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
;
108 dprintk("%s could not handle NFSv4 error %d\n",
116 * This is our standard bitmap for GETATTR requests.
118 const u32 nfs4_fattr_bitmap
[3] = {
120 | FATTR4_WORD0_CHANGE
123 | FATTR4_WORD0_FILEID
,
125 | FATTR4_WORD1_NUMLINKS
127 | FATTR4_WORD1_OWNER_GROUP
128 | FATTR4_WORD1_RAWDEV
129 | FATTR4_WORD1_SPACE_USED
130 | FATTR4_WORD1_TIME_ACCESS
131 | FATTR4_WORD1_TIME_METADATA
132 | FATTR4_WORD1_TIME_MODIFY
135 static const u32 nfs4_pnfs_open_bitmap
[3] = {
137 | FATTR4_WORD0_CHANGE
140 | FATTR4_WORD0_FILEID
,
142 | FATTR4_WORD1_NUMLINKS
144 | FATTR4_WORD1_OWNER_GROUP
145 | FATTR4_WORD1_RAWDEV
146 | FATTR4_WORD1_SPACE_USED
147 | FATTR4_WORD1_TIME_ACCESS
148 | FATTR4_WORD1_TIME_METADATA
149 | FATTR4_WORD1_TIME_MODIFY
,
150 FATTR4_WORD2_MDSTHRESHOLD
153 const u32 nfs4_statfs_bitmap
[2] = {
154 FATTR4_WORD0_FILES_AVAIL
155 | FATTR4_WORD0_FILES_FREE
156 | FATTR4_WORD0_FILES_TOTAL
,
157 FATTR4_WORD1_SPACE_AVAIL
158 | FATTR4_WORD1_SPACE_FREE
159 | FATTR4_WORD1_SPACE_TOTAL
162 const u32 nfs4_pathconf_bitmap
[2] = {
164 | FATTR4_WORD0_MAXNAME
,
168 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
169 | FATTR4_WORD0_MAXREAD
170 | FATTR4_WORD0_MAXWRITE
171 | FATTR4_WORD0_LEASE_TIME
,
172 FATTR4_WORD1_TIME_DELTA
173 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
174 FATTR4_WORD2_LAYOUT_BLKSIZE
177 const u32 nfs4_fs_locations_bitmap
[2] = {
179 | FATTR4_WORD0_CHANGE
182 | FATTR4_WORD0_FILEID
183 | FATTR4_WORD0_FS_LOCATIONS
,
185 | FATTR4_WORD1_NUMLINKS
187 | FATTR4_WORD1_OWNER_GROUP
188 | FATTR4_WORD1_RAWDEV
189 | FATTR4_WORD1_SPACE_USED
190 | FATTR4_WORD1_TIME_ACCESS
191 | FATTR4_WORD1_TIME_METADATA
192 | FATTR4_WORD1_TIME_MODIFY
193 | FATTR4_WORD1_MOUNTED_ON_FILEID
196 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
197 struct nfs4_readdir_arg
*readdir
)
201 BUG_ON(readdir
->count
< 80);
203 readdir
->cookie
= cookie
;
204 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
209 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
214 * NFSv4 servers do not return entries for '.' and '..'
215 * Therefore, we fake these entries here. We let '.'
216 * have cookie 0 and '..' have cookie 1. Note that
217 * when talking to the server, we always send cookie 0
220 start
= p
= kmap_atomic(*readdir
->pages
);
223 *p
++ = xdr_one
; /* next */
224 *p
++ = xdr_zero
; /* cookie, first word */
225 *p
++ = xdr_one
; /* cookie, second word */
226 *p
++ = xdr_one
; /* entry len */
227 memcpy(p
, ".\0\0\0", 4); /* entry */
229 *p
++ = xdr_one
; /* bitmap length */
230 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
231 *p
++ = htonl(8); /* attribute buffer length */
232 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
235 *p
++ = xdr_one
; /* next */
236 *p
++ = xdr_zero
; /* cookie, first word */
237 *p
++ = xdr_two
; /* cookie, second word */
238 *p
++ = xdr_two
; /* entry len */
239 memcpy(p
, "..\0\0", 4); /* entry */
241 *p
++ = xdr_one
; /* bitmap length */
242 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
243 *p
++ = htonl(8); /* attribute buffer length */
244 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
246 readdir
->pgbase
= (char *)p
- (char *)start
;
247 readdir
->count
-= readdir
->pgbase
;
248 kunmap_atomic(start
);
251 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
257 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
258 nfs_wait_bit_killable
, TASK_KILLABLE
);
262 if (clp
->cl_cons_state
< 0)
263 return clp
->cl_cons_state
;
267 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
274 *timeout
= NFS4_POLL_RETRY_MIN
;
275 if (*timeout
> NFS4_POLL_RETRY_MAX
)
276 *timeout
= NFS4_POLL_RETRY_MAX
;
277 freezable_schedule_timeout_killable(*timeout
);
278 if (fatal_signal_pending(current
))
284 /* This is the error handling routine for processes that are allowed
287 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
289 struct nfs_client
*clp
= server
->nfs_client
;
290 struct nfs4_state
*state
= exception
->state
;
291 struct inode
*inode
= exception
->inode
;
294 exception
->retry
= 0;
298 case -NFS4ERR_OPENMODE
:
299 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
300 nfs4_inode_return_delegation(inode
);
301 exception
->retry
= 1;
306 nfs4_schedule_stateid_recovery(server
, state
);
307 goto wait_on_recovery
;
308 case -NFS4ERR_DELEG_REVOKED
:
309 case -NFS4ERR_ADMIN_REVOKED
:
310 case -NFS4ERR_BAD_STATEID
:
313 nfs_remove_bad_delegation(state
->inode
);
314 nfs4_schedule_stateid_recovery(server
, state
);
315 goto wait_on_recovery
;
316 case -NFS4ERR_EXPIRED
:
318 nfs4_schedule_stateid_recovery(server
, state
);
319 case -NFS4ERR_STALE_STATEID
:
320 case -NFS4ERR_STALE_CLIENTID
:
321 nfs4_schedule_lease_recovery(clp
);
322 goto wait_on_recovery
;
323 #if defined(CONFIG_NFS_V4_1)
324 case -NFS4ERR_BADSESSION
:
325 case -NFS4ERR_BADSLOT
:
326 case -NFS4ERR_BAD_HIGH_SLOT
:
327 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
328 case -NFS4ERR_DEADSESSION
:
329 case -NFS4ERR_SEQ_FALSE_RETRY
:
330 case -NFS4ERR_SEQ_MISORDERED
:
331 dprintk("%s ERROR: %d Reset session\n", __func__
,
333 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
334 exception
->retry
= 1;
336 #endif /* defined(CONFIG_NFS_V4_1) */
337 case -NFS4ERR_FILE_OPEN
:
338 if (exception
->timeout
> HZ
) {
339 /* We have retried a decent amount, time to
348 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
351 case -NFS4ERR_RETRY_UNCACHED_REP
:
352 case -NFS4ERR_OLD_STATEID
:
353 exception
->retry
= 1;
355 case -NFS4ERR_BADOWNER
:
356 /* The following works around a Linux server bug! */
357 case -NFS4ERR_BADNAME
:
358 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
359 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
360 exception
->retry
= 1;
361 printk(KERN_WARNING
"NFS: v4 server %s "
362 "does not accept raw "
364 "Reenabling the idmapper.\n",
365 server
->nfs_client
->cl_hostname
);
368 /* We failed to handle the error */
369 return nfs4_map_errors(ret
);
371 ret
= nfs4_wait_clnt_recover(clp
);
373 exception
->retry
= 1;
378 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
380 spin_lock(&clp
->cl_lock
);
381 if (time_before(clp
->cl_last_renewal
,timestamp
))
382 clp
->cl_last_renewal
= timestamp
;
383 spin_unlock(&clp
->cl_lock
);
386 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
388 do_renew_lease(server
->nfs_client
, timestamp
);
391 #if defined(CONFIG_NFS_V4_1)
394 * nfs4_free_slot - free a slot and efficiently update slot table.
396 * freeing a slot is trivially done by clearing its respective bit
398 * If the freed slotid equals highest_used_slotid we want to update it
399 * so that the server would be able to size down the slot table if needed,
400 * otherwise we know that the highest_used_slotid is still in use.
401 * When updating highest_used_slotid there may be "holes" in the bitmap
402 * so we need to scan down from highest_used_slotid to 0 looking for the now
403 * highest slotid in use.
404 * If none found, highest_used_slotid is set to NFS4_NO_SLOT.
406 * Must be called while holding tbl->slot_tbl_lock
409 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u32 slotid
)
411 BUG_ON(slotid
>= NFS4_MAX_SLOT_TABLE
);
412 /* clear used bit in bitmap */
413 __clear_bit(slotid
, tbl
->used_slots
);
415 /* update highest_used_slotid when it is freed */
416 if (slotid
== tbl
->highest_used_slotid
) {
417 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
418 if (slotid
< tbl
->max_slots
)
419 tbl
->highest_used_slotid
= slotid
;
421 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
423 dprintk("%s: slotid %u highest_used_slotid %d\n", __func__
,
424 slotid
, tbl
->highest_used_slotid
);
427 bool nfs4_set_task_privileged(struct rpc_task
*task
, void *dummy
)
429 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
434 * Signal state manager thread if session fore channel is drained
436 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
438 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
439 rpc_wake_up_first(&ses
->fc_slot_table
.slot_tbl_waitq
,
440 nfs4_set_task_privileged
, NULL
);
444 if (ses
->fc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
447 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
448 complete(&ses
->fc_slot_table
.complete
);
452 * Signal state manager thread if session back channel is drained
454 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
456 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
457 ses
->bc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
459 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
460 complete(&ses
->bc_slot_table
.complete
);
463 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
465 struct nfs4_slot_table
*tbl
;
467 tbl
= &res
->sr_session
->fc_slot_table
;
469 /* just wake up the next guy waiting since
470 * we may have not consumed a slot after all */
471 dprintk("%s: No slot\n", __func__
);
475 spin_lock(&tbl
->slot_tbl_lock
);
476 nfs4_free_slot(tbl
, res
->sr_slot
- tbl
->slots
);
477 nfs4_check_drain_fc_complete(res
->sr_session
);
478 spin_unlock(&tbl
->slot_tbl_lock
);
482 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
484 unsigned long timestamp
;
485 struct nfs_client
*clp
;
488 * sr_status remains 1 if an RPC level error occurred. The server
489 * may or may not have processed the sequence operation..
490 * Proceed as if the server received and processed the sequence
493 if (res
->sr_status
== 1)
494 res
->sr_status
= NFS_OK
;
496 /* don't increment the sequence number if the task wasn't sent */
497 if (!RPC_WAS_SENT(task
))
500 /* Check the SEQUENCE operation status */
501 switch (res
->sr_status
) {
503 /* Update the slot's sequence and clientid lease timer */
504 ++res
->sr_slot
->seq_nr
;
505 timestamp
= res
->sr_renewal_time
;
506 clp
= res
->sr_session
->clp
;
507 do_renew_lease(clp
, timestamp
);
508 /* Check sequence flags */
509 if (res
->sr_status_flags
!= 0)
510 nfs4_schedule_lease_recovery(clp
);
513 /* The server detected a resend of the RPC call and
514 * returned NFS4ERR_DELAY as per Section 2.10.6.2
517 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
519 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
520 res
->sr_slot
->seq_nr
);
523 /* Just update the slot sequence no. */
524 ++res
->sr_slot
->seq_nr
;
527 /* The session may be reset by one of the error handlers. */
528 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
529 nfs41_sequence_free_slot(res
);
532 if (!rpc_restart_call(task
))
534 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
538 static int nfs4_sequence_done(struct rpc_task
*task
,
539 struct nfs4_sequence_res
*res
)
541 if (res
->sr_session
== NULL
)
543 return nfs41_sequence_done(task
, res
);
547 * nfs4_find_slot - efficiently look for a free slot
549 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
550 * If found, we mark the slot as used, update the highest_used_slotid,
551 * and respectively set up the sequence operation args.
552 * The slot number is returned if found, or NFS4_NO_SLOT otherwise.
554 * Note: must be called with under the slot_tbl_lock.
557 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
560 u32 ret_id
= NFS4_NO_SLOT
;
562 dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n",
563 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
565 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
566 if (slotid
>= tbl
->max_slots
)
568 __set_bit(slotid
, tbl
->used_slots
);
569 if (slotid
> tbl
->highest_used_slotid
||
570 tbl
->highest_used_slotid
== NFS4_NO_SLOT
)
571 tbl
->highest_used_slotid
= slotid
;
574 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
575 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
579 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
580 struct nfs4_sequence_res
*res
, int cache_reply
)
582 args
->sa_session
= NULL
;
583 args
->sa_cache_this
= 0;
585 args
->sa_cache_this
= 1;
586 res
->sr_session
= NULL
;
590 int nfs41_setup_sequence(struct nfs4_session
*session
,
591 struct nfs4_sequence_args
*args
,
592 struct nfs4_sequence_res
*res
,
593 struct rpc_task
*task
)
595 struct nfs4_slot
*slot
;
596 struct nfs4_slot_table
*tbl
;
599 dprintk("--> %s\n", __func__
);
600 /* slot already allocated? */
601 if (res
->sr_slot
!= NULL
)
604 tbl
= &session
->fc_slot_table
;
606 spin_lock(&tbl
->slot_tbl_lock
);
607 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
608 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
609 /* The state manager will wait until the slot table is empty */
610 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
611 spin_unlock(&tbl
->slot_tbl_lock
);
612 dprintk("%s session is draining\n", __func__
);
616 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
617 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
618 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
619 spin_unlock(&tbl
->slot_tbl_lock
);
620 dprintk("%s enforce FIFO order\n", __func__
);
624 slotid
= nfs4_find_slot(tbl
);
625 if (slotid
== NFS4_NO_SLOT
) {
626 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
627 spin_unlock(&tbl
->slot_tbl_lock
);
628 dprintk("<-- %s: no free slots\n", __func__
);
631 spin_unlock(&tbl
->slot_tbl_lock
);
633 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
634 slot
= tbl
->slots
+ slotid
;
635 args
->sa_session
= session
;
636 args
->sa_slotid
= slotid
;
638 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
640 res
->sr_session
= session
;
642 res
->sr_renewal_time
= jiffies
;
643 res
->sr_status_flags
= 0;
645 * sr_status is only set in decode_sequence, and so will remain
646 * set to 1 if an rpc level failure occurs.
651 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
653 int nfs4_setup_sequence(const struct nfs_server
*server
,
654 struct nfs4_sequence_args
*args
,
655 struct nfs4_sequence_res
*res
,
656 struct rpc_task
*task
)
658 struct nfs4_session
*session
= nfs4_get_session(server
);
664 dprintk("--> %s clp %p session %p sr_slot %td\n",
665 __func__
, session
->clp
, session
, res
->sr_slot
?
666 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
668 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
670 dprintk("<-- %s status=%d\n", __func__
, ret
);
674 struct nfs41_call_sync_data
{
675 const struct nfs_server
*seq_server
;
676 struct nfs4_sequence_args
*seq_args
;
677 struct nfs4_sequence_res
*seq_res
;
680 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
682 struct nfs41_call_sync_data
*data
= calldata
;
684 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
686 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
687 data
->seq_res
, task
))
689 rpc_call_start(task
);
692 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
694 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
695 nfs41_call_sync_prepare(task
, calldata
);
698 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
700 struct nfs41_call_sync_data
*data
= calldata
;
702 nfs41_sequence_done(task
, data
->seq_res
);
705 static const struct rpc_call_ops nfs41_call_sync_ops
= {
706 .rpc_call_prepare
= nfs41_call_sync_prepare
,
707 .rpc_call_done
= nfs41_call_sync_done
,
710 static const struct rpc_call_ops nfs41_call_priv_sync_ops
= {
711 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
712 .rpc_call_done
= nfs41_call_sync_done
,
715 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
716 struct nfs_server
*server
,
717 struct rpc_message
*msg
,
718 struct nfs4_sequence_args
*args
,
719 struct nfs4_sequence_res
*res
,
723 struct rpc_task
*task
;
724 struct nfs41_call_sync_data data
= {
725 .seq_server
= server
,
729 struct rpc_task_setup task_setup
= {
732 .callback_ops
= &nfs41_call_sync_ops
,
733 .callback_data
= &data
737 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
738 task
= rpc_run_task(&task_setup
);
742 ret
= task
->tk_status
;
748 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
749 struct nfs_server
*server
,
750 struct rpc_message
*msg
,
751 struct nfs4_sequence_args
*args
,
752 struct nfs4_sequence_res
*res
,
755 nfs41_init_sequence(args
, res
, cache_reply
);
756 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, 0);
761 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
762 struct nfs4_sequence_res
*res
, int cache_reply
)
766 static int nfs4_sequence_done(struct rpc_task
*task
,
767 struct nfs4_sequence_res
*res
)
771 #endif /* CONFIG_NFS_V4_1 */
773 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
774 struct nfs_server
*server
,
775 struct rpc_message
*msg
,
776 struct nfs4_sequence_args
*args
,
777 struct nfs4_sequence_res
*res
,
780 nfs41_init_sequence(args
, res
, cache_reply
);
781 return rpc_call_sync(clnt
, msg
, 0);
785 int nfs4_call_sync(struct rpc_clnt
*clnt
,
786 struct nfs_server
*server
,
787 struct rpc_message
*msg
,
788 struct nfs4_sequence_args
*args
,
789 struct nfs4_sequence_res
*res
,
792 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
793 args
, res
, cache_reply
);
796 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
798 struct nfs_inode
*nfsi
= NFS_I(dir
);
800 spin_lock(&dir
->i_lock
);
801 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
802 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
803 nfs_force_lookup_revalidate(dir
);
804 dir
->i_version
= cinfo
->after
;
805 spin_unlock(&dir
->i_lock
);
808 struct nfs4_opendata
{
810 struct nfs_openargs o_arg
;
811 struct nfs_openres o_res
;
812 struct nfs_open_confirmargs c_arg
;
813 struct nfs_open_confirmres c_res
;
814 struct nfs4_string owner_name
;
815 struct nfs4_string group_name
;
816 struct nfs_fattr f_attr
;
818 struct dentry
*dentry
;
819 struct nfs4_state_owner
*owner
;
820 struct nfs4_state
*state
;
822 unsigned long timestamp
;
823 unsigned int rpc_done
: 1;
829 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
831 p
->o_res
.f_attr
= &p
->f_attr
;
832 p
->o_res
.seqid
= p
->o_arg
.seqid
;
833 p
->c_res
.seqid
= p
->c_arg
.seqid
;
834 p
->o_res
.server
= p
->o_arg
.server
;
835 nfs_fattr_init(&p
->f_attr
);
836 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
839 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
840 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
841 const struct iattr
*attrs
,
844 struct dentry
*parent
= dget_parent(dentry
);
845 struct inode
*dir
= parent
->d_inode
;
846 struct nfs_server
*server
= NFS_SERVER(dir
);
847 struct nfs4_opendata
*p
;
849 p
= kzalloc(sizeof(*p
), gfp_mask
);
852 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
853 if (p
->o_arg
.seqid
== NULL
)
855 nfs_sb_active(dentry
->d_sb
);
856 p
->dentry
= dget(dentry
);
859 atomic_inc(&sp
->so_count
);
860 p
->o_arg
.fh
= NFS_FH(dir
);
861 p
->o_arg
.open_flags
= flags
;
862 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
863 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
864 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
865 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
866 p
->o_arg
.name
= &dentry
->d_name
;
867 p
->o_arg
.server
= server
;
868 p
->o_arg
.bitmask
= server
->attr_bitmask
;
869 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
870 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
871 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
874 p
->o_arg
.u
.attrs
= &p
->attrs
;
875 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
878 verf
[1] = current
->pid
;
879 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
880 sizeof(p
->o_arg
.u
.verifier
.data
));
882 p
->c_arg
.fh
= &p
->o_res
.fh
;
883 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
884 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
885 nfs4_init_opendata_res(p
);
895 static void nfs4_opendata_free(struct kref
*kref
)
897 struct nfs4_opendata
*p
= container_of(kref
,
898 struct nfs4_opendata
, kref
);
899 struct super_block
*sb
= p
->dentry
->d_sb
;
901 nfs_free_seqid(p
->o_arg
.seqid
);
902 if (p
->state
!= NULL
)
903 nfs4_put_open_state(p
->state
);
904 nfs4_put_state_owner(p
->owner
);
908 nfs_fattr_free_names(&p
->f_attr
);
912 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
915 kref_put(&p
->kref
, nfs4_opendata_free
);
918 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
922 ret
= rpc_wait_for_completion_task(task
);
926 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
930 if (open_mode
& (O_EXCL
|O_TRUNC
))
932 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
934 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
935 && state
->n_rdonly
!= 0;
938 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
939 && state
->n_wronly
!= 0;
941 case FMODE_READ
|FMODE_WRITE
:
942 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
943 && state
->n_rdwr
!= 0;
949 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
951 if (delegation
== NULL
)
953 if ((delegation
->type
& fmode
) != fmode
)
955 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
957 nfs_mark_delegation_referenced(delegation
);
961 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
970 case FMODE_READ
|FMODE_WRITE
:
973 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
976 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
978 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
979 nfs4_stateid_copy(&state
->stateid
, stateid
);
980 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
983 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
986 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
988 case FMODE_READ
|FMODE_WRITE
:
989 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
993 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
995 write_seqlock(&state
->seqlock
);
996 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
997 write_sequnlock(&state
->seqlock
);
1000 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1003 * Protect the call to nfs4_state_set_mode_locked and
1004 * serialise the stateid update
1006 write_seqlock(&state
->seqlock
);
1007 if (deleg_stateid
!= NULL
) {
1008 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1009 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1011 if (open_stateid
!= NULL
)
1012 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1013 write_sequnlock(&state
->seqlock
);
1014 spin_lock(&state
->owner
->so_lock
);
1015 update_open_stateflags(state
, fmode
);
1016 spin_unlock(&state
->owner
->so_lock
);
1019 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1021 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1022 struct nfs_delegation
*deleg_cur
;
1025 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1028 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1029 if (deleg_cur
== NULL
)
1032 spin_lock(&deleg_cur
->lock
);
1033 if (nfsi
->delegation
!= deleg_cur
||
1034 (deleg_cur
->type
& fmode
) != fmode
)
1035 goto no_delegation_unlock
;
1037 if (delegation
== NULL
)
1038 delegation
= &deleg_cur
->stateid
;
1039 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1040 goto no_delegation_unlock
;
1042 nfs_mark_delegation_referenced(deleg_cur
);
1043 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1045 no_delegation_unlock
:
1046 spin_unlock(&deleg_cur
->lock
);
1050 if (!ret
&& open_stateid
!= NULL
) {
1051 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1059 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1061 struct nfs_delegation
*delegation
;
1064 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1065 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1070 nfs4_inode_return_delegation(inode
);
1073 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1075 struct nfs4_state
*state
= opendata
->state
;
1076 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1077 struct nfs_delegation
*delegation
;
1078 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1079 fmode_t fmode
= opendata
->o_arg
.fmode
;
1080 nfs4_stateid stateid
;
1084 if (can_open_cached(state
, fmode
, open_mode
)) {
1085 spin_lock(&state
->owner
->so_lock
);
1086 if (can_open_cached(state
, fmode
, open_mode
)) {
1087 update_open_stateflags(state
, fmode
);
1088 spin_unlock(&state
->owner
->so_lock
);
1089 goto out_return_state
;
1091 spin_unlock(&state
->owner
->so_lock
);
1094 delegation
= rcu_dereference(nfsi
->delegation
);
1095 if (!can_open_delegated(delegation
, fmode
)) {
1099 /* Save the delegation */
1100 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1102 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1107 /* Try to update the stateid using the delegation */
1108 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1109 goto out_return_state
;
1112 return ERR_PTR(ret
);
1114 atomic_inc(&state
->count
);
1118 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1120 struct inode
*inode
;
1121 struct nfs4_state
*state
= NULL
;
1122 struct nfs_delegation
*delegation
;
1125 if (!data
->rpc_done
) {
1126 state
= nfs4_try_open_cached(data
);
1131 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1133 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1134 ret
= PTR_ERR(inode
);
1138 state
= nfs4_get_open_state(inode
, data
->owner
);
1141 if (data
->o_res
.delegation_type
!= 0) {
1142 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
1143 int delegation_flags
= 0;
1146 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1148 delegation_flags
= delegation
->flags
;
1150 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1151 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1152 "returning a delegation for "
1153 "OPEN(CLAIM_DELEGATE_CUR)\n",
1155 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1156 nfs_inode_set_delegation(state
->inode
,
1157 data
->owner
->so_cred
,
1160 nfs_inode_reclaim_delegation(state
->inode
,
1161 data
->owner
->so_cred
,
1165 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1173 return ERR_PTR(ret
);
1176 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1178 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1179 struct nfs_open_context
*ctx
;
1181 spin_lock(&state
->inode
->i_lock
);
1182 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1183 if (ctx
->state
!= state
)
1185 get_nfs_open_context(ctx
);
1186 spin_unlock(&state
->inode
->i_lock
);
1189 spin_unlock(&state
->inode
->i_lock
);
1190 return ERR_PTR(-ENOENT
);
1193 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1195 struct nfs4_opendata
*opendata
;
1197 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1198 if (opendata
== NULL
)
1199 return ERR_PTR(-ENOMEM
);
1200 opendata
->state
= state
;
1201 atomic_inc(&state
->count
);
1205 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1207 struct nfs4_state
*newstate
;
1210 opendata
->o_arg
.open_flags
= 0;
1211 opendata
->o_arg
.fmode
= fmode
;
1212 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1213 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1214 nfs4_init_opendata_res(opendata
);
1215 ret
= _nfs4_recover_proc_open(opendata
);
1218 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1219 if (IS_ERR(newstate
))
1220 return PTR_ERR(newstate
);
1221 nfs4_close_state(newstate
, fmode
);
1226 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1228 struct nfs4_state
*newstate
;
1231 /* memory barrier prior to reading state->n_* */
1232 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1234 if (state
->n_rdwr
!= 0) {
1235 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1236 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1239 if (newstate
!= state
)
1242 if (state
->n_wronly
!= 0) {
1243 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1244 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1247 if (newstate
!= state
)
1250 if (state
->n_rdonly
!= 0) {
1251 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1252 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1255 if (newstate
!= state
)
1259 * We may have performed cached opens for all three recoveries.
1260 * Check if we need to update the current stateid.
1262 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1263 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1264 write_seqlock(&state
->seqlock
);
1265 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1266 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1267 write_sequnlock(&state
->seqlock
);
1274 * reclaim state on the server after a reboot.
1276 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1278 struct nfs_delegation
*delegation
;
1279 struct nfs4_opendata
*opendata
;
1280 fmode_t delegation_type
= 0;
1283 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1284 if (IS_ERR(opendata
))
1285 return PTR_ERR(opendata
);
1286 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1287 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1289 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1290 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1291 delegation_type
= delegation
->type
;
1293 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1294 status
= nfs4_open_recover(opendata
, state
);
1295 nfs4_opendata_put(opendata
);
1299 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1301 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1302 struct nfs4_exception exception
= { };
1305 err
= _nfs4_do_open_reclaim(ctx
, state
);
1306 if (err
!= -NFS4ERR_DELAY
)
1308 nfs4_handle_exception(server
, err
, &exception
);
1309 } while (exception
.retry
);
1313 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1315 struct nfs_open_context
*ctx
;
1318 ctx
= nfs4_state_find_open_context(state
);
1320 return PTR_ERR(ctx
);
1321 ret
= nfs4_do_open_reclaim(ctx
, state
);
1322 put_nfs_open_context(ctx
);
1326 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1328 struct nfs4_opendata
*opendata
;
1331 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1332 if (IS_ERR(opendata
))
1333 return PTR_ERR(opendata
);
1334 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1335 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1336 ret
= nfs4_open_recover(opendata
, state
);
1337 nfs4_opendata_put(opendata
);
1341 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1343 struct nfs4_exception exception
= { };
1344 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1347 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1353 case -NFS4ERR_BADSESSION
:
1354 case -NFS4ERR_BADSLOT
:
1355 case -NFS4ERR_BAD_HIGH_SLOT
:
1356 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1357 case -NFS4ERR_DEADSESSION
:
1358 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1360 case -NFS4ERR_STALE_CLIENTID
:
1361 case -NFS4ERR_STALE_STATEID
:
1362 case -NFS4ERR_EXPIRED
:
1363 /* Don't recall a delegation if it was lost */
1364 nfs4_schedule_lease_recovery(server
->nfs_client
);
1368 * The show must go on: exit, but mark the
1369 * stateid as needing recovery.
1371 case -NFS4ERR_DELEG_REVOKED
:
1372 case -NFS4ERR_ADMIN_REVOKED
:
1373 case -NFS4ERR_BAD_STATEID
:
1374 nfs_inode_find_state_and_recover(state
->inode
,
1376 nfs4_schedule_stateid_recovery(server
, state
);
1379 * User RPCSEC_GSS context has expired.
1380 * We cannot recover this stateid now, so
1381 * skip it and allow recovery thread to
1388 err
= nfs4_handle_exception(server
, err
, &exception
);
1389 } while (exception
.retry
);
1394 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1396 struct nfs4_opendata
*data
= calldata
;
1398 data
->rpc_status
= task
->tk_status
;
1399 if (data
->rpc_status
== 0) {
1400 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1401 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1402 renew_lease(data
->o_res
.server
, data
->timestamp
);
1407 static void nfs4_open_confirm_release(void *calldata
)
1409 struct nfs4_opendata
*data
= calldata
;
1410 struct nfs4_state
*state
= NULL
;
1412 /* If this request hasn't been cancelled, do nothing */
1413 if (data
->cancelled
== 0)
1415 /* In case of error, no cleanup! */
1416 if (!data
->rpc_done
)
1418 state
= nfs4_opendata_to_nfs4_state(data
);
1420 nfs4_close_state(state
, data
->o_arg
.fmode
);
1422 nfs4_opendata_put(data
);
1425 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1426 .rpc_call_done
= nfs4_open_confirm_done
,
1427 .rpc_release
= nfs4_open_confirm_release
,
1431 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1433 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1435 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1436 struct rpc_task
*task
;
1437 struct rpc_message msg
= {
1438 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1439 .rpc_argp
= &data
->c_arg
,
1440 .rpc_resp
= &data
->c_res
,
1441 .rpc_cred
= data
->owner
->so_cred
,
1443 struct rpc_task_setup task_setup_data
= {
1444 .rpc_client
= server
->client
,
1445 .rpc_message
= &msg
,
1446 .callback_ops
= &nfs4_open_confirm_ops
,
1447 .callback_data
= data
,
1448 .workqueue
= nfsiod_workqueue
,
1449 .flags
= RPC_TASK_ASYNC
,
1453 kref_get(&data
->kref
);
1455 data
->rpc_status
= 0;
1456 data
->timestamp
= jiffies
;
1457 task
= rpc_run_task(&task_setup_data
);
1459 return PTR_ERR(task
);
1460 status
= nfs4_wait_for_completion_rpc_task(task
);
1462 data
->cancelled
= 1;
1465 status
= data
->rpc_status
;
1470 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1472 struct nfs4_opendata
*data
= calldata
;
1473 struct nfs4_state_owner
*sp
= data
->owner
;
1475 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1478 * Check if we still need to send an OPEN call, or if we can use
1479 * a delegation instead.
1481 if (data
->state
!= NULL
) {
1482 struct nfs_delegation
*delegation
;
1484 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1487 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1488 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1489 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1490 goto unlock_no_action
;
1493 /* Update client id. */
1494 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1495 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1496 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1497 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1499 data
->timestamp
= jiffies
;
1500 if (nfs4_setup_sequence(data
->o_arg
.server
,
1501 &data
->o_arg
.seq_args
,
1502 &data
->o_res
.seq_res
, task
))
1504 rpc_call_start(task
);
1509 task
->tk_action
= NULL
;
1513 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1515 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1516 nfs4_open_prepare(task
, calldata
);
1519 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1521 struct nfs4_opendata
*data
= calldata
;
1523 data
->rpc_status
= task
->tk_status
;
1525 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1528 if (task
->tk_status
== 0) {
1529 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1533 data
->rpc_status
= -ELOOP
;
1536 data
->rpc_status
= -EISDIR
;
1539 data
->rpc_status
= -ENOTDIR
;
1541 renew_lease(data
->o_res
.server
, data
->timestamp
);
1542 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1543 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1548 static void nfs4_open_release(void *calldata
)
1550 struct nfs4_opendata
*data
= calldata
;
1551 struct nfs4_state
*state
= NULL
;
1553 /* If this request hasn't been cancelled, do nothing */
1554 if (data
->cancelled
== 0)
1556 /* In case of error, no cleanup! */
1557 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1559 /* In case we need an open_confirm, no cleanup! */
1560 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1562 state
= nfs4_opendata_to_nfs4_state(data
);
1564 nfs4_close_state(state
, data
->o_arg
.fmode
);
1566 nfs4_opendata_put(data
);
1569 static const struct rpc_call_ops nfs4_open_ops
= {
1570 .rpc_call_prepare
= nfs4_open_prepare
,
1571 .rpc_call_done
= nfs4_open_done
,
1572 .rpc_release
= nfs4_open_release
,
1575 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1576 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1577 .rpc_call_done
= nfs4_open_done
,
1578 .rpc_release
= nfs4_open_release
,
1581 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1583 struct inode
*dir
= data
->dir
->d_inode
;
1584 struct nfs_server
*server
= NFS_SERVER(dir
);
1585 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1586 struct nfs_openres
*o_res
= &data
->o_res
;
1587 struct rpc_task
*task
;
1588 struct rpc_message msg
= {
1589 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1592 .rpc_cred
= data
->owner
->so_cred
,
1594 struct rpc_task_setup task_setup_data
= {
1595 .rpc_client
= server
->client
,
1596 .rpc_message
= &msg
,
1597 .callback_ops
= &nfs4_open_ops
,
1598 .callback_data
= data
,
1599 .workqueue
= nfsiod_workqueue
,
1600 .flags
= RPC_TASK_ASYNC
,
1604 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1605 kref_get(&data
->kref
);
1607 data
->rpc_status
= 0;
1608 data
->cancelled
= 0;
1610 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1611 task
= rpc_run_task(&task_setup_data
);
1613 return PTR_ERR(task
);
1614 status
= nfs4_wait_for_completion_rpc_task(task
);
1616 data
->cancelled
= 1;
1619 status
= data
->rpc_status
;
1625 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1627 struct inode
*dir
= data
->dir
->d_inode
;
1628 struct nfs_openres
*o_res
= &data
->o_res
;
1631 status
= nfs4_run_open_task(data
, 1);
1632 if (status
!= 0 || !data
->rpc_done
)
1635 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1637 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1638 status
= _nfs4_proc_open_confirm(data
);
1647 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1649 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1651 struct inode
*dir
= data
->dir
->d_inode
;
1652 struct nfs_server
*server
= NFS_SERVER(dir
);
1653 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1654 struct nfs_openres
*o_res
= &data
->o_res
;
1657 status
= nfs4_run_open_task(data
, 0);
1658 if (!data
->rpc_done
)
1661 if (status
== -NFS4ERR_BADNAME
&&
1662 !(o_arg
->open_flags
& O_CREAT
))
1667 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1669 if (o_arg
->open_flags
& O_CREAT
)
1670 update_changeattr(dir
, &o_res
->cinfo
);
1671 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1672 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1673 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1674 status
= _nfs4_proc_open_confirm(data
);
1678 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1679 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1683 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1688 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1689 ret
= nfs4_wait_clnt_recover(clp
);
1692 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1693 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1695 nfs4_schedule_state_manager(clp
);
1701 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1703 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1708 * reclaim state on the server after a network partition.
1709 * Assumes caller holds the appropriate lock
1711 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1713 struct nfs4_opendata
*opendata
;
1716 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1717 if (IS_ERR(opendata
))
1718 return PTR_ERR(opendata
);
1719 ret
= nfs4_open_recover(opendata
, state
);
1721 d_drop(ctx
->dentry
);
1722 nfs4_opendata_put(opendata
);
1726 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1728 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1729 struct nfs4_exception exception
= { };
1733 err
= _nfs4_open_expired(ctx
, state
);
1737 case -NFS4ERR_GRACE
:
1738 case -NFS4ERR_DELAY
:
1739 nfs4_handle_exception(server
, err
, &exception
);
1742 } while (exception
.retry
);
1747 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1749 struct nfs_open_context
*ctx
;
1752 ctx
= nfs4_state_find_open_context(state
);
1754 return PTR_ERR(ctx
);
1755 ret
= nfs4_do_open_expired(ctx
, state
);
1756 put_nfs_open_context(ctx
);
1760 #if defined(CONFIG_NFS_V4_1)
1761 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1763 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1764 nfs4_stateid
*stateid
= &state
->stateid
;
1767 /* If a state reset has been done, test_stateid is unneeded */
1768 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1771 status
= nfs41_test_stateid(server
, stateid
);
1772 if (status
!= NFS_OK
) {
1773 /* Free the stateid unless the server explicitly
1774 * informs us the stateid is unrecognized. */
1775 if (status
!= -NFS4ERR_BAD_STATEID
)
1776 nfs41_free_stateid(server
, stateid
);
1778 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1783 * nfs41_check_open_stateid - possibly free an open stateid
1785 * @state: NFSv4 state for an inode
1787 * Returns NFS_OK if recovery for this stateid is now finished.
1788 * Otherwise a negative NFS4ERR value is returned.
1790 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1792 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1793 nfs4_stateid
*stateid
= &state
->stateid
;
1796 /* If a state reset has been done, test_stateid is unneeded */
1797 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1798 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1799 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1800 return -NFS4ERR_BAD_STATEID
;
1802 status
= nfs41_test_stateid(server
, stateid
);
1803 if (status
!= NFS_OK
) {
1804 /* Free the stateid unless the server explicitly
1805 * informs us the stateid is unrecognized. */
1806 if (status
!= -NFS4ERR_BAD_STATEID
)
1807 nfs41_free_stateid(server
, stateid
);
1809 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1810 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1811 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1816 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1820 nfs41_clear_delegation_stateid(state
);
1821 status
= nfs41_check_open_stateid(state
);
1822 if (status
!= NFS_OK
)
1823 status
= nfs4_open_expired(sp
, state
);
1829 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1830 * fields corresponding to attributes that were used to store the verifier.
1831 * Make sure we clobber those fields in the later setattr call
1833 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1835 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1836 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1837 sattr
->ia_valid
|= ATTR_ATIME
;
1839 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1840 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1841 sattr
->ia_valid
|= ATTR_MTIME
;
1845 * Returns a referenced nfs4_state
1847 static int _nfs4_do_open(struct inode
*dir
,
1848 struct dentry
*dentry
,
1851 struct iattr
*sattr
,
1852 struct rpc_cred
*cred
,
1853 struct nfs4_state
**res
,
1854 struct nfs4_threshold
**ctx_th
)
1856 struct nfs4_state_owner
*sp
;
1857 struct nfs4_state
*state
= NULL
;
1858 struct nfs_server
*server
= NFS_SERVER(dir
);
1859 struct nfs4_opendata
*opendata
;
1862 /* Protect against reboot recovery conflicts */
1864 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1866 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1869 status
= nfs4_recover_expired_lease(server
);
1871 goto err_put_state_owner
;
1872 if (dentry
->d_inode
!= NULL
)
1873 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1875 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1876 if (opendata
== NULL
)
1877 goto err_put_state_owner
;
1879 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
1880 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
1881 if (!opendata
->f_attr
.mdsthreshold
)
1882 goto err_opendata_put
;
1883 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
1885 if (dentry
->d_inode
!= NULL
)
1886 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1888 status
= _nfs4_proc_open(opendata
);
1890 goto err_opendata_put
;
1892 state
= nfs4_opendata_to_nfs4_state(opendata
);
1893 status
= PTR_ERR(state
);
1895 goto err_opendata_put
;
1896 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1897 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1899 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1900 nfs4_exclusive_attrset(opendata
, sattr
);
1902 nfs_fattr_init(opendata
->o_res
.f_attr
);
1903 status
= nfs4_do_setattr(state
->inode
, cred
,
1904 opendata
->o_res
.f_attr
, sattr
,
1907 nfs_setattr_update_inode(state
->inode
, sattr
);
1908 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1911 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
1912 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
1914 kfree(opendata
->f_attr
.mdsthreshold
);
1915 opendata
->f_attr
.mdsthreshold
= NULL
;
1917 nfs4_opendata_put(opendata
);
1918 nfs4_put_state_owner(sp
);
1922 kfree(opendata
->f_attr
.mdsthreshold
);
1923 nfs4_opendata_put(opendata
);
1924 err_put_state_owner
:
1925 nfs4_put_state_owner(sp
);
1932 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
1933 struct dentry
*dentry
,
1936 struct iattr
*sattr
,
1937 struct rpc_cred
*cred
,
1938 struct nfs4_threshold
**ctx_th
)
1940 struct nfs4_exception exception
= { };
1941 struct nfs4_state
*res
;
1944 fmode
&= FMODE_READ
|FMODE_WRITE
;
1946 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
1950 /* NOTE: BAD_SEQID means the server and client disagree about the
1951 * book-keeping w.r.t. state-changing operations
1952 * (OPEN/CLOSE/LOCK/LOCKU...)
1953 * It is actually a sign of a bug on the client or on the server.
1955 * If we receive a BAD_SEQID error in the particular case of
1956 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1957 * have unhashed the old state_owner for us, and that we can
1958 * therefore safely retry using a new one. We should still warn
1959 * the user though...
1961 if (status
== -NFS4ERR_BAD_SEQID
) {
1962 pr_warn_ratelimited("NFS: v4 server %s "
1963 " returned a bad sequence-id error!\n",
1964 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1965 exception
.retry
= 1;
1969 * BAD_STATEID on OPEN means that the server cancelled our
1970 * state before it received the OPEN_CONFIRM.
1971 * Recover by retrying the request as per the discussion
1972 * on Page 181 of RFC3530.
1974 if (status
== -NFS4ERR_BAD_STATEID
) {
1975 exception
.retry
= 1;
1978 if (status
== -EAGAIN
) {
1979 /* We must have found a delegation */
1980 exception
.retry
= 1;
1983 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1984 status
, &exception
));
1985 } while (exception
.retry
);
1989 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1990 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1991 struct nfs4_state
*state
)
1993 struct nfs_server
*server
= NFS_SERVER(inode
);
1994 struct nfs_setattrargs arg
= {
1995 .fh
= NFS_FH(inode
),
1998 .bitmask
= server
->attr_bitmask
,
2000 struct nfs_setattrres res
= {
2004 struct rpc_message msg
= {
2005 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2010 unsigned long timestamp
= jiffies
;
2013 nfs_fattr_init(fattr
);
2015 if (state
!= NULL
) {
2016 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2017 current
->files
, current
->tgid
);
2018 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
2020 /* Use that stateid */
2022 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2024 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2025 if (status
== 0 && state
!= NULL
)
2026 renew_lease(server
, timestamp
);
2030 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2031 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2032 struct nfs4_state
*state
)
2034 struct nfs_server
*server
= NFS_SERVER(inode
);
2035 struct nfs4_exception exception
= {
2041 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2043 case -NFS4ERR_OPENMODE
:
2044 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2046 if (sattr
->ia_valid
& ATTR_OPEN
)
2051 err
= nfs4_handle_exception(server
, err
, &exception
);
2052 } while (exception
.retry
);
2057 struct nfs4_closedata
{
2058 struct inode
*inode
;
2059 struct nfs4_state
*state
;
2060 struct nfs_closeargs arg
;
2061 struct nfs_closeres res
;
2062 struct nfs_fattr fattr
;
2063 unsigned long timestamp
;
2068 static void nfs4_free_closedata(void *data
)
2070 struct nfs4_closedata
*calldata
= data
;
2071 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2072 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2075 pnfs_roc_release(calldata
->state
->inode
);
2076 nfs4_put_open_state(calldata
->state
);
2077 nfs_free_seqid(calldata
->arg
.seqid
);
2078 nfs4_put_state_owner(sp
);
2079 nfs_sb_deactive(sb
);
2083 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2086 spin_lock(&state
->owner
->so_lock
);
2087 if (!(fmode
& FMODE_READ
))
2088 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2089 if (!(fmode
& FMODE_WRITE
))
2090 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2091 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2092 spin_unlock(&state
->owner
->so_lock
);
2095 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2097 struct nfs4_closedata
*calldata
= data
;
2098 struct nfs4_state
*state
= calldata
->state
;
2099 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2101 dprintk("%s: begin!\n", __func__
);
2102 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2104 /* hmm. we are done with the inode, and in the process of freeing
2105 * the state_owner. we keep this around to process errors
2107 switch (task
->tk_status
) {
2110 pnfs_roc_set_barrier(state
->inode
,
2111 calldata
->roc_barrier
);
2112 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2113 renew_lease(server
, calldata
->timestamp
);
2114 nfs4_close_clear_stateid_flags(state
,
2115 calldata
->arg
.fmode
);
2117 case -NFS4ERR_STALE_STATEID
:
2118 case -NFS4ERR_OLD_STATEID
:
2119 case -NFS4ERR_BAD_STATEID
:
2120 case -NFS4ERR_EXPIRED
:
2121 if (calldata
->arg
.fmode
== 0)
2124 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2125 rpc_restart_call_prepare(task
);
2127 nfs_release_seqid(calldata
->arg
.seqid
);
2128 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2129 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2132 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2134 struct nfs4_closedata
*calldata
= data
;
2135 struct nfs4_state
*state
= calldata
->state
;
2138 dprintk("%s: begin!\n", __func__
);
2139 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2142 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2143 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2144 spin_lock(&state
->owner
->so_lock
);
2145 /* Calculate the change in open mode */
2146 if (state
->n_rdwr
== 0) {
2147 if (state
->n_rdonly
== 0) {
2148 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2149 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2150 calldata
->arg
.fmode
&= ~FMODE_READ
;
2152 if (state
->n_wronly
== 0) {
2153 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2154 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2155 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2158 spin_unlock(&state
->owner
->so_lock
);
2161 /* Note: exit _without_ calling nfs4_close_done */
2162 task
->tk_action
= NULL
;
2166 if (calldata
->arg
.fmode
== 0) {
2167 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2168 if (calldata
->roc
&&
2169 pnfs_roc_drain(calldata
->inode
, &calldata
->roc_barrier
)) {
2170 rpc_sleep_on(&NFS_SERVER(calldata
->inode
)->roc_rpcwaitq
,
2176 nfs_fattr_init(calldata
->res
.fattr
);
2177 calldata
->timestamp
= jiffies
;
2178 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
2179 &calldata
->arg
.seq_args
,
2180 &calldata
->res
.seq_res
,
2183 rpc_call_start(task
);
2185 dprintk("%s: done!\n", __func__
);
2188 static const struct rpc_call_ops nfs4_close_ops
= {
2189 .rpc_call_prepare
= nfs4_close_prepare
,
2190 .rpc_call_done
= nfs4_close_done
,
2191 .rpc_release
= nfs4_free_closedata
,
2195 * It is possible for data to be read/written from a mem-mapped file
2196 * after the sys_close call (which hits the vfs layer as a flush).
2197 * This means that we can't safely call nfsv4 close on a file until
2198 * the inode is cleared. This in turn means that we are not good
2199 * NFSv4 citizens - we do not indicate to the server to update the file's
2200 * share state even when we are done with one of the three share
2201 * stateid's in the inode.
2203 * NOTE: Caller must be holding the sp->so_owner semaphore!
2205 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
, bool roc
)
2207 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2208 struct nfs4_closedata
*calldata
;
2209 struct nfs4_state_owner
*sp
= state
->owner
;
2210 struct rpc_task
*task
;
2211 struct rpc_message msg
= {
2212 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2213 .rpc_cred
= state
->owner
->so_cred
,
2215 struct rpc_task_setup task_setup_data
= {
2216 .rpc_client
= server
->client
,
2217 .rpc_message
= &msg
,
2218 .callback_ops
= &nfs4_close_ops
,
2219 .workqueue
= nfsiod_workqueue
,
2220 .flags
= RPC_TASK_ASYNC
,
2222 int status
= -ENOMEM
;
2224 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2225 if (calldata
== NULL
)
2227 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2228 calldata
->inode
= state
->inode
;
2229 calldata
->state
= state
;
2230 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2231 calldata
->arg
.stateid
= &state
->open_stateid
;
2232 /* Serialization for the sequence id */
2233 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2234 if (calldata
->arg
.seqid
== NULL
)
2235 goto out_free_calldata
;
2236 calldata
->arg
.fmode
= 0;
2237 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2238 calldata
->res
.fattr
= &calldata
->fattr
;
2239 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2240 calldata
->res
.server
= server
;
2241 calldata
->roc
= roc
;
2242 nfs_sb_active(calldata
->inode
->i_sb
);
2244 msg
.rpc_argp
= &calldata
->arg
;
2245 msg
.rpc_resp
= &calldata
->res
;
2246 task_setup_data
.callback_data
= calldata
;
2247 task
= rpc_run_task(&task_setup_data
);
2249 return PTR_ERR(task
);
2252 status
= rpc_wait_for_completion_task(task
);
2259 pnfs_roc_release(state
->inode
);
2260 nfs4_put_open_state(state
);
2261 nfs4_put_state_owner(sp
);
2265 static struct inode
*
2266 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2268 struct nfs4_state
*state
;
2270 /* Protect against concurrent sillydeletes */
2271 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2272 ctx
->cred
, &ctx
->mdsthreshold
);
2274 return ERR_CAST(state
);
2276 return igrab(state
->inode
);
2279 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2281 if (ctx
->state
== NULL
)
2284 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2286 nfs4_close_state(ctx
->state
, ctx
->mode
);
2289 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2291 struct nfs4_server_caps_arg args
= {
2294 struct nfs4_server_caps_res res
= {};
2295 struct rpc_message msg
= {
2296 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2302 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2304 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2305 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2306 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2307 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2308 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2309 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2310 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2311 server
->caps
|= NFS_CAP_ACLS
;
2312 if (res
.has_links
!= 0)
2313 server
->caps
|= NFS_CAP_HARDLINKS
;
2314 if (res
.has_symlinks
!= 0)
2315 server
->caps
|= NFS_CAP_SYMLINKS
;
2316 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2317 server
->caps
|= NFS_CAP_FILEID
;
2318 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2319 server
->caps
|= NFS_CAP_MODE
;
2320 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2321 server
->caps
|= NFS_CAP_NLINK
;
2322 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2323 server
->caps
|= NFS_CAP_OWNER
;
2324 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2325 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2326 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2327 server
->caps
|= NFS_CAP_ATIME
;
2328 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2329 server
->caps
|= NFS_CAP_CTIME
;
2330 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2331 server
->caps
|= NFS_CAP_MTIME
;
2333 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2334 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2335 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2336 server
->acl_bitmask
= res
.acl_bitmask
;
2337 server
->fh_expire_type
= res
.fh_expire_type
;
2343 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2345 struct nfs4_exception exception
= { };
2348 err
= nfs4_handle_exception(server
,
2349 _nfs4_server_capabilities(server
, fhandle
),
2351 } while (exception
.retry
);
2355 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2356 struct nfs_fsinfo
*info
)
2358 struct nfs4_lookup_root_arg args
= {
2359 .bitmask
= nfs4_fattr_bitmap
,
2361 struct nfs4_lookup_res res
= {
2363 .fattr
= info
->fattr
,
2366 struct rpc_message msg
= {
2367 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2372 nfs_fattr_init(info
->fattr
);
2373 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2376 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2377 struct nfs_fsinfo
*info
)
2379 struct nfs4_exception exception
= { };
2382 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2385 case -NFS4ERR_WRONGSEC
:
2388 err
= nfs4_handle_exception(server
, err
, &exception
);
2390 } while (exception
.retry
);
2395 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2396 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2398 struct rpc_auth
*auth
;
2401 auth
= rpcauth_create(flavor
, server
->client
);
2406 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2411 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2412 struct nfs_fsinfo
*info
)
2414 int i
, len
, status
= 0;
2415 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2417 len
= rpcauth_list_flavors(flav_array
, ARRAY_SIZE(flav_array
));
2420 for (i
= 0; i
< len
; i
++) {
2421 /* AUTH_UNIX is the default flavor if none was specified,
2422 * thus has already been tried. */
2423 if (flav_array
[i
] == RPC_AUTH_UNIX
)
2426 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2427 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2432 * -EACCESS could mean that the user doesn't have correct permissions
2433 * to access the mount. It could also mean that we tried to mount
2434 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2435 * existing mount programs don't handle -EACCES very well so it should
2436 * be mapped to -EPERM instead.
2438 if (status
== -EACCES
)
2444 * get the file handle for the "/" directory on the server
2446 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2447 struct nfs_fsinfo
*info
)
2449 int minor_version
= server
->nfs_client
->cl_minorversion
;
2450 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2451 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2453 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2454 * by nfs4_map_errors() as this function exits.
2456 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2458 status
= nfs4_server_capabilities(server
, fhandle
);
2460 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2461 return nfs4_map_errors(status
);
2464 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2465 struct nfs_fsinfo
*info
)
2468 struct nfs_fattr
*fattr
= info
->fattr
;
2470 error
= nfs4_server_capabilities(server
, mntfh
);
2472 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2476 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2478 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2482 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2483 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2484 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2490 * Get locations and (maybe) other attributes of a referral.
2491 * Note that we'll actually follow the referral later when
2492 * we detect fsid mismatch in inode revalidation
2494 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2495 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2496 struct nfs_fh
*fhandle
)
2498 int status
= -ENOMEM
;
2499 struct page
*page
= NULL
;
2500 struct nfs4_fs_locations
*locations
= NULL
;
2502 page
= alloc_page(GFP_KERNEL
);
2505 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2506 if (locations
== NULL
)
2509 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2512 /* Make sure server returned a different fsid for the referral */
2513 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2514 dprintk("%s: server did not return a different fsid for"
2515 " a referral at %s\n", __func__
, name
->name
);
2519 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2520 nfs_fixup_referral_attributes(&locations
->fattr
);
2522 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2523 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2524 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2532 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2534 struct nfs4_getattr_arg args
= {
2536 .bitmask
= server
->attr_bitmask
,
2538 struct nfs4_getattr_res res
= {
2542 struct rpc_message msg
= {
2543 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2548 nfs_fattr_init(fattr
);
2549 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2552 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2554 struct nfs4_exception exception
= { };
2557 err
= nfs4_handle_exception(server
,
2558 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2560 } while (exception
.retry
);
2565 * The file is not closed if it is opened due to the a request to change
2566 * the size of the file. The open call will not be needed once the
2567 * VFS layer lookup-intents are implemented.
2569 * Close is called when the inode is destroyed.
2570 * If we haven't opened the file for O_WRONLY, we
2571 * need to in the size_change case to obtain a stateid.
2574 * Because OPEN is always done by name in nfsv4, it is
2575 * possible that we opened a different file by the same
2576 * name. We can recognize this race condition, but we
2577 * can't do anything about it besides returning an error.
2579 * This will be fixed with VFS changes (lookup-intent).
2582 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2583 struct iattr
*sattr
)
2585 struct inode
*inode
= dentry
->d_inode
;
2586 struct rpc_cred
*cred
= NULL
;
2587 struct nfs4_state
*state
= NULL
;
2590 if (pnfs_ld_layoutret_on_setattr(inode
))
2591 pnfs_return_layout(inode
);
2593 nfs_fattr_init(fattr
);
2595 /* Deal with open(O_TRUNC) */
2596 if (sattr
->ia_valid
& ATTR_OPEN
)
2597 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2599 /* Optimization: if the end result is no change, don't RPC */
2600 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2603 /* Search for an existing open(O_WRITE) file */
2604 if (sattr
->ia_valid
& ATTR_FILE
) {
2605 struct nfs_open_context
*ctx
;
2607 ctx
= nfs_file_open_context(sattr
->ia_file
);
2614 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2616 nfs_setattr_update_inode(inode
, sattr
);
2620 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2621 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2622 struct nfs_fattr
*fattr
)
2624 struct nfs_server
*server
= NFS_SERVER(dir
);
2626 struct nfs4_lookup_arg args
= {
2627 .bitmask
= server
->attr_bitmask
,
2628 .dir_fh
= NFS_FH(dir
),
2631 struct nfs4_lookup_res res
= {
2636 struct rpc_message msg
= {
2637 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2642 nfs_fattr_init(fattr
);
2644 dprintk("NFS call lookup %s\n", name
->name
);
2645 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2646 dprintk("NFS reply lookup: %d\n", status
);
2650 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2652 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2653 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2654 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2658 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2659 struct qstr
*name
, struct nfs_fh
*fhandle
,
2660 struct nfs_fattr
*fattr
)
2662 struct nfs4_exception exception
= { };
2663 struct rpc_clnt
*client
= *clnt
;
2666 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2668 case -NFS4ERR_BADNAME
:
2671 case -NFS4ERR_MOVED
:
2672 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2674 case -NFS4ERR_WRONGSEC
:
2676 if (client
!= *clnt
)
2679 client
= nfs4_create_sec_client(client
, dir
, name
);
2681 return PTR_ERR(client
);
2683 exception
.retry
= 1;
2686 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2688 } while (exception
.retry
);
2693 else if (client
!= *clnt
)
2694 rpc_shutdown_client(client
);
2699 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2700 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2703 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2705 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2706 if (client
!= NFS_CLIENT(dir
)) {
2707 rpc_shutdown_client(client
);
2708 nfs_fixup_secinfo_attributes(fattr
);
2714 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2715 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2718 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2720 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2722 rpc_shutdown_client(client
);
2723 return ERR_PTR(status
);
2728 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2730 struct nfs_server
*server
= NFS_SERVER(inode
);
2731 struct nfs4_accessargs args
= {
2732 .fh
= NFS_FH(inode
),
2733 .bitmask
= server
->cache_consistency_bitmask
,
2735 struct nfs4_accessres res
= {
2738 struct rpc_message msg
= {
2739 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2742 .rpc_cred
= entry
->cred
,
2744 int mode
= entry
->mask
;
2748 * Determine which access bits we want to ask for...
2750 if (mode
& MAY_READ
)
2751 args
.access
|= NFS4_ACCESS_READ
;
2752 if (S_ISDIR(inode
->i_mode
)) {
2753 if (mode
& MAY_WRITE
)
2754 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2755 if (mode
& MAY_EXEC
)
2756 args
.access
|= NFS4_ACCESS_LOOKUP
;
2758 if (mode
& MAY_WRITE
)
2759 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2760 if (mode
& MAY_EXEC
)
2761 args
.access
|= NFS4_ACCESS_EXECUTE
;
2764 res
.fattr
= nfs_alloc_fattr();
2765 if (res
.fattr
== NULL
)
2768 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2771 if (res
.access
& NFS4_ACCESS_READ
)
2772 entry
->mask
|= MAY_READ
;
2773 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2774 entry
->mask
|= MAY_WRITE
;
2775 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2776 entry
->mask
|= MAY_EXEC
;
2777 nfs_refresh_inode(inode
, res
.fattr
);
2779 nfs_free_fattr(res
.fattr
);
2783 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2785 struct nfs4_exception exception
= { };
2788 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2789 _nfs4_proc_access(inode
, entry
),
2791 } while (exception
.retry
);
2796 * TODO: For the time being, we don't try to get any attributes
2797 * along with any of the zero-copy operations READ, READDIR,
2800 * In the case of the first three, we want to put the GETATTR
2801 * after the read-type operation -- this is because it is hard
2802 * to predict the length of a GETATTR response in v4, and thus
2803 * align the READ data correctly. This means that the GETATTR
2804 * may end up partially falling into the page cache, and we should
2805 * shift it into the 'tail' of the xdr_buf before processing.
2806 * To do this efficiently, we need to know the total length
2807 * of data received, which doesn't seem to be available outside
2810 * In the case of WRITE, we also want to put the GETATTR after
2811 * the operation -- in this case because we want to make sure
2812 * we get the post-operation mtime and size.
2814 * Both of these changes to the XDR layer would in fact be quite
2815 * minor, but I decided to leave them for a subsequent patch.
2817 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2818 unsigned int pgbase
, unsigned int pglen
)
2820 struct nfs4_readlink args
= {
2821 .fh
= NFS_FH(inode
),
2826 struct nfs4_readlink_res res
;
2827 struct rpc_message msg
= {
2828 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2833 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2836 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2837 unsigned int pgbase
, unsigned int pglen
)
2839 struct nfs4_exception exception
= { };
2842 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2843 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2845 } while (exception
.retry
);
2850 * This is just for mknod. open(O_CREAT) will always do ->open_context().
2853 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2856 struct nfs_open_context
*ctx
;
2857 struct nfs4_state
*state
;
2860 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
2862 return PTR_ERR(ctx
);
2864 sattr
->ia_mode
&= ~current_umask();
2865 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
2866 flags
, sattr
, ctx
->cred
,
2867 &ctx
->mdsthreshold
);
2869 if (IS_ERR(state
)) {
2870 status
= PTR_ERR(state
);
2873 d_add(dentry
, igrab(state
->inode
));
2874 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2877 put_nfs_open_context(ctx
);
2881 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2883 struct nfs_server
*server
= NFS_SERVER(dir
);
2884 struct nfs_removeargs args
= {
2888 struct nfs_removeres res
= {
2891 struct rpc_message msg
= {
2892 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2898 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2900 update_changeattr(dir
, &res
.cinfo
);
2904 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2906 struct nfs4_exception exception
= { };
2909 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2910 _nfs4_proc_remove(dir
, name
),
2912 } while (exception
.retry
);
2916 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2918 struct nfs_server
*server
= NFS_SERVER(dir
);
2919 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2920 struct nfs_removeres
*res
= msg
->rpc_resp
;
2922 res
->server
= server
;
2923 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2924 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
2927 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
2929 if (nfs4_setup_sequence(NFS_SERVER(data
->dir
),
2930 &data
->args
.seq_args
,
2934 rpc_call_start(task
);
2937 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2939 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2941 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2943 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2945 update_changeattr(dir
, &res
->cinfo
);
2949 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2951 struct nfs_server
*server
= NFS_SERVER(dir
);
2952 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2953 struct nfs_renameres
*res
= msg
->rpc_resp
;
2955 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2956 res
->server
= server
;
2957 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
2960 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
2962 if (nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
2963 &data
->args
.seq_args
,
2967 rpc_call_start(task
);
2970 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2971 struct inode
*new_dir
)
2973 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2975 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2977 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2980 update_changeattr(old_dir
, &res
->old_cinfo
);
2981 update_changeattr(new_dir
, &res
->new_cinfo
);
2985 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2986 struct inode
*new_dir
, struct qstr
*new_name
)
2988 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2989 struct nfs_renameargs arg
= {
2990 .old_dir
= NFS_FH(old_dir
),
2991 .new_dir
= NFS_FH(new_dir
),
2992 .old_name
= old_name
,
2993 .new_name
= new_name
,
2995 struct nfs_renameres res
= {
2998 struct rpc_message msg
= {
2999 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3003 int status
= -ENOMEM
;
3005 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3007 update_changeattr(old_dir
, &res
.old_cinfo
);
3008 update_changeattr(new_dir
, &res
.new_cinfo
);
3013 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3014 struct inode
*new_dir
, struct qstr
*new_name
)
3016 struct nfs4_exception exception
= { };
3019 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3020 _nfs4_proc_rename(old_dir
, old_name
,
3023 } while (exception
.retry
);
3027 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3029 struct nfs_server
*server
= NFS_SERVER(inode
);
3030 struct nfs4_link_arg arg
= {
3031 .fh
= NFS_FH(inode
),
3032 .dir_fh
= NFS_FH(dir
),
3034 .bitmask
= server
->attr_bitmask
,
3036 struct nfs4_link_res res
= {
3039 struct rpc_message msg
= {
3040 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3044 int status
= -ENOMEM
;
3046 res
.fattr
= nfs_alloc_fattr();
3047 if (res
.fattr
== NULL
)
3050 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3052 update_changeattr(dir
, &res
.cinfo
);
3053 nfs_post_op_update_inode(inode
, res
.fattr
);
3056 nfs_free_fattr(res
.fattr
);
3060 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3062 struct nfs4_exception exception
= { };
3065 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3066 _nfs4_proc_link(inode
, dir
, name
),
3068 } while (exception
.retry
);
3072 struct nfs4_createdata
{
3073 struct rpc_message msg
;
3074 struct nfs4_create_arg arg
;
3075 struct nfs4_create_res res
;
3077 struct nfs_fattr fattr
;
3080 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3081 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3083 struct nfs4_createdata
*data
;
3085 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3087 struct nfs_server
*server
= NFS_SERVER(dir
);
3089 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3090 data
->msg
.rpc_argp
= &data
->arg
;
3091 data
->msg
.rpc_resp
= &data
->res
;
3092 data
->arg
.dir_fh
= NFS_FH(dir
);
3093 data
->arg
.server
= server
;
3094 data
->arg
.name
= name
;
3095 data
->arg
.attrs
= sattr
;
3096 data
->arg
.ftype
= ftype
;
3097 data
->arg
.bitmask
= server
->attr_bitmask
;
3098 data
->res
.server
= server
;
3099 data
->res
.fh
= &data
->fh
;
3100 data
->res
.fattr
= &data
->fattr
;
3101 nfs_fattr_init(data
->res
.fattr
);
3106 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3108 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3109 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3111 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3112 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3117 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3122 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3123 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3125 struct nfs4_createdata
*data
;
3126 int status
= -ENAMETOOLONG
;
3128 if (len
> NFS4_MAXPATHLEN
)
3132 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3136 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3137 data
->arg
.u
.symlink
.pages
= &page
;
3138 data
->arg
.u
.symlink
.len
= len
;
3140 status
= nfs4_do_create(dir
, dentry
, data
);
3142 nfs4_free_createdata(data
);
3147 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3148 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3150 struct nfs4_exception exception
= { };
3153 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3154 _nfs4_proc_symlink(dir
, dentry
, page
,
3157 } while (exception
.retry
);
3161 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3162 struct iattr
*sattr
)
3164 struct nfs4_createdata
*data
;
3165 int status
= -ENOMEM
;
3167 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3171 status
= nfs4_do_create(dir
, dentry
, data
);
3173 nfs4_free_createdata(data
);
3178 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3179 struct iattr
*sattr
)
3181 struct nfs4_exception exception
= { };
3184 sattr
->ia_mode
&= ~current_umask();
3186 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3187 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3189 } while (exception
.retry
);
3193 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3194 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3196 struct inode
*dir
= dentry
->d_inode
;
3197 struct nfs4_readdir_arg args
= {
3202 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3205 struct nfs4_readdir_res res
;
3206 struct rpc_message msg
= {
3207 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3214 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3215 dentry
->d_parent
->d_name
.name
,
3216 dentry
->d_name
.name
,
3217 (unsigned long long)cookie
);
3218 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
3219 res
.pgbase
= args
.pgbase
;
3220 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3222 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3223 status
+= args
.pgbase
;
3226 nfs_invalidate_atime(dir
);
3228 dprintk("%s: returns %d\n", __func__
, status
);
3232 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3233 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3235 struct nfs4_exception exception
= { };
3238 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3239 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3240 pages
, count
, plus
),
3242 } while (exception
.retry
);
3246 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3247 struct iattr
*sattr
, dev_t rdev
)
3249 struct nfs4_createdata
*data
;
3250 int mode
= sattr
->ia_mode
;
3251 int status
= -ENOMEM
;
3253 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
3254 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
3256 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3261 data
->arg
.ftype
= NF4FIFO
;
3262 else if (S_ISBLK(mode
)) {
3263 data
->arg
.ftype
= NF4BLK
;
3264 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3265 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3267 else if (S_ISCHR(mode
)) {
3268 data
->arg
.ftype
= NF4CHR
;
3269 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3270 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3273 status
= nfs4_do_create(dir
, dentry
, data
);
3275 nfs4_free_createdata(data
);
3280 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3281 struct iattr
*sattr
, dev_t rdev
)
3283 struct nfs4_exception exception
= { };
3286 sattr
->ia_mode
&= ~current_umask();
3288 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3289 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3291 } while (exception
.retry
);
3295 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3296 struct nfs_fsstat
*fsstat
)
3298 struct nfs4_statfs_arg args
= {
3300 .bitmask
= server
->attr_bitmask
,
3302 struct nfs4_statfs_res res
= {
3305 struct rpc_message msg
= {
3306 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3311 nfs_fattr_init(fsstat
->fattr
);
3312 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3315 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3317 struct nfs4_exception exception
= { };
3320 err
= nfs4_handle_exception(server
,
3321 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3323 } while (exception
.retry
);
3327 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3328 struct nfs_fsinfo
*fsinfo
)
3330 struct nfs4_fsinfo_arg args
= {
3332 .bitmask
= server
->attr_bitmask
,
3334 struct nfs4_fsinfo_res res
= {
3337 struct rpc_message msg
= {
3338 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3343 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3346 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3348 struct nfs4_exception exception
= { };
3352 err
= nfs4_handle_exception(server
,
3353 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3355 } while (exception
.retry
);
3359 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3363 nfs_fattr_init(fsinfo
->fattr
);
3364 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3366 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3371 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3372 struct nfs_pathconf
*pathconf
)
3374 struct nfs4_pathconf_arg args
= {
3376 .bitmask
= server
->attr_bitmask
,
3378 struct nfs4_pathconf_res res
= {
3379 .pathconf
= pathconf
,
3381 struct rpc_message msg
= {
3382 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3387 /* None of the pathconf attributes are mandatory to implement */
3388 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3389 memset(pathconf
, 0, sizeof(*pathconf
));
3393 nfs_fattr_init(pathconf
->fattr
);
3394 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3397 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3398 struct nfs_pathconf
*pathconf
)
3400 struct nfs4_exception exception
= { };
3404 err
= nfs4_handle_exception(server
,
3405 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3407 } while (exception
.retry
);
3411 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3413 nfs_invalidate_atime(data
->header
->inode
);
3416 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3418 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3420 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3421 rpc_restart_call_prepare(task
);
3425 __nfs4_read_done_cb(data
);
3426 if (task
->tk_status
> 0)
3427 renew_lease(server
, data
->timestamp
);
3431 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3434 dprintk("--> %s\n", __func__
);
3436 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3439 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3440 nfs4_read_done_cb(task
, data
);
3443 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3445 data
->timestamp
= jiffies
;
3446 data
->read_done_cb
= nfs4_read_done_cb
;
3447 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3448 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3451 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3453 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3454 &data
->args
.seq_args
,
3458 rpc_call_start(task
);
3461 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3463 struct inode
*inode
= data
->header
->inode
;
3465 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3466 rpc_restart_call_prepare(task
);
3469 if (task
->tk_status
>= 0) {
3470 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3471 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3476 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3478 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3480 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3481 nfs4_write_done_cb(task
, data
);
3485 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3487 const struct nfs_pgio_header
*hdr
= data
->header
;
3489 /* Don't request attributes for pNFS or O_DIRECT writes */
3490 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3492 /* Otherwise, request attributes if and only if we don't hold
3495 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3498 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3500 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3502 if (!nfs4_write_need_cache_consistency_data(data
)) {
3503 data
->args
.bitmask
= NULL
;
3504 data
->res
.fattr
= NULL
;
3506 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3508 if (!data
->write_done_cb
)
3509 data
->write_done_cb
= nfs4_write_done_cb
;
3510 data
->res
.server
= server
;
3511 data
->timestamp
= jiffies
;
3513 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3514 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3517 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3519 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3520 &data
->args
.seq_args
,
3524 rpc_call_start(task
);
3527 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3529 if (nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3530 &data
->args
.seq_args
,
3534 rpc_call_start(task
);
3537 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3539 struct inode
*inode
= data
->inode
;
3541 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3542 rpc_restart_call_prepare(task
);
3548 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3550 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3552 return data
->commit_done_cb(task
, data
);
3555 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3557 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3559 if (data
->commit_done_cb
== NULL
)
3560 data
->commit_done_cb
= nfs4_commit_done_cb
;
3561 data
->res
.server
= server
;
3562 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3563 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3566 struct nfs4_renewdata
{
3567 struct nfs_client
*client
;
3568 unsigned long timestamp
;
3572 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3573 * standalone procedure for queueing an asynchronous RENEW.
3575 static void nfs4_renew_release(void *calldata
)
3577 struct nfs4_renewdata
*data
= calldata
;
3578 struct nfs_client
*clp
= data
->client
;
3580 if (atomic_read(&clp
->cl_count
) > 1)
3581 nfs4_schedule_state_renewal(clp
);
3582 nfs_put_client(clp
);
3586 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3588 struct nfs4_renewdata
*data
= calldata
;
3589 struct nfs_client
*clp
= data
->client
;
3590 unsigned long timestamp
= data
->timestamp
;
3592 if (task
->tk_status
< 0) {
3593 /* Unless we're shutting down, schedule state recovery! */
3594 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3596 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3597 nfs4_schedule_lease_recovery(clp
);
3600 nfs4_schedule_path_down_recovery(clp
);
3602 do_renew_lease(clp
, timestamp
);
3605 static const struct rpc_call_ops nfs4_renew_ops
= {
3606 .rpc_call_done
= nfs4_renew_done
,
3607 .rpc_release
= nfs4_renew_release
,
3610 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3612 struct rpc_message msg
= {
3613 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3617 struct nfs4_renewdata
*data
;
3619 if (renew_flags
== 0)
3621 if (!atomic_inc_not_zero(&clp
->cl_count
))
3623 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3627 data
->timestamp
= jiffies
;
3628 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3629 &nfs4_renew_ops
, data
);
3632 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3634 struct rpc_message msg
= {
3635 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3639 unsigned long now
= jiffies
;
3642 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3645 do_renew_lease(clp
, now
);
3649 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3651 return (server
->caps
& NFS_CAP_ACLS
)
3652 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3653 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3656 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3657 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3660 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3662 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3663 struct page
**pages
, unsigned int *pgbase
)
3665 struct page
*newpage
, **spages
;
3671 len
= min_t(size_t, PAGE_CACHE_SIZE
, buflen
);
3672 newpage
= alloc_page(GFP_KERNEL
);
3674 if (newpage
== NULL
)
3676 memcpy(page_address(newpage
), buf
, len
);
3681 } while (buflen
!= 0);
3687 __free_page(spages
[rc
-1]);
3691 struct nfs4_cached_acl
{
3697 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3699 struct nfs_inode
*nfsi
= NFS_I(inode
);
3701 spin_lock(&inode
->i_lock
);
3702 kfree(nfsi
->nfs4_acl
);
3703 nfsi
->nfs4_acl
= acl
;
3704 spin_unlock(&inode
->i_lock
);
3707 static void nfs4_zap_acl_attr(struct inode
*inode
)
3709 nfs4_set_cached_acl(inode
, NULL
);
3712 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3714 struct nfs_inode
*nfsi
= NFS_I(inode
);
3715 struct nfs4_cached_acl
*acl
;
3718 spin_lock(&inode
->i_lock
);
3719 acl
= nfsi
->nfs4_acl
;
3722 if (buf
== NULL
) /* user is just asking for length */
3724 if (acl
->cached
== 0)
3726 ret
= -ERANGE
; /* see getxattr(2) man page */
3727 if (acl
->len
> buflen
)
3729 memcpy(buf
, acl
->data
, acl
->len
);
3733 spin_unlock(&inode
->i_lock
);
3737 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3739 struct nfs4_cached_acl
*acl
;
3740 size_t buflen
= sizeof(*acl
) + acl_len
;
3742 if (pages
&& buflen
<= PAGE_SIZE
) {
3743 acl
= kmalloc(buflen
, GFP_KERNEL
);
3747 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3749 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3756 nfs4_set_cached_acl(inode
, acl
);
3760 * The getxattr API returns the required buffer length when called with a
3761 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3762 * the required buf. On a NULL buf, we send a page of data to the server
3763 * guessing that the ACL request can be serviced by a page. If so, we cache
3764 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3765 * the cache. If not so, we throw away the page, and cache the required
3766 * length. The next getxattr call will then produce another round trip to
3767 * the server, this time with the input buf of the required size.
3769 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3771 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3772 struct nfs_getaclargs args
= {
3773 .fh
= NFS_FH(inode
),
3777 struct nfs_getaclres res
= {
3780 struct rpc_message msg
= {
3781 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3785 int ret
= -ENOMEM
, npages
, i
;
3788 npages
= (buflen
+ PAGE_SIZE
- 1) >> PAGE_SHIFT
;
3789 /* As long as we're doing a round trip to the server anyway,
3790 * let's be prepared for a page of acl data. */
3794 /* Add an extra page to handle the bitmap returned */
3797 for (i
= 0; i
< npages
; i
++) {
3798 pages
[i
] = alloc_page(GFP_KERNEL
);
3803 /* for decoding across pages */
3804 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3805 if (!res
.acl_scratch
)
3808 args
.acl_len
= npages
* PAGE_SIZE
;
3809 args
.acl_pgbase
= 0;
3811 /* Let decode_getfacl know not to fail if the ACL data is larger than
3812 * the page we send as a guess */
3814 res
.acl_flags
|= NFS4_ACL_LEN_REQUEST
;
3816 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3817 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3818 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3819 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3823 acl_len
= res
.acl_len
;
3824 if (acl_len
> args
.acl_len
)
3825 nfs4_write_cached_acl(inode
, NULL
, 0, acl_len
);
3827 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
,
3831 if (acl_len
> buflen
)
3833 _copy_from_pages(buf
, pages
, res
.acl_data_offset
,
3838 for (i
= 0; i
< npages
; i
++)
3840 __free_page(pages
[i
]);
3841 if (res
.acl_scratch
)
3842 __free_page(res
.acl_scratch
);
3846 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3848 struct nfs4_exception exception
= { };
3851 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3854 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3855 } while (exception
.retry
);
3859 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3861 struct nfs_server
*server
= NFS_SERVER(inode
);
3864 if (!nfs4_server_supports_acls(server
))
3866 ret
= nfs_revalidate_inode(server
, inode
);
3869 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3870 nfs_zap_acl_cache(inode
);
3871 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3873 /* -ENOENT is returned if there is no ACL or if there is an ACL
3874 * but no cached acl data, just the acl length */
3876 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3879 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3881 struct nfs_server
*server
= NFS_SERVER(inode
);
3882 struct page
*pages
[NFS4ACL_MAXPAGES
];
3883 struct nfs_setaclargs arg
= {
3884 .fh
= NFS_FH(inode
),
3888 struct nfs_setaclres res
;
3889 struct rpc_message msg
= {
3890 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3896 if (!nfs4_server_supports_acls(server
))
3898 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3901 nfs4_inode_return_delegation(inode
);
3902 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3905 * Free each page after tx, so the only ref left is
3906 * held by the network stack
3909 put_page(pages
[i
-1]);
3912 * Acl update can result in inode attribute update.
3913 * so mark the attribute cache invalid.
3915 spin_lock(&inode
->i_lock
);
3916 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3917 spin_unlock(&inode
->i_lock
);
3918 nfs_access_zap_cache(inode
);
3919 nfs_zap_acl_cache(inode
);
3923 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3925 struct nfs4_exception exception
= { };
3928 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3929 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3931 } while (exception
.retry
);
3936 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3938 struct nfs_client
*clp
= server
->nfs_client
;
3940 if (task
->tk_status
>= 0)
3942 switch(task
->tk_status
) {
3943 case -NFS4ERR_DELEG_REVOKED
:
3944 case -NFS4ERR_ADMIN_REVOKED
:
3945 case -NFS4ERR_BAD_STATEID
:
3948 nfs_remove_bad_delegation(state
->inode
);
3949 case -NFS4ERR_OPENMODE
:
3952 nfs4_schedule_stateid_recovery(server
, state
);
3953 goto wait_on_recovery
;
3954 case -NFS4ERR_EXPIRED
:
3956 nfs4_schedule_stateid_recovery(server
, state
);
3957 case -NFS4ERR_STALE_STATEID
:
3958 case -NFS4ERR_STALE_CLIENTID
:
3959 nfs4_schedule_lease_recovery(clp
);
3960 goto wait_on_recovery
;
3961 #if defined(CONFIG_NFS_V4_1)
3962 case -NFS4ERR_BADSESSION
:
3963 case -NFS4ERR_BADSLOT
:
3964 case -NFS4ERR_BAD_HIGH_SLOT
:
3965 case -NFS4ERR_DEADSESSION
:
3966 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3967 case -NFS4ERR_SEQ_FALSE_RETRY
:
3968 case -NFS4ERR_SEQ_MISORDERED
:
3969 dprintk("%s ERROR %d, Reset session\n", __func__
,
3971 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
3972 task
->tk_status
= 0;
3974 #endif /* CONFIG_NFS_V4_1 */
3975 case -NFS4ERR_DELAY
:
3976 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3977 case -NFS4ERR_GRACE
:
3979 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3980 task
->tk_status
= 0;
3982 case -NFS4ERR_RETRY_UNCACHED_REP
:
3983 case -NFS4ERR_OLD_STATEID
:
3984 task
->tk_status
= 0;
3987 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3990 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3991 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3992 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3993 task
->tk_status
= 0;
3997 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
3998 nfs4_verifier
*bootverf
)
4002 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4003 /* An impossible timestamp guarantees this value
4004 * will never match a generated boot time. */
4006 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4008 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4009 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4010 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4012 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4016 * nfs4_proc_setclientid - Negotiate client ID
4017 * @clp: state data structure
4018 * @program: RPC program for NFSv4 callback service
4019 * @port: IP port number for NFS4 callback service
4020 * @cred: RPC credential to use for this call
4021 * @res: where to place the result
4023 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4025 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4026 unsigned short port
, struct rpc_cred
*cred
,
4027 struct nfs4_setclientid_res
*res
)
4029 nfs4_verifier sc_verifier
;
4030 struct nfs4_setclientid setclientid
= {
4031 .sc_verifier
= &sc_verifier
,
4033 .sc_cb_ident
= clp
->cl_cb_ident
,
4035 struct rpc_message msg
= {
4036 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4037 .rpc_argp
= &setclientid
,
4043 /* nfs_client_id4 */
4044 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4046 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
4047 sizeof(setclientid
.sc_name
), "%s/%s %s",
4049 rpc_peeraddr2str(clp
->cl_rpcclient
,
4051 rpc_peeraddr2str(clp
->cl_rpcclient
,
4052 RPC_DISPLAY_PROTO
));
4054 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4055 sizeof(setclientid
.sc_netid
),
4056 rpc_peeraddr2str(clp
->cl_rpcclient
,
4057 RPC_DISPLAY_NETID
));
4059 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4060 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4061 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4063 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4064 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4065 setclientid
.sc_name_len
, setclientid
.sc_name
);
4066 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4067 dprintk("NFS reply setclientid: %d\n", status
);
4072 * nfs4_proc_setclientid_confirm - Confirm client ID
4073 * @clp: state data structure
4074 * @res: result of a previous SETCLIENTID
4075 * @cred: RPC credential to use for this call
4077 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4079 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4080 struct nfs4_setclientid_res
*arg
,
4081 struct rpc_cred
*cred
)
4083 struct nfs_fsinfo fsinfo
;
4084 struct rpc_message msg
= {
4085 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4087 .rpc_resp
= &fsinfo
,
4093 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4094 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4097 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4099 spin_lock(&clp
->cl_lock
);
4100 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4101 clp
->cl_last_renewal
= now
;
4102 spin_unlock(&clp
->cl_lock
);
4104 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4108 struct nfs4_delegreturndata
{
4109 struct nfs4_delegreturnargs args
;
4110 struct nfs4_delegreturnres res
;
4112 nfs4_stateid stateid
;
4113 unsigned long timestamp
;
4114 struct nfs_fattr fattr
;
4118 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4120 struct nfs4_delegreturndata
*data
= calldata
;
4122 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4125 switch (task
->tk_status
) {
4126 case -NFS4ERR_STALE_STATEID
:
4127 case -NFS4ERR_EXPIRED
:
4129 renew_lease(data
->res
.server
, data
->timestamp
);
4132 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4134 rpc_restart_call_prepare(task
);
4138 data
->rpc_status
= task
->tk_status
;
4141 static void nfs4_delegreturn_release(void *calldata
)
4146 #if defined(CONFIG_NFS_V4_1)
4147 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4149 struct nfs4_delegreturndata
*d_data
;
4151 d_data
= (struct nfs4_delegreturndata
*)data
;
4153 if (nfs4_setup_sequence(d_data
->res
.server
,
4154 &d_data
->args
.seq_args
,
4155 &d_data
->res
.seq_res
, task
))
4157 rpc_call_start(task
);
4159 #endif /* CONFIG_NFS_V4_1 */
4161 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4162 #if defined(CONFIG_NFS_V4_1)
4163 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4164 #endif /* CONFIG_NFS_V4_1 */
4165 .rpc_call_done
= nfs4_delegreturn_done
,
4166 .rpc_release
= nfs4_delegreturn_release
,
4169 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4171 struct nfs4_delegreturndata
*data
;
4172 struct nfs_server
*server
= NFS_SERVER(inode
);
4173 struct rpc_task
*task
;
4174 struct rpc_message msg
= {
4175 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4178 struct rpc_task_setup task_setup_data
= {
4179 .rpc_client
= server
->client
,
4180 .rpc_message
= &msg
,
4181 .callback_ops
= &nfs4_delegreturn_ops
,
4182 .flags
= RPC_TASK_ASYNC
,
4186 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4189 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4190 data
->args
.fhandle
= &data
->fh
;
4191 data
->args
.stateid
= &data
->stateid
;
4192 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4193 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4194 nfs4_stateid_copy(&data
->stateid
, stateid
);
4195 data
->res
.fattr
= &data
->fattr
;
4196 data
->res
.server
= server
;
4197 nfs_fattr_init(data
->res
.fattr
);
4198 data
->timestamp
= jiffies
;
4199 data
->rpc_status
= 0;
4201 task_setup_data
.callback_data
= data
;
4202 msg
.rpc_argp
= &data
->args
;
4203 msg
.rpc_resp
= &data
->res
;
4204 task
= rpc_run_task(&task_setup_data
);
4206 return PTR_ERR(task
);
4209 status
= nfs4_wait_for_completion_rpc_task(task
);
4212 status
= data
->rpc_status
;
4214 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4216 nfs_refresh_inode(inode
, &data
->fattr
);
4222 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4224 struct nfs_server
*server
= NFS_SERVER(inode
);
4225 struct nfs4_exception exception
= { };
4228 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4230 case -NFS4ERR_STALE_STATEID
:
4231 case -NFS4ERR_EXPIRED
:
4235 err
= nfs4_handle_exception(server
, err
, &exception
);
4236 } while (exception
.retry
);
4240 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4241 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4244 * sleep, with exponential backoff, and retry the LOCK operation.
4246 static unsigned long
4247 nfs4_set_lock_task_retry(unsigned long timeout
)
4249 freezable_schedule_timeout_killable(timeout
);
4251 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4252 return NFS4_LOCK_MAXTIMEOUT
;
4256 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4258 struct inode
*inode
= state
->inode
;
4259 struct nfs_server
*server
= NFS_SERVER(inode
);
4260 struct nfs_client
*clp
= server
->nfs_client
;
4261 struct nfs_lockt_args arg
= {
4262 .fh
= NFS_FH(inode
),
4265 struct nfs_lockt_res res
= {
4268 struct rpc_message msg
= {
4269 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4272 .rpc_cred
= state
->owner
->so_cred
,
4274 struct nfs4_lock_state
*lsp
;
4277 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4278 status
= nfs4_set_lock_state(state
, request
);
4281 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4282 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4283 arg
.lock_owner
.s_dev
= server
->s_dev
;
4284 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4287 request
->fl_type
= F_UNLCK
;
4289 case -NFS4ERR_DENIED
:
4292 request
->fl_ops
->fl_release_private(request
);
4297 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4299 struct nfs4_exception exception
= { };
4303 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4304 _nfs4_proc_getlk(state
, cmd
, request
),
4306 } while (exception
.retry
);
4310 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4313 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4315 res
= posix_lock_file_wait(file
, fl
);
4318 res
= flock_lock_file_wait(file
, fl
);
4326 struct nfs4_unlockdata
{
4327 struct nfs_locku_args arg
;
4328 struct nfs_locku_res res
;
4329 struct nfs4_lock_state
*lsp
;
4330 struct nfs_open_context
*ctx
;
4331 struct file_lock fl
;
4332 const struct nfs_server
*server
;
4333 unsigned long timestamp
;
4336 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4337 struct nfs_open_context
*ctx
,
4338 struct nfs4_lock_state
*lsp
,
4339 struct nfs_seqid
*seqid
)
4341 struct nfs4_unlockdata
*p
;
4342 struct inode
*inode
= lsp
->ls_state
->inode
;
4344 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4347 p
->arg
.fh
= NFS_FH(inode
);
4349 p
->arg
.seqid
= seqid
;
4350 p
->res
.seqid
= seqid
;
4351 p
->arg
.stateid
= &lsp
->ls_stateid
;
4353 atomic_inc(&lsp
->ls_count
);
4354 /* Ensure we don't close file until we're done freeing locks! */
4355 p
->ctx
= get_nfs_open_context(ctx
);
4356 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4357 p
->server
= NFS_SERVER(inode
);
4361 static void nfs4_locku_release_calldata(void *data
)
4363 struct nfs4_unlockdata
*calldata
= data
;
4364 nfs_free_seqid(calldata
->arg
.seqid
);
4365 nfs4_put_lock_state(calldata
->lsp
);
4366 put_nfs_open_context(calldata
->ctx
);
4370 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4372 struct nfs4_unlockdata
*calldata
= data
;
4374 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4376 switch (task
->tk_status
) {
4378 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4379 &calldata
->res
.stateid
);
4380 renew_lease(calldata
->server
, calldata
->timestamp
);
4382 case -NFS4ERR_BAD_STATEID
:
4383 case -NFS4ERR_OLD_STATEID
:
4384 case -NFS4ERR_STALE_STATEID
:
4385 case -NFS4ERR_EXPIRED
:
4388 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4389 rpc_restart_call_prepare(task
);
4393 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4395 struct nfs4_unlockdata
*calldata
= data
;
4397 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4399 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
4400 /* Note: exit _without_ running nfs4_locku_done */
4401 task
->tk_action
= NULL
;
4404 calldata
->timestamp
= jiffies
;
4405 if (nfs4_setup_sequence(calldata
->server
,
4406 &calldata
->arg
.seq_args
,
4407 &calldata
->res
.seq_res
, task
))
4409 rpc_call_start(task
);
4412 static const struct rpc_call_ops nfs4_locku_ops
= {
4413 .rpc_call_prepare
= nfs4_locku_prepare
,
4414 .rpc_call_done
= nfs4_locku_done
,
4415 .rpc_release
= nfs4_locku_release_calldata
,
4418 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4419 struct nfs_open_context
*ctx
,
4420 struct nfs4_lock_state
*lsp
,
4421 struct nfs_seqid
*seqid
)
4423 struct nfs4_unlockdata
*data
;
4424 struct rpc_message msg
= {
4425 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4426 .rpc_cred
= ctx
->cred
,
4428 struct rpc_task_setup task_setup_data
= {
4429 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4430 .rpc_message
= &msg
,
4431 .callback_ops
= &nfs4_locku_ops
,
4432 .workqueue
= nfsiod_workqueue
,
4433 .flags
= RPC_TASK_ASYNC
,
4436 /* Ensure this is an unlock - when canceling a lock, the
4437 * canceled lock is passed in, and it won't be an unlock.
4439 fl
->fl_type
= F_UNLCK
;
4441 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4443 nfs_free_seqid(seqid
);
4444 return ERR_PTR(-ENOMEM
);
4447 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4448 msg
.rpc_argp
= &data
->arg
;
4449 msg
.rpc_resp
= &data
->res
;
4450 task_setup_data
.callback_data
= data
;
4451 return rpc_run_task(&task_setup_data
);
4454 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4456 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4457 struct nfs_seqid
*seqid
;
4458 struct nfs4_lock_state
*lsp
;
4459 struct rpc_task
*task
;
4461 unsigned char fl_flags
= request
->fl_flags
;
4463 status
= nfs4_set_lock_state(state
, request
);
4464 /* Unlock _before_ we do the RPC call */
4465 request
->fl_flags
|= FL_EXISTS
;
4466 down_read(&nfsi
->rwsem
);
4467 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4468 up_read(&nfsi
->rwsem
);
4471 up_read(&nfsi
->rwsem
);
4474 /* Is this a delegated lock? */
4475 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4477 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4478 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4482 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4483 status
= PTR_ERR(task
);
4486 status
= nfs4_wait_for_completion_rpc_task(task
);
4489 request
->fl_flags
= fl_flags
;
4493 struct nfs4_lockdata
{
4494 struct nfs_lock_args arg
;
4495 struct nfs_lock_res res
;
4496 struct nfs4_lock_state
*lsp
;
4497 struct nfs_open_context
*ctx
;
4498 struct file_lock fl
;
4499 unsigned long timestamp
;
4502 struct nfs_server
*server
;
4505 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4506 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4509 struct nfs4_lockdata
*p
;
4510 struct inode
*inode
= lsp
->ls_state
->inode
;
4511 struct nfs_server
*server
= NFS_SERVER(inode
);
4513 p
= kzalloc(sizeof(*p
), gfp_mask
);
4517 p
->arg
.fh
= NFS_FH(inode
);
4519 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4520 if (p
->arg
.open_seqid
== NULL
)
4522 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4523 if (p
->arg
.lock_seqid
== NULL
)
4524 goto out_free_seqid
;
4525 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4526 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4527 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4528 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4529 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4532 atomic_inc(&lsp
->ls_count
);
4533 p
->ctx
= get_nfs_open_context(ctx
);
4534 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4537 nfs_free_seqid(p
->arg
.open_seqid
);
4543 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4545 struct nfs4_lockdata
*data
= calldata
;
4546 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4548 dprintk("%s: begin!\n", __func__
);
4549 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4551 /* Do we need to do an open_to_lock_owner? */
4552 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4553 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4555 data
->arg
.open_stateid
= &state
->stateid
;
4556 data
->arg
.new_lock_owner
= 1;
4557 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4559 data
->arg
.new_lock_owner
= 0;
4560 data
->timestamp
= jiffies
;
4561 if (nfs4_setup_sequence(data
->server
,
4562 &data
->arg
.seq_args
,
4563 &data
->res
.seq_res
, task
))
4565 rpc_call_start(task
);
4566 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4569 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4571 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4572 nfs4_lock_prepare(task
, calldata
);
4575 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4577 struct nfs4_lockdata
*data
= calldata
;
4579 dprintk("%s: begin!\n", __func__
);
4581 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4584 data
->rpc_status
= task
->tk_status
;
4585 if (data
->arg
.new_lock_owner
!= 0) {
4586 if (data
->rpc_status
== 0)
4587 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4591 if (data
->rpc_status
== 0) {
4592 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4593 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4594 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4597 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4600 static void nfs4_lock_release(void *calldata
)
4602 struct nfs4_lockdata
*data
= calldata
;
4604 dprintk("%s: begin!\n", __func__
);
4605 nfs_free_seqid(data
->arg
.open_seqid
);
4606 if (data
->cancelled
!= 0) {
4607 struct rpc_task
*task
;
4608 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4609 data
->arg
.lock_seqid
);
4611 rpc_put_task_async(task
);
4612 dprintk("%s: cancelling lock!\n", __func__
);
4614 nfs_free_seqid(data
->arg
.lock_seqid
);
4615 nfs4_put_lock_state(data
->lsp
);
4616 put_nfs_open_context(data
->ctx
);
4618 dprintk("%s: done!\n", __func__
);
4621 static const struct rpc_call_ops nfs4_lock_ops
= {
4622 .rpc_call_prepare
= nfs4_lock_prepare
,
4623 .rpc_call_done
= nfs4_lock_done
,
4624 .rpc_release
= nfs4_lock_release
,
4627 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4628 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4629 .rpc_call_done
= nfs4_lock_done
,
4630 .rpc_release
= nfs4_lock_release
,
4633 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4636 case -NFS4ERR_ADMIN_REVOKED
:
4637 case -NFS4ERR_BAD_STATEID
:
4638 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4639 if (new_lock_owner
!= 0 ||
4640 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4641 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4643 case -NFS4ERR_STALE_STATEID
:
4644 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4645 case -NFS4ERR_EXPIRED
:
4646 nfs4_schedule_lease_recovery(server
->nfs_client
);
4650 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4652 struct nfs4_lockdata
*data
;
4653 struct rpc_task
*task
;
4654 struct rpc_message msg
= {
4655 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4656 .rpc_cred
= state
->owner
->so_cred
,
4658 struct rpc_task_setup task_setup_data
= {
4659 .rpc_client
= NFS_CLIENT(state
->inode
),
4660 .rpc_message
= &msg
,
4661 .callback_ops
= &nfs4_lock_ops
,
4662 .workqueue
= nfsiod_workqueue
,
4663 .flags
= RPC_TASK_ASYNC
,
4667 dprintk("%s: begin!\n", __func__
);
4668 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4669 fl
->fl_u
.nfs4_fl
.owner
,
4670 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4674 data
->arg
.block
= 1;
4675 if (recovery_type
> NFS_LOCK_NEW
) {
4676 if (recovery_type
== NFS_LOCK_RECLAIM
)
4677 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4678 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4680 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4681 msg
.rpc_argp
= &data
->arg
;
4682 msg
.rpc_resp
= &data
->res
;
4683 task_setup_data
.callback_data
= data
;
4684 task
= rpc_run_task(&task_setup_data
);
4686 return PTR_ERR(task
);
4687 ret
= nfs4_wait_for_completion_rpc_task(task
);
4689 ret
= data
->rpc_status
;
4691 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4692 data
->arg
.new_lock_owner
, ret
);
4694 data
->cancelled
= 1;
4696 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4700 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4702 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4703 struct nfs4_exception exception
= {
4704 .inode
= state
->inode
,
4709 /* Cache the lock if possible... */
4710 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4712 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4713 if (err
!= -NFS4ERR_DELAY
)
4715 nfs4_handle_exception(server
, err
, &exception
);
4716 } while (exception
.retry
);
4720 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4722 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4723 struct nfs4_exception exception
= {
4724 .inode
= state
->inode
,
4728 err
= nfs4_set_lock_state(state
, request
);
4732 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4734 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4738 case -NFS4ERR_GRACE
:
4739 case -NFS4ERR_DELAY
:
4740 nfs4_handle_exception(server
, err
, &exception
);
4743 } while (exception
.retry
);
4748 #if defined(CONFIG_NFS_V4_1)
4750 * nfs41_check_expired_locks - possibly free a lock stateid
4752 * @state: NFSv4 state for an inode
4754 * Returns NFS_OK if recovery for this stateid is now finished.
4755 * Otherwise a negative NFS4ERR value is returned.
4757 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4759 int status
, ret
= -NFS4ERR_BAD_STATEID
;
4760 struct nfs4_lock_state
*lsp
;
4761 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4763 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4764 if (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) {
4765 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4766 if (status
!= NFS_OK
) {
4767 /* Free the stateid unless the server
4768 * informs us the stateid is unrecognized. */
4769 if (status
!= -NFS4ERR_BAD_STATEID
)
4770 nfs41_free_stateid(server
,
4772 lsp
->ls_flags
&= ~NFS_LOCK_INITIALIZED
;
4781 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4783 int status
= NFS_OK
;
4785 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4786 status
= nfs41_check_expired_locks(state
);
4787 if (status
!= NFS_OK
)
4788 status
= nfs4_lock_expired(state
, request
);
4793 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4795 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4796 unsigned char fl_flags
= request
->fl_flags
;
4797 int status
= -ENOLCK
;
4799 if ((fl_flags
& FL_POSIX
) &&
4800 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4802 /* Is this a delegated open? */
4803 status
= nfs4_set_lock_state(state
, request
);
4806 request
->fl_flags
|= FL_ACCESS
;
4807 status
= do_vfs_lock(request
->fl_file
, request
);
4810 down_read(&nfsi
->rwsem
);
4811 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4812 /* Yes: cache locks! */
4813 /* ...but avoid races with delegation recall... */
4814 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4815 status
= do_vfs_lock(request
->fl_file
, request
);
4818 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4821 /* Note: we always want to sleep here! */
4822 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4823 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4824 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4825 "manager!\n", __func__
);
4827 up_read(&nfsi
->rwsem
);
4829 request
->fl_flags
= fl_flags
;
4833 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4835 struct nfs4_exception exception
= {
4837 .inode
= state
->inode
,
4842 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4843 if (err
== -NFS4ERR_DENIED
)
4845 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4847 } while (exception
.retry
);
4852 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4854 struct nfs_open_context
*ctx
;
4855 struct nfs4_state
*state
;
4856 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4859 /* verify open state */
4860 ctx
= nfs_file_open_context(filp
);
4863 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4866 if (IS_GETLK(cmd
)) {
4868 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4872 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4875 if (request
->fl_type
== F_UNLCK
) {
4877 return nfs4_proc_unlck(state
, cmd
, request
);
4884 * Don't rely on the VFS having checked the file open mode,
4885 * since it won't do this for flock() locks.
4887 switch (request
->fl_type
) {
4889 if (!(filp
->f_mode
& FMODE_READ
))
4893 if (!(filp
->f_mode
& FMODE_WRITE
))
4898 status
= nfs4_proc_setlk(state
, cmd
, request
);
4899 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4901 timeout
= nfs4_set_lock_task_retry(timeout
);
4902 status
= -ERESTARTSYS
;
4905 } while(status
< 0);
4909 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4911 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4912 struct nfs4_exception exception
= { };
4915 err
= nfs4_set_lock_state(state
, fl
);
4919 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4922 printk(KERN_ERR
"NFS: %s: unhandled error "
4923 "%d.\n", __func__
, err
);
4927 case -NFS4ERR_EXPIRED
:
4928 nfs4_schedule_stateid_recovery(server
, state
);
4929 case -NFS4ERR_STALE_CLIENTID
:
4930 case -NFS4ERR_STALE_STATEID
:
4931 nfs4_schedule_lease_recovery(server
->nfs_client
);
4933 case -NFS4ERR_BADSESSION
:
4934 case -NFS4ERR_BADSLOT
:
4935 case -NFS4ERR_BAD_HIGH_SLOT
:
4936 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4937 case -NFS4ERR_DEADSESSION
:
4938 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
4942 * The show must go on: exit, but mark the
4943 * stateid as needing recovery.
4945 case -NFS4ERR_DELEG_REVOKED
:
4946 case -NFS4ERR_ADMIN_REVOKED
:
4947 case -NFS4ERR_BAD_STATEID
:
4948 case -NFS4ERR_OPENMODE
:
4949 nfs4_schedule_stateid_recovery(server
, state
);
4954 * User RPCSEC_GSS context has expired.
4955 * We cannot recover this stateid now, so
4956 * skip it and allow recovery thread to
4962 case -NFS4ERR_DENIED
:
4963 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4966 case -NFS4ERR_DELAY
:
4969 err
= nfs4_handle_exception(server
, err
, &exception
);
4970 } while (exception
.retry
);
4975 struct nfs_release_lockowner_data
{
4976 struct nfs4_lock_state
*lsp
;
4977 struct nfs_server
*server
;
4978 struct nfs_release_lockowner_args args
;
4981 static void nfs4_release_lockowner_release(void *calldata
)
4983 struct nfs_release_lockowner_data
*data
= calldata
;
4984 nfs4_free_lock_state(data
->server
, data
->lsp
);
4988 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4989 .rpc_release
= nfs4_release_lockowner_release
,
4992 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
4994 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4995 struct nfs_release_lockowner_data
*data
;
4996 struct rpc_message msg
= {
4997 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5000 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5002 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5006 data
->server
= server
;
5007 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5008 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5009 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5010 msg
.rpc_argp
= &data
->args
;
5011 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5015 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5017 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5018 const void *buf
, size_t buflen
,
5019 int flags
, int type
)
5021 if (strcmp(key
, "") != 0)
5024 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5027 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5028 void *buf
, size_t buflen
, int type
)
5030 if (strcmp(key
, "") != 0)
5033 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5036 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5037 size_t list_len
, const char *name
,
5038 size_t name_len
, int type
)
5040 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5042 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5045 if (list
&& len
<= list_len
)
5046 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5051 * nfs_fhget will use either the mounted_on_fileid or the fileid
5053 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5055 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5056 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5057 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5058 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5061 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5062 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5063 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5067 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5068 const struct qstr
*name
,
5069 struct nfs4_fs_locations
*fs_locations
,
5072 struct nfs_server
*server
= NFS_SERVER(dir
);
5074 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5076 struct nfs4_fs_locations_arg args
= {
5077 .dir_fh
= NFS_FH(dir
),
5082 struct nfs4_fs_locations_res res
= {
5083 .fs_locations
= fs_locations
,
5085 struct rpc_message msg
= {
5086 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5092 dprintk("%s: start\n", __func__
);
5094 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5095 * is not supported */
5096 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5097 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5099 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5101 nfs_fattr_init(&fs_locations
->fattr
);
5102 fs_locations
->server
= server
;
5103 fs_locations
->nlocations
= 0;
5104 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5105 dprintk("%s: returned status = %d\n", __func__
, status
);
5109 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5110 const struct qstr
*name
,
5111 struct nfs4_fs_locations
*fs_locations
,
5114 struct nfs4_exception exception
= { };
5117 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5118 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5120 } while (exception
.retry
);
5124 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5127 struct nfs4_secinfo_arg args
= {
5128 .dir_fh
= NFS_FH(dir
),
5131 struct nfs4_secinfo_res res
= {
5134 struct rpc_message msg
= {
5135 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5140 dprintk("NFS call secinfo %s\n", name
->name
);
5141 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5142 dprintk("NFS reply secinfo: %d\n", status
);
5146 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5147 struct nfs4_secinfo_flavors
*flavors
)
5149 struct nfs4_exception exception
= { };
5152 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5153 _nfs4_proc_secinfo(dir
, name
, flavors
),
5155 } while (exception
.retry
);
5159 #ifdef CONFIG_NFS_V4_1
5161 * Check the exchange flags returned by the server for invalid flags, having
5162 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5165 static int nfs4_check_cl_exchange_flags(u32 flags
)
5167 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5169 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5170 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5172 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5176 return -NFS4ERR_INVAL
;
5180 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5181 struct nfs41_server_scope
*b
)
5183 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5184 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5191 * nfs4_proc_bind_conn_to_session()
5193 * The 4.1 client currently uses the same TCP connection for the
5194 * fore and backchannel.
5196 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5199 struct nfs41_bind_conn_to_session_res res
;
5200 struct rpc_message msg
= {
5202 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5208 dprintk("--> %s\n", __func__
);
5209 BUG_ON(clp
== NULL
);
5211 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5212 if (unlikely(res
.session
== NULL
)) {
5217 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5219 if (memcmp(res
.session
->sess_id
.data
,
5220 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5221 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5225 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5226 dprintk("NFS: %s: Unexpected direction from server\n",
5231 if (res
.use_conn_in_rdma_mode
) {
5232 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5241 dprintk("<-- %s status= %d\n", __func__
, status
);
5246 * nfs4_proc_exchange_id()
5248 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5250 * Since the clientid has expired, all compounds using sessions
5251 * associated with the stale clientid will be returning
5252 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5253 * be in some phase of session reset.
5255 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5257 nfs4_verifier verifier
;
5258 struct nfs41_exchange_id_args args
= {
5259 .verifier
= &verifier
,
5261 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5263 struct nfs41_exchange_id_res res
= {
5267 struct rpc_message msg
= {
5268 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5274 nfs4_init_boot_verifier(clp
, &verifier
);
5275 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
5278 clp
->cl_rpcclient
->cl_nodename
);
5279 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5280 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5281 args
.id_len
, args
.id
);
5283 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5285 if (unlikely(res
.server_owner
== NULL
)) {
5290 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5292 if (unlikely(res
.server_scope
== NULL
)) {
5294 goto out_server_owner
;
5297 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5298 if (unlikely(res
.impl_id
== NULL
)) {
5300 goto out_server_scope
;
5303 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5305 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5308 clp
->cl_clientid
= res
.clientid
;
5309 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5310 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5311 clp
->cl_seqid
= res
.seqid
;
5313 kfree(clp
->cl_serverowner
);
5314 clp
->cl_serverowner
= res
.server_owner
;
5315 res
.server_owner
= NULL
;
5317 /* use the most recent implementation id */
5318 kfree(clp
->cl_implid
);
5319 clp
->cl_implid
= res
.impl_id
;
5321 if (clp
->cl_serverscope
!= NULL
&&
5322 !nfs41_same_server_scope(clp
->cl_serverscope
,
5323 res
.server_scope
)) {
5324 dprintk("%s: server_scope mismatch detected\n",
5326 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5327 kfree(clp
->cl_serverscope
);
5328 clp
->cl_serverscope
= NULL
;
5331 if (clp
->cl_serverscope
== NULL
) {
5332 clp
->cl_serverscope
= res
.server_scope
;
5339 kfree(res
.server_owner
);
5341 kfree(res
.server_scope
);
5343 if (clp
->cl_implid
!= NULL
)
5344 dprintk("NFS reply exchange_id: Server Implementation ID: "
5345 "domain: %s, name: %s, date: %llu,%u\n",
5346 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5347 clp
->cl_implid
->date
.seconds
,
5348 clp
->cl_implid
->date
.nseconds
);
5349 dprintk("NFS reply exchange_id: %d\n", status
);
5353 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5354 struct rpc_cred
*cred
)
5356 struct rpc_message msg
= {
5357 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5363 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5365 dprintk("NFS: Got error %d from the server %s on "
5366 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5370 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5371 struct rpc_cred
*cred
)
5376 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5377 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5379 case -NFS4ERR_DELAY
:
5380 case -NFS4ERR_CLIENTID_BUSY
:
5390 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5392 struct rpc_cred
*cred
;
5395 if (clp
->cl_mvops
->minor_version
< 1)
5397 if (clp
->cl_exchange_flags
== 0)
5399 cred
= nfs4_get_exchange_id_cred(clp
);
5400 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5405 case -NFS4ERR_STALE_CLIENTID
:
5406 clp
->cl_exchange_flags
= 0;
5412 struct nfs4_get_lease_time_data
{
5413 struct nfs4_get_lease_time_args
*args
;
5414 struct nfs4_get_lease_time_res
*res
;
5415 struct nfs_client
*clp
;
5418 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5422 struct nfs4_get_lease_time_data
*data
=
5423 (struct nfs4_get_lease_time_data
*)calldata
;
5425 dprintk("--> %s\n", __func__
);
5426 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5427 /* just setup sequence, do not trigger session recovery
5428 since we're invoked within one */
5429 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
5430 &data
->args
->la_seq_args
,
5431 &data
->res
->lr_seq_res
, task
);
5433 BUG_ON(ret
== -EAGAIN
);
5434 rpc_call_start(task
);
5435 dprintk("<-- %s\n", __func__
);
5439 * Called from nfs4_state_manager thread for session setup, so don't recover
5440 * from sequence operation or clientid errors.
5442 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5444 struct nfs4_get_lease_time_data
*data
=
5445 (struct nfs4_get_lease_time_data
*)calldata
;
5447 dprintk("--> %s\n", __func__
);
5448 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5450 switch (task
->tk_status
) {
5451 case -NFS4ERR_DELAY
:
5452 case -NFS4ERR_GRACE
:
5453 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5454 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5455 task
->tk_status
= 0;
5457 case -NFS4ERR_RETRY_UNCACHED_REP
:
5458 rpc_restart_call_prepare(task
);
5461 dprintk("<-- %s\n", __func__
);
5464 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5465 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5466 .rpc_call_done
= nfs4_get_lease_time_done
,
5469 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5471 struct rpc_task
*task
;
5472 struct nfs4_get_lease_time_args args
;
5473 struct nfs4_get_lease_time_res res
= {
5474 .lr_fsinfo
= fsinfo
,
5476 struct nfs4_get_lease_time_data data
= {
5481 struct rpc_message msg
= {
5482 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5486 struct rpc_task_setup task_setup
= {
5487 .rpc_client
= clp
->cl_rpcclient
,
5488 .rpc_message
= &msg
,
5489 .callback_ops
= &nfs4_get_lease_time_ops
,
5490 .callback_data
= &data
,
5491 .flags
= RPC_TASK_TIMEOUT
,
5495 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5496 dprintk("--> %s\n", __func__
);
5497 task
= rpc_run_task(&task_setup
);
5500 status
= PTR_ERR(task
);
5502 status
= task
->tk_status
;
5505 dprintk("<-- %s return %d\n", __func__
, status
);
5510 static struct nfs4_slot
*nfs4_alloc_slots(u32 max_slots
, gfp_t gfp_flags
)
5512 return kcalloc(max_slots
, sizeof(struct nfs4_slot
), gfp_flags
);
5515 static void nfs4_add_and_init_slots(struct nfs4_slot_table
*tbl
,
5516 struct nfs4_slot
*new,
5520 struct nfs4_slot
*old
= NULL
;
5523 spin_lock(&tbl
->slot_tbl_lock
);
5527 tbl
->max_slots
= max_slots
;
5529 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
5530 for (i
= 0; i
< tbl
->max_slots
; i
++)
5531 tbl
->slots
[i
].seq_nr
= ivalue
;
5532 spin_unlock(&tbl
->slot_tbl_lock
);
5537 * (re)Initialise a slot table
5539 static int nfs4_realloc_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
5542 struct nfs4_slot
*new = NULL
;
5545 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
5546 max_reqs
, tbl
->max_slots
);
5548 /* Does the newly negotiated max_reqs match the existing slot table? */
5549 if (max_reqs
!= tbl
->max_slots
) {
5550 new = nfs4_alloc_slots(max_reqs
, GFP_NOFS
);
5556 nfs4_add_and_init_slots(tbl
, new, max_reqs
, ivalue
);
5557 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5558 tbl
, tbl
->slots
, tbl
->max_slots
);
5560 dprintk("<-- %s: return %d\n", __func__
, ret
);
5564 /* Destroy the slot table */
5565 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
5567 if (session
->fc_slot_table
.slots
!= NULL
) {
5568 kfree(session
->fc_slot_table
.slots
);
5569 session
->fc_slot_table
.slots
= NULL
;
5571 if (session
->bc_slot_table
.slots
!= NULL
) {
5572 kfree(session
->bc_slot_table
.slots
);
5573 session
->bc_slot_table
.slots
= NULL
;
5579 * Initialize or reset the forechannel and backchannel tables
5581 static int nfs4_setup_session_slot_tables(struct nfs4_session
*ses
)
5583 struct nfs4_slot_table
*tbl
;
5586 dprintk("--> %s\n", __func__
);
5588 tbl
= &ses
->fc_slot_table
;
5589 status
= nfs4_realloc_slot_table(tbl
, ses
->fc_attrs
.max_reqs
, 1);
5590 if (status
) /* -ENOMEM */
5593 tbl
= &ses
->bc_slot_table
;
5594 status
= nfs4_realloc_slot_table(tbl
, ses
->bc_attrs
.max_reqs
, 0);
5595 if (status
&& tbl
->slots
== NULL
)
5596 /* Fore and back channel share a connection so get
5597 * both slot tables or neither */
5598 nfs4_destroy_slot_tables(ses
);
5602 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5604 struct nfs4_session
*session
;
5605 struct nfs4_slot_table
*tbl
;
5607 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5611 tbl
= &session
->fc_slot_table
;
5612 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5613 spin_lock_init(&tbl
->slot_tbl_lock
);
5614 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5615 init_completion(&tbl
->complete
);
5617 tbl
= &session
->bc_slot_table
;
5618 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5619 spin_lock_init(&tbl
->slot_tbl_lock
);
5620 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5621 init_completion(&tbl
->complete
);
5623 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5629 void nfs4_destroy_session(struct nfs4_session
*session
)
5631 struct rpc_xprt
*xprt
;
5632 struct rpc_cred
*cred
;
5634 cred
= nfs4_get_exchange_id_cred(session
->clp
);
5635 nfs4_proc_destroy_session(session
, cred
);
5640 xprt
= rcu_dereference(session
->clp
->cl_rpcclient
->cl_xprt
);
5642 dprintk("%s Destroy backchannel for xprt %p\n",
5644 xprt_destroy_backchannel(xprt
, NFS41_BC_MIN_CALLBACKS
);
5645 nfs4_destroy_slot_tables(session
);
5650 * Initialize the values to be used by the client in CREATE_SESSION
5651 * If nfs4_init_session set the fore channel request and response sizes,
5654 * Set the back channel max_resp_sz_cached to zero to force the client to
5655 * always set csa_cachethis to FALSE because the current implementation
5656 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5658 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5660 struct nfs4_session
*session
= args
->client
->cl_session
;
5661 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5662 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5665 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5667 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5668 /* Fore channel attributes */
5669 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5670 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5671 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5672 args
->fc_attrs
.max_reqs
= max_session_slots
;
5674 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5675 "max_ops=%u max_reqs=%u\n",
5677 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5678 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5680 /* Back channel attributes */
5681 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5682 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5683 args
->bc_attrs
.max_resp_sz_cached
= 0;
5684 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5685 args
->bc_attrs
.max_reqs
= 1;
5687 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5688 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5690 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5691 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5692 args
->bc_attrs
.max_reqs
);
5695 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5697 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5698 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5700 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5703 * Our requested max_ops is the minimum we need; we're not
5704 * prepared to break up compounds into smaller pieces than that.
5705 * So, no point even trying to continue if the server won't
5708 if (rcvd
->max_ops
< sent
->max_ops
)
5710 if (rcvd
->max_reqs
== 0)
5712 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5713 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5717 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5719 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5720 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5722 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5724 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5726 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5728 /* These would render the backchannel useless: */
5729 if (rcvd
->max_ops
!= sent
->max_ops
)
5731 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5736 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5737 struct nfs4_session
*session
)
5741 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5744 return nfs4_verify_back_channel_attrs(args
, session
);
5747 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5748 struct rpc_cred
*cred
)
5750 struct nfs4_session
*session
= clp
->cl_session
;
5751 struct nfs41_create_session_args args
= {
5753 .cb_program
= NFS4_CALLBACK
,
5755 struct nfs41_create_session_res res
= {
5758 struct rpc_message msg
= {
5759 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5766 nfs4_init_channel_attrs(&args
);
5767 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5769 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5772 /* Verify the session's negotiated channel_attrs values */
5773 status
= nfs4_verify_channel_attrs(&args
, session
);
5775 /* Increment the clientid slot sequence id */
5783 * Issues a CREATE_SESSION operation to the server.
5784 * It is the responsibility of the caller to verify the session is
5785 * expired before calling this routine.
5787 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5791 struct nfs4_session
*session
= clp
->cl_session
;
5793 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5795 status
= _nfs4_proc_create_session(clp
, cred
);
5799 /* Init or reset the session slot tables */
5800 status
= nfs4_setup_session_slot_tables(session
);
5801 dprintk("slot table setup returned %d\n", status
);
5805 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5806 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5807 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5809 dprintk("<-- %s\n", __func__
);
5814 * Issue the over-the-wire RPC DESTROY_SESSION.
5815 * The caller must serialize access to this routine.
5817 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5818 struct rpc_cred
*cred
)
5820 struct rpc_message msg
= {
5821 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5822 .rpc_argp
= session
,
5827 dprintk("--> nfs4_proc_destroy_session\n");
5829 /* session is still being setup */
5830 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5833 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5836 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5837 "Session has been destroyed regardless...\n", status
);
5839 dprintk("<-- nfs4_proc_destroy_session\n");
5844 * With sessions, the client is not marked ready until after a
5845 * successful EXCHANGE_ID and CREATE_SESSION.
5847 * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate
5848 * other versions of NFS can be tried.
5850 static int nfs41_check_session_ready(struct nfs_client
*clp
)
5854 if (clp
->cl_cons_state
== NFS_CS_SESSION_INITING
) {
5855 ret
= nfs4_client_recover_expired_lease(clp
);
5859 if (clp
->cl_cons_state
< NFS_CS_READY
)
5860 return -EPROTONOSUPPORT
;
5865 int nfs4_init_session(struct nfs_server
*server
)
5867 struct nfs_client
*clp
= server
->nfs_client
;
5868 struct nfs4_session
*session
;
5869 unsigned int rsize
, wsize
;
5871 if (!nfs4_has_session(clp
))
5874 session
= clp
->cl_session
;
5875 spin_lock(&clp
->cl_lock
);
5876 if (test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
)) {
5878 rsize
= server
->rsize
;
5880 rsize
= NFS_MAX_FILE_IO_SIZE
;
5881 wsize
= server
->wsize
;
5883 wsize
= NFS_MAX_FILE_IO_SIZE
;
5885 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5886 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5888 spin_unlock(&clp
->cl_lock
);
5890 return nfs41_check_session_ready(clp
);
5893 int nfs4_init_ds_session(struct nfs_client
*clp
, unsigned long lease_time
)
5895 struct nfs4_session
*session
= clp
->cl_session
;
5898 spin_lock(&clp
->cl_lock
);
5899 if (test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
)) {
5901 * Do not set NFS_CS_CHECK_LEASE_TIME instead set the
5902 * DS lease to be equal to the MDS lease.
5904 clp
->cl_lease_time
= lease_time
;
5905 clp
->cl_last_renewal
= jiffies
;
5907 spin_unlock(&clp
->cl_lock
);
5909 ret
= nfs41_check_session_ready(clp
);
5912 /* Test for the DS role */
5913 if (!is_ds_client(clp
))
5917 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5921 * Renew the cl_session lease.
5923 struct nfs4_sequence_data
{
5924 struct nfs_client
*clp
;
5925 struct nfs4_sequence_args args
;
5926 struct nfs4_sequence_res res
;
5929 static void nfs41_sequence_release(void *data
)
5931 struct nfs4_sequence_data
*calldata
= data
;
5932 struct nfs_client
*clp
= calldata
->clp
;
5934 if (atomic_read(&clp
->cl_count
) > 1)
5935 nfs4_schedule_state_renewal(clp
);
5936 nfs_put_client(clp
);
5940 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5942 switch(task
->tk_status
) {
5943 case -NFS4ERR_DELAY
:
5944 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5947 nfs4_schedule_lease_recovery(clp
);
5952 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5954 struct nfs4_sequence_data
*calldata
= data
;
5955 struct nfs_client
*clp
= calldata
->clp
;
5957 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5960 if (task
->tk_status
< 0) {
5961 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5962 if (atomic_read(&clp
->cl_count
) == 1)
5965 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5966 rpc_restart_call_prepare(task
);
5970 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5972 dprintk("<-- %s\n", __func__
);
5975 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5977 struct nfs4_sequence_data
*calldata
= data
;
5978 struct nfs_client
*clp
= calldata
->clp
;
5979 struct nfs4_sequence_args
*args
;
5980 struct nfs4_sequence_res
*res
;
5982 args
= task
->tk_msg
.rpc_argp
;
5983 res
= task
->tk_msg
.rpc_resp
;
5985 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
))
5987 rpc_call_start(task
);
5990 static const struct rpc_call_ops nfs41_sequence_ops
= {
5991 .rpc_call_done
= nfs41_sequence_call_done
,
5992 .rpc_call_prepare
= nfs41_sequence_prepare
,
5993 .rpc_release
= nfs41_sequence_release
,
5996 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5998 struct nfs4_sequence_data
*calldata
;
5999 struct rpc_message msg
= {
6000 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6003 struct rpc_task_setup task_setup_data
= {
6004 .rpc_client
= clp
->cl_rpcclient
,
6005 .rpc_message
= &msg
,
6006 .callback_ops
= &nfs41_sequence_ops
,
6007 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
6010 if (!atomic_inc_not_zero(&clp
->cl_count
))
6011 return ERR_PTR(-EIO
);
6012 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6013 if (calldata
== NULL
) {
6014 nfs_put_client(clp
);
6015 return ERR_PTR(-ENOMEM
);
6017 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6018 msg
.rpc_argp
= &calldata
->args
;
6019 msg
.rpc_resp
= &calldata
->res
;
6020 calldata
->clp
= clp
;
6021 task_setup_data
.callback_data
= calldata
;
6023 return rpc_run_task(&task_setup_data
);
6026 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6028 struct rpc_task
*task
;
6031 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6033 task
= _nfs41_proc_sequence(clp
, cred
);
6035 ret
= PTR_ERR(task
);
6037 rpc_put_task_async(task
);
6038 dprintk("<-- %s status=%d\n", __func__
, ret
);
6042 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6044 struct rpc_task
*task
;
6047 task
= _nfs41_proc_sequence(clp
, cred
);
6049 ret
= PTR_ERR(task
);
6052 ret
= rpc_wait_for_completion_task(task
);
6054 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6056 if (task
->tk_status
== 0)
6057 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6058 ret
= task
->tk_status
;
6062 dprintk("<-- %s status=%d\n", __func__
, ret
);
6066 struct nfs4_reclaim_complete_data
{
6067 struct nfs_client
*clp
;
6068 struct nfs41_reclaim_complete_args arg
;
6069 struct nfs41_reclaim_complete_res res
;
6072 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6074 struct nfs4_reclaim_complete_data
*calldata
= data
;
6076 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
6077 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
6078 &calldata
->arg
.seq_args
,
6079 &calldata
->res
.seq_res
, task
))
6082 rpc_call_start(task
);
6085 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6087 switch(task
->tk_status
) {
6089 case -NFS4ERR_COMPLETE_ALREADY
:
6090 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6092 case -NFS4ERR_DELAY
:
6093 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6095 case -NFS4ERR_RETRY_UNCACHED_REP
:
6098 nfs4_schedule_lease_recovery(clp
);
6103 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6105 struct nfs4_reclaim_complete_data
*calldata
= data
;
6106 struct nfs_client
*clp
= calldata
->clp
;
6107 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6109 dprintk("--> %s\n", __func__
);
6110 if (!nfs41_sequence_done(task
, res
))
6113 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6114 rpc_restart_call_prepare(task
);
6117 dprintk("<-- %s\n", __func__
);
6120 static void nfs4_free_reclaim_complete_data(void *data
)
6122 struct nfs4_reclaim_complete_data
*calldata
= data
;
6127 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6128 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6129 .rpc_call_done
= nfs4_reclaim_complete_done
,
6130 .rpc_release
= nfs4_free_reclaim_complete_data
,
6134 * Issue a global reclaim complete.
6136 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6138 struct nfs4_reclaim_complete_data
*calldata
;
6139 struct rpc_task
*task
;
6140 struct rpc_message msg
= {
6141 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6143 struct rpc_task_setup task_setup_data
= {
6144 .rpc_client
= clp
->cl_rpcclient
,
6145 .rpc_message
= &msg
,
6146 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6147 .flags
= RPC_TASK_ASYNC
,
6149 int status
= -ENOMEM
;
6151 dprintk("--> %s\n", __func__
);
6152 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6153 if (calldata
== NULL
)
6155 calldata
->clp
= clp
;
6156 calldata
->arg
.one_fs
= 0;
6158 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6159 msg
.rpc_argp
= &calldata
->arg
;
6160 msg
.rpc_resp
= &calldata
->res
;
6161 task_setup_data
.callback_data
= calldata
;
6162 task
= rpc_run_task(&task_setup_data
);
6164 status
= PTR_ERR(task
);
6167 status
= nfs4_wait_for_completion_rpc_task(task
);
6169 status
= task
->tk_status
;
6173 dprintk("<-- %s status=%d\n", __func__
, status
);
6178 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6180 struct nfs4_layoutget
*lgp
= calldata
;
6181 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6183 dprintk("--> %s\n", __func__
);
6184 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6185 * right now covering the LAYOUTGET we are about to send.
6186 * However, that is not so catastrophic, and there seems
6187 * to be no way to prevent it completely.
6189 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
6190 &lgp
->res
.seq_res
, task
))
6192 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6193 NFS_I(lgp
->args
.inode
)->layout
,
6194 lgp
->args
.ctx
->state
)) {
6195 rpc_exit(task
, NFS4_OK
);
6198 rpc_call_start(task
);
6201 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6203 struct nfs4_layoutget
*lgp
= calldata
;
6204 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6206 dprintk("--> %s\n", __func__
);
6208 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
6211 switch (task
->tk_status
) {
6214 case -NFS4ERR_LAYOUTTRYLATER
:
6215 case -NFS4ERR_RECALLCONFLICT
:
6216 task
->tk_status
= -NFS4ERR_DELAY
;
6219 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6220 rpc_restart_call_prepare(task
);
6224 dprintk("<-- %s\n", __func__
);
6227 static size_t max_response_pages(struct nfs_server
*server
)
6229 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6230 return nfs_page_array_len(0, max_resp_sz
);
6233 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6240 for (i
= 0; i
< size
; i
++) {
6243 __free_page(pages
[i
]);
6248 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6250 struct page
**pages
;
6253 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6255 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6259 for (i
= 0; i
< size
; i
++) {
6260 pages
[i
] = alloc_page(gfp_flags
);
6262 dprintk("%s: failed to allocate page\n", __func__
);
6263 nfs4_free_pages(pages
, size
);
6271 static void nfs4_layoutget_release(void *calldata
)
6273 struct nfs4_layoutget
*lgp
= calldata
;
6274 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6275 size_t max_pages
= max_response_pages(server
);
6277 dprintk("--> %s\n", __func__
);
6278 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6279 put_nfs_open_context(lgp
->args
.ctx
);
6281 dprintk("<-- %s\n", __func__
);
6284 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6285 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6286 .rpc_call_done
= nfs4_layoutget_done
,
6287 .rpc_release
= nfs4_layoutget_release
,
6290 void nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6292 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6293 size_t max_pages
= max_response_pages(server
);
6294 struct rpc_task
*task
;
6295 struct rpc_message msg
= {
6296 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6297 .rpc_argp
= &lgp
->args
,
6298 .rpc_resp
= &lgp
->res
,
6300 struct rpc_task_setup task_setup_data
= {
6301 .rpc_client
= server
->client
,
6302 .rpc_message
= &msg
,
6303 .callback_ops
= &nfs4_layoutget_call_ops
,
6304 .callback_data
= lgp
,
6305 .flags
= RPC_TASK_ASYNC
,
6309 dprintk("--> %s\n", __func__
);
6311 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6312 if (!lgp
->args
.layout
.pages
) {
6313 nfs4_layoutget_release(lgp
);
6316 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6318 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6319 lgp
->res
.seq_res
.sr_slot
= NULL
;
6320 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6321 task
= rpc_run_task(&task_setup_data
);
6324 status
= nfs4_wait_for_completion_rpc_task(task
);
6326 status
= task
->tk_status
;
6328 status
= pnfs_layout_process(lgp
);
6330 dprintk("<-- %s status=%d\n", __func__
, status
);
6335 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6337 struct nfs4_layoutreturn
*lrp
= calldata
;
6339 dprintk("--> %s\n", __func__
);
6340 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
6341 &lrp
->res
.seq_res
, task
))
6343 rpc_call_start(task
);
6346 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6348 struct nfs4_layoutreturn
*lrp
= calldata
;
6349 struct nfs_server
*server
;
6350 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6352 dprintk("--> %s\n", __func__
);
6354 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
6357 server
= NFS_SERVER(lrp
->args
.inode
);
6358 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6359 rpc_restart_call_prepare(task
);
6362 spin_lock(&lo
->plh_inode
->i_lock
);
6363 if (task
->tk_status
== 0 && lrp
->res
.lrs_present
)
6364 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6365 lo
->plh_block_lgets
--;
6366 spin_unlock(&lo
->plh_inode
->i_lock
);
6367 dprintk("<-- %s\n", __func__
);
6370 static void nfs4_layoutreturn_release(void *calldata
)
6372 struct nfs4_layoutreturn
*lrp
= calldata
;
6374 dprintk("--> %s\n", __func__
);
6375 put_layout_hdr(lrp
->args
.layout
);
6377 dprintk("<-- %s\n", __func__
);
6380 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6381 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6382 .rpc_call_done
= nfs4_layoutreturn_done
,
6383 .rpc_release
= nfs4_layoutreturn_release
,
6386 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6388 struct rpc_task
*task
;
6389 struct rpc_message msg
= {
6390 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6391 .rpc_argp
= &lrp
->args
,
6392 .rpc_resp
= &lrp
->res
,
6394 struct rpc_task_setup task_setup_data
= {
6395 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6396 .rpc_message
= &msg
,
6397 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6398 .callback_data
= lrp
,
6402 dprintk("--> %s\n", __func__
);
6403 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6404 task
= rpc_run_task(&task_setup_data
);
6406 return PTR_ERR(task
);
6407 status
= task
->tk_status
;
6408 dprintk("<-- %s status=%d\n", __func__
, status
);
6414 * Retrieve the list of Data Server devices from the MDS.
6416 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6417 const struct nfs_fh
*fh
,
6418 struct pnfs_devicelist
*devlist
)
6420 struct nfs4_getdevicelist_args args
= {
6422 .layoutclass
= server
->pnfs_curr_ld
->id
,
6424 struct nfs4_getdevicelist_res res
= {
6427 struct rpc_message msg
= {
6428 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6434 dprintk("--> %s\n", __func__
);
6435 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6437 dprintk("<-- %s status=%d\n", __func__
, status
);
6441 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6442 const struct nfs_fh
*fh
,
6443 struct pnfs_devicelist
*devlist
)
6445 struct nfs4_exception exception
= { };
6449 err
= nfs4_handle_exception(server
,
6450 _nfs4_getdevicelist(server
, fh
, devlist
),
6452 } while (exception
.retry
);
6454 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6455 err
, devlist
->num_devs
);
6459 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6462 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6464 struct nfs4_getdeviceinfo_args args
= {
6467 struct nfs4_getdeviceinfo_res res
= {
6470 struct rpc_message msg
= {
6471 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6477 dprintk("--> %s\n", __func__
);
6478 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6479 dprintk("<-- %s status=%d\n", __func__
, status
);
6484 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6486 struct nfs4_exception exception
= { };
6490 err
= nfs4_handle_exception(server
,
6491 _nfs4_proc_getdeviceinfo(server
, pdev
),
6493 } while (exception
.retry
);
6496 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6498 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6500 struct nfs4_layoutcommit_data
*data
= calldata
;
6501 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6503 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
6504 &data
->res
.seq_res
, task
))
6506 rpc_call_start(task
);
6510 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6512 struct nfs4_layoutcommit_data
*data
= calldata
;
6513 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6515 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6518 switch (task
->tk_status
) { /* Just ignore these failures */
6519 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6520 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6521 case -NFS4ERR_BADLAYOUT
: /* no layout */
6522 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6523 task
->tk_status
= 0;
6526 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6530 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6531 rpc_restart_call_prepare(task
);
6537 static void nfs4_layoutcommit_release(void *calldata
)
6539 struct nfs4_layoutcommit_data
*data
= calldata
;
6540 struct pnfs_layout_segment
*lseg
, *tmp
;
6541 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
6543 pnfs_cleanup_layoutcommit(data
);
6544 /* Matched by references in pnfs_set_layoutcommit */
6545 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
6546 list_del_init(&lseg
->pls_lc_list
);
6547 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
6552 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
6553 smp_mb__after_clear_bit();
6554 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
6556 put_rpccred(data
->cred
);
6560 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6561 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6562 .rpc_call_done
= nfs4_layoutcommit_done
,
6563 .rpc_release
= nfs4_layoutcommit_release
,
6567 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6569 struct rpc_message msg
= {
6570 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6571 .rpc_argp
= &data
->args
,
6572 .rpc_resp
= &data
->res
,
6573 .rpc_cred
= data
->cred
,
6575 struct rpc_task_setup task_setup_data
= {
6576 .task
= &data
->task
,
6577 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6578 .rpc_message
= &msg
,
6579 .callback_ops
= &nfs4_layoutcommit_ops
,
6580 .callback_data
= data
,
6581 .flags
= RPC_TASK_ASYNC
,
6583 struct rpc_task
*task
;
6586 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6587 "lbw: %llu inode %lu\n",
6588 data
->task
.tk_pid
, sync
,
6589 data
->args
.lastbytewritten
,
6590 data
->args
.inode
->i_ino
);
6592 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6593 task
= rpc_run_task(&task_setup_data
);
6595 return PTR_ERR(task
);
6598 status
= nfs4_wait_for_completion_rpc_task(task
);
6601 status
= task
->tk_status
;
6603 dprintk("%s: status %d\n", __func__
, status
);
6609 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6610 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6612 struct nfs41_secinfo_no_name_args args
= {
6613 .style
= SECINFO_STYLE_CURRENT_FH
,
6615 struct nfs4_secinfo_res res
= {
6618 struct rpc_message msg
= {
6619 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6623 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6627 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6628 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6630 struct nfs4_exception exception
= { };
6633 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6636 case -NFS4ERR_WRONGSEC
:
6637 case -NFS4ERR_NOTSUPP
:
6640 err
= nfs4_handle_exception(server
, err
, &exception
);
6642 } while (exception
.retry
);
6648 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6649 struct nfs_fsinfo
*info
)
6653 rpc_authflavor_t flavor
;
6654 struct nfs4_secinfo_flavors
*flavors
;
6656 page
= alloc_page(GFP_KERNEL
);
6662 flavors
= page_address(page
);
6663 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6666 * Fall back on "guess and check" method if
6667 * the server doesn't support SECINFO_NO_NAME
6669 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6670 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6676 flavor
= nfs_find_best_sec(flavors
);
6678 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6688 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6691 struct nfs41_test_stateid_args args
= {
6694 struct nfs41_test_stateid_res res
;
6695 struct rpc_message msg
= {
6696 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6701 dprintk("NFS call test_stateid %p\n", stateid
);
6702 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6703 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6704 if (status
!= NFS_OK
) {
6705 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6708 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6713 * nfs41_test_stateid - perform a TEST_STATEID operation
6715 * @server: server / transport on which to perform the operation
6716 * @stateid: state ID to test
6718 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6719 * Otherwise a negative NFS4ERR value is returned if the operation
6720 * failed or the state ID is not currently valid.
6722 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6724 struct nfs4_exception exception
= { };
6727 err
= _nfs41_test_stateid(server
, stateid
);
6728 if (err
!= -NFS4ERR_DELAY
)
6730 nfs4_handle_exception(server
, err
, &exception
);
6731 } while (exception
.retry
);
6735 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6737 struct nfs41_free_stateid_args args
= {
6740 struct nfs41_free_stateid_res res
;
6741 struct rpc_message msg
= {
6742 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6748 dprintk("NFS call free_stateid %p\n", stateid
);
6749 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6750 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6751 &args
.seq_args
, &res
.seq_res
, 1);
6752 dprintk("NFS reply free_stateid: %d\n", status
);
6757 * nfs41_free_stateid - perform a FREE_STATEID operation
6759 * @server: server / transport on which to perform the operation
6760 * @stateid: state ID to release
6762 * Returns NFS_OK if the server freed "stateid". Otherwise a
6763 * negative NFS4ERR value is returned.
6765 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6767 struct nfs4_exception exception
= { };
6770 err
= _nfs4_free_stateid(server
, stateid
);
6771 if (err
!= -NFS4ERR_DELAY
)
6773 nfs4_handle_exception(server
, err
, &exception
);
6774 } while (exception
.retry
);
6778 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6779 const nfs4_stateid
*s2
)
6781 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6784 if (s1
->seqid
== s2
->seqid
)
6786 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6792 #endif /* CONFIG_NFS_V4_1 */
6794 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6795 const nfs4_stateid
*s2
)
6797 return nfs4_stateid_match(s1
, s2
);
6801 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6802 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6803 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6804 .recover_open
= nfs4_open_reclaim
,
6805 .recover_lock
= nfs4_lock_reclaim
,
6806 .establish_clid
= nfs4_init_clientid
,
6807 .get_clid_cred
= nfs4_get_setclientid_cred
,
6810 #if defined(CONFIG_NFS_V4_1)
6811 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6812 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6813 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6814 .recover_open
= nfs4_open_reclaim
,
6815 .recover_lock
= nfs4_lock_reclaim
,
6816 .establish_clid
= nfs41_init_clientid
,
6817 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6818 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6820 #endif /* CONFIG_NFS_V4_1 */
6822 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6823 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6824 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6825 .recover_open
= nfs4_open_expired
,
6826 .recover_lock
= nfs4_lock_expired
,
6827 .establish_clid
= nfs4_init_clientid
,
6828 .get_clid_cred
= nfs4_get_setclientid_cred
,
6831 #if defined(CONFIG_NFS_V4_1)
6832 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6833 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6834 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6835 .recover_open
= nfs41_open_expired
,
6836 .recover_lock
= nfs41_lock_expired
,
6837 .establish_clid
= nfs41_init_clientid
,
6838 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6840 #endif /* CONFIG_NFS_V4_1 */
6842 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6843 .sched_state_renewal
= nfs4_proc_async_renew
,
6844 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6845 .renew_lease
= nfs4_proc_renew
,
6848 #if defined(CONFIG_NFS_V4_1)
6849 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6850 .sched_state_renewal
= nfs41_proc_async_sequence
,
6851 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6852 .renew_lease
= nfs4_proc_sequence
,
6856 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6858 .call_sync
= _nfs4_call_sync
,
6859 .match_stateid
= nfs4_match_stateid
,
6860 .find_root_sec
= nfs4_find_root_sec
,
6861 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6862 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6863 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6866 #if defined(CONFIG_NFS_V4_1)
6867 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6869 .call_sync
= _nfs4_call_sync_session
,
6870 .match_stateid
= nfs41_match_stateid
,
6871 .find_root_sec
= nfs41_find_root_sec
,
6872 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6873 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6874 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6878 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6879 [0] = &nfs_v4_0_minor_ops
,
6880 #if defined(CONFIG_NFS_V4_1)
6881 [1] = &nfs_v4_1_minor_ops
,
6885 const struct inode_operations nfs4_dir_inode_operations
= {
6886 .create
= nfs_create
,
6887 .lookup
= nfs_lookup
,
6888 .atomic_open
= nfs_atomic_open
,
6890 .unlink
= nfs_unlink
,
6891 .symlink
= nfs_symlink
,
6895 .rename
= nfs_rename
,
6896 .permission
= nfs_permission
,
6897 .getattr
= nfs_getattr
,
6898 .setattr
= nfs_setattr
,
6899 .getxattr
= generic_getxattr
,
6900 .setxattr
= generic_setxattr
,
6901 .listxattr
= generic_listxattr
,
6902 .removexattr
= generic_removexattr
,
6905 static const struct inode_operations nfs4_file_inode_operations
= {
6906 .permission
= nfs_permission
,
6907 .getattr
= nfs_getattr
,
6908 .setattr
= nfs_setattr
,
6909 .getxattr
= generic_getxattr
,
6910 .setxattr
= generic_setxattr
,
6911 .listxattr
= generic_listxattr
,
6912 .removexattr
= generic_removexattr
,
6915 const struct nfs_rpc_ops nfs_v4_clientops
= {
6916 .version
= 4, /* protocol version */
6917 .dentry_ops
= &nfs4_dentry_operations
,
6918 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6919 .file_inode_ops
= &nfs4_file_inode_operations
,
6920 .file_ops
= &nfs4_file_operations
,
6921 .getroot
= nfs4_proc_get_root
,
6922 .submount
= nfs4_submount
,
6923 .try_mount
= nfs4_try_mount
,
6924 .getattr
= nfs4_proc_getattr
,
6925 .setattr
= nfs4_proc_setattr
,
6926 .lookup
= nfs4_proc_lookup
,
6927 .access
= nfs4_proc_access
,
6928 .readlink
= nfs4_proc_readlink
,
6929 .create
= nfs4_proc_create
,
6930 .remove
= nfs4_proc_remove
,
6931 .unlink_setup
= nfs4_proc_unlink_setup
,
6932 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
6933 .unlink_done
= nfs4_proc_unlink_done
,
6934 .rename
= nfs4_proc_rename
,
6935 .rename_setup
= nfs4_proc_rename_setup
,
6936 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
6937 .rename_done
= nfs4_proc_rename_done
,
6938 .link
= nfs4_proc_link
,
6939 .symlink
= nfs4_proc_symlink
,
6940 .mkdir
= nfs4_proc_mkdir
,
6941 .rmdir
= nfs4_proc_remove
,
6942 .readdir
= nfs4_proc_readdir
,
6943 .mknod
= nfs4_proc_mknod
,
6944 .statfs
= nfs4_proc_statfs
,
6945 .fsinfo
= nfs4_proc_fsinfo
,
6946 .pathconf
= nfs4_proc_pathconf
,
6947 .set_capabilities
= nfs4_server_capabilities
,
6948 .decode_dirent
= nfs4_decode_dirent
,
6949 .read_setup
= nfs4_proc_read_setup
,
6950 .read_pageio_init
= pnfs_pageio_init_read
,
6951 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
6952 .read_done
= nfs4_read_done
,
6953 .write_setup
= nfs4_proc_write_setup
,
6954 .write_pageio_init
= pnfs_pageio_init_write
,
6955 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
6956 .write_done
= nfs4_write_done
,
6957 .commit_setup
= nfs4_proc_commit_setup
,
6958 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
6959 .commit_done
= nfs4_commit_done
,
6960 .lock
= nfs4_proc_lock
,
6961 .clear_acl_cache
= nfs4_zap_acl_attr
,
6962 .close_context
= nfs4_close_context
,
6963 .open_context
= nfs4_atomic_open
,
6964 .have_delegation
= nfs4_have_delegation
,
6965 .return_delegation
= nfs4_inode_return_delegation
,
6966 .alloc_client
= nfs4_alloc_client
,
6967 .init_client
= nfs4_init_client
,
6968 .free_client
= nfs4_free_client
,
6969 .create_server
= nfs4_create_server
,
6970 .clone_server
= nfs_clone_server
,
6973 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6974 .prefix
= XATTR_NAME_NFSV4_ACL
,
6975 .list
= nfs4_xattr_list_nfs4_acl
,
6976 .get
= nfs4_xattr_get_nfs4_acl
,
6977 .set
= nfs4_xattr_set_nfs4_acl
,
6980 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6981 &nfs4_xattr_nfs4_acl_handler
,