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/slab.h>
43 #include <linux/sunrpc/clnt.h>
44 #include <linux/nfs.h>
45 #include <linux/nfs4.h>
46 #include <linux/nfs_fs.h>
47 #include <linux/nfs_page.h>
48 #include <linux/namei.h>
49 #include <linux/mount.h>
50 #include <linux/module.h>
51 #include <linux/sunrpc/bc_xprt.h>
52 #include <linux/xattr.h>
53 #include <linux/utsname.h>
56 #include "delegation.h"
62 #define NFSDBG_FACILITY NFSDBG_PROC
64 #define NFS4_POLL_RETRY_MIN (HZ/10)
65 #define NFS4_POLL_RETRY_MAX (15*HZ)
67 #define NFS4_MAX_LOOP_ON_RECOVER (10)
70 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
71 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
72 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
73 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
74 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
75 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
76 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
77 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
78 struct nfs4_state
*state
);
80 /* Prevent leaks of NFSv4 errors into userland */
81 static int nfs4_map_errors(int err
)
86 case -NFS4ERR_RESOURCE
:
88 case -NFS4ERR_BADOWNER
:
89 case -NFS4ERR_BADNAME
:
92 dprintk("%s could not handle NFSv4 error %d\n",
100 * This is our standard bitmap for GETATTR requests.
102 const u32 nfs4_fattr_bitmap
[2] = {
104 | FATTR4_WORD0_CHANGE
107 | FATTR4_WORD0_FILEID
,
109 | FATTR4_WORD1_NUMLINKS
111 | FATTR4_WORD1_OWNER_GROUP
112 | FATTR4_WORD1_RAWDEV
113 | FATTR4_WORD1_SPACE_USED
114 | FATTR4_WORD1_TIME_ACCESS
115 | FATTR4_WORD1_TIME_METADATA
116 | FATTR4_WORD1_TIME_MODIFY
119 const u32 nfs4_statfs_bitmap
[2] = {
120 FATTR4_WORD0_FILES_AVAIL
121 | FATTR4_WORD0_FILES_FREE
122 | FATTR4_WORD0_FILES_TOTAL
,
123 FATTR4_WORD1_SPACE_AVAIL
124 | FATTR4_WORD1_SPACE_FREE
125 | FATTR4_WORD1_SPACE_TOTAL
128 const u32 nfs4_pathconf_bitmap
[2] = {
130 | FATTR4_WORD0_MAXNAME
,
134 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
135 | FATTR4_WORD0_MAXREAD
136 | FATTR4_WORD0_MAXWRITE
137 | FATTR4_WORD0_LEASE_TIME
,
138 FATTR4_WORD1_TIME_DELTA
139 | FATTR4_WORD1_FS_LAYOUT_TYPES
142 const u32 nfs4_fs_locations_bitmap
[2] = {
144 | FATTR4_WORD0_CHANGE
147 | FATTR4_WORD0_FILEID
148 | FATTR4_WORD0_FS_LOCATIONS
,
150 | FATTR4_WORD1_NUMLINKS
152 | FATTR4_WORD1_OWNER_GROUP
153 | FATTR4_WORD1_RAWDEV
154 | FATTR4_WORD1_SPACE_USED
155 | FATTR4_WORD1_TIME_ACCESS
156 | FATTR4_WORD1_TIME_METADATA
157 | FATTR4_WORD1_TIME_MODIFY
158 | FATTR4_WORD1_MOUNTED_ON_FILEID
161 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
162 struct nfs4_readdir_arg
*readdir
)
166 BUG_ON(readdir
->count
< 80);
168 readdir
->cookie
= cookie
;
169 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
174 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
179 * NFSv4 servers do not return entries for '.' and '..'
180 * Therefore, we fake these entries here. We let '.'
181 * have cookie 0 and '..' have cookie 1. Note that
182 * when talking to the server, we always send cookie 0
185 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
188 *p
++ = xdr_one
; /* next */
189 *p
++ = xdr_zero
; /* cookie, first word */
190 *p
++ = xdr_one
; /* cookie, second word */
191 *p
++ = xdr_one
; /* entry len */
192 memcpy(p
, ".\0\0\0", 4); /* entry */
194 *p
++ = xdr_one
; /* bitmap length */
195 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
196 *p
++ = htonl(8); /* attribute buffer length */
197 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
200 *p
++ = xdr_one
; /* next */
201 *p
++ = xdr_zero
; /* cookie, first word */
202 *p
++ = xdr_two
; /* cookie, second word */
203 *p
++ = xdr_two
; /* entry len */
204 memcpy(p
, "..\0\0", 4); /* entry */
206 *p
++ = xdr_one
; /* bitmap length */
207 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
208 *p
++ = htonl(8); /* attribute buffer length */
209 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
211 readdir
->pgbase
= (char *)p
- (char *)start
;
212 readdir
->count
-= readdir
->pgbase
;
213 kunmap_atomic(start
, KM_USER0
);
216 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
222 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
223 nfs_wait_bit_killable
, TASK_KILLABLE
);
227 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
234 *timeout
= NFS4_POLL_RETRY_MIN
;
235 if (*timeout
> NFS4_POLL_RETRY_MAX
)
236 *timeout
= NFS4_POLL_RETRY_MAX
;
237 schedule_timeout_killable(*timeout
);
238 if (fatal_signal_pending(current
))
244 /* This is the error handling routine for processes that are allowed
247 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
249 struct nfs_client
*clp
= server
->nfs_client
;
250 struct nfs4_state
*state
= exception
->state
;
253 exception
->retry
= 0;
257 case -NFS4ERR_ADMIN_REVOKED
:
258 case -NFS4ERR_BAD_STATEID
:
259 case -NFS4ERR_OPENMODE
:
262 nfs4_schedule_stateid_recovery(server
, state
);
263 goto wait_on_recovery
;
264 case -NFS4ERR_STALE_STATEID
:
265 case -NFS4ERR_STALE_CLIENTID
:
266 case -NFS4ERR_EXPIRED
:
267 nfs4_schedule_lease_recovery(clp
);
268 goto wait_on_recovery
;
269 #if defined(CONFIG_NFS_V4_1)
270 case -NFS4ERR_BADSESSION
:
271 case -NFS4ERR_BADSLOT
:
272 case -NFS4ERR_BAD_HIGH_SLOT
:
273 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
274 case -NFS4ERR_DEADSESSION
:
275 case -NFS4ERR_SEQ_FALSE_RETRY
:
276 case -NFS4ERR_SEQ_MISORDERED
:
277 dprintk("%s ERROR: %d Reset session\n", __func__
,
279 nfs4_schedule_session_recovery(clp
->cl_session
);
280 exception
->retry
= 1;
282 #endif /* defined(CONFIG_NFS_V4_1) */
283 case -NFS4ERR_FILE_OPEN
:
284 if (exception
->timeout
> HZ
) {
285 /* We have retried a decent amount, time to
294 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
297 case -NFS4ERR_OLD_STATEID
:
298 exception
->retry
= 1;
300 case -NFS4ERR_BADOWNER
:
301 /* The following works around a Linux server bug! */
302 case -NFS4ERR_BADNAME
:
303 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
304 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
305 exception
->retry
= 1;
306 printk(KERN_WARNING
"NFS: v4 server %s "
307 "does not accept raw "
309 "Reenabling the idmapper.\n",
310 server
->nfs_client
->cl_hostname
);
313 /* We failed to handle the error */
314 return nfs4_map_errors(ret
);
316 ret
= nfs4_wait_clnt_recover(clp
);
318 exception
->retry
= 1;
323 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
325 spin_lock(&clp
->cl_lock
);
326 if (time_before(clp
->cl_last_renewal
,timestamp
))
327 clp
->cl_last_renewal
= timestamp
;
328 spin_unlock(&clp
->cl_lock
);
331 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
333 do_renew_lease(server
->nfs_client
, timestamp
);
336 #if defined(CONFIG_NFS_V4_1)
339 * nfs4_free_slot - free a slot and efficiently update slot table.
341 * freeing a slot is trivially done by clearing its respective bit
343 * If the freed slotid equals highest_used_slotid we want to update it
344 * so that the server would be able to size down the slot table if needed,
345 * otherwise we know that the highest_used_slotid is still in use.
346 * When updating highest_used_slotid there may be "holes" in the bitmap
347 * so we need to scan down from highest_used_slotid to 0 looking for the now
348 * highest slotid in use.
349 * If none found, highest_used_slotid is set to -1.
351 * Must be called while holding tbl->slot_tbl_lock
354 nfs4_free_slot(struct nfs4_slot_table
*tbl
, struct nfs4_slot
*free_slot
)
356 int free_slotid
= free_slot
- tbl
->slots
;
357 int slotid
= free_slotid
;
359 BUG_ON(slotid
< 0 || slotid
>= NFS4_MAX_SLOT_TABLE
);
360 /* clear used bit in bitmap */
361 __clear_bit(slotid
, tbl
->used_slots
);
363 /* update highest_used_slotid when it is freed */
364 if (slotid
== tbl
->highest_used_slotid
) {
365 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
366 if (slotid
< tbl
->max_slots
)
367 tbl
->highest_used_slotid
= slotid
;
369 tbl
->highest_used_slotid
= -1;
371 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
372 free_slotid
, tbl
->highest_used_slotid
);
376 * Signal state manager thread if session fore channel is drained
378 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
380 struct rpc_task
*task
;
382 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
383 task
= rpc_wake_up_next(&ses
->fc_slot_table
.slot_tbl_waitq
);
385 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
389 if (ses
->fc_slot_table
.highest_used_slotid
!= -1)
392 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
393 complete(&ses
->fc_slot_table
.complete
);
397 * Signal state manager thread if session back channel is drained
399 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
401 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
402 ses
->bc_slot_table
.highest_used_slotid
!= -1)
404 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
405 complete(&ses
->bc_slot_table
.complete
);
408 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
410 struct nfs4_slot_table
*tbl
;
412 tbl
= &res
->sr_session
->fc_slot_table
;
414 /* just wake up the next guy waiting since
415 * we may have not consumed a slot after all */
416 dprintk("%s: No slot\n", __func__
);
420 spin_lock(&tbl
->slot_tbl_lock
);
421 nfs4_free_slot(tbl
, res
->sr_slot
);
422 nfs4_check_drain_fc_complete(res
->sr_session
);
423 spin_unlock(&tbl
->slot_tbl_lock
);
427 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
429 unsigned long timestamp
;
430 struct nfs_client
*clp
;
433 * sr_status remains 1 if an RPC level error occurred. The server
434 * may or may not have processed the sequence operation..
435 * Proceed as if the server received and processed the sequence
438 if (res
->sr_status
== 1)
439 res
->sr_status
= NFS_OK
;
441 /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */
445 /* Check the SEQUENCE operation status */
446 switch (res
->sr_status
) {
448 /* Update the slot's sequence and clientid lease timer */
449 ++res
->sr_slot
->seq_nr
;
450 timestamp
= res
->sr_renewal_time
;
451 clp
= res
->sr_session
->clp
;
452 do_renew_lease(clp
, timestamp
);
453 /* Check sequence flags */
454 if (res
->sr_status_flags
!= 0)
455 nfs4_schedule_lease_recovery(clp
);
458 /* The server detected a resend of the RPC call and
459 * returned NFS4ERR_DELAY as per Section 2.10.6.2
462 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
464 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
465 res
->sr_slot
->seq_nr
);
468 /* Just update the slot sequence no. */
469 ++res
->sr_slot
->seq_nr
;
472 /* The session may be reset by one of the error handlers. */
473 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
474 nfs41_sequence_free_slot(res
);
477 if (!rpc_restart_call(task
))
479 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
483 static int nfs4_sequence_done(struct rpc_task
*task
,
484 struct nfs4_sequence_res
*res
)
486 if (res
->sr_session
== NULL
)
488 return nfs41_sequence_done(task
, res
);
492 * nfs4_find_slot - efficiently look for a free slot
494 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
495 * If found, we mark the slot as used, update the highest_used_slotid,
496 * and respectively set up the sequence operation args.
497 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
499 * Note: must be called with under the slot_tbl_lock.
502 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
505 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
506 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
508 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
509 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
511 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
512 if (slotid
>= tbl
->max_slots
)
514 __set_bit(slotid
, tbl
->used_slots
);
515 if (slotid
> tbl
->highest_used_slotid
)
516 tbl
->highest_used_slotid
= slotid
;
519 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
520 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
524 int nfs41_setup_sequence(struct nfs4_session
*session
,
525 struct nfs4_sequence_args
*args
,
526 struct nfs4_sequence_res
*res
,
528 struct rpc_task
*task
)
530 struct nfs4_slot
*slot
;
531 struct nfs4_slot_table
*tbl
;
534 dprintk("--> %s\n", __func__
);
535 /* slot already allocated? */
536 if (res
->sr_slot
!= NULL
)
539 tbl
= &session
->fc_slot_table
;
541 spin_lock(&tbl
->slot_tbl_lock
);
542 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
543 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
545 * The state manager will wait until the slot table is empty.
546 * Schedule the reset thread
548 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
549 spin_unlock(&tbl
->slot_tbl_lock
);
550 dprintk("%s Schedule Session Reset\n", __func__
);
554 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
555 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
556 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
557 spin_unlock(&tbl
->slot_tbl_lock
);
558 dprintk("%s enforce FIFO order\n", __func__
);
562 slotid
= nfs4_find_slot(tbl
);
563 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
564 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
565 spin_unlock(&tbl
->slot_tbl_lock
);
566 dprintk("<-- %s: no free slots\n", __func__
);
569 spin_unlock(&tbl
->slot_tbl_lock
);
571 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
572 slot
= tbl
->slots
+ slotid
;
573 args
->sa_session
= session
;
574 args
->sa_slotid
= slotid
;
575 args
->sa_cache_this
= cache_reply
;
577 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
579 res
->sr_session
= session
;
581 res
->sr_renewal_time
= jiffies
;
582 res
->sr_status_flags
= 0;
584 * sr_status is only set in decode_sequence, and so will remain
585 * set to 1 if an rpc level failure occurs.
590 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
592 int nfs4_setup_sequence(const struct nfs_server
*server
,
593 struct nfs4_sequence_args
*args
,
594 struct nfs4_sequence_res
*res
,
596 struct rpc_task
*task
)
598 struct nfs4_session
*session
= nfs4_get_session(server
);
601 if (session
== NULL
) {
602 args
->sa_session
= NULL
;
603 res
->sr_session
= NULL
;
607 dprintk("--> %s clp %p session %p sr_slot %td\n",
608 __func__
, session
->clp
, session
, res
->sr_slot
?
609 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
611 ret
= nfs41_setup_sequence(session
, args
, res
, cache_reply
,
614 dprintk("<-- %s status=%d\n", __func__
, ret
);
618 struct nfs41_call_sync_data
{
619 const struct nfs_server
*seq_server
;
620 struct nfs4_sequence_args
*seq_args
;
621 struct nfs4_sequence_res
*seq_res
;
625 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
627 struct nfs41_call_sync_data
*data
= calldata
;
629 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
631 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
632 data
->seq_res
, data
->cache_reply
, task
))
634 rpc_call_start(task
);
637 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
639 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
640 nfs41_call_sync_prepare(task
, calldata
);
643 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
645 struct nfs41_call_sync_data
*data
= calldata
;
647 nfs41_sequence_done(task
, data
->seq_res
);
650 struct rpc_call_ops nfs41_call_sync_ops
= {
651 .rpc_call_prepare
= nfs41_call_sync_prepare
,
652 .rpc_call_done
= nfs41_call_sync_done
,
655 struct rpc_call_ops nfs41_call_priv_sync_ops
= {
656 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
657 .rpc_call_done
= nfs41_call_sync_done
,
660 static int nfs4_call_sync_sequence(struct nfs_server
*server
,
661 struct rpc_message
*msg
,
662 struct nfs4_sequence_args
*args
,
663 struct nfs4_sequence_res
*res
,
668 struct rpc_task
*task
;
669 struct nfs41_call_sync_data data
= {
670 .seq_server
= server
,
673 .cache_reply
= cache_reply
,
675 struct rpc_task_setup task_setup
= {
676 .rpc_client
= server
->client
,
678 .callback_ops
= &nfs41_call_sync_ops
,
679 .callback_data
= &data
684 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
685 task
= rpc_run_task(&task_setup
);
689 ret
= task
->tk_status
;
695 int _nfs4_call_sync_session(struct nfs_server
*server
,
696 struct rpc_message
*msg
,
697 struct nfs4_sequence_args
*args
,
698 struct nfs4_sequence_res
*res
,
701 return nfs4_call_sync_sequence(server
, msg
, args
, res
, cache_reply
, 0);
705 static int nfs4_sequence_done(struct rpc_task
*task
,
706 struct nfs4_sequence_res
*res
)
710 #endif /* CONFIG_NFS_V4_1 */
712 int _nfs4_call_sync(struct nfs_server
*server
,
713 struct rpc_message
*msg
,
714 struct nfs4_sequence_args
*args
,
715 struct nfs4_sequence_res
*res
,
718 args
->sa_session
= res
->sr_session
= NULL
;
719 return rpc_call_sync(server
->client
, msg
, 0);
722 #define nfs4_call_sync(server, msg, args, res, cache_reply) \
723 (server)->nfs_client->cl_mvops->call_sync((server), (msg), &(args)->seq_args, \
724 &(res)->seq_res, (cache_reply))
726 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
728 struct nfs_inode
*nfsi
= NFS_I(dir
);
730 spin_lock(&dir
->i_lock
);
731 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
732 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
733 nfs_force_lookup_revalidate(dir
);
734 nfsi
->change_attr
= cinfo
->after
;
735 spin_unlock(&dir
->i_lock
);
738 struct nfs4_opendata
{
740 struct nfs_openargs o_arg
;
741 struct nfs_openres o_res
;
742 struct nfs_open_confirmargs c_arg
;
743 struct nfs_open_confirmres c_res
;
744 struct nfs_fattr f_attr
;
745 struct nfs_fattr dir_attr
;
748 struct nfs4_state_owner
*owner
;
749 struct nfs4_state
*state
;
751 unsigned long timestamp
;
752 unsigned int rpc_done
: 1;
758 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
760 p
->o_res
.f_attr
= &p
->f_attr
;
761 p
->o_res
.dir_attr
= &p
->dir_attr
;
762 p
->o_res
.seqid
= p
->o_arg
.seqid
;
763 p
->c_res
.seqid
= p
->c_arg
.seqid
;
764 p
->o_res
.server
= p
->o_arg
.server
;
765 nfs_fattr_init(&p
->f_attr
);
766 nfs_fattr_init(&p
->dir_attr
);
769 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
770 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
771 const struct iattr
*attrs
,
774 struct dentry
*parent
= dget_parent(path
->dentry
);
775 struct inode
*dir
= parent
->d_inode
;
776 struct nfs_server
*server
= NFS_SERVER(dir
);
777 struct nfs4_opendata
*p
;
779 p
= kzalloc(sizeof(*p
), gfp_mask
);
782 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
783 if (p
->o_arg
.seqid
== NULL
)
789 atomic_inc(&sp
->so_count
);
790 p
->o_arg
.fh
= NFS_FH(dir
);
791 p
->o_arg
.open_flags
= flags
;
792 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
793 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
794 p
->o_arg
.id
= sp
->so_owner_id
.id
;
795 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
796 p
->o_arg
.server
= server
;
797 p
->o_arg
.bitmask
= server
->attr_bitmask
;
798 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
799 if (flags
& O_CREAT
) {
802 p
->o_arg
.u
.attrs
= &p
->attrs
;
803 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
804 s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
808 p
->c_arg
.fh
= &p
->o_res
.fh
;
809 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
810 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
811 nfs4_init_opendata_res(p
);
821 static void nfs4_opendata_free(struct kref
*kref
)
823 struct nfs4_opendata
*p
= container_of(kref
,
824 struct nfs4_opendata
, kref
);
826 nfs_free_seqid(p
->o_arg
.seqid
);
827 if (p
->state
!= NULL
)
828 nfs4_put_open_state(p
->state
);
829 nfs4_put_state_owner(p
->owner
);
835 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
838 kref_put(&p
->kref
, nfs4_opendata_free
);
841 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
845 ret
= rpc_wait_for_completion_task(task
);
849 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
853 if (open_mode
& O_EXCL
)
855 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
857 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
858 && state
->n_rdonly
!= 0;
861 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
862 && state
->n_wronly
!= 0;
864 case FMODE_READ
|FMODE_WRITE
:
865 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
866 && state
->n_rdwr
!= 0;
872 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
874 if ((delegation
->type
& fmode
) != fmode
)
876 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
878 nfs_mark_delegation_referenced(delegation
);
882 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
891 case FMODE_READ
|FMODE_WRITE
:
894 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
897 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
899 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
900 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
901 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
904 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
907 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
909 case FMODE_READ
|FMODE_WRITE
:
910 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
914 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
916 write_seqlock(&state
->seqlock
);
917 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
918 write_sequnlock(&state
->seqlock
);
921 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
924 * Protect the call to nfs4_state_set_mode_locked and
925 * serialise the stateid update
927 write_seqlock(&state
->seqlock
);
928 if (deleg_stateid
!= NULL
) {
929 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
930 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
932 if (open_stateid
!= NULL
)
933 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
934 write_sequnlock(&state
->seqlock
);
935 spin_lock(&state
->owner
->so_lock
);
936 update_open_stateflags(state
, fmode
);
937 spin_unlock(&state
->owner
->so_lock
);
940 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
942 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
943 struct nfs_delegation
*deleg_cur
;
946 fmode
&= (FMODE_READ
|FMODE_WRITE
);
949 deleg_cur
= rcu_dereference(nfsi
->delegation
);
950 if (deleg_cur
== NULL
)
953 spin_lock(&deleg_cur
->lock
);
954 if (nfsi
->delegation
!= deleg_cur
||
955 (deleg_cur
->type
& fmode
) != fmode
)
956 goto no_delegation_unlock
;
958 if (delegation
== NULL
)
959 delegation
= &deleg_cur
->stateid
;
960 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
961 goto no_delegation_unlock
;
963 nfs_mark_delegation_referenced(deleg_cur
);
964 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
966 no_delegation_unlock
:
967 spin_unlock(&deleg_cur
->lock
);
971 if (!ret
&& open_stateid
!= NULL
) {
972 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
980 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
982 struct nfs_delegation
*delegation
;
985 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
986 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
991 nfs_inode_return_delegation(inode
);
994 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
996 struct nfs4_state
*state
= opendata
->state
;
997 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
998 struct nfs_delegation
*delegation
;
999 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
1000 fmode_t fmode
= opendata
->o_arg
.fmode
;
1001 nfs4_stateid stateid
;
1005 if (can_open_cached(state
, fmode
, open_mode
)) {
1006 spin_lock(&state
->owner
->so_lock
);
1007 if (can_open_cached(state
, fmode
, open_mode
)) {
1008 update_open_stateflags(state
, fmode
);
1009 spin_unlock(&state
->owner
->so_lock
);
1010 goto out_return_state
;
1012 spin_unlock(&state
->owner
->so_lock
);
1015 delegation
= rcu_dereference(nfsi
->delegation
);
1016 if (delegation
== NULL
||
1017 !can_open_delegated(delegation
, fmode
)) {
1021 /* Save the delegation */
1022 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
1024 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1029 /* Try to update the stateid using the delegation */
1030 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1031 goto out_return_state
;
1034 return ERR_PTR(ret
);
1036 atomic_inc(&state
->count
);
1040 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1042 struct inode
*inode
;
1043 struct nfs4_state
*state
= NULL
;
1044 struct nfs_delegation
*delegation
;
1047 if (!data
->rpc_done
) {
1048 state
= nfs4_try_open_cached(data
);
1053 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1055 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1056 ret
= PTR_ERR(inode
);
1060 state
= nfs4_get_open_state(inode
, data
->owner
);
1063 if (data
->o_res
.delegation_type
!= 0) {
1064 int delegation_flags
= 0;
1067 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1069 delegation_flags
= delegation
->flags
;
1071 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1072 nfs_inode_set_delegation(state
->inode
,
1073 data
->owner
->so_cred
,
1076 nfs_inode_reclaim_delegation(state
->inode
,
1077 data
->owner
->so_cred
,
1081 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1089 return ERR_PTR(ret
);
1092 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1094 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1095 struct nfs_open_context
*ctx
;
1097 spin_lock(&state
->inode
->i_lock
);
1098 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1099 if (ctx
->state
!= state
)
1101 get_nfs_open_context(ctx
);
1102 spin_unlock(&state
->inode
->i_lock
);
1105 spin_unlock(&state
->inode
->i_lock
);
1106 return ERR_PTR(-ENOENT
);
1109 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1111 struct nfs4_opendata
*opendata
;
1113 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1114 if (opendata
== NULL
)
1115 return ERR_PTR(-ENOMEM
);
1116 opendata
->state
= state
;
1117 atomic_inc(&state
->count
);
1121 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1123 struct nfs4_state
*newstate
;
1126 opendata
->o_arg
.open_flags
= 0;
1127 opendata
->o_arg
.fmode
= fmode
;
1128 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1129 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1130 nfs4_init_opendata_res(opendata
);
1131 ret
= _nfs4_recover_proc_open(opendata
);
1134 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1135 if (IS_ERR(newstate
))
1136 return PTR_ERR(newstate
);
1137 nfs4_close_state(&opendata
->path
, newstate
, fmode
);
1142 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1144 struct nfs4_state
*newstate
;
1147 /* memory barrier prior to reading state->n_* */
1148 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1150 if (state
->n_rdwr
!= 0) {
1151 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1152 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1155 if (newstate
!= state
)
1158 if (state
->n_wronly
!= 0) {
1159 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1160 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1163 if (newstate
!= state
)
1166 if (state
->n_rdonly
!= 0) {
1167 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1168 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1171 if (newstate
!= state
)
1175 * We may have performed cached opens for all three recoveries.
1176 * Check if we need to update the current stateid.
1178 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1179 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1180 write_seqlock(&state
->seqlock
);
1181 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1182 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1183 write_sequnlock(&state
->seqlock
);
1190 * reclaim state on the server after a reboot.
1192 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1194 struct nfs_delegation
*delegation
;
1195 struct nfs4_opendata
*opendata
;
1196 fmode_t delegation_type
= 0;
1199 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1200 if (IS_ERR(opendata
))
1201 return PTR_ERR(opendata
);
1202 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1203 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1205 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1206 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1207 delegation_type
= delegation
->type
;
1209 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1210 status
= nfs4_open_recover(opendata
, state
);
1211 nfs4_opendata_put(opendata
);
1215 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1217 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1218 struct nfs4_exception exception
= { };
1221 err
= _nfs4_do_open_reclaim(ctx
, state
);
1222 if (err
!= -NFS4ERR_DELAY
)
1224 nfs4_handle_exception(server
, err
, &exception
);
1225 } while (exception
.retry
);
1229 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1231 struct nfs_open_context
*ctx
;
1234 ctx
= nfs4_state_find_open_context(state
);
1236 return PTR_ERR(ctx
);
1237 ret
= nfs4_do_open_reclaim(ctx
, state
);
1238 put_nfs_open_context(ctx
);
1242 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1244 struct nfs4_opendata
*opendata
;
1247 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1248 if (IS_ERR(opendata
))
1249 return PTR_ERR(opendata
);
1250 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1251 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1252 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1253 ret
= nfs4_open_recover(opendata
, state
);
1254 nfs4_opendata_put(opendata
);
1258 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1260 struct nfs4_exception exception
= { };
1261 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1264 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1270 case -NFS4ERR_BADSESSION
:
1271 case -NFS4ERR_BADSLOT
:
1272 case -NFS4ERR_BAD_HIGH_SLOT
:
1273 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1274 case -NFS4ERR_DEADSESSION
:
1275 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
1277 case -NFS4ERR_STALE_CLIENTID
:
1278 case -NFS4ERR_STALE_STATEID
:
1279 case -NFS4ERR_EXPIRED
:
1280 /* Don't recall a delegation if it was lost */
1281 nfs4_schedule_lease_recovery(server
->nfs_client
);
1285 * The show must go on: exit, but mark the
1286 * stateid as needing recovery.
1288 case -NFS4ERR_ADMIN_REVOKED
:
1289 case -NFS4ERR_BAD_STATEID
:
1290 nfs4_schedule_stateid_recovery(server
, state
);
1293 * User RPCSEC_GSS context has expired.
1294 * We cannot recover this stateid now, so
1295 * skip it and allow recovery thread to
1302 err
= nfs4_handle_exception(server
, err
, &exception
);
1303 } while (exception
.retry
);
1308 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1310 struct nfs4_opendata
*data
= calldata
;
1312 data
->rpc_status
= task
->tk_status
;
1313 if (data
->rpc_status
== 0) {
1314 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1315 sizeof(data
->o_res
.stateid
.data
));
1316 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1317 renew_lease(data
->o_res
.server
, data
->timestamp
);
1322 static void nfs4_open_confirm_release(void *calldata
)
1324 struct nfs4_opendata
*data
= calldata
;
1325 struct nfs4_state
*state
= NULL
;
1327 /* If this request hasn't been cancelled, do nothing */
1328 if (data
->cancelled
== 0)
1330 /* In case of error, no cleanup! */
1331 if (!data
->rpc_done
)
1333 state
= nfs4_opendata_to_nfs4_state(data
);
1335 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1337 nfs4_opendata_put(data
);
1340 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1341 .rpc_call_done
= nfs4_open_confirm_done
,
1342 .rpc_release
= nfs4_open_confirm_release
,
1346 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1348 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1350 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1351 struct rpc_task
*task
;
1352 struct rpc_message msg
= {
1353 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1354 .rpc_argp
= &data
->c_arg
,
1355 .rpc_resp
= &data
->c_res
,
1356 .rpc_cred
= data
->owner
->so_cred
,
1358 struct rpc_task_setup task_setup_data
= {
1359 .rpc_client
= server
->client
,
1360 .rpc_message
= &msg
,
1361 .callback_ops
= &nfs4_open_confirm_ops
,
1362 .callback_data
= data
,
1363 .workqueue
= nfsiod_workqueue
,
1364 .flags
= RPC_TASK_ASYNC
,
1368 kref_get(&data
->kref
);
1370 data
->rpc_status
= 0;
1371 data
->timestamp
= jiffies
;
1372 task
= rpc_run_task(&task_setup_data
);
1374 return PTR_ERR(task
);
1375 status
= nfs4_wait_for_completion_rpc_task(task
);
1377 data
->cancelled
= 1;
1380 status
= data
->rpc_status
;
1385 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1387 struct nfs4_opendata
*data
= calldata
;
1388 struct nfs4_state_owner
*sp
= data
->owner
;
1390 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1393 * Check if we still need to send an OPEN call, or if we can use
1394 * a delegation instead.
1396 if (data
->state
!= NULL
) {
1397 struct nfs_delegation
*delegation
;
1399 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1402 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1403 if (delegation
!= NULL
&&
1404 test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) == 0) {
1410 /* Update sequence id. */
1411 data
->o_arg
.id
= sp
->so_owner_id
.id
;
1412 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1413 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1414 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1415 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1417 data
->timestamp
= jiffies
;
1418 if (nfs4_setup_sequence(data
->o_arg
.server
,
1419 &data
->o_arg
.seq_args
,
1420 &data
->o_res
.seq_res
, 1, task
))
1422 rpc_call_start(task
);
1425 task
->tk_action
= NULL
;
1429 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1431 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1432 nfs4_open_prepare(task
, calldata
);
1435 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1437 struct nfs4_opendata
*data
= calldata
;
1439 data
->rpc_status
= task
->tk_status
;
1441 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1444 if (task
->tk_status
== 0) {
1445 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1449 data
->rpc_status
= -ELOOP
;
1452 data
->rpc_status
= -EISDIR
;
1455 data
->rpc_status
= -ENOTDIR
;
1457 renew_lease(data
->o_res
.server
, data
->timestamp
);
1458 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1459 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1464 static void nfs4_open_release(void *calldata
)
1466 struct nfs4_opendata
*data
= calldata
;
1467 struct nfs4_state
*state
= NULL
;
1469 /* If this request hasn't been cancelled, do nothing */
1470 if (data
->cancelled
== 0)
1472 /* In case of error, no cleanup! */
1473 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1475 /* In case we need an open_confirm, no cleanup! */
1476 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1478 state
= nfs4_opendata_to_nfs4_state(data
);
1480 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1482 nfs4_opendata_put(data
);
1485 static const struct rpc_call_ops nfs4_open_ops
= {
1486 .rpc_call_prepare
= nfs4_open_prepare
,
1487 .rpc_call_done
= nfs4_open_done
,
1488 .rpc_release
= nfs4_open_release
,
1491 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1492 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1493 .rpc_call_done
= nfs4_open_done
,
1494 .rpc_release
= nfs4_open_release
,
1497 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1499 struct inode
*dir
= data
->dir
->d_inode
;
1500 struct nfs_server
*server
= NFS_SERVER(dir
);
1501 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1502 struct nfs_openres
*o_res
= &data
->o_res
;
1503 struct rpc_task
*task
;
1504 struct rpc_message msg
= {
1505 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1508 .rpc_cred
= data
->owner
->so_cred
,
1510 struct rpc_task_setup task_setup_data
= {
1511 .rpc_client
= server
->client
,
1512 .rpc_message
= &msg
,
1513 .callback_ops
= &nfs4_open_ops
,
1514 .callback_data
= data
,
1515 .workqueue
= nfsiod_workqueue
,
1516 .flags
= RPC_TASK_ASYNC
,
1520 kref_get(&data
->kref
);
1522 data
->rpc_status
= 0;
1523 data
->cancelled
= 0;
1525 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1526 task
= rpc_run_task(&task_setup_data
);
1528 return PTR_ERR(task
);
1529 status
= nfs4_wait_for_completion_rpc_task(task
);
1531 data
->cancelled
= 1;
1534 status
= data
->rpc_status
;
1540 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1542 struct inode
*dir
= data
->dir
->d_inode
;
1543 struct nfs_openres
*o_res
= &data
->o_res
;
1546 status
= nfs4_run_open_task(data
, 1);
1547 if (status
!= 0 || !data
->rpc_done
)
1550 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1552 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1553 status
= _nfs4_proc_open_confirm(data
);
1562 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1564 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1566 struct inode
*dir
= data
->dir
->d_inode
;
1567 struct nfs_server
*server
= NFS_SERVER(dir
);
1568 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1569 struct nfs_openres
*o_res
= &data
->o_res
;
1572 status
= nfs4_run_open_task(data
, 0);
1573 if (status
!= 0 || !data
->rpc_done
)
1576 if (o_arg
->open_flags
& O_CREAT
) {
1577 update_changeattr(dir
, &o_res
->cinfo
);
1578 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1580 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1581 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1582 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1583 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1584 status
= _nfs4_proc_open_confirm(data
);
1588 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1589 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1593 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1598 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1599 ret
= nfs4_wait_clnt_recover(clp
);
1602 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1603 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1605 nfs4_schedule_state_manager(clp
);
1611 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1613 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1618 * reclaim state on the server after a network partition.
1619 * Assumes caller holds the appropriate lock
1621 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1623 struct nfs4_opendata
*opendata
;
1626 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1627 if (IS_ERR(opendata
))
1628 return PTR_ERR(opendata
);
1629 ret
= nfs4_open_recover(opendata
, state
);
1631 d_drop(ctx
->path
.dentry
);
1632 nfs4_opendata_put(opendata
);
1636 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1638 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1639 struct nfs4_exception exception
= { };
1643 err
= _nfs4_open_expired(ctx
, state
);
1647 case -NFS4ERR_GRACE
:
1648 case -NFS4ERR_DELAY
:
1649 nfs4_handle_exception(server
, err
, &exception
);
1652 } while (exception
.retry
);
1657 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1659 struct nfs_open_context
*ctx
;
1662 ctx
= nfs4_state_find_open_context(state
);
1664 return PTR_ERR(ctx
);
1665 ret
= nfs4_do_open_expired(ctx
, state
);
1666 put_nfs_open_context(ctx
);
1671 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1672 * fields corresponding to attributes that were used to store the verifier.
1673 * Make sure we clobber those fields in the later setattr call
1675 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1677 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1678 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1679 sattr
->ia_valid
|= ATTR_ATIME
;
1681 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1682 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1683 sattr
->ia_valid
|= ATTR_MTIME
;
1687 * Returns a referenced nfs4_state
1689 static int _nfs4_do_open(struct inode
*dir
, struct path
*path
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
1691 struct nfs4_state_owner
*sp
;
1692 struct nfs4_state
*state
= NULL
;
1693 struct nfs_server
*server
= NFS_SERVER(dir
);
1694 struct nfs4_opendata
*opendata
;
1697 /* Protect against reboot recovery conflicts */
1699 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1700 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1703 status
= nfs4_recover_expired_lease(server
);
1705 goto err_put_state_owner
;
1706 if (path
->dentry
->d_inode
!= NULL
)
1707 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, fmode
);
1709 opendata
= nfs4_opendata_alloc(path
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1710 if (opendata
== NULL
)
1711 goto err_put_state_owner
;
1713 if (path
->dentry
->d_inode
!= NULL
)
1714 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1716 status
= _nfs4_proc_open(opendata
);
1718 goto err_opendata_put
;
1720 state
= nfs4_opendata_to_nfs4_state(opendata
);
1721 status
= PTR_ERR(state
);
1723 goto err_opendata_put
;
1724 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1725 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1727 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1728 nfs4_exclusive_attrset(opendata
, sattr
);
1730 nfs_fattr_init(opendata
->o_res
.f_attr
);
1731 status
= nfs4_do_setattr(state
->inode
, cred
,
1732 opendata
->o_res
.f_attr
, sattr
,
1735 nfs_setattr_update_inode(state
->inode
, sattr
);
1736 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1738 nfs4_opendata_put(opendata
);
1739 nfs4_put_state_owner(sp
);
1743 nfs4_opendata_put(opendata
);
1744 err_put_state_owner
:
1745 nfs4_put_state_owner(sp
);
1752 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct path
*path
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1754 struct nfs4_exception exception
= { };
1755 struct nfs4_state
*res
;
1759 status
= _nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
, &res
);
1762 /* NOTE: BAD_SEQID means the server and client disagree about the
1763 * book-keeping w.r.t. state-changing operations
1764 * (OPEN/CLOSE/LOCK/LOCKU...)
1765 * It is actually a sign of a bug on the client or on the server.
1767 * If we receive a BAD_SEQID error in the particular case of
1768 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1769 * have unhashed the old state_owner for us, and that we can
1770 * therefore safely retry using a new one. We should still warn
1771 * the user though...
1773 if (status
== -NFS4ERR_BAD_SEQID
) {
1774 printk(KERN_WARNING
"NFS: v4 server %s "
1775 " returned a bad sequence-id error!\n",
1776 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1777 exception
.retry
= 1;
1781 * BAD_STATEID on OPEN means that the server cancelled our
1782 * state before it received the OPEN_CONFIRM.
1783 * Recover by retrying the request as per the discussion
1784 * on Page 181 of RFC3530.
1786 if (status
== -NFS4ERR_BAD_STATEID
) {
1787 exception
.retry
= 1;
1790 if (status
== -EAGAIN
) {
1791 /* We must have found a delegation */
1792 exception
.retry
= 1;
1795 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1796 status
, &exception
));
1797 } while (exception
.retry
);
1801 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1802 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1803 struct nfs4_state
*state
)
1805 struct nfs_server
*server
= NFS_SERVER(inode
);
1806 struct nfs_setattrargs arg
= {
1807 .fh
= NFS_FH(inode
),
1810 .bitmask
= server
->attr_bitmask
,
1812 struct nfs_setattrres res
= {
1816 struct rpc_message msg
= {
1817 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1822 unsigned long timestamp
= jiffies
;
1825 nfs_fattr_init(fattr
);
1827 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1828 /* Use that stateid */
1829 } else if (state
!= NULL
) {
1830 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
, current
->tgid
);
1832 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1834 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
1835 if (status
== 0 && state
!= NULL
)
1836 renew_lease(server
, timestamp
);
1840 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1841 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1842 struct nfs4_state
*state
)
1844 struct nfs_server
*server
= NFS_SERVER(inode
);
1845 struct nfs4_exception exception
= { };
1848 err
= nfs4_handle_exception(server
,
1849 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1851 } while (exception
.retry
);
1855 struct nfs4_closedata
{
1857 struct inode
*inode
;
1858 struct nfs4_state
*state
;
1859 struct nfs_closeargs arg
;
1860 struct nfs_closeres res
;
1861 struct nfs_fattr fattr
;
1862 unsigned long timestamp
;
1867 static void nfs4_free_closedata(void *data
)
1869 struct nfs4_closedata
*calldata
= data
;
1870 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1873 pnfs_roc_release(calldata
->state
->inode
);
1874 nfs4_put_open_state(calldata
->state
);
1875 nfs_free_seqid(calldata
->arg
.seqid
);
1876 nfs4_put_state_owner(sp
);
1877 path_put(&calldata
->path
);
1881 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
1884 spin_lock(&state
->owner
->so_lock
);
1885 if (!(fmode
& FMODE_READ
))
1886 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1887 if (!(fmode
& FMODE_WRITE
))
1888 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1889 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1890 spin_unlock(&state
->owner
->so_lock
);
1893 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1895 struct nfs4_closedata
*calldata
= data
;
1896 struct nfs4_state
*state
= calldata
->state
;
1897 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1899 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
1901 /* hmm. we are done with the inode, and in the process of freeing
1902 * the state_owner. we keep this around to process errors
1904 switch (task
->tk_status
) {
1907 pnfs_roc_set_barrier(state
->inode
,
1908 calldata
->roc_barrier
);
1909 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1910 renew_lease(server
, calldata
->timestamp
);
1911 nfs4_close_clear_stateid_flags(state
,
1912 calldata
->arg
.fmode
);
1914 case -NFS4ERR_STALE_STATEID
:
1915 case -NFS4ERR_OLD_STATEID
:
1916 case -NFS4ERR_BAD_STATEID
:
1917 case -NFS4ERR_EXPIRED
:
1918 if (calldata
->arg
.fmode
== 0)
1921 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
1922 rpc_restart_call_prepare(task
);
1924 nfs_release_seqid(calldata
->arg
.seqid
);
1925 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1928 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1930 struct nfs4_closedata
*calldata
= data
;
1931 struct nfs4_state
*state
= calldata
->state
;
1934 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1937 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1938 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
1939 spin_lock(&state
->owner
->so_lock
);
1940 /* Calculate the change in open mode */
1941 if (state
->n_rdwr
== 0) {
1942 if (state
->n_rdonly
== 0) {
1943 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1944 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1945 calldata
->arg
.fmode
&= ~FMODE_READ
;
1947 if (state
->n_wronly
== 0) {
1948 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1949 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1950 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
1953 spin_unlock(&state
->owner
->so_lock
);
1956 /* Note: exit _without_ calling nfs4_close_done */
1957 task
->tk_action
= NULL
;
1961 if (calldata
->arg
.fmode
== 0) {
1962 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
1963 if (calldata
->roc
&&
1964 pnfs_roc_drain(calldata
->inode
, &calldata
->roc_barrier
)) {
1965 rpc_sleep_on(&NFS_SERVER(calldata
->inode
)->roc_rpcwaitq
,
1971 nfs_fattr_init(calldata
->res
.fattr
);
1972 calldata
->timestamp
= jiffies
;
1973 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
1974 &calldata
->arg
.seq_args
, &calldata
->res
.seq_res
,
1977 rpc_call_start(task
);
1980 static const struct rpc_call_ops nfs4_close_ops
= {
1981 .rpc_call_prepare
= nfs4_close_prepare
,
1982 .rpc_call_done
= nfs4_close_done
,
1983 .rpc_release
= nfs4_free_closedata
,
1987 * It is possible for data to be read/written from a mem-mapped file
1988 * after the sys_close call (which hits the vfs layer as a flush).
1989 * This means that we can't safely call nfsv4 close on a file until
1990 * the inode is cleared. This in turn means that we are not good
1991 * NFSv4 citizens - we do not indicate to the server to update the file's
1992 * share state even when we are done with one of the three share
1993 * stateid's in the inode.
1995 * NOTE: Caller must be holding the sp->so_owner semaphore!
1997 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
, bool roc
)
1999 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2000 struct nfs4_closedata
*calldata
;
2001 struct nfs4_state_owner
*sp
= state
->owner
;
2002 struct rpc_task
*task
;
2003 struct rpc_message msg
= {
2004 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2005 .rpc_cred
= state
->owner
->so_cred
,
2007 struct rpc_task_setup task_setup_data
= {
2008 .rpc_client
= server
->client
,
2009 .rpc_message
= &msg
,
2010 .callback_ops
= &nfs4_close_ops
,
2011 .workqueue
= nfsiod_workqueue
,
2012 .flags
= RPC_TASK_ASYNC
,
2014 int status
= -ENOMEM
;
2016 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2017 if (calldata
== NULL
)
2019 calldata
->inode
= state
->inode
;
2020 calldata
->state
= state
;
2021 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2022 calldata
->arg
.stateid
= &state
->open_stateid
;
2023 /* Serialization for the sequence id */
2024 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2025 if (calldata
->arg
.seqid
== NULL
)
2026 goto out_free_calldata
;
2027 calldata
->arg
.fmode
= 0;
2028 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2029 calldata
->res
.fattr
= &calldata
->fattr
;
2030 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2031 calldata
->res
.server
= server
;
2032 calldata
->roc
= roc
;
2034 calldata
->path
= *path
;
2036 msg
.rpc_argp
= &calldata
->arg
;
2037 msg
.rpc_resp
= &calldata
->res
;
2038 task_setup_data
.callback_data
= calldata
;
2039 task
= rpc_run_task(&task_setup_data
);
2041 return PTR_ERR(task
);
2044 status
= rpc_wait_for_completion_task(task
);
2051 pnfs_roc_release(state
->inode
);
2052 nfs4_put_open_state(state
);
2053 nfs4_put_state_owner(sp
);
2057 static struct inode
*
2058 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2060 struct nfs4_state
*state
;
2062 /* Protect against concurrent sillydeletes */
2063 state
= nfs4_do_open(dir
, &ctx
->path
, ctx
->mode
, open_flags
, attr
, ctx
->cred
);
2065 return ERR_CAST(state
);
2067 return igrab(state
->inode
);
2070 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2072 if (ctx
->state
== NULL
)
2075 nfs4_close_sync(&ctx
->path
, ctx
->state
, ctx
->mode
);
2077 nfs4_close_state(&ctx
->path
, ctx
->state
, ctx
->mode
);
2080 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2082 struct nfs4_server_caps_arg args
= {
2085 struct nfs4_server_caps_res res
= {};
2086 struct rpc_message msg
= {
2087 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2093 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2095 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2096 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2097 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2098 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2099 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2100 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2101 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2102 server
->caps
|= NFS_CAP_ACLS
;
2103 if (res
.has_links
!= 0)
2104 server
->caps
|= NFS_CAP_HARDLINKS
;
2105 if (res
.has_symlinks
!= 0)
2106 server
->caps
|= NFS_CAP_SYMLINKS
;
2107 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2108 server
->caps
|= NFS_CAP_FILEID
;
2109 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2110 server
->caps
|= NFS_CAP_MODE
;
2111 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2112 server
->caps
|= NFS_CAP_NLINK
;
2113 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2114 server
->caps
|= NFS_CAP_OWNER
;
2115 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2116 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2117 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2118 server
->caps
|= NFS_CAP_ATIME
;
2119 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2120 server
->caps
|= NFS_CAP_CTIME
;
2121 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2122 server
->caps
|= NFS_CAP_MTIME
;
2124 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2125 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2126 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2127 server
->acl_bitmask
= res
.acl_bitmask
;
2133 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2135 struct nfs4_exception exception
= { };
2138 err
= nfs4_handle_exception(server
,
2139 _nfs4_server_capabilities(server
, fhandle
),
2141 } while (exception
.retry
);
2145 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2146 struct nfs_fsinfo
*info
)
2148 struct nfs4_lookup_root_arg args
= {
2149 .bitmask
= nfs4_fattr_bitmap
,
2151 struct nfs4_lookup_res res
= {
2153 .fattr
= info
->fattr
,
2156 struct rpc_message msg
= {
2157 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2162 nfs_fattr_init(info
->fattr
);
2163 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2166 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2167 struct nfs_fsinfo
*info
)
2169 struct nfs4_exception exception
= { };
2172 err
= nfs4_handle_exception(server
,
2173 _nfs4_lookup_root(server
, fhandle
, info
),
2175 } while (exception
.retry
);
2180 * get the file handle for the "/" directory on the server
2182 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2183 struct nfs_fsinfo
*info
)
2187 status
= nfs4_lookup_root(server
, fhandle
, info
);
2189 status
= nfs4_server_capabilities(server
, fhandle
);
2191 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2192 return nfs4_map_errors(status
);
2196 * Get locations and (maybe) other attributes of a referral.
2197 * Note that we'll actually follow the referral later when
2198 * we detect fsid mismatch in inode revalidation
2200 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2202 int status
= -ENOMEM
;
2203 struct page
*page
= NULL
;
2204 struct nfs4_fs_locations
*locations
= NULL
;
2206 page
= alloc_page(GFP_KERNEL
);
2209 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2210 if (locations
== NULL
)
2213 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2216 /* Make sure server returned a different fsid for the referral */
2217 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2218 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__
, name
->name
);
2223 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2224 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
2226 fattr
->mode
= S_IFDIR
;
2227 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2235 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2237 struct nfs4_getattr_arg args
= {
2239 .bitmask
= server
->attr_bitmask
,
2241 struct nfs4_getattr_res res
= {
2245 struct rpc_message msg
= {
2246 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2251 nfs_fattr_init(fattr
);
2252 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2255 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2257 struct nfs4_exception exception
= { };
2260 err
= nfs4_handle_exception(server
,
2261 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2263 } while (exception
.retry
);
2268 * The file is not closed if it is opened due to the a request to change
2269 * the size of the file. The open call will not be needed once the
2270 * VFS layer lookup-intents are implemented.
2272 * Close is called when the inode is destroyed.
2273 * If we haven't opened the file for O_WRONLY, we
2274 * need to in the size_change case to obtain a stateid.
2277 * Because OPEN is always done by name in nfsv4, it is
2278 * possible that we opened a different file by the same
2279 * name. We can recognize this race condition, but we
2280 * can't do anything about it besides returning an error.
2282 * This will be fixed with VFS changes (lookup-intent).
2285 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2286 struct iattr
*sattr
)
2288 struct inode
*inode
= dentry
->d_inode
;
2289 struct rpc_cred
*cred
= NULL
;
2290 struct nfs4_state
*state
= NULL
;
2293 nfs_fattr_init(fattr
);
2295 /* Search for an existing open(O_WRITE) file */
2296 if (sattr
->ia_valid
& ATTR_FILE
) {
2297 struct nfs_open_context
*ctx
;
2299 ctx
= nfs_file_open_context(sattr
->ia_file
);
2306 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2308 nfs_setattr_update_inode(inode
, sattr
);
2312 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
2313 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2314 struct nfs_fattr
*fattr
)
2317 struct nfs4_lookup_arg args
= {
2318 .bitmask
= server
->attr_bitmask
,
2322 struct nfs4_lookup_res res
= {
2327 struct rpc_message msg
= {
2328 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2333 nfs_fattr_init(fattr
);
2335 dprintk("NFS call lookupfh %s\n", name
->name
);
2336 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2337 dprintk("NFS reply lookupfh: %d\n", status
);
2341 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
2342 struct qstr
*name
, struct nfs_fh
*fhandle
,
2343 struct nfs_fattr
*fattr
)
2345 struct nfs4_exception exception
= { };
2348 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
2350 if (err
== -NFS4ERR_MOVED
) {
2354 err
= nfs4_handle_exception(server
, err
, &exception
);
2355 } while (exception
.retry
);
2359 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
2360 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2364 dprintk("NFS call lookup %s\n", name
->name
);
2365 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
2366 if (status
== -NFS4ERR_MOVED
)
2367 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2368 dprintk("NFS reply lookup: %d\n", status
);
2372 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2374 struct nfs4_exception exception
= { };
2377 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2378 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
2380 } while (exception
.retry
);
2384 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2386 struct nfs_server
*server
= NFS_SERVER(inode
);
2387 struct nfs4_accessargs args
= {
2388 .fh
= NFS_FH(inode
),
2389 .bitmask
= server
->attr_bitmask
,
2391 struct nfs4_accessres res
= {
2394 struct rpc_message msg
= {
2395 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2398 .rpc_cred
= entry
->cred
,
2400 int mode
= entry
->mask
;
2404 * Determine which access bits we want to ask for...
2406 if (mode
& MAY_READ
)
2407 args
.access
|= NFS4_ACCESS_READ
;
2408 if (S_ISDIR(inode
->i_mode
)) {
2409 if (mode
& MAY_WRITE
)
2410 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2411 if (mode
& MAY_EXEC
)
2412 args
.access
|= NFS4_ACCESS_LOOKUP
;
2414 if (mode
& MAY_WRITE
)
2415 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2416 if (mode
& MAY_EXEC
)
2417 args
.access
|= NFS4_ACCESS_EXECUTE
;
2420 res
.fattr
= nfs_alloc_fattr();
2421 if (res
.fattr
== NULL
)
2424 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2427 if (res
.access
& NFS4_ACCESS_READ
)
2428 entry
->mask
|= MAY_READ
;
2429 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2430 entry
->mask
|= MAY_WRITE
;
2431 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2432 entry
->mask
|= MAY_EXEC
;
2433 nfs_refresh_inode(inode
, res
.fattr
);
2435 nfs_free_fattr(res
.fattr
);
2439 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2441 struct nfs4_exception exception
= { };
2444 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2445 _nfs4_proc_access(inode
, entry
),
2447 } while (exception
.retry
);
2452 * TODO: For the time being, we don't try to get any attributes
2453 * along with any of the zero-copy operations READ, READDIR,
2456 * In the case of the first three, we want to put the GETATTR
2457 * after the read-type operation -- this is because it is hard
2458 * to predict the length of a GETATTR response in v4, and thus
2459 * align the READ data correctly. This means that the GETATTR
2460 * may end up partially falling into the page cache, and we should
2461 * shift it into the 'tail' of the xdr_buf before processing.
2462 * To do this efficiently, we need to know the total length
2463 * of data received, which doesn't seem to be available outside
2466 * In the case of WRITE, we also want to put the GETATTR after
2467 * the operation -- in this case because we want to make sure
2468 * we get the post-operation mtime and size. This means that
2469 * we can't use xdr_encode_pages() as written: we need a variant
2470 * of it which would leave room in the 'tail' iovec.
2472 * Both of these changes to the XDR layer would in fact be quite
2473 * minor, but I decided to leave them for a subsequent patch.
2475 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2476 unsigned int pgbase
, unsigned int pglen
)
2478 struct nfs4_readlink args
= {
2479 .fh
= NFS_FH(inode
),
2484 struct nfs4_readlink_res res
;
2485 struct rpc_message msg
= {
2486 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2491 return nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
2494 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2495 unsigned int pgbase
, unsigned int pglen
)
2497 struct nfs4_exception exception
= { };
2500 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2501 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2503 } while (exception
.retry
);
2509 * We will need to arrange for the VFS layer to provide an atomic open.
2510 * Until then, this create/open method is prone to inefficiency and race
2511 * conditions due to the lookup, create, and open VFS calls from sys_open()
2512 * placed on the wire.
2514 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2515 * The file will be opened again in the subsequent VFS open call
2516 * (nfs4_proc_file_open).
2518 * The open for read will just hang around to be used by any process that
2519 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2523 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2524 int flags
, struct nfs_open_context
*ctx
)
2526 struct path my_path
= {
2529 struct path
*path
= &my_path
;
2530 struct nfs4_state
*state
;
2531 struct rpc_cred
*cred
= NULL
;
2540 sattr
->ia_mode
&= ~current_umask();
2541 state
= nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
);
2543 if (IS_ERR(state
)) {
2544 status
= PTR_ERR(state
);
2547 d_add(dentry
, igrab(state
->inode
));
2548 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2552 nfs4_close_sync(path
, state
, fmode
);
2557 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2559 struct nfs_server
*server
= NFS_SERVER(dir
);
2560 struct nfs_removeargs args
= {
2562 .name
.len
= name
->len
,
2563 .name
.name
= name
->name
,
2564 .bitmask
= server
->attr_bitmask
,
2566 struct nfs_removeres res
= {
2569 struct rpc_message msg
= {
2570 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2574 int status
= -ENOMEM
;
2576 res
.dir_attr
= nfs_alloc_fattr();
2577 if (res
.dir_attr
== NULL
)
2580 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 1);
2582 update_changeattr(dir
, &res
.cinfo
);
2583 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2585 nfs_free_fattr(res
.dir_attr
);
2590 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2592 struct nfs4_exception exception
= { };
2595 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2596 _nfs4_proc_remove(dir
, name
),
2598 } while (exception
.retry
);
2602 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2604 struct nfs_server
*server
= NFS_SERVER(dir
);
2605 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2606 struct nfs_removeres
*res
= msg
->rpc_resp
;
2608 args
->bitmask
= server
->cache_consistency_bitmask
;
2609 res
->server
= server
;
2610 res
->seq_res
.sr_slot
= NULL
;
2611 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2614 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2616 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2618 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2620 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2622 update_changeattr(dir
, &res
->cinfo
);
2623 nfs_post_op_update_inode(dir
, res
->dir_attr
);
2627 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2629 struct nfs_server
*server
= NFS_SERVER(dir
);
2630 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2631 struct nfs_renameres
*res
= msg
->rpc_resp
;
2633 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2634 arg
->bitmask
= server
->attr_bitmask
;
2635 res
->server
= server
;
2638 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2639 struct inode
*new_dir
)
2641 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2643 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2645 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2648 update_changeattr(old_dir
, &res
->old_cinfo
);
2649 nfs_post_op_update_inode(old_dir
, res
->old_fattr
);
2650 update_changeattr(new_dir
, &res
->new_cinfo
);
2651 nfs_post_op_update_inode(new_dir
, res
->new_fattr
);
2655 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2656 struct inode
*new_dir
, struct qstr
*new_name
)
2658 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2659 struct nfs_renameargs arg
= {
2660 .old_dir
= NFS_FH(old_dir
),
2661 .new_dir
= NFS_FH(new_dir
),
2662 .old_name
= old_name
,
2663 .new_name
= new_name
,
2664 .bitmask
= server
->attr_bitmask
,
2666 struct nfs_renameres res
= {
2669 struct rpc_message msg
= {
2670 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2674 int status
= -ENOMEM
;
2676 res
.old_fattr
= nfs_alloc_fattr();
2677 res
.new_fattr
= nfs_alloc_fattr();
2678 if (res
.old_fattr
== NULL
|| res
.new_fattr
== NULL
)
2681 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2683 update_changeattr(old_dir
, &res
.old_cinfo
);
2684 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2685 update_changeattr(new_dir
, &res
.new_cinfo
);
2686 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2689 nfs_free_fattr(res
.new_fattr
);
2690 nfs_free_fattr(res
.old_fattr
);
2694 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2695 struct inode
*new_dir
, struct qstr
*new_name
)
2697 struct nfs4_exception exception
= { };
2700 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2701 _nfs4_proc_rename(old_dir
, old_name
,
2704 } while (exception
.retry
);
2708 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2710 struct nfs_server
*server
= NFS_SERVER(inode
);
2711 struct nfs4_link_arg arg
= {
2712 .fh
= NFS_FH(inode
),
2713 .dir_fh
= NFS_FH(dir
),
2715 .bitmask
= server
->attr_bitmask
,
2717 struct nfs4_link_res res
= {
2720 struct rpc_message msg
= {
2721 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2725 int status
= -ENOMEM
;
2727 res
.fattr
= nfs_alloc_fattr();
2728 res
.dir_attr
= nfs_alloc_fattr();
2729 if (res
.fattr
== NULL
|| res
.dir_attr
== NULL
)
2732 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2734 update_changeattr(dir
, &res
.cinfo
);
2735 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2736 nfs_post_op_update_inode(inode
, res
.fattr
);
2739 nfs_free_fattr(res
.dir_attr
);
2740 nfs_free_fattr(res
.fattr
);
2744 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2746 struct nfs4_exception exception
= { };
2749 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2750 _nfs4_proc_link(inode
, dir
, name
),
2752 } while (exception
.retry
);
2756 struct nfs4_createdata
{
2757 struct rpc_message msg
;
2758 struct nfs4_create_arg arg
;
2759 struct nfs4_create_res res
;
2761 struct nfs_fattr fattr
;
2762 struct nfs_fattr dir_fattr
;
2765 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2766 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2768 struct nfs4_createdata
*data
;
2770 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2772 struct nfs_server
*server
= NFS_SERVER(dir
);
2774 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2775 data
->msg
.rpc_argp
= &data
->arg
;
2776 data
->msg
.rpc_resp
= &data
->res
;
2777 data
->arg
.dir_fh
= NFS_FH(dir
);
2778 data
->arg
.server
= server
;
2779 data
->arg
.name
= name
;
2780 data
->arg
.attrs
= sattr
;
2781 data
->arg
.ftype
= ftype
;
2782 data
->arg
.bitmask
= server
->attr_bitmask
;
2783 data
->res
.server
= server
;
2784 data
->res
.fh
= &data
->fh
;
2785 data
->res
.fattr
= &data
->fattr
;
2786 data
->res
.dir_fattr
= &data
->dir_fattr
;
2787 nfs_fattr_init(data
->res
.fattr
);
2788 nfs_fattr_init(data
->res
.dir_fattr
);
2793 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2795 int status
= nfs4_call_sync(NFS_SERVER(dir
), &data
->msg
,
2796 &data
->arg
, &data
->res
, 1);
2798 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2799 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2800 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2805 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2810 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2811 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2813 struct nfs4_createdata
*data
;
2814 int status
= -ENAMETOOLONG
;
2816 if (len
> NFS4_MAXPATHLEN
)
2820 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2824 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2825 data
->arg
.u
.symlink
.pages
= &page
;
2826 data
->arg
.u
.symlink
.len
= len
;
2828 status
= nfs4_do_create(dir
, dentry
, data
);
2830 nfs4_free_createdata(data
);
2835 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2836 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2838 struct nfs4_exception exception
= { };
2841 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2842 _nfs4_proc_symlink(dir
, dentry
, page
,
2845 } while (exception
.retry
);
2849 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2850 struct iattr
*sattr
)
2852 struct nfs4_createdata
*data
;
2853 int status
= -ENOMEM
;
2855 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2859 status
= nfs4_do_create(dir
, dentry
, data
);
2861 nfs4_free_createdata(data
);
2866 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2867 struct iattr
*sattr
)
2869 struct nfs4_exception exception
= { };
2872 sattr
->ia_mode
&= ~current_umask();
2874 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2875 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2877 } while (exception
.retry
);
2881 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2882 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
2884 struct inode
*dir
= dentry
->d_inode
;
2885 struct nfs4_readdir_arg args
= {
2890 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2893 struct nfs4_readdir_res res
;
2894 struct rpc_message msg
= {
2895 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2902 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
2903 dentry
->d_parent
->d_name
.name
,
2904 dentry
->d_name
.name
,
2905 (unsigned long long)cookie
);
2906 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2907 res
.pgbase
= args
.pgbase
;
2908 status
= nfs4_call_sync(NFS_SERVER(dir
), &msg
, &args
, &res
, 0);
2910 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2911 status
+= args
.pgbase
;
2914 nfs_invalidate_atime(dir
);
2916 dprintk("%s: returns %d\n", __func__
, status
);
2920 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2921 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
2923 struct nfs4_exception exception
= { };
2926 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2927 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2928 pages
, count
, plus
),
2930 } while (exception
.retry
);
2934 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2935 struct iattr
*sattr
, dev_t rdev
)
2937 struct nfs4_createdata
*data
;
2938 int mode
= sattr
->ia_mode
;
2939 int status
= -ENOMEM
;
2941 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2942 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2944 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
2949 data
->arg
.ftype
= NF4FIFO
;
2950 else if (S_ISBLK(mode
)) {
2951 data
->arg
.ftype
= NF4BLK
;
2952 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2953 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2955 else if (S_ISCHR(mode
)) {
2956 data
->arg
.ftype
= NF4CHR
;
2957 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2958 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2961 status
= nfs4_do_create(dir
, dentry
, data
);
2963 nfs4_free_createdata(data
);
2968 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2969 struct iattr
*sattr
, dev_t rdev
)
2971 struct nfs4_exception exception
= { };
2974 sattr
->ia_mode
&= ~current_umask();
2976 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2977 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2979 } while (exception
.retry
);
2983 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2984 struct nfs_fsstat
*fsstat
)
2986 struct nfs4_statfs_arg args
= {
2988 .bitmask
= server
->attr_bitmask
,
2990 struct nfs4_statfs_res res
= {
2993 struct rpc_message msg
= {
2994 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2999 nfs_fattr_init(fsstat
->fattr
);
3000 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
3003 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3005 struct nfs4_exception exception
= { };
3008 err
= nfs4_handle_exception(server
,
3009 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3011 } while (exception
.retry
);
3015 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3016 struct nfs_fsinfo
*fsinfo
)
3018 struct nfs4_fsinfo_arg args
= {
3020 .bitmask
= server
->attr_bitmask
,
3022 struct nfs4_fsinfo_res res
= {
3025 struct rpc_message msg
= {
3026 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3031 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
3034 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3036 struct nfs4_exception exception
= { };
3040 err
= nfs4_handle_exception(server
,
3041 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3043 } while (exception
.retry
);
3047 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3049 nfs_fattr_init(fsinfo
->fattr
);
3050 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3053 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3054 struct nfs_pathconf
*pathconf
)
3056 struct nfs4_pathconf_arg args
= {
3058 .bitmask
= server
->attr_bitmask
,
3060 struct nfs4_pathconf_res res
= {
3061 .pathconf
= pathconf
,
3063 struct rpc_message msg
= {
3064 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3069 /* None of the pathconf attributes are mandatory to implement */
3070 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3071 memset(pathconf
, 0, sizeof(*pathconf
));
3075 nfs_fattr_init(pathconf
->fattr
);
3076 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
3079 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3080 struct nfs_pathconf
*pathconf
)
3082 struct nfs4_exception exception
= { };
3086 err
= nfs4_handle_exception(server
,
3087 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3089 } while (exception
.retry
);
3093 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3095 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3097 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3098 nfs_restart_rpc(task
, server
->nfs_client
);
3102 nfs_invalidate_atime(data
->inode
);
3103 if (task
->tk_status
> 0)
3104 renew_lease(server
, data
->timestamp
);
3108 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3111 dprintk("--> %s\n", __func__
);
3113 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3116 return data
->read_done_cb(task
, data
);
3119 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3121 data
->timestamp
= jiffies
;
3122 data
->read_done_cb
= nfs4_read_done_cb
;
3123 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3126 /* Reset the the nfs_read_data to send the read to the MDS. */
3127 void nfs4_reset_read(struct rpc_task
*task
, struct nfs_read_data
*data
)
3129 dprintk("%s Reset task for i/o through\n", __func__
);
3130 put_lseg(data
->lseg
);
3132 /* offsets will differ in the dense stripe case */
3133 data
->args
.offset
= data
->mds_offset
;
3134 data
->ds_clp
= NULL
;
3135 data
->args
.fh
= NFS_FH(data
->inode
);
3136 data
->read_done_cb
= nfs4_read_done_cb
;
3137 task
->tk_ops
= data
->mds_ops
;
3138 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3140 EXPORT_SYMBOL_GPL(nfs4_reset_read
);
3142 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3144 struct inode
*inode
= data
->inode
;
3146 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3147 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3150 if (task
->tk_status
>= 0) {
3151 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3152 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3157 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3159 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3161 return data
->write_done_cb(task
, data
);
3164 /* Reset the the nfs_write_data to send the write to the MDS. */
3165 void nfs4_reset_write(struct rpc_task
*task
, struct nfs_write_data
*data
)
3167 dprintk("%s Reset task for i/o through\n", __func__
);
3168 put_lseg(data
->lseg
);
3170 data
->ds_clp
= NULL
;
3171 data
->write_done_cb
= nfs4_write_done_cb
;
3172 data
->args
.fh
= NFS_FH(data
->inode
);
3173 data
->args
.bitmask
= data
->res
.server
->cache_consistency_bitmask
;
3174 data
->args
.offset
= data
->mds_offset
;
3175 data
->res
.fattr
= &data
->fattr
;
3176 task
->tk_ops
= data
->mds_ops
;
3177 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3179 EXPORT_SYMBOL_GPL(nfs4_reset_write
);
3181 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3183 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3186 data
->args
.bitmask
= NULL
;
3187 data
->res
.fattr
= NULL
;
3189 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3190 if (!data
->write_done_cb
)
3191 data
->write_done_cb
= nfs4_write_done_cb
;
3192 data
->res
.server
= server
;
3193 data
->timestamp
= jiffies
;
3195 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3198 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3200 struct inode
*inode
= data
->inode
;
3202 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3205 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3206 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3209 nfs_refresh_inode(inode
, data
->res
.fattr
);
3213 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3215 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3217 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3218 data
->res
.server
= server
;
3219 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3222 struct nfs4_renewdata
{
3223 struct nfs_client
*client
;
3224 unsigned long timestamp
;
3228 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3229 * standalone procedure for queueing an asynchronous RENEW.
3231 static void nfs4_renew_release(void *calldata
)
3233 struct nfs4_renewdata
*data
= calldata
;
3234 struct nfs_client
*clp
= data
->client
;
3236 if (atomic_read(&clp
->cl_count
) > 1)
3237 nfs4_schedule_state_renewal(clp
);
3238 nfs_put_client(clp
);
3242 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3244 struct nfs4_renewdata
*data
= calldata
;
3245 struct nfs_client
*clp
= data
->client
;
3246 unsigned long timestamp
= data
->timestamp
;
3248 if (task
->tk_status
< 0) {
3249 /* Unless we're shutting down, schedule state recovery! */
3250 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) != 0)
3251 nfs4_schedule_lease_recovery(clp
);
3254 do_renew_lease(clp
, timestamp
);
3257 static const struct rpc_call_ops nfs4_renew_ops
= {
3258 .rpc_call_done
= nfs4_renew_done
,
3259 .rpc_release
= nfs4_renew_release
,
3262 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3264 struct rpc_message msg
= {
3265 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3269 struct nfs4_renewdata
*data
;
3271 if (!atomic_inc_not_zero(&clp
->cl_count
))
3273 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3277 data
->timestamp
= jiffies
;
3278 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3279 &nfs4_renew_ops
, data
);
3282 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3284 struct rpc_message msg
= {
3285 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3289 unsigned long now
= jiffies
;
3292 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3295 do_renew_lease(clp
, now
);
3299 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3301 return (server
->caps
& NFS_CAP_ACLS
)
3302 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3303 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3306 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3307 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3310 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3312 static void buf_to_pages(const void *buf
, size_t buflen
,
3313 struct page
**pages
, unsigned int *pgbase
)
3315 const void *p
= buf
;
3317 *pgbase
= offset_in_page(buf
);
3319 while (p
< buf
+ buflen
) {
3320 *(pages
++) = virt_to_page(p
);
3321 p
+= PAGE_CACHE_SIZE
;
3325 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3326 struct page
**pages
, unsigned int *pgbase
)
3328 struct page
*newpage
, **spages
;
3334 len
= min_t(size_t, PAGE_CACHE_SIZE
, buflen
);
3335 newpage
= alloc_page(GFP_KERNEL
);
3337 if (newpage
== NULL
)
3339 memcpy(page_address(newpage
), buf
, len
);
3344 } while (buflen
!= 0);
3350 __free_page(spages
[rc
-1]);
3354 struct nfs4_cached_acl
{
3360 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3362 struct nfs_inode
*nfsi
= NFS_I(inode
);
3364 spin_lock(&inode
->i_lock
);
3365 kfree(nfsi
->nfs4_acl
);
3366 nfsi
->nfs4_acl
= acl
;
3367 spin_unlock(&inode
->i_lock
);
3370 static void nfs4_zap_acl_attr(struct inode
*inode
)
3372 nfs4_set_cached_acl(inode
, NULL
);
3375 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3377 struct nfs_inode
*nfsi
= NFS_I(inode
);
3378 struct nfs4_cached_acl
*acl
;
3381 spin_lock(&inode
->i_lock
);
3382 acl
= nfsi
->nfs4_acl
;
3385 if (buf
== NULL
) /* user is just asking for length */
3387 if (acl
->cached
== 0)
3389 ret
= -ERANGE
; /* see getxattr(2) man page */
3390 if (acl
->len
> buflen
)
3392 memcpy(buf
, acl
->data
, acl
->len
);
3396 spin_unlock(&inode
->i_lock
);
3400 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3402 struct nfs4_cached_acl
*acl
;
3404 if (buf
&& acl_len
<= PAGE_SIZE
) {
3405 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3409 memcpy(acl
->data
, buf
, acl_len
);
3411 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3418 nfs4_set_cached_acl(inode
, acl
);
3421 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3423 struct page
*pages
[NFS4ACL_MAXPAGES
];
3424 struct nfs_getaclargs args
= {
3425 .fh
= NFS_FH(inode
),
3429 struct nfs_getaclres res
= {
3433 struct rpc_message msg
= {
3434 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3438 struct page
*localpage
= NULL
;
3441 if (buflen
< PAGE_SIZE
) {
3442 /* As long as we're doing a round trip to the server anyway,
3443 * let's be prepared for a page of acl data. */
3444 localpage
= alloc_page(GFP_KERNEL
);
3445 resp_buf
= page_address(localpage
);
3446 if (localpage
== NULL
)
3448 args
.acl_pages
[0] = localpage
;
3449 args
.acl_pgbase
= 0;
3450 args
.acl_len
= PAGE_SIZE
;
3453 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
3455 ret
= nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
3458 if (res
.acl_len
> args
.acl_len
)
3459 nfs4_write_cached_acl(inode
, NULL
, res
.acl_len
);
3461 nfs4_write_cached_acl(inode
, resp_buf
, res
.acl_len
);
3464 if (res
.acl_len
> buflen
)
3467 memcpy(buf
, resp_buf
, res
.acl_len
);
3472 __free_page(localpage
);
3476 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3478 struct nfs4_exception exception
= { };
3481 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3484 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3485 } while (exception
.retry
);
3489 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3491 struct nfs_server
*server
= NFS_SERVER(inode
);
3494 if (!nfs4_server_supports_acls(server
))
3496 ret
= nfs_revalidate_inode(server
, inode
);
3499 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3500 nfs_zap_acl_cache(inode
);
3501 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3504 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3507 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3509 struct nfs_server
*server
= NFS_SERVER(inode
);
3510 struct page
*pages
[NFS4ACL_MAXPAGES
];
3511 struct nfs_setaclargs arg
= {
3512 .fh
= NFS_FH(inode
),
3516 struct nfs_setaclres res
;
3517 struct rpc_message msg
= {
3518 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3524 if (!nfs4_server_supports_acls(server
))
3526 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3529 nfs_inode_return_delegation(inode
);
3530 ret
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3533 * Free each page after tx, so the only ref left is
3534 * held by the network stack
3537 put_page(pages
[i
-1]);
3540 * Acl update can result in inode attribute update.
3541 * so mark the attribute cache invalid.
3543 spin_lock(&inode
->i_lock
);
3544 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3545 spin_unlock(&inode
->i_lock
);
3546 nfs_access_zap_cache(inode
);
3547 nfs_zap_acl_cache(inode
);
3551 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3553 struct nfs4_exception exception
= { };
3556 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3557 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3559 } while (exception
.retry
);
3564 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3566 struct nfs_client
*clp
= server
->nfs_client
;
3568 if (task
->tk_status
>= 0)
3570 switch(task
->tk_status
) {
3571 case -NFS4ERR_ADMIN_REVOKED
:
3572 case -NFS4ERR_BAD_STATEID
:
3573 case -NFS4ERR_OPENMODE
:
3576 nfs4_schedule_stateid_recovery(server
, state
);
3577 goto wait_on_recovery
;
3578 case -NFS4ERR_STALE_STATEID
:
3579 case -NFS4ERR_STALE_CLIENTID
:
3580 case -NFS4ERR_EXPIRED
:
3581 nfs4_schedule_lease_recovery(clp
);
3582 goto wait_on_recovery
;
3583 #if defined(CONFIG_NFS_V4_1)
3584 case -NFS4ERR_BADSESSION
:
3585 case -NFS4ERR_BADSLOT
:
3586 case -NFS4ERR_BAD_HIGH_SLOT
:
3587 case -NFS4ERR_DEADSESSION
:
3588 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3589 case -NFS4ERR_SEQ_FALSE_RETRY
:
3590 case -NFS4ERR_SEQ_MISORDERED
:
3591 dprintk("%s ERROR %d, Reset session\n", __func__
,
3593 nfs4_schedule_session_recovery(clp
->cl_session
);
3594 task
->tk_status
= 0;
3596 #endif /* CONFIG_NFS_V4_1 */
3597 case -NFS4ERR_DELAY
:
3598 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3599 case -NFS4ERR_GRACE
:
3601 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3602 task
->tk_status
= 0;
3604 case -NFS4ERR_OLD_STATEID
:
3605 task
->tk_status
= 0;
3608 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3611 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3612 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3613 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3614 task
->tk_status
= 0;
3618 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
3619 unsigned short port
, struct rpc_cred
*cred
,
3620 struct nfs4_setclientid_res
*res
)
3622 nfs4_verifier sc_verifier
;
3623 struct nfs4_setclientid setclientid
= {
3624 .sc_verifier
= &sc_verifier
,
3626 .sc_cb_ident
= clp
->cl_cb_ident
,
3628 struct rpc_message msg
= {
3629 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3630 .rpc_argp
= &setclientid
,
3638 p
= (__be32
*)sc_verifier
.data
;
3639 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3640 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3643 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3644 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3646 rpc_peeraddr2str(clp
->cl_rpcclient
,
3648 rpc_peeraddr2str(clp
->cl_rpcclient
,
3650 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3651 clp
->cl_id_uniquifier
);
3652 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3653 sizeof(setclientid
.sc_netid
),
3654 rpc_peeraddr2str(clp
->cl_rpcclient
,
3655 RPC_DISPLAY_NETID
));
3656 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3657 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3658 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3660 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3661 if (status
!= -NFS4ERR_CLID_INUSE
)
3666 ssleep(clp
->cl_lease_time
/ HZ
+ 1);
3668 if (++clp
->cl_id_uniquifier
== 0)
3674 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3675 struct nfs4_setclientid_res
*arg
,
3676 struct rpc_cred
*cred
)
3678 struct nfs_fsinfo fsinfo
;
3679 struct rpc_message msg
= {
3680 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3682 .rpc_resp
= &fsinfo
,
3689 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3691 spin_lock(&clp
->cl_lock
);
3692 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3693 clp
->cl_last_renewal
= now
;
3694 spin_unlock(&clp
->cl_lock
);
3699 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3700 struct nfs4_setclientid_res
*arg
,
3701 struct rpc_cred
*cred
)
3706 err
= _nfs4_proc_setclientid_confirm(clp
, arg
, cred
);
3710 case -NFS4ERR_RESOURCE
:
3711 /* The IBM lawyers misread another document! */
3712 case -NFS4ERR_DELAY
:
3713 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
3719 struct nfs4_delegreturndata
{
3720 struct nfs4_delegreturnargs args
;
3721 struct nfs4_delegreturnres res
;
3723 nfs4_stateid stateid
;
3724 unsigned long timestamp
;
3725 struct nfs_fattr fattr
;
3729 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3731 struct nfs4_delegreturndata
*data
= calldata
;
3733 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3736 switch (task
->tk_status
) {
3737 case -NFS4ERR_STALE_STATEID
:
3738 case -NFS4ERR_EXPIRED
:
3740 renew_lease(data
->res
.server
, data
->timestamp
);
3743 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
3745 nfs_restart_rpc(task
, data
->res
.server
->nfs_client
);
3749 data
->rpc_status
= task
->tk_status
;
3752 static void nfs4_delegreturn_release(void *calldata
)
3757 #if defined(CONFIG_NFS_V4_1)
3758 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3760 struct nfs4_delegreturndata
*d_data
;
3762 d_data
= (struct nfs4_delegreturndata
*)data
;
3764 if (nfs4_setup_sequence(d_data
->res
.server
,
3765 &d_data
->args
.seq_args
,
3766 &d_data
->res
.seq_res
, 1, task
))
3768 rpc_call_start(task
);
3770 #endif /* CONFIG_NFS_V4_1 */
3772 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3773 #if defined(CONFIG_NFS_V4_1)
3774 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3775 #endif /* CONFIG_NFS_V4_1 */
3776 .rpc_call_done
= nfs4_delegreturn_done
,
3777 .rpc_release
= nfs4_delegreturn_release
,
3780 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3782 struct nfs4_delegreturndata
*data
;
3783 struct nfs_server
*server
= NFS_SERVER(inode
);
3784 struct rpc_task
*task
;
3785 struct rpc_message msg
= {
3786 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3789 struct rpc_task_setup task_setup_data
= {
3790 .rpc_client
= server
->client
,
3791 .rpc_message
= &msg
,
3792 .callback_ops
= &nfs4_delegreturn_ops
,
3793 .flags
= RPC_TASK_ASYNC
,
3797 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
3800 data
->args
.fhandle
= &data
->fh
;
3801 data
->args
.stateid
= &data
->stateid
;
3802 data
->args
.bitmask
= server
->attr_bitmask
;
3803 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3804 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3805 data
->res
.fattr
= &data
->fattr
;
3806 data
->res
.server
= server
;
3807 nfs_fattr_init(data
->res
.fattr
);
3808 data
->timestamp
= jiffies
;
3809 data
->rpc_status
= 0;
3811 task_setup_data
.callback_data
= data
;
3812 msg
.rpc_argp
= &data
->args
;
3813 msg
.rpc_resp
= &data
->res
;
3814 task
= rpc_run_task(&task_setup_data
);
3816 return PTR_ERR(task
);
3819 status
= nfs4_wait_for_completion_rpc_task(task
);
3822 status
= data
->rpc_status
;
3825 nfs_refresh_inode(inode
, &data
->fattr
);
3831 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3833 struct nfs_server
*server
= NFS_SERVER(inode
);
3834 struct nfs4_exception exception
= { };
3837 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3839 case -NFS4ERR_STALE_STATEID
:
3840 case -NFS4ERR_EXPIRED
:
3844 err
= nfs4_handle_exception(server
, err
, &exception
);
3845 } while (exception
.retry
);
3849 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3850 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3853 * sleep, with exponential backoff, and retry the LOCK operation.
3855 static unsigned long
3856 nfs4_set_lock_task_retry(unsigned long timeout
)
3858 schedule_timeout_killable(timeout
);
3860 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3861 return NFS4_LOCK_MAXTIMEOUT
;
3865 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3867 struct inode
*inode
= state
->inode
;
3868 struct nfs_server
*server
= NFS_SERVER(inode
);
3869 struct nfs_client
*clp
= server
->nfs_client
;
3870 struct nfs_lockt_args arg
= {
3871 .fh
= NFS_FH(inode
),
3874 struct nfs_lockt_res res
= {
3877 struct rpc_message msg
= {
3878 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3881 .rpc_cred
= state
->owner
->so_cred
,
3883 struct nfs4_lock_state
*lsp
;
3886 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3887 status
= nfs4_set_lock_state(state
, request
);
3890 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3891 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3892 arg
.lock_owner
.s_dev
= server
->s_dev
;
3893 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3896 request
->fl_type
= F_UNLCK
;
3898 case -NFS4ERR_DENIED
:
3901 request
->fl_ops
->fl_release_private(request
);
3906 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3908 struct nfs4_exception exception
= { };
3912 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3913 _nfs4_proc_getlk(state
, cmd
, request
),
3915 } while (exception
.retry
);
3919 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3922 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3924 res
= posix_lock_file_wait(file
, fl
);
3927 res
= flock_lock_file_wait(file
, fl
);
3935 struct nfs4_unlockdata
{
3936 struct nfs_locku_args arg
;
3937 struct nfs_locku_res res
;
3938 struct nfs4_lock_state
*lsp
;
3939 struct nfs_open_context
*ctx
;
3940 struct file_lock fl
;
3941 const struct nfs_server
*server
;
3942 unsigned long timestamp
;
3945 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3946 struct nfs_open_context
*ctx
,
3947 struct nfs4_lock_state
*lsp
,
3948 struct nfs_seqid
*seqid
)
3950 struct nfs4_unlockdata
*p
;
3951 struct inode
*inode
= lsp
->ls_state
->inode
;
3953 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
3956 p
->arg
.fh
= NFS_FH(inode
);
3958 p
->arg
.seqid
= seqid
;
3959 p
->res
.seqid
= seqid
;
3960 p
->arg
.stateid
= &lsp
->ls_stateid
;
3962 atomic_inc(&lsp
->ls_count
);
3963 /* Ensure we don't close file until we're done freeing locks! */
3964 p
->ctx
= get_nfs_open_context(ctx
);
3965 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3966 p
->server
= NFS_SERVER(inode
);
3970 static void nfs4_locku_release_calldata(void *data
)
3972 struct nfs4_unlockdata
*calldata
= data
;
3973 nfs_free_seqid(calldata
->arg
.seqid
);
3974 nfs4_put_lock_state(calldata
->lsp
);
3975 put_nfs_open_context(calldata
->ctx
);
3979 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3981 struct nfs4_unlockdata
*calldata
= data
;
3983 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
3985 switch (task
->tk_status
) {
3987 memcpy(calldata
->lsp
->ls_stateid
.data
,
3988 calldata
->res
.stateid
.data
,
3989 sizeof(calldata
->lsp
->ls_stateid
.data
));
3990 renew_lease(calldata
->server
, calldata
->timestamp
);
3992 case -NFS4ERR_BAD_STATEID
:
3993 case -NFS4ERR_OLD_STATEID
:
3994 case -NFS4ERR_STALE_STATEID
:
3995 case -NFS4ERR_EXPIRED
:
3998 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
3999 nfs_restart_rpc(task
,
4000 calldata
->server
->nfs_client
);
4004 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4006 struct nfs4_unlockdata
*calldata
= data
;
4008 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4010 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
4011 /* Note: exit _without_ running nfs4_locku_done */
4012 task
->tk_action
= NULL
;
4015 calldata
->timestamp
= jiffies
;
4016 if (nfs4_setup_sequence(calldata
->server
,
4017 &calldata
->arg
.seq_args
,
4018 &calldata
->res
.seq_res
, 1, task
))
4020 rpc_call_start(task
);
4023 static const struct rpc_call_ops nfs4_locku_ops
= {
4024 .rpc_call_prepare
= nfs4_locku_prepare
,
4025 .rpc_call_done
= nfs4_locku_done
,
4026 .rpc_release
= nfs4_locku_release_calldata
,
4029 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4030 struct nfs_open_context
*ctx
,
4031 struct nfs4_lock_state
*lsp
,
4032 struct nfs_seqid
*seqid
)
4034 struct nfs4_unlockdata
*data
;
4035 struct rpc_message msg
= {
4036 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4037 .rpc_cred
= ctx
->cred
,
4039 struct rpc_task_setup task_setup_data
= {
4040 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4041 .rpc_message
= &msg
,
4042 .callback_ops
= &nfs4_locku_ops
,
4043 .workqueue
= nfsiod_workqueue
,
4044 .flags
= RPC_TASK_ASYNC
,
4047 /* Ensure this is an unlock - when canceling a lock, the
4048 * canceled lock is passed in, and it won't be an unlock.
4050 fl
->fl_type
= F_UNLCK
;
4052 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4054 nfs_free_seqid(seqid
);
4055 return ERR_PTR(-ENOMEM
);
4058 msg
.rpc_argp
= &data
->arg
;
4059 msg
.rpc_resp
= &data
->res
;
4060 task_setup_data
.callback_data
= data
;
4061 return rpc_run_task(&task_setup_data
);
4064 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4066 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4067 struct nfs_seqid
*seqid
;
4068 struct nfs4_lock_state
*lsp
;
4069 struct rpc_task
*task
;
4071 unsigned char fl_flags
= request
->fl_flags
;
4073 status
= nfs4_set_lock_state(state
, request
);
4074 /* Unlock _before_ we do the RPC call */
4075 request
->fl_flags
|= FL_EXISTS
;
4076 down_read(&nfsi
->rwsem
);
4077 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4078 up_read(&nfsi
->rwsem
);
4081 up_read(&nfsi
->rwsem
);
4084 /* Is this a delegated lock? */
4085 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4087 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4088 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4092 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4093 status
= PTR_ERR(task
);
4096 status
= nfs4_wait_for_completion_rpc_task(task
);
4099 request
->fl_flags
= fl_flags
;
4103 struct nfs4_lockdata
{
4104 struct nfs_lock_args arg
;
4105 struct nfs_lock_res res
;
4106 struct nfs4_lock_state
*lsp
;
4107 struct nfs_open_context
*ctx
;
4108 struct file_lock fl
;
4109 unsigned long timestamp
;
4112 struct nfs_server
*server
;
4115 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4116 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4119 struct nfs4_lockdata
*p
;
4120 struct inode
*inode
= lsp
->ls_state
->inode
;
4121 struct nfs_server
*server
= NFS_SERVER(inode
);
4123 p
= kzalloc(sizeof(*p
), gfp_mask
);
4127 p
->arg
.fh
= NFS_FH(inode
);
4129 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4130 if (p
->arg
.open_seqid
== NULL
)
4132 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4133 if (p
->arg
.lock_seqid
== NULL
)
4134 goto out_free_seqid
;
4135 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4136 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4137 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
4138 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4139 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4142 atomic_inc(&lsp
->ls_count
);
4143 p
->ctx
= get_nfs_open_context(ctx
);
4144 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4147 nfs_free_seqid(p
->arg
.open_seqid
);
4153 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4155 struct nfs4_lockdata
*data
= calldata
;
4156 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4158 dprintk("%s: begin!\n", __func__
);
4159 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4161 /* Do we need to do an open_to_lock_owner? */
4162 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4163 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4165 data
->arg
.open_stateid
= &state
->stateid
;
4166 data
->arg
.new_lock_owner
= 1;
4167 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4169 data
->arg
.new_lock_owner
= 0;
4170 data
->timestamp
= jiffies
;
4171 if (nfs4_setup_sequence(data
->server
,
4172 &data
->arg
.seq_args
,
4173 &data
->res
.seq_res
, 1, task
))
4175 rpc_call_start(task
);
4176 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4179 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4181 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4182 nfs4_lock_prepare(task
, calldata
);
4185 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4187 struct nfs4_lockdata
*data
= calldata
;
4189 dprintk("%s: begin!\n", __func__
);
4191 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4194 data
->rpc_status
= task
->tk_status
;
4195 if (data
->arg
.new_lock_owner
!= 0) {
4196 if (data
->rpc_status
== 0)
4197 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4201 if (data
->rpc_status
== 0) {
4202 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
4203 sizeof(data
->lsp
->ls_stateid
.data
));
4204 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4205 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
4208 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4211 static void nfs4_lock_release(void *calldata
)
4213 struct nfs4_lockdata
*data
= calldata
;
4215 dprintk("%s: begin!\n", __func__
);
4216 nfs_free_seqid(data
->arg
.open_seqid
);
4217 if (data
->cancelled
!= 0) {
4218 struct rpc_task
*task
;
4219 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4220 data
->arg
.lock_seqid
);
4222 rpc_put_task_async(task
);
4223 dprintk("%s: cancelling lock!\n", __func__
);
4225 nfs_free_seqid(data
->arg
.lock_seqid
);
4226 nfs4_put_lock_state(data
->lsp
);
4227 put_nfs_open_context(data
->ctx
);
4229 dprintk("%s: done!\n", __func__
);
4232 static const struct rpc_call_ops nfs4_lock_ops
= {
4233 .rpc_call_prepare
= nfs4_lock_prepare
,
4234 .rpc_call_done
= nfs4_lock_done
,
4235 .rpc_release
= nfs4_lock_release
,
4238 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4239 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4240 .rpc_call_done
= nfs4_lock_done
,
4241 .rpc_release
= nfs4_lock_release
,
4244 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4247 case -NFS4ERR_ADMIN_REVOKED
:
4248 case -NFS4ERR_BAD_STATEID
:
4249 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4250 if (new_lock_owner
!= 0 ||
4251 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4252 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4254 case -NFS4ERR_STALE_STATEID
:
4255 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4256 case -NFS4ERR_EXPIRED
:
4257 nfs4_schedule_lease_recovery(server
->nfs_client
);
4261 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4263 struct nfs4_lockdata
*data
;
4264 struct rpc_task
*task
;
4265 struct rpc_message msg
= {
4266 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4267 .rpc_cred
= state
->owner
->so_cred
,
4269 struct rpc_task_setup task_setup_data
= {
4270 .rpc_client
= NFS_CLIENT(state
->inode
),
4271 .rpc_message
= &msg
,
4272 .callback_ops
= &nfs4_lock_ops
,
4273 .workqueue
= nfsiod_workqueue
,
4274 .flags
= RPC_TASK_ASYNC
,
4278 dprintk("%s: begin!\n", __func__
);
4279 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4280 fl
->fl_u
.nfs4_fl
.owner
,
4281 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4285 data
->arg
.block
= 1;
4286 if (recovery_type
> NFS_LOCK_NEW
) {
4287 if (recovery_type
== NFS_LOCK_RECLAIM
)
4288 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4289 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4291 msg
.rpc_argp
= &data
->arg
;
4292 msg
.rpc_resp
= &data
->res
;
4293 task_setup_data
.callback_data
= data
;
4294 task
= rpc_run_task(&task_setup_data
);
4296 return PTR_ERR(task
);
4297 ret
= nfs4_wait_for_completion_rpc_task(task
);
4299 ret
= data
->rpc_status
;
4301 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4302 data
->arg
.new_lock_owner
, ret
);
4304 data
->cancelled
= 1;
4306 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4310 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4312 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4313 struct nfs4_exception exception
= { };
4317 /* Cache the lock if possible... */
4318 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4320 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4321 if (err
!= -NFS4ERR_DELAY
)
4323 nfs4_handle_exception(server
, err
, &exception
);
4324 } while (exception
.retry
);
4328 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4330 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4331 struct nfs4_exception exception
= { };
4334 err
= nfs4_set_lock_state(state
, request
);
4338 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4340 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4344 case -NFS4ERR_GRACE
:
4345 case -NFS4ERR_DELAY
:
4346 nfs4_handle_exception(server
, err
, &exception
);
4349 } while (exception
.retry
);
4354 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4356 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4357 unsigned char fl_flags
= request
->fl_flags
;
4358 int status
= -ENOLCK
;
4360 if ((fl_flags
& FL_POSIX
) &&
4361 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4363 /* Is this a delegated open? */
4364 status
= nfs4_set_lock_state(state
, request
);
4367 request
->fl_flags
|= FL_ACCESS
;
4368 status
= do_vfs_lock(request
->fl_file
, request
);
4371 down_read(&nfsi
->rwsem
);
4372 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4373 /* Yes: cache locks! */
4374 /* ...but avoid races with delegation recall... */
4375 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4376 status
= do_vfs_lock(request
->fl_file
, request
);
4379 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4382 /* Note: we always want to sleep here! */
4383 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4384 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4385 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
4387 up_read(&nfsi
->rwsem
);
4389 request
->fl_flags
= fl_flags
;
4393 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4395 struct nfs4_exception exception
= { };
4399 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4400 if (err
== -NFS4ERR_DENIED
)
4402 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4404 } while (exception
.retry
);
4409 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4411 struct nfs_open_context
*ctx
;
4412 struct nfs4_state
*state
;
4413 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4416 /* verify open state */
4417 ctx
= nfs_file_open_context(filp
);
4420 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4423 if (IS_GETLK(cmd
)) {
4425 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4429 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4432 if (request
->fl_type
== F_UNLCK
) {
4434 return nfs4_proc_unlck(state
, cmd
, request
);
4441 status
= nfs4_proc_setlk(state
, cmd
, request
);
4442 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4444 timeout
= nfs4_set_lock_task_retry(timeout
);
4445 status
= -ERESTARTSYS
;
4448 } while(status
< 0);
4452 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4454 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4455 struct nfs4_exception exception
= { };
4458 err
= nfs4_set_lock_state(state
, fl
);
4462 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4465 printk(KERN_ERR
"%s: unhandled error %d.\n",
4470 case -NFS4ERR_EXPIRED
:
4471 case -NFS4ERR_STALE_CLIENTID
:
4472 case -NFS4ERR_STALE_STATEID
:
4473 nfs4_schedule_lease_recovery(server
->nfs_client
);
4475 case -NFS4ERR_BADSESSION
:
4476 case -NFS4ERR_BADSLOT
:
4477 case -NFS4ERR_BAD_HIGH_SLOT
:
4478 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4479 case -NFS4ERR_DEADSESSION
:
4480 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
4484 * The show must go on: exit, but mark the
4485 * stateid as needing recovery.
4487 case -NFS4ERR_ADMIN_REVOKED
:
4488 case -NFS4ERR_BAD_STATEID
:
4489 case -NFS4ERR_OPENMODE
:
4490 nfs4_schedule_stateid_recovery(server
, state
);
4495 * User RPCSEC_GSS context has expired.
4496 * We cannot recover this stateid now, so
4497 * skip it and allow recovery thread to
4503 case -NFS4ERR_DENIED
:
4504 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4507 case -NFS4ERR_DELAY
:
4510 err
= nfs4_handle_exception(server
, err
, &exception
);
4511 } while (exception
.retry
);
4516 static void nfs4_release_lockowner_release(void *calldata
)
4521 const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4522 .rpc_release
= nfs4_release_lockowner_release
,
4525 void nfs4_release_lockowner(const struct nfs4_lock_state
*lsp
)
4527 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4528 struct nfs_release_lockowner_args
*args
;
4529 struct rpc_message msg
= {
4530 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4533 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
4535 args
= kmalloc(sizeof(*args
), GFP_NOFS
);
4538 args
->lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4539 args
->lock_owner
.id
= lsp
->ls_id
.id
;
4540 args
->lock_owner
.s_dev
= server
->s_dev
;
4541 msg
.rpc_argp
= args
;
4542 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, args
);
4545 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4547 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
4548 const void *buf
, size_t buflen
,
4549 int flags
, int type
)
4551 if (strcmp(key
, "") != 0)
4554 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
4557 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
4558 void *buf
, size_t buflen
, int type
)
4560 if (strcmp(key
, "") != 0)
4563 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
4566 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
4567 size_t list_len
, const char *name
,
4568 size_t name_len
, int type
)
4570 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
4572 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4575 if (list
&& len
<= list_len
)
4576 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
4580 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4582 if (!((fattr
->valid
& NFS_ATTR_FATTR_FILEID
) &&
4583 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4584 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4587 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4588 NFS_ATTR_FATTR_NLINK
;
4589 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4593 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4594 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4596 struct nfs_server
*server
= NFS_SERVER(dir
);
4598 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4599 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
4601 struct nfs4_fs_locations_arg args
= {
4602 .dir_fh
= NFS_FH(dir
),
4607 struct nfs4_fs_locations_res res
= {
4608 .fs_locations
= fs_locations
,
4610 struct rpc_message msg
= {
4611 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4617 dprintk("%s: start\n", __func__
);
4618 nfs_fattr_init(&fs_locations
->fattr
);
4619 fs_locations
->server
= server
;
4620 fs_locations
->nlocations
= 0;
4621 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
4622 nfs_fixup_referral_attributes(&fs_locations
->fattr
);
4623 dprintk("%s: returned status = %d\n", __func__
, status
);
4627 #ifdef CONFIG_NFS_V4_1
4629 * Check the exchange flags returned by the server for invalid flags, having
4630 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
4633 static int nfs4_check_cl_exchange_flags(u32 flags
)
4635 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
4637 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
4638 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
4640 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
4644 return -NFS4ERR_INVAL
;
4648 * nfs4_proc_exchange_id()
4650 * Since the clientid has expired, all compounds using sessions
4651 * associated with the stale clientid will be returning
4652 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4653 * be in some phase of session reset.
4655 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4657 nfs4_verifier verifier
;
4658 struct nfs41_exchange_id_args args
= {
4660 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
4662 struct nfs41_exchange_id_res res
= {
4666 struct rpc_message msg
= {
4667 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4674 dprintk("--> %s\n", __func__
);
4675 BUG_ON(clp
== NULL
);
4677 p
= (u32
*)verifier
.data
;
4678 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4679 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4680 args
.verifier
= &verifier
;
4682 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4685 init_utsname()->nodename
,
4686 init_utsname()->domainname
,
4687 clp
->cl_rpcclient
->cl_auth
->au_flavor
);
4689 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
4691 status
= nfs4_check_cl_exchange_flags(clp
->cl_exchange_flags
);
4692 dprintk("<-- %s status= %d\n", __func__
, status
);
4696 struct nfs4_get_lease_time_data
{
4697 struct nfs4_get_lease_time_args
*args
;
4698 struct nfs4_get_lease_time_res
*res
;
4699 struct nfs_client
*clp
;
4702 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4706 struct nfs4_get_lease_time_data
*data
=
4707 (struct nfs4_get_lease_time_data
*)calldata
;
4709 dprintk("--> %s\n", __func__
);
4710 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4711 /* just setup sequence, do not trigger session recovery
4712 since we're invoked within one */
4713 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4714 &data
->args
->la_seq_args
,
4715 &data
->res
->lr_seq_res
, 0, task
);
4717 BUG_ON(ret
== -EAGAIN
);
4718 rpc_call_start(task
);
4719 dprintk("<-- %s\n", __func__
);
4723 * Called from nfs4_state_manager thread for session setup, so don't recover
4724 * from sequence operation or clientid errors.
4726 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4728 struct nfs4_get_lease_time_data
*data
=
4729 (struct nfs4_get_lease_time_data
*)calldata
;
4731 dprintk("--> %s\n", __func__
);
4732 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
4734 switch (task
->tk_status
) {
4735 case -NFS4ERR_DELAY
:
4736 case -NFS4ERR_GRACE
:
4737 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
4738 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
4739 task
->tk_status
= 0;
4740 nfs_restart_rpc(task
, data
->clp
);
4743 dprintk("<-- %s\n", __func__
);
4746 struct rpc_call_ops nfs4_get_lease_time_ops
= {
4747 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
4748 .rpc_call_done
= nfs4_get_lease_time_done
,
4751 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
4753 struct rpc_task
*task
;
4754 struct nfs4_get_lease_time_args args
;
4755 struct nfs4_get_lease_time_res res
= {
4756 .lr_fsinfo
= fsinfo
,
4758 struct nfs4_get_lease_time_data data
= {
4763 struct rpc_message msg
= {
4764 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
4768 struct rpc_task_setup task_setup
= {
4769 .rpc_client
= clp
->cl_rpcclient
,
4770 .rpc_message
= &msg
,
4771 .callback_ops
= &nfs4_get_lease_time_ops
,
4772 .callback_data
= &data
4776 dprintk("--> %s\n", __func__
);
4777 task
= rpc_run_task(&task_setup
);
4780 status
= PTR_ERR(task
);
4782 status
= task
->tk_status
;
4785 dprintk("<-- %s return %d\n", __func__
, status
);
4791 * Reset a slot table
4793 static int nfs4_reset_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
4796 struct nfs4_slot
*new = NULL
;
4800 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
4801 max_reqs
, tbl
->max_slots
);
4803 /* Does the newly negotiated max_reqs match the existing slot table? */
4804 if (max_reqs
!= tbl
->max_slots
) {
4806 new = kmalloc(max_reqs
* sizeof(struct nfs4_slot
),
4813 spin_lock(&tbl
->slot_tbl_lock
);
4816 tbl
->max_slots
= max_reqs
;
4818 for (i
= 0; i
< tbl
->max_slots
; ++i
)
4819 tbl
->slots
[i
].seq_nr
= ivalue
;
4820 spin_unlock(&tbl
->slot_tbl_lock
);
4821 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4822 tbl
, tbl
->slots
, tbl
->max_slots
);
4824 dprintk("<-- %s: return %d\n", __func__
, ret
);
4829 * Reset the forechannel and backchannel slot tables
4831 static int nfs4_reset_slot_tables(struct nfs4_session
*session
)
4835 status
= nfs4_reset_slot_table(&session
->fc_slot_table
,
4836 session
->fc_attrs
.max_reqs
, 1);
4840 status
= nfs4_reset_slot_table(&session
->bc_slot_table
,
4841 session
->bc_attrs
.max_reqs
, 0);
4845 /* Destroy the slot table */
4846 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
4848 if (session
->fc_slot_table
.slots
!= NULL
) {
4849 kfree(session
->fc_slot_table
.slots
);
4850 session
->fc_slot_table
.slots
= NULL
;
4852 if (session
->bc_slot_table
.slots
!= NULL
) {
4853 kfree(session
->bc_slot_table
.slots
);
4854 session
->bc_slot_table
.slots
= NULL
;
4860 * Initialize slot table
4862 static int nfs4_init_slot_table(struct nfs4_slot_table
*tbl
,
4863 int max_slots
, int ivalue
)
4865 struct nfs4_slot
*slot
;
4868 BUG_ON(max_slots
> NFS4_MAX_SLOT_TABLE
);
4870 dprintk("--> %s: max_reqs=%u\n", __func__
, max_slots
);
4872 slot
= kcalloc(max_slots
, sizeof(struct nfs4_slot
), GFP_NOFS
);
4877 spin_lock(&tbl
->slot_tbl_lock
);
4878 tbl
->max_slots
= max_slots
;
4880 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
4881 spin_unlock(&tbl
->slot_tbl_lock
);
4882 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4883 tbl
, tbl
->slots
, tbl
->max_slots
);
4885 dprintk("<-- %s: return %d\n", __func__
, ret
);
4890 * Initialize the forechannel and backchannel tables
4892 static int nfs4_init_slot_tables(struct nfs4_session
*session
)
4894 struct nfs4_slot_table
*tbl
;
4897 tbl
= &session
->fc_slot_table
;
4898 if (tbl
->slots
== NULL
) {
4899 status
= nfs4_init_slot_table(tbl
,
4900 session
->fc_attrs
.max_reqs
, 1);
4905 tbl
= &session
->bc_slot_table
;
4906 if (tbl
->slots
== NULL
) {
4907 status
= nfs4_init_slot_table(tbl
,
4908 session
->bc_attrs
.max_reqs
, 0);
4910 nfs4_destroy_slot_tables(session
);
4916 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
4918 struct nfs4_session
*session
;
4919 struct nfs4_slot_table
*tbl
;
4921 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
4925 tbl
= &session
->fc_slot_table
;
4926 tbl
->highest_used_slotid
= -1;
4927 spin_lock_init(&tbl
->slot_tbl_lock
);
4928 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
4929 init_completion(&tbl
->complete
);
4931 tbl
= &session
->bc_slot_table
;
4932 tbl
->highest_used_slotid
= -1;
4933 spin_lock_init(&tbl
->slot_tbl_lock
);
4934 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
4935 init_completion(&tbl
->complete
);
4937 session
->session_state
= 1<<NFS4_SESSION_INITING
;
4943 void nfs4_destroy_session(struct nfs4_session
*session
)
4945 nfs4_proc_destroy_session(session
);
4946 dprintk("%s Destroy backchannel for xprt %p\n",
4947 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
4948 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
4949 NFS41_BC_MIN_CALLBACKS
);
4950 nfs4_destroy_slot_tables(session
);
4955 * Initialize the values to be used by the client in CREATE_SESSION
4956 * If nfs4_init_session set the fore channel request and response sizes,
4959 * Set the back channel max_resp_sz_cached to zero to force the client to
4960 * always set csa_cachethis to FALSE because the current implementation
4961 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
4963 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
4965 struct nfs4_session
*session
= args
->client
->cl_session
;
4966 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
4967 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
4970 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
4972 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
4973 /* Fore channel attributes */
4974 args
->fc_attrs
.headerpadsz
= 0;
4975 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
4976 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
4977 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
4978 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
4980 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
4981 "max_ops=%u max_reqs=%u\n",
4983 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
4984 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
4986 /* Back channel attributes */
4987 args
->bc_attrs
.headerpadsz
= 0;
4988 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
4989 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
4990 args
->bc_attrs
.max_resp_sz_cached
= 0;
4991 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
4992 args
->bc_attrs
.max_reqs
= 1;
4994 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
4995 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4997 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
4998 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
4999 args
->bc_attrs
.max_reqs
);
5002 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5004 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5005 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5007 if (rcvd
->headerpadsz
> sent
->headerpadsz
)
5009 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5012 * Our requested max_ops is the minimum we need; we're not
5013 * prepared to break up compounds into smaller pieces than that.
5014 * So, no point even trying to continue if the server won't
5017 if (rcvd
->max_ops
< sent
->max_ops
)
5019 if (rcvd
->max_reqs
== 0)
5024 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5026 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5027 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5029 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5031 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5033 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5035 /* These would render the backchannel useless: */
5036 if (rcvd
->max_ops
== 0)
5038 if (rcvd
->max_reqs
== 0)
5043 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5044 struct nfs4_session
*session
)
5048 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5051 return nfs4_verify_back_channel_attrs(args
, session
);
5054 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
5056 struct nfs4_session
*session
= clp
->cl_session
;
5057 struct nfs41_create_session_args args
= {
5059 .cb_program
= NFS4_CALLBACK
,
5061 struct nfs41_create_session_res res
= {
5064 struct rpc_message msg
= {
5065 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5071 nfs4_init_channel_attrs(&args
);
5072 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5074 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
5077 /* Verify the session's negotiated channel_attrs values */
5078 status
= nfs4_verify_channel_attrs(&args
, session
);
5080 /* Increment the clientid slot sequence id */
5088 * Issues a CREATE_SESSION operation to the server.
5089 * It is the responsibility of the caller to verify the session is
5090 * expired before calling this routine.
5092 int nfs4_proc_create_session(struct nfs_client
*clp
)
5096 struct nfs4_session
*session
= clp
->cl_session
;
5100 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5103 status
= _nfs4_proc_create_session(clp
);
5104 if (status
== -NFS4ERR_DELAY
) {
5105 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
5109 } while (status
== -NFS4ERR_DELAY
);
5114 /* Init and reset the fore channel */
5115 status
= nfs4_init_slot_tables(session
);
5116 dprintk("slot table initialization returned %d\n", status
);
5119 status
= nfs4_reset_slot_tables(session
);
5120 dprintk("slot table reset returned %d\n", status
);
5124 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5125 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5126 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5128 dprintk("<-- %s\n", __func__
);
5133 * Issue the over-the-wire RPC DESTROY_SESSION.
5134 * The caller must serialize access to this routine.
5136 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
5139 struct rpc_message msg
;
5141 dprintk("--> nfs4_proc_destroy_session\n");
5143 /* session is still being setup */
5144 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5147 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
5148 msg
.rpc_argp
= session
;
5149 msg
.rpc_resp
= NULL
;
5150 msg
.rpc_cred
= NULL
;
5151 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
5155 "Got error %d from the server on DESTROY_SESSION. "
5156 "Session has been destroyed regardless...\n", status
);
5158 dprintk("<-- nfs4_proc_destroy_session\n");
5162 int nfs4_init_session(struct nfs_server
*server
)
5164 struct nfs_client
*clp
= server
->nfs_client
;
5165 struct nfs4_session
*session
;
5166 unsigned int rsize
, wsize
;
5169 if (!nfs4_has_session(clp
))
5172 session
= clp
->cl_session
;
5173 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5176 rsize
= server
->rsize
;
5178 rsize
= NFS_MAX_FILE_IO_SIZE
;
5179 wsize
= server
->wsize
;
5181 wsize
= NFS_MAX_FILE_IO_SIZE
;
5183 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5184 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5186 ret
= nfs4_recover_expired_lease(server
);
5188 ret
= nfs4_check_client_ready(clp
);
5192 int nfs4_init_ds_session(struct nfs_client
*clp
)
5194 struct nfs4_session
*session
= clp
->cl_session
;
5197 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5200 ret
= nfs4_client_recover_expired_lease(clp
);
5202 /* Test for the DS role */
5203 if (!is_ds_client(clp
))
5206 ret
= nfs4_check_client_ready(clp
);
5210 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5214 * Renew the cl_session lease.
5216 struct nfs4_sequence_data
{
5217 struct nfs_client
*clp
;
5218 struct nfs4_sequence_args args
;
5219 struct nfs4_sequence_res res
;
5222 static void nfs41_sequence_release(void *data
)
5224 struct nfs4_sequence_data
*calldata
= data
;
5225 struct nfs_client
*clp
= calldata
->clp
;
5227 if (atomic_read(&clp
->cl_count
) > 1)
5228 nfs4_schedule_state_renewal(clp
);
5229 nfs_put_client(clp
);
5233 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5235 switch(task
->tk_status
) {
5236 case -NFS4ERR_DELAY
:
5237 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5240 nfs4_schedule_lease_recovery(clp
);
5245 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5247 struct nfs4_sequence_data
*calldata
= data
;
5248 struct nfs_client
*clp
= calldata
->clp
;
5250 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5253 if (task
->tk_status
< 0) {
5254 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5255 if (atomic_read(&clp
->cl_count
) == 1)
5258 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5259 rpc_restart_call_prepare(task
);
5263 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5265 dprintk("<-- %s\n", __func__
);
5268 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5270 struct nfs4_sequence_data
*calldata
= data
;
5271 struct nfs_client
*clp
= calldata
->clp
;
5272 struct nfs4_sequence_args
*args
;
5273 struct nfs4_sequence_res
*res
;
5275 args
= task
->tk_msg
.rpc_argp
;
5276 res
= task
->tk_msg
.rpc_resp
;
5278 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, 0, task
))
5280 rpc_call_start(task
);
5283 static const struct rpc_call_ops nfs41_sequence_ops
= {
5284 .rpc_call_done
= nfs41_sequence_call_done
,
5285 .rpc_call_prepare
= nfs41_sequence_prepare
,
5286 .rpc_release
= nfs41_sequence_release
,
5289 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5291 struct nfs4_sequence_data
*calldata
;
5292 struct rpc_message msg
= {
5293 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5296 struct rpc_task_setup task_setup_data
= {
5297 .rpc_client
= clp
->cl_rpcclient
,
5298 .rpc_message
= &msg
,
5299 .callback_ops
= &nfs41_sequence_ops
,
5300 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5303 if (!atomic_inc_not_zero(&clp
->cl_count
))
5304 return ERR_PTR(-EIO
);
5305 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5306 if (calldata
== NULL
) {
5307 nfs_put_client(clp
);
5308 return ERR_PTR(-ENOMEM
);
5310 msg
.rpc_argp
= &calldata
->args
;
5311 msg
.rpc_resp
= &calldata
->res
;
5312 calldata
->clp
= clp
;
5313 task_setup_data
.callback_data
= calldata
;
5315 return rpc_run_task(&task_setup_data
);
5318 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5320 struct rpc_task
*task
;
5323 task
= _nfs41_proc_sequence(clp
, cred
);
5325 ret
= PTR_ERR(task
);
5327 rpc_put_task_async(task
);
5328 dprintk("<-- %s status=%d\n", __func__
, ret
);
5332 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5334 struct rpc_task
*task
;
5337 task
= _nfs41_proc_sequence(clp
, cred
);
5339 ret
= PTR_ERR(task
);
5342 ret
= rpc_wait_for_completion_task(task
);
5344 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5346 if (task
->tk_status
== 0)
5347 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5348 ret
= task
->tk_status
;
5352 dprintk("<-- %s status=%d\n", __func__
, ret
);
5356 struct nfs4_reclaim_complete_data
{
5357 struct nfs_client
*clp
;
5358 struct nfs41_reclaim_complete_args arg
;
5359 struct nfs41_reclaim_complete_res res
;
5362 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5364 struct nfs4_reclaim_complete_data
*calldata
= data
;
5366 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5367 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5368 &calldata
->arg
.seq_args
,
5369 &calldata
->res
.seq_res
, 0, task
))
5372 rpc_call_start(task
);
5375 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5377 switch(task
->tk_status
) {
5379 case -NFS4ERR_COMPLETE_ALREADY
:
5380 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5382 case -NFS4ERR_DELAY
:
5383 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5386 nfs4_schedule_lease_recovery(clp
);
5391 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5393 struct nfs4_reclaim_complete_data
*calldata
= data
;
5394 struct nfs_client
*clp
= calldata
->clp
;
5395 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5397 dprintk("--> %s\n", __func__
);
5398 if (!nfs41_sequence_done(task
, res
))
5401 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5402 rpc_restart_call_prepare(task
);
5405 dprintk("<-- %s\n", __func__
);
5408 static void nfs4_free_reclaim_complete_data(void *data
)
5410 struct nfs4_reclaim_complete_data
*calldata
= data
;
5415 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5416 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5417 .rpc_call_done
= nfs4_reclaim_complete_done
,
5418 .rpc_release
= nfs4_free_reclaim_complete_data
,
5422 * Issue a global reclaim complete.
5424 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5426 struct nfs4_reclaim_complete_data
*calldata
;
5427 struct rpc_task
*task
;
5428 struct rpc_message msg
= {
5429 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5431 struct rpc_task_setup task_setup_data
= {
5432 .rpc_client
= clp
->cl_rpcclient
,
5433 .rpc_message
= &msg
,
5434 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5435 .flags
= RPC_TASK_ASYNC
,
5437 int status
= -ENOMEM
;
5439 dprintk("--> %s\n", __func__
);
5440 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5441 if (calldata
== NULL
)
5443 calldata
->clp
= clp
;
5444 calldata
->arg
.one_fs
= 0;
5446 msg
.rpc_argp
= &calldata
->arg
;
5447 msg
.rpc_resp
= &calldata
->res
;
5448 task_setup_data
.callback_data
= calldata
;
5449 task
= rpc_run_task(&task_setup_data
);
5451 status
= PTR_ERR(task
);
5454 status
= nfs4_wait_for_completion_rpc_task(task
);
5456 status
= task
->tk_status
;
5460 dprintk("<-- %s status=%d\n", __func__
, status
);
5465 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
5467 struct nfs4_layoutget
*lgp
= calldata
;
5468 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5470 dprintk("--> %s\n", __func__
);
5471 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
5472 * right now covering the LAYOUTGET we are about to send.
5473 * However, that is not so catastrophic, and there seems
5474 * to be no way to prevent it completely.
5476 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
5477 &lgp
->res
.seq_res
, 0, task
))
5479 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
5480 NFS_I(lgp
->args
.inode
)->layout
,
5481 lgp
->args
.ctx
->state
)) {
5482 rpc_exit(task
, NFS4_OK
);
5485 rpc_call_start(task
);
5488 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
5490 struct nfs4_layoutget
*lgp
= calldata
;
5491 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5493 dprintk("--> %s\n", __func__
);
5495 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
5498 switch (task
->tk_status
) {
5501 case -NFS4ERR_LAYOUTTRYLATER
:
5502 case -NFS4ERR_RECALLCONFLICT
:
5503 task
->tk_status
= -NFS4ERR_DELAY
;
5506 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5507 rpc_restart_call_prepare(task
);
5511 dprintk("<-- %s\n", __func__
);
5514 static void nfs4_layoutget_release(void *calldata
)
5516 struct nfs4_layoutget
*lgp
= calldata
;
5518 dprintk("--> %s\n", __func__
);
5519 if (lgp
->res
.layout
.buf
!= NULL
)
5520 free_page((unsigned long) lgp
->res
.layout
.buf
);
5521 put_nfs_open_context(lgp
->args
.ctx
);
5523 dprintk("<-- %s\n", __func__
);
5526 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
5527 .rpc_call_prepare
= nfs4_layoutget_prepare
,
5528 .rpc_call_done
= nfs4_layoutget_done
,
5529 .rpc_release
= nfs4_layoutget_release
,
5532 int nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
)
5534 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5535 struct rpc_task
*task
;
5536 struct rpc_message msg
= {
5537 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
5538 .rpc_argp
= &lgp
->args
,
5539 .rpc_resp
= &lgp
->res
,
5541 struct rpc_task_setup task_setup_data
= {
5542 .rpc_client
= server
->client
,
5543 .rpc_message
= &msg
,
5544 .callback_ops
= &nfs4_layoutget_call_ops
,
5545 .callback_data
= lgp
,
5546 .flags
= RPC_TASK_ASYNC
,
5550 dprintk("--> %s\n", __func__
);
5552 lgp
->res
.layout
.buf
= (void *)__get_free_page(GFP_NOFS
);
5553 if (lgp
->res
.layout
.buf
== NULL
) {
5554 nfs4_layoutget_release(lgp
);
5558 lgp
->res
.seq_res
.sr_slot
= NULL
;
5559 task
= rpc_run_task(&task_setup_data
);
5561 return PTR_ERR(task
);
5562 status
= nfs4_wait_for_completion_rpc_task(task
);
5564 status
= task
->tk_status
;
5566 status
= pnfs_layout_process(lgp
);
5568 dprintk("<-- %s status=%d\n", __func__
, status
);
5573 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5575 struct nfs4_getdeviceinfo_args args
= {
5578 struct nfs4_getdeviceinfo_res res
= {
5581 struct rpc_message msg
= {
5582 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
5588 dprintk("--> %s\n", __func__
);
5589 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
5590 dprintk("<-- %s status=%d\n", __func__
, status
);
5595 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5597 struct nfs4_exception exception
= { };
5601 err
= nfs4_handle_exception(server
,
5602 _nfs4_proc_getdeviceinfo(server
, pdev
),
5604 } while (exception
.retry
);
5607 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
5609 #endif /* CONFIG_NFS_V4_1 */
5611 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
5612 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5613 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5614 .recover_open
= nfs4_open_reclaim
,
5615 .recover_lock
= nfs4_lock_reclaim
,
5616 .establish_clid
= nfs4_init_clientid
,
5617 .get_clid_cred
= nfs4_get_setclientid_cred
,
5620 #if defined(CONFIG_NFS_V4_1)
5621 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
5622 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5623 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5624 .recover_open
= nfs4_open_reclaim
,
5625 .recover_lock
= nfs4_lock_reclaim
,
5626 .establish_clid
= nfs41_init_clientid
,
5627 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5628 .reclaim_complete
= nfs41_proc_reclaim_complete
,
5630 #endif /* CONFIG_NFS_V4_1 */
5632 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
5633 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5634 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5635 .recover_open
= nfs4_open_expired
,
5636 .recover_lock
= nfs4_lock_expired
,
5637 .establish_clid
= nfs4_init_clientid
,
5638 .get_clid_cred
= nfs4_get_setclientid_cred
,
5641 #if defined(CONFIG_NFS_V4_1)
5642 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
5643 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5644 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5645 .recover_open
= nfs4_open_expired
,
5646 .recover_lock
= nfs4_lock_expired
,
5647 .establish_clid
= nfs41_init_clientid
,
5648 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5650 #endif /* CONFIG_NFS_V4_1 */
5652 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
5653 .sched_state_renewal
= nfs4_proc_async_renew
,
5654 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
5655 .renew_lease
= nfs4_proc_renew
,
5658 #if defined(CONFIG_NFS_V4_1)
5659 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
5660 .sched_state_renewal
= nfs41_proc_async_sequence
,
5661 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
5662 .renew_lease
= nfs4_proc_sequence
,
5666 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
5668 .call_sync
= _nfs4_call_sync
,
5669 .validate_stateid
= nfs4_validate_delegation_stateid
,
5670 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
5671 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
5672 .state_renewal_ops
= &nfs40_state_renewal_ops
,
5675 #if defined(CONFIG_NFS_V4_1)
5676 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
5678 .call_sync
= _nfs4_call_sync_session
,
5679 .validate_stateid
= nfs41_validate_delegation_stateid
,
5680 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
5681 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
5682 .state_renewal_ops
= &nfs41_state_renewal_ops
,
5686 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
5687 [0] = &nfs_v4_0_minor_ops
,
5688 #if defined(CONFIG_NFS_V4_1)
5689 [1] = &nfs_v4_1_minor_ops
,
5693 static const struct inode_operations nfs4_file_inode_operations
= {
5694 .permission
= nfs_permission
,
5695 .getattr
= nfs_getattr
,
5696 .setattr
= nfs_setattr
,
5697 .getxattr
= generic_getxattr
,
5698 .setxattr
= generic_setxattr
,
5699 .listxattr
= generic_listxattr
,
5700 .removexattr
= generic_removexattr
,
5703 const struct nfs_rpc_ops nfs_v4_clientops
= {
5704 .version
= 4, /* protocol version */
5705 .dentry_ops
= &nfs4_dentry_operations
,
5706 .dir_inode_ops
= &nfs4_dir_inode_operations
,
5707 .file_inode_ops
= &nfs4_file_inode_operations
,
5708 .getroot
= nfs4_proc_get_root
,
5709 .getattr
= nfs4_proc_getattr
,
5710 .setattr
= nfs4_proc_setattr
,
5711 .lookupfh
= nfs4_proc_lookupfh
,
5712 .lookup
= nfs4_proc_lookup
,
5713 .access
= nfs4_proc_access
,
5714 .readlink
= nfs4_proc_readlink
,
5715 .create
= nfs4_proc_create
,
5716 .remove
= nfs4_proc_remove
,
5717 .unlink_setup
= nfs4_proc_unlink_setup
,
5718 .unlink_done
= nfs4_proc_unlink_done
,
5719 .rename
= nfs4_proc_rename
,
5720 .rename_setup
= nfs4_proc_rename_setup
,
5721 .rename_done
= nfs4_proc_rename_done
,
5722 .link
= nfs4_proc_link
,
5723 .symlink
= nfs4_proc_symlink
,
5724 .mkdir
= nfs4_proc_mkdir
,
5725 .rmdir
= nfs4_proc_remove
,
5726 .readdir
= nfs4_proc_readdir
,
5727 .mknod
= nfs4_proc_mknod
,
5728 .statfs
= nfs4_proc_statfs
,
5729 .fsinfo
= nfs4_proc_fsinfo
,
5730 .pathconf
= nfs4_proc_pathconf
,
5731 .set_capabilities
= nfs4_server_capabilities
,
5732 .decode_dirent
= nfs4_decode_dirent
,
5733 .read_setup
= nfs4_proc_read_setup
,
5734 .read_done
= nfs4_read_done
,
5735 .write_setup
= nfs4_proc_write_setup
,
5736 .write_done
= nfs4_write_done
,
5737 .commit_setup
= nfs4_proc_commit_setup
,
5738 .commit_done
= nfs4_commit_done
,
5739 .lock
= nfs4_proc_lock
,
5740 .clear_acl_cache
= nfs4_zap_acl_attr
,
5741 .close_context
= nfs4_close_context
,
5742 .open_context
= nfs4_atomic_open
,
5743 .init_client
= nfs4_init_client
,
5746 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
5747 .prefix
= XATTR_NAME_NFSV4_ACL
,
5748 .list
= nfs4_xattr_list_nfs4_acl
,
5749 .get
= nfs4_xattr_get_nfs4_acl
,
5750 .set
= nfs4_xattr_set_nfs4_acl
,
5753 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
5754 &nfs4_xattr_nfs4_acl_handler
,