4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/utsname.h>
40 #include <linux/delay.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/sunrpc/clnt.h>
44 #include <linux/nfs.h>
45 #include <linux/nfs4.h>
46 #include <linux/nfs_fs.h>
47 #include <linux/nfs_page.h>
48 #include <linux/smp_lock.h>
49 #include <linux/namei.h>
50 #include <linux/mount.h>
53 #include "delegation.h"
56 #define NFSDBG_FACILITY NFSDBG_PROC
58 #define NFS4_POLL_RETRY_MIN (HZ/10)
59 #define NFS4_POLL_RETRY_MAX (15*HZ)
62 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
63 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
64 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*);
65 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
);
66 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
);
67 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
);
69 /* Prevent leaks of NFSv4 errors into userland */
70 int nfs4_map_errors(int err
)
73 dprintk("%s could not handle NFSv4 error %d\n",
81 * This is our standard bitmap for GETATTR requests.
83 const u32 nfs4_fattr_bitmap
[2] = {
88 | FATTR4_WORD0_FILEID
,
90 | FATTR4_WORD1_NUMLINKS
92 | FATTR4_WORD1_OWNER_GROUP
94 | FATTR4_WORD1_SPACE_USED
95 | FATTR4_WORD1_TIME_ACCESS
96 | FATTR4_WORD1_TIME_METADATA
97 | FATTR4_WORD1_TIME_MODIFY
100 const u32 nfs4_statfs_bitmap
[2] = {
101 FATTR4_WORD0_FILES_AVAIL
102 | FATTR4_WORD0_FILES_FREE
103 | FATTR4_WORD0_FILES_TOTAL
,
104 FATTR4_WORD1_SPACE_AVAIL
105 | FATTR4_WORD1_SPACE_FREE
106 | FATTR4_WORD1_SPACE_TOTAL
109 const u32 nfs4_pathconf_bitmap
[2] = {
111 | FATTR4_WORD0_MAXNAME
,
115 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
116 | FATTR4_WORD0_MAXREAD
117 | FATTR4_WORD0_MAXWRITE
118 | FATTR4_WORD0_LEASE_TIME
,
122 const u32 nfs4_fs_locations_bitmap
[2] = {
124 | FATTR4_WORD0_CHANGE
127 | FATTR4_WORD0_FILEID
128 | FATTR4_WORD0_FS_LOCATIONS
,
130 | FATTR4_WORD1_NUMLINKS
132 | FATTR4_WORD1_OWNER_GROUP
133 | FATTR4_WORD1_RAWDEV
134 | FATTR4_WORD1_SPACE_USED
135 | FATTR4_WORD1_TIME_ACCESS
136 | FATTR4_WORD1_TIME_METADATA
137 | FATTR4_WORD1_TIME_MODIFY
138 | FATTR4_WORD1_MOUNTED_ON_FILEID
141 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
142 struct nfs4_readdir_arg
*readdir
)
146 BUG_ON(readdir
->count
< 80);
148 readdir
->cookie
= cookie
;
149 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
154 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
159 * NFSv4 servers do not return entries for '.' and '..'
160 * Therefore, we fake these entries here. We let '.'
161 * have cookie 0 and '..' have cookie 1. Note that
162 * when talking to the server, we always send cookie 0
165 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
168 *p
++ = xdr_one
; /* next */
169 *p
++ = xdr_zero
; /* cookie, first word */
170 *p
++ = xdr_one
; /* cookie, second word */
171 *p
++ = xdr_one
; /* entry len */
172 memcpy(p
, ".\0\0\0", 4); /* entry */
174 *p
++ = xdr_one
; /* bitmap length */
175 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
176 *p
++ = htonl(8); /* attribute buffer length */
177 p
= xdr_encode_hyper(p
, dentry
->d_inode
->i_ino
);
180 *p
++ = xdr_one
; /* next */
181 *p
++ = xdr_zero
; /* cookie, first word */
182 *p
++ = xdr_two
; /* cookie, second word */
183 *p
++ = xdr_two
; /* entry len */
184 memcpy(p
, "..\0\0", 4); /* entry */
186 *p
++ = xdr_one
; /* bitmap length */
187 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
188 *p
++ = htonl(8); /* attribute buffer length */
189 p
= xdr_encode_hyper(p
, dentry
->d_parent
->d_inode
->i_ino
);
191 readdir
->pgbase
= (char *)p
- (char *)start
;
192 readdir
->count
-= readdir
->pgbase
;
193 kunmap_atomic(start
, KM_USER0
);
196 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
198 struct nfs_client
*clp
= server
->nfs_client
;
199 spin_lock(&clp
->cl_lock
);
200 if (time_before(clp
->cl_last_renewal
,timestamp
))
201 clp
->cl_last_renewal
= timestamp
;
202 spin_unlock(&clp
->cl_lock
);
205 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
207 struct nfs_inode
*nfsi
= NFS_I(dir
);
209 spin_lock(&dir
->i_lock
);
210 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
211 if (cinfo
->before
== nfsi
->change_attr
&& cinfo
->atomic
)
212 nfsi
->change_attr
= cinfo
->after
;
213 spin_unlock(&dir
->i_lock
);
216 struct nfs4_opendata
{
218 struct nfs_openargs o_arg
;
219 struct nfs_openres o_res
;
220 struct nfs_open_confirmargs c_arg
;
221 struct nfs_open_confirmres c_res
;
222 struct nfs_fattr f_attr
;
223 struct nfs_fattr dir_attr
;
226 struct nfs4_state_owner
*owner
;
228 unsigned long timestamp
;
233 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
234 struct nfs4_state_owner
*sp
, int flags
,
235 const struct iattr
*attrs
)
237 struct dentry
*parent
= dget_parent(path
->dentry
);
238 struct inode
*dir
= parent
->d_inode
;
239 struct nfs_server
*server
= NFS_SERVER(dir
);
240 struct nfs4_opendata
*p
;
242 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
245 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
246 if (p
->o_arg
.seqid
== NULL
)
248 atomic_set(&p
->count
, 1);
249 p
->path
.mnt
= mntget(path
->mnt
);
250 p
->path
.dentry
= dget(path
->dentry
);
253 atomic_inc(&sp
->so_count
);
254 p
->o_arg
.fh
= NFS_FH(dir
);
255 p
->o_arg
.open_flags
= flags
,
256 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
257 p
->o_arg
.id
= sp
->so_id
;
258 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
259 p
->o_arg
.server
= server
;
260 p
->o_arg
.bitmask
= server
->attr_bitmask
;
261 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
262 p
->o_res
.f_attr
= &p
->f_attr
;
263 p
->o_res
.dir_attr
= &p
->dir_attr
;
264 p
->o_res
.server
= server
;
265 nfs_fattr_init(&p
->f_attr
);
266 nfs_fattr_init(&p
->dir_attr
);
267 if (flags
& O_EXCL
) {
268 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
271 } else if (flags
& O_CREAT
) {
272 p
->o_arg
.u
.attrs
= &p
->attrs
;
273 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
275 p
->c_arg
.fh
= &p
->o_res
.fh
;
276 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
277 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
286 static void nfs4_opendata_free(struct nfs4_opendata
*p
)
288 if (p
!= NULL
&& atomic_dec_and_test(&p
->count
)) {
289 nfs_free_seqid(p
->o_arg
.seqid
);
290 nfs4_put_state_owner(p
->owner
);
292 dput(p
->path
.dentry
);
298 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
303 rpc_clnt_sigmask(task
->tk_client
, &oldset
);
304 ret
= rpc_wait_for_completion_task(task
);
305 rpc_clnt_sigunmask(task
->tk_client
, &oldset
);
309 static inline void update_open_stateflags(struct nfs4_state
*state
, mode_t open_flags
)
311 switch (open_flags
) {
318 case FMODE_READ
|FMODE_WRITE
:
323 static void update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, int open_flags
)
325 struct inode
*inode
= state
->inode
;
327 open_flags
&= (FMODE_READ
|FMODE_WRITE
);
328 /* Protect against nfs4_find_state_byowner() */
329 spin_lock(&state
->owner
->so_lock
);
330 spin_lock(&inode
->i_lock
);
331 memcpy(&state
->stateid
, stateid
, sizeof(state
->stateid
));
332 update_open_stateflags(state
, open_flags
);
333 nfs4_state_set_mode_locked(state
, state
->state
| open_flags
);
334 spin_unlock(&inode
->i_lock
);
335 spin_unlock(&state
->owner
->so_lock
);
338 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
341 struct nfs4_state
*state
= NULL
;
343 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
345 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
348 state
= nfs4_get_open_state(inode
, data
->owner
);
351 update_open_stateid(state
, &data
->o_res
.stateid
, data
->o_arg
.open_flags
);
358 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
360 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
361 struct nfs_open_context
*ctx
;
363 spin_lock(&state
->inode
->i_lock
);
364 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
365 if (ctx
->state
!= state
)
367 get_nfs_open_context(ctx
);
368 spin_unlock(&state
->inode
->i_lock
);
371 spin_unlock(&state
->inode
->i_lock
);
372 return ERR_PTR(-ENOENT
);
375 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, mode_t openflags
, nfs4_stateid
*stateid
)
379 opendata
->o_arg
.open_flags
= openflags
;
380 ret
= _nfs4_proc_open(opendata
);
383 memcpy(stateid
->data
, opendata
->o_res
.stateid
.data
,
384 sizeof(stateid
->data
));
388 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
390 nfs4_stateid stateid
;
391 struct nfs4_state
*newstate
;
396 /* memory barrier prior to reading state->n_* */
398 if (state
->n_rdwr
!= 0) {
399 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &stateid
);
402 mode
|= FMODE_READ
|FMODE_WRITE
;
403 if (opendata
->o_res
.delegation_type
!= 0)
404 delegation
= opendata
->o_res
.delegation_type
;
407 if (state
->n_wronly
!= 0) {
408 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &stateid
);
412 if (opendata
->o_res
.delegation_type
!= 0)
413 delegation
= opendata
->o_res
.delegation_type
;
416 if (state
->n_rdonly
!= 0) {
417 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &stateid
);
422 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
425 if (opendata
->o_res
.delegation_type
== 0)
426 opendata
->o_res
.delegation_type
= delegation
;
427 opendata
->o_arg
.open_flags
|= mode
;
428 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
429 if (newstate
!= NULL
) {
430 if (opendata
->o_res
.delegation_type
!= 0) {
431 struct nfs_inode
*nfsi
= NFS_I(newstate
->inode
);
432 int delegation_flags
= 0;
433 if (nfsi
->delegation
)
434 delegation_flags
= nfsi
->delegation
->flags
;
435 if (!(delegation_flags
& NFS_DELEGATION_NEED_RECLAIM
))
436 nfs_inode_set_delegation(newstate
->inode
,
437 opendata
->owner
->so_cred
,
440 nfs_inode_reclaim_delegation(newstate
->inode
,
441 opendata
->owner
->so_cred
,
444 nfs4_close_state(&opendata
->path
, newstate
, opendata
->o_arg
.open_flags
);
446 if (newstate
!= state
)
453 * reclaim state on the server after a reboot.
455 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
457 struct nfs_delegation
*delegation
= NFS_I(state
->inode
)->delegation
;
458 struct nfs4_opendata
*opendata
;
459 int delegation_type
= 0;
462 if (delegation
!= NULL
) {
463 if (!(delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)) {
464 memcpy(&state
->stateid
, &delegation
->stateid
,
465 sizeof(state
->stateid
));
466 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
469 delegation_type
= delegation
->type
;
471 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, NULL
);
472 if (opendata
== NULL
)
474 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
475 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
476 nfs_copy_fh(&opendata
->o_res
.fh
, opendata
->o_arg
.fh
);
477 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
478 status
= nfs4_open_recover(opendata
, state
);
479 nfs4_opendata_free(opendata
);
483 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
485 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
486 struct nfs4_exception exception
= { };
489 err
= _nfs4_do_open_reclaim(ctx
, state
);
490 if (err
!= -NFS4ERR_DELAY
)
492 nfs4_handle_exception(server
, err
, &exception
);
493 } while (exception
.retry
);
497 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
499 struct nfs_open_context
*ctx
;
502 ctx
= nfs4_state_find_open_context(state
);
505 ret
= nfs4_do_open_reclaim(ctx
, state
);
506 put_nfs_open_context(ctx
);
510 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
512 struct nfs4_state_owner
*sp
= state
->owner
;
513 struct nfs4_opendata
*opendata
;
516 if (!test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
518 opendata
= nfs4_opendata_alloc(&ctx
->path
, sp
, 0, NULL
);
519 if (opendata
== NULL
)
521 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
522 memcpy(opendata
->o_arg
.u
.delegation
.data
, state
->stateid
.data
,
523 sizeof(opendata
->o_arg
.u
.delegation
.data
));
524 ret
= nfs4_open_recover(opendata
, state
);
525 nfs4_opendata_free(opendata
);
529 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
531 struct nfs4_exception exception
= { };
532 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
535 err
= _nfs4_open_delegation_recall(ctx
, state
);
539 case -NFS4ERR_STALE_CLIENTID
:
540 case -NFS4ERR_STALE_STATEID
:
541 case -NFS4ERR_EXPIRED
:
542 /* Don't recall a delegation if it was lost */
543 nfs4_schedule_state_recovery(server
->nfs_client
);
546 err
= nfs4_handle_exception(server
, err
, &exception
);
547 } while (exception
.retry
);
551 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
553 struct nfs4_opendata
*data
= calldata
;
554 struct rpc_message msg
= {
555 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
556 .rpc_argp
= &data
->c_arg
,
557 .rpc_resp
= &data
->c_res
,
558 .rpc_cred
= data
->owner
->so_cred
,
560 data
->timestamp
= jiffies
;
561 rpc_call_setup(task
, &msg
, 0);
564 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
566 struct nfs4_opendata
*data
= calldata
;
568 data
->rpc_status
= task
->tk_status
;
569 if (RPC_ASSASSINATED(task
))
571 if (data
->rpc_status
== 0) {
572 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
573 sizeof(data
->o_res
.stateid
.data
));
574 renew_lease(data
->o_res
.server
, data
->timestamp
);
576 nfs_increment_open_seqid(data
->rpc_status
, data
->c_arg
.seqid
);
577 nfs_confirm_seqid(&data
->owner
->so_seqid
, data
->rpc_status
);
580 static void nfs4_open_confirm_release(void *calldata
)
582 struct nfs4_opendata
*data
= calldata
;
583 struct nfs4_state
*state
= NULL
;
585 /* If this request hasn't been cancelled, do nothing */
586 if (data
->cancelled
== 0)
588 /* In case of error, no cleanup! */
589 if (data
->rpc_status
!= 0)
591 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
592 state
= nfs4_opendata_to_nfs4_state(data
);
594 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
596 nfs4_opendata_free(data
);
599 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
600 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
601 .rpc_call_done
= nfs4_open_confirm_done
,
602 .rpc_release
= nfs4_open_confirm_release
,
606 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
608 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
610 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
611 struct rpc_task
*task
;
614 atomic_inc(&data
->count
);
616 * If rpc_run_task() ends up calling ->rpc_release(), we
617 * want to ensure that it takes the 'error' code path.
619 data
->rpc_status
= -ENOMEM
;
620 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_confirm_ops
, data
);
622 return PTR_ERR(task
);
623 status
= nfs4_wait_for_completion_rpc_task(task
);
628 status
= data
->rpc_status
;
633 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
635 struct nfs4_opendata
*data
= calldata
;
636 struct nfs4_state_owner
*sp
= data
->owner
;
637 struct rpc_message msg
= {
638 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
639 .rpc_argp
= &data
->o_arg
,
640 .rpc_resp
= &data
->o_res
,
641 .rpc_cred
= sp
->so_cred
,
644 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
646 /* Update sequence id. */
647 data
->o_arg
.id
= sp
->so_id
;
648 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
649 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
650 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
651 data
->timestamp
= jiffies
;
652 rpc_call_setup(task
, &msg
, 0);
655 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
657 struct nfs4_opendata
*data
= calldata
;
659 data
->rpc_status
= task
->tk_status
;
660 if (RPC_ASSASSINATED(task
))
662 if (task
->tk_status
== 0) {
663 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
667 data
->rpc_status
= -ELOOP
;
670 data
->rpc_status
= -EISDIR
;
673 data
->rpc_status
= -ENOTDIR
;
675 renew_lease(data
->o_res
.server
, data
->timestamp
);
677 nfs_increment_open_seqid(data
->rpc_status
, data
->o_arg
.seqid
);
680 static void nfs4_open_release(void *calldata
)
682 struct nfs4_opendata
*data
= calldata
;
683 struct nfs4_state
*state
= NULL
;
685 /* If this request hasn't been cancelled, do nothing */
686 if (data
->cancelled
== 0)
688 /* In case of error, no cleanup! */
689 if (data
->rpc_status
!= 0)
691 /* In case we need an open_confirm, no cleanup! */
692 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
694 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
695 state
= nfs4_opendata_to_nfs4_state(data
);
697 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
699 nfs4_opendata_free(data
);
702 static const struct rpc_call_ops nfs4_open_ops
= {
703 .rpc_call_prepare
= nfs4_open_prepare
,
704 .rpc_call_done
= nfs4_open_done
,
705 .rpc_release
= nfs4_open_release
,
709 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
711 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
713 struct inode
*dir
= data
->dir
->d_inode
;
714 struct nfs_server
*server
= NFS_SERVER(dir
);
715 struct nfs_openargs
*o_arg
= &data
->o_arg
;
716 struct nfs_openres
*o_res
= &data
->o_res
;
717 struct rpc_task
*task
;
720 atomic_inc(&data
->count
);
722 * If rpc_run_task() ends up calling ->rpc_release(), we
723 * want to ensure that it takes the 'error' code path.
725 data
->rpc_status
= -ENOMEM
;
726 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_ops
, data
);
728 return PTR_ERR(task
);
729 status
= nfs4_wait_for_completion_rpc_task(task
);
734 status
= data
->rpc_status
;
739 if (o_arg
->open_flags
& O_CREAT
) {
740 update_changeattr(dir
, &o_res
->cinfo
);
741 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
743 nfs_refresh_inode(dir
, o_res
->dir_attr
);
744 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
745 status
= _nfs4_proc_open_confirm(data
);
749 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
750 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
751 return server
->nfs_client
->rpc_ops
->getattr(server
, &o_res
->fh
, o_res
->f_attr
);
755 static int _nfs4_do_access(struct inode
*inode
, struct rpc_cred
*cred
, int openflags
)
757 struct nfs_access_entry cache
;
761 if (openflags
& FMODE_READ
)
763 if (openflags
& FMODE_WRITE
)
765 status
= nfs_access_get_cached(inode
, cred
, &cache
);
769 /* Be clever: ask server to check for all possible rights */
770 cache
.mask
= MAY_EXEC
| MAY_WRITE
| MAY_READ
;
772 cache
.jiffies
= jiffies
;
773 status
= _nfs4_proc_access(inode
, &cache
);
776 nfs_access_add_cache(inode
, &cache
);
778 if ((cache
.mask
& mask
) == mask
)
783 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
785 struct nfs_client
*clp
= server
->nfs_client
;
789 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
792 if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
))
794 nfs4_schedule_state_recovery(clp
);
801 * reclaim state on the server after a network partition.
802 * Assumes caller holds the appropriate lock
804 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
806 struct inode
*inode
= state
->inode
;
807 struct nfs_delegation
*delegation
= NFS_I(inode
)->delegation
;
808 struct nfs4_opendata
*opendata
;
809 int openflags
= state
->state
& (FMODE_READ
|FMODE_WRITE
);
812 if (delegation
!= NULL
&& !(delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)) {
813 ret
= _nfs4_do_access(inode
, ctx
->cred
, openflags
);
816 memcpy(&state
->stateid
, &delegation
->stateid
, sizeof(state
->stateid
));
817 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
820 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, openflags
, NULL
);
821 if (opendata
== NULL
)
823 ret
= nfs4_open_recover(opendata
, state
);
824 if (ret
== -ESTALE
) {
825 /* Invalidate the state owner so we don't ever use it again */
826 nfs4_drop_state_owner(state
->owner
);
827 d_drop(ctx
->path
.dentry
);
829 nfs4_opendata_free(opendata
);
833 static inline int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
835 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
836 struct nfs4_exception exception
= { };
840 err
= _nfs4_open_expired(ctx
, state
);
841 if (err
== -NFS4ERR_DELAY
)
842 nfs4_handle_exception(server
, err
, &exception
);
843 } while (exception
.retry
);
847 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
849 struct nfs_open_context
*ctx
;
852 ctx
= nfs4_state_find_open_context(state
);
855 ret
= nfs4_do_open_expired(ctx
, state
);
856 put_nfs_open_context(ctx
);
861 * Returns a referenced nfs4_state if there is an open delegation on the file
863 static int _nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
865 struct nfs_delegation
*delegation
;
866 struct nfs_server
*server
= NFS_SERVER(inode
);
867 struct nfs_client
*clp
= server
->nfs_client
;
868 struct nfs_inode
*nfsi
= NFS_I(inode
);
869 struct nfs4_state_owner
*sp
= NULL
;
870 struct nfs4_state
*state
= NULL
;
871 int open_flags
= flags
& (FMODE_READ
|FMODE_WRITE
);
875 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
876 dprintk("%s: nfs4_get_state_owner failed!\n", __FUNCTION__
);
879 err
= nfs4_recover_expired_lease(server
);
881 goto out_put_state_owner
;
882 /* Protect against reboot recovery - NOTE ORDER! */
883 down_read(&clp
->cl_sem
);
884 /* Protect against delegation recall */
885 down_read(&nfsi
->rwsem
);
886 delegation
= NFS_I(inode
)->delegation
;
888 if (delegation
== NULL
|| (delegation
->type
& open_flags
) != open_flags
)
891 state
= nfs4_get_open_state(inode
, sp
);
896 if ((state
->state
& open_flags
) == open_flags
) {
897 spin_lock(&inode
->i_lock
);
898 update_open_stateflags(state
, open_flags
);
899 spin_unlock(&inode
->i_lock
);
901 } else if (state
->state
!= 0)
902 goto out_put_open_state
;
905 err
= _nfs4_do_access(inode
, cred
, open_flags
);
908 goto out_put_open_state
;
909 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
910 update_open_stateid(state
, &delegation
->stateid
, open_flags
);
912 nfs4_put_state_owner(sp
);
913 up_read(&nfsi
->rwsem
);
914 up_read(&clp
->cl_sem
);
918 nfs4_put_open_state(state
);
920 up_read(&nfsi
->rwsem
);
921 up_read(&clp
->cl_sem
);
923 nfs_inode_return_delegation(inode
);
925 nfs4_put_state_owner(sp
);
929 static struct nfs4_state
*nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
)
931 struct nfs4_exception exception
= { };
932 struct nfs4_state
*res
= ERR_PTR(-EIO
);
936 err
= _nfs4_open_delegated(inode
, flags
, cred
, &res
);
939 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(inode
),
941 } while (exception
.retry
);
946 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
947 * fields corresponding to attributes that were used to store the verifier.
948 * Make sure we clobber those fields in the later setattr call
950 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
952 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
953 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
954 sattr
->ia_valid
|= ATTR_ATIME
;
956 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
957 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
958 sattr
->ia_valid
|= ATTR_MTIME
;
962 * Returns a referenced nfs4_state
964 static int _nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
966 struct nfs4_state_owner
*sp
;
967 struct nfs4_state
*state
= NULL
;
968 struct nfs_server
*server
= NFS_SERVER(dir
);
969 struct nfs_client
*clp
= server
->nfs_client
;
970 struct nfs4_opendata
*opendata
;
973 /* Protect against reboot recovery conflicts */
975 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
976 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
979 status
= nfs4_recover_expired_lease(server
);
981 goto err_put_state_owner
;
982 down_read(&clp
->cl_sem
);
984 opendata
= nfs4_opendata_alloc(path
, sp
, flags
, sattr
);
985 if (opendata
== NULL
)
986 goto err_release_rwsem
;
988 status
= _nfs4_proc_open(opendata
);
990 goto err_opendata_free
;
992 if (opendata
->o_arg
.open_flags
& O_EXCL
)
993 nfs4_exclusive_attrset(opendata
, sattr
);
996 state
= nfs4_opendata_to_nfs4_state(opendata
);
998 goto err_opendata_free
;
999 if (opendata
->o_res
.delegation_type
!= 0)
1000 nfs_inode_set_delegation(state
->inode
, cred
, &opendata
->o_res
);
1001 nfs4_opendata_free(opendata
);
1002 nfs4_put_state_owner(sp
);
1003 up_read(&clp
->cl_sem
);
1007 nfs4_opendata_free(opendata
);
1009 up_read(&clp
->cl_sem
);
1010 err_put_state_owner
:
1011 nfs4_put_state_owner(sp
);
1018 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1020 struct nfs4_exception exception
= { };
1021 struct nfs4_state
*res
;
1025 status
= _nfs4_do_open(dir
, path
, flags
, sattr
, cred
, &res
);
1028 /* NOTE: BAD_SEQID means the server and client disagree about the
1029 * book-keeping w.r.t. state-changing operations
1030 * (OPEN/CLOSE/LOCK/LOCKU...)
1031 * It is actually a sign of a bug on the client or on the server.
1033 * If we receive a BAD_SEQID error in the particular case of
1034 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1035 * have unhashed the old state_owner for us, and that we can
1036 * therefore safely retry using a new one. We should still warn
1037 * the user though...
1039 if (status
== -NFS4ERR_BAD_SEQID
) {
1040 printk(KERN_WARNING
"NFS: v4 server returned a bad sequence-id error!\n");
1041 exception
.retry
= 1;
1045 * BAD_STATEID on OPEN means that the server cancelled our
1046 * state before it received the OPEN_CONFIRM.
1047 * Recover by retrying the request as per the discussion
1048 * on Page 181 of RFC3530.
1050 if (status
== -NFS4ERR_BAD_STATEID
) {
1051 exception
.retry
= 1;
1054 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1055 status
, &exception
));
1056 } while (exception
.retry
);
1060 static int _nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1061 struct iattr
*sattr
, struct nfs4_state
*state
)
1063 struct nfs_server
*server
= NFS_SERVER(inode
);
1064 struct nfs_setattrargs arg
= {
1065 .fh
= NFS_FH(inode
),
1068 .bitmask
= server
->attr_bitmask
,
1070 struct nfs_setattrres res
= {
1074 struct rpc_message msg
= {
1075 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1079 unsigned long timestamp
= jiffies
;
1082 nfs_fattr_init(fattr
);
1084 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1085 /* Use that stateid */
1086 } else if (state
!= NULL
) {
1087 msg
.rpc_cred
= state
->owner
->so_cred
;
1088 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1090 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1092 status
= rpc_call_sync(server
->client
, &msg
, 0);
1093 if (status
== 0 && state
!= NULL
)
1094 renew_lease(server
, timestamp
);
1098 static int nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1099 struct iattr
*sattr
, struct nfs4_state
*state
)
1101 struct nfs_server
*server
= NFS_SERVER(inode
);
1102 struct nfs4_exception exception
= { };
1105 err
= nfs4_handle_exception(server
,
1106 _nfs4_do_setattr(inode
, fattr
, sattr
, state
),
1108 } while (exception
.retry
);
1112 struct nfs4_closedata
{
1114 struct inode
*inode
;
1115 struct nfs4_state
*state
;
1116 struct nfs_closeargs arg
;
1117 struct nfs_closeres res
;
1118 struct nfs_fattr fattr
;
1119 unsigned long timestamp
;
1122 static void nfs4_free_closedata(void *data
)
1124 struct nfs4_closedata
*calldata
= data
;
1125 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1127 nfs4_put_open_state(calldata
->state
);
1128 nfs_free_seqid(calldata
->arg
.seqid
);
1129 nfs4_put_state_owner(sp
);
1130 dput(calldata
->path
.dentry
);
1131 mntput(calldata
->path
.mnt
);
1135 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1137 struct nfs4_closedata
*calldata
= data
;
1138 struct nfs4_state
*state
= calldata
->state
;
1139 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1141 if (RPC_ASSASSINATED(task
))
1143 /* hmm. we are done with the inode, and in the process of freeing
1144 * the state_owner. we keep this around to process errors
1146 nfs_increment_open_seqid(task
->tk_status
, calldata
->arg
.seqid
);
1147 switch (task
->tk_status
) {
1149 memcpy(&state
->stateid
, &calldata
->res
.stateid
,
1150 sizeof(state
->stateid
));
1151 renew_lease(server
, calldata
->timestamp
);
1153 case -NFS4ERR_STALE_STATEID
:
1154 case -NFS4ERR_EXPIRED
:
1157 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
1158 rpc_restart_call(task
);
1162 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1165 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1167 struct nfs4_closedata
*calldata
= data
;
1168 struct nfs4_state
*state
= calldata
->state
;
1169 struct rpc_message msg
= {
1170 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1171 .rpc_argp
= &calldata
->arg
,
1172 .rpc_resp
= &calldata
->res
,
1173 .rpc_cred
= state
->owner
->so_cred
,
1175 int mode
= 0, old_mode
;
1177 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1179 /* Recalculate the new open mode in case someone reopened the file
1180 * while we were waiting in line to be scheduled.
1182 spin_lock(&state
->owner
->so_lock
);
1183 spin_lock(&calldata
->inode
->i_lock
);
1184 mode
= old_mode
= state
->state
;
1185 if (state
->n_rdwr
== 0) {
1186 if (state
->n_rdonly
== 0)
1187 mode
&= ~FMODE_READ
;
1188 if (state
->n_wronly
== 0)
1189 mode
&= ~FMODE_WRITE
;
1191 nfs4_state_set_mode_locked(state
, mode
);
1192 spin_unlock(&calldata
->inode
->i_lock
);
1193 spin_unlock(&state
->owner
->so_lock
);
1194 if (mode
== old_mode
|| test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
1195 /* Note: exit _without_ calling nfs4_close_done */
1196 task
->tk_action
= NULL
;
1199 nfs_fattr_init(calldata
->res
.fattr
);
1201 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1202 calldata
->arg
.open_flags
= mode
;
1203 calldata
->timestamp
= jiffies
;
1204 rpc_call_setup(task
, &msg
, 0);
1207 static const struct rpc_call_ops nfs4_close_ops
= {
1208 .rpc_call_prepare
= nfs4_close_prepare
,
1209 .rpc_call_done
= nfs4_close_done
,
1210 .rpc_release
= nfs4_free_closedata
,
1214 * It is possible for data to be read/written from a mem-mapped file
1215 * after the sys_close call (which hits the vfs layer as a flush).
1216 * This means that we can't safely call nfsv4 close on a file until
1217 * the inode is cleared. This in turn means that we are not good
1218 * NFSv4 citizens - we do not indicate to the server to update the file's
1219 * share state even when we are done with one of the three share
1220 * stateid's in the inode.
1222 * NOTE: Caller must be holding the sp->so_owner semaphore!
1224 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
)
1226 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1227 struct nfs4_closedata
*calldata
;
1228 struct nfs4_state_owner
*sp
= state
->owner
;
1229 struct rpc_task
*task
;
1230 int status
= -ENOMEM
;
1232 calldata
= kmalloc(sizeof(*calldata
), GFP_KERNEL
);
1233 if (calldata
== NULL
)
1235 calldata
->inode
= state
->inode
;
1236 calldata
->state
= state
;
1237 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1238 calldata
->arg
.stateid
= &state
->stateid
;
1239 /* Serialization for the sequence id */
1240 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1241 if (calldata
->arg
.seqid
== NULL
)
1242 goto out_free_calldata
;
1243 calldata
->arg
.bitmask
= server
->attr_bitmask
;
1244 calldata
->res
.fattr
= &calldata
->fattr
;
1245 calldata
->res
.server
= server
;
1246 calldata
->path
.mnt
= mntget(path
->mnt
);
1247 calldata
->path
.dentry
= dget(path
->dentry
);
1249 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_close_ops
, calldata
);
1251 return PTR_ERR(task
);
1257 nfs4_put_open_state(state
);
1258 nfs4_put_state_owner(sp
);
1262 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
)
1266 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1267 if (!IS_ERR(filp
)) {
1268 struct nfs_open_context
*ctx
;
1269 ctx
= (struct nfs_open_context
*)filp
->private_data
;
1273 nfs4_close_state(path
, state
, nd
->intent
.open
.flags
);
1274 return PTR_ERR(filp
);
1278 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1280 struct path path
= {
1285 struct rpc_cred
*cred
;
1286 struct nfs4_state
*state
;
1289 if (nd
->flags
& LOOKUP_CREATE
) {
1290 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1291 attr
.ia_valid
= ATTR_MODE
;
1292 if (!IS_POSIXACL(dir
))
1293 attr
.ia_mode
&= ~current
->fs
->umask
;
1296 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1299 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1301 return (struct dentry
*)cred
;
1302 state
= nfs4_do_open(dir
, &path
, nd
->intent
.open
.flags
, &attr
, cred
);
1304 if (IS_ERR(state
)) {
1305 if (PTR_ERR(state
) == -ENOENT
)
1306 d_add(dentry
, NULL
);
1307 return (struct dentry
*)state
;
1309 res
= d_add_unique(dentry
, igrab(state
->inode
));
1312 nfs4_intent_set_file(nd
, &path
, state
);
1317 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1319 struct path path
= {
1323 struct rpc_cred
*cred
;
1324 struct nfs4_state
*state
;
1326 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1328 return PTR_ERR(cred
);
1329 state
= nfs4_open_delegated(dentry
->d_inode
, openflags
, cred
);
1331 state
= nfs4_do_open(dir
, &path
, openflags
, NULL
, cred
);
1333 if (IS_ERR(state
)) {
1334 switch (PTR_ERR(state
)) {
1340 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1346 if (state
->inode
== dentry
->d_inode
) {
1347 nfs4_intent_set_file(nd
, &path
, state
);
1350 nfs4_close_state(&path
, state
, openflags
);
1357 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1359 struct nfs4_server_caps_res res
= {};
1360 struct rpc_message msg
= {
1361 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1362 .rpc_argp
= fhandle
,
1367 status
= rpc_call_sync(server
->client
, &msg
, 0);
1369 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
1370 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
1371 server
->caps
|= NFS_CAP_ACLS
;
1372 if (res
.has_links
!= 0)
1373 server
->caps
|= NFS_CAP_HARDLINKS
;
1374 if (res
.has_symlinks
!= 0)
1375 server
->caps
|= NFS_CAP_SYMLINKS
;
1376 server
->acl_bitmask
= res
.acl_bitmask
;
1381 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1383 struct nfs4_exception exception
= { };
1386 err
= nfs4_handle_exception(server
,
1387 _nfs4_server_capabilities(server
, fhandle
),
1389 } while (exception
.retry
);
1393 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1394 struct nfs_fsinfo
*info
)
1396 struct nfs4_lookup_root_arg args
= {
1397 .bitmask
= nfs4_fattr_bitmap
,
1399 struct nfs4_lookup_res res
= {
1401 .fattr
= info
->fattr
,
1404 struct rpc_message msg
= {
1405 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
1409 nfs_fattr_init(info
->fattr
);
1410 return rpc_call_sync(server
->client
, &msg
, 0);
1413 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1414 struct nfs_fsinfo
*info
)
1416 struct nfs4_exception exception
= { };
1419 err
= nfs4_handle_exception(server
,
1420 _nfs4_lookup_root(server
, fhandle
, info
),
1422 } while (exception
.retry
);
1427 * get the file handle for the "/" directory on the server
1429 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1430 struct nfs_fsinfo
*info
)
1434 status
= nfs4_lookup_root(server
, fhandle
, info
);
1436 status
= nfs4_server_capabilities(server
, fhandle
);
1438 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
1439 return nfs4_map_errors(status
);
1443 * Get locations and (maybe) other attributes of a referral.
1444 * Note that we'll actually follow the referral later when
1445 * we detect fsid mismatch in inode revalidation
1447 static int nfs4_get_referral(struct inode
*dir
, struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
1449 int status
= -ENOMEM
;
1450 struct page
*page
= NULL
;
1451 struct nfs4_fs_locations
*locations
= NULL
;
1453 page
= alloc_page(GFP_KERNEL
);
1456 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
1457 if (locations
== NULL
)
1460 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
1463 /* Make sure server returned a different fsid for the referral */
1464 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
1465 dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__
, name
->name
);
1470 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
1471 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
1473 fattr
->mode
= S_IFDIR
;
1474 memset(fhandle
, 0, sizeof(struct nfs_fh
));
1483 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1485 struct nfs4_getattr_arg args
= {
1487 .bitmask
= server
->attr_bitmask
,
1489 struct nfs4_getattr_res res
= {
1493 struct rpc_message msg
= {
1494 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
1499 nfs_fattr_init(fattr
);
1500 return rpc_call_sync(server
->client
, &msg
, 0);
1503 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1505 struct nfs4_exception exception
= { };
1508 err
= nfs4_handle_exception(server
,
1509 _nfs4_proc_getattr(server
, fhandle
, fattr
),
1511 } while (exception
.retry
);
1516 * The file is not closed if it is opened due to the a request to change
1517 * the size of the file. The open call will not be needed once the
1518 * VFS layer lookup-intents are implemented.
1520 * Close is called when the inode is destroyed.
1521 * If we haven't opened the file for O_WRONLY, we
1522 * need to in the size_change case to obtain a stateid.
1525 * Because OPEN is always done by name in nfsv4, it is
1526 * possible that we opened a different file by the same
1527 * name. We can recognize this race condition, but we
1528 * can't do anything about it besides returning an error.
1530 * This will be fixed with VFS changes (lookup-intent).
1533 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
1534 struct iattr
*sattr
)
1536 struct rpc_cred
*cred
;
1537 struct inode
*inode
= dentry
->d_inode
;
1538 struct nfs_open_context
*ctx
;
1539 struct nfs4_state
*state
= NULL
;
1542 nfs_fattr_init(fattr
);
1544 cred
= rpcauth_lookupcred(NFS_CLIENT(inode
)->cl_auth
, 0);
1546 return PTR_ERR(cred
);
1548 /* Search for an existing open(O_WRITE) file */
1549 ctx
= nfs_find_open_context(inode
, cred
, FMODE_WRITE
);
1553 status
= nfs4_do_setattr(inode
, fattr
, sattr
, state
);
1555 nfs_setattr_update_inode(inode
, sattr
);
1557 put_nfs_open_context(ctx
);
1562 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1563 struct qstr
*name
, struct nfs_fh
*fhandle
,
1564 struct nfs_fattr
*fattr
)
1567 struct nfs4_lookup_arg args
= {
1568 .bitmask
= server
->attr_bitmask
,
1572 struct nfs4_lookup_res res
= {
1577 struct rpc_message msg
= {
1578 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1583 nfs_fattr_init(fattr
);
1585 dprintk("NFS call lookupfh %s\n", name
->name
);
1586 status
= rpc_call_sync(server
->client
, &msg
, 0);
1587 dprintk("NFS reply lookupfh: %d\n", status
);
1588 if (status
== -NFS4ERR_MOVED
)
1593 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1594 struct qstr
*name
, struct nfs_fh
*fhandle
,
1595 struct nfs_fattr
*fattr
)
1597 struct nfs4_exception exception
= { };
1600 err
= nfs4_handle_exception(server
,
1601 _nfs4_proc_lookupfh(server
, dirfh
, name
,
1604 } while (exception
.retry
);
1608 static int _nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
1609 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1612 struct nfs_server
*server
= NFS_SERVER(dir
);
1613 struct nfs4_lookup_arg args
= {
1614 .bitmask
= server
->attr_bitmask
,
1615 .dir_fh
= NFS_FH(dir
),
1618 struct nfs4_lookup_res res
= {
1623 struct rpc_message msg
= {
1624 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1629 nfs_fattr_init(fattr
);
1631 dprintk("NFS call lookup %s\n", name
->name
);
1632 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
1633 if (status
== -NFS4ERR_MOVED
)
1634 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
1635 dprintk("NFS reply lookup: %d\n", status
);
1639 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1641 struct nfs4_exception exception
= { };
1644 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1645 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
1647 } while (exception
.retry
);
1651 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1653 struct nfs4_accessargs args
= {
1654 .fh
= NFS_FH(inode
),
1656 struct nfs4_accessres res
= { 0 };
1657 struct rpc_message msg
= {
1658 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
1661 .rpc_cred
= entry
->cred
,
1663 int mode
= entry
->mask
;
1667 * Determine which access bits we want to ask for...
1669 if (mode
& MAY_READ
)
1670 args
.access
|= NFS4_ACCESS_READ
;
1671 if (S_ISDIR(inode
->i_mode
)) {
1672 if (mode
& MAY_WRITE
)
1673 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
1674 if (mode
& MAY_EXEC
)
1675 args
.access
|= NFS4_ACCESS_LOOKUP
;
1677 if (mode
& MAY_WRITE
)
1678 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
1679 if (mode
& MAY_EXEC
)
1680 args
.access
|= NFS4_ACCESS_EXECUTE
;
1682 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1685 if (res
.access
& NFS4_ACCESS_READ
)
1686 entry
->mask
|= MAY_READ
;
1687 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
1688 entry
->mask
|= MAY_WRITE
;
1689 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
1690 entry
->mask
|= MAY_EXEC
;
1695 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1697 struct nfs4_exception exception
= { };
1700 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1701 _nfs4_proc_access(inode
, entry
),
1703 } while (exception
.retry
);
1708 * TODO: For the time being, we don't try to get any attributes
1709 * along with any of the zero-copy operations READ, READDIR,
1712 * In the case of the first three, we want to put the GETATTR
1713 * after the read-type operation -- this is because it is hard
1714 * to predict the length of a GETATTR response in v4, and thus
1715 * align the READ data correctly. This means that the GETATTR
1716 * may end up partially falling into the page cache, and we should
1717 * shift it into the 'tail' of the xdr_buf before processing.
1718 * To do this efficiently, we need to know the total length
1719 * of data received, which doesn't seem to be available outside
1722 * In the case of WRITE, we also want to put the GETATTR after
1723 * the operation -- in this case because we want to make sure
1724 * we get the post-operation mtime and size. This means that
1725 * we can't use xdr_encode_pages() as written: we need a variant
1726 * of it which would leave room in the 'tail' iovec.
1728 * Both of these changes to the XDR layer would in fact be quite
1729 * minor, but I decided to leave them for a subsequent patch.
1731 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1732 unsigned int pgbase
, unsigned int pglen
)
1734 struct nfs4_readlink args
= {
1735 .fh
= NFS_FH(inode
),
1740 struct rpc_message msg
= {
1741 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
1746 return rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1749 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1750 unsigned int pgbase
, unsigned int pglen
)
1752 struct nfs4_exception exception
= { };
1755 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1756 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
1758 } while (exception
.retry
);
1764 * We will need to arrange for the VFS layer to provide an atomic open.
1765 * Until then, this create/open method is prone to inefficiency and race
1766 * conditions due to the lookup, create, and open VFS calls from sys_open()
1767 * placed on the wire.
1769 * Given the above sorry state of affairs, I'm simply sending an OPEN.
1770 * The file will be opened again in the subsequent VFS open call
1771 * (nfs4_proc_file_open).
1773 * The open for read will just hang around to be used by any process that
1774 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
1778 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
1779 int flags
, struct nameidata
*nd
)
1781 struct path path
= {
1785 struct nfs4_state
*state
;
1786 struct rpc_cred
*cred
;
1789 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1791 status
= PTR_ERR(cred
);
1794 state
= nfs4_do_open(dir
, &path
, flags
, sattr
, cred
);
1796 if (IS_ERR(state
)) {
1797 status
= PTR_ERR(state
);
1800 d_instantiate(dentry
, igrab(state
->inode
));
1801 if (flags
& O_EXCL
) {
1802 struct nfs_fattr fattr
;
1803 status
= nfs4_do_setattr(state
->inode
, &fattr
, sattr
, state
);
1805 nfs_setattr_update_inode(state
->inode
, sattr
);
1806 nfs_post_op_update_inode(state
->inode
, &fattr
);
1808 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
1809 status
= nfs4_intent_set_file(nd
, &path
, state
);
1811 nfs4_close_state(&path
, state
, flags
);
1816 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1818 struct nfs_server
*server
= NFS_SERVER(dir
);
1819 struct nfs4_remove_arg args
= {
1822 .bitmask
= server
->attr_bitmask
,
1824 struct nfs_fattr dir_attr
;
1825 struct nfs4_remove_res res
= {
1827 .dir_attr
= &dir_attr
,
1829 struct rpc_message msg
= {
1830 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
1836 nfs_fattr_init(res
.dir_attr
);
1837 status
= rpc_call_sync(server
->client
, &msg
, 0);
1839 update_changeattr(dir
, &res
.cinfo
);
1840 nfs_post_op_update_inode(dir
, res
.dir_attr
);
1845 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1847 struct nfs4_exception exception
= { };
1850 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1851 _nfs4_proc_remove(dir
, name
),
1853 } while (exception
.retry
);
1857 struct unlink_desc
{
1858 struct nfs4_remove_arg args
;
1859 struct nfs4_remove_res res
;
1860 struct nfs_fattr dir_attr
;
1863 static int nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct dentry
*dir
,
1866 struct nfs_server
*server
= NFS_SERVER(dir
->d_inode
);
1867 struct unlink_desc
*up
;
1869 up
= kmalloc(sizeof(*up
), GFP_KERNEL
);
1873 up
->args
.fh
= NFS_FH(dir
->d_inode
);
1874 up
->args
.name
= name
;
1875 up
->args
.bitmask
= server
->attr_bitmask
;
1876 up
->res
.server
= server
;
1877 up
->res
.dir_attr
= &up
->dir_attr
;
1879 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
1880 msg
->rpc_argp
= &up
->args
;
1881 msg
->rpc_resp
= &up
->res
;
1885 static int nfs4_proc_unlink_done(struct dentry
*dir
, struct rpc_task
*task
)
1887 struct rpc_message
*msg
= &task
->tk_msg
;
1888 struct unlink_desc
*up
;
1890 if (msg
->rpc_resp
!= NULL
) {
1891 up
= container_of(msg
->rpc_resp
, struct unlink_desc
, res
);
1892 update_changeattr(dir
->d_inode
, &up
->res
.cinfo
);
1893 nfs_post_op_update_inode(dir
->d_inode
, up
->res
.dir_attr
);
1895 msg
->rpc_resp
= NULL
;
1896 msg
->rpc_argp
= NULL
;
1901 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1902 struct inode
*new_dir
, struct qstr
*new_name
)
1904 struct nfs_server
*server
= NFS_SERVER(old_dir
);
1905 struct nfs4_rename_arg arg
= {
1906 .old_dir
= NFS_FH(old_dir
),
1907 .new_dir
= NFS_FH(new_dir
),
1908 .old_name
= old_name
,
1909 .new_name
= new_name
,
1910 .bitmask
= server
->attr_bitmask
,
1912 struct nfs_fattr old_fattr
, new_fattr
;
1913 struct nfs4_rename_res res
= {
1915 .old_fattr
= &old_fattr
,
1916 .new_fattr
= &new_fattr
,
1918 struct rpc_message msg
= {
1919 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
1925 nfs_fattr_init(res
.old_fattr
);
1926 nfs_fattr_init(res
.new_fattr
);
1927 status
= rpc_call_sync(server
->client
, &msg
, 0);
1930 update_changeattr(old_dir
, &res
.old_cinfo
);
1931 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
1932 update_changeattr(new_dir
, &res
.new_cinfo
);
1933 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
1938 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1939 struct inode
*new_dir
, struct qstr
*new_name
)
1941 struct nfs4_exception exception
= { };
1944 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
1945 _nfs4_proc_rename(old_dir
, old_name
,
1948 } while (exception
.retry
);
1952 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
1954 struct nfs_server
*server
= NFS_SERVER(inode
);
1955 struct nfs4_link_arg arg
= {
1956 .fh
= NFS_FH(inode
),
1957 .dir_fh
= NFS_FH(dir
),
1959 .bitmask
= server
->attr_bitmask
,
1961 struct nfs_fattr fattr
, dir_attr
;
1962 struct nfs4_link_res res
= {
1965 .dir_attr
= &dir_attr
,
1967 struct rpc_message msg
= {
1968 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
1974 nfs_fattr_init(res
.fattr
);
1975 nfs_fattr_init(res
.dir_attr
);
1976 status
= rpc_call_sync(server
->client
, &msg
, 0);
1978 update_changeattr(dir
, &res
.cinfo
);
1979 nfs_post_op_update_inode(dir
, res
.dir_attr
);
1980 nfs_post_op_update_inode(inode
, res
.fattr
);
1986 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
1988 struct nfs4_exception exception
= { };
1991 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1992 _nfs4_proc_link(inode
, dir
, name
),
1994 } while (exception
.retry
);
1998 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
1999 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2001 struct nfs_server
*server
= NFS_SERVER(dir
);
2002 struct nfs_fh fhandle
;
2003 struct nfs_fattr fattr
, dir_fattr
;
2004 struct nfs4_create_arg arg
= {
2005 .dir_fh
= NFS_FH(dir
),
2007 .name
= &dentry
->d_name
,
2010 .bitmask
= server
->attr_bitmask
,
2012 struct nfs4_create_res res
= {
2016 .dir_fattr
= &dir_fattr
,
2018 struct rpc_message msg
= {
2019 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
],
2025 if (len
> NFS4_MAXPATHLEN
)
2026 return -ENAMETOOLONG
;
2028 arg
.u
.symlink
.pages
= &page
;
2029 arg
.u
.symlink
.len
= len
;
2030 nfs_fattr_init(&fattr
);
2031 nfs_fattr_init(&dir_fattr
);
2033 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2035 update_changeattr(dir
, &res
.dir_cinfo
);
2036 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2037 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2042 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2043 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2045 struct nfs4_exception exception
= { };
2048 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2049 _nfs4_proc_symlink(dir
, dentry
, page
,
2052 } while (exception
.retry
);
2056 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2057 struct iattr
*sattr
)
2059 struct nfs_server
*server
= NFS_SERVER(dir
);
2060 struct nfs_fh fhandle
;
2061 struct nfs_fattr fattr
, dir_fattr
;
2062 struct nfs4_create_arg arg
= {
2063 .dir_fh
= NFS_FH(dir
),
2065 .name
= &dentry
->d_name
,
2068 .bitmask
= server
->attr_bitmask
,
2070 struct nfs4_create_res res
= {
2074 .dir_fattr
= &dir_fattr
,
2076 struct rpc_message msg
= {
2077 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2083 nfs_fattr_init(&fattr
);
2084 nfs_fattr_init(&dir_fattr
);
2086 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2088 update_changeattr(dir
, &res
.dir_cinfo
);
2089 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2090 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2095 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2096 struct iattr
*sattr
)
2098 struct nfs4_exception exception
= { };
2101 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2102 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2104 } while (exception
.retry
);
2108 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2109 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2111 struct inode
*dir
= dentry
->d_inode
;
2112 struct nfs4_readdir_arg args
= {
2117 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2119 struct nfs4_readdir_res res
;
2120 struct rpc_message msg
= {
2121 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2128 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__
,
2129 dentry
->d_parent
->d_name
.name
,
2130 dentry
->d_name
.name
,
2131 (unsigned long long)cookie
);
2132 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2133 res
.pgbase
= args
.pgbase
;
2134 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2136 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2137 dprintk("%s: returns %d\n", __FUNCTION__
, status
);
2141 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2142 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2144 struct nfs4_exception exception
= { };
2147 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2148 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2151 } while (exception
.retry
);
2155 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2156 struct iattr
*sattr
, dev_t rdev
)
2158 struct nfs_server
*server
= NFS_SERVER(dir
);
2160 struct nfs_fattr fattr
, dir_fattr
;
2161 struct nfs4_create_arg arg
= {
2162 .dir_fh
= NFS_FH(dir
),
2164 .name
= &dentry
->d_name
,
2166 .bitmask
= server
->attr_bitmask
,
2168 struct nfs4_create_res res
= {
2172 .dir_fattr
= &dir_fattr
,
2174 struct rpc_message msg
= {
2175 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2180 int mode
= sattr
->ia_mode
;
2182 nfs_fattr_init(&fattr
);
2183 nfs_fattr_init(&dir_fattr
);
2185 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2186 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2188 arg
.ftype
= NF4FIFO
;
2189 else if (S_ISBLK(mode
)) {
2191 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2192 arg
.u
.device
.specdata2
= MINOR(rdev
);
2194 else if (S_ISCHR(mode
)) {
2196 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2197 arg
.u
.device
.specdata2
= MINOR(rdev
);
2200 arg
.ftype
= NF4SOCK
;
2202 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2204 update_changeattr(dir
, &res
.dir_cinfo
);
2205 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2206 status
= nfs_instantiate(dentry
, &fh
, &fattr
);
2211 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2212 struct iattr
*sattr
, dev_t rdev
)
2214 struct nfs4_exception exception
= { };
2217 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2218 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2220 } while (exception
.retry
);
2224 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2225 struct nfs_fsstat
*fsstat
)
2227 struct nfs4_statfs_arg args
= {
2229 .bitmask
= server
->attr_bitmask
,
2231 struct rpc_message msg
= {
2232 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2237 nfs_fattr_init(fsstat
->fattr
);
2238 return rpc_call_sync(server
->client
, &msg
, 0);
2241 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2243 struct nfs4_exception exception
= { };
2246 err
= nfs4_handle_exception(server
,
2247 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2249 } while (exception
.retry
);
2253 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2254 struct nfs_fsinfo
*fsinfo
)
2256 struct nfs4_fsinfo_arg args
= {
2258 .bitmask
= server
->attr_bitmask
,
2260 struct rpc_message msg
= {
2261 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2266 return rpc_call_sync(server
->client
, &msg
, 0);
2269 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2271 struct nfs4_exception exception
= { };
2275 err
= nfs4_handle_exception(server
,
2276 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2278 } while (exception
.retry
);
2282 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2284 nfs_fattr_init(fsinfo
->fattr
);
2285 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2288 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2289 struct nfs_pathconf
*pathconf
)
2291 struct nfs4_pathconf_arg args
= {
2293 .bitmask
= server
->attr_bitmask
,
2295 struct rpc_message msg
= {
2296 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2298 .rpc_resp
= pathconf
,
2301 /* None of the pathconf attributes are mandatory to implement */
2302 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2303 memset(pathconf
, 0, sizeof(*pathconf
));
2307 nfs_fattr_init(pathconf
->fattr
);
2308 return rpc_call_sync(server
->client
, &msg
, 0);
2311 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2312 struct nfs_pathconf
*pathconf
)
2314 struct nfs4_exception exception
= { };
2318 err
= nfs4_handle_exception(server
,
2319 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2321 } while (exception
.retry
);
2325 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2327 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2329 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
2330 rpc_restart_call(task
);
2333 if (task
->tk_status
> 0)
2334 renew_lease(server
, data
->timestamp
);
2338 static void nfs4_proc_read_setup(struct nfs_read_data
*data
)
2340 struct rpc_message msg
= {
2341 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
],
2342 .rpc_argp
= &data
->args
,
2343 .rpc_resp
= &data
->res
,
2344 .rpc_cred
= data
->cred
,
2347 data
->timestamp
= jiffies
;
2349 rpc_call_setup(&data
->task
, &msg
, 0);
2352 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2354 struct inode
*inode
= data
->inode
;
2356 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2357 rpc_restart_call(task
);
2360 if (task
->tk_status
>= 0) {
2361 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2362 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2367 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, int how
)
2369 struct rpc_message msg
= {
2370 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
],
2371 .rpc_argp
= &data
->args
,
2372 .rpc_resp
= &data
->res
,
2373 .rpc_cred
= data
->cred
,
2375 struct inode
*inode
= data
->inode
;
2376 struct nfs_server
*server
= NFS_SERVER(inode
);
2379 if (how
& FLUSH_STABLE
) {
2380 if (!NFS_I(inode
)->ncommit
)
2381 stable
= NFS_FILE_SYNC
;
2383 stable
= NFS_DATA_SYNC
;
2385 stable
= NFS_UNSTABLE
;
2386 data
->args
.stable
= stable
;
2387 data
->args
.bitmask
= server
->attr_bitmask
;
2388 data
->res
.server
= server
;
2390 data
->timestamp
= jiffies
;
2392 /* Finalize the task. */
2393 rpc_call_setup(&data
->task
, &msg
, 0);
2396 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2398 struct inode
*inode
= data
->inode
;
2400 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2401 rpc_restart_call(task
);
2404 if (task
->tk_status
>= 0)
2405 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2409 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, int how
)
2411 struct rpc_message msg
= {
2412 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
],
2413 .rpc_argp
= &data
->args
,
2414 .rpc_resp
= &data
->res
,
2415 .rpc_cred
= data
->cred
,
2417 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2419 data
->args
.bitmask
= server
->attr_bitmask
;
2420 data
->res
.server
= server
;
2422 rpc_call_setup(&data
->task
, &msg
, 0);
2426 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
2427 * standalone procedure for queueing an asynchronous RENEW.
2429 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
2431 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
2432 unsigned long timestamp
= (unsigned long)data
;
2434 if (task
->tk_status
< 0) {
2435 switch (task
->tk_status
) {
2436 case -NFS4ERR_STALE_CLIENTID
:
2437 case -NFS4ERR_EXPIRED
:
2438 case -NFS4ERR_CB_PATH_DOWN
:
2439 nfs4_schedule_state_recovery(clp
);
2443 spin_lock(&clp
->cl_lock
);
2444 if (time_before(clp
->cl_last_renewal
,timestamp
))
2445 clp
->cl_last_renewal
= timestamp
;
2446 spin_unlock(&clp
->cl_lock
);
2449 static const struct rpc_call_ops nfs4_renew_ops
= {
2450 .rpc_call_done
= nfs4_renew_done
,
2453 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2455 struct rpc_message msg
= {
2456 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2461 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
2462 &nfs4_renew_ops
, (void *)jiffies
);
2465 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2467 struct rpc_message msg
= {
2468 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2472 unsigned long now
= jiffies
;
2475 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2478 spin_lock(&clp
->cl_lock
);
2479 if (time_before(clp
->cl_last_renewal
,now
))
2480 clp
->cl_last_renewal
= now
;
2481 spin_unlock(&clp
->cl_lock
);
2485 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
2487 return (server
->caps
& NFS_CAP_ACLS
)
2488 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2489 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
2492 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
2493 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
2496 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
2498 static void buf_to_pages(const void *buf
, size_t buflen
,
2499 struct page
**pages
, unsigned int *pgbase
)
2501 const void *p
= buf
;
2503 *pgbase
= offset_in_page(buf
);
2505 while (p
< buf
+ buflen
) {
2506 *(pages
++) = virt_to_page(p
);
2507 p
+= PAGE_CACHE_SIZE
;
2511 struct nfs4_cached_acl
{
2517 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
2519 struct nfs_inode
*nfsi
= NFS_I(inode
);
2521 spin_lock(&inode
->i_lock
);
2522 kfree(nfsi
->nfs4_acl
);
2523 nfsi
->nfs4_acl
= acl
;
2524 spin_unlock(&inode
->i_lock
);
2527 static void nfs4_zap_acl_attr(struct inode
*inode
)
2529 nfs4_set_cached_acl(inode
, NULL
);
2532 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
2534 struct nfs_inode
*nfsi
= NFS_I(inode
);
2535 struct nfs4_cached_acl
*acl
;
2538 spin_lock(&inode
->i_lock
);
2539 acl
= nfsi
->nfs4_acl
;
2542 if (buf
== NULL
) /* user is just asking for length */
2544 if (acl
->cached
== 0)
2546 ret
= -ERANGE
; /* see getxattr(2) man page */
2547 if (acl
->len
> buflen
)
2549 memcpy(buf
, acl
->data
, acl
->len
);
2553 spin_unlock(&inode
->i_lock
);
2557 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
2559 struct nfs4_cached_acl
*acl
;
2561 if (buf
&& acl_len
<= PAGE_SIZE
) {
2562 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
2566 memcpy(acl
->data
, buf
, acl_len
);
2568 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
2575 nfs4_set_cached_acl(inode
, acl
);
2578 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2580 struct page
*pages
[NFS4ACL_MAXPAGES
];
2581 struct nfs_getaclargs args
= {
2582 .fh
= NFS_FH(inode
),
2586 size_t resp_len
= buflen
;
2588 struct rpc_message msg
= {
2589 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
2591 .rpc_resp
= &resp_len
,
2593 struct page
*localpage
= NULL
;
2596 if (buflen
< PAGE_SIZE
) {
2597 /* As long as we're doing a round trip to the server anyway,
2598 * let's be prepared for a page of acl data. */
2599 localpage
= alloc_page(GFP_KERNEL
);
2600 resp_buf
= page_address(localpage
);
2601 if (localpage
== NULL
)
2603 args
.acl_pages
[0] = localpage
;
2604 args
.acl_pgbase
= 0;
2605 resp_len
= args
.acl_len
= PAGE_SIZE
;
2608 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
2610 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2613 if (resp_len
> args
.acl_len
)
2614 nfs4_write_cached_acl(inode
, NULL
, resp_len
);
2616 nfs4_write_cached_acl(inode
, resp_buf
, resp_len
);
2619 if (resp_len
> buflen
)
2622 memcpy(buf
, resp_buf
, resp_len
);
2627 __free_page(localpage
);
2631 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2633 struct nfs4_exception exception
= { };
2636 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
2639 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
2640 } while (exception
.retry
);
2644 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
2646 struct nfs_server
*server
= NFS_SERVER(inode
);
2649 if (!nfs4_server_supports_acls(server
))
2651 ret
= nfs_revalidate_inode(server
, inode
);
2654 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
2657 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
2660 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2662 struct nfs_server
*server
= NFS_SERVER(inode
);
2663 struct page
*pages
[NFS4ACL_MAXPAGES
];
2664 struct nfs_setaclargs arg
= {
2665 .fh
= NFS_FH(inode
),
2669 struct rpc_message msg
= {
2670 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
2676 if (!nfs4_server_supports_acls(server
))
2678 nfs_inode_return_delegation(inode
);
2679 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
2680 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2681 nfs_zap_caches(inode
);
2685 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2687 struct nfs4_exception exception
= { };
2690 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2691 __nfs4_proc_set_acl(inode
, buf
, buflen
),
2693 } while (exception
.retry
);
2698 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
)
2700 struct nfs_client
*clp
= server
->nfs_client
;
2702 if (!clp
|| task
->tk_status
>= 0)
2704 switch(task
->tk_status
) {
2705 case -NFS4ERR_STALE_CLIENTID
:
2706 case -NFS4ERR_STALE_STATEID
:
2707 case -NFS4ERR_EXPIRED
:
2708 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
, NULL
);
2709 nfs4_schedule_state_recovery(clp
);
2710 if (test_bit(NFS4CLNT_STATE_RECOVER
, &clp
->cl_state
) == 0)
2711 rpc_wake_up_task(task
);
2712 task
->tk_status
= 0;
2714 case -NFS4ERR_DELAY
:
2715 nfs_inc_server_stats((struct nfs_server
*) server
,
2717 case -NFS4ERR_GRACE
:
2718 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
2719 task
->tk_status
= 0;
2721 case -NFS4ERR_OLD_STATEID
:
2722 task
->tk_status
= 0;
2725 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
2729 static int nfs4_wait_bit_interruptible(void *word
)
2731 if (signal_pending(current
))
2732 return -ERESTARTSYS
;
2737 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
)
2744 rwsem_acquire(&clp
->cl_sem
.dep_map
, 0, 0, _RET_IP_
);
2746 rpc_clnt_sigmask(clnt
, &oldset
);
2747 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_STATE_RECOVER
,
2748 nfs4_wait_bit_interruptible
,
2749 TASK_INTERRUPTIBLE
);
2750 rpc_clnt_sigunmask(clnt
, &oldset
);
2752 rwsem_release(&clp
->cl_sem
.dep_map
, 1, _RET_IP_
);
2756 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
2764 *timeout
= NFS4_POLL_RETRY_MIN
;
2765 if (*timeout
> NFS4_POLL_RETRY_MAX
)
2766 *timeout
= NFS4_POLL_RETRY_MAX
;
2767 rpc_clnt_sigmask(clnt
, &oldset
);
2768 if (clnt
->cl_intr
) {
2769 schedule_timeout_interruptible(*timeout
);
2773 schedule_timeout_uninterruptible(*timeout
);
2774 rpc_clnt_sigunmask(clnt
, &oldset
);
2779 /* This is the error handling routine for processes that are allowed
2782 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
2784 struct nfs_client
*clp
= server
->nfs_client
;
2785 int ret
= errorcode
;
2787 exception
->retry
= 0;
2791 case -NFS4ERR_STALE_CLIENTID
:
2792 case -NFS4ERR_STALE_STATEID
:
2793 case -NFS4ERR_EXPIRED
:
2794 nfs4_schedule_state_recovery(clp
);
2795 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
2797 exception
->retry
= 1;
2799 case -NFS4ERR_FILE_OPEN
:
2800 case -NFS4ERR_GRACE
:
2801 case -NFS4ERR_DELAY
:
2802 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
2805 case -NFS4ERR_OLD_STATEID
:
2806 exception
->retry
= 1;
2808 /* We failed to handle the error */
2809 return nfs4_map_errors(ret
);
2812 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
2814 nfs4_verifier sc_verifier
;
2815 struct nfs4_setclientid setclientid
= {
2816 .sc_verifier
= &sc_verifier
,
2819 struct rpc_message msg
= {
2820 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
2821 .rpc_argp
= &setclientid
,
2829 p
= (__be32
*)sc_verifier
.data
;
2830 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
2831 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
2834 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
2835 sizeof(setclientid
.sc_name
), "%s/%u.%u.%u.%u %s %u",
2836 clp
->cl_ipaddr
, NIPQUAD(clp
->cl_addr
.sin_addr
),
2837 cred
->cr_ops
->cr_name
,
2838 clp
->cl_id_uniquifier
);
2839 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
2840 sizeof(setclientid
.sc_netid
), "tcp");
2841 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
2842 sizeof(setclientid
.sc_uaddr
), "%s.%d.%d",
2843 clp
->cl_ipaddr
, port
>> 8, port
& 255);
2845 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2846 if (status
!= -NFS4ERR_CLID_INUSE
)
2851 ssleep(clp
->cl_lease_time
+ 1);
2853 if (++clp
->cl_id_uniquifier
== 0)
2859 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2861 struct nfs_fsinfo fsinfo
;
2862 struct rpc_message msg
= {
2863 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
2865 .rpc_resp
= &fsinfo
,
2872 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2874 spin_lock(&clp
->cl_lock
);
2875 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
2876 clp
->cl_last_renewal
= now
;
2877 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
2878 spin_unlock(&clp
->cl_lock
);
2883 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2888 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
2892 case -NFS4ERR_RESOURCE
:
2893 /* The IBM lawyers misread another document! */
2894 case -NFS4ERR_DELAY
:
2895 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
2901 struct nfs4_delegreturndata
{
2902 struct nfs4_delegreturnargs args
;
2903 struct nfs4_delegreturnres res
;
2905 nfs4_stateid stateid
;
2906 struct rpc_cred
*cred
;
2907 unsigned long timestamp
;
2908 struct nfs_fattr fattr
;
2912 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *calldata
)
2914 struct nfs4_delegreturndata
*data
= calldata
;
2915 struct rpc_message msg
= {
2916 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
2917 .rpc_argp
= &data
->args
,
2918 .rpc_resp
= &data
->res
,
2919 .rpc_cred
= data
->cred
,
2921 nfs_fattr_init(data
->res
.fattr
);
2922 rpc_call_setup(task
, &msg
, 0);
2925 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
2927 struct nfs4_delegreturndata
*data
= calldata
;
2928 data
->rpc_status
= task
->tk_status
;
2929 if (data
->rpc_status
== 0)
2930 renew_lease(data
->res
.server
, data
->timestamp
);
2933 static void nfs4_delegreturn_release(void *calldata
)
2935 struct nfs4_delegreturndata
*data
= calldata
;
2937 put_rpccred(data
->cred
);
2941 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
2942 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
2943 .rpc_call_done
= nfs4_delegreturn_done
,
2944 .rpc_release
= nfs4_delegreturn_release
,
2947 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2949 struct nfs4_delegreturndata
*data
;
2950 struct nfs_server
*server
= NFS_SERVER(inode
);
2951 struct rpc_task
*task
;
2954 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
2957 data
->args
.fhandle
= &data
->fh
;
2958 data
->args
.stateid
= &data
->stateid
;
2959 data
->args
.bitmask
= server
->attr_bitmask
;
2960 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
2961 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
2962 data
->res
.fattr
= &data
->fattr
;
2963 data
->res
.server
= server
;
2964 data
->cred
= get_rpccred(cred
);
2965 data
->timestamp
= jiffies
;
2966 data
->rpc_status
= 0;
2968 task
= rpc_run_task(NFS_CLIENT(inode
), RPC_TASK_ASYNC
, &nfs4_delegreturn_ops
, data
);
2970 return PTR_ERR(task
);
2971 status
= nfs4_wait_for_completion_rpc_task(task
);
2973 status
= data
->rpc_status
;
2975 nfs_post_op_update_inode(inode
, &data
->fattr
);
2981 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2983 struct nfs_server
*server
= NFS_SERVER(inode
);
2984 struct nfs4_exception exception
= { };
2987 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
);
2989 case -NFS4ERR_STALE_STATEID
:
2990 case -NFS4ERR_EXPIRED
:
2994 err
= nfs4_handle_exception(server
, err
, &exception
);
2995 } while (exception
.retry
);
2999 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3000 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3003 * sleep, with exponential backoff, and retry the LOCK operation.
3005 static unsigned long
3006 nfs4_set_lock_task_retry(unsigned long timeout
)
3008 schedule_timeout_interruptible(timeout
);
3010 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3011 return NFS4_LOCK_MAXTIMEOUT
;
3015 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3017 struct inode
*inode
= state
->inode
;
3018 struct nfs_server
*server
= NFS_SERVER(inode
);
3019 struct nfs_client
*clp
= server
->nfs_client
;
3020 struct nfs_lockt_args arg
= {
3021 .fh
= NFS_FH(inode
),
3024 struct nfs_lockt_res res
= {
3027 struct rpc_message msg
= {
3028 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3031 .rpc_cred
= state
->owner
->so_cred
,
3033 struct nfs4_lock_state
*lsp
;
3036 down_read(&clp
->cl_sem
);
3037 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3038 status
= nfs4_set_lock_state(state
, request
);
3041 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3042 arg
.lock_owner
.id
= lsp
->ls_id
;
3043 status
= rpc_call_sync(server
->client
, &msg
, 0);
3046 request
->fl_type
= F_UNLCK
;
3048 case -NFS4ERR_DENIED
:
3051 request
->fl_ops
->fl_release_private(request
);
3053 up_read(&clp
->cl_sem
);
3057 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3059 struct nfs4_exception exception
= { };
3063 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3064 _nfs4_proc_getlk(state
, cmd
, request
),
3066 } while (exception
.retry
);
3070 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3073 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3075 res
= posix_lock_file_wait(file
, fl
);
3078 res
= flock_lock_file_wait(file
, fl
);
3086 struct nfs4_unlockdata
{
3087 struct nfs_locku_args arg
;
3088 struct nfs_locku_res res
;
3089 struct nfs4_lock_state
*lsp
;
3090 struct nfs_open_context
*ctx
;
3091 struct file_lock fl
;
3092 const struct nfs_server
*server
;
3093 unsigned long timestamp
;
3096 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3097 struct nfs_open_context
*ctx
,
3098 struct nfs4_lock_state
*lsp
,
3099 struct nfs_seqid
*seqid
)
3101 struct nfs4_unlockdata
*p
;
3102 struct inode
*inode
= lsp
->ls_state
->inode
;
3104 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
3107 p
->arg
.fh
= NFS_FH(inode
);
3109 p
->arg
.seqid
= seqid
;
3110 p
->arg
.stateid
= &lsp
->ls_stateid
;
3112 atomic_inc(&lsp
->ls_count
);
3113 /* Ensure we don't close file until we're done freeing locks! */
3114 p
->ctx
= get_nfs_open_context(ctx
);
3115 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3116 p
->server
= NFS_SERVER(inode
);
3120 static void nfs4_locku_release_calldata(void *data
)
3122 struct nfs4_unlockdata
*calldata
= data
;
3123 nfs_free_seqid(calldata
->arg
.seqid
);
3124 nfs4_put_lock_state(calldata
->lsp
);
3125 put_nfs_open_context(calldata
->ctx
);
3129 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3131 struct nfs4_unlockdata
*calldata
= data
;
3133 if (RPC_ASSASSINATED(task
))
3135 nfs_increment_lock_seqid(task
->tk_status
, calldata
->arg
.seqid
);
3136 switch (task
->tk_status
) {
3138 memcpy(calldata
->lsp
->ls_stateid
.data
,
3139 calldata
->res
.stateid
.data
,
3140 sizeof(calldata
->lsp
->ls_stateid
.data
));
3141 renew_lease(calldata
->server
, calldata
->timestamp
);
3143 case -NFS4ERR_STALE_STATEID
:
3144 case -NFS4ERR_EXPIRED
:
3147 if (nfs4_async_handle_error(task
, calldata
->server
) == -EAGAIN
)
3148 rpc_restart_call(task
);
3152 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3154 struct nfs4_unlockdata
*calldata
= data
;
3155 struct rpc_message msg
= {
3156 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3157 .rpc_argp
= &calldata
->arg
,
3158 .rpc_resp
= &calldata
->res
,
3159 .rpc_cred
= calldata
->lsp
->ls_state
->owner
->so_cred
,
3162 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3164 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3165 /* Note: exit _without_ running nfs4_locku_done */
3166 task
->tk_action
= NULL
;
3169 calldata
->timestamp
= jiffies
;
3170 rpc_call_setup(task
, &msg
, 0);
3173 static const struct rpc_call_ops nfs4_locku_ops
= {
3174 .rpc_call_prepare
= nfs4_locku_prepare
,
3175 .rpc_call_done
= nfs4_locku_done
,
3176 .rpc_release
= nfs4_locku_release_calldata
,
3179 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3180 struct nfs_open_context
*ctx
,
3181 struct nfs4_lock_state
*lsp
,
3182 struct nfs_seqid
*seqid
)
3184 struct nfs4_unlockdata
*data
;
3186 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3188 nfs_free_seqid(seqid
);
3189 return ERR_PTR(-ENOMEM
);
3192 return rpc_run_task(NFS_CLIENT(lsp
->ls_state
->inode
), RPC_TASK_ASYNC
, &nfs4_locku_ops
, data
);
3195 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3197 struct nfs_seqid
*seqid
;
3198 struct nfs4_lock_state
*lsp
;
3199 struct rpc_task
*task
;
3202 status
= nfs4_set_lock_state(state
, request
);
3203 /* Unlock _before_ we do the RPC call */
3204 request
->fl_flags
|= FL_EXISTS
;
3205 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
)
3209 /* Is this a delegated lock? */
3210 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3212 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3213 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3217 task
= nfs4_do_unlck(request
, request
->fl_file
->private_data
, lsp
, seqid
);
3218 status
= PTR_ERR(task
);
3221 status
= nfs4_wait_for_completion_rpc_task(task
);
3227 struct nfs4_lockdata
{
3228 struct nfs_lock_args arg
;
3229 struct nfs_lock_res res
;
3230 struct nfs4_lock_state
*lsp
;
3231 struct nfs_open_context
*ctx
;
3232 struct file_lock fl
;
3233 unsigned long timestamp
;
3238 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3239 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3241 struct nfs4_lockdata
*p
;
3242 struct inode
*inode
= lsp
->ls_state
->inode
;
3243 struct nfs_server
*server
= NFS_SERVER(inode
);
3245 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3249 p
->arg
.fh
= NFS_FH(inode
);
3251 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3252 if (p
->arg
.lock_seqid
== NULL
)
3254 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3255 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3256 p
->arg
.lock_owner
.id
= lsp
->ls_id
;
3258 atomic_inc(&lsp
->ls_count
);
3259 p
->ctx
= get_nfs_open_context(ctx
);
3260 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3267 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3269 struct nfs4_lockdata
*data
= calldata
;
3270 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3271 struct nfs4_state_owner
*sp
= state
->owner
;
3272 struct rpc_message msg
= {
3273 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3274 .rpc_argp
= &data
->arg
,
3275 .rpc_resp
= &data
->res
,
3276 .rpc_cred
= sp
->so_cred
,
3279 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3281 dprintk("%s: begin!\n", __FUNCTION__
);
3282 /* Do we need to do an open_to_lock_owner? */
3283 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3284 data
->arg
.open_seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
3285 if (data
->arg
.open_seqid
== NULL
) {
3286 data
->rpc_status
= -ENOMEM
;
3287 task
->tk_action
= NULL
;
3290 data
->arg
.open_stateid
= &state
->stateid
;
3291 data
->arg
.new_lock_owner
= 1;
3293 data
->timestamp
= jiffies
;
3294 rpc_call_setup(task
, &msg
, 0);
3296 dprintk("%s: done!, ret = %d\n", __FUNCTION__
, data
->rpc_status
);
3299 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3301 struct nfs4_lockdata
*data
= calldata
;
3303 dprintk("%s: begin!\n", __FUNCTION__
);
3305 data
->rpc_status
= task
->tk_status
;
3306 if (RPC_ASSASSINATED(task
))
3308 if (data
->arg
.new_lock_owner
!= 0) {
3309 nfs_increment_open_seqid(data
->rpc_status
, data
->arg
.open_seqid
);
3310 if (data
->rpc_status
== 0)
3311 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3315 if (data
->rpc_status
== 0) {
3316 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3317 sizeof(data
->lsp
->ls_stateid
.data
));
3318 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3319 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3321 nfs_increment_lock_seqid(data
->rpc_status
, data
->arg
.lock_seqid
);
3323 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, data
->rpc_status
);
3326 static void nfs4_lock_release(void *calldata
)
3328 struct nfs4_lockdata
*data
= calldata
;
3330 dprintk("%s: begin!\n", __FUNCTION__
);
3331 if (data
->arg
.open_seqid
!= NULL
)
3332 nfs_free_seqid(data
->arg
.open_seqid
);
3333 if (data
->cancelled
!= 0) {
3334 struct rpc_task
*task
;
3335 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3336 data
->arg
.lock_seqid
);
3339 dprintk("%s: cancelling lock!\n", __FUNCTION__
);
3341 nfs_free_seqid(data
->arg
.lock_seqid
);
3342 nfs4_put_lock_state(data
->lsp
);
3343 put_nfs_open_context(data
->ctx
);
3345 dprintk("%s: done!\n", __FUNCTION__
);
3348 static const struct rpc_call_ops nfs4_lock_ops
= {
3349 .rpc_call_prepare
= nfs4_lock_prepare
,
3350 .rpc_call_done
= nfs4_lock_done
,
3351 .rpc_release
= nfs4_lock_release
,
3354 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3356 struct nfs4_lockdata
*data
;
3357 struct rpc_task
*task
;
3360 dprintk("%s: begin!\n", __FUNCTION__
);
3361 data
= nfs4_alloc_lockdata(fl
, fl
->fl_file
->private_data
,
3362 fl
->fl_u
.nfs4_fl
.owner
);
3366 data
->arg
.block
= 1;
3368 data
->arg
.reclaim
= 1;
3369 task
= rpc_run_task(NFS_CLIENT(state
->inode
), RPC_TASK_ASYNC
,
3370 &nfs4_lock_ops
, data
);
3372 return PTR_ERR(task
);
3373 ret
= nfs4_wait_for_completion_rpc_task(task
);
3375 ret
= data
->rpc_status
;
3376 if (ret
== -NFS4ERR_DENIED
)
3379 data
->cancelled
= 1;
3381 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, ret
);
3385 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
3387 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3388 struct nfs4_exception exception
= { };
3392 /* Cache the lock if possible... */
3393 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3395 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
3396 if (err
!= -NFS4ERR_DELAY
)
3398 nfs4_handle_exception(server
, err
, &exception
);
3399 } while (exception
.retry
);
3403 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
3405 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3406 struct nfs4_exception exception
= { };
3409 err
= nfs4_set_lock_state(state
, request
);
3413 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3415 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
3416 if (err
!= -NFS4ERR_DELAY
)
3418 nfs4_handle_exception(server
, err
, &exception
);
3419 } while (exception
.retry
);
3423 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3425 struct nfs_client
*clp
= state
->owner
->so_client
;
3426 unsigned char fl_flags
= request
->fl_flags
;
3429 /* Is this a delegated open? */
3430 status
= nfs4_set_lock_state(state
, request
);
3433 request
->fl_flags
|= FL_ACCESS
;
3434 status
= do_vfs_lock(request
->fl_file
, request
);
3437 down_read(&clp
->cl_sem
);
3438 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3439 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3440 /* Yes: cache locks! */
3441 down_read(&nfsi
->rwsem
);
3442 /* ...but avoid races with delegation recall... */
3443 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3444 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
3445 status
= do_vfs_lock(request
->fl_file
, request
);
3446 up_read(&nfsi
->rwsem
);
3449 up_read(&nfsi
->rwsem
);
3451 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
3454 /* Note: we always want to sleep here! */
3455 request
->fl_flags
= fl_flags
| FL_SLEEP
;
3456 if (do_vfs_lock(request
->fl_file
, request
) < 0)
3457 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __FUNCTION__
);
3459 up_read(&clp
->cl_sem
);
3461 request
->fl_flags
= fl_flags
;
3465 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3467 struct nfs4_exception exception
= { };
3471 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3472 _nfs4_proc_setlk(state
, cmd
, request
),
3474 } while (exception
.retry
);
3479 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
3481 struct nfs_open_context
*ctx
;
3482 struct nfs4_state
*state
;
3483 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
3486 /* verify open state */
3487 ctx
= (struct nfs_open_context
*)filp
->private_data
;
3490 if (request
->fl_start
< 0 || request
->fl_end
< 0)
3494 return nfs4_proc_getlk(state
, F_GETLK
, request
);
3496 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
3499 if (request
->fl_type
== F_UNLCK
)
3500 return nfs4_proc_unlck(state
, cmd
, request
);
3503 status
= nfs4_proc_setlk(state
, cmd
, request
);
3504 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
3506 timeout
= nfs4_set_lock_task_retry(timeout
);
3507 status
= -ERESTARTSYS
;
3510 } while(status
< 0);
3514 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
3516 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3517 struct nfs4_exception exception
= { };
3520 err
= nfs4_set_lock_state(state
, fl
);
3524 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
3525 if (err
!= -NFS4ERR_DELAY
)
3527 err
= nfs4_handle_exception(server
, err
, &exception
);
3528 } while (exception
.retry
);
3533 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
3535 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
3536 size_t buflen
, int flags
)
3538 struct inode
*inode
= dentry
->d_inode
;
3540 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3543 if (!S_ISREG(inode
->i_mode
) &&
3544 (!S_ISDIR(inode
->i_mode
) || inode
->i_mode
& S_ISVTX
))
3547 return nfs4_proc_set_acl(inode
, buf
, buflen
);
3550 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
3551 * and that's what we'll do for e.g. user attributes that haven't been set.
3552 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
3553 * attributes in kernel-managed attribute namespaces. */
3554 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
3557 struct inode
*inode
= dentry
->d_inode
;
3559 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3562 return nfs4_proc_get_acl(inode
, buf
, buflen
);
3565 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
3567 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
3569 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
3571 if (buf
&& buflen
< len
)
3574 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
3578 int nfs4_proc_fs_locations(struct inode
*dir
, struct qstr
*name
,
3579 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
3581 struct nfs_server
*server
= NFS_SERVER(dir
);
3583 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
3584 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
3586 struct nfs4_fs_locations_arg args
= {
3587 .dir_fh
= NFS_FH(dir
),
3592 struct rpc_message msg
= {
3593 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
3595 .rpc_resp
= fs_locations
,
3599 dprintk("%s: start\n", __FUNCTION__
);
3600 nfs_fattr_init(&fs_locations
->fattr
);
3601 fs_locations
->server
= server
;
3602 fs_locations
->nlocations
= 0;
3603 status
= rpc_call_sync(server
->client
, &msg
, 0);
3604 dprintk("%s: returned status = %d\n", __FUNCTION__
, status
);
3608 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops
= {
3609 .recover_open
= nfs4_open_reclaim
,
3610 .recover_lock
= nfs4_lock_reclaim
,
3613 struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops
= {
3614 .recover_open
= nfs4_open_expired
,
3615 .recover_lock
= nfs4_lock_expired
,
3618 static const struct inode_operations nfs4_file_inode_operations
= {
3619 .permission
= nfs_permission
,
3620 .getattr
= nfs_getattr
,
3621 .setattr
= nfs_setattr
,
3622 .getxattr
= nfs4_getxattr
,
3623 .setxattr
= nfs4_setxattr
,
3624 .listxattr
= nfs4_listxattr
,
3627 const struct nfs_rpc_ops nfs_v4_clientops
= {
3628 .version
= 4, /* protocol version */
3629 .dentry_ops
= &nfs4_dentry_operations
,
3630 .dir_inode_ops
= &nfs4_dir_inode_operations
,
3631 .file_inode_ops
= &nfs4_file_inode_operations
,
3632 .getroot
= nfs4_proc_get_root
,
3633 .getattr
= nfs4_proc_getattr
,
3634 .setattr
= nfs4_proc_setattr
,
3635 .lookupfh
= nfs4_proc_lookupfh
,
3636 .lookup
= nfs4_proc_lookup
,
3637 .access
= nfs4_proc_access
,
3638 .readlink
= nfs4_proc_readlink
,
3639 .create
= nfs4_proc_create
,
3640 .remove
= nfs4_proc_remove
,
3641 .unlink_setup
= nfs4_proc_unlink_setup
,
3642 .unlink_done
= nfs4_proc_unlink_done
,
3643 .rename
= nfs4_proc_rename
,
3644 .link
= nfs4_proc_link
,
3645 .symlink
= nfs4_proc_symlink
,
3646 .mkdir
= nfs4_proc_mkdir
,
3647 .rmdir
= nfs4_proc_remove
,
3648 .readdir
= nfs4_proc_readdir
,
3649 .mknod
= nfs4_proc_mknod
,
3650 .statfs
= nfs4_proc_statfs
,
3651 .fsinfo
= nfs4_proc_fsinfo
,
3652 .pathconf
= nfs4_proc_pathconf
,
3653 .set_capabilities
= nfs4_server_capabilities
,
3654 .decode_dirent
= nfs4_decode_dirent
,
3655 .read_setup
= nfs4_proc_read_setup
,
3656 .read_done
= nfs4_read_done
,
3657 .write_setup
= nfs4_proc_write_setup
,
3658 .write_done
= nfs4_write_done
,
3659 .commit_setup
= nfs4_proc_commit_setup
,
3660 .commit_done
= nfs4_commit_done
,
3661 .file_open
= nfs_open
,
3662 .file_release
= nfs_release
,
3663 .lock
= nfs4_proc_lock
,
3664 .clear_acl_cache
= nfs4_zap_acl_attr
,