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/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/nfs_idmap.h>
55 #include <linux/sunrpc/bc_xprt.h>
56 #include <linux/xattr.h>
57 #include <linux/utsname.h>
58 #include <linux/freezer.h>
61 #include "delegation.h"
68 #define NFSDBG_FACILITY NFSDBG_PROC
70 #define NFS4_POLL_RETRY_MIN (HZ/10)
71 #define NFS4_POLL_RETRY_MAX (15*HZ)
73 #define NFS4_MAX_LOOP_ON_RECOVER (10)
76 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
77 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
78 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
79 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
80 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
81 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*);
82 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
83 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
84 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
85 struct nfs4_state
*state
);
86 #ifdef CONFIG_NFS_V4_1
87 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*);
88 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*);
90 /* Prevent leaks of NFSv4 errors into userland */
91 static int nfs4_map_errors(int err
)
96 case -NFS4ERR_RESOURCE
:
98 case -NFS4ERR_WRONGSEC
:
100 case -NFS4ERR_BADOWNER
:
101 case -NFS4ERR_BADNAME
:
103 case -NFS4ERR_SHARE_DENIED
:
105 case -NFS4ERR_MINOR_VERS_MISMATCH
:
106 return -EPROTONOSUPPORT
;
107 case -NFS4ERR_ACCESS
:
110 dprintk("%s could not handle NFSv4 error %d\n",
118 * This is our standard bitmap for GETATTR requests.
120 const u32 nfs4_fattr_bitmap
[3] = {
122 | FATTR4_WORD0_CHANGE
125 | FATTR4_WORD0_FILEID
,
127 | FATTR4_WORD1_NUMLINKS
129 | FATTR4_WORD1_OWNER_GROUP
130 | FATTR4_WORD1_RAWDEV
131 | FATTR4_WORD1_SPACE_USED
132 | FATTR4_WORD1_TIME_ACCESS
133 | FATTR4_WORD1_TIME_METADATA
134 | FATTR4_WORD1_TIME_MODIFY
137 static const u32 nfs4_pnfs_open_bitmap
[3] = {
139 | FATTR4_WORD0_CHANGE
142 | FATTR4_WORD0_FILEID
,
144 | FATTR4_WORD1_NUMLINKS
146 | FATTR4_WORD1_OWNER_GROUP
147 | FATTR4_WORD1_RAWDEV
148 | FATTR4_WORD1_SPACE_USED
149 | FATTR4_WORD1_TIME_ACCESS
150 | FATTR4_WORD1_TIME_METADATA
151 | FATTR4_WORD1_TIME_MODIFY
,
152 FATTR4_WORD2_MDSTHRESHOLD
155 const u32 nfs4_statfs_bitmap
[2] = {
156 FATTR4_WORD0_FILES_AVAIL
157 | FATTR4_WORD0_FILES_FREE
158 | FATTR4_WORD0_FILES_TOTAL
,
159 FATTR4_WORD1_SPACE_AVAIL
160 | FATTR4_WORD1_SPACE_FREE
161 | FATTR4_WORD1_SPACE_TOTAL
164 const u32 nfs4_pathconf_bitmap
[2] = {
166 | FATTR4_WORD0_MAXNAME
,
170 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
171 | FATTR4_WORD0_MAXREAD
172 | FATTR4_WORD0_MAXWRITE
173 | FATTR4_WORD0_LEASE_TIME
,
174 FATTR4_WORD1_TIME_DELTA
175 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
176 FATTR4_WORD2_LAYOUT_BLKSIZE
179 const u32 nfs4_fs_locations_bitmap
[2] = {
181 | FATTR4_WORD0_CHANGE
184 | FATTR4_WORD0_FILEID
185 | FATTR4_WORD0_FS_LOCATIONS
,
187 | FATTR4_WORD1_NUMLINKS
189 | FATTR4_WORD1_OWNER_GROUP
190 | FATTR4_WORD1_RAWDEV
191 | FATTR4_WORD1_SPACE_USED
192 | FATTR4_WORD1_TIME_ACCESS
193 | FATTR4_WORD1_TIME_METADATA
194 | FATTR4_WORD1_TIME_MODIFY
195 | FATTR4_WORD1_MOUNTED_ON_FILEID
198 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
199 struct nfs4_readdir_arg
*readdir
)
203 BUG_ON(readdir
->count
< 80);
205 readdir
->cookie
= cookie
;
206 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
211 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
216 * NFSv4 servers do not return entries for '.' and '..'
217 * Therefore, we fake these entries here. We let '.'
218 * have cookie 0 and '..' have cookie 1. Note that
219 * when talking to the server, we always send cookie 0
222 start
= p
= kmap_atomic(*readdir
->pages
);
225 *p
++ = xdr_one
; /* next */
226 *p
++ = xdr_zero
; /* cookie, first word */
227 *p
++ = xdr_one
; /* cookie, second word */
228 *p
++ = xdr_one
; /* entry len */
229 memcpy(p
, ".\0\0\0", 4); /* entry */
231 *p
++ = xdr_one
; /* bitmap length */
232 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
233 *p
++ = htonl(8); /* attribute buffer length */
234 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
237 *p
++ = xdr_one
; /* next */
238 *p
++ = xdr_zero
; /* cookie, first word */
239 *p
++ = xdr_two
; /* cookie, second word */
240 *p
++ = xdr_two
; /* entry len */
241 memcpy(p
, "..\0\0", 4); /* entry */
243 *p
++ = xdr_one
; /* bitmap length */
244 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
245 *p
++ = htonl(8); /* attribute buffer length */
246 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
248 readdir
->pgbase
= (char *)p
- (char *)start
;
249 readdir
->count
-= readdir
->pgbase
;
250 kunmap_atomic(start
);
253 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
259 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
260 nfs_wait_bit_killable
, TASK_KILLABLE
);
264 if (clp
->cl_cons_state
< 0)
265 return clp
->cl_cons_state
;
269 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
276 *timeout
= NFS4_POLL_RETRY_MIN
;
277 if (*timeout
> NFS4_POLL_RETRY_MAX
)
278 *timeout
= NFS4_POLL_RETRY_MAX
;
279 freezable_schedule_timeout_killable(*timeout
);
280 if (fatal_signal_pending(current
))
286 /* This is the error handling routine for processes that are allowed
289 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
291 struct nfs_client
*clp
= server
->nfs_client
;
292 struct nfs4_state
*state
= exception
->state
;
293 struct inode
*inode
= exception
->inode
;
296 exception
->retry
= 0;
300 case -NFS4ERR_OPENMODE
:
301 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
302 nfs4_inode_return_delegation(inode
);
303 exception
->retry
= 1;
308 nfs4_schedule_stateid_recovery(server
, state
);
309 goto wait_on_recovery
;
310 case -NFS4ERR_DELEG_REVOKED
:
311 case -NFS4ERR_ADMIN_REVOKED
:
312 case -NFS4ERR_BAD_STATEID
:
315 nfs_remove_bad_delegation(state
->inode
);
316 nfs4_schedule_stateid_recovery(server
, state
);
317 goto wait_on_recovery
;
318 case -NFS4ERR_EXPIRED
:
320 nfs4_schedule_stateid_recovery(server
, state
);
321 case -NFS4ERR_STALE_STATEID
:
322 case -NFS4ERR_STALE_CLIENTID
:
323 nfs4_schedule_lease_recovery(clp
);
324 goto wait_on_recovery
;
325 #if defined(CONFIG_NFS_V4_1)
326 case -NFS4ERR_BADSESSION
:
327 case -NFS4ERR_BADSLOT
:
328 case -NFS4ERR_BAD_HIGH_SLOT
:
329 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
330 case -NFS4ERR_DEADSESSION
:
331 case -NFS4ERR_SEQ_FALSE_RETRY
:
332 case -NFS4ERR_SEQ_MISORDERED
:
333 dprintk("%s ERROR: %d Reset session\n", __func__
,
335 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
336 exception
->retry
= 1;
338 #endif /* defined(CONFIG_NFS_V4_1) */
339 case -NFS4ERR_FILE_OPEN
:
340 if (exception
->timeout
> HZ
) {
341 /* We have retried a decent amount, time to
350 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
353 case -NFS4ERR_RETRY_UNCACHED_REP
:
354 case -NFS4ERR_OLD_STATEID
:
355 exception
->retry
= 1;
357 case -NFS4ERR_BADOWNER
:
358 /* The following works around a Linux server bug! */
359 case -NFS4ERR_BADNAME
:
360 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
361 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
362 exception
->retry
= 1;
363 printk(KERN_WARNING
"NFS: v4 server %s "
364 "does not accept raw "
366 "Reenabling the idmapper.\n",
367 server
->nfs_client
->cl_hostname
);
370 /* We failed to handle the error */
371 return nfs4_map_errors(ret
);
373 ret
= nfs4_wait_clnt_recover(clp
);
375 exception
->retry
= 1;
380 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
382 spin_lock(&clp
->cl_lock
);
383 if (time_before(clp
->cl_last_renewal
,timestamp
))
384 clp
->cl_last_renewal
= timestamp
;
385 spin_unlock(&clp
->cl_lock
);
388 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
390 do_renew_lease(server
->nfs_client
, timestamp
);
393 #if defined(CONFIG_NFS_V4_1)
396 * nfs4_free_slot - free a slot and efficiently update slot table.
398 * freeing a slot is trivially done by clearing its respective bit
400 * If the freed slotid equals highest_used_slotid we want to update it
401 * so that the server would be able to size down the slot table if needed,
402 * otherwise we know that the highest_used_slotid is still in use.
403 * When updating highest_used_slotid there may be "holes" in the bitmap
404 * so we need to scan down from highest_used_slotid to 0 looking for the now
405 * highest slotid in use.
406 * If none found, highest_used_slotid is set to NFS4_NO_SLOT.
408 * Must be called while holding tbl->slot_tbl_lock
411 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u32 slotid
)
413 BUG_ON(slotid
>= NFS4_MAX_SLOT_TABLE
);
414 /* clear used bit in bitmap */
415 __clear_bit(slotid
, tbl
->used_slots
);
417 /* update highest_used_slotid when it is freed */
418 if (slotid
== tbl
->highest_used_slotid
) {
419 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
420 if (slotid
< tbl
->max_slots
)
421 tbl
->highest_used_slotid
= slotid
;
423 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
425 dprintk("%s: slotid %u highest_used_slotid %d\n", __func__
,
426 slotid
, tbl
->highest_used_slotid
);
429 bool nfs4_set_task_privileged(struct rpc_task
*task
, void *dummy
)
431 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
436 * Signal state manager thread if session fore channel is drained
438 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
440 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
441 rpc_wake_up_first(&ses
->fc_slot_table
.slot_tbl_waitq
,
442 nfs4_set_task_privileged
, NULL
);
446 if (ses
->fc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
449 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
450 complete(&ses
->fc_slot_table
.complete
);
454 * Signal state manager thread if session back channel is drained
456 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
458 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
459 ses
->bc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
461 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
462 complete(&ses
->bc_slot_table
.complete
);
465 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
467 struct nfs4_slot_table
*tbl
;
469 tbl
= &res
->sr_session
->fc_slot_table
;
471 /* just wake up the next guy waiting since
472 * we may have not consumed a slot after all */
473 dprintk("%s: No slot\n", __func__
);
477 spin_lock(&tbl
->slot_tbl_lock
);
478 nfs4_free_slot(tbl
, res
->sr_slot
- tbl
->slots
);
479 nfs4_check_drain_fc_complete(res
->sr_session
);
480 spin_unlock(&tbl
->slot_tbl_lock
);
484 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
486 unsigned long timestamp
;
487 struct nfs_client
*clp
;
490 * sr_status remains 1 if an RPC level error occurred. The server
491 * may or may not have processed the sequence operation..
492 * Proceed as if the server received and processed the sequence
495 if (res
->sr_status
== 1)
496 res
->sr_status
= NFS_OK
;
498 /* don't increment the sequence number if the task wasn't sent */
499 if (!RPC_WAS_SENT(task
))
502 /* Check the SEQUENCE operation status */
503 switch (res
->sr_status
) {
505 /* Update the slot's sequence and clientid lease timer */
506 ++res
->sr_slot
->seq_nr
;
507 timestamp
= res
->sr_renewal_time
;
508 clp
= res
->sr_session
->clp
;
509 do_renew_lease(clp
, timestamp
);
510 /* Check sequence flags */
511 if (res
->sr_status_flags
!= 0)
512 nfs4_schedule_lease_recovery(clp
);
515 /* The server detected a resend of the RPC call and
516 * returned NFS4ERR_DELAY as per Section 2.10.6.2
519 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
521 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
522 res
->sr_slot
->seq_nr
);
525 /* Just update the slot sequence no. */
526 ++res
->sr_slot
->seq_nr
;
529 /* The session may be reset by one of the error handlers. */
530 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
531 nfs41_sequence_free_slot(res
);
534 if (!rpc_restart_call(task
))
536 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
540 static int nfs4_sequence_done(struct rpc_task
*task
,
541 struct nfs4_sequence_res
*res
)
543 if (res
->sr_session
== NULL
)
545 return nfs41_sequence_done(task
, res
);
549 * nfs4_find_slot - efficiently look for a free slot
551 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
552 * If found, we mark the slot as used, update the highest_used_slotid,
553 * and respectively set up the sequence operation args.
554 * The slot number is returned if found, or NFS4_NO_SLOT otherwise.
556 * Note: must be called with under the slot_tbl_lock.
559 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
562 u32 ret_id
= NFS4_NO_SLOT
;
564 dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n",
565 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
567 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
568 if (slotid
>= tbl
->max_slots
)
570 __set_bit(slotid
, tbl
->used_slots
);
571 if (slotid
> tbl
->highest_used_slotid
||
572 tbl
->highest_used_slotid
== NFS4_NO_SLOT
)
573 tbl
->highest_used_slotid
= slotid
;
576 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
577 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
581 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
582 struct nfs4_sequence_res
*res
, int cache_reply
)
584 args
->sa_session
= NULL
;
585 args
->sa_cache_this
= 0;
587 args
->sa_cache_this
= 1;
588 res
->sr_session
= NULL
;
592 int nfs41_setup_sequence(struct nfs4_session
*session
,
593 struct nfs4_sequence_args
*args
,
594 struct nfs4_sequence_res
*res
,
595 struct rpc_task
*task
)
597 struct nfs4_slot
*slot
;
598 struct nfs4_slot_table
*tbl
;
601 dprintk("--> %s\n", __func__
);
602 /* slot already allocated? */
603 if (res
->sr_slot
!= NULL
)
606 tbl
= &session
->fc_slot_table
;
608 spin_lock(&tbl
->slot_tbl_lock
);
609 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
610 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
611 /* The state manager will wait until the slot table is empty */
612 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
613 spin_unlock(&tbl
->slot_tbl_lock
);
614 dprintk("%s session is draining\n", __func__
);
618 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
619 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
620 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
621 spin_unlock(&tbl
->slot_tbl_lock
);
622 dprintk("%s enforce FIFO order\n", __func__
);
626 slotid
= nfs4_find_slot(tbl
);
627 if (slotid
== NFS4_NO_SLOT
) {
628 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
629 spin_unlock(&tbl
->slot_tbl_lock
);
630 dprintk("<-- %s: no free slots\n", __func__
);
633 spin_unlock(&tbl
->slot_tbl_lock
);
635 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
636 slot
= tbl
->slots
+ slotid
;
637 args
->sa_session
= session
;
638 args
->sa_slotid
= slotid
;
640 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
642 res
->sr_session
= session
;
644 res
->sr_renewal_time
= jiffies
;
645 res
->sr_status_flags
= 0;
647 * sr_status is only set in decode_sequence, and so will remain
648 * set to 1 if an rpc level failure occurs.
653 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
655 int nfs4_setup_sequence(const struct nfs_server
*server
,
656 struct nfs4_sequence_args
*args
,
657 struct nfs4_sequence_res
*res
,
658 struct rpc_task
*task
)
660 struct nfs4_session
*session
= nfs4_get_session(server
);
666 dprintk("--> %s clp %p session %p sr_slot %td\n",
667 __func__
, session
->clp
, session
, res
->sr_slot
?
668 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
670 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
672 dprintk("<-- %s status=%d\n", __func__
, ret
);
676 struct nfs41_call_sync_data
{
677 const struct nfs_server
*seq_server
;
678 struct nfs4_sequence_args
*seq_args
;
679 struct nfs4_sequence_res
*seq_res
;
682 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
684 struct nfs41_call_sync_data
*data
= calldata
;
686 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
688 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
689 data
->seq_res
, task
))
691 rpc_call_start(task
);
694 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
696 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
697 nfs41_call_sync_prepare(task
, calldata
);
700 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
702 struct nfs41_call_sync_data
*data
= calldata
;
704 nfs41_sequence_done(task
, data
->seq_res
);
707 static const struct rpc_call_ops nfs41_call_sync_ops
= {
708 .rpc_call_prepare
= nfs41_call_sync_prepare
,
709 .rpc_call_done
= nfs41_call_sync_done
,
712 static const struct rpc_call_ops nfs41_call_priv_sync_ops
= {
713 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
714 .rpc_call_done
= nfs41_call_sync_done
,
717 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
718 struct nfs_server
*server
,
719 struct rpc_message
*msg
,
720 struct nfs4_sequence_args
*args
,
721 struct nfs4_sequence_res
*res
,
725 struct rpc_task
*task
;
726 struct nfs41_call_sync_data data
= {
727 .seq_server
= server
,
731 struct rpc_task_setup task_setup
= {
734 .callback_ops
= &nfs41_call_sync_ops
,
735 .callback_data
= &data
739 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
740 task
= rpc_run_task(&task_setup
);
744 ret
= task
->tk_status
;
750 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
751 struct nfs_server
*server
,
752 struct rpc_message
*msg
,
753 struct nfs4_sequence_args
*args
,
754 struct nfs4_sequence_res
*res
,
757 nfs41_init_sequence(args
, res
, cache_reply
);
758 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, 0);
763 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
764 struct nfs4_sequence_res
*res
, int cache_reply
)
768 static int nfs4_sequence_done(struct rpc_task
*task
,
769 struct nfs4_sequence_res
*res
)
773 #endif /* CONFIG_NFS_V4_1 */
775 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
776 struct nfs_server
*server
,
777 struct rpc_message
*msg
,
778 struct nfs4_sequence_args
*args
,
779 struct nfs4_sequence_res
*res
,
782 nfs41_init_sequence(args
, res
, cache_reply
);
783 return rpc_call_sync(clnt
, msg
, 0);
787 int nfs4_call_sync(struct rpc_clnt
*clnt
,
788 struct nfs_server
*server
,
789 struct rpc_message
*msg
,
790 struct nfs4_sequence_args
*args
,
791 struct nfs4_sequence_res
*res
,
794 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
795 args
, res
, cache_reply
);
798 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
800 struct nfs_inode
*nfsi
= NFS_I(dir
);
802 spin_lock(&dir
->i_lock
);
803 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
804 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
805 nfs_force_lookup_revalidate(dir
);
806 dir
->i_version
= cinfo
->after
;
807 spin_unlock(&dir
->i_lock
);
810 struct nfs4_opendata
{
812 struct nfs_openargs o_arg
;
813 struct nfs_openres o_res
;
814 struct nfs_open_confirmargs c_arg
;
815 struct nfs_open_confirmres c_res
;
816 struct nfs4_string owner_name
;
817 struct nfs4_string group_name
;
818 struct nfs_fattr f_attr
;
820 struct dentry
*dentry
;
821 struct nfs4_state_owner
*owner
;
822 struct nfs4_state
*state
;
824 unsigned long timestamp
;
825 unsigned int rpc_done
: 1;
831 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
833 p
->o_res
.f_attr
= &p
->f_attr
;
834 p
->o_res
.seqid
= p
->o_arg
.seqid
;
835 p
->c_res
.seqid
= p
->c_arg
.seqid
;
836 p
->o_res
.server
= p
->o_arg
.server
;
837 nfs_fattr_init(&p
->f_attr
);
838 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
841 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
842 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
843 const struct iattr
*attrs
,
846 struct dentry
*parent
= dget_parent(dentry
);
847 struct inode
*dir
= parent
->d_inode
;
848 struct nfs_server
*server
= NFS_SERVER(dir
);
849 struct nfs4_opendata
*p
;
851 p
= kzalloc(sizeof(*p
), gfp_mask
);
854 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
855 if (p
->o_arg
.seqid
== NULL
)
857 nfs_sb_active(dentry
->d_sb
);
858 p
->dentry
= dget(dentry
);
861 atomic_inc(&sp
->so_count
);
862 p
->o_arg
.fh
= NFS_FH(dir
);
863 p
->o_arg
.open_flags
= flags
;
864 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
865 /* ask server to check for all possible rights as results are cached */
866 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
867 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
868 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
869 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
870 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
871 p
->o_arg
.name
= &dentry
->d_name
;
872 p
->o_arg
.server
= server
;
873 p
->o_arg
.bitmask
= server
->attr_bitmask
;
874 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
875 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
876 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
879 p
->o_arg
.u
.attrs
= &p
->attrs
;
880 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
883 verf
[1] = current
->pid
;
884 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
885 sizeof(p
->o_arg
.u
.verifier
.data
));
887 p
->c_arg
.fh
= &p
->o_res
.fh
;
888 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
889 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
890 nfs4_init_opendata_res(p
);
900 static void nfs4_opendata_free(struct kref
*kref
)
902 struct nfs4_opendata
*p
= container_of(kref
,
903 struct nfs4_opendata
, kref
);
904 struct super_block
*sb
= p
->dentry
->d_sb
;
906 nfs_free_seqid(p
->o_arg
.seqid
);
907 if (p
->state
!= NULL
)
908 nfs4_put_open_state(p
->state
);
909 nfs4_put_state_owner(p
->owner
);
913 nfs_fattr_free_names(&p
->f_attr
);
917 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
920 kref_put(&p
->kref
, nfs4_opendata_free
);
923 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
927 ret
= rpc_wait_for_completion_task(task
);
931 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
935 if (open_mode
& (O_EXCL
|O_TRUNC
))
937 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
939 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
940 && state
->n_rdonly
!= 0;
943 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
944 && state
->n_wronly
!= 0;
946 case FMODE_READ
|FMODE_WRITE
:
947 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
948 && state
->n_rdwr
!= 0;
954 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
956 if (delegation
== NULL
)
958 if ((delegation
->type
& fmode
) != fmode
)
960 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
962 nfs_mark_delegation_referenced(delegation
);
966 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
975 case FMODE_READ
|FMODE_WRITE
:
978 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
981 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
983 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
984 nfs4_stateid_copy(&state
->stateid
, stateid
);
985 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
988 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
991 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
993 case FMODE_READ
|FMODE_WRITE
:
994 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
998 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1000 write_seqlock(&state
->seqlock
);
1001 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
1002 write_sequnlock(&state
->seqlock
);
1005 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1008 * Protect the call to nfs4_state_set_mode_locked and
1009 * serialise the stateid update
1011 write_seqlock(&state
->seqlock
);
1012 if (deleg_stateid
!= NULL
) {
1013 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1014 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1016 if (open_stateid
!= NULL
)
1017 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1018 write_sequnlock(&state
->seqlock
);
1019 spin_lock(&state
->owner
->so_lock
);
1020 update_open_stateflags(state
, fmode
);
1021 spin_unlock(&state
->owner
->so_lock
);
1024 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1026 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1027 struct nfs_delegation
*deleg_cur
;
1030 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1033 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1034 if (deleg_cur
== NULL
)
1037 spin_lock(&deleg_cur
->lock
);
1038 if (nfsi
->delegation
!= deleg_cur
||
1039 (deleg_cur
->type
& fmode
) != fmode
)
1040 goto no_delegation_unlock
;
1042 if (delegation
== NULL
)
1043 delegation
= &deleg_cur
->stateid
;
1044 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1045 goto no_delegation_unlock
;
1047 nfs_mark_delegation_referenced(deleg_cur
);
1048 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1050 no_delegation_unlock
:
1051 spin_unlock(&deleg_cur
->lock
);
1055 if (!ret
&& open_stateid
!= NULL
) {
1056 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1064 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1066 struct nfs_delegation
*delegation
;
1069 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1070 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1075 nfs4_inode_return_delegation(inode
);
1078 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1080 struct nfs4_state
*state
= opendata
->state
;
1081 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1082 struct nfs_delegation
*delegation
;
1083 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1084 fmode_t fmode
= opendata
->o_arg
.fmode
;
1085 nfs4_stateid stateid
;
1089 if (can_open_cached(state
, fmode
, open_mode
)) {
1090 spin_lock(&state
->owner
->so_lock
);
1091 if (can_open_cached(state
, fmode
, open_mode
)) {
1092 update_open_stateflags(state
, fmode
);
1093 spin_unlock(&state
->owner
->so_lock
);
1094 goto out_return_state
;
1096 spin_unlock(&state
->owner
->so_lock
);
1099 delegation
= rcu_dereference(nfsi
->delegation
);
1100 if (!can_open_delegated(delegation
, fmode
)) {
1104 /* Save the delegation */
1105 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1107 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1112 /* Try to update the stateid using the delegation */
1113 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1114 goto out_return_state
;
1117 return ERR_PTR(ret
);
1119 atomic_inc(&state
->count
);
1123 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1125 struct inode
*inode
;
1126 struct nfs4_state
*state
= NULL
;
1127 struct nfs_delegation
*delegation
;
1130 if (!data
->rpc_done
) {
1131 state
= nfs4_try_open_cached(data
);
1136 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1138 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1139 ret
= PTR_ERR(inode
);
1143 state
= nfs4_get_open_state(inode
, data
->owner
);
1146 if (data
->o_res
.delegation_type
!= 0) {
1147 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
1148 int delegation_flags
= 0;
1151 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1153 delegation_flags
= delegation
->flags
;
1155 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1156 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1157 "returning a delegation for "
1158 "OPEN(CLAIM_DELEGATE_CUR)\n",
1160 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1161 nfs_inode_set_delegation(state
->inode
,
1162 data
->owner
->so_cred
,
1165 nfs_inode_reclaim_delegation(state
->inode
,
1166 data
->owner
->so_cred
,
1170 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1178 return ERR_PTR(ret
);
1181 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1183 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1184 struct nfs_open_context
*ctx
;
1186 spin_lock(&state
->inode
->i_lock
);
1187 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1188 if (ctx
->state
!= state
)
1190 get_nfs_open_context(ctx
);
1191 spin_unlock(&state
->inode
->i_lock
);
1194 spin_unlock(&state
->inode
->i_lock
);
1195 return ERR_PTR(-ENOENT
);
1198 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1200 struct nfs4_opendata
*opendata
;
1202 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1203 if (opendata
== NULL
)
1204 return ERR_PTR(-ENOMEM
);
1205 opendata
->state
= state
;
1206 atomic_inc(&state
->count
);
1210 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1212 struct nfs4_state
*newstate
;
1215 opendata
->o_arg
.open_flags
= 0;
1216 opendata
->o_arg
.fmode
= fmode
;
1217 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1218 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1219 nfs4_init_opendata_res(opendata
);
1220 ret
= _nfs4_recover_proc_open(opendata
);
1223 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1224 if (IS_ERR(newstate
))
1225 return PTR_ERR(newstate
);
1226 nfs4_close_state(newstate
, fmode
);
1231 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1233 struct nfs4_state
*newstate
;
1236 /* memory barrier prior to reading state->n_* */
1237 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1239 if (state
->n_rdwr
!= 0) {
1240 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1241 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1244 if (newstate
!= state
)
1247 if (state
->n_wronly
!= 0) {
1248 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1249 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1252 if (newstate
!= state
)
1255 if (state
->n_rdonly
!= 0) {
1256 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1257 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1260 if (newstate
!= state
)
1264 * We may have performed cached opens for all three recoveries.
1265 * Check if we need to update the current stateid.
1267 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1268 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1269 write_seqlock(&state
->seqlock
);
1270 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1271 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1272 write_sequnlock(&state
->seqlock
);
1279 * reclaim state on the server after a reboot.
1281 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1283 struct nfs_delegation
*delegation
;
1284 struct nfs4_opendata
*opendata
;
1285 fmode_t delegation_type
= 0;
1288 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1289 if (IS_ERR(opendata
))
1290 return PTR_ERR(opendata
);
1291 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1292 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1294 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1295 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1296 delegation_type
= delegation
->type
;
1298 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1299 status
= nfs4_open_recover(opendata
, state
);
1300 nfs4_opendata_put(opendata
);
1304 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1306 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1307 struct nfs4_exception exception
= { };
1310 err
= _nfs4_do_open_reclaim(ctx
, state
);
1311 if (err
!= -NFS4ERR_DELAY
)
1313 nfs4_handle_exception(server
, err
, &exception
);
1314 } while (exception
.retry
);
1318 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1320 struct nfs_open_context
*ctx
;
1323 ctx
= nfs4_state_find_open_context(state
);
1325 return PTR_ERR(ctx
);
1326 ret
= nfs4_do_open_reclaim(ctx
, state
);
1327 put_nfs_open_context(ctx
);
1331 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1333 struct nfs4_opendata
*opendata
;
1336 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1337 if (IS_ERR(opendata
))
1338 return PTR_ERR(opendata
);
1339 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1340 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1341 ret
= nfs4_open_recover(opendata
, state
);
1342 nfs4_opendata_put(opendata
);
1346 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1348 struct nfs4_exception exception
= { };
1349 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1352 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1358 case -NFS4ERR_BADSESSION
:
1359 case -NFS4ERR_BADSLOT
:
1360 case -NFS4ERR_BAD_HIGH_SLOT
:
1361 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1362 case -NFS4ERR_DEADSESSION
:
1363 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1365 case -NFS4ERR_STALE_CLIENTID
:
1366 case -NFS4ERR_STALE_STATEID
:
1367 case -NFS4ERR_EXPIRED
:
1368 /* Don't recall a delegation if it was lost */
1369 nfs4_schedule_lease_recovery(server
->nfs_client
);
1373 * The show must go on: exit, but mark the
1374 * stateid as needing recovery.
1376 case -NFS4ERR_DELEG_REVOKED
:
1377 case -NFS4ERR_ADMIN_REVOKED
:
1378 case -NFS4ERR_BAD_STATEID
:
1379 nfs_inode_find_state_and_recover(state
->inode
,
1381 nfs4_schedule_stateid_recovery(server
, state
);
1384 * User RPCSEC_GSS context has expired.
1385 * We cannot recover this stateid now, so
1386 * skip it and allow recovery thread to
1393 err
= nfs4_handle_exception(server
, err
, &exception
);
1394 } while (exception
.retry
);
1399 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1401 struct nfs4_opendata
*data
= calldata
;
1403 data
->rpc_status
= task
->tk_status
;
1404 if (data
->rpc_status
== 0) {
1405 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1406 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1407 renew_lease(data
->o_res
.server
, data
->timestamp
);
1412 static void nfs4_open_confirm_release(void *calldata
)
1414 struct nfs4_opendata
*data
= calldata
;
1415 struct nfs4_state
*state
= NULL
;
1417 /* If this request hasn't been cancelled, do nothing */
1418 if (data
->cancelled
== 0)
1420 /* In case of error, no cleanup! */
1421 if (!data
->rpc_done
)
1423 state
= nfs4_opendata_to_nfs4_state(data
);
1425 nfs4_close_state(state
, data
->o_arg
.fmode
);
1427 nfs4_opendata_put(data
);
1430 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1431 .rpc_call_done
= nfs4_open_confirm_done
,
1432 .rpc_release
= nfs4_open_confirm_release
,
1436 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1438 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1440 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1441 struct rpc_task
*task
;
1442 struct rpc_message msg
= {
1443 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1444 .rpc_argp
= &data
->c_arg
,
1445 .rpc_resp
= &data
->c_res
,
1446 .rpc_cred
= data
->owner
->so_cred
,
1448 struct rpc_task_setup task_setup_data
= {
1449 .rpc_client
= server
->client
,
1450 .rpc_message
= &msg
,
1451 .callback_ops
= &nfs4_open_confirm_ops
,
1452 .callback_data
= data
,
1453 .workqueue
= nfsiod_workqueue
,
1454 .flags
= RPC_TASK_ASYNC
,
1458 kref_get(&data
->kref
);
1460 data
->rpc_status
= 0;
1461 data
->timestamp
= jiffies
;
1462 task
= rpc_run_task(&task_setup_data
);
1464 return PTR_ERR(task
);
1465 status
= nfs4_wait_for_completion_rpc_task(task
);
1467 data
->cancelled
= 1;
1470 status
= data
->rpc_status
;
1475 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1477 struct nfs4_opendata
*data
= calldata
;
1478 struct nfs4_state_owner
*sp
= data
->owner
;
1480 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1483 * Check if we still need to send an OPEN call, or if we can use
1484 * a delegation instead.
1486 if (data
->state
!= NULL
) {
1487 struct nfs_delegation
*delegation
;
1489 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1492 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1493 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1494 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1495 goto unlock_no_action
;
1498 /* Update client id. */
1499 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1500 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1501 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1502 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1504 data
->timestamp
= jiffies
;
1505 if (nfs4_setup_sequence(data
->o_arg
.server
,
1506 &data
->o_arg
.seq_args
,
1507 &data
->o_res
.seq_res
, task
))
1509 rpc_call_start(task
);
1514 task
->tk_action
= NULL
;
1518 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1520 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1521 nfs4_open_prepare(task
, calldata
);
1524 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1526 struct nfs4_opendata
*data
= calldata
;
1528 data
->rpc_status
= task
->tk_status
;
1530 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1533 if (task
->tk_status
== 0) {
1534 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1538 data
->rpc_status
= -ELOOP
;
1541 data
->rpc_status
= -EISDIR
;
1544 data
->rpc_status
= -ENOTDIR
;
1546 renew_lease(data
->o_res
.server
, data
->timestamp
);
1547 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1548 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1553 static void nfs4_open_release(void *calldata
)
1555 struct nfs4_opendata
*data
= calldata
;
1556 struct nfs4_state
*state
= NULL
;
1558 /* If this request hasn't been cancelled, do nothing */
1559 if (data
->cancelled
== 0)
1561 /* In case of error, no cleanup! */
1562 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1564 /* In case we need an open_confirm, no cleanup! */
1565 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1567 state
= nfs4_opendata_to_nfs4_state(data
);
1569 nfs4_close_state(state
, data
->o_arg
.fmode
);
1571 nfs4_opendata_put(data
);
1574 static const struct rpc_call_ops nfs4_open_ops
= {
1575 .rpc_call_prepare
= nfs4_open_prepare
,
1576 .rpc_call_done
= nfs4_open_done
,
1577 .rpc_release
= nfs4_open_release
,
1580 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1581 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1582 .rpc_call_done
= nfs4_open_done
,
1583 .rpc_release
= nfs4_open_release
,
1586 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1588 struct inode
*dir
= data
->dir
->d_inode
;
1589 struct nfs_server
*server
= NFS_SERVER(dir
);
1590 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1591 struct nfs_openres
*o_res
= &data
->o_res
;
1592 struct rpc_task
*task
;
1593 struct rpc_message msg
= {
1594 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1597 .rpc_cred
= data
->owner
->so_cred
,
1599 struct rpc_task_setup task_setup_data
= {
1600 .rpc_client
= server
->client
,
1601 .rpc_message
= &msg
,
1602 .callback_ops
= &nfs4_open_ops
,
1603 .callback_data
= data
,
1604 .workqueue
= nfsiod_workqueue
,
1605 .flags
= RPC_TASK_ASYNC
,
1609 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1610 kref_get(&data
->kref
);
1612 data
->rpc_status
= 0;
1613 data
->cancelled
= 0;
1615 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1616 task
= rpc_run_task(&task_setup_data
);
1618 return PTR_ERR(task
);
1619 status
= nfs4_wait_for_completion_rpc_task(task
);
1621 data
->cancelled
= 1;
1624 status
= data
->rpc_status
;
1630 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1632 struct inode
*dir
= data
->dir
->d_inode
;
1633 struct nfs_openres
*o_res
= &data
->o_res
;
1636 status
= nfs4_run_open_task(data
, 1);
1637 if (status
!= 0 || !data
->rpc_done
)
1640 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1642 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1643 status
= _nfs4_proc_open_confirm(data
);
1651 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1652 struct nfs4_opendata
*opendata
,
1653 struct nfs4_state
*state
, fmode_t fmode
)
1655 struct nfs_access_entry cache
;
1658 /* access call failed or for some reason the server doesn't
1659 * support any access modes -- defer access call until later */
1660 if (opendata
->o_res
.access_supported
== 0)
1664 if (fmode
& FMODE_READ
)
1666 if (fmode
& FMODE_WRITE
)
1668 if (fmode
& FMODE_EXEC
)
1672 cache
.jiffies
= jiffies
;
1673 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1674 nfs_access_add_cache(state
->inode
, &cache
);
1676 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_WRITE
| MAY_EXEC
)) == 0)
1679 /* even though OPEN succeeded, access is denied. Close the file */
1680 nfs4_close_state(state
, fmode
);
1681 return -NFS4ERR_ACCESS
;
1685 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1687 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1689 struct inode
*dir
= data
->dir
->d_inode
;
1690 struct nfs_server
*server
= NFS_SERVER(dir
);
1691 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1692 struct nfs_openres
*o_res
= &data
->o_res
;
1695 status
= nfs4_run_open_task(data
, 0);
1696 if (!data
->rpc_done
)
1699 if (status
== -NFS4ERR_BADNAME
&&
1700 !(o_arg
->open_flags
& O_CREAT
))
1705 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1707 if (o_arg
->open_flags
& O_CREAT
)
1708 update_changeattr(dir
, &o_res
->cinfo
);
1709 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1710 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1711 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1712 status
= _nfs4_proc_open_confirm(data
);
1716 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1717 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1721 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1726 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1727 ret
= nfs4_wait_clnt_recover(clp
);
1730 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1731 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1733 nfs4_schedule_state_manager(clp
);
1739 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1741 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1746 * reclaim state on the server after a network partition.
1747 * Assumes caller holds the appropriate lock
1749 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1751 struct nfs4_opendata
*opendata
;
1754 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1755 if (IS_ERR(opendata
))
1756 return PTR_ERR(opendata
);
1757 ret
= nfs4_open_recover(opendata
, state
);
1759 d_drop(ctx
->dentry
);
1760 nfs4_opendata_put(opendata
);
1764 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1766 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1767 struct nfs4_exception exception
= { };
1771 err
= _nfs4_open_expired(ctx
, state
);
1775 case -NFS4ERR_GRACE
:
1776 case -NFS4ERR_DELAY
:
1777 nfs4_handle_exception(server
, err
, &exception
);
1780 } while (exception
.retry
);
1785 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1787 struct nfs_open_context
*ctx
;
1790 ctx
= nfs4_state_find_open_context(state
);
1792 return PTR_ERR(ctx
);
1793 ret
= nfs4_do_open_expired(ctx
, state
);
1794 put_nfs_open_context(ctx
);
1798 #if defined(CONFIG_NFS_V4_1)
1799 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1801 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1802 nfs4_stateid
*stateid
= &state
->stateid
;
1805 /* If a state reset has been done, test_stateid is unneeded */
1806 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1809 status
= nfs41_test_stateid(server
, stateid
);
1810 if (status
!= NFS_OK
) {
1811 /* Free the stateid unless the server explicitly
1812 * informs us the stateid is unrecognized. */
1813 if (status
!= -NFS4ERR_BAD_STATEID
)
1814 nfs41_free_stateid(server
, stateid
);
1815 nfs_remove_bad_delegation(state
->inode
);
1817 write_seqlock(&state
->seqlock
);
1818 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1819 write_sequnlock(&state
->seqlock
);
1820 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1825 * nfs41_check_open_stateid - possibly free an open stateid
1827 * @state: NFSv4 state for an inode
1829 * Returns NFS_OK if recovery for this stateid is now finished.
1830 * Otherwise a negative NFS4ERR value is returned.
1832 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1834 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1835 nfs4_stateid
*stateid
= &state
->open_stateid
;
1838 /* If a state reset has been done, test_stateid is unneeded */
1839 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1840 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1841 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1842 return -NFS4ERR_BAD_STATEID
;
1844 status
= nfs41_test_stateid(server
, stateid
);
1845 if (status
!= NFS_OK
) {
1846 /* Free the stateid unless the server explicitly
1847 * informs us the stateid is unrecognized. */
1848 if (status
!= -NFS4ERR_BAD_STATEID
)
1849 nfs41_free_stateid(server
, stateid
);
1851 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1852 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1853 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1858 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1862 nfs41_clear_delegation_stateid(state
);
1863 status
= nfs41_check_open_stateid(state
);
1864 if (status
!= NFS_OK
)
1865 status
= nfs4_open_expired(sp
, state
);
1871 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1872 * fields corresponding to attributes that were used to store the verifier.
1873 * Make sure we clobber those fields in the later setattr call
1875 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1877 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1878 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1879 sattr
->ia_valid
|= ATTR_ATIME
;
1881 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1882 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1883 sattr
->ia_valid
|= ATTR_MTIME
;
1887 * Returns a referenced nfs4_state
1889 static int _nfs4_do_open(struct inode
*dir
,
1890 struct dentry
*dentry
,
1893 struct iattr
*sattr
,
1894 struct rpc_cred
*cred
,
1895 struct nfs4_state
**res
,
1896 struct nfs4_threshold
**ctx_th
)
1898 struct nfs4_state_owner
*sp
;
1899 struct nfs4_state
*state
= NULL
;
1900 struct nfs_server
*server
= NFS_SERVER(dir
);
1901 struct nfs4_opendata
*opendata
;
1904 /* Protect against reboot recovery conflicts */
1906 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1908 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1911 status
= nfs4_recover_expired_lease(server
);
1913 goto err_put_state_owner
;
1914 if (dentry
->d_inode
!= NULL
)
1915 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1917 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1918 if (opendata
== NULL
)
1919 goto err_put_state_owner
;
1921 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
1922 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
1923 if (!opendata
->f_attr
.mdsthreshold
)
1924 goto err_opendata_put
;
1925 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
1927 if (dentry
->d_inode
!= NULL
)
1928 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1930 status
= _nfs4_proc_open(opendata
);
1932 goto err_opendata_put
;
1934 state
= nfs4_opendata_to_nfs4_state(opendata
);
1935 status
= PTR_ERR(state
);
1937 goto err_opendata_put
;
1938 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1939 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1941 status
= nfs4_opendata_access(cred
, opendata
, state
, fmode
);
1943 goto err_opendata_put
;
1945 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1946 nfs4_exclusive_attrset(opendata
, sattr
);
1948 nfs_fattr_init(opendata
->o_res
.f_attr
);
1949 status
= nfs4_do_setattr(state
->inode
, cred
,
1950 opendata
->o_res
.f_attr
, sattr
,
1953 nfs_setattr_update_inode(state
->inode
, sattr
);
1954 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1957 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
1958 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
1960 kfree(opendata
->f_attr
.mdsthreshold
);
1961 opendata
->f_attr
.mdsthreshold
= NULL
;
1963 nfs4_opendata_put(opendata
);
1964 nfs4_put_state_owner(sp
);
1968 kfree(opendata
->f_attr
.mdsthreshold
);
1969 nfs4_opendata_put(opendata
);
1970 err_put_state_owner
:
1971 nfs4_put_state_owner(sp
);
1978 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
1979 struct dentry
*dentry
,
1982 struct iattr
*sattr
,
1983 struct rpc_cred
*cred
,
1984 struct nfs4_threshold
**ctx_th
)
1986 struct nfs4_exception exception
= { };
1987 struct nfs4_state
*res
;
1990 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
1992 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
1996 /* NOTE: BAD_SEQID means the server and client disagree about the
1997 * book-keeping w.r.t. state-changing operations
1998 * (OPEN/CLOSE/LOCK/LOCKU...)
1999 * It is actually a sign of a bug on the client or on the server.
2001 * If we receive a BAD_SEQID error in the particular case of
2002 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2003 * have unhashed the old state_owner for us, and that we can
2004 * therefore safely retry using a new one. We should still warn
2005 * the user though...
2007 if (status
== -NFS4ERR_BAD_SEQID
) {
2008 pr_warn_ratelimited("NFS: v4 server %s "
2009 " returned a bad sequence-id error!\n",
2010 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2011 exception
.retry
= 1;
2015 * BAD_STATEID on OPEN means that the server cancelled our
2016 * state before it received the OPEN_CONFIRM.
2017 * Recover by retrying the request as per the discussion
2018 * on Page 181 of RFC3530.
2020 if (status
== -NFS4ERR_BAD_STATEID
) {
2021 exception
.retry
= 1;
2024 if (status
== -EAGAIN
) {
2025 /* We must have found a delegation */
2026 exception
.retry
= 1;
2029 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
2030 status
, &exception
));
2031 } while (exception
.retry
);
2035 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2036 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2037 struct nfs4_state
*state
)
2039 struct nfs_server
*server
= NFS_SERVER(inode
);
2040 struct nfs_setattrargs arg
= {
2041 .fh
= NFS_FH(inode
),
2044 .bitmask
= server
->attr_bitmask
,
2046 struct nfs_setattrres res
= {
2050 struct rpc_message msg
= {
2051 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2056 unsigned long timestamp
= jiffies
;
2059 nfs_fattr_init(fattr
);
2061 if (state
!= NULL
) {
2062 struct nfs_lockowner lockowner
= {
2063 .l_owner
= current
->files
,
2064 .l_pid
= current
->tgid
,
2066 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2068 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
2070 /* Use that stateid */
2072 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2074 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2075 if (status
== 0 && state
!= NULL
)
2076 renew_lease(server
, timestamp
);
2080 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2081 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2082 struct nfs4_state
*state
)
2084 struct nfs_server
*server
= NFS_SERVER(inode
);
2085 struct nfs4_exception exception
= {
2091 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2093 case -NFS4ERR_OPENMODE
:
2094 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2096 if (sattr
->ia_valid
& ATTR_OPEN
)
2101 err
= nfs4_handle_exception(server
, err
, &exception
);
2102 } while (exception
.retry
);
2107 struct nfs4_closedata
{
2108 struct inode
*inode
;
2109 struct nfs4_state
*state
;
2110 struct nfs_closeargs arg
;
2111 struct nfs_closeres res
;
2112 struct nfs_fattr fattr
;
2113 unsigned long timestamp
;
2118 static void nfs4_free_closedata(void *data
)
2120 struct nfs4_closedata
*calldata
= data
;
2121 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2122 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2125 pnfs_roc_release(calldata
->state
->inode
);
2126 nfs4_put_open_state(calldata
->state
);
2127 nfs_free_seqid(calldata
->arg
.seqid
);
2128 nfs4_put_state_owner(sp
);
2129 nfs_sb_deactive(sb
);
2133 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2136 spin_lock(&state
->owner
->so_lock
);
2137 if (!(fmode
& FMODE_READ
))
2138 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2139 if (!(fmode
& FMODE_WRITE
))
2140 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2141 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2142 spin_unlock(&state
->owner
->so_lock
);
2145 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2147 struct nfs4_closedata
*calldata
= data
;
2148 struct nfs4_state
*state
= calldata
->state
;
2149 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2151 dprintk("%s: begin!\n", __func__
);
2152 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2154 /* hmm. we are done with the inode, and in the process of freeing
2155 * the state_owner. we keep this around to process errors
2157 switch (task
->tk_status
) {
2160 pnfs_roc_set_barrier(state
->inode
,
2161 calldata
->roc_barrier
);
2162 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2163 renew_lease(server
, calldata
->timestamp
);
2164 nfs4_close_clear_stateid_flags(state
,
2165 calldata
->arg
.fmode
);
2167 case -NFS4ERR_STALE_STATEID
:
2168 case -NFS4ERR_OLD_STATEID
:
2169 case -NFS4ERR_BAD_STATEID
:
2170 case -NFS4ERR_EXPIRED
:
2171 if (calldata
->arg
.fmode
== 0)
2174 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2175 rpc_restart_call_prepare(task
);
2177 nfs_release_seqid(calldata
->arg
.seqid
);
2178 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2179 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2182 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2184 struct nfs4_closedata
*calldata
= data
;
2185 struct nfs4_state
*state
= calldata
->state
;
2186 struct inode
*inode
= calldata
->inode
;
2189 dprintk("%s: begin!\n", __func__
);
2190 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2193 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2194 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2195 spin_lock(&state
->owner
->so_lock
);
2196 /* Calculate the change in open mode */
2197 if (state
->n_rdwr
== 0) {
2198 if (state
->n_rdonly
== 0) {
2199 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2200 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2201 calldata
->arg
.fmode
&= ~FMODE_READ
;
2203 if (state
->n_wronly
== 0) {
2204 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2205 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2206 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2209 spin_unlock(&state
->owner
->so_lock
);
2212 /* Note: exit _without_ calling nfs4_close_done */
2213 task
->tk_action
= NULL
;
2217 if (calldata
->arg
.fmode
== 0) {
2218 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2219 if (calldata
->roc
&&
2220 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
))
2224 nfs_fattr_init(calldata
->res
.fattr
);
2225 calldata
->timestamp
= jiffies
;
2226 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2227 &calldata
->arg
.seq_args
,
2228 &calldata
->res
.seq_res
,
2231 rpc_call_start(task
);
2233 dprintk("%s: done!\n", __func__
);
2236 static const struct rpc_call_ops nfs4_close_ops
= {
2237 .rpc_call_prepare
= nfs4_close_prepare
,
2238 .rpc_call_done
= nfs4_close_done
,
2239 .rpc_release
= nfs4_free_closedata
,
2243 * It is possible for data to be read/written from a mem-mapped file
2244 * after the sys_close call (which hits the vfs layer as a flush).
2245 * This means that we can't safely call nfsv4 close on a file until
2246 * the inode is cleared. This in turn means that we are not good
2247 * NFSv4 citizens - we do not indicate to the server to update the file's
2248 * share state even when we are done with one of the three share
2249 * stateid's in the inode.
2251 * NOTE: Caller must be holding the sp->so_owner semaphore!
2253 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2255 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2256 struct nfs4_closedata
*calldata
;
2257 struct nfs4_state_owner
*sp
= state
->owner
;
2258 struct rpc_task
*task
;
2259 struct rpc_message msg
= {
2260 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2261 .rpc_cred
= state
->owner
->so_cred
,
2263 struct rpc_task_setup task_setup_data
= {
2264 .rpc_client
= server
->client
,
2265 .rpc_message
= &msg
,
2266 .callback_ops
= &nfs4_close_ops
,
2267 .workqueue
= nfsiod_workqueue
,
2268 .flags
= RPC_TASK_ASYNC
,
2270 int status
= -ENOMEM
;
2272 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2273 if (calldata
== NULL
)
2275 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2276 calldata
->inode
= state
->inode
;
2277 calldata
->state
= state
;
2278 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2279 calldata
->arg
.stateid
= &state
->open_stateid
;
2280 /* Serialization for the sequence id */
2281 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2282 if (calldata
->arg
.seqid
== NULL
)
2283 goto out_free_calldata
;
2284 calldata
->arg
.fmode
= 0;
2285 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2286 calldata
->res
.fattr
= &calldata
->fattr
;
2287 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2288 calldata
->res
.server
= server
;
2289 calldata
->roc
= pnfs_roc(state
->inode
);
2290 nfs_sb_active(calldata
->inode
->i_sb
);
2292 msg
.rpc_argp
= &calldata
->arg
;
2293 msg
.rpc_resp
= &calldata
->res
;
2294 task_setup_data
.callback_data
= calldata
;
2295 task
= rpc_run_task(&task_setup_data
);
2297 return PTR_ERR(task
);
2300 status
= rpc_wait_for_completion_task(task
);
2306 nfs4_put_open_state(state
);
2307 nfs4_put_state_owner(sp
);
2311 static struct inode
*
2312 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2314 struct nfs4_state
*state
;
2316 /* Protect against concurrent sillydeletes */
2317 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2318 ctx
->cred
, &ctx
->mdsthreshold
);
2320 return ERR_CAST(state
);
2322 return igrab(state
->inode
);
2325 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2327 if (ctx
->state
== NULL
)
2330 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2332 nfs4_close_state(ctx
->state
, ctx
->mode
);
2335 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2337 struct nfs4_server_caps_arg args
= {
2340 struct nfs4_server_caps_res res
= {};
2341 struct rpc_message msg
= {
2342 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2348 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2350 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2351 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2352 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2353 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2354 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2355 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2356 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2357 server
->caps
|= NFS_CAP_ACLS
;
2358 if (res
.has_links
!= 0)
2359 server
->caps
|= NFS_CAP_HARDLINKS
;
2360 if (res
.has_symlinks
!= 0)
2361 server
->caps
|= NFS_CAP_SYMLINKS
;
2362 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2363 server
->caps
|= NFS_CAP_FILEID
;
2364 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2365 server
->caps
|= NFS_CAP_MODE
;
2366 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2367 server
->caps
|= NFS_CAP_NLINK
;
2368 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2369 server
->caps
|= NFS_CAP_OWNER
;
2370 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2371 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2372 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2373 server
->caps
|= NFS_CAP_ATIME
;
2374 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2375 server
->caps
|= NFS_CAP_CTIME
;
2376 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2377 server
->caps
|= NFS_CAP_MTIME
;
2379 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2380 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2381 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2382 server
->acl_bitmask
= res
.acl_bitmask
;
2383 server
->fh_expire_type
= res
.fh_expire_type
;
2389 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2391 struct nfs4_exception exception
= { };
2394 err
= nfs4_handle_exception(server
,
2395 _nfs4_server_capabilities(server
, fhandle
),
2397 } while (exception
.retry
);
2401 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2402 struct nfs_fsinfo
*info
)
2404 struct nfs4_lookup_root_arg args
= {
2405 .bitmask
= nfs4_fattr_bitmap
,
2407 struct nfs4_lookup_res res
= {
2409 .fattr
= info
->fattr
,
2412 struct rpc_message msg
= {
2413 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2418 nfs_fattr_init(info
->fattr
);
2419 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2422 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2423 struct nfs_fsinfo
*info
)
2425 struct nfs4_exception exception
= { };
2428 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2431 case -NFS4ERR_WRONGSEC
:
2434 err
= nfs4_handle_exception(server
, err
, &exception
);
2436 } while (exception
.retry
);
2441 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2442 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2444 struct rpc_auth
*auth
;
2447 auth
= rpcauth_create(flavor
, server
->client
);
2452 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2457 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2458 struct nfs_fsinfo
*info
)
2460 int i
, len
, status
= 0;
2461 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2463 len
= rpcauth_list_flavors(flav_array
, ARRAY_SIZE(flav_array
));
2466 for (i
= 0; i
< len
; i
++) {
2467 /* AUTH_UNIX is the default flavor if none was specified,
2468 * thus has already been tried. */
2469 if (flav_array
[i
] == RPC_AUTH_UNIX
)
2472 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2473 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2478 * -EACCESS could mean that the user doesn't have correct permissions
2479 * to access the mount. It could also mean that we tried to mount
2480 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2481 * existing mount programs don't handle -EACCES very well so it should
2482 * be mapped to -EPERM instead.
2484 if (status
== -EACCES
)
2490 * get the file handle for the "/" directory on the server
2492 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2493 struct nfs_fsinfo
*info
)
2495 int minor_version
= server
->nfs_client
->cl_minorversion
;
2496 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2497 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2499 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2500 * by nfs4_map_errors() as this function exits.
2502 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2504 status
= nfs4_server_capabilities(server
, fhandle
);
2506 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2507 return nfs4_map_errors(status
);
2510 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2511 struct nfs_fsinfo
*info
)
2514 struct nfs_fattr
*fattr
= info
->fattr
;
2516 error
= nfs4_server_capabilities(server
, mntfh
);
2518 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2522 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2524 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2528 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2529 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2530 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2536 * Get locations and (maybe) other attributes of a referral.
2537 * Note that we'll actually follow the referral later when
2538 * we detect fsid mismatch in inode revalidation
2540 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2541 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2542 struct nfs_fh
*fhandle
)
2544 int status
= -ENOMEM
;
2545 struct page
*page
= NULL
;
2546 struct nfs4_fs_locations
*locations
= NULL
;
2548 page
= alloc_page(GFP_KERNEL
);
2551 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2552 if (locations
== NULL
)
2555 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2558 /* Make sure server returned a different fsid for the referral */
2559 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2560 dprintk("%s: server did not return a different fsid for"
2561 " a referral at %s\n", __func__
, name
->name
);
2565 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2566 nfs_fixup_referral_attributes(&locations
->fattr
);
2568 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2569 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2570 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2578 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2580 struct nfs4_getattr_arg args
= {
2582 .bitmask
= server
->attr_bitmask
,
2584 struct nfs4_getattr_res res
= {
2588 struct rpc_message msg
= {
2589 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2594 nfs_fattr_init(fattr
);
2595 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2598 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2600 struct nfs4_exception exception
= { };
2603 err
= nfs4_handle_exception(server
,
2604 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2606 } while (exception
.retry
);
2611 * The file is not closed if it is opened due to the a request to change
2612 * the size of the file. The open call will not be needed once the
2613 * VFS layer lookup-intents are implemented.
2615 * Close is called when the inode is destroyed.
2616 * If we haven't opened the file for O_WRONLY, we
2617 * need to in the size_change case to obtain a stateid.
2620 * Because OPEN is always done by name in nfsv4, it is
2621 * possible that we opened a different file by the same
2622 * name. We can recognize this race condition, but we
2623 * can't do anything about it besides returning an error.
2625 * This will be fixed with VFS changes (lookup-intent).
2628 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2629 struct iattr
*sattr
)
2631 struct inode
*inode
= dentry
->d_inode
;
2632 struct rpc_cred
*cred
= NULL
;
2633 struct nfs4_state
*state
= NULL
;
2636 if (pnfs_ld_layoutret_on_setattr(inode
))
2637 pnfs_return_layout(inode
);
2639 nfs_fattr_init(fattr
);
2641 /* Deal with open(O_TRUNC) */
2642 if (sattr
->ia_valid
& ATTR_OPEN
)
2643 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2645 /* Optimization: if the end result is no change, don't RPC */
2646 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2649 /* Search for an existing open(O_WRITE) file */
2650 if (sattr
->ia_valid
& ATTR_FILE
) {
2651 struct nfs_open_context
*ctx
;
2653 ctx
= nfs_file_open_context(sattr
->ia_file
);
2660 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2662 nfs_setattr_update_inode(inode
, sattr
);
2666 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2667 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2668 struct nfs_fattr
*fattr
)
2670 struct nfs_server
*server
= NFS_SERVER(dir
);
2672 struct nfs4_lookup_arg args
= {
2673 .bitmask
= server
->attr_bitmask
,
2674 .dir_fh
= NFS_FH(dir
),
2677 struct nfs4_lookup_res res
= {
2682 struct rpc_message msg
= {
2683 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2688 nfs_fattr_init(fattr
);
2690 dprintk("NFS call lookup %s\n", name
->name
);
2691 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2692 dprintk("NFS reply lookup: %d\n", status
);
2696 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2698 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2699 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2700 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2704 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2705 struct qstr
*name
, struct nfs_fh
*fhandle
,
2706 struct nfs_fattr
*fattr
)
2708 struct nfs4_exception exception
= { };
2709 struct rpc_clnt
*client
= *clnt
;
2712 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2714 case -NFS4ERR_BADNAME
:
2717 case -NFS4ERR_MOVED
:
2718 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2720 case -NFS4ERR_WRONGSEC
:
2722 if (client
!= *clnt
)
2725 client
= nfs4_create_sec_client(client
, dir
, name
);
2727 return PTR_ERR(client
);
2729 exception
.retry
= 1;
2732 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2734 } while (exception
.retry
);
2739 else if (client
!= *clnt
)
2740 rpc_shutdown_client(client
);
2745 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2746 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2749 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2751 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2752 if (client
!= NFS_CLIENT(dir
)) {
2753 rpc_shutdown_client(client
);
2754 nfs_fixup_secinfo_attributes(fattr
);
2760 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2761 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2764 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2766 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2768 rpc_shutdown_client(client
);
2769 return ERR_PTR(status
);
2774 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2776 struct nfs_server
*server
= NFS_SERVER(inode
);
2777 struct nfs4_accessargs args
= {
2778 .fh
= NFS_FH(inode
),
2779 .bitmask
= server
->cache_consistency_bitmask
,
2781 struct nfs4_accessres res
= {
2784 struct rpc_message msg
= {
2785 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2788 .rpc_cred
= entry
->cred
,
2790 int mode
= entry
->mask
;
2794 * Determine which access bits we want to ask for...
2796 if (mode
& MAY_READ
)
2797 args
.access
|= NFS4_ACCESS_READ
;
2798 if (S_ISDIR(inode
->i_mode
)) {
2799 if (mode
& MAY_WRITE
)
2800 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2801 if (mode
& MAY_EXEC
)
2802 args
.access
|= NFS4_ACCESS_LOOKUP
;
2804 if (mode
& MAY_WRITE
)
2805 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2806 if (mode
& MAY_EXEC
)
2807 args
.access
|= NFS4_ACCESS_EXECUTE
;
2810 res
.fattr
= nfs_alloc_fattr();
2811 if (res
.fattr
== NULL
)
2814 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2816 nfs_access_set_mask(entry
, res
.access
);
2817 nfs_refresh_inode(inode
, res
.fattr
);
2819 nfs_free_fattr(res
.fattr
);
2823 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2825 struct nfs4_exception exception
= { };
2828 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2829 _nfs4_proc_access(inode
, entry
),
2831 } while (exception
.retry
);
2836 * TODO: For the time being, we don't try to get any attributes
2837 * along with any of the zero-copy operations READ, READDIR,
2840 * In the case of the first three, we want to put the GETATTR
2841 * after the read-type operation -- this is because it is hard
2842 * to predict the length of a GETATTR response in v4, and thus
2843 * align the READ data correctly. This means that the GETATTR
2844 * may end up partially falling into the page cache, and we should
2845 * shift it into the 'tail' of the xdr_buf before processing.
2846 * To do this efficiently, we need to know the total length
2847 * of data received, which doesn't seem to be available outside
2850 * In the case of WRITE, we also want to put the GETATTR after
2851 * the operation -- in this case because we want to make sure
2852 * we get the post-operation mtime and size.
2854 * Both of these changes to the XDR layer would in fact be quite
2855 * minor, but I decided to leave them for a subsequent patch.
2857 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2858 unsigned int pgbase
, unsigned int pglen
)
2860 struct nfs4_readlink args
= {
2861 .fh
= NFS_FH(inode
),
2866 struct nfs4_readlink_res res
;
2867 struct rpc_message msg
= {
2868 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2873 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2876 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2877 unsigned int pgbase
, unsigned int pglen
)
2879 struct nfs4_exception exception
= { };
2882 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2883 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2885 } while (exception
.retry
);
2890 * This is just for mknod. open(O_CREAT) will always do ->open_context().
2893 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2896 struct nfs_open_context
*ctx
;
2897 struct nfs4_state
*state
;
2900 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
2902 return PTR_ERR(ctx
);
2904 sattr
->ia_mode
&= ~current_umask();
2905 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
2906 flags
, sattr
, ctx
->cred
,
2907 &ctx
->mdsthreshold
);
2909 if (IS_ERR(state
)) {
2910 status
= PTR_ERR(state
);
2913 d_add(dentry
, igrab(state
->inode
));
2914 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2917 put_nfs_open_context(ctx
);
2921 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2923 struct nfs_server
*server
= NFS_SERVER(dir
);
2924 struct nfs_removeargs args
= {
2928 struct nfs_removeres res
= {
2931 struct rpc_message msg
= {
2932 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2938 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2940 update_changeattr(dir
, &res
.cinfo
);
2944 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2946 struct nfs4_exception exception
= { };
2949 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2950 _nfs4_proc_remove(dir
, name
),
2952 } while (exception
.retry
);
2956 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2958 struct nfs_server
*server
= NFS_SERVER(dir
);
2959 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2960 struct nfs_removeres
*res
= msg
->rpc_resp
;
2962 res
->server
= server
;
2963 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2964 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
2967 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
2969 if (nfs4_setup_sequence(NFS_SERVER(data
->dir
),
2970 &data
->args
.seq_args
,
2974 rpc_call_start(task
);
2977 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2979 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2981 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2983 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2985 update_changeattr(dir
, &res
->cinfo
);
2989 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2991 struct nfs_server
*server
= NFS_SERVER(dir
);
2992 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2993 struct nfs_renameres
*res
= msg
->rpc_resp
;
2995 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2996 res
->server
= server
;
2997 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3000 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3002 if (nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3003 &data
->args
.seq_args
,
3007 rpc_call_start(task
);
3010 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3011 struct inode
*new_dir
)
3013 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3015 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3017 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3020 update_changeattr(old_dir
, &res
->old_cinfo
);
3021 update_changeattr(new_dir
, &res
->new_cinfo
);
3025 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3026 struct inode
*new_dir
, struct qstr
*new_name
)
3028 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3029 struct nfs_renameargs arg
= {
3030 .old_dir
= NFS_FH(old_dir
),
3031 .new_dir
= NFS_FH(new_dir
),
3032 .old_name
= old_name
,
3033 .new_name
= new_name
,
3035 struct nfs_renameres res
= {
3038 struct rpc_message msg
= {
3039 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3043 int status
= -ENOMEM
;
3045 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3047 update_changeattr(old_dir
, &res
.old_cinfo
);
3048 update_changeattr(new_dir
, &res
.new_cinfo
);
3053 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3054 struct inode
*new_dir
, struct qstr
*new_name
)
3056 struct nfs4_exception exception
= { };
3059 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3060 _nfs4_proc_rename(old_dir
, old_name
,
3063 } while (exception
.retry
);
3067 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3069 struct nfs_server
*server
= NFS_SERVER(inode
);
3070 struct nfs4_link_arg arg
= {
3071 .fh
= NFS_FH(inode
),
3072 .dir_fh
= NFS_FH(dir
),
3074 .bitmask
= server
->attr_bitmask
,
3076 struct nfs4_link_res res
= {
3079 struct rpc_message msg
= {
3080 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3084 int status
= -ENOMEM
;
3086 res
.fattr
= nfs_alloc_fattr();
3087 if (res
.fattr
== NULL
)
3090 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3092 update_changeattr(dir
, &res
.cinfo
);
3093 nfs_post_op_update_inode(inode
, res
.fattr
);
3096 nfs_free_fattr(res
.fattr
);
3100 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3102 struct nfs4_exception exception
= { };
3105 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3106 _nfs4_proc_link(inode
, dir
, name
),
3108 } while (exception
.retry
);
3112 struct nfs4_createdata
{
3113 struct rpc_message msg
;
3114 struct nfs4_create_arg arg
;
3115 struct nfs4_create_res res
;
3117 struct nfs_fattr fattr
;
3120 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3121 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3123 struct nfs4_createdata
*data
;
3125 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3127 struct nfs_server
*server
= NFS_SERVER(dir
);
3129 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3130 data
->msg
.rpc_argp
= &data
->arg
;
3131 data
->msg
.rpc_resp
= &data
->res
;
3132 data
->arg
.dir_fh
= NFS_FH(dir
);
3133 data
->arg
.server
= server
;
3134 data
->arg
.name
= name
;
3135 data
->arg
.attrs
= sattr
;
3136 data
->arg
.ftype
= ftype
;
3137 data
->arg
.bitmask
= server
->attr_bitmask
;
3138 data
->res
.server
= server
;
3139 data
->res
.fh
= &data
->fh
;
3140 data
->res
.fattr
= &data
->fattr
;
3141 nfs_fattr_init(data
->res
.fattr
);
3146 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3148 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3149 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3151 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3152 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3157 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3162 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3163 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3165 struct nfs4_createdata
*data
;
3166 int status
= -ENAMETOOLONG
;
3168 if (len
> NFS4_MAXPATHLEN
)
3172 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3176 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3177 data
->arg
.u
.symlink
.pages
= &page
;
3178 data
->arg
.u
.symlink
.len
= len
;
3180 status
= nfs4_do_create(dir
, dentry
, data
);
3182 nfs4_free_createdata(data
);
3187 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3188 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3190 struct nfs4_exception exception
= { };
3193 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3194 _nfs4_proc_symlink(dir
, dentry
, page
,
3197 } while (exception
.retry
);
3201 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3202 struct iattr
*sattr
)
3204 struct nfs4_createdata
*data
;
3205 int status
= -ENOMEM
;
3207 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3211 status
= nfs4_do_create(dir
, dentry
, data
);
3213 nfs4_free_createdata(data
);
3218 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3219 struct iattr
*sattr
)
3221 struct nfs4_exception exception
= { };
3224 sattr
->ia_mode
&= ~current_umask();
3226 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3227 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3229 } while (exception
.retry
);
3233 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3234 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3236 struct inode
*dir
= dentry
->d_inode
;
3237 struct nfs4_readdir_arg args
= {
3242 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3245 struct nfs4_readdir_res res
;
3246 struct rpc_message msg
= {
3247 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3254 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3255 dentry
->d_parent
->d_name
.name
,
3256 dentry
->d_name
.name
,
3257 (unsigned long long)cookie
);
3258 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3259 res
.pgbase
= args
.pgbase
;
3260 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3262 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3263 status
+= args
.pgbase
;
3266 nfs_invalidate_atime(dir
);
3268 dprintk("%s: returns %d\n", __func__
, status
);
3272 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3273 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3275 struct nfs4_exception exception
= { };
3278 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3279 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3280 pages
, count
, plus
),
3282 } while (exception
.retry
);
3286 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3287 struct iattr
*sattr
, dev_t rdev
)
3289 struct nfs4_createdata
*data
;
3290 int mode
= sattr
->ia_mode
;
3291 int status
= -ENOMEM
;
3293 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
3294 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
3296 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3301 data
->arg
.ftype
= NF4FIFO
;
3302 else if (S_ISBLK(mode
)) {
3303 data
->arg
.ftype
= NF4BLK
;
3304 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3305 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3307 else if (S_ISCHR(mode
)) {
3308 data
->arg
.ftype
= NF4CHR
;
3309 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3310 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3313 status
= nfs4_do_create(dir
, dentry
, data
);
3315 nfs4_free_createdata(data
);
3320 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3321 struct iattr
*sattr
, dev_t rdev
)
3323 struct nfs4_exception exception
= { };
3326 sattr
->ia_mode
&= ~current_umask();
3328 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3329 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3331 } while (exception
.retry
);
3335 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3336 struct nfs_fsstat
*fsstat
)
3338 struct nfs4_statfs_arg args
= {
3340 .bitmask
= server
->attr_bitmask
,
3342 struct nfs4_statfs_res res
= {
3345 struct rpc_message msg
= {
3346 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3351 nfs_fattr_init(fsstat
->fattr
);
3352 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3355 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3357 struct nfs4_exception exception
= { };
3360 err
= nfs4_handle_exception(server
,
3361 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3363 } while (exception
.retry
);
3367 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3368 struct nfs_fsinfo
*fsinfo
)
3370 struct nfs4_fsinfo_arg args
= {
3372 .bitmask
= server
->attr_bitmask
,
3374 struct nfs4_fsinfo_res res
= {
3377 struct rpc_message msg
= {
3378 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3383 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3386 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3388 struct nfs4_exception exception
= { };
3392 err
= nfs4_handle_exception(server
,
3393 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3395 } while (exception
.retry
);
3399 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3403 nfs_fattr_init(fsinfo
->fattr
);
3404 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3406 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3411 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3412 struct nfs_pathconf
*pathconf
)
3414 struct nfs4_pathconf_arg args
= {
3416 .bitmask
= server
->attr_bitmask
,
3418 struct nfs4_pathconf_res res
= {
3419 .pathconf
= pathconf
,
3421 struct rpc_message msg
= {
3422 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3427 /* None of the pathconf attributes are mandatory to implement */
3428 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3429 memset(pathconf
, 0, sizeof(*pathconf
));
3433 nfs_fattr_init(pathconf
->fattr
);
3434 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3437 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3438 struct nfs_pathconf
*pathconf
)
3440 struct nfs4_exception exception
= { };
3444 err
= nfs4_handle_exception(server
,
3445 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3447 } while (exception
.retry
);
3451 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3453 nfs_invalidate_atime(data
->header
->inode
);
3456 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3458 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3460 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3461 rpc_restart_call_prepare(task
);
3465 __nfs4_read_done_cb(data
);
3466 if (task
->tk_status
> 0)
3467 renew_lease(server
, data
->timestamp
);
3471 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3474 dprintk("--> %s\n", __func__
);
3476 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3479 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3480 nfs4_read_done_cb(task
, data
);
3483 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3485 data
->timestamp
= jiffies
;
3486 data
->read_done_cb
= nfs4_read_done_cb
;
3487 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3488 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3491 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3493 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3494 &data
->args
.seq_args
,
3498 rpc_call_start(task
);
3501 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3503 struct inode
*inode
= data
->header
->inode
;
3505 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3506 rpc_restart_call_prepare(task
);
3509 if (task
->tk_status
>= 0) {
3510 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3511 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3516 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3518 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3520 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3521 nfs4_write_done_cb(task
, data
);
3525 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3527 const struct nfs_pgio_header
*hdr
= data
->header
;
3529 /* Don't request attributes for pNFS or O_DIRECT writes */
3530 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3532 /* Otherwise, request attributes if and only if we don't hold
3535 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3538 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3540 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3542 if (!nfs4_write_need_cache_consistency_data(data
)) {
3543 data
->args
.bitmask
= NULL
;
3544 data
->res
.fattr
= NULL
;
3546 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3548 if (!data
->write_done_cb
)
3549 data
->write_done_cb
= nfs4_write_done_cb
;
3550 data
->res
.server
= server
;
3551 data
->timestamp
= jiffies
;
3553 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3554 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3557 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3559 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3560 &data
->args
.seq_args
,
3564 rpc_call_start(task
);
3567 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3569 if (nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3570 &data
->args
.seq_args
,
3574 rpc_call_start(task
);
3577 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3579 struct inode
*inode
= data
->inode
;
3581 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3582 rpc_restart_call_prepare(task
);
3588 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3590 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3592 return data
->commit_done_cb(task
, data
);
3595 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3597 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3599 if (data
->commit_done_cb
== NULL
)
3600 data
->commit_done_cb
= nfs4_commit_done_cb
;
3601 data
->res
.server
= server
;
3602 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3603 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3606 struct nfs4_renewdata
{
3607 struct nfs_client
*client
;
3608 unsigned long timestamp
;
3612 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3613 * standalone procedure for queueing an asynchronous RENEW.
3615 static void nfs4_renew_release(void *calldata
)
3617 struct nfs4_renewdata
*data
= calldata
;
3618 struct nfs_client
*clp
= data
->client
;
3620 if (atomic_read(&clp
->cl_count
) > 1)
3621 nfs4_schedule_state_renewal(clp
);
3622 nfs_put_client(clp
);
3626 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3628 struct nfs4_renewdata
*data
= calldata
;
3629 struct nfs_client
*clp
= data
->client
;
3630 unsigned long timestamp
= data
->timestamp
;
3632 if (task
->tk_status
< 0) {
3633 /* Unless we're shutting down, schedule state recovery! */
3634 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3636 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3637 nfs4_schedule_lease_recovery(clp
);
3640 nfs4_schedule_path_down_recovery(clp
);
3642 do_renew_lease(clp
, timestamp
);
3645 static const struct rpc_call_ops nfs4_renew_ops
= {
3646 .rpc_call_done
= nfs4_renew_done
,
3647 .rpc_release
= nfs4_renew_release
,
3650 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3652 struct rpc_message msg
= {
3653 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3657 struct nfs4_renewdata
*data
;
3659 if (renew_flags
== 0)
3661 if (!atomic_inc_not_zero(&clp
->cl_count
))
3663 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3667 data
->timestamp
= jiffies
;
3668 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3669 &nfs4_renew_ops
, data
);
3672 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3674 struct rpc_message msg
= {
3675 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3679 unsigned long now
= jiffies
;
3682 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3685 do_renew_lease(clp
, now
);
3689 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3691 return (server
->caps
& NFS_CAP_ACLS
)
3692 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3693 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3696 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3697 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3700 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3702 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3703 struct page
**pages
, unsigned int *pgbase
)
3705 struct page
*newpage
, **spages
;
3711 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3712 newpage
= alloc_page(GFP_KERNEL
);
3714 if (newpage
== NULL
)
3716 memcpy(page_address(newpage
), buf
, len
);
3721 } while (buflen
!= 0);
3727 __free_page(spages
[rc
-1]);
3731 struct nfs4_cached_acl
{
3737 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3739 struct nfs_inode
*nfsi
= NFS_I(inode
);
3741 spin_lock(&inode
->i_lock
);
3742 kfree(nfsi
->nfs4_acl
);
3743 nfsi
->nfs4_acl
= acl
;
3744 spin_unlock(&inode
->i_lock
);
3747 static void nfs4_zap_acl_attr(struct inode
*inode
)
3749 nfs4_set_cached_acl(inode
, NULL
);
3752 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3754 struct nfs_inode
*nfsi
= NFS_I(inode
);
3755 struct nfs4_cached_acl
*acl
;
3758 spin_lock(&inode
->i_lock
);
3759 acl
= nfsi
->nfs4_acl
;
3762 if (buf
== NULL
) /* user is just asking for length */
3764 if (acl
->cached
== 0)
3766 ret
= -ERANGE
; /* see getxattr(2) man page */
3767 if (acl
->len
> buflen
)
3769 memcpy(buf
, acl
->data
, acl
->len
);
3773 spin_unlock(&inode
->i_lock
);
3777 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3779 struct nfs4_cached_acl
*acl
;
3780 size_t buflen
= sizeof(*acl
) + acl_len
;
3782 if (buflen
<= PAGE_SIZE
) {
3783 acl
= kmalloc(buflen
, GFP_KERNEL
);
3787 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3789 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3796 nfs4_set_cached_acl(inode
, acl
);
3800 * The getxattr API returns the required buffer length when called with a
3801 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3802 * the required buf. On a NULL buf, we send a page of data to the server
3803 * guessing that the ACL request can be serviced by a page. If so, we cache
3804 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3805 * the cache. If not so, we throw away the page, and cache the required
3806 * length. The next getxattr call will then produce another round trip to
3807 * the server, this time with the input buf of the required size.
3809 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3811 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3812 struct nfs_getaclargs args
= {
3813 .fh
= NFS_FH(inode
),
3817 struct nfs_getaclres res
= {
3820 struct rpc_message msg
= {
3821 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3825 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3826 int ret
= -ENOMEM
, i
;
3828 /* As long as we're doing a round trip to the server anyway,
3829 * let's be prepared for a page of acl data. */
3832 if (npages
> ARRAY_SIZE(pages
))
3835 for (i
= 0; i
< npages
; i
++) {
3836 pages
[i
] = alloc_page(GFP_KERNEL
);
3841 /* for decoding across pages */
3842 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3843 if (!res
.acl_scratch
)
3846 args
.acl_len
= npages
* PAGE_SIZE
;
3847 args
.acl_pgbase
= 0;
3849 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3850 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3851 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3852 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3856 /* Handle the case where the passed-in buffer is too short */
3857 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
3858 /* Did the user only issue a request for the acl length? */
3864 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
3866 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
3870 for (i
= 0; i
< npages
; i
++)
3872 __free_page(pages
[i
]);
3873 if (res
.acl_scratch
)
3874 __free_page(res
.acl_scratch
);
3878 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3880 struct nfs4_exception exception
= { };
3883 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3886 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3887 } while (exception
.retry
);
3891 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3893 struct nfs_server
*server
= NFS_SERVER(inode
);
3896 if (!nfs4_server_supports_acls(server
))
3898 ret
= nfs_revalidate_inode(server
, inode
);
3901 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3902 nfs_zap_acl_cache(inode
);
3903 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3905 /* -ENOENT is returned if there is no ACL or if there is an ACL
3906 * but no cached acl data, just the acl length */
3908 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3911 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3913 struct nfs_server
*server
= NFS_SERVER(inode
);
3914 struct page
*pages
[NFS4ACL_MAXPAGES
];
3915 struct nfs_setaclargs arg
= {
3916 .fh
= NFS_FH(inode
),
3920 struct nfs_setaclres res
;
3921 struct rpc_message msg
= {
3922 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3926 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3929 if (!nfs4_server_supports_acls(server
))
3931 if (npages
> ARRAY_SIZE(pages
))
3933 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3936 nfs4_inode_return_delegation(inode
);
3937 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3940 * Free each page after tx, so the only ref left is
3941 * held by the network stack
3944 put_page(pages
[i
-1]);
3947 * Acl update can result in inode attribute update.
3948 * so mark the attribute cache invalid.
3950 spin_lock(&inode
->i_lock
);
3951 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3952 spin_unlock(&inode
->i_lock
);
3953 nfs_access_zap_cache(inode
);
3954 nfs_zap_acl_cache(inode
);
3958 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3960 struct nfs4_exception exception
= { };
3963 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3964 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3966 } while (exception
.retry
);
3971 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3973 struct nfs_client
*clp
= server
->nfs_client
;
3975 if (task
->tk_status
>= 0)
3977 switch(task
->tk_status
) {
3978 case -NFS4ERR_DELEG_REVOKED
:
3979 case -NFS4ERR_ADMIN_REVOKED
:
3980 case -NFS4ERR_BAD_STATEID
:
3983 nfs_remove_bad_delegation(state
->inode
);
3984 case -NFS4ERR_OPENMODE
:
3987 nfs4_schedule_stateid_recovery(server
, state
);
3988 goto wait_on_recovery
;
3989 case -NFS4ERR_EXPIRED
:
3991 nfs4_schedule_stateid_recovery(server
, state
);
3992 case -NFS4ERR_STALE_STATEID
:
3993 case -NFS4ERR_STALE_CLIENTID
:
3994 nfs4_schedule_lease_recovery(clp
);
3995 goto wait_on_recovery
;
3996 #if defined(CONFIG_NFS_V4_1)
3997 case -NFS4ERR_BADSESSION
:
3998 case -NFS4ERR_BADSLOT
:
3999 case -NFS4ERR_BAD_HIGH_SLOT
:
4000 case -NFS4ERR_DEADSESSION
:
4001 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4002 case -NFS4ERR_SEQ_FALSE_RETRY
:
4003 case -NFS4ERR_SEQ_MISORDERED
:
4004 dprintk("%s ERROR %d, Reset session\n", __func__
,
4006 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4007 task
->tk_status
= 0;
4009 #endif /* CONFIG_NFS_V4_1 */
4010 case -NFS4ERR_DELAY
:
4011 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4012 case -NFS4ERR_GRACE
:
4014 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4015 task
->tk_status
= 0;
4017 case -NFS4ERR_RETRY_UNCACHED_REP
:
4018 case -NFS4ERR_OLD_STATEID
:
4019 task
->tk_status
= 0;
4022 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4025 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4026 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4027 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4028 task
->tk_status
= 0;
4032 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4033 nfs4_verifier
*bootverf
)
4037 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4038 /* An impossible timestamp guarantees this value
4039 * will never match a generated boot time. */
4041 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4043 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4044 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4045 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4047 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4051 * nfs4_proc_setclientid - Negotiate client ID
4052 * @clp: state data structure
4053 * @program: RPC program for NFSv4 callback service
4054 * @port: IP port number for NFS4 callback service
4055 * @cred: RPC credential to use for this call
4056 * @res: where to place the result
4058 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4060 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4061 unsigned short port
, struct rpc_cred
*cred
,
4062 struct nfs4_setclientid_res
*res
)
4064 nfs4_verifier sc_verifier
;
4065 struct nfs4_setclientid setclientid
= {
4066 .sc_verifier
= &sc_verifier
,
4068 .sc_cb_ident
= clp
->cl_cb_ident
,
4070 struct rpc_message msg
= {
4071 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4072 .rpc_argp
= &setclientid
,
4078 /* nfs_client_id4 */
4079 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4081 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
4082 sizeof(setclientid
.sc_name
), "%s/%s %s",
4084 rpc_peeraddr2str(clp
->cl_rpcclient
,
4086 rpc_peeraddr2str(clp
->cl_rpcclient
,
4087 RPC_DISPLAY_PROTO
));
4089 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4090 sizeof(setclientid
.sc_netid
),
4091 rpc_peeraddr2str(clp
->cl_rpcclient
,
4092 RPC_DISPLAY_NETID
));
4094 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4095 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4096 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4098 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4099 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4100 setclientid
.sc_name_len
, setclientid
.sc_name
);
4101 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4102 dprintk("NFS reply setclientid: %d\n", status
);
4107 * nfs4_proc_setclientid_confirm - Confirm client ID
4108 * @clp: state data structure
4109 * @res: result of a previous SETCLIENTID
4110 * @cred: RPC credential to use for this call
4112 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4114 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4115 struct nfs4_setclientid_res
*arg
,
4116 struct rpc_cred
*cred
)
4118 struct nfs_fsinfo fsinfo
;
4119 struct rpc_message msg
= {
4120 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4122 .rpc_resp
= &fsinfo
,
4128 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4129 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4132 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4134 spin_lock(&clp
->cl_lock
);
4135 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4136 clp
->cl_last_renewal
= now
;
4137 spin_unlock(&clp
->cl_lock
);
4139 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4143 struct nfs4_delegreturndata
{
4144 struct nfs4_delegreturnargs args
;
4145 struct nfs4_delegreturnres res
;
4147 nfs4_stateid stateid
;
4148 unsigned long timestamp
;
4149 struct nfs_fattr fattr
;
4153 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4155 struct nfs4_delegreturndata
*data
= calldata
;
4157 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4160 switch (task
->tk_status
) {
4161 case -NFS4ERR_STALE_STATEID
:
4162 case -NFS4ERR_EXPIRED
:
4164 renew_lease(data
->res
.server
, data
->timestamp
);
4167 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4169 rpc_restart_call_prepare(task
);
4173 data
->rpc_status
= task
->tk_status
;
4176 static void nfs4_delegreturn_release(void *calldata
)
4181 #if defined(CONFIG_NFS_V4_1)
4182 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4184 struct nfs4_delegreturndata
*d_data
;
4186 d_data
= (struct nfs4_delegreturndata
*)data
;
4188 if (nfs4_setup_sequence(d_data
->res
.server
,
4189 &d_data
->args
.seq_args
,
4190 &d_data
->res
.seq_res
, task
))
4192 rpc_call_start(task
);
4194 #endif /* CONFIG_NFS_V4_1 */
4196 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4197 #if defined(CONFIG_NFS_V4_1)
4198 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4199 #endif /* CONFIG_NFS_V4_1 */
4200 .rpc_call_done
= nfs4_delegreturn_done
,
4201 .rpc_release
= nfs4_delegreturn_release
,
4204 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4206 struct nfs4_delegreturndata
*data
;
4207 struct nfs_server
*server
= NFS_SERVER(inode
);
4208 struct rpc_task
*task
;
4209 struct rpc_message msg
= {
4210 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4213 struct rpc_task_setup task_setup_data
= {
4214 .rpc_client
= server
->client
,
4215 .rpc_message
= &msg
,
4216 .callback_ops
= &nfs4_delegreturn_ops
,
4217 .flags
= RPC_TASK_ASYNC
,
4221 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4224 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4225 data
->args
.fhandle
= &data
->fh
;
4226 data
->args
.stateid
= &data
->stateid
;
4227 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4228 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4229 nfs4_stateid_copy(&data
->stateid
, stateid
);
4230 data
->res
.fattr
= &data
->fattr
;
4231 data
->res
.server
= server
;
4232 nfs_fattr_init(data
->res
.fattr
);
4233 data
->timestamp
= jiffies
;
4234 data
->rpc_status
= 0;
4236 task_setup_data
.callback_data
= data
;
4237 msg
.rpc_argp
= &data
->args
;
4238 msg
.rpc_resp
= &data
->res
;
4239 task
= rpc_run_task(&task_setup_data
);
4241 return PTR_ERR(task
);
4244 status
= nfs4_wait_for_completion_rpc_task(task
);
4247 status
= data
->rpc_status
;
4249 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4251 nfs_refresh_inode(inode
, &data
->fattr
);
4257 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4259 struct nfs_server
*server
= NFS_SERVER(inode
);
4260 struct nfs4_exception exception
= { };
4263 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4265 case -NFS4ERR_STALE_STATEID
:
4266 case -NFS4ERR_EXPIRED
:
4270 err
= nfs4_handle_exception(server
, err
, &exception
);
4271 } while (exception
.retry
);
4275 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4276 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4279 * sleep, with exponential backoff, and retry the LOCK operation.
4281 static unsigned long
4282 nfs4_set_lock_task_retry(unsigned long timeout
)
4284 freezable_schedule_timeout_killable(timeout
);
4286 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4287 return NFS4_LOCK_MAXTIMEOUT
;
4291 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4293 struct inode
*inode
= state
->inode
;
4294 struct nfs_server
*server
= NFS_SERVER(inode
);
4295 struct nfs_client
*clp
= server
->nfs_client
;
4296 struct nfs_lockt_args arg
= {
4297 .fh
= NFS_FH(inode
),
4300 struct nfs_lockt_res res
= {
4303 struct rpc_message msg
= {
4304 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4307 .rpc_cred
= state
->owner
->so_cred
,
4309 struct nfs4_lock_state
*lsp
;
4312 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4313 status
= nfs4_set_lock_state(state
, request
);
4316 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4317 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4318 arg
.lock_owner
.s_dev
= server
->s_dev
;
4319 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4322 request
->fl_type
= F_UNLCK
;
4324 case -NFS4ERR_DENIED
:
4327 request
->fl_ops
->fl_release_private(request
);
4332 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4334 struct nfs4_exception exception
= { };
4338 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4339 _nfs4_proc_getlk(state
, cmd
, request
),
4341 } while (exception
.retry
);
4345 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4348 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4350 res
= posix_lock_file_wait(file
, fl
);
4353 res
= flock_lock_file_wait(file
, fl
);
4361 struct nfs4_unlockdata
{
4362 struct nfs_locku_args arg
;
4363 struct nfs_locku_res res
;
4364 struct nfs4_lock_state
*lsp
;
4365 struct nfs_open_context
*ctx
;
4366 struct file_lock fl
;
4367 const struct nfs_server
*server
;
4368 unsigned long timestamp
;
4371 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4372 struct nfs_open_context
*ctx
,
4373 struct nfs4_lock_state
*lsp
,
4374 struct nfs_seqid
*seqid
)
4376 struct nfs4_unlockdata
*p
;
4377 struct inode
*inode
= lsp
->ls_state
->inode
;
4379 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4382 p
->arg
.fh
= NFS_FH(inode
);
4384 p
->arg
.seqid
= seqid
;
4385 p
->res
.seqid
= seqid
;
4386 p
->arg
.stateid
= &lsp
->ls_stateid
;
4388 atomic_inc(&lsp
->ls_count
);
4389 /* Ensure we don't close file until we're done freeing locks! */
4390 p
->ctx
= get_nfs_open_context(ctx
);
4391 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4392 p
->server
= NFS_SERVER(inode
);
4396 static void nfs4_locku_release_calldata(void *data
)
4398 struct nfs4_unlockdata
*calldata
= data
;
4399 nfs_free_seqid(calldata
->arg
.seqid
);
4400 nfs4_put_lock_state(calldata
->lsp
);
4401 put_nfs_open_context(calldata
->ctx
);
4405 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4407 struct nfs4_unlockdata
*calldata
= data
;
4409 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4411 switch (task
->tk_status
) {
4413 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4414 &calldata
->res
.stateid
);
4415 renew_lease(calldata
->server
, calldata
->timestamp
);
4417 case -NFS4ERR_BAD_STATEID
:
4418 case -NFS4ERR_OLD_STATEID
:
4419 case -NFS4ERR_STALE_STATEID
:
4420 case -NFS4ERR_EXPIRED
:
4423 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4424 rpc_restart_call_prepare(task
);
4428 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4430 struct nfs4_unlockdata
*calldata
= data
;
4432 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4434 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4435 /* Note: exit _without_ running nfs4_locku_done */
4436 task
->tk_action
= NULL
;
4439 calldata
->timestamp
= jiffies
;
4440 if (nfs4_setup_sequence(calldata
->server
,
4441 &calldata
->arg
.seq_args
,
4442 &calldata
->res
.seq_res
, task
))
4444 rpc_call_start(task
);
4447 static const struct rpc_call_ops nfs4_locku_ops
= {
4448 .rpc_call_prepare
= nfs4_locku_prepare
,
4449 .rpc_call_done
= nfs4_locku_done
,
4450 .rpc_release
= nfs4_locku_release_calldata
,
4453 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4454 struct nfs_open_context
*ctx
,
4455 struct nfs4_lock_state
*lsp
,
4456 struct nfs_seqid
*seqid
)
4458 struct nfs4_unlockdata
*data
;
4459 struct rpc_message msg
= {
4460 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4461 .rpc_cred
= ctx
->cred
,
4463 struct rpc_task_setup task_setup_data
= {
4464 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4465 .rpc_message
= &msg
,
4466 .callback_ops
= &nfs4_locku_ops
,
4467 .workqueue
= nfsiod_workqueue
,
4468 .flags
= RPC_TASK_ASYNC
,
4471 /* Ensure this is an unlock - when canceling a lock, the
4472 * canceled lock is passed in, and it won't be an unlock.
4474 fl
->fl_type
= F_UNLCK
;
4476 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4478 nfs_free_seqid(seqid
);
4479 return ERR_PTR(-ENOMEM
);
4482 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4483 msg
.rpc_argp
= &data
->arg
;
4484 msg
.rpc_resp
= &data
->res
;
4485 task_setup_data
.callback_data
= data
;
4486 return rpc_run_task(&task_setup_data
);
4489 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4491 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4492 struct nfs_seqid
*seqid
;
4493 struct nfs4_lock_state
*lsp
;
4494 struct rpc_task
*task
;
4496 unsigned char fl_flags
= request
->fl_flags
;
4498 status
= nfs4_set_lock_state(state
, request
);
4499 /* Unlock _before_ we do the RPC call */
4500 request
->fl_flags
|= FL_EXISTS
;
4501 down_read(&nfsi
->rwsem
);
4502 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4503 up_read(&nfsi
->rwsem
);
4506 up_read(&nfsi
->rwsem
);
4509 /* Is this a delegated lock? */
4510 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4512 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4513 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4517 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4518 status
= PTR_ERR(task
);
4521 status
= nfs4_wait_for_completion_rpc_task(task
);
4524 request
->fl_flags
= fl_flags
;
4528 struct nfs4_lockdata
{
4529 struct nfs_lock_args arg
;
4530 struct nfs_lock_res res
;
4531 struct nfs4_lock_state
*lsp
;
4532 struct nfs_open_context
*ctx
;
4533 struct file_lock fl
;
4534 unsigned long timestamp
;
4537 struct nfs_server
*server
;
4540 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4541 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4544 struct nfs4_lockdata
*p
;
4545 struct inode
*inode
= lsp
->ls_state
->inode
;
4546 struct nfs_server
*server
= NFS_SERVER(inode
);
4548 p
= kzalloc(sizeof(*p
), gfp_mask
);
4552 p
->arg
.fh
= NFS_FH(inode
);
4554 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4555 if (p
->arg
.open_seqid
== NULL
)
4557 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4558 if (p
->arg
.lock_seqid
== NULL
)
4559 goto out_free_seqid
;
4560 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4561 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4562 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4563 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4564 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4567 atomic_inc(&lsp
->ls_count
);
4568 p
->ctx
= get_nfs_open_context(ctx
);
4569 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4572 nfs_free_seqid(p
->arg
.open_seqid
);
4578 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4580 struct nfs4_lockdata
*data
= calldata
;
4581 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4583 dprintk("%s: begin!\n", __func__
);
4584 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4586 /* Do we need to do an open_to_lock_owner? */
4587 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4588 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4590 data
->arg
.open_stateid
= &state
->stateid
;
4591 data
->arg
.new_lock_owner
= 1;
4592 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4594 data
->arg
.new_lock_owner
= 0;
4595 data
->timestamp
= jiffies
;
4596 if (nfs4_setup_sequence(data
->server
,
4597 &data
->arg
.seq_args
,
4598 &data
->res
.seq_res
, task
))
4600 rpc_call_start(task
);
4601 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4604 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4606 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4607 nfs4_lock_prepare(task
, calldata
);
4610 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4612 struct nfs4_lockdata
*data
= calldata
;
4614 dprintk("%s: begin!\n", __func__
);
4616 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4619 data
->rpc_status
= task
->tk_status
;
4620 if (data
->arg
.new_lock_owner
!= 0) {
4621 if (data
->rpc_status
== 0)
4622 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4626 if (data
->rpc_status
== 0) {
4627 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4628 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4629 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4632 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4635 static void nfs4_lock_release(void *calldata
)
4637 struct nfs4_lockdata
*data
= calldata
;
4639 dprintk("%s: begin!\n", __func__
);
4640 nfs_free_seqid(data
->arg
.open_seqid
);
4641 if (data
->cancelled
!= 0) {
4642 struct rpc_task
*task
;
4643 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4644 data
->arg
.lock_seqid
);
4646 rpc_put_task_async(task
);
4647 dprintk("%s: cancelling lock!\n", __func__
);
4649 nfs_free_seqid(data
->arg
.lock_seqid
);
4650 nfs4_put_lock_state(data
->lsp
);
4651 put_nfs_open_context(data
->ctx
);
4653 dprintk("%s: done!\n", __func__
);
4656 static const struct rpc_call_ops nfs4_lock_ops
= {
4657 .rpc_call_prepare
= nfs4_lock_prepare
,
4658 .rpc_call_done
= nfs4_lock_done
,
4659 .rpc_release
= nfs4_lock_release
,
4662 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4663 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4664 .rpc_call_done
= nfs4_lock_done
,
4665 .rpc_release
= nfs4_lock_release
,
4668 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4671 case -NFS4ERR_ADMIN_REVOKED
:
4672 case -NFS4ERR_BAD_STATEID
:
4673 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4674 if (new_lock_owner
!= 0 ||
4675 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4676 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4678 case -NFS4ERR_STALE_STATEID
:
4679 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4680 case -NFS4ERR_EXPIRED
:
4681 nfs4_schedule_lease_recovery(server
->nfs_client
);
4685 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4687 struct nfs4_lockdata
*data
;
4688 struct rpc_task
*task
;
4689 struct rpc_message msg
= {
4690 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4691 .rpc_cred
= state
->owner
->so_cred
,
4693 struct rpc_task_setup task_setup_data
= {
4694 .rpc_client
= NFS_CLIENT(state
->inode
),
4695 .rpc_message
= &msg
,
4696 .callback_ops
= &nfs4_lock_ops
,
4697 .workqueue
= nfsiod_workqueue
,
4698 .flags
= RPC_TASK_ASYNC
,
4702 dprintk("%s: begin!\n", __func__
);
4703 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4704 fl
->fl_u
.nfs4_fl
.owner
,
4705 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4709 data
->arg
.block
= 1;
4710 if (recovery_type
> NFS_LOCK_NEW
) {
4711 if (recovery_type
== NFS_LOCK_RECLAIM
)
4712 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4713 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4715 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4716 msg
.rpc_argp
= &data
->arg
;
4717 msg
.rpc_resp
= &data
->res
;
4718 task_setup_data
.callback_data
= data
;
4719 task
= rpc_run_task(&task_setup_data
);
4721 return PTR_ERR(task
);
4722 ret
= nfs4_wait_for_completion_rpc_task(task
);
4724 ret
= data
->rpc_status
;
4726 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4727 data
->arg
.new_lock_owner
, ret
);
4729 data
->cancelled
= 1;
4731 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4735 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4737 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4738 struct nfs4_exception exception
= {
4739 .inode
= state
->inode
,
4744 /* Cache the lock if possible... */
4745 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4747 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4748 if (err
!= -NFS4ERR_DELAY
)
4750 nfs4_handle_exception(server
, err
, &exception
);
4751 } while (exception
.retry
);
4755 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4757 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4758 struct nfs4_exception exception
= {
4759 .inode
= state
->inode
,
4763 err
= nfs4_set_lock_state(state
, request
);
4767 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4769 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4773 case -NFS4ERR_GRACE
:
4774 case -NFS4ERR_DELAY
:
4775 nfs4_handle_exception(server
, err
, &exception
);
4778 } while (exception
.retry
);
4783 #if defined(CONFIG_NFS_V4_1)
4785 * nfs41_check_expired_locks - possibly free a lock stateid
4787 * @state: NFSv4 state for an inode
4789 * Returns NFS_OK if recovery for this stateid is now finished.
4790 * Otherwise a negative NFS4ERR value is returned.
4792 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4794 int status
, ret
= -NFS4ERR_BAD_STATEID
;
4795 struct nfs4_lock_state
*lsp
;
4796 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4798 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4799 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
4800 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4801 if (status
!= NFS_OK
) {
4802 /* Free the stateid unless the server
4803 * informs us the stateid is unrecognized. */
4804 if (status
!= -NFS4ERR_BAD_STATEID
)
4805 nfs41_free_stateid(server
,
4807 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
4816 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4818 int status
= NFS_OK
;
4820 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4821 status
= nfs41_check_expired_locks(state
);
4822 if (status
!= NFS_OK
)
4823 status
= nfs4_lock_expired(state
, request
);
4828 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4830 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4831 unsigned char fl_flags
= request
->fl_flags
;
4832 int status
= -ENOLCK
;
4834 if ((fl_flags
& FL_POSIX
) &&
4835 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4837 /* Is this a delegated open? */
4838 status
= nfs4_set_lock_state(state
, request
);
4841 request
->fl_flags
|= FL_ACCESS
;
4842 status
= do_vfs_lock(request
->fl_file
, request
);
4845 down_read(&nfsi
->rwsem
);
4846 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4847 /* Yes: cache locks! */
4848 /* ...but avoid races with delegation recall... */
4849 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4850 status
= do_vfs_lock(request
->fl_file
, request
);
4853 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4856 /* Note: we always want to sleep here! */
4857 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4858 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4859 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4860 "manager!\n", __func__
);
4862 up_read(&nfsi
->rwsem
);
4864 request
->fl_flags
= fl_flags
;
4868 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4870 struct nfs4_exception exception
= {
4872 .inode
= state
->inode
,
4877 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4878 if (err
== -NFS4ERR_DENIED
)
4880 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4882 } while (exception
.retry
);
4887 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4889 struct nfs_open_context
*ctx
;
4890 struct nfs4_state
*state
;
4891 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4894 /* verify open state */
4895 ctx
= nfs_file_open_context(filp
);
4898 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4901 if (IS_GETLK(cmd
)) {
4903 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4907 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4910 if (request
->fl_type
== F_UNLCK
) {
4912 return nfs4_proc_unlck(state
, cmd
, request
);
4919 * Don't rely on the VFS having checked the file open mode,
4920 * since it won't do this for flock() locks.
4922 switch (request
->fl_type
) {
4924 if (!(filp
->f_mode
& FMODE_READ
))
4928 if (!(filp
->f_mode
& FMODE_WRITE
))
4933 status
= nfs4_proc_setlk(state
, cmd
, request
);
4934 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4936 timeout
= nfs4_set_lock_task_retry(timeout
);
4937 status
= -ERESTARTSYS
;
4940 } while(status
< 0);
4944 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4946 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4947 struct nfs4_exception exception
= { };
4950 err
= nfs4_set_lock_state(state
, fl
);
4954 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4957 printk(KERN_ERR
"NFS: %s: unhandled error "
4958 "%d.\n", __func__
, err
);
4962 case -NFS4ERR_EXPIRED
:
4963 nfs4_schedule_stateid_recovery(server
, state
);
4964 case -NFS4ERR_STALE_CLIENTID
:
4965 case -NFS4ERR_STALE_STATEID
:
4966 nfs4_schedule_lease_recovery(server
->nfs_client
);
4968 case -NFS4ERR_BADSESSION
:
4969 case -NFS4ERR_BADSLOT
:
4970 case -NFS4ERR_BAD_HIGH_SLOT
:
4971 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4972 case -NFS4ERR_DEADSESSION
:
4973 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
4977 * The show must go on: exit, but mark the
4978 * stateid as needing recovery.
4980 case -NFS4ERR_DELEG_REVOKED
:
4981 case -NFS4ERR_ADMIN_REVOKED
:
4982 case -NFS4ERR_BAD_STATEID
:
4983 case -NFS4ERR_OPENMODE
:
4984 nfs4_schedule_stateid_recovery(server
, state
);
4989 * User RPCSEC_GSS context has expired.
4990 * We cannot recover this stateid now, so
4991 * skip it and allow recovery thread to
4997 case -NFS4ERR_DENIED
:
4998 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
5001 case -NFS4ERR_DELAY
:
5004 err
= nfs4_handle_exception(server
, err
, &exception
);
5005 } while (exception
.retry
);
5010 struct nfs_release_lockowner_data
{
5011 struct nfs4_lock_state
*lsp
;
5012 struct nfs_server
*server
;
5013 struct nfs_release_lockowner_args args
;
5016 static void nfs4_release_lockowner_release(void *calldata
)
5018 struct nfs_release_lockowner_data
*data
= calldata
;
5019 nfs4_free_lock_state(data
->server
, data
->lsp
);
5023 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5024 .rpc_release
= nfs4_release_lockowner_release
,
5027 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
5029 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
5030 struct nfs_release_lockowner_data
*data
;
5031 struct rpc_message msg
= {
5032 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5035 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5037 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5041 data
->server
= server
;
5042 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5043 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5044 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5045 msg
.rpc_argp
= &data
->args
;
5046 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5050 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5052 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5053 const void *buf
, size_t buflen
,
5054 int flags
, int type
)
5056 if (strcmp(key
, "") != 0)
5059 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5062 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5063 void *buf
, size_t buflen
, int type
)
5065 if (strcmp(key
, "") != 0)
5068 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5071 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5072 size_t list_len
, const char *name
,
5073 size_t name_len
, int type
)
5075 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5077 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5080 if (list
&& len
<= list_len
)
5081 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5086 * nfs_fhget will use either the mounted_on_fileid or the fileid
5088 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5090 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5091 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5092 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5093 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5096 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5097 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5098 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5102 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5103 const struct qstr
*name
,
5104 struct nfs4_fs_locations
*fs_locations
,
5107 struct nfs_server
*server
= NFS_SERVER(dir
);
5109 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5111 struct nfs4_fs_locations_arg args
= {
5112 .dir_fh
= NFS_FH(dir
),
5117 struct nfs4_fs_locations_res res
= {
5118 .fs_locations
= fs_locations
,
5120 struct rpc_message msg
= {
5121 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5127 dprintk("%s: start\n", __func__
);
5129 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5130 * is not supported */
5131 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5132 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5134 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5136 nfs_fattr_init(&fs_locations
->fattr
);
5137 fs_locations
->server
= server
;
5138 fs_locations
->nlocations
= 0;
5139 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5140 dprintk("%s: returned status = %d\n", __func__
, status
);
5144 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5145 const struct qstr
*name
,
5146 struct nfs4_fs_locations
*fs_locations
,
5149 struct nfs4_exception exception
= { };
5152 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5153 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5155 } while (exception
.retry
);
5159 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5162 struct nfs4_secinfo_arg args
= {
5163 .dir_fh
= NFS_FH(dir
),
5166 struct nfs4_secinfo_res res
= {
5169 struct rpc_message msg
= {
5170 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5175 dprintk("NFS call secinfo %s\n", name
->name
);
5176 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5177 dprintk("NFS reply secinfo: %d\n", status
);
5181 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5182 struct nfs4_secinfo_flavors
*flavors
)
5184 struct nfs4_exception exception
= { };
5187 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5188 _nfs4_proc_secinfo(dir
, name
, flavors
),
5190 } while (exception
.retry
);
5194 #ifdef CONFIG_NFS_V4_1
5196 * Check the exchange flags returned by the server for invalid flags, having
5197 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5200 static int nfs4_check_cl_exchange_flags(u32 flags
)
5202 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5204 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5205 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5207 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5211 return -NFS4ERR_INVAL
;
5215 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5216 struct nfs41_server_scope
*b
)
5218 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5219 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5226 * nfs4_proc_bind_conn_to_session()
5228 * The 4.1 client currently uses the same TCP connection for the
5229 * fore and backchannel.
5231 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5234 struct nfs41_bind_conn_to_session_res res
;
5235 struct rpc_message msg
= {
5237 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5243 dprintk("--> %s\n", __func__
);
5244 BUG_ON(clp
== NULL
);
5246 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5247 if (unlikely(res
.session
== NULL
)) {
5252 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5254 if (memcmp(res
.session
->sess_id
.data
,
5255 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5256 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5260 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5261 dprintk("NFS: %s: Unexpected direction from server\n",
5266 if (res
.use_conn_in_rdma_mode
) {
5267 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5276 dprintk("<-- %s status= %d\n", __func__
, status
);
5281 * nfs4_proc_exchange_id()
5283 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5285 * Since the clientid has expired, all compounds using sessions
5286 * associated with the stale clientid will be returning
5287 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5288 * be in some phase of session reset.
5290 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5292 nfs4_verifier verifier
;
5293 struct nfs41_exchange_id_args args
= {
5294 .verifier
= &verifier
,
5296 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5298 struct nfs41_exchange_id_res res
= {
5302 struct rpc_message msg
= {
5303 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5309 nfs4_init_boot_verifier(clp
, &verifier
);
5310 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
5313 clp
->cl_rpcclient
->cl_nodename
);
5314 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5315 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5316 args
.id_len
, args
.id
);
5318 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5320 if (unlikely(res
.server_owner
== NULL
)) {
5325 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5327 if (unlikely(res
.server_scope
== NULL
)) {
5329 goto out_server_owner
;
5332 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5333 if (unlikely(res
.impl_id
== NULL
)) {
5335 goto out_server_scope
;
5338 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5340 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5343 clp
->cl_clientid
= res
.clientid
;
5344 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5345 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5346 clp
->cl_seqid
= res
.seqid
;
5348 kfree(clp
->cl_serverowner
);
5349 clp
->cl_serverowner
= res
.server_owner
;
5350 res
.server_owner
= NULL
;
5352 /* use the most recent implementation id */
5353 kfree(clp
->cl_implid
);
5354 clp
->cl_implid
= res
.impl_id
;
5356 if (clp
->cl_serverscope
!= NULL
&&
5357 !nfs41_same_server_scope(clp
->cl_serverscope
,
5358 res
.server_scope
)) {
5359 dprintk("%s: server_scope mismatch detected\n",
5361 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5362 kfree(clp
->cl_serverscope
);
5363 clp
->cl_serverscope
= NULL
;
5366 if (clp
->cl_serverscope
== NULL
) {
5367 clp
->cl_serverscope
= res
.server_scope
;
5374 kfree(res
.server_owner
);
5376 kfree(res
.server_scope
);
5378 if (clp
->cl_implid
!= NULL
)
5379 dprintk("NFS reply exchange_id: Server Implementation ID: "
5380 "domain: %s, name: %s, date: %llu,%u\n",
5381 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5382 clp
->cl_implid
->date
.seconds
,
5383 clp
->cl_implid
->date
.nseconds
);
5384 dprintk("NFS reply exchange_id: %d\n", status
);
5388 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5389 struct rpc_cred
*cred
)
5391 struct rpc_message msg
= {
5392 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5398 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5400 dprintk("NFS: Got error %d from the server %s on "
5401 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5405 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5406 struct rpc_cred
*cred
)
5411 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5412 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5414 case -NFS4ERR_DELAY
:
5415 case -NFS4ERR_CLIENTID_BUSY
:
5425 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5427 struct rpc_cred
*cred
;
5430 if (clp
->cl_mvops
->minor_version
< 1)
5432 if (clp
->cl_exchange_flags
== 0)
5434 cred
= nfs4_get_exchange_id_cred(clp
);
5435 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5440 case -NFS4ERR_STALE_CLIENTID
:
5441 clp
->cl_exchange_flags
= 0;
5447 struct nfs4_get_lease_time_data
{
5448 struct nfs4_get_lease_time_args
*args
;
5449 struct nfs4_get_lease_time_res
*res
;
5450 struct nfs_client
*clp
;
5453 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5457 struct nfs4_get_lease_time_data
*data
=
5458 (struct nfs4_get_lease_time_data
*)calldata
;
5460 dprintk("--> %s\n", __func__
);
5461 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5462 /* just setup sequence, do not trigger session recovery
5463 since we're invoked within one */
5464 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
5465 &data
->args
->la_seq_args
,
5466 &data
->res
->lr_seq_res
, task
);
5468 BUG_ON(ret
== -EAGAIN
);
5469 rpc_call_start(task
);
5470 dprintk("<-- %s\n", __func__
);
5474 * Called from nfs4_state_manager thread for session setup, so don't recover
5475 * from sequence operation or clientid errors.
5477 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5479 struct nfs4_get_lease_time_data
*data
=
5480 (struct nfs4_get_lease_time_data
*)calldata
;
5482 dprintk("--> %s\n", __func__
);
5483 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5485 switch (task
->tk_status
) {
5486 case -NFS4ERR_DELAY
:
5487 case -NFS4ERR_GRACE
:
5488 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5489 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5490 task
->tk_status
= 0;
5492 case -NFS4ERR_RETRY_UNCACHED_REP
:
5493 rpc_restart_call_prepare(task
);
5496 dprintk("<-- %s\n", __func__
);
5499 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5500 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5501 .rpc_call_done
= nfs4_get_lease_time_done
,
5504 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5506 struct rpc_task
*task
;
5507 struct nfs4_get_lease_time_args args
;
5508 struct nfs4_get_lease_time_res res
= {
5509 .lr_fsinfo
= fsinfo
,
5511 struct nfs4_get_lease_time_data data
= {
5516 struct rpc_message msg
= {
5517 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5521 struct rpc_task_setup task_setup
= {
5522 .rpc_client
= clp
->cl_rpcclient
,
5523 .rpc_message
= &msg
,
5524 .callback_ops
= &nfs4_get_lease_time_ops
,
5525 .callback_data
= &data
,
5526 .flags
= RPC_TASK_TIMEOUT
,
5530 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5531 dprintk("--> %s\n", __func__
);
5532 task
= rpc_run_task(&task_setup
);
5535 status
= PTR_ERR(task
);
5537 status
= task
->tk_status
;
5540 dprintk("<-- %s return %d\n", __func__
, status
);
5545 static struct nfs4_slot
*nfs4_alloc_slots(u32 max_slots
, gfp_t gfp_flags
)
5547 return kcalloc(max_slots
, sizeof(struct nfs4_slot
), gfp_flags
);
5550 static void nfs4_add_and_init_slots(struct nfs4_slot_table
*tbl
,
5551 struct nfs4_slot
*new,
5555 struct nfs4_slot
*old
= NULL
;
5558 spin_lock(&tbl
->slot_tbl_lock
);
5562 tbl
->max_slots
= max_slots
;
5564 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
5565 for (i
= 0; i
< tbl
->max_slots
; i
++)
5566 tbl
->slots
[i
].seq_nr
= ivalue
;
5567 spin_unlock(&tbl
->slot_tbl_lock
);
5572 * (re)Initialise a slot table
5574 static int nfs4_realloc_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
5577 struct nfs4_slot
*new = NULL
;
5580 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
5581 max_reqs
, tbl
->max_slots
);
5583 /* Does the newly negotiated max_reqs match the existing slot table? */
5584 if (max_reqs
!= tbl
->max_slots
) {
5585 new = nfs4_alloc_slots(max_reqs
, GFP_NOFS
);
5591 nfs4_add_and_init_slots(tbl
, new, max_reqs
, ivalue
);
5592 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5593 tbl
, tbl
->slots
, tbl
->max_slots
);
5595 dprintk("<-- %s: return %d\n", __func__
, ret
);
5599 /* Destroy the slot table */
5600 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
5602 if (session
->fc_slot_table
.slots
!= NULL
) {
5603 kfree(session
->fc_slot_table
.slots
);
5604 session
->fc_slot_table
.slots
= NULL
;
5606 if (session
->bc_slot_table
.slots
!= NULL
) {
5607 kfree(session
->bc_slot_table
.slots
);
5608 session
->bc_slot_table
.slots
= NULL
;
5614 * Initialize or reset the forechannel and backchannel tables
5616 static int nfs4_setup_session_slot_tables(struct nfs4_session
*ses
)
5618 struct nfs4_slot_table
*tbl
;
5621 dprintk("--> %s\n", __func__
);
5623 tbl
= &ses
->fc_slot_table
;
5624 status
= nfs4_realloc_slot_table(tbl
, ses
->fc_attrs
.max_reqs
, 1);
5625 if (status
) /* -ENOMEM */
5628 tbl
= &ses
->bc_slot_table
;
5629 status
= nfs4_realloc_slot_table(tbl
, ses
->bc_attrs
.max_reqs
, 0);
5630 if (status
&& tbl
->slots
== NULL
)
5631 /* Fore and back channel share a connection so get
5632 * both slot tables or neither */
5633 nfs4_destroy_slot_tables(ses
);
5637 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5639 struct nfs4_session
*session
;
5640 struct nfs4_slot_table
*tbl
;
5642 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5646 tbl
= &session
->fc_slot_table
;
5647 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5648 spin_lock_init(&tbl
->slot_tbl_lock
);
5649 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5650 init_completion(&tbl
->complete
);
5652 tbl
= &session
->bc_slot_table
;
5653 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5654 spin_lock_init(&tbl
->slot_tbl_lock
);
5655 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5656 init_completion(&tbl
->complete
);
5658 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5664 void nfs4_destroy_session(struct nfs4_session
*session
)
5666 struct rpc_xprt
*xprt
;
5667 struct rpc_cred
*cred
;
5669 cred
= nfs4_get_exchange_id_cred(session
->clp
);
5670 nfs4_proc_destroy_session(session
, cred
);
5675 xprt
= rcu_dereference(session
->clp
->cl_rpcclient
->cl_xprt
);
5677 dprintk("%s Destroy backchannel for xprt %p\n",
5679 xprt_destroy_backchannel(xprt
, NFS41_BC_MIN_CALLBACKS
);
5680 nfs4_destroy_slot_tables(session
);
5685 * Initialize the values to be used by the client in CREATE_SESSION
5686 * If nfs4_init_session set the fore channel request and response sizes,
5689 * Set the back channel max_resp_sz_cached to zero to force the client to
5690 * always set csa_cachethis to FALSE because the current implementation
5691 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5693 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5695 struct nfs4_session
*session
= args
->client
->cl_session
;
5696 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5697 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5700 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5702 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5703 /* Fore channel attributes */
5704 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5705 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5706 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5707 args
->fc_attrs
.max_reqs
= max_session_slots
;
5709 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5710 "max_ops=%u max_reqs=%u\n",
5712 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5713 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5715 /* Back channel attributes */
5716 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5717 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5718 args
->bc_attrs
.max_resp_sz_cached
= 0;
5719 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5720 args
->bc_attrs
.max_reqs
= 1;
5722 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5723 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5725 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5726 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5727 args
->bc_attrs
.max_reqs
);
5730 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5732 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5733 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5735 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5738 * Our requested max_ops is the minimum we need; we're not
5739 * prepared to break up compounds into smaller pieces than that.
5740 * So, no point even trying to continue if the server won't
5743 if (rcvd
->max_ops
< sent
->max_ops
)
5745 if (rcvd
->max_reqs
== 0)
5747 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5748 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5752 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5754 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5755 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5757 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5759 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5761 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5763 /* These would render the backchannel useless: */
5764 if (rcvd
->max_ops
!= sent
->max_ops
)
5766 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5771 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5772 struct nfs4_session
*session
)
5776 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5779 return nfs4_verify_back_channel_attrs(args
, session
);
5782 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5783 struct rpc_cred
*cred
)
5785 struct nfs4_session
*session
= clp
->cl_session
;
5786 struct nfs41_create_session_args args
= {
5788 .cb_program
= NFS4_CALLBACK
,
5790 struct nfs41_create_session_res res
= {
5793 struct rpc_message msg
= {
5794 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5801 nfs4_init_channel_attrs(&args
);
5802 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5804 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5807 /* Verify the session's negotiated channel_attrs values */
5808 status
= nfs4_verify_channel_attrs(&args
, session
);
5810 /* Increment the clientid slot sequence id */
5818 * Issues a CREATE_SESSION operation to the server.
5819 * It is the responsibility of the caller to verify the session is
5820 * expired before calling this routine.
5822 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5826 struct nfs4_session
*session
= clp
->cl_session
;
5828 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5830 status
= _nfs4_proc_create_session(clp
, cred
);
5834 /* Init or reset the session slot tables */
5835 status
= nfs4_setup_session_slot_tables(session
);
5836 dprintk("slot table setup returned %d\n", status
);
5840 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5841 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5842 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5844 dprintk("<-- %s\n", __func__
);
5849 * Issue the over-the-wire RPC DESTROY_SESSION.
5850 * The caller must serialize access to this routine.
5852 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5853 struct rpc_cred
*cred
)
5855 struct rpc_message msg
= {
5856 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5857 .rpc_argp
= session
,
5862 dprintk("--> nfs4_proc_destroy_session\n");
5864 /* session is still being setup */
5865 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5868 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5871 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5872 "Session has been destroyed regardless...\n", status
);
5874 dprintk("<-- nfs4_proc_destroy_session\n");
5879 * With sessions, the client is not marked ready until after a
5880 * successful EXCHANGE_ID and CREATE_SESSION.
5882 * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate
5883 * other versions of NFS can be tried.
5885 static int nfs41_check_session_ready(struct nfs_client
*clp
)
5889 if (clp
->cl_cons_state
== NFS_CS_SESSION_INITING
) {
5890 ret
= nfs4_client_recover_expired_lease(clp
);
5894 if (clp
->cl_cons_state
< NFS_CS_READY
)
5895 return -EPROTONOSUPPORT
;
5900 int nfs4_init_session(struct nfs_server
*server
)
5902 struct nfs_client
*clp
= server
->nfs_client
;
5903 struct nfs4_session
*session
;
5904 unsigned int rsize
, wsize
;
5906 if (!nfs4_has_session(clp
))
5909 session
= clp
->cl_session
;
5910 spin_lock(&clp
->cl_lock
);
5911 if (test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
)) {
5913 rsize
= server
->rsize
;
5915 rsize
= NFS_MAX_FILE_IO_SIZE
;
5916 wsize
= server
->wsize
;
5918 wsize
= NFS_MAX_FILE_IO_SIZE
;
5920 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5921 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5923 spin_unlock(&clp
->cl_lock
);
5925 return nfs41_check_session_ready(clp
);
5928 int nfs4_init_ds_session(struct nfs_client
*clp
, unsigned long lease_time
)
5930 struct nfs4_session
*session
= clp
->cl_session
;
5933 spin_lock(&clp
->cl_lock
);
5934 if (test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
)) {
5936 * Do not set NFS_CS_CHECK_LEASE_TIME instead set the
5937 * DS lease to be equal to the MDS lease.
5939 clp
->cl_lease_time
= lease_time
;
5940 clp
->cl_last_renewal
= jiffies
;
5942 spin_unlock(&clp
->cl_lock
);
5944 ret
= nfs41_check_session_ready(clp
);
5947 /* Test for the DS role */
5948 if (!is_ds_client(clp
))
5952 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5956 * Renew the cl_session lease.
5958 struct nfs4_sequence_data
{
5959 struct nfs_client
*clp
;
5960 struct nfs4_sequence_args args
;
5961 struct nfs4_sequence_res res
;
5964 static void nfs41_sequence_release(void *data
)
5966 struct nfs4_sequence_data
*calldata
= data
;
5967 struct nfs_client
*clp
= calldata
->clp
;
5969 if (atomic_read(&clp
->cl_count
) > 1)
5970 nfs4_schedule_state_renewal(clp
);
5971 nfs_put_client(clp
);
5975 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5977 switch(task
->tk_status
) {
5978 case -NFS4ERR_DELAY
:
5979 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5982 nfs4_schedule_lease_recovery(clp
);
5987 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5989 struct nfs4_sequence_data
*calldata
= data
;
5990 struct nfs_client
*clp
= calldata
->clp
;
5992 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5995 if (task
->tk_status
< 0) {
5996 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5997 if (atomic_read(&clp
->cl_count
) == 1)
6000 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
6001 rpc_restart_call_prepare(task
);
6005 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
6007 dprintk("<-- %s\n", __func__
);
6010 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6012 struct nfs4_sequence_data
*calldata
= data
;
6013 struct nfs_client
*clp
= calldata
->clp
;
6014 struct nfs4_sequence_args
*args
;
6015 struct nfs4_sequence_res
*res
;
6017 args
= task
->tk_msg
.rpc_argp
;
6018 res
= task
->tk_msg
.rpc_resp
;
6020 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
))
6022 rpc_call_start(task
);
6025 static const struct rpc_call_ops nfs41_sequence_ops
= {
6026 .rpc_call_done
= nfs41_sequence_call_done
,
6027 .rpc_call_prepare
= nfs41_sequence_prepare
,
6028 .rpc_release
= nfs41_sequence_release
,
6031 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6033 struct nfs4_sequence_data
*calldata
;
6034 struct rpc_message msg
= {
6035 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6038 struct rpc_task_setup task_setup_data
= {
6039 .rpc_client
= clp
->cl_rpcclient
,
6040 .rpc_message
= &msg
,
6041 .callback_ops
= &nfs41_sequence_ops
,
6042 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
6045 if (!atomic_inc_not_zero(&clp
->cl_count
))
6046 return ERR_PTR(-EIO
);
6047 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6048 if (calldata
== NULL
) {
6049 nfs_put_client(clp
);
6050 return ERR_PTR(-ENOMEM
);
6052 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6053 msg
.rpc_argp
= &calldata
->args
;
6054 msg
.rpc_resp
= &calldata
->res
;
6055 calldata
->clp
= clp
;
6056 task_setup_data
.callback_data
= calldata
;
6058 return rpc_run_task(&task_setup_data
);
6061 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6063 struct rpc_task
*task
;
6066 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6068 task
= _nfs41_proc_sequence(clp
, cred
);
6070 ret
= PTR_ERR(task
);
6072 rpc_put_task_async(task
);
6073 dprintk("<-- %s status=%d\n", __func__
, ret
);
6077 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6079 struct rpc_task
*task
;
6082 task
= _nfs41_proc_sequence(clp
, cred
);
6084 ret
= PTR_ERR(task
);
6087 ret
= rpc_wait_for_completion_task(task
);
6089 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6091 if (task
->tk_status
== 0)
6092 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6093 ret
= task
->tk_status
;
6097 dprintk("<-- %s status=%d\n", __func__
, ret
);
6101 struct nfs4_reclaim_complete_data
{
6102 struct nfs_client
*clp
;
6103 struct nfs41_reclaim_complete_args arg
;
6104 struct nfs41_reclaim_complete_res res
;
6107 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6109 struct nfs4_reclaim_complete_data
*calldata
= data
;
6111 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
6112 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
6113 &calldata
->arg
.seq_args
,
6114 &calldata
->res
.seq_res
, task
))
6117 rpc_call_start(task
);
6120 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6122 switch(task
->tk_status
) {
6124 case -NFS4ERR_COMPLETE_ALREADY
:
6125 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6127 case -NFS4ERR_DELAY
:
6128 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6130 case -NFS4ERR_RETRY_UNCACHED_REP
:
6133 nfs4_schedule_lease_recovery(clp
);
6138 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6140 struct nfs4_reclaim_complete_data
*calldata
= data
;
6141 struct nfs_client
*clp
= calldata
->clp
;
6142 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6144 dprintk("--> %s\n", __func__
);
6145 if (!nfs41_sequence_done(task
, res
))
6148 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6149 rpc_restart_call_prepare(task
);
6152 dprintk("<-- %s\n", __func__
);
6155 static void nfs4_free_reclaim_complete_data(void *data
)
6157 struct nfs4_reclaim_complete_data
*calldata
= data
;
6162 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6163 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6164 .rpc_call_done
= nfs4_reclaim_complete_done
,
6165 .rpc_release
= nfs4_free_reclaim_complete_data
,
6169 * Issue a global reclaim complete.
6171 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6173 struct nfs4_reclaim_complete_data
*calldata
;
6174 struct rpc_task
*task
;
6175 struct rpc_message msg
= {
6176 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6178 struct rpc_task_setup task_setup_data
= {
6179 .rpc_client
= clp
->cl_rpcclient
,
6180 .rpc_message
= &msg
,
6181 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6182 .flags
= RPC_TASK_ASYNC
,
6184 int status
= -ENOMEM
;
6186 dprintk("--> %s\n", __func__
);
6187 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6188 if (calldata
== NULL
)
6190 calldata
->clp
= clp
;
6191 calldata
->arg
.one_fs
= 0;
6193 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6194 msg
.rpc_argp
= &calldata
->arg
;
6195 msg
.rpc_resp
= &calldata
->res
;
6196 task_setup_data
.callback_data
= calldata
;
6197 task
= rpc_run_task(&task_setup_data
);
6199 status
= PTR_ERR(task
);
6202 status
= nfs4_wait_for_completion_rpc_task(task
);
6204 status
= task
->tk_status
;
6208 dprintk("<-- %s status=%d\n", __func__
, status
);
6213 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6215 struct nfs4_layoutget
*lgp
= calldata
;
6216 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6218 dprintk("--> %s\n", __func__
);
6219 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6220 * right now covering the LAYOUTGET we are about to send.
6221 * However, that is not so catastrophic, and there seems
6222 * to be no way to prevent it completely.
6224 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
6225 &lgp
->res
.seq_res
, task
))
6227 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6228 NFS_I(lgp
->args
.inode
)->layout
,
6229 lgp
->args
.ctx
->state
)) {
6230 rpc_exit(task
, NFS4_OK
);
6233 rpc_call_start(task
);
6236 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6238 struct nfs4_layoutget
*lgp
= calldata
;
6239 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6241 dprintk("--> %s\n", __func__
);
6243 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
6246 switch (task
->tk_status
) {
6249 case -NFS4ERR_LAYOUTTRYLATER
:
6250 case -NFS4ERR_RECALLCONFLICT
:
6251 task
->tk_status
= -NFS4ERR_DELAY
;
6254 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6255 rpc_restart_call_prepare(task
);
6259 dprintk("<-- %s\n", __func__
);
6262 static size_t max_response_pages(struct nfs_server
*server
)
6264 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6265 return nfs_page_array_len(0, max_resp_sz
);
6268 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6275 for (i
= 0; i
< size
; i
++) {
6278 __free_page(pages
[i
]);
6283 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6285 struct page
**pages
;
6288 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6290 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6294 for (i
= 0; i
< size
; i
++) {
6295 pages
[i
] = alloc_page(gfp_flags
);
6297 dprintk("%s: failed to allocate page\n", __func__
);
6298 nfs4_free_pages(pages
, size
);
6306 static void nfs4_layoutget_release(void *calldata
)
6308 struct nfs4_layoutget
*lgp
= calldata
;
6309 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6310 size_t max_pages
= max_response_pages(server
);
6312 dprintk("--> %s\n", __func__
);
6313 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6314 put_nfs_open_context(lgp
->args
.ctx
);
6316 dprintk("<-- %s\n", __func__
);
6319 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6320 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6321 .rpc_call_done
= nfs4_layoutget_done
,
6322 .rpc_release
= nfs4_layoutget_release
,
6325 struct pnfs_layout_segment
*
6326 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6328 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6329 size_t max_pages
= max_response_pages(server
);
6330 struct rpc_task
*task
;
6331 struct rpc_message msg
= {
6332 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6333 .rpc_argp
= &lgp
->args
,
6334 .rpc_resp
= &lgp
->res
,
6336 struct rpc_task_setup task_setup_data
= {
6337 .rpc_client
= server
->client
,
6338 .rpc_message
= &msg
,
6339 .callback_ops
= &nfs4_layoutget_call_ops
,
6340 .callback_data
= lgp
,
6341 .flags
= RPC_TASK_ASYNC
,
6343 struct pnfs_layout_segment
*lseg
= NULL
;
6346 dprintk("--> %s\n", __func__
);
6348 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6349 if (!lgp
->args
.layout
.pages
) {
6350 nfs4_layoutget_release(lgp
);
6351 return ERR_PTR(-ENOMEM
);
6353 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6355 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6356 lgp
->res
.seq_res
.sr_slot
= NULL
;
6357 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6358 task
= rpc_run_task(&task_setup_data
);
6360 return ERR_CAST(task
);
6361 status
= nfs4_wait_for_completion_rpc_task(task
);
6363 status
= task
->tk_status
;
6365 lseg
= pnfs_layout_process(lgp
);
6367 dprintk("<-- %s status=%d\n", __func__
, status
);
6369 return ERR_PTR(status
);
6374 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6376 struct nfs4_layoutreturn
*lrp
= calldata
;
6378 dprintk("--> %s\n", __func__
);
6379 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
6380 &lrp
->res
.seq_res
, task
))
6382 rpc_call_start(task
);
6385 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6387 struct nfs4_layoutreturn
*lrp
= calldata
;
6388 struct nfs_server
*server
;
6390 dprintk("--> %s\n", __func__
);
6392 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
6395 server
= NFS_SERVER(lrp
->args
.inode
);
6396 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6397 rpc_restart_call_prepare(task
);
6400 dprintk("<-- %s\n", __func__
);
6403 static void nfs4_layoutreturn_release(void *calldata
)
6405 struct nfs4_layoutreturn
*lrp
= calldata
;
6406 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6408 dprintk("--> %s\n", __func__
);
6409 spin_lock(&lo
->plh_inode
->i_lock
);
6410 if (lrp
->res
.lrs_present
)
6411 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6412 lo
->plh_block_lgets
--;
6413 spin_unlock(&lo
->plh_inode
->i_lock
);
6414 pnfs_put_layout_hdr(lrp
->args
.layout
);
6416 dprintk("<-- %s\n", __func__
);
6419 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6420 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6421 .rpc_call_done
= nfs4_layoutreturn_done
,
6422 .rpc_release
= nfs4_layoutreturn_release
,
6425 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6427 struct rpc_task
*task
;
6428 struct rpc_message msg
= {
6429 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6430 .rpc_argp
= &lrp
->args
,
6431 .rpc_resp
= &lrp
->res
,
6433 struct rpc_task_setup task_setup_data
= {
6434 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6435 .rpc_message
= &msg
,
6436 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6437 .callback_data
= lrp
,
6441 dprintk("--> %s\n", __func__
);
6442 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6443 task
= rpc_run_task(&task_setup_data
);
6445 return PTR_ERR(task
);
6446 status
= task
->tk_status
;
6447 dprintk("<-- %s status=%d\n", __func__
, status
);
6453 * Retrieve the list of Data Server devices from the MDS.
6455 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6456 const struct nfs_fh
*fh
,
6457 struct pnfs_devicelist
*devlist
)
6459 struct nfs4_getdevicelist_args args
= {
6461 .layoutclass
= server
->pnfs_curr_ld
->id
,
6463 struct nfs4_getdevicelist_res res
= {
6466 struct rpc_message msg
= {
6467 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6473 dprintk("--> %s\n", __func__
);
6474 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6476 dprintk("<-- %s status=%d\n", __func__
, status
);
6480 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6481 const struct nfs_fh
*fh
,
6482 struct pnfs_devicelist
*devlist
)
6484 struct nfs4_exception exception
= { };
6488 err
= nfs4_handle_exception(server
,
6489 _nfs4_getdevicelist(server
, fh
, devlist
),
6491 } while (exception
.retry
);
6493 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6494 err
, devlist
->num_devs
);
6498 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6501 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6503 struct nfs4_getdeviceinfo_args args
= {
6506 struct nfs4_getdeviceinfo_res res
= {
6509 struct rpc_message msg
= {
6510 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6516 dprintk("--> %s\n", __func__
);
6517 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6518 dprintk("<-- %s status=%d\n", __func__
, status
);
6523 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6525 struct nfs4_exception exception
= { };
6529 err
= nfs4_handle_exception(server
,
6530 _nfs4_proc_getdeviceinfo(server
, pdev
),
6532 } while (exception
.retry
);
6535 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6537 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6539 struct nfs4_layoutcommit_data
*data
= calldata
;
6540 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6542 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
6543 &data
->res
.seq_res
, task
))
6545 rpc_call_start(task
);
6549 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6551 struct nfs4_layoutcommit_data
*data
= calldata
;
6552 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6554 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6557 switch (task
->tk_status
) { /* Just ignore these failures */
6558 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6559 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6560 case -NFS4ERR_BADLAYOUT
: /* no layout */
6561 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6562 task
->tk_status
= 0;
6565 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6569 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6570 rpc_restart_call_prepare(task
);
6576 static void nfs4_layoutcommit_release(void *calldata
)
6578 struct nfs4_layoutcommit_data
*data
= calldata
;
6579 struct pnfs_layout_segment
*lseg
, *tmp
;
6580 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
6582 pnfs_cleanup_layoutcommit(data
);
6583 /* Matched by references in pnfs_set_layoutcommit */
6584 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
6585 list_del_init(&lseg
->pls_lc_list
);
6586 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
6588 pnfs_put_lseg(lseg
);
6591 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
6592 smp_mb__after_clear_bit();
6593 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
6595 put_rpccred(data
->cred
);
6599 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6600 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6601 .rpc_call_done
= nfs4_layoutcommit_done
,
6602 .rpc_release
= nfs4_layoutcommit_release
,
6606 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6608 struct rpc_message msg
= {
6609 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6610 .rpc_argp
= &data
->args
,
6611 .rpc_resp
= &data
->res
,
6612 .rpc_cred
= data
->cred
,
6614 struct rpc_task_setup task_setup_data
= {
6615 .task
= &data
->task
,
6616 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6617 .rpc_message
= &msg
,
6618 .callback_ops
= &nfs4_layoutcommit_ops
,
6619 .callback_data
= data
,
6620 .flags
= RPC_TASK_ASYNC
,
6622 struct rpc_task
*task
;
6625 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6626 "lbw: %llu inode %lu\n",
6627 data
->task
.tk_pid
, sync
,
6628 data
->args
.lastbytewritten
,
6629 data
->args
.inode
->i_ino
);
6631 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6632 task
= rpc_run_task(&task_setup_data
);
6634 return PTR_ERR(task
);
6637 status
= nfs4_wait_for_completion_rpc_task(task
);
6640 status
= task
->tk_status
;
6642 dprintk("%s: status %d\n", __func__
, status
);
6648 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6649 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6651 struct nfs41_secinfo_no_name_args args
= {
6652 .style
= SECINFO_STYLE_CURRENT_FH
,
6654 struct nfs4_secinfo_res res
= {
6657 struct rpc_message msg
= {
6658 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6662 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6666 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6667 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6669 struct nfs4_exception exception
= { };
6672 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6675 case -NFS4ERR_WRONGSEC
:
6676 case -NFS4ERR_NOTSUPP
:
6679 err
= nfs4_handle_exception(server
, err
, &exception
);
6681 } while (exception
.retry
);
6687 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6688 struct nfs_fsinfo
*info
)
6692 rpc_authflavor_t flavor
;
6693 struct nfs4_secinfo_flavors
*flavors
;
6695 page
= alloc_page(GFP_KERNEL
);
6701 flavors
= page_address(page
);
6702 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6705 * Fall back on "guess and check" method if
6706 * the server doesn't support SECINFO_NO_NAME
6708 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6709 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6715 flavor
= nfs_find_best_sec(flavors
);
6717 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6727 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6730 struct nfs41_test_stateid_args args
= {
6733 struct nfs41_test_stateid_res res
;
6734 struct rpc_message msg
= {
6735 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6740 dprintk("NFS call test_stateid %p\n", stateid
);
6741 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6742 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6743 if (status
!= NFS_OK
) {
6744 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6747 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6752 * nfs41_test_stateid - perform a TEST_STATEID operation
6754 * @server: server / transport on which to perform the operation
6755 * @stateid: state ID to test
6757 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6758 * Otherwise a negative NFS4ERR value is returned if the operation
6759 * failed or the state ID is not currently valid.
6761 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6763 struct nfs4_exception exception
= { };
6766 err
= _nfs41_test_stateid(server
, stateid
);
6767 if (err
!= -NFS4ERR_DELAY
)
6769 nfs4_handle_exception(server
, err
, &exception
);
6770 } while (exception
.retry
);
6774 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6776 struct nfs41_free_stateid_args args
= {
6779 struct nfs41_free_stateid_res res
;
6780 struct rpc_message msg
= {
6781 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6787 dprintk("NFS call free_stateid %p\n", stateid
);
6788 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6789 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6790 &args
.seq_args
, &res
.seq_res
, 1);
6791 dprintk("NFS reply free_stateid: %d\n", status
);
6796 * nfs41_free_stateid - perform a FREE_STATEID operation
6798 * @server: server / transport on which to perform the operation
6799 * @stateid: state ID to release
6801 * Returns NFS_OK if the server freed "stateid". Otherwise a
6802 * negative NFS4ERR value is returned.
6804 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6806 struct nfs4_exception exception
= { };
6809 err
= _nfs4_free_stateid(server
, stateid
);
6810 if (err
!= -NFS4ERR_DELAY
)
6812 nfs4_handle_exception(server
, err
, &exception
);
6813 } while (exception
.retry
);
6817 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6818 const nfs4_stateid
*s2
)
6820 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6823 if (s1
->seqid
== s2
->seqid
)
6825 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6831 #endif /* CONFIG_NFS_V4_1 */
6833 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6834 const nfs4_stateid
*s2
)
6836 return nfs4_stateid_match(s1
, s2
);
6840 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6841 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6842 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6843 .recover_open
= nfs4_open_reclaim
,
6844 .recover_lock
= nfs4_lock_reclaim
,
6845 .establish_clid
= nfs4_init_clientid
,
6846 .get_clid_cred
= nfs4_get_setclientid_cred
,
6849 #if defined(CONFIG_NFS_V4_1)
6850 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6851 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6852 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6853 .recover_open
= nfs4_open_reclaim
,
6854 .recover_lock
= nfs4_lock_reclaim
,
6855 .establish_clid
= nfs41_init_clientid
,
6856 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6857 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6859 #endif /* CONFIG_NFS_V4_1 */
6861 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6862 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6863 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6864 .recover_open
= nfs4_open_expired
,
6865 .recover_lock
= nfs4_lock_expired
,
6866 .establish_clid
= nfs4_init_clientid
,
6867 .get_clid_cred
= nfs4_get_setclientid_cred
,
6870 #if defined(CONFIG_NFS_V4_1)
6871 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6872 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6873 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6874 .recover_open
= nfs41_open_expired
,
6875 .recover_lock
= nfs41_lock_expired
,
6876 .establish_clid
= nfs41_init_clientid
,
6877 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6879 #endif /* CONFIG_NFS_V4_1 */
6881 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6882 .sched_state_renewal
= nfs4_proc_async_renew
,
6883 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6884 .renew_lease
= nfs4_proc_renew
,
6887 #if defined(CONFIG_NFS_V4_1)
6888 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6889 .sched_state_renewal
= nfs41_proc_async_sequence
,
6890 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6891 .renew_lease
= nfs4_proc_sequence
,
6895 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6897 .call_sync
= _nfs4_call_sync
,
6898 .match_stateid
= nfs4_match_stateid
,
6899 .find_root_sec
= nfs4_find_root_sec
,
6900 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6901 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6902 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6905 #if defined(CONFIG_NFS_V4_1)
6906 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6908 .call_sync
= _nfs4_call_sync_session
,
6909 .match_stateid
= nfs41_match_stateid
,
6910 .find_root_sec
= nfs41_find_root_sec
,
6911 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6912 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6913 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6917 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6918 [0] = &nfs_v4_0_minor_ops
,
6919 #if defined(CONFIG_NFS_V4_1)
6920 [1] = &nfs_v4_1_minor_ops
,
6924 const struct inode_operations nfs4_dir_inode_operations
= {
6925 .create
= nfs_create
,
6926 .lookup
= nfs_lookup
,
6927 .atomic_open
= nfs_atomic_open
,
6929 .unlink
= nfs_unlink
,
6930 .symlink
= nfs_symlink
,
6934 .rename
= nfs_rename
,
6935 .permission
= nfs_permission
,
6936 .getattr
= nfs_getattr
,
6937 .setattr
= nfs_setattr
,
6938 .getxattr
= generic_getxattr
,
6939 .setxattr
= generic_setxattr
,
6940 .listxattr
= generic_listxattr
,
6941 .removexattr
= generic_removexattr
,
6944 static const struct inode_operations nfs4_file_inode_operations
= {
6945 .permission
= nfs_permission
,
6946 .getattr
= nfs_getattr
,
6947 .setattr
= nfs_setattr
,
6948 .getxattr
= generic_getxattr
,
6949 .setxattr
= generic_setxattr
,
6950 .listxattr
= generic_listxattr
,
6951 .removexattr
= generic_removexattr
,
6954 const struct nfs_rpc_ops nfs_v4_clientops
= {
6955 .version
= 4, /* protocol version */
6956 .dentry_ops
= &nfs4_dentry_operations
,
6957 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6958 .file_inode_ops
= &nfs4_file_inode_operations
,
6959 .file_ops
= &nfs4_file_operations
,
6960 .getroot
= nfs4_proc_get_root
,
6961 .submount
= nfs4_submount
,
6962 .try_mount
= nfs4_try_mount
,
6963 .getattr
= nfs4_proc_getattr
,
6964 .setattr
= nfs4_proc_setattr
,
6965 .lookup
= nfs4_proc_lookup
,
6966 .access
= nfs4_proc_access
,
6967 .readlink
= nfs4_proc_readlink
,
6968 .create
= nfs4_proc_create
,
6969 .remove
= nfs4_proc_remove
,
6970 .unlink_setup
= nfs4_proc_unlink_setup
,
6971 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
6972 .unlink_done
= nfs4_proc_unlink_done
,
6973 .rename
= nfs4_proc_rename
,
6974 .rename_setup
= nfs4_proc_rename_setup
,
6975 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
6976 .rename_done
= nfs4_proc_rename_done
,
6977 .link
= nfs4_proc_link
,
6978 .symlink
= nfs4_proc_symlink
,
6979 .mkdir
= nfs4_proc_mkdir
,
6980 .rmdir
= nfs4_proc_remove
,
6981 .readdir
= nfs4_proc_readdir
,
6982 .mknod
= nfs4_proc_mknod
,
6983 .statfs
= nfs4_proc_statfs
,
6984 .fsinfo
= nfs4_proc_fsinfo
,
6985 .pathconf
= nfs4_proc_pathconf
,
6986 .set_capabilities
= nfs4_server_capabilities
,
6987 .decode_dirent
= nfs4_decode_dirent
,
6988 .read_setup
= nfs4_proc_read_setup
,
6989 .read_pageio_init
= pnfs_pageio_init_read
,
6990 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
6991 .read_done
= nfs4_read_done
,
6992 .write_setup
= nfs4_proc_write_setup
,
6993 .write_pageio_init
= pnfs_pageio_init_write
,
6994 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
6995 .write_done
= nfs4_write_done
,
6996 .commit_setup
= nfs4_proc_commit_setup
,
6997 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
6998 .commit_done
= nfs4_commit_done
,
6999 .lock
= nfs4_proc_lock
,
7000 .clear_acl_cache
= nfs4_zap_acl_attr
,
7001 .close_context
= nfs4_close_context
,
7002 .open_context
= nfs4_atomic_open
,
7003 .have_delegation
= nfs4_have_delegation
,
7004 .return_delegation
= nfs4_inode_return_delegation
,
7005 .alloc_client
= nfs4_alloc_client
,
7006 .init_client
= nfs4_init_client
,
7007 .free_client
= nfs4_free_client
,
7008 .create_server
= nfs4_create_server
,
7009 .clone_server
= nfs_clone_server
,
7012 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7013 .prefix
= XATTR_NAME_NFSV4_ACL
,
7014 .list
= nfs4_xattr_list_nfs4_acl
,
7015 .get
= nfs4_xattr_get_nfs4_acl
,
7016 .set
= nfs4_xattr_set_nfs4_acl
,
7019 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7020 &nfs4_xattr_nfs4_acl_handler
,