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 nfsi
->cache_change_attribute
= jiffies
;
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_prepare(struct rpc_task
*task
, void *calldata
)
723 struct nfs4_opendata
*data
= calldata
;
724 struct rpc_message msg
= {
725 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
726 .rpc_argp
= &data
->c_arg
,
727 .rpc_resp
= &data
->c_res
,
728 .rpc_cred
= data
->owner
->so_cred
,
730 data
->timestamp
= jiffies
;
731 rpc_call_setup(task
, &msg
, 0);
734 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
736 struct nfs4_opendata
*data
= calldata
;
738 data
->rpc_status
= task
->tk_status
;
739 if (RPC_ASSASSINATED(task
))
741 if (data
->rpc_status
== 0) {
742 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
743 sizeof(data
->o_res
.stateid
.data
));
744 renew_lease(data
->o_res
.server
, data
->timestamp
);
747 nfs_confirm_seqid(&data
->owner
->so_seqid
, data
->rpc_status
);
748 nfs_increment_open_seqid(data
->rpc_status
, data
->c_arg
.seqid
);
751 static void nfs4_open_confirm_release(void *calldata
)
753 struct nfs4_opendata
*data
= calldata
;
754 struct nfs4_state
*state
= NULL
;
756 /* If this request hasn't been cancelled, do nothing */
757 if (data
->cancelled
== 0)
759 /* In case of error, no cleanup! */
762 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
763 state
= nfs4_opendata_to_nfs4_state(data
);
765 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
767 nfs4_opendata_put(data
);
770 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
771 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
772 .rpc_call_done
= nfs4_open_confirm_done
,
773 .rpc_release
= nfs4_open_confirm_release
,
777 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
779 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
781 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
782 struct rpc_task
*task
;
785 kref_get(&data
->kref
);
787 data
->rpc_status
= 0;
788 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_confirm_ops
, data
);
790 return PTR_ERR(task
);
791 status
= nfs4_wait_for_completion_rpc_task(task
);
796 status
= data
->rpc_status
;
801 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
803 struct nfs4_opendata
*data
= calldata
;
804 struct nfs4_state_owner
*sp
= data
->owner
;
805 struct rpc_message msg
= {
806 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
807 .rpc_argp
= &data
->o_arg
,
808 .rpc_resp
= &data
->o_res
,
809 .rpc_cred
= sp
->so_cred
,
812 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
815 * Check if we still need to send an OPEN call, or if we can use
816 * a delegation instead.
818 if (data
->state
!= NULL
) {
819 struct nfs_delegation
*delegation
;
821 if (can_open_cached(data
->state
, data
->o_arg
.open_flags
& (FMODE_READ
|FMODE_WRITE
|O_EXCL
)))
824 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
825 if (delegation
!= NULL
&&
826 (delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
) == 0) {
832 /* Update sequence id. */
833 data
->o_arg
.id
= sp
->so_owner_id
.id
;
834 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
835 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
836 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
837 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
839 data
->timestamp
= jiffies
;
840 rpc_call_setup(task
, &msg
, 0);
843 task
->tk_action
= NULL
;
847 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
849 struct nfs4_opendata
*data
= calldata
;
851 data
->rpc_status
= task
->tk_status
;
852 if (RPC_ASSASSINATED(task
))
854 if (task
->tk_status
== 0) {
855 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
859 data
->rpc_status
= -ELOOP
;
862 data
->rpc_status
= -EISDIR
;
865 data
->rpc_status
= -ENOTDIR
;
867 renew_lease(data
->o_res
.server
, data
->timestamp
);
868 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
869 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
871 nfs_increment_open_seqid(data
->rpc_status
, data
->o_arg
.seqid
);
875 static void nfs4_open_release(void *calldata
)
877 struct nfs4_opendata
*data
= calldata
;
878 struct nfs4_state
*state
= NULL
;
880 /* If this request hasn't been cancelled, do nothing */
881 if (data
->cancelled
== 0)
883 /* In case of error, no cleanup! */
884 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
886 /* In case we need an open_confirm, no cleanup! */
887 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
889 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
890 state
= nfs4_opendata_to_nfs4_state(data
);
892 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
894 nfs4_opendata_put(data
);
897 static const struct rpc_call_ops nfs4_open_ops
= {
898 .rpc_call_prepare
= nfs4_open_prepare
,
899 .rpc_call_done
= nfs4_open_done
,
900 .rpc_release
= nfs4_open_release
,
904 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
906 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
908 struct inode
*dir
= data
->dir
->d_inode
;
909 struct nfs_server
*server
= NFS_SERVER(dir
);
910 struct nfs_openargs
*o_arg
= &data
->o_arg
;
911 struct nfs_openres
*o_res
= &data
->o_res
;
912 struct rpc_task
*task
;
915 kref_get(&data
->kref
);
917 data
->rpc_status
= 0;
919 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_ops
, data
);
921 return PTR_ERR(task
);
922 status
= nfs4_wait_for_completion_rpc_task(task
);
927 status
= data
->rpc_status
;
929 if (status
!= 0 || !data
->rpc_done
)
932 if (o_res
->fh
.size
== 0)
933 _nfs4_proc_lookup(dir
, o_arg
->name
, &o_res
->fh
, o_res
->f_attr
);
935 if (o_arg
->open_flags
& O_CREAT
) {
936 update_changeattr(dir
, &o_res
->cinfo
);
937 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
939 nfs_refresh_inode(dir
, o_res
->dir_attr
);
940 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
941 status
= _nfs4_proc_open_confirm(data
);
945 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
946 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
950 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
952 struct nfs_client
*clp
= server
->nfs_client
;
956 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
959 if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
))
961 nfs4_schedule_state_recovery(clp
);
968 * reclaim state on the server after a network partition.
969 * Assumes caller holds the appropriate lock
971 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
973 struct nfs4_opendata
*opendata
;
976 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
977 if (IS_ERR(opendata
))
978 return PTR_ERR(opendata
);
979 ret
= nfs4_open_recover(opendata
, state
);
980 if (ret
== -ESTALE
) {
981 /* Invalidate the state owner so we don't ever use it again */
982 nfs4_drop_state_owner(state
->owner
);
983 d_drop(ctx
->path
.dentry
);
985 nfs4_opendata_put(opendata
);
989 static inline int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
991 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
992 struct nfs4_exception exception
= { };
996 err
= _nfs4_open_expired(ctx
, state
);
997 if (err
== -NFS4ERR_DELAY
)
998 nfs4_handle_exception(server
, err
, &exception
);
999 } while (exception
.retry
);
1003 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1005 struct nfs_open_context
*ctx
;
1008 ctx
= nfs4_state_find_open_context(state
);
1010 return PTR_ERR(ctx
);
1011 ret
= nfs4_do_open_expired(ctx
, state
);
1012 put_nfs_open_context(ctx
);
1017 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1018 * fields corresponding to attributes that were used to store the verifier.
1019 * Make sure we clobber those fields in the later setattr call
1021 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1023 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1024 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1025 sattr
->ia_valid
|= ATTR_ATIME
;
1027 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1028 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1029 sattr
->ia_valid
|= ATTR_MTIME
;
1033 * Returns a referenced nfs4_state
1035 static int _nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
1037 struct nfs4_state_owner
*sp
;
1038 struct nfs4_state
*state
= NULL
;
1039 struct nfs_server
*server
= NFS_SERVER(dir
);
1040 struct nfs_client
*clp
= server
->nfs_client
;
1041 struct nfs4_opendata
*opendata
;
1044 /* Protect against reboot recovery conflicts */
1046 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1047 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1050 status
= nfs4_recover_expired_lease(server
);
1052 goto err_put_state_owner
;
1053 if (path
->dentry
->d_inode
!= NULL
)
1054 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, flags
& (FMODE_READ
|FMODE_WRITE
));
1055 down_read(&clp
->cl_sem
);
1057 opendata
= nfs4_opendata_alloc(path
, sp
, flags
, sattr
);
1058 if (opendata
== NULL
)
1059 goto err_release_rwsem
;
1061 if (path
->dentry
->d_inode
!= NULL
)
1062 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1064 status
= _nfs4_proc_open(opendata
);
1066 goto err_opendata_put
;
1068 if (opendata
->o_arg
.open_flags
& O_EXCL
)
1069 nfs4_exclusive_attrset(opendata
, sattr
);
1071 state
= nfs4_opendata_to_nfs4_state(opendata
);
1072 status
= PTR_ERR(state
);
1074 goto err_opendata_put
;
1075 nfs4_opendata_put(opendata
);
1076 nfs4_put_state_owner(sp
);
1077 up_read(&clp
->cl_sem
);
1081 nfs4_opendata_put(opendata
);
1083 up_read(&clp
->cl_sem
);
1084 err_put_state_owner
:
1085 nfs4_put_state_owner(sp
);
1092 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1094 struct nfs4_exception exception
= { };
1095 struct nfs4_state
*res
;
1099 status
= _nfs4_do_open(dir
, path
, flags
, sattr
, cred
, &res
);
1102 /* NOTE: BAD_SEQID means the server and client disagree about the
1103 * book-keeping w.r.t. state-changing operations
1104 * (OPEN/CLOSE/LOCK/LOCKU...)
1105 * It is actually a sign of a bug on the client or on the server.
1107 * If we receive a BAD_SEQID error in the particular case of
1108 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1109 * have unhashed the old state_owner for us, and that we can
1110 * therefore safely retry using a new one. We should still warn
1111 * the user though...
1113 if (status
== -NFS4ERR_BAD_SEQID
) {
1114 printk(KERN_WARNING
"NFS: v4 server %s "
1115 " returned a bad sequence-id error!\n",
1116 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1117 exception
.retry
= 1;
1121 * BAD_STATEID on OPEN means that the server cancelled our
1122 * state before it received the OPEN_CONFIRM.
1123 * Recover by retrying the request as per the discussion
1124 * on Page 181 of RFC3530.
1126 if (status
== -NFS4ERR_BAD_STATEID
) {
1127 exception
.retry
= 1;
1130 if (status
== -EAGAIN
) {
1131 /* We must have found a delegation */
1132 exception
.retry
= 1;
1135 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1136 status
, &exception
));
1137 } while (exception
.retry
);
1141 static int _nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1142 struct iattr
*sattr
, struct nfs4_state
*state
)
1144 struct nfs_server
*server
= NFS_SERVER(inode
);
1145 struct nfs_setattrargs arg
= {
1146 .fh
= NFS_FH(inode
),
1149 .bitmask
= server
->attr_bitmask
,
1151 struct nfs_setattrres res
= {
1155 struct rpc_message msg
= {
1156 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1160 unsigned long timestamp
= jiffies
;
1163 nfs_fattr_init(fattr
);
1165 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1166 /* Use that stateid */
1167 } else if (state
!= NULL
) {
1168 msg
.rpc_cred
= state
->owner
->so_cred
;
1169 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1171 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1173 status
= rpc_call_sync(server
->client
, &msg
, 0);
1174 if (status
== 0 && state
!= NULL
)
1175 renew_lease(server
, timestamp
);
1179 static int nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1180 struct iattr
*sattr
, struct nfs4_state
*state
)
1182 struct nfs_server
*server
= NFS_SERVER(inode
);
1183 struct nfs4_exception exception
= { };
1186 err
= nfs4_handle_exception(server
,
1187 _nfs4_do_setattr(inode
, fattr
, sattr
, state
),
1189 } while (exception
.retry
);
1193 struct nfs4_closedata
{
1195 struct inode
*inode
;
1196 struct nfs4_state
*state
;
1197 struct nfs_closeargs arg
;
1198 struct nfs_closeres res
;
1199 struct nfs_fattr fattr
;
1200 unsigned long timestamp
;
1203 static void nfs4_free_closedata(void *data
)
1205 struct nfs4_closedata
*calldata
= data
;
1206 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1208 nfs4_put_open_state(calldata
->state
);
1209 nfs_free_seqid(calldata
->arg
.seqid
);
1210 nfs4_put_state_owner(sp
);
1211 dput(calldata
->path
.dentry
);
1212 mntput(calldata
->path
.mnt
);
1216 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1218 struct nfs4_closedata
*calldata
= data
;
1219 struct nfs4_state
*state
= calldata
->state
;
1220 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1222 if (RPC_ASSASSINATED(task
))
1224 /* hmm. we are done with the inode, and in the process of freeing
1225 * the state_owner. we keep this around to process errors
1227 nfs_increment_open_seqid(task
->tk_status
, calldata
->arg
.seqid
);
1228 switch (task
->tk_status
) {
1230 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1231 renew_lease(server
, calldata
->timestamp
);
1233 case -NFS4ERR_STALE_STATEID
:
1234 case -NFS4ERR_EXPIRED
:
1237 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
1238 rpc_restart_call(task
);
1242 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1245 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1247 struct nfs4_closedata
*calldata
= data
;
1248 struct nfs4_state
*state
= calldata
->state
;
1249 struct rpc_message msg
= {
1250 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1251 .rpc_argp
= &calldata
->arg
,
1252 .rpc_resp
= &calldata
->res
,
1253 .rpc_cred
= state
->owner
->so_cred
,
1255 int clear_rd
, clear_wr
, clear_rdwr
;
1257 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1260 clear_rd
= clear_wr
= clear_rdwr
= 0;
1261 spin_lock(&state
->owner
->so_lock
);
1262 /* Calculate the change in open mode */
1263 if (state
->n_rdwr
== 0) {
1264 if (state
->n_rdonly
== 0) {
1265 clear_rd
|= test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1266 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1268 if (state
->n_wronly
== 0) {
1269 clear_wr
|= test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1270 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1273 spin_unlock(&state
->owner
->so_lock
);
1274 if (!clear_rd
&& !clear_wr
&& !clear_rdwr
) {
1275 /* Note: exit _without_ calling nfs4_close_done */
1276 task
->tk_action
= NULL
;
1279 nfs_fattr_init(calldata
->res
.fattr
);
1280 if (test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0) {
1281 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1282 calldata
->arg
.open_flags
= FMODE_READ
;
1283 } else if (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0) {
1284 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1285 calldata
->arg
.open_flags
= FMODE_WRITE
;
1287 calldata
->timestamp
= jiffies
;
1288 rpc_call_setup(task
, &msg
, 0);
1291 static const struct rpc_call_ops nfs4_close_ops
= {
1292 .rpc_call_prepare
= nfs4_close_prepare
,
1293 .rpc_call_done
= nfs4_close_done
,
1294 .rpc_release
= nfs4_free_closedata
,
1298 * It is possible for data to be read/written from a mem-mapped file
1299 * after the sys_close call (which hits the vfs layer as a flush).
1300 * This means that we can't safely call nfsv4 close on a file until
1301 * the inode is cleared. This in turn means that we are not good
1302 * NFSv4 citizens - we do not indicate to the server to update the file's
1303 * share state even when we are done with one of the three share
1304 * stateid's in the inode.
1306 * NOTE: Caller must be holding the sp->so_owner semaphore!
1308 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
)
1310 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1311 struct nfs4_closedata
*calldata
;
1312 struct nfs4_state_owner
*sp
= state
->owner
;
1313 struct rpc_task
*task
;
1314 int status
= -ENOMEM
;
1316 calldata
= kmalloc(sizeof(*calldata
), GFP_KERNEL
);
1317 if (calldata
== NULL
)
1319 calldata
->inode
= state
->inode
;
1320 calldata
->state
= state
;
1321 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1322 calldata
->arg
.stateid
= &state
->open_stateid
;
1323 /* Serialization for the sequence id */
1324 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1325 if (calldata
->arg
.seqid
== NULL
)
1326 goto out_free_calldata
;
1327 calldata
->arg
.bitmask
= server
->attr_bitmask
;
1328 calldata
->res
.fattr
= &calldata
->fattr
;
1329 calldata
->res
.server
= server
;
1330 calldata
->path
.mnt
= mntget(path
->mnt
);
1331 calldata
->path
.dentry
= dget(path
->dentry
);
1333 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_close_ops
, calldata
);
1335 return PTR_ERR(task
);
1341 nfs4_put_open_state(state
);
1342 nfs4_put_state_owner(sp
);
1346 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
)
1351 /* If the open_intent is for execute, we have an extra check to make */
1352 if (nd
->intent
.open
.flags
& FMODE_EXEC
) {
1353 ret
= nfs_may_open(state
->inode
,
1354 state
->owner
->so_cred
,
1355 nd
->intent
.open
.flags
);
1359 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1360 if (!IS_ERR(filp
)) {
1361 struct nfs_open_context
*ctx
;
1362 ctx
= nfs_file_open_context(filp
);
1366 ret
= PTR_ERR(filp
);
1368 nfs4_close_state(path
, state
, nd
->intent
.open
.flags
);
1373 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1375 struct dentry
*parent
;
1376 struct path path
= {
1381 struct rpc_cred
*cred
;
1382 struct nfs4_state
*state
;
1385 if (nd
->flags
& LOOKUP_CREATE
) {
1386 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1387 attr
.ia_valid
= ATTR_MODE
;
1388 if (!IS_POSIXACL(dir
))
1389 attr
.ia_mode
&= ~current
->fs
->umask
;
1392 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1395 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1397 return (struct dentry
*)cred
;
1398 parent
= dentry
->d_parent
;
1399 /* Protect against concurrent sillydeletes */
1400 nfs_block_sillyrename(parent
);
1401 state
= nfs4_do_open(dir
, &path
, nd
->intent
.open
.flags
, &attr
, cred
);
1403 if (IS_ERR(state
)) {
1404 if (PTR_ERR(state
) == -ENOENT
) {
1405 d_add(dentry
, NULL
);
1406 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1408 nfs_unblock_sillyrename(parent
);
1409 return (struct dentry
*)state
;
1411 res
= d_add_unique(dentry
, igrab(state
->inode
));
1414 nfs_set_verifier(path
.dentry
, nfs_save_change_attribute(dir
));
1415 nfs_unblock_sillyrename(parent
);
1416 nfs4_intent_set_file(nd
, &path
, state
);
1421 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1423 struct path path
= {
1427 struct rpc_cred
*cred
;
1428 struct nfs4_state
*state
;
1430 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1432 return PTR_ERR(cred
);
1433 state
= nfs4_do_open(dir
, &path
, openflags
, NULL
, cred
);
1435 if (IS_ERR(state
)) {
1436 switch (PTR_ERR(state
)) {
1442 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1448 if (state
->inode
== dentry
->d_inode
) {
1449 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1450 nfs4_intent_set_file(nd
, &path
, state
);
1453 nfs4_close_state(&path
, state
, openflags
);
1460 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1462 struct nfs4_server_caps_res res
= {};
1463 struct rpc_message msg
= {
1464 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1465 .rpc_argp
= fhandle
,
1470 status
= rpc_call_sync(server
->client
, &msg
, 0);
1472 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
1473 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
1474 server
->caps
|= NFS_CAP_ACLS
;
1475 if (res
.has_links
!= 0)
1476 server
->caps
|= NFS_CAP_HARDLINKS
;
1477 if (res
.has_symlinks
!= 0)
1478 server
->caps
|= NFS_CAP_SYMLINKS
;
1479 server
->acl_bitmask
= res
.acl_bitmask
;
1484 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1486 struct nfs4_exception exception
= { };
1489 err
= nfs4_handle_exception(server
,
1490 _nfs4_server_capabilities(server
, fhandle
),
1492 } while (exception
.retry
);
1496 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1497 struct nfs_fsinfo
*info
)
1499 struct nfs4_lookup_root_arg args
= {
1500 .bitmask
= nfs4_fattr_bitmap
,
1502 struct nfs4_lookup_res res
= {
1504 .fattr
= info
->fattr
,
1507 struct rpc_message msg
= {
1508 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
1512 nfs_fattr_init(info
->fattr
);
1513 return rpc_call_sync(server
->client
, &msg
, 0);
1516 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1517 struct nfs_fsinfo
*info
)
1519 struct nfs4_exception exception
= { };
1522 err
= nfs4_handle_exception(server
,
1523 _nfs4_lookup_root(server
, fhandle
, info
),
1525 } while (exception
.retry
);
1530 * get the file handle for the "/" directory on the server
1532 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1533 struct nfs_fsinfo
*info
)
1537 status
= nfs4_lookup_root(server
, fhandle
, info
);
1539 status
= nfs4_server_capabilities(server
, fhandle
);
1541 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
1542 return nfs4_map_errors(status
);
1546 * Get locations and (maybe) other attributes of a referral.
1547 * Note that we'll actually follow the referral later when
1548 * we detect fsid mismatch in inode revalidation
1550 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
1552 int status
= -ENOMEM
;
1553 struct page
*page
= NULL
;
1554 struct nfs4_fs_locations
*locations
= NULL
;
1556 page
= alloc_page(GFP_KERNEL
);
1559 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
1560 if (locations
== NULL
)
1563 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
1566 /* Make sure server returned a different fsid for the referral */
1567 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
1568 dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__
, name
->name
);
1573 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
1574 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
1576 fattr
->mode
= S_IFDIR
;
1577 memset(fhandle
, 0, sizeof(struct nfs_fh
));
1586 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1588 struct nfs4_getattr_arg args
= {
1590 .bitmask
= server
->attr_bitmask
,
1592 struct nfs4_getattr_res res
= {
1596 struct rpc_message msg
= {
1597 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
1602 nfs_fattr_init(fattr
);
1603 return rpc_call_sync(server
->client
, &msg
, 0);
1606 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1608 struct nfs4_exception exception
= { };
1611 err
= nfs4_handle_exception(server
,
1612 _nfs4_proc_getattr(server
, fhandle
, fattr
),
1614 } while (exception
.retry
);
1619 * The file is not closed if it is opened due to the a request to change
1620 * the size of the file. The open call will not be needed once the
1621 * VFS layer lookup-intents are implemented.
1623 * Close is called when the inode is destroyed.
1624 * If we haven't opened the file for O_WRONLY, we
1625 * need to in the size_change case to obtain a stateid.
1628 * Because OPEN is always done by name in nfsv4, it is
1629 * possible that we opened a different file by the same
1630 * name. We can recognize this race condition, but we
1631 * can't do anything about it besides returning an error.
1633 * This will be fixed with VFS changes (lookup-intent).
1636 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
1637 struct iattr
*sattr
)
1639 struct rpc_cred
*cred
;
1640 struct inode
*inode
= dentry
->d_inode
;
1641 struct nfs_open_context
*ctx
;
1642 struct nfs4_state
*state
= NULL
;
1645 nfs_fattr_init(fattr
);
1647 cred
= rpcauth_lookupcred(NFS_CLIENT(inode
)->cl_auth
, 0);
1649 return PTR_ERR(cred
);
1651 /* Search for an existing open(O_WRITE) file */
1652 ctx
= nfs_find_open_context(inode
, cred
, FMODE_WRITE
);
1656 status
= nfs4_do_setattr(inode
, fattr
, sattr
, state
);
1658 nfs_setattr_update_inode(inode
, sattr
);
1660 put_nfs_open_context(ctx
);
1665 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
1666 const struct qstr
*name
, struct nfs_fh
*fhandle
,
1667 struct nfs_fattr
*fattr
)
1670 struct nfs4_lookup_arg args
= {
1671 .bitmask
= server
->attr_bitmask
,
1675 struct nfs4_lookup_res res
= {
1680 struct rpc_message msg
= {
1681 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1686 nfs_fattr_init(fattr
);
1688 dprintk("NFS call lookupfh %s\n", name
->name
);
1689 status
= rpc_call_sync(server
->client
, &msg
, 0);
1690 dprintk("NFS reply lookupfh: %d\n", status
);
1694 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1695 struct qstr
*name
, struct nfs_fh
*fhandle
,
1696 struct nfs_fattr
*fattr
)
1698 struct nfs4_exception exception
= { };
1701 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
1703 if (err
== -NFS4ERR_MOVED
) {
1707 err
= nfs4_handle_exception(server
, err
, &exception
);
1708 } while (exception
.retry
);
1712 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
1713 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1717 dprintk("NFS call lookup %s\n", name
->name
);
1718 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
1719 if (status
== -NFS4ERR_MOVED
)
1720 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
1721 dprintk("NFS reply lookup: %d\n", status
);
1725 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1727 struct nfs4_exception exception
= { };
1730 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1731 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
1733 } while (exception
.retry
);
1737 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1739 struct nfs_server
*server
= NFS_SERVER(inode
);
1740 struct nfs_fattr fattr
;
1741 struct nfs4_accessargs args
= {
1742 .fh
= NFS_FH(inode
),
1743 .bitmask
= server
->attr_bitmask
,
1745 struct nfs4_accessres res
= {
1749 struct rpc_message msg
= {
1750 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
1753 .rpc_cred
= entry
->cred
,
1755 int mode
= entry
->mask
;
1759 * Determine which access bits we want to ask for...
1761 if (mode
& MAY_READ
)
1762 args
.access
|= NFS4_ACCESS_READ
;
1763 if (S_ISDIR(inode
->i_mode
)) {
1764 if (mode
& MAY_WRITE
)
1765 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
1766 if (mode
& MAY_EXEC
)
1767 args
.access
|= NFS4_ACCESS_LOOKUP
;
1769 if (mode
& MAY_WRITE
)
1770 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
1771 if (mode
& MAY_EXEC
)
1772 args
.access
|= NFS4_ACCESS_EXECUTE
;
1774 nfs_fattr_init(&fattr
);
1775 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1778 if (res
.access
& NFS4_ACCESS_READ
)
1779 entry
->mask
|= MAY_READ
;
1780 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
1781 entry
->mask
|= MAY_WRITE
;
1782 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
1783 entry
->mask
|= MAY_EXEC
;
1784 nfs_refresh_inode(inode
, &fattr
);
1789 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1791 struct nfs4_exception exception
= { };
1794 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1795 _nfs4_proc_access(inode
, entry
),
1797 } while (exception
.retry
);
1802 * TODO: For the time being, we don't try to get any attributes
1803 * along with any of the zero-copy operations READ, READDIR,
1806 * In the case of the first three, we want to put the GETATTR
1807 * after the read-type operation -- this is because it is hard
1808 * to predict the length of a GETATTR response in v4, and thus
1809 * align the READ data correctly. This means that the GETATTR
1810 * may end up partially falling into the page cache, and we should
1811 * shift it into the 'tail' of the xdr_buf before processing.
1812 * To do this efficiently, we need to know the total length
1813 * of data received, which doesn't seem to be available outside
1816 * In the case of WRITE, we also want to put the GETATTR after
1817 * the operation -- in this case because we want to make sure
1818 * we get the post-operation mtime and size. This means that
1819 * we can't use xdr_encode_pages() as written: we need a variant
1820 * of it which would leave room in the 'tail' iovec.
1822 * Both of these changes to the XDR layer would in fact be quite
1823 * minor, but I decided to leave them for a subsequent patch.
1825 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1826 unsigned int pgbase
, unsigned int pglen
)
1828 struct nfs4_readlink args
= {
1829 .fh
= NFS_FH(inode
),
1834 struct rpc_message msg
= {
1835 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
1840 return rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1843 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1844 unsigned int pgbase
, unsigned int pglen
)
1846 struct nfs4_exception exception
= { };
1849 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1850 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
1852 } while (exception
.retry
);
1858 * We will need to arrange for the VFS layer to provide an atomic open.
1859 * Until then, this create/open method is prone to inefficiency and race
1860 * conditions due to the lookup, create, and open VFS calls from sys_open()
1861 * placed on the wire.
1863 * Given the above sorry state of affairs, I'm simply sending an OPEN.
1864 * The file will be opened again in the subsequent VFS open call
1865 * (nfs4_proc_file_open).
1867 * The open for read will just hang around to be used by any process that
1868 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
1872 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
1873 int flags
, struct nameidata
*nd
)
1875 struct path path
= {
1879 struct nfs4_state
*state
;
1880 struct rpc_cred
*cred
;
1883 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1885 status
= PTR_ERR(cred
);
1888 state
= nfs4_do_open(dir
, &path
, flags
, sattr
, cred
);
1891 if (IS_ERR(state
)) {
1892 status
= PTR_ERR(state
);
1895 d_add(dentry
, igrab(state
->inode
));
1896 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1897 if (flags
& O_EXCL
) {
1898 struct nfs_fattr fattr
;
1899 status
= nfs4_do_setattr(state
->inode
, &fattr
, sattr
, state
);
1901 nfs_setattr_update_inode(state
->inode
, sattr
);
1902 nfs_post_op_update_inode(state
->inode
, &fattr
);
1904 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
1905 status
= nfs4_intent_set_file(nd
, &path
, state
);
1907 nfs4_close_state(&path
, state
, flags
);
1912 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1914 struct nfs_server
*server
= NFS_SERVER(dir
);
1915 struct nfs_removeargs args
= {
1917 .name
.len
= name
->len
,
1918 .name
.name
= name
->name
,
1919 .bitmask
= server
->attr_bitmask
,
1921 struct nfs_removeres res
= {
1924 struct rpc_message msg
= {
1925 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
1931 nfs_fattr_init(&res
.dir_attr
);
1932 status
= rpc_call_sync(server
->client
, &msg
, 0);
1934 update_changeattr(dir
, &res
.cinfo
);
1935 nfs_post_op_update_inode(dir
, &res
.dir_attr
);
1940 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1942 struct nfs4_exception exception
= { };
1945 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1946 _nfs4_proc_remove(dir
, name
),
1948 } while (exception
.retry
);
1952 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
1954 struct nfs_server
*server
= NFS_SERVER(dir
);
1955 struct nfs_removeargs
*args
= msg
->rpc_argp
;
1956 struct nfs_removeres
*res
= msg
->rpc_resp
;
1958 args
->bitmask
= server
->attr_bitmask
;
1959 res
->server
= server
;
1960 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
1963 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
1965 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
1967 if (nfs4_async_handle_error(task
, res
->server
) == -EAGAIN
)
1969 update_changeattr(dir
, &res
->cinfo
);
1970 nfs_post_op_update_inode(dir
, &res
->dir_attr
);
1974 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1975 struct inode
*new_dir
, struct qstr
*new_name
)
1977 struct nfs_server
*server
= NFS_SERVER(old_dir
);
1978 struct nfs4_rename_arg arg
= {
1979 .old_dir
= NFS_FH(old_dir
),
1980 .new_dir
= NFS_FH(new_dir
),
1981 .old_name
= old_name
,
1982 .new_name
= new_name
,
1983 .bitmask
= server
->attr_bitmask
,
1985 struct nfs_fattr old_fattr
, new_fattr
;
1986 struct nfs4_rename_res res
= {
1988 .old_fattr
= &old_fattr
,
1989 .new_fattr
= &new_fattr
,
1991 struct rpc_message msg
= {
1992 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
1998 nfs_fattr_init(res
.old_fattr
);
1999 nfs_fattr_init(res
.new_fattr
);
2000 status
= rpc_call_sync(server
->client
, &msg
, 0);
2003 update_changeattr(old_dir
, &res
.old_cinfo
);
2004 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2005 update_changeattr(new_dir
, &res
.new_cinfo
);
2006 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2011 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2012 struct inode
*new_dir
, struct qstr
*new_name
)
2014 struct nfs4_exception exception
= { };
2017 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2018 _nfs4_proc_rename(old_dir
, old_name
,
2021 } while (exception
.retry
);
2025 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2027 struct nfs_server
*server
= NFS_SERVER(inode
);
2028 struct nfs4_link_arg arg
= {
2029 .fh
= NFS_FH(inode
),
2030 .dir_fh
= NFS_FH(dir
),
2032 .bitmask
= server
->attr_bitmask
,
2034 struct nfs_fattr fattr
, dir_attr
;
2035 struct nfs4_link_res res
= {
2038 .dir_attr
= &dir_attr
,
2040 struct rpc_message msg
= {
2041 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2047 nfs_fattr_init(res
.fattr
);
2048 nfs_fattr_init(res
.dir_attr
);
2049 status
= rpc_call_sync(server
->client
, &msg
, 0);
2051 update_changeattr(dir
, &res
.cinfo
);
2052 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2053 nfs_post_op_update_inode(inode
, res
.fattr
);
2059 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2061 struct nfs4_exception exception
= { };
2064 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2065 _nfs4_proc_link(inode
, dir
, name
),
2067 } while (exception
.retry
);
2071 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2072 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2074 struct nfs_server
*server
= NFS_SERVER(dir
);
2075 struct nfs_fh fhandle
;
2076 struct nfs_fattr fattr
, dir_fattr
;
2077 struct nfs4_create_arg arg
= {
2078 .dir_fh
= NFS_FH(dir
),
2080 .name
= &dentry
->d_name
,
2083 .bitmask
= server
->attr_bitmask
,
2085 struct nfs4_create_res res
= {
2089 .dir_fattr
= &dir_fattr
,
2091 struct rpc_message msg
= {
2092 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
],
2098 if (len
> NFS4_MAXPATHLEN
)
2099 return -ENAMETOOLONG
;
2101 arg
.u
.symlink
.pages
= &page
;
2102 arg
.u
.symlink
.len
= len
;
2103 nfs_fattr_init(&fattr
);
2104 nfs_fattr_init(&dir_fattr
);
2106 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2108 update_changeattr(dir
, &res
.dir_cinfo
);
2109 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2110 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2115 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2116 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2118 struct nfs4_exception exception
= { };
2121 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2122 _nfs4_proc_symlink(dir
, dentry
, page
,
2125 } while (exception
.retry
);
2129 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2130 struct iattr
*sattr
)
2132 struct nfs_server
*server
= NFS_SERVER(dir
);
2133 struct nfs_fh fhandle
;
2134 struct nfs_fattr fattr
, dir_fattr
;
2135 struct nfs4_create_arg arg
= {
2136 .dir_fh
= NFS_FH(dir
),
2138 .name
= &dentry
->d_name
,
2141 .bitmask
= server
->attr_bitmask
,
2143 struct nfs4_create_res res
= {
2147 .dir_fattr
= &dir_fattr
,
2149 struct rpc_message msg
= {
2150 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2156 nfs_fattr_init(&fattr
);
2157 nfs_fattr_init(&dir_fattr
);
2159 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2161 update_changeattr(dir
, &res
.dir_cinfo
);
2162 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2163 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2168 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2169 struct iattr
*sattr
)
2171 struct nfs4_exception exception
= { };
2174 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2175 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2177 } while (exception
.retry
);
2181 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2182 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2184 struct inode
*dir
= dentry
->d_inode
;
2185 struct nfs4_readdir_arg args
= {
2190 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2192 struct nfs4_readdir_res res
;
2193 struct rpc_message msg
= {
2194 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2201 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__
,
2202 dentry
->d_parent
->d_name
.name
,
2203 dentry
->d_name
.name
,
2204 (unsigned long long)cookie
);
2205 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2206 res
.pgbase
= args
.pgbase
;
2207 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2209 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2211 nfs_invalidate_atime(dir
);
2213 dprintk("%s: returns %d\n", __FUNCTION__
, status
);
2217 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2218 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2220 struct nfs4_exception exception
= { };
2223 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2224 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2227 } while (exception
.retry
);
2231 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2232 struct iattr
*sattr
, dev_t rdev
)
2234 struct nfs_server
*server
= NFS_SERVER(dir
);
2236 struct nfs_fattr fattr
, dir_fattr
;
2237 struct nfs4_create_arg arg
= {
2238 .dir_fh
= NFS_FH(dir
),
2240 .name
= &dentry
->d_name
,
2242 .bitmask
= server
->attr_bitmask
,
2244 struct nfs4_create_res res
= {
2248 .dir_fattr
= &dir_fattr
,
2250 struct rpc_message msg
= {
2251 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2256 int mode
= sattr
->ia_mode
;
2258 nfs_fattr_init(&fattr
);
2259 nfs_fattr_init(&dir_fattr
);
2261 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2262 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2264 arg
.ftype
= NF4FIFO
;
2265 else if (S_ISBLK(mode
)) {
2267 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2268 arg
.u
.device
.specdata2
= MINOR(rdev
);
2270 else if (S_ISCHR(mode
)) {
2272 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2273 arg
.u
.device
.specdata2
= MINOR(rdev
);
2276 arg
.ftype
= NF4SOCK
;
2278 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2280 update_changeattr(dir
, &res
.dir_cinfo
);
2281 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2282 status
= nfs_instantiate(dentry
, &fh
, &fattr
);
2287 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2288 struct iattr
*sattr
, dev_t rdev
)
2290 struct nfs4_exception exception
= { };
2293 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2294 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2296 } while (exception
.retry
);
2300 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2301 struct nfs_fsstat
*fsstat
)
2303 struct nfs4_statfs_arg args
= {
2305 .bitmask
= server
->attr_bitmask
,
2307 struct rpc_message msg
= {
2308 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2313 nfs_fattr_init(fsstat
->fattr
);
2314 return rpc_call_sync(server
->client
, &msg
, 0);
2317 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2319 struct nfs4_exception exception
= { };
2322 err
= nfs4_handle_exception(server
,
2323 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2325 } while (exception
.retry
);
2329 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2330 struct nfs_fsinfo
*fsinfo
)
2332 struct nfs4_fsinfo_arg args
= {
2334 .bitmask
= server
->attr_bitmask
,
2336 struct rpc_message msg
= {
2337 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2342 return rpc_call_sync(server
->client
, &msg
, 0);
2345 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2347 struct nfs4_exception exception
= { };
2351 err
= nfs4_handle_exception(server
,
2352 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2354 } while (exception
.retry
);
2358 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2360 nfs_fattr_init(fsinfo
->fattr
);
2361 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2364 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2365 struct nfs_pathconf
*pathconf
)
2367 struct nfs4_pathconf_arg args
= {
2369 .bitmask
= server
->attr_bitmask
,
2371 struct rpc_message msg
= {
2372 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2374 .rpc_resp
= pathconf
,
2377 /* None of the pathconf attributes are mandatory to implement */
2378 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2379 memset(pathconf
, 0, sizeof(*pathconf
));
2383 nfs_fattr_init(pathconf
->fattr
);
2384 return rpc_call_sync(server
->client
, &msg
, 0);
2387 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2388 struct nfs_pathconf
*pathconf
)
2390 struct nfs4_exception exception
= { };
2394 err
= nfs4_handle_exception(server
,
2395 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2397 } while (exception
.retry
);
2401 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2403 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2405 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
2406 rpc_restart_call(task
);
2410 nfs_invalidate_atime(data
->inode
);
2411 if (task
->tk_status
> 0)
2412 renew_lease(server
, data
->timestamp
);
2416 static void nfs4_proc_read_setup(struct nfs_read_data
*data
)
2418 struct rpc_message msg
= {
2419 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
],
2420 .rpc_argp
= &data
->args
,
2421 .rpc_resp
= &data
->res
,
2422 .rpc_cred
= data
->cred
,
2425 data
->timestamp
= jiffies
;
2427 rpc_call_setup(&data
->task
, &msg
, 0);
2430 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2432 struct inode
*inode
= data
->inode
;
2434 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2435 rpc_restart_call(task
);
2438 if (task
->tk_status
>= 0) {
2439 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2440 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
2445 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, int how
)
2447 struct rpc_message msg
= {
2448 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
],
2449 .rpc_argp
= &data
->args
,
2450 .rpc_resp
= &data
->res
,
2451 .rpc_cred
= data
->cred
,
2453 struct inode
*inode
= data
->inode
;
2454 struct nfs_server
*server
= NFS_SERVER(inode
);
2457 if (how
& FLUSH_STABLE
) {
2458 if (!NFS_I(inode
)->ncommit
)
2459 stable
= NFS_FILE_SYNC
;
2461 stable
= NFS_DATA_SYNC
;
2463 stable
= NFS_UNSTABLE
;
2464 data
->args
.stable
= stable
;
2465 data
->args
.bitmask
= server
->attr_bitmask
;
2466 data
->res
.server
= server
;
2468 data
->timestamp
= jiffies
;
2470 /* Finalize the task. */
2471 rpc_call_setup(&data
->task
, &msg
, 0);
2474 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2476 struct inode
*inode
= data
->inode
;
2478 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2479 rpc_restart_call(task
);
2482 nfs_refresh_inode(inode
, data
->res
.fattr
);
2486 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, int how
)
2488 struct rpc_message msg
= {
2489 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
],
2490 .rpc_argp
= &data
->args
,
2491 .rpc_resp
= &data
->res
,
2492 .rpc_cred
= data
->cred
,
2494 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2496 data
->args
.bitmask
= server
->attr_bitmask
;
2497 data
->res
.server
= server
;
2499 rpc_call_setup(&data
->task
, &msg
, 0);
2503 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
2504 * standalone procedure for queueing an asynchronous RENEW.
2506 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
2508 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
2509 unsigned long timestamp
= (unsigned long)data
;
2511 if (task
->tk_status
< 0) {
2512 switch (task
->tk_status
) {
2513 case -NFS4ERR_STALE_CLIENTID
:
2514 case -NFS4ERR_EXPIRED
:
2515 case -NFS4ERR_CB_PATH_DOWN
:
2516 nfs4_schedule_state_recovery(clp
);
2520 spin_lock(&clp
->cl_lock
);
2521 if (time_before(clp
->cl_last_renewal
,timestamp
))
2522 clp
->cl_last_renewal
= timestamp
;
2523 spin_unlock(&clp
->cl_lock
);
2526 static const struct rpc_call_ops nfs4_renew_ops
= {
2527 .rpc_call_done
= nfs4_renew_done
,
2530 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2532 struct rpc_message msg
= {
2533 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2538 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
2539 &nfs4_renew_ops
, (void *)jiffies
);
2542 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2544 struct rpc_message msg
= {
2545 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2549 unsigned long now
= jiffies
;
2552 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2555 spin_lock(&clp
->cl_lock
);
2556 if (time_before(clp
->cl_last_renewal
,now
))
2557 clp
->cl_last_renewal
= now
;
2558 spin_unlock(&clp
->cl_lock
);
2562 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
2564 return (server
->caps
& NFS_CAP_ACLS
)
2565 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2566 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
2569 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
2570 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
2573 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
2575 static void buf_to_pages(const void *buf
, size_t buflen
,
2576 struct page
**pages
, unsigned int *pgbase
)
2578 const void *p
= buf
;
2580 *pgbase
= offset_in_page(buf
);
2582 while (p
< buf
+ buflen
) {
2583 *(pages
++) = virt_to_page(p
);
2584 p
+= PAGE_CACHE_SIZE
;
2588 struct nfs4_cached_acl
{
2594 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
2596 struct nfs_inode
*nfsi
= NFS_I(inode
);
2598 spin_lock(&inode
->i_lock
);
2599 kfree(nfsi
->nfs4_acl
);
2600 nfsi
->nfs4_acl
= acl
;
2601 spin_unlock(&inode
->i_lock
);
2604 static void nfs4_zap_acl_attr(struct inode
*inode
)
2606 nfs4_set_cached_acl(inode
, NULL
);
2609 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
2611 struct nfs_inode
*nfsi
= NFS_I(inode
);
2612 struct nfs4_cached_acl
*acl
;
2615 spin_lock(&inode
->i_lock
);
2616 acl
= nfsi
->nfs4_acl
;
2619 if (buf
== NULL
) /* user is just asking for length */
2621 if (acl
->cached
== 0)
2623 ret
= -ERANGE
; /* see getxattr(2) man page */
2624 if (acl
->len
> buflen
)
2626 memcpy(buf
, acl
->data
, acl
->len
);
2630 spin_unlock(&inode
->i_lock
);
2634 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
2636 struct nfs4_cached_acl
*acl
;
2638 if (buf
&& acl_len
<= PAGE_SIZE
) {
2639 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
2643 memcpy(acl
->data
, buf
, acl_len
);
2645 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
2652 nfs4_set_cached_acl(inode
, acl
);
2655 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2657 struct page
*pages
[NFS4ACL_MAXPAGES
];
2658 struct nfs_getaclargs args
= {
2659 .fh
= NFS_FH(inode
),
2663 size_t resp_len
= buflen
;
2665 struct rpc_message msg
= {
2666 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
2668 .rpc_resp
= &resp_len
,
2670 struct page
*localpage
= NULL
;
2673 if (buflen
< PAGE_SIZE
) {
2674 /* As long as we're doing a round trip to the server anyway,
2675 * let's be prepared for a page of acl data. */
2676 localpage
= alloc_page(GFP_KERNEL
);
2677 resp_buf
= page_address(localpage
);
2678 if (localpage
== NULL
)
2680 args
.acl_pages
[0] = localpage
;
2681 args
.acl_pgbase
= 0;
2682 resp_len
= args
.acl_len
= PAGE_SIZE
;
2685 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
2687 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2690 if (resp_len
> args
.acl_len
)
2691 nfs4_write_cached_acl(inode
, NULL
, resp_len
);
2693 nfs4_write_cached_acl(inode
, resp_buf
, resp_len
);
2696 if (resp_len
> buflen
)
2699 memcpy(buf
, resp_buf
, resp_len
);
2704 __free_page(localpage
);
2708 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2710 struct nfs4_exception exception
= { };
2713 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
2716 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
2717 } while (exception
.retry
);
2721 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
2723 struct nfs_server
*server
= NFS_SERVER(inode
);
2726 if (!nfs4_server_supports_acls(server
))
2728 ret
= nfs_revalidate_inode(server
, inode
);
2731 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
2734 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
2737 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2739 struct nfs_server
*server
= NFS_SERVER(inode
);
2740 struct page
*pages
[NFS4ACL_MAXPAGES
];
2741 struct nfs_setaclargs arg
= {
2742 .fh
= NFS_FH(inode
),
2746 struct rpc_message msg
= {
2747 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
2753 if (!nfs4_server_supports_acls(server
))
2755 nfs_inode_return_delegation(inode
);
2756 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
2757 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2758 nfs_zap_caches(inode
);
2762 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2764 struct nfs4_exception exception
= { };
2767 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2768 __nfs4_proc_set_acl(inode
, buf
, buflen
),
2770 } while (exception
.retry
);
2775 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
)
2777 struct nfs_client
*clp
= server
->nfs_client
;
2779 if (!clp
|| task
->tk_status
>= 0)
2781 switch(task
->tk_status
) {
2782 case -NFS4ERR_STALE_CLIENTID
:
2783 case -NFS4ERR_STALE_STATEID
:
2784 case -NFS4ERR_EXPIRED
:
2785 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
, NULL
);
2786 nfs4_schedule_state_recovery(clp
);
2787 if (test_bit(NFS4CLNT_STATE_RECOVER
, &clp
->cl_state
) == 0)
2788 rpc_wake_up_task(task
);
2789 task
->tk_status
= 0;
2791 case -NFS4ERR_DELAY
:
2792 nfs_inc_server_stats((struct nfs_server
*) server
,
2794 case -NFS4ERR_GRACE
:
2795 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
2796 task
->tk_status
= 0;
2798 case -NFS4ERR_OLD_STATEID
:
2799 task
->tk_status
= 0;
2802 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
2806 static int nfs4_wait_bit_interruptible(void *word
)
2808 if (signal_pending(current
))
2809 return -ERESTARTSYS
;
2814 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
)
2821 rwsem_acquire(&clp
->cl_sem
.dep_map
, 0, 0, _RET_IP_
);
2823 rpc_clnt_sigmask(clnt
, &oldset
);
2824 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_STATE_RECOVER
,
2825 nfs4_wait_bit_interruptible
,
2826 TASK_INTERRUPTIBLE
);
2827 rpc_clnt_sigunmask(clnt
, &oldset
);
2829 rwsem_release(&clp
->cl_sem
.dep_map
, 1, _RET_IP_
);
2833 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
2841 *timeout
= NFS4_POLL_RETRY_MIN
;
2842 if (*timeout
> NFS4_POLL_RETRY_MAX
)
2843 *timeout
= NFS4_POLL_RETRY_MAX
;
2844 rpc_clnt_sigmask(clnt
, &oldset
);
2845 if (clnt
->cl_intr
) {
2846 schedule_timeout_interruptible(*timeout
);
2850 schedule_timeout_uninterruptible(*timeout
);
2851 rpc_clnt_sigunmask(clnt
, &oldset
);
2856 /* This is the error handling routine for processes that are allowed
2859 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
2861 struct nfs_client
*clp
= server
->nfs_client
;
2862 int ret
= errorcode
;
2864 exception
->retry
= 0;
2868 case -NFS4ERR_STALE_CLIENTID
:
2869 case -NFS4ERR_STALE_STATEID
:
2870 case -NFS4ERR_EXPIRED
:
2871 nfs4_schedule_state_recovery(clp
);
2872 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
2874 exception
->retry
= 1;
2876 case -NFS4ERR_FILE_OPEN
:
2877 case -NFS4ERR_GRACE
:
2878 case -NFS4ERR_DELAY
:
2879 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
2882 case -NFS4ERR_OLD_STATEID
:
2883 exception
->retry
= 1;
2885 /* We failed to handle the error */
2886 return nfs4_map_errors(ret
);
2889 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
2891 nfs4_verifier sc_verifier
;
2892 struct nfs4_setclientid setclientid
= {
2893 .sc_verifier
= &sc_verifier
,
2896 struct rpc_message msg
= {
2897 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
2898 .rpc_argp
= &setclientid
,
2906 p
= (__be32
*)sc_verifier
.data
;
2907 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
2908 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
2911 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
2912 sizeof(setclientid
.sc_name
), "%s/%u.%u.%u.%u %s %u",
2913 clp
->cl_ipaddr
, NIPQUAD(clp
->cl_addr
.sin_addr
),
2914 cred
->cr_ops
->cr_name
,
2915 clp
->cl_id_uniquifier
);
2916 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
2917 sizeof(setclientid
.sc_netid
), "tcp");
2918 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
2919 sizeof(setclientid
.sc_uaddr
), "%s.%d.%d",
2920 clp
->cl_ipaddr
, port
>> 8, port
& 255);
2922 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2923 if (status
!= -NFS4ERR_CLID_INUSE
)
2928 ssleep(clp
->cl_lease_time
+ 1);
2930 if (++clp
->cl_id_uniquifier
== 0)
2936 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2938 struct nfs_fsinfo fsinfo
;
2939 struct rpc_message msg
= {
2940 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
2942 .rpc_resp
= &fsinfo
,
2949 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2951 spin_lock(&clp
->cl_lock
);
2952 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
2953 clp
->cl_last_renewal
= now
;
2954 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
2955 spin_unlock(&clp
->cl_lock
);
2960 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2965 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
2969 case -NFS4ERR_RESOURCE
:
2970 /* The IBM lawyers misread another document! */
2971 case -NFS4ERR_DELAY
:
2972 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
2978 struct nfs4_delegreturndata
{
2979 struct nfs4_delegreturnargs args
;
2980 struct nfs4_delegreturnres res
;
2982 nfs4_stateid stateid
;
2983 struct rpc_cred
*cred
;
2984 unsigned long timestamp
;
2985 struct nfs_fattr fattr
;
2989 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *calldata
)
2991 struct nfs4_delegreturndata
*data
= calldata
;
2992 struct rpc_message msg
= {
2993 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
2994 .rpc_argp
= &data
->args
,
2995 .rpc_resp
= &data
->res
,
2996 .rpc_cred
= data
->cred
,
2998 nfs_fattr_init(data
->res
.fattr
);
2999 rpc_call_setup(task
, &msg
, 0);
3002 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3004 struct nfs4_delegreturndata
*data
= calldata
;
3005 data
->rpc_status
= task
->tk_status
;
3006 if (data
->rpc_status
== 0)
3007 renew_lease(data
->res
.server
, data
->timestamp
);
3010 static void nfs4_delegreturn_release(void *calldata
)
3012 struct nfs4_delegreturndata
*data
= calldata
;
3014 put_rpccred(data
->cred
);
3018 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3019 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3020 .rpc_call_done
= nfs4_delegreturn_done
,
3021 .rpc_release
= nfs4_delegreturn_release
,
3024 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
3026 struct nfs4_delegreturndata
*data
;
3027 struct nfs_server
*server
= NFS_SERVER(inode
);
3028 struct rpc_task
*task
;
3031 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3034 data
->args
.fhandle
= &data
->fh
;
3035 data
->args
.stateid
= &data
->stateid
;
3036 data
->args
.bitmask
= server
->attr_bitmask
;
3037 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3038 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3039 data
->res
.fattr
= &data
->fattr
;
3040 data
->res
.server
= server
;
3041 data
->cred
= get_rpccred(cred
);
3042 data
->timestamp
= jiffies
;
3043 data
->rpc_status
= 0;
3045 task
= rpc_run_task(NFS_CLIENT(inode
), RPC_TASK_ASYNC
, &nfs4_delegreturn_ops
, data
);
3047 return PTR_ERR(task
);
3048 status
= nfs4_wait_for_completion_rpc_task(task
);
3050 status
= data
->rpc_status
;
3052 nfs_refresh_inode(inode
, &data
->fattr
);
3058 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
3060 struct nfs_server
*server
= NFS_SERVER(inode
);
3061 struct nfs4_exception exception
= { };
3064 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
);
3066 case -NFS4ERR_STALE_STATEID
:
3067 case -NFS4ERR_EXPIRED
:
3071 err
= nfs4_handle_exception(server
, err
, &exception
);
3072 } while (exception
.retry
);
3076 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3077 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3080 * sleep, with exponential backoff, and retry the LOCK operation.
3082 static unsigned long
3083 nfs4_set_lock_task_retry(unsigned long timeout
)
3085 schedule_timeout_interruptible(timeout
);
3087 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3088 return NFS4_LOCK_MAXTIMEOUT
;
3092 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3094 struct inode
*inode
= state
->inode
;
3095 struct nfs_server
*server
= NFS_SERVER(inode
);
3096 struct nfs_client
*clp
= server
->nfs_client
;
3097 struct nfs_lockt_args arg
= {
3098 .fh
= NFS_FH(inode
),
3101 struct nfs_lockt_res res
= {
3104 struct rpc_message msg
= {
3105 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3108 .rpc_cred
= state
->owner
->so_cred
,
3110 struct nfs4_lock_state
*lsp
;
3113 down_read(&clp
->cl_sem
);
3114 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3115 status
= nfs4_set_lock_state(state
, request
);
3118 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3119 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3120 status
= rpc_call_sync(server
->client
, &msg
, 0);
3123 request
->fl_type
= F_UNLCK
;
3125 case -NFS4ERR_DENIED
:
3128 request
->fl_ops
->fl_release_private(request
);
3130 up_read(&clp
->cl_sem
);
3134 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3136 struct nfs4_exception exception
= { };
3140 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3141 _nfs4_proc_getlk(state
, cmd
, request
),
3143 } while (exception
.retry
);
3147 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3150 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3152 res
= posix_lock_file_wait(file
, fl
);
3155 res
= flock_lock_file_wait(file
, fl
);
3163 struct nfs4_unlockdata
{
3164 struct nfs_locku_args arg
;
3165 struct nfs_locku_res res
;
3166 struct nfs4_lock_state
*lsp
;
3167 struct nfs_open_context
*ctx
;
3168 struct file_lock fl
;
3169 const struct nfs_server
*server
;
3170 unsigned long timestamp
;
3173 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3174 struct nfs_open_context
*ctx
,
3175 struct nfs4_lock_state
*lsp
,
3176 struct nfs_seqid
*seqid
)
3178 struct nfs4_unlockdata
*p
;
3179 struct inode
*inode
= lsp
->ls_state
->inode
;
3181 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
3184 p
->arg
.fh
= NFS_FH(inode
);
3186 p
->arg
.seqid
= seqid
;
3187 p
->arg
.stateid
= &lsp
->ls_stateid
;
3189 atomic_inc(&lsp
->ls_count
);
3190 /* Ensure we don't close file until we're done freeing locks! */
3191 p
->ctx
= get_nfs_open_context(ctx
);
3192 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3193 p
->server
= NFS_SERVER(inode
);
3197 static void nfs4_locku_release_calldata(void *data
)
3199 struct nfs4_unlockdata
*calldata
= data
;
3200 nfs_free_seqid(calldata
->arg
.seqid
);
3201 nfs4_put_lock_state(calldata
->lsp
);
3202 put_nfs_open_context(calldata
->ctx
);
3206 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3208 struct nfs4_unlockdata
*calldata
= data
;
3210 if (RPC_ASSASSINATED(task
))
3212 nfs_increment_lock_seqid(task
->tk_status
, calldata
->arg
.seqid
);
3213 switch (task
->tk_status
) {
3215 memcpy(calldata
->lsp
->ls_stateid
.data
,
3216 calldata
->res
.stateid
.data
,
3217 sizeof(calldata
->lsp
->ls_stateid
.data
));
3218 renew_lease(calldata
->server
, calldata
->timestamp
);
3220 case -NFS4ERR_STALE_STATEID
:
3221 case -NFS4ERR_EXPIRED
:
3224 if (nfs4_async_handle_error(task
, calldata
->server
) == -EAGAIN
)
3225 rpc_restart_call(task
);
3229 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3231 struct nfs4_unlockdata
*calldata
= data
;
3232 struct rpc_message msg
= {
3233 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3234 .rpc_argp
= &calldata
->arg
,
3235 .rpc_resp
= &calldata
->res
,
3236 .rpc_cred
= calldata
->lsp
->ls_state
->owner
->so_cred
,
3239 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3241 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3242 /* Note: exit _without_ running nfs4_locku_done */
3243 task
->tk_action
= NULL
;
3246 calldata
->timestamp
= jiffies
;
3247 rpc_call_setup(task
, &msg
, 0);
3250 static const struct rpc_call_ops nfs4_locku_ops
= {
3251 .rpc_call_prepare
= nfs4_locku_prepare
,
3252 .rpc_call_done
= nfs4_locku_done
,
3253 .rpc_release
= nfs4_locku_release_calldata
,
3256 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3257 struct nfs_open_context
*ctx
,
3258 struct nfs4_lock_state
*lsp
,
3259 struct nfs_seqid
*seqid
)
3261 struct nfs4_unlockdata
*data
;
3263 /* Ensure this is an unlock - when canceling a lock, the
3264 * canceled lock is passed in, and it won't be an unlock.
3266 fl
->fl_type
= F_UNLCK
;
3268 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3270 nfs_free_seqid(seqid
);
3271 return ERR_PTR(-ENOMEM
);
3274 return rpc_run_task(NFS_CLIENT(lsp
->ls_state
->inode
), RPC_TASK_ASYNC
, &nfs4_locku_ops
, data
);
3277 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3279 struct nfs_seqid
*seqid
;
3280 struct nfs4_lock_state
*lsp
;
3281 struct rpc_task
*task
;
3284 status
= nfs4_set_lock_state(state
, request
);
3285 /* Unlock _before_ we do the RPC call */
3286 request
->fl_flags
|= FL_EXISTS
;
3287 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
)
3291 /* Is this a delegated lock? */
3292 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3294 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3295 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3299 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
3300 status
= PTR_ERR(task
);
3303 status
= nfs4_wait_for_completion_rpc_task(task
);
3309 struct nfs4_lockdata
{
3310 struct nfs_lock_args arg
;
3311 struct nfs_lock_res res
;
3312 struct nfs4_lock_state
*lsp
;
3313 struct nfs_open_context
*ctx
;
3314 struct file_lock fl
;
3315 unsigned long timestamp
;
3320 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3321 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3323 struct nfs4_lockdata
*p
;
3324 struct inode
*inode
= lsp
->ls_state
->inode
;
3325 struct nfs_server
*server
= NFS_SERVER(inode
);
3327 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3331 p
->arg
.fh
= NFS_FH(inode
);
3333 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3334 if (p
->arg
.lock_seqid
== NULL
)
3336 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3337 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3338 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3340 atomic_inc(&lsp
->ls_count
);
3341 p
->ctx
= get_nfs_open_context(ctx
);
3342 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3349 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3351 struct nfs4_lockdata
*data
= calldata
;
3352 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3353 struct nfs4_state_owner
*sp
= state
->owner
;
3354 struct rpc_message msg
= {
3355 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3356 .rpc_argp
= &data
->arg
,
3357 .rpc_resp
= &data
->res
,
3358 .rpc_cred
= sp
->so_cred
,
3361 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3363 dprintk("%s: begin!\n", __FUNCTION__
);
3364 /* Do we need to do an open_to_lock_owner? */
3365 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3366 data
->arg
.open_seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
3367 if (data
->arg
.open_seqid
== NULL
) {
3368 data
->rpc_status
= -ENOMEM
;
3369 task
->tk_action
= NULL
;
3372 data
->arg
.open_stateid
= &state
->stateid
;
3373 data
->arg
.new_lock_owner
= 1;
3375 data
->timestamp
= jiffies
;
3376 rpc_call_setup(task
, &msg
, 0);
3378 dprintk("%s: done!, ret = %d\n", __FUNCTION__
, data
->rpc_status
);
3381 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3383 struct nfs4_lockdata
*data
= calldata
;
3385 dprintk("%s: begin!\n", __FUNCTION__
);
3387 data
->rpc_status
= task
->tk_status
;
3388 if (RPC_ASSASSINATED(task
))
3390 if (data
->arg
.new_lock_owner
!= 0) {
3391 nfs_increment_open_seqid(data
->rpc_status
, data
->arg
.open_seqid
);
3392 if (data
->rpc_status
== 0)
3393 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3397 if (data
->rpc_status
== 0) {
3398 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3399 sizeof(data
->lsp
->ls_stateid
.data
));
3400 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3401 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3403 nfs_increment_lock_seqid(data
->rpc_status
, data
->arg
.lock_seqid
);
3405 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, data
->rpc_status
);
3408 static void nfs4_lock_release(void *calldata
)
3410 struct nfs4_lockdata
*data
= calldata
;
3412 dprintk("%s: begin!\n", __FUNCTION__
);
3413 if (data
->arg
.open_seqid
!= NULL
)
3414 nfs_free_seqid(data
->arg
.open_seqid
);
3415 if (data
->cancelled
!= 0) {
3416 struct rpc_task
*task
;
3417 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3418 data
->arg
.lock_seqid
);
3421 dprintk("%s: cancelling lock!\n", __FUNCTION__
);
3423 nfs_free_seqid(data
->arg
.lock_seqid
);
3424 nfs4_put_lock_state(data
->lsp
);
3425 put_nfs_open_context(data
->ctx
);
3427 dprintk("%s: done!\n", __FUNCTION__
);
3430 static const struct rpc_call_ops nfs4_lock_ops
= {
3431 .rpc_call_prepare
= nfs4_lock_prepare
,
3432 .rpc_call_done
= nfs4_lock_done
,
3433 .rpc_release
= nfs4_lock_release
,
3436 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3438 struct nfs4_lockdata
*data
;
3439 struct rpc_task
*task
;
3442 dprintk("%s: begin!\n", __FUNCTION__
);
3443 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
3444 fl
->fl_u
.nfs4_fl
.owner
);
3448 data
->arg
.block
= 1;
3450 data
->arg
.reclaim
= 1;
3451 task
= rpc_run_task(NFS_CLIENT(state
->inode
), RPC_TASK_ASYNC
,
3452 &nfs4_lock_ops
, data
);
3454 return PTR_ERR(task
);
3455 ret
= nfs4_wait_for_completion_rpc_task(task
);
3457 ret
= data
->rpc_status
;
3458 if (ret
== -NFS4ERR_DENIED
)
3461 data
->cancelled
= 1;
3463 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, ret
);
3467 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
3469 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3470 struct nfs4_exception exception
= { };
3474 /* Cache the lock if possible... */
3475 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3477 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
3478 if (err
!= -NFS4ERR_DELAY
)
3480 nfs4_handle_exception(server
, err
, &exception
);
3481 } while (exception
.retry
);
3485 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
3487 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3488 struct nfs4_exception exception
= { };
3491 err
= nfs4_set_lock_state(state
, request
);
3495 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3497 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
3498 if (err
!= -NFS4ERR_DELAY
)
3500 nfs4_handle_exception(server
, err
, &exception
);
3501 } while (exception
.retry
);
3505 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3507 struct nfs_client
*clp
= state
->owner
->so_client
;
3508 unsigned char fl_flags
= request
->fl_flags
;
3511 /* Is this a delegated open? */
3512 status
= nfs4_set_lock_state(state
, request
);
3515 request
->fl_flags
|= FL_ACCESS
;
3516 status
= do_vfs_lock(request
->fl_file
, request
);
3519 down_read(&clp
->cl_sem
);
3520 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3521 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3522 /* Yes: cache locks! */
3523 down_read(&nfsi
->rwsem
);
3524 /* ...but avoid races with delegation recall... */
3525 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3526 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
3527 status
= do_vfs_lock(request
->fl_file
, request
);
3528 up_read(&nfsi
->rwsem
);
3531 up_read(&nfsi
->rwsem
);
3533 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
3536 /* Note: we always want to sleep here! */
3537 request
->fl_flags
= fl_flags
| FL_SLEEP
;
3538 if (do_vfs_lock(request
->fl_file
, request
) < 0)
3539 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __FUNCTION__
);
3541 up_read(&clp
->cl_sem
);
3543 request
->fl_flags
= fl_flags
;
3547 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3549 struct nfs4_exception exception
= { };
3553 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3554 _nfs4_proc_setlk(state
, cmd
, request
),
3556 } while (exception
.retry
);
3561 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
3563 struct nfs_open_context
*ctx
;
3564 struct nfs4_state
*state
;
3565 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
3568 /* verify open state */
3569 ctx
= nfs_file_open_context(filp
);
3572 if (request
->fl_start
< 0 || request
->fl_end
< 0)
3576 return nfs4_proc_getlk(state
, F_GETLK
, request
);
3578 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
3581 if (request
->fl_type
== F_UNLCK
)
3582 return nfs4_proc_unlck(state
, cmd
, request
);
3585 status
= nfs4_proc_setlk(state
, cmd
, request
);
3586 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
3588 timeout
= nfs4_set_lock_task_retry(timeout
);
3589 status
= -ERESTARTSYS
;
3592 } while(status
< 0);
3596 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
3598 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3599 struct nfs4_exception exception
= { };
3602 err
= nfs4_set_lock_state(state
, fl
);
3606 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
3607 if (err
!= -NFS4ERR_DELAY
)
3609 err
= nfs4_handle_exception(server
, err
, &exception
);
3610 } while (exception
.retry
);
3615 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
3617 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
3618 size_t buflen
, int flags
)
3620 struct inode
*inode
= dentry
->d_inode
;
3622 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3625 if (!S_ISREG(inode
->i_mode
) &&
3626 (!S_ISDIR(inode
->i_mode
) || inode
->i_mode
& S_ISVTX
))
3629 return nfs4_proc_set_acl(inode
, buf
, buflen
);
3632 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
3633 * and that's what we'll do for e.g. user attributes that haven't been set.
3634 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
3635 * attributes in kernel-managed attribute namespaces. */
3636 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
3639 struct inode
*inode
= dentry
->d_inode
;
3641 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3644 return nfs4_proc_get_acl(inode
, buf
, buflen
);
3647 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
3649 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
3651 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
3653 if (buf
&& buflen
< len
)
3656 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
3660 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
3661 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
3663 struct nfs_server
*server
= NFS_SERVER(dir
);
3665 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
3666 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
3668 struct nfs4_fs_locations_arg args
= {
3669 .dir_fh
= NFS_FH(dir
),
3674 struct rpc_message msg
= {
3675 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
3677 .rpc_resp
= fs_locations
,
3681 dprintk("%s: start\n", __FUNCTION__
);
3682 nfs_fattr_init(&fs_locations
->fattr
);
3683 fs_locations
->server
= server
;
3684 fs_locations
->nlocations
= 0;
3685 status
= rpc_call_sync(server
->client
, &msg
, 0);
3686 dprintk("%s: returned status = %d\n", __FUNCTION__
, status
);
3690 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops
= {
3691 .recover_open
= nfs4_open_reclaim
,
3692 .recover_lock
= nfs4_lock_reclaim
,
3695 struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops
= {
3696 .recover_open
= nfs4_open_expired
,
3697 .recover_lock
= nfs4_lock_expired
,
3700 static const struct inode_operations nfs4_file_inode_operations
= {
3701 .permission
= nfs_permission
,
3702 .getattr
= nfs_getattr
,
3703 .setattr
= nfs_setattr
,
3704 .getxattr
= nfs4_getxattr
,
3705 .setxattr
= nfs4_setxattr
,
3706 .listxattr
= nfs4_listxattr
,
3709 const struct nfs_rpc_ops nfs_v4_clientops
= {
3710 .version
= 4, /* protocol version */
3711 .dentry_ops
= &nfs4_dentry_operations
,
3712 .dir_inode_ops
= &nfs4_dir_inode_operations
,
3713 .file_inode_ops
= &nfs4_file_inode_operations
,
3714 .getroot
= nfs4_proc_get_root
,
3715 .getattr
= nfs4_proc_getattr
,
3716 .setattr
= nfs4_proc_setattr
,
3717 .lookupfh
= nfs4_proc_lookupfh
,
3718 .lookup
= nfs4_proc_lookup
,
3719 .access
= nfs4_proc_access
,
3720 .readlink
= nfs4_proc_readlink
,
3721 .create
= nfs4_proc_create
,
3722 .remove
= nfs4_proc_remove
,
3723 .unlink_setup
= nfs4_proc_unlink_setup
,
3724 .unlink_done
= nfs4_proc_unlink_done
,
3725 .rename
= nfs4_proc_rename
,
3726 .link
= nfs4_proc_link
,
3727 .symlink
= nfs4_proc_symlink
,
3728 .mkdir
= nfs4_proc_mkdir
,
3729 .rmdir
= nfs4_proc_remove
,
3730 .readdir
= nfs4_proc_readdir
,
3731 .mknod
= nfs4_proc_mknod
,
3732 .statfs
= nfs4_proc_statfs
,
3733 .fsinfo
= nfs4_proc_fsinfo
,
3734 .pathconf
= nfs4_proc_pathconf
,
3735 .set_capabilities
= nfs4_server_capabilities
,
3736 .decode_dirent
= nfs4_decode_dirent
,
3737 .read_setup
= nfs4_proc_read_setup
,
3738 .read_done
= nfs4_read_done
,
3739 .write_setup
= nfs4_proc_write_setup
,
3740 .write_done
= nfs4_write_done
,
3741 .commit_setup
= nfs4_proc_commit_setup
,
3742 .commit_done
= nfs4_commit_done
,
3743 .file_open
= nfs_open
,
3744 .file_release
= nfs_release
,
3745 .lock
= nfs4_proc_lock
,
3746 .clear_acl_cache
= nfs4_zap_acl_attr
,