1 // SPDX-License-Identifier: GPL-2.0
3 * linux/fs/nfs/nfs3proc.c
5 * Client-side NFSv3 procedures stubs.
7 * Copyright (C) 1997, Olaf Kirch
11 #include <linux/errno.h>
12 #include <linux/string.h>
13 #include <linux/sunrpc/clnt.h>
14 #include <linux/slab.h>
15 #include <linux/nfs.h>
16 #include <linux/nfs3.h>
17 #include <linux/nfs_fs.h>
18 #include <linux/nfs_page.h>
19 #include <linux/lockd/bind.h>
20 #include <linux/nfs_mount.h>
21 #include <linux/freezer.h>
22 #include <linux/xattr.h>
28 #define NFSDBG_FACILITY NFSDBG_PROC
30 /* A wrapper to handle the EJUKEBOX error messages */
32 nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
36 res = rpc_call_sync(clnt, msg, flags);
39 __set_current_state(TASK_KILLABLE|TASK_FREEZABLE_UNSAFE);
40 schedule_timeout(NFS_JUKEBOX_RETRY_TIME);
42 } while (!fatal_signal_pending(current));
46 #define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags)
49 nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode)
51 if (task->tk_status != -EJUKEBOX)
53 nfs_inc_stats(inode, NFSIOS_DELAY);
55 rpc_restart_call(task);
56 rpc_delay(task, NFS_JUKEBOX_RETRY_TIME);
61 do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle,
62 struct nfs_fsinfo *info)
64 struct rpc_message msg = {
65 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
71 dprintk("%s: call fsinfo\n", __func__);
72 nfs_fattr_init(info->fattr);
73 status = rpc_call_sync(client, &msg, 0);
74 dprintk("%s: reply fsinfo: %d\n", __func__, status);
75 if (status == 0 && !(info->fattr->valid & NFS_ATTR_FATTR)) {
76 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
77 msg.rpc_resp = info->fattr;
78 status = rpc_call_sync(client, &msg, 0);
79 dprintk("%s: reply getattr: %d\n", __func__, status);
85 * Bare-bones access to getattr: this is for nfs_get_root/nfs_get_sb
88 nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
89 struct nfs_fsinfo *info)
93 status = do_proc_get_root(server->client, fhandle, info);
94 if (status && server->nfs_client->cl_rpcclient != server->client)
95 status = do_proc_get_root(server->nfs_client->cl_rpcclient, fhandle, info);
100 * One function for each procedure in the NFS protocol.
103 nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
104 struct nfs_fattr *fattr, struct inode *inode)
106 struct rpc_message msg = {
107 .rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR],
112 unsigned short task_flags = 0;
114 /* Is this is an attribute revalidation, subject to softreval? */
115 if (inode && (server->flags & NFS_MOUNT_SOFTREVAL))
116 task_flags |= RPC_TASK_TIMEOUT;
118 dprintk("NFS call getattr\n");
119 nfs_fattr_init(fattr);
120 status = rpc_call_sync(server->client, &msg, task_flags);
121 dprintk("NFS reply getattr: %d\n", status);
126 nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
129 struct inode *inode = d_inode(dentry);
130 struct nfs3_sattrargs arg = {
134 struct rpc_message msg = {
135 .rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR],
141 dprintk("NFS call setattr\n");
142 if (sattr->ia_valid & ATTR_FILE)
143 msg.rpc_cred = nfs_file_cred(sattr->ia_file);
144 nfs_fattr_init(fattr);
145 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
147 nfs_setattr_update_inode(inode, sattr, fattr);
148 if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
149 nfs_zap_acl_cache(inode);
151 dprintk("NFS reply setattr: %d\n", status);
156 __nfs3_proc_lookup(struct inode *dir, const char *name, size_t len,
157 struct nfs_fh *fhandle, struct nfs_fattr *fattr,
158 unsigned short task_flags)
160 struct nfs3_diropargs arg = {
165 struct nfs3_diropres res = {
169 struct rpc_message msg = {
170 .rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP],
176 res.dir_attr = nfs_alloc_fattr();
177 if (res.dir_attr == NULL)
180 nfs_fattr_init(fattr);
181 status = rpc_call_sync(NFS_CLIENT(dir), &msg, task_flags);
182 nfs_refresh_inode(dir, res.dir_attr);
183 if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
184 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
185 msg.rpc_argp = fhandle;
186 msg.rpc_resp = fattr;
187 status = rpc_call_sync(NFS_CLIENT(dir), &msg, task_flags);
189 nfs_free_fattr(res.dir_attr);
190 dprintk("NFS reply lookup: %d\n", status);
195 nfs3_proc_lookup(struct inode *dir, struct dentry *dentry,
196 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
198 unsigned short task_flags = 0;
200 /* Is this is an attribute revalidation, subject to softreval? */
201 if (nfs_lookup_is_soft_revalidate(dentry))
202 task_flags |= RPC_TASK_TIMEOUT;
204 dprintk("NFS call lookup %pd2\n", dentry);
205 return __nfs3_proc_lookup(dir, dentry->d_name.name,
206 dentry->d_name.len, fhandle, fattr,
210 static int nfs3_proc_lookupp(struct inode *inode, struct nfs_fh *fhandle,
211 struct nfs_fattr *fattr)
213 const char dotdot[] = "..";
214 const size_t len = strlen(dotdot);
215 unsigned short task_flags = 0;
217 if (NFS_SERVER(inode)->flags & NFS_MOUNT_SOFTREVAL)
218 task_flags |= RPC_TASK_TIMEOUT;
220 return __nfs3_proc_lookup(inode, dotdot, len, fhandle, fattr,
224 static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry,
225 const struct cred *cred)
227 struct nfs3_accessargs arg = {
229 .access = entry->mask,
231 struct nfs3_accessres res;
232 struct rpc_message msg = {
233 .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS],
238 int status = -ENOMEM;
240 dprintk("NFS call access\n");
241 res.fattr = nfs_alloc_fattr();
242 if (res.fattr == NULL)
245 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
246 nfs_refresh_inode(inode, res.fattr);
248 nfs_access_set_mask(entry, res.access);
249 nfs_free_fattr(res.fattr);
251 dprintk("NFS reply access: %d\n", status);
255 static int nfs3_proc_readlink(struct inode *inode, struct page *page,
256 unsigned int pgbase, unsigned int pglen)
258 struct nfs_fattr *fattr;
259 struct nfs3_readlinkargs args = {
265 struct rpc_message msg = {
266 .rpc_proc = &nfs3_procedures[NFS3PROC_READLINK],
269 int status = -ENOMEM;
271 dprintk("NFS call readlink\n");
272 fattr = nfs_alloc_fattr();
275 msg.rpc_resp = fattr;
277 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
278 nfs_refresh_inode(inode, fattr);
279 nfs_free_fattr(fattr);
281 dprintk("NFS reply readlink: %d\n", status);
285 struct nfs3_createdata {
286 struct rpc_message msg;
288 struct nfs3_createargs create;
289 struct nfs3_mkdirargs mkdir;
290 struct nfs3_symlinkargs symlink;
291 struct nfs3_mknodargs mknod;
293 struct nfs3_diropres res;
295 struct nfs_fattr fattr;
296 struct nfs_fattr dir_attr;
299 static struct nfs3_createdata *nfs3_alloc_createdata(void)
301 struct nfs3_createdata *data;
303 data = kzalloc(sizeof(*data), GFP_KERNEL);
305 data->msg.rpc_argp = &data->arg;
306 data->msg.rpc_resp = &data->res;
307 data->res.fh = &data->fh;
308 data->res.fattr = &data->fattr;
309 data->res.dir_attr = &data->dir_attr;
310 nfs_fattr_init(data->res.fattr);
311 nfs_fattr_init(data->res.dir_attr);
316 static struct dentry *
317 nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data)
321 status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0);
322 nfs_post_op_update_inode(dir, data->res.dir_attr);
324 return ERR_PTR(status);
326 return nfs_add_or_obtain(dentry, data->res.fh, data->res.fattr);
329 static void nfs3_free_createdata(struct nfs3_createdata *data)
335 * Create a regular file.
338 nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
341 struct posix_acl *default_acl, *acl;
342 struct nfs3_createdata *data;
343 struct dentry *d_alias;
344 int status = -ENOMEM;
346 dprintk("NFS call create %pd\n", dentry);
348 data = nfs3_alloc_createdata();
352 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE];
353 data->arg.create.fh = NFS_FH(dir);
354 data->arg.create.name = dentry->d_name.name;
355 data->arg.create.len = dentry->d_name.len;
356 data->arg.create.sattr = sattr;
358 data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
359 if (flags & O_EXCL) {
360 data->arg.create.createmode = NFS3_CREATE_EXCLUSIVE;
361 data->arg.create.verifier[0] = cpu_to_be32(jiffies);
362 data->arg.create.verifier[1] = cpu_to_be32(current->pid);
365 status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
370 d_alias = nfs3_do_create(dir, dentry, data);
371 status = PTR_ERR_OR_ZERO(d_alias);
373 if (status != -ENOTSUPP)
375 /* If the server doesn't support the exclusive creation
376 * semantics, try again with simple 'guarded' mode. */
377 switch (data->arg.create.createmode) {
378 case NFS3_CREATE_EXCLUSIVE:
379 data->arg.create.createmode = NFS3_CREATE_GUARDED;
382 case NFS3_CREATE_GUARDED:
383 data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
386 case NFS3_CREATE_UNCHECKED:
387 goto out_release_acls;
389 nfs_fattr_init(data->res.dir_attr);
390 nfs_fattr_init(data->res.fattr);
394 goto out_release_acls;
399 /* When we created the file with exclusive semantics, make
400 * sure we set the attributes afterwards. */
401 if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) {
402 dprintk("NFS call setattr (post-create)\n");
404 if (!(sattr->ia_valid & ATTR_ATIME_SET))
405 sattr->ia_valid |= ATTR_ATIME;
406 if (!(sattr->ia_valid & ATTR_MTIME_SET))
407 sattr->ia_valid |= ATTR_MTIME;
409 /* Note: we could use a guarded setattr here, but I'm
410 * not sure this buys us anything (and I'd have
411 * to revamp the NFSv3 XDR code) */
412 status = nfs3_proc_setattr(dentry, data->res.fattr, sattr);
413 nfs_post_op_update_inode(d_inode(dentry), data->res.fattr);
414 dprintk("NFS reply setattr (post-create): %d\n", status);
419 status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
424 posix_acl_release(acl);
425 posix_acl_release(default_acl);
427 nfs3_free_createdata(data);
428 dprintk("NFS reply create: %d\n", status);
433 nfs3_proc_remove(struct inode *dir, struct dentry *dentry)
435 struct nfs_removeargs arg = {
437 .name = dentry->d_name,
439 struct nfs_removeres res;
440 struct rpc_message msg = {
441 .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
445 int status = -ENOMEM;
447 dprintk("NFS call remove %pd2\n", dentry);
448 res.dir_attr = nfs_alloc_fattr();
449 if (res.dir_attr == NULL)
452 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
453 nfs_post_op_update_inode(dir, res.dir_attr);
454 nfs_free_fattr(res.dir_attr);
456 dprintk("NFS reply remove: %d\n", status);
461 nfs3_proc_unlink_setup(struct rpc_message *msg,
462 struct dentry *dentry,
465 msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
468 static void nfs3_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
470 rpc_call_start(task);
474 nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir)
476 struct nfs_removeres *res;
477 if (nfs3_async_handle_jukebox(task, dir))
479 res = task->tk_msg.rpc_resp;
480 nfs_post_op_update_inode(dir, res->dir_attr);
485 nfs3_proc_rename_setup(struct rpc_message *msg,
486 struct dentry *old_dentry,
487 struct dentry *new_dentry)
489 msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME];
492 static void nfs3_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data)
494 rpc_call_start(task);
498 nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
499 struct inode *new_dir)
501 struct nfs_renameres *res;
503 if (nfs3_async_handle_jukebox(task, old_dir))
505 res = task->tk_msg.rpc_resp;
507 nfs_post_op_update_inode(old_dir, res->old_fattr);
508 nfs_post_op_update_inode(new_dir, res->new_fattr);
513 nfs3_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name)
515 struct nfs3_linkargs arg = {
516 .fromfh = NFS_FH(inode),
518 .toname = name->name,
521 struct nfs3_linkres res;
522 struct rpc_message msg = {
523 .rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
527 int status = -ENOMEM;
529 dprintk("NFS call link %s\n", name->name);
530 res.fattr = nfs_alloc_fattr();
531 res.dir_attr = nfs_alloc_fattr();
532 if (res.fattr == NULL || res.dir_attr == NULL)
535 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
536 nfs_post_op_update_inode(dir, res.dir_attr);
537 nfs_post_op_update_inode(inode, res.fattr);
539 nfs_free_fattr(res.dir_attr);
540 nfs_free_fattr(res.fattr);
541 dprintk("NFS reply link: %d\n", status);
546 nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
547 unsigned int len, struct iattr *sattr)
549 struct nfs3_createdata *data;
550 struct dentry *d_alias;
551 int status = -ENOMEM;
553 if (len > NFS3_MAXPATHLEN)
554 return -ENAMETOOLONG;
556 dprintk("NFS call symlink %pd\n", dentry);
558 data = nfs3_alloc_createdata();
561 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK];
562 data->arg.symlink.fromfh = NFS_FH(dir);
563 data->arg.symlink.fromname = dentry->d_name.name;
564 data->arg.symlink.fromlen = dentry->d_name.len;
565 data->arg.symlink.pages = &page;
566 data->arg.symlink.pathlen = len;
567 data->arg.symlink.sattr = sattr;
569 d_alias = nfs3_do_create(dir, dentry, data);
570 status = PTR_ERR_OR_ZERO(d_alias);
575 nfs3_free_createdata(data);
577 dprintk("NFS reply symlink: %d\n", status);
582 nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
584 struct posix_acl *default_acl, *acl;
585 struct nfs3_createdata *data;
586 struct dentry *d_alias;
587 int status = -ENOMEM;
589 dprintk("NFS call mkdir %pd\n", dentry);
591 data = nfs3_alloc_createdata();
595 status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
599 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR];
600 data->arg.mkdir.fh = NFS_FH(dir);
601 data->arg.mkdir.name = dentry->d_name.name;
602 data->arg.mkdir.len = dentry->d_name.len;
603 data->arg.mkdir.sattr = sattr;
605 d_alias = nfs3_do_create(dir, dentry, data);
606 status = PTR_ERR_OR_ZERO(d_alias);
609 goto out_release_acls;
614 status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
618 posix_acl_release(acl);
619 posix_acl_release(default_acl);
621 nfs3_free_createdata(data);
622 dprintk("NFS reply mkdir: %d\n", status);
627 nfs3_proc_rmdir(struct inode *dir, const struct qstr *name)
629 struct nfs_fattr *dir_attr;
630 struct nfs3_diropargs arg = {
635 struct rpc_message msg = {
636 .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
639 int status = -ENOMEM;
641 dprintk("NFS call rmdir %s\n", name->name);
642 dir_attr = nfs_alloc_fattr();
643 if (dir_attr == NULL)
646 msg.rpc_resp = dir_attr;
647 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
648 nfs_post_op_update_inode(dir, dir_attr);
649 nfs_free_fattr(dir_attr);
651 dprintk("NFS reply rmdir: %d\n", status);
656 * The READDIR implementation is somewhat hackish - we pass the user buffer
657 * to the encode function, which installs it in the receive iovec.
658 * The decode function itself doesn't perform any decoding, it just makes
659 * sure the reply is syntactically correct.
661 * Also note that this implementation handles both plain readdir and
664 static int nfs3_proc_readdir(struct nfs_readdir_arg *nr_arg,
665 struct nfs_readdir_res *nr_res)
667 struct inode *dir = d_inode(nr_arg->dentry);
668 struct nfs3_readdirargs arg = {
670 .cookie = nr_arg->cookie,
671 .plus = nr_arg->plus,
672 .count = nr_arg->page_len,
673 .pages = nr_arg->pages
675 struct nfs3_readdirres res = {
676 .verf = nr_res->verf,
677 .plus = nr_arg->plus,
679 struct rpc_message msg = {
680 .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
683 .rpc_cred = nr_arg->cred,
685 int status = -ENOMEM;
688 msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
690 memcpy(arg.verf, nr_arg->verf, sizeof(arg.verf));
692 dprintk("NFS call readdir%s %llu\n", nr_arg->plus ? "plus" : "",
693 (unsigned long long)nr_arg->cookie);
695 res.dir_attr = nfs_alloc_fattr();
696 if (res.dir_attr == NULL)
699 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
701 nfs_invalidate_atime(dir);
702 nfs_refresh_inode(dir, res.dir_attr);
704 nfs_free_fattr(res.dir_attr);
706 dprintk("NFS reply readdir%s: %d\n", nr_arg->plus ? "plus" : "",
712 nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
715 struct posix_acl *default_acl, *acl;
716 struct nfs3_createdata *data;
717 struct dentry *d_alias;
718 int status = -ENOMEM;
720 dprintk("NFS call mknod %pd %u:%u\n", dentry,
721 MAJOR(rdev), MINOR(rdev));
723 data = nfs3_alloc_createdata();
727 status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
731 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD];
732 data->arg.mknod.fh = NFS_FH(dir);
733 data->arg.mknod.name = dentry->d_name.name;
734 data->arg.mknod.len = dentry->d_name.len;
735 data->arg.mknod.sattr = sattr;
736 data->arg.mknod.rdev = rdev;
738 switch (sattr->ia_mode & S_IFMT) {
740 data->arg.mknod.type = NF3BLK;
743 data->arg.mknod.type = NF3CHR;
746 data->arg.mknod.type = NF3FIFO;
749 data->arg.mknod.type = NF3SOCK;
753 goto out_release_acls;
756 d_alias = nfs3_do_create(dir, dentry, data);
757 status = PTR_ERR_OR_ZERO(d_alias);
759 goto out_release_acls;
764 status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
768 posix_acl_release(acl);
769 posix_acl_release(default_acl);
771 nfs3_free_createdata(data);
772 dprintk("NFS reply mknod: %d\n", status);
777 nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
778 struct nfs_fsstat *stat)
780 struct rpc_message msg = {
781 .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT],
787 dprintk("NFS call fsstat\n");
788 nfs_fattr_init(stat->fattr);
789 status = rpc_call_sync(server->client, &msg, 0);
790 dprintk("NFS reply fsstat: %d\n", status);
795 do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle,
796 struct nfs_fsinfo *info)
798 struct rpc_message msg = {
799 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
805 dprintk("NFS call fsinfo\n");
806 nfs_fattr_init(info->fattr);
807 status = rpc_call_sync(client, &msg, 0);
808 dprintk("NFS reply fsinfo: %d\n", status);
813 * Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via
817 nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
818 struct nfs_fsinfo *info)
822 status = do_proc_fsinfo(server->client, fhandle, info);
823 if (status && server->nfs_client->cl_rpcclient != server->client)
824 status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info);
829 nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
830 struct nfs_pathconf *info)
832 struct rpc_message msg = {
833 .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF],
839 dprintk("NFS call pathconf\n");
840 nfs_fattr_init(info->fattr);
841 status = rpc_call_sync(server->client, &msg, 0);
842 dprintk("NFS reply pathconf: %d\n", status);
846 static int nfs3_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
848 struct inode *inode = hdr->inode;
849 struct nfs_server *server = NFS_SERVER(inode);
851 if (hdr->pgio_done_cb != NULL)
852 return hdr->pgio_done_cb(task, hdr);
854 if (nfs3_async_handle_jukebox(task, inode))
857 if (task->tk_status >= 0 && !server->read_hdrsize)
858 cmpxchg(&server->read_hdrsize, 0, hdr->res.replen);
860 nfs_invalidate_atime(inode);
861 nfs_refresh_inode(inode, &hdr->fattr);
865 static void nfs3_proc_read_setup(struct nfs_pgio_header *hdr,
866 struct rpc_message *msg)
868 msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
869 hdr->args.replen = NFS_SERVER(hdr->inode)->read_hdrsize;
872 static int nfs3_proc_pgio_rpc_prepare(struct rpc_task *task,
873 struct nfs_pgio_header *hdr)
875 rpc_call_start(task);
879 static int nfs3_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
881 struct inode *inode = hdr->inode;
883 if (hdr->pgio_done_cb != NULL)
884 return hdr->pgio_done_cb(task, hdr);
886 if (nfs3_async_handle_jukebox(task, inode))
888 if (task->tk_status >= 0)
889 nfs_writeback_update_inode(hdr);
893 static void nfs3_proc_write_setup(struct nfs_pgio_header *hdr,
894 struct rpc_message *msg,
895 struct rpc_clnt **clnt)
897 msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
900 static void nfs3_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data)
902 rpc_call_start(task);
905 static int nfs3_commit_done(struct rpc_task *task, struct nfs_commit_data *data)
907 if (data->commit_done_cb != NULL)
908 return data->commit_done_cb(task, data);
910 if (nfs3_async_handle_jukebox(task, data->inode))
912 nfs_refresh_inode(data->inode, data->res.fattr);
916 static void nfs3_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg,
917 struct rpc_clnt **clnt)
919 msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
922 static void nfs3_nlm_alloc_call(void *data)
924 struct nfs_lock_context *l_ctx = data;
925 if (l_ctx && test_bit(NFS_CONTEXT_UNLOCK, &l_ctx->open_context->flags)) {
926 get_nfs_open_context(l_ctx->open_context);
927 nfs_get_lock_context(l_ctx->open_context);
931 static bool nfs3_nlm_unlock_prepare(struct rpc_task *task, void *data)
933 struct nfs_lock_context *l_ctx = data;
934 if (l_ctx && test_bit(NFS_CONTEXT_UNLOCK, &l_ctx->open_context->flags))
935 return nfs_async_iocounter_wait(task, l_ctx);
940 static void nfs3_nlm_release_call(void *data)
942 struct nfs_lock_context *l_ctx = data;
943 struct nfs_open_context *ctx;
944 if (l_ctx && test_bit(NFS_CONTEXT_UNLOCK, &l_ctx->open_context->flags)) {
945 ctx = l_ctx->open_context;
946 nfs_put_lock_context(l_ctx);
947 put_nfs_open_context(ctx);
951 static const struct nlmclnt_operations nlmclnt_fl_close_lock_ops = {
952 .nlmclnt_alloc_call = nfs3_nlm_alloc_call,
953 .nlmclnt_unlock_prepare = nfs3_nlm_unlock_prepare,
954 .nlmclnt_release_call = nfs3_nlm_release_call,
958 nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
960 struct inode *inode = file_inode(filp);
961 struct nfs_lock_context *l_ctx = NULL;
962 struct nfs_open_context *ctx = nfs_file_open_context(filp);
965 if (fl->fl_flags & FL_CLOSE) {
966 l_ctx = nfs_get_lock_context(ctx);
970 set_bit(NFS_CONTEXT_UNLOCK, &ctx->flags);
973 status = nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl, l_ctx);
976 nfs_put_lock_context(l_ctx);
981 static int nfs3_have_delegation(struct inode *inode, fmode_t flags)
986 static const struct inode_operations nfs3_dir_inode_operations = {
987 .create = nfs_create,
988 .lookup = nfs_lookup,
990 .unlink = nfs_unlink,
991 .symlink = nfs_symlink,
995 .rename = nfs_rename,
996 .permission = nfs_permission,
997 .getattr = nfs_getattr,
998 .setattr = nfs_setattr,
999 #ifdef CONFIG_NFS_V3_ACL
1000 .listxattr = nfs3_listxattr,
1001 .get_acl = nfs3_get_acl,
1002 .set_acl = nfs3_set_acl,
1006 static const struct inode_operations nfs3_file_inode_operations = {
1007 .permission = nfs_permission,
1008 .getattr = nfs_getattr,
1009 .setattr = nfs_setattr,
1010 #ifdef CONFIG_NFS_V3_ACL
1011 .listxattr = nfs3_listxattr,
1012 .get_acl = nfs3_get_acl,
1013 .set_acl = nfs3_set_acl,
1017 const struct nfs_rpc_ops nfs_v3_clientops = {
1018 .version = 3, /* protocol version */
1019 .dentry_ops = &nfs_dentry_operations,
1020 .dir_inode_ops = &nfs3_dir_inode_operations,
1021 .file_inode_ops = &nfs3_file_inode_operations,
1022 .file_ops = &nfs_file_operations,
1023 .nlmclnt_ops = &nlmclnt_fl_close_lock_ops,
1024 .getroot = nfs3_proc_get_root,
1025 .submount = nfs_submount,
1026 .try_get_tree = nfs_try_get_tree,
1027 .getattr = nfs3_proc_getattr,
1028 .setattr = nfs3_proc_setattr,
1029 .lookup = nfs3_proc_lookup,
1030 .lookupp = nfs3_proc_lookupp,
1031 .access = nfs3_proc_access,
1032 .readlink = nfs3_proc_readlink,
1033 .create = nfs3_proc_create,
1034 .remove = nfs3_proc_remove,
1035 .unlink_setup = nfs3_proc_unlink_setup,
1036 .unlink_rpc_prepare = nfs3_proc_unlink_rpc_prepare,
1037 .unlink_done = nfs3_proc_unlink_done,
1038 .rename_setup = nfs3_proc_rename_setup,
1039 .rename_rpc_prepare = nfs3_proc_rename_rpc_prepare,
1040 .rename_done = nfs3_proc_rename_done,
1041 .link = nfs3_proc_link,
1042 .symlink = nfs3_proc_symlink,
1043 .mkdir = nfs3_proc_mkdir,
1044 .rmdir = nfs3_proc_rmdir,
1045 .readdir = nfs3_proc_readdir,
1046 .mknod = nfs3_proc_mknod,
1047 .statfs = nfs3_proc_statfs,
1048 .fsinfo = nfs3_proc_fsinfo,
1049 .pathconf = nfs3_proc_pathconf,
1050 .decode_dirent = nfs3_decode_dirent,
1051 .pgio_rpc_prepare = nfs3_proc_pgio_rpc_prepare,
1052 .read_setup = nfs3_proc_read_setup,
1053 .read_done = nfs3_read_done,
1054 .write_setup = nfs3_proc_write_setup,
1055 .write_done = nfs3_write_done,
1056 .commit_setup = nfs3_proc_commit_setup,
1057 .commit_rpc_prepare = nfs3_proc_commit_rpc_prepare,
1058 .commit_done = nfs3_commit_done,
1059 .lock = nfs3_proc_lock,
1060 .clear_acl_cache = forget_all_cached_acls,
1061 .close_context = nfs_close_context,
1062 .have_delegation = nfs3_have_delegation,
1063 .alloc_client = nfs_alloc_client,
1064 .init_client = nfs_init_client,
1065 .free_client = nfs_free_client,
1066 .create_server = nfs3_create_server,
1067 .clone_server = nfs3_clone_server,