4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/utsname.h>
40 #include <linux/delay.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/sunrpc/clnt.h>
44 #include <linux/nfs.h>
45 #include <linux/nfs4.h>
46 #include <linux/nfs_fs.h>
47 #include <linux/nfs_page.h>
48 #include <linux/smp_lock.h>
49 #include <linux/namei.h>
50 #include <linux/mount.h>
53 #include "delegation.h"
56 #define NFSDBG_FACILITY NFSDBG_PROC
58 #define NFS4_POLL_RETRY_MIN (HZ/10)
59 #define NFS4_POLL_RETRY_MAX (15*HZ)
62 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
63 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
64 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*);
65 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
);
66 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
);
67 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
);
69 /* Prevent leaks of NFSv4 errors into userland */
70 int nfs4_map_errors(int err
)
73 dprintk("%s could not handle NFSv4 error %d\n",
81 * This is our standard bitmap for GETATTR requests.
83 const u32 nfs4_fattr_bitmap
[2] = {
88 | FATTR4_WORD0_FILEID
,
90 | FATTR4_WORD1_NUMLINKS
92 | FATTR4_WORD1_OWNER_GROUP
94 | FATTR4_WORD1_SPACE_USED
95 | FATTR4_WORD1_TIME_ACCESS
96 | FATTR4_WORD1_TIME_METADATA
97 | FATTR4_WORD1_TIME_MODIFY
100 const u32 nfs4_statfs_bitmap
[2] = {
101 FATTR4_WORD0_FILES_AVAIL
102 | FATTR4_WORD0_FILES_FREE
103 | FATTR4_WORD0_FILES_TOTAL
,
104 FATTR4_WORD1_SPACE_AVAIL
105 | FATTR4_WORD1_SPACE_FREE
106 | FATTR4_WORD1_SPACE_TOTAL
109 const u32 nfs4_pathconf_bitmap
[2] = {
111 | FATTR4_WORD0_MAXNAME
,
115 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
116 | FATTR4_WORD0_MAXREAD
117 | FATTR4_WORD0_MAXWRITE
118 | FATTR4_WORD0_LEASE_TIME
,
122 const u32 nfs4_fs_locations_bitmap
[2] = {
124 | FATTR4_WORD0_CHANGE
127 | FATTR4_WORD0_FILEID
128 | FATTR4_WORD0_FS_LOCATIONS
,
130 | FATTR4_WORD1_NUMLINKS
132 | FATTR4_WORD1_OWNER_GROUP
133 | FATTR4_WORD1_RAWDEV
134 | FATTR4_WORD1_SPACE_USED
135 | FATTR4_WORD1_TIME_ACCESS
136 | FATTR4_WORD1_TIME_METADATA
137 | FATTR4_WORD1_TIME_MODIFY
138 | FATTR4_WORD1_MOUNTED_ON_FILEID
141 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
142 struct nfs4_readdir_arg
*readdir
)
146 BUG_ON(readdir
->count
< 80);
148 readdir
->cookie
= cookie
;
149 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
154 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
159 * NFSv4 servers do not return entries for '.' and '..'
160 * Therefore, we fake these entries here. We let '.'
161 * have cookie 0 and '..' have cookie 1. Note that
162 * when talking to the server, we always send cookie 0
165 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
168 *p
++ = xdr_one
; /* next */
169 *p
++ = xdr_zero
; /* cookie, first word */
170 *p
++ = xdr_one
; /* cookie, second word */
171 *p
++ = xdr_one
; /* entry len */
172 memcpy(p
, ".\0\0\0", 4); /* entry */
174 *p
++ = xdr_one
; /* bitmap length */
175 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
176 *p
++ = htonl(8); /* attribute buffer length */
177 p
= xdr_encode_hyper(p
, dentry
->d_inode
->i_ino
);
180 *p
++ = xdr_one
; /* next */
181 *p
++ = xdr_zero
; /* cookie, first word */
182 *p
++ = xdr_two
; /* cookie, second word */
183 *p
++ = xdr_two
; /* entry len */
184 memcpy(p
, "..\0\0", 4); /* entry */
186 *p
++ = xdr_one
; /* bitmap length */
187 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
188 *p
++ = htonl(8); /* attribute buffer length */
189 p
= xdr_encode_hyper(p
, dentry
->d_parent
->d_inode
->i_ino
);
191 readdir
->pgbase
= (char *)p
- (char *)start
;
192 readdir
->count
-= readdir
->pgbase
;
193 kunmap_atomic(start
, KM_USER0
);
196 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
198 struct nfs_client
*clp
= server
->nfs_client
;
199 spin_lock(&clp
->cl_lock
);
200 if (time_before(clp
->cl_last_renewal
,timestamp
))
201 clp
->cl_last_renewal
= timestamp
;
202 spin_unlock(&clp
->cl_lock
);
205 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
207 struct nfs_inode
*nfsi
= NFS_I(dir
);
209 spin_lock(&dir
->i_lock
);
210 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
211 if (cinfo
->before
== nfsi
->change_attr
&& cinfo
->atomic
)
212 nfsi
->change_attr
= cinfo
->after
;
213 spin_unlock(&dir
->i_lock
);
216 struct nfs4_opendata
{
218 struct nfs_openargs o_arg
;
219 struct nfs_openres o_res
;
220 struct nfs_open_confirmargs c_arg
;
221 struct nfs_open_confirmres c_res
;
222 struct nfs_fattr f_attr
;
223 struct nfs_fattr dir_attr
;
226 struct nfs4_state_owner
*owner
;
228 unsigned long timestamp
;
233 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
234 struct nfs4_state_owner
*sp
, int flags
,
235 const struct iattr
*attrs
)
237 struct dentry
*parent
= dget_parent(path
->dentry
);
238 struct inode
*dir
= parent
->d_inode
;
239 struct nfs_server
*server
= NFS_SERVER(dir
);
240 struct nfs4_opendata
*p
;
242 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
245 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
246 if (p
->o_arg
.seqid
== NULL
)
248 atomic_set(&p
->count
, 1);
249 p
->path
.mnt
= mntget(path
->mnt
);
250 p
->path
.dentry
= dget(path
->dentry
);
253 atomic_inc(&sp
->so_count
);
254 p
->o_arg
.fh
= NFS_FH(dir
);
255 p
->o_arg
.open_flags
= flags
,
256 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
257 p
->o_arg
.id
= sp
->so_id
;
258 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
259 p
->o_arg
.server
= server
;
260 p
->o_arg
.bitmask
= server
->attr_bitmask
;
261 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
262 p
->o_res
.f_attr
= &p
->f_attr
;
263 p
->o_res
.dir_attr
= &p
->dir_attr
;
264 p
->o_res
.server
= server
;
265 nfs_fattr_init(&p
->f_attr
);
266 nfs_fattr_init(&p
->dir_attr
);
267 if (flags
& O_EXCL
) {
268 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
271 } else if (flags
& O_CREAT
) {
272 p
->o_arg
.u
.attrs
= &p
->attrs
;
273 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
275 p
->c_arg
.fh
= &p
->o_res
.fh
;
276 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
277 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
286 static void nfs4_opendata_free(struct nfs4_opendata
*p
)
288 if (p
!= NULL
&& atomic_dec_and_test(&p
->count
)) {
289 nfs_free_seqid(p
->o_arg
.seqid
);
290 nfs4_put_state_owner(p
->owner
);
292 dput(p
->path
.dentry
);
298 /* Helper for asynchronous RPC calls */
299 static int nfs4_call_async(struct rpc_clnt
*clnt
,
300 const struct rpc_call_ops
*tk_ops
, void *calldata
)
302 struct rpc_task
*task
;
304 if (!(task
= rpc_new_task(clnt
, RPC_TASK_ASYNC
, tk_ops
, calldata
)))
310 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
315 rpc_clnt_sigmask(task
->tk_client
, &oldset
);
316 ret
= rpc_wait_for_completion_task(task
);
317 rpc_clnt_sigunmask(task
->tk_client
, &oldset
);
321 static inline void update_open_stateflags(struct nfs4_state
*state
, mode_t open_flags
)
323 switch (open_flags
) {
330 case FMODE_READ
|FMODE_WRITE
:
335 static void update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, int open_flags
)
337 struct inode
*inode
= state
->inode
;
339 open_flags
&= (FMODE_READ
|FMODE_WRITE
);
340 /* Protect against nfs4_find_state_byowner() */
341 spin_lock(&state
->owner
->so_lock
);
342 spin_lock(&inode
->i_lock
);
343 memcpy(&state
->stateid
, stateid
, sizeof(state
->stateid
));
344 update_open_stateflags(state
, open_flags
);
345 nfs4_state_set_mode_locked(state
, state
->state
| open_flags
);
346 spin_unlock(&inode
->i_lock
);
347 spin_unlock(&state
->owner
->so_lock
);
350 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
353 struct nfs4_state
*state
= NULL
;
355 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
357 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
360 state
= nfs4_get_open_state(inode
, data
->owner
);
363 update_open_stateid(state
, &data
->o_res
.stateid
, data
->o_arg
.open_flags
);
370 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
372 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
373 struct nfs_open_context
*ctx
;
375 spin_lock(&state
->inode
->i_lock
);
376 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
377 if (ctx
->state
!= state
)
379 get_nfs_open_context(ctx
);
380 spin_unlock(&state
->inode
->i_lock
);
383 spin_unlock(&state
->inode
->i_lock
);
384 return ERR_PTR(-ENOENT
);
387 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, mode_t openflags
, nfs4_stateid
*stateid
)
391 opendata
->o_arg
.open_flags
= openflags
;
392 ret
= _nfs4_proc_open(opendata
);
395 memcpy(stateid
->data
, opendata
->o_res
.stateid
.data
,
396 sizeof(stateid
->data
));
400 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
402 nfs4_stateid stateid
;
403 struct nfs4_state
*newstate
;
408 /* memory barrier prior to reading state->n_* */
410 if (state
->n_rdwr
!= 0) {
411 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &stateid
);
414 mode
|= FMODE_READ
|FMODE_WRITE
;
415 if (opendata
->o_res
.delegation_type
!= 0)
416 delegation
= opendata
->o_res
.delegation_type
;
419 if (state
->n_wronly
!= 0) {
420 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &stateid
);
424 if (opendata
->o_res
.delegation_type
!= 0)
425 delegation
= opendata
->o_res
.delegation_type
;
428 if (state
->n_rdonly
!= 0) {
429 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &stateid
);
434 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
437 if (opendata
->o_res
.delegation_type
== 0)
438 opendata
->o_res
.delegation_type
= delegation
;
439 opendata
->o_arg
.open_flags
|= mode
;
440 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
441 if (newstate
!= NULL
) {
442 if (opendata
->o_res
.delegation_type
!= 0) {
443 struct nfs_inode
*nfsi
= NFS_I(newstate
->inode
);
444 int delegation_flags
= 0;
445 if (nfsi
->delegation
)
446 delegation_flags
= nfsi
->delegation
->flags
;
447 if (!(delegation_flags
& NFS_DELEGATION_NEED_RECLAIM
))
448 nfs_inode_set_delegation(newstate
->inode
,
449 opendata
->owner
->so_cred
,
452 nfs_inode_reclaim_delegation(newstate
->inode
,
453 opendata
->owner
->so_cred
,
456 nfs4_close_state(&opendata
->path
, newstate
, opendata
->o_arg
.open_flags
);
458 if (newstate
!= state
)
465 * reclaim state on the server after a reboot.
467 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
469 struct nfs_delegation
*delegation
= NFS_I(state
->inode
)->delegation
;
470 struct nfs4_opendata
*opendata
;
471 int delegation_type
= 0;
474 if (delegation
!= NULL
) {
475 if (!(delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)) {
476 memcpy(&state
->stateid
, &delegation
->stateid
,
477 sizeof(state
->stateid
));
478 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
481 delegation_type
= delegation
->type
;
483 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, NULL
);
484 if (opendata
== NULL
)
486 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
487 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
488 nfs_copy_fh(&opendata
->o_res
.fh
, opendata
->o_arg
.fh
);
489 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
490 status
= nfs4_open_recover(opendata
, state
);
491 nfs4_opendata_free(opendata
);
495 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
497 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
498 struct nfs4_exception exception
= { };
501 err
= _nfs4_do_open_reclaim(ctx
, state
);
502 if (err
!= -NFS4ERR_DELAY
)
504 nfs4_handle_exception(server
, err
, &exception
);
505 } while (exception
.retry
);
509 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
511 struct nfs_open_context
*ctx
;
514 ctx
= nfs4_state_find_open_context(state
);
517 ret
= nfs4_do_open_reclaim(ctx
, state
);
518 put_nfs_open_context(ctx
);
522 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
524 struct nfs4_state_owner
*sp
= state
->owner
;
525 struct nfs4_opendata
*opendata
;
528 if (!test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
530 opendata
= nfs4_opendata_alloc(&ctx
->path
, sp
, 0, NULL
);
531 if (opendata
== NULL
)
533 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
534 memcpy(opendata
->o_arg
.u
.delegation
.data
, state
->stateid
.data
,
535 sizeof(opendata
->o_arg
.u
.delegation
.data
));
536 ret
= nfs4_open_recover(opendata
, state
);
537 nfs4_opendata_free(opendata
);
541 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
543 struct nfs4_exception exception
= { };
544 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
547 err
= _nfs4_open_delegation_recall(ctx
, state
);
551 case -NFS4ERR_STALE_CLIENTID
:
552 case -NFS4ERR_STALE_STATEID
:
553 case -NFS4ERR_EXPIRED
:
554 /* Don't recall a delegation if it was lost */
555 nfs4_schedule_state_recovery(server
->nfs_client
);
558 err
= nfs4_handle_exception(server
, err
, &exception
);
559 } while (exception
.retry
);
563 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
565 struct nfs4_opendata
*data
= calldata
;
566 struct rpc_message msg
= {
567 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
568 .rpc_argp
= &data
->c_arg
,
569 .rpc_resp
= &data
->c_res
,
570 .rpc_cred
= data
->owner
->so_cred
,
572 data
->timestamp
= jiffies
;
573 rpc_call_setup(task
, &msg
, 0);
576 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
578 struct nfs4_opendata
*data
= calldata
;
580 data
->rpc_status
= task
->tk_status
;
581 if (RPC_ASSASSINATED(task
))
583 if (data
->rpc_status
== 0) {
584 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
585 sizeof(data
->o_res
.stateid
.data
));
586 renew_lease(data
->o_res
.server
, data
->timestamp
);
588 nfs_increment_open_seqid(data
->rpc_status
, data
->c_arg
.seqid
);
589 nfs_confirm_seqid(&data
->owner
->so_seqid
, data
->rpc_status
);
592 static void nfs4_open_confirm_release(void *calldata
)
594 struct nfs4_opendata
*data
= calldata
;
595 struct nfs4_state
*state
= NULL
;
597 /* If this request hasn't been cancelled, do nothing */
598 if (data
->cancelled
== 0)
600 /* In case of error, no cleanup! */
601 if (data
->rpc_status
!= 0)
603 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
604 state
= nfs4_opendata_to_nfs4_state(data
);
606 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
608 nfs4_opendata_free(data
);
611 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
612 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
613 .rpc_call_done
= nfs4_open_confirm_done
,
614 .rpc_release
= nfs4_open_confirm_release
,
618 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
620 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
622 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
623 struct rpc_task
*task
;
626 atomic_inc(&data
->count
);
628 * If rpc_run_task() ends up calling ->rpc_release(), we
629 * want to ensure that it takes the 'error' code path.
631 data
->rpc_status
= -ENOMEM
;
632 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_confirm_ops
, data
);
634 return PTR_ERR(task
);
635 status
= nfs4_wait_for_completion_rpc_task(task
);
640 status
= data
->rpc_status
;
645 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
647 struct nfs4_opendata
*data
= calldata
;
648 struct nfs4_state_owner
*sp
= data
->owner
;
649 struct rpc_message msg
= {
650 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
651 .rpc_argp
= &data
->o_arg
,
652 .rpc_resp
= &data
->o_res
,
653 .rpc_cred
= sp
->so_cred
,
656 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
658 /* Update sequence id. */
659 data
->o_arg
.id
= sp
->so_id
;
660 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
661 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
662 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
663 data
->timestamp
= jiffies
;
664 rpc_call_setup(task
, &msg
, 0);
667 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
669 struct nfs4_opendata
*data
= calldata
;
671 data
->rpc_status
= task
->tk_status
;
672 if (RPC_ASSASSINATED(task
))
674 if (task
->tk_status
== 0) {
675 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
679 data
->rpc_status
= -ELOOP
;
682 data
->rpc_status
= -EISDIR
;
685 data
->rpc_status
= -ENOTDIR
;
687 renew_lease(data
->o_res
.server
, data
->timestamp
);
689 nfs_increment_open_seqid(data
->rpc_status
, data
->o_arg
.seqid
);
692 static void nfs4_open_release(void *calldata
)
694 struct nfs4_opendata
*data
= calldata
;
695 struct nfs4_state
*state
= NULL
;
697 /* If this request hasn't been cancelled, do nothing */
698 if (data
->cancelled
== 0)
700 /* In case of error, no cleanup! */
701 if (data
->rpc_status
!= 0)
703 /* In case we need an open_confirm, no cleanup! */
704 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
706 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
707 state
= nfs4_opendata_to_nfs4_state(data
);
709 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
711 nfs4_opendata_free(data
);
714 static const struct rpc_call_ops nfs4_open_ops
= {
715 .rpc_call_prepare
= nfs4_open_prepare
,
716 .rpc_call_done
= nfs4_open_done
,
717 .rpc_release
= nfs4_open_release
,
721 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
723 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
725 struct inode
*dir
= data
->dir
->d_inode
;
726 struct nfs_server
*server
= NFS_SERVER(dir
);
727 struct nfs_openargs
*o_arg
= &data
->o_arg
;
728 struct nfs_openres
*o_res
= &data
->o_res
;
729 struct rpc_task
*task
;
732 atomic_inc(&data
->count
);
734 * If rpc_run_task() ends up calling ->rpc_release(), we
735 * want to ensure that it takes the 'error' code path.
737 data
->rpc_status
= -ENOMEM
;
738 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_ops
, data
);
740 return PTR_ERR(task
);
741 status
= nfs4_wait_for_completion_rpc_task(task
);
746 status
= data
->rpc_status
;
751 if (o_arg
->open_flags
& O_CREAT
) {
752 update_changeattr(dir
, &o_res
->cinfo
);
753 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
755 nfs_refresh_inode(dir
, o_res
->dir_attr
);
756 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
757 status
= _nfs4_proc_open_confirm(data
);
761 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
762 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
763 return server
->nfs_client
->rpc_ops
->getattr(server
, &o_res
->fh
, o_res
->f_attr
);
767 static int _nfs4_do_access(struct inode
*inode
, struct rpc_cred
*cred
, int openflags
)
769 struct nfs_access_entry cache
;
773 if (openflags
& FMODE_READ
)
775 if (openflags
& FMODE_WRITE
)
777 status
= nfs_access_get_cached(inode
, cred
, &cache
);
781 /* Be clever: ask server to check for all possible rights */
782 cache
.mask
= MAY_EXEC
| MAY_WRITE
| MAY_READ
;
784 cache
.jiffies
= jiffies
;
785 status
= _nfs4_proc_access(inode
, &cache
);
788 nfs_access_add_cache(inode
, &cache
);
790 if ((cache
.mask
& mask
) == mask
)
795 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
797 struct nfs_client
*clp
= server
->nfs_client
;
801 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
804 if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
))
806 nfs4_schedule_state_recovery(clp
);
813 * reclaim state on the server after a network partition.
814 * Assumes caller holds the appropriate lock
816 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
818 struct inode
*inode
= state
->inode
;
819 struct nfs_delegation
*delegation
= NFS_I(inode
)->delegation
;
820 struct nfs4_opendata
*opendata
;
821 int openflags
= state
->state
& (FMODE_READ
|FMODE_WRITE
);
824 if (delegation
!= NULL
&& !(delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)) {
825 ret
= _nfs4_do_access(inode
, ctx
->cred
, openflags
);
828 memcpy(&state
->stateid
, &delegation
->stateid
, sizeof(state
->stateid
));
829 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
832 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, openflags
, NULL
);
833 if (opendata
== NULL
)
835 ret
= nfs4_open_recover(opendata
, state
);
836 if (ret
== -ESTALE
) {
837 /* Invalidate the state owner so we don't ever use it again */
838 nfs4_drop_state_owner(state
->owner
);
839 d_drop(ctx
->path
.dentry
);
841 nfs4_opendata_free(opendata
);
845 static inline int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
847 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
848 struct nfs4_exception exception
= { };
852 err
= _nfs4_open_expired(ctx
, state
);
853 if (err
== -NFS4ERR_DELAY
)
854 nfs4_handle_exception(server
, err
, &exception
);
855 } while (exception
.retry
);
859 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
861 struct nfs_open_context
*ctx
;
864 ctx
= nfs4_state_find_open_context(state
);
867 ret
= nfs4_do_open_expired(ctx
, state
);
868 put_nfs_open_context(ctx
);
873 * Returns a referenced nfs4_state if there is an open delegation on the file
875 static int _nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
877 struct nfs_delegation
*delegation
;
878 struct nfs_server
*server
= NFS_SERVER(inode
);
879 struct nfs_client
*clp
= server
->nfs_client
;
880 struct nfs_inode
*nfsi
= NFS_I(inode
);
881 struct nfs4_state_owner
*sp
= NULL
;
882 struct nfs4_state
*state
= NULL
;
883 int open_flags
= flags
& (FMODE_READ
|FMODE_WRITE
);
887 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
888 dprintk("%s: nfs4_get_state_owner failed!\n", __FUNCTION__
);
891 err
= nfs4_recover_expired_lease(server
);
893 goto out_put_state_owner
;
894 /* Protect against reboot recovery - NOTE ORDER! */
895 down_read(&clp
->cl_sem
);
896 /* Protect against delegation recall */
897 down_read(&nfsi
->rwsem
);
898 delegation
= NFS_I(inode
)->delegation
;
900 if (delegation
== NULL
|| (delegation
->type
& open_flags
) != open_flags
)
903 state
= nfs4_get_open_state(inode
, sp
);
908 if ((state
->state
& open_flags
) == open_flags
) {
909 spin_lock(&inode
->i_lock
);
910 update_open_stateflags(state
, open_flags
);
911 spin_unlock(&inode
->i_lock
);
913 } else if (state
->state
!= 0)
914 goto out_put_open_state
;
917 err
= _nfs4_do_access(inode
, cred
, open_flags
);
920 goto out_put_open_state
;
921 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
922 update_open_stateid(state
, &delegation
->stateid
, open_flags
);
924 nfs4_put_state_owner(sp
);
925 up_read(&nfsi
->rwsem
);
926 up_read(&clp
->cl_sem
);
930 nfs4_put_open_state(state
);
932 up_read(&nfsi
->rwsem
);
933 up_read(&clp
->cl_sem
);
935 nfs_inode_return_delegation(inode
);
937 nfs4_put_state_owner(sp
);
941 static struct nfs4_state
*nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
)
943 struct nfs4_exception exception
= { };
944 struct nfs4_state
*res
= ERR_PTR(-EIO
);
948 err
= _nfs4_open_delegated(inode
, flags
, cred
, &res
);
951 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(inode
),
953 } while (exception
.retry
);
958 * Returns a referenced nfs4_state
960 static int _nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
962 struct nfs4_state_owner
*sp
;
963 struct nfs4_state
*state
= NULL
;
964 struct nfs_server
*server
= NFS_SERVER(dir
);
965 struct nfs_client
*clp
= server
->nfs_client
;
966 struct nfs4_opendata
*opendata
;
969 /* Protect against reboot recovery conflicts */
971 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
972 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
975 status
= nfs4_recover_expired_lease(server
);
977 goto err_put_state_owner
;
978 down_read(&clp
->cl_sem
);
980 opendata
= nfs4_opendata_alloc(path
, sp
, flags
, sattr
);
981 if (opendata
== NULL
)
982 goto err_release_rwsem
;
984 status
= _nfs4_proc_open(opendata
);
986 goto err_opendata_free
;
989 state
= nfs4_opendata_to_nfs4_state(opendata
);
991 goto err_opendata_free
;
992 if (opendata
->o_res
.delegation_type
!= 0)
993 nfs_inode_set_delegation(state
->inode
, cred
, &opendata
->o_res
);
994 nfs4_opendata_free(opendata
);
995 nfs4_put_state_owner(sp
);
996 up_read(&clp
->cl_sem
);
1000 nfs4_opendata_free(opendata
);
1002 up_read(&clp
->cl_sem
);
1003 err_put_state_owner
:
1004 nfs4_put_state_owner(sp
);
1011 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1013 struct nfs4_exception exception
= { };
1014 struct nfs4_state
*res
;
1018 status
= _nfs4_do_open(dir
, path
, flags
, sattr
, cred
, &res
);
1021 /* NOTE: BAD_SEQID means the server and client disagree about the
1022 * book-keeping w.r.t. state-changing operations
1023 * (OPEN/CLOSE/LOCK/LOCKU...)
1024 * It is actually a sign of a bug on the client or on the server.
1026 * If we receive a BAD_SEQID error in the particular case of
1027 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1028 * have unhashed the old state_owner for us, and that we can
1029 * therefore safely retry using a new one. We should still warn
1030 * the user though...
1032 if (status
== -NFS4ERR_BAD_SEQID
) {
1033 printk(KERN_WARNING
"NFS: v4 server returned a bad sequence-id error!\n");
1034 exception
.retry
= 1;
1038 * BAD_STATEID on OPEN means that the server cancelled our
1039 * state before it received the OPEN_CONFIRM.
1040 * Recover by retrying the request as per the discussion
1041 * on Page 181 of RFC3530.
1043 if (status
== -NFS4ERR_BAD_STATEID
) {
1044 exception
.retry
= 1;
1047 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1048 status
, &exception
));
1049 } while (exception
.retry
);
1053 static int _nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1054 struct iattr
*sattr
, struct nfs4_state
*state
)
1056 struct nfs_server
*server
= NFS_SERVER(inode
);
1057 struct nfs_setattrargs arg
= {
1058 .fh
= NFS_FH(inode
),
1061 .bitmask
= server
->attr_bitmask
,
1063 struct nfs_setattrres res
= {
1067 struct rpc_message msg
= {
1068 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1072 unsigned long timestamp
= jiffies
;
1075 nfs_fattr_init(fattr
);
1077 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1078 /* Use that stateid */
1079 } else if (state
!= NULL
) {
1080 msg
.rpc_cred
= state
->owner
->so_cred
;
1081 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1083 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1085 status
= rpc_call_sync(server
->client
, &msg
, 0);
1086 if (status
== 0 && state
!= NULL
)
1087 renew_lease(server
, timestamp
);
1091 static int nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1092 struct iattr
*sattr
, struct nfs4_state
*state
)
1094 struct nfs_server
*server
= NFS_SERVER(inode
);
1095 struct nfs4_exception exception
= { };
1098 err
= nfs4_handle_exception(server
,
1099 _nfs4_do_setattr(inode
, fattr
, sattr
, state
),
1101 } while (exception
.retry
);
1105 struct nfs4_closedata
{
1107 struct inode
*inode
;
1108 struct nfs4_state
*state
;
1109 struct nfs_closeargs arg
;
1110 struct nfs_closeres res
;
1111 struct nfs_fattr fattr
;
1112 unsigned long timestamp
;
1115 static void nfs4_free_closedata(void *data
)
1117 struct nfs4_closedata
*calldata
= data
;
1118 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1120 nfs4_put_open_state(calldata
->state
);
1121 nfs_free_seqid(calldata
->arg
.seqid
);
1122 nfs4_put_state_owner(sp
);
1123 dput(calldata
->path
.dentry
);
1124 mntput(calldata
->path
.mnt
);
1128 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1130 struct nfs4_closedata
*calldata
= data
;
1131 struct nfs4_state
*state
= calldata
->state
;
1132 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1134 if (RPC_ASSASSINATED(task
))
1136 /* hmm. we are done with the inode, and in the process of freeing
1137 * the state_owner. we keep this around to process errors
1139 nfs_increment_open_seqid(task
->tk_status
, calldata
->arg
.seqid
);
1140 switch (task
->tk_status
) {
1142 memcpy(&state
->stateid
, &calldata
->res
.stateid
,
1143 sizeof(state
->stateid
));
1144 renew_lease(server
, calldata
->timestamp
);
1146 case -NFS4ERR_STALE_STATEID
:
1147 case -NFS4ERR_EXPIRED
:
1150 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
1151 rpc_restart_call(task
);
1155 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1158 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1160 struct nfs4_closedata
*calldata
= data
;
1161 struct nfs4_state
*state
= calldata
->state
;
1162 struct rpc_message msg
= {
1163 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1164 .rpc_argp
= &calldata
->arg
,
1165 .rpc_resp
= &calldata
->res
,
1166 .rpc_cred
= state
->owner
->so_cred
,
1168 int mode
= 0, old_mode
;
1170 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1172 /* Recalculate the new open mode in case someone reopened the file
1173 * while we were waiting in line to be scheduled.
1175 spin_lock(&state
->owner
->so_lock
);
1176 spin_lock(&calldata
->inode
->i_lock
);
1177 mode
= old_mode
= state
->state
;
1178 if (state
->n_rdwr
== 0) {
1179 if (state
->n_rdonly
== 0)
1180 mode
&= ~FMODE_READ
;
1181 if (state
->n_wronly
== 0)
1182 mode
&= ~FMODE_WRITE
;
1184 nfs4_state_set_mode_locked(state
, mode
);
1185 spin_unlock(&calldata
->inode
->i_lock
);
1186 spin_unlock(&state
->owner
->so_lock
);
1187 if (mode
== old_mode
|| test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
1188 /* Note: exit _without_ calling nfs4_close_done */
1189 task
->tk_action
= NULL
;
1192 nfs_fattr_init(calldata
->res
.fattr
);
1194 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1195 calldata
->arg
.open_flags
= mode
;
1196 calldata
->timestamp
= jiffies
;
1197 rpc_call_setup(task
, &msg
, 0);
1200 static const struct rpc_call_ops nfs4_close_ops
= {
1201 .rpc_call_prepare
= nfs4_close_prepare
,
1202 .rpc_call_done
= nfs4_close_done
,
1203 .rpc_release
= nfs4_free_closedata
,
1207 * It is possible for data to be read/written from a mem-mapped file
1208 * after the sys_close call (which hits the vfs layer as a flush).
1209 * This means that we can't safely call nfsv4 close on a file until
1210 * the inode is cleared. This in turn means that we are not good
1211 * NFSv4 citizens - we do not indicate to the server to update the file's
1212 * share state even when we are done with one of the three share
1213 * stateid's in the inode.
1215 * NOTE: Caller must be holding the sp->so_owner semaphore!
1217 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
)
1219 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1220 struct nfs4_closedata
*calldata
;
1221 int status
= -ENOMEM
;
1223 calldata
= kmalloc(sizeof(*calldata
), GFP_KERNEL
);
1224 if (calldata
== NULL
)
1226 calldata
->inode
= state
->inode
;
1227 calldata
->state
= state
;
1228 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1229 calldata
->arg
.stateid
= &state
->stateid
;
1230 /* Serialization for the sequence id */
1231 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1232 if (calldata
->arg
.seqid
== NULL
)
1233 goto out_free_calldata
;
1234 calldata
->arg
.bitmask
= server
->attr_bitmask
;
1235 calldata
->res
.fattr
= &calldata
->fattr
;
1236 calldata
->res
.server
= server
;
1237 calldata
->path
.mnt
= mntget(path
->mnt
);
1238 calldata
->path
.dentry
= dget(path
->dentry
);
1240 status
= nfs4_call_async(server
->client
, &nfs4_close_ops
, calldata
);
1244 nfs_free_seqid(calldata
->arg
.seqid
);
1251 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
)
1255 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1256 if (!IS_ERR(filp
)) {
1257 struct nfs_open_context
*ctx
;
1258 ctx
= (struct nfs_open_context
*)filp
->private_data
;
1262 nfs4_close_state(path
, state
, nd
->intent
.open
.flags
);
1263 return PTR_ERR(filp
);
1267 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1269 struct path path
= {
1274 struct rpc_cred
*cred
;
1275 struct nfs4_state
*state
;
1278 if (nd
->flags
& LOOKUP_CREATE
) {
1279 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1280 attr
.ia_valid
= ATTR_MODE
;
1281 if (!IS_POSIXACL(dir
))
1282 attr
.ia_mode
&= ~current
->fs
->umask
;
1285 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1288 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1290 return (struct dentry
*)cred
;
1291 state
= nfs4_do_open(dir
, &path
, nd
->intent
.open
.flags
, &attr
, cred
);
1293 if (IS_ERR(state
)) {
1294 if (PTR_ERR(state
) == -ENOENT
)
1295 d_add(dentry
, NULL
);
1296 return (struct dentry
*)state
;
1298 res
= d_add_unique(dentry
, igrab(state
->inode
));
1301 nfs4_intent_set_file(nd
, &path
, state
);
1306 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1308 struct path path
= {
1312 struct rpc_cred
*cred
;
1313 struct nfs4_state
*state
;
1315 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1317 return PTR_ERR(cred
);
1318 state
= nfs4_open_delegated(dentry
->d_inode
, openflags
, cred
);
1320 state
= nfs4_do_open(dir
, &path
, openflags
, NULL
, cred
);
1322 if (IS_ERR(state
)) {
1323 switch (PTR_ERR(state
)) {
1329 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1335 if (state
->inode
== dentry
->d_inode
) {
1336 nfs4_intent_set_file(nd
, &path
, state
);
1339 nfs4_close_state(&path
, state
, openflags
);
1346 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1348 struct nfs4_server_caps_res res
= {};
1349 struct rpc_message msg
= {
1350 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1351 .rpc_argp
= fhandle
,
1356 status
= rpc_call_sync(server
->client
, &msg
, 0);
1358 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
1359 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
1360 server
->caps
|= NFS_CAP_ACLS
;
1361 if (res
.has_links
!= 0)
1362 server
->caps
|= NFS_CAP_HARDLINKS
;
1363 if (res
.has_symlinks
!= 0)
1364 server
->caps
|= NFS_CAP_SYMLINKS
;
1365 server
->acl_bitmask
= res
.acl_bitmask
;
1370 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1372 struct nfs4_exception exception
= { };
1375 err
= nfs4_handle_exception(server
,
1376 _nfs4_server_capabilities(server
, fhandle
),
1378 } while (exception
.retry
);
1382 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1383 struct nfs_fsinfo
*info
)
1385 struct nfs4_lookup_root_arg args
= {
1386 .bitmask
= nfs4_fattr_bitmap
,
1388 struct nfs4_lookup_res res
= {
1390 .fattr
= info
->fattr
,
1393 struct rpc_message msg
= {
1394 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
1398 nfs_fattr_init(info
->fattr
);
1399 return rpc_call_sync(server
->client
, &msg
, 0);
1402 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1403 struct nfs_fsinfo
*info
)
1405 struct nfs4_exception exception
= { };
1408 err
= nfs4_handle_exception(server
,
1409 _nfs4_lookup_root(server
, fhandle
, info
),
1411 } while (exception
.retry
);
1416 * get the file handle for the "/" directory on the server
1418 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1419 struct nfs_fsinfo
*info
)
1423 status
= nfs4_lookup_root(server
, fhandle
, info
);
1425 status
= nfs4_server_capabilities(server
, fhandle
);
1427 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
1428 return nfs4_map_errors(status
);
1432 * Get locations and (maybe) other attributes of a referral.
1433 * Note that we'll actually follow the referral later when
1434 * we detect fsid mismatch in inode revalidation
1436 static int nfs4_get_referral(struct inode
*dir
, struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
1438 int status
= -ENOMEM
;
1439 struct page
*page
= NULL
;
1440 struct nfs4_fs_locations
*locations
= NULL
;
1442 page
= alloc_page(GFP_KERNEL
);
1445 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
1446 if (locations
== NULL
)
1449 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
1452 /* Make sure server returned a different fsid for the referral */
1453 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
1454 dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__
, name
->name
);
1459 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
1460 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
1462 fattr
->mode
= S_IFDIR
;
1463 memset(fhandle
, 0, sizeof(struct nfs_fh
));
1472 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1474 struct nfs4_getattr_arg args
= {
1476 .bitmask
= server
->attr_bitmask
,
1478 struct nfs4_getattr_res res
= {
1482 struct rpc_message msg
= {
1483 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
1488 nfs_fattr_init(fattr
);
1489 return rpc_call_sync(server
->client
, &msg
, 0);
1492 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1494 struct nfs4_exception exception
= { };
1497 err
= nfs4_handle_exception(server
,
1498 _nfs4_proc_getattr(server
, fhandle
, fattr
),
1500 } while (exception
.retry
);
1505 * The file is not closed if it is opened due to the a request to change
1506 * the size of the file. The open call will not be needed once the
1507 * VFS layer lookup-intents are implemented.
1509 * Close is called when the inode is destroyed.
1510 * If we haven't opened the file for O_WRONLY, we
1511 * need to in the size_change case to obtain a stateid.
1514 * Because OPEN is always done by name in nfsv4, it is
1515 * possible that we opened a different file by the same
1516 * name. We can recognize this race condition, but we
1517 * can't do anything about it besides returning an error.
1519 * This will be fixed with VFS changes (lookup-intent).
1522 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
1523 struct iattr
*sattr
)
1525 struct rpc_cred
*cred
;
1526 struct inode
*inode
= dentry
->d_inode
;
1527 struct nfs_open_context
*ctx
;
1528 struct nfs4_state
*state
= NULL
;
1531 nfs_fattr_init(fattr
);
1533 cred
= rpcauth_lookupcred(NFS_CLIENT(inode
)->cl_auth
, 0);
1535 return PTR_ERR(cred
);
1537 /* Search for an existing open(O_WRITE) file */
1538 ctx
= nfs_find_open_context(inode
, cred
, FMODE_WRITE
);
1542 status
= nfs4_do_setattr(inode
, fattr
, sattr
, state
);
1544 nfs_setattr_update_inode(inode
, sattr
);
1546 put_nfs_open_context(ctx
);
1551 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1552 struct qstr
*name
, struct nfs_fh
*fhandle
,
1553 struct nfs_fattr
*fattr
)
1556 struct nfs4_lookup_arg args
= {
1557 .bitmask
= server
->attr_bitmask
,
1561 struct nfs4_lookup_res res
= {
1566 struct rpc_message msg
= {
1567 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1572 nfs_fattr_init(fattr
);
1574 dprintk("NFS call lookupfh %s\n", name
->name
);
1575 status
= rpc_call_sync(server
->client
, &msg
, 0);
1576 dprintk("NFS reply lookupfh: %d\n", status
);
1577 if (status
== -NFS4ERR_MOVED
)
1582 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1583 struct qstr
*name
, struct nfs_fh
*fhandle
,
1584 struct nfs_fattr
*fattr
)
1586 struct nfs4_exception exception
= { };
1589 err
= nfs4_handle_exception(server
,
1590 _nfs4_proc_lookupfh(server
, dirfh
, name
,
1593 } while (exception
.retry
);
1597 static int _nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
1598 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1601 struct nfs_server
*server
= NFS_SERVER(dir
);
1602 struct nfs4_lookup_arg args
= {
1603 .bitmask
= server
->attr_bitmask
,
1604 .dir_fh
= NFS_FH(dir
),
1607 struct nfs4_lookup_res res
= {
1612 struct rpc_message msg
= {
1613 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1618 nfs_fattr_init(fattr
);
1620 dprintk("NFS call lookup %s\n", name
->name
);
1621 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
1622 if (status
== -NFS4ERR_MOVED
)
1623 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
1624 dprintk("NFS reply lookup: %d\n", status
);
1628 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1630 struct nfs4_exception exception
= { };
1633 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1634 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
1636 } while (exception
.retry
);
1640 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1642 struct nfs4_accessargs args
= {
1643 .fh
= NFS_FH(inode
),
1645 struct nfs4_accessres res
= { 0 };
1646 struct rpc_message msg
= {
1647 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
1650 .rpc_cred
= entry
->cred
,
1652 int mode
= entry
->mask
;
1656 * Determine which access bits we want to ask for...
1658 if (mode
& MAY_READ
)
1659 args
.access
|= NFS4_ACCESS_READ
;
1660 if (S_ISDIR(inode
->i_mode
)) {
1661 if (mode
& MAY_WRITE
)
1662 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
1663 if (mode
& MAY_EXEC
)
1664 args
.access
|= NFS4_ACCESS_LOOKUP
;
1666 if (mode
& MAY_WRITE
)
1667 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
1668 if (mode
& MAY_EXEC
)
1669 args
.access
|= NFS4_ACCESS_EXECUTE
;
1671 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1674 if (res
.access
& NFS4_ACCESS_READ
)
1675 entry
->mask
|= MAY_READ
;
1676 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
1677 entry
->mask
|= MAY_WRITE
;
1678 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
1679 entry
->mask
|= MAY_EXEC
;
1684 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1686 struct nfs4_exception exception
= { };
1689 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1690 _nfs4_proc_access(inode
, entry
),
1692 } while (exception
.retry
);
1697 * TODO: For the time being, we don't try to get any attributes
1698 * along with any of the zero-copy operations READ, READDIR,
1701 * In the case of the first three, we want to put the GETATTR
1702 * after the read-type operation -- this is because it is hard
1703 * to predict the length of a GETATTR response in v4, and thus
1704 * align the READ data correctly. This means that the GETATTR
1705 * may end up partially falling into the page cache, and we should
1706 * shift it into the 'tail' of the xdr_buf before processing.
1707 * To do this efficiently, we need to know the total length
1708 * of data received, which doesn't seem to be available outside
1711 * In the case of WRITE, we also want to put the GETATTR after
1712 * the operation -- in this case because we want to make sure
1713 * we get the post-operation mtime and size. This means that
1714 * we can't use xdr_encode_pages() as written: we need a variant
1715 * of it which would leave room in the 'tail' iovec.
1717 * Both of these changes to the XDR layer would in fact be quite
1718 * minor, but I decided to leave them for a subsequent patch.
1720 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1721 unsigned int pgbase
, unsigned int pglen
)
1723 struct nfs4_readlink args
= {
1724 .fh
= NFS_FH(inode
),
1729 struct rpc_message msg
= {
1730 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
1735 return rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1738 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1739 unsigned int pgbase
, unsigned int pglen
)
1741 struct nfs4_exception exception
= { };
1744 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1745 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
1747 } while (exception
.retry
);
1753 * We will need to arrange for the VFS layer to provide an atomic open.
1754 * Until then, this create/open method is prone to inefficiency and race
1755 * conditions due to the lookup, create, and open VFS calls from sys_open()
1756 * placed on the wire.
1758 * Given the above sorry state of affairs, I'm simply sending an OPEN.
1759 * The file will be opened again in the subsequent VFS open call
1760 * (nfs4_proc_file_open).
1762 * The open for read will just hang around to be used by any process that
1763 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
1767 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
1768 int flags
, struct nameidata
*nd
)
1770 struct path path
= {
1774 struct nfs4_state
*state
;
1775 struct rpc_cred
*cred
;
1778 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1780 status
= PTR_ERR(cred
);
1783 state
= nfs4_do_open(dir
, &path
, flags
, sattr
, cred
);
1785 if (IS_ERR(state
)) {
1786 status
= PTR_ERR(state
);
1789 d_instantiate(dentry
, igrab(state
->inode
));
1790 if (flags
& O_EXCL
) {
1791 struct nfs_fattr fattr
;
1792 status
= nfs4_do_setattr(state
->inode
, &fattr
, sattr
, state
);
1794 nfs_setattr_update_inode(state
->inode
, sattr
);
1796 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
1797 status
= nfs4_intent_set_file(nd
, &path
, state
);
1799 nfs4_close_state(&path
, state
, flags
);
1804 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1806 struct nfs_server
*server
= NFS_SERVER(dir
);
1807 struct nfs4_remove_arg args
= {
1810 .bitmask
= server
->attr_bitmask
,
1812 struct nfs_fattr dir_attr
;
1813 struct nfs4_remove_res res
= {
1815 .dir_attr
= &dir_attr
,
1817 struct rpc_message msg
= {
1818 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
1824 nfs_fattr_init(res
.dir_attr
);
1825 status
= rpc_call_sync(server
->client
, &msg
, 0);
1827 update_changeattr(dir
, &res
.cinfo
);
1828 nfs_post_op_update_inode(dir
, res
.dir_attr
);
1833 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1835 struct nfs4_exception exception
= { };
1838 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1839 _nfs4_proc_remove(dir
, name
),
1841 } while (exception
.retry
);
1845 struct unlink_desc
{
1846 struct nfs4_remove_arg args
;
1847 struct nfs4_remove_res res
;
1848 struct nfs_fattr dir_attr
;
1851 static int nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct dentry
*dir
,
1854 struct nfs_server
*server
= NFS_SERVER(dir
->d_inode
);
1855 struct unlink_desc
*up
;
1857 up
= kmalloc(sizeof(*up
), GFP_KERNEL
);
1861 up
->args
.fh
= NFS_FH(dir
->d_inode
);
1862 up
->args
.name
= name
;
1863 up
->args
.bitmask
= server
->attr_bitmask
;
1864 up
->res
.server
= server
;
1865 up
->res
.dir_attr
= &up
->dir_attr
;
1867 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
1868 msg
->rpc_argp
= &up
->args
;
1869 msg
->rpc_resp
= &up
->res
;
1873 static int nfs4_proc_unlink_done(struct dentry
*dir
, struct rpc_task
*task
)
1875 struct rpc_message
*msg
= &task
->tk_msg
;
1876 struct unlink_desc
*up
;
1878 if (msg
->rpc_resp
!= NULL
) {
1879 up
= container_of(msg
->rpc_resp
, struct unlink_desc
, res
);
1880 update_changeattr(dir
->d_inode
, &up
->res
.cinfo
);
1881 nfs_post_op_update_inode(dir
->d_inode
, up
->res
.dir_attr
);
1883 msg
->rpc_resp
= NULL
;
1884 msg
->rpc_argp
= NULL
;
1889 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1890 struct inode
*new_dir
, struct qstr
*new_name
)
1892 struct nfs_server
*server
= NFS_SERVER(old_dir
);
1893 struct nfs4_rename_arg arg
= {
1894 .old_dir
= NFS_FH(old_dir
),
1895 .new_dir
= NFS_FH(new_dir
),
1896 .old_name
= old_name
,
1897 .new_name
= new_name
,
1898 .bitmask
= server
->attr_bitmask
,
1900 struct nfs_fattr old_fattr
, new_fattr
;
1901 struct nfs4_rename_res res
= {
1903 .old_fattr
= &old_fattr
,
1904 .new_fattr
= &new_fattr
,
1906 struct rpc_message msg
= {
1907 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
1913 nfs_fattr_init(res
.old_fattr
);
1914 nfs_fattr_init(res
.new_fattr
);
1915 status
= rpc_call_sync(server
->client
, &msg
, 0);
1918 update_changeattr(old_dir
, &res
.old_cinfo
);
1919 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
1920 update_changeattr(new_dir
, &res
.new_cinfo
);
1921 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
1926 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1927 struct inode
*new_dir
, struct qstr
*new_name
)
1929 struct nfs4_exception exception
= { };
1932 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
1933 _nfs4_proc_rename(old_dir
, old_name
,
1936 } while (exception
.retry
);
1940 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
1942 struct nfs_server
*server
= NFS_SERVER(inode
);
1943 struct nfs4_link_arg arg
= {
1944 .fh
= NFS_FH(inode
),
1945 .dir_fh
= NFS_FH(dir
),
1947 .bitmask
= server
->attr_bitmask
,
1949 struct nfs_fattr fattr
, dir_attr
;
1950 struct nfs4_link_res res
= {
1953 .dir_attr
= &dir_attr
,
1955 struct rpc_message msg
= {
1956 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
1962 nfs_fattr_init(res
.fattr
);
1963 nfs_fattr_init(res
.dir_attr
);
1964 status
= rpc_call_sync(server
->client
, &msg
, 0);
1966 update_changeattr(dir
, &res
.cinfo
);
1967 nfs_post_op_update_inode(dir
, res
.dir_attr
);
1968 nfs_post_op_update_inode(inode
, res
.fattr
);
1974 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
1976 struct nfs4_exception exception
= { };
1979 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1980 _nfs4_proc_link(inode
, dir
, name
),
1982 } while (exception
.retry
);
1986 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
1987 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
1989 struct nfs_server
*server
= NFS_SERVER(dir
);
1990 struct nfs_fh fhandle
;
1991 struct nfs_fattr fattr
, dir_fattr
;
1992 struct nfs4_create_arg arg
= {
1993 .dir_fh
= NFS_FH(dir
),
1995 .name
= &dentry
->d_name
,
1998 .bitmask
= server
->attr_bitmask
,
2000 struct nfs4_create_res res
= {
2004 .dir_fattr
= &dir_fattr
,
2006 struct rpc_message msg
= {
2007 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
],
2013 if (len
> NFS4_MAXPATHLEN
)
2014 return -ENAMETOOLONG
;
2016 arg
.u
.symlink
.pages
= &page
;
2017 arg
.u
.symlink
.len
= len
;
2018 nfs_fattr_init(&fattr
);
2019 nfs_fattr_init(&dir_fattr
);
2021 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2023 update_changeattr(dir
, &res
.dir_cinfo
);
2024 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2025 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2030 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2031 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2033 struct nfs4_exception exception
= { };
2036 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2037 _nfs4_proc_symlink(dir
, dentry
, page
,
2040 } while (exception
.retry
);
2044 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2045 struct iattr
*sattr
)
2047 struct nfs_server
*server
= NFS_SERVER(dir
);
2048 struct nfs_fh fhandle
;
2049 struct nfs_fattr fattr
, dir_fattr
;
2050 struct nfs4_create_arg arg
= {
2051 .dir_fh
= NFS_FH(dir
),
2053 .name
= &dentry
->d_name
,
2056 .bitmask
= server
->attr_bitmask
,
2058 struct nfs4_create_res res
= {
2062 .dir_fattr
= &dir_fattr
,
2064 struct rpc_message msg
= {
2065 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2071 nfs_fattr_init(&fattr
);
2072 nfs_fattr_init(&dir_fattr
);
2074 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2076 update_changeattr(dir
, &res
.dir_cinfo
);
2077 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2078 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2083 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2084 struct iattr
*sattr
)
2086 struct nfs4_exception exception
= { };
2089 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2090 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2092 } while (exception
.retry
);
2096 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2097 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2099 struct inode
*dir
= dentry
->d_inode
;
2100 struct nfs4_readdir_arg args
= {
2105 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2107 struct nfs4_readdir_res res
;
2108 struct rpc_message msg
= {
2109 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2116 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__
,
2117 dentry
->d_parent
->d_name
.name
,
2118 dentry
->d_name
.name
,
2119 (unsigned long long)cookie
);
2120 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2121 res
.pgbase
= args
.pgbase
;
2122 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2124 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2125 dprintk("%s: returns %d\n", __FUNCTION__
, status
);
2129 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2130 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2132 struct nfs4_exception exception
= { };
2135 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2136 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2139 } while (exception
.retry
);
2143 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2144 struct iattr
*sattr
, dev_t rdev
)
2146 struct nfs_server
*server
= NFS_SERVER(dir
);
2148 struct nfs_fattr fattr
, dir_fattr
;
2149 struct nfs4_create_arg arg
= {
2150 .dir_fh
= NFS_FH(dir
),
2152 .name
= &dentry
->d_name
,
2154 .bitmask
= server
->attr_bitmask
,
2156 struct nfs4_create_res res
= {
2160 .dir_fattr
= &dir_fattr
,
2162 struct rpc_message msg
= {
2163 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2168 int mode
= sattr
->ia_mode
;
2170 nfs_fattr_init(&fattr
);
2171 nfs_fattr_init(&dir_fattr
);
2173 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2174 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2176 arg
.ftype
= NF4FIFO
;
2177 else if (S_ISBLK(mode
)) {
2179 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2180 arg
.u
.device
.specdata2
= MINOR(rdev
);
2182 else if (S_ISCHR(mode
)) {
2184 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2185 arg
.u
.device
.specdata2
= MINOR(rdev
);
2188 arg
.ftype
= NF4SOCK
;
2190 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2192 update_changeattr(dir
, &res
.dir_cinfo
);
2193 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2194 status
= nfs_instantiate(dentry
, &fh
, &fattr
);
2199 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2200 struct iattr
*sattr
, dev_t rdev
)
2202 struct nfs4_exception exception
= { };
2205 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2206 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2208 } while (exception
.retry
);
2212 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2213 struct nfs_fsstat
*fsstat
)
2215 struct nfs4_statfs_arg args
= {
2217 .bitmask
= server
->attr_bitmask
,
2219 struct rpc_message msg
= {
2220 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2225 nfs_fattr_init(fsstat
->fattr
);
2226 return rpc_call_sync(server
->client
, &msg
, 0);
2229 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2231 struct nfs4_exception exception
= { };
2234 err
= nfs4_handle_exception(server
,
2235 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2237 } while (exception
.retry
);
2241 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2242 struct nfs_fsinfo
*fsinfo
)
2244 struct nfs4_fsinfo_arg args
= {
2246 .bitmask
= server
->attr_bitmask
,
2248 struct rpc_message msg
= {
2249 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2254 return rpc_call_sync(server
->client
, &msg
, 0);
2257 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2259 struct nfs4_exception exception
= { };
2263 err
= nfs4_handle_exception(server
,
2264 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2266 } while (exception
.retry
);
2270 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2272 nfs_fattr_init(fsinfo
->fattr
);
2273 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2276 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2277 struct nfs_pathconf
*pathconf
)
2279 struct nfs4_pathconf_arg args
= {
2281 .bitmask
= server
->attr_bitmask
,
2283 struct rpc_message msg
= {
2284 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2286 .rpc_resp
= pathconf
,
2289 /* None of the pathconf attributes are mandatory to implement */
2290 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2291 memset(pathconf
, 0, sizeof(*pathconf
));
2295 nfs_fattr_init(pathconf
->fattr
);
2296 return rpc_call_sync(server
->client
, &msg
, 0);
2299 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2300 struct nfs_pathconf
*pathconf
)
2302 struct nfs4_exception exception
= { };
2306 err
= nfs4_handle_exception(server
,
2307 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2309 } while (exception
.retry
);
2313 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2315 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2317 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
2318 rpc_restart_call(task
);
2321 if (task
->tk_status
> 0)
2322 renew_lease(server
, data
->timestamp
);
2326 static void nfs4_proc_read_setup(struct nfs_read_data
*data
)
2328 struct rpc_message msg
= {
2329 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
],
2330 .rpc_argp
= &data
->args
,
2331 .rpc_resp
= &data
->res
,
2332 .rpc_cred
= data
->cred
,
2335 data
->timestamp
= jiffies
;
2337 rpc_call_setup(&data
->task
, &msg
, 0);
2340 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2342 struct inode
*inode
= data
->inode
;
2344 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2345 rpc_restart_call(task
);
2348 if (task
->tk_status
>= 0) {
2349 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2350 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2355 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, int how
)
2357 struct rpc_message msg
= {
2358 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
],
2359 .rpc_argp
= &data
->args
,
2360 .rpc_resp
= &data
->res
,
2361 .rpc_cred
= data
->cred
,
2363 struct inode
*inode
= data
->inode
;
2364 struct nfs_server
*server
= NFS_SERVER(inode
);
2367 if (how
& FLUSH_STABLE
) {
2368 if (!NFS_I(inode
)->ncommit
)
2369 stable
= NFS_FILE_SYNC
;
2371 stable
= NFS_DATA_SYNC
;
2373 stable
= NFS_UNSTABLE
;
2374 data
->args
.stable
= stable
;
2375 data
->args
.bitmask
= server
->attr_bitmask
;
2376 data
->res
.server
= server
;
2378 data
->timestamp
= jiffies
;
2380 /* Finalize the task. */
2381 rpc_call_setup(&data
->task
, &msg
, 0);
2384 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2386 struct inode
*inode
= data
->inode
;
2388 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2389 rpc_restart_call(task
);
2392 if (task
->tk_status
>= 0)
2393 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2397 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, int how
)
2399 struct rpc_message msg
= {
2400 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
],
2401 .rpc_argp
= &data
->args
,
2402 .rpc_resp
= &data
->res
,
2403 .rpc_cred
= data
->cred
,
2405 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2407 data
->args
.bitmask
= server
->attr_bitmask
;
2408 data
->res
.server
= server
;
2410 rpc_call_setup(&data
->task
, &msg
, 0);
2414 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
2415 * standalone procedure for queueing an asynchronous RENEW.
2417 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
2419 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
2420 unsigned long timestamp
= (unsigned long)data
;
2422 if (task
->tk_status
< 0) {
2423 switch (task
->tk_status
) {
2424 case -NFS4ERR_STALE_CLIENTID
:
2425 case -NFS4ERR_EXPIRED
:
2426 case -NFS4ERR_CB_PATH_DOWN
:
2427 nfs4_schedule_state_recovery(clp
);
2431 spin_lock(&clp
->cl_lock
);
2432 if (time_before(clp
->cl_last_renewal
,timestamp
))
2433 clp
->cl_last_renewal
= timestamp
;
2434 spin_unlock(&clp
->cl_lock
);
2437 static const struct rpc_call_ops nfs4_renew_ops
= {
2438 .rpc_call_done
= nfs4_renew_done
,
2441 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2443 struct rpc_message msg
= {
2444 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2449 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
2450 &nfs4_renew_ops
, (void *)jiffies
);
2453 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2455 struct rpc_message msg
= {
2456 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2460 unsigned long now
= jiffies
;
2463 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2466 spin_lock(&clp
->cl_lock
);
2467 if (time_before(clp
->cl_last_renewal
,now
))
2468 clp
->cl_last_renewal
= now
;
2469 spin_unlock(&clp
->cl_lock
);
2473 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
2475 return (server
->caps
& NFS_CAP_ACLS
)
2476 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2477 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
2480 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
2481 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
2484 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
2486 static void buf_to_pages(const void *buf
, size_t buflen
,
2487 struct page
**pages
, unsigned int *pgbase
)
2489 const void *p
= buf
;
2491 *pgbase
= offset_in_page(buf
);
2493 while (p
< buf
+ buflen
) {
2494 *(pages
++) = virt_to_page(p
);
2495 p
+= PAGE_CACHE_SIZE
;
2499 struct nfs4_cached_acl
{
2505 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
2507 struct nfs_inode
*nfsi
= NFS_I(inode
);
2509 spin_lock(&inode
->i_lock
);
2510 kfree(nfsi
->nfs4_acl
);
2511 nfsi
->nfs4_acl
= acl
;
2512 spin_unlock(&inode
->i_lock
);
2515 static void nfs4_zap_acl_attr(struct inode
*inode
)
2517 nfs4_set_cached_acl(inode
, NULL
);
2520 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
2522 struct nfs_inode
*nfsi
= NFS_I(inode
);
2523 struct nfs4_cached_acl
*acl
;
2526 spin_lock(&inode
->i_lock
);
2527 acl
= nfsi
->nfs4_acl
;
2530 if (buf
== NULL
) /* user is just asking for length */
2532 if (acl
->cached
== 0)
2534 ret
= -ERANGE
; /* see getxattr(2) man page */
2535 if (acl
->len
> buflen
)
2537 memcpy(buf
, acl
->data
, acl
->len
);
2541 spin_unlock(&inode
->i_lock
);
2545 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
2547 struct nfs4_cached_acl
*acl
;
2549 if (buf
&& acl_len
<= PAGE_SIZE
) {
2550 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
2554 memcpy(acl
->data
, buf
, acl_len
);
2556 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
2563 nfs4_set_cached_acl(inode
, acl
);
2566 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2568 struct page
*pages
[NFS4ACL_MAXPAGES
];
2569 struct nfs_getaclargs args
= {
2570 .fh
= NFS_FH(inode
),
2574 size_t resp_len
= buflen
;
2576 struct rpc_message msg
= {
2577 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
2579 .rpc_resp
= &resp_len
,
2581 struct page
*localpage
= NULL
;
2584 if (buflen
< PAGE_SIZE
) {
2585 /* As long as we're doing a round trip to the server anyway,
2586 * let's be prepared for a page of acl data. */
2587 localpage
= alloc_page(GFP_KERNEL
);
2588 resp_buf
= page_address(localpage
);
2589 if (localpage
== NULL
)
2591 args
.acl_pages
[0] = localpage
;
2592 args
.acl_pgbase
= 0;
2593 resp_len
= args
.acl_len
= PAGE_SIZE
;
2596 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
2598 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2601 if (resp_len
> args
.acl_len
)
2602 nfs4_write_cached_acl(inode
, NULL
, resp_len
);
2604 nfs4_write_cached_acl(inode
, resp_buf
, resp_len
);
2607 if (resp_len
> buflen
)
2610 memcpy(buf
, resp_buf
, resp_len
);
2615 __free_page(localpage
);
2619 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2621 struct nfs4_exception exception
= { };
2624 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
2627 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
2628 } while (exception
.retry
);
2632 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
2634 struct nfs_server
*server
= NFS_SERVER(inode
);
2637 if (!nfs4_server_supports_acls(server
))
2639 ret
= nfs_revalidate_inode(server
, inode
);
2642 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
2645 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
2648 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2650 struct nfs_server
*server
= NFS_SERVER(inode
);
2651 struct page
*pages
[NFS4ACL_MAXPAGES
];
2652 struct nfs_setaclargs arg
= {
2653 .fh
= NFS_FH(inode
),
2657 struct rpc_message msg
= {
2658 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
2664 if (!nfs4_server_supports_acls(server
))
2666 nfs_inode_return_delegation(inode
);
2667 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
2668 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2669 nfs_zap_caches(inode
);
2673 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2675 struct nfs4_exception exception
= { };
2678 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2679 __nfs4_proc_set_acl(inode
, buf
, buflen
),
2681 } while (exception
.retry
);
2686 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
)
2688 struct nfs_client
*clp
= server
->nfs_client
;
2690 if (!clp
|| task
->tk_status
>= 0)
2692 switch(task
->tk_status
) {
2693 case -NFS4ERR_STALE_CLIENTID
:
2694 case -NFS4ERR_STALE_STATEID
:
2695 case -NFS4ERR_EXPIRED
:
2696 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
, NULL
);
2697 nfs4_schedule_state_recovery(clp
);
2698 if (test_bit(NFS4CLNT_STATE_RECOVER
, &clp
->cl_state
) == 0)
2699 rpc_wake_up_task(task
);
2700 task
->tk_status
= 0;
2702 case -NFS4ERR_DELAY
:
2703 nfs_inc_server_stats((struct nfs_server
*) server
,
2705 case -NFS4ERR_GRACE
:
2706 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
2707 task
->tk_status
= 0;
2709 case -NFS4ERR_OLD_STATEID
:
2710 task
->tk_status
= 0;
2713 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
2717 static int nfs4_wait_bit_interruptible(void *word
)
2719 if (signal_pending(current
))
2720 return -ERESTARTSYS
;
2725 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
)
2732 rwsem_acquire(&clp
->cl_sem
.dep_map
, 0, 0, _RET_IP_
);
2734 rpc_clnt_sigmask(clnt
, &oldset
);
2735 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_STATE_RECOVER
,
2736 nfs4_wait_bit_interruptible
,
2737 TASK_INTERRUPTIBLE
);
2738 rpc_clnt_sigunmask(clnt
, &oldset
);
2740 rwsem_release(&clp
->cl_sem
.dep_map
, 1, _RET_IP_
);
2744 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
2752 *timeout
= NFS4_POLL_RETRY_MIN
;
2753 if (*timeout
> NFS4_POLL_RETRY_MAX
)
2754 *timeout
= NFS4_POLL_RETRY_MAX
;
2755 rpc_clnt_sigmask(clnt
, &oldset
);
2756 if (clnt
->cl_intr
) {
2757 schedule_timeout_interruptible(*timeout
);
2761 schedule_timeout_uninterruptible(*timeout
);
2762 rpc_clnt_sigunmask(clnt
, &oldset
);
2767 /* This is the error handling routine for processes that are allowed
2770 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
2772 struct nfs_client
*clp
= server
->nfs_client
;
2773 int ret
= errorcode
;
2775 exception
->retry
= 0;
2779 case -NFS4ERR_STALE_CLIENTID
:
2780 case -NFS4ERR_STALE_STATEID
:
2781 case -NFS4ERR_EXPIRED
:
2782 nfs4_schedule_state_recovery(clp
);
2783 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
2785 exception
->retry
= 1;
2787 case -NFS4ERR_FILE_OPEN
:
2788 case -NFS4ERR_GRACE
:
2789 case -NFS4ERR_DELAY
:
2790 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
2793 case -NFS4ERR_OLD_STATEID
:
2794 exception
->retry
= 1;
2796 /* We failed to handle the error */
2797 return nfs4_map_errors(ret
);
2800 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
2802 nfs4_verifier sc_verifier
;
2803 struct nfs4_setclientid setclientid
= {
2804 .sc_verifier
= &sc_verifier
,
2807 struct rpc_message msg
= {
2808 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
2809 .rpc_argp
= &setclientid
,
2817 p
= (__be32
*)sc_verifier
.data
;
2818 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
2819 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
2822 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
2823 sizeof(setclientid
.sc_name
), "%s/%u.%u.%u.%u %s %u",
2824 clp
->cl_ipaddr
, NIPQUAD(clp
->cl_addr
.sin_addr
),
2825 cred
->cr_ops
->cr_name
,
2826 clp
->cl_id_uniquifier
);
2827 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
2828 sizeof(setclientid
.sc_netid
), "tcp");
2829 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
2830 sizeof(setclientid
.sc_uaddr
), "%s.%d.%d",
2831 clp
->cl_ipaddr
, port
>> 8, port
& 255);
2833 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2834 if (status
!= -NFS4ERR_CLID_INUSE
)
2839 ssleep(clp
->cl_lease_time
+ 1);
2841 if (++clp
->cl_id_uniquifier
== 0)
2847 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2849 struct nfs_fsinfo fsinfo
;
2850 struct rpc_message msg
= {
2851 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
2853 .rpc_resp
= &fsinfo
,
2860 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2862 spin_lock(&clp
->cl_lock
);
2863 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
2864 clp
->cl_last_renewal
= now
;
2865 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
2866 spin_unlock(&clp
->cl_lock
);
2871 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2876 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
2880 case -NFS4ERR_RESOURCE
:
2881 /* The IBM lawyers misread another document! */
2882 case -NFS4ERR_DELAY
:
2883 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
2889 struct nfs4_delegreturndata
{
2890 struct nfs4_delegreturnargs args
;
2891 struct nfs4_delegreturnres res
;
2893 nfs4_stateid stateid
;
2894 struct rpc_cred
*cred
;
2895 unsigned long timestamp
;
2896 struct nfs_fattr fattr
;
2900 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *calldata
)
2902 struct nfs4_delegreturndata
*data
= calldata
;
2903 struct rpc_message msg
= {
2904 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
2905 .rpc_argp
= &data
->args
,
2906 .rpc_resp
= &data
->res
,
2907 .rpc_cred
= data
->cred
,
2909 nfs_fattr_init(data
->res
.fattr
);
2910 rpc_call_setup(task
, &msg
, 0);
2913 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
2915 struct nfs4_delegreturndata
*data
= calldata
;
2916 data
->rpc_status
= task
->tk_status
;
2917 if (data
->rpc_status
== 0)
2918 renew_lease(data
->res
.server
, data
->timestamp
);
2921 static void nfs4_delegreturn_release(void *calldata
)
2923 struct nfs4_delegreturndata
*data
= calldata
;
2925 put_rpccred(data
->cred
);
2929 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
2930 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
2931 .rpc_call_done
= nfs4_delegreturn_done
,
2932 .rpc_release
= nfs4_delegreturn_release
,
2935 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2937 struct nfs4_delegreturndata
*data
;
2938 struct nfs_server
*server
= NFS_SERVER(inode
);
2939 struct rpc_task
*task
;
2942 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
2945 data
->args
.fhandle
= &data
->fh
;
2946 data
->args
.stateid
= &data
->stateid
;
2947 data
->args
.bitmask
= server
->attr_bitmask
;
2948 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
2949 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
2950 data
->res
.fattr
= &data
->fattr
;
2951 data
->res
.server
= server
;
2952 data
->cred
= get_rpccred(cred
);
2953 data
->timestamp
= jiffies
;
2954 data
->rpc_status
= 0;
2956 task
= rpc_run_task(NFS_CLIENT(inode
), RPC_TASK_ASYNC
, &nfs4_delegreturn_ops
, data
);
2958 return PTR_ERR(task
);
2959 status
= nfs4_wait_for_completion_rpc_task(task
);
2961 status
= data
->rpc_status
;
2963 nfs_post_op_update_inode(inode
, &data
->fattr
);
2969 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2971 struct nfs_server
*server
= NFS_SERVER(inode
);
2972 struct nfs4_exception exception
= { };
2975 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
);
2977 case -NFS4ERR_STALE_STATEID
:
2978 case -NFS4ERR_EXPIRED
:
2982 err
= nfs4_handle_exception(server
, err
, &exception
);
2983 } while (exception
.retry
);
2987 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
2988 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
2991 * sleep, with exponential backoff, and retry the LOCK operation.
2993 static unsigned long
2994 nfs4_set_lock_task_retry(unsigned long timeout
)
2996 schedule_timeout_interruptible(timeout
);
2998 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
2999 return NFS4_LOCK_MAXTIMEOUT
;
3003 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3005 struct inode
*inode
= state
->inode
;
3006 struct nfs_server
*server
= NFS_SERVER(inode
);
3007 struct nfs_client
*clp
= server
->nfs_client
;
3008 struct nfs_lockt_args arg
= {
3009 .fh
= NFS_FH(inode
),
3012 struct nfs_lockt_res res
= {
3015 struct rpc_message msg
= {
3016 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3019 .rpc_cred
= state
->owner
->so_cred
,
3021 struct nfs4_lock_state
*lsp
;
3024 down_read(&clp
->cl_sem
);
3025 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3026 status
= nfs4_set_lock_state(state
, request
);
3029 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3030 arg
.lock_owner
.id
= lsp
->ls_id
;
3031 status
= rpc_call_sync(server
->client
, &msg
, 0);
3034 request
->fl_type
= F_UNLCK
;
3036 case -NFS4ERR_DENIED
:
3039 request
->fl_ops
->fl_release_private(request
);
3041 up_read(&clp
->cl_sem
);
3045 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3047 struct nfs4_exception exception
= { };
3051 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3052 _nfs4_proc_getlk(state
, cmd
, request
),
3054 } while (exception
.retry
);
3058 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3061 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3063 res
= posix_lock_file_wait(file
, fl
);
3066 res
= flock_lock_file_wait(file
, fl
);
3074 struct nfs4_unlockdata
{
3075 struct nfs_locku_args arg
;
3076 struct nfs_locku_res res
;
3077 struct nfs4_lock_state
*lsp
;
3078 struct nfs_open_context
*ctx
;
3079 struct file_lock fl
;
3080 const struct nfs_server
*server
;
3081 unsigned long timestamp
;
3084 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3085 struct nfs_open_context
*ctx
,
3086 struct nfs4_lock_state
*lsp
,
3087 struct nfs_seqid
*seqid
)
3089 struct nfs4_unlockdata
*p
;
3090 struct inode
*inode
= lsp
->ls_state
->inode
;
3092 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
3095 p
->arg
.fh
= NFS_FH(inode
);
3097 p
->arg
.seqid
= seqid
;
3098 p
->arg
.stateid
= &lsp
->ls_stateid
;
3100 atomic_inc(&lsp
->ls_count
);
3101 /* Ensure we don't close file until we're done freeing locks! */
3102 p
->ctx
= get_nfs_open_context(ctx
);
3103 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3104 p
->server
= NFS_SERVER(inode
);
3108 static void nfs4_locku_release_calldata(void *data
)
3110 struct nfs4_unlockdata
*calldata
= data
;
3111 nfs_free_seqid(calldata
->arg
.seqid
);
3112 nfs4_put_lock_state(calldata
->lsp
);
3113 put_nfs_open_context(calldata
->ctx
);
3117 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3119 struct nfs4_unlockdata
*calldata
= data
;
3121 if (RPC_ASSASSINATED(task
))
3123 nfs_increment_lock_seqid(task
->tk_status
, calldata
->arg
.seqid
);
3124 switch (task
->tk_status
) {
3126 memcpy(calldata
->lsp
->ls_stateid
.data
,
3127 calldata
->res
.stateid
.data
,
3128 sizeof(calldata
->lsp
->ls_stateid
.data
));
3129 renew_lease(calldata
->server
, calldata
->timestamp
);
3131 case -NFS4ERR_STALE_STATEID
:
3132 case -NFS4ERR_EXPIRED
:
3135 if (nfs4_async_handle_error(task
, calldata
->server
) == -EAGAIN
)
3136 rpc_restart_call(task
);
3140 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3142 struct nfs4_unlockdata
*calldata
= data
;
3143 struct rpc_message msg
= {
3144 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3145 .rpc_argp
= &calldata
->arg
,
3146 .rpc_resp
= &calldata
->res
,
3147 .rpc_cred
= calldata
->lsp
->ls_state
->owner
->so_cred
,
3150 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3152 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3153 /* Note: exit _without_ running nfs4_locku_done */
3154 task
->tk_action
= NULL
;
3157 calldata
->timestamp
= jiffies
;
3158 rpc_call_setup(task
, &msg
, 0);
3161 static const struct rpc_call_ops nfs4_locku_ops
= {
3162 .rpc_call_prepare
= nfs4_locku_prepare
,
3163 .rpc_call_done
= nfs4_locku_done
,
3164 .rpc_release
= nfs4_locku_release_calldata
,
3167 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3168 struct nfs_open_context
*ctx
,
3169 struct nfs4_lock_state
*lsp
,
3170 struct nfs_seqid
*seqid
)
3172 struct nfs4_unlockdata
*data
;
3174 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3176 nfs_free_seqid(seqid
);
3177 return ERR_PTR(-ENOMEM
);
3180 return rpc_run_task(NFS_CLIENT(lsp
->ls_state
->inode
), RPC_TASK_ASYNC
, &nfs4_locku_ops
, data
);
3183 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3185 struct nfs_seqid
*seqid
;
3186 struct nfs4_lock_state
*lsp
;
3187 struct rpc_task
*task
;
3190 status
= nfs4_set_lock_state(state
, request
);
3191 /* Unlock _before_ we do the RPC call */
3192 request
->fl_flags
|= FL_EXISTS
;
3193 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
)
3197 /* Is this a delegated lock? */
3198 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3200 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3201 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3205 task
= nfs4_do_unlck(request
, request
->fl_file
->private_data
, lsp
, seqid
);
3206 status
= PTR_ERR(task
);
3209 status
= nfs4_wait_for_completion_rpc_task(task
);
3215 struct nfs4_lockdata
{
3216 struct nfs_lock_args arg
;
3217 struct nfs_lock_res res
;
3218 struct nfs4_lock_state
*lsp
;
3219 struct nfs_open_context
*ctx
;
3220 struct file_lock fl
;
3221 unsigned long timestamp
;
3226 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3227 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3229 struct nfs4_lockdata
*p
;
3230 struct inode
*inode
= lsp
->ls_state
->inode
;
3231 struct nfs_server
*server
= NFS_SERVER(inode
);
3233 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3237 p
->arg
.fh
= NFS_FH(inode
);
3239 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3240 if (p
->arg
.lock_seqid
== NULL
)
3242 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3243 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3244 p
->arg
.lock_owner
.id
= lsp
->ls_id
;
3246 atomic_inc(&lsp
->ls_count
);
3247 p
->ctx
= get_nfs_open_context(ctx
);
3248 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3255 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3257 struct nfs4_lockdata
*data
= calldata
;
3258 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3259 struct nfs4_state_owner
*sp
= state
->owner
;
3260 struct rpc_message msg
= {
3261 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3262 .rpc_argp
= &data
->arg
,
3263 .rpc_resp
= &data
->res
,
3264 .rpc_cred
= sp
->so_cred
,
3267 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3269 dprintk("%s: begin!\n", __FUNCTION__
);
3270 /* Do we need to do an open_to_lock_owner? */
3271 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3272 data
->arg
.open_seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
3273 if (data
->arg
.open_seqid
== NULL
) {
3274 data
->rpc_status
= -ENOMEM
;
3275 task
->tk_action
= NULL
;
3278 data
->arg
.open_stateid
= &state
->stateid
;
3279 data
->arg
.new_lock_owner
= 1;
3281 data
->timestamp
= jiffies
;
3282 rpc_call_setup(task
, &msg
, 0);
3284 dprintk("%s: done!, ret = %d\n", __FUNCTION__
, data
->rpc_status
);
3287 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3289 struct nfs4_lockdata
*data
= calldata
;
3291 dprintk("%s: begin!\n", __FUNCTION__
);
3293 data
->rpc_status
= task
->tk_status
;
3294 if (RPC_ASSASSINATED(task
))
3296 if (data
->arg
.new_lock_owner
!= 0) {
3297 nfs_increment_open_seqid(data
->rpc_status
, data
->arg
.open_seqid
);
3298 if (data
->rpc_status
== 0)
3299 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3303 if (data
->rpc_status
== 0) {
3304 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3305 sizeof(data
->lsp
->ls_stateid
.data
));
3306 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3307 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3309 nfs_increment_lock_seqid(data
->rpc_status
, data
->arg
.lock_seqid
);
3311 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, data
->rpc_status
);
3314 static void nfs4_lock_release(void *calldata
)
3316 struct nfs4_lockdata
*data
= calldata
;
3318 dprintk("%s: begin!\n", __FUNCTION__
);
3319 if (data
->arg
.open_seqid
!= NULL
)
3320 nfs_free_seqid(data
->arg
.open_seqid
);
3321 if (data
->cancelled
!= 0) {
3322 struct rpc_task
*task
;
3323 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3324 data
->arg
.lock_seqid
);
3327 dprintk("%s: cancelling lock!\n", __FUNCTION__
);
3329 nfs_free_seqid(data
->arg
.lock_seqid
);
3330 nfs4_put_lock_state(data
->lsp
);
3331 put_nfs_open_context(data
->ctx
);
3333 dprintk("%s: done!\n", __FUNCTION__
);
3336 static const struct rpc_call_ops nfs4_lock_ops
= {
3337 .rpc_call_prepare
= nfs4_lock_prepare
,
3338 .rpc_call_done
= nfs4_lock_done
,
3339 .rpc_release
= nfs4_lock_release
,
3342 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3344 struct nfs4_lockdata
*data
;
3345 struct rpc_task
*task
;
3348 dprintk("%s: begin!\n", __FUNCTION__
);
3349 data
= nfs4_alloc_lockdata(fl
, fl
->fl_file
->private_data
,
3350 fl
->fl_u
.nfs4_fl
.owner
);
3354 data
->arg
.block
= 1;
3356 data
->arg
.reclaim
= 1;
3357 task
= rpc_run_task(NFS_CLIENT(state
->inode
), RPC_TASK_ASYNC
,
3358 &nfs4_lock_ops
, data
);
3360 return PTR_ERR(task
);
3361 ret
= nfs4_wait_for_completion_rpc_task(task
);
3363 ret
= data
->rpc_status
;
3364 if (ret
== -NFS4ERR_DENIED
)
3367 data
->cancelled
= 1;
3369 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, ret
);
3373 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
3375 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3376 struct nfs4_exception exception
= { };
3380 /* Cache the lock if possible... */
3381 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3383 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
3384 if (err
!= -NFS4ERR_DELAY
)
3386 nfs4_handle_exception(server
, err
, &exception
);
3387 } while (exception
.retry
);
3391 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
3393 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3394 struct nfs4_exception exception
= { };
3397 err
= nfs4_set_lock_state(state
, request
);
3401 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3403 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
3404 if (err
!= -NFS4ERR_DELAY
)
3406 nfs4_handle_exception(server
, err
, &exception
);
3407 } while (exception
.retry
);
3411 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3413 struct nfs_client
*clp
= state
->owner
->so_client
;
3414 unsigned char fl_flags
= request
->fl_flags
;
3417 /* Is this a delegated open? */
3418 status
= nfs4_set_lock_state(state
, request
);
3421 request
->fl_flags
|= FL_ACCESS
;
3422 status
= do_vfs_lock(request
->fl_file
, request
);
3425 down_read(&clp
->cl_sem
);
3426 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3427 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3428 /* Yes: cache locks! */
3429 down_read(&nfsi
->rwsem
);
3430 /* ...but avoid races with delegation recall... */
3431 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3432 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
3433 status
= do_vfs_lock(request
->fl_file
, request
);
3434 up_read(&nfsi
->rwsem
);
3437 up_read(&nfsi
->rwsem
);
3439 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
3442 /* Note: we always want to sleep here! */
3443 request
->fl_flags
= fl_flags
| FL_SLEEP
;
3444 if (do_vfs_lock(request
->fl_file
, request
) < 0)
3445 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __FUNCTION__
);
3447 up_read(&clp
->cl_sem
);
3449 request
->fl_flags
= fl_flags
;
3453 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3455 struct nfs4_exception exception
= { };
3459 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3460 _nfs4_proc_setlk(state
, cmd
, request
),
3462 } while (exception
.retry
);
3467 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
3469 struct nfs_open_context
*ctx
;
3470 struct nfs4_state
*state
;
3471 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
3474 /* verify open state */
3475 ctx
= (struct nfs_open_context
*)filp
->private_data
;
3478 if (request
->fl_start
< 0 || request
->fl_end
< 0)
3482 return nfs4_proc_getlk(state
, F_GETLK
, request
);
3484 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
3487 if (request
->fl_type
== F_UNLCK
)
3488 return nfs4_proc_unlck(state
, cmd
, request
);
3491 status
= nfs4_proc_setlk(state
, cmd
, request
);
3492 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
3494 timeout
= nfs4_set_lock_task_retry(timeout
);
3495 status
= -ERESTARTSYS
;
3498 } while(status
< 0);
3502 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
3504 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3505 struct nfs4_exception exception
= { };
3508 err
= nfs4_set_lock_state(state
, fl
);
3512 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
3513 if (err
!= -NFS4ERR_DELAY
)
3515 err
= nfs4_handle_exception(server
, err
, &exception
);
3516 } while (exception
.retry
);
3521 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
3523 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
3524 size_t buflen
, int flags
)
3526 struct inode
*inode
= dentry
->d_inode
;
3528 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3531 if (!S_ISREG(inode
->i_mode
) &&
3532 (!S_ISDIR(inode
->i_mode
) || inode
->i_mode
& S_ISVTX
))
3535 return nfs4_proc_set_acl(inode
, buf
, buflen
);
3538 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
3539 * and that's what we'll do for e.g. user attributes that haven't been set.
3540 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
3541 * attributes in kernel-managed attribute namespaces. */
3542 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
3545 struct inode
*inode
= dentry
->d_inode
;
3547 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3550 return nfs4_proc_get_acl(inode
, buf
, buflen
);
3553 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
3555 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
3557 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
3559 if (buf
&& buflen
< len
)
3562 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
3566 int nfs4_proc_fs_locations(struct inode
*dir
, struct qstr
*name
,
3567 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
3569 struct nfs_server
*server
= NFS_SERVER(dir
);
3571 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
3572 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
3574 struct nfs4_fs_locations_arg args
= {
3575 .dir_fh
= NFS_FH(dir
),
3580 struct rpc_message msg
= {
3581 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
3583 .rpc_resp
= fs_locations
,
3587 dprintk("%s: start\n", __FUNCTION__
);
3588 nfs_fattr_init(&fs_locations
->fattr
);
3589 fs_locations
->server
= server
;
3590 fs_locations
->nlocations
= 0;
3591 status
= rpc_call_sync(server
->client
, &msg
, 0);
3592 dprintk("%s: returned status = %d\n", __FUNCTION__
, status
);
3596 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops
= {
3597 .recover_open
= nfs4_open_reclaim
,
3598 .recover_lock
= nfs4_lock_reclaim
,
3601 struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops
= {
3602 .recover_open
= nfs4_open_expired
,
3603 .recover_lock
= nfs4_lock_expired
,
3606 static const struct inode_operations nfs4_file_inode_operations
= {
3607 .permission
= nfs_permission
,
3608 .getattr
= nfs_getattr
,
3609 .setattr
= nfs_setattr
,
3610 .getxattr
= nfs4_getxattr
,
3611 .setxattr
= nfs4_setxattr
,
3612 .listxattr
= nfs4_listxattr
,
3615 const struct nfs_rpc_ops nfs_v4_clientops
= {
3616 .version
= 4, /* protocol version */
3617 .dentry_ops
= &nfs4_dentry_operations
,
3618 .dir_inode_ops
= &nfs4_dir_inode_operations
,
3619 .file_inode_ops
= &nfs4_file_inode_operations
,
3620 .getroot
= nfs4_proc_get_root
,
3621 .getattr
= nfs4_proc_getattr
,
3622 .setattr
= nfs4_proc_setattr
,
3623 .lookupfh
= nfs4_proc_lookupfh
,
3624 .lookup
= nfs4_proc_lookup
,
3625 .access
= nfs4_proc_access
,
3626 .readlink
= nfs4_proc_readlink
,
3627 .create
= nfs4_proc_create
,
3628 .remove
= nfs4_proc_remove
,
3629 .unlink_setup
= nfs4_proc_unlink_setup
,
3630 .unlink_done
= nfs4_proc_unlink_done
,
3631 .rename
= nfs4_proc_rename
,
3632 .link
= nfs4_proc_link
,
3633 .symlink
= nfs4_proc_symlink
,
3634 .mkdir
= nfs4_proc_mkdir
,
3635 .rmdir
= nfs4_proc_remove
,
3636 .readdir
= nfs4_proc_readdir
,
3637 .mknod
= nfs4_proc_mknod
,
3638 .statfs
= nfs4_proc_statfs
,
3639 .fsinfo
= nfs4_proc_fsinfo
,
3640 .pathconf
= nfs4_proc_pathconf
,
3641 .set_capabilities
= nfs4_server_capabilities
,
3642 .decode_dirent
= nfs4_decode_dirent
,
3643 .read_setup
= nfs4_proc_read_setup
,
3644 .read_done
= nfs4_read_done
,
3645 .write_setup
= nfs4_proc_write_setup
,
3646 .write_done
= nfs4_write_done
,
3647 .commit_setup
= nfs4_proc_commit_setup
,
3648 .commit_done
= nfs4_commit_done
,
3649 .file_open
= nfs_open
,
3650 .file_release
= nfs_release
,
3651 .lock
= nfs4_proc_lock
,
3652 .clear_acl_cache
= nfs4_zap_acl_attr
,