Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
42 | #include <linux/sunrpc/clnt.h> | |
43 | #include <linux/nfs.h> | |
44 | #include <linux/nfs4.h> | |
45 | #include <linux/nfs_fs.h> | |
46 | #include <linux/nfs_page.h> | |
1da177e4 | 47 | #include <linux/namei.h> |
02a913a7 | 48 | #include <linux/mount.h> |
99fe60d0 | 49 | #include <linux/module.h> |
5a0ffe54 | 50 | #include <linux/sunrpc/bc_xprt.h> |
1da177e4 | 51 | |
4ce79717 | 52 | #include "nfs4_fs.h" |
1da177e4 | 53 | #include "delegation.h" |
101070ca | 54 | #include "internal.h" |
006ea73e | 55 | #include "iostat.h" |
fc931582 | 56 | #include "callback.h" |
1da177e4 LT |
57 | |
58 | #define NFSDBG_FACILITY NFSDBG_PROC | |
59 | ||
2066fe89 | 60 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
61 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
62 | ||
a78cb57a TM |
63 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
64 | ||
cdd4e68b | 65 | struct nfs4_opendata; |
864472e9 | 66 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
1da177e4 | 67 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 68 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
9936781d TM |
69 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
70 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
1da177e4 | 71 | |
1da177e4 | 72 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 73 | static int nfs4_map_errors(int err) |
1da177e4 | 74 | { |
52567b03 TM |
75 | if (err >= -1000) |
76 | return err; | |
77 | switch (err) { | |
78 | case -NFS4ERR_RESOURCE: | |
79 | return -EREMOTEIO; | |
80 | default: | |
1da177e4 | 81 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 82 | __func__, -err); |
52567b03 | 83 | break; |
1da177e4 | 84 | } |
52567b03 | 85 | return -EIO; |
1da177e4 LT |
86 | } |
87 | ||
88 | /* | |
89 | * This is our standard bitmap for GETATTR requests. | |
90 | */ | |
91 | const u32 nfs4_fattr_bitmap[2] = { | |
92 | FATTR4_WORD0_TYPE | |
93 | | FATTR4_WORD0_CHANGE | |
94 | | FATTR4_WORD0_SIZE | |
95 | | FATTR4_WORD0_FSID | |
96 | | FATTR4_WORD0_FILEID, | |
97 | FATTR4_WORD1_MODE | |
98 | | FATTR4_WORD1_NUMLINKS | |
99 | | FATTR4_WORD1_OWNER | |
100 | | FATTR4_WORD1_OWNER_GROUP | |
101 | | FATTR4_WORD1_RAWDEV | |
102 | | FATTR4_WORD1_SPACE_USED | |
103 | | FATTR4_WORD1_TIME_ACCESS | |
104 | | FATTR4_WORD1_TIME_METADATA | |
105 | | FATTR4_WORD1_TIME_MODIFY | |
106 | }; | |
107 | ||
108 | const u32 nfs4_statfs_bitmap[2] = { | |
109 | FATTR4_WORD0_FILES_AVAIL | |
110 | | FATTR4_WORD0_FILES_FREE | |
111 | | FATTR4_WORD0_FILES_TOTAL, | |
112 | FATTR4_WORD1_SPACE_AVAIL | |
113 | | FATTR4_WORD1_SPACE_FREE | |
114 | | FATTR4_WORD1_SPACE_TOTAL | |
115 | }; | |
116 | ||
4ce79717 | 117 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
118 | FATTR4_WORD0_MAXLINK |
119 | | FATTR4_WORD0_MAXNAME, | |
120 | 0 | |
121 | }; | |
122 | ||
123 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
124 | | FATTR4_WORD0_MAXREAD | |
125 | | FATTR4_WORD0_MAXWRITE | |
126 | | FATTR4_WORD0_LEASE_TIME, | |
127 | 0 | |
128 | }; | |
129 | ||
830b8e33 MN |
130 | const u32 nfs4_fs_locations_bitmap[2] = { |
131 | FATTR4_WORD0_TYPE | |
132 | | FATTR4_WORD0_CHANGE | |
133 | | FATTR4_WORD0_SIZE | |
134 | | FATTR4_WORD0_FSID | |
135 | | FATTR4_WORD0_FILEID | |
136 | | FATTR4_WORD0_FS_LOCATIONS, | |
137 | FATTR4_WORD1_MODE | |
138 | | FATTR4_WORD1_NUMLINKS | |
139 | | FATTR4_WORD1_OWNER | |
140 | | FATTR4_WORD1_OWNER_GROUP | |
141 | | FATTR4_WORD1_RAWDEV | |
142 | | FATTR4_WORD1_SPACE_USED | |
143 | | FATTR4_WORD1_TIME_ACCESS | |
144 | | FATTR4_WORD1_TIME_METADATA | |
145 | | FATTR4_WORD1_TIME_MODIFY | |
146 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
147 | }; | |
148 | ||
bc4785cd | 149 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
150 | struct nfs4_readdir_arg *readdir) |
151 | { | |
0dbb4c67 | 152 | __be32 *start, *p; |
1da177e4 LT |
153 | |
154 | BUG_ON(readdir->count < 80); | |
155 | if (cookie > 2) { | |
b7ef1956 | 156 | readdir->cookie = cookie; |
1da177e4 LT |
157 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
158 | return; | |
159 | } | |
160 | ||
161 | readdir->cookie = 0; | |
162 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
163 | if (cookie == 2) | |
164 | return; | |
165 | ||
166 | /* | |
167 | * NFSv4 servers do not return entries for '.' and '..' | |
168 | * Therefore, we fake these entries here. We let '.' | |
169 | * have cookie 0 and '..' have cookie 1. Note that | |
170 | * when talking to the server, we always send cookie 0 | |
171 | * instead of 1 or 2. | |
172 | */ | |
0dbb4c67 | 173 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
174 | |
175 | if (cookie == 0) { | |
176 | *p++ = xdr_one; /* next */ | |
177 | *p++ = xdr_zero; /* cookie, first word */ | |
178 | *p++ = xdr_one; /* cookie, second word */ | |
179 | *p++ = xdr_one; /* entry len */ | |
180 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
181 | p++; | |
182 | *p++ = xdr_one; /* bitmap length */ | |
183 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
184 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 185 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
186 | } |
187 | ||
188 | *p++ = xdr_one; /* next */ | |
189 | *p++ = xdr_zero; /* cookie, first word */ | |
190 | *p++ = xdr_two; /* cookie, second word */ | |
191 | *p++ = xdr_two; /* entry len */ | |
192 | memcpy(p, "..\0\0", 4); /* entry */ | |
193 | p++; | |
194 | *p++ = xdr_one; /* bitmap length */ | |
195 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
196 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 197 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
198 | |
199 | readdir->pgbase = (char *)p - (char *)start; | |
200 | readdir->count -= readdir->pgbase; | |
201 | kunmap_atomic(start, KM_USER0); | |
202 | } | |
203 | ||
65de872e TM |
204 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
205 | { | |
206 | int res; | |
207 | ||
208 | might_sleep(); | |
209 | ||
e005e804 | 210 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 211 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
212 | return res; |
213 | } | |
214 | ||
215 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
216 | { | |
217 | int res = 0; | |
218 | ||
219 | might_sleep(); | |
220 | ||
221 | if (*timeout <= 0) | |
222 | *timeout = NFS4_POLL_RETRY_MIN; | |
223 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
224 | *timeout = NFS4_POLL_RETRY_MAX; | |
225 | schedule_timeout_killable(*timeout); | |
226 | if (fatal_signal_pending(current)) | |
227 | res = -ERESTARTSYS; | |
228 | *timeout <<= 1; | |
229 | return res; | |
230 | } | |
231 | ||
232 | /* This is the error handling routine for processes that are allowed | |
233 | * to sleep. | |
234 | */ | |
235 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
236 | { | |
237 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 238 | struct nfs4_state *state = exception->state; |
65de872e TM |
239 | int ret = errorcode; |
240 | ||
241 | exception->retry = 0; | |
242 | switch(errorcode) { | |
243 | case 0: | |
244 | return 0; | |
9e33bed5 TM |
245 | case -NFS4ERR_ADMIN_REVOKED: |
246 | case -NFS4ERR_BAD_STATEID: | |
247 | case -NFS4ERR_OPENMODE: | |
248 | if (state == NULL) | |
249 | break; | |
250 | nfs4_state_mark_reclaim_nograce(clp, state); | |
65de872e TM |
251 | case -NFS4ERR_STALE_CLIENTID: |
252 | case -NFS4ERR_STALE_STATEID: | |
253 | case -NFS4ERR_EXPIRED: | |
254 | nfs4_schedule_state_recovery(clp); | |
255 | ret = nfs4_wait_clnt_recover(clp); | |
256 | if (ret == 0) | |
257 | exception->retry = 1; | |
4745e315 | 258 | #if !defined(CONFIG_NFS_V4_1) |
65de872e | 259 | break; |
4745e315 AA |
260 | #else /* !defined(CONFIG_NFS_V4_1) */ |
261 | if (!nfs4_has_session(server->nfs_client)) | |
262 | break; | |
263 | /* FALLTHROUGH */ | |
264 | case -NFS4ERR_BADSESSION: | |
265 | case -NFS4ERR_BADSLOT: | |
266 | case -NFS4ERR_BAD_HIGH_SLOT: | |
267 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
268 | case -NFS4ERR_DEADSESSION: | |
269 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
270 | case -NFS4ERR_SEQ_MISORDERED: | |
271 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
272 | errorcode); | |
273 | set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state); | |
274 | exception->retry = 1; | |
275 | /* FALLTHROUGH */ | |
276 | #endif /* !defined(CONFIG_NFS_V4_1) */ | |
65de872e TM |
277 | case -NFS4ERR_FILE_OPEN: |
278 | case -NFS4ERR_GRACE: | |
279 | case -NFS4ERR_DELAY: | |
280 | ret = nfs4_delay(server->client, &exception->timeout); | |
281 | if (ret != 0) | |
282 | break; | |
283 | case -NFS4ERR_OLD_STATEID: | |
284 | exception->retry = 1; | |
285 | } | |
286 | /* We failed to handle the error */ | |
287 | return nfs4_map_errors(ret); | |
288 | } | |
289 | ||
290 | ||
26e976a8 | 291 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
1da177e4 | 292 | { |
7539bbab | 293 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
294 | spin_lock(&clp->cl_lock); |
295 | if (time_before(clp->cl_last_renewal,timestamp)) | |
296 | clp->cl_last_renewal = timestamp; | |
297 | spin_unlock(&clp->cl_lock); | |
298 | } | |
299 | ||
cccef3b9 AA |
300 | #if defined(CONFIG_NFS_V4_1) |
301 | ||
e2c4ab3c AA |
302 | /* |
303 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
304 | * | |
305 | * freeing a slot is trivially done by clearing its respective bit | |
306 | * in the bitmap. | |
307 | * If the freed slotid equals highest_used_slotid we want to update it | |
308 | * so that the server would be able to size down the slot table if needed, | |
309 | * otherwise we know that the highest_used_slotid is still in use. | |
310 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
311 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
312 | * highest slotid in use. | |
313 | * If none found, highest_used_slotid is set to -1. | |
314 | */ | |
315 | static void | |
316 | nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid) | |
317 | { | |
318 | int slotid = free_slotid; | |
319 | ||
320 | spin_lock(&tbl->slot_tbl_lock); | |
321 | /* clear used bit in bitmap */ | |
322 | __clear_bit(slotid, tbl->used_slots); | |
323 | ||
324 | /* update highest_used_slotid when it is freed */ | |
325 | if (slotid == tbl->highest_used_slotid) { | |
326 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
327 | if (slotid >= 0 && slotid < tbl->max_slots) | |
328 | tbl->highest_used_slotid = slotid; | |
329 | else | |
330 | tbl->highest_used_slotid = -1; | |
331 | } | |
332 | rpc_wake_up_next(&tbl->slot_tbl_waitq); | |
333 | spin_unlock(&tbl->slot_tbl_lock); | |
334 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, | |
335 | free_slotid, tbl->highest_used_slotid); | |
336 | } | |
337 | ||
13615871 AA |
338 | void nfs41_sequence_free_slot(const struct nfs_client *clp, |
339 | struct nfs4_sequence_res *res) | |
340 | { | |
341 | struct nfs4_slot_table *tbl; | |
342 | ||
343 | if (!nfs4_has_session(clp)) { | |
344 | dprintk("%s: No session\n", __func__); | |
345 | return; | |
346 | } | |
347 | tbl = &clp->cl_session->fc_slot_table; | |
348 | if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) { | |
349 | dprintk("%s: No slot\n", __func__); | |
350 | /* just wake up the next guy waiting since | |
351 | * we may have not consumed a slot after all */ | |
352 | rpc_wake_up_next(&tbl->slot_tbl_waitq); | |
353 | return; | |
354 | } | |
355 | nfs4_free_slot(tbl, res->sr_slotid); | |
356 | res->sr_slotid = NFS4_MAX_SLOT_TABLE; | |
357 | } | |
358 | ||
b0df806c AA |
359 | static void nfs41_sequence_done(struct nfs_client *clp, |
360 | struct nfs4_sequence_res *res, | |
361 | int rpc_status) | |
362 | { | |
363 | unsigned long timestamp; | |
364 | struct nfs4_slot_table *tbl; | |
365 | struct nfs4_slot *slot; | |
366 | ||
367 | /* | |
368 | * sr_status remains 1 if an RPC level error occurred. The server | |
369 | * may or may not have processed the sequence operation.. | |
370 | * Proceed as if the server received and processed the sequence | |
371 | * operation. | |
372 | */ | |
373 | if (res->sr_status == 1) | |
374 | res->sr_status = NFS_OK; | |
375 | ||
376 | /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */ | |
377 | if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) | |
378 | goto out; | |
379 | ||
380 | tbl = &clp->cl_session->fc_slot_table; | |
381 | slot = tbl->slots + res->sr_slotid; | |
382 | ||
383 | if (res->sr_status == 0) { | |
384 | /* Update the slot's sequence and clientid lease timer */ | |
385 | ++slot->seq_nr; | |
386 | timestamp = res->sr_renewal_time; | |
387 | spin_lock(&clp->cl_lock); | |
388 | if (time_before(clp->cl_last_renewal, timestamp)) | |
389 | clp->cl_last_renewal = timestamp; | |
390 | spin_unlock(&clp->cl_lock); | |
391 | return; | |
392 | } | |
393 | out: | |
394 | /* The session may be reset by one of the error handlers. */ | |
395 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
396 | nfs41_sequence_free_slot(clp, res); | |
397 | } | |
398 | ||
510b8175 BH |
399 | /* |
400 | * nfs4_find_slot - efficiently look for a free slot | |
401 | * | |
402 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
403 | * If found, we mark the slot as used, update the highest_used_slotid, | |
404 | * and respectively set up the sequence operation args. | |
405 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
406 | * |
407 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
408 | */ |
409 | static u8 | |
410 | nfs4_find_slot(struct nfs4_slot_table *tbl, struct rpc_task *task) | |
411 | { | |
412 | int slotid; | |
413 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
414 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
415 | ||
510b8175 BH |
416 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
417 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
418 | tbl->max_slots); | |
419 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
420 | if (slotid >= tbl->max_slots) | |
421 | goto out; | |
422 | __set_bit(slotid, tbl->used_slots); | |
423 | if (slotid > tbl->highest_used_slotid) | |
424 | tbl->highest_used_slotid = slotid; | |
425 | ret_id = slotid; | |
426 | out: | |
427 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
428 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
429 | return ret_id; |
430 | } | |
431 | ||
b069d94a AA |
432 | static int nfs4_recover_session(struct nfs4_session *session) |
433 | { | |
434 | struct nfs_client *clp = session->clp; | |
a78cb57a | 435 | unsigned int loop; |
b069d94a AA |
436 | int ret; |
437 | ||
a78cb57a | 438 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
b069d94a AA |
439 | ret = nfs4_wait_clnt_recover(clp); |
440 | if (ret != 0) | |
a78cb57a | 441 | break; |
b069d94a AA |
442 | if (!test_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state)) |
443 | break; | |
444 | nfs4_schedule_state_manager(clp); | |
a78cb57a | 445 | ret = -EIO; |
b069d94a | 446 | } |
a78cb57a | 447 | return ret; |
b069d94a AA |
448 | } |
449 | ||
ce5039c1 AA |
450 | static int nfs41_setup_sequence(struct nfs4_session *session, |
451 | struct nfs4_sequence_args *args, | |
452 | struct nfs4_sequence_res *res, | |
453 | int cache_reply, | |
454 | struct rpc_task *task) | |
455 | { | |
fbcd4abc AA |
456 | struct nfs4_slot *slot; |
457 | struct nfs4_slot_table *tbl; | |
b069d94a | 458 | int status = 0; |
fbcd4abc AA |
459 | u8 slotid; |
460 | ||
461 | dprintk("--> %s\n", __func__); | |
ce5039c1 AA |
462 | /* slot already allocated? */ |
463 | if (res->sr_slotid != NFS4_MAX_SLOT_TABLE) | |
464 | return 0; | |
465 | ||
466 | memset(res, 0, sizeof(*res)); | |
467 | res->sr_slotid = NFS4_MAX_SLOT_TABLE; | |
fbcd4abc AA |
468 | tbl = &session->fc_slot_table; |
469 | ||
470 | spin_lock(&tbl->slot_tbl_lock); | |
b069d94a AA |
471 | if (test_bit(NFS4CLNT_SESSION_SETUP, &session->clp->cl_state)) { |
472 | if (tbl->highest_used_slotid != -1) { | |
473 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
474 | spin_unlock(&tbl->slot_tbl_lock); | |
475 | dprintk("<-- %s: Session reset: draining\n", __func__); | |
476 | return -EAGAIN; | |
477 | } | |
478 | ||
479 | /* The slot table is empty; start the reset thread */ | |
480 | dprintk("%s Session Reset\n", __func__); | |
481 | spin_unlock(&tbl->slot_tbl_lock); | |
482 | status = nfs4_recover_session(session); | |
483 | if (status) | |
484 | return status; | |
485 | spin_lock(&tbl->slot_tbl_lock); | |
486 | } | |
487 | ||
fbcd4abc AA |
488 | slotid = nfs4_find_slot(tbl, task); |
489 | if (slotid == NFS4_MAX_SLOT_TABLE) { | |
490 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
491 | spin_unlock(&tbl->slot_tbl_lock); | |
492 | dprintk("<-- %s: no free slots\n", __func__); | |
493 | return -EAGAIN; | |
494 | } | |
495 | spin_unlock(&tbl->slot_tbl_lock); | |
496 | ||
497 | slot = tbl->slots + slotid; | |
99fe60d0 | 498 | args->sa_session = session; |
fbcd4abc AA |
499 | args->sa_slotid = slotid; |
500 | args->sa_cache_this = cache_reply; | |
501 | ||
502 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
503 | ||
99fe60d0 | 504 | res->sr_session = session; |
fbcd4abc AA |
505 | res->sr_slotid = slotid; |
506 | res->sr_renewal_time = jiffies; | |
507 | /* | |
508 | * sr_status is only set in decode_sequence, and so will remain | |
509 | * set to 1 if an rpc level failure occurs. | |
510 | */ | |
511 | res->sr_status = 1; | |
ce5039c1 AA |
512 | return 0; |
513 | } | |
514 | ||
515 | int nfs4_setup_sequence(struct nfs_client *clp, | |
516 | struct nfs4_sequence_args *args, | |
517 | struct nfs4_sequence_res *res, | |
518 | int cache_reply, | |
519 | struct rpc_task *task) | |
520 | { | |
521 | int ret = 0; | |
522 | ||
523 | dprintk("--> %s clp %p session %p sr_slotid %d\n", | |
524 | __func__, clp, clp->cl_session, res->sr_slotid); | |
525 | ||
526 | if (!nfs4_has_session(clp)) | |
527 | goto out; | |
528 | ret = nfs41_setup_sequence(clp->cl_session, args, res, cache_reply, | |
529 | task); | |
530 | if (ret != -EAGAIN) { | |
531 | /* terminate rpc task */ | |
532 | task->tk_status = ret; | |
533 | task->tk_action = NULL; | |
534 | } | |
535 | out: | |
536 | dprintk("<-- %s status=%d\n", __func__, ret); | |
537 | return ret; | |
538 | } | |
539 | ||
540 | struct nfs41_call_sync_data { | |
541 | struct nfs_client *clp; | |
542 | struct nfs4_sequence_args *seq_args; | |
543 | struct nfs4_sequence_res *seq_res; | |
544 | int cache_reply; | |
545 | }; | |
546 | ||
547 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
548 | { | |
549 | struct nfs41_call_sync_data *data = calldata; | |
550 | ||
551 | dprintk("--> %s data->clp->cl_session %p\n", __func__, | |
552 | data->clp->cl_session); | |
553 | if (nfs4_setup_sequence(data->clp, data->seq_args, | |
554 | data->seq_res, data->cache_reply, task)) | |
555 | return; | |
556 | rpc_call_start(task); | |
557 | } | |
558 | ||
69ab40c4 AA |
559 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
560 | { | |
561 | struct nfs41_call_sync_data *data = calldata; | |
562 | ||
563 | nfs41_sequence_done(data->clp, data->seq_res, task->tk_status); | |
564 | nfs41_sequence_free_slot(data->clp, data->seq_res); | |
565 | } | |
566 | ||
ce5039c1 AA |
567 | struct rpc_call_ops nfs41_call_sync_ops = { |
568 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 569 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
570 | }; |
571 | ||
572 | static int nfs4_call_sync_sequence(struct nfs_client *clp, | |
573 | struct rpc_clnt *clnt, | |
574 | struct rpc_message *msg, | |
575 | struct nfs4_sequence_args *args, | |
576 | struct nfs4_sequence_res *res, | |
577 | int cache_reply) | |
578 | { | |
579 | int ret; | |
580 | struct rpc_task *task; | |
581 | struct nfs41_call_sync_data data = { | |
582 | .clp = clp, | |
583 | .seq_args = args, | |
584 | .seq_res = res, | |
585 | .cache_reply = cache_reply, | |
586 | }; | |
587 | struct rpc_task_setup task_setup = { | |
588 | .rpc_client = clnt, | |
589 | .rpc_message = msg, | |
590 | .callback_ops = &nfs41_call_sync_ops, | |
591 | .callback_data = &data | |
592 | }; | |
593 | ||
594 | res->sr_slotid = NFS4_MAX_SLOT_TABLE; | |
595 | task = rpc_run_task(&task_setup); | |
596 | if (IS_ERR(task)) | |
597 | ret = PTR_ERR(task); | |
598 | else { | |
599 | ret = task->tk_status; | |
600 | rpc_put_task(task); | |
601 | } | |
602 | return ret; | |
603 | } | |
604 | ||
cccef3b9 AA |
605 | int _nfs4_call_sync_session(struct nfs_server *server, |
606 | struct rpc_message *msg, | |
607 | struct nfs4_sequence_args *args, | |
608 | struct nfs4_sequence_res *res, | |
609 | int cache_reply) | |
610 | { | |
ce5039c1 AA |
611 | return nfs4_call_sync_sequence(server->nfs_client, server->client, |
612 | msg, args, res, cache_reply); | |
cccef3b9 AA |
613 | } |
614 | ||
615 | #endif /* CONFIG_NFS_V4_1 */ | |
616 | ||
617 | int _nfs4_call_sync(struct nfs_server *server, | |
618 | struct rpc_message *msg, | |
619 | struct nfs4_sequence_args *args, | |
620 | struct nfs4_sequence_res *res, | |
621 | int cache_reply) | |
622 | { | |
f3752975 | 623 | args->sa_session = res->sr_session = NULL; |
cccef3b9 AA |
624 | return rpc_call_sync(server->client, msg, 0); |
625 | } | |
626 | ||
627 | #define nfs4_call_sync(server, msg, args, res, cache_reply) \ | |
628 | (server)->nfs_client->cl_call_sync((server), (msg), &(args)->seq_args, \ | |
629 | &(res)->seq_res, (cache_reply)) | |
630 | ||
b0df806c AA |
631 | static void nfs4_sequence_done(const struct nfs_server *server, |
632 | struct nfs4_sequence_res *res, int rpc_status) | |
633 | { | |
634 | #ifdef CONFIG_NFS_V4_1 | |
635 | if (nfs4_has_session(server->nfs_client)) | |
636 | nfs41_sequence_done(server->nfs_client, res, rpc_status); | |
637 | #endif /* CONFIG_NFS_V4_1 */ | |
638 | } | |
639 | ||
640 | /* no restart, therefore free slot here */ | |
641 | static void nfs4_sequence_done_free_slot(const struct nfs_server *server, | |
642 | struct nfs4_sequence_res *res, | |
643 | int rpc_status) | |
644 | { | |
645 | nfs4_sequence_done(server, res, rpc_status); | |
646 | nfs4_sequence_free_slot(server->nfs_client, res); | |
647 | } | |
648 | ||
38478b24 | 649 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 650 | { |
38478b24 | 651 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 652 | |
38478b24 | 653 | spin_lock(&dir->i_lock); |
40d24704 TM |
654 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
655 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 656 | nfs_force_lookup_revalidate(dir); |
40d24704 | 657 | nfsi->change_attr = cinfo->after; |
38478b24 | 658 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
659 | } |
660 | ||
e56e0b78 | 661 | struct nfs4_opendata { |
c6d00e63 | 662 | struct kref kref; |
e56e0b78 TM |
663 | struct nfs_openargs o_arg; |
664 | struct nfs_openres o_res; | |
cdd4e68b TM |
665 | struct nfs_open_confirmargs c_arg; |
666 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
667 | struct nfs_fattr f_attr; |
668 | struct nfs_fattr dir_attr; | |
ad389da7 | 669 | struct path path; |
e56e0b78 TM |
670 | struct dentry *dir; |
671 | struct nfs4_state_owner *owner; | |
aac00a8d | 672 | struct nfs4_state *state; |
e56e0b78 | 673 | struct iattr attrs; |
26e976a8 | 674 | unsigned long timestamp; |
3e309914 | 675 | unsigned int rpc_done : 1; |
24ac23ab TM |
676 | int rpc_status; |
677 | int cancelled; | |
e56e0b78 TM |
678 | }; |
679 | ||
2ced46c2 TM |
680 | |
681 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
682 | { | |
683 | p->o_res.f_attr = &p->f_attr; | |
684 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
685 | p->o_res.seqid = p->o_arg.seqid; |
686 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
687 | p->o_res.server = p->o_arg.server; |
688 | nfs_fattr_init(&p->f_attr); | |
689 | nfs_fattr_init(&p->dir_attr); | |
578e4585 | 690 | p->o_res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
2ced46c2 TM |
691 | } |
692 | ||
ad389da7 | 693 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
dc0b027d | 694 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
e56e0b78 TM |
695 | const struct iattr *attrs) |
696 | { | |
ad389da7 | 697 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
698 | struct inode *dir = parent->d_inode; |
699 | struct nfs_server *server = NFS_SERVER(dir); | |
700 | struct nfs4_opendata *p; | |
701 | ||
702 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
703 | if (p == NULL) | |
704 | goto err; | |
705 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid); | |
706 | if (p->o_arg.seqid == NULL) | |
707 | goto err_free; | |
ad389da7 TM |
708 | p->path.mnt = mntget(path->mnt); |
709 | p->path.dentry = dget(path->dentry); | |
e56e0b78 TM |
710 | p->dir = parent; |
711 | p->owner = sp; | |
712 | atomic_inc(&sp->so_count); | |
713 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
714 | p->o_arg.open_flags = flags; |
715 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 716 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 717 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 718 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
719 | p->o_arg.server = server; |
720 | p->o_arg.bitmask = server->attr_bitmask; | |
721 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
e56e0b78 TM |
722 | if (flags & O_EXCL) { |
723 | u32 *s = (u32 *) p->o_arg.u.verifier.data; | |
724 | s[0] = jiffies; | |
725 | s[1] = current->pid; | |
726 | } else if (flags & O_CREAT) { | |
727 | p->o_arg.u.attrs = &p->attrs; | |
728 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
729 | } | |
cdd4e68b TM |
730 | p->c_arg.fh = &p->o_res.fh; |
731 | p->c_arg.stateid = &p->o_res.stateid; | |
732 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 733 | nfs4_init_opendata_res(p); |
c6d00e63 | 734 | kref_init(&p->kref); |
e56e0b78 TM |
735 | return p; |
736 | err_free: | |
737 | kfree(p); | |
738 | err: | |
739 | dput(parent); | |
740 | return NULL; | |
741 | } | |
742 | ||
c6d00e63 | 743 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 744 | { |
c6d00e63 TM |
745 | struct nfs4_opendata *p = container_of(kref, |
746 | struct nfs4_opendata, kref); | |
747 | ||
748 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
749 | if (p->state != NULL) |
750 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
751 | nfs4_put_state_owner(p->owner); |
752 | dput(p->dir); | |
31f31db1 | 753 | path_put(&p->path); |
c6d00e63 TM |
754 | kfree(p); |
755 | } | |
756 | ||
757 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
758 | { | |
759 | if (p != NULL) | |
760 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
761 | } |
762 | ||
06f814a3 TM |
763 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
764 | { | |
06f814a3 TM |
765 | int ret; |
766 | ||
06f814a3 | 767 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
768 | return ret; |
769 | } | |
770 | ||
dc0b027d | 771 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
772 | { |
773 | int ret = 0; | |
dc0b027d TM |
774 | |
775 | if (open_mode & O_EXCL) | |
776 | goto out; | |
777 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 TM |
778 | case FMODE_READ: |
779 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
780 | break; |
781 | case FMODE_WRITE: | |
782 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
783 | break; |
784 | case FMODE_READ|FMODE_WRITE: | |
785 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; | |
786 | } | |
dc0b027d | 787 | out: |
6ee41268 TM |
788 | return ret; |
789 | } | |
790 | ||
dc0b027d | 791 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 792 | { |
dc0b027d | 793 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 794 | return 0; |
15c831bf | 795 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 796 | return 0; |
b7391f44 | 797 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
798 | return 1; |
799 | } | |
800 | ||
dc0b027d | 801 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 802 | { |
dc0b027d | 803 | switch (fmode) { |
e7616923 TM |
804 | case FMODE_WRITE: |
805 | state->n_wronly++; | |
806 | break; | |
807 | case FMODE_READ: | |
808 | state->n_rdonly++; | |
809 | break; | |
810 | case FMODE_READ|FMODE_WRITE: | |
811 | state->n_rdwr++; | |
812 | } | |
dc0b027d | 813 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
814 | } |
815 | ||
dc0b027d | 816 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
817 | { |
818 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
819 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
820 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 821 | switch (fmode) { |
003707c7 TM |
822 | case FMODE_READ: |
823 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
824 | break; | |
825 | case FMODE_WRITE: | |
826 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
827 | break; | |
828 | case FMODE_READ|FMODE_WRITE: | |
829 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
830 | } | |
e7616923 TM |
831 | } |
832 | ||
dc0b027d | 833 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 834 | { |
8bda4e4c | 835 | write_seqlock(&state->seqlock); |
dc0b027d | 836 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 837 | write_sequnlock(&state->seqlock); |
003707c7 TM |
838 | } |
839 | ||
dc0b027d | 840 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 841 | { |
8bda4e4c TM |
842 | /* |
843 | * Protect the call to nfs4_state_set_mode_locked and | |
844 | * serialise the stateid update | |
845 | */ | |
846 | write_seqlock(&state->seqlock); | |
003707c7 TM |
847 | if (deleg_stateid != NULL) { |
848 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
849 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
850 | } | |
851 | if (open_stateid != NULL) | |
dc0b027d | 852 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
853 | write_sequnlock(&state->seqlock); |
854 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 855 | update_open_stateflags(state, fmode); |
ec073428 | 856 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
857 | } |
858 | ||
dc0b027d | 859 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
860 | { |
861 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
862 | struct nfs_delegation *deleg_cur; | |
863 | int ret = 0; | |
864 | ||
dc0b027d | 865 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
866 | |
867 | rcu_read_lock(); | |
868 | deleg_cur = rcu_dereference(nfsi->delegation); | |
869 | if (deleg_cur == NULL) | |
870 | goto no_delegation; | |
871 | ||
872 | spin_lock(&deleg_cur->lock); | |
873 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 874 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
875 | goto no_delegation_unlock; |
876 | ||
877 | if (delegation == NULL) | |
878 | delegation = &deleg_cur->stateid; | |
879 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
880 | goto no_delegation_unlock; | |
881 | ||
b7391f44 | 882 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 883 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
884 | ret = 1; |
885 | no_delegation_unlock: | |
886 | spin_unlock(&deleg_cur->lock); | |
887 | no_delegation: | |
888 | rcu_read_unlock(); | |
889 | ||
890 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 891 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
892 | ret = 1; |
893 | } | |
894 | ||
895 | return ret; | |
896 | } | |
897 | ||
898 | ||
dc0b027d | 899 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
900 | { |
901 | struct nfs_delegation *delegation; | |
902 | ||
903 | rcu_read_lock(); | |
904 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 905 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
906 | rcu_read_unlock(); |
907 | return; | |
908 | } | |
909 | rcu_read_unlock(); | |
910 | nfs_inode_return_delegation(inode); | |
911 | } | |
912 | ||
6ee41268 | 913 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
914 | { |
915 | struct nfs4_state *state = opendata->state; | |
916 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
917 | struct nfs_delegation *delegation; | |
dc0b027d TM |
918 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
919 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
920 | nfs4_stateid stateid; |
921 | int ret = -EAGAIN; | |
922 | ||
aac00a8d | 923 | for (;;) { |
dc0b027d | 924 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 925 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
926 | if (can_open_cached(state, fmode, open_mode)) { |
927 | update_open_stateflags(state, fmode); | |
6ee41268 | 928 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
929 | goto out_return_state; |
930 | } | |
931 | spin_unlock(&state->owner->so_lock); | |
932 | } | |
34310430 TM |
933 | rcu_read_lock(); |
934 | delegation = rcu_dereference(nfsi->delegation); | |
935 | if (delegation == NULL || | |
dc0b027d | 936 | !can_open_delegated(delegation, fmode)) { |
34310430 | 937 | rcu_read_unlock(); |
aac00a8d | 938 | break; |
34310430 | 939 | } |
aac00a8d TM |
940 | /* Save the delegation */ |
941 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
942 | rcu_read_unlock(); | |
af22f94a | 943 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
944 | if (ret != 0) |
945 | goto out; | |
946 | ret = -EAGAIN; | |
34310430 TM |
947 | |
948 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 949 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 950 | goto out_return_state; |
aac00a8d | 951 | } |
aac00a8d TM |
952 | out: |
953 | return ERR_PTR(ret); | |
954 | out_return_state: | |
955 | atomic_inc(&state->count); | |
956 | return state; | |
957 | } | |
958 | ||
24ac23ab TM |
959 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
960 | { | |
961 | struct inode *inode; | |
962 | struct nfs4_state *state = NULL; | |
003707c7 | 963 | struct nfs_delegation *delegation; |
1b370bc2 | 964 | int ret; |
24ac23ab | 965 | |
aac00a8d | 966 | if (!data->rpc_done) { |
6ee41268 | 967 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
968 | goto out; |
969 | } | |
970 | ||
1b370bc2 | 971 | ret = -EAGAIN; |
24ac23ab | 972 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 973 | goto err; |
24ac23ab | 974 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 975 | ret = PTR_ERR(inode); |
03f28e3a | 976 | if (IS_ERR(inode)) |
1b370bc2 TM |
977 | goto err; |
978 | ret = -ENOMEM; | |
24ac23ab TM |
979 | state = nfs4_get_open_state(inode, data->owner); |
980 | if (state == NULL) | |
1b370bc2 | 981 | goto err_put_inode; |
549d6ed5 | 982 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
983 | int delegation_flags = 0; |
984 | ||
003707c7 TM |
985 | rcu_read_lock(); |
986 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
987 | if (delegation) | |
988 | delegation_flags = delegation->flags; | |
989 | rcu_read_unlock(); | |
15c831bf | 990 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
991 | nfs_inode_set_delegation(state->inode, |
992 | data->owner->so_cred, | |
993 | &data->o_res); | |
994 | else | |
995 | nfs_inode_reclaim_delegation(state->inode, | |
996 | data->owner->so_cred, | |
997 | &data->o_res); | |
998 | } | |
34310430 TM |
999 | |
1000 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1001 | data->o_arg.fmode); |
24ac23ab | 1002 | iput(inode); |
aac00a8d | 1003 | out: |
24ac23ab | 1004 | return state; |
1b370bc2 TM |
1005 | err_put_inode: |
1006 | iput(inode); | |
1007 | err: | |
1008 | return ERR_PTR(ret); | |
24ac23ab TM |
1009 | } |
1010 | ||
864472e9 TM |
1011 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1012 | { | |
1013 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1014 | struct nfs_open_context *ctx; | |
1015 | ||
1016 | spin_lock(&state->inode->i_lock); | |
1017 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1018 | if (ctx->state != state) | |
1019 | continue; | |
1020 | get_nfs_open_context(ctx); | |
1021 | spin_unlock(&state->inode->i_lock); | |
1022 | return ctx; | |
1023 | } | |
1024 | spin_unlock(&state->inode->i_lock); | |
1025 | return ERR_PTR(-ENOENT); | |
1026 | } | |
1027 | ||
6f220ed5 TM |
1028 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1029 | { | |
1030 | struct nfs4_opendata *opendata; | |
1031 | ||
dc0b027d | 1032 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL); |
6f220ed5 TM |
1033 | if (opendata == NULL) |
1034 | return ERR_PTR(-ENOMEM); | |
1035 | opendata->state = state; | |
1036 | atomic_inc(&state->count); | |
1037 | return opendata; | |
1038 | } | |
1039 | ||
dc0b027d | 1040 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1041 | { |
2ced46c2 | 1042 | struct nfs4_state *newstate; |
864472e9 TM |
1043 | int ret; |
1044 | ||
dc0b027d TM |
1045 | opendata->o_arg.open_flags = 0; |
1046 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1047 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1048 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1049 | nfs4_init_opendata_res(opendata); | |
864472e9 TM |
1050 | ret = _nfs4_proc_open(opendata); |
1051 | if (ret != 0) | |
1052 | return ret; | |
2ced46c2 | 1053 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1054 | if (IS_ERR(newstate)) |
1055 | return PTR_ERR(newstate); | |
dc0b027d | 1056 | nfs4_close_state(&opendata->path, newstate, fmode); |
2ced46c2 | 1057 | *res = newstate; |
864472e9 TM |
1058 | return 0; |
1059 | } | |
1060 | ||
1061 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1062 | { | |
864472e9 | 1063 | struct nfs4_state *newstate; |
864472e9 TM |
1064 | int ret; |
1065 | ||
1066 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1067 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1068 | smp_rmb(); |
1069 | if (state->n_rdwr != 0) { | |
2ced46c2 | 1070 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1071 | if (ret != 0) |
1072 | return ret; | |
2ced46c2 TM |
1073 | if (newstate != state) |
1074 | return -ESTALE; | |
864472e9 TM |
1075 | } |
1076 | if (state->n_wronly != 0) { | |
2ced46c2 | 1077 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1078 | if (ret != 0) |
1079 | return ret; | |
2ced46c2 TM |
1080 | if (newstate != state) |
1081 | return -ESTALE; | |
864472e9 TM |
1082 | } |
1083 | if (state->n_rdonly != 0) { | |
2ced46c2 | 1084 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1085 | if (ret != 0) |
1086 | return ret; | |
2ced46c2 TM |
1087 | if (newstate != state) |
1088 | return -ESTALE; | |
864472e9 | 1089 | } |
1ac7e2fd TM |
1090 | /* |
1091 | * We may have performed cached opens for all three recoveries. | |
1092 | * Check if we need to update the current stateid. | |
1093 | */ | |
1094 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1095 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1096 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1097 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1098 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1099 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1100 | } |
864472e9 TM |
1101 | return 0; |
1102 | } | |
1103 | ||
1da177e4 LT |
1104 | /* |
1105 | * OPEN_RECLAIM: | |
1106 | * reclaim state on the server after a reboot. | |
1da177e4 | 1107 | */ |
539cd03a | 1108 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1109 | { |
1ac7e2fd | 1110 | struct nfs_delegation *delegation; |
864472e9 | 1111 | struct nfs4_opendata *opendata; |
dc0b027d | 1112 | fmode_t delegation_type = 0; |
1da177e4 LT |
1113 | int status; |
1114 | ||
6f220ed5 TM |
1115 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1116 | if (IS_ERR(opendata)) | |
1117 | return PTR_ERR(opendata); | |
864472e9 TM |
1118 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1119 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1120 | rcu_read_lock(); |
1121 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1122 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1123 | delegation_type = delegation->type; |
1ac7e2fd | 1124 | rcu_read_unlock(); |
864472e9 TM |
1125 | opendata->o_arg.u.delegation_type = delegation_type; |
1126 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1127 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1128 | return status; |
1129 | } | |
1130 | ||
539cd03a | 1131 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1132 | { |
1133 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1134 | struct nfs4_exception exception = { }; | |
1135 | int err; | |
1136 | do { | |
539cd03a | 1137 | err = _nfs4_do_open_reclaim(ctx, state); |
202b50dc TM |
1138 | if (err != -NFS4ERR_DELAY) |
1139 | break; | |
1140 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1141 | } while (exception.retry); |
1142 | return err; | |
1143 | } | |
1144 | ||
864472e9 TM |
1145 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1146 | { | |
1147 | struct nfs_open_context *ctx; | |
1148 | int ret; | |
1149 | ||
1150 | ctx = nfs4_state_find_open_context(state); | |
1151 | if (IS_ERR(ctx)) | |
1152 | return PTR_ERR(ctx); | |
539cd03a | 1153 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1154 | put_nfs_open_context(ctx); |
1155 | return ret; | |
1156 | } | |
1157 | ||
13437e12 | 1158 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1159 | { |
e56e0b78 | 1160 | struct nfs4_opendata *opendata; |
864472e9 | 1161 | int ret; |
1da177e4 | 1162 | |
6f220ed5 TM |
1163 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1164 | if (IS_ERR(opendata)) | |
1165 | return PTR_ERR(opendata); | |
e56e0b78 | 1166 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1167 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1168 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1169 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1170 | nfs4_opendata_put(opendata); |
864472e9 | 1171 | return ret; |
1da177e4 LT |
1172 | } |
1173 | ||
13437e12 | 1174 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1175 | { |
1176 | struct nfs4_exception exception = { }; | |
539cd03a | 1177 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1178 | int err; |
1179 | do { | |
13437e12 | 1180 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1181 | switch (err) { |
1182 | case 0: | |
965b5d67 TM |
1183 | case -ENOENT: |
1184 | case -ESTALE: | |
1185 | goto out; | |
1da177e4 LT |
1186 | case -NFS4ERR_STALE_CLIENTID: |
1187 | case -NFS4ERR_STALE_STATEID: | |
1188 | case -NFS4ERR_EXPIRED: | |
1189 | /* Don't recall a delegation if it was lost */ | |
7539bbab | 1190 | nfs4_schedule_state_recovery(server->nfs_client); |
965b5d67 TM |
1191 | goto out; |
1192 | case -ERESTARTSYS: | |
1193 | /* | |
1194 | * The show must go on: exit, but mark the | |
1195 | * stateid as needing recovery. | |
1196 | */ | |
1197 | case -NFS4ERR_ADMIN_REVOKED: | |
1198 | case -NFS4ERR_BAD_STATEID: | |
1199 | nfs4_state_mark_reclaim_nograce(server->nfs_client, state); | |
1200 | case -ENOMEM: | |
1201 | err = 0; | |
1202 | goto out; | |
1da177e4 LT |
1203 | } |
1204 | err = nfs4_handle_exception(server, err, &exception); | |
1205 | } while (exception.retry); | |
965b5d67 | 1206 | out: |
1da177e4 LT |
1207 | return err; |
1208 | } | |
1209 | ||
cdd4e68b TM |
1210 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1211 | { | |
1212 | struct nfs4_opendata *data = calldata; | |
1213 | ||
1214 | data->rpc_status = task->tk_status; | |
1215 | if (RPC_ASSASSINATED(task)) | |
1216 | return; | |
26e976a8 | 1217 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1218 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1219 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1220 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1221 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1222 | data->rpc_done = 1; |
26e976a8 | 1223 | } |
cdd4e68b TM |
1224 | } |
1225 | ||
1226 | static void nfs4_open_confirm_release(void *calldata) | |
1227 | { | |
1228 | struct nfs4_opendata *data = calldata; | |
1229 | struct nfs4_state *state = NULL; | |
1230 | ||
1231 | /* If this request hasn't been cancelled, do nothing */ | |
1232 | if (data->cancelled == 0) | |
1233 | goto out_free; | |
1234 | /* In case of error, no cleanup! */ | |
3e309914 | 1235 | if (!data->rpc_done) |
cdd4e68b | 1236 | goto out_free; |
cdd4e68b | 1237 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1238 | if (!IS_ERR(state)) |
dc0b027d | 1239 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
cdd4e68b | 1240 | out_free: |
c6d00e63 | 1241 | nfs4_opendata_put(data); |
cdd4e68b TM |
1242 | } |
1243 | ||
1244 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1245 | .rpc_call_done = nfs4_open_confirm_done, |
1246 | .rpc_release = nfs4_open_confirm_release, | |
1247 | }; | |
1248 | ||
1249 | /* | |
1250 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1251 | */ | |
1252 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1253 | { | |
1254 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1255 | struct rpc_task *task; | |
5138fde0 TM |
1256 | struct rpc_message msg = { |
1257 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1258 | .rpc_argp = &data->c_arg, | |
1259 | .rpc_resp = &data->c_res, | |
1260 | .rpc_cred = data->owner->so_cred, | |
1261 | }; | |
c970aa85 TM |
1262 | struct rpc_task_setup task_setup_data = { |
1263 | .rpc_client = server->client, | |
5138fde0 | 1264 | .rpc_message = &msg, |
c970aa85 TM |
1265 | .callback_ops = &nfs4_open_confirm_ops, |
1266 | .callback_data = data, | |
101070ca | 1267 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1268 | .flags = RPC_TASK_ASYNC, |
1269 | }; | |
1da177e4 LT |
1270 | int status; |
1271 | ||
c6d00e63 | 1272 | kref_get(&data->kref); |
3e309914 TM |
1273 | data->rpc_done = 0; |
1274 | data->rpc_status = 0; | |
5138fde0 | 1275 | data->timestamp = jiffies; |
c970aa85 | 1276 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1277 | if (IS_ERR(task)) |
cdd4e68b | 1278 | return PTR_ERR(task); |
cdd4e68b TM |
1279 | status = nfs4_wait_for_completion_rpc_task(task); |
1280 | if (status != 0) { | |
1281 | data->cancelled = 1; | |
1282 | smp_wmb(); | |
1283 | } else | |
1284 | status = data->rpc_status; | |
e6b3c4db | 1285 | rpc_put_task(task); |
1da177e4 LT |
1286 | return status; |
1287 | } | |
1288 | ||
24ac23ab | 1289 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1290 | { |
24ac23ab TM |
1291 | struct nfs4_opendata *data = calldata; |
1292 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1293 | |
24ac23ab TM |
1294 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1295 | return; | |
aac00a8d TM |
1296 | /* |
1297 | * Check if we still need to send an OPEN call, or if we can use | |
1298 | * a delegation instead. | |
1299 | */ | |
1300 | if (data->state != NULL) { | |
1301 | struct nfs_delegation *delegation; | |
1302 | ||
dc0b027d | 1303 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1304 | goto out_no_action; |
aac00a8d TM |
1305 | rcu_read_lock(); |
1306 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
1307 | if (delegation != NULL && | |
15c831bf | 1308 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 1309 | rcu_read_unlock(); |
6ee41268 | 1310 | goto out_no_action; |
aac00a8d TM |
1311 | } |
1312 | rcu_read_unlock(); | |
1313 | } | |
24ac23ab | 1314 | /* Update sequence id. */ |
9f958ab8 | 1315 | data->o_arg.id = sp->so_owner_id.id; |
24ac23ab | 1316 | data->o_arg.clientid = sp->so_client->cl_clientid; |
6f220ed5 | 1317 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1318 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1319 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1320 | } | |
26e976a8 | 1321 | data->timestamp = jiffies; |
d898528c AA |
1322 | if (nfs4_setup_sequence(data->o_arg.server->nfs_client, |
1323 | &data->o_arg.seq_args, | |
1324 | &data->o_res.seq_res, 1, task)) | |
1325 | return; | |
5138fde0 | 1326 | rpc_call_start(task); |
6ee41268 TM |
1327 | return; |
1328 | out_no_action: | |
1329 | task->tk_action = NULL; | |
1330 | ||
24ac23ab | 1331 | } |
1da177e4 | 1332 | |
24ac23ab TM |
1333 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1334 | { | |
1335 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1336 | |
24ac23ab | 1337 | data->rpc_status = task->tk_status; |
d898528c AA |
1338 | |
1339 | nfs4_sequence_done_free_slot(data->o_arg.server, &data->o_res.seq_res, | |
1340 | task->tk_status); | |
1341 | ||
24ac23ab TM |
1342 | if (RPC_ASSASSINATED(task)) |
1343 | return; | |
1344 | if (task->tk_status == 0) { | |
1345 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1346 | case S_IFREG: |
1347 | break; | |
1348 | case S_IFLNK: | |
24ac23ab | 1349 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1350 | break; |
1351 | case S_IFDIR: | |
24ac23ab | 1352 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1353 | break; |
1354 | default: | |
24ac23ab | 1355 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1356 | } |
26e976a8 | 1357 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1358 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1359 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1360 | } |
3e309914 | 1361 | data->rpc_done = 1; |
24ac23ab | 1362 | } |
6f926b5b | 1363 | |
24ac23ab TM |
1364 | static void nfs4_open_release(void *calldata) |
1365 | { | |
1366 | struct nfs4_opendata *data = calldata; | |
1367 | struct nfs4_state *state = NULL; | |
1368 | ||
1369 | /* If this request hasn't been cancelled, do nothing */ | |
1370 | if (data->cancelled == 0) | |
1371 | goto out_free; | |
1372 | /* In case of error, no cleanup! */ | |
3e309914 | 1373 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1374 | goto out_free; |
1375 | /* In case we need an open_confirm, no cleanup! */ | |
1376 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1377 | goto out_free; | |
24ac23ab | 1378 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1379 | if (!IS_ERR(state)) |
dc0b027d | 1380 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
24ac23ab | 1381 | out_free: |
c6d00e63 | 1382 | nfs4_opendata_put(data); |
24ac23ab TM |
1383 | } |
1384 | ||
1385 | static const struct rpc_call_ops nfs4_open_ops = { | |
1386 | .rpc_call_prepare = nfs4_open_prepare, | |
1387 | .rpc_call_done = nfs4_open_done, | |
1388 | .rpc_release = nfs4_open_release, | |
1389 | }; | |
1390 | ||
1391 | /* | |
1392 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1393 | */ | |
1394 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1395 | { | |
1396 | struct inode *dir = data->dir->d_inode; | |
1397 | struct nfs_server *server = NFS_SERVER(dir); | |
1398 | struct nfs_openargs *o_arg = &data->o_arg; | |
1399 | struct nfs_openres *o_res = &data->o_res; | |
1400 | struct rpc_task *task; | |
5138fde0 TM |
1401 | struct rpc_message msg = { |
1402 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1403 | .rpc_argp = o_arg, | |
1404 | .rpc_resp = o_res, | |
1405 | .rpc_cred = data->owner->so_cred, | |
1406 | }; | |
c970aa85 TM |
1407 | struct rpc_task_setup task_setup_data = { |
1408 | .rpc_client = server->client, | |
5138fde0 | 1409 | .rpc_message = &msg, |
c970aa85 TM |
1410 | .callback_ops = &nfs4_open_ops, |
1411 | .callback_data = data, | |
101070ca | 1412 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1413 | .flags = RPC_TASK_ASYNC, |
1414 | }; | |
24ac23ab TM |
1415 | int status; |
1416 | ||
c6d00e63 | 1417 | kref_get(&data->kref); |
3e309914 TM |
1418 | data->rpc_done = 0; |
1419 | data->rpc_status = 0; | |
2ced46c2 | 1420 | data->cancelled = 0; |
c970aa85 | 1421 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1422 | if (IS_ERR(task)) |
24ac23ab | 1423 | return PTR_ERR(task); |
24ac23ab TM |
1424 | status = nfs4_wait_for_completion_rpc_task(task); |
1425 | if (status != 0) { | |
1426 | data->cancelled = 1; | |
1427 | smp_wmb(); | |
1428 | } else | |
1429 | status = data->rpc_status; | |
e6b3c4db | 1430 | rpc_put_task(task); |
3e309914 | 1431 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1432 | return status; |
1433 | ||
9936781d TM |
1434 | if (o_res->fh.size == 0) |
1435 | _nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr); | |
1436 | ||
56ae19f3 TM |
1437 | if (o_arg->open_flags & O_CREAT) { |
1438 | update_changeattr(dir, &o_res->cinfo); | |
1439 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1440 | } else | |
1441 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1da177e4 | 1442 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1443 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1444 | if (status != 0) |
24ac23ab | 1445 | return status; |
1da177e4 LT |
1446 | } |
1447 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1448 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1449 | return 0; |
1da177e4 LT |
1450 | } |
1451 | ||
10afec90 | 1452 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
58d9714a | 1453 | { |
7539bbab | 1454 | struct nfs_client *clp = server->nfs_client; |
a78cb57a | 1455 | unsigned int loop; |
6b30954e | 1456 | int ret; |
58d9714a | 1457 | |
a78cb57a | 1458 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1459 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1460 | if (ret != 0) |
a78cb57a | 1461 | break; |
e598d843 TM |
1462 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1463 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1464 | break; |
58d9714a | 1465 | nfs4_schedule_state_recovery(clp); |
a78cb57a | 1466 | ret = -EIO; |
6b30954e | 1467 | } |
a78cb57a | 1468 | return ret; |
58d9714a TM |
1469 | } |
1470 | ||
1da177e4 LT |
1471 | /* |
1472 | * OPEN_EXPIRED: | |
1473 | * reclaim state on the server after a network partition. | |
1474 | * Assumes caller holds the appropriate lock | |
1475 | */ | |
539cd03a | 1476 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1477 | { |
e56e0b78 | 1478 | struct nfs4_opendata *opendata; |
864472e9 | 1479 | int ret; |
1da177e4 | 1480 | |
6f220ed5 TM |
1481 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1482 | if (IS_ERR(opendata)) | |
1483 | return PTR_ERR(opendata); | |
864472e9 | 1484 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1485 | if (ret == -ESTALE) |
539cd03a | 1486 | d_drop(ctx->path.dentry); |
c6d00e63 | 1487 | nfs4_opendata_put(opendata); |
864472e9 | 1488 | return ret; |
1da177e4 LT |
1489 | } |
1490 | ||
539cd03a | 1491 | static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1492 | { |
539cd03a | 1493 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1494 | struct nfs4_exception exception = { }; |
1495 | int err; | |
1496 | ||
1497 | do { | |
539cd03a | 1498 | err = _nfs4_open_expired(ctx, state); |
027b6ca0 TM |
1499 | if (err != -NFS4ERR_DELAY) |
1500 | break; | |
1501 | nfs4_handle_exception(server, err, &exception); | |
202b50dc TM |
1502 | } while (exception.retry); |
1503 | return err; | |
1504 | } | |
1505 | ||
1da177e4 LT |
1506 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1507 | { | |
1da177e4 | 1508 | struct nfs_open_context *ctx; |
864472e9 | 1509 | int ret; |
1da177e4 | 1510 | |
864472e9 TM |
1511 | ctx = nfs4_state_find_open_context(state); |
1512 | if (IS_ERR(ctx)) | |
1513 | return PTR_ERR(ctx); | |
539cd03a | 1514 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1515 | put_nfs_open_context(ctx); |
1516 | return ret; | |
1da177e4 LT |
1517 | } |
1518 | ||
aa53ed54 JL |
1519 | /* |
1520 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1521 | * fields corresponding to attributes that were used to store the verifier. | |
1522 | * Make sure we clobber those fields in the later setattr call | |
1523 | */ | |
1524 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1525 | { | |
1526 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1527 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1528 | sattr->ia_valid |= ATTR_ATIME; | |
1529 | ||
1530 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1531 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1532 | sattr->ia_valid |= ATTR_MTIME; | |
1533 | } | |
1534 | ||
1da177e4 | 1535 | /* |
24ac23ab | 1536 | * Returns a referenced nfs4_state |
1da177e4 | 1537 | */ |
dc0b027d | 1538 | static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res) |
1da177e4 LT |
1539 | { |
1540 | struct nfs4_state_owner *sp; | |
1541 | struct nfs4_state *state = NULL; | |
1542 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1543 | struct nfs4_opendata *opendata; |
aac00a8d | 1544 | int status; |
1da177e4 LT |
1545 | |
1546 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1547 | status = -ENOMEM; |
1548 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1549 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1550 | goto out_err; | |
1551 | } | |
58d9714a TM |
1552 | status = nfs4_recover_expired_lease(server); |
1553 | if (status != 0) | |
b4454fe1 | 1554 | goto err_put_state_owner; |
aac00a8d | 1555 | if (path->dentry->d_inode != NULL) |
dc0b027d | 1556 | nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode); |
58d9714a | 1557 | status = -ENOMEM; |
dc0b027d | 1558 | opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr); |
e56e0b78 | 1559 | if (opendata == NULL) |
95d35cb4 | 1560 | goto err_put_state_owner; |
1da177e4 | 1561 | |
aac00a8d TM |
1562 | if (path->dentry->d_inode != NULL) |
1563 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1564 | ||
24ac23ab | 1565 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1566 | if (status != 0) |
c6d00e63 | 1567 | goto err_opendata_put; |
1da177e4 | 1568 | |
aa53ed54 JL |
1569 | if (opendata->o_arg.open_flags & O_EXCL) |
1570 | nfs4_exclusive_attrset(opendata, sattr); | |
1571 | ||
24ac23ab | 1572 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1573 | status = PTR_ERR(state); |
1574 | if (IS_ERR(state)) | |
c6d00e63 | 1575 | goto err_opendata_put; |
c6d00e63 | 1576 | nfs4_opendata_put(opendata); |
1da177e4 | 1577 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1578 | *res = state; |
1579 | return 0; | |
c6d00e63 TM |
1580 | err_opendata_put: |
1581 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1582 | err_put_state_owner: |
1583 | nfs4_put_state_owner(sp); | |
1da177e4 | 1584 | out_err: |
1da177e4 LT |
1585 | *res = NULL; |
1586 | return status; | |
1587 | } | |
1588 | ||
1589 | ||
dc0b027d | 1590 | static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred) |
1da177e4 LT |
1591 | { |
1592 | struct nfs4_exception exception = { }; | |
1593 | struct nfs4_state *res; | |
1594 | int status; | |
1595 | ||
1596 | do { | |
dc0b027d | 1597 | status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1598 | if (status == 0) |
1599 | break; | |
1600 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1601 | * book-keeping w.r.t. state-changing operations | |
1602 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1603 | * It is actually a sign of a bug on the client or on the server. | |
1604 | * | |
1605 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1606 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1607 | * have unhashed the old state_owner for us, and that we can |
1608 | * therefore safely retry using a new one. We should still warn | |
1609 | * the user though... | |
1610 | */ | |
1611 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1612 | printk(KERN_WARNING "NFS: v4 server %s " |
1613 | " returned a bad sequence-id error!\n", | |
1614 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1615 | exception.retry = 1; |
1616 | continue; | |
1617 | } | |
550f5747 TM |
1618 | /* |
1619 | * BAD_STATEID on OPEN means that the server cancelled our | |
1620 | * state before it received the OPEN_CONFIRM. | |
1621 | * Recover by retrying the request as per the discussion | |
1622 | * on Page 181 of RFC3530. | |
1623 | */ | |
1624 | if (status == -NFS4ERR_BAD_STATEID) { | |
1625 | exception.retry = 1; | |
1626 | continue; | |
1627 | } | |
aac00a8d TM |
1628 | if (status == -EAGAIN) { |
1629 | /* We must have found a delegation */ | |
1630 | exception.retry = 1; | |
1631 | continue; | |
1632 | } | |
1da177e4 LT |
1633 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1634 | status, &exception)); | |
1635 | } while (exception.retry); | |
1636 | return res; | |
1637 | } | |
1638 | ||
659bfcd6 TM |
1639 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1640 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1641 | struct nfs4_state *state) | |
1da177e4 | 1642 | { |
3e4f6290 | 1643 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1644 | struct nfs_setattrargs arg = { |
3e4f6290 | 1645 | .fh = NFS_FH(inode), |
1da177e4 LT |
1646 | .iap = sattr, |
1647 | .server = server, | |
1648 | .bitmask = server->attr_bitmask, | |
1649 | }; | |
1650 | struct nfs_setattrres res = { | |
1651 | .fattr = fattr, | |
1652 | .server = server, | |
1653 | }; | |
1654 | struct rpc_message msg = { | |
659bfcd6 TM |
1655 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1656 | .rpc_argp = &arg, | |
1657 | .rpc_resp = &res, | |
1658 | .rpc_cred = cred, | |
1da177e4 | 1659 | }; |
26e976a8 | 1660 | unsigned long timestamp = jiffies; |
65e4308d | 1661 | int status; |
1da177e4 | 1662 | |
0e574af1 | 1663 | nfs_fattr_init(fattr); |
1da177e4 | 1664 | |
3e4f6290 TM |
1665 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1666 | /* Use that stateid */ | |
1667 | } else if (state != NULL) { | |
08e9eac4 TM |
1668 | nfs4_copy_stateid(&arg.stateid, state, current->files); |
1669 | } else | |
1da177e4 LT |
1670 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1671 | ||
cccef3b9 | 1672 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
26e976a8 TM |
1673 | if (status == 0 && state != NULL) |
1674 | renew_lease(server, timestamp); | |
65e4308d | 1675 | return status; |
1da177e4 LT |
1676 | } |
1677 | ||
659bfcd6 TM |
1678 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1679 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1680 | struct nfs4_state *state) | |
1da177e4 | 1681 | { |
3e4f6290 | 1682 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1683 | struct nfs4_exception exception = { }; |
1684 | int err; | |
1685 | do { | |
1686 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1687 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1688 | &exception); |
1689 | } while (exception.retry); | |
1690 | return err; | |
1691 | } | |
1692 | ||
1693 | struct nfs4_closedata { | |
4a35bd41 | 1694 | struct path path; |
1da177e4 LT |
1695 | struct inode *inode; |
1696 | struct nfs4_state *state; | |
1697 | struct nfs_closeargs arg; | |
1698 | struct nfs_closeres res; | |
516a6af6 | 1699 | struct nfs_fattr fattr; |
26e976a8 | 1700 | unsigned long timestamp; |
1da177e4 LT |
1701 | }; |
1702 | ||
963d8fe5 | 1703 | static void nfs4_free_closedata(void *data) |
9512135d | 1704 | { |
963d8fe5 TM |
1705 | struct nfs4_closedata *calldata = data; |
1706 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d TM |
1707 | |
1708 | nfs4_put_open_state(calldata->state); | |
1709 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1710 | nfs4_put_state_owner(sp); |
31f31db1 | 1711 | path_put(&calldata->path); |
9512135d TM |
1712 | kfree(calldata); |
1713 | } | |
1714 | ||
963d8fe5 | 1715 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1716 | { |
963d8fe5 | 1717 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1718 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1719 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1720 | ||
19ddab06 | 1721 | nfs4_sequence_done(server, &calldata->res.seq_res, task->tk_status); |
4ce70ada TM |
1722 | if (RPC_ASSASSINATED(task)) |
1723 | return; | |
1da177e4 LT |
1724 | /* hmm. we are done with the inode, and in the process of freeing |
1725 | * the state_owner. we keep this around to process errors | |
1726 | */ | |
1da177e4 LT |
1727 | switch (task->tk_status) { |
1728 | case 0: | |
45328c35 | 1729 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1730 | renew_lease(server, calldata->timestamp); |
1da177e4 LT |
1731 | break; |
1732 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1733 | case -NFS4ERR_OLD_STATEID: |
1734 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1735 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1736 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1737 | break; |
1da177e4 | 1738 | default: |
9e33bed5 | 1739 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) { |
eedc020e | 1740 | nfs4_restart_rpc(task, server->nfs_client); |
1da177e4 LT |
1741 | return; |
1742 | } | |
1743 | } | |
19ddab06 | 1744 | nfs4_sequence_free_slot(server->nfs_client, &calldata->res.seq_res); |
516a6af6 | 1745 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1746 | } |
1747 | ||
4ce70ada | 1748 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1749 | { |
4ce70ada | 1750 | struct nfs4_closedata *calldata = data; |
9512135d | 1751 | struct nfs4_state *state = calldata->state; |
003707c7 | 1752 | int clear_rd, clear_wr, clear_rdwr; |
9512135d | 1753 | |
963d8fe5 | 1754 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1755 | return; |
003707c7 | 1756 | |
003707c7 | 1757 | clear_rd = clear_wr = clear_rdwr = 0; |
4cecb76f | 1758 | spin_lock(&state->owner->so_lock); |
003707c7 | 1759 | /* Calculate the change in open mode */ |
e7616923 | 1760 | if (state->n_rdwr == 0) { |
003707c7 | 1761 | if (state->n_rdonly == 0) { |
003707c7 TM |
1762 | clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
1763 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1764 | } | |
1765 | if (state->n_wronly == 0) { | |
003707c7 TM |
1766 | clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
1767 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1768 | } | |
e7616923 | 1769 | } |
4cecb76f | 1770 | spin_unlock(&state->owner->so_lock); |
003707c7 | 1771 | if (!clear_rd && !clear_wr && !clear_rdwr) { |
963d8fe5 TM |
1772 | /* Note: exit _without_ calling nfs4_close_done */ |
1773 | task->tk_action = NULL; | |
9512135d TM |
1774 | return; |
1775 | } | |
516a6af6 | 1776 | nfs_fattr_init(calldata->res.fattr); |
45328c35 | 1777 | if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) { |
5138fde0 | 1778 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
dc0b027d | 1779 | calldata->arg.fmode = FMODE_READ; |
45328c35 | 1780 | } else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) { |
5138fde0 | 1781 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
dc0b027d | 1782 | calldata->arg.fmode = FMODE_WRITE; |
45328c35 | 1783 | } |
26e976a8 | 1784 | calldata->timestamp = jiffies; |
19ddab06 AA |
1785 | if (nfs4_setup_sequence((NFS_SERVER(calldata->inode))->nfs_client, |
1786 | &calldata->arg.seq_args, &calldata->res.seq_res, | |
1787 | 1, task)) | |
1788 | return; | |
5138fde0 | 1789 | rpc_call_start(task); |
1da177e4 LT |
1790 | } |
1791 | ||
963d8fe5 | 1792 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1793 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1794 | .rpc_call_done = nfs4_close_done, |
1795 | .rpc_release = nfs4_free_closedata, | |
1796 | }; | |
1797 | ||
1da177e4 LT |
1798 | /* |
1799 | * It is possible for data to be read/written from a mem-mapped file | |
1800 | * after the sys_close call (which hits the vfs layer as a flush). | |
1801 | * This means that we can't safely call nfsv4 close on a file until | |
1802 | * the inode is cleared. This in turn means that we are not good | |
1803 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1804 | * share state even when we are done with one of the three share | |
1805 | * stateid's in the inode. | |
1806 | * | |
1807 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1808 | */ | |
a49c3c77 | 1809 | int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait) |
1da177e4 | 1810 | { |
4a35bd41 | 1811 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 1812 | struct nfs4_closedata *calldata; |
b39e625b TM |
1813 | struct nfs4_state_owner *sp = state->owner; |
1814 | struct rpc_task *task; | |
5138fde0 TM |
1815 | struct rpc_message msg = { |
1816 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
1817 | .rpc_cred = state->owner->so_cred, | |
1818 | }; | |
c970aa85 TM |
1819 | struct rpc_task_setup task_setup_data = { |
1820 | .rpc_client = server->client, | |
5138fde0 | 1821 | .rpc_message = &msg, |
c970aa85 | 1822 | .callback_ops = &nfs4_close_ops, |
101070ca | 1823 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1824 | .flags = RPC_TASK_ASYNC, |
1825 | }; | |
9512135d | 1826 | int status = -ENOMEM; |
1da177e4 | 1827 | |
19ddab06 | 1828 | calldata = kzalloc(sizeof(*calldata), GFP_KERNEL); |
1da177e4 | 1829 | if (calldata == NULL) |
9512135d | 1830 | goto out; |
4a35bd41 | 1831 | calldata->inode = state->inode; |
1da177e4 | 1832 | calldata->state = state; |
4a35bd41 | 1833 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 1834 | calldata->arg.stateid = &state->open_stateid; |
34dc1ad7 BH |
1835 | if (nfs4_has_session(server->nfs_client)) |
1836 | memset(calldata->arg.stateid->data, 0, 4); /* clear seqid */ | |
1da177e4 | 1837 | /* Serialization for the sequence id */ |
cee54fc9 | 1838 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid); |
9512135d TM |
1839 | if (calldata->arg.seqid == NULL) |
1840 | goto out_free_calldata; | |
dc0b027d | 1841 | calldata->arg.fmode = 0; |
a65318bf | 1842 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 1843 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 1844 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 1845 | calldata->res.server = server; |
5f7dbd5c | 1846 | calldata->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
4a35bd41 TM |
1847 | calldata->path.mnt = mntget(path->mnt); |
1848 | calldata->path.dentry = dget(path->dentry); | |
9512135d | 1849 | |
5138fde0 TM |
1850 | msg.rpc_argp = &calldata->arg, |
1851 | msg.rpc_resp = &calldata->res, | |
c970aa85 TM |
1852 | task_setup_data.callback_data = calldata; |
1853 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
1854 | if (IS_ERR(task)) |
1855 | return PTR_ERR(task); | |
a49c3c77 TM |
1856 | status = 0; |
1857 | if (wait) | |
1858 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 1859 | rpc_put_task(task); |
a49c3c77 | 1860 | return status; |
9512135d TM |
1861 | out_free_calldata: |
1862 | kfree(calldata); | |
1863 | out: | |
b39e625b TM |
1864 | nfs4_put_open_state(state); |
1865 | nfs4_put_state_owner(sp); | |
9512135d | 1866 | return status; |
1da177e4 LT |
1867 | } |
1868 | ||
dc0b027d | 1869 | static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode) |
02a913a7 TM |
1870 | { |
1871 | struct file *filp; | |
1b45c46c | 1872 | int ret; |
02a913a7 | 1873 | |
1b45c46c | 1874 | /* If the open_intent is for execute, we have an extra check to make */ |
dc0b027d | 1875 | if (fmode & FMODE_EXEC) { |
af22f94a | 1876 | ret = nfs_may_open(state->inode, |
1b45c46c TM |
1877 | state->owner->so_cred, |
1878 | nd->intent.open.flags); | |
1879 | if (ret < 0) | |
1880 | goto out_close; | |
1881 | } | |
4a35bd41 | 1882 | filp = lookup_instantiate_filp(nd, path->dentry, NULL); |
02a913a7 TM |
1883 | if (!IS_ERR(filp)) { |
1884 | struct nfs_open_context *ctx; | |
cd3758e3 | 1885 | ctx = nfs_file_open_context(filp); |
02a913a7 | 1886 | ctx->state = state; |
95cf959b TM |
1887 | return 0; |
1888 | } | |
1b45c46c TM |
1889 | ret = PTR_ERR(filp); |
1890 | out_close: | |
dc0b027d | 1891 | nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE)); |
1b45c46c | 1892 | return ret; |
02a913a7 TM |
1893 | } |
1894 | ||
1895 | struct dentry * | |
1da177e4 LT |
1896 | nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd) |
1897 | { | |
ad389da7 | 1898 | struct path path = { |
4ac91378 | 1899 | .mnt = nd->path.mnt, |
ad389da7 TM |
1900 | .dentry = dentry, |
1901 | }; | |
4ac91378 | 1902 | struct dentry *parent; |
1da177e4 LT |
1903 | struct iattr attr; |
1904 | struct rpc_cred *cred; | |
1905 | struct nfs4_state *state; | |
02a913a7 | 1906 | struct dentry *res; |
dc0b027d | 1907 | fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC); |
1da177e4 LT |
1908 | |
1909 | if (nd->flags & LOOKUP_CREATE) { | |
1910 | attr.ia_mode = nd->intent.open.create_mode; | |
1911 | attr.ia_valid = ATTR_MODE; | |
1912 | if (!IS_POSIXACL(dir)) | |
ce3b0f8d | 1913 | attr.ia_mode &= ~current_umask(); |
1da177e4 LT |
1914 | } else { |
1915 | attr.ia_valid = 0; | |
1916 | BUG_ON(nd->intent.open.flags & O_CREAT); | |
1917 | } | |
1918 | ||
98a8e323 | 1919 | cred = rpc_lookup_cred(); |
1da177e4 | 1920 | if (IS_ERR(cred)) |
02a913a7 | 1921 | return (struct dentry *)cred; |
565277f6 TM |
1922 | parent = dentry->d_parent; |
1923 | /* Protect against concurrent sillydeletes */ | |
1924 | nfs_block_sillyrename(parent); | |
dc0b027d | 1925 | state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred); |
1da177e4 | 1926 | put_rpccred(cred); |
02a913a7 | 1927 | if (IS_ERR(state)) { |
d75340cc | 1928 | if (PTR_ERR(state) == -ENOENT) { |
02a913a7 | 1929 | d_add(dentry, NULL); |
d75340cc TM |
1930 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1931 | } | |
565277f6 | 1932 | nfs_unblock_sillyrename(parent); |
02a913a7 TM |
1933 | return (struct dentry *)state; |
1934 | } | |
24ac23ab | 1935 | res = d_add_unique(dentry, igrab(state->inode)); |
02a913a7 | 1936 | if (res != NULL) |
deee9369 | 1937 | path.dentry = res; |
d75340cc | 1938 | nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir)); |
565277f6 | 1939 | nfs_unblock_sillyrename(parent); |
dc0b027d | 1940 | nfs4_intent_set_file(nd, &path, state, fmode); |
02a913a7 | 1941 | return res; |
1da177e4 LT |
1942 | } |
1943 | ||
1944 | int | |
02a913a7 | 1945 | nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, struct nameidata *nd) |
1da177e4 | 1946 | { |
ad389da7 | 1947 | struct path path = { |
4ac91378 | 1948 | .mnt = nd->path.mnt, |
ad389da7 TM |
1949 | .dentry = dentry, |
1950 | }; | |
1da177e4 LT |
1951 | struct rpc_cred *cred; |
1952 | struct nfs4_state *state; | |
dc0b027d | 1953 | fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE); |
1da177e4 | 1954 | |
98a8e323 | 1955 | cred = rpc_lookup_cred(); |
1da177e4 LT |
1956 | if (IS_ERR(cred)) |
1957 | return PTR_ERR(cred); | |
dc0b027d | 1958 | state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred); |
1da177e4 | 1959 | put_rpccred(cred); |
02a913a7 TM |
1960 | if (IS_ERR(state)) { |
1961 | switch (PTR_ERR(state)) { | |
1962 | case -EPERM: | |
1963 | case -EACCES: | |
1964 | case -EDQUOT: | |
1965 | case -ENOSPC: | |
1966 | case -EROFS: | |
1967 | lookup_instantiate_filp(nd, (struct dentry *)state, NULL); | |
1968 | return 1; | |
b87c0adf CL |
1969 | default: |
1970 | goto out_drop; | |
02a913a7 | 1971 | } |
02a913a7 | 1972 | } |
24ac23ab | 1973 | if (state->inode == dentry->d_inode) { |
d75340cc | 1974 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
dc0b027d | 1975 | nfs4_intent_set_file(nd, &path, state, fmode); |
1da177e4 LT |
1976 | return 1; |
1977 | } | |
dc0b027d | 1978 | nfs4_close_sync(&path, state, fmode); |
02a913a7 TM |
1979 | out_drop: |
1980 | d_drop(dentry); | |
1da177e4 LT |
1981 | return 0; |
1982 | } | |
1983 | ||
7fe5c398 TM |
1984 | void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
1985 | { | |
1986 | if (ctx->state == NULL) | |
1987 | return; | |
1988 | if (is_sync) | |
1989 | nfs4_close_sync(&ctx->path, ctx->state, ctx->mode); | |
1990 | else | |
1991 | nfs4_close_state(&ctx->path, ctx->state, ctx->mode); | |
1992 | } | |
1da177e4 LT |
1993 | |
1994 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
1995 | { | |
43652ad5 BH |
1996 | struct nfs4_server_caps_arg args = { |
1997 | .fhandle = fhandle, | |
1998 | }; | |
1da177e4 LT |
1999 | struct nfs4_server_caps_res res = {}; |
2000 | struct rpc_message msg = { | |
2001 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2002 | .rpc_argp = &args, |
1da177e4 LT |
2003 | .rpc_resp = &res, |
2004 | }; | |
2005 | int status; | |
2006 | ||
cccef3b9 | 2007 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2008 | if (status == 0) { |
2009 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2010 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2011 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2012 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2013 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2014 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2015 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2016 | server->caps |= NFS_CAP_ACLS; | |
2017 | if (res.has_links != 0) | |
2018 | server->caps |= NFS_CAP_HARDLINKS; | |
2019 | if (res.has_symlinks != 0) | |
2020 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2021 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2022 | server->caps |= NFS_CAP_FILEID; | |
2023 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2024 | server->caps |= NFS_CAP_MODE; | |
2025 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2026 | server->caps |= NFS_CAP_NLINK; | |
2027 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2028 | server->caps |= NFS_CAP_OWNER; | |
2029 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2030 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2031 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2032 | server->caps |= NFS_CAP_ATIME; | |
2033 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2034 | server->caps |= NFS_CAP_CTIME; | |
2035 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2036 | server->caps |= NFS_CAP_MTIME; | |
2037 | ||
a65318bf TM |
2038 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2039 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2040 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2041 | server->acl_bitmask = res.acl_bitmask; |
2042 | } | |
cccef3b9 | 2043 | |
1da177e4 LT |
2044 | return status; |
2045 | } | |
2046 | ||
55a97593 | 2047 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2048 | { |
2049 | struct nfs4_exception exception = { }; | |
2050 | int err; | |
2051 | do { | |
2052 | err = nfs4_handle_exception(server, | |
2053 | _nfs4_server_capabilities(server, fhandle), | |
2054 | &exception); | |
2055 | } while (exception.retry); | |
2056 | return err; | |
2057 | } | |
2058 | ||
2059 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2060 | struct nfs_fsinfo *info) | |
2061 | { | |
1da177e4 LT |
2062 | struct nfs4_lookup_root_arg args = { |
2063 | .bitmask = nfs4_fattr_bitmap, | |
2064 | }; | |
2065 | struct nfs4_lookup_res res = { | |
2066 | .server = server, | |
0e574af1 | 2067 | .fattr = info->fattr, |
1da177e4 LT |
2068 | .fh = fhandle, |
2069 | }; | |
2070 | struct rpc_message msg = { | |
2071 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2072 | .rpc_argp = &args, | |
2073 | .rpc_resp = &res, | |
2074 | }; | |
008f55d0 | 2075 | |
0e574af1 | 2076 | nfs_fattr_init(info->fattr); |
fccba804 | 2077 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2078 | } |
2079 | ||
2080 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2081 | struct nfs_fsinfo *info) | |
2082 | { | |
2083 | struct nfs4_exception exception = { }; | |
2084 | int err; | |
2085 | do { | |
2086 | err = nfs4_handle_exception(server, | |
2087 | _nfs4_lookup_root(server, fhandle, info), | |
2088 | &exception); | |
2089 | } while (exception.retry); | |
2090 | return err; | |
2091 | } | |
2092 | ||
54ceac45 DH |
2093 | /* |
2094 | * get the file handle for the "/" directory on the server | |
2095 | */ | |
1da177e4 | 2096 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2097 | struct nfs_fsinfo *info) |
1da177e4 | 2098 | { |
1da177e4 LT |
2099 | int status; |
2100 | ||
1da177e4 | 2101 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
2102 | if (status == 0) |
2103 | status = nfs4_server_capabilities(server, fhandle); | |
2104 | if (status == 0) | |
2105 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2106 | return nfs4_map_errors(status); |
1da177e4 LT |
2107 | } |
2108 | ||
6b97fd3d MN |
2109 | /* |
2110 | * Get locations and (maybe) other attributes of a referral. | |
2111 | * Note that we'll actually follow the referral later when | |
2112 | * we detect fsid mismatch in inode revalidation | |
2113 | */ | |
56659e99 | 2114 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
2115 | { |
2116 | int status = -ENOMEM; | |
2117 | struct page *page = NULL; | |
2118 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2119 | |
2120 | page = alloc_page(GFP_KERNEL); | |
2121 | if (page == NULL) | |
2122 | goto out; | |
2123 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2124 | if (locations == NULL) | |
2125 | goto out; | |
2126 | ||
c228fd3a | 2127 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2128 | if (status != 0) |
2129 | goto out; | |
2130 | /* Make sure server returned a different fsid for the referral */ | |
2131 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
3110ff80 | 2132 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name); |
6b97fd3d MN |
2133 | status = -EIO; |
2134 | goto out; | |
2135 | } | |
2136 | ||
2137 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
2138 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
2139 | if (!fattr->mode) | |
2140 | fattr->mode = S_IFDIR; | |
2141 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
2142 | out: | |
2143 | if (page) | |
2144 | __free_page(page); | |
2145 | if (locations) | |
2146 | kfree(locations); | |
2147 | return status; | |
2148 | } | |
2149 | ||
1da177e4 LT |
2150 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2151 | { | |
2152 | struct nfs4_getattr_arg args = { | |
2153 | .fh = fhandle, | |
2154 | .bitmask = server->attr_bitmask, | |
2155 | }; | |
2156 | struct nfs4_getattr_res res = { | |
2157 | .fattr = fattr, | |
2158 | .server = server, | |
2159 | }; | |
2160 | struct rpc_message msg = { | |
2161 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2162 | .rpc_argp = &args, | |
2163 | .rpc_resp = &res, | |
2164 | }; | |
2165 | ||
0e574af1 | 2166 | nfs_fattr_init(fattr); |
cccef3b9 | 2167 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2168 | } |
2169 | ||
2170 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2171 | { | |
2172 | struct nfs4_exception exception = { }; | |
2173 | int err; | |
2174 | do { | |
2175 | err = nfs4_handle_exception(server, | |
2176 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2177 | &exception); | |
2178 | } while (exception.retry); | |
2179 | return err; | |
2180 | } | |
2181 | ||
2182 | /* | |
2183 | * The file is not closed if it is opened due to the a request to change | |
2184 | * the size of the file. The open call will not be needed once the | |
2185 | * VFS layer lookup-intents are implemented. | |
2186 | * | |
2187 | * Close is called when the inode is destroyed. | |
2188 | * If we haven't opened the file for O_WRONLY, we | |
2189 | * need to in the size_change case to obtain a stateid. | |
2190 | * | |
2191 | * Got race? | |
2192 | * Because OPEN is always done by name in nfsv4, it is | |
2193 | * possible that we opened a different file by the same | |
2194 | * name. We can recognize this race condition, but we | |
2195 | * can't do anything about it besides returning an error. | |
2196 | * | |
2197 | * This will be fixed with VFS changes (lookup-intent). | |
2198 | */ | |
2199 | static int | |
2200 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2201 | struct iattr *sattr) | |
2202 | { | |
08e9eac4 | 2203 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2204 | struct rpc_cred *cred = NULL; |
d530838b | 2205 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2206 | int status; |
2207 | ||
0e574af1 | 2208 | nfs_fattr_init(fattr); |
1da177e4 | 2209 | |
d530838b | 2210 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2211 | if (sattr->ia_valid & ATTR_FILE) { |
2212 | struct nfs_open_context *ctx; | |
2213 | ||
2214 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2215 | if (ctx) { |
2216 | cred = ctx->cred; | |
2217 | state = ctx->state; | |
2218 | } | |
659bfcd6 | 2219 | } |
08e9eac4 | 2220 | |
659bfcd6 | 2221 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2222 | if (status == 0) |
2223 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2224 | return status; |
2225 | } | |
2226 | ||
56659e99 TM |
2227 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
2228 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
2229 | struct nfs_fattr *fattr) |
2230 | { | |
2231 | int status; | |
2232 | struct nfs4_lookup_arg args = { | |
2233 | .bitmask = server->attr_bitmask, | |
2234 | .dir_fh = dirfh, | |
2235 | .name = name, | |
2236 | }; | |
2237 | struct nfs4_lookup_res res = { | |
2238 | .server = server, | |
2239 | .fattr = fattr, | |
2240 | .fh = fhandle, | |
2241 | }; | |
2242 | struct rpc_message msg = { | |
2243 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2244 | .rpc_argp = &args, | |
2245 | .rpc_resp = &res, | |
2246 | }; | |
2247 | ||
2248 | nfs_fattr_init(fattr); | |
2249 | ||
2250 | dprintk("NFS call lookupfh %s\n", name->name); | |
cccef3b9 | 2251 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
2b3de441 | 2252 | dprintk("NFS reply lookupfh: %d\n", status); |
2b3de441 DH |
2253 | return status; |
2254 | } | |
2255 | ||
2256 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
2257 | struct qstr *name, struct nfs_fh *fhandle, | |
2258 | struct nfs_fattr *fattr) | |
2259 | { | |
2260 | struct nfs4_exception exception = { }; | |
2261 | int err; | |
2262 | do { | |
4e56e082 TM |
2263 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
2264 | /* FIXME: !!!! */ | |
2265 | if (err == -NFS4ERR_MOVED) { | |
2266 | err = -EREMOTE; | |
2267 | break; | |
2268 | } | |
2269 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
2270 | } while (exception.retry); |
2271 | return err; | |
2272 | } | |
2273 | ||
56659e99 | 2274 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
2275 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2276 | { | |
4e56e082 | 2277 | int status; |
1da177e4 LT |
2278 | |
2279 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 2280 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
2281 | if (status == -NFS4ERR_MOVED) |
2282 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
2283 | dprintk("NFS reply lookup: %d\n", status); |
2284 | return status; | |
2285 | } | |
2286 | ||
2287 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2288 | { | |
2289 | struct nfs4_exception exception = { }; | |
2290 | int err; | |
2291 | do { | |
2292 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2293 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
2294 | &exception); | |
2295 | } while (exception.retry); | |
2296 | return err; | |
2297 | } | |
2298 | ||
2299 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2300 | { | |
76b32999 TM |
2301 | struct nfs_server *server = NFS_SERVER(inode); |
2302 | struct nfs_fattr fattr; | |
1da177e4 LT |
2303 | struct nfs4_accessargs args = { |
2304 | .fh = NFS_FH(inode), | |
76b32999 TM |
2305 | .bitmask = server->attr_bitmask, |
2306 | }; | |
2307 | struct nfs4_accessres res = { | |
2308 | .server = server, | |
2309 | .fattr = &fattr, | |
1da177e4 | 2310 | }; |
1da177e4 LT |
2311 | struct rpc_message msg = { |
2312 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2313 | .rpc_argp = &args, | |
2314 | .rpc_resp = &res, | |
2315 | .rpc_cred = entry->cred, | |
2316 | }; | |
2317 | int mode = entry->mask; | |
2318 | int status; | |
2319 | ||
2320 | /* | |
2321 | * Determine which access bits we want to ask for... | |
2322 | */ | |
2323 | if (mode & MAY_READ) | |
2324 | args.access |= NFS4_ACCESS_READ; | |
2325 | if (S_ISDIR(inode->i_mode)) { | |
2326 | if (mode & MAY_WRITE) | |
2327 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2328 | if (mode & MAY_EXEC) | |
2329 | args.access |= NFS4_ACCESS_LOOKUP; | |
2330 | } else { | |
2331 | if (mode & MAY_WRITE) | |
2332 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2333 | if (mode & MAY_EXEC) | |
2334 | args.access |= NFS4_ACCESS_EXECUTE; | |
2335 | } | |
76b32999 | 2336 | nfs_fattr_init(&fattr); |
cccef3b9 | 2337 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2338 | if (!status) { |
2339 | entry->mask = 0; | |
2340 | if (res.access & NFS4_ACCESS_READ) | |
2341 | entry->mask |= MAY_READ; | |
2342 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2343 | entry->mask |= MAY_WRITE; | |
2344 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2345 | entry->mask |= MAY_EXEC; | |
76b32999 | 2346 | nfs_refresh_inode(inode, &fattr); |
1da177e4 LT |
2347 | } |
2348 | return status; | |
2349 | } | |
2350 | ||
2351 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2352 | { | |
2353 | struct nfs4_exception exception = { }; | |
2354 | int err; | |
2355 | do { | |
2356 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2357 | _nfs4_proc_access(inode, entry), | |
2358 | &exception); | |
2359 | } while (exception.retry); | |
2360 | return err; | |
2361 | } | |
2362 | ||
2363 | /* | |
2364 | * TODO: For the time being, we don't try to get any attributes | |
2365 | * along with any of the zero-copy operations READ, READDIR, | |
2366 | * READLINK, WRITE. | |
2367 | * | |
2368 | * In the case of the first three, we want to put the GETATTR | |
2369 | * after the read-type operation -- this is because it is hard | |
2370 | * to predict the length of a GETATTR response in v4, and thus | |
2371 | * align the READ data correctly. This means that the GETATTR | |
2372 | * may end up partially falling into the page cache, and we should | |
2373 | * shift it into the 'tail' of the xdr_buf before processing. | |
2374 | * To do this efficiently, we need to know the total length | |
2375 | * of data received, which doesn't seem to be available outside | |
2376 | * of the RPC layer. | |
2377 | * | |
2378 | * In the case of WRITE, we also want to put the GETATTR after | |
2379 | * the operation -- in this case because we want to make sure | |
2380 | * we get the post-operation mtime and size. This means that | |
2381 | * we can't use xdr_encode_pages() as written: we need a variant | |
2382 | * of it which would leave room in the 'tail' iovec. | |
2383 | * | |
2384 | * Both of these changes to the XDR layer would in fact be quite | |
2385 | * minor, but I decided to leave them for a subsequent patch. | |
2386 | */ | |
2387 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2388 | unsigned int pgbase, unsigned int pglen) | |
2389 | { | |
2390 | struct nfs4_readlink args = { | |
2391 | .fh = NFS_FH(inode), | |
2392 | .pgbase = pgbase, | |
2393 | .pglen = pglen, | |
2394 | .pages = &page, | |
2395 | }; | |
f50c7000 | 2396 | struct nfs4_readlink_res res; |
1da177e4 LT |
2397 | struct rpc_message msg = { |
2398 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2399 | .rpc_argp = &args, | |
f50c7000 | 2400 | .rpc_resp = &res, |
1da177e4 LT |
2401 | }; |
2402 | ||
cccef3b9 | 2403 | return nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
1da177e4 LT |
2404 | } |
2405 | ||
2406 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2407 | unsigned int pgbase, unsigned int pglen) | |
2408 | { | |
2409 | struct nfs4_exception exception = { }; | |
2410 | int err; | |
2411 | do { | |
2412 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2413 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2414 | &exception); | |
2415 | } while (exception.retry); | |
2416 | return err; | |
2417 | } | |
2418 | ||
1da177e4 LT |
2419 | /* |
2420 | * Got race? | |
2421 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2422 | * Until then, this create/open method is prone to inefficiency and race | |
2423 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2424 | * placed on the wire. | |
2425 | * | |
2426 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2427 | * The file will be opened again in the subsequent VFS open call | |
2428 | * (nfs4_proc_file_open). | |
2429 | * | |
2430 | * The open for read will just hang around to be used by any process that | |
2431 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2432 | */ | |
2433 | ||
2434 | static int | |
2435 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 2436 | int flags, struct nameidata *nd) |
1da177e4 | 2437 | { |
ad389da7 | 2438 | struct path path = { |
4ac91378 | 2439 | .mnt = nd->path.mnt, |
ad389da7 TM |
2440 | .dentry = dentry, |
2441 | }; | |
1da177e4 LT |
2442 | struct nfs4_state *state; |
2443 | struct rpc_cred *cred; | |
dc0b027d | 2444 | fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE); |
1da177e4 LT |
2445 | int status = 0; |
2446 | ||
98a8e323 | 2447 | cred = rpc_lookup_cred(); |
1da177e4 LT |
2448 | if (IS_ERR(cred)) { |
2449 | status = PTR_ERR(cred); | |
2450 | goto out; | |
2451 | } | |
dc0b027d | 2452 | state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred); |
d4d9cdcb | 2453 | d_drop(dentry); |
1da177e4 LT |
2454 | if (IS_ERR(state)) { |
2455 | status = PTR_ERR(state); | |
659bfcd6 | 2456 | goto out_putcred; |
1da177e4 | 2457 | } |
d4d9cdcb | 2458 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2459 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1da177e4 LT |
2460 | if (flags & O_EXCL) { |
2461 | struct nfs_fattr fattr; | |
659bfcd6 | 2462 | status = nfs4_do_setattr(state->inode, cred, &fattr, sattr, state); |
02a913a7 | 2463 | if (status == 0) |
65e4308d | 2464 | nfs_setattr_update_inode(state->inode, sattr); |
aa53ed54 | 2465 | nfs_post_op_update_inode(state->inode, &fattr); |
02a913a7 | 2466 | } |
ad389da7 | 2467 | if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0) |
dc0b027d | 2468 | status = nfs4_intent_set_file(nd, &path, state, fmode); |
02a913a7 | 2469 | else |
dc0b027d | 2470 | nfs4_close_sync(&path, state, fmode); |
659bfcd6 TM |
2471 | out_putcred: |
2472 | put_rpccred(cred); | |
1da177e4 LT |
2473 | out: |
2474 | return status; | |
2475 | } | |
2476 | ||
2477 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2478 | { | |
16e42959 | 2479 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2480 | struct nfs_removeargs args = { |
1da177e4 | 2481 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2482 | .name.len = name->len, |
2483 | .name.name = name->name, | |
16e42959 TM |
2484 | .bitmask = server->attr_bitmask, |
2485 | }; | |
4fdc17b2 | 2486 | struct nfs_removeres res = { |
16e42959 | 2487 | .server = server, |
1da177e4 | 2488 | }; |
1da177e4 | 2489 | struct rpc_message msg = { |
4fdc17b2 TM |
2490 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2491 | .rpc_argp = &args, | |
2492 | .rpc_resp = &res, | |
1da177e4 LT |
2493 | }; |
2494 | int status; | |
2495 | ||
4fdc17b2 | 2496 | nfs_fattr_init(&res.dir_attr); |
cccef3b9 | 2497 | status = nfs4_call_sync(server, &msg, &args, &res, 1); |
16e42959 TM |
2498 | if (status == 0) { |
2499 | update_changeattr(dir, &res.cinfo); | |
4fdc17b2 | 2500 | nfs_post_op_update_inode(dir, &res.dir_attr); |
16e42959 | 2501 | } |
1da177e4 LT |
2502 | return status; |
2503 | } | |
2504 | ||
2505 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2506 | { | |
2507 | struct nfs4_exception exception = { }; | |
2508 | int err; | |
2509 | do { | |
2510 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2511 | _nfs4_proc_remove(dir, name), | |
2512 | &exception); | |
2513 | } while (exception.retry); | |
2514 | return err; | |
2515 | } | |
2516 | ||
e4eff1a6 | 2517 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2518 | { |
e4eff1a6 TM |
2519 | struct nfs_server *server = NFS_SERVER(dir); |
2520 | struct nfs_removeargs *args = msg->rpc_argp; | |
2521 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2522 | |
a65318bf | 2523 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2524 | res->server = server; |
1da177e4 | 2525 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2526 | } |
2527 | ||
e4eff1a6 | 2528 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2529 | { |
e4eff1a6 TM |
2530 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2531 | ||
472cfbd9 | 2532 | nfs4_sequence_done(res->server, &res->seq_res, task->tk_status); |
9e33bed5 | 2533 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 | 2534 | return 0; |
472cfbd9 | 2535 | nfs4_sequence_free_slot(res->server->nfs_client, &res->seq_res); |
e4eff1a6 TM |
2536 | update_changeattr(dir, &res->cinfo); |
2537 | nfs_post_op_update_inode(dir, &res->dir_attr); | |
2538 | return 1; | |
1da177e4 LT |
2539 | } |
2540 | ||
2541 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2542 | struct inode *new_dir, struct qstr *new_name) | |
2543 | { | |
6caf2c82 | 2544 | struct nfs_server *server = NFS_SERVER(old_dir); |
1da177e4 LT |
2545 | struct nfs4_rename_arg arg = { |
2546 | .old_dir = NFS_FH(old_dir), | |
2547 | .new_dir = NFS_FH(new_dir), | |
2548 | .old_name = old_name, | |
2549 | .new_name = new_name, | |
6caf2c82 TM |
2550 | .bitmask = server->attr_bitmask, |
2551 | }; | |
2552 | struct nfs_fattr old_fattr, new_fattr; | |
2553 | struct nfs4_rename_res res = { | |
2554 | .server = server, | |
2555 | .old_fattr = &old_fattr, | |
2556 | .new_fattr = &new_fattr, | |
1da177e4 | 2557 | }; |
1da177e4 LT |
2558 | struct rpc_message msg = { |
2559 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2560 | .rpc_argp = &arg, | |
2561 | .rpc_resp = &res, | |
2562 | }; | |
2563 | int status; | |
2564 | ||
6caf2c82 TM |
2565 | nfs_fattr_init(res.old_fattr); |
2566 | nfs_fattr_init(res.new_fattr); | |
cccef3b9 | 2567 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
1da177e4 LT |
2568 | |
2569 | if (!status) { | |
2570 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2571 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2572 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2573 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 LT |
2574 | } |
2575 | return status; | |
2576 | } | |
2577 | ||
2578 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2579 | struct inode *new_dir, struct qstr *new_name) | |
2580 | { | |
2581 | struct nfs4_exception exception = { }; | |
2582 | int err; | |
2583 | do { | |
2584 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2585 | _nfs4_proc_rename(old_dir, old_name, | |
2586 | new_dir, new_name), | |
2587 | &exception); | |
2588 | } while (exception.retry); | |
2589 | return err; | |
2590 | } | |
2591 | ||
2592 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2593 | { | |
91ba2eee | 2594 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2595 | struct nfs4_link_arg arg = { |
2596 | .fh = NFS_FH(inode), | |
2597 | .dir_fh = NFS_FH(dir), | |
2598 | .name = name, | |
91ba2eee TM |
2599 | .bitmask = server->attr_bitmask, |
2600 | }; | |
2601 | struct nfs_fattr fattr, dir_attr; | |
2602 | struct nfs4_link_res res = { | |
2603 | .server = server, | |
2604 | .fattr = &fattr, | |
2605 | .dir_attr = &dir_attr, | |
1da177e4 | 2606 | }; |
1da177e4 LT |
2607 | struct rpc_message msg = { |
2608 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2609 | .rpc_argp = &arg, | |
91ba2eee | 2610 | .rpc_resp = &res, |
1da177e4 LT |
2611 | }; |
2612 | int status; | |
2613 | ||
91ba2eee TM |
2614 | nfs_fattr_init(res.fattr); |
2615 | nfs_fattr_init(res.dir_attr); | |
cccef3b9 | 2616 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
91ba2eee TM |
2617 | if (!status) { |
2618 | update_changeattr(dir, &res.cinfo); | |
2619 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2620 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2621 | } |
1da177e4 LT |
2622 | |
2623 | return status; | |
2624 | } | |
2625 | ||
2626 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2627 | { | |
2628 | struct nfs4_exception exception = { }; | |
2629 | int err; | |
2630 | do { | |
2631 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2632 | _nfs4_proc_link(inode, dir, name), | |
2633 | &exception); | |
2634 | } while (exception.retry); | |
2635 | return err; | |
2636 | } | |
2637 | ||
57dc9a57 TM |
2638 | struct nfs4_createdata { |
2639 | struct rpc_message msg; | |
2640 | struct nfs4_create_arg arg; | |
2641 | struct nfs4_create_res res; | |
2642 | struct nfs_fh fh; | |
2643 | struct nfs_fattr fattr; | |
2644 | struct nfs_fattr dir_fattr; | |
2645 | }; | |
2646 | ||
2647 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2648 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2649 | { | |
2650 | struct nfs4_createdata *data; | |
2651 | ||
2652 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2653 | if (data != NULL) { | |
2654 | struct nfs_server *server = NFS_SERVER(dir); | |
2655 | ||
2656 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2657 | data->msg.rpc_argp = &data->arg; | |
2658 | data->msg.rpc_resp = &data->res; | |
2659 | data->arg.dir_fh = NFS_FH(dir); | |
2660 | data->arg.server = server; | |
2661 | data->arg.name = name; | |
2662 | data->arg.attrs = sattr; | |
2663 | data->arg.ftype = ftype; | |
2664 | data->arg.bitmask = server->attr_bitmask; | |
2665 | data->res.server = server; | |
2666 | data->res.fh = &data->fh; | |
2667 | data->res.fattr = &data->fattr; | |
2668 | data->res.dir_fattr = &data->dir_fattr; | |
2669 | nfs_fattr_init(data->res.fattr); | |
2670 | nfs_fattr_init(data->res.dir_fattr); | |
2671 | } | |
2672 | return data; | |
2673 | } | |
2674 | ||
2675 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2676 | { | |
cccef3b9 AA |
2677 | int status = nfs4_call_sync(NFS_SERVER(dir), &data->msg, |
2678 | &data->arg, &data->res, 1); | |
57dc9a57 TM |
2679 | if (status == 0) { |
2680 | update_changeattr(dir, &data->res.dir_cinfo); | |
2681 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2682 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2683 | } | |
2684 | return status; | |
2685 | } | |
2686 | ||
2687 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2688 | { | |
2689 | kfree(data); | |
2690 | } | |
2691 | ||
4f390c15 | 2692 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2693 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2694 | { |
57dc9a57 TM |
2695 | struct nfs4_createdata *data; |
2696 | int status = -ENAMETOOLONG; | |
1da177e4 | 2697 | |
94a6d753 | 2698 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2699 | goto out; |
4f390c15 | 2700 | |
57dc9a57 TM |
2701 | status = -ENOMEM; |
2702 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2703 | if (data == NULL) | |
2704 | goto out; | |
2705 | ||
2706 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2707 | data->arg.u.symlink.pages = &page; | |
2708 | data->arg.u.symlink.len = len; | |
1da177e4 | 2709 | |
57dc9a57 TM |
2710 | status = nfs4_do_create(dir, dentry, data); |
2711 | ||
2712 | nfs4_free_createdata(data); | |
2713 | out: | |
1da177e4 LT |
2714 | return status; |
2715 | } | |
2716 | ||
4f390c15 | 2717 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2718 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2719 | { |
2720 | struct nfs4_exception exception = { }; | |
2721 | int err; | |
2722 | do { | |
2723 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2724 | _nfs4_proc_symlink(dir, dentry, page, |
2725 | len, sattr), | |
1da177e4 LT |
2726 | &exception); |
2727 | } while (exception.retry); | |
2728 | return err; | |
2729 | } | |
2730 | ||
2731 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2732 | struct iattr *sattr) | |
2733 | { | |
57dc9a57 TM |
2734 | struct nfs4_createdata *data; |
2735 | int status = -ENOMEM; | |
1da177e4 | 2736 | |
57dc9a57 TM |
2737 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2738 | if (data == NULL) | |
2739 | goto out; | |
2740 | ||
2741 | status = nfs4_do_create(dir, dentry, data); | |
2742 | ||
2743 | nfs4_free_createdata(data); | |
2744 | out: | |
1da177e4 LT |
2745 | return status; |
2746 | } | |
2747 | ||
2748 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2749 | struct iattr *sattr) | |
2750 | { | |
2751 | struct nfs4_exception exception = { }; | |
2752 | int err; | |
2753 | do { | |
2754 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2755 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2756 | &exception); | |
2757 | } while (exception.retry); | |
2758 | return err; | |
2759 | } | |
2760 | ||
2761 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2762 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2763 | { | |
2764 | struct inode *dir = dentry->d_inode; | |
2765 | struct nfs4_readdir_arg args = { | |
2766 | .fh = NFS_FH(dir), | |
2767 | .pages = &page, | |
2768 | .pgbase = 0, | |
2769 | .count = count, | |
96d25e53 | 2770 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
1da177e4 LT |
2771 | }; |
2772 | struct nfs4_readdir_res res; | |
2773 | struct rpc_message msg = { | |
2774 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2775 | .rpc_argp = &args, | |
2776 | .rpc_resp = &res, | |
2777 | .rpc_cred = cred, | |
2778 | }; | |
2779 | int status; | |
2780 | ||
3110ff80 | 2781 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2782 | dentry->d_parent->d_name.name, |
2783 | dentry->d_name.name, | |
2784 | (unsigned long long)cookie); | |
1da177e4 LT |
2785 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2786 | res.pgbase = args.pgbase; | |
cccef3b9 | 2787 | status = nfs4_call_sync(NFS_SERVER(dir), &msg, &args, &res, 0); |
1da177e4 LT |
2788 | if (status == 0) |
2789 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); | |
c4812998 TM |
2790 | |
2791 | nfs_invalidate_atime(dir); | |
2792 | ||
3110ff80 | 2793 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
2794 | return status; |
2795 | } | |
2796 | ||
2797 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2798 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2799 | { | |
2800 | struct nfs4_exception exception = { }; | |
2801 | int err; | |
2802 | do { | |
2803 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2804 | _nfs4_proc_readdir(dentry, cred, cookie, | |
2805 | page, count, plus), | |
2806 | &exception); | |
2807 | } while (exception.retry); | |
2808 | return err; | |
2809 | } | |
2810 | ||
2811 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2812 | struct iattr *sattr, dev_t rdev) | |
2813 | { | |
57dc9a57 TM |
2814 | struct nfs4_createdata *data; |
2815 | int mode = sattr->ia_mode; | |
2816 | int status = -ENOMEM; | |
1da177e4 LT |
2817 | |
2818 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2819 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
2820 | |
2821 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
2822 | if (data == NULL) | |
2823 | goto out; | |
2824 | ||
1da177e4 | 2825 | if (S_ISFIFO(mode)) |
57dc9a57 | 2826 | data->arg.ftype = NF4FIFO; |
1da177e4 | 2827 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
2828 | data->arg.ftype = NF4BLK; |
2829 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2830 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
2831 | } |
2832 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
2833 | data->arg.ftype = NF4CHR; |
2834 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2835 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 2836 | } |
1da177e4 | 2837 | |
57dc9a57 TM |
2838 | status = nfs4_do_create(dir, dentry, data); |
2839 | ||
2840 | nfs4_free_createdata(data); | |
2841 | out: | |
1da177e4 LT |
2842 | return status; |
2843 | } | |
2844 | ||
2845 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2846 | struct iattr *sattr, dev_t rdev) | |
2847 | { | |
2848 | struct nfs4_exception exception = { }; | |
2849 | int err; | |
2850 | do { | |
2851 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2852 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2853 | &exception); | |
2854 | } while (exception.retry); | |
2855 | return err; | |
2856 | } | |
2857 | ||
2858 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2859 | struct nfs_fsstat *fsstat) | |
2860 | { | |
2861 | struct nfs4_statfs_arg args = { | |
2862 | .fh = fhandle, | |
2863 | .bitmask = server->attr_bitmask, | |
2864 | }; | |
24ad148a BH |
2865 | struct nfs4_statfs_res res = { |
2866 | .fsstat = fsstat, | |
2867 | }; | |
1da177e4 LT |
2868 | struct rpc_message msg = { |
2869 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2870 | .rpc_argp = &args, | |
24ad148a | 2871 | .rpc_resp = &res, |
1da177e4 LT |
2872 | }; |
2873 | ||
0e574af1 | 2874 | nfs_fattr_init(fsstat->fattr); |
cccef3b9 | 2875 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2876 | } |
2877 | ||
2878 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
2879 | { | |
2880 | struct nfs4_exception exception = { }; | |
2881 | int err; | |
2882 | do { | |
2883 | err = nfs4_handle_exception(server, | |
2884 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
2885 | &exception); | |
2886 | } while (exception.retry); | |
2887 | return err; | |
2888 | } | |
2889 | ||
2890 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
2891 | struct nfs_fsinfo *fsinfo) | |
2892 | { | |
2893 | struct nfs4_fsinfo_arg args = { | |
2894 | .fh = fhandle, | |
2895 | .bitmask = server->attr_bitmask, | |
2896 | }; | |
3dda5e43 BH |
2897 | struct nfs4_fsinfo_res res = { |
2898 | .fsinfo = fsinfo, | |
2899 | }; | |
1da177e4 LT |
2900 | struct rpc_message msg = { |
2901 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
2902 | .rpc_argp = &args, | |
3dda5e43 | 2903 | .rpc_resp = &res, |
1da177e4 LT |
2904 | }; |
2905 | ||
cccef3b9 | 2906 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2907 | } |
2908 | ||
2909 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2910 | { | |
2911 | struct nfs4_exception exception = { }; | |
2912 | int err; | |
2913 | ||
2914 | do { | |
2915 | err = nfs4_handle_exception(server, | |
2916 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
2917 | &exception); | |
2918 | } while (exception.retry); | |
2919 | return err; | |
2920 | } | |
2921 | ||
2922 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2923 | { | |
0e574af1 | 2924 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
2925 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
2926 | } | |
2927 | ||
2928 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2929 | struct nfs_pathconf *pathconf) | |
2930 | { | |
2931 | struct nfs4_pathconf_arg args = { | |
2932 | .fh = fhandle, | |
2933 | .bitmask = server->attr_bitmask, | |
2934 | }; | |
d45b2989 BH |
2935 | struct nfs4_pathconf_res res = { |
2936 | .pathconf = pathconf, | |
2937 | }; | |
1da177e4 LT |
2938 | struct rpc_message msg = { |
2939 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
2940 | .rpc_argp = &args, | |
d45b2989 | 2941 | .rpc_resp = &res, |
1da177e4 LT |
2942 | }; |
2943 | ||
2944 | /* None of the pathconf attributes are mandatory to implement */ | |
2945 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
2946 | memset(pathconf, 0, sizeof(*pathconf)); | |
2947 | return 0; | |
2948 | } | |
2949 | ||
0e574af1 | 2950 | nfs_fattr_init(pathconf->fattr); |
cccef3b9 | 2951 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2952 | } |
2953 | ||
2954 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2955 | struct nfs_pathconf *pathconf) | |
2956 | { | |
2957 | struct nfs4_exception exception = { }; | |
2958 | int err; | |
2959 | ||
2960 | do { | |
2961 | err = nfs4_handle_exception(server, | |
2962 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
2963 | &exception); | |
2964 | } while (exception.retry); | |
2965 | return err; | |
2966 | } | |
2967 | ||
ec06c096 | 2968 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 2969 | { |
ec06c096 | 2970 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2971 | |
f11c88af AA |
2972 | dprintk("--> %s\n", __func__); |
2973 | ||
2974 | /* nfs4_sequence_free_slot called in the read rpc_call_done */ | |
2975 | nfs4_sequence_done(server, &data->res.seq_res, task->tk_status); | |
2976 | ||
9e33bed5 | 2977 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
eedc020e | 2978 | nfs4_restart_rpc(task, server->nfs_client); |
ec06c096 | 2979 | return -EAGAIN; |
1da177e4 | 2980 | } |
8850df99 TM |
2981 | |
2982 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 2983 | if (task->tk_status > 0) |
ec06c096 TM |
2984 | renew_lease(server, data->timestamp); |
2985 | return 0; | |
1da177e4 LT |
2986 | } |
2987 | ||
bdc7f021 | 2988 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 2989 | { |
1da177e4 | 2990 | data->timestamp = jiffies; |
bdc7f021 | 2991 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
2992 | } |
2993 | ||
788e7a89 | 2994 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2995 | { |
1da177e4 LT |
2996 | struct inode *inode = data->inode; |
2997 | ||
def6ed7e AA |
2998 | /* slot is freed in nfs_writeback_done */ |
2999 | nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res, | |
3000 | task->tk_status); | |
3001 | ||
9e33bed5 | 3002 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
eedc020e | 3003 | nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3004 | return -EAGAIN; |
1da177e4 | 3005 | } |
4f9838c7 | 3006 | if (task->tk_status >= 0) { |
1da177e4 | 3007 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3008 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3009 | } |
788e7a89 | 3010 | return 0; |
1da177e4 LT |
3011 | } |
3012 | ||
bdc7f021 | 3013 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3014 | { |
bdc7f021 TM |
3015 | struct nfs_server *server = NFS_SERVER(data->inode); |
3016 | ||
a65318bf | 3017 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3018 | data->res.server = server; |
1da177e4 LT |
3019 | data->timestamp = jiffies; |
3020 | ||
bdc7f021 | 3021 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3022 | } |
3023 | ||
788e7a89 | 3024 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3025 | { |
1da177e4 LT |
3026 | struct inode *inode = data->inode; |
3027 | ||
21d9a851 AA |
3028 | nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res, |
3029 | task->tk_status); | |
9e33bed5 | 3030 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
eedc020e | 3031 | nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3032 | return -EAGAIN; |
1da177e4 | 3033 | } |
21d9a851 AA |
3034 | nfs4_sequence_free_slot(NFS_SERVER(inode)->nfs_client, |
3035 | &data->res.seq_res); | |
9e08a3c5 | 3036 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3037 | return 0; |
1da177e4 LT |
3038 | } |
3039 | ||
bdc7f021 | 3040 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3041 | { |
788e7a89 | 3042 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3043 | |
a65318bf | 3044 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3045 | data->res.server = server; |
bdc7f021 | 3046 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3047 | } |
3048 | ||
3049 | /* | |
3050 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3051 | * standalone procedure for queueing an asynchronous RENEW. | |
3052 | */ | |
963d8fe5 | 3053 | static void nfs4_renew_done(struct rpc_task *task, void *data) |
1da177e4 | 3054 | { |
adfa6f98 | 3055 | struct nfs_client *clp = (struct nfs_client *)task->tk_msg.rpc_argp; |
963d8fe5 | 3056 | unsigned long timestamp = (unsigned long)data; |
1da177e4 LT |
3057 | |
3058 | if (task->tk_status < 0) { | |
95baa25c TM |
3059 | /* Unless we're shutting down, schedule state recovery! */ |
3060 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0) | |
3061 | nfs4_schedule_state_recovery(clp); | |
1da177e4 LT |
3062 | return; |
3063 | } | |
3064 | spin_lock(&clp->cl_lock); | |
3065 | if (time_before(clp->cl_last_renewal,timestamp)) | |
3066 | clp->cl_last_renewal = timestamp; | |
3067 | spin_unlock(&clp->cl_lock); | |
3068 | } | |
3069 | ||
963d8fe5 TM |
3070 | static const struct rpc_call_ops nfs4_renew_ops = { |
3071 | .rpc_call_done = nfs4_renew_done, | |
3072 | }; | |
3073 | ||
adfa6f98 | 3074 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3075 | { |
3076 | struct rpc_message msg = { | |
3077 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3078 | .rpc_argp = clp, | |
b4454fe1 | 3079 | .rpc_cred = cred, |
1da177e4 LT |
3080 | }; |
3081 | ||
3082 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, | |
963d8fe5 | 3083 | &nfs4_renew_ops, (void *)jiffies); |
1da177e4 LT |
3084 | } |
3085 | ||
adfa6f98 | 3086 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3087 | { |
3088 | struct rpc_message msg = { | |
3089 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3090 | .rpc_argp = clp, | |
b4454fe1 | 3091 | .rpc_cred = cred, |
1da177e4 LT |
3092 | }; |
3093 | unsigned long now = jiffies; | |
3094 | int status; | |
3095 | ||
3096 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3097 | if (status < 0) | |
3098 | return status; | |
3099 | spin_lock(&clp->cl_lock); | |
3100 | if (time_before(clp->cl_last_renewal,now)) | |
3101 | clp->cl_last_renewal = now; | |
3102 | spin_unlock(&clp->cl_lock); | |
3103 | return 0; | |
3104 | } | |
3105 | ||
aa1870af BF |
3106 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3107 | { | |
3108 | return (server->caps & NFS_CAP_ACLS) | |
3109 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3110 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3111 | } | |
3112 | ||
3113 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3114 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3115 | * the stack. | |
3116 | */ | |
3117 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3118 | ||
3119 | static void buf_to_pages(const void *buf, size_t buflen, | |
3120 | struct page **pages, unsigned int *pgbase) | |
3121 | { | |
3122 | const void *p = buf; | |
3123 | ||
3124 | *pgbase = offset_in_page(buf); | |
3125 | p -= *pgbase; | |
3126 | while (p < buf + buflen) { | |
3127 | *(pages++) = virt_to_page(p); | |
3128 | p += PAGE_CACHE_SIZE; | |
3129 | } | |
3130 | } | |
3131 | ||
e50a1c2e BF |
3132 | struct nfs4_cached_acl { |
3133 | int cached; | |
3134 | size_t len; | |
3e9d4154 | 3135 | char data[0]; |
e50a1c2e BF |
3136 | }; |
3137 | ||
3138 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3139 | { | |
3140 | struct nfs_inode *nfsi = NFS_I(inode); | |
3141 | ||
3142 | spin_lock(&inode->i_lock); | |
3143 | kfree(nfsi->nfs4_acl); | |
3144 | nfsi->nfs4_acl = acl; | |
3145 | spin_unlock(&inode->i_lock); | |
3146 | } | |
3147 | ||
3148 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3149 | { | |
3150 | nfs4_set_cached_acl(inode, NULL); | |
3151 | } | |
3152 | ||
3153 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3154 | { | |
3155 | struct nfs_inode *nfsi = NFS_I(inode); | |
3156 | struct nfs4_cached_acl *acl; | |
3157 | int ret = -ENOENT; | |
3158 | ||
3159 | spin_lock(&inode->i_lock); | |
3160 | acl = nfsi->nfs4_acl; | |
3161 | if (acl == NULL) | |
3162 | goto out; | |
3163 | if (buf == NULL) /* user is just asking for length */ | |
3164 | goto out_len; | |
3165 | if (acl->cached == 0) | |
3166 | goto out; | |
3167 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3168 | if (acl->len > buflen) | |
3169 | goto out; | |
3170 | memcpy(buf, acl->data, acl->len); | |
3171 | out_len: | |
3172 | ret = acl->len; | |
3173 | out: | |
3174 | spin_unlock(&inode->i_lock); | |
3175 | return ret; | |
3176 | } | |
3177 | ||
3178 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3179 | { | |
3180 | struct nfs4_cached_acl *acl; | |
3181 | ||
3182 | if (buf && acl_len <= PAGE_SIZE) { | |
3183 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3184 | if (acl == NULL) | |
3185 | goto out; | |
3186 | acl->cached = 1; | |
3187 | memcpy(acl->data, buf, acl_len); | |
3188 | } else { | |
3189 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3190 | if (acl == NULL) | |
3191 | goto out; | |
3192 | acl->cached = 0; | |
3193 | } | |
3194 | acl->len = acl_len; | |
3195 | out: | |
3196 | nfs4_set_cached_acl(inode, acl); | |
3197 | } | |
3198 | ||
16b4289c | 3199 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3200 | { |
aa1870af BF |
3201 | struct page *pages[NFS4ACL_MAXPAGES]; |
3202 | struct nfs_getaclargs args = { | |
3203 | .fh = NFS_FH(inode), | |
3204 | .acl_pages = pages, | |
3205 | .acl_len = buflen, | |
3206 | }; | |
663c79b3 BH |
3207 | struct nfs_getaclres res = { |
3208 | .acl_len = buflen, | |
3209 | }; | |
e50a1c2e | 3210 | void *resp_buf; |
aa1870af BF |
3211 | struct rpc_message msg = { |
3212 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3213 | .rpc_argp = &args, | |
663c79b3 | 3214 | .rpc_resp = &res, |
aa1870af | 3215 | }; |
e50a1c2e | 3216 | struct page *localpage = NULL; |
aa1870af BF |
3217 | int ret; |
3218 | ||
e50a1c2e BF |
3219 | if (buflen < PAGE_SIZE) { |
3220 | /* As long as we're doing a round trip to the server anyway, | |
3221 | * let's be prepared for a page of acl data. */ | |
3222 | localpage = alloc_page(GFP_KERNEL); | |
3223 | resp_buf = page_address(localpage); | |
3224 | if (localpage == NULL) | |
3225 | return -ENOMEM; | |
3226 | args.acl_pages[0] = localpage; | |
3227 | args.acl_pgbase = 0; | |
663c79b3 | 3228 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3229 | } else { |
3230 | resp_buf = buf; | |
3231 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3232 | } | |
cccef3b9 | 3233 | ret = nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
e50a1c2e BF |
3234 | if (ret) |
3235 | goto out_free; | |
663c79b3 BH |
3236 | if (res.acl_len > args.acl_len) |
3237 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3238 | else |
663c79b3 | 3239 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3240 | if (buf) { |
3241 | ret = -ERANGE; | |
663c79b3 | 3242 | if (res.acl_len > buflen) |
e50a1c2e BF |
3243 | goto out_free; |
3244 | if (localpage) | |
663c79b3 | 3245 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3246 | } |
663c79b3 | 3247 | ret = res.acl_len; |
e50a1c2e BF |
3248 | out_free: |
3249 | if (localpage) | |
3250 | __free_page(localpage); | |
aa1870af BF |
3251 | return ret; |
3252 | } | |
3253 | ||
16b4289c TM |
3254 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3255 | { | |
3256 | struct nfs4_exception exception = { }; | |
3257 | ssize_t ret; | |
3258 | do { | |
3259 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3260 | if (ret >= 0) | |
3261 | break; | |
3262 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3263 | } while (exception.retry); | |
3264 | return ret; | |
3265 | } | |
3266 | ||
e50a1c2e BF |
3267 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3268 | { | |
3269 | struct nfs_server *server = NFS_SERVER(inode); | |
3270 | int ret; | |
3271 | ||
3272 | if (!nfs4_server_supports_acls(server)) | |
3273 | return -EOPNOTSUPP; | |
3274 | ret = nfs_revalidate_inode(server, inode); | |
3275 | if (ret < 0) | |
3276 | return ret; | |
3277 | ret = nfs4_read_cached_acl(inode, buf, buflen); | |
3278 | if (ret != -ENOENT) | |
3279 | return ret; | |
3280 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3281 | } | |
3282 | ||
16b4289c | 3283 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3284 | { |
3285 | struct nfs_server *server = NFS_SERVER(inode); | |
3286 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3287 | struct nfs_setaclargs arg = { | |
3288 | .fh = NFS_FH(inode), | |
3289 | .acl_pages = pages, | |
3290 | .acl_len = buflen, | |
3291 | }; | |
73c403a9 | 3292 | struct nfs_setaclres res; |
4b580ee3 BF |
3293 | struct rpc_message msg = { |
3294 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3295 | .rpc_argp = &arg, | |
73c403a9 | 3296 | .rpc_resp = &res, |
4b580ee3 BF |
3297 | }; |
3298 | int ret; | |
3299 | ||
3300 | if (!nfs4_server_supports_acls(server)) | |
3301 | return -EOPNOTSUPP; | |
642ac549 | 3302 | nfs_inode_return_delegation(inode); |
4b580ee3 | 3303 | buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
cccef3b9 | 3304 | ret = nfs4_call_sync(server, &msg, &arg, &res, 1); |
f41f7418 TM |
3305 | nfs_access_zap_cache(inode); |
3306 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3307 | return ret; |
3308 | } | |
3309 | ||
16b4289c TM |
3310 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3311 | { | |
3312 | struct nfs4_exception exception = { }; | |
3313 | int err; | |
3314 | do { | |
3315 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3316 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3317 | &exception); | |
3318 | } while (exception.retry); | |
3319 | return err; | |
3320 | } | |
3321 | ||
1da177e4 | 3322 | static int |
8328d59f | 3323 | _nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs_client *clp, struct nfs4_state *state) |
1da177e4 | 3324 | { |
1da177e4 LT |
3325 | if (!clp || task->tk_status >= 0) |
3326 | return 0; | |
3327 | switch(task->tk_status) { | |
9e33bed5 TM |
3328 | case -NFS4ERR_ADMIN_REVOKED: |
3329 | case -NFS4ERR_BAD_STATEID: | |
3330 | case -NFS4ERR_OPENMODE: | |
3331 | if (state == NULL) | |
3332 | break; | |
3333 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1da177e4 LT |
3334 | case -NFS4ERR_STALE_CLIENTID: |
3335 | case -NFS4ERR_STALE_STATEID: | |
3336 | case -NFS4ERR_EXPIRED: | |
5d00837b | 3337 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
1da177e4 | 3338 | nfs4_schedule_state_recovery(clp); |
e005e804 | 3339 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
fda13939 | 3340 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); |
1da177e4 LT |
3341 | task->tk_status = 0; |
3342 | return -EAGAIN; | |
4745e315 AA |
3343 | #if defined(CONFIG_NFS_V4_1) |
3344 | case -NFS4ERR_BADSESSION: | |
3345 | case -NFS4ERR_BADSLOT: | |
3346 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3347 | case -NFS4ERR_DEADSESSION: | |
3348 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3349 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3350 | case -NFS4ERR_SEQ_MISORDERED: | |
3351 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3352 | task->tk_status); | |
3353 | set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state); | |
3354 | task->tk_status = 0; | |
3355 | return -EAGAIN; | |
3356 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3357 | case -NFS4ERR_DELAY: |
8328d59f AA |
3358 | if (server) |
3359 | nfs_inc_server_stats(server, NFSIOS_DELAY); | |
006ea73e | 3360 | case -NFS4ERR_GRACE: |
1da177e4 LT |
3361 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3362 | task->tk_status = 0; | |
3363 | return -EAGAIN; | |
3364 | case -NFS4ERR_OLD_STATEID: | |
3365 | task->tk_status = 0; | |
3366 | return -EAGAIN; | |
3367 | } | |
3368 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3369 | return 0; | |
3370 | } | |
3371 | ||
8328d59f AA |
3372 | static int |
3373 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) | |
3374 | { | |
3375 | return _nfs4_async_handle_error(task, server, server->nfs_client, state); | |
3376 | } | |
3377 | ||
adfa6f98 | 3378 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred) |
1da177e4 LT |
3379 | { |
3380 | nfs4_verifier sc_verifier; | |
3381 | struct nfs4_setclientid setclientid = { | |
3382 | .sc_verifier = &sc_verifier, | |
3383 | .sc_prog = program, | |
3384 | }; | |
3385 | struct rpc_message msg = { | |
3386 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3387 | .rpc_argp = &setclientid, | |
3388 | .rpc_resp = clp, | |
286d7d6a | 3389 | .rpc_cred = cred, |
1da177e4 | 3390 | }; |
bc4785cd | 3391 | __be32 *p; |
1da177e4 LT |
3392 | int loop = 0; |
3393 | int status; | |
3394 | ||
bc4785cd | 3395 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3396 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3397 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3398 | ||
3399 | for(;;) { | |
3400 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3401 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3402 | clp->cl_ipaddr, |
3403 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3404 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3405 | rpc_peeraddr2str(clp->cl_rpcclient, |
3406 | RPC_DISPLAY_PROTO), | |
78ea323b | 3407 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3408 | clp->cl_id_uniquifier); |
3409 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3410 | sizeof(setclientid.sc_netid), |
3411 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3412 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3413 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3414 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3415 | clp->cl_ipaddr, port >> 8, port & 255); |
3416 | ||
3417 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3418 | if (status != -NFS4ERR_CLID_INUSE) | |
3419 | break; | |
3420 | if (signalled()) | |
3421 | break; | |
3422 | if (loop++ & 1) | |
3423 | ssleep(clp->cl_lease_time + 1); | |
3424 | else | |
3425 | if (++clp->cl_id_uniquifier == 0) | |
3426 | break; | |
3427 | } | |
3428 | return status; | |
3429 | } | |
3430 | ||
adfa6f98 | 3431 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3432 | { |
3433 | struct nfs_fsinfo fsinfo; | |
3434 | struct rpc_message msg = { | |
3435 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
3436 | .rpc_argp = clp, | |
3437 | .rpc_resp = &fsinfo, | |
286d7d6a | 3438 | .rpc_cred = cred, |
1da177e4 LT |
3439 | }; |
3440 | unsigned long now; | |
3441 | int status; | |
3442 | ||
3443 | now = jiffies; | |
3444 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3445 | if (status == 0) { | |
3446 | spin_lock(&clp->cl_lock); | |
3447 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3448 | clp->cl_last_renewal = now; | |
3449 | spin_unlock(&clp->cl_lock); | |
3450 | } | |
3451 | return status; | |
3452 | } | |
3453 | ||
adfa6f98 | 3454 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
51581f3b | 3455 | { |
77e03677 | 3456 | long timeout = 0; |
51581f3b TM |
3457 | int err; |
3458 | do { | |
3459 | err = _nfs4_proc_setclientid_confirm(clp, cred); | |
3460 | switch (err) { | |
3461 | case 0: | |
3462 | return err; | |
3463 | case -NFS4ERR_RESOURCE: | |
3464 | /* The IBM lawyers misread another document! */ | |
3465 | case -NFS4ERR_DELAY: | |
3466 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
3467 | } | |
3468 | } while (err == 0); | |
3469 | return err; | |
3470 | } | |
3471 | ||
fe650407 TM |
3472 | struct nfs4_delegreturndata { |
3473 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3474 | struct nfs4_delegreturnres res; |
fe650407 TM |
3475 | struct nfs_fh fh; |
3476 | nfs4_stateid stateid; | |
26e976a8 | 3477 | unsigned long timestamp; |
fa178f29 | 3478 | struct nfs_fattr fattr; |
fe650407 TM |
3479 | int rpc_status; |
3480 | }; | |
3481 | ||
fe650407 TM |
3482 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3483 | { | |
3484 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 AA |
3485 | |
3486 | nfs4_sequence_done_free_slot(data->res.server, &data->res.seq_res, | |
3487 | task->tk_status); | |
3488 | ||
fe650407 | 3489 | data->rpc_status = task->tk_status; |
26e976a8 | 3490 | if (data->rpc_status == 0) |
fa178f29 | 3491 | renew_lease(data->res.server, data->timestamp); |
fe650407 TM |
3492 | } |
3493 | ||
3494 | static void nfs4_delegreturn_release(void *calldata) | |
3495 | { | |
fe650407 TM |
3496 | kfree(calldata); |
3497 | } | |
3498 | ||
938e1010 AA |
3499 | #if defined(CONFIG_NFS_V4_1) |
3500 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3501 | { | |
3502 | struct nfs4_delegreturndata *d_data; | |
3503 | ||
3504 | d_data = (struct nfs4_delegreturndata *)data; | |
3505 | ||
3506 | if (nfs4_setup_sequence(d_data->res.server->nfs_client, | |
3507 | &d_data->args.seq_args, | |
3508 | &d_data->res.seq_res, 1, task)) | |
3509 | return; | |
3510 | rpc_call_start(task); | |
3511 | } | |
3512 | #endif /* CONFIG_NFS_V4_1 */ | |
3513 | ||
c8d149f3 | 3514 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3515 | #if defined(CONFIG_NFS_V4_1) |
3516 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3517 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3518 | .rpc_call_done = nfs4_delegreturn_done, |
3519 | .rpc_release = nfs4_delegreturn_release, | |
3520 | }; | |
3521 | ||
e6f81075 | 3522 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3523 | { |
3524 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3525 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3526 | struct rpc_task *task; |
5138fde0 TM |
3527 | struct rpc_message msg = { |
3528 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3529 | .rpc_cred = cred, | |
3530 | }; | |
c970aa85 TM |
3531 | struct rpc_task_setup task_setup_data = { |
3532 | .rpc_client = server->client, | |
5138fde0 | 3533 | .rpc_message = &msg, |
c970aa85 TM |
3534 | .callback_ops = &nfs4_delegreturn_ops, |
3535 | .flags = RPC_TASK_ASYNC, | |
3536 | }; | |
e6f81075 | 3537 | int status = 0; |
fe650407 | 3538 | |
938e1010 | 3539 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
fe650407 TM |
3540 | if (data == NULL) |
3541 | return -ENOMEM; | |
3542 | data->args.fhandle = &data->fh; | |
3543 | data->args.stateid = &data->stateid; | |
fa178f29 | 3544 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3545 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3546 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3547 | data->res.fattr = &data->fattr; |
3548 | data->res.server = server; | |
5f7dbd5c | 3549 | data->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
5138fde0 | 3550 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3551 | data->timestamp = jiffies; |
fe650407 TM |
3552 | data->rpc_status = 0; |
3553 | ||
c970aa85 | 3554 | task_setup_data.callback_data = data; |
5138fde0 TM |
3555 | msg.rpc_argp = &data->args, |
3556 | msg.rpc_resp = &data->res, | |
c970aa85 | 3557 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3558 | if (IS_ERR(task)) |
fe650407 | 3559 | return PTR_ERR(task); |
e6f81075 TM |
3560 | if (!issync) |
3561 | goto out; | |
fe650407 | 3562 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3563 | if (status != 0) |
3564 | goto out; | |
3565 | status = data->rpc_status; | |
3566 | if (status != 0) | |
3567 | goto out; | |
3568 | nfs_refresh_inode(inode, &data->fattr); | |
3569 | out: | |
e6b3c4db | 3570 | rpc_put_task(task); |
fe650407 | 3571 | return status; |
1da177e4 LT |
3572 | } |
3573 | ||
e6f81075 | 3574 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3575 | { |
3576 | struct nfs_server *server = NFS_SERVER(inode); | |
3577 | struct nfs4_exception exception = { }; | |
3578 | int err; | |
3579 | do { | |
e6f81075 | 3580 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3581 | switch (err) { |
3582 | case -NFS4ERR_STALE_STATEID: | |
3583 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3584 | case 0: |
3585 | return 0; | |
3586 | } | |
3587 | err = nfs4_handle_exception(server, err, &exception); | |
3588 | } while (exception.retry); | |
3589 | return err; | |
3590 | } | |
3591 | ||
3592 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3593 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3594 | ||
3595 | /* | |
3596 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3597 | */ | |
3598 | static unsigned long | |
3599 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3600 | { | |
150030b7 | 3601 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3602 | timeout <<= 1; |
3603 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3604 | return NFS4_LOCK_MAXTIMEOUT; | |
3605 | return timeout; | |
3606 | } | |
3607 | ||
1da177e4 LT |
3608 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3609 | { | |
3610 | struct inode *inode = state->inode; | |
3611 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3612 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3613 | struct nfs_lockt_args arg = { |
1da177e4 | 3614 | .fh = NFS_FH(inode), |
911d1aaf | 3615 | .fl = request, |
1da177e4 | 3616 | }; |
911d1aaf TM |
3617 | struct nfs_lockt_res res = { |
3618 | .denied = request, | |
1da177e4 LT |
3619 | }; |
3620 | struct rpc_message msg = { | |
3621 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3622 | .rpc_argp = &arg, | |
3623 | .rpc_resp = &res, | |
3624 | .rpc_cred = state->owner->so_cred, | |
3625 | }; | |
1da177e4 LT |
3626 | struct nfs4_lock_state *lsp; |
3627 | int status; | |
3628 | ||
911d1aaf | 3629 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3630 | status = nfs4_set_lock_state(state, request); |
3631 | if (status != 0) | |
3632 | goto out; | |
3633 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3634 | arg.lock_owner.id = lsp->ls_id.id; |
cccef3b9 | 3635 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
911d1aaf TM |
3636 | switch (status) { |
3637 | case 0: | |
3638 | request->fl_type = F_UNLCK; | |
3639 | break; | |
3640 | case -NFS4ERR_DENIED: | |
3641 | status = 0; | |
1da177e4 | 3642 | } |
70cc6487 | 3643 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3644 | out: |
1da177e4 LT |
3645 | return status; |
3646 | } | |
3647 | ||
3648 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3649 | { | |
3650 | struct nfs4_exception exception = { }; | |
3651 | int err; | |
3652 | ||
3653 | do { | |
3654 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3655 | _nfs4_proc_getlk(state, cmd, request), | |
3656 | &exception); | |
3657 | } while (exception.retry); | |
3658 | return err; | |
3659 | } | |
3660 | ||
3661 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3662 | { | |
3663 | int res = 0; | |
3664 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3665 | case FL_POSIX: | |
3666 | res = posix_lock_file_wait(file, fl); | |
3667 | break; | |
3668 | case FL_FLOCK: | |
3669 | res = flock_lock_file_wait(file, fl); | |
3670 | break; | |
3671 | default: | |
3672 | BUG(); | |
3673 | } | |
1da177e4 LT |
3674 | return res; |
3675 | } | |
3676 | ||
faf5f49c | 3677 | struct nfs4_unlockdata { |
911d1aaf TM |
3678 | struct nfs_locku_args arg; |
3679 | struct nfs_locku_res res; | |
faf5f49c TM |
3680 | struct nfs4_lock_state *lsp; |
3681 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3682 | struct file_lock fl; |
3683 | const struct nfs_server *server; | |
26e976a8 | 3684 | unsigned long timestamp; |
faf5f49c TM |
3685 | }; |
3686 | ||
911d1aaf TM |
3687 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3688 | struct nfs_open_context *ctx, | |
3689 | struct nfs4_lock_state *lsp, | |
3690 | struct nfs_seqid *seqid) | |
3691 | { | |
3692 | struct nfs4_unlockdata *p; | |
3693 | struct inode *inode = lsp->ls_state->inode; | |
3694 | ||
a893693c | 3695 | p = kzalloc(sizeof(*p), GFP_KERNEL); |
911d1aaf TM |
3696 | if (p == NULL) |
3697 | return NULL; | |
3698 | p->arg.fh = NFS_FH(inode); | |
3699 | p->arg.fl = &p->fl; | |
3700 | p->arg.seqid = seqid; | |
c1d51931 | 3701 | p->res.seqid = seqid; |
5f7dbd5c | 3702 | p->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
911d1aaf TM |
3703 | p->arg.stateid = &lsp->ls_stateid; |
3704 | p->lsp = lsp; | |
3705 | atomic_inc(&lsp->ls_count); | |
3706 | /* Ensure we don't close file until we're done freeing locks! */ | |
3707 | p->ctx = get_nfs_open_context(ctx); | |
3708 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3709 | p->server = NFS_SERVER(inode); | |
3710 | return p; | |
3711 | } | |
3712 | ||
06f814a3 | 3713 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3714 | { |
963d8fe5 | 3715 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3716 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3717 | nfs4_put_lock_state(calldata->lsp); |
3718 | put_nfs_open_context(calldata->ctx); | |
3719 | kfree(calldata); | |
faf5f49c TM |
3720 | } |
3721 | ||
963d8fe5 | 3722 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3723 | { |
963d8fe5 | 3724 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3725 | |
a893693c AA |
3726 | nfs4_sequence_done(calldata->server, &calldata->res.seq_res, |
3727 | task->tk_status); | |
06f814a3 TM |
3728 | if (RPC_ASSASSINATED(task)) |
3729 | return; | |
faf5f49c TM |
3730 | switch (task->tk_status) { |
3731 | case 0: | |
3732 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3733 | calldata->res.stateid.data, |
faf5f49c | 3734 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3735 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 3736 | break; |
9e33bed5 TM |
3737 | case -NFS4ERR_BAD_STATEID: |
3738 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
3739 | case -NFS4ERR_STALE_STATEID: |
3740 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
3741 | break; |
3742 | default: | |
9e33bed5 | 3743 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
eedc020e AA |
3744 | nfs4_restart_rpc(task, |
3745 | calldata->server->nfs_client); | |
faf5f49c | 3746 | } |
a893693c AA |
3747 | nfs4_sequence_free_slot(calldata->server->nfs_client, |
3748 | &calldata->res.seq_res); | |
faf5f49c TM |
3749 | } |
3750 | ||
4ce70ada | 3751 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 3752 | { |
4ce70ada | 3753 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3754 | |
911d1aaf | 3755 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
3756 | return; |
3757 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
3758 | /* Note: exit _without_ running nfs4_locku_done */ |
3759 | task->tk_action = NULL; | |
faf5f49c TM |
3760 | return; |
3761 | } | |
26e976a8 | 3762 | calldata->timestamp = jiffies; |
a893693c AA |
3763 | if (nfs4_setup_sequence(calldata->server->nfs_client, |
3764 | &calldata->arg.seq_args, | |
3765 | &calldata->res.seq_res, 1, task)) | |
3766 | return; | |
5138fde0 | 3767 | rpc_call_start(task); |
faf5f49c TM |
3768 | } |
3769 | ||
963d8fe5 | 3770 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 3771 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 3772 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 3773 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
3774 | }; |
3775 | ||
a5d16a4d TM |
3776 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
3777 | struct nfs_open_context *ctx, | |
3778 | struct nfs4_lock_state *lsp, | |
3779 | struct nfs_seqid *seqid) | |
3780 | { | |
3781 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
3782 | struct rpc_message msg = { |
3783 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
3784 | .rpc_cred = ctx->cred, | |
3785 | }; | |
c970aa85 TM |
3786 | struct rpc_task_setup task_setup_data = { |
3787 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 3788 | .rpc_message = &msg, |
c970aa85 | 3789 | .callback_ops = &nfs4_locku_ops, |
101070ca | 3790 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3791 | .flags = RPC_TASK_ASYNC, |
3792 | }; | |
a5d16a4d | 3793 | |
137d6aca FF |
3794 | /* Ensure this is an unlock - when canceling a lock, the |
3795 | * canceled lock is passed in, and it won't be an unlock. | |
3796 | */ | |
3797 | fl->fl_type = F_UNLCK; | |
3798 | ||
a5d16a4d TM |
3799 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
3800 | if (data == NULL) { | |
3801 | nfs_free_seqid(seqid); | |
3802 | return ERR_PTR(-ENOMEM); | |
3803 | } | |
3804 | ||
5138fde0 TM |
3805 | msg.rpc_argp = &data->arg, |
3806 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
3807 | task_setup_data.callback_data = data; |
3808 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
3809 | } |
3810 | ||
faf5f49c TM |
3811 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
3812 | { | |
19e03c57 | 3813 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 3814 | struct nfs_seqid *seqid; |
1da177e4 | 3815 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
3816 | struct rpc_task *task; |
3817 | int status = 0; | |
536ff0f8 | 3818 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 3819 | |
8d0a8a9d | 3820 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
3821 | /* Unlock _before_ we do the RPC call */ |
3822 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
3823 | down_read(&nfsi->rwsem); |
3824 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
3825 | up_read(&nfsi->rwsem); | |
9b073574 | 3826 | goto out; |
19e03c57 TM |
3827 | } |
3828 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 3829 | if (status != 0) |
9b073574 TM |
3830 | goto out; |
3831 | /* Is this a delegated lock? */ | |
3832 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
3833 | goto out; | |
8d0a8a9d | 3834 | lsp = request->fl_u.nfs4_fl.owner; |
911d1aaf | 3835 | seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
9b073574 | 3836 | status = -ENOMEM; |
911d1aaf | 3837 | if (seqid == NULL) |
9b073574 | 3838 | goto out; |
cd3758e3 | 3839 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
3840 | status = PTR_ERR(task); |
3841 | if (IS_ERR(task)) | |
9b073574 | 3842 | goto out; |
a5d16a4d | 3843 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 3844 | rpc_put_task(task); |
9b073574 | 3845 | out: |
536ff0f8 | 3846 | request->fl_flags = fl_flags; |
1da177e4 LT |
3847 | return status; |
3848 | } | |
3849 | ||
a5d16a4d TM |
3850 | struct nfs4_lockdata { |
3851 | struct nfs_lock_args arg; | |
3852 | struct nfs_lock_res res; | |
3853 | struct nfs4_lock_state *lsp; | |
3854 | struct nfs_open_context *ctx; | |
3855 | struct file_lock fl; | |
26e976a8 | 3856 | unsigned long timestamp; |
a5d16a4d TM |
3857 | int rpc_status; |
3858 | int cancelled; | |
66179efe | 3859 | struct nfs_server *server; |
a5d16a4d TM |
3860 | }; |
3861 | ||
3862 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
3863 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp) | |
1da177e4 | 3864 | { |
a5d16a4d TM |
3865 | struct nfs4_lockdata *p; |
3866 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 3867 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d TM |
3868 | |
3869 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
3870 | if (p == NULL) | |
3871 | return NULL; | |
3872 | ||
3873 | p->arg.fh = NFS_FH(inode); | |
3874 | p->arg.fl = &p->fl; | |
2f74c0a0 TM |
3875 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid); |
3876 | if (p->arg.open_seqid == NULL) | |
3877 | goto out_free; | |
a5d16a4d TM |
3878 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
3879 | if (p->arg.lock_seqid == NULL) | |
2f74c0a0 | 3880 | goto out_free_seqid; |
a5d16a4d | 3881 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 3882 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 3883 | p->arg.lock_owner.id = lsp->ls_id.id; |
c1d51931 | 3884 | p->res.lock_seqid = p->arg.lock_seqid; |
5f7dbd5c | 3885 | p->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
a5d16a4d | 3886 | p->lsp = lsp; |
66179efe | 3887 | p->server = server; |
a5d16a4d TM |
3888 | atomic_inc(&lsp->ls_count); |
3889 | p->ctx = get_nfs_open_context(ctx); | |
3890 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3891 | return p; | |
2f74c0a0 TM |
3892 | out_free_seqid: |
3893 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
3894 | out_free: |
3895 | kfree(p); | |
3896 | return NULL; | |
3897 | } | |
3898 | ||
3899 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
3900 | { | |
3901 | struct nfs4_lockdata *data = calldata; | |
3902 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 3903 | |
3110ff80 | 3904 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
3905 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
3906 | return; | |
a5d16a4d TM |
3907 | /* Do we need to do an open_to_lock_owner? */ |
3908 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
3909 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
3910 | return; | |
a5d16a4d TM |
3911 | data->arg.open_stateid = &state->stateid; |
3912 | data->arg.new_lock_owner = 1; | |
c1d51931 | 3913 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
3914 | } else |
3915 | data->arg.new_lock_owner = 0; | |
26e976a8 | 3916 | data->timestamp = jiffies; |
66179efe AA |
3917 | if (nfs4_setup_sequence(data->server->nfs_client, &data->arg.seq_args, |
3918 | &data->res.seq_res, 1, task)) | |
3919 | return; | |
5138fde0 | 3920 | rpc_call_start(task); |
3110ff80 | 3921 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
3922 | } |
3923 | ||
3924 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) | |
3925 | { | |
3926 | struct nfs4_lockdata *data = calldata; | |
3927 | ||
3110ff80 | 3928 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 3929 | |
66179efe AA |
3930 | nfs4_sequence_done_free_slot(data->server, &data->res.seq_res, |
3931 | task->tk_status); | |
3932 | ||
a5d16a4d TM |
3933 | data->rpc_status = task->tk_status; |
3934 | if (RPC_ASSASSINATED(task)) | |
3935 | goto out; | |
3936 | if (data->arg.new_lock_owner != 0) { | |
a5d16a4d TM |
3937 | if (data->rpc_status == 0) |
3938 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
3939 | else | |
3940 | goto out; | |
3941 | } | |
3942 | if (data->rpc_status == 0) { | |
3943 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
3944 | sizeof(data->lsp->ls_stateid.data)); | |
3945 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 3946 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d | 3947 | } |
a5d16a4d | 3948 | out: |
3110ff80 | 3949 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
3950 | } |
3951 | ||
3952 | static void nfs4_lock_release(void *calldata) | |
3953 | { | |
3954 | struct nfs4_lockdata *data = calldata; | |
3955 | ||
3110ff80 | 3956 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 3957 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
3958 | if (data->cancelled != 0) { |
3959 | struct rpc_task *task; | |
3960 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
3961 | data->arg.lock_seqid); | |
3962 | if (!IS_ERR(task)) | |
e6b3c4db | 3963 | rpc_put_task(task); |
3110ff80 | 3964 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
3965 | } else |
3966 | nfs_free_seqid(data->arg.lock_seqid); | |
3967 | nfs4_put_lock_state(data->lsp); | |
3968 | put_nfs_open_context(data->ctx); | |
3969 | kfree(data); | |
3110ff80 | 3970 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
3971 | } |
3972 | ||
3973 | static const struct rpc_call_ops nfs4_lock_ops = { | |
3974 | .rpc_call_prepare = nfs4_lock_prepare, | |
3975 | .rpc_call_done = nfs4_lock_done, | |
3976 | .rpc_release = nfs4_lock_release, | |
3977 | }; | |
3978 | ||
3979 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim) | |
3980 | { | |
3981 | struct nfs4_lockdata *data; | |
3982 | struct rpc_task *task; | |
5138fde0 TM |
3983 | struct rpc_message msg = { |
3984 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
3985 | .rpc_cred = state->owner->so_cred, | |
3986 | }; | |
c970aa85 TM |
3987 | struct rpc_task_setup task_setup_data = { |
3988 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 3989 | .rpc_message = &msg, |
c970aa85 | 3990 | .callback_ops = &nfs4_lock_ops, |
101070ca | 3991 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3992 | .flags = RPC_TASK_ASYNC, |
3993 | }; | |
a5d16a4d TM |
3994 | int ret; |
3995 | ||
3110ff80 | 3996 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 3997 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
a5d16a4d TM |
3998 | fl->fl_u.nfs4_fl.owner); |
3999 | if (data == NULL) | |
4000 | return -ENOMEM; | |
4001 | if (IS_SETLKW(cmd)) | |
4002 | data->arg.block = 1; | |
4003 | if (reclaim != 0) | |
4004 | data->arg.reclaim = 1; | |
5138fde0 TM |
4005 | msg.rpc_argp = &data->arg, |
4006 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
4007 | task_setup_data.callback_data = data; |
4008 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4009 | if (IS_ERR(task)) |
a5d16a4d | 4010 | return PTR_ERR(task); |
a5d16a4d TM |
4011 | ret = nfs4_wait_for_completion_rpc_task(task); |
4012 | if (ret == 0) { | |
4013 | ret = data->rpc_status; | |
a5d16a4d TM |
4014 | } else |
4015 | data->cancelled = 1; | |
e6b3c4db | 4016 | rpc_put_task(task); |
3110ff80 | 4017 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4018 | return ret; |
1da177e4 LT |
4019 | } |
4020 | ||
4021 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4022 | { | |
202b50dc TM |
4023 | struct nfs_server *server = NFS_SERVER(state->inode); |
4024 | struct nfs4_exception exception = { }; | |
4025 | int err; | |
4026 | ||
4027 | do { | |
42a2d13e TM |
4028 | /* Cache the lock if possible... */ |
4029 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4030 | return 0; | |
202b50dc TM |
4031 | err = _nfs4_do_setlk(state, F_SETLK, request, 1); |
4032 | if (err != -NFS4ERR_DELAY) | |
4033 | break; | |
4034 | nfs4_handle_exception(server, err, &exception); | |
4035 | } while (exception.retry); | |
4036 | return err; | |
1da177e4 LT |
4037 | } |
4038 | ||
4039 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4040 | { | |
202b50dc TM |
4041 | struct nfs_server *server = NFS_SERVER(state->inode); |
4042 | struct nfs4_exception exception = { }; | |
4043 | int err; | |
4044 | ||
6bfc93ef TM |
4045 | err = nfs4_set_lock_state(state, request); |
4046 | if (err != 0) | |
4047 | return err; | |
202b50dc | 4048 | do { |
42a2d13e TM |
4049 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4050 | return 0; | |
202b50dc TM |
4051 | err = _nfs4_do_setlk(state, F_SETLK, request, 0); |
4052 | if (err != -NFS4ERR_DELAY) | |
4053 | break; | |
4054 | nfs4_handle_exception(server, err, &exception); | |
4055 | } while (exception.retry); | |
4056 | return err; | |
1da177e4 LT |
4057 | } |
4058 | ||
4059 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4060 | { | |
19e03c57 | 4061 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4062 | unsigned char fl_flags = request->fl_flags; |
1da177e4 LT |
4063 | int status; |
4064 | ||
6bfc93ef | 4065 | /* Is this a delegated open? */ |
6bfc93ef TM |
4066 | status = nfs4_set_lock_state(state, request); |
4067 | if (status != 0) | |
4068 | goto out; | |
01c3b861 TM |
4069 | request->fl_flags |= FL_ACCESS; |
4070 | status = do_vfs_lock(request->fl_file, request); | |
4071 | if (status < 0) | |
4072 | goto out; | |
19e03c57 | 4073 | down_read(&nfsi->rwsem); |
01c3b861 | 4074 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4075 | /* Yes: cache locks! */ |
01c3b861 | 4076 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4077 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4078 | status = do_vfs_lock(request->fl_file, request); | |
4079 | goto out_unlock; | |
01c3b861 | 4080 | } |
6bfc93ef TM |
4081 | status = _nfs4_do_setlk(state, cmd, request, 0); |
4082 | if (status != 0) | |
01c3b861 | 4083 | goto out_unlock; |
6bfc93ef | 4084 | /* Note: we always want to sleep here! */ |
01c3b861 | 4085 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4086 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4087 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4088 | out_unlock: |
19e03c57 | 4089 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4090 | out: |
4091 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4092 | return status; |
4093 | } | |
4094 | ||
4095 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4096 | { | |
4097 | struct nfs4_exception exception = { }; | |
4098 | int err; | |
4099 | ||
4100 | do { | |
965b5d67 TM |
4101 | err = _nfs4_proc_setlk(state, cmd, request); |
4102 | if (err == -NFS4ERR_DENIED) | |
4103 | err = -EAGAIN; | |
1da177e4 | 4104 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4105 | err, &exception); |
1da177e4 LT |
4106 | } while (exception.retry); |
4107 | return err; | |
4108 | } | |
4109 | ||
4110 | static int | |
4111 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4112 | { | |
4113 | struct nfs_open_context *ctx; | |
4114 | struct nfs4_state *state; | |
4115 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4116 | int status; | |
4117 | ||
4118 | /* verify open state */ | |
cd3758e3 | 4119 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4120 | state = ctx->state; |
4121 | ||
4122 | if (request->fl_start < 0 || request->fl_end < 0) | |
4123 | return -EINVAL; | |
4124 | ||
d953126a TM |
4125 | if (IS_GETLK(cmd)) { |
4126 | if (state != NULL) | |
4127 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4128 | return 0; | |
4129 | } | |
1da177e4 LT |
4130 | |
4131 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4132 | return -EINVAL; | |
4133 | ||
d953126a TM |
4134 | if (request->fl_type == F_UNLCK) { |
4135 | if (state != NULL) | |
4136 | return nfs4_proc_unlck(state, cmd, request); | |
4137 | return 0; | |
4138 | } | |
1da177e4 | 4139 | |
d953126a TM |
4140 | if (state == NULL) |
4141 | return -ENOLCK; | |
1da177e4 LT |
4142 | do { |
4143 | status = nfs4_proc_setlk(state, cmd, request); | |
4144 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4145 | break; | |
4146 | timeout = nfs4_set_lock_task_retry(timeout); | |
4147 | status = -ERESTARTSYS; | |
4148 | if (signalled()) | |
4149 | break; | |
4150 | } while(status < 0); | |
1da177e4 LT |
4151 | return status; |
4152 | } | |
4153 | ||
888e694c TM |
4154 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4155 | { | |
4156 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4157 | struct nfs4_exception exception = { }; | |
4158 | int err; | |
4159 | ||
4160 | err = nfs4_set_lock_state(state, fl); | |
4161 | if (err != 0) | |
4162 | goto out; | |
4163 | do { | |
4164 | err = _nfs4_do_setlk(state, F_SETLK, fl, 0); | |
d5122201 TM |
4165 | switch (err) { |
4166 | default: | |
4167 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4168 | __func__, err); | |
4169 | case 0: | |
965b5d67 | 4170 | case -ESTALE: |
d5122201 TM |
4171 | goto out; |
4172 | case -NFS4ERR_EXPIRED: | |
4173 | case -NFS4ERR_STALE_CLIENTID: | |
965b5d67 | 4174 | case -NFS4ERR_STALE_STATEID: |
d5122201 TM |
4175 | nfs4_schedule_state_recovery(server->nfs_client); |
4176 | goto out; | |
965b5d67 TM |
4177 | case -ERESTARTSYS: |
4178 | /* | |
4179 | * The show must go on: exit, but mark the | |
4180 | * stateid as needing recovery. | |
4181 | */ | |
4182 | case -NFS4ERR_ADMIN_REVOKED: | |
4183 | case -NFS4ERR_BAD_STATEID: | |
4184 | case -NFS4ERR_OPENMODE: | |
4185 | nfs4_state_mark_reclaim_nograce(server->nfs_client, state); | |
4186 | err = 0; | |
4187 | goto out; | |
4188 | case -ENOMEM: | |
4189 | case -NFS4ERR_DENIED: | |
4190 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4191 | err = 0; | |
4192 | goto out; | |
d5122201 TM |
4193 | case -NFS4ERR_DELAY: |
4194 | break; | |
4195 | } | |
888e694c TM |
4196 | err = nfs4_handle_exception(server, err, &exception); |
4197 | } while (exception.retry); | |
4198 | out: | |
4199 | return err; | |
4200 | } | |
6b3b5496 | 4201 | |
aa1870af BF |
4202 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4203 | ||
6b3b5496 BF |
4204 | int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf, |
4205 | size_t buflen, int flags) | |
4206 | { | |
4b580ee3 BF |
4207 | struct inode *inode = dentry->d_inode; |
4208 | ||
4209 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
4210 | return -EOPNOTSUPP; | |
4211 | ||
4b580ee3 | 4212 | return nfs4_proc_set_acl(inode, buf, buflen); |
6b3b5496 BF |
4213 | } |
4214 | ||
4215 | /* The getxattr man page suggests returning -ENODATA for unknown attributes, | |
4216 | * and that's what we'll do for e.g. user attributes that haven't been set. | |
4217 | * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported | |
4218 | * attributes in kernel-managed attribute namespaces. */ | |
4219 | ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf, | |
4220 | size_t buflen) | |
4221 | { | |
aa1870af BF |
4222 | struct inode *inode = dentry->d_inode; |
4223 | ||
4224 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
4225 | return -EOPNOTSUPP; | |
4226 | ||
4227 | return nfs4_proc_get_acl(inode, buf, buflen); | |
6b3b5496 BF |
4228 | } |
4229 | ||
4230 | ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen) | |
4231 | { | |
aa1870af | 4232 | size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1; |
6b3b5496 | 4233 | |
096455a2 BF |
4234 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4235 | return 0; | |
6b3b5496 BF |
4236 | if (buf && buflen < len) |
4237 | return -ERANGE; | |
4238 | if (buf) | |
aa1870af BF |
4239 | memcpy(buf, XATTR_NAME_NFSV4_ACL, len); |
4240 | return len; | |
6b3b5496 BF |
4241 | } |
4242 | ||
69aaaae1 TM |
4243 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4244 | { | |
4245 | if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) && | |
4246 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4247 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
4248 | return; | |
4249 | ||
4250 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4251 | NFS_ATTR_FATTR_NLINK; | |
4252 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4253 | fattr->nlink = 2; | |
4254 | } | |
4255 | ||
56659e99 | 4256 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4257 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4258 | { |
4259 | struct nfs_server *server = NFS_SERVER(dir); | |
4260 | u32 bitmask[2] = { | |
361e624f MN |
4261 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
4262 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
4263 | }; |
4264 | struct nfs4_fs_locations_arg args = { | |
4265 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4266 | .name = name, |
683b57b4 TM |
4267 | .page = page, |
4268 | .bitmask = bitmask, | |
4269 | }; | |
22958463 BH |
4270 | struct nfs4_fs_locations_res res = { |
4271 | .fs_locations = fs_locations, | |
4272 | }; | |
683b57b4 TM |
4273 | struct rpc_message msg = { |
4274 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4275 | .rpc_argp = &args, | |
22958463 | 4276 | .rpc_resp = &res, |
683b57b4 TM |
4277 | }; |
4278 | int status; | |
4279 | ||
3110ff80 | 4280 | dprintk("%s: start\n", __func__); |
c228fd3a | 4281 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4282 | fs_locations->server = server; |
830b8e33 | 4283 | fs_locations->nlocations = 0; |
cccef3b9 | 4284 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
69aaaae1 | 4285 | nfs_fixup_referral_attributes(&fs_locations->fattr); |
3110ff80 | 4286 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4287 | return status; |
4288 | } | |
4289 | ||
557134a3 | 4290 | #ifdef CONFIG_NFS_V4_1 |
99fe60d0 BH |
4291 | /* |
4292 | * nfs4_proc_exchange_id() | |
4293 | * | |
4294 | * Since the clientid has expired, all compounds using sessions | |
4295 | * associated with the stale clientid will be returning | |
4296 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4297 | * be in some phase of session reset. | |
4298 | */ | |
4299 | static int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
4300 | { | |
4301 | nfs4_verifier verifier; | |
4302 | struct nfs41_exchange_id_args args = { | |
4303 | .client = clp, | |
4304 | .flags = clp->cl_exchange_flags, | |
4305 | }; | |
4306 | struct nfs41_exchange_id_res res = { | |
4307 | .client = clp, | |
4308 | }; | |
4309 | int status; | |
4310 | struct rpc_message msg = { | |
4311 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4312 | .rpc_argp = &args, | |
4313 | .rpc_resp = &res, | |
4314 | .rpc_cred = cred, | |
4315 | }; | |
4316 | __be32 *p; | |
4317 | ||
4318 | dprintk("--> %s\n", __func__); | |
4319 | BUG_ON(clp == NULL); | |
a7b72103 | 4320 | |
99fe60d0 BH |
4321 | p = (u32 *)verifier.data; |
4322 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4323 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4324 | args.verifier = &verifier; | |
4325 | ||
4326 | while (1) { | |
4327 | args.id_len = scnprintf(args.id, sizeof(args.id), | |
4328 | "%s/%s %u", | |
4329 | clp->cl_ipaddr, | |
4330 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4331 | RPC_DISPLAY_ADDR), | |
4332 | clp->cl_id_uniquifier); | |
4333 | ||
4334 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
4335 | ||
4336 | if (status != NFS4ERR_CLID_INUSE) | |
4337 | break; | |
4338 | ||
4339 | if (signalled()) | |
4340 | break; | |
4341 | ||
4342 | if (++clp->cl_id_uniquifier == 0) | |
4343 | break; | |
4344 | } | |
4345 | ||
4346 | dprintk("<-- %s status= %d\n", __func__, status); | |
4347 | return status; | |
4348 | } | |
4349 | ||
2050f0cc AA |
4350 | struct nfs4_get_lease_time_data { |
4351 | struct nfs4_get_lease_time_args *args; | |
4352 | struct nfs4_get_lease_time_res *res; | |
4353 | struct nfs_client *clp; | |
4354 | }; | |
4355 | ||
4356 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4357 | void *calldata) | |
4358 | { | |
4359 | int ret; | |
4360 | struct nfs4_get_lease_time_data *data = | |
4361 | (struct nfs4_get_lease_time_data *)calldata; | |
4362 | ||
4363 | dprintk("--> %s\n", __func__); | |
4364 | /* just setup sequence, do not trigger session recovery | |
4365 | since we're invoked within one */ | |
4366 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
4367 | &data->args->la_seq_args, | |
4368 | &data->res->lr_seq_res, 0, task); | |
4369 | ||
4370 | BUG_ON(ret == -EAGAIN); | |
4371 | rpc_call_start(task); | |
4372 | dprintk("<-- %s\n", __func__); | |
4373 | } | |
4374 | ||
4375 | /* | |
4376 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4377 | * from sequence operation or clientid errors. | |
4378 | */ | |
4379 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4380 | { | |
4381 | struct nfs4_get_lease_time_data *data = | |
4382 | (struct nfs4_get_lease_time_data *)calldata; | |
4383 | ||
4384 | dprintk("--> %s\n", __func__); | |
4385 | nfs41_sequence_done(data->clp, &data->res->lr_seq_res, task->tk_status); | |
4386 | switch (task->tk_status) { | |
4387 | case -NFS4ERR_DELAY: | |
4388 | case -NFS4ERR_GRACE: | |
4389 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4390 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4391 | task->tk_status = 0; | |
eedc020e | 4392 | nfs4_restart_rpc(task, data->clp); |
2050f0cc AA |
4393 | return; |
4394 | } | |
4395 | nfs41_sequence_free_slot(data->clp, &data->res->lr_seq_res); | |
4396 | dprintk("<-- %s\n", __func__); | |
4397 | } | |
4398 | ||
4399 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4400 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4401 | .rpc_call_done = nfs4_get_lease_time_done, | |
4402 | }; | |
4403 | ||
4404 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4405 | { | |
4406 | struct rpc_task *task; | |
4407 | struct nfs4_get_lease_time_args args; | |
4408 | struct nfs4_get_lease_time_res res = { | |
4409 | .lr_fsinfo = fsinfo, | |
4410 | }; | |
4411 | struct nfs4_get_lease_time_data data = { | |
4412 | .args = &args, | |
4413 | .res = &res, | |
4414 | .clp = clp, | |
4415 | }; | |
4416 | struct rpc_message msg = { | |
4417 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4418 | .rpc_argp = &args, | |
4419 | .rpc_resp = &res, | |
4420 | }; | |
4421 | struct rpc_task_setup task_setup = { | |
4422 | .rpc_client = clp->cl_rpcclient, | |
4423 | .rpc_message = &msg, | |
4424 | .callback_ops = &nfs4_get_lease_time_ops, | |
4425 | .callback_data = &data | |
4426 | }; | |
4427 | int status; | |
4428 | ||
4429 | res.lr_seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; | |
4430 | dprintk("--> %s\n", __func__); | |
4431 | task = rpc_run_task(&task_setup); | |
4432 | ||
4433 | if (IS_ERR(task)) | |
4434 | status = PTR_ERR(task); | |
4435 | else { | |
4436 | status = task->tk_status; | |
4437 | rpc_put_task(task); | |
4438 | } | |
4439 | dprintk("<-- %s return %d\n", __func__, status); | |
4440 | ||
4441 | return status; | |
4442 | } | |
4443 | ||
b73dafa7 RL |
4444 | /* |
4445 | * Reset a slot table | |
4446 | */ | |
4447 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, int max_slots, | |
4448 | int old_max_slots, int ivalue) | |
ac72b7b3 | 4449 | { |
b73dafa7 | 4450 | int i; |
ac72b7b3 AA |
4451 | int ret = 0; |
4452 | ||
b73dafa7 | 4453 | dprintk("--> %s: max_reqs=%u, tbl %p\n", __func__, max_slots, tbl); |
ac72b7b3 | 4454 | |
b73dafa7 RL |
4455 | /* |
4456 | * Until we have dynamic slot table adjustment, insist | |
4457 | * upon the same slot table size | |
4458 | */ | |
ac72b7b3 AA |
4459 | if (max_slots != old_max_slots) { |
4460 | dprintk("%s reset slot table does't match old\n", | |
4461 | __func__); | |
4462 | ret = -EINVAL; /*XXX NFS4ERR_REQ_TOO_BIG ? */ | |
4463 | goto out; | |
4464 | } | |
4465 | spin_lock(&tbl->slot_tbl_lock); | |
4466 | for (i = 0; i < max_slots; ++i) | |
b73dafa7 | 4467 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
4468 | tbl->highest_used_slotid = -1; |
4469 | spin_unlock(&tbl->slot_tbl_lock); | |
4470 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4471 | tbl, tbl->slots, tbl->max_slots); | |
4472 | out: | |
4473 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4474 | return ret; | |
4475 | } | |
4476 | ||
b73dafa7 RL |
4477 | /* |
4478 | * Reset the forechannel and backchannel slot tables | |
4479 | */ | |
4480 | static int nfs4_reset_slot_tables(struct nfs4_session *session) | |
4481 | { | |
4482 | int status; | |
4483 | ||
4484 | status = nfs4_reset_slot_table(&session->fc_slot_table, | |
4485 | session->fc_attrs.max_reqs, | |
4486 | session->fc_slot_table.max_slots, | |
4487 | 1); | |
f8625a6a RL |
4488 | if (status) |
4489 | return status; | |
4490 | ||
4491 | status = nfs4_reset_slot_table(&session->bc_slot_table, | |
4492 | session->bc_attrs.max_reqs, | |
4493 | session->bc_slot_table.max_slots, | |
4494 | 0); | |
b73dafa7 RL |
4495 | return status; |
4496 | } | |
4497 | ||
f8625a6a RL |
4498 | /* Destroy the slot table */ |
4499 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
4500 | { | |
4501 | if (session->fc_slot_table.slots != NULL) { | |
4502 | kfree(session->fc_slot_table.slots); | |
4503 | session->fc_slot_table.slots = NULL; | |
4504 | } | |
4505 | if (session->bc_slot_table.slots != NULL) { | |
4506 | kfree(session->bc_slot_table.slots); | |
4507 | session->bc_slot_table.slots = NULL; | |
4508 | } | |
4509 | return; | |
4510 | } | |
4511 | ||
fc931582 AA |
4512 | /* |
4513 | * Initialize slot table | |
4514 | */ | |
050047ce RL |
4515 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
4516 | int max_slots, int ivalue) | |
fc931582 | 4517 | { |
050047ce | 4518 | int i; |
fc931582 AA |
4519 | struct nfs4_slot *slot; |
4520 | int ret = -ENOMEM; | |
4521 | ||
4522 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
4523 | ||
050047ce | 4524 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 AA |
4525 | |
4526 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_KERNEL); | |
4527 | if (!slot) | |
4528 | goto out; | |
4529 | for (i = 0; i < max_slots; ++i) | |
050047ce | 4530 | slot[i].seq_nr = ivalue; |
fc931582 AA |
4531 | ret = 0; |
4532 | ||
4533 | spin_lock(&tbl->slot_tbl_lock); | |
4534 | if (tbl->slots != NULL) { | |
4535 | spin_unlock(&tbl->slot_tbl_lock); | |
4536 | dprintk("%s: slot table already initialized. tbl=%p slots=%p\n", | |
4537 | __func__, tbl, tbl->slots); | |
4538 | WARN_ON(1); | |
4539 | goto out_free; | |
4540 | } | |
4541 | tbl->max_slots = max_slots; | |
4542 | tbl->slots = slot; | |
4543 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
4544 | spin_unlock(&tbl->slot_tbl_lock); | |
4545 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4546 | tbl, tbl->slots, tbl->max_slots); | |
4547 | out: | |
4548 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4549 | return ret; | |
050047ce | 4550 | |
fc931582 AA |
4551 | out_free: |
4552 | kfree(slot); | |
4553 | goto out; | |
4554 | } | |
4555 | ||
050047ce RL |
4556 | /* |
4557 | * Initialize the forechannel and backchannel tables | |
4558 | */ | |
4559 | static int nfs4_init_slot_tables(struct nfs4_session *session) | |
4560 | { | |
4561 | int status; | |
4562 | ||
4563 | status = nfs4_init_slot_table(&session->fc_slot_table, | |
4564 | session->fc_attrs.max_reqs, 1); | |
f8625a6a RL |
4565 | if (status) |
4566 | return status; | |
050047ce | 4567 | |
f8625a6a RL |
4568 | status = nfs4_init_slot_table(&session->bc_slot_table, |
4569 | session->bc_attrs.max_reqs, 0); | |
4570 | if (status) | |
4571 | nfs4_destroy_slot_tables(session); | |
4572 | ||
4573 | return status; | |
557134a3 AA |
4574 | } |
4575 | ||
4576 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
4577 | { | |
4578 | struct nfs4_session *session; | |
4579 | struct nfs4_slot_table *tbl; | |
4580 | ||
4581 | session = kzalloc(sizeof(struct nfs4_session), GFP_KERNEL); | |
4582 | if (!session) | |
4583 | return NULL; | |
76db6d95 AA |
4584 | |
4585 | set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state); | |
4586 | /* | |
4587 | * The create session reply races with the server back | |
4588 | * channel probe. Mark the client NFS_CS_SESSION_INITING | |
4589 | * so that the client back channel can find the | |
4590 | * nfs_client struct | |
4591 | */ | |
4592 | clp->cl_cons_state = NFS_CS_SESSION_INITING; | |
4593 | ||
557134a3 AA |
4594 | tbl = &session->fc_slot_table; |
4595 | spin_lock_init(&tbl->slot_tbl_lock); | |
f8625a6a RL |
4596 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
4597 | ||
4598 | tbl = &session->bc_slot_table; | |
4599 | spin_lock_init(&tbl->slot_tbl_lock); | |
4600 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
4601 | ||
557134a3 AA |
4602 | session->clp = clp; |
4603 | return session; | |
4604 | } | |
4605 | ||
4606 | void nfs4_destroy_session(struct nfs4_session *session) | |
4607 | { | |
5a0ffe54 AA |
4608 | nfs4_proc_destroy_session(session); |
4609 | dprintk("%s Destroy backchannel for xprt %p\n", | |
4610 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
4611 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
4612 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 4613 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
4614 | kfree(session); |
4615 | } | |
4616 | ||
fc931582 AA |
4617 | /* |
4618 | * Initialize the values to be used by the client in CREATE_SESSION | |
4619 | * If nfs4_init_session set the fore channel request and response sizes, | |
4620 | * use them. | |
4621 | * | |
4622 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
4623 | * always set csa_cachethis to FALSE because the current implementation | |
4624 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
4625 | */ | |
4626 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
4627 | { | |
4628 | struct nfs4_session *session = args->client->cl_session; | |
4629 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
4630 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
4631 | ||
4632 | if (mxrqst_sz == 0) | |
4633 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
4634 | if (mxresp_sz == 0) | |
4635 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
4636 | /* Fore channel attributes */ | |
4637 | args->fc_attrs.headerpadsz = 0; | |
4638 | args->fc_attrs.max_rqst_sz = mxrqst_sz; | |
4639 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
4640 | args->fc_attrs.max_resp_sz_cached = mxresp_sz; | |
4641 | args->fc_attrs.max_ops = NFS4_MAX_OPS; | |
4642 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
4643 | ||
4644 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
4645 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
4646 | __func__, | |
4647 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
4648 | args->fc_attrs.max_resp_sz_cached, args->fc_attrs.max_ops, | |
4649 | args->fc_attrs.max_reqs); | |
4650 | ||
4651 | /* Back channel attributes */ | |
4652 | args->bc_attrs.headerpadsz = 0; | |
4653 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; | |
4654 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
4655 | args->bc_attrs.max_resp_sz_cached = 0; | |
4656 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
4657 | args->bc_attrs.max_reqs = 1; | |
4658 | ||
4659 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
4660 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
4661 | __func__, | |
4662 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
4663 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
4664 | args->bc_attrs.max_reqs); | |
4665 | } | |
4666 | ||
8d35301d AA |
4667 | static int _verify_channel_attr(char *chan, char *attr_name, u32 sent, u32 rcvd) |
4668 | { | |
4669 | if (rcvd <= sent) | |
4670 | return 0; | |
4671 | printk(KERN_WARNING "%s: Session INVALID: %s channel %s increased. " | |
4672 | "sent=%u rcvd=%u\n", __func__, chan, attr_name, sent, rcvd); | |
4673 | return -EINVAL; | |
4674 | } | |
4675 | ||
4676 | #define _verify_fore_channel_attr(_name_) \ | |
4677 | _verify_channel_attr("fore", #_name_, \ | |
4678 | args->fc_attrs._name_, \ | |
4679 | session->fc_attrs._name_) | |
4680 | ||
4681 | #define _verify_back_channel_attr(_name_) \ | |
4682 | _verify_channel_attr("back", #_name_, \ | |
4683 | args->bc_attrs._name_, \ | |
4684 | session->bc_attrs._name_) | |
4685 | ||
4686 | /* | |
4687 | * The server is not allowed to increase the fore channel header pad size, | |
4688 | * maximum response size, or maximum number of operations. | |
4689 | * | |
4690 | * The back channel attributes are only negotiatied down: We send what the | |
4691 | * (back channel) server insists upon. | |
4692 | */ | |
4693 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, | |
4694 | struct nfs4_session *session) | |
4695 | { | |
4696 | int ret = 0; | |
4697 | ||
4698 | ret |= _verify_fore_channel_attr(headerpadsz); | |
4699 | ret |= _verify_fore_channel_attr(max_resp_sz); | |
4700 | ret |= _verify_fore_channel_attr(max_ops); | |
4701 | ||
4702 | ret |= _verify_back_channel_attr(headerpadsz); | |
4703 | ret |= _verify_back_channel_attr(max_rqst_sz); | |
4704 | ret |= _verify_back_channel_attr(max_resp_sz); | |
4705 | ret |= _verify_back_channel_attr(max_resp_sz_cached); | |
4706 | ret |= _verify_back_channel_attr(max_ops); | |
4707 | ret |= _verify_back_channel_attr(max_reqs); | |
4708 | ||
4709 | return ret; | |
4710 | } | |
4711 | ||
fc931582 AA |
4712 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
4713 | { | |
4714 | struct nfs4_session *session = clp->cl_session; | |
4715 | struct nfs41_create_session_args args = { | |
4716 | .client = clp, | |
4717 | .cb_program = NFS4_CALLBACK, | |
4718 | }; | |
4719 | struct nfs41_create_session_res res = { | |
4720 | .client = clp, | |
4721 | }; | |
4722 | struct rpc_message msg = { | |
4723 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
4724 | .rpc_argp = &args, | |
4725 | .rpc_resp = &res, | |
4726 | }; | |
4727 | int status; | |
4728 | ||
4729 | nfs4_init_channel_attrs(&args); | |
0f91421e | 4730 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 AA |
4731 | |
4732 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
4733 | ||
8d35301d AA |
4734 | if (!status) |
4735 | /* Verify the session's negotiated channel_attrs values */ | |
4736 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
4737 | if (!status) { |
4738 | /* Increment the clientid slot sequence id */ | |
4739 | clp->cl_seqid++; | |
4740 | } | |
4741 | ||
4742 | return status; | |
4743 | } | |
4744 | ||
4745 | /* | |
4746 | * Issues a CREATE_SESSION operation to the server. | |
4747 | * It is the responsibility of the caller to verify the session is | |
4748 | * expired before calling this routine. | |
4749 | */ | |
ac72b7b3 | 4750 | int nfs4_proc_create_session(struct nfs_client *clp, int reset) |
fc931582 AA |
4751 | { |
4752 | int status; | |
4753 | unsigned *ptr; | |
4754 | struct nfs_fsinfo fsinfo; | |
4755 | struct nfs4_session *session = clp->cl_session; | |
4756 | ||
4757 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
4758 | ||
4759 | status = _nfs4_proc_create_session(clp); | |
4760 | if (status) | |
4761 | goto out; | |
4762 | ||
ac72b7b3 AA |
4763 | /* Init or reset the fore channel */ |
4764 | if (reset) | |
b73dafa7 | 4765 | status = nfs4_reset_slot_tables(session); |
ac72b7b3 | 4766 | else |
050047ce | 4767 | status = nfs4_init_slot_tables(session); |
fc931582 AA |
4768 | dprintk("fore channel slot table initialization returned %d\n", status); |
4769 | if (status) | |
4770 | goto out; | |
4771 | ||
4772 | ptr = (unsigned *)&session->sess_id.data[0]; | |
4773 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
4774 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
4775 | ||
ac72b7b3 AA |
4776 | if (reset) |
4777 | /* Lease time is aleady set */ | |
4778 | goto out; | |
4779 | ||
fc931582 AA |
4780 | /* Get the lease time */ |
4781 | status = nfs4_proc_get_lease_time(clp, &fsinfo); | |
4782 | if (status == 0) { | |
4783 | /* Update lease time and schedule renewal */ | |
4784 | spin_lock(&clp->cl_lock); | |
4785 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4786 | clp->cl_last_renewal = jiffies; | |
4787 | clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); | |
4788 | spin_unlock(&clp->cl_lock); | |
4789 | ||
4790 | nfs4_schedule_state_renewal(clp); | |
4791 | } | |
4792 | out: | |
4793 | dprintk("<-- %s\n", __func__); | |
4794 | return status; | |
4795 | } | |
4796 | ||
0f3e66c6 AA |
4797 | /* |
4798 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
4799 | * The caller must serialize access to this routine. | |
4800 | */ | |
4801 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
4802 | { | |
4803 | int status = 0; | |
4804 | struct rpc_message msg; | |
4805 | ||
4806 | dprintk("--> nfs4_proc_destroy_session\n"); | |
4807 | ||
4808 | /* session is still being setup */ | |
4809 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
4810 | return status; | |
4811 | ||
4812 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
4813 | msg.rpc_argp = session; | |
4814 | msg.rpc_resp = NULL; | |
4815 | msg.rpc_cred = NULL; | |
4816 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
4817 | ||
4818 | if (status) | |
4819 | printk(KERN_WARNING | |
4820 | "Got error %d from the server on DESTROY_SESSION. " | |
4821 | "Session has been destroyed regardless...\n", status); | |
4822 | ||
4823 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
4824 | return status; | |
4825 | } | |
4826 | ||
fccba804 TM |
4827 | int nfs4_init_session(struct nfs_server *server) |
4828 | { | |
4829 | struct nfs_client *clp = server->nfs_client; | |
4830 | int ret; | |
4831 | ||
4832 | if (!nfs4_has_session(clp)) | |
4833 | return 0; | |
4834 | ||
4835 | clp->cl_session->fc_attrs.max_rqst_sz = server->wsize; | |
4836 | clp->cl_session->fc_attrs.max_resp_sz = server->rsize; | |
4837 | ret = nfs4_recover_expired_lease(server); | |
4838 | if (!ret) | |
4839 | ret = nfs4_check_client_ready(clp); | |
4840 | return ret; | |
4841 | } | |
4842 | ||
fc01cea9 AA |
4843 | /* |
4844 | * Renew the cl_session lease. | |
4845 | */ | |
4846 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
4847 | { | |
4848 | struct nfs4_sequence_args args; | |
4849 | struct nfs4_sequence_res res; | |
4850 | ||
4851 | struct rpc_message msg = { | |
4852 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
4853 | .rpc_argp = &args, | |
4854 | .rpc_resp = &res, | |
4855 | .rpc_cred = cred, | |
4856 | }; | |
4857 | ||
4858 | args.sa_cache_this = 0; | |
4859 | ||
4860 | return nfs4_call_sync_sequence(clp, clp->cl_rpcclient, &msg, &args, | |
4861 | &res, 0); | |
4862 | } | |
4863 | ||
4864 | void nfs41_sequence_call_done(struct rpc_task *task, void *data) | |
4865 | { | |
4866 | struct nfs_client *clp = (struct nfs_client *)data; | |
4867 | ||
4868 | nfs41_sequence_done(clp, task->tk_msg.rpc_resp, task->tk_status); | |
4869 | ||
4870 | if (task->tk_status < 0) { | |
4871 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
4872 | ||
4873 | if (_nfs4_async_handle_error(task, NULL, clp, NULL) | |
4874 | == -EAGAIN) { | |
eedc020e | 4875 | nfs4_restart_rpc(task, clp); |
fc01cea9 AA |
4876 | return; |
4877 | } | |
4878 | } | |
4879 | nfs41_sequence_free_slot(clp, task->tk_msg.rpc_resp); | |
4880 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); | |
4881 | ||
fc01cea9 AA |
4882 | kfree(task->tk_msg.rpc_argp); |
4883 | kfree(task->tk_msg.rpc_resp); | |
4884 | ||
4885 | dprintk("<-- %s\n", __func__); | |
4886 | } | |
4887 | ||
4888 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
4889 | { | |
4890 | struct nfs_client *clp; | |
4891 | struct nfs4_sequence_args *args; | |
4892 | struct nfs4_sequence_res *res; | |
4893 | ||
4894 | clp = (struct nfs_client *)data; | |
4895 | args = task->tk_msg.rpc_argp; | |
4896 | res = task->tk_msg.rpc_resp; | |
4897 | ||
4898 | if (nfs4_setup_sequence(clp, args, res, 0, task)) | |
4899 | return; | |
4900 | rpc_call_start(task); | |
4901 | } | |
4902 | ||
4903 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
4904 | .rpc_call_done = nfs41_sequence_call_done, | |
4905 | .rpc_call_prepare = nfs41_sequence_prepare, | |
4906 | }; | |
4907 | ||
4908 | static int nfs41_proc_async_sequence(struct nfs_client *clp, | |
4909 | struct rpc_cred *cred) | |
4910 | { | |
4911 | struct nfs4_sequence_args *args; | |
4912 | struct nfs4_sequence_res *res; | |
4913 | struct rpc_message msg = { | |
4914 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
4915 | .rpc_cred = cred, | |
4916 | }; | |
4917 | ||
4918 | args = kzalloc(sizeof(*args), GFP_KERNEL); | |
4919 | if (!args) | |
4920 | return -ENOMEM; | |
4921 | res = kzalloc(sizeof(*res), GFP_KERNEL); | |
4922 | if (!res) { | |
4923 | kfree(args); | |
4924 | return -ENOMEM; | |
4925 | } | |
4926 | res->sr_slotid = NFS4_MAX_SLOT_TABLE; | |
4927 | msg.rpc_argp = args; | |
4928 | msg.rpc_resp = res; | |
4929 | ||
4930 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, | |
4931 | &nfs41_sequence_ops, (void *)clp); | |
4932 | } | |
4933 | ||
557134a3 AA |
4934 | #endif /* CONFIG_NFS_V4_1 */ |
4935 | ||
591d71cb | 4936 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 4937 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 4938 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
4939 | .recover_open = nfs4_open_reclaim, |
4940 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 4941 | .establish_clid = nfs4_init_clientid, |
90a16617 | 4942 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
4943 | }; |
4944 | ||
591d71cb AA |
4945 | #if defined(CONFIG_NFS_V4_1) |
4946 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
4947 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
4948 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
4949 | .recover_open = nfs4_open_reclaim, | |
4950 | .recover_lock = nfs4_lock_reclaim, | |
4951 | .establish_clid = nfs4_proc_exchange_id, | |
b4b82607 | 4952 | .get_clid_cred = nfs4_get_exchange_id_cred, |
591d71cb AA |
4953 | }; |
4954 | #endif /* CONFIG_NFS_V4_1 */ | |
4955 | ||
4956 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
4957 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
4958 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
4959 | .recover_open = nfs4_open_expired, | |
4960 | .recover_lock = nfs4_lock_expired, | |
4961 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 4962 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
4963 | }; |
4964 | ||
4965 | #if defined(CONFIG_NFS_V4_1) | |
4966 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 4967 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 4968 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
1da177e4 LT |
4969 | .recover_open = nfs4_open_expired, |
4970 | .recover_lock = nfs4_lock_expired, | |
591d71cb | 4971 | .establish_clid = nfs4_proc_exchange_id, |
b4b82607 | 4972 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 4973 | }; |
591d71cb | 4974 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 4975 | |
29fba38b BH |
4976 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
4977 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 4978 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 4979 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
4980 | }; |
4981 | ||
4982 | #if defined(CONFIG_NFS_V4_1) | |
4983 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
4984 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 4985 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 4986 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
4987 | }; |
4988 | #endif | |
4989 | ||
4990 | /* | |
4991 | * Per minor version reboot and network partition recovery ops | |
4992 | */ | |
4993 | ||
591d71cb AA |
4994 | struct nfs4_state_recovery_ops *nfs4_reboot_recovery_ops[] = { |
4995 | &nfs40_reboot_recovery_ops, | |
4996 | #if defined(CONFIG_NFS_V4_1) | |
4997 | &nfs41_reboot_recovery_ops, | |
4998 | #endif | |
4999 | }; | |
5000 | ||
5001 | struct nfs4_state_recovery_ops *nfs4_nograce_recovery_ops[] = { | |
5002 | &nfs40_nograce_recovery_ops, | |
5003 | #if defined(CONFIG_NFS_V4_1) | |
5004 | &nfs41_nograce_recovery_ops, | |
5005 | #endif | |
5006 | }; | |
5007 | ||
29fba38b BH |
5008 | struct nfs4_state_maintenance_ops *nfs4_state_renewal_ops[] = { |
5009 | &nfs40_state_renewal_ops, | |
5010 | #if defined(CONFIG_NFS_V4_1) | |
5011 | &nfs41_state_renewal_ops, | |
5012 | #endif | |
5013 | }; | |
5014 | ||
92e1d5be | 5015 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
5016 | .permission = nfs_permission, |
5017 | .getattr = nfs_getattr, | |
5018 | .setattr = nfs_setattr, | |
5019 | .getxattr = nfs4_getxattr, | |
5020 | .setxattr = nfs4_setxattr, | |
5021 | .listxattr = nfs4_listxattr, | |
5022 | }; | |
5023 | ||
509de811 | 5024 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
5025 | .version = 4, /* protocol version */ |
5026 | .dentry_ops = &nfs4_dentry_operations, | |
5027 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 5028 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
5029 | .getroot = nfs4_proc_get_root, |
5030 | .getattr = nfs4_proc_getattr, | |
5031 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 5032 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
5033 | .lookup = nfs4_proc_lookup, |
5034 | .access = nfs4_proc_access, | |
5035 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
5036 | .create = nfs4_proc_create, |
5037 | .remove = nfs4_proc_remove, | |
5038 | .unlink_setup = nfs4_proc_unlink_setup, | |
5039 | .unlink_done = nfs4_proc_unlink_done, | |
5040 | .rename = nfs4_proc_rename, | |
5041 | .link = nfs4_proc_link, | |
5042 | .symlink = nfs4_proc_symlink, | |
5043 | .mkdir = nfs4_proc_mkdir, | |
5044 | .rmdir = nfs4_proc_remove, | |
5045 | .readdir = nfs4_proc_readdir, | |
5046 | .mknod = nfs4_proc_mknod, | |
5047 | .statfs = nfs4_proc_statfs, | |
5048 | .fsinfo = nfs4_proc_fsinfo, | |
5049 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 5050 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
5051 | .decode_dirent = nfs4_decode_dirent, |
5052 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 5053 | .read_done = nfs4_read_done, |
1da177e4 | 5054 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 5055 | .write_done = nfs4_write_done, |
1da177e4 | 5056 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 5057 | .commit_done = nfs4_commit_done, |
1da177e4 | 5058 | .lock = nfs4_proc_lock, |
e50a1c2e | 5059 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 5060 | .close_context = nfs4_close_context, |
1da177e4 LT |
5061 | }; |
5062 | ||
5063 | /* | |
5064 | * Local variables: | |
5065 | * c-basic-offset: 8 | |
5066 | * End: | |
5067 | */ |