1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com>
6 #include <linux/sunrpc/addr.h>
7 #include <linux/sunrpc/sched.h>
9 #include <linux/nfs3.h>
10 #include <linux/nfs4.h>
11 #include <linux/nfs_xdr.h>
12 #include <linux/nfs_fs.h>
17 #include "nfs4session.h"
19 #include "delegation.h"
20 #include "nfs4trace.h"
22 #define NFSDBG_FACILITY NFSDBG_PROC
23 static int nfs42_do_offload_cancel_async(struct file *dst, nfs4_stateid *std);
25 static void nfs42_set_netaddr(struct file *filep, struct nfs42_netaddr *naddr)
27 struct nfs_client *clp = (NFS_SERVER(file_inode(filep)))->nfs_client;
28 unsigned short port = 2049;
31 naddr->netid_len = scnprintf(naddr->netid,
32 sizeof(naddr->netid), "%s",
33 rpc_peeraddr2str(clp->cl_rpcclient,
35 naddr->addr_len = scnprintf(naddr->addr,
38 rpc_peeraddr2str(clp->cl_rpcclient,
40 port >> 8, port & 255);
44 static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
45 struct nfs_lock_context *lock, loff_t offset, loff_t len)
47 struct inode *inode = file_inode(filep);
48 struct nfs_server *server = NFS_SERVER(inode);
50 struct nfs42_falloc_args args = {
51 .falloc_fh = NFS_FH(inode),
52 .falloc_offset = offset,
54 .falloc_bitmask = bitmask,
56 struct nfs42_falloc_res res = {
57 .falloc_server = server,
61 msg->rpc_argp = &args;
64 status = nfs4_set_rw_stateid(&args.falloc_stateid, lock->open_context,
67 if (status == -EAGAIN)
68 status = -NFS4ERR_BAD_STATEID;
72 memcpy(bitmask, server->cache_consistency_bitmask, sizeof(bitmask));
73 if (server->attr_bitmask[1] & FATTR4_WORD1_SPACE_USED)
74 bitmask[1] |= FATTR4_WORD1_SPACE_USED;
76 res.falloc_fattr = nfs_alloc_fattr();
77 if (!res.falloc_fattr)
80 status = nfs4_call_sync(server->client, server, msg,
81 &args.seq_args, &res.seq_res, 0);
83 status = nfs_post_op_update_inode_force_wcc(inode,
86 kfree(res.falloc_fattr);
90 static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
91 loff_t offset, loff_t len)
93 struct inode *inode = file_inode(filep);
94 struct nfs_server *server = NFS_SERVER(inode);
95 struct nfs4_exception exception = { };
96 struct nfs_lock_context *lock;
99 lock = nfs_get_lock_context(nfs_file_open_context(filep));
101 return PTR_ERR(lock);
103 exception.inode = inode;
104 exception.state = lock->open_context->state;
106 err = nfs_sync_inode(inode);
111 err = _nfs42_proc_fallocate(msg, filep, lock, offset, len);
112 if (err == -ENOTSUPP) {
116 err = nfs4_handle_exception(server, err, &exception);
117 } while (exception.retry);
119 nfs_put_lock_context(lock);
123 int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len)
125 struct rpc_message msg = {
126 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE],
128 struct inode *inode = file_inode(filep);
131 if (!nfs_server_capable(inode, NFS_CAP_ALLOCATE))
136 err = nfs42_proc_fallocate(&msg, filep, offset, len);
137 if (err == -EOPNOTSUPP)
138 NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE;
144 int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len)
146 struct rpc_message msg = {
147 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DEALLOCATE],
149 struct inode *inode = file_inode(filep);
152 if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE))
157 err = nfs42_proc_fallocate(&msg, filep, offset, len);
159 truncate_pagecache_range(inode, offset, (offset + len) -1);
160 if (err == -EOPNOTSUPP)
161 NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE;
167 static int handle_async_copy(struct nfs42_copy_res *res,
168 struct nfs_server *dst_server,
169 struct nfs_server *src_server,
172 nfs4_stateid *src_stateid,
175 struct nfs4_copy_state *copy, *tmp_copy;
176 int status = NFS4_OK;
177 bool found_pending = false;
178 struct nfs_open_context *dst_ctx = nfs_file_open_context(dst);
179 struct nfs_open_context *src_ctx = nfs_file_open_context(src);
181 copy = kzalloc(sizeof(struct nfs4_copy_state), GFP_NOFS);
185 spin_lock(&dst_server->nfs_client->cl_lock);
186 list_for_each_entry(tmp_copy,
187 &dst_server->nfs_client->pending_cb_stateids,
189 if (memcmp(&res->write_res.stateid, &tmp_copy->stateid,
192 found_pending = true;
193 list_del(&tmp_copy->copies);
197 spin_unlock(&dst_server->nfs_client->cl_lock);
203 memcpy(©->stateid, &res->write_res.stateid, NFS4_STATEID_SIZE);
204 init_completion(©->completion);
205 copy->parent_dst_state = dst_ctx->state;
206 copy->parent_src_state = src_ctx->state;
208 list_add_tail(©->copies, &dst_server->ss_copies);
209 spin_unlock(&dst_server->nfs_client->cl_lock);
211 if (dst_server != src_server) {
212 spin_lock(&src_server->nfs_client->cl_lock);
213 list_add_tail(©->src_copies, &src_server->ss_copies);
214 spin_unlock(&src_server->nfs_client->cl_lock);
217 status = wait_for_completion_interruptible(©->completion);
218 spin_lock(&dst_server->nfs_client->cl_lock);
219 list_del_init(©->copies);
220 spin_unlock(&dst_server->nfs_client->cl_lock);
221 if (dst_server != src_server) {
222 spin_lock(&src_server->nfs_client->cl_lock);
223 list_del_init(©->src_copies);
224 spin_unlock(&src_server->nfs_client->cl_lock);
226 if (status == -ERESTARTSYS) {
228 } else if (copy->flags || copy->error == NFS4ERR_PARTNER_NO_AUTH) {
234 res->write_res.count = copy->count;
235 memcpy(&res->write_res.verifier, ©->verf, sizeof(copy->verf));
236 status = -copy->error;
242 nfs42_do_offload_cancel_async(dst, ©->stateid);
243 if (!nfs42_files_from_same_server(src, dst))
244 nfs42_do_offload_cancel_async(src, src_stateid);
248 static int process_copy_commit(struct file *dst, loff_t pos_dst,
249 struct nfs42_copy_res *res)
251 struct nfs_commitres cres;
252 int status = -ENOMEM;
254 cres.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
258 status = nfs4_proc_commit(dst, pos_dst, res->write_res.count, &cres);
261 if (nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
262 &cres.verf->verifier)) {
263 dprintk("commit verf differs from copy verf\n");
272 static ssize_t _nfs42_proc_copy(struct file *src,
273 struct nfs_lock_context *src_lock,
275 struct nfs_lock_context *dst_lock,
276 struct nfs42_copy_args *args,
277 struct nfs42_copy_res *res,
278 struct nl4_server *nss,
279 nfs4_stateid *cnr_stateid,
282 struct rpc_message msg = {
283 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY],
287 struct inode *dst_inode = file_inode(dst);
288 struct inode *src_inode = file_inode(src);
289 struct nfs_server *dst_server = NFS_SERVER(dst_inode);
290 struct nfs_server *src_server = NFS_SERVER(src_inode);
291 loff_t pos_src = args->src_pos;
292 loff_t pos_dst = args->dst_pos;
293 size_t count = args->count;
298 nfs4_stateid_copy(&args->src_stateid, cnr_stateid);
300 status = nfs4_set_rw_stateid(&args->src_stateid,
301 src_lock->open_context, src_lock, FMODE_READ);
303 if (status == -EAGAIN)
304 status = -NFS4ERR_BAD_STATEID;
308 status = nfs_filemap_write_and_wait_range(file_inode(src)->i_mapping,
309 pos_src, pos_src + (loff_t)count - 1);
313 status = nfs4_set_rw_stateid(&args->dst_stateid, dst_lock->open_context,
314 dst_lock, FMODE_WRITE);
316 if (status == -EAGAIN)
317 status = -NFS4ERR_BAD_STATEID;
321 status = nfs_sync_inode(dst_inode);
325 res->commit_res.verf = NULL;
327 res->commit_res.verf =
328 kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
329 if (!res->commit_res.verf)
332 set_bit(NFS_CLNT_SRC_SSC_COPY_STATE,
333 &src_lock->open_context->state->flags);
334 set_bit(NFS_CLNT_DST_SSC_COPY_STATE,
335 &dst_lock->open_context->state->flags);
337 status = nfs4_call_sync(dst_server->client, dst_server, &msg,
338 &args->seq_args, &res->seq_res, 0);
339 if (status == -ENOTSUPP)
340 dst_server->caps &= ~NFS_CAP_COPY;
345 nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
346 &res->commit_res.verf->verifier)) {
351 if (!res->synchronous) {
352 status = handle_async_copy(res, dst_server, src_server, src,
353 dst, &args->src_stateid, restart);
358 if ((!res->synchronous || !args->sync) &&
359 res->write_res.verifier.committed != NFS_FILE_SYNC) {
360 status = process_copy_commit(dst, pos_dst, res);
365 WARN_ON_ONCE(invalidate_inode_pages2_range(dst_inode->i_mapping,
366 pos_dst >> PAGE_SHIFT,
367 (pos_dst + res->write_res.count - 1) >> PAGE_SHIFT));
368 spin_lock(&dst_inode->i_lock);
369 NFS_I(dst_inode)->cache_validity |= (NFS_INO_REVAL_PAGECACHE |
370 NFS_INO_REVAL_FORCED | NFS_INO_INVALID_SIZE |
371 NFS_INO_INVALID_ATTR | NFS_INO_INVALID_DATA);
372 spin_unlock(&dst_inode->i_lock);
373 spin_lock(&src_inode->i_lock);
374 NFS_I(src_inode)->cache_validity |= (NFS_INO_REVAL_PAGECACHE |
375 NFS_INO_REVAL_FORCED | NFS_INO_INVALID_ATIME);
376 spin_unlock(&src_inode->i_lock);
377 status = res->write_res.count;
380 kfree(res->commit_res.verf);
384 ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
385 struct file *dst, loff_t pos_dst, size_t count,
386 struct nl4_server *nss,
387 nfs4_stateid *cnr_stateid, bool sync)
389 struct nfs_server *server = NFS_SERVER(file_inode(dst));
390 struct nfs_lock_context *src_lock;
391 struct nfs_lock_context *dst_lock;
392 struct nfs42_copy_args args = {
393 .src_fh = NFS_FH(file_inode(src)),
395 .dst_fh = NFS_FH(file_inode(dst)),
400 struct nfs42_copy_res res;
401 struct nfs4_exception src_exception = {
402 .inode = file_inode(src),
403 .stateid = &args.src_stateid,
405 struct nfs4_exception dst_exception = {
406 .inode = file_inode(dst),
407 .stateid = &args.dst_stateid,
410 bool restart = false;
412 src_lock = nfs_get_lock_context(nfs_file_open_context(src));
413 if (IS_ERR(src_lock))
414 return PTR_ERR(src_lock);
416 src_exception.state = src_lock->open_context->state;
418 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst));
419 if (IS_ERR(dst_lock)) {
420 err = PTR_ERR(dst_lock);
421 goto out_put_src_lock;
424 dst_exception.state = dst_lock->open_context->state;
427 inode_lock(file_inode(dst));
428 err = _nfs42_proc_copy(src, src_lock,
431 nss, cnr_stateid, &restart);
432 inode_unlock(file_inode(dst));
436 if (err == -ENOTSUPP &&
437 nfs42_files_from_same_server(src, dst)) {
440 } else if (err == -EAGAIN) {
442 dst_exception.retry = 1;
446 } else if (err == -NFS4ERR_OFFLOAD_NO_REQS &&
447 args.sync != res.synchronous) {
448 args.sync = res.synchronous;
449 dst_exception.retry = 1;
451 } else if ((err == -ESTALE ||
452 err == -NFS4ERR_OFFLOAD_DENIED ||
454 !nfs42_files_from_same_server(src, dst)) {
455 nfs42_do_offload_cancel_async(src, &args.src_stateid);
460 err2 = nfs4_handle_exception(server, err, &src_exception);
461 err = nfs4_handle_exception(server, err, &dst_exception);
464 } while (src_exception.retry || dst_exception.retry);
466 nfs_put_lock_context(dst_lock);
468 nfs_put_lock_context(src_lock);
472 struct nfs42_offloadcancel_data {
473 struct nfs_server *seq_server;
474 struct nfs42_offload_status_args args;
475 struct nfs42_offload_status_res res;
478 static void nfs42_offload_cancel_prepare(struct rpc_task *task, void *calldata)
480 struct nfs42_offloadcancel_data *data = calldata;
482 nfs4_setup_sequence(data->seq_server->nfs_client,
483 &data->args.osa_seq_args,
484 &data->res.osr_seq_res, task);
487 static void nfs42_offload_cancel_done(struct rpc_task *task, void *calldata)
489 struct nfs42_offloadcancel_data *data = calldata;
491 nfs41_sequence_done(task, &data->res.osr_seq_res);
492 if (task->tk_status &&
493 nfs4_async_handle_error(task, data->seq_server, NULL,
495 rpc_restart_call_prepare(task);
498 static void nfs42_free_offloadcancel_data(void *data)
503 static const struct rpc_call_ops nfs42_offload_cancel_ops = {
504 .rpc_call_prepare = nfs42_offload_cancel_prepare,
505 .rpc_call_done = nfs42_offload_cancel_done,
506 .rpc_release = nfs42_free_offloadcancel_data,
509 static int nfs42_do_offload_cancel_async(struct file *dst,
510 nfs4_stateid *stateid)
512 struct nfs_server *dst_server = NFS_SERVER(file_inode(dst));
513 struct nfs42_offloadcancel_data *data = NULL;
514 struct nfs_open_context *ctx = nfs_file_open_context(dst);
515 struct rpc_task *task;
516 struct rpc_message msg = {
517 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OFFLOAD_CANCEL],
518 .rpc_cred = ctx->cred,
520 struct rpc_task_setup task_setup_data = {
521 .rpc_client = dst_server->client,
523 .callback_ops = &nfs42_offload_cancel_ops,
524 .workqueue = nfsiod_workqueue,
525 .flags = RPC_TASK_ASYNC,
529 if (!(dst_server->caps & NFS_CAP_OFFLOAD_CANCEL))
532 data = kzalloc(sizeof(struct nfs42_offloadcancel_data), GFP_NOFS);
536 data->seq_server = dst_server;
537 data->args.osa_src_fh = NFS_FH(file_inode(dst));
538 memcpy(&data->args.osa_stateid, stateid,
539 sizeof(data->args.osa_stateid));
540 msg.rpc_argp = &data->args;
541 msg.rpc_resp = &data->res;
542 task_setup_data.callback_data = data;
543 nfs4_init_sequence(&data->args.osa_seq_args, &data->res.osr_seq_res,
545 task = rpc_run_task(&task_setup_data);
547 return PTR_ERR(task);
548 status = rpc_wait_for_completion_task(task);
549 if (status == -ENOTSUPP)
550 dst_server->caps &= ~NFS_CAP_OFFLOAD_CANCEL;
555 static int _nfs42_proc_copy_notify(struct file *src, struct file *dst,
556 struct nfs42_copy_notify_args *args,
557 struct nfs42_copy_notify_res *res)
559 struct nfs_server *src_server = NFS_SERVER(file_inode(src));
560 struct rpc_message msg = {
561 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY_NOTIFY],
566 struct nfs_open_context *ctx;
567 struct nfs_lock_context *l_ctx;
569 ctx = get_nfs_open_context(nfs_file_open_context(src));
570 l_ctx = nfs_get_lock_context(ctx);
572 status = PTR_ERR(l_ctx);
576 status = nfs4_set_rw_stateid(&args->cna_src_stateid, ctx, l_ctx,
578 nfs_put_lock_context(l_ctx);
580 if (status == -EAGAIN)
581 status = -NFS4ERR_BAD_STATEID;
585 status = nfs4_call_sync(src_server->client, src_server, &msg,
586 &args->cna_seq_args, &res->cnr_seq_res, 0);
587 if (status == -ENOTSUPP)
588 src_server->caps &= ~NFS_CAP_COPY_NOTIFY;
591 put_nfs_open_context(nfs_file_open_context(src));
595 int nfs42_proc_copy_notify(struct file *src, struct file *dst,
596 struct nfs42_copy_notify_res *res)
598 struct nfs_server *src_server = NFS_SERVER(file_inode(src));
599 struct nfs42_copy_notify_args *args;
600 struct nfs4_exception exception = {
601 .inode = file_inode(src),
605 if (!(src_server->caps & NFS_CAP_COPY_NOTIFY))
608 args = kzalloc(sizeof(struct nfs42_copy_notify_args), GFP_NOFS);
612 args->cna_src_fh = NFS_FH(file_inode(src)),
613 args->cna_dst.nl4_type = NL4_NETADDR;
614 nfs42_set_netaddr(dst, &args->cna_dst.u.nl4_addr);
615 exception.stateid = &args->cna_src_stateid;
618 status = _nfs42_proc_copy_notify(src, dst, args, res);
619 if (status == -ENOTSUPP) {
620 status = -EOPNOTSUPP;
623 status = nfs4_handle_exception(src_server, status, &exception);
624 } while (exception.retry);
631 static loff_t _nfs42_proc_llseek(struct file *filep,
632 struct nfs_lock_context *lock, loff_t offset, int whence)
634 struct inode *inode = file_inode(filep);
635 struct nfs42_seek_args args = {
636 .sa_fh = NFS_FH(inode),
638 .sa_what = (whence == SEEK_HOLE) ?
639 NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA,
641 struct nfs42_seek_res res;
642 struct rpc_message msg = {
643 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK],
647 struct nfs_server *server = NFS_SERVER(inode);
650 if (!nfs_server_capable(inode, NFS_CAP_SEEK))
653 status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context,
656 if (status == -EAGAIN)
657 status = -NFS4ERR_BAD_STATEID;
661 status = nfs_filemap_write_and_wait_range(inode->i_mapping,
666 status = nfs4_call_sync(server->client, server, &msg,
667 &args.seq_args, &res.seq_res, 0);
668 if (status == -ENOTSUPP)
669 server->caps &= ~NFS_CAP_SEEK;
673 if (whence == SEEK_DATA && res.sr_eof)
674 return -NFS4ERR_NXIO;
676 return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
679 loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
681 struct nfs_server *server = NFS_SERVER(file_inode(filep));
682 struct nfs4_exception exception = { };
683 struct nfs_lock_context *lock;
686 lock = nfs_get_lock_context(nfs_file_open_context(filep));
688 return PTR_ERR(lock);
690 exception.inode = file_inode(filep);
691 exception.state = lock->open_context->state;
694 err = _nfs42_proc_llseek(filep, lock, offset, whence);
697 if (err == -ENOTSUPP) {
701 err = nfs4_handle_exception(server, err, &exception);
702 } while (exception.retry);
704 nfs_put_lock_context(lock);
710 nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata)
712 struct nfs42_layoutstat_data *data = calldata;
713 struct inode *inode = data->inode;
714 struct nfs_server *server = NFS_SERVER(inode);
715 struct pnfs_layout_hdr *lo;
717 spin_lock(&inode->i_lock);
718 lo = NFS_I(inode)->layout;
719 if (!pnfs_layout_is_valid(lo)) {
720 spin_unlock(&inode->i_lock);
724 nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid);
725 spin_unlock(&inode->i_lock);
726 nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
727 &data->res.seq_res, task);
731 nfs42_layoutstat_done(struct rpc_task *task, void *calldata)
733 struct nfs42_layoutstat_data *data = calldata;
734 struct inode *inode = data->inode;
735 struct pnfs_layout_hdr *lo;
737 if (!nfs4_sequence_done(task, &data->res.seq_res))
740 switch (task->tk_status) {
743 case -NFS4ERR_BADHANDLE:
745 pnfs_destroy_layout(NFS_I(inode));
747 case -NFS4ERR_EXPIRED:
748 case -NFS4ERR_ADMIN_REVOKED:
749 case -NFS4ERR_DELEG_REVOKED:
750 case -NFS4ERR_STALE_STATEID:
751 case -NFS4ERR_BAD_STATEID:
752 spin_lock(&inode->i_lock);
753 lo = NFS_I(inode)->layout;
754 if (pnfs_layout_is_valid(lo) &&
755 nfs4_stateid_match(&data->args.stateid,
760 * Mark the bad layout state as invalid, then retry
761 * with the current stateid.
763 pnfs_mark_layout_stateid_invalid(lo, &head);
764 spin_unlock(&inode->i_lock);
765 pnfs_free_lseg_list(&head);
766 nfs_commit_inode(inode, 0);
768 spin_unlock(&inode->i_lock);
770 case -NFS4ERR_OLD_STATEID:
771 spin_lock(&inode->i_lock);
772 lo = NFS_I(inode)->layout;
773 if (pnfs_layout_is_valid(lo) &&
774 nfs4_stateid_match_other(&data->args.stateid,
776 /* Do we need to delay before resending? */
777 if (!nfs4_stateid_is_newer(&lo->plh_stateid,
778 &data->args.stateid))
780 rpc_restart_call_prepare(task);
782 spin_unlock(&inode->i_lock);
786 NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS;
789 trace_nfs4_layoutstats(inode, &data->args.stateid, task->tk_status);
793 nfs42_layoutstat_release(void *calldata)
795 struct nfs42_layoutstat_data *data = calldata;
796 struct nfs42_layoutstat_devinfo *devinfo = data->args.devinfo;
799 for (i = 0; i < data->args.num_dev; i++) {
800 if (devinfo[i].ld_private.ops && devinfo[i].ld_private.ops->free)
801 devinfo[i].ld_private.ops->free(&devinfo[i].ld_private);
804 pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout);
805 smp_mb__before_atomic();
806 clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags);
807 smp_mb__after_atomic();
808 nfs_iput_and_deactive(data->inode);
809 kfree(data->args.devinfo);
813 static const struct rpc_call_ops nfs42_layoutstat_ops = {
814 .rpc_call_prepare = nfs42_layoutstat_prepare,
815 .rpc_call_done = nfs42_layoutstat_done,
816 .rpc_release = nfs42_layoutstat_release,
819 int nfs42_proc_layoutstats_generic(struct nfs_server *server,
820 struct nfs42_layoutstat_data *data)
822 struct rpc_message msg = {
823 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS],
824 .rpc_argp = &data->args,
825 .rpc_resp = &data->res,
827 struct rpc_task_setup task_setup = {
828 .rpc_client = server->client,
830 .callback_ops = &nfs42_layoutstat_ops,
831 .callback_data = data,
832 .flags = RPC_TASK_ASYNC,
834 struct rpc_task *task;
836 data->inode = nfs_igrab_and_active(data->args.inode);
838 nfs42_layoutstat_release(data);
841 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0);
842 task = rpc_run_task(&task_setup);
844 return PTR_ERR(task);
849 static struct nfs42_layouterror_data *
850 nfs42_alloc_layouterror_data(struct pnfs_layout_segment *lseg, gfp_t gfp_flags)
852 struct nfs42_layouterror_data *data;
853 struct inode *inode = lseg->pls_layout->plh_inode;
855 data = kzalloc(sizeof(*data), gfp_flags);
857 data->args.inode = data->inode = nfs_igrab_and_active(inode);
859 data->lseg = pnfs_get_lseg(lseg);
862 nfs_iput_and_deactive(data->inode);
870 nfs42_free_layouterror_data(struct nfs42_layouterror_data *data)
872 pnfs_put_lseg(data->lseg);
873 nfs_iput_and_deactive(data->inode);
878 nfs42_layouterror_prepare(struct rpc_task *task, void *calldata)
880 struct nfs42_layouterror_data *data = calldata;
881 struct inode *inode = data->inode;
882 struct nfs_server *server = NFS_SERVER(inode);
883 struct pnfs_layout_hdr *lo = data->lseg->pls_layout;
886 spin_lock(&inode->i_lock);
887 if (!pnfs_layout_is_valid(lo)) {
888 spin_unlock(&inode->i_lock);
892 for (i = 0; i < data->args.num_errors; i++)
893 nfs4_stateid_copy(&data->args.errors[i].stateid,
895 spin_unlock(&inode->i_lock);
896 nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
897 &data->res.seq_res, task);
901 nfs42_layouterror_done(struct rpc_task *task, void *calldata)
903 struct nfs42_layouterror_data *data = calldata;
904 struct inode *inode = data->inode;
905 struct pnfs_layout_hdr *lo = data->lseg->pls_layout;
907 if (!nfs4_sequence_done(task, &data->res.seq_res))
910 switch (task->tk_status) {
913 case -NFS4ERR_BADHANDLE:
915 pnfs_destroy_layout(NFS_I(inode));
917 case -NFS4ERR_EXPIRED:
918 case -NFS4ERR_ADMIN_REVOKED:
919 case -NFS4ERR_DELEG_REVOKED:
920 case -NFS4ERR_STALE_STATEID:
921 case -NFS4ERR_BAD_STATEID:
922 spin_lock(&inode->i_lock);
923 if (pnfs_layout_is_valid(lo) &&
924 nfs4_stateid_match(&data->args.errors[0].stateid,
929 * Mark the bad layout state as invalid, then retry
930 * with the current stateid.
932 pnfs_mark_layout_stateid_invalid(lo, &head);
933 spin_unlock(&inode->i_lock);
934 pnfs_free_lseg_list(&head);
935 nfs_commit_inode(inode, 0);
937 spin_unlock(&inode->i_lock);
939 case -NFS4ERR_OLD_STATEID:
940 spin_lock(&inode->i_lock);
941 if (pnfs_layout_is_valid(lo) &&
942 nfs4_stateid_match_other(&data->args.errors[0].stateid,
944 /* Do we need to delay before resending? */
945 if (!nfs4_stateid_is_newer(&lo->plh_stateid,
946 &data->args.errors[0].stateid))
948 rpc_restart_call_prepare(task);
950 spin_unlock(&inode->i_lock);
954 NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTERROR;
957 trace_nfs4_layouterror(inode, &data->args.errors[0].stateid,
962 nfs42_layouterror_release(void *calldata)
964 struct nfs42_layouterror_data *data = calldata;
966 nfs42_free_layouterror_data(data);
969 static const struct rpc_call_ops nfs42_layouterror_ops = {
970 .rpc_call_prepare = nfs42_layouterror_prepare,
971 .rpc_call_done = nfs42_layouterror_done,
972 .rpc_release = nfs42_layouterror_release,
975 int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg,
976 const struct nfs42_layout_error *errors, size_t n)
978 struct inode *inode = lseg->pls_layout->plh_inode;
979 struct nfs42_layouterror_data *data;
980 struct rpc_task *task;
981 struct rpc_message msg = {
982 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTERROR],
984 struct rpc_task_setup task_setup = {
986 .callback_ops = &nfs42_layouterror_ops,
987 .flags = RPC_TASK_ASYNC,
991 if (!nfs_server_capable(inode, NFS_CAP_LAYOUTERROR))
993 if (n > NFS42_LAYOUTERROR_MAX)
995 data = nfs42_alloc_layouterror_data(lseg, GFP_NOFS);
998 for (i = 0; i < n; i++) {
999 data->args.errors[i] = errors[i];
1000 data->args.num_errors++;
1001 data->res.num_errors++;
1003 msg.rpc_argp = &data->args;
1004 msg.rpc_resp = &data->res;
1005 task_setup.callback_data = data;
1006 task_setup.rpc_client = NFS_SERVER(inode)->client;
1007 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0);
1008 task = rpc_run_task(&task_setup);
1010 return PTR_ERR(task);
1014 EXPORT_SYMBOL_GPL(nfs42_proc_layouterror);
1016 static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f,
1017 struct file *dst_f, struct nfs_lock_context *src_lock,
1018 struct nfs_lock_context *dst_lock, loff_t src_offset,
1019 loff_t dst_offset, loff_t count)
1021 struct inode *src_inode = file_inode(src_f);
1022 struct inode *dst_inode = file_inode(dst_f);
1023 struct nfs_server *server = NFS_SERVER(dst_inode);
1024 struct nfs42_clone_args args = {
1025 .src_fh = NFS_FH(src_inode),
1026 .dst_fh = NFS_FH(dst_inode),
1027 .src_offset = src_offset,
1028 .dst_offset = dst_offset,
1030 .dst_bitmask = server->cache_consistency_bitmask,
1032 struct nfs42_clone_res res = {
1037 msg->rpc_argp = &args;
1038 msg->rpc_resp = &res;
1040 status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context,
1041 src_lock, FMODE_READ);
1043 if (status == -EAGAIN)
1044 status = -NFS4ERR_BAD_STATEID;
1047 status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
1048 dst_lock, FMODE_WRITE);
1050 if (status == -EAGAIN)
1051 status = -NFS4ERR_BAD_STATEID;
1055 res.dst_fattr = nfs_alloc_fattr();
1059 status = nfs4_call_sync(server->client, server, msg,
1060 &args.seq_args, &res.seq_res, 0);
1062 status = nfs_post_op_update_inode(dst_inode, res.dst_fattr);
1064 kfree(res.dst_fattr);
1068 int nfs42_proc_clone(struct file *src_f, struct file *dst_f,
1069 loff_t src_offset, loff_t dst_offset, loff_t count)
1071 struct rpc_message msg = {
1072 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE],
1074 struct inode *inode = file_inode(src_f);
1075 struct nfs_server *server = NFS_SERVER(file_inode(src_f));
1076 struct nfs_lock_context *src_lock;
1077 struct nfs_lock_context *dst_lock;
1078 struct nfs4_exception src_exception = { };
1079 struct nfs4_exception dst_exception = { };
1082 if (!nfs_server_capable(inode, NFS_CAP_CLONE))
1085 src_lock = nfs_get_lock_context(nfs_file_open_context(src_f));
1086 if (IS_ERR(src_lock))
1087 return PTR_ERR(src_lock);
1089 src_exception.inode = file_inode(src_f);
1090 src_exception.state = src_lock->open_context->state;
1092 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f));
1093 if (IS_ERR(dst_lock)) {
1094 err = PTR_ERR(dst_lock);
1095 goto out_put_src_lock;
1098 dst_exception.inode = file_inode(dst_f);
1099 dst_exception.state = dst_lock->open_context->state;
1102 err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock,
1103 src_offset, dst_offset, count);
1104 if (err == -ENOTSUPP || err == -EOPNOTSUPP) {
1105 NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE;
1110 err2 = nfs4_handle_exception(server, err, &src_exception);
1111 err = nfs4_handle_exception(server, err, &dst_exception);
1114 } while (src_exception.retry || dst_exception.retry);
1116 nfs_put_lock_context(dst_lock);
1118 nfs_put_lock_context(src_lock);
1122 #define NFS4XATTR_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
1124 static int _nfs42_proc_removexattr(struct inode *inode, const char *name)
1126 struct nfs_server *server = NFS_SERVER(inode);
1127 struct nfs42_removexattrargs args = {
1128 .fh = NFS_FH(inode),
1131 struct nfs42_removexattrres res;
1132 struct rpc_message msg = {
1133 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVEXATTR],
1138 unsigned long timestamp = jiffies;
1140 ret = nfs4_call_sync(server->client, server, &msg, &args.seq_args,
1143 nfs4_update_changeattr(inode, &res.cinfo, timestamp, 0);
1148 static int _nfs42_proc_setxattr(struct inode *inode, const char *name,
1149 const void *buf, size_t buflen, int flags)
1151 struct nfs_server *server = NFS_SERVER(inode);
1152 struct page *pages[NFS4XATTR_MAXPAGES];
1153 struct nfs42_setxattrargs arg = {
1154 .fh = NFS_FH(inode),
1155 .xattr_pages = pages,
1156 .xattr_len = buflen,
1158 .xattr_flags = flags,
1160 struct nfs42_setxattrres res;
1161 struct rpc_message msg = {
1162 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETXATTR],
1167 unsigned long timestamp = jiffies;
1169 if (buflen > server->sxasize)
1173 np = nfs4_buf_to_pages_noslab(buf, buflen, arg.xattr_pages);
1179 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args,
1182 for (; np > 0; np--)
1183 put_page(pages[np - 1]);
1186 nfs4_update_changeattr(inode, &res.cinfo, timestamp, 0);
1191 static ssize_t _nfs42_proc_getxattr(struct inode *inode, const char *name,
1192 void *buf, size_t buflen)
1194 struct nfs_server *server = NFS_SERVER(inode);
1195 struct page *pages[NFS4XATTR_MAXPAGES] = {};
1196 struct nfs42_getxattrargs arg = {
1197 .fh = NFS_FH(inode),
1198 .xattr_pages = pages,
1199 .xattr_len = buflen,
1202 struct nfs42_getxattrres res;
1203 struct rpc_message msg = {
1204 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETXATTR],
1210 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args,
1216 * Normally, the caching is done one layer up, but for successful
1217 * RPCS, always cache the result here, even if the caller was
1218 * just querying the length, or if the reply was too big for
1219 * the caller. This avoids a second RPC in the case of the
1220 * common query-alloc-retrieve cycle for xattrs.
1222 * Note that xattr_len is always capped to XATTR_SIZE_MAX.
1225 nfs4_xattr_cache_add(inode, name, NULL, pages, res.xattr_len);
1228 if (res.xattr_len > buflen)
1230 _copy_from_pages(buf, pages, 0, res.xattr_len);
1233 np = DIV_ROUND_UP(res.xattr_len, PAGE_SIZE);
1235 __free_page(pages[np]);
1237 return res.xattr_len;
1240 static ssize_t _nfs42_proc_listxattrs(struct inode *inode, void *buf,
1241 size_t buflen, u64 *cookiep, bool *eofp)
1243 struct nfs_server *server = NFS_SERVER(inode);
1244 struct page **pages;
1245 struct nfs42_listxattrsargs arg = {
1246 .fh = NFS_FH(inode),
1249 struct nfs42_listxattrsres res = {
1252 .xattr_len = buflen,
1254 struct rpc_message msg = {
1255 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LISTXATTRS],
1264 res.scratch = alloc_page(GFP_KERNEL);
1268 xdrlen = nfs42_listxattr_xdrsize(buflen);
1269 if (xdrlen > server->lxasize)
1270 xdrlen = server->lxasize;
1271 np = xdrlen / PAGE_SIZE + 1;
1273 pages = kcalloc(np, sizeof(struct page *), GFP_KERNEL);
1275 goto out_free_scratch;
1276 for (i = 0; i < np; i++) {
1277 pages[i] = alloc_page(GFP_KERNEL);
1279 goto out_free_pages;
1282 arg.xattr_pages = pages;
1285 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args,
1290 *cookiep = res.cookie;
1297 __free_page(pages[np]);
1301 __free_page(res.scratch);
1307 ssize_t nfs42_proc_getxattr(struct inode *inode, const char *name,
1308 void *buf, size_t buflen)
1310 struct nfs4_exception exception = { };
1314 err = _nfs42_proc_getxattr(inode, name, buf, buflen);
1317 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1319 } while (exception.retry);
1324 int nfs42_proc_setxattr(struct inode *inode, const char *name,
1325 const void *buf, size_t buflen, int flags)
1327 struct nfs4_exception exception = { };
1331 err = _nfs42_proc_setxattr(inode, name, buf, buflen, flags);
1334 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1336 } while (exception.retry);
1341 ssize_t nfs42_proc_listxattrs(struct inode *inode, void *buf,
1342 size_t buflen, u64 *cookiep, bool *eofp)
1344 struct nfs4_exception exception = { };
1348 err = _nfs42_proc_listxattrs(inode, buf, buflen,
1352 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1354 } while (exception.retry);
1359 int nfs42_proc_removexattr(struct inode *inode, const char *name)
1361 struct nfs4_exception exception = { };
1365 err = _nfs42_proc_removexattr(inode, name);
1368 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1370 } while (exception.retry);