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
*dir
, struct nfs4_change_info
*cinfo
)
190 struct nfs_inode
*nfsi
= NFS_I(dir
);
192 spin_lock(&dir
->i_lock
);
193 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
194 if (cinfo
->before
== nfsi
->change_attr
&& cinfo
->atomic
)
195 nfsi
->change_attr
= cinfo
->after
;
196 spin_unlock(&dir
->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
);
609 * If rpc_run_task() ends up calling ->rpc_release(), we
610 * want to ensure that it takes the 'error' code path.
612 data
->rpc_status
= -ENOMEM
;
613 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_confirm_ops
, data
);
615 return PTR_ERR(task
);
616 status
= nfs4_wait_for_completion_rpc_task(task
);
621 status
= data
->rpc_status
;
622 rpc_release_task(task
);
626 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
628 struct nfs4_opendata
*data
= calldata
;
629 struct nfs4_state_owner
*sp
= data
->owner
;
630 struct rpc_message msg
= {
631 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
632 .rpc_argp
= &data
->o_arg
,
633 .rpc_resp
= &data
->o_res
,
634 .rpc_cred
= sp
->so_cred
,
637 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
639 /* Update sequence id. */
640 data
->o_arg
.id
= sp
->so_id
;
641 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
642 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
643 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
644 data
->timestamp
= jiffies
;
645 rpc_call_setup(task
, &msg
, 0);
648 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
650 struct nfs4_opendata
*data
= calldata
;
652 data
->rpc_status
= task
->tk_status
;
653 if (RPC_ASSASSINATED(task
))
655 if (task
->tk_status
== 0) {
656 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
660 data
->rpc_status
= -ELOOP
;
663 data
->rpc_status
= -EISDIR
;
666 data
->rpc_status
= -ENOTDIR
;
668 renew_lease(data
->o_res
.server
, data
->timestamp
);
670 nfs_increment_open_seqid(data
->rpc_status
, data
->o_arg
.seqid
);
673 static void nfs4_open_release(void *calldata
)
675 struct nfs4_opendata
*data
= calldata
;
676 struct nfs4_state
*state
= NULL
;
678 /* If this request hasn't been cancelled, do nothing */
679 if (data
->cancelled
== 0)
681 /* In case of error, no cleanup! */
682 if (data
->rpc_status
!= 0)
684 /* In case we need an open_confirm, no cleanup! */
685 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
687 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
688 state
= nfs4_opendata_to_nfs4_state(data
);
690 nfs4_close_state(state
, data
->o_arg
.open_flags
);
692 nfs4_opendata_free(data
);
695 static const struct rpc_call_ops nfs4_open_ops
= {
696 .rpc_call_prepare
= nfs4_open_prepare
,
697 .rpc_call_done
= nfs4_open_done
,
698 .rpc_release
= nfs4_open_release
,
702 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
704 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
706 struct inode
*dir
= data
->dir
->d_inode
;
707 struct nfs_server
*server
= NFS_SERVER(dir
);
708 struct nfs_openargs
*o_arg
= &data
->o_arg
;
709 struct nfs_openres
*o_res
= &data
->o_res
;
710 struct rpc_task
*task
;
713 atomic_inc(&data
->count
);
715 * If rpc_run_task() ends up calling ->rpc_release(), we
716 * want to ensure that it takes the 'error' code path.
718 data
->rpc_status
= -ENOMEM
;
719 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_ops
, data
);
721 return PTR_ERR(task
);
722 status
= nfs4_wait_for_completion_rpc_task(task
);
727 status
= data
->rpc_status
;
728 rpc_release_task(task
);
732 if (o_arg
->open_flags
& O_CREAT
) {
733 update_changeattr(dir
, &o_res
->cinfo
);
734 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
736 nfs_refresh_inode(dir
, o_res
->dir_attr
);
737 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
738 status
= _nfs4_proc_open_confirm(data
);
742 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
743 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
744 return server
->rpc_ops
->getattr(server
, &o_res
->fh
, o_res
->f_attr
);
748 static int _nfs4_do_access(struct inode
*inode
, struct rpc_cred
*cred
, int openflags
)
750 struct nfs_access_entry cache
;
754 if (openflags
& FMODE_READ
)
756 if (openflags
& FMODE_WRITE
)
758 status
= nfs_access_get_cached(inode
, cred
, &cache
);
762 /* Be clever: ask server to check for all possible rights */
763 cache
.mask
= MAY_EXEC
| MAY_WRITE
| MAY_READ
;
765 cache
.jiffies
= jiffies
;
766 status
= _nfs4_proc_access(inode
, &cache
);
769 nfs_access_add_cache(inode
, &cache
);
771 if ((cache
.mask
& mask
) == mask
)
776 int nfs4_recover_expired_lease(struct nfs_server
*server
)
778 struct nfs4_client
*clp
= server
->nfs4_state
;
780 if (test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
))
781 nfs4_schedule_state_recovery(clp
);
782 return nfs4_wait_clnt_recover(server
->client
, clp
);
787 * reclaim state on the server after a network partition.
788 * Assumes caller holds the appropriate lock
790 static int _nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
, struct dentry
*dentry
)
792 struct inode
*inode
= state
->inode
;
793 struct nfs_delegation
*delegation
= NFS_I(inode
)->delegation
;
794 struct nfs4_opendata
*opendata
;
795 int openflags
= state
->state
& (FMODE_READ
|FMODE_WRITE
);
798 if (delegation
!= NULL
&& !(delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)) {
799 ret
= _nfs4_do_access(inode
, sp
->so_cred
, openflags
);
802 memcpy(&state
->stateid
, &delegation
->stateid
, sizeof(state
->stateid
));
803 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
806 opendata
= nfs4_opendata_alloc(dentry
, sp
, openflags
, NULL
);
807 if (opendata
== NULL
)
809 ret
= nfs4_open_recover(opendata
, state
);
810 if (ret
== -ESTALE
) {
811 /* Invalidate the state owner so we don't ever use it again */
812 nfs4_drop_state_owner(sp
);
815 nfs4_opendata_free(opendata
);
819 static inline int nfs4_do_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
, struct dentry
*dentry
)
821 struct nfs_server
*server
= NFS_SERVER(dentry
->d_inode
);
822 struct nfs4_exception exception
= { };
826 err
= _nfs4_open_expired(sp
, state
, dentry
);
827 if (err
== -NFS4ERR_DELAY
)
828 nfs4_handle_exception(server
, err
, &exception
);
829 } while (exception
.retry
);
833 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
835 struct nfs_open_context
*ctx
;
838 ctx
= nfs4_state_find_open_context(state
);
841 ret
= nfs4_do_open_expired(sp
, state
, ctx
->dentry
);
842 put_nfs_open_context(ctx
);
847 * Returns a referenced nfs4_state if there is an open delegation on the file
849 static int _nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
851 struct nfs_delegation
*delegation
;
852 struct nfs_server
*server
= NFS_SERVER(inode
);
853 struct nfs4_client
*clp
= server
->nfs4_state
;
854 struct nfs_inode
*nfsi
= NFS_I(inode
);
855 struct nfs4_state_owner
*sp
= NULL
;
856 struct nfs4_state
*state
= NULL
;
857 int open_flags
= flags
& (FMODE_READ
|FMODE_WRITE
);
861 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
862 dprintk("%s: nfs4_get_state_owner failed!\n", __FUNCTION__
);
865 err
= nfs4_recover_expired_lease(server
);
867 goto out_put_state_owner
;
868 /* Protect against reboot recovery - NOTE ORDER! */
869 down_read(&clp
->cl_sem
);
870 /* Protect against delegation recall */
871 down_read(&nfsi
->rwsem
);
872 delegation
= NFS_I(inode
)->delegation
;
874 if (delegation
== NULL
|| (delegation
->type
& open_flags
) != open_flags
)
877 state
= nfs4_get_open_state(inode
, sp
);
882 if ((state
->state
& open_flags
) == open_flags
) {
883 spin_lock(&inode
->i_lock
);
884 update_open_stateflags(state
, open_flags
);
885 spin_unlock(&inode
->i_lock
);
887 } else if (state
->state
!= 0)
888 goto out_put_open_state
;
891 err
= _nfs4_do_access(inode
, cred
, open_flags
);
894 goto out_put_open_state
;
895 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
896 update_open_stateid(state
, &delegation
->stateid
, open_flags
);
898 nfs4_put_state_owner(sp
);
899 up_read(&nfsi
->rwsem
);
900 up_read(&clp
->cl_sem
);
904 nfs4_put_open_state(state
);
906 up_read(&nfsi
->rwsem
);
907 up_read(&clp
->cl_sem
);
909 nfs_inode_return_delegation(inode
);
911 nfs4_put_state_owner(sp
);
915 static struct nfs4_state
*nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
)
917 struct nfs4_exception exception
= { };
918 struct nfs4_state
*res
= ERR_PTR(-EIO
);
922 err
= _nfs4_open_delegated(inode
, flags
, cred
, &res
);
925 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(inode
),
927 } while (exception
.retry
);
932 * Returns a referenced nfs4_state
934 static int _nfs4_do_open(struct inode
*dir
, struct dentry
*dentry
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
936 struct nfs4_state_owner
*sp
;
937 struct nfs4_state
*state
= NULL
;
938 struct nfs_server
*server
= NFS_SERVER(dir
);
939 struct nfs4_client
*clp
= server
->nfs4_state
;
940 struct nfs4_opendata
*opendata
;
943 /* Protect against reboot recovery conflicts */
945 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
946 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
949 status
= nfs4_recover_expired_lease(server
);
951 goto err_put_state_owner
;
952 down_read(&clp
->cl_sem
);
954 opendata
= nfs4_opendata_alloc(dentry
, sp
, flags
, sattr
);
955 if (opendata
== NULL
)
956 goto err_put_state_owner
;
958 status
= _nfs4_proc_open(opendata
);
960 goto err_opendata_free
;
963 state
= nfs4_opendata_to_nfs4_state(opendata
);
965 goto err_opendata_free
;
966 if (opendata
->o_res
.delegation_type
!= 0)
967 nfs_inode_set_delegation(state
->inode
, cred
, &opendata
->o_res
);
968 nfs4_opendata_free(opendata
);
969 nfs4_put_state_owner(sp
);
970 up_read(&clp
->cl_sem
);
974 nfs4_opendata_free(opendata
);
976 nfs4_put_state_owner(sp
);
978 /* Note: clp->cl_sem must be released before nfs4_put_open_state()! */
979 up_read(&clp
->cl_sem
);
985 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct dentry
*dentry
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
987 struct nfs4_exception exception
= { };
988 struct nfs4_state
*res
;
992 status
= _nfs4_do_open(dir
, dentry
, flags
, sattr
, cred
, &res
);
995 /* NOTE: BAD_SEQID means the server and client disagree about the
996 * book-keeping w.r.t. state-changing operations
997 * (OPEN/CLOSE/LOCK/LOCKU...)
998 * It is actually a sign of a bug on the client or on the server.
1000 * If we receive a BAD_SEQID error in the particular case of
1001 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1002 * have unhashed the old state_owner for us, and that we can
1003 * therefore safely retry using a new one. We should still warn
1004 * the user though...
1006 if (status
== -NFS4ERR_BAD_SEQID
) {
1007 printk(KERN_WARNING
"NFS: v4 server returned a bad sequence-id error!\n");
1008 exception
.retry
= 1;
1012 * BAD_STATEID on OPEN means that the server cancelled our
1013 * state before it received the OPEN_CONFIRM.
1014 * Recover by retrying the request as per the discussion
1015 * on Page 181 of RFC3530.
1017 if (status
== -NFS4ERR_BAD_STATEID
) {
1018 exception
.retry
= 1;
1021 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1022 status
, &exception
));
1023 } while (exception
.retry
);
1027 static int _nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1028 struct iattr
*sattr
, struct nfs4_state
*state
)
1030 struct nfs_server
*server
= NFS_SERVER(inode
);
1031 struct nfs_setattrargs arg
= {
1032 .fh
= NFS_FH(inode
),
1035 .bitmask
= server
->attr_bitmask
,
1037 struct nfs_setattrres res
= {
1041 struct rpc_message msg
= {
1042 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1046 unsigned long timestamp
= jiffies
;
1049 nfs_fattr_init(fattr
);
1051 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1052 /* Use that stateid */
1053 } else if (state
!= NULL
) {
1054 msg
.rpc_cred
= state
->owner
->so_cred
;
1055 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1057 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1059 status
= rpc_call_sync(server
->client
, &msg
, 0);
1060 if (status
== 0 && state
!= NULL
)
1061 renew_lease(server
, timestamp
);
1065 static int nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1066 struct iattr
*sattr
, struct nfs4_state
*state
)
1068 struct nfs_server
*server
= NFS_SERVER(inode
);
1069 struct nfs4_exception exception
= { };
1072 err
= nfs4_handle_exception(server
,
1073 _nfs4_do_setattr(inode
, fattr
, sattr
, state
),
1075 } while (exception
.retry
);
1079 struct nfs4_closedata
{
1080 struct inode
*inode
;
1081 struct nfs4_state
*state
;
1082 struct nfs_closeargs arg
;
1083 struct nfs_closeres res
;
1084 struct nfs_fattr fattr
;
1085 unsigned long timestamp
;
1088 static void nfs4_free_closedata(void *data
)
1090 struct nfs4_closedata
*calldata
= data
;
1091 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1093 nfs4_put_open_state(calldata
->state
);
1094 nfs_free_seqid(calldata
->arg
.seqid
);
1095 nfs4_put_state_owner(sp
);
1099 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1101 struct nfs4_closedata
*calldata
= data
;
1102 struct nfs4_state
*state
= calldata
->state
;
1103 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1105 if (RPC_ASSASSINATED(task
))
1107 /* hmm. we are done with the inode, and in the process of freeing
1108 * the state_owner. we keep this around to process errors
1110 nfs_increment_open_seqid(task
->tk_status
, calldata
->arg
.seqid
);
1111 switch (task
->tk_status
) {
1113 memcpy(&state
->stateid
, &calldata
->res
.stateid
,
1114 sizeof(state
->stateid
));
1115 renew_lease(server
, calldata
->timestamp
);
1117 case -NFS4ERR_STALE_STATEID
:
1118 case -NFS4ERR_EXPIRED
:
1119 nfs4_schedule_state_recovery(server
->nfs4_state
);
1122 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
1123 rpc_restart_call(task
);
1127 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1130 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1132 struct nfs4_closedata
*calldata
= data
;
1133 struct nfs4_state
*state
= calldata
->state
;
1134 struct rpc_message msg
= {
1135 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1136 .rpc_argp
= &calldata
->arg
,
1137 .rpc_resp
= &calldata
->res
,
1138 .rpc_cred
= state
->owner
->so_cred
,
1140 int mode
= 0, old_mode
;
1142 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1144 /* Recalculate the new open mode in case someone reopened the file
1145 * while we were waiting in line to be scheduled.
1147 spin_lock(&state
->owner
->so_lock
);
1148 spin_lock(&calldata
->inode
->i_lock
);
1149 mode
= old_mode
= state
->state
;
1150 if (state
->n_rdwr
== 0) {
1151 if (state
->n_rdonly
== 0)
1152 mode
&= ~FMODE_READ
;
1153 if (state
->n_wronly
== 0)
1154 mode
&= ~FMODE_WRITE
;
1156 nfs4_state_set_mode_locked(state
, mode
);
1157 spin_unlock(&calldata
->inode
->i_lock
);
1158 spin_unlock(&state
->owner
->so_lock
);
1159 if (mode
== old_mode
|| test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
1160 /* Note: exit _without_ calling nfs4_close_done */
1161 task
->tk_action
= NULL
;
1164 nfs_fattr_init(calldata
->res
.fattr
);
1166 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1167 calldata
->arg
.open_flags
= mode
;
1168 calldata
->timestamp
= jiffies
;
1169 rpc_call_setup(task
, &msg
, 0);
1172 static const struct rpc_call_ops nfs4_close_ops
= {
1173 .rpc_call_prepare
= nfs4_close_prepare
,
1174 .rpc_call_done
= nfs4_close_done
,
1175 .rpc_release
= nfs4_free_closedata
,
1179 * It is possible for data to be read/written from a mem-mapped file
1180 * after the sys_close call (which hits the vfs layer as a flush).
1181 * This means that we can't safely call nfsv4 close on a file until
1182 * the inode is cleared. This in turn means that we are not good
1183 * NFSv4 citizens - we do not indicate to the server to update the file's
1184 * share state even when we are done with one of the three share
1185 * stateid's in the inode.
1187 * NOTE: Caller must be holding the sp->so_owner semaphore!
1189 int nfs4_do_close(struct inode
*inode
, struct nfs4_state
*state
)
1191 struct nfs_server
*server
= NFS_SERVER(inode
);
1192 struct nfs4_closedata
*calldata
;
1193 int status
= -ENOMEM
;
1195 calldata
= kmalloc(sizeof(*calldata
), GFP_KERNEL
);
1196 if (calldata
== NULL
)
1198 calldata
->inode
= inode
;
1199 calldata
->state
= state
;
1200 calldata
->arg
.fh
= NFS_FH(inode
);
1201 calldata
->arg
.stateid
= &state
->stateid
;
1202 /* Serialization for the sequence id */
1203 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1204 if (calldata
->arg
.seqid
== NULL
)
1205 goto out_free_calldata
;
1206 calldata
->arg
.bitmask
= server
->attr_bitmask
;
1207 calldata
->res
.fattr
= &calldata
->fattr
;
1208 calldata
->res
.server
= server
;
1210 status
= nfs4_call_async(server
->client
, &nfs4_close_ops
, calldata
);
1214 nfs_free_seqid(calldata
->arg
.seqid
);
1221 static int nfs4_intent_set_file(struct nameidata
*nd
, struct dentry
*dentry
, struct nfs4_state
*state
)
1225 filp
= lookup_instantiate_filp(nd
, dentry
, NULL
);
1226 if (!IS_ERR(filp
)) {
1227 struct nfs_open_context
*ctx
;
1228 ctx
= (struct nfs_open_context
*)filp
->private_data
;
1232 nfs4_close_state(state
, nd
->intent
.open
.flags
);
1233 return PTR_ERR(filp
);
1237 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1240 struct rpc_cred
*cred
;
1241 struct nfs4_state
*state
;
1244 if (nd
->flags
& LOOKUP_CREATE
) {
1245 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1246 attr
.ia_valid
= ATTR_MODE
;
1247 if (!IS_POSIXACL(dir
))
1248 attr
.ia_mode
&= ~current
->fs
->umask
;
1251 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1254 cred
= rpcauth_lookupcred(NFS_SERVER(dir
)->client
->cl_auth
, 0);
1256 return (struct dentry
*)cred
;
1257 state
= nfs4_do_open(dir
, dentry
, nd
->intent
.open
.flags
, &attr
, cred
);
1259 if (IS_ERR(state
)) {
1260 if (PTR_ERR(state
) == -ENOENT
)
1261 d_add(dentry
, NULL
);
1262 return (struct dentry
*)state
;
1264 res
= d_add_unique(dentry
, igrab(state
->inode
));
1267 nfs4_intent_set_file(nd
, dentry
, state
);
1272 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1274 struct rpc_cred
*cred
;
1275 struct nfs4_state
*state
;
1277 cred
= rpcauth_lookupcred(NFS_SERVER(dir
)->client
->cl_auth
, 0);
1279 return PTR_ERR(cred
);
1280 state
= nfs4_open_delegated(dentry
->d_inode
, openflags
, cred
);
1282 state
= nfs4_do_open(dir
, dentry
, openflags
, NULL
, cred
);
1284 if (IS_ERR(state
)) {
1285 switch (PTR_ERR(state
)) {
1291 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1294 if (dentry
->d_inode
== NULL
)
1299 if (state
->inode
== dentry
->d_inode
) {
1300 nfs4_intent_set_file(nd
, dentry
, state
);
1303 nfs4_close_state(state
, openflags
);
1310 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1312 struct nfs4_server_caps_res res
= {};
1313 struct rpc_message msg
= {
1314 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1315 .rpc_argp
= fhandle
,
1320 status
= rpc_call_sync(server
->client
, &msg
, 0);
1322 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
1323 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
1324 server
->caps
|= NFS_CAP_ACLS
;
1325 if (res
.has_links
!= 0)
1326 server
->caps
|= NFS_CAP_HARDLINKS
;
1327 if (res
.has_symlinks
!= 0)
1328 server
->caps
|= NFS_CAP_SYMLINKS
;
1329 server
->acl_bitmask
= res
.acl_bitmask
;
1334 static int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1336 struct nfs4_exception exception
= { };
1339 err
= nfs4_handle_exception(server
,
1340 _nfs4_server_capabilities(server
, fhandle
),
1342 } while (exception
.retry
);
1346 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1347 struct nfs_fsinfo
*info
)
1349 struct nfs4_lookup_root_arg args
= {
1350 .bitmask
= nfs4_fattr_bitmap
,
1352 struct nfs4_lookup_res res
= {
1354 .fattr
= info
->fattr
,
1357 struct rpc_message msg
= {
1358 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
1362 nfs_fattr_init(info
->fattr
);
1363 return rpc_call_sync(server
->client
, &msg
, 0);
1366 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1367 struct nfs_fsinfo
*info
)
1369 struct nfs4_exception exception
= { };
1372 err
= nfs4_handle_exception(server
,
1373 _nfs4_lookup_root(server
, fhandle
, info
),
1375 } while (exception
.retry
);
1379 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1380 struct nfs_fsinfo
*info
)
1382 struct nfs_fattr
* fattr
= info
->fattr
;
1385 struct nfs4_lookup_arg args
= {
1388 .bitmask
= nfs4_fattr_bitmap
,
1390 struct nfs4_lookup_res res
= {
1395 struct rpc_message msg
= {
1396 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1403 * Now we do a separate LOOKUP for each component of the mount path.
1404 * The LOOKUPs are done separately so that we can conveniently
1405 * catch an ERR_WRONGSEC if it occurs along the way...
1407 status
= nfs4_lookup_root(server
, fhandle
, info
);
1411 p
= server
->mnt_path
;
1413 struct nfs4_exception exception
= { };
1420 while (*p
&& (*p
!= '/'))
1425 nfs_fattr_init(fattr
);
1426 status
= nfs4_handle_exception(server
,
1427 rpc_call_sync(server
->client
, &msg
, 0),
1429 } while (exception
.retry
);
1432 if (status
== -ENOENT
) {
1433 printk(KERN_NOTICE
"NFS: mount path %s does not exist!\n", server
->mnt_path
);
1434 printk(KERN_NOTICE
"NFS: suggestion: try mounting '/' instead.\n");
1439 status
= nfs4_server_capabilities(server
, fhandle
);
1441 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
1443 return nfs4_map_errors(status
);
1446 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1448 struct nfs4_getattr_arg args
= {
1450 .bitmask
= server
->attr_bitmask
,
1452 struct nfs4_getattr_res res
= {
1456 struct rpc_message msg
= {
1457 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
1462 nfs_fattr_init(fattr
);
1463 return rpc_call_sync(server
->client
, &msg
, 0);
1466 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1468 struct nfs4_exception exception
= { };
1471 err
= nfs4_handle_exception(server
,
1472 _nfs4_proc_getattr(server
, fhandle
, fattr
),
1474 } while (exception
.retry
);
1479 * The file is not closed if it is opened due to the a request to change
1480 * the size of the file. The open call will not be needed once the
1481 * VFS layer lookup-intents are implemented.
1483 * Close is called when the inode is destroyed.
1484 * If we haven't opened the file for O_WRONLY, we
1485 * need to in the size_change case to obtain a stateid.
1488 * Because OPEN is always done by name in nfsv4, it is
1489 * possible that we opened a different file by the same
1490 * name. We can recognize this race condition, but we
1491 * can't do anything about it besides returning an error.
1493 * This will be fixed with VFS changes (lookup-intent).
1496 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
1497 struct iattr
*sattr
)
1499 struct rpc_cred
*cred
;
1500 struct inode
*inode
= dentry
->d_inode
;
1501 struct nfs_open_context
*ctx
;
1502 struct nfs4_state
*state
= NULL
;
1505 nfs_fattr_init(fattr
);
1507 cred
= rpcauth_lookupcred(NFS_SERVER(inode
)->client
->cl_auth
, 0);
1509 return PTR_ERR(cred
);
1511 /* Search for an existing open(O_WRITE) file */
1512 ctx
= nfs_find_open_context(inode
, cred
, FMODE_WRITE
);
1516 status
= nfs4_do_setattr(inode
, fattr
, sattr
, state
);
1518 nfs_setattr_update_inode(inode
, sattr
);
1520 put_nfs_open_context(ctx
);
1525 static int _nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
1526 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1529 struct nfs_server
*server
= NFS_SERVER(dir
);
1530 struct nfs4_lookup_arg args
= {
1531 .bitmask
= server
->attr_bitmask
,
1532 .dir_fh
= NFS_FH(dir
),
1535 struct nfs4_lookup_res res
= {
1540 struct rpc_message msg
= {
1541 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1546 nfs_fattr_init(fattr
);
1548 dprintk("NFS call lookup %s\n", name
->name
);
1549 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
1550 dprintk("NFS reply lookup: %d\n", status
);
1554 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1556 struct nfs4_exception exception
= { };
1559 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1560 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
1562 } while (exception
.retry
);
1566 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1568 struct nfs4_accessargs args
= {
1569 .fh
= NFS_FH(inode
),
1571 struct nfs4_accessres res
= { 0 };
1572 struct rpc_message msg
= {
1573 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
1576 .rpc_cred
= entry
->cred
,
1578 int mode
= entry
->mask
;
1582 * Determine which access bits we want to ask for...
1584 if (mode
& MAY_READ
)
1585 args
.access
|= NFS4_ACCESS_READ
;
1586 if (S_ISDIR(inode
->i_mode
)) {
1587 if (mode
& MAY_WRITE
)
1588 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
1589 if (mode
& MAY_EXEC
)
1590 args
.access
|= NFS4_ACCESS_LOOKUP
;
1592 if (mode
& MAY_WRITE
)
1593 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
1594 if (mode
& MAY_EXEC
)
1595 args
.access
|= NFS4_ACCESS_EXECUTE
;
1597 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1600 if (res
.access
& NFS4_ACCESS_READ
)
1601 entry
->mask
|= MAY_READ
;
1602 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
1603 entry
->mask
|= MAY_WRITE
;
1604 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
1605 entry
->mask
|= MAY_EXEC
;
1610 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1612 struct nfs4_exception exception
= { };
1615 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1616 _nfs4_proc_access(inode
, entry
),
1618 } while (exception
.retry
);
1623 * TODO: For the time being, we don't try to get any attributes
1624 * along with any of the zero-copy operations READ, READDIR,
1627 * In the case of the first three, we want to put the GETATTR
1628 * after the read-type operation -- this is because it is hard
1629 * to predict the length of a GETATTR response in v4, and thus
1630 * align the READ data correctly. This means that the GETATTR
1631 * may end up partially falling into the page cache, and we should
1632 * shift it into the 'tail' of the xdr_buf before processing.
1633 * To do this efficiently, we need to know the total length
1634 * of data received, which doesn't seem to be available outside
1637 * In the case of WRITE, we also want to put the GETATTR after
1638 * the operation -- in this case because we want to make sure
1639 * we get the post-operation mtime and size. This means that
1640 * we can't use xdr_encode_pages() as written: we need a variant
1641 * of it which would leave room in the 'tail' iovec.
1643 * Both of these changes to the XDR layer would in fact be quite
1644 * minor, but I decided to leave them for a subsequent patch.
1646 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1647 unsigned int pgbase
, unsigned int pglen
)
1649 struct nfs4_readlink args
= {
1650 .fh
= NFS_FH(inode
),
1655 struct rpc_message msg
= {
1656 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
1661 return rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1664 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1665 unsigned int pgbase
, unsigned int pglen
)
1667 struct nfs4_exception exception
= { };
1670 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1671 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
1673 } while (exception
.retry
);
1677 static int _nfs4_proc_read(struct nfs_read_data
*rdata
)
1679 int flags
= rdata
->flags
;
1680 struct inode
*inode
= rdata
->inode
;
1681 struct nfs_fattr
*fattr
= rdata
->res
.fattr
;
1682 struct nfs_server
*server
= NFS_SERVER(inode
);
1683 struct rpc_message msg
= {
1684 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
],
1685 .rpc_argp
= &rdata
->args
,
1686 .rpc_resp
= &rdata
->res
,
1687 .rpc_cred
= rdata
->cred
,
1689 unsigned long timestamp
= jiffies
;
1692 dprintk("NFS call read %d @ %Ld\n", rdata
->args
.count
,
1693 (long long) rdata
->args
.offset
);
1695 nfs_fattr_init(fattr
);
1696 status
= rpc_call_sync(server
->client
, &msg
, flags
);
1698 renew_lease(server
, timestamp
);
1699 dprintk("NFS reply read: %d\n", status
);
1703 static int nfs4_proc_read(struct nfs_read_data
*rdata
)
1705 struct nfs4_exception exception
= { };
1708 err
= nfs4_handle_exception(NFS_SERVER(rdata
->inode
),
1709 _nfs4_proc_read(rdata
),
1711 } while (exception
.retry
);
1715 static int _nfs4_proc_write(struct nfs_write_data
*wdata
)
1717 int rpcflags
= wdata
->flags
;
1718 struct inode
*inode
= wdata
->inode
;
1719 struct nfs_fattr
*fattr
= wdata
->res
.fattr
;
1720 struct nfs_server
*server
= NFS_SERVER(inode
);
1721 struct rpc_message msg
= {
1722 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
],
1723 .rpc_argp
= &wdata
->args
,
1724 .rpc_resp
= &wdata
->res
,
1725 .rpc_cred
= wdata
->cred
,
1729 dprintk("NFS call write %d @ %Ld\n", wdata
->args
.count
,
1730 (long long) wdata
->args
.offset
);
1732 wdata
->args
.bitmask
= server
->attr_bitmask
;
1733 wdata
->res
.server
= server
;
1734 wdata
->timestamp
= jiffies
;
1735 nfs_fattr_init(fattr
);
1736 status
= rpc_call_sync(server
->client
, &msg
, rpcflags
);
1737 dprintk("NFS reply write: %d\n", status
);
1740 renew_lease(server
, wdata
->timestamp
);
1741 nfs_post_op_update_inode(inode
, fattr
);
1742 return wdata
->res
.count
;
1745 static int nfs4_proc_write(struct nfs_write_data
*wdata
)
1747 struct nfs4_exception exception
= { };
1750 err
= nfs4_handle_exception(NFS_SERVER(wdata
->inode
),
1751 _nfs4_proc_write(wdata
),
1753 } while (exception
.retry
);
1757 static int _nfs4_proc_commit(struct nfs_write_data
*cdata
)
1759 struct inode
*inode
= cdata
->inode
;
1760 struct nfs_fattr
*fattr
= cdata
->res
.fattr
;
1761 struct nfs_server
*server
= NFS_SERVER(inode
);
1762 struct rpc_message msg
= {
1763 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
],
1764 .rpc_argp
= &cdata
->args
,
1765 .rpc_resp
= &cdata
->res
,
1766 .rpc_cred
= cdata
->cred
,
1770 dprintk("NFS call commit %d @ %Ld\n", cdata
->args
.count
,
1771 (long long) cdata
->args
.offset
);
1773 cdata
->args
.bitmask
= server
->attr_bitmask
;
1774 cdata
->res
.server
= server
;
1775 cdata
->timestamp
= jiffies
;
1776 nfs_fattr_init(fattr
);
1777 status
= rpc_call_sync(server
->client
, &msg
, 0);
1779 renew_lease(server
, cdata
->timestamp
);
1780 dprintk("NFS reply commit: %d\n", status
);
1782 nfs_post_op_update_inode(inode
, fattr
);
1786 static int nfs4_proc_commit(struct nfs_write_data
*cdata
)
1788 struct nfs4_exception exception
= { };
1791 err
= nfs4_handle_exception(NFS_SERVER(cdata
->inode
),
1792 _nfs4_proc_commit(cdata
),
1794 } while (exception
.retry
);
1800 * We will need to arrange for the VFS layer to provide an atomic open.
1801 * Until then, this create/open method is prone to inefficiency and race
1802 * conditions due to the lookup, create, and open VFS calls from sys_open()
1803 * placed on the wire.
1805 * Given the above sorry state of affairs, I'm simply sending an OPEN.
1806 * The file will be opened again in the subsequent VFS open call
1807 * (nfs4_proc_file_open).
1809 * The open for read will just hang around to be used by any process that
1810 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
1814 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
1815 int flags
, struct nameidata
*nd
)
1817 struct nfs4_state
*state
;
1818 struct rpc_cred
*cred
;
1821 cred
= rpcauth_lookupcred(NFS_SERVER(dir
)->client
->cl_auth
, 0);
1823 status
= PTR_ERR(cred
);
1826 state
= nfs4_do_open(dir
, dentry
, flags
, sattr
, cred
);
1828 if (IS_ERR(state
)) {
1829 status
= PTR_ERR(state
);
1832 d_instantiate(dentry
, igrab(state
->inode
));
1833 if (flags
& O_EXCL
) {
1834 struct nfs_fattr fattr
;
1835 status
= nfs4_do_setattr(state
->inode
, &fattr
, sattr
, state
);
1837 nfs_setattr_update_inode(state
->inode
, sattr
);
1839 if (status
== 0 && nd
!= NULL
&& (nd
->flags
& LOOKUP_OPEN
))
1840 status
= nfs4_intent_set_file(nd
, dentry
, state
);
1842 nfs4_close_state(state
, flags
);
1847 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1849 struct nfs_server
*server
= NFS_SERVER(dir
);
1850 struct nfs4_remove_arg args
= {
1853 .bitmask
= server
->attr_bitmask
,
1855 struct nfs_fattr dir_attr
;
1856 struct nfs4_remove_res res
= {
1858 .dir_attr
= &dir_attr
,
1860 struct rpc_message msg
= {
1861 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
1867 nfs_fattr_init(res
.dir_attr
);
1868 status
= rpc_call_sync(server
->client
, &msg
, 0);
1870 update_changeattr(dir
, &res
.cinfo
);
1871 nfs_post_op_update_inode(dir
, res
.dir_attr
);
1876 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1878 struct nfs4_exception exception
= { };
1881 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1882 _nfs4_proc_remove(dir
, name
),
1884 } while (exception
.retry
);
1888 struct unlink_desc
{
1889 struct nfs4_remove_arg args
;
1890 struct nfs4_remove_res res
;
1891 struct nfs_fattr dir_attr
;
1894 static int nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct dentry
*dir
,
1897 struct nfs_server
*server
= NFS_SERVER(dir
->d_inode
);
1898 struct unlink_desc
*up
;
1900 up
= (struct unlink_desc
*) kmalloc(sizeof(*up
), GFP_KERNEL
);
1904 up
->args
.fh
= NFS_FH(dir
->d_inode
);
1905 up
->args
.name
= name
;
1906 up
->args
.bitmask
= server
->attr_bitmask
;
1907 up
->res
.server
= server
;
1908 up
->res
.dir_attr
= &up
->dir_attr
;
1910 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
1911 msg
->rpc_argp
= &up
->args
;
1912 msg
->rpc_resp
= &up
->res
;
1916 static int nfs4_proc_unlink_done(struct dentry
*dir
, struct rpc_task
*task
)
1918 struct rpc_message
*msg
= &task
->tk_msg
;
1919 struct unlink_desc
*up
;
1921 if (msg
->rpc_resp
!= NULL
) {
1922 up
= container_of(msg
->rpc_resp
, struct unlink_desc
, res
);
1923 update_changeattr(dir
->d_inode
, &up
->res
.cinfo
);
1924 nfs_post_op_update_inode(dir
->d_inode
, up
->res
.dir_attr
);
1926 msg
->rpc_resp
= NULL
;
1927 msg
->rpc_argp
= NULL
;
1932 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1933 struct inode
*new_dir
, struct qstr
*new_name
)
1935 struct nfs_server
*server
= NFS_SERVER(old_dir
);
1936 struct nfs4_rename_arg arg
= {
1937 .old_dir
= NFS_FH(old_dir
),
1938 .new_dir
= NFS_FH(new_dir
),
1939 .old_name
= old_name
,
1940 .new_name
= new_name
,
1941 .bitmask
= server
->attr_bitmask
,
1943 struct nfs_fattr old_fattr
, new_fattr
;
1944 struct nfs4_rename_res res
= {
1946 .old_fattr
= &old_fattr
,
1947 .new_fattr
= &new_fattr
,
1949 struct rpc_message msg
= {
1950 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
1956 nfs_fattr_init(res
.old_fattr
);
1957 nfs_fattr_init(res
.new_fattr
);
1958 status
= rpc_call_sync(server
->client
, &msg
, 0);
1961 update_changeattr(old_dir
, &res
.old_cinfo
);
1962 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
1963 update_changeattr(new_dir
, &res
.new_cinfo
);
1964 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
1969 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1970 struct inode
*new_dir
, struct qstr
*new_name
)
1972 struct nfs4_exception exception
= { };
1975 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
1976 _nfs4_proc_rename(old_dir
, old_name
,
1979 } while (exception
.retry
);
1983 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
1985 struct nfs_server
*server
= NFS_SERVER(inode
);
1986 struct nfs4_link_arg arg
= {
1987 .fh
= NFS_FH(inode
),
1988 .dir_fh
= NFS_FH(dir
),
1990 .bitmask
= server
->attr_bitmask
,
1992 struct nfs_fattr fattr
, dir_attr
;
1993 struct nfs4_link_res res
= {
1996 .dir_attr
= &dir_attr
,
1998 struct rpc_message msg
= {
1999 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2005 nfs_fattr_init(res
.fattr
);
2006 nfs_fattr_init(res
.dir_attr
);
2007 status
= rpc_call_sync(server
->client
, &msg
, 0);
2009 update_changeattr(dir
, &res
.cinfo
);
2010 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2011 nfs_post_op_update_inode(inode
, res
.fattr
);
2017 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2019 struct nfs4_exception exception
= { };
2022 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2023 _nfs4_proc_link(inode
, dir
, name
),
2025 } while (exception
.retry
);
2029 static int _nfs4_proc_symlink(struct inode
*dir
, struct qstr
*name
,
2030 struct qstr
*path
, struct iattr
*sattr
, struct nfs_fh
*fhandle
,
2031 struct nfs_fattr
*fattr
)
2033 struct nfs_server
*server
= NFS_SERVER(dir
);
2034 struct nfs_fattr dir_fattr
;
2035 struct nfs4_create_arg arg
= {
2036 .dir_fh
= NFS_FH(dir
),
2041 .bitmask
= server
->attr_bitmask
,
2043 struct nfs4_create_res res
= {
2047 .dir_fattr
= &dir_fattr
,
2049 struct rpc_message msg
= {
2050 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
],
2056 if (path
->len
> NFS4_MAXPATHLEN
)
2057 return -ENAMETOOLONG
;
2058 arg
.u
.symlink
= path
;
2059 nfs_fattr_init(fattr
);
2060 nfs_fattr_init(&dir_fattr
);
2062 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2064 update_changeattr(dir
, &res
.dir_cinfo
);
2065 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2069 static int nfs4_proc_symlink(struct inode
*dir
, struct qstr
*name
,
2070 struct qstr
*path
, struct iattr
*sattr
, struct nfs_fh
*fhandle
,
2071 struct nfs_fattr
*fattr
)
2073 struct nfs4_exception exception
= { };
2076 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2077 _nfs4_proc_symlink(dir
, name
, path
, sattr
,
2080 } while (exception
.retry
);
2084 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2085 struct iattr
*sattr
)
2087 struct nfs_server
*server
= NFS_SERVER(dir
);
2088 struct nfs_fh fhandle
;
2089 struct nfs_fattr fattr
, dir_fattr
;
2090 struct nfs4_create_arg arg
= {
2091 .dir_fh
= NFS_FH(dir
),
2093 .name
= &dentry
->d_name
,
2096 .bitmask
= server
->attr_bitmask
,
2098 struct nfs4_create_res res
= {
2102 .dir_fattr
= &dir_fattr
,
2104 struct rpc_message msg
= {
2105 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2111 nfs_fattr_init(&fattr
);
2112 nfs_fattr_init(&dir_fattr
);
2114 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2116 update_changeattr(dir
, &res
.dir_cinfo
);
2117 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2118 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2123 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2124 struct iattr
*sattr
)
2126 struct nfs4_exception exception
= { };
2129 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2130 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2132 } while (exception
.retry
);
2136 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2137 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2139 struct inode
*dir
= dentry
->d_inode
;
2140 struct nfs4_readdir_arg args
= {
2145 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2147 struct nfs4_readdir_res res
;
2148 struct rpc_message msg
= {
2149 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2156 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__
,
2157 dentry
->d_parent
->d_name
.name
,
2158 dentry
->d_name
.name
,
2159 (unsigned long long)cookie
);
2161 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2162 res
.pgbase
= args
.pgbase
;
2163 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2165 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2167 dprintk("%s: returns %d\n", __FUNCTION__
, status
);
2171 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2172 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2174 struct nfs4_exception exception
= { };
2177 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2178 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2181 } while (exception
.retry
);
2185 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2186 struct iattr
*sattr
, dev_t rdev
)
2188 struct nfs_server
*server
= NFS_SERVER(dir
);
2190 struct nfs_fattr fattr
, dir_fattr
;
2191 struct nfs4_create_arg arg
= {
2192 .dir_fh
= NFS_FH(dir
),
2194 .name
= &dentry
->d_name
,
2196 .bitmask
= server
->attr_bitmask
,
2198 struct nfs4_create_res res
= {
2202 .dir_fattr
= &dir_fattr
,
2204 struct rpc_message msg
= {
2205 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2210 int mode
= sattr
->ia_mode
;
2212 nfs_fattr_init(&fattr
);
2213 nfs_fattr_init(&dir_fattr
);
2215 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2216 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2218 arg
.ftype
= NF4FIFO
;
2219 else if (S_ISBLK(mode
)) {
2221 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2222 arg
.u
.device
.specdata2
= MINOR(rdev
);
2224 else if (S_ISCHR(mode
)) {
2226 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2227 arg
.u
.device
.specdata2
= MINOR(rdev
);
2230 arg
.ftype
= NF4SOCK
;
2232 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2234 update_changeattr(dir
, &res
.dir_cinfo
);
2235 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2236 status
= nfs_instantiate(dentry
, &fh
, &fattr
);
2241 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2242 struct iattr
*sattr
, dev_t rdev
)
2244 struct nfs4_exception exception
= { };
2247 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2248 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2250 } while (exception
.retry
);
2254 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2255 struct nfs_fsstat
*fsstat
)
2257 struct nfs4_statfs_arg args
= {
2259 .bitmask
= server
->attr_bitmask
,
2261 struct rpc_message msg
= {
2262 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2267 nfs_fattr_init(fsstat
->fattr
);
2268 return rpc_call_sync(server
->client
, &msg
, 0);
2271 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2273 struct nfs4_exception exception
= { };
2276 err
= nfs4_handle_exception(server
,
2277 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2279 } while (exception
.retry
);
2283 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2284 struct nfs_fsinfo
*fsinfo
)
2286 struct nfs4_fsinfo_arg args
= {
2288 .bitmask
= server
->attr_bitmask
,
2290 struct rpc_message msg
= {
2291 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2296 return rpc_call_sync(server
->client
, &msg
, 0);
2299 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2301 struct nfs4_exception exception
= { };
2305 err
= nfs4_handle_exception(server
,
2306 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2308 } while (exception
.retry
);
2312 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2314 nfs_fattr_init(fsinfo
->fattr
);
2315 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2318 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2319 struct nfs_pathconf
*pathconf
)
2321 struct nfs4_pathconf_arg args
= {
2323 .bitmask
= server
->attr_bitmask
,
2325 struct rpc_message msg
= {
2326 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2328 .rpc_resp
= pathconf
,
2331 /* None of the pathconf attributes are mandatory to implement */
2332 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2333 memset(pathconf
, 0, sizeof(*pathconf
));
2337 nfs_fattr_init(pathconf
->fattr
);
2338 return rpc_call_sync(server
->client
, &msg
, 0);
2341 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2342 struct nfs_pathconf
*pathconf
)
2344 struct nfs4_exception exception
= { };
2348 err
= nfs4_handle_exception(server
,
2349 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2351 } while (exception
.retry
);
2355 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2357 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2359 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
2360 rpc_restart_call(task
);
2363 if (task
->tk_status
> 0)
2364 renew_lease(server
, data
->timestamp
);
2368 static void nfs4_proc_read_setup(struct nfs_read_data
*data
)
2370 struct rpc_message msg
= {
2371 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
],
2372 .rpc_argp
= &data
->args
,
2373 .rpc_resp
= &data
->res
,
2374 .rpc_cred
= data
->cred
,
2377 data
->timestamp
= jiffies
;
2379 rpc_call_setup(&data
->task
, &msg
, 0);
2382 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2384 struct inode
*inode
= data
->inode
;
2386 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2387 rpc_restart_call(task
);
2390 if (task
->tk_status
>= 0) {
2391 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2392 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2397 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, int how
)
2399 struct rpc_message msg
= {
2400 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
],
2401 .rpc_argp
= &data
->args
,
2402 .rpc_resp
= &data
->res
,
2403 .rpc_cred
= data
->cred
,
2405 struct inode
*inode
= data
->inode
;
2406 struct nfs_server
*server
= NFS_SERVER(inode
);
2409 if (how
& FLUSH_STABLE
) {
2410 if (!NFS_I(inode
)->ncommit
)
2411 stable
= NFS_FILE_SYNC
;
2413 stable
= NFS_DATA_SYNC
;
2415 stable
= NFS_UNSTABLE
;
2416 data
->args
.stable
= stable
;
2417 data
->args
.bitmask
= server
->attr_bitmask
;
2418 data
->res
.server
= server
;
2420 data
->timestamp
= jiffies
;
2422 /* Finalize the task. */
2423 rpc_call_setup(&data
->task
, &msg
, 0);
2426 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2428 struct inode
*inode
= data
->inode
;
2430 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2431 rpc_restart_call(task
);
2434 if (task
->tk_status
>= 0)
2435 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2439 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, int how
)
2441 struct rpc_message msg
= {
2442 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
],
2443 .rpc_argp
= &data
->args
,
2444 .rpc_resp
= &data
->res
,
2445 .rpc_cred
= data
->cred
,
2447 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2449 data
->args
.bitmask
= server
->attr_bitmask
;
2450 data
->res
.server
= server
;
2452 rpc_call_setup(&data
->task
, &msg
, 0);
2456 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
2457 * standalone procedure for queueing an asynchronous RENEW.
2459 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
2461 struct nfs4_client
*clp
= (struct nfs4_client
*)task
->tk_msg
.rpc_argp
;
2462 unsigned long timestamp
= (unsigned long)data
;
2464 if (task
->tk_status
< 0) {
2465 switch (task
->tk_status
) {
2466 case -NFS4ERR_STALE_CLIENTID
:
2467 case -NFS4ERR_EXPIRED
:
2468 case -NFS4ERR_CB_PATH_DOWN
:
2469 nfs4_schedule_state_recovery(clp
);
2473 spin_lock(&clp
->cl_lock
);
2474 if (time_before(clp
->cl_last_renewal
,timestamp
))
2475 clp
->cl_last_renewal
= timestamp
;
2476 spin_unlock(&clp
->cl_lock
);
2479 static const struct rpc_call_ops nfs4_renew_ops
= {
2480 .rpc_call_done
= nfs4_renew_done
,
2483 int nfs4_proc_async_renew(struct nfs4_client
*clp
, struct rpc_cred
*cred
)
2485 struct rpc_message msg
= {
2486 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2491 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
2492 &nfs4_renew_ops
, (void *)jiffies
);
2495 int nfs4_proc_renew(struct nfs4_client
*clp
, struct rpc_cred
*cred
)
2497 struct rpc_message msg
= {
2498 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2502 unsigned long now
= jiffies
;
2505 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2508 spin_lock(&clp
->cl_lock
);
2509 if (time_before(clp
->cl_last_renewal
,now
))
2510 clp
->cl_last_renewal
= now
;
2511 spin_unlock(&clp
->cl_lock
);
2515 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
2517 return (server
->caps
& NFS_CAP_ACLS
)
2518 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2519 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
2522 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
2523 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
2526 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
2528 static void buf_to_pages(const void *buf
, size_t buflen
,
2529 struct page
**pages
, unsigned int *pgbase
)
2531 const void *p
= buf
;
2533 *pgbase
= offset_in_page(buf
);
2535 while (p
< buf
+ buflen
) {
2536 *(pages
++) = virt_to_page(p
);
2537 p
+= PAGE_CACHE_SIZE
;
2541 struct nfs4_cached_acl
{
2547 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
2549 struct nfs_inode
*nfsi
= NFS_I(inode
);
2551 spin_lock(&inode
->i_lock
);
2552 kfree(nfsi
->nfs4_acl
);
2553 nfsi
->nfs4_acl
= acl
;
2554 spin_unlock(&inode
->i_lock
);
2557 static void nfs4_zap_acl_attr(struct inode
*inode
)
2559 nfs4_set_cached_acl(inode
, NULL
);
2562 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
2564 struct nfs_inode
*nfsi
= NFS_I(inode
);
2565 struct nfs4_cached_acl
*acl
;
2568 spin_lock(&inode
->i_lock
);
2569 acl
= nfsi
->nfs4_acl
;
2572 if (buf
== NULL
) /* user is just asking for length */
2574 if (acl
->cached
== 0)
2576 ret
= -ERANGE
; /* see getxattr(2) man page */
2577 if (acl
->len
> buflen
)
2579 memcpy(buf
, acl
->data
, acl
->len
);
2583 spin_unlock(&inode
->i_lock
);
2587 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
2589 struct nfs4_cached_acl
*acl
;
2591 if (buf
&& acl_len
<= PAGE_SIZE
) {
2592 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
2596 memcpy(acl
->data
, buf
, acl_len
);
2598 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
2605 nfs4_set_cached_acl(inode
, acl
);
2608 static inline ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2610 struct page
*pages
[NFS4ACL_MAXPAGES
];
2611 struct nfs_getaclargs args
= {
2612 .fh
= NFS_FH(inode
),
2616 size_t resp_len
= buflen
;
2618 struct rpc_message msg
= {
2619 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
2621 .rpc_resp
= &resp_len
,
2623 struct page
*localpage
= NULL
;
2626 if (buflen
< PAGE_SIZE
) {
2627 /* As long as we're doing a round trip to the server anyway,
2628 * let's be prepared for a page of acl data. */
2629 localpage
= alloc_page(GFP_KERNEL
);
2630 resp_buf
= page_address(localpage
);
2631 if (localpage
== NULL
)
2633 args
.acl_pages
[0] = localpage
;
2634 args
.acl_pgbase
= 0;
2635 resp_len
= args
.acl_len
= PAGE_SIZE
;
2638 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
2640 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2643 if (resp_len
> args
.acl_len
)
2644 nfs4_write_cached_acl(inode
, NULL
, resp_len
);
2646 nfs4_write_cached_acl(inode
, resp_buf
, resp_len
);
2649 if (resp_len
> buflen
)
2652 memcpy(buf
, resp_buf
, resp_len
);
2657 __free_page(localpage
);
2661 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
2663 struct nfs_server
*server
= NFS_SERVER(inode
);
2666 if (!nfs4_server_supports_acls(server
))
2668 ret
= nfs_revalidate_inode(server
, inode
);
2671 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
2674 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
2677 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2679 struct nfs_server
*server
= NFS_SERVER(inode
);
2680 struct page
*pages
[NFS4ACL_MAXPAGES
];
2681 struct nfs_setaclargs arg
= {
2682 .fh
= NFS_FH(inode
),
2686 struct rpc_message msg
= {
2687 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
2693 if (!nfs4_server_supports_acls(server
))
2695 nfs_inode_return_delegation(inode
);
2696 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
2697 ret
= rpc_call_sync(NFS_SERVER(inode
)->client
, &msg
, 0);
2699 nfs4_write_cached_acl(inode
, buf
, buflen
);
2704 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
)
2706 struct nfs4_client
*clp
= server
->nfs4_state
;
2708 if (!clp
|| task
->tk_status
>= 0)
2710 switch(task
->tk_status
) {
2711 case -NFS4ERR_STALE_CLIENTID
:
2712 case -NFS4ERR_STALE_STATEID
:
2713 case -NFS4ERR_EXPIRED
:
2714 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
, NULL
);
2715 nfs4_schedule_state_recovery(clp
);
2716 if (test_bit(NFS4CLNT_STATE_RECOVER
, &clp
->cl_state
) == 0)
2717 rpc_wake_up_task(task
);
2718 task
->tk_status
= 0;
2720 case -NFS4ERR_DELAY
:
2721 nfs_inc_server_stats((struct nfs_server
*) server
,
2723 case -NFS4ERR_GRACE
:
2724 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
2725 task
->tk_status
= 0;
2727 case -NFS4ERR_OLD_STATEID
:
2728 task
->tk_status
= 0;
2731 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
2735 static int nfs4_wait_bit_interruptible(void *word
)
2737 if (signal_pending(current
))
2738 return -ERESTARTSYS
;
2743 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs4_client
*clp
)
2750 rpc_clnt_sigmask(clnt
, &oldset
);
2751 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_STATE_RECOVER
,
2752 nfs4_wait_bit_interruptible
,
2753 TASK_INTERRUPTIBLE
);
2754 rpc_clnt_sigunmask(clnt
, &oldset
);
2758 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
2766 *timeout
= NFS4_POLL_RETRY_MIN
;
2767 if (*timeout
> NFS4_POLL_RETRY_MAX
)
2768 *timeout
= NFS4_POLL_RETRY_MAX
;
2769 rpc_clnt_sigmask(clnt
, &oldset
);
2770 if (clnt
->cl_intr
) {
2771 schedule_timeout_interruptible(*timeout
);
2775 schedule_timeout_uninterruptible(*timeout
);
2776 rpc_clnt_sigunmask(clnt
, &oldset
);
2781 /* This is the error handling routine for processes that are allowed
2784 int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
2786 struct nfs4_client
*clp
= server
->nfs4_state
;
2787 int ret
= errorcode
;
2789 exception
->retry
= 0;
2793 case -NFS4ERR_STALE_CLIENTID
:
2794 case -NFS4ERR_STALE_STATEID
:
2795 case -NFS4ERR_EXPIRED
:
2796 nfs4_schedule_state_recovery(clp
);
2797 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
2799 exception
->retry
= 1;
2801 case -NFS4ERR_GRACE
:
2802 case -NFS4ERR_DELAY
:
2803 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
2806 case -NFS4ERR_OLD_STATEID
:
2807 exception
->retry
= 1;
2809 /* We failed to handle the error */
2810 return nfs4_map_errors(ret
);
2813 int nfs4_proc_setclientid(struct nfs4_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
2815 nfs4_verifier sc_verifier
;
2816 struct nfs4_setclientid setclientid
= {
2817 .sc_verifier
= &sc_verifier
,
2820 struct rpc_message msg
= {
2821 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
2822 .rpc_argp
= &setclientid
,
2830 p
= (u32
*)sc_verifier
.data
;
2831 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
2832 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
2835 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
2836 sizeof(setclientid
.sc_name
), "%s/%u.%u.%u.%u %s %u",
2837 clp
->cl_ipaddr
, NIPQUAD(clp
->cl_addr
.s_addr
),
2838 cred
->cr_ops
->cr_name
,
2839 clp
->cl_id_uniquifier
);
2840 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
2841 sizeof(setclientid
.sc_netid
), "tcp");
2842 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
2843 sizeof(setclientid
.sc_uaddr
), "%s.%d.%d",
2844 clp
->cl_ipaddr
, port
>> 8, port
& 255);
2846 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2847 if (status
!= -NFS4ERR_CLID_INUSE
)
2852 ssleep(clp
->cl_lease_time
+ 1);
2854 if (++clp
->cl_id_uniquifier
== 0)
2860 static int _nfs4_proc_setclientid_confirm(struct nfs4_client
*clp
, struct rpc_cred
*cred
)
2862 struct nfs_fsinfo fsinfo
;
2863 struct rpc_message msg
= {
2864 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
2866 .rpc_resp
= &fsinfo
,
2873 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2875 spin_lock(&clp
->cl_lock
);
2876 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
2877 clp
->cl_last_renewal
= now
;
2878 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
2879 spin_unlock(&clp
->cl_lock
);
2884 int nfs4_proc_setclientid_confirm(struct nfs4_client
*clp
, struct rpc_cred
*cred
)
2889 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
2893 case -NFS4ERR_RESOURCE
:
2894 /* The IBM lawyers misread another document! */
2895 case -NFS4ERR_DELAY
:
2896 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
2902 struct nfs4_delegreturndata
{
2903 struct nfs4_delegreturnargs args
;
2904 struct nfs4_delegreturnres res
;
2906 nfs4_stateid stateid
;
2907 struct rpc_cred
*cred
;
2908 unsigned long timestamp
;
2909 struct nfs_fattr fattr
;
2913 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *calldata
)
2915 struct nfs4_delegreturndata
*data
= calldata
;
2916 struct rpc_message msg
= {
2917 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
2918 .rpc_argp
= &data
->args
,
2919 .rpc_resp
= &data
->res
,
2920 .rpc_cred
= data
->cred
,
2922 nfs_fattr_init(data
->res
.fattr
);
2923 rpc_call_setup(task
, &msg
, 0);
2926 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
2928 struct nfs4_delegreturndata
*data
= calldata
;
2929 data
->rpc_status
= task
->tk_status
;
2930 if (data
->rpc_status
== 0)
2931 renew_lease(data
->res
.server
, data
->timestamp
);
2934 static void nfs4_delegreturn_release(void *calldata
)
2936 struct nfs4_delegreturndata
*data
= calldata
;
2938 put_rpccred(data
->cred
);
2942 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
2943 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
2944 .rpc_call_done
= nfs4_delegreturn_done
,
2945 .rpc_release
= nfs4_delegreturn_release
,
2948 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2950 struct nfs4_delegreturndata
*data
;
2951 struct nfs_server
*server
= NFS_SERVER(inode
);
2952 struct rpc_task
*task
;
2955 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
2958 data
->args
.fhandle
= &data
->fh
;
2959 data
->args
.stateid
= &data
->stateid
;
2960 data
->args
.bitmask
= server
->attr_bitmask
;
2961 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
2962 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
2963 data
->res
.fattr
= &data
->fattr
;
2964 data
->res
.server
= server
;
2965 data
->cred
= get_rpccred(cred
);
2966 data
->timestamp
= jiffies
;
2967 data
->rpc_status
= 0;
2969 task
= rpc_run_task(NFS_CLIENT(inode
), RPC_TASK_ASYNC
, &nfs4_delegreturn_ops
, data
);
2971 return PTR_ERR(task
);
2972 status
= nfs4_wait_for_completion_rpc_task(task
);
2974 status
= data
->rpc_status
;
2976 nfs_post_op_update_inode(inode
, &data
->fattr
);
2978 rpc_release_task(task
);
2982 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2984 struct nfs_server
*server
= NFS_SERVER(inode
);
2985 struct nfs4_exception exception
= { };
2988 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
);
2990 case -NFS4ERR_STALE_STATEID
:
2991 case -NFS4ERR_EXPIRED
:
2992 nfs4_schedule_state_recovery(server
->nfs4_state
);
2996 err
= nfs4_handle_exception(server
, err
, &exception
);
2997 } while (exception
.retry
);
3001 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3002 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3005 * sleep, with exponential backoff, and retry the LOCK operation.
3007 static unsigned long
3008 nfs4_set_lock_task_retry(unsigned long timeout
)
3010 schedule_timeout_interruptible(timeout
);
3012 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3013 return NFS4_LOCK_MAXTIMEOUT
;
3017 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3019 struct inode
*inode
= state
->inode
;
3020 struct nfs_server
*server
= NFS_SERVER(inode
);
3021 struct nfs4_client
*clp
= server
->nfs4_state
;
3022 struct nfs_lockt_args arg
= {
3023 .fh
= NFS_FH(inode
),
3026 struct nfs_lockt_res res
= {
3029 struct rpc_message msg
= {
3030 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3033 .rpc_cred
= state
->owner
->so_cred
,
3035 struct nfs4_lock_state
*lsp
;
3038 down_read(&clp
->cl_sem
);
3039 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3040 status
= nfs4_set_lock_state(state
, request
);
3043 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3044 arg
.lock_owner
.id
= lsp
->ls_id
;
3045 status
= rpc_call_sync(server
->client
, &msg
, 0);
3048 request
->fl_type
= F_UNLCK
;
3050 case -NFS4ERR_DENIED
:
3054 up_read(&clp
->cl_sem
);
3058 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3060 struct nfs4_exception exception
= { };
3064 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3065 _nfs4_proc_getlk(state
, cmd
, request
),
3067 } while (exception
.retry
);
3071 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3074 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3076 res
= posix_lock_file_wait(file
, fl
);
3079 res
= flock_lock_file_wait(file
, fl
);
3085 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n",
3090 struct nfs4_unlockdata
{
3091 struct nfs_locku_args arg
;
3092 struct nfs_locku_res res
;
3093 struct nfs4_lock_state
*lsp
;
3094 struct nfs_open_context
*ctx
;
3095 struct file_lock fl
;
3096 const struct nfs_server
*server
;
3097 unsigned long timestamp
;
3100 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3101 struct nfs_open_context
*ctx
,
3102 struct nfs4_lock_state
*lsp
,
3103 struct nfs_seqid
*seqid
)
3105 struct nfs4_unlockdata
*p
;
3106 struct inode
*inode
= lsp
->ls_state
->inode
;
3108 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
3111 p
->arg
.fh
= NFS_FH(inode
);
3113 p
->arg
.seqid
= seqid
;
3114 p
->arg
.stateid
= &lsp
->ls_stateid
;
3116 atomic_inc(&lsp
->ls_count
);
3117 /* Ensure we don't close file until we're done freeing locks! */
3118 p
->ctx
= get_nfs_open_context(ctx
);
3119 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3120 p
->server
= NFS_SERVER(inode
);
3124 static void nfs4_locku_release_calldata(void *data
)
3126 struct nfs4_unlockdata
*calldata
= data
;
3127 nfs_free_seqid(calldata
->arg
.seqid
);
3128 nfs4_put_lock_state(calldata
->lsp
);
3129 put_nfs_open_context(calldata
->ctx
);
3133 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3135 struct nfs4_unlockdata
*calldata
= data
;
3137 if (RPC_ASSASSINATED(task
))
3139 nfs_increment_lock_seqid(task
->tk_status
, calldata
->arg
.seqid
);
3140 switch (task
->tk_status
) {
3142 memcpy(calldata
->lsp
->ls_stateid
.data
,
3143 calldata
->res
.stateid
.data
,
3144 sizeof(calldata
->lsp
->ls_stateid
.data
));
3145 renew_lease(calldata
->server
, calldata
->timestamp
);
3147 case -NFS4ERR_STALE_STATEID
:
3148 case -NFS4ERR_EXPIRED
:
3149 nfs4_schedule_state_recovery(calldata
->server
->nfs4_state
);
3152 if (nfs4_async_handle_error(task
, calldata
->server
) == -EAGAIN
) {
3153 rpc_restart_call(task
);
3158 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3160 struct nfs4_unlockdata
*calldata
= data
;
3161 struct rpc_message msg
= {
3162 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3163 .rpc_argp
= &calldata
->arg
,
3164 .rpc_resp
= &calldata
->res
,
3165 .rpc_cred
= calldata
->lsp
->ls_state
->owner
->so_cred
,
3168 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3170 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3171 /* Note: exit _without_ running nfs4_locku_done */
3172 task
->tk_action
= NULL
;
3175 calldata
->timestamp
= jiffies
;
3176 rpc_call_setup(task
, &msg
, 0);
3179 static const struct rpc_call_ops nfs4_locku_ops
= {
3180 .rpc_call_prepare
= nfs4_locku_prepare
,
3181 .rpc_call_done
= nfs4_locku_done
,
3182 .rpc_release
= nfs4_locku_release_calldata
,
3185 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3186 struct nfs_open_context
*ctx
,
3187 struct nfs4_lock_state
*lsp
,
3188 struct nfs_seqid
*seqid
)
3190 struct nfs4_unlockdata
*data
;
3192 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3194 nfs_free_seqid(seqid
);
3195 return ERR_PTR(-ENOMEM
);
3198 /* Unlock _before_ we do the RPC call */
3199 do_vfs_lock(fl
->fl_file
, fl
);
3200 return rpc_run_task(NFS_CLIENT(lsp
->ls_state
->inode
), RPC_TASK_ASYNC
, &nfs4_locku_ops
, data
);
3203 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3205 struct nfs_seqid
*seqid
;
3206 struct nfs4_lock_state
*lsp
;
3207 struct rpc_task
*task
;
3210 /* Is this a delegated lock? */
3211 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3213 /* Is this open_owner holding any locks on the server? */
3214 if (test_bit(LK_STATE_IN_USE
, &state
->flags
) == 0)
3217 status
= nfs4_set_lock_state(state
, request
);
3220 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3222 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3225 task
= nfs4_do_unlck(request
, request
->fl_file
->private_data
, lsp
, seqid
);
3226 status
= PTR_ERR(task
);
3229 status
= nfs4_wait_for_completion_rpc_task(task
);
3230 rpc_release_task(task
);
3233 do_vfs_lock(request
->fl_file
, request
);
3237 struct nfs4_lockdata
{
3238 struct nfs_lock_args arg
;
3239 struct nfs_lock_res res
;
3240 struct nfs4_lock_state
*lsp
;
3241 struct nfs_open_context
*ctx
;
3242 struct file_lock fl
;
3243 unsigned long timestamp
;
3248 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3249 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3251 struct nfs4_lockdata
*p
;
3252 struct inode
*inode
= lsp
->ls_state
->inode
;
3253 struct nfs_server
*server
= NFS_SERVER(inode
);
3255 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3259 p
->arg
.fh
= NFS_FH(inode
);
3261 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3262 if (p
->arg
.lock_seqid
== NULL
)
3264 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3265 p
->arg
.lock_owner
.clientid
= server
->nfs4_state
->cl_clientid
;
3266 p
->arg
.lock_owner
.id
= lsp
->ls_id
;
3268 atomic_inc(&lsp
->ls_count
);
3269 p
->ctx
= get_nfs_open_context(ctx
);
3270 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3277 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3279 struct nfs4_lockdata
*data
= calldata
;
3280 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3281 struct nfs4_state_owner
*sp
= state
->owner
;
3282 struct rpc_message msg
= {
3283 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3284 .rpc_argp
= &data
->arg
,
3285 .rpc_resp
= &data
->res
,
3286 .rpc_cred
= sp
->so_cred
,
3289 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3291 dprintk("%s: begin!\n", __FUNCTION__
);
3292 /* Do we need to do an open_to_lock_owner? */
3293 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3294 data
->arg
.open_seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
3295 if (data
->arg
.open_seqid
== NULL
) {
3296 data
->rpc_status
= -ENOMEM
;
3297 task
->tk_action
= NULL
;
3300 data
->arg
.open_stateid
= &state
->stateid
;
3301 data
->arg
.new_lock_owner
= 1;
3303 data
->timestamp
= jiffies
;
3304 rpc_call_setup(task
, &msg
, 0);
3306 dprintk("%s: done!, ret = %d\n", __FUNCTION__
, data
->rpc_status
);
3309 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3311 struct nfs4_lockdata
*data
= calldata
;
3313 dprintk("%s: begin!\n", __FUNCTION__
);
3315 data
->rpc_status
= task
->tk_status
;
3316 if (RPC_ASSASSINATED(task
))
3318 if (data
->arg
.new_lock_owner
!= 0) {
3319 nfs_increment_open_seqid(data
->rpc_status
, data
->arg
.open_seqid
);
3320 if (data
->rpc_status
== 0)
3321 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3325 if (data
->rpc_status
== 0) {
3326 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3327 sizeof(data
->lsp
->ls_stateid
.data
));
3328 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3329 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
3331 nfs_increment_lock_seqid(data
->rpc_status
, data
->arg
.lock_seqid
);
3333 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, data
->rpc_status
);
3336 static void nfs4_lock_release(void *calldata
)
3338 struct nfs4_lockdata
*data
= calldata
;
3340 dprintk("%s: begin!\n", __FUNCTION__
);
3341 if (data
->arg
.open_seqid
!= NULL
)
3342 nfs_free_seqid(data
->arg
.open_seqid
);
3343 if (data
->cancelled
!= 0) {
3344 struct rpc_task
*task
;
3345 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3346 data
->arg
.lock_seqid
);
3348 rpc_release_task(task
);
3349 dprintk("%s: cancelling lock!\n", __FUNCTION__
);
3351 nfs_free_seqid(data
->arg
.lock_seqid
);
3352 nfs4_put_lock_state(data
->lsp
);
3353 put_nfs_open_context(data
->ctx
);
3355 dprintk("%s: done!\n", __FUNCTION__
);
3358 static const struct rpc_call_ops nfs4_lock_ops
= {
3359 .rpc_call_prepare
= nfs4_lock_prepare
,
3360 .rpc_call_done
= nfs4_lock_done
,
3361 .rpc_release
= nfs4_lock_release
,
3364 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3366 struct nfs4_lockdata
*data
;
3367 struct rpc_task
*task
;
3370 dprintk("%s: begin!\n", __FUNCTION__
);
3371 data
= nfs4_alloc_lockdata(fl
, fl
->fl_file
->private_data
,
3372 fl
->fl_u
.nfs4_fl
.owner
);
3376 data
->arg
.block
= 1;
3378 data
->arg
.reclaim
= 1;
3379 task
= rpc_run_task(NFS_CLIENT(state
->inode
), RPC_TASK_ASYNC
,
3380 &nfs4_lock_ops
, data
);
3382 return PTR_ERR(task
);
3383 ret
= nfs4_wait_for_completion_rpc_task(task
);
3385 ret
= data
->rpc_status
;
3386 if (ret
== -NFS4ERR_DENIED
)
3389 data
->cancelled
= 1;
3390 rpc_release_task(task
);
3391 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, ret
);
3395 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
3397 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3398 struct nfs4_exception exception
= { };
3401 /* Cache the lock if possible... */
3402 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3405 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
3406 if (err
!= -NFS4ERR_DELAY
)
3408 nfs4_handle_exception(server
, err
, &exception
);
3409 } while (exception
.retry
);
3413 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
3415 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3416 struct nfs4_exception exception
= { };
3419 err
= nfs4_set_lock_state(state
, request
);
3423 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
3424 if (err
!= -NFS4ERR_DELAY
)
3426 nfs4_handle_exception(server
, err
, &exception
);
3427 } while (exception
.retry
);
3431 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3433 struct nfs4_client
*clp
= state
->owner
->so_client
;
3436 /* Is this a delegated open? */
3437 if (NFS_I(state
->inode
)->delegation_state
!= 0) {
3438 /* Yes: cache locks! */
3439 status
= do_vfs_lock(request
->fl_file
, request
);
3440 /* ...but avoid races with delegation recall... */
3441 if (status
< 0 || test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3444 down_read(&clp
->cl_sem
);
3445 status
= nfs4_set_lock_state(state
, request
);
3448 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
3451 /* Note: we always want to sleep here! */
3452 request
->fl_flags
|= FL_SLEEP
;
3453 if (do_vfs_lock(request
->fl_file
, request
) < 0)
3454 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __FUNCTION__
);
3456 up_read(&clp
->cl_sem
);
3460 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3462 struct nfs4_exception exception
= { };
3466 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3467 _nfs4_proc_setlk(state
, cmd
, request
),
3469 } while (exception
.retry
);
3474 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
3476 struct nfs_open_context
*ctx
;
3477 struct nfs4_state
*state
;
3478 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
3481 /* verify open state */
3482 ctx
= (struct nfs_open_context
*)filp
->private_data
;
3485 if (request
->fl_start
< 0 || request
->fl_end
< 0)
3489 return nfs4_proc_getlk(state
, F_GETLK
, request
);
3491 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
3494 if (request
->fl_type
== F_UNLCK
)
3495 return nfs4_proc_unlck(state
, cmd
, request
);
3498 status
= nfs4_proc_setlk(state
, cmd
, request
);
3499 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
3501 timeout
= nfs4_set_lock_task_retry(timeout
);
3502 status
= -ERESTARTSYS
;
3505 } while(status
< 0);
3509 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
3511 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3512 struct nfs4_exception exception
= { };
3515 err
= nfs4_set_lock_state(state
, fl
);
3519 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
3520 if (err
!= -NFS4ERR_DELAY
)
3522 err
= nfs4_handle_exception(server
, err
, &exception
);
3523 } while (exception
.retry
);
3528 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
3530 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
3531 size_t buflen
, int flags
)
3533 struct inode
*inode
= dentry
->d_inode
;
3535 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3538 if (!S_ISREG(inode
->i_mode
) &&
3539 (!S_ISDIR(inode
->i_mode
) || inode
->i_mode
& S_ISVTX
))
3542 return nfs4_proc_set_acl(inode
, buf
, buflen
);
3545 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
3546 * and that's what we'll do for e.g. user attributes that haven't been set.
3547 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
3548 * attributes in kernel-managed attribute namespaces. */
3549 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
3552 struct inode
*inode
= dentry
->d_inode
;
3554 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3557 return nfs4_proc_get_acl(inode
, buf
, buflen
);
3560 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
3562 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
3564 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
3566 if (buf
&& buflen
< len
)
3569 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
3573 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops
= {
3574 .recover_open
= nfs4_open_reclaim
,
3575 .recover_lock
= nfs4_lock_reclaim
,
3578 struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops
= {
3579 .recover_open
= nfs4_open_expired
,
3580 .recover_lock
= nfs4_lock_expired
,
3583 static struct inode_operations nfs4_file_inode_operations
= {
3584 .permission
= nfs_permission
,
3585 .getattr
= nfs_getattr
,
3586 .setattr
= nfs_setattr
,
3587 .getxattr
= nfs4_getxattr
,
3588 .setxattr
= nfs4_setxattr
,
3589 .listxattr
= nfs4_listxattr
,
3592 struct nfs_rpc_ops nfs_v4_clientops
= {
3593 .version
= 4, /* protocol version */
3594 .dentry_ops
= &nfs4_dentry_operations
,
3595 .dir_inode_ops
= &nfs4_dir_inode_operations
,
3596 .file_inode_ops
= &nfs4_file_inode_operations
,
3597 .getroot
= nfs4_proc_get_root
,
3598 .getattr
= nfs4_proc_getattr
,
3599 .setattr
= nfs4_proc_setattr
,
3600 .lookup
= nfs4_proc_lookup
,
3601 .access
= nfs4_proc_access
,
3602 .readlink
= nfs4_proc_readlink
,
3603 .read
= nfs4_proc_read
,
3604 .write
= nfs4_proc_write
,
3605 .commit
= nfs4_proc_commit
,
3606 .create
= nfs4_proc_create
,
3607 .remove
= nfs4_proc_remove
,
3608 .unlink_setup
= nfs4_proc_unlink_setup
,
3609 .unlink_done
= nfs4_proc_unlink_done
,
3610 .rename
= nfs4_proc_rename
,
3611 .link
= nfs4_proc_link
,
3612 .symlink
= nfs4_proc_symlink
,
3613 .mkdir
= nfs4_proc_mkdir
,
3614 .rmdir
= nfs4_proc_remove
,
3615 .readdir
= nfs4_proc_readdir
,
3616 .mknod
= nfs4_proc_mknod
,
3617 .statfs
= nfs4_proc_statfs
,
3618 .fsinfo
= nfs4_proc_fsinfo
,
3619 .pathconf
= nfs4_proc_pathconf
,
3620 .decode_dirent
= nfs4_decode_dirent
,
3621 .read_setup
= nfs4_proc_read_setup
,
3622 .read_done
= nfs4_read_done
,
3623 .write_setup
= nfs4_proc_write_setup
,
3624 .write_done
= nfs4_write_done
,
3625 .commit_setup
= nfs4_proc_commit_setup
,
3626 .commit_done
= nfs4_commit_done
,
3627 .file_open
= nfs_open
,
3628 .file_release
= nfs_release
,
3629 .lock
= nfs4_proc_lock
,
3630 .clear_acl_cache
= nfs4_zap_acl_attr
,