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/namei.h>
49 #include <linux/mount.h>
50 #include <linux/module.h>
51 #include <linux/sunrpc/bc_xprt.h>
54 #include "delegation.h"
59 #define NFSDBG_FACILITY NFSDBG_PROC
61 #define NFS4_POLL_RETRY_MIN (HZ/10)
62 #define NFS4_POLL_RETRY_MAX (15*HZ)
65 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
66 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
67 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
68 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
69 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
71 /* Prevent leaks of NFSv4 errors into userland */
72 static int nfs4_map_errors(int err
)
75 dprintk("%s could not handle NFSv4 error %d\n",
83 * This is our standard bitmap for GETATTR requests.
85 const u32 nfs4_fattr_bitmap
[2] = {
90 | FATTR4_WORD0_FILEID
,
92 | FATTR4_WORD1_NUMLINKS
94 | FATTR4_WORD1_OWNER_GROUP
96 | FATTR4_WORD1_SPACE_USED
97 | FATTR4_WORD1_TIME_ACCESS
98 | FATTR4_WORD1_TIME_METADATA
99 | FATTR4_WORD1_TIME_MODIFY
102 const u32 nfs4_statfs_bitmap
[2] = {
103 FATTR4_WORD0_FILES_AVAIL
104 | FATTR4_WORD0_FILES_FREE
105 | FATTR4_WORD0_FILES_TOTAL
,
106 FATTR4_WORD1_SPACE_AVAIL
107 | FATTR4_WORD1_SPACE_FREE
108 | FATTR4_WORD1_SPACE_TOTAL
111 const u32 nfs4_pathconf_bitmap
[2] = {
113 | FATTR4_WORD0_MAXNAME
,
117 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
118 | FATTR4_WORD0_MAXREAD
119 | FATTR4_WORD0_MAXWRITE
120 | FATTR4_WORD0_LEASE_TIME
,
124 const u32 nfs4_fs_locations_bitmap
[2] = {
126 | FATTR4_WORD0_CHANGE
129 | FATTR4_WORD0_FILEID
130 | FATTR4_WORD0_FS_LOCATIONS
,
132 | FATTR4_WORD1_NUMLINKS
134 | FATTR4_WORD1_OWNER_GROUP
135 | FATTR4_WORD1_RAWDEV
136 | FATTR4_WORD1_SPACE_USED
137 | FATTR4_WORD1_TIME_ACCESS
138 | FATTR4_WORD1_TIME_METADATA
139 | FATTR4_WORD1_TIME_MODIFY
140 | FATTR4_WORD1_MOUNTED_ON_FILEID
143 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
144 struct nfs4_readdir_arg
*readdir
)
148 BUG_ON(readdir
->count
< 80);
150 readdir
->cookie
= cookie
;
151 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
156 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
161 * NFSv4 servers do not return entries for '.' and '..'
162 * Therefore, we fake these entries here. We let '.'
163 * have cookie 0 and '..' have cookie 1. Note that
164 * when talking to the server, we always send cookie 0
167 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
170 *p
++ = xdr_one
; /* next */
171 *p
++ = xdr_zero
; /* cookie, first word */
172 *p
++ = xdr_one
; /* cookie, second word */
173 *p
++ = xdr_one
; /* entry len */
174 memcpy(p
, ".\0\0\0", 4); /* entry */
176 *p
++ = xdr_one
; /* bitmap length */
177 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
178 *p
++ = htonl(8); /* attribute buffer length */
179 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
182 *p
++ = xdr_one
; /* next */
183 *p
++ = xdr_zero
; /* cookie, first word */
184 *p
++ = xdr_two
; /* cookie, second word */
185 *p
++ = xdr_two
; /* entry len */
186 memcpy(p
, "..\0\0", 4); /* entry */
188 *p
++ = xdr_one
; /* bitmap length */
189 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
190 *p
++ = htonl(8); /* attribute buffer length */
191 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
193 readdir
->pgbase
= (char *)p
- (char *)start
;
194 readdir
->count
-= readdir
->pgbase
;
195 kunmap_atomic(start
, KM_USER0
);
198 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
204 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
205 nfs_wait_bit_killable
, TASK_KILLABLE
);
209 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
216 *timeout
= NFS4_POLL_RETRY_MIN
;
217 if (*timeout
> NFS4_POLL_RETRY_MAX
)
218 *timeout
= NFS4_POLL_RETRY_MAX
;
219 schedule_timeout_killable(*timeout
);
220 if (fatal_signal_pending(current
))
226 /* This is the error handling routine for processes that are allowed
229 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
231 struct nfs_client
*clp
= server
->nfs_client
;
232 struct nfs4_state
*state
= exception
->state
;
235 exception
->retry
= 0;
239 case -NFS4ERR_ADMIN_REVOKED
:
240 case -NFS4ERR_BAD_STATEID
:
241 case -NFS4ERR_OPENMODE
:
244 nfs4_state_mark_reclaim_nograce(clp
, state
);
245 case -NFS4ERR_STALE_CLIENTID
:
246 case -NFS4ERR_STALE_STATEID
:
247 case -NFS4ERR_EXPIRED
:
248 nfs4_schedule_state_recovery(clp
);
249 ret
= nfs4_wait_clnt_recover(clp
);
251 exception
->retry
= 1;
252 #if !defined(CONFIG_NFS_V4_1)
254 #else /* !defined(CONFIG_NFS_V4_1) */
255 if (!nfs4_has_session(server
->nfs_client
))
258 case -NFS4ERR_BADSESSION
:
259 case -NFS4ERR_BADSLOT
:
260 case -NFS4ERR_BAD_HIGH_SLOT
:
261 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
262 case -NFS4ERR_DEADSESSION
:
263 case -NFS4ERR_SEQ_FALSE_RETRY
:
264 case -NFS4ERR_SEQ_MISORDERED
:
265 dprintk("%s ERROR: %d Reset session\n", __func__
,
267 set_bit(NFS4CLNT_SESSION_SETUP
, &clp
->cl_state
);
268 exception
->retry
= 1;
270 #endif /* !defined(CONFIG_NFS_V4_1) */
271 case -NFS4ERR_FILE_OPEN
:
274 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
277 case -NFS4ERR_OLD_STATEID
:
278 exception
->retry
= 1;
280 /* We failed to handle the error */
281 return nfs4_map_errors(ret
);
285 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
287 struct nfs_client
*clp
= server
->nfs_client
;
288 spin_lock(&clp
->cl_lock
);
289 if (time_before(clp
->cl_last_renewal
,timestamp
))
290 clp
->cl_last_renewal
= timestamp
;
291 spin_unlock(&clp
->cl_lock
);
294 #if defined(CONFIG_NFS_V4_1)
297 * nfs4_free_slot - free a slot and efficiently update slot table.
299 * freeing a slot is trivially done by clearing its respective bit
301 * If the freed slotid equals highest_used_slotid we want to update it
302 * so that the server would be able to size down the slot table if needed,
303 * otherwise we know that the highest_used_slotid is still in use.
304 * When updating highest_used_slotid there may be "holes" in the bitmap
305 * so we need to scan down from highest_used_slotid to 0 looking for the now
306 * highest slotid in use.
307 * If none found, highest_used_slotid is set to -1.
310 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u8 free_slotid
)
312 int slotid
= free_slotid
;
314 spin_lock(&tbl
->slot_tbl_lock
);
315 /* clear used bit in bitmap */
316 __clear_bit(slotid
, tbl
->used_slots
);
318 /* update highest_used_slotid when it is freed */
319 if (slotid
== tbl
->highest_used_slotid
) {
320 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
321 if (slotid
>= 0 && slotid
< tbl
->max_slots
)
322 tbl
->highest_used_slotid
= slotid
;
324 tbl
->highest_used_slotid
= -1;
326 rpc_wake_up_next(&tbl
->slot_tbl_waitq
);
327 spin_unlock(&tbl
->slot_tbl_lock
);
328 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
329 free_slotid
, tbl
->highest_used_slotid
);
332 void nfs41_sequence_free_slot(const struct nfs_client
*clp
,
333 struct nfs4_sequence_res
*res
)
335 struct nfs4_slot_table
*tbl
;
337 if (!nfs4_has_session(clp
)) {
338 dprintk("%s: No session\n", __func__
);
341 tbl
= &clp
->cl_session
->fc_slot_table
;
342 if (res
->sr_slotid
== NFS4_MAX_SLOT_TABLE
) {
343 dprintk("%s: No slot\n", __func__
);
344 /* just wake up the next guy waiting since
345 * we may have not consumed a slot after all */
346 rpc_wake_up_next(&tbl
->slot_tbl_waitq
);
349 nfs4_free_slot(tbl
, res
->sr_slotid
);
350 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
353 static void nfs41_sequence_done(struct nfs_client
*clp
,
354 struct nfs4_sequence_res
*res
,
357 unsigned long timestamp
;
358 struct nfs4_slot_table
*tbl
;
359 struct nfs4_slot
*slot
;
362 * sr_status remains 1 if an RPC level error occurred. The server
363 * may or may not have processed the sequence operation..
364 * Proceed as if the server received and processed the sequence
367 if (res
->sr_status
== 1)
368 res
->sr_status
= NFS_OK
;
370 /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */
371 if (res
->sr_slotid
== NFS4_MAX_SLOT_TABLE
)
374 tbl
= &clp
->cl_session
->fc_slot_table
;
375 slot
= tbl
->slots
+ res
->sr_slotid
;
377 if (res
->sr_status
== 0) {
378 /* Update the slot's sequence and clientid lease timer */
380 timestamp
= res
->sr_renewal_time
;
381 spin_lock(&clp
->cl_lock
);
382 if (time_before(clp
->cl_last_renewal
, timestamp
))
383 clp
->cl_last_renewal
= timestamp
;
384 spin_unlock(&clp
->cl_lock
);
388 /* The session may be reset by one of the error handlers. */
389 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
390 nfs41_sequence_free_slot(clp
, res
);
394 * nfs4_find_slot - efficiently look for a free slot
396 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
397 * If found, we mark the slot as used, update the highest_used_slotid,
398 * and respectively set up the sequence operation args.
399 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
401 * Note: must be called with under the slot_tbl_lock.
404 nfs4_find_slot(struct nfs4_slot_table
*tbl
, struct rpc_task
*task
)
407 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
408 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
410 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
411 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
413 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
414 if (slotid
>= tbl
->max_slots
)
416 __set_bit(slotid
, tbl
->used_slots
);
417 if (slotid
> tbl
->highest_used_slotid
)
418 tbl
->highest_used_slotid
= slotid
;
421 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
422 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
426 static int nfs4_recover_session(struct nfs4_session
*session
)
428 struct nfs_client
*clp
= session
->clp
;
432 ret
= nfs4_wait_clnt_recover(clp
);
435 if (!test_bit(NFS4CLNT_SESSION_SETUP
, &clp
->cl_state
))
437 nfs4_schedule_state_manager(clp
);
442 static int nfs41_setup_sequence(struct nfs4_session
*session
,
443 struct nfs4_sequence_args
*args
,
444 struct nfs4_sequence_res
*res
,
446 struct rpc_task
*task
)
448 struct nfs4_slot
*slot
;
449 struct nfs4_slot_table
*tbl
;
453 dprintk("--> %s\n", __func__
);
454 /* slot already allocated? */
455 if (res
->sr_slotid
!= NFS4_MAX_SLOT_TABLE
)
458 memset(res
, 0, sizeof(*res
));
459 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
460 tbl
= &session
->fc_slot_table
;
462 spin_lock(&tbl
->slot_tbl_lock
);
463 if (test_bit(NFS4CLNT_SESSION_SETUP
, &session
->clp
->cl_state
)) {
464 if (tbl
->highest_used_slotid
!= -1) {
465 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
466 spin_unlock(&tbl
->slot_tbl_lock
);
467 dprintk("<-- %s: Session reset: draining\n", __func__
);
471 /* The slot table is empty; start the reset thread */
472 dprintk("%s Session Reset\n", __func__
);
473 spin_unlock(&tbl
->slot_tbl_lock
);
474 status
= nfs4_recover_session(session
);
477 spin_lock(&tbl
->slot_tbl_lock
);
480 slotid
= nfs4_find_slot(tbl
, task
);
481 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
482 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
483 spin_unlock(&tbl
->slot_tbl_lock
);
484 dprintk("<-- %s: no free slots\n", __func__
);
487 spin_unlock(&tbl
->slot_tbl_lock
);
489 slot
= tbl
->slots
+ slotid
;
490 args
->sa_session
= session
;
491 args
->sa_slotid
= slotid
;
492 args
->sa_cache_this
= cache_reply
;
494 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
496 res
->sr_session
= session
;
497 res
->sr_slotid
= slotid
;
498 res
->sr_renewal_time
= jiffies
;
500 * sr_status is only set in decode_sequence, and so will remain
501 * set to 1 if an rpc level failure occurs.
507 int nfs4_setup_sequence(struct nfs_client
*clp
,
508 struct nfs4_sequence_args
*args
,
509 struct nfs4_sequence_res
*res
,
511 struct rpc_task
*task
)
515 dprintk("--> %s clp %p session %p sr_slotid %d\n",
516 __func__
, clp
, clp
->cl_session
, res
->sr_slotid
);
518 if (!nfs4_has_session(clp
))
520 ret
= nfs41_setup_sequence(clp
->cl_session
, args
, res
, cache_reply
,
522 if (ret
!= -EAGAIN
) {
523 /* terminate rpc task */
524 task
->tk_status
= ret
;
525 task
->tk_action
= NULL
;
528 dprintk("<-- %s status=%d\n", __func__
, ret
);
532 struct nfs41_call_sync_data
{
533 struct nfs_client
*clp
;
534 struct nfs4_sequence_args
*seq_args
;
535 struct nfs4_sequence_res
*seq_res
;
539 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
541 struct nfs41_call_sync_data
*data
= calldata
;
543 dprintk("--> %s data->clp->cl_session %p\n", __func__
,
544 data
->clp
->cl_session
);
545 if (nfs4_setup_sequence(data
->clp
, data
->seq_args
,
546 data
->seq_res
, data
->cache_reply
, task
))
548 rpc_call_start(task
);
551 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
553 struct nfs41_call_sync_data
*data
= calldata
;
555 nfs41_sequence_done(data
->clp
, data
->seq_res
, task
->tk_status
);
556 nfs41_sequence_free_slot(data
->clp
, data
->seq_res
);
559 struct rpc_call_ops nfs41_call_sync_ops
= {
560 .rpc_call_prepare
= nfs41_call_sync_prepare
,
561 .rpc_call_done
= nfs41_call_sync_done
,
564 static int nfs4_call_sync_sequence(struct nfs_client
*clp
,
565 struct rpc_clnt
*clnt
,
566 struct rpc_message
*msg
,
567 struct nfs4_sequence_args
*args
,
568 struct nfs4_sequence_res
*res
,
572 struct rpc_task
*task
;
573 struct nfs41_call_sync_data data
= {
577 .cache_reply
= cache_reply
,
579 struct rpc_task_setup task_setup
= {
582 .callback_ops
= &nfs41_call_sync_ops
,
583 .callback_data
= &data
586 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
587 task
= rpc_run_task(&task_setup
);
591 ret
= task
->tk_status
;
597 int _nfs4_call_sync_session(struct nfs_server
*server
,
598 struct rpc_message
*msg
,
599 struct nfs4_sequence_args
*args
,
600 struct nfs4_sequence_res
*res
,
603 return nfs4_call_sync_sequence(server
->nfs_client
, server
->client
,
604 msg
, args
, res
, cache_reply
);
607 #endif /* CONFIG_NFS_V4_1 */
609 int _nfs4_call_sync(struct nfs_server
*server
,
610 struct rpc_message
*msg
,
611 struct nfs4_sequence_args
*args
,
612 struct nfs4_sequence_res
*res
,
615 args
->sa_session
= res
->sr_session
= NULL
;
616 return rpc_call_sync(server
->client
, msg
, 0);
619 #define nfs4_call_sync(server, msg, args, res, cache_reply) \
620 (server)->nfs_client->cl_call_sync((server), (msg), &(args)->seq_args, \
621 &(res)->seq_res, (cache_reply))
623 static void nfs4_sequence_done(const struct nfs_server
*server
,
624 struct nfs4_sequence_res
*res
, int rpc_status
)
626 #ifdef CONFIG_NFS_V4_1
627 if (nfs4_has_session(server
->nfs_client
))
628 nfs41_sequence_done(server
->nfs_client
, res
, rpc_status
);
629 #endif /* CONFIG_NFS_V4_1 */
632 /* no restart, therefore free slot here */
633 static void nfs4_sequence_done_free_slot(const struct nfs_server
*server
,
634 struct nfs4_sequence_res
*res
,
637 nfs4_sequence_done(server
, res
, rpc_status
);
638 nfs4_sequence_free_slot(server
->nfs_client
, res
);
641 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
643 struct nfs_inode
*nfsi
= NFS_I(dir
);
645 spin_lock(&dir
->i_lock
);
646 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
647 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
648 nfs_force_lookup_revalidate(dir
);
649 nfsi
->change_attr
= cinfo
->after
;
650 spin_unlock(&dir
->i_lock
);
653 struct nfs4_opendata
{
655 struct nfs_openargs o_arg
;
656 struct nfs_openres o_res
;
657 struct nfs_open_confirmargs c_arg
;
658 struct nfs_open_confirmres c_res
;
659 struct nfs_fattr f_attr
;
660 struct nfs_fattr dir_attr
;
663 struct nfs4_state_owner
*owner
;
664 struct nfs4_state
*state
;
666 unsigned long timestamp
;
667 unsigned int rpc_done
: 1;
673 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
675 p
->o_res
.f_attr
= &p
->f_attr
;
676 p
->o_res
.dir_attr
= &p
->dir_attr
;
677 p
->o_res
.seqid
= p
->o_arg
.seqid
;
678 p
->c_res
.seqid
= p
->c_arg
.seqid
;
679 p
->o_res
.server
= p
->o_arg
.server
;
680 nfs_fattr_init(&p
->f_attr
);
681 nfs_fattr_init(&p
->dir_attr
);
682 p
->o_res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
685 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
686 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
687 const struct iattr
*attrs
)
689 struct dentry
*parent
= dget_parent(path
->dentry
);
690 struct inode
*dir
= parent
->d_inode
;
691 struct nfs_server
*server
= NFS_SERVER(dir
);
692 struct nfs4_opendata
*p
;
694 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
697 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
698 if (p
->o_arg
.seqid
== NULL
)
700 p
->path
.mnt
= mntget(path
->mnt
);
701 p
->path
.dentry
= dget(path
->dentry
);
704 atomic_inc(&sp
->so_count
);
705 p
->o_arg
.fh
= NFS_FH(dir
);
706 p
->o_arg
.open_flags
= flags
;
707 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
708 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
709 p
->o_arg
.id
= sp
->so_owner_id
.id
;
710 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
711 p
->o_arg
.server
= server
;
712 p
->o_arg
.bitmask
= server
->attr_bitmask
;
713 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
714 if (flags
& O_EXCL
) {
715 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
718 } else if (flags
& O_CREAT
) {
719 p
->o_arg
.u
.attrs
= &p
->attrs
;
720 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
722 p
->c_arg
.fh
= &p
->o_res
.fh
;
723 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
724 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
725 nfs4_init_opendata_res(p
);
735 static void nfs4_opendata_free(struct kref
*kref
)
737 struct nfs4_opendata
*p
= container_of(kref
,
738 struct nfs4_opendata
, kref
);
740 nfs_free_seqid(p
->o_arg
.seqid
);
741 if (p
->state
!= NULL
)
742 nfs4_put_open_state(p
->state
);
743 nfs4_put_state_owner(p
->owner
);
749 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
752 kref_put(&p
->kref
, nfs4_opendata_free
);
755 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
759 ret
= rpc_wait_for_completion_task(task
);
763 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
767 if (open_mode
& O_EXCL
)
769 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
771 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0;
774 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0;
776 case FMODE_READ
|FMODE_WRITE
:
777 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0;
783 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
785 if ((delegation
->type
& fmode
) != fmode
)
787 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
789 nfs_mark_delegation_referenced(delegation
);
793 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
802 case FMODE_READ
|FMODE_WRITE
:
805 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
808 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
810 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
811 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
812 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
815 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
818 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
820 case FMODE_READ
|FMODE_WRITE
:
821 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
825 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
827 write_seqlock(&state
->seqlock
);
828 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
829 write_sequnlock(&state
->seqlock
);
832 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
835 * Protect the call to nfs4_state_set_mode_locked and
836 * serialise the stateid update
838 write_seqlock(&state
->seqlock
);
839 if (deleg_stateid
!= NULL
) {
840 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
841 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
843 if (open_stateid
!= NULL
)
844 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
845 write_sequnlock(&state
->seqlock
);
846 spin_lock(&state
->owner
->so_lock
);
847 update_open_stateflags(state
, fmode
);
848 spin_unlock(&state
->owner
->so_lock
);
851 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
853 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
854 struct nfs_delegation
*deleg_cur
;
857 fmode
&= (FMODE_READ
|FMODE_WRITE
);
860 deleg_cur
= rcu_dereference(nfsi
->delegation
);
861 if (deleg_cur
== NULL
)
864 spin_lock(&deleg_cur
->lock
);
865 if (nfsi
->delegation
!= deleg_cur
||
866 (deleg_cur
->type
& fmode
) != fmode
)
867 goto no_delegation_unlock
;
869 if (delegation
== NULL
)
870 delegation
= &deleg_cur
->stateid
;
871 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
872 goto no_delegation_unlock
;
874 nfs_mark_delegation_referenced(deleg_cur
);
875 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
877 no_delegation_unlock
:
878 spin_unlock(&deleg_cur
->lock
);
882 if (!ret
&& open_stateid
!= NULL
) {
883 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
891 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
893 struct nfs_delegation
*delegation
;
896 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
897 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
902 nfs_inode_return_delegation(inode
);
905 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
907 struct nfs4_state
*state
= opendata
->state
;
908 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
909 struct nfs_delegation
*delegation
;
910 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
911 fmode_t fmode
= opendata
->o_arg
.fmode
;
912 nfs4_stateid stateid
;
916 if (can_open_cached(state
, fmode
, open_mode
)) {
917 spin_lock(&state
->owner
->so_lock
);
918 if (can_open_cached(state
, fmode
, open_mode
)) {
919 update_open_stateflags(state
, fmode
);
920 spin_unlock(&state
->owner
->so_lock
);
921 goto out_return_state
;
923 spin_unlock(&state
->owner
->so_lock
);
926 delegation
= rcu_dereference(nfsi
->delegation
);
927 if (delegation
== NULL
||
928 !can_open_delegated(delegation
, fmode
)) {
932 /* Save the delegation */
933 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
935 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
940 /* Try to update the stateid using the delegation */
941 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
942 goto out_return_state
;
947 atomic_inc(&state
->count
);
951 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
954 struct nfs4_state
*state
= NULL
;
955 struct nfs_delegation
*delegation
;
958 if (!data
->rpc_done
) {
959 state
= nfs4_try_open_cached(data
);
964 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
966 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
967 ret
= PTR_ERR(inode
);
971 state
= nfs4_get_open_state(inode
, data
->owner
);
974 if (data
->o_res
.delegation_type
!= 0) {
975 int delegation_flags
= 0;
978 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
980 delegation_flags
= delegation
->flags
;
982 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
983 nfs_inode_set_delegation(state
->inode
,
984 data
->owner
->so_cred
,
987 nfs_inode_reclaim_delegation(state
->inode
,
988 data
->owner
->so_cred
,
992 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1000 return ERR_PTR(ret
);
1003 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1005 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1006 struct nfs_open_context
*ctx
;
1008 spin_lock(&state
->inode
->i_lock
);
1009 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1010 if (ctx
->state
!= state
)
1012 get_nfs_open_context(ctx
);
1013 spin_unlock(&state
->inode
->i_lock
);
1016 spin_unlock(&state
->inode
->i_lock
);
1017 return ERR_PTR(-ENOENT
);
1020 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1022 struct nfs4_opendata
*opendata
;
1024 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, 0, NULL
);
1025 if (opendata
== NULL
)
1026 return ERR_PTR(-ENOMEM
);
1027 opendata
->state
= state
;
1028 atomic_inc(&state
->count
);
1032 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1034 struct nfs4_state
*newstate
;
1037 opendata
->o_arg
.open_flags
= 0;
1038 opendata
->o_arg
.fmode
= fmode
;
1039 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1040 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1041 nfs4_init_opendata_res(opendata
);
1042 ret
= _nfs4_proc_open(opendata
);
1045 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1046 if (IS_ERR(newstate
))
1047 return PTR_ERR(newstate
);
1048 nfs4_close_state(&opendata
->path
, newstate
, fmode
);
1053 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1055 struct nfs4_state
*newstate
;
1058 /* memory barrier prior to reading state->n_* */
1059 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1061 if (state
->n_rdwr
!= 0) {
1062 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1065 if (newstate
!= state
)
1068 if (state
->n_wronly
!= 0) {
1069 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1072 if (newstate
!= state
)
1075 if (state
->n_rdonly
!= 0) {
1076 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1079 if (newstate
!= state
)
1083 * We may have performed cached opens for all three recoveries.
1084 * Check if we need to update the current stateid.
1086 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1087 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1088 write_seqlock(&state
->seqlock
);
1089 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1090 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1091 write_sequnlock(&state
->seqlock
);
1098 * reclaim state on the server after a reboot.
1100 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1102 struct nfs_delegation
*delegation
;
1103 struct nfs4_opendata
*opendata
;
1104 fmode_t delegation_type
= 0;
1107 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1108 if (IS_ERR(opendata
))
1109 return PTR_ERR(opendata
);
1110 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1111 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1113 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1114 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1115 delegation_type
= delegation
->type
;
1117 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1118 status
= nfs4_open_recover(opendata
, state
);
1119 nfs4_opendata_put(opendata
);
1123 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1125 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1126 struct nfs4_exception exception
= { };
1129 err
= _nfs4_do_open_reclaim(ctx
, state
);
1130 if (err
!= -NFS4ERR_DELAY
)
1132 nfs4_handle_exception(server
, err
, &exception
);
1133 } while (exception
.retry
);
1137 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1139 struct nfs_open_context
*ctx
;
1142 ctx
= nfs4_state_find_open_context(state
);
1144 return PTR_ERR(ctx
);
1145 ret
= nfs4_do_open_reclaim(ctx
, state
);
1146 put_nfs_open_context(ctx
);
1150 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1152 struct nfs4_opendata
*opendata
;
1155 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1156 if (IS_ERR(opendata
))
1157 return PTR_ERR(opendata
);
1158 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1159 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1160 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1161 ret
= nfs4_open_recover(opendata
, state
);
1162 nfs4_opendata_put(opendata
);
1166 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1168 struct nfs4_exception exception
= { };
1169 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1172 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1178 case -NFS4ERR_STALE_CLIENTID
:
1179 case -NFS4ERR_STALE_STATEID
:
1180 case -NFS4ERR_EXPIRED
:
1181 /* Don't recall a delegation if it was lost */
1182 nfs4_schedule_state_recovery(server
->nfs_client
);
1186 * The show must go on: exit, but mark the
1187 * stateid as needing recovery.
1189 case -NFS4ERR_ADMIN_REVOKED
:
1190 case -NFS4ERR_BAD_STATEID
:
1191 nfs4_state_mark_reclaim_nograce(server
->nfs_client
, state
);
1196 err
= nfs4_handle_exception(server
, err
, &exception
);
1197 } while (exception
.retry
);
1202 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1204 struct nfs4_opendata
*data
= calldata
;
1206 data
->rpc_status
= task
->tk_status
;
1207 if (RPC_ASSASSINATED(task
))
1209 if (data
->rpc_status
== 0) {
1210 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1211 sizeof(data
->o_res
.stateid
.data
));
1212 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1213 renew_lease(data
->o_res
.server
, data
->timestamp
);
1218 static void nfs4_open_confirm_release(void *calldata
)
1220 struct nfs4_opendata
*data
= calldata
;
1221 struct nfs4_state
*state
= NULL
;
1223 /* If this request hasn't been cancelled, do nothing */
1224 if (data
->cancelled
== 0)
1226 /* In case of error, no cleanup! */
1227 if (!data
->rpc_done
)
1229 state
= nfs4_opendata_to_nfs4_state(data
);
1231 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1233 nfs4_opendata_put(data
);
1236 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1237 .rpc_call_done
= nfs4_open_confirm_done
,
1238 .rpc_release
= nfs4_open_confirm_release
,
1242 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1244 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1246 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1247 struct rpc_task
*task
;
1248 struct rpc_message msg
= {
1249 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1250 .rpc_argp
= &data
->c_arg
,
1251 .rpc_resp
= &data
->c_res
,
1252 .rpc_cred
= data
->owner
->so_cred
,
1254 struct rpc_task_setup task_setup_data
= {
1255 .rpc_client
= server
->client
,
1256 .rpc_message
= &msg
,
1257 .callback_ops
= &nfs4_open_confirm_ops
,
1258 .callback_data
= data
,
1259 .workqueue
= nfsiod_workqueue
,
1260 .flags
= RPC_TASK_ASYNC
,
1264 kref_get(&data
->kref
);
1266 data
->rpc_status
= 0;
1267 data
->timestamp
= jiffies
;
1268 task
= rpc_run_task(&task_setup_data
);
1270 return PTR_ERR(task
);
1271 status
= nfs4_wait_for_completion_rpc_task(task
);
1273 data
->cancelled
= 1;
1276 status
= data
->rpc_status
;
1281 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1283 struct nfs4_opendata
*data
= calldata
;
1284 struct nfs4_state_owner
*sp
= data
->owner
;
1286 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1289 * Check if we still need to send an OPEN call, or if we can use
1290 * a delegation instead.
1292 if (data
->state
!= NULL
) {
1293 struct nfs_delegation
*delegation
;
1295 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1298 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1299 if (delegation
!= NULL
&&
1300 test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) == 0) {
1306 /* Update sequence id. */
1307 data
->o_arg
.id
= sp
->so_owner_id
.id
;
1308 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
1309 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1310 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1311 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1313 data
->timestamp
= jiffies
;
1314 if (nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
1315 &data
->o_arg
.seq_args
,
1316 &data
->o_res
.seq_res
, 1, task
))
1318 rpc_call_start(task
);
1321 task
->tk_action
= NULL
;
1325 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1327 struct nfs4_opendata
*data
= calldata
;
1329 data
->rpc_status
= task
->tk_status
;
1331 nfs4_sequence_done_free_slot(data
->o_arg
.server
, &data
->o_res
.seq_res
,
1334 if (RPC_ASSASSINATED(task
))
1336 if (task
->tk_status
== 0) {
1337 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1341 data
->rpc_status
= -ELOOP
;
1344 data
->rpc_status
= -EISDIR
;
1347 data
->rpc_status
= -ENOTDIR
;
1349 renew_lease(data
->o_res
.server
, data
->timestamp
);
1350 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1351 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1356 static void nfs4_open_release(void *calldata
)
1358 struct nfs4_opendata
*data
= calldata
;
1359 struct nfs4_state
*state
= NULL
;
1361 /* If this request hasn't been cancelled, do nothing */
1362 if (data
->cancelled
== 0)
1364 /* In case of error, no cleanup! */
1365 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1367 /* In case we need an open_confirm, no cleanup! */
1368 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1370 state
= nfs4_opendata_to_nfs4_state(data
);
1372 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1374 nfs4_opendata_put(data
);
1377 static const struct rpc_call_ops nfs4_open_ops
= {
1378 .rpc_call_prepare
= nfs4_open_prepare
,
1379 .rpc_call_done
= nfs4_open_done
,
1380 .rpc_release
= nfs4_open_release
,
1384 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1386 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1388 struct inode
*dir
= data
->dir
->d_inode
;
1389 struct nfs_server
*server
= NFS_SERVER(dir
);
1390 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1391 struct nfs_openres
*o_res
= &data
->o_res
;
1392 struct rpc_task
*task
;
1393 struct rpc_message msg
= {
1394 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1397 .rpc_cred
= data
->owner
->so_cred
,
1399 struct rpc_task_setup task_setup_data
= {
1400 .rpc_client
= server
->client
,
1401 .rpc_message
= &msg
,
1402 .callback_ops
= &nfs4_open_ops
,
1403 .callback_data
= data
,
1404 .workqueue
= nfsiod_workqueue
,
1405 .flags
= RPC_TASK_ASYNC
,
1409 kref_get(&data
->kref
);
1411 data
->rpc_status
= 0;
1412 data
->cancelled
= 0;
1413 task
= rpc_run_task(&task_setup_data
);
1415 return PTR_ERR(task
);
1416 status
= nfs4_wait_for_completion_rpc_task(task
);
1418 data
->cancelled
= 1;
1421 status
= data
->rpc_status
;
1423 if (status
!= 0 || !data
->rpc_done
)
1426 if (o_res
->fh
.size
== 0)
1427 _nfs4_proc_lookup(dir
, o_arg
->name
, &o_res
->fh
, o_res
->f_attr
);
1429 if (o_arg
->open_flags
& O_CREAT
) {
1430 update_changeattr(dir
, &o_res
->cinfo
);
1431 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1433 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1434 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1435 status
= _nfs4_proc_open_confirm(data
);
1439 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1440 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1444 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1446 struct nfs_client
*clp
= server
->nfs_client
;
1450 ret
= nfs4_wait_clnt_recover(clp
);
1453 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1454 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1456 nfs4_schedule_state_recovery(clp
);
1463 * reclaim state on the server after a network partition.
1464 * Assumes caller holds the appropriate lock
1466 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1468 struct nfs4_opendata
*opendata
;
1471 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1472 if (IS_ERR(opendata
))
1473 return PTR_ERR(opendata
);
1474 ret
= nfs4_open_recover(opendata
, state
);
1476 d_drop(ctx
->path
.dentry
);
1477 nfs4_opendata_put(opendata
);
1481 static inline int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1483 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1484 struct nfs4_exception exception
= { };
1488 err
= _nfs4_open_expired(ctx
, state
);
1489 if (err
!= -NFS4ERR_DELAY
)
1491 nfs4_handle_exception(server
, err
, &exception
);
1492 } while (exception
.retry
);
1496 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1498 struct nfs_open_context
*ctx
;
1501 ctx
= nfs4_state_find_open_context(state
);
1503 return PTR_ERR(ctx
);
1504 ret
= nfs4_do_open_expired(ctx
, state
);
1505 put_nfs_open_context(ctx
);
1510 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1511 * fields corresponding to attributes that were used to store the verifier.
1512 * Make sure we clobber those fields in the later setattr call
1514 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1516 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1517 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1518 sattr
->ia_valid
|= ATTR_ATIME
;
1520 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1521 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1522 sattr
->ia_valid
|= ATTR_MTIME
;
1526 * Returns a referenced nfs4_state
1528 static int _nfs4_do_open(struct inode
*dir
, struct path
*path
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
1530 struct nfs4_state_owner
*sp
;
1531 struct nfs4_state
*state
= NULL
;
1532 struct nfs_server
*server
= NFS_SERVER(dir
);
1533 struct nfs4_opendata
*opendata
;
1536 /* Protect against reboot recovery conflicts */
1538 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1539 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1542 status
= nfs4_recover_expired_lease(server
);
1544 goto err_put_state_owner
;
1545 if (path
->dentry
->d_inode
!= NULL
)
1546 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, fmode
);
1548 opendata
= nfs4_opendata_alloc(path
, sp
, fmode
, flags
, sattr
);
1549 if (opendata
== NULL
)
1550 goto err_put_state_owner
;
1552 if (path
->dentry
->d_inode
!= NULL
)
1553 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1555 status
= _nfs4_proc_open(opendata
);
1557 goto err_opendata_put
;
1559 if (opendata
->o_arg
.open_flags
& O_EXCL
)
1560 nfs4_exclusive_attrset(opendata
, sattr
);
1562 state
= nfs4_opendata_to_nfs4_state(opendata
);
1563 status
= PTR_ERR(state
);
1565 goto err_opendata_put
;
1566 nfs4_opendata_put(opendata
);
1567 nfs4_put_state_owner(sp
);
1571 nfs4_opendata_put(opendata
);
1572 err_put_state_owner
:
1573 nfs4_put_state_owner(sp
);
1580 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct path
*path
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1582 struct nfs4_exception exception
= { };
1583 struct nfs4_state
*res
;
1587 status
= _nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
, &res
);
1590 /* NOTE: BAD_SEQID means the server and client disagree about the
1591 * book-keeping w.r.t. state-changing operations
1592 * (OPEN/CLOSE/LOCK/LOCKU...)
1593 * It is actually a sign of a bug on the client or on the server.
1595 * If we receive a BAD_SEQID error in the particular case of
1596 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1597 * have unhashed the old state_owner for us, and that we can
1598 * therefore safely retry using a new one. We should still warn
1599 * the user though...
1601 if (status
== -NFS4ERR_BAD_SEQID
) {
1602 printk(KERN_WARNING
"NFS: v4 server %s "
1603 " returned a bad sequence-id error!\n",
1604 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1605 exception
.retry
= 1;
1609 * BAD_STATEID on OPEN means that the server cancelled our
1610 * state before it received the OPEN_CONFIRM.
1611 * Recover by retrying the request as per the discussion
1612 * on Page 181 of RFC3530.
1614 if (status
== -NFS4ERR_BAD_STATEID
) {
1615 exception
.retry
= 1;
1618 if (status
== -EAGAIN
) {
1619 /* We must have found a delegation */
1620 exception
.retry
= 1;
1623 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1624 status
, &exception
));
1625 } while (exception
.retry
);
1629 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1630 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1631 struct nfs4_state
*state
)
1633 struct nfs_server
*server
= NFS_SERVER(inode
);
1634 struct nfs_setattrargs arg
= {
1635 .fh
= NFS_FH(inode
),
1638 .bitmask
= server
->attr_bitmask
,
1640 struct nfs_setattrres res
= {
1644 struct rpc_message msg
= {
1645 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1650 unsigned long timestamp
= jiffies
;
1653 nfs_fattr_init(fattr
);
1655 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1656 /* Use that stateid */
1657 } else if (state
!= NULL
) {
1658 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1660 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1662 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
1663 if (status
== 0 && state
!= NULL
)
1664 renew_lease(server
, timestamp
);
1668 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1669 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1670 struct nfs4_state
*state
)
1672 struct nfs_server
*server
= NFS_SERVER(inode
);
1673 struct nfs4_exception exception
= { };
1676 err
= nfs4_handle_exception(server
,
1677 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1679 } while (exception
.retry
);
1683 struct nfs4_closedata
{
1685 struct inode
*inode
;
1686 struct nfs4_state
*state
;
1687 struct nfs_closeargs arg
;
1688 struct nfs_closeres res
;
1689 struct nfs_fattr fattr
;
1690 unsigned long timestamp
;
1693 static void nfs4_free_closedata(void *data
)
1695 struct nfs4_closedata
*calldata
= data
;
1696 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1698 nfs4_put_open_state(calldata
->state
);
1699 nfs_free_seqid(calldata
->arg
.seqid
);
1700 nfs4_put_state_owner(sp
);
1701 path_put(&calldata
->path
);
1705 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1707 struct nfs4_closedata
*calldata
= data
;
1708 struct nfs4_state
*state
= calldata
->state
;
1709 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1711 nfs4_sequence_done(server
, &calldata
->res
.seq_res
, task
->tk_status
);
1712 if (RPC_ASSASSINATED(task
))
1714 /* hmm. we are done with the inode, and in the process of freeing
1715 * the state_owner. we keep this around to process errors
1717 switch (task
->tk_status
) {
1719 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1720 renew_lease(server
, calldata
->timestamp
);
1722 case -NFS4ERR_STALE_STATEID
:
1723 case -NFS4ERR_OLD_STATEID
:
1724 case -NFS4ERR_BAD_STATEID
:
1725 case -NFS4ERR_EXPIRED
:
1726 if (calldata
->arg
.fmode
== 0)
1729 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
) {
1730 nfs4_restart_rpc(task
, server
->nfs_client
);
1734 nfs4_sequence_free_slot(server
->nfs_client
, &calldata
->res
.seq_res
);
1735 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1738 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1740 struct nfs4_closedata
*calldata
= data
;
1741 struct nfs4_state
*state
= calldata
->state
;
1742 int clear_rd
, clear_wr
, clear_rdwr
;
1744 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1747 clear_rd
= clear_wr
= clear_rdwr
= 0;
1748 spin_lock(&state
->owner
->so_lock
);
1749 /* Calculate the change in open mode */
1750 if (state
->n_rdwr
== 0) {
1751 if (state
->n_rdonly
== 0) {
1752 clear_rd
|= test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1753 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1755 if (state
->n_wronly
== 0) {
1756 clear_wr
|= test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1757 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1760 spin_unlock(&state
->owner
->so_lock
);
1761 if (!clear_rd
&& !clear_wr
&& !clear_rdwr
) {
1762 /* Note: exit _without_ calling nfs4_close_done */
1763 task
->tk_action
= NULL
;
1766 nfs_fattr_init(calldata
->res
.fattr
);
1767 if (test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0) {
1768 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1769 calldata
->arg
.fmode
= FMODE_READ
;
1770 } else if (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0) {
1771 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1772 calldata
->arg
.fmode
= FMODE_WRITE
;
1774 calldata
->timestamp
= jiffies
;
1775 if (nfs4_setup_sequence((NFS_SERVER(calldata
->inode
))->nfs_client
,
1776 &calldata
->arg
.seq_args
, &calldata
->res
.seq_res
,
1779 rpc_call_start(task
);
1782 static const struct rpc_call_ops nfs4_close_ops
= {
1783 .rpc_call_prepare
= nfs4_close_prepare
,
1784 .rpc_call_done
= nfs4_close_done
,
1785 .rpc_release
= nfs4_free_closedata
,
1789 * It is possible for data to be read/written from a mem-mapped file
1790 * after the sys_close call (which hits the vfs layer as a flush).
1791 * This means that we can't safely call nfsv4 close on a file until
1792 * the inode is cleared. This in turn means that we are not good
1793 * NFSv4 citizens - we do not indicate to the server to update the file's
1794 * share state even when we are done with one of the three share
1795 * stateid's in the inode.
1797 * NOTE: Caller must be holding the sp->so_owner semaphore!
1799 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, int wait
)
1801 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1802 struct nfs4_closedata
*calldata
;
1803 struct nfs4_state_owner
*sp
= state
->owner
;
1804 struct rpc_task
*task
;
1805 struct rpc_message msg
= {
1806 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1807 .rpc_cred
= state
->owner
->so_cred
,
1809 struct rpc_task_setup task_setup_data
= {
1810 .rpc_client
= server
->client
,
1811 .rpc_message
= &msg
,
1812 .callback_ops
= &nfs4_close_ops
,
1813 .workqueue
= nfsiod_workqueue
,
1814 .flags
= RPC_TASK_ASYNC
,
1816 int status
= -ENOMEM
;
1818 calldata
= kzalloc(sizeof(*calldata
), GFP_KERNEL
);
1819 if (calldata
== NULL
)
1821 calldata
->inode
= state
->inode
;
1822 calldata
->state
= state
;
1823 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1824 calldata
->arg
.stateid
= &state
->open_stateid
;
1825 if (nfs4_has_session(server
->nfs_client
))
1826 memset(calldata
->arg
.stateid
->data
, 0, 4); /* clear seqid */
1827 /* Serialization for the sequence id */
1828 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1829 if (calldata
->arg
.seqid
== NULL
)
1830 goto out_free_calldata
;
1831 calldata
->arg
.fmode
= 0;
1832 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
1833 calldata
->res
.fattr
= &calldata
->fattr
;
1834 calldata
->res
.seqid
= calldata
->arg
.seqid
;
1835 calldata
->res
.server
= server
;
1836 calldata
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
1837 calldata
->path
.mnt
= mntget(path
->mnt
);
1838 calldata
->path
.dentry
= dget(path
->dentry
);
1840 msg
.rpc_argp
= &calldata
->arg
,
1841 msg
.rpc_resp
= &calldata
->res
,
1842 task_setup_data
.callback_data
= calldata
;
1843 task
= rpc_run_task(&task_setup_data
);
1845 return PTR_ERR(task
);
1848 status
= rpc_wait_for_completion_task(task
);
1854 nfs4_put_open_state(state
);
1855 nfs4_put_state_owner(sp
);
1859 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
, fmode_t fmode
)
1864 /* If the open_intent is for execute, we have an extra check to make */
1865 if (fmode
& FMODE_EXEC
) {
1866 ret
= nfs_may_open(state
->inode
,
1867 state
->owner
->so_cred
,
1868 nd
->intent
.open
.flags
);
1872 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1873 if (!IS_ERR(filp
)) {
1874 struct nfs_open_context
*ctx
;
1875 ctx
= nfs_file_open_context(filp
);
1879 ret
= PTR_ERR(filp
);
1881 nfs4_close_sync(path
, state
, fmode
& (FMODE_READ
|FMODE_WRITE
));
1886 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1888 struct path path
= {
1889 .mnt
= nd
->path
.mnt
,
1892 struct dentry
*parent
;
1894 struct rpc_cred
*cred
;
1895 struct nfs4_state
*state
;
1897 fmode_t fmode
= nd
->intent
.open
.flags
& (FMODE_READ
| FMODE_WRITE
| FMODE_EXEC
);
1899 if (nd
->flags
& LOOKUP_CREATE
) {
1900 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1901 attr
.ia_valid
= ATTR_MODE
;
1902 if (!IS_POSIXACL(dir
))
1903 attr
.ia_mode
&= ~current_umask();
1906 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1909 cred
= rpc_lookup_cred();
1911 return (struct dentry
*)cred
;
1912 parent
= dentry
->d_parent
;
1913 /* Protect against concurrent sillydeletes */
1914 nfs_block_sillyrename(parent
);
1915 state
= nfs4_do_open(dir
, &path
, fmode
, nd
->intent
.open
.flags
, &attr
, cred
);
1917 if (IS_ERR(state
)) {
1918 if (PTR_ERR(state
) == -ENOENT
) {
1919 d_add(dentry
, NULL
);
1920 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1922 nfs_unblock_sillyrename(parent
);
1923 return (struct dentry
*)state
;
1925 res
= d_add_unique(dentry
, igrab(state
->inode
));
1928 nfs_set_verifier(path
.dentry
, nfs_save_change_attribute(dir
));
1929 nfs_unblock_sillyrename(parent
);
1930 nfs4_intent_set_file(nd
, &path
, state
, fmode
);
1935 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1937 struct path path
= {
1938 .mnt
= nd
->path
.mnt
,
1941 struct rpc_cred
*cred
;
1942 struct nfs4_state
*state
;
1943 fmode_t fmode
= openflags
& (FMODE_READ
| FMODE_WRITE
);
1945 cred
= rpc_lookup_cred();
1947 return PTR_ERR(cred
);
1948 state
= nfs4_do_open(dir
, &path
, fmode
, openflags
, NULL
, cred
);
1950 if (IS_ERR(state
)) {
1951 switch (PTR_ERR(state
)) {
1957 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1963 if (state
->inode
== dentry
->d_inode
) {
1964 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1965 nfs4_intent_set_file(nd
, &path
, state
, fmode
);
1968 nfs4_close_sync(&path
, state
, fmode
);
1974 void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
1976 if (ctx
->state
== NULL
)
1979 nfs4_close_sync(&ctx
->path
, ctx
->state
, ctx
->mode
);
1981 nfs4_close_state(&ctx
->path
, ctx
->state
, ctx
->mode
);
1984 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1986 struct nfs4_server_caps_arg args
= {
1989 struct nfs4_server_caps_res res
= {};
1990 struct rpc_message msg
= {
1991 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1997 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
1999 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2000 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2001 server
->caps
|= NFS_CAP_ACLS
;
2002 if (res
.has_links
!= 0)
2003 server
->caps
|= NFS_CAP_HARDLINKS
;
2004 if (res
.has_symlinks
!= 0)
2005 server
->caps
|= NFS_CAP_SYMLINKS
;
2006 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2007 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2008 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2009 server
->acl_bitmask
= res
.acl_bitmask
;
2015 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2017 struct nfs4_exception exception
= { };
2020 err
= nfs4_handle_exception(server
,
2021 _nfs4_server_capabilities(server
, fhandle
),
2023 } while (exception
.retry
);
2027 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2028 struct nfs_fsinfo
*info
)
2030 struct nfs4_lookup_root_arg args
= {
2031 .bitmask
= nfs4_fattr_bitmap
,
2033 struct nfs4_lookup_res res
= {
2035 .fattr
= info
->fattr
,
2038 struct rpc_message msg
= {
2039 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2045 nfs_fattr_init(info
->fattr
);
2046 status
= nfs4_recover_expired_lease(server
);
2048 status
= nfs4_check_client_ready(server
->nfs_client
);
2050 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2054 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2055 struct nfs_fsinfo
*info
)
2057 struct nfs4_exception exception
= { };
2060 err
= nfs4_handle_exception(server
,
2061 _nfs4_lookup_root(server
, fhandle
, info
),
2063 } while (exception
.retry
);
2068 * get the file handle for the "/" directory on the server
2070 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2071 struct nfs_fsinfo
*info
)
2075 status
= nfs4_lookup_root(server
, fhandle
, info
);
2077 status
= nfs4_server_capabilities(server
, fhandle
);
2079 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2080 return nfs4_map_errors(status
);
2084 * Get locations and (maybe) other attributes of a referral.
2085 * Note that we'll actually follow the referral later when
2086 * we detect fsid mismatch in inode revalidation
2088 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2090 int status
= -ENOMEM
;
2091 struct page
*page
= NULL
;
2092 struct nfs4_fs_locations
*locations
= NULL
;
2094 page
= alloc_page(GFP_KERNEL
);
2097 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2098 if (locations
== NULL
)
2101 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2104 /* Make sure server returned a different fsid for the referral */
2105 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2106 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__
, name
->name
);
2111 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2112 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
2114 fattr
->mode
= S_IFDIR
;
2115 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2124 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2126 struct nfs4_getattr_arg args
= {
2128 .bitmask
= server
->attr_bitmask
,
2130 struct nfs4_getattr_res res
= {
2134 struct rpc_message msg
= {
2135 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2140 nfs_fattr_init(fattr
);
2141 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2144 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2146 struct nfs4_exception exception
= { };
2149 err
= nfs4_handle_exception(server
,
2150 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2152 } while (exception
.retry
);
2157 * The file is not closed if it is opened due to the a request to change
2158 * the size of the file. The open call will not be needed once the
2159 * VFS layer lookup-intents are implemented.
2161 * Close is called when the inode is destroyed.
2162 * If we haven't opened the file for O_WRONLY, we
2163 * need to in the size_change case to obtain a stateid.
2166 * Because OPEN is always done by name in nfsv4, it is
2167 * possible that we opened a different file by the same
2168 * name. We can recognize this race condition, but we
2169 * can't do anything about it besides returning an error.
2171 * This will be fixed with VFS changes (lookup-intent).
2174 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2175 struct iattr
*sattr
)
2177 struct inode
*inode
= dentry
->d_inode
;
2178 struct rpc_cred
*cred
= NULL
;
2179 struct nfs4_state
*state
= NULL
;
2182 nfs_fattr_init(fattr
);
2184 /* Search for an existing open(O_WRITE) file */
2185 if (sattr
->ia_valid
& ATTR_FILE
) {
2186 struct nfs_open_context
*ctx
;
2188 ctx
= nfs_file_open_context(sattr
->ia_file
);
2195 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2197 nfs_setattr_update_inode(inode
, sattr
);
2201 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
2202 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2203 struct nfs_fattr
*fattr
)
2206 struct nfs4_lookup_arg args
= {
2207 .bitmask
= server
->attr_bitmask
,
2211 struct nfs4_lookup_res res
= {
2216 struct rpc_message msg
= {
2217 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2222 nfs_fattr_init(fattr
);
2224 dprintk("NFS call lookupfh %s\n", name
->name
);
2225 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2226 dprintk("NFS reply lookupfh: %d\n", status
);
2230 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
2231 struct qstr
*name
, struct nfs_fh
*fhandle
,
2232 struct nfs_fattr
*fattr
)
2234 struct nfs4_exception exception
= { };
2237 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
2239 if (err
== -NFS4ERR_MOVED
) {
2243 err
= nfs4_handle_exception(server
, err
, &exception
);
2244 } while (exception
.retry
);
2248 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
2249 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2253 dprintk("NFS call lookup %s\n", name
->name
);
2254 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
2255 if (status
== -NFS4ERR_MOVED
)
2256 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2257 dprintk("NFS reply lookup: %d\n", status
);
2261 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2263 struct nfs4_exception exception
= { };
2266 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2267 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
2269 } while (exception
.retry
);
2273 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2275 struct nfs_server
*server
= NFS_SERVER(inode
);
2276 struct nfs_fattr fattr
;
2277 struct nfs4_accessargs args
= {
2278 .fh
= NFS_FH(inode
),
2279 .bitmask
= server
->attr_bitmask
,
2281 struct nfs4_accessres res
= {
2285 struct rpc_message msg
= {
2286 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2289 .rpc_cred
= entry
->cred
,
2291 int mode
= entry
->mask
;
2295 * Determine which access bits we want to ask for...
2297 if (mode
& MAY_READ
)
2298 args
.access
|= NFS4_ACCESS_READ
;
2299 if (S_ISDIR(inode
->i_mode
)) {
2300 if (mode
& MAY_WRITE
)
2301 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2302 if (mode
& MAY_EXEC
)
2303 args
.access
|= NFS4_ACCESS_LOOKUP
;
2305 if (mode
& MAY_WRITE
)
2306 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2307 if (mode
& MAY_EXEC
)
2308 args
.access
|= NFS4_ACCESS_EXECUTE
;
2310 nfs_fattr_init(&fattr
);
2311 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2314 if (res
.access
& NFS4_ACCESS_READ
)
2315 entry
->mask
|= MAY_READ
;
2316 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2317 entry
->mask
|= MAY_WRITE
;
2318 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2319 entry
->mask
|= MAY_EXEC
;
2320 nfs_refresh_inode(inode
, &fattr
);
2325 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2327 struct nfs4_exception exception
= { };
2330 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2331 _nfs4_proc_access(inode
, entry
),
2333 } while (exception
.retry
);
2338 * TODO: For the time being, we don't try to get any attributes
2339 * along with any of the zero-copy operations READ, READDIR,
2342 * In the case of the first three, we want to put the GETATTR
2343 * after the read-type operation -- this is because it is hard
2344 * to predict the length of a GETATTR response in v4, and thus
2345 * align the READ data correctly. This means that the GETATTR
2346 * may end up partially falling into the page cache, and we should
2347 * shift it into the 'tail' of the xdr_buf before processing.
2348 * To do this efficiently, we need to know the total length
2349 * of data received, which doesn't seem to be available outside
2352 * In the case of WRITE, we also want to put the GETATTR after
2353 * the operation -- in this case because we want to make sure
2354 * we get the post-operation mtime and size. This means that
2355 * we can't use xdr_encode_pages() as written: we need a variant
2356 * of it which would leave room in the 'tail' iovec.
2358 * Both of these changes to the XDR layer would in fact be quite
2359 * minor, but I decided to leave them for a subsequent patch.
2361 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2362 unsigned int pgbase
, unsigned int pglen
)
2364 struct nfs4_readlink args
= {
2365 .fh
= NFS_FH(inode
),
2370 struct nfs4_readlink_res res
;
2371 struct rpc_message msg
= {
2372 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2377 return nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
2380 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2381 unsigned int pgbase
, unsigned int pglen
)
2383 struct nfs4_exception exception
= { };
2386 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2387 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2389 } while (exception
.retry
);
2395 * We will need to arrange for the VFS layer to provide an atomic open.
2396 * Until then, this create/open method is prone to inefficiency and race
2397 * conditions due to the lookup, create, and open VFS calls from sys_open()
2398 * placed on the wire.
2400 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2401 * The file will be opened again in the subsequent VFS open call
2402 * (nfs4_proc_file_open).
2404 * The open for read will just hang around to be used by any process that
2405 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2409 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2410 int flags
, struct nameidata
*nd
)
2412 struct path path
= {
2413 .mnt
= nd
->path
.mnt
,
2416 struct nfs4_state
*state
;
2417 struct rpc_cred
*cred
;
2418 fmode_t fmode
= flags
& (FMODE_READ
| FMODE_WRITE
);
2421 cred
= rpc_lookup_cred();
2423 status
= PTR_ERR(cred
);
2426 state
= nfs4_do_open(dir
, &path
, fmode
, flags
, sattr
, cred
);
2428 if (IS_ERR(state
)) {
2429 status
= PTR_ERR(state
);
2432 d_add(dentry
, igrab(state
->inode
));
2433 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2434 if (flags
& O_EXCL
) {
2435 struct nfs_fattr fattr
;
2436 status
= nfs4_do_setattr(state
->inode
, cred
, &fattr
, sattr
, state
);
2438 nfs_setattr_update_inode(state
->inode
, sattr
);
2439 nfs_post_op_update_inode(state
->inode
, &fattr
);
2441 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
2442 status
= nfs4_intent_set_file(nd
, &path
, state
, fmode
);
2444 nfs4_close_sync(&path
, state
, fmode
);
2451 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2453 struct nfs_server
*server
= NFS_SERVER(dir
);
2454 struct nfs_removeargs args
= {
2456 .name
.len
= name
->len
,
2457 .name
.name
= name
->name
,
2458 .bitmask
= server
->attr_bitmask
,
2460 struct nfs_removeres res
= {
2463 struct rpc_message msg
= {
2464 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2470 nfs_fattr_init(&res
.dir_attr
);
2471 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 1);
2473 update_changeattr(dir
, &res
.cinfo
);
2474 nfs_post_op_update_inode(dir
, &res
.dir_attr
);
2479 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2481 struct nfs4_exception exception
= { };
2484 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2485 _nfs4_proc_remove(dir
, name
),
2487 } while (exception
.retry
);
2491 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2493 struct nfs_server
*server
= NFS_SERVER(dir
);
2494 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2495 struct nfs_removeres
*res
= msg
->rpc_resp
;
2497 args
->bitmask
= server
->cache_consistency_bitmask
;
2498 res
->server
= server
;
2499 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2502 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2504 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2506 nfs4_sequence_done(res
->server
, &res
->seq_res
, task
->tk_status
);
2507 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2509 nfs4_sequence_free_slot(res
->server
->nfs_client
, &res
->seq_res
);
2510 update_changeattr(dir
, &res
->cinfo
);
2511 nfs_post_op_update_inode(dir
, &res
->dir_attr
);
2515 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2516 struct inode
*new_dir
, struct qstr
*new_name
)
2518 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2519 struct nfs4_rename_arg arg
= {
2520 .old_dir
= NFS_FH(old_dir
),
2521 .new_dir
= NFS_FH(new_dir
),
2522 .old_name
= old_name
,
2523 .new_name
= new_name
,
2524 .bitmask
= server
->attr_bitmask
,
2526 struct nfs_fattr old_fattr
, new_fattr
;
2527 struct nfs4_rename_res res
= {
2529 .old_fattr
= &old_fattr
,
2530 .new_fattr
= &new_fattr
,
2532 struct rpc_message msg
= {
2533 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2539 nfs_fattr_init(res
.old_fattr
);
2540 nfs_fattr_init(res
.new_fattr
);
2541 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2544 update_changeattr(old_dir
, &res
.old_cinfo
);
2545 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2546 update_changeattr(new_dir
, &res
.new_cinfo
);
2547 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2552 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2553 struct inode
*new_dir
, struct qstr
*new_name
)
2555 struct nfs4_exception exception
= { };
2558 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2559 _nfs4_proc_rename(old_dir
, old_name
,
2562 } while (exception
.retry
);
2566 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2568 struct nfs_server
*server
= NFS_SERVER(inode
);
2569 struct nfs4_link_arg arg
= {
2570 .fh
= NFS_FH(inode
),
2571 .dir_fh
= NFS_FH(dir
),
2573 .bitmask
= server
->attr_bitmask
,
2575 struct nfs_fattr fattr
, dir_attr
;
2576 struct nfs4_link_res res
= {
2579 .dir_attr
= &dir_attr
,
2581 struct rpc_message msg
= {
2582 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2588 nfs_fattr_init(res
.fattr
);
2589 nfs_fattr_init(res
.dir_attr
);
2590 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2592 update_changeattr(dir
, &res
.cinfo
);
2593 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2594 nfs_post_op_update_inode(inode
, res
.fattr
);
2600 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2602 struct nfs4_exception exception
= { };
2605 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2606 _nfs4_proc_link(inode
, dir
, name
),
2608 } while (exception
.retry
);
2612 struct nfs4_createdata
{
2613 struct rpc_message msg
;
2614 struct nfs4_create_arg arg
;
2615 struct nfs4_create_res res
;
2617 struct nfs_fattr fattr
;
2618 struct nfs_fattr dir_fattr
;
2621 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2622 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2624 struct nfs4_createdata
*data
;
2626 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2628 struct nfs_server
*server
= NFS_SERVER(dir
);
2630 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2631 data
->msg
.rpc_argp
= &data
->arg
;
2632 data
->msg
.rpc_resp
= &data
->res
;
2633 data
->arg
.dir_fh
= NFS_FH(dir
);
2634 data
->arg
.server
= server
;
2635 data
->arg
.name
= name
;
2636 data
->arg
.attrs
= sattr
;
2637 data
->arg
.ftype
= ftype
;
2638 data
->arg
.bitmask
= server
->attr_bitmask
;
2639 data
->res
.server
= server
;
2640 data
->res
.fh
= &data
->fh
;
2641 data
->res
.fattr
= &data
->fattr
;
2642 data
->res
.dir_fattr
= &data
->dir_fattr
;
2643 nfs_fattr_init(data
->res
.fattr
);
2644 nfs_fattr_init(data
->res
.dir_fattr
);
2649 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2651 int status
= nfs4_call_sync(NFS_SERVER(dir
), &data
->msg
,
2652 &data
->arg
, &data
->res
, 1);
2654 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2655 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2656 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2661 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2666 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2667 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2669 struct nfs4_createdata
*data
;
2670 int status
= -ENAMETOOLONG
;
2672 if (len
> NFS4_MAXPATHLEN
)
2676 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2680 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2681 data
->arg
.u
.symlink
.pages
= &page
;
2682 data
->arg
.u
.symlink
.len
= len
;
2684 status
= nfs4_do_create(dir
, dentry
, data
);
2686 nfs4_free_createdata(data
);
2691 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2692 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2694 struct nfs4_exception exception
= { };
2697 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2698 _nfs4_proc_symlink(dir
, dentry
, page
,
2701 } while (exception
.retry
);
2705 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2706 struct iattr
*sattr
)
2708 struct nfs4_createdata
*data
;
2709 int status
= -ENOMEM
;
2711 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2715 status
= nfs4_do_create(dir
, dentry
, data
);
2717 nfs4_free_createdata(data
);
2722 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2723 struct iattr
*sattr
)
2725 struct nfs4_exception exception
= { };
2728 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2729 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2731 } while (exception
.retry
);
2735 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2736 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2738 struct inode
*dir
= dentry
->d_inode
;
2739 struct nfs4_readdir_arg args
= {
2744 .bitmask
= NFS_SERVER(dentry
->d_inode
)->cache_consistency_bitmask
,
2746 struct nfs4_readdir_res res
;
2747 struct rpc_message msg
= {
2748 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2755 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
2756 dentry
->d_parent
->d_name
.name
,
2757 dentry
->d_name
.name
,
2758 (unsigned long long)cookie
);
2759 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2760 res
.pgbase
= args
.pgbase
;
2761 status
= nfs4_call_sync(NFS_SERVER(dir
), &msg
, &args
, &res
, 0);
2763 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2765 nfs_invalidate_atime(dir
);
2767 dprintk("%s: returns %d\n", __func__
, status
);
2771 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2772 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2774 struct nfs4_exception exception
= { };
2777 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2778 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2781 } while (exception
.retry
);
2785 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2786 struct iattr
*sattr
, dev_t rdev
)
2788 struct nfs4_createdata
*data
;
2789 int mode
= sattr
->ia_mode
;
2790 int status
= -ENOMEM
;
2792 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2793 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2795 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
2800 data
->arg
.ftype
= NF4FIFO
;
2801 else if (S_ISBLK(mode
)) {
2802 data
->arg
.ftype
= NF4BLK
;
2803 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2804 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2806 else if (S_ISCHR(mode
)) {
2807 data
->arg
.ftype
= NF4CHR
;
2808 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2809 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2812 status
= nfs4_do_create(dir
, dentry
, data
);
2814 nfs4_free_createdata(data
);
2819 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2820 struct iattr
*sattr
, dev_t rdev
)
2822 struct nfs4_exception exception
= { };
2825 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2826 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2828 } while (exception
.retry
);
2832 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2833 struct nfs_fsstat
*fsstat
)
2835 struct nfs4_statfs_arg args
= {
2837 .bitmask
= server
->attr_bitmask
,
2839 struct nfs4_statfs_res res
= {
2842 struct rpc_message msg
= {
2843 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2848 nfs_fattr_init(fsstat
->fattr
);
2849 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2852 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2854 struct nfs4_exception exception
= { };
2857 err
= nfs4_handle_exception(server
,
2858 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2860 } while (exception
.retry
);
2864 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2865 struct nfs_fsinfo
*fsinfo
)
2867 struct nfs4_fsinfo_arg args
= {
2869 .bitmask
= server
->attr_bitmask
,
2871 struct nfs4_fsinfo_res res
= {
2874 struct rpc_message msg
= {
2875 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2880 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2883 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2885 struct nfs4_exception exception
= { };
2889 err
= nfs4_handle_exception(server
,
2890 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2892 } while (exception
.retry
);
2896 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2898 nfs_fattr_init(fsinfo
->fattr
);
2899 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2902 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2903 struct nfs_pathconf
*pathconf
)
2905 struct nfs4_pathconf_arg args
= {
2907 .bitmask
= server
->attr_bitmask
,
2909 struct nfs4_pathconf_res res
= {
2910 .pathconf
= pathconf
,
2912 struct rpc_message msg
= {
2913 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2918 /* None of the pathconf attributes are mandatory to implement */
2919 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2920 memset(pathconf
, 0, sizeof(*pathconf
));
2924 nfs_fattr_init(pathconf
->fattr
);
2925 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2928 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2929 struct nfs_pathconf
*pathconf
)
2931 struct nfs4_exception exception
= { };
2935 err
= nfs4_handle_exception(server
,
2936 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2938 } while (exception
.retry
);
2942 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2944 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2946 dprintk("--> %s\n", __func__
);
2948 /* nfs4_sequence_free_slot called in the read rpc_call_done */
2949 nfs4_sequence_done(server
, &data
->res
.seq_res
, task
->tk_status
);
2951 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
2952 nfs4_restart_rpc(task
, server
->nfs_client
);
2956 nfs_invalidate_atime(data
->inode
);
2957 if (task
->tk_status
> 0)
2958 renew_lease(server
, data
->timestamp
);
2962 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
2964 data
->timestamp
= jiffies
;
2965 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
2968 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2970 struct inode
*inode
= data
->inode
;
2972 /* slot is freed in nfs_writeback_done */
2973 nfs4_sequence_done(NFS_SERVER(inode
), &data
->res
.seq_res
,
2976 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
2977 nfs4_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
2980 if (task
->tk_status
>= 0) {
2981 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2982 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
2987 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
2989 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2991 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
2992 data
->res
.server
= server
;
2993 data
->timestamp
= jiffies
;
2995 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
2998 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3000 struct inode
*inode
= data
->inode
;
3002 nfs4_sequence_done(NFS_SERVER(inode
), &data
->res
.seq_res
,
3004 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3005 nfs4_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3008 nfs4_sequence_free_slot(NFS_SERVER(inode
)->nfs_client
,
3009 &data
->res
.seq_res
);
3010 nfs_refresh_inode(inode
, data
->res
.fattr
);
3014 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3016 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3018 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3019 data
->res
.server
= server
;
3020 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3024 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3025 * standalone procedure for queueing an asynchronous RENEW.
3027 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
3029 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
3030 unsigned long timestamp
= (unsigned long)data
;
3032 if (task
->tk_status
< 0) {
3033 /* Unless we're shutting down, schedule state recovery! */
3034 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) != 0)
3035 nfs4_schedule_state_recovery(clp
);
3038 spin_lock(&clp
->cl_lock
);
3039 if (time_before(clp
->cl_last_renewal
,timestamp
))
3040 clp
->cl_last_renewal
= timestamp
;
3041 spin_unlock(&clp
->cl_lock
);
3042 dprintk("%s calling put_rpccred on rpc_cred %p\n", __func__
,
3043 task
->tk_msg
.rpc_cred
);
3044 put_rpccred(task
->tk_msg
.rpc_cred
);
3047 static const struct rpc_call_ops nfs4_renew_ops
= {
3048 .rpc_call_done
= nfs4_renew_done
,
3051 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3053 struct rpc_message msg
= {
3054 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3059 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3060 &nfs4_renew_ops
, (void *)jiffies
);
3063 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3065 struct rpc_message msg
= {
3066 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3070 unsigned long now
= jiffies
;
3073 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3076 spin_lock(&clp
->cl_lock
);
3077 if (time_before(clp
->cl_last_renewal
,now
))
3078 clp
->cl_last_renewal
= now
;
3079 spin_unlock(&clp
->cl_lock
);
3083 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3085 return (server
->caps
& NFS_CAP_ACLS
)
3086 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3087 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3090 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3091 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3094 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3096 static void buf_to_pages(const void *buf
, size_t buflen
,
3097 struct page
**pages
, unsigned int *pgbase
)
3099 const void *p
= buf
;
3101 *pgbase
= offset_in_page(buf
);
3103 while (p
< buf
+ buflen
) {
3104 *(pages
++) = virt_to_page(p
);
3105 p
+= PAGE_CACHE_SIZE
;
3109 struct nfs4_cached_acl
{
3115 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3117 struct nfs_inode
*nfsi
= NFS_I(inode
);
3119 spin_lock(&inode
->i_lock
);
3120 kfree(nfsi
->nfs4_acl
);
3121 nfsi
->nfs4_acl
= acl
;
3122 spin_unlock(&inode
->i_lock
);
3125 static void nfs4_zap_acl_attr(struct inode
*inode
)
3127 nfs4_set_cached_acl(inode
, NULL
);
3130 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3132 struct nfs_inode
*nfsi
= NFS_I(inode
);
3133 struct nfs4_cached_acl
*acl
;
3136 spin_lock(&inode
->i_lock
);
3137 acl
= nfsi
->nfs4_acl
;
3140 if (buf
== NULL
) /* user is just asking for length */
3142 if (acl
->cached
== 0)
3144 ret
= -ERANGE
; /* see getxattr(2) man page */
3145 if (acl
->len
> buflen
)
3147 memcpy(buf
, acl
->data
, acl
->len
);
3151 spin_unlock(&inode
->i_lock
);
3155 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3157 struct nfs4_cached_acl
*acl
;
3159 if (buf
&& acl_len
<= PAGE_SIZE
) {
3160 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3164 memcpy(acl
->data
, buf
, acl_len
);
3166 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3173 nfs4_set_cached_acl(inode
, acl
);
3176 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3178 struct page
*pages
[NFS4ACL_MAXPAGES
];
3179 struct nfs_getaclargs args
= {
3180 .fh
= NFS_FH(inode
),
3184 struct nfs_getaclres res
= {
3188 struct rpc_message msg
= {
3189 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3193 struct page
*localpage
= NULL
;
3196 if (buflen
< PAGE_SIZE
) {
3197 /* As long as we're doing a round trip to the server anyway,
3198 * let's be prepared for a page of acl data. */
3199 localpage
= alloc_page(GFP_KERNEL
);
3200 resp_buf
= page_address(localpage
);
3201 if (localpage
== NULL
)
3203 args
.acl_pages
[0] = localpage
;
3204 args
.acl_pgbase
= 0;
3205 args
.acl_len
= PAGE_SIZE
;
3208 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
3210 ret
= nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
3213 if (res
.acl_len
> args
.acl_len
)
3214 nfs4_write_cached_acl(inode
, NULL
, res
.acl_len
);
3216 nfs4_write_cached_acl(inode
, resp_buf
, res
.acl_len
);
3219 if (res
.acl_len
> buflen
)
3222 memcpy(buf
, resp_buf
, res
.acl_len
);
3227 __free_page(localpage
);
3231 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3233 struct nfs4_exception exception
= { };
3236 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3239 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3240 } while (exception
.retry
);
3244 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3246 struct nfs_server
*server
= NFS_SERVER(inode
);
3249 if (!nfs4_server_supports_acls(server
))
3251 ret
= nfs_revalidate_inode(server
, inode
);
3254 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3257 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3260 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3262 struct nfs_server
*server
= NFS_SERVER(inode
);
3263 struct page
*pages
[NFS4ACL_MAXPAGES
];
3264 struct nfs_setaclargs arg
= {
3265 .fh
= NFS_FH(inode
),
3269 struct nfs_setaclres res
;
3270 struct rpc_message msg
= {
3271 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3277 if (!nfs4_server_supports_acls(server
))
3279 nfs_inode_return_delegation(inode
);
3280 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3281 ret
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3282 nfs_access_zap_cache(inode
);
3283 nfs_zap_acl_cache(inode
);
3287 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3289 struct nfs4_exception exception
= { };
3292 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3293 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3295 } while (exception
.retry
);
3300 _nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs_client
*clp
, struct nfs4_state
*state
)
3302 if (!clp
|| task
->tk_status
>= 0)
3304 switch(task
->tk_status
) {
3305 case -NFS4ERR_ADMIN_REVOKED
:
3306 case -NFS4ERR_BAD_STATEID
:
3307 case -NFS4ERR_OPENMODE
:
3310 nfs4_state_mark_reclaim_nograce(clp
, state
);
3311 case -NFS4ERR_STALE_CLIENTID
:
3312 case -NFS4ERR_STALE_STATEID
:
3313 case -NFS4ERR_EXPIRED
:
3314 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3315 nfs4_schedule_state_recovery(clp
);
3316 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3317 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3318 task
->tk_status
= 0;
3320 #if defined(CONFIG_NFS_V4_1)
3321 case -NFS4ERR_BADSESSION
:
3322 case -NFS4ERR_BADSLOT
:
3323 case -NFS4ERR_BAD_HIGH_SLOT
:
3324 case -NFS4ERR_DEADSESSION
:
3325 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3326 case -NFS4ERR_SEQ_FALSE_RETRY
:
3327 case -NFS4ERR_SEQ_MISORDERED
:
3328 dprintk("%s ERROR %d, Reset session\n", __func__
,
3330 set_bit(NFS4CLNT_SESSION_SETUP
, &clp
->cl_state
);
3331 task
->tk_status
= 0;
3333 #endif /* CONFIG_NFS_V4_1 */
3334 case -NFS4ERR_DELAY
:
3336 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3337 case -NFS4ERR_GRACE
:
3338 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3339 task
->tk_status
= 0;
3341 case -NFS4ERR_OLD_STATEID
:
3342 task
->tk_status
= 0;
3345 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3350 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3352 return _nfs4_async_handle_error(task
, server
, server
->nfs_client
, state
);
3355 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
3357 nfs4_verifier sc_verifier
;
3358 struct nfs4_setclientid setclientid
= {
3359 .sc_verifier
= &sc_verifier
,
3362 struct rpc_message msg
= {
3363 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3364 .rpc_argp
= &setclientid
,
3372 p
= (__be32
*)sc_verifier
.data
;
3373 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3374 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3377 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3378 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3380 rpc_peeraddr2str(clp
->cl_rpcclient
,
3382 rpc_peeraddr2str(clp
->cl_rpcclient
,
3384 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3385 clp
->cl_id_uniquifier
);
3386 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3387 sizeof(setclientid
.sc_netid
),
3388 rpc_peeraddr2str(clp
->cl_rpcclient
,
3389 RPC_DISPLAY_NETID
));
3390 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3391 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3392 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3394 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3395 if (status
!= -NFS4ERR_CLID_INUSE
)
3400 ssleep(clp
->cl_lease_time
+ 1);
3402 if (++clp
->cl_id_uniquifier
== 0)
3408 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3410 struct nfs_fsinfo fsinfo
;
3411 struct rpc_message msg
= {
3412 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3414 .rpc_resp
= &fsinfo
,
3421 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3423 spin_lock(&clp
->cl_lock
);
3424 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3425 clp
->cl_last_renewal
= now
;
3426 spin_unlock(&clp
->cl_lock
);
3431 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3436 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
3440 case -NFS4ERR_RESOURCE
:
3441 /* The IBM lawyers misread another document! */
3442 case -NFS4ERR_DELAY
:
3443 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
3449 struct nfs4_delegreturndata
{
3450 struct nfs4_delegreturnargs args
;
3451 struct nfs4_delegreturnres res
;
3453 nfs4_stateid stateid
;
3454 unsigned long timestamp
;
3455 struct nfs_fattr fattr
;
3459 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3461 struct nfs4_delegreturndata
*data
= calldata
;
3463 nfs4_sequence_done_free_slot(data
->res
.server
, &data
->res
.seq_res
,
3466 data
->rpc_status
= task
->tk_status
;
3467 if (data
->rpc_status
== 0)
3468 renew_lease(data
->res
.server
, data
->timestamp
);
3471 static void nfs4_delegreturn_release(void *calldata
)
3476 #if defined(CONFIG_NFS_V4_1)
3477 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3479 struct nfs4_delegreturndata
*d_data
;
3481 d_data
= (struct nfs4_delegreturndata
*)data
;
3483 if (nfs4_setup_sequence(d_data
->res
.server
->nfs_client
,
3484 &d_data
->args
.seq_args
,
3485 &d_data
->res
.seq_res
, 1, task
))
3487 rpc_call_start(task
);
3489 #endif /* CONFIG_NFS_V4_1 */
3491 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3492 #if defined(CONFIG_NFS_V4_1)
3493 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3494 #endif /* CONFIG_NFS_V4_1 */
3495 .rpc_call_done
= nfs4_delegreturn_done
,
3496 .rpc_release
= nfs4_delegreturn_release
,
3499 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3501 struct nfs4_delegreturndata
*data
;
3502 struct nfs_server
*server
= NFS_SERVER(inode
);
3503 struct rpc_task
*task
;
3504 struct rpc_message msg
= {
3505 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3508 struct rpc_task_setup task_setup_data
= {
3509 .rpc_client
= server
->client
,
3510 .rpc_message
= &msg
,
3511 .callback_ops
= &nfs4_delegreturn_ops
,
3512 .flags
= RPC_TASK_ASYNC
,
3516 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3519 data
->args
.fhandle
= &data
->fh
;
3520 data
->args
.stateid
= &data
->stateid
;
3521 data
->args
.bitmask
= server
->attr_bitmask
;
3522 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3523 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3524 data
->res
.fattr
= &data
->fattr
;
3525 data
->res
.server
= server
;
3526 data
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3527 nfs_fattr_init(data
->res
.fattr
);
3528 data
->timestamp
= jiffies
;
3529 data
->rpc_status
= 0;
3531 task_setup_data
.callback_data
= data
;
3532 msg
.rpc_argp
= &data
->args
,
3533 msg
.rpc_resp
= &data
->res
,
3534 task
= rpc_run_task(&task_setup_data
);
3536 return PTR_ERR(task
);
3539 status
= nfs4_wait_for_completion_rpc_task(task
);
3542 status
= data
->rpc_status
;
3545 nfs_refresh_inode(inode
, &data
->fattr
);
3551 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3553 struct nfs_server
*server
= NFS_SERVER(inode
);
3554 struct nfs4_exception exception
= { };
3557 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3559 case -NFS4ERR_STALE_STATEID
:
3560 case -NFS4ERR_EXPIRED
:
3564 err
= nfs4_handle_exception(server
, err
, &exception
);
3565 } while (exception
.retry
);
3569 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3570 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3573 * sleep, with exponential backoff, and retry the LOCK operation.
3575 static unsigned long
3576 nfs4_set_lock_task_retry(unsigned long timeout
)
3578 schedule_timeout_killable(timeout
);
3580 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3581 return NFS4_LOCK_MAXTIMEOUT
;
3585 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3587 struct inode
*inode
= state
->inode
;
3588 struct nfs_server
*server
= NFS_SERVER(inode
);
3589 struct nfs_client
*clp
= server
->nfs_client
;
3590 struct nfs_lockt_args arg
= {
3591 .fh
= NFS_FH(inode
),
3594 struct nfs_lockt_res res
= {
3597 struct rpc_message msg
= {
3598 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3601 .rpc_cred
= state
->owner
->so_cred
,
3603 struct nfs4_lock_state
*lsp
;
3606 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3607 status
= nfs4_set_lock_state(state
, request
);
3610 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3611 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3612 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3615 request
->fl_type
= F_UNLCK
;
3617 case -NFS4ERR_DENIED
:
3620 request
->fl_ops
->fl_release_private(request
);
3625 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3627 struct nfs4_exception exception
= { };
3631 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3632 _nfs4_proc_getlk(state
, cmd
, request
),
3634 } while (exception
.retry
);
3638 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3641 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3643 res
= posix_lock_file_wait(file
, fl
);
3646 res
= flock_lock_file_wait(file
, fl
);
3654 struct nfs4_unlockdata
{
3655 struct nfs_locku_args arg
;
3656 struct nfs_locku_res res
;
3657 struct nfs4_lock_state
*lsp
;
3658 struct nfs_open_context
*ctx
;
3659 struct file_lock fl
;
3660 const struct nfs_server
*server
;
3661 unsigned long timestamp
;
3664 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3665 struct nfs_open_context
*ctx
,
3666 struct nfs4_lock_state
*lsp
,
3667 struct nfs_seqid
*seqid
)
3669 struct nfs4_unlockdata
*p
;
3670 struct inode
*inode
= lsp
->ls_state
->inode
;
3672 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3675 p
->arg
.fh
= NFS_FH(inode
);
3677 p
->arg
.seqid
= seqid
;
3678 p
->res
.seqid
= seqid
;
3679 p
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3680 p
->arg
.stateid
= &lsp
->ls_stateid
;
3682 atomic_inc(&lsp
->ls_count
);
3683 /* Ensure we don't close file until we're done freeing locks! */
3684 p
->ctx
= get_nfs_open_context(ctx
);
3685 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3686 p
->server
= NFS_SERVER(inode
);
3690 static void nfs4_locku_release_calldata(void *data
)
3692 struct nfs4_unlockdata
*calldata
= data
;
3693 nfs_free_seqid(calldata
->arg
.seqid
);
3694 nfs4_put_lock_state(calldata
->lsp
);
3695 put_nfs_open_context(calldata
->ctx
);
3699 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3701 struct nfs4_unlockdata
*calldata
= data
;
3703 nfs4_sequence_done(calldata
->server
, &calldata
->res
.seq_res
,
3705 if (RPC_ASSASSINATED(task
))
3707 switch (task
->tk_status
) {
3709 memcpy(calldata
->lsp
->ls_stateid
.data
,
3710 calldata
->res
.stateid
.data
,
3711 sizeof(calldata
->lsp
->ls_stateid
.data
));
3712 renew_lease(calldata
->server
, calldata
->timestamp
);
3714 case -NFS4ERR_BAD_STATEID
:
3715 case -NFS4ERR_OLD_STATEID
:
3716 case -NFS4ERR_STALE_STATEID
:
3717 case -NFS4ERR_EXPIRED
:
3720 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
3721 nfs4_restart_rpc(task
,
3722 calldata
->server
->nfs_client
);
3724 nfs4_sequence_free_slot(calldata
->server
->nfs_client
,
3725 &calldata
->res
.seq_res
);
3728 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3730 struct nfs4_unlockdata
*calldata
= data
;
3732 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3734 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3735 /* Note: exit _without_ running nfs4_locku_done */
3736 task
->tk_action
= NULL
;
3739 calldata
->timestamp
= jiffies
;
3740 if (nfs4_setup_sequence(calldata
->server
->nfs_client
,
3741 &calldata
->arg
.seq_args
,
3742 &calldata
->res
.seq_res
, 1, task
))
3744 rpc_call_start(task
);
3747 static const struct rpc_call_ops nfs4_locku_ops
= {
3748 .rpc_call_prepare
= nfs4_locku_prepare
,
3749 .rpc_call_done
= nfs4_locku_done
,
3750 .rpc_release
= nfs4_locku_release_calldata
,
3753 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3754 struct nfs_open_context
*ctx
,
3755 struct nfs4_lock_state
*lsp
,
3756 struct nfs_seqid
*seqid
)
3758 struct nfs4_unlockdata
*data
;
3759 struct rpc_message msg
= {
3760 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3761 .rpc_cred
= ctx
->cred
,
3763 struct rpc_task_setup task_setup_data
= {
3764 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
3765 .rpc_message
= &msg
,
3766 .callback_ops
= &nfs4_locku_ops
,
3767 .workqueue
= nfsiod_workqueue
,
3768 .flags
= RPC_TASK_ASYNC
,
3771 /* Ensure this is an unlock - when canceling a lock, the
3772 * canceled lock is passed in, and it won't be an unlock.
3774 fl
->fl_type
= F_UNLCK
;
3776 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3778 nfs_free_seqid(seqid
);
3779 return ERR_PTR(-ENOMEM
);
3782 msg
.rpc_argp
= &data
->arg
,
3783 msg
.rpc_resp
= &data
->res
,
3784 task_setup_data
.callback_data
= data
;
3785 return rpc_run_task(&task_setup_data
);
3788 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3790 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3791 struct nfs_seqid
*seqid
;
3792 struct nfs4_lock_state
*lsp
;
3793 struct rpc_task
*task
;
3795 unsigned char fl_flags
= request
->fl_flags
;
3797 status
= nfs4_set_lock_state(state
, request
);
3798 /* Unlock _before_ we do the RPC call */
3799 request
->fl_flags
|= FL_EXISTS
;
3800 down_read(&nfsi
->rwsem
);
3801 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
3802 up_read(&nfsi
->rwsem
);
3805 up_read(&nfsi
->rwsem
);
3808 /* Is this a delegated lock? */
3809 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3811 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3812 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3816 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
3817 status
= PTR_ERR(task
);
3820 status
= nfs4_wait_for_completion_rpc_task(task
);
3823 request
->fl_flags
= fl_flags
;
3827 struct nfs4_lockdata
{
3828 struct nfs_lock_args arg
;
3829 struct nfs_lock_res res
;
3830 struct nfs4_lock_state
*lsp
;
3831 struct nfs_open_context
*ctx
;
3832 struct file_lock fl
;
3833 unsigned long timestamp
;
3836 struct nfs_server
*server
;
3839 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3840 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3842 struct nfs4_lockdata
*p
;
3843 struct inode
*inode
= lsp
->ls_state
->inode
;
3844 struct nfs_server
*server
= NFS_SERVER(inode
);
3846 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3850 p
->arg
.fh
= NFS_FH(inode
);
3852 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
);
3853 if (p
->arg
.open_seqid
== NULL
)
3855 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3856 if (p
->arg
.lock_seqid
== NULL
)
3857 goto out_free_seqid
;
3858 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3859 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3860 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3861 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
3862 p
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3865 atomic_inc(&lsp
->ls_count
);
3866 p
->ctx
= get_nfs_open_context(ctx
);
3867 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3870 nfs_free_seqid(p
->arg
.open_seqid
);
3876 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3878 struct nfs4_lockdata
*data
= calldata
;
3879 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3881 dprintk("%s: begin!\n", __func__
);
3882 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3884 /* Do we need to do an open_to_lock_owner? */
3885 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3886 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
3888 data
->arg
.open_stateid
= &state
->stateid
;
3889 data
->arg
.new_lock_owner
= 1;
3890 data
->res
.open_seqid
= data
->arg
.open_seqid
;
3892 data
->arg
.new_lock_owner
= 0;
3893 data
->timestamp
= jiffies
;
3894 if (nfs4_setup_sequence(data
->server
->nfs_client
, &data
->arg
.seq_args
,
3895 &data
->res
.seq_res
, 1, task
))
3897 rpc_call_start(task
);
3898 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
3901 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3903 struct nfs4_lockdata
*data
= calldata
;
3905 dprintk("%s: begin!\n", __func__
);
3907 nfs4_sequence_done_free_slot(data
->server
, &data
->res
.seq_res
,
3910 data
->rpc_status
= task
->tk_status
;
3911 if (RPC_ASSASSINATED(task
))
3913 if (data
->arg
.new_lock_owner
!= 0) {
3914 if (data
->rpc_status
== 0)
3915 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3919 if (data
->rpc_status
== 0) {
3920 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3921 sizeof(data
->lsp
->ls_stateid
.data
));
3922 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3923 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3926 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
3929 static void nfs4_lock_release(void *calldata
)
3931 struct nfs4_lockdata
*data
= calldata
;
3933 dprintk("%s: begin!\n", __func__
);
3934 nfs_free_seqid(data
->arg
.open_seqid
);
3935 if (data
->cancelled
!= 0) {
3936 struct rpc_task
*task
;
3937 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3938 data
->arg
.lock_seqid
);
3941 dprintk("%s: cancelling lock!\n", __func__
);
3943 nfs_free_seqid(data
->arg
.lock_seqid
);
3944 nfs4_put_lock_state(data
->lsp
);
3945 put_nfs_open_context(data
->ctx
);
3947 dprintk("%s: done!\n", __func__
);
3950 static const struct rpc_call_ops nfs4_lock_ops
= {
3951 .rpc_call_prepare
= nfs4_lock_prepare
,
3952 .rpc_call_done
= nfs4_lock_done
,
3953 .rpc_release
= nfs4_lock_release
,
3956 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3958 struct nfs4_lockdata
*data
;
3959 struct rpc_task
*task
;
3960 struct rpc_message msg
= {
3961 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3962 .rpc_cred
= state
->owner
->so_cred
,
3964 struct rpc_task_setup task_setup_data
= {
3965 .rpc_client
= NFS_CLIENT(state
->inode
),
3966 .rpc_message
= &msg
,
3967 .callback_ops
= &nfs4_lock_ops
,
3968 .workqueue
= nfsiod_workqueue
,
3969 .flags
= RPC_TASK_ASYNC
,
3973 dprintk("%s: begin!\n", __func__
);
3974 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
3975 fl
->fl_u
.nfs4_fl
.owner
);
3979 data
->arg
.block
= 1;
3981 data
->arg
.reclaim
= 1;
3982 msg
.rpc_argp
= &data
->arg
,
3983 msg
.rpc_resp
= &data
->res
,
3984 task_setup_data
.callback_data
= data
;
3985 task
= rpc_run_task(&task_setup_data
);
3987 return PTR_ERR(task
);
3988 ret
= nfs4_wait_for_completion_rpc_task(task
);
3990 ret
= data
->rpc_status
;
3992 data
->cancelled
= 1;
3994 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
3998 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4000 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4001 struct nfs4_exception exception
= { };
4005 /* Cache the lock if possible... */
4006 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4008 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
4009 if (err
!= -NFS4ERR_DELAY
)
4011 nfs4_handle_exception(server
, err
, &exception
);
4012 } while (exception
.retry
);
4016 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4018 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4019 struct nfs4_exception exception
= { };
4022 err
= nfs4_set_lock_state(state
, request
);
4026 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4028 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
4029 if (err
!= -NFS4ERR_DELAY
)
4031 nfs4_handle_exception(server
, err
, &exception
);
4032 } while (exception
.retry
);
4036 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4038 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4039 unsigned char fl_flags
= request
->fl_flags
;
4042 /* Is this a delegated open? */
4043 status
= nfs4_set_lock_state(state
, request
);
4046 request
->fl_flags
|= FL_ACCESS
;
4047 status
= do_vfs_lock(request
->fl_file
, request
);
4050 down_read(&nfsi
->rwsem
);
4051 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4052 /* Yes: cache locks! */
4053 /* ...but avoid races with delegation recall... */
4054 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4055 status
= do_vfs_lock(request
->fl_file
, request
);
4058 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
4061 /* Note: we always want to sleep here! */
4062 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4063 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4064 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
4066 up_read(&nfsi
->rwsem
);
4068 request
->fl_flags
= fl_flags
;
4072 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4074 struct nfs4_exception exception
= { };
4078 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4079 if (err
== -NFS4ERR_DENIED
)
4081 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4083 } while (exception
.retry
);
4088 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4090 struct nfs_open_context
*ctx
;
4091 struct nfs4_state
*state
;
4092 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4095 /* verify open state */
4096 ctx
= nfs_file_open_context(filp
);
4099 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4103 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4105 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4108 if (request
->fl_type
== F_UNLCK
)
4109 return nfs4_proc_unlck(state
, cmd
, request
);
4112 status
= nfs4_proc_setlk(state
, cmd
, request
);
4113 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4115 timeout
= nfs4_set_lock_task_retry(timeout
);
4116 status
= -ERESTARTSYS
;
4119 } while(status
< 0);
4123 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4125 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4126 struct nfs4_exception exception
= { };
4129 err
= nfs4_set_lock_state(state
, fl
);
4133 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
4136 printk(KERN_ERR
"%s: unhandled error %d.\n",
4141 case -NFS4ERR_EXPIRED
:
4142 case -NFS4ERR_STALE_CLIENTID
:
4143 case -NFS4ERR_STALE_STATEID
:
4144 nfs4_schedule_state_recovery(server
->nfs_client
);
4148 * The show must go on: exit, but mark the
4149 * stateid as needing recovery.
4151 case -NFS4ERR_ADMIN_REVOKED
:
4152 case -NFS4ERR_BAD_STATEID
:
4153 case -NFS4ERR_OPENMODE
:
4154 nfs4_state_mark_reclaim_nograce(server
->nfs_client
, state
);
4158 case -NFS4ERR_DENIED
:
4159 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4162 case -NFS4ERR_DELAY
:
4165 err
= nfs4_handle_exception(server
, err
, &exception
);
4166 } while (exception
.retry
);
4171 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4173 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
4174 size_t buflen
, int flags
)
4176 struct inode
*inode
= dentry
->d_inode
;
4178 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4181 return nfs4_proc_set_acl(inode
, buf
, buflen
);
4184 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
4185 * and that's what we'll do for e.g. user attributes that haven't been set.
4186 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
4187 * attributes in kernel-managed attribute namespaces. */
4188 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
4191 struct inode
*inode
= dentry
->d_inode
;
4193 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4196 return nfs4_proc_get_acl(inode
, buf
, buflen
);
4199 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
4201 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
4203 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4205 if (buf
&& buflen
< len
)
4208 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
4212 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4214 if (!((fattr
->valid
& NFS_ATTR_FATTR_FILEID
) &&
4215 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4216 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4219 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4220 NFS_ATTR_FATTR_NLINK
;
4221 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4225 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4226 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4228 struct nfs_server
*server
= NFS_SERVER(dir
);
4230 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4231 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
4233 struct nfs4_fs_locations_arg args
= {
4234 .dir_fh
= NFS_FH(dir
),
4239 struct nfs4_fs_locations_res res
= {
4240 .fs_locations
= fs_locations
,
4242 struct rpc_message msg
= {
4243 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4249 dprintk("%s: start\n", __func__
);
4250 nfs_fattr_init(&fs_locations
->fattr
);
4251 fs_locations
->server
= server
;
4252 fs_locations
->nlocations
= 0;
4253 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
4254 nfs_fixup_referral_attributes(&fs_locations
->fattr
);
4255 dprintk("%s: returned status = %d\n", __func__
, status
);
4259 #ifdef CONFIG_NFS_V4_1
4261 * nfs4_proc_exchange_id()
4263 * Since the clientid has expired, all compounds using sessions
4264 * associated with the stale clientid will be returning
4265 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4266 * be in some phase of session reset.
4268 static int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4270 nfs4_verifier verifier
;
4271 struct nfs41_exchange_id_args args
= {
4273 .flags
= clp
->cl_exchange_flags
,
4275 struct nfs41_exchange_id_res res
= {
4279 struct rpc_message msg
= {
4280 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4287 dprintk("--> %s\n", __func__
);
4288 BUG_ON(clp
== NULL
);
4290 p
= (u32
*)verifier
.data
;
4291 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4292 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4293 args
.verifier
= &verifier
;
4296 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4299 rpc_peeraddr2str(clp
->cl_rpcclient
,
4301 clp
->cl_id_uniquifier
);
4303 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
4305 if (status
!= NFS4ERR_CLID_INUSE
)
4311 if (++clp
->cl_id_uniquifier
== 0)
4315 dprintk("<-- %s status= %d\n", __func__
, status
);
4319 struct nfs4_get_lease_time_data
{
4320 struct nfs4_get_lease_time_args
*args
;
4321 struct nfs4_get_lease_time_res
*res
;
4322 struct nfs_client
*clp
;
4325 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4329 struct nfs4_get_lease_time_data
*data
=
4330 (struct nfs4_get_lease_time_data
*)calldata
;
4332 dprintk("--> %s\n", __func__
);
4333 /* just setup sequence, do not trigger session recovery
4334 since we're invoked within one */
4335 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4336 &data
->args
->la_seq_args
,
4337 &data
->res
->lr_seq_res
, 0, task
);
4339 BUG_ON(ret
== -EAGAIN
);
4340 rpc_call_start(task
);
4341 dprintk("<-- %s\n", __func__
);
4345 * Called from nfs4_state_manager thread for session setup, so don't recover
4346 * from sequence operation or clientid errors.
4348 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4350 struct nfs4_get_lease_time_data
*data
=
4351 (struct nfs4_get_lease_time_data
*)calldata
;
4353 dprintk("--> %s\n", __func__
);
4354 nfs41_sequence_done(data
->clp
, &data
->res
->lr_seq_res
, task
->tk_status
);
4355 switch (task
->tk_status
) {
4356 case -NFS4ERR_DELAY
:
4357 case -NFS4ERR_GRACE
:
4358 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
4359 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
4360 task
->tk_status
= 0;
4361 nfs4_restart_rpc(task
, data
->clp
);
4364 nfs41_sequence_free_slot(data
->clp
, &data
->res
->lr_seq_res
);
4365 dprintk("<-- %s\n", __func__
);
4368 struct rpc_call_ops nfs4_get_lease_time_ops
= {
4369 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
4370 .rpc_call_done
= nfs4_get_lease_time_done
,
4373 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
4375 struct rpc_task
*task
;
4376 struct nfs4_get_lease_time_args args
;
4377 struct nfs4_get_lease_time_res res
= {
4378 .lr_fsinfo
= fsinfo
,
4380 struct nfs4_get_lease_time_data data
= {
4385 struct rpc_message msg
= {
4386 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
4390 struct rpc_task_setup task_setup
= {
4391 .rpc_client
= clp
->cl_rpcclient
,
4392 .rpc_message
= &msg
,
4393 .callback_ops
= &nfs4_get_lease_time_ops
,
4394 .callback_data
= &data
4398 res
.lr_seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
4399 dprintk("--> %s\n", __func__
);
4400 task
= rpc_run_task(&task_setup
);
4403 status
= PTR_ERR(task
);
4405 status
= task
->tk_status
;
4408 dprintk("<-- %s return %d\n", __func__
, status
);
4414 * Reset a slot table
4416 static int nfs4_reset_slot_table(struct nfs4_slot_table
*tbl
, int max_slots
,
4417 int old_max_slots
, int ivalue
)
4422 dprintk("--> %s: max_reqs=%u, tbl %p\n", __func__
, max_slots
, tbl
);
4425 * Until we have dynamic slot table adjustment, insist
4426 * upon the same slot table size
4428 if (max_slots
!= old_max_slots
) {
4429 dprintk("%s reset slot table does't match old\n",
4431 ret
= -EINVAL
; /*XXX NFS4ERR_REQ_TOO_BIG ? */
4434 spin_lock(&tbl
->slot_tbl_lock
);
4435 for (i
= 0; i
< max_slots
; ++i
)
4436 tbl
->slots
[i
].seq_nr
= ivalue
;
4437 tbl
->highest_used_slotid
= -1;
4438 spin_unlock(&tbl
->slot_tbl_lock
);
4439 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4440 tbl
, tbl
->slots
, tbl
->max_slots
);
4442 dprintk("<-- %s: return %d\n", __func__
, ret
);
4447 * Reset the forechannel and backchannel slot tables
4449 static int nfs4_reset_slot_tables(struct nfs4_session
*session
)
4453 status
= nfs4_reset_slot_table(&session
->fc_slot_table
,
4454 session
->fc_attrs
.max_reqs
,
4455 session
->fc_slot_table
.max_slots
,
4460 status
= nfs4_reset_slot_table(&session
->bc_slot_table
,
4461 session
->bc_attrs
.max_reqs
,
4462 session
->bc_slot_table
.max_slots
,
4467 /* Destroy the slot table */
4468 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
4470 if (session
->fc_slot_table
.slots
!= NULL
) {
4471 kfree(session
->fc_slot_table
.slots
);
4472 session
->fc_slot_table
.slots
= NULL
;
4474 if (session
->bc_slot_table
.slots
!= NULL
) {
4475 kfree(session
->bc_slot_table
.slots
);
4476 session
->bc_slot_table
.slots
= NULL
;
4482 * Initialize slot table
4484 static int nfs4_init_slot_table(struct nfs4_slot_table
*tbl
,
4485 int max_slots
, int ivalue
)
4488 struct nfs4_slot
*slot
;
4491 BUG_ON(max_slots
> NFS4_MAX_SLOT_TABLE
);
4493 dprintk("--> %s: max_reqs=%u\n", __func__
, max_slots
);
4495 slot
= kcalloc(max_slots
, sizeof(struct nfs4_slot
), GFP_KERNEL
);
4498 for (i
= 0; i
< max_slots
; ++i
)
4499 slot
[i
].seq_nr
= ivalue
;
4502 spin_lock(&tbl
->slot_tbl_lock
);
4503 if (tbl
->slots
!= NULL
) {
4504 spin_unlock(&tbl
->slot_tbl_lock
);
4505 dprintk("%s: slot table already initialized. tbl=%p slots=%p\n",
4506 __func__
, tbl
, tbl
->slots
);
4510 tbl
->max_slots
= max_slots
;
4512 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
4513 spin_unlock(&tbl
->slot_tbl_lock
);
4514 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4515 tbl
, tbl
->slots
, tbl
->max_slots
);
4517 dprintk("<-- %s: return %d\n", __func__
, ret
);
4526 * Initialize the forechannel and backchannel tables
4528 static int nfs4_init_slot_tables(struct nfs4_session
*session
)
4532 status
= nfs4_init_slot_table(&session
->fc_slot_table
,
4533 session
->fc_attrs
.max_reqs
, 1);
4537 status
= nfs4_init_slot_table(&session
->bc_slot_table
,
4538 session
->bc_attrs
.max_reqs
, 0);
4540 nfs4_destroy_slot_tables(session
);
4545 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
4547 struct nfs4_session
*session
;
4548 struct nfs4_slot_table
*tbl
;
4550 session
= kzalloc(sizeof(struct nfs4_session
), GFP_KERNEL
);
4554 set_bit(NFS4CLNT_SESSION_SETUP
, &clp
->cl_state
);
4556 * The create session reply races with the server back
4557 * channel probe. Mark the client NFS_CS_SESSION_INITING
4558 * so that the client back channel can find the
4561 clp
->cl_cons_state
= NFS_CS_SESSION_INITING
;
4563 tbl
= &session
->fc_slot_table
;
4564 spin_lock_init(&tbl
->slot_tbl_lock
);
4565 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
4567 tbl
= &session
->bc_slot_table
;
4568 spin_lock_init(&tbl
->slot_tbl_lock
);
4569 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
4575 void nfs4_destroy_session(struct nfs4_session
*session
)
4577 nfs4_proc_destroy_session(session
);
4578 dprintk("%s Destroy backchannel for xprt %p\n",
4579 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
4580 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
4581 NFS41_BC_MIN_CALLBACKS
);
4582 nfs4_destroy_slot_tables(session
);
4587 * Initialize the values to be used by the client in CREATE_SESSION
4588 * If nfs4_init_session set the fore channel request and response sizes,
4591 * Set the back channel max_resp_sz_cached to zero to force the client to
4592 * always set csa_cachethis to FALSE because the current implementation
4593 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
4595 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
4597 struct nfs4_session
*session
= args
->client
->cl_session
;
4598 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
4599 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
4602 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
4604 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
4605 /* Fore channel attributes */
4606 args
->fc_attrs
.headerpadsz
= 0;
4607 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
4608 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
4609 args
->fc_attrs
.max_resp_sz_cached
= mxresp_sz
;
4610 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
4611 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
4613 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
4614 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4616 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
4617 args
->fc_attrs
.max_resp_sz_cached
, args
->fc_attrs
.max_ops
,
4618 args
->fc_attrs
.max_reqs
);
4620 /* Back channel attributes */
4621 args
->bc_attrs
.headerpadsz
= 0;
4622 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
4623 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
4624 args
->bc_attrs
.max_resp_sz_cached
= 0;
4625 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
4626 args
->bc_attrs
.max_reqs
= 1;
4628 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
4629 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4631 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
4632 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
4633 args
->bc_attrs
.max_reqs
);
4636 static int _verify_channel_attr(char *chan
, char *attr_name
, u32 sent
, u32 rcvd
)
4640 printk(KERN_WARNING
"%s: Session INVALID: %s channel %s increased. "
4641 "sent=%u rcvd=%u\n", __func__
, chan
, attr_name
, sent
, rcvd
);
4645 #define _verify_fore_channel_attr(_name_) \
4646 _verify_channel_attr("fore", #_name_, \
4647 args->fc_attrs._name_, \
4648 session->fc_attrs._name_)
4650 #define _verify_back_channel_attr(_name_) \
4651 _verify_channel_attr("back", #_name_, \
4652 args->bc_attrs._name_, \
4653 session->bc_attrs._name_)
4656 * The server is not allowed to increase the fore channel header pad size,
4657 * maximum response size, or maximum number of operations.
4659 * The back channel attributes are only negotiatied down: We send what the
4660 * (back channel) server insists upon.
4662 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
4663 struct nfs4_session
*session
)
4667 ret
|= _verify_fore_channel_attr(headerpadsz
);
4668 ret
|= _verify_fore_channel_attr(max_resp_sz
);
4669 ret
|= _verify_fore_channel_attr(max_ops
);
4671 ret
|= _verify_back_channel_attr(headerpadsz
);
4672 ret
|= _verify_back_channel_attr(max_rqst_sz
);
4673 ret
|= _verify_back_channel_attr(max_resp_sz
);
4674 ret
|= _verify_back_channel_attr(max_resp_sz_cached
);
4675 ret
|= _verify_back_channel_attr(max_ops
);
4676 ret
|= _verify_back_channel_attr(max_reqs
);
4681 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
4683 struct nfs4_session
*session
= clp
->cl_session
;
4684 struct nfs41_create_session_args args
= {
4686 .cb_program
= NFS4_CALLBACK
,
4688 struct nfs41_create_session_res res
= {
4691 struct rpc_message msg
= {
4692 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
4698 nfs4_init_channel_attrs(&args
);
4699 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
4701 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
4704 /* Verify the session's negotiated channel_attrs values */
4705 status
= nfs4_verify_channel_attrs(&args
, session
);
4707 /* Increment the clientid slot sequence id */
4715 * Issues a CREATE_SESSION operation to the server.
4716 * It is the responsibility of the caller to verify the session is
4717 * expired before calling this routine.
4719 int nfs4_proc_create_session(struct nfs_client
*clp
, int reset
)
4723 struct nfs_fsinfo fsinfo
;
4724 struct nfs4_session
*session
= clp
->cl_session
;
4726 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
4728 status
= _nfs4_proc_create_session(clp
);
4732 /* Init or reset the fore channel */
4734 status
= nfs4_reset_slot_tables(session
);
4736 status
= nfs4_init_slot_tables(session
);
4737 dprintk("fore channel slot table initialization returned %d\n", status
);
4741 ptr
= (unsigned *)&session
->sess_id
.data
[0];
4742 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
4743 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
4746 /* Lease time is aleady set */
4749 /* Get the lease time */
4750 status
= nfs4_proc_get_lease_time(clp
, &fsinfo
);
4752 /* Update lease time and schedule renewal */
4753 spin_lock(&clp
->cl_lock
);
4754 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4755 clp
->cl_last_renewal
= jiffies
;
4756 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
4757 spin_unlock(&clp
->cl_lock
);
4759 nfs4_schedule_state_renewal(clp
);
4762 dprintk("<-- %s\n", __func__
);
4767 * Issue the over-the-wire RPC DESTROY_SESSION.
4768 * The caller must serialize access to this routine.
4770 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
4773 struct rpc_message msg
;
4775 dprintk("--> nfs4_proc_destroy_session\n");
4777 /* session is still being setup */
4778 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
4781 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
4782 msg
.rpc_argp
= session
;
4783 msg
.rpc_resp
= NULL
;
4784 msg
.rpc_cred
= NULL
;
4785 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
4789 "Got error %d from the server on DESTROY_SESSION. "
4790 "Session has been destroyed regardless...\n", status
);
4792 dprintk("<-- nfs4_proc_destroy_session\n");
4797 * Renew the cl_session lease.
4799 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4801 struct nfs4_sequence_args args
;
4802 struct nfs4_sequence_res res
;
4804 struct rpc_message msg
= {
4805 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
4811 args
.sa_cache_this
= 0;
4813 return nfs4_call_sync_sequence(clp
, clp
->cl_rpcclient
, &msg
, &args
,
4817 void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
4819 struct nfs_client
*clp
= (struct nfs_client
*)data
;
4821 nfs41_sequence_done(clp
, task
->tk_msg
.rpc_resp
, task
->tk_status
);
4823 if (task
->tk_status
< 0) {
4824 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
4826 if (_nfs4_async_handle_error(task
, NULL
, clp
, NULL
)
4828 nfs4_restart_rpc(task
, clp
);
4832 nfs41_sequence_free_slot(clp
, task
->tk_msg
.rpc_resp
);
4833 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
4835 put_rpccred(task
->tk_msg
.rpc_cred
);
4836 kfree(task
->tk_msg
.rpc_argp
);
4837 kfree(task
->tk_msg
.rpc_resp
);
4839 dprintk("<-- %s\n", __func__
);
4842 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
4844 struct nfs_client
*clp
;
4845 struct nfs4_sequence_args
*args
;
4846 struct nfs4_sequence_res
*res
;
4848 clp
= (struct nfs_client
*)data
;
4849 args
= task
->tk_msg
.rpc_argp
;
4850 res
= task
->tk_msg
.rpc_resp
;
4852 if (nfs4_setup_sequence(clp
, args
, res
, 0, task
))
4854 rpc_call_start(task
);
4857 static const struct rpc_call_ops nfs41_sequence_ops
= {
4858 .rpc_call_done
= nfs41_sequence_call_done
,
4859 .rpc_call_prepare
= nfs41_sequence_prepare
,
4862 static int nfs41_proc_async_sequence(struct nfs_client
*clp
,
4863 struct rpc_cred
*cred
)
4865 struct nfs4_sequence_args
*args
;
4866 struct nfs4_sequence_res
*res
;
4867 struct rpc_message msg
= {
4868 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
4872 args
= kzalloc(sizeof(*args
), GFP_KERNEL
);
4875 res
= kzalloc(sizeof(*res
), GFP_KERNEL
);
4880 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
4881 msg
.rpc_argp
= args
;
4884 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
4885 &nfs41_sequence_ops
, (void *)clp
);
4888 #endif /* CONFIG_NFS_V4_1 */
4890 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
4891 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
4892 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
4893 .recover_open
= nfs4_open_reclaim
,
4894 .recover_lock
= nfs4_lock_reclaim
,
4895 .establish_clid
= nfs4_init_clientid
,
4896 .get_clid_cred
= nfs4_get_setclientid_cred
,
4899 #if defined(CONFIG_NFS_V4_1)
4900 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
4901 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
4902 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
4903 .recover_open
= nfs4_open_reclaim
,
4904 .recover_lock
= nfs4_lock_reclaim
,
4905 .establish_clid
= nfs4_proc_exchange_id
,
4906 .get_clid_cred
= nfs4_get_exchange_id_cred
,
4908 #endif /* CONFIG_NFS_V4_1 */
4910 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
4911 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
4912 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
4913 .recover_open
= nfs4_open_expired
,
4914 .recover_lock
= nfs4_lock_expired
,
4915 .establish_clid
= nfs4_init_clientid
,
4916 .get_clid_cred
= nfs4_get_setclientid_cred
,
4919 #if defined(CONFIG_NFS_V4_1)
4920 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
4921 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
4922 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
4923 .recover_open
= nfs4_open_expired
,
4924 .recover_lock
= nfs4_lock_expired
,
4925 .establish_clid
= nfs4_proc_exchange_id
,
4926 .get_clid_cred
= nfs4_get_exchange_id_cred
,
4928 #endif /* CONFIG_NFS_V4_1 */
4930 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
4931 .sched_state_renewal
= nfs4_proc_async_renew
,
4932 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
4933 .renew_lease
= nfs4_proc_renew
,
4936 #if defined(CONFIG_NFS_V4_1)
4937 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
4938 .sched_state_renewal
= nfs41_proc_async_sequence
,
4939 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
4940 .renew_lease
= nfs4_proc_sequence
,
4945 * Per minor version reboot and network partition recovery ops
4948 struct nfs4_state_recovery_ops
*nfs4_reboot_recovery_ops
[] = {
4949 &nfs40_reboot_recovery_ops
,
4950 #if defined(CONFIG_NFS_V4_1)
4951 &nfs41_reboot_recovery_ops
,
4955 struct nfs4_state_recovery_ops
*nfs4_nograce_recovery_ops
[] = {
4956 &nfs40_nograce_recovery_ops
,
4957 #if defined(CONFIG_NFS_V4_1)
4958 &nfs41_nograce_recovery_ops
,
4962 struct nfs4_state_maintenance_ops
*nfs4_state_renewal_ops
[] = {
4963 &nfs40_state_renewal_ops
,
4964 #if defined(CONFIG_NFS_V4_1)
4965 &nfs41_state_renewal_ops
,
4969 static const struct inode_operations nfs4_file_inode_operations
= {
4970 .permission
= nfs_permission
,
4971 .getattr
= nfs_getattr
,
4972 .setattr
= nfs_setattr
,
4973 .getxattr
= nfs4_getxattr
,
4974 .setxattr
= nfs4_setxattr
,
4975 .listxattr
= nfs4_listxattr
,
4978 const struct nfs_rpc_ops nfs_v4_clientops
= {
4979 .version
= 4, /* protocol version */
4980 .dentry_ops
= &nfs4_dentry_operations
,
4981 .dir_inode_ops
= &nfs4_dir_inode_operations
,
4982 .file_inode_ops
= &nfs4_file_inode_operations
,
4983 .getroot
= nfs4_proc_get_root
,
4984 .getattr
= nfs4_proc_getattr
,
4985 .setattr
= nfs4_proc_setattr
,
4986 .lookupfh
= nfs4_proc_lookupfh
,
4987 .lookup
= nfs4_proc_lookup
,
4988 .access
= nfs4_proc_access
,
4989 .readlink
= nfs4_proc_readlink
,
4990 .create
= nfs4_proc_create
,
4991 .remove
= nfs4_proc_remove
,
4992 .unlink_setup
= nfs4_proc_unlink_setup
,
4993 .unlink_done
= nfs4_proc_unlink_done
,
4994 .rename
= nfs4_proc_rename
,
4995 .link
= nfs4_proc_link
,
4996 .symlink
= nfs4_proc_symlink
,
4997 .mkdir
= nfs4_proc_mkdir
,
4998 .rmdir
= nfs4_proc_remove
,
4999 .readdir
= nfs4_proc_readdir
,
5000 .mknod
= nfs4_proc_mknod
,
5001 .statfs
= nfs4_proc_statfs
,
5002 .fsinfo
= nfs4_proc_fsinfo
,
5003 .pathconf
= nfs4_proc_pathconf
,
5004 .set_capabilities
= nfs4_server_capabilities
,
5005 .decode_dirent
= nfs4_decode_dirent
,
5006 .read_setup
= nfs4_proc_read_setup
,
5007 .read_done
= nfs4_read_done
,
5008 .write_setup
= nfs4_proc_write_setup
,
5009 .write_done
= nfs4_write_done
,
5010 .commit_setup
= nfs4_proc_commit_setup
,
5011 .commit_done
= nfs4_commit_done
,
5012 .lock
= nfs4_proc_lock
,
5013 .clear_acl_cache
= nfs4_zap_acl_attr
,
5014 .close_context
= nfs4_close_context
,