4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/utsname.h>
40 #include <linux/delay.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/sunrpc/clnt.h>
44 #include <linux/nfs.h>
45 #include <linux/nfs4.h>
46 #include <linux/nfs_fs.h>
47 #include <linux/nfs_page.h>
48 #include <linux/smp_lock.h>
49 #include <linux/namei.h>
50 #include <linux/mount.h>
53 #include "delegation.h"
56 #define NFSDBG_FACILITY NFSDBG_PROC
58 #define NFS4_POLL_RETRY_MIN (HZ/10)
59 #define NFS4_POLL_RETRY_MAX (15*HZ)
62 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
63 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
64 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*);
65 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
);
66 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
);
67 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
68 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
70 /* Prevent leaks of NFSv4 errors into userland */
71 int nfs4_map_errors(int err
)
74 dprintk("%s could not handle NFSv4 error %d\n",
82 * This is our standard bitmap for GETATTR requests.
84 const u32 nfs4_fattr_bitmap
[2] = {
89 | FATTR4_WORD0_FILEID
,
91 | FATTR4_WORD1_NUMLINKS
93 | FATTR4_WORD1_OWNER_GROUP
95 | FATTR4_WORD1_SPACE_USED
96 | FATTR4_WORD1_TIME_ACCESS
97 | FATTR4_WORD1_TIME_METADATA
98 | FATTR4_WORD1_TIME_MODIFY
101 const u32 nfs4_statfs_bitmap
[2] = {
102 FATTR4_WORD0_FILES_AVAIL
103 | FATTR4_WORD0_FILES_FREE
104 | FATTR4_WORD0_FILES_TOTAL
,
105 FATTR4_WORD1_SPACE_AVAIL
106 | FATTR4_WORD1_SPACE_FREE
107 | FATTR4_WORD1_SPACE_TOTAL
110 const u32 nfs4_pathconf_bitmap
[2] = {
112 | FATTR4_WORD0_MAXNAME
,
116 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
117 | FATTR4_WORD0_MAXREAD
118 | FATTR4_WORD0_MAXWRITE
119 | FATTR4_WORD0_LEASE_TIME
,
123 const u32 nfs4_fs_locations_bitmap
[2] = {
125 | FATTR4_WORD0_CHANGE
128 | FATTR4_WORD0_FILEID
129 | FATTR4_WORD0_FS_LOCATIONS
,
131 | FATTR4_WORD1_NUMLINKS
133 | FATTR4_WORD1_OWNER_GROUP
134 | FATTR4_WORD1_RAWDEV
135 | FATTR4_WORD1_SPACE_USED
136 | FATTR4_WORD1_TIME_ACCESS
137 | FATTR4_WORD1_TIME_METADATA
138 | FATTR4_WORD1_TIME_MODIFY
139 | FATTR4_WORD1_MOUNTED_ON_FILEID
142 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
143 struct nfs4_readdir_arg
*readdir
)
147 BUG_ON(readdir
->count
< 80);
149 readdir
->cookie
= cookie
;
150 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
155 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
160 * NFSv4 servers do not return entries for '.' and '..'
161 * Therefore, we fake these entries here. We let '.'
162 * have cookie 0 and '..' have cookie 1. Note that
163 * when talking to the server, we always send cookie 0
166 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
169 *p
++ = xdr_one
; /* next */
170 *p
++ = xdr_zero
; /* cookie, first word */
171 *p
++ = xdr_one
; /* cookie, second word */
172 *p
++ = xdr_one
; /* entry len */
173 memcpy(p
, ".\0\0\0", 4); /* entry */
175 *p
++ = xdr_one
; /* bitmap length */
176 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
177 *p
++ = htonl(8); /* attribute buffer length */
178 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
181 *p
++ = xdr_one
; /* next */
182 *p
++ = xdr_zero
; /* cookie, first word */
183 *p
++ = xdr_two
; /* cookie, second word */
184 *p
++ = xdr_two
; /* entry len */
185 memcpy(p
, "..\0\0", 4); /* entry */
187 *p
++ = xdr_one
; /* bitmap length */
188 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
189 *p
++ = htonl(8); /* attribute buffer length */
190 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
192 readdir
->pgbase
= (char *)p
- (char *)start
;
193 readdir
->count
-= readdir
->pgbase
;
194 kunmap_atomic(start
, KM_USER0
);
197 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
199 struct nfs_client
*clp
= server
->nfs_client
;
200 spin_lock(&clp
->cl_lock
);
201 if (time_before(clp
->cl_last_renewal
,timestamp
))
202 clp
->cl_last_renewal
= timestamp
;
203 spin_unlock(&clp
->cl_lock
);
206 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
208 struct nfs_inode
*nfsi
= NFS_I(dir
);
210 spin_lock(&dir
->i_lock
);
211 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
212 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
213 nfs_force_lookup_revalidate(dir
);
214 nfsi
->change_attr
= cinfo
->after
;
215 spin_unlock(&dir
->i_lock
);
218 struct nfs4_opendata
{
220 struct nfs_openargs o_arg
;
221 struct nfs_openres o_res
;
222 struct nfs_open_confirmargs c_arg
;
223 struct nfs_open_confirmres c_res
;
224 struct nfs_fattr f_attr
;
225 struct nfs_fattr dir_attr
;
228 struct nfs4_state_owner
*owner
;
229 struct nfs4_state
*state
;
231 unsigned long timestamp
;
232 unsigned int rpc_done
: 1;
238 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
240 p
->o_res
.f_attr
= &p
->f_attr
;
241 p
->o_res
.dir_attr
= &p
->dir_attr
;
242 p
->o_res
.server
= p
->o_arg
.server
;
243 nfs_fattr_init(&p
->f_attr
);
244 nfs_fattr_init(&p
->dir_attr
);
247 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
248 struct nfs4_state_owner
*sp
, int flags
,
249 const struct iattr
*attrs
)
251 struct dentry
*parent
= dget_parent(path
->dentry
);
252 struct inode
*dir
= parent
->d_inode
;
253 struct nfs_server
*server
= NFS_SERVER(dir
);
254 struct nfs4_opendata
*p
;
256 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
259 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
260 if (p
->o_arg
.seqid
== NULL
)
262 p
->path
.mnt
= mntget(path
->mnt
);
263 p
->path
.dentry
= dget(path
->dentry
);
266 atomic_inc(&sp
->so_count
);
267 p
->o_arg
.fh
= NFS_FH(dir
);
268 p
->o_arg
.open_flags
= flags
,
269 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
270 p
->o_arg
.id
= sp
->so_owner_id
.id
;
271 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
272 p
->o_arg
.server
= server
;
273 p
->o_arg
.bitmask
= server
->attr_bitmask
;
274 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
275 if (flags
& O_EXCL
) {
276 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
279 } else if (flags
& O_CREAT
) {
280 p
->o_arg
.u
.attrs
= &p
->attrs
;
281 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
283 p
->c_arg
.fh
= &p
->o_res
.fh
;
284 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
285 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
286 nfs4_init_opendata_res(p
);
296 static void nfs4_opendata_free(struct kref
*kref
)
298 struct nfs4_opendata
*p
= container_of(kref
,
299 struct nfs4_opendata
, kref
);
301 nfs_free_seqid(p
->o_arg
.seqid
);
302 if (p
->state
!= NULL
)
303 nfs4_put_open_state(p
->state
);
304 nfs4_put_state_owner(p
->owner
);
306 dput(p
->path
.dentry
);
311 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
314 kref_put(&p
->kref
, nfs4_opendata_free
);
317 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
322 rpc_clnt_sigmask(task
->tk_client
, &oldset
);
323 ret
= rpc_wait_for_completion_task(task
);
324 rpc_clnt_sigunmask(task
->tk_client
, &oldset
);
328 static int can_open_cached(struct nfs4_state
*state
, int mode
)
331 switch (mode
& (FMODE_READ
|FMODE_WRITE
|O_EXCL
)) {
333 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0;
336 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0;
338 case FMODE_READ
|FMODE_WRITE
:
339 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0;
344 static int can_open_delegated(struct nfs_delegation
*delegation
, mode_t open_flags
)
346 if ((delegation
->type
& open_flags
) != open_flags
)
348 if (delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)
353 static void update_open_stateflags(struct nfs4_state
*state
, mode_t open_flags
)
355 switch (open_flags
) {
362 case FMODE_READ
|FMODE_WRITE
:
365 nfs4_state_set_mode_locked(state
, state
->state
| open_flags
);
368 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, int open_flags
)
370 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
371 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
372 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
373 switch (open_flags
) {
375 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
378 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
380 case FMODE_READ
|FMODE_WRITE
:
381 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
385 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, int open_flags
)
387 write_seqlock(&state
->seqlock
);
388 nfs_set_open_stateid_locked(state
, stateid
, open_flags
);
389 write_sequnlock(&state
->seqlock
);
392 static void update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*deleg_stateid
, int open_flags
)
394 open_flags
&= (FMODE_READ
|FMODE_WRITE
);
396 * Protect the call to nfs4_state_set_mode_locked and
397 * serialise the stateid update
399 write_seqlock(&state
->seqlock
);
400 if (deleg_stateid
!= NULL
) {
401 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
402 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
404 if (open_stateid
!= NULL
)
405 nfs_set_open_stateid_locked(state
, open_stateid
, open_flags
);
406 write_sequnlock(&state
->seqlock
);
407 spin_lock(&state
->owner
->so_lock
);
408 update_open_stateflags(state
, open_flags
);
409 spin_unlock(&state
->owner
->so_lock
);
412 static void nfs4_return_incompatible_delegation(struct inode
*inode
, mode_t open_flags
)
414 struct nfs_delegation
*delegation
;
417 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
418 if (delegation
== NULL
|| (delegation
->type
& open_flags
) == open_flags
) {
423 nfs_inode_return_delegation(inode
);
426 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
428 struct nfs4_state
*state
= opendata
->state
;
429 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
430 struct nfs_delegation
*delegation
;
431 int open_mode
= opendata
->o_arg
.open_flags
& (FMODE_READ
|FMODE_WRITE
|O_EXCL
);
432 nfs4_stateid stateid
;
436 delegation
= rcu_dereference(nfsi
->delegation
);
438 if (can_open_cached(state
, open_mode
)) {
439 spin_lock(&state
->owner
->so_lock
);
440 if (can_open_cached(state
, open_mode
)) {
441 update_open_stateflags(state
, open_mode
);
442 spin_unlock(&state
->owner
->so_lock
);
444 goto out_return_state
;
446 spin_unlock(&state
->owner
->so_lock
);
448 if (delegation
== NULL
)
450 if (!can_open_delegated(delegation
, open_mode
))
452 /* Save the delegation */
453 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
456 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
462 delegation
= rcu_dereference(nfsi
->delegation
);
463 /* If no delegation, try a cached open */
464 if (delegation
== NULL
)
466 /* Is the delegation still valid? */
467 if (memcmp(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
)) != 0)
470 update_open_stateid(state
, NULL
, &stateid
, open_mode
);
471 goto out_return_state
;
477 atomic_inc(&state
->count
);
481 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
484 struct nfs4_state
*state
= NULL
;
485 struct nfs_delegation
*delegation
;
486 nfs4_stateid
*deleg_stateid
= NULL
;
489 if (!data
->rpc_done
) {
490 state
= nfs4_try_open_cached(data
);
495 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
497 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
498 ret
= PTR_ERR(inode
);
502 state
= nfs4_get_open_state(inode
, data
->owner
);
505 if (data
->o_res
.delegation_type
!= 0) {
506 int delegation_flags
= 0;
509 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
511 delegation_flags
= delegation
->flags
;
513 if (!(delegation_flags
& NFS_DELEGATION_NEED_RECLAIM
))
514 nfs_inode_set_delegation(state
->inode
,
515 data
->owner
->so_cred
,
518 nfs_inode_reclaim_delegation(state
->inode
,
519 data
->owner
->so_cred
,
523 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
524 if (delegation
!= NULL
)
525 deleg_stateid
= &delegation
->stateid
;
526 update_open_stateid(state
, &data
->o_res
.stateid
, deleg_stateid
, data
->o_arg
.open_flags
);
537 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
539 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
540 struct nfs_open_context
*ctx
;
542 spin_lock(&state
->inode
->i_lock
);
543 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
544 if (ctx
->state
!= state
)
546 get_nfs_open_context(ctx
);
547 spin_unlock(&state
->inode
->i_lock
);
550 spin_unlock(&state
->inode
->i_lock
);
551 return ERR_PTR(-ENOENT
);
554 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
556 struct nfs4_opendata
*opendata
;
558 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, NULL
);
559 if (opendata
== NULL
)
560 return ERR_PTR(-ENOMEM
);
561 opendata
->state
= state
;
562 atomic_inc(&state
->count
);
566 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, mode_t openflags
, struct nfs4_state
**res
)
568 struct nfs4_state
*newstate
;
571 opendata
->o_arg
.open_flags
= openflags
;
572 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
573 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
574 nfs4_init_opendata_res(opendata
);
575 ret
= _nfs4_proc_open(opendata
);
578 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
579 if (IS_ERR(newstate
))
580 return PTR_ERR(newstate
);
581 nfs4_close_state(&opendata
->path
, newstate
, openflags
);
586 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
588 struct nfs4_state
*newstate
;
591 /* memory barrier prior to reading state->n_* */
592 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
594 if (state
->n_rdwr
!= 0) {
595 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
598 if (newstate
!= state
)
601 if (state
->n_wronly
!= 0) {
602 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
605 if (newstate
!= state
)
608 if (state
->n_rdonly
!= 0) {
609 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
612 if (newstate
!= state
)
616 * We may have performed cached opens for all three recoveries.
617 * Check if we need to update the current stateid.
619 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
620 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
621 write_seqlock(&state
->seqlock
);
622 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
623 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
624 write_sequnlock(&state
->seqlock
);
631 * reclaim state on the server after a reboot.
633 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
635 struct nfs_delegation
*delegation
;
636 struct nfs4_opendata
*opendata
;
637 int delegation_type
= 0;
640 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
641 if (IS_ERR(opendata
))
642 return PTR_ERR(opendata
);
643 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
644 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
646 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
647 if (delegation
!= NULL
&& (delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
) != 0)
648 delegation_type
= delegation
->type
;
650 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
651 status
= nfs4_open_recover(opendata
, state
);
652 nfs4_opendata_put(opendata
);
656 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
658 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
659 struct nfs4_exception exception
= { };
662 err
= _nfs4_do_open_reclaim(ctx
, state
);
663 if (err
!= -NFS4ERR_DELAY
)
665 nfs4_handle_exception(server
, err
, &exception
);
666 } while (exception
.retry
);
670 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
672 struct nfs_open_context
*ctx
;
675 ctx
= nfs4_state_find_open_context(state
);
678 ret
= nfs4_do_open_reclaim(ctx
, state
);
679 put_nfs_open_context(ctx
);
683 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
685 struct nfs4_opendata
*opendata
;
688 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
689 if (IS_ERR(opendata
))
690 return PTR_ERR(opendata
);
691 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
692 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
693 sizeof(opendata
->o_arg
.u
.delegation
.data
));
694 ret
= nfs4_open_recover(opendata
, state
);
695 nfs4_opendata_put(opendata
);
699 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
701 struct nfs4_exception exception
= { };
702 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
705 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
709 case -NFS4ERR_STALE_CLIENTID
:
710 case -NFS4ERR_STALE_STATEID
:
711 case -NFS4ERR_EXPIRED
:
712 /* Don't recall a delegation if it was lost */
713 nfs4_schedule_state_recovery(server
->nfs_client
);
716 err
= nfs4_handle_exception(server
, err
, &exception
);
717 } while (exception
.retry
);
721 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
723 struct nfs4_opendata
*data
= calldata
;
725 data
->rpc_status
= task
->tk_status
;
726 if (RPC_ASSASSINATED(task
))
728 if (data
->rpc_status
== 0) {
729 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
730 sizeof(data
->o_res
.stateid
.data
));
731 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
732 renew_lease(data
->o_res
.server
, data
->timestamp
);
735 nfs_increment_open_seqid(data
->rpc_status
, data
->c_arg
.seqid
);
738 static void nfs4_open_confirm_release(void *calldata
)
740 struct nfs4_opendata
*data
= calldata
;
741 struct nfs4_state
*state
= NULL
;
743 /* If this request hasn't been cancelled, do nothing */
744 if (data
->cancelled
== 0)
746 /* In case of error, no cleanup! */
749 state
= nfs4_opendata_to_nfs4_state(data
);
751 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
753 nfs4_opendata_put(data
);
756 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
757 .rpc_call_done
= nfs4_open_confirm_done
,
758 .rpc_release
= nfs4_open_confirm_release
,
762 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
764 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
766 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
767 struct rpc_task
*task
;
768 struct rpc_message msg
= {
769 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
770 .rpc_argp
= &data
->c_arg
,
771 .rpc_resp
= &data
->c_res
,
772 .rpc_cred
= data
->owner
->so_cred
,
774 struct rpc_task_setup task_setup_data
= {
775 .rpc_client
= server
->client
,
777 .callback_ops
= &nfs4_open_confirm_ops
,
778 .callback_data
= data
,
779 .flags
= RPC_TASK_ASYNC
,
783 kref_get(&data
->kref
);
785 data
->rpc_status
= 0;
786 data
->timestamp
= jiffies
;
787 task
= rpc_run_task(&task_setup_data
);
789 return PTR_ERR(task
);
790 status
= nfs4_wait_for_completion_rpc_task(task
);
795 status
= data
->rpc_status
;
800 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
802 struct nfs4_opendata
*data
= calldata
;
803 struct nfs4_state_owner
*sp
= data
->owner
;
805 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
808 * Check if we still need to send an OPEN call, or if we can use
809 * a delegation instead.
811 if (data
->state
!= NULL
) {
812 struct nfs_delegation
*delegation
;
814 if (can_open_cached(data
->state
, data
->o_arg
.open_flags
& (FMODE_READ
|FMODE_WRITE
|O_EXCL
)))
817 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
818 if (delegation
!= NULL
&&
819 (delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
) == 0) {
825 /* Update sequence id. */
826 data
->o_arg
.id
= sp
->so_owner_id
.id
;
827 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
828 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
829 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
830 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
832 data
->timestamp
= jiffies
;
833 rpc_call_start(task
);
836 task
->tk_action
= NULL
;
840 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
842 struct nfs4_opendata
*data
= calldata
;
844 data
->rpc_status
= task
->tk_status
;
845 if (RPC_ASSASSINATED(task
))
847 if (task
->tk_status
== 0) {
848 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
852 data
->rpc_status
= -ELOOP
;
855 data
->rpc_status
= -EISDIR
;
858 data
->rpc_status
= -ENOTDIR
;
860 renew_lease(data
->o_res
.server
, data
->timestamp
);
861 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
862 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
864 nfs_increment_open_seqid(data
->rpc_status
, data
->o_arg
.seqid
);
868 static void nfs4_open_release(void *calldata
)
870 struct nfs4_opendata
*data
= calldata
;
871 struct nfs4_state
*state
= NULL
;
873 /* If this request hasn't been cancelled, do nothing */
874 if (data
->cancelled
== 0)
876 /* In case of error, no cleanup! */
877 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
879 /* In case we need an open_confirm, no cleanup! */
880 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
882 state
= nfs4_opendata_to_nfs4_state(data
);
884 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
886 nfs4_opendata_put(data
);
889 static const struct rpc_call_ops nfs4_open_ops
= {
890 .rpc_call_prepare
= nfs4_open_prepare
,
891 .rpc_call_done
= nfs4_open_done
,
892 .rpc_release
= nfs4_open_release
,
896 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
898 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
900 struct inode
*dir
= data
->dir
->d_inode
;
901 struct nfs_server
*server
= NFS_SERVER(dir
);
902 struct nfs_openargs
*o_arg
= &data
->o_arg
;
903 struct nfs_openres
*o_res
= &data
->o_res
;
904 struct rpc_task
*task
;
905 struct rpc_message msg
= {
906 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
909 .rpc_cred
= data
->owner
->so_cred
,
911 struct rpc_task_setup task_setup_data
= {
912 .rpc_client
= server
->client
,
914 .callback_ops
= &nfs4_open_ops
,
915 .callback_data
= data
,
916 .flags
= RPC_TASK_ASYNC
,
920 kref_get(&data
->kref
);
922 data
->rpc_status
= 0;
924 task
= rpc_run_task(&task_setup_data
);
926 return PTR_ERR(task
);
927 status
= nfs4_wait_for_completion_rpc_task(task
);
932 status
= data
->rpc_status
;
934 if (status
!= 0 || !data
->rpc_done
)
937 if (o_res
->fh
.size
== 0)
938 _nfs4_proc_lookup(dir
, o_arg
->name
, &o_res
->fh
, o_res
->f_attr
);
940 if (o_arg
->open_flags
& O_CREAT
) {
941 update_changeattr(dir
, &o_res
->cinfo
);
942 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
944 nfs_refresh_inode(dir
, o_res
->dir_attr
);
945 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
946 status
= _nfs4_proc_open_confirm(data
);
950 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
951 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
955 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
957 struct nfs_client
*clp
= server
->nfs_client
;
961 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
964 if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
))
966 nfs4_schedule_state_recovery(clp
);
973 * reclaim state on the server after a network partition.
974 * Assumes caller holds the appropriate lock
976 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
978 struct nfs4_opendata
*opendata
;
981 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
982 if (IS_ERR(opendata
))
983 return PTR_ERR(opendata
);
984 ret
= nfs4_open_recover(opendata
, state
);
985 if (ret
== -ESTALE
) {
986 /* Invalidate the state owner so we don't ever use it again */
987 nfs4_drop_state_owner(state
->owner
);
988 d_drop(ctx
->path
.dentry
);
990 nfs4_opendata_put(opendata
);
994 static inline int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
996 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
997 struct nfs4_exception exception
= { };
1001 err
= _nfs4_open_expired(ctx
, state
);
1002 if (err
== -NFS4ERR_DELAY
)
1003 nfs4_handle_exception(server
, err
, &exception
);
1004 } while (exception
.retry
);
1008 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1010 struct nfs_open_context
*ctx
;
1013 ctx
= nfs4_state_find_open_context(state
);
1015 return PTR_ERR(ctx
);
1016 ret
= nfs4_do_open_expired(ctx
, state
);
1017 put_nfs_open_context(ctx
);
1022 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1023 * fields corresponding to attributes that were used to store the verifier.
1024 * Make sure we clobber those fields in the later setattr call
1026 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1028 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1029 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1030 sattr
->ia_valid
|= ATTR_ATIME
;
1032 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1033 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1034 sattr
->ia_valid
|= ATTR_MTIME
;
1038 * Returns a referenced nfs4_state
1040 static int _nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
1042 struct nfs4_state_owner
*sp
;
1043 struct nfs4_state
*state
= NULL
;
1044 struct nfs_server
*server
= NFS_SERVER(dir
);
1045 struct nfs_client
*clp
= server
->nfs_client
;
1046 struct nfs4_opendata
*opendata
;
1049 /* Protect against reboot recovery conflicts */
1051 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1052 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1055 status
= nfs4_recover_expired_lease(server
);
1057 goto err_put_state_owner
;
1058 if (path
->dentry
->d_inode
!= NULL
)
1059 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, flags
& (FMODE_READ
|FMODE_WRITE
));
1060 down_read(&clp
->cl_sem
);
1062 opendata
= nfs4_opendata_alloc(path
, sp
, flags
, sattr
);
1063 if (opendata
== NULL
)
1064 goto err_release_rwsem
;
1066 if (path
->dentry
->d_inode
!= NULL
)
1067 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1069 status
= _nfs4_proc_open(opendata
);
1071 goto err_opendata_put
;
1073 if (opendata
->o_arg
.open_flags
& O_EXCL
)
1074 nfs4_exclusive_attrset(opendata
, sattr
);
1076 state
= nfs4_opendata_to_nfs4_state(opendata
);
1077 status
= PTR_ERR(state
);
1079 goto err_opendata_put
;
1080 nfs4_opendata_put(opendata
);
1081 nfs4_put_state_owner(sp
);
1082 up_read(&clp
->cl_sem
);
1086 nfs4_opendata_put(opendata
);
1088 up_read(&clp
->cl_sem
);
1089 err_put_state_owner
:
1090 nfs4_put_state_owner(sp
);
1097 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1099 struct nfs4_exception exception
= { };
1100 struct nfs4_state
*res
;
1104 status
= _nfs4_do_open(dir
, path
, flags
, sattr
, cred
, &res
);
1107 /* NOTE: BAD_SEQID means the server and client disagree about the
1108 * book-keeping w.r.t. state-changing operations
1109 * (OPEN/CLOSE/LOCK/LOCKU...)
1110 * It is actually a sign of a bug on the client or on the server.
1112 * If we receive a BAD_SEQID error in the particular case of
1113 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1114 * have unhashed the old state_owner for us, and that we can
1115 * therefore safely retry using a new one. We should still warn
1116 * the user though...
1118 if (status
== -NFS4ERR_BAD_SEQID
) {
1119 printk(KERN_WARNING
"NFS: v4 server %s "
1120 " returned a bad sequence-id error!\n",
1121 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1122 exception
.retry
= 1;
1126 * BAD_STATEID on OPEN means that the server cancelled our
1127 * state before it received the OPEN_CONFIRM.
1128 * Recover by retrying the request as per the discussion
1129 * on Page 181 of RFC3530.
1131 if (status
== -NFS4ERR_BAD_STATEID
) {
1132 exception
.retry
= 1;
1135 if (status
== -EAGAIN
) {
1136 /* We must have found a delegation */
1137 exception
.retry
= 1;
1140 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1141 status
, &exception
));
1142 } while (exception
.retry
);
1146 static int _nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1147 struct iattr
*sattr
, struct nfs4_state
*state
)
1149 struct nfs_server
*server
= NFS_SERVER(inode
);
1150 struct nfs_setattrargs arg
= {
1151 .fh
= NFS_FH(inode
),
1154 .bitmask
= server
->attr_bitmask
,
1156 struct nfs_setattrres res
= {
1160 struct rpc_message msg
= {
1161 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1165 unsigned long timestamp
= jiffies
;
1168 nfs_fattr_init(fattr
);
1170 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1171 /* Use that stateid */
1172 } else if (state
!= NULL
) {
1173 msg
.rpc_cred
= state
->owner
->so_cred
;
1174 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1176 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1178 status
= rpc_call_sync(server
->client
, &msg
, 0);
1179 if (status
== 0 && state
!= NULL
)
1180 renew_lease(server
, timestamp
);
1184 static int nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1185 struct iattr
*sattr
, struct nfs4_state
*state
)
1187 struct nfs_server
*server
= NFS_SERVER(inode
);
1188 struct nfs4_exception exception
= { };
1191 err
= nfs4_handle_exception(server
,
1192 _nfs4_do_setattr(inode
, fattr
, sattr
, state
),
1194 } while (exception
.retry
);
1198 struct nfs4_closedata
{
1200 struct inode
*inode
;
1201 struct nfs4_state
*state
;
1202 struct nfs_closeargs arg
;
1203 struct nfs_closeres res
;
1204 struct nfs_fattr fattr
;
1205 unsigned long timestamp
;
1208 static void nfs4_free_closedata(void *data
)
1210 struct nfs4_closedata
*calldata
= data
;
1211 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1213 nfs4_put_open_state(calldata
->state
);
1214 nfs_free_seqid(calldata
->arg
.seqid
);
1215 nfs4_put_state_owner(sp
);
1216 dput(calldata
->path
.dentry
);
1217 mntput(calldata
->path
.mnt
);
1221 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1223 struct nfs4_closedata
*calldata
= data
;
1224 struct nfs4_state
*state
= calldata
->state
;
1225 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1227 if (RPC_ASSASSINATED(task
))
1229 /* hmm. we are done with the inode, and in the process of freeing
1230 * the state_owner. we keep this around to process errors
1232 nfs_increment_open_seqid(task
->tk_status
, calldata
->arg
.seqid
);
1233 switch (task
->tk_status
) {
1235 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1236 renew_lease(server
, calldata
->timestamp
);
1238 case -NFS4ERR_STALE_STATEID
:
1239 case -NFS4ERR_EXPIRED
:
1242 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
1243 rpc_restart_call(task
);
1247 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1250 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1252 struct nfs4_closedata
*calldata
= data
;
1253 struct nfs4_state
*state
= calldata
->state
;
1254 int clear_rd
, clear_wr
, clear_rdwr
;
1256 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1259 clear_rd
= clear_wr
= clear_rdwr
= 0;
1260 spin_lock(&state
->owner
->so_lock
);
1261 /* Calculate the change in open mode */
1262 if (state
->n_rdwr
== 0) {
1263 if (state
->n_rdonly
== 0) {
1264 clear_rd
|= test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1265 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1267 if (state
->n_wronly
== 0) {
1268 clear_wr
|= test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1269 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1272 spin_unlock(&state
->owner
->so_lock
);
1273 if (!clear_rd
&& !clear_wr
&& !clear_rdwr
) {
1274 /* Note: exit _without_ calling nfs4_close_done */
1275 task
->tk_action
= NULL
;
1278 nfs_fattr_init(calldata
->res
.fattr
);
1279 if (test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0) {
1280 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1281 calldata
->arg
.open_flags
= FMODE_READ
;
1282 } else if (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0) {
1283 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1284 calldata
->arg
.open_flags
= FMODE_WRITE
;
1286 calldata
->timestamp
= jiffies
;
1287 rpc_call_start(task
);
1290 static const struct rpc_call_ops nfs4_close_ops
= {
1291 .rpc_call_prepare
= nfs4_close_prepare
,
1292 .rpc_call_done
= nfs4_close_done
,
1293 .rpc_release
= nfs4_free_closedata
,
1297 * It is possible for data to be read/written from a mem-mapped file
1298 * after the sys_close call (which hits the vfs layer as a flush).
1299 * This means that we can't safely call nfsv4 close on a file until
1300 * the inode is cleared. This in turn means that we are not good
1301 * NFSv4 citizens - we do not indicate to the server to update the file's
1302 * share state even when we are done with one of the three share
1303 * stateid's in the inode.
1305 * NOTE: Caller must be holding the sp->so_owner semaphore!
1307 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, int wait
)
1309 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1310 struct nfs4_closedata
*calldata
;
1311 struct nfs4_state_owner
*sp
= state
->owner
;
1312 struct rpc_task
*task
;
1313 struct rpc_message msg
= {
1314 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1315 .rpc_cred
= state
->owner
->so_cred
,
1317 struct rpc_task_setup task_setup_data
= {
1318 .rpc_client
= server
->client
,
1319 .rpc_message
= &msg
,
1320 .callback_ops
= &nfs4_close_ops
,
1321 .flags
= RPC_TASK_ASYNC
,
1323 int status
= -ENOMEM
;
1325 calldata
= kmalloc(sizeof(*calldata
), GFP_KERNEL
);
1326 if (calldata
== NULL
)
1328 calldata
->inode
= state
->inode
;
1329 calldata
->state
= state
;
1330 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1331 calldata
->arg
.stateid
= &state
->open_stateid
;
1332 /* Serialization for the sequence id */
1333 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1334 if (calldata
->arg
.seqid
== NULL
)
1335 goto out_free_calldata
;
1336 calldata
->arg
.bitmask
= server
->attr_bitmask
;
1337 calldata
->res
.fattr
= &calldata
->fattr
;
1338 calldata
->res
.server
= server
;
1339 calldata
->path
.mnt
= mntget(path
->mnt
);
1340 calldata
->path
.dentry
= dget(path
->dentry
);
1342 msg
.rpc_argp
= &calldata
->arg
,
1343 msg
.rpc_resp
= &calldata
->res
,
1344 task_setup_data
.callback_data
= calldata
;
1345 task
= rpc_run_task(&task_setup_data
);
1347 return PTR_ERR(task
);
1350 status
= rpc_wait_for_completion_task(task
);
1356 nfs4_put_open_state(state
);
1357 nfs4_put_state_owner(sp
);
1361 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
)
1366 /* If the open_intent is for execute, we have an extra check to make */
1367 if (nd
->intent
.open
.flags
& FMODE_EXEC
) {
1368 ret
= nfs_may_open(state
->inode
,
1369 state
->owner
->so_cred
,
1370 nd
->intent
.open
.flags
);
1374 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1375 if (!IS_ERR(filp
)) {
1376 struct nfs_open_context
*ctx
;
1377 ctx
= nfs_file_open_context(filp
);
1381 ret
= PTR_ERR(filp
);
1383 nfs4_close_sync(path
, state
, nd
->intent
.open
.flags
);
1388 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1390 struct dentry
*parent
;
1391 struct path path
= {
1396 struct rpc_cred
*cred
;
1397 struct nfs4_state
*state
;
1400 if (nd
->flags
& LOOKUP_CREATE
) {
1401 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1402 attr
.ia_valid
= ATTR_MODE
;
1403 if (!IS_POSIXACL(dir
))
1404 attr
.ia_mode
&= ~current
->fs
->umask
;
1407 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1410 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1412 return (struct dentry
*)cred
;
1413 parent
= dentry
->d_parent
;
1414 /* Protect against concurrent sillydeletes */
1415 nfs_block_sillyrename(parent
);
1416 state
= nfs4_do_open(dir
, &path
, nd
->intent
.open
.flags
, &attr
, cred
);
1418 if (IS_ERR(state
)) {
1419 if (PTR_ERR(state
) == -ENOENT
) {
1420 d_add(dentry
, NULL
);
1421 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1423 nfs_unblock_sillyrename(parent
);
1424 return (struct dentry
*)state
;
1426 res
= d_add_unique(dentry
, igrab(state
->inode
));
1429 nfs_set_verifier(path
.dentry
, nfs_save_change_attribute(dir
));
1430 nfs_unblock_sillyrename(parent
);
1431 nfs4_intent_set_file(nd
, &path
, state
);
1436 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1438 struct path path
= {
1442 struct rpc_cred
*cred
;
1443 struct nfs4_state
*state
;
1445 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1447 return PTR_ERR(cred
);
1448 state
= nfs4_do_open(dir
, &path
, openflags
, NULL
, cred
);
1450 if (IS_ERR(state
)) {
1451 switch (PTR_ERR(state
)) {
1457 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1463 if (state
->inode
== dentry
->d_inode
) {
1464 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1465 nfs4_intent_set_file(nd
, &path
, state
);
1468 nfs4_close_sync(&path
, state
, openflags
);
1475 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1477 struct nfs4_server_caps_res res
= {};
1478 struct rpc_message msg
= {
1479 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1480 .rpc_argp
= fhandle
,
1485 status
= rpc_call_sync(server
->client
, &msg
, 0);
1487 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
1488 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
1489 server
->caps
|= NFS_CAP_ACLS
;
1490 if (res
.has_links
!= 0)
1491 server
->caps
|= NFS_CAP_HARDLINKS
;
1492 if (res
.has_symlinks
!= 0)
1493 server
->caps
|= NFS_CAP_SYMLINKS
;
1494 server
->acl_bitmask
= res
.acl_bitmask
;
1499 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1501 struct nfs4_exception exception
= { };
1504 err
= nfs4_handle_exception(server
,
1505 _nfs4_server_capabilities(server
, fhandle
),
1507 } while (exception
.retry
);
1511 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1512 struct nfs_fsinfo
*info
)
1514 struct nfs4_lookup_root_arg args
= {
1515 .bitmask
= nfs4_fattr_bitmap
,
1517 struct nfs4_lookup_res res
= {
1519 .fattr
= info
->fattr
,
1522 struct rpc_message msg
= {
1523 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
1527 nfs_fattr_init(info
->fattr
);
1528 return rpc_call_sync(server
->client
, &msg
, 0);
1531 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1532 struct nfs_fsinfo
*info
)
1534 struct nfs4_exception exception
= { };
1537 err
= nfs4_handle_exception(server
,
1538 _nfs4_lookup_root(server
, fhandle
, info
),
1540 } while (exception
.retry
);
1545 * get the file handle for the "/" directory on the server
1547 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1548 struct nfs_fsinfo
*info
)
1552 status
= nfs4_lookup_root(server
, fhandle
, info
);
1554 status
= nfs4_server_capabilities(server
, fhandle
);
1556 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
1557 return nfs4_map_errors(status
);
1561 * Get locations and (maybe) other attributes of a referral.
1562 * Note that we'll actually follow the referral later when
1563 * we detect fsid mismatch in inode revalidation
1565 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
1567 int status
= -ENOMEM
;
1568 struct page
*page
= NULL
;
1569 struct nfs4_fs_locations
*locations
= NULL
;
1571 page
= alloc_page(GFP_KERNEL
);
1574 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
1575 if (locations
== NULL
)
1578 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
1581 /* Make sure server returned a different fsid for the referral */
1582 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
1583 dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__
, name
->name
);
1588 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
1589 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
1591 fattr
->mode
= S_IFDIR
;
1592 memset(fhandle
, 0, sizeof(struct nfs_fh
));
1601 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1603 struct nfs4_getattr_arg args
= {
1605 .bitmask
= server
->attr_bitmask
,
1607 struct nfs4_getattr_res res
= {
1611 struct rpc_message msg
= {
1612 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
1617 nfs_fattr_init(fattr
);
1618 return rpc_call_sync(server
->client
, &msg
, 0);
1621 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1623 struct nfs4_exception exception
= { };
1626 err
= nfs4_handle_exception(server
,
1627 _nfs4_proc_getattr(server
, fhandle
, fattr
),
1629 } while (exception
.retry
);
1634 * The file is not closed if it is opened due to the a request to change
1635 * the size of the file. The open call will not be needed once the
1636 * VFS layer lookup-intents are implemented.
1638 * Close is called when the inode is destroyed.
1639 * If we haven't opened the file for O_WRONLY, we
1640 * need to in the size_change case to obtain a stateid.
1643 * Because OPEN is always done by name in nfsv4, it is
1644 * possible that we opened a different file by the same
1645 * name. We can recognize this race condition, but we
1646 * can't do anything about it besides returning an error.
1648 * This will be fixed with VFS changes (lookup-intent).
1651 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
1652 struct iattr
*sattr
)
1654 struct rpc_cred
*cred
;
1655 struct inode
*inode
= dentry
->d_inode
;
1656 struct nfs_open_context
*ctx
;
1657 struct nfs4_state
*state
= NULL
;
1660 nfs_fattr_init(fattr
);
1662 cred
= rpcauth_lookupcred(NFS_CLIENT(inode
)->cl_auth
, 0);
1664 return PTR_ERR(cred
);
1666 /* Search for an existing open(O_WRITE) file */
1667 ctx
= nfs_find_open_context(inode
, cred
, FMODE_WRITE
);
1671 status
= nfs4_do_setattr(inode
, fattr
, sattr
, state
);
1673 nfs_setattr_update_inode(inode
, sattr
);
1675 put_nfs_open_context(ctx
);
1680 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
1681 const struct qstr
*name
, struct nfs_fh
*fhandle
,
1682 struct nfs_fattr
*fattr
)
1685 struct nfs4_lookup_arg args
= {
1686 .bitmask
= server
->attr_bitmask
,
1690 struct nfs4_lookup_res res
= {
1695 struct rpc_message msg
= {
1696 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1701 nfs_fattr_init(fattr
);
1703 dprintk("NFS call lookupfh %s\n", name
->name
);
1704 status
= rpc_call_sync(server
->client
, &msg
, 0);
1705 dprintk("NFS reply lookupfh: %d\n", status
);
1709 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1710 struct qstr
*name
, struct nfs_fh
*fhandle
,
1711 struct nfs_fattr
*fattr
)
1713 struct nfs4_exception exception
= { };
1716 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
1718 if (err
== -NFS4ERR_MOVED
) {
1722 err
= nfs4_handle_exception(server
, err
, &exception
);
1723 } while (exception
.retry
);
1727 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
1728 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1732 dprintk("NFS call lookup %s\n", name
->name
);
1733 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
1734 if (status
== -NFS4ERR_MOVED
)
1735 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
1736 dprintk("NFS reply lookup: %d\n", status
);
1740 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1742 struct nfs4_exception exception
= { };
1745 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1746 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
1748 } while (exception
.retry
);
1752 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1754 struct nfs_server
*server
= NFS_SERVER(inode
);
1755 struct nfs_fattr fattr
;
1756 struct nfs4_accessargs args
= {
1757 .fh
= NFS_FH(inode
),
1758 .bitmask
= server
->attr_bitmask
,
1760 struct nfs4_accessres res
= {
1764 struct rpc_message msg
= {
1765 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
1768 .rpc_cred
= entry
->cred
,
1770 int mode
= entry
->mask
;
1774 * Determine which access bits we want to ask for...
1776 if (mode
& MAY_READ
)
1777 args
.access
|= NFS4_ACCESS_READ
;
1778 if (S_ISDIR(inode
->i_mode
)) {
1779 if (mode
& MAY_WRITE
)
1780 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
1781 if (mode
& MAY_EXEC
)
1782 args
.access
|= NFS4_ACCESS_LOOKUP
;
1784 if (mode
& MAY_WRITE
)
1785 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
1786 if (mode
& MAY_EXEC
)
1787 args
.access
|= NFS4_ACCESS_EXECUTE
;
1789 nfs_fattr_init(&fattr
);
1790 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1793 if (res
.access
& NFS4_ACCESS_READ
)
1794 entry
->mask
|= MAY_READ
;
1795 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
1796 entry
->mask
|= MAY_WRITE
;
1797 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
1798 entry
->mask
|= MAY_EXEC
;
1799 nfs_refresh_inode(inode
, &fattr
);
1804 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1806 struct nfs4_exception exception
= { };
1809 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1810 _nfs4_proc_access(inode
, entry
),
1812 } while (exception
.retry
);
1817 * TODO: For the time being, we don't try to get any attributes
1818 * along with any of the zero-copy operations READ, READDIR,
1821 * In the case of the first three, we want to put the GETATTR
1822 * after the read-type operation -- this is because it is hard
1823 * to predict the length of a GETATTR response in v4, and thus
1824 * align the READ data correctly. This means that the GETATTR
1825 * may end up partially falling into the page cache, and we should
1826 * shift it into the 'tail' of the xdr_buf before processing.
1827 * To do this efficiently, we need to know the total length
1828 * of data received, which doesn't seem to be available outside
1831 * In the case of WRITE, we also want to put the GETATTR after
1832 * the operation -- in this case because we want to make sure
1833 * we get the post-operation mtime and size. This means that
1834 * we can't use xdr_encode_pages() as written: we need a variant
1835 * of it which would leave room in the 'tail' iovec.
1837 * Both of these changes to the XDR layer would in fact be quite
1838 * minor, but I decided to leave them for a subsequent patch.
1840 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1841 unsigned int pgbase
, unsigned int pglen
)
1843 struct nfs4_readlink args
= {
1844 .fh
= NFS_FH(inode
),
1849 struct rpc_message msg
= {
1850 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
1855 return rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1858 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1859 unsigned int pgbase
, unsigned int pglen
)
1861 struct nfs4_exception exception
= { };
1864 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1865 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
1867 } while (exception
.retry
);
1873 * We will need to arrange for the VFS layer to provide an atomic open.
1874 * Until then, this create/open method is prone to inefficiency and race
1875 * conditions due to the lookup, create, and open VFS calls from sys_open()
1876 * placed on the wire.
1878 * Given the above sorry state of affairs, I'm simply sending an OPEN.
1879 * The file will be opened again in the subsequent VFS open call
1880 * (nfs4_proc_file_open).
1882 * The open for read will just hang around to be used by any process that
1883 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
1887 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
1888 int flags
, struct nameidata
*nd
)
1890 struct path path
= {
1894 struct nfs4_state
*state
;
1895 struct rpc_cred
*cred
;
1898 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1900 status
= PTR_ERR(cred
);
1903 state
= nfs4_do_open(dir
, &path
, flags
, sattr
, cred
);
1906 if (IS_ERR(state
)) {
1907 status
= PTR_ERR(state
);
1910 d_add(dentry
, igrab(state
->inode
));
1911 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1912 if (flags
& O_EXCL
) {
1913 struct nfs_fattr fattr
;
1914 status
= nfs4_do_setattr(state
->inode
, &fattr
, sattr
, state
);
1916 nfs_setattr_update_inode(state
->inode
, sattr
);
1917 nfs_post_op_update_inode(state
->inode
, &fattr
);
1919 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
1920 status
= nfs4_intent_set_file(nd
, &path
, state
);
1922 nfs4_close_sync(&path
, state
, flags
);
1927 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1929 struct nfs_server
*server
= NFS_SERVER(dir
);
1930 struct nfs_removeargs args
= {
1932 .name
.len
= name
->len
,
1933 .name
.name
= name
->name
,
1934 .bitmask
= server
->attr_bitmask
,
1936 struct nfs_removeres res
= {
1939 struct rpc_message msg
= {
1940 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
1946 nfs_fattr_init(&res
.dir_attr
);
1947 status
= rpc_call_sync(server
->client
, &msg
, 0);
1949 update_changeattr(dir
, &res
.cinfo
);
1950 nfs_post_op_update_inode(dir
, &res
.dir_attr
);
1955 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1957 struct nfs4_exception exception
= { };
1960 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1961 _nfs4_proc_remove(dir
, name
),
1963 } while (exception
.retry
);
1967 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
1969 struct nfs_server
*server
= NFS_SERVER(dir
);
1970 struct nfs_removeargs
*args
= msg
->rpc_argp
;
1971 struct nfs_removeres
*res
= msg
->rpc_resp
;
1973 args
->bitmask
= server
->attr_bitmask
;
1974 res
->server
= server
;
1975 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
1978 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
1980 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
1982 if (nfs4_async_handle_error(task
, res
->server
) == -EAGAIN
)
1984 update_changeattr(dir
, &res
->cinfo
);
1985 nfs_post_op_update_inode(dir
, &res
->dir_attr
);
1989 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1990 struct inode
*new_dir
, struct qstr
*new_name
)
1992 struct nfs_server
*server
= NFS_SERVER(old_dir
);
1993 struct nfs4_rename_arg arg
= {
1994 .old_dir
= NFS_FH(old_dir
),
1995 .new_dir
= NFS_FH(new_dir
),
1996 .old_name
= old_name
,
1997 .new_name
= new_name
,
1998 .bitmask
= server
->attr_bitmask
,
2000 struct nfs_fattr old_fattr
, new_fattr
;
2001 struct nfs4_rename_res res
= {
2003 .old_fattr
= &old_fattr
,
2004 .new_fattr
= &new_fattr
,
2006 struct rpc_message msg
= {
2007 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2013 nfs_fattr_init(res
.old_fattr
);
2014 nfs_fattr_init(res
.new_fattr
);
2015 status
= rpc_call_sync(server
->client
, &msg
, 0);
2018 update_changeattr(old_dir
, &res
.old_cinfo
);
2019 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2020 update_changeattr(new_dir
, &res
.new_cinfo
);
2021 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2026 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2027 struct inode
*new_dir
, struct qstr
*new_name
)
2029 struct nfs4_exception exception
= { };
2032 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2033 _nfs4_proc_rename(old_dir
, old_name
,
2036 } while (exception
.retry
);
2040 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2042 struct nfs_server
*server
= NFS_SERVER(inode
);
2043 struct nfs4_link_arg arg
= {
2044 .fh
= NFS_FH(inode
),
2045 .dir_fh
= NFS_FH(dir
),
2047 .bitmask
= server
->attr_bitmask
,
2049 struct nfs_fattr fattr
, dir_attr
;
2050 struct nfs4_link_res res
= {
2053 .dir_attr
= &dir_attr
,
2055 struct rpc_message msg
= {
2056 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2062 nfs_fattr_init(res
.fattr
);
2063 nfs_fattr_init(res
.dir_attr
);
2064 status
= rpc_call_sync(server
->client
, &msg
, 0);
2066 update_changeattr(dir
, &res
.cinfo
);
2067 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2068 nfs_post_op_update_inode(inode
, res
.fattr
);
2074 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2076 struct nfs4_exception exception
= { };
2079 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2080 _nfs4_proc_link(inode
, dir
, name
),
2082 } while (exception
.retry
);
2086 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2087 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2089 struct nfs_server
*server
= NFS_SERVER(dir
);
2090 struct nfs_fh fhandle
;
2091 struct nfs_fattr fattr
, dir_fattr
;
2092 struct nfs4_create_arg arg
= {
2093 .dir_fh
= NFS_FH(dir
),
2095 .name
= &dentry
->d_name
,
2098 .bitmask
= server
->attr_bitmask
,
2100 struct nfs4_create_res res
= {
2104 .dir_fattr
= &dir_fattr
,
2106 struct rpc_message msg
= {
2107 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
],
2113 if (len
> NFS4_MAXPATHLEN
)
2114 return -ENAMETOOLONG
;
2116 arg
.u
.symlink
.pages
= &page
;
2117 arg
.u
.symlink
.len
= len
;
2118 nfs_fattr_init(&fattr
);
2119 nfs_fattr_init(&dir_fattr
);
2121 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2123 update_changeattr(dir
, &res
.dir_cinfo
);
2124 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2125 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2130 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2131 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2133 struct nfs4_exception exception
= { };
2136 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2137 _nfs4_proc_symlink(dir
, dentry
, page
,
2140 } while (exception
.retry
);
2144 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2145 struct iattr
*sattr
)
2147 struct nfs_server
*server
= NFS_SERVER(dir
);
2148 struct nfs_fh fhandle
;
2149 struct nfs_fattr fattr
, dir_fattr
;
2150 struct nfs4_create_arg arg
= {
2151 .dir_fh
= NFS_FH(dir
),
2153 .name
= &dentry
->d_name
,
2156 .bitmask
= server
->attr_bitmask
,
2158 struct nfs4_create_res res
= {
2162 .dir_fattr
= &dir_fattr
,
2164 struct rpc_message msg
= {
2165 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2171 nfs_fattr_init(&fattr
);
2172 nfs_fattr_init(&dir_fattr
);
2174 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2176 update_changeattr(dir
, &res
.dir_cinfo
);
2177 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2178 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2183 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2184 struct iattr
*sattr
)
2186 struct nfs4_exception exception
= { };
2189 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2190 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2192 } while (exception
.retry
);
2196 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2197 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2199 struct inode
*dir
= dentry
->d_inode
;
2200 struct nfs4_readdir_arg args
= {
2205 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2207 struct nfs4_readdir_res res
;
2208 struct rpc_message msg
= {
2209 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2216 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__
,
2217 dentry
->d_parent
->d_name
.name
,
2218 dentry
->d_name
.name
,
2219 (unsigned long long)cookie
);
2220 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2221 res
.pgbase
= args
.pgbase
;
2222 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2224 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2226 nfs_invalidate_atime(dir
);
2228 dprintk("%s: returns %d\n", __FUNCTION__
, status
);
2232 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2233 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2235 struct nfs4_exception exception
= { };
2238 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2239 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2242 } while (exception
.retry
);
2246 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2247 struct iattr
*sattr
, dev_t rdev
)
2249 struct nfs_server
*server
= NFS_SERVER(dir
);
2251 struct nfs_fattr fattr
, dir_fattr
;
2252 struct nfs4_create_arg arg
= {
2253 .dir_fh
= NFS_FH(dir
),
2255 .name
= &dentry
->d_name
,
2257 .bitmask
= server
->attr_bitmask
,
2259 struct nfs4_create_res res
= {
2263 .dir_fattr
= &dir_fattr
,
2265 struct rpc_message msg
= {
2266 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2271 int mode
= sattr
->ia_mode
;
2273 nfs_fattr_init(&fattr
);
2274 nfs_fattr_init(&dir_fattr
);
2276 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2277 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2279 arg
.ftype
= NF4FIFO
;
2280 else if (S_ISBLK(mode
)) {
2282 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2283 arg
.u
.device
.specdata2
= MINOR(rdev
);
2285 else if (S_ISCHR(mode
)) {
2287 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2288 arg
.u
.device
.specdata2
= MINOR(rdev
);
2291 arg
.ftype
= NF4SOCK
;
2293 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2295 update_changeattr(dir
, &res
.dir_cinfo
);
2296 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2297 status
= nfs_instantiate(dentry
, &fh
, &fattr
);
2302 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2303 struct iattr
*sattr
, dev_t rdev
)
2305 struct nfs4_exception exception
= { };
2308 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2309 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2311 } while (exception
.retry
);
2315 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2316 struct nfs_fsstat
*fsstat
)
2318 struct nfs4_statfs_arg args
= {
2320 .bitmask
= server
->attr_bitmask
,
2322 struct rpc_message msg
= {
2323 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2328 nfs_fattr_init(fsstat
->fattr
);
2329 return rpc_call_sync(server
->client
, &msg
, 0);
2332 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2334 struct nfs4_exception exception
= { };
2337 err
= nfs4_handle_exception(server
,
2338 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2340 } while (exception
.retry
);
2344 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2345 struct nfs_fsinfo
*fsinfo
)
2347 struct nfs4_fsinfo_arg args
= {
2349 .bitmask
= server
->attr_bitmask
,
2351 struct rpc_message msg
= {
2352 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2357 return rpc_call_sync(server
->client
, &msg
, 0);
2360 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2362 struct nfs4_exception exception
= { };
2366 err
= nfs4_handle_exception(server
,
2367 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2369 } while (exception
.retry
);
2373 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2375 nfs_fattr_init(fsinfo
->fattr
);
2376 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2379 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2380 struct nfs_pathconf
*pathconf
)
2382 struct nfs4_pathconf_arg args
= {
2384 .bitmask
= server
->attr_bitmask
,
2386 struct rpc_message msg
= {
2387 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2389 .rpc_resp
= pathconf
,
2392 /* None of the pathconf attributes are mandatory to implement */
2393 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2394 memset(pathconf
, 0, sizeof(*pathconf
));
2398 nfs_fattr_init(pathconf
->fattr
);
2399 return rpc_call_sync(server
->client
, &msg
, 0);
2402 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2403 struct nfs_pathconf
*pathconf
)
2405 struct nfs4_exception exception
= { };
2409 err
= nfs4_handle_exception(server
,
2410 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2412 } while (exception
.retry
);
2416 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2418 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2420 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
2421 rpc_restart_call(task
);
2425 nfs_invalidate_atime(data
->inode
);
2426 if (task
->tk_status
> 0)
2427 renew_lease(server
, data
->timestamp
);
2431 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
2433 data
->timestamp
= jiffies
;
2434 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
2437 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2439 struct inode
*inode
= data
->inode
;
2441 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2442 rpc_restart_call(task
);
2445 if (task
->tk_status
>= 0) {
2446 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2447 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
2452 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
2454 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2456 data
->args
.bitmask
= server
->attr_bitmask
;
2457 data
->res
.server
= server
;
2458 data
->timestamp
= jiffies
;
2460 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
2463 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2465 struct inode
*inode
= data
->inode
;
2467 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2468 rpc_restart_call(task
);
2471 nfs_refresh_inode(inode
, data
->res
.fattr
);
2475 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
2477 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2479 data
->args
.bitmask
= server
->attr_bitmask
;
2480 data
->res
.server
= server
;
2481 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
2485 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
2486 * standalone procedure for queueing an asynchronous RENEW.
2488 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
2490 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
2491 unsigned long timestamp
= (unsigned long)data
;
2493 if (task
->tk_status
< 0) {
2494 switch (task
->tk_status
) {
2495 case -NFS4ERR_STALE_CLIENTID
:
2496 case -NFS4ERR_EXPIRED
:
2497 case -NFS4ERR_CB_PATH_DOWN
:
2498 nfs4_schedule_state_recovery(clp
);
2502 spin_lock(&clp
->cl_lock
);
2503 if (time_before(clp
->cl_last_renewal
,timestamp
))
2504 clp
->cl_last_renewal
= timestamp
;
2505 spin_unlock(&clp
->cl_lock
);
2508 static const struct rpc_call_ops nfs4_renew_ops
= {
2509 .rpc_call_done
= nfs4_renew_done
,
2512 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2514 struct rpc_message msg
= {
2515 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2520 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
2521 &nfs4_renew_ops
, (void *)jiffies
);
2524 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2526 struct rpc_message msg
= {
2527 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2531 unsigned long now
= jiffies
;
2534 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2537 spin_lock(&clp
->cl_lock
);
2538 if (time_before(clp
->cl_last_renewal
,now
))
2539 clp
->cl_last_renewal
= now
;
2540 spin_unlock(&clp
->cl_lock
);
2544 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
2546 return (server
->caps
& NFS_CAP_ACLS
)
2547 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2548 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
2551 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
2552 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
2555 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
2557 static void buf_to_pages(const void *buf
, size_t buflen
,
2558 struct page
**pages
, unsigned int *pgbase
)
2560 const void *p
= buf
;
2562 *pgbase
= offset_in_page(buf
);
2564 while (p
< buf
+ buflen
) {
2565 *(pages
++) = virt_to_page(p
);
2566 p
+= PAGE_CACHE_SIZE
;
2570 struct nfs4_cached_acl
{
2576 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
2578 struct nfs_inode
*nfsi
= NFS_I(inode
);
2580 spin_lock(&inode
->i_lock
);
2581 kfree(nfsi
->nfs4_acl
);
2582 nfsi
->nfs4_acl
= acl
;
2583 spin_unlock(&inode
->i_lock
);
2586 static void nfs4_zap_acl_attr(struct inode
*inode
)
2588 nfs4_set_cached_acl(inode
, NULL
);
2591 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
2593 struct nfs_inode
*nfsi
= NFS_I(inode
);
2594 struct nfs4_cached_acl
*acl
;
2597 spin_lock(&inode
->i_lock
);
2598 acl
= nfsi
->nfs4_acl
;
2601 if (buf
== NULL
) /* user is just asking for length */
2603 if (acl
->cached
== 0)
2605 ret
= -ERANGE
; /* see getxattr(2) man page */
2606 if (acl
->len
> buflen
)
2608 memcpy(buf
, acl
->data
, acl
->len
);
2612 spin_unlock(&inode
->i_lock
);
2616 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
2618 struct nfs4_cached_acl
*acl
;
2620 if (buf
&& acl_len
<= PAGE_SIZE
) {
2621 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
2625 memcpy(acl
->data
, buf
, acl_len
);
2627 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
2634 nfs4_set_cached_acl(inode
, acl
);
2637 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2639 struct page
*pages
[NFS4ACL_MAXPAGES
];
2640 struct nfs_getaclargs args
= {
2641 .fh
= NFS_FH(inode
),
2645 size_t resp_len
= buflen
;
2647 struct rpc_message msg
= {
2648 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
2650 .rpc_resp
= &resp_len
,
2652 struct page
*localpage
= NULL
;
2655 if (buflen
< PAGE_SIZE
) {
2656 /* As long as we're doing a round trip to the server anyway,
2657 * let's be prepared for a page of acl data. */
2658 localpage
= alloc_page(GFP_KERNEL
);
2659 resp_buf
= page_address(localpage
);
2660 if (localpage
== NULL
)
2662 args
.acl_pages
[0] = localpage
;
2663 args
.acl_pgbase
= 0;
2664 resp_len
= args
.acl_len
= PAGE_SIZE
;
2667 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
2669 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2672 if (resp_len
> args
.acl_len
)
2673 nfs4_write_cached_acl(inode
, NULL
, resp_len
);
2675 nfs4_write_cached_acl(inode
, resp_buf
, resp_len
);
2678 if (resp_len
> buflen
)
2681 memcpy(buf
, resp_buf
, resp_len
);
2686 __free_page(localpage
);
2690 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2692 struct nfs4_exception exception
= { };
2695 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
2698 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
2699 } while (exception
.retry
);
2703 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
2705 struct nfs_server
*server
= NFS_SERVER(inode
);
2708 if (!nfs4_server_supports_acls(server
))
2710 ret
= nfs_revalidate_inode(server
, inode
);
2713 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
2716 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
2719 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2721 struct nfs_server
*server
= NFS_SERVER(inode
);
2722 struct page
*pages
[NFS4ACL_MAXPAGES
];
2723 struct nfs_setaclargs arg
= {
2724 .fh
= NFS_FH(inode
),
2728 struct rpc_message msg
= {
2729 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
2735 if (!nfs4_server_supports_acls(server
))
2737 nfs_inode_return_delegation(inode
);
2738 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
2739 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2740 nfs_zap_caches(inode
);
2744 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2746 struct nfs4_exception exception
= { };
2749 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2750 __nfs4_proc_set_acl(inode
, buf
, buflen
),
2752 } while (exception
.retry
);
2757 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
)
2759 struct nfs_client
*clp
= server
->nfs_client
;
2761 if (!clp
|| task
->tk_status
>= 0)
2763 switch(task
->tk_status
) {
2764 case -NFS4ERR_STALE_CLIENTID
:
2765 case -NFS4ERR_STALE_STATEID
:
2766 case -NFS4ERR_EXPIRED
:
2767 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
, NULL
);
2768 nfs4_schedule_state_recovery(clp
);
2769 if (test_bit(NFS4CLNT_STATE_RECOVER
, &clp
->cl_state
) == 0)
2770 rpc_wake_up_task(task
);
2771 task
->tk_status
= 0;
2773 case -NFS4ERR_DELAY
:
2774 nfs_inc_server_stats((struct nfs_server
*) server
,
2776 case -NFS4ERR_GRACE
:
2777 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
2778 task
->tk_status
= 0;
2780 case -NFS4ERR_OLD_STATEID
:
2781 task
->tk_status
= 0;
2784 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
2788 static int nfs4_wait_bit_interruptible(void *word
)
2790 if (signal_pending(current
))
2791 return -ERESTARTSYS
;
2796 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
)
2803 rwsem_acquire(&clp
->cl_sem
.dep_map
, 0, 0, _RET_IP_
);
2805 rpc_clnt_sigmask(clnt
, &oldset
);
2806 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_STATE_RECOVER
,
2807 nfs4_wait_bit_interruptible
,
2808 TASK_INTERRUPTIBLE
);
2809 rpc_clnt_sigunmask(clnt
, &oldset
);
2811 rwsem_release(&clp
->cl_sem
.dep_map
, 1, _RET_IP_
);
2815 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
2823 *timeout
= NFS4_POLL_RETRY_MIN
;
2824 if (*timeout
> NFS4_POLL_RETRY_MAX
)
2825 *timeout
= NFS4_POLL_RETRY_MAX
;
2826 rpc_clnt_sigmask(clnt
, &oldset
);
2827 if (clnt
->cl_intr
) {
2828 schedule_timeout_interruptible(*timeout
);
2832 schedule_timeout_uninterruptible(*timeout
);
2833 rpc_clnt_sigunmask(clnt
, &oldset
);
2838 /* This is the error handling routine for processes that are allowed
2841 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
2843 struct nfs_client
*clp
= server
->nfs_client
;
2844 int ret
= errorcode
;
2846 exception
->retry
= 0;
2850 case -NFS4ERR_STALE_CLIENTID
:
2851 case -NFS4ERR_STALE_STATEID
:
2852 case -NFS4ERR_EXPIRED
:
2853 nfs4_schedule_state_recovery(clp
);
2854 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
2856 exception
->retry
= 1;
2858 case -NFS4ERR_FILE_OPEN
:
2859 case -NFS4ERR_GRACE
:
2860 case -NFS4ERR_DELAY
:
2861 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
2864 case -NFS4ERR_OLD_STATEID
:
2865 exception
->retry
= 1;
2867 /* We failed to handle the error */
2868 return nfs4_map_errors(ret
);
2871 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
2873 nfs4_verifier sc_verifier
;
2874 struct nfs4_setclientid setclientid
= {
2875 .sc_verifier
= &sc_verifier
,
2878 struct rpc_message msg
= {
2879 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
2880 .rpc_argp
= &setclientid
,
2888 p
= (__be32
*)sc_verifier
.data
;
2889 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
2890 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
2893 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
2894 sizeof(setclientid
.sc_name
), "%s/%u.%u.%u.%u %s %u",
2895 clp
->cl_ipaddr
, NIPQUAD(clp
->cl_addr
.sin_addr
),
2896 cred
->cr_ops
->cr_name
,
2897 clp
->cl_id_uniquifier
);
2898 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
2899 sizeof(setclientid
.sc_netid
), "tcp");
2900 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
2901 sizeof(setclientid
.sc_uaddr
), "%s.%d.%d",
2902 clp
->cl_ipaddr
, port
>> 8, port
& 255);
2904 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2905 if (status
!= -NFS4ERR_CLID_INUSE
)
2910 ssleep(clp
->cl_lease_time
+ 1);
2912 if (++clp
->cl_id_uniquifier
== 0)
2918 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2920 struct nfs_fsinfo fsinfo
;
2921 struct rpc_message msg
= {
2922 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
2924 .rpc_resp
= &fsinfo
,
2931 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2933 spin_lock(&clp
->cl_lock
);
2934 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
2935 clp
->cl_last_renewal
= now
;
2936 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
2937 spin_unlock(&clp
->cl_lock
);
2942 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2947 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
2951 case -NFS4ERR_RESOURCE
:
2952 /* The IBM lawyers misread another document! */
2953 case -NFS4ERR_DELAY
:
2954 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
2960 struct nfs4_delegreturndata
{
2961 struct nfs4_delegreturnargs args
;
2962 struct nfs4_delegreturnres res
;
2964 nfs4_stateid stateid
;
2965 unsigned long timestamp
;
2966 struct nfs_fattr fattr
;
2970 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
2972 struct nfs4_delegreturndata
*data
= calldata
;
2973 data
->rpc_status
= task
->tk_status
;
2974 if (data
->rpc_status
== 0)
2975 renew_lease(data
->res
.server
, data
->timestamp
);
2978 static void nfs4_delegreturn_release(void *calldata
)
2983 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
2984 .rpc_call_done
= nfs4_delegreturn_done
,
2985 .rpc_release
= nfs4_delegreturn_release
,
2988 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2990 struct nfs4_delegreturndata
*data
;
2991 struct nfs_server
*server
= NFS_SERVER(inode
);
2992 struct rpc_task
*task
;
2993 struct rpc_message msg
= {
2994 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
2997 struct rpc_task_setup task_setup_data
= {
2998 .rpc_client
= server
->client
,
2999 .rpc_message
= &msg
,
3000 .callback_ops
= &nfs4_delegreturn_ops
,
3001 .flags
= RPC_TASK_ASYNC
,
3005 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3008 data
->args
.fhandle
= &data
->fh
;
3009 data
->args
.stateid
= &data
->stateid
;
3010 data
->args
.bitmask
= server
->attr_bitmask
;
3011 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3012 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3013 data
->res
.fattr
= &data
->fattr
;
3014 data
->res
.server
= server
;
3015 nfs_fattr_init(data
->res
.fattr
);
3016 data
->timestamp
= jiffies
;
3017 data
->rpc_status
= 0;
3019 task_setup_data
.callback_data
= data
;
3020 msg
.rpc_argp
= &data
->args
,
3021 msg
.rpc_resp
= &data
->res
,
3022 task
= rpc_run_task(&task_setup_data
);
3024 return PTR_ERR(task
);
3025 status
= nfs4_wait_for_completion_rpc_task(task
);
3027 status
= data
->rpc_status
;
3029 nfs_refresh_inode(inode
, &data
->fattr
);
3035 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
3037 struct nfs_server
*server
= NFS_SERVER(inode
);
3038 struct nfs4_exception exception
= { };
3041 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
);
3043 case -NFS4ERR_STALE_STATEID
:
3044 case -NFS4ERR_EXPIRED
:
3048 err
= nfs4_handle_exception(server
, err
, &exception
);
3049 } while (exception
.retry
);
3053 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3054 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3057 * sleep, with exponential backoff, and retry the LOCK operation.
3059 static unsigned long
3060 nfs4_set_lock_task_retry(unsigned long timeout
)
3062 schedule_timeout_interruptible(timeout
);
3064 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3065 return NFS4_LOCK_MAXTIMEOUT
;
3069 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3071 struct inode
*inode
= state
->inode
;
3072 struct nfs_server
*server
= NFS_SERVER(inode
);
3073 struct nfs_client
*clp
= server
->nfs_client
;
3074 struct nfs_lockt_args arg
= {
3075 .fh
= NFS_FH(inode
),
3078 struct nfs_lockt_res res
= {
3081 struct rpc_message msg
= {
3082 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3085 .rpc_cred
= state
->owner
->so_cred
,
3087 struct nfs4_lock_state
*lsp
;
3090 down_read(&clp
->cl_sem
);
3091 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3092 status
= nfs4_set_lock_state(state
, request
);
3095 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3096 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3097 status
= rpc_call_sync(server
->client
, &msg
, 0);
3100 request
->fl_type
= F_UNLCK
;
3102 case -NFS4ERR_DENIED
:
3105 request
->fl_ops
->fl_release_private(request
);
3107 up_read(&clp
->cl_sem
);
3111 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3113 struct nfs4_exception exception
= { };
3117 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3118 _nfs4_proc_getlk(state
, cmd
, request
),
3120 } while (exception
.retry
);
3124 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3127 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3129 res
= posix_lock_file_wait(file
, fl
);
3132 res
= flock_lock_file_wait(file
, fl
);
3140 struct nfs4_unlockdata
{
3141 struct nfs_locku_args arg
;
3142 struct nfs_locku_res res
;
3143 struct nfs4_lock_state
*lsp
;
3144 struct nfs_open_context
*ctx
;
3145 struct file_lock fl
;
3146 const struct nfs_server
*server
;
3147 unsigned long timestamp
;
3150 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3151 struct nfs_open_context
*ctx
,
3152 struct nfs4_lock_state
*lsp
,
3153 struct nfs_seqid
*seqid
)
3155 struct nfs4_unlockdata
*p
;
3156 struct inode
*inode
= lsp
->ls_state
->inode
;
3158 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
3161 p
->arg
.fh
= NFS_FH(inode
);
3163 p
->arg
.seqid
= seqid
;
3164 p
->arg
.stateid
= &lsp
->ls_stateid
;
3166 atomic_inc(&lsp
->ls_count
);
3167 /* Ensure we don't close file until we're done freeing locks! */
3168 p
->ctx
= get_nfs_open_context(ctx
);
3169 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3170 p
->server
= NFS_SERVER(inode
);
3174 static void nfs4_locku_release_calldata(void *data
)
3176 struct nfs4_unlockdata
*calldata
= data
;
3177 nfs_free_seqid(calldata
->arg
.seqid
);
3178 nfs4_put_lock_state(calldata
->lsp
);
3179 put_nfs_open_context(calldata
->ctx
);
3183 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3185 struct nfs4_unlockdata
*calldata
= data
;
3187 if (RPC_ASSASSINATED(task
))
3189 nfs_increment_lock_seqid(task
->tk_status
, calldata
->arg
.seqid
);
3190 switch (task
->tk_status
) {
3192 memcpy(calldata
->lsp
->ls_stateid
.data
,
3193 calldata
->res
.stateid
.data
,
3194 sizeof(calldata
->lsp
->ls_stateid
.data
));
3195 renew_lease(calldata
->server
, calldata
->timestamp
);
3197 case -NFS4ERR_STALE_STATEID
:
3198 case -NFS4ERR_EXPIRED
:
3201 if (nfs4_async_handle_error(task
, calldata
->server
) == -EAGAIN
)
3202 rpc_restart_call(task
);
3206 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3208 struct nfs4_unlockdata
*calldata
= data
;
3210 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3212 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3213 /* Note: exit _without_ running nfs4_locku_done */
3214 task
->tk_action
= NULL
;
3217 calldata
->timestamp
= jiffies
;
3218 rpc_call_start(task
);
3221 static const struct rpc_call_ops nfs4_locku_ops
= {
3222 .rpc_call_prepare
= nfs4_locku_prepare
,
3223 .rpc_call_done
= nfs4_locku_done
,
3224 .rpc_release
= nfs4_locku_release_calldata
,
3227 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3228 struct nfs_open_context
*ctx
,
3229 struct nfs4_lock_state
*lsp
,
3230 struct nfs_seqid
*seqid
)
3232 struct nfs4_unlockdata
*data
;
3233 struct rpc_message msg
= {
3234 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3235 .rpc_cred
= ctx
->cred
,
3237 struct rpc_task_setup task_setup_data
= {
3238 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
3239 .rpc_message
= &msg
,
3240 .callback_ops
= &nfs4_locku_ops
,
3241 .flags
= RPC_TASK_ASYNC
,
3244 /* Ensure this is an unlock - when canceling a lock, the
3245 * canceled lock is passed in, and it won't be an unlock.
3247 fl
->fl_type
= F_UNLCK
;
3249 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3251 nfs_free_seqid(seqid
);
3252 return ERR_PTR(-ENOMEM
);
3255 msg
.rpc_argp
= &data
->arg
,
3256 msg
.rpc_resp
= &data
->res
,
3257 task_setup_data
.callback_data
= data
;
3258 return rpc_run_task(&task_setup_data
);
3261 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3263 struct nfs_seqid
*seqid
;
3264 struct nfs4_lock_state
*lsp
;
3265 struct rpc_task
*task
;
3268 status
= nfs4_set_lock_state(state
, request
);
3269 /* Unlock _before_ we do the RPC call */
3270 request
->fl_flags
|= FL_EXISTS
;
3271 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
)
3275 /* Is this a delegated lock? */
3276 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3278 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3279 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3283 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
3284 status
= PTR_ERR(task
);
3287 status
= nfs4_wait_for_completion_rpc_task(task
);
3293 struct nfs4_lockdata
{
3294 struct nfs_lock_args arg
;
3295 struct nfs_lock_res res
;
3296 struct nfs4_lock_state
*lsp
;
3297 struct nfs_open_context
*ctx
;
3298 struct file_lock fl
;
3299 unsigned long timestamp
;
3304 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3305 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3307 struct nfs4_lockdata
*p
;
3308 struct inode
*inode
= lsp
->ls_state
->inode
;
3309 struct nfs_server
*server
= NFS_SERVER(inode
);
3311 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3315 p
->arg
.fh
= NFS_FH(inode
);
3317 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
);
3318 if (p
->arg
.open_seqid
== NULL
)
3320 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3321 if (p
->arg
.lock_seqid
== NULL
)
3322 goto out_free_seqid
;
3323 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3324 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3325 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3327 atomic_inc(&lsp
->ls_count
);
3328 p
->ctx
= get_nfs_open_context(ctx
);
3329 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3332 nfs_free_seqid(p
->arg
.open_seqid
);
3338 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3340 struct nfs4_lockdata
*data
= calldata
;
3341 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3343 dprintk("%s: begin!\n", __FUNCTION__
);
3344 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3346 /* Do we need to do an open_to_lock_owner? */
3347 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3348 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
3350 data
->arg
.open_stateid
= &state
->stateid
;
3351 data
->arg
.new_lock_owner
= 1;
3353 data
->arg
.new_lock_owner
= 0;
3354 data
->timestamp
= jiffies
;
3355 rpc_call_start(task
);
3356 dprintk("%s: done!, ret = %d\n", __FUNCTION__
, data
->rpc_status
);
3359 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3361 struct nfs4_lockdata
*data
= calldata
;
3363 dprintk("%s: begin!\n", __FUNCTION__
);
3365 data
->rpc_status
= task
->tk_status
;
3366 if (RPC_ASSASSINATED(task
))
3368 if (data
->arg
.new_lock_owner
!= 0) {
3369 nfs_increment_open_seqid(data
->rpc_status
, data
->arg
.open_seqid
);
3370 if (data
->rpc_status
== 0)
3371 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3375 if (data
->rpc_status
== 0) {
3376 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3377 sizeof(data
->lsp
->ls_stateid
.data
));
3378 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3379 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3381 nfs_increment_lock_seqid(data
->rpc_status
, data
->arg
.lock_seqid
);
3383 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, data
->rpc_status
);
3386 static void nfs4_lock_release(void *calldata
)
3388 struct nfs4_lockdata
*data
= calldata
;
3390 dprintk("%s: begin!\n", __FUNCTION__
);
3391 nfs_free_seqid(data
->arg
.open_seqid
);
3392 if (data
->cancelled
!= 0) {
3393 struct rpc_task
*task
;
3394 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3395 data
->arg
.lock_seqid
);
3398 dprintk("%s: cancelling lock!\n", __FUNCTION__
);
3400 nfs_free_seqid(data
->arg
.lock_seqid
);
3401 nfs4_put_lock_state(data
->lsp
);
3402 put_nfs_open_context(data
->ctx
);
3404 dprintk("%s: done!\n", __FUNCTION__
);
3407 static const struct rpc_call_ops nfs4_lock_ops
= {
3408 .rpc_call_prepare
= nfs4_lock_prepare
,
3409 .rpc_call_done
= nfs4_lock_done
,
3410 .rpc_release
= nfs4_lock_release
,
3413 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3415 struct nfs4_lockdata
*data
;
3416 struct rpc_task
*task
;
3417 struct rpc_message msg
= {
3418 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3419 .rpc_cred
= state
->owner
->so_cred
,
3421 struct rpc_task_setup task_setup_data
= {
3422 .rpc_client
= NFS_CLIENT(state
->inode
),
3423 .rpc_message
= &msg
,
3424 .callback_ops
= &nfs4_lock_ops
,
3425 .flags
= RPC_TASK_ASYNC
,
3429 dprintk("%s: begin!\n", __FUNCTION__
);
3430 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
3431 fl
->fl_u
.nfs4_fl
.owner
);
3435 data
->arg
.block
= 1;
3437 data
->arg
.reclaim
= 1;
3438 msg
.rpc_argp
= &data
->arg
,
3439 msg
.rpc_resp
= &data
->res
,
3440 task_setup_data
.callback_data
= data
;
3441 task
= rpc_run_task(&task_setup_data
);
3443 return PTR_ERR(task
);
3444 ret
= nfs4_wait_for_completion_rpc_task(task
);
3446 ret
= data
->rpc_status
;
3447 if (ret
== -NFS4ERR_DENIED
)
3450 data
->cancelled
= 1;
3452 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, ret
);
3456 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
3458 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3459 struct nfs4_exception exception
= { };
3463 /* Cache the lock if possible... */
3464 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3466 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
3467 if (err
!= -NFS4ERR_DELAY
)
3469 nfs4_handle_exception(server
, err
, &exception
);
3470 } while (exception
.retry
);
3474 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
3476 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3477 struct nfs4_exception exception
= { };
3480 err
= nfs4_set_lock_state(state
, request
);
3484 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3486 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
3487 if (err
!= -NFS4ERR_DELAY
)
3489 nfs4_handle_exception(server
, err
, &exception
);
3490 } while (exception
.retry
);
3494 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3496 struct nfs_client
*clp
= state
->owner
->so_client
;
3497 unsigned char fl_flags
= request
->fl_flags
;
3500 /* Is this a delegated open? */
3501 status
= nfs4_set_lock_state(state
, request
);
3504 request
->fl_flags
|= FL_ACCESS
;
3505 status
= do_vfs_lock(request
->fl_file
, request
);
3508 down_read(&clp
->cl_sem
);
3509 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3510 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3511 /* Yes: cache locks! */
3512 down_read(&nfsi
->rwsem
);
3513 /* ...but avoid races with delegation recall... */
3514 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3515 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
3516 status
= do_vfs_lock(request
->fl_file
, request
);
3517 up_read(&nfsi
->rwsem
);
3520 up_read(&nfsi
->rwsem
);
3522 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
3525 /* Note: we always want to sleep here! */
3526 request
->fl_flags
= fl_flags
| FL_SLEEP
;
3527 if (do_vfs_lock(request
->fl_file
, request
) < 0)
3528 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __FUNCTION__
);
3530 up_read(&clp
->cl_sem
);
3532 request
->fl_flags
= fl_flags
;
3536 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3538 struct nfs4_exception exception
= { };
3542 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3543 _nfs4_proc_setlk(state
, cmd
, request
),
3545 } while (exception
.retry
);
3550 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
3552 struct nfs_open_context
*ctx
;
3553 struct nfs4_state
*state
;
3554 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
3557 /* verify open state */
3558 ctx
= nfs_file_open_context(filp
);
3561 if (request
->fl_start
< 0 || request
->fl_end
< 0)
3565 return nfs4_proc_getlk(state
, F_GETLK
, request
);
3567 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
3570 if (request
->fl_type
== F_UNLCK
)
3571 return nfs4_proc_unlck(state
, cmd
, request
);
3574 status
= nfs4_proc_setlk(state
, cmd
, request
);
3575 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
3577 timeout
= nfs4_set_lock_task_retry(timeout
);
3578 status
= -ERESTARTSYS
;
3581 } while(status
< 0);
3585 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
3587 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3588 struct nfs4_exception exception
= { };
3591 err
= nfs4_set_lock_state(state
, fl
);
3595 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
3596 if (err
!= -NFS4ERR_DELAY
)
3598 err
= nfs4_handle_exception(server
, err
, &exception
);
3599 } while (exception
.retry
);
3604 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
3606 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
3607 size_t buflen
, int flags
)
3609 struct inode
*inode
= dentry
->d_inode
;
3611 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3614 if (!S_ISREG(inode
->i_mode
) &&
3615 (!S_ISDIR(inode
->i_mode
) || inode
->i_mode
& S_ISVTX
))
3618 return nfs4_proc_set_acl(inode
, buf
, buflen
);
3621 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
3622 * and that's what we'll do for e.g. user attributes that haven't been set.
3623 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
3624 * attributes in kernel-managed attribute namespaces. */
3625 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
3628 struct inode
*inode
= dentry
->d_inode
;
3630 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3633 return nfs4_proc_get_acl(inode
, buf
, buflen
);
3636 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
3638 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
3640 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
3642 if (buf
&& buflen
< len
)
3645 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
3649 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
3650 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
3652 struct nfs_server
*server
= NFS_SERVER(dir
);
3654 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
3655 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
3657 struct nfs4_fs_locations_arg args
= {
3658 .dir_fh
= NFS_FH(dir
),
3663 struct rpc_message msg
= {
3664 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
3666 .rpc_resp
= fs_locations
,
3670 dprintk("%s: start\n", __FUNCTION__
);
3671 nfs_fattr_init(&fs_locations
->fattr
);
3672 fs_locations
->server
= server
;
3673 fs_locations
->nlocations
= 0;
3674 status
= rpc_call_sync(server
->client
, &msg
, 0);
3675 dprintk("%s: returned status = %d\n", __FUNCTION__
, status
);
3679 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops
= {
3680 .recover_open
= nfs4_open_reclaim
,
3681 .recover_lock
= nfs4_lock_reclaim
,
3684 struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops
= {
3685 .recover_open
= nfs4_open_expired
,
3686 .recover_lock
= nfs4_lock_expired
,
3689 static const struct inode_operations nfs4_file_inode_operations
= {
3690 .permission
= nfs_permission
,
3691 .getattr
= nfs_getattr
,
3692 .setattr
= nfs_setattr
,
3693 .getxattr
= nfs4_getxattr
,
3694 .setxattr
= nfs4_setxattr
,
3695 .listxattr
= nfs4_listxattr
,
3698 const struct nfs_rpc_ops nfs_v4_clientops
= {
3699 .version
= 4, /* protocol version */
3700 .dentry_ops
= &nfs4_dentry_operations
,
3701 .dir_inode_ops
= &nfs4_dir_inode_operations
,
3702 .file_inode_ops
= &nfs4_file_inode_operations
,
3703 .getroot
= nfs4_proc_get_root
,
3704 .getattr
= nfs4_proc_getattr
,
3705 .setattr
= nfs4_proc_setattr
,
3706 .lookupfh
= nfs4_proc_lookupfh
,
3707 .lookup
= nfs4_proc_lookup
,
3708 .access
= nfs4_proc_access
,
3709 .readlink
= nfs4_proc_readlink
,
3710 .create
= nfs4_proc_create
,
3711 .remove
= nfs4_proc_remove
,
3712 .unlink_setup
= nfs4_proc_unlink_setup
,
3713 .unlink_done
= nfs4_proc_unlink_done
,
3714 .rename
= nfs4_proc_rename
,
3715 .link
= nfs4_proc_link
,
3716 .symlink
= nfs4_proc_symlink
,
3717 .mkdir
= nfs4_proc_mkdir
,
3718 .rmdir
= nfs4_proc_remove
,
3719 .readdir
= nfs4_proc_readdir
,
3720 .mknod
= nfs4_proc_mknod
,
3721 .statfs
= nfs4_proc_statfs
,
3722 .fsinfo
= nfs4_proc_fsinfo
,
3723 .pathconf
= nfs4_proc_pathconf
,
3724 .set_capabilities
= nfs4_server_capabilities
,
3725 .decode_dirent
= nfs4_decode_dirent
,
3726 .read_setup
= nfs4_proc_read_setup
,
3727 .read_done
= nfs4_read_done
,
3728 .write_setup
= nfs4_proc_write_setup
,
3729 .write_done
= nfs4_write_done
,
3730 .commit_setup
= nfs4_proc_commit_setup
,
3731 .commit_done
= nfs4_commit_done
,
3732 .file_open
= nfs_open
,
3733 .file_release
= nfs_release
,
3734 .lock
= nfs4_proc_lock
,
3735 .clear_acl_cache
= nfs4_zap_acl_attr
,