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 && !args.sync) {
448 dst_exception.retry = 1;
450 } else if ((err == -ESTALE ||
451 err == -NFS4ERR_OFFLOAD_DENIED ||
453 !nfs42_files_from_same_server(src, dst)) {
454 nfs42_do_offload_cancel_async(src, &args.src_stateid);
459 err2 = nfs4_handle_exception(server, err, &src_exception);
460 err = nfs4_handle_exception(server, err, &dst_exception);
463 } while (src_exception.retry || dst_exception.retry);
465 nfs_put_lock_context(dst_lock);
467 nfs_put_lock_context(src_lock);
471 struct nfs42_offloadcancel_data {
472 struct nfs_server *seq_server;
473 struct nfs42_offload_status_args args;
474 struct nfs42_offload_status_res res;
477 static void nfs42_offload_cancel_prepare(struct rpc_task *task, void *calldata)
479 struct nfs42_offloadcancel_data *data = calldata;
481 nfs4_setup_sequence(data->seq_server->nfs_client,
482 &data->args.osa_seq_args,
483 &data->res.osr_seq_res, task);
486 static void nfs42_offload_cancel_done(struct rpc_task *task, void *calldata)
488 struct nfs42_offloadcancel_data *data = calldata;
490 nfs41_sequence_done(task, &data->res.osr_seq_res);
491 if (task->tk_status &&
492 nfs4_async_handle_error(task, data->seq_server, NULL,
494 rpc_restart_call_prepare(task);
497 static void nfs42_free_offloadcancel_data(void *data)
502 static const struct rpc_call_ops nfs42_offload_cancel_ops = {
503 .rpc_call_prepare = nfs42_offload_cancel_prepare,
504 .rpc_call_done = nfs42_offload_cancel_done,
505 .rpc_release = nfs42_free_offloadcancel_data,
508 static int nfs42_do_offload_cancel_async(struct file *dst,
509 nfs4_stateid *stateid)
511 struct nfs_server *dst_server = NFS_SERVER(file_inode(dst));
512 struct nfs42_offloadcancel_data *data = NULL;
513 struct nfs_open_context *ctx = nfs_file_open_context(dst);
514 struct rpc_task *task;
515 struct rpc_message msg = {
516 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OFFLOAD_CANCEL],
517 .rpc_cred = ctx->cred,
519 struct rpc_task_setup task_setup_data = {
520 .rpc_client = dst_server->client,
522 .callback_ops = &nfs42_offload_cancel_ops,
523 .workqueue = nfsiod_workqueue,
524 .flags = RPC_TASK_ASYNC,
528 if (!(dst_server->caps & NFS_CAP_OFFLOAD_CANCEL))
531 data = kzalloc(sizeof(struct nfs42_offloadcancel_data), GFP_NOFS);
535 data->seq_server = dst_server;
536 data->args.osa_src_fh = NFS_FH(file_inode(dst));
537 memcpy(&data->args.osa_stateid, stateid,
538 sizeof(data->args.osa_stateid));
539 msg.rpc_argp = &data->args;
540 msg.rpc_resp = &data->res;
541 task_setup_data.callback_data = data;
542 nfs4_init_sequence(&data->args.osa_seq_args, &data->res.osr_seq_res,
544 task = rpc_run_task(&task_setup_data);
546 return PTR_ERR(task);
547 status = rpc_wait_for_completion_task(task);
548 if (status == -ENOTSUPP)
549 dst_server->caps &= ~NFS_CAP_OFFLOAD_CANCEL;
554 static int _nfs42_proc_copy_notify(struct file *src, struct file *dst,
555 struct nfs42_copy_notify_args *args,
556 struct nfs42_copy_notify_res *res)
558 struct nfs_server *src_server = NFS_SERVER(file_inode(src));
559 struct rpc_message msg = {
560 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY_NOTIFY],
565 struct nfs_open_context *ctx;
566 struct nfs_lock_context *l_ctx;
568 ctx = get_nfs_open_context(nfs_file_open_context(src));
569 l_ctx = nfs_get_lock_context(ctx);
571 status = PTR_ERR(l_ctx);
575 status = nfs4_set_rw_stateid(&args->cna_src_stateid, ctx, l_ctx,
577 nfs_put_lock_context(l_ctx);
579 if (status == -EAGAIN)
580 status = -NFS4ERR_BAD_STATEID;
584 status = nfs4_call_sync(src_server->client, src_server, &msg,
585 &args->cna_seq_args, &res->cnr_seq_res, 0);
586 if (status == -ENOTSUPP)
587 src_server->caps &= ~NFS_CAP_COPY_NOTIFY;
590 put_nfs_open_context(nfs_file_open_context(src));
594 int nfs42_proc_copy_notify(struct file *src, struct file *dst,
595 struct nfs42_copy_notify_res *res)
597 struct nfs_server *src_server = NFS_SERVER(file_inode(src));
598 struct nfs42_copy_notify_args *args;
599 struct nfs4_exception exception = {
600 .inode = file_inode(src),
604 if (!(src_server->caps & NFS_CAP_COPY_NOTIFY))
607 args = kzalloc(sizeof(struct nfs42_copy_notify_args), GFP_NOFS);
611 args->cna_src_fh = NFS_FH(file_inode(src)),
612 args->cna_dst.nl4_type = NL4_NETADDR;
613 nfs42_set_netaddr(dst, &args->cna_dst.u.nl4_addr);
614 exception.stateid = &args->cna_src_stateid;
617 status = _nfs42_proc_copy_notify(src, dst, args, res);
618 if (status == -ENOTSUPP) {
619 status = -EOPNOTSUPP;
622 status = nfs4_handle_exception(src_server, status, &exception);
623 } while (exception.retry);
630 static loff_t _nfs42_proc_llseek(struct file *filep,
631 struct nfs_lock_context *lock, loff_t offset, int whence)
633 struct inode *inode = file_inode(filep);
634 struct nfs42_seek_args args = {
635 .sa_fh = NFS_FH(inode),
637 .sa_what = (whence == SEEK_HOLE) ?
638 NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA,
640 struct nfs42_seek_res res;
641 struct rpc_message msg = {
642 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK],
646 struct nfs_server *server = NFS_SERVER(inode);
649 if (!nfs_server_capable(inode, NFS_CAP_SEEK))
652 status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context,
655 if (status == -EAGAIN)
656 status = -NFS4ERR_BAD_STATEID;
660 status = nfs_filemap_write_and_wait_range(inode->i_mapping,
665 status = nfs4_call_sync(server->client, server, &msg,
666 &args.seq_args, &res.seq_res, 0);
667 if (status == -ENOTSUPP)
668 server->caps &= ~NFS_CAP_SEEK;
672 if (whence == SEEK_DATA && res.sr_eof)
673 return -NFS4ERR_NXIO;
675 return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
678 loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
680 struct nfs_server *server = NFS_SERVER(file_inode(filep));
681 struct nfs4_exception exception = { };
682 struct nfs_lock_context *lock;
685 lock = nfs_get_lock_context(nfs_file_open_context(filep));
687 return PTR_ERR(lock);
689 exception.inode = file_inode(filep);
690 exception.state = lock->open_context->state;
693 err = _nfs42_proc_llseek(filep, lock, offset, whence);
696 if (err == -ENOTSUPP) {
700 err = nfs4_handle_exception(server, err, &exception);
701 } while (exception.retry);
703 nfs_put_lock_context(lock);
709 nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata)
711 struct nfs42_layoutstat_data *data = calldata;
712 struct inode *inode = data->inode;
713 struct nfs_server *server = NFS_SERVER(inode);
714 struct pnfs_layout_hdr *lo;
716 spin_lock(&inode->i_lock);
717 lo = NFS_I(inode)->layout;
718 if (!pnfs_layout_is_valid(lo)) {
719 spin_unlock(&inode->i_lock);
723 nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid);
724 spin_unlock(&inode->i_lock);
725 nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
726 &data->res.seq_res, task);
730 nfs42_layoutstat_done(struct rpc_task *task, void *calldata)
732 struct nfs42_layoutstat_data *data = calldata;
733 struct inode *inode = data->inode;
734 struct pnfs_layout_hdr *lo;
736 if (!nfs4_sequence_done(task, &data->res.seq_res))
739 switch (task->tk_status) {
742 case -NFS4ERR_BADHANDLE:
744 pnfs_destroy_layout(NFS_I(inode));
746 case -NFS4ERR_EXPIRED:
747 case -NFS4ERR_ADMIN_REVOKED:
748 case -NFS4ERR_DELEG_REVOKED:
749 case -NFS4ERR_STALE_STATEID:
750 case -NFS4ERR_BAD_STATEID:
751 spin_lock(&inode->i_lock);
752 lo = NFS_I(inode)->layout;
753 if (pnfs_layout_is_valid(lo) &&
754 nfs4_stateid_match(&data->args.stateid,
759 * Mark the bad layout state as invalid, then retry
760 * with the current stateid.
762 pnfs_mark_layout_stateid_invalid(lo, &head);
763 spin_unlock(&inode->i_lock);
764 pnfs_free_lseg_list(&head);
765 nfs_commit_inode(inode, 0);
767 spin_unlock(&inode->i_lock);
769 case -NFS4ERR_OLD_STATEID:
770 spin_lock(&inode->i_lock);
771 lo = NFS_I(inode)->layout;
772 if (pnfs_layout_is_valid(lo) &&
773 nfs4_stateid_match_other(&data->args.stateid,
775 /* Do we need to delay before resending? */
776 if (!nfs4_stateid_is_newer(&lo->plh_stateid,
777 &data->args.stateid))
779 rpc_restart_call_prepare(task);
781 spin_unlock(&inode->i_lock);
785 NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS;
788 trace_nfs4_layoutstats(inode, &data->args.stateid, task->tk_status);
792 nfs42_layoutstat_release(void *calldata)
794 struct nfs42_layoutstat_data *data = calldata;
795 struct nfs42_layoutstat_devinfo *devinfo = data->args.devinfo;
798 for (i = 0; i < data->args.num_dev; i++) {
799 if (devinfo[i].ld_private.ops && devinfo[i].ld_private.ops->free)
800 devinfo[i].ld_private.ops->free(&devinfo[i].ld_private);
803 pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout);
804 smp_mb__before_atomic();
805 clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags);
806 smp_mb__after_atomic();
807 nfs_iput_and_deactive(data->inode);
808 kfree(data->args.devinfo);
812 static const struct rpc_call_ops nfs42_layoutstat_ops = {
813 .rpc_call_prepare = nfs42_layoutstat_prepare,
814 .rpc_call_done = nfs42_layoutstat_done,
815 .rpc_release = nfs42_layoutstat_release,
818 int nfs42_proc_layoutstats_generic(struct nfs_server *server,
819 struct nfs42_layoutstat_data *data)
821 struct rpc_message msg = {
822 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS],
823 .rpc_argp = &data->args,
824 .rpc_resp = &data->res,
826 struct rpc_task_setup task_setup = {
827 .rpc_client = server->client,
829 .callback_ops = &nfs42_layoutstat_ops,
830 .callback_data = data,
831 .flags = RPC_TASK_ASYNC,
833 struct rpc_task *task;
835 data->inode = nfs_igrab_and_active(data->args.inode);
837 nfs42_layoutstat_release(data);
840 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0);
841 task = rpc_run_task(&task_setup);
843 return PTR_ERR(task);
848 static struct nfs42_layouterror_data *
849 nfs42_alloc_layouterror_data(struct pnfs_layout_segment *lseg, gfp_t gfp_flags)
851 struct nfs42_layouterror_data *data;
852 struct inode *inode = lseg->pls_layout->plh_inode;
854 data = kzalloc(sizeof(*data), gfp_flags);
856 data->args.inode = data->inode = nfs_igrab_and_active(inode);
858 data->lseg = pnfs_get_lseg(lseg);
861 nfs_iput_and_deactive(data->inode);
869 nfs42_free_layouterror_data(struct nfs42_layouterror_data *data)
871 pnfs_put_lseg(data->lseg);
872 nfs_iput_and_deactive(data->inode);
877 nfs42_layouterror_prepare(struct rpc_task *task, void *calldata)
879 struct nfs42_layouterror_data *data = calldata;
880 struct inode *inode = data->inode;
881 struct nfs_server *server = NFS_SERVER(inode);
882 struct pnfs_layout_hdr *lo = data->lseg->pls_layout;
885 spin_lock(&inode->i_lock);
886 if (!pnfs_layout_is_valid(lo)) {
887 spin_unlock(&inode->i_lock);
891 for (i = 0; i < data->args.num_errors; i++)
892 nfs4_stateid_copy(&data->args.errors[i].stateid,
894 spin_unlock(&inode->i_lock);
895 nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
896 &data->res.seq_res, task);
900 nfs42_layouterror_done(struct rpc_task *task, void *calldata)
902 struct nfs42_layouterror_data *data = calldata;
903 struct inode *inode = data->inode;
904 struct pnfs_layout_hdr *lo = data->lseg->pls_layout;
906 if (!nfs4_sequence_done(task, &data->res.seq_res))
909 switch (task->tk_status) {
912 case -NFS4ERR_BADHANDLE:
914 pnfs_destroy_layout(NFS_I(inode));
916 case -NFS4ERR_EXPIRED:
917 case -NFS4ERR_ADMIN_REVOKED:
918 case -NFS4ERR_DELEG_REVOKED:
919 case -NFS4ERR_STALE_STATEID:
920 case -NFS4ERR_BAD_STATEID:
921 spin_lock(&inode->i_lock);
922 if (pnfs_layout_is_valid(lo) &&
923 nfs4_stateid_match(&data->args.errors[0].stateid,
928 * Mark the bad layout state as invalid, then retry
929 * with the current stateid.
931 pnfs_mark_layout_stateid_invalid(lo, &head);
932 spin_unlock(&inode->i_lock);
933 pnfs_free_lseg_list(&head);
934 nfs_commit_inode(inode, 0);
936 spin_unlock(&inode->i_lock);
938 case -NFS4ERR_OLD_STATEID:
939 spin_lock(&inode->i_lock);
940 if (pnfs_layout_is_valid(lo) &&
941 nfs4_stateid_match_other(&data->args.errors[0].stateid,
943 /* Do we need to delay before resending? */
944 if (!nfs4_stateid_is_newer(&lo->plh_stateid,
945 &data->args.errors[0].stateid))
947 rpc_restart_call_prepare(task);
949 spin_unlock(&inode->i_lock);
953 NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTERROR;
956 trace_nfs4_layouterror(inode, &data->args.errors[0].stateid,
961 nfs42_layouterror_release(void *calldata)
963 struct nfs42_layouterror_data *data = calldata;
965 nfs42_free_layouterror_data(data);
968 static const struct rpc_call_ops nfs42_layouterror_ops = {
969 .rpc_call_prepare = nfs42_layouterror_prepare,
970 .rpc_call_done = nfs42_layouterror_done,
971 .rpc_release = nfs42_layouterror_release,
974 int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg,
975 const struct nfs42_layout_error *errors, size_t n)
977 struct inode *inode = lseg->pls_layout->plh_inode;
978 struct nfs42_layouterror_data *data;
979 struct rpc_task *task;
980 struct rpc_message msg = {
981 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTERROR],
983 struct rpc_task_setup task_setup = {
985 .callback_ops = &nfs42_layouterror_ops,
986 .flags = RPC_TASK_ASYNC,
990 if (!nfs_server_capable(inode, NFS_CAP_LAYOUTERROR))
992 if (n > NFS42_LAYOUTERROR_MAX)
994 data = nfs42_alloc_layouterror_data(lseg, GFP_NOFS);
997 for (i = 0; i < n; i++) {
998 data->args.errors[i] = errors[i];
999 data->args.num_errors++;
1000 data->res.num_errors++;
1002 msg.rpc_argp = &data->args;
1003 msg.rpc_resp = &data->res;
1004 task_setup.callback_data = data;
1005 task_setup.rpc_client = NFS_SERVER(inode)->client;
1006 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0);
1007 task = rpc_run_task(&task_setup);
1009 return PTR_ERR(task);
1013 EXPORT_SYMBOL_GPL(nfs42_proc_layouterror);
1015 static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f,
1016 struct file *dst_f, struct nfs_lock_context *src_lock,
1017 struct nfs_lock_context *dst_lock, loff_t src_offset,
1018 loff_t dst_offset, loff_t count)
1020 struct inode *src_inode = file_inode(src_f);
1021 struct inode *dst_inode = file_inode(dst_f);
1022 struct nfs_server *server = NFS_SERVER(dst_inode);
1023 struct nfs42_clone_args args = {
1024 .src_fh = NFS_FH(src_inode),
1025 .dst_fh = NFS_FH(dst_inode),
1026 .src_offset = src_offset,
1027 .dst_offset = dst_offset,
1029 .dst_bitmask = server->cache_consistency_bitmask,
1031 struct nfs42_clone_res res = {
1036 msg->rpc_argp = &args;
1037 msg->rpc_resp = &res;
1039 status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context,
1040 src_lock, FMODE_READ);
1042 if (status == -EAGAIN)
1043 status = -NFS4ERR_BAD_STATEID;
1046 status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
1047 dst_lock, FMODE_WRITE);
1049 if (status == -EAGAIN)
1050 status = -NFS4ERR_BAD_STATEID;
1054 res.dst_fattr = nfs_alloc_fattr();
1058 status = nfs4_call_sync(server->client, server, msg,
1059 &args.seq_args, &res.seq_res, 0);
1061 status = nfs_post_op_update_inode(dst_inode, res.dst_fattr);
1063 kfree(res.dst_fattr);
1067 int nfs42_proc_clone(struct file *src_f, struct file *dst_f,
1068 loff_t src_offset, loff_t dst_offset, loff_t count)
1070 struct rpc_message msg = {
1071 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE],
1073 struct inode *inode = file_inode(src_f);
1074 struct nfs_server *server = NFS_SERVER(file_inode(src_f));
1075 struct nfs_lock_context *src_lock;
1076 struct nfs_lock_context *dst_lock;
1077 struct nfs4_exception src_exception = { };
1078 struct nfs4_exception dst_exception = { };
1081 if (!nfs_server_capable(inode, NFS_CAP_CLONE))
1084 src_lock = nfs_get_lock_context(nfs_file_open_context(src_f));
1085 if (IS_ERR(src_lock))
1086 return PTR_ERR(src_lock);
1088 src_exception.inode = file_inode(src_f);
1089 src_exception.state = src_lock->open_context->state;
1091 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f));
1092 if (IS_ERR(dst_lock)) {
1093 err = PTR_ERR(dst_lock);
1094 goto out_put_src_lock;
1097 dst_exception.inode = file_inode(dst_f);
1098 dst_exception.state = dst_lock->open_context->state;
1101 err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock,
1102 src_offset, dst_offset, count);
1103 if (err == -ENOTSUPP || err == -EOPNOTSUPP) {
1104 NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE;
1109 err2 = nfs4_handle_exception(server, err, &src_exception);
1110 err = nfs4_handle_exception(server, err, &dst_exception);
1113 } while (src_exception.retry || dst_exception.retry);
1115 nfs_put_lock_context(dst_lock);
1117 nfs_put_lock_context(src_lock);
1121 #define NFS4XATTR_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
1123 static int _nfs42_proc_removexattr(struct inode *inode, const char *name)
1125 struct nfs_server *server = NFS_SERVER(inode);
1126 struct nfs42_removexattrargs args = {
1127 .fh = NFS_FH(inode),
1130 struct nfs42_removexattrres res;
1131 struct rpc_message msg = {
1132 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVEXATTR],
1137 unsigned long timestamp = jiffies;
1139 ret = nfs4_call_sync(server->client, server, &msg, &args.seq_args,
1142 nfs4_update_changeattr(inode, &res.cinfo, timestamp, 0);
1147 static int _nfs42_proc_setxattr(struct inode *inode, const char *name,
1148 const void *buf, size_t buflen, int flags)
1150 struct nfs_server *server = NFS_SERVER(inode);
1151 struct page *pages[NFS4XATTR_MAXPAGES];
1152 struct nfs42_setxattrargs arg = {
1153 .fh = NFS_FH(inode),
1154 .xattr_pages = pages,
1155 .xattr_len = buflen,
1157 .xattr_flags = flags,
1159 struct nfs42_setxattrres res;
1160 struct rpc_message msg = {
1161 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETXATTR],
1166 unsigned long timestamp = jiffies;
1168 if (buflen > server->sxasize)
1172 np = nfs4_buf_to_pages_noslab(buf, buflen, arg.xattr_pages);
1178 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args,
1181 for (; np > 0; np--)
1182 put_page(pages[np - 1]);
1185 nfs4_update_changeattr(inode, &res.cinfo, timestamp, 0);
1190 static ssize_t _nfs42_proc_getxattr(struct inode *inode, const char *name,
1191 void *buf, size_t buflen)
1193 struct nfs_server *server = NFS_SERVER(inode);
1194 struct page *pages[NFS4XATTR_MAXPAGES] = {};
1195 struct nfs42_getxattrargs arg = {
1196 .fh = NFS_FH(inode),
1197 .xattr_pages = pages,
1198 .xattr_len = buflen,
1201 struct nfs42_getxattrres res;
1202 struct rpc_message msg = {
1203 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETXATTR],
1209 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args,
1215 * Normally, the caching is done one layer up, but for successful
1216 * RPCS, always cache the result here, even if the caller was
1217 * just querying the length, or if the reply was too big for
1218 * the caller. This avoids a second RPC in the case of the
1219 * common query-alloc-retrieve cycle for xattrs.
1221 * Note that xattr_len is always capped to XATTR_SIZE_MAX.
1224 nfs4_xattr_cache_add(inode, name, NULL, pages, res.xattr_len);
1227 if (res.xattr_len > buflen)
1229 _copy_from_pages(buf, pages, 0, res.xattr_len);
1232 np = DIV_ROUND_UP(res.xattr_len, PAGE_SIZE);
1234 __free_page(pages[np]);
1236 return res.xattr_len;
1239 static ssize_t _nfs42_proc_listxattrs(struct inode *inode, void *buf,
1240 size_t buflen, u64 *cookiep, bool *eofp)
1242 struct nfs_server *server = NFS_SERVER(inode);
1243 struct page **pages;
1244 struct nfs42_listxattrsargs arg = {
1245 .fh = NFS_FH(inode),
1248 struct nfs42_listxattrsres res = {
1251 .xattr_len = buflen,
1253 struct rpc_message msg = {
1254 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LISTXATTRS],
1263 res.scratch = alloc_page(GFP_KERNEL);
1267 xdrlen = nfs42_listxattr_xdrsize(buflen);
1268 if (xdrlen > server->lxasize)
1269 xdrlen = server->lxasize;
1270 np = xdrlen / PAGE_SIZE + 1;
1272 pages = kcalloc(np, sizeof(struct page *), GFP_KERNEL);
1274 goto out_free_scratch;
1275 for (i = 0; i < np; i++) {
1276 pages[i] = alloc_page(GFP_KERNEL);
1278 goto out_free_pages;
1281 arg.xattr_pages = pages;
1284 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args,
1289 *cookiep = res.cookie;
1296 __free_page(pages[np]);
1300 __free_page(res.scratch);
1306 ssize_t nfs42_proc_getxattr(struct inode *inode, const char *name,
1307 void *buf, size_t buflen)
1309 struct nfs4_exception exception = { };
1313 err = _nfs42_proc_getxattr(inode, name, buf, buflen);
1316 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1318 } while (exception.retry);
1323 int nfs42_proc_setxattr(struct inode *inode, const char *name,
1324 const void *buf, size_t buflen, int flags)
1326 struct nfs4_exception exception = { };
1330 err = _nfs42_proc_setxattr(inode, name, buf, buflen, flags);
1333 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1335 } while (exception.retry);
1340 ssize_t nfs42_proc_listxattrs(struct inode *inode, void *buf,
1341 size_t buflen, u64 *cookiep, bool *eofp)
1343 struct nfs4_exception exception = { };
1347 err = _nfs42_proc_listxattrs(inode, buf, buflen,
1351 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1353 } while (exception.retry);
1358 int nfs42_proc_removexattr(struct inode *inode, const char *name)
1360 struct nfs4_exception exception = { };
1364 err = _nfs42_proc_removexattr(inode, name);
1367 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1369 } while (exception.retry);