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 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_bit_killable(void *word
)
198 if (fatal_signal_pending(current
))
204 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
210 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
211 nfs4_wait_bit_killable
, TASK_KILLABLE
);
215 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
222 *timeout
= NFS4_POLL_RETRY_MIN
;
223 if (*timeout
> NFS4_POLL_RETRY_MAX
)
224 *timeout
= NFS4_POLL_RETRY_MAX
;
225 schedule_timeout_killable(*timeout
);
226 if (fatal_signal_pending(current
))
232 /* This is the error handling routine for processes that are allowed
235 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
237 struct nfs_client
*clp
= server
->nfs_client
;
238 struct nfs4_state
*state
= exception
->state
;
241 exception
->retry
= 0;
245 case -NFS4ERR_ADMIN_REVOKED
:
246 case -NFS4ERR_BAD_STATEID
:
247 case -NFS4ERR_OPENMODE
:
250 nfs4_state_mark_reclaim_nograce(clp
, state
);
251 case -NFS4ERR_STALE_CLIENTID
:
252 case -NFS4ERR_STALE_STATEID
:
253 case -NFS4ERR_EXPIRED
:
254 nfs4_schedule_state_recovery(clp
);
255 ret
= nfs4_wait_clnt_recover(clp
);
257 exception
->retry
= 1;
259 case -NFS4ERR_FILE_OPEN
:
262 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
265 case -NFS4ERR_OLD_STATEID
:
266 exception
->retry
= 1;
268 /* We failed to handle the error */
269 return nfs4_map_errors(ret
);
273 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
275 struct nfs_client
*clp
= server
->nfs_client
;
276 spin_lock(&clp
->cl_lock
);
277 if (time_before(clp
->cl_last_renewal
,timestamp
))
278 clp
->cl_last_renewal
= timestamp
;
279 spin_unlock(&clp
->cl_lock
);
282 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
284 struct nfs_inode
*nfsi
= NFS_I(dir
);
286 spin_lock(&dir
->i_lock
);
287 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
288 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
289 nfs_force_lookup_revalidate(dir
);
290 nfsi
->change_attr
= cinfo
->after
;
291 spin_unlock(&dir
->i_lock
);
294 struct nfs4_opendata
{
296 struct nfs_openargs o_arg
;
297 struct nfs_openres o_res
;
298 struct nfs_open_confirmargs c_arg
;
299 struct nfs_open_confirmres c_res
;
300 struct nfs_fattr f_attr
;
301 struct nfs_fattr dir_attr
;
304 struct nfs4_state_owner
*owner
;
305 struct nfs4_state
*state
;
307 unsigned long timestamp
;
308 unsigned int rpc_done
: 1;
314 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
316 p
->o_res
.f_attr
= &p
->f_attr
;
317 p
->o_res
.dir_attr
= &p
->dir_attr
;
318 p
->o_res
.seqid
= p
->o_arg
.seqid
;
319 p
->c_res
.seqid
= p
->c_arg
.seqid
;
320 p
->o_res
.server
= p
->o_arg
.server
;
321 nfs_fattr_init(&p
->f_attr
);
322 nfs_fattr_init(&p
->dir_attr
);
325 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
326 struct nfs4_state_owner
*sp
, int flags
,
327 const struct iattr
*attrs
)
329 struct dentry
*parent
= dget_parent(path
->dentry
);
330 struct inode
*dir
= parent
->d_inode
;
331 struct nfs_server
*server
= NFS_SERVER(dir
);
332 struct nfs4_opendata
*p
;
334 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
337 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
338 if (p
->o_arg
.seqid
== NULL
)
340 p
->path
.mnt
= mntget(path
->mnt
);
341 p
->path
.dentry
= dget(path
->dentry
);
344 atomic_inc(&sp
->so_count
);
345 p
->o_arg
.fh
= NFS_FH(dir
);
346 p
->o_arg
.open_flags
= flags
,
347 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
348 p
->o_arg
.id
= sp
->so_owner_id
.id
;
349 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
350 p
->o_arg
.server
= server
;
351 p
->o_arg
.bitmask
= server
->attr_bitmask
;
352 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
353 if (flags
& O_EXCL
) {
354 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
357 } else if (flags
& O_CREAT
) {
358 p
->o_arg
.u
.attrs
= &p
->attrs
;
359 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
361 p
->c_arg
.fh
= &p
->o_res
.fh
;
362 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
363 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
364 nfs4_init_opendata_res(p
);
374 static void nfs4_opendata_free(struct kref
*kref
)
376 struct nfs4_opendata
*p
= container_of(kref
,
377 struct nfs4_opendata
, kref
);
379 nfs_free_seqid(p
->o_arg
.seqid
);
380 if (p
->state
!= NULL
)
381 nfs4_put_open_state(p
->state
);
382 nfs4_put_state_owner(p
->owner
);
388 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
391 kref_put(&p
->kref
, nfs4_opendata_free
);
394 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
398 ret
= rpc_wait_for_completion_task(task
);
402 static int can_open_cached(struct nfs4_state
*state
, int mode
)
405 switch (mode
& (FMODE_READ
|FMODE_WRITE
|O_EXCL
)) {
407 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0;
410 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0;
412 case FMODE_READ
|FMODE_WRITE
:
413 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0;
418 static int can_open_delegated(struct nfs_delegation
*delegation
, mode_t open_flags
)
420 if ((delegation
->type
& open_flags
) != open_flags
)
422 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
424 nfs_mark_delegation_referenced(delegation
);
428 static void update_open_stateflags(struct nfs4_state
*state
, mode_t open_flags
)
430 switch (open_flags
) {
437 case FMODE_READ
|FMODE_WRITE
:
440 nfs4_state_set_mode_locked(state
, state
->state
| open_flags
);
443 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, int open_flags
)
445 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
446 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
447 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
448 switch (open_flags
) {
450 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
453 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
455 case FMODE_READ
|FMODE_WRITE
:
456 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
460 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, int open_flags
)
462 write_seqlock(&state
->seqlock
);
463 nfs_set_open_stateid_locked(state
, stateid
, open_flags
);
464 write_sequnlock(&state
->seqlock
);
467 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, int open_flags
)
470 * Protect the call to nfs4_state_set_mode_locked and
471 * serialise the stateid update
473 write_seqlock(&state
->seqlock
);
474 if (deleg_stateid
!= NULL
) {
475 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
476 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
478 if (open_stateid
!= NULL
)
479 nfs_set_open_stateid_locked(state
, open_stateid
, open_flags
);
480 write_sequnlock(&state
->seqlock
);
481 spin_lock(&state
->owner
->so_lock
);
482 update_open_stateflags(state
, open_flags
);
483 spin_unlock(&state
->owner
->so_lock
);
486 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, int open_flags
)
488 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
489 struct nfs_delegation
*deleg_cur
;
492 open_flags
&= (FMODE_READ
|FMODE_WRITE
);
495 deleg_cur
= rcu_dereference(nfsi
->delegation
);
496 if (deleg_cur
== NULL
)
499 spin_lock(&deleg_cur
->lock
);
500 if (nfsi
->delegation
!= deleg_cur
||
501 (deleg_cur
->type
& open_flags
) != open_flags
)
502 goto no_delegation_unlock
;
504 if (delegation
== NULL
)
505 delegation
= &deleg_cur
->stateid
;
506 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
507 goto no_delegation_unlock
;
509 nfs_mark_delegation_referenced(deleg_cur
);
510 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, open_flags
);
512 no_delegation_unlock
:
513 spin_unlock(&deleg_cur
->lock
);
517 if (!ret
&& open_stateid
!= NULL
) {
518 __update_open_stateid(state
, open_stateid
, NULL
, open_flags
);
526 static void nfs4_return_incompatible_delegation(struct inode
*inode
, mode_t open_flags
)
528 struct nfs_delegation
*delegation
;
531 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
532 if (delegation
== NULL
|| (delegation
->type
& open_flags
) == open_flags
) {
537 nfs_inode_return_delegation(inode
);
540 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
542 struct nfs4_state
*state
= opendata
->state
;
543 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
544 struct nfs_delegation
*delegation
;
545 int open_mode
= opendata
->o_arg
.open_flags
& (FMODE_READ
|FMODE_WRITE
|O_EXCL
);
546 nfs4_stateid stateid
;
550 if (can_open_cached(state
, open_mode
)) {
551 spin_lock(&state
->owner
->so_lock
);
552 if (can_open_cached(state
, open_mode
)) {
553 update_open_stateflags(state
, open_mode
);
554 spin_unlock(&state
->owner
->so_lock
);
555 goto out_return_state
;
557 spin_unlock(&state
->owner
->so_lock
);
560 delegation
= rcu_dereference(nfsi
->delegation
);
561 if (delegation
== NULL
||
562 !can_open_delegated(delegation
, open_mode
)) {
566 /* Save the delegation */
567 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
569 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
574 /* Try to update the stateid using the delegation */
575 if (update_open_stateid(state
, NULL
, &stateid
, open_mode
))
576 goto out_return_state
;
581 atomic_inc(&state
->count
);
585 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
588 struct nfs4_state
*state
= NULL
;
589 struct nfs_delegation
*delegation
;
592 if (!data
->rpc_done
) {
593 state
= nfs4_try_open_cached(data
);
598 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
600 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
601 ret
= PTR_ERR(inode
);
605 state
= nfs4_get_open_state(inode
, data
->owner
);
608 if (data
->o_res
.delegation_type
!= 0) {
609 int delegation_flags
= 0;
612 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
614 delegation_flags
= delegation
->flags
;
616 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
617 nfs_inode_set_delegation(state
->inode
,
618 data
->owner
->so_cred
,
621 nfs_inode_reclaim_delegation(state
->inode
,
622 data
->owner
->so_cred
,
626 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
627 data
->o_arg
.open_flags
);
637 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
639 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
640 struct nfs_open_context
*ctx
;
642 spin_lock(&state
->inode
->i_lock
);
643 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
644 if (ctx
->state
!= state
)
646 get_nfs_open_context(ctx
);
647 spin_unlock(&state
->inode
->i_lock
);
650 spin_unlock(&state
->inode
->i_lock
);
651 return ERR_PTR(-ENOENT
);
654 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
656 struct nfs4_opendata
*opendata
;
658 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, NULL
);
659 if (opendata
== NULL
)
660 return ERR_PTR(-ENOMEM
);
661 opendata
->state
= state
;
662 atomic_inc(&state
->count
);
666 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, mode_t openflags
, struct nfs4_state
**res
)
668 struct nfs4_state
*newstate
;
671 opendata
->o_arg
.open_flags
= openflags
;
672 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
673 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
674 nfs4_init_opendata_res(opendata
);
675 ret
= _nfs4_proc_open(opendata
);
678 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
679 if (IS_ERR(newstate
))
680 return PTR_ERR(newstate
);
681 nfs4_close_state(&opendata
->path
, newstate
, openflags
);
686 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
688 struct nfs4_state
*newstate
;
691 /* memory barrier prior to reading state->n_* */
692 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
694 if (state
->n_rdwr
!= 0) {
695 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
698 if (newstate
!= state
)
701 if (state
->n_wronly
!= 0) {
702 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
705 if (newstate
!= state
)
708 if (state
->n_rdonly
!= 0) {
709 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
712 if (newstate
!= state
)
716 * We may have performed cached opens for all three recoveries.
717 * Check if we need to update the current stateid.
719 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
720 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
721 write_seqlock(&state
->seqlock
);
722 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
723 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
724 write_sequnlock(&state
->seqlock
);
731 * reclaim state on the server after a reboot.
733 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
735 struct nfs_delegation
*delegation
;
736 struct nfs4_opendata
*opendata
;
737 int delegation_type
= 0;
740 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
741 if (IS_ERR(opendata
))
742 return PTR_ERR(opendata
);
743 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
744 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
746 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
747 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
748 delegation_type
= delegation
->type
;
750 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
751 status
= nfs4_open_recover(opendata
, state
);
752 nfs4_opendata_put(opendata
);
756 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
758 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
759 struct nfs4_exception exception
= { };
762 err
= _nfs4_do_open_reclaim(ctx
, state
);
763 if (err
!= -NFS4ERR_DELAY
)
765 nfs4_handle_exception(server
, err
, &exception
);
766 } while (exception
.retry
);
770 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
772 struct nfs_open_context
*ctx
;
775 ctx
= nfs4_state_find_open_context(state
);
778 ret
= nfs4_do_open_reclaim(ctx
, state
);
779 put_nfs_open_context(ctx
);
783 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
785 struct nfs4_opendata
*opendata
;
788 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
789 if (IS_ERR(opendata
))
790 return PTR_ERR(opendata
);
791 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
792 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
793 sizeof(opendata
->o_arg
.u
.delegation
.data
));
794 ret
= nfs4_open_recover(opendata
, state
);
795 nfs4_opendata_put(opendata
);
799 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
801 struct nfs4_exception exception
= { };
802 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
805 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
809 case -NFS4ERR_STALE_CLIENTID
:
810 case -NFS4ERR_STALE_STATEID
:
811 case -NFS4ERR_EXPIRED
:
812 /* Don't recall a delegation if it was lost */
813 nfs4_schedule_state_recovery(server
->nfs_client
);
816 err
= nfs4_handle_exception(server
, err
, &exception
);
817 } while (exception
.retry
);
821 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
823 struct nfs4_opendata
*data
= calldata
;
825 data
->rpc_status
= task
->tk_status
;
826 if (RPC_ASSASSINATED(task
))
828 if (data
->rpc_status
== 0) {
829 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
830 sizeof(data
->o_res
.stateid
.data
));
831 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
832 renew_lease(data
->o_res
.server
, data
->timestamp
);
837 static void nfs4_open_confirm_release(void *calldata
)
839 struct nfs4_opendata
*data
= calldata
;
840 struct nfs4_state
*state
= NULL
;
842 /* If this request hasn't been cancelled, do nothing */
843 if (data
->cancelled
== 0)
845 /* In case of error, no cleanup! */
848 state
= nfs4_opendata_to_nfs4_state(data
);
850 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
852 nfs4_opendata_put(data
);
855 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
856 .rpc_call_done
= nfs4_open_confirm_done
,
857 .rpc_release
= nfs4_open_confirm_release
,
861 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
863 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
865 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
866 struct rpc_task
*task
;
867 struct rpc_message msg
= {
868 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
869 .rpc_argp
= &data
->c_arg
,
870 .rpc_resp
= &data
->c_res
,
871 .rpc_cred
= data
->owner
->so_cred
,
873 struct rpc_task_setup task_setup_data
= {
874 .rpc_client
= server
->client
,
876 .callback_ops
= &nfs4_open_confirm_ops
,
877 .callback_data
= data
,
878 .workqueue
= nfsiod_workqueue
,
879 .flags
= RPC_TASK_ASYNC
,
883 kref_get(&data
->kref
);
885 data
->rpc_status
= 0;
886 data
->timestamp
= jiffies
;
887 task
= rpc_run_task(&task_setup_data
);
889 return PTR_ERR(task
);
890 status
= nfs4_wait_for_completion_rpc_task(task
);
895 status
= data
->rpc_status
;
900 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
902 struct nfs4_opendata
*data
= calldata
;
903 struct nfs4_state_owner
*sp
= data
->owner
;
905 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
908 * Check if we still need to send an OPEN call, or if we can use
909 * a delegation instead.
911 if (data
->state
!= NULL
) {
912 struct nfs_delegation
*delegation
;
914 if (can_open_cached(data
->state
, data
->o_arg
.open_flags
& (FMODE_READ
|FMODE_WRITE
|O_EXCL
)))
917 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
918 if (delegation
!= NULL
&&
919 test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) == 0) {
925 /* Update sequence id. */
926 data
->o_arg
.id
= sp
->so_owner_id
.id
;
927 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
928 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
929 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
930 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
932 data
->timestamp
= jiffies
;
933 rpc_call_start(task
);
936 task
->tk_action
= NULL
;
940 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
942 struct nfs4_opendata
*data
= calldata
;
944 data
->rpc_status
= task
->tk_status
;
945 if (RPC_ASSASSINATED(task
))
947 if (task
->tk_status
== 0) {
948 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
952 data
->rpc_status
= -ELOOP
;
955 data
->rpc_status
= -EISDIR
;
958 data
->rpc_status
= -ENOTDIR
;
960 renew_lease(data
->o_res
.server
, data
->timestamp
);
961 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
962 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
967 static void nfs4_open_release(void *calldata
)
969 struct nfs4_opendata
*data
= calldata
;
970 struct nfs4_state
*state
= NULL
;
972 /* If this request hasn't been cancelled, do nothing */
973 if (data
->cancelled
== 0)
975 /* In case of error, no cleanup! */
976 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
978 /* In case we need an open_confirm, no cleanup! */
979 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
981 state
= nfs4_opendata_to_nfs4_state(data
);
983 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
985 nfs4_opendata_put(data
);
988 static const struct rpc_call_ops nfs4_open_ops
= {
989 .rpc_call_prepare
= nfs4_open_prepare
,
990 .rpc_call_done
= nfs4_open_done
,
991 .rpc_release
= nfs4_open_release
,
995 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
997 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
999 struct inode
*dir
= data
->dir
->d_inode
;
1000 struct nfs_server
*server
= NFS_SERVER(dir
);
1001 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1002 struct nfs_openres
*o_res
= &data
->o_res
;
1003 struct rpc_task
*task
;
1004 struct rpc_message msg
= {
1005 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1008 .rpc_cred
= data
->owner
->so_cred
,
1010 struct rpc_task_setup task_setup_data
= {
1011 .rpc_client
= server
->client
,
1012 .rpc_message
= &msg
,
1013 .callback_ops
= &nfs4_open_ops
,
1014 .callback_data
= data
,
1015 .workqueue
= nfsiod_workqueue
,
1016 .flags
= RPC_TASK_ASYNC
,
1020 kref_get(&data
->kref
);
1022 data
->rpc_status
= 0;
1023 data
->cancelled
= 0;
1024 task
= rpc_run_task(&task_setup_data
);
1026 return PTR_ERR(task
);
1027 status
= nfs4_wait_for_completion_rpc_task(task
);
1029 data
->cancelled
= 1;
1032 status
= data
->rpc_status
;
1034 if (status
!= 0 || !data
->rpc_done
)
1037 if (o_res
->fh
.size
== 0)
1038 _nfs4_proc_lookup(dir
, o_arg
->name
, &o_res
->fh
, o_res
->f_attr
);
1040 if (o_arg
->open_flags
& O_CREAT
) {
1041 update_changeattr(dir
, &o_res
->cinfo
);
1042 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1044 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1045 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1046 status
= _nfs4_proc_open_confirm(data
);
1050 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1051 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1055 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1057 struct nfs_client
*clp
= server
->nfs_client
;
1061 ret
= nfs4_wait_clnt_recover(clp
);
1064 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1065 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1067 nfs4_schedule_state_recovery(clp
);
1074 * reclaim state on the server after a network partition.
1075 * Assumes caller holds the appropriate lock
1077 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1079 struct nfs4_opendata
*opendata
;
1082 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1083 if (IS_ERR(opendata
))
1084 return PTR_ERR(opendata
);
1085 ret
= nfs4_open_recover(opendata
, state
);
1087 d_drop(ctx
->path
.dentry
);
1088 nfs4_opendata_put(opendata
);
1092 static inline int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1094 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1095 struct nfs4_exception exception
= { };
1099 err
= _nfs4_open_expired(ctx
, state
);
1100 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
, 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
, flags
& (FMODE_READ
|FMODE_WRITE
));
1158 opendata
= nfs4_opendata_alloc(path
, sp
, 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
, 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
, 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
.open_flags
== 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
.open_flags
= 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
.open_flags
= 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
.open_flags
= 0;
1434 calldata
->arg
.bitmask
= server
->attr_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
)
1465 /* If the open_intent is for execute, we have an extra check to make */
1466 if (nd
->intent
.open
.flags
& 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
, nd
->intent
.open
.flags
);
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
;
1499 if (nd
->flags
& LOOKUP_CREATE
) {
1500 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1501 attr
.ia_valid
= ATTR_MODE
;
1502 if (!IS_POSIXACL(dir
))
1503 attr
.ia_mode
&= ~current
->fs
->umask
;
1506 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1509 cred
= rpc_lookup_cred();
1511 return (struct dentry
*)cred
;
1512 parent
= dentry
->d_parent
;
1513 /* Protect against concurrent sillydeletes */
1514 nfs_block_sillyrename(parent
);
1515 state
= nfs4_do_open(dir
, &path
, nd
->intent
.open
.flags
, &attr
, cred
);
1517 if (IS_ERR(state
)) {
1518 if (PTR_ERR(state
) == -ENOENT
) {
1519 d_add(dentry
, NULL
);
1520 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1522 nfs_unblock_sillyrename(parent
);
1523 return (struct dentry
*)state
;
1525 res
= d_add_unique(dentry
, igrab(state
->inode
));
1528 nfs_set_verifier(path
.dentry
, nfs_save_change_attribute(dir
));
1529 nfs_unblock_sillyrename(parent
);
1530 nfs4_intent_set_file(nd
, &path
, state
);
1535 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1537 struct path path
= {
1538 .mnt
= nd
->path
.mnt
,
1541 struct rpc_cred
*cred
;
1542 struct nfs4_state
*state
;
1544 cred
= rpc_lookup_cred();
1546 return PTR_ERR(cred
);
1547 state
= nfs4_do_open(dir
, &path
, openflags
, NULL
, cred
);
1549 if (IS_ERR(state
)) {
1550 switch (PTR_ERR(state
)) {
1556 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1562 if (state
->inode
== dentry
->d_inode
) {
1563 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1564 nfs4_intent_set_file(nd
, &path
, state
);
1567 nfs4_close_sync(&path
, state
, openflags
);
1574 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1576 struct nfs4_server_caps_res res
= {};
1577 struct rpc_message msg
= {
1578 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1579 .rpc_argp
= fhandle
,
1584 status
= rpc_call_sync(server
->client
, &msg
, 0);
1586 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
1587 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
1588 server
->caps
|= NFS_CAP_ACLS
;
1589 if (res
.has_links
!= 0)
1590 server
->caps
|= NFS_CAP_HARDLINKS
;
1591 if (res
.has_symlinks
!= 0)
1592 server
->caps
|= NFS_CAP_SYMLINKS
;
1593 server
->acl_bitmask
= res
.acl_bitmask
;
1598 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1600 struct nfs4_exception exception
= { };
1603 err
= nfs4_handle_exception(server
,
1604 _nfs4_server_capabilities(server
, fhandle
),
1606 } while (exception
.retry
);
1610 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1611 struct nfs_fsinfo
*info
)
1613 struct nfs4_lookup_root_arg args
= {
1614 .bitmask
= nfs4_fattr_bitmap
,
1616 struct nfs4_lookup_res res
= {
1618 .fattr
= info
->fattr
,
1621 struct rpc_message msg
= {
1622 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
1626 nfs_fattr_init(info
->fattr
);
1627 return rpc_call_sync(server
->client
, &msg
, 0);
1630 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1631 struct nfs_fsinfo
*info
)
1633 struct nfs4_exception exception
= { };
1636 err
= nfs4_handle_exception(server
,
1637 _nfs4_lookup_root(server
, fhandle
, info
),
1639 } while (exception
.retry
);
1644 * get the file handle for the "/" directory on the server
1646 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1647 struct nfs_fsinfo
*info
)
1651 status
= nfs4_lookup_root(server
, fhandle
, info
);
1653 status
= nfs4_server_capabilities(server
, fhandle
);
1655 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
1656 return nfs4_map_errors(status
);
1660 * Get locations and (maybe) other attributes of a referral.
1661 * Note that we'll actually follow the referral later when
1662 * we detect fsid mismatch in inode revalidation
1664 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
1666 int status
= -ENOMEM
;
1667 struct page
*page
= NULL
;
1668 struct nfs4_fs_locations
*locations
= NULL
;
1670 page
= alloc_page(GFP_KERNEL
);
1673 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
1674 if (locations
== NULL
)
1677 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
1680 /* Make sure server returned a different fsid for the referral */
1681 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
1682 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__
, name
->name
);
1687 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
1688 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
1690 fattr
->mode
= S_IFDIR
;
1691 memset(fhandle
, 0, sizeof(struct nfs_fh
));
1700 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1702 struct nfs4_getattr_arg args
= {
1704 .bitmask
= server
->attr_bitmask
,
1706 struct nfs4_getattr_res res
= {
1710 struct rpc_message msg
= {
1711 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
1716 nfs_fattr_init(fattr
);
1717 return rpc_call_sync(server
->client
, &msg
, 0);
1720 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1722 struct nfs4_exception exception
= { };
1725 err
= nfs4_handle_exception(server
,
1726 _nfs4_proc_getattr(server
, fhandle
, fattr
),
1728 } while (exception
.retry
);
1733 * The file is not closed if it is opened due to the a request to change
1734 * the size of the file. The open call will not be needed once the
1735 * VFS layer lookup-intents are implemented.
1737 * Close is called when the inode is destroyed.
1738 * If we haven't opened the file for O_WRONLY, we
1739 * need to in the size_change case to obtain a stateid.
1742 * Because OPEN is always done by name in nfsv4, it is
1743 * possible that we opened a different file by the same
1744 * name. We can recognize this race condition, but we
1745 * can't do anything about it besides returning an error.
1747 * This will be fixed with VFS changes (lookup-intent).
1750 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
1751 struct iattr
*sattr
)
1753 struct inode
*inode
= dentry
->d_inode
;
1754 struct rpc_cred
*cred
= NULL
;
1755 struct nfs4_state
*state
= NULL
;
1758 nfs_fattr_init(fattr
);
1760 /* Search for an existing open(O_WRITE) file */
1761 if (sattr
->ia_valid
& ATTR_FILE
) {
1762 struct nfs_open_context
*ctx
;
1764 ctx
= nfs_file_open_context(sattr
->ia_file
);
1771 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
1773 nfs_setattr_update_inode(inode
, sattr
);
1777 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
1778 const struct qstr
*name
, struct nfs_fh
*fhandle
,
1779 struct nfs_fattr
*fattr
)
1782 struct nfs4_lookup_arg args
= {
1783 .bitmask
= server
->attr_bitmask
,
1787 struct nfs4_lookup_res res
= {
1792 struct rpc_message msg
= {
1793 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1798 nfs_fattr_init(fattr
);
1800 dprintk("NFS call lookupfh %s\n", name
->name
);
1801 status
= rpc_call_sync(server
->client
, &msg
, 0);
1802 dprintk("NFS reply lookupfh: %d\n", status
);
1806 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1807 struct qstr
*name
, struct nfs_fh
*fhandle
,
1808 struct nfs_fattr
*fattr
)
1810 struct nfs4_exception exception
= { };
1813 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
1815 if (err
== -NFS4ERR_MOVED
) {
1819 err
= nfs4_handle_exception(server
, err
, &exception
);
1820 } while (exception
.retry
);
1824 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
1825 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1829 dprintk("NFS call lookup %s\n", name
->name
);
1830 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
1831 if (status
== -NFS4ERR_MOVED
)
1832 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
1833 dprintk("NFS reply lookup: %d\n", status
);
1837 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1839 struct nfs4_exception exception
= { };
1842 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1843 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
1845 } while (exception
.retry
);
1849 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1851 struct nfs_server
*server
= NFS_SERVER(inode
);
1852 struct nfs_fattr fattr
;
1853 struct nfs4_accessargs args
= {
1854 .fh
= NFS_FH(inode
),
1855 .bitmask
= server
->attr_bitmask
,
1857 struct nfs4_accessres res
= {
1861 struct rpc_message msg
= {
1862 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
1865 .rpc_cred
= entry
->cred
,
1867 int mode
= entry
->mask
;
1871 * Determine which access bits we want to ask for...
1873 if (mode
& MAY_READ
)
1874 args
.access
|= NFS4_ACCESS_READ
;
1875 if (S_ISDIR(inode
->i_mode
)) {
1876 if (mode
& MAY_WRITE
)
1877 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
1878 if (mode
& MAY_EXEC
)
1879 args
.access
|= NFS4_ACCESS_LOOKUP
;
1881 if (mode
& MAY_WRITE
)
1882 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
1883 if (mode
& MAY_EXEC
)
1884 args
.access
|= NFS4_ACCESS_EXECUTE
;
1886 nfs_fattr_init(&fattr
);
1887 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1890 if (res
.access
& NFS4_ACCESS_READ
)
1891 entry
->mask
|= MAY_READ
;
1892 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
1893 entry
->mask
|= MAY_WRITE
;
1894 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
1895 entry
->mask
|= MAY_EXEC
;
1896 nfs_refresh_inode(inode
, &fattr
);
1901 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1903 struct nfs4_exception exception
= { };
1906 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1907 _nfs4_proc_access(inode
, entry
),
1909 } while (exception
.retry
);
1914 * TODO: For the time being, we don't try to get any attributes
1915 * along with any of the zero-copy operations READ, READDIR,
1918 * In the case of the first three, we want to put the GETATTR
1919 * after the read-type operation -- this is because it is hard
1920 * to predict the length of a GETATTR response in v4, and thus
1921 * align the READ data correctly. This means that the GETATTR
1922 * may end up partially falling into the page cache, and we should
1923 * shift it into the 'tail' of the xdr_buf before processing.
1924 * To do this efficiently, we need to know the total length
1925 * of data received, which doesn't seem to be available outside
1928 * In the case of WRITE, we also want to put the GETATTR after
1929 * the operation -- in this case because we want to make sure
1930 * we get the post-operation mtime and size. This means that
1931 * we can't use xdr_encode_pages() as written: we need a variant
1932 * of it which would leave room in the 'tail' iovec.
1934 * Both of these changes to the XDR layer would in fact be quite
1935 * minor, but I decided to leave them for a subsequent patch.
1937 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1938 unsigned int pgbase
, unsigned int pglen
)
1940 struct nfs4_readlink args
= {
1941 .fh
= NFS_FH(inode
),
1946 struct rpc_message msg
= {
1947 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
1952 return rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1955 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1956 unsigned int pgbase
, unsigned int pglen
)
1958 struct nfs4_exception exception
= { };
1961 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1962 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
1964 } while (exception
.retry
);
1970 * We will need to arrange for the VFS layer to provide an atomic open.
1971 * Until then, this create/open method is prone to inefficiency and race
1972 * conditions due to the lookup, create, and open VFS calls from sys_open()
1973 * placed on the wire.
1975 * Given the above sorry state of affairs, I'm simply sending an OPEN.
1976 * The file will be opened again in the subsequent VFS open call
1977 * (nfs4_proc_file_open).
1979 * The open for read will just hang around to be used by any process that
1980 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
1984 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
1985 int flags
, struct nameidata
*nd
)
1987 struct path path
= {
1988 .mnt
= nd
->path
.mnt
,
1991 struct nfs4_state
*state
;
1992 struct rpc_cred
*cred
;
1995 cred
= rpc_lookup_cred();
1997 status
= PTR_ERR(cred
);
2000 state
= nfs4_do_open(dir
, &path
, flags
, sattr
, cred
);
2002 if (IS_ERR(state
)) {
2003 status
= PTR_ERR(state
);
2006 d_add(dentry
, igrab(state
->inode
));
2007 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2008 if (flags
& O_EXCL
) {
2009 struct nfs_fattr fattr
;
2010 status
= nfs4_do_setattr(state
->inode
, cred
, &fattr
, sattr
, state
);
2012 nfs_setattr_update_inode(state
->inode
, sattr
);
2013 nfs_post_op_update_inode(state
->inode
, &fattr
);
2015 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
2016 status
= nfs4_intent_set_file(nd
, &path
, state
);
2018 nfs4_close_sync(&path
, state
, flags
);
2025 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2027 struct nfs_server
*server
= NFS_SERVER(dir
);
2028 struct nfs_removeargs args
= {
2030 .name
.len
= name
->len
,
2031 .name
.name
= name
->name
,
2032 .bitmask
= server
->attr_bitmask
,
2034 struct nfs_removeres res
= {
2037 struct rpc_message msg
= {
2038 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2044 nfs_fattr_init(&res
.dir_attr
);
2045 status
= rpc_call_sync(server
->client
, &msg
, 0);
2047 update_changeattr(dir
, &res
.cinfo
);
2048 nfs_post_op_update_inode(dir
, &res
.dir_attr
);
2053 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2055 struct nfs4_exception exception
= { };
2058 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2059 _nfs4_proc_remove(dir
, name
),
2061 } while (exception
.retry
);
2065 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2067 struct nfs_server
*server
= NFS_SERVER(dir
);
2068 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2069 struct nfs_removeres
*res
= msg
->rpc_resp
;
2071 args
->bitmask
= server
->attr_bitmask
;
2072 res
->server
= server
;
2073 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2076 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2078 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2080 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2082 update_changeattr(dir
, &res
->cinfo
);
2083 nfs_post_op_update_inode(dir
, &res
->dir_attr
);
2087 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2088 struct inode
*new_dir
, struct qstr
*new_name
)
2090 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2091 struct nfs4_rename_arg arg
= {
2092 .old_dir
= NFS_FH(old_dir
),
2093 .new_dir
= NFS_FH(new_dir
),
2094 .old_name
= old_name
,
2095 .new_name
= new_name
,
2096 .bitmask
= server
->attr_bitmask
,
2098 struct nfs_fattr old_fattr
, new_fattr
;
2099 struct nfs4_rename_res res
= {
2101 .old_fattr
= &old_fattr
,
2102 .new_fattr
= &new_fattr
,
2104 struct rpc_message msg
= {
2105 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2111 nfs_fattr_init(res
.old_fattr
);
2112 nfs_fattr_init(res
.new_fattr
);
2113 status
= rpc_call_sync(server
->client
, &msg
, 0);
2116 update_changeattr(old_dir
, &res
.old_cinfo
);
2117 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2118 update_changeattr(new_dir
, &res
.new_cinfo
);
2119 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2124 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2125 struct inode
*new_dir
, struct qstr
*new_name
)
2127 struct nfs4_exception exception
= { };
2130 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2131 _nfs4_proc_rename(old_dir
, old_name
,
2134 } while (exception
.retry
);
2138 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2140 struct nfs_server
*server
= NFS_SERVER(inode
);
2141 struct nfs4_link_arg arg
= {
2142 .fh
= NFS_FH(inode
),
2143 .dir_fh
= NFS_FH(dir
),
2145 .bitmask
= server
->attr_bitmask
,
2147 struct nfs_fattr fattr
, dir_attr
;
2148 struct nfs4_link_res res
= {
2151 .dir_attr
= &dir_attr
,
2153 struct rpc_message msg
= {
2154 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2160 nfs_fattr_init(res
.fattr
);
2161 nfs_fattr_init(res
.dir_attr
);
2162 status
= rpc_call_sync(server
->client
, &msg
, 0);
2164 update_changeattr(dir
, &res
.cinfo
);
2165 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2166 nfs_post_op_update_inode(inode
, res
.fattr
);
2172 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2174 struct nfs4_exception exception
= { };
2177 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2178 _nfs4_proc_link(inode
, dir
, name
),
2180 } while (exception
.retry
);
2184 struct nfs4_createdata
{
2185 struct rpc_message msg
;
2186 struct nfs4_create_arg arg
;
2187 struct nfs4_create_res res
;
2189 struct nfs_fattr fattr
;
2190 struct nfs_fattr dir_fattr
;
2193 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2194 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2196 struct nfs4_createdata
*data
;
2198 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2200 struct nfs_server
*server
= NFS_SERVER(dir
);
2202 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2203 data
->msg
.rpc_argp
= &data
->arg
;
2204 data
->msg
.rpc_resp
= &data
->res
;
2205 data
->arg
.dir_fh
= NFS_FH(dir
);
2206 data
->arg
.server
= server
;
2207 data
->arg
.name
= name
;
2208 data
->arg
.attrs
= sattr
;
2209 data
->arg
.ftype
= ftype
;
2210 data
->arg
.bitmask
= server
->attr_bitmask
;
2211 data
->res
.server
= server
;
2212 data
->res
.fh
= &data
->fh
;
2213 data
->res
.fattr
= &data
->fattr
;
2214 data
->res
.dir_fattr
= &data
->dir_fattr
;
2215 nfs_fattr_init(data
->res
.fattr
);
2216 nfs_fattr_init(data
->res
.dir_fattr
);
2221 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2223 int status
= rpc_call_sync(NFS_CLIENT(dir
), &data
->msg
, 0);
2225 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2226 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2227 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2232 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2237 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2238 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2240 struct nfs4_createdata
*data
;
2241 int status
= -ENAMETOOLONG
;
2243 if (len
> NFS4_MAXPATHLEN
)
2247 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2251 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2252 data
->arg
.u
.symlink
.pages
= &page
;
2253 data
->arg
.u
.symlink
.len
= len
;
2255 status
= nfs4_do_create(dir
, dentry
, data
);
2257 nfs4_free_createdata(data
);
2262 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2263 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2265 struct nfs4_exception exception
= { };
2268 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2269 _nfs4_proc_symlink(dir
, dentry
, page
,
2272 } while (exception
.retry
);
2276 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2277 struct iattr
*sattr
)
2279 struct nfs4_createdata
*data
;
2280 int status
= -ENOMEM
;
2282 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2286 status
= nfs4_do_create(dir
, dentry
, data
);
2288 nfs4_free_createdata(data
);
2293 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2294 struct iattr
*sattr
)
2296 struct nfs4_exception exception
= { };
2299 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2300 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2302 } while (exception
.retry
);
2306 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2307 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2309 struct inode
*dir
= dentry
->d_inode
;
2310 struct nfs4_readdir_arg args
= {
2315 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2317 struct nfs4_readdir_res res
;
2318 struct rpc_message msg
= {
2319 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2326 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
2327 dentry
->d_parent
->d_name
.name
,
2328 dentry
->d_name
.name
,
2329 (unsigned long long)cookie
);
2330 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2331 res
.pgbase
= args
.pgbase
;
2332 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2334 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2336 nfs_invalidate_atime(dir
);
2338 dprintk("%s: returns %d\n", __func__
, status
);
2342 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2343 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2345 struct nfs4_exception exception
= { };
2348 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2349 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2352 } while (exception
.retry
);
2356 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2357 struct iattr
*sattr
, dev_t rdev
)
2359 struct nfs4_createdata
*data
;
2360 int mode
= sattr
->ia_mode
;
2361 int status
= -ENOMEM
;
2363 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2364 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2366 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
2371 data
->arg
.ftype
= NF4FIFO
;
2372 else if (S_ISBLK(mode
)) {
2373 data
->arg
.ftype
= NF4BLK
;
2374 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2375 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2377 else if (S_ISCHR(mode
)) {
2378 data
->arg
.ftype
= NF4CHR
;
2379 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2380 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2383 status
= nfs4_do_create(dir
, dentry
, data
);
2385 nfs4_free_createdata(data
);
2390 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2391 struct iattr
*sattr
, dev_t rdev
)
2393 struct nfs4_exception exception
= { };
2396 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2397 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2399 } while (exception
.retry
);
2403 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2404 struct nfs_fsstat
*fsstat
)
2406 struct nfs4_statfs_arg args
= {
2408 .bitmask
= server
->attr_bitmask
,
2410 struct rpc_message msg
= {
2411 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2416 nfs_fattr_init(fsstat
->fattr
);
2417 return rpc_call_sync(server
->client
, &msg
, 0);
2420 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2422 struct nfs4_exception exception
= { };
2425 err
= nfs4_handle_exception(server
,
2426 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2428 } while (exception
.retry
);
2432 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2433 struct nfs_fsinfo
*fsinfo
)
2435 struct nfs4_fsinfo_arg args
= {
2437 .bitmask
= server
->attr_bitmask
,
2439 struct rpc_message msg
= {
2440 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2445 return rpc_call_sync(server
->client
, &msg
, 0);
2448 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2450 struct nfs4_exception exception
= { };
2454 err
= nfs4_handle_exception(server
,
2455 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2457 } while (exception
.retry
);
2461 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2463 nfs_fattr_init(fsinfo
->fattr
);
2464 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2467 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2468 struct nfs_pathconf
*pathconf
)
2470 struct nfs4_pathconf_arg args
= {
2472 .bitmask
= server
->attr_bitmask
,
2474 struct rpc_message msg
= {
2475 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2477 .rpc_resp
= pathconf
,
2480 /* None of the pathconf attributes are mandatory to implement */
2481 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2482 memset(pathconf
, 0, sizeof(*pathconf
));
2486 nfs_fattr_init(pathconf
->fattr
);
2487 return rpc_call_sync(server
->client
, &msg
, 0);
2490 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2491 struct nfs_pathconf
*pathconf
)
2493 struct nfs4_exception exception
= { };
2497 err
= nfs4_handle_exception(server
,
2498 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2500 } while (exception
.retry
);
2504 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2506 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2508 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
2509 rpc_restart_call(task
);
2513 nfs_invalidate_atime(data
->inode
);
2514 if (task
->tk_status
> 0)
2515 renew_lease(server
, data
->timestamp
);
2519 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
2521 data
->timestamp
= jiffies
;
2522 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
2525 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2527 struct inode
*inode
= data
->inode
;
2529 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
2530 rpc_restart_call(task
);
2533 if (task
->tk_status
>= 0) {
2534 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2535 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
2540 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
2542 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2544 data
->args
.bitmask
= server
->attr_bitmask
;
2545 data
->res
.server
= server
;
2546 data
->timestamp
= jiffies
;
2548 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
2551 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2553 struct inode
*inode
= data
->inode
;
2555 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
2556 rpc_restart_call(task
);
2559 nfs_refresh_inode(inode
, data
->res
.fattr
);
2563 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
2565 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2567 data
->args
.bitmask
= server
->attr_bitmask
;
2568 data
->res
.server
= server
;
2569 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
2573 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
2574 * standalone procedure for queueing an asynchronous RENEW.
2576 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
2578 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
2579 unsigned long timestamp
= (unsigned long)data
;
2581 if (task
->tk_status
< 0) {
2582 switch (task
->tk_status
) {
2583 case -NFS4ERR_STALE_CLIENTID
:
2584 case -NFS4ERR_EXPIRED
:
2585 case -NFS4ERR_CB_PATH_DOWN
:
2586 nfs4_schedule_state_recovery(clp
);
2590 spin_lock(&clp
->cl_lock
);
2591 if (time_before(clp
->cl_last_renewal
,timestamp
))
2592 clp
->cl_last_renewal
= timestamp
;
2593 spin_unlock(&clp
->cl_lock
);
2596 static const struct rpc_call_ops nfs4_renew_ops
= {
2597 .rpc_call_done
= nfs4_renew_done
,
2600 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2602 struct rpc_message msg
= {
2603 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2608 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
2609 &nfs4_renew_ops
, (void *)jiffies
);
2612 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2614 struct rpc_message msg
= {
2615 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2619 unsigned long now
= jiffies
;
2622 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2625 spin_lock(&clp
->cl_lock
);
2626 if (time_before(clp
->cl_last_renewal
,now
))
2627 clp
->cl_last_renewal
= now
;
2628 spin_unlock(&clp
->cl_lock
);
2632 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
2634 return (server
->caps
& NFS_CAP_ACLS
)
2635 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2636 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
2639 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
2640 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
2643 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
2645 static void buf_to_pages(const void *buf
, size_t buflen
,
2646 struct page
**pages
, unsigned int *pgbase
)
2648 const void *p
= buf
;
2650 *pgbase
= offset_in_page(buf
);
2652 while (p
< buf
+ buflen
) {
2653 *(pages
++) = virt_to_page(p
);
2654 p
+= PAGE_CACHE_SIZE
;
2658 struct nfs4_cached_acl
{
2664 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
2666 struct nfs_inode
*nfsi
= NFS_I(inode
);
2668 spin_lock(&inode
->i_lock
);
2669 kfree(nfsi
->nfs4_acl
);
2670 nfsi
->nfs4_acl
= acl
;
2671 spin_unlock(&inode
->i_lock
);
2674 static void nfs4_zap_acl_attr(struct inode
*inode
)
2676 nfs4_set_cached_acl(inode
, NULL
);
2679 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
2681 struct nfs_inode
*nfsi
= NFS_I(inode
);
2682 struct nfs4_cached_acl
*acl
;
2685 spin_lock(&inode
->i_lock
);
2686 acl
= nfsi
->nfs4_acl
;
2689 if (buf
== NULL
) /* user is just asking for length */
2691 if (acl
->cached
== 0)
2693 ret
= -ERANGE
; /* see getxattr(2) man page */
2694 if (acl
->len
> buflen
)
2696 memcpy(buf
, acl
->data
, acl
->len
);
2700 spin_unlock(&inode
->i_lock
);
2704 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
2706 struct nfs4_cached_acl
*acl
;
2708 if (buf
&& acl_len
<= PAGE_SIZE
) {
2709 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
2713 memcpy(acl
->data
, buf
, acl_len
);
2715 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
2722 nfs4_set_cached_acl(inode
, acl
);
2725 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2727 struct page
*pages
[NFS4ACL_MAXPAGES
];
2728 struct nfs_getaclargs args
= {
2729 .fh
= NFS_FH(inode
),
2733 size_t resp_len
= buflen
;
2735 struct rpc_message msg
= {
2736 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
2738 .rpc_resp
= &resp_len
,
2740 struct page
*localpage
= NULL
;
2743 if (buflen
< PAGE_SIZE
) {
2744 /* As long as we're doing a round trip to the server anyway,
2745 * let's be prepared for a page of acl data. */
2746 localpage
= alloc_page(GFP_KERNEL
);
2747 resp_buf
= page_address(localpage
);
2748 if (localpage
== NULL
)
2750 args
.acl_pages
[0] = localpage
;
2751 args
.acl_pgbase
= 0;
2752 resp_len
= args
.acl_len
= PAGE_SIZE
;
2755 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
2757 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2760 if (resp_len
> args
.acl_len
)
2761 nfs4_write_cached_acl(inode
, NULL
, resp_len
);
2763 nfs4_write_cached_acl(inode
, resp_buf
, resp_len
);
2766 if (resp_len
> buflen
)
2769 memcpy(buf
, resp_buf
, resp_len
);
2774 __free_page(localpage
);
2778 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2780 struct nfs4_exception exception
= { };
2783 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
2786 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
2787 } while (exception
.retry
);
2791 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
2793 struct nfs_server
*server
= NFS_SERVER(inode
);
2796 if (!nfs4_server_supports_acls(server
))
2798 ret
= nfs_revalidate_inode(server
, inode
);
2801 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
2802 nfs_zap_acl_cache(inode
);
2803 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
2806 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
2809 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2811 struct nfs_server
*server
= NFS_SERVER(inode
);
2812 struct page
*pages
[NFS4ACL_MAXPAGES
];
2813 struct nfs_setaclargs arg
= {
2814 .fh
= NFS_FH(inode
),
2818 struct rpc_message msg
= {
2819 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
2825 if (!nfs4_server_supports_acls(server
))
2827 nfs_inode_return_delegation(inode
);
2828 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
2829 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2830 nfs_access_zap_cache(inode
);
2831 nfs_zap_acl_cache(inode
);
2835 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2837 struct nfs4_exception exception
= { };
2840 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2841 __nfs4_proc_set_acl(inode
, buf
, buflen
),
2843 } while (exception
.retry
);
2848 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
2850 struct nfs_client
*clp
= server
->nfs_client
;
2852 if (!clp
|| task
->tk_status
>= 0)
2854 switch(task
->tk_status
) {
2855 case -NFS4ERR_ADMIN_REVOKED
:
2856 case -NFS4ERR_BAD_STATEID
:
2857 case -NFS4ERR_OPENMODE
:
2860 nfs4_state_mark_reclaim_nograce(clp
, state
);
2861 case -NFS4ERR_STALE_CLIENTID
:
2862 case -NFS4ERR_STALE_STATEID
:
2863 case -NFS4ERR_EXPIRED
:
2864 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
2865 nfs4_schedule_state_recovery(clp
);
2866 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
2867 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
2868 task
->tk_status
= 0;
2870 case -NFS4ERR_DELAY
:
2871 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
2872 case -NFS4ERR_GRACE
:
2873 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
2874 task
->tk_status
= 0;
2876 case -NFS4ERR_OLD_STATEID
:
2877 task
->tk_status
= 0;
2880 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
2884 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
2886 nfs4_verifier sc_verifier
;
2887 struct nfs4_setclientid setclientid
= {
2888 .sc_verifier
= &sc_verifier
,
2891 struct rpc_message msg
= {
2892 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
2893 .rpc_argp
= &setclientid
,
2901 p
= (__be32
*)sc_verifier
.data
;
2902 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
2903 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
2906 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
2907 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
2909 rpc_peeraddr2str(clp
->cl_rpcclient
,
2911 rpc_peeraddr2str(clp
->cl_rpcclient
,
2913 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
2914 clp
->cl_id_uniquifier
);
2915 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
2916 sizeof(setclientid
.sc_netid
),
2917 rpc_peeraddr2str(clp
->cl_rpcclient
,
2918 RPC_DISPLAY_NETID
));
2919 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
2920 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
2921 clp
->cl_ipaddr
, port
>> 8, port
& 255);
2923 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2924 if (status
!= -NFS4ERR_CLID_INUSE
)
2929 ssleep(clp
->cl_lease_time
+ 1);
2931 if (++clp
->cl_id_uniquifier
== 0)
2937 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2939 struct nfs_fsinfo fsinfo
;
2940 struct rpc_message msg
= {
2941 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
2943 .rpc_resp
= &fsinfo
,
2950 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2952 spin_lock(&clp
->cl_lock
);
2953 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
2954 clp
->cl_last_renewal
= now
;
2955 spin_unlock(&clp
->cl_lock
);
2960 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2965 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
2969 case -NFS4ERR_RESOURCE
:
2970 /* The IBM lawyers misread another document! */
2971 case -NFS4ERR_DELAY
:
2972 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
2978 struct nfs4_delegreturndata
{
2979 struct nfs4_delegreturnargs args
;
2980 struct nfs4_delegreturnres res
;
2982 nfs4_stateid stateid
;
2983 unsigned long timestamp
;
2984 struct nfs_fattr fattr
;
2988 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
2990 struct nfs4_delegreturndata
*data
= calldata
;
2991 data
->rpc_status
= task
->tk_status
;
2992 if (data
->rpc_status
== 0)
2993 renew_lease(data
->res
.server
, data
->timestamp
);
2996 static void nfs4_delegreturn_release(void *calldata
)
3001 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3002 .rpc_call_done
= nfs4_delegreturn_done
,
3003 .rpc_release
= nfs4_delegreturn_release
,
3006 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3008 struct nfs4_delegreturndata
*data
;
3009 struct nfs_server
*server
= NFS_SERVER(inode
);
3010 struct rpc_task
*task
;
3011 struct rpc_message msg
= {
3012 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3015 struct rpc_task_setup task_setup_data
= {
3016 .rpc_client
= server
->client
,
3017 .rpc_message
= &msg
,
3018 .callback_ops
= &nfs4_delegreturn_ops
,
3019 .flags
= RPC_TASK_ASYNC
,
3023 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3026 data
->args
.fhandle
= &data
->fh
;
3027 data
->args
.stateid
= &data
->stateid
;
3028 data
->args
.bitmask
= server
->attr_bitmask
;
3029 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3030 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3031 data
->res
.fattr
= &data
->fattr
;
3032 data
->res
.server
= server
;
3033 nfs_fattr_init(data
->res
.fattr
);
3034 data
->timestamp
= jiffies
;
3035 data
->rpc_status
= 0;
3037 task_setup_data
.callback_data
= data
;
3038 msg
.rpc_argp
= &data
->args
,
3039 msg
.rpc_resp
= &data
->res
,
3040 task
= rpc_run_task(&task_setup_data
);
3042 return PTR_ERR(task
);
3045 status
= nfs4_wait_for_completion_rpc_task(task
);
3048 status
= data
->rpc_status
;
3051 nfs_refresh_inode(inode
, &data
->fattr
);
3057 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3059 struct nfs_server
*server
= NFS_SERVER(inode
);
3060 struct nfs4_exception exception
= { };
3063 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3065 case -NFS4ERR_STALE_STATEID
:
3066 case -NFS4ERR_EXPIRED
:
3070 err
= nfs4_handle_exception(server
, err
, &exception
);
3071 } while (exception
.retry
);
3075 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3076 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3079 * sleep, with exponential backoff, and retry the LOCK operation.
3081 static unsigned long
3082 nfs4_set_lock_task_retry(unsigned long timeout
)
3084 schedule_timeout_killable(timeout
);
3086 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3087 return NFS4_LOCK_MAXTIMEOUT
;
3091 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3093 struct inode
*inode
= state
->inode
;
3094 struct nfs_server
*server
= NFS_SERVER(inode
);
3095 struct nfs_client
*clp
= server
->nfs_client
;
3096 struct nfs_lockt_args arg
= {
3097 .fh
= NFS_FH(inode
),
3100 struct nfs_lockt_res res
= {
3103 struct rpc_message msg
= {
3104 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3107 .rpc_cred
= state
->owner
->so_cred
,
3109 struct nfs4_lock_state
*lsp
;
3112 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3113 status
= nfs4_set_lock_state(state
, request
);
3116 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3117 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3118 status
= rpc_call_sync(server
->client
, &msg
, 0);
3121 request
->fl_type
= F_UNLCK
;
3123 case -NFS4ERR_DENIED
:
3126 request
->fl_ops
->fl_release_private(request
);
3131 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3133 struct nfs4_exception exception
= { };
3137 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3138 _nfs4_proc_getlk(state
, cmd
, request
),
3140 } while (exception
.retry
);
3144 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3147 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3149 res
= posix_lock_file_wait(file
, fl
);
3152 res
= flock_lock_file_wait(file
, fl
);
3160 struct nfs4_unlockdata
{
3161 struct nfs_locku_args arg
;
3162 struct nfs_locku_res res
;
3163 struct nfs4_lock_state
*lsp
;
3164 struct nfs_open_context
*ctx
;
3165 struct file_lock fl
;
3166 const struct nfs_server
*server
;
3167 unsigned long timestamp
;
3170 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3171 struct nfs_open_context
*ctx
,
3172 struct nfs4_lock_state
*lsp
,
3173 struct nfs_seqid
*seqid
)
3175 struct nfs4_unlockdata
*p
;
3176 struct inode
*inode
= lsp
->ls_state
->inode
;
3178 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
3181 p
->arg
.fh
= NFS_FH(inode
);
3183 p
->arg
.seqid
= seqid
;
3184 p
->res
.seqid
= seqid
;
3185 p
->arg
.stateid
= &lsp
->ls_stateid
;
3187 atomic_inc(&lsp
->ls_count
);
3188 /* Ensure we don't close file until we're done freeing locks! */
3189 p
->ctx
= get_nfs_open_context(ctx
);
3190 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3191 p
->server
= NFS_SERVER(inode
);
3195 static void nfs4_locku_release_calldata(void *data
)
3197 struct nfs4_unlockdata
*calldata
= data
;
3198 nfs_free_seqid(calldata
->arg
.seqid
);
3199 nfs4_put_lock_state(calldata
->lsp
);
3200 put_nfs_open_context(calldata
->ctx
);
3204 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3206 struct nfs4_unlockdata
*calldata
= data
;
3208 if (RPC_ASSASSINATED(task
))
3210 switch (task
->tk_status
) {
3212 memcpy(calldata
->lsp
->ls_stateid
.data
,
3213 calldata
->res
.stateid
.data
,
3214 sizeof(calldata
->lsp
->ls_stateid
.data
));
3215 renew_lease(calldata
->server
, calldata
->timestamp
);
3217 case -NFS4ERR_BAD_STATEID
:
3218 case -NFS4ERR_OLD_STATEID
:
3219 case -NFS4ERR_STALE_STATEID
:
3220 case -NFS4ERR_EXPIRED
:
3223 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
3224 rpc_restart_call(task
);
3228 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3230 struct nfs4_unlockdata
*calldata
= data
;
3232 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3234 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3235 /* Note: exit _without_ running nfs4_locku_done */
3236 task
->tk_action
= NULL
;
3239 calldata
->timestamp
= jiffies
;
3240 rpc_call_start(task
);
3243 static const struct rpc_call_ops nfs4_locku_ops
= {
3244 .rpc_call_prepare
= nfs4_locku_prepare
,
3245 .rpc_call_done
= nfs4_locku_done
,
3246 .rpc_release
= nfs4_locku_release_calldata
,
3249 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3250 struct nfs_open_context
*ctx
,
3251 struct nfs4_lock_state
*lsp
,
3252 struct nfs_seqid
*seqid
)
3254 struct nfs4_unlockdata
*data
;
3255 struct rpc_message msg
= {
3256 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3257 .rpc_cred
= ctx
->cred
,
3259 struct rpc_task_setup task_setup_data
= {
3260 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
3261 .rpc_message
= &msg
,
3262 .callback_ops
= &nfs4_locku_ops
,
3263 .workqueue
= nfsiod_workqueue
,
3264 .flags
= RPC_TASK_ASYNC
,
3267 /* Ensure this is an unlock - when canceling a lock, the
3268 * canceled lock is passed in, and it won't be an unlock.
3270 fl
->fl_type
= F_UNLCK
;
3272 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3274 nfs_free_seqid(seqid
);
3275 return ERR_PTR(-ENOMEM
);
3278 msg
.rpc_argp
= &data
->arg
,
3279 msg
.rpc_resp
= &data
->res
,
3280 task_setup_data
.callback_data
= data
;
3281 return rpc_run_task(&task_setup_data
);
3284 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3286 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3287 struct nfs_seqid
*seqid
;
3288 struct nfs4_lock_state
*lsp
;
3289 struct rpc_task
*task
;
3291 unsigned char fl_flags
= request
->fl_flags
;
3293 status
= nfs4_set_lock_state(state
, request
);
3294 /* Unlock _before_ we do the RPC call */
3295 request
->fl_flags
|= FL_EXISTS
;
3296 down_read(&nfsi
->rwsem
);
3297 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
3298 up_read(&nfsi
->rwsem
);
3301 up_read(&nfsi
->rwsem
);
3304 /* Is this a delegated lock? */
3305 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3307 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3308 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3312 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
3313 status
= PTR_ERR(task
);
3316 status
= nfs4_wait_for_completion_rpc_task(task
);
3319 request
->fl_flags
= fl_flags
;
3323 struct nfs4_lockdata
{
3324 struct nfs_lock_args arg
;
3325 struct nfs_lock_res res
;
3326 struct nfs4_lock_state
*lsp
;
3327 struct nfs_open_context
*ctx
;
3328 struct file_lock fl
;
3329 unsigned long timestamp
;
3334 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3335 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3337 struct nfs4_lockdata
*p
;
3338 struct inode
*inode
= lsp
->ls_state
->inode
;
3339 struct nfs_server
*server
= NFS_SERVER(inode
);
3341 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3345 p
->arg
.fh
= NFS_FH(inode
);
3347 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
);
3348 if (p
->arg
.open_seqid
== NULL
)
3350 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3351 if (p
->arg
.lock_seqid
== NULL
)
3352 goto out_free_seqid
;
3353 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3354 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3355 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3356 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
3358 atomic_inc(&lsp
->ls_count
);
3359 p
->ctx
= get_nfs_open_context(ctx
);
3360 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3363 nfs_free_seqid(p
->arg
.open_seqid
);
3369 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3371 struct nfs4_lockdata
*data
= calldata
;
3372 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3374 dprintk("%s: begin!\n", __func__
);
3375 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3377 /* Do we need to do an open_to_lock_owner? */
3378 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3379 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
3381 data
->arg
.open_stateid
= &state
->stateid
;
3382 data
->arg
.new_lock_owner
= 1;
3383 data
->res
.open_seqid
= data
->arg
.open_seqid
;
3385 data
->arg
.new_lock_owner
= 0;
3386 data
->timestamp
= jiffies
;
3387 rpc_call_start(task
);
3388 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
3391 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3393 struct nfs4_lockdata
*data
= calldata
;
3395 dprintk("%s: begin!\n", __func__
);
3397 data
->rpc_status
= task
->tk_status
;
3398 if (RPC_ASSASSINATED(task
))
3400 if (data
->arg
.new_lock_owner
!= 0) {
3401 if (data
->rpc_status
== 0)
3402 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3406 if (data
->rpc_status
== 0) {
3407 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3408 sizeof(data
->lsp
->ls_stateid
.data
));
3409 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3410 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3413 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
3416 static void nfs4_lock_release(void *calldata
)
3418 struct nfs4_lockdata
*data
= calldata
;
3420 dprintk("%s: begin!\n", __func__
);
3421 nfs_free_seqid(data
->arg
.open_seqid
);
3422 if (data
->cancelled
!= 0) {
3423 struct rpc_task
*task
;
3424 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3425 data
->arg
.lock_seqid
);
3428 dprintk("%s: cancelling lock!\n", __func__
);
3430 nfs_free_seqid(data
->arg
.lock_seqid
);
3431 nfs4_put_lock_state(data
->lsp
);
3432 put_nfs_open_context(data
->ctx
);
3434 dprintk("%s: done!\n", __func__
);
3437 static const struct rpc_call_ops nfs4_lock_ops
= {
3438 .rpc_call_prepare
= nfs4_lock_prepare
,
3439 .rpc_call_done
= nfs4_lock_done
,
3440 .rpc_release
= nfs4_lock_release
,
3443 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3445 struct nfs4_lockdata
*data
;
3446 struct rpc_task
*task
;
3447 struct rpc_message msg
= {
3448 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3449 .rpc_cred
= state
->owner
->so_cred
,
3451 struct rpc_task_setup task_setup_data
= {
3452 .rpc_client
= NFS_CLIENT(state
->inode
),
3453 .rpc_message
= &msg
,
3454 .callback_ops
= &nfs4_lock_ops
,
3455 .workqueue
= nfsiod_workqueue
,
3456 .flags
= RPC_TASK_ASYNC
,
3460 dprintk("%s: begin!\n", __func__
);
3461 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
3462 fl
->fl_u
.nfs4_fl
.owner
);
3466 data
->arg
.block
= 1;
3468 data
->arg
.reclaim
= 1;
3469 msg
.rpc_argp
= &data
->arg
,
3470 msg
.rpc_resp
= &data
->res
,
3471 task_setup_data
.callback_data
= data
;
3472 task
= rpc_run_task(&task_setup_data
);
3474 return PTR_ERR(task
);
3475 ret
= nfs4_wait_for_completion_rpc_task(task
);
3477 ret
= data
->rpc_status
;
3478 if (ret
== -NFS4ERR_DENIED
)
3481 data
->cancelled
= 1;
3483 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
3487 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
3489 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3490 struct nfs4_exception exception
= { };
3494 /* Cache the lock if possible... */
3495 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3497 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
3498 if (err
!= -NFS4ERR_DELAY
)
3500 nfs4_handle_exception(server
, err
, &exception
);
3501 } while (exception
.retry
);
3505 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
3507 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3508 struct nfs4_exception exception
= { };
3511 err
= nfs4_set_lock_state(state
, request
);
3515 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3517 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
3518 if (err
!= -NFS4ERR_DELAY
)
3520 nfs4_handle_exception(server
, err
, &exception
);
3521 } while (exception
.retry
);
3525 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3527 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3528 unsigned char fl_flags
= request
->fl_flags
;
3531 /* Is this a delegated open? */
3532 status
= nfs4_set_lock_state(state
, request
);
3535 request
->fl_flags
|= FL_ACCESS
;
3536 status
= do_vfs_lock(request
->fl_file
, request
);
3539 down_read(&nfsi
->rwsem
);
3540 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3541 /* Yes: cache locks! */
3542 /* ...but avoid races with delegation recall... */
3543 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
3544 status
= do_vfs_lock(request
->fl_file
, request
);
3547 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
3550 /* Note: we always want to sleep here! */
3551 request
->fl_flags
= fl_flags
| FL_SLEEP
;
3552 if (do_vfs_lock(request
->fl_file
, request
) < 0)
3553 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
3555 up_read(&nfsi
->rwsem
);
3557 request
->fl_flags
= fl_flags
;
3561 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3563 struct nfs4_exception exception
= { };
3567 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3568 _nfs4_proc_setlk(state
, cmd
, request
),
3570 } while (exception
.retry
);
3575 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
3577 struct nfs_open_context
*ctx
;
3578 struct nfs4_state
*state
;
3579 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
3582 /* verify open state */
3583 ctx
= nfs_file_open_context(filp
);
3586 if (request
->fl_start
< 0 || request
->fl_end
< 0)
3590 return nfs4_proc_getlk(state
, F_GETLK
, request
);
3592 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
3595 if (request
->fl_type
== F_UNLCK
)
3596 return nfs4_proc_unlck(state
, cmd
, request
);
3599 status
= nfs4_proc_setlk(state
, cmd
, request
);
3600 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
3602 timeout
= nfs4_set_lock_task_retry(timeout
);
3603 status
= -ERESTARTSYS
;
3606 } while(status
< 0);
3610 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
3612 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3613 struct nfs4_exception exception
= { };
3616 err
= nfs4_set_lock_state(state
, fl
);
3620 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
3621 if (err
!= -NFS4ERR_DELAY
)
3623 err
= nfs4_handle_exception(server
, err
, &exception
);
3624 } while (exception
.retry
);
3629 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
3631 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
3632 size_t buflen
, int flags
)
3634 struct inode
*inode
= dentry
->d_inode
;
3636 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3639 return nfs4_proc_set_acl(inode
, buf
, buflen
);
3642 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
3643 * and that's what we'll do for e.g. user attributes that haven't been set.
3644 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
3645 * attributes in kernel-managed attribute namespaces. */
3646 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
3649 struct inode
*inode
= dentry
->d_inode
;
3651 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3654 return nfs4_proc_get_acl(inode
, buf
, buflen
);
3657 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
3659 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
3661 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
3663 if (buf
&& buflen
< len
)
3666 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
3670 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
3671 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
3673 struct nfs_server
*server
= NFS_SERVER(dir
);
3675 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
3676 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
3678 struct nfs4_fs_locations_arg args
= {
3679 .dir_fh
= NFS_FH(dir
),
3684 struct rpc_message msg
= {
3685 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
3687 .rpc_resp
= fs_locations
,
3691 dprintk("%s: start\n", __func__
);
3692 nfs_fattr_init(&fs_locations
->fattr
);
3693 fs_locations
->server
= server
;
3694 fs_locations
->nlocations
= 0;
3695 status
= rpc_call_sync(server
->client
, &msg
, 0);
3696 dprintk("%s: returned status = %d\n", __func__
, status
);
3700 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops
= {
3701 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
3702 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
3703 .recover_open
= nfs4_open_reclaim
,
3704 .recover_lock
= nfs4_lock_reclaim
,
3707 struct nfs4_state_recovery_ops nfs4_nograce_recovery_ops
= {
3708 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
3709 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
3710 .recover_open
= nfs4_open_expired
,
3711 .recover_lock
= nfs4_lock_expired
,
3714 static const struct inode_operations nfs4_file_inode_operations
= {
3715 .permission
= nfs_permission
,
3716 .getattr
= nfs_getattr
,
3717 .setattr
= nfs_setattr
,
3718 .getxattr
= nfs4_getxattr
,
3719 .setxattr
= nfs4_setxattr
,
3720 .listxattr
= nfs4_listxattr
,
3723 const struct nfs_rpc_ops nfs_v4_clientops
= {
3724 .version
= 4, /* protocol version */
3725 .dentry_ops
= &nfs4_dentry_operations
,
3726 .dir_inode_ops
= &nfs4_dir_inode_operations
,
3727 .file_inode_ops
= &nfs4_file_inode_operations
,
3728 .getroot
= nfs4_proc_get_root
,
3729 .getattr
= nfs4_proc_getattr
,
3730 .setattr
= nfs4_proc_setattr
,
3731 .lookupfh
= nfs4_proc_lookupfh
,
3732 .lookup
= nfs4_proc_lookup
,
3733 .access
= nfs4_proc_access
,
3734 .readlink
= nfs4_proc_readlink
,
3735 .create
= nfs4_proc_create
,
3736 .remove
= nfs4_proc_remove
,
3737 .unlink_setup
= nfs4_proc_unlink_setup
,
3738 .unlink_done
= nfs4_proc_unlink_done
,
3739 .rename
= nfs4_proc_rename
,
3740 .link
= nfs4_proc_link
,
3741 .symlink
= nfs4_proc_symlink
,
3742 .mkdir
= nfs4_proc_mkdir
,
3743 .rmdir
= nfs4_proc_remove
,
3744 .readdir
= nfs4_proc_readdir
,
3745 .mknod
= nfs4_proc_mknod
,
3746 .statfs
= nfs4_proc_statfs
,
3747 .fsinfo
= nfs4_proc_fsinfo
,
3748 .pathconf
= nfs4_proc_pathconf
,
3749 .set_capabilities
= nfs4_server_capabilities
,
3750 .decode_dirent
= nfs4_decode_dirent
,
3751 .read_setup
= nfs4_proc_read_setup
,
3752 .read_done
= nfs4_read_done
,
3753 .write_setup
= nfs4_proc_write_setup
,
3754 .write_done
= nfs4_write_done
,
3755 .commit_setup
= nfs4_proc_commit_setup
,
3756 .commit_done
= nfs4_commit_done
,
3757 .lock
= nfs4_proc_lock
,
3758 .clear_acl_cache
= nfs4_zap_acl_attr
,