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 = NULL, *iter;
179 int status = NFS4_OK;
180 struct nfs_open_context *dst_ctx = nfs_file_open_context(dst);
181 struct nfs_open_context *src_ctx = nfs_file_open_context(src);
183 copy = kzalloc(sizeof(struct nfs4_copy_state), GFP_KERNEL);
187 spin_lock(&dst_server->nfs_client->cl_lock);
188 list_for_each_entry(iter,
189 &dst_server->nfs_client->pending_cb_stateids,
191 if (memcmp(&res->write_res.stateid, &iter->stateid,
195 list_del(&iter->copies);
199 spin_unlock(&dst_server->nfs_client->cl_lock);
205 memcpy(©->stateid, &res->write_res.stateid, NFS4_STATEID_SIZE);
206 init_completion(©->completion);
207 copy->parent_dst_state = dst_ctx->state;
208 copy->parent_src_state = src_ctx->state;
210 list_add_tail(©->copies, &dst_server->ss_copies);
211 spin_unlock(&dst_server->nfs_client->cl_lock);
213 if (dst_server != src_server) {
214 spin_lock(&src_server->nfs_client->cl_lock);
215 list_add_tail(©->src_copies, &src_server->ss_copies);
216 spin_unlock(&src_server->nfs_client->cl_lock);
219 status = wait_for_completion_interruptible(©->completion);
220 spin_lock(&dst_server->nfs_client->cl_lock);
221 list_del_init(©->copies);
222 spin_unlock(&dst_server->nfs_client->cl_lock);
223 if (dst_server != src_server) {
224 spin_lock(&src_server->nfs_client->cl_lock);
225 list_del_init(©->src_copies);
226 spin_unlock(&src_server->nfs_client->cl_lock);
228 if (status == -ERESTARTSYS) {
230 } else if (copy->flags || copy->error == NFS4ERR_PARTNER_NO_AUTH) {
236 res->write_res.count = copy->count;
237 memcpy(&res->write_res.verifier, ©->verf, sizeof(copy->verf));
238 status = -copy->error;
244 nfs42_do_offload_cancel_async(dst, ©->stateid);
245 if (!nfs42_files_from_same_server(src, dst))
246 nfs42_do_offload_cancel_async(src, src_stateid);
250 static int process_copy_commit(struct file *dst, loff_t pos_dst,
251 struct nfs42_copy_res *res)
253 struct nfs_commitres cres;
254 int status = -ENOMEM;
256 cres.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_KERNEL);
260 status = nfs4_proc_commit(dst, pos_dst, res->write_res.count, &cres);
263 if (nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
264 &cres.verf->verifier)) {
265 dprintk("commit verf differs from copy verf\n");
275 * nfs42_copy_dest_done - perform inode cache updates after clone/copy offload
276 * @inode: pointer to destination inode
277 * @pos: destination offset
280 * Punch a hole in the inode page cache, so that the NFS client will
281 * know to retrieve new data.
282 * Update the file size if necessary, and then mark the inode as having
283 * invalid cached values for change attribute, ctime, mtime and space used.
285 static void nfs42_copy_dest_done(struct inode *inode, loff_t pos, loff_t len)
287 loff_t newsize = pos + len;
288 loff_t end = newsize - 1;
290 WARN_ON_ONCE(invalidate_inode_pages2_range(inode->i_mapping,
291 pos >> PAGE_SHIFT, end >> PAGE_SHIFT));
293 spin_lock(&inode->i_lock);
294 if (newsize > i_size_read(inode))
295 i_size_write(inode, newsize);
296 nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE |
297 NFS_INO_INVALID_CTIME |
298 NFS_INO_INVALID_MTIME |
299 NFS_INO_INVALID_BLOCKS);
300 spin_unlock(&inode->i_lock);
303 static ssize_t _nfs42_proc_copy(struct file *src,
304 struct nfs_lock_context *src_lock,
306 struct nfs_lock_context *dst_lock,
307 struct nfs42_copy_args *args,
308 struct nfs42_copy_res *res,
309 struct nl4_server *nss,
310 nfs4_stateid *cnr_stateid,
313 struct rpc_message msg = {
314 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY],
318 struct inode *dst_inode = file_inode(dst);
319 struct inode *src_inode = file_inode(src);
320 struct nfs_server *dst_server = NFS_SERVER(dst_inode);
321 struct nfs_server *src_server = NFS_SERVER(src_inode);
322 loff_t pos_src = args->src_pos;
323 loff_t pos_dst = args->dst_pos;
324 size_t count = args->count;
329 nfs4_stateid_copy(&args->src_stateid, cnr_stateid);
331 status = nfs4_set_rw_stateid(&args->src_stateid,
332 src_lock->open_context, src_lock, FMODE_READ);
334 if (status == -EAGAIN)
335 status = -NFS4ERR_BAD_STATEID;
339 status = nfs_filemap_write_and_wait_range(file_inode(src)->i_mapping,
340 pos_src, pos_src + (loff_t)count - 1);
344 status = nfs4_set_rw_stateid(&args->dst_stateid, dst_lock->open_context,
345 dst_lock, FMODE_WRITE);
347 if (status == -EAGAIN)
348 status = -NFS4ERR_BAD_STATEID;
352 status = nfs_sync_inode(dst_inode);
356 res->commit_res.verf = NULL;
358 res->commit_res.verf =
359 kzalloc(sizeof(struct nfs_writeverf), GFP_KERNEL);
360 if (!res->commit_res.verf)
363 set_bit(NFS_CLNT_SRC_SSC_COPY_STATE,
364 &src_lock->open_context->state->flags);
365 set_bit(NFS_CLNT_DST_SSC_COPY_STATE,
366 &dst_lock->open_context->state->flags);
368 status = nfs4_call_sync(dst_server->client, dst_server, &msg,
369 &args->seq_args, &res->seq_res, 0);
370 trace_nfs4_copy(src_inode, dst_inode, args, res, nss, status);
371 if (status == -ENOTSUPP)
372 dst_server->caps &= ~NFS_CAP_COPY;
377 nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
378 &res->commit_res.verf->verifier)) {
383 if (!res->synchronous) {
384 status = handle_async_copy(res, dst_server, src_server, src,
385 dst, &args->src_stateid, restart);
390 if ((!res->synchronous || !args->sync) &&
391 res->write_res.verifier.committed != NFS_FILE_SYNC) {
392 status = process_copy_commit(dst, pos_dst, res);
397 nfs42_copy_dest_done(dst_inode, pos_dst, res->write_res.count);
398 nfs_invalidate_atime(src_inode);
399 status = res->write_res.count;
402 kfree(res->commit_res.verf);
406 ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
407 struct file *dst, loff_t pos_dst, size_t count,
408 struct nl4_server *nss,
409 nfs4_stateid *cnr_stateid, bool sync)
411 struct nfs_server *server = NFS_SERVER(file_inode(dst));
412 struct nfs_lock_context *src_lock;
413 struct nfs_lock_context *dst_lock;
414 struct nfs42_copy_args args = {
415 .src_fh = NFS_FH(file_inode(src)),
417 .dst_fh = NFS_FH(file_inode(dst)),
422 struct nfs42_copy_res res;
423 struct nfs4_exception src_exception = {
424 .inode = file_inode(src),
425 .stateid = &args.src_stateid,
427 struct nfs4_exception dst_exception = {
428 .inode = file_inode(dst),
429 .stateid = &args.dst_stateid,
432 bool restart = false;
434 src_lock = nfs_get_lock_context(nfs_file_open_context(src));
435 if (IS_ERR(src_lock))
436 return PTR_ERR(src_lock);
438 src_exception.state = src_lock->open_context->state;
440 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst));
441 if (IS_ERR(dst_lock)) {
442 err = PTR_ERR(dst_lock);
443 goto out_put_src_lock;
446 dst_exception.state = dst_lock->open_context->state;
449 inode_lock(file_inode(dst));
450 err = _nfs42_proc_copy(src, src_lock,
453 nss, cnr_stateid, &restart);
454 inode_unlock(file_inode(dst));
458 if (err == -ENOTSUPP &&
459 nfs42_files_from_same_server(src, dst)) {
462 } else if (err == -EAGAIN) {
464 dst_exception.retry = 1;
468 } else if (err == -NFS4ERR_OFFLOAD_NO_REQS && !args.sync) {
470 dst_exception.retry = 1;
472 } else if ((err == -ESTALE ||
473 err == -NFS4ERR_OFFLOAD_DENIED ||
475 !nfs42_files_from_same_server(src, dst)) {
476 nfs42_do_offload_cancel_async(src, &args.src_stateid);
481 err2 = nfs4_handle_exception(server, err, &src_exception);
482 err = nfs4_handle_exception(server, err, &dst_exception);
485 } while (src_exception.retry || dst_exception.retry);
487 nfs_put_lock_context(dst_lock);
489 nfs_put_lock_context(src_lock);
493 struct nfs42_offloadcancel_data {
494 struct nfs_server *seq_server;
495 struct nfs42_offload_status_args args;
496 struct nfs42_offload_status_res res;
499 static void nfs42_offload_cancel_prepare(struct rpc_task *task, void *calldata)
501 struct nfs42_offloadcancel_data *data = calldata;
503 nfs4_setup_sequence(data->seq_server->nfs_client,
504 &data->args.osa_seq_args,
505 &data->res.osr_seq_res, task);
508 static void nfs42_offload_cancel_done(struct rpc_task *task, void *calldata)
510 struct nfs42_offloadcancel_data *data = calldata;
512 trace_nfs4_offload_cancel(&data->args, task->tk_status);
513 nfs41_sequence_done(task, &data->res.osr_seq_res);
514 if (task->tk_status &&
515 nfs4_async_handle_error(task, data->seq_server, NULL,
517 rpc_restart_call_prepare(task);
520 static void nfs42_free_offloadcancel_data(void *data)
525 static const struct rpc_call_ops nfs42_offload_cancel_ops = {
526 .rpc_call_prepare = nfs42_offload_cancel_prepare,
527 .rpc_call_done = nfs42_offload_cancel_done,
528 .rpc_release = nfs42_free_offloadcancel_data,
531 static int nfs42_do_offload_cancel_async(struct file *dst,
532 nfs4_stateid *stateid)
534 struct nfs_server *dst_server = NFS_SERVER(file_inode(dst));
535 struct nfs42_offloadcancel_data *data = NULL;
536 struct nfs_open_context *ctx = nfs_file_open_context(dst);
537 struct rpc_task *task;
538 struct rpc_message msg = {
539 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OFFLOAD_CANCEL],
540 .rpc_cred = ctx->cred,
542 struct rpc_task_setup task_setup_data = {
543 .rpc_client = dst_server->client,
545 .callback_ops = &nfs42_offload_cancel_ops,
546 .workqueue = nfsiod_workqueue,
547 .flags = RPC_TASK_ASYNC,
551 if (!(dst_server->caps & NFS_CAP_OFFLOAD_CANCEL))
554 data = kzalloc(sizeof(struct nfs42_offloadcancel_data), GFP_KERNEL);
558 data->seq_server = dst_server;
559 data->args.osa_src_fh = NFS_FH(file_inode(dst));
560 memcpy(&data->args.osa_stateid, stateid,
561 sizeof(data->args.osa_stateid));
562 msg.rpc_argp = &data->args;
563 msg.rpc_resp = &data->res;
564 task_setup_data.callback_data = data;
565 nfs4_init_sequence(&data->args.osa_seq_args, &data->res.osr_seq_res,
567 task = rpc_run_task(&task_setup_data);
569 return PTR_ERR(task);
570 status = rpc_wait_for_completion_task(task);
571 if (status == -ENOTSUPP)
572 dst_server->caps &= ~NFS_CAP_OFFLOAD_CANCEL;
577 static int _nfs42_proc_copy_notify(struct file *src, struct file *dst,
578 struct nfs42_copy_notify_args *args,
579 struct nfs42_copy_notify_res *res)
581 struct nfs_server *src_server = NFS_SERVER(file_inode(src));
582 struct rpc_message msg = {
583 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY_NOTIFY],
588 struct nfs_open_context *ctx;
589 struct nfs_lock_context *l_ctx;
591 ctx = get_nfs_open_context(nfs_file_open_context(src));
592 l_ctx = nfs_get_lock_context(ctx);
594 status = PTR_ERR(l_ctx);
598 status = nfs4_set_rw_stateid(&args->cna_src_stateid, ctx, l_ctx,
600 nfs_put_lock_context(l_ctx);
602 if (status == -EAGAIN)
603 status = -NFS4ERR_BAD_STATEID;
607 status = nfs4_call_sync(src_server->client, src_server, &msg,
608 &args->cna_seq_args, &res->cnr_seq_res, 0);
609 trace_nfs4_copy_notify(file_inode(src), args, res, status);
610 if (status == -ENOTSUPP)
611 src_server->caps &= ~NFS_CAP_COPY_NOTIFY;
614 put_nfs_open_context(nfs_file_open_context(src));
618 int nfs42_proc_copy_notify(struct file *src, struct file *dst,
619 struct nfs42_copy_notify_res *res)
621 struct nfs_server *src_server = NFS_SERVER(file_inode(src));
622 struct nfs42_copy_notify_args *args;
623 struct nfs4_exception exception = {
624 .inode = file_inode(src),
628 if (!(src_server->caps & NFS_CAP_COPY_NOTIFY))
631 args = kzalloc(sizeof(struct nfs42_copy_notify_args), GFP_KERNEL);
635 args->cna_src_fh = NFS_FH(file_inode(src)),
636 args->cna_dst.nl4_type = NL4_NETADDR;
637 nfs42_set_netaddr(dst, &args->cna_dst.u.nl4_addr);
638 exception.stateid = &args->cna_src_stateid;
641 status = _nfs42_proc_copy_notify(src, dst, args, res);
642 if (status == -ENOTSUPP) {
643 status = -EOPNOTSUPP;
646 status = nfs4_handle_exception(src_server, status, &exception);
647 } while (exception.retry);
654 static loff_t _nfs42_proc_llseek(struct file *filep,
655 struct nfs_lock_context *lock, loff_t offset, int whence)
657 struct inode *inode = file_inode(filep);
658 struct nfs42_seek_args args = {
659 .sa_fh = NFS_FH(inode),
661 .sa_what = (whence == SEEK_HOLE) ?
662 NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA,
664 struct nfs42_seek_res res;
665 struct rpc_message msg = {
666 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK],
670 struct nfs_server *server = NFS_SERVER(inode);
673 if (!nfs_server_capable(inode, NFS_CAP_SEEK))
676 status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context,
679 if (status == -EAGAIN)
680 status = -NFS4ERR_BAD_STATEID;
684 status = nfs_filemap_write_and_wait_range(inode->i_mapping,
689 status = nfs4_call_sync(server->client, server, &msg,
690 &args.seq_args, &res.seq_res, 0);
691 trace_nfs4_llseek(inode, &args, &res, status);
692 if (status == -ENOTSUPP)
693 server->caps &= ~NFS_CAP_SEEK;
697 if (whence == SEEK_DATA && res.sr_eof)
698 return -NFS4ERR_NXIO;
700 return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
703 loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
705 struct nfs_server *server = NFS_SERVER(file_inode(filep));
706 struct nfs4_exception exception = { };
707 struct nfs_lock_context *lock;
710 lock = nfs_get_lock_context(nfs_file_open_context(filep));
712 return PTR_ERR(lock);
714 exception.inode = file_inode(filep);
715 exception.state = lock->open_context->state;
718 err = _nfs42_proc_llseek(filep, lock, offset, whence);
721 if (err == -ENOTSUPP) {
725 err = nfs4_handle_exception(server, err, &exception);
726 } while (exception.retry);
728 nfs_put_lock_context(lock);
734 nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata)
736 struct nfs42_layoutstat_data *data = calldata;
737 struct inode *inode = data->inode;
738 struct nfs_server *server = NFS_SERVER(inode);
739 struct pnfs_layout_hdr *lo;
741 spin_lock(&inode->i_lock);
742 lo = NFS_I(inode)->layout;
743 if (!pnfs_layout_is_valid(lo)) {
744 spin_unlock(&inode->i_lock);
748 nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid);
749 spin_unlock(&inode->i_lock);
750 nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
751 &data->res.seq_res, task);
755 nfs42_layoutstat_done(struct rpc_task *task, void *calldata)
757 struct nfs42_layoutstat_data *data = calldata;
758 struct inode *inode = data->inode;
759 struct pnfs_layout_hdr *lo;
761 if (!nfs4_sequence_done(task, &data->res.seq_res))
764 switch (task->tk_status) {
767 case -NFS4ERR_BADHANDLE:
769 pnfs_destroy_layout(NFS_I(inode));
771 case -NFS4ERR_EXPIRED:
772 case -NFS4ERR_ADMIN_REVOKED:
773 case -NFS4ERR_DELEG_REVOKED:
774 case -NFS4ERR_STALE_STATEID:
775 case -NFS4ERR_BAD_STATEID:
776 spin_lock(&inode->i_lock);
777 lo = NFS_I(inode)->layout;
778 if (pnfs_layout_is_valid(lo) &&
779 nfs4_stateid_match(&data->args.stateid,
784 * Mark the bad layout state as invalid, then retry
785 * with the current stateid.
787 pnfs_mark_layout_stateid_invalid(lo, &head);
788 spin_unlock(&inode->i_lock);
789 pnfs_free_lseg_list(&head);
790 nfs_commit_inode(inode, 0);
792 spin_unlock(&inode->i_lock);
794 case -NFS4ERR_OLD_STATEID:
795 spin_lock(&inode->i_lock);
796 lo = NFS_I(inode)->layout;
797 if (pnfs_layout_is_valid(lo) &&
798 nfs4_stateid_match_other(&data->args.stateid,
800 /* Do we need to delay before resending? */
801 if (!nfs4_stateid_is_newer(&lo->plh_stateid,
802 &data->args.stateid))
804 rpc_restart_call_prepare(task);
806 spin_unlock(&inode->i_lock);
810 NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS;
813 trace_nfs4_layoutstats(inode, &data->args.stateid, task->tk_status);
817 nfs42_layoutstat_release(void *calldata)
819 struct nfs42_layoutstat_data *data = calldata;
820 struct nfs42_layoutstat_devinfo *devinfo = data->args.devinfo;
823 for (i = 0; i < data->args.num_dev; i++) {
824 if (devinfo[i].ld_private.ops && devinfo[i].ld_private.ops->free)
825 devinfo[i].ld_private.ops->free(&devinfo[i].ld_private);
828 pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout);
829 smp_mb__before_atomic();
830 clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags);
831 smp_mb__after_atomic();
832 nfs_iput_and_deactive(data->inode);
833 kfree(data->args.devinfo);
837 static const struct rpc_call_ops nfs42_layoutstat_ops = {
838 .rpc_call_prepare = nfs42_layoutstat_prepare,
839 .rpc_call_done = nfs42_layoutstat_done,
840 .rpc_release = nfs42_layoutstat_release,
843 int nfs42_proc_layoutstats_generic(struct nfs_server *server,
844 struct nfs42_layoutstat_data *data)
846 struct rpc_message msg = {
847 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS],
848 .rpc_argp = &data->args,
849 .rpc_resp = &data->res,
851 struct rpc_task_setup task_setup = {
852 .rpc_client = server->client,
854 .callback_ops = &nfs42_layoutstat_ops,
855 .callback_data = data,
856 .flags = RPC_TASK_ASYNC,
858 struct rpc_task *task;
860 data->inode = nfs_igrab_and_active(data->args.inode);
862 nfs42_layoutstat_release(data);
865 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0);
866 task = rpc_run_task(&task_setup);
868 return PTR_ERR(task);
873 static struct nfs42_layouterror_data *
874 nfs42_alloc_layouterror_data(struct pnfs_layout_segment *lseg, gfp_t gfp_flags)
876 struct nfs42_layouterror_data *data;
877 struct inode *inode = lseg->pls_layout->plh_inode;
879 data = kzalloc(sizeof(*data), gfp_flags);
881 data->args.inode = data->inode = nfs_igrab_and_active(inode);
883 data->lseg = pnfs_get_lseg(lseg);
886 nfs_iput_and_deactive(data->inode);
894 nfs42_free_layouterror_data(struct nfs42_layouterror_data *data)
896 pnfs_put_lseg(data->lseg);
897 nfs_iput_and_deactive(data->inode);
902 nfs42_layouterror_prepare(struct rpc_task *task, void *calldata)
904 struct nfs42_layouterror_data *data = calldata;
905 struct inode *inode = data->inode;
906 struct nfs_server *server = NFS_SERVER(inode);
907 struct pnfs_layout_hdr *lo = data->lseg->pls_layout;
910 spin_lock(&inode->i_lock);
911 if (!pnfs_layout_is_valid(lo)) {
912 spin_unlock(&inode->i_lock);
916 for (i = 0; i < data->args.num_errors; i++)
917 nfs4_stateid_copy(&data->args.errors[i].stateid,
919 spin_unlock(&inode->i_lock);
920 nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
921 &data->res.seq_res, task);
925 nfs42_layouterror_done(struct rpc_task *task, void *calldata)
927 struct nfs42_layouterror_data *data = calldata;
928 struct inode *inode = data->inode;
929 struct pnfs_layout_hdr *lo = data->lseg->pls_layout;
931 if (!nfs4_sequence_done(task, &data->res.seq_res))
934 switch (task->tk_status) {
937 case -NFS4ERR_BADHANDLE:
939 pnfs_destroy_layout(NFS_I(inode));
941 case -NFS4ERR_EXPIRED:
942 case -NFS4ERR_ADMIN_REVOKED:
943 case -NFS4ERR_DELEG_REVOKED:
944 case -NFS4ERR_STALE_STATEID:
945 case -NFS4ERR_BAD_STATEID:
946 spin_lock(&inode->i_lock);
947 if (pnfs_layout_is_valid(lo) &&
948 nfs4_stateid_match(&data->args.errors[0].stateid,
953 * Mark the bad layout state as invalid, then retry
954 * with the current stateid.
956 pnfs_mark_layout_stateid_invalid(lo, &head);
957 spin_unlock(&inode->i_lock);
958 pnfs_free_lseg_list(&head);
959 nfs_commit_inode(inode, 0);
961 spin_unlock(&inode->i_lock);
963 case -NFS4ERR_OLD_STATEID:
964 spin_lock(&inode->i_lock);
965 if (pnfs_layout_is_valid(lo) &&
966 nfs4_stateid_match_other(&data->args.errors[0].stateid,
968 /* Do we need to delay before resending? */
969 if (!nfs4_stateid_is_newer(&lo->plh_stateid,
970 &data->args.errors[0].stateid))
972 rpc_restart_call_prepare(task);
974 spin_unlock(&inode->i_lock);
978 NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTERROR;
981 trace_nfs4_layouterror(inode, &data->args.errors[0].stateid,
986 nfs42_layouterror_release(void *calldata)
988 struct nfs42_layouterror_data *data = calldata;
990 nfs42_free_layouterror_data(data);
993 static const struct rpc_call_ops nfs42_layouterror_ops = {
994 .rpc_call_prepare = nfs42_layouterror_prepare,
995 .rpc_call_done = nfs42_layouterror_done,
996 .rpc_release = nfs42_layouterror_release,
999 int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg,
1000 const struct nfs42_layout_error *errors, size_t n)
1002 struct inode *inode = lseg->pls_layout->plh_inode;
1003 struct nfs42_layouterror_data *data;
1004 struct rpc_task *task;
1005 struct rpc_message msg = {
1006 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTERROR],
1008 struct rpc_task_setup task_setup = {
1009 .rpc_message = &msg,
1010 .callback_ops = &nfs42_layouterror_ops,
1011 .flags = RPC_TASK_ASYNC,
1015 if (!nfs_server_capable(inode, NFS_CAP_LAYOUTERROR))
1017 if (n > NFS42_LAYOUTERROR_MAX)
1019 data = nfs42_alloc_layouterror_data(lseg, nfs_io_gfp_mask());
1022 for (i = 0; i < n; i++) {
1023 data->args.errors[i] = errors[i];
1024 data->args.num_errors++;
1025 data->res.num_errors++;
1027 msg.rpc_argp = &data->args;
1028 msg.rpc_resp = &data->res;
1029 task_setup.callback_data = data;
1030 task_setup.rpc_client = NFS_SERVER(inode)->client;
1031 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0);
1032 task = rpc_run_task(&task_setup);
1034 return PTR_ERR(task);
1038 EXPORT_SYMBOL_GPL(nfs42_proc_layouterror);
1040 static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f,
1041 struct file *dst_f, struct nfs_lock_context *src_lock,
1042 struct nfs_lock_context *dst_lock, loff_t src_offset,
1043 loff_t dst_offset, loff_t count)
1045 struct inode *src_inode = file_inode(src_f);
1046 struct inode *dst_inode = file_inode(dst_f);
1047 struct nfs_server *server = NFS_SERVER(dst_inode);
1048 __u32 dst_bitmask[NFS_BITMASK_SZ];
1049 struct nfs42_clone_args args = {
1050 .src_fh = NFS_FH(src_inode),
1051 .dst_fh = NFS_FH(dst_inode),
1052 .src_offset = src_offset,
1053 .dst_offset = dst_offset,
1055 .dst_bitmask = dst_bitmask,
1057 struct nfs42_clone_res res = {
1062 msg->rpc_argp = &args;
1063 msg->rpc_resp = &res;
1065 status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context,
1066 src_lock, FMODE_READ);
1068 if (status == -EAGAIN)
1069 status = -NFS4ERR_BAD_STATEID;
1072 status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
1073 dst_lock, FMODE_WRITE);
1075 if (status == -EAGAIN)
1076 status = -NFS4ERR_BAD_STATEID;
1080 res.dst_fattr = nfs_alloc_fattr();
1084 nfs4_bitmask_set(dst_bitmask, server->cache_consistency_bitmask,
1085 dst_inode, NFS_INO_INVALID_BLOCKS);
1087 status = nfs4_call_sync(server->client, server, msg,
1088 &args.seq_args, &res.seq_res, 0);
1089 trace_nfs4_clone(src_inode, dst_inode, &args, status);
1091 nfs42_copy_dest_done(dst_inode, dst_offset, count);
1092 status = nfs_post_op_update_inode(dst_inode, res.dst_fattr);
1095 kfree(res.dst_fattr);
1099 int nfs42_proc_clone(struct file *src_f, struct file *dst_f,
1100 loff_t src_offset, loff_t dst_offset, loff_t count)
1102 struct rpc_message msg = {
1103 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE],
1105 struct inode *inode = file_inode(src_f);
1106 struct nfs_server *server = NFS_SERVER(file_inode(src_f));
1107 struct nfs_lock_context *src_lock;
1108 struct nfs_lock_context *dst_lock;
1109 struct nfs4_exception src_exception = { };
1110 struct nfs4_exception dst_exception = { };
1113 if (!nfs_server_capable(inode, NFS_CAP_CLONE))
1116 src_lock = nfs_get_lock_context(nfs_file_open_context(src_f));
1117 if (IS_ERR(src_lock))
1118 return PTR_ERR(src_lock);
1120 src_exception.inode = file_inode(src_f);
1121 src_exception.state = src_lock->open_context->state;
1123 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f));
1124 if (IS_ERR(dst_lock)) {
1125 err = PTR_ERR(dst_lock);
1126 goto out_put_src_lock;
1129 dst_exception.inode = file_inode(dst_f);
1130 dst_exception.state = dst_lock->open_context->state;
1133 err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock,
1134 src_offset, dst_offset, count);
1135 if (err == -ENOTSUPP || err == -EOPNOTSUPP) {
1136 NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE;
1141 err2 = nfs4_handle_exception(server, err, &src_exception);
1142 err = nfs4_handle_exception(server, err, &dst_exception);
1145 } while (src_exception.retry || dst_exception.retry);
1147 nfs_put_lock_context(dst_lock);
1149 nfs_put_lock_context(src_lock);
1153 #define NFS4XATTR_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
1155 static int _nfs42_proc_removexattr(struct inode *inode, const char *name)
1157 struct nfs_server *server = NFS_SERVER(inode);
1158 struct nfs42_removexattrargs args = {
1159 .fh = NFS_FH(inode),
1162 struct nfs42_removexattrres res;
1163 struct rpc_message msg = {
1164 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVEXATTR],
1169 unsigned long timestamp = jiffies;
1171 ret = nfs4_call_sync(server->client, server, &msg, &args.seq_args,
1174 nfs4_update_changeattr(inode, &res.cinfo, timestamp, 0);
1179 static int _nfs42_proc_setxattr(struct inode *inode, const char *name,
1180 const void *buf, size_t buflen, int flags)
1182 struct nfs_server *server = NFS_SERVER(inode);
1183 struct page *pages[NFS4XATTR_MAXPAGES];
1184 struct nfs42_setxattrargs arg = {
1185 .fh = NFS_FH(inode),
1186 .xattr_pages = pages,
1187 .xattr_len = buflen,
1189 .xattr_flags = flags,
1191 struct nfs42_setxattrres res;
1192 struct rpc_message msg = {
1193 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETXATTR],
1198 unsigned long timestamp = jiffies;
1200 if (buflen > server->sxasize)
1204 np = nfs4_buf_to_pages_noslab(buf, buflen, arg.xattr_pages);
1210 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args,
1213 for (; np > 0; np--)
1214 put_page(pages[np - 1]);
1217 nfs4_update_changeattr(inode, &res.cinfo, timestamp, 0);
1222 static ssize_t _nfs42_proc_getxattr(struct inode *inode, const char *name,
1223 void *buf, size_t buflen, struct page **pages,
1226 struct nfs_server *server = NFS_SERVER(inode);
1227 struct nfs42_getxattrargs arg = {
1228 .fh = NFS_FH(inode),
1231 struct nfs42_getxattrres res;
1232 struct rpc_message msg = {
1233 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETXATTR],
1239 arg.xattr_len = plen;
1240 arg.xattr_pages = pages;
1242 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args,
1248 * Normally, the caching is done one layer up, but for successful
1249 * RPCS, always cache the result here, even if the caller was
1250 * just querying the length, or if the reply was too big for
1251 * the caller. This avoids a second RPC in the case of the
1252 * common query-alloc-retrieve cycle for xattrs.
1254 * Note that xattr_len is always capped to XATTR_SIZE_MAX.
1257 nfs4_xattr_cache_add(inode, name, NULL, pages, res.xattr_len);
1260 if (res.xattr_len > buflen)
1262 _copy_from_pages(buf, pages, 0, res.xattr_len);
1265 return res.xattr_len;
1268 static ssize_t _nfs42_proc_listxattrs(struct inode *inode, void *buf,
1269 size_t buflen, u64 *cookiep, bool *eofp)
1271 struct nfs_server *server = NFS_SERVER(inode);
1272 struct page **pages;
1273 struct nfs42_listxattrsargs arg = {
1274 .fh = NFS_FH(inode),
1277 struct nfs42_listxattrsres res = {
1280 .xattr_len = buflen,
1282 struct rpc_message msg = {
1283 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LISTXATTRS],
1292 res.scratch = alloc_page(GFP_KERNEL);
1296 xdrlen = nfs42_listxattr_xdrsize(buflen);
1297 if (xdrlen > server->lxasize)
1298 xdrlen = server->lxasize;
1299 np = xdrlen / PAGE_SIZE + 1;
1301 pages = kcalloc(np, sizeof(struct page *), GFP_KERNEL);
1303 goto out_free_scratch;
1304 for (i = 0; i < np; i++) {
1305 pages[i] = alloc_page(GFP_KERNEL);
1307 goto out_free_pages;
1310 arg.xattr_pages = pages;
1313 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args,
1318 *cookiep = res.cookie;
1325 __free_page(pages[np]);
1329 __free_page(res.scratch);
1335 ssize_t nfs42_proc_getxattr(struct inode *inode, const char *name,
1336 void *buf, size_t buflen)
1338 struct nfs4_exception exception = { };
1340 struct page **pages;
1342 np = nfs_page_array_len(0, buflen ?: XATTR_SIZE_MAX);
1343 pages = kmalloc_array(np, sizeof(*pages), GFP_KERNEL);
1347 for (i = 0; i < np; i++) {
1348 pages[i] = alloc_page(GFP_KERNEL);
1357 * The GETXATTR op has no length field in the call, and the
1358 * xattr data is at the end of the reply.
1360 * There is no downside in using the page-aligned length. It will
1361 * allow receiving and caching xattrs that are too large for the
1362 * caller but still fit in the page-rounded value.
1365 err = _nfs42_proc_getxattr(inode, name, buf, buflen,
1366 pages, np * PAGE_SIZE);
1369 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1371 } while (exception.retry);
1375 __free_page(pages[np]);
1381 int nfs42_proc_setxattr(struct inode *inode, const char *name,
1382 const void *buf, size_t buflen, int flags)
1384 struct nfs4_exception exception = { };
1388 err = _nfs42_proc_setxattr(inode, name, buf, buflen, flags);
1391 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1393 } while (exception.retry);
1398 ssize_t nfs42_proc_listxattrs(struct inode *inode, void *buf,
1399 size_t buflen, u64 *cookiep, bool *eofp)
1401 struct nfs4_exception exception = { };
1405 err = _nfs42_proc_listxattrs(inode, buf, buflen,
1409 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1411 } while (exception.retry);
1416 int nfs42_proc_removexattr(struct inode *inode, const char *name)
1418 struct nfs4_exception exception = { };
1422 err = _nfs42_proc_removexattr(inode, name);
1425 err = nfs4_handle_exception(NFS_SERVER(inode), err,
1427 } while (exception.retry);