 | /* |
3718 | * The getxattr API returns the required buffer length when called with a | |
3719 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3720 | * the required buf. On a NULL buf, we send a page of data to the server | |
3721 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3722 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3723 | * the cache. If not so, we throw away the page, and cache the required | |
3724 | * length. The next getxattr call will then produce another round trip to | |
3725 | * the server, this time with the input buf of the required size. | |
3726 | */ | |
16b4289c | 3727 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3728 | { |
bf118a34 | 3729 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3730 | struct nfs_getaclargs args = { |
3731 | .fh = NFS_FH(inode), | |
3732 | .acl_pages = pages, | |
3733 | .acl_len = buflen, | |
3734 | }; | |
663c79b3 BH |
3735 | struct nfs_getaclres res = { |
3736 | .acl_len = buflen, | |
3737 | }; | |
aa1870af BF |
3738 | struct rpc_message msg = { |
3739 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3740 | .rpc_argp = &args, | |
663c79b3 | 3741 | .rpc_resp = &res, |
aa1870af | 3742 | }; |
bf118a34 | 3743 | int ret = -ENOMEM, npages, i, acl_len = 0; |
aa1870af | 3744 | |
bf118a34 AA |
3745 | npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; |
3746 | /* As long as we're doing a round trip to the server anyway, | |
3747 | * let's be prepared for a page of acl data. */ | |
3748 | if (npages == 0) | |
3749 | npages = 1; | |
3750 | ||
5a006899 SP |
3751 | /* Add an extra page to handle the bitmap returned */ |
3752 | npages++; | |
3753 | ||
bf118a34 AA |
3754 | for (i = 0; i < npages; i++) { |
3755 | pages[i] = alloc_page(GFP_KERNEL); | |
3756 | if (!pages[i]) | |
3757 | goto out_free; | |
e50a1c2e | 3758 | } |
5a006899 SP |
3759 | |
3760 | /* for decoding across pages */ | |
3761 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3762 | if (!res.acl_scratch) | |
3763 | goto out_free; | |
3764 | ||
bf118a34 AA |
3765 | args.acl_len = npages * PAGE_SIZE; |
3766 | args.acl_pgbase = 0; | |
5a006899 | 3767 | |
bf118a34 AA |
3768 | /* Let decode_getfacl know not to fail if the ACL data is larger than |
3769 | * the page we send as a guess */ | |
3770 | if (buf == NULL) | |
3771 | res.acl_flags |= NFS4_ACL_LEN_REQUEST; | |
bf118a34 | 3772 | |
de040bec | 3773 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3774 | __func__, buf, buflen, npages, args.acl_len); |
3775 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3776 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3777 | if (ret) |
3778 | goto out_free; | |
bf118a34 AA |
3779 | |
3780 | acl_len = res.acl_len - res.acl_data_offset; | |
3781 | if (acl_len > args.acl_len) | |
5794d21e | 3782 | nfs4_write_cached_acl(inode, NULL, 0, acl_len); |
e50a1c2e | 3783 | else |
5794d21e | 3784 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, |
bf118a34 | 3785 | acl_len); |
e50a1c2e BF |
3786 | if (buf) { |
3787 | ret = -ERANGE; | |
bf118a34 | 3788 | if (acl_len > buflen) |
e50a1c2e | 3789 | goto out_free; |
bf118a34 | 3790 | _copy_from_pages(buf, pages, res.acl_data_offset, |
20e0fa98 | 3791 | acl_len); |
e50a1c2e | 3792 | } |
bf118a34 | 3793 | ret = acl_len; |
e50a1c2e | 3794 | out_free: |
bf118a34 AA |
3795 | for (i = 0; i < npages; i++) |
3796 | if (pages[i]) | |
3797 | __free_page(pages[i]); | |
331818f1 TM |
3798 | if (res.acl_scratch) |
3799 | __free_page(res.acl_scratch); | |
aa1870af BF |
3800 | return ret; |
3801 | } | |
3802 | ||
16b4289c TM |
3803 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3804 | { | |
3805 | struct nfs4_exception exception = { }; | |
3806 | ssize_t ret; | |
3807 | do { | |
3808 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3809 | if (ret >= 0) | |
3810 | break; | |
3811 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3812 | } while (exception.retry); | |
3813 | return ret; | |
3814 | } | |
3815 | ||
e50a1c2e BF |
3816 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3817 | { | |
3818 | struct nfs_server *server = NFS_SERVER(inode); | |
3819 | int ret; | |
3820 | ||
3821 | if (!nfs4_server_supports_acls(server)) | |
3822 | return -EOPNOTSUPP; | |
3823 | ret = nfs_revalidate_inode(server, inode); | |
3824 | if (ret < 0) | |
3825 | return ret; | |
08a22b39 AK |
3826 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3827 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3828 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3829 | if (ret != -ENOENT) | |
bf118a34 AA |
3830 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3831 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3832 | return ret; |
3833 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3834 | } | |
3835 | ||
16b4289c | 3836 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3837 | { |
3838 | struct nfs_server *server = NFS_SERVER(inode); | |
3839 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3840 | struct nfs_setaclargs arg = { | |
3841 | .fh = NFS_FH(inode), | |
3842 | .acl_pages = pages, | |
3843 | .acl_len = buflen, | |
3844 | }; | |
73c403a9 | 3845 | struct nfs_setaclres res; |
4b580ee3 BF |
3846 | struct rpc_message msg = { |
3847 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3848 | .rpc_argp = &arg, | |
73c403a9 | 3849 | .rpc_resp = &res, |
4b580ee3 | 3850 | }; |
e9e3d724 | 3851 | int ret, i; |
4b580ee3 BF |
3852 | |
3853 | if (!nfs4_server_supports_acls(server)) | |
3854 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3855 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3856 | if (i < 0) | |
3857 | return i; | |
57ec14c5 | 3858 | nfs4_inode_return_delegation(inode); |
7c513058 | 3859 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3860 | |
3861 | /* | |
3862 | * Free each page after tx, so the only ref left is | |
3863 | * held by the network stack | |
3864 | */ | |
3865 | for (; i > 0; i--) | |
3866 | put_page(pages[i-1]); | |
3867 | ||
08a22b39 AK |
3868 | /* |
3869 | * Acl update can result in inode attribute update. | |
3870 | * so mark the attribute cache invalid. | |
3871 | */ | |
3872 | spin_lock(&inode->i_lock); | |
3873 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3874 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3875 | nfs_access_zap_cache(inode); |
3876 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3877 | return ret; |
3878 | } | |
3879 | ||
16b4289c TM |
3880 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3881 | { | |
3882 | struct nfs4_exception exception = { }; | |
3883 | int err; | |
3884 | do { | |
3885 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3886 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3887 | &exception); | |
3888 | } while (exception.retry); | |
3889 | return err; | |
3890 | } | |
3891 | ||
1da177e4 | 3892 | static int |
aa5190d0 | 3893 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3894 | { |
aa5190d0 TM |
3895 | struct nfs_client *clp = server->nfs_client; |
3896 | ||
3897 | if (task->tk_status >= 0) | |
1da177e4 LT |
3898 | return 0; |
3899 | switch(task->tk_status) { | |
a1d0b5ee | 3900 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
3901 | case -NFS4ERR_ADMIN_REVOKED: |
3902 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
3903 | if (state == NULL) |
3904 | break; | |
3905 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
3906 | case -NFS4ERR_OPENMODE: |
3907 | if (state == NULL) | |
3908 | break; | |
0400a6b0 TM |
3909 | nfs4_schedule_stateid_recovery(server, state); |
3910 | goto wait_on_recovery; | |
0ced63d1 TM |
3911 | case -NFS4ERR_EXPIRED: |
3912 | if (state != NULL) | |
3913 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3914 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3915 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3916 | nfs4_schedule_lease_recovery(clp); |
3917 | goto wait_on_recovery; | |
4745e315 AA |
3918 | #if defined(CONFIG_NFS_V4_1) |
3919 | case -NFS4ERR_BADSESSION: | |
3920 | case -NFS4ERR_BADSLOT: | |
3921 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3922 | case -NFS4ERR_DEADSESSION: | |
3923 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3924 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3925 | case -NFS4ERR_SEQ_MISORDERED: | |
3926 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3927 | task->tk_status); | |
9f594791 | 3928 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
3929 | task->tk_status = 0; |
3930 | return -EAGAIN; | |
3931 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3932 | case -NFS4ERR_DELAY: |
aa5190d0 | 3933 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3934 | case -NFS4ERR_GRACE: |
2c643488 | 3935 | case -EKEYEXPIRED: |
1da177e4 LT |
3936 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3937 | task->tk_status = 0; | |
3938 | return -EAGAIN; | |
a8a4ae3a | 3939 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3940 | case -NFS4ERR_OLD_STATEID: |
3941 | task->tk_status = 0; | |
3942 | return -EAGAIN; | |
3943 | } | |
3944 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3945 | return 0; | |
0400a6b0 | 3946 | wait_on_recovery: |
a2c0b9e2 | 3947 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3948 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3949 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3950 | task->tk_status = 0; | |
3951 | return -EAGAIN; | |
1da177e4 LT |
3952 | } |
3953 | ||
f092075d CL |
3954 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
3955 | nfs4_verifier *bootverf) | |
cd93710e CL |
3956 | { |
3957 | __be32 verf[2]; | |
3958 | ||
2c820d9a CL |
3959 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
3960 | /* An impossible timestamp guarantees this value | |
3961 | * will never match a generated boot time. */ | |
3962 | verf[0] = 0; | |
3963 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
3964 | } else { | |
f092075d CL |
3965 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
3966 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
3967 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 3968 | } |
cd93710e CL |
3969 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
3970 | } | |
3971 | ||
bb8b27e5 TM |
3972 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3973 | unsigned short port, struct rpc_cred *cred, | |
3974 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3975 | { |
3976 | nfs4_verifier sc_verifier; | |
3977 | struct nfs4_setclientid setclientid = { | |
3978 | .sc_verifier = &sc_verifier, | |
3979 | .sc_prog = program, | |
f4eecd5d | 3980 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3981 | }; |
3982 | struct rpc_message msg = { | |
3983 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3984 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3985 | .rpc_resp = res, |
286d7d6a | 3986 | .rpc_cred = cred, |
1da177e4 | 3987 | }; |
1da177e4 LT |
3988 | int loop = 0; |
3989 | int status; | |
3990 | ||
f092075d | 3991 | nfs4_init_boot_verifier(clp, &sc_verifier); |
1da177e4 LT |
3992 | |
3993 | for(;;) { | |
2446ab60 | 3994 | rcu_read_lock(); |
1da177e4 | 3995 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, |
69dd716c | 3996 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3997 | clp->cl_ipaddr, |
3998 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3999 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
4000 | rpc_peeraddr2str(clp->cl_rpcclient, |
4001 | RPC_DISPLAY_PROTO), | |
78ea323b | 4002 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
4003 | clp->cl_id_uniquifier); |
4004 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
4005 | sizeof(setclientid.sc_netid), |
4006 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4007 | RPC_DISPLAY_NETID)); | |
1da177e4 | 4008 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 4009 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 | 4010 | clp->cl_ipaddr, port >> 8, port & 255); |
2446ab60 | 4011 | rcu_read_unlock(); |
1da177e4 | 4012 | |
1bd714f2 | 4013 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4014 | if (status != -NFS4ERR_CLID_INUSE) |
4015 | break; | |
fd954ae1 TM |
4016 | if (loop != 0) { |
4017 | ++clp->cl_id_uniquifier; | |
1da177e4 | 4018 | break; |
fd954ae1 TM |
4019 | } |
4020 | ++loop; | |
4021 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
4022 | } |
4023 | return status; | |
4024 | } | |
4025 | ||
fd954ae1 | 4026 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4027 | struct nfs4_setclientid_res *arg, |
4028 | struct rpc_cred *cred) | |
1da177e4 LT |
4029 | { |
4030 | struct nfs_fsinfo fsinfo; | |
4031 | struct rpc_message msg = { | |
4032 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4033 | .rpc_argp = arg, |
1da177e4 | 4034 | .rpc_resp = &fsinfo, |
286d7d6a | 4035 | .rpc_cred = cred, |
1da177e4 LT |
4036 | }; |
4037 | unsigned long now; | |
4038 | int status; | |
4039 | ||
4040 | now = jiffies; | |
1bd714f2 | 4041 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4042 | if (status == 0) { |
4043 | spin_lock(&clp->cl_lock); | |
4044 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4045 | clp->cl_last_renewal = now; | |
4046 | spin_unlock(&clp->cl_lock); | |
4047 | } | |
4048 | return status; | |
4049 | } | |
4050 | ||
fe650407 TM |
4051 | struct nfs4_delegreturndata { |
4052 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4053 | struct nfs4_delegreturnres res; |
fe650407 TM |
4054 | struct nfs_fh fh; |
4055 | nfs4_stateid stateid; | |
26e976a8 | 4056 | unsigned long timestamp; |
fa178f29 | 4057 | struct nfs_fattr fattr; |
fe650407 TM |
4058 | int rpc_status; |
4059 | }; | |
4060 | ||
fe650407 TM |
4061 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4062 | { | |
4063 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4064 | |
14516c3a TM |
4065 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4066 | return; | |
938e1010 | 4067 | |
79708861 RL |
4068 | switch (task->tk_status) { |
4069 | case -NFS4ERR_STALE_STATEID: | |
4070 | case -NFS4ERR_EXPIRED: | |
4071 | case 0: | |
fa178f29 | 4072 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4073 | break; |
4074 | default: | |
4075 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4076 | -EAGAIN) { | |
d00c5d43 | 4077 | rpc_restart_call_prepare(task); |
79708861 RL |
4078 | return; |
4079 | } | |
4080 | } | |
4081 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4082 | } |
4083 | ||
4084 | static void nfs4_delegreturn_release(void *calldata) | |
4085 | { | |
fe650407 TM |
4086 | kfree(calldata); |
4087 | } | |
4088 | ||
938e1010 AA |
4089 | #if defined(CONFIG_NFS_V4_1) |
4090 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4091 | { | |
4092 | struct nfs4_delegreturndata *d_data; | |
4093 | ||
4094 | d_data = (struct nfs4_delegreturndata *)data; | |
4095 | ||
035168ab | 4096 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 4097 | &d_data->args.seq_args, |
9d12b216 | 4098 | &d_data->res.seq_res, task)) |
938e1010 AA |
4099 | return; |
4100 | rpc_call_start(task); | |
4101 | } | |
4102 | #endif /* CONFIG_NFS_V4_1 */ | |
4103 | ||
c8d149f3 | 4104 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4105 | #if defined(CONFIG_NFS_V4_1) |
4106 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4107 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4108 | .rpc_call_done = nfs4_delegreturn_done, |
4109 | .rpc_release = nfs4_delegreturn_release, | |
4110 | }; | |
4111 | ||
e6f81075 | 4112 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4113 | { |
4114 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4115 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4116 | struct rpc_task *task; |
5138fde0 TM |
4117 | struct rpc_message msg = { |
4118 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4119 | .rpc_cred = cred, | |
4120 | }; | |
c970aa85 TM |
4121 | struct rpc_task_setup task_setup_data = { |
4122 | .rpc_client = server->client, | |
5138fde0 | 4123 | .rpc_message = &msg, |
c970aa85 TM |
4124 | .callback_ops = &nfs4_delegreturn_ops, |
4125 | .flags = RPC_TASK_ASYNC, | |
4126 | }; | |
e6f81075 | 4127 | int status = 0; |
fe650407 | 4128 | |
8535b2be | 4129 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4130 | if (data == NULL) |
4131 | return -ENOMEM; | |
9d12b216 | 4132 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4133 | data->args.fhandle = &data->fh; |
4134 | data->args.stateid = &data->stateid; | |
9e907fec | 4135 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4136 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4137 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4138 | data->res.fattr = &data->fattr; |
4139 | data->res.server = server; | |
5138fde0 | 4140 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4141 | data->timestamp = jiffies; |
fe650407 TM |
4142 | data->rpc_status = 0; |
4143 | ||
c970aa85 | 4144 | task_setup_data.callback_data = data; |
1174dd1f TM |
4145 | msg.rpc_argp = &data->args; |
4146 | msg.rpc_resp = &data->res; | |
c970aa85 | 4147 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4148 | if (IS_ERR(task)) |
fe650407 | 4149 | return PTR_ERR(task); |
e6f81075 TM |
4150 | if (!issync) |
4151 | goto out; | |
fe650407 | 4152 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4153 | if (status != 0) |
4154 | goto out; | |
4155 | status = data->rpc_status; | |
e144cbcc TM |
4156 | if (status == 0) |
4157 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4158 | else | |
4159 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4160 | out: |
e6b3c4db | 4161 | rpc_put_task(task); |
fe650407 | 4162 | return status; |
1da177e4 LT |
4163 | } |
4164 | ||
e6f81075 | 4165 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4166 | { |
4167 | struct nfs_server *server = NFS_SERVER(inode); | |
4168 | struct nfs4_exception exception = { }; | |
4169 | int err; | |
4170 | do { | |
e6f81075 | 4171 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4172 | switch (err) { |
4173 | case -NFS4ERR_STALE_STATEID: | |
4174 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4175 | case 0: |
4176 | return 0; | |
4177 | } | |
4178 | err = nfs4_handle_exception(server, err, &exception); | |
4179 | } while (exception.retry); | |
4180 | return err; | |
4181 | } | |
4182 | ||
4183 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4184 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4185 | ||
4186 | /* | |
4187 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4188 | */ | |
4189 | static unsigned long | |
4190 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4191 | { | |
d310310c | 4192 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4193 | timeout <<= 1; |
4194 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4195 | return NFS4_LOCK_MAXTIMEOUT; | |
4196 | return timeout; | |
4197 | } | |
4198 | ||
1da177e4 LT |
4199 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4200 | { | |
4201 | struct inode *inode = state->inode; | |
4202 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4203 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4204 | struct nfs_lockt_args arg = { |
1da177e4 | 4205 | .fh = NFS_FH(inode), |
911d1aaf | 4206 | .fl = request, |
1da177e4 | 4207 | }; |
911d1aaf TM |
4208 | struct nfs_lockt_res res = { |
4209 | .denied = request, | |
1da177e4 LT |
4210 | }; |
4211 | struct rpc_message msg = { | |
4212 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4213 | .rpc_argp = &arg, | |
4214 | .rpc_resp = &res, | |
4215 | .rpc_cred = state->owner->so_cred, | |
4216 | }; | |
1da177e4 LT |
4217 | struct nfs4_lock_state *lsp; |
4218 | int status; | |
4219 | ||
911d1aaf | 4220 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4221 | status = nfs4_set_lock_state(state, request); |
4222 | if (status != 0) | |
4223 | goto out; | |
4224 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4225 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4226 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4227 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4228 | switch (status) { |
4229 | case 0: | |
4230 | request->fl_type = F_UNLCK; | |
4231 | break; | |
4232 | case -NFS4ERR_DENIED: | |
4233 | status = 0; | |
1da177e4 | 4234 | } |
70cc6487 | 4235 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4236 | out: |
1da177e4 LT |
4237 | return status; |
4238 | } | |
4239 | ||
4240 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4241 | { | |
4242 | struct nfs4_exception exception = { }; | |
4243 | int err; | |
4244 | ||
4245 | do { | |
4246 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4247 | _nfs4_proc_getlk(state, cmd, request), | |
4248 | &exception); | |
4249 | } while (exception.retry); | |
4250 | return err; | |
4251 | } | |
4252 | ||
4253 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4254 | { | |
4255 | int res = 0; | |
4256 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4257 | case FL_POSIX: | |
4258 | res = posix_lock_file_wait(file, fl); | |
4259 | break; | |
4260 | case FL_FLOCK: | |
4261 | res = flock_lock_file_wait(file, fl); | |
4262 | break; | |
4263 | default: | |
4264 | BUG(); | |
4265 | } | |
1da177e4 LT |
4266 | return res; |
4267 | } | |
4268 | ||
faf5f49c | 4269 | struct nfs4_unlockdata { |
911d1aaf TM |
4270 | struct nfs_locku_args arg; |
4271 | struct nfs_locku_res res; | |
faf5f49c TM |
4272 | struct nfs4_lock_state *lsp; |
4273 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4274 | struct file_lock fl; |
4275 | const struct nfs_server *server; | |
26e976a8 | 4276 | unsigned long timestamp; |
faf5f49c TM |
4277 | }; |
4278 | ||
911d1aaf TM |
4279 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4280 | struct nfs_open_context *ctx, | |
4281 | struct nfs4_lock_state *lsp, | |
4282 | struct nfs_seqid *seqid) | |
4283 | { | |
4284 | struct nfs4_unlockdata *p; | |
4285 | struct inode *inode = lsp->ls_state->inode; | |
4286 | ||
8535b2be | 4287 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4288 | if (p == NULL) |
4289 | return NULL; | |
4290 | p->arg.fh = NFS_FH(inode); | |
4291 | p->arg.fl = &p->fl; | |
4292 | p->arg.seqid = seqid; | |
c1d51931 | 4293 | p->res.seqid = seqid; |
911d1aaf TM |
4294 | p->arg.stateid = &lsp->ls_stateid; |
4295 | p->lsp = lsp; | |
4296 | atomic_inc(&lsp->ls_count); | |
4297 | /* Ensure we don't close file until we're done freeing locks! */ | |
4298 | p->ctx = get_nfs_open_context(ctx); | |
4299 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4300 | p->server = NFS_SERVER(inode); | |
4301 | return p; | |
4302 | } | |
4303 | ||
06f814a3 | 4304 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4305 | { |
963d8fe5 | 4306 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4307 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4308 | nfs4_put_lock_state(calldata->lsp); |
4309 | put_nfs_open_context(calldata->ctx); | |
4310 | kfree(calldata); | |
faf5f49c TM |
4311 | } |
4312 | ||
963d8fe5 | 4313 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4314 | { |
963d8fe5 | 4315 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4316 | |
14516c3a TM |
4317 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4318 | return; | |
faf5f49c TM |
4319 | switch (task->tk_status) { |
4320 | case 0: | |
f597c537 TM |
4321 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4322 | &calldata->res.stateid); | |
26e976a8 | 4323 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4324 | break; |
9e33bed5 TM |
4325 | case -NFS4ERR_BAD_STATEID: |
4326 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4327 | case -NFS4ERR_STALE_STATEID: |
4328 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4329 | break; |
4330 | default: | |
9e33bed5 | 4331 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4332 | rpc_restart_call_prepare(task); |
faf5f49c | 4333 | } |
faf5f49c TM |
4334 | } |
4335 | ||
4ce70ada | 4336 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4337 | { |
4ce70ada | 4338 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4339 | |
911d1aaf | 4340 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4341 | return; |
4342 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4343 | /* Note: exit _without_ running nfs4_locku_done */ |
4344 | task->tk_action = NULL; | |
faf5f49c TM |
4345 | return; |
4346 | } | |
26e976a8 | 4347 | calldata->timestamp = jiffies; |
035168ab | 4348 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4349 | &calldata->arg.seq_args, |
9d12b216 | 4350 | &calldata->res.seq_res, task)) |
a893693c | 4351 | return; |
5138fde0 | 4352 | rpc_call_start(task); |
faf5f49c TM |
4353 | } |
4354 | ||
963d8fe5 | 4355 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4356 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4357 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4358 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4359 | }; |
4360 | ||
a5d16a4d TM |
4361 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4362 | struct nfs_open_context *ctx, | |
4363 | struct nfs4_lock_state *lsp, | |
4364 | struct nfs_seqid *seqid) | |
4365 | { | |
4366 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4367 | struct rpc_message msg = { |
4368 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4369 | .rpc_cred = ctx->cred, | |
4370 | }; | |
c970aa85 TM |
4371 | struct rpc_task_setup task_setup_data = { |
4372 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4373 | .rpc_message = &msg, |
c970aa85 | 4374 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4375 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4376 | .flags = RPC_TASK_ASYNC, |
4377 | }; | |
a5d16a4d | 4378 | |
137d6aca FF |
4379 | /* Ensure this is an unlock - when canceling a lock, the |
4380 | * canceled lock is passed in, and it won't be an unlock. | |
4381 | */ | |
4382 | fl->fl_type = F_UNLCK; | |
4383 | ||
a5d16a4d TM |
4384 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4385 | if (data == NULL) { | |
4386 | nfs_free_seqid(seqid); | |
4387 | return ERR_PTR(-ENOMEM); | |
4388 | } | |
4389 | ||
9d12b216 | 4390 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4391 | msg.rpc_argp = &data->arg; |
4392 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4393 | task_setup_data.callback_data = data; |
4394 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4395 | } |
4396 | ||
faf5f49c TM |
4397 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4398 | { | |
19e03c57 | 4399 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4400 | struct nfs_seqid *seqid; |
1da177e4 | 4401 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4402 | struct rpc_task *task; |
4403 | int status = 0; | |
536ff0f8 | 4404 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4405 | |
8d0a8a9d | 4406 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4407 | /* Unlock _before_ we do the RPC call */ |
4408 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4409 | down_read(&nfsi->rwsem); |
4410 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4411 | up_read(&nfsi->rwsem); | |
9b073574 | 4412 | goto out; |
19e03c57 TM |
4413 | } |
4414 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4415 | if (status != 0) |
9b073574 TM |
4416 | goto out; |
4417 | /* Is this a delegated lock? */ | |
4418 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4419 | goto out; | |
8d0a8a9d | 4420 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4421 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4422 | status = -ENOMEM; |
911d1aaf | 4423 | if (seqid == NULL) |
9b073574 | 4424 | goto out; |
cd3758e3 | 4425 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4426 | status = PTR_ERR(task); |
4427 | if (IS_ERR(task)) | |
9b073574 | 4428 | goto out; |
a5d16a4d | 4429 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4430 | rpc_put_task(task); |
9b073574 | 4431 | out: |
536ff0f8 | 4432 | request->fl_flags = fl_flags; |
1da177e4 LT |
4433 | return status; |
4434 | } | |
4435 | ||
a5d16a4d TM |
4436 | struct nfs4_lockdata { |
4437 | struct nfs_lock_args arg; | |
4438 | struct nfs_lock_res res; | |
4439 | struct nfs4_lock_state *lsp; | |
4440 | struct nfs_open_context *ctx; | |
4441 | struct file_lock fl; | |
26e976a8 | 4442 | unsigned long timestamp; |
a5d16a4d TM |
4443 | int rpc_status; |
4444 | int cancelled; | |
66179efe | 4445 | struct nfs_server *server; |
a5d16a4d TM |
4446 | }; |
4447 | ||
4448 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4449 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4450 | gfp_t gfp_mask) | |
1da177e4 | 4451 | { |
a5d16a4d TM |
4452 | struct nfs4_lockdata *p; |
4453 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4454 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4455 | |
8535b2be | 4456 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4457 | if (p == NULL) |
4458 | return NULL; | |
4459 | ||
4460 | p->arg.fh = NFS_FH(inode); | |
4461 | p->arg.fl = &p->fl; | |
8535b2be | 4462 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4463 | if (p->arg.open_seqid == NULL) |
4464 | goto out_free; | |
8535b2be | 4465 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4466 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4467 | goto out_free_seqid; |
a5d16a4d | 4468 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4469 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4470 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4471 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4472 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4473 | p->lsp = lsp; |
66179efe | 4474 | p->server = server; |
a5d16a4d TM |
4475 | atomic_inc(&lsp->ls_count); |
4476 | p->ctx = get_nfs_open_context(ctx); | |
4477 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4478 | return p; | |
2f74c0a0 TM |
4479 | out_free_seqid: |
4480 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4481 | out_free: |
4482 | kfree(p); | |
4483 | return NULL; | |
4484 | } | |
4485 | ||
4486 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4487 | { | |
4488 | struct nfs4_lockdata *data = calldata; | |
4489 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4490 | |
3110ff80 | 4491 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4492 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4493 | return; | |
a5d16a4d TM |
4494 | /* Do we need to do an open_to_lock_owner? */ |
4495 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4496 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4497 | return; | |
a5d16a4d TM |
4498 | data->arg.open_stateid = &state->stateid; |
4499 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4500 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4501 | } else |
4502 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4503 | data->timestamp = jiffies; |
035168ab TM |
4504 | if (nfs4_setup_sequence(data->server, |
4505 | &data->arg.seq_args, | |
9d12b216 | 4506 | &data->res.seq_res, task)) |
66179efe | 4507 | return; |
5138fde0 | 4508 | rpc_call_start(task); |
3110ff80 | 4509 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4510 | } |
4511 | ||
b257957e AB |
4512 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4513 | { | |
4514 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4515 | nfs4_lock_prepare(task, calldata); | |
4516 | } | |
4517 | ||
a5d16a4d TM |
4518 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4519 | { | |
4520 | struct nfs4_lockdata *data = calldata; | |
4521 | ||
3110ff80 | 4522 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4523 | |
14516c3a TM |
4524 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4525 | return; | |
66179efe | 4526 | |
a5d16a4d | 4527 | data->rpc_status = task->tk_status; |
a5d16a4d | 4528 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4529 | if (data->rpc_status == 0) |
4530 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4531 | else | |
4532 | goto out; | |
4533 | } | |
4534 | if (data->rpc_status == 0) { | |
f597c537 | 4535 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
a5d16a4d | 4536 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; |
3d4ff43d | 4537 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4538 | } |
a5d16a4d | 4539 | out: |
3110ff80 | 4540 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4541 | } |
4542 | ||
4543 | static void nfs4_lock_release(void *calldata) | |
4544 | { | |
4545 | struct nfs4_lockdata *data = calldata; | |
4546 | ||
3110ff80 | 4547 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4548 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4549 | if (data->cancelled != 0) { |
4550 | struct rpc_task *task; | |
4551 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4552 | data->arg.lock_seqid); | |
4553 | if (!IS_ERR(task)) | |
bf294b41 | 4554 | rpc_put_task_async(task); |
3110ff80 | 4555 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4556 | } else |
4557 | nfs_free_seqid(data->arg.lock_seqid); | |
4558 | nfs4_put_lock_state(data->lsp); | |
4559 | put_nfs_open_context(data->ctx); | |
4560 | kfree(data); | |
3110ff80 | 4561 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4562 | } |
4563 | ||
4564 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4565 | .rpc_call_prepare = nfs4_lock_prepare, | |
4566 | .rpc_call_done = nfs4_lock_done, | |
4567 | .rpc_release = nfs4_lock_release, | |
4568 | }; | |
4569 | ||
b257957e AB |
4570 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4571 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4572 | .rpc_call_done = nfs4_lock_done, | |
4573 | .rpc_release = nfs4_lock_release, | |
4574 | }; | |
4575 | ||
2bee72a6 TM |
4576 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4577 | { | |
2bee72a6 TM |
4578 | switch (error) { |
4579 | case -NFS4ERR_ADMIN_REVOKED: | |
4580 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4581 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4582 | if (new_lock_owner != 0 || |
4583 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4584 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4585 | break; |
4586 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4587 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4588 | case -NFS4ERR_EXPIRED: |
4589 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4590 | }; |
4591 | } | |
4592 | ||
afe6c27c | 4593 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4594 | { |
4595 | struct nfs4_lockdata *data; | |
4596 | struct rpc_task *task; | |
5138fde0 TM |
4597 | struct rpc_message msg = { |
4598 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4599 | .rpc_cred = state->owner->so_cred, | |
4600 | }; | |
c970aa85 TM |
4601 | struct rpc_task_setup task_setup_data = { |
4602 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4603 | .rpc_message = &msg, |
c970aa85 | 4604 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4605 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4606 | .flags = RPC_TASK_ASYNC, |
4607 | }; | |
a5d16a4d TM |
4608 | int ret; |
4609 | ||
3110ff80 | 4610 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4611 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4612 | fl->fl_u.nfs4_fl.owner, |
4613 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4614 | if (data == NULL) |
4615 | return -ENOMEM; | |
4616 | if (IS_SETLKW(cmd)) | |
4617 | data->arg.block = 1; | |
b257957e AB |
4618 | if (recovery_type > NFS_LOCK_NEW) { |
4619 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4620 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4621 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4622 | } | |
9d12b216 | 4623 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4624 | msg.rpc_argp = &data->arg; |
4625 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4626 | task_setup_data.callback_data = data; |
4627 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4628 | if (IS_ERR(task)) |
a5d16a4d | 4629 | return PTR_ERR(task); |
a5d16a4d TM |
4630 | ret = nfs4_wait_for_completion_rpc_task(task); |
4631 | if (ret == 0) { | |
4632 | ret = data->rpc_status; | |
2bee72a6 TM |
4633 | if (ret) |
4634 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4635 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4636 | } else |
4637 | data->cancelled = 1; | |
e6b3c4db | 4638 | rpc_put_task(task); |
3110ff80 | 4639 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4640 | return ret; |
1da177e4 LT |
4641 | } |
4642 | ||
4643 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4644 | { | |
202b50dc | 4645 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4646 | struct nfs4_exception exception = { |
4647 | .inode = state->inode, | |
4648 | }; | |
202b50dc TM |
4649 | int err; |
4650 | ||
4651 | do { | |
42a2d13e TM |
4652 | /* Cache the lock if possible... */ |
4653 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4654 | return 0; | |
afe6c27c | 4655 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4656 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4657 | break; |
4658 | nfs4_handle_exception(server, err, &exception); | |
4659 | } while (exception.retry); | |
4660 | return err; | |
1da177e4 LT |
4661 | } |
4662 | ||
4663 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4664 | { | |
202b50dc | 4665 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4666 | struct nfs4_exception exception = { |
4667 | .inode = state->inode, | |
4668 | }; | |
202b50dc TM |
4669 | int err; |
4670 | ||
6bfc93ef TM |
4671 | err = nfs4_set_lock_state(state, request); |
4672 | if (err != 0) | |
4673 | return err; | |
202b50dc | 4674 | do { |
42a2d13e TM |
4675 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4676 | return 0; | |
afe6c27c | 4677 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4678 | switch (err) { |
4679 | default: | |
4680 | goto out; | |
4681 | case -NFS4ERR_GRACE: | |
4682 | case -NFS4ERR_DELAY: | |
4683 | nfs4_handle_exception(server, err, &exception); | |
4684 | err = 0; | |
4685 | } | |
202b50dc | 4686 | } while (exception.retry); |
a9ed2e25 | 4687 | out: |
202b50dc | 4688 | return err; |
1da177e4 LT |
4689 | } |
4690 | ||
f062eb6c | 4691 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 | 4692 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4693 | { |
eb64cf96 | 4694 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 4695 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
4696 | struct nfs_server *server = NFS_SERVER(state->inode); |
4697 | ||
b01dd1d8 BS |
4698 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
4699 | if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { | |
4700 | status = nfs41_test_stateid(server, &lsp->ls_stateid); | |
4701 | if (status != NFS_OK) { | |
89af2739 CL |
4702 | if (status != -NFS4ERR_BAD_STATEID) |
4703 | nfs41_free_stateid(server, | |
4704 | &lsp->ls_stateid); | |
b01dd1d8 BS |
4705 | lsp->ls_flags &= ~NFS_LOCK_INITIALIZED; |
4706 | ret = status; | |
4707 | } | |
4708 | } | |
4709 | }; | |
4710 | ||
4711 | return ret; | |
4712 | } | |
4713 | ||
4714 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4715 | { | |
4716 | int status = NFS_OK; | |
4717 | ||
4718 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4719 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
4720 | if (status != NFS_OK) |
4721 | status = nfs4_lock_expired(state, request); | |
4722 | return status; | |
f062eb6c BS |
4723 | } |
4724 | #endif | |
4725 | ||
1da177e4 LT |
4726 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4727 | { | |
19e03c57 | 4728 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4729 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4730 | int status = -ENOLCK; |
1da177e4 | 4731 | |
8e469ebd TM |
4732 | if ((fl_flags & FL_POSIX) && |
4733 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4734 | goto out; | |
6bfc93ef | 4735 | /* Is this a delegated open? */ |
6bfc93ef TM |
4736 | status = nfs4_set_lock_state(state, request); |
4737 | if (status != 0) | |
4738 | goto out; | |
01c3b861 TM |
4739 | request->fl_flags |= FL_ACCESS; |
4740 | status = do_vfs_lock(request->fl_file, request); | |
4741 | if (status < 0) | |
4742 | goto out; | |
19e03c57 | 4743 | down_read(&nfsi->rwsem); |
01c3b861 | 4744 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4745 | /* Yes: cache locks! */ |
01c3b861 | 4746 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4747 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4748 | status = do_vfs_lock(request->fl_file, request); | |
4749 | goto out_unlock; | |
01c3b861 | 4750 | } |
afe6c27c | 4751 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4752 | if (status != 0) |
01c3b861 | 4753 | goto out_unlock; |
6bfc93ef | 4754 | /* Note: we always want to sleep here! */ |
01c3b861 | 4755 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4756 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4757 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4758 | "manager!\n", __func__); | |
01c3b861 | 4759 | out_unlock: |
19e03c57 | 4760 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4761 | out: |
4762 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4763 | return status; |
4764 | } | |
4765 | ||
4766 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4767 | { | |
a1d0b5ee TM |
4768 | struct nfs4_exception exception = { |
4769 | .state = state, | |
05ffe24f | 4770 | .inode = state->inode, |
a1d0b5ee | 4771 | }; |
1da177e4 LT |
4772 | int err; |
4773 | ||
4774 | do { | |
965b5d67 TM |
4775 | err = _nfs4_proc_setlk(state, cmd, request); |
4776 | if (err == -NFS4ERR_DENIED) | |
4777 | err = -EAGAIN; | |
1da177e4 | 4778 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4779 | err, &exception); |
1da177e4 LT |
4780 | } while (exception.retry); |
4781 | return err; | |
4782 | } | |
4783 | ||
4784 | static int | |
4785 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4786 | { | |
4787 | struct nfs_open_context *ctx; | |
4788 | struct nfs4_state *state; | |
4789 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4790 | int status; | |
4791 | ||
4792 | /* verify open state */ | |
cd3758e3 | 4793 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4794 | state = ctx->state; |
4795 | ||
4796 | if (request->fl_start < 0 || request->fl_end < 0) | |
4797 | return -EINVAL; | |
4798 | ||
d953126a TM |
4799 | if (IS_GETLK(cmd)) { |
4800 | if (state != NULL) | |
4801 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4802 | return 0; | |
4803 | } | |
1da177e4 LT |
4804 | |
4805 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4806 | return -EINVAL; | |
4807 | ||
d953126a TM |
4808 | if (request->fl_type == F_UNLCK) { |
4809 | if (state != NULL) | |
4810 | return nfs4_proc_unlck(state, cmd, request); | |
4811 | return 0; | |
4812 | } | |
1da177e4 | 4813 | |
d953126a TM |
4814 | if (state == NULL) |
4815 | return -ENOLCK; | |
55725513 TM |
4816 | /* |
4817 | * Don't rely on the VFS having checked the file open mode, | |
4818 | * since it won't do this for flock() locks. | |
4819 | */ | |
4820 | switch (request->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) { | |
4821 | case F_RDLCK: | |
4822 | if (!(filp->f_mode & FMODE_READ)) | |
4823 | return -EBADF; | |
4824 | break; | |
4825 | case F_WRLCK: | |
4826 | if (!(filp->f_mode & FMODE_WRITE)) | |
4827 | return -EBADF; | |
4828 | } | |
4829 | ||
1da177e4 LT |
4830 | do { |
4831 | status = nfs4_proc_setlk(state, cmd, request); | |
4832 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4833 | break; | |
4834 | timeout = nfs4_set_lock_task_retry(timeout); | |
4835 | status = -ERESTARTSYS; | |
4836 | if (signalled()) | |
4837 | break; | |
4838 | } while(status < 0); | |
1da177e4 LT |
4839 | return status; |
4840 | } | |
4841 | ||
888e694c TM |
4842 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4843 | { | |
4844 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4845 | struct nfs4_exception exception = { }; | |
4846 | int err; | |
4847 | ||
4848 | err = nfs4_set_lock_state(state, fl); | |
4849 | if (err != 0) | |
4850 | goto out; | |
4851 | do { | |
afe6c27c | 4852 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4853 | switch (err) { |
4854 | default: | |
a030889a WAA |
4855 | printk(KERN_ERR "NFS: %s: unhandled error " |
4856 | "%d.\n", __func__, err); | |
d5122201 | 4857 | case 0: |
965b5d67 | 4858 | case -ESTALE: |
d5122201 TM |
4859 | goto out; |
4860 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4861 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4862 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4863 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4864 | nfs4_schedule_lease_recovery(server->nfs_client); |
4865 | goto out; | |
74e7bb73 RL |
4866 | case -NFS4ERR_BADSESSION: |
4867 | case -NFS4ERR_BADSLOT: | |
4868 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4869 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4870 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 4871 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
d5122201 | 4872 | goto out; |
965b5d67 TM |
4873 | case -ERESTARTSYS: |
4874 | /* | |
4875 | * The show must go on: exit, but mark the | |
4876 | * stateid as needing recovery. | |
4877 | */ | |
a1d0b5ee | 4878 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
4879 | case -NFS4ERR_ADMIN_REVOKED: |
4880 | case -NFS4ERR_BAD_STATEID: | |
4881 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4882 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4883 | err = 0; |
4884 | goto out; | |
168667c4 TM |
4885 | case -EKEYEXPIRED: |
4886 | /* | |
4887 | * User RPCSEC_GSS context has expired. | |
4888 | * We cannot recover this stateid now, so | |
4889 | * skip it and allow recovery thread to | |
4890 | * proceed. | |
4891 | */ | |
4892 | err = 0; | |
4893 | goto out; | |
965b5d67 TM |
4894 | case -ENOMEM: |
4895 | case -NFS4ERR_DENIED: | |
4896 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4897 | err = 0; | |
4898 | goto out; | |
d5122201 TM |
4899 | case -NFS4ERR_DELAY: |
4900 | break; | |
4901 | } | |
888e694c TM |
4902 | err = nfs4_handle_exception(server, err, &exception); |
4903 | } while (exception.retry); | |
4904 | out: | |
4905 | return err; | |
4906 | } | |
6b3b5496 | 4907 | |
cf470c3e TM |
4908 | struct nfs_release_lockowner_data { |
4909 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 4910 | struct nfs_server *server; |
cf470c3e TM |
4911 | struct nfs_release_lockowner_args args; |
4912 | }; | |
4913 | ||
d3c7b7cc TM |
4914 | static void nfs4_release_lockowner_release(void *calldata) |
4915 | { | |
cf470c3e | 4916 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 4917 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
4918 | kfree(calldata); |
4919 | } | |
4920 | ||
17280175 | 4921 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
4922 | .rpc_release = nfs4_release_lockowner_release, |
4923 | }; | |
4924 | ||
cf470c3e | 4925 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
4926 | { |
4927 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 4928 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
4929 | struct rpc_message msg = { |
4930 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4931 | }; | |
4932 | ||
4933 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
4934 | return -EINVAL; |
4935 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
4936 | if (!data) | |
4937 | return -ENOMEM; | |
4938 | data->lsp = lsp; | |
5ae67c4f | 4939 | data->server = server; |
cf470c3e TM |
4940 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
4941 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
4942 | data->args.lock_owner.s_dev = server->s_dev; | |
4943 | msg.rpc_argp = &data->args; | |
4944 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
4945 | return 0; | |
d3c7b7cc TM |
4946 | } |
4947 | ||
aa1870af BF |
4948 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4949 | ||
64c2ce8b AK |
4950 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4951 | const void *buf, size_t buflen, | |
4952 | int flags, int type) | |
6b3b5496 | 4953 | { |
64c2ce8b AK |
4954 | if (strcmp(key, "") != 0) |
4955 | return -EINVAL; | |
4b580ee3 | 4956 | |
64c2ce8b | 4957 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4958 | } |
4959 | ||
64c2ce8b AK |
4960 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4961 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4962 | { |
64c2ce8b AK |
4963 | if (strcmp(key, "") != 0) |
4964 | return -EINVAL; | |
aa1870af | 4965 | |
64c2ce8b | 4966 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4967 | } |
4968 | ||
64c2ce8b AK |
4969 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4970 | size_t list_len, const char *name, | |
4971 | size_t name_len, int type) | |
6b3b5496 | 4972 | { |
64c2ce8b | 4973 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4974 | |
096455a2 BF |
4975 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4976 | return 0; | |
64c2ce8b AK |
4977 | |
4978 | if (list && len <= list_len) | |
4979 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4980 | return len; |
6b3b5496 BF |
4981 | } |
4982 | ||
533eb461 AA |
4983 | /* |
4984 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4985 | */ | |
69aaaae1 TM |
4986 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4987 | { | |
533eb461 AA |
4988 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4989 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4990 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 4991 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
4992 | return; |
4993 | ||
4994 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 4995 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
4996 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
4997 | fattr->nlink = 2; | |
4998 | } | |
4999 | ||
f05d147f BS |
5000 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5001 | const struct qstr *name, | |
5002 | struct nfs4_fs_locations *fs_locations, | |
5003 | struct page *page) | |
683b57b4 TM |
5004 | { |
5005 | struct nfs_server *server = NFS_SERVER(dir); | |
5006 | u32 bitmask[2] = { | |
361e624f | 5007 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5008 | }; |
5009 | struct nfs4_fs_locations_arg args = { | |
5010 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5011 | .name = name, |
683b57b4 TM |
5012 | .page = page, |
5013 | .bitmask = bitmask, | |
5014 | }; | |
22958463 BH |
5015 | struct nfs4_fs_locations_res res = { |
5016 | .fs_locations = fs_locations, | |
5017 | }; | |
683b57b4 TM |
5018 | struct rpc_message msg = { |
5019 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5020 | .rpc_argp = &args, | |
22958463 | 5021 | .rpc_resp = &res, |
683b57b4 TM |
5022 | }; |
5023 | int status; | |
5024 | ||
3110ff80 | 5025 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5026 | |
5027 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5028 | * is not supported */ | |
5029 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5030 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5031 | else | |
5032 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5033 | ||
c228fd3a | 5034 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5035 | fs_locations->server = server; |
830b8e33 | 5036 | fs_locations->nlocations = 0; |
f05d147f | 5037 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5038 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5039 | return status; |
5040 | } | |
5041 | ||
f05d147f BS |
5042 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5043 | const struct qstr *name, | |
5044 | struct nfs4_fs_locations *fs_locations, | |
5045 | struct page *page) | |
db0a9593 BS |
5046 | { |
5047 | struct nfs4_exception exception = { }; | |
5048 | int err; | |
5049 | do { | |
5050 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5051 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5052 | &exception); |
5053 | } while (exception.retry); | |
5054 | return err; | |
5055 | } | |
5056 | ||
5a5ea0d4 BS |
5057 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5058 | { | |
5059 | int status; | |
5060 | struct nfs4_secinfo_arg args = { | |
5061 | .dir_fh = NFS_FH(dir), | |
5062 | .name = name, | |
5063 | }; | |
5064 | struct nfs4_secinfo_res res = { | |
5065 | .flavors = flavors, | |
5066 | }; | |
5067 | struct rpc_message msg = { | |
5068 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5069 | .rpc_argp = &args, | |
5070 | .rpc_resp = &res, | |
5071 | }; | |
5072 | ||
5073 | dprintk("NFS call secinfo %s\n", name->name); | |
5074 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5075 | dprintk("NFS reply secinfo: %d\n", status); | |
5076 | return status; | |
5077 | } | |
5078 | ||
72de53ec BS |
5079 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5080 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5081 | { |
5082 | struct nfs4_exception exception = { }; | |
5083 | int err; | |
5084 | do { | |
5085 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5086 | _nfs4_proc_secinfo(dir, name, flavors), | |
5087 | &exception); | |
5088 | } while (exception.retry); | |
5089 | return err; | |
5090 | } | |
5091 | ||
557134a3 | 5092 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5093 | /* |
5094 | * Check the exchange flags returned by the server for invalid flags, having | |
5095 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5096 | * DS flags set. | |
5097 | */ | |
5098 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5099 | { | |
5100 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5101 | goto out_inval; | |
5102 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5103 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5104 | goto out_inval; | |
5105 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5106 | goto out_inval; | |
5107 | return NFS_OK; | |
5108 | out_inval: | |
5109 | return -NFS4ERR_INVAL; | |
5110 | } | |
5111 | ||
78fe0f41 | 5112 | static bool |
79d4e1f0 CL |
5113 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5114 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5115 | { |
5116 | if (a->server_scope_sz == b->server_scope_sz && | |
5117 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5118 | return true; | |
5119 | ||
5120 | return false; | |
5121 | } | |
5122 | ||
7c44f1ae WAA |
5123 | /* |
5124 | * nfs4_proc_bind_conn_to_session() | |
5125 | * | |
5126 | * The 4.1 client currently uses the same TCP connection for the | |
5127 | * fore and backchannel. | |
5128 | */ | |
2cf047c9 | 5129 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5130 | { |
5131 | int status; | |
5132 | struct nfs41_bind_conn_to_session_res res; | |
5133 | struct rpc_message msg = { | |
5134 | .rpc_proc = | |
5135 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5136 | .rpc_argp = clp, | |
5137 | .rpc_resp = &res, | |
2cf047c9 | 5138 | .rpc_cred = cred, |
7c44f1ae WAA |
5139 | }; |
5140 | ||
5141 | dprintk("--> %s\n", __func__); | |
5142 | BUG_ON(clp == NULL); | |
5143 | ||
5144 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5145 | if (unlikely(res.session == NULL)) { | |
5146 | status = -ENOMEM; | |
5147 | goto out; | |
5148 | } | |
5149 | ||
5150 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5151 | if (status == 0) { | |
5152 | if (memcmp(res.session->sess_id.data, | |
5153 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5154 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5155 | status = -EIO; | |
5156 | goto out_session; | |
5157 | } | |
5158 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5159 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5160 | __func__); | |
5161 | status = -EIO; | |
5162 | goto out_session; | |
5163 | } | |
5164 | if (res.use_conn_in_rdma_mode) { | |
5165 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5166 | __func__); | |
5167 | status = -EIO; | |
5168 | goto out_session; | |
5169 | } | |
5170 | } | |
5171 | out_session: | |
5172 | kfree(res.session); | |
5173 | out: | |
5174 | dprintk("<-- %s status= %d\n", __func__, status); | |
5175 | return status; | |
5176 | } | |
5177 | ||
99fe60d0 BH |
5178 | /* |
5179 | * nfs4_proc_exchange_id() | |
5180 | * | |
5181 | * Since the clientid has expired, all compounds using sessions | |
5182 | * associated with the stale clientid will be returning | |
5183 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5184 | * be in some phase of session reset. | |
5185 | */ | |
4d643d1d | 5186 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5187 | { |
5188 | nfs4_verifier verifier; | |
5189 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5190 | .verifier = &verifier, |
99fe60d0 | 5191 | .client = clp, |
357f54d6 | 5192 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5193 | }; |
5194 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5195 | 0 |
99fe60d0 BH |
5196 | }; |
5197 | int status; | |
5198 | struct rpc_message msg = { | |
5199 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5200 | .rpc_argp = &args, | |
5201 | .rpc_resp = &res, | |
5202 | .rpc_cred = cred, | |
5203 | }; | |
99fe60d0 BH |
5204 | |
5205 | dprintk("--> %s\n", __func__); | |
5206 | BUG_ON(clp == NULL); | |
a7b72103 | 5207 | |
f092075d | 5208 | nfs4_init_boot_verifier(clp, &verifier); |
99fe60d0 | 5209 | |
c7a360b0 | 5210 | args.id_len = scnprintf(args.id, sizeof(args.id), |
3617e503 | 5211 | "%s/%s/%u", |
c7a360b0 | 5212 | clp->cl_ipaddr, |
3617e503 | 5213 | clp->cl_rpcclient->cl_nodename, |
c7a360b0 | 5214 | clp->cl_rpcclient->cl_auth->au_flavor); |
99fe60d0 | 5215 | |
acdeb69d | 5216 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5217 | GFP_NOFS); |
acdeb69d | 5218 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5219 | status = -ENOMEM; |
5220 | goto out; | |
5221 | } | |
78fe0f41 | 5222 | |
79d4e1f0 | 5223 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5224 | GFP_NOFS); |
177313f1 | 5225 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5226 | status = -ENOMEM; |
acdeb69d | 5227 | goto out_server_owner; |
abe9a6d5 | 5228 | } |
78fe0f41 | 5229 | |
bbafffd2 | 5230 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5231 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5232 | status = -ENOMEM; |
5233 | goto out_server_scope; | |
5234 | } | |
5235 | ||
1bd714f2 | 5236 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5237 | if (status == 0) |
32b01310 | 5238 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5239 | |
acdeb69d | 5240 | if (status == 0) { |
32b01310 TM |
5241 | clp->cl_clientid = res.clientid; |
5242 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5243 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5244 | clp->cl_seqid = res.seqid; | |
5245 | ||
acdeb69d CL |
5246 | kfree(clp->cl_serverowner); |
5247 | clp->cl_serverowner = res.server_owner; | |
5248 | res.server_owner = NULL; | |
78fe0f41 | 5249 | |
7d2ed9ac | 5250 | /* use the most recent implementation id */ |
59155546 CL |
5251 | kfree(clp->cl_implid); |
5252 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5253 | |
177313f1 | 5254 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5255 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5256 | res.server_scope)) { |
5257 | dprintk("%s: server_scope mismatch detected\n", | |
5258 | __func__); | |
5259 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5260 | kfree(clp->cl_serverscope); |
5261 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5262 | } |
5263 | ||
177313f1 | 5264 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5265 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5266 | goto out; |
5267 | } | |
32b01310 TM |
5268 | } else |
5269 | kfree(res.impl_id); | |
7d2ed9ac | 5270 | |
acdeb69d CL |
5271 | out_server_owner: |
5272 | kfree(res.server_owner); | |
7d2ed9ac | 5273 | out_server_scope: |
abe9a6d5 WAA |
5274 | kfree(res.server_scope); |
5275 | out: | |
177313f1 | 5276 | if (clp->cl_implid != NULL) |
7d2ed9ac WAA |
5277 | dprintk("%s: Server Implementation ID: " |
5278 | "domain: %s, name: %s, date: %llu,%u\n", | |
59155546 CL |
5279 | __func__, clp->cl_implid->domain, clp->cl_implid->name, |
5280 | clp->cl_implid->date.seconds, | |
5281 | clp->cl_implid->date.nseconds); | |
99fe60d0 BH |
5282 | dprintk("<-- %s status= %d\n", __func__, status); |
5283 | return status; | |
5284 | } | |
5285 | ||
66245539 TM |
5286 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5287 | struct rpc_cred *cred) | |
5288 | { | |
5289 | struct rpc_message msg = { | |
5290 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5291 | .rpc_argp = clp, | |
5292 | .rpc_cred = cred, | |
5293 | }; | |
5294 | int status; | |
5295 | ||
5296 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5297 | if (status) | |
02c67525 | 5298 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5299 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5300 | return status; | |
5301 | } | |
5302 | ||
5303 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5304 | struct rpc_cred *cred) | |
5305 | { | |
5306 | unsigned int loop; | |
5307 | int ret; | |
5308 | ||
5309 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5310 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5311 | switch (ret) { | |
5312 | case -NFS4ERR_DELAY: | |
5313 | case -NFS4ERR_CLIENTID_BUSY: | |
5314 | ssleep(1); | |
5315 | break; | |
5316 | default: | |
5317 | return ret; | |
5318 | } | |
5319 | } | |
5320 | return 0; | |
5321 | } | |
5322 | ||
5323 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5324 | { | |
5325 | struct rpc_cred *cred; | |
5326 | int ret = 0; | |
5327 | ||
5328 | if (clp->cl_mvops->minor_version < 1) | |
5329 | goto out; | |
5330 | if (clp->cl_exchange_flags == 0) | |
5331 | goto out; | |
5332 | cred = nfs4_get_exchange_id_cred(clp); | |
5333 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5334 | if (cred) | |
5335 | put_rpccred(cred); | |
5336 | switch (ret) { | |
5337 | case 0: | |
5338 | case -NFS4ERR_STALE_CLIENTID: | |
5339 | clp->cl_exchange_flags = 0; | |
5340 | } | |
5341 | out: | |
5342 | return ret; | |
5343 | } | |
5344 | ||
2050f0cc AA |
5345 | struct nfs4_get_lease_time_data { |
5346 | struct nfs4_get_lease_time_args *args; | |
5347 | struct nfs4_get_lease_time_res *res; | |
5348 | struct nfs_client *clp; | |
5349 | }; | |
5350 | ||
5351 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5352 | void *calldata) | |
5353 | { | |
5354 | int ret; | |
5355 | struct nfs4_get_lease_time_data *data = | |
5356 | (struct nfs4_get_lease_time_data *)calldata; | |
5357 | ||
5358 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5359 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5360 | /* just setup sequence, do not trigger session recovery |
5361 | since we're invoked within one */ | |
5362 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5363 | &data->args->la_seq_args, |
9d12b216 | 5364 | &data->res->lr_seq_res, task); |
2050f0cc AA |
5365 | |
5366 | BUG_ON(ret == -EAGAIN); | |
5367 | rpc_call_start(task); | |
5368 | dprintk("<-- %s\n", __func__); | |
5369 | } | |
5370 | ||
5371 | /* | |
5372 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5373 | * from sequence operation or clientid errors. | |
5374 | */ | |
5375 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5376 | { | |
5377 | struct nfs4_get_lease_time_data *data = | |
5378 | (struct nfs4_get_lease_time_data *)calldata; | |
5379 | ||
5380 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5381 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5382 | return; | |
2050f0cc AA |
5383 | switch (task->tk_status) { |
5384 | case -NFS4ERR_DELAY: | |
5385 | case -NFS4ERR_GRACE: | |
5386 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5387 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5388 | task->tk_status = 0; | |
a8a4ae3a AA |
5389 | /* fall through */ |
5390 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5391 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5392 | return; |
5393 | } | |
2050f0cc AA |
5394 | dprintk("<-- %s\n", __func__); |
5395 | } | |
5396 | ||
17280175 | 5397 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5398 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5399 | .rpc_call_done = nfs4_get_lease_time_done, | |
5400 | }; | |
5401 | ||
5402 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5403 | { | |
5404 | struct rpc_task *task; | |
5405 | struct nfs4_get_lease_time_args args; | |
5406 | struct nfs4_get_lease_time_res res = { | |
5407 | .lr_fsinfo = fsinfo, | |
5408 | }; | |
5409 | struct nfs4_get_lease_time_data data = { | |
5410 | .args = &args, | |
5411 | .res = &res, | |
5412 | .clp = clp, | |
5413 | }; | |
5414 | struct rpc_message msg = { | |
5415 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5416 | .rpc_argp = &args, | |
5417 | .rpc_resp = &res, | |
5418 | }; | |
5419 | struct rpc_task_setup task_setup = { | |
5420 | .rpc_client = clp->cl_rpcclient, | |
5421 | .rpc_message = &msg, | |
5422 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5423 | .callback_data = &data, |
5424 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5425 | }; |
5426 | int status; | |
5427 | ||
9d12b216 | 5428 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5429 | dprintk("--> %s\n", __func__); |
5430 | task = rpc_run_task(&task_setup); | |
5431 | ||
5432 | if (IS_ERR(task)) | |
5433 | status = PTR_ERR(task); | |
5434 | else { | |
5435 | status = task->tk_status; | |
5436 | rpc_put_task(task); | |
5437 | } | |
5438 | dprintk("<-- %s return %d\n", __func__, status); | |
5439 | ||
5440 | return status; | |
5441 | } | |
5442 | ||
f86f36a6 TM |
5443 | static struct nfs4_slot *nfs4_alloc_slots(u32 max_slots, gfp_t gfp_flags) |
5444 | { | |
5445 | return kcalloc(max_slots, sizeof(struct nfs4_slot), gfp_flags); | |
5446 | } | |
5447 | ||
5448 | static void nfs4_add_and_init_slots(struct nfs4_slot_table *tbl, | |
5449 | struct nfs4_slot *new, | |
5450 | u32 max_slots, | |
5451 | u32 ivalue) | |
5452 | { | |
5453 | struct nfs4_slot *old = NULL; | |
5454 | u32 i; | |
5455 | ||
5456 | spin_lock(&tbl->slot_tbl_lock); | |
5457 | if (new) { | |
5458 | old = tbl->slots; | |
5459 | tbl->slots = new; | |
5460 | tbl->max_slots = max_slots; | |
5461 | } | |
5462 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5463 | for (i = 0; i < tbl->max_slots; i++) | |
5464 | tbl->slots[i].seq_nr = ivalue; | |
5465 | spin_unlock(&tbl->slot_tbl_lock); | |
5466 | kfree(old); | |
5467 | } | |
5468 | ||
b73dafa7 | 5469 | /* |
f86f36a6 | 5470 | * (re)Initialise a slot table |
b73dafa7 | 5471 | */ |
f86f36a6 TM |
5472 | static int nfs4_realloc_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5473 | u32 ivalue) | |
ac72b7b3 | 5474 | { |
104aeba4 | 5475 | struct nfs4_slot *new = NULL; |
f86f36a6 | 5476 | int ret = -ENOMEM; |
ac72b7b3 | 5477 | |
104aeba4 AA |
5478 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5479 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5480 | |
104aeba4 AA |
5481 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5482 | if (max_reqs != tbl->max_slots) { | |
f86f36a6 | 5483 | new = nfs4_alloc_slots(max_reqs, GFP_NOFS); |
104aeba4 AA |
5484 | if (!new) |
5485 | goto out; | |
104aeba4 | 5486 | } |
f86f36a6 TM |
5487 | ret = 0; |
5488 | ||
5489 | nfs4_add_and_init_slots(tbl, new, max_reqs, ivalue); | |
ac72b7b3 AA |
5490 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, |
5491 | tbl, tbl->slots, tbl->max_slots); | |
5492 | out: | |
5493 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5494 | return ret; | |
5495 | } | |
5496 | ||
f8625a6a RL |
5497 | /* Destroy the slot table */ |
5498 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5499 | { | |
5500 | if (session->fc_slot_table.slots != NULL) { | |
5501 | kfree(session->fc_slot_table.slots); | |
5502 | session->fc_slot_table.slots = NULL; | |
5503 | } | |
5504 | if (session->bc_slot_table.slots != NULL) { | |
5505 | kfree(session->bc_slot_table.slots); | |
5506 | session->bc_slot_table.slots = NULL; | |
5507 | } | |
5508 | return; | |
5509 | } | |
5510 | ||
050047ce | 5511 | /* |
aacd5537 | 5512 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5513 | */ |
aacd5537 | 5514 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5515 | { |
f26468fb | 5516 | struct nfs4_slot_table *tbl; |
aacd5537 | 5517 | int status; |
050047ce | 5518 | |
aacd5537 AA |
5519 | dprintk("--> %s\n", __func__); |
5520 | /* Fore channel */ | |
5521 | tbl = &ses->fc_slot_table; | |
f86f36a6 TM |
5522 | status = nfs4_realloc_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5523 | if (status) /* -ENOMEM */ | |
5524 | return status; | |
aacd5537 AA |
5525 | /* Back channel */ |
5526 | tbl = &ses->bc_slot_table; | |
f86f36a6 TM |
5527 | status = nfs4_realloc_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
5528 | if (status && tbl->slots == NULL) | |
5529 | /* Fore and back channel share a connection so get | |
5530 | * both slot tables or neither */ | |
5531 | nfs4_destroy_slot_tables(ses); | |
f8625a6a | 5532 | return status; |
557134a3 AA |
5533 | } |
5534 | ||
5535 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5536 | { | |
5537 | struct nfs4_session *session; | |
5538 | struct nfs4_slot_table *tbl; | |
5539 | ||
8535b2be | 5540 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5541 | if (!session) |
5542 | return NULL; | |
76db6d95 | 5543 | |
557134a3 | 5544 | tbl = &session->fc_slot_table; |
45d43c29 | 5545 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5546 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5547 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5548 | init_completion(&tbl->complete); |
f8625a6a RL |
5549 | |
5550 | tbl = &session->bc_slot_table; | |
45d43c29 | 5551 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5552 | spin_lock_init(&tbl->slot_tbl_lock); |
5553 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5554 | init_completion(&tbl->complete); |
f8625a6a | 5555 | |
1055d76d TM |
5556 | session->session_state = 1<<NFS4_SESSION_INITING; |
5557 | ||
557134a3 AA |
5558 | session->clp = clp; |
5559 | return session; | |
5560 | } | |
5561 | ||
5562 | void nfs4_destroy_session(struct nfs4_session *session) | |
5563 | { | |
2446ab60 | 5564 | struct rpc_xprt *xprt; |
848f5bda | 5565 | struct rpc_cred *cred; |
2446ab60 | 5566 | |
848f5bda TM |
5567 | cred = nfs4_get_exchange_id_cred(session->clp); |
5568 | nfs4_proc_destroy_session(session, cred); | |
5569 | if (cred) | |
5570 | put_rpccred(cred); | |
2446ab60 TM |
5571 | |
5572 | rcu_read_lock(); | |
5573 | xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); | |
5574 | rcu_read_unlock(); | |
5a0ffe54 | 5575 | dprintk("%s Destroy backchannel for xprt %p\n", |
2446ab60 TM |
5576 | __func__, xprt); |
5577 | xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5578 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5579 | kfree(session); |
5580 | } | |
5581 | ||
fc931582 AA |
5582 | /* |
5583 | * Initialize the values to be used by the client in CREATE_SESSION | |
5584 | * If nfs4_init_session set the fore channel request and response sizes, | |
5585 | * use them. | |
5586 | * | |
5587 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5588 | * always set csa_cachethis to FALSE because the current implementation | |
5589 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5590 | */ | |
5591 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5592 | { | |
5593 | struct nfs4_session *session = args->client->cl_session; | |
5594 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5595 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5596 | ||
5597 | if (mxrqst_sz == 0) | |
5598 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5599 | if (mxresp_sz == 0) | |
5600 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5601 | /* Fore channel attributes */ | |
fc931582 AA |
5602 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5603 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5604 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5605 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5606 | |
5607 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5608 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5609 | __func__, |
5610 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5611 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5612 | |
5613 | /* Back channel attributes */ | |
fc931582 AA |
5614 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5615 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5616 | args->bc_attrs.max_resp_sz_cached = 0; | |
5617 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5618 | args->bc_attrs.max_reqs = 1; | |
5619 | ||
5620 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5621 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5622 | __func__, | |
5623 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5624 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5625 | args->bc_attrs.max_reqs); | |
5626 | } | |
5627 | ||
43c2e885 | 5628 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5629 | { |
43c2e885 BF |
5630 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5631 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5632 | ||
43c2e885 BF |
5633 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5634 | return -EINVAL; | |
5635 | /* | |
5636 | * Our requested max_ops is the minimum we need; we're not | |
5637 | * prepared to break up compounds into smaller pieces than that. | |
5638 | * So, no point even trying to continue if the server won't | |
5639 | * cooperate: | |
5640 | */ | |
5641 | if (rcvd->max_ops < sent->max_ops) | |
5642 | return -EINVAL; | |
5643 | if (rcvd->max_reqs == 0) | |
5644 | return -EINVAL; | |
b4b9a0c1 VG |
5645 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5646 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5647 | return 0; |
8d35301d AA |
5648 | } |
5649 | ||
43c2e885 BF |
5650 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5651 | { | |
5652 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5653 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5654 | |
43c2e885 BF |
5655 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5656 | return -EINVAL; | |
5657 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5658 | return -EINVAL; | |
5659 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5660 | return -EINVAL; | |
5661 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5662 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5663 | return -EINVAL; |
b4b9a0c1 | 5664 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5665 | return -EINVAL; |
5666 | return 0; | |
5667 | } | |
8d35301d | 5668 | |
8d35301d AA |
5669 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5670 | struct nfs4_session *session) | |
5671 | { | |
43c2e885 | 5672 | int ret; |
8d35301d | 5673 | |
43c2e885 BF |
5674 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5675 | if (ret) | |
5676 | return ret; | |
5677 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5678 | } |
5679 | ||
848f5bda TM |
5680 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5681 | struct rpc_cred *cred) | |
fc931582 AA |
5682 | { |
5683 | struct nfs4_session *session = clp->cl_session; | |
5684 | struct nfs41_create_session_args args = { | |
5685 | .client = clp, | |
5686 | .cb_program = NFS4_CALLBACK, | |
5687 | }; | |
5688 | struct nfs41_create_session_res res = { | |
5689 | .client = clp, | |
5690 | }; | |
5691 | struct rpc_message msg = { | |
5692 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5693 | .rpc_argp = &args, | |
5694 | .rpc_resp = &res, | |
848f5bda | 5695 | .rpc_cred = cred, |
fc931582 AA |
5696 | }; |
5697 | int status; | |
5698 | ||
5699 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5700 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5701 | |
1bd714f2 | 5702 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5703 | |
8d35301d AA |
5704 | if (!status) |
5705 | /* Verify the session's negotiated channel_attrs values */ | |
5706 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5707 | if (!status) { |
5708 | /* Increment the clientid slot sequence id */ | |
5709 | clp->cl_seqid++; | |
5710 | } | |
5711 | ||
5712 | return status; | |
5713 | } | |
5714 | ||
5715 | /* | |
5716 | * Issues a CREATE_SESSION operation to the server. | |
5717 | * It is the responsibility of the caller to verify the session is | |
5718 | * expired before calling this routine. | |
5719 | */ | |
848f5bda | 5720 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5721 | { |
5722 | int status; | |
5723 | unsigned *ptr; | |
fc931582 AA |
5724 | struct nfs4_session *session = clp->cl_session; |
5725 | ||
5726 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5727 | ||
848f5bda | 5728 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5729 | if (status) |
5730 | goto out; | |
5731 | ||
aacd5537 AA |
5732 | /* Init or reset the session slot tables */ |
5733 | status = nfs4_setup_session_slot_tables(session); | |
5734 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5735 | if (status) |
5736 | goto out; | |
5737 | ||
5738 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5739 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5740 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5741 | out: |
5742 | dprintk("<-- %s\n", __func__); | |
5743 | return status; | |
5744 | } | |
5745 | ||
0f3e66c6 AA |
5746 | /* |
5747 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5748 | * The caller must serialize access to this routine. | |
5749 | */ | |
848f5bda TM |
5750 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5751 | struct rpc_cred *cred) | |
0f3e66c6 | 5752 | { |
848f5bda TM |
5753 | struct rpc_message msg = { |
5754 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5755 | .rpc_argp = session, | |
5756 | .rpc_cred = cred, | |
5757 | }; | |
0f3e66c6 | 5758 | int status = 0; |
0f3e66c6 AA |
5759 | |
5760 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5761 | ||
5762 | /* session is still being setup */ | |
5763 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5764 | return status; | |
5765 | ||
1bd714f2 | 5766 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5767 | |
5768 | if (status) | |
08106ac7 | 5769 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5770 | "Session has been destroyed regardless...\n", status); |
5771 | ||
5772 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5773 | return status; | |
5774 | } | |
5775 | ||
7b38c368 TM |
5776 | /* |
5777 | * With sessions, the client is not marked ready until after a | |
5778 | * successful EXCHANGE_ID and CREATE_SESSION. | |
5779 | * | |
5780 | * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate | |
5781 | * other versions of NFS can be tried. | |
5782 | */ | |
5783 | static int nfs41_check_session_ready(struct nfs_client *clp) | |
5784 | { | |
5785 | int ret; | |
5786 | ||
5787 | if (clp->cl_cons_state == NFS_CS_SESSION_INITING) { | |
5788 | ret = nfs4_client_recover_expired_lease(clp); | |
5789 | if (ret) | |
5790 | return ret; | |
5791 | } | |
5792 | if (clp->cl_cons_state < NFS_CS_READY) | |
5793 | return -EPROTONOSUPPORT; | |
54ac471c | 5794 | smp_rmb(); |
7b38c368 TM |
5795 | return 0; |
5796 | } | |
5797 | ||
fccba804 TM |
5798 | int nfs4_init_session(struct nfs_server *server) |
5799 | { | |
5800 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5801 | struct nfs4_session *session; |
68bf05ef | 5802 | unsigned int rsize, wsize; |
fccba804 TM |
5803 | |
5804 | if (!nfs4_has_session(clp)) | |
5805 | return 0; | |
5806 | ||
1055d76d | 5807 | session = clp->cl_session; |
7b38c368 TM |
5808 | spin_lock(&clp->cl_lock); |
5809 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
1055d76d | 5810 | |
7b38c368 TM |
5811 | rsize = server->rsize; |
5812 | if (rsize == 0) | |
5813 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5814 | wsize = server->wsize; | |
5815 | if (wsize == 0) | |
5816 | wsize = NFS_MAX_FILE_IO_SIZE; | |
68bf05ef | 5817 | |
7b38c368 TM |
5818 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5819 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
5820 | } | |
5821 | spin_unlock(&clp->cl_lock); | |
2449ea2e | 5822 | |
7b38c368 | 5823 | return nfs41_check_session_ready(clp); |
fccba804 TM |
5824 | } |
5825 | ||
7b38c368 | 5826 | int nfs4_init_ds_session(struct nfs_client *clp, unsigned long lease_time) |
d83217c1 AA |
5827 | { |
5828 | struct nfs4_session *session = clp->cl_session; | |
5829 | int ret; | |
5830 | ||
7b38c368 TM |
5831 | spin_lock(&clp->cl_lock); |
5832 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
5833 | /* | |
5834 | * Do not set NFS_CS_CHECK_LEASE_TIME instead set the | |
5835 | * DS lease to be equal to the MDS lease. | |
5836 | */ | |
5837 | clp->cl_lease_time = lease_time; | |
5838 | clp->cl_last_renewal = jiffies; | |
5839 | } | |
5840 | spin_unlock(&clp->cl_lock); | |
d83217c1 | 5841 | |
7b38c368 TM |
5842 | ret = nfs41_check_session_ready(clp); |
5843 | if (ret) | |
5844 | return ret; | |
5845 | /* Test for the DS role */ | |
5846 | if (!is_ds_client(clp)) | |
5847 | return -ENODEV; | |
5848 | return 0; | |
d83217c1 AA |
5849 | } |
5850 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5851 | ||
5852 | ||
fc01cea9 AA |
5853 | /* |
5854 | * Renew the cl_session lease. | |
5855 | */ | |
d5f8d3fe TM |
5856 | struct nfs4_sequence_data { |
5857 | struct nfs_client *clp; | |
5858 | struct nfs4_sequence_args args; | |
5859 | struct nfs4_sequence_res res; | |
5860 | }; | |
5861 | ||
dc96aef9 AB |
5862 | static void nfs41_sequence_release(void *data) |
5863 | { | |
d5f8d3fe TM |
5864 | struct nfs4_sequence_data *calldata = data; |
5865 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5866 | |
7135840f AB |
5867 | if (atomic_read(&clp->cl_count) > 1) |
5868 | nfs4_schedule_state_renewal(clp); | |
5869 | nfs_put_client(clp); | |
d5f8d3fe | 5870 | kfree(calldata); |
dc96aef9 AB |
5871 | } |
5872 | ||
aa5190d0 TM |
5873 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5874 | { | |
5875 | switch(task->tk_status) { | |
5876 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5877 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5878 | return -EAGAIN; | |
5879 | default: | |
0400a6b0 | 5880 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5881 | } |
5882 | return 0; | |
5883 | } | |
5884 | ||
dc96aef9 | 5885 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5886 | { |
d5f8d3fe TM |
5887 | struct nfs4_sequence_data *calldata = data; |
5888 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5889 | |
14516c3a TM |
5890 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5891 | return; | |
fc01cea9 AA |
5892 | |
5893 | if (task->tk_status < 0) { | |
5894 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5895 | if (atomic_read(&clp->cl_count) == 1) |
5896 | goto out; | |
fc01cea9 | 5897 | |
aa5190d0 TM |
5898 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5899 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5900 | return; |
5901 | } | |
5902 | } | |
fc01cea9 | 5903 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5904 | out: |
fc01cea9 AA |
5905 | dprintk("<-- %s\n", __func__); |
5906 | } | |
5907 | ||
5908 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5909 | { | |
d5f8d3fe TM |
5910 | struct nfs4_sequence_data *calldata = data; |
5911 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5912 | struct nfs4_sequence_args *args; |
5913 | struct nfs4_sequence_res *res; | |
5914 | ||
fc01cea9 AA |
5915 | args = task->tk_msg.rpc_argp; |
5916 | res = task->tk_msg.rpc_resp; | |
5917 | ||
9d12b216 | 5918 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
5919 | return; |
5920 | rpc_call_start(task); | |
5921 | } | |
5922 | ||
5923 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5924 | .rpc_call_done = nfs41_sequence_call_done, | |
5925 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5926 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5927 | }; |
5928 | ||
71ac6da9 | 5929 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5930 | { |
d5f8d3fe | 5931 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5932 | struct rpc_message msg = { |
5933 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5934 | .rpc_cred = cred, | |
5935 | }; | |
71ac6da9 TM |
5936 | struct rpc_task_setup task_setup_data = { |
5937 | .rpc_client = clp->cl_rpcclient, | |
5938 | .rpc_message = &msg, | |
5939 | .callback_ops = &nfs41_sequence_ops, | |
5940 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5941 | }; | |
fc01cea9 | 5942 | |
7135840f | 5943 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5944 | return ERR_PTR(-EIO); |
dfb4f309 | 5945 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5946 | if (calldata == NULL) { |
7135840f | 5947 | nfs_put_client(clp); |
71ac6da9 | 5948 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5949 | } |
9d12b216 | 5950 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
5951 | msg.rpc_argp = &calldata->args; |
5952 | msg.rpc_resp = &calldata->res; | |
5953 | calldata->clp = clp; | |
71ac6da9 | 5954 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5955 | |
71ac6da9 TM |
5956 | return rpc_run_task(&task_setup_data); |
5957 | } | |
5958 | ||
2f60ea6b | 5959 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
5960 | { |
5961 | struct rpc_task *task; | |
5962 | int ret = 0; | |
5963 | ||
2f60ea6b TM |
5964 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
5965 | return 0; | |
71ac6da9 TM |
5966 | task = _nfs41_proc_sequence(clp, cred); |
5967 | if (IS_ERR(task)) | |
5968 | ret = PTR_ERR(task); | |
5969 | else | |
bf294b41 | 5970 | rpc_put_task_async(task); |
71ac6da9 TM |
5971 | dprintk("<-- %s status=%d\n", __func__, ret); |
5972 | return ret; | |
5973 | } | |
5974 | ||
5975 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5976 | { | |
5977 | struct rpc_task *task; | |
5978 | int ret; | |
5979 | ||
5980 | task = _nfs41_proc_sequence(clp, cred); | |
5981 | if (IS_ERR(task)) { | |
5982 | ret = PTR_ERR(task); | |
5983 | goto out; | |
5984 | } | |
5985 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5986 | if (!ret) { |
5987 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5988 | ||
5989 | if (task->tk_status == 0) | |
5990 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5991 | ret = task->tk_status; |
b4410c2f | 5992 | } |
71ac6da9 TM |
5993 | rpc_put_task(task); |
5994 | out: | |
5995 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5996 | return ret; | |
fc01cea9 AA |
5997 | } |
5998 | ||
fce5c838 RL |
5999 | struct nfs4_reclaim_complete_data { |
6000 | struct nfs_client *clp; | |
6001 | struct nfs41_reclaim_complete_args arg; | |
6002 | struct nfs41_reclaim_complete_res res; | |
6003 | }; | |
6004 | ||
6005 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6006 | { | |
6007 | struct nfs4_reclaim_complete_data *calldata = data; | |
6008 | ||
b257957e | 6009 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
6010 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
6011 | &calldata->arg.seq_args, | |
9d12b216 | 6012 | &calldata->res.seq_res, task)) |
fce5c838 RL |
6013 | return; |
6014 | ||
6015 | rpc_call_start(task); | |
6016 | } | |
6017 | ||
aa5190d0 TM |
6018 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6019 | { | |
6020 | switch(task->tk_status) { | |
6021 | case 0: | |
6022 | case -NFS4ERR_COMPLETE_ALREADY: | |
6023 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6024 | break; | |
6025 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6026 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6027 | /* fall through */ |
6028 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6029 | return -EAGAIN; |
6030 | default: | |
0400a6b0 | 6031 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6032 | } |
6033 | return 0; | |
6034 | } | |
6035 | ||
fce5c838 RL |
6036 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6037 | { | |
6038 | struct nfs4_reclaim_complete_data *calldata = data; | |
6039 | struct nfs_client *clp = calldata->clp; | |
6040 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6041 | ||
6042 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6043 | if (!nfs41_sequence_done(task, res)) |
6044 | return; | |
fce5c838 | 6045 | |
aa5190d0 TM |
6046 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6047 | rpc_restart_call_prepare(task); | |
6048 | return; | |
6049 | } | |
fce5c838 RL |
6050 | dprintk("<-- %s\n", __func__); |
6051 | } | |
6052 | ||
6053 | static void nfs4_free_reclaim_complete_data(void *data) | |
6054 | { | |
6055 | struct nfs4_reclaim_complete_data *calldata = data; | |
6056 | ||
6057 | kfree(calldata); | |
6058 | } | |
6059 | ||
6060 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6061 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6062 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6063 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6064 | }; | |
6065 | ||
6066 | /* | |
6067 | * Issue a global reclaim complete. | |
6068 | */ | |
6069 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
6070 | { | |
6071 | struct nfs4_reclaim_complete_data *calldata; | |
6072 | struct rpc_task *task; | |
6073 | struct rpc_message msg = { | |
6074 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
6075 | }; | |
6076 | struct rpc_task_setup task_setup_data = { | |
6077 | .rpc_client = clp->cl_rpcclient, | |
6078 | .rpc_message = &msg, | |
6079 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6080 | .flags = RPC_TASK_ASYNC, | |
6081 | }; | |
6082 | int status = -ENOMEM; | |
6083 | ||
6084 | dprintk("--> %s\n", __func__); | |
8535b2be | 6085 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6086 | if (calldata == NULL) |
6087 | goto out; | |
6088 | calldata->clp = clp; | |
6089 | calldata->arg.one_fs = 0; | |
fce5c838 | 6090 | |
9d12b216 | 6091 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
6092 | msg.rpc_argp = &calldata->arg; |
6093 | msg.rpc_resp = &calldata->res; | |
6094 | task_setup_data.callback_data = calldata; | |
6095 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6096 | if (IS_ERR(task)) { |
fce5c838 | 6097 | status = PTR_ERR(task); |
acf82b85 DC |
6098 | goto out; |
6099 | } | |
c34c32ea AA |
6100 | status = nfs4_wait_for_completion_rpc_task(task); |
6101 | if (status == 0) | |
6102 | status = task->tk_status; | |
fce5c838 | 6103 | rpc_put_task(task); |
acf82b85 | 6104 | return 0; |
fce5c838 RL |
6105 | out: |
6106 | dprintk("<-- %s status=%d\n", __func__, status); | |
6107 | return status; | |
6108 | } | |
b1f69b75 AA |
6109 | |
6110 | static void | |
6111 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6112 | { | |
6113 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6114 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
6115 | |
6116 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6117 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6118 | * right now covering the LAYOUTGET we are about to send. | |
6119 | * However, that is not so catastrophic, and there seems | |
6120 | * to be no way to prevent it completely. | |
6121 | */ | |
b1f69b75 | 6122 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 6123 | &lgp->res.seq_res, task)) |
b1f69b75 | 6124 | return; |
cf7d63f1 FI |
6125 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6126 | NFS_I(lgp->args.inode)->layout, | |
6127 | lgp->args.ctx->state)) { | |
6128 | rpc_exit(task, NFS4_OK); | |
6129 | return; | |
6130 | } | |
b1f69b75 AA |
6131 | rpc_call_start(task); |
6132 | } | |
6133 | ||
6134 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6135 | { | |
6136 | struct nfs4_layoutget *lgp = calldata; | |
6137 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
6138 | ||
6139 | dprintk("--> %s\n", __func__); | |
6140 | ||
6141 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
6142 | return; | |
6143 | ||
6144 | switch (task->tk_status) { | |
6145 | case 0: | |
6146 | break; | |
6147 | case -NFS4ERR_LAYOUTTRYLATER: | |
6148 | case -NFS4ERR_RECALLCONFLICT: | |
6149 | task->tk_status = -NFS4ERR_DELAY; | |
6150 | /* Fall through */ | |
6151 | default: | |
6152 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6153 | rpc_restart_call_prepare(task); | |
6154 | return; | |
6155 | } | |
6156 | } | |
b1f69b75 AA |
6157 | dprintk("<-- %s\n", __func__); |
6158 | } | |
6159 | ||
6160 | static void nfs4_layoutget_release(void *calldata) | |
6161 | { | |
6162 | struct nfs4_layoutget *lgp = calldata; | |
6163 | ||
6164 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
6165 | put_nfs_open_context(lgp->args.ctx); |
6166 | kfree(calldata); | |
6167 | dprintk("<-- %s\n", __func__); | |
6168 | } | |
6169 | ||
6170 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6171 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6172 | .rpc_call_done = nfs4_layoutget_done, | |
6173 | .rpc_release = nfs4_layoutget_release, | |
6174 | }; | |
6175 | ||
6176 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
6177 | { | |
6178 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
6179 | struct rpc_task *task; | |
6180 | struct rpc_message msg = { | |
6181 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6182 | .rpc_argp = &lgp->args, | |
6183 | .rpc_resp = &lgp->res, | |
6184 | }; | |
6185 | struct rpc_task_setup task_setup_data = { | |
6186 | .rpc_client = server->client, | |
6187 | .rpc_message = &msg, | |
6188 | .callback_ops = &nfs4_layoutget_call_ops, | |
6189 | .callback_data = lgp, | |
6190 | .flags = RPC_TASK_ASYNC, | |
6191 | }; | |
6192 | int status = 0; | |
6193 | ||
6194 | dprintk("--> %s\n", __func__); | |
6195 | ||
35124a09 | 6196 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6197 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6198 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
6199 | task = rpc_run_task(&task_setup_data); |
6200 | if (IS_ERR(task)) | |
6201 | return PTR_ERR(task); | |
6202 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
6203 | if (status == 0) |
6204 | status = task->tk_status; | |
6205 | if (status == 0) | |
6206 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
6207 | rpc_put_task(task); |
6208 | dprintk("<-- %s status=%d\n", __func__, status); | |
6209 | return status; | |
6210 | } | |
6211 | ||
cbe82603 BH |
6212 | static void |
6213 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6214 | { | |
6215 | struct nfs4_layoutreturn *lrp = calldata; | |
6216 | ||
6217 | dprintk("--> %s\n", __func__); | |
6218 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 6219 | &lrp->res.seq_res, task)) |
cbe82603 BH |
6220 | return; |
6221 | rpc_call_start(task); | |
6222 | } | |
6223 | ||
6224 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6225 | { | |
6226 | struct nfs4_layoutreturn *lrp = calldata; | |
6227 | struct nfs_server *server; | |
a56aaa02 | 6228 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6229 | |
6230 | dprintk("--> %s\n", __func__); | |
6231 | ||
6232 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
6233 | return; | |
6234 | ||
6235 | server = NFS_SERVER(lrp->args.inode); | |
6236 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6237 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6238 | return; |
6239 | } | |
a2e1d4f2 | 6240 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 6241 | if (task->tk_status == 0) { |
cbe82603 | 6242 | if (lrp->res.lrs_present) { |
cbe82603 | 6243 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
6244 | } else |
6245 | BUG_ON(!list_empty(&lo->plh_segs)); | |
6246 | } | |
a2e1d4f2 FI |
6247 | lo->plh_block_lgets--; |
6248 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
6249 | dprintk("<-- %s\n", __func__); |
6250 | } | |
6251 | ||
6252 | static void nfs4_layoutreturn_release(void *calldata) | |
6253 | { | |
6254 | struct nfs4_layoutreturn *lrp = calldata; | |
6255 | ||
6256 | dprintk("--> %s\n", __func__); | |
a56aaa02 | 6257 | put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6258 | kfree(calldata); |
6259 | dprintk("<-- %s\n", __func__); | |
6260 | } | |
6261 | ||
6262 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6263 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6264 | .rpc_call_done = nfs4_layoutreturn_done, | |
6265 | .rpc_release = nfs4_layoutreturn_release, | |
6266 | }; | |
6267 | ||
6268 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6269 | { | |
6270 | struct rpc_task *task; | |
6271 | struct rpc_message msg = { | |
6272 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6273 | .rpc_argp = &lrp->args, | |
6274 | .rpc_resp = &lrp->res, | |
6275 | }; | |
6276 | struct rpc_task_setup task_setup_data = { | |
6277 | .rpc_client = lrp->clp->cl_rpcclient, | |
6278 | .rpc_message = &msg, | |
6279 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6280 | .callback_data = lrp, | |
6281 | }; | |
6282 | int status; | |
6283 | ||
6284 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6285 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6286 | task = rpc_run_task(&task_setup_data); |
6287 | if (IS_ERR(task)) | |
6288 | return PTR_ERR(task); | |
6289 | status = task->tk_status; | |
6290 | dprintk("<-- %s status=%d\n", __func__, status); | |
6291 | rpc_put_task(task); | |
6292 | return status; | |
6293 | } | |
6294 | ||
7f11d8d3 AA |
6295 | /* |
6296 | * Retrieve the list of Data Server devices from the MDS. | |
6297 | */ | |
6298 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6299 | const struct nfs_fh *fh, | |
6300 | struct pnfs_devicelist *devlist) | |
6301 | { | |
6302 | struct nfs4_getdevicelist_args args = { | |
6303 | .fh = fh, | |
6304 | .layoutclass = server->pnfs_curr_ld->id, | |
6305 | }; | |
6306 | struct nfs4_getdevicelist_res res = { | |
6307 | .devlist = devlist, | |
6308 | }; | |
6309 | struct rpc_message msg = { | |
6310 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6311 | .rpc_argp = &args, | |
6312 | .rpc_resp = &res, | |
6313 | }; | |
6314 | int status; | |
6315 | ||
6316 | dprintk("--> %s\n", __func__); | |
6317 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6318 | &res.seq_res, 0); | |
6319 | dprintk("<-- %s status=%d\n", __func__, status); | |
6320 | return status; | |
6321 | } | |
6322 | ||
6323 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6324 | const struct nfs_fh *fh, | |
6325 | struct pnfs_devicelist *devlist) | |
6326 | { | |
6327 | struct nfs4_exception exception = { }; | |
6328 | int err; | |
6329 | ||
6330 | do { | |
6331 | err = nfs4_handle_exception(server, | |
6332 | _nfs4_getdevicelist(server, fh, devlist), | |
6333 | &exception); | |
6334 | } while (exception.retry); | |
6335 | ||
6336 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6337 | err, devlist->num_devs); | |
6338 | ||
6339 | return err; | |
6340 | } | |
6341 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6342 | ||
b1f69b75 AA |
6343 | static int |
6344 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6345 | { | |
6346 | struct nfs4_getdeviceinfo_args args = { | |
6347 | .pdev = pdev, | |
6348 | }; | |
6349 | struct nfs4_getdeviceinfo_res res = { | |
6350 | .pdev = pdev, | |
6351 | }; | |
6352 | struct rpc_message msg = { | |
6353 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6354 | .rpc_argp = &args, | |
6355 | .rpc_resp = &res, | |
6356 | }; | |
6357 | int status; | |
6358 | ||
6359 | dprintk("--> %s\n", __func__); | |
7c513058 | 6360 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6361 | dprintk("<-- %s status=%d\n", __func__, status); |
6362 | ||
6363 | return status; | |
6364 | } | |
6365 | ||
6366 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6367 | { | |
6368 | struct nfs4_exception exception = { }; | |
6369 | int err; | |
6370 | ||
6371 | do { | |
6372 | err = nfs4_handle_exception(server, | |
6373 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6374 | &exception); | |
6375 | } while (exception.retry); | |
6376 | return err; | |
6377 | } | |
6378 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6379 | ||
863a3c6c AA |
6380 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6381 | { | |
6382 | struct nfs4_layoutcommit_data *data = calldata; | |
6383 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6384 | ||
6385 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6386 | &data->res.seq_res, task)) |
863a3c6c AA |
6387 | return; |
6388 | rpc_call_start(task); | |
6389 | } | |
6390 | ||
6391 | static void | |
6392 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6393 | { | |
6394 | struct nfs4_layoutcommit_data *data = calldata; | |
6395 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6396 | ||
6397 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6398 | return; | |
6399 | ||
6400 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6401 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6402 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6403 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6404 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6405 | task->tk_status = 0; |
e59d27e0 TM |
6406 | break; |
6407 | case 0: | |
863a3c6c AA |
6408 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6409 | data->res.fattr); | |
e59d27e0 TM |
6410 | break; |
6411 | default: | |
6412 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6413 | rpc_restart_call_prepare(task); | |
6414 | return; | |
6415 | } | |
6416 | } | |
863a3c6c AA |
6417 | } |
6418 | ||
6419 | static void nfs4_layoutcommit_release(void *calldata) | |
6420 | { | |
6421 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6422 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6423 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6424 | |
db29c089 | 6425 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6426 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6427 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6428 | list_del_init(&lseg->pls_lc_list); | |
6429 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6430 | &lseg->pls_flags)) | |
6431 | put_lseg(lseg); | |
6432 | } | |
92407e75 PT |
6433 | |
6434 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6435 | smp_mb__after_clear_bit(); | |
6436 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6437 | ||
863a3c6c AA |
6438 | put_rpccred(data->cred); |
6439 | kfree(data); | |
6440 | } | |
6441 | ||
6442 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6443 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6444 | .rpc_call_done = nfs4_layoutcommit_done, | |
6445 | .rpc_release = nfs4_layoutcommit_release, | |
6446 | }; | |
6447 | ||
6448 | int | |
ef311537 | 6449 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6450 | { |
6451 | struct rpc_message msg = { | |
6452 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6453 | .rpc_argp = &data->args, | |
6454 | .rpc_resp = &data->res, | |
6455 | .rpc_cred = data->cred, | |
6456 | }; | |
6457 | struct rpc_task_setup task_setup_data = { | |
6458 | .task = &data->task, | |
6459 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6460 | .rpc_message = &msg, | |
6461 | .callback_ops = &nfs4_layoutcommit_ops, | |
6462 | .callback_data = data, | |
6463 | .flags = RPC_TASK_ASYNC, | |
6464 | }; | |
6465 | struct rpc_task *task; | |
6466 | int status = 0; | |
6467 | ||
6468 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6469 | "lbw: %llu inode %lu\n", | |
6470 | data->task.tk_pid, sync, | |
6471 | data->args.lastbytewritten, | |
6472 | data->args.inode->i_ino); | |
6473 | ||
9d12b216 | 6474 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6475 | task = rpc_run_task(&task_setup_data); |
6476 | if (IS_ERR(task)) | |
6477 | return PTR_ERR(task); | |
ef311537 | 6478 | if (sync == false) |
863a3c6c AA |
6479 | goto out; |
6480 | status = nfs4_wait_for_completion_rpc_task(task); | |
6481 | if (status != 0) | |
6482 | goto out; | |
6483 | status = task->tk_status; | |
6484 | out: | |
6485 | dprintk("%s: status %d\n", __func__, status); | |
6486 | rpc_put_task(task); | |
6487 | return status; | |
6488 | } | |
fca78d6d BS |
6489 | |
6490 | static int | |
6491 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6492 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6493 | { | |
6494 | struct nfs41_secinfo_no_name_args args = { | |
6495 | .style = SECINFO_STYLE_CURRENT_FH, | |
6496 | }; | |
6497 | struct nfs4_secinfo_res res = { | |
6498 | .flavors = flavors, | |
6499 | }; | |
6500 | struct rpc_message msg = { | |
6501 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6502 | .rpc_argp = &args, | |
6503 | .rpc_resp = &res, | |
6504 | }; | |
6505 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6506 | } | |
6507 | ||
6508 | static int | |
6509 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6510 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6511 | { | |
6512 | struct nfs4_exception exception = { }; | |
6513 | int err; | |
6514 | do { | |
6515 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6516 | switch (err) { | |
6517 | case 0: | |
6518 | case -NFS4ERR_WRONGSEC: | |
6519 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6520 | goto out; |
fca78d6d BS |
6521 | default: |
6522 | err = nfs4_handle_exception(server, err, &exception); | |
6523 | } | |
6524 | } while (exception.retry); | |
05e9cfb4 | 6525 | out: |
fca78d6d BS |
6526 | return err; |
6527 | } | |
6528 | ||
6529 | static int | |
6530 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6531 | struct nfs_fsinfo *info) | |
6532 | { | |
6533 | int err; | |
6534 | struct page *page; | |
6535 | rpc_authflavor_t flavor; | |
6536 | struct nfs4_secinfo_flavors *flavors; | |
6537 | ||
6538 | page = alloc_page(GFP_KERNEL); | |
6539 | if (!page) { | |
6540 | err = -ENOMEM; | |
6541 | goto out; | |
6542 | } | |
6543 | ||
6544 | flavors = page_address(page); | |
6545 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6546 | ||
6547 | /* | |
6548 | * Fall back on "guess and check" method if | |
6549 | * the server doesn't support SECINFO_NO_NAME | |
6550 | */ | |
6551 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6552 | err = nfs4_find_root_sec(server, fhandle, info); | |
6553 | goto out_freepage; | |
6554 | } | |
6555 | if (err) | |
6556 | goto out_freepage; | |
6557 | ||
6558 | flavor = nfs_find_best_sec(flavors); | |
6559 | if (err == 0) | |
6560 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6561 | ||
6562 | out_freepage: | |
6563 | put_page(page); | |
6564 | if (err == -EACCES) | |
6565 | return -EPERM; | |
6566 | out: | |
6567 | return err; | |
6568 | } | |
1cab0652 BS |
6569 | |
6570 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6571 | { |
6572 | int status; | |
6573 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6574 | .stateid = stateid, |
7d974794 BS |
6575 | }; |
6576 | struct nfs41_test_stateid_res res; | |
6577 | struct rpc_message msg = { | |
6578 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6579 | .rpc_argp = &args, | |
6580 | .rpc_resp = &res, | |
6581 | }; | |
1cab0652 | 6582 | |
9d12b216 | 6583 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 | 6584 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
377e507d CL |
6585 | if (status != NFS_OK) |
6586 | return status; | |
6587 | return -res.status; | |
7d974794 BS |
6588 | } |
6589 | ||
1cab0652 | 6590 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6591 | { |
6592 | struct nfs4_exception exception = { }; | |
6593 | int err; | |
6594 | do { | |
377e507d CL |
6595 | err = _nfs41_test_stateid(server, stateid); |
6596 | if (err != -NFS4ERR_DELAY) | |
6597 | break; | |
6598 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6599 | } while (exception.retry); |
6600 | return err; | |
6601 | } | |
9aeda35f | 6602 | |
1cab0652 | 6603 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6604 | { |
9aeda35f | 6605 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6606 | .stateid = stateid, |
9aeda35f BS |
6607 | }; |
6608 | struct nfs41_free_stateid_res res; | |
6609 | struct rpc_message msg = { | |
6610 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6611 | .rpc_argp = &args, | |
6612 | .rpc_resp = &res, | |
6613 | }; | |
6614 | ||
9d12b216 | 6615 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
377e507d CL |
6616 | return nfs4_call_sync_sequence(server->client, server, &msg, |
6617 | &args.seq_args, &res.seq_res, 1); | |
9aeda35f BS |
6618 | } |
6619 | ||
1cab0652 | 6620 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6621 | { |
6622 | struct nfs4_exception exception = { }; | |
6623 | int err; | |
6624 | do { | |
377e507d CL |
6625 | err = _nfs4_free_stateid(server, stateid); |
6626 | if (err != -NFS4ERR_DELAY) | |
6627 | break; | |
6628 | nfs4_handle_exception(server, err, &exception); | |
9aeda35f BS |
6629 | } while (exception.retry); |
6630 | return err; | |
6631 | } | |
36281caa TM |
6632 | |
6633 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6634 | const nfs4_stateid *s2) | |
6635 | { | |
2d2f24ad | 6636 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6637 | return false; |
6638 | ||
2d2f24ad | 6639 | if (s1->seqid == s2->seqid) |
36281caa | 6640 | return true; |
2d2f24ad | 6641 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6642 | return true; |
6643 | ||
6644 | return false; | |
6645 | } | |
6646 | ||
557134a3 AA |
6647 | #endif /* CONFIG_NFS_V4_1 */ |
6648 | ||
36281caa TM |
6649 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6650 | const nfs4_stateid *s2) | |
6651 | { | |
f597c537 | 6652 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6653 | } |
6654 | ||
6655 | ||
17280175 | 6656 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6657 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6658 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6659 | .recover_open = nfs4_open_reclaim, |
6660 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6661 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6662 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
6663 | }; |
6664 | ||
591d71cb | 6665 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6666 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6667 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6668 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6669 | .recover_open = nfs4_open_reclaim, | |
6670 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6671 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6672 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6673 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
6674 | }; |
6675 | #endif /* CONFIG_NFS_V4_1 */ | |
6676 | ||
17280175 | 6677 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6678 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6679 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
6680 | .recover_open = nfs4_open_expired, | |
6681 | .recover_lock = nfs4_lock_expired, | |
6682 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 6683 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
6684 | }; |
6685 | ||
6686 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6687 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 6688 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 6689 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
6690 | .recover_open = nfs41_open_expired, |
6691 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 6692 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6693 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 6694 | }; |
591d71cb | 6695 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 6696 | |
17280175 | 6697 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 6698 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 6699 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 6700 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
6701 | }; |
6702 | ||
6703 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 6704 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 6705 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 6706 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 6707 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
6708 | }; |
6709 | #endif | |
6710 | ||
97dc1359 TM |
6711 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
6712 | .minor_version = 0, | |
6713 | .call_sync = _nfs4_call_sync, | |
36281caa | 6714 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 6715 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
6716 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6717 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6718 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6719 | }; |
6720 | ||
6721 | #if defined(CONFIG_NFS_V4_1) | |
6722 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6723 | .minor_version = 1, | |
6724 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 6725 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 6726 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
6727 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6728 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6729 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6730 | }; |
6731 | #endif | |
6732 | ||
97dc1359 TM |
6733 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6734 | [0] = &nfs_v4_0_minor_ops, | |
6735 | #if defined(CONFIG_NFS_V4_1) | |
6736 | [1] = &nfs_v4_1_minor_ops, | |
6737 | #endif | |
6738 | }; | |
6739 | ||
92e1d5be | 6740 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6741 | .permission = nfs_permission, |
6742 | .getattr = nfs_getattr, | |
6743 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6744 | .getxattr = generic_getxattr, |
6745 | .setxattr = generic_setxattr, | |
6746 | .listxattr = generic_listxattr, | |
6747 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6748 | }; |
6749 | ||
509de811 | 6750 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6751 | .version = 4, /* protocol version */ |
6752 | .dentry_ops = &nfs4_dentry_operations, | |
6753 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6754 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 6755 | .file_ops = &nfs4_file_operations, |
1da177e4 | 6756 | .getroot = nfs4_proc_get_root, |
281cad46 | 6757 | .submount = nfs4_submount, |
1da177e4 LT |
6758 | .getattr = nfs4_proc_getattr, |
6759 | .setattr = nfs4_proc_setattr, | |
6760 | .lookup = nfs4_proc_lookup, | |
6761 | .access = nfs4_proc_access, | |
6762 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6763 | .create = nfs4_proc_create, |
6764 | .remove = nfs4_proc_remove, | |
6765 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 6766 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
6767 | .unlink_done = nfs4_proc_unlink_done, |
6768 | .rename = nfs4_proc_rename, | |
d3d4152a | 6769 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 6770 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 6771 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
6772 | .link = nfs4_proc_link, |
6773 | .symlink = nfs4_proc_symlink, | |
6774 | .mkdir = nfs4_proc_mkdir, | |
6775 | .rmdir = nfs4_proc_remove, | |
6776 | .readdir = nfs4_proc_readdir, | |
6777 | .mknod = nfs4_proc_mknod, | |
6778 | .statfs = nfs4_proc_statfs, | |
6779 | .fsinfo = nfs4_proc_fsinfo, | |
6780 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6781 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6782 | .decode_dirent = nfs4_decode_dirent, |
6783 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 6784 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 6785 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 6786 | .read_done = nfs4_read_done, |
1da177e4 | 6787 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 6788 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 6789 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 6790 | .write_done = nfs4_write_done, |
1da177e4 | 6791 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 6792 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 6793 | .commit_done = nfs4_commit_done, |
1da177e4 | 6794 | .lock = nfs4_proc_lock, |
e50a1c2e | 6795 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6796 | .close_context = nfs4_close_context, |
2b484297 | 6797 | .open_context = nfs4_atomic_open, |
011e2a7f | 6798 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 6799 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 6800 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 6801 | .init_client = nfs4_init_client, |
cdb7eced | 6802 | .free_client = nfs4_free_client, |
1da177e4 LT |
6803 | }; |
6804 | ||
64c2ce8b AK |
6805 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6806 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6807 | .list = nfs4_xattr_list_nfs4_acl, | |
6808 | .get = nfs4_xattr_get_nfs4_acl, | |
6809 | .set = nfs4_xattr_set_nfs4_acl, | |
6810 | }; | |
6811 | ||
6812 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6813 | &nfs4_xattr_nfs4_acl_handler, | |
6814 | NULL | |
6815 | }; | |
6816 | ||
ef159e91 TM |
6817 | module_param(max_session_slots, ushort, 0644); |
6818 | MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 " | |
6819 | "requests the client will negotiate"); | |
6820 | ||
1da177e4 LT |
6821 | /* |
6822 | * Local variables: | |
6823 | * c-basic-offset: 8 | |
6824 | * End: | |
6825 | */ |