1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 1992, 1993, 1994 Rick Sladkey
7 * OS-independent nfs remote procedure call functions
9 * Tuned by Alan Cox <A.Cox@swansea.ac.uk> for >3K buffers
10 * so at last we can have decent(ish) throughput off a
13 * Coding optimized and cleaned up by Florian La Roche.
14 * Note: Error returns are optimized for NFS_OK, which isn't translated via
15 * nfs_stat_to_errno(), but happens to be already the right return code.
17 * Also, the code currently doesn't check the size of the packet, when
18 * it decodes the packet.
20 * Feel free to fix it and mail me the diffs if it worries you.
22 * Completely rewritten to support the new RPC call interface;
23 * rewrote and moved the entire XDR stuff to xdr.c
24 * --Olaf Kirch June 1996
26 * The code below initializes all auto variables explicitly, otherwise
27 * it will fail to work as a module (gcc generates a memset call for an
31 #include <linux/types.h>
32 #include <linux/param.h>
33 #include <linux/time.h>
35 #include <linux/errno.h>
36 #include <linux/string.h>
38 #include <linux/pagemap.h>
39 #include <linux/sunrpc/clnt.h>
40 #include <linux/nfs.h>
41 #include <linux/nfs2.h>
42 #include <linux/nfs_fs.h>
43 #include <linux/nfs_page.h>
44 #include <linux/lockd/bind.h>
45 #include <linux/freezer.h>
48 #define NFSDBG_FACILITY NFSDBG_PROC
51 * Bare-bones access to getattr: this is for nfs_read_super.
54 nfs_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
55 struct nfs_fsinfo
*info
)
57 struct nfs_fattr
*fattr
= info
->fattr
;
58 struct nfs2_fsstat fsinfo
;
59 struct rpc_message msg
= {
60 .rpc_proc
= &nfs_procedures
[NFSPROC_GETATTR
],
66 dprintk("%s: call getattr\n", __func__
);
67 nfs_fattr_init(fattr
);
68 status
= rpc_call_sync(server
->client
, &msg
, 0);
69 /* Retry with default authentication if different */
70 if (status
&& server
->nfs_client
->cl_rpcclient
!= server
->client
)
71 status
= rpc_call_sync(server
->nfs_client
->cl_rpcclient
, &msg
, 0);
72 dprintk("%s: reply getattr: %d\n", __func__
, status
);
75 dprintk("%s: call statfs\n", __func__
);
76 msg
.rpc_proc
= &nfs_procedures
[NFSPROC_STATFS
];
77 msg
.rpc_resp
= &fsinfo
;
78 status
= rpc_call_sync(server
->client
, &msg
, 0);
79 /* Retry with default authentication if different */
80 if (status
&& server
->nfs_client
->cl_rpcclient
!= server
->client
)
81 status
= rpc_call_sync(server
->nfs_client
->cl_rpcclient
, &msg
, 0);
82 dprintk("%s: reply statfs: %d\n", __func__
, status
);
85 info
->rtmax
= NFS_MAXDATA
;
86 info
->rtpref
= fsinfo
.tsize
;
87 info
->rtmult
= fsinfo
.bsize
;
88 info
->wtmax
= NFS_MAXDATA
;
89 info
->wtpref
= fsinfo
.tsize
;
90 info
->wtmult
= fsinfo
.bsize
;
91 info
->dtpref
= fsinfo
.tsize
;
92 info
->maxfilesize
= 0x7FFFFFFF;
98 * One function for each procedure in the NFS protocol.
101 nfs_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
102 struct nfs_fattr
*fattr
, struct nfs4_label
*label
,
105 struct rpc_message msg
= {
106 .rpc_proc
= &nfs_procedures
[NFSPROC_GETATTR
],
111 unsigned short task_flags
= 0;
113 /* Is this is an attribute revalidation, subject to softreval? */
114 if (inode
&& (server
->flags
& NFS_MOUNT_SOFTREVAL
))
115 task_flags
|= RPC_TASK_TIMEOUT
;
117 dprintk("NFS call getattr\n");
118 nfs_fattr_init(fattr
);
119 status
= rpc_call_sync(server
->client
, &msg
, task_flags
);
120 dprintk("NFS reply getattr: %d\n", status
);
125 nfs_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
128 struct inode
*inode
= d_inode(dentry
);
129 struct nfs_sattrargs arg
= {
133 struct rpc_message msg
= {
134 .rpc_proc
= &nfs_procedures
[NFSPROC_SETATTR
],
140 /* Mask out the non-modebit related stuff from attr->ia_mode */
141 sattr
->ia_mode
&= S_IALLUGO
;
143 dprintk("NFS call setattr\n");
144 if (sattr
->ia_valid
& ATTR_FILE
)
145 msg
.rpc_cred
= nfs_file_cred(sattr
->ia_file
);
146 nfs_fattr_init(fattr
);
147 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
149 nfs_setattr_update_inode(inode
, sattr
, fattr
);
150 dprintk("NFS reply setattr: %d\n", status
);
155 nfs_proc_lookup(struct inode
*dir
, struct dentry
*dentry
,
156 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
157 struct nfs4_label
*label
)
159 struct nfs_diropargs arg
= {
161 .name
= dentry
->d_name
.name
,
162 .len
= dentry
->d_name
.len
164 struct nfs_diropok res
= {
168 struct rpc_message msg
= {
169 .rpc_proc
= &nfs_procedures
[NFSPROC_LOOKUP
],
174 unsigned short task_flags
= 0;
176 /* Is this is an attribute revalidation, subject to softreval? */
177 if (nfs_lookup_is_soft_revalidate(dentry
))
178 task_flags
|= RPC_TASK_TIMEOUT
;
180 dprintk("NFS call lookup %pd2\n", dentry
);
181 nfs_fattr_init(fattr
);
182 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, task_flags
);
183 dprintk("NFS reply lookup: %d\n", status
);
187 static int nfs_proc_readlink(struct inode
*inode
, struct page
*page
,
188 unsigned int pgbase
, unsigned int pglen
)
190 struct nfs_readlinkargs args
= {
196 struct rpc_message msg
= {
197 .rpc_proc
= &nfs_procedures
[NFSPROC_READLINK
],
202 dprintk("NFS call readlink\n");
203 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
204 dprintk("NFS reply readlink: %d\n", status
);
208 struct nfs_createdata
{
209 struct nfs_createargs arg
;
210 struct nfs_diropok res
;
211 struct nfs_fh fhandle
;
212 struct nfs_fattr fattr
;
215 static struct nfs_createdata
*nfs_alloc_createdata(struct inode
*dir
,
216 struct dentry
*dentry
, struct iattr
*sattr
)
218 struct nfs_createdata
*data
;
220 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
223 data
->arg
.fh
= NFS_FH(dir
);
224 data
->arg
.name
= dentry
->d_name
.name
;
225 data
->arg
.len
= dentry
->d_name
.len
;
226 data
->arg
.sattr
= sattr
;
227 nfs_fattr_init(&data
->fattr
);
228 data
->fhandle
.size
= 0;
229 data
->res
.fh
= &data
->fhandle
;
230 data
->res
.fattr
= &data
->fattr
;
235 static void nfs_free_createdata(const struct nfs_createdata
*data
)
241 nfs_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
244 struct nfs_createdata
*data
;
245 struct rpc_message msg
= {
246 .rpc_proc
= &nfs_procedures
[NFSPROC_CREATE
],
248 int status
= -ENOMEM
;
250 dprintk("NFS call create %pd\n", dentry
);
251 data
= nfs_alloc_createdata(dir
, dentry
, sattr
);
254 msg
.rpc_argp
= &data
->arg
;
255 msg
.rpc_resp
= &data
->res
;
256 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
257 nfs_mark_for_revalidate(dir
);
259 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, NULL
);
260 nfs_free_createdata(data
);
262 dprintk("NFS reply create: %d\n", status
);
267 * In NFSv2, mknod is grafted onto the create call.
270 nfs_proc_mknod(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
273 struct nfs_createdata
*data
;
274 struct rpc_message msg
= {
275 .rpc_proc
= &nfs_procedures
[NFSPROC_CREATE
],
278 int status
= -ENOMEM
;
280 dprintk("NFS call mknod %pd\n", dentry
);
282 mode
= sattr
->ia_mode
;
283 if (S_ISFIFO(mode
)) {
284 sattr
->ia_mode
= (mode
& ~S_IFMT
) | S_IFCHR
;
285 sattr
->ia_valid
&= ~ATTR_SIZE
;
286 } else if (S_ISCHR(mode
) || S_ISBLK(mode
)) {
287 sattr
->ia_valid
|= ATTR_SIZE
;
288 sattr
->ia_size
= new_encode_dev(rdev
);/* get out your barf bag */
291 data
= nfs_alloc_createdata(dir
, dentry
, sattr
);
294 msg
.rpc_argp
= &data
->arg
;
295 msg
.rpc_resp
= &data
->res
;
297 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
298 nfs_mark_for_revalidate(dir
);
300 if (status
== -EINVAL
&& S_ISFIFO(mode
)) {
301 sattr
->ia_mode
= mode
;
302 nfs_fattr_init(data
->res
.fattr
);
303 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
306 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, NULL
);
307 nfs_free_createdata(data
);
309 dprintk("NFS reply mknod: %d\n", status
);
314 nfs_proc_remove(struct inode
*dir
, struct dentry
*dentry
)
316 struct nfs_removeargs arg
= {
318 .name
= dentry
->d_name
,
320 struct rpc_message msg
= {
321 .rpc_proc
= &nfs_procedures
[NFSPROC_REMOVE
],
326 dprintk("NFS call remove %pd2\n",dentry
);
327 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
328 nfs_mark_for_revalidate(dir
);
330 dprintk("NFS reply remove: %d\n", status
);
335 nfs_proc_unlink_setup(struct rpc_message
*msg
,
336 struct dentry
*dentry
,
339 msg
->rpc_proc
= &nfs_procedures
[NFSPROC_REMOVE
];
342 static void nfs_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
344 rpc_call_start(task
);
347 static int nfs_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
349 nfs_mark_for_revalidate(dir
);
354 nfs_proc_rename_setup(struct rpc_message
*msg
,
355 struct dentry
*old_dentry
,
356 struct dentry
*new_dentry
)
358 msg
->rpc_proc
= &nfs_procedures
[NFSPROC_RENAME
];
361 static void nfs_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
363 rpc_call_start(task
);
367 nfs_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
368 struct inode
*new_dir
)
370 nfs_mark_for_revalidate(old_dir
);
371 nfs_mark_for_revalidate(new_dir
);
376 nfs_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
378 struct nfs_linkargs arg
= {
379 .fromfh
= NFS_FH(inode
),
381 .toname
= name
->name
,
384 struct rpc_message msg
= {
385 .rpc_proc
= &nfs_procedures
[NFSPROC_LINK
],
390 dprintk("NFS call link %s\n", name
->name
);
391 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
392 nfs_mark_for_revalidate(inode
);
393 nfs_mark_for_revalidate(dir
);
394 dprintk("NFS reply link: %d\n", status
);
399 nfs_proc_symlink(struct inode
*dir
, struct dentry
*dentry
, struct page
*page
,
400 unsigned int len
, struct iattr
*sattr
)
403 struct nfs_fattr
*fattr
;
404 struct nfs_symlinkargs arg
= {
405 .fromfh
= NFS_FH(dir
),
406 .fromname
= dentry
->d_name
.name
,
407 .fromlen
= dentry
->d_name
.len
,
412 struct rpc_message msg
= {
413 .rpc_proc
= &nfs_procedures
[NFSPROC_SYMLINK
],
416 int status
= -ENAMETOOLONG
;
418 dprintk("NFS call symlink %pd\n", dentry
);
420 if (len
> NFS2_MAXPATHLEN
)
423 fh
= nfs_alloc_fhandle();
424 fattr
= nfs_alloc_fattr();
426 if (fh
== NULL
|| fattr
== NULL
)
429 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
430 nfs_mark_for_revalidate(dir
);
433 * V2 SYMLINK requests don't return any attributes. Setting the
434 * filehandle size to zero indicates to nfs_instantiate that it
435 * should fill in the data with a LOOKUP call on the wire.
438 status
= nfs_instantiate(dentry
, fh
, fattr
, NULL
);
441 nfs_free_fattr(fattr
);
442 nfs_free_fhandle(fh
);
444 dprintk("NFS reply symlink: %d\n", status
);
449 nfs_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
)
451 struct nfs_createdata
*data
;
452 struct rpc_message msg
= {
453 .rpc_proc
= &nfs_procedures
[NFSPROC_MKDIR
],
455 int status
= -ENOMEM
;
457 dprintk("NFS call mkdir %pd\n", dentry
);
458 data
= nfs_alloc_createdata(dir
, dentry
, sattr
);
461 msg
.rpc_argp
= &data
->arg
;
462 msg
.rpc_resp
= &data
->res
;
464 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
465 nfs_mark_for_revalidate(dir
);
467 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, NULL
);
468 nfs_free_createdata(data
);
470 dprintk("NFS reply mkdir: %d\n", status
);
475 nfs_proc_rmdir(struct inode
*dir
, const struct qstr
*name
)
477 struct nfs_diropargs arg
= {
482 struct rpc_message msg
= {
483 .rpc_proc
= &nfs_procedures
[NFSPROC_RMDIR
],
488 dprintk("NFS call rmdir %s\n", name
->name
);
489 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
490 nfs_mark_for_revalidate(dir
);
491 dprintk("NFS reply rmdir: %d\n", status
);
496 * The READDIR implementation is somewhat hackish - we pass a temporary
497 * buffer to the encode function, which installs it in the receive
498 * the receive iovec. The decode function just parses the reply to make
499 * sure it is syntactically correct; the entries itself are decoded
500 * from nfs_readdir by calling the decode_entry function directly.
502 static int nfs_proc_readdir(struct nfs_readdir_arg
*nr_arg
,
503 struct nfs_readdir_res
*nr_res
)
505 struct inode
*dir
= d_inode(nr_arg
->dentry
);
506 struct nfs_readdirargs arg
= {
508 .cookie
= nr_arg
->cookie
,
509 .count
= nr_arg
->page_len
,
510 .pages
= nr_arg
->pages
,
512 struct rpc_message msg
= {
513 .rpc_proc
= &nfs_procedures
[NFSPROC_READDIR
],
515 .rpc_cred
= nr_arg
->cred
,
519 dprintk("NFS call readdir %llu\n", (unsigned long long)nr_arg
->cookie
);
520 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
521 nr_res
->verf
[0] = nr_res
->verf
[1] = 0;
523 nfs_invalidate_atime(dir
);
525 dprintk("NFS reply readdir: %d\n", status
);
530 nfs_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
531 struct nfs_fsstat
*stat
)
533 struct nfs2_fsstat fsinfo
;
534 struct rpc_message msg
= {
535 .rpc_proc
= &nfs_procedures
[NFSPROC_STATFS
],
541 dprintk("NFS call statfs\n");
542 nfs_fattr_init(stat
->fattr
);
543 status
= rpc_call_sync(server
->client
, &msg
, 0);
544 dprintk("NFS reply statfs: %d\n", status
);
547 stat
->tbytes
= (u64
)fsinfo
.blocks
* fsinfo
.bsize
;
548 stat
->fbytes
= (u64
)fsinfo
.bfree
* fsinfo
.bsize
;
549 stat
->abytes
= (u64
)fsinfo
.bavail
* fsinfo
.bsize
;
558 nfs_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
559 struct nfs_fsinfo
*info
)
561 struct nfs2_fsstat fsinfo
;
562 struct rpc_message msg
= {
563 .rpc_proc
= &nfs_procedures
[NFSPROC_STATFS
],
569 dprintk("NFS call fsinfo\n");
570 nfs_fattr_init(info
->fattr
);
571 status
= rpc_call_sync(server
->client
, &msg
, 0);
572 dprintk("NFS reply fsinfo: %d\n", status
);
575 info
->rtmax
= NFS_MAXDATA
;
576 info
->rtpref
= fsinfo
.tsize
;
577 info
->rtmult
= fsinfo
.bsize
;
578 info
->wtmax
= NFS_MAXDATA
;
579 info
->wtpref
= fsinfo
.tsize
;
580 info
->wtmult
= fsinfo
.bsize
;
581 info
->dtpref
= fsinfo
.tsize
;
582 info
->maxfilesize
= 0x7FFFFFFF;
583 info
->lease_time
= 0;
589 nfs_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
590 struct nfs_pathconf
*info
)
593 info
->max_namelen
= NFS2_MAXNAMLEN
;
597 static int nfs_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
599 struct inode
*inode
= hdr
->inode
;
601 nfs_invalidate_atime(inode
);
602 if (task
->tk_status
>= 0) {
603 nfs_refresh_inode(inode
, hdr
->res
.fattr
);
604 /* Emulate the eof flag, which isn't normally needed in NFSv2
605 * as it is guaranteed to always return the file attributes
607 if ((hdr
->res
.count
== 0 && hdr
->args
.count
> 0) ||
608 hdr
->args
.offset
+ hdr
->res
.count
>= hdr
->res
.fattr
->size
)
614 static void nfs_proc_read_setup(struct nfs_pgio_header
*hdr
,
615 struct rpc_message
*msg
)
617 msg
->rpc_proc
= &nfs_procedures
[NFSPROC_READ
];
620 static int nfs_proc_pgio_rpc_prepare(struct rpc_task
*task
,
621 struct nfs_pgio_header
*hdr
)
623 rpc_call_start(task
);
627 static int nfs_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
629 if (task
->tk_status
>= 0) {
630 hdr
->res
.count
= hdr
->args
.count
;
631 nfs_writeback_update_inode(hdr
);
636 static void nfs_proc_write_setup(struct nfs_pgio_header
*hdr
,
637 struct rpc_message
*msg
,
638 struct rpc_clnt
**clnt
)
640 /* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */
641 hdr
->args
.stable
= NFS_FILE_SYNC
;
642 msg
->rpc_proc
= &nfs_procedures
[NFSPROC_WRITE
];
645 static void nfs_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
651 nfs_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
,
652 struct rpc_clnt
**clnt
)
658 nfs_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*fl
)
660 struct inode
*inode
= file_inode(filp
);
662 return nlmclnt_proc(NFS_SERVER(inode
)->nlm_host
, cmd
, fl
, NULL
);
665 /* Helper functions for NFS lock bounds checking */
666 #define NFS_LOCK32_OFFSET_MAX ((__s32)0x7fffffffUL)
667 static int nfs_lock_check_bounds(const struct file_lock
*fl
)
671 start
= (__s32
)fl
->fl_start
;
672 if ((loff_t
)start
!= fl
->fl_start
)
675 if (fl
->fl_end
!= OFFSET_MAX
) {
676 end
= (__s32
)fl
->fl_end
;
677 if ((loff_t
)end
!= fl
->fl_end
)
680 end
= NFS_LOCK32_OFFSET_MAX
;
682 if (start
< 0 || start
> end
)
689 static int nfs_have_delegation(struct inode
*inode
, fmode_t flags
)
694 static const struct inode_operations nfs_dir_inode_operations
= {
695 .create
= nfs_create
,
696 .lookup
= nfs_lookup
,
698 .unlink
= nfs_unlink
,
699 .symlink
= nfs_symlink
,
703 .rename
= nfs_rename
,
704 .permission
= nfs_permission
,
705 .getattr
= nfs_getattr
,
706 .setattr
= nfs_setattr
,
709 static const struct inode_operations nfs_file_inode_operations
= {
710 .permission
= nfs_permission
,
711 .getattr
= nfs_getattr
,
712 .setattr
= nfs_setattr
,
715 const struct nfs_rpc_ops nfs_v2_clientops
= {
716 .version
= 2, /* protocol version */
717 .dentry_ops
= &nfs_dentry_operations
,
718 .dir_inode_ops
= &nfs_dir_inode_operations
,
719 .file_inode_ops
= &nfs_file_inode_operations
,
720 .file_ops
= &nfs_file_operations
,
721 .getroot
= nfs_proc_get_root
,
722 .submount
= nfs_submount
,
723 .try_get_tree
= nfs_try_get_tree
,
724 .getattr
= nfs_proc_getattr
,
725 .setattr
= nfs_proc_setattr
,
726 .lookup
= nfs_proc_lookup
,
727 .access
= NULL
, /* access */
728 .readlink
= nfs_proc_readlink
,
729 .create
= nfs_proc_create
,
730 .remove
= nfs_proc_remove
,
731 .unlink_setup
= nfs_proc_unlink_setup
,
732 .unlink_rpc_prepare
= nfs_proc_unlink_rpc_prepare
,
733 .unlink_done
= nfs_proc_unlink_done
,
734 .rename_setup
= nfs_proc_rename_setup
,
735 .rename_rpc_prepare
= nfs_proc_rename_rpc_prepare
,
736 .rename_done
= nfs_proc_rename_done
,
737 .link
= nfs_proc_link
,
738 .symlink
= nfs_proc_symlink
,
739 .mkdir
= nfs_proc_mkdir
,
740 .rmdir
= nfs_proc_rmdir
,
741 .readdir
= nfs_proc_readdir
,
742 .mknod
= nfs_proc_mknod
,
743 .statfs
= nfs_proc_statfs
,
744 .fsinfo
= nfs_proc_fsinfo
,
745 .pathconf
= nfs_proc_pathconf
,
746 .decode_dirent
= nfs2_decode_dirent
,
747 .pgio_rpc_prepare
= nfs_proc_pgio_rpc_prepare
,
748 .read_setup
= nfs_proc_read_setup
,
749 .read_done
= nfs_read_done
,
750 .write_setup
= nfs_proc_write_setup
,
751 .write_done
= nfs_write_done
,
752 .commit_setup
= nfs_proc_commit_setup
,
753 .commit_rpc_prepare
= nfs_proc_commit_rpc_prepare
,
754 .lock
= nfs_proc_lock
,
755 .lock_check_bounds
= nfs_lock_check_bounds
,
756 .close_context
= nfs_close_context
,
757 .have_delegation
= nfs_have_delegation
,
758 .alloc_client
= nfs_alloc_client
,
759 .init_client
= nfs_init_client
,
760 .free_client
= nfs_free_client
,
761 .create_server
= nfs_create_server
,
762 .clone_server
= nfs_clone_server
,