2 * Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com>
5 #include <linux/sunrpc/sched.h>
7 #include <linux/nfs3.h>
8 #include <linux/nfs4.h>
9 #include <linux/nfs_xdr.h>
10 #include <linux/nfs_fs.h>
17 #define NFSDBG_FACILITY NFSDBG_PROC
19 static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
20 struct nfs_lock_context *lock, loff_t offset, loff_t len)
22 struct inode *inode = file_inode(filep);
23 struct nfs_server *server = NFS_SERVER(inode);
24 struct nfs42_falloc_args args = {
25 .falloc_fh = NFS_FH(inode),
26 .falloc_offset = offset,
28 .falloc_bitmask = server->cache_consistency_bitmask,
30 struct nfs42_falloc_res res = {
31 .falloc_server = server,
35 msg->rpc_argp = &args;
38 status = nfs4_set_rw_stateid(&args.falloc_stateid, lock->open_context,
43 res.falloc_fattr = nfs_alloc_fattr();
44 if (!res.falloc_fattr)
47 status = nfs4_call_sync(server->client, server, msg,
48 &args.seq_args, &res.seq_res, 0);
50 status = nfs_post_op_update_inode(inode, res.falloc_fattr);
52 kfree(res.falloc_fattr);
56 static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
57 loff_t offset, loff_t len)
59 struct nfs_server *server = NFS_SERVER(file_inode(filep));
60 struct nfs4_exception exception = { };
61 struct nfs_lock_context *lock;
64 lock = nfs_get_lock_context(nfs_file_open_context(filep));
68 exception.inode = file_inode(filep);
69 exception.state = lock->open_context->state;
72 err = _nfs42_proc_fallocate(msg, filep, lock, offset, len);
73 if (err == -ENOTSUPP) {
77 err = nfs4_handle_exception(server, err, &exception);
78 } while (exception.retry);
80 nfs_put_lock_context(lock);
84 int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len)
86 struct rpc_message msg = {
87 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE],
89 struct inode *inode = file_inode(filep);
92 if (!nfs_server_capable(inode, NFS_CAP_ALLOCATE))
97 err = nfs42_proc_fallocate(&msg, filep, offset, len);
98 if (err == -EOPNOTSUPP)
99 NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE;
105 int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len)
107 struct rpc_message msg = {
108 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DEALLOCATE],
110 struct inode *inode = file_inode(filep);
113 if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE))
117 err = nfs_sync_inode(inode);
121 err = nfs42_proc_fallocate(&msg, filep, offset, len);
123 truncate_pagecache_range(inode, offset, (offset + len) -1);
124 if (err == -EOPNOTSUPP)
125 NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE;
131 static ssize_t _nfs42_proc_copy(struct file *src, loff_t pos_src,
132 struct nfs_lock_context *src_lock,
133 struct file *dst, loff_t pos_dst,
134 struct nfs_lock_context *dst_lock,
137 struct nfs42_copy_args args = {
138 .src_fh = NFS_FH(file_inode(src)),
140 .dst_fh = NFS_FH(file_inode(dst)),
144 struct nfs42_copy_res res;
145 struct rpc_message msg = {
146 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY],
150 struct inode *dst_inode = file_inode(dst);
151 struct nfs_server *server = NFS_SERVER(dst_inode);
154 status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context,
155 src_lock, FMODE_READ);
159 status = nfs_filemap_write_and_wait_range(file_inode(src)->i_mapping,
160 pos_src, pos_src + (loff_t)count - 1);
164 status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
165 dst_lock, FMODE_WRITE);
169 status = nfs_sync_inode(dst_inode);
173 status = nfs4_call_sync(server->client, server, &msg,
174 &args.seq_args, &res.seq_res, 0);
175 if (status == -ENOTSUPP)
176 server->caps &= ~NFS_CAP_COPY;
180 if (res.write_res.verifier.committed != NFS_FILE_SYNC) {
181 status = nfs_commit_file(dst, &res.write_res.verifier.verifier);
186 truncate_pagecache_range(dst_inode, pos_dst,
187 pos_dst + res.write_res.count);
189 return res.write_res.count;
192 ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
193 struct file *dst, loff_t pos_dst,
196 struct nfs_server *server = NFS_SERVER(file_inode(dst));
197 struct nfs_lock_context *src_lock;
198 struct nfs_lock_context *dst_lock;
199 struct nfs4_exception src_exception = { };
200 struct nfs4_exception dst_exception = { };
203 if (!nfs_server_capable(file_inode(dst), NFS_CAP_COPY))
206 src_lock = nfs_get_lock_context(nfs_file_open_context(src));
207 if (IS_ERR(src_lock))
208 return PTR_ERR(src_lock);
210 src_exception.inode = file_inode(src);
211 src_exception.state = src_lock->open_context->state;
213 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst));
214 if (IS_ERR(dst_lock)) {
215 err = PTR_ERR(dst_lock);
216 goto out_put_src_lock;
219 dst_exception.inode = file_inode(dst);
220 dst_exception.state = dst_lock->open_context->state;
223 inode_lock(file_inode(dst));
224 err = _nfs42_proc_copy(src, pos_src, src_lock,
225 dst, pos_dst, dst_lock, count);
226 inode_unlock(file_inode(dst));
228 if (err == -ENOTSUPP) {
233 err2 = nfs4_handle_exception(server, err, &src_exception);
234 err = nfs4_handle_exception(server, err, &dst_exception);
237 } while (src_exception.retry || dst_exception.retry);
239 nfs_put_lock_context(dst_lock);
241 nfs_put_lock_context(src_lock);
245 static loff_t _nfs42_proc_llseek(struct file *filep,
246 struct nfs_lock_context *lock, loff_t offset, int whence)
248 struct inode *inode = file_inode(filep);
249 struct nfs42_seek_args args = {
250 .sa_fh = NFS_FH(inode),
252 .sa_what = (whence == SEEK_HOLE) ?
253 NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA,
255 struct nfs42_seek_res res;
256 struct rpc_message msg = {
257 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK],
261 struct nfs_server *server = NFS_SERVER(inode);
264 if (!nfs_server_capable(inode, NFS_CAP_SEEK))
267 status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context,
272 status = nfs_filemap_write_and_wait_range(inode->i_mapping,
277 status = nfs4_call_sync(server->client, server, &msg,
278 &args.seq_args, &res.seq_res, 0);
279 if (status == -ENOTSUPP)
280 server->caps &= ~NFS_CAP_SEEK;
284 return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
287 loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
289 struct nfs_server *server = NFS_SERVER(file_inode(filep));
290 struct nfs4_exception exception = { };
291 struct nfs_lock_context *lock;
294 lock = nfs_get_lock_context(nfs_file_open_context(filep));
296 return PTR_ERR(lock);
298 exception.inode = file_inode(filep);
299 exception.state = lock->open_context->state;
302 err = _nfs42_proc_llseek(filep, lock, offset, whence);
305 if (err == -ENOTSUPP) {
309 err = nfs4_handle_exception(server, err, &exception);
310 } while (exception.retry);
312 nfs_put_lock_context(lock);
318 nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata)
320 struct nfs42_layoutstat_data *data = calldata;
321 struct inode *inode = data->inode;
322 struct nfs_server *server = NFS_SERVER(inode);
323 struct pnfs_layout_hdr *lo;
325 spin_lock(&inode->i_lock);
326 lo = NFS_I(inode)->layout;
327 if (!pnfs_layout_is_valid(lo)) {
328 spin_unlock(&inode->i_lock);
332 nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid);
333 spin_unlock(&inode->i_lock);
334 nfs41_setup_sequence(nfs4_get_session(server), &data->args.seq_args,
335 &data->res.seq_res, task);
340 nfs42_layoutstat_done(struct rpc_task *task, void *calldata)
342 struct nfs42_layoutstat_data *data = calldata;
343 struct inode *inode = data->inode;
344 struct pnfs_layout_hdr *lo;
346 if (!nfs4_sequence_done(task, &data->res.seq_res))
349 switch (task->tk_status) {
352 case -NFS4ERR_EXPIRED:
353 case -NFS4ERR_ADMIN_REVOKED:
354 case -NFS4ERR_DELEG_REVOKED:
355 case -NFS4ERR_STALE_STATEID:
356 case -NFS4ERR_BAD_STATEID:
357 spin_lock(&inode->i_lock);
358 lo = NFS_I(inode)->layout;
359 if (pnfs_layout_is_valid(lo) &&
360 nfs4_stateid_match(&data->args.stateid,
365 * Mark the bad layout state as invalid, then retry
366 * with the current stateid.
368 pnfs_mark_layout_stateid_invalid(lo, &head);
369 spin_unlock(&inode->i_lock);
370 pnfs_free_lseg_list(&head);
372 spin_unlock(&inode->i_lock);
374 case -NFS4ERR_OLD_STATEID:
375 spin_lock(&inode->i_lock);
376 lo = NFS_I(inode)->layout;
377 if (pnfs_layout_is_valid(lo) &&
378 nfs4_stateid_match_other(&data->args.stateid,
380 /* Do we need to delay before resending? */
381 if (!nfs4_stateid_is_newer(&lo->plh_stateid,
382 &data->args.stateid))
384 rpc_restart_call_prepare(task);
386 spin_unlock(&inode->i_lock);
390 NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS;
393 dprintk("%s server returns %d\n", __func__, task->tk_status);
397 nfs42_layoutstat_release(void *calldata)
399 struct nfs42_layoutstat_data *data = calldata;
400 struct nfs_server *nfss = NFS_SERVER(data->args.inode);
402 if (nfss->pnfs_curr_ld->cleanup_layoutstats)
403 nfss->pnfs_curr_ld->cleanup_layoutstats(data);
405 pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout);
406 smp_mb__before_atomic();
407 clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags);
408 smp_mb__after_atomic();
409 nfs_iput_and_deactive(data->inode);
410 kfree(data->args.devinfo);
414 static const struct rpc_call_ops nfs42_layoutstat_ops = {
415 .rpc_call_prepare = nfs42_layoutstat_prepare,
416 .rpc_call_done = nfs42_layoutstat_done,
417 .rpc_release = nfs42_layoutstat_release,
420 int nfs42_proc_layoutstats_generic(struct nfs_server *server,
421 struct nfs42_layoutstat_data *data)
423 struct rpc_message msg = {
424 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS],
425 .rpc_argp = &data->args,
426 .rpc_resp = &data->res,
428 struct rpc_task_setup task_setup = {
429 .rpc_client = server->client,
431 .callback_ops = &nfs42_layoutstat_ops,
432 .callback_data = data,
433 .flags = RPC_TASK_ASYNC,
435 struct rpc_task *task;
437 data->inode = nfs_igrab_and_active(data->args.inode);
439 nfs42_layoutstat_release(data);
442 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
443 task = rpc_run_task(&task_setup);
445 return PTR_ERR(task);
449 static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f,
450 struct file *dst_f, struct nfs_lock_context *src_lock,
451 struct nfs_lock_context *dst_lock, loff_t src_offset,
452 loff_t dst_offset, loff_t count)
454 struct inode *src_inode = file_inode(src_f);
455 struct inode *dst_inode = file_inode(dst_f);
456 struct nfs_server *server = NFS_SERVER(dst_inode);
457 struct nfs42_clone_args args = {
458 .src_fh = NFS_FH(src_inode),
459 .dst_fh = NFS_FH(dst_inode),
460 .src_offset = src_offset,
461 .dst_offset = dst_offset,
463 .dst_bitmask = server->cache_consistency_bitmask,
465 struct nfs42_clone_res res = {
470 msg->rpc_argp = &args;
471 msg->rpc_resp = &res;
473 status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context,
474 src_lock, FMODE_READ);
478 status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
479 dst_lock, FMODE_WRITE);
483 res.dst_fattr = nfs_alloc_fattr();
487 status = nfs4_call_sync(server->client, server, msg,
488 &args.seq_args, &res.seq_res, 0);
490 status = nfs_post_op_update_inode(dst_inode, res.dst_fattr);
492 kfree(res.dst_fattr);
496 int nfs42_proc_clone(struct file *src_f, struct file *dst_f,
497 loff_t src_offset, loff_t dst_offset, loff_t count)
499 struct rpc_message msg = {
500 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE],
502 struct inode *inode = file_inode(src_f);
503 struct nfs_server *server = NFS_SERVER(file_inode(src_f));
504 struct nfs_lock_context *src_lock;
505 struct nfs_lock_context *dst_lock;
506 struct nfs4_exception src_exception = { };
507 struct nfs4_exception dst_exception = { };
510 if (!nfs_server_capable(inode, NFS_CAP_CLONE))
513 src_lock = nfs_get_lock_context(nfs_file_open_context(src_f));
514 if (IS_ERR(src_lock))
515 return PTR_ERR(src_lock);
517 src_exception.inode = file_inode(src_f);
518 src_exception.state = src_lock->open_context->state;
520 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f));
521 if (IS_ERR(dst_lock)) {
522 err = PTR_ERR(dst_lock);
523 goto out_put_src_lock;
526 dst_exception.inode = file_inode(dst_f);
527 dst_exception.state = dst_lock->open_context->state;
530 err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock,
531 src_offset, dst_offset, count);
532 if (err == -ENOTSUPP || err == -EOPNOTSUPP) {
533 NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE;
538 err2 = nfs4_handle_exception(server, err, &src_exception);
539 err = nfs4_handle_exception(server, err, &dst_exception);
542 } while (src_exception.retry || dst_exception.retry);
544 nfs_put_lock_context(dst_lock);
546 nfs_put_lock_context(src_lock);