1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com>
6 #include <linux/sunrpc/sched.h>
8 #include <linux/nfs3.h>
9 #include <linux/nfs4.h>
10 #include <linux/nfs_xdr.h>
11 #include <linux/nfs_fs.h>
16 #include "nfs4session.h"
19 #define NFSDBG_FACILITY NFSDBG_PROC
21 static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
22 struct nfs_lock_context *lock, loff_t offset, loff_t len)
24 struct inode *inode = file_inode(filep);
25 struct nfs_server *server = NFS_SERVER(inode);
26 struct nfs42_falloc_args args = {
27 .falloc_fh = NFS_FH(inode),
28 .falloc_offset = offset,
30 .falloc_bitmask = server->cache_consistency_bitmask,
32 struct nfs42_falloc_res res = {
33 .falloc_server = server,
37 msg->rpc_argp = &args;
40 status = nfs4_set_rw_stateid(&args.falloc_stateid, lock->open_context,
45 res.falloc_fattr = nfs_alloc_fattr();
46 if (!res.falloc_fattr)
49 status = nfs4_call_sync(server->client, server, msg,
50 &args.seq_args, &res.seq_res, 0);
52 status = nfs_post_op_update_inode(inode, res.falloc_fattr);
54 kfree(res.falloc_fattr);
58 static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
59 loff_t offset, loff_t len)
61 struct inode *inode = file_inode(filep);
62 struct nfs_server *server = NFS_SERVER(inode);
63 struct nfs4_exception exception = { };
64 struct nfs_lock_context *lock;
67 lock = nfs_get_lock_context(nfs_file_open_context(filep));
71 exception.inode = inode;
72 exception.state = lock->open_context->state;
74 err = nfs_sync_inode(inode);
79 err = _nfs42_proc_fallocate(msg, filep, lock, offset, len);
80 if (err == -ENOTSUPP) {
84 err = nfs4_handle_exception(server, err, &exception);
85 } while (exception.retry);
87 nfs_put_lock_context(lock);
91 int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len)
93 struct rpc_message msg = {
94 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE],
96 struct inode *inode = file_inode(filep);
99 if (!nfs_server_capable(inode, NFS_CAP_ALLOCATE))
104 err = nfs42_proc_fallocate(&msg, filep, offset, len);
105 if (err == -EOPNOTSUPP)
106 NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE;
112 int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len)
114 struct rpc_message msg = {
115 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DEALLOCATE],
117 struct inode *inode = file_inode(filep);
120 if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE))
125 err = nfs42_proc_fallocate(&msg, filep, offset, len);
127 truncate_pagecache_range(inode, offset, (offset + len) -1);
128 if (err == -EOPNOTSUPP)
129 NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE;
135 static ssize_t _nfs42_proc_copy(struct file *src,
136 struct nfs_lock_context *src_lock,
138 struct nfs_lock_context *dst_lock,
139 struct nfs42_copy_args *args,
140 struct nfs42_copy_res *res)
142 struct rpc_message msg = {
143 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY],
147 struct inode *dst_inode = file_inode(dst);
148 struct nfs_server *server = NFS_SERVER(dst_inode);
149 loff_t pos_src = args->src_pos;
150 loff_t pos_dst = args->dst_pos;
151 size_t count = args->count;
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 res->commit_res.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
174 if (!res->commit_res.verf)
176 status = nfs4_call_sync(server->client, server, &msg,
177 &args->seq_args, &res->seq_res, 0);
178 if (status == -ENOTSUPP)
179 server->caps &= ~NFS_CAP_COPY;
183 if (nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
184 &res->commit_res.verf->verifier)) {
189 truncate_pagecache_range(dst_inode, pos_dst,
190 pos_dst + res->write_res.count);
192 status = res->write_res.count;
194 kfree(res->commit_res.verf);
198 ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
199 struct file *dst, loff_t pos_dst,
202 struct nfs_server *server = NFS_SERVER(file_inode(dst));
203 struct nfs_lock_context *src_lock;
204 struct nfs_lock_context *dst_lock;
205 struct nfs42_copy_args args = {
206 .src_fh = NFS_FH(file_inode(src)),
208 .dst_fh = NFS_FH(file_inode(dst)),
212 struct nfs42_copy_res res;
213 struct nfs4_exception src_exception = {
214 .inode = file_inode(src),
215 .stateid = &args.src_stateid,
217 struct nfs4_exception dst_exception = {
218 .inode = file_inode(dst),
219 .stateid = &args.dst_stateid,
223 if (!nfs_server_capable(file_inode(dst), NFS_CAP_COPY))
226 src_lock = nfs_get_lock_context(nfs_file_open_context(src));
227 if (IS_ERR(src_lock))
228 return PTR_ERR(src_lock);
230 src_exception.state = src_lock->open_context->state;
232 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst));
233 if (IS_ERR(dst_lock)) {
234 err = PTR_ERR(dst_lock);
235 goto out_put_src_lock;
238 dst_exception.state = dst_lock->open_context->state;
241 inode_lock(file_inode(dst));
242 err = _nfs42_proc_copy(src, src_lock,
245 inode_unlock(file_inode(dst));
249 if (err == -ENOTSUPP) {
252 } if (err == -EAGAIN) {
253 dst_exception.retry = 1;
257 err2 = nfs4_handle_exception(server, err, &src_exception);
258 err = nfs4_handle_exception(server, err, &dst_exception);
261 } while (src_exception.retry || dst_exception.retry);
263 nfs_put_lock_context(dst_lock);
265 nfs_put_lock_context(src_lock);
269 static loff_t _nfs42_proc_llseek(struct file *filep,
270 struct nfs_lock_context *lock, loff_t offset, int whence)
272 struct inode *inode = file_inode(filep);
273 struct nfs42_seek_args args = {
274 .sa_fh = NFS_FH(inode),
276 .sa_what = (whence == SEEK_HOLE) ?
277 NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA,
279 struct nfs42_seek_res res;
280 struct rpc_message msg = {
281 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK],
285 struct nfs_server *server = NFS_SERVER(inode);
288 if (!nfs_server_capable(inode, NFS_CAP_SEEK))
291 status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context,
296 status = nfs_filemap_write_and_wait_range(inode->i_mapping,
301 status = nfs4_call_sync(server->client, server, &msg,
302 &args.seq_args, &res.seq_res, 0);
303 if (status == -ENOTSUPP)
304 server->caps &= ~NFS_CAP_SEEK;
308 if (whence == SEEK_DATA && res.sr_eof)
309 return -NFS4ERR_NXIO;
311 return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
314 loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
316 struct nfs_server *server = NFS_SERVER(file_inode(filep));
317 struct nfs4_exception exception = { };
318 struct nfs_lock_context *lock;
321 lock = nfs_get_lock_context(nfs_file_open_context(filep));
323 return PTR_ERR(lock);
325 exception.inode = file_inode(filep);
326 exception.state = lock->open_context->state;
329 err = _nfs42_proc_llseek(filep, lock, offset, whence);
332 if (err == -ENOTSUPP) {
336 err = nfs4_handle_exception(server, err, &exception);
337 } while (exception.retry);
339 nfs_put_lock_context(lock);
345 nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata)
347 struct nfs42_layoutstat_data *data = calldata;
348 struct inode *inode = data->inode;
349 struct nfs_server *server = NFS_SERVER(inode);
350 struct pnfs_layout_hdr *lo;
352 spin_lock(&inode->i_lock);
353 lo = NFS_I(inode)->layout;
354 if (!pnfs_layout_is_valid(lo)) {
355 spin_unlock(&inode->i_lock);
359 nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid);
360 spin_unlock(&inode->i_lock);
361 nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
362 &data->res.seq_res, task);
366 nfs42_layoutstat_done(struct rpc_task *task, void *calldata)
368 struct nfs42_layoutstat_data *data = calldata;
369 struct inode *inode = data->inode;
370 struct pnfs_layout_hdr *lo;
372 if (!nfs4_sequence_done(task, &data->res.seq_res))
375 switch (task->tk_status) {
378 case -NFS4ERR_EXPIRED:
379 case -NFS4ERR_ADMIN_REVOKED:
380 case -NFS4ERR_DELEG_REVOKED:
381 case -NFS4ERR_STALE_STATEID:
382 case -NFS4ERR_BAD_STATEID:
383 spin_lock(&inode->i_lock);
384 lo = NFS_I(inode)->layout;
385 if (pnfs_layout_is_valid(lo) &&
386 nfs4_stateid_match(&data->args.stateid,
391 * Mark the bad layout state as invalid, then retry
392 * with the current stateid.
394 pnfs_mark_layout_stateid_invalid(lo, &head);
395 spin_unlock(&inode->i_lock);
396 pnfs_free_lseg_list(&head);
397 nfs_commit_inode(inode, 0);
399 spin_unlock(&inode->i_lock);
401 case -NFS4ERR_OLD_STATEID:
402 spin_lock(&inode->i_lock);
403 lo = NFS_I(inode)->layout;
404 if (pnfs_layout_is_valid(lo) &&
405 nfs4_stateid_match_other(&data->args.stateid,
407 /* Do we need to delay before resending? */
408 if (!nfs4_stateid_is_newer(&lo->plh_stateid,
409 &data->args.stateid))
411 rpc_restart_call_prepare(task);
413 spin_unlock(&inode->i_lock);
417 NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS;
422 nfs42_layoutstat_release(void *calldata)
424 struct nfs42_layoutstat_data *data = calldata;
425 struct nfs42_layoutstat_devinfo *devinfo = data->args.devinfo;
428 for (i = 0; i < data->args.num_dev; i++) {
429 if (devinfo[i].ld_private.ops && devinfo[i].ld_private.ops->free)
430 devinfo[i].ld_private.ops->free(&devinfo[i].ld_private);
433 pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout);
434 smp_mb__before_atomic();
435 clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags);
436 smp_mb__after_atomic();
437 nfs_iput_and_deactive(data->inode);
438 kfree(data->args.devinfo);
442 static const struct rpc_call_ops nfs42_layoutstat_ops = {
443 .rpc_call_prepare = nfs42_layoutstat_prepare,
444 .rpc_call_done = nfs42_layoutstat_done,
445 .rpc_release = nfs42_layoutstat_release,
448 int nfs42_proc_layoutstats_generic(struct nfs_server *server,
449 struct nfs42_layoutstat_data *data)
451 struct rpc_message msg = {
452 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS],
453 .rpc_argp = &data->args,
454 .rpc_resp = &data->res,
456 struct rpc_task_setup task_setup = {
457 .rpc_client = server->client,
459 .callback_ops = &nfs42_layoutstat_ops,
460 .callback_data = data,
461 .flags = RPC_TASK_ASYNC,
463 struct rpc_task *task;
465 data->inode = nfs_igrab_and_active(data->args.inode);
467 nfs42_layoutstat_release(data);
470 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
471 task = rpc_run_task(&task_setup);
473 return PTR_ERR(task);
478 static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f,
479 struct file *dst_f, struct nfs_lock_context *src_lock,
480 struct nfs_lock_context *dst_lock, loff_t src_offset,
481 loff_t dst_offset, loff_t count)
483 struct inode *src_inode = file_inode(src_f);
484 struct inode *dst_inode = file_inode(dst_f);
485 struct nfs_server *server = NFS_SERVER(dst_inode);
486 struct nfs42_clone_args args = {
487 .src_fh = NFS_FH(src_inode),
488 .dst_fh = NFS_FH(dst_inode),
489 .src_offset = src_offset,
490 .dst_offset = dst_offset,
492 .dst_bitmask = server->cache_consistency_bitmask,
494 struct nfs42_clone_res res = {
499 msg->rpc_argp = &args;
500 msg->rpc_resp = &res;
502 status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context,
503 src_lock, FMODE_READ);
507 status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
508 dst_lock, FMODE_WRITE);
512 res.dst_fattr = nfs_alloc_fattr();
516 status = nfs4_call_sync(server->client, server, msg,
517 &args.seq_args, &res.seq_res, 0);
519 status = nfs_post_op_update_inode(dst_inode, res.dst_fattr);
521 kfree(res.dst_fattr);
525 int nfs42_proc_clone(struct file *src_f, struct file *dst_f,
526 loff_t src_offset, loff_t dst_offset, loff_t count)
528 struct rpc_message msg = {
529 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE],
531 struct inode *inode = file_inode(src_f);
532 struct nfs_server *server = NFS_SERVER(file_inode(src_f));
533 struct nfs_lock_context *src_lock;
534 struct nfs_lock_context *dst_lock;
535 struct nfs4_exception src_exception = { };
536 struct nfs4_exception dst_exception = { };
539 if (!nfs_server_capable(inode, NFS_CAP_CLONE))
542 src_lock = nfs_get_lock_context(nfs_file_open_context(src_f));
543 if (IS_ERR(src_lock))
544 return PTR_ERR(src_lock);
546 src_exception.inode = file_inode(src_f);
547 src_exception.state = src_lock->open_context->state;
549 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f));
550 if (IS_ERR(dst_lock)) {
551 err = PTR_ERR(dst_lock);
552 goto out_put_src_lock;
555 dst_exception.inode = file_inode(dst_f);
556 dst_exception.state = dst_lock->open_context->state;
559 err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock,
560 src_offset, dst_offset, count);
561 if (err == -ENOTSUPP || err == -EOPNOTSUPP) {
562 NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE;
567 err2 = nfs4_handle_exception(server, err, &src_exception);
568 err = nfs4_handle_exception(server, err, &dst_exception);
571 } while (src_exception.retry || dst_exception.retry);
573 nfs_put_lock_context(dst_lock);
575 nfs_put_lock_context(src_lock);