2 * Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com>
5 #include <linux/sunrpc/sched.h>
7 #include <linux/nfs3.h>
8 #include <linux/nfs4.h>
9 #include <linux/nfs_xdr.h>
10 #include <linux/nfs_fs.h>
15 #include "nfs4session.h"
18 #define NFSDBG_FACILITY NFSDBG_PROC
20 static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
21 struct nfs_lock_context *lock, loff_t offset, loff_t len)
23 struct inode *inode = file_inode(filep);
24 struct nfs_server *server = NFS_SERVER(inode);
25 struct nfs42_falloc_args args = {
26 .falloc_fh = NFS_FH(inode),
27 .falloc_offset = offset,
29 .falloc_bitmask = server->cache_consistency_bitmask,
31 struct nfs42_falloc_res res = {
32 .falloc_server = server,
36 msg->rpc_argp = &args;
39 status = nfs4_set_rw_stateid(&args.falloc_stateid, lock->open_context,
44 res.falloc_fattr = nfs_alloc_fattr();
45 if (!res.falloc_fattr)
48 status = nfs4_call_sync(server->client, server, msg,
49 &args.seq_args, &res.seq_res, 0);
51 status = nfs_post_op_update_inode(inode, res.falloc_fattr);
53 kfree(res.falloc_fattr);
57 static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
58 loff_t offset, loff_t len)
60 struct nfs_server *server = NFS_SERVER(file_inode(filep));
61 struct nfs4_exception exception = { };
62 struct nfs_lock_context *lock;
65 lock = nfs_get_lock_context(nfs_file_open_context(filep));
69 exception.inode = file_inode(filep);
70 exception.state = lock->open_context->state;
73 err = _nfs42_proc_fallocate(msg, filep, lock, offset, len);
74 if (err == -ENOTSUPP) {
78 err = nfs4_handle_exception(server, err, &exception);
79 } while (exception.retry);
81 nfs_put_lock_context(lock);
85 int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len)
87 struct rpc_message msg = {
88 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE],
90 struct inode *inode = file_inode(filep);
93 if (!nfs_server_capable(inode, NFS_CAP_ALLOCATE))
98 err = nfs42_proc_fallocate(&msg, filep, offset, len);
99 if (err == -EOPNOTSUPP)
100 NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE;
106 int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len)
108 struct rpc_message msg = {
109 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DEALLOCATE],
111 struct inode *inode = file_inode(filep);
114 if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE))
118 err = nfs_sync_inode(inode);
122 err = nfs42_proc_fallocate(&msg, filep, offset, len);
124 truncate_pagecache_range(inode, offset, (offset + len) -1);
125 if (err == -EOPNOTSUPP)
126 NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE;
132 static ssize_t _nfs42_proc_copy(struct file *src, loff_t pos_src,
133 struct nfs_lock_context *src_lock,
134 struct file *dst, loff_t pos_dst,
135 struct nfs_lock_context *dst_lock,
138 struct nfs42_copy_args args = {
139 .src_fh = NFS_FH(file_inode(src)),
141 .dst_fh = NFS_FH(file_inode(dst)),
145 struct nfs42_copy_res res;
146 struct rpc_message msg = {
147 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY],
151 struct inode *dst_inode = file_inode(dst);
152 struct nfs_server *server = NFS_SERVER(dst_inode);
155 status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context,
156 src_lock, FMODE_READ);
160 status = nfs_filemap_write_and_wait_range(file_inode(src)->i_mapping,
161 pos_src, pos_src + (loff_t)count - 1);
165 status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
166 dst_lock, FMODE_WRITE);
170 status = nfs_sync_inode(dst_inode);
174 status = nfs4_call_sync(server->client, server, &msg,
175 &args.seq_args, &res.seq_res, 0);
176 if (status == -ENOTSUPP)
177 server->caps &= ~NFS_CAP_COPY;
181 if (res.write_res.verifier.committed != NFS_FILE_SYNC) {
182 status = nfs_commit_file(dst, &res.write_res.verifier.verifier);
187 truncate_pagecache_range(dst_inode, pos_dst,
188 pos_dst + res.write_res.count);
190 return res.write_res.count;
193 ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
194 struct file *dst, loff_t pos_dst,
197 struct nfs_server *server = NFS_SERVER(file_inode(dst));
198 struct nfs_lock_context *src_lock;
199 struct nfs_lock_context *dst_lock;
200 struct nfs4_exception src_exception = { };
201 struct nfs4_exception dst_exception = { };
204 if (!nfs_server_capable(file_inode(dst), NFS_CAP_COPY))
207 src_lock = nfs_get_lock_context(nfs_file_open_context(src));
208 if (IS_ERR(src_lock))
209 return PTR_ERR(src_lock);
211 src_exception.inode = file_inode(src);
212 src_exception.state = src_lock->open_context->state;
214 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst));
215 if (IS_ERR(dst_lock)) {
216 err = PTR_ERR(dst_lock);
217 goto out_put_src_lock;
220 dst_exception.inode = file_inode(dst);
221 dst_exception.state = dst_lock->open_context->state;
224 inode_lock(file_inode(dst));
225 err = _nfs42_proc_copy(src, pos_src, src_lock,
226 dst, pos_dst, dst_lock, count);
227 inode_unlock(file_inode(dst));
229 if (err == -ENOTSUPP) {
234 err2 = nfs4_handle_exception(server, err, &src_exception);
235 err = nfs4_handle_exception(server, err, &dst_exception);
238 } while (src_exception.retry || dst_exception.retry);
240 nfs_put_lock_context(dst_lock);
242 nfs_put_lock_context(src_lock);
246 static loff_t _nfs42_proc_llseek(struct file *filep,
247 struct nfs_lock_context *lock, loff_t offset, int whence)
249 struct inode *inode = file_inode(filep);
250 struct nfs42_seek_args args = {
251 .sa_fh = NFS_FH(inode),
253 .sa_what = (whence == SEEK_HOLE) ?
254 NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA,
256 struct nfs42_seek_res res;
257 struct rpc_message msg = {
258 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK],
262 struct nfs_server *server = NFS_SERVER(inode);
265 if (!nfs_server_capable(inode, NFS_CAP_SEEK))
268 status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context,
273 status = nfs_filemap_write_and_wait_range(inode->i_mapping,
278 status = nfs4_call_sync(server->client, server, &msg,
279 &args.seq_args, &res.seq_res, 0);
280 if (status == -ENOTSUPP)
281 server->caps &= ~NFS_CAP_SEEK;
285 return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
288 loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
290 struct nfs_server *server = NFS_SERVER(file_inode(filep));
291 struct nfs4_exception exception = { };
292 struct nfs_lock_context *lock;
295 lock = nfs_get_lock_context(nfs_file_open_context(filep));
297 return PTR_ERR(lock);
299 exception.inode = file_inode(filep);
300 exception.state = lock->open_context->state;
303 err = _nfs42_proc_llseek(filep, lock, offset, whence);
306 if (err == -ENOTSUPP) {
310 err = nfs4_handle_exception(server, err, &exception);
311 } while (exception.retry);
313 nfs_put_lock_context(lock);
319 nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata)
321 struct nfs42_layoutstat_data *data = calldata;
322 struct inode *inode = data->inode;
323 struct nfs_server *server = NFS_SERVER(inode);
324 struct pnfs_layout_hdr *lo;
326 spin_lock(&inode->i_lock);
327 lo = NFS_I(inode)->layout;
328 if (!pnfs_layout_is_valid(lo)) {
329 spin_unlock(&inode->i_lock);
333 nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid);
334 spin_unlock(&inode->i_lock);
335 nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
336 &data->res.seq_res, task);
340 nfs42_layoutstat_done(struct rpc_task *task, void *calldata)
342 struct nfs42_layoutstat_data *data = calldata;
343 struct inode *inode = data->inode;
344 struct pnfs_layout_hdr *lo;
346 if (!nfs4_sequence_done(task, &data->res.seq_res))
349 switch (task->tk_status) {
352 case -NFS4ERR_EXPIRED:
353 case -NFS4ERR_ADMIN_REVOKED:
354 case -NFS4ERR_DELEG_REVOKED:
355 case -NFS4ERR_STALE_STATEID:
356 case -NFS4ERR_BAD_STATEID:
357 spin_lock(&inode->i_lock);
358 lo = NFS_I(inode)->layout;
359 if (pnfs_layout_is_valid(lo) &&
360 nfs4_stateid_match(&data->args.stateid,
365 * Mark the bad layout state as invalid, then retry
366 * with the current stateid.
368 pnfs_mark_layout_stateid_invalid(lo, &head);
369 spin_unlock(&inode->i_lock);
370 pnfs_free_lseg_list(&head);
372 spin_unlock(&inode->i_lock);
374 case -NFS4ERR_OLD_STATEID:
375 spin_lock(&inode->i_lock);
376 lo = NFS_I(inode)->layout;
377 if (pnfs_layout_is_valid(lo) &&
378 nfs4_stateid_match_other(&data->args.stateid,
380 /* Do we need to delay before resending? */
381 if (!nfs4_stateid_is_newer(&lo->plh_stateid,
382 &data->args.stateid))
384 rpc_restart_call_prepare(task);
386 spin_unlock(&inode->i_lock);
390 NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS;
393 dprintk("%s server returns %d\n", __func__, task->tk_status);
397 nfs42_layoutstat_release(void *calldata)
399 struct nfs42_layoutstat_data *data = calldata;
400 struct nfs42_layoutstat_devinfo *devinfo = data->args.devinfo;
403 for (i = 0; i < data->args.num_dev; i++) {
404 if (devinfo[i].ld_private.ops && devinfo[i].ld_private.ops->free)
405 devinfo[i].ld_private.ops->free(&devinfo[i].ld_private);
408 pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout);
409 smp_mb__before_atomic();
410 clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags);
411 smp_mb__after_atomic();
412 nfs_iput_and_deactive(data->inode);
413 kfree(data->args.devinfo);
417 static const struct rpc_call_ops nfs42_layoutstat_ops = {
418 .rpc_call_prepare = nfs42_layoutstat_prepare,
419 .rpc_call_done = nfs42_layoutstat_done,
420 .rpc_release = nfs42_layoutstat_release,
423 int nfs42_proc_layoutstats_generic(struct nfs_server *server,
424 struct nfs42_layoutstat_data *data)
426 struct rpc_message msg = {
427 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS],
428 .rpc_argp = &data->args,
429 .rpc_resp = &data->res,
431 struct rpc_task_setup task_setup = {
432 .rpc_client = server->client,
434 .callback_ops = &nfs42_layoutstat_ops,
435 .callback_data = data,
436 .flags = RPC_TASK_ASYNC,
438 struct rpc_task *task;
440 data->inode = nfs_igrab_and_active(data->args.inode);
442 nfs42_layoutstat_release(data);
445 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
446 task = rpc_run_task(&task_setup);
448 return PTR_ERR(task);
453 static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f,
454 struct file *dst_f, struct nfs_lock_context *src_lock,
455 struct nfs_lock_context *dst_lock, loff_t src_offset,
456 loff_t dst_offset, loff_t count)
458 struct inode *src_inode = file_inode(src_f);
459 struct inode *dst_inode = file_inode(dst_f);
460 struct nfs_server *server = NFS_SERVER(dst_inode);
461 struct nfs42_clone_args args = {
462 .src_fh = NFS_FH(src_inode),
463 .dst_fh = NFS_FH(dst_inode),
464 .src_offset = src_offset,
465 .dst_offset = dst_offset,
467 .dst_bitmask = server->cache_consistency_bitmask,
469 struct nfs42_clone_res res = {
474 msg->rpc_argp = &args;
475 msg->rpc_resp = &res;
477 status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context,
478 src_lock, FMODE_READ);
482 status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
483 dst_lock, FMODE_WRITE);
487 res.dst_fattr = nfs_alloc_fattr();
491 status = nfs4_call_sync(server->client, server, msg,
492 &args.seq_args, &res.seq_res, 0);
494 status = nfs_post_op_update_inode(dst_inode, res.dst_fattr);
496 kfree(res.dst_fattr);
500 int nfs42_proc_clone(struct file *src_f, struct file *dst_f,
501 loff_t src_offset, loff_t dst_offset, loff_t count)
503 struct rpc_message msg = {
504 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE],
506 struct inode *inode = file_inode(src_f);
507 struct nfs_server *server = NFS_SERVER(file_inode(src_f));
508 struct nfs_lock_context *src_lock;
509 struct nfs_lock_context *dst_lock;
510 struct nfs4_exception src_exception = { };
511 struct nfs4_exception dst_exception = { };
514 if (!nfs_server_capable(inode, NFS_CAP_CLONE))
517 src_lock = nfs_get_lock_context(nfs_file_open_context(src_f));
518 if (IS_ERR(src_lock))
519 return PTR_ERR(src_lock);
521 src_exception.inode = file_inode(src_f);
522 src_exception.state = src_lock->open_context->state;
524 dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f));
525 if (IS_ERR(dst_lock)) {
526 err = PTR_ERR(dst_lock);
527 goto out_put_src_lock;
530 dst_exception.inode = file_inode(dst_f);
531 dst_exception.state = dst_lock->open_context->state;
534 err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock,
535 src_offset, dst_offset, count);
536 if (err == -ENOTSUPP || err == -EOPNOTSUPP) {
537 NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE;
542 err2 = nfs4_handle_exception(server, err, &src_exception);
543 err = nfs4_handle_exception(server, err, &dst_exception);
546 } while (src_exception.retry || dst_exception.retry);
548 nfs_put_lock_context(dst_lock);
550 nfs_put_lock_context(src_lock);