Commit | Line | Data |
---|---|---|
1c6dcbe5 AS |
1 | /* |
2 | * Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com> | |
3 | */ | |
4 | #include <linux/fs.h> | |
5 | #include <linux/sunrpc/sched.h> | |
6 | #include <linux/nfs.h> | |
7 | #include <linux/nfs3.h> | |
8 | #include <linux/nfs4.h> | |
9 | #include <linux/nfs_xdr.h> | |
10 | #include <linux/nfs_fs.h> | |
11 | #include "nfs4_fs.h" | |
12 | #include "nfs42.h" | |
1b4a4bd8 PT |
13 | #include "iostat.h" |
14 | #include "pnfs.h" | |
15 | #include "internal.h" | |
16 | ||
291e1b94 | 17 | #define NFSDBG_FACILITY NFSDBG_PROC |
1c6dcbe5 | 18 | |
f4ac1674 | 19 | static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep, |
4bdf87eb | 20 | struct nfs_lock_context *lock, loff_t offset, loff_t len) |
f4ac1674 AS |
21 | { |
22 | struct inode *inode = file_inode(filep); | |
9a51940b | 23 | struct nfs_server *server = NFS_SERVER(inode); |
f4ac1674 AS |
24 | struct nfs42_falloc_args args = { |
25 | .falloc_fh = NFS_FH(inode), | |
26 | .falloc_offset = offset, | |
27 | .falloc_length = len, | |
9a51940b AS |
28 | .falloc_bitmask = server->cache_consistency_bitmask, |
29 | }; | |
30 | struct nfs42_falloc_res res = { | |
31 | .falloc_server = server, | |
f4ac1674 | 32 | }; |
f4ac1674 AS |
33 | int status; |
34 | ||
35 | msg->rpc_argp = &args; | |
36 | msg->rpc_resp = &res; | |
37 | ||
4bdf87eb CH |
38 | status = nfs4_set_rw_stateid(&args.falloc_stateid, lock->open_context, |
39 | lock, FMODE_WRITE); | |
f4ac1674 AS |
40 | if (status) |
41 | return status; | |
42 | ||
9a51940b AS |
43 | res.falloc_fattr = nfs_alloc_fattr(); |
44 | if (!res.falloc_fattr) | |
45 | return -ENOMEM; | |
46 | ||
47 | status = nfs4_call_sync(server->client, server, msg, | |
48 | &args.seq_args, &res.seq_res, 0); | |
49 | if (status == 0) | |
50 | status = nfs_post_op_update_inode(inode, res.falloc_fattr); | |
51 | ||
52 | kfree(res.falloc_fattr); | |
53 | return status; | |
f4ac1674 AS |
54 | } |
55 | ||
56 | static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep, | |
57 | loff_t offset, loff_t len) | |
58 | { | |
59 | struct nfs_server *server = NFS_SERVER(file_inode(filep)); | |
60 | struct nfs4_exception exception = { }; | |
4bdf87eb | 61 | struct nfs_lock_context *lock; |
f4ac1674 AS |
62 | int err; |
63 | ||
4bdf87eb CH |
64 | lock = nfs_get_lock_context(nfs_file_open_context(filep)); |
65 | if (IS_ERR(lock)) | |
66 | return PTR_ERR(lock); | |
67 | ||
68 | exception.inode = file_inode(filep); | |
69 | exception.state = lock->open_context->state; | |
70 | ||
f4ac1674 | 71 | do { |
4bdf87eb CH |
72 | err = _nfs42_proc_fallocate(msg, filep, lock, offset, len); |
73 | if (err == -ENOTSUPP) { | |
74 | err = -EOPNOTSUPP; | |
75 | break; | |
76 | } | |
f4ac1674 AS |
77 | err = nfs4_handle_exception(server, err, &exception); |
78 | } while (exception.retry); | |
79 | ||
4bdf87eb | 80 | nfs_put_lock_context(lock); |
f4ac1674 AS |
81 | return err; |
82 | } | |
83 | ||
84 | int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len) | |
85 | { | |
86 | struct rpc_message msg = { | |
87 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE], | |
88 | }; | |
89 | struct inode *inode = file_inode(filep); | |
90 | int err; | |
91 | ||
92 | if (!nfs_server_capable(inode, NFS_CAP_ALLOCATE)) | |
93 | return -EOPNOTSUPP; | |
94 | ||
5955102c | 95 | inode_lock(inode); |
f830f7dd | 96 | |
f4ac1674 AS |
97 | err = nfs42_proc_fallocate(&msg, filep, offset, len); |
98 | if (err == -EOPNOTSUPP) | |
99 | NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE; | |
f830f7dd | 100 | |
5955102c | 101 | inode_unlock(inode); |
f4ac1674 AS |
102 | return err; |
103 | } | |
104 | ||
624bd5b7 AS |
105 | int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len) |
106 | { | |
107 | struct rpc_message msg = { | |
108 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DEALLOCATE], | |
109 | }; | |
110 | struct inode *inode = file_inode(filep); | |
111 | int err; | |
112 | ||
113 | if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE)) | |
114 | return -EOPNOTSUPP; | |
115 | ||
9a51940b | 116 | nfs_wb_all(inode); |
5955102c | 117 | inode_lock(inode); |
f830f7dd | 118 | |
624bd5b7 | 119 | err = nfs42_proc_fallocate(&msg, filep, offset, len); |
9a51940b AS |
120 | if (err == 0) |
121 | truncate_pagecache_range(inode, offset, (offset + len) -1); | |
624bd5b7 AS |
122 | if (err == -EOPNOTSUPP) |
123 | NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE; | |
f830f7dd | 124 | |
5955102c | 125 | inode_unlock(inode); |
624bd5b7 AS |
126 | return err; |
127 | } | |
128 | ||
4bdf87eb CH |
129 | static loff_t _nfs42_proc_llseek(struct file *filep, |
130 | struct nfs_lock_context *lock, loff_t offset, int whence) | |
1c6dcbe5 AS |
131 | { |
132 | struct inode *inode = file_inode(filep); | |
133 | struct nfs42_seek_args args = { | |
134 | .sa_fh = NFS_FH(inode), | |
135 | .sa_offset = offset, | |
136 | .sa_what = (whence == SEEK_HOLE) ? | |
137 | NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA, | |
138 | }; | |
139 | struct nfs42_seek_res res; | |
140 | struct rpc_message msg = { | |
141 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK], | |
142 | .rpc_argp = &args, | |
143 | .rpc_resp = &res, | |
144 | }; | |
145 | struct nfs_server *server = NFS_SERVER(inode); | |
146 | int status; | |
147 | ||
878ffa9f | 148 | if (!nfs_server_capable(inode, NFS_CAP_SEEK)) |
1c6dcbe5 AS |
149 | return -ENOTSUPP; |
150 | ||
4bdf87eb CH |
151 | status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context, |
152 | lock, FMODE_READ); | |
1c6dcbe5 AS |
153 | if (status) |
154 | return status; | |
155 | ||
156 | nfs_wb_all(inode); | |
157 | status = nfs4_call_sync(server->client, server, &msg, | |
158 | &args.seq_args, &res.seq_res, 0); | |
159 | if (status == -ENOTSUPP) | |
160 | server->caps &= ~NFS_CAP_SEEK; | |
161 | if (status) | |
162 | return status; | |
163 | ||
164 | return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes); | |
165 | } | |
be3a5d23 | 166 | |
bdcc2cd1 BF |
167 | loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence) |
168 | { | |
169 | struct nfs_server *server = NFS_SERVER(file_inode(filep)); | |
170 | struct nfs4_exception exception = { }; | |
4bdf87eb | 171 | struct nfs_lock_context *lock; |
306a5549 | 172 | loff_t err; |
bdcc2cd1 | 173 | |
4bdf87eb CH |
174 | lock = nfs_get_lock_context(nfs_file_open_context(filep)); |
175 | if (IS_ERR(lock)) | |
176 | return PTR_ERR(lock); | |
177 | ||
178 | exception.inode = file_inode(filep); | |
179 | exception.state = lock->open_context->state; | |
180 | ||
bdcc2cd1 | 181 | do { |
4bdf87eb | 182 | err = _nfs42_proc_llseek(filep, lock, offset, whence); |
306a5549 BF |
183 | if (err >= 0) |
184 | break; | |
4bdf87eb CH |
185 | if (err == -ENOTSUPP) { |
186 | err = -EOPNOTSUPP; | |
187 | break; | |
188 | } | |
bdcc2cd1 BF |
189 | err = nfs4_handle_exception(server, err, &exception); |
190 | } while (exception.retry); | |
191 | ||
4bdf87eb | 192 | nfs_put_lock_context(lock); |
bdcc2cd1 BF |
193 | return err; |
194 | } | |
195 | ||
196 | ||
1b4a4bd8 PT |
197 | static void |
198 | nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata) | |
199 | { | |
200 | struct nfs42_layoutstat_data *data = calldata; | |
201 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
202 | ||
203 | nfs41_setup_sequence(nfs4_get_session(server), &data->args.seq_args, | |
204 | &data->res.seq_res, task); | |
205 | } | |
206 | ||
207 | static void | |
208 | nfs42_layoutstat_done(struct rpc_task *task, void *calldata) | |
209 | { | |
210 | struct nfs42_layoutstat_data *data = calldata; | |
68d264cf PT |
211 | struct inode *inode = data->inode; |
212 | struct pnfs_layout_hdr *lo; | |
1b4a4bd8 PT |
213 | |
214 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
215 | return; | |
216 | ||
6c5a0d89 TM |
217 | switch (task->tk_status) { |
218 | case 0: | |
219 | break; | |
68d264cf PT |
220 | case -NFS4ERR_EXPIRED: |
221 | case -NFS4ERR_STALE_STATEID: | |
222 | case -NFS4ERR_OLD_STATEID: | |
223 | case -NFS4ERR_BAD_STATEID: | |
224 | spin_lock(&inode->i_lock); | |
225 | lo = NFS_I(inode)->layout; | |
226 | if (lo && nfs4_stateid_match(&data->args.stateid, | |
227 | &lo->plh_stateid)) { | |
228 | LIST_HEAD(head); | |
229 | ||
230 | /* | |
231 | * Mark the bad layout state as invalid, then retry | |
232 | * with the current stateid. | |
233 | */ | |
234 | set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags); | |
235 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
236 | spin_unlock(&inode->i_lock); | |
237 | pnfs_free_lseg_list(&head); | |
238 | } else | |
239 | spin_unlock(&inode->i_lock); | |
240 | break; | |
6c5a0d89 TM |
241 | case -ENOTSUPP: |
242 | case -EOPNOTSUPP: | |
68d264cf | 243 | NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS; |
6c5a0d89 | 244 | default: |
68d264cf | 245 | break; |
6c5a0d89 | 246 | } |
68d264cf PT |
247 | |
248 | dprintk("%s server returns %d\n", __func__, task->tk_status); | |
1b4a4bd8 PT |
249 | } |
250 | ||
251 | static void | |
252 | nfs42_layoutstat_release(void *calldata) | |
253 | { | |
254 | struct nfs42_layoutstat_data *data = calldata; | |
8733408d PT |
255 | struct nfs_server *nfss = NFS_SERVER(data->args.inode); |
256 | ||
257 | if (nfss->pnfs_curr_ld->cleanup_layoutstats) | |
258 | nfss->pnfs_curr_ld->cleanup_layoutstats(data); | |
1b4a4bd8 PT |
259 | |
260 | pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout); | |
1bfe3b25 PT |
261 | smp_mb__before_atomic(); |
262 | clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags); | |
263 | smp_mb__after_atomic(); | |
1b4a4bd8 PT |
264 | nfs_iput_and_deactive(data->inode); |
265 | kfree(data->args.devinfo); | |
266 | kfree(data); | |
267 | } | |
268 | ||
be3a5d23 | 269 | static const struct rpc_call_ops nfs42_layoutstat_ops = { |
1b4a4bd8 PT |
270 | .rpc_call_prepare = nfs42_layoutstat_prepare, |
271 | .rpc_call_done = nfs42_layoutstat_done, | |
272 | .rpc_release = nfs42_layoutstat_release, | |
be3a5d23 TM |
273 | }; |
274 | ||
275 | int nfs42_proc_layoutstats_generic(struct nfs_server *server, | |
276 | struct nfs42_layoutstat_data *data) | |
277 | { | |
278 | struct rpc_message msg = { | |
279 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS], | |
280 | .rpc_argp = &data->args, | |
281 | .rpc_resp = &data->res, | |
282 | }; | |
283 | struct rpc_task_setup task_setup = { | |
284 | .rpc_client = server->client, | |
285 | .rpc_message = &msg, | |
286 | .callback_ops = &nfs42_layoutstat_ops, | |
287 | .callback_data = data, | |
288 | .flags = RPC_TASK_ASYNC, | |
289 | }; | |
290 | struct rpc_task *task; | |
291 | ||
1b4a4bd8 PT |
292 | data->inode = nfs_igrab_and_active(data->args.inode); |
293 | if (!data->inode) { | |
294 | nfs42_layoutstat_release(data); | |
295 | return -EAGAIN; | |
296 | } | |
be3a5d23 TM |
297 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
298 | task = rpc_run_task(&task_setup); | |
299 | if (IS_ERR(task)) | |
300 | return PTR_ERR(task); | |
301 | return 0; | |
302 | } | |
e5341f3a PT |
303 | |
304 | static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f, | |
4bdf87eb CH |
305 | struct file *dst_f, struct nfs_lock_context *src_lock, |
306 | struct nfs_lock_context *dst_lock, loff_t src_offset, | |
307 | loff_t dst_offset, loff_t count) | |
e5341f3a PT |
308 | { |
309 | struct inode *src_inode = file_inode(src_f); | |
310 | struct inode *dst_inode = file_inode(dst_f); | |
311 | struct nfs_server *server = NFS_SERVER(dst_inode); | |
312 | struct nfs42_clone_args args = { | |
313 | .src_fh = NFS_FH(src_inode), | |
314 | .dst_fh = NFS_FH(dst_inode), | |
315 | .src_offset = src_offset, | |
316 | .dst_offset = dst_offset, | |
9494b2ce | 317 | .count = count, |
e5341f3a PT |
318 | .dst_bitmask = server->cache_consistency_bitmask, |
319 | }; | |
320 | struct nfs42_clone_res res = { | |
321 | .server = server, | |
322 | }; | |
323 | int status; | |
324 | ||
325 | msg->rpc_argp = &args; | |
326 | msg->rpc_resp = &res; | |
327 | ||
4bdf87eb CH |
328 | status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context, |
329 | src_lock, FMODE_READ); | |
e5341f3a PT |
330 | if (status) |
331 | return status; | |
332 | ||
4bdf87eb CH |
333 | status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context, |
334 | dst_lock, FMODE_WRITE); | |
e5341f3a PT |
335 | if (status) |
336 | return status; | |
337 | ||
338 | res.dst_fattr = nfs_alloc_fattr(); | |
339 | if (!res.dst_fattr) | |
340 | return -ENOMEM; | |
341 | ||
342 | status = nfs4_call_sync(server->client, server, msg, | |
343 | &args.seq_args, &res.seq_res, 0); | |
344 | if (status == 0) | |
345 | status = nfs_post_op_update_inode(dst_inode, res.dst_fattr); | |
346 | ||
347 | kfree(res.dst_fattr); | |
348 | return status; | |
349 | } | |
350 | ||
351 | int nfs42_proc_clone(struct file *src_f, struct file *dst_f, | |
352 | loff_t src_offset, loff_t dst_offset, loff_t count) | |
353 | { | |
354 | struct rpc_message msg = { | |
355 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE], | |
356 | }; | |
357 | struct inode *inode = file_inode(src_f); | |
358 | struct nfs_server *server = NFS_SERVER(file_inode(src_f)); | |
4bdf87eb CH |
359 | struct nfs_lock_context *src_lock; |
360 | struct nfs_lock_context *dst_lock; | |
361 | struct nfs4_exception src_exception = { }; | |
362 | struct nfs4_exception dst_exception = { }; | |
363 | int err, err2; | |
e5341f3a PT |
364 | |
365 | if (!nfs_server_capable(inode, NFS_CAP_CLONE)) | |
366 | return -EOPNOTSUPP; | |
367 | ||
4bdf87eb CH |
368 | src_lock = nfs_get_lock_context(nfs_file_open_context(src_f)); |
369 | if (IS_ERR(src_lock)) | |
370 | return PTR_ERR(src_lock); | |
371 | ||
372 | src_exception.inode = file_inode(src_f); | |
373 | src_exception.state = src_lock->open_context->state; | |
374 | ||
375 | dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f)); | |
376 | if (IS_ERR(dst_lock)) { | |
377 | err = PTR_ERR(dst_lock); | |
378 | goto out_put_src_lock; | |
379 | } | |
380 | ||
381 | dst_exception.inode = file_inode(dst_f); | |
382 | dst_exception.state = dst_lock->open_context->state; | |
383 | ||
e5341f3a | 384 | do { |
4bdf87eb CH |
385 | err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock, |
386 | src_offset, dst_offset, count); | |
e5341f3a PT |
387 | if (err == -ENOTSUPP || err == -EOPNOTSUPP) { |
388 | NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE; | |
4bdf87eb CH |
389 | err = -EOPNOTSUPP; |
390 | break; | |
e5341f3a | 391 | } |
e5341f3a | 392 | |
4bdf87eb CH |
393 | err2 = nfs4_handle_exception(server, err, &src_exception); |
394 | err = nfs4_handle_exception(server, err, &dst_exception); | |
395 | if (!err) | |
396 | err = err2; | |
397 | } while (src_exception.retry || dst_exception.retry); | |
e5341f3a | 398 | |
4bdf87eb CH |
399 | nfs_put_lock_context(dst_lock); |
400 | out_put_src_lock: | |
401 | nfs_put_lock_context(src_lock); | |
402 | return err; | |
e5341f3a | 403 | } |