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"
57 #define NFSDBG_FACILITY NFSDBG_PROC
59 #define NFS4_POLL_RETRY_MIN (HZ/10)
60 #define NFS4_POLL_RETRY_MAX (15*HZ)
63 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
64 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
65 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
66 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
67 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
69 /* Prevent leaks of NFSv4 errors into userland */
70 static 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
, NFS_FILEID(dentry
->d_inode
));
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
, NFS_FILEID(dentry
->d_parent
->d_inode
));
191 readdir
->pgbase
= (char *)p
- (char *)start
;
192 readdir
->count
-= readdir
->pgbase
;
193 kunmap_atomic(start
, KM_USER0
);
196 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
202 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
203 nfs_wait_bit_killable
, TASK_KILLABLE
);
207 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
214 *timeout
= NFS4_POLL_RETRY_MIN
;
215 if (*timeout
> NFS4_POLL_RETRY_MAX
)
216 *timeout
= NFS4_POLL_RETRY_MAX
;
217 schedule_timeout_killable(*timeout
);
218 if (fatal_signal_pending(current
))
224 /* This is the error handling routine for processes that are allowed
227 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
229 struct nfs_client
*clp
= server
->nfs_client
;
230 struct nfs4_state
*state
= exception
->state
;
233 exception
->retry
= 0;
237 case -NFS4ERR_ADMIN_REVOKED
:
238 case -NFS4ERR_BAD_STATEID
:
239 case -NFS4ERR_OPENMODE
:
242 nfs4_state_mark_reclaim_nograce(clp
, state
);
243 case -NFS4ERR_STALE_CLIENTID
:
244 case -NFS4ERR_STALE_STATEID
:
245 case -NFS4ERR_EXPIRED
:
246 nfs4_schedule_state_recovery(clp
);
247 ret
= nfs4_wait_clnt_recover(clp
);
249 exception
->retry
= 1;
251 case -NFS4ERR_FILE_OPEN
:
254 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
257 case -NFS4ERR_OLD_STATEID
:
258 exception
->retry
= 1;
260 /* We failed to handle the error */
261 return nfs4_map_errors(ret
);
265 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
267 struct nfs_client
*clp
= server
->nfs_client
;
268 spin_lock(&clp
->cl_lock
);
269 if (time_before(clp
->cl_last_renewal
,timestamp
))
270 clp
->cl_last_renewal
= timestamp
;
271 spin_unlock(&clp
->cl_lock
);
274 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
276 struct nfs_inode
*nfsi
= NFS_I(dir
);
278 spin_lock(&dir
->i_lock
);
279 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
280 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
281 nfs_force_lookup_revalidate(dir
);
282 nfsi
->change_attr
= cinfo
->after
;
283 spin_unlock(&dir
->i_lock
);
286 struct nfs4_opendata
{
288 struct nfs_openargs o_arg
;
289 struct nfs_openres o_res
;
290 struct nfs_open_confirmargs c_arg
;
291 struct nfs_open_confirmres c_res
;
292 struct nfs_fattr f_attr
;
293 struct nfs_fattr dir_attr
;
296 struct nfs4_state_owner
*owner
;
297 struct nfs4_state
*state
;
299 unsigned long timestamp
;
300 unsigned int rpc_done
: 1;
306 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
308 p
->o_res
.f_attr
= &p
->f_attr
;
309 p
->o_res
.dir_attr
= &p
->dir_attr
;
310 p
->o_res
.seqid
= p
->o_arg
.seqid
;
311 p
->c_res
.seqid
= p
->c_arg
.seqid
;
312 p
->o_res
.server
= p
->o_arg
.server
;
313 nfs_fattr_init(&p
->f_attr
);
314 nfs_fattr_init(&p
->dir_attr
);
317 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
318 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
319 const struct iattr
*attrs
)
321 struct dentry
*parent
= dget_parent(path
->dentry
);
322 struct inode
*dir
= parent
->d_inode
;
323 struct nfs_server
*server
= NFS_SERVER(dir
);
324 struct nfs4_opendata
*p
;
326 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
329 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
330 if (p
->o_arg
.seqid
== NULL
)
332 p
->path
.mnt
= mntget(path
->mnt
);
333 p
->path
.dentry
= dget(path
->dentry
);
336 atomic_inc(&sp
->so_count
);
337 p
->o_arg
.fh
= NFS_FH(dir
);
338 p
->o_arg
.open_flags
= flags
;
339 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
340 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
341 p
->o_arg
.id
= sp
->so_owner_id
.id
;
342 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
343 p
->o_arg
.server
= server
;
344 p
->o_arg
.bitmask
= server
->attr_bitmask
;
345 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
346 if (flags
& O_EXCL
) {
347 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
350 } else if (flags
& O_CREAT
) {
351 p
->o_arg
.u
.attrs
= &p
->attrs
;
352 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
354 p
->c_arg
.fh
= &p
->o_res
.fh
;
355 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
356 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
357 nfs4_init_opendata_res(p
);
367 static void nfs4_opendata_free(struct kref
*kref
)
369 struct nfs4_opendata
*p
= container_of(kref
,
370 struct nfs4_opendata
, kref
);
372 nfs_free_seqid(p
->o_arg
.seqid
);
373 if (p
->state
!= NULL
)
374 nfs4_put_open_state(p
->state
);
375 nfs4_put_state_owner(p
->owner
);
381 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
384 kref_put(&p
->kref
, nfs4_opendata_free
);
387 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
391 ret
= rpc_wait_for_completion_task(task
);
395 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
399 if (open_mode
& O_EXCL
)
401 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
403 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0;
406 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0;
408 case FMODE_READ
|FMODE_WRITE
:
409 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0;
415 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
417 if ((delegation
->type
& fmode
) != fmode
)
419 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
421 nfs_mark_delegation_referenced(delegation
);
425 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
434 case FMODE_READ
|FMODE_WRITE
:
437 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
440 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
442 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
443 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
444 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
447 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
450 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
452 case FMODE_READ
|FMODE_WRITE
:
453 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
457 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
459 write_seqlock(&state
->seqlock
);
460 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
461 write_sequnlock(&state
->seqlock
);
464 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
467 * Protect the call to nfs4_state_set_mode_locked and
468 * serialise the stateid update
470 write_seqlock(&state
->seqlock
);
471 if (deleg_stateid
!= NULL
) {
472 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
473 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
475 if (open_stateid
!= NULL
)
476 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
477 write_sequnlock(&state
->seqlock
);
478 spin_lock(&state
->owner
->so_lock
);
479 update_open_stateflags(state
, fmode
);
480 spin_unlock(&state
->owner
->so_lock
);
483 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
485 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
486 struct nfs_delegation
*deleg_cur
;
489 fmode
&= (FMODE_READ
|FMODE_WRITE
);
492 deleg_cur
= rcu_dereference(nfsi
->delegation
);
493 if (deleg_cur
== NULL
)
496 spin_lock(&deleg_cur
->lock
);
497 if (nfsi
->delegation
!= deleg_cur
||
498 (deleg_cur
->type
& fmode
) != fmode
)
499 goto no_delegation_unlock
;
501 if (delegation
== NULL
)
502 delegation
= &deleg_cur
->stateid
;
503 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
504 goto no_delegation_unlock
;
506 nfs_mark_delegation_referenced(deleg_cur
);
507 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
509 no_delegation_unlock
:
510 spin_unlock(&deleg_cur
->lock
);
514 if (!ret
&& open_stateid
!= NULL
) {
515 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
523 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
525 struct nfs_delegation
*delegation
;
528 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
529 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
534 nfs_inode_return_delegation(inode
);
537 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
539 struct nfs4_state
*state
= opendata
->state
;
540 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
541 struct nfs_delegation
*delegation
;
542 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
543 fmode_t fmode
= opendata
->o_arg
.fmode
;
544 nfs4_stateid stateid
;
548 if (can_open_cached(state
, fmode
, open_mode
)) {
549 spin_lock(&state
->owner
->so_lock
);
550 if (can_open_cached(state
, fmode
, open_mode
)) {
551 update_open_stateflags(state
, fmode
);
552 spin_unlock(&state
->owner
->so_lock
);
553 goto out_return_state
;
555 spin_unlock(&state
->owner
->so_lock
);
558 delegation
= rcu_dereference(nfsi
->delegation
);
559 if (delegation
== NULL
||
560 !can_open_delegated(delegation
, fmode
)) {
564 /* Save the delegation */
565 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
567 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
572 /* Try to update the stateid using the delegation */
573 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
574 goto out_return_state
;
579 atomic_inc(&state
->count
);
583 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
586 struct nfs4_state
*state
= NULL
;
587 struct nfs_delegation
*delegation
;
590 if (!data
->rpc_done
) {
591 state
= nfs4_try_open_cached(data
);
596 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
598 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
599 ret
= PTR_ERR(inode
);
603 state
= nfs4_get_open_state(inode
, data
->owner
);
606 if (data
->o_res
.delegation_type
!= 0) {
607 int delegation_flags
= 0;
610 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
612 delegation_flags
= delegation
->flags
;
614 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
615 nfs_inode_set_delegation(state
->inode
,
616 data
->owner
->so_cred
,
619 nfs_inode_reclaim_delegation(state
->inode
,
620 data
->owner
->so_cred
,
624 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
635 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
637 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
638 struct nfs_open_context
*ctx
;
640 spin_lock(&state
->inode
->i_lock
);
641 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
642 if (ctx
->state
!= state
)
644 get_nfs_open_context(ctx
);
645 spin_unlock(&state
->inode
->i_lock
);
648 spin_unlock(&state
->inode
->i_lock
);
649 return ERR_PTR(-ENOENT
);
652 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
654 struct nfs4_opendata
*opendata
;
656 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, 0, NULL
);
657 if (opendata
== NULL
)
658 return ERR_PTR(-ENOMEM
);
659 opendata
->state
= state
;
660 atomic_inc(&state
->count
);
664 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
666 struct nfs4_state
*newstate
;
669 opendata
->o_arg
.open_flags
= 0;
670 opendata
->o_arg
.fmode
= fmode
;
671 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
672 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
673 nfs4_init_opendata_res(opendata
);
674 ret
= _nfs4_proc_open(opendata
);
677 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
678 if (IS_ERR(newstate
))
679 return PTR_ERR(newstate
);
680 nfs4_close_state(&opendata
->path
, newstate
, fmode
);
685 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
687 struct nfs4_state
*newstate
;
690 /* memory barrier prior to reading state->n_* */
691 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
693 if (state
->n_rdwr
!= 0) {
694 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
697 if (newstate
!= state
)
700 if (state
->n_wronly
!= 0) {
701 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
704 if (newstate
!= state
)
707 if (state
->n_rdonly
!= 0) {
708 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
711 if (newstate
!= state
)
715 * We may have performed cached opens for all three recoveries.
716 * Check if we need to update the current stateid.
718 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
719 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
720 write_seqlock(&state
->seqlock
);
721 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
722 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
723 write_sequnlock(&state
->seqlock
);
730 * reclaim state on the server after a reboot.
732 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
734 struct nfs_delegation
*delegation
;
735 struct nfs4_opendata
*opendata
;
736 fmode_t delegation_type
= 0;
739 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
740 if (IS_ERR(opendata
))
741 return PTR_ERR(opendata
);
742 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
743 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
745 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
746 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
747 delegation_type
= delegation
->type
;
749 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
750 status
= nfs4_open_recover(opendata
, state
);
751 nfs4_opendata_put(opendata
);
755 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
757 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
758 struct nfs4_exception exception
= { };
761 err
= _nfs4_do_open_reclaim(ctx
, state
);
762 if (err
!= -NFS4ERR_DELAY
)
764 nfs4_handle_exception(server
, err
, &exception
);
765 } while (exception
.retry
);
769 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
771 struct nfs_open_context
*ctx
;
774 ctx
= nfs4_state_find_open_context(state
);
777 ret
= nfs4_do_open_reclaim(ctx
, state
);
778 put_nfs_open_context(ctx
);
782 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
784 struct nfs4_opendata
*opendata
;
787 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
788 if (IS_ERR(opendata
))
789 return PTR_ERR(opendata
);
790 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
791 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
792 sizeof(opendata
->o_arg
.u
.delegation
.data
));
793 ret
= nfs4_open_recover(opendata
, state
);
794 nfs4_opendata_put(opendata
);
798 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
800 struct nfs4_exception exception
= { };
801 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
804 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
808 case -NFS4ERR_STALE_CLIENTID
:
809 case -NFS4ERR_STALE_STATEID
:
810 case -NFS4ERR_EXPIRED
:
811 /* Don't recall a delegation if it was lost */
812 nfs4_schedule_state_recovery(server
->nfs_client
);
815 err
= nfs4_handle_exception(server
, err
, &exception
);
816 } while (exception
.retry
);
820 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
822 struct nfs4_opendata
*data
= calldata
;
824 data
->rpc_status
= task
->tk_status
;
825 if (RPC_ASSASSINATED(task
))
827 if (data
->rpc_status
== 0) {
828 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
829 sizeof(data
->o_res
.stateid
.data
));
830 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
831 renew_lease(data
->o_res
.server
, data
->timestamp
);
836 static void nfs4_open_confirm_release(void *calldata
)
838 struct nfs4_opendata
*data
= calldata
;
839 struct nfs4_state
*state
= NULL
;
841 /* If this request hasn't been cancelled, do nothing */
842 if (data
->cancelled
== 0)
844 /* In case of error, no cleanup! */
847 state
= nfs4_opendata_to_nfs4_state(data
);
849 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
851 nfs4_opendata_put(data
);
854 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
855 .rpc_call_done
= nfs4_open_confirm_done
,
856 .rpc_release
= nfs4_open_confirm_release
,
860 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
862 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
864 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
865 struct rpc_task
*task
;
866 struct rpc_message msg
= {
867 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
868 .rpc_argp
= &data
->c_arg
,
869 .rpc_resp
= &data
->c_res
,
870 .rpc_cred
= data
->owner
->so_cred
,
872 struct rpc_task_setup task_setup_data
= {
873 .rpc_client
= server
->client
,
875 .callback_ops
= &nfs4_open_confirm_ops
,
876 .callback_data
= data
,
877 .workqueue
= nfsiod_workqueue
,
878 .flags
= RPC_TASK_ASYNC
,
882 kref_get(&data
->kref
);
884 data
->rpc_status
= 0;
885 data
->timestamp
= jiffies
;
886 task
= rpc_run_task(&task_setup_data
);
888 return PTR_ERR(task
);
889 status
= nfs4_wait_for_completion_rpc_task(task
);
894 status
= data
->rpc_status
;
899 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
901 struct nfs4_opendata
*data
= calldata
;
902 struct nfs4_state_owner
*sp
= data
->owner
;
904 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
907 * Check if we still need to send an OPEN call, or if we can use
908 * a delegation instead.
910 if (data
->state
!= NULL
) {
911 struct nfs_delegation
*delegation
;
913 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
916 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
917 if (delegation
!= NULL
&&
918 test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) == 0) {
924 /* Update sequence id. */
925 data
->o_arg
.id
= sp
->so_owner_id
.id
;
926 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
927 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
928 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
929 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
931 data
->timestamp
= jiffies
;
932 rpc_call_start(task
);
935 task
->tk_action
= NULL
;
939 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
941 struct nfs4_opendata
*data
= calldata
;
943 data
->rpc_status
= task
->tk_status
;
944 if (RPC_ASSASSINATED(task
))
946 if (task
->tk_status
== 0) {
947 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
951 data
->rpc_status
= -ELOOP
;
954 data
->rpc_status
= -EISDIR
;
957 data
->rpc_status
= -ENOTDIR
;
959 renew_lease(data
->o_res
.server
, data
->timestamp
);
960 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
961 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
966 static void nfs4_open_release(void *calldata
)
968 struct nfs4_opendata
*data
= calldata
;
969 struct nfs4_state
*state
= NULL
;
971 /* If this request hasn't been cancelled, do nothing */
972 if (data
->cancelled
== 0)
974 /* In case of error, no cleanup! */
975 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
977 /* In case we need an open_confirm, no cleanup! */
978 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
980 state
= nfs4_opendata_to_nfs4_state(data
);
982 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
984 nfs4_opendata_put(data
);
987 static const struct rpc_call_ops nfs4_open_ops
= {
988 .rpc_call_prepare
= nfs4_open_prepare
,
989 .rpc_call_done
= nfs4_open_done
,
990 .rpc_release
= nfs4_open_release
,
994 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
996 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
998 struct inode
*dir
= data
->dir
->d_inode
;
999 struct nfs_server
*server
= NFS_SERVER(dir
);
1000 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1001 struct nfs_openres
*o_res
= &data
->o_res
;
1002 struct rpc_task
*task
;
1003 struct rpc_message msg
= {
1004 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1007 .rpc_cred
= data
->owner
->so_cred
,
1009 struct rpc_task_setup task_setup_data
= {
1010 .rpc_client
= server
->client
,
1011 .rpc_message
= &msg
,
1012 .callback_ops
= &nfs4_open_ops
,
1013 .callback_data
= data
,
1014 .workqueue
= nfsiod_workqueue
,
1015 .flags
= RPC_TASK_ASYNC
,
1019 kref_get(&data
->kref
);
1021 data
->rpc_status
= 0;
1022 data
->cancelled
= 0;
1023 task
= rpc_run_task(&task_setup_data
);
1025 return PTR_ERR(task
);
1026 status
= nfs4_wait_for_completion_rpc_task(task
);
1028 data
->cancelled
= 1;
1031 status
= data
->rpc_status
;
1033 if (status
!= 0 || !data
->rpc_done
)
1036 if (o_res
->fh
.size
== 0)
1037 _nfs4_proc_lookup(dir
, o_arg
->name
, &o_res
->fh
, o_res
->f_attr
);
1039 if (o_arg
->open_flags
& O_CREAT
) {
1040 update_changeattr(dir
, &o_res
->cinfo
);
1041 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1043 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1044 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1045 status
= _nfs4_proc_open_confirm(data
);
1049 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1050 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1054 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1056 struct nfs_client
*clp
= server
->nfs_client
;
1060 ret
= nfs4_wait_clnt_recover(clp
);
1063 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1064 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1066 nfs4_schedule_state_recovery(clp
);
1073 * reclaim state on the server after a network partition.
1074 * Assumes caller holds the appropriate lock
1076 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1078 struct nfs4_opendata
*opendata
;
1081 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1082 if (IS_ERR(opendata
))
1083 return PTR_ERR(opendata
);
1084 ret
= nfs4_open_recover(opendata
, state
);
1086 d_drop(ctx
->path
.dentry
);
1087 nfs4_opendata_put(opendata
);
1091 static inline int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1093 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1094 struct nfs4_exception exception
= { };
1098 err
= _nfs4_open_expired(ctx
, state
);
1099 if (err
!= -NFS4ERR_DELAY
)
1101 nfs4_handle_exception(server
, err
, &exception
);
1102 } while (exception
.retry
);
1106 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1108 struct nfs_open_context
*ctx
;
1111 ctx
= nfs4_state_find_open_context(state
);
1113 return PTR_ERR(ctx
);
1114 ret
= nfs4_do_open_expired(ctx
, state
);
1115 put_nfs_open_context(ctx
);
1120 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1121 * fields corresponding to attributes that were used to store the verifier.
1122 * Make sure we clobber those fields in the later setattr call
1124 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1126 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1127 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1128 sattr
->ia_valid
|= ATTR_ATIME
;
1130 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1131 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1132 sattr
->ia_valid
|= ATTR_MTIME
;
1136 * Returns a referenced nfs4_state
1138 static int _nfs4_do_open(struct inode
*dir
, struct path
*path
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
1140 struct nfs4_state_owner
*sp
;
1141 struct nfs4_state
*state
= NULL
;
1142 struct nfs_server
*server
= NFS_SERVER(dir
);
1143 struct nfs4_opendata
*opendata
;
1146 /* Protect against reboot recovery conflicts */
1148 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1149 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1152 status
= nfs4_recover_expired_lease(server
);
1154 goto err_put_state_owner
;
1155 if (path
->dentry
->d_inode
!= NULL
)
1156 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, fmode
);
1158 opendata
= nfs4_opendata_alloc(path
, sp
, fmode
, flags
, sattr
);
1159 if (opendata
== NULL
)
1160 goto err_put_state_owner
;
1162 if (path
->dentry
->d_inode
!= NULL
)
1163 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1165 status
= _nfs4_proc_open(opendata
);
1167 goto err_opendata_put
;
1169 if (opendata
->o_arg
.open_flags
& O_EXCL
)
1170 nfs4_exclusive_attrset(opendata
, sattr
);
1172 state
= nfs4_opendata_to_nfs4_state(opendata
);
1173 status
= PTR_ERR(state
);
1175 goto err_opendata_put
;
1176 nfs4_opendata_put(opendata
);
1177 nfs4_put_state_owner(sp
);
1181 nfs4_opendata_put(opendata
);
1182 err_put_state_owner
:
1183 nfs4_put_state_owner(sp
);
1190 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct path
*path
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1192 struct nfs4_exception exception
= { };
1193 struct nfs4_state
*res
;
1197 status
= _nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
, &res
);
1200 /* NOTE: BAD_SEQID means the server and client disagree about the
1201 * book-keeping w.r.t. state-changing operations
1202 * (OPEN/CLOSE/LOCK/LOCKU...)
1203 * It is actually a sign of a bug on the client or on the server.
1205 * If we receive a BAD_SEQID error in the particular case of
1206 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1207 * have unhashed the old state_owner for us, and that we can
1208 * therefore safely retry using a new one. We should still warn
1209 * the user though...
1211 if (status
== -NFS4ERR_BAD_SEQID
) {
1212 printk(KERN_WARNING
"NFS: v4 server %s "
1213 " returned a bad sequence-id error!\n",
1214 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1215 exception
.retry
= 1;
1219 * BAD_STATEID on OPEN means that the server cancelled our
1220 * state before it received the OPEN_CONFIRM.
1221 * Recover by retrying the request as per the discussion
1222 * on Page 181 of RFC3530.
1224 if (status
== -NFS4ERR_BAD_STATEID
) {
1225 exception
.retry
= 1;
1228 if (status
== -EAGAIN
) {
1229 /* We must have found a delegation */
1230 exception
.retry
= 1;
1233 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1234 status
, &exception
));
1235 } while (exception
.retry
);
1239 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1240 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1241 struct nfs4_state
*state
)
1243 struct nfs_server
*server
= NFS_SERVER(inode
);
1244 struct nfs_setattrargs arg
= {
1245 .fh
= NFS_FH(inode
),
1248 .bitmask
= server
->attr_bitmask
,
1250 struct nfs_setattrres res
= {
1254 struct rpc_message msg
= {
1255 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1260 unsigned long timestamp
= jiffies
;
1263 nfs_fattr_init(fattr
);
1265 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1266 /* Use that stateid */
1267 } else if (state
!= NULL
) {
1268 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1270 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1272 status
= rpc_call_sync(server
->client
, &msg
, 0);
1273 if (status
== 0 && state
!= NULL
)
1274 renew_lease(server
, timestamp
);
1278 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1279 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1280 struct nfs4_state
*state
)
1282 struct nfs_server
*server
= NFS_SERVER(inode
);
1283 struct nfs4_exception exception
= { };
1286 err
= nfs4_handle_exception(server
,
1287 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1289 } while (exception
.retry
);
1293 struct nfs4_closedata
{
1295 struct inode
*inode
;
1296 struct nfs4_state
*state
;
1297 struct nfs_closeargs arg
;
1298 struct nfs_closeres res
;
1299 struct nfs_fattr fattr
;
1300 unsigned long timestamp
;
1303 static void nfs4_free_closedata(void *data
)
1305 struct nfs4_closedata
*calldata
= data
;
1306 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1308 nfs4_put_open_state(calldata
->state
);
1309 nfs_free_seqid(calldata
->arg
.seqid
);
1310 nfs4_put_state_owner(sp
);
1311 path_put(&calldata
->path
);
1315 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1317 struct nfs4_closedata
*calldata
= data
;
1318 struct nfs4_state
*state
= calldata
->state
;
1319 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1321 if (RPC_ASSASSINATED(task
))
1323 /* hmm. we are done with the inode, and in the process of freeing
1324 * the state_owner. we keep this around to process errors
1326 switch (task
->tk_status
) {
1328 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1329 renew_lease(server
, calldata
->timestamp
);
1331 case -NFS4ERR_STALE_STATEID
:
1332 case -NFS4ERR_OLD_STATEID
:
1333 case -NFS4ERR_BAD_STATEID
:
1334 case -NFS4ERR_EXPIRED
:
1335 if (calldata
->arg
.fmode
== 0)
1338 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
) {
1339 rpc_restart_call(task
);
1343 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1346 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1348 struct nfs4_closedata
*calldata
= data
;
1349 struct nfs4_state
*state
= calldata
->state
;
1350 int clear_rd
, clear_wr
, clear_rdwr
;
1352 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1355 clear_rd
= clear_wr
= clear_rdwr
= 0;
1356 spin_lock(&state
->owner
->so_lock
);
1357 /* Calculate the change in open mode */
1358 if (state
->n_rdwr
== 0) {
1359 if (state
->n_rdonly
== 0) {
1360 clear_rd
|= test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1361 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1363 if (state
->n_wronly
== 0) {
1364 clear_wr
|= test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1365 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1368 spin_unlock(&state
->owner
->so_lock
);
1369 if (!clear_rd
&& !clear_wr
&& !clear_rdwr
) {
1370 /* Note: exit _without_ calling nfs4_close_done */
1371 task
->tk_action
= NULL
;
1374 nfs_fattr_init(calldata
->res
.fattr
);
1375 if (test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0) {
1376 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1377 calldata
->arg
.fmode
= FMODE_READ
;
1378 } else if (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0) {
1379 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1380 calldata
->arg
.fmode
= FMODE_WRITE
;
1382 calldata
->timestamp
= jiffies
;
1383 rpc_call_start(task
);
1386 static const struct rpc_call_ops nfs4_close_ops
= {
1387 .rpc_call_prepare
= nfs4_close_prepare
,
1388 .rpc_call_done
= nfs4_close_done
,
1389 .rpc_release
= nfs4_free_closedata
,
1393 * It is possible for data to be read/written from a mem-mapped file
1394 * after the sys_close call (which hits the vfs layer as a flush).
1395 * This means that we can't safely call nfsv4 close on a file until
1396 * the inode is cleared. This in turn means that we are not good
1397 * NFSv4 citizens - we do not indicate to the server to update the file's
1398 * share state even when we are done with one of the three share
1399 * stateid's in the inode.
1401 * NOTE: Caller must be holding the sp->so_owner semaphore!
1403 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, int wait
)
1405 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1406 struct nfs4_closedata
*calldata
;
1407 struct nfs4_state_owner
*sp
= state
->owner
;
1408 struct rpc_task
*task
;
1409 struct rpc_message msg
= {
1410 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1411 .rpc_cred
= state
->owner
->so_cred
,
1413 struct rpc_task_setup task_setup_data
= {
1414 .rpc_client
= server
->client
,
1415 .rpc_message
= &msg
,
1416 .callback_ops
= &nfs4_close_ops
,
1417 .workqueue
= nfsiod_workqueue
,
1418 .flags
= RPC_TASK_ASYNC
,
1420 int status
= -ENOMEM
;
1422 calldata
= kmalloc(sizeof(*calldata
), GFP_KERNEL
);
1423 if (calldata
== NULL
)
1425 calldata
->inode
= state
->inode
;
1426 calldata
->state
= state
;
1427 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1428 calldata
->arg
.stateid
= &state
->open_stateid
;
1429 /* Serialization for the sequence id */
1430 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1431 if (calldata
->arg
.seqid
== NULL
)
1432 goto out_free_calldata
;
1433 calldata
->arg
.fmode
= 0;
1434 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
1435 calldata
->res
.fattr
= &calldata
->fattr
;
1436 calldata
->res
.seqid
= calldata
->arg
.seqid
;
1437 calldata
->res
.server
= server
;
1438 calldata
->path
.mnt
= mntget(path
->mnt
);
1439 calldata
->path
.dentry
= dget(path
->dentry
);
1441 msg
.rpc_argp
= &calldata
->arg
,
1442 msg
.rpc_resp
= &calldata
->res
,
1443 task_setup_data
.callback_data
= calldata
;
1444 task
= rpc_run_task(&task_setup_data
);
1446 return PTR_ERR(task
);
1449 status
= rpc_wait_for_completion_task(task
);
1455 nfs4_put_open_state(state
);
1456 nfs4_put_state_owner(sp
);
1460 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
, fmode_t fmode
)
1465 /* If the open_intent is for execute, we have an extra check to make */
1466 if (fmode
& FMODE_EXEC
) {
1467 ret
= nfs_may_open(state
->inode
,
1468 state
->owner
->so_cred
,
1469 nd
->intent
.open
.flags
);
1473 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1474 if (!IS_ERR(filp
)) {
1475 struct nfs_open_context
*ctx
;
1476 ctx
= nfs_file_open_context(filp
);
1480 ret
= PTR_ERR(filp
);
1482 nfs4_close_sync(path
, state
, fmode
& (FMODE_READ
|FMODE_WRITE
));
1487 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1489 struct path path
= {
1490 .mnt
= nd
->path
.mnt
,
1493 struct dentry
*parent
;
1495 struct rpc_cred
*cred
;
1496 struct nfs4_state
*state
;
1498 fmode_t fmode
= nd
->intent
.open
.flags
& (FMODE_READ
| FMODE_WRITE
| FMODE_EXEC
);
1500 if (nd
->flags
& LOOKUP_CREATE
) {
1501 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1502 attr
.ia_valid
= ATTR_MODE
;
1503 if (!IS_POSIXACL(dir
))
1504 attr
.ia_mode
&= ~current_umask();
1507 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1510 cred
= rpc_lookup_cred();
1512 return (struct dentry
*)cred
;
1513 parent
= dentry
->d_parent
;
1514 /* Protect against concurrent sillydeletes */
1515 nfs_block_sillyrename(parent
);
1516 state
= nfs4_do_open(dir
, &path
, fmode
, nd
->intent
.open
.flags
, &attr
, cred
);
1518 if (IS_ERR(state
)) {
1519 if (PTR_ERR(state
) == -ENOENT
) {
1520 d_add(dentry
, NULL
);
1521 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1523 nfs_unblock_sillyrename(parent
);
1524 return (struct dentry
*)state
;
1526 res
= d_add_unique(dentry
, igrab(state
->inode
));
1529 nfs_set_verifier(path
.dentry
, nfs_save_change_attribute(dir
));
1530 nfs_unblock_sillyrename(parent
);
1531 nfs4_intent_set_file(nd
, &path
, state
, fmode
);
1536 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1538 struct path path
= {
1539 .mnt
= nd
->path
.mnt
,
1542 struct rpc_cred
*cred
;
1543 struct nfs4_state
*state
;
1544 fmode_t fmode
= openflags
& (FMODE_READ
| FMODE_WRITE
);
1546 cred
= rpc_lookup_cred();
1548 return PTR_ERR(cred
);
1549 state
= nfs4_do_open(dir
, &path
, fmode
, openflags
, NULL
, cred
);
1551 if (IS_ERR(state
)) {
1552 switch (PTR_ERR(state
)) {
1558 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1564 if (state
->inode
== dentry
->d_inode
) {
1565 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1566 nfs4_intent_set_file(nd
, &path
, state
, fmode
);
1569 nfs4_close_sync(&path
, state
, fmode
);
1575 void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
1577 if (ctx
->state
== NULL
)
1580 nfs4_close_sync(&ctx
->path
, ctx
->state
, ctx
->mode
);
1582 nfs4_close_state(&ctx
->path
, ctx
->state
, ctx
->mode
);
1585 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1587 struct nfs4_server_caps_arg args
= {
1590 struct nfs4_server_caps_res res
= {};
1591 struct rpc_message msg
= {
1592 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1598 status
= rpc_call_sync(server
->client
, &msg
, 0);
1600 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
1601 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
1602 server
->caps
|= NFS_CAP_ACLS
;
1603 if (res
.has_links
!= 0)
1604 server
->caps
|= NFS_CAP_HARDLINKS
;
1605 if (res
.has_symlinks
!= 0)
1606 server
->caps
|= NFS_CAP_SYMLINKS
;
1607 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
1608 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
1609 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
1610 server
->acl_bitmask
= res
.acl_bitmask
;
1615 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1617 struct nfs4_exception exception
= { };
1620 err
= nfs4_handle_exception(server
,
1621 _nfs4_server_capabilities(server
, fhandle
),
1623 } while (exception
.retry
);
1627 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1628 struct nfs_fsinfo
*info
)
1630 struct nfs4_lookup_root_arg args
= {
1631 .bitmask
= nfs4_fattr_bitmap
,
1633 struct nfs4_lookup_res res
= {
1635 .fattr
= info
->fattr
,
1638 struct rpc_message msg
= {
1639 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
1643 nfs_fattr_init(info
->fattr
);
1644 return rpc_call_sync(server
->client
, &msg
, 0);
1647 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1648 struct nfs_fsinfo
*info
)
1650 struct nfs4_exception exception
= { };
1653 err
= nfs4_handle_exception(server
,
1654 _nfs4_lookup_root(server
, fhandle
, info
),
1656 } while (exception
.retry
);
1661 * get the file handle for the "/" directory on the server
1663 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1664 struct nfs_fsinfo
*info
)
1668 status
= nfs4_lookup_root(server
, fhandle
, info
);
1670 status
= nfs4_server_capabilities(server
, fhandle
);
1672 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
1673 return nfs4_map_errors(status
);
1677 * Get locations and (maybe) other attributes of a referral.
1678 * Note that we'll actually follow the referral later when
1679 * we detect fsid mismatch in inode revalidation
1681 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
1683 int status
= -ENOMEM
;
1684 struct page
*page
= NULL
;
1685 struct nfs4_fs_locations
*locations
= NULL
;
1687 page
= alloc_page(GFP_KERNEL
);
1690 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
1691 if (locations
== NULL
)
1694 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
1697 /* Make sure server returned a different fsid for the referral */
1698 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
1699 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__
, name
->name
);
1704 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
1705 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
1707 fattr
->mode
= S_IFDIR
;
1708 memset(fhandle
, 0, sizeof(struct nfs_fh
));
1717 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1719 struct nfs4_getattr_arg args
= {
1721 .bitmask
= server
->attr_bitmask
,
1723 struct nfs4_getattr_res res
= {
1727 struct rpc_message msg
= {
1728 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
1733 nfs_fattr_init(fattr
);
1734 return rpc_call_sync(server
->client
, &msg
, 0);
1737 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1739 struct nfs4_exception exception
= { };
1742 err
= nfs4_handle_exception(server
,
1743 _nfs4_proc_getattr(server
, fhandle
, fattr
),
1745 } while (exception
.retry
);
1750 * The file is not closed if it is opened due to the a request to change
1751 * the size of the file. The open call will not be needed once the
1752 * VFS layer lookup-intents are implemented.
1754 * Close is called when the inode is destroyed.
1755 * If we haven't opened the file for O_WRONLY, we
1756 * need to in the size_change case to obtain a stateid.
1759 * Because OPEN is always done by name in nfsv4, it is
1760 * possible that we opened a different file by the same
1761 * name. We can recognize this race condition, but we
1762 * can't do anything about it besides returning an error.
1764 * This will be fixed with VFS changes (lookup-intent).
1767 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
1768 struct iattr
*sattr
)
1770 struct inode
*inode
= dentry
->d_inode
;
1771 struct rpc_cred
*cred
= NULL
;
1772 struct nfs4_state
*state
= NULL
;
1775 nfs_fattr_init(fattr
);
1777 /* Search for an existing open(O_WRITE) file */
1778 if (sattr
->ia_valid
& ATTR_FILE
) {
1779 struct nfs_open_context
*ctx
;
1781 ctx
= nfs_file_open_context(sattr
->ia_file
);
1788 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
1790 nfs_setattr_update_inode(inode
, sattr
);
1794 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
1795 const struct qstr
*name
, struct nfs_fh
*fhandle
,
1796 struct nfs_fattr
*fattr
)
1799 struct nfs4_lookup_arg args
= {
1800 .bitmask
= server
->attr_bitmask
,
1804 struct nfs4_lookup_res res
= {
1809 struct rpc_message msg
= {
1810 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1815 nfs_fattr_init(fattr
);
1817 dprintk("NFS call lookupfh %s\n", name
->name
);
1818 status
= rpc_call_sync(server
->client
, &msg
, 0);
1819 dprintk("NFS reply lookupfh: %d\n", status
);
1823 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1824 struct qstr
*name
, struct nfs_fh
*fhandle
,
1825 struct nfs_fattr
*fattr
)
1827 struct nfs4_exception exception
= { };
1830 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
1832 if (err
== -NFS4ERR_MOVED
) {
1836 err
= nfs4_handle_exception(server
, err
, &exception
);
1837 } while (exception
.retry
);
1841 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
1842 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1846 dprintk("NFS call lookup %s\n", name
->name
);
1847 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
1848 if (status
== -NFS4ERR_MOVED
)
1849 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
1850 dprintk("NFS reply lookup: %d\n", status
);
1854 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1856 struct nfs4_exception exception
= { };
1859 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1860 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
1862 } while (exception
.retry
);
1866 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1868 struct nfs_server
*server
= NFS_SERVER(inode
);
1869 struct nfs_fattr fattr
;
1870 struct nfs4_accessargs args
= {
1871 .fh
= NFS_FH(inode
),
1872 .bitmask
= server
->attr_bitmask
,
1874 struct nfs4_accessres res
= {
1878 struct rpc_message msg
= {
1879 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
1882 .rpc_cred
= entry
->cred
,
1884 int mode
= entry
->mask
;
1888 * Determine which access bits we want to ask for...
1890 if (mode
& MAY_READ
)
1891 args
.access
|= NFS4_ACCESS_READ
;
1892 if (S_ISDIR(inode
->i_mode
)) {
1893 if (mode
& MAY_WRITE
)
1894 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
1895 if (mode
& MAY_EXEC
)
1896 args
.access
|= NFS4_ACCESS_LOOKUP
;
1898 if (mode
& MAY_WRITE
)
1899 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
1900 if (mode
& MAY_EXEC
)
1901 args
.access
|= NFS4_ACCESS_EXECUTE
;
1903 nfs_fattr_init(&fattr
);
1904 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1907 if (res
.access
& NFS4_ACCESS_READ
)
1908 entry
->mask
|= MAY_READ
;
1909 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
1910 entry
->mask
|= MAY_WRITE
;
1911 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
1912 entry
->mask
|= MAY_EXEC
;
1913 nfs_refresh_inode(inode
, &fattr
);
1918 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1920 struct nfs4_exception exception
= { };
1923 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1924 _nfs4_proc_access(inode
, entry
),
1926 } while (exception
.retry
);
1931 * TODO: For the time being, we don't try to get any attributes
1932 * along with any of the zero-copy operations READ, READDIR,
1935 * In the case of the first three, we want to put the GETATTR
1936 * after the read-type operation -- this is because it is hard
1937 * to predict the length of a GETATTR response in v4, and thus
1938 * align the READ data correctly. This means that the GETATTR
1939 * may end up partially falling into the page cache, and we should
1940 * shift it into the 'tail' of the xdr_buf before processing.
1941 * To do this efficiently, we need to know the total length
1942 * of data received, which doesn't seem to be available outside
1945 * In the case of WRITE, we also want to put the GETATTR after
1946 * the operation -- in this case because we want to make sure
1947 * we get the post-operation mtime and size. This means that
1948 * we can't use xdr_encode_pages() as written: we need a variant
1949 * of it which would leave room in the 'tail' iovec.
1951 * Both of these changes to the XDR layer would in fact be quite
1952 * minor, but I decided to leave them for a subsequent patch.
1954 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1955 unsigned int pgbase
, unsigned int pglen
)
1957 struct nfs4_readlink args
= {
1958 .fh
= NFS_FH(inode
),
1963 struct nfs4_readlink_res res
;
1964 struct rpc_message msg
= {
1965 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
1970 return rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1973 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1974 unsigned int pgbase
, unsigned int pglen
)
1976 struct nfs4_exception exception
= { };
1979 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1980 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
1982 } while (exception
.retry
);
1988 * We will need to arrange for the VFS layer to provide an atomic open.
1989 * Until then, this create/open method is prone to inefficiency and race
1990 * conditions due to the lookup, create, and open VFS calls from sys_open()
1991 * placed on the wire.
1993 * Given the above sorry state of affairs, I'm simply sending an OPEN.
1994 * The file will be opened again in the subsequent VFS open call
1995 * (nfs4_proc_file_open).
1997 * The open for read will just hang around to be used by any process that
1998 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2002 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2003 int flags
, struct nameidata
*nd
)
2005 struct path path
= {
2006 .mnt
= nd
->path
.mnt
,
2009 struct nfs4_state
*state
;
2010 struct rpc_cred
*cred
;
2011 fmode_t fmode
= flags
& (FMODE_READ
| FMODE_WRITE
);
2014 cred
= rpc_lookup_cred();
2016 status
= PTR_ERR(cred
);
2019 state
= nfs4_do_open(dir
, &path
, fmode
, flags
, sattr
, cred
);
2021 if (IS_ERR(state
)) {
2022 status
= PTR_ERR(state
);
2025 d_add(dentry
, igrab(state
->inode
));
2026 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2027 if (flags
& O_EXCL
) {
2028 struct nfs_fattr fattr
;
2029 status
= nfs4_do_setattr(state
->inode
, cred
, &fattr
, sattr
, state
);
2031 nfs_setattr_update_inode(state
->inode
, sattr
);
2032 nfs_post_op_update_inode(state
->inode
, &fattr
);
2034 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
2035 status
= nfs4_intent_set_file(nd
, &path
, state
, fmode
);
2037 nfs4_close_sync(&path
, state
, fmode
);
2044 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2046 struct nfs_server
*server
= NFS_SERVER(dir
);
2047 struct nfs_removeargs args
= {
2049 .name
.len
= name
->len
,
2050 .name
.name
= name
->name
,
2051 .bitmask
= server
->attr_bitmask
,
2053 struct nfs_removeres res
= {
2056 struct rpc_message msg
= {
2057 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2063 nfs_fattr_init(&res
.dir_attr
);
2064 status
= rpc_call_sync(server
->client
, &msg
, 0);
2066 update_changeattr(dir
, &res
.cinfo
);
2067 nfs_post_op_update_inode(dir
, &res
.dir_attr
);
2072 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2074 struct nfs4_exception exception
= { };
2077 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2078 _nfs4_proc_remove(dir
, name
),
2080 } while (exception
.retry
);
2084 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2086 struct nfs_server
*server
= NFS_SERVER(dir
);
2087 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2088 struct nfs_removeres
*res
= msg
->rpc_resp
;
2090 args
->bitmask
= server
->cache_consistency_bitmask
;
2091 res
->server
= server
;
2092 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2095 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2097 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2099 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2101 update_changeattr(dir
, &res
->cinfo
);
2102 nfs_post_op_update_inode(dir
, &res
->dir_attr
);
2106 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2107 struct inode
*new_dir
, struct qstr
*new_name
)
2109 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2110 struct nfs4_rename_arg arg
= {
2111 .old_dir
= NFS_FH(old_dir
),
2112 .new_dir
= NFS_FH(new_dir
),
2113 .old_name
= old_name
,
2114 .new_name
= new_name
,
2115 .bitmask
= server
->attr_bitmask
,
2117 struct nfs_fattr old_fattr
, new_fattr
;
2118 struct nfs4_rename_res res
= {
2120 .old_fattr
= &old_fattr
,
2121 .new_fattr
= &new_fattr
,
2123 struct rpc_message msg
= {
2124 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2130 nfs_fattr_init(res
.old_fattr
);
2131 nfs_fattr_init(res
.new_fattr
);
2132 status
= rpc_call_sync(server
->client
, &msg
, 0);
2135 update_changeattr(old_dir
, &res
.old_cinfo
);
2136 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2137 update_changeattr(new_dir
, &res
.new_cinfo
);
2138 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2143 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2144 struct inode
*new_dir
, struct qstr
*new_name
)
2146 struct nfs4_exception exception
= { };
2149 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2150 _nfs4_proc_rename(old_dir
, old_name
,
2153 } while (exception
.retry
);
2157 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2159 struct nfs_server
*server
= NFS_SERVER(inode
);
2160 struct nfs4_link_arg arg
= {
2161 .fh
= NFS_FH(inode
),
2162 .dir_fh
= NFS_FH(dir
),
2164 .bitmask
= server
->attr_bitmask
,
2166 struct nfs_fattr fattr
, dir_attr
;
2167 struct nfs4_link_res res
= {
2170 .dir_attr
= &dir_attr
,
2172 struct rpc_message msg
= {
2173 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2179 nfs_fattr_init(res
.fattr
);
2180 nfs_fattr_init(res
.dir_attr
);
2181 status
= rpc_call_sync(server
->client
, &msg
, 0);
2183 update_changeattr(dir
, &res
.cinfo
);
2184 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2185 nfs_post_op_update_inode(inode
, res
.fattr
);
2191 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2193 struct nfs4_exception exception
= { };
2196 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2197 _nfs4_proc_link(inode
, dir
, name
),
2199 } while (exception
.retry
);
2203 struct nfs4_createdata
{
2204 struct rpc_message msg
;
2205 struct nfs4_create_arg arg
;
2206 struct nfs4_create_res res
;
2208 struct nfs_fattr fattr
;
2209 struct nfs_fattr dir_fattr
;
2212 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2213 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2215 struct nfs4_createdata
*data
;
2217 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2219 struct nfs_server
*server
= NFS_SERVER(dir
);
2221 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2222 data
->msg
.rpc_argp
= &data
->arg
;
2223 data
->msg
.rpc_resp
= &data
->res
;
2224 data
->arg
.dir_fh
= NFS_FH(dir
);
2225 data
->arg
.server
= server
;
2226 data
->arg
.name
= name
;
2227 data
->arg
.attrs
= sattr
;
2228 data
->arg
.ftype
= ftype
;
2229 data
->arg
.bitmask
= server
->attr_bitmask
;
2230 data
->res
.server
= server
;
2231 data
->res
.fh
= &data
->fh
;
2232 data
->res
.fattr
= &data
->fattr
;
2233 data
->res
.dir_fattr
= &data
->dir_fattr
;
2234 nfs_fattr_init(data
->res
.fattr
);
2235 nfs_fattr_init(data
->res
.dir_fattr
);
2240 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2242 int status
= rpc_call_sync(NFS_CLIENT(dir
), &data
->msg
, 0);
2244 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2245 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2246 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2251 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2256 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2257 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2259 struct nfs4_createdata
*data
;
2260 int status
= -ENAMETOOLONG
;
2262 if (len
> NFS4_MAXPATHLEN
)
2266 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2270 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2271 data
->arg
.u
.symlink
.pages
= &page
;
2272 data
->arg
.u
.symlink
.len
= len
;
2274 status
= nfs4_do_create(dir
, dentry
, data
);
2276 nfs4_free_createdata(data
);
2281 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2282 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2284 struct nfs4_exception exception
= { };
2287 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2288 _nfs4_proc_symlink(dir
, dentry
, page
,
2291 } while (exception
.retry
);
2295 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2296 struct iattr
*sattr
)
2298 struct nfs4_createdata
*data
;
2299 int status
= -ENOMEM
;
2301 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2305 status
= nfs4_do_create(dir
, dentry
, data
);
2307 nfs4_free_createdata(data
);
2312 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2313 struct iattr
*sattr
)
2315 struct nfs4_exception exception
= { };
2318 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2319 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2321 } while (exception
.retry
);
2325 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2326 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2328 struct inode
*dir
= dentry
->d_inode
;
2329 struct nfs4_readdir_arg args
= {
2334 .bitmask
= NFS_SERVER(dentry
->d_inode
)->cache_consistency_bitmask
,
2336 struct nfs4_readdir_res res
;
2337 struct rpc_message msg
= {
2338 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2345 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
2346 dentry
->d_parent
->d_name
.name
,
2347 dentry
->d_name
.name
,
2348 (unsigned long long)cookie
);
2349 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2350 res
.pgbase
= args
.pgbase
;
2351 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2353 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2355 nfs_invalidate_atime(dir
);
2357 dprintk("%s: returns %d\n", __func__
, status
);
2361 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2362 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2364 struct nfs4_exception exception
= { };
2367 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2368 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2371 } while (exception
.retry
);
2375 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2376 struct iattr
*sattr
, dev_t rdev
)
2378 struct nfs4_createdata
*data
;
2379 int mode
= sattr
->ia_mode
;
2380 int status
= -ENOMEM
;
2382 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2383 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2385 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
2390 data
->arg
.ftype
= NF4FIFO
;
2391 else if (S_ISBLK(mode
)) {
2392 data
->arg
.ftype
= NF4BLK
;
2393 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2394 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2396 else if (S_ISCHR(mode
)) {
2397 data
->arg
.ftype
= NF4CHR
;
2398 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2399 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2402 status
= nfs4_do_create(dir
, dentry
, data
);
2404 nfs4_free_createdata(data
);
2409 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2410 struct iattr
*sattr
, dev_t rdev
)
2412 struct nfs4_exception exception
= { };
2415 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2416 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2418 } while (exception
.retry
);
2422 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2423 struct nfs_fsstat
*fsstat
)
2425 struct nfs4_statfs_arg args
= {
2427 .bitmask
= server
->attr_bitmask
,
2429 struct nfs4_statfs_res res
= {
2432 struct rpc_message msg
= {
2433 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2438 nfs_fattr_init(fsstat
->fattr
);
2439 return rpc_call_sync(server
->client
, &msg
, 0);
2442 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2444 struct nfs4_exception exception
= { };
2447 err
= nfs4_handle_exception(server
,
2448 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2450 } while (exception
.retry
);
2454 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2455 struct nfs_fsinfo
*fsinfo
)
2457 struct nfs4_fsinfo_arg args
= {
2459 .bitmask
= server
->attr_bitmask
,
2461 struct rpc_message msg
= {
2462 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2467 return rpc_call_sync(server
->client
, &msg
, 0);
2470 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2472 struct nfs4_exception exception
= { };
2476 err
= nfs4_handle_exception(server
,
2477 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2479 } while (exception
.retry
);
2483 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2485 nfs_fattr_init(fsinfo
->fattr
);
2486 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2489 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2490 struct nfs_pathconf
*pathconf
)
2492 struct nfs4_pathconf_arg args
= {
2494 .bitmask
= server
->attr_bitmask
,
2496 struct rpc_message msg
= {
2497 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2499 .rpc_resp
= pathconf
,
2502 /* None of the pathconf attributes are mandatory to implement */
2503 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2504 memset(pathconf
, 0, sizeof(*pathconf
));
2508 nfs_fattr_init(pathconf
->fattr
);
2509 return rpc_call_sync(server
->client
, &msg
, 0);
2512 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2513 struct nfs_pathconf
*pathconf
)
2515 struct nfs4_exception exception
= { };
2519 err
= nfs4_handle_exception(server
,
2520 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2522 } while (exception
.retry
);
2526 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2528 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2530 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
2531 rpc_restart_call(task
);
2535 nfs_invalidate_atime(data
->inode
);
2536 if (task
->tk_status
> 0)
2537 renew_lease(server
, data
->timestamp
);
2541 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
2543 data
->timestamp
= jiffies
;
2544 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
2547 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2549 struct inode
*inode
= data
->inode
;
2551 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
2552 rpc_restart_call(task
);
2555 if (task
->tk_status
>= 0) {
2556 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2557 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
2562 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
2564 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2566 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
2567 data
->res
.server
= server
;
2568 data
->timestamp
= jiffies
;
2570 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
2573 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2575 struct inode
*inode
= data
->inode
;
2577 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
2578 rpc_restart_call(task
);
2581 nfs_refresh_inode(inode
, data
->res
.fattr
);
2585 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
2587 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2589 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
2590 data
->res
.server
= server
;
2591 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
2595 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
2596 * standalone procedure for queueing an asynchronous RENEW.
2598 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
2600 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
2601 unsigned long timestamp
= (unsigned long)data
;
2603 if (task
->tk_status
< 0) {
2604 /* Unless we're shutting down, schedule state recovery! */
2605 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) != 0)
2606 nfs4_schedule_state_recovery(clp
);
2609 spin_lock(&clp
->cl_lock
);
2610 if (time_before(clp
->cl_last_renewal
,timestamp
))
2611 clp
->cl_last_renewal
= timestamp
;
2612 spin_unlock(&clp
->cl_lock
);
2615 static const struct rpc_call_ops nfs4_renew_ops
= {
2616 .rpc_call_done
= nfs4_renew_done
,
2619 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2621 struct rpc_message msg
= {
2622 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2627 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
2628 &nfs4_renew_ops
, (void *)jiffies
);
2631 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2633 struct rpc_message msg
= {
2634 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2638 unsigned long now
= jiffies
;
2641 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2644 spin_lock(&clp
->cl_lock
);
2645 if (time_before(clp
->cl_last_renewal
,now
))
2646 clp
->cl_last_renewal
= now
;
2647 spin_unlock(&clp
->cl_lock
);
2651 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
2653 return (server
->caps
& NFS_CAP_ACLS
)
2654 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2655 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
2658 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
2659 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
2662 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
2664 static void buf_to_pages(const void *buf
, size_t buflen
,
2665 struct page
**pages
, unsigned int *pgbase
)
2667 const void *p
= buf
;
2669 *pgbase
= offset_in_page(buf
);
2671 while (p
< buf
+ buflen
) {
2672 *(pages
++) = virt_to_page(p
);
2673 p
+= PAGE_CACHE_SIZE
;
2677 struct nfs4_cached_acl
{
2683 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
2685 struct nfs_inode
*nfsi
= NFS_I(inode
);
2687 spin_lock(&inode
->i_lock
);
2688 kfree(nfsi
->nfs4_acl
);
2689 nfsi
->nfs4_acl
= acl
;
2690 spin_unlock(&inode
->i_lock
);
2693 static void nfs4_zap_acl_attr(struct inode
*inode
)
2695 nfs4_set_cached_acl(inode
, NULL
);
2698 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
2700 struct nfs_inode
*nfsi
= NFS_I(inode
);
2701 struct nfs4_cached_acl
*acl
;
2704 spin_lock(&inode
->i_lock
);
2705 acl
= nfsi
->nfs4_acl
;
2708 if (buf
== NULL
) /* user is just asking for length */
2710 if (acl
->cached
== 0)
2712 ret
= -ERANGE
; /* see getxattr(2) man page */
2713 if (acl
->len
> buflen
)
2715 memcpy(buf
, acl
->data
, acl
->len
);
2719 spin_unlock(&inode
->i_lock
);
2723 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
2725 struct nfs4_cached_acl
*acl
;
2727 if (buf
&& acl_len
<= PAGE_SIZE
) {
2728 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
2732 memcpy(acl
->data
, buf
, acl_len
);
2734 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
2741 nfs4_set_cached_acl(inode
, acl
);
2744 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2746 struct page
*pages
[NFS4ACL_MAXPAGES
];
2747 struct nfs_getaclargs args
= {
2748 .fh
= NFS_FH(inode
),
2752 size_t resp_len
= buflen
;
2754 struct rpc_message msg
= {
2755 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
2757 .rpc_resp
= &resp_len
,
2759 struct page
*localpage
= NULL
;
2762 if (buflen
< PAGE_SIZE
) {
2763 /* As long as we're doing a round trip to the server anyway,
2764 * let's be prepared for a page of acl data. */
2765 localpage
= alloc_page(GFP_KERNEL
);
2766 resp_buf
= page_address(localpage
);
2767 if (localpage
== NULL
)
2769 args
.acl_pages
[0] = localpage
;
2770 args
.acl_pgbase
= 0;
2771 resp_len
= args
.acl_len
= PAGE_SIZE
;
2774 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
2776 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2779 if (resp_len
> args
.acl_len
)
2780 nfs4_write_cached_acl(inode
, NULL
, resp_len
);
2782 nfs4_write_cached_acl(inode
, resp_buf
, resp_len
);
2785 if (resp_len
> buflen
)
2788 memcpy(buf
, resp_buf
, resp_len
);
2793 __free_page(localpage
);
2797 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2799 struct nfs4_exception exception
= { };
2802 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
2805 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
2806 } while (exception
.retry
);
2810 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
2812 struct nfs_server
*server
= NFS_SERVER(inode
);
2815 if (!nfs4_server_supports_acls(server
))
2817 ret
= nfs_revalidate_inode(server
, inode
);
2820 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
2821 nfs_zap_acl_cache(inode
);
2822 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
2825 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
2828 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2830 struct nfs_server
*server
= NFS_SERVER(inode
);
2831 struct page
*pages
[NFS4ACL_MAXPAGES
];
2832 struct nfs_setaclargs arg
= {
2833 .fh
= NFS_FH(inode
),
2837 struct rpc_message msg
= {
2838 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
2844 if (!nfs4_server_supports_acls(server
))
2846 nfs_inode_return_delegation(inode
);
2847 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
2848 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2849 nfs_access_zap_cache(inode
);
2850 nfs_zap_acl_cache(inode
);
2854 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2856 struct nfs4_exception exception
= { };
2859 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2860 __nfs4_proc_set_acl(inode
, buf
, buflen
),
2862 } while (exception
.retry
);
2867 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
2869 struct nfs_client
*clp
= server
->nfs_client
;
2871 if (!clp
|| task
->tk_status
>= 0)
2873 switch(task
->tk_status
) {
2874 case -NFS4ERR_ADMIN_REVOKED
:
2875 case -NFS4ERR_BAD_STATEID
:
2876 case -NFS4ERR_OPENMODE
:
2879 nfs4_state_mark_reclaim_nograce(clp
, state
);
2880 case -NFS4ERR_STALE_CLIENTID
:
2881 case -NFS4ERR_STALE_STATEID
:
2882 case -NFS4ERR_EXPIRED
:
2883 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
2884 nfs4_schedule_state_recovery(clp
);
2885 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
2886 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
2887 task
->tk_status
= 0;
2889 case -NFS4ERR_DELAY
:
2890 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
2891 case -NFS4ERR_GRACE
:
2892 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
2893 task
->tk_status
= 0;
2895 case -NFS4ERR_OLD_STATEID
:
2896 task
->tk_status
= 0;
2899 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
2903 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
2905 nfs4_verifier sc_verifier
;
2906 struct nfs4_setclientid setclientid
= {
2907 .sc_verifier
= &sc_verifier
,
2910 struct rpc_message msg
= {
2911 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
2912 .rpc_argp
= &setclientid
,
2920 p
= (__be32
*)sc_verifier
.data
;
2921 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
2922 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
2925 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
2926 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
2928 rpc_peeraddr2str(clp
->cl_rpcclient
,
2930 rpc_peeraddr2str(clp
->cl_rpcclient
,
2932 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
2933 clp
->cl_id_uniquifier
);
2934 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
2935 sizeof(setclientid
.sc_netid
),
2936 rpc_peeraddr2str(clp
->cl_rpcclient
,
2937 RPC_DISPLAY_NETID
));
2938 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
2939 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
2940 clp
->cl_ipaddr
, port
>> 8, port
& 255);
2942 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2943 if (status
!= -NFS4ERR_CLID_INUSE
)
2948 ssleep(clp
->cl_lease_time
+ 1);
2950 if (++clp
->cl_id_uniquifier
== 0)
2956 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2958 struct nfs_fsinfo fsinfo
;
2959 struct rpc_message msg
= {
2960 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
2962 .rpc_resp
= &fsinfo
,
2969 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2971 spin_lock(&clp
->cl_lock
);
2972 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
2973 clp
->cl_last_renewal
= now
;
2974 spin_unlock(&clp
->cl_lock
);
2979 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2984 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
2988 case -NFS4ERR_RESOURCE
:
2989 /* The IBM lawyers misread another document! */
2990 case -NFS4ERR_DELAY
:
2991 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
2997 struct nfs4_delegreturndata
{
2998 struct nfs4_delegreturnargs args
;
2999 struct nfs4_delegreturnres res
;
3001 nfs4_stateid stateid
;
3002 unsigned long timestamp
;
3003 struct nfs_fattr fattr
;
3007 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3009 struct nfs4_delegreturndata
*data
= calldata
;
3010 data
->rpc_status
= task
->tk_status
;
3011 if (data
->rpc_status
== 0)
3012 renew_lease(data
->res
.server
, data
->timestamp
);
3015 static void nfs4_delegreturn_release(void *calldata
)
3020 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3021 .rpc_call_done
= nfs4_delegreturn_done
,
3022 .rpc_release
= nfs4_delegreturn_release
,
3025 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3027 struct nfs4_delegreturndata
*data
;
3028 struct nfs_server
*server
= NFS_SERVER(inode
);
3029 struct rpc_task
*task
;
3030 struct rpc_message msg
= {
3031 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3034 struct rpc_task_setup task_setup_data
= {
3035 .rpc_client
= server
->client
,
3036 .rpc_message
= &msg
,
3037 .callback_ops
= &nfs4_delegreturn_ops
,
3038 .flags
= RPC_TASK_ASYNC
,
3042 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3045 data
->args
.fhandle
= &data
->fh
;
3046 data
->args
.stateid
= &data
->stateid
;
3047 data
->args
.bitmask
= server
->attr_bitmask
;
3048 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3049 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3050 data
->res
.fattr
= &data
->fattr
;
3051 data
->res
.server
= server
;
3052 nfs_fattr_init(data
->res
.fattr
);
3053 data
->timestamp
= jiffies
;
3054 data
->rpc_status
= 0;
3056 task_setup_data
.callback_data
= data
;
3057 msg
.rpc_argp
= &data
->args
,
3058 msg
.rpc_resp
= &data
->res
,
3059 task
= rpc_run_task(&task_setup_data
);
3061 return PTR_ERR(task
);
3064 status
= nfs4_wait_for_completion_rpc_task(task
);
3067 status
= data
->rpc_status
;
3070 nfs_refresh_inode(inode
, &data
->fattr
);
3076 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3078 struct nfs_server
*server
= NFS_SERVER(inode
);
3079 struct nfs4_exception exception
= { };
3082 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3084 case -NFS4ERR_STALE_STATEID
:
3085 case -NFS4ERR_EXPIRED
:
3089 err
= nfs4_handle_exception(server
, err
, &exception
);
3090 } while (exception
.retry
);
3094 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3095 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3098 * sleep, with exponential backoff, and retry the LOCK operation.
3100 static unsigned long
3101 nfs4_set_lock_task_retry(unsigned long timeout
)
3103 schedule_timeout_killable(timeout
);
3105 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3106 return NFS4_LOCK_MAXTIMEOUT
;
3110 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3112 struct inode
*inode
= state
->inode
;
3113 struct nfs_server
*server
= NFS_SERVER(inode
);
3114 struct nfs_client
*clp
= server
->nfs_client
;
3115 struct nfs_lockt_args arg
= {
3116 .fh
= NFS_FH(inode
),
3119 struct nfs_lockt_res res
= {
3122 struct rpc_message msg
= {
3123 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3126 .rpc_cred
= state
->owner
->so_cred
,
3128 struct nfs4_lock_state
*lsp
;
3131 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3132 status
= nfs4_set_lock_state(state
, request
);
3135 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3136 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3137 status
= rpc_call_sync(server
->client
, &msg
, 0);
3140 request
->fl_type
= F_UNLCK
;
3142 case -NFS4ERR_DENIED
:
3145 request
->fl_ops
->fl_release_private(request
);
3150 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3152 struct nfs4_exception exception
= { };
3156 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3157 _nfs4_proc_getlk(state
, cmd
, request
),
3159 } while (exception
.retry
);
3163 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3166 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3168 res
= posix_lock_file_wait(file
, fl
);
3171 res
= flock_lock_file_wait(file
, fl
);
3179 struct nfs4_unlockdata
{
3180 struct nfs_locku_args arg
;
3181 struct nfs_locku_res res
;
3182 struct nfs4_lock_state
*lsp
;
3183 struct nfs_open_context
*ctx
;
3184 struct file_lock fl
;
3185 const struct nfs_server
*server
;
3186 unsigned long timestamp
;
3189 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3190 struct nfs_open_context
*ctx
,
3191 struct nfs4_lock_state
*lsp
,
3192 struct nfs_seqid
*seqid
)
3194 struct nfs4_unlockdata
*p
;
3195 struct inode
*inode
= lsp
->ls_state
->inode
;
3197 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
3200 p
->arg
.fh
= NFS_FH(inode
);
3202 p
->arg
.seqid
= seqid
;
3203 p
->res
.seqid
= seqid
;
3204 p
->arg
.stateid
= &lsp
->ls_stateid
;
3206 atomic_inc(&lsp
->ls_count
);
3207 /* Ensure we don't close file until we're done freeing locks! */
3208 p
->ctx
= get_nfs_open_context(ctx
);
3209 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3210 p
->server
= NFS_SERVER(inode
);
3214 static void nfs4_locku_release_calldata(void *data
)
3216 struct nfs4_unlockdata
*calldata
= data
;
3217 nfs_free_seqid(calldata
->arg
.seqid
);
3218 nfs4_put_lock_state(calldata
->lsp
);
3219 put_nfs_open_context(calldata
->ctx
);
3223 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3225 struct nfs4_unlockdata
*calldata
= data
;
3227 if (RPC_ASSASSINATED(task
))
3229 switch (task
->tk_status
) {
3231 memcpy(calldata
->lsp
->ls_stateid
.data
,
3232 calldata
->res
.stateid
.data
,
3233 sizeof(calldata
->lsp
->ls_stateid
.data
));
3234 renew_lease(calldata
->server
, calldata
->timestamp
);
3236 case -NFS4ERR_BAD_STATEID
:
3237 case -NFS4ERR_OLD_STATEID
:
3238 case -NFS4ERR_STALE_STATEID
:
3239 case -NFS4ERR_EXPIRED
:
3242 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
3243 rpc_restart_call(task
);
3247 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3249 struct nfs4_unlockdata
*calldata
= data
;
3251 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3253 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3254 /* Note: exit _without_ running nfs4_locku_done */
3255 task
->tk_action
= NULL
;
3258 calldata
->timestamp
= jiffies
;
3259 rpc_call_start(task
);
3262 static const struct rpc_call_ops nfs4_locku_ops
= {
3263 .rpc_call_prepare
= nfs4_locku_prepare
,
3264 .rpc_call_done
= nfs4_locku_done
,
3265 .rpc_release
= nfs4_locku_release_calldata
,
3268 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3269 struct nfs_open_context
*ctx
,
3270 struct nfs4_lock_state
*lsp
,
3271 struct nfs_seqid
*seqid
)
3273 struct nfs4_unlockdata
*data
;
3274 struct rpc_message msg
= {
3275 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3276 .rpc_cred
= ctx
->cred
,
3278 struct rpc_task_setup task_setup_data
= {
3279 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
3280 .rpc_message
= &msg
,
3281 .callback_ops
= &nfs4_locku_ops
,
3282 .workqueue
= nfsiod_workqueue
,
3283 .flags
= RPC_TASK_ASYNC
,
3286 /* Ensure this is an unlock - when canceling a lock, the
3287 * canceled lock is passed in, and it won't be an unlock.
3289 fl
->fl_type
= F_UNLCK
;
3291 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3293 nfs_free_seqid(seqid
);
3294 return ERR_PTR(-ENOMEM
);
3297 msg
.rpc_argp
= &data
->arg
,
3298 msg
.rpc_resp
= &data
->res
,
3299 task_setup_data
.callback_data
= data
;
3300 return rpc_run_task(&task_setup_data
);
3303 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3305 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3306 struct nfs_seqid
*seqid
;
3307 struct nfs4_lock_state
*lsp
;
3308 struct rpc_task
*task
;
3310 unsigned char fl_flags
= request
->fl_flags
;
3312 status
= nfs4_set_lock_state(state
, request
);
3313 /* Unlock _before_ we do the RPC call */
3314 request
->fl_flags
|= FL_EXISTS
;
3315 down_read(&nfsi
->rwsem
);
3316 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
3317 up_read(&nfsi
->rwsem
);
3320 up_read(&nfsi
->rwsem
);
3323 /* Is this a delegated lock? */
3324 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3326 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3327 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3331 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
3332 status
= PTR_ERR(task
);
3335 status
= nfs4_wait_for_completion_rpc_task(task
);
3338 request
->fl_flags
= fl_flags
;
3342 struct nfs4_lockdata
{
3343 struct nfs_lock_args arg
;
3344 struct nfs_lock_res res
;
3345 struct nfs4_lock_state
*lsp
;
3346 struct nfs_open_context
*ctx
;
3347 struct file_lock fl
;
3348 unsigned long timestamp
;
3353 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3354 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3356 struct nfs4_lockdata
*p
;
3357 struct inode
*inode
= lsp
->ls_state
->inode
;
3358 struct nfs_server
*server
= NFS_SERVER(inode
);
3360 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3364 p
->arg
.fh
= NFS_FH(inode
);
3366 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
);
3367 if (p
->arg
.open_seqid
== NULL
)
3369 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3370 if (p
->arg
.lock_seqid
== NULL
)
3371 goto out_free_seqid
;
3372 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3373 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3374 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3375 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
3377 atomic_inc(&lsp
->ls_count
);
3378 p
->ctx
= get_nfs_open_context(ctx
);
3379 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3382 nfs_free_seqid(p
->arg
.open_seqid
);
3388 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3390 struct nfs4_lockdata
*data
= calldata
;
3391 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3393 dprintk("%s: begin!\n", __func__
);
3394 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3396 /* Do we need to do an open_to_lock_owner? */
3397 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3398 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
3400 data
->arg
.open_stateid
= &state
->stateid
;
3401 data
->arg
.new_lock_owner
= 1;
3402 data
->res
.open_seqid
= data
->arg
.open_seqid
;
3404 data
->arg
.new_lock_owner
= 0;
3405 data
->timestamp
= jiffies
;
3406 rpc_call_start(task
);
3407 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
3410 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3412 struct nfs4_lockdata
*data
= calldata
;
3414 dprintk("%s: begin!\n", __func__
);
3416 data
->rpc_status
= task
->tk_status
;
3417 if (RPC_ASSASSINATED(task
))
3419 if (data
->arg
.new_lock_owner
!= 0) {
3420 if (data
->rpc_status
== 0)
3421 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3425 if (data
->rpc_status
== 0) {
3426 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3427 sizeof(data
->lsp
->ls_stateid
.data
));
3428 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3429 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3432 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
3435 static void nfs4_lock_release(void *calldata
)
3437 struct nfs4_lockdata
*data
= calldata
;
3439 dprintk("%s: begin!\n", __func__
);
3440 nfs_free_seqid(data
->arg
.open_seqid
);
3441 if (data
->cancelled
!= 0) {
3442 struct rpc_task
*task
;
3443 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3444 data
->arg
.lock_seqid
);
3447 dprintk("%s: cancelling lock!\n", __func__
);
3449 nfs_free_seqid(data
->arg
.lock_seqid
);
3450 nfs4_put_lock_state(data
->lsp
);
3451 put_nfs_open_context(data
->ctx
);
3453 dprintk("%s: done!\n", __func__
);
3456 static const struct rpc_call_ops nfs4_lock_ops
= {
3457 .rpc_call_prepare
= nfs4_lock_prepare
,
3458 .rpc_call_done
= nfs4_lock_done
,
3459 .rpc_release
= nfs4_lock_release
,
3462 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3464 struct nfs4_lockdata
*data
;
3465 struct rpc_task
*task
;
3466 struct rpc_message msg
= {
3467 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3468 .rpc_cred
= state
->owner
->so_cred
,
3470 struct rpc_task_setup task_setup_data
= {
3471 .rpc_client
= NFS_CLIENT(state
->inode
),
3472 .rpc_message
= &msg
,
3473 .callback_ops
= &nfs4_lock_ops
,
3474 .workqueue
= nfsiod_workqueue
,
3475 .flags
= RPC_TASK_ASYNC
,
3479 dprintk("%s: begin!\n", __func__
);
3480 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
3481 fl
->fl_u
.nfs4_fl
.owner
);
3485 data
->arg
.block
= 1;
3487 data
->arg
.reclaim
= 1;
3488 msg
.rpc_argp
= &data
->arg
,
3489 msg
.rpc_resp
= &data
->res
,
3490 task_setup_data
.callback_data
= data
;
3491 task
= rpc_run_task(&task_setup_data
);
3493 return PTR_ERR(task
);
3494 ret
= nfs4_wait_for_completion_rpc_task(task
);
3496 ret
= data
->rpc_status
;
3497 if (ret
== -NFS4ERR_DENIED
)
3500 data
->cancelled
= 1;
3502 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
3506 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
3508 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3509 struct nfs4_exception exception
= { };
3513 /* Cache the lock if possible... */
3514 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3516 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
3517 if (err
!= -NFS4ERR_DELAY
)
3519 nfs4_handle_exception(server
, err
, &exception
);
3520 } while (exception
.retry
);
3524 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
3526 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3527 struct nfs4_exception exception
= { };
3530 err
= nfs4_set_lock_state(state
, request
);
3534 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3536 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
3537 if (err
!= -NFS4ERR_DELAY
)
3539 nfs4_handle_exception(server
, err
, &exception
);
3540 } while (exception
.retry
);
3544 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3546 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3547 unsigned char fl_flags
= request
->fl_flags
;
3550 /* Is this a delegated open? */
3551 status
= nfs4_set_lock_state(state
, request
);
3554 request
->fl_flags
|= FL_ACCESS
;
3555 status
= do_vfs_lock(request
->fl_file
, request
);
3558 down_read(&nfsi
->rwsem
);
3559 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3560 /* Yes: cache locks! */
3561 /* ...but avoid races with delegation recall... */
3562 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
3563 status
= do_vfs_lock(request
->fl_file
, request
);
3566 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
3569 /* Note: we always want to sleep here! */
3570 request
->fl_flags
= fl_flags
| FL_SLEEP
;
3571 if (do_vfs_lock(request
->fl_file
, request
) < 0)
3572 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
3574 up_read(&nfsi
->rwsem
);
3576 request
->fl_flags
= fl_flags
;
3580 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3582 struct nfs4_exception exception
= { };
3586 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3587 _nfs4_proc_setlk(state
, cmd
, request
),
3589 } while (exception
.retry
);
3594 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
3596 struct nfs_open_context
*ctx
;
3597 struct nfs4_state
*state
;
3598 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
3601 /* verify open state */
3602 ctx
= nfs_file_open_context(filp
);
3605 if (request
->fl_start
< 0 || request
->fl_end
< 0)
3609 return nfs4_proc_getlk(state
, F_GETLK
, request
);
3611 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
3614 if (request
->fl_type
== F_UNLCK
)
3615 return nfs4_proc_unlck(state
, cmd
, request
);
3618 status
= nfs4_proc_setlk(state
, cmd
, request
);
3619 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
3621 timeout
= nfs4_set_lock_task_retry(timeout
);
3622 status
= -ERESTARTSYS
;
3625 } while(status
< 0);
3629 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
3631 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3632 struct nfs4_exception exception
= { };
3635 err
= nfs4_set_lock_state(state
, fl
);
3639 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
3640 if (err
!= -NFS4ERR_DELAY
)
3642 err
= nfs4_handle_exception(server
, err
, &exception
);
3643 } while (exception
.retry
);
3648 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
3650 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
3651 size_t buflen
, int flags
)
3653 struct inode
*inode
= dentry
->d_inode
;
3655 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3658 return nfs4_proc_set_acl(inode
, buf
, buflen
);
3661 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
3662 * and that's what we'll do for e.g. user attributes that haven't been set.
3663 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
3664 * attributes in kernel-managed attribute namespaces. */
3665 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
3668 struct inode
*inode
= dentry
->d_inode
;
3670 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3673 return nfs4_proc_get_acl(inode
, buf
, buflen
);
3676 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
3678 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
3680 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
3682 if (buf
&& buflen
< len
)
3685 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
3689 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
3691 if (!((fattr
->valid
& NFS_ATTR_FATTR_FILEID
) &&
3692 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
3693 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
3696 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3697 NFS_ATTR_FATTR_NLINK
;
3698 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3702 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
3703 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
3705 struct nfs_server
*server
= NFS_SERVER(dir
);
3707 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
3708 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
3710 struct nfs4_fs_locations_arg args
= {
3711 .dir_fh
= NFS_FH(dir
),
3716 struct rpc_message msg
= {
3717 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
3719 .rpc_resp
= fs_locations
,
3723 dprintk("%s: start\n", __func__
);
3724 nfs_fattr_init(&fs_locations
->fattr
);
3725 fs_locations
->server
= server
;
3726 fs_locations
->nlocations
= 0;
3727 status
= rpc_call_sync(server
->client
, &msg
, 0);
3728 nfs_fixup_referral_attributes(&fs_locations
->fattr
);
3729 dprintk("%s: returned status = %d\n", __func__
, status
);
3733 #ifdef CONFIG_NFS_V4_1
3734 /* Destroy the slot table */
3735 static void nfs4_destroy_slot_table(struct nfs4_session
*session
)
3737 if (session
->fc_slot_table
.slots
== NULL
)
3739 kfree(session
->fc_slot_table
.slots
);
3740 session
->fc_slot_table
.slots
= NULL
;
3744 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
3746 struct nfs4_session
*session
;
3747 struct nfs4_slot_table
*tbl
;
3749 session
= kzalloc(sizeof(struct nfs4_session
), GFP_KERNEL
);
3752 tbl
= &session
->fc_slot_table
;
3753 spin_lock_init(&tbl
->slot_tbl_lock
);
3754 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "Slot table");
3759 void nfs4_destroy_session(struct nfs4_session
*session
)
3761 nfs4_destroy_slot_table(session
);
3765 #endif /* CONFIG_NFS_V4_1 */
3767 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops
= {
3768 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
3769 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
3770 .recover_open
= nfs4_open_reclaim
,
3771 .recover_lock
= nfs4_lock_reclaim
,
3774 struct nfs4_state_recovery_ops nfs4_nograce_recovery_ops
= {
3775 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
3776 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
3777 .recover_open
= nfs4_open_expired
,
3778 .recover_lock
= nfs4_lock_expired
,
3781 static const struct inode_operations nfs4_file_inode_operations
= {
3782 .permission
= nfs_permission
,
3783 .getattr
= nfs_getattr
,
3784 .setattr
= nfs_setattr
,
3785 .getxattr
= nfs4_getxattr
,
3786 .setxattr
= nfs4_setxattr
,
3787 .listxattr
= nfs4_listxattr
,
3790 const struct nfs_rpc_ops nfs_v4_clientops
= {
3791 .version
= 4, /* protocol version */
3792 .dentry_ops
= &nfs4_dentry_operations
,
3793 .dir_inode_ops
= &nfs4_dir_inode_operations
,
3794 .file_inode_ops
= &nfs4_file_inode_operations
,
3795 .getroot
= nfs4_proc_get_root
,
3796 .getattr
= nfs4_proc_getattr
,
3797 .setattr
= nfs4_proc_setattr
,
3798 .lookupfh
= nfs4_proc_lookupfh
,
3799 .lookup
= nfs4_proc_lookup
,
3800 .access
= nfs4_proc_access
,
3801 .readlink
= nfs4_proc_readlink
,
3802 .create
= nfs4_proc_create
,
3803 .remove
= nfs4_proc_remove
,
3804 .unlink_setup
= nfs4_proc_unlink_setup
,
3805 .unlink_done
= nfs4_proc_unlink_done
,
3806 .rename
= nfs4_proc_rename
,
3807 .link
= nfs4_proc_link
,
3808 .symlink
= nfs4_proc_symlink
,
3809 .mkdir
= nfs4_proc_mkdir
,
3810 .rmdir
= nfs4_proc_remove
,
3811 .readdir
= nfs4_proc_readdir
,
3812 .mknod
= nfs4_proc_mknod
,
3813 .statfs
= nfs4_proc_statfs
,
3814 .fsinfo
= nfs4_proc_fsinfo
,
3815 .pathconf
= nfs4_proc_pathconf
,
3816 .set_capabilities
= nfs4_server_capabilities
,
3817 .decode_dirent
= nfs4_decode_dirent
,
3818 .read_setup
= nfs4_proc_read_setup
,
3819 .read_done
= nfs4_read_done
,
3820 .write_setup
= nfs4_proc_write_setup
,
3821 .write_done
= nfs4_write_done
,
3822 .commit_setup
= nfs4_proc_commit_setup
,
3823 .commit_done
= nfs4_commit_done
,
3824 .lock
= nfs4_proc_lock
,
3825 .clear_acl_cache
= nfs4_zap_acl_attr
,
3826 .close_context
= nfs4_close_context
,