4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/utsname.h>
40 #include <linux/delay.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/sunrpc/clnt.h>
44 #include <linux/nfs.h>
45 #include <linux/nfs4.h>
46 #include <linux/nfs_fs.h>
47 #include <linux/nfs_page.h>
48 #include <linux/smp_lock.h>
49 #include <linux/namei.h>
50 #include <linux/mount.h>
53 #include "delegation.h"
56 #define NFSDBG_FACILITY NFSDBG_PROC
58 #define NFS4_POLL_RETRY_MIN (HZ/10)
59 #define NFS4_POLL_RETRY_MAX (15*HZ)
62 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
63 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
64 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*);
65 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
);
66 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
);
67 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
68 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
70 /* Prevent leaks of NFSv4 errors into userland */
71 int nfs4_map_errors(int err
)
74 dprintk("%s could not handle NFSv4 error %d\n",
82 * This is our standard bitmap for GETATTR requests.
84 const u32 nfs4_fattr_bitmap
[2] = {
89 | FATTR4_WORD0_FILEID
,
91 | FATTR4_WORD1_NUMLINKS
93 | FATTR4_WORD1_OWNER_GROUP
95 | FATTR4_WORD1_SPACE_USED
96 | FATTR4_WORD1_TIME_ACCESS
97 | FATTR4_WORD1_TIME_METADATA
98 | FATTR4_WORD1_TIME_MODIFY
101 const u32 nfs4_statfs_bitmap
[2] = {
102 FATTR4_WORD0_FILES_AVAIL
103 | FATTR4_WORD0_FILES_FREE
104 | FATTR4_WORD0_FILES_TOTAL
,
105 FATTR4_WORD1_SPACE_AVAIL
106 | FATTR4_WORD1_SPACE_FREE
107 | FATTR4_WORD1_SPACE_TOTAL
110 const u32 nfs4_pathconf_bitmap
[2] = {
112 | FATTR4_WORD0_MAXNAME
,
116 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
117 | FATTR4_WORD0_MAXREAD
118 | FATTR4_WORD0_MAXWRITE
119 | FATTR4_WORD0_LEASE_TIME
,
123 const u32 nfs4_fs_locations_bitmap
[2] = {
125 | FATTR4_WORD0_CHANGE
128 | FATTR4_WORD0_FILEID
129 | FATTR4_WORD0_FS_LOCATIONS
,
131 | FATTR4_WORD1_NUMLINKS
133 | FATTR4_WORD1_OWNER_GROUP
134 | FATTR4_WORD1_RAWDEV
135 | FATTR4_WORD1_SPACE_USED
136 | FATTR4_WORD1_TIME_ACCESS
137 | FATTR4_WORD1_TIME_METADATA
138 | FATTR4_WORD1_TIME_MODIFY
139 | FATTR4_WORD1_MOUNTED_ON_FILEID
142 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
143 struct nfs4_readdir_arg
*readdir
)
147 BUG_ON(readdir
->count
< 80);
149 readdir
->cookie
= cookie
;
150 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
155 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
160 * NFSv4 servers do not return entries for '.' and '..'
161 * Therefore, we fake these entries here. We let '.'
162 * have cookie 0 and '..' have cookie 1. Note that
163 * when talking to the server, we always send cookie 0
166 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
169 *p
++ = xdr_one
; /* next */
170 *p
++ = xdr_zero
; /* cookie, first word */
171 *p
++ = xdr_one
; /* cookie, second word */
172 *p
++ = xdr_one
; /* entry len */
173 memcpy(p
, ".\0\0\0", 4); /* entry */
175 *p
++ = xdr_one
; /* bitmap length */
176 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
177 *p
++ = htonl(8); /* attribute buffer length */
178 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
181 *p
++ = xdr_one
; /* next */
182 *p
++ = xdr_zero
; /* cookie, first word */
183 *p
++ = xdr_two
; /* cookie, second word */
184 *p
++ = xdr_two
; /* entry len */
185 memcpy(p
, "..\0\0", 4); /* entry */
187 *p
++ = xdr_one
; /* bitmap length */
188 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
189 *p
++ = htonl(8); /* attribute buffer length */
190 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
192 readdir
->pgbase
= (char *)p
- (char *)start
;
193 readdir
->count
-= readdir
->pgbase
;
194 kunmap_atomic(start
, KM_USER0
);
197 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
199 struct nfs_client
*clp
= server
->nfs_client
;
200 spin_lock(&clp
->cl_lock
);
201 if (time_before(clp
->cl_last_renewal
,timestamp
))
202 clp
->cl_last_renewal
= timestamp
;
203 spin_unlock(&clp
->cl_lock
);
206 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
208 struct nfs_inode
*nfsi
= NFS_I(dir
);
210 spin_lock(&dir
->i_lock
);
211 if (cinfo
->after
!= nfsi
->change_attr
) {
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 nfsi
->cache_change_attribute
= jiffies
;
215 nfsi
->change_attr
= cinfo
->after
;
217 spin_unlock(&dir
->i_lock
);
220 struct nfs4_opendata
{
222 struct nfs_openargs o_arg
;
223 struct nfs_openres o_res
;
224 struct nfs_open_confirmargs c_arg
;
225 struct nfs_open_confirmres c_res
;
226 struct nfs_fattr f_attr
;
227 struct nfs_fattr dir_attr
;
230 struct nfs4_state_owner
*owner
;
231 struct nfs4_state
*state
;
233 unsigned long timestamp
;
234 unsigned int rpc_done
: 1;
240 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
242 p
->o_res
.f_attr
= &p
->f_attr
;
243 p
->o_res
.dir_attr
= &p
->dir_attr
;
244 p
->o_res
.server
= p
->o_arg
.server
;
245 nfs_fattr_init(&p
->f_attr
);
246 nfs_fattr_init(&p
->dir_attr
);
249 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
250 struct nfs4_state_owner
*sp
, int flags
,
251 const struct iattr
*attrs
)
253 struct dentry
*parent
= dget_parent(path
->dentry
);
254 struct inode
*dir
= parent
->d_inode
;
255 struct nfs_server
*server
= NFS_SERVER(dir
);
256 struct nfs4_opendata
*p
;
258 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
261 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
262 if (p
->o_arg
.seqid
== NULL
)
264 p
->path
.mnt
= mntget(path
->mnt
);
265 p
->path
.dentry
= dget(path
->dentry
);
268 atomic_inc(&sp
->so_count
);
269 p
->o_arg
.fh
= NFS_FH(dir
);
270 p
->o_arg
.open_flags
= flags
,
271 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
272 p
->o_arg
.id
= sp
->so_owner_id
.id
;
273 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
274 p
->o_arg
.server
= server
;
275 p
->o_arg
.bitmask
= server
->attr_bitmask
;
276 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
277 if (flags
& O_EXCL
) {
278 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
281 } else if (flags
& O_CREAT
) {
282 p
->o_arg
.u
.attrs
= &p
->attrs
;
283 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
285 p
->c_arg
.fh
= &p
->o_res
.fh
;
286 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
287 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
288 nfs4_init_opendata_res(p
);
298 static void nfs4_opendata_free(struct kref
*kref
)
300 struct nfs4_opendata
*p
= container_of(kref
,
301 struct nfs4_opendata
, kref
);
303 nfs_free_seqid(p
->o_arg
.seqid
);
304 if (p
->state
!= NULL
)
305 nfs4_put_open_state(p
->state
);
306 nfs4_put_state_owner(p
->owner
);
308 dput(p
->path
.dentry
);
313 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
316 kref_put(&p
->kref
, nfs4_opendata_free
);
319 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
324 rpc_clnt_sigmask(task
->tk_client
, &oldset
);
325 ret
= rpc_wait_for_completion_task(task
);
326 rpc_clnt_sigunmask(task
->tk_client
, &oldset
);
330 static int can_open_cached(struct nfs4_state
*state
, int mode
)
333 switch (mode
& (FMODE_READ
|FMODE_WRITE
|O_EXCL
)) {
335 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0;
338 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0;
340 case FMODE_READ
|FMODE_WRITE
:
341 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0;
346 static int can_open_delegated(struct nfs_delegation
*delegation
, mode_t open_flags
)
348 if ((delegation
->type
& open_flags
) != open_flags
)
350 if (delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)
355 static void update_open_stateflags(struct nfs4_state
*state
, mode_t open_flags
)
357 switch (open_flags
) {
364 case FMODE_READ
|FMODE_WRITE
:
367 nfs4_state_set_mode_locked(state
, state
->state
| open_flags
);
370 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, int open_flags
)
372 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
373 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
374 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
375 switch (open_flags
) {
377 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
380 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
382 case FMODE_READ
|FMODE_WRITE
:
383 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
387 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, int open_flags
)
389 write_seqlock(&state
->seqlock
);
390 nfs_set_open_stateid_locked(state
, stateid
, open_flags
);
391 write_sequnlock(&state
->seqlock
);
394 static void update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*deleg_stateid
, int open_flags
)
396 open_flags
&= (FMODE_READ
|FMODE_WRITE
);
398 * Protect the call to nfs4_state_set_mode_locked and
399 * serialise the stateid update
401 write_seqlock(&state
->seqlock
);
402 if (deleg_stateid
!= NULL
) {
403 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
404 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
406 if (open_stateid
!= NULL
)
407 nfs_set_open_stateid_locked(state
, open_stateid
, open_flags
);
408 write_sequnlock(&state
->seqlock
);
409 spin_lock(&state
->owner
->so_lock
);
410 update_open_stateflags(state
, open_flags
);
411 spin_unlock(&state
->owner
->so_lock
);
414 static void nfs4_return_incompatible_delegation(struct inode
*inode
, mode_t open_flags
)
416 struct nfs_delegation
*delegation
;
419 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
420 if (delegation
== NULL
|| (delegation
->type
& open_flags
) == open_flags
) {
425 nfs_inode_return_delegation(inode
);
428 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
430 struct nfs4_state
*state
= opendata
->state
;
431 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
432 struct nfs_delegation
*delegation
;
433 int open_mode
= opendata
->o_arg
.open_flags
& (FMODE_READ
|FMODE_WRITE
|O_EXCL
);
434 nfs4_stateid stateid
;
438 delegation
= rcu_dereference(nfsi
->delegation
);
440 if (can_open_cached(state
, open_mode
)) {
441 spin_lock(&state
->owner
->so_lock
);
442 if (can_open_cached(state
, open_mode
)) {
443 update_open_stateflags(state
, open_mode
);
444 spin_unlock(&state
->owner
->so_lock
);
446 goto out_return_state
;
448 spin_unlock(&state
->owner
->so_lock
);
450 if (delegation
== NULL
)
452 if (!can_open_delegated(delegation
, open_mode
))
454 /* Save the delegation */
455 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
458 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
464 delegation
= rcu_dereference(nfsi
->delegation
);
465 /* If no delegation, try a cached open */
466 if (delegation
== NULL
)
468 /* Is the delegation still valid? */
469 if (memcmp(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
)) != 0)
472 update_open_stateid(state
, NULL
, &stateid
, open_mode
);
473 goto out_return_state
;
479 atomic_inc(&state
->count
);
483 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
486 struct nfs4_state
*state
= NULL
;
487 struct nfs_delegation
*delegation
;
488 nfs4_stateid
*deleg_stateid
= NULL
;
491 if (!data
->rpc_done
) {
492 state
= nfs4_try_open_cached(data
);
497 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
499 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
500 ret
= PTR_ERR(inode
);
504 state
= nfs4_get_open_state(inode
, data
->owner
);
507 if (data
->o_res
.delegation_type
!= 0) {
508 int delegation_flags
= 0;
511 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
513 delegation_flags
= delegation
->flags
;
515 if (!(delegation_flags
& NFS_DELEGATION_NEED_RECLAIM
))
516 nfs_inode_set_delegation(state
->inode
,
517 data
->owner
->so_cred
,
520 nfs_inode_reclaim_delegation(state
->inode
,
521 data
->owner
->so_cred
,
525 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
526 if (delegation
!= NULL
)
527 deleg_stateid
= &delegation
->stateid
;
528 update_open_stateid(state
, &data
->o_res
.stateid
, deleg_stateid
, data
->o_arg
.open_flags
);
539 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
541 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
542 struct nfs_open_context
*ctx
;
544 spin_lock(&state
->inode
->i_lock
);
545 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
546 if (ctx
->state
!= state
)
548 get_nfs_open_context(ctx
);
549 spin_unlock(&state
->inode
->i_lock
);
552 spin_unlock(&state
->inode
->i_lock
);
553 return ERR_PTR(-ENOENT
);
556 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
558 struct nfs4_opendata
*opendata
;
560 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, NULL
);
561 if (opendata
== NULL
)
562 return ERR_PTR(-ENOMEM
);
563 opendata
->state
= state
;
564 atomic_inc(&state
->count
);
568 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, mode_t openflags
, struct nfs4_state
**res
)
570 struct nfs4_state
*newstate
;
573 opendata
->o_arg
.open_flags
= openflags
;
574 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
575 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
576 nfs4_init_opendata_res(opendata
);
577 ret
= _nfs4_proc_open(opendata
);
580 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
581 if (IS_ERR(newstate
))
582 return PTR_ERR(newstate
);
583 nfs4_close_state(&opendata
->path
, newstate
, openflags
);
588 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
590 struct nfs4_state
*newstate
;
593 /* memory barrier prior to reading state->n_* */
594 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
596 if (state
->n_rdwr
!= 0) {
597 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
600 if (newstate
!= state
)
603 if (state
->n_wronly
!= 0) {
604 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
607 if (newstate
!= state
)
610 if (state
->n_rdonly
!= 0) {
611 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
614 if (newstate
!= state
)
618 * We may have performed cached opens for all three recoveries.
619 * Check if we need to update the current stateid.
621 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
622 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
623 write_seqlock(&state
->seqlock
);
624 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
625 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
626 write_sequnlock(&state
->seqlock
);
633 * reclaim state on the server after a reboot.
635 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
637 struct nfs_delegation
*delegation
;
638 struct nfs4_opendata
*opendata
;
639 int delegation_type
= 0;
642 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
643 if (IS_ERR(opendata
))
644 return PTR_ERR(opendata
);
645 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
646 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
648 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
649 if (delegation
!= NULL
&& (delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
) != 0)
650 delegation_type
= delegation
->type
;
652 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
653 status
= nfs4_open_recover(opendata
, state
);
654 nfs4_opendata_put(opendata
);
658 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
660 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
661 struct nfs4_exception exception
= { };
664 err
= _nfs4_do_open_reclaim(ctx
, state
);
665 if (err
!= -NFS4ERR_DELAY
)
667 nfs4_handle_exception(server
, err
, &exception
);
668 } while (exception
.retry
);
672 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
674 struct nfs_open_context
*ctx
;
677 ctx
= nfs4_state_find_open_context(state
);
680 ret
= nfs4_do_open_reclaim(ctx
, state
);
681 put_nfs_open_context(ctx
);
685 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
687 struct nfs4_opendata
*opendata
;
690 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
691 if (IS_ERR(opendata
))
692 return PTR_ERR(opendata
);
693 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
694 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
695 sizeof(opendata
->o_arg
.u
.delegation
.data
));
696 ret
= nfs4_open_recover(opendata
, state
);
697 nfs4_opendata_put(opendata
);
701 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
703 struct nfs4_exception exception
= { };
704 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
707 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
711 case -NFS4ERR_STALE_CLIENTID
:
712 case -NFS4ERR_STALE_STATEID
:
713 case -NFS4ERR_EXPIRED
:
714 /* Don't recall a delegation if it was lost */
715 nfs4_schedule_state_recovery(server
->nfs_client
);
718 err
= nfs4_handle_exception(server
, err
, &exception
);
719 } while (exception
.retry
);
723 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
725 struct nfs4_opendata
*data
= calldata
;
726 struct rpc_message msg
= {
727 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
728 .rpc_argp
= &data
->c_arg
,
729 .rpc_resp
= &data
->c_res
,
730 .rpc_cred
= data
->owner
->so_cred
,
732 data
->timestamp
= jiffies
;
733 rpc_call_setup(task
, &msg
, 0);
736 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
738 struct nfs4_opendata
*data
= calldata
;
740 data
->rpc_status
= task
->tk_status
;
741 if (RPC_ASSASSINATED(task
))
743 if (data
->rpc_status
== 0) {
744 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
745 sizeof(data
->o_res
.stateid
.data
));
746 renew_lease(data
->o_res
.server
, data
->timestamp
);
749 nfs_confirm_seqid(&data
->owner
->so_seqid
, data
->rpc_status
);
750 nfs_increment_open_seqid(data
->rpc_status
, data
->c_arg
.seqid
);
753 static void nfs4_open_confirm_release(void *calldata
)
755 struct nfs4_opendata
*data
= calldata
;
756 struct nfs4_state
*state
= NULL
;
758 /* If this request hasn't been cancelled, do nothing */
759 if (data
->cancelled
== 0)
761 /* In case of error, no cleanup! */
764 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
765 state
= nfs4_opendata_to_nfs4_state(data
);
767 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
769 nfs4_opendata_put(data
);
772 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
773 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
774 .rpc_call_done
= nfs4_open_confirm_done
,
775 .rpc_release
= nfs4_open_confirm_release
,
779 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
781 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
783 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
784 struct rpc_task
*task
;
787 kref_get(&data
->kref
);
789 data
->rpc_status
= 0;
790 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_confirm_ops
, data
);
792 return PTR_ERR(task
);
793 status
= nfs4_wait_for_completion_rpc_task(task
);
798 status
= data
->rpc_status
;
803 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
805 struct nfs4_opendata
*data
= calldata
;
806 struct nfs4_state_owner
*sp
= data
->owner
;
807 struct rpc_message msg
= {
808 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
809 .rpc_argp
= &data
->o_arg
,
810 .rpc_resp
= &data
->o_res
,
811 .rpc_cred
= sp
->so_cred
,
814 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
817 * Check if we still need to send an OPEN call, or if we can use
818 * a delegation instead.
820 if (data
->state
!= NULL
) {
821 struct nfs_delegation
*delegation
;
823 if (can_open_cached(data
->state
, data
->o_arg
.open_flags
& (FMODE_READ
|FMODE_WRITE
|O_EXCL
)))
826 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
827 if (delegation
!= NULL
&&
828 (delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
) == 0) {
834 /* Update sequence id. */
835 data
->o_arg
.id
= sp
->so_owner_id
.id
;
836 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
837 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
838 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
839 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
841 data
->timestamp
= jiffies
;
842 rpc_call_setup(task
, &msg
, 0);
845 task
->tk_action
= NULL
;
849 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
851 struct nfs4_opendata
*data
= calldata
;
853 data
->rpc_status
= task
->tk_status
;
854 if (RPC_ASSASSINATED(task
))
856 if (task
->tk_status
== 0) {
857 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
861 data
->rpc_status
= -ELOOP
;
864 data
->rpc_status
= -EISDIR
;
867 data
->rpc_status
= -ENOTDIR
;
869 renew_lease(data
->o_res
.server
, data
->timestamp
);
870 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
871 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
873 nfs_increment_open_seqid(data
->rpc_status
, data
->o_arg
.seqid
);
877 static void nfs4_open_release(void *calldata
)
879 struct nfs4_opendata
*data
= calldata
;
880 struct nfs4_state
*state
= NULL
;
882 /* If this request hasn't been cancelled, do nothing */
883 if (data
->cancelled
== 0)
885 /* In case of error, no cleanup! */
886 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
888 /* In case we need an open_confirm, no cleanup! */
889 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
891 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
892 state
= nfs4_opendata_to_nfs4_state(data
);
894 nfs4_close_state(&data
->path
, state
, data
->o_arg
.open_flags
);
896 nfs4_opendata_put(data
);
899 static const struct rpc_call_ops nfs4_open_ops
= {
900 .rpc_call_prepare
= nfs4_open_prepare
,
901 .rpc_call_done
= nfs4_open_done
,
902 .rpc_release
= nfs4_open_release
,
906 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
908 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
910 struct inode
*dir
= data
->dir
->d_inode
;
911 struct nfs_server
*server
= NFS_SERVER(dir
);
912 struct nfs_openargs
*o_arg
= &data
->o_arg
;
913 struct nfs_openres
*o_res
= &data
->o_res
;
914 struct rpc_task
*task
;
917 kref_get(&data
->kref
);
919 data
->rpc_status
= 0;
921 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_ops
, data
);
923 return PTR_ERR(task
);
924 status
= nfs4_wait_for_completion_rpc_task(task
);
929 status
= data
->rpc_status
;
931 if (status
!= 0 || !data
->rpc_done
)
934 if (o_res
->fh
.size
== 0)
935 _nfs4_proc_lookup(dir
, o_arg
->name
, &o_res
->fh
, o_res
->f_attr
);
937 if (o_arg
->open_flags
& O_CREAT
) {
938 update_changeattr(dir
, &o_res
->cinfo
);
939 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
941 nfs_refresh_inode(dir
, o_res
->dir_attr
);
942 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
943 status
= _nfs4_proc_open_confirm(data
);
947 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
948 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
952 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
954 struct nfs_client
*clp
= server
->nfs_client
;
958 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
961 if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
))
963 nfs4_schedule_state_recovery(clp
);
970 * reclaim state on the server after a network partition.
971 * Assumes caller holds the appropriate lock
973 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
975 struct nfs4_opendata
*opendata
;
978 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
979 if (IS_ERR(opendata
))
980 return PTR_ERR(opendata
);
981 ret
= nfs4_open_recover(opendata
, state
);
982 if (ret
== -ESTALE
) {
983 /* Invalidate the state owner so we don't ever use it again */
984 nfs4_drop_state_owner(state
->owner
);
985 d_drop(ctx
->path
.dentry
);
987 nfs4_opendata_put(opendata
);
991 static inline int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
993 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
994 struct nfs4_exception exception
= { };
998 err
= _nfs4_open_expired(ctx
, state
);
999 if (err
== -NFS4ERR_DELAY
)
1000 nfs4_handle_exception(server
, err
, &exception
);
1001 } while (exception
.retry
);
1005 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1007 struct nfs_open_context
*ctx
;
1010 ctx
= nfs4_state_find_open_context(state
);
1012 return PTR_ERR(ctx
);
1013 ret
= nfs4_do_open_expired(ctx
, state
);
1014 put_nfs_open_context(ctx
);
1019 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1020 * fields corresponding to attributes that were used to store the verifier.
1021 * Make sure we clobber those fields in the later setattr call
1023 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1025 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1026 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1027 sattr
->ia_valid
|= ATTR_ATIME
;
1029 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1030 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1031 sattr
->ia_valid
|= ATTR_MTIME
;
1035 * Returns a referenced nfs4_state
1037 static int _nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
1039 struct nfs4_state_owner
*sp
;
1040 struct nfs4_state
*state
= NULL
;
1041 struct nfs_server
*server
= NFS_SERVER(dir
);
1042 struct nfs_client
*clp
= server
->nfs_client
;
1043 struct nfs4_opendata
*opendata
;
1046 /* Protect against reboot recovery conflicts */
1048 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1049 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1052 status
= nfs4_recover_expired_lease(server
);
1054 goto err_put_state_owner
;
1055 if (path
->dentry
->d_inode
!= NULL
)
1056 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, flags
& (FMODE_READ
|FMODE_WRITE
));
1057 down_read(&clp
->cl_sem
);
1059 opendata
= nfs4_opendata_alloc(path
, sp
, flags
, sattr
);
1060 if (opendata
== NULL
)
1061 goto err_release_rwsem
;
1063 if (path
->dentry
->d_inode
!= NULL
)
1064 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1066 status
= _nfs4_proc_open(opendata
);
1068 goto err_opendata_put
;
1070 if (opendata
->o_arg
.open_flags
& O_EXCL
)
1071 nfs4_exclusive_attrset(opendata
, sattr
);
1073 state
= nfs4_opendata_to_nfs4_state(opendata
);
1074 status
= PTR_ERR(state
);
1076 goto err_opendata_put
;
1077 nfs4_opendata_put(opendata
);
1078 nfs4_put_state_owner(sp
);
1079 up_read(&clp
->cl_sem
);
1083 nfs4_opendata_put(opendata
);
1085 up_read(&clp
->cl_sem
);
1086 err_put_state_owner
:
1087 nfs4_put_state_owner(sp
);
1094 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct path
*path
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1096 struct nfs4_exception exception
= { };
1097 struct nfs4_state
*res
;
1101 status
= _nfs4_do_open(dir
, path
, flags
, sattr
, cred
, &res
);
1104 /* NOTE: BAD_SEQID means the server and client disagree about the
1105 * book-keeping w.r.t. state-changing operations
1106 * (OPEN/CLOSE/LOCK/LOCKU...)
1107 * It is actually a sign of a bug on the client or on the server.
1109 * If we receive a BAD_SEQID error in the particular case of
1110 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1111 * have unhashed the old state_owner for us, and that we can
1112 * therefore safely retry using a new one. We should still warn
1113 * the user though...
1115 if (status
== -NFS4ERR_BAD_SEQID
) {
1116 printk(KERN_WARNING
"NFS: v4 server %s "
1117 " returned a bad sequence-id error!\n",
1118 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1119 exception
.retry
= 1;
1123 * BAD_STATEID on OPEN means that the server cancelled our
1124 * state before it received the OPEN_CONFIRM.
1125 * Recover by retrying the request as per the discussion
1126 * on Page 181 of RFC3530.
1128 if (status
== -NFS4ERR_BAD_STATEID
) {
1129 exception
.retry
= 1;
1132 if (status
== -EAGAIN
) {
1133 /* We must have found a delegation */
1134 exception
.retry
= 1;
1137 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1138 status
, &exception
));
1139 } while (exception
.retry
);
1143 static int _nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1144 struct iattr
*sattr
, struct nfs4_state
*state
)
1146 struct nfs_server
*server
= NFS_SERVER(inode
);
1147 struct nfs_setattrargs arg
= {
1148 .fh
= NFS_FH(inode
),
1151 .bitmask
= server
->attr_bitmask
,
1153 struct nfs_setattrres res
= {
1157 struct rpc_message msg
= {
1158 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1162 unsigned long timestamp
= jiffies
;
1165 nfs_fattr_init(fattr
);
1167 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1168 /* Use that stateid */
1169 } else if (state
!= NULL
) {
1170 msg
.rpc_cred
= state
->owner
->so_cred
;
1171 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1173 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1175 status
= rpc_call_sync(server
->client
, &msg
, 0);
1176 if (status
== 0 && state
!= NULL
)
1177 renew_lease(server
, timestamp
);
1181 static int nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1182 struct iattr
*sattr
, struct nfs4_state
*state
)
1184 struct nfs_server
*server
= NFS_SERVER(inode
);
1185 struct nfs4_exception exception
= { };
1188 err
= nfs4_handle_exception(server
,
1189 _nfs4_do_setattr(inode
, fattr
, sattr
, state
),
1191 } while (exception
.retry
);
1195 struct nfs4_closedata
{
1197 struct inode
*inode
;
1198 struct nfs4_state
*state
;
1199 struct nfs_closeargs arg
;
1200 struct nfs_closeres res
;
1201 struct nfs_fattr fattr
;
1202 unsigned long timestamp
;
1205 static void nfs4_free_closedata(void *data
)
1207 struct nfs4_closedata
*calldata
= data
;
1208 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1210 nfs4_put_open_state(calldata
->state
);
1211 nfs_free_seqid(calldata
->arg
.seqid
);
1212 nfs4_put_state_owner(sp
);
1213 dput(calldata
->path
.dentry
);
1214 mntput(calldata
->path
.mnt
);
1218 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1220 struct nfs4_closedata
*calldata
= data
;
1221 struct nfs4_state
*state
= calldata
->state
;
1222 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1224 if (RPC_ASSASSINATED(task
))
1226 /* hmm. we are done with the inode, and in the process of freeing
1227 * the state_owner. we keep this around to process errors
1229 nfs_increment_open_seqid(task
->tk_status
, calldata
->arg
.seqid
);
1230 switch (task
->tk_status
) {
1232 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1233 renew_lease(server
, calldata
->timestamp
);
1235 case -NFS4ERR_STALE_STATEID
:
1236 case -NFS4ERR_EXPIRED
:
1239 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
1240 rpc_restart_call(task
);
1244 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1247 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1249 struct nfs4_closedata
*calldata
= data
;
1250 struct nfs4_state
*state
= calldata
->state
;
1251 struct rpc_message msg
= {
1252 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1253 .rpc_argp
= &calldata
->arg
,
1254 .rpc_resp
= &calldata
->res
,
1255 .rpc_cred
= state
->owner
->so_cred
,
1257 int clear_rd
, clear_wr
, clear_rdwr
;
1259 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1262 clear_rd
= clear_wr
= clear_rdwr
= 0;
1263 spin_lock(&state
->owner
->so_lock
);
1264 /* Calculate the change in open mode */
1265 if (state
->n_rdwr
== 0) {
1266 if (state
->n_rdonly
== 0) {
1267 clear_rd
|= test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1268 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1270 if (state
->n_wronly
== 0) {
1271 clear_wr
|= test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1272 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1275 spin_unlock(&state
->owner
->so_lock
);
1276 if (!clear_rd
&& !clear_wr
&& !clear_rdwr
) {
1277 /* Note: exit _without_ calling nfs4_close_done */
1278 task
->tk_action
= NULL
;
1281 nfs_fattr_init(calldata
->res
.fattr
);
1282 if (test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0) {
1283 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1284 calldata
->arg
.open_flags
= FMODE_READ
;
1285 } else if (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0) {
1286 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1287 calldata
->arg
.open_flags
= FMODE_WRITE
;
1289 calldata
->timestamp
= jiffies
;
1290 rpc_call_setup(task
, &msg
, 0);
1293 static const struct rpc_call_ops nfs4_close_ops
= {
1294 .rpc_call_prepare
= nfs4_close_prepare
,
1295 .rpc_call_done
= nfs4_close_done
,
1296 .rpc_release
= nfs4_free_closedata
,
1300 * It is possible for data to be read/written from a mem-mapped file
1301 * after the sys_close call (which hits the vfs layer as a flush).
1302 * This means that we can't safely call nfsv4 close on a file until
1303 * the inode is cleared. This in turn means that we are not good
1304 * NFSv4 citizens - we do not indicate to the server to update the file's
1305 * share state even when we are done with one of the three share
1306 * stateid's in the inode.
1308 * NOTE: Caller must be holding the sp->so_owner semaphore!
1310 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
)
1312 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1313 struct nfs4_closedata
*calldata
;
1314 struct nfs4_state_owner
*sp
= state
->owner
;
1315 struct rpc_task
*task
;
1316 int status
= -ENOMEM
;
1318 calldata
= kmalloc(sizeof(*calldata
), GFP_KERNEL
);
1319 if (calldata
== NULL
)
1321 calldata
->inode
= state
->inode
;
1322 calldata
->state
= state
;
1323 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1324 calldata
->arg
.stateid
= &state
->open_stateid
;
1325 /* Serialization for the sequence id */
1326 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1327 if (calldata
->arg
.seqid
== NULL
)
1328 goto out_free_calldata
;
1329 calldata
->arg
.bitmask
= server
->attr_bitmask
;
1330 calldata
->res
.fattr
= &calldata
->fattr
;
1331 calldata
->res
.server
= server
;
1332 calldata
->path
.mnt
= mntget(path
->mnt
);
1333 calldata
->path
.dentry
= dget(path
->dentry
);
1335 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_close_ops
, calldata
);
1337 return PTR_ERR(task
);
1343 nfs4_put_open_state(state
);
1344 nfs4_put_state_owner(sp
);
1348 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
)
1353 /* If the open_intent is for execute, we have an extra check to make */
1354 if (nd
->intent
.open
.flags
& FMODE_EXEC
) {
1355 ret
= nfs_may_open(state
->inode
,
1356 state
->owner
->so_cred
,
1357 nd
->intent
.open
.flags
);
1361 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1362 if (!IS_ERR(filp
)) {
1363 struct nfs_open_context
*ctx
;
1364 ctx
= nfs_file_open_context(filp
);
1368 ret
= PTR_ERR(filp
);
1370 nfs4_close_state(path
, state
, nd
->intent
.open
.flags
);
1375 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1377 struct path path
= {
1382 struct rpc_cred
*cred
;
1383 struct nfs4_state
*state
;
1386 if (nd
->flags
& LOOKUP_CREATE
) {
1387 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1388 attr
.ia_valid
= ATTR_MODE
;
1389 if (!IS_POSIXACL(dir
))
1390 attr
.ia_mode
&= ~current
->fs
->umask
;
1393 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1396 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1398 return (struct dentry
*)cred
;
1399 state
= nfs4_do_open(dir
, &path
, nd
->intent
.open
.flags
, &attr
, cred
);
1401 if (IS_ERR(state
)) {
1402 if (PTR_ERR(state
) == -ENOENT
)
1403 d_add(dentry
, NULL
);
1404 return (struct dentry
*)state
;
1406 res
= d_add_unique(dentry
, igrab(state
->inode
));
1409 nfs4_intent_set_file(nd
, &path
, state
);
1414 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1416 struct path path
= {
1420 struct rpc_cred
*cred
;
1421 struct nfs4_state
*state
;
1423 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1425 return PTR_ERR(cred
);
1426 state
= nfs4_do_open(dir
, &path
, openflags
, NULL
, cred
);
1428 if (IS_ERR(state
)) {
1429 switch (PTR_ERR(state
)) {
1435 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1441 if (state
->inode
== dentry
->d_inode
) {
1442 nfs4_intent_set_file(nd
, &path
, state
);
1445 nfs4_close_state(&path
, state
, openflags
);
1452 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1454 struct nfs4_server_caps_res res
= {};
1455 struct rpc_message msg
= {
1456 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1457 .rpc_argp
= fhandle
,
1462 status
= rpc_call_sync(server
->client
, &msg
, 0);
1464 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
1465 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
1466 server
->caps
|= NFS_CAP_ACLS
;
1467 if (res
.has_links
!= 0)
1468 server
->caps
|= NFS_CAP_HARDLINKS
;
1469 if (res
.has_symlinks
!= 0)
1470 server
->caps
|= NFS_CAP_SYMLINKS
;
1471 server
->acl_bitmask
= res
.acl_bitmask
;
1476 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1478 struct nfs4_exception exception
= { };
1481 err
= nfs4_handle_exception(server
,
1482 _nfs4_server_capabilities(server
, fhandle
),
1484 } while (exception
.retry
);
1488 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1489 struct nfs_fsinfo
*info
)
1491 struct nfs4_lookup_root_arg args
= {
1492 .bitmask
= nfs4_fattr_bitmap
,
1494 struct nfs4_lookup_res res
= {
1496 .fattr
= info
->fattr
,
1499 struct rpc_message msg
= {
1500 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
1504 nfs_fattr_init(info
->fattr
);
1505 return rpc_call_sync(server
->client
, &msg
, 0);
1508 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1509 struct nfs_fsinfo
*info
)
1511 struct nfs4_exception exception
= { };
1514 err
= nfs4_handle_exception(server
,
1515 _nfs4_lookup_root(server
, fhandle
, info
),
1517 } while (exception
.retry
);
1522 * get the file handle for the "/" directory on the server
1524 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1525 struct nfs_fsinfo
*info
)
1529 status
= nfs4_lookup_root(server
, fhandle
, info
);
1531 status
= nfs4_server_capabilities(server
, fhandle
);
1533 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
1534 return nfs4_map_errors(status
);
1538 * Get locations and (maybe) other attributes of a referral.
1539 * Note that we'll actually follow the referral later when
1540 * we detect fsid mismatch in inode revalidation
1542 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
1544 int status
= -ENOMEM
;
1545 struct page
*page
= NULL
;
1546 struct nfs4_fs_locations
*locations
= NULL
;
1548 page
= alloc_page(GFP_KERNEL
);
1551 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
1552 if (locations
== NULL
)
1555 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
1558 /* Make sure server returned a different fsid for the referral */
1559 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
1560 dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__
, name
->name
);
1565 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
1566 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
1568 fattr
->mode
= S_IFDIR
;
1569 memset(fhandle
, 0, sizeof(struct nfs_fh
));
1578 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1580 struct nfs4_getattr_arg args
= {
1582 .bitmask
= server
->attr_bitmask
,
1584 struct nfs4_getattr_res res
= {
1588 struct rpc_message msg
= {
1589 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
1594 nfs_fattr_init(fattr
);
1595 return rpc_call_sync(server
->client
, &msg
, 0);
1598 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1600 struct nfs4_exception exception
= { };
1603 err
= nfs4_handle_exception(server
,
1604 _nfs4_proc_getattr(server
, fhandle
, fattr
),
1606 } while (exception
.retry
);
1611 * The file is not closed if it is opened due to the a request to change
1612 * the size of the file. The open call will not be needed once the
1613 * VFS layer lookup-intents are implemented.
1615 * Close is called when the inode is destroyed.
1616 * If we haven't opened the file for O_WRONLY, we
1617 * need to in the size_change case to obtain a stateid.
1620 * Because OPEN is always done by name in nfsv4, it is
1621 * possible that we opened a different file by the same
1622 * name. We can recognize this race condition, but we
1623 * can't do anything about it besides returning an error.
1625 * This will be fixed with VFS changes (lookup-intent).
1628 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
1629 struct iattr
*sattr
)
1631 struct rpc_cred
*cred
;
1632 struct inode
*inode
= dentry
->d_inode
;
1633 struct nfs_open_context
*ctx
;
1634 struct nfs4_state
*state
= NULL
;
1637 nfs_fattr_init(fattr
);
1639 cred
= rpcauth_lookupcred(NFS_CLIENT(inode
)->cl_auth
, 0);
1641 return PTR_ERR(cred
);
1643 /* Search for an existing open(O_WRITE) file */
1644 ctx
= nfs_find_open_context(inode
, cred
, FMODE_WRITE
);
1648 status
= nfs4_do_setattr(inode
, fattr
, sattr
, state
);
1650 nfs_setattr_update_inode(inode
, sattr
);
1652 put_nfs_open_context(ctx
);
1657 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
1658 const struct qstr
*name
, struct nfs_fh
*fhandle
,
1659 struct nfs_fattr
*fattr
)
1662 struct nfs4_lookup_arg args
= {
1663 .bitmask
= server
->attr_bitmask
,
1667 struct nfs4_lookup_res res
= {
1672 struct rpc_message msg
= {
1673 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1678 nfs_fattr_init(fattr
);
1680 dprintk("NFS call lookupfh %s\n", name
->name
);
1681 status
= rpc_call_sync(server
->client
, &msg
, 0);
1682 dprintk("NFS reply lookupfh: %d\n", status
);
1686 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
1687 struct qstr
*name
, struct nfs_fh
*fhandle
,
1688 struct nfs_fattr
*fattr
)
1690 struct nfs4_exception exception
= { };
1693 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
1695 if (err
== -NFS4ERR_MOVED
) {
1699 err
= nfs4_handle_exception(server
, err
, &exception
);
1700 } while (exception
.retry
);
1704 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
1705 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1709 dprintk("NFS call lookup %s\n", name
->name
);
1710 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
1711 if (status
== -NFS4ERR_MOVED
)
1712 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
1713 dprintk("NFS reply lookup: %d\n", status
);
1717 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1719 struct nfs4_exception exception
= { };
1722 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1723 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
1725 } while (exception
.retry
);
1729 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1731 struct nfs_server
*server
= NFS_SERVER(inode
);
1732 struct nfs_fattr fattr
;
1733 struct nfs4_accessargs args
= {
1734 .fh
= NFS_FH(inode
),
1735 .bitmask
= server
->attr_bitmask
,
1737 struct nfs4_accessres res
= {
1741 struct rpc_message msg
= {
1742 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
1745 .rpc_cred
= entry
->cred
,
1747 int mode
= entry
->mask
;
1751 * Determine which access bits we want to ask for...
1753 if (mode
& MAY_READ
)
1754 args
.access
|= NFS4_ACCESS_READ
;
1755 if (S_ISDIR(inode
->i_mode
)) {
1756 if (mode
& MAY_WRITE
)
1757 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
1758 if (mode
& MAY_EXEC
)
1759 args
.access
|= NFS4_ACCESS_LOOKUP
;
1761 if (mode
& MAY_WRITE
)
1762 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
1763 if (mode
& MAY_EXEC
)
1764 args
.access
|= NFS4_ACCESS_EXECUTE
;
1766 nfs_fattr_init(&fattr
);
1767 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1770 if (res
.access
& NFS4_ACCESS_READ
)
1771 entry
->mask
|= MAY_READ
;
1772 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
1773 entry
->mask
|= MAY_WRITE
;
1774 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
1775 entry
->mask
|= MAY_EXEC
;
1776 nfs_refresh_inode(inode
, &fattr
);
1781 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1783 struct nfs4_exception exception
= { };
1786 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1787 _nfs4_proc_access(inode
, entry
),
1789 } while (exception
.retry
);
1794 * TODO: For the time being, we don't try to get any attributes
1795 * along with any of the zero-copy operations READ, READDIR,
1798 * In the case of the first three, we want to put the GETATTR
1799 * after the read-type operation -- this is because it is hard
1800 * to predict the length of a GETATTR response in v4, and thus
1801 * align the READ data correctly. This means that the GETATTR
1802 * may end up partially falling into the page cache, and we should
1803 * shift it into the 'tail' of the xdr_buf before processing.
1804 * To do this efficiently, we need to know the total length
1805 * of data received, which doesn't seem to be available outside
1808 * In the case of WRITE, we also want to put the GETATTR after
1809 * the operation -- in this case because we want to make sure
1810 * we get the post-operation mtime and size. This means that
1811 * we can't use xdr_encode_pages() as written: we need a variant
1812 * of it which would leave room in the 'tail' iovec.
1814 * Both of these changes to the XDR layer would in fact be quite
1815 * minor, but I decided to leave them for a subsequent patch.
1817 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1818 unsigned int pgbase
, unsigned int pglen
)
1820 struct nfs4_readlink args
= {
1821 .fh
= NFS_FH(inode
),
1826 struct rpc_message msg
= {
1827 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
1832 return rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1835 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1836 unsigned int pgbase
, unsigned int pglen
)
1838 struct nfs4_exception exception
= { };
1841 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1842 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
1844 } while (exception
.retry
);
1850 * We will need to arrange for the VFS layer to provide an atomic open.
1851 * Until then, this create/open method is prone to inefficiency and race
1852 * conditions due to the lookup, create, and open VFS calls from sys_open()
1853 * placed on the wire.
1855 * Given the above sorry state of affairs, I'm simply sending an OPEN.
1856 * The file will be opened again in the subsequent VFS open call
1857 * (nfs4_proc_file_open).
1859 * The open for read will just hang around to be used by any process that
1860 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
1864 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
1865 int flags
, struct nameidata
*nd
)
1867 struct path path
= {
1871 struct nfs4_state
*state
;
1872 struct rpc_cred
*cred
;
1875 cred
= rpcauth_lookupcred(NFS_CLIENT(dir
)->cl_auth
, 0);
1877 status
= PTR_ERR(cred
);
1880 state
= nfs4_do_open(dir
, &path
, flags
, sattr
, cred
);
1883 if (IS_ERR(state
)) {
1884 status
= PTR_ERR(state
);
1887 d_add(dentry
, igrab(state
->inode
));
1888 if (flags
& O_EXCL
) {
1889 struct nfs_fattr fattr
;
1890 status
= nfs4_do_setattr(state
->inode
, &fattr
, sattr
, state
);
1892 nfs_setattr_update_inode(state
->inode
, sattr
);
1893 nfs_post_op_update_inode(state
->inode
, &fattr
);
1895 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
1896 status
= nfs4_intent_set_file(nd
, &path
, state
);
1898 nfs4_close_state(&path
, state
, flags
);
1903 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1905 struct nfs_server
*server
= NFS_SERVER(dir
);
1906 struct nfs_removeargs args
= {
1908 .name
.len
= name
->len
,
1909 .name
.name
= name
->name
,
1910 .bitmask
= server
->attr_bitmask
,
1912 struct nfs_removeres res
= {
1915 struct rpc_message msg
= {
1916 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
1922 nfs_fattr_init(&res
.dir_attr
);
1923 status
= rpc_call_sync(server
->client
, &msg
, 0);
1925 update_changeattr(dir
, &res
.cinfo
);
1926 nfs_post_op_update_inode(dir
, &res
.dir_attr
);
1931 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1933 struct nfs4_exception exception
= { };
1936 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1937 _nfs4_proc_remove(dir
, name
),
1939 } while (exception
.retry
);
1943 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
1945 struct nfs_server
*server
= NFS_SERVER(dir
);
1946 struct nfs_removeargs
*args
= msg
->rpc_argp
;
1947 struct nfs_removeres
*res
= msg
->rpc_resp
;
1949 args
->bitmask
= server
->attr_bitmask
;
1950 res
->server
= server
;
1951 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
1954 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
1956 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
1958 if (nfs4_async_handle_error(task
, res
->server
) == -EAGAIN
)
1960 update_changeattr(dir
, &res
->cinfo
);
1961 nfs_post_op_update_inode(dir
, &res
->dir_attr
);
1965 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1966 struct inode
*new_dir
, struct qstr
*new_name
)
1968 struct nfs_server
*server
= NFS_SERVER(old_dir
);
1969 struct nfs4_rename_arg arg
= {
1970 .old_dir
= NFS_FH(old_dir
),
1971 .new_dir
= NFS_FH(new_dir
),
1972 .old_name
= old_name
,
1973 .new_name
= new_name
,
1974 .bitmask
= server
->attr_bitmask
,
1976 struct nfs_fattr old_fattr
, new_fattr
;
1977 struct nfs4_rename_res res
= {
1979 .old_fattr
= &old_fattr
,
1980 .new_fattr
= &new_fattr
,
1982 struct rpc_message msg
= {
1983 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
1989 nfs_fattr_init(res
.old_fattr
);
1990 nfs_fattr_init(res
.new_fattr
);
1991 status
= rpc_call_sync(server
->client
, &msg
, 0);
1994 update_changeattr(old_dir
, &res
.old_cinfo
);
1995 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
1996 update_changeattr(new_dir
, &res
.new_cinfo
);
1997 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2002 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2003 struct inode
*new_dir
, struct qstr
*new_name
)
2005 struct nfs4_exception exception
= { };
2008 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2009 _nfs4_proc_rename(old_dir
, old_name
,
2012 } while (exception
.retry
);
2016 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2018 struct nfs_server
*server
= NFS_SERVER(inode
);
2019 struct nfs4_link_arg arg
= {
2020 .fh
= NFS_FH(inode
),
2021 .dir_fh
= NFS_FH(dir
),
2023 .bitmask
= server
->attr_bitmask
,
2025 struct nfs_fattr fattr
, dir_attr
;
2026 struct nfs4_link_res res
= {
2029 .dir_attr
= &dir_attr
,
2031 struct rpc_message msg
= {
2032 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2038 nfs_fattr_init(res
.fattr
);
2039 nfs_fattr_init(res
.dir_attr
);
2040 status
= rpc_call_sync(server
->client
, &msg
, 0);
2042 update_changeattr(dir
, &res
.cinfo
);
2043 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2044 nfs_post_op_update_inode(inode
, res
.fattr
);
2050 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2052 struct nfs4_exception exception
= { };
2055 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2056 _nfs4_proc_link(inode
, dir
, name
),
2058 } while (exception
.retry
);
2062 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2063 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2065 struct nfs_server
*server
= NFS_SERVER(dir
);
2066 struct nfs_fh fhandle
;
2067 struct nfs_fattr fattr
, dir_fattr
;
2068 struct nfs4_create_arg arg
= {
2069 .dir_fh
= NFS_FH(dir
),
2071 .name
= &dentry
->d_name
,
2074 .bitmask
= server
->attr_bitmask
,
2076 struct nfs4_create_res res
= {
2080 .dir_fattr
= &dir_fattr
,
2082 struct rpc_message msg
= {
2083 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
],
2089 if (len
> NFS4_MAXPATHLEN
)
2090 return -ENAMETOOLONG
;
2092 arg
.u
.symlink
.pages
= &page
;
2093 arg
.u
.symlink
.len
= len
;
2094 nfs_fattr_init(&fattr
);
2095 nfs_fattr_init(&dir_fattr
);
2097 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2099 update_changeattr(dir
, &res
.dir_cinfo
);
2100 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2101 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2106 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2107 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2109 struct nfs4_exception exception
= { };
2112 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2113 _nfs4_proc_symlink(dir
, dentry
, page
,
2116 } while (exception
.retry
);
2120 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2121 struct iattr
*sattr
)
2123 struct nfs_server
*server
= NFS_SERVER(dir
);
2124 struct nfs_fh fhandle
;
2125 struct nfs_fattr fattr
, dir_fattr
;
2126 struct nfs4_create_arg arg
= {
2127 .dir_fh
= NFS_FH(dir
),
2129 .name
= &dentry
->d_name
,
2132 .bitmask
= server
->attr_bitmask
,
2134 struct nfs4_create_res res
= {
2138 .dir_fattr
= &dir_fattr
,
2140 struct rpc_message msg
= {
2141 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2147 nfs_fattr_init(&fattr
);
2148 nfs_fattr_init(&dir_fattr
);
2150 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2152 update_changeattr(dir
, &res
.dir_cinfo
);
2153 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2154 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2159 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2160 struct iattr
*sattr
)
2162 struct nfs4_exception exception
= { };
2165 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2166 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2168 } while (exception
.retry
);
2172 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2173 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2175 struct inode
*dir
= dentry
->d_inode
;
2176 struct nfs4_readdir_arg args
= {
2181 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2183 struct nfs4_readdir_res res
;
2184 struct rpc_message msg
= {
2185 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2192 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__
,
2193 dentry
->d_parent
->d_name
.name
,
2194 dentry
->d_name
.name
,
2195 (unsigned long long)cookie
);
2196 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2197 res
.pgbase
= args
.pgbase
;
2198 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2200 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2202 nfs_invalidate_atime(dir
);
2204 dprintk("%s: returns %d\n", __FUNCTION__
, status
);
2208 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2209 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2211 struct nfs4_exception exception
= { };
2214 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2215 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2218 } while (exception
.retry
);
2222 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2223 struct iattr
*sattr
, dev_t rdev
)
2225 struct nfs_server
*server
= NFS_SERVER(dir
);
2227 struct nfs_fattr fattr
, dir_fattr
;
2228 struct nfs4_create_arg arg
= {
2229 .dir_fh
= NFS_FH(dir
),
2231 .name
= &dentry
->d_name
,
2233 .bitmask
= server
->attr_bitmask
,
2235 struct nfs4_create_res res
= {
2239 .dir_fattr
= &dir_fattr
,
2241 struct rpc_message msg
= {
2242 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2247 int mode
= sattr
->ia_mode
;
2249 nfs_fattr_init(&fattr
);
2250 nfs_fattr_init(&dir_fattr
);
2252 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2253 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2255 arg
.ftype
= NF4FIFO
;
2256 else if (S_ISBLK(mode
)) {
2258 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2259 arg
.u
.device
.specdata2
= MINOR(rdev
);
2261 else if (S_ISCHR(mode
)) {
2263 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2264 arg
.u
.device
.specdata2
= MINOR(rdev
);
2267 arg
.ftype
= NF4SOCK
;
2269 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2271 update_changeattr(dir
, &res
.dir_cinfo
);
2272 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2273 status
= nfs_instantiate(dentry
, &fh
, &fattr
);
2278 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2279 struct iattr
*sattr
, dev_t rdev
)
2281 struct nfs4_exception exception
= { };
2284 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2285 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2287 } while (exception
.retry
);
2291 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2292 struct nfs_fsstat
*fsstat
)
2294 struct nfs4_statfs_arg args
= {
2296 .bitmask
= server
->attr_bitmask
,
2298 struct rpc_message msg
= {
2299 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2304 nfs_fattr_init(fsstat
->fattr
);
2305 return rpc_call_sync(server
->client
, &msg
, 0);
2308 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2310 struct nfs4_exception exception
= { };
2313 err
= nfs4_handle_exception(server
,
2314 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2316 } while (exception
.retry
);
2320 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2321 struct nfs_fsinfo
*fsinfo
)
2323 struct nfs4_fsinfo_arg args
= {
2325 .bitmask
= server
->attr_bitmask
,
2327 struct rpc_message msg
= {
2328 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2333 return rpc_call_sync(server
->client
, &msg
, 0);
2336 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2338 struct nfs4_exception exception
= { };
2342 err
= nfs4_handle_exception(server
,
2343 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2345 } while (exception
.retry
);
2349 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2351 nfs_fattr_init(fsinfo
->fattr
);
2352 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2355 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2356 struct nfs_pathconf
*pathconf
)
2358 struct nfs4_pathconf_arg args
= {
2360 .bitmask
= server
->attr_bitmask
,
2362 struct rpc_message msg
= {
2363 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2365 .rpc_resp
= pathconf
,
2368 /* None of the pathconf attributes are mandatory to implement */
2369 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2370 memset(pathconf
, 0, sizeof(*pathconf
));
2374 nfs_fattr_init(pathconf
->fattr
);
2375 return rpc_call_sync(server
->client
, &msg
, 0);
2378 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2379 struct nfs_pathconf
*pathconf
)
2381 struct nfs4_exception exception
= { };
2385 err
= nfs4_handle_exception(server
,
2386 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2388 } while (exception
.retry
);
2392 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2394 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2396 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
2397 rpc_restart_call(task
);
2401 nfs_invalidate_atime(data
->inode
);
2402 if (task
->tk_status
> 0)
2403 renew_lease(server
, data
->timestamp
);
2407 static void nfs4_proc_read_setup(struct nfs_read_data
*data
)
2409 struct rpc_message msg
= {
2410 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
],
2411 .rpc_argp
= &data
->args
,
2412 .rpc_resp
= &data
->res
,
2413 .rpc_cred
= data
->cred
,
2416 data
->timestamp
= jiffies
;
2418 rpc_call_setup(&data
->task
, &msg
, 0);
2421 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2423 struct inode
*inode
= data
->inode
;
2425 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2426 rpc_restart_call(task
);
2429 if (task
->tk_status
>= 0) {
2430 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2431 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
2436 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, int how
)
2438 struct rpc_message msg
= {
2439 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
],
2440 .rpc_argp
= &data
->args
,
2441 .rpc_resp
= &data
->res
,
2442 .rpc_cred
= data
->cred
,
2444 struct inode
*inode
= data
->inode
;
2445 struct nfs_server
*server
= NFS_SERVER(inode
);
2448 if (how
& FLUSH_STABLE
) {
2449 if (!NFS_I(inode
)->ncommit
)
2450 stable
= NFS_FILE_SYNC
;
2452 stable
= NFS_DATA_SYNC
;
2454 stable
= NFS_UNSTABLE
;
2455 data
->args
.stable
= stable
;
2456 data
->args
.bitmask
= server
->attr_bitmask
;
2457 data
->res
.server
= server
;
2459 data
->timestamp
= jiffies
;
2461 /* Finalize the task. */
2462 rpc_call_setup(&data
->task
, &msg
, 0);
2465 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2467 struct inode
*inode
= data
->inode
;
2469 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2470 rpc_restart_call(task
);
2473 if (task
->tk_status
>= 0)
2474 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2478 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, int how
)
2480 struct rpc_message msg
= {
2481 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
],
2482 .rpc_argp
= &data
->args
,
2483 .rpc_resp
= &data
->res
,
2484 .rpc_cred
= data
->cred
,
2486 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2488 data
->args
.bitmask
= server
->attr_bitmask
;
2489 data
->res
.server
= server
;
2491 rpc_call_setup(&data
->task
, &msg
, 0);
2495 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
2496 * standalone procedure for queueing an asynchronous RENEW.
2498 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
2500 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
2501 unsigned long timestamp
= (unsigned long)data
;
2503 if (task
->tk_status
< 0) {
2504 switch (task
->tk_status
) {
2505 case -NFS4ERR_STALE_CLIENTID
:
2506 case -NFS4ERR_EXPIRED
:
2507 case -NFS4ERR_CB_PATH_DOWN
:
2508 nfs4_schedule_state_recovery(clp
);
2512 spin_lock(&clp
->cl_lock
);
2513 if (time_before(clp
->cl_last_renewal
,timestamp
))
2514 clp
->cl_last_renewal
= timestamp
;
2515 spin_unlock(&clp
->cl_lock
);
2518 static const struct rpc_call_ops nfs4_renew_ops
= {
2519 .rpc_call_done
= nfs4_renew_done
,
2522 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2524 struct rpc_message msg
= {
2525 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2530 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
2531 &nfs4_renew_ops
, (void *)jiffies
);
2534 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2536 struct rpc_message msg
= {
2537 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2541 unsigned long now
= jiffies
;
2544 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2547 spin_lock(&clp
->cl_lock
);
2548 if (time_before(clp
->cl_last_renewal
,now
))
2549 clp
->cl_last_renewal
= now
;
2550 spin_unlock(&clp
->cl_lock
);
2554 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
2556 return (server
->caps
& NFS_CAP_ACLS
)
2557 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2558 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
2561 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
2562 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
2565 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
2567 static void buf_to_pages(const void *buf
, size_t buflen
,
2568 struct page
**pages
, unsigned int *pgbase
)
2570 const void *p
= buf
;
2572 *pgbase
= offset_in_page(buf
);
2574 while (p
< buf
+ buflen
) {
2575 *(pages
++) = virt_to_page(p
);
2576 p
+= PAGE_CACHE_SIZE
;
2580 struct nfs4_cached_acl
{
2586 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
2588 struct nfs_inode
*nfsi
= NFS_I(inode
);
2590 spin_lock(&inode
->i_lock
);
2591 kfree(nfsi
->nfs4_acl
);
2592 nfsi
->nfs4_acl
= acl
;
2593 spin_unlock(&inode
->i_lock
);
2596 static void nfs4_zap_acl_attr(struct inode
*inode
)
2598 nfs4_set_cached_acl(inode
, NULL
);
2601 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
2603 struct nfs_inode
*nfsi
= NFS_I(inode
);
2604 struct nfs4_cached_acl
*acl
;
2607 spin_lock(&inode
->i_lock
);
2608 acl
= nfsi
->nfs4_acl
;
2611 if (buf
== NULL
) /* user is just asking for length */
2613 if (acl
->cached
== 0)
2615 ret
= -ERANGE
; /* see getxattr(2) man page */
2616 if (acl
->len
> buflen
)
2618 memcpy(buf
, acl
->data
, acl
->len
);
2622 spin_unlock(&inode
->i_lock
);
2626 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
2628 struct nfs4_cached_acl
*acl
;
2630 if (buf
&& acl_len
<= PAGE_SIZE
) {
2631 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
2635 memcpy(acl
->data
, buf
, acl_len
);
2637 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
2644 nfs4_set_cached_acl(inode
, acl
);
2647 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2649 struct page
*pages
[NFS4ACL_MAXPAGES
];
2650 struct nfs_getaclargs args
= {
2651 .fh
= NFS_FH(inode
),
2655 size_t resp_len
= buflen
;
2657 struct rpc_message msg
= {
2658 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
2660 .rpc_resp
= &resp_len
,
2662 struct page
*localpage
= NULL
;
2665 if (buflen
< PAGE_SIZE
) {
2666 /* As long as we're doing a round trip to the server anyway,
2667 * let's be prepared for a page of acl data. */
2668 localpage
= alloc_page(GFP_KERNEL
);
2669 resp_buf
= page_address(localpage
);
2670 if (localpage
== NULL
)
2672 args
.acl_pages
[0] = localpage
;
2673 args
.acl_pgbase
= 0;
2674 resp_len
= args
.acl_len
= PAGE_SIZE
;
2677 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
2679 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2682 if (resp_len
> args
.acl_len
)
2683 nfs4_write_cached_acl(inode
, NULL
, resp_len
);
2685 nfs4_write_cached_acl(inode
, resp_buf
, resp_len
);
2688 if (resp_len
> buflen
)
2691 memcpy(buf
, resp_buf
, resp_len
);
2696 __free_page(localpage
);
2700 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2702 struct nfs4_exception exception
= { };
2705 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
2708 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
2709 } while (exception
.retry
);
2713 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
2715 struct nfs_server
*server
= NFS_SERVER(inode
);
2718 if (!nfs4_server_supports_acls(server
))
2720 ret
= nfs_revalidate_inode(server
, inode
);
2723 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
2726 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
2729 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2731 struct nfs_server
*server
= NFS_SERVER(inode
);
2732 struct page
*pages
[NFS4ACL_MAXPAGES
];
2733 struct nfs_setaclargs arg
= {
2734 .fh
= NFS_FH(inode
),
2738 struct rpc_message msg
= {
2739 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
2745 if (!nfs4_server_supports_acls(server
))
2747 nfs_inode_return_delegation(inode
);
2748 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
2749 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2750 nfs_zap_caches(inode
);
2754 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2756 struct nfs4_exception exception
= { };
2759 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2760 __nfs4_proc_set_acl(inode
, buf
, buflen
),
2762 } while (exception
.retry
);
2767 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
)
2769 struct nfs_client
*clp
= server
->nfs_client
;
2771 if (!clp
|| task
->tk_status
>= 0)
2773 switch(task
->tk_status
) {
2774 case -NFS4ERR_STALE_CLIENTID
:
2775 case -NFS4ERR_STALE_STATEID
:
2776 case -NFS4ERR_EXPIRED
:
2777 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
, NULL
);
2778 nfs4_schedule_state_recovery(clp
);
2779 if (test_bit(NFS4CLNT_STATE_RECOVER
, &clp
->cl_state
) == 0)
2780 rpc_wake_up_task(task
);
2781 task
->tk_status
= 0;
2783 case -NFS4ERR_DELAY
:
2784 nfs_inc_server_stats((struct nfs_server
*) server
,
2786 case -NFS4ERR_GRACE
:
2787 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
2788 task
->tk_status
= 0;
2790 case -NFS4ERR_OLD_STATEID
:
2791 task
->tk_status
= 0;
2794 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
2798 static int nfs4_wait_bit_interruptible(void *word
)
2800 if (signal_pending(current
))
2801 return -ERESTARTSYS
;
2806 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs_client
*clp
)
2813 rwsem_acquire(&clp
->cl_sem
.dep_map
, 0, 0, _RET_IP_
);
2815 rpc_clnt_sigmask(clnt
, &oldset
);
2816 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_STATE_RECOVER
,
2817 nfs4_wait_bit_interruptible
,
2818 TASK_INTERRUPTIBLE
);
2819 rpc_clnt_sigunmask(clnt
, &oldset
);
2821 rwsem_release(&clp
->cl_sem
.dep_map
, 1, _RET_IP_
);
2825 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
2833 *timeout
= NFS4_POLL_RETRY_MIN
;
2834 if (*timeout
> NFS4_POLL_RETRY_MAX
)
2835 *timeout
= NFS4_POLL_RETRY_MAX
;
2836 rpc_clnt_sigmask(clnt
, &oldset
);
2837 if (clnt
->cl_intr
) {
2838 schedule_timeout_interruptible(*timeout
);
2842 schedule_timeout_uninterruptible(*timeout
);
2843 rpc_clnt_sigunmask(clnt
, &oldset
);
2848 /* This is the error handling routine for processes that are allowed
2851 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
2853 struct nfs_client
*clp
= server
->nfs_client
;
2854 int ret
= errorcode
;
2856 exception
->retry
= 0;
2860 case -NFS4ERR_STALE_CLIENTID
:
2861 case -NFS4ERR_STALE_STATEID
:
2862 case -NFS4ERR_EXPIRED
:
2863 nfs4_schedule_state_recovery(clp
);
2864 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
2866 exception
->retry
= 1;
2868 case -NFS4ERR_FILE_OPEN
:
2869 case -NFS4ERR_GRACE
:
2870 case -NFS4ERR_DELAY
:
2871 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
2874 case -NFS4ERR_OLD_STATEID
:
2875 exception
->retry
= 1;
2877 /* We failed to handle the error */
2878 return nfs4_map_errors(ret
);
2881 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
2883 nfs4_verifier sc_verifier
;
2884 struct nfs4_setclientid setclientid
= {
2885 .sc_verifier
= &sc_verifier
,
2888 struct rpc_message msg
= {
2889 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
2890 .rpc_argp
= &setclientid
,
2898 p
= (__be32
*)sc_verifier
.data
;
2899 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
2900 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
2903 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
2904 sizeof(setclientid
.sc_name
), "%s/%u.%u.%u.%u %s %u",
2905 clp
->cl_ipaddr
, NIPQUAD(clp
->cl_addr
.sin_addr
),
2906 cred
->cr_ops
->cr_name
,
2907 clp
->cl_id_uniquifier
);
2908 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
2909 sizeof(setclientid
.sc_netid
), "tcp");
2910 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
2911 sizeof(setclientid
.sc_uaddr
), "%s.%d.%d",
2912 clp
->cl_ipaddr
, port
>> 8, port
& 255);
2914 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2915 if (status
!= -NFS4ERR_CLID_INUSE
)
2920 ssleep(clp
->cl_lease_time
+ 1);
2922 if (++clp
->cl_id_uniquifier
== 0)
2928 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2930 struct nfs_fsinfo fsinfo
;
2931 struct rpc_message msg
= {
2932 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
2934 .rpc_resp
= &fsinfo
,
2941 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2943 spin_lock(&clp
->cl_lock
);
2944 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
2945 clp
->cl_last_renewal
= now
;
2946 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
2947 spin_unlock(&clp
->cl_lock
);
2952 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2957 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
2961 case -NFS4ERR_RESOURCE
:
2962 /* The IBM lawyers misread another document! */
2963 case -NFS4ERR_DELAY
:
2964 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
2970 struct nfs4_delegreturndata
{
2971 struct nfs4_delegreturnargs args
;
2972 struct nfs4_delegreturnres res
;
2974 nfs4_stateid stateid
;
2975 struct rpc_cred
*cred
;
2976 unsigned long timestamp
;
2977 struct nfs_fattr fattr
;
2981 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *calldata
)
2983 struct nfs4_delegreturndata
*data
= calldata
;
2984 struct rpc_message msg
= {
2985 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
2986 .rpc_argp
= &data
->args
,
2987 .rpc_resp
= &data
->res
,
2988 .rpc_cred
= data
->cred
,
2990 nfs_fattr_init(data
->res
.fattr
);
2991 rpc_call_setup(task
, &msg
, 0);
2994 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
2996 struct nfs4_delegreturndata
*data
= calldata
;
2997 data
->rpc_status
= task
->tk_status
;
2998 if (data
->rpc_status
== 0)
2999 renew_lease(data
->res
.server
, data
->timestamp
);
3002 static void nfs4_delegreturn_release(void *calldata
)
3004 struct nfs4_delegreturndata
*data
= calldata
;
3006 put_rpccred(data
->cred
);
3010 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3011 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3012 .rpc_call_done
= nfs4_delegreturn_done
,
3013 .rpc_release
= nfs4_delegreturn_release
,
3016 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
3018 struct nfs4_delegreturndata
*data
;
3019 struct nfs_server
*server
= NFS_SERVER(inode
);
3020 struct rpc_task
*task
;
3023 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3026 data
->args
.fhandle
= &data
->fh
;
3027 data
->args
.stateid
= &data
->stateid
;
3028 data
->args
.bitmask
= server
->attr_bitmask
;
3029 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3030 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3031 data
->res
.fattr
= &data
->fattr
;
3032 data
->res
.server
= server
;
3033 data
->cred
= get_rpccred(cred
);
3034 data
->timestamp
= jiffies
;
3035 data
->rpc_status
= 0;
3037 task
= rpc_run_task(NFS_CLIENT(inode
), RPC_TASK_ASYNC
, &nfs4_delegreturn_ops
, data
);
3039 return PTR_ERR(task
);
3040 status
= nfs4_wait_for_completion_rpc_task(task
);
3042 status
= data
->rpc_status
;
3044 nfs_post_op_update_inode(inode
, &data
->fattr
);
3050 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
3052 struct nfs_server
*server
= NFS_SERVER(inode
);
3053 struct nfs4_exception exception
= { };
3056 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
);
3058 case -NFS4ERR_STALE_STATEID
:
3059 case -NFS4ERR_EXPIRED
:
3063 err
= nfs4_handle_exception(server
, err
, &exception
);
3064 } while (exception
.retry
);
3068 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3069 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3072 * sleep, with exponential backoff, and retry the LOCK operation.
3074 static unsigned long
3075 nfs4_set_lock_task_retry(unsigned long timeout
)
3077 schedule_timeout_interruptible(timeout
);
3079 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3080 return NFS4_LOCK_MAXTIMEOUT
;
3084 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3086 struct inode
*inode
= state
->inode
;
3087 struct nfs_server
*server
= NFS_SERVER(inode
);
3088 struct nfs_client
*clp
= server
->nfs_client
;
3089 struct nfs_lockt_args arg
= {
3090 .fh
= NFS_FH(inode
),
3093 struct nfs_lockt_res res
= {
3096 struct rpc_message msg
= {
3097 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3100 .rpc_cred
= state
->owner
->so_cred
,
3102 struct nfs4_lock_state
*lsp
;
3105 down_read(&clp
->cl_sem
);
3106 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3107 status
= nfs4_set_lock_state(state
, request
);
3110 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3111 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3112 status
= rpc_call_sync(server
->client
, &msg
, 0);
3115 request
->fl_type
= F_UNLCK
;
3117 case -NFS4ERR_DENIED
:
3120 request
->fl_ops
->fl_release_private(request
);
3122 up_read(&clp
->cl_sem
);
3126 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3128 struct nfs4_exception exception
= { };
3132 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3133 _nfs4_proc_getlk(state
, cmd
, request
),
3135 } while (exception
.retry
);
3139 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3142 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3144 res
= posix_lock_file_wait(file
, fl
);
3147 res
= flock_lock_file_wait(file
, fl
);
3155 struct nfs4_unlockdata
{
3156 struct nfs_locku_args arg
;
3157 struct nfs_locku_res res
;
3158 struct nfs4_lock_state
*lsp
;
3159 struct nfs_open_context
*ctx
;
3160 struct file_lock fl
;
3161 const struct nfs_server
*server
;
3162 unsigned long timestamp
;
3165 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3166 struct nfs_open_context
*ctx
,
3167 struct nfs4_lock_state
*lsp
,
3168 struct nfs_seqid
*seqid
)
3170 struct nfs4_unlockdata
*p
;
3171 struct inode
*inode
= lsp
->ls_state
->inode
;
3173 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
3176 p
->arg
.fh
= NFS_FH(inode
);
3178 p
->arg
.seqid
= seqid
;
3179 p
->arg
.stateid
= &lsp
->ls_stateid
;
3181 atomic_inc(&lsp
->ls_count
);
3182 /* Ensure we don't close file until we're done freeing locks! */
3183 p
->ctx
= get_nfs_open_context(ctx
);
3184 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3185 p
->server
= NFS_SERVER(inode
);
3189 static void nfs4_locku_release_calldata(void *data
)
3191 struct nfs4_unlockdata
*calldata
= data
;
3192 nfs_free_seqid(calldata
->arg
.seqid
);
3193 nfs4_put_lock_state(calldata
->lsp
);
3194 put_nfs_open_context(calldata
->ctx
);
3198 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3200 struct nfs4_unlockdata
*calldata
= data
;
3202 if (RPC_ASSASSINATED(task
))
3204 nfs_increment_lock_seqid(task
->tk_status
, calldata
->arg
.seqid
);
3205 switch (task
->tk_status
) {
3207 memcpy(calldata
->lsp
->ls_stateid
.data
,
3208 calldata
->res
.stateid
.data
,
3209 sizeof(calldata
->lsp
->ls_stateid
.data
));
3210 renew_lease(calldata
->server
, calldata
->timestamp
);
3212 case -NFS4ERR_STALE_STATEID
:
3213 case -NFS4ERR_EXPIRED
:
3216 if (nfs4_async_handle_error(task
, calldata
->server
) == -EAGAIN
)
3217 rpc_restart_call(task
);
3221 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3223 struct nfs4_unlockdata
*calldata
= data
;
3224 struct rpc_message msg
= {
3225 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3226 .rpc_argp
= &calldata
->arg
,
3227 .rpc_resp
= &calldata
->res
,
3228 .rpc_cred
= calldata
->lsp
->ls_state
->owner
->so_cred
,
3231 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3233 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3234 /* Note: exit _without_ running nfs4_locku_done */
3235 task
->tk_action
= NULL
;
3238 calldata
->timestamp
= jiffies
;
3239 rpc_call_setup(task
, &msg
, 0);
3242 static const struct rpc_call_ops nfs4_locku_ops
= {
3243 .rpc_call_prepare
= nfs4_locku_prepare
,
3244 .rpc_call_done
= nfs4_locku_done
,
3245 .rpc_release
= nfs4_locku_release_calldata
,
3248 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3249 struct nfs_open_context
*ctx
,
3250 struct nfs4_lock_state
*lsp
,
3251 struct nfs_seqid
*seqid
)
3253 struct nfs4_unlockdata
*data
;
3255 /* Ensure this is an unlock - when canceling a lock, the
3256 * canceled lock is passed in, and it won't be an unlock.
3258 fl
->fl_type
= F_UNLCK
;
3260 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3262 nfs_free_seqid(seqid
);
3263 return ERR_PTR(-ENOMEM
);
3266 return rpc_run_task(NFS_CLIENT(lsp
->ls_state
->inode
), RPC_TASK_ASYNC
, &nfs4_locku_ops
, data
);
3269 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3271 struct nfs_seqid
*seqid
;
3272 struct nfs4_lock_state
*lsp
;
3273 struct rpc_task
*task
;
3276 status
= nfs4_set_lock_state(state
, request
);
3277 /* Unlock _before_ we do the RPC call */
3278 request
->fl_flags
|= FL_EXISTS
;
3279 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
)
3283 /* Is this a delegated lock? */
3284 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3286 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3287 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3291 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
3292 status
= PTR_ERR(task
);
3295 status
= nfs4_wait_for_completion_rpc_task(task
);
3301 struct nfs4_lockdata
{
3302 struct nfs_lock_args arg
;
3303 struct nfs_lock_res res
;
3304 struct nfs4_lock_state
*lsp
;
3305 struct nfs_open_context
*ctx
;
3306 struct file_lock fl
;
3307 unsigned long timestamp
;
3312 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3313 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3315 struct nfs4_lockdata
*p
;
3316 struct inode
*inode
= lsp
->ls_state
->inode
;
3317 struct nfs_server
*server
= NFS_SERVER(inode
);
3319 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3323 p
->arg
.fh
= NFS_FH(inode
);
3325 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3326 if (p
->arg
.lock_seqid
== NULL
)
3328 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3329 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3330 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3332 atomic_inc(&lsp
->ls_count
);
3333 p
->ctx
= get_nfs_open_context(ctx
);
3334 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3341 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3343 struct nfs4_lockdata
*data
= calldata
;
3344 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3345 struct nfs4_state_owner
*sp
= state
->owner
;
3346 struct rpc_message msg
= {
3347 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3348 .rpc_argp
= &data
->arg
,
3349 .rpc_resp
= &data
->res
,
3350 .rpc_cred
= sp
->so_cred
,
3353 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3355 dprintk("%s: begin!\n", __FUNCTION__
);
3356 /* Do we need to do an open_to_lock_owner? */
3357 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3358 data
->arg
.open_seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
3359 if (data
->arg
.open_seqid
== NULL
) {
3360 data
->rpc_status
= -ENOMEM
;
3361 task
->tk_action
= NULL
;
3364 data
->arg
.open_stateid
= &state
->stateid
;
3365 data
->arg
.new_lock_owner
= 1;
3367 data
->timestamp
= jiffies
;
3368 rpc_call_setup(task
, &msg
, 0);
3370 dprintk("%s: done!, ret = %d\n", __FUNCTION__
, data
->rpc_status
);
3373 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3375 struct nfs4_lockdata
*data
= calldata
;
3377 dprintk("%s: begin!\n", __FUNCTION__
);
3379 data
->rpc_status
= task
->tk_status
;
3380 if (RPC_ASSASSINATED(task
))
3382 if (data
->arg
.new_lock_owner
!= 0) {
3383 nfs_increment_open_seqid(data
->rpc_status
, data
->arg
.open_seqid
);
3384 if (data
->rpc_status
== 0)
3385 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3389 if (data
->rpc_status
== 0) {
3390 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3391 sizeof(data
->lsp
->ls_stateid
.data
));
3392 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3393 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3395 nfs_increment_lock_seqid(data
->rpc_status
, data
->arg
.lock_seqid
);
3397 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, data
->rpc_status
);
3400 static void nfs4_lock_release(void *calldata
)
3402 struct nfs4_lockdata
*data
= calldata
;
3404 dprintk("%s: begin!\n", __FUNCTION__
);
3405 if (data
->arg
.open_seqid
!= NULL
)
3406 nfs_free_seqid(data
->arg
.open_seqid
);
3407 if (data
->cancelled
!= 0) {
3408 struct rpc_task
*task
;
3409 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3410 data
->arg
.lock_seqid
);
3413 dprintk("%s: cancelling lock!\n", __FUNCTION__
);
3415 nfs_free_seqid(data
->arg
.lock_seqid
);
3416 nfs4_put_lock_state(data
->lsp
);
3417 put_nfs_open_context(data
->ctx
);
3419 dprintk("%s: done!\n", __FUNCTION__
);
3422 static const struct rpc_call_ops nfs4_lock_ops
= {
3423 .rpc_call_prepare
= nfs4_lock_prepare
,
3424 .rpc_call_done
= nfs4_lock_done
,
3425 .rpc_release
= nfs4_lock_release
,
3428 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3430 struct nfs4_lockdata
*data
;
3431 struct rpc_task
*task
;
3434 dprintk("%s: begin!\n", __FUNCTION__
);
3435 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
3436 fl
->fl_u
.nfs4_fl
.owner
);
3440 data
->arg
.block
= 1;
3442 data
->arg
.reclaim
= 1;
3443 task
= rpc_run_task(NFS_CLIENT(state
->inode
), RPC_TASK_ASYNC
,
3444 &nfs4_lock_ops
, 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 if (!S_ISREG(inode
->i_mode
) &&
3618 (!S_ISDIR(inode
->i_mode
) || inode
->i_mode
& S_ISVTX
))
3621 return nfs4_proc_set_acl(inode
, buf
, buflen
);
3624 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
3625 * and that's what we'll do for e.g. user attributes that haven't been set.
3626 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
3627 * attributes in kernel-managed attribute namespaces. */
3628 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
3631 struct inode
*inode
= dentry
->d_inode
;
3633 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3636 return nfs4_proc_get_acl(inode
, buf
, buflen
);
3639 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
3641 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
3643 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
3645 if (buf
&& buflen
< len
)
3648 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
3652 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
3653 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
3655 struct nfs_server
*server
= NFS_SERVER(dir
);
3657 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
3658 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
3660 struct nfs4_fs_locations_arg args
= {
3661 .dir_fh
= NFS_FH(dir
),
3666 struct rpc_message msg
= {
3667 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
3669 .rpc_resp
= fs_locations
,
3673 dprintk("%s: start\n", __FUNCTION__
);
3674 nfs_fattr_init(&fs_locations
->fattr
);
3675 fs_locations
->server
= server
;
3676 fs_locations
->nlocations
= 0;
3677 status
= rpc_call_sync(server
->client
, &msg
, 0);
3678 dprintk("%s: returned status = %d\n", __FUNCTION__
, status
);
3682 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops
= {
3683 .recover_open
= nfs4_open_reclaim
,
3684 .recover_lock
= nfs4_lock_reclaim
,
3687 struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops
= {
3688 .recover_open
= nfs4_open_expired
,
3689 .recover_lock
= nfs4_lock_expired
,
3692 static const struct inode_operations nfs4_file_inode_operations
= {
3693 .permission
= nfs_permission
,
3694 .getattr
= nfs_getattr
,
3695 .setattr
= nfs_setattr
,
3696 .getxattr
= nfs4_getxattr
,
3697 .setxattr
= nfs4_setxattr
,
3698 .listxattr
= nfs4_listxattr
,
3701 const struct nfs_rpc_ops nfs_v4_clientops
= {
3702 .version
= 4, /* protocol version */
3703 .dentry_ops
= &nfs4_dentry_operations
,
3704 .dir_inode_ops
= &nfs4_dir_inode_operations
,
3705 .file_inode_ops
= &nfs4_file_inode_operations
,
3706 .getroot
= nfs4_proc_get_root
,
3707 .getattr
= nfs4_proc_getattr
,
3708 .setattr
= nfs4_proc_setattr
,
3709 .lookupfh
= nfs4_proc_lookupfh
,
3710 .lookup
= nfs4_proc_lookup
,
3711 .access
= nfs4_proc_access
,
3712 .readlink
= nfs4_proc_readlink
,
3713 .create
= nfs4_proc_create
,
3714 .remove
= nfs4_proc_remove
,
3715 .unlink_setup
= nfs4_proc_unlink_setup
,
3716 .unlink_done
= nfs4_proc_unlink_done
,
3717 .rename
= nfs4_proc_rename
,
3718 .link
= nfs4_proc_link
,
3719 .symlink
= nfs4_proc_symlink
,
3720 .mkdir
= nfs4_proc_mkdir
,
3721 .rmdir
= nfs4_proc_remove
,
3722 .readdir
= nfs4_proc_readdir
,
3723 .mknod
= nfs4_proc_mknod
,
3724 .statfs
= nfs4_proc_statfs
,
3725 .fsinfo
= nfs4_proc_fsinfo
,
3726 .pathconf
= nfs4_proc_pathconf
,
3727 .set_capabilities
= nfs4_server_capabilities
,
3728 .decode_dirent
= nfs4_decode_dirent
,
3729 .read_setup
= nfs4_proc_read_setup
,
3730 .read_done
= nfs4_read_done
,
3731 .write_setup
= nfs4_proc_write_setup
,
3732 .write_done
= nfs4_write_done
,
3733 .commit_setup
= nfs4_proc_commit_setup
,
3734 .commit_done
= nfs4_commit_done
,
3735 .file_open
= nfs_open
,
3736 .file_release
= nfs_release
,
3737 .lock
= nfs4_proc_lock
,
3738 .clear_acl_cache
= nfs4_zap_acl_attr
,