4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/utsname.h>
40 #include <linux/delay.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/sunrpc/clnt.h>
44 #include <linux/nfs.h>
45 #include <linux/nfs4.h>
46 #include <linux/nfs_fs.h>
47 #include <linux/nfs_page.h>
48 #include <linux/smp_lock.h>
49 #include <linux/namei.h>
50 #include <linux/mount.h>
53 #include "delegation.h"
56 #define NFSDBG_FACILITY NFSDBG_PROC
58 #define NFS4_POLL_RETRY_MIN (HZ/10)
59 #define NFS4_POLL_RETRY_MAX (15*HZ)
62 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
63 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
64 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*);
65 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
);
66 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
);
67 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
);
69 /* Prevent leaks of NFSv4 errors into userland */
70 int nfs4_map_errors(int err
)
73 dprintk("%s could not handle NFSv4 error %d\n",
81 * This is our standard bitmap for GETATTR requests.
83 const u32 nfs4_fattr_bitmap
[2] = {
88 | FATTR4_WORD0_FILEID
,
90 | FATTR4_WORD1_NUMLINKS
92 | FATTR4_WORD1_OWNER_GROUP
94 | FATTR4_WORD1_SPACE_USED
95 | FATTR4_WORD1_TIME_ACCESS
96 | FATTR4_WORD1_TIME_METADATA
97 | FATTR4_WORD1_TIME_MODIFY
100 const u32 nfs4_statfs_bitmap
[2] = {
101 FATTR4_WORD0_FILES_AVAIL
102 | FATTR4_WORD0_FILES_FREE
103 | FATTR4_WORD0_FILES_TOTAL
,
104 FATTR4_WORD1_SPACE_AVAIL
105 | FATTR4_WORD1_SPACE_FREE
106 | FATTR4_WORD1_SPACE_TOTAL
109 const u32 nfs4_pathconf_bitmap
[2] = {
111 | FATTR4_WORD0_MAXNAME
,
115 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
116 | FATTR4_WORD0_MAXREAD
117 | FATTR4_WORD0_MAXWRITE
118 | FATTR4_WORD0_LEASE_TIME
,
122 const u32 nfs4_fs_locations_bitmap
[2] = {
124 | FATTR4_WORD0_CHANGE
127 | FATTR4_WORD0_FILEID
128 | FATTR4_WORD0_FS_LOCATIONS
,
130 | FATTR4_WORD1_NUMLINKS
132 | FATTR4_WORD1_OWNER_GROUP
133 | FATTR4_WORD1_RAWDEV
134 | FATTR4_WORD1_SPACE_USED
135 | FATTR4_WORD1_TIME_ACCESS
136 | FATTR4_WORD1_TIME_METADATA
137 | FATTR4_WORD1_TIME_MODIFY
138 | FATTR4_WORD1_MOUNTED_ON_FILEID
141 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
142 struct nfs4_readdir_arg
*readdir
)
146 BUG_ON(readdir
->count
< 80);
148 readdir
->cookie
= cookie
;
149 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
154 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
159 * NFSv4 servers do not return entries for '.' and '..'
160 * Therefore, we fake these entries here. We let '.'
161 * have cookie 0 and '..' have cookie 1. Note that
162 * when talking to the server, we always send cookie 0
165 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
168 *p
++ = xdr_one
; /* next */
169 *p
++ = xdr_zero
; /* cookie, first word */
170 *p
++ = xdr_one
; /* cookie, second word */
171 *p
++ = xdr_one
; /* entry len */
172 memcpy(p
, ".\0\0\0", 4); /* entry */
174 *p
++ = xdr_one
; /* bitmap length */
175 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
176 *p
++ = htonl(8); /* attribute buffer length */
177 p
= xdr_encode_hyper(p
, dentry
->d_inode
->i_ino
);
180 *p
++ = xdr_one
; /* next */
181 *p
++ = xdr_zero
; /* cookie, first word */
182 *p
++ = xdr_two
; /* cookie, second word */
183 *p
++ = xdr_two
; /* entry len */
184 memcpy(p
, "..\0\0", 4); /* entry */
186 *p
++ = xdr_one
; /* bitmap length */
187 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
188 *p
++ = htonl(8); /* attribute buffer length */
189 p
= xdr_encode_hyper(p
, dentry
->d_parent
->d_inode
->i_ino
);
191 readdir
->pgbase
= (char *)p
- (char *)start
;
192 readdir
->count
-= readdir
->pgbase
;
193 kunmap_atomic(start
, KM_USER0
);
196 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
198 struct nfs_client
*clp
= server
->nfs_client
;
199 spin_lock(&clp
->cl_lock
);
200 if (time_before(clp
->cl_last_renewal
,timestamp
))
201 clp
->cl_last_renewal
= timestamp
;
202 spin_unlock(&clp
->cl_lock
);
205 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
207 struct nfs_inode
*nfsi
= NFS_I(dir
);
209 spin_lock(&dir
->i_lock
);
210 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
211 if (cinfo
->before
== nfsi
->change_attr
&& cinfo
->atomic
)
212 nfsi
->change_attr
= cinfo
->after
;
213 spin_unlock(&dir
->i_lock
);
216 struct nfs4_opendata
{
218 struct nfs_openargs o_arg
;
219 struct nfs_openres o_res
;
220 struct nfs_open_confirmargs c_arg
;
221 struct nfs_open_confirmres c_res
;
222 struct nfs_fattr f_attr
;
223 struct nfs_fattr dir_attr
;
226 struct nfs4_state_owner
*owner
;
228 unsigned long timestamp
;
233 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
234 struct nfs4_state_owner
*sp
, int flags
,
235 const struct iattr
*attrs
)
237 struct dentry
*parent
= dget_parent(path
->dentry
);
238 struct inode
*dir
= parent
->d_inode
;
239 struct nfs_server
*server
= NFS_SERVER(dir
);
240 struct nfs4_opendata
*p
;
242 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
245 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
246 if (p
->o_arg
.seqid
== NULL
)
248 p
->path
.mnt
= mntget(path
->mnt
);
249 p
->path
.dentry
= dget(path
->dentry
);
252 atomic_inc(&sp
->so_count
);
253 p
->o_arg
.fh
= NFS_FH(dir
);
254 p
->o_arg
.open_flags
= flags
,
255 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
256 p
->o_arg
.id
= sp
->so_owner_id
.id
;
257 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
258 p
->o_arg
.server
= server
;
259 p
->o_arg
.bitmask
= server
->attr_bitmask
;
260 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
261 p
->o_res
.f_attr
= &p
->f_attr
;
262 p
->o_res
.dir_attr
= &p
->dir_attr
;
263 p
->o_res
.server
= server
;
264 nfs_fattr_init(&p
->f_attr
);
265 nfs_fattr_init(&p
->dir_attr
);
266 if (flags
& O_EXCL
) {
267 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
270 } else if (flags
& O_CREAT
) {
271 p
->o_arg
.u
.attrs
= &p
->attrs
;
272 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
274 p
->c_arg
.fh
= &p
->o_res
.fh
;
275 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
276 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
286 static void nfs4_opendata_free(struct kref
*kref
)
288 struct nfs4_opendata
*p
= container_of(kref
,
289 struct nfs4_opendata
, kref
);
291 nfs_free_seqid(p
->o_arg
.seqid
);
292 nfs4_put_state_owner(p
->owner
);
294 dput(p
->path
.dentry
);
299 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
302 kref_put(&p
->kref
, nfs4_opendata_free
);
305 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
310 rpc_clnt_sigmask(task
->tk_client
, &oldset
);
311 ret
= rpc_wait_for_completion_task(task
);
312 rpc_clnt_sigunmask(task
->tk_client
, &oldset
);
316 static inline void update_open_stateflags(struct nfs4_state
*state
, mode_t open_flags
)
318 switch (open_flags
) {
325 case FMODE_READ
|FMODE_WRITE
:
330 static void update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, int open_flags
)
332 struct inode
*inode
= state
->inode
;
334 open_flags
&= (FMODE_READ
|FMODE_WRITE
);
335 /* Protect against nfs4_find_state_byowner() */
336 spin_lock(&state
->owner
->so_lock
);
337 spin_lock(&inode
->i_lock
);
338 memcpy(&state
->stateid
, stateid
, sizeof(state
->stateid
));
339 update_open_stateflags(state
, open_flags
);
340 nfs4_state_set_mode_locked(state
, state
->state
| open_flags
);
341 spin_unlock(&inode
->i_lock
);
342 spin_unlock(&state
->owner
->so_lock
);
345 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
348 struct nfs4_state
*state
= NULL
;
350 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
352 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
355 state
= nfs4_get_open_state(inode
, data
->owner
);
358 update_open_stateid(state
, &data
->o_res
.stateid
, data
->o_arg
.open_flags
);
359 if (data
->o_res
.delegation_type
!= 0) {
360 struct nfs_inode
*nfsi
= NFS_I(inode
);
361 int delegation_flags
= 0;
363 if (nfsi
->delegation
)
364 delegation_flags
= nfsi
->delegation
->flags
;
365 if (!(delegation_flags
& NFS_DELEGATION_NEED_RECLAIM
))
366 nfs_inode_set_delegation(state
->inode
,
367 data
->owner
->so_cred
,
370 nfs_inode_reclaim_delegation(state
->inode
,
371 data
->owner
->so_cred
,
380 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
382 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
383 struct nfs_open_context
*ctx
;
385 spin_lock(&state
->inode
->i_lock
);
386 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
387 if (ctx
->state
!= state
)
389 get_nfs_open_context(ctx
);
390 spin_unlock(&state
->inode
->i_lock
);
393 spin_unlock(&state
->inode
->i_lock
);
394 return ERR_PTR(-ENOENT
);
397 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, mode_t openflags
, nfs4_stateid
*stateid
)
401 opendata
->o_arg
.open_flags
= openflags
;
402 ret
= _nfs4_proc_open(opendata
);
405 memcpy(stateid
->data
, opendata
->o_res
.stateid
.data
,
406 sizeof(stateid
->data
));
410 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
412 nfs4_stateid stateid
;
413 struct nfs4_state
*newstate
;
418 /* memory barrier prior to reading state->n_* */
420 if (state
->n_rdwr
!= 0) {
421 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &stateid
);
424 mode
|= FMODE_READ
|FMODE_WRITE
;
425 if (opendata
->o_res
.delegation_type
!= 0)
426 delegation
= opendata
->o_res
.delegation_type
;
429 if (state
->n_wronly
!= 0) {
430 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &stateid
);
434 if (opendata
->o_res
.delegation_type
!= 0)
435 delegation
= opendata
->o_res
.delegation_type
;
438 if (state
->n_rdonly
!= 0) {
439 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &stateid
);
444 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
447 if (opendata
->o_res
.delegation_type
== 0)
448 opendata
->o_res
.delegation_type
= delegation
;
449 opendata
->o_arg
.open_flags
|= mode
;
450 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
451 if (newstate
!= NULL
)
452 nfs4_close_state(&opendata
->path
, newstate
, opendata
->o_arg
.open_flags
);
453 if (newstate
!= state
)
460 * reclaim state on the server after a reboot.
462 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
464 struct nfs_delegation
*delegation
= NFS_I(state
->inode
)->delegation
;
465 struct nfs4_opendata
*opendata
;
466 int delegation_type
= 0;
469 if (delegation
!= NULL
) {
470 if (!(delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)) {
471 memcpy(&state
->stateid
, &delegation
->stateid
,
472 sizeof(state
->stateid
));
473 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
476 delegation_type
= delegation
->type
;
478 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, NULL
);
479 if (opendata
== NULL
)
481 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
482 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
483 nfs_copy_fh(&opendata
->o_res
.fh
, opendata
->o_arg
.fh
);
484 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
485 status
= nfs4_open_recover(opendata
, state
);
486 nfs4_opendata_put(opendata
);
490 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
492 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
493 struct nfs4_exception exception
= { };
496 err
= _nfs4_do_open_reclaim(ctx
, state
);
497 if (err
!= -NFS4ERR_DELAY
)
499 nfs4_handle_exception(server
, err
, &exception
);
500 } while (exception
.retry
);
504 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
506 struct nfs_open_context
*ctx
;
509 ctx
= nfs4_state_find_open_context(state
);
512 ret
= nfs4_do_open_reclaim(ctx
, state
);
513 put_nfs_open_context(ctx
);
517 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
519 struct nfs4_state_owner
*sp
= state
->owner
;
520 struct nfs4_opendata
*opendata
;
523 if (!test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
525 opendata
= nfs4_opendata_alloc(&ctx
->path
, sp
, 0, NULL
);
526 if (opendata
== NULL
)
528 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
529 memcpy(opendata
->o_arg
.u
.delegation
.data
, state
->stateid
.data
,
530 sizeof(opendata
->o_arg
.u
.delegation
.data
));
531 ret
= nfs4_open_recover(opendata
, state
);
532 nfs4_opendata_put(opendata
);
536 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
538 struct nfs4_exception exception
= { };
539 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
542 err
= _nfs4_open_delegation_recall(ctx
, state
);
546 case -NFS4ERR_STALE_CLIENTID
:
547 case -NFS4ERR_STALE_STATEID
:
548 case -NFS4ERR_EXPIRED
:
549 /* Don't recall a delegation if it was lost */
550 nfs4_schedule_state_recovery(server
->nfs_client
);
553 err
= nfs4_handle_exception(server
, err
, &exception
);
554 } while (exception
.retry
);
558 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
560 struct nfs4_opendata
*data
= calldata
;
561 struct rpc_message msg
= {
562 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
563 .rpc_argp
= &data
->c_arg
,
564 .rpc_resp
= &data
->c_res
,
565 .rpc_cred
= data
->owner
->so_cred
,
567 data
->timestamp
= jiffies
;
568 rpc_call_setup(task
, &msg
, 0);
571 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
573 struct nfs4_opendata
*data
= calldata
;
575 data
->rpc_status
= task
->tk_status
;
576 if (RPC_ASSASSINATED(task
))
578 if (data
->rpc_status
== 0) {
579 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
580 sizeof(data
->o_res
.stateid
.data
));
581 renew_lease(data
->o_res
.server
, data
->timestamp
);
583 nfs_increment_open_seqid(data
->rpc_status
, data
->c_arg
.seqid
);
584 nfs_confirm_seqid(&data
->owner
->so_seqid
, data
->rpc_status
);
587 static void nfs4_open_confirm_release(void *calldata
)
589 struct nfs4_opendata
*data
= calldata
;
590 struct nfs4_state
*state
= NULL
;
592 /* If this request hasn't been cancelled, do nothing */
593 if (data
->cancelled
== 0)
595 /* In case of error, no cleanup! */
596 if (data
->rpc_status
!= 0)
598 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
599 state
= nfs4_opendata_to_nfs4_state(data
);
601 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
603 nfs4_opendata_put(data
);
606 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
607 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
608 .rpc_call_done
= nfs4_open_confirm_done
,
609 .rpc_release
= nfs4_open_confirm_release
,
613 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
615 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
617 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
618 struct rpc_task
*task
;
621 kref_get(&data
->kref
);
623 * If rpc_run_task() ends up calling ->rpc_release(), we
624 * want to ensure that it takes the 'error' code path.
626 data
->rpc_status
= -ENOMEM
;
627 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_confirm_ops
, data
);
629 return PTR_ERR(task
);
630 status
= nfs4_wait_for_completion_rpc_task(task
);
635 status
= data
->rpc_status
;
640 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
642 struct nfs4_opendata
*data
= calldata
;
643 struct nfs4_state_owner
*sp
= data
->owner
;
644 struct rpc_message msg
= {
645 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
646 .rpc_argp
= &data
->o_arg
,
647 .rpc_resp
= &data
->o_res
,
648 .rpc_cred
= sp
->so_cred
,
651 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
653 /* Update sequence id. */
654 data
->o_arg
.id
= sp
->so_owner_id
.id
;
655 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
656 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
657 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
658 data
->timestamp
= jiffies
;
659 rpc_call_setup(task
, &msg
, 0);
662 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
664 struct nfs4_opendata
*data
= calldata
;
666 data
->rpc_status
= task
->tk_status
;
667 if (RPC_ASSASSINATED(task
))
669 if (task
->tk_status
== 0) {
670 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
674 data
->rpc_status
= -ELOOP
;
677 data
->rpc_status
= -EISDIR
;
680 data
->rpc_status
= -ENOTDIR
;
682 renew_lease(data
->o_res
.server
, data
->timestamp
);
684 nfs_increment_open_seqid(data
->rpc_status
, data
->o_arg
.seqid
);
687 static void nfs4_open_release(void *calldata
)
689 struct nfs4_opendata
*data
= calldata
;
690 struct nfs4_state
*state
= NULL
;
692 /* If this request hasn't been cancelled, do nothing */
693 if (data
->cancelled
== 0)
695 /* In case of error, no cleanup! */
696 if (data
->rpc_status
!= 0)
698 /* In case we need an open_confirm, no cleanup! */
699 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
701 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
702 state
= nfs4_opendata_to_nfs4_state(data
);
704 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
706 nfs4_opendata_put(data
);
709 static const struct rpc_call_ops nfs4_open_ops
= {
710 .rpc_call_prepare
= nfs4_open_prepare
,
711 .rpc_call_done
= nfs4_open_done
,
712 .rpc_release
= nfs4_open_release
,
716 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
718 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
720 struct inode
*dir
= data
->dir
->d_inode
;
721 struct nfs_server
*server
= NFS_SERVER(dir
);
722 struct nfs_openargs
*o_arg
= &data
->o_arg
;
723 struct nfs_openres
*o_res
= &data
->o_res
;
724 struct rpc_task
*task
;
727 kref_get(&data
->kref
);
729 * If rpc_run_task() ends up calling ->rpc_release(), we
730 * want to ensure that it takes the 'error' code path.
732 data
->rpc_status
= -ENOMEM
;
733 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_ops
, data
);
735 return PTR_ERR(task
);
736 status
= nfs4_wait_for_completion_rpc_task(task
);
741 status
= data
->rpc_status
;
746 if (o_arg
->open_flags
& O_CREAT
) {
747 update_changeattr(dir
, &o_res
->cinfo
);
748 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
750 nfs_refresh_inode(dir
, o_res
->dir_attr
);
751 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
752 status
= _nfs4_proc_open_confirm(data
);
756 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
757 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
758 return server
->nfs_client
->rpc_ops
->getattr(server
, &o_res
->fh
, o_res
->f_attr
);
762 static int _nfs4_do_access(struct inode
*inode
, struct rpc_cred
*cred
, int openflags
)
764 struct nfs_access_entry cache
;
768 if (openflags
& FMODE_READ
)
770 if (openflags
& FMODE_WRITE
)
772 if (openflags
& FMODE_EXEC
)
774 status
= nfs_access_get_cached(inode
, cred
, &cache
);
778 /* Be clever: ask server to check for all possible rights */
779 cache
.mask
= MAY_EXEC
| MAY_WRITE
| MAY_READ
;
781 cache
.jiffies
= jiffies
;
782 status
= _nfs4_proc_access(inode
, &cache
);
785 nfs_access_add_cache(inode
, &cache
);
787 if ((cache
.mask
& mask
) == mask
)
792 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
794 struct nfs_client
*clp
= server
->nfs_client
;
798 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
801 if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
))
803 nfs4_schedule_state_recovery(clp
);
810 * reclaim state on the server after a network partition.
811 * Assumes caller holds the appropriate lock
813 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
815 struct inode
*inode
= state
->inode
;
816 struct nfs_delegation
*delegation
= NFS_I(inode
)->delegation
;
817 struct nfs4_opendata
*opendata
;
818 int openflags
= state
->state
& (FMODE_READ
|FMODE_WRITE
);
821 if (delegation
!= NULL
&& !(delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)) {
822 ret
= _nfs4_do_access(inode
, ctx
->cred
, openflags
);
825 memcpy(&state
->stateid
, &delegation
->stateid
, sizeof(state
->stateid
));
826 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
829 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, openflags
, NULL
);
830 if (opendata
== NULL
)
832 ret
= nfs4_open_recover(opendata
, state
);
833 if (ret
== -ESTALE
) {
834 /* Invalidate the state owner so we don't ever use it again */
835 nfs4_drop_state_owner(state
->owner
);
836 d_drop(ctx
->path
.dentry
);
838 nfs4_opendata_put(opendata
);
842 static inline int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
844 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
845 struct nfs4_exception exception
= { };
849 err
= _nfs4_open_expired(ctx
, state
);
850 if (err
== -NFS4ERR_DELAY
)
851 nfs4_handle_exception(server
, err
, &exception
);
852 } while (exception
.retry
);
856 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
858 struct nfs_open_context
*ctx
;
861 ctx
= nfs4_state_find_open_context(state
);
864 ret
= nfs4_do_open_expired(ctx
, state
);
865 put_nfs_open_context(ctx
);
870 * Returns a referenced nfs4_state if there is an open delegation on the file
872 static int _nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
874 struct nfs_delegation
*delegation
;
875 struct nfs_server
*server
= NFS_SERVER(inode
);
876 struct nfs_client
*clp
= server
->nfs_client
;
877 struct nfs_inode
*nfsi
= NFS_I(inode
);
878 struct nfs4_state_owner
*sp
= NULL
;
879 struct nfs4_state
*state
= NULL
;
880 int open_flags
= flags
& (FMODE_READ
|FMODE_WRITE
);
884 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
885 dprintk("%s: nfs4_get_state_owner failed!\n", __FUNCTION__
);
888 err
= nfs4_recover_expired_lease(server
);
890 goto out_put_state_owner
;
891 /* Protect against reboot recovery - NOTE ORDER! */
892 down_read(&clp
->cl_sem
);
893 /* Protect against delegation recall */
894 down_read(&nfsi
->rwsem
);
895 delegation
= NFS_I(inode
)->delegation
;
897 if (delegation
== NULL
|| (delegation
->type
& open_flags
) != open_flags
)
900 state
= nfs4_get_open_state(inode
, sp
);
905 if ((state
->state
& open_flags
) == open_flags
) {
906 spin_lock(&inode
->i_lock
);
907 update_open_stateflags(state
, open_flags
);
908 spin_unlock(&inode
->i_lock
);
910 } else if (state
->state
!= 0)
911 goto out_put_open_state
;
914 err
= _nfs4_do_access(inode
, cred
, open_flags
);
917 goto out_put_open_state
;
918 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
919 update_open_stateid(state
, &delegation
->stateid
, open_flags
);
921 nfs4_put_state_owner(sp
);
922 up_read(&nfsi
->rwsem
);
923 up_read(&clp
->cl_sem
);
927 nfs4_put_open_state(state
);
929 up_read(&nfsi
->rwsem
);
930 up_read(&clp
->cl_sem
);
932 nfs_inode_return_delegation(inode
);
934 nfs4_put_state_owner(sp
);
938 static struct nfs4_state
*nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
)
940 struct nfs4_exception exception
= { };
941 struct nfs4_state
*res
= ERR_PTR(-EIO
);
945 err
= _nfs4_open_delegated(inode
, flags
, cred
, &res
);
948 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(inode
),
950 } while (exception
.retry
);
955 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
956 * fields corresponding to attributes that were used to store the verifier.
957 * Make sure we clobber those fields in the later setattr call
959 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
961 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
962 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
963 sattr
->ia_valid
|= ATTR_ATIME
;
965 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
966 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
967 sattr
->ia_valid
|= ATTR_MTIME
;
971 * Returns a referenced nfs4_state
973 static int _nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
975 struct nfs4_state_owner
*sp
;
976 struct nfs4_state
*state
= NULL
;
977 struct nfs_server
*server
= NFS_SERVER(dir
);
978 struct nfs_client
*clp
= server
->nfs_client
;
979 struct nfs4_opendata
*opendata
;
982 /* Protect against reboot recovery conflicts */
984 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
985 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
988 status
= nfs4_recover_expired_lease(server
);
990 goto err_put_state_owner
;
991 down_read(&clp
->cl_sem
);
993 opendata
= nfs4_opendata_alloc(path
, sp
, flags
, sattr
);
994 if (opendata
== NULL
)
995 goto err_release_rwsem
;
997 status
= _nfs4_proc_open(opendata
);
999 goto err_opendata_put
;
1001 if (opendata
->o_arg
.open_flags
& O_EXCL
)
1002 nfs4_exclusive_attrset(opendata
, sattr
);
1005 state
= nfs4_opendata_to_nfs4_state(opendata
);
1007 goto err_opendata_put
;
1008 nfs4_opendata_put(opendata
);
1009 nfs4_put_state_owner(sp
);
1010 up_read(&clp
->cl_sem
);
1014 nfs4_opendata_put(opendata
);
1016 up_read(&clp
->cl_sem
);
1017 err_put_state_owner
:
1018 nfs4_put_state_owner(sp
);
1025 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1027 struct nfs4_exception exception
= { };
1028 struct nfs4_state
*res
;
1032 status
= _nfs4_do_open(dir
, path
, flags
, sattr
, cred
, &res
);
1035 /* NOTE: BAD_SEQID means the server and client disagree about the
1036 * book-keeping w.r.t. state-changing operations
1037 * (OPEN/CLOSE/LOCK/LOCKU...)
1038 * It is actually a sign of a bug on the client or on the server.
1040 * If we receive a BAD_SEQID error in the particular case of
1041 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1042 * have unhashed the old state_owner for us, and that we can
1043 * therefore safely retry using a new one. We should still warn
1044 * the user though...
1046 if (status
== -NFS4ERR_BAD_SEQID
) {
1047 printk(KERN_WARNING
"NFS: v4 server returned a bad sequence-id error!\n");
1048 exception
.retry
= 1;
1052 * BAD_STATEID on OPEN means that the server cancelled our
1053 * state before it received the OPEN_CONFIRM.
1054 * Recover by retrying the request as per the discussion
1055 * on Page 181 of RFC3530.
1057 if (status
== -NFS4ERR_BAD_STATEID
) {
1058 exception
.retry
= 1;
1061 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1062 status
, &exception
));
1063 } while (exception
.retry
);
1067 static int _nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1068 struct iattr
*sattr
, struct nfs4_state
*state
)
1070 struct nfs_server
*server
= NFS_SERVER(inode
);
1071 struct nfs_setattrargs arg
= {
1072 .fh
= NFS_FH(inode
),
1075 .bitmask
= server
->attr_bitmask
,
1077 struct nfs_setattrres res
= {
1081 struct rpc_message msg
= {
1082 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1086 unsigned long timestamp
= jiffies
;
1089 nfs_fattr_init(fattr
);
1091 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1092 /* Use that stateid */
1093 } else if (state
!= NULL
) {
1094 msg
.rpc_cred
= state
->owner
->so_cred
;
1095 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1097 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1099 status
= rpc_call_sync(server
->client
, &msg
, 0);
1100 if (status
== 0 && state
!= NULL
)
1101 renew_lease(server
, timestamp
);
1105 static int nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1106 struct iattr
*sattr
, struct nfs4_state
*state
)
1108 struct nfs_server
*server
= NFS_SERVER(inode
);
1109 struct nfs4_exception exception
= { };
1112 err
= nfs4_handle_exception(server
,
1113 _nfs4_do_setattr(inode
, fattr
, sattr
, state
),
1115 } while (exception
.retry
);
1119 struct nfs4_closedata
{
1121 struct inode
*inode
;
1122 struct nfs4_state
*state
;
1123 struct nfs_closeargs arg
;
1124 struct nfs_closeres res
;
1125 struct nfs_fattr fattr
;
1126 unsigned long timestamp
;
1129 static void nfs4_free_closedata(void *data
)
1131 struct nfs4_closedata
*calldata
= data
;
1132 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1134 nfs4_put_open_state(calldata
->state
);
1135 nfs_free_seqid(calldata
->arg
.seqid
);
1136 nfs4_put_state_owner(sp
);
1137 dput(calldata
->path
.dentry
);
1138 mntput(calldata
->path
.mnt
);
1142 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1144 struct nfs4_closedata
*calldata
= data
;
1145 struct nfs4_state
*state
= calldata
->state
;
1146 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1148 if (RPC_ASSASSINATED(task
))
1150 /* hmm. we are done with the inode, and in the process of freeing
1151 * the state_owner. we keep this around to process errors
1153 nfs_increment_open_seqid(task
->tk_status
, calldata
->arg
.seqid
);
1154 switch (task
->tk_status
) {
1156 memcpy(&state
->stateid
, &calldata
->res
.stateid
,
1157 sizeof(state
->stateid
));
1158 renew_lease(server
, calldata
->timestamp
);
1160 case -NFS4ERR_STALE_STATEID
:
1161 case -NFS4ERR_EXPIRED
:
1164 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
1165 rpc_restart_call(task
);
1169 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1172 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1174 struct nfs4_closedata
*calldata
= data
;
1175 struct nfs4_state
*state
= calldata
->state
;
1176 struct rpc_message msg
= {
1177 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1178 .rpc_argp
= &calldata
->arg
,
1179 .rpc_resp
= &calldata
->res
,
1180 .rpc_cred
= state
->owner
->so_cred
,
1182 int mode
= 0, old_mode
;
1184 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1186 /* Recalculate the new open mode in case someone reopened the file
1187 * while we were waiting in line to be scheduled.
1189 spin_lock(&state
->owner
->so_lock
);
1190 spin_lock(&calldata
->inode
->i_lock
);
1191 mode
= old_mode
= state
->state
;
1192 if (state
->n_rdwr
== 0) {
1193 if (state
->n_rdonly
== 0)
1194 mode
&= ~FMODE_READ
;
1195 if (state
->n_wronly
== 0)
1196 mode
&= ~FMODE_WRITE
;
1198 nfs4_state_set_mode_locked(state
, mode
);
1199 spin_unlock(&calldata
->inode
->i_lock
);
1200 spin_unlock(&state
->owner
->so_lock
);
1201 if (mode
== old_mode
|| test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
1202 /* Note: exit _without_ calling nfs4_close_done */
1203 task
->tk_action
= NULL
;
1206 nfs_fattr_init(calldata
->res
.fattr
);
1208 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1209 calldata
->arg
.open_flags
= mode
;
1210 calldata
->timestamp
= jiffies
;
1211 rpc_call_setup(task
, &msg
, 0);
1214 static const struct rpc_call_ops nfs4_close_ops
= {
1215 .rpc_call_prepare
= nfs4_close_prepare
,
1216 .rpc_call_done
= nfs4_close_done
,
1217 .rpc_release
= nfs4_free_closedata
,
1221 * It is possible for data to be read/written from a mem-mapped file
1222 * after the sys_close call (which hits the vfs layer as a flush).
1223 * This means that we can't safely call nfsv4 close on a file until
1224 * the inode is cleared. This in turn means that we are not good
1225 * NFSv4 citizens - we do not indicate to the server to update the file's
1226 * share state even when we are done with one of the three share
1227 * stateid's in the inode.
1229 * NOTE: Caller must be holding the sp->so_owner semaphore!
1231 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
)
1233 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1234 struct nfs4_closedata
*calldata
;
1235 struct nfs4_state_owner
*sp
= state
->owner
;
1236 struct rpc_task
*task
;
1237 int status
= -ENOMEM
;
1239 calldata
= kmalloc(sizeof(*calldata
), GFP_KERNEL
);
1240 if (calldata
== NULL
)
1242 calldata
->inode
= state
->inode
;
1243 calldata
->state
= state
;
1244 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1245 calldata
->arg
.stateid
= &state
->stateid
;
1246 /* Serialization for the sequence id */
1247 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1248 if (calldata
->arg
.seqid
== NULL
)
1249 goto out_free_calldata
;
1250 calldata
->arg
.bitmask
= server
->attr_bitmask
;
1251 calldata
->res
.fattr
= &calldata
->fattr
;
1252 calldata
->res
.server
= server
;
1253 calldata
->path
.mnt
= mntget(path
->mnt
);
1254 calldata
->path
.dentry
= dget(path
->dentry
);
1256 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_close_ops
, calldata
);
1258 return PTR_ERR(task
);
1264 nfs4_put_open_state(state
);
1265 nfs4_put_state_owner(sp
);
1269 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
)
1274 /* If the open_intent is for execute, we have an extra check to make */
1275 if (nd
->intent
.open
.flags
& FMODE_EXEC
) {
1276 ret
= _nfs4_do_access(state
->inode
,
1277 state
->owner
->so_cred
,
1278 nd
->intent
.open
.flags
);
1282 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1283 if (!IS_ERR(filp
)) {
1284 struct nfs_open_context
*ctx
;
1285 ctx
= (struct nfs_open_context
*)filp
->private_data
;
1289 ret
= PTR_ERR(filp
);
1291 nfs4_close_state(path
, state
, nd
->intent
.open
.flags
);
1296 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1298 struct path path
= {
1303 struct rpc_cred
*cred
;
1304 struct nfs4_state
*state
;
1307 if (nd
->flags
& LOOKUP_CREATE
) {
1308 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1309 attr
.ia_valid
= ATTR_MODE
;
1310 if (!IS_POSIXACL(dir
))
1311 attr
.ia_mode
&= ~current
->fs
->umask
;
1314 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1317 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1319 return (struct dentry
*)cred
;
1320 state
= nfs4_do_open(dir
, &path
, nd
->intent
.open
.flags
, &attr
, cred
);
1322 if (IS_ERR(state
)) {
1323 if (PTR_ERR(state
) == -ENOENT
)
1324 d_add(dentry
, NULL
);
1325 return (struct dentry
*)state
;
1327 res
= d_add_unique(dentry
, igrab(state
->inode
));
1330 nfs4_intent_set_file(nd
, &path
, state
);
1335 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1337 struct path path
= {
1341 struct rpc_cred
*cred
;
1342 struct nfs4_state
*state
;
1344 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1346 return PTR_ERR(cred
);
1347 state
= nfs4_open_delegated(dentry
->d_inode
, openflags
, cred
);
1349 state
= nfs4_do_open(dir
, &path
, openflags
, NULL
, cred
);
1351 if (IS_ERR(state
)) {
1352 switch (PTR_ERR(state
)) {
1358 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1364 if (state
->inode
== dentry
->d_inode
) {
1365 nfs4_intent_set_file(nd
, &path
, state
);
1368 nfs4_close_state(&path
, state
, openflags
);
1375 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1377 struct nfs4_server_caps_res res
= {};
1378 struct rpc_message msg
= {
1379 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1380 .rpc_argp
= fhandle
,
1385 status
= rpc_call_sync(server
->client
, &msg
, 0);
1387 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
1388 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
1389 server
->caps
|= NFS_CAP_ACLS
;
1390 if (res
.has_links
!= 0)
1391 server
->caps
|= NFS_CAP_HARDLINKS
;
1392 if (res
.has_symlinks
!= 0)
1393 server
->caps
|= NFS_CAP_SYMLINKS
;
1394 server
->acl_bitmask
= res
.acl_bitmask
;
1399 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1401 struct nfs4_exception exception
= { };
1404 err
= nfs4_handle_exception(server
,
1405 _nfs4_server_capabilities(server
, fhandle
),
1407 } while (exception
.retry
);
1411 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1412 struct nfs_fsinfo
*info
)
1414 struct nfs4_lookup_root_arg args
= {
1415 .bitmask
= nfs4_fattr_bitmap
,
1417 struct nfs4_lookup_res res
= {
1419 .fattr
= info
->fattr
,
1422 struct rpc_message msg
= {
1423 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
1427 nfs_fattr_init(info
->fattr
);
1428 return rpc_call_sync(server
->client
, &msg
, 0);
1431 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1432 struct nfs_fsinfo
*info
)
1434 struct nfs4_exception exception
= { };
1437 err
= nfs4_handle_exception(server
,
1438 _nfs4_lookup_root(server
, fhandle
, info
),
1440 } while (exception
.retry
);
1445 * get the file handle for the "/" directory on the server
1447 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1448 struct nfs_fsinfo
*info
)
1452 status
= nfs4_lookup_root(server
, fhandle
, info
);
1454 status
= nfs4_server_capabilities(server
, fhandle
);
1456 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
1457 return nfs4_map_errors(status
);
1461 * Get locations and (maybe) other attributes of a referral.
1462 * Note that we'll actually follow the referral later when
1463 * we detect fsid mismatch in inode revalidation
1465 static int nfs4_get_referral(struct inode
*dir
, struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
1467 int status
= -ENOMEM
;
1468 struct page
*page
= NULL
;
1469 struct nfs4_fs_locations
*locations
= NULL
;
1471 page
= alloc_page(GFP_KERNEL
);
1474 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
1475 if (locations
== NULL
)
1478 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
1481 /* Make sure server returned a different fsid for the referral */
1482 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
1483 dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__
, name
->name
);
1488 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
1489 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
1491 fattr
->mode
= S_IFDIR
;
1492 memset(fhandle
, 0, sizeof(struct nfs_fh
));
1501 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1503 struct nfs4_getattr_arg args
= {
1505 .bitmask
= server
->attr_bitmask
,
1507 struct nfs4_getattr_res res
= {
1511 struct rpc_message msg
= {
1512 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
1517 nfs_fattr_init(fattr
);
1518 return rpc_call_sync(server
->client
, &msg
, 0);
1521 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1523 struct nfs4_exception exception
= { };
1526 err
= nfs4_handle_exception(server
,
1527 _nfs4_proc_getattr(server
, fhandle
, fattr
),
1529 } while (exception
.retry
);
1534 * The file is not closed if it is opened due to the a request to change
1535 * the size of the file. The open call will not be needed once the
1536 * VFS layer lookup-intents are implemented.
1538 * Close is called when the inode is destroyed.
1539 * If we haven't opened the file for O_WRONLY, we
1540 * need to in the size_change case to obtain a stateid.
1543 * Because OPEN is always done by name in nfsv4, it is
1544 * possible that we opened a different file by the same
1545 * name. We can recognize this race condition, but we
1546 * can't do anything about it besides returning an error.
1548 * This will be fixed with VFS changes (lookup-intent).
1551 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
1552 struct iattr
*sattr
)
1554 struct rpc_cred
*cred
;
1555 struct inode
*inode
= dentry
->d_inode
;
1556 struct nfs_open_context
*ctx
;
1557 struct nfs4_state
*state
= NULL
;
1560 nfs_fattr_init(fattr
);
1562 cred
= rpcauth_lookupcred(NFS_CLIENT(inode
)->cl_auth
, 0);
1564 return PTR_ERR(cred
);
1566 /* Search for an existing open(O_WRITE) file */
1567 ctx
= nfs_find_open_context(inode
, cred
, FMODE_WRITE
);
1571 status
= nfs4_do_setattr(inode
, fattr
, sattr
, state
);
1573 nfs_setattr_update_inode(inode
, sattr
);
1575 put_nfs_open_context(ctx
);
1580 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1581 struct qstr
*name
, struct nfs_fh
*fhandle
,
1582 struct nfs_fattr
*fattr
)
1585 struct nfs4_lookup_arg args
= {
1586 .bitmask
= server
->attr_bitmask
,
1590 struct nfs4_lookup_res res
= {
1595 struct rpc_message msg
= {
1596 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1601 nfs_fattr_init(fattr
);
1603 dprintk("NFS call lookupfh %s\n", name
->name
);
1604 status
= rpc_call_sync(server
->client
, &msg
, 0);
1605 dprintk("NFS reply lookupfh: %d\n", status
);
1609 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1610 struct qstr
*name
, struct nfs_fh
*fhandle
,
1611 struct nfs_fattr
*fattr
)
1613 struct nfs4_exception exception
= { };
1616 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
1618 if (err
== -NFS4ERR_MOVED
) {
1622 err
= nfs4_handle_exception(server
, err
, &exception
);
1623 } while (exception
.retry
);
1627 static int _nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
1628 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1632 dprintk("NFS call lookup %s\n", name
->name
);
1633 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
1634 if (status
== -NFS4ERR_MOVED
)
1635 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
1636 dprintk("NFS reply lookup: %d\n", status
);
1640 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1642 struct nfs4_exception exception
= { };
1645 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1646 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
1648 } while (exception
.retry
);
1652 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1654 struct nfs4_accessargs args
= {
1655 .fh
= NFS_FH(inode
),
1657 struct nfs4_accessres res
= { 0 };
1658 struct rpc_message msg
= {
1659 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
1662 .rpc_cred
= entry
->cred
,
1664 int mode
= entry
->mask
;
1668 * Determine which access bits we want to ask for...
1670 if (mode
& MAY_READ
)
1671 args
.access
|= NFS4_ACCESS_READ
;
1672 if (S_ISDIR(inode
->i_mode
)) {
1673 if (mode
& MAY_WRITE
)
1674 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
1675 if (mode
& MAY_EXEC
)
1676 args
.access
|= NFS4_ACCESS_LOOKUP
;
1678 if (mode
& MAY_WRITE
)
1679 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
1680 if (mode
& MAY_EXEC
)
1681 args
.access
|= NFS4_ACCESS_EXECUTE
;
1683 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1686 if (res
.access
& NFS4_ACCESS_READ
)
1687 entry
->mask
|= MAY_READ
;
1688 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
1689 entry
->mask
|= MAY_WRITE
;
1690 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
1691 entry
->mask
|= MAY_EXEC
;
1696 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1698 struct nfs4_exception exception
= { };
1701 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1702 _nfs4_proc_access(inode
, entry
),
1704 } while (exception
.retry
);
1709 * TODO: For the time being, we don't try to get any attributes
1710 * along with any of the zero-copy operations READ, READDIR,
1713 * In the case of the first three, we want to put the GETATTR
1714 * after the read-type operation -- this is because it is hard
1715 * to predict the length of a GETATTR response in v4, and thus
1716 * align the READ data correctly. This means that the GETATTR
1717 * may end up partially falling into the page cache, and we should
1718 * shift it into the 'tail' of the xdr_buf before processing.
1719 * To do this efficiently, we need to know the total length
1720 * of data received, which doesn't seem to be available outside
1723 * In the case of WRITE, we also want to put the GETATTR after
1724 * the operation -- in this case because we want to make sure
1725 * we get the post-operation mtime and size. This means that
1726 * we can't use xdr_encode_pages() as written: we need a variant
1727 * of it which would leave room in the 'tail' iovec.
1729 * Both of these changes to the XDR layer would in fact be quite
1730 * minor, but I decided to leave them for a subsequent patch.
1732 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1733 unsigned int pgbase
, unsigned int pglen
)
1735 struct nfs4_readlink args
= {
1736 .fh
= NFS_FH(inode
),
1741 struct rpc_message msg
= {
1742 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
1747 return rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1750 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1751 unsigned int pgbase
, unsigned int pglen
)
1753 struct nfs4_exception exception
= { };
1756 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1757 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
1759 } while (exception
.retry
);
1765 * We will need to arrange for the VFS layer to provide an atomic open.
1766 * Until then, this create/open method is prone to inefficiency and race
1767 * conditions due to the lookup, create, and open VFS calls from sys_open()
1768 * placed on the wire.
1770 * Given the above sorry state of affairs, I'm simply sending an OPEN.
1771 * The file will be opened again in the subsequent VFS open call
1772 * (nfs4_proc_file_open).
1774 * The open for read will just hang around to be used by any process that
1775 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
1779 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
1780 int flags
, struct nameidata
*nd
)
1782 struct path path
= {
1786 struct nfs4_state
*state
;
1787 struct rpc_cred
*cred
;
1790 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1792 status
= PTR_ERR(cred
);
1795 state
= nfs4_do_open(dir
, &path
, flags
, sattr
, cred
);
1797 if (IS_ERR(state
)) {
1798 status
= PTR_ERR(state
);
1801 d_instantiate(dentry
, igrab(state
->inode
));
1802 if (flags
& O_EXCL
) {
1803 struct nfs_fattr fattr
;
1804 status
= nfs4_do_setattr(state
->inode
, &fattr
, sattr
, state
);
1806 nfs_setattr_update_inode(state
->inode
, sattr
);
1807 nfs_post_op_update_inode(state
->inode
, &fattr
);
1809 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
1810 status
= nfs4_intent_set_file(nd
, &path
, state
);
1812 nfs4_close_state(&path
, state
, flags
);
1817 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1819 struct nfs_server
*server
= NFS_SERVER(dir
);
1820 struct nfs4_remove_arg args
= {
1823 .bitmask
= server
->attr_bitmask
,
1825 struct nfs_fattr dir_attr
;
1826 struct nfs4_remove_res res
= {
1828 .dir_attr
= &dir_attr
,
1830 struct rpc_message msg
= {
1831 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
1837 nfs_fattr_init(res
.dir_attr
);
1838 status
= rpc_call_sync(server
->client
, &msg
, 0);
1840 update_changeattr(dir
, &res
.cinfo
);
1841 nfs_post_op_update_inode(dir
, res
.dir_attr
);
1846 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1848 struct nfs4_exception exception
= { };
1851 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1852 _nfs4_proc_remove(dir
, name
),
1854 } while (exception
.retry
);
1858 struct unlink_desc
{
1859 struct nfs4_remove_arg args
;
1860 struct nfs4_remove_res res
;
1861 struct nfs_fattr dir_attr
;
1864 static int nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct dentry
*dir
,
1867 struct nfs_server
*server
= NFS_SERVER(dir
->d_inode
);
1868 struct unlink_desc
*up
;
1870 up
= kmalloc(sizeof(*up
), GFP_KERNEL
);
1874 up
->args
.fh
= NFS_FH(dir
->d_inode
);
1875 up
->args
.name
= name
;
1876 up
->args
.bitmask
= server
->attr_bitmask
;
1877 up
->res
.server
= server
;
1878 up
->res
.dir_attr
= &up
->dir_attr
;
1880 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
1881 msg
->rpc_argp
= &up
->args
;
1882 msg
->rpc_resp
= &up
->res
;
1886 static int nfs4_proc_unlink_done(struct dentry
*dir
, struct rpc_task
*task
)
1888 struct rpc_message
*msg
= &task
->tk_msg
;
1889 struct unlink_desc
*up
;
1891 if (msg
->rpc_resp
!= NULL
) {
1892 up
= container_of(msg
->rpc_resp
, struct unlink_desc
, res
);
1893 update_changeattr(dir
->d_inode
, &up
->res
.cinfo
);
1894 nfs_post_op_update_inode(dir
->d_inode
, up
->res
.dir_attr
);
1896 msg
->rpc_resp
= NULL
;
1897 msg
->rpc_argp
= NULL
;
1902 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1903 struct inode
*new_dir
, struct qstr
*new_name
)
1905 struct nfs_server
*server
= NFS_SERVER(old_dir
);
1906 struct nfs4_rename_arg arg
= {
1907 .old_dir
= NFS_FH(old_dir
),
1908 .new_dir
= NFS_FH(new_dir
),
1909 .old_name
= old_name
,
1910 .new_name
= new_name
,
1911 .bitmask
= server
->attr_bitmask
,
1913 struct nfs_fattr old_fattr
, new_fattr
;
1914 struct nfs4_rename_res res
= {
1916 .old_fattr
= &old_fattr
,
1917 .new_fattr
= &new_fattr
,
1919 struct rpc_message msg
= {
1920 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
1926 nfs_fattr_init(res
.old_fattr
);
1927 nfs_fattr_init(res
.new_fattr
);
1928 status
= rpc_call_sync(server
->client
, &msg
, 0);
1931 update_changeattr(old_dir
, &res
.old_cinfo
);
1932 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
1933 update_changeattr(new_dir
, &res
.new_cinfo
);
1934 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
1939 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1940 struct inode
*new_dir
, struct qstr
*new_name
)
1942 struct nfs4_exception exception
= { };
1945 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
1946 _nfs4_proc_rename(old_dir
, old_name
,
1949 } while (exception
.retry
);
1953 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
1955 struct nfs_server
*server
= NFS_SERVER(inode
);
1956 struct nfs4_link_arg arg
= {
1957 .fh
= NFS_FH(inode
),
1958 .dir_fh
= NFS_FH(dir
),
1960 .bitmask
= server
->attr_bitmask
,
1962 struct nfs_fattr fattr
, dir_attr
;
1963 struct nfs4_link_res res
= {
1966 .dir_attr
= &dir_attr
,
1968 struct rpc_message msg
= {
1969 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
1975 nfs_fattr_init(res
.fattr
);
1976 nfs_fattr_init(res
.dir_attr
);
1977 status
= rpc_call_sync(server
->client
, &msg
, 0);
1979 update_changeattr(dir
, &res
.cinfo
);
1980 nfs_post_op_update_inode(dir
, res
.dir_attr
);
1981 nfs_post_op_update_inode(inode
, res
.fattr
);
1987 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
1989 struct nfs4_exception exception
= { };
1992 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1993 _nfs4_proc_link(inode
, dir
, name
),
1995 } while (exception
.retry
);
1999 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2000 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2002 struct nfs_server
*server
= NFS_SERVER(dir
);
2003 struct nfs_fh fhandle
;
2004 struct nfs_fattr fattr
, dir_fattr
;
2005 struct nfs4_create_arg arg
= {
2006 .dir_fh
= NFS_FH(dir
),
2008 .name
= &dentry
->d_name
,
2011 .bitmask
= server
->attr_bitmask
,
2013 struct nfs4_create_res res
= {
2017 .dir_fattr
= &dir_fattr
,
2019 struct rpc_message msg
= {
2020 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
],
2026 if (len
> NFS4_MAXPATHLEN
)
2027 return -ENAMETOOLONG
;
2029 arg
.u
.symlink
.pages
= &page
;
2030 arg
.u
.symlink
.len
= len
;
2031 nfs_fattr_init(&fattr
);
2032 nfs_fattr_init(&dir_fattr
);
2034 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2036 update_changeattr(dir
, &res
.dir_cinfo
);
2037 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2038 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2043 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2044 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2046 struct nfs4_exception exception
= { };
2049 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2050 _nfs4_proc_symlink(dir
, dentry
, page
,
2053 } while (exception
.retry
);
2057 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2058 struct iattr
*sattr
)
2060 struct nfs_server
*server
= NFS_SERVER(dir
);
2061 struct nfs_fh fhandle
;
2062 struct nfs_fattr fattr
, dir_fattr
;
2063 struct nfs4_create_arg arg
= {
2064 .dir_fh
= NFS_FH(dir
),
2066 .name
= &dentry
->d_name
,
2069 .bitmask
= server
->attr_bitmask
,
2071 struct nfs4_create_res res
= {
2075 .dir_fattr
= &dir_fattr
,
2077 struct rpc_message msg
= {
2078 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2084 nfs_fattr_init(&fattr
);
2085 nfs_fattr_init(&dir_fattr
);
2087 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2089 update_changeattr(dir
, &res
.dir_cinfo
);
2090 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2091 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2096 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2097 struct iattr
*sattr
)
2099 struct nfs4_exception exception
= { };
2102 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2103 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2105 } while (exception
.retry
);
2109 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2110 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2112 struct inode
*dir
= dentry
->d_inode
;
2113 struct nfs4_readdir_arg args
= {
2118 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2120 struct nfs4_readdir_res res
;
2121 struct rpc_message msg
= {
2122 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2129 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__
,
2130 dentry
->d_parent
->d_name
.name
,
2131 dentry
->d_name
.name
,
2132 (unsigned long long)cookie
);
2133 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2134 res
.pgbase
= args
.pgbase
;
2135 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2137 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2138 dprintk("%s: returns %d\n", __FUNCTION__
, status
);
2142 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2143 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2145 struct nfs4_exception exception
= { };
2148 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2149 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2152 } while (exception
.retry
);
2156 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2157 struct iattr
*sattr
, dev_t rdev
)
2159 struct nfs_server
*server
= NFS_SERVER(dir
);
2161 struct nfs_fattr fattr
, dir_fattr
;
2162 struct nfs4_create_arg arg
= {
2163 .dir_fh
= NFS_FH(dir
),
2165 .name
= &dentry
->d_name
,
2167 .bitmask
= server
->attr_bitmask
,
2169 struct nfs4_create_res res
= {
2173 .dir_fattr
= &dir_fattr
,
2175 struct rpc_message msg
= {
2176 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2181 int mode
= sattr
->ia_mode
;
2183 nfs_fattr_init(&fattr
);
2184 nfs_fattr_init(&dir_fattr
);
2186 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2187 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2189 arg
.ftype
= NF4FIFO
;
2190 else if (S_ISBLK(mode
)) {
2192 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2193 arg
.u
.device
.specdata2
= MINOR(rdev
);
2195 else if (S_ISCHR(mode
)) {
2197 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2198 arg
.u
.device
.specdata2
= MINOR(rdev
);
2201 arg
.ftype
= NF4SOCK
;
2203 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2205 update_changeattr(dir
, &res
.dir_cinfo
);
2206 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2207 status
= nfs_instantiate(dentry
, &fh
, &fattr
);
2212 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2213 struct iattr
*sattr
, dev_t rdev
)
2215 struct nfs4_exception exception
= { };
2218 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2219 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2221 } while (exception
.retry
);
2225 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2226 struct nfs_fsstat
*fsstat
)
2228 struct nfs4_statfs_arg args
= {
2230 .bitmask
= server
->attr_bitmask
,
2232 struct rpc_message msg
= {
2233 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2238 nfs_fattr_init(fsstat
->fattr
);
2239 return rpc_call_sync(server
->client
, &msg
, 0);
2242 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2244 struct nfs4_exception exception
= { };
2247 err
= nfs4_handle_exception(server
,
2248 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2250 } while (exception
.retry
);
2254 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2255 struct nfs_fsinfo
*fsinfo
)
2257 struct nfs4_fsinfo_arg args
= {
2259 .bitmask
= server
->attr_bitmask
,
2261 struct rpc_message msg
= {
2262 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2267 return rpc_call_sync(server
->client
, &msg
, 0);
2270 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2272 struct nfs4_exception exception
= { };
2276 err
= nfs4_handle_exception(server
,
2277 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2279 } while (exception
.retry
);
2283 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2285 nfs_fattr_init(fsinfo
->fattr
);
2286 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2289 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2290 struct nfs_pathconf
*pathconf
)
2292 struct nfs4_pathconf_arg args
= {
2294 .bitmask
= server
->attr_bitmask
,
2296 struct rpc_message msg
= {
2297 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2299 .rpc_resp
= pathconf
,
2302 /* None of the pathconf attributes are mandatory to implement */
2303 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2304 memset(pathconf
, 0, sizeof(*pathconf
));
2308 nfs_fattr_init(pathconf
->fattr
);
2309 return rpc_call_sync(server
->client
, &msg
, 0);
2312 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2313 struct nfs_pathconf
*pathconf
)
2315 struct nfs4_exception exception
= { };
2319 err
= nfs4_handle_exception(server
,
2320 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2322 } while (exception
.retry
);
2326 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2328 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2330 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
2331 rpc_restart_call(task
);
2334 if (task
->tk_status
> 0)
2335 renew_lease(server
, data
->timestamp
);
2339 static void nfs4_proc_read_setup(struct nfs_read_data
*data
)
2341 struct rpc_message msg
= {
2342 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
],
2343 .rpc_argp
= &data
->args
,
2344 .rpc_resp
= &data
->res
,
2345 .rpc_cred
= data
->cred
,
2348 data
->timestamp
= jiffies
;
2350 rpc_call_setup(&data
->task
, &msg
, 0);
2353 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2355 struct inode
*inode
= data
->inode
;
2357 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2358 rpc_restart_call(task
);
2361 if (task
->tk_status
>= 0) {
2362 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2363 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2368 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, int how
)
2370 struct rpc_message msg
= {
2371 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
],
2372 .rpc_argp
= &data
->args
,
2373 .rpc_resp
= &data
->res
,
2374 .rpc_cred
= data
->cred
,
2376 struct inode
*inode
= data
->inode
;
2377 struct nfs_server
*server
= NFS_SERVER(inode
);
2380 if (how
& FLUSH_STABLE
) {
2381 if (!NFS_I(inode
)->ncommit
)
2382 stable
= NFS_FILE_SYNC
;
2384 stable
= NFS_DATA_SYNC
;
2386 stable
= NFS_UNSTABLE
;
2387 data
->args
.stable
= stable
;
2388 data
->args
.bitmask
= server
->attr_bitmask
;
2389 data
->res
.server
= server
;
2391 data
->timestamp
= jiffies
;
2393 /* Finalize the task. */
2394 rpc_call_setup(&data
->task
, &msg
, 0);
2397 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2399 struct inode
*inode
= data
->inode
;
2401 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2402 rpc_restart_call(task
);
2405 if (task
->tk_status
>= 0)
2406 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2410 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, int how
)
2412 struct rpc_message msg
= {
2413 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
],
2414 .rpc_argp
= &data
->args
,
2415 .rpc_resp
= &data
->res
,
2416 .rpc_cred
= data
->cred
,
2418 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2420 data
->args
.bitmask
= server
->attr_bitmask
;
2421 data
->res
.server
= server
;
2423 rpc_call_setup(&data
->task
, &msg
, 0);
2427 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
2428 * standalone procedure for queueing an asynchronous RENEW.
2430 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
2432 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
2433 unsigned long timestamp
= (unsigned long)data
;
2435 if (task
->tk_status
< 0) {
2436 switch (task
->tk_status
) {
2437 case -NFS4ERR_STALE_CLIENTID
:
2438 case -NFS4ERR_EXPIRED
:
2439 case -NFS4ERR_CB_PATH_DOWN
:
2440 nfs4_schedule_state_recovery(clp
);
2444 spin_lock(&clp
->cl_lock
);
2445 if (time_before(clp
->cl_last_renewal
,timestamp
))
2446 clp
->cl_last_renewal
= timestamp
;
2447 spin_unlock(&clp
->cl_lock
);
2450 static const struct rpc_call_ops nfs4_renew_ops
= {
2451 .rpc_call_done
= nfs4_renew_done
,
2454 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2456 struct rpc_message msg
= {
2457 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2462 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
2463 &nfs4_renew_ops
, (void *)jiffies
);
2466 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2468 struct rpc_message msg
= {
2469 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2473 unsigned long now
= jiffies
;
2476 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2479 spin_lock(&clp
->cl_lock
);
2480 if (time_before(clp
->cl_last_renewal
,now
))
2481 clp
->cl_last_renewal
= now
;
2482 spin_unlock(&clp
->cl_lock
);
2486 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
2488 return (server
->caps
& NFS_CAP_ACLS
)
2489 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2490 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
2493 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
2494 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
2497 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
2499 static void buf_to_pages(const void *buf
, size_t buflen
,
2500 struct page
**pages
, unsigned int *pgbase
)
2502 const void *p
= buf
;
2504 *pgbase
= offset_in_page(buf
);
2506 while (p
< buf
+ buflen
) {
2507 *(pages
++) = virt_to_page(p
);
2508 p
+= PAGE_CACHE_SIZE
;
2512 struct nfs4_cached_acl
{
2518 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
2520 struct nfs_inode
*nfsi
= NFS_I(inode
);
2522 spin_lock(&inode
->i_lock
);
2523 kfree(nfsi
->nfs4_acl
);
2524 nfsi
->nfs4_acl
= acl
;
2525 spin_unlock(&inode
->i_lock
);
2528 static void nfs4_zap_acl_attr(struct inode
*inode
)
2530 nfs4_set_cached_acl(inode
, NULL
);
2533 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
2535 struct nfs_inode
*nfsi
= NFS_I(inode
);
2536 struct nfs4_cached_acl
*acl
;
2539 spin_lock(&inode
->i_lock
);
2540 acl
= nfsi
->nfs4_acl
;
2543 if (buf
== NULL
) /* user is just asking for length */
2545 if (acl
->cached
== 0)
2547 ret
= -ERANGE
; /* see getxattr(2) man page */
2548 if (acl
->len
> buflen
)
2550 memcpy(buf
, acl
->data
, acl
->len
);
2554 spin_unlock(&inode
->i_lock
);
2558 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
2560 struct nfs4_cached_acl
*acl
;
2562 if (buf
&& acl_len
<= PAGE_SIZE
) {
2563 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
2567 memcpy(acl
->data
, buf
, acl_len
);
2569 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
2576 nfs4_set_cached_acl(inode
, acl
);
2579 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2581 struct page
*pages
[NFS4ACL_MAXPAGES
];
2582 struct nfs_getaclargs args
= {
2583 .fh
= NFS_FH(inode
),
2587 size_t resp_len
= buflen
;
2589 struct rpc_message msg
= {
2590 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
2592 .rpc_resp
= &resp_len
,
2594 struct page
*localpage
= NULL
;
2597 if (buflen
< PAGE_SIZE
) {
2598 /* As long as we're doing a round trip to the server anyway,
2599 * let's be prepared for a page of acl data. */
2600 localpage
= alloc_page(GFP_KERNEL
);
2601 resp_buf
= page_address(localpage
);
2602 if (localpage
== NULL
)
2604 args
.acl_pages
[0] = localpage
;
2605 args
.acl_pgbase
= 0;
2606 resp_len
= args
.acl_len
= PAGE_SIZE
;
2609 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
2611 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2614 if (resp_len
> args
.acl_len
)
2615 nfs4_write_cached_acl(inode
, NULL
, resp_len
);
2617 nfs4_write_cached_acl(inode
, resp_buf
, resp_len
);
2620 if (resp_len
> buflen
)
2623 memcpy(buf
, resp_buf
, resp_len
);
2628 __free_page(localpage
);
2632 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2634 struct nfs4_exception exception
= { };
2637 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
2640 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
2641 } while (exception
.retry
);
2645 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
2647 struct nfs_server
*server
= NFS_SERVER(inode
);
2650 if (!nfs4_server_supports_acls(server
))
2652 ret
= nfs_revalidate_inode(server
, inode
);
2655 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
2658 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
2661 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2663 struct nfs_server
*server
= NFS_SERVER(inode
);
2664 struct page
*pages
[NFS4ACL_MAXPAGES
];
2665 struct nfs_setaclargs arg
= {
2666 .fh
= NFS_FH(inode
),
2670 struct rpc_message msg
= {
2671 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
2677 if (!nfs4_server_supports_acls(server
))
2679 nfs_inode_return_delegation(inode
);
2680 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
2681 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2682 nfs_zap_caches(inode
);
2686 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2688 struct nfs4_exception exception
= { };
2691 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2692 __nfs4_proc_set_acl(inode
, buf
, buflen
),
2694 } while (exception
.retry
);
2699 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
)
2701 struct nfs_client
*clp
= server
->nfs_client
;
2703 if (!clp
|| task
->tk_status
>= 0)
2705 switch(task
->tk_status
) {
2706 case -NFS4ERR_STALE_CLIENTID
:
2707 case -NFS4ERR_STALE_STATEID
:
2708 case -NFS4ERR_EXPIRED
:
2709 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
, NULL
);
2710 nfs4_schedule_state_recovery(clp
);
2711 if (test_bit(NFS4CLNT_STATE_RECOVER
, &clp
->cl_state
) == 0)
2712 rpc_wake_up_task(task
);
2713 task
->tk_status
= 0;
2715 case -NFS4ERR_DELAY
:
2716 nfs_inc_server_stats((struct nfs_server
*) server
,
2718 case -NFS4ERR_GRACE
:
2719 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
2720 task
->tk_status
= 0;
2722 case -NFS4ERR_OLD_STATEID
:
2723 task
->tk_status
= 0;
2726 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
2730 static int nfs4_wait_bit_interruptible(void *word
)
2732 if (signal_pending(current
))
2733 return -ERESTARTSYS
;
2738 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
)
2745 rwsem_acquire(&clp
->cl_sem
.dep_map
, 0, 0, _RET_IP_
);
2747 rpc_clnt_sigmask(clnt
, &oldset
);
2748 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_STATE_RECOVER
,
2749 nfs4_wait_bit_interruptible
,
2750 TASK_INTERRUPTIBLE
);
2751 rpc_clnt_sigunmask(clnt
, &oldset
);
2753 rwsem_release(&clp
->cl_sem
.dep_map
, 1, _RET_IP_
);
2757 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
2765 *timeout
= NFS4_POLL_RETRY_MIN
;
2766 if (*timeout
> NFS4_POLL_RETRY_MAX
)
2767 *timeout
= NFS4_POLL_RETRY_MAX
;
2768 rpc_clnt_sigmask(clnt
, &oldset
);
2769 if (clnt
->cl_intr
) {
2770 schedule_timeout_interruptible(*timeout
);
2774 schedule_timeout_uninterruptible(*timeout
);
2775 rpc_clnt_sigunmask(clnt
, &oldset
);
2780 /* This is the error handling routine for processes that are allowed
2783 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
2785 struct nfs_client
*clp
= server
->nfs_client
;
2786 int ret
= errorcode
;
2788 exception
->retry
= 0;
2792 case -NFS4ERR_STALE_CLIENTID
:
2793 case -NFS4ERR_STALE_STATEID
:
2794 case -NFS4ERR_EXPIRED
:
2795 nfs4_schedule_state_recovery(clp
);
2796 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
2798 exception
->retry
= 1;
2800 case -NFS4ERR_FILE_OPEN
:
2801 case -NFS4ERR_GRACE
:
2802 case -NFS4ERR_DELAY
:
2803 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
2806 case -NFS4ERR_OLD_STATEID
:
2807 exception
->retry
= 1;
2809 /* We failed to handle the error */
2810 return nfs4_map_errors(ret
);
2813 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
2815 nfs4_verifier sc_verifier
;
2816 struct nfs4_setclientid setclientid
= {
2817 .sc_verifier
= &sc_verifier
,
2820 struct rpc_message msg
= {
2821 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
2822 .rpc_argp
= &setclientid
,
2830 p
= (__be32
*)sc_verifier
.data
;
2831 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
2832 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
2835 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
2836 sizeof(setclientid
.sc_name
), "%s/%u.%u.%u.%u %s %u",
2837 clp
->cl_ipaddr
, NIPQUAD(clp
->cl_addr
.sin_addr
),
2838 cred
->cr_ops
->cr_name
,
2839 clp
->cl_id_uniquifier
);
2840 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
2841 sizeof(setclientid
.sc_netid
), "tcp");
2842 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
2843 sizeof(setclientid
.sc_uaddr
), "%s.%d.%d",
2844 clp
->cl_ipaddr
, port
>> 8, port
& 255);
2846 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2847 if (status
!= -NFS4ERR_CLID_INUSE
)
2852 ssleep(clp
->cl_lease_time
+ 1);
2854 if (++clp
->cl_id_uniquifier
== 0)
2860 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2862 struct nfs_fsinfo fsinfo
;
2863 struct rpc_message msg
= {
2864 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
2866 .rpc_resp
= &fsinfo
,
2873 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2875 spin_lock(&clp
->cl_lock
);
2876 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
2877 clp
->cl_last_renewal
= now
;
2878 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
2879 spin_unlock(&clp
->cl_lock
);
2884 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2889 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
2893 case -NFS4ERR_RESOURCE
:
2894 /* The IBM lawyers misread another document! */
2895 case -NFS4ERR_DELAY
:
2896 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
2902 struct nfs4_delegreturndata
{
2903 struct nfs4_delegreturnargs args
;
2904 struct nfs4_delegreturnres res
;
2906 nfs4_stateid stateid
;
2907 struct rpc_cred
*cred
;
2908 unsigned long timestamp
;
2909 struct nfs_fattr fattr
;
2913 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *calldata
)
2915 struct nfs4_delegreturndata
*data
= calldata
;
2916 struct rpc_message msg
= {
2917 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
2918 .rpc_argp
= &data
->args
,
2919 .rpc_resp
= &data
->res
,
2920 .rpc_cred
= data
->cred
,
2922 nfs_fattr_init(data
->res
.fattr
);
2923 rpc_call_setup(task
, &msg
, 0);
2926 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
2928 struct nfs4_delegreturndata
*data
= calldata
;
2929 data
->rpc_status
= task
->tk_status
;
2930 if (data
->rpc_status
== 0)
2931 renew_lease(data
->res
.server
, data
->timestamp
);
2934 static void nfs4_delegreturn_release(void *calldata
)
2936 struct nfs4_delegreturndata
*data
= calldata
;
2938 put_rpccred(data
->cred
);
2942 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
2943 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
2944 .rpc_call_done
= nfs4_delegreturn_done
,
2945 .rpc_release
= nfs4_delegreturn_release
,
2948 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2950 struct nfs4_delegreturndata
*data
;
2951 struct nfs_server
*server
= NFS_SERVER(inode
);
2952 struct rpc_task
*task
;
2955 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
2958 data
->args
.fhandle
= &data
->fh
;
2959 data
->args
.stateid
= &data
->stateid
;
2960 data
->args
.bitmask
= server
->attr_bitmask
;
2961 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
2962 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
2963 data
->res
.fattr
= &data
->fattr
;
2964 data
->res
.server
= server
;
2965 data
->cred
= get_rpccred(cred
);
2966 data
->timestamp
= jiffies
;
2967 data
->rpc_status
= 0;
2969 task
= rpc_run_task(NFS_CLIENT(inode
), RPC_TASK_ASYNC
, &nfs4_delegreturn_ops
, data
);
2971 return PTR_ERR(task
);
2972 status
= nfs4_wait_for_completion_rpc_task(task
);
2974 status
= data
->rpc_status
;
2976 nfs_post_op_update_inode(inode
, &data
->fattr
);
2982 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2984 struct nfs_server
*server
= NFS_SERVER(inode
);
2985 struct nfs4_exception exception
= { };
2988 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
);
2990 case -NFS4ERR_STALE_STATEID
:
2991 case -NFS4ERR_EXPIRED
:
2995 err
= nfs4_handle_exception(server
, err
, &exception
);
2996 } while (exception
.retry
);
3000 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3001 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3004 * sleep, with exponential backoff, and retry the LOCK operation.
3006 static unsigned long
3007 nfs4_set_lock_task_retry(unsigned long timeout
)
3009 schedule_timeout_interruptible(timeout
);
3011 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3012 return NFS4_LOCK_MAXTIMEOUT
;
3016 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3018 struct inode
*inode
= state
->inode
;
3019 struct nfs_server
*server
= NFS_SERVER(inode
);
3020 struct nfs_client
*clp
= server
->nfs_client
;
3021 struct nfs_lockt_args arg
= {
3022 .fh
= NFS_FH(inode
),
3025 struct nfs_lockt_res res
= {
3028 struct rpc_message msg
= {
3029 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3032 .rpc_cred
= state
->owner
->so_cred
,
3034 struct nfs4_lock_state
*lsp
;
3037 down_read(&clp
->cl_sem
);
3038 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3039 status
= nfs4_set_lock_state(state
, request
);
3042 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3043 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3044 status
= rpc_call_sync(server
->client
, &msg
, 0);
3047 request
->fl_type
= F_UNLCK
;
3049 case -NFS4ERR_DENIED
:
3052 request
->fl_ops
->fl_release_private(request
);
3054 up_read(&clp
->cl_sem
);
3058 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3060 struct nfs4_exception exception
= { };
3064 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3065 _nfs4_proc_getlk(state
, cmd
, request
),
3067 } while (exception
.retry
);
3071 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3074 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3076 res
= posix_lock_file_wait(file
, fl
);
3079 res
= flock_lock_file_wait(file
, fl
);
3087 struct nfs4_unlockdata
{
3088 struct nfs_locku_args arg
;
3089 struct nfs_locku_res res
;
3090 struct nfs4_lock_state
*lsp
;
3091 struct nfs_open_context
*ctx
;
3092 struct file_lock fl
;
3093 const struct nfs_server
*server
;
3094 unsigned long timestamp
;
3097 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3098 struct nfs_open_context
*ctx
,
3099 struct nfs4_lock_state
*lsp
,
3100 struct nfs_seqid
*seqid
)
3102 struct nfs4_unlockdata
*p
;
3103 struct inode
*inode
= lsp
->ls_state
->inode
;
3105 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
3108 p
->arg
.fh
= NFS_FH(inode
);
3110 p
->arg
.seqid
= seqid
;
3111 p
->arg
.stateid
= &lsp
->ls_stateid
;
3113 atomic_inc(&lsp
->ls_count
);
3114 /* Ensure we don't close file until we're done freeing locks! */
3115 p
->ctx
= get_nfs_open_context(ctx
);
3116 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3117 p
->server
= NFS_SERVER(inode
);
3121 static void nfs4_locku_release_calldata(void *data
)
3123 struct nfs4_unlockdata
*calldata
= data
;
3124 nfs_free_seqid(calldata
->arg
.seqid
);
3125 nfs4_put_lock_state(calldata
->lsp
);
3126 put_nfs_open_context(calldata
->ctx
);
3130 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3132 struct nfs4_unlockdata
*calldata
= data
;
3134 if (RPC_ASSASSINATED(task
))
3136 nfs_increment_lock_seqid(task
->tk_status
, calldata
->arg
.seqid
);
3137 switch (task
->tk_status
) {
3139 memcpy(calldata
->lsp
->ls_stateid
.data
,
3140 calldata
->res
.stateid
.data
,
3141 sizeof(calldata
->lsp
->ls_stateid
.data
));
3142 renew_lease(calldata
->server
, calldata
->timestamp
);
3144 case -NFS4ERR_STALE_STATEID
:
3145 case -NFS4ERR_EXPIRED
:
3148 if (nfs4_async_handle_error(task
, calldata
->server
) == -EAGAIN
)
3149 rpc_restart_call(task
);
3153 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3155 struct nfs4_unlockdata
*calldata
= data
;
3156 struct rpc_message msg
= {
3157 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3158 .rpc_argp
= &calldata
->arg
,
3159 .rpc_resp
= &calldata
->res
,
3160 .rpc_cred
= calldata
->lsp
->ls_state
->owner
->so_cred
,
3163 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3165 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3166 /* Note: exit _without_ running nfs4_locku_done */
3167 task
->tk_action
= NULL
;
3170 calldata
->timestamp
= jiffies
;
3171 rpc_call_setup(task
, &msg
, 0);
3174 static const struct rpc_call_ops nfs4_locku_ops
= {
3175 .rpc_call_prepare
= nfs4_locku_prepare
,
3176 .rpc_call_done
= nfs4_locku_done
,
3177 .rpc_release
= nfs4_locku_release_calldata
,
3180 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3181 struct nfs_open_context
*ctx
,
3182 struct nfs4_lock_state
*lsp
,
3183 struct nfs_seqid
*seqid
)
3185 struct nfs4_unlockdata
*data
;
3187 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3189 nfs_free_seqid(seqid
);
3190 return ERR_PTR(-ENOMEM
);
3193 return rpc_run_task(NFS_CLIENT(lsp
->ls_state
->inode
), RPC_TASK_ASYNC
, &nfs4_locku_ops
, data
);
3196 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3198 struct nfs_seqid
*seqid
;
3199 struct nfs4_lock_state
*lsp
;
3200 struct rpc_task
*task
;
3203 status
= nfs4_set_lock_state(state
, request
);
3204 /* Unlock _before_ we do the RPC call */
3205 request
->fl_flags
|= FL_EXISTS
;
3206 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
)
3210 /* Is this a delegated lock? */
3211 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3213 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3214 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3218 task
= nfs4_do_unlck(request
, request
->fl_file
->private_data
, lsp
, seqid
);
3219 status
= PTR_ERR(task
);
3222 status
= nfs4_wait_for_completion_rpc_task(task
);
3228 struct nfs4_lockdata
{
3229 struct nfs_lock_args arg
;
3230 struct nfs_lock_res res
;
3231 struct nfs4_lock_state
*lsp
;
3232 struct nfs_open_context
*ctx
;
3233 struct file_lock fl
;
3234 unsigned long timestamp
;
3239 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3240 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3242 struct nfs4_lockdata
*p
;
3243 struct inode
*inode
= lsp
->ls_state
->inode
;
3244 struct nfs_server
*server
= NFS_SERVER(inode
);
3246 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3250 p
->arg
.fh
= NFS_FH(inode
);
3252 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3253 if (p
->arg
.lock_seqid
== NULL
)
3255 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3256 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3257 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3259 atomic_inc(&lsp
->ls_count
);
3260 p
->ctx
= get_nfs_open_context(ctx
);
3261 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3268 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3270 struct nfs4_lockdata
*data
= calldata
;
3271 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3272 struct nfs4_state_owner
*sp
= state
->owner
;
3273 struct rpc_message msg
= {
3274 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3275 .rpc_argp
= &data
->arg
,
3276 .rpc_resp
= &data
->res
,
3277 .rpc_cred
= sp
->so_cred
,
3280 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3282 dprintk("%s: begin!\n", __FUNCTION__
);
3283 /* Do we need to do an open_to_lock_owner? */
3284 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3285 data
->arg
.open_seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
3286 if (data
->arg
.open_seqid
== NULL
) {
3287 data
->rpc_status
= -ENOMEM
;
3288 task
->tk_action
= NULL
;
3291 data
->arg
.open_stateid
= &state
->stateid
;
3292 data
->arg
.new_lock_owner
= 1;
3294 data
->timestamp
= jiffies
;
3295 rpc_call_setup(task
, &msg
, 0);
3297 dprintk("%s: done!, ret = %d\n", __FUNCTION__
, data
->rpc_status
);
3300 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3302 struct nfs4_lockdata
*data
= calldata
;
3304 dprintk("%s: begin!\n", __FUNCTION__
);
3306 data
->rpc_status
= task
->tk_status
;
3307 if (RPC_ASSASSINATED(task
))
3309 if (data
->arg
.new_lock_owner
!= 0) {
3310 nfs_increment_open_seqid(data
->rpc_status
, data
->arg
.open_seqid
);
3311 if (data
->rpc_status
== 0)
3312 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3316 if (data
->rpc_status
== 0) {
3317 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3318 sizeof(data
->lsp
->ls_stateid
.data
));
3319 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3320 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3322 nfs_increment_lock_seqid(data
->rpc_status
, data
->arg
.lock_seqid
);
3324 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, data
->rpc_status
);
3327 static void nfs4_lock_release(void *calldata
)
3329 struct nfs4_lockdata
*data
= calldata
;
3331 dprintk("%s: begin!\n", __FUNCTION__
);
3332 if (data
->arg
.open_seqid
!= NULL
)
3333 nfs_free_seqid(data
->arg
.open_seqid
);
3334 if (data
->cancelled
!= 0) {
3335 struct rpc_task
*task
;
3336 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3337 data
->arg
.lock_seqid
);
3340 dprintk("%s: cancelling lock!\n", __FUNCTION__
);
3342 nfs_free_seqid(data
->arg
.lock_seqid
);
3343 nfs4_put_lock_state(data
->lsp
);
3344 put_nfs_open_context(data
->ctx
);
3346 dprintk("%s: done!\n", __FUNCTION__
);
3349 static const struct rpc_call_ops nfs4_lock_ops
= {
3350 .rpc_call_prepare
= nfs4_lock_prepare
,
3351 .rpc_call_done
= nfs4_lock_done
,
3352 .rpc_release
= nfs4_lock_release
,
3355 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3357 struct nfs4_lockdata
*data
;
3358 struct rpc_task
*task
;
3361 dprintk("%s: begin!\n", __FUNCTION__
);
3362 data
= nfs4_alloc_lockdata(fl
, fl
->fl_file
->private_data
,
3363 fl
->fl_u
.nfs4_fl
.owner
);
3367 data
->arg
.block
= 1;
3369 data
->arg
.reclaim
= 1;
3370 task
= rpc_run_task(NFS_CLIENT(state
->inode
), RPC_TASK_ASYNC
,
3371 &nfs4_lock_ops
, data
);
3373 return PTR_ERR(task
);
3374 ret
= nfs4_wait_for_completion_rpc_task(task
);
3376 ret
= data
->rpc_status
;
3377 if (ret
== -NFS4ERR_DENIED
)
3380 data
->cancelled
= 1;
3382 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, ret
);
3386 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
3388 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3389 struct nfs4_exception exception
= { };
3393 /* Cache the lock if possible... */
3394 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3396 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
3397 if (err
!= -NFS4ERR_DELAY
)
3399 nfs4_handle_exception(server
, err
, &exception
);
3400 } while (exception
.retry
);
3404 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
3406 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3407 struct nfs4_exception exception
= { };
3410 err
= nfs4_set_lock_state(state
, request
);
3414 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3416 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
3417 if (err
!= -NFS4ERR_DELAY
)
3419 nfs4_handle_exception(server
, err
, &exception
);
3420 } while (exception
.retry
);
3424 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3426 struct nfs_client
*clp
= state
->owner
->so_client
;
3427 unsigned char fl_flags
= request
->fl_flags
;
3430 /* Is this a delegated open? */
3431 status
= nfs4_set_lock_state(state
, request
);
3434 request
->fl_flags
|= FL_ACCESS
;
3435 status
= do_vfs_lock(request
->fl_file
, request
);
3438 down_read(&clp
->cl_sem
);
3439 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3440 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3441 /* Yes: cache locks! */
3442 down_read(&nfsi
->rwsem
);
3443 /* ...but avoid races with delegation recall... */
3444 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3445 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
3446 status
= do_vfs_lock(request
->fl_file
, request
);
3447 up_read(&nfsi
->rwsem
);
3450 up_read(&nfsi
->rwsem
);
3452 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
3455 /* Note: we always want to sleep here! */
3456 request
->fl_flags
= fl_flags
| FL_SLEEP
;
3457 if (do_vfs_lock(request
->fl_file
, request
) < 0)
3458 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __FUNCTION__
);
3460 up_read(&clp
->cl_sem
);
3462 request
->fl_flags
= fl_flags
;
3466 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3468 struct nfs4_exception exception
= { };
3472 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3473 _nfs4_proc_setlk(state
, cmd
, request
),
3475 } while (exception
.retry
);
3480 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
3482 struct nfs_open_context
*ctx
;
3483 struct nfs4_state
*state
;
3484 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
3487 /* verify open state */
3488 ctx
= (struct nfs_open_context
*)filp
->private_data
;
3491 if (request
->fl_start
< 0 || request
->fl_end
< 0)
3495 return nfs4_proc_getlk(state
, F_GETLK
, request
);
3497 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
3500 if (request
->fl_type
== F_UNLCK
)
3501 return nfs4_proc_unlck(state
, cmd
, request
);
3504 status
= nfs4_proc_setlk(state
, cmd
, request
);
3505 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
3507 timeout
= nfs4_set_lock_task_retry(timeout
);
3508 status
= -ERESTARTSYS
;
3511 } while(status
< 0);
3515 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
3517 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3518 struct nfs4_exception exception
= { };
3521 err
= nfs4_set_lock_state(state
, fl
);
3525 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
3526 if (err
!= -NFS4ERR_DELAY
)
3528 err
= nfs4_handle_exception(server
, err
, &exception
);
3529 } while (exception
.retry
);
3534 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
3536 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
3537 size_t buflen
, int flags
)
3539 struct inode
*inode
= dentry
->d_inode
;
3541 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3544 if (!S_ISREG(inode
->i_mode
) &&
3545 (!S_ISDIR(inode
->i_mode
) || inode
->i_mode
& S_ISVTX
))
3548 return nfs4_proc_set_acl(inode
, buf
, buflen
);
3551 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
3552 * and that's what we'll do for e.g. user attributes that haven't been set.
3553 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
3554 * attributes in kernel-managed attribute namespaces. */
3555 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
3558 struct inode
*inode
= dentry
->d_inode
;
3560 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3563 return nfs4_proc_get_acl(inode
, buf
, buflen
);
3566 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
3568 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
3570 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
3572 if (buf
&& buflen
< len
)
3575 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
3579 int nfs4_proc_fs_locations(struct inode
*dir
, struct qstr
*name
,
3580 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
3582 struct nfs_server
*server
= NFS_SERVER(dir
);
3584 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
3585 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
3587 struct nfs4_fs_locations_arg args
= {
3588 .dir_fh
= NFS_FH(dir
),
3593 struct rpc_message msg
= {
3594 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
3596 .rpc_resp
= fs_locations
,
3600 dprintk("%s: start\n", __FUNCTION__
);
3601 nfs_fattr_init(&fs_locations
->fattr
);
3602 fs_locations
->server
= server
;
3603 fs_locations
->nlocations
= 0;
3604 status
= rpc_call_sync(server
->client
, &msg
, 0);
3605 dprintk("%s: returned status = %d\n", __FUNCTION__
, status
);
3609 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops
= {
3610 .recover_open
= nfs4_open_reclaim
,
3611 .recover_lock
= nfs4_lock_reclaim
,
3614 struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops
= {
3615 .recover_open
= nfs4_open_expired
,
3616 .recover_lock
= nfs4_lock_expired
,
3619 static const struct inode_operations nfs4_file_inode_operations
= {
3620 .permission
= nfs_permission
,
3621 .getattr
= nfs_getattr
,
3622 .setattr
= nfs_setattr
,
3623 .getxattr
= nfs4_getxattr
,
3624 .setxattr
= nfs4_setxattr
,
3625 .listxattr
= nfs4_listxattr
,
3628 const struct nfs_rpc_ops nfs_v4_clientops
= {
3629 .version
= 4, /* protocol version */
3630 .dentry_ops
= &nfs4_dentry_operations
,
3631 .dir_inode_ops
= &nfs4_dir_inode_operations
,
3632 .file_inode_ops
= &nfs4_file_inode_operations
,
3633 .getroot
= nfs4_proc_get_root
,
3634 .getattr
= nfs4_proc_getattr
,
3635 .setattr
= nfs4_proc_setattr
,
3636 .lookupfh
= nfs4_proc_lookupfh
,
3637 .lookup
= nfs4_proc_lookup
,
3638 .access
= nfs4_proc_access
,
3639 .readlink
= nfs4_proc_readlink
,
3640 .create
= nfs4_proc_create
,
3641 .remove
= nfs4_proc_remove
,
3642 .unlink_setup
= nfs4_proc_unlink_setup
,
3643 .unlink_done
= nfs4_proc_unlink_done
,
3644 .rename
= nfs4_proc_rename
,
3645 .link
= nfs4_proc_link
,
3646 .symlink
= nfs4_proc_symlink
,
3647 .mkdir
= nfs4_proc_mkdir
,
3648 .rmdir
= nfs4_proc_remove
,
3649 .readdir
= nfs4_proc_readdir
,
3650 .mknod
= nfs4_proc_mknod
,
3651 .statfs
= nfs4_proc_statfs
,
3652 .fsinfo
= nfs4_proc_fsinfo
,
3653 .pathconf
= nfs4_proc_pathconf
,
3654 .set_capabilities
= nfs4_server_capabilities
,
3655 .decode_dirent
= nfs4_decode_dirent
,
3656 .read_setup
= nfs4_proc_read_setup
,
3657 .read_done
= nfs4_read_done
,
3658 .write_setup
= nfs4_proc_write_setup
,
3659 .write_done
= nfs4_write_done
,
3660 .commit_setup
= nfs4_proc_commit_setup
,
3661 .commit_done
= nfs4_commit_done
,
3662 .file_open
= nfs_open
,
3663 .file_release
= nfs_release
,
3664 .lock
= nfs4_proc_lock
,
3665 .clear_acl_cache
= nfs4_zap_acl_attr
,