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/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4session.h"
69 #define NFSDBG_FACILITY NFSDBG_PROC
71 #define NFS4_POLL_RETRY_MIN (HZ/10)
72 #define NFS4_POLL_RETRY_MAX (15*HZ)
75 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
76 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
77 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
78 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
79 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
80 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*);
81 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
82 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
83 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
84 struct nfs4_state
*state
);
85 #ifdef CONFIG_NFS_V4_1
86 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*);
87 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*);
89 /* Prevent leaks of NFSv4 errors into userland */
90 static int nfs4_map_errors(int err
)
95 case -NFS4ERR_RESOURCE
:
96 case -NFS4ERR_LAYOUTTRYLATER
:
97 case -NFS4ERR_RECALLCONFLICT
:
99 case -NFS4ERR_WRONGSEC
:
101 case -NFS4ERR_BADOWNER
:
102 case -NFS4ERR_BADNAME
:
104 case -NFS4ERR_SHARE_DENIED
:
106 case -NFS4ERR_MINOR_VERS_MISMATCH
:
107 return -EPROTONOSUPPORT
;
108 case -NFS4ERR_ACCESS
:
110 case -NFS4ERR_FILE_OPEN
:
113 dprintk("%s could not handle NFSv4 error %d\n",
121 * This is our standard bitmap for GETATTR requests.
123 const u32 nfs4_fattr_bitmap
[3] = {
125 | FATTR4_WORD0_CHANGE
128 | FATTR4_WORD0_FILEID
,
130 | FATTR4_WORD1_NUMLINKS
132 | FATTR4_WORD1_OWNER_GROUP
133 | FATTR4_WORD1_RAWDEV
134 | FATTR4_WORD1_SPACE_USED
135 | FATTR4_WORD1_TIME_ACCESS
136 | FATTR4_WORD1_TIME_METADATA
137 | FATTR4_WORD1_TIME_MODIFY
140 static const u32 nfs4_pnfs_open_bitmap
[3] = {
142 | FATTR4_WORD0_CHANGE
145 | FATTR4_WORD0_FILEID
,
147 | FATTR4_WORD1_NUMLINKS
149 | FATTR4_WORD1_OWNER_GROUP
150 | FATTR4_WORD1_RAWDEV
151 | FATTR4_WORD1_SPACE_USED
152 | FATTR4_WORD1_TIME_ACCESS
153 | FATTR4_WORD1_TIME_METADATA
154 | FATTR4_WORD1_TIME_MODIFY
,
155 FATTR4_WORD2_MDSTHRESHOLD
158 static const u32 nfs4_open_noattr_bitmap
[3] = {
160 | FATTR4_WORD0_CHANGE
161 | FATTR4_WORD0_FILEID
,
164 const u32 nfs4_statfs_bitmap
[2] = {
165 FATTR4_WORD0_FILES_AVAIL
166 | FATTR4_WORD0_FILES_FREE
167 | FATTR4_WORD0_FILES_TOTAL
,
168 FATTR4_WORD1_SPACE_AVAIL
169 | FATTR4_WORD1_SPACE_FREE
170 | FATTR4_WORD1_SPACE_TOTAL
173 const u32 nfs4_pathconf_bitmap
[2] = {
175 | FATTR4_WORD0_MAXNAME
,
179 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
180 | FATTR4_WORD0_MAXREAD
181 | FATTR4_WORD0_MAXWRITE
182 | FATTR4_WORD0_LEASE_TIME
,
183 FATTR4_WORD1_TIME_DELTA
184 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
185 FATTR4_WORD2_LAYOUT_BLKSIZE
188 const u32 nfs4_fs_locations_bitmap
[2] = {
190 | FATTR4_WORD0_CHANGE
193 | FATTR4_WORD0_FILEID
194 | FATTR4_WORD0_FS_LOCATIONS
,
196 | FATTR4_WORD1_NUMLINKS
198 | FATTR4_WORD1_OWNER_GROUP
199 | FATTR4_WORD1_RAWDEV
200 | FATTR4_WORD1_SPACE_USED
201 | FATTR4_WORD1_TIME_ACCESS
202 | FATTR4_WORD1_TIME_METADATA
203 | FATTR4_WORD1_TIME_MODIFY
204 | FATTR4_WORD1_MOUNTED_ON_FILEID
207 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
208 struct nfs4_readdir_arg
*readdir
)
213 readdir
->cookie
= cookie
;
214 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
219 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
224 * NFSv4 servers do not return entries for '.' and '..'
225 * Therefore, we fake these entries here. We let '.'
226 * have cookie 0 and '..' have cookie 1. Note that
227 * when talking to the server, we always send cookie 0
230 start
= p
= kmap_atomic(*readdir
->pages
);
233 *p
++ = xdr_one
; /* next */
234 *p
++ = xdr_zero
; /* cookie, first word */
235 *p
++ = xdr_one
; /* cookie, second word */
236 *p
++ = xdr_one
; /* entry len */
237 memcpy(p
, ".\0\0\0", 4); /* entry */
239 *p
++ = xdr_one
; /* bitmap length */
240 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
241 *p
++ = htonl(8); /* attribute buffer length */
242 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
245 *p
++ = xdr_one
; /* next */
246 *p
++ = xdr_zero
; /* cookie, first word */
247 *p
++ = xdr_two
; /* cookie, second word */
248 *p
++ = xdr_two
; /* entry len */
249 memcpy(p
, "..\0\0", 4); /* entry */
251 *p
++ = xdr_one
; /* bitmap length */
252 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
253 *p
++ = htonl(8); /* attribute buffer length */
254 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
256 readdir
->pgbase
= (char *)p
- (char *)start
;
257 readdir
->count
-= readdir
->pgbase
;
258 kunmap_atomic(start
);
261 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
268 *timeout
= NFS4_POLL_RETRY_MIN
;
269 if (*timeout
> NFS4_POLL_RETRY_MAX
)
270 *timeout
= NFS4_POLL_RETRY_MAX
;
271 freezable_schedule_timeout_killable(*timeout
);
272 if (fatal_signal_pending(current
))
278 /* This is the error handling routine for processes that are allowed
281 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
283 struct nfs_client
*clp
= server
->nfs_client
;
284 struct nfs4_state
*state
= exception
->state
;
285 struct inode
*inode
= exception
->inode
;
288 exception
->retry
= 0;
292 case -NFS4ERR_OPENMODE
:
293 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
294 nfs4_inode_return_delegation(inode
);
295 exception
->retry
= 1;
300 ret
= nfs4_schedule_stateid_recovery(server
, state
);
303 goto wait_on_recovery
;
304 case -NFS4ERR_DELEG_REVOKED
:
305 case -NFS4ERR_ADMIN_REVOKED
:
306 case -NFS4ERR_BAD_STATEID
:
309 nfs_remove_bad_delegation(state
->inode
);
310 ret
= nfs4_schedule_stateid_recovery(server
, state
);
313 goto wait_on_recovery
;
314 case -NFS4ERR_EXPIRED
:
316 ret
= nfs4_schedule_stateid_recovery(server
, state
);
320 case -NFS4ERR_STALE_STATEID
:
321 case -NFS4ERR_STALE_CLIENTID
:
322 nfs4_schedule_lease_recovery(clp
);
323 goto wait_on_recovery
;
324 #if defined(CONFIG_NFS_V4_1)
325 case -NFS4ERR_BADSESSION
:
326 case -NFS4ERR_BADSLOT
:
327 case -NFS4ERR_BAD_HIGH_SLOT
:
328 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
329 case -NFS4ERR_DEADSESSION
:
330 case -NFS4ERR_SEQ_FALSE_RETRY
:
331 case -NFS4ERR_SEQ_MISORDERED
:
332 dprintk("%s ERROR: %d Reset session\n", __func__
,
334 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
335 goto wait_on_recovery
;
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
347 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
350 case -NFS4ERR_RETRY_UNCACHED_REP
:
351 case -NFS4ERR_OLD_STATEID
:
352 exception
->retry
= 1;
354 case -NFS4ERR_BADOWNER
:
355 /* The following works around a Linux server bug! */
356 case -NFS4ERR_BADNAME
:
357 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
358 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
359 exception
->retry
= 1;
360 printk(KERN_WARNING
"NFS: v4 server %s "
361 "does not accept raw "
363 "Reenabling the idmapper.\n",
364 server
->nfs_client
->cl_hostname
);
367 /* We failed to handle the error */
368 return nfs4_map_errors(ret
);
370 ret
= nfs4_wait_clnt_recover(clp
);
372 exception
->retry
= 1;
377 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
379 spin_lock(&clp
->cl_lock
);
380 if (time_before(clp
->cl_last_renewal
,timestamp
))
381 clp
->cl_last_renewal
= timestamp
;
382 spin_unlock(&clp
->cl_lock
);
385 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
387 do_renew_lease(server
->nfs_client
, timestamp
);
390 #if defined(CONFIG_NFS_V4_1)
392 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
394 struct nfs4_session
*session
;
395 struct nfs4_slot_table
*tbl
;
396 bool send_new_highest_used_slotid
= false;
399 /* just wake up the next guy waiting since
400 * we may have not consumed a slot after all */
401 dprintk("%s: No slot\n", __func__
);
404 tbl
= res
->sr_slot
->table
;
405 session
= tbl
->session
;
407 spin_lock(&tbl
->slot_tbl_lock
);
408 /* Be nice to the server: try to ensure that the last transmitted
409 * value for highest_user_slotid <= target_highest_slotid
411 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
412 send_new_highest_used_slotid
= true;
414 if (nfs41_wake_and_assign_slot(tbl
, res
->sr_slot
)) {
415 send_new_highest_used_slotid
= false;
418 nfs4_free_slot(tbl
, res
->sr_slot
);
420 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
421 send_new_highest_used_slotid
= false;
423 spin_unlock(&tbl
->slot_tbl_lock
);
425 if (send_new_highest_used_slotid
)
426 nfs41_server_notify_highest_slotid_update(session
->clp
);
429 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
431 struct nfs4_session
*session
;
432 struct nfs4_slot
*slot
;
433 struct nfs_client
*clp
;
434 bool interrupted
= false;
437 /* don't increment the sequence number if the task wasn't sent */
438 if (!RPC_WAS_SENT(task
))
442 session
= slot
->table
->session
;
444 if (slot
->interrupted
) {
445 slot
->interrupted
= 0;
449 /* Check the SEQUENCE operation status */
450 switch (res
->sr_status
) {
452 /* Update the slot's sequence and clientid lease timer */
455 do_renew_lease(clp
, res
->sr_timestamp
);
456 /* Check sequence flags */
457 if (res
->sr_status_flags
!= 0)
458 nfs4_schedule_lease_recovery(clp
);
459 nfs41_update_target_slotid(slot
->table
, slot
, res
);
463 * sr_status remains 1 if an RPC level error occurred.
464 * The server may or may not have processed the sequence
466 * Mark the slot as having hosted an interrupted RPC call.
468 slot
->interrupted
= 1;
471 /* The server detected a resend of the RPC call and
472 * returned NFS4ERR_DELAY as per Section 2.10.6.2
475 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
480 case -NFS4ERR_BADSLOT
:
482 * The slot id we used was probably retired. Try again
483 * using a different slot id.
486 case -NFS4ERR_SEQ_MISORDERED
:
488 * Was the last operation on this sequence interrupted?
489 * If so, retry after bumping the sequence number.
496 * Could this slot have been previously retired?
497 * If so, then the server may be expecting seq_nr = 1!
499 if (slot
->seq_nr
!= 1) {
504 case -NFS4ERR_SEQ_FALSE_RETRY
:
508 /* Just update the slot sequence no. */
512 /* The session may be reset by one of the error handlers. */
513 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
514 nfs41_sequence_free_slot(res
);
517 if (rpc_restart_call_prepare(task
)) {
523 if (!rpc_restart_call(task
))
525 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
529 static int nfs4_sequence_done(struct rpc_task
*task
,
530 struct nfs4_sequence_res
*res
)
532 if (res
->sr_slot
== NULL
)
534 return nfs41_sequence_done(task
, res
);
537 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
538 struct nfs4_sequence_res
*res
, int cache_reply
)
540 args
->sa_slot
= NULL
;
541 args
->sa_cache_this
= 0;
542 args
->sa_privileged
= 0;
544 args
->sa_cache_this
= 1;
548 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
550 args
->sa_privileged
= 1;
553 int nfs41_setup_sequence(struct nfs4_session
*session
,
554 struct nfs4_sequence_args
*args
,
555 struct nfs4_sequence_res
*res
,
556 struct rpc_task
*task
)
558 struct nfs4_slot
*slot
;
559 struct nfs4_slot_table
*tbl
;
561 dprintk("--> %s\n", __func__
);
562 /* slot already allocated? */
563 if (res
->sr_slot
!= NULL
)
566 tbl
= &session
->fc_slot_table
;
568 task
->tk_timeout
= 0;
570 spin_lock(&tbl
->slot_tbl_lock
);
571 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
572 !args
->sa_privileged
) {
573 /* The state manager will wait until the slot table is empty */
574 dprintk("%s session is draining\n", __func__
);
578 slot
= nfs4_alloc_slot(tbl
);
580 /* If out of memory, try again in 1/4 second */
581 if (slot
== ERR_PTR(-ENOMEM
))
582 task
->tk_timeout
= HZ
>> 2;
583 dprintk("<-- %s: no free slots\n", __func__
);
586 spin_unlock(&tbl
->slot_tbl_lock
);
588 args
->sa_slot
= slot
;
590 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
,
591 slot
->slot_nr
, slot
->seq_nr
);
594 res
->sr_timestamp
= jiffies
;
595 res
->sr_status_flags
= 0;
597 * sr_status is only set in decode_sequence, and so will remain
598 * set to 1 if an rpc level failure occurs.
602 rpc_call_start(task
);
605 /* Privileged tasks are queued with top priority */
606 if (args
->sa_privileged
)
607 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
608 NULL
, RPC_PRIORITY_PRIVILEGED
);
610 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
611 spin_unlock(&tbl
->slot_tbl_lock
);
614 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
616 int nfs4_setup_sequence(const struct nfs_server
*server
,
617 struct nfs4_sequence_args
*args
,
618 struct nfs4_sequence_res
*res
,
619 struct rpc_task
*task
)
621 struct nfs4_session
*session
= nfs4_get_session(server
);
624 if (session
== NULL
) {
625 rpc_call_start(task
);
629 dprintk("--> %s clp %p session %p sr_slot %d\n",
630 __func__
, session
->clp
, session
, res
->sr_slot
?
631 res
->sr_slot
->slot_nr
: -1);
633 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
635 dprintk("<-- %s status=%d\n", __func__
, ret
);
639 struct nfs41_call_sync_data
{
640 const struct nfs_server
*seq_server
;
641 struct nfs4_sequence_args
*seq_args
;
642 struct nfs4_sequence_res
*seq_res
;
645 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
647 struct nfs41_call_sync_data
*data
= calldata
;
648 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
650 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
652 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
655 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
657 struct nfs41_call_sync_data
*data
= calldata
;
659 nfs41_sequence_done(task
, data
->seq_res
);
662 static const struct rpc_call_ops nfs41_call_sync_ops
= {
663 .rpc_call_prepare
= nfs41_call_sync_prepare
,
664 .rpc_call_done
= nfs41_call_sync_done
,
667 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
668 struct nfs_server
*server
,
669 struct rpc_message
*msg
,
670 struct nfs4_sequence_args
*args
,
671 struct nfs4_sequence_res
*res
)
674 struct rpc_task
*task
;
675 struct nfs41_call_sync_data data
= {
676 .seq_server
= server
,
680 struct rpc_task_setup task_setup
= {
683 .callback_ops
= &nfs41_call_sync_ops
,
684 .callback_data
= &data
687 task
= rpc_run_task(&task_setup
);
691 ret
= task
->tk_status
;
699 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
700 struct nfs4_sequence_res
*res
, int cache_reply
)
704 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
709 static int nfs4_sequence_done(struct rpc_task
*task
,
710 struct nfs4_sequence_res
*res
)
714 #endif /* CONFIG_NFS_V4_1 */
717 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
718 struct nfs_server
*server
,
719 struct rpc_message
*msg
,
720 struct nfs4_sequence_args
*args
,
721 struct nfs4_sequence_res
*res
)
723 return rpc_call_sync(clnt
, msg
, 0);
727 int nfs4_call_sync(struct rpc_clnt
*clnt
,
728 struct nfs_server
*server
,
729 struct rpc_message
*msg
,
730 struct nfs4_sequence_args
*args
,
731 struct nfs4_sequence_res
*res
,
734 nfs41_init_sequence(args
, res
, cache_reply
);
735 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
739 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
741 struct nfs_inode
*nfsi
= NFS_I(dir
);
743 spin_lock(&dir
->i_lock
);
744 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
745 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
746 nfs_force_lookup_revalidate(dir
);
747 dir
->i_version
= cinfo
->after
;
748 nfs_fscache_invalidate(dir
);
749 spin_unlock(&dir
->i_lock
);
752 struct nfs4_opendata
{
754 struct nfs_openargs o_arg
;
755 struct nfs_openres o_res
;
756 struct nfs_open_confirmargs c_arg
;
757 struct nfs_open_confirmres c_res
;
758 struct nfs4_string owner_name
;
759 struct nfs4_string group_name
;
760 struct nfs_fattr f_attr
;
762 struct dentry
*dentry
;
763 struct nfs4_state_owner
*owner
;
764 struct nfs4_state
*state
;
766 unsigned long timestamp
;
767 unsigned int rpc_done
: 1;
772 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
773 int err
, struct nfs4_exception
*exception
)
777 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
779 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
780 exception
->retry
= 1;
784 static enum open_claim_type4
785 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
786 enum open_claim_type4 claim
)
788 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
793 case NFS4_OPEN_CLAIM_FH
:
794 return NFS4_OPEN_CLAIM_NULL
;
795 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
796 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
797 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
798 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
802 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
804 p
->o_res
.f_attr
= &p
->f_attr
;
805 p
->o_res
.seqid
= p
->o_arg
.seqid
;
806 p
->c_res
.seqid
= p
->c_arg
.seqid
;
807 p
->o_res
.server
= p
->o_arg
.server
;
808 p
->o_res
.access_request
= p
->o_arg
.access
;
809 nfs_fattr_init(&p
->f_attr
);
810 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
813 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
814 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
815 const struct iattr
*attrs
,
816 enum open_claim_type4 claim
,
819 struct dentry
*parent
= dget_parent(dentry
);
820 struct inode
*dir
= parent
->d_inode
;
821 struct nfs_server
*server
= NFS_SERVER(dir
);
822 struct nfs4_opendata
*p
;
824 p
= kzalloc(sizeof(*p
), gfp_mask
);
827 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
828 if (p
->o_arg
.seqid
== NULL
)
830 nfs_sb_active(dentry
->d_sb
);
831 p
->dentry
= dget(dentry
);
834 atomic_inc(&sp
->so_count
);
835 p
->o_arg
.open_flags
= flags
;
836 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
837 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
838 * will return permission denied for all bits until close */
839 if (!(flags
& O_EXCL
)) {
840 /* ask server to check for all possible rights as results
842 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
843 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
845 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
846 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
847 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
848 p
->o_arg
.name
= &dentry
->d_name
;
849 p
->o_arg
.server
= server
;
850 p
->o_arg
.bitmask
= server
->attr_bitmask
;
851 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
852 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
853 switch (p
->o_arg
.claim
) {
854 case NFS4_OPEN_CLAIM_NULL
:
855 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
856 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
857 p
->o_arg
.fh
= NFS_FH(dir
);
859 case NFS4_OPEN_CLAIM_PREVIOUS
:
860 case NFS4_OPEN_CLAIM_FH
:
861 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
862 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
863 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
865 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
868 p
->o_arg
.u
.attrs
= &p
->attrs
;
869 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
872 verf
[1] = current
->pid
;
873 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
874 sizeof(p
->o_arg
.u
.verifier
.data
));
876 p
->c_arg
.fh
= &p
->o_res
.fh
;
877 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
878 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
879 nfs4_init_opendata_res(p
);
889 static void nfs4_opendata_free(struct kref
*kref
)
891 struct nfs4_opendata
*p
= container_of(kref
,
892 struct nfs4_opendata
, kref
);
893 struct super_block
*sb
= p
->dentry
->d_sb
;
895 nfs_free_seqid(p
->o_arg
.seqid
);
896 if (p
->state
!= NULL
)
897 nfs4_put_open_state(p
->state
);
898 nfs4_put_state_owner(p
->owner
);
902 nfs_fattr_free_names(&p
->f_attr
);
906 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
909 kref_put(&p
->kref
, nfs4_opendata_free
);
912 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
916 ret
= rpc_wait_for_completion_task(task
);
920 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
924 if (open_mode
& (O_EXCL
|O_TRUNC
))
926 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
928 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
929 && state
->n_rdonly
!= 0;
932 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
933 && state
->n_wronly
!= 0;
935 case FMODE_READ
|FMODE_WRITE
:
936 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
937 && state
->n_rdwr
!= 0;
943 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
945 if (delegation
== NULL
)
947 if ((delegation
->type
& fmode
) != fmode
)
949 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
951 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
953 nfs_mark_delegation_referenced(delegation
);
957 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
966 case FMODE_READ
|FMODE_WRITE
:
969 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
972 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
974 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
975 nfs4_stateid_copy(&state
->stateid
, stateid
);
976 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
979 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
982 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
984 case FMODE_READ
|FMODE_WRITE
:
985 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
989 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
991 write_seqlock(&state
->seqlock
);
992 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
993 write_sequnlock(&state
->seqlock
);
996 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
999 * Protect the call to nfs4_state_set_mode_locked and
1000 * serialise the stateid update
1002 write_seqlock(&state
->seqlock
);
1003 if (deleg_stateid
!= NULL
) {
1004 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1005 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1007 if (open_stateid
!= NULL
)
1008 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1009 write_sequnlock(&state
->seqlock
);
1010 spin_lock(&state
->owner
->so_lock
);
1011 update_open_stateflags(state
, fmode
);
1012 spin_unlock(&state
->owner
->so_lock
);
1015 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1017 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1018 struct nfs_delegation
*deleg_cur
;
1021 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1024 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1025 if (deleg_cur
== NULL
)
1028 spin_lock(&deleg_cur
->lock
);
1029 if (nfsi
->delegation
!= deleg_cur
||
1030 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1031 (deleg_cur
->type
& fmode
) != fmode
)
1032 goto no_delegation_unlock
;
1034 if (delegation
== NULL
)
1035 delegation
= &deleg_cur
->stateid
;
1036 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1037 goto no_delegation_unlock
;
1039 nfs_mark_delegation_referenced(deleg_cur
);
1040 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1042 no_delegation_unlock
:
1043 spin_unlock(&deleg_cur
->lock
);
1047 if (!ret
&& open_stateid
!= NULL
) {
1048 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1056 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1058 struct nfs_delegation
*delegation
;
1061 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1062 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1067 nfs4_inode_return_delegation(inode
);
1070 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1072 struct nfs4_state
*state
= opendata
->state
;
1073 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1074 struct nfs_delegation
*delegation
;
1075 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1076 fmode_t fmode
= opendata
->o_arg
.fmode
;
1077 nfs4_stateid stateid
;
1081 if (can_open_cached(state
, fmode
, open_mode
)) {
1082 spin_lock(&state
->owner
->so_lock
);
1083 if (can_open_cached(state
, fmode
, open_mode
)) {
1084 update_open_stateflags(state
, fmode
);
1085 spin_unlock(&state
->owner
->so_lock
);
1086 goto out_return_state
;
1088 spin_unlock(&state
->owner
->so_lock
);
1091 delegation
= rcu_dereference(nfsi
->delegation
);
1092 if (!can_open_delegated(delegation
, fmode
)) {
1096 /* Save the delegation */
1097 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1099 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1104 /* Try to update the stateid using the delegation */
1105 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1106 goto out_return_state
;
1109 return ERR_PTR(ret
);
1111 atomic_inc(&state
->count
);
1116 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1118 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1119 struct nfs_delegation
*delegation
;
1120 int delegation_flags
= 0;
1123 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1125 delegation_flags
= delegation
->flags
;
1127 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1128 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1129 "returning a delegation for "
1130 "OPEN(CLAIM_DELEGATE_CUR)\n",
1132 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1133 nfs_inode_set_delegation(state
->inode
,
1134 data
->owner
->so_cred
,
1137 nfs_inode_reclaim_delegation(state
->inode
,
1138 data
->owner
->so_cred
,
1143 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1144 * and update the nfs4_state.
1146 static struct nfs4_state
*
1147 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1149 struct inode
*inode
= data
->state
->inode
;
1150 struct nfs4_state
*state
= data
->state
;
1153 if (!data
->rpc_done
) {
1154 ret
= data
->rpc_status
;
1159 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1160 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1161 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1165 state
= nfs4_get_open_state(inode
, data
->owner
);
1169 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1173 if (data
->o_res
.delegation_type
!= 0)
1174 nfs4_opendata_check_deleg(data
, state
);
1175 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1180 return ERR_PTR(ret
);
1184 static struct nfs4_state
*
1185 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1187 struct inode
*inode
;
1188 struct nfs4_state
*state
= NULL
;
1191 if (!data
->rpc_done
) {
1192 state
= nfs4_try_open_cached(data
);
1197 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1199 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1200 ret
= PTR_ERR(inode
);
1204 state
= nfs4_get_open_state(inode
, data
->owner
);
1207 if (data
->o_res
.delegation_type
!= 0)
1208 nfs4_opendata_check_deleg(data
, state
);
1209 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1213 nfs_release_seqid(data
->o_arg
.seqid
);
1218 return ERR_PTR(ret
);
1221 static struct nfs4_state
*
1222 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1224 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1225 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1226 return _nfs4_opendata_to_nfs4_state(data
);
1229 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1231 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1232 struct nfs_open_context
*ctx
;
1234 spin_lock(&state
->inode
->i_lock
);
1235 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1236 if (ctx
->state
!= state
)
1238 get_nfs_open_context(ctx
);
1239 spin_unlock(&state
->inode
->i_lock
);
1242 spin_unlock(&state
->inode
->i_lock
);
1243 return ERR_PTR(-ENOENT
);
1246 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1247 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1249 struct nfs4_opendata
*opendata
;
1251 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1252 NULL
, claim
, GFP_NOFS
);
1253 if (opendata
== NULL
)
1254 return ERR_PTR(-ENOMEM
);
1255 opendata
->state
= state
;
1256 atomic_inc(&state
->count
);
1260 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1262 struct nfs4_state
*newstate
;
1265 opendata
->o_arg
.open_flags
= 0;
1266 opendata
->o_arg
.fmode
= fmode
;
1267 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1268 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1269 nfs4_init_opendata_res(opendata
);
1270 ret
= _nfs4_recover_proc_open(opendata
);
1273 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1274 if (IS_ERR(newstate
))
1275 return PTR_ERR(newstate
);
1276 nfs4_close_state(newstate
, fmode
);
1281 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1283 struct nfs4_state
*newstate
;
1286 /* memory barrier prior to reading state->n_* */
1287 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1289 if (state
->n_rdwr
!= 0) {
1290 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1291 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1294 if (newstate
!= state
)
1297 if (state
->n_wronly
!= 0) {
1298 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1299 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1302 if (newstate
!= state
)
1305 if (state
->n_rdonly
!= 0) {
1306 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1307 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1310 if (newstate
!= state
)
1314 * We may have performed cached opens for all three recoveries.
1315 * Check if we need to update the current stateid.
1317 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1318 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1319 write_seqlock(&state
->seqlock
);
1320 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1321 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1322 write_sequnlock(&state
->seqlock
);
1329 * reclaim state on the server after a reboot.
1331 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1333 struct nfs_delegation
*delegation
;
1334 struct nfs4_opendata
*opendata
;
1335 fmode_t delegation_type
= 0;
1338 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1339 NFS4_OPEN_CLAIM_PREVIOUS
);
1340 if (IS_ERR(opendata
))
1341 return PTR_ERR(opendata
);
1343 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1344 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1345 delegation_type
= delegation
->type
;
1347 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1348 status
= nfs4_open_recover(opendata
, state
);
1349 nfs4_opendata_put(opendata
);
1353 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1355 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1356 struct nfs4_exception exception
= { };
1359 err
= _nfs4_do_open_reclaim(ctx
, state
);
1360 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1362 if (err
!= -NFS4ERR_DELAY
)
1364 nfs4_handle_exception(server
, err
, &exception
);
1365 } while (exception
.retry
);
1369 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1371 struct nfs_open_context
*ctx
;
1374 ctx
= nfs4_state_find_open_context(state
);
1377 ret
= nfs4_do_open_reclaim(ctx
, state
);
1378 put_nfs_open_context(ctx
);
1382 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1384 struct nfs4_opendata
*opendata
;
1387 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1388 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1389 if (IS_ERR(opendata
))
1390 return PTR_ERR(opendata
);
1391 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1392 ret
= nfs4_open_recover(opendata
, state
);
1393 nfs4_opendata_put(opendata
);
1397 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1399 struct nfs4_exception exception
= { };
1400 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1403 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1409 case -NFS4ERR_BADSESSION
:
1410 case -NFS4ERR_BADSLOT
:
1411 case -NFS4ERR_BAD_HIGH_SLOT
:
1412 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1413 case -NFS4ERR_DEADSESSION
:
1414 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1415 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1418 case -NFS4ERR_STALE_CLIENTID
:
1419 case -NFS4ERR_STALE_STATEID
:
1420 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1421 case -NFS4ERR_EXPIRED
:
1422 /* Don't recall a delegation if it was lost */
1423 nfs4_schedule_lease_recovery(server
->nfs_client
);
1426 case -NFS4ERR_DELEG_REVOKED
:
1427 case -NFS4ERR_ADMIN_REVOKED
:
1428 case -NFS4ERR_BAD_STATEID
:
1429 nfs_inode_find_state_and_recover(state
->inode
,
1431 nfs4_schedule_stateid_recovery(server
, state
);
1436 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1437 err
= nfs4_handle_exception(server
, err
, &exception
);
1438 } while (exception
.retry
);
1443 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1445 struct nfs4_opendata
*data
= calldata
;
1447 data
->rpc_status
= task
->tk_status
;
1448 if (data
->rpc_status
== 0) {
1449 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1450 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1451 renew_lease(data
->o_res
.server
, data
->timestamp
);
1456 static void nfs4_open_confirm_release(void *calldata
)
1458 struct nfs4_opendata
*data
= calldata
;
1459 struct nfs4_state
*state
= NULL
;
1461 /* If this request hasn't been cancelled, do nothing */
1462 if (data
->cancelled
== 0)
1464 /* In case of error, no cleanup! */
1465 if (!data
->rpc_done
)
1467 state
= nfs4_opendata_to_nfs4_state(data
);
1469 nfs4_close_state(state
, data
->o_arg
.fmode
);
1471 nfs4_opendata_put(data
);
1474 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1475 .rpc_call_done
= nfs4_open_confirm_done
,
1476 .rpc_release
= nfs4_open_confirm_release
,
1480 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1482 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1484 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1485 struct rpc_task
*task
;
1486 struct rpc_message msg
= {
1487 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1488 .rpc_argp
= &data
->c_arg
,
1489 .rpc_resp
= &data
->c_res
,
1490 .rpc_cred
= data
->owner
->so_cred
,
1492 struct rpc_task_setup task_setup_data
= {
1493 .rpc_client
= server
->client
,
1494 .rpc_message
= &msg
,
1495 .callback_ops
= &nfs4_open_confirm_ops
,
1496 .callback_data
= data
,
1497 .workqueue
= nfsiod_workqueue
,
1498 .flags
= RPC_TASK_ASYNC
,
1502 kref_get(&data
->kref
);
1504 data
->rpc_status
= 0;
1505 data
->timestamp
= jiffies
;
1506 task
= rpc_run_task(&task_setup_data
);
1508 return PTR_ERR(task
);
1509 status
= nfs4_wait_for_completion_rpc_task(task
);
1511 data
->cancelled
= 1;
1514 status
= data
->rpc_status
;
1519 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1521 struct nfs4_opendata
*data
= calldata
;
1522 struct nfs4_state_owner
*sp
= data
->owner
;
1524 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1527 * Check if we still need to send an OPEN call, or if we can use
1528 * a delegation instead.
1530 if (data
->state
!= NULL
) {
1531 struct nfs_delegation
*delegation
;
1533 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1536 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1537 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1538 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1539 goto unlock_no_action
;
1542 /* Update client id. */
1543 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1544 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1545 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1546 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1547 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1549 data
->timestamp
= jiffies
;
1550 if (nfs4_setup_sequence(data
->o_arg
.server
,
1551 &data
->o_arg
.seq_args
,
1552 &data
->o_res
.seq_res
,
1554 nfs_release_seqid(data
->o_arg
.seqid
);
1559 task
->tk_action
= NULL
;
1561 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1564 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1566 struct nfs4_opendata
*data
= calldata
;
1568 data
->rpc_status
= task
->tk_status
;
1570 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1573 if (task
->tk_status
== 0) {
1574 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1575 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1579 data
->rpc_status
= -ELOOP
;
1582 data
->rpc_status
= -EISDIR
;
1585 data
->rpc_status
= -ENOTDIR
;
1588 renew_lease(data
->o_res
.server
, data
->timestamp
);
1589 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1590 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1595 static void nfs4_open_release(void *calldata
)
1597 struct nfs4_opendata
*data
= calldata
;
1598 struct nfs4_state
*state
= NULL
;
1600 /* If this request hasn't been cancelled, do nothing */
1601 if (data
->cancelled
== 0)
1603 /* In case of error, no cleanup! */
1604 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1606 /* In case we need an open_confirm, no cleanup! */
1607 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1609 state
= nfs4_opendata_to_nfs4_state(data
);
1611 nfs4_close_state(state
, data
->o_arg
.fmode
);
1613 nfs4_opendata_put(data
);
1616 static const struct rpc_call_ops nfs4_open_ops
= {
1617 .rpc_call_prepare
= nfs4_open_prepare
,
1618 .rpc_call_done
= nfs4_open_done
,
1619 .rpc_release
= nfs4_open_release
,
1622 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1624 struct inode
*dir
= data
->dir
->d_inode
;
1625 struct nfs_server
*server
= NFS_SERVER(dir
);
1626 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1627 struct nfs_openres
*o_res
= &data
->o_res
;
1628 struct rpc_task
*task
;
1629 struct rpc_message msg
= {
1630 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1633 .rpc_cred
= data
->owner
->so_cred
,
1635 struct rpc_task_setup task_setup_data
= {
1636 .rpc_client
= server
->client
,
1637 .rpc_message
= &msg
,
1638 .callback_ops
= &nfs4_open_ops
,
1639 .callback_data
= data
,
1640 .workqueue
= nfsiod_workqueue
,
1641 .flags
= RPC_TASK_ASYNC
,
1645 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1646 kref_get(&data
->kref
);
1648 data
->rpc_status
= 0;
1649 data
->cancelled
= 0;
1651 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1652 task
= rpc_run_task(&task_setup_data
);
1654 return PTR_ERR(task
);
1655 status
= nfs4_wait_for_completion_rpc_task(task
);
1657 data
->cancelled
= 1;
1660 status
= data
->rpc_status
;
1666 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1668 struct inode
*dir
= data
->dir
->d_inode
;
1669 struct nfs_openres
*o_res
= &data
->o_res
;
1672 status
= nfs4_run_open_task(data
, 1);
1673 if (status
!= 0 || !data
->rpc_done
)
1676 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1678 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1679 status
= _nfs4_proc_open_confirm(data
);
1687 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1688 struct nfs4_opendata
*opendata
,
1689 struct nfs4_state
*state
, fmode_t fmode
,
1692 struct nfs_access_entry cache
;
1695 /* access call failed or for some reason the server doesn't
1696 * support any access modes -- defer access call until later */
1697 if (opendata
->o_res
.access_supported
== 0)
1701 /* don't check MAY_WRITE - a newly created file may not have
1702 * write mode bits, but POSIX allows the creating process to write.
1703 * use openflags to check for exec, because fmode won't
1704 * always have FMODE_EXEC set when file open for exec. */
1705 if (openflags
& __FMODE_EXEC
) {
1706 /* ONLY check for exec rights */
1708 } else if (fmode
& FMODE_READ
)
1712 cache
.jiffies
= jiffies
;
1713 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1714 nfs_access_add_cache(state
->inode
, &cache
);
1716 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1719 /* even though OPEN succeeded, access is denied. Close the file */
1720 nfs4_close_state(state
, fmode
);
1725 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1727 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1729 struct inode
*dir
= data
->dir
->d_inode
;
1730 struct nfs_server
*server
= NFS_SERVER(dir
);
1731 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1732 struct nfs_openres
*o_res
= &data
->o_res
;
1735 status
= nfs4_run_open_task(data
, 0);
1736 if (!data
->rpc_done
)
1739 if (status
== -NFS4ERR_BADNAME
&&
1740 !(o_arg
->open_flags
& O_CREAT
))
1745 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1747 if (o_arg
->open_flags
& O_CREAT
)
1748 update_changeattr(dir
, &o_res
->cinfo
);
1749 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1750 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1751 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1752 status
= _nfs4_proc_open_confirm(data
);
1756 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1757 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1761 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1763 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1768 * reclaim state on the server after a network partition.
1769 * Assumes caller holds the appropriate lock
1771 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1773 struct nfs4_opendata
*opendata
;
1776 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1777 NFS4_OPEN_CLAIM_FH
);
1778 if (IS_ERR(opendata
))
1779 return PTR_ERR(opendata
);
1780 ret
= nfs4_open_recover(opendata
, state
);
1782 d_drop(ctx
->dentry
);
1783 nfs4_opendata_put(opendata
);
1787 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1789 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1790 struct nfs4_exception exception
= { };
1794 err
= _nfs4_open_expired(ctx
, state
);
1795 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1800 case -NFS4ERR_GRACE
:
1801 case -NFS4ERR_DELAY
:
1802 nfs4_handle_exception(server
, err
, &exception
);
1805 } while (exception
.retry
);
1810 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1812 struct nfs_open_context
*ctx
;
1815 ctx
= nfs4_state_find_open_context(state
);
1818 ret
= nfs4_do_open_expired(ctx
, state
);
1819 put_nfs_open_context(ctx
);
1823 #if defined(CONFIG_NFS_V4_1)
1824 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1826 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1827 nfs4_stateid
*stateid
= &state
->stateid
;
1830 /* If a state reset has been done, test_stateid is unneeded */
1831 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1834 status
= nfs41_test_stateid(server
, stateid
);
1835 if (status
!= NFS_OK
) {
1836 /* Free the stateid unless the server explicitly
1837 * informs us the stateid is unrecognized. */
1838 if (status
!= -NFS4ERR_BAD_STATEID
)
1839 nfs41_free_stateid(server
, stateid
);
1840 nfs_remove_bad_delegation(state
->inode
);
1842 write_seqlock(&state
->seqlock
);
1843 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1844 write_sequnlock(&state
->seqlock
);
1845 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1850 * nfs41_check_open_stateid - possibly free an open stateid
1852 * @state: NFSv4 state for an inode
1854 * Returns NFS_OK if recovery for this stateid is now finished.
1855 * Otherwise a negative NFS4ERR value is returned.
1857 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1859 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1860 nfs4_stateid
*stateid
= &state
->open_stateid
;
1863 /* If a state reset has been done, test_stateid is unneeded */
1864 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1865 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1866 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1867 return -NFS4ERR_BAD_STATEID
;
1869 status
= nfs41_test_stateid(server
, stateid
);
1870 if (status
!= NFS_OK
) {
1871 /* Free the stateid unless the server explicitly
1872 * informs us the stateid is unrecognized. */
1873 if (status
!= -NFS4ERR_BAD_STATEID
)
1874 nfs41_free_stateid(server
, stateid
);
1876 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1877 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1878 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1883 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1887 nfs41_clear_delegation_stateid(state
);
1888 status
= nfs41_check_open_stateid(state
);
1889 if (status
!= NFS_OK
)
1890 status
= nfs4_open_expired(sp
, state
);
1896 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1897 * fields corresponding to attributes that were used to store the verifier.
1898 * Make sure we clobber those fields in the later setattr call
1900 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1902 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1903 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1904 sattr
->ia_valid
|= ATTR_ATIME
;
1906 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1907 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1908 sattr
->ia_valid
|= ATTR_MTIME
;
1911 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
1914 struct nfs4_state
**res
)
1916 struct nfs4_state_owner
*sp
= opendata
->owner
;
1917 struct nfs_server
*server
= sp
->so_server
;
1918 struct nfs4_state
*state
;
1922 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
1924 ret
= _nfs4_proc_open(opendata
);
1928 state
= nfs4_opendata_to_nfs4_state(opendata
);
1929 ret
= PTR_ERR(state
);
1932 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1933 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1935 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
1939 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
1940 nfs4_schedule_stateid_recovery(server
, state
);
1947 * Returns a referenced nfs4_state
1949 static int _nfs4_do_open(struct inode
*dir
,
1950 struct dentry
*dentry
,
1953 struct iattr
*sattr
,
1954 struct rpc_cred
*cred
,
1955 struct nfs4_state
**res
,
1956 struct nfs4_threshold
**ctx_th
)
1958 struct nfs4_state_owner
*sp
;
1959 struct nfs4_state
*state
= NULL
;
1960 struct nfs_server
*server
= NFS_SERVER(dir
);
1961 struct nfs4_opendata
*opendata
;
1962 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
1965 /* Protect against reboot recovery conflicts */
1967 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1969 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1972 status
= nfs4_recover_expired_lease(server
);
1974 goto err_put_state_owner
;
1975 if (dentry
->d_inode
!= NULL
)
1976 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1978 if (dentry
->d_inode
)
1979 claim
= NFS4_OPEN_CLAIM_FH
;
1980 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
1982 if (opendata
== NULL
)
1983 goto err_put_state_owner
;
1985 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
1986 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
1987 if (!opendata
->f_attr
.mdsthreshold
)
1988 goto err_opendata_put
;
1989 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
1991 if (dentry
->d_inode
!= NULL
)
1992 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1994 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, &state
);
1996 goto err_opendata_put
;
1998 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1999 nfs4_exclusive_attrset(opendata
, sattr
);
2001 nfs_fattr_init(opendata
->o_res
.f_attr
);
2002 status
= nfs4_do_setattr(state
->inode
, cred
,
2003 opendata
->o_res
.f_attr
, sattr
,
2006 nfs_setattr_update_inode(state
->inode
, sattr
);
2007 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2010 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2011 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2013 kfree(opendata
->f_attr
.mdsthreshold
);
2014 opendata
->f_attr
.mdsthreshold
= NULL
;
2016 nfs4_opendata_put(opendata
);
2017 nfs4_put_state_owner(sp
);
2021 kfree(opendata
->f_attr
.mdsthreshold
);
2022 nfs4_opendata_put(opendata
);
2023 err_put_state_owner
:
2024 nfs4_put_state_owner(sp
);
2031 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2032 struct dentry
*dentry
,
2035 struct iattr
*sattr
,
2036 struct rpc_cred
*cred
,
2037 struct nfs4_threshold
**ctx_th
)
2039 struct nfs_server
*server
= NFS_SERVER(dir
);
2040 struct nfs4_exception exception
= { };
2041 struct nfs4_state
*res
;
2044 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
2046 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
2050 /* NOTE: BAD_SEQID means the server and client disagree about the
2051 * book-keeping w.r.t. state-changing operations
2052 * (OPEN/CLOSE/LOCK/LOCKU...)
2053 * It is actually a sign of a bug on the client or on the server.
2055 * If we receive a BAD_SEQID error in the particular case of
2056 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2057 * have unhashed the old state_owner for us, and that we can
2058 * therefore safely retry using a new one. We should still warn
2059 * the user though...
2061 if (status
== -NFS4ERR_BAD_SEQID
) {
2062 pr_warn_ratelimited("NFS: v4 server %s "
2063 " returned a bad sequence-id error!\n",
2064 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2065 exception
.retry
= 1;
2069 * BAD_STATEID on OPEN means that the server cancelled our
2070 * state before it received the OPEN_CONFIRM.
2071 * Recover by retrying the request as per the discussion
2072 * on Page 181 of RFC3530.
2074 if (status
== -NFS4ERR_BAD_STATEID
) {
2075 exception
.retry
= 1;
2078 if (status
== -EAGAIN
) {
2079 /* We must have found a delegation */
2080 exception
.retry
= 1;
2083 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2085 res
= ERR_PTR(nfs4_handle_exception(server
,
2086 status
, &exception
));
2087 } while (exception
.retry
);
2091 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2092 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2093 struct nfs4_state
*state
)
2095 struct nfs_server
*server
= NFS_SERVER(inode
);
2096 struct nfs_setattrargs arg
= {
2097 .fh
= NFS_FH(inode
),
2100 .bitmask
= server
->attr_bitmask
,
2102 struct nfs_setattrres res
= {
2106 struct rpc_message msg
= {
2107 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2112 unsigned long timestamp
= jiffies
;
2115 nfs_fattr_init(fattr
);
2117 if (state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2118 struct nfs_lockowner lockowner
= {
2119 .l_owner
= current
->files
,
2120 .l_pid
= current
->tgid
,
2122 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2124 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
2126 /* Use that stateid */
2128 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2130 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2131 if (status
== 0 && state
!= NULL
)
2132 renew_lease(server
, timestamp
);
2136 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2137 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2138 struct nfs4_state
*state
)
2140 struct nfs_server
*server
= NFS_SERVER(inode
);
2141 struct nfs4_exception exception
= {
2147 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2149 case -NFS4ERR_OPENMODE
:
2150 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2152 if (sattr
->ia_valid
& ATTR_OPEN
)
2157 err
= nfs4_handle_exception(server
, err
, &exception
);
2158 } while (exception
.retry
);
2163 struct nfs4_closedata
{
2164 struct inode
*inode
;
2165 struct nfs4_state
*state
;
2166 struct nfs_closeargs arg
;
2167 struct nfs_closeres res
;
2168 struct nfs_fattr fattr
;
2169 unsigned long timestamp
;
2174 static void nfs4_free_closedata(void *data
)
2176 struct nfs4_closedata
*calldata
= data
;
2177 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2178 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2181 pnfs_roc_release(calldata
->state
->inode
);
2182 nfs4_put_open_state(calldata
->state
);
2183 nfs_free_seqid(calldata
->arg
.seqid
);
2184 nfs4_put_state_owner(sp
);
2185 nfs_sb_deactive(sb
);
2189 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2192 spin_lock(&state
->owner
->so_lock
);
2193 if (!(fmode
& FMODE_READ
))
2194 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2195 if (!(fmode
& FMODE_WRITE
))
2196 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2197 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2198 spin_unlock(&state
->owner
->so_lock
);
2201 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2203 struct nfs4_closedata
*calldata
= data
;
2204 struct nfs4_state
*state
= calldata
->state
;
2205 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2207 dprintk("%s: begin!\n", __func__
);
2208 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2210 /* hmm. we are done with the inode, and in the process of freeing
2211 * the state_owner. we keep this around to process errors
2213 switch (task
->tk_status
) {
2216 pnfs_roc_set_barrier(state
->inode
,
2217 calldata
->roc_barrier
);
2218 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2219 renew_lease(server
, calldata
->timestamp
);
2220 nfs4_close_clear_stateid_flags(state
,
2221 calldata
->arg
.fmode
);
2223 case -NFS4ERR_STALE_STATEID
:
2224 case -NFS4ERR_OLD_STATEID
:
2225 case -NFS4ERR_BAD_STATEID
:
2226 case -NFS4ERR_EXPIRED
:
2227 if (calldata
->arg
.fmode
== 0)
2230 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2231 rpc_restart_call_prepare(task
);
2233 nfs_release_seqid(calldata
->arg
.seqid
);
2234 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2235 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2238 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2240 struct nfs4_closedata
*calldata
= data
;
2241 struct nfs4_state
*state
= calldata
->state
;
2242 struct inode
*inode
= calldata
->inode
;
2245 dprintk("%s: begin!\n", __func__
);
2246 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2249 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2250 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2251 spin_lock(&state
->owner
->so_lock
);
2252 /* Calculate the change in open mode */
2253 if (state
->n_rdwr
== 0) {
2254 if (state
->n_rdonly
== 0) {
2255 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2256 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2257 calldata
->arg
.fmode
&= ~FMODE_READ
;
2259 if (state
->n_wronly
== 0) {
2260 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2261 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2262 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2265 if (!nfs4_valid_open_stateid(state
))
2267 spin_unlock(&state
->owner
->so_lock
);
2270 /* Note: exit _without_ calling nfs4_close_done */
2274 if (calldata
->arg
.fmode
== 0) {
2275 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2276 if (calldata
->roc
&&
2277 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
))
2281 nfs_fattr_init(calldata
->res
.fattr
);
2282 calldata
->timestamp
= jiffies
;
2283 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2284 &calldata
->arg
.seq_args
,
2285 &calldata
->res
.seq_res
,
2287 nfs_release_seqid(calldata
->arg
.seqid
);
2288 dprintk("%s: done!\n", __func__
);
2291 task
->tk_action
= NULL
;
2293 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2296 static const struct rpc_call_ops nfs4_close_ops
= {
2297 .rpc_call_prepare
= nfs4_close_prepare
,
2298 .rpc_call_done
= nfs4_close_done
,
2299 .rpc_release
= nfs4_free_closedata
,
2303 * It is possible for data to be read/written from a mem-mapped file
2304 * after the sys_close call (which hits the vfs layer as a flush).
2305 * This means that we can't safely call nfsv4 close on a file until
2306 * the inode is cleared. This in turn means that we are not good
2307 * NFSv4 citizens - we do not indicate to the server to update the file's
2308 * share state even when we are done with one of the three share
2309 * stateid's in the inode.
2311 * NOTE: Caller must be holding the sp->so_owner semaphore!
2313 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2315 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2316 struct nfs4_closedata
*calldata
;
2317 struct nfs4_state_owner
*sp
= state
->owner
;
2318 struct rpc_task
*task
;
2319 struct rpc_message msg
= {
2320 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2321 .rpc_cred
= state
->owner
->so_cred
,
2323 struct rpc_task_setup task_setup_data
= {
2324 .rpc_client
= server
->client
,
2325 .rpc_message
= &msg
,
2326 .callback_ops
= &nfs4_close_ops
,
2327 .workqueue
= nfsiod_workqueue
,
2328 .flags
= RPC_TASK_ASYNC
,
2330 int status
= -ENOMEM
;
2332 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2333 if (calldata
== NULL
)
2335 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2336 calldata
->inode
= state
->inode
;
2337 calldata
->state
= state
;
2338 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2339 calldata
->arg
.stateid
= &state
->open_stateid
;
2340 /* Serialization for the sequence id */
2341 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2342 if (calldata
->arg
.seqid
== NULL
)
2343 goto out_free_calldata
;
2344 calldata
->arg
.fmode
= 0;
2345 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2346 calldata
->res
.fattr
= &calldata
->fattr
;
2347 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2348 calldata
->res
.server
= server
;
2349 calldata
->roc
= pnfs_roc(state
->inode
);
2350 nfs_sb_active(calldata
->inode
->i_sb
);
2352 msg
.rpc_argp
= &calldata
->arg
;
2353 msg
.rpc_resp
= &calldata
->res
;
2354 task_setup_data
.callback_data
= calldata
;
2355 task
= rpc_run_task(&task_setup_data
);
2357 return PTR_ERR(task
);
2360 status
= rpc_wait_for_completion_task(task
);
2366 nfs4_put_open_state(state
);
2367 nfs4_put_state_owner(sp
);
2371 static struct inode
*
2372 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2374 struct nfs4_state
*state
;
2376 /* Protect against concurrent sillydeletes */
2377 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2378 ctx
->cred
, &ctx
->mdsthreshold
);
2380 return ERR_CAST(state
);
2382 return igrab(state
->inode
);
2385 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2387 if (ctx
->state
== NULL
)
2390 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2392 nfs4_close_state(ctx
->state
, ctx
->mode
);
2395 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2397 struct nfs4_server_caps_arg args
= {
2400 struct nfs4_server_caps_res res
= {};
2401 struct rpc_message msg
= {
2402 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2408 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2410 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2411 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2412 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2413 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2414 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2415 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2416 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2417 server
->caps
|= NFS_CAP_ACLS
;
2418 if (res
.has_links
!= 0)
2419 server
->caps
|= NFS_CAP_HARDLINKS
;
2420 if (res
.has_symlinks
!= 0)
2421 server
->caps
|= NFS_CAP_SYMLINKS
;
2422 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2423 server
->caps
|= NFS_CAP_FILEID
;
2424 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2425 server
->caps
|= NFS_CAP_MODE
;
2426 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2427 server
->caps
|= NFS_CAP_NLINK
;
2428 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2429 server
->caps
|= NFS_CAP_OWNER
;
2430 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2431 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2432 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2433 server
->caps
|= NFS_CAP_ATIME
;
2434 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2435 server
->caps
|= NFS_CAP_CTIME
;
2436 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2437 server
->caps
|= NFS_CAP_MTIME
;
2439 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2440 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2441 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2442 server
->acl_bitmask
= res
.acl_bitmask
;
2443 server
->fh_expire_type
= res
.fh_expire_type
;
2449 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2451 struct nfs4_exception exception
= { };
2454 err
= nfs4_handle_exception(server
,
2455 _nfs4_server_capabilities(server
, fhandle
),
2457 } while (exception
.retry
);
2461 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2462 struct nfs_fsinfo
*info
)
2464 struct nfs4_lookup_root_arg args
= {
2465 .bitmask
= nfs4_fattr_bitmap
,
2467 struct nfs4_lookup_res res
= {
2469 .fattr
= info
->fattr
,
2472 struct rpc_message msg
= {
2473 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2478 nfs_fattr_init(info
->fattr
);
2479 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2482 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2483 struct nfs_fsinfo
*info
)
2485 struct nfs4_exception exception
= { };
2488 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2491 case -NFS4ERR_WRONGSEC
:
2494 err
= nfs4_handle_exception(server
, err
, &exception
);
2496 } while (exception
.retry
);
2501 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2502 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2504 struct rpc_auth
*auth
;
2507 auth
= rpcauth_create(flavor
, server
->client
);
2512 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2518 * Retry pseudoroot lookup with various security flavors. We do this when:
2520 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2521 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2523 * Returns zero on success, or a negative NFS4ERR value, or a
2524 * negative errno value.
2526 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2527 struct nfs_fsinfo
*info
)
2529 /* Per 3530bis 15.33.5 */
2530 static const rpc_authflavor_t flav_array
[] = {
2534 RPC_AUTH_UNIX
, /* courtesy */
2537 int status
= -EPERM
;
2540 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2541 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2542 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2548 * -EACCESS could mean that the user doesn't have correct permissions
2549 * to access the mount. It could also mean that we tried to mount
2550 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2551 * existing mount programs don't handle -EACCES very well so it should
2552 * be mapped to -EPERM instead.
2554 if (status
== -EACCES
)
2559 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2560 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2562 int mv
= server
->nfs_client
->cl_minorversion
;
2563 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2567 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2568 * @server: initialized nfs_server handle
2569 * @fhandle: we fill in the pseudo-fs root file handle
2570 * @info: we fill in an FSINFO struct
2572 * Returns zero on success, or a negative errno.
2574 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2575 struct nfs_fsinfo
*info
)
2579 status
= nfs4_lookup_root(server
, fhandle
, info
);
2580 if ((status
== -NFS4ERR_WRONGSEC
) &&
2581 !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2582 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2585 status
= nfs4_server_capabilities(server
, fhandle
);
2587 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2589 return nfs4_map_errors(status
);
2592 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2593 struct nfs_fsinfo
*info
)
2596 struct nfs_fattr
*fattr
= info
->fattr
;
2598 error
= nfs4_server_capabilities(server
, mntfh
);
2600 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2604 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2606 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2610 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2611 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2612 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2618 * Get locations and (maybe) other attributes of a referral.
2619 * Note that we'll actually follow the referral later when
2620 * we detect fsid mismatch in inode revalidation
2622 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2623 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2624 struct nfs_fh
*fhandle
)
2626 int status
= -ENOMEM
;
2627 struct page
*page
= NULL
;
2628 struct nfs4_fs_locations
*locations
= NULL
;
2630 page
= alloc_page(GFP_KERNEL
);
2633 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2634 if (locations
== NULL
)
2637 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2640 /* Make sure server returned a different fsid for the referral */
2641 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2642 dprintk("%s: server did not return a different fsid for"
2643 " a referral at %s\n", __func__
, name
->name
);
2647 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2648 nfs_fixup_referral_attributes(&locations
->fattr
);
2650 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2651 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2652 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2660 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2662 struct nfs4_getattr_arg args
= {
2664 .bitmask
= server
->attr_bitmask
,
2666 struct nfs4_getattr_res res
= {
2670 struct rpc_message msg
= {
2671 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2676 nfs_fattr_init(fattr
);
2677 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2680 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2682 struct nfs4_exception exception
= { };
2685 err
= nfs4_handle_exception(server
,
2686 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2688 } while (exception
.retry
);
2693 * The file is not closed if it is opened due to the a request to change
2694 * the size of the file. The open call will not be needed once the
2695 * VFS layer lookup-intents are implemented.
2697 * Close is called when the inode is destroyed.
2698 * If we haven't opened the file for O_WRONLY, we
2699 * need to in the size_change case to obtain a stateid.
2702 * Because OPEN is always done by name in nfsv4, it is
2703 * possible that we opened a different file by the same
2704 * name. We can recognize this race condition, but we
2705 * can't do anything about it besides returning an error.
2707 * This will be fixed with VFS changes (lookup-intent).
2710 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2711 struct iattr
*sattr
)
2713 struct inode
*inode
= dentry
->d_inode
;
2714 struct rpc_cred
*cred
= NULL
;
2715 struct nfs4_state
*state
= NULL
;
2718 if (pnfs_ld_layoutret_on_setattr(inode
))
2719 pnfs_commit_and_return_layout(inode
);
2721 nfs_fattr_init(fattr
);
2723 /* Deal with open(O_TRUNC) */
2724 if (sattr
->ia_valid
& ATTR_OPEN
)
2725 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2727 /* Optimization: if the end result is no change, don't RPC */
2728 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2731 /* Search for an existing open(O_WRITE) file */
2732 if (sattr
->ia_valid
& ATTR_FILE
) {
2733 struct nfs_open_context
*ctx
;
2735 ctx
= nfs_file_open_context(sattr
->ia_file
);
2742 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2744 nfs_setattr_update_inode(inode
, sattr
);
2748 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2749 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2750 struct nfs_fattr
*fattr
)
2752 struct nfs_server
*server
= NFS_SERVER(dir
);
2754 struct nfs4_lookup_arg args
= {
2755 .bitmask
= server
->attr_bitmask
,
2756 .dir_fh
= NFS_FH(dir
),
2759 struct nfs4_lookup_res res
= {
2764 struct rpc_message msg
= {
2765 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2770 nfs_fattr_init(fattr
);
2772 dprintk("NFS call lookup %s\n", name
->name
);
2773 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2774 dprintk("NFS reply lookup: %d\n", status
);
2778 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2780 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2781 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2782 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2786 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2787 struct qstr
*name
, struct nfs_fh
*fhandle
,
2788 struct nfs_fattr
*fattr
)
2790 struct nfs4_exception exception
= { };
2791 struct rpc_clnt
*client
= *clnt
;
2794 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2796 case -NFS4ERR_BADNAME
:
2799 case -NFS4ERR_MOVED
:
2800 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2802 case -NFS4ERR_WRONGSEC
:
2804 if (client
!= *clnt
)
2807 client
= nfs4_create_sec_client(client
, dir
, name
);
2809 return PTR_ERR(client
);
2811 exception
.retry
= 1;
2814 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2816 } while (exception
.retry
);
2821 else if (client
!= *clnt
)
2822 rpc_shutdown_client(client
);
2827 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2828 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2831 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2833 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2834 if (client
!= NFS_CLIENT(dir
)) {
2835 rpc_shutdown_client(client
);
2836 nfs_fixup_secinfo_attributes(fattr
);
2842 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2843 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2846 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2848 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2850 rpc_shutdown_client(client
);
2851 return ERR_PTR(status
);
2856 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2858 struct nfs_server
*server
= NFS_SERVER(inode
);
2859 struct nfs4_accessargs args
= {
2860 .fh
= NFS_FH(inode
),
2861 .bitmask
= server
->cache_consistency_bitmask
,
2863 struct nfs4_accessres res
= {
2866 struct rpc_message msg
= {
2867 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2870 .rpc_cred
= entry
->cred
,
2872 int mode
= entry
->mask
;
2876 * Determine which access bits we want to ask for...
2878 if (mode
& MAY_READ
)
2879 args
.access
|= NFS4_ACCESS_READ
;
2880 if (S_ISDIR(inode
->i_mode
)) {
2881 if (mode
& MAY_WRITE
)
2882 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2883 if (mode
& MAY_EXEC
)
2884 args
.access
|= NFS4_ACCESS_LOOKUP
;
2886 if (mode
& MAY_WRITE
)
2887 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2888 if (mode
& MAY_EXEC
)
2889 args
.access
|= NFS4_ACCESS_EXECUTE
;
2892 res
.fattr
= nfs_alloc_fattr();
2893 if (res
.fattr
== NULL
)
2896 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2898 nfs_access_set_mask(entry
, res
.access
);
2899 nfs_refresh_inode(inode
, res
.fattr
);
2901 nfs_free_fattr(res
.fattr
);
2905 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2907 struct nfs4_exception exception
= { };
2910 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2911 _nfs4_proc_access(inode
, entry
),
2913 } while (exception
.retry
);
2918 * TODO: For the time being, we don't try to get any attributes
2919 * along with any of the zero-copy operations READ, READDIR,
2922 * In the case of the first three, we want to put the GETATTR
2923 * after the read-type operation -- this is because it is hard
2924 * to predict the length of a GETATTR response in v4, and thus
2925 * align the READ data correctly. This means that the GETATTR
2926 * may end up partially falling into the page cache, and we should
2927 * shift it into the 'tail' of the xdr_buf before processing.
2928 * To do this efficiently, we need to know the total length
2929 * of data received, which doesn't seem to be available outside
2932 * In the case of WRITE, we also want to put the GETATTR after
2933 * the operation -- in this case because we want to make sure
2934 * we get the post-operation mtime and size.
2936 * Both of these changes to the XDR layer would in fact be quite
2937 * minor, but I decided to leave them for a subsequent patch.
2939 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2940 unsigned int pgbase
, unsigned int pglen
)
2942 struct nfs4_readlink args
= {
2943 .fh
= NFS_FH(inode
),
2948 struct nfs4_readlink_res res
;
2949 struct rpc_message msg
= {
2950 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2955 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2958 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2959 unsigned int pgbase
, unsigned int pglen
)
2961 struct nfs4_exception exception
= { };
2964 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2965 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2967 } while (exception
.retry
);
2972 * This is just for mknod. open(O_CREAT) will always do ->open_context().
2975 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2978 struct nfs_open_context
*ctx
;
2979 struct nfs4_state
*state
;
2982 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
2984 return PTR_ERR(ctx
);
2986 sattr
->ia_mode
&= ~current_umask();
2987 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
2988 flags
, sattr
, ctx
->cred
,
2989 &ctx
->mdsthreshold
);
2991 if (IS_ERR(state
)) {
2992 status
= PTR_ERR(state
);
2995 d_add(dentry
, igrab(state
->inode
));
2996 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2999 put_nfs_open_context(ctx
);
3003 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3005 struct nfs_server
*server
= NFS_SERVER(dir
);
3006 struct nfs_removeargs args
= {
3010 struct nfs_removeres res
= {
3013 struct rpc_message msg
= {
3014 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3020 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3022 update_changeattr(dir
, &res
.cinfo
);
3026 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3028 struct nfs4_exception exception
= { };
3031 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3032 _nfs4_proc_remove(dir
, name
),
3034 } while (exception
.retry
);
3038 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3040 struct nfs_server
*server
= NFS_SERVER(dir
);
3041 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3042 struct nfs_removeres
*res
= msg
->rpc_resp
;
3044 res
->server
= server
;
3045 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3046 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3049 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3051 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3052 &data
->args
.seq_args
,
3057 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3059 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
3061 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3063 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3065 update_changeattr(dir
, &res
->cinfo
);
3069 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3071 struct nfs_server
*server
= NFS_SERVER(dir
);
3072 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3073 struct nfs_renameres
*res
= msg
->rpc_resp
;
3075 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3076 res
->server
= server
;
3077 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3080 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3082 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3083 &data
->args
.seq_args
,
3088 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3089 struct inode
*new_dir
)
3091 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3093 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3095 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3098 update_changeattr(old_dir
, &res
->old_cinfo
);
3099 update_changeattr(new_dir
, &res
->new_cinfo
);
3103 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3104 struct inode
*new_dir
, struct qstr
*new_name
)
3106 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3107 struct nfs_renameargs arg
= {
3108 .old_dir
= NFS_FH(old_dir
),
3109 .new_dir
= NFS_FH(new_dir
),
3110 .old_name
= old_name
,
3111 .new_name
= new_name
,
3113 struct nfs_renameres res
= {
3116 struct rpc_message msg
= {
3117 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3121 int status
= -ENOMEM
;
3123 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3125 update_changeattr(old_dir
, &res
.old_cinfo
);
3126 update_changeattr(new_dir
, &res
.new_cinfo
);
3131 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3132 struct inode
*new_dir
, struct qstr
*new_name
)
3134 struct nfs4_exception exception
= { };
3137 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3138 _nfs4_proc_rename(old_dir
, old_name
,
3141 } while (exception
.retry
);
3145 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3147 struct nfs_server
*server
= NFS_SERVER(inode
);
3148 struct nfs4_link_arg arg
= {
3149 .fh
= NFS_FH(inode
),
3150 .dir_fh
= NFS_FH(dir
),
3152 .bitmask
= server
->attr_bitmask
,
3154 struct nfs4_link_res res
= {
3157 struct rpc_message msg
= {
3158 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3162 int status
= -ENOMEM
;
3164 res
.fattr
= nfs_alloc_fattr();
3165 if (res
.fattr
== NULL
)
3168 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3170 update_changeattr(dir
, &res
.cinfo
);
3171 nfs_post_op_update_inode(inode
, res
.fattr
);
3174 nfs_free_fattr(res
.fattr
);
3178 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3180 struct nfs4_exception exception
= { };
3183 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3184 _nfs4_proc_link(inode
, dir
, name
),
3186 } while (exception
.retry
);
3190 struct nfs4_createdata
{
3191 struct rpc_message msg
;
3192 struct nfs4_create_arg arg
;
3193 struct nfs4_create_res res
;
3195 struct nfs_fattr fattr
;
3198 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3199 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3201 struct nfs4_createdata
*data
;
3203 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3205 struct nfs_server
*server
= NFS_SERVER(dir
);
3207 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3208 data
->msg
.rpc_argp
= &data
->arg
;
3209 data
->msg
.rpc_resp
= &data
->res
;
3210 data
->arg
.dir_fh
= NFS_FH(dir
);
3211 data
->arg
.server
= server
;
3212 data
->arg
.name
= name
;
3213 data
->arg
.attrs
= sattr
;
3214 data
->arg
.ftype
= ftype
;
3215 data
->arg
.bitmask
= server
->attr_bitmask
;
3216 data
->res
.server
= server
;
3217 data
->res
.fh
= &data
->fh
;
3218 data
->res
.fattr
= &data
->fattr
;
3219 nfs_fattr_init(data
->res
.fattr
);
3224 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3226 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3227 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3229 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3230 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3235 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3240 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3241 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3243 struct nfs4_createdata
*data
;
3244 int status
= -ENAMETOOLONG
;
3246 if (len
> NFS4_MAXPATHLEN
)
3250 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3254 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3255 data
->arg
.u
.symlink
.pages
= &page
;
3256 data
->arg
.u
.symlink
.len
= len
;
3258 status
= nfs4_do_create(dir
, dentry
, data
);
3260 nfs4_free_createdata(data
);
3265 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3266 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3268 struct nfs4_exception exception
= { };
3271 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3272 _nfs4_proc_symlink(dir
, dentry
, page
,
3275 } while (exception
.retry
);
3279 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3280 struct iattr
*sattr
)
3282 struct nfs4_createdata
*data
;
3283 int status
= -ENOMEM
;
3285 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3289 status
= nfs4_do_create(dir
, dentry
, data
);
3291 nfs4_free_createdata(data
);
3296 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3297 struct iattr
*sattr
)
3299 struct nfs4_exception exception
= { };
3302 sattr
->ia_mode
&= ~current_umask();
3304 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3305 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3307 } while (exception
.retry
);
3311 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3312 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3314 struct inode
*dir
= dentry
->d_inode
;
3315 struct nfs4_readdir_arg args
= {
3320 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3323 struct nfs4_readdir_res res
;
3324 struct rpc_message msg
= {
3325 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3332 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3333 dentry
->d_parent
->d_name
.name
,
3334 dentry
->d_name
.name
,
3335 (unsigned long long)cookie
);
3336 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3337 res
.pgbase
= args
.pgbase
;
3338 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3340 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3341 status
+= args
.pgbase
;
3344 nfs_invalidate_atime(dir
);
3346 dprintk("%s: returns %d\n", __func__
, status
);
3350 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3351 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3353 struct nfs4_exception exception
= { };
3356 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3357 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3358 pages
, count
, plus
),
3360 } while (exception
.retry
);
3364 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3365 struct iattr
*sattr
, dev_t rdev
)
3367 struct nfs4_createdata
*data
;
3368 int mode
= sattr
->ia_mode
;
3369 int status
= -ENOMEM
;
3371 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3376 data
->arg
.ftype
= NF4FIFO
;
3377 else if (S_ISBLK(mode
)) {
3378 data
->arg
.ftype
= NF4BLK
;
3379 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3380 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3382 else if (S_ISCHR(mode
)) {
3383 data
->arg
.ftype
= NF4CHR
;
3384 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3385 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3386 } else if (!S_ISSOCK(mode
)) {
3391 status
= nfs4_do_create(dir
, dentry
, data
);
3393 nfs4_free_createdata(data
);
3398 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3399 struct iattr
*sattr
, dev_t rdev
)
3401 struct nfs4_exception exception
= { };
3404 sattr
->ia_mode
&= ~current_umask();
3406 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3407 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3409 } while (exception
.retry
);
3413 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3414 struct nfs_fsstat
*fsstat
)
3416 struct nfs4_statfs_arg args
= {
3418 .bitmask
= server
->attr_bitmask
,
3420 struct nfs4_statfs_res res
= {
3423 struct rpc_message msg
= {
3424 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3429 nfs_fattr_init(fsstat
->fattr
);
3430 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3433 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3435 struct nfs4_exception exception
= { };
3438 err
= nfs4_handle_exception(server
,
3439 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3441 } while (exception
.retry
);
3445 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3446 struct nfs_fsinfo
*fsinfo
)
3448 struct nfs4_fsinfo_arg args
= {
3450 .bitmask
= server
->attr_bitmask
,
3452 struct nfs4_fsinfo_res res
= {
3455 struct rpc_message msg
= {
3456 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3461 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3464 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3466 struct nfs4_exception exception
= { };
3467 unsigned long now
= jiffies
;
3471 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3473 struct nfs_client
*clp
= server
->nfs_client
;
3475 spin_lock(&clp
->cl_lock
);
3476 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3477 clp
->cl_last_renewal
= now
;
3478 spin_unlock(&clp
->cl_lock
);
3481 err
= nfs4_handle_exception(server
, err
, &exception
);
3482 } while (exception
.retry
);
3486 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3490 nfs_fattr_init(fsinfo
->fattr
);
3491 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3493 /* block layout checks this! */
3494 server
->pnfs_blksize
= fsinfo
->blksize
;
3495 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3501 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3502 struct nfs_pathconf
*pathconf
)
3504 struct nfs4_pathconf_arg args
= {
3506 .bitmask
= server
->attr_bitmask
,
3508 struct nfs4_pathconf_res res
= {
3509 .pathconf
= pathconf
,
3511 struct rpc_message msg
= {
3512 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3517 /* None of the pathconf attributes are mandatory to implement */
3518 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3519 memset(pathconf
, 0, sizeof(*pathconf
));
3523 nfs_fattr_init(pathconf
->fattr
);
3524 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3527 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3528 struct nfs_pathconf
*pathconf
)
3530 struct nfs4_exception exception
= { };
3534 err
= nfs4_handle_exception(server
,
3535 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3537 } while (exception
.retry
);
3541 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3542 const struct nfs_open_context
*ctx
,
3543 const struct nfs_lock_context
*l_ctx
,
3546 const struct nfs_lockowner
*lockowner
= NULL
;
3549 lockowner
= &l_ctx
->lockowner
;
3550 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
3552 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
3554 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
3555 const struct nfs_open_context
*ctx
,
3556 const struct nfs_lock_context
*l_ctx
,
3559 nfs4_stateid current_stateid
;
3561 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
))
3563 return nfs4_stateid_match(stateid
, ¤t_stateid
);
3566 static bool nfs4_error_stateid_expired(int err
)
3569 case -NFS4ERR_DELEG_REVOKED
:
3570 case -NFS4ERR_ADMIN_REVOKED
:
3571 case -NFS4ERR_BAD_STATEID
:
3572 case -NFS4ERR_STALE_STATEID
:
3573 case -NFS4ERR_OLD_STATEID
:
3574 case -NFS4ERR_OPENMODE
:
3575 case -NFS4ERR_EXPIRED
:
3581 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3583 nfs_invalidate_atime(data
->header
->inode
);
3586 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3588 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3590 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3591 rpc_restart_call_prepare(task
);
3595 __nfs4_read_done_cb(data
);
3596 if (task
->tk_status
> 0)
3597 renew_lease(server
, data
->timestamp
);
3601 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
3602 struct nfs_readargs
*args
)
3605 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3606 nfs4_stateid_is_current(&args
->stateid
,
3611 rpc_restart_call_prepare(task
);
3615 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3618 dprintk("--> %s\n", __func__
);
3620 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3622 if (nfs4_read_stateid_changed(task
, &data
->args
))
3624 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3625 nfs4_read_done_cb(task
, data
);
3628 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3630 data
->timestamp
= jiffies
;
3631 data
->read_done_cb
= nfs4_read_done_cb
;
3632 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3633 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3636 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3638 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3639 &data
->args
.seq_args
,
3643 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3644 data
->args
.lock_context
, FMODE_READ
);
3647 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3649 struct inode
*inode
= data
->header
->inode
;
3651 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3652 rpc_restart_call_prepare(task
);
3655 if (task
->tk_status
>= 0) {
3656 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3657 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3662 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
3663 struct nfs_writeargs
*args
)
3666 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3667 nfs4_stateid_is_current(&args
->stateid
,
3672 rpc_restart_call_prepare(task
);
3676 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3678 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3680 if (nfs4_write_stateid_changed(task
, &data
->args
))
3682 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3683 nfs4_write_done_cb(task
, data
);
3687 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3689 const struct nfs_pgio_header
*hdr
= data
->header
;
3691 /* Don't request attributes for pNFS or O_DIRECT writes */
3692 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3694 /* Otherwise, request attributes if and only if we don't hold
3697 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3700 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3702 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3704 if (!nfs4_write_need_cache_consistency_data(data
)) {
3705 data
->args
.bitmask
= NULL
;
3706 data
->res
.fattr
= NULL
;
3708 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3710 if (!data
->write_done_cb
)
3711 data
->write_done_cb
= nfs4_write_done_cb
;
3712 data
->res
.server
= server
;
3713 data
->timestamp
= jiffies
;
3715 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3716 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3719 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3721 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3722 &data
->args
.seq_args
,
3726 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3727 data
->args
.lock_context
, FMODE_WRITE
);
3730 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3732 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3733 &data
->args
.seq_args
,
3738 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3740 struct inode
*inode
= data
->inode
;
3742 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3743 rpc_restart_call_prepare(task
);
3749 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3751 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3753 return data
->commit_done_cb(task
, data
);
3756 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3758 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3760 if (data
->commit_done_cb
== NULL
)
3761 data
->commit_done_cb
= nfs4_commit_done_cb
;
3762 data
->res
.server
= server
;
3763 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3764 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3767 struct nfs4_renewdata
{
3768 struct nfs_client
*client
;
3769 unsigned long timestamp
;
3773 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3774 * standalone procedure for queueing an asynchronous RENEW.
3776 static void nfs4_renew_release(void *calldata
)
3778 struct nfs4_renewdata
*data
= calldata
;
3779 struct nfs_client
*clp
= data
->client
;
3781 if (atomic_read(&clp
->cl_count
) > 1)
3782 nfs4_schedule_state_renewal(clp
);
3783 nfs_put_client(clp
);
3787 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3789 struct nfs4_renewdata
*data
= calldata
;
3790 struct nfs_client
*clp
= data
->client
;
3791 unsigned long timestamp
= data
->timestamp
;
3793 if (task
->tk_status
< 0) {
3794 /* Unless we're shutting down, schedule state recovery! */
3795 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3797 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3798 nfs4_schedule_lease_recovery(clp
);
3801 nfs4_schedule_path_down_recovery(clp
);
3803 do_renew_lease(clp
, timestamp
);
3806 static const struct rpc_call_ops nfs4_renew_ops
= {
3807 .rpc_call_done
= nfs4_renew_done
,
3808 .rpc_release
= nfs4_renew_release
,
3811 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3813 struct rpc_message msg
= {
3814 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3818 struct nfs4_renewdata
*data
;
3820 if (renew_flags
== 0)
3822 if (!atomic_inc_not_zero(&clp
->cl_count
))
3824 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3828 data
->timestamp
= jiffies
;
3829 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3830 &nfs4_renew_ops
, data
);
3833 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3835 struct rpc_message msg
= {
3836 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3840 unsigned long now
= jiffies
;
3843 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3846 do_renew_lease(clp
, now
);
3850 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3852 return (server
->caps
& NFS_CAP_ACLS
)
3853 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3854 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3857 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3858 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3861 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3863 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3864 struct page
**pages
, unsigned int *pgbase
)
3866 struct page
*newpage
, **spages
;
3872 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3873 newpage
= alloc_page(GFP_KERNEL
);
3875 if (newpage
== NULL
)
3877 memcpy(page_address(newpage
), buf
, len
);
3882 } while (buflen
!= 0);
3888 __free_page(spages
[rc
-1]);
3892 struct nfs4_cached_acl
{
3898 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3900 struct nfs_inode
*nfsi
= NFS_I(inode
);
3902 spin_lock(&inode
->i_lock
);
3903 kfree(nfsi
->nfs4_acl
);
3904 nfsi
->nfs4_acl
= acl
;
3905 spin_unlock(&inode
->i_lock
);
3908 static void nfs4_zap_acl_attr(struct inode
*inode
)
3910 nfs4_set_cached_acl(inode
, NULL
);
3913 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3915 struct nfs_inode
*nfsi
= NFS_I(inode
);
3916 struct nfs4_cached_acl
*acl
;
3919 spin_lock(&inode
->i_lock
);
3920 acl
= nfsi
->nfs4_acl
;
3923 if (buf
== NULL
) /* user is just asking for length */
3925 if (acl
->cached
== 0)
3927 ret
= -ERANGE
; /* see getxattr(2) man page */
3928 if (acl
->len
> buflen
)
3930 memcpy(buf
, acl
->data
, acl
->len
);
3934 spin_unlock(&inode
->i_lock
);
3938 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3940 struct nfs4_cached_acl
*acl
;
3941 size_t buflen
= sizeof(*acl
) + acl_len
;
3943 if (buflen
<= PAGE_SIZE
) {
3944 acl
= kmalloc(buflen
, GFP_KERNEL
);
3948 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3950 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3957 nfs4_set_cached_acl(inode
, acl
);
3961 * The getxattr API returns the required buffer length when called with a
3962 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3963 * the required buf. On a NULL buf, we send a page of data to the server
3964 * guessing that the ACL request can be serviced by a page. If so, we cache
3965 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3966 * the cache. If not so, we throw away the page, and cache the required
3967 * length. The next getxattr call will then produce another round trip to
3968 * the server, this time with the input buf of the required size.
3970 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3972 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3973 struct nfs_getaclargs args
= {
3974 .fh
= NFS_FH(inode
),
3978 struct nfs_getaclres res
= {
3981 struct rpc_message msg
= {
3982 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3986 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3987 int ret
= -ENOMEM
, i
;
3989 /* As long as we're doing a round trip to the server anyway,
3990 * let's be prepared for a page of acl data. */
3993 if (npages
> ARRAY_SIZE(pages
))
3996 for (i
= 0; i
< npages
; i
++) {
3997 pages
[i
] = alloc_page(GFP_KERNEL
);
4002 /* for decoding across pages */
4003 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4004 if (!res
.acl_scratch
)
4007 args
.acl_len
= npages
* PAGE_SIZE
;
4008 args
.acl_pgbase
= 0;
4010 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4011 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4012 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4013 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4017 /* Handle the case where the passed-in buffer is too short */
4018 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4019 /* Did the user only issue a request for the acl length? */
4025 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4027 if (res
.acl_len
> buflen
) {
4031 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4036 for (i
= 0; i
< npages
; i
++)
4038 __free_page(pages
[i
]);
4039 if (res
.acl_scratch
)
4040 __free_page(res
.acl_scratch
);
4044 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4046 struct nfs4_exception exception
= { };
4049 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4052 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4053 } while (exception
.retry
);
4057 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4059 struct nfs_server
*server
= NFS_SERVER(inode
);
4062 if (!nfs4_server_supports_acls(server
))
4064 ret
= nfs_revalidate_inode(server
, inode
);
4067 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4068 nfs_zap_acl_cache(inode
);
4069 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4071 /* -ENOENT is returned if there is no ACL or if there is an ACL
4072 * but no cached acl data, just the acl length */
4074 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4077 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4079 struct nfs_server
*server
= NFS_SERVER(inode
);
4080 struct page
*pages
[NFS4ACL_MAXPAGES
];
4081 struct nfs_setaclargs arg
= {
4082 .fh
= NFS_FH(inode
),
4086 struct nfs_setaclres res
;
4087 struct rpc_message msg
= {
4088 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4092 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4095 if (!nfs4_server_supports_acls(server
))
4097 if (npages
> ARRAY_SIZE(pages
))
4099 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4102 nfs4_inode_return_delegation(inode
);
4103 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4106 * Free each page after tx, so the only ref left is
4107 * held by the network stack
4110 put_page(pages
[i
-1]);
4113 * Acl update can result in inode attribute update.
4114 * so mark the attribute cache invalid.
4116 spin_lock(&inode
->i_lock
);
4117 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4118 spin_unlock(&inode
->i_lock
);
4119 nfs_access_zap_cache(inode
);
4120 nfs_zap_acl_cache(inode
);
4124 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4126 struct nfs4_exception exception
= { };
4129 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4130 __nfs4_proc_set_acl(inode
, buf
, buflen
),
4132 } while (exception
.retry
);
4137 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4139 struct nfs_client
*clp
= server
->nfs_client
;
4141 if (task
->tk_status
>= 0)
4143 switch(task
->tk_status
) {
4144 case -NFS4ERR_DELEG_REVOKED
:
4145 case -NFS4ERR_ADMIN_REVOKED
:
4146 case -NFS4ERR_BAD_STATEID
:
4149 nfs_remove_bad_delegation(state
->inode
);
4150 case -NFS4ERR_OPENMODE
:
4153 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4154 goto stateid_invalid
;
4155 goto wait_on_recovery
;
4156 case -NFS4ERR_EXPIRED
:
4157 if (state
!= NULL
) {
4158 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4159 goto stateid_invalid
;
4161 case -NFS4ERR_STALE_STATEID
:
4162 case -NFS4ERR_STALE_CLIENTID
:
4163 nfs4_schedule_lease_recovery(clp
);
4164 goto wait_on_recovery
;
4165 #if defined(CONFIG_NFS_V4_1)
4166 case -NFS4ERR_BADSESSION
:
4167 case -NFS4ERR_BADSLOT
:
4168 case -NFS4ERR_BAD_HIGH_SLOT
:
4169 case -NFS4ERR_DEADSESSION
:
4170 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4171 case -NFS4ERR_SEQ_FALSE_RETRY
:
4172 case -NFS4ERR_SEQ_MISORDERED
:
4173 dprintk("%s ERROR %d, Reset session\n", __func__
,
4175 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4176 task
->tk_status
= 0;
4178 #endif /* CONFIG_NFS_V4_1 */
4179 case -NFS4ERR_DELAY
:
4180 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4181 case -NFS4ERR_GRACE
:
4182 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4183 task
->tk_status
= 0;
4185 case -NFS4ERR_RETRY_UNCACHED_REP
:
4186 case -NFS4ERR_OLD_STATEID
:
4187 task
->tk_status
= 0;
4190 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4193 task
->tk_status
= -EIO
;
4196 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4197 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4198 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4199 task
->tk_status
= 0;
4203 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4204 nfs4_verifier
*bootverf
)
4208 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4209 /* An impossible timestamp guarantees this value
4210 * will never match a generated boot time. */
4212 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4214 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4215 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4216 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4218 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4222 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4223 char *buf
, size_t len
)
4225 unsigned int result
;
4228 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4230 rpc_peeraddr2str(clp
->cl_rpcclient
,
4232 rpc_peeraddr2str(clp
->cl_rpcclient
,
4233 RPC_DISPLAY_PROTO
));
4239 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4240 char *buf
, size_t len
)
4242 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4244 if (nfs4_client_id_uniquifier
[0] != '\0')
4245 nodename
= nfs4_client_id_uniquifier
;
4246 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4247 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4252 * nfs4_proc_setclientid - Negotiate client ID
4253 * @clp: state data structure
4254 * @program: RPC program for NFSv4 callback service
4255 * @port: IP port number for NFS4 callback service
4256 * @cred: RPC credential to use for this call
4257 * @res: where to place the result
4259 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4261 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4262 unsigned short port
, struct rpc_cred
*cred
,
4263 struct nfs4_setclientid_res
*res
)
4265 nfs4_verifier sc_verifier
;
4266 struct nfs4_setclientid setclientid
= {
4267 .sc_verifier
= &sc_verifier
,
4269 .sc_cb_ident
= clp
->cl_cb_ident
,
4271 struct rpc_message msg
= {
4272 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4273 .rpc_argp
= &setclientid
,
4279 /* nfs_client_id4 */
4280 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4281 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4282 setclientid
.sc_name_len
=
4283 nfs4_init_uniform_client_string(clp
,
4284 setclientid
.sc_name
,
4285 sizeof(setclientid
.sc_name
));
4287 setclientid
.sc_name_len
=
4288 nfs4_init_nonuniform_client_string(clp
,
4289 setclientid
.sc_name
,
4290 sizeof(setclientid
.sc_name
));
4293 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4294 sizeof(setclientid
.sc_netid
),
4295 rpc_peeraddr2str(clp
->cl_rpcclient
,
4296 RPC_DISPLAY_NETID
));
4298 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4299 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4300 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4302 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4303 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4304 setclientid
.sc_name_len
, setclientid
.sc_name
);
4305 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4306 dprintk("NFS reply setclientid: %d\n", status
);
4311 * nfs4_proc_setclientid_confirm - Confirm client ID
4312 * @clp: state data structure
4313 * @res: result of a previous SETCLIENTID
4314 * @cred: RPC credential to use for this call
4316 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4318 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4319 struct nfs4_setclientid_res
*arg
,
4320 struct rpc_cred
*cred
)
4322 struct rpc_message msg
= {
4323 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4329 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4330 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4332 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4333 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4337 struct nfs4_delegreturndata
{
4338 struct nfs4_delegreturnargs args
;
4339 struct nfs4_delegreturnres res
;
4341 nfs4_stateid stateid
;
4342 unsigned long timestamp
;
4343 struct nfs_fattr fattr
;
4347 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4349 struct nfs4_delegreturndata
*data
= calldata
;
4351 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4354 switch (task
->tk_status
) {
4355 case -NFS4ERR_STALE_STATEID
:
4356 case -NFS4ERR_EXPIRED
:
4358 renew_lease(data
->res
.server
, data
->timestamp
);
4361 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4363 rpc_restart_call_prepare(task
);
4367 data
->rpc_status
= task
->tk_status
;
4370 static void nfs4_delegreturn_release(void *calldata
)
4375 #if defined(CONFIG_NFS_V4_1)
4376 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4378 struct nfs4_delegreturndata
*d_data
;
4380 d_data
= (struct nfs4_delegreturndata
*)data
;
4382 nfs4_setup_sequence(d_data
->res
.server
,
4383 &d_data
->args
.seq_args
,
4384 &d_data
->res
.seq_res
,
4387 #endif /* CONFIG_NFS_V4_1 */
4389 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4390 #if defined(CONFIG_NFS_V4_1)
4391 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4392 #endif /* CONFIG_NFS_V4_1 */
4393 .rpc_call_done
= nfs4_delegreturn_done
,
4394 .rpc_release
= nfs4_delegreturn_release
,
4397 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4399 struct nfs4_delegreturndata
*data
;
4400 struct nfs_server
*server
= NFS_SERVER(inode
);
4401 struct rpc_task
*task
;
4402 struct rpc_message msg
= {
4403 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4406 struct rpc_task_setup task_setup_data
= {
4407 .rpc_client
= server
->client
,
4408 .rpc_message
= &msg
,
4409 .callback_ops
= &nfs4_delegreturn_ops
,
4410 .flags
= RPC_TASK_ASYNC
,
4414 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4417 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4418 data
->args
.fhandle
= &data
->fh
;
4419 data
->args
.stateid
= &data
->stateid
;
4420 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4421 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4422 nfs4_stateid_copy(&data
->stateid
, stateid
);
4423 data
->res
.fattr
= &data
->fattr
;
4424 data
->res
.server
= server
;
4425 nfs_fattr_init(data
->res
.fattr
);
4426 data
->timestamp
= jiffies
;
4427 data
->rpc_status
= 0;
4429 task_setup_data
.callback_data
= data
;
4430 msg
.rpc_argp
= &data
->args
;
4431 msg
.rpc_resp
= &data
->res
;
4432 task
= rpc_run_task(&task_setup_data
);
4434 return PTR_ERR(task
);
4437 status
= nfs4_wait_for_completion_rpc_task(task
);
4440 status
= data
->rpc_status
;
4442 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4444 nfs_refresh_inode(inode
, &data
->fattr
);
4450 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4452 struct nfs_server
*server
= NFS_SERVER(inode
);
4453 struct nfs4_exception exception
= { };
4456 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4458 case -NFS4ERR_STALE_STATEID
:
4459 case -NFS4ERR_EXPIRED
:
4463 err
= nfs4_handle_exception(server
, err
, &exception
);
4464 } while (exception
.retry
);
4468 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4469 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4472 * sleep, with exponential backoff, and retry the LOCK operation.
4474 static unsigned long
4475 nfs4_set_lock_task_retry(unsigned long timeout
)
4477 freezable_schedule_timeout_killable(timeout
);
4479 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4480 return NFS4_LOCK_MAXTIMEOUT
;
4484 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4486 struct inode
*inode
= state
->inode
;
4487 struct nfs_server
*server
= NFS_SERVER(inode
);
4488 struct nfs_client
*clp
= server
->nfs_client
;
4489 struct nfs_lockt_args arg
= {
4490 .fh
= NFS_FH(inode
),
4493 struct nfs_lockt_res res
= {
4496 struct rpc_message msg
= {
4497 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4500 .rpc_cred
= state
->owner
->so_cred
,
4502 struct nfs4_lock_state
*lsp
;
4505 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4506 status
= nfs4_set_lock_state(state
, request
);
4509 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4510 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4511 arg
.lock_owner
.s_dev
= server
->s_dev
;
4512 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4515 request
->fl_type
= F_UNLCK
;
4517 case -NFS4ERR_DENIED
:
4520 request
->fl_ops
->fl_release_private(request
);
4525 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4527 struct nfs4_exception exception
= { };
4531 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4532 _nfs4_proc_getlk(state
, cmd
, request
),
4534 } while (exception
.retry
);
4538 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4541 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4543 res
= posix_lock_file_wait(file
, fl
);
4546 res
= flock_lock_file_wait(file
, fl
);
4554 struct nfs4_unlockdata
{
4555 struct nfs_locku_args arg
;
4556 struct nfs_locku_res res
;
4557 struct nfs4_lock_state
*lsp
;
4558 struct nfs_open_context
*ctx
;
4559 struct file_lock fl
;
4560 const struct nfs_server
*server
;
4561 unsigned long timestamp
;
4564 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4565 struct nfs_open_context
*ctx
,
4566 struct nfs4_lock_state
*lsp
,
4567 struct nfs_seqid
*seqid
)
4569 struct nfs4_unlockdata
*p
;
4570 struct inode
*inode
= lsp
->ls_state
->inode
;
4572 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4575 p
->arg
.fh
= NFS_FH(inode
);
4577 p
->arg
.seqid
= seqid
;
4578 p
->res
.seqid
= seqid
;
4579 p
->arg
.stateid
= &lsp
->ls_stateid
;
4581 atomic_inc(&lsp
->ls_count
);
4582 /* Ensure we don't close file until we're done freeing locks! */
4583 p
->ctx
= get_nfs_open_context(ctx
);
4584 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4585 p
->server
= NFS_SERVER(inode
);
4589 static void nfs4_locku_release_calldata(void *data
)
4591 struct nfs4_unlockdata
*calldata
= data
;
4592 nfs_free_seqid(calldata
->arg
.seqid
);
4593 nfs4_put_lock_state(calldata
->lsp
);
4594 put_nfs_open_context(calldata
->ctx
);
4598 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4600 struct nfs4_unlockdata
*calldata
= data
;
4602 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4604 switch (task
->tk_status
) {
4606 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4607 &calldata
->res
.stateid
);
4608 renew_lease(calldata
->server
, calldata
->timestamp
);
4610 case -NFS4ERR_BAD_STATEID
:
4611 case -NFS4ERR_OLD_STATEID
:
4612 case -NFS4ERR_STALE_STATEID
:
4613 case -NFS4ERR_EXPIRED
:
4616 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4617 rpc_restart_call_prepare(task
);
4619 nfs_release_seqid(calldata
->arg
.seqid
);
4622 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4624 struct nfs4_unlockdata
*calldata
= data
;
4626 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4628 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4629 /* Note: exit _without_ running nfs4_locku_done */
4632 calldata
->timestamp
= jiffies
;
4633 if (nfs4_setup_sequence(calldata
->server
,
4634 &calldata
->arg
.seq_args
,
4635 &calldata
->res
.seq_res
,
4637 nfs_release_seqid(calldata
->arg
.seqid
);
4640 task
->tk_action
= NULL
;
4642 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
4645 static const struct rpc_call_ops nfs4_locku_ops
= {
4646 .rpc_call_prepare
= nfs4_locku_prepare
,
4647 .rpc_call_done
= nfs4_locku_done
,
4648 .rpc_release
= nfs4_locku_release_calldata
,
4651 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4652 struct nfs_open_context
*ctx
,
4653 struct nfs4_lock_state
*lsp
,
4654 struct nfs_seqid
*seqid
)
4656 struct nfs4_unlockdata
*data
;
4657 struct rpc_message msg
= {
4658 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4659 .rpc_cred
= ctx
->cred
,
4661 struct rpc_task_setup task_setup_data
= {
4662 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4663 .rpc_message
= &msg
,
4664 .callback_ops
= &nfs4_locku_ops
,
4665 .workqueue
= nfsiod_workqueue
,
4666 .flags
= RPC_TASK_ASYNC
,
4669 /* Ensure this is an unlock - when canceling a lock, the
4670 * canceled lock is passed in, and it won't be an unlock.
4672 fl
->fl_type
= F_UNLCK
;
4674 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4676 nfs_free_seqid(seqid
);
4677 return ERR_PTR(-ENOMEM
);
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 return rpc_run_task(&task_setup_data
);
4687 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4689 struct inode
*inode
= state
->inode
;
4690 struct nfs4_state_owner
*sp
= state
->owner
;
4691 struct nfs_inode
*nfsi
= NFS_I(inode
);
4692 struct nfs_seqid
*seqid
;
4693 struct nfs4_lock_state
*lsp
;
4694 struct rpc_task
*task
;
4696 unsigned char fl_flags
= request
->fl_flags
;
4698 status
= nfs4_set_lock_state(state
, request
);
4699 /* Unlock _before_ we do the RPC call */
4700 request
->fl_flags
|= FL_EXISTS
;
4701 /* Exclude nfs_delegation_claim_locks() */
4702 mutex_lock(&sp
->so_delegreturn_mutex
);
4703 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
4704 down_read(&nfsi
->rwsem
);
4705 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4706 up_read(&nfsi
->rwsem
);
4707 mutex_unlock(&sp
->so_delegreturn_mutex
);
4710 up_read(&nfsi
->rwsem
);
4711 mutex_unlock(&sp
->so_delegreturn_mutex
);
4714 /* Is this a delegated lock? */
4715 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4717 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4718 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4722 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4723 status
= PTR_ERR(task
);
4726 status
= nfs4_wait_for_completion_rpc_task(task
);
4729 request
->fl_flags
= fl_flags
;
4733 struct nfs4_lockdata
{
4734 struct nfs_lock_args arg
;
4735 struct nfs_lock_res res
;
4736 struct nfs4_lock_state
*lsp
;
4737 struct nfs_open_context
*ctx
;
4738 struct file_lock fl
;
4739 unsigned long timestamp
;
4742 struct nfs_server
*server
;
4745 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4746 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4749 struct nfs4_lockdata
*p
;
4750 struct inode
*inode
= lsp
->ls_state
->inode
;
4751 struct nfs_server
*server
= NFS_SERVER(inode
);
4753 p
= kzalloc(sizeof(*p
), gfp_mask
);
4757 p
->arg
.fh
= NFS_FH(inode
);
4759 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4760 if (p
->arg
.open_seqid
== NULL
)
4762 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4763 if (p
->arg
.lock_seqid
== NULL
)
4764 goto out_free_seqid
;
4765 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4766 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4767 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4768 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4769 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4772 atomic_inc(&lsp
->ls_count
);
4773 p
->ctx
= get_nfs_open_context(ctx
);
4774 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4777 nfs_free_seqid(p
->arg
.open_seqid
);
4783 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4785 struct nfs4_lockdata
*data
= calldata
;
4786 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4788 dprintk("%s: begin!\n", __func__
);
4789 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4791 /* Do we need to do an open_to_lock_owner? */
4792 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4793 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
4794 goto out_release_lock_seqid
;
4796 data
->arg
.open_stateid
= &state
->stateid
;
4797 data
->arg
.new_lock_owner
= 1;
4798 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4800 data
->arg
.new_lock_owner
= 0;
4801 if (!nfs4_valid_open_stateid(state
)) {
4802 data
->rpc_status
= -EBADF
;
4803 task
->tk_action
= NULL
;
4804 goto out_release_open_seqid
;
4806 data
->timestamp
= jiffies
;
4807 if (nfs4_setup_sequence(data
->server
,
4808 &data
->arg
.seq_args
,
4812 out_release_open_seqid
:
4813 nfs_release_seqid(data
->arg
.open_seqid
);
4814 out_release_lock_seqid
:
4815 nfs_release_seqid(data
->arg
.lock_seqid
);
4817 nfs4_sequence_done(task
, &data
->res
.seq_res
);
4818 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4821 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4823 struct nfs4_lockdata
*data
= calldata
;
4825 dprintk("%s: begin!\n", __func__
);
4827 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4830 data
->rpc_status
= task
->tk_status
;
4831 if (data
->arg
.new_lock_owner
!= 0) {
4832 if (data
->rpc_status
== 0)
4833 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4837 if (data
->rpc_status
== 0) {
4838 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4839 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4840 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4843 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4846 static void nfs4_lock_release(void *calldata
)
4848 struct nfs4_lockdata
*data
= calldata
;
4850 dprintk("%s: begin!\n", __func__
);
4851 nfs_free_seqid(data
->arg
.open_seqid
);
4852 if (data
->cancelled
!= 0) {
4853 struct rpc_task
*task
;
4854 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4855 data
->arg
.lock_seqid
);
4857 rpc_put_task_async(task
);
4858 dprintk("%s: cancelling lock!\n", __func__
);
4860 nfs_free_seqid(data
->arg
.lock_seqid
);
4861 nfs4_put_lock_state(data
->lsp
);
4862 put_nfs_open_context(data
->ctx
);
4864 dprintk("%s: done!\n", __func__
);
4867 static const struct rpc_call_ops nfs4_lock_ops
= {
4868 .rpc_call_prepare
= nfs4_lock_prepare
,
4869 .rpc_call_done
= nfs4_lock_done
,
4870 .rpc_release
= nfs4_lock_release
,
4873 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4876 case -NFS4ERR_ADMIN_REVOKED
:
4877 case -NFS4ERR_BAD_STATEID
:
4878 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4879 if (new_lock_owner
!= 0 ||
4880 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4881 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4883 case -NFS4ERR_STALE_STATEID
:
4884 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4885 case -NFS4ERR_EXPIRED
:
4886 nfs4_schedule_lease_recovery(server
->nfs_client
);
4890 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4892 struct nfs4_lockdata
*data
;
4893 struct rpc_task
*task
;
4894 struct rpc_message msg
= {
4895 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4896 .rpc_cred
= state
->owner
->so_cred
,
4898 struct rpc_task_setup task_setup_data
= {
4899 .rpc_client
= NFS_CLIENT(state
->inode
),
4900 .rpc_message
= &msg
,
4901 .callback_ops
= &nfs4_lock_ops
,
4902 .workqueue
= nfsiod_workqueue
,
4903 .flags
= RPC_TASK_ASYNC
,
4907 dprintk("%s: begin!\n", __func__
);
4908 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4909 fl
->fl_u
.nfs4_fl
.owner
,
4910 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4914 data
->arg
.block
= 1;
4915 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4916 msg
.rpc_argp
= &data
->arg
;
4917 msg
.rpc_resp
= &data
->res
;
4918 task_setup_data
.callback_data
= data
;
4919 if (recovery_type
> NFS_LOCK_NEW
) {
4920 if (recovery_type
== NFS_LOCK_RECLAIM
)
4921 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4922 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
4924 task
= rpc_run_task(&task_setup_data
);
4926 return PTR_ERR(task
);
4927 ret
= nfs4_wait_for_completion_rpc_task(task
);
4929 ret
= data
->rpc_status
;
4931 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4932 data
->arg
.new_lock_owner
, ret
);
4934 data
->cancelled
= 1;
4936 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4940 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4942 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4943 struct nfs4_exception exception
= {
4944 .inode
= state
->inode
,
4949 /* Cache the lock if possible... */
4950 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4952 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4953 if (err
!= -NFS4ERR_DELAY
)
4955 nfs4_handle_exception(server
, err
, &exception
);
4956 } while (exception
.retry
);
4960 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4962 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4963 struct nfs4_exception exception
= {
4964 .inode
= state
->inode
,
4968 err
= nfs4_set_lock_state(state
, request
);
4972 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4974 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4978 case -NFS4ERR_GRACE
:
4979 case -NFS4ERR_DELAY
:
4980 nfs4_handle_exception(server
, err
, &exception
);
4983 } while (exception
.retry
);
4988 #if defined(CONFIG_NFS_V4_1)
4990 * nfs41_check_expired_locks - possibly free a lock stateid
4992 * @state: NFSv4 state for an inode
4994 * Returns NFS_OK if recovery for this stateid is now finished.
4995 * Otherwise a negative NFS4ERR value is returned.
4997 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4999 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5000 struct nfs4_lock_state
*lsp
;
5001 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5003 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5004 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5005 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
5006 if (status
!= NFS_OK
) {
5007 /* Free the stateid unless the server
5008 * informs us the stateid is unrecognized. */
5009 if (status
!= -NFS4ERR_BAD_STATEID
)
5010 nfs41_free_stateid(server
,
5012 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5021 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5023 int status
= NFS_OK
;
5025 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5026 status
= nfs41_check_expired_locks(state
);
5027 if (status
!= NFS_OK
)
5028 status
= nfs4_lock_expired(state
, request
);
5033 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5035 struct nfs4_state_owner
*sp
= state
->owner
;
5036 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5037 unsigned char fl_flags
= request
->fl_flags
;
5039 int status
= -ENOLCK
;
5041 if ((fl_flags
& FL_POSIX
) &&
5042 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5044 /* Is this a delegated open? */
5045 status
= nfs4_set_lock_state(state
, request
);
5048 request
->fl_flags
|= FL_ACCESS
;
5049 status
= do_vfs_lock(request
->fl_file
, request
);
5052 down_read(&nfsi
->rwsem
);
5053 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5054 /* Yes: cache locks! */
5055 /* ...but avoid races with delegation recall... */
5056 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5057 status
= do_vfs_lock(request
->fl_file
, request
);
5060 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5061 up_read(&nfsi
->rwsem
);
5062 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5065 down_read(&nfsi
->rwsem
);
5066 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5067 status
= -NFS4ERR_DELAY
;
5070 /* Note: we always want to sleep here! */
5071 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5072 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5073 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5074 "manager!\n", __func__
);
5076 up_read(&nfsi
->rwsem
);
5078 request
->fl_flags
= fl_flags
;
5082 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5084 struct nfs4_exception exception
= {
5086 .inode
= state
->inode
,
5091 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5092 if (err
== -NFS4ERR_DENIED
)
5094 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5096 } while (exception
.retry
);
5101 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5103 struct nfs_open_context
*ctx
;
5104 struct nfs4_state
*state
;
5105 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5108 /* verify open state */
5109 ctx
= nfs_file_open_context(filp
);
5112 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5115 if (IS_GETLK(cmd
)) {
5117 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5121 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5124 if (request
->fl_type
== F_UNLCK
) {
5126 return nfs4_proc_unlck(state
, cmd
, request
);
5133 * Don't rely on the VFS having checked the file open mode,
5134 * since it won't do this for flock() locks.
5136 switch (request
->fl_type
) {
5138 if (!(filp
->f_mode
& FMODE_READ
))
5142 if (!(filp
->f_mode
& FMODE_WRITE
))
5147 status
= nfs4_proc_setlk(state
, cmd
, request
);
5148 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5150 timeout
= nfs4_set_lock_task_retry(timeout
);
5151 status
= -ERESTARTSYS
;
5154 } while(status
< 0);
5158 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
5160 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5161 struct nfs4_exception exception
= { };
5164 err
= nfs4_set_lock_state(state
, fl
);
5168 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5171 printk(KERN_ERR
"NFS: %s: unhandled error "
5172 "%d.\n", __func__
, err
);
5176 case -NFS4ERR_STALE_CLIENTID
:
5177 case -NFS4ERR_STALE_STATEID
:
5178 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5179 case -NFS4ERR_EXPIRED
:
5180 nfs4_schedule_lease_recovery(server
->nfs_client
);
5183 case -NFS4ERR_BADSESSION
:
5184 case -NFS4ERR_BADSLOT
:
5185 case -NFS4ERR_BAD_HIGH_SLOT
:
5186 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
5187 case -NFS4ERR_DEADSESSION
:
5188 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5189 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
5192 case -NFS4ERR_DELEG_REVOKED
:
5193 case -NFS4ERR_ADMIN_REVOKED
:
5194 case -NFS4ERR_BAD_STATEID
:
5195 case -NFS4ERR_OPENMODE
:
5196 nfs4_schedule_stateid_recovery(server
, state
);
5200 case -NFS4ERR_DENIED
:
5201 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
5205 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5206 err
= nfs4_handle_exception(server
, err
, &exception
);
5207 } while (exception
.retry
);
5212 struct nfs_release_lockowner_data
{
5213 struct nfs4_lock_state
*lsp
;
5214 struct nfs_server
*server
;
5215 struct nfs_release_lockowner_args args
;
5218 static void nfs4_release_lockowner_release(void *calldata
)
5220 struct nfs_release_lockowner_data
*data
= calldata
;
5221 nfs4_free_lock_state(data
->server
, data
->lsp
);
5225 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5226 .rpc_release
= nfs4_release_lockowner_release
,
5229 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
5231 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
5232 struct nfs_release_lockowner_data
*data
;
5233 struct rpc_message msg
= {
5234 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5237 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5239 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5243 data
->server
= server
;
5244 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5245 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5246 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5247 msg
.rpc_argp
= &data
->args
;
5248 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5252 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5254 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5255 const void *buf
, size_t buflen
,
5256 int flags
, int type
)
5258 if (strcmp(key
, "") != 0)
5261 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5264 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5265 void *buf
, size_t buflen
, int type
)
5267 if (strcmp(key
, "") != 0)
5270 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5273 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5274 size_t list_len
, const char *name
,
5275 size_t name_len
, int type
)
5277 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5279 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5282 if (list
&& len
<= list_len
)
5283 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5288 * nfs_fhget will use either the mounted_on_fileid or the fileid
5290 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5292 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5293 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5294 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5295 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5298 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5299 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5300 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5304 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5305 const struct qstr
*name
,
5306 struct nfs4_fs_locations
*fs_locations
,
5309 struct nfs_server
*server
= NFS_SERVER(dir
);
5311 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5313 struct nfs4_fs_locations_arg args
= {
5314 .dir_fh
= NFS_FH(dir
),
5319 struct nfs4_fs_locations_res res
= {
5320 .fs_locations
= fs_locations
,
5322 struct rpc_message msg
= {
5323 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5329 dprintk("%s: start\n", __func__
);
5331 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5332 * is not supported */
5333 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5334 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5336 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5338 nfs_fattr_init(&fs_locations
->fattr
);
5339 fs_locations
->server
= server
;
5340 fs_locations
->nlocations
= 0;
5341 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5342 dprintk("%s: returned status = %d\n", __func__
, status
);
5346 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5347 const struct qstr
*name
,
5348 struct nfs4_fs_locations
*fs_locations
,
5351 struct nfs4_exception exception
= { };
5354 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5355 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5357 } while (exception
.retry
);
5361 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5364 struct nfs4_secinfo_arg args
= {
5365 .dir_fh
= NFS_FH(dir
),
5368 struct nfs4_secinfo_res res
= {
5371 struct rpc_message msg
= {
5372 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5377 dprintk("NFS call secinfo %s\n", name
->name
);
5378 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5379 dprintk("NFS reply secinfo: %d\n", status
);
5383 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5384 struct nfs4_secinfo_flavors
*flavors
)
5386 struct nfs4_exception exception
= { };
5389 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5390 _nfs4_proc_secinfo(dir
, name
, flavors
),
5392 } while (exception
.retry
);
5396 #ifdef CONFIG_NFS_V4_1
5398 * Check the exchange flags returned by the server for invalid flags, having
5399 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5402 static int nfs4_check_cl_exchange_flags(u32 flags
)
5404 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5406 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5407 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5409 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5413 return -NFS4ERR_INVAL
;
5417 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5418 struct nfs41_server_scope
*b
)
5420 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5421 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5428 * nfs4_proc_bind_conn_to_session()
5430 * The 4.1 client currently uses the same TCP connection for the
5431 * fore and backchannel.
5433 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5436 struct nfs41_bind_conn_to_session_res res
;
5437 struct rpc_message msg
= {
5439 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5445 dprintk("--> %s\n", __func__
);
5447 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5448 if (unlikely(res
.session
== NULL
)) {
5453 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5455 if (memcmp(res
.session
->sess_id
.data
,
5456 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5457 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5461 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5462 dprintk("NFS: %s: Unexpected direction from server\n",
5467 if (res
.use_conn_in_rdma_mode
) {
5468 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5477 dprintk("<-- %s status= %d\n", __func__
, status
);
5482 * nfs4_proc_exchange_id()
5484 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5486 * Since the clientid has expired, all compounds using sessions
5487 * associated with the stale clientid will be returning
5488 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5489 * be in some phase of session reset.
5491 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5493 nfs4_verifier verifier
;
5494 struct nfs41_exchange_id_args args
= {
5495 .verifier
= &verifier
,
5497 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5499 struct nfs41_exchange_id_res res
= {
5503 struct rpc_message msg
= {
5504 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5510 nfs4_init_boot_verifier(clp
, &verifier
);
5511 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5513 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5514 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5515 args
.id_len
, args
.id
);
5517 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5519 if (unlikely(res
.server_owner
== NULL
)) {
5524 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5526 if (unlikely(res
.server_scope
== NULL
)) {
5528 goto out_server_owner
;
5531 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5532 if (unlikely(res
.impl_id
== NULL
)) {
5534 goto out_server_scope
;
5537 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5539 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5542 clp
->cl_clientid
= res
.clientid
;
5543 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5544 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5545 clp
->cl_seqid
= res
.seqid
;
5547 kfree(clp
->cl_serverowner
);
5548 clp
->cl_serverowner
= res
.server_owner
;
5549 res
.server_owner
= NULL
;
5551 /* use the most recent implementation id */
5552 kfree(clp
->cl_implid
);
5553 clp
->cl_implid
= res
.impl_id
;
5555 if (clp
->cl_serverscope
!= NULL
&&
5556 !nfs41_same_server_scope(clp
->cl_serverscope
,
5557 res
.server_scope
)) {
5558 dprintk("%s: server_scope mismatch detected\n",
5560 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5561 kfree(clp
->cl_serverscope
);
5562 clp
->cl_serverscope
= NULL
;
5565 if (clp
->cl_serverscope
== NULL
) {
5566 clp
->cl_serverscope
= res
.server_scope
;
5573 kfree(res
.server_owner
);
5575 kfree(res
.server_scope
);
5577 if (clp
->cl_implid
!= NULL
)
5578 dprintk("NFS reply exchange_id: Server Implementation ID: "
5579 "domain: %s, name: %s, date: %llu,%u\n",
5580 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5581 clp
->cl_implid
->date
.seconds
,
5582 clp
->cl_implid
->date
.nseconds
);
5583 dprintk("NFS reply exchange_id: %d\n", status
);
5587 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5588 struct rpc_cred
*cred
)
5590 struct rpc_message msg
= {
5591 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5597 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5599 dprintk("NFS: Got error %d from the server %s on "
5600 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5604 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5605 struct rpc_cred
*cred
)
5610 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5611 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5613 case -NFS4ERR_DELAY
:
5614 case -NFS4ERR_CLIENTID_BUSY
:
5624 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5626 struct rpc_cred
*cred
;
5629 if (clp
->cl_mvops
->minor_version
< 1)
5631 if (clp
->cl_exchange_flags
== 0)
5633 if (clp
->cl_preserve_clid
)
5635 cred
= nfs4_get_exchange_id_cred(clp
);
5636 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5641 case -NFS4ERR_STALE_CLIENTID
:
5642 clp
->cl_exchange_flags
= 0;
5648 struct nfs4_get_lease_time_data
{
5649 struct nfs4_get_lease_time_args
*args
;
5650 struct nfs4_get_lease_time_res
*res
;
5651 struct nfs_client
*clp
;
5654 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5657 struct nfs4_get_lease_time_data
*data
=
5658 (struct nfs4_get_lease_time_data
*)calldata
;
5660 dprintk("--> %s\n", __func__
);
5661 /* just setup sequence, do not trigger session recovery
5662 since we're invoked within one */
5663 nfs41_setup_sequence(data
->clp
->cl_session
,
5664 &data
->args
->la_seq_args
,
5665 &data
->res
->lr_seq_res
,
5667 dprintk("<-- %s\n", __func__
);
5671 * Called from nfs4_state_manager thread for session setup, so don't recover
5672 * from sequence operation or clientid errors.
5674 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5676 struct nfs4_get_lease_time_data
*data
=
5677 (struct nfs4_get_lease_time_data
*)calldata
;
5679 dprintk("--> %s\n", __func__
);
5680 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5682 switch (task
->tk_status
) {
5683 case -NFS4ERR_DELAY
:
5684 case -NFS4ERR_GRACE
:
5685 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5686 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5687 task
->tk_status
= 0;
5689 case -NFS4ERR_RETRY_UNCACHED_REP
:
5690 rpc_restart_call_prepare(task
);
5693 dprintk("<-- %s\n", __func__
);
5696 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5697 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5698 .rpc_call_done
= nfs4_get_lease_time_done
,
5701 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5703 struct rpc_task
*task
;
5704 struct nfs4_get_lease_time_args args
;
5705 struct nfs4_get_lease_time_res res
= {
5706 .lr_fsinfo
= fsinfo
,
5708 struct nfs4_get_lease_time_data data
= {
5713 struct rpc_message msg
= {
5714 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5718 struct rpc_task_setup task_setup
= {
5719 .rpc_client
= clp
->cl_rpcclient
,
5720 .rpc_message
= &msg
,
5721 .callback_ops
= &nfs4_get_lease_time_ops
,
5722 .callback_data
= &data
,
5723 .flags
= RPC_TASK_TIMEOUT
,
5727 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5728 nfs4_set_sequence_privileged(&args
.la_seq_args
);
5729 dprintk("--> %s\n", __func__
);
5730 task
= rpc_run_task(&task_setup
);
5733 status
= PTR_ERR(task
);
5735 status
= task
->tk_status
;
5738 dprintk("<-- %s return %d\n", __func__
, status
);
5744 * Initialize the values to be used by the client in CREATE_SESSION
5745 * If nfs4_init_session set the fore channel request and response sizes,
5748 * Set the back channel max_resp_sz_cached to zero to force the client to
5749 * always set csa_cachethis to FALSE because the current implementation
5750 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5752 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5754 struct nfs4_session
*session
= args
->client
->cl_session
;
5755 unsigned int mxrqst_sz
= session
->fc_target_max_rqst_sz
,
5756 mxresp_sz
= session
->fc_target_max_resp_sz
;
5759 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5761 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5762 /* Fore channel attributes */
5763 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5764 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5765 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5766 args
->fc_attrs
.max_reqs
= max_session_slots
;
5768 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5769 "max_ops=%u max_reqs=%u\n",
5771 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5772 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5774 /* Back channel attributes */
5775 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5776 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5777 args
->bc_attrs
.max_resp_sz_cached
= 0;
5778 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5779 args
->bc_attrs
.max_reqs
= 1;
5781 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5782 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5784 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5785 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5786 args
->bc_attrs
.max_reqs
);
5789 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5791 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5792 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5794 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5797 * Our requested max_ops is the minimum we need; we're not
5798 * prepared to break up compounds into smaller pieces than that.
5799 * So, no point even trying to continue if the server won't
5802 if (rcvd
->max_ops
< sent
->max_ops
)
5804 if (rcvd
->max_reqs
== 0)
5806 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5807 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5811 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5813 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5814 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5816 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5818 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5820 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5822 /* These would render the backchannel useless: */
5823 if (rcvd
->max_ops
!= sent
->max_ops
)
5825 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5830 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5831 struct nfs4_session
*session
)
5835 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5838 return nfs4_verify_back_channel_attrs(args
, session
);
5841 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5842 struct rpc_cred
*cred
)
5844 struct nfs4_session
*session
= clp
->cl_session
;
5845 struct nfs41_create_session_args args
= {
5847 .cb_program
= NFS4_CALLBACK
,
5849 struct nfs41_create_session_res res
= {
5852 struct rpc_message msg
= {
5853 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5860 nfs4_init_channel_attrs(&args
);
5861 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5863 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5866 /* Verify the session's negotiated channel_attrs values */
5867 status
= nfs4_verify_channel_attrs(&args
, session
);
5868 /* Increment the clientid slot sequence id */
5876 * Issues a CREATE_SESSION operation to the server.
5877 * It is the responsibility of the caller to verify the session is
5878 * expired before calling this routine.
5880 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5884 struct nfs4_session
*session
= clp
->cl_session
;
5886 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5888 status
= _nfs4_proc_create_session(clp
, cred
);
5892 /* Init or reset the session slot tables */
5893 status
= nfs4_setup_session_slot_tables(session
);
5894 dprintk("slot table setup returned %d\n", status
);
5898 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5899 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5900 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5902 dprintk("<-- %s\n", __func__
);
5907 * Issue the over-the-wire RPC DESTROY_SESSION.
5908 * The caller must serialize access to this routine.
5910 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5911 struct rpc_cred
*cred
)
5913 struct rpc_message msg
= {
5914 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5915 .rpc_argp
= session
,
5920 dprintk("--> nfs4_proc_destroy_session\n");
5922 /* session is still being setup */
5923 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5926 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5929 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5930 "Session has been destroyed regardless...\n", status
);
5932 dprintk("<-- nfs4_proc_destroy_session\n");
5937 * Renew the cl_session lease.
5939 struct nfs4_sequence_data
{
5940 struct nfs_client
*clp
;
5941 struct nfs4_sequence_args args
;
5942 struct nfs4_sequence_res res
;
5945 static void nfs41_sequence_release(void *data
)
5947 struct nfs4_sequence_data
*calldata
= data
;
5948 struct nfs_client
*clp
= calldata
->clp
;
5950 if (atomic_read(&clp
->cl_count
) > 1)
5951 nfs4_schedule_state_renewal(clp
);
5952 nfs_put_client(clp
);
5956 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5958 switch(task
->tk_status
) {
5959 case -NFS4ERR_DELAY
:
5960 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5963 nfs4_schedule_lease_recovery(clp
);
5968 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5970 struct nfs4_sequence_data
*calldata
= data
;
5971 struct nfs_client
*clp
= calldata
->clp
;
5973 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5976 if (task
->tk_status
< 0) {
5977 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5978 if (atomic_read(&clp
->cl_count
) == 1)
5981 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5982 rpc_restart_call_prepare(task
);
5986 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5988 dprintk("<-- %s\n", __func__
);
5991 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5993 struct nfs4_sequence_data
*calldata
= data
;
5994 struct nfs_client
*clp
= calldata
->clp
;
5995 struct nfs4_sequence_args
*args
;
5996 struct nfs4_sequence_res
*res
;
5998 args
= task
->tk_msg
.rpc_argp
;
5999 res
= task
->tk_msg
.rpc_resp
;
6001 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
6004 static const struct rpc_call_ops nfs41_sequence_ops
= {
6005 .rpc_call_done
= nfs41_sequence_call_done
,
6006 .rpc_call_prepare
= nfs41_sequence_prepare
,
6007 .rpc_release
= nfs41_sequence_release
,
6010 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
6011 struct rpc_cred
*cred
,
6014 struct nfs4_sequence_data
*calldata
;
6015 struct rpc_message msg
= {
6016 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6019 struct rpc_task_setup task_setup_data
= {
6020 .rpc_client
= clp
->cl_rpcclient
,
6021 .rpc_message
= &msg
,
6022 .callback_ops
= &nfs41_sequence_ops
,
6023 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
6026 if (!atomic_inc_not_zero(&clp
->cl_count
))
6027 return ERR_PTR(-EIO
);
6028 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6029 if (calldata
== NULL
) {
6030 nfs_put_client(clp
);
6031 return ERR_PTR(-ENOMEM
);
6033 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6035 nfs4_set_sequence_privileged(&calldata
->args
);
6036 msg
.rpc_argp
= &calldata
->args
;
6037 msg
.rpc_resp
= &calldata
->res
;
6038 calldata
->clp
= clp
;
6039 task_setup_data
.callback_data
= calldata
;
6041 return rpc_run_task(&task_setup_data
);
6044 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6046 struct rpc_task
*task
;
6049 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6051 task
= _nfs41_proc_sequence(clp
, cred
, false);
6053 ret
= PTR_ERR(task
);
6055 rpc_put_task_async(task
);
6056 dprintk("<-- %s status=%d\n", __func__
, ret
);
6060 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6062 struct rpc_task
*task
;
6065 task
= _nfs41_proc_sequence(clp
, cred
, true);
6067 ret
= PTR_ERR(task
);
6070 ret
= rpc_wait_for_completion_task(task
);
6072 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6074 if (task
->tk_status
== 0)
6075 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6076 ret
= task
->tk_status
;
6080 dprintk("<-- %s status=%d\n", __func__
, ret
);
6084 struct nfs4_reclaim_complete_data
{
6085 struct nfs_client
*clp
;
6086 struct nfs41_reclaim_complete_args arg
;
6087 struct nfs41_reclaim_complete_res res
;
6090 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6092 struct nfs4_reclaim_complete_data
*calldata
= data
;
6094 nfs41_setup_sequence(calldata
->clp
->cl_session
,
6095 &calldata
->arg
.seq_args
,
6096 &calldata
->res
.seq_res
,
6100 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6102 switch(task
->tk_status
) {
6104 case -NFS4ERR_COMPLETE_ALREADY
:
6105 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6107 case -NFS4ERR_DELAY
:
6108 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6110 case -NFS4ERR_RETRY_UNCACHED_REP
:
6113 nfs4_schedule_lease_recovery(clp
);
6118 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6120 struct nfs4_reclaim_complete_data
*calldata
= data
;
6121 struct nfs_client
*clp
= calldata
->clp
;
6122 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6124 dprintk("--> %s\n", __func__
);
6125 if (!nfs41_sequence_done(task
, res
))
6128 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6129 rpc_restart_call_prepare(task
);
6132 dprintk("<-- %s\n", __func__
);
6135 static void nfs4_free_reclaim_complete_data(void *data
)
6137 struct nfs4_reclaim_complete_data
*calldata
= data
;
6142 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6143 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6144 .rpc_call_done
= nfs4_reclaim_complete_done
,
6145 .rpc_release
= nfs4_free_reclaim_complete_data
,
6149 * Issue a global reclaim complete.
6151 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6153 struct nfs4_reclaim_complete_data
*calldata
;
6154 struct rpc_task
*task
;
6155 struct rpc_message msg
= {
6156 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6158 struct rpc_task_setup task_setup_data
= {
6159 .rpc_client
= clp
->cl_rpcclient
,
6160 .rpc_message
= &msg
,
6161 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6162 .flags
= RPC_TASK_ASYNC
,
6164 int status
= -ENOMEM
;
6166 dprintk("--> %s\n", __func__
);
6167 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6168 if (calldata
== NULL
)
6170 calldata
->clp
= clp
;
6171 calldata
->arg
.one_fs
= 0;
6173 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6174 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6175 msg
.rpc_argp
= &calldata
->arg
;
6176 msg
.rpc_resp
= &calldata
->res
;
6177 task_setup_data
.callback_data
= calldata
;
6178 task
= rpc_run_task(&task_setup_data
);
6180 status
= PTR_ERR(task
);
6183 status
= nfs4_wait_for_completion_rpc_task(task
);
6185 status
= task
->tk_status
;
6189 dprintk("<-- %s status=%d\n", __func__
, status
);
6194 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6196 struct nfs4_layoutget
*lgp
= calldata
;
6197 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6198 struct nfs4_session
*session
= nfs4_get_session(server
);
6200 dprintk("--> %s\n", __func__
);
6201 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6202 * right now covering the LAYOUTGET we are about to send.
6203 * However, that is not so catastrophic, and there seems
6204 * to be no way to prevent it completely.
6206 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6207 &lgp
->res
.seq_res
, task
))
6209 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6210 NFS_I(lgp
->args
.inode
)->layout
,
6211 lgp
->args
.ctx
->state
)) {
6212 rpc_exit(task
, NFS4_OK
);
6216 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6218 struct nfs4_layoutget
*lgp
= calldata
;
6219 struct inode
*inode
= lgp
->args
.inode
;
6220 struct nfs_server
*server
= NFS_SERVER(inode
);
6221 struct pnfs_layout_hdr
*lo
;
6222 struct nfs4_state
*state
= NULL
;
6223 unsigned long timeo
, giveup
;
6225 dprintk("--> %s\n", __func__
);
6227 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
6230 switch (task
->tk_status
) {
6233 case -NFS4ERR_LAYOUTTRYLATER
:
6234 case -NFS4ERR_RECALLCONFLICT
:
6235 timeo
= rpc_get_timeout(task
->tk_client
);
6236 giveup
= lgp
->args
.timestamp
+ timeo
;
6237 if (time_after(giveup
, jiffies
))
6238 task
->tk_status
= -NFS4ERR_DELAY
;
6240 case -NFS4ERR_EXPIRED
:
6241 case -NFS4ERR_BAD_STATEID
:
6242 spin_lock(&inode
->i_lock
);
6243 lo
= NFS_I(inode
)->layout
;
6244 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6245 spin_unlock(&inode
->i_lock
);
6246 /* If the open stateid was bad, then recover it. */
6247 state
= lgp
->args
.ctx
->state
;
6251 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6252 spin_unlock(&inode
->i_lock
);
6253 /* Mark the bad layout state as invalid, then
6254 * retry using the open stateid. */
6255 pnfs_free_lseg_list(&head
);
6258 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6259 rpc_restart_call_prepare(task
);
6261 dprintk("<-- %s\n", __func__
);
6264 static size_t max_response_pages(struct nfs_server
*server
)
6266 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6267 return nfs_page_array_len(0, max_resp_sz
);
6270 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6277 for (i
= 0; i
< size
; i
++) {
6280 __free_page(pages
[i
]);
6285 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6287 struct page
**pages
;
6290 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6292 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6296 for (i
= 0; i
< size
; i
++) {
6297 pages
[i
] = alloc_page(gfp_flags
);
6299 dprintk("%s: failed to allocate page\n", __func__
);
6300 nfs4_free_pages(pages
, size
);
6308 static void nfs4_layoutget_release(void *calldata
)
6310 struct nfs4_layoutget
*lgp
= calldata
;
6311 struct inode
*inode
= lgp
->args
.inode
;
6312 struct nfs_server
*server
= NFS_SERVER(inode
);
6313 size_t max_pages
= max_response_pages(server
);
6315 dprintk("--> %s\n", __func__
);
6316 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6317 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
6318 put_nfs_open_context(lgp
->args
.ctx
);
6320 dprintk("<-- %s\n", __func__
);
6323 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6324 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6325 .rpc_call_done
= nfs4_layoutget_done
,
6326 .rpc_release
= nfs4_layoutget_release
,
6329 struct pnfs_layout_segment
*
6330 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6332 struct inode
*inode
= lgp
->args
.inode
;
6333 struct nfs_server
*server
= NFS_SERVER(inode
);
6334 size_t max_pages
= max_response_pages(server
);
6335 struct rpc_task
*task
;
6336 struct rpc_message msg
= {
6337 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6338 .rpc_argp
= &lgp
->args
,
6339 .rpc_resp
= &lgp
->res
,
6341 struct rpc_task_setup task_setup_data
= {
6342 .rpc_client
= server
->client
,
6343 .rpc_message
= &msg
,
6344 .callback_ops
= &nfs4_layoutget_call_ops
,
6345 .callback_data
= lgp
,
6346 .flags
= RPC_TASK_ASYNC
,
6348 struct pnfs_layout_segment
*lseg
= NULL
;
6351 dprintk("--> %s\n", __func__
);
6353 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6354 if (!lgp
->args
.layout
.pages
) {
6355 nfs4_layoutget_release(lgp
);
6356 return ERR_PTR(-ENOMEM
);
6358 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6359 lgp
->args
.timestamp
= jiffies
;
6361 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6362 lgp
->res
.seq_res
.sr_slot
= NULL
;
6363 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6365 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6366 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
6368 task
= rpc_run_task(&task_setup_data
);
6370 return ERR_CAST(task
);
6371 status
= nfs4_wait_for_completion_rpc_task(task
);
6373 status
= task
->tk_status
;
6374 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6375 if (status
== 0 && lgp
->res
.layoutp
->len
)
6376 lseg
= pnfs_layout_process(lgp
);
6378 dprintk("<-- %s status=%d\n", __func__
, status
);
6380 return ERR_PTR(status
);
6385 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6387 struct nfs4_layoutreturn
*lrp
= calldata
;
6389 dprintk("--> %s\n", __func__
);
6390 nfs41_setup_sequence(lrp
->clp
->cl_session
,
6391 &lrp
->args
.seq_args
,
6396 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6398 struct nfs4_layoutreturn
*lrp
= calldata
;
6399 struct nfs_server
*server
;
6401 dprintk("--> %s\n", __func__
);
6403 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
6406 server
= NFS_SERVER(lrp
->args
.inode
);
6407 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6408 rpc_restart_call_prepare(task
);
6411 dprintk("<-- %s\n", __func__
);
6414 static void nfs4_layoutreturn_release(void *calldata
)
6416 struct nfs4_layoutreturn
*lrp
= calldata
;
6417 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6419 dprintk("--> %s\n", __func__
);
6420 spin_lock(&lo
->plh_inode
->i_lock
);
6421 if (lrp
->res
.lrs_present
)
6422 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6423 lo
->plh_block_lgets
--;
6424 spin_unlock(&lo
->plh_inode
->i_lock
);
6425 pnfs_put_layout_hdr(lrp
->args
.layout
);
6427 dprintk("<-- %s\n", __func__
);
6430 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6431 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6432 .rpc_call_done
= nfs4_layoutreturn_done
,
6433 .rpc_release
= nfs4_layoutreturn_release
,
6436 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6438 struct rpc_task
*task
;
6439 struct rpc_message msg
= {
6440 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6441 .rpc_argp
= &lrp
->args
,
6442 .rpc_resp
= &lrp
->res
,
6444 struct rpc_task_setup task_setup_data
= {
6445 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6446 .rpc_message
= &msg
,
6447 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6448 .callback_data
= lrp
,
6452 dprintk("--> %s\n", __func__
);
6453 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6454 task
= rpc_run_task(&task_setup_data
);
6456 return PTR_ERR(task
);
6457 status
= task
->tk_status
;
6458 dprintk("<-- %s status=%d\n", __func__
, status
);
6464 * Retrieve the list of Data Server devices from the MDS.
6466 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6467 const struct nfs_fh
*fh
,
6468 struct pnfs_devicelist
*devlist
)
6470 struct nfs4_getdevicelist_args args
= {
6472 .layoutclass
= server
->pnfs_curr_ld
->id
,
6474 struct nfs4_getdevicelist_res res
= {
6477 struct rpc_message msg
= {
6478 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6484 dprintk("--> %s\n", __func__
);
6485 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6487 dprintk("<-- %s status=%d\n", __func__
, status
);
6491 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6492 const struct nfs_fh
*fh
,
6493 struct pnfs_devicelist
*devlist
)
6495 struct nfs4_exception exception
= { };
6499 err
= nfs4_handle_exception(server
,
6500 _nfs4_getdevicelist(server
, fh
, devlist
),
6502 } while (exception
.retry
);
6504 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6505 err
, devlist
->num_devs
);
6509 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6512 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6514 struct nfs4_getdeviceinfo_args args
= {
6517 struct nfs4_getdeviceinfo_res res
= {
6520 struct rpc_message msg
= {
6521 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6527 dprintk("--> %s\n", __func__
);
6528 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6529 dprintk("<-- %s status=%d\n", __func__
, status
);
6534 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6536 struct nfs4_exception exception
= { };
6540 err
= nfs4_handle_exception(server
,
6541 _nfs4_proc_getdeviceinfo(server
, pdev
),
6543 } while (exception
.retry
);
6546 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6548 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6550 struct nfs4_layoutcommit_data
*data
= calldata
;
6551 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6552 struct nfs4_session
*session
= nfs4_get_session(server
);
6554 nfs41_setup_sequence(session
,
6555 &data
->args
.seq_args
,
6561 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6563 struct nfs4_layoutcommit_data
*data
= calldata
;
6564 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6566 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
6569 switch (task
->tk_status
) { /* Just ignore these failures */
6570 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6571 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6572 case -NFS4ERR_BADLAYOUT
: /* no layout */
6573 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6574 task
->tk_status
= 0;
6577 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6581 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6582 rpc_restart_call_prepare(task
);
6588 static void nfs4_layoutcommit_release(void *calldata
)
6590 struct nfs4_layoutcommit_data
*data
= calldata
;
6592 pnfs_cleanup_layoutcommit(data
);
6593 put_rpccred(data
->cred
);
6597 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6598 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6599 .rpc_call_done
= nfs4_layoutcommit_done
,
6600 .rpc_release
= nfs4_layoutcommit_release
,
6604 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6606 struct rpc_message msg
= {
6607 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6608 .rpc_argp
= &data
->args
,
6609 .rpc_resp
= &data
->res
,
6610 .rpc_cred
= data
->cred
,
6612 struct rpc_task_setup task_setup_data
= {
6613 .task
= &data
->task
,
6614 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6615 .rpc_message
= &msg
,
6616 .callback_ops
= &nfs4_layoutcommit_ops
,
6617 .callback_data
= data
,
6618 .flags
= RPC_TASK_ASYNC
,
6620 struct rpc_task
*task
;
6623 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6624 "lbw: %llu inode %lu\n",
6625 data
->task
.tk_pid
, sync
,
6626 data
->args
.lastbytewritten
,
6627 data
->args
.inode
->i_ino
);
6629 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6630 task
= rpc_run_task(&task_setup_data
);
6632 return PTR_ERR(task
);
6635 status
= nfs4_wait_for_completion_rpc_task(task
);
6638 status
= task
->tk_status
;
6640 dprintk("%s: status %d\n", __func__
, status
);
6646 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6647 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6649 struct nfs41_secinfo_no_name_args args
= {
6650 .style
= SECINFO_STYLE_CURRENT_FH
,
6652 struct nfs4_secinfo_res res
= {
6655 struct rpc_message msg
= {
6656 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6660 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6664 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6665 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6667 struct nfs4_exception exception
= { };
6670 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6673 case -NFS4ERR_WRONGSEC
:
6674 case -NFS4ERR_NOTSUPP
:
6677 err
= nfs4_handle_exception(server
, err
, &exception
);
6679 } while (exception
.retry
);
6685 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6686 struct nfs_fsinfo
*info
)
6690 rpc_authflavor_t flavor
;
6691 struct nfs4_secinfo_flavors
*flavors
;
6693 page
= alloc_page(GFP_KERNEL
);
6699 flavors
= page_address(page
);
6700 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6703 * Fall back on "guess and check" method if
6704 * the server doesn't support SECINFO_NO_NAME
6706 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6707 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6713 flavor
= nfs_find_best_sec(flavors
);
6715 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6725 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6728 struct nfs41_test_stateid_args args
= {
6731 struct nfs41_test_stateid_res res
;
6732 struct rpc_message msg
= {
6733 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6738 dprintk("NFS call test_stateid %p\n", stateid
);
6739 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6740 nfs4_set_sequence_privileged(&args
.seq_args
);
6741 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6742 &args
.seq_args
, &res
.seq_res
);
6743 if (status
!= NFS_OK
) {
6744 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6747 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6752 * nfs41_test_stateid - perform a TEST_STATEID operation
6754 * @server: server / transport on which to perform the operation
6755 * @stateid: state ID to test
6757 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6758 * Otherwise a negative NFS4ERR value is returned if the operation
6759 * failed or the state ID is not currently valid.
6761 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6763 struct nfs4_exception exception
= { };
6766 err
= _nfs41_test_stateid(server
, stateid
);
6767 if (err
!= -NFS4ERR_DELAY
)
6769 nfs4_handle_exception(server
, err
, &exception
);
6770 } while (exception
.retry
);
6774 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6776 struct nfs41_free_stateid_args args
= {
6779 struct nfs41_free_stateid_res res
;
6780 struct rpc_message msg
= {
6781 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6787 dprintk("NFS call free_stateid %p\n", stateid
);
6788 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6789 nfs4_set_sequence_privileged(&args
.seq_args
);
6790 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6791 &args
.seq_args
, &res
.seq_res
);
6792 dprintk("NFS reply free_stateid: %d\n", status
);
6797 * nfs41_free_stateid - perform a FREE_STATEID operation
6799 * @server: server / transport on which to perform the operation
6800 * @stateid: state ID to release
6802 * Returns NFS_OK if the server freed "stateid". Otherwise a
6803 * negative NFS4ERR value is returned.
6805 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6807 struct nfs4_exception exception
= { };
6810 err
= _nfs4_free_stateid(server
, stateid
);
6811 if (err
!= -NFS4ERR_DELAY
)
6813 nfs4_handle_exception(server
, err
, &exception
);
6814 } while (exception
.retry
);
6818 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6819 const nfs4_stateid
*s2
)
6821 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6824 if (s1
->seqid
== s2
->seqid
)
6826 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6832 #endif /* CONFIG_NFS_V4_1 */
6834 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6835 const nfs4_stateid
*s2
)
6837 return nfs4_stateid_match(s1
, s2
);
6841 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6842 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6843 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6844 .recover_open
= nfs4_open_reclaim
,
6845 .recover_lock
= nfs4_lock_reclaim
,
6846 .establish_clid
= nfs4_init_clientid
,
6847 .get_clid_cred
= nfs4_get_setclientid_cred
,
6848 .detect_trunking
= nfs40_discover_server_trunking
,
6851 #if defined(CONFIG_NFS_V4_1)
6852 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6853 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6854 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6855 .recover_open
= nfs4_open_reclaim
,
6856 .recover_lock
= nfs4_lock_reclaim
,
6857 .establish_clid
= nfs41_init_clientid
,
6858 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6859 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6860 .detect_trunking
= nfs41_discover_server_trunking
,
6862 #endif /* CONFIG_NFS_V4_1 */
6864 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6865 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6866 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6867 .recover_open
= nfs4_open_expired
,
6868 .recover_lock
= nfs4_lock_expired
,
6869 .establish_clid
= nfs4_init_clientid
,
6870 .get_clid_cred
= nfs4_get_setclientid_cred
,
6873 #if defined(CONFIG_NFS_V4_1)
6874 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6875 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6876 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6877 .recover_open
= nfs41_open_expired
,
6878 .recover_lock
= nfs41_lock_expired
,
6879 .establish_clid
= nfs41_init_clientid
,
6880 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6882 #endif /* CONFIG_NFS_V4_1 */
6884 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6885 .sched_state_renewal
= nfs4_proc_async_renew
,
6886 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6887 .renew_lease
= nfs4_proc_renew
,
6890 #if defined(CONFIG_NFS_V4_1)
6891 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6892 .sched_state_renewal
= nfs41_proc_async_sequence
,
6893 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6894 .renew_lease
= nfs4_proc_sequence
,
6898 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6900 .init_caps
= NFS_CAP_READDIRPLUS
6901 | NFS_CAP_ATOMIC_OPEN
6902 | NFS_CAP_CHANGE_ATTR
6903 | NFS_CAP_POSIX_LOCK
,
6904 .call_sync
= _nfs4_call_sync
,
6905 .match_stateid
= nfs4_match_stateid
,
6906 .find_root_sec
= nfs4_find_root_sec
,
6907 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6908 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6909 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6912 #if defined(CONFIG_NFS_V4_1)
6913 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6915 .init_caps
= NFS_CAP_READDIRPLUS
6916 | NFS_CAP_ATOMIC_OPEN
6917 | NFS_CAP_CHANGE_ATTR
6918 | NFS_CAP_POSIX_LOCK
6919 | NFS_CAP_STATEID_NFSV41
6920 | NFS_CAP_ATOMIC_OPEN_V1
,
6921 .call_sync
= nfs4_call_sync_sequence
,
6922 .match_stateid
= nfs41_match_stateid
,
6923 .find_root_sec
= nfs41_find_root_sec
,
6924 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6925 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6926 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6930 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6931 [0] = &nfs_v4_0_minor_ops
,
6932 #if defined(CONFIG_NFS_V4_1)
6933 [1] = &nfs_v4_1_minor_ops
,
6937 const struct inode_operations nfs4_dir_inode_operations
= {
6938 .create
= nfs_create
,
6939 .lookup
= nfs_lookup
,
6940 .atomic_open
= nfs_atomic_open
,
6942 .unlink
= nfs_unlink
,
6943 .symlink
= nfs_symlink
,
6947 .rename
= nfs_rename
,
6948 .permission
= nfs_permission
,
6949 .getattr
= nfs_getattr
,
6950 .setattr
= nfs_setattr
,
6951 .getxattr
= generic_getxattr
,
6952 .setxattr
= generic_setxattr
,
6953 .listxattr
= generic_listxattr
,
6954 .removexattr
= generic_removexattr
,
6957 static const struct inode_operations nfs4_file_inode_operations
= {
6958 .permission
= nfs_permission
,
6959 .getattr
= nfs_getattr
,
6960 .setattr
= nfs_setattr
,
6961 .getxattr
= generic_getxattr
,
6962 .setxattr
= generic_setxattr
,
6963 .listxattr
= generic_listxattr
,
6964 .removexattr
= generic_removexattr
,
6967 const struct nfs_rpc_ops nfs_v4_clientops
= {
6968 .version
= 4, /* protocol version */
6969 .dentry_ops
= &nfs4_dentry_operations
,
6970 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6971 .file_inode_ops
= &nfs4_file_inode_operations
,
6972 .file_ops
= &nfs4_file_operations
,
6973 .getroot
= nfs4_proc_get_root
,
6974 .submount
= nfs4_submount
,
6975 .try_mount
= nfs4_try_mount
,
6976 .getattr
= nfs4_proc_getattr
,
6977 .setattr
= nfs4_proc_setattr
,
6978 .lookup
= nfs4_proc_lookup
,
6979 .access
= nfs4_proc_access
,
6980 .readlink
= nfs4_proc_readlink
,
6981 .create
= nfs4_proc_create
,
6982 .remove
= nfs4_proc_remove
,
6983 .unlink_setup
= nfs4_proc_unlink_setup
,
6984 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
6985 .unlink_done
= nfs4_proc_unlink_done
,
6986 .rename
= nfs4_proc_rename
,
6987 .rename_setup
= nfs4_proc_rename_setup
,
6988 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
6989 .rename_done
= nfs4_proc_rename_done
,
6990 .link
= nfs4_proc_link
,
6991 .symlink
= nfs4_proc_symlink
,
6992 .mkdir
= nfs4_proc_mkdir
,
6993 .rmdir
= nfs4_proc_remove
,
6994 .readdir
= nfs4_proc_readdir
,
6995 .mknod
= nfs4_proc_mknod
,
6996 .statfs
= nfs4_proc_statfs
,
6997 .fsinfo
= nfs4_proc_fsinfo
,
6998 .pathconf
= nfs4_proc_pathconf
,
6999 .set_capabilities
= nfs4_server_capabilities
,
7000 .decode_dirent
= nfs4_decode_dirent
,
7001 .read_setup
= nfs4_proc_read_setup
,
7002 .read_pageio_init
= pnfs_pageio_init_read
,
7003 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
7004 .read_done
= nfs4_read_done
,
7005 .write_setup
= nfs4_proc_write_setup
,
7006 .write_pageio_init
= pnfs_pageio_init_write
,
7007 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
7008 .write_done
= nfs4_write_done
,
7009 .commit_setup
= nfs4_proc_commit_setup
,
7010 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
7011 .commit_done
= nfs4_commit_done
,
7012 .lock
= nfs4_proc_lock
,
7013 .clear_acl_cache
= nfs4_zap_acl_attr
,
7014 .close_context
= nfs4_close_context
,
7015 .open_context
= nfs4_atomic_open
,
7016 .have_delegation
= nfs4_have_delegation
,
7017 .return_delegation
= nfs4_inode_return_delegation
,
7018 .alloc_client
= nfs4_alloc_client
,
7019 .init_client
= nfs4_init_client
,
7020 .free_client
= nfs4_free_client
,
7021 .create_server
= nfs4_create_server
,
7022 .clone_server
= nfs_clone_server
,
7025 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7026 .prefix
= XATTR_NAME_NFSV4_ACL
,
7027 .list
= nfs4_xattr_list_nfs4_acl
,
7028 .get
= nfs4_xattr_get_nfs4_acl
,
7029 .set
= nfs4_xattr_set_nfs4_acl
,
7032 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7033 &nfs4_xattr_nfs4_acl_handler
,