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 WARN_ON_ONCE(invalidate_inode_pages2_range(dst_inode->i_mapping,
190 pos_dst >> PAGE_SHIFT,
191 (pos_dst + res->write_res.count - 1) >> PAGE_SHIFT));
193 status = res->write_res.count;
195 kfree(res->commit_res.verf);
199 ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
200 struct file *dst, loff_t pos_dst,
203 struct nfs_server *server = NFS_SERVER(file_inode(dst));
204 struct nfs_lock_context *src_lock;
205 struct nfs_lock_context *dst_lock;
206 struct nfs42_copy_args args = {
207 .src_fh = NFS_FH(file_inode(src)),
209 .dst_fh = NFS_FH(file_inode(dst)),
213 struct nfs42_copy_res res;
214 struct nfs4_exception src_exception = {
215 .inode = file_inode(src),
216 .stateid = &args.src_stateid,
218 struct nfs4_exception dst_exception = {
219 .inode = file_inode(dst),
220 .stateid = &args.dst_stateid,
224 if (!nfs_server_capable(file_inode(dst), NFS_CAP_COPY))
227 src_lock = nfs_get_lock_context(nfs_file_open_context(src));
228 if (IS_ERR(src_lock))
229 return PTR_ERR(src_lock);
231 src_exception.state = src_lock->open_context->state;
233 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst));
234 if (IS_ERR(dst_lock)) {
235 err = PTR_ERR(dst_lock);
236 goto out_put_src_lock;
239 dst_exception.state = dst_lock->open_context->state;
242 inode_lock(file_inode(dst));
243 err = _nfs42_proc_copy(src, src_lock,
246 inode_unlock(file_inode(dst));
250 if (err == -ENOTSUPP) {
253 } if (err == -EAGAIN) {
254 dst_exception.retry = 1;
258 err2 = nfs4_handle_exception(server, err, &src_exception);
259 err = nfs4_handle_exception(server, err, &dst_exception);
262 } while (src_exception.retry || dst_exception.retry);
264 nfs_put_lock_context(dst_lock);
266 nfs_put_lock_context(src_lock);
270 static loff_t _nfs42_proc_llseek(struct file *filep,
271 struct nfs_lock_context *lock, loff_t offset, int whence)
273 struct inode *inode = file_inode(filep);
274 struct nfs42_seek_args args = {
275 .sa_fh = NFS_FH(inode),
277 .sa_what = (whence == SEEK_HOLE) ?
278 NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA,
280 struct nfs42_seek_res res;
281 struct rpc_message msg = {
282 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK],
286 struct nfs_server *server = NFS_SERVER(inode);
289 if (!nfs_server_capable(inode, NFS_CAP_SEEK))
292 status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context,
297 status = nfs_filemap_write_and_wait_range(inode->i_mapping,
302 status = nfs4_call_sync(server->client, server, &msg,
303 &args.seq_args, &res.seq_res, 0);
304 if (status == -ENOTSUPP)
305 server->caps &= ~NFS_CAP_SEEK;
309 if (whence == SEEK_DATA && res.sr_eof)
310 return -NFS4ERR_NXIO;
312 return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
315 loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
317 struct nfs_server *server = NFS_SERVER(file_inode(filep));
318 struct nfs4_exception exception = { };
319 struct nfs_lock_context *lock;
322 lock = nfs_get_lock_context(nfs_file_open_context(filep));
324 return PTR_ERR(lock);
326 exception.inode = file_inode(filep);
327 exception.state = lock->open_context->state;
330 err = _nfs42_proc_llseek(filep, lock, offset, whence);
333 if (err == -ENOTSUPP) {
337 err = nfs4_handle_exception(server, err, &exception);
338 } while (exception.retry);
340 nfs_put_lock_context(lock);
346 nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata)
348 struct nfs42_layoutstat_data *data = calldata;
349 struct inode *inode = data->inode;
350 struct nfs_server *server = NFS_SERVER(inode);
351 struct pnfs_layout_hdr *lo;
353 spin_lock(&inode->i_lock);
354 lo = NFS_I(inode)->layout;
355 if (!pnfs_layout_is_valid(lo)) {
356 spin_unlock(&inode->i_lock);
360 nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid);
361 spin_unlock(&inode->i_lock);
362 nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
363 &data->res.seq_res, task);
367 nfs42_layoutstat_done(struct rpc_task *task, void *calldata)
369 struct nfs42_layoutstat_data *data = calldata;
370 struct inode *inode = data->inode;
371 struct pnfs_layout_hdr *lo;
373 if (!nfs4_sequence_done(task, &data->res.seq_res))
376 switch (task->tk_status) {
379 case -NFS4ERR_EXPIRED:
380 case -NFS4ERR_ADMIN_REVOKED:
381 case -NFS4ERR_DELEG_REVOKED:
382 case -NFS4ERR_STALE_STATEID:
383 case -NFS4ERR_BAD_STATEID:
384 spin_lock(&inode->i_lock);
385 lo = NFS_I(inode)->layout;
386 if (pnfs_layout_is_valid(lo) &&
387 nfs4_stateid_match(&data->args.stateid,
392 * Mark the bad layout state as invalid, then retry
393 * with the current stateid.
395 pnfs_mark_layout_stateid_invalid(lo, &head);
396 spin_unlock(&inode->i_lock);
397 pnfs_free_lseg_list(&head);
398 nfs_commit_inode(inode, 0);
400 spin_unlock(&inode->i_lock);
402 case -NFS4ERR_OLD_STATEID:
403 spin_lock(&inode->i_lock);
404 lo = NFS_I(inode)->layout;
405 if (pnfs_layout_is_valid(lo) &&
406 nfs4_stateid_match_other(&data->args.stateid,
408 /* Do we need to delay before resending? */
409 if (!nfs4_stateid_is_newer(&lo->plh_stateid,
410 &data->args.stateid))
412 rpc_restart_call_prepare(task);
414 spin_unlock(&inode->i_lock);
418 NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS;
423 nfs42_layoutstat_release(void *calldata)
425 struct nfs42_layoutstat_data *data = calldata;
426 struct nfs42_layoutstat_devinfo *devinfo = data->args.devinfo;
429 for (i = 0; i < data->args.num_dev; i++) {
430 if (devinfo[i].ld_private.ops && devinfo[i].ld_private.ops->free)
431 devinfo[i].ld_private.ops->free(&devinfo[i].ld_private);
434 pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout);
435 smp_mb__before_atomic();
436 clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags);
437 smp_mb__after_atomic();
438 nfs_iput_and_deactive(data->inode);
439 kfree(data->args.devinfo);
443 static const struct rpc_call_ops nfs42_layoutstat_ops = {
444 .rpc_call_prepare = nfs42_layoutstat_prepare,
445 .rpc_call_done = nfs42_layoutstat_done,
446 .rpc_release = nfs42_layoutstat_release,
449 int nfs42_proc_layoutstats_generic(struct nfs_server *server,
450 struct nfs42_layoutstat_data *data)
452 struct rpc_message msg = {
453 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS],
454 .rpc_argp = &data->args,
455 .rpc_resp = &data->res,
457 struct rpc_task_setup task_setup = {
458 .rpc_client = server->client,
460 .callback_ops = &nfs42_layoutstat_ops,
461 .callback_data = data,
462 .flags = RPC_TASK_ASYNC,
464 struct rpc_task *task;
466 data->inode = nfs_igrab_and_active(data->args.inode);
468 nfs42_layoutstat_release(data);
471 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
472 task = rpc_run_task(&task_setup);
474 return PTR_ERR(task);
479 static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f,
480 struct file *dst_f, struct nfs_lock_context *src_lock,
481 struct nfs_lock_context *dst_lock, loff_t src_offset,
482 loff_t dst_offset, loff_t count)
484 struct inode *src_inode = file_inode(src_f);
485 struct inode *dst_inode = file_inode(dst_f);
486 struct nfs_server *server = NFS_SERVER(dst_inode);
487 struct nfs42_clone_args args = {
488 .src_fh = NFS_FH(src_inode),
489 .dst_fh = NFS_FH(dst_inode),
490 .src_offset = src_offset,
491 .dst_offset = dst_offset,
493 .dst_bitmask = server->cache_consistency_bitmask,
495 struct nfs42_clone_res res = {
500 msg->rpc_argp = &args;
501 msg->rpc_resp = &res;
503 status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context,
504 src_lock, FMODE_READ);
508 status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
509 dst_lock, FMODE_WRITE);
513 res.dst_fattr = nfs_alloc_fattr();
517 status = nfs4_call_sync(server->client, server, msg,
518 &args.seq_args, &res.seq_res, 0);
520 status = nfs_post_op_update_inode(dst_inode, res.dst_fattr);
522 kfree(res.dst_fattr);
526 int nfs42_proc_clone(struct file *src_f, struct file *dst_f,
527 loff_t src_offset, loff_t dst_offset, loff_t count)
529 struct rpc_message msg = {
530 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE],
532 struct inode *inode = file_inode(src_f);
533 struct nfs_server *server = NFS_SERVER(file_inode(src_f));
534 struct nfs_lock_context *src_lock;
535 struct nfs_lock_context *dst_lock;
536 struct nfs4_exception src_exception = { };
537 struct nfs4_exception dst_exception = { };
540 if (!nfs_server_capable(inode, NFS_CAP_CLONE))
543 src_lock = nfs_get_lock_context(nfs_file_open_context(src_f));
544 if (IS_ERR(src_lock))
545 return PTR_ERR(src_lock);
547 src_exception.inode = file_inode(src_f);
548 src_exception.state = src_lock->open_context->state;
550 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f));
551 if (IS_ERR(dst_lock)) {
552 err = PTR_ERR(dst_lock);
553 goto out_put_src_lock;
556 dst_exception.inode = file_inode(dst_f);
557 dst_exception.state = dst_lock->open_context->state;
560 err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock,
561 src_offset, dst_offset, count);
562 if (err == -ENOTSUPP || err == -EOPNOTSUPP) {
563 NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE;
568 err2 = nfs4_handle_exception(server, err, &src_exception);
569 err = nfs4_handle_exception(server, err, &dst_exception);
572 } while (src_exception.retry || dst_exception.retry);
574 nfs_put_lock_context(dst_lock);
576 nfs_put_lock_context(src_lock);