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/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/slab.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>
52 #include <linux/xattr.h>
53 #include <linux/utsname.h>
56 #include "delegation.h"
62 #define NFSDBG_FACILITY NFSDBG_PROC
64 #define NFS4_POLL_RETRY_MIN (HZ/10)
65 #define NFS4_POLL_RETRY_MAX (15*HZ)
67 #define NFS4_MAX_LOOP_ON_RECOVER (10)
70 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
71 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
72 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
73 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
74 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
75 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
76 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
77 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
78 struct nfs4_state
*state
);
80 /* Prevent leaks of NFSv4 errors into userland */
81 static int nfs4_map_errors(int err
)
86 case -NFS4ERR_RESOURCE
:
89 dprintk("%s could not handle NFSv4 error %d\n",
97 * This is our standard bitmap for GETATTR requests.
99 const u32 nfs4_fattr_bitmap
[2] = {
101 | FATTR4_WORD0_CHANGE
104 | FATTR4_WORD0_FILEID
,
106 | FATTR4_WORD1_NUMLINKS
108 | FATTR4_WORD1_OWNER_GROUP
109 | FATTR4_WORD1_RAWDEV
110 | FATTR4_WORD1_SPACE_USED
111 | FATTR4_WORD1_TIME_ACCESS
112 | FATTR4_WORD1_TIME_METADATA
113 | FATTR4_WORD1_TIME_MODIFY
116 const u32 nfs4_statfs_bitmap
[2] = {
117 FATTR4_WORD0_FILES_AVAIL
118 | FATTR4_WORD0_FILES_FREE
119 | FATTR4_WORD0_FILES_TOTAL
,
120 FATTR4_WORD1_SPACE_AVAIL
121 | FATTR4_WORD1_SPACE_FREE
122 | FATTR4_WORD1_SPACE_TOTAL
125 const u32 nfs4_pathconf_bitmap
[2] = {
127 | FATTR4_WORD0_MAXNAME
,
131 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
132 | FATTR4_WORD0_MAXREAD
133 | FATTR4_WORD0_MAXWRITE
134 | FATTR4_WORD0_LEASE_TIME
,
135 FATTR4_WORD1_TIME_DELTA
136 | FATTR4_WORD1_FS_LAYOUT_TYPES
139 const u32 nfs4_fs_locations_bitmap
[2] = {
141 | FATTR4_WORD0_CHANGE
144 | FATTR4_WORD0_FILEID
145 | FATTR4_WORD0_FS_LOCATIONS
,
147 | FATTR4_WORD1_NUMLINKS
149 | FATTR4_WORD1_OWNER_GROUP
150 | FATTR4_WORD1_RAWDEV
151 | FATTR4_WORD1_SPACE_USED
152 | FATTR4_WORD1_TIME_ACCESS
153 | FATTR4_WORD1_TIME_METADATA
154 | FATTR4_WORD1_TIME_MODIFY
155 | FATTR4_WORD1_MOUNTED_ON_FILEID
158 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
159 struct nfs4_readdir_arg
*readdir
)
163 BUG_ON(readdir
->count
< 80);
165 readdir
->cookie
= cookie
;
166 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
171 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
176 * NFSv4 servers do not return entries for '.' and '..'
177 * Therefore, we fake these entries here. We let '.'
178 * have cookie 0 and '..' have cookie 1. Note that
179 * when talking to the server, we always send cookie 0
182 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
185 *p
++ = xdr_one
; /* next */
186 *p
++ = xdr_zero
; /* cookie, first word */
187 *p
++ = xdr_one
; /* cookie, second word */
188 *p
++ = xdr_one
; /* entry len */
189 memcpy(p
, ".\0\0\0", 4); /* entry */
191 *p
++ = xdr_one
; /* bitmap length */
192 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
193 *p
++ = htonl(8); /* attribute buffer length */
194 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
197 *p
++ = xdr_one
; /* next */
198 *p
++ = xdr_zero
; /* cookie, first word */
199 *p
++ = xdr_two
; /* cookie, second word */
200 *p
++ = xdr_two
; /* entry len */
201 memcpy(p
, "..\0\0", 4); /* entry */
203 *p
++ = xdr_one
; /* bitmap length */
204 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
205 *p
++ = htonl(8); /* attribute buffer length */
206 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
208 readdir
->pgbase
= (char *)p
- (char *)start
;
209 readdir
->count
-= readdir
->pgbase
;
210 kunmap_atomic(start
, KM_USER0
);
213 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
219 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
220 nfs_wait_bit_killable
, TASK_KILLABLE
);
224 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
231 *timeout
= NFS4_POLL_RETRY_MIN
;
232 if (*timeout
> NFS4_POLL_RETRY_MAX
)
233 *timeout
= NFS4_POLL_RETRY_MAX
;
234 schedule_timeout_killable(*timeout
);
235 if (fatal_signal_pending(current
))
241 /* This is the error handling routine for processes that are allowed
244 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
246 struct nfs_client
*clp
= server
->nfs_client
;
247 struct nfs4_state
*state
= exception
->state
;
250 exception
->retry
= 0;
254 case -NFS4ERR_ADMIN_REVOKED
:
255 case -NFS4ERR_BAD_STATEID
:
256 case -NFS4ERR_OPENMODE
:
259 nfs4_schedule_stateid_recovery(server
, state
);
260 goto wait_on_recovery
;
261 case -NFS4ERR_STALE_STATEID
:
262 case -NFS4ERR_STALE_CLIENTID
:
263 case -NFS4ERR_EXPIRED
:
264 nfs4_schedule_lease_recovery(clp
);
265 goto wait_on_recovery
;
266 #if defined(CONFIG_NFS_V4_1)
267 case -NFS4ERR_BADSESSION
:
268 case -NFS4ERR_BADSLOT
:
269 case -NFS4ERR_BAD_HIGH_SLOT
:
270 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
271 case -NFS4ERR_DEADSESSION
:
272 case -NFS4ERR_SEQ_FALSE_RETRY
:
273 case -NFS4ERR_SEQ_MISORDERED
:
274 dprintk("%s ERROR: %d Reset session\n", __func__
,
276 nfs4_schedule_session_recovery(clp
->cl_session
);
277 exception
->retry
= 1;
279 #endif /* defined(CONFIG_NFS_V4_1) */
280 case -NFS4ERR_FILE_OPEN
:
281 if (exception
->timeout
> HZ
) {
282 /* We have retried a decent amount, time to
291 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
294 case -NFS4ERR_OLD_STATEID
:
295 exception
->retry
= 1;
297 /* We failed to handle the error */
298 return nfs4_map_errors(ret
);
300 ret
= nfs4_wait_clnt_recover(clp
);
302 exception
->retry
= 1;
307 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
309 spin_lock(&clp
->cl_lock
);
310 if (time_before(clp
->cl_last_renewal
,timestamp
))
311 clp
->cl_last_renewal
= timestamp
;
312 spin_unlock(&clp
->cl_lock
);
315 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
317 do_renew_lease(server
->nfs_client
, timestamp
);
320 #if defined(CONFIG_NFS_V4_1)
323 * nfs4_free_slot - free a slot and efficiently update slot table.
325 * freeing a slot is trivially done by clearing its respective bit
327 * If the freed slotid equals highest_used_slotid we want to update it
328 * so that the server would be able to size down the slot table if needed,
329 * otherwise we know that the highest_used_slotid is still in use.
330 * When updating highest_used_slotid there may be "holes" in the bitmap
331 * so we need to scan down from highest_used_slotid to 0 looking for the now
332 * highest slotid in use.
333 * If none found, highest_used_slotid is set to -1.
335 * Must be called while holding tbl->slot_tbl_lock
338 nfs4_free_slot(struct nfs4_slot_table
*tbl
, struct nfs4_slot
*free_slot
)
340 int free_slotid
= free_slot
- tbl
->slots
;
341 int slotid
= free_slotid
;
343 BUG_ON(slotid
< 0 || slotid
>= NFS4_MAX_SLOT_TABLE
);
344 /* clear used bit in bitmap */
345 __clear_bit(slotid
, tbl
->used_slots
);
347 /* update highest_used_slotid when it is freed */
348 if (slotid
== tbl
->highest_used_slotid
) {
349 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
350 if (slotid
< tbl
->max_slots
)
351 tbl
->highest_used_slotid
= slotid
;
353 tbl
->highest_used_slotid
= -1;
355 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
356 free_slotid
, tbl
->highest_used_slotid
);
360 * Signal state manager thread if session fore channel is drained
362 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
364 struct rpc_task
*task
;
366 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
367 task
= rpc_wake_up_next(&ses
->fc_slot_table
.slot_tbl_waitq
);
369 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
373 if (ses
->fc_slot_table
.highest_used_slotid
!= -1)
376 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
377 complete(&ses
->fc_slot_table
.complete
);
381 * Signal state manager thread if session back channel is drained
383 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
385 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
386 ses
->bc_slot_table
.highest_used_slotid
!= -1)
388 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
389 complete(&ses
->bc_slot_table
.complete
);
392 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
394 struct nfs4_slot_table
*tbl
;
396 tbl
= &res
->sr_session
->fc_slot_table
;
398 /* just wake up the next guy waiting since
399 * we may have not consumed a slot after all */
400 dprintk("%s: No slot\n", __func__
);
404 spin_lock(&tbl
->slot_tbl_lock
);
405 nfs4_free_slot(tbl
, res
->sr_slot
);
406 nfs4_check_drain_fc_complete(res
->sr_session
);
407 spin_unlock(&tbl
->slot_tbl_lock
);
411 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
413 unsigned long timestamp
;
414 struct nfs_client
*clp
;
417 * sr_status remains 1 if an RPC level error occurred. The server
418 * may or may not have processed the sequence operation..
419 * Proceed as if the server received and processed the sequence
422 if (res
->sr_status
== 1)
423 res
->sr_status
= NFS_OK
;
425 /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */
429 /* Check the SEQUENCE operation status */
430 switch (res
->sr_status
) {
432 /* Update the slot's sequence and clientid lease timer */
433 ++res
->sr_slot
->seq_nr
;
434 timestamp
= res
->sr_renewal_time
;
435 clp
= res
->sr_session
->clp
;
436 do_renew_lease(clp
, timestamp
);
437 /* Check sequence flags */
438 if (res
->sr_status_flags
!= 0)
439 nfs4_schedule_lease_recovery(clp
);
442 /* The server detected a resend of the RPC call and
443 * returned NFS4ERR_DELAY as per Section 2.10.6.2
446 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
448 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
449 res
->sr_slot
->seq_nr
);
452 /* Just update the slot sequence no. */
453 ++res
->sr_slot
->seq_nr
;
456 /* The session may be reset by one of the error handlers. */
457 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
458 nfs41_sequence_free_slot(res
);
461 if (!rpc_restart_call(task
))
463 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
467 static int nfs4_sequence_done(struct rpc_task
*task
,
468 struct nfs4_sequence_res
*res
)
470 if (res
->sr_session
== NULL
)
472 return nfs41_sequence_done(task
, res
);
476 * nfs4_find_slot - efficiently look for a free slot
478 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
479 * If found, we mark the slot as used, update the highest_used_slotid,
480 * and respectively set up the sequence operation args.
481 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
483 * Note: must be called with under the slot_tbl_lock.
486 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
489 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
490 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
492 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
493 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
495 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
496 if (slotid
>= tbl
->max_slots
)
498 __set_bit(slotid
, tbl
->used_slots
);
499 if (slotid
> tbl
->highest_used_slotid
)
500 tbl
->highest_used_slotid
= slotid
;
503 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
504 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
508 int nfs41_setup_sequence(struct nfs4_session
*session
,
509 struct nfs4_sequence_args
*args
,
510 struct nfs4_sequence_res
*res
,
512 struct rpc_task
*task
)
514 struct nfs4_slot
*slot
;
515 struct nfs4_slot_table
*tbl
;
518 dprintk("--> %s\n", __func__
);
519 /* slot already allocated? */
520 if (res
->sr_slot
!= NULL
)
523 tbl
= &session
->fc_slot_table
;
525 spin_lock(&tbl
->slot_tbl_lock
);
526 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
527 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
529 * The state manager will wait until the slot table is empty.
530 * Schedule the reset thread
532 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
533 spin_unlock(&tbl
->slot_tbl_lock
);
534 dprintk("%s Schedule Session Reset\n", __func__
);
538 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
539 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
540 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
541 spin_unlock(&tbl
->slot_tbl_lock
);
542 dprintk("%s enforce FIFO order\n", __func__
);
546 slotid
= nfs4_find_slot(tbl
);
547 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
548 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
549 spin_unlock(&tbl
->slot_tbl_lock
);
550 dprintk("<-- %s: no free slots\n", __func__
);
553 spin_unlock(&tbl
->slot_tbl_lock
);
555 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
556 slot
= tbl
->slots
+ slotid
;
557 args
->sa_session
= session
;
558 args
->sa_slotid
= slotid
;
559 args
->sa_cache_this
= cache_reply
;
561 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
563 res
->sr_session
= session
;
565 res
->sr_renewal_time
= jiffies
;
566 res
->sr_status_flags
= 0;
568 * sr_status is only set in decode_sequence, and so will remain
569 * set to 1 if an rpc level failure occurs.
574 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
576 int nfs4_setup_sequence(const struct nfs_server
*server
,
577 struct nfs4_sequence_args
*args
,
578 struct nfs4_sequence_res
*res
,
580 struct rpc_task
*task
)
582 struct nfs4_session
*session
= nfs4_get_session(server
);
585 if (session
== NULL
) {
586 args
->sa_session
= NULL
;
587 res
->sr_session
= NULL
;
591 dprintk("--> %s clp %p session %p sr_slot %td\n",
592 __func__
, session
->clp
, session
, res
->sr_slot
?
593 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
595 ret
= nfs41_setup_sequence(session
, args
, res
, cache_reply
,
598 dprintk("<-- %s status=%d\n", __func__
, ret
);
602 struct nfs41_call_sync_data
{
603 const struct nfs_server
*seq_server
;
604 struct nfs4_sequence_args
*seq_args
;
605 struct nfs4_sequence_res
*seq_res
;
609 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
611 struct nfs41_call_sync_data
*data
= calldata
;
613 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
615 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
616 data
->seq_res
, data
->cache_reply
, task
))
618 rpc_call_start(task
);
621 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
623 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
624 nfs41_call_sync_prepare(task
, calldata
);
627 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
629 struct nfs41_call_sync_data
*data
= calldata
;
631 nfs41_sequence_done(task
, data
->seq_res
);
634 struct rpc_call_ops nfs41_call_sync_ops
= {
635 .rpc_call_prepare
= nfs41_call_sync_prepare
,
636 .rpc_call_done
= nfs41_call_sync_done
,
639 struct rpc_call_ops nfs41_call_priv_sync_ops
= {
640 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
641 .rpc_call_done
= nfs41_call_sync_done
,
644 static int nfs4_call_sync_sequence(struct nfs_server
*server
,
645 struct rpc_message
*msg
,
646 struct nfs4_sequence_args
*args
,
647 struct nfs4_sequence_res
*res
,
652 struct rpc_task
*task
;
653 struct nfs41_call_sync_data data
= {
654 .seq_server
= server
,
657 .cache_reply
= cache_reply
,
659 struct rpc_task_setup task_setup
= {
660 .rpc_client
= server
->client
,
662 .callback_ops
= &nfs41_call_sync_ops
,
663 .callback_data
= &data
668 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
669 task
= rpc_run_task(&task_setup
);
673 ret
= task
->tk_status
;
679 int _nfs4_call_sync_session(struct nfs_server
*server
,
680 struct rpc_message
*msg
,
681 struct nfs4_sequence_args
*args
,
682 struct nfs4_sequence_res
*res
,
685 return nfs4_call_sync_sequence(server
, msg
, args
, res
, cache_reply
, 0);
689 static int nfs4_sequence_done(struct rpc_task
*task
,
690 struct nfs4_sequence_res
*res
)
694 #endif /* CONFIG_NFS_V4_1 */
696 int _nfs4_call_sync(struct nfs_server
*server
,
697 struct rpc_message
*msg
,
698 struct nfs4_sequence_args
*args
,
699 struct nfs4_sequence_res
*res
,
702 args
->sa_session
= res
->sr_session
= NULL
;
703 return rpc_call_sync(server
->client
, msg
, 0);
706 #define nfs4_call_sync(server, msg, args, res, cache_reply) \
707 (server)->nfs_client->cl_mvops->call_sync((server), (msg), &(args)->seq_args, \
708 &(res)->seq_res, (cache_reply))
710 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
712 struct nfs_inode
*nfsi
= NFS_I(dir
);
714 spin_lock(&dir
->i_lock
);
715 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
716 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
717 nfs_force_lookup_revalidate(dir
);
718 nfsi
->change_attr
= cinfo
->after
;
719 spin_unlock(&dir
->i_lock
);
722 struct nfs4_opendata
{
724 struct nfs_openargs o_arg
;
725 struct nfs_openres o_res
;
726 struct nfs_open_confirmargs c_arg
;
727 struct nfs_open_confirmres c_res
;
728 struct nfs_fattr f_attr
;
729 struct nfs_fattr dir_attr
;
732 struct nfs4_state_owner
*owner
;
733 struct nfs4_state
*state
;
735 unsigned long timestamp
;
736 unsigned int rpc_done
: 1;
742 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
744 p
->o_res
.f_attr
= &p
->f_attr
;
745 p
->o_res
.dir_attr
= &p
->dir_attr
;
746 p
->o_res
.seqid
= p
->o_arg
.seqid
;
747 p
->c_res
.seqid
= p
->c_arg
.seqid
;
748 p
->o_res
.server
= p
->o_arg
.server
;
749 nfs_fattr_init(&p
->f_attr
);
750 nfs_fattr_init(&p
->dir_attr
);
753 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
754 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
755 const struct iattr
*attrs
,
758 struct dentry
*parent
= dget_parent(path
->dentry
);
759 struct inode
*dir
= parent
->d_inode
;
760 struct nfs_server
*server
= NFS_SERVER(dir
);
761 struct nfs4_opendata
*p
;
763 p
= kzalloc(sizeof(*p
), gfp_mask
);
766 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
767 if (p
->o_arg
.seqid
== NULL
)
773 atomic_inc(&sp
->so_count
);
774 p
->o_arg
.fh
= NFS_FH(dir
);
775 p
->o_arg
.open_flags
= flags
;
776 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
777 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
778 p
->o_arg
.id
= sp
->so_owner_id
.id
;
779 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
780 p
->o_arg
.server
= server
;
781 p
->o_arg
.bitmask
= server
->attr_bitmask
;
782 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
783 if (flags
& O_CREAT
) {
786 p
->o_arg
.u
.attrs
= &p
->attrs
;
787 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
788 s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
792 p
->c_arg
.fh
= &p
->o_res
.fh
;
793 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
794 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
795 nfs4_init_opendata_res(p
);
805 static void nfs4_opendata_free(struct kref
*kref
)
807 struct nfs4_opendata
*p
= container_of(kref
,
808 struct nfs4_opendata
, kref
);
810 nfs_free_seqid(p
->o_arg
.seqid
);
811 if (p
->state
!= NULL
)
812 nfs4_put_open_state(p
->state
);
813 nfs4_put_state_owner(p
->owner
);
819 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
822 kref_put(&p
->kref
, nfs4_opendata_free
);
825 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
829 ret
= rpc_wait_for_completion_task(task
);
833 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
837 if (open_mode
& O_EXCL
)
839 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
841 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
842 && state
->n_rdonly
!= 0;
845 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
846 && state
->n_wronly
!= 0;
848 case FMODE_READ
|FMODE_WRITE
:
849 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
850 && state
->n_rdwr
!= 0;
856 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
858 if ((delegation
->type
& fmode
) != fmode
)
860 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
862 nfs_mark_delegation_referenced(delegation
);
866 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
875 case FMODE_READ
|FMODE_WRITE
:
878 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
881 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
883 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
884 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
885 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
888 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
891 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
893 case FMODE_READ
|FMODE_WRITE
:
894 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
898 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
900 write_seqlock(&state
->seqlock
);
901 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
902 write_sequnlock(&state
->seqlock
);
905 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
908 * Protect the call to nfs4_state_set_mode_locked and
909 * serialise the stateid update
911 write_seqlock(&state
->seqlock
);
912 if (deleg_stateid
!= NULL
) {
913 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
914 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
916 if (open_stateid
!= NULL
)
917 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
918 write_sequnlock(&state
->seqlock
);
919 spin_lock(&state
->owner
->so_lock
);
920 update_open_stateflags(state
, fmode
);
921 spin_unlock(&state
->owner
->so_lock
);
924 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
926 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
927 struct nfs_delegation
*deleg_cur
;
930 fmode
&= (FMODE_READ
|FMODE_WRITE
);
933 deleg_cur
= rcu_dereference(nfsi
->delegation
);
934 if (deleg_cur
== NULL
)
937 spin_lock(&deleg_cur
->lock
);
938 if (nfsi
->delegation
!= deleg_cur
||
939 (deleg_cur
->type
& fmode
) != fmode
)
940 goto no_delegation_unlock
;
942 if (delegation
== NULL
)
943 delegation
= &deleg_cur
->stateid
;
944 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
945 goto no_delegation_unlock
;
947 nfs_mark_delegation_referenced(deleg_cur
);
948 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
950 no_delegation_unlock
:
951 spin_unlock(&deleg_cur
->lock
);
955 if (!ret
&& open_stateid
!= NULL
) {
956 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
964 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
966 struct nfs_delegation
*delegation
;
969 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
970 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
975 nfs_inode_return_delegation(inode
);
978 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
980 struct nfs4_state
*state
= opendata
->state
;
981 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
982 struct nfs_delegation
*delegation
;
983 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
984 fmode_t fmode
= opendata
->o_arg
.fmode
;
985 nfs4_stateid stateid
;
989 if (can_open_cached(state
, fmode
, open_mode
)) {
990 spin_lock(&state
->owner
->so_lock
);
991 if (can_open_cached(state
, fmode
, open_mode
)) {
992 update_open_stateflags(state
, fmode
);
993 spin_unlock(&state
->owner
->so_lock
);
994 goto out_return_state
;
996 spin_unlock(&state
->owner
->so_lock
);
999 delegation
= rcu_dereference(nfsi
->delegation
);
1000 if (delegation
== NULL
||
1001 !can_open_delegated(delegation
, fmode
)) {
1005 /* Save the delegation */
1006 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
1008 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1013 /* Try to update the stateid using the delegation */
1014 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1015 goto out_return_state
;
1018 return ERR_PTR(ret
);
1020 atomic_inc(&state
->count
);
1024 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1026 struct inode
*inode
;
1027 struct nfs4_state
*state
= NULL
;
1028 struct nfs_delegation
*delegation
;
1031 if (!data
->rpc_done
) {
1032 state
= nfs4_try_open_cached(data
);
1037 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1039 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1040 ret
= PTR_ERR(inode
);
1044 state
= nfs4_get_open_state(inode
, data
->owner
);
1047 if (data
->o_res
.delegation_type
!= 0) {
1048 int delegation_flags
= 0;
1051 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1053 delegation_flags
= delegation
->flags
;
1055 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1056 nfs_inode_set_delegation(state
->inode
,
1057 data
->owner
->so_cred
,
1060 nfs_inode_reclaim_delegation(state
->inode
,
1061 data
->owner
->so_cred
,
1065 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1073 return ERR_PTR(ret
);
1076 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1078 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1079 struct nfs_open_context
*ctx
;
1081 spin_lock(&state
->inode
->i_lock
);
1082 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1083 if (ctx
->state
!= state
)
1085 get_nfs_open_context(ctx
);
1086 spin_unlock(&state
->inode
->i_lock
);
1089 spin_unlock(&state
->inode
->i_lock
);
1090 return ERR_PTR(-ENOENT
);
1093 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1095 struct nfs4_opendata
*opendata
;
1097 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1098 if (opendata
== NULL
)
1099 return ERR_PTR(-ENOMEM
);
1100 opendata
->state
= state
;
1101 atomic_inc(&state
->count
);
1105 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1107 struct nfs4_state
*newstate
;
1110 opendata
->o_arg
.open_flags
= 0;
1111 opendata
->o_arg
.fmode
= fmode
;
1112 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1113 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1114 nfs4_init_opendata_res(opendata
);
1115 ret
= _nfs4_recover_proc_open(opendata
);
1118 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1119 if (IS_ERR(newstate
))
1120 return PTR_ERR(newstate
);
1121 nfs4_close_state(&opendata
->path
, newstate
, fmode
);
1126 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1128 struct nfs4_state
*newstate
;
1131 /* memory barrier prior to reading state->n_* */
1132 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1134 if (state
->n_rdwr
!= 0) {
1135 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1136 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1139 if (newstate
!= state
)
1142 if (state
->n_wronly
!= 0) {
1143 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1144 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1147 if (newstate
!= state
)
1150 if (state
->n_rdonly
!= 0) {
1151 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1152 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1155 if (newstate
!= state
)
1159 * We may have performed cached opens for all three recoveries.
1160 * Check if we need to update the current stateid.
1162 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1163 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1164 write_seqlock(&state
->seqlock
);
1165 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1166 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1167 write_sequnlock(&state
->seqlock
);
1174 * reclaim state on the server after a reboot.
1176 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1178 struct nfs_delegation
*delegation
;
1179 struct nfs4_opendata
*opendata
;
1180 fmode_t delegation_type
= 0;
1183 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1184 if (IS_ERR(opendata
))
1185 return PTR_ERR(opendata
);
1186 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1187 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1189 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1190 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1191 delegation_type
= delegation
->type
;
1193 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1194 status
= nfs4_open_recover(opendata
, state
);
1195 nfs4_opendata_put(opendata
);
1199 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1201 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1202 struct nfs4_exception exception
= { };
1205 err
= _nfs4_do_open_reclaim(ctx
, state
);
1206 if (err
!= -NFS4ERR_DELAY
)
1208 nfs4_handle_exception(server
, err
, &exception
);
1209 } while (exception
.retry
);
1213 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1215 struct nfs_open_context
*ctx
;
1218 ctx
= nfs4_state_find_open_context(state
);
1220 return PTR_ERR(ctx
);
1221 ret
= nfs4_do_open_reclaim(ctx
, state
);
1222 put_nfs_open_context(ctx
);
1226 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1228 struct nfs4_opendata
*opendata
;
1231 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1232 if (IS_ERR(opendata
))
1233 return PTR_ERR(opendata
);
1234 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1235 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1236 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1237 ret
= nfs4_open_recover(opendata
, state
);
1238 nfs4_opendata_put(opendata
);
1242 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1244 struct nfs4_exception exception
= { };
1245 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1248 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1254 case -NFS4ERR_BADSESSION
:
1255 case -NFS4ERR_BADSLOT
:
1256 case -NFS4ERR_BAD_HIGH_SLOT
:
1257 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1258 case -NFS4ERR_DEADSESSION
:
1259 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
1261 case -NFS4ERR_STALE_CLIENTID
:
1262 case -NFS4ERR_STALE_STATEID
:
1263 case -NFS4ERR_EXPIRED
:
1264 /* Don't recall a delegation if it was lost */
1265 nfs4_schedule_lease_recovery(server
->nfs_client
);
1269 * The show must go on: exit, but mark the
1270 * stateid as needing recovery.
1272 case -NFS4ERR_ADMIN_REVOKED
:
1273 case -NFS4ERR_BAD_STATEID
:
1274 nfs4_schedule_stateid_recovery(server
, state
);
1277 * User RPCSEC_GSS context has expired.
1278 * We cannot recover this stateid now, so
1279 * skip it and allow recovery thread to
1286 err
= nfs4_handle_exception(server
, err
, &exception
);
1287 } while (exception
.retry
);
1292 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1294 struct nfs4_opendata
*data
= calldata
;
1296 data
->rpc_status
= task
->tk_status
;
1297 if (data
->rpc_status
== 0) {
1298 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1299 sizeof(data
->o_res
.stateid
.data
));
1300 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1301 renew_lease(data
->o_res
.server
, data
->timestamp
);
1306 static void nfs4_open_confirm_release(void *calldata
)
1308 struct nfs4_opendata
*data
= calldata
;
1309 struct nfs4_state
*state
= NULL
;
1311 /* If this request hasn't been cancelled, do nothing */
1312 if (data
->cancelled
== 0)
1314 /* In case of error, no cleanup! */
1315 if (!data
->rpc_done
)
1317 state
= nfs4_opendata_to_nfs4_state(data
);
1319 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1321 nfs4_opendata_put(data
);
1324 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1325 .rpc_call_done
= nfs4_open_confirm_done
,
1326 .rpc_release
= nfs4_open_confirm_release
,
1330 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1332 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1334 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1335 struct rpc_task
*task
;
1336 struct rpc_message msg
= {
1337 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1338 .rpc_argp
= &data
->c_arg
,
1339 .rpc_resp
= &data
->c_res
,
1340 .rpc_cred
= data
->owner
->so_cred
,
1342 struct rpc_task_setup task_setup_data
= {
1343 .rpc_client
= server
->client
,
1344 .rpc_message
= &msg
,
1345 .callback_ops
= &nfs4_open_confirm_ops
,
1346 .callback_data
= data
,
1347 .workqueue
= nfsiod_workqueue
,
1348 .flags
= RPC_TASK_ASYNC
,
1352 kref_get(&data
->kref
);
1354 data
->rpc_status
= 0;
1355 data
->timestamp
= jiffies
;
1356 task
= rpc_run_task(&task_setup_data
);
1358 return PTR_ERR(task
);
1359 status
= nfs4_wait_for_completion_rpc_task(task
);
1361 data
->cancelled
= 1;
1364 status
= data
->rpc_status
;
1369 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1371 struct nfs4_opendata
*data
= calldata
;
1372 struct nfs4_state_owner
*sp
= data
->owner
;
1374 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1377 * Check if we still need to send an OPEN call, or if we can use
1378 * a delegation instead.
1380 if (data
->state
!= NULL
) {
1381 struct nfs_delegation
*delegation
;
1383 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1386 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1387 if (delegation
!= NULL
&&
1388 test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) == 0) {
1394 /* Update sequence id. */
1395 data
->o_arg
.id
= sp
->so_owner_id
.id
;
1396 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1397 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1398 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1399 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1401 data
->timestamp
= jiffies
;
1402 if (nfs4_setup_sequence(data
->o_arg
.server
,
1403 &data
->o_arg
.seq_args
,
1404 &data
->o_res
.seq_res
, 1, task
))
1406 rpc_call_start(task
);
1409 task
->tk_action
= NULL
;
1413 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1415 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1416 nfs4_open_prepare(task
, calldata
);
1419 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1421 struct nfs4_opendata
*data
= calldata
;
1423 data
->rpc_status
= task
->tk_status
;
1425 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1428 if (task
->tk_status
== 0) {
1429 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1433 data
->rpc_status
= -ELOOP
;
1436 data
->rpc_status
= -EISDIR
;
1439 data
->rpc_status
= -ENOTDIR
;
1441 renew_lease(data
->o_res
.server
, data
->timestamp
);
1442 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1443 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1448 static void nfs4_open_release(void *calldata
)
1450 struct nfs4_opendata
*data
= calldata
;
1451 struct nfs4_state
*state
= NULL
;
1453 /* If this request hasn't been cancelled, do nothing */
1454 if (data
->cancelled
== 0)
1456 /* In case of error, no cleanup! */
1457 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1459 /* In case we need an open_confirm, no cleanup! */
1460 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1462 state
= nfs4_opendata_to_nfs4_state(data
);
1464 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1466 nfs4_opendata_put(data
);
1469 static const struct rpc_call_ops nfs4_open_ops
= {
1470 .rpc_call_prepare
= nfs4_open_prepare
,
1471 .rpc_call_done
= nfs4_open_done
,
1472 .rpc_release
= nfs4_open_release
,
1475 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1476 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1477 .rpc_call_done
= nfs4_open_done
,
1478 .rpc_release
= nfs4_open_release
,
1481 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1483 struct inode
*dir
= data
->dir
->d_inode
;
1484 struct nfs_server
*server
= NFS_SERVER(dir
);
1485 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1486 struct nfs_openres
*o_res
= &data
->o_res
;
1487 struct rpc_task
*task
;
1488 struct rpc_message msg
= {
1489 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1492 .rpc_cred
= data
->owner
->so_cred
,
1494 struct rpc_task_setup task_setup_data
= {
1495 .rpc_client
= server
->client
,
1496 .rpc_message
= &msg
,
1497 .callback_ops
= &nfs4_open_ops
,
1498 .callback_data
= data
,
1499 .workqueue
= nfsiod_workqueue
,
1500 .flags
= RPC_TASK_ASYNC
,
1504 kref_get(&data
->kref
);
1506 data
->rpc_status
= 0;
1507 data
->cancelled
= 0;
1509 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1510 task
= rpc_run_task(&task_setup_data
);
1512 return PTR_ERR(task
);
1513 status
= nfs4_wait_for_completion_rpc_task(task
);
1515 data
->cancelled
= 1;
1518 status
= data
->rpc_status
;
1524 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1526 struct inode
*dir
= data
->dir
->d_inode
;
1527 struct nfs_openres
*o_res
= &data
->o_res
;
1530 status
= nfs4_run_open_task(data
, 1);
1531 if (status
!= 0 || !data
->rpc_done
)
1534 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1536 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1537 status
= _nfs4_proc_open_confirm(data
);
1546 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1548 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1550 struct inode
*dir
= data
->dir
->d_inode
;
1551 struct nfs_server
*server
= NFS_SERVER(dir
);
1552 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1553 struct nfs_openres
*o_res
= &data
->o_res
;
1556 status
= nfs4_run_open_task(data
, 0);
1557 if (status
!= 0 || !data
->rpc_done
)
1560 if (o_arg
->open_flags
& O_CREAT
) {
1561 update_changeattr(dir
, &o_res
->cinfo
);
1562 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1564 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1565 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1566 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1567 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1568 status
= _nfs4_proc_open_confirm(data
);
1572 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1573 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1577 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1582 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1583 ret
= nfs4_wait_clnt_recover(clp
);
1586 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1587 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1589 nfs4_schedule_state_manager(clp
);
1595 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1597 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1602 * reclaim state on the server after a network partition.
1603 * Assumes caller holds the appropriate lock
1605 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1607 struct nfs4_opendata
*opendata
;
1610 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1611 if (IS_ERR(opendata
))
1612 return PTR_ERR(opendata
);
1613 ret
= nfs4_open_recover(opendata
, state
);
1615 d_drop(ctx
->path
.dentry
);
1616 nfs4_opendata_put(opendata
);
1620 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1622 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1623 struct nfs4_exception exception
= { };
1627 err
= _nfs4_open_expired(ctx
, state
);
1631 case -NFS4ERR_GRACE
:
1632 case -NFS4ERR_DELAY
:
1633 nfs4_handle_exception(server
, err
, &exception
);
1636 } while (exception
.retry
);
1641 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1643 struct nfs_open_context
*ctx
;
1646 ctx
= nfs4_state_find_open_context(state
);
1648 return PTR_ERR(ctx
);
1649 ret
= nfs4_do_open_expired(ctx
, state
);
1650 put_nfs_open_context(ctx
);
1655 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1656 * fields corresponding to attributes that were used to store the verifier.
1657 * Make sure we clobber those fields in the later setattr call
1659 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1661 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1662 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1663 sattr
->ia_valid
|= ATTR_ATIME
;
1665 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1666 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1667 sattr
->ia_valid
|= ATTR_MTIME
;
1671 * Returns a referenced nfs4_state
1673 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
)
1675 struct nfs4_state_owner
*sp
;
1676 struct nfs4_state
*state
= NULL
;
1677 struct nfs_server
*server
= NFS_SERVER(dir
);
1678 struct nfs4_opendata
*opendata
;
1681 /* Protect against reboot recovery conflicts */
1683 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1684 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1687 status
= nfs4_recover_expired_lease(server
);
1689 goto err_put_state_owner
;
1690 if (path
->dentry
->d_inode
!= NULL
)
1691 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, fmode
);
1693 opendata
= nfs4_opendata_alloc(path
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1694 if (opendata
== NULL
)
1695 goto err_put_state_owner
;
1697 if (path
->dentry
->d_inode
!= NULL
)
1698 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1700 status
= _nfs4_proc_open(opendata
);
1702 goto err_opendata_put
;
1704 state
= nfs4_opendata_to_nfs4_state(opendata
);
1705 status
= PTR_ERR(state
);
1707 goto err_opendata_put
;
1708 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1709 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1711 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1712 nfs4_exclusive_attrset(opendata
, sattr
);
1714 nfs_fattr_init(opendata
->o_res
.f_attr
);
1715 status
= nfs4_do_setattr(state
->inode
, cred
,
1716 opendata
->o_res
.f_attr
, sattr
,
1719 nfs_setattr_update_inode(state
->inode
, sattr
);
1720 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1722 nfs4_opendata_put(opendata
);
1723 nfs4_put_state_owner(sp
);
1727 nfs4_opendata_put(opendata
);
1728 err_put_state_owner
:
1729 nfs4_put_state_owner(sp
);
1736 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
)
1738 struct nfs4_exception exception
= { };
1739 struct nfs4_state
*res
;
1743 status
= _nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
, &res
);
1746 /* NOTE: BAD_SEQID means the server and client disagree about the
1747 * book-keeping w.r.t. state-changing operations
1748 * (OPEN/CLOSE/LOCK/LOCKU...)
1749 * It is actually a sign of a bug on the client or on the server.
1751 * If we receive a BAD_SEQID error in the particular case of
1752 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1753 * have unhashed the old state_owner for us, and that we can
1754 * therefore safely retry using a new one. We should still warn
1755 * the user though...
1757 if (status
== -NFS4ERR_BAD_SEQID
) {
1758 printk(KERN_WARNING
"NFS: v4 server %s "
1759 " returned a bad sequence-id error!\n",
1760 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1761 exception
.retry
= 1;
1765 * BAD_STATEID on OPEN means that the server cancelled our
1766 * state before it received the OPEN_CONFIRM.
1767 * Recover by retrying the request as per the discussion
1768 * on Page 181 of RFC3530.
1770 if (status
== -NFS4ERR_BAD_STATEID
) {
1771 exception
.retry
= 1;
1774 if (status
== -EAGAIN
) {
1775 /* We must have found a delegation */
1776 exception
.retry
= 1;
1779 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1780 status
, &exception
));
1781 } while (exception
.retry
);
1785 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1786 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1787 struct nfs4_state
*state
)
1789 struct nfs_server
*server
= NFS_SERVER(inode
);
1790 struct nfs_setattrargs arg
= {
1791 .fh
= NFS_FH(inode
),
1794 .bitmask
= server
->attr_bitmask
,
1796 struct nfs_setattrres res
= {
1800 struct rpc_message msg
= {
1801 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1806 unsigned long timestamp
= jiffies
;
1809 nfs_fattr_init(fattr
);
1811 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1812 /* Use that stateid */
1813 } else if (state
!= NULL
) {
1814 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
, current
->tgid
);
1816 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1818 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
1819 if (status
== 0 && state
!= NULL
)
1820 renew_lease(server
, timestamp
);
1824 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1825 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1826 struct nfs4_state
*state
)
1828 struct nfs_server
*server
= NFS_SERVER(inode
);
1829 struct nfs4_exception exception
= { };
1832 err
= nfs4_handle_exception(server
,
1833 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1835 } while (exception
.retry
);
1839 struct nfs4_closedata
{
1841 struct inode
*inode
;
1842 struct nfs4_state
*state
;
1843 struct nfs_closeargs arg
;
1844 struct nfs_closeres res
;
1845 struct nfs_fattr fattr
;
1846 unsigned long timestamp
;
1851 static void nfs4_free_closedata(void *data
)
1853 struct nfs4_closedata
*calldata
= data
;
1854 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1857 pnfs_roc_release(calldata
->state
->inode
);
1858 nfs4_put_open_state(calldata
->state
);
1859 nfs_free_seqid(calldata
->arg
.seqid
);
1860 nfs4_put_state_owner(sp
);
1861 path_put(&calldata
->path
);
1865 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
1868 spin_lock(&state
->owner
->so_lock
);
1869 if (!(fmode
& FMODE_READ
))
1870 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1871 if (!(fmode
& FMODE_WRITE
))
1872 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1873 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1874 spin_unlock(&state
->owner
->so_lock
);
1877 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1879 struct nfs4_closedata
*calldata
= data
;
1880 struct nfs4_state
*state
= calldata
->state
;
1881 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1883 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
1885 /* hmm. we are done with the inode, and in the process of freeing
1886 * the state_owner. we keep this around to process errors
1888 switch (task
->tk_status
) {
1891 pnfs_roc_set_barrier(state
->inode
,
1892 calldata
->roc_barrier
);
1893 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1894 renew_lease(server
, calldata
->timestamp
);
1895 nfs4_close_clear_stateid_flags(state
,
1896 calldata
->arg
.fmode
);
1898 case -NFS4ERR_STALE_STATEID
:
1899 case -NFS4ERR_OLD_STATEID
:
1900 case -NFS4ERR_BAD_STATEID
:
1901 case -NFS4ERR_EXPIRED
:
1902 if (calldata
->arg
.fmode
== 0)
1905 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
1906 rpc_restart_call_prepare(task
);
1908 nfs_release_seqid(calldata
->arg
.seqid
);
1909 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1912 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1914 struct nfs4_closedata
*calldata
= data
;
1915 struct nfs4_state
*state
= calldata
->state
;
1918 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1921 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1922 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
1923 spin_lock(&state
->owner
->so_lock
);
1924 /* Calculate the change in open mode */
1925 if (state
->n_rdwr
== 0) {
1926 if (state
->n_rdonly
== 0) {
1927 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1928 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1929 calldata
->arg
.fmode
&= ~FMODE_READ
;
1931 if (state
->n_wronly
== 0) {
1932 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1933 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1934 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
1937 spin_unlock(&state
->owner
->so_lock
);
1940 /* Note: exit _without_ calling nfs4_close_done */
1941 task
->tk_action
= NULL
;
1945 if (calldata
->arg
.fmode
== 0) {
1946 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
1947 if (calldata
->roc
&&
1948 pnfs_roc_drain(calldata
->inode
, &calldata
->roc_barrier
)) {
1949 rpc_sleep_on(&NFS_SERVER(calldata
->inode
)->roc_rpcwaitq
,
1955 nfs_fattr_init(calldata
->res
.fattr
);
1956 calldata
->timestamp
= jiffies
;
1957 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
1958 &calldata
->arg
.seq_args
, &calldata
->res
.seq_res
,
1961 rpc_call_start(task
);
1964 static const struct rpc_call_ops nfs4_close_ops
= {
1965 .rpc_call_prepare
= nfs4_close_prepare
,
1966 .rpc_call_done
= nfs4_close_done
,
1967 .rpc_release
= nfs4_free_closedata
,
1971 * It is possible for data to be read/written from a mem-mapped file
1972 * after the sys_close call (which hits the vfs layer as a flush).
1973 * This means that we can't safely call nfsv4 close on a file until
1974 * the inode is cleared. This in turn means that we are not good
1975 * NFSv4 citizens - we do not indicate to the server to update the file's
1976 * share state even when we are done with one of the three share
1977 * stateid's in the inode.
1979 * NOTE: Caller must be holding the sp->so_owner semaphore!
1981 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
, bool roc
)
1983 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1984 struct nfs4_closedata
*calldata
;
1985 struct nfs4_state_owner
*sp
= state
->owner
;
1986 struct rpc_task
*task
;
1987 struct rpc_message msg
= {
1988 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1989 .rpc_cred
= state
->owner
->so_cred
,
1991 struct rpc_task_setup task_setup_data
= {
1992 .rpc_client
= server
->client
,
1993 .rpc_message
= &msg
,
1994 .callback_ops
= &nfs4_close_ops
,
1995 .workqueue
= nfsiod_workqueue
,
1996 .flags
= RPC_TASK_ASYNC
,
1998 int status
= -ENOMEM
;
2000 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2001 if (calldata
== NULL
)
2003 calldata
->inode
= state
->inode
;
2004 calldata
->state
= state
;
2005 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2006 calldata
->arg
.stateid
= &state
->open_stateid
;
2007 /* Serialization for the sequence id */
2008 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2009 if (calldata
->arg
.seqid
== NULL
)
2010 goto out_free_calldata
;
2011 calldata
->arg
.fmode
= 0;
2012 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2013 calldata
->res
.fattr
= &calldata
->fattr
;
2014 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2015 calldata
->res
.server
= server
;
2016 calldata
->roc
= roc
;
2018 calldata
->path
= *path
;
2020 msg
.rpc_argp
= &calldata
->arg
;
2021 msg
.rpc_resp
= &calldata
->res
;
2022 task_setup_data
.callback_data
= calldata
;
2023 task
= rpc_run_task(&task_setup_data
);
2025 return PTR_ERR(task
);
2028 status
= rpc_wait_for_completion_task(task
);
2035 pnfs_roc_release(state
->inode
);
2036 nfs4_put_open_state(state
);
2037 nfs4_put_state_owner(sp
);
2041 static struct inode
*
2042 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2044 struct nfs4_state
*state
;
2046 /* Protect against concurrent sillydeletes */
2047 state
= nfs4_do_open(dir
, &ctx
->path
, ctx
->mode
, open_flags
, attr
, ctx
->cred
);
2049 return ERR_CAST(state
);
2051 return igrab(state
->inode
);
2054 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2056 if (ctx
->state
== NULL
)
2059 nfs4_close_sync(&ctx
->path
, ctx
->state
, ctx
->mode
);
2061 nfs4_close_state(&ctx
->path
, ctx
->state
, ctx
->mode
);
2064 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2066 struct nfs4_server_caps_arg args
= {
2069 struct nfs4_server_caps_res res
= {};
2070 struct rpc_message msg
= {
2071 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2077 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2079 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2080 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2081 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2082 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2083 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2084 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2085 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2086 server
->caps
|= NFS_CAP_ACLS
;
2087 if (res
.has_links
!= 0)
2088 server
->caps
|= NFS_CAP_HARDLINKS
;
2089 if (res
.has_symlinks
!= 0)
2090 server
->caps
|= NFS_CAP_SYMLINKS
;
2091 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2092 server
->caps
|= NFS_CAP_FILEID
;
2093 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2094 server
->caps
|= NFS_CAP_MODE
;
2095 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2096 server
->caps
|= NFS_CAP_NLINK
;
2097 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2098 server
->caps
|= NFS_CAP_OWNER
;
2099 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2100 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2101 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2102 server
->caps
|= NFS_CAP_ATIME
;
2103 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2104 server
->caps
|= NFS_CAP_CTIME
;
2105 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2106 server
->caps
|= NFS_CAP_MTIME
;
2108 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2109 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2110 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2111 server
->acl_bitmask
= res
.acl_bitmask
;
2117 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2119 struct nfs4_exception exception
= { };
2122 err
= nfs4_handle_exception(server
,
2123 _nfs4_server_capabilities(server
, fhandle
),
2125 } while (exception
.retry
);
2129 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2130 struct nfs_fsinfo
*info
)
2132 struct nfs4_lookup_root_arg args
= {
2133 .bitmask
= nfs4_fattr_bitmap
,
2135 struct nfs4_lookup_res res
= {
2137 .fattr
= info
->fattr
,
2140 struct rpc_message msg
= {
2141 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2146 nfs_fattr_init(info
->fattr
);
2147 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2150 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2151 struct nfs_fsinfo
*info
)
2153 struct nfs4_exception exception
= { };
2156 err
= nfs4_handle_exception(server
,
2157 _nfs4_lookup_root(server
, fhandle
, info
),
2159 } while (exception
.retry
);
2164 * get the file handle for the "/" directory on the server
2166 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2167 struct nfs_fsinfo
*info
)
2171 status
= nfs4_lookup_root(server
, fhandle
, info
);
2173 status
= nfs4_server_capabilities(server
, fhandle
);
2175 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2176 return nfs4_map_errors(status
);
2180 * Get locations and (maybe) other attributes of a referral.
2181 * Note that we'll actually follow the referral later when
2182 * we detect fsid mismatch in inode revalidation
2184 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2186 int status
= -ENOMEM
;
2187 struct page
*page
= NULL
;
2188 struct nfs4_fs_locations
*locations
= NULL
;
2190 page
= alloc_page(GFP_KERNEL
);
2193 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2194 if (locations
== NULL
)
2197 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2200 /* Make sure server returned a different fsid for the referral */
2201 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2202 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__
, name
->name
);
2207 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2208 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
2210 fattr
->mode
= S_IFDIR
;
2211 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2219 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2221 struct nfs4_getattr_arg args
= {
2223 .bitmask
= server
->attr_bitmask
,
2225 struct nfs4_getattr_res res
= {
2229 struct rpc_message msg
= {
2230 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2235 nfs_fattr_init(fattr
);
2236 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2239 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2241 struct nfs4_exception exception
= { };
2244 err
= nfs4_handle_exception(server
,
2245 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2247 } while (exception
.retry
);
2252 * The file is not closed if it is opened due to the a request to change
2253 * the size of the file. The open call will not be needed once the
2254 * VFS layer lookup-intents are implemented.
2256 * Close is called when the inode is destroyed.
2257 * If we haven't opened the file for O_WRONLY, we
2258 * need to in the size_change case to obtain a stateid.
2261 * Because OPEN is always done by name in nfsv4, it is
2262 * possible that we opened a different file by the same
2263 * name. We can recognize this race condition, but we
2264 * can't do anything about it besides returning an error.
2266 * This will be fixed with VFS changes (lookup-intent).
2269 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2270 struct iattr
*sattr
)
2272 struct inode
*inode
= dentry
->d_inode
;
2273 struct rpc_cred
*cred
= NULL
;
2274 struct nfs4_state
*state
= NULL
;
2277 nfs_fattr_init(fattr
);
2279 /* Search for an existing open(O_WRITE) file */
2280 if (sattr
->ia_valid
& ATTR_FILE
) {
2281 struct nfs_open_context
*ctx
;
2283 ctx
= nfs_file_open_context(sattr
->ia_file
);
2290 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2292 nfs_setattr_update_inode(inode
, sattr
);
2296 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
2297 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2298 struct nfs_fattr
*fattr
)
2301 struct nfs4_lookup_arg args
= {
2302 .bitmask
= server
->attr_bitmask
,
2306 struct nfs4_lookup_res res
= {
2311 struct rpc_message msg
= {
2312 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2317 nfs_fattr_init(fattr
);
2319 dprintk("NFS call lookupfh %s\n", name
->name
);
2320 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2321 dprintk("NFS reply lookupfh: %d\n", status
);
2325 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
2326 struct qstr
*name
, struct nfs_fh
*fhandle
,
2327 struct nfs_fattr
*fattr
)
2329 struct nfs4_exception exception
= { };
2332 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
2334 if (err
== -NFS4ERR_MOVED
) {
2338 err
= nfs4_handle_exception(server
, err
, &exception
);
2339 } while (exception
.retry
);
2343 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
2344 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2348 dprintk("NFS call lookup %s\n", name
->name
);
2349 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
2350 if (status
== -NFS4ERR_MOVED
)
2351 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2352 dprintk("NFS reply lookup: %d\n", status
);
2356 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2358 struct nfs4_exception exception
= { };
2361 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2362 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
2364 } while (exception
.retry
);
2368 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2370 struct nfs_server
*server
= NFS_SERVER(inode
);
2371 struct nfs4_accessargs args
= {
2372 .fh
= NFS_FH(inode
),
2373 .bitmask
= server
->attr_bitmask
,
2375 struct nfs4_accessres res
= {
2378 struct rpc_message msg
= {
2379 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2382 .rpc_cred
= entry
->cred
,
2384 int mode
= entry
->mask
;
2388 * Determine which access bits we want to ask for...
2390 if (mode
& MAY_READ
)
2391 args
.access
|= NFS4_ACCESS_READ
;
2392 if (S_ISDIR(inode
->i_mode
)) {
2393 if (mode
& MAY_WRITE
)
2394 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2395 if (mode
& MAY_EXEC
)
2396 args
.access
|= NFS4_ACCESS_LOOKUP
;
2398 if (mode
& MAY_WRITE
)
2399 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2400 if (mode
& MAY_EXEC
)
2401 args
.access
|= NFS4_ACCESS_EXECUTE
;
2404 res
.fattr
= nfs_alloc_fattr();
2405 if (res
.fattr
== NULL
)
2408 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2411 if (res
.access
& NFS4_ACCESS_READ
)
2412 entry
->mask
|= MAY_READ
;
2413 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2414 entry
->mask
|= MAY_WRITE
;
2415 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2416 entry
->mask
|= MAY_EXEC
;
2417 nfs_refresh_inode(inode
, res
.fattr
);
2419 nfs_free_fattr(res
.fattr
);
2423 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2425 struct nfs4_exception exception
= { };
2428 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2429 _nfs4_proc_access(inode
, entry
),
2431 } while (exception
.retry
);
2436 * TODO: For the time being, we don't try to get any attributes
2437 * along with any of the zero-copy operations READ, READDIR,
2440 * In the case of the first three, we want to put the GETATTR
2441 * after the read-type operation -- this is because it is hard
2442 * to predict the length of a GETATTR response in v4, and thus
2443 * align the READ data correctly. This means that the GETATTR
2444 * may end up partially falling into the page cache, and we should
2445 * shift it into the 'tail' of the xdr_buf before processing.
2446 * To do this efficiently, we need to know the total length
2447 * of data received, which doesn't seem to be available outside
2450 * In the case of WRITE, we also want to put the GETATTR after
2451 * the operation -- in this case because we want to make sure
2452 * we get the post-operation mtime and size. This means that
2453 * we can't use xdr_encode_pages() as written: we need a variant
2454 * of it which would leave room in the 'tail' iovec.
2456 * Both of these changes to the XDR layer would in fact be quite
2457 * minor, but I decided to leave them for a subsequent patch.
2459 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2460 unsigned int pgbase
, unsigned int pglen
)
2462 struct nfs4_readlink args
= {
2463 .fh
= NFS_FH(inode
),
2468 struct nfs4_readlink_res res
;
2469 struct rpc_message msg
= {
2470 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2475 return nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
2478 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2479 unsigned int pgbase
, unsigned int pglen
)
2481 struct nfs4_exception exception
= { };
2484 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2485 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2487 } while (exception
.retry
);
2493 * We will need to arrange for the VFS layer to provide an atomic open.
2494 * Until then, this create/open method is prone to inefficiency and race
2495 * conditions due to the lookup, create, and open VFS calls from sys_open()
2496 * placed on the wire.
2498 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2499 * The file will be opened again in the subsequent VFS open call
2500 * (nfs4_proc_file_open).
2502 * The open for read will just hang around to be used by any process that
2503 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2507 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2508 int flags
, struct nfs_open_context
*ctx
)
2510 struct path my_path
= {
2513 struct path
*path
= &my_path
;
2514 struct nfs4_state
*state
;
2515 struct rpc_cred
*cred
= NULL
;
2524 sattr
->ia_mode
&= ~current_umask();
2525 state
= nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
);
2527 if (IS_ERR(state
)) {
2528 status
= PTR_ERR(state
);
2531 d_add(dentry
, igrab(state
->inode
));
2532 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2536 nfs4_close_sync(path
, state
, fmode
);
2541 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2543 struct nfs_server
*server
= NFS_SERVER(dir
);
2544 struct nfs_removeargs args
= {
2546 .name
.len
= name
->len
,
2547 .name
.name
= name
->name
,
2548 .bitmask
= server
->attr_bitmask
,
2550 struct nfs_removeres res
= {
2553 struct rpc_message msg
= {
2554 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2558 int status
= -ENOMEM
;
2560 res
.dir_attr
= nfs_alloc_fattr();
2561 if (res
.dir_attr
== NULL
)
2564 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 1);
2566 update_changeattr(dir
, &res
.cinfo
);
2567 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2569 nfs_free_fattr(res
.dir_attr
);
2574 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2576 struct nfs4_exception exception
= { };
2579 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2580 _nfs4_proc_remove(dir
, name
),
2582 } while (exception
.retry
);
2586 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2588 struct nfs_server
*server
= NFS_SERVER(dir
);
2589 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2590 struct nfs_removeres
*res
= msg
->rpc_resp
;
2592 args
->bitmask
= server
->cache_consistency_bitmask
;
2593 res
->server
= server
;
2594 res
->seq_res
.sr_slot
= NULL
;
2595 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2598 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2600 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2602 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2604 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2606 update_changeattr(dir
, &res
->cinfo
);
2607 nfs_post_op_update_inode(dir
, res
->dir_attr
);
2611 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2613 struct nfs_server
*server
= NFS_SERVER(dir
);
2614 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2615 struct nfs_renameres
*res
= msg
->rpc_resp
;
2617 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2618 arg
->bitmask
= server
->attr_bitmask
;
2619 res
->server
= server
;
2622 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2623 struct inode
*new_dir
)
2625 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2627 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2629 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2632 update_changeattr(old_dir
, &res
->old_cinfo
);
2633 nfs_post_op_update_inode(old_dir
, res
->old_fattr
);
2634 update_changeattr(new_dir
, &res
->new_cinfo
);
2635 nfs_post_op_update_inode(new_dir
, res
->new_fattr
);
2639 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2640 struct inode
*new_dir
, struct qstr
*new_name
)
2642 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2643 struct nfs_renameargs arg
= {
2644 .old_dir
= NFS_FH(old_dir
),
2645 .new_dir
= NFS_FH(new_dir
),
2646 .old_name
= old_name
,
2647 .new_name
= new_name
,
2648 .bitmask
= server
->attr_bitmask
,
2650 struct nfs_renameres res
= {
2653 struct rpc_message msg
= {
2654 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2658 int status
= -ENOMEM
;
2660 res
.old_fattr
= nfs_alloc_fattr();
2661 res
.new_fattr
= nfs_alloc_fattr();
2662 if (res
.old_fattr
== NULL
|| res
.new_fattr
== NULL
)
2665 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2667 update_changeattr(old_dir
, &res
.old_cinfo
);
2668 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2669 update_changeattr(new_dir
, &res
.new_cinfo
);
2670 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2673 nfs_free_fattr(res
.new_fattr
);
2674 nfs_free_fattr(res
.old_fattr
);
2678 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2679 struct inode
*new_dir
, struct qstr
*new_name
)
2681 struct nfs4_exception exception
= { };
2684 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2685 _nfs4_proc_rename(old_dir
, old_name
,
2688 } while (exception
.retry
);
2692 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2694 struct nfs_server
*server
= NFS_SERVER(inode
);
2695 struct nfs4_link_arg arg
= {
2696 .fh
= NFS_FH(inode
),
2697 .dir_fh
= NFS_FH(dir
),
2699 .bitmask
= server
->attr_bitmask
,
2701 struct nfs4_link_res res
= {
2704 struct rpc_message msg
= {
2705 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2709 int status
= -ENOMEM
;
2711 res
.fattr
= nfs_alloc_fattr();
2712 res
.dir_attr
= nfs_alloc_fattr();
2713 if (res
.fattr
== NULL
|| res
.dir_attr
== NULL
)
2716 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2718 update_changeattr(dir
, &res
.cinfo
);
2719 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2720 nfs_post_op_update_inode(inode
, res
.fattr
);
2723 nfs_free_fattr(res
.dir_attr
);
2724 nfs_free_fattr(res
.fattr
);
2728 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2730 struct nfs4_exception exception
= { };
2733 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2734 _nfs4_proc_link(inode
, dir
, name
),
2736 } while (exception
.retry
);
2740 struct nfs4_createdata
{
2741 struct rpc_message msg
;
2742 struct nfs4_create_arg arg
;
2743 struct nfs4_create_res res
;
2745 struct nfs_fattr fattr
;
2746 struct nfs_fattr dir_fattr
;
2749 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2750 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2752 struct nfs4_createdata
*data
;
2754 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2756 struct nfs_server
*server
= NFS_SERVER(dir
);
2758 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2759 data
->msg
.rpc_argp
= &data
->arg
;
2760 data
->msg
.rpc_resp
= &data
->res
;
2761 data
->arg
.dir_fh
= NFS_FH(dir
);
2762 data
->arg
.server
= server
;
2763 data
->arg
.name
= name
;
2764 data
->arg
.attrs
= sattr
;
2765 data
->arg
.ftype
= ftype
;
2766 data
->arg
.bitmask
= server
->attr_bitmask
;
2767 data
->res
.server
= server
;
2768 data
->res
.fh
= &data
->fh
;
2769 data
->res
.fattr
= &data
->fattr
;
2770 data
->res
.dir_fattr
= &data
->dir_fattr
;
2771 nfs_fattr_init(data
->res
.fattr
);
2772 nfs_fattr_init(data
->res
.dir_fattr
);
2777 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2779 int status
= nfs4_call_sync(NFS_SERVER(dir
), &data
->msg
,
2780 &data
->arg
, &data
->res
, 1);
2782 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2783 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2784 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2789 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2794 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2795 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2797 struct nfs4_createdata
*data
;
2798 int status
= -ENAMETOOLONG
;
2800 if (len
> NFS4_MAXPATHLEN
)
2804 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2808 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2809 data
->arg
.u
.symlink
.pages
= &page
;
2810 data
->arg
.u
.symlink
.len
= len
;
2812 status
= nfs4_do_create(dir
, dentry
, data
);
2814 nfs4_free_createdata(data
);
2819 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2820 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2822 struct nfs4_exception exception
= { };
2825 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2826 _nfs4_proc_symlink(dir
, dentry
, page
,
2829 } while (exception
.retry
);
2833 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2834 struct iattr
*sattr
)
2836 struct nfs4_createdata
*data
;
2837 int status
= -ENOMEM
;
2839 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2843 status
= nfs4_do_create(dir
, dentry
, data
);
2845 nfs4_free_createdata(data
);
2850 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2851 struct iattr
*sattr
)
2853 struct nfs4_exception exception
= { };
2856 sattr
->ia_mode
&= ~current_umask();
2858 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2859 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2861 } while (exception
.retry
);
2865 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2866 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
2868 struct inode
*dir
= dentry
->d_inode
;
2869 struct nfs4_readdir_arg args
= {
2874 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2877 struct nfs4_readdir_res res
;
2878 struct rpc_message msg
= {
2879 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2886 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
2887 dentry
->d_parent
->d_name
.name
,
2888 dentry
->d_name
.name
,
2889 (unsigned long long)cookie
);
2890 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2891 res
.pgbase
= args
.pgbase
;
2892 status
= nfs4_call_sync(NFS_SERVER(dir
), &msg
, &args
, &res
, 0);
2894 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2895 status
+= args
.pgbase
;
2898 nfs_invalidate_atime(dir
);
2900 dprintk("%s: returns %d\n", __func__
, status
);
2904 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2905 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
2907 struct nfs4_exception exception
= { };
2910 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2911 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2912 pages
, count
, plus
),
2914 } while (exception
.retry
);
2918 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2919 struct iattr
*sattr
, dev_t rdev
)
2921 struct nfs4_createdata
*data
;
2922 int mode
= sattr
->ia_mode
;
2923 int status
= -ENOMEM
;
2925 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2926 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2928 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
2933 data
->arg
.ftype
= NF4FIFO
;
2934 else if (S_ISBLK(mode
)) {
2935 data
->arg
.ftype
= NF4BLK
;
2936 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2937 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2939 else if (S_ISCHR(mode
)) {
2940 data
->arg
.ftype
= NF4CHR
;
2941 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2942 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2945 status
= nfs4_do_create(dir
, dentry
, data
);
2947 nfs4_free_createdata(data
);
2952 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2953 struct iattr
*sattr
, dev_t rdev
)
2955 struct nfs4_exception exception
= { };
2958 sattr
->ia_mode
&= ~current_umask();
2960 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2961 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2963 } while (exception
.retry
);
2967 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2968 struct nfs_fsstat
*fsstat
)
2970 struct nfs4_statfs_arg args
= {
2972 .bitmask
= server
->attr_bitmask
,
2974 struct nfs4_statfs_res res
= {
2977 struct rpc_message msg
= {
2978 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2983 nfs_fattr_init(fsstat
->fattr
);
2984 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2987 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2989 struct nfs4_exception exception
= { };
2992 err
= nfs4_handle_exception(server
,
2993 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2995 } while (exception
.retry
);
2999 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3000 struct nfs_fsinfo
*fsinfo
)
3002 struct nfs4_fsinfo_arg args
= {
3004 .bitmask
= server
->attr_bitmask
,
3006 struct nfs4_fsinfo_res res
= {
3009 struct rpc_message msg
= {
3010 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3015 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
3018 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3020 struct nfs4_exception exception
= { };
3024 err
= nfs4_handle_exception(server
,
3025 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3027 } while (exception
.retry
);
3031 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3033 nfs_fattr_init(fsinfo
->fattr
);
3034 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3037 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3038 struct nfs_pathconf
*pathconf
)
3040 struct nfs4_pathconf_arg args
= {
3042 .bitmask
= server
->attr_bitmask
,
3044 struct nfs4_pathconf_res res
= {
3045 .pathconf
= pathconf
,
3047 struct rpc_message msg
= {
3048 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3053 /* None of the pathconf attributes are mandatory to implement */
3054 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3055 memset(pathconf
, 0, sizeof(*pathconf
));
3059 nfs_fattr_init(pathconf
->fattr
);
3060 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
3063 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3064 struct nfs_pathconf
*pathconf
)
3066 struct nfs4_exception exception
= { };
3070 err
= nfs4_handle_exception(server
,
3071 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3073 } while (exception
.retry
);
3077 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3079 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3081 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3082 nfs_restart_rpc(task
, server
->nfs_client
);
3086 nfs_invalidate_atime(data
->inode
);
3087 if (task
->tk_status
> 0)
3088 renew_lease(server
, data
->timestamp
);
3092 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3095 dprintk("--> %s\n", __func__
);
3097 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3100 return data
->read_done_cb(task
, data
);
3103 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3105 data
->timestamp
= jiffies
;
3106 data
->read_done_cb
= nfs4_read_done_cb
;
3107 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3110 /* Reset the the nfs_read_data to send the read to the MDS. */
3111 void nfs4_reset_read(struct rpc_task
*task
, struct nfs_read_data
*data
)
3113 dprintk("%s Reset task for i/o through\n", __func__
);
3114 put_lseg(data
->lseg
);
3116 /* offsets will differ in the dense stripe case */
3117 data
->args
.offset
= data
->mds_offset
;
3118 data
->ds_clp
= NULL
;
3119 data
->args
.fh
= NFS_FH(data
->inode
);
3120 data
->read_done_cb
= nfs4_read_done_cb
;
3121 task
->tk_ops
= data
->mds_ops
;
3122 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3124 EXPORT_SYMBOL_GPL(nfs4_reset_read
);
3126 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3128 struct inode
*inode
= data
->inode
;
3130 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3131 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3134 if (task
->tk_status
>= 0) {
3135 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3136 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3141 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3143 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3145 return data
->write_done_cb(task
, data
);
3148 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3150 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3152 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3153 if (!data
->write_done_cb
)
3154 data
->write_done_cb
= nfs4_write_done_cb
;
3155 data
->res
.server
= server
;
3156 data
->timestamp
= jiffies
;
3158 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3161 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3163 struct inode
*inode
= data
->inode
;
3165 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3168 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3169 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3172 nfs_refresh_inode(inode
, data
->res
.fattr
);
3176 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3178 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3180 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3181 data
->res
.server
= server
;
3182 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3185 struct nfs4_renewdata
{
3186 struct nfs_client
*client
;
3187 unsigned long timestamp
;
3191 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3192 * standalone procedure for queueing an asynchronous RENEW.
3194 static void nfs4_renew_release(void *calldata
)
3196 struct nfs4_renewdata
*data
= calldata
;
3197 struct nfs_client
*clp
= data
->client
;
3199 if (atomic_read(&clp
->cl_count
) > 1)
3200 nfs4_schedule_state_renewal(clp
);
3201 nfs_put_client(clp
);
3205 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3207 struct nfs4_renewdata
*data
= calldata
;
3208 struct nfs_client
*clp
= data
->client
;
3209 unsigned long timestamp
= data
->timestamp
;
3211 if (task
->tk_status
< 0) {
3212 /* Unless we're shutting down, schedule state recovery! */
3213 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) != 0)
3214 nfs4_schedule_lease_recovery(clp
);
3217 do_renew_lease(clp
, timestamp
);
3220 static const struct rpc_call_ops nfs4_renew_ops
= {
3221 .rpc_call_done
= nfs4_renew_done
,
3222 .rpc_release
= nfs4_renew_release
,
3225 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3227 struct rpc_message msg
= {
3228 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3232 struct nfs4_renewdata
*data
;
3234 if (!atomic_inc_not_zero(&clp
->cl_count
))
3236 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3240 data
->timestamp
= jiffies
;
3241 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3242 &nfs4_renew_ops
, data
);
3245 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3247 struct rpc_message msg
= {
3248 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3252 unsigned long now
= jiffies
;
3255 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3258 do_renew_lease(clp
, now
);
3262 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3264 return (server
->caps
& NFS_CAP_ACLS
)
3265 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3266 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3269 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3270 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3273 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3275 static void buf_to_pages(const void *buf
, size_t buflen
,
3276 struct page
**pages
, unsigned int *pgbase
)
3278 const void *p
= buf
;
3280 *pgbase
= offset_in_page(buf
);
3282 while (p
< buf
+ buflen
) {
3283 *(pages
++) = virt_to_page(p
);
3284 p
+= PAGE_CACHE_SIZE
;
3288 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3289 struct page
**pages
, unsigned int *pgbase
)
3291 struct page
*newpage
, **spages
;
3297 len
= min_t(size_t, PAGE_CACHE_SIZE
, buflen
);
3298 newpage
= alloc_page(GFP_KERNEL
);
3300 if (newpage
== NULL
)
3302 memcpy(page_address(newpage
), buf
, len
);
3307 } while (buflen
!= 0);
3313 __free_page(spages
[rc
-1]);
3317 struct nfs4_cached_acl
{
3323 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3325 struct nfs_inode
*nfsi
= NFS_I(inode
);
3327 spin_lock(&inode
->i_lock
);
3328 kfree(nfsi
->nfs4_acl
);
3329 nfsi
->nfs4_acl
= acl
;
3330 spin_unlock(&inode
->i_lock
);
3333 static void nfs4_zap_acl_attr(struct inode
*inode
)
3335 nfs4_set_cached_acl(inode
, NULL
);
3338 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3340 struct nfs_inode
*nfsi
= NFS_I(inode
);
3341 struct nfs4_cached_acl
*acl
;
3344 spin_lock(&inode
->i_lock
);
3345 acl
= nfsi
->nfs4_acl
;
3348 if (buf
== NULL
) /* user is just asking for length */
3350 if (acl
->cached
== 0)
3352 ret
= -ERANGE
; /* see getxattr(2) man page */
3353 if (acl
->len
> buflen
)
3355 memcpy(buf
, acl
->data
, acl
->len
);
3359 spin_unlock(&inode
->i_lock
);
3363 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3365 struct nfs4_cached_acl
*acl
;
3367 if (buf
&& acl_len
<= PAGE_SIZE
) {
3368 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3372 memcpy(acl
->data
, buf
, acl_len
);
3374 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3381 nfs4_set_cached_acl(inode
, acl
);
3384 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3386 struct page
*pages
[NFS4ACL_MAXPAGES
];
3387 struct nfs_getaclargs args
= {
3388 .fh
= NFS_FH(inode
),
3392 struct nfs_getaclres res
= {
3396 struct rpc_message msg
= {
3397 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3401 struct page
*localpage
= NULL
;
3404 if (buflen
< PAGE_SIZE
) {
3405 /* As long as we're doing a round trip to the server anyway,
3406 * let's be prepared for a page of acl data. */
3407 localpage
= alloc_page(GFP_KERNEL
);
3408 resp_buf
= page_address(localpage
);
3409 if (localpage
== NULL
)
3411 args
.acl_pages
[0] = localpage
;
3412 args
.acl_pgbase
= 0;
3413 args
.acl_len
= PAGE_SIZE
;
3416 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
3418 ret
= nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
3421 if (res
.acl_len
> args
.acl_len
)
3422 nfs4_write_cached_acl(inode
, NULL
, res
.acl_len
);
3424 nfs4_write_cached_acl(inode
, resp_buf
, res
.acl_len
);
3427 if (res
.acl_len
> buflen
)
3430 memcpy(buf
, resp_buf
, res
.acl_len
);
3435 __free_page(localpage
);
3439 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3441 struct nfs4_exception exception
= { };
3444 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3447 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3448 } while (exception
.retry
);
3452 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3454 struct nfs_server
*server
= NFS_SERVER(inode
);
3457 if (!nfs4_server_supports_acls(server
))
3459 ret
= nfs_revalidate_inode(server
, inode
);
3462 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3463 nfs_zap_acl_cache(inode
);
3464 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3467 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3470 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3472 struct nfs_server
*server
= NFS_SERVER(inode
);
3473 struct page
*pages
[NFS4ACL_MAXPAGES
];
3474 struct nfs_setaclargs arg
= {
3475 .fh
= NFS_FH(inode
),
3479 struct nfs_setaclres res
;
3480 struct rpc_message msg
= {
3481 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3487 if (!nfs4_server_supports_acls(server
))
3489 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3492 nfs_inode_return_delegation(inode
);
3493 ret
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3496 * Free each page after tx, so the only ref left is
3497 * held by the network stack
3500 put_page(pages
[i
-1]);
3503 * Acl update can result in inode attribute update.
3504 * so mark the attribute cache invalid.
3506 spin_lock(&inode
->i_lock
);
3507 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3508 spin_unlock(&inode
->i_lock
);
3509 nfs_access_zap_cache(inode
);
3510 nfs_zap_acl_cache(inode
);
3514 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3516 struct nfs4_exception exception
= { };
3519 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3520 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3522 } while (exception
.retry
);
3527 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3529 struct nfs_client
*clp
= server
->nfs_client
;
3531 if (task
->tk_status
>= 0)
3533 switch(task
->tk_status
) {
3534 case -NFS4ERR_ADMIN_REVOKED
:
3535 case -NFS4ERR_BAD_STATEID
:
3536 case -NFS4ERR_OPENMODE
:
3539 nfs4_schedule_stateid_recovery(server
, state
);
3540 goto wait_on_recovery
;
3541 case -NFS4ERR_STALE_STATEID
:
3542 case -NFS4ERR_STALE_CLIENTID
:
3543 case -NFS4ERR_EXPIRED
:
3544 nfs4_schedule_lease_recovery(clp
);
3545 goto wait_on_recovery
;
3546 #if defined(CONFIG_NFS_V4_1)
3547 case -NFS4ERR_BADSESSION
:
3548 case -NFS4ERR_BADSLOT
:
3549 case -NFS4ERR_BAD_HIGH_SLOT
:
3550 case -NFS4ERR_DEADSESSION
:
3551 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3552 case -NFS4ERR_SEQ_FALSE_RETRY
:
3553 case -NFS4ERR_SEQ_MISORDERED
:
3554 dprintk("%s ERROR %d, Reset session\n", __func__
,
3556 nfs4_schedule_session_recovery(clp
->cl_session
);
3557 task
->tk_status
= 0;
3559 #endif /* CONFIG_NFS_V4_1 */
3560 case -NFS4ERR_DELAY
:
3561 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3562 case -NFS4ERR_GRACE
:
3564 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3565 task
->tk_status
= 0;
3567 case -NFS4ERR_OLD_STATEID
:
3568 task
->tk_status
= 0;
3571 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3574 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3575 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3576 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3577 task
->tk_status
= 0;
3581 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
3582 unsigned short port
, struct rpc_cred
*cred
,
3583 struct nfs4_setclientid_res
*res
)
3585 nfs4_verifier sc_verifier
;
3586 struct nfs4_setclientid setclientid
= {
3587 .sc_verifier
= &sc_verifier
,
3589 .sc_cb_ident
= clp
->cl_cb_ident
,
3591 struct rpc_message msg
= {
3592 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3593 .rpc_argp
= &setclientid
,
3601 p
= (__be32
*)sc_verifier
.data
;
3602 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3603 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3606 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3607 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3609 rpc_peeraddr2str(clp
->cl_rpcclient
,
3611 rpc_peeraddr2str(clp
->cl_rpcclient
,
3613 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3614 clp
->cl_id_uniquifier
);
3615 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3616 sizeof(setclientid
.sc_netid
),
3617 rpc_peeraddr2str(clp
->cl_rpcclient
,
3618 RPC_DISPLAY_NETID
));
3619 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3620 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3621 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3623 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3624 if (status
!= -NFS4ERR_CLID_INUSE
)
3629 ssleep(clp
->cl_lease_time
/ HZ
+ 1);
3631 if (++clp
->cl_id_uniquifier
== 0)
3637 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3638 struct nfs4_setclientid_res
*arg
,
3639 struct rpc_cred
*cred
)
3641 struct nfs_fsinfo fsinfo
;
3642 struct rpc_message msg
= {
3643 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3645 .rpc_resp
= &fsinfo
,
3652 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3654 spin_lock(&clp
->cl_lock
);
3655 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3656 clp
->cl_last_renewal
= now
;
3657 spin_unlock(&clp
->cl_lock
);
3662 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3663 struct nfs4_setclientid_res
*arg
,
3664 struct rpc_cred
*cred
)
3669 err
= _nfs4_proc_setclientid_confirm(clp
, arg
, cred
);
3673 case -NFS4ERR_RESOURCE
:
3674 /* The IBM lawyers misread another document! */
3675 case -NFS4ERR_DELAY
:
3676 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
3682 struct nfs4_delegreturndata
{
3683 struct nfs4_delegreturnargs args
;
3684 struct nfs4_delegreturnres res
;
3686 nfs4_stateid stateid
;
3687 unsigned long timestamp
;
3688 struct nfs_fattr fattr
;
3692 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3694 struct nfs4_delegreturndata
*data
= calldata
;
3696 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3699 switch (task
->tk_status
) {
3700 case -NFS4ERR_STALE_STATEID
:
3701 case -NFS4ERR_EXPIRED
:
3703 renew_lease(data
->res
.server
, data
->timestamp
);
3706 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
3708 nfs_restart_rpc(task
, data
->res
.server
->nfs_client
);
3712 data
->rpc_status
= task
->tk_status
;
3715 static void nfs4_delegreturn_release(void *calldata
)
3720 #if defined(CONFIG_NFS_V4_1)
3721 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3723 struct nfs4_delegreturndata
*d_data
;
3725 d_data
= (struct nfs4_delegreturndata
*)data
;
3727 if (nfs4_setup_sequence(d_data
->res
.server
,
3728 &d_data
->args
.seq_args
,
3729 &d_data
->res
.seq_res
, 1, task
))
3731 rpc_call_start(task
);
3733 #endif /* CONFIG_NFS_V4_1 */
3735 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3736 #if defined(CONFIG_NFS_V4_1)
3737 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3738 #endif /* CONFIG_NFS_V4_1 */
3739 .rpc_call_done
= nfs4_delegreturn_done
,
3740 .rpc_release
= nfs4_delegreturn_release
,
3743 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3745 struct nfs4_delegreturndata
*data
;
3746 struct nfs_server
*server
= NFS_SERVER(inode
);
3747 struct rpc_task
*task
;
3748 struct rpc_message msg
= {
3749 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3752 struct rpc_task_setup task_setup_data
= {
3753 .rpc_client
= server
->client
,
3754 .rpc_message
= &msg
,
3755 .callback_ops
= &nfs4_delegreturn_ops
,
3756 .flags
= RPC_TASK_ASYNC
,
3760 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
3763 data
->args
.fhandle
= &data
->fh
;
3764 data
->args
.stateid
= &data
->stateid
;
3765 data
->args
.bitmask
= server
->attr_bitmask
;
3766 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3767 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3768 data
->res
.fattr
= &data
->fattr
;
3769 data
->res
.server
= server
;
3770 nfs_fattr_init(data
->res
.fattr
);
3771 data
->timestamp
= jiffies
;
3772 data
->rpc_status
= 0;
3774 task_setup_data
.callback_data
= data
;
3775 msg
.rpc_argp
= &data
->args
;
3776 msg
.rpc_resp
= &data
->res
;
3777 task
= rpc_run_task(&task_setup_data
);
3779 return PTR_ERR(task
);
3782 status
= nfs4_wait_for_completion_rpc_task(task
);
3785 status
= data
->rpc_status
;
3788 nfs_refresh_inode(inode
, &data
->fattr
);
3794 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3796 struct nfs_server
*server
= NFS_SERVER(inode
);
3797 struct nfs4_exception exception
= { };
3800 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3802 case -NFS4ERR_STALE_STATEID
:
3803 case -NFS4ERR_EXPIRED
:
3807 err
= nfs4_handle_exception(server
, err
, &exception
);
3808 } while (exception
.retry
);
3812 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3813 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3816 * sleep, with exponential backoff, and retry the LOCK operation.
3818 static unsigned long
3819 nfs4_set_lock_task_retry(unsigned long timeout
)
3821 schedule_timeout_killable(timeout
);
3823 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3824 return NFS4_LOCK_MAXTIMEOUT
;
3828 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3830 struct inode
*inode
= state
->inode
;
3831 struct nfs_server
*server
= NFS_SERVER(inode
);
3832 struct nfs_client
*clp
= server
->nfs_client
;
3833 struct nfs_lockt_args arg
= {
3834 .fh
= NFS_FH(inode
),
3837 struct nfs_lockt_res res
= {
3840 struct rpc_message msg
= {
3841 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3844 .rpc_cred
= state
->owner
->so_cred
,
3846 struct nfs4_lock_state
*lsp
;
3849 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3850 status
= nfs4_set_lock_state(state
, request
);
3853 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3854 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3855 arg
.lock_owner
.s_dev
= server
->s_dev
;
3856 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3859 request
->fl_type
= F_UNLCK
;
3861 case -NFS4ERR_DENIED
:
3864 request
->fl_ops
->fl_release_private(request
);
3869 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3871 struct nfs4_exception exception
= { };
3875 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3876 _nfs4_proc_getlk(state
, cmd
, request
),
3878 } while (exception
.retry
);
3882 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3885 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3887 res
= posix_lock_file_wait(file
, fl
);
3890 res
= flock_lock_file_wait(file
, fl
);
3898 struct nfs4_unlockdata
{
3899 struct nfs_locku_args arg
;
3900 struct nfs_locku_res res
;
3901 struct nfs4_lock_state
*lsp
;
3902 struct nfs_open_context
*ctx
;
3903 struct file_lock fl
;
3904 const struct nfs_server
*server
;
3905 unsigned long timestamp
;
3908 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3909 struct nfs_open_context
*ctx
,
3910 struct nfs4_lock_state
*lsp
,
3911 struct nfs_seqid
*seqid
)
3913 struct nfs4_unlockdata
*p
;
3914 struct inode
*inode
= lsp
->ls_state
->inode
;
3916 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
3919 p
->arg
.fh
= NFS_FH(inode
);
3921 p
->arg
.seqid
= seqid
;
3922 p
->res
.seqid
= seqid
;
3923 p
->arg
.stateid
= &lsp
->ls_stateid
;
3925 atomic_inc(&lsp
->ls_count
);
3926 /* Ensure we don't close file until we're done freeing locks! */
3927 p
->ctx
= get_nfs_open_context(ctx
);
3928 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3929 p
->server
= NFS_SERVER(inode
);
3933 static void nfs4_locku_release_calldata(void *data
)
3935 struct nfs4_unlockdata
*calldata
= data
;
3936 nfs_free_seqid(calldata
->arg
.seqid
);
3937 nfs4_put_lock_state(calldata
->lsp
);
3938 put_nfs_open_context(calldata
->ctx
);
3942 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3944 struct nfs4_unlockdata
*calldata
= data
;
3946 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
3948 switch (task
->tk_status
) {
3950 memcpy(calldata
->lsp
->ls_stateid
.data
,
3951 calldata
->res
.stateid
.data
,
3952 sizeof(calldata
->lsp
->ls_stateid
.data
));
3953 renew_lease(calldata
->server
, calldata
->timestamp
);
3955 case -NFS4ERR_BAD_STATEID
:
3956 case -NFS4ERR_OLD_STATEID
:
3957 case -NFS4ERR_STALE_STATEID
:
3958 case -NFS4ERR_EXPIRED
:
3961 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
3962 nfs_restart_rpc(task
,
3963 calldata
->server
->nfs_client
);
3967 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3969 struct nfs4_unlockdata
*calldata
= data
;
3971 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3973 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3974 /* Note: exit _without_ running nfs4_locku_done */
3975 task
->tk_action
= NULL
;
3978 calldata
->timestamp
= jiffies
;
3979 if (nfs4_setup_sequence(calldata
->server
,
3980 &calldata
->arg
.seq_args
,
3981 &calldata
->res
.seq_res
, 1, task
))
3983 rpc_call_start(task
);
3986 static const struct rpc_call_ops nfs4_locku_ops
= {
3987 .rpc_call_prepare
= nfs4_locku_prepare
,
3988 .rpc_call_done
= nfs4_locku_done
,
3989 .rpc_release
= nfs4_locku_release_calldata
,
3992 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3993 struct nfs_open_context
*ctx
,
3994 struct nfs4_lock_state
*lsp
,
3995 struct nfs_seqid
*seqid
)
3997 struct nfs4_unlockdata
*data
;
3998 struct rpc_message msg
= {
3999 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4000 .rpc_cred
= ctx
->cred
,
4002 struct rpc_task_setup task_setup_data
= {
4003 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4004 .rpc_message
= &msg
,
4005 .callback_ops
= &nfs4_locku_ops
,
4006 .workqueue
= nfsiod_workqueue
,
4007 .flags
= RPC_TASK_ASYNC
,
4010 /* Ensure this is an unlock - when canceling a lock, the
4011 * canceled lock is passed in, and it won't be an unlock.
4013 fl
->fl_type
= F_UNLCK
;
4015 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4017 nfs_free_seqid(seqid
);
4018 return ERR_PTR(-ENOMEM
);
4021 msg
.rpc_argp
= &data
->arg
;
4022 msg
.rpc_resp
= &data
->res
;
4023 task_setup_data
.callback_data
= data
;
4024 return rpc_run_task(&task_setup_data
);
4027 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4029 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4030 struct nfs_seqid
*seqid
;
4031 struct nfs4_lock_state
*lsp
;
4032 struct rpc_task
*task
;
4034 unsigned char fl_flags
= request
->fl_flags
;
4036 status
= nfs4_set_lock_state(state
, request
);
4037 /* Unlock _before_ we do the RPC call */
4038 request
->fl_flags
|= FL_EXISTS
;
4039 down_read(&nfsi
->rwsem
);
4040 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4041 up_read(&nfsi
->rwsem
);
4044 up_read(&nfsi
->rwsem
);
4047 /* Is this a delegated lock? */
4048 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4050 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4051 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4055 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4056 status
= PTR_ERR(task
);
4059 status
= nfs4_wait_for_completion_rpc_task(task
);
4062 request
->fl_flags
= fl_flags
;
4066 struct nfs4_lockdata
{
4067 struct nfs_lock_args arg
;
4068 struct nfs_lock_res res
;
4069 struct nfs4_lock_state
*lsp
;
4070 struct nfs_open_context
*ctx
;
4071 struct file_lock fl
;
4072 unsigned long timestamp
;
4075 struct nfs_server
*server
;
4078 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4079 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4082 struct nfs4_lockdata
*p
;
4083 struct inode
*inode
= lsp
->ls_state
->inode
;
4084 struct nfs_server
*server
= NFS_SERVER(inode
);
4086 p
= kzalloc(sizeof(*p
), gfp_mask
);
4090 p
->arg
.fh
= NFS_FH(inode
);
4092 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4093 if (p
->arg
.open_seqid
== NULL
)
4095 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4096 if (p
->arg
.lock_seqid
== NULL
)
4097 goto out_free_seqid
;
4098 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4099 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4100 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
4101 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4102 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4105 atomic_inc(&lsp
->ls_count
);
4106 p
->ctx
= get_nfs_open_context(ctx
);
4107 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4110 nfs_free_seqid(p
->arg
.open_seqid
);
4116 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4118 struct nfs4_lockdata
*data
= calldata
;
4119 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4121 dprintk("%s: begin!\n", __func__
);
4122 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4124 /* Do we need to do an open_to_lock_owner? */
4125 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4126 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4128 data
->arg
.open_stateid
= &state
->stateid
;
4129 data
->arg
.new_lock_owner
= 1;
4130 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4132 data
->arg
.new_lock_owner
= 0;
4133 data
->timestamp
= jiffies
;
4134 if (nfs4_setup_sequence(data
->server
,
4135 &data
->arg
.seq_args
,
4136 &data
->res
.seq_res
, 1, task
))
4138 rpc_call_start(task
);
4139 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4142 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4144 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4145 nfs4_lock_prepare(task
, calldata
);
4148 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4150 struct nfs4_lockdata
*data
= calldata
;
4152 dprintk("%s: begin!\n", __func__
);
4154 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4157 data
->rpc_status
= task
->tk_status
;
4158 if (data
->arg
.new_lock_owner
!= 0) {
4159 if (data
->rpc_status
== 0)
4160 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4164 if (data
->rpc_status
== 0) {
4165 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
4166 sizeof(data
->lsp
->ls_stateid
.data
));
4167 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4168 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
4171 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4174 static void nfs4_lock_release(void *calldata
)
4176 struct nfs4_lockdata
*data
= calldata
;
4178 dprintk("%s: begin!\n", __func__
);
4179 nfs_free_seqid(data
->arg
.open_seqid
);
4180 if (data
->cancelled
!= 0) {
4181 struct rpc_task
*task
;
4182 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4183 data
->arg
.lock_seqid
);
4185 rpc_put_task_async(task
);
4186 dprintk("%s: cancelling lock!\n", __func__
);
4188 nfs_free_seqid(data
->arg
.lock_seqid
);
4189 nfs4_put_lock_state(data
->lsp
);
4190 put_nfs_open_context(data
->ctx
);
4192 dprintk("%s: done!\n", __func__
);
4195 static const struct rpc_call_ops nfs4_lock_ops
= {
4196 .rpc_call_prepare
= nfs4_lock_prepare
,
4197 .rpc_call_done
= nfs4_lock_done
,
4198 .rpc_release
= nfs4_lock_release
,
4201 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4202 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4203 .rpc_call_done
= nfs4_lock_done
,
4204 .rpc_release
= nfs4_lock_release
,
4207 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4210 case -NFS4ERR_ADMIN_REVOKED
:
4211 case -NFS4ERR_BAD_STATEID
:
4212 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4213 if (new_lock_owner
!= 0 ||
4214 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4215 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4217 case -NFS4ERR_STALE_STATEID
:
4218 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4219 case -NFS4ERR_EXPIRED
:
4220 nfs4_schedule_lease_recovery(server
->nfs_client
);
4224 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4226 struct nfs4_lockdata
*data
;
4227 struct rpc_task
*task
;
4228 struct rpc_message msg
= {
4229 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4230 .rpc_cred
= state
->owner
->so_cred
,
4232 struct rpc_task_setup task_setup_data
= {
4233 .rpc_client
= NFS_CLIENT(state
->inode
),
4234 .rpc_message
= &msg
,
4235 .callback_ops
= &nfs4_lock_ops
,
4236 .workqueue
= nfsiod_workqueue
,
4237 .flags
= RPC_TASK_ASYNC
,
4241 dprintk("%s: begin!\n", __func__
);
4242 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4243 fl
->fl_u
.nfs4_fl
.owner
,
4244 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4248 data
->arg
.block
= 1;
4249 if (recovery_type
> NFS_LOCK_NEW
) {
4250 if (recovery_type
== NFS_LOCK_RECLAIM
)
4251 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4252 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4254 msg
.rpc_argp
= &data
->arg
;
4255 msg
.rpc_resp
= &data
->res
;
4256 task_setup_data
.callback_data
= data
;
4257 task
= rpc_run_task(&task_setup_data
);
4259 return PTR_ERR(task
);
4260 ret
= nfs4_wait_for_completion_rpc_task(task
);
4262 ret
= data
->rpc_status
;
4264 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4265 data
->arg
.new_lock_owner
, ret
);
4267 data
->cancelled
= 1;
4269 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4273 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4275 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4276 struct nfs4_exception exception
= { };
4280 /* Cache the lock if possible... */
4281 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4283 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4284 if (err
!= -NFS4ERR_DELAY
)
4286 nfs4_handle_exception(server
, err
, &exception
);
4287 } while (exception
.retry
);
4291 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4293 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4294 struct nfs4_exception exception
= { };
4297 err
= nfs4_set_lock_state(state
, request
);
4301 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4303 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4307 case -NFS4ERR_GRACE
:
4308 case -NFS4ERR_DELAY
:
4309 nfs4_handle_exception(server
, err
, &exception
);
4312 } while (exception
.retry
);
4317 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4319 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4320 unsigned char fl_flags
= request
->fl_flags
;
4321 int status
= -ENOLCK
;
4323 if ((fl_flags
& FL_POSIX
) &&
4324 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4326 /* Is this a delegated open? */
4327 status
= nfs4_set_lock_state(state
, request
);
4330 request
->fl_flags
|= FL_ACCESS
;
4331 status
= do_vfs_lock(request
->fl_file
, request
);
4334 down_read(&nfsi
->rwsem
);
4335 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4336 /* Yes: cache locks! */
4337 /* ...but avoid races with delegation recall... */
4338 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4339 status
= do_vfs_lock(request
->fl_file
, request
);
4342 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4345 /* Note: we always want to sleep here! */
4346 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4347 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4348 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
4350 up_read(&nfsi
->rwsem
);
4352 request
->fl_flags
= fl_flags
;
4356 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4358 struct nfs4_exception exception
= { };
4362 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4363 if (err
== -NFS4ERR_DENIED
)
4365 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4367 } while (exception
.retry
);
4372 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4374 struct nfs_open_context
*ctx
;
4375 struct nfs4_state
*state
;
4376 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4379 /* verify open state */
4380 ctx
= nfs_file_open_context(filp
);
4383 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4386 if (IS_GETLK(cmd
)) {
4388 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4392 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4395 if (request
->fl_type
== F_UNLCK
) {
4397 return nfs4_proc_unlck(state
, cmd
, request
);
4404 status
= nfs4_proc_setlk(state
, cmd
, request
);
4405 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4407 timeout
= nfs4_set_lock_task_retry(timeout
);
4408 status
= -ERESTARTSYS
;
4411 } while(status
< 0);
4415 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4417 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4418 struct nfs4_exception exception
= { };
4421 err
= nfs4_set_lock_state(state
, fl
);
4425 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4428 printk(KERN_ERR
"%s: unhandled error %d.\n",
4433 case -NFS4ERR_EXPIRED
:
4434 case -NFS4ERR_STALE_CLIENTID
:
4435 case -NFS4ERR_STALE_STATEID
:
4436 nfs4_schedule_lease_recovery(server
->nfs_client
);
4438 case -NFS4ERR_BADSESSION
:
4439 case -NFS4ERR_BADSLOT
:
4440 case -NFS4ERR_BAD_HIGH_SLOT
:
4441 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4442 case -NFS4ERR_DEADSESSION
:
4443 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
4447 * The show must go on: exit, but mark the
4448 * stateid as needing recovery.
4450 case -NFS4ERR_ADMIN_REVOKED
:
4451 case -NFS4ERR_BAD_STATEID
:
4452 case -NFS4ERR_OPENMODE
:
4453 nfs4_schedule_stateid_recovery(server
, state
);
4458 * User RPCSEC_GSS context has expired.
4459 * We cannot recover this stateid now, so
4460 * skip it and allow recovery thread to
4466 case -NFS4ERR_DENIED
:
4467 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4470 case -NFS4ERR_DELAY
:
4473 err
= nfs4_handle_exception(server
, err
, &exception
);
4474 } while (exception
.retry
);
4479 static void nfs4_release_lockowner_release(void *calldata
)
4484 const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4485 .rpc_release
= nfs4_release_lockowner_release
,
4488 void nfs4_release_lockowner(const struct nfs4_lock_state
*lsp
)
4490 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4491 struct nfs_release_lockowner_args
*args
;
4492 struct rpc_message msg
= {
4493 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4496 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
4498 args
= kmalloc(sizeof(*args
), GFP_NOFS
);
4501 args
->lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4502 args
->lock_owner
.id
= lsp
->ls_id
.id
;
4503 args
->lock_owner
.s_dev
= server
->s_dev
;
4504 msg
.rpc_argp
= args
;
4505 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, args
);
4508 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4510 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
4511 const void *buf
, size_t buflen
,
4512 int flags
, int type
)
4514 if (strcmp(key
, "") != 0)
4517 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
4520 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
4521 void *buf
, size_t buflen
, int type
)
4523 if (strcmp(key
, "") != 0)
4526 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
4529 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
4530 size_t list_len
, const char *name
,
4531 size_t name_len
, int type
)
4533 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
4535 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4538 if (list
&& len
<= list_len
)
4539 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
4543 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4545 if (!((fattr
->valid
& NFS_ATTR_FATTR_FILEID
) &&
4546 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4547 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4550 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4551 NFS_ATTR_FATTR_NLINK
;
4552 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4556 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4557 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4559 struct nfs_server
*server
= NFS_SERVER(dir
);
4561 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4562 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
4564 struct nfs4_fs_locations_arg args
= {
4565 .dir_fh
= NFS_FH(dir
),
4570 struct nfs4_fs_locations_res res
= {
4571 .fs_locations
= fs_locations
,
4573 struct rpc_message msg
= {
4574 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4580 dprintk("%s: start\n", __func__
);
4581 nfs_fattr_init(&fs_locations
->fattr
);
4582 fs_locations
->server
= server
;
4583 fs_locations
->nlocations
= 0;
4584 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
4585 nfs_fixup_referral_attributes(&fs_locations
->fattr
);
4586 dprintk("%s: returned status = %d\n", __func__
, status
);
4590 #ifdef CONFIG_NFS_V4_1
4592 * Check the exchange flags returned by the server for invalid flags, having
4593 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
4596 static int nfs4_check_cl_exchange_flags(u32 flags
)
4598 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
4600 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
4601 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
4603 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
4607 return -NFS4ERR_INVAL
;
4611 * nfs4_proc_exchange_id()
4613 * Since the clientid has expired, all compounds using sessions
4614 * associated with the stale clientid will be returning
4615 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4616 * be in some phase of session reset.
4618 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4620 nfs4_verifier verifier
;
4621 struct nfs41_exchange_id_args args
= {
4623 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
4625 struct nfs41_exchange_id_res res
= {
4629 struct rpc_message msg
= {
4630 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4637 dprintk("--> %s\n", __func__
);
4638 BUG_ON(clp
== NULL
);
4640 p
= (u32
*)verifier
.data
;
4641 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4642 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4643 args
.verifier
= &verifier
;
4645 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4648 init_utsname()->nodename
,
4649 init_utsname()->domainname
,
4650 clp
->cl_rpcclient
->cl_auth
->au_flavor
);
4652 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
4654 status
= nfs4_check_cl_exchange_flags(clp
->cl_exchange_flags
);
4655 dprintk("<-- %s status= %d\n", __func__
, status
);
4659 struct nfs4_get_lease_time_data
{
4660 struct nfs4_get_lease_time_args
*args
;
4661 struct nfs4_get_lease_time_res
*res
;
4662 struct nfs_client
*clp
;
4665 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4669 struct nfs4_get_lease_time_data
*data
=
4670 (struct nfs4_get_lease_time_data
*)calldata
;
4672 dprintk("--> %s\n", __func__
);
4673 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4674 /* just setup sequence, do not trigger session recovery
4675 since we're invoked within one */
4676 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4677 &data
->args
->la_seq_args
,
4678 &data
->res
->lr_seq_res
, 0, task
);
4680 BUG_ON(ret
== -EAGAIN
);
4681 rpc_call_start(task
);
4682 dprintk("<-- %s\n", __func__
);
4686 * Called from nfs4_state_manager thread for session setup, so don't recover
4687 * from sequence operation or clientid errors.
4689 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4691 struct nfs4_get_lease_time_data
*data
=
4692 (struct nfs4_get_lease_time_data
*)calldata
;
4694 dprintk("--> %s\n", __func__
);
4695 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
4697 switch (task
->tk_status
) {
4698 case -NFS4ERR_DELAY
:
4699 case -NFS4ERR_GRACE
:
4700 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
4701 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
4702 task
->tk_status
= 0;
4703 nfs_restart_rpc(task
, data
->clp
);
4706 dprintk("<-- %s\n", __func__
);
4709 struct rpc_call_ops nfs4_get_lease_time_ops
= {
4710 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
4711 .rpc_call_done
= nfs4_get_lease_time_done
,
4714 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
4716 struct rpc_task
*task
;
4717 struct nfs4_get_lease_time_args args
;
4718 struct nfs4_get_lease_time_res res
= {
4719 .lr_fsinfo
= fsinfo
,
4721 struct nfs4_get_lease_time_data data
= {
4726 struct rpc_message msg
= {
4727 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
4731 struct rpc_task_setup task_setup
= {
4732 .rpc_client
= clp
->cl_rpcclient
,
4733 .rpc_message
= &msg
,
4734 .callback_ops
= &nfs4_get_lease_time_ops
,
4735 .callback_data
= &data
4739 dprintk("--> %s\n", __func__
);
4740 task
= rpc_run_task(&task_setup
);
4743 status
= PTR_ERR(task
);
4745 status
= task
->tk_status
;
4748 dprintk("<-- %s return %d\n", __func__
, status
);
4754 * Reset a slot table
4756 static int nfs4_reset_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
4759 struct nfs4_slot
*new = NULL
;
4763 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
4764 max_reqs
, tbl
->max_slots
);
4766 /* Does the newly negotiated max_reqs match the existing slot table? */
4767 if (max_reqs
!= tbl
->max_slots
) {
4769 new = kmalloc(max_reqs
* sizeof(struct nfs4_slot
),
4776 spin_lock(&tbl
->slot_tbl_lock
);
4779 tbl
->max_slots
= max_reqs
;
4781 for (i
= 0; i
< tbl
->max_slots
; ++i
)
4782 tbl
->slots
[i
].seq_nr
= ivalue
;
4783 spin_unlock(&tbl
->slot_tbl_lock
);
4784 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4785 tbl
, tbl
->slots
, tbl
->max_slots
);
4787 dprintk("<-- %s: return %d\n", __func__
, ret
);
4792 * Reset the forechannel and backchannel slot tables
4794 static int nfs4_reset_slot_tables(struct nfs4_session
*session
)
4798 status
= nfs4_reset_slot_table(&session
->fc_slot_table
,
4799 session
->fc_attrs
.max_reqs
, 1);
4803 status
= nfs4_reset_slot_table(&session
->bc_slot_table
,
4804 session
->bc_attrs
.max_reqs
, 0);
4808 /* Destroy the slot table */
4809 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
4811 if (session
->fc_slot_table
.slots
!= NULL
) {
4812 kfree(session
->fc_slot_table
.slots
);
4813 session
->fc_slot_table
.slots
= NULL
;
4815 if (session
->bc_slot_table
.slots
!= NULL
) {
4816 kfree(session
->bc_slot_table
.slots
);
4817 session
->bc_slot_table
.slots
= NULL
;
4823 * Initialize slot table
4825 static int nfs4_init_slot_table(struct nfs4_slot_table
*tbl
,
4826 int max_slots
, int ivalue
)
4828 struct nfs4_slot
*slot
;
4831 BUG_ON(max_slots
> NFS4_MAX_SLOT_TABLE
);
4833 dprintk("--> %s: max_reqs=%u\n", __func__
, max_slots
);
4835 slot
= kcalloc(max_slots
, sizeof(struct nfs4_slot
), GFP_NOFS
);
4840 spin_lock(&tbl
->slot_tbl_lock
);
4841 tbl
->max_slots
= max_slots
;
4843 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
4844 spin_unlock(&tbl
->slot_tbl_lock
);
4845 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4846 tbl
, tbl
->slots
, tbl
->max_slots
);
4848 dprintk("<-- %s: return %d\n", __func__
, ret
);
4853 * Initialize the forechannel and backchannel tables
4855 static int nfs4_init_slot_tables(struct nfs4_session
*session
)
4857 struct nfs4_slot_table
*tbl
;
4860 tbl
= &session
->fc_slot_table
;
4861 if (tbl
->slots
== NULL
) {
4862 status
= nfs4_init_slot_table(tbl
,
4863 session
->fc_attrs
.max_reqs
, 1);
4868 tbl
= &session
->bc_slot_table
;
4869 if (tbl
->slots
== NULL
) {
4870 status
= nfs4_init_slot_table(tbl
,
4871 session
->bc_attrs
.max_reqs
, 0);
4873 nfs4_destroy_slot_tables(session
);
4879 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
4881 struct nfs4_session
*session
;
4882 struct nfs4_slot_table
*tbl
;
4884 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
4888 tbl
= &session
->fc_slot_table
;
4889 tbl
->highest_used_slotid
= -1;
4890 spin_lock_init(&tbl
->slot_tbl_lock
);
4891 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
4892 init_completion(&tbl
->complete
);
4894 tbl
= &session
->bc_slot_table
;
4895 tbl
->highest_used_slotid
= -1;
4896 spin_lock_init(&tbl
->slot_tbl_lock
);
4897 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
4898 init_completion(&tbl
->complete
);
4900 session
->session_state
= 1<<NFS4_SESSION_INITING
;
4906 void nfs4_destroy_session(struct nfs4_session
*session
)
4908 nfs4_proc_destroy_session(session
);
4909 dprintk("%s Destroy backchannel for xprt %p\n",
4910 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
4911 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
4912 NFS41_BC_MIN_CALLBACKS
);
4913 nfs4_destroy_slot_tables(session
);
4918 * Initialize the values to be used by the client in CREATE_SESSION
4919 * If nfs4_init_session set the fore channel request and response sizes,
4922 * Set the back channel max_resp_sz_cached to zero to force the client to
4923 * always set csa_cachethis to FALSE because the current implementation
4924 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
4926 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
4928 struct nfs4_session
*session
= args
->client
->cl_session
;
4929 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
4930 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
4933 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
4935 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
4936 /* Fore channel attributes */
4937 args
->fc_attrs
.headerpadsz
= 0;
4938 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
4939 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
4940 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
4941 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
4943 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
4944 "max_ops=%u max_reqs=%u\n",
4946 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
4947 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
4949 /* Back channel attributes */
4950 args
->bc_attrs
.headerpadsz
= 0;
4951 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
4952 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
4953 args
->bc_attrs
.max_resp_sz_cached
= 0;
4954 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
4955 args
->bc_attrs
.max_reqs
= 1;
4957 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
4958 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4960 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
4961 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
4962 args
->bc_attrs
.max_reqs
);
4965 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
4967 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
4968 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
4970 if (rcvd
->headerpadsz
> sent
->headerpadsz
)
4972 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
4975 * Our requested max_ops is the minimum we need; we're not
4976 * prepared to break up compounds into smaller pieces than that.
4977 * So, no point even trying to continue if the server won't
4980 if (rcvd
->max_ops
< sent
->max_ops
)
4982 if (rcvd
->max_reqs
== 0)
4987 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
4989 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
4990 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
4992 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
4994 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
4996 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
4998 /* These would render the backchannel useless: */
4999 if (rcvd
->max_ops
== 0)
5001 if (rcvd
->max_reqs
== 0)
5006 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5007 struct nfs4_session
*session
)
5011 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5014 return nfs4_verify_back_channel_attrs(args
, session
);
5017 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
5019 struct nfs4_session
*session
= clp
->cl_session
;
5020 struct nfs41_create_session_args args
= {
5022 .cb_program
= NFS4_CALLBACK
,
5024 struct nfs41_create_session_res res
= {
5027 struct rpc_message msg
= {
5028 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5034 nfs4_init_channel_attrs(&args
);
5035 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5037 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
5040 /* Verify the session's negotiated channel_attrs values */
5041 status
= nfs4_verify_channel_attrs(&args
, session
);
5043 /* Increment the clientid slot sequence id */
5051 * Issues a CREATE_SESSION operation to the server.
5052 * It is the responsibility of the caller to verify the session is
5053 * expired before calling this routine.
5055 int nfs4_proc_create_session(struct nfs_client
*clp
)
5059 struct nfs4_session
*session
= clp
->cl_session
;
5063 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5066 status
= _nfs4_proc_create_session(clp
);
5067 if (status
== -NFS4ERR_DELAY
) {
5068 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
5072 } while (status
== -NFS4ERR_DELAY
);
5077 /* Init and reset the fore channel */
5078 status
= nfs4_init_slot_tables(session
);
5079 dprintk("slot table initialization returned %d\n", status
);
5082 status
= nfs4_reset_slot_tables(session
);
5083 dprintk("slot table reset returned %d\n", status
);
5087 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5088 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5089 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5091 dprintk("<-- %s\n", __func__
);
5096 * Issue the over-the-wire RPC DESTROY_SESSION.
5097 * The caller must serialize access to this routine.
5099 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
5102 struct rpc_message msg
;
5104 dprintk("--> nfs4_proc_destroy_session\n");
5106 /* session is still being setup */
5107 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5110 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
5111 msg
.rpc_argp
= session
;
5112 msg
.rpc_resp
= NULL
;
5113 msg
.rpc_cred
= NULL
;
5114 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
5118 "Got error %d from the server on DESTROY_SESSION. "
5119 "Session has been destroyed regardless...\n", status
);
5121 dprintk("<-- nfs4_proc_destroy_session\n");
5125 int nfs4_init_session(struct nfs_server
*server
)
5127 struct nfs_client
*clp
= server
->nfs_client
;
5128 struct nfs4_session
*session
;
5129 unsigned int rsize
, wsize
;
5132 if (!nfs4_has_session(clp
))
5135 session
= clp
->cl_session
;
5136 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5139 rsize
= server
->rsize
;
5141 rsize
= NFS_MAX_FILE_IO_SIZE
;
5142 wsize
= server
->wsize
;
5144 wsize
= NFS_MAX_FILE_IO_SIZE
;
5146 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5147 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5149 ret
= nfs4_recover_expired_lease(server
);
5151 ret
= nfs4_check_client_ready(clp
);
5155 int nfs4_init_ds_session(struct nfs_client
*clp
)
5157 struct nfs4_session
*session
= clp
->cl_session
;
5160 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5163 ret
= nfs4_client_recover_expired_lease(clp
);
5165 /* Test for the DS role */
5166 if (!is_ds_client(clp
))
5169 ret
= nfs4_check_client_ready(clp
);
5173 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5177 * Renew the cl_session lease.
5179 struct nfs4_sequence_data
{
5180 struct nfs_client
*clp
;
5181 struct nfs4_sequence_args args
;
5182 struct nfs4_sequence_res res
;
5185 static void nfs41_sequence_release(void *data
)
5187 struct nfs4_sequence_data
*calldata
= data
;
5188 struct nfs_client
*clp
= calldata
->clp
;
5190 if (atomic_read(&clp
->cl_count
) > 1)
5191 nfs4_schedule_state_renewal(clp
);
5192 nfs_put_client(clp
);
5196 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5198 switch(task
->tk_status
) {
5199 case -NFS4ERR_DELAY
:
5200 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5203 nfs4_schedule_lease_recovery(clp
);
5208 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5210 struct nfs4_sequence_data
*calldata
= data
;
5211 struct nfs_client
*clp
= calldata
->clp
;
5213 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5216 if (task
->tk_status
< 0) {
5217 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5218 if (atomic_read(&clp
->cl_count
) == 1)
5221 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5222 rpc_restart_call_prepare(task
);
5226 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5228 dprintk("<-- %s\n", __func__
);
5231 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5233 struct nfs4_sequence_data
*calldata
= data
;
5234 struct nfs_client
*clp
= calldata
->clp
;
5235 struct nfs4_sequence_args
*args
;
5236 struct nfs4_sequence_res
*res
;
5238 args
= task
->tk_msg
.rpc_argp
;
5239 res
= task
->tk_msg
.rpc_resp
;
5241 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, 0, task
))
5243 rpc_call_start(task
);
5246 static const struct rpc_call_ops nfs41_sequence_ops
= {
5247 .rpc_call_done
= nfs41_sequence_call_done
,
5248 .rpc_call_prepare
= nfs41_sequence_prepare
,
5249 .rpc_release
= nfs41_sequence_release
,
5252 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5254 struct nfs4_sequence_data
*calldata
;
5255 struct rpc_message msg
= {
5256 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5259 struct rpc_task_setup task_setup_data
= {
5260 .rpc_client
= clp
->cl_rpcclient
,
5261 .rpc_message
= &msg
,
5262 .callback_ops
= &nfs41_sequence_ops
,
5263 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5266 if (!atomic_inc_not_zero(&clp
->cl_count
))
5267 return ERR_PTR(-EIO
);
5268 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5269 if (calldata
== NULL
) {
5270 nfs_put_client(clp
);
5271 return ERR_PTR(-ENOMEM
);
5273 msg
.rpc_argp
= &calldata
->args
;
5274 msg
.rpc_resp
= &calldata
->res
;
5275 calldata
->clp
= clp
;
5276 task_setup_data
.callback_data
= calldata
;
5278 return rpc_run_task(&task_setup_data
);
5281 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5283 struct rpc_task
*task
;
5286 task
= _nfs41_proc_sequence(clp
, cred
);
5288 ret
= PTR_ERR(task
);
5290 rpc_put_task_async(task
);
5291 dprintk("<-- %s status=%d\n", __func__
, ret
);
5295 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5297 struct rpc_task
*task
;
5300 task
= _nfs41_proc_sequence(clp
, cred
);
5302 ret
= PTR_ERR(task
);
5305 ret
= rpc_wait_for_completion_task(task
);
5307 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5309 if (task
->tk_status
== 0)
5310 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5311 ret
= task
->tk_status
;
5315 dprintk("<-- %s status=%d\n", __func__
, ret
);
5319 struct nfs4_reclaim_complete_data
{
5320 struct nfs_client
*clp
;
5321 struct nfs41_reclaim_complete_args arg
;
5322 struct nfs41_reclaim_complete_res res
;
5325 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5327 struct nfs4_reclaim_complete_data
*calldata
= data
;
5329 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5330 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5331 &calldata
->arg
.seq_args
,
5332 &calldata
->res
.seq_res
, 0, task
))
5335 rpc_call_start(task
);
5338 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5340 switch(task
->tk_status
) {
5342 case -NFS4ERR_COMPLETE_ALREADY
:
5343 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5345 case -NFS4ERR_DELAY
:
5346 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5349 nfs4_schedule_lease_recovery(clp
);
5354 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5356 struct nfs4_reclaim_complete_data
*calldata
= data
;
5357 struct nfs_client
*clp
= calldata
->clp
;
5358 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5360 dprintk("--> %s\n", __func__
);
5361 if (!nfs41_sequence_done(task
, res
))
5364 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5365 rpc_restart_call_prepare(task
);
5368 dprintk("<-- %s\n", __func__
);
5371 static void nfs4_free_reclaim_complete_data(void *data
)
5373 struct nfs4_reclaim_complete_data
*calldata
= data
;
5378 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5379 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5380 .rpc_call_done
= nfs4_reclaim_complete_done
,
5381 .rpc_release
= nfs4_free_reclaim_complete_data
,
5385 * Issue a global reclaim complete.
5387 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5389 struct nfs4_reclaim_complete_data
*calldata
;
5390 struct rpc_task
*task
;
5391 struct rpc_message msg
= {
5392 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5394 struct rpc_task_setup task_setup_data
= {
5395 .rpc_client
= clp
->cl_rpcclient
,
5396 .rpc_message
= &msg
,
5397 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5398 .flags
= RPC_TASK_ASYNC
,
5400 int status
= -ENOMEM
;
5402 dprintk("--> %s\n", __func__
);
5403 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5404 if (calldata
== NULL
)
5406 calldata
->clp
= clp
;
5407 calldata
->arg
.one_fs
= 0;
5409 msg
.rpc_argp
= &calldata
->arg
;
5410 msg
.rpc_resp
= &calldata
->res
;
5411 task_setup_data
.callback_data
= calldata
;
5412 task
= rpc_run_task(&task_setup_data
);
5414 status
= PTR_ERR(task
);
5417 status
= nfs4_wait_for_completion_rpc_task(task
);
5419 status
= task
->tk_status
;
5423 dprintk("<-- %s status=%d\n", __func__
, status
);
5428 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
5430 struct nfs4_layoutget
*lgp
= calldata
;
5431 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5433 dprintk("--> %s\n", __func__
);
5434 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
5435 * right now covering the LAYOUTGET we are about to send.
5436 * However, that is not so catastrophic, and there seems
5437 * to be no way to prevent it completely.
5439 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
5440 &lgp
->res
.seq_res
, 0, task
))
5442 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
5443 NFS_I(lgp
->args
.inode
)->layout
,
5444 lgp
->args
.ctx
->state
)) {
5445 rpc_exit(task
, NFS4_OK
);
5448 rpc_call_start(task
);
5451 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
5453 struct nfs4_layoutget
*lgp
= calldata
;
5454 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5456 dprintk("--> %s\n", __func__
);
5458 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
5461 switch (task
->tk_status
) {
5464 case -NFS4ERR_LAYOUTTRYLATER
:
5465 case -NFS4ERR_RECALLCONFLICT
:
5466 task
->tk_status
= -NFS4ERR_DELAY
;
5469 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5470 rpc_restart_call_prepare(task
);
5474 dprintk("<-- %s\n", __func__
);
5477 static void nfs4_layoutget_release(void *calldata
)
5479 struct nfs4_layoutget
*lgp
= calldata
;
5481 dprintk("--> %s\n", __func__
);
5482 if (lgp
->res
.layout
.buf
!= NULL
)
5483 free_page((unsigned long) lgp
->res
.layout
.buf
);
5484 put_nfs_open_context(lgp
->args
.ctx
);
5486 dprintk("<-- %s\n", __func__
);
5489 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
5490 .rpc_call_prepare
= nfs4_layoutget_prepare
,
5491 .rpc_call_done
= nfs4_layoutget_done
,
5492 .rpc_release
= nfs4_layoutget_release
,
5495 int nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
)
5497 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5498 struct rpc_task
*task
;
5499 struct rpc_message msg
= {
5500 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
5501 .rpc_argp
= &lgp
->args
,
5502 .rpc_resp
= &lgp
->res
,
5504 struct rpc_task_setup task_setup_data
= {
5505 .rpc_client
= server
->client
,
5506 .rpc_message
= &msg
,
5507 .callback_ops
= &nfs4_layoutget_call_ops
,
5508 .callback_data
= lgp
,
5509 .flags
= RPC_TASK_ASYNC
,
5513 dprintk("--> %s\n", __func__
);
5515 lgp
->res
.layout
.buf
= (void *)__get_free_page(GFP_NOFS
);
5516 if (lgp
->res
.layout
.buf
== NULL
) {
5517 nfs4_layoutget_release(lgp
);
5521 lgp
->res
.seq_res
.sr_slot
= NULL
;
5522 task
= rpc_run_task(&task_setup_data
);
5524 return PTR_ERR(task
);
5525 status
= nfs4_wait_for_completion_rpc_task(task
);
5527 status
= task
->tk_status
;
5529 status
= pnfs_layout_process(lgp
);
5531 dprintk("<-- %s status=%d\n", __func__
, status
);
5536 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5538 struct nfs4_getdeviceinfo_args args
= {
5541 struct nfs4_getdeviceinfo_res res
= {
5544 struct rpc_message msg
= {
5545 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
5551 dprintk("--> %s\n", __func__
);
5552 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
5553 dprintk("<-- %s status=%d\n", __func__
, status
);
5558 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5560 struct nfs4_exception exception
= { };
5564 err
= nfs4_handle_exception(server
,
5565 _nfs4_proc_getdeviceinfo(server
, pdev
),
5567 } while (exception
.retry
);
5570 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
5572 #endif /* CONFIG_NFS_V4_1 */
5574 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
5575 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5576 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5577 .recover_open
= nfs4_open_reclaim
,
5578 .recover_lock
= nfs4_lock_reclaim
,
5579 .establish_clid
= nfs4_init_clientid
,
5580 .get_clid_cred
= nfs4_get_setclientid_cred
,
5583 #if defined(CONFIG_NFS_V4_1)
5584 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
5585 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5586 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5587 .recover_open
= nfs4_open_reclaim
,
5588 .recover_lock
= nfs4_lock_reclaim
,
5589 .establish_clid
= nfs41_init_clientid
,
5590 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5591 .reclaim_complete
= nfs41_proc_reclaim_complete
,
5593 #endif /* CONFIG_NFS_V4_1 */
5595 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
5596 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5597 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5598 .recover_open
= nfs4_open_expired
,
5599 .recover_lock
= nfs4_lock_expired
,
5600 .establish_clid
= nfs4_init_clientid
,
5601 .get_clid_cred
= nfs4_get_setclientid_cred
,
5604 #if defined(CONFIG_NFS_V4_1)
5605 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
5606 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5607 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5608 .recover_open
= nfs4_open_expired
,
5609 .recover_lock
= nfs4_lock_expired
,
5610 .establish_clid
= nfs41_init_clientid
,
5611 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5613 #endif /* CONFIG_NFS_V4_1 */
5615 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
5616 .sched_state_renewal
= nfs4_proc_async_renew
,
5617 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
5618 .renew_lease
= nfs4_proc_renew
,
5621 #if defined(CONFIG_NFS_V4_1)
5622 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
5623 .sched_state_renewal
= nfs41_proc_async_sequence
,
5624 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
5625 .renew_lease
= nfs4_proc_sequence
,
5629 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
5631 .call_sync
= _nfs4_call_sync
,
5632 .validate_stateid
= nfs4_validate_delegation_stateid
,
5633 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
5634 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
5635 .state_renewal_ops
= &nfs40_state_renewal_ops
,
5638 #if defined(CONFIG_NFS_V4_1)
5639 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
5641 .call_sync
= _nfs4_call_sync_session
,
5642 .validate_stateid
= nfs41_validate_delegation_stateid
,
5643 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
5644 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
5645 .state_renewal_ops
= &nfs41_state_renewal_ops
,
5649 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
5650 [0] = &nfs_v4_0_minor_ops
,
5651 #if defined(CONFIG_NFS_V4_1)
5652 [1] = &nfs_v4_1_minor_ops
,
5656 static const struct inode_operations nfs4_file_inode_operations
= {
5657 .permission
= nfs_permission
,
5658 .getattr
= nfs_getattr
,
5659 .setattr
= nfs_setattr
,
5660 .getxattr
= generic_getxattr
,
5661 .setxattr
= generic_setxattr
,
5662 .listxattr
= generic_listxattr
,
5663 .removexattr
= generic_removexattr
,
5666 const struct nfs_rpc_ops nfs_v4_clientops
= {
5667 .version
= 4, /* protocol version */
5668 .dentry_ops
= &nfs4_dentry_operations
,
5669 .dir_inode_ops
= &nfs4_dir_inode_operations
,
5670 .file_inode_ops
= &nfs4_file_inode_operations
,
5671 .getroot
= nfs4_proc_get_root
,
5672 .getattr
= nfs4_proc_getattr
,
5673 .setattr
= nfs4_proc_setattr
,
5674 .lookupfh
= nfs4_proc_lookupfh
,
5675 .lookup
= nfs4_proc_lookup
,
5676 .access
= nfs4_proc_access
,
5677 .readlink
= nfs4_proc_readlink
,
5678 .create
= nfs4_proc_create
,
5679 .remove
= nfs4_proc_remove
,
5680 .unlink_setup
= nfs4_proc_unlink_setup
,
5681 .unlink_done
= nfs4_proc_unlink_done
,
5682 .rename
= nfs4_proc_rename
,
5683 .rename_setup
= nfs4_proc_rename_setup
,
5684 .rename_done
= nfs4_proc_rename_done
,
5685 .link
= nfs4_proc_link
,
5686 .symlink
= nfs4_proc_symlink
,
5687 .mkdir
= nfs4_proc_mkdir
,
5688 .rmdir
= nfs4_proc_remove
,
5689 .readdir
= nfs4_proc_readdir
,
5690 .mknod
= nfs4_proc_mknod
,
5691 .statfs
= nfs4_proc_statfs
,
5692 .fsinfo
= nfs4_proc_fsinfo
,
5693 .pathconf
= nfs4_proc_pathconf
,
5694 .set_capabilities
= nfs4_server_capabilities
,
5695 .decode_dirent
= nfs4_decode_dirent
,
5696 .read_setup
= nfs4_proc_read_setup
,
5697 .read_done
= nfs4_read_done
,
5698 .write_setup
= nfs4_proc_write_setup
,
5699 .write_done
= nfs4_write_done
,
5700 .commit_setup
= nfs4_proc_commit_setup
,
5701 .commit_done
= nfs4_commit_done
,
5702 .lock
= nfs4_proc_lock
,
5703 .clear_acl_cache
= nfs4_zap_acl_attr
,
5704 .close_context
= nfs4_close_context
,
5705 .open_context
= nfs4_atomic_open
,
5706 .init_client
= nfs4_init_client
,
5709 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
5710 .prefix
= XATTR_NAME_NFSV4_ACL
,
5711 .list
= nfs4_xattr_list_nfs4_acl
,
5712 .get
= nfs4_xattr_get_nfs4_acl
,
5713 .set
= nfs4_xattr_set_nfs4_acl
,
5716 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
5717 &nfs4_xattr_nfs4_acl_handler
,