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