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 inode *inode = file_inode(filep);
60 struct nfs_server *server = NFS_SERVER(inode);
61 struct nfs4_exception exception = { };
62 struct nfs_lock_context *lock;
65 lock = nfs_get_lock_context(nfs_file_open_context(filep));
69 exception.inode = inode;
70 exception.state = lock->open_context->state;
72 err = nfs_sync_inode(inode);
77 err = _nfs42_proc_fallocate(msg, filep, lock, offset, len);
78 if (err == -ENOTSUPP) {
82 err = nfs4_handle_exception(server, err, &exception);
83 } while (exception.retry);
85 nfs_put_lock_context(lock);
89 int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len)
91 struct rpc_message msg = {
92 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE],
94 struct inode *inode = file_inode(filep);
97 if (!nfs_server_capable(inode, NFS_CAP_ALLOCATE))
102 err = nfs42_proc_fallocate(&msg, filep, offset, len);
103 if (err == -EOPNOTSUPP)
104 NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE;
110 int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len)
112 struct rpc_message msg = {
113 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DEALLOCATE],
115 struct inode *inode = file_inode(filep);
118 if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE))
123 err = nfs42_proc_fallocate(&msg, filep, offset, len);
125 truncate_pagecache_range(inode, offset, (offset + len) -1);
126 if (err == -EOPNOTSUPP)
127 NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE;
133 static ssize_t _nfs42_proc_copy(struct file *src,
134 struct nfs_lock_context *src_lock,
136 struct nfs_lock_context *dst_lock,
137 struct nfs42_copy_args *args,
138 struct nfs42_copy_res *res)
140 struct rpc_message msg = {
141 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY],
145 struct inode *dst_inode = file_inode(dst);
146 struct nfs_server *server = NFS_SERVER(dst_inode);
147 loff_t pos_src = args->src_pos;
148 loff_t pos_dst = args->dst_pos;
149 size_t count = args->count;
152 status = nfs4_set_rw_stateid(&args->src_stateid, src_lock->open_context,
153 src_lock, FMODE_READ);
157 status = nfs_filemap_write_and_wait_range(file_inode(src)->i_mapping,
158 pos_src, pos_src + (loff_t)count - 1);
162 status = nfs4_set_rw_stateid(&args->dst_stateid, dst_lock->open_context,
163 dst_lock, FMODE_WRITE);
167 status = nfs_sync_inode(dst_inode);
171 status = nfs4_call_sync(server->client, server, &msg,
172 &args->seq_args, &res->seq_res, 0);
173 if (status == -ENOTSUPP)
174 server->caps &= ~NFS_CAP_COPY;
178 if (res->write_res.verifier.committed != NFS_FILE_SYNC) {
179 status = nfs_commit_file(dst, &res->write_res.verifier.verifier);
184 truncate_pagecache_range(dst_inode, pos_dst,
185 pos_dst + res->write_res.count);
187 return res->write_res.count;
190 ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
191 struct file *dst, loff_t pos_dst,
194 struct nfs_server *server = NFS_SERVER(file_inode(dst));
195 struct nfs_lock_context *src_lock;
196 struct nfs_lock_context *dst_lock;
197 struct nfs42_copy_args args = {
198 .src_fh = NFS_FH(file_inode(src)),
200 .dst_fh = NFS_FH(file_inode(dst)),
204 struct nfs42_copy_res res;
205 struct nfs4_exception src_exception = {
206 .inode = file_inode(src),
207 .stateid = &args.src_stateid,
209 struct nfs4_exception dst_exception = {
210 .inode = file_inode(dst),
211 .stateid = &args.dst_stateid,
215 if (!nfs_server_capable(file_inode(dst), NFS_CAP_COPY))
218 src_lock = nfs_get_lock_context(nfs_file_open_context(src));
219 if (IS_ERR(src_lock))
220 return PTR_ERR(src_lock);
222 src_exception.state = src_lock->open_context->state;
224 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst));
225 if (IS_ERR(dst_lock)) {
226 err = PTR_ERR(dst_lock);
227 goto out_put_src_lock;
230 dst_exception.state = dst_lock->open_context->state;
233 inode_lock(file_inode(dst));
234 err = _nfs42_proc_copy(src, src_lock,
237 inode_unlock(file_inode(dst));
241 if (err == -ENOTSUPP) {
246 err2 = nfs4_handle_exception(server, err, &src_exception);
247 err = nfs4_handle_exception(server, err, &dst_exception);
250 } while (src_exception.retry || dst_exception.retry);
252 nfs_put_lock_context(dst_lock);
254 nfs_put_lock_context(src_lock);
258 static loff_t _nfs42_proc_llseek(struct file *filep,
259 struct nfs_lock_context *lock, loff_t offset, int whence)
261 struct inode *inode = file_inode(filep);
262 struct nfs42_seek_args args = {
263 .sa_fh = NFS_FH(inode),
265 .sa_what = (whence == SEEK_HOLE) ?
266 NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA,
268 struct nfs42_seek_res res;
269 struct rpc_message msg = {
270 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK],
274 struct nfs_server *server = NFS_SERVER(inode);
277 if (!nfs_server_capable(inode, NFS_CAP_SEEK))
280 status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context,
285 status = nfs_filemap_write_and_wait_range(inode->i_mapping,
290 status = nfs4_call_sync(server->client, server, &msg,
291 &args.seq_args, &res.seq_res, 0);
292 if (status == -ENOTSUPP)
293 server->caps &= ~NFS_CAP_SEEK;
297 if (whence == SEEK_DATA && res.sr_eof)
298 return -NFS4ERR_NXIO;
300 return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
303 loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
305 struct nfs_server *server = NFS_SERVER(file_inode(filep));
306 struct nfs4_exception exception = { };
307 struct nfs_lock_context *lock;
310 lock = nfs_get_lock_context(nfs_file_open_context(filep));
312 return PTR_ERR(lock);
314 exception.inode = file_inode(filep);
315 exception.state = lock->open_context->state;
318 err = _nfs42_proc_llseek(filep, lock, offset, whence);
321 if (err == -ENOTSUPP) {
325 err = nfs4_handle_exception(server, err, &exception);
326 } while (exception.retry);
328 nfs_put_lock_context(lock);
334 nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata)
336 struct nfs42_layoutstat_data *data = calldata;
337 struct inode *inode = data->inode;
338 struct nfs_server *server = NFS_SERVER(inode);
339 struct pnfs_layout_hdr *lo;
341 spin_lock(&inode->i_lock);
342 lo = NFS_I(inode)->layout;
343 if (!pnfs_layout_is_valid(lo)) {
344 spin_unlock(&inode->i_lock);
348 nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid);
349 spin_unlock(&inode->i_lock);
350 nfs41_setup_sequence(nfs4_get_session(server), &data->args.seq_args,
351 &data->res.seq_res, task);
356 nfs42_layoutstat_done(struct rpc_task *task, void *calldata)
358 struct nfs42_layoutstat_data *data = calldata;
359 struct inode *inode = data->inode;
360 struct pnfs_layout_hdr *lo;
362 if (!nfs4_sequence_done(task, &data->res.seq_res))
365 switch (task->tk_status) {
368 case -NFS4ERR_EXPIRED:
369 case -NFS4ERR_ADMIN_REVOKED:
370 case -NFS4ERR_DELEG_REVOKED:
371 case -NFS4ERR_STALE_STATEID:
372 case -NFS4ERR_BAD_STATEID:
373 spin_lock(&inode->i_lock);
374 lo = NFS_I(inode)->layout;
375 if (pnfs_layout_is_valid(lo) &&
376 nfs4_stateid_match(&data->args.stateid,
381 * Mark the bad layout state as invalid, then retry
382 * with the current stateid.
384 pnfs_mark_layout_stateid_invalid(lo, &head);
385 spin_unlock(&inode->i_lock);
386 pnfs_free_lseg_list(&head);
388 spin_unlock(&inode->i_lock);
390 case -NFS4ERR_OLD_STATEID:
391 spin_lock(&inode->i_lock);
392 lo = NFS_I(inode)->layout;
393 if (pnfs_layout_is_valid(lo) &&
394 nfs4_stateid_match_other(&data->args.stateid,
396 /* Do we need to delay before resending? */
397 if (!nfs4_stateid_is_newer(&lo->plh_stateid,
398 &data->args.stateid))
400 rpc_restart_call_prepare(task);
402 spin_unlock(&inode->i_lock);
406 NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS;
409 dprintk("%s server returns %d\n", __func__, task->tk_status);
413 nfs42_layoutstat_release(void *calldata)
415 struct nfs42_layoutstat_data *data = calldata;
416 struct nfs_server *nfss = NFS_SERVER(data->args.inode);
418 if (nfss->pnfs_curr_ld->cleanup_layoutstats)
419 nfss->pnfs_curr_ld->cleanup_layoutstats(data);
421 pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout);
422 smp_mb__before_atomic();
423 clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags);
424 smp_mb__after_atomic();
425 nfs_iput_and_deactive(data->inode);
426 kfree(data->args.devinfo);
430 static const struct rpc_call_ops nfs42_layoutstat_ops = {
431 .rpc_call_prepare = nfs42_layoutstat_prepare,
432 .rpc_call_done = nfs42_layoutstat_done,
433 .rpc_release = nfs42_layoutstat_release,
436 int nfs42_proc_layoutstats_generic(struct nfs_server *server,
437 struct nfs42_layoutstat_data *data)
439 struct rpc_message msg = {
440 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS],
441 .rpc_argp = &data->args,
442 .rpc_resp = &data->res,
444 struct rpc_task_setup task_setup = {
445 .rpc_client = server->client,
447 .callback_ops = &nfs42_layoutstat_ops,
448 .callback_data = data,
449 .flags = RPC_TASK_ASYNC,
451 struct rpc_task *task;
453 data->inode = nfs_igrab_and_active(data->args.inode);
455 nfs42_layoutstat_release(data);
458 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
459 task = rpc_run_task(&task_setup);
461 return PTR_ERR(task);
466 static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f,
467 struct file *dst_f, struct nfs_lock_context *src_lock,
468 struct nfs_lock_context *dst_lock, loff_t src_offset,
469 loff_t dst_offset, loff_t count)
471 struct inode *src_inode = file_inode(src_f);
472 struct inode *dst_inode = file_inode(dst_f);
473 struct nfs_server *server = NFS_SERVER(dst_inode);
474 struct nfs42_clone_args args = {
475 .src_fh = NFS_FH(src_inode),
476 .dst_fh = NFS_FH(dst_inode),
477 .src_offset = src_offset,
478 .dst_offset = dst_offset,
480 .dst_bitmask = server->cache_consistency_bitmask,
482 struct nfs42_clone_res res = {
487 msg->rpc_argp = &args;
488 msg->rpc_resp = &res;
490 status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context,
491 src_lock, FMODE_READ);
495 status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
496 dst_lock, FMODE_WRITE);
500 res.dst_fattr = nfs_alloc_fattr();
504 status = nfs4_call_sync(server->client, server, msg,
505 &args.seq_args, &res.seq_res, 0);
507 status = nfs_post_op_update_inode(dst_inode, res.dst_fattr);
509 kfree(res.dst_fattr);
513 int nfs42_proc_clone(struct file *src_f, struct file *dst_f,
514 loff_t src_offset, loff_t dst_offset, loff_t count)
516 struct rpc_message msg = {
517 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE],
519 struct inode *inode = file_inode(src_f);
520 struct nfs_server *server = NFS_SERVER(file_inode(src_f));
521 struct nfs_lock_context *src_lock;
522 struct nfs_lock_context *dst_lock;
523 struct nfs4_exception src_exception = { };
524 struct nfs4_exception dst_exception = { };
527 if (!nfs_server_capable(inode, NFS_CAP_CLONE))
530 src_lock = nfs_get_lock_context(nfs_file_open_context(src_f));
531 if (IS_ERR(src_lock))
532 return PTR_ERR(src_lock);
534 src_exception.inode = file_inode(src_f);
535 src_exception.state = src_lock->open_context->state;
537 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f));
538 if (IS_ERR(dst_lock)) {
539 err = PTR_ERR(dst_lock);
540 goto out_put_src_lock;
543 dst_exception.inode = file_inode(dst_f);
544 dst_exception.state = dst_lock->open_context->state;
547 err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock,
548 src_offset, dst_offset, count);
549 if (err == -ENOTSUPP || err == -EOPNOTSUPP) {
550 NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE;
555 err2 = nfs4_handle_exception(server, err, &src_exception);
556 err = nfs4_handle_exception(server, err, &dst_exception);
559 } while (src_exception.retry || dst_exception.retry);
561 nfs_put_lock_context(dst_lock);
563 nfs_put_lock_context(src_lock);