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 (1*HZ)
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_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
);
66 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
);
67 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs4_client
*clp
);
68 extern u32
*nfs4_decode_dirent(u32
*p
, struct nfs_entry
*entry
, int plus
);
69 extern struct rpc_procinfo nfs4_procedures
[];
71 /* Prevent leaks of NFSv4 errors into userland */
72 int nfs4_map_errors(int err
)
75 dprintk("%s could not handle NFSv4 error %d\n",
83 * This is our standard bitmap for GETATTR requests.
85 const u32 nfs4_fattr_bitmap
[2] = {
90 | FATTR4_WORD0_FILEID
,
92 | FATTR4_WORD1_NUMLINKS
94 | FATTR4_WORD1_OWNER_GROUP
96 | FATTR4_WORD1_SPACE_USED
97 | FATTR4_WORD1_TIME_ACCESS
98 | FATTR4_WORD1_TIME_METADATA
99 | FATTR4_WORD1_TIME_MODIFY
102 const u32 nfs4_statfs_bitmap
[2] = {
103 FATTR4_WORD0_FILES_AVAIL
104 | FATTR4_WORD0_FILES_FREE
105 | FATTR4_WORD0_FILES_TOTAL
,
106 FATTR4_WORD1_SPACE_AVAIL
107 | FATTR4_WORD1_SPACE_FREE
108 | FATTR4_WORD1_SPACE_TOTAL
111 const u32 nfs4_pathconf_bitmap
[2] = {
113 | FATTR4_WORD0_MAXNAME
,
117 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
118 | FATTR4_WORD0_MAXREAD
119 | FATTR4_WORD0_MAXWRITE
120 | FATTR4_WORD0_LEASE_TIME
,
124 const u32 nfs4_fs_locations_bitmap
[2] = {
126 | FATTR4_WORD0_CHANGE
129 | FATTR4_WORD0_FILEID
130 | FATTR4_WORD0_FS_LOCATIONS
,
132 | FATTR4_WORD1_NUMLINKS
134 | FATTR4_WORD1_OWNER_GROUP
135 | FATTR4_WORD1_RAWDEV
136 | FATTR4_WORD1_SPACE_USED
137 | FATTR4_WORD1_TIME_ACCESS
138 | FATTR4_WORD1_TIME_METADATA
139 | FATTR4_WORD1_TIME_MODIFY
140 | FATTR4_WORD1_MOUNTED_ON_FILEID
143 static void nfs4_setup_readdir(u64 cookie
, u32
*verifier
, struct dentry
*dentry
,
144 struct nfs4_readdir_arg
*readdir
)
148 BUG_ON(readdir
->count
< 80);
150 readdir
->cookie
= cookie
;
151 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
156 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
161 * NFSv4 servers do not return entries for '.' and '..'
162 * Therefore, we fake these entries here. We let '.'
163 * have cookie 0 and '..' have cookie 1. Note that
164 * when talking to the server, we always send cookie 0
167 start
= p
= (u32
*)kmap_atomic(*readdir
->pages
, KM_USER0
);
170 *p
++ = xdr_one
; /* next */
171 *p
++ = xdr_zero
; /* cookie, first word */
172 *p
++ = xdr_one
; /* cookie, second word */
173 *p
++ = xdr_one
; /* entry len */
174 memcpy(p
, ".\0\0\0", 4); /* entry */
176 *p
++ = xdr_one
; /* bitmap length */
177 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
178 *p
++ = htonl(8); /* attribute buffer length */
179 p
= xdr_encode_hyper(p
, dentry
->d_inode
->i_ino
);
182 *p
++ = xdr_one
; /* next */
183 *p
++ = xdr_zero
; /* cookie, first word */
184 *p
++ = xdr_two
; /* cookie, second word */
185 *p
++ = xdr_two
; /* entry len */
186 memcpy(p
, "..\0\0", 4); /* entry */
188 *p
++ = xdr_one
; /* bitmap length */
189 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
190 *p
++ = htonl(8); /* attribute buffer length */
191 p
= xdr_encode_hyper(p
, dentry
->d_parent
->d_inode
->i_ino
);
193 readdir
->pgbase
= (char *)p
- (char *)start
;
194 readdir
->count
-= readdir
->pgbase
;
195 kunmap_atomic(start
, KM_USER0
);
198 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
200 struct nfs4_client
*clp
= server
->nfs4_state
;
201 spin_lock(&clp
->cl_lock
);
202 if (time_before(clp
->cl_last_renewal
,timestamp
))
203 clp
->cl_last_renewal
= timestamp
;
204 spin_unlock(&clp
->cl_lock
);
207 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
209 struct nfs_inode
*nfsi
= NFS_I(dir
);
211 spin_lock(&dir
->i_lock
);
212 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
213 if (cinfo
->before
== nfsi
->change_attr
&& cinfo
->atomic
)
214 nfsi
->change_attr
= cinfo
->after
;
215 spin_unlock(&dir
->i_lock
);
218 struct nfs4_opendata
{
220 struct nfs_openargs o_arg
;
221 struct nfs_openres o_res
;
222 struct nfs_open_confirmargs c_arg
;
223 struct nfs_open_confirmres c_res
;
224 struct nfs_fattr f_attr
;
225 struct nfs_fattr dir_attr
;
226 struct dentry
*dentry
;
228 struct nfs4_state_owner
*owner
;
230 unsigned long timestamp
;
235 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
236 struct nfs4_state_owner
*sp
, int flags
,
237 const struct iattr
*attrs
)
239 struct dentry
*parent
= dget_parent(dentry
);
240 struct inode
*dir
= parent
->d_inode
;
241 struct nfs_server
*server
= NFS_SERVER(dir
);
242 struct nfs4_opendata
*p
;
244 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
247 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
248 if (p
->o_arg
.seqid
== NULL
)
250 atomic_set(&p
->count
, 1);
251 p
->dentry
= dget(dentry
);
254 atomic_inc(&sp
->so_count
);
255 p
->o_arg
.fh
= NFS_FH(dir
);
256 p
->o_arg
.open_flags
= flags
,
257 p
->o_arg
.clientid
= server
->nfs4_state
->cl_clientid
;
258 p
->o_arg
.id
= sp
->so_id
;
259 p
->o_arg
.name
= &dentry
->d_name
;
260 p
->o_arg
.server
= server
;
261 p
->o_arg
.bitmask
= server
->attr_bitmask
;
262 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
263 p
->o_res
.f_attr
= &p
->f_attr
;
264 p
->o_res
.dir_attr
= &p
->dir_attr
;
265 p
->o_res
.server
= server
;
266 nfs_fattr_init(&p
->f_attr
);
267 nfs_fattr_init(&p
->dir_attr
);
268 if (flags
& O_EXCL
) {
269 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
272 } else if (flags
& O_CREAT
) {
273 p
->o_arg
.u
.attrs
= &p
->attrs
;
274 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
276 p
->c_arg
.fh
= &p
->o_res
.fh
;
277 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
278 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
287 static void nfs4_opendata_free(struct nfs4_opendata
*p
)
289 if (p
!= NULL
&& atomic_dec_and_test(&p
->count
)) {
290 nfs_free_seqid(p
->o_arg
.seqid
);
291 nfs4_put_state_owner(p
->owner
);
298 /* Helper for asynchronous RPC calls */
299 static int nfs4_call_async(struct rpc_clnt
*clnt
,
300 const struct rpc_call_ops
*tk_ops
, void *calldata
)
302 struct rpc_task
*task
;
304 if (!(task
= rpc_new_task(clnt
, RPC_TASK_ASYNC
, tk_ops
, calldata
)))
310 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
315 rpc_clnt_sigmask(task
->tk_client
, &oldset
);
316 ret
= rpc_wait_for_completion_task(task
);
317 rpc_clnt_sigunmask(task
->tk_client
, &oldset
);
321 static inline void update_open_stateflags(struct nfs4_state
*state
, mode_t open_flags
)
323 switch (open_flags
) {
330 case FMODE_READ
|FMODE_WRITE
:
335 static void update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, int open_flags
)
337 struct inode
*inode
= state
->inode
;
339 open_flags
&= (FMODE_READ
|FMODE_WRITE
);
340 /* Protect against nfs4_find_state_byowner() */
341 spin_lock(&state
->owner
->so_lock
);
342 spin_lock(&inode
->i_lock
);
343 memcpy(&state
->stateid
, stateid
, sizeof(state
->stateid
));
344 update_open_stateflags(state
, open_flags
);
345 nfs4_state_set_mode_locked(state
, state
->state
| open_flags
);
346 spin_unlock(&inode
->i_lock
);
347 spin_unlock(&state
->owner
->so_lock
);
350 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
353 struct nfs4_state
*state
= NULL
;
355 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
357 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
360 state
= nfs4_get_open_state(inode
, data
->owner
);
363 update_open_stateid(state
, &data
->o_res
.stateid
, data
->o_arg
.open_flags
);
370 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
372 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
373 struct nfs_open_context
*ctx
;
375 spin_lock(&state
->inode
->i_lock
);
376 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
377 if (ctx
->state
!= state
)
379 get_nfs_open_context(ctx
);
380 spin_unlock(&state
->inode
->i_lock
);
383 spin_unlock(&state
->inode
->i_lock
);
384 return ERR_PTR(-ENOENT
);
387 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, mode_t openflags
, nfs4_stateid
*stateid
)
391 opendata
->o_arg
.open_flags
= openflags
;
392 ret
= _nfs4_proc_open(opendata
);
395 memcpy(stateid
->data
, opendata
->o_res
.stateid
.data
,
396 sizeof(stateid
->data
));
400 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
402 nfs4_stateid stateid
;
403 struct nfs4_state
*newstate
;
408 /* memory barrier prior to reading state->n_* */
410 if (state
->n_rdwr
!= 0) {
411 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &stateid
);
414 mode
|= FMODE_READ
|FMODE_WRITE
;
415 if (opendata
->o_res
.delegation_type
!= 0)
416 delegation
= opendata
->o_res
.delegation_type
;
419 if (state
->n_wronly
!= 0) {
420 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &stateid
);
424 if (opendata
->o_res
.delegation_type
!= 0)
425 delegation
= opendata
->o_res
.delegation_type
;
428 if (state
->n_rdonly
!= 0) {
429 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &stateid
);
434 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
437 if (opendata
->o_res
.delegation_type
== 0)
438 opendata
->o_res
.delegation_type
= delegation
;
439 opendata
->o_arg
.open_flags
|= mode
;
440 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
441 if (newstate
!= NULL
) {
442 if (opendata
->o_res
.delegation_type
!= 0) {
443 struct nfs_inode
*nfsi
= NFS_I(newstate
->inode
);
444 int delegation_flags
= 0;
445 if (nfsi
->delegation
)
446 delegation_flags
= nfsi
->delegation
->flags
;
447 if (!(delegation_flags
& NFS_DELEGATION_NEED_RECLAIM
))
448 nfs_inode_set_delegation(newstate
->inode
,
449 opendata
->owner
->so_cred
,
452 nfs_inode_reclaim_delegation(newstate
->inode
,
453 opendata
->owner
->so_cred
,
456 nfs4_close_state(newstate
, opendata
->o_arg
.open_flags
);
458 if (newstate
!= state
)
465 * reclaim state on the server after a reboot.
467 static int _nfs4_do_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
, struct dentry
*dentry
)
469 struct nfs_delegation
*delegation
= NFS_I(state
->inode
)->delegation
;
470 struct nfs4_opendata
*opendata
;
471 int delegation_type
= 0;
474 if (delegation
!= NULL
) {
475 if (!(delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)) {
476 memcpy(&state
->stateid
, &delegation
->stateid
,
477 sizeof(state
->stateid
));
478 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
481 delegation_type
= delegation
->type
;
483 opendata
= nfs4_opendata_alloc(dentry
, sp
, 0, NULL
);
484 if (opendata
== NULL
)
486 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
487 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
488 nfs_copy_fh(&opendata
->o_res
.fh
, opendata
->o_arg
.fh
);
489 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
490 status
= nfs4_open_recover(opendata
, state
);
491 nfs4_opendata_free(opendata
);
495 static int nfs4_do_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
, struct dentry
*dentry
)
497 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
498 struct nfs4_exception exception
= { };
501 err
= _nfs4_do_open_reclaim(sp
, state
, dentry
);
502 if (err
!= -NFS4ERR_DELAY
)
504 nfs4_handle_exception(server
, err
, &exception
);
505 } while (exception
.retry
);
509 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
511 struct nfs_open_context
*ctx
;
514 ctx
= nfs4_state_find_open_context(state
);
517 ret
= nfs4_do_open_reclaim(sp
, state
, ctx
->dentry
);
518 put_nfs_open_context(ctx
);
522 static int _nfs4_open_delegation_recall(struct dentry
*dentry
, struct nfs4_state
*state
)
524 struct nfs4_state_owner
*sp
= state
->owner
;
525 struct nfs4_opendata
*opendata
;
528 if (!test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
530 opendata
= nfs4_opendata_alloc(dentry
, sp
, 0, NULL
);
531 if (opendata
== NULL
)
533 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
534 memcpy(opendata
->o_arg
.u
.delegation
.data
, state
->stateid
.data
,
535 sizeof(opendata
->o_arg
.u
.delegation
.data
));
536 ret
= nfs4_open_recover(opendata
, state
);
537 nfs4_opendata_free(opendata
);
541 int nfs4_open_delegation_recall(struct dentry
*dentry
, struct nfs4_state
*state
)
543 struct nfs4_exception exception
= { };
544 struct nfs_server
*server
= NFS_SERVER(dentry
->d_inode
);
547 err
= _nfs4_open_delegation_recall(dentry
, state
);
551 case -NFS4ERR_STALE_CLIENTID
:
552 case -NFS4ERR_STALE_STATEID
:
553 case -NFS4ERR_EXPIRED
:
554 /* Don't recall a delegation if it was lost */
555 nfs4_schedule_state_recovery(server
->nfs4_state
);
558 err
= nfs4_handle_exception(server
, err
, &exception
);
559 } while (exception
.retry
);
563 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
565 struct nfs4_opendata
*data
= calldata
;
566 struct rpc_message msg
= {
567 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
568 .rpc_argp
= &data
->c_arg
,
569 .rpc_resp
= &data
->c_res
,
570 .rpc_cred
= data
->owner
->so_cred
,
572 data
->timestamp
= jiffies
;
573 rpc_call_setup(task
, &msg
, 0);
576 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
578 struct nfs4_opendata
*data
= calldata
;
580 data
->rpc_status
= task
->tk_status
;
581 if (RPC_ASSASSINATED(task
))
583 if (data
->rpc_status
== 0) {
584 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
585 sizeof(data
->o_res
.stateid
.data
));
586 renew_lease(data
->o_res
.server
, data
->timestamp
);
588 nfs_increment_open_seqid(data
->rpc_status
, data
->c_arg
.seqid
);
589 nfs_confirm_seqid(&data
->owner
->so_seqid
, data
->rpc_status
);
592 static void nfs4_open_confirm_release(void *calldata
)
594 struct nfs4_opendata
*data
= calldata
;
595 struct nfs4_state
*state
= NULL
;
597 /* If this request hasn't been cancelled, do nothing */
598 if (data
->cancelled
== 0)
600 /* In case of error, no cleanup! */
601 if (data
->rpc_status
!= 0)
603 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
604 state
= nfs4_opendata_to_nfs4_state(data
);
606 nfs4_close_state(state
, data
->o_arg
.open_flags
);
608 nfs4_opendata_free(data
);
611 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
612 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
613 .rpc_call_done
= nfs4_open_confirm_done
,
614 .rpc_release
= nfs4_open_confirm_release
,
618 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
620 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
622 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
623 struct rpc_task
*task
;
626 atomic_inc(&data
->count
);
628 * If rpc_run_task() ends up calling ->rpc_release(), we
629 * want to ensure that it takes the 'error' code path.
631 data
->rpc_status
= -ENOMEM
;
632 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_confirm_ops
, data
);
634 return PTR_ERR(task
);
635 status
= nfs4_wait_for_completion_rpc_task(task
);
640 status
= data
->rpc_status
;
641 rpc_release_task(task
);
645 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
647 struct nfs4_opendata
*data
= calldata
;
648 struct nfs4_state_owner
*sp
= data
->owner
;
649 struct rpc_message msg
= {
650 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
651 .rpc_argp
= &data
->o_arg
,
652 .rpc_resp
= &data
->o_res
,
653 .rpc_cred
= sp
->so_cred
,
656 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
658 /* Update sequence id. */
659 data
->o_arg
.id
= sp
->so_id
;
660 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
661 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
662 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
663 data
->timestamp
= jiffies
;
664 rpc_call_setup(task
, &msg
, 0);
667 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
669 struct nfs4_opendata
*data
= calldata
;
671 data
->rpc_status
= task
->tk_status
;
672 if (RPC_ASSASSINATED(task
))
674 if (task
->tk_status
== 0) {
675 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
679 data
->rpc_status
= -ELOOP
;
682 data
->rpc_status
= -EISDIR
;
685 data
->rpc_status
= -ENOTDIR
;
687 renew_lease(data
->o_res
.server
, data
->timestamp
);
689 nfs_increment_open_seqid(data
->rpc_status
, data
->o_arg
.seqid
);
692 static void nfs4_open_release(void *calldata
)
694 struct nfs4_opendata
*data
= calldata
;
695 struct nfs4_state
*state
= NULL
;
697 /* If this request hasn't been cancelled, do nothing */
698 if (data
->cancelled
== 0)
700 /* In case of error, no cleanup! */
701 if (data
->rpc_status
!= 0)
703 /* In case we need an open_confirm, no cleanup! */
704 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
706 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
707 state
= nfs4_opendata_to_nfs4_state(data
);
709 nfs4_close_state(state
, data
->o_arg
.open_flags
);
711 nfs4_opendata_free(data
);
714 static const struct rpc_call_ops nfs4_open_ops
= {
715 .rpc_call_prepare
= nfs4_open_prepare
,
716 .rpc_call_done
= nfs4_open_done
,
717 .rpc_release
= nfs4_open_release
,
721 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
723 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
725 struct inode
*dir
= data
->dir
->d_inode
;
726 struct nfs_server
*server
= NFS_SERVER(dir
);
727 struct nfs_openargs
*o_arg
= &data
->o_arg
;
728 struct nfs_openres
*o_res
= &data
->o_res
;
729 struct rpc_task
*task
;
732 atomic_inc(&data
->count
);
734 * If rpc_run_task() ends up calling ->rpc_release(), we
735 * want to ensure that it takes the 'error' code path.
737 data
->rpc_status
= -ENOMEM
;
738 task
= rpc_run_task(server
->client
, RPC_TASK_ASYNC
, &nfs4_open_ops
, data
);
740 return PTR_ERR(task
);
741 status
= nfs4_wait_for_completion_rpc_task(task
);
746 status
= data
->rpc_status
;
747 rpc_release_task(task
);
751 if (o_arg
->open_flags
& O_CREAT
) {
752 update_changeattr(dir
, &o_res
->cinfo
);
753 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
755 nfs_refresh_inode(dir
, o_res
->dir_attr
);
756 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
757 status
= _nfs4_proc_open_confirm(data
);
761 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
762 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
763 return server
->rpc_ops
->getattr(server
, &o_res
->fh
, o_res
->f_attr
);
767 static int _nfs4_do_access(struct inode
*inode
, struct rpc_cred
*cred
, int openflags
)
769 struct nfs_access_entry cache
;
773 if (openflags
& FMODE_READ
)
775 if (openflags
& FMODE_WRITE
)
777 status
= nfs_access_get_cached(inode
, cred
, &cache
);
781 /* Be clever: ask server to check for all possible rights */
782 cache
.mask
= MAY_EXEC
| MAY_WRITE
| MAY_READ
;
784 cache
.jiffies
= jiffies
;
785 status
= _nfs4_proc_access(inode
, &cache
);
788 nfs_access_add_cache(inode
, &cache
);
790 if ((cache
.mask
& mask
) == mask
)
795 int nfs4_recover_expired_lease(struct nfs_server
*server
)
797 struct nfs4_client
*clp
= server
->nfs4_state
;
799 if (test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
))
800 nfs4_schedule_state_recovery(clp
);
801 return nfs4_wait_clnt_recover(server
->client
, clp
);
806 * reclaim state on the server after a network partition.
807 * Assumes caller holds the appropriate lock
809 static int _nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
, struct dentry
*dentry
)
811 struct inode
*inode
= state
->inode
;
812 struct nfs_delegation
*delegation
= NFS_I(inode
)->delegation
;
813 struct nfs4_opendata
*opendata
;
814 int openflags
= state
->state
& (FMODE_READ
|FMODE_WRITE
);
817 if (delegation
!= NULL
&& !(delegation
->flags
& NFS_DELEGATION_NEED_RECLAIM
)) {
818 ret
= _nfs4_do_access(inode
, sp
->so_cred
, openflags
);
821 memcpy(&state
->stateid
, &delegation
->stateid
, sizeof(state
->stateid
));
822 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
825 opendata
= nfs4_opendata_alloc(dentry
, sp
, openflags
, NULL
);
826 if (opendata
== NULL
)
828 ret
= nfs4_open_recover(opendata
, state
);
829 if (ret
== -ESTALE
) {
830 /* Invalidate the state owner so we don't ever use it again */
831 nfs4_drop_state_owner(sp
);
834 nfs4_opendata_free(opendata
);
838 static inline int nfs4_do_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
, struct dentry
*dentry
)
840 struct nfs_server
*server
= NFS_SERVER(dentry
->d_inode
);
841 struct nfs4_exception exception
= { };
845 err
= _nfs4_open_expired(sp
, state
, dentry
);
846 if (err
== -NFS4ERR_DELAY
)
847 nfs4_handle_exception(server
, err
, &exception
);
848 } while (exception
.retry
);
852 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
854 struct nfs_open_context
*ctx
;
857 ctx
= nfs4_state_find_open_context(state
);
860 ret
= nfs4_do_open_expired(sp
, state
, ctx
->dentry
);
861 put_nfs_open_context(ctx
);
866 * Returns a referenced nfs4_state if there is an open delegation on the file
868 static int _nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
870 struct nfs_delegation
*delegation
;
871 struct nfs_server
*server
= NFS_SERVER(inode
);
872 struct nfs4_client
*clp
= server
->nfs4_state
;
873 struct nfs_inode
*nfsi
= NFS_I(inode
);
874 struct nfs4_state_owner
*sp
= NULL
;
875 struct nfs4_state
*state
= NULL
;
876 int open_flags
= flags
& (FMODE_READ
|FMODE_WRITE
);
880 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
881 dprintk("%s: nfs4_get_state_owner failed!\n", __FUNCTION__
);
884 err
= nfs4_recover_expired_lease(server
);
886 goto out_put_state_owner
;
887 /* Protect against reboot recovery - NOTE ORDER! */
888 down_read(&clp
->cl_sem
);
889 /* Protect against delegation recall */
890 down_read(&nfsi
->rwsem
);
891 delegation
= NFS_I(inode
)->delegation
;
893 if (delegation
== NULL
|| (delegation
->type
& open_flags
) != open_flags
)
896 state
= nfs4_get_open_state(inode
, sp
);
901 if ((state
->state
& open_flags
) == open_flags
) {
902 spin_lock(&inode
->i_lock
);
903 update_open_stateflags(state
, open_flags
);
904 spin_unlock(&inode
->i_lock
);
906 } else if (state
->state
!= 0)
907 goto out_put_open_state
;
910 err
= _nfs4_do_access(inode
, cred
, open_flags
);
913 goto out_put_open_state
;
914 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
915 update_open_stateid(state
, &delegation
->stateid
, open_flags
);
917 nfs4_put_state_owner(sp
);
918 up_read(&nfsi
->rwsem
);
919 up_read(&clp
->cl_sem
);
923 nfs4_put_open_state(state
);
925 up_read(&nfsi
->rwsem
);
926 up_read(&clp
->cl_sem
);
928 nfs_inode_return_delegation(inode
);
930 nfs4_put_state_owner(sp
);
934 static struct nfs4_state
*nfs4_open_delegated(struct inode
*inode
, int flags
, struct rpc_cred
*cred
)
936 struct nfs4_exception exception
= { };
937 struct nfs4_state
*res
= ERR_PTR(-EIO
);
941 err
= _nfs4_open_delegated(inode
, flags
, cred
, &res
);
944 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(inode
),
946 } while (exception
.retry
);
951 * Returns a referenced nfs4_state
953 static int _nfs4_do_open(struct inode
*dir
, struct dentry
*dentry
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
955 struct nfs4_state_owner
*sp
;
956 struct nfs4_state
*state
= NULL
;
957 struct nfs_server
*server
= NFS_SERVER(dir
);
958 struct nfs4_client
*clp
= server
->nfs4_state
;
959 struct nfs4_opendata
*opendata
;
962 /* Protect against reboot recovery conflicts */
964 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
965 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
968 status
= nfs4_recover_expired_lease(server
);
970 goto err_put_state_owner
;
971 down_read(&clp
->cl_sem
);
973 opendata
= nfs4_opendata_alloc(dentry
, sp
, flags
, sattr
);
974 if (opendata
== NULL
)
975 goto err_put_state_owner
;
977 status
= _nfs4_proc_open(opendata
);
979 goto err_opendata_free
;
982 state
= nfs4_opendata_to_nfs4_state(opendata
);
984 goto err_opendata_free
;
985 if (opendata
->o_res
.delegation_type
!= 0)
986 nfs_inode_set_delegation(state
->inode
, cred
, &opendata
->o_res
);
987 nfs4_opendata_free(opendata
);
988 nfs4_put_state_owner(sp
);
989 up_read(&clp
->cl_sem
);
993 nfs4_opendata_free(opendata
);
995 nfs4_put_state_owner(sp
);
997 /* Note: clp->cl_sem must be released before nfs4_put_open_state()! */
998 up_read(&clp
->cl_sem
);
1004 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct dentry
*dentry
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1006 struct nfs4_exception exception
= { };
1007 struct nfs4_state
*res
;
1011 status
= _nfs4_do_open(dir
, dentry
, flags
, sattr
, cred
, &res
);
1014 /* NOTE: BAD_SEQID means the server and client disagree about the
1015 * book-keeping w.r.t. state-changing operations
1016 * (OPEN/CLOSE/LOCK/LOCKU...)
1017 * It is actually a sign of a bug on the client or on the server.
1019 * If we receive a BAD_SEQID error in the particular case of
1020 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1021 * have unhashed the old state_owner for us, and that we can
1022 * therefore safely retry using a new one. We should still warn
1023 * the user though...
1025 if (status
== -NFS4ERR_BAD_SEQID
) {
1026 printk(KERN_WARNING
"NFS: v4 server returned a bad sequence-id error!\n");
1027 exception
.retry
= 1;
1031 * BAD_STATEID on OPEN means that the server cancelled our
1032 * state before it received the OPEN_CONFIRM.
1033 * Recover by retrying the request as per the discussion
1034 * on Page 181 of RFC3530.
1036 if (status
== -NFS4ERR_BAD_STATEID
) {
1037 exception
.retry
= 1;
1040 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1041 status
, &exception
));
1042 } while (exception
.retry
);
1046 static int _nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1047 struct iattr
*sattr
, struct nfs4_state
*state
)
1049 struct nfs_server
*server
= NFS_SERVER(inode
);
1050 struct nfs_setattrargs arg
= {
1051 .fh
= NFS_FH(inode
),
1054 .bitmask
= server
->attr_bitmask
,
1056 struct nfs_setattrres res
= {
1060 struct rpc_message msg
= {
1061 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1065 unsigned long timestamp
= jiffies
;
1068 nfs_fattr_init(fattr
);
1070 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1071 /* Use that stateid */
1072 } else if (state
!= NULL
) {
1073 msg
.rpc_cred
= state
->owner
->so_cred
;
1074 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1076 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1078 status
= rpc_call_sync(server
->client
, &msg
, 0);
1079 if (status
== 0 && state
!= NULL
)
1080 renew_lease(server
, timestamp
);
1084 static int nfs4_do_setattr(struct inode
*inode
, struct nfs_fattr
*fattr
,
1085 struct iattr
*sattr
, struct nfs4_state
*state
)
1087 struct nfs_server
*server
= NFS_SERVER(inode
);
1088 struct nfs4_exception exception
= { };
1091 err
= nfs4_handle_exception(server
,
1092 _nfs4_do_setattr(inode
, fattr
, sattr
, state
),
1094 } while (exception
.retry
);
1098 struct nfs4_closedata
{
1099 struct inode
*inode
;
1100 struct nfs4_state
*state
;
1101 struct nfs_closeargs arg
;
1102 struct nfs_closeres res
;
1103 struct nfs_fattr fattr
;
1104 unsigned long timestamp
;
1107 static void nfs4_free_closedata(void *data
)
1109 struct nfs4_closedata
*calldata
= data
;
1110 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1112 nfs4_put_open_state(calldata
->state
);
1113 nfs_free_seqid(calldata
->arg
.seqid
);
1114 nfs4_put_state_owner(sp
);
1118 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1120 struct nfs4_closedata
*calldata
= data
;
1121 struct nfs4_state
*state
= calldata
->state
;
1122 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1124 if (RPC_ASSASSINATED(task
))
1126 /* hmm. we are done with the inode, and in the process of freeing
1127 * the state_owner. we keep this around to process errors
1129 nfs_increment_open_seqid(task
->tk_status
, calldata
->arg
.seqid
);
1130 switch (task
->tk_status
) {
1132 memcpy(&state
->stateid
, &calldata
->res
.stateid
,
1133 sizeof(state
->stateid
));
1134 renew_lease(server
, calldata
->timestamp
);
1136 case -NFS4ERR_STALE_STATEID
:
1137 case -NFS4ERR_EXPIRED
:
1138 nfs4_schedule_state_recovery(server
->nfs4_state
);
1141 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
1142 rpc_restart_call(task
);
1146 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1149 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1151 struct nfs4_closedata
*calldata
= data
;
1152 struct nfs4_state
*state
= calldata
->state
;
1153 struct rpc_message msg
= {
1154 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1155 .rpc_argp
= &calldata
->arg
,
1156 .rpc_resp
= &calldata
->res
,
1157 .rpc_cred
= state
->owner
->so_cred
,
1159 int mode
= 0, old_mode
;
1161 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1163 /* Recalculate the new open mode in case someone reopened the file
1164 * while we were waiting in line to be scheduled.
1166 spin_lock(&state
->owner
->so_lock
);
1167 spin_lock(&calldata
->inode
->i_lock
);
1168 mode
= old_mode
= state
->state
;
1169 if (state
->n_rdwr
== 0) {
1170 if (state
->n_rdonly
== 0)
1171 mode
&= ~FMODE_READ
;
1172 if (state
->n_wronly
== 0)
1173 mode
&= ~FMODE_WRITE
;
1175 nfs4_state_set_mode_locked(state
, mode
);
1176 spin_unlock(&calldata
->inode
->i_lock
);
1177 spin_unlock(&state
->owner
->so_lock
);
1178 if (mode
== old_mode
|| test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
1179 /* Note: exit _without_ calling nfs4_close_done */
1180 task
->tk_action
= NULL
;
1183 nfs_fattr_init(calldata
->res
.fattr
);
1185 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1186 calldata
->arg
.open_flags
= mode
;
1187 calldata
->timestamp
= jiffies
;
1188 rpc_call_setup(task
, &msg
, 0);
1191 static const struct rpc_call_ops nfs4_close_ops
= {
1192 .rpc_call_prepare
= nfs4_close_prepare
,
1193 .rpc_call_done
= nfs4_close_done
,
1194 .rpc_release
= nfs4_free_closedata
,
1198 * It is possible for data to be read/written from a mem-mapped file
1199 * after the sys_close call (which hits the vfs layer as a flush).
1200 * This means that we can't safely call nfsv4 close on a file until
1201 * the inode is cleared. This in turn means that we are not good
1202 * NFSv4 citizens - we do not indicate to the server to update the file's
1203 * share state even when we are done with one of the three share
1204 * stateid's in the inode.
1206 * NOTE: Caller must be holding the sp->so_owner semaphore!
1208 int nfs4_do_close(struct inode
*inode
, struct nfs4_state
*state
)
1210 struct nfs_server
*server
= NFS_SERVER(inode
);
1211 struct nfs4_closedata
*calldata
;
1212 int status
= -ENOMEM
;
1214 calldata
= kmalloc(sizeof(*calldata
), GFP_KERNEL
);
1215 if (calldata
== NULL
)
1217 calldata
->inode
= inode
;
1218 calldata
->state
= state
;
1219 calldata
->arg
.fh
= NFS_FH(inode
);
1220 calldata
->arg
.stateid
= &state
->stateid
;
1221 /* Serialization for the sequence id */
1222 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1223 if (calldata
->arg
.seqid
== NULL
)
1224 goto out_free_calldata
;
1225 calldata
->arg
.bitmask
= server
->attr_bitmask
;
1226 calldata
->res
.fattr
= &calldata
->fattr
;
1227 calldata
->res
.server
= server
;
1229 status
= nfs4_call_async(server
->client
, &nfs4_close_ops
, calldata
);
1233 nfs_free_seqid(calldata
->arg
.seqid
);
1240 static int nfs4_intent_set_file(struct nameidata
*nd
, struct dentry
*dentry
, struct nfs4_state
*state
)
1244 filp
= lookup_instantiate_filp(nd
, dentry
, NULL
);
1245 if (!IS_ERR(filp
)) {
1246 struct nfs_open_context
*ctx
;
1247 ctx
= (struct nfs_open_context
*)filp
->private_data
;
1251 nfs4_close_state(state
, nd
->intent
.open
.flags
);
1252 return PTR_ERR(filp
);
1256 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1259 struct rpc_cred
*cred
;
1260 struct nfs4_state
*state
;
1263 if (nd
->flags
& LOOKUP_CREATE
) {
1264 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1265 attr
.ia_valid
= ATTR_MODE
;
1266 if (!IS_POSIXACL(dir
))
1267 attr
.ia_mode
&= ~current
->fs
->umask
;
1270 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1273 cred
= rpcauth_lookupcred(NFS_SERVER(dir
)->client
->cl_auth
, 0);
1275 return (struct dentry
*)cred
;
1276 state
= nfs4_do_open(dir
, dentry
, nd
->intent
.open
.flags
, &attr
, cred
);
1278 if (IS_ERR(state
)) {
1279 if (PTR_ERR(state
) == -ENOENT
)
1280 d_add(dentry
, NULL
);
1281 return (struct dentry
*)state
;
1283 res
= d_add_unique(dentry
, igrab(state
->inode
));
1286 nfs4_intent_set_file(nd
, dentry
, state
);
1291 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1293 struct rpc_cred
*cred
;
1294 struct nfs4_state
*state
;
1296 cred
= rpcauth_lookupcred(NFS_SERVER(dir
)->client
->cl_auth
, 0);
1298 return PTR_ERR(cred
);
1299 state
= nfs4_open_delegated(dentry
->d_inode
, openflags
, cred
);
1301 state
= nfs4_do_open(dir
, dentry
, openflags
, NULL
, cred
);
1303 if (IS_ERR(state
)) {
1304 switch (PTR_ERR(state
)) {
1310 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1313 if (dentry
->d_inode
== NULL
)
1318 if (state
->inode
== dentry
->d_inode
) {
1319 nfs4_intent_set_file(nd
, dentry
, state
);
1322 nfs4_close_state(state
, openflags
);
1329 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1331 struct nfs4_server_caps_res res
= {};
1332 struct rpc_message msg
= {
1333 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1334 .rpc_argp
= fhandle
,
1339 status
= rpc_call_sync(server
->client
, &msg
, 0);
1341 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
1342 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
1343 server
->caps
|= NFS_CAP_ACLS
;
1344 if (res
.has_links
!= 0)
1345 server
->caps
|= NFS_CAP_HARDLINKS
;
1346 if (res
.has_symlinks
!= 0)
1347 server
->caps
|= NFS_CAP_SYMLINKS
;
1348 server
->acl_bitmask
= res
.acl_bitmask
;
1353 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1355 struct nfs4_exception exception
= { };
1358 err
= nfs4_handle_exception(server
,
1359 _nfs4_server_capabilities(server
, fhandle
),
1361 } while (exception
.retry
);
1365 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1366 struct nfs_fsinfo
*info
)
1368 struct nfs4_lookup_root_arg args
= {
1369 .bitmask
= nfs4_fattr_bitmap
,
1371 struct nfs4_lookup_res res
= {
1373 .fattr
= info
->fattr
,
1376 struct rpc_message msg
= {
1377 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
1381 nfs_fattr_init(info
->fattr
);
1382 return rpc_call_sync(server
->client
, &msg
, 0);
1385 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1386 struct nfs_fsinfo
*info
)
1388 struct nfs4_exception exception
= { };
1391 err
= nfs4_handle_exception(server
,
1392 _nfs4_lookup_root(server
, fhandle
, info
),
1394 } while (exception
.retry
);
1398 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1399 struct nfs_fsinfo
*info
)
1401 struct nfs_fattr
* fattr
= info
->fattr
;
1404 struct nfs4_lookup_arg args
= {
1407 .bitmask
= nfs4_fattr_bitmap
,
1409 struct nfs4_lookup_res res
= {
1414 struct rpc_message msg
= {
1415 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1422 * Now we do a separate LOOKUP for each component of the mount path.
1423 * The LOOKUPs are done separately so that we can conveniently
1424 * catch an ERR_WRONGSEC if it occurs along the way...
1426 status
= nfs4_lookup_root(server
, fhandle
, info
);
1430 p
= server
->mnt_path
;
1432 struct nfs4_exception exception
= { };
1439 while (*p
&& (*p
!= '/'))
1444 nfs_fattr_init(fattr
);
1445 status
= nfs4_handle_exception(server
,
1446 rpc_call_sync(server
->client
, &msg
, 0),
1448 } while (exception
.retry
);
1451 if (status
== -ENOENT
) {
1452 printk(KERN_NOTICE
"NFS: mount path %s does not exist!\n", server
->mnt_path
);
1453 printk(KERN_NOTICE
"NFS: suggestion: try mounting '/' instead.\n");
1458 status
= nfs4_server_capabilities(server
, fhandle
);
1460 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
1462 return nfs4_map_errors(status
);
1465 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1467 struct nfs4_getattr_arg args
= {
1469 .bitmask
= server
->attr_bitmask
,
1471 struct nfs4_getattr_res res
= {
1475 struct rpc_message msg
= {
1476 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
1481 nfs_fattr_init(fattr
);
1482 return rpc_call_sync(server
->client
, &msg
, 0);
1485 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1487 struct nfs4_exception exception
= { };
1490 err
= nfs4_handle_exception(server
,
1491 _nfs4_proc_getattr(server
, fhandle
, fattr
),
1493 } while (exception
.retry
);
1498 * The file is not closed if it is opened due to the a request to change
1499 * the size of the file. The open call will not be needed once the
1500 * VFS layer lookup-intents are implemented.
1502 * Close is called when the inode is destroyed.
1503 * If we haven't opened the file for O_WRONLY, we
1504 * need to in the size_change case to obtain a stateid.
1507 * Because OPEN is always done by name in nfsv4, it is
1508 * possible that we opened a different file by the same
1509 * name. We can recognize this race condition, but we
1510 * can't do anything about it besides returning an error.
1512 * This will be fixed with VFS changes (lookup-intent).
1515 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
1516 struct iattr
*sattr
)
1518 struct rpc_cred
*cred
;
1519 struct inode
*inode
= dentry
->d_inode
;
1520 struct nfs_open_context
*ctx
;
1521 struct nfs4_state
*state
= NULL
;
1524 nfs_fattr_init(fattr
);
1526 cred
= rpcauth_lookupcred(NFS_SERVER(inode
)->client
->cl_auth
, 0);
1528 return PTR_ERR(cred
);
1530 /* Search for an existing open(O_WRITE) file */
1531 ctx
= nfs_find_open_context(inode
, cred
, FMODE_WRITE
);
1535 status
= nfs4_do_setattr(inode
, fattr
, sattr
, state
);
1537 nfs_setattr_update_inode(inode
, sattr
);
1539 put_nfs_open_context(ctx
);
1544 static int _nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
1545 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1548 struct nfs_server
*server
= NFS_SERVER(dir
);
1549 struct nfs4_lookup_arg args
= {
1550 .bitmask
= server
->attr_bitmask
,
1551 .dir_fh
= NFS_FH(dir
),
1554 struct nfs4_lookup_res res
= {
1559 struct rpc_message msg
= {
1560 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
1565 nfs_fattr_init(fattr
);
1567 dprintk("NFS call lookup %s\n", name
->name
);
1568 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
1569 dprintk("NFS reply lookup: %d\n", status
);
1573 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
1575 struct nfs4_exception exception
= { };
1578 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1579 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
1581 } while (exception
.retry
);
1585 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1587 struct nfs4_accessargs args
= {
1588 .fh
= NFS_FH(inode
),
1590 struct nfs4_accessres res
= { 0 };
1591 struct rpc_message msg
= {
1592 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
1595 .rpc_cred
= entry
->cred
,
1597 int mode
= entry
->mask
;
1601 * Determine which access bits we want to ask for...
1603 if (mode
& MAY_READ
)
1604 args
.access
|= NFS4_ACCESS_READ
;
1605 if (S_ISDIR(inode
->i_mode
)) {
1606 if (mode
& MAY_WRITE
)
1607 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
1608 if (mode
& MAY_EXEC
)
1609 args
.access
|= NFS4_ACCESS_LOOKUP
;
1611 if (mode
& MAY_WRITE
)
1612 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
1613 if (mode
& MAY_EXEC
)
1614 args
.access
|= NFS4_ACCESS_EXECUTE
;
1616 status
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1619 if (res
.access
& NFS4_ACCESS_READ
)
1620 entry
->mask
|= MAY_READ
;
1621 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
1622 entry
->mask
|= MAY_WRITE
;
1623 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
1624 entry
->mask
|= MAY_EXEC
;
1629 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
1631 struct nfs4_exception exception
= { };
1634 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1635 _nfs4_proc_access(inode
, entry
),
1637 } while (exception
.retry
);
1642 * TODO: For the time being, we don't try to get any attributes
1643 * along with any of the zero-copy operations READ, READDIR,
1646 * In the case of the first three, we want to put the GETATTR
1647 * after the read-type operation -- this is because it is hard
1648 * to predict the length of a GETATTR response in v4, and thus
1649 * align the READ data correctly. This means that the GETATTR
1650 * may end up partially falling into the page cache, and we should
1651 * shift it into the 'tail' of the xdr_buf before processing.
1652 * To do this efficiently, we need to know the total length
1653 * of data received, which doesn't seem to be available outside
1656 * In the case of WRITE, we also want to put the GETATTR after
1657 * the operation -- in this case because we want to make sure
1658 * we get the post-operation mtime and size. This means that
1659 * we can't use xdr_encode_pages() as written: we need a variant
1660 * of it which would leave room in the 'tail' iovec.
1662 * Both of these changes to the XDR layer would in fact be quite
1663 * minor, but I decided to leave them for a subsequent patch.
1665 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1666 unsigned int pgbase
, unsigned int pglen
)
1668 struct nfs4_readlink args
= {
1669 .fh
= NFS_FH(inode
),
1674 struct rpc_message msg
= {
1675 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
1680 return rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
1683 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
1684 unsigned int pgbase
, unsigned int pglen
)
1686 struct nfs4_exception exception
= { };
1689 err
= nfs4_handle_exception(NFS_SERVER(inode
),
1690 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
1692 } while (exception
.retry
);
1696 static int _nfs4_proc_read(struct nfs_read_data
*rdata
)
1698 int flags
= rdata
->flags
;
1699 struct inode
*inode
= rdata
->inode
;
1700 struct nfs_fattr
*fattr
= rdata
->res
.fattr
;
1701 struct nfs_server
*server
= NFS_SERVER(inode
);
1702 struct rpc_message msg
= {
1703 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
],
1704 .rpc_argp
= &rdata
->args
,
1705 .rpc_resp
= &rdata
->res
,
1706 .rpc_cred
= rdata
->cred
,
1708 unsigned long timestamp
= jiffies
;
1711 dprintk("NFS call read %d @ %Ld\n", rdata
->args
.count
,
1712 (long long) rdata
->args
.offset
);
1714 nfs_fattr_init(fattr
);
1715 status
= rpc_call_sync(server
->client
, &msg
, flags
);
1717 renew_lease(server
, timestamp
);
1718 dprintk("NFS reply read: %d\n", status
);
1722 static int nfs4_proc_read(struct nfs_read_data
*rdata
)
1724 struct nfs4_exception exception
= { };
1727 err
= nfs4_handle_exception(NFS_SERVER(rdata
->inode
),
1728 _nfs4_proc_read(rdata
),
1730 } while (exception
.retry
);
1734 static int _nfs4_proc_write(struct nfs_write_data
*wdata
)
1736 int rpcflags
= wdata
->flags
;
1737 struct inode
*inode
= wdata
->inode
;
1738 struct nfs_fattr
*fattr
= wdata
->res
.fattr
;
1739 struct nfs_server
*server
= NFS_SERVER(inode
);
1740 struct rpc_message msg
= {
1741 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
],
1742 .rpc_argp
= &wdata
->args
,
1743 .rpc_resp
= &wdata
->res
,
1744 .rpc_cred
= wdata
->cred
,
1748 dprintk("NFS call write %d @ %Ld\n", wdata
->args
.count
,
1749 (long long) wdata
->args
.offset
);
1751 wdata
->args
.bitmask
= server
->attr_bitmask
;
1752 wdata
->res
.server
= server
;
1753 wdata
->timestamp
= jiffies
;
1754 nfs_fattr_init(fattr
);
1755 status
= rpc_call_sync(server
->client
, &msg
, rpcflags
);
1756 dprintk("NFS reply write: %d\n", status
);
1759 renew_lease(server
, wdata
->timestamp
);
1760 nfs_post_op_update_inode(inode
, fattr
);
1761 return wdata
->res
.count
;
1764 static int nfs4_proc_write(struct nfs_write_data
*wdata
)
1766 struct nfs4_exception exception
= { };
1769 err
= nfs4_handle_exception(NFS_SERVER(wdata
->inode
),
1770 _nfs4_proc_write(wdata
),
1772 } while (exception
.retry
);
1776 static int _nfs4_proc_commit(struct nfs_write_data
*cdata
)
1778 struct inode
*inode
= cdata
->inode
;
1779 struct nfs_fattr
*fattr
= cdata
->res
.fattr
;
1780 struct nfs_server
*server
= NFS_SERVER(inode
);
1781 struct rpc_message msg
= {
1782 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
],
1783 .rpc_argp
= &cdata
->args
,
1784 .rpc_resp
= &cdata
->res
,
1785 .rpc_cred
= cdata
->cred
,
1789 dprintk("NFS call commit %d @ %Ld\n", cdata
->args
.count
,
1790 (long long) cdata
->args
.offset
);
1792 cdata
->args
.bitmask
= server
->attr_bitmask
;
1793 cdata
->res
.server
= server
;
1794 cdata
->timestamp
= jiffies
;
1795 nfs_fattr_init(fattr
);
1796 status
= rpc_call_sync(server
->client
, &msg
, 0);
1798 renew_lease(server
, cdata
->timestamp
);
1799 dprintk("NFS reply commit: %d\n", status
);
1801 nfs_post_op_update_inode(inode
, fattr
);
1805 static int nfs4_proc_commit(struct nfs_write_data
*cdata
)
1807 struct nfs4_exception exception
= { };
1810 err
= nfs4_handle_exception(NFS_SERVER(cdata
->inode
),
1811 _nfs4_proc_commit(cdata
),
1813 } while (exception
.retry
);
1819 * We will need to arrange for the VFS layer to provide an atomic open.
1820 * Until then, this create/open method is prone to inefficiency and race
1821 * conditions due to the lookup, create, and open VFS calls from sys_open()
1822 * placed on the wire.
1824 * Given the above sorry state of affairs, I'm simply sending an OPEN.
1825 * The file will be opened again in the subsequent VFS open call
1826 * (nfs4_proc_file_open).
1828 * The open for read will just hang around to be used by any process that
1829 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
1833 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
1834 int flags
, struct nameidata
*nd
)
1836 struct nfs4_state
*state
;
1837 struct rpc_cred
*cred
;
1840 cred
= rpcauth_lookupcred(NFS_SERVER(dir
)->client
->cl_auth
, 0);
1842 status
= PTR_ERR(cred
);
1845 state
= nfs4_do_open(dir
, dentry
, flags
, sattr
, cred
);
1847 if (IS_ERR(state
)) {
1848 status
= PTR_ERR(state
);
1851 d_instantiate(dentry
, igrab(state
->inode
));
1852 if (flags
& O_EXCL
) {
1853 struct nfs_fattr fattr
;
1854 status
= nfs4_do_setattr(state
->inode
, &fattr
, sattr
, state
);
1856 nfs_setattr_update_inode(state
->inode
, sattr
);
1858 if (status
== 0 && nd
!= NULL
&& (nd
->flags
& LOOKUP_OPEN
))
1859 status
= nfs4_intent_set_file(nd
, dentry
, state
);
1861 nfs4_close_state(state
, flags
);
1866 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1868 struct nfs_server
*server
= NFS_SERVER(dir
);
1869 struct nfs4_remove_arg args
= {
1872 .bitmask
= server
->attr_bitmask
,
1874 struct nfs_fattr dir_attr
;
1875 struct nfs4_remove_res res
= {
1877 .dir_attr
= &dir_attr
,
1879 struct rpc_message msg
= {
1880 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
1886 nfs_fattr_init(res
.dir_attr
);
1887 status
= rpc_call_sync(server
->client
, &msg
, 0);
1889 update_changeattr(dir
, &res
.cinfo
);
1890 nfs_post_op_update_inode(dir
, res
.dir_attr
);
1895 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
1897 struct nfs4_exception exception
= { };
1900 err
= nfs4_handle_exception(NFS_SERVER(dir
),
1901 _nfs4_proc_remove(dir
, name
),
1903 } while (exception
.retry
);
1907 struct unlink_desc
{
1908 struct nfs4_remove_arg args
;
1909 struct nfs4_remove_res res
;
1910 struct nfs_fattr dir_attr
;
1913 static int nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct dentry
*dir
,
1916 struct nfs_server
*server
= NFS_SERVER(dir
->d_inode
);
1917 struct unlink_desc
*up
;
1919 up
= (struct unlink_desc
*) kmalloc(sizeof(*up
), GFP_KERNEL
);
1923 up
->args
.fh
= NFS_FH(dir
->d_inode
);
1924 up
->args
.name
= name
;
1925 up
->args
.bitmask
= server
->attr_bitmask
;
1926 up
->res
.server
= server
;
1927 up
->res
.dir_attr
= &up
->dir_attr
;
1929 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
1930 msg
->rpc_argp
= &up
->args
;
1931 msg
->rpc_resp
= &up
->res
;
1935 static int nfs4_proc_unlink_done(struct dentry
*dir
, struct rpc_task
*task
)
1937 struct rpc_message
*msg
= &task
->tk_msg
;
1938 struct unlink_desc
*up
;
1940 if (msg
->rpc_resp
!= NULL
) {
1941 up
= container_of(msg
->rpc_resp
, struct unlink_desc
, res
);
1942 update_changeattr(dir
->d_inode
, &up
->res
.cinfo
);
1943 nfs_post_op_update_inode(dir
->d_inode
, up
->res
.dir_attr
);
1945 msg
->rpc_resp
= NULL
;
1946 msg
->rpc_argp
= NULL
;
1951 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1952 struct inode
*new_dir
, struct qstr
*new_name
)
1954 struct nfs_server
*server
= NFS_SERVER(old_dir
);
1955 struct nfs4_rename_arg arg
= {
1956 .old_dir
= NFS_FH(old_dir
),
1957 .new_dir
= NFS_FH(new_dir
),
1958 .old_name
= old_name
,
1959 .new_name
= new_name
,
1960 .bitmask
= server
->attr_bitmask
,
1962 struct nfs_fattr old_fattr
, new_fattr
;
1963 struct nfs4_rename_res res
= {
1965 .old_fattr
= &old_fattr
,
1966 .new_fattr
= &new_fattr
,
1968 struct rpc_message msg
= {
1969 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
1975 nfs_fattr_init(res
.old_fattr
);
1976 nfs_fattr_init(res
.new_fattr
);
1977 status
= rpc_call_sync(server
->client
, &msg
, 0);
1980 update_changeattr(old_dir
, &res
.old_cinfo
);
1981 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
1982 update_changeattr(new_dir
, &res
.new_cinfo
);
1983 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
1988 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
1989 struct inode
*new_dir
, struct qstr
*new_name
)
1991 struct nfs4_exception exception
= { };
1994 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
1995 _nfs4_proc_rename(old_dir
, old_name
,
1998 } while (exception
.retry
);
2002 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2004 struct nfs_server
*server
= NFS_SERVER(inode
);
2005 struct nfs4_link_arg arg
= {
2006 .fh
= NFS_FH(inode
),
2007 .dir_fh
= NFS_FH(dir
),
2009 .bitmask
= server
->attr_bitmask
,
2011 struct nfs_fattr fattr
, dir_attr
;
2012 struct nfs4_link_res res
= {
2015 .dir_attr
= &dir_attr
,
2017 struct rpc_message msg
= {
2018 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2024 nfs_fattr_init(res
.fattr
);
2025 nfs_fattr_init(res
.dir_attr
);
2026 status
= rpc_call_sync(server
->client
, &msg
, 0);
2028 update_changeattr(dir
, &res
.cinfo
);
2029 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2030 nfs_post_op_update_inode(inode
, res
.fattr
);
2036 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2038 struct nfs4_exception exception
= { };
2041 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2042 _nfs4_proc_link(inode
, dir
, name
),
2044 } while (exception
.retry
);
2048 static int _nfs4_proc_symlink(struct inode
*dir
, struct qstr
*name
,
2049 struct qstr
*path
, struct iattr
*sattr
, struct nfs_fh
*fhandle
,
2050 struct nfs_fattr
*fattr
)
2052 struct nfs_server
*server
= NFS_SERVER(dir
);
2053 struct nfs_fattr dir_fattr
;
2054 struct nfs4_create_arg arg
= {
2055 .dir_fh
= NFS_FH(dir
),
2060 .bitmask
= server
->attr_bitmask
,
2062 struct nfs4_create_res res
= {
2066 .dir_fattr
= &dir_fattr
,
2068 struct rpc_message msg
= {
2069 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
],
2075 if (path
->len
> NFS4_MAXPATHLEN
)
2076 return -ENAMETOOLONG
;
2077 arg
.u
.symlink
= path
;
2078 nfs_fattr_init(fattr
);
2079 nfs_fattr_init(&dir_fattr
);
2081 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2083 update_changeattr(dir
, &res
.dir_cinfo
);
2084 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2088 static int nfs4_proc_symlink(struct inode
*dir
, struct qstr
*name
,
2089 struct qstr
*path
, struct iattr
*sattr
, struct nfs_fh
*fhandle
,
2090 struct nfs_fattr
*fattr
)
2092 struct nfs4_exception exception
= { };
2095 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2096 _nfs4_proc_symlink(dir
, name
, path
, sattr
,
2099 } while (exception
.retry
);
2103 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2104 struct iattr
*sattr
)
2106 struct nfs_server
*server
= NFS_SERVER(dir
);
2107 struct nfs_fh fhandle
;
2108 struct nfs_fattr fattr
, dir_fattr
;
2109 struct nfs4_create_arg arg
= {
2110 .dir_fh
= NFS_FH(dir
),
2112 .name
= &dentry
->d_name
,
2115 .bitmask
= server
->attr_bitmask
,
2117 struct nfs4_create_res res
= {
2121 .dir_fattr
= &dir_fattr
,
2123 struct rpc_message msg
= {
2124 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2130 nfs_fattr_init(&fattr
);
2131 nfs_fattr_init(&dir_fattr
);
2133 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2135 update_changeattr(dir
, &res
.dir_cinfo
);
2136 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2137 status
= nfs_instantiate(dentry
, &fhandle
, &fattr
);
2142 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2143 struct iattr
*sattr
)
2145 struct nfs4_exception exception
= { };
2148 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2149 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2151 } while (exception
.retry
);
2155 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2156 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2158 struct inode
*dir
= dentry
->d_inode
;
2159 struct nfs4_readdir_arg args
= {
2164 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2166 struct nfs4_readdir_res res
;
2167 struct rpc_message msg
= {
2168 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2175 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__
,
2176 dentry
->d_parent
->d_name
.name
,
2177 dentry
->d_name
.name
,
2178 (unsigned long long)cookie
);
2180 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2181 res
.pgbase
= args
.pgbase
;
2182 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2184 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2186 dprintk("%s: returns %d\n", __FUNCTION__
, status
);
2190 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2191 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2193 struct nfs4_exception exception
= { };
2196 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2197 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2200 } while (exception
.retry
);
2204 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2205 struct iattr
*sattr
, dev_t rdev
)
2207 struct nfs_server
*server
= NFS_SERVER(dir
);
2209 struct nfs_fattr fattr
, dir_fattr
;
2210 struct nfs4_create_arg arg
= {
2211 .dir_fh
= NFS_FH(dir
),
2213 .name
= &dentry
->d_name
,
2215 .bitmask
= server
->attr_bitmask
,
2217 struct nfs4_create_res res
= {
2221 .dir_fattr
= &dir_fattr
,
2223 struct rpc_message msg
= {
2224 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
],
2229 int mode
= sattr
->ia_mode
;
2231 nfs_fattr_init(&fattr
);
2232 nfs_fattr_init(&dir_fattr
);
2234 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2235 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2237 arg
.ftype
= NF4FIFO
;
2238 else if (S_ISBLK(mode
)) {
2240 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2241 arg
.u
.device
.specdata2
= MINOR(rdev
);
2243 else if (S_ISCHR(mode
)) {
2245 arg
.u
.device
.specdata1
= MAJOR(rdev
);
2246 arg
.u
.device
.specdata2
= MINOR(rdev
);
2249 arg
.ftype
= NF4SOCK
;
2251 status
= rpc_call_sync(NFS_CLIENT(dir
), &msg
, 0);
2253 update_changeattr(dir
, &res
.dir_cinfo
);
2254 nfs_post_op_update_inode(dir
, res
.dir_fattr
);
2255 status
= nfs_instantiate(dentry
, &fh
, &fattr
);
2260 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2261 struct iattr
*sattr
, dev_t rdev
)
2263 struct nfs4_exception exception
= { };
2266 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2267 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2269 } while (exception
.retry
);
2273 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2274 struct nfs_fsstat
*fsstat
)
2276 struct nfs4_statfs_arg args
= {
2278 .bitmask
= server
->attr_bitmask
,
2280 struct rpc_message msg
= {
2281 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2286 nfs_fattr_init(fsstat
->fattr
);
2287 return rpc_call_sync(server
->client
, &msg
, 0);
2290 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2292 struct nfs4_exception exception
= { };
2295 err
= nfs4_handle_exception(server
,
2296 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2298 } while (exception
.retry
);
2302 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2303 struct nfs_fsinfo
*fsinfo
)
2305 struct nfs4_fsinfo_arg args
= {
2307 .bitmask
= server
->attr_bitmask
,
2309 struct rpc_message msg
= {
2310 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2315 return rpc_call_sync(server
->client
, &msg
, 0);
2318 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2320 struct nfs4_exception exception
= { };
2324 err
= nfs4_handle_exception(server
,
2325 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2327 } while (exception
.retry
);
2331 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2333 nfs_fattr_init(fsinfo
->fattr
);
2334 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2337 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2338 struct nfs_pathconf
*pathconf
)
2340 struct nfs4_pathconf_arg args
= {
2342 .bitmask
= server
->attr_bitmask
,
2344 struct rpc_message msg
= {
2345 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2347 .rpc_resp
= pathconf
,
2350 /* None of the pathconf attributes are mandatory to implement */
2351 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2352 memset(pathconf
, 0, sizeof(*pathconf
));
2356 nfs_fattr_init(pathconf
->fattr
);
2357 return rpc_call_sync(server
->client
, &msg
, 0);
2360 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2361 struct nfs_pathconf
*pathconf
)
2363 struct nfs4_exception exception
= { };
2367 err
= nfs4_handle_exception(server
,
2368 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2370 } while (exception
.retry
);
2374 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2376 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2378 if (nfs4_async_handle_error(task
, server
) == -EAGAIN
) {
2379 rpc_restart_call(task
);
2382 if (task
->tk_status
> 0)
2383 renew_lease(server
, data
->timestamp
);
2387 static void nfs4_proc_read_setup(struct nfs_read_data
*data
)
2389 struct rpc_message msg
= {
2390 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
],
2391 .rpc_argp
= &data
->args
,
2392 .rpc_resp
= &data
->res
,
2393 .rpc_cred
= data
->cred
,
2396 data
->timestamp
= jiffies
;
2398 rpc_call_setup(&data
->task
, &msg
, 0);
2401 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2403 struct inode
*inode
= data
->inode
;
2405 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2406 rpc_restart_call(task
);
2409 if (task
->tk_status
>= 0) {
2410 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2411 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2416 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, int how
)
2418 struct rpc_message msg
= {
2419 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
],
2420 .rpc_argp
= &data
->args
,
2421 .rpc_resp
= &data
->res
,
2422 .rpc_cred
= data
->cred
,
2424 struct inode
*inode
= data
->inode
;
2425 struct nfs_server
*server
= NFS_SERVER(inode
);
2428 if (how
& FLUSH_STABLE
) {
2429 if (!NFS_I(inode
)->ncommit
)
2430 stable
= NFS_FILE_SYNC
;
2432 stable
= NFS_DATA_SYNC
;
2434 stable
= NFS_UNSTABLE
;
2435 data
->args
.stable
= stable
;
2436 data
->args
.bitmask
= server
->attr_bitmask
;
2437 data
->res
.server
= server
;
2439 data
->timestamp
= jiffies
;
2441 /* Finalize the task. */
2442 rpc_call_setup(&data
->task
, &msg
, 0);
2445 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2447 struct inode
*inode
= data
->inode
;
2449 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
)) == -EAGAIN
) {
2450 rpc_restart_call(task
);
2453 if (task
->tk_status
>= 0)
2454 nfs_post_op_update_inode(inode
, data
->res
.fattr
);
2458 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, int how
)
2460 struct rpc_message msg
= {
2461 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
],
2462 .rpc_argp
= &data
->args
,
2463 .rpc_resp
= &data
->res
,
2464 .rpc_cred
= data
->cred
,
2466 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2468 data
->args
.bitmask
= server
->attr_bitmask
;
2469 data
->res
.server
= server
;
2471 rpc_call_setup(&data
->task
, &msg
, 0);
2475 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
2476 * standalone procedure for queueing an asynchronous RENEW.
2478 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
2480 struct nfs4_client
*clp
= (struct nfs4_client
*)task
->tk_msg
.rpc_argp
;
2481 unsigned long timestamp
= (unsigned long)data
;
2483 if (task
->tk_status
< 0) {
2484 switch (task
->tk_status
) {
2485 case -NFS4ERR_STALE_CLIENTID
:
2486 case -NFS4ERR_EXPIRED
:
2487 case -NFS4ERR_CB_PATH_DOWN
:
2488 nfs4_schedule_state_recovery(clp
);
2492 spin_lock(&clp
->cl_lock
);
2493 if (time_before(clp
->cl_last_renewal
,timestamp
))
2494 clp
->cl_last_renewal
= timestamp
;
2495 spin_unlock(&clp
->cl_lock
);
2498 static const struct rpc_call_ops nfs4_renew_ops
= {
2499 .rpc_call_done
= nfs4_renew_done
,
2502 int nfs4_proc_async_renew(struct nfs4_client
*clp
, struct rpc_cred
*cred
)
2504 struct rpc_message msg
= {
2505 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2510 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
2511 &nfs4_renew_ops
, (void *)jiffies
);
2514 int nfs4_proc_renew(struct nfs4_client
*clp
, struct rpc_cred
*cred
)
2516 struct rpc_message msg
= {
2517 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2521 unsigned long now
= jiffies
;
2524 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2527 spin_lock(&clp
->cl_lock
);
2528 if (time_before(clp
->cl_last_renewal
,now
))
2529 clp
->cl_last_renewal
= now
;
2530 spin_unlock(&clp
->cl_lock
);
2534 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
2536 return (server
->caps
& NFS_CAP_ACLS
)
2537 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2538 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
2541 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
2542 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
2545 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
2547 static void buf_to_pages(const void *buf
, size_t buflen
,
2548 struct page
**pages
, unsigned int *pgbase
)
2550 const void *p
= buf
;
2552 *pgbase
= offset_in_page(buf
);
2554 while (p
< buf
+ buflen
) {
2555 *(pages
++) = virt_to_page(p
);
2556 p
+= PAGE_CACHE_SIZE
;
2560 struct nfs4_cached_acl
{
2566 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
2568 struct nfs_inode
*nfsi
= NFS_I(inode
);
2570 spin_lock(&inode
->i_lock
);
2571 kfree(nfsi
->nfs4_acl
);
2572 nfsi
->nfs4_acl
= acl
;
2573 spin_unlock(&inode
->i_lock
);
2576 static void nfs4_zap_acl_attr(struct inode
*inode
)
2578 nfs4_set_cached_acl(inode
, NULL
);
2581 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
2583 struct nfs_inode
*nfsi
= NFS_I(inode
);
2584 struct nfs4_cached_acl
*acl
;
2587 spin_lock(&inode
->i_lock
);
2588 acl
= nfsi
->nfs4_acl
;
2591 if (buf
== NULL
) /* user is just asking for length */
2593 if (acl
->cached
== 0)
2595 ret
= -ERANGE
; /* see getxattr(2) man page */
2596 if (acl
->len
> buflen
)
2598 memcpy(buf
, acl
->data
, acl
->len
);
2602 spin_unlock(&inode
->i_lock
);
2606 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
2608 struct nfs4_cached_acl
*acl
;
2610 if (buf
&& acl_len
<= PAGE_SIZE
) {
2611 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
2615 memcpy(acl
->data
, buf
, acl_len
);
2617 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
2624 nfs4_set_cached_acl(inode
, acl
);
2627 static inline ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
2629 struct page
*pages
[NFS4ACL_MAXPAGES
];
2630 struct nfs_getaclargs args
= {
2631 .fh
= NFS_FH(inode
),
2635 size_t resp_len
= buflen
;
2637 struct rpc_message msg
= {
2638 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
2640 .rpc_resp
= &resp_len
,
2642 struct page
*localpage
= NULL
;
2645 if (buflen
< PAGE_SIZE
) {
2646 /* As long as we're doing a round trip to the server anyway,
2647 * let's be prepared for a page of acl data. */
2648 localpage
= alloc_page(GFP_KERNEL
);
2649 resp_buf
= page_address(localpage
);
2650 if (localpage
== NULL
)
2652 args
.acl_pages
[0] = localpage
;
2653 args
.acl_pgbase
= 0;
2654 resp_len
= args
.acl_len
= PAGE_SIZE
;
2657 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
2659 ret
= rpc_call_sync(NFS_CLIENT(inode
), &msg
, 0);
2662 if (resp_len
> args
.acl_len
)
2663 nfs4_write_cached_acl(inode
, NULL
, resp_len
);
2665 nfs4_write_cached_acl(inode
, resp_buf
, resp_len
);
2668 if (resp_len
> buflen
)
2671 memcpy(buf
, resp_buf
, resp_len
);
2676 __free_page(localpage
);
2680 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
2682 struct nfs_server
*server
= NFS_SERVER(inode
);
2685 if (!nfs4_server_supports_acls(server
))
2687 ret
= nfs_revalidate_inode(server
, inode
);
2690 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
2693 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
2696 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
2698 struct nfs_server
*server
= NFS_SERVER(inode
);
2699 struct page
*pages
[NFS4ACL_MAXPAGES
];
2700 struct nfs_setaclargs arg
= {
2701 .fh
= NFS_FH(inode
),
2705 struct rpc_message msg
= {
2706 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
2712 if (!nfs4_server_supports_acls(server
))
2714 nfs_inode_return_delegation(inode
);
2715 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
2716 ret
= rpc_call_sync(NFS_SERVER(inode
)->client
, &msg
, 0);
2718 nfs4_write_cached_acl(inode
, buf
, buflen
);
2723 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
)
2725 struct nfs4_client
*clp
= server
->nfs4_state
;
2727 if (!clp
|| task
->tk_status
>= 0)
2729 switch(task
->tk_status
) {
2730 case -NFS4ERR_STALE_CLIENTID
:
2731 case -NFS4ERR_STALE_STATEID
:
2732 case -NFS4ERR_EXPIRED
:
2733 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
, NULL
);
2734 nfs4_schedule_state_recovery(clp
);
2735 if (test_bit(NFS4CLNT_STATE_RECOVER
, &clp
->cl_state
) == 0)
2736 rpc_wake_up_task(task
);
2737 task
->tk_status
= 0;
2739 case -NFS4ERR_DELAY
:
2740 nfs_inc_server_stats((struct nfs_server
*) server
,
2742 case -NFS4ERR_GRACE
:
2743 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
2744 task
->tk_status
= 0;
2746 case -NFS4ERR_OLD_STATEID
:
2747 task
->tk_status
= 0;
2750 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
2754 static int nfs4_wait_bit_interruptible(void *word
)
2756 if (signal_pending(current
))
2757 return -ERESTARTSYS
;
2762 static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt
, struct nfs4_client
*clp
)
2769 rpc_clnt_sigmask(clnt
, &oldset
);
2770 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_STATE_RECOVER
,
2771 nfs4_wait_bit_interruptible
,
2772 TASK_INTERRUPTIBLE
);
2773 rpc_clnt_sigunmask(clnt
, &oldset
);
2777 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
2785 *timeout
= NFS4_POLL_RETRY_MIN
;
2786 if (*timeout
> NFS4_POLL_RETRY_MAX
)
2787 *timeout
= NFS4_POLL_RETRY_MAX
;
2788 rpc_clnt_sigmask(clnt
, &oldset
);
2789 if (clnt
->cl_intr
) {
2790 schedule_timeout_interruptible(*timeout
);
2794 schedule_timeout_uninterruptible(*timeout
);
2795 rpc_clnt_sigunmask(clnt
, &oldset
);
2800 /* This is the error handling routine for processes that are allowed
2803 int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
2805 struct nfs4_client
*clp
= server
->nfs4_state
;
2806 int ret
= errorcode
;
2808 exception
->retry
= 0;
2812 case -NFS4ERR_STALE_CLIENTID
:
2813 case -NFS4ERR_STALE_STATEID
:
2814 case -NFS4ERR_EXPIRED
:
2815 nfs4_schedule_state_recovery(clp
);
2816 ret
= nfs4_wait_clnt_recover(server
->client
, clp
);
2818 exception
->retry
= 1;
2820 case -NFS4ERR_GRACE
:
2821 case -NFS4ERR_DELAY
:
2822 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
2825 case -NFS4ERR_OLD_STATEID
:
2826 exception
->retry
= 1;
2828 /* We failed to handle the error */
2829 return nfs4_map_errors(ret
);
2832 int nfs4_proc_setclientid(struct nfs4_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
2834 nfs4_verifier sc_verifier
;
2835 struct nfs4_setclientid setclientid
= {
2836 .sc_verifier
= &sc_verifier
,
2839 struct rpc_message msg
= {
2840 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
2841 .rpc_argp
= &setclientid
,
2849 p
= (u32
*)sc_verifier
.data
;
2850 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
2851 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
2854 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
2855 sizeof(setclientid
.sc_name
), "%s/%u.%u.%u.%u %s %u",
2856 clp
->cl_ipaddr
, NIPQUAD(clp
->cl_addr
.s_addr
),
2857 cred
->cr_ops
->cr_name
,
2858 clp
->cl_id_uniquifier
);
2859 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
2860 sizeof(setclientid
.sc_netid
), "tcp");
2861 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
2862 sizeof(setclientid
.sc_uaddr
), "%s.%d.%d",
2863 clp
->cl_ipaddr
, port
>> 8, port
& 255);
2865 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2866 if (status
!= -NFS4ERR_CLID_INUSE
)
2871 ssleep(clp
->cl_lease_time
+ 1);
2873 if (++clp
->cl_id_uniquifier
== 0)
2879 static int _nfs4_proc_setclientid_confirm(struct nfs4_client
*clp
, struct rpc_cred
*cred
)
2881 struct nfs_fsinfo fsinfo
;
2882 struct rpc_message msg
= {
2883 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
2885 .rpc_resp
= &fsinfo
,
2892 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2894 spin_lock(&clp
->cl_lock
);
2895 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
2896 clp
->cl_last_renewal
= now
;
2897 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
2898 spin_unlock(&clp
->cl_lock
);
2903 int nfs4_proc_setclientid_confirm(struct nfs4_client
*clp
, struct rpc_cred
*cred
)
2908 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
2912 case -NFS4ERR_RESOURCE
:
2913 /* The IBM lawyers misread another document! */
2914 case -NFS4ERR_DELAY
:
2915 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
2921 struct nfs4_delegreturndata
{
2922 struct nfs4_delegreturnargs args
;
2923 struct nfs4_delegreturnres res
;
2925 nfs4_stateid stateid
;
2926 struct rpc_cred
*cred
;
2927 unsigned long timestamp
;
2928 struct nfs_fattr fattr
;
2932 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *calldata
)
2934 struct nfs4_delegreturndata
*data
= calldata
;
2935 struct rpc_message msg
= {
2936 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
2937 .rpc_argp
= &data
->args
,
2938 .rpc_resp
= &data
->res
,
2939 .rpc_cred
= data
->cred
,
2941 nfs_fattr_init(data
->res
.fattr
);
2942 rpc_call_setup(task
, &msg
, 0);
2945 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
2947 struct nfs4_delegreturndata
*data
= calldata
;
2948 data
->rpc_status
= task
->tk_status
;
2949 if (data
->rpc_status
== 0)
2950 renew_lease(data
->res
.server
, data
->timestamp
);
2953 static void nfs4_delegreturn_release(void *calldata
)
2955 struct nfs4_delegreturndata
*data
= calldata
;
2957 put_rpccred(data
->cred
);
2961 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
2962 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
2963 .rpc_call_done
= nfs4_delegreturn_done
,
2964 .rpc_release
= nfs4_delegreturn_release
,
2967 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
2969 struct nfs4_delegreturndata
*data
;
2970 struct nfs_server
*server
= NFS_SERVER(inode
);
2971 struct rpc_task
*task
;
2974 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
2977 data
->args
.fhandle
= &data
->fh
;
2978 data
->args
.stateid
= &data
->stateid
;
2979 data
->args
.bitmask
= server
->attr_bitmask
;
2980 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
2981 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
2982 data
->res
.fattr
= &data
->fattr
;
2983 data
->res
.server
= server
;
2984 data
->cred
= get_rpccred(cred
);
2985 data
->timestamp
= jiffies
;
2986 data
->rpc_status
= 0;
2988 task
= rpc_run_task(NFS_CLIENT(inode
), RPC_TASK_ASYNC
, &nfs4_delegreturn_ops
, data
);
2990 return PTR_ERR(task
);
2991 status
= nfs4_wait_for_completion_rpc_task(task
);
2993 status
= data
->rpc_status
;
2995 nfs_post_op_update_inode(inode
, &data
->fattr
);
2997 rpc_release_task(task
);
3001 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
)
3003 struct nfs_server
*server
= NFS_SERVER(inode
);
3004 struct nfs4_exception exception
= { };
3007 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
);
3009 case -NFS4ERR_STALE_STATEID
:
3010 case -NFS4ERR_EXPIRED
:
3011 nfs4_schedule_state_recovery(server
->nfs4_state
);
3015 err
= nfs4_handle_exception(server
, err
, &exception
);
3016 } while (exception
.retry
);
3020 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3021 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3024 * sleep, with exponential backoff, and retry the LOCK operation.
3026 static unsigned long
3027 nfs4_set_lock_task_retry(unsigned long timeout
)
3029 schedule_timeout_interruptible(timeout
);
3031 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3032 return NFS4_LOCK_MAXTIMEOUT
;
3036 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3038 struct inode
*inode
= state
->inode
;
3039 struct nfs_server
*server
= NFS_SERVER(inode
);
3040 struct nfs4_client
*clp
= server
->nfs4_state
;
3041 struct nfs_lockt_args arg
= {
3042 .fh
= NFS_FH(inode
),
3045 struct nfs_lockt_res res
= {
3048 struct rpc_message msg
= {
3049 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3052 .rpc_cred
= state
->owner
->so_cred
,
3054 struct nfs4_lock_state
*lsp
;
3057 down_read(&clp
->cl_sem
);
3058 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3059 status
= nfs4_set_lock_state(state
, request
);
3062 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3063 arg
.lock_owner
.id
= lsp
->ls_id
;
3064 status
= rpc_call_sync(server
->client
, &msg
, 0);
3067 request
->fl_type
= F_UNLCK
;
3069 case -NFS4ERR_DENIED
:
3073 up_read(&clp
->cl_sem
);
3077 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3079 struct nfs4_exception exception
= { };
3083 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3084 _nfs4_proc_getlk(state
, cmd
, request
),
3086 } while (exception
.retry
);
3090 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3093 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3095 res
= posix_lock_file_wait(file
, fl
);
3098 res
= flock_lock_file_wait(file
, fl
);
3104 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n",
3109 struct nfs4_unlockdata
{
3110 struct nfs_locku_args arg
;
3111 struct nfs_locku_res res
;
3112 struct nfs4_lock_state
*lsp
;
3113 struct nfs_open_context
*ctx
;
3114 struct file_lock fl
;
3115 const struct nfs_server
*server
;
3116 unsigned long timestamp
;
3119 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3120 struct nfs_open_context
*ctx
,
3121 struct nfs4_lock_state
*lsp
,
3122 struct nfs_seqid
*seqid
)
3124 struct nfs4_unlockdata
*p
;
3125 struct inode
*inode
= lsp
->ls_state
->inode
;
3127 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
3130 p
->arg
.fh
= NFS_FH(inode
);
3132 p
->arg
.seqid
= seqid
;
3133 p
->arg
.stateid
= &lsp
->ls_stateid
;
3135 atomic_inc(&lsp
->ls_count
);
3136 /* Ensure we don't close file until we're done freeing locks! */
3137 p
->ctx
= get_nfs_open_context(ctx
);
3138 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3139 p
->server
= NFS_SERVER(inode
);
3143 static void nfs4_locku_release_calldata(void *data
)
3145 struct nfs4_unlockdata
*calldata
= data
;
3146 nfs_free_seqid(calldata
->arg
.seqid
);
3147 nfs4_put_lock_state(calldata
->lsp
);
3148 put_nfs_open_context(calldata
->ctx
);
3152 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3154 struct nfs4_unlockdata
*calldata
= data
;
3156 if (RPC_ASSASSINATED(task
))
3158 nfs_increment_lock_seqid(task
->tk_status
, calldata
->arg
.seqid
);
3159 switch (task
->tk_status
) {
3161 memcpy(calldata
->lsp
->ls_stateid
.data
,
3162 calldata
->res
.stateid
.data
,
3163 sizeof(calldata
->lsp
->ls_stateid
.data
));
3164 renew_lease(calldata
->server
, calldata
->timestamp
);
3166 case -NFS4ERR_STALE_STATEID
:
3167 case -NFS4ERR_EXPIRED
:
3168 nfs4_schedule_state_recovery(calldata
->server
->nfs4_state
);
3171 if (nfs4_async_handle_error(task
, calldata
->server
) == -EAGAIN
) {
3172 rpc_restart_call(task
);
3177 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3179 struct nfs4_unlockdata
*calldata
= data
;
3180 struct rpc_message msg
= {
3181 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3182 .rpc_argp
= &calldata
->arg
,
3183 .rpc_resp
= &calldata
->res
,
3184 .rpc_cred
= calldata
->lsp
->ls_state
->owner
->so_cred
,
3187 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3189 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3190 /* Note: exit _without_ running nfs4_locku_done */
3191 task
->tk_action
= NULL
;
3194 calldata
->timestamp
= jiffies
;
3195 rpc_call_setup(task
, &msg
, 0);
3198 static const struct rpc_call_ops nfs4_locku_ops
= {
3199 .rpc_call_prepare
= nfs4_locku_prepare
,
3200 .rpc_call_done
= nfs4_locku_done
,
3201 .rpc_release
= nfs4_locku_release_calldata
,
3204 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3205 struct nfs_open_context
*ctx
,
3206 struct nfs4_lock_state
*lsp
,
3207 struct nfs_seqid
*seqid
)
3209 struct nfs4_unlockdata
*data
;
3211 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3213 nfs_free_seqid(seqid
);
3214 return ERR_PTR(-ENOMEM
);
3217 /* Unlock _before_ we do the RPC call */
3218 do_vfs_lock(fl
->fl_file
, fl
);
3219 return rpc_run_task(NFS_CLIENT(lsp
->ls_state
->inode
), RPC_TASK_ASYNC
, &nfs4_locku_ops
, data
);
3222 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3224 struct nfs_seqid
*seqid
;
3225 struct nfs4_lock_state
*lsp
;
3226 struct rpc_task
*task
;
3229 /* Is this a delegated lock? */
3230 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3232 /* Is this open_owner holding any locks on the server? */
3233 if (test_bit(LK_STATE_IN_USE
, &state
->flags
) == 0)
3236 status
= nfs4_set_lock_state(state
, request
);
3239 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3241 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3244 task
= nfs4_do_unlck(request
, request
->fl_file
->private_data
, lsp
, seqid
);
3245 status
= PTR_ERR(task
);
3248 status
= nfs4_wait_for_completion_rpc_task(task
);
3249 rpc_release_task(task
);
3252 do_vfs_lock(request
->fl_file
, request
);
3256 struct nfs4_lockdata
{
3257 struct nfs_lock_args arg
;
3258 struct nfs_lock_res res
;
3259 struct nfs4_lock_state
*lsp
;
3260 struct nfs_open_context
*ctx
;
3261 struct file_lock fl
;
3262 unsigned long timestamp
;
3267 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3268 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3270 struct nfs4_lockdata
*p
;
3271 struct inode
*inode
= lsp
->ls_state
->inode
;
3272 struct nfs_server
*server
= NFS_SERVER(inode
);
3274 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3278 p
->arg
.fh
= NFS_FH(inode
);
3280 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3281 if (p
->arg
.lock_seqid
== NULL
)
3283 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3284 p
->arg
.lock_owner
.clientid
= server
->nfs4_state
->cl_clientid
;
3285 p
->arg
.lock_owner
.id
= lsp
->ls_id
;
3287 atomic_inc(&lsp
->ls_count
);
3288 p
->ctx
= get_nfs_open_context(ctx
);
3289 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3296 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3298 struct nfs4_lockdata
*data
= calldata
;
3299 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3300 struct nfs4_state_owner
*sp
= state
->owner
;
3301 struct rpc_message msg
= {
3302 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3303 .rpc_argp
= &data
->arg
,
3304 .rpc_resp
= &data
->res
,
3305 .rpc_cred
= sp
->so_cred
,
3308 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3310 dprintk("%s: begin!\n", __FUNCTION__
);
3311 /* Do we need to do an open_to_lock_owner? */
3312 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3313 data
->arg
.open_seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
3314 if (data
->arg
.open_seqid
== NULL
) {
3315 data
->rpc_status
= -ENOMEM
;
3316 task
->tk_action
= NULL
;
3319 data
->arg
.open_stateid
= &state
->stateid
;
3320 data
->arg
.new_lock_owner
= 1;
3322 data
->timestamp
= jiffies
;
3323 rpc_call_setup(task
, &msg
, 0);
3325 dprintk("%s: done!, ret = %d\n", __FUNCTION__
, data
->rpc_status
);
3328 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3330 struct nfs4_lockdata
*data
= calldata
;
3332 dprintk("%s: begin!\n", __FUNCTION__
);
3334 data
->rpc_status
= task
->tk_status
;
3335 if (RPC_ASSASSINATED(task
))
3337 if (data
->arg
.new_lock_owner
!= 0) {
3338 nfs_increment_open_seqid(data
->rpc_status
, data
->arg
.open_seqid
);
3339 if (data
->rpc_status
== 0)
3340 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3344 if (data
->rpc_status
== 0) {
3345 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3346 sizeof(data
->lsp
->ls_stateid
.data
));
3347 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3348 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
3350 nfs_increment_lock_seqid(data
->rpc_status
, data
->arg
.lock_seqid
);
3352 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, data
->rpc_status
);
3355 static void nfs4_lock_release(void *calldata
)
3357 struct nfs4_lockdata
*data
= calldata
;
3359 dprintk("%s: begin!\n", __FUNCTION__
);
3360 if (data
->arg
.open_seqid
!= NULL
)
3361 nfs_free_seqid(data
->arg
.open_seqid
);
3362 if (data
->cancelled
!= 0) {
3363 struct rpc_task
*task
;
3364 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3365 data
->arg
.lock_seqid
);
3367 rpc_release_task(task
);
3368 dprintk("%s: cancelling lock!\n", __FUNCTION__
);
3370 nfs_free_seqid(data
->arg
.lock_seqid
);
3371 nfs4_put_lock_state(data
->lsp
);
3372 put_nfs_open_context(data
->ctx
);
3374 dprintk("%s: done!\n", __FUNCTION__
);
3377 static const struct rpc_call_ops nfs4_lock_ops
= {
3378 .rpc_call_prepare
= nfs4_lock_prepare
,
3379 .rpc_call_done
= nfs4_lock_done
,
3380 .rpc_release
= nfs4_lock_release
,
3383 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3385 struct nfs4_lockdata
*data
;
3386 struct rpc_task
*task
;
3389 dprintk("%s: begin!\n", __FUNCTION__
);
3390 data
= nfs4_alloc_lockdata(fl
, fl
->fl_file
->private_data
,
3391 fl
->fl_u
.nfs4_fl
.owner
);
3395 data
->arg
.block
= 1;
3397 data
->arg
.reclaim
= 1;
3398 task
= rpc_run_task(NFS_CLIENT(state
->inode
), RPC_TASK_ASYNC
,
3399 &nfs4_lock_ops
, data
);
3401 return PTR_ERR(task
);
3402 ret
= nfs4_wait_for_completion_rpc_task(task
);
3404 ret
= data
->rpc_status
;
3405 if (ret
== -NFS4ERR_DENIED
)
3408 data
->cancelled
= 1;
3409 rpc_release_task(task
);
3410 dprintk("%s: done, ret = %d!\n", __FUNCTION__
, ret
);
3414 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
3416 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3417 struct nfs4_exception exception
= { };
3420 /* Cache the lock if possible... */
3421 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3424 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
3425 if (err
!= -NFS4ERR_DELAY
)
3427 nfs4_handle_exception(server
, err
, &exception
);
3428 } while (exception
.retry
);
3432 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
3434 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3435 struct nfs4_exception exception
= { };
3438 err
= nfs4_set_lock_state(state
, request
);
3442 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
3443 if (err
!= -NFS4ERR_DELAY
)
3445 nfs4_handle_exception(server
, err
, &exception
);
3446 } while (exception
.retry
);
3450 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3452 struct nfs4_client
*clp
= state
->owner
->so_client
;
3455 /* Is this a delegated open? */
3456 if (NFS_I(state
->inode
)->delegation_state
!= 0) {
3457 /* Yes: cache locks! */
3458 status
= do_vfs_lock(request
->fl_file
, request
);
3459 /* ...but avoid races with delegation recall... */
3460 if (status
< 0 || test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3463 down_read(&clp
->cl_sem
);
3464 status
= nfs4_set_lock_state(state
, request
);
3467 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
3470 /* Note: we always want to sleep here! */
3471 request
->fl_flags
|= FL_SLEEP
;
3472 if (do_vfs_lock(request
->fl_file
, request
) < 0)
3473 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __FUNCTION__
);
3475 up_read(&clp
->cl_sem
);
3479 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3481 struct nfs4_exception exception
= { };
3485 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3486 _nfs4_proc_setlk(state
, cmd
, request
),
3488 } while (exception
.retry
);
3493 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
3495 struct nfs_open_context
*ctx
;
3496 struct nfs4_state
*state
;
3497 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
3500 /* verify open state */
3501 ctx
= (struct nfs_open_context
*)filp
->private_data
;
3504 if (request
->fl_start
< 0 || request
->fl_end
< 0)
3508 return nfs4_proc_getlk(state
, F_GETLK
, request
);
3510 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
3513 if (request
->fl_type
== F_UNLCK
)
3514 return nfs4_proc_unlck(state
, cmd
, request
);
3517 status
= nfs4_proc_setlk(state
, cmd
, request
);
3518 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
3520 timeout
= nfs4_set_lock_task_retry(timeout
);
3521 status
= -ERESTARTSYS
;
3524 } while(status
< 0);
3528 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
3530 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3531 struct nfs4_exception exception
= { };
3534 err
= nfs4_set_lock_state(state
, fl
);
3538 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
3539 if (err
!= -NFS4ERR_DELAY
)
3541 err
= nfs4_handle_exception(server
, err
, &exception
);
3542 } while (exception
.retry
);
3547 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
3549 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
3550 size_t buflen
, int flags
)
3552 struct inode
*inode
= dentry
->d_inode
;
3554 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3557 if (!S_ISREG(inode
->i_mode
) &&
3558 (!S_ISDIR(inode
->i_mode
) || inode
->i_mode
& S_ISVTX
))
3561 return nfs4_proc_set_acl(inode
, buf
, buflen
);
3564 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
3565 * and that's what we'll do for e.g. user attributes that haven't been set.
3566 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
3567 * attributes in kernel-managed attribute namespaces. */
3568 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
3571 struct inode
*inode
= dentry
->d_inode
;
3573 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
3576 return nfs4_proc_get_acl(inode
, buf
, buflen
);
3579 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
3581 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
3583 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
3585 if (buf
&& buflen
< len
)
3588 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
3592 int nfs4_proc_fs_locations(struct inode
*dir
, struct dentry
*dentry
,
3593 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
3595 struct nfs_server
*server
= NFS_SERVER(dir
);
3597 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
3598 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
3600 struct nfs4_fs_locations_arg args
= {
3601 .dir_fh
= NFS_FH(dir
),
3602 .name
= &dentry
->d_name
,
3606 struct rpc_message msg
= {
3607 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
3609 .rpc_resp
= fs_locations
,
3613 dprintk("%s: start\n", __FUNCTION__
);
3614 fs_locations
->fattr
.valid
= 0;
3615 fs_locations
->server
= server
;
3616 fs_locations
->nlocations
= 0;
3617 status
= rpc_call_sync(server
->client
, &msg
, 0);
3618 dprintk("%s: returned status = %d\n", __FUNCTION__
, status
);
3622 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops
= {
3623 .recover_open
= nfs4_open_reclaim
,
3624 .recover_lock
= nfs4_lock_reclaim
,
3627 struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops
= {
3628 .recover_open
= nfs4_open_expired
,
3629 .recover_lock
= nfs4_lock_expired
,
3632 static struct inode_operations nfs4_file_inode_operations
= {
3633 .permission
= nfs_permission
,
3634 .getattr
= nfs_getattr
,
3635 .setattr
= nfs_setattr
,
3636 .getxattr
= nfs4_getxattr
,
3637 .setxattr
= nfs4_setxattr
,
3638 .listxattr
= nfs4_listxattr
,
3641 struct nfs_rpc_ops nfs_v4_clientops
= {
3642 .version
= 4, /* protocol version */
3643 .dentry_ops
= &nfs4_dentry_operations
,
3644 .dir_inode_ops
= &nfs4_dir_inode_operations
,
3645 .file_inode_ops
= &nfs4_file_inode_operations
,
3646 .getroot
= nfs4_proc_get_root
,
3647 .getattr
= nfs4_proc_getattr
,
3648 .setattr
= nfs4_proc_setattr
,
3649 .lookup
= nfs4_proc_lookup
,
3650 .access
= nfs4_proc_access
,
3651 .readlink
= nfs4_proc_readlink
,
3652 .read
= nfs4_proc_read
,
3653 .write
= nfs4_proc_write
,
3654 .commit
= nfs4_proc_commit
,
3655 .create
= nfs4_proc_create
,
3656 .remove
= nfs4_proc_remove
,
3657 .unlink_setup
= nfs4_proc_unlink_setup
,
3658 .unlink_done
= nfs4_proc_unlink_done
,
3659 .rename
= nfs4_proc_rename
,
3660 .link
= nfs4_proc_link
,
3661 .symlink
= nfs4_proc_symlink
,
3662 .mkdir
= nfs4_proc_mkdir
,
3663 .rmdir
= nfs4_proc_remove
,
3664 .readdir
= nfs4_proc_readdir
,
3665 .mknod
= nfs4_proc_mknod
,
3666 .statfs
= nfs4_proc_statfs
,
3667 .fsinfo
= nfs4_proc_fsinfo
,
3668 .pathconf
= nfs4_proc_pathconf
,
3669 .decode_dirent
= nfs4_decode_dirent
,
3670 .read_setup
= nfs4_proc_read_setup
,
3671 .read_done
= nfs4_read_done
,
3672 .write_setup
= nfs4_proc_write_setup
,
3673 .write_done
= nfs4_write_done
,
3674 .commit_setup
= nfs4_proc_commit_setup
,
3675 .commit_done
= nfs4_commit_done
,
3676 .file_open
= nfs_open
,
3677 .file_release
= nfs_release
,
3678 .lock
= nfs4_proc_lock
,
3679 .clear_acl_cache
= nfs4_zap_acl_attr
,