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
;
234 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
236 p
->o_res
.f_attr
= &p
->f_attr
;
237 p
->o_res
.dir_attr
= &p
->dir_attr
;
238 p
->o_res
.server
= p
->o_arg
.server
;
239 nfs_fattr_init(&p
->f_attr
);
240 nfs_fattr_init(&p
->dir_attr
);
243 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
244 struct nfs4_state_owner
*sp
, int flags
,
245 const struct iattr
*attrs
)
247 struct dentry
*parent
= dget_parent(path
->dentry
);
248 struct inode
*dir
= parent
->d_inode
;
249 struct nfs_server
*server
= NFS_SERVER(dir
);
250 struct nfs4_opendata
*p
;
252 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
255 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
256 if (p
->o_arg
.seqid
== NULL
)
258 p
->path
.mnt
= mntget(path
->mnt
);
259 p
->path
.dentry
= dget(path
->dentry
);
262 atomic_inc(&sp
->so_count
);
263 p
->o_arg
.fh
= NFS_FH(dir
);
264 p
->o_arg
.open_flags
= flags
,
265 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
266 p
->o_arg
.id
= sp
->so_owner_id
.id
;
267 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
268 p
->o_arg
.server
= server
;
269 p
->o_arg
.bitmask
= server
->attr_bitmask
;
270 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
271 if (flags
& O_EXCL
) {
272 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
275 } else if (flags
& O_CREAT
) {
276 p
->o_arg
.u
.attrs
= &p
->attrs
;
277 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
279 p
->c_arg
.fh
= &p
->o_res
.fh
;
280 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
281 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
282 nfs4_init_opendata_res(p
);
292 static void nfs4_opendata_free(struct kref
*kref
)
294 struct nfs4_opendata
*p
= container_of(kref
,
295 struct nfs4_opendata
, kref
);
297 nfs_free_seqid(p
->o_arg
.seqid
);
298 nfs4_put_state_owner(p
->owner
);
300 dput(p
->path
.dentry
);
305 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
308 kref_put(&p
->kref
, nfs4_opendata_free
);
311 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
316 rpc_clnt_sigmask(task
->tk_client
, &oldset
);
317 ret
= rpc_wait_for_completion_task(task
);
318 rpc_clnt_sigunmask(task
->tk_client
, &oldset
);
322 static inline void update_open_stateflags(struct nfs4_state
*state
, mode_t open_flags
)
324 switch (open_flags
) {
331 case FMODE_READ
|FMODE_WRITE
:
336 static void update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, int open_flags
)
338 struct inode
*inode
= state
->inode
;
340 open_flags
&= (FMODE_READ
|FMODE_WRITE
);
341 /* Protect against nfs4_find_state_byowner() */
342 spin_lock(&state
->owner
->so_lock
);
343 spin_lock(&inode
->i_lock
);
344 memcpy(&state
->stateid
, stateid
, sizeof(state
->stateid
));
345 update_open_stateflags(state
, open_flags
);
346 nfs4_state_set_mode_locked(state
, state
->state
| open_flags
);
347 spin_unlock(&inode
->i_lock
);
348 spin_unlock(&state
->owner
->so_lock
);
351 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
354 struct nfs4_state
*state
= NULL
;
356 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
358 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
361 state
= nfs4_get_open_state(inode
, data
->owner
);
364 update_open_stateid(state
, &data
->o_res
.stateid
, data
->o_arg
.open_flags
);
365 if (data
->o_res
.delegation_type
!= 0) {
366 struct nfs_inode
*nfsi
= NFS_I(inode
);
367 int delegation_flags
= 0;
369 if (nfsi
->delegation
)
370 delegation_flags
= nfsi
->delegation
->flags
;
371 if (!(delegation_flags
& NFS_DELEGATION_NEED_RECLAIM
))
372 nfs_inode_set_delegation(state
->inode
,
373 data
->owner
->so_cred
,
376 nfs_inode_reclaim_delegation(state
->inode
,
377 data
->owner
->so_cred
,
386 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
388 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
389 struct nfs_open_context
*ctx
;
391 spin_lock(&state
->inode
->i_lock
);
392 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
393 if (ctx
->state
!= state
)
395 get_nfs_open_context(ctx
);
396 spin_unlock(&state
->inode
->i_lock
);
399 spin_unlock(&state
->inode
->i_lock
);
400 return ERR_PTR(-ENOENT
);
403 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, mode_t openflags
, struct nfs4_state
**res
)
405 struct nfs4_state
*newstate
;
408 opendata
->o_arg
.open_flags
= openflags
;
409 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
410 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
411 nfs4_init_opendata_res(opendata
);
412 ret
= _nfs4_proc_open(opendata
);
415 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
416 if (newstate
!= NULL
)
417 nfs4_close_state(&opendata
->path
, newstate
, openflags
);
422 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
424 struct nfs4_state
*newstate
;
427 /* memory barrier prior to reading state->n_* */
428 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
430 if (state
->n_rdwr
!= 0) {
431 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
434 if (newstate
!= state
)
437 if (state
->n_wronly
!= 0) {
438 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
441 if (newstate
!= state
)
444 if (state
->n_rdonly
!= 0) {
445 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
448 if (newstate
!= state
)
456 * reclaim state on the server after a reboot.
458 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
460 struct nfs_delegation
*delegation
= NFS_I(state
->inode
)->delegation
;
461 struct nfs4_opendata
*opendata
;
462 int delegation_type
= 0;
465 if (delegation
!= NULL
) {
466 if (!(delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)) {
467 memcpy(&state
->stateid
, &delegation
->stateid
,
468 sizeof(state
->stateid
));
469 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
472 delegation_type
= delegation
->type
;
474 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, NULL
);
475 if (opendata
== NULL
)
477 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
478 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
479 nfs_copy_fh(&opendata
->o_res
.fh
, opendata
->o_arg
.fh
);
480 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
481 status
= nfs4_open_recover(opendata
, state
);
482 nfs4_opendata_put(opendata
);
486 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
488 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
489 struct nfs4_exception exception
= { };
492 err
= _nfs4_do_open_reclaim(ctx
, state
);
493 if (err
!= -NFS4ERR_DELAY
)
495 nfs4_handle_exception(server
, err
, &exception
);
496 } while (exception
.retry
);
500 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
502 struct nfs_open_context
*ctx
;
505 ctx
= nfs4_state_find_open_context(state
);
508 ret
= nfs4_do_open_reclaim(ctx
, state
);
509 put_nfs_open_context(ctx
);
513 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
515 struct nfs4_state_owner
*sp
= state
->owner
;
516 struct nfs4_opendata
*opendata
;
519 if (!test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
521 opendata
= nfs4_opendata_alloc(&ctx
->path
, sp
, 0, NULL
);
522 if (opendata
== NULL
)
524 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
525 memcpy(opendata
->o_arg
.u
.delegation
.data
, state
->stateid
.data
,
526 sizeof(opendata
->o_arg
.u
.delegation
.data
));
527 ret
= nfs4_open_recover(opendata
, state
);
528 nfs4_opendata_put(opendata
);
532 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
534 struct nfs4_exception exception
= { };
535 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
538 err
= _nfs4_open_delegation_recall(ctx
, state
);
542 case -NFS4ERR_STALE_CLIENTID
:
543 case -NFS4ERR_STALE_STATEID
:
544 case -NFS4ERR_EXPIRED
:
545 /* Don't recall a delegation if it was lost */
546 nfs4_schedule_state_recovery(server
->nfs_client
);
549 err
= nfs4_handle_exception(server
, err
, &exception
);
550 } while (exception
.retry
);
554 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
556 struct nfs4_opendata
*data
= calldata
;
557 struct rpc_message msg
= {
558 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
559 .rpc_argp
= &data
->c_arg
,
560 .rpc_resp
= &data
->c_res
,
561 .rpc_cred
= data
->owner
->so_cred
,
563 data
->timestamp
= jiffies
;
564 rpc_call_setup(task
, &msg
, 0);
567 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
569 struct nfs4_opendata
*data
= calldata
;
571 data
->rpc_status
= task
->tk_status
;
572 if (RPC_ASSASSINATED(task
))
574 if (data
->rpc_status
== 0) {
575 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
576 sizeof(data
->o_res
.stateid
.data
));
577 renew_lease(data
->o_res
.server
, data
->timestamp
);
579 nfs_increment_open_seqid(data
->rpc_status
, data
->c_arg
.seqid
);
580 nfs_confirm_seqid(&data
->owner
->so_seqid
, data
->rpc_status
);
583 static void nfs4_open_confirm_release(void *calldata
)
585 struct nfs4_opendata
*data
= calldata
;
586 struct nfs4_state
*state
= NULL
;
588 /* If this request hasn't been cancelled, do nothing */
589 if (data
->cancelled
== 0)
591 /* In case of error, no cleanup! */
592 if (data
->rpc_status
!= 0)
594 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
595 state
= nfs4_opendata_to_nfs4_state(data
);
597 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
599 nfs4_opendata_put(data
);
602 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
603 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
604 .rpc_call_done
= nfs4_open_confirm_done
,
605 .rpc_release
= nfs4_open_confirm_release
,
609 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
611 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
613 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
614 struct rpc_task
*task
;
617 kref_get(&data
->kref
);
619 * If rpc_run_task() ends up calling ->rpc_release(), we
620 * want to ensure that it takes the 'error' code path.
622 data
->rpc_status
= -ENOMEM
;
623 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_confirm_ops
, data
);
625 return PTR_ERR(task
);
626 status
= nfs4_wait_for_completion_rpc_task(task
);
631 status
= data
->rpc_status
;
636 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
638 struct nfs4_opendata
*data
= calldata
;
639 struct nfs4_state_owner
*sp
= data
->owner
;
640 struct rpc_message msg
= {
641 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
642 .rpc_argp
= &data
->o_arg
,
643 .rpc_resp
= &data
->o_res
,
644 .rpc_cred
= sp
->so_cred
,
647 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
649 /* Update sequence id. */
650 data
->o_arg
.id
= sp
->so_owner_id
.id
;
651 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
652 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
653 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
654 data
->timestamp
= jiffies
;
655 rpc_call_setup(task
, &msg
, 0);
658 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
660 struct nfs4_opendata
*data
= calldata
;
662 data
->rpc_status
= task
->tk_status
;
663 if (RPC_ASSASSINATED(task
))
665 if (task
->tk_status
== 0) {
666 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
670 data
->rpc_status
= -ELOOP
;
673 data
->rpc_status
= -EISDIR
;
676 data
->rpc_status
= -ENOTDIR
;
678 renew_lease(data
->o_res
.server
, data
->timestamp
);
680 nfs_increment_open_seqid(data
->rpc_status
, data
->o_arg
.seqid
);
683 static void nfs4_open_release(void *calldata
)
685 struct nfs4_opendata
*data
= calldata
;
686 struct nfs4_state
*state
= NULL
;
688 /* If this request hasn't been cancelled, do nothing */
689 if (data
->cancelled
== 0)
691 /* In case of error, no cleanup! */
692 if (data
->rpc_status
!= 0)
694 /* In case we need an open_confirm, no cleanup! */
695 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
697 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
698 state
= nfs4_opendata_to_nfs4_state(data
);
700 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
702 nfs4_opendata_put(data
);
705 static const struct rpc_call_ops nfs4_open_ops
= {
706 .rpc_call_prepare
= nfs4_open_prepare
,
707 .rpc_call_done
= nfs4_open_done
,
708 .rpc_release
= nfs4_open_release
,
712 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
714 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
716 struct inode
*dir
= data
->dir
->d_inode
;
717 struct nfs_server
*server
= NFS_SERVER(dir
);
718 struct nfs_openargs
*o_arg
= &data
->o_arg
;
719 struct nfs_openres
*o_res
= &data
->o_res
;
720 struct rpc_task
*task
;
723 kref_get(&data
->kref
);
725 * If rpc_run_task() ends up calling ->rpc_release(), we
726 * want to ensure that it takes the 'error' code path.
728 data
->rpc_status
= -ENOMEM
;
730 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_ops
, data
);
732 return PTR_ERR(task
);
733 status
= nfs4_wait_for_completion_rpc_task(task
);
738 status
= data
->rpc_status
;
743 if (o_arg
->open_flags
& O_CREAT
) {
744 update_changeattr(dir
, &o_res
->cinfo
);
745 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
747 nfs_refresh_inode(dir
, o_res
->dir_attr
);
748 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
749 status
= _nfs4_proc_open_confirm(data
);
753 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
754 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
755 return server
->nfs_client
->rpc_ops
->getattr(server
, &o_res
->fh
, o_res
->f_attr
);
759 static int _nfs4_do_access(struct inode
*inode
, struct rpc_cred
*cred
, int openflags
)
761 struct nfs_access_entry cache
;
765 if (openflags
& FMODE_READ
)
767 if (openflags
& FMODE_WRITE
)
769 if (openflags
& FMODE_EXEC
)
771 status
= nfs_access_get_cached(inode
, cred
, &cache
);
775 /* Be clever: ask server to check for all possible rights */
776 cache
.mask
= MAY_EXEC
| MAY_WRITE
| MAY_READ
;
778 cache
.jiffies
= jiffies
;
779 status
= _nfs4_proc_access(inode
, &cache
);
782 nfs_access_add_cache(inode
, &cache
);
784 if ((cache
.mask
& mask
) == mask
)
789 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
791 struct nfs_client
*clp
= server
->nfs_client
;
795 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
798 if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
))
800 nfs4_schedule_state_recovery(clp
);
807 * reclaim state on the server after a network partition.
808 * Assumes caller holds the appropriate lock
810 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
812 struct inode
*inode
= state
->inode
;
813 struct nfs_delegation
*delegation
= NFS_I(inode
)->delegation
;
814 struct nfs4_opendata
*opendata
;
815 int openflags
= state
->state
& (FMODE_READ
|FMODE_WRITE
);
818 if (delegation
!= NULL
&& !(delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)) {
819 ret
= _nfs4_do_access(inode
, ctx
->cred
, openflags
);
822 memcpy(&state
->stateid
, &delegation
->stateid
, sizeof(state
->stateid
));
823 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
826 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, openflags
, NULL
);
827 if (opendata
== NULL
)
829 ret
= nfs4_open_recover(opendata
, state
);
830 if (ret
== -ESTALE
) {
831 /* Invalidate the state owner so we don't ever use it again */
832 nfs4_drop_state_owner(state
->owner
);
833 d_drop(ctx
->path
.dentry
);
835 nfs4_opendata_put(opendata
);
839 static inline int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
841 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
842 struct nfs4_exception exception
= { };
846 err
= _nfs4_open_expired(ctx
, state
);
847 if (err
== -NFS4ERR_DELAY
)
848 nfs4_handle_exception(server
, err
, &exception
);
849 } while (exception
.retry
);
853 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
855 struct nfs_open_context
*ctx
;
858 ctx
= nfs4_state_find_open_context(state
);
861 ret
= nfs4_do_open_expired(ctx
, state
);
862 put_nfs_open_context(ctx
);
867 * Returns a referenced nfs4_state if there is an open delegation on the file
869 static int _nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
871 struct nfs_delegation
*delegation
;
872 struct nfs_server
*server
= NFS_SERVER(inode
);
873 struct nfs_client
*clp
= server
->nfs_client
;
874 struct nfs_inode
*nfsi
= NFS_I(inode
);
875 struct nfs4_state_owner
*sp
= NULL
;
876 struct nfs4_state
*state
= NULL
;
877 int open_flags
= flags
& (FMODE_READ
|FMODE_WRITE
);
881 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
882 dprintk("%s: nfs4_get_state_owner failed!\n", __FUNCTION__
);
885 err
= nfs4_recover_expired_lease(server
);
887 goto out_put_state_owner
;
888 /* Protect against reboot recovery - NOTE ORDER! */
889 down_read(&clp
->cl_sem
);
890 /* Protect against delegation recall */
891 down_read(&nfsi
->rwsem
);
892 delegation
= NFS_I(inode
)->delegation
;
894 if (delegation
== NULL
|| (delegation
->type
& open_flags
) != open_flags
)
897 state
= nfs4_get_open_state(inode
, sp
);
902 if ((state
->state
& open_flags
) == open_flags
) {
903 spin_lock(&inode
->i_lock
);
904 update_open_stateflags(state
, open_flags
);
905 spin_unlock(&inode
->i_lock
);
907 } else if (state
->state
!= 0)
908 goto out_put_open_state
;
911 err
= _nfs4_do_access(inode
, cred
, open_flags
);
914 goto out_put_open_state
;
915 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
916 update_open_stateid(state
, &delegation
->stateid
, open_flags
);
918 nfs4_put_state_owner(sp
);
919 up_read(&nfsi
->rwsem
);
920 up_read(&clp
->cl_sem
);
924 nfs4_put_open_state(state
);
926 up_read(&nfsi
->rwsem
);
927 up_read(&clp
->cl_sem
);
929 nfs_inode_return_delegation(inode
);
931 nfs4_put_state_owner(sp
);
935 static struct nfs4_state
*nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
)
937 struct nfs4_exception exception
= { };
938 struct nfs4_state
*res
= ERR_PTR(-EIO
);
942 err
= _nfs4_open_delegated(inode
, flags
, cred
, &res
);
945 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(inode
),
947 } while (exception
.retry
);
952 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
953 * fields corresponding to attributes that were used to store the verifier.
954 * Make sure we clobber those fields in the later setattr call
956 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
958 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
959 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
960 sattr
->ia_valid
|= ATTR_ATIME
;
962 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
963 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
964 sattr
->ia_valid
|= ATTR_MTIME
;
968 * Returns a referenced nfs4_state
970 static int _nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
972 struct nfs4_state_owner
*sp
;
973 struct nfs4_state
*state
= NULL
;
974 struct nfs_server
*server
= NFS_SERVER(dir
);
975 struct nfs_client
*clp
= server
->nfs_client
;
976 struct nfs4_opendata
*opendata
;
979 /* Protect against reboot recovery conflicts */
981 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
982 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
985 status
= nfs4_recover_expired_lease(server
);
987 goto err_put_state_owner
;
988 down_read(&clp
->cl_sem
);
990 opendata
= nfs4_opendata_alloc(path
, sp
, flags
, sattr
);
991 if (opendata
== NULL
)
992 goto err_release_rwsem
;
994 status
= _nfs4_proc_open(opendata
);
996 goto err_opendata_put
;
998 if (opendata
->o_arg
.open_flags
& O_EXCL
)
999 nfs4_exclusive_attrset(opendata
, sattr
);
1002 state
= nfs4_opendata_to_nfs4_state(opendata
);
1004 goto err_opendata_put
;
1005 nfs4_opendata_put(opendata
);
1006 nfs4_put_state_owner(sp
);
1007 up_read(&clp
->cl_sem
);
1011 nfs4_opendata_put(opendata
);
1013 up_read(&clp
->cl_sem
);
1014 err_put_state_owner
:
1015 nfs4_put_state_owner(sp
);
1022 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1024 struct nfs4_exception exception
= { };
1025 struct nfs4_state
*res
;
1029 status
= _nfs4_do_open(dir
, path
, flags
, sattr
, cred
, &res
);
1032 /* NOTE: BAD_SEQID means the server and client disagree about the
1033 * book-keeping w.r.t. state-changing operations
1034 * (OPEN/CLOSE/LOCK/LOCKU...)
1035 * It is actually a sign of a bug on the client or on the server.
1037 * If we receive a BAD_SEQID error in the particular case of
1038 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1039 * have unhashed the old state_owner for us, and that we can
1040 * therefore safely retry using a new one. We should still warn
1041 * the user though...
1043 if (status
== -NFS4ERR_BAD_SEQID
) {
1044 printk(KERN_WARNING
"NFS: v4 server returned a bad sequence-id error!\n");
1045 exception
.retry
= 1;
1049 * BAD_STATEID on OPEN means that the server cancelled our
1050 * state before it received the OPEN_CONFIRM.
1051 * Recover by retrying the request as per the discussion
1052 * on Page 181 of RFC3530.
1054 if (status
== -NFS4ERR_BAD_STATEID
) {
1055 exception
.retry
= 1;
1058 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1059 status
, &exception
));
1060 } while (exception
.retry
);
1064 static int _nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1065 struct iattr
*sattr
, struct nfs4_state
*state
)
1067 struct nfs_server
*server
= NFS_SERVER(inode
);
1068 struct nfs_setattrargs arg
= {
1069 .fh
= NFS_FH(inode
),
1072 .bitmask
= server
->attr_bitmask
,
1074 struct nfs_setattrres res
= {
1078 struct rpc_message msg
= {
1079 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1083 unsigned long timestamp
= jiffies
;
1086 nfs_fattr_init(fattr
);
1088 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1089 /* Use that stateid */
1090 } else if (state
!= NULL
) {
1091 msg
.rpc_cred
= state
->owner
->so_cred
;
1092 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1094 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1096 status
= rpc_call_sync(server
->client
, &msg
, 0);
1097 if (status
== 0 && state
!= NULL
)
1098 renew_lease(server
, timestamp
);
1102 static int nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1103 struct iattr
*sattr
, struct nfs4_state
*state
)
1105 struct nfs_server
*server
= NFS_SERVER(inode
);
1106 struct nfs4_exception exception
= { };
1109 err
= nfs4_handle_exception(server
,
1110 _nfs4_do_setattr(inode
, fattr
, sattr
, state
),
1112 } while (exception
.retry
);
1116 struct nfs4_closedata
{
1118 struct inode
*inode
;
1119 struct nfs4_state
*state
;
1120 struct nfs_closeargs arg
;
1121 struct nfs_closeres res
;
1122 struct nfs_fattr fattr
;
1123 unsigned long timestamp
;
1126 static void nfs4_free_closedata(void *data
)
1128 struct nfs4_closedata
*calldata
= data
;
1129 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1131 nfs4_put_open_state(calldata
->state
);
1132 nfs_free_seqid(calldata
->arg
.seqid
);
1133 nfs4_put_state_owner(sp
);
1134 dput(calldata
->path
.dentry
);
1135 mntput(calldata
->path
.mnt
);
1139 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1141 struct nfs4_closedata
*calldata
= data
;
1142 struct nfs4_state
*state
= calldata
->state
;
1143 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1145 if (RPC_ASSASSINATED(task
))
1147 /* hmm. we are done with the inode, and in the process of freeing
1148 * the state_owner. we keep this around to process errors
1150 nfs_increment_open_seqid(task
->tk_status
, calldata
->arg
.seqid
);
1151 switch (task
->tk_status
) {
1153 memcpy(&state
->stateid
, &calldata
->res
.stateid
,
1154 sizeof(state
->stateid
));
1155 renew_lease(server
, calldata
->timestamp
);
1157 case -NFS4ERR_STALE_STATEID
:
1158 case -NFS4ERR_EXPIRED
:
1161 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
1162 rpc_restart_call(task
);
1166 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1169 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1171 struct nfs4_closedata
*calldata
= data
;
1172 struct nfs4_state
*state
= calldata
->state
;
1173 struct rpc_message msg
= {
1174 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1175 .rpc_argp
= &calldata
->arg
,
1176 .rpc_resp
= &calldata
->res
,
1177 .rpc_cred
= state
->owner
->so_cred
,
1179 int mode
= 0, old_mode
;
1181 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1183 /* Recalculate the new open mode in case someone reopened the file
1184 * while we were waiting in line to be scheduled.
1186 spin_lock(&state
->owner
->so_lock
);
1187 spin_lock(&calldata
->inode
->i_lock
);
1188 mode
= old_mode
= state
->state
;
1189 if (state
->n_rdwr
== 0) {
1190 if (state
->n_rdonly
== 0)
1191 mode
&= ~FMODE_READ
;
1192 if (state
->n_wronly
== 0)
1193 mode
&= ~FMODE_WRITE
;
1195 nfs4_state_set_mode_locked(state
, mode
);
1196 spin_unlock(&calldata
->inode
->i_lock
);
1197 spin_unlock(&state
->owner
->so_lock
);
1198 if (mode
== old_mode
|| test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
1199 /* Note: exit _without_ calling nfs4_close_done */
1200 task
->tk_action
= NULL
;
1203 nfs_fattr_init(calldata
->res
.fattr
);
1205 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1206 calldata
->arg
.open_flags
= mode
;
1207 calldata
->timestamp
= jiffies
;
1208 rpc_call_setup(task
, &msg
, 0);
1211 static const struct rpc_call_ops nfs4_close_ops
= {
1212 .rpc_call_prepare
= nfs4_close_prepare
,
1213 .rpc_call_done
= nfs4_close_done
,
1214 .rpc_release
= nfs4_free_closedata
,
1218 * It is possible for data to be read/written from a mem-mapped file
1219 * after the sys_close call (which hits the vfs layer as a flush).
1220 * This means that we can't safely call nfsv4 close on a file until
1221 * the inode is cleared. This in turn means that we are not good
1222 * NFSv4 citizens - we do not indicate to the server to update the file's
1223 * share state even when we are done with one of the three share
1224 * stateid's in the inode.
1226 * NOTE: Caller must be holding the sp->so_owner semaphore!
1228 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
)
1230 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1231 struct nfs4_closedata
*calldata
;
1232 struct nfs4_state_owner
*sp
= state
->owner
;
1233 struct rpc_task
*task
;
1234 int status
= -ENOMEM
;
1236 calldata
= kmalloc(sizeof(*calldata
), GFP_KERNEL
);
1237 if (calldata
== NULL
)
1239 calldata
->inode
= state
->inode
;
1240 calldata
->state
= state
;
1241 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1242 calldata
->arg
.stateid
= &state
->stateid
;
1243 /* Serialization for the sequence id */
1244 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1245 if (calldata
->arg
.seqid
== NULL
)
1246 goto out_free_calldata
;
1247 calldata
->arg
.bitmask
= server
->attr_bitmask
;
1248 calldata
->res
.fattr
= &calldata
->fattr
;
1249 calldata
->res
.server
= server
;
1250 calldata
->path
.mnt
= mntget(path
->mnt
);
1251 calldata
->path
.dentry
= dget(path
->dentry
);
1253 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_close_ops
, calldata
);
1255 return PTR_ERR(task
);
1261 nfs4_put_open_state(state
);
1262 nfs4_put_state_owner(sp
);
1266 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
)
1271 /* If the open_intent is for execute, we have an extra check to make */
1272 if (nd
->intent
.open
.flags
& FMODE_EXEC
) {
1273 ret
= _nfs4_do_access(state
->inode
,
1274 state
->owner
->so_cred
,
1275 nd
->intent
.open
.flags
);
1279 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1280 if (!IS_ERR(filp
)) {
1281 struct nfs_open_context
*ctx
;
1282 ctx
= (struct nfs_open_context
*)filp
->private_data
;
1286 ret
= PTR_ERR(filp
);
1288 nfs4_close_state(path
, state
, nd
->intent
.open
.flags
);
1293 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1295 struct path path
= {
1300 struct rpc_cred
*cred
;
1301 struct nfs4_state
*state
;
1304 if (nd
->flags
& LOOKUP_CREATE
) {
1305 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1306 attr
.ia_valid
= ATTR_MODE
;
1307 if (!IS_POSIXACL(dir
))
1308 attr
.ia_mode
&= ~current
->fs
->umask
;
1311 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1314 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1316 return (struct dentry
*)cred
;
1317 state
= nfs4_do_open(dir
, &path
, nd
->intent
.open
.flags
, &attr
, cred
);
1319 if (IS_ERR(state
)) {
1320 if (PTR_ERR(state
) == -ENOENT
)
1321 d_add(dentry
, NULL
);
1322 return (struct dentry
*)state
;
1324 res
= d_add_unique(dentry
, igrab(state
->inode
));
1327 nfs4_intent_set_file(nd
, &path
, state
);
1332 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1334 struct path path
= {
1338 struct rpc_cred
*cred
;
1339 struct nfs4_state
*state
;
1341 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1343 return PTR_ERR(cred
);
1344 state
= nfs4_open_delegated(dentry
->d_inode
, openflags
, cred
);
1346 state
= nfs4_do_open(dir
, &path
, openflags
, NULL
, cred
);
1348 if (IS_ERR(state
)) {
1349 switch (PTR_ERR(state
)) {
1355 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1361 if (state
->inode
== dentry
->d_inode
) {
1362 nfs4_intent_set_file(nd
, &path
, state
);
1365 nfs4_close_state(&path
, state
, openflags
);
1372 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1374 struct nfs4_server_caps_res res
= {};
1375 struct rpc_message msg
= {
1376 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1377 .rpc_argp
= fhandle
,
1382 status
= rpc_call_sync(server
->client
, &msg
, 0);
1384 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
1385 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
1386 server
->caps
|= NFS_CAP_ACLS
;
1387 if (res
.has_links
!= 0)
1388 server
->caps
|= NFS_CAP_HARDLINKS
;
1389 if (res
.has_symlinks
!= 0)
1390 server
->caps
|= NFS_CAP_SYMLINKS
;
1391 server
->acl_bitmask
= res
.acl_bitmask
;
1396 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1398 struct nfs4_exception exception
= { };
1401 err
= nfs4_handle_exception(server
,
1402 _nfs4_server_capabilities(server
, fhandle
),
1404 } while (exception
.retry
);
1408 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1409 struct nfs_fsinfo
*info
)
1411 struct nfs4_lookup_root_arg args
= {
1412 .bitmask
= nfs4_fattr_bitmap
,
1414 struct nfs4_lookup_res res
= {
1416 .fattr
= info
->fattr
,
1419 struct rpc_message msg
= {
1420 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
1424 nfs_fattr_init(info
->fattr
);
1425 return rpc_call_sync(server
->client
, &msg
, 0);
1428 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1429 struct nfs_fsinfo
*info
)
1431 struct nfs4_exception exception
= { };
1434 err
= nfs4_handle_exception(server
,
1435 _nfs4_lookup_root(server
, fhandle
, info
),
1437 } while (exception
.retry
);
1442 * get the file handle for the "/" directory on the server
1444 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1445 struct nfs_fsinfo
*info
)
1449 status
= nfs4_lookup_root(server
, fhandle
, info
);
1451 status
= nfs4_server_capabilities(server
, fhandle
);
1453 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
1454 return nfs4_map_errors(status
);
1458 * Get locations and (maybe) other attributes of a referral.
1459 * Note that we'll actually follow the referral later when
1460 * we detect fsid mismatch in inode revalidation
1462 static int nfs4_get_referral(struct inode
*dir
, struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
1464 int status
= -ENOMEM
;
1465 struct page
*page
= NULL
;
1466 struct nfs4_fs_locations
*locations
= NULL
;
1468 page
= alloc_page(GFP_KERNEL
);
1471 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
1472 if (locations
== NULL
)
1475 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
1478 /* Make sure server returned a different fsid for the referral */
1479 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
1480 dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__
, name
->name
);
1485 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
1486 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
1488 fattr
->mode
= S_IFDIR
;
1489 memset(fhandle
, 0, sizeof(struct nfs_fh
));
1498 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1500 struct nfs4_getattr_arg args
= {
1502 .bitmask
= server
->attr_bitmask
,
1504 struct nfs4_getattr_res res
= {
1508 struct rpc_message msg
= {
1509 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
1514 nfs_fattr_init(fattr
);
1515 return rpc_call_sync(server
->client
, &msg
, 0);
1518 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1520 struct nfs4_exception exception
= { };
1523 err
= nfs4_handle_exception(server
,
1524 _nfs4_proc_getattr(server
, fhandle
, fattr
),
1526 } while (exception
.retry
);
1531 * The file is not closed if it is opened due to the a request to change
1532 * the size of the file. The open call will not be needed once the
1533 * VFS layer lookup-intents are implemented.
1535 * Close is called when the inode is destroyed.
1536 * If we haven't opened the file for O_WRONLY, we
1537 * need to in the size_change case to obtain a stateid.
1540 * Because OPEN is always done by name in nfsv4, it is
1541 * possible that we opened a different file by the same
1542 * name. We can recognize this race condition, but we
1543 * can't do anything about it besides returning an error.
1545 * This will be fixed with VFS changes (lookup-intent).
1548 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
1549 struct iattr
*sattr
)
1551 struct rpc_cred
*cred
;
1552 struct inode
*inode
= dentry
->d_inode
;
1553 struct nfs_open_context
*ctx
;
1554 struct nfs4_state
*state
= NULL
;
1557 nfs_fattr_init(fattr
);
1559 cred
= rpcauth_lookupcred(NFS_CLIENT(inode
)->cl_auth
, 0);
1561 return PTR_ERR(cred
);
1563 /* Search for an existing open(O_WRITE) file */
1564 ctx
= nfs_find_open_context(inode
, cred
, FMODE_WRITE
);
1568 status
= nfs4_do_setattr(inode
, fattr
, sattr
, state
);
1570 nfs_setattr_update_inode(inode
, sattr
);
1572 put_nfs_open_context(ctx
);
1577 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1578 struct qstr
*name
, struct nfs_fh
*fhandle
,
1579 struct nfs_fattr
*fattr
)
1582 struct nfs4_lookup_arg args
= {
1583 .bitmask
= server
->attr_bitmask
,
1587 struct nfs4_lookup_res res
= {
1592 struct rpc_message msg
= {
1593 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1598 nfs_fattr_init(fattr
);
1600 dprintk("NFS call lookupfh %s\n", name
->name
);
1601 status
= rpc_call_sync(server
->client
, &msg
, 0);
1602 dprintk("NFS reply lookupfh: %d\n", status
);
1606 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1607 struct qstr
*name
, struct nfs_fh
*fhandle
,
1608 struct nfs_fattr
*fattr
)
1610 struct nfs4_exception exception
= { };
1613 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
1615 if (err
== -NFS4ERR_MOVED
) {
1619 err
= nfs4_handle_exception(server
, err
, &exception
);
1620 } while (exception
.retry
);
1624 static int _nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
1625 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1629 dprintk("NFS call lookup %s\n", name
->name
);
1630 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
1631 if (status
== -NFS4ERR_MOVED
)
1632 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
1633 dprintk("NFS reply lookup: %d\n", status
);
1637 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1639 struct nfs4_exception exception
= { };
1642 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1643 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
1645 } while (exception
.retry
);
1649 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1651 struct nfs4_accessargs args
= {
1652 .fh
= NFS_FH(inode
),
1654 struct nfs4_accessres res
= { 0 };
1655 struct rpc_message msg
= {
1656 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
1659 .rpc_cred
= entry
->cred
,
1661 int mode
= entry
->mask
;
1665 * Determine which access bits we want to ask for...
1667 if (mode
& MAY_READ
)
1668 args
.access
|= NFS4_ACCESS_READ
;
1669 if (S_ISDIR(inode
->i_mode
)) {
1670 if (mode
& MAY_WRITE
)
1671 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
1672 if (mode
& MAY_EXEC
)
1673 args
.access
|= NFS4_ACCESS_LOOKUP
;
1675 if (mode
& MAY_WRITE
)
1676 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
1677 if (mode
& MAY_EXEC
)
1678 args
.access
|= NFS4_ACCESS_EXECUTE
;
1680 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1683 if (res
.access
& NFS4_ACCESS_READ
)
1684 entry
->mask
|= MAY_READ
;
1685 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
1686 entry
->mask
|= MAY_WRITE
;
1687 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
1688 entry
->mask
|= MAY_EXEC
;
1693 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1695 struct nfs4_exception exception
= { };
1698 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1699 _nfs4_proc_access(inode
, entry
),
1701 } while (exception
.retry
);
1706 * TODO: For the time being, we don't try to get any attributes
1707 * along with any of the zero-copy operations READ, READDIR,
1710 * In the case of the first three, we want to put the GETATTR
1711 * after the read-type operation -- this is because it is hard
1712 * to predict the length of a GETATTR response in v4, and thus
1713 * align the READ data correctly. This means that the GETATTR
1714 * may end up partially falling into the page cache, and we should
1715 * shift it into the 'tail' of the xdr_buf before processing.
1716 * To do this efficiently, we need to know the total length
1717 * of data received, which doesn't seem to be available outside
1720 * In the case of WRITE, we also want to put the GETATTR after
1721 * the operation -- in this case because we want to make sure
1722 * we get the post-operation mtime and size. This means that
1723 * we can't use xdr_encode_pages() as written: we need a variant
1724 * of it which would leave room in the 'tail' iovec.
1726 * Both of these changes to the XDR layer would in fact be quite
1727 * minor, but I decided to leave them for a subsequent patch.
1729 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1730 unsigned int pgbase
, unsigned int pglen
)
1732 struct nfs4_readlink args
= {
1733 .fh
= NFS_FH(inode
),
1738 struct rpc_message msg
= {
1739 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
1744 return rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1747 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1748 unsigned int pgbase
, unsigned int pglen
)
1750 struct nfs4_exception exception
= { };
1753 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1754 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
1756 } while (exception
.retry
);
1762 * We will need to arrange for the VFS layer to provide an atomic open.
1763 * Until then, this create/open method is prone to inefficiency and race
1764 * conditions due to the lookup, create, and open VFS calls from sys_open()
1765 * placed on the wire.
1767 * Given the above sorry state of affairs, I'm simply sending an OPEN.
1768 * The file will be opened again in the subsequent VFS open call
1769 * (nfs4_proc_file_open).
1771 * The open for read will just hang around to be used by any process that
1772 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
1776 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
1777 int flags
, struct nameidata
*nd
)
1779 struct path path
= {
1783 struct nfs4_state
*state
;
1784 struct rpc_cred
*cred
;
1787 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1789 status
= PTR_ERR(cred
);
1792 state
= nfs4_do_open(dir
, &path
, flags
, sattr
, cred
);
1794 if (IS_ERR(state
)) {
1795 status
= PTR_ERR(state
);
1798 d_instantiate(dentry
, igrab(state
->inode
));
1799 if (flags
& O_EXCL
) {
1800 struct nfs_fattr fattr
;
1801 status
= nfs4_do_setattr(state
->inode
, &fattr
, sattr
, state
);
1803 nfs_setattr_update_inode(state
->inode
, sattr
);
1804 nfs_post_op_update_inode(state
->inode
, &fattr
);
1806 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
1807 status
= nfs4_intent_set_file(nd
, &path
, state
);
1809 nfs4_close_state(&path
, state
, flags
);
1814 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1816 struct nfs_server
*server
= NFS_SERVER(dir
);
1817 struct nfs4_remove_arg args
= {
1820 .bitmask
= server
->attr_bitmask
,
1822 struct nfs_fattr dir_attr
;
1823 struct nfs4_remove_res res
= {
1825 .dir_attr
= &dir_attr
,
1827 struct rpc_message msg
= {
1828 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
1834 nfs_fattr_init(res
.dir_attr
);
1835 status
= rpc_call_sync(server
->client
, &msg
, 0);
1837 update_changeattr(dir
, &res
.cinfo
);
1838 nfs_post_op_update_inode(dir
, res
.dir_attr
);
1843 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1845 struct nfs4_exception exception
= { };
1848 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1849 _nfs4_proc_remove(dir
, name
),
1851 } while (exception
.retry
);
1855 struct unlink_desc
{
1856 struct nfs4_remove_arg args
;
1857 struct nfs4_remove_res res
;
1858 struct nfs_fattr dir_attr
;
1861 static int nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct dentry
*dir
,
1864 struct nfs_server
*server
= NFS_SERVER(dir
->d_inode
);
1865 struct unlink_desc
*up
;
1867 up
= kmalloc(sizeof(*up
), GFP_KERNEL
);
1871 up
->args
.fh
= NFS_FH(dir
->d_inode
);
1872 up
->args
.name
= name
;
1873 up
->args
.bitmask
= server
->attr_bitmask
;
1874 up
->res
.server
= server
;
1875 up
->res
.dir_attr
= &up
->dir_attr
;
1877 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
1878 msg
->rpc_argp
= &up
->args
;
1879 msg
->rpc_resp
= &up
->res
;
1883 static int nfs4_proc_unlink_done(struct dentry
*dir
, struct rpc_task
*task
)
1885 struct rpc_message
*msg
= &task
->tk_msg
;
1886 struct unlink_desc
*up
;
1888 if (msg
->rpc_resp
!= NULL
) {
1889 up
= container_of(msg
->rpc_resp
, struct unlink_desc
, res
);
1890 update_changeattr(dir
->d_inode
, &up
->res
.cinfo
);
1891 nfs_post_op_update_inode(dir
->d_inode
, up
->res
.dir_attr
);
1893 msg
->rpc_resp
= NULL
;
1894 msg
->rpc_argp
= NULL
;
1899 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1900 struct inode
*new_dir
, struct qstr
*new_name
)
1902 struct nfs_server
*server
= NFS_SERVER(old_dir
);
1903 struct nfs4_rename_arg arg
= {
1904 .old_dir
= NFS_FH(old_dir
),
1905 .new_dir
= NFS_FH(new_dir
),
1906 .old_name
= old_name
,
1907 .new_name
= new_name
,
1908 .bitmask
= server
->attr_bitmask
,
1910 struct nfs_fattr old_fattr
, new_fattr
;
1911 struct nfs4_rename_res res
= {
1913 .old_fattr
= &old_fattr
,
1914 .new_fattr
= &new_fattr
,
1916 struct rpc_message msg
= {
1917 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
1923 nfs_fattr_init(res
.old_fattr
);
1924 nfs_fattr_init(res
.new_fattr
);
1925 status
= rpc_call_sync(server
->client
, &msg
, 0);
1928 update_changeattr(old_dir
, &res
.old_cinfo
);
1929 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
1930 update_changeattr(new_dir
, &res
.new_cinfo
);
1931 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
1936 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1937 struct inode
*new_dir
, struct qstr
*new_name
)
1939 struct nfs4_exception exception
= { };
1942 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
1943 _nfs4_proc_rename(old_dir
, old_name
,
1946 } while (exception
.retry
);
1950 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
1952 struct nfs_server
*server
= NFS_SERVER(inode
);
1953 struct nfs4_link_arg arg
= {
1954 .fh
= NFS_FH(inode
),
1955 .dir_fh
= NFS_FH(dir
),
1957 .bitmask
= server
->attr_bitmask
,
1959 struct nfs_fattr fattr
, dir_attr
;
1960 struct nfs4_link_res res
= {
1963 .dir_attr
= &dir_attr
,
1965 struct rpc_message msg
= {
1966 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
1972 nfs_fattr_init(res
.fattr
);
1973 nfs_fattr_init(res
.dir_attr
);
1974 status
= rpc_call_sync(server
->client
, &msg
, 0);
1976 update_changeattr(dir
, &res
.cinfo
);
1977 nfs_post_op_update_inode(dir
, res
.dir_attr
);
1978 nfs_post_op_update_inode(inode
, res
.fattr
);
1984 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
1986 struct nfs4_exception exception
= { };
1989 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1990 _nfs4_proc_link(inode
, dir
, name
),
1992 } while (exception
.retry
);
1996 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
1997 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
1999 struct nfs_server
*server
= NFS_SERVER(dir
);
2000 struct nfs_fh fhandle
;
2001 struct nfs_fattr fattr
, dir_fattr
;
2002 struct nfs4_create_arg arg
= {
2003 .dir_fh
= NFS_FH(dir
),
2005 .name
= &dentry
->d_name
,
2008 .bitmask
= server
->attr_bitmask
,
2010 struct nfs4_create_res res
= {
2014 .dir_fattr
= &dir_fattr
,
2016 struct rpc_message msg
= {
2017 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
],
2023 if (len
> NFS4_MAXPATHLEN
)
2024 return -ENAMETOOLONG
;
2026 arg
.u
.symlink
.pages
= &page
;
2027 arg
.u
.symlink
.len
= len
;
2028 nfs_fattr_init(&fattr
);
2029 nfs_fattr_init(&dir_fattr
);
2031 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2033 update_changeattr(dir
, &res
.dir_cinfo
);
2034 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2035 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2040 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2041 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2043 struct nfs4_exception exception
= { };
2046 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2047 _nfs4_proc_symlink(dir
, dentry
, page
,
2050 } while (exception
.retry
);
2054 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2055 struct iattr
*sattr
)
2057 struct nfs_server
*server
= NFS_SERVER(dir
);
2058 struct nfs_fh fhandle
;
2059 struct nfs_fattr fattr
, dir_fattr
;
2060 struct nfs4_create_arg arg
= {
2061 .dir_fh
= NFS_FH(dir
),
2063 .name
= &dentry
->d_name
,
2066 .bitmask
= server
->attr_bitmask
,
2068 struct nfs4_create_res res
= {
2072 .dir_fattr
= &dir_fattr
,
2074 struct rpc_message msg
= {
2075 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2081 nfs_fattr_init(&fattr
);
2082 nfs_fattr_init(&dir_fattr
);
2084 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2086 update_changeattr(dir
, &res
.dir_cinfo
);
2087 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2088 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2093 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2094 struct iattr
*sattr
)
2096 struct nfs4_exception exception
= { };
2099 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2100 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2102 } while (exception
.retry
);
2106 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2107 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2109 struct inode
*dir
= dentry
->d_inode
;
2110 struct nfs4_readdir_arg args
= {
2115 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2117 struct nfs4_readdir_res res
;
2118 struct rpc_message msg
= {
2119 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2126 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__
,
2127 dentry
->d_parent
->d_name
.name
,
2128 dentry
->d_name
.name
,
2129 (unsigned long long)cookie
);
2130 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2131 res
.pgbase
= args
.pgbase
;
2132 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2134 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2135 dprintk("%s: returns %d\n", __FUNCTION__
, status
);
2139 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2140 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2142 struct nfs4_exception exception
= { };
2145 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2146 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2149 } while (exception
.retry
);
2153 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2154 struct iattr
*sattr
, dev_t rdev
)
2156 struct nfs_server
*server
= NFS_SERVER(dir
);
2158 struct nfs_fattr fattr
, dir_fattr
;
2159 struct nfs4_create_arg arg
= {
2160 .dir_fh
= NFS_FH(dir
),
2162 .name
= &dentry
->d_name
,
2164 .bitmask
= server
->attr_bitmask
,
2166 struct nfs4_create_res res
= {
2170 .dir_fattr
= &dir_fattr
,
2172 struct rpc_message msg
= {
2173 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2178 int mode
= sattr
->ia_mode
;
2180 nfs_fattr_init(&fattr
);
2181 nfs_fattr_init(&dir_fattr
);
2183 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2184 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2186 arg
.ftype
= NF4FIFO
;
2187 else if (S_ISBLK(mode
)) {
2189 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2190 arg
.u
.device
.specdata2
= MINOR(rdev
);
2192 else if (S_ISCHR(mode
)) {
2194 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2195 arg
.u
.device
.specdata2
= MINOR(rdev
);
2198 arg
.ftype
= NF4SOCK
;
2200 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2202 update_changeattr(dir
, &res
.dir_cinfo
);
2203 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2204 status
= nfs_instantiate(dentry
, &fh
, &fattr
);
2209 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2210 struct iattr
*sattr
, dev_t rdev
)
2212 struct nfs4_exception exception
= { };
2215 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2216 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2218 } while (exception
.retry
);
2222 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2223 struct nfs_fsstat
*fsstat
)
2225 struct nfs4_statfs_arg args
= {
2227 .bitmask
= server
->attr_bitmask
,
2229 struct rpc_message msg
= {
2230 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2235 nfs_fattr_init(fsstat
->fattr
);
2236 return rpc_call_sync(server
->client
, &msg
, 0);
2239 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2241 struct nfs4_exception exception
= { };
2244 err
= nfs4_handle_exception(server
,
2245 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2247 } while (exception
.retry
);
2251 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2252 struct nfs_fsinfo
*fsinfo
)
2254 struct nfs4_fsinfo_arg args
= {
2256 .bitmask
= server
->attr_bitmask
,
2258 struct rpc_message msg
= {
2259 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2264 return rpc_call_sync(server
->client
, &msg
, 0);
2267 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2269 struct nfs4_exception exception
= { };
2273 err
= nfs4_handle_exception(server
,
2274 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2276 } while (exception
.retry
);
2280 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2282 nfs_fattr_init(fsinfo
->fattr
);
2283 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2286 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2287 struct nfs_pathconf
*pathconf
)
2289 struct nfs4_pathconf_arg args
= {
2291 .bitmask
= server
->attr_bitmask
,
2293 struct rpc_message msg
= {
2294 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2296 .rpc_resp
= pathconf
,
2299 /* None of the pathconf attributes are mandatory to implement */
2300 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2301 memset(pathconf
, 0, sizeof(*pathconf
));
2305 nfs_fattr_init(pathconf
->fattr
);
2306 return rpc_call_sync(server
->client
, &msg
, 0);
2309 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2310 struct nfs_pathconf
*pathconf
)
2312 struct nfs4_exception exception
= { };
2316 err
= nfs4_handle_exception(server
,
2317 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2319 } while (exception
.retry
);
2323 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2325 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2327 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
2328 rpc_restart_call(task
);
2331 if (task
->tk_status
> 0)
2332 renew_lease(server
, data
->timestamp
);
2336 static void nfs4_proc_read_setup(struct nfs_read_data
*data
)
2338 struct rpc_message msg
= {
2339 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
],
2340 .rpc_argp
= &data
->args
,
2341 .rpc_resp
= &data
->res
,
2342 .rpc_cred
= data
->cred
,
2345 data
->timestamp
= jiffies
;
2347 rpc_call_setup(&data
->task
, &msg
, 0);
2350 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2352 struct inode
*inode
= data
->inode
;
2354 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2355 rpc_restart_call(task
);
2358 if (task
->tk_status
>= 0) {
2359 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2360 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2365 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, int how
)
2367 struct rpc_message msg
= {
2368 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
],
2369 .rpc_argp
= &data
->args
,
2370 .rpc_resp
= &data
->res
,
2371 .rpc_cred
= data
->cred
,
2373 struct inode
*inode
= data
->inode
;
2374 struct nfs_server
*server
= NFS_SERVER(inode
);
2377 if (how
& FLUSH_STABLE
) {
2378 if (!NFS_I(inode
)->ncommit
)
2379 stable
= NFS_FILE_SYNC
;
2381 stable
= NFS_DATA_SYNC
;
2383 stable
= NFS_UNSTABLE
;
2384 data
->args
.stable
= stable
;
2385 data
->args
.bitmask
= server
->attr_bitmask
;
2386 data
->res
.server
= server
;
2388 data
->timestamp
= jiffies
;
2390 /* Finalize the task. */
2391 rpc_call_setup(&data
->task
, &msg
, 0);
2394 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2396 struct inode
*inode
= data
->inode
;
2398 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2399 rpc_restart_call(task
);
2402 if (task
->tk_status
>= 0)
2403 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2407 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, int how
)
2409 struct rpc_message msg
= {
2410 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
],
2411 .rpc_argp
= &data
->args
,
2412 .rpc_resp
= &data
->res
,
2413 .rpc_cred
= data
->cred
,
2415 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2417 data
->args
.bitmask
= server
->attr_bitmask
;
2418 data
->res
.server
= server
;
2420 rpc_call_setup(&data
->task
, &msg
, 0);
2424 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
2425 * standalone procedure for queueing an asynchronous RENEW.
2427 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
2429 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
2430 unsigned long timestamp
= (unsigned long)data
;
2432 if (task
->tk_status
< 0) {
2433 switch (task
->tk_status
) {
2434 case -NFS4ERR_STALE_CLIENTID
:
2435 case -NFS4ERR_EXPIRED
:
2436 case -NFS4ERR_CB_PATH_DOWN
:
2437 nfs4_schedule_state_recovery(clp
);
2441 spin_lock(&clp
->cl_lock
);
2442 if (time_before(clp
->cl_last_renewal
,timestamp
))
2443 clp
->cl_last_renewal
= timestamp
;
2444 spin_unlock(&clp
->cl_lock
);
2447 static const struct rpc_call_ops nfs4_renew_ops
= {
2448 .rpc_call_done
= nfs4_renew_done
,
2451 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2453 struct rpc_message msg
= {
2454 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2459 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
2460 &nfs4_renew_ops
, (void *)jiffies
);
2463 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2465 struct rpc_message msg
= {
2466 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2470 unsigned long now
= jiffies
;
2473 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2476 spin_lock(&clp
->cl_lock
);
2477 if (time_before(clp
->cl_last_renewal
,now
))
2478 clp
->cl_last_renewal
= now
;
2479 spin_unlock(&clp
->cl_lock
);
2483 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
2485 return (server
->caps
& NFS_CAP_ACLS
)
2486 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2487 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
2490 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
2491 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
2494 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
2496 static void buf_to_pages(const void *buf
, size_t buflen
,
2497 struct page
**pages
, unsigned int *pgbase
)
2499 const void *p
= buf
;
2501 *pgbase
= offset_in_page(buf
);
2503 while (p
< buf
+ buflen
) {
2504 *(pages
++) = virt_to_page(p
);
2505 p
+= PAGE_CACHE_SIZE
;
2509 struct nfs4_cached_acl
{
2515 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
2517 struct nfs_inode
*nfsi
= NFS_I(inode
);
2519 spin_lock(&inode
->i_lock
);
2520 kfree(nfsi
->nfs4_acl
);
2521 nfsi
->nfs4_acl
= acl
;
2522 spin_unlock(&inode
->i_lock
);
2525 static void nfs4_zap_acl_attr(struct inode
*inode
)
2527 nfs4_set_cached_acl(inode
, NULL
);
2530 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
2532 struct nfs_inode
*nfsi
= NFS_I(inode
);
2533 struct nfs4_cached_acl
*acl
;
2536 spin_lock(&inode
->i_lock
);
2537 acl
= nfsi
->nfs4_acl
;
2540 if (buf
== NULL
) /* user is just asking for length */
2542 if (acl
->cached
== 0)
2544 ret
= -ERANGE
; /* see getxattr(2) man page */
2545 if (acl
->len
> buflen
)
2547 memcpy(buf
, acl
->data
, acl
->len
);
2551 spin_unlock(&inode
->i_lock
);
2555 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
2557 struct nfs4_cached_acl
*acl
;
2559 if (buf
&& acl_len
<= PAGE_SIZE
) {
2560 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
2564 memcpy(acl
->data
, buf
, acl_len
);
2566 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
2573 nfs4_set_cached_acl(inode
, acl
);
2576 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2578 struct page
*pages
[NFS4ACL_MAXPAGES
];
2579 struct nfs_getaclargs args
= {
2580 .fh
= NFS_FH(inode
),
2584 size_t resp_len
= buflen
;
2586 struct rpc_message msg
= {
2587 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
2589 .rpc_resp
= &resp_len
,
2591 struct page
*localpage
= NULL
;
2594 if (buflen
< PAGE_SIZE
) {
2595 /* As long as we're doing a round trip to the server anyway,
2596 * let's be prepared for a page of acl data. */
2597 localpage
= alloc_page(GFP_KERNEL
);
2598 resp_buf
= page_address(localpage
);
2599 if (localpage
== NULL
)
2601 args
.acl_pages
[0] = localpage
;
2602 args
.acl_pgbase
= 0;
2603 resp_len
= args
.acl_len
= PAGE_SIZE
;
2606 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
2608 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2611 if (resp_len
> args
.acl_len
)
2612 nfs4_write_cached_acl(inode
, NULL
, resp_len
);
2614 nfs4_write_cached_acl(inode
, resp_buf
, resp_len
);
2617 if (resp_len
> buflen
)
2620 memcpy(buf
, resp_buf
, resp_len
);
2625 __free_page(localpage
);
2629 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2631 struct nfs4_exception exception
= { };
2634 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
2637 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
2638 } while (exception
.retry
);
2642 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
2644 struct nfs_server
*server
= NFS_SERVER(inode
);
2647 if (!nfs4_server_supports_acls(server
))
2649 ret
= nfs_revalidate_inode(server
, inode
);
2652 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
2655 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
2658 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2660 struct nfs_server
*server
= NFS_SERVER(inode
);
2661 struct page
*pages
[NFS4ACL_MAXPAGES
];
2662 struct nfs_setaclargs arg
= {
2663 .fh
= NFS_FH(inode
),
2667 struct rpc_message msg
= {
2668 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
2674 if (!nfs4_server_supports_acls(server
))
2676 nfs_inode_return_delegation(inode
);
2677 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
2678 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2679 nfs_zap_caches(inode
);
2683 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2685 struct nfs4_exception exception
= { };
2688 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2689 __nfs4_proc_set_acl(inode
, buf
, buflen
),
2691 } while (exception
.retry
);
2696 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
)
2698 struct nfs_client
*clp
= server
->nfs_client
;
2700 if (!clp
|| task
->tk_status
>= 0)
2702 switch(task
->tk_status
) {
2703 case -NFS4ERR_STALE_CLIENTID
:
2704 case -NFS4ERR_STALE_STATEID
:
2705 case -NFS4ERR_EXPIRED
:
2706 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
, NULL
);
2707 nfs4_schedule_state_recovery(clp
);
2708 if (test_bit(NFS4CLNT_STATE_RECOVER
, &clp
->cl_state
) == 0)
2709 rpc_wake_up_task(task
);
2710 task
->tk_status
= 0;
2712 case -NFS4ERR_DELAY
:
2713 nfs_inc_server_stats((struct nfs_server
*) server
,
2715 case -NFS4ERR_GRACE
:
2716 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
2717 task
->tk_status
= 0;
2719 case -NFS4ERR_OLD_STATEID
:
2720 task
->tk_status
= 0;
2723 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
2727 static int nfs4_wait_bit_interruptible(void *word
)
2729 if (signal_pending(current
))
2730 return -ERESTARTSYS
;
2735 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
)
2742 rwsem_acquire(&clp
->cl_sem
.dep_map
, 0, 0, _RET_IP_
);
2744 rpc_clnt_sigmask(clnt
, &oldset
);
2745 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_STATE_RECOVER
,
2746 nfs4_wait_bit_interruptible
,
2747 TASK_INTERRUPTIBLE
);
2748 rpc_clnt_sigunmask(clnt
, &oldset
);
2750 rwsem_release(&clp
->cl_sem
.dep_map
, 1, _RET_IP_
);
2754 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
2762 *timeout
= NFS4_POLL_RETRY_MIN
;
2763 if (*timeout
> NFS4_POLL_RETRY_MAX
)
2764 *timeout
= NFS4_POLL_RETRY_MAX
;
2765 rpc_clnt_sigmask(clnt
, &oldset
);
2766 if (clnt
->cl_intr
) {
2767 schedule_timeout_interruptible(*timeout
);
2771 schedule_timeout_uninterruptible(*timeout
);
2772 rpc_clnt_sigunmask(clnt
, &oldset
);
2777 /* This is the error handling routine for processes that are allowed
2780 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
2782 struct nfs_client
*clp
= server
->nfs_client
;
2783 int ret
= errorcode
;
2785 exception
->retry
= 0;
2789 case -NFS4ERR_STALE_CLIENTID
:
2790 case -NFS4ERR_STALE_STATEID
:
2791 case -NFS4ERR_EXPIRED
:
2792 nfs4_schedule_state_recovery(clp
);
2793 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
2795 exception
->retry
= 1;
2797 case -NFS4ERR_FILE_OPEN
:
2798 case -NFS4ERR_GRACE
:
2799 case -NFS4ERR_DELAY
:
2800 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
2803 case -NFS4ERR_OLD_STATEID
:
2804 exception
->retry
= 1;
2806 /* We failed to handle the error */
2807 return nfs4_map_errors(ret
);
2810 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
2812 nfs4_verifier sc_verifier
;
2813 struct nfs4_setclientid setclientid
= {
2814 .sc_verifier
= &sc_verifier
,
2817 struct rpc_message msg
= {
2818 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
2819 .rpc_argp
= &setclientid
,
2827 p
= (__be32
*)sc_verifier
.data
;
2828 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
2829 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
2832 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
2833 sizeof(setclientid
.sc_name
), "%s/%u.%u.%u.%u %s %u",
2834 clp
->cl_ipaddr
, NIPQUAD(clp
->cl_addr
.sin_addr
),
2835 cred
->cr_ops
->cr_name
,
2836 clp
->cl_id_uniquifier
);
2837 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
2838 sizeof(setclientid
.sc_netid
), "tcp");
2839 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
2840 sizeof(setclientid
.sc_uaddr
), "%s.%d.%d",
2841 clp
->cl_ipaddr
, port
>> 8, port
& 255);
2843 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2844 if (status
!= -NFS4ERR_CLID_INUSE
)
2849 ssleep(clp
->cl_lease_time
+ 1);
2851 if (++clp
->cl_id_uniquifier
== 0)
2857 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2859 struct nfs_fsinfo fsinfo
;
2860 struct rpc_message msg
= {
2861 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
2863 .rpc_resp
= &fsinfo
,
2870 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2872 spin_lock(&clp
->cl_lock
);
2873 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
2874 clp
->cl_last_renewal
= now
;
2875 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
2876 spin_unlock(&clp
->cl_lock
);
2881 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2886 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
2890 case -NFS4ERR_RESOURCE
:
2891 /* The IBM lawyers misread another document! */
2892 case -NFS4ERR_DELAY
:
2893 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
2899 struct nfs4_delegreturndata
{
2900 struct nfs4_delegreturnargs args
;
2901 struct nfs4_delegreturnres res
;
2903 nfs4_stateid stateid
;
2904 struct rpc_cred
*cred
;
2905 unsigned long timestamp
;
2906 struct nfs_fattr fattr
;
2910 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *calldata
)
2912 struct nfs4_delegreturndata
*data
= calldata
;
2913 struct rpc_message msg
= {
2914 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
2915 .rpc_argp
= &data
->args
,
2916 .rpc_resp
= &data
->res
,
2917 .rpc_cred
= data
->cred
,
2919 nfs_fattr_init(data
->res
.fattr
);
2920 rpc_call_setup(task
, &msg
, 0);
2923 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
2925 struct nfs4_delegreturndata
*data
= calldata
;
2926 data
->rpc_status
= task
->tk_status
;
2927 if (data
->rpc_status
== 0)
2928 renew_lease(data
->res
.server
, data
->timestamp
);
2931 static void nfs4_delegreturn_release(void *calldata
)
2933 struct nfs4_delegreturndata
*data
= calldata
;
2935 put_rpccred(data
->cred
);
2939 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
2940 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
2941 .rpc_call_done
= nfs4_delegreturn_done
,
2942 .rpc_release
= nfs4_delegreturn_release
,
2945 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2947 struct nfs4_delegreturndata
*data
;
2948 struct nfs_server
*server
= NFS_SERVER(inode
);
2949 struct rpc_task
*task
;
2952 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
2955 data
->args
.fhandle
= &data
->fh
;
2956 data
->args
.stateid
= &data
->stateid
;
2957 data
->args
.bitmask
= server
->attr_bitmask
;
2958 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
2959 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
2960 data
->res
.fattr
= &data
->fattr
;
2961 data
->res
.server
= server
;
2962 data
->cred
= get_rpccred(cred
);
2963 data
->timestamp
= jiffies
;
2964 data
->rpc_status
= 0;
2966 task
= rpc_run_task(NFS_CLIENT(inode
), RPC_TASK_ASYNC
, &nfs4_delegreturn_ops
, data
);
2968 return PTR_ERR(task
);
2969 status
= nfs4_wait_for_completion_rpc_task(task
);
2971 status
= data
->rpc_status
;
2973 nfs_post_op_update_inode(inode
, &data
->fattr
);
2979 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2981 struct nfs_server
*server
= NFS_SERVER(inode
);
2982 struct nfs4_exception exception
= { };
2985 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
);
2987 case -NFS4ERR_STALE_STATEID
:
2988 case -NFS4ERR_EXPIRED
:
2992 err
= nfs4_handle_exception(server
, err
, &exception
);
2993 } while (exception
.retry
);
2997 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
2998 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3001 * sleep, with exponential backoff, and retry the LOCK operation.
3003 static unsigned long
3004 nfs4_set_lock_task_retry(unsigned long timeout
)
3006 schedule_timeout_interruptible(timeout
);
3008 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3009 return NFS4_LOCK_MAXTIMEOUT
;
3013 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3015 struct inode
*inode
= state
->inode
;
3016 struct nfs_server
*server
= NFS_SERVER(inode
);
3017 struct nfs_client
*clp
= server
->nfs_client
;
3018 struct nfs_lockt_args arg
= {
3019 .fh
= NFS_FH(inode
),
3022 struct nfs_lockt_res res
= {
3025 struct rpc_message msg
= {
3026 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3029 .rpc_cred
= state
->owner
->so_cred
,
3031 struct nfs4_lock_state
*lsp
;
3034 down_read(&clp
->cl_sem
);
3035 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3036 status
= nfs4_set_lock_state(state
, request
);
3039 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3040 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3041 status
= rpc_call_sync(server
->client
, &msg
, 0);
3044 request
->fl_type
= F_UNLCK
;
3046 case -NFS4ERR_DENIED
:
3049 request
->fl_ops
->fl_release_private(request
);
3051 up_read(&clp
->cl_sem
);
3055 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3057 struct nfs4_exception exception
= { };
3061 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3062 _nfs4_proc_getlk(state
, cmd
, request
),
3064 } while (exception
.retry
);
3068 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3071 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3073 res
= posix_lock_file_wait(file
, fl
);
3076 res
= flock_lock_file_wait(file
, fl
);
3084 struct nfs4_unlockdata
{
3085 struct nfs_locku_args arg
;
3086 struct nfs_locku_res res
;
3087 struct nfs4_lock_state
*lsp
;
3088 struct nfs_open_context
*ctx
;
3089 struct file_lock fl
;
3090 const struct nfs_server
*server
;
3091 unsigned long timestamp
;
3094 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3095 struct nfs_open_context
*ctx
,
3096 struct nfs4_lock_state
*lsp
,
3097 struct nfs_seqid
*seqid
)
3099 struct nfs4_unlockdata
*p
;
3100 struct inode
*inode
= lsp
->ls_state
->inode
;
3102 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
3105 p
->arg
.fh
= NFS_FH(inode
);
3107 p
->arg
.seqid
= seqid
;
3108 p
->arg
.stateid
= &lsp
->ls_stateid
;
3110 atomic_inc(&lsp
->ls_count
);
3111 /* Ensure we don't close file until we're done freeing locks! */
3112 p
->ctx
= get_nfs_open_context(ctx
);
3113 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3114 p
->server
= NFS_SERVER(inode
);
3118 static void nfs4_locku_release_calldata(void *data
)
3120 struct nfs4_unlockdata
*calldata
= data
;
3121 nfs_free_seqid(calldata
->arg
.seqid
);
3122 nfs4_put_lock_state(calldata
->lsp
);
3123 put_nfs_open_context(calldata
->ctx
);
3127 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3129 struct nfs4_unlockdata
*calldata
= data
;
3131 if (RPC_ASSASSINATED(task
))
3133 nfs_increment_lock_seqid(task
->tk_status
, calldata
->arg
.seqid
);
3134 switch (task
->tk_status
) {
3136 memcpy(calldata
->lsp
->ls_stateid
.data
,
3137 calldata
->res
.stateid
.data
,
3138 sizeof(calldata
->lsp
->ls_stateid
.data
));
3139 renew_lease(calldata
->server
, calldata
->timestamp
);
3141 case -NFS4ERR_STALE_STATEID
:
3142 case -NFS4ERR_EXPIRED
:
3145 if (nfs4_async_handle_error(task
, calldata
->server
) == -EAGAIN
)
3146 rpc_restart_call(task
);
3150 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3152 struct nfs4_unlockdata
*calldata
= data
;
3153 struct rpc_message msg
= {
3154 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3155 .rpc_argp
= &calldata
->arg
,
3156 .rpc_resp
= &calldata
->res
,
3157 .rpc_cred
= calldata
->lsp
->ls_state
->owner
->so_cred
,
3160 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3162 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3163 /* Note: exit _without_ running nfs4_locku_done */
3164 task
->tk_action
= NULL
;
3167 calldata
->timestamp
= jiffies
;
3168 rpc_call_setup(task
, &msg
, 0);
3171 static const struct rpc_call_ops nfs4_locku_ops
= {
3172 .rpc_call_prepare
= nfs4_locku_prepare
,
3173 .rpc_call_done
= nfs4_locku_done
,
3174 .rpc_release
= nfs4_locku_release_calldata
,
3177 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3178 struct nfs_open_context
*ctx
,
3179 struct nfs4_lock_state
*lsp
,
3180 struct nfs_seqid
*seqid
)
3182 struct nfs4_unlockdata
*data
;
3184 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3186 nfs_free_seqid(seqid
);
3187 return ERR_PTR(-ENOMEM
);
3190 return rpc_run_task(NFS_CLIENT(lsp
->ls_state
->inode
), RPC_TASK_ASYNC
, &nfs4_locku_ops
, data
);
3193 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3195 struct nfs_seqid
*seqid
;
3196 struct nfs4_lock_state
*lsp
;
3197 struct rpc_task
*task
;
3200 status
= nfs4_set_lock_state(state
, request
);
3201 /* Unlock _before_ we do the RPC call */
3202 request
->fl_flags
|= FL_EXISTS
;
3203 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
)
3207 /* Is this a delegated lock? */
3208 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3210 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3211 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3215 task
= nfs4_do_unlck(request
, request
->fl_file
->private_data
, lsp
, seqid
);
3216 status
= PTR_ERR(task
);
3219 status
= nfs4_wait_for_completion_rpc_task(task
);
3225 struct nfs4_lockdata
{
3226 struct nfs_lock_args arg
;
3227 struct nfs_lock_res res
;
3228 struct nfs4_lock_state
*lsp
;
3229 struct nfs_open_context
*ctx
;
3230 struct file_lock fl
;
3231 unsigned long timestamp
;
3236 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3237 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3239 struct nfs4_lockdata
*p
;
3240 struct inode
*inode
= lsp
->ls_state
->inode
;
3241 struct nfs_server
*server
= NFS_SERVER(inode
);
3243 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3247 p
->arg
.fh
= NFS_FH(inode
);
3249 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3250 if (p
->arg
.lock_seqid
== NULL
)
3252 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3253 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3254 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3256 atomic_inc(&lsp
->ls_count
);
3257 p
->ctx
= get_nfs_open_context(ctx
);
3258 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3265 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3267 struct nfs4_lockdata
*data
= calldata
;
3268 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3269 struct nfs4_state_owner
*sp
= state
->owner
;
3270 struct rpc_message msg
= {
3271 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3272 .rpc_argp
= &data
->arg
,
3273 .rpc_resp
= &data
->res
,
3274 .rpc_cred
= sp
->so_cred
,
3277 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3279 dprintk("%s: begin!\n", __FUNCTION__
);
3280 /* Do we need to do an open_to_lock_owner? */
3281 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3282 data
->arg
.open_seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
3283 if (data
->arg
.open_seqid
== NULL
) {
3284 data
->rpc_status
= -ENOMEM
;
3285 task
->tk_action
= NULL
;
3288 data
->arg
.open_stateid
= &state
->stateid
;
3289 data
->arg
.new_lock_owner
= 1;
3291 data
->timestamp
= jiffies
;
3292 rpc_call_setup(task
, &msg
, 0);
3294 dprintk("%s: done!, ret = %d\n", __FUNCTION__
, data
->rpc_status
);
3297 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3299 struct nfs4_lockdata
*data
= calldata
;
3301 dprintk("%s: begin!\n", __FUNCTION__
);
3303 data
->rpc_status
= task
->tk_status
;
3304 if (RPC_ASSASSINATED(task
))
3306 if (data
->arg
.new_lock_owner
!= 0) {
3307 nfs_increment_open_seqid(data
->rpc_status
, data
->arg
.open_seqid
);
3308 if (data
->rpc_status
== 0)
3309 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3313 if (data
->rpc_status
== 0) {
3314 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3315 sizeof(data
->lsp
->ls_stateid
.data
));
3316 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3317 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3319 nfs_increment_lock_seqid(data
->rpc_status
, data
->arg
.lock_seqid
);
3321 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, data
->rpc_status
);
3324 static void nfs4_lock_release(void *calldata
)
3326 struct nfs4_lockdata
*data
= calldata
;
3328 dprintk("%s: begin!\n", __FUNCTION__
);
3329 if (data
->arg
.open_seqid
!= NULL
)
3330 nfs_free_seqid(data
->arg
.open_seqid
);
3331 if (data
->cancelled
!= 0) {
3332 struct rpc_task
*task
;
3333 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3334 data
->arg
.lock_seqid
);
3337 dprintk("%s: cancelling lock!\n", __FUNCTION__
);
3339 nfs_free_seqid(data
->arg
.lock_seqid
);
3340 nfs4_put_lock_state(data
->lsp
);
3341 put_nfs_open_context(data
->ctx
);
3343 dprintk("%s: done!\n", __FUNCTION__
);
3346 static const struct rpc_call_ops nfs4_lock_ops
= {
3347 .rpc_call_prepare
= nfs4_lock_prepare
,
3348 .rpc_call_done
= nfs4_lock_done
,
3349 .rpc_release
= nfs4_lock_release
,
3352 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3354 struct nfs4_lockdata
*data
;
3355 struct rpc_task
*task
;
3358 dprintk("%s: begin!\n", __FUNCTION__
);
3359 data
= nfs4_alloc_lockdata(fl
, fl
->fl_file
->private_data
,
3360 fl
->fl_u
.nfs4_fl
.owner
);
3364 data
->arg
.block
= 1;
3366 data
->arg
.reclaim
= 1;
3367 task
= rpc_run_task(NFS_CLIENT(state
->inode
), RPC_TASK_ASYNC
,
3368 &nfs4_lock_ops
, data
);
3370 return PTR_ERR(task
);
3371 ret
= nfs4_wait_for_completion_rpc_task(task
);
3373 ret
= data
->rpc_status
;
3374 if (ret
== -NFS4ERR_DENIED
)
3377 data
->cancelled
= 1;
3379 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, ret
);
3383 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
3385 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3386 struct nfs4_exception exception
= { };
3390 /* Cache the lock if possible... */
3391 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3393 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
3394 if (err
!= -NFS4ERR_DELAY
)
3396 nfs4_handle_exception(server
, err
, &exception
);
3397 } while (exception
.retry
);
3401 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
3403 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3404 struct nfs4_exception exception
= { };
3407 err
= nfs4_set_lock_state(state
, request
);
3411 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3413 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
3414 if (err
!= -NFS4ERR_DELAY
)
3416 nfs4_handle_exception(server
, err
, &exception
);
3417 } while (exception
.retry
);
3421 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3423 struct nfs_client
*clp
= state
->owner
->so_client
;
3424 unsigned char fl_flags
= request
->fl_flags
;
3427 /* Is this a delegated open? */
3428 status
= nfs4_set_lock_state(state
, request
);
3431 request
->fl_flags
|= FL_ACCESS
;
3432 status
= do_vfs_lock(request
->fl_file
, request
);
3435 down_read(&clp
->cl_sem
);
3436 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3437 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3438 /* Yes: cache locks! */
3439 down_read(&nfsi
->rwsem
);
3440 /* ...but avoid races with delegation recall... */
3441 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3442 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
3443 status
= do_vfs_lock(request
->fl_file
, request
);
3444 up_read(&nfsi
->rwsem
);
3447 up_read(&nfsi
->rwsem
);
3449 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
3452 /* Note: we always want to sleep here! */
3453 request
->fl_flags
= fl_flags
| FL_SLEEP
;
3454 if (do_vfs_lock(request
->fl_file
, request
) < 0)
3455 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __FUNCTION__
);
3457 up_read(&clp
->cl_sem
);
3459 request
->fl_flags
= fl_flags
;
3463 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3465 struct nfs4_exception exception
= { };
3469 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3470 _nfs4_proc_setlk(state
, cmd
, request
),
3472 } while (exception
.retry
);
3477 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
3479 struct nfs_open_context
*ctx
;
3480 struct nfs4_state
*state
;
3481 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
3484 /* verify open state */
3485 ctx
= (struct nfs_open_context
*)filp
->private_data
;
3488 if (request
->fl_start
< 0 || request
->fl_end
< 0)
3492 return nfs4_proc_getlk(state
, F_GETLK
, request
);
3494 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
3497 if (request
->fl_type
== F_UNLCK
)
3498 return nfs4_proc_unlck(state
, cmd
, request
);
3501 status
= nfs4_proc_setlk(state
, cmd
, request
);
3502 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
3504 timeout
= nfs4_set_lock_task_retry(timeout
);
3505 status
= -ERESTARTSYS
;
3508 } while(status
< 0);
3512 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
3514 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3515 struct nfs4_exception exception
= { };
3518 err
= nfs4_set_lock_state(state
, fl
);
3522 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
3523 if (err
!= -NFS4ERR_DELAY
)
3525 err
= nfs4_handle_exception(server
, err
, &exception
);
3526 } while (exception
.retry
);
3531 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
3533 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
3534 size_t buflen
, int flags
)
3536 struct inode
*inode
= dentry
->d_inode
;
3538 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3541 if (!S_ISREG(inode
->i_mode
) &&
3542 (!S_ISDIR(inode
->i_mode
) || inode
->i_mode
& S_ISVTX
))
3545 return nfs4_proc_set_acl(inode
, buf
, buflen
);
3548 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
3549 * and that's what we'll do for e.g. user attributes that haven't been set.
3550 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
3551 * attributes in kernel-managed attribute namespaces. */
3552 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
3555 struct inode
*inode
= dentry
->d_inode
;
3557 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3560 return nfs4_proc_get_acl(inode
, buf
, buflen
);
3563 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
3565 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
3567 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
3569 if (buf
&& buflen
< len
)
3572 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
3576 int nfs4_proc_fs_locations(struct inode
*dir
, struct qstr
*name
,
3577 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
3579 struct nfs_server
*server
= NFS_SERVER(dir
);
3581 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
3582 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
3584 struct nfs4_fs_locations_arg args
= {
3585 .dir_fh
= NFS_FH(dir
),
3590 struct rpc_message msg
= {
3591 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
3593 .rpc_resp
= fs_locations
,
3597 dprintk("%s: start\n", __FUNCTION__
);
3598 nfs_fattr_init(&fs_locations
->fattr
);
3599 fs_locations
->server
= server
;
3600 fs_locations
->nlocations
= 0;
3601 status
= rpc_call_sync(server
->client
, &msg
, 0);
3602 dprintk("%s: returned status = %d\n", __FUNCTION__
, status
);
3606 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops
= {
3607 .recover_open
= nfs4_open_reclaim
,
3608 .recover_lock
= nfs4_lock_reclaim
,
3611 struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops
= {
3612 .recover_open
= nfs4_open_expired
,
3613 .recover_lock
= nfs4_lock_expired
,
3616 static const struct inode_operations nfs4_file_inode_operations
= {
3617 .permission
= nfs_permission
,
3618 .getattr
= nfs_getattr
,
3619 .setattr
= nfs_setattr
,
3620 .getxattr
= nfs4_getxattr
,
3621 .setxattr
= nfs4_setxattr
,
3622 .listxattr
= nfs4_listxattr
,
3625 const struct nfs_rpc_ops nfs_v4_clientops
= {
3626 .version
= 4, /* protocol version */
3627 .dentry_ops
= &nfs4_dentry_operations
,
3628 .dir_inode_ops
= &nfs4_dir_inode_operations
,
3629 .file_inode_ops
= &nfs4_file_inode_operations
,
3630 .getroot
= nfs4_proc_get_root
,
3631 .getattr
= nfs4_proc_getattr
,
3632 .setattr
= nfs4_proc_setattr
,
3633 .lookupfh
= nfs4_proc_lookupfh
,
3634 .lookup
= nfs4_proc_lookup
,
3635 .access
= nfs4_proc_access
,
3636 .readlink
= nfs4_proc_readlink
,
3637 .create
= nfs4_proc_create
,
3638 .remove
= nfs4_proc_remove
,
3639 .unlink_setup
= nfs4_proc_unlink_setup
,
3640 .unlink_done
= nfs4_proc_unlink_done
,
3641 .rename
= nfs4_proc_rename
,
3642 .link
= nfs4_proc_link
,
3643 .symlink
= nfs4_proc_symlink
,
3644 .mkdir
= nfs4_proc_mkdir
,
3645 .rmdir
= nfs4_proc_remove
,
3646 .readdir
= nfs4_proc_readdir
,
3647 .mknod
= nfs4_proc_mknod
,
3648 .statfs
= nfs4_proc_statfs
,
3649 .fsinfo
= nfs4_proc_fsinfo
,
3650 .pathconf
= nfs4_proc_pathconf
,
3651 .set_capabilities
= nfs4_server_capabilities
,
3652 .decode_dirent
= nfs4_decode_dirent
,
3653 .read_setup
= nfs4_proc_read_setup
,
3654 .read_done
= nfs4_read_done
,
3655 .write_setup
= nfs4_proc_write_setup
,
3656 .write_done
= nfs4_write_done
,
3657 .commit_setup
= nfs4_proc_commit_setup
,
3658 .commit_done
= nfs4_commit_done
,
3659 .file_open
= nfs_open
,
3660 .file_release
= nfs_release
,
3661 .lock
= nfs4_proc_lock
,
3662 .clear_acl_cache
= nfs4_zap_acl_attr
,