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 (1*HZ)
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 nfs4_client
*clp
);
68 extern u32
*nfs4_decode_dirent(u32
*p
, struct nfs_entry
*entry
, int plus
);
69 extern struct rpc_procinfo nfs4_procedures
[];
71 /* Prevent leaks of NFSv4 errors into userland */
72 int nfs4_map_errors(int err
)
75 dprintk("%s could not handle NFSv4 error %d\n",
83 * This is our standard bitmap for GETATTR requests.
85 const u32 nfs4_fattr_bitmap
[2] = {
90 | FATTR4_WORD0_FILEID
,
92 | FATTR4_WORD1_NUMLINKS
94 | FATTR4_WORD1_OWNER_GROUP
96 | FATTR4_WORD1_SPACE_USED
97 | FATTR4_WORD1_TIME_ACCESS
98 | FATTR4_WORD1_TIME_METADATA
99 | FATTR4_WORD1_TIME_MODIFY
102 const u32 nfs4_statfs_bitmap
[2] = {
103 FATTR4_WORD0_FILES_AVAIL
104 | FATTR4_WORD0_FILES_FREE
105 | FATTR4_WORD0_FILES_TOTAL
,
106 FATTR4_WORD1_SPACE_AVAIL
107 | FATTR4_WORD1_SPACE_FREE
108 | FATTR4_WORD1_SPACE_TOTAL
111 const u32 nfs4_pathconf_bitmap
[2] = {
113 | FATTR4_WORD0_MAXNAME
,
117 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
118 | FATTR4_WORD0_MAXREAD
119 | FATTR4_WORD0_MAXWRITE
120 | FATTR4_WORD0_LEASE_TIME
,
124 static void nfs4_setup_readdir(u64 cookie
, u32
*verifier
, struct dentry
*dentry
,
125 struct nfs4_readdir_arg
*readdir
)
129 BUG_ON(readdir
->count
< 80);
131 readdir
->cookie
= cookie
;
132 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
137 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
142 * NFSv4 servers do not return entries for '.' and '..'
143 * Therefore, we fake these entries here. We let '.'
144 * have cookie 0 and '..' have cookie 1. Note that
145 * when talking to the server, we always send cookie 0
148 start
= p
= (u32
*)kmap_atomic(*readdir
->pages
, KM_USER0
);
151 *p
++ = xdr_one
; /* next */
152 *p
++ = xdr_zero
; /* cookie, first word */
153 *p
++ = xdr_one
; /* cookie, second word */
154 *p
++ = xdr_one
; /* entry len */
155 memcpy(p
, ".\0\0\0", 4); /* entry */
157 *p
++ = xdr_one
; /* bitmap length */
158 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
159 *p
++ = htonl(8); /* attribute buffer length */
160 p
= xdr_encode_hyper(p
, dentry
->d_inode
->i_ino
);
163 *p
++ = xdr_one
; /* next */
164 *p
++ = xdr_zero
; /* cookie, first word */
165 *p
++ = xdr_two
; /* cookie, second word */
166 *p
++ = xdr_two
; /* entry len */
167 memcpy(p
, "..\0\0", 4); /* entry */
169 *p
++ = xdr_one
; /* bitmap length */
170 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
171 *p
++ = htonl(8); /* attribute buffer length */
172 p
= xdr_encode_hyper(p
, dentry
->d_parent
->d_inode
->i_ino
);
174 readdir
->pgbase
= (char *)p
- (char *)start
;
175 readdir
->count
-= readdir
->pgbase
;
176 kunmap_atomic(start
, KM_USER0
);
179 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
181 struct nfs4_client
*clp
= server
->nfs4_state
;
182 spin_lock(&clp
->cl_lock
);
183 if (time_before(clp
->cl_last_renewal
,timestamp
))
184 clp
->cl_last_renewal
= timestamp
;
185 spin_unlock(&clp
->cl_lock
);
188 static void update_changeattr(struct inode
*inode
, struct nfs4_change_info
*cinfo
)
190 struct nfs_inode
*nfsi
= NFS_I(inode
);
192 spin_lock(&inode
->i_lock
);
193 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
;
194 if (cinfo
->before
== nfsi
->change_attr
&& cinfo
->atomic
)
195 nfsi
->change_attr
= cinfo
->after
;
196 spin_unlock(&inode
->i_lock
);
199 struct nfs4_opendata
{
201 struct nfs_openargs o_arg
;
202 struct nfs_openres o_res
;
203 struct nfs_open_confirmargs c_arg
;
204 struct nfs_open_confirmres c_res
;
205 struct nfs_fattr f_attr
;
206 struct nfs_fattr dir_attr
;
207 struct dentry
*dentry
;
209 struct nfs4_state_owner
*owner
;
211 unsigned long timestamp
;
216 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
217 struct nfs4_state_owner
*sp
, int flags
,
218 const struct iattr
*attrs
)
220 struct dentry
*parent
= dget_parent(dentry
);
221 struct inode
*dir
= parent
->d_inode
;
222 struct nfs_server
*server
= NFS_SERVER(dir
);
223 struct nfs4_opendata
*p
;
225 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
228 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
229 if (p
->o_arg
.seqid
== NULL
)
231 atomic_set(&p
->count
, 1);
232 p
->dentry
= dget(dentry
);
235 atomic_inc(&sp
->so_count
);
236 p
->o_arg
.fh
= NFS_FH(dir
);
237 p
->o_arg
.open_flags
= flags
,
238 p
->o_arg
.clientid
= server
->nfs4_state
->cl_clientid
;
239 p
->o_arg
.id
= sp
->so_id
;
240 p
->o_arg
.name
= &dentry
->d_name
;
241 p
->o_arg
.server
= server
;
242 p
->o_arg
.bitmask
= server
->attr_bitmask
;
243 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
244 p
->o_res
.f_attr
= &p
->f_attr
;
245 p
->o_res
.dir_attr
= &p
->dir_attr
;
246 p
->o_res
.server
= server
;
247 nfs_fattr_init(&p
->f_attr
);
248 nfs_fattr_init(&p
->dir_attr
);
249 if (flags
& O_EXCL
) {
250 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
253 } else if (flags
& O_CREAT
) {
254 p
->o_arg
.u
.attrs
= &p
->attrs
;
255 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
257 p
->c_arg
.fh
= &p
->o_res
.fh
;
258 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
259 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
268 static void nfs4_opendata_free(struct nfs4_opendata
*p
)
270 if (p
!= NULL
&& atomic_dec_and_test(&p
->count
)) {
271 nfs_free_seqid(p
->o_arg
.seqid
);
272 nfs4_put_state_owner(p
->owner
);
279 /* Helper for asynchronous RPC calls */
280 static int nfs4_call_async(struct rpc_clnt
*clnt
,
281 const struct rpc_call_ops
*tk_ops
, void *calldata
)
283 struct rpc_task
*task
;
285 if (!(task
= rpc_new_task(clnt
, RPC_TASK_ASYNC
, tk_ops
, calldata
)))
291 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
296 rpc_clnt_sigmask(task
->tk_client
, &oldset
);
297 ret
= rpc_wait_for_completion_task(task
);
298 rpc_clnt_sigunmask(task
->tk_client
, &oldset
);
302 static inline void update_open_stateflags(struct nfs4_state
*state
, mode_t open_flags
)
304 switch (open_flags
) {
311 case FMODE_READ
|FMODE_WRITE
:
316 static void update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, int open_flags
)
318 struct inode
*inode
= state
->inode
;
320 open_flags
&= (FMODE_READ
|FMODE_WRITE
);
321 /* Protect against nfs4_find_state_byowner() */
322 spin_lock(&state
->owner
->so_lock
);
323 spin_lock(&inode
->i_lock
);
324 memcpy(&state
->stateid
, stateid
, sizeof(state
->stateid
));
325 update_open_stateflags(state
, open_flags
);
326 nfs4_state_set_mode_locked(state
, state
->state
| open_flags
);
327 spin_unlock(&inode
->i_lock
);
328 spin_unlock(&state
->owner
->so_lock
);
331 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
334 struct nfs4_state
*state
= NULL
;
336 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
338 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
341 state
= nfs4_get_open_state(inode
, data
->owner
);
344 update_open_stateid(state
, &data
->o_res
.stateid
, data
->o_arg
.open_flags
);
351 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
353 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
354 struct nfs_open_context
*ctx
;
356 spin_lock(&state
->inode
->i_lock
);
357 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
358 if (ctx
->state
!= state
)
360 get_nfs_open_context(ctx
);
361 spin_unlock(&state
->inode
->i_lock
);
364 spin_unlock(&state
->inode
->i_lock
);
365 return ERR_PTR(-ENOENT
);
368 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, mode_t openflags
, nfs4_stateid
*stateid
)
372 opendata
->o_arg
.open_flags
= openflags
;
373 ret
= _nfs4_proc_open(opendata
);
376 memcpy(stateid
->data
, opendata
->o_res
.stateid
.data
,
377 sizeof(stateid
->data
));
381 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
383 nfs4_stateid stateid
;
384 struct nfs4_state
*newstate
;
389 /* memory barrier prior to reading state->n_* */
391 if (state
->n_rdwr
!= 0) {
392 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &stateid
);
395 mode
|= FMODE_READ
|FMODE_WRITE
;
396 if (opendata
->o_res
.delegation_type
!= 0)
397 delegation
= opendata
->o_res
.delegation_type
;
400 if (state
->n_wronly
!= 0) {
401 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &stateid
);
405 if (opendata
->o_res
.delegation_type
!= 0)
406 delegation
= opendata
->o_res
.delegation_type
;
409 if (state
->n_rdonly
!= 0) {
410 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &stateid
);
415 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
418 if (opendata
->o_res
.delegation_type
== 0)
419 opendata
->o_res
.delegation_type
= delegation
;
420 opendata
->o_arg
.open_flags
|= mode
;
421 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
422 if (newstate
!= NULL
) {
423 if (opendata
->o_res
.delegation_type
!= 0) {
424 struct nfs_inode
*nfsi
= NFS_I(newstate
->inode
);
425 int delegation_flags
= 0;
426 if (nfsi
->delegation
)
427 delegation_flags
= nfsi
->delegation
->flags
;
428 if (!(delegation_flags
& NFS_DELEGATION_NEED_RECLAIM
))
429 nfs_inode_set_delegation(newstate
->inode
,
430 opendata
->owner
->so_cred
,
433 nfs_inode_reclaim_delegation(newstate
->inode
,
434 opendata
->owner
->so_cred
,
437 nfs4_close_state(newstate
, opendata
->o_arg
.open_flags
);
439 if (newstate
!= state
)
446 * reclaim state on the server after a reboot.
448 static int _nfs4_do_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
, struct dentry
*dentry
)
450 struct nfs_delegation
*delegation
= NFS_I(state
->inode
)->delegation
;
451 struct nfs4_opendata
*opendata
;
452 int delegation_type
= 0;
455 if (delegation
!= NULL
) {
456 if (!(delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)) {
457 memcpy(&state
->stateid
, &delegation
->stateid
,
458 sizeof(state
->stateid
));
459 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
462 delegation_type
= delegation
->type
;
464 opendata
= nfs4_opendata_alloc(dentry
, sp
, 0, NULL
);
465 if (opendata
== NULL
)
467 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
468 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
469 nfs_copy_fh(&opendata
->o_res
.fh
, opendata
->o_arg
.fh
);
470 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
471 status
= nfs4_open_recover(opendata
, state
);
472 nfs4_opendata_free(opendata
);
476 static int nfs4_do_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
, struct dentry
*dentry
)
478 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
479 struct nfs4_exception exception
= { };
482 err
= _nfs4_do_open_reclaim(sp
, state
, dentry
);
483 if (err
!= -NFS4ERR_DELAY
)
485 nfs4_handle_exception(server
, err
, &exception
);
486 } while (exception
.retry
);
490 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
492 struct nfs_open_context
*ctx
;
495 ctx
= nfs4_state_find_open_context(state
);
498 ret
= nfs4_do_open_reclaim(sp
, state
, ctx
->dentry
);
499 put_nfs_open_context(ctx
);
503 static int _nfs4_open_delegation_recall(struct dentry
*dentry
, struct nfs4_state
*state
)
505 struct nfs4_state_owner
*sp
= state
->owner
;
506 struct nfs4_opendata
*opendata
;
509 if (!test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
511 opendata
= nfs4_opendata_alloc(dentry
, sp
, 0, NULL
);
512 if (opendata
== NULL
)
514 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
515 memcpy(opendata
->o_arg
.u
.delegation
.data
, state
->stateid
.data
,
516 sizeof(opendata
->o_arg
.u
.delegation
.data
));
517 ret
= nfs4_open_recover(opendata
, state
);
518 nfs4_opendata_free(opendata
);
522 int nfs4_open_delegation_recall(struct dentry
*dentry
, struct nfs4_state
*state
)
524 struct nfs4_exception exception
= { };
525 struct nfs_server
*server
= NFS_SERVER(dentry
->d_inode
);
528 err
= _nfs4_open_delegation_recall(dentry
, state
);
532 case -NFS4ERR_STALE_CLIENTID
:
533 case -NFS4ERR_STALE_STATEID
:
534 case -NFS4ERR_EXPIRED
:
535 /* Don't recall a delegation if it was lost */
536 nfs4_schedule_state_recovery(server
->nfs4_state
);
539 err
= nfs4_handle_exception(server
, err
, &exception
);
540 } while (exception
.retry
);
544 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
546 struct nfs4_opendata
*data
= calldata
;
547 struct rpc_message msg
= {
548 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
549 .rpc_argp
= &data
->c_arg
,
550 .rpc_resp
= &data
->c_res
,
551 .rpc_cred
= data
->owner
->so_cred
,
553 data
->timestamp
= jiffies
;
554 rpc_call_setup(task
, &msg
, 0);
557 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
559 struct nfs4_opendata
*data
= calldata
;
561 data
->rpc_status
= task
->tk_status
;
562 if (RPC_ASSASSINATED(task
))
564 if (data
->rpc_status
== 0) {
565 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
566 sizeof(data
->o_res
.stateid
.data
));
567 renew_lease(data
->o_res
.server
, data
->timestamp
);
569 nfs_increment_open_seqid(data
->rpc_status
, data
->c_arg
.seqid
);
570 nfs_confirm_seqid(&data
->owner
->so_seqid
, data
->rpc_status
);
573 static void nfs4_open_confirm_release(void *calldata
)
575 struct nfs4_opendata
*data
= calldata
;
576 struct nfs4_state
*state
= NULL
;
578 /* If this request hasn't been cancelled, do nothing */
579 if (data
->cancelled
== 0)
581 /* In case of error, no cleanup! */
582 if (data
->rpc_status
!= 0)
584 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
585 state
= nfs4_opendata_to_nfs4_state(data
);
587 nfs4_close_state(state
, data
->o_arg
.open_flags
);
589 nfs4_opendata_free(data
);
592 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
593 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
594 .rpc_call_done
= nfs4_open_confirm_done
,
595 .rpc_release
= nfs4_open_confirm_release
,
599 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
601 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
603 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
604 struct rpc_task
*task
;
607 atomic_inc(&data
->count
);
608 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_confirm_ops
, data
);
610 nfs4_opendata_free(data
);
611 return PTR_ERR(task
);
613 status
= nfs4_wait_for_completion_rpc_task(task
);
618 status
= data
->rpc_status
;
619 rpc_release_task(task
);
623 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
625 struct nfs4_opendata
*data
= calldata
;
626 struct nfs4_state_owner
*sp
= data
->owner
;
627 struct rpc_message msg
= {
628 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
629 .rpc_argp
= &data
->o_arg
,
630 .rpc_resp
= &data
->o_res
,
631 .rpc_cred
= sp
->so_cred
,
634 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
636 /* Update sequence id. */
637 data
->o_arg
.id
= sp
->so_id
;
638 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
639 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
640 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
641 data
->timestamp
= jiffies
;
642 rpc_call_setup(task
, &msg
, 0);
645 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
647 struct nfs4_opendata
*data
= calldata
;
649 data
->rpc_status
= task
->tk_status
;
650 if (RPC_ASSASSINATED(task
))
652 if (task
->tk_status
== 0) {
653 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
657 data
->rpc_status
= -ELOOP
;
660 data
->rpc_status
= -EISDIR
;
663 data
->rpc_status
= -ENOTDIR
;
665 renew_lease(data
->o_res
.server
, data
->timestamp
);
667 nfs_increment_open_seqid(data
->rpc_status
, data
->o_arg
.seqid
);
670 static void nfs4_open_release(void *calldata
)
672 struct nfs4_opendata
*data
= calldata
;
673 struct nfs4_state
*state
= NULL
;
675 /* If this request hasn't been cancelled, do nothing */
676 if (data
->cancelled
== 0)
678 /* In case of error, no cleanup! */
679 if (data
->rpc_status
!= 0)
681 /* In case we need an open_confirm, no cleanup! */
682 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
684 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
685 state
= nfs4_opendata_to_nfs4_state(data
);
687 nfs4_close_state(state
, data
->o_arg
.open_flags
);
689 nfs4_opendata_free(data
);
692 static const struct rpc_call_ops nfs4_open_ops
= {
693 .rpc_call_prepare
= nfs4_open_prepare
,
694 .rpc_call_done
= nfs4_open_done
,
695 .rpc_release
= nfs4_open_release
,
699 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
701 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
703 struct inode
*dir
= data
->dir
->d_inode
;
704 struct nfs_server
*server
= NFS_SERVER(dir
);
705 struct nfs_openargs
*o_arg
= &data
->o_arg
;
706 struct nfs_openres
*o_res
= &data
->o_res
;
707 struct rpc_task
*task
;
710 atomic_inc(&data
->count
);
711 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_ops
, data
);
713 nfs4_opendata_free(data
);
714 return PTR_ERR(task
);
716 status
= nfs4_wait_for_completion_rpc_task(task
);
721 status
= data
->rpc_status
;
722 rpc_release_task(task
);
726 if (o_arg
->open_flags
& O_CREAT
) {
727 update_changeattr(dir
, &o_res
->cinfo
);
728 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
730 nfs_refresh_inode(dir
, o_res
->dir_attr
);
731 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
732 status
= _nfs4_proc_open_confirm(data
);
736 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
737 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
738 return server
->rpc_ops
->getattr(server
, &o_res
->fh
, o_res
->f_attr
);
742 static int _nfs4_do_access(struct inode
*inode
, struct rpc_cred
*cred
, int openflags
)
744 struct nfs_access_entry cache
;
748 if (openflags
& FMODE_READ
)
750 if (openflags
& FMODE_WRITE
)
752 status
= nfs_access_get_cached(inode
, cred
, &cache
);
756 /* Be clever: ask server to check for all possible rights */
757 cache
.mask
= MAY_EXEC
| MAY_WRITE
| MAY_READ
;
759 cache
.jiffies
= jiffies
;
760 status
= _nfs4_proc_access(inode
, &cache
);
763 nfs_access_add_cache(inode
, &cache
);
765 if ((cache
.mask
& mask
) == mask
)
770 int nfs4_recover_expired_lease(struct nfs_server
*server
)
772 struct nfs4_client
*clp
= server
->nfs4_state
;
774 if (test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
))
775 nfs4_schedule_state_recovery(clp
);
776 return nfs4_wait_clnt_recover(server
->client
, clp
);
781 * reclaim state on the server after a network partition.
782 * Assumes caller holds the appropriate lock
784 static int _nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
, struct dentry
*dentry
)
786 struct inode
*inode
= state
->inode
;
787 struct nfs_delegation
*delegation
= NFS_I(inode
)->delegation
;
788 struct nfs4_opendata
*opendata
;
789 int openflags
= state
->state
& (FMODE_READ
|FMODE_WRITE
);
792 if (delegation
!= NULL
&& !(delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)) {
793 ret
= _nfs4_do_access(inode
, sp
->so_cred
, openflags
);
796 memcpy(&state
->stateid
, &delegation
->stateid
, sizeof(state
->stateid
));
797 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
800 opendata
= nfs4_opendata_alloc(dentry
, sp
, openflags
, NULL
);
801 if (opendata
== NULL
)
803 ret
= nfs4_open_recover(opendata
, state
);
804 if (ret
== -ESTALE
) {
805 /* Invalidate the state owner so we don't ever use it again */
806 nfs4_drop_state_owner(sp
);
809 nfs4_opendata_free(opendata
);
813 static inline int nfs4_do_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
, struct dentry
*dentry
)
815 struct nfs_server
*server
= NFS_SERVER(dentry
->d_inode
);
816 struct nfs4_exception exception
= { };
820 err
= _nfs4_open_expired(sp
, state
, dentry
);
821 if (err
== -NFS4ERR_DELAY
)
822 nfs4_handle_exception(server
, err
, &exception
);
823 } while (exception
.retry
);
827 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
829 struct nfs_open_context
*ctx
;
832 ctx
= nfs4_state_find_open_context(state
);
835 ret
= nfs4_do_open_expired(sp
, state
, ctx
->dentry
);
836 put_nfs_open_context(ctx
);
841 * Returns a referenced nfs4_state if there is an open delegation on the file
843 static int _nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
845 struct nfs_delegation
*delegation
;
846 struct nfs_server
*server
= NFS_SERVER(inode
);
847 struct nfs4_client
*clp
= server
->nfs4_state
;
848 struct nfs_inode
*nfsi
= NFS_I(inode
);
849 struct nfs4_state_owner
*sp
= NULL
;
850 struct nfs4_state
*state
= NULL
;
851 int open_flags
= flags
& (FMODE_READ
|FMODE_WRITE
);
855 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
856 dprintk("%s: nfs4_get_state_owner failed!\n", __FUNCTION__
);
859 err
= nfs4_recover_expired_lease(server
);
861 goto out_put_state_owner
;
862 /* Protect against reboot recovery - NOTE ORDER! */
863 down_read(&clp
->cl_sem
);
864 /* Protect against delegation recall */
865 down_read(&nfsi
->rwsem
);
866 delegation
= NFS_I(inode
)->delegation
;
868 if (delegation
== NULL
|| (delegation
->type
& open_flags
) != open_flags
)
871 state
= nfs4_get_open_state(inode
, sp
);
876 if ((state
->state
& open_flags
) == open_flags
) {
877 spin_lock(&inode
->i_lock
);
878 update_open_stateflags(state
, open_flags
);
879 spin_unlock(&inode
->i_lock
);
881 } else if (state
->state
!= 0)
882 goto out_put_open_state
;
885 err
= _nfs4_do_access(inode
, cred
, open_flags
);
888 goto out_put_open_state
;
889 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
890 update_open_stateid(state
, &delegation
->stateid
, open_flags
);
892 nfs4_put_state_owner(sp
);
893 up_read(&nfsi
->rwsem
);
894 up_read(&clp
->cl_sem
);
898 nfs4_put_open_state(state
);
900 up_read(&nfsi
->rwsem
);
901 up_read(&clp
->cl_sem
);
903 nfs_inode_return_delegation(inode
);
905 nfs4_put_state_owner(sp
);
909 static struct nfs4_state
*nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
)
911 struct nfs4_exception exception
= { };
912 struct nfs4_state
*res
= ERR_PTR(-EIO
);
916 err
= _nfs4_open_delegated(inode
, flags
, cred
, &res
);
919 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(inode
),
921 } while (exception
.retry
);
926 * Returns a referenced nfs4_state
928 static int _nfs4_do_open(struct inode
*dir
, struct dentry
*dentry
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
930 struct nfs4_state_owner
*sp
;
931 struct nfs4_state
*state
= NULL
;
932 struct nfs_server
*server
= NFS_SERVER(dir
);
933 struct nfs4_client
*clp
= server
->nfs4_state
;
934 struct nfs4_opendata
*opendata
;
937 /* Protect against reboot recovery conflicts */
939 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
940 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
943 status
= nfs4_recover_expired_lease(server
);
945 goto err_put_state_owner
;
946 down_read(&clp
->cl_sem
);
948 opendata
= nfs4_opendata_alloc(dentry
, sp
, flags
, sattr
);
949 if (opendata
== NULL
)
950 goto err_put_state_owner
;
952 status
= _nfs4_proc_open(opendata
);
954 goto err_opendata_free
;
957 state
= nfs4_opendata_to_nfs4_state(opendata
);
959 goto err_opendata_free
;
960 if (opendata
->o_res
.delegation_type
!= 0)
961 nfs_inode_set_delegation(state
->inode
, cred
, &opendata
->o_res
);
962 nfs4_opendata_free(opendata
);
963 nfs4_put_state_owner(sp
);
964 up_read(&clp
->cl_sem
);
968 nfs4_opendata_free(opendata
);
970 nfs4_put_state_owner(sp
);
972 /* Note: clp->cl_sem must be released before nfs4_put_open_state()! */
973 up_read(&clp
->cl_sem
);
979 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct dentry
*dentry
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
981 struct nfs4_exception exception
= { };
982 struct nfs4_state
*res
;
986 status
= _nfs4_do_open(dir
, dentry
, flags
, sattr
, cred
, &res
);
989 /* NOTE: BAD_SEQID means the server and client disagree about the
990 * book-keeping w.r.t. state-changing operations
991 * (OPEN/CLOSE/LOCK/LOCKU...)
992 * It is actually a sign of a bug on the client or on the server.
994 * If we receive a BAD_SEQID error in the particular case of
995 * doing an OPEN, we assume that nfs_increment_open_seqid() will
996 * have unhashed the old state_owner for us, and that we can
997 * therefore safely retry using a new one. We should still warn
1000 if (status
== -NFS4ERR_BAD_SEQID
) {
1001 printk(KERN_WARNING
"NFS: v4 server returned a bad sequence-id error!\n");
1002 exception
.retry
= 1;
1006 * BAD_STATEID on OPEN means that the server cancelled our
1007 * state before it received the OPEN_CONFIRM.
1008 * Recover by retrying the request as per the discussion
1009 * on Page 181 of RFC3530.
1011 if (status
== -NFS4ERR_BAD_STATEID
) {
1012 exception
.retry
= 1;
1015 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1016 status
, &exception
));
1017 } while (exception
.retry
);
1021 static int _nfs4_do_setattr(struct nfs_server
*server
, struct nfs_fattr
*fattr
,
1022 struct nfs_fh
*fhandle
, struct iattr
*sattr
,
1023 struct nfs4_state
*state
)
1025 struct nfs_setattrargs arg
= {
1029 .bitmask
= server
->attr_bitmask
,
1031 struct nfs_setattrres res
= {
1035 struct rpc_message msg
= {
1036 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1040 unsigned long timestamp
= jiffies
;
1043 nfs_fattr_init(fattr
);
1045 if (state
!= NULL
) {
1046 msg
.rpc_cred
= state
->owner
->so_cred
;
1047 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1049 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1051 status
= rpc_call_sync(server
->client
, &msg
, 0);
1052 if (status
== 0 && state
!= NULL
)
1053 renew_lease(server
, timestamp
);
1057 static int nfs4_do_setattr(struct nfs_server
*server
, struct nfs_fattr
*fattr
,
1058 struct nfs_fh
*fhandle
, struct iattr
*sattr
,
1059 struct nfs4_state
*state
)
1061 struct nfs4_exception exception
= { };
1064 err
= nfs4_handle_exception(server
,
1065 _nfs4_do_setattr(server
, fattr
, fhandle
, sattr
,
1068 } while (exception
.retry
);
1072 struct nfs4_closedata
{
1073 struct inode
*inode
;
1074 struct nfs4_state
*state
;
1075 struct nfs_closeargs arg
;
1076 struct nfs_closeres res
;
1077 struct nfs_fattr fattr
;
1078 unsigned long timestamp
;
1081 static void nfs4_free_closedata(void *data
)
1083 struct nfs4_closedata
*calldata
= data
;
1084 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1086 nfs4_put_open_state(calldata
->state
);
1087 nfs_free_seqid(calldata
->arg
.seqid
);
1088 nfs4_put_state_owner(sp
);
1092 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1094 struct nfs4_closedata
*calldata
= data
;
1095 struct nfs4_state
*state
= calldata
->state
;
1096 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1098 if (RPC_ASSASSINATED(task
))
1100 /* hmm. we are done with the inode, and in the process of freeing
1101 * the state_owner. we keep this around to process errors
1103 nfs_increment_open_seqid(task
->tk_status
, calldata
->arg
.seqid
);
1104 switch (task
->tk_status
) {
1106 memcpy(&state
->stateid
, &calldata
->res
.stateid
,
1107 sizeof(state
->stateid
));
1108 renew_lease(server
, calldata
->timestamp
);
1110 case -NFS4ERR_STALE_STATEID
:
1111 case -NFS4ERR_EXPIRED
:
1112 nfs4_schedule_state_recovery(server
->nfs4_state
);
1115 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
1116 rpc_restart_call(task
);
1120 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1123 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1125 struct nfs4_closedata
*calldata
= data
;
1126 struct nfs4_state
*state
= calldata
->state
;
1127 struct rpc_message msg
= {
1128 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1129 .rpc_argp
= &calldata
->arg
,
1130 .rpc_resp
= &calldata
->res
,
1131 .rpc_cred
= state
->owner
->so_cred
,
1133 int mode
= 0, old_mode
;
1135 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1137 /* Recalculate the new open mode in case someone reopened the file
1138 * while we were waiting in line to be scheduled.
1140 spin_lock(&state
->owner
->so_lock
);
1141 spin_lock(&calldata
->inode
->i_lock
);
1142 mode
= old_mode
= state
->state
;
1143 if (state
->n_rdwr
== 0) {
1144 if (state
->n_rdonly
== 0)
1145 mode
&= ~FMODE_READ
;
1146 if (state
->n_wronly
== 0)
1147 mode
&= ~FMODE_WRITE
;
1149 nfs4_state_set_mode_locked(state
, mode
);
1150 spin_unlock(&calldata
->inode
->i_lock
);
1151 spin_unlock(&state
->owner
->so_lock
);
1152 if (mode
== old_mode
|| test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
1153 /* Note: exit _without_ calling nfs4_close_done */
1154 task
->tk_action
= NULL
;
1157 nfs_fattr_init(calldata
->res
.fattr
);
1159 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1160 calldata
->arg
.open_flags
= mode
;
1161 calldata
->timestamp
= jiffies
;
1162 rpc_call_setup(task
, &msg
, 0);
1165 static const struct rpc_call_ops nfs4_close_ops
= {
1166 .rpc_call_prepare
= nfs4_close_prepare
,
1167 .rpc_call_done
= nfs4_close_done
,
1168 .rpc_release
= nfs4_free_closedata
,
1172 * It is possible for data to be read/written from a mem-mapped file
1173 * after the sys_close call (which hits the vfs layer as a flush).
1174 * This means that we can't safely call nfsv4 close on a file until
1175 * the inode is cleared. This in turn means that we are not good
1176 * NFSv4 citizens - we do not indicate to the server to update the file's
1177 * share state even when we are done with one of the three share
1178 * stateid's in the inode.
1180 * NOTE: Caller must be holding the sp->so_owner semaphore!
1182 int nfs4_do_close(struct inode
*inode
, struct nfs4_state
*state
)
1184 struct nfs_server
*server
= NFS_SERVER(inode
);
1185 struct nfs4_closedata
*calldata
;
1186 int status
= -ENOMEM
;
1188 calldata
= kmalloc(sizeof(*calldata
), GFP_KERNEL
);
1189 if (calldata
== NULL
)
1191 calldata
->inode
= inode
;
1192 calldata
->state
= state
;
1193 calldata
->arg
.fh
= NFS_FH(inode
);
1194 calldata
->arg
.stateid
= &state
->stateid
;
1195 /* Serialization for the sequence id */
1196 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1197 if (calldata
->arg
.seqid
== NULL
)
1198 goto out_free_calldata
;
1199 calldata
->arg
.bitmask
= server
->attr_bitmask
;
1200 calldata
->res
.fattr
= &calldata
->fattr
;
1201 calldata
->res
.server
= server
;
1203 status
= nfs4_call_async(server
->client
, &nfs4_close_ops
, calldata
);
1207 nfs_free_seqid(calldata
->arg
.seqid
);
1214 static void nfs4_intent_set_file(struct nameidata
*nd
, struct dentry
*dentry
, struct nfs4_state
*state
)
1218 filp
= lookup_instantiate_filp(nd
, dentry
, NULL
);
1219 if (!IS_ERR(filp
)) {
1220 struct nfs_open_context
*ctx
;
1221 ctx
= (struct nfs_open_context
*)filp
->private_data
;
1224 nfs4_close_state(state
, nd
->intent
.open
.flags
);
1228 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1231 struct rpc_cred
*cred
;
1232 struct nfs4_state
*state
;
1235 if (nd
->flags
& LOOKUP_CREATE
) {
1236 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1237 attr
.ia_valid
= ATTR_MODE
;
1238 if (!IS_POSIXACL(dir
))
1239 attr
.ia_mode
&= ~current
->fs
->umask
;
1242 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1245 cred
= rpcauth_lookupcred(NFS_SERVER(dir
)->client
->cl_auth
, 0);
1247 return (struct dentry
*)cred
;
1248 state
= nfs4_do_open(dir
, dentry
, nd
->intent
.open
.flags
, &attr
, cred
);
1250 if (IS_ERR(state
)) {
1251 if (PTR_ERR(state
) == -ENOENT
)
1252 d_add(dentry
, NULL
);
1253 return (struct dentry
*)state
;
1255 res
= d_add_unique(dentry
, igrab(state
->inode
));
1258 nfs4_intent_set_file(nd
, dentry
, state
);
1263 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1265 struct rpc_cred
*cred
;
1266 struct nfs4_state
*state
;
1268 cred
= rpcauth_lookupcred(NFS_SERVER(dir
)->client
->cl_auth
, 0);
1270 return PTR_ERR(cred
);
1271 state
= nfs4_open_delegated(dentry
->d_inode
, openflags
, cred
);
1273 state
= nfs4_do_open(dir
, dentry
, openflags
, NULL
, cred
);
1275 if (IS_ERR(state
)) {
1276 switch (PTR_ERR(state
)) {
1282 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1285 if (dentry
->d_inode
== NULL
)
1290 if (state
->inode
== dentry
->d_inode
) {
1291 nfs4_intent_set_file(nd
, dentry
, state
);
1294 nfs4_close_state(state
, openflags
);
1301 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1303 struct nfs4_server_caps_res res
= {};
1304 struct rpc_message msg
= {
1305 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1306 .rpc_argp
= fhandle
,
1311 status
= rpc_call_sync(server
->client
, &msg
, 0);
1313 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
1314 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
1315 server
->caps
|= NFS_CAP_ACLS
;
1316 if (res
.has_links
!= 0)
1317 server
->caps
|= NFS_CAP_HARDLINKS
;
1318 if (res
.has_symlinks
!= 0)
1319 server
->caps
|= NFS_CAP_SYMLINKS
;
1320 server
->acl_bitmask
= res
.acl_bitmask
;
1325 static int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1327 struct nfs4_exception exception
= { };
1330 err
= nfs4_handle_exception(server
,
1331 _nfs4_server_capabilities(server
, fhandle
),
1333 } while (exception
.retry
);
1337 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1338 struct nfs_fsinfo
*info
)
1340 struct nfs4_lookup_root_arg args
= {
1341 .bitmask
= nfs4_fattr_bitmap
,
1343 struct nfs4_lookup_res res
= {
1345 .fattr
= info
->fattr
,
1348 struct rpc_message msg
= {
1349 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
1353 nfs_fattr_init(info
->fattr
);
1354 return rpc_call_sync(server
->client
, &msg
, 0);
1357 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1358 struct nfs_fsinfo
*info
)
1360 struct nfs4_exception exception
= { };
1363 err
= nfs4_handle_exception(server
,
1364 _nfs4_lookup_root(server
, fhandle
, info
),
1366 } while (exception
.retry
);
1370 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1371 struct nfs_fsinfo
*info
)
1373 struct nfs_fattr
* fattr
= info
->fattr
;
1376 struct nfs4_lookup_arg args
= {
1379 .bitmask
= nfs4_fattr_bitmap
,
1381 struct nfs4_lookup_res res
= {
1386 struct rpc_message msg
= {
1387 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1394 * Now we do a separate LOOKUP for each component of the mount path.
1395 * The LOOKUPs are done separately so that we can conveniently
1396 * catch an ERR_WRONGSEC if it occurs along the way...
1398 status
= nfs4_lookup_root(server
, fhandle
, info
);
1402 p
= server
->mnt_path
;
1404 struct nfs4_exception exception
= { };
1411 while (*p
&& (*p
!= '/'))
1416 nfs_fattr_init(fattr
);
1417 status
= nfs4_handle_exception(server
,
1418 rpc_call_sync(server
->client
, &msg
, 0),
1420 } while (exception
.retry
);
1423 if (status
== -ENOENT
) {
1424 printk(KERN_NOTICE
"NFS: mount path %s does not exist!\n", server
->mnt_path
);
1425 printk(KERN_NOTICE
"NFS: suggestion: try mounting '/' instead.\n");
1430 status
= nfs4_server_capabilities(server
, fhandle
);
1432 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
1434 return nfs4_map_errors(status
);
1437 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1439 struct nfs4_getattr_arg args
= {
1441 .bitmask
= server
->attr_bitmask
,
1443 struct nfs4_getattr_res res
= {
1447 struct rpc_message msg
= {
1448 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
1453 nfs_fattr_init(fattr
);
1454 return rpc_call_sync(server
->client
, &msg
, 0);
1457 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1459 struct nfs4_exception exception
= { };
1462 err
= nfs4_handle_exception(server
,
1463 _nfs4_proc_getattr(server
, fhandle
, fattr
),
1465 } while (exception
.retry
);
1470 * The file is not closed if it is opened due to the a request to change
1471 * the size of the file. The open call will not be needed once the
1472 * VFS layer lookup-intents are implemented.
1474 * Close is called when the inode is destroyed.
1475 * If we haven't opened the file for O_WRONLY, we
1476 * need to in the size_change case to obtain a stateid.
1479 * Because OPEN is always done by name in nfsv4, it is
1480 * possible that we opened a different file by the same
1481 * name. We can recognize this race condition, but we
1482 * can't do anything about it besides returning an error.
1484 * This will be fixed with VFS changes (lookup-intent).
1487 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
1488 struct iattr
*sattr
)
1490 struct rpc_cred
*cred
;
1491 struct inode
*inode
= dentry
->d_inode
;
1492 struct nfs_open_context
*ctx
;
1493 struct nfs4_state
*state
= NULL
;
1496 nfs_fattr_init(fattr
);
1498 cred
= rpcauth_lookupcred(NFS_SERVER(inode
)->client
->cl_auth
, 0);
1500 return PTR_ERR(cred
);
1502 /* Search for an existing open(O_WRITE) file */
1503 ctx
= nfs_find_open_context(inode
, cred
, FMODE_WRITE
);
1507 status
= nfs4_do_setattr(NFS_SERVER(inode
), fattr
,
1508 NFS_FH(inode
), sattr
, state
);
1510 nfs_setattr_update_inode(inode
, sattr
);
1512 put_nfs_open_context(ctx
);
1517 static int _nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
1518 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1521 struct nfs_server
*server
= NFS_SERVER(dir
);
1522 struct nfs4_lookup_arg args
= {
1523 .bitmask
= server
->attr_bitmask
,
1524 .dir_fh
= NFS_FH(dir
),
1527 struct nfs4_lookup_res res
= {
1532 struct rpc_message msg
= {
1533 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1538 nfs_fattr_init(fattr
);
1540 dprintk("NFS call lookup %s\n", name
->name
);
1541 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
1542 dprintk("NFS reply lookup: %d\n", status
);
1546 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1548 struct nfs4_exception exception
= { };
1551 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1552 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
1554 } while (exception
.retry
);
1558 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1560 struct nfs4_accessargs args
= {
1561 .fh
= NFS_FH(inode
),
1563 struct nfs4_accessres res
= { 0 };
1564 struct rpc_message msg
= {
1565 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
1568 .rpc_cred
= entry
->cred
,
1570 int mode
= entry
->mask
;
1574 * Determine which access bits we want to ask for...
1576 if (mode
& MAY_READ
)
1577 args
.access
|= NFS4_ACCESS_READ
;
1578 if (S_ISDIR(inode
->i_mode
)) {
1579 if (mode
& MAY_WRITE
)
1580 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
1581 if (mode
& MAY_EXEC
)
1582 args
.access
|= NFS4_ACCESS_LOOKUP
;
1584 if (mode
& MAY_WRITE
)
1585 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
1586 if (mode
& MAY_EXEC
)
1587 args
.access
|= NFS4_ACCESS_EXECUTE
;
1589 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1592 if (res
.access
& NFS4_ACCESS_READ
)
1593 entry
->mask
|= MAY_READ
;
1594 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
1595 entry
->mask
|= MAY_WRITE
;
1596 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
1597 entry
->mask
|= MAY_EXEC
;
1602 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1604 struct nfs4_exception exception
= { };
1607 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1608 _nfs4_proc_access(inode
, entry
),
1610 } while (exception
.retry
);
1615 * TODO: For the time being, we don't try to get any attributes
1616 * along with any of the zero-copy operations READ, READDIR,
1619 * In the case of the first three, we want to put the GETATTR
1620 * after the read-type operation -- this is because it is hard
1621 * to predict the length of a GETATTR response in v4, and thus
1622 * align the READ data correctly. This means that the GETATTR
1623 * may end up partially falling into the page cache, and we should
1624 * shift it into the 'tail' of the xdr_buf before processing.
1625 * To do this efficiently, we need to know the total length
1626 * of data received, which doesn't seem to be available outside
1629 * In the case of WRITE, we also want to put the GETATTR after
1630 * the operation -- in this case because we want to make sure
1631 * we get the post-operation mtime and size. This means that
1632 * we can't use xdr_encode_pages() as written: we need a variant
1633 * of it which would leave room in the 'tail' iovec.
1635 * Both of these changes to the XDR layer would in fact be quite
1636 * minor, but I decided to leave them for a subsequent patch.
1638 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1639 unsigned int pgbase
, unsigned int pglen
)
1641 struct nfs4_readlink args
= {
1642 .fh
= NFS_FH(inode
),
1647 struct rpc_message msg
= {
1648 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
1653 return rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1656 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1657 unsigned int pgbase
, unsigned int pglen
)
1659 struct nfs4_exception exception
= { };
1662 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1663 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
1665 } while (exception
.retry
);
1669 static int _nfs4_proc_read(struct nfs_read_data
*rdata
)
1671 int flags
= rdata
->flags
;
1672 struct inode
*inode
= rdata
->inode
;
1673 struct nfs_fattr
*fattr
= rdata
->res
.fattr
;
1674 struct nfs_server
*server
= NFS_SERVER(inode
);
1675 struct rpc_message msg
= {
1676 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
],
1677 .rpc_argp
= &rdata
->args
,
1678 .rpc_resp
= &rdata
->res
,
1679 .rpc_cred
= rdata
->cred
,
1681 unsigned long timestamp
= jiffies
;
1684 dprintk("NFS call read %d @ %Ld\n", rdata
->args
.count
,
1685 (long long) rdata
->args
.offset
);
1687 nfs_fattr_init(fattr
);
1688 status
= rpc_call_sync(server
->client
, &msg
, flags
);
1690 renew_lease(server
, timestamp
);
1691 dprintk("NFS reply read: %d\n", status
);
1695 static int nfs4_proc_read(struct nfs_read_data
*rdata
)
1697 struct nfs4_exception exception
= { };
1700 err
= nfs4_handle_exception(NFS_SERVER(rdata
->inode
),
1701 _nfs4_proc_read(rdata
),
1703 } while (exception
.retry
);
1707 static int _nfs4_proc_write(struct nfs_write_data
*wdata
)
1709 int rpcflags
= wdata
->flags
;
1710 struct inode
*inode
= wdata
->inode
;
1711 struct nfs_fattr
*fattr
= wdata
->res
.fattr
;
1712 struct nfs_server
*server
= NFS_SERVER(inode
);
1713 struct rpc_message msg
= {
1714 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
],
1715 .rpc_argp
= &wdata
->args
,
1716 .rpc_resp
= &wdata
->res
,
1717 .rpc_cred
= wdata
->cred
,
1721 dprintk("NFS call write %d @ %Ld\n", wdata
->args
.count
,
1722 (long long) wdata
->args
.offset
);
1724 wdata
->args
.bitmask
= server
->attr_bitmask
;
1725 wdata
->res
.server
= server
;
1726 wdata
->timestamp
= jiffies
;
1727 nfs_fattr_init(fattr
);
1728 status
= rpc_call_sync(server
->client
, &msg
, rpcflags
);
1729 dprintk("NFS reply write: %d\n", status
);
1732 renew_lease(server
, wdata
->timestamp
);
1733 nfs_post_op_update_inode(inode
, fattr
);
1734 return wdata
->res
.count
;
1737 static int nfs4_proc_write(struct nfs_write_data
*wdata
)
1739 struct nfs4_exception exception
= { };
1742 err
= nfs4_handle_exception(NFS_SERVER(wdata
->inode
),
1743 _nfs4_proc_write(wdata
),
1745 } while (exception
.retry
);
1749 static int _nfs4_proc_commit(struct nfs_write_data
*cdata
)
1751 struct inode
*inode
= cdata
->inode
;
1752 struct nfs_fattr
*fattr
= cdata
->res
.fattr
;
1753 struct nfs_server
*server
= NFS_SERVER(inode
);
1754 struct rpc_message msg
= {
1755 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
],
1756 .rpc_argp
= &cdata
->args
,
1757 .rpc_resp
= &cdata
->res
,
1758 .rpc_cred
= cdata
->cred
,
1762 dprintk("NFS call commit %d @ %Ld\n", cdata
->args
.count
,
1763 (long long) cdata
->args
.offset
);
1765 cdata
->args
.bitmask
= server
->attr_bitmask
;
1766 cdata
->res
.server
= server
;
1767 cdata
->timestamp
= jiffies
;
1768 nfs_fattr_init(fattr
);
1769 status
= rpc_call_sync(server
->client
, &msg
, 0);
1771 renew_lease(server
, cdata
->timestamp
);
1772 dprintk("NFS reply commit: %d\n", status
);
1774 nfs_post_op_update_inode(inode
, fattr
);
1778 static int nfs4_proc_commit(struct nfs_write_data
*cdata
)
1780 struct nfs4_exception exception
= { };
1783 err
= nfs4_handle_exception(NFS_SERVER(cdata
->inode
),
1784 _nfs4_proc_commit(cdata
),
1786 } while (exception
.retry
);
1792 * We will need to arrange for the VFS layer to provide an atomic open.
1793 * Until then, this create/open method is prone to inefficiency and race
1794 * conditions due to the lookup, create, and open VFS calls from sys_open()
1795 * placed on the wire.
1797 * Given the above sorry state of affairs, I'm simply sending an OPEN.
1798 * The file will be opened again in the subsequent VFS open call
1799 * (nfs4_proc_file_open).
1801 * The open for read will just hang around to be used by any process that
1802 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
1806 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
1807 int flags
, struct nameidata
*nd
)
1809 struct nfs4_state
*state
;
1810 struct rpc_cred
*cred
;
1813 cred
= rpcauth_lookupcred(NFS_SERVER(dir
)->client
->cl_auth
, 0);
1815 status
= PTR_ERR(cred
);
1818 state
= nfs4_do_open(dir
, dentry
, flags
, sattr
, cred
);
1820 if (IS_ERR(state
)) {
1821 status
= PTR_ERR(state
);
1824 d_instantiate(dentry
, igrab(state
->inode
));
1825 if (flags
& O_EXCL
) {
1826 struct nfs_fattr fattr
;
1827 status
= nfs4_do_setattr(NFS_SERVER(dir
), &fattr
,
1828 NFS_FH(state
->inode
), sattr
, state
);
1830 nfs_setattr_update_inode(state
->inode
, sattr
);
1832 if (status
== 0 && nd
!= NULL
&& (nd
->flags
& LOOKUP_OPEN
))
1833 nfs4_intent_set_file(nd
, dentry
, state
);
1835 nfs4_close_state(state
, flags
);
1840 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1842 struct nfs_server
*server
= NFS_SERVER(dir
);
1843 struct nfs4_remove_arg args
= {
1846 .bitmask
= server
->attr_bitmask
,
1848 struct nfs_fattr dir_attr
;
1849 struct nfs4_remove_res res
= {
1851 .dir_attr
= &dir_attr
,
1853 struct rpc_message msg
= {
1854 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
1860 nfs_fattr_init(res
.dir_attr
);
1861 status
= rpc_call_sync(server
->client
, &msg
, 0);
1863 update_changeattr(dir
, &res
.cinfo
);
1864 nfs_post_op_update_inode(dir
, res
.dir_attr
);
1869 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1871 struct nfs4_exception exception
= { };
1874 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1875 _nfs4_proc_remove(dir
, name
),
1877 } while (exception
.retry
);
1881 struct unlink_desc
{
1882 struct nfs4_remove_arg args
;
1883 struct nfs4_remove_res res
;
1884 struct nfs_fattr dir_attr
;
1887 static int nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct dentry
*dir
,
1890 struct nfs_server
*server
= NFS_SERVER(dir
->d_inode
);
1891 struct unlink_desc
*up
;
1893 up
= (struct unlink_desc
*) kmalloc(sizeof(*up
), GFP_KERNEL
);
1897 up
->args
.fh
= NFS_FH(dir
->d_inode
);
1898 up
->args
.name
= name
;
1899 up
->args
.bitmask
= server
->attr_bitmask
;
1900 up
->res
.server
= server
;
1901 up
->res
.dir_attr
= &up
->dir_attr
;
1903 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
1904 msg
->rpc_argp
= &up
->args
;
1905 msg
->rpc_resp
= &up
->res
;
1909 static int nfs4_proc_unlink_done(struct dentry
*dir
, struct rpc_task
*task
)
1911 struct rpc_message
*msg
= &task
->tk_msg
;
1912 struct unlink_desc
*up
;
1914 if (msg
->rpc_resp
!= NULL
) {
1915 up
= container_of(msg
->rpc_resp
, struct unlink_desc
, res
);
1916 update_changeattr(dir
->d_inode
, &up
->res
.cinfo
);
1917 nfs_post_op_update_inode(dir
->d_inode
, up
->res
.dir_attr
);
1919 msg
->rpc_resp
= NULL
;
1920 msg
->rpc_argp
= NULL
;
1925 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1926 struct inode
*new_dir
, struct qstr
*new_name
)
1928 struct nfs_server
*server
= NFS_SERVER(old_dir
);
1929 struct nfs4_rename_arg arg
= {
1930 .old_dir
= NFS_FH(old_dir
),
1931 .new_dir
= NFS_FH(new_dir
),
1932 .old_name
= old_name
,
1933 .new_name
= new_name
,
1934 .bitmask
= server
->attr_bitmask
,
1936 struct nfs_fattr old_fattr
, new_fattr
;
1937 struct nfs4_rename_res res
= {
1939 .old_fattr
= &old_fattr
,
1940 .new_fattr
= &new_fattr
,
1942 struct rpc_message msg
= {
1943 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
1949 nfs_fattr_init(res
.old_fattr
);
1950 nfs_fattr_init(res
.new_fattr
);
1951 status
= rpc_call_sync(server
->client
, &msg
, 0);
1954 update_changeattr(old_dir
, &res
.old_cinfo
);
1955 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
1956 update_changeattr(new_dir
, &res
.new_cinfo
);
1957 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
1962 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1963 struct inode
*new_dir
, struct qstr
*new_name
)
1965 struct nfs4_exception exception
= { };
1968 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
1969 _nfs4_proc_rename(old_dir
, old_name
,
1972 } while (exception
.retry
);
1976 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
1978 struct nfs_server
*server
= NFS_SERVER(inode
);
1979 struct nfs4_link_arg arg
= {
1980 .fh
= NFS_FH(inode
),
1981 .dir_fh
= NFS_FH(dir
),
1983 .bitmask
= server
->attr_bitmask
,
1985 struct nfs_fattr fattr
, dir_attr
;
1986 struct nfs4_link_res res
= {
1989 .dir_attr
= &dir_attr
,
1991 struct rpc_message msg
= {
1992 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
1998 nfs_fattr_init(res
.fattr
);
1999 nfs_fattr_init(res
.dir_attr
);
2000 status
= rpc_call_sync(server
->client
, &msg
, 0);
2002 update_changeattr(dir
, &res
.cinfo
);
2003 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2004 nfs_refresh_inode(inode
, res
.fattr
);
2010 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2012 struct nfs4_exception exception
= { };
2015 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2016 _nfs4_proc_link(inode
, dir
, name
),
2018 } while (exception
.retry
);
2022 static int _nfs4_proc_symlink(struct inode
*dir
, struct qstr
*name
,
2023 struct qstr
*path
, struct iattr
*sattr
, struct nfs_fh
*fhandle
,
2024 struct nfs_fattr
*fattr
)
2026 struct nfs_server
*server
= NFS_SERVER(dir
);
2027 struct nfs_fattr dir_fattr
;
2028 struct nfs4_create_arg arg
= {
2029 .dir_fh
= NFS_FH(dir
),
2034 .bitmask
= server
->attr_bitmask
,
2036 struct nfs4_create_res res
= {
2040 .dir_fattr
= &dir_fattr
,
2042 struct rpc_message msg
= {
2043 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
],
2049 if (path
->len
> NFS4_MAXPATHLEN
)
2050 return -ENAMETOOLONG
;
2051 arg
.u
.symlink
= path
;
2052 nfs_fattr_init(fattr
);
2053 nfs_fattr_init(&dir_fattr
);
2055 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2057 update_changeattr(dir
, &res
.dir_cinfo
);
2058 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2062 static int nfs4_proc_symlink(struct inode
*dir
, struct qstr
*name
,
2063 struct qstr
*path
, struct iattr
*sattr
, struct nfs_fh
*fhandle
,
2064 struct nfs_fattr
*fattr
)
2066 struct nfs4_exception exception
= { };
2069 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2070 _nfs4_proc_symlink(dir
, name
, path
, sattr
,
2073 } while (exception
.retry
);
2077 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2078 struct iattr
*sattr
)
2080 struct nfs_server
*server
= NFS_SERVER(dir
);
2081 struct nfs_fh fhandle
;
2082 struct nfs_fattr fattr
, dir_fattr
;
2083 struct nfs4_create_arg arg
= {
2084 .dir_fh
= NFS_FH(dir
),
2086 .name
= &dentry
->d_name
,
2089 .bitmask
= server
->attr_bitmask
,
2091 struct nfs4_create_res res
= {
2095 .dir_fattr
= &dir_fattr
,
2097 struct rpc_message msg
= {
2098 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2104 nfs_fattr_init(&fattr
);
2105 nfs_fattr_init(&dir_fattr
);
2107 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2109 update_changeattr(dir
, &res
.dir_cinfo
);
2110 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2111 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2116 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2117 struct iattr
*sattr
)
2119 struct nfs4_exception exception
= { };
2122 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2123 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2125 } while (exception
.retry
);
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 inode
*dir
= dentry
->d_inode
;
2133 struct nfs4_readdir_arg args
= {
2138 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2140 struct nfs4_readdir_res res
;
2141 struct rpc_message msg
= {
2142 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2149 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__
,
2150 dentry
->d_parent
->d_name
.name
,
2151 dentry
->d_name
.name
,
2152 (unsigned long long)cookie
);
2154 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2155 res
.pgbase
= args
.pgbase
;
2156 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2158 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2160 dprintk("%s: returns %d\n", __FUNCTION__
, status
);
2164 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2165 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2167 struct nfs4_exception exception
= { };
2170 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2171 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2174 } while (exception
.retry
);
2178 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2179 struct iattr
*sattr
, dev_t rdev
)
2181 struct nfs_server
*server
= NFS_SERVER(dir
);
2183 struct nfs_fattr fattr
, dir_fattr
;
2184 struct nfs4_create_arg arg
= {
2185 .dir_fh
= NFS_FH(dir
),
2187 .name
= &dentry
->d_name
,
2189 .bitmask
= server
->attr_bitmask
,
2191 struct nfs4_create_res res
= {
2195 .dir_fattr
= &dir_fattr
,
2197 struct rpc_message msg
= {
2198 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2203 int mode
= sattr
->ia_mode
;
2205 nfs_fattr_init(&fattr
);
2206 nfs_fattr_init(&dir_fattr
);
2208 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2209 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2211 arg
.ftype
= NF4FIFO
;
2212 else if (S_ISBLK(mode
)) {
2214 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2215 arg
.u
.device
.specdata2
= MINOR(rdev
);
2217 else if (S_ISCHR(mode
)) {
2219 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2220 arg
.u
.device
.specdata2
= MINOR(rdev
);
2223 arg
.ftype
= NF4SOCK
;
2225 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2227 update_changeattr(dir
, &res
.dir_cinfo
);
2228 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2229 status
= nfs_instantiate(dentry
, &fh
, &fattr
);
2234 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2235 struct iattr
*sattr
, dev_t rdev
)
2237 struct nfs4_exception exception
= { };
2240 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2241 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2243 } while (exception
.retry
);
2247 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2248 struct nfs_fsstat
*fsstat
)
2250 struct nfs4_statfs_arg args
= {
2252 .bitmask
= server
->attr_bitmask
,
2254 struct rpc_message msg
= {
2255 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2260 nfs_fattr_init(fsstat
->fattr
);
2261 return rpc_call_sync(server
->client
, &msg
, 0);
2264 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2266 struct nfs4_exception exception
= { };
2269 err
= nfs4_handle_exception(server
,
2270 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2272 } while (exception
.retry
);
2276 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2277 struct nfs_fsinfo
*fsinfo
)
2279 struct nfs4_fsinfo_arg args
= {
2281 .bitmask
= server
->attr_bitmask
,
2283 struct rpc_message msg
= {
2284 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2289 return rpc_call_sync(server
->client
, &msg
, 0);
2292 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2294 struct nfs4_exception exception
= { };
2298 err
= nfs4_handle_exception(server
,
2299 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2301 } while (exception
.retry
);
2305 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2307 nfs_fattr_init(fsinfo
->fattr
);
2308 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2311 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2312 struct nfs_pathconf
*pathconf
)
2314 struct nfs4_pathconf_arg args
= {
2316 .bitmask
= server
->attr_bitmask
,
2318 struct rpc_message msg
= {
2319 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2321 .rpc_resp
= pathconf
,
2324 /* None of the pathconf attributes are mandatory to implement */
2325 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2326 memset(pathconf
, 0, sizeof(*pathconf
));
2330 nfs_fattr_init(pathconf
->fattr
);
2331 return rpc_call_sync(server
->client
, &msg
, 0);
2334 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2335 struct nfs_pathconf
*pathconf
)
2337 struct nfs4_exception exception
= { };
2341 err
= nfs4_handle_exception(server
,
2342 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2344 } while (exception
.retry
);
2348 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2350 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2352 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
2353 rpc_restart_call(task
);
2356 if (task
->tk_status
> 0)
2357 renew_lease(server
, data
->timestamp
);
2361 static void nfs4_proc_read_setup(struct nfs_read_data
*data
)
2363 struct rpc_message msg
= {
2364 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
],
2365 .rpc_argp
= &data
->args
,
2366 .rpc_resp
= &data
->res
,
2367 .rpc_cred
= data
->cred
,
2370 data
->timestamp
= jiffies
;
2372 rpc_call_setup(&data
->task
, &msg
, 0);
2375 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2377 struct inode
*inode
= data
->inode
;
2379 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2380 rpc_restart_call(task
);
2383 if (task
->tk_status
>= 0) {
2384 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2385 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2390 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, int how
)
2392 struct rpc_message msg
= {
2393 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
],
2394 .rpc_argp
= &data
->args
,
2395 .rpc_resp
= &data
->res
,
2396 .rpc_cred
= data
->cred
,
2398 struct inode
*inode
= data
->inode
;
2399 struct nfs_server
*server
= NFS_SERVER(inode
);
2402 if (how
& FLUSH_STABLE
) {
2403 if (!NFS_I(inode
)->ncommit
)
2404 stable
= NFS_FILE_SYNC
;
2406 stable
= NFS_DATA_SYNC
;
2408 stable
= NFS_UNSTABLE
;
2409 data
->args
.stable
= stable
;
2410 data
->args
.bitmask
= server
->attr_bitmask
;
2411 data
->res
.server
= server
;
2413 data
->timestamp
= jiffies
;
2415 /* Finalize the task. */
2416 rpc_call_setup(&data
->task
, &msg
, 0);
2419 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2421 struct inode
*inode
= data
->inode
;
2423 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2424 rpc_restart_call(task
);
2427 if (task
->tk_status
>= 0)
2428 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2432 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, int how
)
2434 struct rpc_message msg
= {
2435 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
],
2436 .rpc_argp
= &data
->args
,
2437 .rpc_resp
= &data
->res
,
2438 .rpc_cred
= data
->cred
,
2440 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2442 data
->args
.bitmask
= server
->attr_bitmask
;
2443 data
->res
.server
= server
;
2445 rpc_call_setup(&data
->task
, &msg
, 0);
2449 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
2450 * standalone procedure for queueing an asynchronous RENEW.
2452 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
2454 struct nfs4_client
*clp
= (struct nfs4_client
*)task
->tk_msg
.rpc_argp
;
2455 unsigned long timestamp
= (unsigned long)data
;
2457 if (task
->tk_status
< 0) {
2458 switch (task
->tk_status
) {
2459 case -NFS4ERR_STALE_CLIENTID
:
2460 case -NFS4ERR_EXPIRED
:
2461 case -NFS4ERR_CB_PATH_DOWN
:
2462 nfs4_schedule_state_recovery(clp
);
2466 spin_lock(&clp
->cl_lock
);
2467 if (time_before(clp
->cl_last_renewal
,timestamp
))
2468 clp
->cl_last_renewal
= timestamp
;
2469 spin_unlock(&clp
->cl_lock
);
2472 static const struct rpc_call_ops nfs4_renew_ops
= {
2473 .rpc_call_done
= nfs4_renew_done
,
2476 int nfs4_proc_async_renew(struct nfs4_client
*clp
, struct rpc_cred
*cred
)
2478 struct rpc_message msg
= {
2479 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2484 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
2485 &nfs4_renew_ops
, (void *)jiffies
);
2488 int nfs4_proc_renew(struct nfs4_client
*clp
, struct rpc_cred
*cred
)
2490 struct rpc_message msg
= {
2491 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2495 unsigned long now
= jiffies
;
2498 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2501 spin_lock(&clp
->cl_lock
);
2502 if (time_before(clp
->cl_last_renewal
,now
))
2503 clp
->cl_last_renewal
= now
;
2504 spin_unlock(&clp
->cl_lock
);
2508 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
2510 return (server
->caps
& NFS_CAP_ACLS
)
2511 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2512 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
2515 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
2516 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
2519 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
2521 static void buf_to_pages(const void *buf
, size_t buflen
,
2522 struct page
**pages
, unsigned int *pgbase
)
2524 const void *p
= buf
;
2526 *pgbase
= offset_in_page(buf
);
2528 while (p
< buf
+ buflen
) {
2529 *(pages
++) = virt_to_page(p
);
2530 p
+= PAGE_CACHE_SIZE
;
2534 struct nfs4_cached_acl
{
2540 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
2542 struct nfs_inode
*nfsi
= NFS_I(inode
);
2544 spin_lock(&inode
->i_lock
);
2545 kfree(nfsi
->nfs4_acl
);
2546 nfsi
->nfs4_acl
= acl
;
2547 spin_unlock(&inode
->i_lock
);
2550 static void nfs4_zap_acl_attr(struct inode
*inode
)
2552 nfs4_set_cached_acl(inode
, NULL
);
2555 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
2557 struct nfs_inode
*nfsi
= NFS_I(inode
);
2558 struct nfs4_cached_acl
*acl
;
2561 spin_lock(&inode
->i_lock
);
2562 acl
= nfsi
->nfs4_acl
;
2565 if (buf
== NULL
) /* user is just asking for length */
2567 if (acl
->cached
== 0)
2569 ret
= -ERANGE
; /* see getxattr(2) man page */
2570 if (acl
->len
> buflen
)
2572 memcpy(buf
, acl
->data
, acl
->len
);
2576 spin_unlock(&inode
->i_lock
);
2580 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
2582 struct nfs4_cached_acl
*acl
;
2584 if (buf
&& acl_len
<= PAGE_SIZE
) {
2585 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
2589 memcpy(acl
->data
, buf
, acl_len
);
2591 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
2598 nfs4_set_cached_acl(inode
, acl
);
2601 static inline ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2603 struct page
*pages
[NFS4ACL_MAXPAGES
];
2604 struct nfs_getaclargs args
= {
2605 .fh
= NFS_FH(inode
),
2609 size_t resp_len
= buflen
;
2611 struct rpc_message msg
= {
2612 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
2614 .rpc_resp
= &resp_len
,
2616 struct page
*localpage
= NULL
;
2619 if (buflen
< PAGE_SIZE
) {
2620 /* As long as we're doing a round trip to the server anyway,
2621 * let's be prepared for a page of acl data. */
2622 localpage
= alloc_page(GFP_KERNEL
);
2623 resp_buf
= page_address(localpage
);
2624 if (localpage
== NULL
)
2626 args
.acl_pages
[0] = localpage
;
2627 args
.acl_pgbase
= 0;
2628 resp_len
= args
.acl_len
= PAGE_SIZE
;
2631 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
2633 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2636 if (resp_len
> args
.acl_len
)
2637 nfs4_write_cached_acl(inode
, NULL
, resp_len
);
2639 nfs4_write_cached_acl(inode
, resp_buf
, resp_len
);
2642 if (resp_len
> buflen
)
2645 memcpy(buf
, resp_buf
, resp_len
);
2650 __free_page(localpage
);
2654 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
2656 struct nfs_server
*server
= NFS_SERVER(inode
);
2659 if (!nfs4_server_supports_acls(server
))
2661 ret
= nfs_revalidate_inode(server
, inode
);
2664 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
2667 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
2670 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2672 struct nfs_server
*server
= NFS_SERVER(inode
);
2673 struct page
*pages
[NFS4ACL_MAXPAGES
];
2674 struct nfs_setaclargs arg
= {
2675 .fh
= NFS_FH(inode
),
2679 struct rpc_message msg
= {
2680 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
2686 if (!nfs4_server_supports_acls(server
))
2688 nfs_inode_return_delegation(inode
);
2689 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
2690 ret
= rpc_call_sync(NFS_SERVER(inode
)->client
, &msg
, 0);
2692 nfs4_write_cached_acl(inode
, buf
, buflen
);
2697 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
)
2699 struct nfs4_client
*clp
= server
->nfs4_state
;
2701 if (!clp
|| task
->tk_status
>= 0)
2703 switch(task
->tk_status
) {
2704 case -NFS4ERR_STALE_CLIENTID
:
2705 case -NFS4ERR_STALE_STATEID
:
2706 case -NFS4ERR_EXPIRED
:
2707 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
, NULL
);
2708 nfs4_schedule_state_recovery(clp
);
2709 if (test_bit(NFS4CLNT_STATE_RECOVER
, &clp
->cl_state
) == 0)
2710 rpc_wake_up_task(task
);
2711 task
->tk_status
= 0;
2713 case -NFS4ERR_DELAY
:
2714 nfs_inc_server_stats((struct nfs_server
*) server
,
2716 case -NFS4ERR_GRACE
:
2717 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
2718 task
->tk_status
= 0;
2720 case -NFS4ERR_OLD_STATEID
:
2721 task
->tk_status
= 0;
2724 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
2728 static int nfs4_wait_bit_interruptible(void *word
)
2730 if (signal_pending(current
))
2731 return -ERESTARTSYS
;
2736 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs4_client
*clp
)
2743 rpc_clnt_sigmask(clnt
, &oldset
);
2744 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_STATE_RECOVER
,
2745 nfs4_wait_bit_interruptible
,
2746 TASK_INTERRUPTIBLE
);
2747 rpc_clnt_sigunmask(clnt
, &oldset
);
2751 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
2759 *timeout
= NFS4_POLL_RETRY_MIN
;
2760 if (*timeout
> NFS4_POLL_RETRY_MAX
)
2761 *timeout
= NFS4_POLL_RETRY_MAX
;
2762 rpc_clnt_sigmask(clnt
, &oldset
);
2763 if (clnt
->cl_intr
) {
2764 schedule_timeout_interruptible(*timeout
);
2768 schedule_timeout_uninterruptible(*timeout
);
2769 rpc_clnt_sigunmask(clnt
, &oldset
);
2774 /* This is the error handling routine for processes that are allowed
2777 int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
2779 struct nfs4_client
*clp
= server
->nfs4_state
;
2780 int ret
= errorcode
;
2782 exception
->retry
= 0;
2786 case -NFS4ERR_STALE_CLIENTID
:
2787 case -NFS4ERR_STALE_STATEID
:
2788 case -NFS4ERR_EXPIRED
:
2789 nfs4_schedule_state_recovery(clp
);
2790 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
2792 exception
->retry
= 1;
2794 case -NFS4ERR_GRACE
:
2795 case -NFS4ERR_DELAY
:
2796 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
2799 case -NFS4ERR_OLD_STATEID
:
2800 exception
->retry
= 1;
2802 /* We failed to handle the error */
2803 return nfs4_map_errors(ret
);
2806 int nfs4_proc_setclientid(struct nfs4_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
2808 nfs4_verifier sc_verifier
;
2809 struct nfs4_setclientid setclientid
= {
2810 .sc_verifier
= &sc_verifier
,
2813 struct rpc_message msg
= {
2814 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
2815 .rpc_argp
= &setclientid
,
2823 p
= (u32
*)sc_verifier
.data
;
2824 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
2825 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
2828 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
2829 sizeof(setclientid
.sc_name
), "%s/%u.%u.%u.%u %s %u",
2830 clp
->cl_ipaddr
, NIPQUAD(clp
->cl_addr
.s_addr
),
2831 cred
->cr_ops
->cr_name
,
2832 clp
->cl_id_uniquifier
);
2833 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
2834 sizeof(setclientid
.sc_netid
), "tcp");
2835 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
2836 sizeof(setclientid
.sc_uaddr
), "%s.%d.%d",
2837 clp
->cl_ipaddr
, port
>> 8, port
& 255);
2839 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2840 if (status
!= -NFS4ERR_CLID_INUSE
)
2845 ssleep(clp
->cl_lease_time
+ 1);
2847 if (++clp
->cl_id_uniquifier
== 0)
2854 nfs4_proc_setclientid_confirm(struct nfs4_client
*clp
, struct rpc_cred
*cred
)
2856 struct nfs_fsinfo fsinfo
;
2857 struct rpc_message msg
= {
2858 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
2860 .rpc_resp
= &fsinfo
,
2867 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2869 spin_lock(&clp
->cl_lock
);
2870 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
2871 clp
->cl_last_renewal
= now
;
2872 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
2873 spin_unlock(&clp
->cl_lock
);
2878 struct nfs4_delegreturndata
{
2879 struct nfs4_delegreturnargs args
;
2880 struct nfs4_delegreturnres res
;
2882 nfs4_stateid stateid
;
2883 struct rpc_cred
*cred
;
2884 unsigned long timestamp
;
2885 struct nfs_fattr fattr
;
2889 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *calldata
)
2891 struct nfs4_delegreturndata
*data
= calldata
;
2892 struct rpc_message msg
= {
2893 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
2894 .rpc_argp
= &data
->args
,
2895 .rpc_resp
= &data
->res
,
2896 .rpc_cred
= data
->cred
,
2898 nfs_fattr_init(data
->res
.fattr
);
2899 rpc_call_setup(task
, &msg
, 0);
2902 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
2904 struct nfs4_delegreturndata
*data
= calldata
;
2905 data
->rpc_status
= task
->tk_status
;
2906 if (data
->rpc_status
== 0)
2907 renew_lease(data
->res
.server
, data
->timestamp
);
2910 static void nfs4_delegreturn_release(void *calldata
)
2912 struct nfs4_delegreturndata
*data
= calldata
;
2914 put_rpccred(data
->cred
);
2918 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
2919 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
2920 .rpc_call_done
= nfs4_delegreturn_done
,
2921 .rpc_release
= nfs4_delegreturn_release
,
2924 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2926 struct nfs4_delegreturndata
*data
;
2927 struct nfs_server
*server
= NFS_SERVER(inode
);
2928 struct rpc_task
*task
;
2931 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
2934 data
->args
.fhandle
= &data
->fh
;
2935 data
->args
.stateid
= &data
->stateid
;
2936 data
->args
.bitmask
= server
->attr_bitmask
;
2937 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
2938 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
2939 data
->res
.fattr
= &data
->fattr
;
2940 data
->res
.server
= server
;
2941 data
->cred
= get_rpccred(cred
);
2942 data
->timestamp
= jiffies
;
2943 data
->rpc_status
= 0;
2945 task
= rpc_run_task(NFS_CLIENT(inode
), RPC_TASK_ASYNC
, &nfs4_delegreturn_ops
, data
);
2947 nfs4_delegreturn_release(data
);
2948 return PTR_ERR(task
);
2950 status
= nfs4_wait_for_completion_rpc_task(task
);
2952 status
= data
->rpc_status
;
2954 nfs_post_op_update_inode(inode
, &data
->fattr
);
2956 rpc_release_task(task
);
2960 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2962 struct nfs_server
*server
= NFS_SERVER(inode
);
2963 struct nfs4_exception exception
= { };
2966 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
);
2968 case -NFS4ERR_STALE_STATEID
:
2969 case -NFS4ERR_EXPIRED
:
2970 nfs4_schedule_state_recovery(server
->nfs4_state
);
2974 err
= nfs4_handle_exception(server
, err
, &exception
);
2975 } while (exception
.retry
);
2979 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
2980 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
2983 * sleep, with exponential backoff, and retry the LOCK operation.
2985 static unsigned long
2986 nfs4_set_lock_task_retry(unsigned long timeout
)
2988 schedule_timeout_interruptible(timeout
);
2990 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
2991 return NFS4_LOCK_MAXTIMEOUT
;
2995 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
2997 struct inode
*inode
= state
->inode
;
2998 struct nfs_server
*server
= NFS_SERVER(inode
);
2999 struct nfs4_client
*clp
= server
->nfs4_state
;
3000 struct nfs_lockt_args arg
= {
3001 .fh
= NFS_FH(inode
),
3004 struct nfs_lockt_res res
= {
3007 struct rpc_message msg
= {
3008 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3011 .rpc_cred
= state
->owner
->so_cred
,
3013 struct nfs4_lock_state
*lsp
;
3016 down_read(&clp
->cl_sem
);
3017 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3018 status
= nfs4_set_lock_state(state
, request
);
3021 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3022 arg
.lock_owner
.id
= lsp
->ls_id
;
3023 status
= rpc_call_sync(server
->client
, &msg
, 0);
3026 request
->fl_type
= F_UNLCK
;
3028 case -NFS4ERR_DENIED
:
3032 up_read(&clp
->cl_sem
);
3036 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3038 struct nfs4_exception exception
= { };
3042 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3043 _nfs4_proc_getlk(state
, cmd
, request
),
3045 } while (exception
.retry
);
3049 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3052 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3054 res
= posix_lock_file_wait(file
, fl
);
3057 res
= flock_lock_file_wait(file
, fl
);
3063 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n",
3068 struct nfs4_unlockdata
{
3069 struct nfs_locku_args arg
;
3070 struct nfs_locku_res res
;
3071 struct nfs4_lock_state
*lsp
;
3072 struct nfs_open_context
*ctx
;
3073 struct file_lock fl
;
3074 const struct nfs_server
*server
;
3075 unsigned long timestamp
;
3078 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3079 struct nfs_open_context
*ctx
,
3080 struct nfs4_lock_state
*lsp
,
3081 struct nfs_seqid
*seqid
)
3083 struct nfs4_unlockdata
*p
;
3084 struct inode
*inode
= lsp
->ls_state
->inode
;
3086 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
3089 p
->arg
.fh
= NFS_FH(inode
);
3091 p
->arg
.seqid
= seqid
;
3092 p
->arg
.stateid
= &lsp
->ls_stateid
;
3094 atomic_inc(&lsp
->ls_count
);
3095 /* Ensure we don't close file until we're done freeing locks! */
3096 p
->ctx
= get_nfs_open_context(ctx
);
3097 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3098 p
->server
= NFS_SERVER(inode
);
3102 static void nfs4_locku_release_calldata(void *data
)
3104 struct nfs4_unlockdata
*calldata
= data
;
3105 nfs_free_seqid(calldata
->arg
.seqid
);
3106 nfs4_put_lock_state(calldata
->lsp
);
3107 put_nfs_open_context(calldata
->ctx
);
3111 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3113 struct nfs4_unlockdata
*calldata
= data
;
3115 if (RPC_ASSASSINATED(task
))
3117 nfs_increment_lock_seqid(task
->tk_status
, calldata
->arg
.seqid
);
3118 switch (task
->tk_status
) {
3120 memcpy(calldata
->lsp
->ls_stateid
.data
,
3121 calldata
->res
.stateid
.data
,
3122 sizeof(calldata
->lsp
->ls_stateid
.data
));
3123 renew_lease(calldata
->server
, calldata
->timestamp
);
3125 case -NFS4ERR_STALE_STATEID
:
3126 case -NFS4ERR_EXPIRED
:
3127 nfs4_schedule_state_recovery(calldata
->server
->nfs4_state
);
3130 if (nfs4_async_handle_error(task
, calldata
->server
) == -EAGAIN
) {
3131 rpc_restart_call(task
);
3136 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3138 struct nfs4_unlockdata
*calldata
= data
;
3139 struct rpc_message msg
= {
3140 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3141 .rpc_argp
= &calldata
->arg
,
3142 .rpc_resp
= &calldata
->res
,
3143 .rpc_cred
= calldata
->lsp
->ls_state
->owner
->so_cred
,
3146 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3148 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3149 /* Note: exit _without_ running nfs4_locku_done */
3150 task
->tk_action
= NULL
;
3153 calldata
->timestamp
= jiffies
;
3154 rpc_call_setup(task
, &msg
, 0);
3157 static const struct rpc_call_ops nfs4_locku_ops
= {
3158 .rpc_call_prepare
= nfs4_locku_prepare
,
3159 .rpc_call_done
= nfs4_locku_done
,
3160 .rpc_release
= nfs4_locku_release_calldata
,
3163 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3164 struct nfs_open_context
*ctx
,
3165 struct nfs4_lock_state
*lsp
,
3166 struct nfs_seqid
*seqid
)
3168 struct nfs4_unlockdata
*data
;
3169 struct rpc_task
*task
;
3171 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3173 nfs_free_seqid(seqid
);
3174 return ERR_PTR(-ENOMEM
);
3177 /* Unlock _before_ we do the RPC call */
3178 do_vfs_lock(fl
->fl_file
, fl
);
3179 task
= rpc_run_task(NFS_CLIENT(lsp
->ls_state
->inode
), RPC_TASK_ASYNC
, &nfs4_locku_ops
, data
);
3181 nfs4_locku_release_calldata(data
);
3185 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3187 struct nfs_seqid
*seqid
;
3188 struct nfs4_lock_state
*lsp
;
3189 struct rpc_task
*task
;
3192 /* Is this a delegated lock? */
3193 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3195 /* Is this open_owner holding any locks on the server? */
3196 if (test_bit(LK_STATE_IN_USE
, &state
->flags
) == 0)
3199 status
= nfs4_set_lock_state(state
, request
);
3202 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3204 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3207 task
= nfs4_do_unlck(request
, request
->fl_file
->private_data
, lsp
, seqid
);
3208 status
= PTR_ERR(task
);
3211 status
= nfs4_wait_for_completion_rpc_task(task
);
3212 rpc_release_task(task
);
3215 do_vfs_lock(request
->fl_file
, request
);
3219 struct nfs4_lockdata
{
3220 struct nfs_lock_args arg
;
3221 struct nfs_lock_res res
;
3222 struct nfs4_lock_state
*lsp
;
3223 struct nfs_open_context
*ctx
;
3224 struct file_lock fl
;
3225 unsigned long timestamp
;
3230 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3231 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3233 struct nfs4_lockdata
*p
;
3234 struct inode
*inode
= lsp
->ls_state
->inode
;
3235 struct nfs_server
*server
= NFS_SERVER(inode
);
3237 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3241 p
->arg
.fh
= NFS_FH(inode
);
3243 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3244 if (p
->arg
.lock_seqid
== NULL
)
3246 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3247 p
->arg
.lock_owner
.clientid
= server
->nfs4_state
->cl_clientid
;
3248 p
->arg
.lock_owner
.id
= lsp
->ls_id
;
3250 atomic_inc(&lsp
->ls_count
);
3251 p
->ctx
= get_nfs_open_context(ctx
);
3252 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3259 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3261 struct nfs4_lockdata
*data
= calldata
;
3262 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3263 struct nfs4_state_owner
*sp
= state
->owner
;
3264 struct rpc_message msg
= {
3265 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3266 .rpc_argp
= &data
->arg
,
3267 .rpc_resp
= &data
->res
,
3268 .rpc_cred
= sp
->so_cred
,
3271 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3273 dprintk("%s: begin!\n", __FUNCTION__
);
3274 /* Do we need to do an open_to_lock_owner? */
3275 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3276 data
->arg
.open_seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
3277 if (data
->arg
.open_seqid
== NULL
) {
3278 data
->rpc_status
= -ENOMEM
;
3279 task
->tk_action
= NULL
;
3282 data
->arg
.open_stateid
= &state
->stateid
;
3283 data
->arg
.new_lock_owner
= 1;
3285 data
->timestamp
= jiffies
;
3286 rpc_call_setup(task
, &msg
, 0);
3288 dprintk("%s: done!, ret = %d\n", __FUNCTION__
, data
->rpc_status
);
3291 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3293 struct nfs4_lockdata
*data
= calldata
;
3295 dprintk("%s: begin!\n", __FUNCTION__
);
3297 data
->rpc_status
= task
->tk_status
;
3298 if (RPC_ASSASSINATED(task
))
3300 if (data
->arg
.new_lock_owner
!= 0) {
3301 nfs_increment_open_seqid(data
->rpc_status
, data
->arg
.open_seqid
);
3302 if (data
->rpc_status
== 0)
3303 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3307 if (data
->rpc_status
== 0) {
3308 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3309 sizeof(data
->lsp
->ls_stateid
.data
));
3310 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3311 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
3313 nfs_increment_lock_seqid(data
->rpc_status
, data
->arg
.lock_seqid
);
3315 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, data
->rpc_status
);
3318 static void nfs4_lock_release(void *calldata
)
3320 struct nfs4_lockdata
*data
= calldata
;
3322 dprintk("%s: begin!\n", __FUNCTION__
);
3323 if (data
->arg
.open_seqid
!= NULL
)
3324 nfs_free_seqid(data
->arg
.open_seqid
);
3325 if (data
->cancelled
!= 0) {
3326 struct rpc_task
*task
;
3327 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3328 data
->arg
.lock_seqid
);
3330 rpc_release_task(task
);
3331 dprintk("%s: cancelling lock!\n", __FUNCTION__
);
3333 nfs_free_seqid(data
->arg
.lock_seqid
);
3334 nfs4_put_lock_state(data
->lsp
);
3335 put_nfs_open_context(data
->ctx
);
3337 dprintk("%s: done!\n", __FUNCTION__
);
3340 static const struct rpc_call_ops nfs4_lock_ops
= {
3341 .rpc_call_prepare
= nfs4_lock_prepare
,
3342 .rpc_call_done
= nfs4_lock_done
,
3343 .rpc_release
= nfs4_lock_release
,
3346 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3348 struct nfs4_lockdata
*data
;
3349 struct rpc_task
*task
;
3352 dprintk("%s: begin!\n", __FUNCTION__
);
3353 data
= nfs4_alloc_lockdata(fl
, fl
->fl_file
->private_data
,
3354 fl
->fl_u
.nfs4_fl
.owner
);
3358 data
->arg
.block
= 1;
3360 data
->arg
.reclaim
= 1;
3361 task
= rpc_run_task(NFS_CLIENT(state
->inode
), RPC_TASK_ASYNC
,
3362 &nfs4_lock_ops
, data
);
3364 nfs4_lock_release(data
);
3365 return PTR_ERR(task
);
3367 ret
= nfs4_wait_for_completion_rpc_task(task
);
3369 ret
= data
->rpc_status
;
3370 if (ret
== -NFS4ERR_DENIED
)
3373 data
->cancelled
= 1;
3374 rpc_release_task(task
);
3375 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, ret
);
3379 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
3381 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3382 struct nfs4_exception exception
= { };
3385 /* Cache the lock if possible... */
3386 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3389 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
3390 if (err
!= -NFS4ERR_DELAY
)
3392 nfs4_handle_exception(server
, err
, &exception
);
3393 } while (exception
.retry
);
3397 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
3399 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3400 struct nfs4_exception exception
= { };
3403 err
= nfs4_set_lock_state(state
, request
);
3407 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
3408 if (err
!= -NFS4ERR_DELAY
)
3410 nfs4_handle_exception(server
, err
, &exception
);
3411 } while (exception
.retry
);
3415 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3417 struct nfs4_client
*clp
= state
->owner
->so_client
;
3420 /* Is this a delegated open? */
3421 if (NFS_I(state
->inode
)->delegation_state
!= 0) {
3422 /* Yes: cache locks! */
3423 status
= do_vfs_lock(request
->fl_file
, request
);
3424 /* ...but avoid races with delegation recall... */
3425 if (status
< 0 || test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3428 down_read(&clp
->cl_sem
);
3429 status
= nfs4_set_lock_state(state
, request
);
3432 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
3435 /* Note: we always want to sleep here! */
3436 request
->fl_flags
|= FL_SLEEP
;
3437 if (do_vfs_lock(request
->fl_file
, request
) < 0)
3438 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __FUNCTION__
);
3440 up_read(&clp
->cl_sem
);
3444 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3446 struct nfs4_exception exception
= { };
3450 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3451 _nfs4_proc_setlk(state
, cmd
, request
),
3453 } while (exception
.retry
);
3458 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
3460 struct nfs_open_context
*ctx
;
3461 struct nfs4_state
*state
;
3462 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
3465 /* verify open state */
3466 ctx
= (struct nfs_open_context
*)filp
->private_data
;
3469 if (request
->fl_start
< 0 || request
->fl_end
< 0)
3473 return nfs4_proc_getlk(state
, F_GETLK
, request
);
3475 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
3478 if (request
->fl_type
== F_UNLCK
)
3479 return nfs4_proc_unlck(state
, cmd
, request
);
3482 status
= nfs4_proc_setlk(state
, cmd
, request
);
3483 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
3485 timeout
= nfs4_set_lock_task_retry(timeout
);
3486 status
= -ERESTARTSYS
;
3489 } while(status
< 0);
3493 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
3495 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3496 struct nfs4_exception exception
= { };
3499 err
= nfs4_set_lock_state(state
, fl
);
3503 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
3504 if (err
!= -NFS4ERR_DELAY
)
3506 err
= nfs4_handle_exception(server
, err
, &exception
);
3507 } while (exception
.retry
);
3512 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
3514 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
3515 size_t buflen
, int flags
)
3517 struct inode
*inode
= dentry
->d_inode
;
3519 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3522 if (!S_ISREG(inode
->i_mode
) &&
3523 (!S_ISDIR(inode
->i_mode
) || inode
->i_mode
& S_ISVTX
))
3526 return nfs4_proc_set_acl(inode
, buf
, buflen
);
3529 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
3530 * and that's what we'll do for e.g. user attributes that haven't been set.
3531 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
3532 * attributes in kernel-managed attribute namespaces. */
3533 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
3536 struct inode
*inode
= dentry
->d_inode
;
3538 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3541 return nfs4_proc_get_acl(inode
, buf
, buflen
);
3544 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
3546 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
3548 if (buf
&& buflen
< len
)
3551 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
3555 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops
= {
3556 .recover_open
= nfs4_open_reclaim
,
3557 .recover_lock
= nfs4_lock_reclaim
,
3560 struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops
= {
3561 .recover_open
= nfs4_open_expired
,
3562 .recover_lock
= nfs4_lock_expired
,
3565 static struct inode_operations nfs4_file_inode_operations
= {
3566 .permission
= nfs_permission
,
3567 .getattr
= nfs_getattr
,
3568 .setattr
= nfs_setattr
,
3569 .getxattr
= nfs4_getxattr
,
3570 .setxattr
= nfs4_setxattr
,
3571 .listxattr
= nfs4_listxattr
,
3574 struct nfs_rpc_ops nfs_v4_clientops
= {
3575 .version
= 4, /* protocol version */
3576 .dentry_ops
= &nfs4_dentry_operations
,
3577 .dir_inode_ops
= &nfs4_dir_inode_operations
,
3578 .file_inode_ops
= &nfs4_file_inode_operations
,
3579 .getroot
= nfs4_proc_get_root
,
3580 .getattr
= nfs4_proc_getattr
,
3581 .setattr
= nfs4_proc_setattr
,
3582 .lookup
= nfs4_proc_lookup
,
3583 .access
= nfs4_proc_access
,
3584 .readlink
= nfs4_proc_readlink
,
3585 .read
= nfs4_proc_read
,
3586 .write
= nfs4_proc_write
,
3587 .commit
= nfs4_proc_commit
,
3588 .create
= nfs4_proc_create
,
3589 .remove
= nfs4_proc_remove
,
3590 .unlink_setup
= nfs4_proc_unlink_setup
,
3591 .unlink_done
= nfs4_proc_unlink_done
,
3592 .rename
= nfs4_proc_rename
,
3593 .link
= nfs4_proc_link
,
3594 .symlink
= nfs4_proc_symlink
,
3595 .mkdir
= nfs4_proc_mkdir
,
3596 .rmdir
= nfs4_proc_remove
,
3597 .readdir
= nfs4_proc_readdir
,
3598 .mknod
= nfs4_proc_mknod
,
3599 .statfs
= nfs4_proc_statfs
,
3600 .fsinfo
= nfs4_proc_fsinfo
,
3601 .pathconf
= nfs4_proc_pathconf
,
3602 .decode_dirent
= nfs4_decode_dirent
,
3603 .read_setup
= nfs4_proc_read_setup
,
3604 .read_done
= nfs4_read_done
,
3605 .write_setup
= nfs4_proc_write_setup
,
3606 .write_done
= nfs4_write_done
,
3607 .commit_setup
= nfs4_proc_commit_setup
,
3608 .commit_done
= nfs4_commit_done
,
3609 .file_open
= nfs_open
,
3610 .file_release
= nfs_release
,
3611 .lock
= nfs4_proc_lock
,
3612 .clear_acl_cache
= nfs4_zap_acl_attr
,