4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/utsname.h>
40 #include <linux/delay.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/sunrpc/clnt.h>
44 #include <linux/nfs.h>
45 #include <linux/nfs4.h>
46 #include <linux/nfs_fs.h>
47 #include <linux/nfs_page.h>
48 #include <linux/smp_lock.h>
49 #include <linux/namei.h>
50 #include <linux/mount.h>
53 #include "delegation.h"
56 #define NFSDBG_FACILITY NFSDBG_PROC
58 #define NFS4_POLL_RETRY_MIN (HZ/10)
59 #define NFS4_POLL_RETRY_MAX (15*HZ)
62 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
63 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
64 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*);
65 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
);
66 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
);
67 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
);
69 /* Prevent leaks of NFSv4 errors into userland */
70 int nfs4_map_errors(int err
)
73 dprintk("%s could not handle NFSv4 error %d\n",
81 * This is our standard bitmap for GETATTR requests.
83 const u32 nfs4_fattr_bitmap
[2] = {
88 | FATTR4_WORD0_FILEID
,
90 | FATTR4_WORD1_NUMLINKS
92 | FATTR4_WORD1_OWNER_GROUP
94 | FATTR4_WORD1_SPACE_USED
95 | FATTR4_WORD1_TIME_ACCESS
96 | FATTR4_WORD1_TIME_METADATA
97 | FATTR4_WORD1_TIME_MODIFY
100 const u32 nfs4_statfs_bitmap
[2] = {
101 FATTR4_WORD0_FILES_AVAIL
102 | FATTR4_WORD0_FILES_FREE
103 | FATTR4_WORD0_FILES_TOTAL
,
104 FATTR4_WORD1_SPACE_AVAIL
105 | FATTR4_WORD1_SPACE_FREE
106 | FATTR4_WORD1_SPACE_TOTAL
109 const u32 nfs4_pathconf_bitmap
[2] = {
111 | FATTR4_WORD0_MAXNAME
,
115 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
116 | FATTR4_WORD0_MAXREAD
117 | FATTR4_WORD0_MAXWRITE
118 | FATTR4_WORD0_LEASE_TIME
,
122 const u32 nfs4_fs_locations_bitmap
[2] = {
124 | FATTR4_WORD0_CHANGE
127 | FATTR4_WORD0_FILEID
128 | FATTR4_WORD0_FS_LOCATIONS
,
130 | FATTR4_WORD1_NUMLINKS
132 | FATTR4_WORD1_OWNER_GROUP
133 | FATTR4_WORD1_RAWDEV
134 | FATTR4_WORD1_SPACE_USED
135 | FATTR4_WORD1_TIME_ACCESS
136 | FATTR4_WORD1_TIME_METADATA
137 | FATTR4_WORD1_TIME_MODIFY
138 | FATTR4_WORD1_MOUNTED_ON_FILEID
141 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
142 struct nfs4_readdir_arg
*readdir
)
146 BUG_ON(readdir
->count
< 80);
148 readdir
->cookie
= cookie
;
149 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
154 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
159 * NFSv4 servers do not return entries for '.' and '..'
160 * Therefore, we fake these entries here. We let '.'
161 * have cookie 0 and '..' have cookie 1. Note that
162 * when talking to the server, we always send cookie 0
165 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
168 *p
++ = xdr_one
; /* next */
169 *p
++ = xdr_zero
; /* cookie, first word */
170 *p
++ = xdr_one
; /* cookie, second word */
171 *p
++ = xdr_one
; /* entry len */
172 memcpy(p
, ".\0\0\0", 4); /* entry */
174 *p
++ = xdr_one
; /* bitmap length */
175 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
176 *p
++ = htonl(8); /* attribute buffer length */
177 p
= xdr_encode_hyper(p
, dentry
->d_inode
->i_ino
);
180 *p
++ = xdr_one
; /* next */
181 *p
++ = xdr_zero
; /* cookie, first word */
182 *p
++ = xdr_two
; /* cookie, second word */
183 *p
++ = xdr_two
; /* entry len */
184 memcpy(p
, "..\0\0", 4); /* entry */
186 *p
++ = xdr_one
; /* bitmap length */
187 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
188 *p
++ = htonl(8); /* attribute buffer length */
189 p
= xdr_encode_hyper(p
, dentry
->d_parent
->d_inode
->i_ino
);
191 readdir
->pgbase
= (char *)p
- (char *)start
;
192 readdir
->count
-= readdir
->pgbase
;
193 kunmap_atomic(start
, KM_USER0
);
196 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
198 struct nfs_client
*clp
= server
->nfs_client
;
199 spin_lock(&clp
->cl_lock
);
200 if (time_before(clp
->cl_last_renewal
,timestamp
))
201 clp
->cl_last_renewal
= timestamp
;
202 spin_unlock(&clp
->cl_lock
);
205 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
207 struct nfs_inode
*nfsi
= NFS_I(dir
);
209 spin_lock(&dir
->i_lock
);
210 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
211 if (cinfo
->before
== nfsi
->change_attr
&& cinfo
->atomic
)
212 nfsi
->change_attr
= cinfo
->after
;
213 spin_unlock(&dir
->i_lock
);
216 struct nfs4_opendata
{
218 struct nfs_openargs o_arg
;
219 struct nfs_openres o_res
;
220 struct nfs_open_confirmargs c_arg
;
221 struct nfs_open_confirmres c_res
;
222 struct nfs_fattr f_attr
;
223 struct nfs_fattr dir_attr
;
226 struct nfs4_state_owner
*owner
;
228 unsigned long timestamp
;
233 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
234 struct nfs4_state_owner
*sp
, int flags
,
235 const struct iattr
*attrs
)
237 struct dentry
*parent
= dget_parent(path
->dentry
);
238 struct inode
*dir
= parent
->d_inode
;
239 struct nfs_server
*server
= NFS_SERVER(dir
);
240 struct nfs4_opendata
*p
;
242 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
245 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
246 if (p
->o_arg
.seqid
== NULL
)
248 p
->path
.mnt
= mntget(path
->mnt
);
249 p
->path
.dentry
= dget(path
->dentry
);
252 atomic_inc(&sp
->so_count
);
253 p
->o_arg
.fh
= NFS_FH(dir
);
254 p
->o_arg
.open_flags
= flags
,
255 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
256 p
->o_arg
.id
= sp
->so_owner_id
.id
;
257 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
258 p
->o_arg
.server
= server
;
259 p
->o_arg
.bitmask
= server
->attr_bitmask
;
260 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
261 p
->o_res
.f_attr
= &p
->f_attr
;
262 p
->o_res
.dir_attr
= &p
->dir_attr
;
263 p
->o_res
.server
= server
;
264 nfs_fattr_init(&p
->f_attr
);
265 nfs_fattr_init(&p
->dir_attr
);
266 if (flags
& O_EXCL
) {
267 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
270 } else if (flags
& O_CREAT
) {
271 p
->o_arg
.u
.attrs
= &p
->attrs
;
272 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
274 p
->c_arg
.fh
= &p
->o_res
.fh
;
275 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
276 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
286 static void nfs4_opendata_free(struct kref
*kref
)
288 struct nfs4_opendata
*p
= container_of(kref
,
289 struct nfs4_opendata
, kref
);
291 nfs_free_seqid(p
->o_arg
.seqid
);
292 nfs4_put_state_owner(p
->owner
);
294 dput(p
->path
.dentry
);
299 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
302 kref_put(&p
->kref
, nfs4_opendata_free
);
305 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
310 rpc_clnt_sigmask(task
->tk_client
, &oldset
);
311 ret
= rpc_wait_for_completion_task(task
);
312 rpc_clnt_sigunmask(task
->tk_client
, &oldset
);
316 static inline void update_open_stateflags(struct nfs4_state
*state
, mode_t open_flags
)
318 switch (open_flags
) {
325 case FMODE_READ
|FMODE_WRITE
:
330 static void update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, int open_flags
)
332 struct inode
*inode
= state
->inode
;
334 open_flags
&= (FMODE_READ
|FMODE_WRITE
);
335 /* Protect against nfs4_find_state_byowner() */
336 spin_lock(&state
->owner
->so_lock
);
337 spin_lock(&inode
->i_lock
);
338 memcpy(&state
->stateid
, stateid
, sizeof(state
->stateid
));
339 update_open_stateflags(state
, open_flags
);
340 nfs4_state_set_mode_locked(state
, state
->state
| open_flags
);
341 spin_unlock(&inode
->i_lock
);
342 spin_unlock(&state
->owner
->so_lock
);
345 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
348 struct nfs4_state
*state
= NULL
;
350 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
352 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
355 state
= nfs4_get_open_state(inode
, data
->owner
);
358 update_open_stateid(state
, &data
->o_res
.stateid
, data
->o_arg
.open_flags
);
365 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
367 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
368 struct nfs_open_context
*ctx
;
370 spin_lock(&state
->inode
->i_lock
);
371 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
372 if (ctx
->state
!= state
)
374 get_nfs_open_context(ctx
);
375 spin_unlock(&state
->inode
->i_lock
);
378 spin_unlock(&state
->inode
->i_lock
);
379 return ERR_PTR(-ENOENT
);
382 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, mode_t openflags
, nfs4_stateid
*stateid
)
386 opendata
->o_arg
.open_flags
= openflags
;
387 ret
= _nfs4_proc_open(opendata
);
390 memcpy(stateid
->data
, opendata
->o_res
.stateid
.data
,
391 sizeof(stateid
->data
));
395 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
397 nfs4_stateid stateid
;
398 struct nfs4_state
*newstate
;
403 /* memory barrier prior to reading state->n_* */
405 if (state
->n_rdwr
!= 0) {
406 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &stateid
);
409 mode
|= FMODE_READ
|FMODE_WRITE
;
410 if (opendata
->o_res
.delegation_type
!= 0)
411 delegation
= opendata
->o_res
.delegation_type
;
414 if (state
->n_wronly
!= 0) {
415 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &stateid
);
419 if (opendata
->o_res
.delegation_type
!= 0)
420 delegation
= opendata
->o_res
.delegation_type
;
423 if (state
->n_rdonly
!= 0) {
424 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &stateid
);
429 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
432 if (opendata
->o_res
.delegation_type
== 0)
433 opendata
->o_res
.delegation_type
= delegation
;
434 opendata
->o_arg
.open_flags
|= mode
;
435 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
436 if (newstate
!= NULL
) {
437 if (opendata
->o_res
.delegation_type
!= 0) {
438 struct nfs_inode
*nfsi
= NFS_I(newstate
->inode
);
439 int delegation_flags
= 0;
440 if (nfsi
->delegation
)
441 delegation_flags
= nfsi
->delegation
->flags
;
442 if (!(delegation_flags
& NFS_DELEGATION_NEED_RECLAIM
))
443 nfs_inode_set_delegation(newstate
->inode
,
444 opendata
->owner
->so_cred
,
447 nfs_inode_reclaim_delegation(newstate
->inode
,
448 opendata
->owner
->so_cred
,
451 nfs4_close_state(&opendata
->path
, newstate
, opendata
->o_arg
.open_flags
);
453 if (newstate
!= state
)
460 * reclaim state on the server after a reboot.
462 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
464 struct nfs_delegation
*delegation
= NFS_I(state
->inode
)->delegation
;
465 struct nfs4_opendata
*opendata
;
466 int delegation_type
= 0;
469 if (delegation
!= NULL
) {
470 if (!(delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)) {
471 memcpy(&state
->stateid
, &delegation
->stateid
,
472 sizeof(state
->stateid
));
473 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
476 delegation_type
= delegation
->type
;
478 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, NULL
);
479 if (opendata
== NULL
)
481 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
482 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
483 nfs_copy_fh(&opendata
->o_res
.fh
, opendata
->o_arg
.fh
);
484 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
485 status
= nfs4_open_recover(opendata
, state
);
486 nfs4_opendata_put(opendata
);
490 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
492 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
493 struct nfs4_exception exception
= { };
496 err
= _nfs4_do_open_reclaim(ctx
, state
);
497 if (err
!= -NFS4ERR_DELAY
)
499 nfs4_handle_exception(server
, err
, &exception
);
500 } while (exception
.retry
);
504 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
506 struct nfs_open_context
*ctx
;
509 ctx
= nfs4_state_find_open_context(state
);
512 ret
= nfs4_do_open_reclaim(ctx
, state
);
513 put_nfs_open_context(ctx
);
517 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
519 struct nfs4_state_owner
*sp
= state
->owner
;
520 struct nfs4_opendata
*opendata
;
523 if (!test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
525 opendata
= nfs4_opendata_alloc(&ctx
->path
, sp
, 0, NULL
);
526 if (opendata
== NULL
)
528 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
529 memcpy(opendata
->o_arg
.u
.delegation
.data
, state
->stateid
.data
,
530 sizeof(opendata
->o_arg
.u
.delegation
.data
));
531 ret
= nfs4_open_recover(opendata
, state
);
532 nfs4_opendata_put(opendata
);
536 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
538 struct nfs4_exception exception
= { };
539 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
542 err
= _nfs4_open_delegation_recall(ctx
, state
);
546 case -NFS4ERR_STALE_CLIENTID
:
547 case -NFS4ERR_STALE_STATEID
:
548 case -NFS4ERR_EXPIRED
:
549 /* Don't recall a delegation if it was lost */
550 nfs4_schedule_state_recovery(server
->nfs_client
);
553 err
= nfs4_handle_exception(server
, err
, &exception
);
554 } while (exception
.retry
);
558 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
560 struct nfs4_opendata
*data
= calldata
;
561 struct rpc_message msg
= {
562 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
563 .rpc_argp
= &data
->c_arg
,
564 .rpc_resp
= &data
->c_res
,
565 .rpc_cred
= data
->owner
->so_cred
,
567 data
->timestamp
= jiffies
;
568 rpc_call_setup(task
, &msg
, 0);
571 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
573 struct nfs4_opendata
*data
= calldata
;
575 data
->rpc_status
= task
->tk_status
;
576 if (RPC_ASSASSINATED(task
))
578 if (data
->rpc_status
== 0) {
579 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
580 sizeof(data
->o_res
.stateid
.data
));
581 renew_lease(data
->o_res
.server
, data
->timestamp
);
583 nfs_increment_open_seqid(data
->rpc_status
, data
->c_arg
.seqid
);
584 nfs_confirm_seqid(&data
->owner
->so_seqid
, data
->rpc_status
);
587 static void nfs4_open_confirm_release(void *calldata
)
589 struct nfs4_opendata
*data
= calldata
;
590 struct nfs4_state
*state
= NULL
;
592 /* If this request hasn't been cancelled, do nothing */
593 if (data
->cancelled
== 0)
595 /* In case of error, no cleanup! */
596 if (data
->rpc_status
!= 0)
598 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
599 state
= nfs4_opendata_to_nfs4_state(data
);
601 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
603 nfs4_opendata_put(data
);
606 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
607 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
608 .rpc_call_done
= nfs4_open_confirm_done
,
609 .rpc_release
= nfs4_open_confirm_release
,
613 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
615 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
617 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
618 struct rpc_task
*task
;
621 kref_get(&data
->kref
);
623 * If rpc_run_task() ends up calling ->rpc_release(), we
624 * want to ensure that it takes the 'error' code path.
626 data
->rpc_status
= -ENOMEM
;
627 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_confirm_ops
, data
);
629 return PTR_ERR(task
);
630 status
= nfs4_wait_for_completion_rpc_task(task
);
635 status
= data
->rpc_status
;
640 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
642 struct nfs4_opendata
*data
= calldata
;
643 struct nfs4_state_owner
*sp
= data
->owner
;
644 struct rpc_message msg
= {
645 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
646 .rpc_argp
= &data
->o_arg
,
647 .rpc_resp
= &data
->o_res
,
648 .rpc_cred
= sp
->so_cred
,
651 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
653 /* Update sequence id. */
654 data
->o_arg
.id
= sp
->so_owner_id
.id
;
655 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
656 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
657 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
658 data
->timestamp
= jiffies
;
659 rpc_call_setup(task
, &msg
, 0);
662 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
664 struct nfs4_opendata
*data
= calldata
;
666 data
->rpc_status
= task
->tk_status
;
667 if (RPC_ASSASSINATED(task
))
669 if (task
->tk_status
== 0) {
670 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
674 data
->rpc_status
= -ELOOP
;
677 data
->rpc_status
= -EISDIR
;
680 data
->rpc_status
= -ENOTDIR
;
682 renew_lease(data
->o_res
.server
, data
->timestamp
);
684 nfs_increment_open_seqid(data
->rpc_status
, data
->o_arg
.seqid
);
687 static void nfs4_open_release(void *calldata
)
689 struct nfs4_opendata
*data
= calldata
;
690 struct nfs4_state
*state
= NULL
;
692 /* If this request hasn't been cancelled, do nothing */
693 if (data
->cancelled
== 0)
695 /* In case of error, no cleanup! */
696 if (data
->rpc_status
!= 0)
698 /* In case we need an open_confirm, no cleanup! */
699 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
701 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
702 state
= nfs4_opendata_to_nfs4_state(data
);
704 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
706 nfs4_opendata_put(data
);
709 static const struct rpc_call_ops nfs4_open_ops
= {
710 .rpc_call_prepare
= nfs4_open_prepare
,
711 .rpc_call_done
= nfs4_open_done
,
712 .rpc_release
= nfs4_open_release
,
716 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
718 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
720 struct inode
*dir
= data
->dir
->d_inode
;
721 struct nfs_server
*server
= NFS_SERVER(dir
);
722 struct nfs_openargs
*o_arg
= &data
->o_arg
;
723 struct nfs_openres
*o_res
= &data
->o_res
;
724 struct rpc_task
*task
;
727 kref_get(&data
->kref
);
729 * If rpc_run_task() ends up calling ->rpc_release(), we
730 * want to ensure that it takes the 'error' code path.
732 data
->rpc_status
= -ENOMEM
;
733 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_ops
, data
);
735 return PTR_ERR(task
);
736 status
= nfs4_wait_for_completion_rpc_task(task
);
741 status
= data
->rpc_status
;
746 if (o_arg
->open_flags
& O_CREAT
) {
747 update_changeattr(dir
, &o_res
->cinfo
);
748 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
750 nfs_refresh_inode(dir
, o_res
->dir_attr
);
751 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
752 status
= _nfs4_proc_open_confirm(data
);
756 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
757 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
758 return server
->nfs_client
->rpc_ops
->getattr(server
, &o_res
->fh
, o_res
->f_attr
);
762 static int _nfs4_do_access(struct inode
*inode
, struct rpc_cred
*cred
, int openflags
)
764 struct nfs_access_entry cache
;
768 if (openflags
& FMODE_READ
)
770 if (openflags
& FMODE_WRITE
)
772 status
= nfs_access_get_cached(inode
, cred
, &cache
);
776 /* Be clever: ask server to check for all possible rights */
777 cache
.mask
= MAY_EXEC
| MAY_WRITE
| MAY_READ
;
779 cache
.jiffies
= jiffies
;
780 status
= _nfs4_proc_access(inode
, &cache
);
783 nfs_access_add_cache(inode
, &cache
);
785 if ((cache
.mask
& mask
) == mask
)
790 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
792 struct nfs_client
*clp
= server
->nfs_client
;
796 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
799 if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
))
801 nfs4_schedule_state_recovery(clp
);
808 * reclaim state on the server after a network partition.
809 * Assumes caller holds the appropriate lock
811 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
813 struct inode
*inode
= state
->inode
;
814 struct nfs_delegation
*delegation
= NFS_I(inode
)->delegation
;
815 struct nfs4_opendata
*opendata
;
816 int openflags
= state
->state
& (FMODE_READ
|FMODE_WRITE
);
819 if (delegation
!= NULL
&& !(delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)) {
820 ret
= _nfs4_do_access(inode
, ctx
->cred
, openflags
);
823 memcpy(&state
->stateid
, &delegation
->stateid
, sizeof(state
->stateid
));
824 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
827 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, openflags
, NULL
);
828 if (opendata
== NULL
)
830 ret
= nfs4_open_recover(opendata
, state
);
831 if (ret
== -ESTALE
) {
832 /* Invalidate the state owner so we don't ever use it again */
833 nfs4_drop_state_owner(state
->owner
);
834 d_drop(ctx
->path
.dentry
);
836 nfs4_opendata_put(opendata
);
840 static inline int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
842 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
843 struct nfs4_exception exception
= { };
847 err
= _nfs4_open_expired(ctx
, state
);
848 if (err
== -NFS4ERR_DELAY
)
849 nfs4_handle_exception(server
, err
, &exception
);
850 } while (exception
.retry
);
854 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
856 struct nfs_open_context
*ctx
;
859 ctx
= nfs4_state_find_open_context(state
);
862 ret
= nfs4_do_open_expired(ctx
, state
);
863 put_nfs_open_context(ctx
);
868 * Returns a referenced nfs4_state if there is an open delegation on the file
870 static int _nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
872 struct nfs_delegation
*delegation
;
873 struct nfs_server
*server
= NFS_SERVER(inode
);
874 struct nfs_client
*clp
= server
->nfs_client
;
875 struct nfs_inode
*nfsi
= NFS_I(inode
);
876 struct nfs4_state_owner
*sp
= NULL
;
877 struct nfs4_state
*state
= NULL
;
878 int open_flags
= flags
& (FMODE_READ
|FMODE_WRITE
);
882 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
883 dprintk("%s: nfs4_get_state_owner failed!\n", __FUNCTION__
);
886 err
= nfs4_recover_expired_lease(server
);
888 goto out_put_state_owner
;
889 /* Protect against reboot recovery - NOTE ORDER! */
890 down_read(&clp
->cl_sem
);
891 /* Protect against delegation recall */
892 down_read(&nfsi
->rwsem
);
893 delegation
= NFS_I(inode
)->delegation
;
895 if (delegation
== NULL
|| (delegation
->type
& open_flags
) != open_flags
)
898 state
= nfs4_get_open_state(inode
, sp
);
903 if ((state
->state
& open_flags
) == open_flags
) {
904 spin_lock(&inode
->i_lock
);
905 update_open_stateflags(state
, open_flags
);
906 spin_unlock(&inode
->i_lock
);
908 } else if (state
->state
!= 0)
909 goto out_put_open_state
;
912 err
= _nfs4_do_access(inode
, cred
, open_flags
);
915 goto out_put_open_state
;
916 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
917 update_open_stateid(state
, &delegation
->stateid
, open_flags
);
919 nfs4_put_state_owner(sp
);
920 up_read(&nfsi
->rwsem
);
921 up_read(&clp
->cl_sem
);
925 nfs4_put_open_state(state
);
927 up_read(&nfsi
->rwsem
);
928 up_read(&clp
->cl_sem
);
930 nfs_inode_return_delegation(inode
);
932 nfs4_put_state_owner(sp
);
936 static struct nfs4_state
*nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
)
938 struct nfs4_exception exception
= { };
939 struct nfs4_state
*res
= ERR_PTR(-EIO
);
943 err
= _nfs4_open_delegated(inode
, flags
, cred
, &res
);
946 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(inode
),
948 } while (exception
.retry
);
953 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
954 * fields corresponding to attributes that were used to store the verifier.
955 * Make sure we clobber those fields in the later setattr call
957 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
959 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
960 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
961 sattr
->ia_valid
|= ATTR_ATIME
;
963 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
964 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
965 sattr
->ia_valid
|= ATTR_MTIME
;
969 * Returns a referenced nfs4_state
971 static int _nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
973 struct nfs4_state_owner
*sp
;
974 struct nfs4_state
*state
= NULL
;
975 struct nfs_server
*server
= NFS_SERVER(dir
);
976 struct nfs_client
*clp
= server
->nfs_client
;
977 struct nfs4_opendata
*opendata
;
980 /* Protect against reboot recovery conflicts */
982 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
983 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
986 status
= nfs4_recover_expired_lease(server
);
988 goto err_put_state_owner
;
989 down_read(&clp
->cl_sem
);
991 opendata
= nfs4_opendata_alloc(path
, sp
, flags
, sattr
);
992 if (opendata
== NULL
)
993 goto err_release_rwsem
;
995 status
= _nfs4_proc_open(opendata
);
997 goto err_opendata_put
;
999 if (opendata
->o_arg
.open_flags
& O_EXCL
)
1000 nfs4_exclusive_attrset(opendata
, sattr
);
1003 state
= nfs4_opendata_to_nfs4_state(opendata
);
1005 goto err_opendata_put
;
1006 if (opendata
->o_res
.delegation_type
!= 0)
1007 nfs_inode_set_delegation(state
->inode
, cred
, &opendata
->o_res
);
1008 nfs4_opendata_put(opendata
);
1009 nfs4_put_state_owner(sp
);
1010 up_read(&clp
->cl_sem
);
1014 nfs4_opendata_put(opendata
);
1016 up_read(&clp
->cl_sem
);
1017 err_put_state_owner
:
1018 nfs4_put_state_owner(sp
);
1025 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1027 struct nfs4_exception exception
= { };
1028 struct nfs4_state
*res
;
1032 status
= _nfs4_do_open(dir
, path
, flags
, sattr
, cred
, &res
);
1035 /* NOTE: BAD_SEQID means the server and client disagree about the
1036 * book-keeping w.r.t. state-changing operations
1037 * (OPEN/CLOSE/LOCK/LOCKU...)
1038 * It is actually a sign of a bug on the client or on the server.
1040 * If we receive a BAD_SEQID error in the particular case of
1041 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1042 * have unhashed the old state_owner for us, and that we can
1043 * therefore safely retry using a new one. We should still warn
1044 * the user though...
1046 if (status
== -NFS4ERR_BAD_SEQID
) {
1047 printk(KERN_WARNING
"NFS: v4 server returned a bad sequence-id error!\n");
1048 exception
.retry
= 1;
1052 * BAD_STATEID on OPEN means that the server cancelled our
1053 * state before it received the OPEN_CONFIRM.
1054 * Recover by retrying the request as per the discussion
1055 * on Page 181 of RFC3530.
1057 if (status
== -NFS4ERR_BAD_STATEID
) {
1058 exception
.retry
= 1;
1061 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1062 status
, &exception
));
1063 } while (exception
.retry
);
1067 static int _nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1068 struct iattr
*sattr
, struct nfs4_state
*state
)
1070 struct nfs_server
*server
= NFS_SERVER(inode
);
1071 struct nfs_setattrargs arg
= {
1072 .fh
= NFS_FH(inode
),
1075 .bitmask
= server
->attr_bitmask
,
1077 struct nfs_setattrres res
= {
1081 struct rpc_message msg
= {
1082 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1086 unsigned long timestamp
= jiffies
;
1089 nfs_fattr_init(fattr
);
1091 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1092 /* Use that stateid */
1093 } else if (state
!= NULL
) {
1094 msg
.rpc_cred
= state
->owner
->so_cred
;
1095 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1097 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1099 status
= rpc_call_sync(server
->client
, &msg
, 0);
1100 if (status
== 0 && state
!= NULL
)
1101 renew_lease(server
, timestamp
);
1105 static int nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1106 struct iattr
*sattr
, struct nfs4_state
*state
)
1108 struct nfs_server
*server
= NFS_SERVER(inode
);
1109 struct nfs4_exception exception
= { };
1112 err
= nfs4_handle_exception(server
,
1113 _nfs4_do_setattr(inode
, fattr
, sattr
, state
),
1115 } while (exception
.retry
);
1119 struct nfs4_closedata
{
1121 struct inode
*inode
;
1122 struct nfs4_state
*state
;
1123 struct nfs_closeargs arg
;
1124 struct nfs_closeres res
;
1125 struct nfs_fattr fattr
;
1126 unsigned long timestamp
;
1129 static void nfs4_free_closedata(void *data
)
1131 struct nfs4_closedata
*calldata
= data
;
1132 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1134 nfs4_put_open_state(calldata
->state
);
1135 nfs_free_seqid(calldata
->arg
.seqid
);
1136 nfs4_put_state_owner(sp
);
1137 dput(calldata
->path
.dentry
);
1138 mntput(calldata
->path
.mnt
);
1142 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1144 struct nfs4_closedata
*calldata
= data
;
1145 struct nfs4_state
*state
= calldata
->state
;
1146 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1148 if (RPC_ASSASSINATED(task
))
1150 /* hmm. we are done with the inode, and in the process of freeing
1151 * the state_owner. we keep this around to process errors
1153 nfs_increment_open_seqid(task
->tk_status
, calldata
->arg
.seqid
);
1154 switch (task
->tk_status
) {
1156 memcpy(&state
->stateid
, &calldata
->res
.stateid
,
1157 sizeof(state
->stateid
));
1158 renew_lease(server
, calldata
->timestamp
);
1160 case -NFS4ERR_STALE_STATEID
:
1161 case -NFS4ERR_EXPIRED
:
1164 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
1165 rpc_restart_call(task
);
1169 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1172 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1174 struct nfs4_closedata
*calldata
= data
;
1175 struct nfs4_state
*state
= calldata
->state
;
1176 struct rpc_message msg
= {
1177 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1178 .rpc_argp
= &calldata
->arg
,
1179 .rpc_resp
= &calldata
->res
,
1180 .rpc_cred
= state
->owner
->so_cred
,
1182 int mode
= 0, old_mode
;
1184 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1186 /* Recalculate the new open mode in case someone reopened the file
1187 * while we were waiting in line to be scheduled.
1189 spin_lock(&state
->owner
->so_lock
);
1190 spin_lock(&calldata
->inode
->i_lock
);
1191 mode
= old_mode
= state
->state
;
1192 if (state
->n_rdwr
== 0) {
1193 if (state
->n_rdonly
== 0)
1194 mode
&= ~FMODE_READ
;
1195 if (state
->n_wronly
== 0)
1196 mode
&= ~FMODE_WRITE
;
1198 nfs4_state_set_mode_locked(state
, mode
);
1199 spin_unlock(&calldata
->inode
->i_lock
);
1200 spin_unlock(&state
->owner
->so_lock
);
1201 if (mode
== old_mode
|| test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
1202 /* Note: exit _without_ calling nfs4_close_done */
1203 task
->tk_action
= NULL
;
1206 nfs_fattr_init(calldata
->res
.fattr
);
1208 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1209 calldata
->arg
.open_flags
= mode
;
1210 calldata
->timestamp
= jiffies
;
1211 rpc_call_setup(task
, &msg
, 0);
1214 static const struct rpc_call_ops nfs4_close_ops
= {
1215 .rpc_call_prepare
= nfs4_close_prepare
,
1216 .rpc_call_done
= nfs4_close_done
,
1217 .rpc_release
= nfs4_free_closedata
,
1221 * It is possible for data to be read/written from a mem-mapped file
1222 * after the sys_close call (which hits the vfs layer as a flush).
1223 * This means that we can't safely call nfsv4 close on a file until
1224 * the inode is cleared. This in turn means that we are not good
1225 * NFSv4 citizens - we do not indicate to the server to update the file's
1226 * share state even when we are done with one of the three share
1227 * stateid's in the inode.
1229 * NOTE: Caller must be holding the sp->so_owner semaphore!
1231 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
)
1233 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1234 struct nfs4_closedata
*calldata
;
1235 struct nfs4_state_owner
*sp
= state
->owner
;
1236 struct rpc_task
*task
;
1237 int status
= -ENOMEM
;
1239 calldata
= kmalloc(sizeof(*calldata
), GFP_KERNEL
);
1240 if (calldata
== NULL
)
1242 calldata
->inode
= state
->inode
;
1243 calldata
->state
= state
;
1244 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1245 calldata
->arg
.stateid
= &state
->stateid
;
1246 /* Serialization for the sequence id */
1247 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1248 if (calldata
->arg
.seqid
== NULL
)
1249 goto out_free_calldata
;
1250 calldata
->arg
.bitmask
= server
->attr_bitmask
;
1251 calldata
->res
.fattr
= &calldata
->fattr
;
1252 calldata
->res
.server
= server
;
1253 calldata
->path
.mnt
= mntget(path
->mnt
);
1254 calldata
->path
.dentry
= dget(path
->dentry
);
1256 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_close_ops
, calldata
);
1258 return PTR_ERR(task
);
1264 nfs4_put_open_state(state
);
1265 nfs4_put_state_owner(sp
);
1269 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
)
1273 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1274 if (!IS_ERR(filp
)) {
1275 struct nfs_open_context
*ctx
;
1276 ctx
= (struct nfs_open_context
*)filp
->private_data
;
1280 nfs4_close_state(path
, state
, nd
->intent
.open
.flags
);
1281 return PTR_ERR(filp
);
1285 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1287 struct path path
= {
1292 struct rpc_cred
*cred
;
1293 struct nfs4_state
*state
;
1296 if (nd
->flags
& LOOKUP_CREATE
) {
1297 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1298 attr
.ia_valid
= ATTR_MODE
;
1299 if (!IS_POSIXACL(dir
))
1300 attr
.ia_mode
&= ~current
->fs
->umask
;
1303 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1306 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1308 return (struct dentry
*)cred
;
1309 state
= nfs4_do_open(dir
, &path
, nd
->intent
.open
.flags
, &attr
, cred
);
1311 if (IS_ERR(state
)) {
1312 if (PTR_ERR(state
) == -ENOENT
)
1313 d_add(dentry
, NULL
);
1314 return (struct dentry
*)state
;
1316 res
= d_add_unique(dentry
, igrab(state
->inode
));
1319 nfs4_intent_set_file(nd
, &path
, state
);
1324 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1326 struct path path
= {
1330 struct rpc_cred
*cred
;
1331 struct nfs4_state
*state
;
1333 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1335 return PTR_ERR(cred
);
1336 state
= nfs4_open_delegated(dentry
->d_inode
, openflags
, cred
);
1338 state
= nfs4_do_open(dir
, &path
, openflags
, NULL
, cred
);
1340 if (IS_ERR(state
)) {
1341 switch (PTR_ERR(state
)) {
1347 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1353 if (state
->inode
== dentry
->d_inode
) {
1354 nfs4_intent_set_file(nd
, &path
, state
);
1357 nfs4_close_state(&path
, state
, openflags
);
1364 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1366 struct nfs4_server_caps_res res
= {};
1367 struct rpc_message msg
= {
1368 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1369 .rpc_argp
= fhandle
,
1374 status
= rpc_call_sync(server
->client
, &msg
, 0);
1376 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
1377 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
1378 server
->caps
|= NFS_CAP_ACLS
;
1379 if (res
.has_links
!= 0)
1380 server
->caps
|= NFS_CAP_HARDLINKS
;
1381 if (res
.has_symlinks
!= 0)
1382 server
->caps
|= NFS_CAP_SYMLINKS
;
1383 server
->acl_bitmask
= res
.acl_bitmask
;
1388 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1390 struct nfs4_exception exception
= { };
1393 err
= nfs4_handle_exception(server
,
1394 _nfs4_server_capabilities(server
, fhandle
),
1396 } while (exception
.retry
);
1400 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1401 struct nfs_fsinfo
*info
)
1403 struct nfs4_lookup_root_arg args
= {
1404 .bitmask
= nfs4_fattr_bitmap
,
1406 struct nfs4_lookup_res res
= {
1408 .fattr
= info
->fattr
,
1411 struct rpc_message msg
= {
1412 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
1416 nfs_fattr_init(info
->fattr
);
1417 return rpc_call_sync(server
->client
, &msg
, 0);
1420 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1421 struct nfs_fsinfo
*info
)
1423 struct nfs4_exception exception
= { };
1426 err
= nfs4_handle_exception(server
,
1427 _nfs4_lookup_root(server
, fhandle
, info
),
1429 } while (exception
.retry
);
1434 * get the file handle for the "/" directory on the server
1436 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1437 struct nfs_fsinfo
*info
)
1441 status
= nfs4_lookup_root(server
, fhandle
, info
);
1443 status
= nfs4_server_capabilities(server
, fhandle
);
1445 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
1446 return nfs4_map_errors(status
);
1450 * Get locations and (maybe) other attributes of a referral.
1451 * Note that we'll actually follow the referral later when
1452 * we detect fsid mismatch in inode revalidation
1454 static int nfs4_get_referral(struct inode
*dir
, struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
1456 int status
= -ENOMEM
;
1457 struct page
*page
= NULL
;
1458 struct nfs4_fs_locations
*locations
= NULL
;
1460 page
= alloc_page(GFP_KERNEL
);
1463 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
1464 if (locations
== NULL
)
1467 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
1470 /* Make sure server returned a different fsid for the referral */
1471 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
1472 dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__
, name
->name
);
1477 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
1478 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
1480 fattr
->mode
= S_IFDIR
;
1481 memset(fhandle
, 0, sizeof(struct nfs_fh
));
1490 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1492 struct nfs4_getattr_arg args
= {
1494 .bitmask
= server
->attr_bitmask
,
1496 struct nfs4_getattr_res res
= {
1500 struct rpc_message msg
= {
1501 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
1506 nfs_fattr_init(fattr
);
1507 return rpc_call_sync(server
->client
, &msg
, 0);
1510 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1512 struct nfs4_exception exception
= { };
1515 err
= nfs4_handle_exception(server
,
1516 _nfs4_proc_getattr(server
, fhandle
, fattr
),
1518 } while (exception
.retry
);
1523 * The file is not closed if it is opened due to the a request to change
1524 * the size of the file. The open call will not be needed once the
1525 * VFS layer lookup-intents are implemented.
1527 * Close is called when the inode is destroyed.
1528 * If we haven't opened the file for O_WRONLY, we
1529 * need to in the size_change case to obtain a stateid.
1532 * Because OPEN is always done by name in nfsv4, it is
1533 * possible that we opened a different file by the same
1534 * name. We can recognize this race condition, but we
1535 * can't do anything about it besides returning an error.
1537 * This will be fixed with VFS changes (lookup-intent).
1540 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
1541 struct iattr
*sattr
)
1543 struct rpc_cred
*cred
;
1544 struct inode
*inode
= dentry
->d_inode
;
1545 struct nfs_open_context
*ctx
;
1546 struct nfs4_state
*state
= NULL
;
1549 nfs_fattr_init(fattr
);
1551 cred
= rpcauth_lookupcred(NFS_CLIENT(inode
)->cl_auth
, 0);
1553 return PTR_ERR(cred
);
1555 /* Search for an existing open(O_WRITE) file */
1556 ctx
= nfs_find_open_context(inode
, cred
, FMODE_WRITE
);
1560 status
= nfs4_do_setattr(inode
, fattr
, sattr
, state
);
1562 nfs_setattr_update_inode(inode
, sattr
);
1564 put_nfs_open_context(ctx
);
1569 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1570 struct qstr
*name
, struct nfs_fh
*fhandle
,
1571 struct nfs_fattr
*fattr
)
1574 struct nfs4_lookup_arg args
= {
1575 .bitmask
= server
->attr_bitmask
,
1579 struct nfs4_lookup_res res
= {
1584 struct rpc_message msg
= {
1585 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1590 nfs_fattr_init(fattr
);
1592 dprintk("NFS call lookupfh %s\n", name
->name
);
1593 status
= rpc_call_sync(server
->client
, &msg
, 0);
1594 dprintk("NFS reply lookupfh: %d\n", status
);
1598 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1599 struct qstr
*name
, struct nfs_fh
*fhandle
,
1600 struct nfs_fattr
*fattr
)
1602 struct nfs4_exception exception
= { };
1605 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
1607 if (err
== -NFS4ERR_MOVED
) {
1611 err
= nfs4_handle_exception(server
, err
, &exception
);
1612 } while (exception
.retry
);
1616 static int _nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
1617 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1621 dprintk("NFS call lookup %s\n", name
->name
);
1622 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
1623 if (status
== -NFS4ERR_MOVED
)
1624 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
1625 dprintk("NFS reply lookup: %d\n", status
);
1629 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1631 struct nfs4_exception exception
= { };
1634 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1635 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
1637 } while (exception
.retry
);
1641 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1643 struct nfs4_accessargs args
= {
1644 .fh
= NFS_FH(inode
),
1646 struct nfs4_accessres res
= { 0 };
1647 struct rpc_message msg
= {
1648 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
1651 .rpc_cred
= entry
->cred
,
1653 int mode
= entry
->mask
;
1657 * Determine which access bits we want to ask for...
1659 if (mode
& MAY_READ
)
1660 args
.access
|= NFS4_ACCESS_READ
;
1661 if (S_ISDIR(inode
->i_mode
)) {
1662 if (mode
& MAY_WRITE
)
1663 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
1664 if (mode
& MAY_EXEC
)
1665 args
.access
|= NFS4_ACCESS_LOOKUP
;
1667 if (mode
& MAY_WRITE
)
1668 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
1669 if (mode
& MAY_EXEC
)
1670 args
.access
|= NFS4_ACCESS_EXECUTE
;
1672 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1675 if (res
.access
& NFS4_ACCESS_READ
)
1676 entry
->mask
|= MAY_READ
;
1677 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
1678 entry
->mask
|= MAY_WRITE
;
1679 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
1680 entry
->mask
|= MAY_EXEC
;
1685 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1687 struct nfs4_exception exception
= { };
1690 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1691 _nfs4_proc_access(inode
, entry
),
1693 } while (exception
.retry
);
1698 * TODO: For the time being, we don't try to get any attributes
1699 * along with any of the zero-copy operations READ, READDIR,
1702 * In the case of the first three, we want to put the GETATTR
1703 * after the read-type operation -- this is because it is hard
1704 * to predict the length of a GETATTR response in v4, and thus
1705 * align the READ data correctly. This means that the GETATTR
1706 * may end up partially falling into the page cache, and we should
1707 * shift it into the 'tail' of the xdr_buf before processing.
1708 * To do this efficiently, we need to know the total length
1709 * of data received, which doesn't seem to be available outside
1712 * In the case of WRITE, we also want to put the GETATTR after
1713 * the operation -- in this case because we want to make sure
1714 * we get the post-operation mtime and size. This means that
1715 * we can't use xdr_encode_pages() as written: we need a variant
1716 * of it which would leave room in the 'tail' iovec.
1718 * Both of these changes to the XDR layer would in fact be quite
1719 * minor, but I decided to leave them for a subsequent patch.
1721 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1722 unsigned int pgbase
, unsigned int pglen
)
1724 struct nfs4_readlink args
= {
1725 .fh
= NFS_FH(inode
),
1730 struct rpc_message msg
= {
1731 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
1736 return rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1739 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1740 unsigned int pgbase
, unsigned int pglen
)
1742 struct nfs4_exception exception
= { };
1745 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1746 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
1748 } while (exception
.retry
);
1754 * We will need to arrange for the VFS layer to provide an atomic open.
1755 * Until then, this create/open method is prone to inefficiency and race
1756 * conditions due to the lookup, create, and open VFS calls from sys_open()
1757 * placed on the wire.
1759 * Given the above sorry state of affairs, I'm simply sending an OPEN.
1760 * The file will be opened again in the subsequent VFS open call
1761 * (nfs4_proc_file_open).
1763 * The open for read will just hang around to be used by any process that
1764 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
1768 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
1769 int flags
, struct nameidata
*nd
)
1771 struct path path
= {
1775 struct nfs4_state
*state
;
1776 struct rpc_cred
*cred
;
1779 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1781 status
= PTR_ERR(cred
);
1784 state
= nfs4_do_open(dir
, &path
, flags
, sattr
, cred
);
1786 if (IS_ERR(state
)) {
1787 status
= PTR_ERR(state
);
1790 d_instantiate(dentry
, igrab(state
->inode
));
1791 if (flags
& O_EXCL
) {
1792 struct nfs_fattr fattr
;
1793 status
= nfs4_do_setattr(state
->inode
, &fattr
, sattr
, state
);
1795 nfs_setattr_update_inode(state
->inode
, sattr
);
1796 nfs_post_op_update_inode(state
->inode
, &fattr
);
1798 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
1799 status
= nfs4_intent_set_file(nd
, &path
, state
);
1801 nfs4_close_state(&path
, state
, flags
);
1806 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1808 struct nfs_server
*server
= NFS_SERVER(dir
);
1809 struct nfs4_remove_arg args
= {
1812 .bitmask
= server
->attr_bitmask
,
1814 struct nfs_fattr dir_attr
;
1815 struct nfs4_remove_res res
= {
1817 .dir_attr
= &dir_attr
,
1819 struct rpc_message msg
= {
1820 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
1826 nfs_fattr_init(res
.dir_attr
);
1827 status
= rpc_call_sync(server
->client
, &msg
, 0);
1829 update_changeattr(dir
, &res
.cinfo
);
1830 nfs_post_op_update_inode(dir
, res
.dir_attr
);
1835 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1837 struct nfs4_exception exception
= { };
1840 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1841 _nfs4_proc_remove(dir
, name
),
1843 } while (exception
.retry
);
1847 struct unlink_desc
{
1848 struct nfs4_remove_arg args
;
1849 struct nfs4_remove_res res
;
1850 struct nfs_fattr dir_attr
;
1853 static int nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct dentry
*dir
,
1856 struct nfs_server
*server
= NFS_SERVER(dir
->d_inode
);
1857 struct unlink_desc
*up
;
1859 up
= kmalloc(sizeof(*up
), GFP_KERNEL
);
1863 up
->args
.fh
= NFS_FH(dir
->d_inode
);
1864 up
->args
.name
= name
;
1865 up
->args
.bitmask
= server
->attr_bitmask
;
1866 up
->res
.server
= server
;
1867 up
->res
.dir_attr
= &up
->dir_attr
;
1869 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
1870 msg
->rpc_argp
= &up
->args
;
1871 msg
->rpc_resp
= &up
->res
;
1875 static int nfs4_proc_unlink_done(struct dentry
*dir
, struct rpc_task
*task
)
1877 struct rpc_message
*msg
= &task
->tk_msg
;
1878 struct unlink_desc
*up
;
1880 if (msg
->rpc_resp
!= NULL
) {
1881 up
= container_of(msg
->rpc_resp
, struct unlink_desc
, res
);
1882 update_changeattr(dir
->d_inode
, &up
->res
.cinfo
);
1883 nfs_post_op_update_inode(dir
->d_inode
, up
->res
.dir_attr
);
1885 msg
->rpc_resp
= NULL
;
1886 msg
->rpc_argp
= NULL
;
1891 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1892 struct inode
*new_dir
, struct qstr
*new_name
)
1894 struct nfs_server
*server
= NFS_SERVER(old_dir
);
1895 struct nfs4_rename_arg arg
= {
1896 .old_dir
= NFS_FH(old_dir
),
1897 .new_dir
= NFS_FH(new_dir
),
1898 .old_name
= old_name
,
1899 .new_name
= new_name
,
1900 .bitmask
= server
->attr_bitmask
,
1902 struct nfs_fattr old_fattr
, new_fattr
;
1903 struct nfs4_rename_res res
= {
1905 .old_fattr
= &old_fattr
,
1906 .new_fattr
= &new_fattr
,
1908 struct rpc_message msg
= {
1909 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
1915 nfs_fattr_init(res
.old_fattr
);
1916 nfs_fattr_init(res
.new_fattr
);
1917 status
= rpc_call_sync(server
->client
, &msg
, 0);
1920 update_changeattr(old_dir
, &res
.old_cinfo
);
1921 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
1922 update_changeattr(new_dir
, &res
.new_cinfo
);
1923 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
1928 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1929 struct inode
*new_dir
, struct qstr
*new_name
)
1931 struct nfs4_exception exception
= { };
1934 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
1935 _nfs4_proc_rename(old_dir
, old_name
,
1938 } while (exception
.retry
);
1942 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
1944 struct nfs_server
*server
= NFS_SERVER(inode
);
1945 struct nfs4_link_arg arg
= {
1946 .fh
= NFS_FH(inode
),
1947 .dir_fh
= NFS_FH(dir
),
1949 .bitmask
= server
->attr_bitmask
,
1951 struct nfs_fattr fattr
, dir_attr
;
1952 struct nfs4_link_res res
= {
1955 .dir_attr
= &dir_attr
,
1957 struct rpc_message msg
= {
1958 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
1964 nfs_fattr_init(res
.fattr
);
1965 nfs_fattr_init(res
.dir_attr
);
1966 status
= rpc_call_sync(server
->client
, &msg
, 0);
1968 update_changeattr(dir
, &res
.cinfo
);
1969 nfs_post_op_update_inode(dir
, res
.dir_attr
);
1970 nfs_post_op_update_inode(inode
, res
.fattr
);
1976 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
1978 struct nfs4_exception exception
= { };
1981 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1982 _nfs4_proc_link(inode
, dir
, name
),
1984 } while (exception
.retry
);
1988 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
1989 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
1991 struct nfs_server
*server
= NFS_SERVER(dir
);
1992 struct nfs_fh fhandle
;
1993 struct nfs_fattr fattr
, dir_fattr
;
1994 struct nfs4_create_arg arg
= {
1995 .dir_fh
= NFS_FH(dir
),
1997 .name
= &dentry
->d_name
,
2000 .bitmask
= server
->attr_bitmask
,
2002 struct nfs4_create_res res
= {
2006 .dir_fattr
= &dir_fattr
,
2008 struct rpc_message msg
= {
2009 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
],
2015 if (len
> NFS4_MAXPATHLEN
)
2016 return -ENAMETOOLONG
;
2018 arg
.u
.symlink
.pages
= &page
;
2019 arg
.u
.symlink
.len
= len
;
2020 nfs_fattr_init(&fattr
);
2021 nfs_fattr_init(&dir_fattr
);
2023 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2025 update_changeattr(dir
, &res
.dir_cinfo
);
2026 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2027 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2032 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2033 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2035 struct nfs4_exception exception
= { };
2038 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2039 _nfs4_proc_symlink(dir
, dentry
, page
,
2042 } while (exception
.retry
);
2046 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2047 struct iattr
*sattr
)
2049 struct nfs_server
*server
= NFS_SERVER(dir
);
2050 struct nfs_fh fhandle
;
2051 struct nfs_fattr fattr
, dir_fattr
;
2052 struct nfs4_create_arg arg
= {
2053 .dir_fh
= NFS_FH(dir
),
2055 .name
= &dentry
->d_name
,
2058 .bitmask
= server
->attr_bitmask
,
2060 struct nfs4_create_res res
= {
2064 .dir_fattr
= &dir_fattr
,
2066 struct rpc_message msg
= {
2067 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2073 nfs_fattr_init(&fattr
);
2074 nfs_fattr_init(&dir_fattr
);
2076 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2078 update_changeattr(dir
, &res
.dir_cinfo
);
2079 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2080 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2085 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2086 struct iattr
*sattr
)
2088 struct nfs4_exception exception
= { };
2091 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2092 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2094 } while (exception
.retry
);
2098 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2099 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2101 struct inode
*dir
= dentry
->d_inode
;
2102 struct nfs4_readdir_arg args
= {
2107 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2109 struct nfs4_readdir_res res
;
2110 struct rpc_message msg
= {
2111 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2118 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__
,
2119 dentry
->d_parent
->d_name
.name
,
2120 dentry
->d_name
.name
,
2121 (unsigned long long)cookie
);
2122 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2123 res
.pgbase
= args
.pgbase
;
2124 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2126 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2127 dprintk("%s: returns %d\n", __FUNCTION__
, status
);
2131 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2132 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2134 struct nfs4_exception exception
= { };
2137 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2138 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2141 } while (exception
.retry
);
2145 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2146 struct iattr
*sattr
, dev_t rdev
)
2148 struct nfs_server
*server
= NFS_SERVER(dir
);
2150 struct nfs_fattr fattr
, dir_fattr
;
2151 struct nfs4_create_arg arg
= {
2152 .dir_fh
= NFS_FH(dir
),
2154 .name
= &dentry
->d_name
,
2156 .bitmask
= server
->attr_bitmask
,
2158 struct nfs4_create_res res
= {
2162 .dir_fattr
= &dir_fattr
,
2164 struct rpc_message msg
= {
2165 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2170 int mode
= sattr
->ia_mode
;
2172 nfs_fattr_init(&fattr
);
2173 nfs_fattr_init(&dir_fattr
);
2175 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2176 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2178 arg
.ftype
= NF4FIFO
;
2179 else if (S_ISBLK(mode
)) {
2181 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2182 arg
.u
.device
.specdata2
= MINOR(rdev
);
2184 else if (S_ISCHR(mode
)) {
2186 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2187 arg
.u
.device
.specdata2
= MINOR(rdev
);
2190 arg
.ftype
= NF4SOCK
;
2192 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2194 update_changeattr(dir
, &res
.dir_cinfo
);
2195 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2196 status
= nfs_instantiate(dentry
, &fh
, &fattr
);
2201 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2202 struct iattr
*sattr
, dev_t rdev
)
2204 struct nfs4_exception exception
= { };
2207 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2208 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2210 } while (exception
.retry
);
2214 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2215 struct nfs_fsstat
*fsstat
)
2217 struct nfs4_statfs_arg args
= {
2219 .bitmask
= server
->attr_bitmask
,
2221 struct rpc_message msg
= {
2222 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2227 nfs_fattr_init(fsstat
->fattr
);
2228 return rpc_call_sync(server
->client
, &msg
, 0);
2231 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2233 struct nfs4_exception exception
= { };
2236 err
= nfs4_handle_exception(server
,
2237 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2239 } while (exception
.retry
);
2243 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2244 struct nfs_fsinfo
*fsinfo
)
2246 struct nfs4_fsinfo_arg args
= {
2248 .bitmask
= server
->attr_bitmask
,
2250 struct rpc_message msg
= {
2251 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2256 return rpc_call_sync(server
->client
, &msg
, 0);
2259 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2261 struct nfs4_exception exception
= { };
2265 err
= nfs4_handle_exception(server
,
2266 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2268 } while (exception
.retry
);
2272 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2274 nfs_fattr_init(fsinfo
->fattr
);
2275 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2278 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2279 struct nfs_pathconf
*pathconf
)
2281 struct nfs4_pathconf_arg args
= {
2283 .bitmask
= server
->attr_bitmask
,
2285 struct rpc_message msg
= {
2286 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2288 .rpc_resp
= pathconf
,
2291 /* None of the pathconf attributes are mandatory to implement */
2292 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2293 memset(pathconf
, 0, sizeof(*pathconf
));
2297 nfs_fattr_init(pathconf
->fattr
);
2298 return rpc_call_sync(server
->client
, &msg
, 0);
2301 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2302 struct nfs_pathconf
*pathconf
)
2304 struct nfs4_exception exception
= { };
2308 err
= nfs4_handle_exception(server
,
2309 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2311 } while (exception
.retry
);
2315 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2317 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2319 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
2320 rpc_restart_call(task
);
2323 if (task
->tk_status
> 0)
2324 renew_lease(server
, data
->timestamp
);
2328 static void nfs4_proc_read_setup(struct nfs_read_data
*data
)
2330 struct rpc_message msg
= {
2331 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
],
2332 .rpc_argp
= &data
->args
,
2333 .rpc_resp
= &data
->res
,
2334 .rpc_cred
= data
->cred
,
2337 data
->timestamp
= jiffies
;
2339 rpc_call_setup(&data
->task
, &msg
, 0);
2342 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2344 struct inode
*inode
= data
->inode
;
2346 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2347 rpc_restart_call(task
);
2350 if (task
->tk_status
>= 0) {
2351 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2352 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2357 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, int how
)
2359 struct rpc_message msg
= {
2360 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
],
2361 .rpc_argp
= &data
->args
,
2362 .rpc_resp
= &data
->res
,
2363 .rpc_cred
= data
->cred
,
2365 struct inode
*inode
= data
->inode
;
2366 struct nfs_server
*server
= NFS_SERVER(inode
);
2369 if (how
& FLUSH_STABLE
) {
2370 if (!NFS_I(inode
)->ncommit
)
2371 stable
= NFS_FILE_SYNC
;
2373 stable
= NFS_DATA_SYNC
;
2375 stable
= NFS_UNSTABLE
;
2376 data
->args
.stable
= stable
;
2377 data
->args
.bitmask
= server
->attr_bitmask
;
2378 data
->res
.server
= server
;
2380 data
->timestamp
= jiffies
;
2382 /* Finalize the task. */
2383 rpc_call_setup(&data
->task
, &msg
, 0);
2386 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2388 struct inode
*inode
= data
->inode
;
2390 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2391 rpc_restart_call(task
);
2394 if (task
->tk_status
>= 0)
2395 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2399 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, int how
)
2401 struct rpc_message msg
= {
2402 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
],
2403 .rpc_argp
= &data
->args
,
2404 .rpc_resp
= &data
->res
,
2405 .rpc_cred
= data
->cred
,
2407 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2409 data
->args
.bitmask
= server
->attr_bitmask
;
2410 data
->res
.server
= server
;
2412 rpc_call_setup(&data
->task
, &msg
, 0);
2416 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
2417 * standalone procedure for queueing an asynchronous RENEW.
2419 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
2421 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
2422 unsigned long timestamp
= (unsigned long)data
;
2424 if (task
->tk_status
< 0) {
2425 switch (task
->tk_status
) {
2426 case -NFS4ERR_STALE_CLIENTID
:
2427 case -NFS4ERR_EXPIRED
:
2428 case -NFS4ERR_CB_PATH_DOWN
:
2429 nfs4_schedule_state_recovery(clp
);
2433 spin_lock(&clp
->cl_lock
);
2434 if (time_before(clp
->cl_last_renewal
,timestamp
))
2435 clp
->cl_last_renewal
= timestamp
;
2436 spin_unlock(&clp
->cl_lock
);
2439 static const struct rpc_call_ops nfs4_renew_ops
= {
2440 .rpc_call_done
= nfs4_renew_done
,
2443 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2445 struct rpc_message msg
= {
2446 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2451 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
2452 &nfs4_renew_ops
, (void *)jiffies
);
2455 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2457 struct rpc_message msg
= {
2458 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2462 unsigned long now
= jiffies
;
2465 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2468 spin_lock(&clp
->cl_lock
);
2469 if (time_before(clp
->cl_last_renewal
,now
))
2470 clp
->cl_last_renewal
= now
;
2471 spin_unlock(&clp
->cl_lock
);
2475 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
2477 return (server
->caps
& NFS_CAP_ACLS
)
2478 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2479 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
2482 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
2483 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
2486 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
2488 static void buf_to_pages(const void *buf
, size_t buflen
,
2489 struct page
**pages
, unsigned int *pgbase
)
2491 const void *p
= buf
;
2493 *pgbase
= offset_in_page(buf
);
2495 while (p
< buf
+ buflen
) {
2496 *(pages
++) = virt_to_page(p
);
2497 p
+= PAGE_CACHE_SIZE
;
2501 struct nfs4_cached_acl
{
2507 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
2509 struct nfs_inode
*nfsi
= NFS_I(inode
);
2511 spin_lock(&inode
->i_lock
);
2512 kfree(nfsi
->nfs4_acl
);
2513 nfsi
->nfs4_acl
= acl
;
2514 spin_unlock(&inode
->i_lock
);
2517 static void nfs4_zap_acl_attr(struct inode
*inode
)
2519 nfs4_set_cached_acl(inode
, NULL
);
2522 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
2524 struct nfs_inode
*nfsi
= NFS_I(inode
);
2525 struct nfs4_cached_acl
*acl
;
2528 spin_lock(&inode
->i_lock
);
2529 acl
= nfsi
->nfs4_acl
;
2532 if (buf
== NULL
) /* user is just asking for length */
2534 if (acl
->cached
== 0)
2536 ret
= -ERANGE
; /* see getxattr(2) man page */
2537 if (acl
->len
> buflen
)
2539 memcpy(buf
, acl
->data
, acl
->len
);
2543 spin_unlock(&inode
->i_lock
);
2547 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
2549 struct nfs4_cached_acl
*acl
;
2551 if (buf
&& acl_len
<= PAGE_SIZE
) {
2552 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
2556 memcpy(acl
->data
, buf
, acl_len
);
2558 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
2565 nfs4_set_cached_acl(inode
, acl
);
2568 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2570 struct page
*pages
[NFS4ACL_MAXPAGES
];
2571 struct nfs_getaclargs args
= {
2572 .fh
= NFS_FH(inode
),
2576 size_t resp_len
= buflen
;
2578 struct rpc_message msg
= {
2579 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
2581 .rpc_resp
= &resp_len
,
2583 struct page
*localpage
= NULL
;
2586 if (buflen
< PAGE_SIZE
) {
2587 /* As long as we're doing a round trip to the server anyway,
2588 * let's be prepared for a page of acl data. */
2589 localpage
= alloc_page(GFP_KERNEL
);
2590 resp_buf
= page_address(localpage
);
2591 if (localpage
== NULL
)
2593 args
.acl_pages
[0] = localpage
;
2594 args
.acl_pgbase
= 0;
2595 resp_len
= args
.acl_len
= PAGE_SIZE
;
2598 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
2600 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2603 if (resp_len
> args
.acl_len
)
2604 nfs4_write_cached_acl(inode
, NULL
, resp_len
);
2606 nfs4_write_cached_acl(inode
, resp_buf
, resp_len
);
2609 if (resp_len
> buflen
)
2612 memcpy(buf
, resp_buf
, resp_len
);
2617 __free_page(localpage
);
2621 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2623 struct nfs4_exception exception
= { };
2626 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
2629 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
2630 } while (exception
.retry
);
2634 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
2636 struct nfs_server
*server
= NFS_SERVER(inode
);
2639 if (!nfs4_server_supports_acls(server
))
2641 ret
= nfs_revalidate_inode(server
, inode
);
2644 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
2647 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
2650 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2652 struct nfs_server
*server
= NFS_SERVER(inode
);
2653 struct page
*pages
[NFS4ACL_MAXPAGES
];
2654 struct nfs_setaclargs arg
= {
2655 .fh
= NFS_FH(inode
),
2659 struct rpc_message msg
= {
2660 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
2666 if (!nfs4_server_supports_acls(server
))
2668 nfs_inode_return_delegation(inode
);
2669 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
2670 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2671 nfs_zap_caches(inode
);
2675 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2677 struct nfs4_exception exception
= { };
2680 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2681 __nfs4_proc_set_acl(inode
, buf
, buflen
),
2683 } while (exception
.retry
);
2688 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
)
2690 struct nfs_client
*clp
= server
->nfs_client
;
2692 if (!clp
|| task
->tk_status
>= 0)
2694 switch(task
->tk_status
) {
2695 case -NFS4ERR_STALE_CLIENTID
:
2696 case -NFS4ERR_STALE_STATEID
:
2697 case -NFS4ERR_EXPIRED
:
2698 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
, NULL
);
2699 nfs4_schedule_state_recovery(clp
);
2700 if (test_bit(NFS4CLNT_STATE_RECOVER
, &clp
->cl_state
) == 0)
2701 rpc_wake_up_task(task
);
2702 task
->tk_status
= 0;
2704 case -NFS4ERR_DELAY
:
2705 nfs_inc_server_stats((struct nfs_server
*) server
,
2707 case -NFS4ERR_GRACE
:
2708 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
2709 task
->tk_status
= 0;
2711 case -NFS4ERR_OLD_STATEID
:
2712 task
->tk_status
= 0;
2715 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
2719 static int nfs4_wait_bit_interruptible(void *word
)
2721 if (signal_pending(current
))
2722 return -ERESTARTSYS
;
2727 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
)
2734 rwsem_acquire(&clp
->cl_sem
.dep_map
, 0, 0, _RET_IP_
);
2736 rpc_clnt_sigmask(clnt
, &oldset
);
2737 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_STATE_RECOVER
,
2738 nfs4_wait_bit_interruptible
,
2739 TASK_INTERRUPTIBLE
);
2740 rpc_clnt_sigunmask(clnt
, &oldset
);
2742 rwsem_release(&clp
->cl_sem
.dep_map
, 1, _RET_IP_
);
2746 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
2754 *timeout
= NFS4_POLL_RETRY_MIN
;
2755 if (*timeout
> NFS4_POLL_RETRY_MAX
)
2756 *timeout
= NFS4_POLL_RETRY_MAX
;
2757 rpc_clnt_sigmask(clnt
, &oldset
);
2758 if (clnt
->cl_intr
) {
2759 schedule_timeout_interruptible(*timeout
);
2763 schedule_timeout_uninterruptible(*timeout
);
2764 rpc_clnt_sigunmask(clnt
, &oldset
);
2769 /* This is the error handling routine for processes that are allowed
2772 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
2774 struct nfs_client
*clp
= server
->nfs_client
;
2775 int ret
= errorcode
;
2777 exception
->retry
= 0;
2781 case -NFS4ERR_STALE_CLIENTID
:
2782 case -NFS4ERR_STALE_STATEID
:
2783 case -NFS4ERR_EXPIRED
:
2784 nfs4_schedule_state_recovery(clp
);
2785 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
2787 exception
->retry
= 1;
2789 case -NFS4ERR_FILE_OPEN
:
2790 case -NFS4ERR_GRACE
:
2791 case -NFS4ERR_DELAY
:
2792 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
2795 case -NFS4ERR_OLD_STATEID
:
2796 exception
->retry
= 1;
2798 /* We failed to handle the error */
2799 return nfs4_map_errors(ret
);
2802 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
2804 nfs4_verifier sc_verifier
;
2805 struct nfs4_setclientid setclientid
= {
2806 .sc_verifier
= &sc_verifier
,
2809 struct rpc_message msg
= {
2810 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
2811 .rpc_argp
= &setclientid
,
2819 p
= (__be32
*)sc_verifier
.data
;
2820 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
2821 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
2824 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
2825 sizeof(setclientid
.sc_name
), "%s/%u.%u.%u.%u %s %u",
2826 clp
->cl_ipaddr
, NIPQUAD(clp
->cl_addr
.sin_addr
),
2827 cred
->cr_ops
->cr_name
,
2828 clp
->cl_id_uniquifier
);
2829 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
2830 sizeof(setclientid
.sc_netid
), "tcp");
2831 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
2832 sizeof(setclientid
.sc_uaddr
), "%s.%d.%d",
2833 clp
->cl_ipaddr
, port
>> 8, port
& 255);
2835 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2836 if (status
!= -NFS4ERR_CLID_INUSE
)
2841 ssleep(clp
->cl_lease_time
+ 1);
2843 if (++clp
->cl_id_uniquifier
== 0)
2849 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2851 struct nfs_fsinfo fsinfo
;
2852 struct rpc_message msg
= {
2853 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
2855 .rpc_resp
= &fsinfo
,
2862 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2864 spin_lock(&clp
->cl_lock
);
2865 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
2866 clp
->cl_last_renewal
= now
;
2867 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
2868 spin_unlock(&clp
->cl_lock
);
2873 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2878 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
2882 case -NFS4ERR_RESOURCE
:
2883 /* The IBM lawyers misread another document! */
2884 case -NFS4ERR_DELAY
:
2885 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
2891 struct nfs4_delegreturndata
{
2892 struct nfs4_delegreturnargs args
;
2893 struct nfs4_delegreturnres res
;
2895 nfs4_stateid stateid
;
2896 struct rpc_cred
*cred
;
2897 unsigned long timestamp
;
2898 struct nfs_fattr fattr
;
2902 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *calldata
)
2904 struct nfs4_delegreturndata
*data
= calldata
;
2905 struct rpc_message msg
= {
2906 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
2907 .rpc_argp
= &data
->args
,
2908 .rpc_resp
= &data
->res
,
2909 .rpc_cred
= data
->cred
,
2911 nfs_fattr_init(data
->res
.fattr
);
2912 rpc_call_setup(task
, &msg
, 0);
2915 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
2917 struct nfs4_delegreturndata
*data
= calldata
;
2918 data
->rpc_status
= task
->tk_status
;
2919 if (data
->rpc_status
== 0)
2920 renew_lease(data
->res
.server
, data
->timestamp
);
2923 static void nfs4_delegreturn_release(void *calldata
)
2925 struct nfs4_delegreturndata
*data
= calldata
;
2927 put_rpccred(data
->cred
);
2931 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
2932 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
2933 .rpc_call_done
= nfs4_delegreturn_done
,
2934 .rpc_release
= nfs4_delegreturn_release
,
2937 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2939 struct nfs4_delegreturndata
*data
;
2940 struct nfs_server
*server
= NFS_SERVER(inode
);
2941 struct rpc_task
*task
;
2944 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
2947 data
->args
.fhandle
= &data
->fh
;
2948 data
->args
.stateid
= &data
->stateid
;
2949 data
->args
.bitmask
= server
->attr_bitmask
;
2950 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
2951 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
2952 data
->res
.fattr
= &data
->fattr
;
2953 data
->res
.server
= server
;
2954 data
->cred
= get_rpccred(cred
);
2955 data
->timestamp
= jiffies
;
2956 data
->rpc_status
= 0;
2958 task
= rpc_run_task(NFS_CLIENT(inode
), RPC_TASK_ASYNC
, &nfs4_delegreturn_ops
, data
);
2960 return PTR_ERR(task
);
2961 status
= nfs4_wait_for_completion_rpc_task(task
);
2963 status
= data
->rpc_status
;
2965 nfs_post_op_update_inode(inode
, &data
->fattr
);
2971 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2973 struct nfs_server
*server
= NFS_SERVER(inode
);
2974 struct nfs4_exception exception
= { };
2977 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
);
2979 case -NFS4ERR_STALE_STATEID
:
2980 case -NFS4ERR_EXPIRED
:
2984 err
= nfs4_handle_exception(server
, err
, &exception
);
2985 } while (exception
.retry
);
2989 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
2990 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
2993 * sleep, with exponential backoff, and retry the LOCK operation.
2995 static unsigned long
2996 nfs4_set_lock_task_retry(unsigned long timeout
)
2998 schedule_timeout_interruptible(timeout
);
3000 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3001 return NFS4_LOCK_MAXTIMEOUT
;
3005 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3007 struct inode
*inode
= state
->inode
;
3008 struct nfs_server
*server
= NFS_SERVER(inode
);
3009 struct nfs_client
*clp
= server
->nfs_client
;
3010 struct nfs_lockt_args arg
= {
3011 .fh
= NFS_FH(inode
),
3014 struct nfs_lockt_res res
= {
3017 struct rpc_message msg
= {
3018 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3021 .rpc_cred
= state
->owner
->so_cred
,
3023 struct nfs4_lock_state
*lsp
;
3026 down_read(&clp
->cl_sem
);
3027 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3028 status
= nfs4_set_lock_state(state
, request
);
3031 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3032 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3033 status
= rpc_call_sync(server
->client
, &msg
, 0);
3036 request
->fl_type
= F_UNLCK
;
3038 case -NFS4ERR_DENIED
:
3041 request
->fl_ops
->fl_release_private(request
);
3043 up_read(&clp
->cl_sem
);
3047 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3049 struct nfs4_exception exception
= { };
3053 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3054 _nfs4_proc_getlk(state
, cmd
, request
),
3056 } while (exception
.retry
);
3060 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3063 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3065 res
= posix_lock_file_wait(file
, fl
);
3068 res
= flock_lock_file_wait(file
, fl
);
3076 struct nfs4_unlockdata
{
3077 struct nfs_locku_args arg
;
3078 struct nfs_locku_res res
;
3079 struct nfs4_lock_state
*lsp
;
3080 struct nfs_open_context
*ctx
;
3081 struct file_lock fl
;
3082 const struct nfs_server
*server
;
3083 unsigned long timestamp
;
3086 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3087 struct nfs_open_context
*ctx
,
3088 struct nfs4_lock_state
*lsp
,
3089 struct nfs_seqid
*seqid
)
3091 struct nfs4_unlockdata
*p
;
3092 struct inode
*inode
= lsp
->ls_state
->inode
;
3094 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
3097 p
->arg
.fh
= NFS_FH(inode
);
3099 p
->arg
.seqid
= seqid
;
3100 p
->arg
.stateid
= &lsp
->ls_stateid
;
3102 atomic_inc(&lsp
->ls_count
);
3103 /* Ensure we don't close file until we're done freeing locks! */
3104 p
->ctx
= get_nfs_open_context(ctx
);
3105 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3106 p
->server
= NFS_SERVER(inode
);
3110 static void nfs4_locku_release_calldata(void *data
)
3112 struct nfs4_unlockdata
*calldata
= data
;
3113 nfs_free_seqid(calldata
->arg
.seqid
);
3114 nfs4_put_lock_state(calldata
->lsp
);
3115 put_nfs_open_context(calldata
->ctx
);
3119 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3121 struct nfs4_unlockdata
*calldata
= data
;
3123 if (RPC_ASSASSINATED(task
))
3125 nfs_increment_lock_seqid(task
->tk_status
, calldata
->arg
.seqid
);
3126 switch (task
->tk_status
) {
3128 memcpy(calldata
->lsp
->ls_stateid
.data
,
3129 calldata
->res
.stateid
.data
,
3130 sizeof(calldata
->lsp
->ls_stateid
.data
));
3131 renew_lease(calldata
->server
, calldata
->timestamp
);
3133 case -NFS4ERR_STALE_STATEID
:
3134 case -NFS4ERR_EXPIRED
:
3137 if (nfs4_async_handle_error(task
, calldata
->server
) == -EAGAIN
)
3138 rpc_restart_call(task
);
3142 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3144 struct nfs4_unlockdata
*calldata
= data
;
3145 struct rpc_message msg
= {
3146 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3147 .rpc_argp
= &calldata
->arg
,
3148 .rpc_resp
= &calldata
->res
,
3149 .rpc_cred
= calldata
->lsp
->ls_state
->owner
->so_cred
,
3152 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3154 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3155 /* Note: exit _without_ running nfs4_locku_done */
3156 task
->tk_action
= NULL
;
3159 calldata
->timestamp
= jiffies
;
3160 rpc_call_setup(task
, &msg
, 0);
3163 static const struct rpc_call_ops nfs4_locku_ops
= {
3164 .rpc_call_prepare
= nfs4_locku_prepare
,
3165 .rpc_call_done
= nfs4_locku_done
,
3166 .rpc_release
= nfs4_locku_release_calldata
,
3169 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3170 struct nfs_open_context
*ctx
,
3171 struct nfs4_lock_state
*lsp
,
3172 struct nfs_seqid
*seqid
)
3174 struct nfs4_unlockdata
*data
;
3176 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3178 nfs_free_seqid(seqid
);
3179 return ERR_PTR(-ENOMEM
);
3182 return rpc_run_task(NFS_CLIENT(lsp
->ls_state
->inode
), RPC_TASK_ASYNC
, &nfs4_locku_ops
, data
);
3185 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3187 struct nfs_seqid
*seqid
;
3188 struct nfs4_lock_state
*lsp
;
3189 struct rpc_task
*task
;
3192 status
= nfs4_set_lock_state(state
, request
);
3193 /* Unlock _before_ we do the RPC call */
3194 request
->fl_flags
|= FL_EXISTS
;
3195 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
)
3199 /* Is this a delegated lock? */
3200 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3202 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3203 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3207 task
= nfs4_do_unlck(request
, request
->fl_file
->private_data
, lsp
, seqid
);
3208 status
= PTR_ERR(task
);
3211 status
= nfs4_wait_for_completion_rpc_task(task
);
3217 struct nfs4_lockdata
{
3218 struct nfs_lock_args arg
;
3219 struct nfs_lock_res res
;
3220 struct nfs4_lock_state
*lsp
;
3221 struct nfs_open_context
*ctx
;
3222 struct file_lock fl
;
3223 unsigned long timestamp
;
3228 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3229 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3231 struct nfs4_lockdata
*p
;
3232 struct inode
*inode
= lsp
->ls_state
->inode
;
3233 struct nfs_server
*server
= NFS_SERVER(inode
);
3235 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3239 p
->arg
.fh
= NFS_FH(inode
);
3241 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3242 if (p
->arg
.lock_seqid
== NULL
)
3244 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3245 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3246 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3248 atomic_inc(&lsp
->ls_count
);
3249 p
->ctx
= get_nfs_open_context(ctx
);
3250 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3257 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3259 struct nfs4_lockdata
*data
= calldata
;
3260 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3261 struct nfs4_state_owner
*sp
= state
->owner
;
3262 struct rpc_message msg
= {
3263 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3264 .rpc_argp
= &data
->arg
,
3265 .rpc_resp
= &data
->res
,
3266 .rpc_cred
= sp
->so_cred
,
3269 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3271 dprintk("%s: begin!\n", __FUNCTION__
);
3272 /* Do we need to do an open_to_lock_owner? */
3273 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3274 data
->arg
.open_seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
3275 if (data
->arg
.open_seqid
== NULL
) {
3276 data
->rpc_status
= -ENOMEM
;
3277 task
->tk_action
= NULL
;
3280 data
->arg
.open_stateid
= &state
->stateid
;
3281 data
->arg
.new_lock_owner
= 1;
3283 data
->timestamp
= jiffies
;
3284 rpc_call_setup(task
, &msg
, 0);
3286 dprintk("%s: done!, ret = %d\n", __FUNCTION__
, data
->rpc_status
);
3289 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3291 struct nfs4_lockdata
*data
= calldata
;
3293 dprintk("%s: begin!\n", __FUNCTION__
);
3295 data
->rpc_status
= task
->tk_status
;
3296 if (RPC_ASSASSINATED(task
))
3298 if (data
->arg
.new_lock_owner
!= 0) {
3299 nfs_increment_open_seqid(data
->rpc_status
, data
->arg
.open_seqid
);
3300 if (data
->rpc_status
== 0)
3301 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3305 if (data
->rpc_status
== 0) {
3306 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3307 sizeof(data
->lsp
->ls_stateid
.data
));
3308 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3309 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3311 nfs_increment_lock_seqid(data
->rpc_status
, data
->arg
.lock_seqid
);
3313 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, data
->rpc_status
);
3316 static void nfs4_lock_release(void *calldata
)
3318 struct nfs4_lockdata
*data
= calldata
;
3320 dprintk("%s: begin!\n", __FUNCTION__
);
3321 if (data
->arg
.open_seqid
!= NULL
)
3322 nfs_free_seqid(data
->arg
.open_seqid
);
3323 if (data
->cancelled
!= 0) {
3324 struct rpc_task
*task
;
3325 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3326 data
->arg
.lock_seqid
);
3329 dprintk("%s: cancelling lock!\n", __FUNCTION__
);
3331 nfs_free_seqid(data
->arg
.lock_seqid
);
3332 nfs4_put_lock_state(data
->lsp
);
3333 put_nfs_open_context(data
->ctx
);
3335 dprintk("%s: done!\n", __FUNCTION__
);
3338 static const struct rpc_call_ops nfs4_lock_ops
= {
3339 .rpc_call_prepare
= nfs4_lock_prepare
,
3340 .rpc_call_done
= nfs4_lock_done
,
3341 .rpc_release
= nfs4_lock_release
,
3344 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3346 struct nfs4_lockdata
*data
;
3347 struct rpc_task
*task
;
3350 dprintk("%s: begin!\n", __FUNCTION__
);
3351 data
= nfs4_alloc_lockdata(fl
, fl
->fl_file
->private_data
,
3352 fl
->fl_u
.nfs4_fl
.owner
);
3356 data
->arg
.block
= 1;
3358 data
->arg
.reclaim
= 1;
3359 task
= rpc_run_task(NFS_CLIENT(state
->inode
), RPC_TASK_ASYNC
,
3360 &nfs4_lock_ops
, data
);
3362 return PTR_ERR(task
);
3363 ret
= nfs4_wait_for_completion_rpc_task(task
);
3365 ret
= data
->rpc_status
;
3366 if (ret
== -NFS4ERR_DENIED
)
3369 data
->cancelled
= 1;
3371 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, ret
);
3375 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
3377 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3378 struct nfs4_exception exception
= { };
3382 /* Cache the lock if possible... */
3383 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3385 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
3386 if (err
!= -NFS4ERR_DELAY
)
3388 nfs4_handle_exception(server
, err
, &exception
);
3389 } while (exception
.retry
);
3393 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
3395 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3396 struct nfs4_exception exception
= { };
3399 err
= nfs4_set_lock_state(state
, request
);
3403 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3405 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
3406 if (err
!= -NFS4ERR_DELAY
)
3408 nfs4_handle_exception(server
, err
, &exception
);
3409 } while (exception
.retry
);
3413 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3415 struct nfs_client
*clp
= state
->owner
->so_client
;
3416 unsigned char fl_flags
= request
->fl_flags
;
3419 /* Is this a delegated open? */
3420 status
= nfs4_set_lock_state(state
, request
);
3423 request
->fl_flags
|= FL_ACCESS
;
3424 status
= do_vfs_lock(request
->fl_file
, request
);
3427 down_read(&clp
->cl_sem
);
3428 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3429 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3430 /* Yes: cache locks! */
3431 down_read(&nfsi
->rwsem
);
3432 /* ...but avoid races with delegation recall... */
3433 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3434 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
3435 status
= do_vfs_lock(request
->fl_file
, request
);
3436 up_read(&nfsi
->rwsem
);
3439 up_read(&nfsi
->rwsem
);
3441 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
3444 /* Note: we always want to sleep here! */
3445 request
->fl_flags
= fl_flags
| FL_SLEEP
;
3446 if (do_vfs_lock(request
->fl_file
, request
) < 0)
3447 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __FUNCTION__
);
3449 up_read(&clp
->cl_sem
);
3451 request
->fl_flags
= fl_flags
;
3455 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3457 struct nfs4_exception exception
= { };
3461 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3462 _nfs4_proc_setlk(state
, cmd
, request
),
3464 } while (exception
.retry
);
3469 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
3471 struct nfs_open_context
*ctx
;
3472 struct nfs4_state
*state
;
3473 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
3476 /* verify open state */
3477 ctx
= (struct nfs_open_context
*)filp
->private_data
;
3480 if (request
->fl_start
< 0 || request
->fl_end
< 0)
3484 return nfs4_proc_getlk(state
, F_GETLK
, request
);
3486 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
3489 if (request
->fl_type
== F_UNLCK
)
3490 return nfs4_proc_unlck(state
, cmd
, request
);
3493 status
= nfs4_proc_setlk(state
, cmd
, request
);
3494 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
3496 timeout
= nfs4_set_lock_task_retry(timeout
);
3497 status
= -ERESTARTSYS
;
3500 } while(status
< 0);
3504 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
3506 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3507 struct nfs4_exception exception
= { };
3510 err
= nfs4_set_lock_state(state
, fl
);
3514 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
3515 if (err
!= -NFS4ERR_DELAY
)
3517 err
= nfs4_handle_exception(server
, err
, &exception
);
3518 } while (exception
.retry
);
3523 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
3525 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
3526 size_t buflen
, int flags
)
3528 struct inode
*inode
= dentry
->d_inode
;
3530 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3533 if (!S_ISREG(inode
->i_mode
) &&
3534 (!S_ISDIR(inode
->i_mode
) || inode
->i_mode
& S_ISVTX
))
3537 return nfs4_proc_set_acl(inode
, buf
, buflen
);
3540 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
3541 * and that's what we'll do for e.g. user attributes that haven't been set.
3542 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
3543 * attributes in kernel-managed attribute namespaces. */
3544 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
3547 struct inode
*inode
= dentry
->d_inode
;
3549 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3552 return nfs4_proc_get_acl(inode
, buf
, buflen
);
3555 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
3557 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
3559 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
3561 if (buf
&& buflen
< len
)
3564 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
3568 int nfs4_proc_fs_locations(struct inode
*dir
, struct qstr
*name
,
3569 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
3571 struct nfs_server
*server
= NFS_SERVER(dir
);
3573 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
3574 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
3576 struct nfs4_fs_locations_arg args
= {
3577 .dir_fh
= NFS_FH(dir
),
3582 struct rpc_message msg
= {
3583 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
3585 .rpc_resp
= fs_locations
,
3589 dprintk("%s: start\n", __FUNCTION__
);
3590 nfs_fattr_init(&fs_locations
->fattr
);
3591 fs_locations
->server
= server
;
3592 fs_locations
->nlocations
= 0;
3593 status
= rpc_call_sync(server
->client
, &msg
, 0);
3594 dprintk("%s: returned status = %d\n", __FUNCTION__
, status
);
3598 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops
= {
3599 .recover_open
= nfs4_open_reclaim
,
3600 .recover_lock
= nfs4_lock_reclaim
,
3603 struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops
= {
3604 .recover_open
= nfs4_open_expired
,
3605 .recover_lock
= nfs4_lock_expired
,
3608 static const struct inode_operations nfs4_file_inode_operations
= {
3609 .permission
= nfs_permission
,
3610 .getattr
= nfs_getattr
,
3611 .setattr
= nfs_setattr
,
3612 .getxattr
= nfs4_getxattr
,
3613 .setxattr
= nfs4_setxattr
,
3614 .listxattr
= nfs4_listxattr
,
3617 const struct nfs_rpc_ops nfs_v4_clientops
= {
3618 .version
= 4, /* protocol version */
3619 .dentry_ops
= &nfs4_dentry_operations
,
3620 .dir_inode_ops
= &nfs4_dir_inode_operations
,
3621 .file_inode_ops
= &nfs4_file_inode_operations
,
3622 .getroot
= nfs4_proc_get_root
,
3623 .getattr
= nfs4_proc_getattr
,
3624 .setattr
= nfs4_proc_setattr
,
3625 .lookupfh
= nfs4_proc_lookupfh
,
3626 .lookup
= nfs4_proc_lookup
,
3627 .access
= nfs4_proc_access
,
3628 .readlink
= nfs4_proc_readlink
,
3629 .create
= nfs4_proc_create
,
3630 .remove
= nfs4_proc_remove
,
3631 .unlink_setup
= nfs4_proc_unlink_setup
,
3632 .unlink_done
= nfs4_proc_unlink_done
,
3633 .rename
= nfs4_proc_rename
,
3634 .link
= nfs4_proc_link
,
3635 .symlink
= nfs4_proc_symlink
,
3636 .mkdir
= nfs4_proc_mkdir
,
3637 .rmdir
= nfs4_proc_remove
,
3638 .readdir
= nfs4_proc_readdir
,
3639 .mknod
= nfs4_proc_mknod
,
3640 .statfs
= nfs4_proc_statfs
,
3641 .fsinfo
= nfs4_proc_fsinfo
,
3642 .pathconf
= nfs4_proc_pathconf
,
3643 .set_capabilities
= nfs4_server_capabilities
,
3644 .decode_dirent
= nfs4_decode_dirent
,
3645 .read_setup
= nfs4_proc_read_setup
,
3646 .read_done
= nfs4_read_done
,
3647 .write_setup
= nfs4_proc_write_setup
,
3648 .write_done
= nfs4_write_done
,
3649 .commit_setup
= nfs4_proc_commit_setup
,
3650 .commit_done
= nfs4_commit_done
,
3651 .file_open
= nfs_open
,
3652 .file_release
= nfs_release
,
3653 .lock
= nfs4_proc_lock
,
3654 .clear_acl_cache
= nfs4_zap_acl_attr
,