4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/utsname.h>
40 #include <linux/delay.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/sunrpc/clnt.h>
44 #include <linux/nfs.h>
45 #include <linux/nfs4.h>
46 #include <linux/nfs_fs.h>
47 #include <linux/nfs_page.h>
48 #include <linux/smp_lock.h>
49 #include <linux/namei.h>
50 #include <linux/mount.h>
53 #include "delegation.h"
57 #define NFSDBG_FACILITY NFSDBG_PROC
59 #define NFS4_POLL_RETRY_MIN (HZ/10)
60 #define NFS4_POLL_RETRY_MAX (15*HZ)
63 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
64 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
65 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*);
66 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
);
67 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
);
68 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
69 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
71 /* Prevent leaks of NFSv4 errors into userland */
72 int nfs4_map_errors(int err
)
75 dprintk("%s could not handle NFSv4 error %d\n",
83 * This is our standard bitmap for GETATTR requests.
85 const u32 nfs4_fattr_bitmap
[2] = {
90 | FATTR4_WORD0_FILEID
,
92 | FATTR4_WORD1_NUMLINKS
94 | FATTR4_WORD1_OWNER_GROUP
96 | FATTR4_WORD1_SPACE_USED
97 | FATTR4_WORD1_TIME_ACCESS
98 | FATTR4_WORD1_TIME_METADATA
99 | FATTR4_WORD1_TIME_MODIFY
102 const u32 nfs4_statfs_bitmap
[2] = {
103 FATTR4_WORD0_FILES_AVAIL
104 | FATTR4_WORD0_FILES_FREE
105 | FATTR4_WORD0_FILES_TOTAL
,
106 FATTR4_WORD1_SPACE_AVAIL
107 | FATTR4_WORD1_SPACE_FREE
108 | FATTR4_WORD1_SPACE_TOTAL
111 const u32 nfs4_pathconf_bitmap
[2] = {
113 | FATTR4_WORD0_MAXNAME
,
117 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
118 | FATTR4_WORD0_MAXREAD
119 | FATTR4_WORD0_MAXWRITE
120 | FATTR4_WORD0_LEASE_TIME
,
124 const u32 nfs4_fs_locations_bitmap
[2] = {
126 | FATTR4_WORD0_CHANGE
129 | FATTR4_WORD0_FILEID
130 | FATTR4_WORD0_FS_LOCATIONS
,
132 | FATTR4_WORD1_NUMLINKS
134 | FATTR4_WORD1_OWNER_GROUP
135 | FATTR4_WORD1_RAWDEV
136 | FATTR4_WORD1_SPACE_USED
137 | FATTR4_WORD1_TIME_ACCESS
138 | FATTR4_WORD1_TIME_METADATA
139 | FATTR4_WORD1_TIME_MODIFY
140 | FATTR4_WORD1_MOUNTED_ON_FILEID
143 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
144 struct nfs4_readdir_arg
*readdir
)
148 BUG_ON(readdir
->count
< 80);
150 readdir
->cookie
= cookie
;
151 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
156 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
161 * NFSv4 servers do not return entries for '.' and '..'
162 * Therefore, we fake these entries here. We let '.'
163 * have cookie 0 and '..' have cookie 1. Note that
164 * when talking to the server, we always send cookie 0
167 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
170 *p
++ = xdr_one
; /* next */
171 *p
++ = xdr_zero
; /* cookie, first word */
172 *p
++ = xdr_one
; /* cookie, second word */
173 *p
++ = xdr_one
; /* entry len */
174 memcpy(p
, ".\0\0\0", 4); /* entry */
176 *p
++ = xdr_one
; /* bitmap length */
177 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
178 *p
++ = htonl(8); /* attribute buffer length */
179 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
182 *p
++ = xdr_one
; /* next */
183 *p
++ = xdr_zero
; /* cookie, first word */
184 *p
++ = xdr_two
; /* cookie, second word */
185 *p
++ = xdr_two
; /* entry len */
186 memcpy(p
, "..\0\0", 4); /* entry */
188 *p
++ = xdr_one
; /* bitmap length */
189 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
190 *p
++ = htonl(8); /* attribute buffer length */
191 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
193 readdir
->pgbase
= (char *)p
- (char *)start
;
194 readdir
->count
-= readdir
->pgbase
;
195 kunmap_atomic(start
, KM_USER0
);
198 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
200 struct nfs_client
*clp
= server
->nfs_client
;
201 spin_lock(&clp
->cl_lock
);
202 if (time_before(clp
->cl_last_renewal
,timestamp
))
203 clp
->cl_last_renewal
= timestamp
;
204 spin_unlock(&clp
->cl_lock
);
207 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
209 struct nfs_inode
*nfsi
= NFS_I(dir
);
211 spin_lock(&dir
->i_lock
);
212 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
213 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
214 nfs_force_lookup_revalidate(dir
);
215 nfsi
->change_attr
= cinfo
->after
;
216 spin_unlock(&dir
->i_lock
);
219 struct nfs4_opendata
{
221 struct nfs_openargs o_arg
;
222 struct nfs_openres o_res
;
223 struct nfs_open_confirmargs c_arg
;
224 struct nfs_open_confirmres c_res
;
225 struct nfs_fattr f_attr
;
226 struct nfs_fattr dir_attr
;
229 struct nfs4_state_owner
*owner
;
230 struct nfs4_state
*state
;
232 unsigned long timestamp
;
233 unsigned int rpc_done
: 1;
239 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
241 p
->o_res
.f_attr
= &p
->f_attr
;
242 p
->o_res
.dir_attr
= &p
->dir_attr
;
243 p
->o_res
.server
= p
->o_arg
.server
;
244 nfs_fattr_init(&p
->f_attr
);
245 nfs_fattr_init(&p
->dir_attr
);
248 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
249 struct nfs4_state_owner
*sp
, int flags
,
250 const struct iattr
*attrs
)
252 struct dentry
*parent
= dget_parent(path
->dentry
);
253 struct inode
*dir
= parent
->d_inode
;
254 struct nfs_server
*server
= NFS_SERVER(dir
);
255 struct nfs4_opendata
*p
;
257 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
260 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
261 if (p
->o_arg
.seqid
== NULL
)
263 p
->path
.mnt
= mntget(path
->mnt
);
264 p
->path
.dentry
= dget(path
->dentry
);
267 atomic_inc(&sp
->so_count
);
268 p
->o_arg
.fh
= NFS_FH(dir
);
269 p
->o_arg
.open_flags
= flags
,
270 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
271 p
->o_arg
.id
= sp
->so_owner_id
.id
;
272 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
273 p
->o_arg
.server
= server
;
274 p
->o_arg
.bitmask
= server
->attr_bitmask
;
275 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
276 if (flags
& O_EXCL
) {
277 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
280 } else if (flags
& O_CREAT
) {
281 p
->o_arg
.u
.attrs
= &p
->attrs
;
282 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
284 p
->c_arg
.fh
= &p
->o_res
.fh
;
285 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
286 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
287 nfs4_init_opendata_res(p
);
297 static void nfs4_opendata_free(struct kref
*kref
)
299 struct nfs4_opendata
*p
= container_of(kref
,
300 struct nfs4_opendata
, kref
);
302 nfs_free_seqid(p
->o_arg
.seqid
);
303 if (p
->state
!= NULL
)
304 nfs4_put_open_state(p
->state
);
305 nfs4_put_state_owner(p
->owner
);
307 dput(p
->path
.dentry
);
312 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
315 kref_put(&p
->kref
, nfs4_opendata_free
);
318 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
322 ret
= rpc_wait_for_completion_task(task
);
326 static int can_open_cached(struct nfs4_state
*state
, int mode
)
329 switch (mode
& (FMODE_READ
|FMODE_WRITE
|O_EXCL
)) {
331 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0;
334 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0;
336 case FMODE_READ
|FMODE_WRITE
:
337 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0;
342 static int can_open_delegated(struct nfs_delegation
*delegation
, mode_t open_flags
)
344 if ((delegation
->type
& open_flags
) != open_flags
)
346 if (delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)
351 static void update_open_stateflags(struct nfs4_state
*state
, mode_t open_flags
)
353 switch (open_flags
) {
360 case FMODE_READ
|FMODE_WRITE
:
363 nfs4_state_set_mode_locked(state
, state
->state
| open_flags
);
366 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, int open_flags
)
368 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
369 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
370 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
371 switch (open_flags
) {
373 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
376 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
378 case FMODE_READ
|FMODE_WRITE
:
379 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
383 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, int open_flags
)
385 write_seqlock(&state
->seqlock
);
386 nfs_set_open_stateid_locked(state
, stateid
, open_flags
);
387 write_sequnlock(&state
->seqlock
);
390 static void update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*deleg_stateid
, int open_flags
)
392 open_flags
&= (FMODE_READ
|FMODE_WRITE
);
394 * Protect the call to nfs4_state_set_mode_locked and
395 * serialise the stateid update
397 write_seqlock(&state
->seqlock
);
398 if (deleg_stateid
!= NULL
) {
399 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
400 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
402 if (open_stateid
!= NULL
)
403 nfs_set_open_stateid_locked(state
, open_stateid
, open_flags
);
404 write_sequnlock(&state
->seqlock
);
405 spin_lock(&state
->owner
->so_lock
);
406 update_open_stateflags(state
, open_flags
);
407 spin_unlock(&state
->owner
->so_lock
);
410 static void nfs4_return_incompatible_delegation(struct inode
*inode
, mode_t open_flags
)
412 struct nfs_delegation
*delegation
;
415 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
416 if (delegation
== NULL
|| (delegation
->type
& open_flags
) == open_flags
) {
421 nfs_inode_return_delegation(inode
);
424 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
426 struct nfs4_state
*state
= opendata
->state
;
427 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
428 struct nfs_delegation
*delegation
;
429 int open_mode
= opendata
->o_arg
.open_flags
& (FMODE_READ
|FMODE_WRITE
|O_EXCL
);
430 nfs4_stateid stateid
;
434 delegation
= rcu_dereference(nfsi
->delegation
);
436 if (can_open_cached(state
, open_mode
)) {
437 spin_lock(&state
->owner
->so_lock
);
438 if (can_open_cached(state
, open_mode
)) {
439 update_open_stateflags(state
, open_mode
);
440 spin_unlock(&state
->owner
->so_lock
);
442 goto out_return_state
;
444 spin_unlock(&state
->owner
->so_lock
);
446 if (delegation
== NULL
)
448 if (!can_open_delegated(delegation
, open_mode
))
450 /* Save the delegation */
451 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
454 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
460 delegation
= rcu_dereference(nfsi
->delegation
);
461 /* If no delegation, try a cached open */
462 if (delegation
== NULL
)
464 /* Is the delegation still valid? */
465 if (memcmp(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
)) != 0)
468 update_open_stateid(state
, NULL
, &stateid
, open_mode
);
469 goto out_return_state
;
475 atomic_inc(&state
->count
);
479 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
482 struct nfs4_state
*state
= NULL
;
483 struct nfs_delegation
*delegation
;
484 nfs4_stateid
*deleg_stateid
= NULL
;
487 if (!data
->rpc_done
) {
488 state
= nfs4_try_open_cached(data
);
493 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
495 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
496 ret
= PTR_ERR(inode
);
500 state
= nfs4_get_open_state(inode
, data
->owner
);
503 if (data
->o_res
.delegation_type
!= 0) {
504 int delegation_flags
= 0;
507 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
509 delegation_flags
= delegation
->flags
;
511 if (!(delegation_flags
& NFS_DELEGATION_NEED_RECLAIM
))
512 nfs_inode_set_delegation(state
->inode
,
513 data
->owner
->so_cred
,
516 nfs_inode_reclaim_delegation(state
->inode
,
517 data
->owner
->so_cred
,
521 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
522 if (delegation
!= NULL
)
523 deleg_stateid
= &delegation
->stateid
;
524 update_open_stateid(state
, &data
->o_res
.stateid
, deleg_stateid
, data
->o_arg
.open_flags
);
535 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
537 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
538 struct nfs_open_context
*ctx
;
540 spin_lock(&state
->inode
->i_lock
);
541 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
542 if (ctx
->state
!= state
)
544 get_nfs_open_context(ctx
);
545 spin_unlock(&state
->inode
->i_lock
);
548 spin_unlock(&state
->inode
->i_lock
);
549 return ERR_PTR(-ENOENT
);
552 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
554 struct nfs4_opendata
*opendata
;
556 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, NULL
);
557 if (opendata
== NULL
)
558 return ERR_PTR(-ENOMEM
);
559 opendata
->state
= state
;
560 atomic_inc(&state
->count
);
564 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, mode_t openflags
, struct nfs4_state
**res
)
566 struct nfs4_state
*newstate
;
569 opendata
->o_arg
.open_flags
= openflags
;
570 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
571 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
572 nfs4_init_opendata_res(opendata
);
573 ret
= _nfs4_proc_open(opendata
);
576 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
577 if (IS_ERR(newstate
))
578 return PTR_ERR(newstate
);
579 nfs4_close_state(&opendata
->path
, newstate
, openflags
);
584 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
586 struct nfs4_state
*newstate
;
589 /* memory barrier prior to reading state->n_* */
590 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
592 if (state
->n_rdwr
!= 0) {
593 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
596 if (newstate
!= state
)
599 if (state
->n_wronly
!= 0) {
600 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
603 if (newstate
!= state
)
606 if (state
->n_rdonly
!= 0) {
607 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
610 if (newstate
!= state
)
614 * We may have performed cached opens for all three recoveries.
615 * Check if we need to update the current stateid.
617 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
618 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
619 write_seqlock(&state
->seqlock
);
620 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
621 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
622 write_sequnlock(&state
->seqlock
);
629 * reclaim state on the server after a reboot.
631 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
633 struct nfs_delegation
*delegation
;
634 struct nfs4_opendata
*opendata
;
635 int delegation_type
= 0;
638 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
639 if (IS_ERR(opendata
))
640 return PTR_ERR(opendata
);
641 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
642 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
644 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
645 if (delegation
!= NULL
&& (delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
) != 0)
646 delegation_type
= delegation
->type
;
648 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
649 status
= nfs4_open_recover(opendata
, state
);
650 nfs4_opendata_put(opendata
);
654 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
656 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
657 struct nfs4_exception exception
= { };
660 err
= _nfs4_do_open_reclaim(ctx
, state
);
661 if (err
!= -NFS4ERR_DELAY
)
663 nfs4_handle_exception(server
, err
, &exception
);
664 } while (exception
.retry
);
668 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
670 struct nfs_open_context
*ctx
;
673 ctx
= nfs4_state_find_open_context(state
);
676 ret
= nfs4_do_open_reclaim(ctx
, state
);
677 put_nfs_open_context(ctx
);
681 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
683 struct nfs4_opendata
*opendata
;
686 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
687 if (IS_ERR(opendata
))
688 return PTR_ERR(opendata
);
689 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
690 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
691 sizeof(opendata
->o_arg
.u
.delegation
.data
));
692 ret
= nfs4_open_recover(opendata
, state
);
693 nfs4_opendata_put(opendata
);
697 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
699 struct nfs4_exception exception
= { };
700 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
703 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
707 case -NFS4ERR_STALE_CLIENTID
:
708 case -NFS4ERR_STALE_STATEID
:
709 case -NFS4ERR_EXPIRED
:
710 /* Don't recall a delegation if it was lost */
711 nfs4_schedule_state_recovery(server
->nfs_client
);
714 err
= nfs4_handle_exception(server
, err
, &exception
);
715 } while (exception
.retry
);
719 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
721 struct nfs4_opendata
*data
= calldata
;
723 data
->rpc_status
= task
->tk_status
;
724 if (RPC_ASSASSINATED(task
))
726 if (data
->rpc_status
== 0) {
727 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
728 sizeof(data
->o_res
.stateid
.data
));
729 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
730 renew_lease(data
->o_res
.server
, data
->timestamp
);
733 nfs_increment_open_seqid(data
->rpc_status
, data
->c_arg
.seqid
);
736 static void nfs4_open_confirm_release(void *calldata
)
738 struct nfs4_opendata
*data
= calldata
;
739 struct nfs4_state
*state
= NULL
;
741 /* If this request hasn't been cancelled, do nothing */
742 if (data
->cancelled
== 0)
744 /* In case of error, no cleanup! */
747 state
= nfs4_opendata_to_nfs4_state(data
);
749 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
751 nfs4_opendata_put(data
);
754 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
755 .rpc_call_done
= nfs4_open_confirm_done
,
756 .rpc_release
= nfs4_open_confirm_release
,
760 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
762 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
764 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
765 struct rpc_task
*task
;
766 struct rpc_message msg
= {
767 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
768 .rpc_argp
= &data
->c_arg
,
769 .rpc_resp
= &data
->c_res
,
770 .rpc_cred
= data
->owner
->so_cred
,
772 struct rpc_task_setup task_setup_data
= {
773 .rpc_client
= server
->client
,
775 .callback_ops
= &nfs4_open_confirm_ops
,
776 .callback_data
= data
,
777 .workqueue
= nfsiod_workqueue
,
778 .flags
= RPC_TASK_ASYNC
,
782 kref_get(&data
->kref
);
784 data
->rpc_status
= 0;
785 data
->timestamp
= jiffies
;
786 task
= rpc_run_task(&task_setup_data
);
788 return PTR_ERR(task
);
789 status
= nfs4_wait_for_completion_rpc_task(task
);
794 status
= data
->rpc_status
;
799 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
801 struct nfs4_opendata
*data
= calldata
;
802 struct nfs4_state_owner
*sp
= data
->owner
;
804 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
807 * Check if we still need to send an OPEN call, or if we can use
808 * a delegation instead.
810 if (data
->state
!= NULL
) {
811 struct nfs_delegation
*delegation
;
813 if (can_open_cached(data
->state
, data
->o_arg
.open_flags
& (FMODE_READ
|FMODE_WRITE
|O_EXCL
)))
816 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
817 if (delegation
!= NULL
&&
818 (delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
) == 0) {
824 /* Update sequence id. */
825 data
->o_arg
.id
= sp
->so_owner_id
.id
;
826 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
827 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
828 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
829 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
831 data
->timestamp
= jiffies
;
832 rpc_call_start(task
);
835 task
->tk_action
= NULL
;
839 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
841 struct nfs4_opendata
*data
= calldata
;
843 data
->rpc_status
= task
->tk_status
;
844 if (RPC_ASSASSINATED(task
))
846 if (task
->tk_status
== 0) {
847 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
851 data
->rpc_status
= -ELOOP
;
854 data
->rpc_status
= -EISDIR
;
857 data
->rpc_status
= -ENOTDIR
;
859 renew_lease(data
->o_res
.server
, data
->timestamp
);
860 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
861 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
863 nfs_increment_open_seqid(data
->rpc_status
, data
->o_arg
.seqid
);
867 static void nfs4_open_release(void *calldata
)
869 struct nfs4_opendata
*data
= calldata
;
870 struct nfs4_state
*state
= NULL
;
872 /* If this request hasn't been cancelled, do nothing */
873 if (data
->cancelled
== 0)
875 /* In case of error, no cleanup! */
876 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
878 /* In case we need an open_confirm, no cleanup! */
879 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
881 state
= nfs4_opendata_to_nfs4_state(data
);
883 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
885 nfs4_opendata_put(data
);
888 static const struct rpc_call_ops nfs4_open_ops
= {
889 .rpc_call_prepare
= nfs4_open_prepare
,
890 .rpc_call_done
= nfs4_open_done
,
891 .rpc_release
= nfs4_open_release
,
895 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
897 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
899 struct inode
*dir
= data
->dir
->d_inode
;
900 struct nfs_server
*server
= NFS_SERVER(dir
);
901 struct nfs_openargs
*o_arg
= &data
->o_arg
;
902 struct nfs_openres
*o_res
= &data
->o_res
;
903 struct rpc_task
*task
;
904 struct rpc_message msg
= {
905 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
908 .rpc_cred
= data
->owner
->so_cred
,
910 struct rpc_task_setup task_setup_data
= {
911 .rpc_client
= server
->client
,
913 .callback_ops
= &nfs4_open_ops
,
914 .callback_data
= data
,
915 .workqueue
= nfsiod_workqueue
,
916 .flags
= RPC_TASK_ASYNC
,
920 kref_get(&data
->kref
);
922 data
->rpc_status
= 0;
924 task
= rpc_run_task(&task_setup_data
);
926 return PTR_ERR(task
);
927 status
= nfs4_wait_for_completion_rpc_task(task
);
932 status
= data
->rpc_status
;
934 if (status
!= 0 || !data
->rpc_done
)
937 if (o_res
->fh
.size
== 0)
938 _nfs4_proc_lookup(dir
, o_arg
->name
, &o_res
->fh
, o_res
->f_attr
);
940 if (o_arg
->open_flags
& O_CREAT
) {
941 update_changeattr(dir
, &o_res
->cinfo
);
942 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
944 nfs_refresh_inode(dir
, o_res
->dir_attr
);
945 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
946 status
= _nfs4_proc_open_confirm(data
);
950 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
951 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
955 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
957 struct nfs_client
*clp
= server
->nfs_client
;
961 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
964 if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
))
966 nfs4_schedule_state_recovery(clp
);
973 * reclaim state on the server after a network partition.
974 * Assumes caller holds the appropriate lock
976 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
978 struct nfs4_opendata
*opendata
;
981 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
982 if (IS_ERR(opendata
))
983 return PTR_ERR(opendata
);
984 ret
= nfs4_open_recover(opendata
, state
);
985 if (ret
== -ESTALE
) {
986 /* Invalidate the state owner so we don't ever use it again */
987 nfs4_drop_state_owner(state
->owner
);
988 d_drop(ctx
->path
.dentry
);
990 nfs4_opendata_put(opendata
);
994 static inline int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
996 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
997 struct nfs4_exception exception
= { };
1001 err
= _nfs4_open_expired(ctx
, state
);
1002 if (err
== -NFS4ERR_DELAY
)
1003 nfs4_handle_exception(server
, err
, &exception
);
1004 } while (exception
.retry
);
1008 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1010 struct nfs_open_context
*ctx
;
1013 ctx
= nfs4_state_find_open_context(state
);
1015 return PTR_ERR(ctx
);
1016 ret
= nfs4_do_open_expired(ctx
, state
);
1017 put_nfs_open_context(ctx
);
1022 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1023 * fields corresponding to attributes that were used to store the verifier.
1024 * Make sure we clobber those fields in the later setattr call
1026 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1028 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1029 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1030 sattr
->ia_valid
|= ATTR_ATIME
;
1032 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1033 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1034 sattr
->ia_valid
|= ATTR_MTIME
;
1038 * Returns a referenced nfs4_state
1040 static int _nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
1042 struct nfs4_state_owner
*sp
;
1043 struct nfs4_state
*state
= NULL
;
1044 struct nfs_server
*server
= NFS_SERVER(dir
);
1045 struct nfs_client
*clp
= server
->nfs_client
;
1046 struct nfs4_opendata
*opendata
;
1049 /* Protect against reboot recovery conflicts */
1051 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1052 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1055 status
= nfs4_recover_expired_lease(server
);
1057 goto err_put_state_owner
;
1058 if (path
->dentry
->d_inode
!= NULL
)
1059 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, flags
& (FMODE_READ
|FMODE_WRITE
));
1060 down_read(&clp
->cl_sem
);
1062 opendata
= nfs4_opendata_alloc(path
, sp
, flags
, sattr
);
1063 if (opendata
== NULL
)
1064 goto err_release_rwsem
;
1066 if (path
->dentry
->d_inode
!= NULL
)
1067 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1069 status
= _nfs4_proc_open(opendata
);
1071 goto err_opendata_put
;
1073 if (opendata
->o_arg
.open_flags
& O_EXCL
)
1074 nfs4_exclusive_attrset(opendata
, sattr
);
1076 state
= nfs4_opendata_to_nfs4_state(opendata
);
1077 status
= PTR_ERR(state
);
1079 goto err_opendata_put
;
1080 nfs4_opendata_put(opendata
);
1081 nfs4_put_state_owner(sp
);
1082 up_read(&clp
->cl_sem
);
1086 nfs4_opendata_put(opendata
);
1088 up_read(&clp
->cl_sem
);
1089 err_put_state_owner
:
1090 nfs4_put_state_owner(sp
);
1097 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1099 struct nfs4_exception exception
= { };
1100 struct nfs4_state
*res
;
1104 status
= _nfs4_do_open(dir
, path
, flags
, sattr
, cred
, &res
);
1107 /* NOTE: BAD_SEQID means the server and client disagree about the
1108 * book-keeping w.r.t. state-changing operations
1109 * (OPEN/CLOSE/LOCK/LOCKU...)
1110 * It is actually a sign of a bug on the client or on the server.
1112 * If we receive a BAD_SEQID error in the particular case of
1113 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1114 * have unhashed the old state_owner for us, and that we can
1115 * therefore safely retry using a new one. We should still warn
1116 * the user though...
1118 if (status
== -NFS4ERR_BAD_SEQID
) {
1119 printk(KERN_WARNING
"NFS: v4 server %s "
1120 " returned a bad sequence-id error!\n",
1121 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1122 exception
.retry
= 1;
1126 * BAD_STATEID on OPEN means that the server cancelled our
1127 * state before it received the OPEN_CONFIRM.
1128 * Recover by retrying the request as per the discussion
1129 * on Page 181 of RFC3530.
1131 if (status
== -NFS4ERR_BAD_STATEID
) {
1132 exception
.retry
= 1;
1135 if (status
== -EAGAIN
) {
1136 /* We must have found a delegation */
1137 exception
.retry
= 1;
1140 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1141 status
, &exception
));
1142 } while (exception
.retry
);
1146 static int _nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1147 struct iattr
*sattr
, struct nfs4_state
*state
)
1149 struct nfs_server
*server
= NFS_SERVER(inode
);
1150 struct nfs_setattrargs arg
= {
1151 .fh
= NFS_FH(inode
),
1154 .bitmask
= server
->attr_bitmask
,
1156 struct nfs_setattrres res
= {
1160 struct rpc_message msg
= {
1161 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1165 unsigned long timestamp
= jiffies
;
1168 nfs_fattr_init(fattr
);
1170 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1171 /* Use that stateid */
1172 } else if (state
!= NULL
) {
1173 msg
.rpc_cred
= state
->owner
->so_cred
;
1174 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1176 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1178 status
= rpc_call_sync(server
->client
, &msg
, 0);
1179 if (status
== 0 && state
!= NULL
)
1180 renew_lease(server
, timestamp
);
1184 static int nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1185 struct iattr
*sattr
, struct nfs4_state
*state
)
1187 struct nfs_server
*server
= NFS_SERVER(inode
);
1188 struct nfs4_exception exception
= { };
1191 err
= nfs4_handle_exception(server
,
1192 _nfs4_do_setattr(inode
, fattr
, sattr
, state
),
1194 } while (exception
.retry
);
1198 struct nfs4_closedata
{
1200 struct inode
*inode
;
1201 struct nfs4_state
*state
;
1202 struct nfs_closeargs arg
;
1203 struct nfs_closeres res
;
1204 struct nfs_fattr fattr
;
1205 unsigned long timestamp
;
1208 static void nfs4_free_closedata(void *data
)
1210 struct nfs4_closedata
*calldata
= data
;
1211 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1213 nfs4_put_open_state(calldata
->state
);
1214 nfs_free_seqid(calldata
->arg
.seqid
);
1215 nfs4_put_state_owner(sp
);
1216 dput(calldata
->path
.dentry
);
1217 mntput(calldata
->path
.mnt
);
1221 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1223 struct nfs4_closedata
*calldata
= data
;
1224 struct nfs4_state
*state
= calldata
->state
;
1225 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1227 if (RPC_ASSASSINATED(task
))
1229 /* hmm. we are done with the inode, and in the process of freeing
1230 * the state_owner. we keep this around to process errors
1232 nfs_increment_open_seqid(task
->tk_status
, calldata
->arg
.seqid
);
1233 switch (task
->tk_status
) {
1235 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1236 renew_lease(server
, calldata
->timestamp
);
1238 case -NFS4ERR_STALE_STATEID
:
1239 case -NFS4ERR_EXPIRED
:
1242 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
1243 rpc_restart_call(task
);
1247 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1250 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1252 struct nfs4_closedata
*calldata
= data
;
1253 struct nfs4_state
*state
= calldata
->state
;
1254 int clear_rd
, clear_wr
, clear_rdwr
;
1256 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1259 clear_rd
= clear_wr
= clear_rdwr
= 0;
1260 spin_lock(&state
->owner
->so_lock
);
1261 /* Calculate the change in open mode */
1262 if (state
->n_rdwr
== 0) {
1263 if (state
->n_rdonly
== 0) {
1264 clear_rd
|= test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1265 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1267 if (state
->n_wronly
== 0) {
1268 clear_wr
|= test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1269 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1272 spin_unlock(&state
->owner
->so_lock
);
1273 if (!clear_rd
&& !clear_wr
&& !clear_rdwr
) {
1274 /* Note: exit _without_ calling nfs4_close_done */
1275 task
->tk_action
= NULL
;
1278 nfs_fattr_init(calldata
->res
.fattr
);
1279 if (test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0) {
1280 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1281 calldata
->arg
.open_flags
= FMODE_READ
;
1282 } else if (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0) {
1283 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1284 calldata
->arg
.open_flags
= FMODE_WRITE
;
1286 calldata
->timestamp
= jiffies
;
1287 rpc_call_start(task
);
1290 static const struct rpc_call_ops nfs4_close_ops
= {
1291 .rpc_call_prepare
= nfs4_close_prepare
,
1292 .rpc_call_done
= nfs4_close_done
,
1293 .rpc_release
= nfs4_free_closedata
,
1297 * It is possible for data to be read/written from a mem-mapped file
1298 * after the sys_close call (which hits the vfs layer as a flush).
1299 * This means that we can't safely call nfsv4 close on a file until
1300 * the inode is cleared. This in turn means that we are not good
1301 * NFSv4 citizens - we do not indicate to the server to update the file's
1302 * share state even when we are done with one of the three share
1303 * stateid's in the inode.
1305 * NOTE: Caller must be holding the sp->so_owner semaphore!
1307 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, int wait
)
1309 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1310 struct nfs4_closedata
*calldata
;
1311 struct nfs4_state_owner
*sp
= state
->owner
;
1312 struct rpc_task
*task
;
1313 struct rpc_message msg
= {
1314 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1315 .rpc_cred
= state
->owner
->so_cred
,
1317 struct rpc_task_setup task_setup_data
= {
1318 .rpc_client
= server
->client
,
1319 .rpc_message
= &msg
,
1320 .callback_ops
= &nfs4_close_ops
,
1321 .workqueue
= nfsiod_workqueue
,
1322 .flags
= RPC_TASK_ASYNC
,
1324 int status
= -ENOMEM
;
1326 calldata
= kmalloc(sizeof(*calldata
), GFP_KERNEL
);
1327 if (calldata
== NULL
)
1329 calldata
->inode
= state
->inode
;
1330 calldata
->state
= state
;
1331 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1332 calldata
->arg
.stateid
= &state
->open_stateid
;
1333 /* Serialization for the sequence id */
1334 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1335 if (calldata
->arg
.seqid
== NULL
)
1336 goto out_free_calldata
;
1337 calldata
->arg
.bitmask
= server
->attr_bitmask
;
1338 calldata
->res
.fattr
= &calldata
->fattr
;
1339 calldata
->res
.server
= server
;
1340 calldata
->path
.mnt
= mntget(path
->mnt
);
1341 calldata
->path
.dentry
= dget(path
->dentry
);
1343 msg
.rpc_argp
= &calldata
->arg
,
1344 msg
.rpc_resp
= &calldata
->res
,
1345 task_setup_data
.callback_data
= calldata
;
1346 task
= rpc_run_task(&task_setup_data
);
1348 return PTR_ERR(task
);
1351 status
= rpc_wait_for_completion_task(task
);
1357 nfs4_put_open_state(state
);
1358 nfs4_put_state_owner(sp
);
1362 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
)
1367 /* If the open_intent is for execute, we have an extra check to make */
1368 if (nd
->intent
.open
.flags
& FMODE_EXEC
) {
1369 ret
= nfs_may_open(state
->inode
,
1370 state
->owner
->so_cred
,
1371 nd
->intent
.open
.flags
);
1375 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1376 if (!IS_ERR(filp
)) {
1377 struct nfs_open_context
*ctx
;
1378 ctx
= nfs_file_open_context(filp
);
1382 ret
= PTR_ERR(filp
);
1384 nfs4_close_sync(path
, state
, nd
->intent
.open
.flags
);
1389 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1391 struct path path
= {
1392 .mnt
= nd
->path
.mnt
,
1395 struct dentry
*parent
;
1397 struct rpc_cred
*cred
;
1398 struct nfs4_state
*state
;
1401 if (nd
->flags
& LOOKUP_CREATE
) {
1402 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1403 attr
.ia_valid
= ATTR_MODE
;
1404 if (!IS_POSIXACL(dir
))
1405 attr
.ia_mode
&= ~current
->fs
->umask
;
1408 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1411 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1413 return (struct dentry
*)cred
;
1414 parent
= dentry
->d_parent
;
1415 /* Protect against concurrent sillydeletes */
1416 nfs_block_sillyrename(parent
);
1417 state
= nfs4_do_open(dir
, &path
, nd
->intent
.open
.flags
, &attr
, cred
);
1419 if (IS_ERR(state
)) {
1420 if (PTR_ERR(state
) == -ENOENT
) {
1421 d_add(dentry
, NULL
);
1422 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1424 nfs_unblock_sillyrename(parent
);
1425 return (struct dentry
*)state
;
1427 res
= d_add_unique(dentry
, igrab(state
->inode
));
1430 nfs_set_verifier(path
.dentry
, nfs_save_change_attribute(dir
));
1431 nfs_unblock_sillyrename(parent
);
1432 nfs4_intent_set_file(nd
, &path
, state
);
1437 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1439 struct path path
= {
1440 .mnt
= nd
->path
.mnt
,
1443 struct rpc_cred
*cred
;
1444 struct nfs4_state
*state
;
1446 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1448 return PTR_ERR(cred
);
1449 state
= nfs4_do_open(dir
, &path
, openflags
, NULL
, cred
);
1451 if (IS_ERR(state
)) {
1452 switch (PTR_ERR(state
)) {
1458 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1464 if (state
->inode
== dentry
->d_inode
) {
1465 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1466 nfs4_intent_set_file(nd
, &path
, state
);
1469 nfs4_close_sync(&path
, state
, openflags
);
1476 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1478 struct nfs4_server_caps_res res
= {};
1479 struct rpc_message msg
= {
1480 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1481 .rpc_argp
= fhandle
,
1486 status
= rpc_call_sync(server
->client
, &msg
, 0);
1488 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
1489 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
1490 server
->caps
|= NFS_CAP_ACLS
;
1491 if (res
.has_links
!= 0)
1492 server
->caps
|= NFS_CAP_HARDLINKS
;
1493 if (res
.has_symlinks
!= 0)
1494 server
->caps
|= NFS_CAP_SYMLINKS
;
1495 server
->acl_bitmask
= res
.acl_bitmask
;
1500 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1502 struct nfs4_exception exception
= { };
1505 err
= nfs4_handle_exception(server
,
1506 _nfs4_server_capabilities(server
, fhandle
),
1508 } while (exception
.retry
);
1512 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1513 struct nfs_fsinfo
*info
)
1515 struct nfs4_lookup_root_arg args
= {
1516 .bitmask
= nfs4_fattr_bitmap
,
1518 struct nfs4_lookup_res res
= {
1520 .fattr
= info
->fattr
,
1523 struct rpc_message msg
= {
1524 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
1528 nfs_fattr_init(info
->fattr
);
1529 return rpc_call_sync(server
->client
, &msg
, 0);
1532 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1533 struct nfs_fsinfo
*info
)
1535 struct nfs4_exception exception
= { };
1538 err
= nfs4_handle_exception(server
,
1539 _nfs4_lookup_root(server
, fhandle
, info
),
1541 } while (exception
.retry
);
1546 * get the file handle for the "/" directory on the server
1548 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1549 struct nfs_fsinfo
*info
)
1553 status
= nfs4_lookup_root(server
, fhandle
, info
);
1555 status
= nfs4_server_capabilities(server
, fhandle
);
1557 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
1558 return nfs4_map_errors(status
);
1562 * Get locations and (maybe) other attributes of a referral.
1563 * Note that we'll actually follow the referral later when
1564 * we detect fsid mismatch in inode revalidation
1566 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
1568 int status
= -ENOMEM
;
1569 struct page
*page
= NULL
;
1570 struct nfs4_fs_locations
*locations
= NULL
;
1572 page
= alloc_page(GFP_KERNEL
);
1575 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
1576 if (locations
== NULL
)
1579 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
1582 /* Make sure server returned a different fsid for the referral */
1583 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
1584 dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__
, name
->name
);
1589 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
1590 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
1592 fattr
->mode
= S_IFDIR
;
1593 memset(fhandle
, 0, sizeof(struct nfs_fh
));
1602 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1604 struct nfs4_getattr_arg args
= {
1606 .bitmask
= server
->attr_bitmask
,
1608 struct nfs4_getattr_res res
= {
1612 struct rpc_message msg
= {
1613 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
1618 nfs_fattr_init(fattr
);
1619 return rpc_call_sync(server
->client
, &msg
, 0);
1622 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1624 struct nfs4_exception exception
= { };
1627 err
= nfs4_handle_exception(server
,
1628 _nfs4_proc_getattr(server
, fhandle
, fattr
),
1630 } while (exception
.retry
);
1635 * The file is not closed if it is opened due to the a request to change
1636 * the size of the file. The open call will not be needed once the
1637 * VFS layer lookup-intents are implemented.
1639 * Close is called when the inode is destroyed.
1640 * If we haven't opened the file for O_WRONLY, we
1641 * need to in the size_change case to obtain a stateid.
1644 * Because OPEN is always done by name in nfsv4, it is
1645 * possible that we opened a different file by the same
1646 * name. We can recognize this race condition, but we
1647 * can't do anything about it besides returning an error.
1649 * This will be fixed with VFS changes (lookup-intent).
1652 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
1653 struct iattr
*sattr
)
1655 struct rpc_cred
*cred
;
1656 struct inode
*inode
= dentry
->d_inode
;
1657 struct nfs_open_context
*ctx
;
1658 struct nfs4_state
*state
= NULL
;
1661 nfs_fattr_init(fattr
);
1663 cred
= rpcauth_lookupcred(NFS_CLIENT(inode
)->cl_auth
, 0);
1665 return PTR_ERR(cred
);
1667 /* Search for an existing open(O_WRITE) file */
1668 ctx
= nfs_find_open_context(inode
, cred
, FMODE_WRITE
);
1672 status
= nfs4_do_setattr(inode
, fattr
, sattr
, state
);
1674 nfs_setattr_update_inode(inode
, sattr
);
1676 put_nfs_open_context(ctx
);
1681 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
1682 const struct qstr
*name
, struct nfs_fh
*fhandle
,
1683 struct nfs_fattr
*fattr
)
1686 struct nfs4_lookup_arg args
= {
1687 .bitmask
= server
->attr_bitmask
,
1691 struct nfs4_lookup_res res
= {
1696 struct rpc_message msg
= {
1697 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1702 nfs_fattr_init(fattr
);
1704 dprintk("NFS call lookupfh %s\n", name
->name
);
1705 status
= rpc_call_sync(server
->client
, &msg
, 0);
1706 dprintk("NFS reply lookupfh: %d\n", status
);
1710 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1711 struct qstr
*name
, struct nfs_fh
*fhandle
,
1712 struct nfs_fattr
*fattr
)
1714 struct nfs4_exception exception
= { };
1717 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
1719 if (err
== -NFS4ERR_MOVED
) {
1723 err
= nfs4_handle_exception(server
, err
, &exception
);
1724 } while (exception
.retry
);
1728 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
1729 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1733 dprintk("NFS call lookup %s\n", name
->name
);
1734 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
1735 if (status
== -NFS4ERR_MOVED
)
1736 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
1737 dprintk("NFS reply lookup: %d\n", status
);
1741 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1743 struct nfs4_exception exception
= { };
1746 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1747 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
1749 } while (exception
.retry
);
1753 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1755 struct nfs_server
*server
= NFS_SERVER(inode
);
1756 struct nfs_fattr fattr
;
1757 struct nfs4_accessargs args
= {
1758 .fh
= NFS_FH(inode
),
1759 .bitmask
= server
->attr_bitmask
,
1761 struct nfs4_accessres res
= {
1765 struct rpc_message msg
= {
1766 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
1769 .rpc_cred
= entry
->cred
,
1771 int mode
= entry
->mask
;
1775 * Determine which access bits we want to ask for...
1777 if (mode
& MAY_READ
)
1778 args
.access
|= NFS4_ACCESS_READ
;
1779 if (S_ISDIR(inode
->i_mode
)) {
1780 if (mode
& MAY_WRITE
)
1781 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
1782 if (mode
& MAY_EXEC
)
1783 args
.access
|= NFS4_ACCESS_LOOKUP
;
1785 if (mode
& MAY_WRITE
)
1786 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
1787 if (mode
& MAY_EXEC
)
1788 args
.access
|= NFS4_ACCESS_EXECUTE
;
1790 nfs_fattr_init(&fattr
);
1791 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1794 if (res
.access
& NFS4_ACCESS_READ
)
1795 entry
->mask
|= MAY_READ
;
1796 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
1797 entry
->mask
|= MAY_WRITE
;
1798 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
1799 entry
->mask
|= MAY_EXEC
;
1800 nfs_refresh_inode(inode
, &fattr
);
1805 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1807 struct nfs4_exception exception
= { };
1810 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1811 _nfs4_proc_access(inode
, entry
),
1813 } while (exception
.retry
);
1818 * TODO: For the time being, we don't try to get any attributes
1819 * along with any of the zero-copy operations READ, READDIR,
1822 * In the case of the first three, we want to put the GETATTR
1823 * after the read-type operation -- this is because it is hard
1824 * to predict the length of a GETATTR response in v4, and thus
1825 * align the READ data correctly. This means that the GETATTR
1826 * may end up partially falling into the page cache, and we should
1827 * shift it into the 'tail' of the xdr_buf before processing.
1828 * To do this efficiently, we need to know the total length
1829 * of data received, which doesn't seem to be available outside
1832 * In the case of WRITE, we also want to put the GETATTR after
1833 * the operation -- in this case because we want to make sure
1834 * we get the post-operation mtime and size. This means that
1835 * we can't use xdr_encode_pages() as written: we need a variant
1836 * of it which would leave room in the 'tail' iovec.
1838 * Both of these changes to the XDR layer would in fact be quite
1839 * minor, but I decided to leave them for a subsequent patch.
1841 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1842 unsigned int pgbase
, unsigned int pglen
)
1844 struct nfs4_readlink args
= {
1845 .fh
= NFS_FH(inode
),
1850 struct rpc_message msg
= {
1851 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
1856 return rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1859 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1860 unsigned int pgbase
, unsigned int pglen
)
1862 struct nfs4_exception exception
= { };
1865 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1866 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
1868 } while (exception
.retry
);
1874 * We will need to arrange for the VFS layer to provide an atomic open.
1875 * Until then, this create/open method is prone to inefficiency and race
1876 * conditions due to the lookup, create, and open VFS calls from sys_open()
1877 * placed on the wire.
1879 * Given the above sorry state of affairs, I'm simply sending an OPEN.
1880 * The file will be opened again in the subsequent VFS open call
1881 * (nfs4_proc_file_open).
1883 * The open for read will just hang around to be used by any process that
1884 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
1888 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
1889 int flags
, struct nameidata
*nd
)
1891 struct path path
= {
1892 .mnt
= nd
->path
.mnt
,
1895 struct nfs4_state
*state
;
1896 struct rpc_cred
*cred
;
1899 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1901 status
= PTR_ERR(cred
);
1904 state
= nfs4_do_open(dir
, &path
, flags
, sattr
, cred
);
1907 if (IS_ERR(state
)) {
1908 status
= PTR_ERR(state
);
1911 d_add(dentry
, igrab(state
->inode
));
1912 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1913 if (flags
& O_EXCL
) {
1914 struct nfs_fattr fattr
;
1915 status
= nfs4_do_setattr(state
->inode
, &fattr
, sattr
, state
);
1917 nfs_setattr_update_inode(state
->inode
, sattr
);
1918 nfs_post_op_update_inode(state
->inode
, &fattr
);
1920 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
1921 status
= nfs4_intent_set_file(nd
, &path
, state
);
1923 nfs4_close_sync(&path
, state
, flags
);
1928 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1930 struct nfs_server
*server
= NFS_SERVER(dir
);
1931 struct nfs_removeargs args
= {
1933 .name
.len
= name
->len
,
1934 .name
.name
= name
->name
,
1935 .bitmask
= server
->attr_bitmask
,
1937 struct nfs_removeres res
= {
1940 struct rpc_message msg
= {
1941 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
1947 nfs_fattr_init(&res
.dir_attr
);
1948 status
= rpc_call_sync(server
->client
, &msg
, 0);
1950 update_changeattr(dir
, &res
.cinfo
);
1951 nfs_post_op_update_inode(dir
, &res
.dir_attr
);
1956 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1958 struct nfs4_exception exception
= { };
1961 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1962 _nfs4_proc_remove(dir
, name
),
1964 } while (exception
.retry
);
1968 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
1970 struct nfs_server
*server
= NFS_SERVER(dir
);
1971 struct nfs_removeargs
*args
= msg
->rpc_argp
;
1972 struct nfs_removeres
*res
= msg
->rpc_resp
;
1974 args
->bitmask
= server
->attr_bitmask
;
1975 res
->server
= server
;
1976 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
1979 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
1981 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
1983 if (nfs4_async_handle_error(task
, res
->server
) == -EAGAIN
)
1985 update_changeattr(dir
, &res
->cinfo
);
1986 nfs_post_op_update_inode(dir
, &res
->dir_attr
);
1990 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1991 struct inode
*new_dir
, struct qstr
*new_name
)
1993 struct nfs_server
*server
= NFS_SERVER(old_dir
);
1994 struct nfs4_rename_arg arg
= {
1995 .old_dir
= NFS_FH(old_dir
),
1996 .new_dir
= NFS_FH(new_dir
),
1997 .old_name
= old_name
,
1998 .new_name
= new_name
,
1999 .bitmask
= server
->attr_bitmask
,
2001 struct nfs_fattr old_fattr
, new_fattr
;
2002 struct nfs4_rename_res res
= {
2004 .old_fattr
= &old_fattr
,
2005 .new_fattr
= &new_fattr
,
2007 struct rpc_message msg
= {
2008 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2014 nfs_fattr_init(res
.old_fattr
);
2015 nfs_fattr_init(res
.new_fattr
);
2016 status
= rpc_call_sync(server
->client
, &msg
, 0);
2019 update_changeattr(old_dir
, &res
.old_cinfo
);
2020 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2021 update_changeattr(new_dir
, &res
.new_cinfo
);
2022 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2027 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2028 struct inode
*new_dir
, struct qstr
*new_name
)
2030 struct nfs4_exception exception
= { };
2033 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2034 _nfs4_proc_rename(old_dir
, old_name
,
2037 } while (exception
.retry
);
2041 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2043 struct nfs_server
*server
= NFS_SERVER(inode
);
2044 struct nfs4_link_arg arg
= {
2045 .fh
= NFS_FH(inode
),
2046 .dir_fh
= NFS_FH(dir
),
2048 .bitmask
= server
->attr_bitmask
,
2050 struct nfs_fattr fattr
, dir_attr
;
2051 struct nfs4_link_res res
= {
2054 .dir_attr
= &dir_attr
,
2056 struct rpc_message msg
= {
2057 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2063 nfs_fattr_init(res
.fattr
);
2064 nfs_fattr_init(res
.dir_attr
);
2065 status
= rpc_call_sync(server
->client
, &msg
, 0);
2067 update_changeattr(dir
, &res
.cinfo
);
2068 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2069 nfs_post_op_update_inode(inode
, res
.fattr
);
2075 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2077 struct nfs4_exception exception
= { };
2080 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2081 _nfs4_proc_link(inode
, dir
, name
),
2083 } while (exception
.retry
);
2087 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2088 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2090 struct nfs_server
*server
= NFS_SERVER(dir
);
2091 struct nfs_fh fhandle
;
2092 struct nfs_fattr fattr
, dir_fattr
;
2093 struct nfs4_create_arg arg
= {
2094 .dir_fh
= NFS_FH(dir
),
2096 .name
= &dentry
->d_name
,
2099 .bitmask
= server
->attr_bitmask
,
2101 struct nfs4_create_res res
= {
2105 .dir_fattr
= &dir_fattr
,
2107 struct rpc_message msg
= {
2108 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
],
2114 if (len
> NFS4_MAXPATHLEN
)
2115 return -ENAMETOOLONG
;
2117 arg
.u
.symlink
.pages
= &page
;
2118 arg
.u
.symlink
.len
= len
;
2119 nfs_fattr_init(&fattr
);
2120 nfs_fattr_init(&dir_fattr
);
2122 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2124 update_changeattr(dir
, &res
.dir_cinfo
);
2125 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2126 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2131 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2132 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2134 struct nfs4_exception exception
= { };
2137 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2138 _nfs4_proc_symlink(dir
, dentry
, page
,
2141 } while (exception
.retry
);
2145 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2146 struct iattr
*sattr
)
2148 struct nfs_server
*server
= NFS_SERVER(dir
);
2149 struct nfs_fh fhandle
;
2150 struct nfs_fattr fattr
, dir_fattr
;
2151 struct nfs4_create_arg arg
= {
2152 .dir_fh
= NFS_FH(dir
),
2154 .name
= &dentry
->d_name
,
2157 .bitmask
= server
->attr_bitmask
,
2159 struct nfs4_create_res res
= {
2163 .dir_fattr
= &dir_fattr
,
2165 struct rpc_message msg
= {
2166 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2172 nfs_fattr_init(&fattr
);
2173 nfs_fattr_init(&dir_fattr
);
2175 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2177 update_changeattr(dir
, &res
.dir_cinfo
);
2178 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2179 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2184 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2185 struct iattr
*sattr
)
2187 struct nfs4_exception exception
= { };
2190 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2191 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2193 } while (exception
.retry
);
2197 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2198 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2200 struct inode
*dir
= dentry
->d_inode
;
2201 struct nfs4_readdir_arg args
= {
2206 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2208 struct nfs4_readdir_res res
;
2209 struct rpc_message msg
= {
2210 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2217 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__
,
2218 dentry
->d_parent
->d_name
.name
,
2219 dentry
->d_name
.name
,
2220 (unsigned long long)cookie
);
2221 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2222 res
.pgbase
= args
.pgbase
;
2223 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2225 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2227 nfs_invalidate_atime(dir
);
2229 dprintk("%s: returns %d\n", __FUNCTION__
, status
);
2233 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2234 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2236 struct nfs4_exception exception
= { };
2239 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2240 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2243 } while (exception
.retry
);
2247 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2248 struct iattr
*sattr
, dev_t rdev
)
2250 struct nfs_server
*server
= NFS_SERVER(dir
);
2252 struct nfs_fattr fattr
, dir_fattr
;
2253 struct nfs4_create_arg arg
= {
2254 .dir_fh
= NFS_FH(dir
),
2256 .name
= &dentry
->d_name
,
2258 .bitmask
= server
->attr_bitmask
,
2260 struct nfs4_create_res res
= {
2264 .dir_fattr
= &dir_fattr
,
2266 struct rpc_message msg
= {
2267 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2272 int mode
= sattr
->ia_mode
;
2274 nfs_fattr_init(&fattr
);
2275 nfs_fattr_init(&dir_fattr
);
2277 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2278 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2280 arg
.ftype
= NF4FIFO
;
2281 else if (S_ISBLK(mode
)) {
2283 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2284 arg
.u
.device
.specdata2
= MINOR(rdev
);
2286 else if (S_ISCHR(mode
)) {
2288 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2289 arg
.u
.device
.specdata2
= MINOR(rdev
);
2292 arg
.ftype
= NF4SOCK
;
2294 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2296 update_changeattr(dir
, &res
.dir_cinfo
);
2297 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2298 status
= nfs_instantiate(dentry
, &fh
, &fattr
);
2303 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2304 struct iattr
*sattr
, dev_t rdev
)
2306 struct nfs4_exception exception
= { };
2309 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2310 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2312 } while (exception
.retry
);
2316 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2317 struct nfs_fsstat
*fsstat
)
2319 struct nfs4_statfs_arg args
= {
2321 .bitmask
= server
->attr_bitmask
,
2323 struct rpc_message msg
= {
2324 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2329 nfs_fattr_init(fsstat
->fattr
);
2330 return rpc_call_sync(server
->client
, &msg
, 0);
2333 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2335 struct nfs4_exception exception
= { };
2338 err
= nfs4_handle_exception(server
,
2339 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2341 } while (exception
.retry
);
2345 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2346 struct nfs_fsinfo
*fsinfo
)
2348 struct nfs4_fsinfo_arg args
= {
2350 .bitmask
= server
->attr_bitmask
,
2352 struct rpc_message msg
= {
2353 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2358 return rpc_call_sync(server
->client
, &msg
, 0);
2361 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2363 struct nfs4_exception exception
= { };
2367 err
= nfs4_handle_exception(server
,
2368 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2370 } while (exception
.retry
);
2374 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2376 nfs_fattr_init(fsinfo
->fattr
);
2377 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2380 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2381 struct nfs_pathconf
*pathconf
)
2383 struct nfs4_pathconf_arg args
= {
2385 .bitmask
= server
->attr_bitmask
,
2387 struct rpc_message msg
= {
2388 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2390 .rpc_resp
= pathconf
,
2393 /* None of the pathconf attributes are mandatory to implement */
2394 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2395 memset(pathconf
, 0, sizeof(*pathconf
));
2399 nfs_fattr_init(pathconf
->fattr
);
2400 return rpc_call_sync(server
->client
, &msg
, 0);
2403 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2404 struct nfs_pathconf
*pathconf
)
2406 struct nfs4_exception exception
= { };
2410 err
= nfs4_handle_exception(server
,
2411 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2413 } while (exception
.retry
);
2417 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2419 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2421 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
2422 rpc_restart_call(task
);
2426 nfs_invalidate_atime(data
->inode
);
2427 if (task
->tk_status
> 0)
2428 renew_lease(server
, data
->timestamp
);
2432 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
2434 data
->timestamp
= jiffies
;
2435 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
2438 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2440 struct inode
*inode
= data
->inode
;
2442 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2443 rpc_restart_call(task
);
2446 if (task
->tk_status
>= 0) {
2447 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2448 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
2453 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
2455 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2457 data
->args
.bitmask
= server
->attr_bitmask
;
2458 data
->res
.server
= server
;
2459 data
->timestamp
= jiffies
;
2461 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
2464 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2466 struct inode
*inode
= data
->inode
;
2468 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2469 rpc_restart_call(task
);
2472 nfs_refresh_inode(inode
, data
->res
.fattr
);
2476 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
2478 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2480 data
->args
.bitmask
= server
->attr_bitmask
;
2481 data
->res
.server
= server
;
2482 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
2486 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
2487 * standalone procedure for queueing an asynchronous RENEW.
2489 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
2491 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
2492 unsigned long timestamp
= (unsigned long)data
;
2494 if (task
->tk_status
< 0) {
2495 switch (task
->tk_status
) {
2496 case -NFS4ERR_STALE_CLIENTID
:
2497 case -NFS4ERR_EXPIRED
:
2498 case -NFS4ERR_CB_PATH_DOWN
:
2499 nfs4_schedule_state_recovery(clp
);
2503 spin_lock(&clp
->cl_lock
);
2504 if (time_before(clp
->cl_last_renewal
,timestamp
))
2505 clp
->cl_last_renewal
= timestamp
;
2506 spin_unlock(&clp
->cl_lock
);
2509 static const struct rpc_call_ops nfs4_renew_ops
= {
2510 .rpc_call_done
= nfs4_renew_done
,
2513 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2515 struct rpc_message msg
= {
2516 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2521 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
2522 &nfs4_renew_ops
, (void *)jiffies
);
2525 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2527 struct rpc_message msg
= {
2528 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2532 unsigned long now
= jiffies
;
2535 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2538 spin_lock(&clp
->cl_lock
);
2539 if (time_before(clp
->cl_last_renewal
,now
))
2540 clp
->cl_last_renewal
= now
;
2541 spin_unlock(&clp
->cl_lock
);
2545 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
2547 return (server
->caps
& NFS_CAP_ACLS
)
2548 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2549 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
2552 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
2553 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
2556 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
2558 static void buf_to_pages(const void *buf
, size_t buflen
,
2559 struct page
**pages
, unsigned int *pgbase
)
2561 const void *p
= buf
;
2563 *pgbase
= offset_in_page(buf
);
2565 while (p
< buf
+ buflen
) {
2566 *(pages
++) = virt_to_page(p
);
2567 p
+= PAGE_CACHE_SIZE
;
2571 struct nfs4_cached_acl
{
2577 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
2579 struct nfs_inode
*nfsi
= NFS_I(inode
);
2581 spin_lock(&inode
->i_lock
);
2582 kfree(nfsi
->nfs4_acl
);
2583 nfsi
->nfs4_acl
= acl
;
2584 spin_unlock(&inode
->i_lock
);
2587 static void nfs4_zap_acl_attr(struct inode
*inode
)
2589 nfs4_set_cached_acl(inode
, NULL
);
2592 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
2594 struct nfs_inode
*nfsi
= NFS_I(inode
);
2595 struct nfs4_cached_acl
*acl
;
2598 spin_lock(&inode
->i_lock
);
2599 acl
= nfsi
->nfs4_acl
;
2602 if (buf
== NULL
) /* user is just asking for length */
2604 if (acl
->cached
== 0)
2606 ret
= -ERANGE
; /* see getxattr(2) man page */
2607 if (acl
->len
> buflen
)
2609 memcpy(buf
, acl
->data
, acl
->len
);
2613 spin_unlock(&inode
->i_lock
);
2617 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
2619 struct nfs4_cached_acl
*acl
;
2621 if (buf
&& acl_len
<= PAGE_SIZE
) {
2622 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
2626 memcpy(acl
->data
, buf
, acl_len
);
2628 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
2635 nfs4_set_cached_acl(inode
, acl
);
2638 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2640 struct page
*pages
[NFS4ACL_MAXPAGES
];
2641 struct nfs_getaclargs args
= {
2642 .fh
= NFS_FH(inode
),
2646 size_t resp_len
= buflen
;
2648 struct rpc_message msg
= {
2649 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
2651 .rpc_resp
= &resp_len
,
2653 struct page
*localpage
= NULL
;
2656 if (buflen
< PAGE_SIZE
) {
2657 /* As long as we're doing a round trip to the server anyway,
2658 * let's be prepared for a page of acl data. */
2659 localpage
= alloc_page(GFP_KERNEL
);
2660 resp_buf
= page_address(localpage
);
2661 if (localpage
== NULL
)
2663 args
.acl_pages
[0] = localpage
;
2664 args
.acl_pgbase
= 0;
2665 resp_len
= args
.acl_len
= PAGE_SIZE
;
2668 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
2670 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2673 if (resp_len
> args
.acl_len
)
2674 nfs4_write_cached_acl(inode
, NULL
, resp_len
);
2676 nfs4_write_cached_acl(inode
, resp_buf
, resp_len
);
2679 if (resp_len
> buflen
)
2682 memcpy(buf
, resp_buf
, resp_len
);
2687 __free_page(localpage
);
2691 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2693 struct nfs4_exception exception
= { };
2696 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
2699 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
2700 } while (exception
.retry
);
2704 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
2706 struct nfs_server
*server
= NFS_SERVER(inode
);
2709 if (!nfs4_server_supports_acls(server
))
2711 ret
= nfs_revalidate_inode(server
, inode
);
2714 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
2717 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
2720 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2722 struct nfs_server
*server
= NFS_SERVER(inode
);
2723 struct page
*pages
[NFS4ACL_MAXPAGES
];
2724 struct nfs_setaclargs arg
= {
2725 .fh
= NFS_FH(inode
),
2729 struct rpc_message msg
= {
2730 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
2736 if (!nfs4_server_supports_acls(server
))
2738 nfs_inode_return_delegation(inode
);
2739 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
2740 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2741 nfs_zap_caches(inode
);
2745 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2747 struct nfs4_exception exception
= { };
2750 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2751 __nfs4_proc_set_acl(inode
, buf
, buflen
),
2753 } while (exception
.retry
);
2758 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
)
2760 struct nfs_client
*clp
= server
->nfs_client
;
2762 if (!clp
|| task
->tk_status
>= 0)
2764 switch(task
->tk_status
) {
2765 case -NFS4ERR_STALE_CLIENTID
:
2766 case -NFS4ERR_STALE_STATEID
:
2767 case -NFS4ERR_EXPIRED
:
2768 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
, NULL
);
2769 nfs4_schedule_state_recovery(clp
);
2770 if (test_bit(NFS4CLNT_STATE_RECOVER
, &clp
->cl_state
) == 0)
2771 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
2772 task
->tk_status
= 0;
2774 case -NFS4ERR_DELAY
:
2775 nfs_inc_server_stats((struct nfs_server
*) server
,
2777 case -NFS4ERR_GRACE
:
2778 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
2779 task
->tk_status
= 0;
2781 case -NFS4ERR_OLD_STATEID
:
2782 task
->tk_status
= 0;
2785 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
2789 static int nfs4_wait_bit_killable(void *word
)
2791 if (fatal_signal_pending(current
))
2792 return -ERESTARTSYS
;
2797 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
)
2803 rwsem_acquire(&clp
->cl_sem
.dep_map
, 0, 0, _RET_IP_
);
2805 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_STATE_RECOVER
,
2806 nfs4_wait_bit_killable
, TASK_KILLABLE
);
2808 rwsem_release(&clp
->cl_sem
.dep_map
, 1, _RET_IP_
);
2812 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
2819 *timeout
= NFS4_POLL_RETRY_MIN
;
2820 if (*timeout
> NFS4_POLL_RETRY_MAX
)
2821 *timeout
= NFS4_POLL_RETRY_MAX
;
2822 schedule_timeout_killable(*timeout
);
2823 if (fatal_signal_pending(current
))
2829 /* This is the error handling routine for processes that are allowed
2832 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
2834 struct nfs_client
*clp
= server
->nfs_client
;
2835 int ret
= errorcode
;
2837 exception
->retry
= 0;
2841 case -NFS4ERR_STALE_CLIENTID
:
2842 case -NFS4ERR_STALE_STATEID
:
2843 case -NFS4ERR_EXPIRED
:
2844 nfs4_schedule_state_recovery(clp
);
2845 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
2847 exception
->retry
= 1;
2849 case -NFS4ERR_FILE_OPEN
:
2850 case -NFS4ERR_GRACE
:
2851 case -NFS4ERR_DELAY
:
2852 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
2855 case -NFS4ERR_OLD_STATEID
:
2856 exception
->retry
= 1;
2858 /* We failed to handle the error */
2859 return nfs4_map_errors(ret
);
2862 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
2864 nfs4_verifier sc_verifier
;
2865 struct nfs4_setclientid setclientid
= {
2866 .sc_verifier
= &sc_verifier
,
2869 struct rpc_message msg
= {
2870 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
2871 .rpc_argp
= &setclientid
,
2879 p
= (__be32
*)sc_verifier
.data
;
2880 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
2881 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
2884 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
2885 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
2887 rpc_peeraddr2str(clp
->cl_rpcclient
,
2889 rpc_peeraddr2str(clp
->cl_rpcclient
,
2891 cred
->cr_ops
->cr_name
,
2892 clp
->cl_id_uniquifier
);
2893 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
2894 sizeof(setclientid
.sc_netid
),
2895 rpc_peeraddr2str(clp
->cl_rpcclient
,
2896 RPC_DISPLAY_NETID
));
2897 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
2898 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
2899 clp
->cl_ipaddr
, port
>> 8, port
& 255);
2901 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2902 if (status
!= -NFS4ERR_CLID_INUSE
)
2907 ssleep(clp
->cl_lease_time
+ 1);
2909 if (++clp
->cl_id_uniquifier
== 0)
2915 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2917 struct nfs_fsinfo fsinfo
;
2918 struct rpc_message msg
= {
2919 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
2921 .rpc_resp
= &fsinfo
,
2928 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2930 spin_lock(&clp
->cl_lock
);
2931 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
2932 clp
->cl_last_renewal
= now
;
2933 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
2934 spin_unlock(&clp
->cl_lock
);
2939 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2944 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
2948 case -NFS4ERR_RESOURCE
:
2949 /* The IBM lawyers misread another document! */
2950 case -NFS4ERR_DELAY
:
2951 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
2957 struct nfs4_delegreturndata
{
2958 struct nfs4_delegreturnargs args
;
2959 struct nfs4_delegreturnres res
;
2961 nfs4_stateid stateid
;
2962 unsigned long timestamp
;
2963 struct nfs_fattr fattr
;
2967 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
2969 struct nfs4_delegreturndata
*data
= calldata
;
2970 data
->rpc_status
= task
->tk_status
;
2971 if (data
->rpc_status
== 0)
2972 renew_lease(data
->res
.server
, data
->timestamp
);
2975 static void nfs4_delegreturn_release(void *calldata
)
2980 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
2981 .rpc_call_done
= nfs4_delegreturn_done
,
2982 .rpc_release
= nfs4_delegreturn_release
,
2985 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
2987 struct nfs4_delegreturndata
*data
;
2988 struct nfs_server
*server
= NFS_SERVER(inode
);
2989 struct rpc_task
*task
;
2990 struct rpc_message msg
= {
2991 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
2994 struct rpc_task_setup task_setup_data
= {
2995 .rpc_client
= server
->client
,
2996 .rpc_message
= &msg
,
2997 .callback_ops
= &nfs4_delegreturn_ops
,
2998 .flags
= RPC_TASK_ASYNC
,
3002 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3005 data
->args
.fhandle
= &data
->fh
;
3006 data
->args
.stateid
= &data
->stateid
;
3007 data
->args
.bitmask
= server
->attr_bitmask
;
3008 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3009 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3010 data
->res
.fattr
= &data
->fattr
;
3011 data
->res
.server
= server
;
3012 nfs_fattr_init(data
->res
.fattr
);
3013 data
->timestamp
= jiffies
;
3014 data
->rpc_status
= 0;
3016 task_setup_data
.callback_data
= data
;
3017 msg
.rpc_argp
= &data
->args
,
3018 msg
.rpc_resp
= &data
->res
,
3019 task
= rpc_run_task(&task_setup_data
);
3021 return PTR_ERR(task
);
3024 status
= nfs4_wait_for_completion_rpc_task(task
);
3027 status
= data
->rpc_status
;
3030 nfs_refresh_inode(inode
, &data
->fattr
);
3036 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3038 struct nfs_server
*server
= NFS_SERVER(inode
);
3039 struct nfs4_exception exception
= { };
3042 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3044 case -NFS4ERR_STALE_STATEID
:
3045 case -NFS4ERR_EXPIRED
:
3049 err
= nfs4_handle_exception(server
, err
, &exception
);
3050 } while (exception
.retry
);
3054 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3055 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3058 * sleep, with exponential backoff, and retry the LOCK operation.
3060 static unsigned long
3061 nfs4_set_lock_task_retry(unsigned long timeout
)
3063 schedule_timeout_killable(timeout
);
3065 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3066 return NFS4_LOCK_MAXTIMEOUT
;
3070 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3072 struct inode
*inode
= state
->inode
;
3073 struct nfs_server
*server
= NFS_SERVER(inode
);
3074 struct nfs_client
*clp
= server
->nfs_client
;
3075 struct nfs_lockt_args arg
= {
3076 .fh
= NFS_FH(inode
),
3079 struct nfs_lockt_res res
= {
3082 struct rpc_message msg
= {
3083 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3086 .rpc_cred
= state
->owner
->so_cred
,
3088 struct nfs4_lock_state
*lsp
;
3091 down_read(&clp
->cl_sem
);
3092 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3093 status
= nfs4_set_lock_state(state
, request
);
3096 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3097 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3098 status
= rpc_call_sync(server
->client
, &msg
, 0);
3101 request
->fl_type
= F_UNLCK
;
3103 case -NFS4ERR_DENIED
:
3106 request
->fl_ops
->fl_release_private(request
);
3108 up_read(&clp
->cl_sem
);
3112 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3114 struct nfs4_exception exception
= { };
3118 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3119 _nfs4_proc_getlk(state
, cmd
, request
),
3121 } while (exception
.retry
);
3125 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3128 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3130 res
= posix_lock_file_wait(file
, fl
);
3133 res
= flock_lock_file_wait(file
, fl
);
3141 struct nfs4_unlockdata
{
3142 struct nfs_locku_args arg
;
3143 struct nfs_locku_res res
;
3144 struct nfs4_lock_state
*lsp
;
3145 struct nfs_open_context
*ctx
;
3146 struct file_lock fl
;
3147 const struct nfs_server
*server
;
3148 unsigned long timestamp
;
3151 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3152 struct nfs_open_context
*ctx
,
3153 struct nfs4_lock_state
*lsp
,
3154 struct nfs_seqid
*seqid
)
3156 struct nfs4_unlockdata
*p
;
3157 struct inode
*inode
= lsp
->ls_state
->inode
;
3159 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
3162 p
->arg
.fh
= NFS_FH(inode
);
3164 p
->arg
.seqid
= seqid
;
3165 p
->arg
.stateid
= &lsp
->ls_stateid
;
3167 atomic_inc(&lsp
->ls_count
);
3168 /* Ensure we don't close file until we're done freeing locks! */
3169 p
->ctx
= get_nfs_open_context(ctx
);
3170 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3171 p
->server
= NFS_SERVER(inode
);
3175 static void nfs4_locku_release_calldata(void *data
)
3177 struct nfs4_unlockdata
*calldata
= data
;
3178 nfs_free_seqid(calldata
->arg
.seqid
);
3179 nfs4_put_lock_state(calldata
->lsp
);
3180 put_nfs_open_context(calldata
->ctx
);
3184 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3186 struct nfs4_unlockdata
*calldata
= data
;
3188 if (RPC_ASSASSINATED(task
))
3190 nfs_increment_lock_seqid(task
->tk_status
, calldata
->arg
.seqid
);
3191 switch (task
->tk_status
) {
3193 memcpy(calldata
->lsp
->ls_stateid
.data
,
3194 calldata
->res
.stateid
.data
,
3195 sizeof(calldata
->lsp
->ls_stateid
.data
));
3196 renew_lease(calldata
->server
, calldata
->timestamp
);
3198 case -NFS4ERR_STALE_STATEID
:
3199 case -NFS4ERR_EXPIRED
:
3202 if (nfs4_async_handle_error(task
, calldata
->server
) == -EAGAIN
)
3203 rpc_restart_call(task
);
3207 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3209 struct nfs4_unlockdata
*calldata
= data
;
3211 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3213 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3214 /* Note: exit _without_ running nfs4_locku_done */
3215 task
->tk_action
= NULL
;
3218 calldata
->timestamp
= jiffies
;
3219 rpc_call_start(task
);
3222 static const struct rpc_call_ops nfs4_locku_ops
= {
3223 .rpc_call_prepare
= nfs4_locku_prepare
,
3224 .rpc_call_done
= nfs4_locku_done
,
3225 .rpc_release
= nfs4_locku_release_calldata
,
3228 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3229 struct nfs_open_context
*ctx
,
3230 struct nfs4_lock_state
*lsp
,
3231 struct nfs_seqid
*seqid
)
3233 struct nfs4_unlockdata
*data
;
3234 struct rpc_message msg
= {
3235 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3236 .rpc_cred
= ctx
->cred
,
3238 struct rpc_task_setup task_setup_data
= {
3239 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
3240 .rpc_message
= &msg
,
3241 .callback_ops
= &nfs4_locku_ops
,
3242 .workqueue
= nfsiod_workqueue
,
3243 .flags
= RPC_TASK_ASYNC
,
3246 /* Ensure this is an unlock - when canceling a lock, the
3247 * canceled lock is passed in, and it won't be an unlock.
3249 fl
->fl_type
= F_UNLCK
;
3251 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3253 nfs_free_seqid(seqid
);
3254 return ERR_PTR(-ENOMEM
);
3257 msg
.rpc_argp
= &data
->arg
,
3258 msg
.rpc_resp
= &data
->res
,
3259 task_setup_data
.callback_data
= data
;
3260 return rpc_run_task(&task_setup_data
);
3263 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3265 struct nfs_seqid
*seqid
;
3266 struct nfs4_lock_state
*lsp
;
3267 struct rpc_task
*task
;
3270 status
= nfs4_set_lock_state(state
, request
);
3271 /* Unlock _before_ we do the RPC call */
3272 request
->fl_flags
|= FL_EXISTS
;
3273 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
)
3277 /* Is this a delegated lock? */
3278 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3280 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3281 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3285 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
3286 status
= PTR_ERR(task
);
3289 status
= nfs4_wait_for_completion_rpc_task(task
);
3295 struct nfs4_lockdata
{
3296 struct nfs_lock_args arg
;
3297 struct nfs_lock_res res
;
3298 struct nfs4_lock_state
*lsp
;
3299 struct nfs_open_context
*ctx
;
3300 struct file_lock fl
;
3301 unsigned long timestamp
;
3306 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3307 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3309 struct nfs4_lockdata
*p
;
3310 struct inode
*inode
= lsp
->ls_state
->inode
;
3311 struct nfs_server
*server
= NFS_SERVER(inode
);
3313 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3317 p
->arg
.fh
= NFS_FH(inode
);
3319 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
);
3320 if (p
->arg
.open_seqid
== NULL
)
3322 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3323 if (p
->arg
.lock_seqid
== NULL
)
3324 goto out_free_seqid
;
3325 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3326 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3327 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3329 atomic_inc(&lsp
->ls_count
);
3330 p
->ctx
= get_nfs_open_context(ctx
);
3331 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3334 nfs_free_seqid(p
->arg
.open_seqid
);
3340 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3342 struct nfs4_lockdata
*data
= calldata
;
3343 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3345 dprintk("%s: begin!\n", __FUNCTION__
);
3346 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3348 /* Do we need to do an open_to_lock_owner? */
3349 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3350 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
3352 data
->arg
.open_stateid
= &state
->stateid
;
3353 data
->arg
.new_lock_owner
= 1;
3355 data
->arg
.new_lock_owner
= 0;
3356 data
->timestamp
= jiffies
;
3357 rpc_call_start(task
);
3358 dprintk("%s: done!, ret = %d\n", __FUNCTION__
, data
->rpc_status
);
3361 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3363 struct nfs4_lockdata
*data
= calldata
;
3365 dprintk("%s: begin!\n", __FUNCTION__
);
3367 data
->rpc_status
= task
->tk_status
;
3368 if (RPC_ASSASSINATED(task
))
3370 if (data
->arg
.new_lock_owner
!= 0) {
3371 nfs_increment_open_seqid(data
->rpc_status
, data
->arg
.open_seqid
);
3372 if (data
->rpc_status
== 0)
3373 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3377 if (data
->rpc_status
== 0) {
3378 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3379 sizeof(data
->lsp
->ls_stateid
.data
));
3380 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3381 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3383 nfs_increment_lock_seqid(data
->rpc_status
, data
->arg
.lock_seqid
);
3385 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, data
->rpc_status
);
3388 static void nfs4_lock_release(void *calldata
)
3390 struct nfs4_lockdata
*data
= calldata
;
3392 dprintk("%s: begin!\n", __FUNCTION__
);
3393 nfs_free_seqid(data
->arg
.open_seqid
);
3394 if (data
->cancelled
!= 0) {
3395 struct rpc_task
*task
;
3396 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3397 data
->arg
.lock_seqid
);
3400 dprintk("%s: cancelling lock!\n", __FUNCTION__
);
3402 nfs_free_seqid(data
->arg
.lock_seqid
);
3403 nfs4_put_lock_state(data
->lsp
);
3404 put_nfs_open_context(data
->ctx
);
3406 dprintk("%s: done!\n", __FUNCTION__
);
3409 static const struct rpc_call_ops nfs4_lock_ops
= {
3410 .rpc_call_prepare
= nfs4_lock_prepare
,
3411 .rpc_call_done
= nfs4_lock_done
,
3412 .rpc_release
= nfs4_lock_release
,
3415 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3417 struct nfs4_lockdata
*data
;
3418 struct rpc_task
*task
;
3419 struct rpc_message msg
= {
3420 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3421 .rpc_cred
= state
->owner
->so_cred
,
3423 struct rpc_task_setup task_setup_data
= {
3424 .rpc_client
= NFS_CLIENT(state
->inode
),
3425 .rpc_message
= &msg
,
3426 .callback_ops
= &nfs4_lock_ops
,
3427 .workqueue
= nfsiod_workqueue
,
3428 .flags
= RPC_TASK_ASYNC
,
3432 dprintk("%s: begin!\n", __FUNCTION__
);
3433 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
3434 fl
->fl_u
.nfs4_fl
.owner
);
3438 data
->arg
.block
= 1;
3440 data
->arg
.reclaim
= 1;
3441 msg
.rpc_argp
= &data
->arg
,
3442 msg
.rpc_resp
= &data
->res
,
3443 task_setup_data
.callback_data
= data
;
3444 task
= rpc_run_task(&task_setup_data
);
3446 return PTR_ERR(task
);
3447 ret
= nfs4_wait_for_completion_rpc_task(task
);
3449 ret
= data
->rpc_status
;
3450 if (ret
== -NFS4ERR_DENIED
)
3453 data
->cancelled
= 1;
3455 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, ret
);
3459 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
3461 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3462 struct nfs4_exception exception
= { };
3466 /* Cache the lock if possible... */
3467 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3469 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
3470 if (err
!= -NFS4ERR_DELAY
)
3472 nfs4_handle_exception(server
, err
, &exception
);
3473 } while (exception
.retry
);
3477 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
3479 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3480 struct nfs4_exception exception
= { };
3483 err
= nfs4_set_lock_state(state
, request
);
3487 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3489 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
3490 if (err
!= -NFS4ERR_DELAY
)
3492 nfs4_handle_exception(server
, err
, &exception
);
3493 } while (exception
.retry
);
3497 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3499 struct nfs_client
*clp
= state
->owner
->so_client
;
3500 unsigned char fl_flags
= request
->fl_flags
;
3503 /* Is this a delegated open? */
3504 status
= nfs4_set_lock_state(state
, request
);
3507 request
->fl_flags
|= FL_ACCESS
;
3508 status
= do_vfs_lock(request
->fl_file
, request
);
3511 down_read(&clp
->cl_sem
);
3512 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3513 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3514 /* Yes: cache locks! */
3515 down_read(&nfsi
->rwsem
);
3516 /* ...but avoid races with delegation recall... */
3517 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3518 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
3519 status
= do_vfs_lock(request
->fl_file
, request
);
3520 up_read(&nfsi
->rwsem
);
3523 up_read(&nfsi
->rwsem
);
3525 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
3528 /* Note: we always want to sleep here! */
3529 request
->fl_flags
= fl_flags
| FL_SLEEP
;
3530 if (do_vfs_lock(request
->fl_file
, request
) < 0)
3531 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __FUNCTION__
);
3533 up_read(&clp
->cl_sem
);
3535 request
->fl_flags
= fl_flags
;
3539 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3541 struct nfs4_exception exception
= { };
3545 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3546 _nfs4_proc_setlk(state
, cmd
, request
),
3548 } while (exception
.retry
);
3553 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
3555 struct nfs_open_context
*ctx
;
3556 struct nfs4_state
*state
;
3557 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
3560 /* verify open state */
3561 ctx
= nfs_file_open_context(filp
);
3564 if (request
->fl_start
< 0 || request
->fl_end
< 0)
3568 return nfs4_proc_getlk(state
, F_GETLK
, request
);
3570 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
3573 if (request
->fl_type
== F_UNLCK
)
3574 return nfs4_proc_unlck(state
, cmd
, request
);
3577 status
= nfs4_proc_setlk(state
, cmd
, request
);
3578 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
3580 timeout
= nfs4_set_lock_task_retry(timeout
);
3581 status
= -ERESTARTSYS
;
3584 } while(status
< 0);
3588 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
3590 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3591 struct nfs4_exception exception
= { };
3594 err
= nfs4_set_lock_state(state
, fl
);
3598 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
3599 if (err
!= -NFS4ERR_DELAY
)
3601 err
= nfs4_handle_exception(server
, err
, &exception
);
3602 } while (exception
.retry
);
3607 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
3609 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
3610 size_t buflen
, int flags
)
3612 struct inode
*inode
= dentry
->d_inode
;
3614 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3617 return nfs4_proc_set_acl(inode
, buf
, buflen
);
3620 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
3621 * and that's what we'll do for e.g. user attributes that haven't been set.
3622 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
3623 * attributes in kernel-managed attribute namespaces. */
3624 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
3627 struct inode
*inode
= dentry
->d_inode
;
3629 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3632 return nfs4_proc_get_acl(inode
, buf
, buflen
);
3635 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
3637 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
3639 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
3641 if (buf
&& buflen
< len
)
3644 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
3648 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
3649 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
3651 struct nfs_server
*server
= NFS_SERVER(dir
);
3653 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
3654 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
3656 struct nfs4_fs_locations_arg args
= {
3657 .dir_fh
= NFS_FH(dir
),
3662 struct rpc_message msg
= {
3663 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
3665 .rpc_resp
= fs_locations
,
3669 dprintk("%s: start\n", __FUNCTION__
);
3670 nfs_fattr_init(&fs_locations
->fattr
);
3671 fs_locations
->server
= server
;
3672 fs_locations
->nlocations
= 0;
3673 status
= rpc_call_sync(server
->client
, &msg
, 0);
3674 dprintk("%s: returned status = %d\n", __FUNCTION__
, status
);
3678 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops
= {
3679 .recover_open
= nfs4_open_reclaim
,
3680 .recover_lock
= nfs4_lock_reclaim
,
3683 struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops
= {
3684 .recover_open
= nfs4_open_expired
,
3685 .recover_lock
= nfs4_lock_expired
,
3688 static const struct inode_operations nfs4_file_inode_operations
= {
3689 .permission
= nfs_permission
,
3690 .getattr
= nfs_getattr
,
3691 .setattr
= nfs_setattr
,
3692 .getxattr
= nfs4_getxattr
,
3693 .setxattr
= nfs4_setxattr
,
3694 .listxattr
= nfs4_listxattr
,
3697 const struct nfs_rpc_ops nfs_v4_clientops
= {
3698 .version
= 4, /* protocol version */
3699 .dentry_ops
= &nfs4_dentry_operations
,
3700 .dir_inode_ops
= &nfs4_dir_inode_operations
,
3701 .file_inode_ops
= &nfs4_file_inode_operations
,
3702 .getroot
= nfs4_proc_get_root
,
3703 .getattr
= nfs4_proc_getattr
,
3704 .setattr
= nfs4_proc_setattr
,
3705 .lookupfh
= nfs4_proc_lookupfh
,
3706 .lookup
= nfs4_proc_lookup
,
3707 .access
= nfs4_proc_access
,
3708 .readlink
= nfs4_proc_readlink
,
3709 .create
= nfs4_proc_create
,
3710 .remove
= nfs4_proc_remove
,
3711 .unlink_setup
= nfs4_proc_unlink_setup
,
3712 .unlink_done
= nfs4_proc_unlink_done
,
3713 .rename
= nfs4_proc_rename
,
3714 .link
= nfs4_proc_link
,
3715 .symlink
= nfs4_proc_symlink
,
3716 .mkdir
= nfs4_proc_mkdir
,
3717 .rmdir
= nfs4_proc_remove
,
3718 .readdir
= nfs4_proc_readdir
,
3719 .mknod
= nfs4_proc_mknod
,
3720 .statfs
= nfs4_proc_statfs
,
3721 .fsinfo
= nfs4_proc_fsinfo
,
3722 .pathconf
= nfs4_proc_pathconf
,
3723 .set_capabilities
= nfs4_server_capabilities
,
3724 .decode_dirent
= nfs4_decode_dirent
,
3725 .read_setup
= nfs4_proc_read_setup
,
3726 .read_done
= nfs4_read_done
,
3727 .write_setup
= nfs4_proc_write_setup
,
3728 .write_done
= nfs4_write_done
,
3729 .commit_setup
= nfs4_proc_commit_setup
,
3730 .commit_done
= nfs4_commit_done
,
3731 .file_open
= nfs_open
,
3732 .file_release
= nfs_release
,
3733 .lock
= nfs4_proc_lock
,
3734 .clear_acl_cache
= nfs4_zap_acl_attr
,