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 freezable_schedule_timeout_killable_unsafe(NFS_JUKEBOX_RETRY_TIME
);
41 } while (!fatal_signal_pending(current
));
45 #define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags)
48 nfs3_async_handle_jukebox(struct rpc_task
*task
, struct inode
*inode
)
50 if (task
->tk_status
!= -EJUKEBOX
)
52 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 nfs4_label
*label
,
107 struct rpc_message msg
= {
108 .rpc_proc
= &nfs3_procedures
[NFS3PROC_GETATTR
],
114 dprintk("NFS call getattr\n");
115 nfs_fattr_init(fattr
);
116 status
= rpc_call_sync(server
->client
, &msg
, 0);
117 dprintk("NFS reply getattr: %d\n", status
);
122 nfs3_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
125 struct inode
*inode
= d_inode(dentry
);
126 struct nfs3_sattrargs arg
= {
130 struct rpc_message msg
= {
131 .rpc_proc
= &nfs3_procedures
[NFS3PROC_SETATTR
],
137 dprintk("NFS call setattr\n");
138 if (sattr
->ia_valid
& ATTR_FILE
)
139 msg
.rpc_cred
= nfs_file_cred(sattr
->ia_file
);
140 nfs_fattr_init(fattr
);
141 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
143 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
144 nfs_zap_acl_cache(inode
);
145 nfs_setattr_update_inode(inode
, sattr
, fattr
);
147 dprintk("NFS reply setattr: %d\n", status
);
152 nfs3_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
153 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
154 struct nfs4_label
*label
)
156 struct nfs3_diropargs arg
= {
161 struct nfs3_diropres res
= {
165 struct rpc_message msg
= {
166 .rpc_proc
= &nfs3_procedures
[NFS3PROC_LOOKUP
],
172 dprintk("NFS call lookup %s\n", name
->name
);
173 res
.dir_attr
= nfs_alloc_fattr();
174 if (res
.dir_attr
== NULL
)
177 nfs_fattr_init(fattr
);
178 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
179 nfs_refresh_inode(dir
, res
.dir_attr
);
180 if (status
>= 0 && !(fattr
->valid
& NFS_ATTR_FATTR
)) {
181 msg
.rpc_proc
= &nfs3_procedures
[NFS3PROC_GETATTR
];
182 msg
.rpc_argp
= fhandle
;
183 msg
.rpc_resp
= fattr
;
184 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
186 nfs_free_fattr(res
.dir_attr
);
187 dprintk("NFS reply lookup: %d\n", status
);
191 static int nfs3_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
193 struct nfs3_accessargs arg
= {
195 .access
= entry
->mask
,
197 struct nfs3_accessres res
;
198 struct rpc_message msg
= {
199 .rpc_proc
= &nfs3_procedures
[NFS3PROC_ACCESS
],
202 .rpc_cred
= entry
->cred
,
204 int status
= -ENOMEM
;
206 dprintk("NFS call access\n");
207 res
.fattr
= nfs_alloc_fattr();
208 if (res
.fattr
== NULL
)
211 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
212 nfs_refresh_inode(inode
, res
.fattr
);
214 nfs_access_set_mask(entry
, res
.access
);
215 nfs_free_fattr(res
.fattr
);
217 dprintk("NFS reply access: %d\n", status
);
221 static int nfs3_proc_readlink(struct inode
*inode
, struct page
*page
,
222 unsigned int pgbase
, unsigned int pglen
)
224 struct nfs_fattr
*fattr
;
225 struct nfs3_readlinkargs args
= {
231 struct rpc_message msg
= {
232 .rpc_proc
= &nfs3_procedures
[NFS3PROC_READLINK
],
235 int status
= -ENOMEM
;
237 dprintk("NFS call readlink\n");
238 fattr
= nfs_alloc_fattr();
241 msg
.rpc_resp
= fattr
;
243 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
244 nfs_refresh_inode(inode
, fattr
);
245 nfs_free_fattr(fattr
);
247 dprintk("NFS reply readlink: %d\n", status
);
251 struct nfs3_createdata
{
252 struct rpc_message msg
;
254 struct nfs3_createargs create
;
255 struct nfs3_mkdirargs mkdir
;
256 struct nfs3_symlinkargs symlink
;
257 struct nfs3_mknodargs mknod
;
259 struct nfs3_diropres res
;
261 struct nfs_fattr fattr
;
262 struct nfs_fattr dir_attr
;
265 static struct nfs3_createdata
*nfs3_alloc_createdata(void)
267 struct nfs3_createdata
*data
;
269 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
271 data
->msg
.rpc_argp
= &data
->arg
;
272 data
->msg
.rpc_resp
= &data
->res
;
273 data
->res
.fh
= &data
->fh
;
274 data
->res
.fattr
= &data
->fattr
;
275 data
->res
.dir_attr
= &data
->dir_attr
;
276 nfs_fattr_init(data
->res
.fattr
);
277 nfs_fattr_init(data
->res
.dir_attr
);
282 static struct dentry
*
283 nfs3_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs3_createdata
*data
)
287 status
= rpc_call_sync(NFS_CLIENT(dir
), &data
->msg
, 0);
288 nfs_post_op_update_inode(dir
, data
->res
.dir_attr
);
290 return ERR_PTR(status
);
292 return nfs_add_or_obtain(dentry
, data
->res
.fh
, data
->res
.fattr
, NULL
);
295 static void nfs3_free_createdata(struct nfs3_createdata
*data
)
301 * Create a regular file.
304 nfs3_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
307 struct posix_acl
*default_acl
, *acl
;
308 struct nfs3_createdata
*data
;
309 struct dentry
*d_alias
;
310 int status
= -ENOMEM
;
312 dprintk("NFS call create %pd\n", dentry
);
314 data
= nfs3_alloc_createdata();
318 data
->msg
.rpc_proc
= &nfs3_procedures
[NFS3PROC_CREATE
];
319 data
->arg
.create
.fh
= NFS_FH(dir
);
320 data
->arg
.create
.name
= dentry
->d_name
.name
;
321 data
->arg
.create
.len
= dentry
->d_name
.len
;
322 data
->arg
.create
.sattr
= sattr
;
324 data
->arg
.create
.createmode
= NFS3_CREATE_UNCHECKED
;
325 if (flags
& O_EXCL
) {
326 data
->arg
.create
.createmode
= NFS3_CREATE_EXCLUSIVE
;
327 data
->arg
.create
.verifier
[0] = cpu_to_be32(jiffies
);
328 data
->arg
.create
.verifier
[1] = cpu_to_be32(current
->pid
);
331 status
= posix_acl_create(dir
, &sattr
->ia_mode
, &default_acl
, &acl
);
336 d_alias
= nfs3_do_create(dir
, dentry
, data
);
337 status
= PTR_ERR_OR_ZERO(d_alias
);
339 if (status
!= -ENOTSUPP
)
341 /* If the server doesn't support the exclusive creation
342 * semantics, try again with simple 'guarded' mode. */
343 switch (data
->arg
.create
.createmode
) {
344 case NFS3_CREATE_EXCLUSIVE
:
345 data
->arg
.create
.createmode
= NFS3_CREATE_GUARDED
;
348 case NFS3_CREATE_GUARDED
:
349 data
->arg
.create
.createmode
= NFS3_CREATE_UNCHECKED
;
352 case NFS3_CREATE_UNCHECKED
:
355 nfs_fattr_init(data
->res
.dir_attr
);
356 nfs_fattr_init(data
->res
.fattr
);
360 goto out_release_acls
;
365 /* When we created the file with exclusive semantics, make
366 * sure we set the attributes afterwards. */
367 if (data
->arg
.create
.createmode
== NFS3_CREATE_EXCLUSIVE
) {
368 dprintk("NFS call setattr (post-create)\n");
370 if (!(sattr
->ia_valid
& ATTR_ATIME_SET
))
371 sattr
->ia_valid
|= ATTR_ATIME
;
372 if (!(sattr
->ia_valid
& ATTR_MTIME_SET
))
373 sattr
->ia_valid
|= ATTR_MTIME
;
375 /* Note: we could use a guarded setattr here, but I'm
376 * not sure this buys us anything (and I'd have
377 * to revamp the NFSv3 XDR code) */
378 status
= nfs3_proc_setattr(dentry
, data
->res
.fattr
, sattr
);
379 nfs_post_op_update_inode(d_inode(dentry
), data
->res
.fattr
);
380 dprintk("NFS reply setattr (post-create): %d\n", status
);
385 status
= nfs3_proc_setacls(d_inode(dentry
), acl
, default_acl
);
390 posix_acl_release(acl
);
391 posix_acl_release(default_acl
);
393 nfs3_free_createdata(data
);
394 dprintk("NFS reply create: %d\n", status
);
399 nfs3_proc_remove(struct inode
*dir
, struct dentry
*dentry
)
401 struct nfs_removeargs arg
= {
403 .name
= dentry
->d_name
,
405 struct nfs_removeres res
;
406 struct rpc_message msg
= {
407 .rpc_proc
= &nfs3_procedures
[NFS3PROC_REMOVE
],
411 int status
= -ENOMEM
;
413 dprintk("NFS call remove %pd2\n", dentry
);
414 res
.dir_attr
= nfs_alloc_fattr();
415 if (res
.dir_attr
== NULL
)
418 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
419 nfs_post_op_update_inode(dir
, res
.dir_attr
);
420 nfs_free_fattr(res
.dir_attr
);
422 dprintk("NFS reply remove: %d\n", status
);
427 nfs3_proc_unlink_setup(struct rpc_message
*msg
,
428 struct dentry
*dentry
,
431 msg
->rpc_proc
= &nfs3_procedures
[NFS3PROC_REMOVE
];
434 static void nfs3_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
436 rpc_call_start(task
);
440 nfs3_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
442 struct nfs_removeres
*res
;
443 if (nfs3_async_handle_jukebox(task
, dir
))
445 res
= task
->tk_msg
.rpc_resp
;
446 nfs_post_op_update_inode(dir
, res
->dir_attr
);
451 nfs3_proc_rename_setup(struct rpc_message
*msg
,
452 struct dentry
*old_dentry
,
453 struct dentry
*new_dentry
)
455 msg
->rpc_proc
= &nfs3_procedures
[NFS3PROC_RENAME
];
458 static void nfs3_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
460 rpc_call_start(task
);
464 nfs3_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
465 struct inode
*new_dir
)
467 struct nfs_renameres
*res
;
469 if (nfs3_async_handle_jukebox(task
, old_dir
))
471 res
= task
->tk_msg
.rpc_resp
;
473 nfs_post_op_update_inode(old_dir
, res
->old_fattr
);
474 nfs_post_op_update_inode(new_dir
, res
->new_fattr
);
479 nfs3_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
481 struct nfs3_linkargs arg
= {
482 .fromfh
= NFS_FH(inode
),
484 .toname
= name
->name
,
487 struct nfs3_linkres res
;
488 struct rpc_message msg
= {
489 .rpc_proc
= &nfs3_procedures
[NFS3PROC_LINK
],
493 int status
= -ENOMEM
;
495 dprintk("NFS call link %s\n", name
->name
);
496 res
.fattr
= nfs_alloc_fattr();
497 res
.dir_attr
= nfs_alloc_fattr();
498 if (res
.fattr
== NULL
|| res
.dir_attr
== NULL
)
501 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
502 nfs_post_op_update_inode(dir
, res
.dir_attr
);
503 nfs_post_op_update_inode(inode
, res
.fattr
);
505 nfs_free_fattr(res
.dir_attr
);
506 nfs_free_fattr(res
.fattr
);
507 dprintk("NFS reply link: %d\n", status
);
512 nfs3_proc_symlink(struct inode
*dir
, struct dentry
*dentry
, struct page
*page
,
513 unsigned int len
, struct iattr
*sattr
)
515 struct nfs3_createdata
*data
;
516 struct dentry
*d_alias
;
517 int status
= -ENOMEM
;
519 if (len
> NFS3_MAXPATHLEN
)
520 return -ENAMETOOLONG
;
522 dprintk("NFS call symlink %pd\n", dentry
);
524 data
= nfs3_alloc_createdata();
527 data
->msg
.rpc_proc
= &nfs3_procedures
[NFS3PROC_SYMLINK
];
528 data
->arg
.symlink
.fromfh
= NFS_FH(dir
);
529 data
->arg
.symlink
.fromname
= dentry
->d_name
.name
;
530 data
->arg
.symlink
.fromlen
= dentry
->d_name
.len
;
531 data
->arg
.symlink
.pages
= &page
;
532 data
->arg
.symlink
.pathlen
= len
;
533 data
->arg
.symlink
.sattr
= sattr
;
535 d_alias
= nfs3_do_create(dir
, dentry
, data
);
536 status
= PTR_ERR_OR_ZERO(d_alias
);
541 nfs3_free_createdata(data
);
543 dprintk("NFS reply symlink: %d\n", status
);
548 nfs3_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
)
550 struct posix_acl
*default_acl
, *acl
;
551 struct nfs3_createdata
*data
;
552 struct dentry
*d_alias
;
553 int status
= -ENOMEM
;
555 dprintk("NFS call mkdir %pd\n", dentry
);
557 data
= nfs3_alloc_createdata();
561 status
= posix_acl_create(dir
, &sattr
->ia_mode
, &default_acl
, &acl
);
565 data
->msg
.rpc_proc
= &nfs3_procedures
[NFS3PROC_MKDIR
];
566 data
->arg
.mkdir
.fh
= NFS_FH(dir
);
567 data
->arg
.mkdir
.name
= dentry
->d_name
.name
;
568 data
->arg
.mkdir
.len
= dentry
->d_name
.len
;
569 data
->arg
.mkdir
.sattr
= sattr
;
571 d_alias
= nfs3_do_create(dir
, dentry
, data
);
572 status
= PTR_ERR_OR_ZERO(d_alias
);
575 goto out_release_acls
;
580 status
= nfs3_proc_setacls(d_inode(dentry
), acl
, default_acl
);
584 posix_acl_release(acl
);
585 posix_acl_release(default_acl
);
587 nfs3_free_createdata(data
);
588 dprintk("NFS reply mkdir: %d\n", status
);
593 nfs3_proc_rmdir(struct inode
*dir
, const struct qstr
*name
)
595 struct nfs_fattr
*dir_attr
;
596 struct nfs3_diropargs arg
= {
601 struct rpc_message msg
= {
602 .rpc_proc
= &nfs3_procedures
[NFS3PROC_RMDIR
],
605 int status
= -ENOMEM
;
607 dprintk("NFS call rmdir %s\n", name
->name
);
608 dir_attr
= nfs_alloc_fattr();
609 if (dir_attr
== NULL
)
612 msg
.rpc_resp
= dir_attr
;
613 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
614 nfs_post_op_update_inode(dir
, dir_attr
);
615 nfs_free_fattr(dir_attr
);
617 dprintk("NFS reply rmdir: %d\n", status
);
622 * The READDIR implementation is somewhat hackish - we pass the user buffer
623 * to the encode function, which installs it in the receive iovec.
624 * The decode function itself doesn't perform any decoding, it just makes
625 * sure the reply is syntactically correct.
627 * Also note that this implementation handles both plain readdir and
631 nfs3_proc_readdir(struct dentry
*dentry
, const struct cred
*cred
,
632 u64 cookie
, struct page
**pages
, unsigned int count
, bool plus
)
634 struct inode
*dir
= d_inode(dentry
);
635 __be32
*verf
= NFS_I(dir
)->cookieverf
;
636 struct nfs3_readdirargs arg
= {
639 .verf
= {verf
[0], verf
[1]},
644 struct nfs3_readdirres res
= {
648 struct rpc_message msg
= {
649 .rpc_proc
= &nfs3_procedures
[NFS3PROC_READDIR
],
654 int status
= -ENOMEM
;
657 msg
.rpc_proc
= &nfs3_procedures
[NFS3PROC_READDIRPLUS
];
659 dprintk("NFS call readdir%s %d\n",
660 plus
? "plus" : "", (unsigned int) cookie
);
662 res
.dir_attr
= nfs_alloc_fattr();
663 if (res
.dir_attr
== NULL
)
666 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
668 nfs_invalidate_atime(dir
);
669 nfs_refresh_inode(dir
, res
.dir_attr
);
671 nfs_free_fattr(res
.dir_attr
);
673 dprintk("NFS reply readdir%s: %d\n",
674 plus
? "plus" : "", status
);
679 nfs3_proc_mknod(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
682 struct posix_acl
*default_acl
, *acl
;
683 struct nfs3_createdata
*data
;
684 struct dentry
*d_alias
;
685 int status
= -ENOMEM
;
687 dprintk("NFS call mknod %pd %u:%u\n", dentry
,
688 MAJOR(rdev
), MINOR(rdev
));
690 data
= nfs3_alloc_createdata();
694 status
= posix_acl_create(dir
, &sattr
->ia_mode
, &default_acl
, &acl
);
698 data
->msg
.rpc_proc
= &nfs3_procedures
[NFS3PROC_MKNOD
];
699 data
->arg
.mknod
.fh
= NFS_FH(dir
);
700 data
->arg
.mknod
.name
= dentry
->d_name
.name
;
701 data
->arg
.mknod
.len
= dentry
->d_name
.len
;
702 data
->arg
.mknod
.sattr
= sattr
;
703 data
->arg
.mknod
.rdev
= rdev
;
705 switch (sattr
->ia_mode
& S_IFMT
) {
707 data
->arg
.mknod
.type
= NF3BLK
;
710 data
->arg
.mknod
.type
= NF3CHR
;
713 data
->arg
.mknod
.type
= NF3FIFO
;
716 data
->arg
.mknod
.type
= NF3SOCK
;
723 d_alias
= nfs3_do_create(dir
, dentry
, data
);
724 status
= PTR_ERR_OR_ZERO(d_alias
);
726 goto out_release_acls
;
731 status
= nfs3_proc_setacls(d_inode(dentry
), acl
, default_acl
);
735 posix_acl_release(acl
);
736 posix_acl_release(default_acl
);
738 nfs3_free_createdata(data
);
739 dprintk("NFS reply mknod: %d\n", status
);
744 nfs3_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
745 struct nfs_fsstat
*stat
)
747 struct rpc_message msg
= {
748 .rpc_proc
= &nfs3_procedures
[NFS3PROC_FSSTAT
],
754 dprintk("NFS call fsstat\n");
755 nfs_fattr_init(stat
->fattr
);
756 status
= rpc_call_sync(server
->client
, &msg
, 0);
757 dprintk("NFS reply fsstat: %d\n", status
);
762 do_proc_fsinfo(struct rpc_clnt
*client
, struct nfs_fh
*fhandle
,
763 struct nfs_fsinfo
*info
)
765 struct rpc_message msg
= {
766 .rpc_proc
= &nfs3_procedures
[NFS3PROC_FSINFO
],
772 dprintk("NFS call fsinfo\n");
773 nfs_fattr_init(info
->fattr
);
774 status
= rpc_call_sync(client
, &msg
, 0);
775 dprintk("NFS reply fsinfo: %d\n", status
);
780 * Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via
784 nfs3_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
785 struct nfs_fsinfo
*info
)
789 status
= do_proc_fsinfo(server
->client
, fhandle
, info
);
790 if (status
&& server
->nfs_client
->cl_rpcclient
!= server
->client
)
791 status
= do_proc_fsinfo(server
->nfs_client
->cl_rpcclient
, fhandle
, info
);
796 nfs3_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
797 struct nfs_pathconf
*info
)
799 struct rpc_message msg
= {
800 .rpc_proc
= &nfs3_procedures
[NFS3PROC_PATHCONF
],
806 dprintk("NFS call pathconf\n");
807 nfs_fattr_init(info
->fattr
);
808 status
= rpc_call_sync(server
->client
, &msg
, 0);
809 dprintk("NFS reply pathconf: %d\n", status
);
813 static int nfs3_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
815 struct inode
*inode
= hdr
->inode
;
816 struct nfs_server
*server
= NFS_SERVER(inode
);
818 if (hdr
->pgio_done_cb
!= NULL
)
819 return hdr
->pgio_done_cb(task
, hdr
);
821 if (nfs3_async_handle_jukebox(task
, inode
))
824 if (task
->tk_status
>= 0 && !server
->read_hdrsize
)
825 cmpxchg(&server
->read_hdrsize
, 0, hdr
->res
.replen
);
827 nfs_invalidate_atime(inode
);
828 nfs_refresh_inode(inode
, &hdr
->fattr
);
832 static void nfs3_proc_read_setup(struct nfs_pgio_header
*hdr
,
833 struct rpc_message
*msg
)
835 msg
->rpc_proc
= &nfs3_procedures
[NFS3PROC_READ
];
836 hdr
->args
.replen
= NFS_SERVER(hdr
->inode
)->read_hdrsize
;
839 static int nfs3_proc_pgio_rpc_prepare(struct rpc_task
*task
,
840 struct nfs_pgio_header
*hdr
)
842 rpc_call_start(task
);
846 static int nfs3_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
848 struct inode
*inode
= hdr
->inode
;
850 if (hdr
->pgio_done_cb
!= NULL
)
851 return hdr
->pgio_done_cb(task
, hdr
);
853 if (nfs3_async_handle_jukebox(task
, inode
))
855 if (task
->tk_status
>= 0)
856 nfs_writeback_update_inode(hdr
);
860 static void nfs3_proc_write_setup(struct nfs_pgio_header
*hdr
,
861 struct rpc_message
*msg
,
862 struct rpc_clnt
**clnt
)
864 msg
->rpc_proc
= &nfs3_procedures
[NFS3PROC_WRITE
];
867 static void nfs3_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
869 rpc_call_start(task
);
872 static int nfs3_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
874 if (data
->commit_done_cb
!= NULL
)
875 return data
->commit_done_cb(task
, data
);
877 if (nfs3_async_handle_jukebox(task
, data
->inode
))
879 nfs_refresh_inode(data
->inode
, data
->res
.fattr
);
883 static void nfs3_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
,
884 struct rpc_clnt
**clnt
)
886 msg
->rpc_proc
= &nfs3_procedures
[NFS3PROC_COMMIT
];
889 static void nfs3_nlm_alloc_call(void *data
)
891 struct nfs_lock_context
*l_ctx
= data
;
892 if (l_ctx
&& test_bit(NFS_CONTEXT_UNLOCK
, &l_ctx
->open_context
->flags
)) {
893 get_nfs_open_context(l_ctx
->open_context
);
894 nfs_get_lock_context(l_ctx
->open_context
);
898 static bool nfs3_nlm_unlock_prepare(struct rpc_task
*task
, void *data
)
900 struct nfs_lock_context
*l_ctx
= data
;
901 if (l_ctx
&& test_bit(NFS_CONTEXT_UNLOCK
, &l_ctx
->open_context
->flags
))
902 return nfs_async_iocounter_wait(task
, l_ctx
);
907 static void nfs3_nlm_release_call(void *data
)
909 struct nfs_lock_context
*l_ctx
= data
;
910 struct nfs_open_context
*ctx
;
911 if (l_ctx
&& test_bit(NFS_CONTEXT_UNLOCK
, &l_ctx
->open_context
->flags
)) {
912 ctx
= l_ctx
->open_context
;
913 nfs_put_lock_context(l_ctx
);
914 put_nfs_open_context(ctx
);
918 static const struct nlmclnt_operations nlmclnt_fl_close_lock_ops
= {
919 .nlmclnt_alloc_call
= nfs3_nlm_alloc_call
,
920 .nlmclnt_unlock_prepare
= nfs3_nlm_unlock_prepare
,
921 .nlmclnt_release_call
= nfs3_nlm_release_call
,
925 nfs3_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*fl
)
927 struct inode
*inode
= file_inode(filp
);
928 struct nfs_lock_context
*l_ctx
= NULL
;
929 struct nfs_open_context
*ctx
= nfs_file_open_context(filp
);
932 if (fl
->fl_flags
& FL_CLOSE
) {
933 l_ctx
= nfs_get_lock_context(ctx
);
937 set_bit(NFS_CONTEXT_UNLOCK
, &ctx
->flags
);
940 status
= nlmclnt_proc(NFS_SERVER(inode
)->nlm_host
, cmd
, fl
, l_ctx
);
943 nfs_put_lock_context(l_ctx
);
948 static int nfs3_have_delegation(struct inode
*inode
, fmode_t flags
)
953 static const struct inode_operations nfs3_dir_inode_operations
= {
954 .create
= nfs_create
,
955 .lookup
= nfs_lookup
,
957 .unlink
= nfs_unlink
,
958 .symlink
= nfs_symlink
,
962 .rename
= nfs_rename
,
963 .permission
= nfs_permission
,
964 .getattr
= nfs_getattr
,
965 .setattr
= nfs_setattr
,
966 #ifdef CONFIG_NFS_V3_ACL
967 .listxattr
= nfs3_listxattr
,
968 .get_acl
= nfs3_get_acl
,
969 .set_acl
= nfs3_set_acl
,
973 static const struct inode_operations nfs3_file_inode_operations
= {
974 .permission
= nfs_permission
,
975 .getattr
= nfs_getattr
,
976 .setattr
= nfs_setattr
,
977 #ifdef CONFIG_NFS_V3_ACL
978 .listxattr
= nfs3_listxattr
,
979 .get_acl
= nfs3_get_acl
,
980 .set_acl
= nfs3_set_acl
,
984 const struct nfs_rpc_ops nfs_v3_clientops
= {
985 .version
= 3, /* protocol version */
986 .dentry_ops
= &nfs_dentry_operations
,
987 .dir_inode_ops
= &nfs3_dir_inode_operations
,
988 .file_inode_ops
= &nfs3_file_inode_operations
,
989 .file_ops
= &nfs_file_operations
,
990 .nlmclnt_ops
= &nlmclnt_fl_close_lock_ops
,
991 .getroot
= nfs3_proc_get_root
,
992 .submount
= nfs_submount
,
993 .try_mount
= nfs_try_mount
,
994 .getattr
= nfs3_proc_getattr
,
995 .setattr
= nfs3_proc_setattr
,
996 .lookup
= nfs3_proc_lookup
,
997 .access
= nfs3_proc_access
,
998 .readlink
= nfs3_proc_readlink
,
999 .create
= nfs3_proc_create
,
1000 .remove
= nfs3_proc_remove
,
1001 .unlink_setup
= nfs3_proc_unlink_setup
,
1002 .unlink_rpc_prepare
= nfs3_proc_unlink_rpc_prepare
,
1003 .unlink_done
= nfs3_proc_unlink_done
,
1004 .rename_setup
= nfs3_proc_rename_setup
,
1005 .rename_rpc_prepare
= nfs3_proc_rename_rpc_prepare
,
1006 .rename_done
= nfs3_proc_rename_done
,
1007 .link
= nfs3_proc_link
,
1008 .symlink
= nfs3_proc_symlink
,
1009 .mkdir
= nfs3_proc_mkdir
,
1010 .rmdir
= nfs3_proc_rmdir
,
1011 .readdir
= nfs3_proc_readdir
,
1012 .mknod
= nfs3_proc_mknod
,
1013 .statfs
= nfs3_proc_statfs
,
1014 .fsinfo
= nfs3_proc_fsinfo
,
1015 .pathconf
= nfs3_proc_pathconf
,
1016 .decode_dirent
= nfs3_decode_dirent
,
1017 .pgio_rpc_prepare
= nfs3_proc_pgio_rpc_prepare
,
1018 .read_setup
= nfs3_proc_read_setup
,
1019 .read_done
= nfs3_read_done
,
1020 .write_setup
= nfs3_proc_write_setup
,
1021 .write_done
= nfs3_write_done
,
1022 .commit_setup
= nfs3_proc_commit_setup
,
1023 .commit_rpc_prepare
= nfs3_proc_commit_rpc_prepare
,
1024 .commit_done
= nfs3_commit_done
,
1025 .lock
= nfs3_proc_lock
,
1026 .clear_acl_cache
= forget_all_cached_acls
,
1027 .close_context
= nfs_close_context
,
1028 .have_delegation
= nfs3_have_delegation
,
1029 .alloc_client
= nfs_alloc_client
,
1030 .init_client
= nfs_init_client
,
1031 .free_client
= nfs_free_client
,
1032 .create_server
= nfs3_create_server
,
1033 .clone_server
= nfs3_clone_server
,