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);
49 u32 bitmask[NFS_BITMASK_SZ];
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 nfs4_bitmask_set(bitmask, server->cache_consistency_bitmask, inode,
73 NFS_INO_INVALID_BLOCKS);
75 res.falloc_fattr = nfs_alloc_fattr();
76 if (!res.falloc_fattr)
79 status = nfs4_call_sync(server->client, server, msg,
80 &args.seq_args, &res.seq_res, 0);
82 status = nfs_post_op_update_inode_force_wcc(inode,
85 if (msg->rpc_proc == &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE])
86 trace_nfs4_fallocate(inode, &args, status);
88 trace_nfs4_deallocate(inode, &args, status);
89 kfree(res.falloc_fattr);
93 static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
94 loff_t offset, loff_t len)
96 struct inode *inode = file_inode(filep);
97 struct nfs_server *server = NFS_SERVER(inode);
98 struct nfs4_exception exception = { };
99 struct nfs_lock_context *lock;
102 lock = nfs_get_lock_context(nfs_file_open_context(filep));
104 return PTR_ERR(lock);
106 exception.inode = inode;
107 exception.state = lock->open_context->state;
109 err = nfs_sync_inode(inode);
114 err = _nfs42_proc_fallocate(msg, filep, lock, offset, len);
115 if (err == -ENOTSUPP) {
119 err = nfs4_handle_exception(server, err, &exception);
120 } while (exception.retry);
122 nfs_put_lock_context(lock);
126 int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len)
128 struct rpc_message msg = {
129 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE],
131 struct inode *inode = file_inode(filep);
134 if (!nfs_server_capable(inode, NFS_CAP_ALLOCATE))
139 err = nfs42_proc_fallocate(&msg, filep, offset, len);
140 if (err == -EOPNOTSUPP)
141 NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE;
147 int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len)
149 struct rpc_message msg = {
150 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DEALLOCATE],
152 struct inode *inode = file_inode(filep);
155 if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE))
160 err = nfs42_proc_fallocate(&msg, filep, offset, len);
162 truncate_pagecache_range(inode, offset, (offset + len) -1);
163 if (err == -EOPNOTSUPP)
164 NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE;
170 static int handle_async_copy(struct nfs42_copy_res *res,
171 struct nfs_server *dst_server,
172 struct nfs_server *src_server,
175 nfs4_stateid *src_stateid,
178 struct nfs4_copy_state *copy, *tmp_copy;
179 int status = NFS4_OK;
180 bool found_pending = false;
181 struct nfs_open_context *dst_ctx = nfs_file_open_context(dst);
182 struct nfs_open_context *src_ctx = nfs_file_open_context(src);
184 copy = kzalloc(sizeof(struct nfs4_copy_state), GFP_NOFS);
188 spin_lock(&dst_server->nfs_client->cl_lock);
189 list_for_each_entry(tmp_copy,
190 &dst_server->nfs_client->pending_cb_stateids,
192 if (memcmp(&res->write_res.stateid, &tmp_copy->stateid,
195 found_pending = true;
196 list_del(&tmp_copy->copies);
200 spin_unlock(&dst_server->nfs_client->cl_lock);
206 memcpy(©->stateid, &res->write_res.stateid, NFS4_STATEID_SIZE);
207 init_completion(©->completion);
208 copy->parent_dst_state = dst_ctx->state;
209 copy->parent_src_state = src_ctx->state;
211 list_add_tail(©->copies, &dst_server->ss_copies);
212 spin_unlock(&dst_server->nfs_client->cl_lock);
214 if (dst_server != src_server) {
215 spin_lock(&src_server->nfs_client->cl_lock);
216 list_add_tail(©->src_copies, &src_server->ss_copies);
217 spin_unlock(&src_server->nfs_client->cl_lock);
220 status = wait_for_completion_interruptible(©->completion);
221 spin_lock(&dst_server->nfs_client->cl_lock);
222 list_del_init(©->copies);
223 spin_unlock(&dst_server->nfs_client->cl_lock);
224 if (dst_server != src_server) {
225 spin_lock(&src_server->nfs_client->cl_lock);
226 list_del_init(©->src_copies);
227 spin_unlock(&src_server->nfs_client->cl_lock);
229 if (status == -ERESTARTSYS) {
231 } else if (copy->flags || copy->error == NFS4ERR_PARTNER_NO_AUTH) {
237 res->write_res.count = copy->count;
238 memcpy(&res->write_res.verifier, ©->verf, sizeof(copy->verf));
239 status = -copy->error;
245 nfs42_do_offload_cancel_async(dst, ©->stateid);
246 if (!nfs42_files_from_same_server(src, dst))
247 nfs42_do_offload_cancel_async(src, src_stateid);
251 static int process_copy_commit(struct file *dst, loff_t pos_dst,
252 struct nfs42_copy_res *res)
254 struct nfs_commitres cres;
255 int status = -ENOMEM;
257 cres.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
261 status = nfs4_proc_commit(dst, pos_dst, res->write_res.count, &cres);
264 if (nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
265 &cres.verf->verifier)) {
266 dprintk("commit verf differs from copy verf\n");
276 * nfs42_copy_dest_done - perform inode cache updates after clone/copy offload
277 * @inode: pointer to destination inode
278 * @pos: destination offset
281 * Punch a hole in the inode page cache, so that the NFS client will
282 * know to retrieve new data.
283 * Update the file size if necessary, and then mark the inode as having
284 * invalid cached values for change attribute, ctime, mtime and space used.
286 static void nfs42_copy_dest_done(struct inode *inode, loff_t pos, loff_t len)
288 loff_t newsize = pos + len;
289 loff_t end = newsize - 1;
291 WARN_ON_ONCE(invalidate_inode_pages2_range(inode->i_mapping,
292 pos >> PAGE_SHIFT, end >> PAGE_SHIFT));
294 spin_lock(&inode->i_lock);
295 if (newsize > i_size_read(inode))
296 i_size_write(inode, newsize);
297 nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE |
298 NFS_INO_INVALID_CTIME |
299 NFS_INO_INVALID_MTIME |
300 NFS_INO_INVALID_BLOCKS);
301 spin_unlock(&inode->i_lock);
304 static ssize_t _nfs42_proc_copy(struct file *src,
305 struct nfs_lock_context *src_lock,
307 struct nfs_lock_context *dst_lock,
308 struct nfs42_copy_args *args,
309 struct nfs42_copy_res *res,
310 struct nl4_server *nss,
311 nfs4_stateid *cnr_stateid,
314 struct rpc_message msg = {
315 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY],
319 struct inode *dst_inode = file_inode(dst);
320 struct inode *src_inode = file_inode(src);
321 struct nfs_server *dst_server = NFS_SERVER(dst_inode);
322 struct nfs_server *src_server = NFS_SERVER(src_inode);
323 loff_t pos_src = args->src_pos;
324 loff_t pos_dst = args->dst_pos;
325 size_t count = args->count;
330 nfs4_stateid_copy(&args->src_stateid, cnr_stateid);
332 status = nfs4_set_rw_stateid(&args->src_stateid,
333 src_lock->open_context, src_lock, FMODE_READ);
335 if (status == -EAGAIN)
336 status = -NFS4ERR_BAD_STATEID;
340 status = nfs_filemap_write_and_wait_range(file_inode(src)->i_mapping,
341 pos_src, pos_src + (loff_t)count - 1);
345 status = nfs4_set_rw_stateid(&args->dst_stateid, dst_lock->open_context,
346 dst_lock, FMODE_WRITE);
348 if (status == -EAGAIN)
349 status = -NFS4ERR_BAD_STATEID;
353 status = nfs_sync_inode(dst_inode);
357 res->commit_res.verf = NULL;
359 res->commit_res.verf =
360 kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
361 if (!res->commit_res.verf)
364 set_bit(NFS_CLNT_SRC_SSC_COPY_STATE,
365 &src_lock->open_context->state->flags);
366 set_bit(NFS_CLNT_DST_SSC_COPY_STATE,
367 &dst_lock->open_context->state->flags);
369 status = nfs4_call_sync(dst_server->client, dst_server, &msg,
370 &args->seq_args, &res->seq_res, 0);
371 trace_nfs4_copy(src_inode, dst_inode, args, res, nss, status);
372 if (status == -ENOTSUPP)
373 dst_server->caps &= ~NFS_CAP_COPY;
378 nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
379 &res->commit_res.verf->verifier)) {
384 if (!res->synchronous) {
385 status = handle_async_copy(res, dst_server, src_server, src,
386 dst, &args->src_stateid, restart);
391 if ((!res->synchronous || !args->sync) &&
392 res->write_res.verifier.committed != NFS_FILE_SYNC) {
393 status = process_copy_commit(dst, pos_dst, res);
398 nfs42_copy_dest_done(dst_inode, pos_dst, res->write_res.count);
399 nfs_invalidate_atime(src_inode);
400 status = res->write_res.count;
403 kfree(res->commit_res.verf);
407 ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
408 struct file *dst, loff_t pos_dst, size_t count,
409 struct nl4_server *nss,
410 nfs4_stateid *cnr_stateid, bool sync)
412 struct nfs_server *server = NFS_SERVER(file_inode(dst));
413 struct nfs_lock_context *src_lock;
414 struct nfs_lock_context *dst_lock;
415 struct nfs42_copy_args args = {
416 .src_fh = NFS_FH(file_inode(src)),
418 .dst_fh = NFS_FH(file_inode(dst)),
423 struct nfs42_copy_res res;
424 struct nfs4_exception src_exception = {
425 .inode = file_inode(src),
426 .stateid = &args.src_stateid,
428 struct nfs4_exception dst_exception = {
429 .inode = file_inode(dst),
430 .stateid = &args.dst_stateid,
433 bool restart = false;
435 src_lock = nfs_get_lock_context(nfs_file_open_context(src));
436 if (IS_ERR(src_lock))
437 return PTR_ERR(src_lock);
439 src_exception.state = src_lock->open_context->state;
441 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst));
442 if (IS_ERR(dst_lock)) {
443 err = PTR_ERR(dst_lock);
444 goto out_put_src_lock;
447 dst_exception.state = dst_lock->open_context->state;
450 inode_lock(file_inode(dst));
451 err = _nfs42_proc_copy(src, src_lock,
454 nss, cnr_stateid, &restart);
455 inode_unlock(file_inode(dst));
459 if (err == -ENOTSUPP &&
460 nfs42_files_from_same_server(src, dst)) {
463 } else if (err == -EAGAIN) {
465 dst_exception.retry = 1;
469 } else if (err == -NFS4ERR_OFFLOAD_NO_REQS && !args.sync) {
471 dst_exception.retry = 1;
473 } else if ((err == -ESTALE ||
474 err == -NFS4ERR_OFFLOAD_DENIED ||
476 !nfs42_files_from_same_server(src, dst)) {
477 nfs42_do_offload_cancel_async(src, &args.src_stateid);
482 err2 = nfs4_handle_exception(server, err, &src_exception);
483 err = nfs4_handle_exception(server, err, &dst_exception);
486 } while (src_exception.retry || dst_exception.retry);
488 nfs_put_lock_context(dst_lock);
490 nfs_put_lock_context(src_lock);
494 struct nfs42_offloadcancel_data {
495 struct nfs_server *seq_server;
496 struct nfs42_offload_status_args args;
497 struct nfs42_offload_status_res res;
500 static void nfs42_offload_cancel_prepare(struct rpc_task *task, void *calldata)
502 struct nfs42_offloadcancel_data *data = calldata;
504 nfs4_setup_sequence(data->seq_server->nfs_client,
505 &data->args.osa_seq_args,
506 &data->res.osr_seq_res, task);
509 static void nfs42_offload_cancel_done(struct rpc_task *task, void *calldata)
511 struct nfs42_offloadcancel_data *data = calldata;
513 trace_nfs4_offload_cancel(&data->args, task->tk_status);
514 nfs41_sequence_done(task, &data->res.osr_seq_res);
515 if (task->tk_status &&
516 nfs4_async_handle_error(task, data->seq_server, NULL,
518 rpc_restart_call_prepare(task);
521 static void nfs42_free_offloadcancel_data(void *data)
526 static const struct rpc_call_ops nfs42_offload_cancel_ops = {
527 .rpc_call_prepare = nfs42_offload_cancel_prepare,
528 .rpc_call_done = nfs42_offload_cancel_done,
529 .rpc_release = nfs42_free_offloadcancel_data,
532 static int nfs42_do_offload_cancel_async(struct file *dst,
533 nfs4_stateid *stateid)
535 struct nfs_server *dst_server = NFS_SERVER(file_inode(dst));
536 struct nfs42_offloadcancel_data *data = NULL;
537 struct nfs_open_context *ctx = nfs_file_open_context(dst);
538 struct rpc_task *task;
539 struct rpc_message msg = {
540 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OFFLOAD_CANCEL],
541 .rpc_cred = ctx->cred,
543 struct rpc_task_setup task_setup_data = {
544 .rpc_client = dst_server->client,
546 .callback_ops = &nfs42_offload_cancel_ops,
547 .workqueue = nfsiod_workqueue,
548 .flags = RPC_TASK_ASYNC,
552 if (!(dst_server->caps & NFS_CAP_OFFLOAD_CANCEL))
555 data = kzalloc(sizeof(struct nfs42_offloadcancel_data), GFP_NOFS);
559 data->seq_server = dst_server;
560 data->args.osa_src_fh = NFS_FH(file_inode(dst));
561 memcpy(&data->args.osa_stateid, stateid,
562 sizeof(data->args.osa_stateid));
563 msg.rpc_argp = &data->args;
564 msg.rpc_resp = &data->res;
565 task_setup_data.callback_data = data;
566 nfs4_init_sequence(&data->args.osa_seq_args, &data->res.osr_seq_res,
568 task = rpc_run_task(&task_setup_data);
570 return PTR_ERR(task);
571 status = rpc_wait_for_completion_task(task);
572 if (status == -ENOTSUPP)
573 dst_server->caps &= ~NFS_CAP_OFFLOAD_CANCEL;
578 static int _nfs42_proc_copy_notify(struct file *src, struct file *dst,
579 struct nfs42_copy_notify_args *args,
580 struct nfs42_copy_notify_res *res)
582 struct nfs_server *src_server = NFS_SERVER(file_inode(src));
583 struct rpc_message msg = {
584 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY_NOTIFY],
589 struct nfs_open_context *ctx;
590 struct nfs_lock_context *l_ctx;
592 ctx = get_nfs_open_context(nfs_file_open_context(src));
593 l_ctx = nfs_get_lock_context(ctx);
595 return PTR_ERR(l_ctx);
597 status = nfs4_set_rw_stateid(&args->cna_src_stateid, ctx, l_ctx,
599 nfs_put_lock_context(l_ctx);
601 if (status == -EAGAIN)
602 status = -NFS4ERR_BAD_STATEID;
606 status = nfs4_call_sync(src_server->client, src_server, &msg,
607 &args->cna_seq_args, &res->cnr_seq_res, 0);
608 trace_nfs4_copy_notify(file_inode(src), args, res, status);
609 if (status == -ENOTSUPP)
610 src_server->caps &= ~NFS_CAP_COPY_NOTIFY;
612 put_nfs_open_context(nfs_file_open_context(src));
616 int nfs42_proc_copy_notify(struct file *src, struct file *dst,
617 struct nfs42_copy_notify_res *res)
619 struct nfs_server *src_server = NFS_SERVER(file_inode(src));
620 struct nfs42_copy_notify_args *args;
621 struct nfs4_exception exception = {
622 .inode = file_inode(src),
626 if (!(src_server->caps & NFS_CAP_COPY_NOTIFY))
629 args = kzalloc(sizeof(struct nfs42_copy_notify_args), GFP_NOFS);
633 args->cna_src_fh = NFS_FH(file_inode(src)),
634 args->cna_dst.nl4_type = NL4_NETADDR;
635 nfs42_set_netaddr(dst, &args->cna_dst.u.nl4_addr);
636 exception.stateid = &args->cna_src_stateid;
639 status = _nfs42_proc_copy_notify(src, dst, args, res);
640 if (status == -ENOTSUPP) {
641 status = -EOPNOTSUPP;
644 status = nfs4_handle_exception(src_server, status, &exception);
645 } while (exception.retry);
652 static loff_t _nfs42_proc_llseek(struct file *filep,
653 struct nfs_lock_context *lock, loff_t offset, int whence)
655 struct inode *inode = file_inode(filep);
656 struct nfs42_seek_args args = {
657 .sa_fh = NFS_FH(inode),
659 .sa_what = (whence == SEEK_HOLE) ?
660 NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA,
662 struct nfs42_seek_res res;
663 struct rpc_message msg = {
664 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK],
668 struct nfs_server *server = NFS_SERVER(inode);
671 if (!nfs_server_capable(inode, NFS_CAP_SEEK))
674 status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context,
677 if (status == -EAGAIN)
678 status = -NFS4ERR_BAD_STATEID;
682 status = nfs_filemap_write_and_wait_range(inode->i_mapping,
687 status = nfs4_call_sync(server->client, server, &msg,
688 &args.seq_args, &res.seq_res, 0);
689 trace_nfs4_llseek(inode, &args, &res, status);
690 if (status == -ENOTSUPP)
691 server->caps &= ~NFS_CAP_SEEK;
695 if (whence == SEEK_DATA && res.sr_eof)
696 return -NFS4ERR_NXIO;
698 return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
701 loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
703 struct nfs_server *server = NFS_SERVER(file_inode(filep));
704 struct nfs4_exception exception = { };
705 struct nfs_lock_context *lock;
708 lock = nfs_get_lock_context(nfs_file_open_context(filep));
710 return PTR_ERR(lock);
712 exception.inode = file_inode(filep);
713 exception.state = lock->open_context->state;
716 err = _nfs42_proc_llseek(filep, lock, offset, whence);
719 if (err == -ENOTSUPP) {
723 err = nfs4_handle_exception(server, err, &exception);
724 } while (exception.retry);
726 nfs_put_lock_context(lock);
732 nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata)
734 struct nfs42_layoutstat_data *data = calldata;
735 struct inode *inode = data->inode;
736 struct nfs_server *server = NFS_SERVER(inode);
737 struct pnfs_layout_hdr *lo;
739 spin_lock(&inode->i_lock);
740 lo = NFS_I(inode)->layout;
741 if (!pnfs_layout_is_valid(lo)) {
742 spin_unlock(&inode->i_lock);
746 nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid);
747 spin_unlock(&inode->i_lock);
748 nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
749 &data->res.seq_res, task);
753 nfs42_layoutstat_done(struct rpc_task *task, void *calldata)
755 struct nfs42_layoutstat_data *data = calldata;
756 struct inode *inode = data->inode;
757 struct pnfs_layout_hdr *lo;
759 if (!nfs4_sequence_done(task, &data->res.seq_res))
762 switch (task->tk_status) {
765 case -NFS4ERR_BADHANDLE:
767 pnfs_destroy_layout(NFS_I(inode));
769 case -NFS4ERR_EXPIRED:
770 case -NFS4ERR_ADMIN_REVOKED:
771 case -NFS4ERR_DELEG_REVOKED:
772 case -NFS4ERR_STALE_STATEID:
773 case -NFS4ERR_BAD_STATEID:
774 spin_lock(&inode->i_lock);
775 lo = NFS_I(inode)->layout;
776 if (pnfs_layout_is_valid(lo) &&
777 nfs4_stateid_match(&data->args.stateid,
782 * Mark the bad layout state as invalid, then retry
783 * with the current stateid.
785 pnfs_mark_layout_stateid_invalid(lo, &head);
786 spin_unlock(&inode->i_lock);
787 pnfs_free_lseg_list(&head);
788 nfs_commit_inode(inode, 0);
790 spin_unlock(&inode->i_lock);
792 case -NFS4ERR_OLD_STATEID:
793 spin_lock(&inode->i_lock);
794 lo = NFS_I(inode)->layout;
795 if (pnfs_layout_is_valid(lo) &&
796 nfs4_stateid_match_other(&data->args.stateid,
798 /* Do we need to delay before resending? */
799 if (!nfs4_stateid_is_newer(&lo->plh_stateid,
800 &data->args.stateid))
802 rpc_restart_call_prepare(task);
804 spin_unlock(&inode->i_lock);
808 NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS;
811 trace_nfs4_layoutstats(inode, &data->args.stateid, task->tk_status);
815 nfs42_layoutstat_release(void *calldata)
817 struct nfs42_layoutstat_data *data = calldata;
818 struct nfs42_layoutstat_devinfo *devinfo = data->args.devinfo;
821 for (i = 0; i < data->args.num_dev; i++) {
822 if (devinfo[i].ld_private.ops && devinfo[i].ld_private.ops->free)
823 devinfo[i].ld_private.ops->free(&devinfo[i].ld_private);
826 pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout);
827 smp_mb__before_atomic();
828 clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags);
829 smp_mb__after_atomic();
830 nfs_iput_and_deactive(data->inode);
831 kfree(data->args.devinfo);
835 static const struct rpc_call_ops nfs42_layoutstat_ops = {
836 .rpc_call_prepare = nfs42_layoutstat_prepare,
837 .rpc_call_done = nfs42_layoutstat_done,
838 .rpc_release = nfs42_layoutstat_release,
841 int nfs42_proc_layoutstats_generic(struct nfs_server *server,
842 struct nfs42_layoutstat_data *data)
844 struct rpc_message msg = {
845 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS],
846 .rpc_argp = &data->args,
847 .rpc_resp = &data->res,
849 struct rpc_task_setup task_setup = {
850 .rpc_client = server->client,
852 .callback_ops = &nfs42_layoutstat_ops,
853 .callback_data = data,
854 .flags = RPC_TASK_ASYNC,
856 struct rpc_task *task;
858 data->inode = nfs_igrab_and_active(data->args.inode);
860 nfs42_layoutstat_release(data);
863 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0);
864 task = rpc_run_task(&task_setup);
866 return PTR_ERR(task);
871 static struct nfs42_layouterror_data *
872 nfs42_alloc_layouterror_data(struct pnfs_layout_segment *lseg, gfp_t gfp_flags)
874 struct nfs42_layouterror_data *data;
875 struct inode *inode = lseg->pls_layout->plh_inode;
877 data = kzalloc(sizeof(*data), gfp_flags);
879 data->args.inode = data->inode = nfs_igrab_and_active(inode);
881 data->lseg = pnfs_get_lseg(lseg);
884 nfs_iput_and_deactive(data->inode);
892 nfs42_free_layouterror_data(struct nfs42_layouterror_data *data)
894 pnfs_put_lseg(data->lseg);
895 nfs_iput_and_deactive(data->inode);
900 nfs42_layouterror_prepare(struct rpc_task *task, void *calldata)
902 struct nfs42_layouterror_data *data = calldata;
903 struct inode *inode = data->inode;
904 struct nfs_server *server = NFS_SERVER(inode);
905 struct pnfs_layout_hdr *lo = data->lseg->pls_layout;
908 spin_lock(&inode->i_lock);
909 if (!pnfs_layout_is_valid(lo)) {
910 spin_unlock(&inode->i_lock);
914 for (i = 0; i < data->args.num_errors; i++)
915 nfs4_stateid_copy(&data->args.errors[i].stateid,
917 spin_unlock(&inode->i_lock);
918 nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
919 &data->res.seq_res, task);
923 nfs42_layouterror_done(struct rpc_task *task, void *calldata)
925 struct nfs42_layouterror_data *data = calldata;
926 struct inode *inode = data->inode;
927 struct pnfs_layout_hdr *lo = data->lseg->pls_layout;
929 if (!nfs4_sequence_done(task, &data->res.seq_res))
932 switch (task->tk_status) {
935 case -NFS4ERR_BADHANDLE:
937 pnfs_destroy_layout(NFS_I(inode));
939 case -NFS4ERR_EXPIRED:
940 case -NFS4ERR_ADMIN_REVOKED:
941 case -NFS4ERR_DELEG_REVOKED:
942 case -NFS4ERR_STALE_STATEID:
943 case -NFS4ERR_BAD_STATEID:
944 spin_lock(&inode->i_lock);
945 if (pnfs_layout_is_valid(lo) &&
946 nfs4_stateid_match(&data->args.errors[0].stateid,
951 * Mark the bad layout state as invalid, then retry
952 * with the current stateid.
954 pnfs_mark_layout_stateid_invalid(lo, &head);
955 spin_unlock(&inode->i_lock);
956 pnfs_free_lseg_list(&head);
957 nfs_commit_inode(inode, 0);
959 spin_unlock(&inode->i_lock);
961 case -NFS4ERR_OLD_STATEID:
962 spin_lock(&inode->i_lock);
963 if (pnfs_layout_is_valid(lo) &&
964 nfs4_stateid_match_other(&data->args.errors[0].stateid,
966 /* Do we need to delay before resending? */
967 if (!nfs4_stateid_is_newer(&lo->plh_stateid,
968 &data->args.errors[0].stateid))
970 rpc_restart_call_prepare(task);
972 spin_unlock(&inode->i_lock);
976 NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTERROR;
979 trace_nfs4_layouterror(inode, &data->args.errors[0].stateid,
984 nfs42_layouterror_release(void *calldata)
986 struct nfs42_layouterror_data *data = calldata;
988 nfs42_free_layouterror_data(data);
991 static const struct rpc_call_ops nfs42_layouterror_ops = {
992 .rpc_call_prepare = nfs42_layouterror_prepare,
993 .rpc_call_done = nfs42_layouterror_done,
994 .rpc_release = nfs42_layouterror_release,
997 int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg,
998 const struct nfs42_layout_error *errors, size_t n)
1000 struct inode *inode = lseg->pls_layout->plh_inode;
1001 struct nfs42_layouterror_data *data;
1002 struct rpc_task *task;
1003 struct rpc_message msg = {
1004 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTERROR],
1006 struct rpc_task_setup task_setup = {
1007 .rpc_message = &msg,
1008 .callback_ops = &nfs42_layouterror_ops,
1009 .flags = RPC_TASK_ASYNC,
1013 if (!nfs_server_capable(inode, NFS_CAP_LAYOUTERROR))
1015 if (n > NFS42_LAYOUTERROR_MAX)
1017 data = nfs42_alloc_layouterror_data(lseg, GFP_NOFS);
1020 for (i = 0; i < n; i++) {
1021 data->args.errors[i] = errors[i];
1022 data->args.num_errors++;
1023 data->res.num_errors++;
1025 msg.rpc_argp = &data->args;
1026 msg.rpc_resp = &data->res;
1027 task_setup.callback_data = data;
1028 task_setup.rpc_client = NFS_SERVER(inode)->client;
1029 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0);
1030 task = rpc_run_task(&task_setup);
1032 return PTR_ERR(task);
1036 EXPORT_SYMBOL_GPL(nfs42_proc_layouterror);
1038 static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f,
1039 struct file *dst_f, struct nfs_lock_context *src_lock,
1040 struct nfs_lock_context *dst_lock, loff_t src_offset,
1041 loff_t dst_offset, loff_t count)
1043 struct inode *src_inode = file_inode(src_f);
1044 struct inode *dst_inode = file_inode(dst_f);
1045 struct nfs_server *server = NFS_SERVER(dst_inode);
1046 __u32 dst_bitmask[NFS_BITMASK_SZ];
1047 struct nfs42_clone_args args = {
1048 .src_fh = NFS_FH(src_inode),
1049 .dst_fh = NFS_FH(dst_inode),
1050 .src_offset = src_offset,
1051 .dst_offset = dst_offset,
1053 .dst_bitmask = dst_bitmask,
1055 struct nfs42_clone_res res = {
1060 msg->rpc_argp = &args;
1061 msg->rpc_resp = &res;
1063 status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context,
1064 src_lock, FMODE_READ);
1066 if (status == -EAGAIN)
1067 status = -NFS4ERR_BAD_STATEID;
1070 status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
1071 dst_lock, FMODE_WRITE);
1073 if (status == -EAGAIN)
1074 status = -NFS4ERR_BAD_STATEID;
1078 res.dst_fattr = nfs_alloc_fattr();
1082 nfs4_bitmask_set(dst_bitmask, server->cache_consistency_bitmask,
1083 dst_inode, NFS_INO_INVALID_BLOCKS);
1085 status = nfs4_call_sync(server->client, server, msg,
1086 &args.seq_args, &res.seq_res, 0);
1087 trace_nfs4_clone(src_inode, dst_inode, &args, status);
1089 nfs42_copy_dest_done(dst_inode, dst_offset, count);
1090 status = nfs_post_op_update_inode(dst_inode, res.dst_fattr);
1093 kfree(res.dst_fattr);
1097 int nfs42_proc_clone(struct file *src_f, struct file *dst_f,
1098 loff_t src_offset, loff_t dst_offset, loff_t count)
1100 struct rpc_message msg = {
1101 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE],
1103 struct inode *inode = file_inode(src_f);
1104 struct nfs_server *server = NFS_SERVER(file_inode(src_f));
1105 struct nfs_lock_context *src_lock;
1106 struct nfs_lock_context *dst_lock;
1107 struct nfs4_exception src_exception = { };
1108 struct nfs4_exception dst_exception = { };
1111 if (!nfs_server_capable(inode, NFS_CAP_CLONE))
1114 src_lock = nfs_get_lock_context(nfs_file_open_context(src_f));
1115 if (IS_ERR(src_lock))
1116 return PTR_ERR(src_lock);
1118 src_exception.inode = file_inode(src_f);
1119 src_exception.state = src_lock->open_context->state;
1121 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f));
1122 if (IS_ERR(dst_lock)) {
1123 err = PTR_ERR(dst_lock);
1124 goto out_put_src_lock;
1127 dst_exception.inode = file_inode(dst_f);
1128 dst_exception.state = dst_lock->open_context->state;
1131 err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock,
1132 src_offset, dst_offset, count);
1133 if (err == -ENOTSUPP || err == -EOPNOTSUPP) {
1134 NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE;
1139 err2 = nfs4_handle_exception(server, err, &src_exception);
1140 err = nfs4_handle_exception(server, err, &dst_exception);
1143 } while (src_exception.retry || dst_exception.retry);
1145 nfs_put_lock_context(dst_lock);
1147 nfs_put_lock_context(src_lock);
1151 #define NFS4XATTR_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
1153 static int _nfs42_proc_removexattr(struct inode *inode, const char *name)
1155 struct nfs_server *server = NFS_SERVER(inode);
1156 struct nfs42_removexattrargs args = {
1157 .fh = NFS_FH(inode),
1160 struct nfs42_removexattrres res;
1161 struct rpc_message msg = {
1162 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVEXATTR],
1167 unsigned long timestamp = jiffies;
1169 ret = nfs4_call_sync(server->client, server, &msg, &args.seq_args,
1172 nfs4_update_changeattr(inode, &res.cinfo, timestamp, 0);
1177 static int _nfs42_proc_setxattr(struct inode *inode, const char *name,
1178 const void *buf, size_t buflen, int flags)
1180 struct nfs_server *server = NFS_SERVER(inode);
1181 struct page *pages[NFS4XATTR_MAXPAGES];
1182 struct nfs42_setxattrargs arg = {
1183 .fh = NFS_FH(inode),
1184 .xattr_pages = pages,
1185 .xattr_len = buflen,
1187 .xattr_flags = flags,
1189 struct nfs42_setxattrres res;
1190 struct rpc_message msg = {
1191 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETXATTR],
1196 unsigned long timestamp = jiffies;
1198 if (buflen > server->sxasize)
1202 np = nfs4_buf_to_pages_noslab(buf, buflen, arg.xattr_pages);
1208 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args,
1211 for (; np > 0; np--)
1212 put_page(pages[np - 1]);
1215 nfs4_update_changeattr(inode, &res.cinfo, timestamp, 0);
1220 static ssize_t _nfs42_proc_getxattr(struct inode *inode, const char *name,
1221 void *buf, size_t buflen, struct page **pages,
1224 struct nfs_server *server = NFS_SERVER(inode);
1225 struct nfs42_getxattrargs arg = {
1226 .fh = NFS_FH(inode),
1229 struct nfs42_getxattrres res;
1230 struct rpc_message msg = {
1231 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETXATTR],
1237 arg.xattr_len = plen;
1238 arg.xattr_pages = pages;
1240 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args,
1246 * Normally, the caching is done one layer up, but for successful
1247 * RPCS, always cache the result here, even if the caller was
1248 * just querying the length, or if the reply was too big for
1249 * the caller. This avoids a second RPC in the case of the
1250 * common query-alloc-retrieve cycle for xattrs.
1252 * Note that xattr_len is always capped to XATTR_SIZE_MAX.
1255 nfs4_xattr_cache_add(inode, name, NULL, pages, res.xattr_len);
1258 if (res.xattr_len > buflen)
1260 _copy_from_pages(buf, pages, 0, res.xattr_len);
1263 return res.xattr_len;
1266 static ssize_t _nfs42_proc_listxattrs(struct inode *inode, void *buf,
1267 size_t buflen, u64 *cookiep, bool *eofp)
1269 struct nfs_server *server = NFS_SERVER(inode);
1270 struct page **pages;
1271 struct nfs42_listxattrsargs arg = {
1272 .fh = NFS_FH(inode),
1275 struct nfs42_listxattrsres res = {
1278 .xattr_len = buflen,
1280 struct rpc_message msg = {
1281 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LISTXATTRS],
1290 res.scratch = alloc_page(GFP_KERNEL);
1294 xdrlen = nfs42_listxattr_xdrsize(buflen);
1295 if (xdrlen > server->lxasize)
1296 xdrlen = server->lxasize;
1297 np = xdrlen / PAGE_SIZE + 1;
1299 pages = kcalloc(np, sizeof(struct page *), GFP_KERNEL);
1301 goto out_free_scratch;
1302 for (i = 0; i < np; i++) {
1303 pages[i] = alloc_page(GFP_KERNEL);
1305 goto out_free_pages;
1308 arg.xattr_pages = pages;
1311 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args,
1316 *cookiep = res.cookie;
1323 __free_page(pages[np]);
1327 __free_page(res.scratch);
1333 ssize_t nfs42_proc_getxattr(struct inode *inode, const char *name,
1334 void *buf, size_t buflen)
1336 struct nfs4_exception exception = { };
1338 struct page **pages;
1340 np = nfs_page_array_len(0, buflen ?: XATTR_SIZE_MAX);
1341 pages = kmalloc_array(np, sizeof(*pages), GFP_KERNEL);
1345 for (i = 0; i < np; i++) {
1346 pages[i] = alloc_page(GFP_KERNEL);
1355 * The GETXATTR op has no length field in the call, and the
1356 * xattr data is at the end of the reply.
1358 * There is no downside in using the page-aligned length. It will
1359 * allow receiving and caching xattrs that are too large for the
1360 * caller but still fit in the page-rounded value.
1363 err = _nfs42_proc_getxattr(inode, name, buf, buflen,
1364 pages, np * PAGE_SIZE);
1367 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1369 } while (exception.retry);
1373 __free_page(pages[np]);
1379 int nfs42_proc_setxattr(struct inode *inode, const char *name,
1380 const void *buf, size_t buflen, int flags)
1382 struct nfs4_exception exception = { };
1386 err = _nfs42_proc_setxattr(inode, name, buf, buflen, flags);
1389 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1391 } while (exception.retry);
1396 ssize_t nfs42_proc_listxattrs(struct inode *inode, void *buf,
1397 size_t buflen, u64 *cookiep, bool *eofp)
1399 struct nfs4_exception exception = { };
1403 err = _nfs42_proc_listxattrs(inode, buf, buflen,
1407 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1409 } while (exception.retry);
1414 int nfs42_proc_removexattr(struct inode *inode, const char *name)
1416 struct nfs4_exception exception = { };
1420 err = _nfs42_proc_removexattr(inode, name);
1423 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1425 } while (exception.retry);