Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1c6dcbe5 AS |
2 | /* |
3 | * Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com> | |
4 | */ | |
5 | #include <linux/fs.h> | |
6 | #include <linux/sunrpc/sched.h> | |
7 | #include <linux/nfs.h> | |
8 | #include <linux/nfs3.h> | |
9 | #include <linux/nfs4.h> | |
10 | #include <linux/nfs_xdr.h> | |
11 | #include <linux/nfs_fs.h> | |
12 | #include "nfs4_fs.h" | |
13 | #include "nfs42.h" | |
1b4a4bd8 PT |
14 | #include "iostat.h" |
15 | #include "pnfs.h" | |
efc6f4aa | 16 | #include "nfs4session.h" |
1b4a4bd8 PT |
17 | #include "internal.h" |
18 | ||
291e1b94 | 19 | #define NFSDBG_FACILITY NFSDBG_PROC |
c975c209 | 20 | static int nfs42_do_offload_cancel_async(struct file *dst, nfs4_stateid *std); |
1c6dcbe5 | 21 | |
f4ac1674 | 22 | static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep, |
4bdf87eb | 23 | struct nfs_lock_context *lock, loff_t offset, loff_t len) |
f4ac1674 AS |
24 | { |
25 | struct inode *inode = file_inode(filep); | |
9a51940b | 26 | struct nfs_server *server = NFS_SERVER(inode); |
f4ac1674 AS |
27 | struct nfs42_falloc_args args = { |
28 | .falloc_fh = NFS_FH(inode), | |
29 | .falloc_offset = offset, | |
30 | .falloc_length = len, | |
9a51940b AS |
31 | .falloc_bitmask = server->cache_consistency_bitmask, |
32 | }; | |
33 | struct nfs42_falloc_res res = { | |
34 | .falloc_server = server, | |
f4ac1674 | 35 | }; |
f4ac1674 AS |
36 | int status; |
37 | ||
38 | msg->rpc_argp = &args; | |
39 | msg->rpc_resp = &res; | |
40 | ||
4bdf87eb CH |
41 | status = nfs4_set_rw_stateid(&args.falloc_stateid, lock->open_context, |
42 | lock, FMODE_WRITE); | |
f4ac1674 AS |
43 | if (status) |
44 | return status; | |
45 | ||
9a51940b AS |
46 | res.falloc_fattr = nfs_alloc_fattr(); |
47 | if (!res.falloc_fattr) | |
48 | return -ENOMEM; | |
49 | ||
50 | status = nfs4_call_sync(server->client, server, msg, | |
51 | &args.seq_args, &res.seq_res, 0); | |
52 | if (status == 0) | |
53 | status = nfs_post_op_update_inode(inode, res.falloc_fattr); | |
54 | ||
55 | kfree(res.falloc_fattr); | |
56 | return status; | |
f4ac1674 AS |
57 | } |
58 | ||
59 | static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep, | |
60 | loff_t offset, loff_t len) | |
61 | { | |
62 | struct nfs_server *server = NFS_SERVER(file_inode(filep)); | |
63 | struct nfs4_exception exception = { }; | |
4bdf87eb | 64 | struct nfs_lock_context *lock; |
f4ac1674 AS |
65 | int err; |
66 | ||
4bdf87eb CH |
67 | lock = nfs_get_lock_context(nfs_file_open_context(filep)); |
68 | if (IS_ERR(lock)) | |
69 | return PTR_ERR(lock); | |
70 | ||
71 | exception.inode = file_inode(filep); | |
72 | exception.state = lock->open_context->state; | |
73 | ||
f4ac1674 | 74 | do { |
4bdf87eb CH |
75 | err = _nfs42_proc_fallocate(msg, filep, lock, offset, len); |
76 | if (err == -ENOTSUPP) { | |
77 | err = -EOPNOTSUPP; | |
78 | break; | |
79 | } | |
f4ac1674 AS |
80 | err = nfs4_handle_exception(server, err, &exception); |
81 | } while (exception.retry); | |
82 | ||
4bdf87eb | 83 | nfs_put_lock_context(lock); |
f4ac1674 AS |
84 | return err; |
85 | } | |
86 | ||
87 | int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len) | |
88 | { | |
89 | struct rpc_message msg = { | |
90 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE], | |
91 | }; | |
92 | struct inode *inode = file_inode(filep); | |
93 | int err; | |
94 | ||
95 | if (!nfs_server_capable(inode, NFS_CAP_ALLOCATE)) | |
96 | return -EOPNOTSUPP; | |
97 | ||
5955102c | 98 | inode_lock(inode); |
f830f7dd | 99 | |
f4ac1674 AS |
100 | err = nfs42_proc_fallocate(&msg, filep, offset, len); |
101 | if (err == -EOPNOTSUPP) | |
102 | NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE; | |
f830f7dd | 103 | |
5955102c | 104 | inode_unlock(inode); |
f4ac1674 AS |
105 | return err; |
106 | } | |
107 | ||
624bd5b7 AS |
108 | int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len) |
109 | { | |
110 | struct rpc_message msg = { | |
111 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DEALLOCATE], | |
112 | }; | |
113 | struct inode *inode = file_inode(filep); | |
114 | int err; | |
115 | ||
116 | if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE)) | |
117 | return -EOPNOTSUPP; | |
118 | ||
5955102c | 119 | inode_lock(inode); |
1e564d3d TM |
120 | err = nfs_sync_inode(inode); |
121 | if (err) | |
122 | goto out_unlock; | |
f830f7dd | 123 | |
624bd5b7 | 124 | err = nfs42_proc_fallocate(&msg, filep, offset, len); |
9a51940b AS |
125 | if (err == 0) |
126 | truncate_pagecache_range(inode, offset, (offset + len) -1); | |
624bd5b7 AS |
127 | if (err == -EOPNOTSUPP) |
128 | NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE; | |
1e564d3d | 129 | out_unlock: |
5955102c | 130 | inode_unlock(inode); |
624bd5b7 AS |
131 | return err; |
132 | } | |
133 | ||
62164f31 OK |
134 | static int handle_async_copy(struct nfs42_copy_res *res, |
135 | struct nfs_server *server, | |
136 | struct file *src, | |
137 | struct file *dst, | |
138 | nfs4_stateid *src_stateid) | |
139 | { | |
99f2c555 | 140 | struct nfs4_copy_state *copy, *tmp_copy; |
62164f31 | 141 | int status = NFS4_OK; |
bc0c9079 | 142 | bool found_pending = false; |
e4648aa4 | 143 | struct nfs_open_context *ctx = nfs_file_open_context(dst); |
bc0c9079 | 144 | |
99f2c555 OK |
145 | copy = kzalloc(sizeof(struct nfs4_copy_state), GFP_NOFS); |
146 | if (!copy) | |
147 | return -ENOMEM; | |
148 | ||
bc0c9079 | 149 | spin_lock(&server->nfs_client->cl_lock); |
99f2c555 | 150 | list_for_each_entry(tmp_copy, &server->nfs_client->pending_cb_stateids, |
bc0c9079 | 151 | copies) { |
99f2c555 | 152 | if (memcmp(&res->write_res.stateid, &tmp_copy->stateid, |
bc0c9079 OK |
153 | NFS4_STATEID_SIZE)) |
154 | continue; | |
155 | found_pending = true; | |
99f2c555 | 156 | list_del(&tmp_copy->copies); |
bc0c9079 OK |
157 | break; |
158 | } | |
159 | if (found_pending) { | |
160 | spin_unlock(&server->nfs_client->cl_lock); | |
99f2c555 OK |
161 | kfree(copy); |
162 | copy = tmp_copy; | |
bc0c9079 OK |
163 | goto out; |
164 | } | |
62164f31 | 165 | |
62164f31 OK |
166 | memcpy(©->stateid, &res->write_res.stateid, NFS4_STATEID_SIZE); |
167 | init_completion(©->completion); | |
e4648aa4 | 168 | copy->parent_state = ctx->state; |
62164f31 | 169 | |
62164f31 OK |
170 | list_add_tail(©->copies, &server->ss_copies); |
171 | spin_unlock(&server->nfs_client->cl_lock); | |
172 | ||
c975c209 | 173 | status = wait_for_completion_interruptible(©->completion); |
62164f31 OK |
174 | spin_lock(&server->nfs_client->cl_lock); |
175 | list_del_init(©->copies); | |
176 | spin_unlock(&server->nfs_client->cl_lock); | |
c975c209 | 177 | if (status == -ERESTARTSYS) { |
e4648aa4 OK |
178 | goto out_cancel; |
179 | } else if (copy->flags) { | |
180 | status = -EAGAIN; | |
181 | goto out_cancel; | |
c975c209 | 182 | } |
bc0c9079 | 183 | out: |
62164f31 OK |
184 | res->write_res.count = copy->count; |
185 | memcpy(&res->write_res.verifier, ©->verf, sizeof(copy->verf)); | |
186 | status = -copy->error; | |
187 | ||
e4648aa4 OK |
188 | kfree(copy); |
189 | return status; | |
190 | out_cancel: | |
191 | nfs42_do_offload_cancel_async(dst, ©->stateid); | |
62164f31 OK |
192 | kfree(copy); |
193 | return status; | |
194 | } | |
195 | ||
6b8d84e2 OK |
196 | static int process_copy_commit(struct file *dst, loff_t pos_dst, |
197 | struct nfs42_copy_res *res) | |
198 | { | |
199 | struct nfs_commitres cres; | |
200 | int status = -ENOMEM; | |
201 | ||
202 | cres.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS); | |
203 | if (!cres.verf) | |
204 | goto out; | |
205 | ||
206 | status = nfs4_proc_commit(dst, pos_dst, res->write_res.count, &cres); | |
207 | if (status) | |
208 | goto out_free; | |
209 | if (nfs_write_verifier_cmp(&res->write_res.verifier.verifier, | |
210 | &cres.verf->verifier)) { | |
211 | dprintk("commit verf differs from copy verf\n"); | |
212 | status = -EAGAIN; | |
213 | } | |
214 | out_free: | |
215 | kfree(cres.verf); | |
216 | out: | |
217 | return status; | |
218 | } | |
219 | ||
9d8cacbf | 220 | static ssize_t _nfs42_proc_copy(struct file *src, |
2e72448b | 221 | struct nfs_lock_context *src_lock, |
9d8cacbf | 222 | struct file *dst, |
2e72448b | 223 | struct nfs_lock_context *dst_lock, |
9d8cacbf TM |
224 | struct nfs42_copy_args *args, |
225 | struct nfs42_copy_res *res) | |
2e72448b | 226 | { |
2e72448b AS |
227 | struct rpc_message msg = { |
228 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY], | |
9d8cacbf TM |
229 | .rpc_argp = args, |
230 | .rpc_resp = res, | |
2e72448b AS |
231 | }; |
232 | struct inode *dst_inode = file_inode(dst); | |
233 | struct nfs_server *server = NFS_SERVER(dst_inode); | |
9d8cacbf TM |
234 | loff_t pos_src = args->src_pos; |
235 | loff_t pos_dst = args->dst_pos; | |
236 | size_t count = args->count; | |
1ee48bdd | 237 | ssize_t status; |
2e72448b | 238 | |
9d8cacbf | 239 | status = nfs4_set_rw_stateid(&args->src_stateid, src_lock->open_context, |
2e72448b AS |
240 | src_lock, FMODE_READ); |
241 | if (status) | |
242 | return status; | |
243 | ||
837bb1d7 TM |
244 | status = nfs_filemap_write_and_wait_range(file_inode(src)->i_mapping, |
245 | pos_src, pos_src + (loff_t)count - 1); | |
246 | if (status) | |
247 | return status; | |
248 | ||
9d8cacbf | 249 | status = nfs4_set_rw_stateid(&args->dst_stateid, dst_lock->open_context, |
2e72448b AS |
250 | dst_lock, FMODE_WRITE); |
251 | if (status) | |
252 | return status; | |
837bb1d7 TM |
253 | |
254 | status = nfs_sync_inode(dst_inode); | |
255 | if (status) | |
256 | return status; | |
2e72448b | 257 | |
62164f31 OK |
258 | res->commit_res.verf = NULL; |
259 | if (args->sync) { | |
260 | res->commit_res.verf = | |
261 | kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS); | |
262 | if (!res->commit_res.verf) | |
263 | return -ENOMEM; | |
264 | } | |
e4648aa4 OK |
265 | set_bit(NFS_CLNT_DST_SSC_COPY_STATE, |
266 | &dst_lock->open_context->state->flags); | |
267 | ||
2e72448b | 268 | status = nfs4_call_sync(server->client, server, &msg, |
9d8cacbf | 269 | &args->seq_args, &res->seq_res, 0); |
2e72448b AS |
270 | if (status == -ENOTSUPP) |
271 | server->caps &= ~NFS_CAP_COPY; | |
272 | if (status) | |
e0926934 | 273 | goto out; |
2e72448b | 274 | |
62164f31 OK |
275 | if (args->sync && |
276 | nfs_write_verifier_cmp(&res->write_res.verifier.verifier, | |
e0926934 OK |
277 | &res->commit_res.verf->verifier)) { |
278 | status = -EAGAIN; | |
279 | goto out; | |
2e72448b AS |
280 | } |
281 | ||
62164f31 OK |
282 | if (!res->synchronous) { |
283 | status = handle_async_copy(res, server, src, dst, | |
284 | &args->src_stateid); | |
285 | if (status) | |
286 | return status; | |
287 | } | |
288 | ||
6b8d84e2 OK |
289 | if ((!res->synchronous || !args->sync) && |
290 | res->write_res.verifier.committed != NFS_FILE_SYNC) { | |
291 | status = process_copy_commit(dst, pos_dst, res); | |
292 | if (status) | |
293 | return status; | |
294 | } | |
295 | ||
2e72448b | 296 | truncate_pagecache_range(dst_inode, pos_dst, |
9d8cacbf | 297 | pos_dst + res->write_res.count); |
2e72448b | 298 | |
e0926934 OK |
299 | status = res->write_res.count; |
300 | out: | |
62164f31 OK |
301 | if (args->sync) |
302 | kfree(res->commit_res.verf); | |
e0926934 | 303 | return status; |
2e72448b AS |
304 | } |
305 | ||
306 | ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src, | |
307 | struct file *dst, loff_t pos_dst, | |
308 | size_t count) | |
309 | { | |
310 | struct nfs_server *server = NFS_SERVER(file_inode(dst)); | |
311 | struct nfs_lock_context *src_lock; | |
312 | struct nfs_lock_context *dst_lock; | |
9d8cacbf TM |
313 | struct nfs42_copy_args args = { |
314 | .src_fh = NFS_FH(file_inode(src)), | |
315 | .src_pos = pos_src, | |
316 | .dst_fh = NFS_FH(file_inode(dst)), | |
317 | .dst_pos = pos_dst, | |
318 | .count = count, | |
62164f31 | 319 | .sync = false, |
9d8cacbf TM |
320 | }; |
321 | struct nfs42_copy_res res; | |
322 | struct nfs4_exception src_exception = { | |
323 | .inode = file_inode(src), | |
324 | .stateid = &args.src_stateid, | |
325 | }; | |
326 | struct nfs4_exception dst_exception = { | |
327 | .inode = file_inode(dst), | |
328 | .stateid = &args.dst_stateid, | |
329 | }; | |
2e72448b AS |
330 | ssize_t err, err2; |
331 | ||
2e72448b AS |
332 | src_lock = nfs_get_lock_context(nfs_file_open_context(src)); |
333 | if (IS_ERR(src_lock)) | |
334 | return PTR_ERR(src_lock); | |
335 | ||
2e72448b AS |
336 | src_exception.state = src_lock->open_context->state; |
337 | ||
338 | dst_lock = nfs_get_lock_context(nfs_file_open_context(dst)); | |
339 | if (IS_ERR(dst_lock)) { | |
340 | err = PTR_ERR(dst_lock); | |
341 | goto out_put_src_lock; | |
342 | } | |
343 | ||
2e72448b AS |
344 | dst_exception.state = dst_lock->open_context->state; |
345 | ||
346 | do { | |
ea8ea737 | 347 | inode_lock(file_inode(dst)); |
9d8cacbf TM |
348 | err = _nfs42_proc_copy(src, src_lock, |
349 | dst, dst_lock, | |
350 | &args, &res); | |
ea8ea737 | 351 | inode_unlock(file_inode(dst)); |
2e72448b | 352 | |
9d8cacbf TM |
353 | if (err >= 0) |
354 | break; | |
2e72448b AS |
355 | if (err == -ENOTSUPP) { |
356 | err = -EOPNOTSUPP; | |
357 | break; | |
539f57b3 OK |
358 | } else if (err == -EAGAIN) { |
359 | dst_exception.retry = 1; | |
360 | continue; | |
361 | } else if (err == -NFS4ERR_OFFLOAD_NO_REQS && !args.sync) { | |
362 | args.sync = true; | |
e0926934 OK |
363 | dst_exception.retry = 1; |
364 | continue; | |
2e72448b AS |
365 | } |
366 | ||
367 | err2 = nfs4_handle_exception(server, err, &src_exception); | |
368 | err = nfs4_handle_exception(server, err, &dst_exception); | |
369 | if (!err) | |
370 | err = err2; | |
371 | } while (src_exception.retry || dst_exception.retry); | |
372 | ||
373 | nfs_put_lock_context(dst_lock); | |
374 | out_put_src_lock: | |
375 | nfs_put_lock_context(src_lock); | |
376 | return err; | |
377 | } | |
378 | ||
c975c209 OK |
379 | struct nfs42_offloadcancel_data { |
380 | struct nfs_server *seq_server; | |
381 | struct nfs42_offload_status_args args; | |
382 | struct nfs42_offload_status_res res; | |
383 | }; | |
384 | ||
385 | static void nfs42_offload_cancel_prepare(struct rpc_task *task, void *calldata) | |
386 | { | |
387 | struct nfs42_offloadcancel_data *data = calldata; | |
388 | ||
389 | nfs4_setup_sequence(data->seq_server->nfs_client, | |
390 | &data->args.osa_seq_args, | |
391 | &data->res.osr_seq_res, task); | |
392 | } | |
393 | ||
394 | static void nfs42_offload_cancel_done(struct rpc_task *task, void *calldata) | |
395 | { | |
396 | struct nfs42_offloadcancel_data *data = calldata; | |
397 | ||
398 | nfs41_sequence_done(task, &data->res.osr_seq_res); | |
399 | if (task->tk_status && | |
400 | nfs4_async_handle_error(task, data->seq_server, NULL, | |
401 | NULL) == -EAGAIN) | |
402 | rpc_restart_call_prepare(task); | |
403 | } | |
404 | ||
405 | static void nfs42_free_offloadcancel_data(void *data) | |
406 | { | |
407 | kfree(data); | |
408 | } | |
409 | ||
410 | static const struct rpc_call_ops nfs42_offload_cancel_ops = { | |
411 | .rpc_call_prepare = nfs42_offload_cancel_prepare, | |
412 | .rpc_call_done = nfs42_offload_cancel_done, | |
413 | .rpc_release = nfs42_free_offloadcancel_data, | |
414 | }; | |
415 | ||
416 | static int nfs42_do_offload_cancel_async(struct file *dst, | |
417 | nfs4_stateid *stateid) | |
418 | { | |
419 | struct nfs_server *dst_server = NFS_SERVER(file_inode(dst)); | |
420 | struct nfs42_offloadcancel_data *data = NULL; | |
421 | struct nfs_open_context *ctx = nfs_file_open_context(dst); | |
422 | struct rpc_task *task; | |
423 | struct rpc_message msg = { | |
424 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OFFLOAD_CANCEL], | |
425 | .rpc_cred = ctx->cred, | |
426 | }; | |
427 | struct rpc_task_setup task_setup_data = { | |
428 | .rpc_client = dst_server->client, | |
429 | .rpc_message = &msg, | |
430 | .callback_ops = &nfs42_offload_cancel_ops, | |
431 | .workqueue = nfsiod_workqueue, | |
432 | .flags = RPC_TASK_ASYNC, | |
433 | }; | |
434 | int status; | |
435 | ||
436 | if (!(dst_server->caps & NFS_CAP_OFFLOAD_CANCEL)) | |
437 | return -EOPNOTSUPP; | |
438 | ||
439 | data = kzalloc(sizeof(struct nfs42_offloadcancel_data), GFP_NOFS); | |
440 | if (data == NULL) | |
441 | return -ENOMEM; | |
442 | ||
443 | data->seq_server = dst_server; | |
444 | data->args.osa_src_fh = NFS_FH(file_inode(dst)); | |
445 | memcpy(&data->args.osa_stateid, stateid, | |
446 | sizeof(data->args.osa_stateid)); | |
447 | msg.rpc_argp = &data->args; | |
448 | msg.rpc_resp = &data->res; | |
449 | task_setup_data.callback_data = data; | |
450 | nfs4_init_sequence(&data->args.osa_seq_args, &data->res.osr_seq_res, | |
451 | 1, 0); | |
452 | task = rpc_run_task(&task_setup_data); | |
453 | if (IS_ERR(task)) | |
454 | return PTR_ERR(task); | |
455 | status = rpc_wait_for_completion_task(task); | |
456 | if (status == -ENOTSUPP) | |
457 | dst_server->caps &= ~NFS_CAP_OFFLOAD_CANCEL; | |
458 | rpc_put_task(task); | |
459 | return status; | |
460 | } | |
461 | ||
4bdf87eb CH |
462 | static loff_t _nfs42_proc_llseek(struct file *filep, |
463 | struct nfs_lock_context *lock, loff_t offset, int whence) | |
1c6dcbe5 AS |
464 | { |
465 | struct inode *inode = file_inode(filep); | |
466 | struct nfs42_seek_args args = { | |
467 | .sa_fh = NFS_FH(inode), | |
468 | .sa_offset = offset, | |
469 | .sa_what = (whence == SEEK_HOLE) ? | |
470 | NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA, | |
471 | }; | |
472 | struct nfs42_seek_res res; | |
473 | struct rpc_message msg = { | |
474 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK], | |
475 | .rpc_argp = &args, | |
476 | .rpc_resp = &res, | |
477 | }; | |
478 | struct nfs_server *server = NFS_SERVER(inode); | |
479 | int status; | |
480 | ||
878ffa9f | 481 | if (!nfs_server_capable(inode, NFS_CAP_SEEK)) |
1c6dcbe5 AS |
482 | return -ENOTSUPP; |
483 | ||
4bdf87eb CH |
484 | status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context, |
485 | lock, FMODE_READ); | |
1c6dcbe5 AS |
486 | if (status) |
487 | return status; | |
488 | ||
e95fc4a0 TM |
489 | status = nfs_filemap_write_and_wait_range(inode->i_mapping, |
490 | offset, LLONG_MAX); | |
491 | if (status) | |
492 | return status; | |
493 | ||
1c6dcbe5 AS |
494 | status = nfs4_call_sync(server->client, server, &msg, |
495 | &args.seq_args, &res.seq_res, 0); | |
496 | if (status == -ENOTSUPP) | |
497 | server->caps &= ~NFS_CAP_SEEK; | |
498 | if (status) | |
499 | return status; | |
500 | ||
501 | return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes); | |
502 | } | |
be3a5d23 | 503 | |
bdcc2cd1 BF |
504 | loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence) |
505 | { | |
506 | struct nfs_server *server = NFS_SERVER(file_inode(filep)); | |
507 | struct nfs4_exception exception = { }; | |
4bdf87eb | 508 | struct nfs_lock_context *lock; |
306a5549 | 509 | loff_t err; |
bdcc2cd1 | 510 | |
4bdf87eb CH |
511 | lock = nfs_get_lock_context(nfs_file_open_context(filep)); |
512 | if (IS_ERR(lock)) | |
513 | return PTR_ERR(lock); | |
514 | ||
515 | exception.inode = file_inode(filep); | |
516 | exception.state = lock->open_context->state; | |
517 | ||
bdcc2cd1 | 518 | do { |
4bdf87eb | 519 | err = _nfs42_proc_llseek(filep, lock, offset, whence); |
306a5549 BF |
520 | if (err >= 0) |
521 | break; | |
4bdf87eb CH |
522 | if (err == -ENOTSUPP) { |
523 | err = -EOPNOTSUPP; | |
524 | break; | |
525 | } | |
bdcc2cd1 BF |
526 | err = nfs4_handle_exception(server, err, &exception); |
527 | } while (exception.retry); | |
528 | ||
4bdf87eb | 529 | nfs_put_lock_context(lock); |
bdcc2cd1 BF |
530 | return err; |
531 | } | |
532 | ||
533 | ||
1b4a4bd8 PT |
534 | static void |
535 | nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata) | |
536 | { | |
537 | struct nfs42_layoutstat_data *data = calldata; | |
9a0fe867 TM |
538 | struct inode *inode = data->inode; |
539 | struct nfs_server *server = NFS_SERVER(inode); | |
540 | struct pnfs_layout_hdr *lo; | |
1b4a4bd8 | 541 | |
9a0fe867 TM |
542 | spin_lock(&inode->i_lock); |
543 | lo = NFS_I(inode)->layout; | |
544 | if (!pnfs_layout_is_valid(lo)) { | |
545 | spin_unlock(&inode->i_lock); | |
546 | rpc_exit(task, 0); | |
547 | return; | |
548 | } | |
549 | nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid); | |
550 | spin_unlock(&inode->i_lock); | |
6de7e12f AS |
551 | nfs4_setup_sequence(server->nfs_client, &data->args.seq_args, |
552 | &data->res.seq_res, task); | |
1b4a4bd8 PT |
553 | } |
554 | ||
555 | static void | |
556 | nfs42_layoutstat_done(struct rpc_task *task, void *calldata) | |
557 | { | |
558 | struct nfs42_layoutstat_data *data = calldata; | |
68d264cf PT |
559 | struct inode *inode = data->inode; |
560 | struct pnfs_layout_hdr *lo; | |
1b4a4bd8 PT |
561 | |
562 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
563 | return; | |
564 | ||
6c5a0d89 TM |
565 | switch (task->tk_status) { |
566 | case 0: | |
567 | break; | |
cf61eb26 TM |
568 | case -NFS4ERR_BADHANDLE: |
569 | case -ESTALE: | |
570 | pnfs_destroy_layout(NFS_I(inode)); | |
571 | break; | |
68d264cf | 572 | case -NFS4ERR_EXPIRED: |
206b3bb5 TM |
573 | case -NFS4ERR_ADMIN_REVOKED: |
574 | case -NFS4ERR_DELEG_REVOKED: | |
68d264cf | 575 | case -NFS4ERR_STALE_STATEID: |
68d264cf PT |
576 | case -NFS4ERR_BAD_STATEID: |
577 | spin_lock(&inode->i_lock); | |
578 | lo = NFS_I(inode)->layout; | |
9a0fe867 TM |
579 | if (pnfs_layout_is_valid(lo) && |
580 | nfs4_stateid_match(&data->args.stateid, | |
68d264cf PT |
581 | &lo->plh_stateid)) { |
582 | LIST_HEAD(head); | |
583 | ||
584 | /* | |
585 | * Mark the bad layout state as invalid, then retry | |
586 | * with the current stateid. | |
587 | */ | |
5f46be04 | 588 | pnfs_mark_layout_stateid_invalid(lo, &head); |
68d264cf PT |
589 | spin_unlock(&inode->i_lock); |
590 | pnfs_free_lseg_list(&head); | |
1f18b82c | 591 | nfs_commit_inode(inode, 0); |
68d264cf PT |
592 | } else |
593 | spin_unlock(&inode->i_lock); | |
594 | break; | |
9a0fe867 TM |
595 | case -NFS4ERR_OLD_STATEID: |
596 | spin_lock(&inode->i_lock); | |
597 | lo = NFS_I(inode)->layout; | |
598 | if (pnfs_layout_is_valid(lo) && | |
599 | nfs4_stateid_match_other(&data->args.stateid, | |
600 | &lo->plh_stateid)) { | |
601 | /* Do we need to delay before resending? */ | |
602 | if (!nfs4_stateid_is_newer(&lo->plh_stateid, | |
603 | &data->args.stateid)) | |
604 | rpc_delay(task, HZ); | |
605 | rpc_restart_call_prepare(task); | |
606 | } | |
607 | spin_unlock(&inode->i_lock); | |
608 | break; | |
6c5a0d89 TM |
609 | case -ENOTSUPP: |
610 | case -EOPNOTSUPP: | |
68d264cf | 611 | NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS; |
6c5a0d89 | 612 | } |
1b4a4bd8 PT |
613 | } |
614 | ||
615 | static void | |
616 | nfs42_layoutstat_release(void *calldata) | |
617 | { | |
618 | struct nfs42_layoutstat_data *data = calldata; | |
422c93c8 TM |
619 | struct nfs42_layoutstat_devinfo *devinfo = data->args.devinfo; |
620 | int i; | |
8733408d | 621 | |
422c93c8 TM |
622 | for (i = 0; i < data->args.num_dev; i++) { |
623 | if (devinfo[i].ld_private.ops && devinfo[i].ld_private.ops->free) | |
624 | devinfo[i].ld_private.ops->free(&devinfo[i].ld_private); | |
625 | } | |
1b4a4bd8 PT |
626 | |
627 | pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout); | |
1bfe3b25 PT |
628 | smp_mb__before_atomic(); |
629 | clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags); | |
630 | smp_mb__after_atomic(); | |
1b4a4bd8 PT |
631 | nfs_iput_and_deactive(data->inode); |
632 | kfree(data->args.devinfo); | |
633 | kfree(data); | |
634 | } | |
635 | ||
be3a5d23 | 636 | static const struct rpc_call_ops nfs42_layoutstat_ops = { |
1b4a4bd8 PT |
637 | .rpc_call_prepare = nfs42_layoutstat_prepare, |
638 | .rpc_call_done = nfs42_layoutstat_done, | |
639 | .rpc_release = nfs42_layoutstat_release, | |
be3a5d23 TM |
640 | }; |
641 | ||
642 | int nfs42_proc_layoutstats_generic(struct nfs_server *server, | |
643 | struct nfs42_layoutstat_data *data) | |
644 | { | |
645 | struct rpc_message msg = { | |
646 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS], | |
647 | .rpc_argp = &data->args, | |
648 | .rpc_resp = &data->res, | |
649 | }; | |
650 | struct rpc_task_setup task_setup = { | |
651 | .rpc_client = server->client, | |
652 | .rpc_message = &msg, | |
653 | .callback_ops = &nfs42_layoutstat_ops, | |
654 | .callback_data = data, | |
655 | .flags = RPC_TASK_ASYNC, | |
656 | }; | |
657 | struct rpc_task *task; | |
658 | ||
1b4a4bd8 PT |
659 | data->inode = nfs_igrab_and_active(data->args.inode); |
660 | if (!data->inode) { | |
661 | nfs42_layoutstat_release(data); | |
662 | return -EAGAIN; | |
663 | } | |
fba83f34 | 664 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0); |
be3a5d23 TM |
665 | task = rpc_run_task(&task_setup); |
666 | if (IS_ERR(task)) | |
667 | return PTR_ERR(task); | |
3f807e5a | 668 | rpc_put_task(task); |
be3a5d23 TM |
669 | return 0; |
670 | } | |
e5341f3a | 671 | |
3eb86093 TM |
672 | static struct nfs42_layouterror_data * |
673 | nfs42_alloc_layouterror_data(struct pnfs_layout_segment *lseg, gfp_t gfp_flags) | |
674 | { | |
675 | struct nfs42_layouterror_data *data; | |
676 | struct inode *inode = lseg->pls_layout->plh_inode; | |
677 | ||
678 | data = kzalloc(sizeof(*data), gfp_flags); | |
679 | if (data) { | |
680 | data->args.inode = data->inode = nfs_igrab_and_active(inode); | |
681 | if (data->inode) { | |
682 | data->lseg = pnfs_get_lseg(lseg); | |
683 | if (data->lseg) | |
684 | return data; | |
685 | nfs_iput_and_deactive(data->inode); | |
686 | } | |
687 | kfree(data); | |
688 | } | |
689 | return NULL; | |
690 | } | |
691 | ||
692 | static void | |
693 | nfs42_free_layouterror_data(struct nfs42_layouterror_data *data) | |
694 | { | |
695 | pnfs_put_lseg(data->lseg); | |
696 | nfs_iput_and_deactive(data->inode); | |
697 | kfree(data); | |
698 | } | |
699 | ||
700 | static void | |
701 | nfs42_layouterror_prepare(struct rpc_task *task, void *calldata) | |
702 | { | |
703 | struct nfs42_layouterror_data *data = calldata; | |
704 | struct inode *inode = data->inode; | |
705 | struct nfs_server *server = NFS_SERVER(inode); | |
706 | struct pnfs_layout_hdr *lo = data->lseg->pls_layout; | |
707 | unsigned i; | |
708 | ||
709 | spin_lock(&inode->i_lock); | |
710 | if (!pnfs_layout_is_valid(lo)) { | |
711 | spin_unlock(&inode->i_lock); | |
712 | rpc_exit(task, 0); | |
713 | return; | |
714 | } | |
715 | for (i = 0; i < data->args.num_errors; i++) | |
716 | nfs4_stateid_copy(&data->args.errors[i].stateid, | |
717 | &lo->plh_stateid); | |
718 | spin_unlock(&inode->i_lock); | |
719 | nfs4_setup_sequence(server->nfs_client, &data->args.seq_args, | |
720 | &data->res.seq_res, task); | |
721 | } | |
722 | ||
723 | static void | |
724 | nfs42_layouterror_done(struct rpc_task *task, void *calldata) | |
725 | { | |
726 | struct nfs42_layouterror_data *data = calldata; | |
727 | struct inode *inode = data->inode; | |
728 | struct pnfs_layout_hdr *lo = data->lseg->pls_layout; | |
729 | ||
730 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
731 | return; | |
732 | ||
733 | switch (task->tk_status) { | |
734 | case 0: | |
735 | break; | |
736 | case -NFS4ERR_BADHANDLE: | |
737 | case -ESTALE: | |
738 | pnfs_destroy_layout(NFS_I(inode)); | |
739 | break; | |
740 | case -NFS4ERR_EXPIRED: | |
741 | case -NFS4ERR_ADMIN_REVOKED: | |
742 | case -NFS4ERR_DELEG_REVOKED: | |
743 | case -NFS4ERR_STALE_STATEID: | |
744 | case -NFS4ERR_BAD_STATEID: | |
745 | spin_lock(&inode->i_lock); | |
746 | if (pnfs_layout_is_valid(lo) && | |
747 | nfs4_stateid_match(&data->args.errors[0].stateid, | |
748 | &lo->plh_stateid)) { | |
749 | LIST_HEAD(head); | |
750 | ||
751 | /* | |
752 | * Mark the bad layout state as invalid, then retry | |
753 | * with the current stateid. | |
754 | */ | |
755 | pnfs_mark_layout_stateid_invalid(lo, &head); | |
756 | spin_unlock(&inode->i_lock); | |
757 | pnfs_free_lseg_list(&head); | |
758 | nfs_commit_inode(inode, 0); | |
759 | } else | |
760 | spin_unlock(&inode->i_lock); | |
761 | break; | |
762 | case -NFS4ERR_OLD_STATEID: | |
763 | spin_lock(&inode->i_lock); | |
764 | if (pnfs_layout_is_valid(lo) && | |
765 | nfs4_stateid_match_other(&data->args.errors[0].stateid, | |
766 | &lo->plh_stateid)) { | |
767 | /* Do we need to delay before resending? */ | |
768 | if (!nfs4_stateid_is_newer(&lo->plh_stateid, | |
769 | &data->args.errors[0].stateid)) | |
770 | rpc_delay(task, HZ); | |
771 | rpc_restart_call_prepare(task); | |
772 | } | |
773 | spin_unlock(&inode->i_lock); | |
774 | break; | |
775 | case -ENOTSUPP: | |
776 | case -EOPNOTSUPP: | |
777 | NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTERROR; | |
778 | } | |
779 | } | |
780 | ||
781 | static void | |
782 | nfs42_layouterror_release(void *calldata) | |
783 | { | |
784 | struct nfs42_layouterror_data *data = calldata; | |
785 | ||
786 | nfs42_free_layouterror_data(data); | |
787 | } | |
788 | ||
789 | static const struct rpc_call_ops nfs42_layouterror_ops = { | |
790 | .rpc_call_prepare = nfs42_layouterror_prepare, | |
791 | .rpc_call_done = nfs42_layouterror_done, | |
792 | .rpc_release = nfs42_layouterror_release, | |
793 | }; | |
794 | ||
795 | int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg, | |
796 | const struct nfs42_layout_error *errors, size_t n) | |
797 | { | |
798 | struct inode *inode = lseg->pls_layout->plh_inode; | |
799 | struct nfs42_layouterror_data *data; | |
800 | struct rpc_task *task; | |
801 | struct rpc_message msg = { | |
802 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTERROR], | |
803 | }; | |
804 | struct rpc_task_setup task_setup = { | |
805 | .rpc_message = &msg, | |
806 | .callback_ops = &nfs42_layouterror_ops, | |
807 | .flags = RPC_TASK_ASYNC, | |
808 | }; | |
809 | unsigned int i; | |
810 | ||
811 | if (!nfs_server_capable(inode, NFS_CAP_LAYOUTERROR)) | |
812 | return -EOPNOTSUPP; | |
813 | if (n > NFS42_LAYOUTERROR_MAX) | |
814 | return -EINVAL; | |
815 | data = nfs42_alloc_layouterror_data(lseg, GFP_NOFS); | |
816 | if (!data) | |
817 | return -ENOMEM; | |
818 | for (i = 0; i < n; i++) { | |
819 | data->args.errors[i] = errors[i]; | |
820 | data->args.num_errors++; | |
821 | data->res.num_errors++; | |
822 | } | |
823 | msg.rpc_argp = &data->args; | |
824 | msg.rpc_resp = &data->res; | |
825 | task_setup.callback_data = data; | |
826 | task_setup.rpc_client = NFS_SERVER(inode)->client; | |
827 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0); | |
828 | task = rpc_run_task(&task_setup); | |
829 | if (IS_ERR(task)) | |
830 | return PTR_ERR(task); | |
831 | rpc_put_task(task); | |
832 | return 0; | |
833 | } | |
834 | EXPORT_SYMBOL_GPL(nfs42_proc_layouterror); | |
835 | ||
e5341f3a | 836 | static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f, |
4bdf87eb CH |
837 | struct file *dst_f, struct nfs_lock_context *src_lock, |
838 | struct nfs_lock_context *dst_lock, loff_t src_offset, | |
839 | loff_t dst_offset, loff_t count) | |
e5341f3a PT |
840 | { |
841 | struct inode *src_inode = file_inode(src_f); | |
842 | struct inode *dst_inode = file_inode(dst_f); | |
843 | struct nfs_server *server = NFS_SERVER(dst_inode); | |
844 | struct nfs42_clone_args args = { | |
845 | .src_fh = NFS_FH(src_inode), | |
846 | .dst_fh = NFS_FH(dst_inode), | |
847 | .src_offset = src_offset, | |
848 | .dst_offset = dst_offset, | |
9494b2ce | 849 | .count = count, |
e5341f3a PT |
850 | .dst_bitmask = server->cache_consistency_bitmask, |
851 | }; | |
852 | struct nfs42_clone_res res = { | |
853 | .server = server, | |
854 | }; | |
855 | int status; | |
856 | ||
857 | msg->rpc_argp = &args; | |
858 | msg->rpc_resp = &res; | |
859 | ||
4bdf87eb CH |
860 | status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context, |
861 | src_lock, FMODE_READ); | |
e5341f3a PT |
862 | if (status) |
863 | return status; | |
864 | ||
4bdf87eb CH |
865 | status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context, |
866 | dst_lock, FMODE_WRITE); | |
e5341f3a PT |
867 | if (status) |
868 | return status; | |
869 | ||
870 | res.dst_fattr = nfs_alloc_fattr(); | |
871 | if (!res.dst_fattr) | |
872 | return -ENOMEM; | |
873 | ||
874 | status = nfs4_call_sync(server->client, server, msg, | |
875 | &args.seq_args, &res.seq_res, 0); | |
876 | if (status == 0) | |
877 | status = nfs_post_op_update_inode(dst_inode, res.dst_fattr); | |
878 | ||
879 | kfree(res.dst_fattr); | |
880 | return status; | |
881 | } | |
882 | ||
883 | int nfs42_proc_clone(struct file *src_f, struct file *dst_f, | |
884 | loff_t src_offset, loff_t dst_offset, loff_t count) | |
885 | { | |
886 | struct rpc_message msg = { | |
887 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE], | |
888 | }; | |
889 | struct inode *inode = file_inode(src_f); | |
890 | struct nfs_server *server = NFS_SERVER(file_inode(src_f)); | |
4bdf87eb CH |
891 | struct nfs_lock_context *src_lock; |
892 | struct nfs_lock_context *dst_lock; | |
893 | struct nfs4_exception src_exception = { }; | |
894 | struct nfs4_exception dst_exception = { }; | |
895 | int err, err2; | |
e5341f3a PT |
896 | |
897 | if (!nfs_server_capable(inode, NFS_CAP_CLONE)) | |
898 | return -EOPNOTSUPP; | |
899 | ||
4bdf87eb CH |
900 | src_lock = nfs_get_lock_context(nfs_file_open_context(src_f)); |
901 | if (IS_ERR(src_lock)) | |
902 | return PTR_ERR(src_lock); | |
903 | ||
904 | src_exception.inode = file_inode(src_f); | |
905 | src_exception.state = src_lock->open_context->state; | |
906 | ||
907 | dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f)); | |
908 | if (IS_ERR(dst_lock)) { | |
909 | err = PTR_ERR(dst_lock); | |
910 | goto out_put_src_lock; | |
911 | } | |
912 | ||
913 | dst_exception.inode = file_inode(dst_f); | |
914 | dst_exception.state = dst_lock->open_context->state; | |
915 | ||
e5341f3a | 916 | do { |
4bdf87eb CH |
917 | err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock, |
918 | src_offset, dst_offset, count); | |
e5341f3a PT |
919 | if (err == -ENOTSUPP || err == -EOPNOTSUPP) { |
920 | NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE; | |
4bdf87eb CH |
921 | err = -EOPNOTSUPP; |
922 | break; | |
e5341f3a | 923 | } |
e5341f3a | 924 | |
4bdf87eb CH |
925 | err2 = nfs4_handle_exception(server, err, &src_exception); |
926 | err = nfs4_handle_exception(server, err, &dst_exception); | |
927 | if (!err) | |
928 | err = err2; | |
929 | } while (src_exception.retry || dst_exception.retry); | |
e5341f3a | 930 | |
4bdf87eb CH |
931 | nfs_put_lock_context(dst_lock); |
932 | out_put_src_lock: | |
933 | nfs_put_lock_context(src_lock); | |
934 | return err; | |
e5341f3a | 935 | } |