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_session
*session
;
471 struct nfs4_slot_table
*tbl
;
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__
);
479 tbl
= res
->sr_slot
->table
;
480 session
= tbl
->session
;
482 spin_lock(&tbl
->slot_tbl_lock
);
483 nfs4_free_slot(tbl
, res
->sr_slot
- tbl
->slots
);
484 nfs4_check_drain_fc_complete(session
);
485 spin_unlock(&tbl
->slot_tbl_lock
);
489 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
491 struct nfs4_session
*session
;
492 struct nfs4_slot
*slot
;
493 unsigned long timestamp
;
494 struct nfs_client
*clp
;
497 * sr_status remains 1 if an RPC level error occurred. The server
498 * may or may not have processed the sequence operation..
499 * Proceed as if the server received and processed the sequence
502 if (res
->sr_status
== 1)
503 res
->sr_status
= NFS_OK
;
505 /* don't increment the sequence number if the task wasn't sent */
506 if (!RPC_WAS_SENT(task
))
510 session
= slot
->table
->session
;
512 /* Check the SEQUENCE operation status */
513 switch (res
->sr_status
) {
515 /* Update the slot's sequence and clientid lease timer */
517 timestamp
= slot
->renewal_time
;
519 do_renew_lease(clp
, timestamp
);
520 /* Check sequence flags */
521 if (res
->sr_status_flags
!= 0)
522 nfs4_schedule_lease_recovery(clp
);
525 /* The server detected a resend of the RPC call and
526 * returned NFS4ERR_DELAY as per Section 2.10.6.2
529 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
531 slot
- session
->fc_slot_table
.slots
,
535 /* Just update the slot sequence no. */
539 /* The session may be reset by one of the error handlers. */
540 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
541 nfs41_sequence_free_slot(res
);
544 if (!rpc_restart_call(task
))
546 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
550 static int nfs4_sequence_done(struct rpc_task
*task
,
551 struct nfs4_sequence_res
*res
)
553 if (res
->sr_slot
== NULL
)
555 return nfs41_sequence_done(task
, res
);
559 * nfs4_find_slot - efficiently look for a free slot
561 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
562 * If found, we mark the slot as used, update the highest_used_slotid,
563 * and respectively set up the sequence operation args.
564 * The slot number is returned if found, or NFS4_NO_SLOT otherwise.
566 * Note: must be called with under the slot_tbl_lock.
569 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
572 u32 ret_id
= NFS4_NO_SLOT
;
574 dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n",
575 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
577 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
578 if (slotid
>= tbl
->max_slots
)
580 __set_bit(slotid
, tbl
->used_slots
);
581 if (slotid
> tbl
->highest_used_slotid
||
582 tbl
->highest_used_slotid
== NFS4_NO_SLOT
)
583 tbl
->highest_used_slotid
= slotid
;
586 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
587 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
591 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
592 struct nfs4_sequence_res
*res
, int cache_reply
)
594 args
->sa_session
= NULL
;
595 args
->sa_cache_this
= 0;
597 args
->sa_cache_this
= 1;
601 int nfs41_setup_sequence(struct nfs4_session
*session
,
602 struct nfs4_sequence_args
*args
,
603 struct nfs4_sequence_res
*res
,
604 struct rpc_task
*task
)
606 struct nfs4_slot
*slot
;
607 struct nfs4_slot_table
*tbl
;
610 dprintk("--> %s\n", __func__
);
611 /* slot already allocated? */
612 if (res
->sr_slot
!= NULL
)
615 tbl
= &session
->fc_slot_table
;
617 spin_lock(&tbl
->slot_tbl_lock
);
618 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
619 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
620 /* The state manager will wait until the slot table is empty */
621 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
622 spin_unlock(&tbl
->slot_tbl_lock
);
623 dprintk("%s session is draining\n", __func__
);
627 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
628 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
629 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
630 spin_unlock(&tbl
->slot_tbl_lock
);
631 dprintk("%s enforce FIFO order\n", __func__
);
635 slotid
= nfs4_find_slot(tbl
);
636 if (slotid
== NFS4_NO_SLOT
) {
637 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
638 spin_unlock(&tbl
->slot_tbl_lock
);
639 dprintk("<-- %s: no free slots\n", __func__
);
642 spin_unlock(&tbl
->slot_tbl_lock
);
644 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
645 slot
= tbl
->slots
+ slotid
;
646 slot
->renewal_time
= jiffies
;
647 args
->sa_session
= session
;
648 args
->sa_slotid
= slotid
;
650 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
653 res
->sr_status_flags
= 0;
655 * sr_status is only set in decode_sequence, and so will remain
656 * set to 1 if an rpc level failure occurs.
661 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
663 int nfs4_setup_sequence(const struct nfs_server
*server
,
664 struct nfs4_sequence_args
*args
,
665 struct nfs4_sequence_res
*res
,
666 struct rpc_task
*task
)
668 struct nfs4_session
*session
= nfs4_get_session(server
);
674 dprintk("--> %s clp %p session %p sr_slot %td\n",
675 __func__
, session
->clp
, session
, res
->sr_slot
?
676 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
678 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
680 dprintk("<-- %s status=%d\n", __func__
, ret
);
684 struct nfs41_call_sync_data
{
685 const struct nfs_server
*seq_server
;
686 struct nfs4_sequence_args
*seq_args
;
687 struct nfs4_sequence_res
*seq_res
;
690 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
692 struct nfs41_call_sync_data
*data
= calldata
;
694 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
696 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
697 data
->seq_res
, task
))
699 rpc_call_start(task
);
702 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
704 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
705 nfs41_call_sync_prepare(task
, calldata
);
708 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
710 struct nfs41_call_sync_data
*data
= calldata
;
712 nfs41_sequence_done(task
, data
->seq_res
);
715 static const struct rpc_call_ops nfs41_call_sync_ops
= {
716 .rpc_call_prepare
= nfs41_call_sync_prepare
,
717 .rpc_call_done
= nfs41_call_sync_done
,
720 static const struct rpc_call_ops nfs41_call_priv_sync_ops
= {
721 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
722 .rpc_call_done
= nfs41_call_sync_done
,
725 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
726 struct nfs_server
*server
,
727 struct rpc_message
*msg
,
728 struct nfs4_sequence_args
*args
,
729 struct nfs4_sequence_res
*res
,
733 struct rpc_task
*task
;
734 struct nfs41_call_sync_data data
= {
735 .seq_server
= server
,
739 struct rpc_task_setup task_setup
= {
742 .callback_ops
= &nfs41_call_sync_ops
,
743 .callback_data
= &data
747 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
748 task
= rpc_run_task(&task_setup
);
752 ret
= task
->tk_status
;
758 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
759 struct nfs_server
*server
,
760 struct rpc_message
*msg
,
761 struct nfs4_sequence_args
*args
,
762 struct nfs4_sequence_res
*res
,
765 nfs41_init_sequence(args
, res
, cache_reply
);
766 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, 0);
771 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
772 struct nfs4_sequence_res
*res
, int cache_reply
)
776 static int nfs4_sequence_done(struct rpc_task
*task
,
777 struct nfs4_sequence_res
*res
)
781 #endif /* CONFIG_NFS_V4_1 */
783 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
784 struct nfs_server
*server
,
785 struct rpc_message
*msg
,
786 struct nfs4_sequence_args
*args
,
787 struct nfs4_sequence_res
*res
,
790 nfs41_init_sequence(args
, res
, cache_reply
);
791 return rpc_call_sync(clnt
, msg
, 0);
795 int nfs4_call_sync(struct rpc_clnt
*clnt
,
796 struct nfs_server
*server
,
797 struct rpc_message
*msg
,
798 struct nfs4_sequence_args
*args
,
799 struct nfs4_sequence_res
*res
,
802 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
803 args
, res
, cache_reply
);
806 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
808 struct nfs_inode
*nfsi
= NFS_I(dir
);
810 spin_lock(&dir
->i_lock
);
811 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
812 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
813 nfs_force_lookup_revalidate(dir
);
814 dir
->i_version
= cinfo
->after
;
815 spin_unlock(&dir
->i_lock
);
818 struct nfs4_opendata
{
820 struct nfs_openargs o_arg
;
821 struct nfs_openres o_res
;
822 struct nfs_open_confirmargs c_arg
;
823 struct nfs_open_confirmres c_res
;
824 struct nfs4_string owner_name
;
825 struct nfs4_string group_name
;
826 struct nfs_fattr f_attr
;
828 struct dentry
*dentry
;
829 struct nfs4_state_owner
*owner
;
830 struct nfs4_state
*state
;
832 unsigned long timestamp
;
833 unsigned int rpc_done
: 1;
839 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
841 p
->o_res
.f_attr
= &p
->f_attr
;
842 p
->o_res
.seqid
= p
->o_arg
.seqid
;
843 p
->c_res
.seqid
= p
->c_arg
.seqid
;
844 p
->o_res
.server
= p
->o_arg
.server
;
845 p
->o_res
.access_request
= p
->o_arg
.access
;
846 nfs_fattr_init(&p
->f_attr
);
847 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
850 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
851 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
852 const struct iattr
*attrs
,
855 struct dentry
*parent
= dget_parent(dentry
);
856 struct inode
*dir
= parent
->d_inode
;
857 struct nfs_server
*server
= NFS_SERVER(dir
);
858 struct nfs4_opendata
*p
;
860 p
= kzalloc(sizeof(*p
), gfp_mask
);
863 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
864 if (p
->o_arg
.seqid
== NULL
)
866 nfs_sb_active(dentry
->d_sb
);
867 p
->dentry
= dget(dentry
);
870 atomic_inc(&sp
->so_count
);
871 p
->o_arg
.fh
= NFS_FH(dir
);
872 p
->o_arg
.open_flags
= flags
;
873 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
874 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
875 * will return permission denied for all bits until close */
876 if (!(flags
& O_EXCL
)) {
877 /* ask server to check for all possible rights as results
879 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
880 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
882 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
883 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
884 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
885 p
->o_arg
.name
= &dentry
->d_name
;
886 p
->o_arg
.server
= server
;
887 p
->o_arg
.bitmask
= server
->attr_bitmask
;
888 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
889 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
890 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
893 p
->o_arg
.u
.attrs
= &p
->attrs
;
894 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
897 verf
[1] = current
->pid
;
898 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
899 sizeof(p
->o_arg
.u
.verifier
.data
));
901 p
->c_arg
.fh
= &p
->o_res
.fh
;
902 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
903 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
904 nfs4_init_opendata_res(p
);
914 static void nfs4_opendata_free(struct kref
*kref
)
916 struct nfs4_opendata
*p
= container_of(kref
,
917 struct nfs4_opendata
, kref
);
918 struct super_block
*sb
= p
->dentry
->d_sb
;
920 nfs_free_seqid(p
->o_arg
.seqid
);
921 if (p
->state
!= NULL
)
922 nfs4_put_open_state(p
->state
);
923 nfs4_put_state_owner(p
->owner
);
927 nfs_fattr_free_names(&p
->f_attr
);
931 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
934 kref_put(&p
->kref
, nfs4_opendata_free
);
937 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
941 ret
= rpc_wait_for_completion_task(task
);
945 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
949 if (open_mode
& (O_EXCL
|O_TRUNC
))
951 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
953 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
954 && state
->n_rdonly
!= 0;
957 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
958 && state
->n_wronly
!= 0;
960 case FMODE_READ
|FMODE_WRITE
:
961 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
962 && state
->n_rdwr
!= 0;
968 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
970 if (delegation
== NULL
)
972 if ((delegation
->type
& fmode
) != fmode
)
974 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
976 nfs_mark_delegation_referenced(delegation
);
980 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
989 case FMODE_READ
|FMODE_WRITE
:
992 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
995 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
997 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
998 nfs4_stateid_copy(&state
->stateid
, stateid
);
999 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1002 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1005 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1007 case FMODE_READ
|FMODE_WRITE
:
1008 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1012 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1014 write_seqlock(&state
->seqlock
);
1015 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
1016 write_sequnlock(&state
->seqlock
);
1019 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1022 * Protect the call to nfs4_state_set_mode_locked and
1023 * serialise the stateid update
1025 write_seqlock(&state
->seqlock
);
1026 if (deleg_stateid
!= NULL
) {
1027 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1028 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1030 if (open_stateid
!= NULL
)
1031 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1032 write_sequnlock(&state
->seqlock
);
1033 spin_lock(&state
->owner
->so_lock
);
1034 update_open_stateflags(state
, fmode
);
1035 spin_unlock(&state
->owner
->so_lock
);
1038 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1040 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1041 struct nfs_delegation
*deleg_cur
;
1044 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1047 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1048 if (deleg_cur
== NULL
)
1051 spin_lock(&deleg_cur
->lock
);
1052 if (nfsi
->delegation
!= deleg_cur
||
1053 (deleg_cur
->type
& fmode
) != fmode
)
1054 goto no_delegation_unlock
;
1056 if (delegation
== NULL
)
1057 delegation
= &deleg_cur
->stateid
;
1058 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1059 goto no_delegation_unlock
;
1061 nfs_mark_delegation_referenced(deleg_cur
);
1062 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1064 no_delegation_unlock
:
1065 spin_unlock(&deleg_cur
->lock
);
1069 if (!ret
&& open_stateid
!= NULL
) {
1070 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1078 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1080 struct nfs_delegation
*delegation
;
1083 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1084 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1089 nfs4_inode_return_delegation(inode
);
1092 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1094 struct nfs4_state
*state
= opendata
->state
;
1095 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1096 struct nfs_delegation
*delegation
;
1097 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1098 fmode_t fmode
= opendata
->o_arg
.fmode
;
1099 nfs4_stateid stateid
;
1103 if (can_open_cached(state
, fmode
, open_mode
)) {
1104 spin_lock(&state
->owner
->so_lock
);
1105 if (can_open_cached(state
, fmode
, open_mode
)) {
1106 update_open_stateflags(state
, fmode
);
1107 spin_unlock(&state
->owner
->so_lock
);
1108 goto out_return_state
;
1110 spin_unlock(&state
->owner
->so_lock
);
1113 delegation
= rcu_dereference(nfsi
->delegation
);
1114 if (!can_open_delegated(delegation
, fmode
)) {
1118 /* Save the delegation */
1119 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1121 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1126 /* Try to update the stateid using the delegation */
1127 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1128 goto out_return_state
;
1131 return ERR_PTR(ret
);
1133 atomic_inc(&state
->count
);
1138 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1140 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1141 struct nfs_delegation
*delegation
;
1142 int delegation_flags
= 0;
1145 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1147 delegation_flags
= delegation
->flags
;
1149 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1150 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1151 "returning a delegation for "
1152 "OPEN(CLAIM_DELEGATE_CUR)\n",
1154 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1155 nfs_inode_set_delegation(state
->inode
,
1156 data
->owner
->so_cred
,
1159 nfs_inode_reclaim_delegation(state
->inode
,
1160 data
->owner
->so_cred
,
1165 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1166 * and update the nfs4_state.
1168 static struct nfs4_state
*
1169 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1171 struct inode
*inode
= data
->state
->inode
;
1172 struct nfs4_state
*state
= data
->state
;
1175 if (!data
->rpc_done
) {
1176 ret
= data
->rpc_status
;
1181 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1182 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1183 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1187 state
= nfs4_get_open_state(inode
, data
->owner
);
1191 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1195 if (data
->o_res
.delegation_type
!= 0)
1196 nfs4_opendata_check_deleg(data
, state
);
1197 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1202 return ERR_PTR(ret
);
1206 static struct nfs4_state
*
1207 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1209 struct inode
*inode
;
1210 struct nfs4_state
*state
= NULL
;
1213 if (!data
->rpc_done
) {
1214 state
= nfs4_try_open_cached(data
);
1219 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1221 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1222 ret
= PTR_ERR(inode
);
1226 state
= nfs4_get_open_state(inode
, data
->owner
);
1229 if (data
->o_res
.delegation_type
!= 0)
1230 nfs4_opendata_check_deleg(data
, state
);
1231 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1239 return ERR_PTR(ret
);
1242 static struct nfs4_state
*
1243 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1245 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1246 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1247 return _nfs4_opendata_to_nfs4_state(data
);
1250 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1252 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1253 struct nfs_open_context
*ctx
;
1255 spin_lock(&state
->inode
->i_lock
);
1256 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1257 if (ctx
->state
!= state
)
1259 get_nfs_open_context(ctx
);
1260 spin_unlock(&state
->inode
->i_lock
);
1263 spin_unlock(&state
->inode
->i_lock
);
1264 return ERR_PTR(-ENOENT
);
1267 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1269 struct nfs4_opendata
*opendata
;
1271 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1272 if (opendata
== NULL
)
1273 return ERR_PTR(-ENOMEM
);
1274 opendata
->state
= state
;
1275 atomic_inc(&state
->count
);
1279 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1281 struct nfs4_state
*newstate
;
1284 opendata
->o_arg
.open_flags
= 0;
1285 opendata
->o_arg
.fmode
= fmode
;
1286 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1287 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1288 nfs4_init_opendata_res(opendata
);
1289 ret
= _nfs4_recover_proc_open(opendata
);
1292 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1293 if (IS_ERR(newstate
))
1294 return PTR_ERR(newstate
);
1295 nfs4_close_state(newstate
, fmode
);
1300 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1302 struct nfs4_state
*newstate
;
1305 /* memory barrier prior to reading state->n_* */
1306 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1308 if (state
->n_rdwr
!= 0) {
1309 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1310 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1313 if (newstate
!= state
)
1316 if (state
->n_wronly
!= 0) {
1317 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1318 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1321 if (newstate
!= state
)
1324 if (state
->n_rdonly
!= 0) {
1325 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1326 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1329 if (newstate
!= state
)
1333 * We may have performed cached opens for all three recoveries.
1334 * Check if we need to update the current stateid.
1336 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1337 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1338 write_seqlock(&state
->seqlock
);
1339 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1340 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1341 write_sequnlock(&state
->seqlock
);
1348 * reclaim state on the server after a reboot.
1350 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1352 struct nfs_delegation
*delegation
;
1353 struct nfs4_opendata
*opendata
;
1354 fmode_t delegation_type
= 0;
1357 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1358 if (IS_ERR(opendata
))
1359 return PTR_ERR(opendata
);
1360 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1361 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1363 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1364 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1365 delegation_type
= delegation
->type
;
1367 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1368 status
= nfs4_open_recover(opendata
, state
);
1369 nfs4_opendata_put(opendata
);
1373 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1375 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1376 struct nfs4_exception exception
= { };
1379 err
= _nfs4_do_open_reclaim(ctx
, state
);
1380 if (err
!= -NFS4ERR_DELAY
)
1382 nfs4_handle_exception(server
, err
, &exception
);
1383 } while (exception
.retry
);
1387 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1389 struct nfs_open_context
*ctx
;
1392 ctx
= nfs4_state_find_open_context(state
);
1394 return PTR_ERR(ctx
);
1395 ret
= nfs4_do_open_reclaim(ctx
, state
);
1396 put_nfs_open_context(ctx
);
1400 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1402 struct nfs4_opendata
*opendata
;
1405 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1406 if (IS_ERR(opendata
))
1407 return PTR_ERR(opendata
);
1408 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1409 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1410 ret
= nfs4_open_recover(opendata
, state
);
1411 nfs4_opendata_put(opendata
);
1415 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1417 struct nfs4_exception exception
= { };
1418 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1421 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1427 case -NFS4ERR_BADSESSION
:
1428 case -NFS4ERR_BADSLOT
:
1429 case -NFS4ERR_BAD_HIGH_SLOT
:
1430 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1431 case -NFS4ERR_DEADSESSION
:
1432 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1434 case -NFS4ERR_STALE_CLIENTID
:
1435 case -NFS4ERR_STALE_STATEID
:
1436 case -NFS4ERR_EXPIRED
:
1437 /* Don't recall a delegation if it was lost */
1438 nfs4_schedule_lease_recovery(server
->nfs_client
);
1442 * The show must go on: exit, but mark the
1443 * stateid as needing recovery.
1445 case -NFS4ERR_DELEG_REVOKED
:
1446 case -NFS4ERR_ADMIN_REVOKED
:
1447 case -NFS4ERR_BAD_STATEID
:
1448 nfs_inode_find_state_and_recover(state
->inode
,
1450 nfs4_schedule_stateid_recovery(server
, state
);
1453 * User RPCSEC_GSS context has expired.
1454 * We cannot recover this stateid now, so
1455 * skip it and allow recovery thread to
1462 err
= nfs4_handle_exception(server
, err
, &exception
);
1463 } while (exception
.retry
);
1468 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1470 struct nfs4_opendata
*data
= calldata
;
1472 data
->rpc_status
= task
->tk_status
;
1473 if (data
->rpc_status
== 0) {
1474 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1475 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1476 renew_lease(data
->o_res
.server
, data
->timestamp
);
1481 static void nfs4_open_confirm_release(void *calldata
)
1483 struct nfs4_opendata
*data
= calldata
;
1484 struct nfs4_state
*state
= NULL
;
1486 /* If this request hasn't been cancelled, do nothing */
1487 if (data
->cancelled
== 0)
1489 /* In case of error, no cleanup! */
1490 if (!data
->rpc_done
)
1492 state
= nfs4_opendata_to_nfs4_state(data
);
1494 nfs4_close_state(state
, data
->o_arg
.fmode
);
1496 nfs4_opendata_put(data
);
1499 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1500 .rpc_call_done
= nfs4_open_confirm_done
,
1501 .rpc_release
= nfs4_open_confirm_release
,
1505 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1507 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1509 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1510 struct rpc_task
*task
;
1511 struct rpc_message msg
= {
1512 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1513 .rpc_argp
= &data
->c_arg
,
1514 .rpc_resp
= &data
->c_res
,
1515 .rpc_cred
= data
->owner
->so_cred
,
1517 struct rpc_task_setup task_setup_data
= {
1518 .rpc_client
= server
->client
,
1519 .rpc_message
= &msg
,
1520 .callback_ops
= &nfs4_open_confirm_ops
,
1521 .callback_data
= data
,
1522 .workqueue
= nfsiod_workqueue
,
1523 .flags
= RPC_TASK_ASYNC
,
1527 kref_get(&data
->kref
);
1529 data
->rpc_status
= 0;
1530 data
->timestamp
= jiffies
;
1531 task
= rpc_run_task(&task_setup_data
);
1533 return PTR_ERR(task
);
1534 status
= nfs4_wait_for_completion_rpc_task(task
);
1536 data
->cancelled
= 1;
1539 status
= data
->rpc_status
;
1544 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1546 struct nfs4_opendata
*data
= calldata
;
1547 struct nfs4_state_owner
*sp
= data
->owner
;
1549 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1552 * Check if we still need to send an OPEN call, or if we can use
1553 * a delegation instead.
1555 if (data
->state
!= NULL
) {
1556 struct nfs_delegation
*delegation
;
1558 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1561 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1562 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1563 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1564 goto unlock_no_action
;
1567 /* Update client id. */
1568 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1569 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1570 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1571 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1572 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1574 data
->timestamp
= jiffies
;
1575 if (nfs4_setup_sequence(data
->o_arg
.server
,
1576 &data
->o_arg
.seq_args
,
1577 &data
->o_res
.seq_res
,
1579 nfs_release_seqid(data
->o_arg
.seqid
);
1581 rpc_call_start(task
);
1586 task
->tk_action
= NULL
;
1590 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1592 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1593 nfs4_open_prepare(task
, calldata
);
1596 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1598 struct nfs4_opendata
*data
= calldata
;
1600 data
->rpc_status
= task
->tk_status
;
1602 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1605 if (task
->tk_status
== 0) {
1606 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1607 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1611 data
->rpc_status
= -ELOOP
;
1614 data
->rpc_status
= -EISDIR
;
1617 data
->rpc_status
= -ENOTDIR
;
1620 renew_lease(data
->o_res
.server
, data
->timestamp
);
1621 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1622 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1627 static void nfs4_open_release(void *calldata
)
1629 struct nfs4_opendata
*data
= calldata
;
1630 struct nfs4_state
*state
= NULL
;
1632 /* If this request hasn't been cancelled, do nothing */
1633 if (data
->cancelled
== 0)
1635 /* In case of error, no cleanup! */
1636 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1638 /* In case we need an open_confirm, no cleanup! */
1639 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1641 state
= nfs4_opendata_to_nfs4_state(data
);
1643 nfs4_close_state(state
, data
->o_arg
.fmode
);
1645 nfs4_opendata_put(data
);
1648 static const struct rpc_call_ops nfs4_open_ops
= {
1649 .rpc_call_prepare
= nfs4_open_prepare
,
1650 .rpc_call_done
= nfs4_open_done
,
1651 .rpc_release
= nfs4_open_release
,
1654 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1655 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1656 .rpc_call_done
= nfs4_open_done
,
1657 .rpc_release
= nfs4_open_release
,
1660 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1662 struct inode
*dir
= data
->dir
->d_inode
;
1663 struct nfs_server
*server
= NFS_SERVER(dir
);
1664 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1665 struct nfs_openres
*o_res
= &data
->o_res
;
1666 struct rpc_task
*task
;
1667 struct rpc_message msg
= {
1668 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1671 .rpc_cred
= data
->owner
->so_cred
,
1673 struct rpc_task_setup task_setup_data
= {
1674 .rpc_client
= server
->client
,
1675 .rpc_message
= &msg
,
1676 .callback_ops
= &nfs4_open_ops
,
1677 .callback_data
= data
,
1678 .workqueue
= nfsiod_workqueue
,
1679 .flags
= RPC_TASK_ASYNC
,
1683 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1684 kref_get(&data
->kref
);
1686 data
->rpc_status
= 0;
1687 data
->cancelled
= 0;
1689 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1690 task
= rpc_run_task(&task_setup_data
);
1692 return PTR_ERR(task
);
1693 status
= nfs4_wait_for_completion_rpc_task(task
);
1695 data
->cancelled
= 1;
1698 status
= data
->rpc_status
;
1704 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1706 struct inode
*dir
= data
->dir
->d_inode
;
1707 struct nfs_openres
*o_res
= &data
->o_res
;
1710 status
= nfs4_run_open_task(data
, 1);
1711 if (status
!= 0 || !data
->rpc_done
)
1714 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1716 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1717 status
= _nfs4_proc_open_confirm(data
);
1725 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1726 struct nfs4_opendata
*opendata
,
1727 struct nfs4_state
*state
, fmode_t fmode
)
1729 struct nfs_access_entry cache
;
1732 /* access call failed or for some reason the server doesn't
1733 * support any access modes -- defer access call until later */
1734 if (opendata
->o_res
.access_supported
== 0)
1738 /* don't check MAY_WRITE - a newly created file may not have
1739 * write mode bits, but POSIX allows the creating process to write */
1740 if (fmode
& FMODE_READ
)
1742 if (fmode
& FMODE_EXEC
)
1746 cache
.jiffies
= jiffies
;
1747 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1748 nfs_access_add_cache(state
->inode
, &cache
);
1750 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1753 /* even though OPEN succeeded, access is denied. Close the file */
1754 nfs4_close_state(state
, fmode
);
1759 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1761 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1763 struct inode
*dir
= data
->dir
->d_inode
;
1764 struct nfs_server
*server
= NFS_SERVER(dir
);
1765 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1766 struct nfs_openres
*o_res
= &data
->o_res
;
1769 status
= nfs4_run_open_task(data
, 0);
1770 if (!data
->rpc_done
)
1773 if (status
== -NFS4ERR_BADNAME
&&
1774 !(o_arg
->open_flags
& O_CREAT
))
1779 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1781 if (o_arg
->open_flags
& O_CREAT
)
1782 update_changeattr(dir
, &o_res
->cinfo
);
1783 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1784 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1785 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1786 status
= _nfs4_proc_open_confirm(data
);
1790 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1791 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1795 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1800 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1801 ret
= nfs4_wait_clnt_recover(clp
);
1804 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1805 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1807 nfs4_schedule_state_manager(clp
);
1813 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1815 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1820 * reclaim state on the server after a network partition.
1821 * Assumes caller holds the appropriate lock
1823 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1825 struct nfs4_opendata
*opendata
;
1828 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1829 if (IS_ERR(opendata
))
1830 return PTR_ERR(opendata
);
1831 ret
= nfs4_open_recover(opendata
, state
);
1833 d_drop(ctx
->dentry
);
1834 nfs4_opendata_put(opendata
);
1838 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1840 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1841 struct nfs4_exception exception
= { };
1845 err
= _nfs4_open_expired(ctx
, state
);
1849 case -NFS4ERR_GRACE
:
1850 case -NFS4ERR_DELAY
:
1851 nfs4_handle_exception(server
, err
, &exception
);
1854 } while (exception
.retry
);
1859 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1861 struct nfs_open_context
*ctx
;
1864 ctx
= nfs4_state_find_open_context(state
);
1866 return PTR_ERR(ctx
);
1867 ret
= nfs4_do_open_expired(ctx
, state
);
1868 put_nfs_open_context(ctx
);
1872 #if defined(CONFIG_NFS_V4_1)
1873 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1875 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1876 nfs4_stateid
*stateid
= &state
->stateid
;
1879 /* If a state reset has been done, test_stateid is unneeded */
1880 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1883 status
= nfs41_test_stateid(server
, stateid
);
1884 if (status
!= NFS_OK
) {
1885 /* Free the stateid unless the server explicitly
1886 * informs us the stateid is unrecognized. */
1887 if (status
!= -NFS4ERR_BAD_STATEID
)
1888 nfs41_free_stateid(server
, stateid
);
1889 nfs_remove_bad_delegation(state
->inode
);
1891 write_seqlock(&state
->seqlock
);
1892 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1893 write_sequnlock(&state
->seqlock
);
1894 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1899 * nfs41_check_open_stateid - possibly free an open stateid
1901 * @state: NFSv4 state for an inode
1903 * Returns NFS_OK if recovery for this stateid is now finished.
1904 * Otherwise a negative NFS4ERR value is returned.
1906 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1908 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1909 nfs4_stateid
*stateid
= &state
->open_stateid
;
1912 /* If a state reset has been done, test_stateid is unneeded */
1913 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1914 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1915 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1916 return -NFS4ERR_BAD_STATEID
;
1918 status
= nfs41_test_stateid(server
, stateid
);
1919 if (status
!= NFS_OK
) {
1920 /* Free the stateid unless the server explicitly
1921 * informs us the stateid is unrecognized. */
1922 if (status
!= -NFS4ERR_BAD_STATEID
)
1923 nfs41_free_stateid(server
, stateid
);
1925 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1926 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1927 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1932 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1936 nfs41_clear_delegation_stateid(state
);
1937 status
= nfs41_check_open_stateid(state
);
1938 if (status
!= NFS_OK
)
1939 status
= nfs4_open_expired(sp
, state
);
1945 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1946 * fields corresponding to attributes that were used to store the verifier.
1947 * Make sure we clobber those fields in the later setattr call
1949 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1951 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1952 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1953 sattr
->ia_valid
|= ATTR_ATIME
;
1955 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1956 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1957 sattr
->ia_valid
|= ATTR_MTIME
;
1961 * Returns a referenced nfs4_state
1963 static int _nfs4_do_open(struct inode
*dir
,
1964 struct dentry
*dentry
,
1967 struct iattr
*sattr
,
1968 struct rpc_cred
*cred
,
1969 struct nfs4_state
**res
,
1970 struct nfs4_threshold
**ctx_th
)
1972 struct nfs4_state_owner
*sp
;
1973 struct nfs4_state
*state
= NULL
;
1974 struct nfs_server
*server
= NFS_SERVER(dir
);
1975 struct nfs4_opendata
*opendata
;
1978 /* Protect against reboot recovery conflicts */
1980 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1982 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1985 status
= nfs4_recover_expired_lease(server
);
1987 goto err_put_state_owner
;
1988 if (dentry
->d_inode
!= NULL
)
1989 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1991 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1992 if (opendata
== NULL
)
1993 goto err_put_state_owner
;
1995 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
1996 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
1997 if (!opendata
->f_attr
.mdsthreshold
)
1998 goto err_opendata_put
;
1999 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2001 if (dentry
->d_inode
!= NULL
)
2002 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2004 status
= _nfs4_proc_open(opendata
);
2006 goto err_opendata_put
;
2008 state
= nfs4_opendata_to_nfs4_state(opendata
);
2009 status
= PTR_ERR(state
);
2011 goto err_opendata_put
;
2012 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2013 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2015 status
= nfs4_opendata_access(cred
, opendata
, state
, fmode
);
2017 goto err_opendata_put
;
2019 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
2020 nfs4_exclusive_attrset(opendata
, sattr
);
2022 nfs_fattr_init(opendata
->o_res
.f_attr
);
2023 status
= nfs4_do_setattr(state
->inode
, cred
,
2024 opendata
->o_res
.f_attr
, sattr
,
2027 nfs_setattr_update_inode(state
->inode
, sattr
);
2028 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2031 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2032 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2034 kfree(opendata
->f_attr
.mdsthreshold
);
2035 opendata
->f_attr
.mdsthreshold
= NULL
;
2037 nfs4_opendata_put(opendata
);
2038 nfs4_put_state_owner(sp
);
2042 kfree(opendata
->f_attr
.mdsthreshold
);
2043 nfs4_opendata_put(opendata
);
2044 err_put_state_owner
:
2045 nfs4_put_state_owner(sp
);
2052 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2053 struct dentry
*dentry
,
2056 struct iattr
*sattr
,
2057 struct rpc_cred
*cred
,
2058 struct nfs4_threshold
**ctx_th
)
2060 struct nfs4_exception exception
= { };
2061 struct nfs4_state
*res
;
2064 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
2066 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
2070 /* NOTE: BAD_SEQID means the server and client disagree about the
2071 * book-keeping w.r.t. state-changing operations
2072 * (OPEN/CLOSE/LOCK/LOCKU...)
2073 * It is actually a sign of a bug on the client or on the server.
2075 * If we receive a BAD_SEQID error in the particular case of
2076 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2077 * have unhashed the old state_owner for us, and that we can
2078 * therefore safely retry using a new one. We should still warn
2079 * the user though...
2081 if (status
== -NFS4ERR_BAD_SEQID
) {
2082 pr_warn_ratelimited("NFS: v4 server %s "
2083 " returned a bad sequence-id error!\n",
2084 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2085 exception
.retry
= 1;
2089 * BAD_STATEID on OPEN means that the server cancelled our
2090 * state before it received the OPEN_CONFIRM.
2091 * Recover by retrying the request as per the discussion
2092 * on Page 181 of RFC3530.
2094 if (status
== -NFS4ERR_BAD_STATEID
) {
2095 exception
.retry
= 1;
2098 if (status
== -EAGAIN
) {
2099 /* We must have found a delegation */
2100 exception
.retry
= 1;
2103 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
2104 status
, &exception
));
2105 } while (exception
.retry
);
2109 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2110 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2111 struct nfs4_state
*state
)
2113 struct nfs_server
*server
= NFS_SERVER(inode
);
2114 struct nfs_setattrargs arg
= {
2115 .fh
= NFS_FH(inode
),
2118 .bitmask
= server
->attr_bitmask
,
2120 struct nfs_setattrres res
= {
2124 struct rpc_message msg
= {
2125 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2130 unsigned long timestamp
= jiffies
;
2133 nfs_fattr_init(fattr
);
2135 if (state
!= NULL
) {
2136 struct nfs_lockowner lockowner
= {
2137 .l_owner
= current
->files
,
2138 .l_pid
= current
->tgid
,
2140 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2142 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
2144 /* Use that stateid */
2146 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2148 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2149 if (status
== 0 && state
!= NULL
)
2150 renew_lease(server
, timestamp
);
2154 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2155 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2156 struct nfs4_state
*state
)
2158 struct nfs_server
*server
= NFS_SERVER(inode
);
2159 struct nfs4_exception exception
= {
2165 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2167 case -NFS4ERR_OPENMODE
:
2168 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2170 if (sattr
->ia_valid
& ATTR_OPEN
)
2175 err
= nfs4_handle_exception(server
, err
, &exception
);
2176 } while (exception
.retry
);
2181 struct nfs4_closedata
{
2182 struct inode
*inode
;
2183 struct nfs4_state
*state
;
2184 struct nfs_closeargs arg
;
2185 struct nfs_closeres res
;
2186 struct nfs_fattr fattr
;
2187 unsigned long timestamp
;
2192 static void nfs4_free_closedata(void *data
)
2194 struct nfs4_closedata
*calldata
= data
;
2195 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2196 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2199 pnfs_roc_release(calldata
->state
->inode
);
2200 nfs4_put_open_state(calldata
->state
);
2201 nfs_free_seqid(calldata
->arg
.seqid
);
2202 nfs4_put_state_owner(sp
);
2203 nfs_sb_deactive_async(sb
);
2207 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2210 spin_lock(&state
->owner
->so_lock
);
2211 if (!(fmode
& FMODE_READ
))
2212 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2213 if (!(fmode
& FMODE_WRITE
))
2214 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2215 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2216 spin_unlock(&state
->owner
->so_lock
);
2219 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2221 struct nfs4_closedata
*calldata
= data
;
2222 struct nfs4_state
*state
= calldata
->state
;
2223 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2225 dprintk("%s: begin!\n", __func__
);
2226 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2228 /* hmm. we are done with the inode, and in the process of freeing
2229 * the state_owner. we keep this around to process errors
2231 switch (task
->tk_status
) {
2234 pnfs_roc_set_barrier(state
->inode
,
2235 calldata
->roc_barrier
);
2236 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2237 renew_lease(server
, calldata
->timestamp
);
2238 nfs4_close_clear_stateid_flags(state
,
2239 calldata
->arg
.fmode
);
2241 case -NFS4ERR_STALE_STATEID
:
2242 case -NFS4ERR_OLD_STATEID
:
2243 case -NFS4ERR_BAD_STATEID
:
2244 case -NFS4ERR_EXPIRED
:
2245 if (calldata
->arg
.fmode
== 0)
2248 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2249 rpc_restart_call_prepare(task
);
2251 nfs_release_seqid(calldata
->arg
.seqid
);
2252 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2253 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2256 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2258 struct nfs4_closedata
*calldata
= data
;
2259 struct nfs4_state
*state
= calldata
->state
;
2260 struct inode
*inode
= calldata
->inode
;
2263 dprintk("%s: begin!\n", __func__
);
2264 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2267 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2268 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2269 spin_lock(&state
->owner
->so_lock
);
2270 /* Calculate the change in open mode */
2271 if (state
->n_rdwr
== 0) {
2272 if (state
->n_rdonly
== 0) {
2273 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2274 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2275 calldata
->arg
.fmode
&= ~FMODE_READ
;
2277 if (state
->n_wronly
== 0) {
2278 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2279 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2280 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2283 spin_unlock(&state
->owner
->so_lock
);
2286 /* Note: exit _without_ calling nfs4_close_done */
2287 task
->tk_action
= NULL
;
2291 if (calldata
->arg
.fmode
== 0) {
2292 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2293 if (calldata
->roc
&&
2294 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
))
2298 nfs_fattr_init(calldata
->res
.fattr
);
2299 calldata
->timestamp
= jiffies
;
2300 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2301 &calldata
->arg
.seq_args
,
2302 &calldata
->res
.seq_res
,
2304 nfs_release_seqid(calldata
->arg
.seqid
);
2306 rpc_call_start(task
);
2308 dprintk("%s: done!\n", __func__
);
2311 static const struct rpc_call_ops nfs4_close_ops
= {
2312 .rpc_call_prepare
= nfs4_close_prepare
,
2313 .rpc_call_done
= nfs4_close_done
,
2314 .rpc_release
= nfs4_free_closedata
,
2318 * It is possible for data to be read/written from a mem-mapped file
2319 * after the sys_close call (which hits the vfs layer as a flush).
2320 * This means that we can't safely call nfsv4 close on a file until
2321 * the inode is cleared. This in turn means that we are not good
2322 * NFSv4 citizens - we do not indicate to the server to update the file's
2323 * share state even when we are done with one of the three share
2324 * stateid's in the inode.
2326 * NOTE: Caller must be holding the sp->so_owner semaphore!
2328 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2330 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2331 struct nfs4_closedata
*calldata
;
2332 struct nfs4_state_owner
*sp
= state
->owner
;
2333 struct rpc_task
*task
;
2334 struct rpc_message msg
= {
2335 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2336 .rpc_cred
= state
->owner
->so_cred
,
2338 struct rpc_task_setup task_setup_data
= {
2339 .rpc_client
= server
->client
,
2340 .rpc_message
= &msg
,
2341 .callback_ops
= &nfs4_close_ops
,
2342 .workqueue
= nfsiod_workqueue
,
2343 .flags
= RPC_TASK_ASYNC
,
2345 int status
= -ENOMEM
;
2347 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2348 if (calldata
== NULL
)
2350 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2351 calldata
->inode
= state
->inode
;
2352 calldata
->state
= state
;
2353 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2354 calldata
->arg
.stateid
= &state
->open_stateid
;
2355 /* Serialization for the sequence id */
2356 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2357 if (calldata
->arg
.seqid
== NULL
)
2358 goto out_free_calldata
;
2359 calldata
->arg
.fmode
= 0;
2360 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2361 calldata
->res
.fattr
= &calldata
->fattr
;
2362 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2363 calldata
->res
.server
= server
;
2364 calldata
->roc
= pnfs_roc(state
->inode
);
2365 nfs_sb_active(calldata
->inode
->i_sb
);
2367 msg
.rpc_argp
= &calldata
->arg
;
2368 msg
.rpc_resp
= &calldata
->res
;
2369 task_setup_data
.callback_data
= calldata
;
2370 task
= rpc_run_task(&task_setup_data
);
2372 return PTR_ERR(task
);
2375 status
= rpc_wait_for_completion_task(task
);
2381 nfs4_put_open_state(state
);
2382 nfs4_put_state_owner(sp
);
2386 static struct inode
*
2387 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2389 struct nfs4_state
*state
;
2391 /* Protect against concurrent sillydeletes */
2392 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2393 ctx
->cred
, &ctx
->mdsthreshold
);
2395 return ERR_CAST(state
);
2397 return igrab(state
->inode
);
2400 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2402 if (ctx
->state
== NULL
)
2405 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2407 nfs4_close_state(ctx
->state
, ctx
->mode
);
2410 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2412 struct nfs4_server_caps_arg args
= {
2415 struct nfs4_server_caps_res res
= {};
2416 struct rpc_message msg
= {
2417 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2423 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2425 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2426 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2427 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2428 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2429 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2430 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2431 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2432 server
->caps
|= NFS_CAP_ACLS
;
2433 if (res
.has_links
!= 0)
2434 server
->caps
|= NFS_CAP_HARDLINKS
;
2435 if (res
.has_symlinks
!= 0)
2436 server
->caps
|= NFS_CAP_SYMLINKS
;
2437 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2438 server
->caps
|= NFS_CAP_FILEID
;
2439 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2440 server
->caps
|= NFS_CAP_MODE
;
2441 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2442 server
->caps
|= NFS_CAP_NLINK
;
2443 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2444 server
->caps
|= NFS_CAP_OWNER
;
2445 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2446 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2447 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2448 server
->caps
|= NFS_CAP_ATIME
;
2449 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2450 server
->caps
|= NFS_CAP_CTIME
;
2451 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2452 server
->caps
|= NFS_CAP_MTIME
;
2454 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2455 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2456 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2457 server
->acl_bitmask
= res
.acl_bitmask
;
2458 server
->fh_expire_type
= res
.fh_expire_type
;
2464 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2466 struct nfs4_exception exception
= { };
2469 err
= nfs4_handle_exception(server
,
2470 _nfs4_server_capabilities(server
, fhandle
),
2472 } while (exception
.retry
);
2476 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2477 struct nfs_fsinfo
*info
)
2479 struct nfs4_lookup_root_arg args
= {
2480 .bitmask
= nfs4_fattr_bitmap
,
2482 struct nfs4_lookup_res res
= {
2484 .fattr
= info
->fattr
,
2487 struct rpc_message msg
= {
2488 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2493 nfs_fattr_init(info
->fattr
);
2494 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2497 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2498 struct nfs_fsinfo
*info
)
2500 struct nfs4_exception exception
= { };
2503 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2506 case -NFS4ERR_WRONGSEC
:
2509 err
= nfs4_handle_exception(server
, err
, &exception
);
2511 } while (exception
.retry
);
2516 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2517 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2519 struct rpc_auth
*auth
;
2522 auth
= rpcauth_create(flavor
, server
->client
);
2527 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2532 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2533 struct nfs_fsinfo
*info
)
2535 int i
, len
, status
= 0;
2536 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2538 len
= rpcauth_list_flavors(flav_array
, ARRAY_SIZE(flav_array
));
2542 for (i
= 0; i
< len
; i
++) {
2543 /* AUTH_UNIX is the default flavor if none was specified,
2544 * thus has already been tried. */
2545 if (flav_array
[i
] == RPC_AUTH_UNIX
)
2548 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2549 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2554 * -EACCESS could mean that the user doesn't have correct permissions
2555 * to access the mount. It could also mean that we tried to mount
2556 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2557 * existing mount programs don't handle -EACCES very well so it should
2558 * be mapped to -EPERM instead.
2560 if (status
== -EACCES
)
2566 * get the file handle for the "/" directory on the server
2568 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2569 struct nfs_fsinfo
*info
)
2571 int minor_version
= server
->nfs_client
->cl_minorversion
;
2572 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2573 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2575 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2576 * by nfs4_map_errors() as this function exits.
2578 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2580 status
= nfs4_server_capabilities(server
, fhandle
);
2582 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2583 return nfs4_map_errors(status
);
2586 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2587 struct nfs_fsinfo
*info
)
2590 struct nfs_fattr
*fattr
= info
->fattr
;
2592 error
= nfs4_server_capabilities(server
, mntfh
);
2594 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2598 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2600 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2604 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2605 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2606 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2612 * Get locations and (maybe) other attributes of a referral.
2613 * Note that we'll actually follow the referral later when
2614 * we detect fsid mismatch in inode revalidation
2616 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2617 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2618 struct nfs_fh
*fhandle
)
2620 int status
= -ENOMEM
;
2621 struct page
*page
= NULL
;
2622 struct nfs4_fs_locations
*locations
= NULL
;
2624 page
= alloc_page(GFP_KERNEL
);
2627 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2628 if (locations
== NULL
)
2631 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2634 /* Make sure server returned a different fsid for the referral */
2635 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2636 dprintk("%s: server did not return a different fsid for"
2637 " a referral at %s\n", __func__
, name
->name
);
2641 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2642 nfs_fixup_referral_attributes(&locations
->fattr
);
2644 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2645 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2646 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2654 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2656 struct nfs4_getattr_arg args
= {
2658 .bitmask
= server
->attr_bitmask
,
2660 struct nfs4_getattr_res res
= {
2664 struct rpc_message msg
= {
2665 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2670 nfs_fattr_init(fattr
);
2671 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2674 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2676 struct nfs4_exception exception
= { };
2679 err
= nfs4_handle_exception(server
,
2680 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2682 } while (exception
.retry
);
2687 * The file is not closed if it is opened due to the a request to change
2688 * the size of the file. The open call will not be needed once the
2689 * VFS layer lookup-intents are implemented.
2691 * Close is called when the inode is destroyed.
2692 * If we haven't opened the file for O_WRONLY, we
2693 * need to in the size_change case to obtain a stateid.
2696 * Because OPEN is always done by name in nfsv4, it is
2697 * possible that we opened a different file by the same
2698 * name. We can recognize this race condition, but we
2699 * can't do anything about it besides returning an error.
2701 * This will be fixed with VFS changes (lookup-intent).
2704 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2705 struct iattr
*sattr
)
2707 struct inode
*inode
= dentry
->d_inode
;
2708 struct rpc_cred
*cred
= NULL
;
2709 struct nfs4_state
*state
= NULL
;
2712 if (pnfs_ld_layoutret_on_setattr(inode
))
2713 pnfs_return_layout(inode
);
2715 nfs_fattr_init(fattr
);
2717 /* Deal with open(O_TRUNC) */
2718 if (sattr
->ia_valid
& ATTR_OPEN
)
2719 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2721 /* Optimization: if the end result is no change, don't RPC */
2722 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2725 /* Search for an existing open(O_WRITE) file */
2726 if (sattr
->ia_valid
& ATTR_FILE
) {
2727 struct nfs_open_context
*ctx
;
2729 ctx
= nfs_file_open_context(sattr
->ia_file
);
2736 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2738 nfs_setattr_update_inode(inode
, sattr
);
2742 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2743 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2744 struct nfs_fattr
*fattr
)
2746 struct nfs_server
*server
= NFS_SERVER(dir
);
2748 struct nfs4_lookup_arg args
= {
2749 .bitmask
= server
->attr_bitmask
,
2750 .dir_fh
= NFS_FH(dir
),
2753 struct nfs4_lookup_res res
= {
2758 struct rpc_message msg
= {
2759 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2764 nfs_fattr_init(fattr
);
2766 dprintk("NFS call lookup %s\n", name
->name
);
2767 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2768 dprintk("NFS reply lookup: %d\n", status
);
2772 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2774 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2775 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2776 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2780 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2781 struct qstr
*name
, struct nfs_fh
*fhandle
,
2782 struct nfs_fattr
*fattr
)
2784 struct nfs4_exception exception
= { };
2785 struct rpc_clnt
*client
= *clnt
;
2788 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2790 case -NFS4ERR_BADNAME
:
2793 case -NFS4ERR_MOVED
:
2794 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2796 case -NFS4ERR_WRONGSEC
:
2798 if (client
!= *clnt
)
2801 client
= nfs4_create_sec_client(client
, dir
, name
);
2803 return PTR_ERR(client
);
2805 exception
.retry
= 1;
2808 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2810 } while (exception
.retry
);
2815 else if (client
!= *clnt
)
2816 rpc_shutdown_client(client
);
2821 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2822 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2825 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2827 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2828 if (client
!= NFS_CLIENT(dir
)) {
2829 rpc_shutdown_client(client
);
2830 nfs_fixup_secinfo_attributes(fattr
);
2836 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2837 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2840 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2842 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2844 rpc_shutdown_client(client
);
2845 return ERR_PTR(status
);
2850 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2852 struct nfs_server
*server
= NFS_SERVER(inode
);
2853 struct nfs4_accessargs args
= {
2854 .fh
= NFS_FH(inode
),
2855 .bitmask
= server
->cache_consistency_bitmask
,
2857 struct nfs4_accessres res
= {
2860 struct rpc_message msg
= {
2861 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2864 .rpc_cred
= entry
->cred
,
2866 int mode
= entry
->mask
;
2870 * Determine which access bits we want to ask for...
2872 if (mode
& MAY_READ
)
2873 args
.access
|= NFS4_ACCESS_READ
;
2874 if (S_ISDIR(inode
->i_mode
)) {
2875 if (mode
& MAY_WRITE
)
2876 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2877 if (mode
& MAY_EXEC
)
2878 args
.access
|= NFS4_ACCESS_LOOKUP
;
2880 if (mode
& MAY_WRITE
)
2881 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2882 if (mode
& MAY_EXEC
)
2883 args
.access
|= NFS4_ACCESS_EXECUTE
;
2886 res
.fattr
= nfs_alloc_fattr();
2887 if (res
.fattr
== NULL
)
2890 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2892 nfs_access_set_mask(entry
, res
.access
);
2893 nfs_refresh_inode(inode
, res
.fattr
);
2895 nfs_free_fattr(res
.fattr
);
2899 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2901 struct nfs4_exception exception
= { };
2904 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2905 _nfs4_proc_access(inode
, entry
),
2907 } while (exception
.retry
);
2912 * TODO: For the time being, we don't try to get any attributes
2913 * along with any of the zero-copy operations READ, READDIR,
2916 * In the case of the first three, we want to put the GETATTR
2917 * after the read-type operation -- this is because it is hard
2918 * to predict the length of a GETATTR response in v4, and thus
2919 * align the READ data correctly. This means that the GETATTR
2920 * may end up partially falling into the page cache, and we should
2921 * shift it into the 'tail' of the xdr_buf before processing.
2922 * To do this efficiently, we need to know the total length
2923 * of data received, which doesn't seem to be available outside
2926 * In the case of WRITE, we also want to put the GETATTR after
2927 * the operation -- in this case because we want to make sure
2928 * we get the post-operation mtime and size.
2930 * Both of these changes to the XDR layer would in fact be quite
2931 * minor, but I decided to leave them for a subsequent patch.
2933 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2934 unsigned int pgbase
, unsigned int pglen
)
2936 struct nfs4_readlink args
= {
2937 .fh
= NFS_FH(inode
),
2942 struct nfs4_readlink_res res
;
2943 struct rpc_message msg
= {
2944 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2949 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2952 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2953 unsigned int pgbase
, unsigned int pglen
)
2955 struct nfs4_exception exception
= { };
2958 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2959 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2961 } while (exception
.retry
);
2966 * This is just for mknod. open(O_CREAT) will always do ->open_context().
2969 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2972 struct nfs_open_context
*ctx
;
2973 struct nfs4_state
*state
;
2976 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
2978 return PTR_ERR(ctx
);
2980 sattr
->ia_mode
&= ~current_umask();
2981 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
2982 flags
, sattr
, ctx
->cred
,
2983 &ctx
->mdsthreshold
);
2985 if (IS_ERR(state
)) {
2986 status
= PTR_ERR(state
);
2989 d_add(dentry
, igrab(state
->inode
));
2990 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2993 put_nfs_open_context(ctx
);
2997 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2999 struct nfs_server
*server
= NFS_SERVER(dir
);
3000 struct nfs_removeargs args
= {
3004 struct nfs_removeres res
= {
3007 struct rpc_message msg
= {
3008 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3014 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3016 update_changeattr(dir
, &res
.cinfo
);
3020 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3022 struct nfs4_exception exception
= { };
3025 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3026 _nfs4_proc_remove(dir
, name
),
3028 } while (exception
.retry
);
3032 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3034 struct nfs_server
*server
= NFS_SERVER(dir
);
3035 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3036 struct nfs_removeres
*res
= msg
->rpc_resp
;
3038 res
->server
= server
;
3039 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3040 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3043 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3045 if (nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3046 &data
->args
.seq_args
,
3050 rpc_call_start(task
);
3053 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3055 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
3057 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3059 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3061 update_changeattr(dir
, &res
->cinfo
);
3065 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3067 struct nfs_server
*server
= NFS_SERVER(dir
);
3068 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3069 struct nfs_renameres
*res
= msg
->rpc_resp
;
3071 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3072 res
->server
= server
;
3073 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3076 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3078 if (nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3079 &data
->args
.seq_args
,
3083 rpc_call_start(task
);
3086 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3087 struct inode
*new_dir
)
3089 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3091 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3093 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3096 update_changeattr(old_dir
, &res
->old_cinfo
);
3097 update_changeattr(new_dir
, &res
->new_cinfo
);
3101 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3102 struct inode
*new_dir
, struct qstr
*new_name
)
3104 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3105 struct nfs_renameargs arg
= {
3106 .old_dir
= NFS_FH(old_dir
),
3107 .new_dir
= NFS_FH(new_dir
),
3108 .old_name
= old_name
,
3109 .new_name
= new_name
,
3111 struct nfs_renameres res
= {
3114 struct rpc_message msg
= {
3115 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3119 int status
= -ENOMEM
;
3121 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3123 update_changeattr(old_dir
, &res
.old_cinfo
);
3124 update_changeattr(new_dir
, &res
.new_cinfo
);
3129 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3130 struct inode
*new_dir
, struct qstr
*new_name
)
3132 struct nfs4_exception exception
= { };
3135 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3136 _nfs4_proc_rename(old_dir
, old_name
,
3139 } while (exception
.retry
);
3143 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3145 struct nfs_server
*server
= NFS_SERVER(inode
);
3146 struct nfs4_link_arg arg
= {
3147 .fh
= NFS_FH(inode
),
3148 .dir_fh
= NFS_FH(dir
),
3150 .bitmask
= server
->attr_bitmask
,
3152 struct nfs4_link_res res
= {
3155 struct rpc_message msg
= {
3156 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3160 int status
= -ENOMEM
;
3162 res
.fattr
= nfs_alloc_fattr();
3163 if (res
.fattr
== NULL
)
3166 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3168 update_changeattr(dir
, &res
.cinfo
);
3169 nfs_post_op_update_inode(inode
, res
.fattr
);
3172 nfs_free_fattr(res
.fattr
);
3176 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3178 struct nfs4_exception exception
= { };
3181 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3182 _nfs4_proc_link(inode
, dir
, name
),
3184 } while (exception
.retry
);
3188 struct nfs4_createdata
{
3189 struct rpc_message msg
;
3190 struct nfs4_create_arg arg
;
3191 struct nfs4_create_res res
;
3193 struct nfs_fattr fattr
;
3196 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3197 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3199 struct nfs4_createdata
*data
;
3201 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3203 struct nfs_server
*server
= NFS_SERVER(dir
);
3205 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3206 data
->msg
.rpc_argp
= &data
->arg
;
3207 data
->msg
.rpc_resp
= &data
->res
;
3208 data
->arg
.dir_fh
= NFS_FH(dir
);
3209 data
->arg
.server
= server
;
3210 data
->arg
.name
= name
;
3211 data
->arg
.attrs
= sattr
;
3212 data
->arg
.ftype
= ftype
;
3213 data
->arg
.bitmask
= server
->attr_bitmask
;
3214 data
->res
.server
= server
;
3215 data
->res
.fh
= &data
->fh
;
3216 data
->res
.fattr
= &data
->fattr
;
3217 nfs_fattr_init(data
->res
.fattr
);
3222 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3224 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3225 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3227 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3228 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3233 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3238 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3239 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3241 struct nfs4_createdata
*data
;
3242 int status
= -ENAMETOOLONG
;
3244 if (len
> NFS4_MAXPATHLEN
)
3248 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3252 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3253 data
->arg
.u
.symlink
.pages
= &page
;
3254 data
->arg
.u
.symlink
.len
= len
;
3256 status
= nfs4_do_create(dir
, dentry
, data
);
3258 nfs4_free_createdata(data
);
3263 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3264 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3266 struct nfs4_exception exception
= { };
3269 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3270 _nfs4_proc_symlink(dir
, dentry
, page
,
3273 } while (exception
.retry
);
3277 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3278 struct iattr
*sattr
)
3280 struct nfs4_createdata
*data
;
3281 int status
= -ENOMEM
;
3283 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3287 status
= nfs4_do_create(dir
, dentry
, data
);
3289 nfs4_free_createdata(data
);
3294 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3295 struct iattr
*sattr
)
3297 struct nfs4_exception exception
= { };
3300 sattr
->ia_mode
&= ~current_umask();
3302 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3303 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3305 } while (exception
.retry
);
3309 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3310 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3312 struct inode
*dir
= dentry
->d_inode
;
3313 struct nfs4_readdir_arg args
= {
3318 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3321 struct nfs4_readdir_res res
;
3322 struct rpc_message msg
= {
3323 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3330 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3331 dentry
->d_parent
->d_name
.name
,
3332 dentry
->d_name
.name
,
3333 (unsigned long long)cookie
);
3334 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3335 res
.pgbase
= args
.pgbase
;
3336 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3338 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3339 status
+= args
.pgbase
;
3342 nfs_invalidate_atime(dir
);
3344 dprintk("%s: returns %d\n", __func__
, status
);
3348 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3349 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3351 struct nfs4_exception exception
= { };
3354 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3355 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3356 pages
, count
, plus
),
3358 } while (exception
.retry
);
3362 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3363 struct iattr
*sattr
, dev_t rdev
)
3365 struct nfs4_createdata
*data
;
3366 int mode
= sattr
->ia_mode
;
3367 int status
= -ENOMEM
;
3369 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3374 data
->arg
.ftype
= NF4FIFO
;
3375 else if (S_ISBLK(mode
)) {
3376 data
->arg
.ftype
= NF4BLK
;
3377 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3378 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3380 else if (S_ISCHR(mode
)) {
3381 data
->arg
.ftype
= NF4CHR
;
3382 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3383 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3384 } else if (!S_ISSOCK(mode
)) {
3389 status
= nfs4_do_create(dir
, dentry
, data
);
3391 nfs4_free_createdata(data
);
3396 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3397 struct iattr
*sattr
, dev_t rdev
)
3399 struct nfs4_exception exception
= { };
3402 sattr
->ia_mode
&= ~current_umask();
3404 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3405 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3407 } while (exception
.retry
);
3411 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3412 struct nfs_fsstat
*fsstat
)
3414 struct nfs4_statfs_arg args
= {
3416 .bitmask
= server
->attr_bitmask
,
3418 struct nfs4_statfs_res res
= {
3421 struct rpc_message msg
= {
3422 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3427 nfs_fattr_init(fsstat
->fattr
);
3428 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3431 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3433 struct nfs4_exception exception
= { };
3436 err
= nfs4_handle_exception(server
,
3437 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3439 } while (exception
.retry
);
3443 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3444 struct nfs_fsinfo
*fsinfo
)
3446 struct nfs4_fsinfo_arg args
= {
3448 .bitmask
= server
->attr_bitmask
,
3450 struct nfs4_fsinfo_res res
= {
3453 struct rpc_message msg
= {
3454 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3459 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3462 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3464 struct nfs4_exception exception
= { };
3468 err
= nfs4_handle_exception(server
,
3469 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3471 } while (exception
.retry
);
3475 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3479 nfs_fattr_init(fsinfo
->fattr
);
3480 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3482 /* block layout checks this! */
3483 server
->pnfs_blksize
= fsinfo
->blksize
;
3484 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3490 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3491 struct nfs_pathconf
*pathconf
)
3493 struct nfs4_pathconf_arg args
= {
3495 .bitmask
= server
->attr_bitmask
,
3497 struct nfs4_pathconf_res res
= {
3498 .pathconf
= pathconf
,
3500 struct rpc_message msg
= {
3501 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3506 /* None of the pathconf attributes are mandatory to implement */
3507 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3508 memset(pathconf
, 0, sizeof(*pathconf
));
3512 nfs_fattr_init(pathconf
->fattr
);
3513 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3516 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3517 struct nfs_pathconf
*pathconf
)
3519 struct nfs4_exception exception
= { };
3523 err
= nfs4_handle_exception(server
,
3524 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3526 } while (exception
.retry
);
3530 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3532 nfs_invalidate_atime(data
->header
->inode
);
3535 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3537 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3539 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3540 rpc_restart_call_prepare(task
);
3544 __nfs4_read_done_cb(data
);
3545 if (task
->tk_status
> 0)
3546 renew_lease(server
, data
->timestamp
);
3550 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3553 dprintk("--> %s\n", __func__
);
3555 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3558 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3559 nfs4_read_done_cb(task
, data
);
3562 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3564 data
->timestamp
= jiffies
;
3565 data
->read_done_cb
= nfs4_read_done_cb
;
3566 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3567 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3570 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3572 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3573 &data
->args
.seq_args
,
3577 rpc_call_start(task
);
3580 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3582 struct inode
*inode
= data
->header
->inode
;
3584 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3585 rpc_restart_call_prepare(task
);
3588 if (task
->tk_status
>= 0) {
3589 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3590 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3595 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3597 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3599 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3600 nfs4_write_done_cb(task
, data
);
3604 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3606 const struct nfs_pgio_header
*hdr
= data
->header
;
3608 /* Don't request attributes for pNFS or O_DIRECT writes */
3609 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3611 /* Otherwise, request attributes if and only if we don't hold
3614 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3617 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3619 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3621 if (!nfs4_write_need_cache_consistency_data(data
)) {
3622 data
->args
.bitmask
= NULL
;
3623 data
->res
.fattr
= NULL
;
3625 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3627 if (!data
->write_done_cb
)
3628 data
->write_done_cb
= nfs4_write_done_cb
;
3629 data
->res
.server
= server
;
3630 data
->timestamp
= jiffies
;
3632 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3633 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3636 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3638 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3639 &data
->args
.seq_args
,
3643 rpc_call_start(task
);
3646 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3648 if (nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3649 &data
->args
.seq_args
,
3653 rpc_call_start(task
);
3656 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3658 struct inode
*inode
= data
->inode
;
3660 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3661 rpc_restart_call_prepare(task
);
3667 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3669 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3671 return data
->commit_done_cb(task
, data
);
3674 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3676 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3678 if (data
->commit_done_cb
== NULL
)
3679 data
->commit_done_cb
= nfs4_commit_done_cb
;
3680 data
->res
.server
= server
;
3681 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3682 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3685 struct nfs4_renewdata
{
3686 struct nfs_client
*client
;
3687 unsigned long timestamp
;
3691 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3692 * standalone procedure for queueing an asynchronous RENEW.
3694 static void nfs4_renew_release(void *calldata
)
3696 struct nfs4_renewdata
*data
= calldata
;
3697 struct nfs_client
*clp
= data
->client
;
3699 if (atomic_read(&clp
->cl_count
) > 1)
3700 nfs4_schedule_state_renewal(clp
);
3701 nfs_put_client(clp
);
3705 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3707 struct nfs4_renewdata
*data
= calldata
;
3708 struct nfs_client
*clp
= data
->client
;
3709 unsigned long timestamp
= data
->timestamp
;
3711 if (task
->tk_status
< 0) {
3712 /* Unless we're shutting down, schedule state recovery! */
3713 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3715 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3716 nfs4_schedule_lease_recovery(clp
);
3719 nfs4_schedule_path_down_recovery(clp
);
3721 do_renew_lease(clp
, timestamp
);
3724 static const struct rpc_call_ops nfs4_renew_ops
= {
3725 .rpc_call_done
= nfs4_renew_done
,
3726 .rpc_release
= nfs4_renew_release
,
3729 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3731 struct rpc_message msg
= {
3732 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3736 struct nfs4_renewdata
*data
;
3738 if (renew_flags
== 0)
3740 if (!atomic_inc_not_zero(&clp
->cl_count
))
3742 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3746 data
->timestamp
= jiffies
;
3747 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3748 &nfs4_renew_ops
, data
);
3751 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3753 struct rpc_message msg
= {
3754 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3758 unsigned long now
= jiffies
;
3761 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3764 do_renew_lease(clp
, now
);
3768 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3770 return (server
->caps
& NFS_CAP_ACLS
)
3771 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3772 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3775 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3776 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3779 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3781 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3782 struct page
**pages
, unsigned int *pgbase
)
3784 struct page
*newpage
, **spages
;
3790 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3791 newpage
= alloc_page(GFP_KERNEL
);
3793 if (newpage
== NULL
)
3795 memcpy(page_address(newpage
), buf
, len
);
3800 } while (buflen
!= 0);
3806 __free_page(spages
[rc
-1]);
3810 struct nfs4_cached_acl
{
3816 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3818 struct nfs_inode
*nfsi
= NFS_I(inode
);
3820 spin_lock(&inode
->i_lock
);
3821 kfree(nfsi
->nfs4_acl
);
3822 nfsi
->nfs4_acl
= acl
;
3823 spin_unlock(&inode
->i_lock
);
3826 static void nfs4_zap_acl_attr(struct inode
*inode
)
3828 nfs4_set_cached_acl(inode
, NULL
);
3831 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3833 struct nfs_inode
*nfsi
= NFS_I(inode
);
3834 struct nfs4_cached_acl
*acl
;
3837 spin_lock(&inode
->i_lock
);
3838 acl
= nfsi
->nfs4_acl
;
3841 if (buf
== NULL
) /* user is just asking for length */
3843 if (acl
->cached
== 0)
3845 ret
= -ERANGE
; /* see getxattr(2) man page */
3846 if (acl
->len
> buflen
)
3848 memcpy(buf
, acl
->data
, acl
->len
);
3852 spin_unlock(&inode
->i_lock
);
3856 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3858 struct nfs4_cached_acl
*acl
;
3859 size_t buflen
= sizeof(*acl
) + acl_len
;
3861 if (buflen
<= PAGE_SIZE
) {
3862 acl
= kmalloc(buflen
, GFP_KERNEL
);
3866 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3868 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3875 nfs4_set_cached_acl(inode
, acl
);
3879 * The getxattr API returns the required buffer length when called with a
3880 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3881 * the required buf. On a NULL buf, we send a page of data to the server
3882 * guessing that the ACL request can be serviced by a page. If so, we cache
3883 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3884 * the cache. If not so, we throw away the page, and cache the required
3885 * length. The next getxattr call will then produce another round trip to
3886 * the server, this time with the input buf of the required size.
3888 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3890 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3891 struct nfs_getaclargs args
= {
3892 .fh
= NFS_FH(inode
),
3896 struct nfs_getaclres res
= {
3899 struct rpc_message msg
= {
3900 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3904 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3905 int ret
= -ENOMEM
, i
;
3907 /* As long as we're doing a round trip to the server anyway,
3908 * let's be prepared for a page of acl data. */
3911 if (npages
> ARRAY_SIZE(pages
))
3914 for (i
= 0; i
< npages
; i
++) {
3915 pages
[i
] = alloc_page(GFP_KERNEL
);
3920 /* for decoding across pages */
3921 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3922 if (!res
.acl_scratch
)
3925 args
.acl_len
= npages
* PAGE_SIZE
;
3926 args
.acl_pgbase
= 0;
3928 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3929 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3930 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3931 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3935 /* Handle the case where the passed-in buffer is too short */
3936 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
3937 /* Did the user only issue a request for the acl length? */
3943 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
3945 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
3949 for (i
= 0; i
< npages
; i
++)
3951 __free_page(pages
[i
]);
3952 if (res
.acl_scratch
)
3953 __free_page(res
.acl_scratch
);
3957 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3959 struct nfs4_exception exception
= { };
3962 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3965 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3966 } while (exception
.retry
);
3970 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3972 struct nfs_server
*server
= NFS_SERVER(inode
);
3975 if (!nfs4_server_supports_acls(server
))
3977 ret
= nfs_revalidate_inode(server
, inode
);
3980 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3981 nfs_zap_acl_cache(inode
);
3982 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3984 /* -ENOENT is returned if there is no ACL or if there is an ACL
3985 * but no cached acl data, just the acl length */
3987 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3990 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3992 struct nfs_server
*server
= NFS_SERVER(inode
);
3993 struct page
*pages
[NFS4ACL_MAXPAGES
];
3994 struct nfs_setaclargs arg
= {
3995 .fh
= NFS_FH(inode
),
3999 struct nfs_setaclres res
;
4000 struct rpc_message msg
= {
4001 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4005 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4008 if (!nfs4_server_supports_acls(server
))
4010 if (npages
> ARRAY_SIZE(pages
))
4012 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4015 nfs4_inode_return_delegation(inode
);
4016 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4019 * Free each page after tx, so the only ref left is
4020 * held by the network stack
4023 put_page(pages
[i
-1]);
4026 * Acl update can result in inode attribute update.
4027 * so mark the attribute cache invalid.
4029 spin_lock(&inode
->i_lock
);
4030 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4031 spin_unlock(&inode
->i_lock
);
4032 nfs_access_zap_cache(inode
);
4033 nfs_zap_acl_cache(inode
);
4037 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4039 struct nfs4_exception exception
= { };
4042 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4043 __nfs4_proc_set_acl(inode
, buf
, buflen
),
4045 } while (exception
.retry
);
4050 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4052 struct nfs_client
*clp
= server
->nfs_client
;
4054 if (task
->tk_status
>= 0)
4056 switch(task
->tk_status
) {
4057 case -NFS4ERR_DELEG_REVOKED
:
4058 case -NFS4ERR_ADMIN_REVOKED
:
4059 case -NFS4ERR_BAD_STATEID
:
4062 nfs_remove_bad_delegation(state
->inode
);
4063 case -NFS4ERR_OPENMODE
:
4066 nfs4_schedule_stateid_recovery(server
, state
);
4067 goto wait_on_recovery
;
4068 case -NFS4ERR_EXPIRED
:
4070 nfs4_schedule_stateid_recovery(server
, state
);
4071 case -NFS4ERR_STALE_STATEID
:
4072 case -NFS4ERR_STALE_CLIENTID
:
4073 nfs4_schedule_lease_recovery(clp
);
4074 goto wait_on_recovery
;
4075 #if defined(CONFIG_NFS_V4_1)
4076 case -NFS4ERR_BADSESSION
:
4077 case -NFS4ERR_BADSLOT
:
4078 case -NFS4ERR_BAD_HIGH_SLOT
:
4079 case -NFS4ERR_DEADSESSION
:
4080 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4081 case -NFS4ERR_SEQ_FALSE_RETRY
:
4082 case -NFS4ERR_SEQ_MISORDERED
:
4083 dprintk("%s ERROR %d, Reset session\n", __func__
,
4085 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4086 task
->tk_status
= 0;
4088 #endif /* CONFIG_NFS_V4_1 */
4089 case -NFS4ERR_DELAY
:
4090 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4091 case -NFS4ERR_GRACE
:
4093 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4094 task
->tk_status
= 0;
4096 case -NFS4ERR_RETRY_UNCACHED_REP
:
4097 case -NFS4ERR_OLD_STATEID
:
4098 task
->tk_status
= 0;
4101 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4104 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4105 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4106 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4107 task
->tk_status
= 0;
4111 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4112 nfs4_verifier
*bootverf
)
4116 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4117 /* An impossible timestamp guarantees this value
4118 * will never match a generated boot time. */
4120 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4122 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4123 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4124 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4126 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4130 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4131 char *buf
, size_t len
)
4133 unsigned int result
;
4136 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4138 rpc_peeraddr2str(clp
->cl_rpcclient
,
4140 rpc_peeraddr2str(clp
->cl_rpcclient
,
4141 RPC_DISPLAY_PROTO
));
4147 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4148 char *buf
, size_t len
)
4150 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4152 if (nfs4_client_id_uniquifier
[0] != '\0')
4153 nodename
= nfs4_client_id_uniquifier
;
4154 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4155 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4160 * nfs4_proc_setclientid - Negotiate client ID
4161 * @clp: state data structure
4162 * @program: RPC program for NFSv4 callback service
4163 * @port: IP port number for NFS4 callback service
4164 * @cred: RPC credential to use for this call
4165 * @res: where to place the result
4167 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4169 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4170 unsigned short port
, struct rpc_cred
*cred
,
4171 struct nfs4_setclientid_res
*res
)
4173 nfs4_verifier sc_verifier
;
4174 struct nfs4_setclientid setclientid
= {
4175 .sc_verifier
= &sc_verifier
,
4177 .sc_cb_ident
= clp
->cl_cb_ident
,
4179 struct rpc_message msg
= {
4180 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4181 .rpc_argp
= &setclientid
,
4187 /* nfs_client_id4 */
4188 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4189 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4190 setclientid
.sc_name_len
=
4191 nfs4_init_uniform_client_string(clp
,
4192 setclientid
.sc_name
,
4193 sizeof(setclientid
.sc_name
));
4195 setclientid
.sc_name_len
=
4196 nfs4_init_nonuniform_client_string(clp
,
4197 setclientid
.sc_name
,
4198 sizeof(setclientid
.sc_name
));
4201 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4202 sizeof(setclientid
.sc_netid
),
4203 rpc_peeraddr2str(clp
->cl_rpcclient
,
4204 RPC_DISPLAY_NETID
));
4206 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4207 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4208 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4210 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4211 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4212 setclientid
.sc_name_len
, setclientid
.sc_name
);
4213 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4214 dprintk("NFS reply setclientid: %d\n", status
);
4219 * nfs4_proc_setclientid_confirm - Confirm client ID
4220 * @clp: state data structure
4221 * @res: result of a previous SETCLIENTID
4222 * @cred: RPC credential to use for this call
4224 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4226 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4227 struct nfs4_setclientid_res
*arg
,
4228 struct rpc_cred
*cred
)
4230 struct nfs_fsinfo fsinfo
;
4231 struct rpc_message msg
= {
4232 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4234 .rpc_resp
= &fsinfo
,
4240 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4241 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4244 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4246 spin_lock(&clp
->cl_lock
);
4247 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4248 clp
->cl_last_renewal
= now
;
4249 spin_unlock(&clp
->cl_lock
);
4251 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4255 struct nfs4_delegreturndata
{
4256 struct nfs4_delegreturnargs args
;
4257 struct nfs4_delegreturnres res
;
4259 nfs4_stateid stateid
;
4260 unsigned long timestamp
;
4261 struct nfs_fattr fattr
;
4265 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4267 struct nfs4_delegreturndata
*data
= calldata
;
4269 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4272 switch (task
->tk_status
) {
4273 case -NFS4ERR_STALE_STATEID
:
4274 case -NFS4ERR_EXPIRED
:
4276 renew_lease(data
->res
.server
, data
->timestamp
);
4279 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4281 rpc_restart_call_prepare(task
);
4285 data
->rpc_status
= task
->tk_status
;
4288 static void nfs4_delegreturn_release(void *calldata
)
4293 #if defined(CONFIG_NFS_V4_1)
4294 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4296 struct nfs4_delegreturndata
*d_data
;
4298 d_data
= (struct nfs4_delegreturndata
*)data
;
4300 if (nfs4_setup_sequence(d_data
->res
.server
,
4301 &d_data
->args
.seq_args
,
4302 &d_data
->res
.seq_res
, task
))
4304 rpc_call_start(task
);
4306 #endif /* CONFIG_NFS_V4_1 */
4308 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4309 #if defined(CONFIG_NFS_V4_1)
4310 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4311 #endif /* CONFIG_NFS_V4_1 */
4312 .rpc_call_done
= nfs4_delegreturn_done
,
4313 .rpc_release
= nfs4_delegreturn_release
,
4316 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4318 struct nfs4_delegreturndata
*data
;
4319 struct nfs_server
*server
= NFS_SERVER(inode
);
4320 struct rpc_task
*task
;
4321 struct rpc_message msg
= {
4322 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4325 struct rpc_task_setup task_setup_data
= {
4326 .rpc_client
= server
->client
,
4327 .rpc_message
= &msg
,
4328 .callback_ops
= &nfs4_delegreturn_ops
,
4329 .flags
= RPC_TASK_ASYNC
,
4333 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4336 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4337 data
->args
.fhandle
= &data
->fh
;
4338 data
->args
.stateid
= &data
->stateid
;
4339 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4340 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4341 nfs4_stateid_copy(&data
->stateid
, stateid
);
4342 data
->res
.fattr
= &data
->fattr
;
4343 data
->res
.server
= server
;
4344 nfs_fattr_init(data
->res
.fattr
);
4345 data
->timestamp
= jiffies
;
4346 data
->rpc_status
= 0;
4348 task_setup_data
.callback_data
= data
;
4349 msg
.rpc_argp
= &data
->args
;
4350 msg
.rpc_resp
= &data
->res
;
4351 task
= rpc_run_task(&task_setup_data
);
4353 return PTR_ERR(task
);
4356 status
= nfs4_wait_for_completion_rpc_task(task
);
4359 status
= data
->rpc_status
;
4361 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4363 nfs_refresh_inode(inode
, &data
->fattr
);
4369 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4371 struct nfs_server
*server
= NFS_SERVER(inode
);
4372 struct nfs4_exception exception
= { };
4375 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4377 case -NFS4ERR_STALE_STATEID
:
4378 case -NFS4ERR_EXPIRED
:
4382 err
= nfs4_handle_exception(server
, err
, &exception
);
4383 } while (exception
.retry
);
4387 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4388 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4391 * sleep, with exponential backoff, and retry the LOCK operation.
4393 static unsigned long
4394 nfs4_set_lock_task_retry(unsigned long timeout
)
4396 freezable_schedule_timeout_killable(timeout
);
4398 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4399 return NFS4_LOCK_MAXTIMEOUT
;
4403 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4405 struct inode
*inode
= state
->inode
;
4406 struct nfs_server
*server
= NFS_SERVER(inode
);
4407 struct nfs_client
*clp
= server
->nfs_client
;
4408 struct nfs_lockt_args arg
= {
4409 .fh
= NFS_FH(inode
),
4412 struct nfs_lockt_res res
= {
4415 struct rpc_message msg
= {
4416 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4419 .rpc_cred
= state
->owner
->so_cred
,
4421 struct nfs4_lock_state
*lsp
;
4424 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4425 status
= nfs4_set_lock_state(state
, request
);
4428 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4429 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4430 arg
.lock_owner
.s_dev
= server
->s_dev
;
4431 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4434 request
->fl_type
= F_UNLCK
;
4436 case -NFS4ERR_DENIED
:
4439 request
->fl_ops
->fl_release_private(request
);
4444 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4446 struct nfs4_exception exception
= { };
4450 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4451 _nfs4_proc_getlk(state
, cmd
, request
),
4453 } while (exception
.retry
);
4457 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4460 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4462 res
= posix_lock_file_wait(file
, fl
);
4465 res
= flock_lock_file_wait(file
, fl
);
4473 struct nfs4_unlockdata
{
4474 struct nfs_locku_args arg
;
4475 struct nfs_locku_res res
;
4476 struct nfs4_lock_state
*lsp
;
4477 struct nfs_open_context
*ctx
;
4478 struct file_lock fl
;
4479 const struct nfs_server
*server
;
4480 unsigned long timestamp
;
4483 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4484 struct nfs_open_context
*ctx
,
4485 struct nfs4_lock_state
*lsp
,
4486 struct nfs_seqid
*seqid
)
4488 struct nfs4_unlockdata
*p
;
4489 struct inode
*inode
= lsp
->ls_state
->inode
;
4491 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4494 p
->arg
.fh
= NFS_FH(inode
);
4496 p
->arg
.seqid
= seqid
;
4497 p
->res
.seqid
= seqid
;
4498 p
->arg
.stateid
= &lsp
->ls_stateid
;
4500 atomic_inc(&lsp
->ls_count
);
4501 /* Ensure we don't close file until we're done freeing locks! */
4502 p
->ctx
= get_nfs_open_context(ctx
);
4503 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4504 p
->server
= NFS_SERVER(inode
);
4508 static void nfs4_locku_release_calldata(void *data
)
4510 struct nfs4_unlockdata
*calldata
= data
;
4511 nfs_free_seqid(calldata
->arg
.seqid
);
4512 nfs4_put_lock_state(calldata
->lsp
);
4513 put_nfs_open_context(calldata
->ctx
);
4517 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4519 struct nfs4_unlockdata
*calldata
= data
;
4521 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4523 switch (task
->tk_status
) {
4525 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4526 &calldata
->res
.stateid
);
4527 renew_lease(calldata
->server
, calldata
->timestamp
);
4529 case -NFS4ERR_BAD_STATEID
:
4530 case -NFS4ERR_OLD_STATEID
:
4531 case -NFS4ERR_STALE_STATEID
:
4532 case -NFS4ERR_EXPIRED
:
4535 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4536 rpc_restart_call_prepare(task
);
4538 nfs_release_seqid(calldata
->arg
.seqid
);
4541 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4543 struct nfs4_unlockdata
*calldata
= data
;
4545 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4547 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4548 /* Note: exit _without_ running nfs4_locku_done */
4549 task
->tk_action
= NULL
;
4552 calldata
->timestamp
= jiffies
;
4553 if (nfs4_setup_sequence(calldata
->server
,
4554 &calldata
->arg
.seq_args
,
4555 &calldata
->res
.seq_res
,
4557 nfs_release_seqid(calldata
->arg
.seqid
);
4559 rpc_call_start(task
);
4562 static const struct rpc_call_ops nfs4_locku_ops
= {
4563 .rpc_call_prepare
= nfs4_locku_prepare
,
4564 .rpc_call_done
= nfs4_locku_done
,
4565 .rpc_release
= nfs4_locku_release_calldata
,
4568 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4569 struct nfs_open_context
*ctx
,
4570 struct nfs4_lock_state
*lsp
,
4571 struct nfs_seqid
*seqid
)
4573 struct nfs4_unlockdata
*data
;
4574 struct rpc_message msg
= {
4575 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4576 .rpc_cred
= ctx
->cred
,
4578 struct rpc_task_setup task_setup_data
= {
4579 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4580 .rpc_message
= &msg
,
4581 .callback_ops
= &nfs4_locku_ops
,
4582 .workqueue
= nfsiod_workqueue
,
4583 .flags
= RPC_TASK_ASYNC
,
4586 /* Ensure this is an unlock - when canceling a lock, the
4587 * canceled lock is passed in, and it won't be an unlock.
4589 fl
->fl_type
= F_UNLCK
;
4591 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4593 nfs_free_seqid(seqid
);
4594 return ERR_PTR(-ENOMEM
);
4597 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4598 msg
.rpc_argp
= &data
->arg
;
4599 msg
.rpc_resp
= &data
->res
;
4600 task_setup_data
.callback_data
= data
;
4601 return rpc_run_task(&task_setup_data
);
4604 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4606 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4607 struct nfs_seqid
*seqid
;
4608 struct nfs4_lock_state
*lsp
;
4609 struct rpc_task
*task
;
4611 unsigned char fl_flags
= request
->fl_flags
;
4613 status
= nfs4_set_lock_state(state
, request
);
4614 /* Unlock _before_ we do the RPC call */
4615 request
->fl_flags
|= FL_EXISTS
;
4616 down_read(&nfsi
->rwsem
);
4617 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4618 up_read(&nfsi
->rwsem
);
4621 up_read(&nfsi
->rwsem
);
4624 /* Is this a delegated lock? */
4625 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4627 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4628 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4632 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4633 status
= PTR_ERR(task
);
4636 status
= nfs4_wait_for_completion_rpc_task(task
);
4639 request
->fl_flags
= fl_flags
;
4643 struct nfs4_lockdata
{
4644 struct nfs_lock_args arg
;
4645 struct nfs_lock_res res
;
4646 struct nfs4_lock_state
*lsp
;
4647 struct nfs_open_context
*ctx
;
4648 struct file_lock fl
;
4649 unsigned long timestamp
;
4652 struct nfs_server
*server
;
4655 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4656 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4659 struct nfs4_lockdata
*p
;
4660 struct inode
*inode
= lsp
->ls_state
->inode
;
4661 struct nfs_server
*server
= NFS_SERVER(inode
);
4663 p
= kzalloc(sizeof(*p
), gfp_mask
);
4667 p
->arg
.fh
= NFS_FH(inode
);
4669 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4670 if (p
->arg
.open_seqid
== NULL
)
4672 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4673 if (p
->arg
.lock_seqid
== NULL
)
4674 goto out_free_seqid
;
4675 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4676 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4677 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4678 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4679 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4682 atomic_inc(&lsp
->ls_count
);
4683 p
->ctx
= get_nfs_open_context(ctx
);
4684 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4687 nfs_free_seqid(p
->arg
.open_seqid
);
4693 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4695 struct nfs4_lockdata
*data
= calldata
;
4696 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4698 dprintk("%s: begin!\n", __func__
);
4699 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4701 /* Do we need to do an open_to_lock_owner? */
4702 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4703 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4704 goto out_release_lock_seqid
;
4705 data
->arg
.open_stateid
= &state
->stateid
;
4706 data
->arg
.new_lock_owner
= 1;
4707 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4709 data
->arg
.new_lock_owner
= 0;
4710 data
->timestamp
= jiffies
;
4711 if (nfs4_setup_sequence(data
->server
,
4712 &data
->arg
.seq_args
,
4715 rpc_call_start(task
);
4718 nfs_release_seqid(data
->arg
.open_seqid
);
4719 out_release_lock_seqid
:
4720 nfs_release_seqid(data
->arg
.lock_seqid
);
4721 dprintk("%s: done!, ret = %d\n", __func__
, task
->tk_status
);
4724 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4726 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4727 nfs4_lock_prepare(task
, calldata
);
4730 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4732 struct nfs4_lockdata
*data
= calldata
;
4734 dprintk("%s: begin!\n", __func__
);
4736 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4739 data
->rpc_status
= task
->tk_status
;
4740 if (data
->arg
.new_lock_owner
!= 0) {
4741 if (data
->rpc_status
== 0)
4742 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4746 if (data
->rpc_status
== 0) {
4747 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4748 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4749 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4752 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4755 static void nfs4_lock_release(void *calldata
)
4757 struct nfs4_lockdata
*data
= calldata
;
4759 dprintk("%s: begin!\n", __func__
);
4760 nfs_free_seqid(data
->arg
.open_seqid
);
4761 if (data
->cancelled
!= 0) {
4762 struct rpc_task
*task
;
4763 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4764 data
->arg
.lock_seqid
);
4766 rpc_put_task_async(task
);
4767 dprintk("%s: cancelling lock!\n", __func__
);
4769 nfs_free_seqid(data
->arg
.lock_seqid
);
4770 nfs4_put_lock_state(data
->lsp
);
4771 put_nfs_open_context(data
->ctx
);
4773 dprintk("%s: done!\n", __func__
);
4776 static const struct rpc_call_ops nfs4_lock_ops
= {
4777 .rpc_call_prepare
= nfs4_lock_prepare
,
4778 .rpc_call_done
= nfs4_lock_done
,
4779 .rpc_release
= nfs4_lock_release
,
4782 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4783 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4784 .rpc_call_done
= nfs4_lock_done
,
4785 .rpc_release
= nfs4_lock_release
,
4788 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4791 case -NFS4ERR_ADMIN_REVOKED
:
4792 case -NFS4ERR_BAD_STATEID
:
4793 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4794 if (new_lock_owner
!= 0 ||
4795 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4796 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4798 case -NFS4ERR_STALE_STATEID
:
4799 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4800 case -NFS4ERR_EXPIRED
:
4801 nfs4_schedule_lease_recovery(server
->nfs_client
);
4805 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4807 struct nfs4_lockdata
*data
;
4808 struct rpc_task
*task
;
4809 struct rpc_message msg
= {
4810 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4811 .rpc_cred
= state
->owner
->so_cred
,
4813 struct rpc_task_setup task_setup_data
= {
4814 .rpc_client
= NFS_CLIENT(state
->inode
),
4815 .rpc_message
= &msg
,
4816 .callback_ops
= &nfs4_lock_ops
,
4817 .workqueue
= nfsiod_workqueue
,
4818 .flags
= RPC_TASK_ASYNC
,
4822 dprintk("%s: begin!\n", __func__
);
4823 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4824 fl
->fl_u
.nfs4_fl
.owner
,
4825 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4829 data
->arg
.block
= 1;
4830 if (recovery_type
> NFS_LOCK_NEW
) {
4831 if (recovery_type
== NFS_LOCK_RECLAIM
)
4832 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4833 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4835 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4836 msg
.rpc_argp
= &data
->arg
;
4837 msg
.rpc_resp
= &data
->res
;
4838 task_setup_data
.callback_data
= data
;
4839 task
= rpc_run_task(&task_setup_data
);
4841 return PTR_ERR(task
);
4842 ret
= nfs4_wait_for_completion_rpc_task(task
);
4844 ret
= data
->rpc_status
;
4846 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4847 data
->arg
.new_lock_owner
, ret
);
4849 data
->cancelled
= 1;
4851 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4855 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4857 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4858 struct nfs4_exception exception
= {
4859 .inode
= state
->inode
,
4864 /* Cache the lock if possible... */
4865 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4867 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4868 if (err
!= -NFS4ERR_DELAY
)
4870 nfs4_handle_exception(server
, err
, &exception
);
4871 } while (exception
.retry
);
4875 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4877 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4878 struct nfs4_exception exception
= {
4879 .inode
= state
->inode
,
4883 err
= nfs4_set_lock_state(state
, request
);
4887 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4889 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4893 case -NFS4ERR_GRACE
:
4894 case -NFS4ERR_DELAY
:
4895 nfs4_handle_exception(server
, err
, &exception
);
4898 } while (exception
.retry
);
4903 #if defined(CONFIG_NFS_V4_1)
4905 * nfs41_check_expired_locks - possibly free a lock stateid
4907 * @state: NFSv4 state for an inode
4909 * Returns NFS_OK if recovery for this stateid is now finished.
4910 * Otherwise a negative NFS4ERR value is returned.
4912 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4914 int status
, ret
= -NFS4ERR_BAD_STATEID
;
4915 struct nfs4_lock_state
*lsp
;
4916 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4918 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4919 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
4920 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4921 if (status
!= NFS_OK
) {
4922 /* Free the stateid unless the server
4923 * informs us the stateid is unrecognized. */
4924 if (status
!= -NFS4ERR_BAD_STATEID
)
4925 nfs41_free_stateid(server
,
4927 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
4936 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4938 int status
= NFS_OK
;
4940 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4941 status
= nfs41_check_expired_locks(state
);
4942 if (status
!= NFS_OK
)
4943 status
= nfs4_lock_expired(state
, request
);
4948 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4950 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4951 unsigned char fl_flags
= request
->fl_flags
;
4952 int status
= -ENOLCK
;
4954 if ((fl_flags
& FL_POSIX
) &&
4955 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4957 /* Is this a delegated open? */
4958 status
= nfs4_set_lock_state(state
, request
);
4961 request
->fl_flags
|= FL_ACCESS
;
4962 status
= do_vfs_lock(request
->fl_file
, request
);
4965 down_read(&nfsi
->rwsem
);
4966 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4967 /* Yes: cache locks! */
4968 /* ...but avoid races with delegation recall... */
4969 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4970 status
= do_vfs_lock(request
->fl_file
, request
);
4973 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4976 /* Note: we always want to sleep here! */
4977 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4978 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4979 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4980 "manager!\n", __func__
);
4982 up_read(&nfsi
->rwsem
);
4984 request
->fl_flags
= fl_flags
;
4988 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4990 struct nfs4_exception exception
= {
4992 .inode
= state
->inode
,
4997 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4998 if (err
== -NFS4ERR_DENIED
)
5000 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5002 } while (exception
.retry
);
5007 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5009 struct nfs_open_context
*ctx
;
5010 struct nfs4_state
*state
;
5011 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5014 /* verify open state */
5015 ctx
= nfs_file_open_context(filp
);
5018 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5021 if (IS_GETLK(cmd
)) {
5023 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5027 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5030 if (request
->fl_type
== F_UNLCK
) {
5032 return nfs4_proc_unlck(state
, cmd
, request
);
5039 * Don't rely on the VFS having checked the file open mode,
5040 * since it won't do this for flock() locks.
5042 switch (request
->fl_type
) {
5044 if (!(filp
->f_mode
& FMODE_READ
))
5048 if (!(filp
->f_mode
& FMODE_WRITE
))
5053 status
= nfs4_proc_setlk(state
, cmd
, request
);
5054 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5056 timeout
= nfs4_set_lock_task_retry(timeout
);
5057 status
= -ERESTARTSYS
;
5060 } while(status
< 0);
5064 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
5066 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5067 struct nfs4_exception exception
= { };
5070 err
= nfs4_set_lock_state(state
, fl
);
5074 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5077 printk(KERN_ERR
"NFS: %s: unhandled error "
5078 "%d.\n", __func__
, err
);
5082 case -NFS4ERR_EXPIRED
:
5083 nfs4_schedule_stateid_recovery(server
, state
);
5084 case -NFS4ERR_STALE_CLIENTID
:
5085 case -NFS4ERR_STALE_STATEID
:
5086 nfs4_schedule_lease_recovery(server
->nfs_client
);
5088 case -NFS4ERR_BADSESSION
:
5089 case -NFS4ERR_BADSLOT
:
5090 case -NFS4ERR_BAD_HIGH_SLOT
:
5091 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
5092 case -NFS4ERR_DEADSESSION
:
5093 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
5097 * The show must go on: exit, but mark the
5098 * stateid as needing recovery.
5100 case -NFS4ERR_DELEG_REVOKED
:
5101 case -NFS4ERR_ADMIN_REVOKED
:
5102 case -NFS4ERR_BAD_STATEID
:
5103 case -NFS4ERR_OPENMODE
:
5104 nfs4_schedule_stateid_recovery(server
, state
);
5109 * User RPCSEC_GSS context has expired.
5110 * We cannot recover this stateid now, so
5111 * skip it and allow recovery thread to
5117 case -NFS4ERR_DENIED
:
5118 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
5121 case -NFS4ERR_DELAY
:
5124 err
= nfs4_handle_exception(server
, err
, &exception
);
5125 } while (exception
.retry
);
5130 struct nfs_release_lockowner_data
{
5131 struct nfs4_lock_state
*lsp
;
5132 struct nfs_server
*server
;
5133 struct nfs_release_lockowner_args args
;
5136 static void nfs4_release_lockowner_release(void *calldata
)
5138 struct nfs_release_lockowner_data
*data
= calldata
;
5139 nfs4_free_lock_state(data
->server
, data
->lsp
);
5143 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5144 .rpc_release
= nfs4_release_lockowner_release
,
5147 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
5149 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
5150 struct nfs_release_lockowner_data
*data
;
5151 struct rpc_message msg
= {
5152 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5155 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5157 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5161 data
->server
= server
;
5162 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5163 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5164 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5165 msg
.rpc_argp
= &data
->args
;
5166 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5170 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5172 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5173 const void *buf
, size_t buflen
,
5174 int flags
, int type
)
5176 if (strcmp(key
, "") != 0)
5179 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5182 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5183 void *buf
, size_t buflen
, int type
)
5185 if (strcmp(key
, "") != 0)
5188 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5191 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5192 size_t list_len
, const char *name
,
5193 size_t name_len
, int type
)
5195 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5197 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5200 if (list
&& len
<= list_len
)
5201 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5206 * nfs_fhget will use either the mounted_on_fileid or the fileid
5208 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5210 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5211 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5212 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5213 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5216 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5217 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5218 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5222 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5223 const struct qstr
*name
,
5224 struct nfs4_fs_locations
*fs_locations
,
5227 struct nfs_server
*server
= NFS_SERVER(dir
);
5229 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5231 struct nfs4_fs_locations_arg args
= {
5232 .dir_fh
= NFS_FH(dir
),
5237 struct nfs4_fs_locations_res res
= {
5238 .fs_locations
= fs_locations
,
5240 struct rpc_message msg
= {
5241 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5247 dprintk("%s: start\n", __func__
);
5249 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5250 * is not supported */
5251 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5252 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5254 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5256 nfs_fattr_init(&fs_locations
->fattr
);
5257 fs_locations
->server
= server
;
5258 fs_locations
->nlocations
= 0;
5259 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5260 dprintk("%s: returned status = %d\n", __func__
, status
);
5264 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5265 const struct qstr
*name
,
5266 struct nfs4_fs_locations
*fs_locations
,
5269 struct nfs4_exception exception
= { };
5272 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5273 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5275 } while (exception
.retry
);
5279 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5282 struct nfs4_secinfo_arg args
= {
5283 .dir_fh
= NFS_FH(dir
),
5286 struct nfs4_secinfo_res res
= {
5289 struct rpc_message msg
= {
5290 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5295 dprintk("NFS call secinfo %s\n", name
->name
);
5296 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5297 dprintk("NFS reply secinfo: %d\n", status
);
5301 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5302 struct nfs4_secinfo_flavors
*flavors
)
5304 struct nfs4_exception exception
= { };
5307 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5308 _nfs4_proc_secinfo(dir
, name
, flavors
),
5310 } while (exception
.retry
);
5314 #ifdef CONFIG_NFS_V4_1
5316 * Check the exchange flags returned by the server for invalid flags, having
5317 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5320 static int nfs4_check_cl_exchange_flags(u32 flags
)
5322 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5324 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5325 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5327 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5331 return -NFS4ERR_INVAL
;
5335 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5336 struct nfs41_server_scope
*b
)
5338 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5339 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5346 * nfs4_proc_bind_conn_to_session()
5348 * The 4.1 client currently uses the same TCP connection for the
5349 * fore and backchannel.
5351 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5354 struct nfs41_bind_conn_to_session_res res
;
5355 struct rpc_message msg
= {
5357 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5363 dprintk("--> %s\n", __func__
);
5365 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5366 if (unlikely(res
.session
== NULL
)) {
5371 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5373 if (memcmp(res
.session
->sess_id
.data
,
5374 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5375 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5379 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5380 dprintk("NFS: %s: Unexpected direction from server\n",
5385 if (res
.use_conn_in_rdma_mode
) {
5386 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5395 dprintk("<-- %s status= %d\n", __func__
, status
);
5400 * nfs4_proc_exchange_id()
5402 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5404 * Since the clientid has expired, all compounds using sessions
5405 * associated with the stale clientid will be returning
5406 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5407 * be in some phase of session reset.
5409 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5411 nfs4_verifier verifier
;
5412 struct nfs41_exchange_id_args args
= {
5413 .verifier
= &verifier
,
5415 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5417 struct nfs41_exchange_id_res res
= {
5421 struct rpc_message msg
= {
5422 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5428 nfs4_init_boot_verifier(clp
, &verifier
);
5429 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5431 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5432 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5433 args
.id_len
, args
.id
);
5435 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5437 if (unlikely(res
.server_owner
== NULL
)) {
5442 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5444 if (unlikely(res
.server_scope
== NULL
)) {
5446 goto out_server_owner
;
5449 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5450 if (unlikely(res
.impl_id
== NULL
)) {
5452 goto out_server_scope
;
5455 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5457 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5460 clp
->cl_clientid
= res
.clientid
;
5461 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5462 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5463 clp
->cl_seqid
= res
.seqid
;
5465 kfree(clp
->cl_serverowner
);
5466 clp
->cl_serverowner
= res
.server_owner
;
5467 res
.server_owner
= NULL
;
5469 /* use the most recent implementation id */
5470 kfree(clp
->cl_implid
);
5471 clp
->cl_implid
= res
.impl_id
;
5473 if (clp
->cl_serverscope
!= NULL
&&
5474 !nfs41_same_server_scope(clp
->cl_serverscope
,
5475 res
.server_scope
)) {
5476 dprintk("%s: server_scope mismatch detected\n",
5478 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5479 kfree(clp
->cl_serverscope
);
5480 clp
->cl_serverscope
= NULL
;
5483 if (clp
->cl_serverscope
== NULL
) {
5484 clp
->cl_serverscope
= res
.server_scope
;
5491 kfree(res
.server_owner
);
5493 kfree(res
.server_scope
);
5495 if (clp
->cl_implid
!= NULL
)
5496 dprintk("NFS reply exchange_id: Server Implementation ID: "
5497 "domain: %s, name: %s, date: %llu,%u\n",
5498 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5499 clp
->cl_implid
->date
.seconds
,
5500 clp
->cl_implid
->date
.nseconds
);
5501 dprintk("NFS reply exchange_id: %d\n", status
);
5505 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5506 struct rpc_cred
*cred
)
5508 struct rpc_message msg
= {
5509 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5515 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5517 dprintk("NFS: Got error %d from the server %s on "
5518 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5522 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5523 struct rpc_cred
*cred
)
5528 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5529 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5531 case -NFS4ERR_DELAY
:
5532 case -NFS4ERR_CLIENTID_BUSY
:
5542 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5544 struct rpc_cred
*cred
;
5547 if (clp
->cl_mvops
->minor_version
< 1)
5549 if (clp
->cl_exchange_flags
== 0)
5551 if (clp
->cl_preserve_clid
)
5553 cred
= nfs4_get_exchange_id_cred(clp
);
5554 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5559 case -NFS4ERR_STALE_CLIENTID
:
5560 clp
->cl_exchange_flags
= 0;
5566 struct nfs4_get_lease_time_data
{
5567 struct nfs4_get_lease_time_args
*args
;
5568 struct nfs4_get_lease_time_res
*res
;
5569 struct nfs_client
*clp
;
5572 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5576 struct nfs4_get_lease_time_data
*data
=
5577 (struct nfs4_get_lease_time_data
*)calldata
;
5579 dprintk("--> %s\n", __func__
);
5580 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5581 /* just setup sequence, do not trigger session recovery
5582 since we're invoked within one */
5583 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
5584 &data
->args
->la_seq_args
,
5585 &data
->res
->lr_seq_res
, task
);
5588 rpc_call_start(task
);
5589 dprintk("<-- %s\n", __func__
);
5593 * Called from nfs4_state_manager thread for session setup, so don't recover
5594 * from sequence operation or clientid errors.
5596 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5598 struct nfs4_get_lease_time_data
*data
=
5599 (struct nfs4_get_lease_time_data
*)calldata
;
5601 dprintk("--> %s\n", __func__
);
5602 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5604 switch (task
->tk_status
) {
5605 case -NFS4ERR_DELAY
:
5606 case -NFS4ERR_GRACE
:
5607 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5608 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5609 task
->tk_status
= 0;
5611 case -NFS4ERR_RETRY_UNCACHED_REP
:
5612 rpc_restart_call_prepare(task
);
5615 dprintk("<-- %s\n", __func__
);
5618 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5619 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5620 .rpc_call_done
= nfs4_get_lease_time_done
,
5623 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5625 struct rpc_task
*task
;
5626 struct nfs4_get_lease_time_args args
;
5627 struct nfs4_get_lease_time_res res
= {
5628 .lr_fsinfo
= fsinfo
,
5630 struct nfs4_get_lease_time_data data
= {
5635 struct rpc_message msg
= {
5636 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5640 struct rpc_task_setup task_setup
= {
5641 .rpc_client
= clp
->cl_rpcclient
,
5642 .rpc_message
= &msg
,
5643 .callback_ops
= &nfs4_get_lease_time_ops
,
5644 .callback_data
= &data
,
5645 .flags
= RPC_TASK_TIMEOUT
,
5649 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5650 dprintk("--> %s\n", __func__
);
5651 task
= rpc_run_task(&task_setup
);
5654 status
= PTR_ERR(task
);
5656 status
= task
->tk_status
;
5659 dprintk("<-- %s return %d\n", __func__
, status
);
5664 struct nfs4_slot
*nfs4_alloc_slots(struct nfs4_slot_table
*table
,
5665 u32 max_slots
, gfp_t gfp_flags
)
5667 struct nfs4_slot
*tbl
;
5670 tbl
= kmalloc_array(max_slots
, sizeof(*tbl
), gfp_flags
);
5672 for (i
= 0; i
< max_slots
; i
++)
5673 tbl
[i
].table
= table
;
5678 static void nfs4_add_and_init_slots(struct nfs4_slot_table
*tbl
,
5679 struct nfs4_slot
*new,
5683 struct nfs4_slot
*old
= NULL
;
5686 spin_lock(&tbl
->slot_tbl_lock
);
5690 tbl
->max_slots
= max_slots
;
5692 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5693 for (i
= 0; i
< tbl
->max_slots
; i
++)
5694 tbl
->slots
[i
].seq_nr
= ivalue
;
5695 spin_unlock(&tbl
->slot_tbl_lock
);
5700 * (re)Initialise a slot table
5702 static int nfs4_realloc_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
5705 struct nfs4_slot
*new = NULL
;
5708 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
5709 max_reqs
, tbl
->max_slots
);
5711 /* Does the newly negotiated max_reqs match the existing slot table? */
5712 if (max_reqs
!= tbl
->max_slots
) {
5713 new = nfs4_alloc_slots(tbl
, max_reqs
, GFP_NOFS
);
5719 nfs4_add_and_init_slots(tbl
, new, max_reqs
, ivalue
);
5720 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5721 tbl
, tbl
->slots
, tbl
->max_slots
);
5723 dprintk("<-- %s: return %d\n", __func__
, ret
);
5727 /* Destroy the slot table */
5728 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
5730 if (session
->fc_slot_table
.slots
!= NULL
) {
5731 kfree(session
->fc_slot_table
.slots
);
5732 session
->fc_slot_table
.slots
= NULL
;
5734 if (session
->bc_slot_table
.slots
!= NULL
) {
5735 kfree(session
->bc_slot_table
.slots
);
5736 session
->bc_slot_table
.slots
= NULL
;
5742 * Initialize or reset the forechannel and backchannel tables
5744 static int nfs4_setup_session_slot_tables(struct nfs4_session
*ses
)
5746 struct nfs4_slot_table
*tbl
;
5749 dprintk("--> %s\n", __func__
);
5751 tbl
= &ses
->fc_slot_table
;
5753 status
= nfs4_realloc_slot_table(tbl
, ses
->fc_attrs
.max_reqs
, 1);
5754 if (status
) /* -ENOMEM */
5757 tbl
= &ses
->bc_slot_table
;
5759 status
= nfs4_realloc_slot_table(tbl
, ses
->bc_attrs
.max_reqs
, 0);
5760 if (status
&& tbl
->slots
== NULL
)
5761 /* Fore and back channel share a connection so get
5762 * both slot tables or neither */
5763 nfs4_destroy_slot_tables(ses
);
5767 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5769 struct nfs4_session
*session
;
5770 struct nfs4_slot_table
*tbl
;
5772 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5776 tbl
= &session
->fc_slot_table
;
5777 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5778 spin_lock_init(&tbl
->slot_tbl_lock
);
5779 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5780 init_completion(&tbl
->complete
);
5782 tbl
= &session
->bc_slot_table
;
5783 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5784 spin_lock_init(&tbl
->slot_tbl_lock
);
5785 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5786 init_completion(&tbl
->complete
);
5788 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5794 void nfs4_destroy_session(struct nfs4_session
*session
)
5796 struct rpc_xprt
*xprt
;
5797 struct rpc_cred
*cred
;
5799 cred
= nfs4_get_exchange_id_cred(session
->clp
);
5800 nfs4_proc_destroy_session(session
, cred
);
5805 xprt
= rcu_dereference(session
->clp
->cl_rpcclient
->cl_xprt
);
5807 dprintk("%s Destroy backchannel for xprt %p\n",
5809 xprt_destroy_backchannel(xprt
, NFS41_BC_MIN_CALLBACKS
);
5810 nfs4_destroy_slot_tables(session
);
5815 * Initialize the values to be used by the client in CREATE_SESSION
5816 * If nfs4_init_session set the fore channel request and response sizes,
5819 * Set the back channel max_resp_sz_cached to zero to force the client to
5820 * always set csa_cachethis to FALSE because the current implementation
5821 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5823 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5825 struct nfs4_session
*session
= args
->client
->cl_session
;
5826 unsigned int mxrqst_sz
= session
->fc_target_max_rqst_sz
,
5827 mxresp_sz
= session
->fc_target_max_resp_sz
;
5830 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5832 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5833 /* Fore channel attributes */
5834 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5835 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5836 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5837 args
->fc_attrs
.max_reqs
= max_session_slots
;
5839 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5840 "max_ops=%u max_reqs=%u\n",
5842 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5843 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5845 /* Back channel attributes */
5846 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5847 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5848 args
->bc_attrs
.max_resp_sz_cached
= 0;
5849 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5850 args
->bc_attrs
.max_reqs
= 1;
5852 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5853 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5855 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5856 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5857 args
->bc_attrs
.max_reqs
);
5860 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5862 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5863 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5865 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5868 * Our requested max_ops is the minimum we need; we're not
5869 * prepared to break up compounds into smaller pieces than that.
5870 * So, no point even trying to continue if the server won't
5873 if (rcvd
->max_ops
< sent
->max_ops
)
5875 if (rcvd
->max_reqs
== 0)
5877 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5878 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5882 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5884 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5885 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5887 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5889 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5891 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5893 /* These would render the backchannel useless: */
5894 if (rcvd
->max_ops
!= sent
->max_ops
)
5896 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5901 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5902 struct nfs4_session
*session
)
5906 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5909 return nfs4_verify_back_channel_attrs(args
, session
);
5912 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5913 struct rpc_cred
*cred
)
5915 struct nfs4_session
*session
= clp
->cl_session
;
5916 struct nfs41_create_session_args args
= {
5918 .cb_program
= NFS4_CALLBACK
,
5920 struct nfs41_create_session_res res
= {
5923 struct rpc_message msg
= {
5924 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5931 nfs4_init_channel_attrs(&args
);
5932 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5934 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5937 /* Verify the session's negotiated channel_attrs values */
5938 status
= nfs4_verify_channel_attrs(&args
, session
);
5939 /* Increment the clientid slot sequence id */
5947 * Issues a CREATE_SESSION operation to the server.
5948 * It is the responsibility of the caller to verify the session is
5949 * expired before calling this routine.
5951 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5955 struct nfs4_session
*session
= clp
->cl_session
;
5957 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5959 status
= _nfs4_proc_create_session(clp
, cred
);
5963 /* Init or reset the session slot tables */
5964 status
= nfs4_setup_session_slot_tables(session
);
5965 dprintk("slot table setup returned %d\n", status
);
5969 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5970 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5971 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5973 dprintk("<-- %s\n", __func__
);
5978 * Issue the over-the-wire RPC DESTROY_SESSION.
5979 * The caller must serialize access to this routine.
5981 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5982 struct rpc_cred
*cred
)
5984 struct rpc_message msg
= {
5985 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5986 .rpc_argp
= session
,
5991 dprintk("--> nfs4_proc_destroy_session\n");
5993 /* session is still being setup */
5994 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5997 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6000 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
6001 "Session has been destroyed regardless...\n", status
);
6003 dprintk("<-- nfs4_proc_destroy_session\n");
6008 * With sessions, the client is not marked ready until after a
6009 * successful EXCHANGE_ID and CREATE_SESSION.
6011 * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate
6012 * other versions of NFS can be tried.
6014 static int nfs41_check_session_ready(struct nfs_client
*clp
)
6018 if (clp
->cl_cons_state
== NFS_CS_SESSION_INITING
) {
6019 ret
= nfs4_client_recover_expired_lease(clp
);
6023 if (clp
->cl_cons_state
< NFS_CS_READY
)
6024 return -EPROTONOSUPPORT
;
6029 int nfs4_init_session(struct nfs_server
*server
)
6031 struct nfs_client
*clp
= server
->nfs_client
;
6032 struct nfs4_session
*session
;
6033 unsigned int target_max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
;
6034 unsigned int target_max_resp_sz
= NFS_MAX_FILE_IO_SIZE
;
6036 if (!nfs4_has_session(clp
))
6039 if (server
->rsize
!= 0)
6040 target_max_resp_sz
= server
->rsize
;
6041 target_max_resp_sz
+= nfs41_maxread_overhead
;
6043 if (server
->wsize
!= 0)
6044 target_max_rqst_sz
= server
->wsize
;
6045 target_max_rqst_sz
+= nfs41_maxwrite_overhead
;
6047 session
= clp
->cl_session
;
6048 spin_lock(&clp
->cl_lock
);
6049 if (test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
)) {
6050 /* Initialise targets and channel attributes */
6051 session
->fc_target_max_rqst_sz
= target_max_rqst_sz
;
6052 session
->fc_attrs
.max_rqst_sz
= target_max_rqst_sz
;
6053 session
->fc_target_max_resp_sz
= target_max_resp_sz
;
6054 session
->fc_attrs
.max_resp_sz
= target_max_resp_sz
;
6056 /* Just adjust the targets */
6057 if (target_max_rqst_sz
> session
->fc_target_max_rqst_sz
) {
6058 session
->fc_target_max_rqst_sz
= target_max_rqst_sz
;
6059 set_bit(NFS4CLNT_SESSION_RESET
, &clp
->cl_state
);
6061 if (target_max_resp_sz
> session
->fc_target_max_resp_sz
) {
6062 session
->fc_target_max_resp_sz
= target_max_resp_sz
;
6063 set_bit(NFS4CLNT_SESSION_RESET
, &clp
->cl_state
);
6066 spin_unlock(&clp
->cl_lock
);
6068 if (test_bit(NFS4CLNT_SESSION_RESET
, &clp
->cl_state
))
6069 nfs4_schedule_lease_recovery(clp
);
6071 return nfs41_check_session_ready(clp
);
6074 int nfs4_init_ds_session(struct nfs_client
*clp
, unsigned long lease_time
)
6076 struct nfs4_session
*session
= clp
->cl_session
;
6079 spin_lock(&clp
->cl_lock
);
6080 if (test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
)) {
6082 * Do not set NFS_CS_CHECK_LEASE_TIME instead set the
6083 * DS lease to be equal to the MDS lease.
6085 clp
->cl_lease_time
= lease_time
;
6086 clp
->cl_last_renewal
= jiffies
;
6088 spin_unlock(&clp
->cl_lock
);
6090 ret
= nfs41_check_session_ready(clp
);
6093 /* Test for the DS role */
6094 if (!is_ds_client(clp
))
6098 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
6102 * Renew the cl_session lease.
6104 struct nfs4_sequence_data
{
6105 struct nfs_client
*clp
;
6106 struct nfs4_sequence_args args
;
6107 struct nfs4_sequence_res res
;
6110 static void nfs41_sequence_release(void *data
)
6112 struct nfs4_sequence_data
*calldata
= data
;
6113 struct nfs_client
*clp
= calldata
->clp
;
6115 if (atomic_read(&clp
->cl_count
) > 1)
6116 nfs4_schedule_state_renewal(clp
);
6117 nfs_put_client(clp
);
6121 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6123 switch(task
->tk_status
) {
6124 case -NFS4ERR_DELAY
:
6125 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6128 nfs4_schedule_lease_recovery(clp
);
6133 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
6135 struct nfs4_sequence_data
*calldata
= data
;
6136 struct nfs_client
*clp
= calldata
->clp
;
6138 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
6141 if (task
->tk_status
< 0) {
6142 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
6143 if (atomic_read(&clp
->cl_count
) == 1)
6146 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
6147 rpc_restart_call_prepare(task
);
6151 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
6153 dprintk("<-- %s\n", __func__
);
6156 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6158 struct nfs4_sequence_data
*calldata
= data
;
6159 struct nfs_client
*clp
= calldata
->clp
;
6160 struct nfs4_sequence_args
*args
;
6161 struct nfs4_sequence_res
*res
;
6163 args
= task
->tk_msg
.rpc_argp
;
6164 res
= task
->tk_msg
.rpc_resp
;
6166 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
))
6168 rpc_call_start(task
);
6171 static void nfs41_sequence_prepare_privileged(struct rpc_task
*task
, void *data
)
6173 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
6174 nfs41_sequence_prepare(task
, data
);
6177 static const struct rpc_call_ops nfs41_sequence_ops
= {
6178 .rpc_call_done
= nfs41_sequence_call_done
,
6179 .rpc_call_prepare
= nfs41_sequence_prepare
,
6180 .rpc_release
= nfs41_sequence_release
,
6183 static const struct rpc_call_ops nfs41_sequence_privileged_ops
= {
6184 .rpc_call_done
= nfs41_sequence_call_done
,
6185 .rpc_call_prepare
= nfs41_sequence_prepare_privileged
,
6186 .rpc_release
= nfs41_sequence_release
,
6189 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6190 const struct rpc_call_ops
*seq_ops
)
6192 struct nfs4_sequence_data
*calldata
;
6193 struct rpc_message msg
= {
6194 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6197 struct rpc_task_setup task_setup_data
= {
6198 .rpc_client
= clp
->cl_rpcclient
,
6199 .rpc_message
= &msg
,
6200 .callback_ops
= seq_ops
,
6201 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
6204 if (!atomic_inc_not_zero(&clp
->cl_count
))
6205 return ERR_PTR(-EIO
);
6206 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6207 if (calldata
== NULL
) {
6208 nfs_put_client(clp
);
6209 return ERR_PTR(-ENOMEM
);
6211 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6212 msg
.rpc_argp
= &calldata
->args
;
6213 msg
.rpc_resp
= &calldata
->res
;
6214 calldata
->clp
= clp
;
6215 task_setup_data
.callback_data
= calldata
;
6217 return rpc_run_task(&task_setup_data
);
6220 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6222 struct rpc_task
*task
;
6225 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6227 task
= _nfs41_proc_sequence(clp
, cred
, &nfs41_sequence_ops
);
6229 ret
= PTR_ERR(task
);
6231 rpc_put_task_async(task
);
6232 dprintk("<-- %s status=%d\n", __func__
, ret
);
6236 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6238 struct rpc_task
*task
;
6241 task
= _nfs41_proc_sequence(clp
, cred
, &nfs41_sequence_privileged_ops
);
6243 ret
= PTR_ERR(task
);
6246 ret
= rpc_wait_for_completion_task(task
);
6248 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6250 if (task
->tk_status
== 0)
6251 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6252 ret
= task
->tk_status
;
6256 dprintk("<-- %s status=%d\n", __func__
, ret
);
6260 struct nfs4_reclaim_complete_data
{
6261 struct nfs_client
*clp
;
6262 struct nfs41_reclaim_complete_args arg
;
6263 struct nfs41_reclaim_complete_res res
;
6266 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6268 struct nfs4_reclaim_complete_data
*calldata
= data
;
6270 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
6271 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
6272 &calldata
->arg
.seq_args
,
6273 &calldata
->res
.seq_res
, task
))
6276 rpc_call_start(task
);
6279 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6281 switch(task
->tk_status
) {
6283 case -NFS4ERR_COMPLETE_ALREADY
:
6284 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6286 case -NFS4ERR_DELAY
:
6287 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6289 case -NFS4ERR_RETRY_UNCACHED_REP
:
6292 nfs4_schedule_lease_recovery(clp
);
6297 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6299 struct nfs4_reclaim_complete_data
*calldata
= data
;
6300 struct nfs_client
*clp
= calldata
->clp
;
6301 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6303 dprintk("--> %s\n", __func__
);
6304 if (!nfs41_sequence_done(task
, res
))
6307 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6308 rpc_restart_call_prepare(task
);
6311 dprintk("<-- %s\n", __func__
);
6314 static void nfs4_free_reclaim_complete_data(void *data
)
6316 struct nfs4_reclaim_complete_data
*calldata
= data
;
6321 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6322 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6323 .rpc_call_done
= nfs4_reclaim_complete_done
,
6324 .rpc_release
= nfs4_free_reclaim_complete_data
,
6328 * Issue a global reclaim complete.
6330 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6332 struct nfs4_reclaim_complete_data
*calldata
;
6333 struct rpc_task
*task
;
6334 struct rpc_message msg
= {
6335 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6337 struct rpc_task_setup task_setup_data
= {
6338 .rpc_client
= clp
->cl_rpcclient
,
6339 .rpc_message
= &msg
,
6340 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6341 .flags
= RPC_TASK_ASYNC
,
6343 int status
= -ENOMEM
;
6345 dprintk("--> %s\n", __func__
);
6346 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6347 if (calldata
== NULL
)
6349 calldata
->clp
= clp
;
6350 calldata
->arg
.one_fs
= 0;
6352 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6353 msg
.rpc_argp
= &calldata
->arg
;
6354 msg
.rpc_resp
= &calldata
->res
;
6355 task_setup_data
.callback_data
= calldata
;
6356 task
= rpc_run_task(&task_setup_data
);
6358 status
= PTR_ERR(task
);
6361 status
= nfs4_wait_for_completion_rpc_task(task
);
6363 status
= task
->tk_status
;
6367 dprintk("<-- %s status=%d\n", __func__
, status
);
6372 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6374 struct nfs4_layoutget
*lgp
= calldata
;
6375 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6377 dprintk("--> %s\n", __func__
);
6378 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6379 * right now covering the LAYOUTGET we are about to send.
6380 * However, that is not so catastrophic, and there seems
6381 * to be no way to prevent it completely.
6383 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
6384 &lgp
->res
.seq_res
, task
))
6386 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6387 NFS_I(lgp
->args
.inode
)->layout
,
6388 lgp
->args
.ctx
->state
)) {
6389 rpc_exit(task
, NFS4_OK
);
6392 rpc_call_start(task
);
6395 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6397 struct nfs4_layoutget
*lgp
= calldata
;
6398 struct inode
*inode
= lgp
->args
.inode
;
6399 struct nfs_server
*server
= NFS_SERVER(inode
);
6400 struct pnfs_layout_hdr
*lo
;
6401 struct nfs4_state
*state
= NULL
;
6403 dprintk("--> %s\n", __func__
);
6405 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
6408 switch (task
->tk_status
) {
6411 case -NFS4ERR_LAYOUTTRYLATER
:
6412 case -NFS4ERR_RECALLCONFLICT
:
6413 task
->tk_status
= -NFS4ERR_DELAY
;
6415 case -NFS4ERR_EXPIRED
:
6416 case -NFS4ERR_BAD_STATEID
:
6417 spin_lock(&inode
->i_lock
);
6418 lo
= NFS_I(inode
)->layout
;
6419 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6420 spin_unlock(&inode
->i_lock
);
6421 /* If the open stateid was bad, then recover it. */
6422 state
= lgp
->args
.ctx
->state
;
6426 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6427 spin_unlock(&inode
->i_lock
);
6428 /* Mark the bad layout state as invalid, then
6429 * retry using the open stateid. */
6430 pnfs_free_lseg_list(&head
);
6433 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6434 rpc_restart_call_prepare(task
);
6436 dprintk("<-- %s\n", __func__
);
6439 static size_t max_response_pages(struct nfs_server
*server
)
6441 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6442 return nfs_page_array_len(0, max_resp_sz
);
6445 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6452 for (i
= 0; i
< size
; i
++) {
6455 __free_page(pages
[i
]);
6460 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6462 struct page
**pages
;
6465 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6467 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6471 for (i
= 0; i
< size
; i
++) {
6472 pages
[i
] = alloc_page(gfp_flags
);
6474 dprintk("%s: failed to allocate page\n", __func__
);
6475 nfs4_free_pages(pages
, size
);
6483 static void nfs4_layoutget_release(void *calldata
)
6485 struct nfs4_layoutget
*lgp
= calldata
;
6486 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6487 size_t max_pages
= max_response_pages(server
);
6489 dprintk("--> %s\n", __func__
);
6490 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6491 put_nfs_open_context(lgp
->args
.ctx
);
6493 dprintk("<-- %s\n", __func__
);
6496 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6497 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6498 .rpc_call_done
= nfs4_layoutget_done
,
6499 .rpc_release
= nfs4_layoutget_release
,
6502 struct pnfs_layout_segment
*
6503 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6505 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6506 size_t max_pages
= max_response_pages(server
);
6507 struct rpc_task
*task
;
6508 struct rpc_message msg
= {
6509 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6510 .rpc_argp
= &lgp
->args
,
6511 .rpc_resp
= &lgp
->res
,
6513 struct rpc_task_setup task_setup_data
= {
6514 .rpc_client
= server
->client
,
6515 .rpc_message
= &msg
,
6516 .callback_ops
= &nfs4_layoutget_call_ops
,
6517 .callback_data
= lgp
,
6518 .flags
= RPC_TASK_ASYNC
,
6520 struct pnfs_layout_segment
*lseg
= NULL
;
6523 dprintk("--> %s\n", __func__
);
6525 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6526 if (!lgp
->args
.layout
.pages
) {
6527 nfs4_layoutget_release(lgp
);
6528 return ERR_PTR(-ENOMEM
);
6530 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6532 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6533 lgp
->res
.seq_res
.sr_slot
= NULL
;
6534 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6535 task
= rpc_run_task(&task_setup_data
);
6537 return ERR_CAST(task
);
6538 status
= nfs4_wait_for_completion_rpc_task(task
);
6540 status
= task
->tk_status
;
6542 lseg
= pnfs_layout_process(lgp
);
6544 dprintk("<-- %s status=%d\n", __func__
, status
);
6546 return ERR_PTR(status
);
6551 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6553 struct nfs4_layoutreturn
*lrp
= calldata
;
6555 dprintk("--> %s\n", __func__
);
6556 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
6557 &lrp
->res
.seq_res
, task
))
6559 rpc_call_start(task
);
6562 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6564 struct nfs4_layoutreturn
*lrp
= calldata
;
6565 struct nfs_server
*server
;
6567 dprintk("--> %s\n", __func__
);
6569 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
6572 server
= NFS_SERVER(lrp
->args
.inode
);
6573 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6574 rpc_restart_call_prepare(task
);
6577 dprintk("<-- %s\n", __func__
);
6580 static void nfs4_layoutreturn_release(void *calldata
)
6582 struct nfs4_layoutreturn
*lrp
= calldata
;
6583 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6585 dprintk("--> %s\n", __func__
);
6586 spin_lock(&lo
->plh_inode
->i_lock
);
6587 if (lrp
->res
.lrs_present
)
6588 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6589 lo
->plh_block_lgets
--;
6590 spin_unlock(&lo
->plh_inode
->i_lock
);
6591 pnfs_put_layout_hdr(lrp
->args
.layout
);
6593 dprintk("<-- %s\n", __func__
);
6596 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6597 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6598 .rpc_call_done
= nfs4_layoutreturn_done
,
6599 .rpc_release
= nfs4_layoutreturn_release
,
6602 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6604 struct rpc_task
*task
;
6605 struct rpc_message msg
= {
6606 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6607 .rpc_argp
= &lrp
->args
,
6608 .rpc_resp
= &lrp
->res
,
6610 struct rpc_task_setup task_setup_data
= {
6611 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6612 .rpc_message
= &msg
,
6613 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6614 .callback_data
= lrp
,
6618 dprintk("--> %s\n", __func__
);
6619 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6620 task
= rpc_run_task(&task_setup_data
);
6622 return PTR_ERR(task
);
6623 status
= task
->tk_status
;
6624 dprintk("<-- %s status=%d\n", __func__
, status
);
6630 * Retrieve the list of Data Server devices from the MDS.
6632 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6633 const struct nfs_fh
*fh
,
6634 struct pnfs_devicelist
*devlist
)
6636 struct nfs4_getdevicelist_args args
= {
6638 .layoutclass
= server
->pnfs_curr_ld
->id
,
6640 struct nfs4_getdevicelist_res res
= {
6643 struct rpc_message msg
= {
6644 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6650 dprintk("--> %s\n", __func__
);
6651 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6653 dprintk("<-- %s status=%d\n", __func__
, status
);
6657 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6658 const struct nfs_fh
*fh
,
6659 struct pnfs_devicelist
*devlist
)
6661 struct nfs4_exception exception
= { };
6665 err
= nfs4_handle_exception(server
,
6666 _nfs4_getdevicelist(server
, fh
, devlist
),
6668 } while (exception
.retry
);
6670 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6671 err
, devlist
->num_devs
);
6675 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6678 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6680 struct nfs4_getdeviceinfo_args args
= {
6683 struct nfs4_getdeviceinfo_res res
= {
6686 struct rpc_message msg
= {
6687 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6693 dprintk("--> %s\n", __func__
);
6694 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6695 dprintk("<-- %s status=%d\n", __func__
, status
);
6700 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6702 struct nfs4_exception exception
= { };
6706 err
= nfs4_handle_exception(server
,
6707 _nfs4_proc_getdeviceinfo(server
, pdev
),
6709 } while (exception
.retry
);
6712 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6714 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6716 struct nfs4_layoutcommit_data
*data
= calldata
;
6717 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6719 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
6720 &data
->res
.seq_res
, task
))
6722 rpc_call_start(task
);
6726 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6728 struct nfs4_layoutcommit_data
*data
= calldata
;
6729 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6731 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6734 switch (task
->tk_status
) { /* Just ignore these failures */
6735 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6736 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6737 case -NFS4ERR_BADLAYOUT
: /* no layout */
6738 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6739 task
->tk_status
= 0;
6742 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6746 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6747 rpc_restart_call_prepare(task
);
6753 static void nfs4_layoutcommit_release(void *calldata
)
6755 struct nfs4_layoutcommit_data
*data
= calldata
;
6756 struct pnfs_layout_segment
*lseg
, *tmp
;
6757 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
6759 pnfs_cleanup_layoutcommit(data
);
6760 /* Matched by references in pnfs_set_layoutcommit */
6761 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
6762 list_del_init(&lseg
->pls_lc_list
);
6763 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
6765 pnfs_put_lseg(lseg
);
6768 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
6769 smp_mb__after_clear_bit();
6770 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
6772 put_rpccred(data
->cred
);
6776 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6777 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6778 .rpc_call_done
= nfs4_layoutcommit_done
,
6779 .rpc_release
= nfs4_layoutcommit_release
,
6783 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6785 struct rpc_message msg
= {
6786 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6787 .rpc_argp
= &data
->args
,
6788 .rpc_resp
= &data
->res
,
6789 .rpc_cred
= data
->cred
,
6791 struct rpc_task_setup task_setup_data
= {
6792 .task
= &data
->task
,
6793 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6794 .rpc_message
= &msg
,
6795 .callback_ops
= &nfs4_layoutcommit_ops
,
6796 .callback_data
= data
,
6797 .flags
= RPC_TASK_ASYNC
,
6799 struct rpc_task
*task
;
6802 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6803 "lbw: %llu inode %lu\n",
6804 data
->task
.tk_pid
, sync
,
6805 data
->args
.lastbytewritten
,
6806 data
->args
.inode
->i_ino
);
6808 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6809 task
= rpc_run_task(&task_setup_data
);
6811 return PTR_ERR(task
);
6814 status
= nfs4_wait_for_completion_rpc_task(task
);
6817 status
= task
->tk_status
;
6819 dprintk("%s: status %d\n", __func__
, status
);
6825 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6826 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6828 struct nfs41_secinfo_no_name_args args
= {
6829 .style
= SECINFO_STYLE_CURRENT_FH
,
6831 struct nfs4_secinfo_res res
= {
6834 struct rpc_message msg
= {
6835 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6839 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6843 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6844 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6846 struct nfs4_exception exception
= { };
6849 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6852 case -NFS4ERR_WRONGSEC
:
6853 case -NFS4ERR_NOTSUPP
:
6856 err
= nfs4_handle_exception(server
, err
, &exception
);
6858 } while (exception
.retry
);
6864 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6865 struct nfs_fsinfo
*info
)
6869 rpc_authflavor_t flavor
;
6870 struct nfs4_secinfo_flavors
*flavors
;
6872 page
= alloc_page(GFP_KERNEL
);
6878 flavors
= page_address(page
);
6879 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6882 * Fall back on "guess and check" method if
6883 * the server doesn't support SECINFO_NO_NAME
6885 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6886 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6892 flavor
= nfs_find_best_sec(flavors
);
6894 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6904 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6907 struct nfs41_test_stateid_args args
= {
6910 struct nfs41_test_stateid_res res
;
6911 struct rpc_message msg
= {
6912 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6917 dprintk("NFS call test_stateid %p\n", stateid
);
6918 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6919 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6920 if (status
!= NFS_OK
) {
6921 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6924 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6929 * nfs41_test_stateid - perform a TEST_STATEID operation
6931 * @server: server / transport on which to perform the operation
6932 * @stateid: state ID to test
6934 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6935 * Otherwise a negative NFS4ERR value is returned if the operation
6936 * failed or the state ID is not currently valid.
6938 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6940 struct nfs4_exception exception
= { };
6943 err
= _nfs41_test_stateid(server
, stateid
);
6944 if (err
!= -NFS4ERR_DELAY
)
6946 nfs4_handle_exception(server
, err
, &exception
);
6947 } while (exception
.retry
);
6951 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6953 struct nfs41_free_stateid_args args
= {
6956 struct nfs41_free_stateid_res res
;
6957 struct rpc_message msg
= {
6958 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6964 dprintk("NFS call free_stateid %p\n", stateid
);
6965 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6966 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6967 &args
.seq_args
, &res
.seq_res
, 1);
6968 dprintk("NFS reply free_stateid: %d\n", status
);
6973 * nfs41_free_stateid - perform a FREE_STATEID operation
6975 * @server: server / transport on which to perform the operation
6976 * @stateid: state ID to release
6978 * Returns NFS_OK if the server freed "stateid". Otherwise a
6979 * negative NFS4ERR value is returned.
6981 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6983 struct nfs4_exception exception
= { };
6986 err
= _nfs4_free_stateid(server
, stateid
);
6987 if (err
!= -NFS4ERR_DELAY
)
6989 nfs4_handle_exception(server
, err
, &exception
);
6990 } while (exception
.retry
);
6994 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6995 const nfs4_stateid
*s2
)
6997 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
7000 if (s1
->seqid
== s2
->seqid
)
7002 if (s1
->seqid
== 0 || s2
->seqid
== 0)
7008 #endif /* CONFIG_NFS_V4_1 */
7010 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
7011 const nfs4_stateid
*s2
)
7013 return nfs4_stateid_match(s1
, s2
);
7017 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
7018 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7019 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7020 .recover_open
= nfs4_open_reclaim
,
7021 .recover_lock
= nfs4_lock_reclaim
,
7022 .establish_clid
= nfs4_init_clientid
,
7023 .get_clid_cred
= nfs4_get_setclientid_cred
,
7024 .detect_trunking
= nfs40_discover_server_trunking
,
7027 #if defined(CONFIG_NFS_V4_1)
7028 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
7029 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7030 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7031 .recover_open
= nfs4_open_reclaim
,
7032 .recover_lock
= nfs4_lock_reclaim
,
7033 .establish_clid
= nfs41_init_clientid
,
7034 .get_clid_cred
= nfs4_get_exchange_id_cred
,
7035 .reclaim_complete
= nfs41_proc_reclaim_complete
,
7036 .detect_trunking
= nfs41_discover_server_trunking
,
7038 #endif /* CONFIG_NFS_V4_1 */
7040 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
7041 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7042 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7043 .recover_open
= nfs4_open_expired
,
7044 .recover_lock
= nfs4_lock_expired
,
7045 .establish_clid
= nfs4_init_clientid
,
7046 .get_clid_cred
= nfs4_get_setclientid_cred
,
7049 #if defined(CONFIG_NFS_V4_1)
7050 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
7051 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7052 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7053 .recover_open
= nfs41_open_expired
,
7054 .recover_lock
= nfs41_lock_expired
,
7055 .establish_clid
= nfs41_init_clientid
,
7056 .get_clid_cred
= nfs4_get_exchange_id_cred
,
7058 #endif /* CONFIG_NFS_V4_1 */
7060 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
7061 .sched_state_renewal
= nfs4_proc_async_renew
,
7062 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
7063 .renew_lease
= nfs4_proc_renew
,
7066 #if defined(CONFIG_NFS_V4_1)
7067 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
7068 .sched_state_renewal
= nfs41_proc_async_sequence
,
7069 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
7070 .renew_lease
= nfs4_proc_sequence
,
7074 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
7076 .call_sync
= _nfs4_call_sync
,
7077 .match_stateid
= nfs4_match_stateid
,
7078 .find_root_sec
= nfs4_find_root_sec
,
7079 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
7080 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
7081 .state_renewal_ops
= &nfs40_state_renewal_ops
,
7084 #if defined(CONFIG_NFS_V4_1)
7085 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
7087 .call_sync
= _nfs4_call_sync_session
,
7088 .match_stateid
= nfs41_match_stateid
,
7089 .find_root_sec
= nfs41_find_root_sec
,
7090 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7091 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7092 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7096 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
7097 [0] = &nfs_v4_0_minor_ops
,
7098 #if defined(CONFIG_NFS_V4_1)
7099 [1] = &nfs_v4_1_minor_ops
,
7103 const struct inode_operations nfs4_dir_inode_operations
= {
7104 .create
= nfs_create
,
7105 .lookup
= nfs_lookup
,
7106 .atomic_open
= nfs_atomic_open
,
7108 .unlink
= nfs_unlink
,
7109 .symlink
= nfs_symlink
,
7113 .rename
= nfs_rename
,
7114 .permission
= nfs_permission
,
7115 .getattr
= nfs_getattr
,
7116 .setattr
= nfs_setattr
,
7117 .getxattr
= generic_getxattr
,
7118 .setxattr
= generic_setxattr
,
7119 .listxattr
= generic_listxattr
,
7120 .removexattr
= generic_removexattr
,
7123 static const struct inode_operations nfs4_file_inode_operations
= {
7124 .permission
= nfs_permission
,
7125 .getattr
= nfs_getattr
,
7126 .setattr
= nfs_setattr
,
7127 .getxattr
= generic_getxattr
,
7128 .setxattr
= generic_setxattr
,
7129 .listxattr
= generic_listxattr
,
7130 .removexattr
= generic_removexattr
,
7133 const struct nfs_rpc_ops nfs_v4_clientops
= {
7134 .version
= 4, /* protocol version */
7135 .dentry_ops
= &nfs4_dentry_operations
,
7136 .dir_inode_ops
= &nfs4_dir_inode_operations
,
7137 .file_inode_ops
= &nfs4_file_inode_operations
,
7138 .file_ops
= &nfs4_file_operations
,
7139 .getroot
= nfs4_proc_get_root
,
7140 .submount
= nfs4_submount
,
7141 .try_mount
= nfs4_try_mount
,
7142 .getattr
= nfs4_proc_getattr
,
7143 .setattr
= nfs4_proc_setattr
,
7144 .lookup
= nfs4_proc_lookup
,
7145 .access
= nfs4_proc_access
,
7146 .readlink
= nfs4_proc_readlink
,
7147 .create
= nfs4_proc_create
,
7148 .remove
= nfs4_proc_remove
,
7149 .unlink_setup
= nfs4_proc_unlink_setup
,
7150 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
7151 .unlink_done
= nfs4_proc_unlink_done
,
7152 .rename
= nfs4_proc_rename
,
7153 .rename_setup
= nfs4_proc_rename_setup
,
7154 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
7155 .rename_done
= nfs4_proc_rename_done
,
7156 .link
= nfs4_proc_link
,
7157 .symlink
= nfs4_proc_symlink
,
7158 .mkdir
= nfs4_proc_mkdir
,
7159 .rmdir
= nfs4_proc_remove
,
7160 .readdir
= nfs4_proc_readdir
,
7161 .mknod
= nfs4_proc_mknod
,
7162 .statfs
= nfs4_proc_statfs
,
7163 .fsinfo
= nfs4_proc_fsinfo
,
7164 .pathconf
= nfs4_proc_pathconf
,
7165 .set_capabilities
= nfs4_server_capabilities
,
7166 .decode_dirent
= nfs4_decode_dirent
,
7167 .read_setup
= nfs4_proc_read_setup
,
7168 .read_pageio_init
= pnfs_pageio_init_read
,
7169 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
7170 .read_done
= nfs4_read_done
,
7171 .write_setup
= nfs4_proc_write_setup
,
7172 .write_pageio_init
= pnfs_pageio_init_write
,
7173 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
7174 .write_done
= nfs4_write_done
,
7175 .commit_setup
= nfs4_proc_commit_setup
,
7176 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
7177 .commit_done
= nfs4_commit_done
,
7178 .lock
= nfs4_proc_lock
,
7179 .clear_acl_cache
= nfs4_zap_acl_attr
,
7180 .close_context
= nfs4_close_context
,
7181 .open_context
= nfs4_atomic_open
,
7182 .have_delegation
= nfs4_have_delegation
,
7183 .return_delegation
= nfs4_inode_return_delegation
,
7184 .alloc_client
= nfs4_alloc_client
,
7185 .init_client
= nfs4_init_client
,
7186 .free_client
= nfs4_free_client
,
7187 .create_server
= nfs4_create_server
,
7188 .clone_server
= nfs_clone_server
,
7191 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7192 .prefix
= XATTR_NAME_NFSV4_ACL
,
7193 .list
= nfs4_xattr_list_nfs4_acl
,
7194 .get
= nfs4_xattr_get_nfs4_acl
,
7195 .set
= nfs4_xattr_set_nfs4_acl
,
7198 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7199 &nfs4_xattr_nfs4_acl_handler
,