4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/nfs_idmap.h>
55 #include <linux/sunrpc/bc_xprt.h>
56 #include <linux/xattr.h>
57 #include <linux/utsname.h>
58 #include <linux/freezer.h>
61 #include "delegation.h"
68 #define NFSDBG_FACILITY NFSDBG_PROC
70 #define NFS4_POLL_RETRY_MIN (HZ/10)
71 #define NFS4_POLL_RETRY_MAX (15*HZ)
73 #define NFS4_MAX_LOOP_ON_RECOVER (10)
76 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
77 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
78 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
79 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
80 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
81 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*);
82 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
83 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
84 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
85 struct nfs4_state
*state
);
86 #ifdef CONFIG_NFS_V4_1
87 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*);
88 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*);
90 /* Prevent leaks of NFSv4 errors into userland */
91 static int nfs4_map_errors(int err
)
96 case -NFS4ERR_RESOURCE
:
98 case -NFS4ERR_WRONGSEC
:
100 case -NFS4ERR_BADOWNER
:
101 case -NFS4ERR_BADNAME
:
103 case -NFS4ERR_SHARE_DENIED
:
105 case -NFS4ERR_MINOR_VERS_MISMATCH
:
106 return -EPROTONOSUPPORT
;
107 case -NFS4ERR_ACCESS
:
110 dprintk("%s could not handle NFSv4 error %d\n",
118 * This is our standard bitmap for GETATTR requests.
120 const u32 nfs4_fattr_bitmap
[3] = {
122 | FATTR4_WORD0_CHANGE
125 | FATTR4_WORD0_FILEID
,
127 | FATTR4_WORD1_NUMLINKS
129 | FATTR4_WORD1_OWNER_GROUP
130 | FATTR4_WORD1_RAWDEV
131 | FATTR4_WORD1_SPACE_USED
132 | FATTR4_WORD1_TIME_ACCESS
133 | FATTR4_WORD1_TIME_METADATA
134 | FATTR4_WORD1_TIME_MODIFY
137 static const u32 nfs4_pnfs_open_bitmap
[3] = {
139 | FATTR4_WORD0_CHANGE
142 | FATTR4_WORD0_FILEID
,
144 | FATTR4_WORD1_NUMLINKS
146 | FATTR4_WORD1_OWNER_GROUP
147 | FATTR4_WORD1_RAWDEV
148 | FATTR4_WORD1_SPACE_USED
149 | FATTR4_WORD1_TIME_ACCESS
150 | FATTR4_WORD1_TIME_METADATA
151 | FATTR4_WORD1_TIME_MODIFY
,
152 FATTR4_WORD2_MDSTHRESHOLD
155 static const u32 nfs4_open_noattr_bitmap
[3] = {
157 | FATTR4_WORD0_CHANGE
158 | FATTR4_WORD0_FILEID
,
161 const u32 nfs4_statfs_bitmap
[2] = {
162 FATTR4_WORD0_FILES_AVAIL
163 | FATTR4_WORD0_FILES_FREE
164 | FATTR4_WORD0_FILES_TOTAL
,
165 FATTR4_WORD1_SPACE_AVAIL
166 | FATTR4_WORD1_SPACE_FREE
167 | FATTR4_WORD1_SPACE_TOTAL
170 const u32 nfs4_pathconf_bitmap
[2] = {
172 | FATTR4_WORD0_MAXNAME
,
176 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
177 | FATTR4_WORD0_MAXREAD
178 | FATTR4_WORD0_MAXWRITE
179 | FATTR4_WORD0_LEASE_TIME
,
180 FATTR4_WORD1_TIME_DELTA
181 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
182 FATTR4_WORD2_LAYOUT_BLKSIZE
185 const u32 nfs4_fs_locations_bitmap
[2] = {
187 | FATTR4_WORD0_CHANGE
190 | FATTR4_WORD0_FILEID
191 | FATTR4_WORD0_FS_LOCATIONS
,
193 | FATTR4_WORD1_NUMLINKS
195 | FATTR4_WORD1_OWNER_GROUP
196 | FATTR4_WORD1_RAWDEV
197 | FATTR4_WORD1_SPACE_USED
198 | FATTR4_WORD1_TIME_ACCESS
199 | FATTR4_WORD1_TIME_METADATA
200 | FATTR4_WORD1_TIME_MODIFY
201 | FATTR4_WORD1_MOUNTED_ON_FILEID
204 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
205 struct nfs4_readdir_arg
*readdir
)
210 readdir
->cookie
= cookie
;
211 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
216 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
221 * NFSv4 servers do not return entries for '.' and '..'
222 * Therefore, we fake these entries here. We let '.'
223 * have cookie 0 and '..' have cookie 1. Note that
224 * when talking to the server, we always send cookie 0
227 start
= p
= kmap_atomic(*readdir
->pages
);
230 *p
++ = xdr_one
; /* next */
231 *p
++ = xdr_zero
; /* cookie, first word */
232 *p
++ = xdr_one
; /* cookie, second word */
233 *p
++ = xdr_one
; /* entry len */
234 memcpy(p
, ".\0\0\0", 4); /* entry */
236 *p
++ = xdr_one
; /* bitmap length */
237 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
238 *p
++ = htonl(8); /* attribute buffer length */
239 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
242 *p
++ = xdr_one
; /* next */
243 *p
++ = xdr_zero
; /* cookie, first word */
244 *p
++ = xdr_two
; /* cookie, second word */
245 *p
++ = xdr_two
; /* entry len */
246 memcpy(p
, "..\0\0", 4); /* entry */
248 *p
++ = xdr_one
; /* bitmap length */
249 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
250 *p
++ = htonl(8); /* attribute buffer length */
251 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
253 readdir
->pgbase
= (char *)p
- (char *)start
;
254 readdir
->count
-= readdir
->pgbase
;
255 kunmap_atomic(start
);
258 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
264 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
265 nfs_wait_bit_killable
, TASK_KILLABLE
);
269 if (clp
->cl_cons_state
< 0)
270 return clp
->cl_cons_state
;
274 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
281 *timeout
= NFS4_POLL_RETRY_MIN
;
282 if (*timeout
> NFS4_POLL_RETRY_MAX
)
283 *timeout
= NFS4_POLL_RETRY_MAX
;
284 freezable_schedule_timeout_killable(*timeout
);
285 if (fatal_signal_pending(current
))
291 /* This is the error handling routine for processes that are allowed
294 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
296 struct nfs_client
*clp
= server
->nfs_client
;
297 struct nfs4_state
*state
= exception
->state
;
298 struct inode
*inode
= exception
->inode
;
301 exception
->retry
= 0;
305 case -NFS4ERR_OPENMODE
:
306 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
307 nfs4_inode_return_delegation(inode
);
308 exception
->retry
= 1;
313 nfs4_schedule_stateid_recovery(server
, state
);
314 goto wait_on_recovery
;
315 case -NFS4ERR_DELEG_REVOKED
:
316 case -NFS4ERR_ADMIN_REVOKED
:
317 case -NFS4ERR_BAD_STATEID
:
320 nfs_remove_bad_delegation(state
->inode
);
321 nfs4_schedule_stateid_recovery(server
, state
);
322 goto wait_on_recovery
;
323 case -NFS4ERR_EXPIRED
:
325 nfs4_schedule_stateid_recovery(server
, state
);
326 case -NFS4ERR_STALE_STATEID
:
327 case -NFS4ERR_STALE_CLIENTID
:
328 nfs4_schedule_lease_recovery(clp
);
329 goto wait_on_recovery
;
330 #if defined(CONFIG_NFS_V4_1)
331 case -NFS4ERR_BADSESSION
:
332 case -NFS4ERR_BADSLOT
:
333 case -NFS4ERR_BAD_HIGH_SLOT
:
334 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
335 case -NFS4ERR_DEADSESSION
:
336 case -NFS4ERR_SEQ_FALSE_RETRY
:
337 case -NFS4ERR_SEQ_MISORDERED
:
338 dprintk("%s ERROR: %d Reset session\n", __func__
,
340 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
341 goto wait_on_recovery
;
342 #endif /* defined(CONFIG_NFS_V4_1) */
343 case -NFS4ERR_FILE_OPEN
:
344 if (exception
->timeout
> HZ
) {
345 /* We have retried a decent amount, time to
354 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
357 case -NFS4ERR_RETRY_UNCACHED_REP
:
358 case -NFS4ERR_OLD_STATEID
:
359 exception
->retry
= 1;
361 case -NFS4ERR_BADOWNER
:
362 /* The following works around a Linux server bug! */
363 case -NFS4ERR_BADNAME
:
364 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
365 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
366 exception
->retry
= 1;
367 printk(KERN_WARNING
"NFS: v4 server %s "
368 "does not accept raw "
370 "Reenabling the idmapper.\n",
371 server
->nfs_client
->cl_hostname
);
374 /* We failed to handle the error */
375 return nfs4_map_errors(ret
);
377 ret
= nfs4_wait_clnt_recover(clp
);
379 exception
->retry
= 1;
384 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
386 spin_lock(&clp
->cl_lock
);
387 if (time_before(clp
->cl_last_renewal
,timestamp
))
388 clp
->cl_last_renewal
= timestamp
;
389 spin_unlock(&clp
->cl_lock
);
392 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
394 do_renew_lease(server
->nfs_client
, timestamp
);
397 #if defined(CONFIG_NFS_V4_1)
400 * nfs4_free_slot - free a slot and efficiently update slot table.
402 * freeing a slot is trivially done by clearing its respective bit
404 * If the freed slotid equals highest_used_slotid we want to update it
405 * so that the server would be able to size down the slot table if needed,
406 * otherwise we know that the highest_used_slotid is still in use.
407 * When updating highest_used_slotid there may be "holes" in the bitmap
408 * so we need to scan down from highest_used_slotid to 0 looking for the now
409 * highest slotid in use.
410 * If none found, highest_used_slotid is set to NFS4_NO_SLOT.
412 * Must be called while holding tbl->slot_tbl_lock
415 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u32 slotid
)
417 /* clear used bit in bitmap */
418 __clear_bit(slotid
, tbl
->used_slots
);
420 /* update highest_used_slotid when it is freed */
421 if (slotid
== tbl
->highest_used_slotid
) {
422 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
423 if (slotid
< tbl
->max_slots
)
424 tbl
->highest_used_slotid
= slotid
;
426 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
428 dprintk("%s: slotid %u highest_used_slotid %d\n", __func__
,
429 slotid
, tbl
->highest_used_slotid
);
432 bool nfs4_set_task_privileged(struct rpc_task
*task
, void *dummy
)
434 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
439 * Signal state manager thread if session fore channel is drained
441 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
443 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
444 rpc_wake_up_first(&ses
->fc_slot_table
.slot_tbl_waitq
,
445 nfs4_set_task_privileged
, NULL
);
449 if (ses
->fc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
452 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
453 complete(&ses
->fc_slot_table
.complete
);
457 * Signal state manager thread if session back channel is drained
459 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
461 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
462 ses
->bc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
464 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
465 complete(&ses
->bc_slot_table
.complete
);
468 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
470 struct nfs4_slot_table
*tbl
;
472 tbl
= &res
->sr_session
->fc_slot_table
;
474 /* just wake up the next guy waiting since
475 * we may have not consumed a slot after all */
476 dprintk("%s: No slot\n", __func__
);
480 spin_lock(&tbl
->slot_tbl_lock
);
481 nfs4_free_slot(tbl
, res
->sr_slot
- tbl
->slots
);
482 nfs4_check_drain_fc_complete(res
->sr_session
);
483 spin_unlock(&tbl
->slot_tbl_lock
);
487 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
489 unsigned long timestamp
;
490 struct nfs_client
*clp
;
493 * sr_status remains 1 if an RPC level error occurred. The server
494 * may or may not have processed the sequence operation..
495 * Proceed as if the server received and processed the sequence
498 if (res
->sr_status
== 1)
499 res
->sr_status
= NFS_OK
;
501 /* don't increment the sequence number if the task wasn't sent */
502 if (!RPC_WAS_SENT(task
))
505 /* Check the SEQUENCE operation status */
506 switch (res
->sr_status
) {
508 /* Update the slot's sequence and clientid lease timer */
509 ++res
->sr_slot
->seq_nr
;
510 timestamp
= res
->sr_renewal_time
;
511 clp
= res
->sr_session
->clp
;
512 do_renew_lease(clp
, timestamp
);
513 /* Check sequence flags */
514 if (res
->sr_status_flags
!= 0)
515 nfs4_schedule_lease_recovery(clp
);
518 /* The server detected a resend of the RPC call and
519 * returned NFS4ERR_DELAY as per Section 2.10.6.2
522 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
524 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
525 res
->sr_slot
->seq_nr
);
528 /* Just update the slot sequence no. */
529 ++res
->sr_slot
->seq_nr
;
532 /* The session may be reset by one of the error handlers. */
533 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
534 nfs41_sequence_free_slot(res
);
537 if (!rpc_restart_call(task
))
539 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
543 static int nfs4_sequence_done(struct rpc_task
*task
,
544 struct nfs4_sequence_res
*res
)
546 if (res
->sr_session
== NULL
)
548 return nfs41_sequence_done(task
, res
);
552 * nfs4_find_slot - efficiently look for a free slot
554 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
555 * If found, we mark the slot as used, update the highest_used_slotid,
556 * and respectively set up the sequence operation args.
557 * The slot number is returned if found, or NFS4_NO_SLOT otherwise.
559 * Note: must be called with under the slot_tbl_lock.
562 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
565 u32 ret_id
= NFS4_NO_SLOT
;
567 dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n",
568 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
570 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
571 if (slotid
>= tbl
->max_slots
)
573 __set_bit(slotid
, tbl
->used_slots
);
574 if (slotid
> tbl
->highest_used_slotid
||
575 tbl
->highest_used_slotid
== NFS4_NO_SLOT
)
576 tbl
->highest_used_slotid
= slotid
;
579 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
580 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
584 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
585 struct nfs4_sequence_res
*res
, int cache_reply
)
587 args
->sa_session
= NULL
;
588 args
->sa_cache_this
= 0;
590 args
->sa_cache_this
= 1;
591 res
->sr_session
= NULL
;
595 int nfs41_setup_sequence(struct nfs4_session
*session
,
596 struct nfs4_sequence_args
*args
,
597 struct nfs4_sequence_res
*res
,
598 struct rpc_task
*task
)
600 struct nfs4_slot
*slot
;
601 struct nfs4_slot_table
*tbl
;
604 dprintk("--> %s\n", __func__
);
605 /* slot already allocated? */
606 if (res
->sr_slot
!= NULL
)
609 tbl
= &session
->fc_slot_table
;
611 spin_lock(&tbl
->slot_tbl_lock
);
612 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
613 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
614 /* The state manager will wait until the slot table is empty */
615 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
616 spin_unlock(&tbl
->slot_tbl_lock
);
617 dprintk("%s session is draining\n", __func__
);
621 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
622 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
623 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
624 spin_unlock(&tbl
->slot_tbl_lock
);
625 dprintk("%s enforce FIFO order\n", __func__
);
629 slotid
= nfs4_find_slot(tbl
);
630 if (slotid
== NFS4_NO_SLOT
) {
631 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
632 spin_unlock(&tbl
->slot_tbl_lock
);
633 dprintk("<-- %s: no free slots\n", __func__
);
636 spin_unlock(&tbl
->slot_tbl_lock
);
638 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
639 slot
= tbl
->slots
+ slotid
;
640 args
->sa_session
= session
;
641 args
->sa_slotid
= slotid
;
643 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
645 res
->sr_session
= session
;
647 res
->sr_renewal_time
= jiffies
;
648 res
->sr_status_flags
= 0;
650 * sr_status is only set in decode_sequence, and so will remain
651 * set to 1 if an rpc level failure occurs.
656 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
658 int nfs4_setup_sequence(const struct nfs_server
*server
,
659 struct nfs4_sequence_args
*args
,
660 struct nfs4_sequence_res
*res
,
661 struct rpc_task
*task
)
663 struct nfs4_session
*session
= nfs4_get_session(server
);
669 dprintk("--> %s clp %p session %p sr_slot %td\n",
670 __func__
, session
->clp
, session
, res
->sr_slot
?
671 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
673 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
675 dprintk("<-- %s status=%d\n", __func__
, ret
);
679 struct nfs41_call_sync_data
{
680 const struct nfs_server
*seq_server
;
681 struct nfs4_sequence_args
*seq_args
;
682 struct nfs4_sequence_res
*seq_res
;
685 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
687 struct nfs41_call_sync_data
*data
= calldata
;
689 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
691 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
692 data
->seq_res
, task
))
694 rpc_call_start(task
);
697 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
699 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
700 nfs41_call_sync_prepare(task
, calldata
);
703 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
705 struct nfs41_call_sync_data
*data
= calldata
;
707 nfs41_sequence_done(task
, data
->seq_res
);
710 static const struct rpc_call_ops nfs41_call_sync_ops
= {
711 .rpc_call_prepare
= nfs41_call_sync_prepare
,
712 .rpc_call_done
= nfs41_call_sync_done
,
715 static const struct rpc_call_ops nfs41_call_priv_sync_ops
= {
716 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
717 .rpc_call_done
= nfs41_call_sync_done
,
720 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
721 struct nfs_server
*server
,
722 struct rpc_message
*msg
,
723 struct nfs4_sequence_args
*args
,
724 struct nfs4_sequence_res
*res
,
728 struct rpc_task
*task
;
729 struct nfs41_call_sync_data data
= {
730 .seq_server
= server
,
734 struct rpc_task_setup task_setup
= {
737 .callback_ops
= &nfs41_call_sync_ops
,
738 .callback_data
= &data
742 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
743 task
= rpc_run_task(&task_setup
);
747 ret
= task
->tk_status
;
753 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
754 struct nfs_server
*server
,
755 struct rpc_message
*msg
,
756 struct nfs4_sequence_args
*args
,
757 struct nfs4_sequence_res
*res
,
760 nfs41_init_sequence(args
, res
, cache_reply
);
761 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, 0);
766 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
767 struct nfs4_sequence_res
*res
, int cache_reply
)
771 static int nfs4_sequence_done(struct rpc_task
*task
,
772 struct nfs4_sequence_res
*res
)
776 #endif /* CONFIG_NFS_V4_1 */
778 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
779 struct nfs_server
*server
,
780 struct rpc_message
*msg
,
781 struct nfs4_sequence_args
*args
,
782 struct nfs4_sequence_res
*res
,
785 nfs41_init_sequence(args
, res
, cache_reply
);
786 return rpc_call_sync(clnt
, msg
, 0);
790 int nfs4_call_sync(struct rpc_clnt
*clnt
,
791 struct nfs_server
*server
,
792 struct rpc_message
*msg
,
793 struct nfs4_sequence_args
*args
,
794 struct nfs4_sequence_res
*res
,
797 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
798 args
, res
, cache_reply
);
801 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
803 struct nfs_inode
*nfsi
= NFS_I(dir
);
805 spin_lock(&dir
->i_lock
);
806 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
807 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
808 nfs_force_lookup_revalidate(dir
);
809 dir
->i_version
= cinfo
->after
;
810 spin_unlock(&dir
->i_lock
);
813 struct nfs4_opendata
{
815 struct nfs_openargs o_arg
;
816 struct nfs_openres o_res
;
817 struct nfs_open_confirmargs c_arg
;
818 struct nfs_open_confirmres c_res
;
819 struct nfs4_string owner_name
;
820 struct nfs4_string group_name
;
821 struct nfs_fattr f_attr
;
823 struct dentry
*dentry
;
824 struct nfs4_state_owner
*owner
;
825 struct nfs4_state
*state
;
827 unsigned long timestamp
;
828 unsigned int rpc_done
: 1;
834 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
836 p
->o_res
.f_attr
= &p
->f_attr
;
837 p
->o_res
.seqid
= p
->o_arg
.seqid
;
838 p
->c_res
.seqid
= p
->c_arg
.seqid
;
839 p
->o_res
.server
= p
->o_arg
.server
;
840 p
->o_res
.access_request
= p
->o_arg
.access
;
841 nfs_fattr_init(&p
->f_attr
);
842 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
845 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
846 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
847 const struct iattr
*attrs
,
850 struct dentry
*parent
= dget_parent(dentry
);
851 struct inode
*dir
= parent
->d_inode
;
852 struct nfs_server
*server
= NFS_SERVER(dir
);
853 struct nfs4_opendata
*p
;
855 p
= kzalloc(sizeof(*p
), gfp_mask
);
858 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
859 if (p
->o_arg
.seqid
== NULL
)
861 nfs_sb_active(dentry
->d_sb
);
862 p
->dentry
= dget(dentry
);
865 atomic_inc(&sp
->so_count
);
866 p
->o_arg
.fh
= NFS_FH(dir
);
867 p
->o_arg
.open_flags
= flags
;
868 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
869 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
870 * will return permission denied for all bits until close */
871 if (!(flags
& O_EXCL
)) {
872 /* ask server to check for all possible rights as results
874 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
875 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
877 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
878 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
879 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
880 p
->o_arg
.name
= &dentry
->d_name
;
881 p
->o_arg
.server
= server
;
882 p
->o_arg
.bitmask
= server
->attr_bitmask
;
883 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
884 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
885 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
888 p
->o_arg
.u
.attrs
= &p
->attrs
;
889 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
892 verf
[1] = current
->pid
;
893 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
894 sizeof(p
->o_arg
.u
.verifier
.data
));
896 p
->c_arg
.fh
= &p
->o_res
.fh
;
897 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
898 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
899 nfs4_init_opendata_res(p
);
909 static void nfs4_opendata_free(struct kref
*kref
)
911 struct nfs4_opendata
*p
= container_of(kref
,
912 struct nfs4_opendata
, kref
);
913 struct super_block
*sb
= p
->dentry
->d_sb
;
915 nfs_free_seqid(p
->o_arg
.seqid
);
916 if (p
->state
!= NULL
)
917 nfs4_put_open_state(p
->state
);
918 nfs4_put_state_owner(p
->owner
);
922 nfs_fattr_free_names(&p
->f_attr
);
926 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
929 kref_put(&p
->kref
, nfs4_opendata_free
);
932 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
936 ret
= rpc_wait_for_completion_task(task
);
940 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
944 if (open_mode
& (O_EXCL
|O_TRUNC
))
946 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
948 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
949 && state
->n_rdonly
!= 0;
952 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
953 && state
->n_wronly
!= 0;
955 case FMODE_READ
|FMODE_WRITE
:
956 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
957 && state
->n_rdwr
!= 0;
963 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
965 if (delegation
== NULL
)
967 if ((delegation
->type
& fmode
) != fmode
)
969 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
971 nfs_mark_delegation_referenced(delegation
);
975 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
984 case FMODE_READ
|FMODE_WRITE
:
987 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
990 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
992 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
993 nfs4_stateid_copy(&state
->stateid
, stateid
);
994 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
997 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1000 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1002 case FMODE_READ
|FMODE_WRITE
:
1003 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1007 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1009 write_seqlock(&state
->seqlock
);
1010 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
1011 write_sequnlock(&state
->seqlock
);
1014 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1017 * Protect the call to nfs4_state_set_mode_locked and
1018 * serialise the stateid update
1020 write_seqlock(&state
->seqlock
);
1021 if (deleg_stateid
!= NULL
) {
1022 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1023 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1025 if (open_stateid
!= NULL
)
1026 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1027 write_sequnlock(&state
->seqlock
);
1028 spin_lock(&state
->owner
->so_lock
);
1029 update_open_stateflags(state
, fmode
);
1030 spin_unlock(&state
->owner
->so_lock
);
1033 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1035 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1036 struct nfs_delegation
*deleg_cur
;
1039 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1042 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1043 if (deleg_cur
== NULL
)
1046 spin_lock(&deleg_cur
->lock
);
1047 if (nfsi
->delegation
!= deleg_cur
||
1048 (deleg_cur
->type
& fmode
) != fmode
)
1049 goto no_delegation_unlock
;
1051 if (delegation
== NULL
)
1052 delegation
= &deleg_cur
->stateid
;
1053 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1054 goto no_delegation_unlock
;
1056 nfs_mark_delegation_referenced(deleg_cur
);
1057 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1059 no_delegation_unlock
:
1060 spin_unlock(&deleg_cur
->lock
);
1064 if (!ret
&& open_stateid
!= NULL
) {
1065 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1073 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1075 struct nfs_delegation
*delegation
;
1078 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1079 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1084 nfs4_inode_return_delegation(inode
);
1087 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1089 struct nfs4_state
*state
= opendata
->state
;
1090 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1091 struct nfs_delegation
*delegation
;
1092 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1093 fmode_t fmode
= opendata
->o_arg
.fmode
;
1094 nfs4_stateid stateid
;
1098 if (can_open_cached(state
, fmode
, open_mode
)) {
1099 spin_lock(&state
->owner
->so_lock
);
1100 if (can_open_cached(state
, fmode
, open_mode
)) {
1101 update_open_stateflags(state
, fmode
);
1102 spin_unlock(&state
->owner
->so_lock
);
1103 goto out_return_state
;
1105 spin_unlock(&state
->owner
->so_lock
);
1108 delegation
= rcu_dereference(nfsi
->delegation
);
1109 if (!can_open_delegated(delegation
, fmode
)) {
1113 /* Save the delegation */
1114 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1116 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1121 /* Try to update the stateid using the delegation */
1122 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1123 goto out_return_state
;
1126 return ERR_PTR(ret
);
1128 atomic_inc(&state
->count
);
1133 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1135 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1136 struct nfs_delegation
*delegation
;
1137 int delegation_flags
= 0;
1140 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1142 delegation_flags
= delegation
->flags
;
1144 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1145 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1146 "returning a delegation for "
1147 "OPEN(CLAIM_DELEGATE_CUR)\n",
1149 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1150 nfs_inode_set_delegation(state
->inode
,
1151 data
->owner
->so_cred
,
1154 nfs_inode_reclaim_delegation(state
->inode
,
1155 data
->owner
->so_cred
,
1160 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1161 * and update the nfs4_state.
1163 static struct nfs4_state
*
1164 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1166 struct inode
*inode
= data
->state
->inode
;
1167 struct nfs4_state
*state
= data
->state
;
1170 if (!data
->rpc_done
) {
1171 ret
= data
->rpc_status
;
1176 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1177 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1178 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1182 state
= nfs4_get_open_state(inode
, data
->owner
);
1186 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1190 if (data
->o_res
.delegation_type
!= 0)
1191 nfs4_opendata_check_deleg(data
, state
);
1192 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1197 return ERR_PTR(ret
);
1201 static struct nfs4_state
*
1202 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1204 struct inode
*inode
;
1205 struct nfs4_state
*state
= NULL
;
1208 if (!data
->rpc_done
) {
1209 state
= nfs4_try_open_cached(data
);
1214 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1216 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1217 ret
= PTR_ERR(inode
);
1221 state
= nfs4_get_open_state(inode
, data
->owner
);
1224 if (data
->o_res
.delegation_type
!= 0)
1225 nfs4_opendata_check_deleg(data
, state
);
1226 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1234 return ERR_PTR(ret
);
1237 static struct nfs4_state
*
1238 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1240 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1241 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1242 return _nfs4_opendata_to_nfs4_state(data
);
1245 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1247 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1248 struct nfs_open_context
*ctx
;
1250 spin_lock(&state
->inode
->i_lock
);
1251 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1252 if (ctx
->state
!= state
)
1254 get_nfs_open_context(ctx
);
1255 spin_unlock(&state
->inode
->i_lock
);
1258 spin_unlock(&state
->inode
->i_lock
);
1259 return ERR_PTR(-ENOENT
);
1262 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1264 struct nfs4_opendata
*opendata
;
1266 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1267 if (opendata
== NULL
)
1268 return ERR_PTR(-ENOMEM
);
1269 opendata
->state
= state
;
1270 atomic_inc(&state
->count
);
1274 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1276 struct nfs4_state
*newstate
;
1279 opendata
->o_arg
.open_flags
= 0;
1280 opendata
->o_arg
.fmode
= fmode
;
1281 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1282 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1283 nfs4_init_opendata_res(opendata
);
1284 ret
= _nfs4_recover_proc_open(opendata
);
1287 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1288 if (IS_ERR(newstate
))
1289 return PTR_ERR(newstate
);
1290 nfs4_close_state(newstate
, fmode
);
1295 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1297 struct nfs4_state
*newstate
;
1300 /* memory barrier prior to reading state->n_* */
1301 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1303 if (state
->n_rdwr
!= 0) {
1304 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1305 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1308 if (newstate
!= state
)
1311 if (state
->n_wronly
!= 0) {
1312 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1313 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1316 if (newstate
!= state
)
1319 if (state
->n_rdonly
!= 0) {
1320 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1321 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1324 if (newstate
!= state
)
1328 * We may have performed cached opens for all three recoveries.
1329 * Check if we need to update the current stateid.
1331 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1332 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1333 write_seqlock(&state
->seqlock
);
1334 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1335 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1336 write_sequnlock(&state
->seqlock
);
1343 * reclaim state on the server after a reboot.
1345 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1347 struct nfs_delegation
*delegation
;
1348 struct nfs4_opendata
*opendata
;
1349 fmode_t delegation_type
= 0;
1352 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1353 if (IS_ERR(opendata
))
1354 return PTR_ERR(opendata
);
1355 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1356 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1358 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1359 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1360 delegation_type
= delegation
->type
;
1362 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1363 status
= nfs4_open_recover(opendata
, state
);
1364 nfs4_opendata_put(opendata
);
1368 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1370 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1371 struct nfs4_exception exception
= { };
1374 err
= _nfs4_do_open_reclaim(ctx
, state
);
1375 if (err
!= -NFS4ERR_DELAY
)
1377 nfs4_handle_exception(server
, err
, &exception
);
1378 } while (exception
.retry
);
1382 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1384 struct nfs_open_context
*ctx
;
1387 ctx
= nfs4_state_find_open_context(state
);
1389 return PTR_ERR(ctx
);
1390 ret
= nfs4_do_open_reclaim(ctx
, state
);
1391 put_nfs_open_context(ctx
);
1395 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1397 struct nfs4_opendata
*opendata
;
1400 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1401 if (IS_ERR(opendata
))
1402 return PTR_ERR(opendata
);
1403 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1404 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1405 ret
= nfs4_open_recover(opendata
, state
);
1406 nfs4_opendata_put(opendata
);
1410 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1412 struct nfs4_exception exception
= { };
1413 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1416 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1422 case -NFS4ERR_BADSESSION
:
1423 case -NFS4ERR_BADSLOT
:
1424 case -NFS4ERR_BAD_HIGH_SLOT
:
1425 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1426 case -NFS4ERR_DEADSESSION
:
1427 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1429 case -NFS4ERR_STALE_CLIENTID
:
1430 case -NFS4ERR_STALE_STATEID
:
1431 case -NFS4ERR_EXPIRED
:
1432 /* Don't recall a delegation if it was lost */
1433 nfs4_schedule_lease_recovery(server
->nfs_client
);
1437 * The show must go on: exit, but mark the
1438 * stateid as needing recovery.
1440 case -NFS4ERR_DELEG_REVOKED
:
1441 case -NFS4ERR_ADMIN_REVOKED
:
1442 case -NFS4ERR_BAD_STATEID
:
1443 nfs_inode_find_state_and_recover(state
->inode
,
1445 nfs4_schedule_stateid_recovery(server
, state
);
1448 * User RPCSEC_GSS context has expired.
1449 * We cannot recover this stateid now, so
1450 * skip it and allow recovery thread to
1457 err
= nfs4_handle_exception(server
, err
, &exception
);
1458 } while (exception
.retry
);
1463 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1465 struct nfs4_opendata
*data
= calldata
;
1467 data
->rpc_status
= task
->tk_status
;
1468 if (data
->rpc_status
== 0) {
1469 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1470 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1471 renew_lease(data
->o_res
.server
, data
->timestamp
);
1476 static void nfs4_open_confirm_release(void *calldata
)
1478 struct nfs4_opendata
*data
= calldata
;
1479 struct nfs4_state
*state
= NULL
;
1481 /* If this request hasn't been cancelled, do nothing */
1482 if (data
->cancelled
== 0)
1484 /* In case of error, no cleanup! */
1485 if (!data
->rpc_done
)
1487 state
= nfs4_opendata_to_nfs4_state(data
);
1489 nfs4_close_state(state
, data
->o_arg
.fmode
);
1491 nfs4_opendata_put(data
);
1494 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1495 .rpc_call_done
= nfs4_open_confirm_done
,
1496 .rpc_release
= nfs4_open_confirm_release
,
1500 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1502 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1504 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1505 struct rpc_task
*task
;
1506 struct rpc_message msg
= {
1507 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1508 .rpc_argp
= &data
->c_arg
,
1509 .rpc_resp
= &data
->c_res
,
1510 .rpc_cred
= data
->owner
->so_cred
,
1512 struct rpc_task_setup task_setup_data
= {
1513 .rpc_client
= server
->client
,
1514 .rpc_message
= &msg
,
1515 .callback_ops
= &nfs4_open_confirm_ops
,
1516 .callback_data
= data
,
1517 .workqueue
= nfsiod_workqueue
,
1518 .flags
= RPC_TASK_ASYNC
,
1522 kref_get(&data
->kref
);
1524 data
->rpc_status
= 0;
1525 data
->timestamp
= jiffies
;
1526 task
= rpc_run_task(&task_setup_data
);
1528 return PTR_ERR(task
);
1529 status
= nfs4_wait_for_completion_rpc_task(task
);
1531 data
->cancelled
= 1;
1534 status
= data
->rpc_status
;
1539 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1541 struct nfs4_opendata
*data
= calldata
;
1542 struct nfs4_state_owner
*sp
= data
->owner
;
1544 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1547 * Check if we still need to send an OPEN call, or if we can use
1548 * a delegation instead.
1550 if (data
->state
!= NULL
) {
1551 struct nfs_delegation
*delegation
;
1553 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1556 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1557 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1558 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1559 goto unlock_no_action
;
1562 /* Update client id. */
1563 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1564 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1565 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1566 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1567 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1569 data
->timestamp
= jiffies
;
1570 if (nfs4_setup_sequence(data
->o_arg
.server
,
1571 &data
->o_arg
.seq_args
,
1572 &data
->o_res
.seq_res
,
1574 nfs_release_seqid(data
->o_arg
.seqid
);
1576 rpc_call_start(task
);
1581 task
->tk_action
= NULL
;
1585 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1587 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1588 nfs4_open_prepare(task
, calldata
);
1591 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1593 struct nfs4_opendata
*data
= calldata
;
1595 data
->rpc_status
= task
->tk_status
;
1597 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1600 if (task
->tk_status
== 0) {
1601 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1602 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1606 data
->rpc_status
= -ELOOP
;
1609 data
->rpc_status
= -EISDIR
;
1612 data
->rpc_status
= -ENOTDIR
;
1615 renew_lease(data
->o_res
.server
, data
->timestamp
);
1616 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1617 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1622 static void nfs4_open_release(void *calldata
)
1624 struct nfs4_opendata
*data
= calldata
;
1625 struct nfs4_state
*state
= NULL
;
1627 /* If this request hasn't been cancelled, do nothing */
1628 if (data
->cancelled
== 0)
1630 /* In case of error, no cleanup! */
1631 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1633 /* In case we need an open_confirm, no cleanup! */
1634 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1636 state
= nfs4_opendata_to_nfs4_state(data
);
1638 nfs4_close_state(state
, data
->o_arg
.fmode
);
1640 nfs4_opendata_put(data
);
1643 static const struct rpc_call_ops nfs4_open_ops
= {
1644 .rpc_call_prepare
= nfs4_open_prepare
,
1645 .rpc_call_done
= nfs4_open_done
,
1646 .rpc_release
= nfs4_open_release
,
1649 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1650 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1651 .rpc_call_done
= nfs4_open_done
,
1652 .rpc_release
= nfs4_open_release
,
1655 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1657 struct inode
*dir
= data
->dir
->d_inode
;
1658 struct nfs_server
*server
= NFS_SERVER(dir
);
1659 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1660 struct nfs_openres
*o_res
= &data
->o_res
;
1661 struct rpc_task
*task
;
1662 struct rpc_message msg
= {
1663 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1666 .rpc_cred
= data
->owner
->so_cred
,
1668 struct rpc_task_setup task_setup_data
= {
1669 .rpc_client
= server
->client
,
1670 .rpc_message
= &msg
,
1671 .callback_ops
= &nfs4_open_ops
,
1672 .callback_data
= data
,
1673 .workqueue
= nfsiod_workqueue
,
1674 .flags
= RPC_TASK_ASYNC
,
1678 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1679 kref_get(&data
->kref
);
1681 data
->rpc_status
= 0;
1682 data
->cancelled
= 0;
1684 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1685 task
= rpc_run_task(&task_setup_data
);
1687 return PTR_ERR(task
);
1688 status
= nfs4_wait_for_completion_rpc_task(task
);
1690 data
->cancelled
= 1;
1693 status
= data
->rpc_status
;
1699 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1701 struct inode
*dir
= data
->dir
->d_inode
;
1702 struct nfs_openres
*o_res
= &data
->o_res
;
1705 status
= nfs4_run_open_task(data
, 1);
1706 if (status
!= 0 || !data
->rpc_done
)
1709 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1711 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1712 status
= _nfs4_proc_open_confirm(data
);
1720 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1721 struct nfs4_opendata
*opendata
,
1722 struct nfs4_state
*state
, fmode_t fmode
)
1724 struct nfs_access_entry cache
;
1727 /* access call failed or for some reason the server doesn't
1728 * support any access modes -- defer access call until later */
1729 if (opendata
->o_res
.access_supported
== 0)
1733 /* don't check MAY_WRITE - a newly created file may not have
1734 * write mode bits, but POSIX allows the creating process to write */
1735 if (fmode
& FMODE_READ
)
1737 if (fmode
& FMODE_EXEC
)
1741 cache
.jiffies
= jiffies
;
1742 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1743 nfs_access_add_cache(state
->inode
, &cache
);
1745 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1748 /* even though OPEN succeeded, access is denied. Close the file */
1749 nfs4_close_state(state
, fmode
);
1754 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1756 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1758 struct inode
*dir
= data
->dir
->d_inode
;
1759 struct nfs_server
*server
= NFS_SERVER(dir
);
1760 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1761 struct nfs_openres
*o_res
= &data
->o_res
;
1764 status
= nfs4_run_open_task(data
, 0);
1765 if (!data
->rpc_done
)
1768 if (status
== -NFS4ERR_BADNAME
&&
1769 !(o_arg
->open_flags
& O_CREAT
))
1774 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1776 if (o_arg
->open_flags
& O_CREAT
)
1777 update_changeattr(dir
, &o_res
->cinfo
);
1778 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1779 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1780 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1781 status
= _nfs4_proc_open_confirm(data
);
1785 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1786 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1790 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1795 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1796 ret
= nfs4_wait_clnt_recover(clp
);
1799 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1800 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1802 nfs4_schedule_state_manager(clp
);
1808 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1810 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1815 * reclaim state on the server after a network partition.
1816 * Assumes caller holds the appropriate lock
1818 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1820 struct nfs4_opendata
*opendata
;
1823 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1824 if (IS_ERR(opendata
))
1825 return PTR_ERR(opendata
);
1826 ret
= nfs4_open_recover(opendata
, state
);
1828 d_drop(ctx
->dentry
);
1829 nfs4_opendata_put(opendata
);
1833 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1835 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1836 struct nfs4_exception exception
= { };
1840 err
= _nfs4_open_expired(ctx
, state
);
1844 case -NFS4ERR_GRACE
:
1845 case -NFS4ERR_DELAY
:
1846 nfs4_handle_exception(server
, err
, &exception
);
1849 } while (exception
.retry
);
1854 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1856 struct nfs_open_context
*ctx
;
1859 ctx
= nfs4_state_find_open_context(state
);
1861 return PTR_ERR(ctx
);
1862 ret
= nfs4_do_open_expired(ctx
, state
);
1863 put_nfs_open_context(ctx
);
1867 #if defined(CONFIG_NFS_V4_1)
1868 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1870 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1871 nfs4_stateid
*stateid
= &state
->stateid
;
1874 /* If a state reset has been done, test_stateid is unneeded */
1875 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1878 status
= nfs41_test_stateid(server
, stateid
);
1879 if (status
!= NFS_OK
) {
1880 /* Free the stateid unless the server explicitly
1881 * informs us the stateid is unrecognized. */
1882 if (status
!= -NFS4ERR_BAD_STATEID
)
1883 nfs41_free_stateid(server
, stateid
);
1884 nfs_remove_bad_delegation(state
->inode
);
1886 write_seqlock(&state
->seqlock
);
1887 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1888 write_sequnlock(&state
->seqlock
);
1889 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1894 * nfs41_check_open_stateid - possibly free an open stateid
1896 * @state: NFSv4 state for an inode
1898 * Returns NFS_OK if recovery for this stateid is now finished.
1899 * Otherwise a negative NFS4ERR value is returned.
1901 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1903 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1904 nfs4_stateid
*stateid
= &state
->open_stateid
;
1907 /* If a state reset has been done, test_stateid is unneeded */
1908 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1909 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1910 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1911 return -NFS4ERR_BAD_STATEID
;
1913 status
= nfs41_test_stateid(server
, stateid
);
1914 if (status
!= NFS_OK
) {
1915 /* Free the stateid unless the server explicitly
1916 * informs us the stateid is unrecognized. */
1917 if (status
!= -NFS4ERR_BAD_STATEID
)
1918 nfs41_free_stateid(server
, stateid
);
1920 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1921 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1922 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1927 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1931 nfs41_clear_delegation_stateid(state
);
1932 status
= nfs41_check_open_stateid(state
);
1933 if (status
!= NFS_OK
)
1934 status
= nfs4_open_expired(sp
, state
);
1940 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1941 * fields corresponding to attributes that were used to store the verifier.
1942 * Make sure we clobber those fields in the later setattr call
1944 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1946 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1947 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1948 sattr
->ia_valid
|= ATTR_ATIME
;
1950 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1951 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1952 sattr
->ia_valid
|= ATTR_MTIME
;
1956 * Returns a referenced nfs4_state
1958 static int _nfs4_do_open(struct inode
*dir
,
1959 struct dentry
*dentry
,
1962 struct iattr
*sattr
,
1963 struct rpc_cred
*cred
,
1964 struct nfs4_state
**res
,
1965 struct nfs4_threshold
**ctx_th
)
1967 struct nfs4_state_owner
*sp
;
1968 struct nfs4_state
*state
= NULL
;
1969 struct nfs_server
*server
= NFS_SERVER(dir
);
1970 struct nfs4_opendata
*opendata
;
1973 /* Protect against reboot recovery conflicts */
1975 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1977 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1980 status
= nfs4_recover_expired_lease(server
);
1982 goto err_put_state_owner
;
1983 if (dentry
->d_inode
!= NULL
)
1984 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1986 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1987 if (opendata
== NULL
)
1988 goto err_put_state_owner
;
1990 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
1991 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
1992 if (!opendata
->f_attr
.mdsthreshold
)
1993 goto err_opendata_put
;
1994 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
1996 if (dentry
->d_inode
!= NULL
)
1997 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1999 status
= _nfs4_proc_open(opendata
);
2001 goto err_opendata_put
;
2003 state
= nfs4_opendata_to_nfs4_state(opendata
);
2004 status
= PTR_ERR(state
);
2006 goto err_opendata_put
;
2007 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2008 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2010 status
= nfs4_opendata_access(cred
, opendata
, state
, fmode
);
2012 goto err_opendata_put
;
2014 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
2015 nfs4_exclusive_attrset(opendata
, sattr
);
2017 nfs_fattr_init(opendata
->o_res
.f_attr
);
2018 status
= nfs4_do_setattr(state
->inode
, cred
,
2019 opendata
->o_res
.f_attr
, sattr
,
2022 nfs_setattr_update_inode(state
->inode
, sattr
);
2023 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2026 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2027 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2029 kfree(opendata
->f_attr
.mdsthreshold
);
2030 opendata
->f_attr
.mdsthreshold
= NULL
;
2032 nfs4_opendata_put(opendata
);
2033 nfs4_put_state_owner(sp
);
2037 kfree(opendata
->f_attr
.mdsthreshold
);
2038 nfs4_opendata_put(opendata
);
2039 err_put_state_owner
:
2040 nfs4_put_state_owner(sp
);
2047 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2048 struct dentry
*dentry
,
2051 struct iattr
*sattr
,
2052 struct rpc_cred
*cred
,
2053 struct nfs4_threshold
**ctx_th
)
2055 struct nfs4_exception exception
= { };
2056 struct nfs4_state
*res
;
2059 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
2061 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
2065 /* NOTE: BAD_SEQID means the server and client disagree about the
2066 * book-keeping w.r.t. state-changing operations
2067 * (OPEN/CLOSE/LOCK/LOCKU...)
2068 * It is actually a sign of a bug on the client or on the server.
2070 * If we receive a BAD_SEQID error in the particular case of
2071 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2072 * have unhashed the old state_owner for us, and that we can
2073 * therefore safely retry using a new one. We should still warn
2074 * the user though...
2076 if (status
== -NFS4ERR_BAD_SEQID
) {
2077 pr_warn_ratelimited("NFS: v4 server %s "
2078 " returned a bad sequence-id error!\n",
2079 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2080 exception
.retry
= 1;
2084 * BAD_STATEID on OPEN means that the server cancelled our
2085 * state before it received the OPEN_CONFIRM.
2086 * Recover by retrying the request as per the discussion
2087 * on Page 181 of RFC3530.
2089 if (status
== -NFS4ERR_BAD_STATEID
) {
2090 exception
.retry
= 1;
2093 if (status
== -EAGAIN
) {
2094 /* We must have found a delegation */
2095 exception
.retry
= 1;
2098 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
2099 status
, &exception
));
2100 } while (exception
.retry
);
2104 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2105 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2106 struct nfs4_state
*state
)
2108 struct nfs_server
*server
= NFS_SERVER(inode
);
2109 struct nfs_setattrargs arg
= {
2110 .fh
= NFS_FH(inode
),
2113 .bitmask
= server
->attr_bitmask
,
2115 struct nfs_setattrres res
= {
2119 struct rpc_message msg
= {
2120 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2125 unsigned long timestamp
= jiffies
;
2128 nfs_fattr_init(fattr
);
2130 if (state
!= NULL
) {
2131 struct nfs_lockowner lockowner
= {
2132 .l_owner
= current
->files
,
2133 .l_pid
= current
->tgid
,
2135 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2137 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
2139 /* Use that stateid */
2141 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2143 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2144 if (status
== 0 && state
!= NULL
)
2145 renew_lease(server
, timestamp
);
2149 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2150 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2151 struct nfs4_state
*state
)
2153 struct nfs_server
*server
= NFS_SERVER(inode
);
2154 struct nfs4_exception exception
= {
2160 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2162 case -NFS4ERR_OPENMODE
:
2163 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2165 if (sattr
->ia_valid
& ATTR_OPEN
)
2170 err
= nfs4_handle_exception(server
, err
, &exception
);
2171 } while (exception
.retry
);
2176 struct nfs4_closedata
{
2177 struct inode
*inode
;
2178 struct nfs4_state
*state
;
2179 struct nfs_closeargs arg
;
2180 struct nfs_closeres res
;
2181 struct nfs_fattr fattr
;
2182 unsigned long timestamp
;
2187 static void nfs4_free_closedata(void *data
)
2189 struct nfs4_closedata
*calldata
= data
;
2190 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2191 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2194 pnfs_roc_release(calldata
->state
->inode
);
2195 nfs4_put_open_state(calldata
->state
);
2196 nfs_free_seqid(calldata
->arg
.seqid
);
2197 nfs4_put_state_owner(sp
);
2198 nfs_sb_deactive_async(sb
);
2202 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2205 spin_lock(&state
->owner
->so_lock
);
2206 if (!(fmode
& FMODE_READ
))
2207 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2208 if (!(fmode
& FMODE_WRITE
))
2209 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2210 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2211 spin_unlock(&state
->owner
->so_lock
);
2214 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2216 struct nfs4_closedata
*calldata
= data
;
2217 struct nfs4_state
*state
= calldata
->state
;
2218 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2220 dprintk("%s: begin!\n", __func__
);
2221 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2223 /* hmm. we are done with the inode, and in the process of freeing
2224 * the state_owner. we keep this around to process errors
2226 switch (task
->tk_status
) {
2229 pnfs_roc_set_barrier(state
->inode
,
2230 calldata
->roc_barrier
);
2231 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2232 renew_lease(server
, calldata
->timestamp
);
2233 nfs4_close_clear_stateid_flags(state
,
2234 calldata
->arg
.fmode
);
2236 case -NFS4ERR_STALE_STATEID
:
2237 case -NFS4ERR_OLD_STATEID
:
2238 case -NFS4ERR_BAD_STATEID
:
2239 case -NFS4ERR_EXPIRED
:
2240 if (calldata
->arg
.fmode
== 0)
2243 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2244 rpc_restart_call_prepare(task
);
2246 nfs_release_seqid(calldata
->arg
.seqid
);
2247 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2248 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2251 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2253 struct nfs4_closedata
*calldata
= data
;
2254 struct nfs4_state
*state
= calldata
->state
;
2255 struct inode
*inode
= calldata
->inode
;
2258 dprintk("%s: begin!\n", __func__
);
2259 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2262 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2263 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2264 spin_lock(&state
->owner
->so_lock
);
2265 /* Calculate the change in open mode */
2266 if (state
->n_rdwr
== 0) {
2267 if (state
->n_rdonly
== 0) {
2268 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2269 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2270 calldata
->arg
.fmode
&= ~FMODE_READ
;
2272 if (state
->n_wronly
== 0) {
2273 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2274 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2275 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2278 spin_unlock(&state
->owner
->so_lock
);
2281 /* Note: exit _without_ calling nfs4_close_done */
2282 task
->tk_action
= NULL
;
2286 if (calldata
->arg
.fmode
== 0) {
2287 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2288 if (calldata
->roc
&&
2289 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
))
2293 nfs_fattr_init(calldata
->res
.fattr
);
2294 calldata
->timestamp
= jiffies
;
2295 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2296 &calldata
->arg
.seq_args
,
2297 &calldata
->res
.seq_res
,
2299 nfs_release_seqid(calldata
->arg
.seqid
);
2301 rpc_call_start(task
);
2303 dprintk("%s: done!\n", __func__
);
2306 static const struct rpc_call_ops nfs4_close_ops
= {
2307 .rpc_call_prepare
= nfs4_close_prepare
,
2308 .rpc_call_done
= nfs4_close_done
,
2309 .rpc_release
= nfs4_free_closedata
,
2313 * It is possible for data to be read/written from a mem-mapped file
2314 * after the sys_close call (which hits the vfs layer as a flush).
2315 * This means that we can't safely call nfsv4 close on a file until
2316 * the inode is cleared. This in turn means that we are not good
2317 * NFSv4 citizens - we do not indicate to the server to update the file's
2318 * share state even when we are done with one of the three share
2319 * stateid's in the inode.
2321 * NOTE: Caller must be holding the sp->so_owner semaphore!
2323 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2325 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2326 struct nfs4_closedata
*calldata
;
2327 struct nfs4_state_owner
*sp
= state
->owner
;
2328 struct rpc_task
*task
;
2329 struct rpc_message msg
= {
2330 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2331 .rpc_cred
= state
->owner
->so_cred
,
2333 struct rpc_task_setup task_setup_data
= {
2334 .rpc_client
= server
->client
,
2335 .rpc_message
= &msg
,
2336 .callback_ops
= &nfs4_close_ops
,
2337 .workqueue
= nfsiod_workqueue
,
2338 .flags
= RPC_TASK_ASYNC
,
2340 int status
= -ENOMEM
;
2342 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2343 if (calldata
== NULL
)
2345 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2346 calldata
->inode
= state
->inode
;
2347 calldata
->state
= state
;
2348 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2349 calldata
->arg
.stateid
= &state
->open_stateid
;
2350 /* Serialization for the sequence id */
2351 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2352 if (calldata
->arg
.seqid
== NULL
)
2353 goto out_free_calldata
;
2354 calldata
->arg
.fmode
= 0;
2355 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2356 calldata
->res
.fattr
= &calldata
->fattr
;
2357 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2358 calldata
->res
.server
= server
;
2359 calldata
->roc
= pnfs_roc(state
->inode
);
2360 nfs_sb_active(calldata
->inode
->i_sb
);
2362 msg
.rpc_argp
= &calldata
->arg
;
2363 msg
.rpc_resp
= &calldata
->res
;
2364 task_setup_data
.callback_data
= calldata
;
2365 task
= rpc_run_task(&task_setup_data
);
2367 return PTR_ERR(task
);
2370 status
= rpc_wait_for_completion_task(task
);
2376 nfs4_put_open_state(state
);
2377 nfs4_put_state_owner(sp
);
2381 static struct inode
*
2382 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2384 struct nfs4_state
*state
;
2386 /* Protect against concurrent sillydeletes */
2387 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2388 ctx
->cred
, &ctx
->mdsthreshold
);
2390 return ERR_CAST(state
);
2392 return igrab(state
->inode
);
2395 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2397 if (ctx
->state
== NULL
)
2400 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2402 nfs4_close_state(ctx
->state
, ctx
->mode
);
2405 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2407 struct nfs4_server_caps_arg args
= {
2410 struct nfs4_server_caps_res res
= {};
2411 struct rpc_message msg
= {
2412 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2418 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2420 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2421 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2422 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2423 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2424 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2425 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2426 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2427 server
->caps
|= NFS_CAP_ACLS
;
2428 if (res
.has_links
!= 0)
2429 server
->caps
|= NFS_CAP_HARDLINKS
;
2430 if (res
.has_symlinks
!= 0)
2431 server
->caps
|= NFS_CAP_SYMLINKS
;
2432 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2433 server
->caps
|= NFS_CAP_FILEID
;
2434 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2435 server
->caps
|= NFS_CAP_MODE
;
2436 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2437 server
->caps
|= NFS_CAP_NLINK
;
2438 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2439 server
->caps
|= NFS_CAP_OWNER
;
2440 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2441 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2442 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2443 server
->caps
|= NFS_CAP_ATIME
;
2444 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2445 server
->caps
|= NFS_CAP_CTIME
;
2446 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2447 server
->caps
|= NFS_CAP_MTIME
;
2449 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2450 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2451 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2452 server
->acl_bitmask
= res
.acl_bitmask
;
2453 server
->fh_expire_type
= res
.fh_expire_type
;
2459 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2461 struct nfs4_exception exception
= { };
2464 err
= nfs4_handle_exception(server
,
2465 _nfs4_server_capabilities(server
, fhandle
),
2467 } while (exception
.retry
);
2471 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2472 struct nfs_fsinfo
*info
)
2474 struct nfs4_lookup_root_arg args
= {
2475 .bitmask
= nfs4_fattr_bitmap
,
2477 struct nfs4_lookup_res res
= {
2479 .fattr
= info
->fattr
,
2482 struct rpc_message msg
= {
2483 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2488 nfs_fattr_init(info
->fattr
);
2489 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2492 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2493 struct nfs_fsinfo
*info
)
2495 struct nfs4_exception exception
= { };
2498 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2501 case -NFS4ERR_WRONGSEC
:
2504 err
= nfs4_handle_exception(server
, err
, &exception
);
2506 } while (exception
.retry
);
2511 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2512 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2514 struct rpc_auth
*auth
;
2517 auth
= rpcauth_create(flavor
, server
->client
);
2522 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2527 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2528 struct nfs_fsinfo
*info
)
2530 int i
, len
, status
= 0;
2531 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2533 len
= rpcauth_list_flavors(flav_array
, ARRAY_SIZE(flav_array
));
2537 for (i
= 0; i
< len
; i
++) {
2538 /* AUTH_UNIX is the default flavor if none was specified,
2539 * thus has already been tried. */
2540 if (flav_array
[i
] == RPC_AUTH_UNIX
)
2543 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2544 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2549 * -EACCESS could mean that the user doesn't have correct permissions
2550 * to access the mount. It could also mean that we tried to mount
2551 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2552 * existing mount programs don't handle -EACCES very well so it should
2553 * be mapped to -EPERM instead.
2555 if (status
== -EACCES
)
2561 * get the file handle for the "/" directory on the server
2563 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2564 struct nfs_fsinfo
*info
)
2566 int minor_version
= server
->nfs_client
->cl_minorversion
;
2567 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2568 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2570 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2571 * by nfs4_map_errors() as this function exits.
2573 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2575 status
= nfs4_server_capabilities(server
, fhandle
);
2577 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2578 return nfs4_map_errors(status
);
2581 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2582 struct nfs_fsinfo
*info
)
2585 struct nfs_fattr
*fattr
= info
->fattr
;
2587 error
= nfs4_server_capabilities(server
, mntfh
);
2589 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2593 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2595 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2599 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2600 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2601 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2607 * Get locations and (maybe) other attributes of a referral.
2608 * Note that we'll actually follow the referral later when
2609 * we detect fsid mismatch in inode revalidation
2611 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2612 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2613 struct nfs_fh
*fhandle
)
2615 int status
= -ENOMEM
;
2616 struct page
*page
= NULL
;
2617 struct nfs4_fs_locations
*locations
= NULL
;
2619 page
= alloc_page(GFP_KERNEL
);
2622 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2623 if (locations
== NULL
)
2626 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2629 /* Make sure server returned a different fsid for the referral */
2630 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2631 dprintk("%s: server did not return a different fsid for"
2632 " a referral at %s\n", __func__
, name
->name
);
2636 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2637 nfs_fixup_referral_attributes(&locations
->fattr
);
2639 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2640 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2641 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2649 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2651 struct nfs4_getattr_arg args
= {
2653 .bitmask
= server
->attr_bitmask
,
2655 struct nfs4_getattr_res res
= {
2659 struct rpc_message msg
= {
2660 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2665 nfs_fattr_init(fattr
);
2666 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2669 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2671 struct nfs4_exception exception
= { };
2674 err
= nfs4_handle_exception(server
,
2675 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2677 } while (exception
.retry
);
2682 * The file is not closed if it is opened due to the a request to change
2683 * the size of the file. The open call will not be needed once the
2684 * VFS layer lookup-intents are implemented.
2686 * Close is called when the inode is destroyed.
2687 * If we haven't opened the file for O_WRONLY, we
2688 * need to in the size_change case to obtain a stateid.
2691 * Because OPEN is always done by name in nfsv4, it is
2692 * possible that we opened a different file by the same
2693 * name. We can recognize this race condition, but we
2694 * can't do anything about it besides returning an error.
2696 * This will be fixed with VFS changes (lookup-intent).
2699 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2700 struct iattr
*sattr
)
2702 struct inode
*inode
= dentry
->d_inode
;
2703 struct rpc_cred
*cred
= NULL
;
2704 struct nfs4_state
*state
= NULL
;
2707 if (pnfs_ld_layoutret_on_setattr(inode
))
2708 pnfs_return_layout(inode
);
2710 nfs_fattr_init(fattr
);
2712 /* Deal with open(O_TRUNC) */
2713 if (sattr
->ia_valid
& ATTR_OPEN
)
2714 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2716 /* Optimization: if the end result is no change, don't RPC */
2717 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2720 /* Search for an existing open(O_WRITE) file */
2721 if (sattr
->ia_valid
& ATTR_FILE
) {
2722 struct nfs_open_context
*ctx
;
2724 ctx
= nfs_file_open_context(sattr
->ia_file
);
2731 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2733 nfs_setattr_update_inode(inode
, sattr
);
2737 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2738 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2739 struct nfs_fattr
*fattr
)
2741 struct nfs_server
*server
= NFS_SERVER(dir
);
2743 struct nfs4_lookup_arg args
= {
2744 .bitmask
= server
->attr_bitmask
,
2745 .dir_fh
= NFS_FH(dir
),
2748 struct nfs4_lookup_res res
= {
2753 struct rpc_message msg
= {
2754 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2759 nfs_fattr_init(fattr
);
2761 dprintk("NFS call lookup %s\n", name
->name
);
2762 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2763 dprintk("NFS reply lookup: %d\n", status
);
2767 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2769 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2770 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2771 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2775 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2776 struct qstr
*name
, struct nfs_fh
*fhandle
,
2777 struct nfs_fattr
*fattr
)
2779 struct nfs4_exception exception
= { };
2780 struct rpc_clnt
*client
= *clnt
;
2783 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2785 case -NFS4ERR_BADNAME
:
2788 case -NFS4ERR_MOVED
:
2789 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2791 case -NFS4ERR_WRONGSEC
:
2793 if (client
!= *clnt
)
2796 client
= nfs4_create_sec_client(client
, dir
, name
);
2798 return PTR_ERR(client
);
2800 exception
.retry
= 1;
2803 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2805 } while (exception
.retry
);
2810 else if (client
!= *clnt
)
2811 rpc_shutdown_client(client
);
2816 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2817 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2820 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2822 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2823 if (client
!= NFS_CLIENT(dir
)) {
2824 rpc_shutdown_client(client
);
2825 nfs_fixup_secinfo_attributes(fattr
);
2831 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2832 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2835 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2837 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2839 rpc_shutdown_client(client
);
2840 return ERR_PTR(status
);
2845 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2847 struct nfs_server
*server
= NFS_SERVER(inode
);
2848 struct nfs4_accessargs args
= {
2849 .fh
= NFS_FH(inode
),
2850 .bitmask
= server
->cache_consistency_bitmask
,
2852 struct nfs4_accessres res
= {
2855 struct rpc_message msg
= {
2856 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2859 .rpc_cred
= entry
->cred
,
2861 int mode
= entry
->mask
;
2865 * Determine which access bits we want to ask for...
2867 if (mode
& MAY_READ
)
2868 args
.access
|= NFS4_ACCESS_READ
;
2869 if (S_ISDIR(inode
->i_mode
)) {
2870 if (mode
& MAY_WRITE
)
2871 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2872 if (mode
& MAY_EXEC
)
2873 args
.access
|= NFS4_ACCESS_LOOKUP
;
2875 if (mode
& MAY_WRITE
)
2876 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2877 if (mode
& MAY_EXEC
)
2878 args
.access
|= NFS4_ACCESS_EXECUTE
;
2881 res
.fattr
= nfs_alloc_fattr();
2882 if (res
.fattr
== NULL
)
2885 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2887 nfs_access_set_mask(entry
, res
.access
);
2888 nfs_refresh_inode(inode
, res
.fattr
);
2890 nfs_free_fattr(res
.fattr
);
2894 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2896 struct nfs4_exception exception
= { };
2899 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2900 _nfs4_proc_access(inode
, entry
),
2902 } while (exception
.retry
);
2907 * TODO: For the time being, we don't try to get any attributes
2908 * along with any of the zero-copy operations READ, READDIR,
2911 * In the case of the first three, we want to put the GETATTR
2912 * after the read-type operation -- this is because it is hard
2913 * to predict the length of a GETATTR response in v4, and thus
2914 * align the READ data correctly. This means that the GETATTR
2915 * may end up partially falling into the page cache, and we should
2916 * shift it into the 'tail' of the xdr_buf before processing.
2917 * To do this efficiently, we need to know the total length
2918 * of data received, which doesn't seem to be available outside
2921 * In the case of WRITE, we also want to put the GETATTR after
2922 * the operation -- in this case because we want to make sure
2923 * we get the post-operation mtime and size.
2925 * Both of these changes to the XDR layer would in fact be quite
2926 * minor, but I decided to leave them for a subsequent patch.
2928 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2929 unsigned int pgbase
, unsigned int pglen
)
2931 struct nfs4_readlink args
= {
2932 .fh
= NFS_FH(inode
),
2937 struct nfs4_readlink_res res
;
2938 struct rpc_message msg
= {
2939 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2944 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2947 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2948 unsigned int pgbase
, unsigned int pglen
)
2950 struct nfs4_exception exception
= { };
2953 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2954 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2956 } while (exception
.retry
);
2961 * This is just for mknod. open(O_CREAT) will always do ->open_context().
2964 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2967 struct nfs_open_context
*ctx
;
2968 struct nfs4_state
*state
;
2971 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
2973 return PTR_ERR(ctx
);
2975 sattr
->ia_mode
&= ~current_umask();
2976 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
2977 flags
, sattr
, ctx
->cred
,
2978 &ctx
->mdsthreshold
);
2980 if (IS_ERR(state
)) {
2981 status
= PTR_ERR(state
);
2984 d_add(dentry
, igrab(state
->inode
));
2985 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2988 put_nfs_open_context(ctx
);
2992 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2994 struct nfs_server
*server
= NFS_SERVER(dir
);
2995 struct nfs_removeargs args
= {
2999 struct nfs_removeres res
= {
3002 struct rpc_message msg
= {
3003 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3009 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3011 update_changeattr(dir
, &res
.cinfo
);
3015 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3017 struct nfs4_exception exception
= { };
3020 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3021 _nfs4_proc_remove(dir
, name
),
3023 } while (exception
.retry
);
3027 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3029 struct nfs_server
*server
= NFS_SERVER(dir
);
3030 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3031 struct nfs_removeres
*res
= msg
->rpc_resp
;
3033 res
->server
= server
;
3034 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3035 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3038 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3040 if (nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3041 &data
->args
.seq_args
,
3045 rpc_call_start(task
);
3048 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3050 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
3052 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3054 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3056 update_changeattr(dir
, &res
->cinfo
);
3060 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3062 struct nfs_server
*server
= NFS_SERVER(dir
);
3063 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3064 struct nfs_renameres
*res
= msg
->rpc_resp
;
3066 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3067 res
->server
= server
;
3068 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3071 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3073 if (nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3074 &data
->args
.seq_args
,
3078 rpc_call_start(task
);
3081 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3082 struct inode
*new_dir
)
3084 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3086 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3088 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3091 update_changeattr(old_dir
, &res
->old_cinfo
);
3092 update_changeattr(new_dir
, &res
->new_cinfo
);
3096 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3097 struct inode
*new_dir
, struct qstr
*new_name
)
3099 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3100 struct nfs_renameargs arg
= {
3101 .old_dir
= NFS_FH(old_dir
),
3102 .new_dir
= NFS_FH(new_dir
),
3103 .old_name
= old_name
,
3104 .new_name
= new_name
,
3106 struct nfs_renameres res
= {
3109 struct rpc_message msg
= {
3110 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3114 int status
= -ENOMEM
;
3116 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3118 update_changeattr(old_dir
, &res
.old_cinfo
);
3119 update_changeattr(new_dir
, &res
.new_cinfo
);
3124 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3125 struct inode
*new_dir
, struct qstr
*new_name
)
3127 struct nfs4_exception exception
= { };
3130 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3131 _nfs4_proc_rename(old_dir
, old_name
,
3134 } while (exception
.retry
);
3138 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3140 struct nfs_server
*server
= NFS_SERVER(inode
);
3141 struct nfs4_link_arg arg
= {
3142 .fh
= NFS_FH(inode
),
3143 .dir_fh
= NFS_FH(dir
),
3145 .bitmask
= server
->attr_bitmask
,
3147 struct nfs4_link_res res
= {
3150 struct rpc_message msg
= {
3151 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3155 int status
= -ENOMEM
;
3157 res
.fattr
= nfs_alloc_fattr();
3158 if (res
.fattr
== NULL
)
3161 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3163 update_changeattr(dir
, &res
.cinfo
);
3164 nfs_post_op_update_inode(inode
, res
.fattr
);
3167 nfs_free_fattr(res
.fattr
);
3171 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3173 struct nfs4_exception exception
= { };
3176 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3177 _nfs4_proc_link(inode
, dir
, name
),
3179 } while (exception
.retry
);
3183 struct nfs4_createdata
{
3184 struct rpc_message msg
;
3185 struct nfs4_create_arg arg
;
3186 struct nfs4_create_res res
;
3188 struct nfs_fattr fattr
;
3191 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3192 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3194 struct nfs4_createdata
*data
;
3196 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3198 struct nfs_server
*server
= NFS_SERVER(dir
);
3200 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3201 data
->msg
.rpc_argp
= &data
->arg
;
3202 data
->msg
.rpc_resp
= &data
->res
;
3203 data
->arg
.dir_fh
= NFS_FH(dir
);
3204 data
->arg
.server
= server
;
3205 data
->arg
.name
= name
;
3206 data
->arg
.attrs
= sattr
;
3207 data
->arg
.ftype
= ftype
;
3208 data
->arg
.bitmask
= server
->attr_bitmask
;
3209 data
->res
.server
= server
;
3210 data
->res
.fh
= &data
->fh
;
3211 data
->res
.fattr
= &data
->fattr
;
3212 nfs_fattr_init(data
->res
.fattr
);
3217 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3219 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3220 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3222 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3223 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3228 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3233 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3234 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3236 struct nfs4_createdata
*data
;
3237 int status
= -ENAMETOOLONG
;
3239 if (len
> NFS4_MAXPATHLEN
)
3243 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3247 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3248 data
->arg
.u
.symlink
.pages
= &page
;
3249 data
->arg
.u
.symlink
.len
= len
;
3251 status
= nfs4_do_create(dir
, dentry
, data
);
3253 nfs4_free_createdata(data
);
3258 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3259 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3261 struct nfs4_exception exception
= { };
3264 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3265 _nfs4_proc_symlink(dir
, dentry
, page
,
3268 } while (exception
.retry
);
3272 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3273 struct iattr
*sattr
)
3275 struct nfs4_createdata
*data
;
3276 int status
= -ENOMEM
;
3278 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3282 status
= nfs4_do_create(dir
, dentry
, data
);
3284 nfs4_free_createdata(data
);
3289 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3290 struct iattr
*sattr
)
3292 struct nfs4_exception exception
= { };
3295 sattr
->ia_mode
&= ~current_umask();
3297 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3298 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3300 } while (exception
.retry
);
3304 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3305 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3307 struct inode
*dir
= dentry
->d_inode
;
3308 struct nfs4_readdir_arg args
= {
3313 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3316 struct nfs4_readdir_res res
;
3317 struct rpc_message msg
= {
3318 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3325 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3326 dentry
->d_parent
->d_name
.name
,
3327 dentry
->d_name
.name
,
3328 (unsigned long long)cookie
);
3329 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3330 res
.pgbase
= args
.pgbase
;
3331 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3333 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3334 status
+= args
.pgbase
;
3337 nfs_invalidate_atime(dir
);
3339 dprintk("%s: returns %d\n", __func__
, status
);
3343 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3344 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3346 struct nfs4_exception exception
= { };
3349 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3350 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3351 pages
, count
, plus
),
3353 } while (exception
.retry
);
3357 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3358 struct iattr
*sattr
, dev_t rdev
)
3360 struct nfs4_createdata
*data
;
3361 int mode
= sattr
->ia_mode
;
3362 int status
= -ENOMEM
;
3364 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3369 data
->arg
.ftype
= NF4FIFO
;
3370 else if (S_ISBLK(mode
)) {
3371 data
->arg
.ftype
= NF4BLK
;
3372 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3373 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3375 else if (S_ISCHR(mode
)) {
3376 data
->arg
.ftype
= NF4CHR
;
3377 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3378 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3379 } else if (!S_ISSOCK(mode
)) {
3384 status
= nfs4_do_create(dir
, dentry
, data
);
3386 nfs4_free_createdata(data
);
3391 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3392 struct iattr
*sattr
, dev_t rdev
)
3394 struct nfs4_exception exception
= { };
3397 sattr
->ia_mode
&= ~current_umask();
3399 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3400 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3402 } while (exception
.retry
);
3406 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3407 struct nfs_fsstat
*fsstat
)
3409 struct nfs4_statfs_arg args
= {
3411 .bitmask
= server
->attr_bitmask
,
3413 struct nfs4_statfs_res res
= {
3416 struct rpc_message msg
= {
3417 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3422 nfs_fattr_init(fsstat
->fattr
);
3423 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3426 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3428 struct nfs4_exception exception
= { };
3431 err
= nfs4_handle_exception(server
,
3432 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3434 } while (exception
.retry
);
3438 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3439 struct nfs_fsinfo
*fsinfo
)
3441 struct nfs4_fsinfo_arg args
= {
3443 .bitmask
= server
->attr_bitmask
,
3445 struct nfs4_fsinfo_res res
= {
3448 struct rpc_message msg
= {
3449 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3454 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3457 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3459 struct nfs4_exception exception
= { };
3463 err
= nfs4_handle_exception(server
,
3464 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3466 } while (exception
.retry
);
3470 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3474 nfs_fattr_init(fsinfo
->fattr
);
3475 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3477 /* block layout checks this! */
3478 server
->pnfs_blksize
= fsinfo
->blksize
;
3479 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3485 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3486 struct nfs_pathconf
*pathconf
)
3488 struct nfs4_pathconf_arg args
= {
3490 .bitmask
= server
->attr_bitmask
,
3492 struct nfs4_pathconf_res res
= {
3493 .pathconf
= pathconf
,
3495 struct rpc_message msg
= {
3496 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3501 /* None of the pathconf attributes are mandatory to implement */
3502 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3503 memset(pathconf
, 0, sizeof(*pathconf
));
3507 nfs_fattr_init(pathconf
->fattr
);
3508 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3511 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3512 struct nfs_pathconf
*pathconf
)
3514 struct nfs4_exception exception
= { };
3518 err
= nfs4_handle_exception(server
,
3519 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3521 } while (exception
.retry
);
3525 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3527 nfs_invalidate_atime(data
->header
->inode
);
3530 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3532 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3534 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3535 rpc_restart_call_prepare(task
);
3539 __nfs4_read_done_cb(data
);
3540 if (task
->tk_status
> 0)
3541 renew_lease(server
, data
->timestamp
);
3545 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3548 dprintk("--> %s\n", __func__
);
3550 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3553 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3554 nfs4_read_done_cb(task
, data
);
3557 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3559 data
->timestamp
= jiffies
;
3560 data
->read_done_cb
= nfs4_read_done_cb
;
3561 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3562 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3565 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3567 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3568 &data
->args
.seq_args
,
3572 rpc_call_start(task
);
3575 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3577 struct inode
*inode
= data
->header
->inode
;
3579 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3580 rpc_restart_call_prepare(task
);
3583 if (task
->tk_status
>= 0) {
3584 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3585 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3590 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3592 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3594 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3595 nfs4_write_done_cb(task
, data
);
3599 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3601 const struct nfs_pgio_header
*hdr
= data
->header
;
3603 /* Don't request attributes for pNFS or O_DIRECT writes */
3604 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3606 /* Otherwise, request attributes if and only if we don't hold
3609 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3612 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3614 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3616 if (!nfs4_write_need_cache_consistency_data(data
)) {
3617 data
->args
.bitmask
= NULL
;
3618 data
->res
.fattr
= NULL
;
3620 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3622 if (!data
->write_done_cb
)
3623 data
->write_done_cb
= nfs4_write_done_cb
;
3624 data
->res
.server
= server
;
3625 data
->timestamp
= jiffies
;
3627 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3628 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3631 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3633 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3634 &data
->args
.seq_args
,
3638 rpc_call_start(task
);
3641 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3643 if (nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3644 &data
->args
.seq_args
,
3648 rpc_call_start(task
);
3651 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3653 struct inode
*inode
= data
->inode
;
3655 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3656 rpc_restart_call_prepare(task
);
3662 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3664 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3666 return data
->commit_done_cb(task
, data
);
3669 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3671 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3673 if (data
->commit_done_cb
== NULL
)
3674 data
->commit_done_cb
= nfs4_commit_done_cb
;
3675 data
->res
.server
= server
;
3676 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3677 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3680 struct nfs4_renewdata
{
3681 struct nfs_client
*client
;
3682 unsigned long timestamp
;
3686 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3687 * standalone procedure for queueing an asynchronous RENEW.
3689 static void nfs4_renew_release(void *calldata
)
3691 struct nfs4_renewdata
*data
= calldata
;
3692 struct nfs_client
*clp
= data
->client
;
3694 if (atomic_read(&clp
->cl_count
) > 1)
3695 nfs4_schedule_state_renewal(clp
);
3696 nfs_put_client(clp
);
3700 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3702 struct nfs4_renewdata
*data
= calldata
;
3703 struct nfs_client
*clp
= data
->client
;
3704 unsigned long timestamp
= data
->timestamp
;
3706 if (task
->tk_status
< 0) {
3707 /* Unless we're shutting down, schedule state recovery! */
3708 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3710 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3711 nfs4_schedule_lease_recovery(clp
);
3714 nfs4_schedule_path_down_recovery(clp
);
3716 do_renew_lease(clp
, timestamp
);
3719 static const struct rpc_call_ops nfs4_renew_ops
= {
3720 .rpc_call_done
= nfs4_renew_done
,
3721 .rpc_release
= nfs4_renew_release
,
3724 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3726 struct rpc_message msg
= {
3727 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3731 struct nfs4_renewdata
*data
;
3733 if (renew_flags
== 0)
3735 if (!atomic_inc_not_zero(&clp
->cl_count
))
3737 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3741 data
->timestamp
= jiffies
;
3742 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3743 &nfs4_renew_ops
, data
);
3746 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3748 struct rpc_message msg
= {
3749 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3753 unsigned long now
= jiffies
;
3756 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3759 do_renew_lease(clp
, now
);
3763 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3765 return (server
->caps
& NFS_CAP_ACLS
)
3766 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3767 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3770 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3771 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3774 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3776 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3777 struct page
**pages
, unsigned int *pgbase
)
3779 struct page
*newpage
, **spages
;
3785 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3786 newpage
= alloc_page(GFP_KERNEL
);
3788 if (newpage
== NULL
)
3790 memcpy(page_address(newpage
), buf
, len
);
3795 } while (buflen
!= 0);
3801 __free_page(spages
[rc
-1]);
3805 struct nfs4_cached_acl
{
3811 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3813 struct nfs_inode
*nfsi
= NFS_I(inode
);
3815 spin_lock(&inode
->i_lock
);
3816 kfree(nfsi
->nfs4_acl
);
3817 nfsi
->nfs4_acl
= acl
;
3818 spin_unlock(&inode
->i_lock
);
3821 static void nfs4_zap_acl_attr(struct inode
*inode
)
3823 nfs4_set_cached_acl(inode
, NULL
);
3826 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3828 struct nfs_inode
*nfsi
= NFS_I(inode
);
3829 struct nfs4_cached_acl
*acl
;
3832 spin_lock(&inode
->i_lock
);
3833 acl
= nfsi
->nfs4_acl
;
3836 if (buf
== NULL
) /* user is just asking for length */
3838 if (acl
->cached
== 0)
3840 ret
= -ERANGE
; /* see getxattr(2) man page */
3841 if (acl
->len
> buflen
)
3843 memcpy(buf
, acl
->data
, acl
->len
);
3847 spin_unlock(&inode
->i_lock
);
3851 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3853 struct nfs4_cached_acl
*acl
;
3854 size_t buflen
= sizeof(*acl
) + acl_len
;
3856 if (buflen
<= PAGE_SIZE
) {
3857 acl
= kmalloc(buflen
, GFP_KERNEL
);
3861 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3863 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3870 nfs4_set_cached_acl(inode
, acl
);
3874 * The getxattr API returns the required buffer length when called with a
3875 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3876 * the required buf. On a NULL buf, we send a page of data to the server
3877 * guessing that the ACL request can be serviced by a page. If so, we cache
3878 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3879 * the cache. If not so, we throw away the page, and cache the required
3880 * length. The next getxattr call will then produce another round trip to
3881 * the server, this time with the input buf of the required size.
3883 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3885 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3886 struct nfs_getaclargs args
= {
3887 .fh
= NFS_FH(inode
),
3891 struct nfs_getaclres res
= {
3894 struct rpc_message msg
= {
3895 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3899 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3900 int ret
= -ENOMEM
, i
;
3902 /* As long as we're doing a round trip to the server anyway,
3903 * let's be prepared for a page of acl data. */
3906 if (npages
> ARRAY_SIZE(pages
))
3909 for (i
= 0; i
< npages
; i
++) {
3910 pages
[i
] = alloc_page(GFP_KERNEL
);
3915 /* for decoding across pages */
3916 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3917 if (!res
.acl_scratch
)
3920 args
.acl_len
= npages
* PAGE_SIZE
;
3921 args
.acl_pgbase
= 0;
3923 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3924 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3925 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3926 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3930 /* Handle the case where the passed-in buffer is too short */
3931 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
3932 /* Did the user only issue a request for the acl length? */
3938 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
3940 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
3944 for (i
= 0; i
< npages
; i
++)
3946 __free_page(pages
[i
]);
3947 if (res
.acl_scratch
)
3948 __free_page(res
.acl_scratch
);
3952 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3954 struct nfs4_exception exception
= { };
3957 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3960 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3961 } while (exception
.retry
);
3965 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3967 struct nfs_server
*server
= NFS_SERVER(inode
);
3970 if (!nfs4_server_supports_acls(server
))
3972 ret
= nfs_revalidate_inode(server
, inode
);
3975 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3976 nfs_zap_acl_cache(inode
);
3977 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3979 /* -ENOENT is returned if there is no ACL or if there is an ACL
3980 * but no cached acl data, just the acl length */
3982 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3985 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3987 struct nfs_server
*server
= NFS_SERVER(inode
);
3988 struct page
*pages
[NFS4ACL_MAXPAGES
];
3989 struct nfs_setaclargs arg
= {
3990 .fh
= NFS_FH(inode
),
3994 struct nfs_setaclres res
;
3995 struct rpc_message msg
= {
3996 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4000 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4003 if (!nfs4_server_supports_acls(server
))
4005 if (npages
> ARRAY_SIZE(pages
))
4007 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4010 nfs4_inode_return_delegation(inode
);
4011 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4014 * Free each page after tx, so the only ref left is
4015 * held by the network stack
4018 put_page(pages
[i
-1]);
4021 * Acl update can result in inode attribute update.
4022 * so mark the attribute cache invalid.
4024 spin_lock(&inode
->i_lock
);
4025 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4026 spin_unlock(&inode
->i_lock
);
4027 nfs_access_zap_cache(inode
);
4028 nfs_zap_acl_cache(inode
);
4032 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4034 struct nfs4_exception exception
= { };
4037 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4038 __nfs4_proc_set_acl(inode
, buf
, buflen
),
4040 } while (exception
.retry
);
4045 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4047 struct nfs_client
*clp
= server
->nfs_client
;
4049 if (task
->tk_status
>= 0)
4051 switch(task
->tk_status
) {
4052 case -NFS4ERR_DELEG_REVOKED
:
4053 case -NFS4ERR_ADMIN_REVOKED
:
4054 case -NFS4ERR_BAD_STATEID
:
4057 nfs_remove_bad_delegation(state
->inode
);
4058 case -NFS4ERR_OPENMODE
:
4061 nfs4_schedule_stateid_recovery(server
, state
);
4062 goto wait_on_recovery
;
4063 case -NFS4ERR_EXPIRED
:
4065 nfs4_schedule_stateid_recovery(server
, state
);
4066 case -NFS4ERR_STALE_STATEID
:
4067 case -NFS4ERR_STALE_CLIENTID
:
4068 nfs4_schedule_lease_recovery(clp
);
4069 goto wait_on_recovery
;
4070 #if defined(CONFIG_NFS_V4_1)
4071 case -NFS4ERR_BADSESSION
:
4072 case -NFS4ERR_BADSLOT
:
4073 case -NFS4ERR_BAD_HIGH_SLOT
:
4074 case -NFS4ERR_DEADSESSION
:
4075 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4076 case -NFS4ERR_SEQ_FALSE_RETRY
:
4077 case -NFS4ERR_SEQ_MISORDERED
:
4078 dprintk("%s ERROR %d, Reset session\n", __func__
,
4080 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4081 task
->tk_status
= 0;
4083 #endif /* CONFIG_NFS_V4_1 */
4084 case -NFS4ERR_DELAY
:
4085 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4086 case -NFS4ERR_GRACE
:
4088 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4089 task
->tk_status
= 0;
4091 case -NFS4ERR_RETRY_UNCACHED_REP
:
4092 case -NFS4ERR_OLD_STATEID
:
4093 task
->tk_status
= 0;
4096 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4099 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4100 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4101 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4102 task
->tk_status
= 0;
4106 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4107 nfs4_verifier
*bootverf
)
4111 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4112 /* An impossible timestamp guarantees this value
4113 * will never match a generated boot time. */
4115 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4117 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4118 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4119 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4121 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4125 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4126 char *buf
, size_t len
)
4128 unsigned int result
;
4131 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4133 rpc_peeraddr2str(clp
->cl_rpcclient
,
4135 rpc_peeraddr2str(clp
->cl_rpcclient
,
4136 RPC_DISPLAY_PROTO
));
4142 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4143 char *buf
, size_t len
)
4145 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4147 if (nfs4_client_id_uniquifier
[0] != '\0')
4148 nodename
= nfs4_client_id_uniquifier
;
4149 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4150 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4155 * nfs4_proc_setclientid - Negotiate client ID
4156 * @clp: state data structure
4157 * @program: RPC program for NFSv4 callback service
4158 * @port: IP port number for NFS4 callback service
4159 * @cred: RPC credential to use for this call
4160 * @res: where to place the result
4162 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4164 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4165 unsigned short port
, struct rpc_cred
*cred
,
4166 struct nfs4_setclientid_res
*res
)
4168 nfs4_verifier sc_verifier
;
4169 struct nfs4_setclientid setclientid
= {
4170 .sc_verifier
= &sc_verifier
,
4172 .sc_cb_ident
= clp
->cl_cb_ident
,
4174 struct rpc_message msg
= {
4175 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4176 .rpc_argp
= &setclientid
,
4182 /* nfs_client_id4 */
4183 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4184 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4185 setclientid
.sc_name_len
=
4186 nfs4_init_uniform_client_string(clp
,
4187 setclientid
.sc_name
,
4188 sizeof(setclientid
.sc_name
));
4190 setclientid
.sc_name_len
=
4191 nfs4_init_nonuniform_client_string(clp
,
4192 setclientid
.sc_name
,
4193 sizeof(setclientid
.sc_name
));
4196 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4197 sizeof(setclientid
.sc_netid
),
4198 rpc_peeraddr2str(clp
->cl_rpcclient
,
4199 RPC_DISPLAY_NETID
));
4201 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4202 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4203 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4205 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4206 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4207 setclientid
.sc_name_len
, setclientid
.sc_name
);
4208 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4209 dprintk("NFS reply setclientid: %d\n", status
);
4214 * nfs4_proc_setclientid_confirm - Confirm client ID
4215 * @clp: state data structure
4216 * @res: result of a previous SETCLIENTID
4217 * @cred: RPC credential to use for this call
4219 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4221 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4222 struct nfs4_setclientid_res
*arg
,
4223 struct rpc_cred
*cred
)
4225 struct nfs_fsinfo fsinfo
;
4226 struct rpc_message msg
= {
4227 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4229 .rpc_resp
= &fsinfo
,
4235 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4236 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4239 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4241 spin_lock(&clp
->cl_lock
);
4242 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4243 clp
->cl_last_renewal
= now
;
4244 spin_unlock(&clp
->cl_lock
);
4246 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4250 struct nfs4_delegreturndata
{
4251 struct nfs4_delegreturnargs args
;
4252 struct nfs4_delegreturnres res
;
4254 nfs4_stateid stateid
;
4255 unsigned long timestamp
;
4256 struct nfs_fattr fattr
;
4260 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4262 struct nfs4_delegreturndata
*data
= calldata
;
4264 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4267 switch (task
->tk_status
) {
4268 case -NFS4ERR_STALE_STATEID
:
4269 case -NFS4ERR_EXPIRED
:
4271 renew_lease(data
->res
.server
, data
->timestamp
);
4274 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4276 rpc_restart_call_prepare(task
);
4280 data
->rpc_status
= task
->tk_status
;
4283 static void nfs4_delegreturn_release(void *calldata
)
4288 #if defined(CONFIG_NFS_V4_1)
4289 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4291 struct nfs4_delegreturndata
*d_data
;
4293 d_data
= (struct nfs4_delegreturndata
*)data
;
4295 if (nfs4_setup_sequence(d_data
->res
.server
,
4296 &d_data
->args
.seq_args
,
4297 &d_data
->res
.seq_res
, task
))
4299 rpc_call_start(task
);
4301 #endif /* CONFIG_NFS_V4_1 */
4303 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4304 #if defined(CONFIG_NFS_V4_1)
4305 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4306 #endif /* CONFIG_NFS_V4_1 */
4307 .rpc_call_done
= nfs4_delegreturn_done
,
4308 .rpc_release
= nfs4_delegreturn_release
,
4311 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4313 struct nfs4_delegreturndata
*data
;
4314 struct nfs_server
*server
= NFS_SERVER(inode
);
4315 struct rpc_task
*task
;
4316 struct rpc_message msg
= {
4317 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4320 struct rpc_task_setup task_setup_data
= {
4321 .rpc_client
= server
->client
,
4322 .rpc_message
= &msg
,
4323 .callback_ops
= &nfs4_delegreturn_ops
,
4324 .flags
= RPC_TASK_ASYNC
,
4328 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4331 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4332 data
->args
.fhandle
= &data
->fh
;
4333 data
->args
.stateid
= &data
->stateid
;
4334 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4335 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4336 nfs4_stateid_copy(&data
->stateid
, stateid
);
4337 data
->res
.fattr
= &data
->fattr
;
4338 data
->res
.server
= server
;
4339 nfs_fattr_init(data
->res
.fattr
);
4340 data
->timestamp
= jiffies
;
4341 data
->rpc_status
= 0;
4343 task_setup_data
.callback_data
= data
;
4344 msg
.rpc_argp
= &data
->args
;
4345 msg
.rpc_resp
= &data
->res
;
4346 task
= rpc_run_task(&task_setup_data
);
4348 return PTR_ERR(task
);
4351 status
= nfs4_wait_for_completion_rpc_task(task
);
4354 status
= data
->rpc_status
;
4356 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4358 nfs_refresh_inode(inode
, &data
->fattr
);
4364 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4366 struct nfs_server
*server
= NFS_SERVER(inode
);
4367 struct nfs4_exception exception
= { };
4370 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4372 case -NFS4ERR_STALE_STATEID
:
4373 case -NFS4ERR_EXPIRED
:
4377 err
= nfs4_handle_exception(server
, err
, &exception
);
4378 } while (exception
.retry
);
4382 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4383 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4386 * sleep, with exponential backoff, and retry the LOCK operation.
4388 static unsigned long
4389 nfs4_set_lock_task_retry(unsigned long timeout
)
4391 freezable_schedule_timeout_killable(timeout
);
4393 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4394 return NFS4_LOCK_MAXTIMEOUT
;
4398 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4400 struct inode
*inode
= state
->inode
;
4401 struct nfs_server
*server
= NFS_SERVER(inode
);
4402 struct nfs_client
*clp
= server
->nfs_client
;
4403 struct nfs_lockt_args arg
= {
4404 .fh
= NFS_FH(inode
),
4407 struct nfs_lockt_res res
= {
4410 struct rpc_message msg
= {
4411 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4414 .rpc_cred
= state
->owner
->so_cred
,
4416 struct nfs4_lock_state
*lsp
;
4419 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4420 status
= nfs4_set_lock_state(state
, request
);
4423 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4424 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4425 arg
.lock_owner
.s_dev
= server
->s_dev
;
4426 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4429 request
->fl_type
= F_UNLCK
;
4431 case -NFS4ERR_DENIED
:
4434 request
->fl_ops
->fl_release_private(request
);
4439 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4441 struct nfs4_exception exception
= { };
4445 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4446 _nfs4_proc_getlk(state
, cmd
, request
),
4448 } while (exception
.retry
);
4452 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4455 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4457 res
= posix_lock_file_wait(file
, fl
);
4460 res
= flock_lock_file_wait(file
, fl
);
4468 struct nfs4_unlockdata
{
4469 struct nfs_locku_args arg
;
4470 struct nfs_locku_res res
;
4471 struct nfs4_lock_state
*lsp
;
4472 struct nfs_open_context
*ctx
;
4473 struct file_lock fl
;
4474 const struct nfs_server
*server
;
4475 unsigned long timestamp
;
4478 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4479 struct nfs_open_context
*ctx
,
4480 struct nfs4_lock_state
*lsp
,
4481 struct nfs_seqid
*seqid
)
4483 struct nfs4_unlockdata
*p
;
4484 struct inode
*inode
= lsp
->ls_state
->inode
;
4486 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4489 p
->arg
.fh
= NFS_FH(inode
);
4491 p
->arg
.seqid
= seqid
;
4492 p
->res
.seqid
= seqid
;
4493 p
->arg
.stateid
= &lsp
->ls_stateid
;
4495 atomic_inc(&lsp
->ls_count
);
4496 /* Ensure we don't close file until we're done freeing locks! */
4497 p
->ctx
= get_nfs_open_context(ctx
);
4498 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4499 p
->server
= NFS_SERVER(inode
);
4503 static void nfs4_locku_release_calldata(void *data
)
4505 struct nfs4_unlockdata
*calldata
= data
;
4506 nfs_free_seqid(calldata
->arg
.seqid
);
4507 nfs4_put_lock_state(calldata
->lsp
);
4508 put_nfs_open_context(calldata
->ctx
);
4512 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4514 struct nfs4_unlockdata
*calldata
= data
;
4516 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4518 switch (task
->tk_status
) {
4520 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4521 &calldata
->res
.stateid
);
4522 renew_lease(calldata
->server
, calldata
->timestamp
);
4524 case -NFS4ERR_BAD_STATEID
:
4525 case -NFS4ERR_OLD_STATEID
:
4526 case -NFS4ERR_STALE_STATEID
:
4527 case -NFS4ERR_EXPIRED
:
4530 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4531 rpc_restart_call_prepare(task
);
4533 nfs_release_seqid(calldata
->arg
.seqid
);
4536 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4538 struct nfs4_unlockdata
*calldata
= data
;
4540 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4542 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4543 /* Note: exit _without_ running nfs4_locku_done */
4544 task
->tk_action
= NULL
;
4547 calldata
->timestamp
= jiffies
;
4548 if (nfs4_setup_sequence(calldata
->server
,
4549 &calldata
->arg
.seq_args
,
4550 &calldata
->res
.seq_res
,
4552 nfs_release_seqid(calldata
->arg
.seqid
);
4554 rpc_call_start(task
);
4557 static const struct rpc_call_ops nfs4_locku_ops
= {
4558 .rpc_call_prepare
= nfs4_locku_prepare
,
4559 .rpc_call_done
= nfs4_locku_done
,
4560 .rpc_release
= nfs4_locku_release_calldata
,
4563 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4564 struct nfs_open_context
*ctx
,
4565 struct nfs4_lock_state
*lsp
,
4566 struct nfs_seqid
*seqid
)
4568 struct nfs4_unlockdata
*data
;
4569 struct rpc_message msg
= {
4570 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4571 .rpc_cred
= ctx
->cred
,
4573 struct rpc_task_setup task_setup_data
= {
4574 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4575 .rpc_message
= &msg
,
4576 .callback_ops
= &nfs4_locku_ops
,
4577 .workqueue
= nfsiod_workqueue
,
4578 .flags
= RPC_TASK_ASYNC
,
4581 /* Ensure this is an unlock - when canceling a lock, the
4582 * canceled lock is passed in, and it won't be an unlock.
4584 fl
->fl_type
= F_UNLCK
;
4586 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4588 nfs_free_seqid(seqid
);
4589 return ERR_PTR(-ENOMEM
);
4592 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4593 msg
.rpc_argp
= &data
->arg
;
4594 msg
.rpc_resp
= &data
->res
;
4595 task_setup_data
.callback_data
= data
;
4596 return rpc_run_task(&task_setup_data
);
4599 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4601 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4602 struct nfs_seqid
*seqid
;
4603 struct nfs4_lock_state
*lsp
;
4604 struct rpc_task
*task
;
4606 unsigned char fl_flags
= request
->fl_flags
;
4608 status
= nfs4_set_lock_state(state
, request
);
4609 /* Unlock _before_ we do the RPC call */
4610 request
->fl_flags
|= FL_EXISTS
;
4611 down_read(&nfsi
->rwsem
);
4612 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4613 up_read(&nfsi
->rwsem
);
4616 up_read(&nfsi
->rwsem
);
4619 /* Is this a delegated lock? */
4620 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4622 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4623 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4627 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4628 status
= PTR_ERR(task
);
4631 status
= nfs4_wait_for_completion_rpc_task(task
);
4634 request
->fl_flags
= fl_flags
;
4638 struct nfs4_lockdata
{
4639 struct nfs_lock_args arg
;
4640 struct nfs_lock_res res
;
4641 struct nfs4_lock_state
*lsp
;
4642 struct nfs_open_context
*ctx
;
4643 struct file_lock fl
;
4644 unsigned long timestamp
;
4647 struct nfs_server
*server
;
4650 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4651 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4654 struct nfs4_lockdata
*p
;
4655 struct inode
*inode
= lsp
->ls_state
->inode
;
4656 struct nfs_server
*server
= NFS_SERVER(inode
);
4658 p
= kzalloc(sizeof(*p
), gfp_mask
);
4662 p
->arg
.fh
= NFS_FH(inode
);
4664 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4665 if (p
->arg
.open_seqid
== NULL
)
4667 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4668 if (p
->arg
.lock_seqid
== NULL
)
4669 goto out_free_seqid
;
4670 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4671 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4672 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4673 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4674 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4677 atomic_inc(&lsp
->ls_count
);
4678 p
->ctx
= get_nfs_open_context(ctx
);
4679 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4682 nfs_free_seqid(p
->arg
.open_seqid
);
4688 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4690 struct nfs4_lockdata
*data
= calldata
;
4691 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4693 dprintk("%s: begin!\n", __func__
);
4694 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4696 /* Do we need to do an open_to_lock_owner? */
4697 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4698 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4699 goto out_release_lock_seqid
;
4700 data
->arg
.open_stateid
= &state
->stateid
;
4701 data
->arg
.new_lock_owner
= 1;
4702 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4704 data
->arg
.new_lock_owner
= 0;
4705 data
->timestamp
= jiffies
;
4706 if (nfs4_setup_sequence(data
->server
,
4707 &data
->arg
.seq_args
,
4710 rpc_call_start(task
);
4713 nfs_release_seqid(data
->arg
.open_seqid
);
4714 out_release_lock_seqid
:
4715 nfs_release_seqid(data
->arg
.lock_seqid
);
4716 dprintk("%s: done!, ret = %d\n", __func__
, task
->tk_status
);
4719 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4721 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4722 nfs4_lock_prepare(task
, calldata
);
4725 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4727 struct nfs4_lockdata
*data
= calldata
;
4729 dprintk("%s: begin!\n", __func__
);
4731 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4734 data
->rpc_status
= task
->tk_status
;
4735 if (data
->arg
.new_lock_owner
!= 0) {
4736 if (data
->rpc_status
== 0)
4737 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4741 if (data
->rpc_status
== 0) {
4742 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4743 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4744 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4747 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4750 static void nfs4_lock_release(void *calldata
)
4752 struct nfs4_lockdata
*data
= calldata
;
4754 dprintk("%s: begin!\n", __func__
);
4755 nfs_free_seqid(data
->arg
.open_seqid
);
4756 if (data
->cancelled
!= 0) {
4757 struct rpc_task
*task
;
4758 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4759 data
->arg
.lock_seqid
);
4761 rpc_put_task_async(task
);
4762 dprintk("%s: cancelling lock!\n", __func__
);
4764 nfs_free_seqid(data
->arg
.lock_seqid
);
4765 nfs4_put_lock_state(data
->lsp
);
4766 put_nfs_open_context(data
->ctx
);
4768 dprintk("%s: done!\n", __func__
);
4771 static const struct rpc_call_ops nfs4_lock_ops
= {
4772 .rpc_call_prepare
= nfs4_lock_prepare
,
4773 .rpc_call_done
= nfs4_lock_done
,
4774 .rpc_release
= nfs4_lock_release
,
4777 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4778 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4779 .rpc_call_done
= nfs4_lock_done
,
4780 .rpc_release
= nfs4_lock_release
,
4783 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4786 case -NFS4ERR_ADMIN_REVOKED
:
4787 case -NFS4ERR_BAD_STATEID
:
4788 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4789 if (new_lock_owner
!= 0 ||
4790 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4791 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4793 case -NFS4ERR_STALE_STATEID
:
4794 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4795 case -NFS4ERR_EXPIRED
:
4796 nfs4_schedule_lease_recovery(server
->nfs_client
);
4800 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4802 struct nfs4_lockdata
*data
;
4803 struct rpc_task
*task
;
4804 struct rpc_message msg
= {
4805 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4806 .rpc_cred
= state
->owner
->so_cred
,
4808 struct rpc_task_setup task_setup_data
= {
4809 .rpc_client
= NFS_CLIENT(state
->inode
),
4810 .rpc_message
= &msg
,
4811 .callback_ops
= &nfs4_lock_ops
,
4812 .workqueue
= nfsiod_workqueue
,
4813 .flags
= RPC_TASK_ASYNC
,
4817 dprintk("%s: begin!\n", __func__
);
4818 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4819 fl
->fl_u
.nfs4_fl
.owner
,
4820 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4824 data
->arg
.block
= 1;
4825 if (recovery_type
> NFS_LOCK_NEW
) {
4826 if (recovery_type
== NFS_LOCK_RECLAIM
)
4827 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4828 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4830 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4831 msg
.rpc_argp
= &data
->arg
;
4832 msg
.rpc_resp
= &data
->res
;
4833 task_setup_data
.callback_data
= data
;
4834 task
= rpc_run_task(&task_setup_data
);
4836 return PTR_ERR(task
);
4837 ret
= nfs4_wait_for_completion_rpc_task(task
);
4839 ret
= data
->rpc_status
;
4841 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4842 data
->arg
.new_lock_owner
, ret
);
4844 data
->cancelled
= 1;
4846 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4850 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4852 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4853 struct nfs4_exception exception
= {
4854 .inode
= state
->inode
,
4859 /* Cache the lock if possible... */
4860 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4862 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4863 if (err
!= -NFS4ERR_DELAY
)
4865 nfs4_handle_exception(server
, err
, &exception
);
4866 } while (exception
.retry
);
4870 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4872 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4873 struct nfs4_exception exception
= {
4874 .inode
= state
->inode
,
4878 err
= nfs4_set_lock_state(state
, request
);
4882 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4884 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4888 case -NFS4ERR_GRACE
:
4889 case -NFS4ERR_DELAY
:
4890 nfs4_handle_exception(server
, err
, &exception
);
4893 } while (exception
.retry
);
4898 #if defined(CONFIG_NFS_V4_1)
4900 * nfs41_check_expired_locks - possibly free a lock stateid
4902 * @state: NFSv4 state for an inode
4904 * Returns NFS_OK if recovery for this stateid is now finished.
4905 * Otherwise a negative NFS4ERR value is returned.
4907 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4909 int status
, ret
= -NFS4ERR_BAD_STATEID
;
4910 struct nfs4_lock_state
*lsp
;
4911 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4913 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4914 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
4915 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4916 if (status
!= NFS_OK
) {
4917 /* Free the stateid unless the server
4918 * informs us the stateid is unrecognized. */
4919 if (status
!= -NFS4ERR_BAD_STATEID
)
4920 nfs41_free_stateid(server
,
4922 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
4931 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4933 int status
= NFS_OK
;
4935 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4936 status
= nfs41_check_expired_locks(state
);
4937 if (status
!= NFS_OK
)
4938 status
= nfs4_lock_expired(state
, request
);
4943 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4945 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4946 unsigned char fl_flags
= request
->fl_flags
;
4947 int status
= -ENOLCK
;
4949 if ((fl_flags
& FL_POSIX
) &&
4950 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4952 /* Is this a delegated open? */
4953 status
= nfs4_set_lock_state(state
, request
);
4956 request
->fl_flags
|= FL_ACCESS
;
4957 status
= do_vfs_lock(request
->fl_file
, request
);
4960 down_read(&nfsi
->rwsem
);
4961 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4962 /* Yes: cache locks! */
4963 /* ...but avoid races with delegation recall... */
4964 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4965 status
= do_vfs_lock(request
->fl_file
, request
);
4968 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4971 /* Note: we always want to sleep here! */
4972 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4973 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4974 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4975 "manager!\n", __func__
);
4977 up_read(&nfsi
->rwsem
);
4979 request
->fl_flags
= fl_flags
;
4983 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4985 struct nfs4_exception exception
= {
4987 .inode
= state
->inode
,
4992 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4993 if (err
== -NFS4ERR_DENIED
)
4995 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4997 } while (exception
.retry
);
5002 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5004 struct nfs_open_context
*ctx
;
5005 struct nfs4_state
*state
;
5006 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5009 /* verify open state */
5010 ctx
= nfs_file_open_context(filp
);
5013 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5016 if (IS_GETLK(cmd
)) {
5018 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5022 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5025 if (request
->fl_type
== F_UNLCK
) {
5027 return nfs4_proc_unlck(state
, cmd
, request
);
5034 * Don't rely on the VFS having checked the file open mode,
5035 * since it won't do this for flock() locks.
5037 switch (request
->fl_type
) {
5039 if (!(filp
->f_mode
& FMODE_READ
))
5043 if (!(filp
->f_mode
& FMODE_WRITE
))
5048 status
= nfs4_proc_setlk(state
, cmd
, request
);
5049 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5051 timeout
= nfs4_set_lock_task_retry(timeout
);
5052 status
= -ERESTARTSYS
;
5055 } while(status
< 0);
5059 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
5061 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5062 struct nfs4_exception exception
= { };
5065 err
= nfs4_set_lock_state(state
, fl
);
5069 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5072 printk(KERN_ERR
"NFS: %s: unhandled error "
5073 "%d.\n", __func__
, err
);
5077 case -NFS4ERR_EXPIRED
:
5078 nfs4_schedule_stateid_recovery(server
, state
);
5079 case -NFS4ERR_STALE_CLIENTID
:
5080 case -NFS4ERR_STALE_STATEID
:
5081 nfs4_schedule_lease_recovery(server
->nfs_client
);
5083 case -NFS4ERR_BADSESSION
:
5084 case -NFS4ERR_BADSLOT
:
5085 case -NFS4ERR_BAD_HIGH_SLOT
:
5086 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
5087 case -NFS4ERR_DEADSESSION
:
5088 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
5092 * The show must go on: exit, but mark the
5093 * stateid as needing recovery.
5095 case -NFS4ERR_DELEG_REVOKED
:
5096 case -NFS4ERR_ADMIN_REVOKED
:
5097 case -NFS4ERR_BAD_STATEID
:
5098 case -NFS4ERR_OPENMODE
:
5099 nfs4_schedule_stateid_recovery(server
, state
);
5104 * User RPCSEC_GSS context has expired.
5105 * We cannot recover this stateid now, so
5106 * skip it and allow recovery thread to
5112 case -NFS4ERR_DENIED
:
5113 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
5116 case -NFS4ERR_DELAY
:
5119 err
= nfs4_handle_exception(server
, err
, &exception
);
5120 } while (exception
.retry
);
5125 struct nfs_release_lockowner_data
{
5126 struct nfs4_lock_state
*lsp
;
5127 struct nfs_server
*server
;
5128 struct nfs_release_lockowner_args args
;
5131 static void nfs4_release_lockowner_release(void *calldata
)
5133 struct nfs_release_lockowner_data
*data
= calldata
;
5134 nfs4_free_lock_state(data
->server
, data
->lsp
);
5138 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5139 .rpc_release
= nfs4_release_lockowner_release
,
5142 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
5144 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
5145 struct nfs_release_lockowner_data
*data
;
5146 struct rpc_message msg
= {
5147 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5150 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5152 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5156 data
->server
= server
;
5157 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5158 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5159 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5160 msg
.rpc_argp
= &data
->args
;
5161 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5165 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5167 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5168 const void *buf
, size_t buflen
,
5169 int flags
, int type
)
5171 if (strcmp(key
, "") != 0)
5174 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5177 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5178 void *buf
, size_t buflen
, int type
)
5180 if (strcmp(key
, "") != 0)
5183 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5186 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5187 size_t list_len
, const char *name
,
5188 size_t name_len
, int type
)
5190 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5192 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5195 if (list
&& len
<= list_len
)
5196 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5201 * nfs_fhget will use either the mounted_on_fileid or the fileid
5203 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5205 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5206 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5207 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5208 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5211 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5212 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5213 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5217 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5218 const struct qstr
*name
,
5219 struct nfs4_fs_locations
*fs_locations
,
5222 struct nfs_server
*server
= NFS_SERVER(dir
);
5224 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5226 struct nfs4_fs_locations_arg args
= {
5227 .dir_fh
= NFS_FH(dir
),
5232 struct nfs4_fs_locations_res res
= {
5233 .fs_locations
= fs_locations
,
5235 struct rpc_message msg
= {
5236 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5242 dprintk("%s: start\n", __func__
);
5244 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5245 * is not supported */
5246 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5247 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5249 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5251 nfs_fattr_init(&fs_locations
->fattr
);
5252 fs_locations
->server
= server
;
5253 fs_locations
->nlocations
= 0;
5254 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5255 dprintk("%s: returned status = %d\n", __func__
, status
);
5259 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5260 const struct qstr
*name
,
5261 struct nfs4_fs_locations
*fs_locations
,
5264 struct nfs4_exception exception
= { };
5267 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5268 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5270 } while (exception
.retry
);
5274 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5277 struct nfs4_secinfo_arg args
= {
5278 .dir_fh
= NFS_FH(dir
),
5281 struct nfs4_secinfo_res res
= {
5284 struct rpc_message msg
= {
5285 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5290 dprintk("NFS call secinfo %s\n", name
->name
);
5291 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5292 dprintk("NFS reply secinfo: %d\n", status
);
5296 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5297 struct nfs4_secinfo_flavors
*flavors
)
5299 struct nfs4_exception exception
= { };
5302 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5303 _nfs4_proc_secinfo(dir
, name
, flavors
),
5305 } while (exception
.retry
);
5309 #ifdef CONFIG_NFS_V4_1
5311 * Check the exchange flags returned by the server for invalid flags, having
5312 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5315 static int nfs4_check_cl_exchange_flags(u32 flags
)
5317 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5319 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5320 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5322 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5326 return -NFS4ERR_INVAL
;
5330 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5331 struct nfs41_server_scope
*b
)
5333 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5334 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5341 * nfs4_proc_bind_conn_to_session()
5343 * The 4.1 client currently uses the same TCP connection for the
5344 * fore and backchannel.
5346 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5349 struct nfs41_bind_conn_to_session_res res
;
5350 struct rpc_message msg
= {
5352 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5358 dprintk("--> %s\n", __func__
);
5360 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5361 if (unlikely(res
.session
== NULL
)) {
5366 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5368 if (memcmp(res
.session
->sess_id
.data
,
5369 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5370 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5374 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5375 dprintk("NFS: %s: Unexpected direction from server\n",
5380 if (res
.use_conn_in_rdma_mode
) {
5381 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5390 dprintk("<-- %s status= %d\n", __func__
, status
);
5395 * nfs4_proc_exchange_id()
5397 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5399 * Since the clientid has expired, all compounds using sessions
5400 * associated with the stale clientid will be returning
5401 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5402 * be in some phase of session reset.
5404 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5406 nfs4_verifier verifier
;
5407 struct nfs41_exchange_id_args args
= {
5408 .verifier
= &verifier
,
5410 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5412 struct nfs41_exchange_id_res res
= {
5416 struct rpc_message msg
= {
5417 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5423 nfs4_init_boot_verifier(clp
, &verifier
);
5424 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5426 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5427 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5428 args
.id_len
, args
.id
);
5430 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5432 if (unlikely(res
.server_owner
== NULL
)) {
5437 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5439 if (unlikely(res
.server_scope
== NULL
)) {
5441 goto out_server_owner
;
5444 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5445 if (unlikely(res
.impl_id
== NULL
)) {
5447 goto out_server_scope
;
5450 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5452 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5455 clp
->cl_clientid
= res
.clientid
;
5456 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5457 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5458 clp
->cl_seqid
= res
.seqid
;
5460 kfree(clp
->cl_serverowner
);
5461 clp
->cl_serverowner
= res
.server_owner
;
5462 res
.server_owner
= NULL
;
5464 /* use the most recent implementation id */
5465 kfree(clp
->cl_implid
);
5466 clp
->cl_implid
= res
.impl_id
;
5468 if (clp
->cl_serverscope
!= NULL
&&
5469 !nfs41_same_server_scope(clp
->cl_serverscope
,
5470 res
.server_scope
)) {
5471 dprintk("%s: server_scope mismatch detected\n",
5473 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5474 kfree(clp
->cl_serverscope
);
5475 clp
->cl_serverscope
= NULL
;
5478 if (clp
->cl_serverscope
== NULL
) {
5479 clp
->cl_serverscope
= res
.server_scope
;
5486 kfree(res
.server_owner
);
5488 kfree(res
.server_scope
);
5490 if (clp
->cl_implid
!= NULL
)
5491 dprintk("NFS reply exchange_id: Server Implementation ID: "
5492 "domain: %s, name: %s, date: %llu,%u\n",
5493 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5494 clp
->cl_implid
->date
.seconds
,
5495 clp
->cl_implid
->date
.nseconds
);
5496 dprintk("NFS reply exchange_id: %d\n", status
);
5500 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5501 struct rpc_cred
*cred
)
5503 struct rpc_message msg
= {
5504 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5510 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5512 dprintk("NFS: Got error %d from the server %s on "
5513 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5517 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5518 struct rpc_cred
*cred
)
5523 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5524 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5526 case -NFS4ERR_DELAY
:
5527 case -NFS4ERR_CLIENTID_BUSY
:
5537 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5539 struct rpc_cred
*cred
;
5542 if (clp
->cl_mvops
->minor_version
< 1)
5544 if (clp
->cl_exchange_flags
== 0)
5546 if (clp
->cl_preserve_clid
)
5548 cred
= nfs4_get_exchange_id_cred(clp
);
5549 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5554 case -NFS4ERR_STALE_CLIENTID
:
5555 clp
->cl_exchange_flags
= 0;
5561 struct nfs4_get_lease_time_data
{
5562 struct nfs4_get_lease_time_args
*args
;
5563 struct nfs4_get_lease_time_res
*res
;
5564 struct nfs_client
*clp
;
5567 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5571 struct nfs4_get_lease_time_data
*data
=
5572 (struct nfs4_get_lease_time_data
*)calldata
;
5574 dprintk("--> %s\n", __func__
);
5575 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5576 /* just setup sequence, do not trigger session recovery
5577 since we're invoked within one */
5578 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
5579 &data
->args
->la_seq_args
,
5580 &data
->res
->lr_seq_res
, task
);
5583 rpc_call_start(task
);
5584 dprintk("<-- %s\n", __func__
);
5588 * Called from nfs4_state_manager thread for session setup, so don't recover
5589 * from sequence operation or clientid errors.
5591 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5593 struct nfs4_get_lease_time_data
*data
=
5594 (struct nfs4_get_lease_time_data
*)calldata
;
5596 dprintk("--> %s\n", __func__
);
5597 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5599 switch (task
->tk_status
) {
5600 case -NFS4ERR_DELAY
:
5601 case -NFS4ERR_GRACE
:
5602 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5603 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5604 task
->tk_status
= 0;
5606 case -NFS4ERR_RETRY_UNCACHED_REP
:
5607 rpc_restart_call_prepare(task
);
5610 dprintk("<-- %s\n", __func__
);
5613 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5614 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5615 .rpc_call_done
= nfs4_get_lease_time_done
,
5618 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5620 struct rpc_task
*task
;
5621 struct nfs4_get_lease_time_args args
;
5622 struct nfs4_get_lease_time_res res
= {
5623 .lr_fsinfo
= fsinfo
,
5625 struct nfs4_get_lease_time_data data
= {
5630 struct rpc_message msg
= {
5631 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5635 struct rpc_task_setup task_setup
= {
5636 .rpc_client
= clp
->cl_rpcclient
,
5637 .rpc_message
= &msg
,
5638 .callback_ops
= &nfs4_get_lease_time_ops
,
5639 .callback_data
= &data
,
5640 .flags
= RPC_TASK_TIMEOUT
,
5644 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5645 dprintk("--> %s\n", __func__
);
5646 task
= rpc_run_task(&task_setup
);
5649 status
= PTR_ERR(task
);
5651 status
= task
->tk_status
;
5654 dprintk("<-- %s return %d\n", __func__
, status
);
5659 static struct nfs4_slot
*nfs4_alloc_slots(u32 max_slots
, gfp_t gfp_flags
)
5661 return kcalloc(max_slots
, sizeof(struct nfs4_slot
), gfp_flags
);
5664 static void nfs4_add_and_init_slots(struct nfs4_slot_table
*tbl
,
5665 struct nfs4_slot
*new,
5669 struct nfs4_slot
*old
= NULL
;
5672 spin_lock(&tbl
->slot_tbl_lock
);
5676 tbl
->max_slots
= max_slots
;
5678 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5679 for (i
= 0; i
< tbl
->max_slots
; i
++)
5680 tbl
->slots
[i
].seq_nr
= ivalue
;
5681 spin_unlock(&tbl
->slot_tbl_lock
);
5686 * (re)Initialise a slot table
5688 static int nfs4_realloc_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
5691 struct nfs4_slot
*new = NULL
;
5694 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
5695 max_reqs
, tbl
->max_slots
);
5697 /* Does the newly negotiated max_reqs match the existing slot table? */
5698 if (max_reqs
!= tbl
->max_slots
) {
5699 new = nfs4_alloc_slots(max_reqs
, GFP_NOFS
);
5705 nfs4_add_and_init_slots(tbl
, new, max_reqs
, ivalue
);
5706 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5707 tbl
, tbl
->slots
, tbl
->max_slots
);
5709 dprintk("<-- %s: return %d\n", __func__
, ret
);
5713 /* Destroy the slot table */
5714 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
5716 if (session
->fc_slot_table
.slots
!= NULL
) {
5717 kfree(session
->fc_slot_table
.slots
);
5718 session
->fc_slot_table
.slots
= NULL
;
5720 if (session
->bc_slot_table
.slots
!= NULL
) {
5721 kfree(session
->bc_slot_table
.slots
);
5722 session
->bc_slot_table
.slots
= NULL
;
5728 * Initialize or reset the forechannel and backchannel tables
5730 static int nfs4_setup_session_slot_tables(struct nfs4_session
*ses
)
5732 struct nfs4_slot_table
*tbl
;
5735 dprintk("--> %s\n", __func__
);
5737 tbl
= &ses
->fc_slot_table
;
5738 status
= nfs4_realloc_slot_table(tbl
, ses
->fc_attrs
.max_reqs
, 1);
5739 if (status
) /* -ENOMEM */
5742 tbl
= &ses
->bc_slot_table
;
5743 status
= nfs4_realloc_slot_table(tbl
, ses
->bc_attrs
.max_reqs
, 0);
5744 if (status
&& tbl
->slots
== NULL
)
5745 /* Fore and back channel share a connection so get
5746 * both slot tables or neither */
5747 nfs4_destroy_slot_tables(ses
);
5751 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5753 struct nfs4_session
*session
;
5754 struct nfs4_slot_table
*tbl
;
5756 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5760 tbl
= &session
->fc_slot_table
;
5761 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5762 spin_lock_init(&tbl
->slot_tbl_lock
);
5763 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5764 init_completion(&tbl
->complete
);
5766 tbl
= &session
->bc_slot_table
;
5767 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5768 spin_lock_init(&tbl
->slot_tbl_lock
);
5769 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5770 init_completion(&tbl
->complete
);
5772 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5778 void nfs4_destroy_session(struct nfs4_session
*session
)
5780 struct rpc_xprt
*xprt
;
5781 struct rpc_cred
*cred
;
5783 cred
= nfs4_get_exchange_id_cred(session
->clp
);
5784 nfs4_proc_destroy_session(session
, cred
);
5789 xprt
= rcu_dereference(session
->clp
->cl_rpcclient
->cl_xprt
);
5791 dprintk("%s Destroy backchannel for xprt %p\n",
5793 xprt_destroy_backchannel(xprt
, NFS41_BC_MIN_CALLBACKS
);
5794 nfs4_destroy_slot_tables(session
);
5799 * Initialize the values to be used by the client in CREATE_SESSION
5800 * If nfs4_init_session set the fore channel request and response sizes,
5803 * Set the back channel max_resp_sz_cached to zero to force the client to
5804 * always set csa_cachethis to FALSE because the current implementation
5805 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5807 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5809 struct nfs4_session
*session
= args
->client
->cl_session
;
5810 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5811 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5814 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5816 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5817 /* Fore channel attributes */
5818 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5819 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5820 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5821 args
->fc_attrs
.max_reqs
= max_session_slots
;
5823 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5824 "max_ops=%u max_reqs=%u\n",
5826 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5827 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5829 /* Back channel attributes */
5830 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5831 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5832 args
->bc_attrs
.max_resp_sz_cached
= 0;
5833 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5834 args
->bc_attrs
.max_reqs
= 1;
5836 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5837 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5839 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5840 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5841 args
->bc_attrs
.max_reqs
);
5844 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5846 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5847 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5849 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5852 * Our requested max_ops is the minimum we need; we're not
5853 * prepared to break up compounds into smaller pieces than that.
5854 * So, no point even trying to continue if the server won't
5857 if (rcvd
->max_ops
< sent
->max_ops
)
5859 if (rcvd
->max_reqs
== 0)
5861 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5862 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5866 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5868 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5869 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5871 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5873 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5875 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5877 /* These would render the backchannel useless: */
5878 if (rcvd
->max_ops
!= sent
->max_ops
)
5880 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5885 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5886 struct nfs4_session
*session
)
5890 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5893 return nfs4_verify_back_channel_attrs(args
, session
);
5896 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5897 struct rpc_cred
*cred
)
5899 struct nfs4_session
*session
= clp
->cl_session
;
5900 struct nfs41_create_session_args args
= {
5902 .cb_program
= NFS4_CALLBACK
,
5904 struct nfs41_create_session_res res
= {
5907 struct rpc_message msg
= {
5908 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5915 nfs4_init_channel_attrs(&args
);
5916 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5918 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5921 /* Verify the session's negotiated channel_attrs values */
5922 status
= nfs4_verify_channel_attrs(&args
, session
);
5924 /* Increment the clientid slot sequence id */
5932 * Issues a CREATE_SESSION operation to the server.
5933 * It is the responsibility of the caller to verify the session is
5934 * expired before calling this routine.
5936 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5940 struct nfs4_session
*session
= clp
->cl_session
;
5942 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5944 status
= _nfs4_proc_create_session(clp
, cred
);
5948 /* Init or reset the session slot tables */
5949 status
= nfs4_setup_session_slot_tables(session
);
5950 dprintk("slot table setup returned %d\n", status
);
5954 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5955 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5956 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5958 dprintk("<-- %s\n", __func__
);
5963 * Issue the over-the-wire RPC DESTROY_SESSION.
5964 * The caller must serialize access to this routine.
5966 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5967 struct rpc_cred
*cred
)
5969 struct rpc_message msg
= {
5970 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5971 .rpc_argp
= session
,
5976 dprintk("--> nfs4_proc_destroy_session\n");
5978 /* session is still being setup */
5979 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5982 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5985 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5986 "Session has been destroyed regardless...\n", status
);
5988 dprintk("<-- nfs4_proc_destroy_session\n");
5993 * With sessions, the client is not marked ready until after a
5994 * successful EXCHANGE_ID and CREATE_SESSION.
5996 * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate
5997 * other versions of NFS can be tried.
5999 static int nfs41_check_session_ready(struct nfs_client
*clp
)
6003 if (clp
->cl_cons_state
== NFS_CS_SESSION_INITING
) {
6004 ret
= nfs4_client_recover_expired_lease(clp
);
6008 if (clp
->cl_cons_state
< NFS_CS_READY
)
6009 return -EPROTONOSUPPORT
;
6014 int nfs4_init_session(struct nfs_server
*server
)
6016 struct nfs_client
*clp
= server
->nfs_client
;
6017 struct nfs4_session
*session
;
6018 unsigned int rsize
, wsize
;
6020 if (!nfs4_has_session(clp
))
6023 session
= clp
->cl_session
;
6024 spin_lock(&clp
->cl_lock
);
6025 if (test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
)) {
6027 rsize
= server
->rsize
;
6029 rsize
= NFS_MAX_FILE_IO_SIZE
;
6030 wsize
= server
->wsize
;
6032 wsize
= NFS_MAX_FILE_IO_SIZE
;
6034 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
6035 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
6037 spin_unlock(&clp
->cl_lock
);
6039 return nfs41_check_session_ready(clp
);
6042 int nfs4_init_ds_session(struct nfs_client
*clp
, unsigned long lease_time
)
6044 struct nfs4_session
*session
= clp
->cl_session
;
6047 spin_lock(&clp
->cl_lock
);
6048 if (test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
)) {
6050 * Do not set NFS_CS_CHECK_LEASE_TIME instead set the
6051 * DS lease to be equal to the MDS lease.
6053 clp
->cl_lease_time
= lease_time
;
6054 clp
->cl_last_renewal
= jiffies
;
6056 spin_unlock(&clp
->cl_lock
);
6058 ret
= nfs41_check_session_ready(clp
);
6061 /* Test for the DS role */
6062 if (!is_ds_client(clp
))
6066 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
6070 * Renew the cl_session lease.
6072 struct nfs4_sequence_data
{
6073 struct nfs_client
*clp
;
6074 struct nfs4_sequence_args args
;
6075 struct nfs4_sequence_res res
;
6078 static void nfs41_sequence_release(void *data
)
6080 struct nfs4_sequence_data
*calldata
= data
;
6081 struct nfs_client
*clp
= calldata
->clp
;
6083 if (atomic_read(&clp
->cl_count
) > 1)
6084 nfs4_schedule_state_renewal(clp
);
6085 nfs_put_client(clp
);
6089 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6091 switch(task
->tk_status
) {
6092 case -NFS4ERR_DELAY
:
6093 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6096 nfs4_schedule_lease_recovery(clp
);
6101 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
6103 struct nfs4_sequence_data
*calldata
= data
;
6104 struct nfs_client
*clp
= calldata
->clp
;
6106 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
6109 if (task
->tk_status
< 0) {
6110 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
6111 if (atomic_read(&clp
->cl_count
) == 1)
6114 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
6115 rpc_restart_call_prepare(task
);
6119 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
6121 dprintk("<-- %s\n", __func__
);
6124 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6126 struct nfs4_sequence_data
*calldata
= data
;
6127 struct nfs_client
*clp
= calldata
->clp
;
6128 struct nfs4_sequence_args
*args
;
6129 struct nfs4_sequence_res
*res
;
6131 args
= task
->tk_msg
.rpc_argp
;
6132 res
= task
->tk_msg
.rpc_resp
;
6134 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
))
6136 rpc_call_start(task
);
6139 static void nfs41_sequence_prepare_privileged(struct rpc_task
*task
, void *data
)
6141 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
6142 nfs41_sequence_prepare(task
, data
);
6145 static const struct rpc_call_ops nfs41_sequence_ops
= {
6146 .rpc_call_done
= nfs41_sequence_call_done
,
6147 .rpc_call_prepare
= nfs41_sequence_prepare
,
6148 .rpc_release
= nfs41_sequence_release
,
6151 static const struct rpc_call_ops nfs41_sequence_privileged_ops
= {
6152 .rpc_call_done
= nfs41_sequence_call_done
,
6153 .rpc_call_prepare
= nfs41_sequence_prepare_privileged
,
6154 .rpc_release
= nfs41_sequence_release
,
6157 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6158 const struct rpc_call_ops
*seq_ops
)
6160 struct nfs4_sequence_data
*calldata
;
6161 struct rpc_message msg
= {
6162 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6165 struct rpc_task_setup task_setup_data
= {
6166 .rpc_client
= clp
->cl_rpcclient
,
6167 .rpc_message
= &msg
,
6168 .callback_ops
= seq_ops
,
6169 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
6172 if (!atomic_inc_not_zero(&clp
->cl_count
))
6173 return ERR_PTR(-EIO
);
6174 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6175 if (calldata
== NULL
) {
6176 nfs_put_client(clp
);
6177 return ERR_PTR(-ENOMEM
);
6179 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6180 msg
.rpc_argp
= &calldata
->args
;
6181 msg
.rpc_resp
= &calldata
->res
;
6182 calldata
->clp
= clp
;
6183 task_setup_data
.callback_data
= calldata
;
6185 return rpc_run_task(&task_setup_data
);
6188 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6190 struct rpc_task
*task
;
6193 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6195 task
= _nfs41_proc_sequence(clp
, cred
, &nfs41_sequence_ops
);
6197 ret
= PTR_ERR(task
);
6199 rpc_put_task_async(task
);
6200 dprintk("<-- %s status=%d\n", __func__
, ret
);
6204 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6206 struct rpc_task
*task
;
6209 task
= _nfs41_proc_sequence(clp
, cred
, &nfs41_sequence_privileged_ops
);
6211 ret
= PTR_ERR(task
);
6214 ret
= rpc_wait_for_completion_task(task
);
6216 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6218 if (task
->tk_status
== 0)
6219 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6220 ret
= task
->tk_status
;
6224 dprintk("<-- %s status=%d\n", __func__
, ret
);
6228 struct nfs4_reclaim_complete_data
{
6229 struct nfs_client
*clp
;
6230 struct nfs41_reclaim_complete_args arg
;
6231 struct nfs41_reclaim_complete_res res
;
6234 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6236 struct nfs4_reclaim_complete_data
*calldata
= data
;
6238 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
6239 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
6240 &calldata
->arg
.seq_args
,
6241 &calldata
->res
.seq_res
, task
))
6244 rpc_call_start(task
);
6247 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6249 switch(task
->tk_status
) {
6251 case -NFS4ERR_COMPLETE_ALREADY
:
6252 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6254 case -NFS4ERR_DELAY
:
6255 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6257 case -NFS4ERR_RETRY_UNCACHED_REP
:
6260 nfs4_schedule_lease_recovery(clp
);
6265 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6267 struct nfs4_reclaim_complete_data
*calldata
= data
;
6268 struct nfs_client
*clp
= calldata
->clp
;
6269 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6271 dprintk("--> %s\n", __func__
);
6272 if (!nfs41_sequence_done(task
, res
))
6275 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6276 rpc_restart_call_prepare(task
);
6279 dprintk("<-- %s\n", __func__
);
6282 static void nfs4_free_reclaim_complete_data(void *data
)
6284 struct nfs4_reclaim_complete_data
*calldata
= data
;
6289 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6290 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6291 .rpc_call_done
= nfs4_reclaim_complete_done
,
6292 .rpc_release
= nfs4_free_reclaim_complete_data
,
6296 * Issue a global reclaim complete.
6298 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6300 struct nfs4_reclaim_complete_data
*calldata
;
6301 struct rpc_task
*task
;
6302 struct rpc_message msg
= {
6303 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6305 struct rpc_task_setup task_setup_data
= {
6306 .rpc_client
= clp
->cl_rpcclient
,
6307 .rpc_message
= &msg
,
6308 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6309 .flags
= RPC_TASK_ASYNC
,
6311 int status
= -ENOMEM
;
6313 dprintk("--> %s\n", __func__
);
6314 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6315 if (calldata
== NULL
)
6317 calldata
->clp
= clp
;
6318 calldata
->arg
.one_fs
= 0;
6320 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6321 msg
.rpc_argp
= &calldata
->arg
;
6322 msg
.rpc_resp
= &calldata
->res
;
6323 task_setup_data
.callback_data
= calldata
;
6324 task
= rpc_run_task(&task_setup_data
);
6326 status
= PTR_ERR(task
);
6329 status
= nfs4_wait_for_completion_rpc_task(task
);
6331 status
= task
->tk_status
;
6335 dprintk("<-- %s status=%d\n", __func__
, status
);
6340 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6342 struct nfs4_layoutget
*lgp
= calldata
;
6343 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6345 dprintk("--> %s\n", __func__
);
6346 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6347 * right now covering the LAYOUTGET we are about to send.
6348 * However, that is not so catastrophic, and there seems
6349 * to be no way to prevent it completely.
6351 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
6352 &lgp
->res
.seq_res
, task
))
6354 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6355 NFS_I(lgp
->args
.inode
)->layout
,
6356 lgp
->args
.ctx
->state
)) {
6357 rpc_exit(task
, NFS4_OK
);
6360 rpc_call_start(task
);
6363 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6365 struct nfs4_layoutget
*lgp
= calldata
;
6366 struct inode
*inode
= lgp
->args
.inode
;
6367 struct nfs_server
*server
= NFS_SERVER(inode
);
6368 struct pnfs_layout_hdr
*lo
;
6369 struct nfs4_state
*state
= NULL
;
6371 dprintk("--> %s\n", __func__
);
6373 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
6376 switch (task
->tk_status
) {
6379 case -NFS4ERR_LAYOUTTRYLATER
:
6380 case -NFS4ERR_RECALLCONFLICT
:
6381 task
->tk_status
= -NFS4ERR_DELAY
;
6383 case -NFS4ERR_EXPIRED
:
6384 case -NFS4ERR_BAD_STATEID
:
6385 spin_lock(&inode
->i_lock
);
6386 lo
= NFS_I(inode
)->layout
;
6387 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6388 spin_unlock(&inode
->i_lock
);
6389 /* If the open stateid was bad, then recover it. */
6390 state
= lgp
->args
.ctx
->state
;
6394 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6395 spin_unlock(&inode
->i_lock
);
6396 /* Mark the bad layout state as invalid, then
6397 * retry using the open stateid. */
6398 pnfs_free_lseg_list(&head
);
6401 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6402 rpc_restart_call_prepare(task
);
6404 dprintk("<-- %s\n", __func__
);
6407 static size_t max_response_pages(struct nfs_server
*server
)
6409 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6410 return nfs_page_array_len(0, max_resp_sz
);
6413 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6420 for (i
= 0; i
< size
; i
++) {
6423 __free_page(pages
[i
]);
6428 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6430 struct page
**pages
;
6433 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6435 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6439 for (i
= 0; i
< size
; i
++) {
6440 pages
[i
] = alloc_page(gfp_flags
);
6442 dprintk("%s: failed to allocate page\n", __func__
);
6443 nfs4_free_pages(pages
, size
);
6451 static void nfs4_layoutget_release(void *calldata
)
6453 struct nfs4_layoutget
*lgp
= calldata
;
6454 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6455 size_t max_pages
= max_response_pages(server
);
6457 dprintk("--> %s\n", __func__
);
6458 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6459 put_nfs_open_context(lgp
->args
.ctx
);
6461 dprintk("<-- %s\n", __func__
);
6464 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6465 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6466 .rpc_call_done
= nfs4_layoutget_done
,
6467 .rpc_release
= nfs4_layoutget_release
,
6470 struct pnfs_layout_segment
*
6471 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6473 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6474 size_t max_pages
= max_response_pages(server
);
6475 struct rpc_task
*task
;
6476 struct rpc_message msg
= {
6477 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6478 .rpc_argp
= &lgp
->args
,
6479 .rpc_resp
= &lgp
->res
,
6481 struct rpc_task_setup task_setup_data
= {
6482 .rpc_client
= server
->client
,
6483 .rpc_message
= &msg
,
6484 .callback_ops
= &nfs4_layoutget_call_ops
,
6485 .callback_data
= lgp
,
6486 .flags
= RPC_TASK_ASYNC
,
6488 struct pnfs_layout_segment
*lseg
= NULL
;
6491 dprintk("--> %s\n", __func__
);
6493 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6494 if (!lgp
->args
.layout
.pages
) {
6495 nfs4_layoutget_release(lgp
);
6496 return ERR_PTR(-ENOMEM
);
6498 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6500 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6501 lgp
->res
.seq_res
.sr_slot
= NULL
;
6502 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6503 task
= rpc_run_task(&task_setup_data
);
6505 return ERR_CAST(task
);
6506 status
= nfs4_wait_for_completion_rpc_task(task
);
6508 status
= task
->tk_status
;
6510 lseg
= pnfs_layout_process(lgp
);
6512 dprintk("<-- %s status=%d\n", __func__
, status
);
6514 return ERR_PTR(status
);
6519 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6521 struct nfs4_layoutreturn
*lrp
= calldata
;
6523 dprintk("--> %s\n", __func__
);
6524 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
6525 &lrp
->res
.seq_res
, task
))
6527 rpc_call_start(task
);
6530 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6532 struct nfs4_layoutreturn
*lrp
= calldata
;
6533 struct nfs_server
*server
;
6535 dprintk("--> %s\n", __func__
);
6537 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
6540 server
= NFS_SERVER(lrp
->args
.inode
);
6541 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6542 rpc_restart_call_prepare(task
);
6545 dprintk("<-- %s\n", __func__
);
6548 static void nfs4_layoutreturn_release(void *calldata
)
6550 struct nfs4_layoutreturn
*lrp
= calldata
;
6551 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6553 dprintk("--> %s\n", __func__
);
6554 spin_lock(&lo
->plh_inode
->i_lock
);
6555 if (lrp
->res
.lrs_present
)
6556 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6557 lo
->plh_block_lgets
--;
6558 spin_unlock(&lo
->plh_inode
->i_lock
);
6559 pnfs_put_layout_hdr(lrp
->args
.layout
);
6561 dprintk("<-- %s\n", __func__
);
6564 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6565 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6566 .rpc_call_done
= nfs4_layoutreturn_done
,
6567 .rpc_release
= nfs4_layoutreturn_release
,
6570 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6572 struct rpc_task
*task
;
6573 struct rpc_message msg
= {
6574 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6575 .rpc_argp
= &lrp
->args
,
6576 .rpc_resp
= &lrp
->res
,
6578 struct rpc_task_setup task_setup_data
= {
6579 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6580 .rpc_message
= &msg
,
6581 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6582 .callback_data
= lrp
,
6586 dprintk("--> %s\n", __func__
);
6587 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6588 task
= rpc_run_task(&task_setup_data
);
6590 return PTR_ERR(task
);
6591 status
= task
->tk_status
;
6592 dprintk("<-- %s status=%d\n", __func__
, status
);
6598 * Retrieve the list of Data Server devices from the MDS.
6600 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6601 const struct nfs_fh
*fh
,
6602 struct pnfs_devicelist
*devlist
)
6604 struct nfs4_getdevicelist_args args
= {
6606 .layoutclass
= server
->pnfs_curr_ld
->id
,
6608 struct nfs4_getdevicelist_res res
= {
6611 struct rpc_message msg
= {
6612 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6618 dprintk("--> %s\n", __func__
);
6619 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6621 dprintk("<-- %s status=%d\n", __func__
, status
);
6625 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6626 const struct nfs_fh
*fh
,
6627 struct pnfs_devicelist
*devlist
)
6629 struct nfs4_exception exception
= { };
6633 err
= nfs4_handle_exception(server
,
6634 _nfs4_getdevicelist(server
, fh
, devlist
),
6636 } while (exception
.retry
);
6638 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6639 err
, devlist
->num_devs
);
6643 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6646 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6648 struct nfs4_getdeviceinfo_args args
= {
6651 struct nfs4_getdeviceinfo_res res
= {
6654 struct rpc_message msg
= {
6655 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6661 dprintk("--> %s\n", __func__
);
6662 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6663 dprintk("<-- %s status=%d\n", __func__
, status
);
6668 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6670 struct nfs4_exception exception
= { };
6674 err
= nfs4_handle_exception(server
,
6675 _nfs4_proc_getdeviceinfo(server
, pdev
),
6677 } while (exception
.retry
);
6680 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6682 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6684 struct nfs4_layoutcommit_data
*data
= calldata
;
6685 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6687 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
6688 &data
->res
.seq_res
, task
))
6690 rpc_call_start(task
);
6694 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6696 struct nfs4_layoutcommit_data
*data
= calldata
;
6697 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6699 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6702 switch (task
->tk_status
) { /* Just ignore these failures */
6703 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6704 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6705 case -NFS4ERR_BADLAYOUT
: /* no layout */
6706 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6707 task
->tk_status
= 0;
6710 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6714 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6715 rpc_restart_call_prepare(task
);
6721 static void nfs4_layoutcommit_release(void *calldata
)
6723 struct nfs4_layoutcommit_data
*data
= calldata
;
6724 struct pnfs_layout_segment
*lseg
, *tmp
;
6725 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
6727 pnfs_cleanup_layoutcommit(data
);
6728 /* Matched by references in pnfs_set_layoutcommit */
6729 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
6730 list_del_init(&lseg
->pls_lc_list
);
6731 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
6733 pnfs_put_lseg(lseg
);
6736 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
6737 smp_mb__after_clear_bit();
6738 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
6740 put_rpccred(data
->cred
);
6744 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6745 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6746 .rpc_call_done
= nfs4_layoutcommit_done
,
6747 .rpc_release
= nfs4_layoutcommit_release
,
6751 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6753 struct rpc_message msg
= {
6754 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6755 .rpc_argp
= &data
->args
,
6756 .rpc_resp
= &data
->res
,
6757 .rpc_cred
= data
->cred
,
6759 struct rpc_task_setup task_setup_data
= {
6760 .task
= &data
->task
,
6761 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6762 .rpc_message
= &msg
,
6763 .callback_ops
= &nfs4_layoutcommit_ops
,
6764 .callback_data
= data
,
6765 .flags
= RPC_TASK_ASYNC
,
6767 struct rpc_task
*task
;
6770 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6771 "lbw: %llu inode %lu\n",
6772 data
->task
.tk_pid
, sync
,
6773 data
->args
.lastbytewritten
,
6774 data
->args
.inode
->i_ino
);
6776 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6777 task
= rpc_run_task(&task_setup_data
);
6779 return PTR_ERR(task
);
6782 status
= nfs4_wait_for_completion_rpc_task(task
);
6785 status
= task
->tk_status
;
6787 dprintk("%s: status %d\n", __func__
, status
);
6793 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6794 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6796 struct nfs41_secinfo_no_name_args args
= {
6797 .style
= SECINFO_STYLE_CURRENT_FH
,
6799 struct nfs4_secinfo_res res
= {
6802 struct rpc_message msg
= {
6803 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6807 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6811 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6812 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6814 struct nfs4_exception exception
= { };
6817 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6820 case -NFS4ERR_WRONGSEC
:
6821 case -NFS4ERR_NOTSUPP
:
6824 err
= nfs4_handle_exception(server
, err
, &exception
);
6826 } while (exception
.retry
);
6832 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6833 struct nfs_fsinfo
*info
)
6837 rpc_authflavor_t flavor
;
6838 struct nfs4_secinfo_flavors
*flavors
;
6840 page
= alloc_page(GFP_KERNEL
);
6846 flavors
= page_address(page
);
6847 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6850 * Fall back on "guess and check" method if
6851 * the server doesn't support SECINFO_NO_NAME
6853 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6854 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6860 flavor
= nfs_find_best_sec(flavors
);
6862 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6872 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6875 struct nfs41_test_stateid_args args
= {
6878 struct nfs41_test_stateid_res res
;
6879 struct rpc_message msg
= {
6880 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6885 dprintk("NFS call test_stateid %p\n", stateid
);
6886 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6887 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6888 if (status
!= NFS_OK
) {
6889 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6892 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6897 * nfs41_test_stateid - perform a TEST_STATEID operation
6899 * @server: server / transport on which to perform the operation
6900 * @stateid: state ID to test
6902 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6903 * Otherwise a negative NFS4ERR value is returned if the operation
6904 * failed or the state ID is not currently valid.
6906 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6908 struct nfs4_exception exception
= { };
6911 err
= _nfs41_test_stateid(server
, stateid
);
6912 if (err
!= -NFS4ERR_DELAY
)
6914 nfs4_handle_exception(server
, err
, &exception
);
6915 } while (exception
.retry
);
6919 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6921 struct nfs41_free_stateid_args args
= {
6924 struct nfs41_free_stateid_res res
;
6925 struct rpc_message msg
= {
6926 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6932 dprintk("NFS call free_stateid %p\n", stateid
);
6933 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6934 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6935 &args
.seq_args
, &res
.seq_res
, 1);
6936 dprintk("NFS reply free_stateid: %d\n", status
);
6941 * nfs41_free_stateid - perform a FREE_STATEID operation
6943 * @server: server / transport on which to perform the operation
6944 * @stateid: state ID to release
6946 * Returns NFS_OK if the server freed "stateid". Otherwise a
6947 * negative NFS4ERR value is returned.
6949 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6951 struct nfs4_exception exception
= { };
6954 err
= _nfs4_free_stateid(server
, stateid
);
6955 if (err
!= -NFS4ERR_DELAY
)
6957 nfs4_handle_exception(server
, err
, &exception
);
6958 } while (exception
.retry
);
6962 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6963 const nfs4_stateid
*s2
)
6965 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6968 if (s1
->seqid
== s2
->seqid
)
6970 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6976 #endif /* CONFIG_NFS_V4_1 */
6978 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6979 const nfs4_stateid
*s2
)
6981 return nfs4_stateid_match(s1
, s2
);
6985 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6986 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6987 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6988 .recover_open
= nfs4_open_reclaim
,
6989 .recover_lock
= nfs4_lock_reclaim
,
6990 .establish_clid
= nfs4_init_clientid
,
6991 .get_clid_cred
= nfs4_get_setclientid_cred
,
6992 .detect_trunking
= nfs40_discover_server_trunking
,
6995 #if defined(CONFIG_NFS_V4_1)
6996 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6997 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6998 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6999 .recover_open
= nfs4_open_reclaim
,
7000 .recover_lock
= nfs4_lock_reclaim
,
7001 .establish_clid
= nfs41_init_clientid
,
7002 .get_clid_cred
= nfs4_get_exchange_id_cred
,
7003 .reclaim_complete
= nfs41_proc_reclaim_complete
,
7004 .detect_trunking
= nfs41_discover_server_trunking
,
7006 #endif /* CONFIG_NFS_V4_1 */
7008 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
7009 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7010 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7011 .recover_open
= nfs4_open_expired
,
7012 .recover_lock
= nfs4_lock_expired
,
7013 .establish_clid
= nfs4_init_clientid
,
7014 .get_clid_cred
= nfs4_get_setclientid_cred
,
7017 #if defined(CONFIG_NFS_V4_1)
7018 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
7019 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7020 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7021 .recover_open
= nfs41_open_expired
,
7022 .recover_lock
= nfs41_lock_expired
,
7023 .establish_clid
= nfs41_init_clientid
,
7024 .get_clid_cred
= nfs4_get_exchange_id_cred
,
7026 #endif /* CONFIG_NFS_V4_1 */
7028 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
7029 .sched_state_renewal
= nfs4_proc_async_renew
,
7030 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
7031 .renew_lease
= nfs4_proc_renew
,
7034 #if defined(CONFIG_NFS_V4_1)
7035 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
7036 .sched_state_renewal
= nfs41_proc_async_sequence
,
7037 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
7038 .renew_lease
= nfs4_proc_sequence
,
7042 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
7044 .call_sync
= _nfs4_call_sync
,
7045 .match_stateid
= nfs4_match_stateid
,
7046 .find_root_sec
= nfs4_find_root_sec
,
7047 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
7048 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
7049 .state_renewal_ops
= &nfs40_state_renewal_ops
,
7052 #if defined(CONFIG_NFS_V4_1)
7053 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
7055 .call_sync
= _nfs4_call_sync_session
,
7056 .match_stateid
= nfs41_match_stateid
,
7057 .find_root_sec
= nfs41_find_root_sec
,
7058 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7059 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7060 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7064 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
7065 [0] = &nfs_v4_0_minor_ops
,
7066 #if defined(CONFIG_NFS_V4_1)
7067 [1] = &nfs_v4_1_minor_ops
,
7071 const struct inode_operations nfs4_dir_inode_operations
= {
7072 .create
= nfs_create
,
7073 .lookup
= nfs_lookup
,
7074 .atomic_open
= nfs_atomic_open
,
7076 .unlink
= nfs_unlink
,
7077 .symlink
= nfs_symlink
,
7081 .rename
= nfs_rename
,
7082 .permission
= nfs_permission
,
7083 .getattr
= nfs_getattr
,
7084 .setattr
= nfs_setattr
,
7085 .getxattr
= generic_getxattr
,
7086 .setxattr
= generic_setxattr
,
7087 .listxattr
= generic_listxattr
,
7088 .removexattr
= generic_removexattr
,
7091 static const struct inode_operations nfs4_file_inode_operations
= {
7092 .permission
= nfs_permission
,
7093 .getattr
= nfs_getattr
,
7094 .setattr
= nfs_setattr
,
7095 .getxattr
= generic_getxattr
,
7096 .setxattr
= generic_setxattr
,
7097 .listxattr
= generic_listxattr
,
7098 .removexattr
= generic_removexattr
,
7101 const struct nfs_rpc_ops nfs_v4_clientops
= {
7102 .version
= 4, /* protocol version */
7103 .dentry_ops
= &nfs4_dentry_operations
,
7104 .dir_inode_ops
= &nfs4_dir_inode_operations
,
7105 .file_inode_ops
= &nfs4_file_inode_operations
,
7106 .file_ops
= &nfs4_file_operations
,
7107 .getroot
= nfs4_proc_get_root
,
7108 .submount
= nfs4_submount
,
7109 .try_mount
= nfs4_try_mount
,
7110 .getattr
= nfs4_proc_getattr
,
7111 .setattr
= nfs4_proc_setattr
,
7112 .lookup
= nfs4_proc_lookup
,
7113 .access
= nfs4_proc_access
,
7114 .readlink
= nfs4_proc_readlink
,
7115 .create
= nfs4_proc_create
,
7116 .remove
= nfs4_proc_remove
,
7117 .unlink_setup
= nfs4_proc_unlink_setup
,
7118 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
7119 .unlink_done
= nfs4_proc_unlink_done
,
7120 .rename
= nfs4_proc_rename
,
7121 .rename_setup
= nfs4_proc_rename_setup
,
7122 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
7123 .rename_done
= nfs4_proc_rename_done
,
7124 .link
= nfs4_proc_link
,
7125 .symlink
= nfs4_proc_symlink
,
7126 .mkdir
= nfs4_proc_mkdir
,
7127 .rmdir
= nfs4_proc_remove
,
7128 .readdir
= nfs4_proc_readdir
,
7129 .mknod
= nfs4_proc_mknod
,
7130 .statfs
= nfs4_proc_statfs
,
7131 .fsinfo
= nfs4_proc_fsinfo
,
7132 .pathconf
= nfs4_proc_pathconf
,
7133 .set_capabilities
= nfs4_server_capabilities
,
7134 .decode_dirent
= nfs4_decode_dirent
,
7135 .read_setup
= nfs4_proc_read_setup
,
7136 .read_pageio_init
= pnfs_pageio_init_read
,
7137 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
7138 .read_done
= nfs4_read_done
,
7139 .write_setup
= nfs4_proc_write_setup
,
7140 .write_pageio_init
= pnfs_pageio_init_write
,
7141 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
7142 .write_done
= nfs4_write_done
,
7143 .commit_setup
= nfs4_proc_commit_setup
,
7144 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
7145 .commit_done
= nfs4_commit_done
,
7146 .lock
= nfs4_proc_lock
,
7147 .clear_acl_cache
= nfs4_zap_acl_attr
,
7148 .close_context
= nfs4_close_context
,
7149 .open_context
= nfs4_atomic_open
,
7150 .have_delegation
= nfs4_have_delegation
,
7151 .return_delegation
= nfs4_inode_return_delegation
,
7152 .alloc_client
= nfs4_alloc_client
,
7153 .init_client
= nfs4_init_client
,
7154 .free_client
= nfs4_free_client
,
7155 .create_server
= nfs4_create_server
,
7156 .clone_server
= nfs_clone_server
,
7159 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7160 .prefix
= XATTR_NAME_NFSV4_ACL
,
7161 .list
= nfs4_xattr_list_nfs4_acl
,
7162 .get
= nfs4_xattr_get_nfs4_acl
,
7163 .set
= nfs4_xattr_set_nfs4_acl
,
7166 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7167 &nfs4_xattr_nfs4_acl_handler
,