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 WARN_ON_ONCE(invalidate_inode_pages2_range(dst_inode->i_mapping,
185 pos_dst >> PAGE_SHIFT,
186 (pos_dst + res->write_res.count - 1) >> PAGE_SHIFT));
188 return res->write_res.count;
191 ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
192 struct file *dst, loff_t pos_dst,
195 struct nfs_server *server = NFS_SERVER(file_inode(dst));
196 struct nfs_lock_context *src_lock;
197 struct nfs_lock_context *dst_lock;
198 struct nfs42_copy_args args = {
199 .src_fh = NFS_FH(file_inode(src)),
201 .dst_fh = NFS_FH(file_inode(dst)),
205 struct nfs42_copy_res res;
206 struct nfs4_exception src_exception = {
207 .inode = file_inode(src),
208 .stateid = &args.src_stateid,
210 struct nfs4_exception dst_exception = {
211 .inode = file_inode(dst),
212 .stateid = &args.dst_stateid,
216 if (!nfs_server_capable(file_inode(dst), NFS_CAP_COPY))
219 src_lock = nfs_get_lock_context(nfs_file_open_context(src));
220 if (IS_ERR(src_lock))
221 return PTR_ERR(src_lock);
223 src_exception.state = src_lock->open_context->state;
225 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst));
226 if (IS_ERR(dst_lock)) {
227 err = PTR_ERR(dst_lock);
228 goto out_put_src_lock;
231 dst_exception.state = dst_lock->open_context->state;
234 inode_lock(file_inode(dst));
235 err = _nfs42_proc_copy(src, src_lock,
238 inode_unlock(file_inode(dst));
242 if (err == -ENOTSUPP) {
247 err2 = nfs4_handle_exception(server, err, &src_exception);
248 err = nfs4_handle_exception(server, err, &dst_exception);
251 } while (src_exception.retry || dst_exception.retry);
253 nfs_put_lock_context(dst_lock);
255 nfs_put_lock_context(src_lock);
259 static loff_t _nfs42_proc_llseek(struct file *filep,
260 struct nfs_lock_context *lock, loff_t offset, int whence)
262 struct inode *inode = file_inode(filep);
263 struct nfs42_seek_args args = {
264 .sa_fh = NFS_FH(inode),
266 .sa_what = (whence == SEEK_HOLE) ?
267 NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA,
269 struct nfs42_seek_res res;
270 struct rpc_message msg = {
271 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK],
275 struct nfs_server *server = NFS_SERVER(inode);
278 if (!nfs_server_capable(inode, NFS_CAP_SEEK))
281 status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context,
286 status = nfs_filemap_write_and_wait_range(inode->i_mapping,
291 status = nfs4_call_sync(server->client, server, &msg,
292 &args.seq_args, &res.seq_res, 0);
293 if (status == -ENOTSUPP)
294 server->caps &= ~NFS_CAP_SEEK;
298 if (whence == SEEK_DATA && res.sr_eof)
299 return -NFS4ERR_NXIO;
301 return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
304 loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
306 struct nfs_server *server = NFS_SERVER(file_inode(filep));
307 struct nfs4_exception exception = { };
308 struct nfs_lock_context *lock;
311 lock = nfs_get_lock_context(nfs_file_open_context(filep));
313 return PTR_ERR(lock);
315 exception.inode = file_inode(filep);
316 exception.state = lock->open_context->state;
319 err = _nfs42_proc_llseek(filep, lock, offset, whence);
322 if (err == -ENOTSUPP) {
326 err = nfs4_handle_exception(server, err, &exception);
327 } while (exception.retry);
329 nfs_put_lock_context(lock);
335 nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata)
337 struct nfs42_layoutstat_data *data = calldata;
338 struct inode *inode = data->inode;
339 struct nfs_server *server = NFS_SERVER(inode);
340 struct pnfs_layout_hdr *lo;
342 spin_lock(&inode->i_lock);
343 lo = NFS_I(inode)->layout;
344 if (!pnfs_layout_is_valid(lo)) {
345 spin_unlock(&inode->i_lock);
349 nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid);
350 spin_unlock(&inode->i_lock);
351 nfs41_setup_sequence(nfs4_get_session(server), &data->args.seq_args,
352 &data->res.seq_res, task);
357 nfs42_layoutstat_done(struct rpc_task *task, void *calldata)
359 struct nfs42_layoutstat_data *data = calldata;
360 struct inode *inode = data->inode;
361 struct pnfs_layout_hdr *lo;
363 if (!nfs4_sequence_done(task, &data->res.seq_res))
366 switch (task->tk_status) {
369 case -NFS4ERR_EXPIRED:
370 case -NFS4ERR_ADMIN_REVOKED:
371 case -NFS4ERR_DELEG_REVOKED:
372 case -NFS4ERR_STALE_STATEID:
373 case -NFS4ERR_BAD_STATEID:
374 spin_lock(&inode->i_lock);
375 lo = NFS_I(inode)->layout;
376 if (pnfs_layout_is_valid(lo) &&
377 nfs4_stateid_match(&data->args.stateid,
382 * Mark the bad layout state as invalid, then retry
383 * with the current stateid.
385 pnfs_mark_layout_stateid_invalid(lo, &head);
386 spin_unlock(&inode->i_lock);
387 pnfs_free_lseg_list(&head);
389 spin_unlock(&inode->i_lock);
391 case -NFS4ERR_OLD_STATEID:
392 spin_lock(&inode->i_lock);
393 lo = NFS_I(inode)->layout;
394 if (pnfs_layout_is_valid(lo) &&
395 nfs4_stateid_match_other(&data->args.stateid,
397 /* Do we need to delay before resending? */
398 if (!nfs4_stateid_is_newer(&lo->plh_stateid,
399 &data->args.stateid))
401 rpc_restart_call_prepare(task);
403 spin_unlock(&inode->i_lock);
407 NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS;
410 dprintk("%s server returns %d\n", __func__, task->tk_status);
414 nfs42_layoutstat_release(void *calldata)
416 struct nfs42_layoutstat_data *data = calldata;
417 struct nfs_server *nfss = NFS_SERVER(data->args.inode);
419 if (nfss->pnfs_curr_ld->cleanup_layoutstats)
420 nfss->pnfs_curr_ld->cleanup_layoutstats(data);
422 pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout);
423 smp_mb__before_atomic();
424 clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags);
425 smp_mb__after_atomic();
426 nfs_iput_and_deactive(data->inode);
427 kfree(data->args.devinfo);
431 static const struct rpc_call_ops nfs42_layoutstat_ops = {
432 .rpc_call_prepare = nfs42_layoutstat_prepare,
433 .rpc_call_done = nfs42_layoutstat_done,
434 .rpc_release = nfs42_layoutstat_release,
437 int nfs42_proc_layoutstats_generic(struct nfs_server *server,
438 struct nfs42_layoutstat_data *data)
440 struct rpc_message msg = {
441 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS],
442 .rpc_argp = &data->args,
443 .rpc_resp = &data->res,
445 struct rpc_task_setup task_setup = {
446 .rpc_client = server->client,
448 .callback_ops = &nfs42_layoutstat_ops,
449 .callback_data = data,
450 .flags = RPC_TASK_ASYNC,
452 struct rpc_task *task;
454 data->inode = nfs_igrab_and_active(data->args.inode);
456 nfs42_layoutstat_release(data);
459 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
460 task = rpc_run_task(&task_setup);
462 return PTR_ERR(task);
467 static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f,
468 struct file *dst_f, struct nfs_lock_context *src_lock,
469 struct nfs_lock_context *dst_lock, loff_t src_offset,
470 loff_t dst_offset, loff_t count)
472 struct inode *src_inode = file_inode(src_f);
473 struct inode *dst_inode = file_inode(dst_f);
474 struct nfs_server *server = NFS_SERVER(dst_inode);
475 struct nfs42_clone_args args = {
476 .src_fh = NFS_FH(src_inode),
477 .dst_fh = NFS_FH(dst_inode),
478 .src_offset = src_offset,
479 .dst_offset = dst_offset,
481 .dst_bitmask = server->cache_consistency_bitmask,
483 struct nfs42_clone_res res = {
488 msg->rpc_argp = &args;
489 msg->rpc_resp = &res;
491 status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context,
492 src_lock, FMODE_READ);
496 status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
497 dst_lock, FMODE_WRITE);
501 res.dst_fattr = nfs_alloc_fattr();
505 status = nfs4_call_sync(server->client, server, msg,
506 &args.seq_args, &res.seq_res, 0);
508 status = nfs_post_op_update_inode(dst_inode, res.dst_fattr);
510 kfree(res.dst_fattr);
514 int nfs42_proc_clone(struct file *src_f, struct file *dst_f,
515 loff_t src_offset, loff_t dst_offset, loff_t count)
517 struct rpc_message msg = {
518 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE],
520 struct inode *inode = file_inode(src_f);
521 struct nfs_server *server = NFS_SERVER(file_inode(src_f));
522 struct nfs_lock_context *src_lock;
523 struct nfs_lock_context *dst_lock;
524 struct nfs4_exception src_exception = { };
525 struct nfs4_exception dst_exception = { };
528 if (!nfs_server_capable(inode, NFS_CAP_CLONE))
531 src_lock = nfs_get_lock_context(nfs_file_open_context(src_f));
532 if (IS_ERR(src_lock))
533 return PTR_ERR(src_lock);
535 src_exception.inode = file_inode(src_f);
536 src_exception.state = src_lock->open_context->state;
538 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f));
539 if (IS_ERR(dst_lock)) {
540 err = PTR_ERR(dst_lock);
541 goto out_put_src_lock;
544 dst_exception.inode = file_inode(dst_f);
545 dst_exception.state = dst_lock->open_context->state;
548 err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock,
549 src_offset, dst_offset, count);
550 if (err == -ENOTSUPP || err == -EOPNOTSUPP) {
551 NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE;
556 err2 = nfs4_handle_exception(server, err, &src_exception);
557 err = nfs4_handle_exception(server, err, &dst_exception);
560 } while (src_exception.retry || dst_exception.retry);
562 nfs_put_lock_context(dst_lock);
564 nfs_put_lock_context(src_lock);