4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/sunrpc/gss_api.h>
47 #include <linux/nfs.h>
48 #include <linux/nfs4.h>
49 #include <linux/nfs_fs.h>
50 #include <linux/nfs_page.h>
51 #include <linux/nfs_mount.h>
52 #include <linux/namei.h>
53 #include <linux/mount.h>
54 #include <linux/module.h>
55 #include <linux/sunrpc/bc_xprt.h>
56 #include <linux/xattr.h>
57 #include <linux/utsname.h>
60 #include "delegation.h"
66 #define NFSDBG_FACILITY NFSDBG_PROC
68 #define NFS4_POLL_RETRY_MIN (HZ/10)
69 #define NFS4_POLL_RETRY_MAX (15*HZ)
71 #define NFS4_MAX_LOOP_ON_RECOVER (10)
74 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
75 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
76 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
77 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
78 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
79 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
80 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
81 struct nfs4_state
*state
);
82 #ifdef CONFIG_NFS_V4_1
83 static int nfs41_test_stateid(struct nfs_server
*, struct nfs4_state
*);
84 static int nfs41_free_stateid(struct nfs_server
*, struct nfs4_state
*);
86 /* Prevent leaks of NFSv4 errors into userland */
87 static int nfs4_map_errors(int err
)
92 case -NFS4ERR_RESOURCE
:
94 case -NFS4ERR_WRONGSEC
:
96 case -NFS4ERR_BADOWNER
:
97 case -NFS4ERR_BADNAME
:
100 dprintk("%s could not handle NFSv4 error %d\n",
108 * This is our standard bitmap for GETATTR requests.
110 const u32 nfs4_fattr_bitmap
[2] = {
112 | FATTR4_WORD0_CHANGE
115 | FATTR4_WORD0_FILEID
,
117 | FATTR4_WORD1_NUMLINKS
119 | FATTR4_WORD1_OWNER_GROUP
120 | FATTR4_WORD1_RAWDEV
121 | FATTR4_WORD1_SPACE_USED
122 | FATTR4_WORD1_TIME_ACCESS
123 | FATTR4_WORD1_TIME_METADATA
124 | FATTR4_WORD1_TIME_MODIFY
127 const u32 nfs4_statfs_bitmap
[2] = {
128 FATTR4_WORD0_FILES_AVAIL
129 | FATTR4_WORD0_FILES_FREE
130 | FATTR4_WORD0_FILES_TOTAL
,
131 FATTR4_WORD1_SPACE_AVAIL
132 | FATTR4_WORD1_SPACE_FREE
133 | FATTR4_WORD1_SPACE_TOTAL
136 const u32 nfs4_pathconf_bitmap
[2] = {
138 | FATTR4_WORD0_MAXNAME
,
142 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
143 | FATTR4_WORD0_MAXREAD
144 | FATTR4_WORD0_MAXWRITE
145 | FATTR4_WORD0_LEASE_TIME
,
146 FATTR4_WORD1_TIME_DELTA
147 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
148 FATTR4_WORD2_LAYOUT_BLKSIZE
151 const u32 nfs4_fs_locations_bitmap
[2] = {
153 | FATTR4_WORD0_CHANGE
156 | FATTR4_WORD0_FILEID
157 | FATTR4_WORD0_FS_LOCATIONS
,
159 | FATTR4_WORD1_NUMLINKS
161 | FATTR4_WORD1_OWNER_GROUP
162 | FATTR4_WORD1_RAWDEV
163 | FATTR4_WORD1_SPACE_USED
164 | FATTR4_WORD1_TIME_ACCESS
165 | FATTR4_WORD1_TIME_METADATA
166 | FATTR4_WORD1_TIME_MODIFY
167 | FATTR4_WORD1_MOUNTED_ON_FILEID
170 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
171 struct nfs4_readdir_arg
*readdir
)
175 BUG_ON(readdir
->count
< 80);
177 readdir
->cookie
= cookie
;
178 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
183 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
188 * NFSv4 servers do not return entries for '.' and '..'
189 * Therefore, we fake these entries here. We let '.'
190 * have cookie 0 and '..' have cookie 1. Note that
191 * when talking to the server, we always send cookie 0
194 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
197 *p
++ = xdr_one
; /* next */
198 *p
++ = xdr_zero
; /* cookie, first word */
199 *p
++ = xdr_one
; /* cookie, second word */
200 *p
++ = xdr_one
; /* entry len */
201 memcpy(p
, ".\0\0\0", 4); /* entry */
203 *p
++ = xdr_one
; /* bitmap length */
204 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
205 *p
++ = htonl(8); /* attribute buffer length */
206 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
209 *p
++ = xdr_one
; /* next */
210 *p
++ = xdr_zero
; /* cookie, first word */
211 *p
++ = xdr_two
; /* cookie, second word */
212 *p
++ = xdr_two
; /* entry len */
213 memcpy(p
, "..\0\0", 4); /* entry */
215 *p
++ = xdr_one
; /* bitmap length */
216 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
217 *p
++ = htonl(8); /* attribute buffer length */
218 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
220 readdir
->pgbase
= (char *)p
- (char *)start
;
221 readdir
->count
-= readdir
->pgbase
;
222 kunmap_atomic(start
, KM_USER0
);
225 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
231 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
232 nfs_wait_bit_killable
, TASK_KILLABLE
);
236 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
243 *timeout
= NFS4_POLL_RETRY_MIN
;
244 if (*timeout
> NFS4_POLL_RETRY_MAX
)
245 *timeout
= NFS4_POLL_RETRY_MAX
;
246 schedule_timeout_killable(*timeout
);
247 if (fatal_signal_pending(current
))
253 /* This is the error handling routine for processes that are allowed
256 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
258 struct nfs_client
*clp
= server
->nfs_client
;
259 struct nfs4_state
*state
= exception
->state
;
262 exception
->retry
= 0;
266 case -NFS4ERR_ADMIN_REVOKED
:
267 case -NFS4ERR_BAD_STATEID
:
268 case -NFS4ERR_OPENMODE
:
271 nfs4_schedule_stateid_recovery(server
, state
);
272 goto wait_on_recovery
;
273 case -NFS4ERR_EXPIRED
:
275 nfs4_schedule_stateid_recovery(server
, state
);
276 case -NFS4ERR_STALE_STATEID
:
277 case -NFS4ERR_STALE_CLIENTID
:
278 nfs4_schedule_lease_recovery(clp
);
279 goto wait_on_recovery
;
280 #if defined(CONFIG_NFS_V4_1)
281 case -NFS4ERR_BADSESSION
:
282 case -NFS4ERR_BADSLOT
:
283 case -NFS4ERR_BAD_HIGH_SLOT
:
284 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
285 case -NFS4ERR_DEADSESSION
:
286 case -NFS4ERR_SEQ_FALSE_RETRY
:
287 case -NFS4ERR_SEQ_MISORDERED
:
288 dprintk("%s ERROR: %d Reset session\n", __func__
,
290 nfs4_schedule_session_recovery(clp
->cl_session
);
291 exception
->retry
= 1;
293 #endif /* defined(CONFIG_NFS_V4_1) */
294 case -NFS4ERR_FILE_OPEN
:
295 if (exception
->timeout
> HZ
) {
296 /* We have retried a decent amount, time to
305 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
308 case -NFS4ERR_RETRY_UNCACHED_REP
:
309 case -NFS4ERR_OLD_STATEID
:
310 exception
->retry
= 1;
312 case -NFS4ERR_BADOWNER
:
313 /* The following works around a Linux server bug! */
314 case -NFS4ERR_BADNAME
:
315 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
316 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
317 exception
->retry
= 1;
318 printk(KERN_WARNING
"NFS: v4 server %s "
319 "does not accept raw "
321 "Reenabling the idmapper.\n",
322 server
->nfs_client
->cl_hostname
);
325 /* We failed to handle the error */
326 return nfs4_map_errors(ret
);
328 ret
= nfs4_wait_clnt_recover(clp
);
330 exception
->retry
= 1;
335 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
337 spin_lock(&clp
->cl_lock
);
338 if (time_before(clp
->cl_last_renewal
,timestamp
))
339 clp
->cl_last_renewal
= timestamp
;
340 spin_unlock(&clp
->cl_lock
);
343 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
345 do_renew_lease(server
->nfs_client
, timestamp
);
348 #if defined(CONFIG_NFS_V4_1)
351 * nfs4_free_slot - free a slot and efficiently update slot table.
353 * freeing a slot is trivially done by clearing its respective bit
355 * If the freed slotid equals highest_used_slotid we want to update it
356 * so that the server would be able to size down the slot table if needed,
357 * otherwise we know that the highest_used_slotid is still in use.
358 * When updating highest_used_slotid there may be "holes" in the bitmap
359 * so we need to scan down from highest_used_slotid to 0 looking for the now
360 * highest slotid in use.
361 * If none found, highest_used_slotid is set to -1.
363 * Must be called while holding tbl->slot_tbl_lock
366 nfs4_free_slot(struct nfs4_slot_table
*tbl
, struct nfs4_slot
*free_slot
)
368 int free_slotid
= free_slot
- tbl
->slots
;
369 int slotid
= free_slotid
;
371 BUG_ON(slotid
< 0 || slotid
>= NFS4_MAX_SLOT_TABLE
);
372 /* clear used bit in bitmap */
373 __clear_bit(slotid
, tbl
->used_slots
);
375 /* update highest_used_slotid when it is freed */
376 if (slotid
== tbl
->highest_used_slotid
) {
377 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
378 if (slotid
< tbl
->max_slots
)
379 tbl
->highest_used_slotid
= slotid
;
381 tbl
->highest_used_slotid
= -1;
383 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
384 free_slotid
, tbl
->highest_used_slotid
);
388 * Signal state manager thread if session fore channel is drained
390 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
392 struct rpc_task
*task
;
394 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
395 task
= rpc_wake_up_next(&ses
->fc_slot_table
.slot_tbl_waitq
);
397 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
401 if (ses
->fc_slot_table
.highest_used_slotid
!= -1)
404 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
405 complete(&ses
->fc_slot_table
.complete
);
409 * Signal state manager thread if session back channel is drained
411 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
413 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
414 ses
->bc_slot_table
.highest_used_slotid
!= -1)
416 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
417 complete(&ses
->bc_slot_table
.complete
);
420 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
422 struct nfs4_slot_table
*tbl
;
424 tbl
= &res
->sr_session
->fc_slot_table
;
426 /* just wake up the next guy waiting since
427 * we may have not consumed a slot after all */
428 dprintk("%s: No slot\n", __func__
);
432 spin_lock(&tbl
->slot_tbl_lock
);
433 nfs4_free_slot(tbl
, res
->sr_slot
);
434 nfs4_check_drain_fc_complete(res
->sr_session
);
435 spin_unlock(&tbl
->slot_tbl_lock
);
439 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
441 unsigned long timestamp
;
442 struct nfs_client
*clp
;
445 * sr_status remains 1 if an RPC level error occurred. The server
446 * may or may not have processed the sequence operation..
447 * Proceed as if the server received and processed the sequence
450 if (res
->sr_status
== 1)
451 res
->sr_status
= NFS_OK
;
453 /* don't increment the sequence number if the task wasn't sent */
454 if (!RPC_WAS_SENT(task
))
457 /* Check the SEQUENCE operation status */
458 switch (res
->sr_status
) {
460 /* Update the slot's sequence and clientid lease timer */
461 ++res
->sr_slot
->seq_nr
;
462 timestamp
= res
->sr_renewal_time
;
463 clp
= res
->sr_session
->clp
;
464 do_renew_lease(clp
, timestamp
);
465 /* Check sequence flags */
466 if (res
->sr_status_flags
!= 0)
467 nfs4_schedule_lease_recovery(clp
);
470 /* The server detected a resend of the RPC call and
471 * returned NFS4ERR_DELAY as per Section 2.10.6.2
474 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
476 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
477 res
->sr_slot
->seq_nr
);
480 /* Just update the slot sequence no. */
481 ++res
->sr_slot
->seq_nr
;
484 /* The session may be reset by one of the error handlers. */
485 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
486 nfs41_sequence_free_slot(res
);
489 if (!rpc_restart_call(task
))
491 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
495 static int nfs4_sequence_done(struct rpc_task
*task
,
496 struct nfs4_sequence_res
*res
)
498 if (res
->sr_session
== NULL
)
500 return nfs41_sequence_done(task
, res
);
504 * nfs4_find_slot - efficiently look for a free slot
506 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
507 * If found, we mark the slot as used, update the highest_used_slotid,
508 * and respectively set up the sequence operation args.
509 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
511 * Note: must be called with under the slot_tbl_lock.
514 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
517 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
518 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
520 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
521 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
523 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
524 if (slotid
>= tbl
->max_slots
)
526 __set_bit(slotid
, tbl
->used_slots
);
527 if (slotid
> tbl
->highest_used_slotid
)
528 tbl
->highest_used_slotid
= slotid
;
531 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
532 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
536 int nfs41_setup_sequence(struct nfs4_session
*session
,
537 struct nfs4_sequence_args
*args
,
538 struct nfs4_sequence_res
*res
,
540 struct rpc_task
*task
)
542 struct nfs4_slot
*slot
;
543 struct nfs4_slot_table
*tbl
;
546 dprintk("--> %s\n", __func__
);
547 /* slot already allocated? */
548 if (res
->sr_slot
!= NULL
)
551 tbl
= &session
->fc_slot_table
;
553 spin_lock(&tbl
->slot_tbl_lock
);
554 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
555 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
557 * The state manager will wait until the slot table is empty.
558 * Schedule the reset thread
560 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
561 spin_unlock(&tbl
->slot_tbl_lock
);
562 dprintk("%s Schedule Session Reset\n", __func__
);
566 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
567 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
568 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
569 spin_unlock(&tbl
->slot_tbl_lock
);
570 dprintk("%s enforce FIFO order\n", __func__
);
574 slotid
= nfs4_find_slot(tbl
);
575 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
576 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
577 spin_unlock(&tbl
->slot_tbl_lock
);
578 dprintk("<-- %s: no free slots\n", __func__
);
581 spin_unlock(&tbl
->slot_tbl_lock
);
583 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
584 slot
= tbl
->slots
+ slotid
;
585 args
->sa_session
= session
;
586 args
->sa_slotid
= slotid
;
587 args
->sa_cache_this
= cache_reply
;
589 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
591 res
->sr_session
= session
;
593 res
->sr_renewal_time
= jiffies
;
594 res
->sr_status_flags
= 0;
596 * sr_status is only set in decode_sequence, and so will remain
597 * set to 1 if an rpc level failure occurs.
602 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
604 int nfs4_setup_sequence(const struct nfs_server
*server
,
605 struct nfs4_sequence_args
*args
,
606 struct nfs4_sequence_res
*res
,
608 struct rpc_task
*task
)
610 struct nfs4_session
*session
= nfs4_get_session(server
);
613 if (session
== NULL
) {
614 args
->sa_session
= NULL
;
615 res
->sr_session
= NULL
;
619 dprintk("--> %s clp %p session %p sr_slot %td\n",
620 __func__
, session
->clp
, session
, res
->sr_slot
?
621 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
623 ret
= nfs41_setup_sequence(session
, args
, res
, cache_reply
,
626 dprintk("<-- %s status=%d\n", __func__
, ret
);
630 struct nfs41_call_sync_data
{
631 const struct nfs_server
*seq_server
;
632 struct nfs4_sequence_args
*seq_args
;
633 struct nfs4_sequence_res
*seq_res
;
637 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
639 struct nfs41_call_sync_data
*data
= calldata
;
641 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
643 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
644 data
->seq_res
, data
->cache_reply
, task
))
646 rpc_call_start(task
);
649 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
651 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
652 nfs41_call_sync_prepare(task
, calldata
);
655 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
657 struct nfs41_call_sync_data
*data
= calldata
;
659 nfs41_sequence_done(task
, data
->seq_res
);
662 struct rpc_call_ops nfs41_call_sync_ops
= {
663 .rpc_call_prepare
= nfs41_call_sync_prepare
,
664 .rpc_call_done
= nfs41_call_sync_done
,
667 struct rpc_call_ops nfs41_call_priv_sync_ops
= {
668 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
669 .rpc_call_done
= nfs41_call_sync_done
,
672 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
673 struct nfs_server
*server
,
674 struct rpc_message
*msg
,
675 struct nfs4_sequence_args
*args
,
676 struct nfs4_sequence_res
*res
,
681 struct rpc_task
*task
;
682 struct nfs41_call_sync_data data
= {
683 .seq_server
= server
,
686 .cache_reply
= cache_reply
,
688 struct rpc_task_setup task_setup
= {
691 .callback_ops
= &nfs41_call_sync_ops
,
692 .callback_data
= &data
697 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
698 task
= rpc_run_task(&task_setup
);
702 ret
= task
->tk_status
;
708 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
709 struct nfs_server
*server
,
710 struct rpc_message
*msg
,
711 struct nfs4_sequence_args
*args
,
712 struct nfs4_sequence_res
*res
,
715 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, cache_reply
, 0);
719 static int nfs4_sequence_done(struct rpc_task
*task
,
720 struct nfs4_sequence_res
*res
)
724 #endif /* CONFIG_NFS_V4_1 */
726 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
727 struct nfs_server
*server
,
728 struct rpc_message
*msg
,
729 struct nfs4_sequence_args
*args
,
730 struct nfs4_sequence_res
*res
,
733 args
->sa_session
= res
->sr_session
= NULL
;
734 return rpc_call_sync(clnt
, msg
, 0);
738 int nfs4_call_sync(struct rpc_clnt
*clnt
,
739 struct nfs_server
*server
,
740 struct rpc_message
*msg
,
741 struct nfs4_sequence_args
*args
,
742 struct nfs4_sequence_res
*res
,
745 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
746 args
, res
, cache_reply
);
749 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
751 struct nfs_inode
*nfsi
= NFS_I(dir
);
753 spin_lock(&dir
->i_lock
);
754 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
755 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
756 nfs_force_lookup_revalidate(dir
);
757 dir
->i_version
= cinfo
->after
;
758 spin_unlock(&dir
->i_lock
);
761 struct nfs4_opendata
{
763 struct nfs_openargs o_arg
;
764 struct nfs_openres o_res
;
765 struct nfs_open_confirmargs c_arg
;
766 struct nfs_open_confirmres c_res
;
767 struct nfs_fattr f_attr
;
768 struct nfs_fattr dir_attr
;
770 struct dentry
*dentry
;
771 struct nfs4_state_owner
*owner
;
772 struct nfs4_state
*state
;
774 unsigned long timestamp
;
775 unsigned int rpc_done
: 1;
781 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
783 p
->o_res
.f_attr
= &p
->f_attr
;
784 p
->o_res
.dir_attr
= &p
->dir_attr
;
785 p
->o_res
.seqid
= p
->o_arg
.seqid
;
786 p
->c_res
.seqid
= p
->c_arg
.seqid
;
787 p
->o_res
.server
= p
->o_arg
.server
;
788 nfs_fattr_init(&p
->f_attr
);
789 nfs_fattr_init(&p
->dir_attr
);
792 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
793 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
794 const struct iattr
*attrs
,
797 struct dentry
*parent
= dget_parent(dentry
);
798 struct inode
*dir
= parent
->d_inode
;
799 struct nfs_server
*server
= NFS_SERVER(dir
);
800 struct nfs4_opendata
*p
;
802 p
= kzalloc(sizeof(*p
), gfp_mask
);
805 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
806 if (p
->o_arg
.seqid
== NULL
)
808 nfs_sb_active(dentry
->d_sb
);
809 p
->dentry
= dget(dentry
);
812 atomic_inc(&sp
->so_count
);
813 p
->o_arg
.fh
= NFS_FH(dir
);
814 p
->o_arg
.open_flags
= flags
;
815 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
816 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
817 p
->o_arg
.id
= sp
->so_owner_id
.id
;
818 p
->o_arg
.name
= &dentry
->d_name
;
819 p
->o_arg
.server
= server
;
820 p
->o_arg
.bitmask
= server
->attr_bitmask
;
821 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
822 if (flags
& O_CREAT
) {
825 p
->o_arg
.u
.attrs
= &p
->attrs
;
826 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
827 s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
831 p
->c_arg
.fh
= &p
->o_res
.fh
;
832 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
833 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
834 nfs4_init_opendata_res(p
);
844 static void nfs4_opendata_free(struct kref
*kref
)
846 struct nfs4_opendata
*p
= container_of(kref
,
847 struct nfs4_opendata
, kref
);
848 struct super_block
*sb
= p
->dentry
->d_sb
;
850 nfs_free_seqid(p
->o_arg
.seqid
);
851 if (p
->state
!= NULL
)
852 nfs4_put_open_state(p
->state
);
853 nfs4_put_state_owner(p
->owner
);
860 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
863 kref_put(&p
->kref
, nfs4_opendata_free
);
866 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
870 ret
= rpc_wait_for_completion_task(task
);
874 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
878 if (open_mode
& O_EXCL
)
880 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
882 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
883 && state
->n_rdonly
!= 0;
886 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
887 && state
->n_wronly
!= 0;
889 case FMODE_READ
|FMODE_WRITE
:
890 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
891 && state
->n_rdwr
!= 0;
897 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
899 if (delegation
== NULL
)
901 if ((delegation
->type
& fmode
) != fmode
)
903 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
905 nfs_mark_delegation_referenced(delegation
);
909 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
918 case FMODE_READ
|FMODE_WRITE
:
921 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
924 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
926 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
927 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
928 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
931 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
934 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
936 case FMODE_READ
|FMODE_WRITE
:
937 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
941 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
943 write_seqlock(&state
->seqlock
);
944 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
945 write_sequnlock(&state
->seqlock
);
948 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
951 * Protect the call to nfs4_state_set_mode_locked and
952 * serialise the stateid update
954 write_seqlock(&state
->seqlock
);
955 if (deleg_stateid
!= NULL
) {
956 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
957 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
959 if (open_stateid
!= NULL
)
960 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
961 write_sequnlock(&state
->seqlock
);
962 spin_lock(&state
->owner
->so_lock
);
963 update_open_stateflags(state
, fmode
);
964 spin_unlock(&state
->owner
->so_lock
);
967 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
969 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
970 struct nfs_delegation
*deleg_cur
;
973 fmode
&= (FMODE_READ
|FMODE_WRITE
);
976 deleg_cur
= rcu_dereference(nfsi
->delegation
);
977 if (deleg_cur
== NULL
)
980 spin_lock(&deleg_cur
->lock
);
981 if (nfsi
->delegation
!= deleg_cur
||
982 (deleg_cur
->type
& fmode
) != fmode
)
983 goto no_delegation_unlock
;
985 if (delegation
== NULL
)
986 delegation
= &deleg_cur
->stateid
;
987 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
988 goto no_delegation_unlock
;
990 nfs_mark_delegation_referenced(deleg_cur
);
991 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
993 no_delegation_unlock
:
994 spin_unlock(&deleg_cur
->lock
);
998 if (!ret
&& open_stateid
!= NULL
) {
999 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1007 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1009 struct nfs_delegation
*delegation
;
1012 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1013 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1018 nfs_inode_return_delegation(inode
);
1021 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1023 struct nfs4_state
*state
= opendata
->state
;
1024 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1025 struct nfs_delegation
*delegation
;
1026 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
1027 fmode_t fmode
= opendata
->o_arg
.fmode
;
1028 nfs4_stateid stateid
;
1032 if (can_open_cached(state
, fmode
, open_mode
)) {
1033 spin_lock(&state
->owner
->so_lock
);
1034 if (can_open_cached(state
, fmode
, open_mode
)) {
1035 update_open_stateflags(state
, fmode
);
1036 spin_unlock(&state
->owner
->so_lock
);
1037 goto out_return_state
;
1039 spin_unlock(&state
->owner
->so_lock
);
1042 delegation
= rcu_dereference(nfsi
->delegation
);
1043 if (!can_open_delegated(delegation
, fmode
)) {
1047 /* Save the delegation */
1048 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
1050 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1055 /* Try to update the stateid using the delegation */
1056 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1057 goto out_return_state
;
1060 return ERR_PTR(ret
);
1062 atomic_inc(&state
->count
);
1066 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1068 struct inode
*inode
;
1069 struct nfs4_state
*state
= NULL
;
1070 struct nfs_delegation
*delegation
;
1073 if (!data
->rpc_done
) {
1074 state
= nfs4_try_open_cached(data
);
1079 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1081 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1082 ret
= PTR_ERR(inode
);
1086 state
= nfs4_get_open_state(inode
, data
->owner
);
1089 if (data
->o_res
.delegation_type
!= 0) {
1090 int delegation_flags
= 0;
1093 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1095 delegation_flags
= delegation
->flags
;
1097 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1098 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1099 "returning a delegation for "
1100 "OPEN(CLAIM_DELEGATE_CUR)\n",
1101 NFS_CLIENT(inode
)->cl_server
);
1102 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1103 nfs_inode_set_delegation(state
->inode
,
1104 data
->owner
->so_cred
,
1107 nfs_inode_reclaim_delegation(state
->inode
,
1108 data
->owner
->so_cred
,
1112 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1120 return ERR_PTR(ret
);
1123 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1125 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1126 struct nfs_open_context
*ctx
;
1128 spin_lock(&state
->inode
->i_lock
);
1129 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1130 if (ctx
->state
!= state
)
1132 get_nfs_open_context(ctx
);
1133 spin_unlock(&state
->inode
->i_lock
);
1136 spin_unlock(&state
->inode
->i_lock
);
1137 return ERR_PTR(-ENOENT
);
1140 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1142 struct nfs4_opendata
*opendata
;
1144 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1145 if (opendata
== NULL
)
1146 return ERR_PTR(-ENOMEM
);
1147 opendata
->state
= state
;
1148 atomic_inc(&state
->count
);
1152 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1154 struct nfs4_state
*newstate
;
1157 opendata
->o_arg
.open_flags
= 0;
1158 opendata
->o_arg
.fmode
= fmode
;
1159 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1160 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1161 nfs4_init_opendata_res(opendata
);
1162 ret
= _nfs4_recover_proc_open(opendata
);
1165 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1166 if (IS_ERR(newstate
))
1167 return PTR_ERR(newstate
);
1168 nfs4_close_state(newstate
, fmode
);
1173 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1175 struct nfs4_state
*newstate
;
1178 /* memory barrier prior to reading state->n_* */
1179 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1181 if (state
->n_rdwr
!= 0) {
1182 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1183 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1186 if (newstate
!= state
)
1189 if (state
->n_wronly
!= 0) {
1190 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1191 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1194 if (newstate
!= state
)
1197 if (state
->n_rdonly
!= 0) {
1198 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1199 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1202 if (newstate
!= state
)
1206 * We may have performed cached opens for all three recoveries.
1207 * Check if we need to update the current stateid.
1209 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1210 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1211 write_seqlock(&state
->seqlock
);
1212 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1213 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1214 write_sequnlock(&state
->seqlock
);
1221 * reclaim state on the server after a reboot.
1223 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1225 struct nfs_delegation
*delegation
;
1226 struct nfs4_opendata
*opendata
;
1227 fmode_t delegation_type
= 0;
1230 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1231 if (IS_ERR(opendata
))
1232 return PTR_ERR(opendata
);
1233 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1234 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1236 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1237 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1238 delegation_type
= delegation
->type
;
1240 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1241 status
= nfs4_open_recover(opendata
, state
);
1242 nfs4_opendata_put(opendata
);
1246 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1248 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1249 struct nfs4_exception exception
= { };
1252 err
= _nfs4_do_open_reclaim(ctx
, state
);
1253 if (err
!= -NFS4ERR_DELAY
)
1255 nfs4_handle_exception(server
, err
, &exception
);
1256 } while (exception
.retry
);
1260 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1262 struct nfs_open_context
*ctx
;
1265 ctx
= nfs4_state_find_open_context(state
);
1267 return PTR_ERR(ctx
);
1268 ret
= nfs4_do_open_reclaim(ctx
, state
);
1269 put_nfs_open_context(ctx
);
1273 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1275 struct nfs4_opendata
*opendata
;
1278 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1279 if (IS_ERR(opendata
))
1280 return PTR_ERR(opendata
);
1281 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1282 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1283 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1284 ret
= nfs4_open_recover(opendata
, state
);
1285 nfs4_opendata_put(opendata
);
1289 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1291 struct nfs4_exception exception
= { };
1292 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1295 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1301 case -NFS4ERR_BADSESSION
:
1302 case -NFS4ERR_BADSLOT
:
1303 case -NFS4ERR_BAD_HIGH_SLOT
:
1304 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1305 case -NFS4ERR_DEADSESSION
:
1306 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
1308 case -NFS4ERR_STALE_CLIENTID
:
1309 case -NFS4ERR_STALE_STATEID
:
1310 case -NFS4ERR_EXPIRED
:
1311 /* Don't recall a delegation if it was lost */
1312 nfs4_schedule_lease_recovery(server
->nfs_client
);
1316 * The show must go on: exit, but mark the
1317 * stateid as needing recovery.
1319 case -NFS4ERR_ADMIN_REVOKED
:
1320 case -NFS4ERR_BAD_STATEID
:
1321 nfs4_schedule_stateid_recovery(server
, state
);
1324 * User RPCSEC_GSS context has expired.
1325 * We cannot recover this stateid now, so
1326 * skip it and allow recovery thread to
1333 err
= nfs4_handle_exception(server
, err
, &exception
);
1334 } while (exception
.retry
);
1339 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1341 struct nfs4_opendata
*data
= calldata
;
1343 data
->rpc_status
= task
->tk_status
;
1344 if (data
->rpc_status
== 0) {
1345 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1346 sizeof(data
->o_res
.stateid
.data
));
1347 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1348 renew_lease(data
->o_res
.server
, data
->timestamp
);
1353 static void nfs4_open_confirm_release(void *calldata
)
1355 struct nfs4_opendata
*data
= calldata
;
1356 struct nfs4_state
*state
= NULL
;
1358 /* If this request hasn't been cancelled, do nothing */
1359 if (data
->cancelled
== 0)
1361 /* In case of error, no cleanup! */
1362 if (!data
->rpc_done
)
1364 state
= nfs4_opendata_to_nfs4_state(data
);
1366 nfs4_close_state(state
, data
->o_arg
.fmode
);
1368 nfs4_opendata_put(data
);
1371 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1372 .rpc_call_done
= nfs4_open_confirm_done
,
1373 .rpc_release
= nfs4_open_confirm_release
,
1377 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1379 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1381 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1382 struct rpc_task
*task
;
1383 struct rpc_message msg
= {
1384 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1385 .rpc_argp
= &data
->c_arg
,
1386 .rpc_resp
= &data
->c_res
,
1387 .rpc_cred
= data
->owner
->so_cred
,
1389 struct rpc_task_setup task_setup_data
= {
1390 .rpc_client
= server
->client
,
1391 .rpc_message
= &msg
,
1392 .callback_ops
= &nfs4_open_confirm_ops
,
1393 .callback_data
= data
,
1394 .workqueue
= nfsiod_workqueue
,
1395 .flags
= RPC_TASK_ASYNC
,
1399 kref_get(&data
->kref
);
1401 data
->rpc_status
= 0;
1402 data
->timestamp
= jiffies
;
1403 task
= rpc_run_task(&task_setup_data
);
1405 return PTR_ERR(task
);
1406 status
= nfs4_wait_for_completion_rpc_task(task
);
1408 data
->cancelled
= 1;
1411 status
= data
->rpc_status
;
1416 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1418 struct nfs4_opendata
*data
= calldata
;
1419 struct nfs4_state_owner
*sp
= data
->owner
;
1421 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1424 * Check if we still need to send an OPEN call, or if we can use
1425 * a delegation instead.
1427 if (data
->state
!= NULL
) {
1428 struct nfs_delegation
*delegation
;
1430 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1433 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1434 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1435 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1436 goto unlock_no_action
;
1439 /* Update sequence id. */
1440 data
->o_arg
.id
= sp
->so_owner_id
.id
;
1441 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1442 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1443 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1444 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1446 data
->timestamp
= jiffies
;
1447 if (nfs4_setup_sequence(data
->o_arg
.server
,
1448 &data
->o_arg
.seq_args
,
1449 &data
->o_res
.seq_res
, 1, task
))
1451 rpc_call_start(task
);
1456 task
->tk_action
= NULL
;
1460 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1462 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1463 nfs4_open_prepare(task
, calldata
);
1466 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1468 struct nfs4_opendata
*data
= calldata
;
1470 data
->rpc_status
= task
->tk_status
;
1472 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1475 if (task
->tk_status
== 0) {
1476 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1480 data
->rpc_status
= -ELOOP
;
1483 data
->rpc_status
= -EISDIR
;
1486 data
->rpc_status
= -ENOTDIR
;
1488 renew_lease(data
->o_res
.server
, data
->timestamp
);
1489 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1490 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1495 static void nfs4_open_release(void *calldata
)
1497 struct nfs4_opendata
*data
= calldata
;
1498 struct nfs4_state
*state
= NULL
;
1500 /* If this request hasn't been cancelled, do nothing */
1501 if (data
->cancelled
== 0)
1503 /* In case of error, no cleanup! */
1504 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1506 /* In case we need an open_confirm, no cleanup! */
1507 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1509 state
= nfs4_opendata_to_nfs4_state(data
);
1511 nfs4_close_state(state
, data
->o_arg
.fmode
);
1513 nfs4_opendata_put(data
);
1516 static const struct rpc_call_ops nfs4_open_ops
= {
1517 .rpc_call_prepare
= nfs4_open_prepare
,
1518 .rpc_call_done
= nfs4_open_done
,
1519 .rpc_release
= nfs4_open_release
,
1522 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1523 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1524 .rpc_call_done
= nfs4_open_done
,
1525 .rpc_release
= nfs4_open_release
,
1528 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1530 struct inode
*dir
= data
->dir
->d_inode
;
1531 struct nfs_server
*server
= NFS_SERVER(dir
);
1532 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1533 struct nfs_openres
*o_res
= &data
->o_res
;
1534 struct rpc_task
*task
;
1535 struct rpc_message msg
= {
1536 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1539 .rpc_cred
= data
->owner
->so_cred
,
1541 struct rpc_task_setup task_setup_data
= {
1542 .rpc_client
= server
->client
,
1543 .rpc_message
= &msg
,
1544 .callback_ops
= &nfs4_open_ops
,
1545 .callback_data
= data
,
1546 .workqueue
= nfsiod_workqueue
,
1547 .flags
= RPC_TASK_ASYNC
,
1551 kref_get(&data
->kref
);
1553 data
->rpc_status
= 0;
1554 data
->cancelled
= 0;
1556 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1557 task
= rpc_run_task(&task_setup_data
);
1559 return PTR_ERR(task
);
1560 status
= nfs4_wait_for_completion_rpc_task(task
);
1562 data
->cancelled
= 1;
1565 status
= data
->rpc_status
;
1571 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1573 struct inode
*dir
= data
->dir
->d_inode
;
1574 struct nfs_openres
*o_res
= &data
->o_res
;
1577 status
= nfs4_run_open_task(data
, 1);
1578 if (status
!= 0 || !data
->rpc_done
)
1581 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1583 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1584 status
= _nfs4_proc_open_confirm(data
);
1593 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1595 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1597 struct inode
*dir
= data
->dir
->d_inode
;
1598 struct nfs_server
*server
= NFS_SERVER(dir
);
1599 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1600 struct nfs_openres
*o_res
= &data
->o_res
;
1603 status
= nfs4_run_open_task(data
, 0);
1604 if (!data
->rpc_done
)
1607 if (status
== -NFS4ERR_BADNAME
&&
1608 !(o_arg
->open_flags
& O_CREAT
))
1613 if (o_arg
->open_flags
& O_CREAT
) {
1614 update_changeattr(dir
, &o_res
->cinfo
);
1615 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1617 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1618 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1619 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1620 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1621 status
= _nfs4_proc_open_confirm(data
);
1625 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1626 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1630 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1635 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1636 ret
= nfs4_wait_clnt_recover(clp
);
1639 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1640 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1642 nfs4_schedule_state_manager(clp
);
1648 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1650 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1655 * reclaim state on the server after a network partition.
1656 * Assumes caller holds the appropriate lock
1658 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1660 struct nfs4_opendata
*opendata
;
1663 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1664 if (IS_ERR(opendata
))
1665 return PTR_ERR(opendata
);
1666 ret
= nfs4_open_recover(opendata
, state
);
1668 d_drop(ctx
->dentry
);
1669 nfs4_opendata_put(opendata
);
1673 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1675 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1676 struct nfs4_exception exception
= { };
1680 err
= _nfs4_open_expired(ctx
, state
);
1684 case -NFS4ERR_GRACE
:
1685 case -NFS4ERR_DELAY
:
1686 nfs4_handle_exception(server
, err
, &exception
);
1689 } while (exception
.retry
);
1694 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1696 struct nfs_open_context
*ctx
;
1699 ctx
= nfs4_state_find_open_context(state
);
1701 return PTR_ERR(ctx
);
1702 ret
= nfs4_do_open_expired(ctx
, state
);
1703 put_nfs_open_context(ctx
);
1707 #if defined(CONFIG_NFS_V4_1)
1708 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1711 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1713 status
= nfs41_test_stateid(server
, state
);
1714 if (status
== NFS_OK
)
1716 nfs41_free_stateid(server
, state
);
1717 return nfs4_open_expired(sp
, state
);
1722 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1723 * fields corresponding to attributes that were used to store the verifier.
1724 * Make sure we clobber those fields in the later setattr call
1726 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1728 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1729 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1730 sattr
->ia_valid
|= ATTR_ATIME
;
1732 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1733 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1734 sattr
->ia_valid
|= ATTR_MTIME
;
1738 * Returns a referenced nfs4_state
1740 static int _nfs4_do_open(struct inode
*dir
, struct dentry
*dentry
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
1742 struct nfs4_state_owner
*sp
;
1743 struct nfs4_state
*state
= NULL
;
1744 struct nfs_server
*server
= NFS_SERVER(dir
);
1745 struct nfs4_opendata
*opendata
;
1748 /* Protect against reboot recovery conflicts */
1750 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1751 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1754 status
= nfs4_recover_expired_lease(server
);
1756 goto err_put_state_owner
;
1757 if (dentry
->d_inode
!= NULL
)
1758 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1760 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1761 if (opendata
== NULL
)
1762 goto err_put_state_owner
;
1764 if (dentry
->d_inode
!= NULL
)
1765 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1767 status
= _nfs4_proc_open(opendata
);
1769 goto err_opendata_put
;
1771 state
= nfs4_opendata_to_nfs4_state(opendata
);
1772 status
= PTR_ERR(state
);
1774 goto err_opendata_put
;
1775 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1776 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1778 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1779 nfs4_exclusive_attrset(opendata
, sattr
);
1781 nfs_fattr_init(opendata
->o_res
.f_attr
);
1782 status
= nfs4_do_setattr(state
->inode
, cred
,
1783 opendata
->o_res
.f_attr
, sattr
,
1786 nfs_setattr_update_inode(state
->inode
, sattr
);
1787 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1789 nfs4_opendata_put(opendata
);
1790 nfs4_put_state_owner(sp
);
1794 nfs4_opendata_put(opendata
);
1795 err_put_state_owner
:
1796 nfs4_put_state_owner(sp
);
1803 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct dentry
*dentry
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1805 struct nfs4_exception exception
= { };
1806 struct nfs4_state
*res
;
1810 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
, &res
);
1813 /* NOTE: BAD_SEQID means the server and client disagree about the
1814 * book-keeping w.r.t. state-changing operations
1815 * (OPEN/CLOSE/LOCK/LOCKU...)
1816 * It is actually a sign of a bug on the client or on the server.
1818 * If we receive a BAD_SEQID error in the particular case of
1819 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1820 * have unhashed the old state_owner for us, and that we can
1821 * therefore safely retry using a new one. We should still warn
1822 * the user though...
1824 if (status
== -NFS4ERR_BAD_SEQID
) {
1825 printk(KERN_WARNING
"NFS: v4 server %s "
1826 " returned a bad sequence-id error!\n",
1827 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1828 exception
.retry
= 1;
1832 * BAD_STATEID on OPEN means that the server cancelled our
1833 * state before it received the OPEN_CONFIRM.
1834 * Recover by retrying the request as per the discussion
1835 * on Page 181 of RFC3530.
1837 if (status
== -NFS4ERR_BAD_STATEID
) {
1838 exception
.retry
= 1;
1841 if (status
== -EAGAIN
) {
1842 /* We must have found a delegation */
1843 exception
.retry
= 1;
1846 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1847 status
, &exception
));
1848 } while (exception
.retry
);
1852 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1853 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1854 struct nfs4_state
*state
)
1856 struct nfs_server
*server
= NFS_SERVER(inode
);
1857 struct nfs_setattrargs arg
= {
1858 .fh
= NFS_FH(inode
),
1861 .bitmask
= server
->attr_bitmask
,
1863 struct nfs_setattrres res
= {
1867 struct rpc_message msg
= {
1868 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1873 unsigned long timestamp
= jiffies
;
1876 nfs_fattr_init(fattr
);
1878 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1879 /* Use that stateid */
1880 } else if (state
!= NULL
) {
1881 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
, current
->tgid
);
1883 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1885 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
1886 if (status
== 0 && state
!= NULL
)
1887 renew_lease(server
, timestamp
);
1891 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1892 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1893 struct nfs4_state
*state
)
1895 struct nfs_server
*server
= NFS_SERVER(inode
);
1896 struct nfs4_exception exception
= { };
1899 err
= nfs4_handle_exception(server
,
1900 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1902 } while (exception
.retry
);
1906 struct nfs4_closedata
{
1907 struct inode
*inode
;
1908 struct nfs4_state
*state
;
1909 struct nfs_closeargs arg
;
1910 struct nfs_closeres res
;
1911 struct nfs_fattr fattr
;
1912 unsigned long timestamp
;
1917 static void nfs4_free_closedata(void *data
)
1919 struct nfs4_closedata
*calldata
= data
;
1920 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1921 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
1924 pnfs_roc_release(calldata
->state
->inode
);
1925 nfs4_put_open_state(calldata
->state
);
1926 nfs_free_seqid(calldata
->arg
.seqid
);
1927 nfs4_put_state_owner(sp
);
1928 nfs_sb_deactive(sb
);
1932 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
1935 spin_lock(&state
->owner
->so_lock
);
1936 if (!(fmode
& FMODE_READ
))
1937 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1938 if (!(fmode
& FMODE_WRITE
))
1939 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1940 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1941 spin_unlock(&state
->owner
->so_lock
);
1944 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1946 struct nfs4_closedata
*calldata
= data
;
1947 struct nfs4_state
*state
= calldata
->state
;
1948 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1950 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
1952 /* hmm. we are done with the inode, and in the process of freeing
1953 * the state_owner. we keep this around to process errors
1955 switch (task
->tk_status
) {
1958 pnfs_roc_set_barrier(state
->inode
,
1959 calldata
->roc_barrier
);
1960 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1961 renew_lease(server
, calldata
->timestamp
);
1962 nfs4_close_clear_stateid_flags(state
,
1963 calldata
->arg
.fmode
);
1965 case -NFS4ERR_STALE_STATEID
:
1966 case -NFS4ERR_OLD_STATEID
:
1967 case -NFS4ERR_BAD_STATEID
:
1968 case -NFS4ERR_EXPIRED
:
1969 if (calldata
->arg
.fmode
== 0)
1972 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
1973 rpc_restart_call_prepare(task
);
1975 nfs_release_seqid(calldata
->arg
.seqid
);
1976 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1979 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1981 struct nfs4_closedata
*calldata
= data
;
1982 struct nfs4_state
*state
= calldata
->state
;
1985 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1988 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1989 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
1990 spin_lock(&state
->owner
->so_lock
);
1991 /* Calculate the change in open mode */
1992 if (state
->n_rdwr
== 0) {
1993 if (state
->n_rdonly
== 0) {
1994 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1995 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1996 calldata
->arg
.fmode
&= ~FMODE_READ
;
1998 if (state
->n_wronly
== 0) {
1999 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2000 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2001 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2004 spin_unlock(&state
->owner
->so_lock
);
2007 /* Note: exit _without_ calling nfs4_close_done */
2008 task
->tk_action
= NULL
;
2012 if (calldata
->arg
.fmode
== 0) {
2013 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2014 if (calldata
->roc
&&
2015 pnfs_roc_drain(calldata
->inode
, &calldata
->roc_barrier
)) {
2016 rpc_sleep_on(&NFS_SERVER(calldata
->inode
)->roc_rpcwaitq
,
2022 nfs_fattr_init(calldata
->res
.fattr
);
2023 calldata
->timestamp
= jiffies
;
2024 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
2025 &calldata
->arg
.seq_args
, &calldata
->res
.seq_res
,
2028 rpc_call_start(task
);
2031 static const struct rpc_call_ops nfs4_close_ops
= {
2032 .rpc_call_prepare
= nfs4_close_prepare
,
2033 .rpc_call_done
= nfs4_close_done
,
2034 .rpc_release
= nfs4_free_closedata
,
2038 * It is possible for data to be read/written from a mem-mapped file
2039 * after the sys_close call (which hits the vfs layer as a flush).
2040 * This means that we can't safely call nfsv4 close on a file until
2041 * the inode is cleared. This in turn means that we are not good
2042 * NFSv4 citizens - we do not indicate to the server to update the file's
2043 * share state even when we are done with one of the three share
2044 * stateid's in the inode.
2046 * NOTE: Caller must be holding the sp->so_owner semaphore!
2048 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
, bool roc
)
2050 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2051 struct nfs4_closedata
*calldata
;
2052 struct nfs4_state_owner
*sp
= state
->owner
;
2053 struct rpc_task
*task
;
2054 struct rpc_message msg
= {
2055 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2056 .rpc_cred
= state
->owner
->so_cred
,
2058 struct rpc_task_setup task_setup_data
= {
2059 .rpc_client
= server
->client
,
2060 .rpc_message
= &msg
,
2061 .callback_ops
= &nfs4_close_ops
,
2062 .workqueue
= nfsiod_workqueue
,
2063 .flags
= RPC_TASK_ASYNC
,
2065 int status
= -ENOMEM
;
2067 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2068 if (calldata
== NULL
)
2070 calldata
->inode
= state
->inode
;
2071 calldata
->state
= state
;
2072 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2073 calldata
->arg
.stateid
= &state
->open_stateid
;
2074 /* Serialization for the sequence id */
2075 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2076 if (calldata
->arg
.seqid
== NULL
)
2077 goto out_free_calldata
;
2078 calldata
->arg
.fmode
= 0;
2079 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2080 calldata
->res
.fattr
= &calldata
->fattr
;
2081 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2082 calldata
->res
.server
= server
;
2083 calldata
->roc
= roc
;
2084 nfs_sb_active(calldata
->inode
->i_sb
);
2086 msg
.rpc_argp
= &calldata
->arg
;
2087 msg
.rpc_resp
= &calldata
->res
;
2088 task_setup_data
.callback_data
= calldata
;
2089 task
= rpc_run_task(&task_setup_data
);
2091 return PTR_ERR(task
);
2094 status
= rpc_wait_for_completion_task(task
);
2101 pnfs_roc_release(state
->inode
);
2102 nfs4_put_open_state(state
);
2103 nfs4_put_state_owner(sp
);
2107 static struct inode
*
2108 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2110 struct nfs4_state
*state
;
2112 /* Protect against concurrent sillydeletes */
2113 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
, ctx
->cred
);
2115 return ERR_CAST(state
);
2117 return igrab(state
->inode
);
2120 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2122 if (ctx
->state
== NULL
)
2125 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2127 nfs4_close_state(ctx
->state
, ctx
->mode
);
2130 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2132 struct nfs4_server_caps_arg args
= {
2135 struct nfs4_server_caps_res res
= {};
2136 struct rpc_message msg
= {
2137 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2143 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2145 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2146 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2147 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2148 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2149 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2150 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2151 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2152 server
->caps
|= NFS_CAP_ACLS
;
2153 if (res
.has_links
!= 0)
2154 server
->caps
|= NFS_CAP_HARDLINKS
;
2155 if (res
.has_symlinks
!= 0)
2156 server
->caps
|= NFS_CAP_SYMLINKS
;
2157 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2158 server
->caps
|= NFS_CAP_FILEID
;
2159 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2160 server
->caps
|= NFS_CAP_MODE
;
2161 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2162 server
->caps
|= NFS_CAP_NLINK
;
2163 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2164 server
->caps
|= NFS_CAP_OWNER
;
2165 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2166 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2167 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2168 server
->caps
|= NFS_CAP_ATIME
;
2169 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2170 server
->caps
|= NFS_CAP_CTIME
;
2171 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2172 server
->caps
|= NFS_CAP_MTIME
;
2174 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2175 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2176 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2177 server
->acl_bitmask
= res
.acl_bitmask
;
2183 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2185 struct nfs4_exception exception
= { };
2188 err
= nfs4_handle_exception(server
,
2189 _nfs4_server_capabilities(server
, fhandle
),
2191 } while (exception
.retry
);
2195 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2196 struct nfs_fsinfo
*info
)
2198 struct nfs4_lookup_root_arg args
= {
2199 .bitmask
= nfs4_fattr_bitmap
,
2201 struct nfs4_lookup_res res
= {
2203 .fattr
= info
->fattr
,
2206 struct rpc_message msg
= {
2207 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2212 nfs_fattr_init(info
->fattr
);
2213 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2216 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2217 struct nfs_fsinfo
*info
)
2219 struct nfs4_exception exception
= { };
2222 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2225 case -NFS4ERR_WRONGSEC
:
2228 err
= nfs4_handle_exception(server
, err
, &exception
);
2230 } while (exception
.retry
);
2234 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2235 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2237 struct rpc_auth
*auth
;
2240 auth
= rpcauth_create(flavor
, server
->client
);
2245 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2250 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2251 struct nfs_fsinfo
*info
)
2253 int i
, len
, status
= 0;
2254 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2256 len
= gss_mech_list_pseudoflavors(&flav_array
[0]);
2257 flav_array
[len
] = RPC_AUTH_NULL
;
2260 for (i
= 0; i
< len
; i
++) {
2261 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2262 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2267 * -EACCESS could mean that the user doesn't have correct permissions
2268 * to access the mount. It could also mean that we tried to mount
2269 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2270 * existing mount programs don't handle -EACCES very well so it should
2271 * be mapped to -EPERM instead.
2273 if (status
== -EACCES
)
2279 * get the file handle for the "/" directory on the server
2281 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2282 struct nfs_fsinfo
*info
)
2284 int minor_version
= server
->nfs_client
->cl_minorversion
;
2285 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2286 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2288 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2289 * by nfs4_map_errors() as this function exits.
2291 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2293 status
= nfs4_server_capabilities(server
, fhandle
);
2295 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2296 return nfs4_map_errors(status
);
2299 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
2301 * Get locations and (maybe) other attributes of a referral.
2302 * Note that we'll actually follow the referral later when
2303 * we detect fsid mismatch in inode revalidation
2305 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
,
2306 struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2308 int status
= -ENOMEM
;
2309 struct page
*page
= NULL
;
2310 struct nfs4_fs_locations
*locations
= NULL
;
2312 page
= alloc_page(GFP_KERNEL
);
2315 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2316 if (locations
== NULL
)
2319 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2322 /* Make sure server returned a different fsid for the referral */
2323 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2324 dprintk("%s: server did not return a different fsid for"
2325 " a referral at %s\n", __func__
, name
->name
);
2329 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2330 nfs_fixup_referral_attributes(&locations
->fattr
);
2332 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2333 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2334 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2342 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2344 struct nfs4_getattr_arg args
= {
2346 .bitmask
= server
->attr_bitmask
,
2348 struct nfs4_getattr_res res
= {
2352 struct rpc_message msg
= {
2353 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2358 nfs_fattr_init(fattr
);
2359 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2362 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2364 struct nfs4_exception exception
= { };
2367 err
= nfs4_handle_exception(server
,
2368 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2370 } while (exception
.retry
);
2375 * The file is not closed if it is opened due to the a request to change
2376 * the size of the file. The open call will not be needed once the
2377 * VFS layer lookup-intents are implemented.
2379 * Close is called when the inode is destroyed.
2380 * If we haven't opened the file for O_WRONLY, we
2381 * need to in the size_change case to obtain a stateid.
2384 * Because OPEN is always done by name in nfsv4, it is
2385 * possible that we opened a different file by the same
2386 * name. We can recognize this race condition, but we
2387 * can't do anything about it besides returning an error.
2389 * This will be fixed with VFS changes (lookup-intent).
2392 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2393 struct iattr
*sattr
)
2395 struct inode
*inode
= dentry
->d_inode
;
2396 struct rpc_cred
*cred
= NULL
;
2397 struct nfs4_state
*state
= NULL
;
2400 if (pnfs_ld_layoutret_on_setattr(inode
))
2401 pnfs_return_layout(inode
);
2403 nfs_fattr_init(fattr
);
2405 /* Search for an existing open(O_WRITE) file */
2406 if (sattr
->ia_valid
& ATTR_FILE
) {
2407 struct nfs_open_context
*ctx
;
2409 ctx
= nfs_file_open_context(sattr
->ia_file
);
2416 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2418 nfs_setattr_update_inode(inode
, sattr
);
2422 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2423 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2424 struct nfs_fattr
*fattr
)
2426 struct nfs_server
*server
= NFS_SERVER(dir
);
2428 struct nfs4_lookup_arg args
= {
2429 .bitmask
= server
->attr_bitmask
,
2430 .dir_fh
= NFS_FH(dir
),
2433 struct nfs4_lookup_res res
= {
2438 struct rpc_message msg
= {
2439 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2444 nfs_fattr_init(fattr
);
2446 dprintk("NFS call lookup %s\n", name
->name
);
2447 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2448 dprintk("NFS reply lookup: %d\n", status
);
2452 void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
, struct nfs_fh
*fh
)
2454 memset(fh
, 0, sizeof(struct nfs_fh
));
2455 fattr
->fsid
.major
= 1;
2456 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2457 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_FSID
| NFS_ATTR_FATTR_MOUNTPOINT
;
2458 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2462 static int nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
, struct qstr
*name
,
2463 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2465 struct nfs4_exception exception
= { };
2470 status
= _nfs4_proc_lookup(clnt
, dir
, name
, fhandle
, fattr
);
2472 case -NFS4ERR_BADNAME
:
2474 case -NFS4ERR_MOVED
:
2475 return nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2476 case -NFS4ERR_WRONGSEC
:
2477 nfs_fixup_secinfo_attributes(fattr
, fhandle
);
2479 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2480 status
, &exception
);
2481 } while (exception
.retry
);
2485 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2487 struct nfs_server
*server
= NFS_SERVER(inode
);
2488 struct nfs4_accessargs args
= {
2489 .fh
= NFS_FH(inode
),
2490 .bitmask
= server
->attr_bitmask
,
2492 struct nfs4_accessres res
= {
2495 struct rpc_message msg
= {
2496 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2499 .rpc_cred
= entry
->cred
,
2501 int mode
= entry
->mask
;
2505 * Determine which access bits we want to ask for...
2507 if (mode
& MAY_READ
)
2508 args
.access
|= NFS4_ACCESS_READ
;
2509 if (S_ISDIR(inode
->i_mode
)) {
2510 if (mode
& MAY_WRITE
)
2511 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2512 if (mode
& MAY_EXEC
)
2513 args
.access
|= NFS4_ACCESS_LOOKUP
;
2515 if (mode
& MAY_WRITE
)
2516 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2517 if (mode
& MAY_EXEC
)
2518 args
.access
|= NFS4_ACCESS_EXECUTE
;
2521 res
.fattr
= nfs_alloc_fattr();
2522 if (res
.fattr
== NULL
)
2525 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2528 if (res
.access
& NFS4_ACCESS_READ
)
2529 entry
->mask
|= MAY_READ
;
2530 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2531 entry
->mask
|= MAY_WRITE
;
2532 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2533 entry
->mask
|= MAY_EXEC
;
2534 nfs_refresh_inode(inode
, res
.fattr
);
2536 nfs_free_fattr(res
.fattr
);
2540 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2542 struct nfs4_exception exception
= { };
2545 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2546 _nfs4_proc_access(inode
, entry
),
2548 } while (exception
.retry
);
2553 * TODO: For the time being, we don't try to get any attributes
2554 * along with any of the zero-copy operations READ, READDIR,
2557 * In the case of the first three, we want to put the GETATTR
2558 * after the read-type operation -- this is because it is hard
2559 * to predict the length of a GETATTR response in v4, and thus
2560 * align the READ data correctly. This means that the GETATTR
2561 * may end up partially falling into the page cache, and we should
2562 * shift it into the 'tail' of the xdr_buf before processing.
2563 * To do this efficiently, we need to know the total length
2564 * of data received, which doesn't seem to be available outside
2567 * In the case of WRITE, we also want to put the GETATTR after
2568 * the operation -- in this case because we want to make sure
2569 * we get the post-operation mtime and size. This means that
2570 * we can't use xdr_encode_pages() as written: we need a variant
2571 * of it which would leave room in the 'tail' iovec.
2573 * Both of these changes to the XDR layer would in fact be quite
2574 * minor, but I decided to leave them for a subsequent patch.
2576 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2577 unsigned int pgbase
, unsigned int pglen
)
2579 struct nfs4_readlink args
= {
2580 .fh
= NFS_FH(inode
),
2585 struct nfs4_readlink_res res
;
2586 struct rpc_message msg
= {
2587 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2592 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2595 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2596 unsigned int pgbase
, unsigned int pglen
)
2598 struct nfs4_exception exception
= { };
2601 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2602 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2604 } while (exception
.retry
);
2610 * We will need to arrange for the VFS layer to provide an atomic open.
2611 * Until then, this create/open method is prone to inefficiency and race
2612 * conditions due to the lookup, create, and open VFS calls from sys_open()
2613 * placed on the wire.
2615 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2616 * The file will be opened again in the subsequent VFS open call
2617 * (nfs4_proc_file_open).
2619 * The open for read will just hang around to be used by any process that
2620 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2624 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2625 int flags
, struct nfs_open_context
*ctx
)
2627 struct dentry
*de
= dentry
;
2628 struct nfs4_state
*state
;
2629 struct rpc_cred
*cred
= NULL
;
2638 sattr
->ia_mode
&= ~current_umask();
2639 state
= nfs4_do_open(dir
, de
, fmode
, flags
, sattr
, cred
);
2641 if (IS_ERR(state
)) {
2642 status
= PTR_ERR(state
);
2645 d_add(dentry
, igrab(state
->inode
));
2646 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2650 nfs4_close_sync(state
, fmode
);
2655 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2657 struct nfs_server
*server
= NFS_SERVER(dir
);
2658 struct nfs_removeargs args
= {
2660 .name
.len
= name
->len
,
2661 .name
.name
= name
->name
,
2662 .bitmask
= server
->attr_bitmask
,
2664 struct nfs_removeres res
= {
2667 struct rpc_message msg
= {
2668 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2672 int status
= -ENOMEM
;
2674 res
.dir_attr
= nfs_alloc_fattr();
2675 if (res
.dir_attr
== NULL
)
2678 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2680 update_changeattr(dir
, &res
.cinfo
);
2681 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2683 nfs_free_fattr(res
.dir_attr
);
2688 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2690 struct nfs4_exception exception
= { };
2693 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2694 _nfs4_proc_remove(dir
, name
),
2696 } while (exception
.retry
);
2700 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2702 struct nfs_server
*server
= NFS_SERVER(dir
);
2703 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2704 struct nfs_removeres
*res
= msg
->rpc_resp
;
2706 args
->bitmask
= server
->cache_consistency_bitmask
;
2707 res
->server
= server
;
2708 res
->seq_res
.sr_slot
= NULL
;
2709 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2712 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2714 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2716 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2718 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2720 update_changeattr(dir
, &res
->cinfo
);
2721 nfs_post_op_update_inode(dir
, res
->dir_attr
);
2725 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2727 struct nfs_server
*server
= NFS_SERVER(dir
);
2728 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2729 struct nfs_renameres
*res
= msg
->rpc_resp
;
2731 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2732 arg
->bitmask
= server
->attr_bitmask
;
2733 res
->server
= server
;
2736 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2737 struct inode
*new_dir
)
2739 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2741 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2743 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2746 update_changeattr(old_dir
, &res
->old_cinfo
);
2747 nfs_post_op_update_inode(old_dir
, res
->old_fattr
);
2748 update_changeattr(new_dir
, &res
->new_cinfo
);
2749 nfs_post_op_update_inode(new_dir
, res
->new_fattr
);
2753 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2754 struct inode
*new_dir
, struct qstr
*new_name
)
2756 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2757 struct nfs_renameargs arg
= {
2758 .old_dir
= NFS_FH(old_dir
),
2759 .new_dir
= NFS_FH(new_dir
),
2760 .old_name
= old_name
,
2761 .new_name
= new_name
,
2762 .bitmask
= server
->attr_bitmask
,
2764 struct nfs_renameres res
= {
2767 struct rpc_message msg
= {
2768 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2772 int status
= -ENOMEM
;
2774 res
.old_fattr
= nfs_alloc_fattr();
2775 res
.new_fattr
= nfs_alloc_fattr();
2776 if (res
.old_fattr
== NULL
|| res
.new_fattr
== NULL
)
2779 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2781 update_changeattr(old_dir
, &res
.old_cinfo
);
2782 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2783 update_changeattr(new_dir
, &res
.new_cinfo
);
2784 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2787 nfs_free_fattr(res
.new_fattr
);
2788 nfs_free_fattr(res
.old_fattr
);
2792 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2793 struct inode
*new_dir
, struct qstr
*new_name
)
2795 struct nfs4_exception exception
= { };
2798 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2799 _nfs4_proc_rename(old_dir
, old_name
,
2802 } while (exception
.retry
);
2806 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2808 struct nfs_server
*server
= NFS_SERVER(inode
);
2809 struct nfs4_link_arg arg
= {
2810 .fh
= NFS_FH(inode
),
2811 .dir_fh
= NFS_FH(dir
),
2813 .bitmask
= server
->attr_bitmask
,
2815 struct nfs4_link_res res
= {
2818 struct rpc_message msg
= {
2819 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2823 int status
= -ENOMEM
;
2825 res
.fattr
= nfs_alloc_fattr();
2826 res
.dir_attr
= nfs_alloc_fattr();
2827 if (res
.fattr
== NULL
|| res
.dir_attr
== NULL
)
2830 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2832 update_changeattr(dir
, &res
.cinfo
);
2833 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2834 nfs_post_op_update_inode(inode
, res
.fattr
);
2837 nfs_free_fattr(res
.dir_attr
);
2838 nfs_free_fattr(res
.fattr
);
2842 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2844 struct nfs4_exception exception
= { };
2847 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2848 _nfs4_proc_link(inode
, dir
, name
),
2850 } while (exception
.retry
);
2854 struct nfs4_createdata
{
2855 struct rpc_message msg
;
2856 struct nfs4_create_arg arg
;
2857 struct nfs4_create_res res
;
2859 struct nfs_fattr fattr
;
2860 struct nfs_fattr dir_fattr
;
2863 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2864 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2866 struct nfs4_createdata
*data
;
2868 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2870 struct nfs_server
*server
= NFS_SERVER(dir
);
2872 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2873 data
->msg
.rpc_argp
= &data
->arg
;
2874 data
->msg
.rpc_resp
= &data
->res
;
2875 data
->arg
.dir_fh
= NFS_FH(dir
);
2876 data
->arg
.server
= server
;
2877 data
->arg
.name
= name
;
2878 data
->arg
.attrs
= sattr
;
2879 data
->arg
.ftype
= ftype
;
2880 data
->arg
.bitmask
= server
->attr_bitmask
;
2881 data
->res
.server
= server
;
2882 data
->res
.fh
= &data
->fh
;
2883 data
->res
.fattr
= &data
->fattr
;
2884 data
->res
.dir_fattr
= &data
->dir_fattr
;
2885 nfs_fattr_init(data
->res
.fattr
);
2886 nfs_fattr_init(data
->res
.dir_fattr
);
2891 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2893 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
2894 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
2896 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2897 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2898 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2903 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2908 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2909 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2911 struct nfs4_createdata
*data
;
2912 int status
= -ENAMETOOLONG
;
2914 if (len
> NFS4_MAXPATHLEN
)
2918 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2922 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2923 data
->arg
.u
.symlink
.pages
= &page
;
2924 data
->arg
.u
.symlink
.len
= len
;
2926 status
= nfs4_do_create(dir
, dentry
, data
);
2928 nfs4_free_createdata(data
);
2933 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2934 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2936 struct nfs4_exception exception
= { };
2939 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2940 _nfs4_proc_symlink(dir
, dentry
, page
,
2943 } while (exception
.retry
);
2947 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2948 struct iattr
*sattr
)
2950 struct nfs4_createdata
*data
;
2951 int status
= -ENOMEM
;
2953 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2957 status
= nfs4_do_create(dir
, dentry
, data
);
2959 nfs4_free_createdata(data
);
2964 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2965 struct iattr
*sattr
)
2967 struct nfs4_exception exception
= { };
2970 sattr
->ia_mode
&= ~current_umask();
2972 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2973 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2975 } while (exception
.retry
);
2979 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2980 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
2982 struct inode
*dir
= dentry
->d_inode
;
2983 struct nfs4_readdir_arg args
= {
2988 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2991 struct nfs4_readdir_res res
;
2992 struct rpc_message msg
= {
2993 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3000 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3001 dentry
->d_parent
->d_name
.name
,
3002 dentry
->d_name
.name
,
3003 (unsigned long long)cookie
);
3004 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
3005 res
.pgbase
= args
.pgbase
;
3006 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3008 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3009 status
+= args
.pgbase
;
3012 nfs_invalidate_atime(dir
);
3014 dprintk("%s: returns %d\n", __func__
, status
);
3018 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3019 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3021 struct nfs4_exception exception
= { };
3024 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3025 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3026 pages
, count
, plus
),
3028 } while (exception
.retry
);
3032 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3033 struct iattr
*sattr
, dev_t rdev
)
3035 struct nfs4_createdata
*data
;
3036 int mode
= sattr
->ia_mode
;
3037 int status
= -ENOMEM
;
3039 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
3040 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
3042 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3047 data
->arg
.ftype
= NF4FIFO
;
3048 else if (S_ISBLK(mode
)) {
3049 data
->arg
.ftype
= NF4BLK
;
3050 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3051 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3053 else if (S_ISCHR(mode
)) {
3054 data
->arg
.ftype
= NF4CHR
;
3055 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3056 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3059 status
= nfs4_do_create(dir
, dentry
, data
);
3061 nfs4_free_createdata(data
);
3066 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3067 struct iattr
*sattr
, dev_t rdev
)
3069 struct nfs4_exception exception
= { };
3072 sattr
->ia_mode
&= ~current_umask();
3074 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3075 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3077 } while (exception
.retry
);
3081 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3082 struct nfs_fsstat
*fsstat
)
3084 struct nfs4_statfs_arg args
= {
3086 .bitmask
= server
->attr_bitmask
,
3088 struct nfs4_statfs_res res
= {
3091 struct rpc_message msg
= {
3092 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3097 nfs_fattr_init(fsstat
->fattr
);
3098 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3101 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3103 struct nfs4_exception exception
= { };
3106 err
= nfs4_handle_exception(server
,
3107 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3109 } while (exception
.retry
);
3113 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3114 struct nfs_fsinfo
*fsinfo
)
3116 struct nfs4_fsinfo_arg args
= {
3118 .bitmask
= server
->attr_bitmask
,
3120 struct nfs4_fsinfo_res res
= {
3123 struct rpc_message msg
= {
3124 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3129 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3132 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3134 struct nfs4_exception exception
= { };
3138 err
= nfs4_handle_exception(server
,
3139 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3141 } while (exception
.retry
);
3145 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3147 nfs_fattr_init(fsinfo
->fattr
);
3148 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3151 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3152 struct nfs_pathconf
*pathconf
)
3154 struct nfs4_pathconf_arg args
= {
3156 .bitmask
= server
->attr_bitmask
,
3158 struct nfs4_pathconf_res res
= {
3159 .pathconf
= pathconf
,
3161 struct rpc_message msg
= {
3162 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3167 /* None of the pathconf attributes are mandatory to implement */
3168 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3169 memset(pathconf
, 0, sizeof(*pathconf
));
3173 nfs_fattr_init(pathconf
->fattr
);
3174 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3177 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3178 struct nfs_pathconf
*pathconf
)
3180 struct nfs4_exception exception
= { };
3184 err
= nfs4_handle_exception(server
,
3185 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3187 } while (exception
.retry
);
3191 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3193 nfs_invalidate_atime(data
->inode
);
3196 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3198 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3200 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3201 rpc_restart_call_prepare(task
);
3205 __nfs4_read_done_cb(data
);
3206 if (task
->tk_status
> 0)
3207 renew_lease(server
, data
->timestamp
);
3211 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3214 dprintk("--> %s\n", __func__
);
3216 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3219 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3220 nfs4_read_done_cb(task
, data
);
3223 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3225 data
->timestamp
= jiffies
;
3226 data
->read_done_cb
= nfs4_read_done_cb
;
3227 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3230 /* Reset the the nfs_read_data to send the read to the MDS. */
3231 void nfs4_reset_read(struct rpc_task
*task
, struct nfs_read_data
*data
)
3233 dprintk("%s Reset task for i/o through\n", __func__
);
3234 put_lseg(data
->lseg
);
3236 /* offsets will differ in the dense stripe case */
3237 data
->args
.offset
= data
->mds_offset
;
3238 data
->ds_clp
= NULL
;
3239 data
->args
.fh
= NFS_FH(data
->inode
);
3240 data
->read_done_cb
= nfs4_read_done_cb
;
3241 task
->tk_ops
= data
->mds_ops
;
3242 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3244 EXPORT_SYMBOL_GPL(nfs4_reset_read
);
3246 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3248 struct inode
*inode
= data
->inode
;
3250 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3251 rpc_restart_call_prepare(task
);
3254 if (task
->tk_status
>= 0) {
3255 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3256 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3261 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3263 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3265 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3266 nfs4_write_done_cb(task
, data
);
3269 /* Reset the the nfs_write_data to send the write to the MDS. */
3270 void nfs4_reset_write(struct rpc_task
*task
, struct nfs_write_data
*data
)
3272 dprintk("%s Reset task for i/o through\n", __func__
);
3273 put_lseg(data
->lseg
);
3275 data
->ds_clp
= NULL
;
3276 data
->write_done_cb
= nfs4_write_done_cb
;
3277 data
->args
.fh
= NFS_FH(data
->inode
);
3278 data
->args
.bitmask
= data
->res
.server
->cache_consistency_bitmask
;
3279 data
->args
.offset
= data
->mds_offset
;
3280 data
->res
.fattr
= &data
->fattr
;
3281 task
->tk_ops
= data
->mds_ops
;
3282 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3284 EXPORT_SYMBOL_GPL(nfs4_reset_write
);
3286 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3288 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3291 data
->args
.bitmask
= NULL
;
3292 data
->res
.fattr
= NULL
;
3294 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3295 if (!data
->write_done_cb
)
3296 data
->write_done_cb
= nfs4_write_done_cb
;
3297 data
->res
.server
= server
;
3298 data
->timestamp
= jiffies
;
3300 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3303 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3305 struct inode
*inode
= data
->inode
;
3307 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3308 rpc_restart_call_prepare(task
);
3311 nfs_refresh_inode(inode
, data
->res
.fattr
);
3315 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3317 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3319 return data
->write_done_cb(task
, data
);
3322 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3324 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3327 data
->args
.bitmask
= NULL
;
3328 data
->res
.fattr
= NULL
;
3330 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3331 if (!data
->write_done_cb
)
3332 data
->write_done_cb
= nfs4_commit_done_cb
;
3333 data
->res
.server
= server
;
3334 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3337 struct nfs4_renewdata
{
3338 struct nfs_client
*client
;
3339 unsigned long timestamp
;
3343 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3344 * standalone procedure for queueing an asynchronous RENEW.
3346 static void nfs4_renew_release(void *calldata
)
3348 struct nfs4_renewdata
*data
= calldata
;
3349 struct nfs_client
*clp
= data
->client
;
3351 if (atomic_read(&clp
->cl_count
) > 1)
3352 nfs4_schedule_state_renewal(clp
);
3353 nfs_put_client(clp
);
3357 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3359 struct nfs4_renewdata
*data
= calldata
;
3360 struct nfs_client
*clp
= data
->client
;
3361 unsigned long timestamp
= data
->timestamp
;
3363 if (task
->tk_status
< 0) {
3364 /* Unless we're shutting down, schedule state recovery! */
3365 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3367 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3368 nfs4_schedule_lease_recovery(clp
);
3371 nfs4_schedule_path_down_recovery(clp
);
3373 do_renew_lease(clp
, timestamp
);
3376 static const struct rpc_call_ops nfs4_renew_ops
= {
3377 .rpc_call_done
= nfs4_renew_done
,
3378 .rpc_release
= nfs4_renew_release
,
3381 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3383 struct rpc_message msg
= {
3384 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3388 struct nfs4_renewdata
*data
;
3390 if (renew_flags
== 0)
3392 if (!atomic_inc_not_zero(&clp
->cl_count
))
3394 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3398 data
->timestamp
= jiffies
;
3399 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3400 &nfs4_renew_ops
, data
);
3403 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3405 struct rpc_message msg
= {
3406 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3410 unsigned long now
= jiffies
;
3413 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3416 do_renew_lease(clp
, now
);
3420 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3422 return (server
->caps
& NFS_CAP_ACLS
)
3423 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3424 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3427 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3428 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3431 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3433 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3434 struct page
**pages
, unsigned int *pgbase
)
3436 struct page
*newpage
, **spages
;
3442 len
= min_t(size_t, PAGE_CACHE_SIZE
, buflen
);
3443 newpage
= alloc_page(GFP_KERNEL
);
3445 if (newpage
== NULL
)
3447 memcpy(page_address(newpage
), buf
, len
);
3452 } while (buflen
!= 0);
3458 __free_page(spages
[rc
-1]);
3462 struct nfs4_cached_acl
{
3468 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3470 struct nfs_inode
*nfsi
= NFS_I(inode
);
3472 spin_lock(&inode
->i_lock
);
3473 kfree(nfsi
->nfs4_acl
);
3474 nfsi
->nfs4_acl
= acl
;
3475 spin_unlock(&inode
->i_lock
);
3478 static void nfs4_zap_acl_attr(struct inode
*inode
)
3480 nfs4_set_cached_acl(inode
, NULL
);
3483 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3485 struct nfs_inode
*nfsi
= NFS_I(inode
);
3486 struct nfs4_cached_acl
*acl
;
3489 spin_lock(&inode
->i_lock
);
3490 acl
= nfsi
->nfs4_acl
;
3493 if (buf
== NULL
) /* user is just asking for length */
3495 if (acl
->cached
== 0)
3497 ret
= -ERANGE
; /* see getxattr(2) man page */
3498 if (acl
->len
> buflen
)
3500 memcpy(buf
, acl
->data
, acl
->len
);
3504 spin_unlock(&inode
->i_lock
);
3508 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3510 struct nfs4_cached_acl
*acl
;
3512 if (buf
&& acl_len
<= PAGE_SIZE
) {
3513 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3517 memcpy(acl
->data
, buf
, acl_len
);
3519 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3526 nfs4_set_cached_acl(inode
, acl
);
3530 * The getxattr API returns the required buffer length when called with a
3531 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3532 * the required buf. On a NULL buf, we send a page of data to the server
3533 * guessing that the ACL request can be serviced by a page. If so, we cache
3534 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3535 * the cache. If not so, we throw away the page, and cache the required
3536 * length. The next getxattr call will then produce another round trip to
3537 * the server, this time with the input buf of the required size.
3539 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3541 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3542 struct nfs_getaclargs args
= {
3543 .fh
= NFS_FH(inode
),
3547 struct nfs_getaclres res
= {
3551 struct rpc_message msg
= {
3552 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3556 int ret
= -ENOMEM
, npages
, i
, acl_len
= 0;
3558 npages
= (buflen
+ PAGE_SIZE
- 1) >> PAGE_SHIFT
;
3559 /* As long as we're doing a round trip to the server anyway,
3560 * let's be prepared for a page of acl data. */
3564 for (i
= 0; i
< npages
; i
++) {
3565 pages
[i
] = alloc_page(GFP_KERNEL
);
3570 /* for decoding across pages */
3571 args
.acl_scratch
= alloc_page(GFP_KERNEL
);
3572 if (!args
.acl_scratch
)
3575 args
.acl_len
= npages
* PAGE_SIZE
;
3576 args
.acl_pgbase
= 0;
3577 /* Let decode_getfacl know not to fail if the ACL data is larger than
3578 * the page we send as a guess */
3580 res
.acl_flags
|= NFS4_ACL_LEN_REQUEST
;
3581 resp_buf
= page_address(pages
[0]);
3583 dprintk("%s buf %p buflen %ld npages %d args.acl_len %ld\n",
3584 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3585 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3586 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3590 acl_len
= res
.acl_len
- res
.acl_data_offset
;
3591 if (acl_len
> args
.acl_len
)
3592 nfs4_write_cached_acl(inode
, NULL
, acl_len
);
3594 nfs4_write_cached_acl(inode
, resp_buf
+ res
.acl_data_offset
,
3598 if (acl_len
> buflen
)
3600 _copy_from_pages(buf
, pages
, res
.acl_data_offset
,
3605 for (i
= 0; i
< npages
; i
++)
3607 __free_page(pages
[i
]);
3608 if (args
.acl_scratch
)
3609 __free_page(args
.acl_scratch
);
3613 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3615 struct nfs4_exception exception
= { };
3618 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3621 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3622 } while (exception
.retry
);
3626 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3628 struct nfs_server
*server
= NFS_SERVER(inode
);
3631 if (!nfs4_server_supports_acls(server
))
3633 ret
= nfs_revalidate_inode(server
, inode
);
3636 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3637 nfs_zap_acl_cache(inode
);
3638 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3640 /* -ENOENT is returned if there is no ACL or if there is an ACL
3641 * but no cached acl data, just the acl length */
3643 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3646 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3648 struct nfs_server
*server
= NFS_SERVER(inode
);
3649 struct page
*pages
[NFS4ACL_MAXPAGES
];
3650 struct nfs_setaclargs arg
= {
3651 .fh
= NFS_FH(inode
),
3655 struct nfs_setaclres res
;
3656 struct rpc_message msg
= {
3657 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3663 if (!nfs4_server_supports_acls(server
))
3665 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3668 nfs_inode_return_delegation(inode
);
3669 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3672 * Free each page after tx, so the only ref left is
3673 * held by the network stack
3676 put_page(pages
[i
-1]);
3679 * Acl update can result in inode attribute update.
3680 * so mark the attribute cache invalid.
3682 spin_lock(&inode
->i_lock
);
3683 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3684 spin_unlock(&inode
->i_lock
);
3685 nfs_access_zap_cache(inode
);
3686 nfs_zap_acl_cache(inode
);
3690 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3692 struct nfs4_exception exception
= { };
3695 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3696 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3698 } while (exception
.retry
);
3703 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3705 struct nfs_client
*clp
= server
->nfs_client
;
3707 if (task
->tk_status
>= 0)
3709 switch(task
->tk_status
) {
3710 case -NFS4ERR_ADMIN_REVOKED
:
3711 case -NFS4ERR_BAD_STATEID
:
3712 case -NFS4ERR_OPENMODE
:
3715 nfs4_schedule_stateid_recovery(server
, state
);
3716 goto wait_on_recovery
;
3717 case -NFS4ERR_EXPIRED
:
3719 nfs4_schedule_stateid_recovery(server
, state
);
3720 case -NFS4ERR_STALE_STATEID
:
3721 case -NFS4ERR_STALE_CLIENTID
:
3722 nfs4_schedule_lease_recovery(clp
);
3723 goto wait_on_recovery
;
3724 #if defined(CONFIG_NFS_V4_1)
3725 case -NFS4ERR_BADSESSION
:
3726 case -NFS4ERR_BADSLOT
:
3727 case -NFS4ERR_BAD_HIGH_SLOT
:
3728 case -NFS4ERR_DEADSESSION
:
3729 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3730 case -NFS4ERR_SEQ_FALSE_RETRY
:
3731 case -NFS4ERR_SEQ_MISORDERED
:
3732 dprintk("%s ERROR %d, Reset session\n", __func__
,
3734 nfs4_schedule_session_recovery(clp
->cl_session
);
3735 task
->tk_status
= 0;
3737 #endif /* CONFIG_NFS_V4_1 */
3738 case -NFS4ERR_DELAY
:
3739 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3740 case -NFS4ERR_GRACE
:
3742 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3743 task
->tk_status
= 0;
3745 case -NFS4ERR_RETRY_UNCACHED_REP
:
3746 case -NFS4ERR_OLD_STATEID
:
3747 task
->tk_status
= 0;
3750 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3753 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3754 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3755 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3756 task
->tk_status
= 0;
3760 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
3761 unsigned short port
, struct rpc_cred
*cred
,
3762 struct nfs4_setclientid_res
*res
)
3764 nfs4_verifier sc_verifier
;
3765 struct nfs4_setclientid setclientid
= {
3766 .sc_verifier
= &sc_verifier
,
3768 .sc_cb_ident
= clp
->cl_cb_ident
,
3770 struct rpc_message msg
= {
3771 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3772 .rpc_argp
= &setclientid
,
3780 p
= (__be32
*)sc_verifier
.data
;
3781 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3782 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3785 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3786 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3788 rpc_peeraddr2str(clp
->cl_rpcclient
,
3790 rpc_peeraddr2str(clp
->cl_rpcclient
,
3792 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3793 clp
->cl_id_uniquifier
);
3794 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3795 sizeof(setclientid
.sc_netid
),
3796 rpc_peeraddr2str(clp
->cl_rpcclient
,
3797 RPC_DISPLAY_NETID
));
3798 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3799 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3800 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3802 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3803 if (status
!= -NFS4ERR_CLID_INUSE
)
3806 ++clp
->cl_id_uniquifier
;
3810 ssleep(clp
->cl_lease_time
/ HZ
+ 1);
3815 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3816 struct nfs4_setclientid_res
*arg
,
3817 struct rpc_cred
*cred
)
3819 struct nfs_fsinfo fsinfo
;
3820 struct rpc_message msg
= {
3821 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3823 .rpc_resp
= &fsinfo
,
3830 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3832 spin_lock(&clp
->cl_lock
);
3833 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3834 clp
->cl_last_renewal
= now
;
3835 spin_unlock(&clp
->cl_lock
);
3840 struct nfs4_delegreturndata
{
3841 struct nfs4_delegreturnargs args
;
3842 struct nfs4_delegreturnres res
;
3844 nfs4_stateid stateid
;
3845 unsigned long timestamp
;
3846 struct nfs_fattr fattr
;
3850 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3852 struct nfs4_delegreturndata
*data
= calldata
;
3854 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3857 switch (task
->tk_status
) {
3858 case -NFS4ERR_STALE_STATEID
:
3859 case -NFS4ERR_EXPIRED
:
3861 renew_lease(data
->res
.server
, data
->timestamp
);
3864 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
3866 rpc_restart_call_prepare(task
);
3870 data
->rpc_status
= task
->tk_status
;
3873 static void nfs4_delegreturn_release(void *calldata
)
3878 #if defined(CONFIG_NFS_V4_1)
3879 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3881 struct nfs4_delegreturndata
*d_data
;
3883 d_data
= (struct nfs4_delegreturndata
*)data
;
3885 if (nfs4_setup_sequence(d_data
->res
.server
,
3886 &d_data
->args
.seq_args
,
3887 &d_data
->res
.seq_res
, 1, task
))
3889 rpc_call_start(task
);
3891 #endif /* CONFIG_NFS_V4_1 */
3893 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3894 #if defined(CONFIG_NFS_V4_1)
3895 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3896 #endif /* CONFIG_NFS_V4_1 */
3897 .rpc_call_done
= nfs4_delegreturn_done
,
3898 .rpc_release
= nfs4_delegreturn_release
,
3901 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3903 struct nfs4_delegreturndata
*data
;
3904 struct nfs_server
*server
= NFS_SERVER(inode
);
3905 struct rpc_task
*task
;
3906 struct rpc_message msg
= {
3907 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3910 struct rpc_task_setup task_setup_data
= {
3911 .rpc_client
= server
->client
,
3912 .rpc_message
= &msg
,
3913 .callback_ops
= &nfs4_delegreturn_ops
,
3914 .flags
= RPC_TASK_ASYNC
,
3918 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
3921 data
->args
.fhandle
= &data
->fh
;
3922 data
->args
.stateid
= &data
->stateid
;
3923 data
->args
.bitmask
= server
->attr_bitmask
;
3924 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3925 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3926 data
->res
.fattr
= &data
->fattr
;
3927 data
->res
.server
= server
;
3928 nfs_fattr_init(data
->res
.fattr
);
3929 data
->timestamp
= jiffies
;
3930 data
->rpc_status
= 0;
3932 task_setup_data
.callback_data
= data
;
3933 msg
.rpc_argp
= &data
->args
;
3934 msg
.rpc_resp
= &data
->res
;
3935 task
= rpc_run_task(&task_setup_data
);
3937 return PTR_ERR(task
);
3940 status
= nfs4_wait_for_completion_rpc_task(task
);
3943 status
= data
->rpc_status
;
3946 nfs_refresh_inode(inode
, &data
->fattr
);
3952 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3954 struct nfs_server
*server
= NFS_SERVER(inode
);
3955 struct nfs4_exception exception
= { };
3958 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3960 case -NFS4ERR_STALE_STATEID
:
3961 case -NFS4ERR_EXPIRED
:
3965 err
= nfs4_handle_exception(server
, err
, &exception
);
3966 } while (exception
.retry
);
3970 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3971 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3974 * sleep, with exponential backoff, and retry the LOCK operation.
3976 static unsigned long
3977 nfs4_set_lock_task_retry(unsigned long timeout
)
3979 schedule_timeout_killable(timeout
);
3981 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3982 return NFS4_LOCK_MAXTIMEOUT
;
3986 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3988 struct inode
*inode
= state
->inode
;
3989 struct nfs_server
*server
= NFS_SERVER(inode
);
3990 struct nfs_client
*clp
= server
->nfs_client
;
3991 struct nfs_lockt_args arg
= {
3992 .fh
= NFS_FH(inode
),
3995 struct nfs_lockt_res res
= {
3998 struct rpc_message msg
= {
3999 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4002 .rpc_cred
= state
->owner
->so_cred
,
4004 struct nfs4_lock_state
*lsp
;
4007 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4008 status
= nfs4_set_lock_state(state
, request
);
4011 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4012 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
4013 arg
.lock_owner
.s_dev
= server
->s_dev
;
4014 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4017 request
->fl_type
= F_UNLCK
;
4019 case -NFS4ERR_DENIED
:
4022 request
->fl_ops
->fl_release_private(request
);
4027 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4029 struct nfs4_exception exception
= { };
4033 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4034 _nfs4_proc_getlk(state
, cmd
, request
),
4036 } while (exception
.retry
);
4040 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4043 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4045 res
= posix_lock_file_wait(file
, fl
);
4048 res
= flock_lock_file_wait(file
, fl
);
4056 struct nfs4_unlockdata
{
4057 struct nfs_locku_args arg
;
4058 struct nfs_locku_res res
;
4059 struct nfs4_lock_state
*lsp
;
4060 struct nfs_open_context
*ctx
;
4061 struct file_lock fl
;
4062 const struct nfs_server
*server
;
4063 unsigned long timestamp
;
4066 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4067 struct nfs_open_context
*ctx
,
4068 struct nfs4_lock_state
*lsp
,
4069 struct nfs_seqid
*seqid
)
4071 struct nfs4_unlockdata
*p
;
4072 struct inode
*inode
= lsp
->ls_state
->inode
;
4074 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4077 p
->arg
.fh
= NFS_FH(inode
);
4079 p
->arg
.seqid
= seqid
;
4080 p
->res
.seqid
= seqid
;
4081 p
->arg
.stateid
= &lsp
->ls_stateid
;
4083 atomic_inc(&lsp
->ls_count
);
4084 /* Ensure we don't close file until we're done freeing locks! */
4085 p
->ctx
= get_nfs_open_context(ctx
);
4086 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4087 p
->server
= NFS_SERVER(inode
);
4091 static void nfs4_locku_release_calldata(void *data
)
4093 struct nfs4_unlockdata
*calldata
= data
;
4094 nfs_free_seqid(calldata
->arg
.seqid
);
4095 nfs4_put_lock_state(calldata
->lsp
);
4096 put_nfs_open_context(calldata
->ctx
);
4100 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4102 struct nfs4_unlockdata
*calldata
= data
;
4104 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4106 switch (task
->tk_status
) {
4108 memcpy(calldata
->lsp
->ls_stateid
.data
,
4109 calldata
->res
.stateid
.data
,
4110 sizeof(calldata
->lsp
->ls_stateid
.data
));
4111 renew_lease(calldata
->server
, calldata
->timestamp
);
4113 case -NFS4ERR_BAD_STATEID
:
4114 case -NFS4ERR_OLD_STATEID
:
4115 case -NFS4ERR_STALE_STATEID
:
4116 case -NFS4ERR_EXPIRED
:
4119 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4120 rpc_restart_call_prepare(task
);
4124 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4126 struct nfs4_unlockdata
*calldata
= data
;
4128 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4130 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
4131 /* Note: exit _without_ running nfs4_locku_done */
4132 task
->tk_action
= NULL
;
4135 calldata
->timestamp
= jiffies
;
4136 if (nfs4_setup_sequence(calldata
->server
,
4137 &calldata
->arg
.seq_args
,
4138 &calldata
->res
.seq_res
, 1, task
))
4140 rpc_call_start(task
);
4143 static const struct rpc_call_ops nfs4_locku_ops
= {
4144 .rpc_call_prepare
= nfs4_locku_prepare
,
4145 .rpc_call_done
= nfs4_locku_done
,
4146 .rpc_release
= nfs4_locku_release_calldata
,
4149 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4150 struct nfs_open_context
*ctx
,
4151 struct nfs4_lock_state
*lsp
,
4152 struct nfs_seqid
*seqid
)
4154 struct nfs4_unlockdata
*data
;
4155 struct rpc_message msg
= {
4156 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4157 .rpc_cred
= ctx
->cred
,
4159 struct rpc_task_setup task_setup_data
= {
4160 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4161 .rpc_message
= &msg
,
4162 .callback_ops
= &nfs4_locku_ops
,
4163 .workqueue
= nfsiod_workqueue
,
4164 .flags
= RPC_TASK_ASYNC
,
4167 /* Ensure this is an unlock - when canceling a lock, the
4168 * canceled lock is passed in, and it won't be an unlock.
4170 fl
->fl_type
= F_UNLCK
;
4172 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4174 nfs_free_seqid(seqid
);
4175 return ERR_PTR(-ENOMEM
);
4178 msg
.rpc_argp
= &data
->arg
;
4179 msg
.rpc_resp
= &data
->res
;
4180 task_setup_data
.callback_data
= data
;
4181 return rpc_run_task(&task_setup_data
);
4184 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4186 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4187 struct nfs_seqid
*seqid
;
4188 struct nfs4_lock_state
*lsp
;
4189 struct rpc_task
*task
;
4191 unsigned char fl_flags
= request
->fl_flags
;
4193 status
= nfs4_set_lock_state(state
, request
);
4194 /* Unlock _before_ we do the RPC call */
4195 request
->fl_flags
|= FL_EXISTS
;
4196 down_read(&nfsi
->rwsem
);
4197 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4198 up_read(&nfsi
->rwsem
);
4201 up_read(&nfsi
->rwsem
);
4204 /* Is this a delegated lock? */
4205 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4207 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4208 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4212 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4213 status
= PTR_ERR(task
);
4216 status
= nfs4_wait_for_completion_rpc_task(task
);
4219 request
->fl_flags
= fl_flags
;
4223 struct nfs4_lockdata
{
4224 struct nfs_lock_args arg
;
4225 struct nfs_lock_res res
;
4226 struct nfs4_lock_state
*lsp
;
4227 struct nfs_open_context
*ctx
;
4228 struct file_lock fl
;
4229 unsigned long timestamp
;
4232 struct nfs_server
*server
;
4235 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4236 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4239 struct nfs4_lockdata
*p
;
4240 struct inode
*inode
= lsp
->ls_state
->inode
;
4241 struct nfs_server
*server
= NFS_SERVER(inode
);
4243 p
= kzalloc(sizeof(*p
), gfp_mask
);
4247 p
->arg
.fh
= NFS_FH(inode
);
4249 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4250 if (p
->arg
.open_seqid
== NULL
)
4252 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4253 if (p
->arg
.lock_seqid
== NULL
)
4254 goto out_free_seqid
;
4255 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4256 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4257 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
4258 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4259 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4262 atomic_inc(&lsp
->ls_count
);
4263 p
->ctx
= get_nfs_open_context(ctx
);
4264 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4267 nfs_free_seqid(p
->arg
.open_seqid
);
4273 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4275 struct nfs4_lockdata
*data
= calldata
;
4276 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4278 dprintk("%s: begin!\n", __func__
);
4279 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4281 /* Do we need to do an open_to_lock_owner? */
4282 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4283 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4285 data
->arg
.open_stateid
= &state
->stateid
;
4286 data
->arg
.new_lock_owner
= 1;
4287 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4289 data
->arg
.new_lock_owner
= 0;
4290 data
->timestamp
= jiffies
;
4291 if (nfs4_setup_sequence(data
->server
,
4292 &data
->arg
.seq_args
,
4293 &data
->res
.seq_res
, 1, task
))
4295 rpc_call_start(task
);
4296 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4299 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4301 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4302 nfs4_lock_prepare(task
, calldata
);
4305 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4307 struct nfs4_lockdata
*data
= calldata
;
4309 dprintk("%s: begin!\n", __func__
);
4311 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4314 data
->rpc_status
= task
->tk_status
;
4315 if (data
->arg
.new_lock_owner
!= 0) {
4316 if (data
->rpc_status
== 0)
4317 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4321 if (data
->rpc_status
== 0) {
4322 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
4323 sizeof(data
->lsp
->ls_stateid
.data
));
4324 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4325 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4328 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4331 static void nfs4_lock_release(void *calldata
)
4333 struct nfs4_lockdata
*data
= calldata
;
4335 dprintk("%s: begin!\n", __func__
);
4336 nfs_free_seqid(data
->arg
.open_seqid
);
4337 if (data
->cancelled
!= 0) {
4338 struct rpc_task
*task
;
4339 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4340 data
->arg
.lock_seqid
);
4342 rpc_put_task_async(task
);
4343 dprintk("%s: cancelling lock!\n", __func__
);
4345 nfs_free_seqid(data
->arg
.lock_seqid
);
4346 nfs4_put_lock_state(data
->lsp
);
4347 put_nfs_open_context(data
->ctx
);
4349 dprintk("%s: done!\n", __func__
);
4352 static const struct rpc_call_ops nfs4_lock_ops
= {
4353 .rpc_call_prepare
= nfs4_lock_prepare
,
4354 .rpc_call_done
= nfs4_lock_done
,
4355 .rpc_release
= nfs4_lock_release
,
4358 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4359 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4360 .rpc_call_done
= nfs4_lock_done
,
4361 .rpc_release
= nfs4_lock_release
,
4364 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4367 case -NFS4ERR_ADMIN_REVOKED
:
4368 case -NFS4ERR_BAD_STATEID
:
4369 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4370 if (new_lock_owner
!= 0 ||
4371 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4372 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4374 case -NFS4ERR_STALE_STATEID
:
4375 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4376 case -NFS4ERR_EXPIRED
:
4377 nfs4_schedule_lease_recovery(server
->nfs_client
);
4381 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4383 struct nfs4_lockdata
*data
;
4384 struct rpc_task
*task
;
4385 struct rpc_message msg
= {
4386 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4387 .rpc_cred
= state
->owner
->so_cred
,
4389 struct rpc_task_setup task_setup_data
= {
4390 .rpc_client
= NFS_CLIENT(state
->inode
),
4391 .rpc_message
= &msg
,
4392 .callback_ops
= &nfs4_lock_ops
,
4393 .workqueue
= nfsiod_workqueue
,
4394 .flags
= RPC_TASK_ASYNC
,
4398 dprintk("%s: begin!\n", __func__
);
4399 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4400 fl
->fl_u
.nfs4_fl
.owner
,
4401 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4405 data
->arg
.block
= 1;
4406 if (recovery_type
> NFS_LOCK_NEW
) {
4407 if (recovery_type
== NFS_LOCK_RECLAIM
)
4408 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4409 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4411 msg
.rpc_argp
= &data
->arg
;
4412 msg
.rpc_resp
= &data
->res
;
4413 task_setup_data
.callback_data
= data
;
4414 task
= rpc_run_task(&task_setup_data
);
4416 return PTR_ERR(task
);
4417 ret
= nfs4_wait_for_completion_rpc_task(task
);
4419 ret
= data
->rpc_status
;
4421 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4422 data
->arg
.new_lock_owner
, ret
);
4424 data
->cancelled
= 1;
4426 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4430 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4432 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4433 struct nfs4_exception exception
= { };
4437 /* Cache the lock if possible... */
4438 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4440 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4441 if (err
!= -NFS4ERR_DELAY
)
4443 nfs4_handle_exception(server
, err
, &exception
);
4444 } while (exception
.retry
);
4448 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4450 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4451 struct nfs4_exception exception
= { };
4454 err
= nfs4_set_lock_state(state
, request
);
4458 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4460 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4464 case -NFS4ERR_GRACE
:
4465 case -NFS4ERR_DELAY
:
4466 nfs4_handle_exception(server
, err
, &exception
);
4469 } while (exception
.retry
);
4474 #if defined(CONFIG_NFS_V4_1)
4475 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4478 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4480 status
= nfs41_test_stateid(server
, state
);
4481 if (status
== NFS_OK
)
4483 nfs41_free_stateid(server
, state
);
4484 return nfs4_lock_expired(state
, request
);
4488 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4490 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4491 unsigned char fl_flags
= request
->fl_flags
;
4492 int status
= -ENOLCK
;
4494 if ((fl_flags
& FL_POSIX
) &&
4495 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4497 /* Is this a delegated open? */
4498 status
= nfs4_set_lock_state(state
, request
);
4501 request
->fl_flags
|= FL_ACCESS
;
4502 status
= do_vfs_lock(request
->fl_file
, request
);
4505 down_read(&nfsi
->rwsem
);
4506 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4507 /* Yes: cache locks! */
4508 /* ...but avoid races with delegation recall... */
4509 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4510 status
= do_vfs_lock(request
->fl_file
, request
);
4513 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4516 /* Note: we always want to sleep here! */
4517 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4518 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4519 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
4521 up_read(&nfsi
->rwsem
);
4523 request
->fl_flags
= fl_flags
;
4527 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4529 struct nfs4_exception exception
= { };
4533 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4534 if (err
== -NFS4ERR_DENIED
)
4536 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4538 } while (exception
.retry
);
4543 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4545 struct nfs_open_context
*ctx
;
4546 struct nfs4_state
*state
;
4547 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4550 /* verify open state */
4551 ctx
= nfs_file_open_context(filp
);
4554 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4557 if (IS_GETLK(cmd
)) {
4559 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4563 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4566 if (request
->fl_type
== F_UNLCK
) {
4568 return nfs4_proc_unlck(state
, cmd
, request
);
4575 status
= nfs4_proc_setlk(state
, cmd
, request
);
4576 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4578 timeout
= nfs4_set_lock_task_retry(timeout
);
4579 status
= -ERESTARTSYS
;
4582 } while(status
< 0);
4586 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4588 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4589 struct nfs4_exception exception
= { };
4592 err
= nfs4_set_lock_state(state
, fl
);
4596 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4599 printk(KERN_ERR
"%s: unhandled error %d.\n",
4604 case -NFS4ERR_EXPIRED
:
4605 nfs4_schedule_stateid_recovery(server
, state
);
4606 case -NFS4ERR_STALE_CLIENTID
:
4607 case -NFS4ERR_STALE_STATEID
:
4608 nfs4_schedule_lease_recovery(server
->nfs_client
);
4610 case -NFS4ERR_BADSESSION
:
4611 case -NFS4ERR_BADSLOT
:
4612 case -NFS4ERR_BAD_HIGH_SLOT
:
4613 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4614 case -NFS4ERR_DEADSESSION
:
4615 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
4619 * The show must go on: exit, but mark the
4620 * stateid as needing recovery.
4622 case -NFS4ERR_ADMIN_REVOKED
:
4623 case -NFS4ERR_BAD_STATEID
:
4624 case -NFS4ERR_OPENMODE
:
4625 nfs4_schedule_stateid_recovery(server
, state
);
4630 * User RPCSEC_GSS context has expired.
4631 * We cannot recover this stateid now, so
4632 * skip it and allow recovery thread to
4638 case -NFS4ERR_DENIED
:
4639 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4642 case -NFS4ERR_DELAY
:
4645 err
= nfs4_handle_exception(server
, err
, &exception
);
4646 } while (exception
.retry
);
4651 static void nfs4_release_lockowner_release(void *calldata
)
4656 const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4657 .rpc_release
= nfs4_release_lockowner_release
,
4660 void nfs4_release_lockowner(const struct nfs4_lock_state
*lsp
)
4662 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4663 struct nfs_release_lockowner_args
*args
;
4664 struct rpc_message msg
= {
4665 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4668 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
4670 args
= kmalloc(sizeof(*args
), GFP_NOFS
);
4673 args
->lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4674 args
->lock_owner
.id
= lsp
->ls_id
.id
;
4675 args
->lock_owner
.s_dev
= server
->s_dev
;
4676 msg
.rpc_argp
= args
;
4677 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, args
);
4680 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4682 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
4683 const void *buf
, size_t buflen
,
4684 int flags
, int type
)
4686 if (strcmp(key
, "") != 0)
4689 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
4692 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
4693 void *buf
, size_t buflen
, int type
)
4695 if (strcmp(key
, "") != 0)
4698 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
4701 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
4702 size_t list_len
, const char *name
,
4703 size_t name_len
, int type
)
4705 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
4707 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4710 if (list
&& len
<= list_len
)
4711 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
4716 * nfs_fhget will use either the mounted_on_fileid or the fileid
4718 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4720 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
4721 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
4722 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4723 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4726 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4727 NFS_ATTR_FATTR_NLINK
;
4728 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4732 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4733 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4735 struct nfs_server
*server
= NFS_SERVER(dir
);
4737 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4739 struct nfs4_fs_locations_arg args
= {
4740 .dir_fh
= NFS_FH(dir
),
4745 struct nfs4_fs_locations_res res
= {
4746 .fs_locations
= fs_locations
,
4748 struct rpc_message msg
= {
4749 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4755 dprintk("%s: start\n", __func__
);
4757 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
4758 * is not supported */
4759 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
4760 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
4762 bitmask
[0] |= FATTR4_WORD0_FILEID
;
4764 nfs_fattr_init(&fs_locations
->fattr
);
4765 fs_locations
->server
= server
;
4766 fs_locations
->nlocations
= 0;
4767 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4768 dprintk("%s: returned status = %d\n", __func__
, status
);
4772 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4775 struct nfs4_secinfo_arg args
= {
4776 .dir_fh
= NFS_FH(dir
),
4779 struct nfs4_secinfo_res res
= {
4782 struct rpc_message msg
= {
4783 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
4788 dprintk("NFS call secinfo %s\n", name
->name
);
4789 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4790 dprintk("NFS reply secinfo: %d\n", status
);
4794 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4796 struct nfs4_exception exception
= { };
4799 err
= nfs4_handle_exception(NFS_SERVER(dir
),
4800 _nfs4_proc_secinfo(dir
, name
, flavors
),
4802 } while (exception
.retry
);
4806 #ifdef CONFIG_NFS_V4_1
4808 * Check the exchange flags returned by the server for invalid flags, having
4809 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
4812 static int nfs4_check_cl_exchange_flags(u32 flags
)
4814 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
4816 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
4817 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
4819 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
4823 return -NFS4ERR_INVAL
;
4827 nfs41_same_server_scope(struct server_scope
*a
, struct server_scope
*b
)
4829 if (a
->server_scope_sz
== b
->server_scope_sz
&&
4830 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
4837 * nfs4_proc_exchange_id()
4839 * Since the clientid has expired, all compounds using sessions
4840 * associated with the stale clientid will be returning
4841 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4842 * be in some phase of session reset.
4844 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4846 nfs4_verifier verifier
;
4847 struct nfs41_exchange_id_args args
= {
4849 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
4851 struct nfs41_exchange_id_res res
= {
4855 struct rpc_message msg
= {
4856 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4863 dprintk("--> %s\n", __func__
);
4864 BUG_ON(clp
== NULL
);
4866 p
= (u32
*)verifier
.data
;
4867 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4868 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4869 args
.verifier
= &verifier
;
4871 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4874 init_utsname()->nodename
,
4875 init_utsname()->domainname
,
4876 clp
->cl_rpcclient
->cl_auth
->au_flavor
);
4878 res
.server_scope
= kzalloc(sizeof(struct server_scope
), GFP_KERNEL
);
4879 if (unlikely(!res
.server_scope
))
4882 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4884 status
= nfs4_check_cl_exchange_flags(clp
->cl_exchange_flags
);
4887 if (clp
->server_scope
&&
4888 !nfs41_same_server_scope(clp
->server_scope
,
4889 res
.server_scope
)) {
4890 dprintk("%s: server_scope mismatch detected\n",
4892 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
4893 kfree(clp
->server_scope
);
4894 clp
->server_scope
= NULL
;
4897 if (!clp
->server_scope
)
4898 clp
->server_scope
= res
.server_scope
;
4900 kfree(res
.server_scope
);
4903 dprintk("<-- %s status= %d\n", __func__
, status
);
4907 struct nfs4_get_lease_time_data
{
4908 struct nfs4_get_lease_time_args
*args
;
4909 struct nfs4_get_lease_time_res
*res
;
4910 struct nfs_client
*clp
;
4913 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4917 struct nfs4_get_lease_time_data
*data
=
4918 (struct nfs4_get_lease_time_data
*)calldata
;
4920 dprintk("--> %s\n", __func__
);
4921 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4922 /* just setup sequence, do not trigger session recovery
4923 since we're invoked within one */
4924 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4925 &data
->args
->la_seq_args
,
4926 &data
->res
->lr_seq_res
, 0, task
);
4928 BUG_ON(ret
== -EAGAIN
);
4929 rpc_call_start(task
);
4930 dprintk("<-- %s\n", __func__
);
4934 * Called from nfs4_state_manager thread for session setup, so don't recover
4935 * from sequence operation or clientid errors.
4937 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4939 struct nfs4_get_lease_time_data
*data
=
4940 (struct nfs4_get_lease_time_data
*)calldata
;
4942 dprintk("--> %s\n", __func__
);
4943 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
4945 switch (task
->tk_status
) {
4946 case -NFS4ERR_DELAY
:
4947 case -NFS4ERR_GRACE
:
4948 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
4949 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
4950 task
->tk_status
= 0;
4952 case -NFS4ERR_RETRY_UNCACHED_REP
:
4953 rpc_restart_call_prepare(task
);
4956 dprintk("<-- %s\n", __func__
);
4959 struct rpc_call_ops nfs4_get_lease_time_ops
= {
4960 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
4961 .rpc_call_done
= nfs4_get_lease_time_done
,
4964 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
4966 struct rpc_task
*task
;
4967 struct nfs4_get_lease_time_args args
;
4968 struct nfs4_get_lease_time_res res
= {
4969 .lr_fsinfo
= fsinfo
,
4971 struct nfs4_get_lease_time_data data
= {
4976 struct rpc_message msg
= {
4977 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
4981 struct rpc_task_setup task_setup
= {
4982 .rpc_client
= clp
->cl_rpcclient
,
4983 .rpc_message
= &msg
,
4984 .callback_ops
= &nfs4_get_lease_time_ops
,
4985 .callback_data
= &data
,
4986 .flags
= RPC_TASK_TIMEOUT
,
4990 dprintk("--> %s\n", __func__
);
4991 task
= rpc_run_task(&task_setup
);
4994 status
= PTR_ERR(task
);
4996 status
= task
->tk_status
;
4999 dprintk("<-- %s return %d\n", __func__
, status
);
5005 * Reset a slot table
5007 static int nfs4_reset_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
5010 struct nfs4_slot
*new = NULL
;
5014 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
5015 max_reqs
, tbl
->max_slots
);
5017 /* Does the newly negotiated max_reqs match the existing slot table? */
5018 if (max_reqs
!= tbl
->max_slots
) {
5020 new = kmalloc(max_reqs
* sizeof(struct nfs4_slot
),
5027 spin_lock(&tbl
->slot_tbl_lock
);
5030 tbl
->max_slots
= max_reqs
;
5032 for (i
= 0; i
< tbl
->max_slots
; ++i
)
5033 tbl
->slots
[i
].seq_nr
= ivalue
;
5034 spin_unlock(&tbl
->slot_tbl_lock
);
5035 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5036 tbl
, tbl
->slots
, tbl
->max_slots
);
5038 dprintk("<-- %s: return %d\n", __func__
, ret
);
5043 * Reset the forechannel and backchannel slot tables
5045 static int nfs4_reset_slot_tables(struct nfs4_session
*session
)
5049 status
= nfs4_reset_slot_table(&session
->fc_slot_table
,
5050 session
->fc_attrs
.max_reqs
, 1);
5054 status
= nfs4_reset_slot_table(&session
->bc_slot_table
,
5055 session
->bc_attrs
.max_reqs
, 0);
5059 /* Destroy the slot table */
5060 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
5062 if (session
->fc_slot_table
.slots
!= NULL
) {
5063 kfree(session
->fc_slot_table
.slots
);
5064 session
->fc_slot_table
.slots
= NULL
;
5066 if (session
->bc_slot_table
.slots
!= NULL
) {
5067 kfree(session
->bc_slot_table
.slots
);
5068 session
->bc_slot_table
.slots
= NULL
;
5074 * Initialize slot table
5076 static int nfs4_init_slot_table(struct nfs4_slot_table
*tbl
,
5077 int max_slots
, int ivalue
)
5079 struct nfs4_slot
*slot
;
5082 BUG_ON(max_slots
> NFS4_MAX_SLOT_TABLE
);
5084 dprintk("--> %s: max_reqs=%u\n", __func__
, max_slots
);
5086 slot
= kcalloc(max_slots
, sizeof(struct nfs4_slot
), GFP_NOFS
);
5091 spin_lock(&tbl
->slot_tbl_lock
);
5092 tbl
->max_slots
= max_slots
;
5094 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
5095 spin_unlock(&tbl
->slot_tbl_lock
);
5096 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5097 tbl
, tbl
->slots
, tbl
->max_slots
);
5099 dprintk("<-- %s: return %d\n", __func__
, ret
);
5104 * Initialize the forechannel and backchannel tables
5106 static int nfs4_init_slot_tables(struct nfs4_session
*session
)
5108 struct nfs4_slot_table
*tbl
;
5111 tbl
= &session
->fc_slot_table
;
5112 if (tbl
->slots
== NULL
) {
5113 status
= nfs4_init_slot_table(tbl
,
5114 session
->fc_attrs
.max_reqs
, 1);
5119 tbl
= &session
->bc_slot_table
;
5120 if (tbl
->slots
== NULL
) {
5121 status
= nfs4_init_slot_table(tbl
,
5122 session
->bc_attrs
.max_reqs
, 0);
5124 nfs4_destroy_slot_tables(session
);
5130 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5132 struct nfs4_session
*session
;
5133 struct nfs4_slot_table
*tbl
;
5135 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5139 tbl
= &session
->fc_slot_table
;
5140 tbl
->highest_used_slotid
= -1;
5141 spin_lock_init(&tbl
->slot_tbl_lock
);
5142 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5143 init_completion(&tbl
->complete
);
5145 tbl
= &session
->bc_slot_table
;
5146 tbl
->highest_used_slotid
= -1;
5147 spin_lock_init(&tbl
->slot_tbl_lock
);
5148 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5149 init_completion(&tbl
->complete
);
5151 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5157 void nfs4_destroy_session(struct nfs4_session
*session
)
5159 nfs4_proc_destroy_session(session
);
5160 dprintk("%s Destroy backchannel for xprt %p\n",
5161 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
5162 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
5163 NFS41_BC_MIN_CALLBACKS
);
5164 nfs4_destroy_slot_tables(session
);
5169 * Initialize the values to be used by the client in CREATE_SESSION
5170 * If nfs4_init_session set the fore channel request and response sizes,
5173 * Set the back channel max_resp_sz_cached to zero to force the client to
5174 * always set csa_cachethis to FALSE because the current implementation
5175 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5177 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5179 struct nfs4_session
*session
= args
->client
->cl_session
;
5180 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5181 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5184 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5186 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5187 /* Fore channel attributes */
5188 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5189 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5190 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5191 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
5193 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5194 "max_ops=%u max_reqs=%u\n",
5196 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5197 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5199 /* Back channel attributes */
5200 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5201 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5202 args
->bc_attrs
.max_resp_sz_cached
= 0;
5203 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5204 args
->bc_attrs
.max_reqs
= 1;
5206 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5207 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5209 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5210 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5211 args
->bc_attrs
.max_reqs
);
5214 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5216 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5217 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5219 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5222 * Our requested max_ops is the minimum we need; we're not
5223 * prepared to break up compounds into smaller pieces than that.
5224 * So, no point even trying to continue if the server won't
5227 if (rcvd
->max_ops
< sent
->max_ops
)
5229 if (rcvd
->max_reqs
== 0)
5234 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5236 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5237 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5239 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5241 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5243 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5245 /* These would render the backchannel useless: */
5246 if (rcvd
->max_ops
== 0)
5248 if (rcvd
->max_reqs
== 0)
5253 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5254 struct nfs4_session
*session
)
5258 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5261 return nfs4_verify_back_channel_attrs(args
, session
);
5264 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
5266 struct nfs4_session
*session
= clp
->cl_session
;
5267 struct nfs41_create_session_args args
= {
5269 .cb_program
= NFS4_CALLBACK
,
5271 struct nfs41_create_session_res res
= {
5274 struct rpc_message msg
= {
5275 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5281 nfs4_init_channel_attrs(&args
);
5282 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5284 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5287 /* Verify the session's negotiated channel_attrs values */
5288 status
= nfs4_verify_channel_attrs(&args
, session
);
5290 /* Increment the clientid slot sequence id */
5298 * Issues a CREATE_SESSION operation to the server.
5299 * It is the responsibility of the caller to verify the session is
5300 * expired before calling this routine.
5302 int nfs4_proc_create_session(struct nfs_client
*clp
)
5306 struct nfs4_session
*session
= clp
->cl_session
;
5308 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5310 status
= _nfs4_proc_create_session(clp
);
5314 /* Init and reset the fore channel */
5315 status
= nfs4_init_slot_tables(session
);
5316 dprintk("slot table initialization returned %d\n", status
);
5319 status
= nfs4_reset_slot_tables(session
);
5320 dprintk("slot table reset returned %d\n", status
);
5324 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5325 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5326 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5328 dprintk("<-- %s\n", __func__
);
5333 * Issue the over-the-wire RPC DESTROY_SESSION.
5334 * The caller must serialize access to this routine.
5336 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
5339 struct rpc_message msg
;
5341 dprintk("--> nfs4_proc_destroy_session\n");
5343 /* session is still being setup */
5344 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5347 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
5348 msg
.rpc_argp
= session
;
5349 msg
.rpc_resp
= NULL
;
5350 msg
.rpc_cred
= NULL
;
5351 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5355 "Got error %d from the server on DESTROY_SESSION. "
5356 "Session has been destroyed regardless...\n", status
);
5358 dprintk("<-- nfs4_proc_destroy_session\n");
5362 int nfs4_init_session(struct nfs_server
*server
)
5364 struct nfs_client
*clp
= server
->nfs_client
;
5365 struct nfs4_session
*session
;
5366 unsigned int rsize
, wsize
;
5369 if (!nfs4_has_session(clp
))
5372 session
= clp
->cl_session
;
5373 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5376 rsize
= server
->rsize
;
5378 rsize
= NFS_MAX_FILE_IO_SIZE
;
5379 wsize
= server
->wsize
;
5381 wsize
= NFS_MAX_FILE_IO_SIZE
;
5383 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5384 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5386 ret
= nfs4_recover_expired_lease(server
);
5388 ret
= nfs4_check_client_ready(clp
);
5392 int nfs4_init_ds_session(struct nfs_client
*clp
)
5394 struct nfs4_session
*session
= clp
->cl_session
;
5397 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5400 ret
= nfs4_client_recover_expired_lease(clp
);
5402 /* Test for the DS role */
5403 if (!is_ds_client(clp
))
5406 ret
= nfs4_check_client_ready(clp
);
5410 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5414 * Renew the cl_session lease.
5416 struct nfs4_sequence_data
{
5417 struct nfs_client
*clp
;
5418 struct nfs4_sequence_args args
;
5419 struct nfs4_sequence_res res
;
5422 static void nfs41_sequence_release(void *data
)
5424 struct nfs4_sequence_data
*calldata
= data
;
5425 struct nfs_client
*clp
= calldata
->clp
;
5427 if (atomic_read(&clp
->cl_count
) > 1)
5428 nfs4_schedule_state_renewal(clp
);
5429 nfs_put_client(clp
);
5433 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5435 switch(task
->tk_status
) {
5436 case -NFS4ERR_DELAY
:
5437 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5440 nfs4_schedule_lease_recovery(clp
);
5445 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5447 struct nfs4_sequence_data
*calldata
= data
;
5448 struct nfs_client
*clp
= calldata
->clp
;
5450 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5453 if (task
->tk_status
< 0) {
5454 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5455 if (atomic_read(&clp
->cl_count
) == 1)
5458 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5459 rpc_restart_call_prepare(task
);
5463 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5465 dprintk("<-- %s\n", __func__
);
5468 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5470 struct nfs4_sequence_data
*calldata
= data
;
5471 struct nfs_client
*clp
= calldata
->clp
;
5472 struct nfs4_sequence_args
*args
;
5473 struct nfs4_sequence_res
*res
;
5475 args
= task
->tk_msg
.rpc_argp
;
5476 res
= task
->tk_msg
.rpc_resp
;
5478 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, 0, task
))
5480 rpc_call_start(task
);
5483 static const struct rpc_call_ops nfs41_sequence_ops
= {
5484 .rpc_call_done
= nfs41_sequence_call_done
,
5485 .rpc_call_prepare
= nfs41_sequence_prepare
,
5486 .rpc_release
= nfs41_sequence_release
,
5489 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5491 struct nfs4_sequence_data
*calldata
;
5492 struct rpc_message msg
= {
5493 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5496 struct rpc_task_setup task_setup_data
= {
5497 .rpc_client
= clp
->cl_rpcclient
,
5498 .rpc_message
= &msg
,
5499 .callback_ops
= &nfs41_sequence_ops
,
5500 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5503 if (!atomic_inc_not_zero(&clp
->cl_count
))
5504 return ERR_PTR(-EIO
);
5505 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5506 if (calldata
== NULL
) {
5507 nfs_put_client(clp
);
5508 return ERR_PTR(-ENOMEM
);
5510 msg
.rpc_argp
= &calldata
->args
;
5511 msg
.rpc_resp
= &calldata
->res
;
5512 calldata
->clp
= clp
;
5513 task_setup_data
.callback_data
= calldata
;
5515 return rpc_run_task(&task_setup_data
);
5518 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
5520 struct rpc_task
*task
;
5523 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
5525 task
= _nfs41_proc_sequence(clp
, cred
);
5527 ret
= PTR_ERR(task
);
5529 rpc_put_task_async(task
);
5530 dprintk("<-- %s status=%d\n", __func__
, ret
);
5534 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5536 struct rpc_task
*task
;
5539 task
= _nfs41_proc_sequence(clp
, cred
);
5541 ret
= PTR_ERR(task
);
5544 ret
= rpc_wait_for_completion_task(task
);
5546 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5548 if (task
->tk_status
== 0)
5549 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5550 ret
= task
->tk_status
;
5554 dprintk("<-- %s status=%d\n", __func__
, ret
);
5558 struct nfs4_reclaim_complete_data
{
5559 struct nfs_client
*clp
;
5560 struct nfs41_reclaim_complete_args arg
;
5561 struct nfs41_reclaim_complete_res res
;
5564 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5566 struct nfs4_reclaim_complete_data
*calldata
= data
;
5568 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5569 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5570 &calldata
->arg
.seq_args
,
5571 &calldata
->res
.seq_res
, 0, task
))
5574 rpc_call_start(task
);
5577 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5579 switch(task
->tk_status
) {
5581 case -NFS4ERR_COMPLETE_ALREADY
:
5582 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5584 case -NFS4ERR_DELAY
:
5585 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5587 case -NFS4ERR_RETRY_UNCACHED_REP
:
5590 nfs4_schedule_lease_recovery(clp
);
5595 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5597 struct nfs4_reclaim_complete_data
*calldata
= data
;
5598 struct nfs_client
*clp
= calldata
->clp
;
5599 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5601 dprintk("--> %s\n", __func__
);
5602 if (!nfs41_sequence_done(task
, res
))
5605 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5606 rpc_restart_call_prepare(task
);
5609 dprintk("<-- %s\n", __func__
);
5612 static void nfs4_free_reclaim_complete_data(void *data
)
5614 struct nfs4_reclaim_complete_data
*calldata
= data
;
5619 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5620 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5621 .rpc_call_done
= nfs4_reclaim_complete_done
,
5622 .rpc_release
= nfs4_free_reclaim_complete_data
,
5626 * Issue a global reclaim complete.
5628 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5630 struct nfs4_reclaim_complete_data
*calldata
;
5631 struct rpc_task
*task
;
5632 struct rpc_message msg
= {
5633 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5635 struct rpc_task_setup task_setup_data
= {
5636 .rpc_client
= clp
->cl_rpcclient
,
5637 .rpc_message
= &msg
,
5638 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5639 .flags
= RPC_TASK_ASYNC
,
5641 int status
= -ENOMEM
;
5643 dprintk("--> %s\n", __func__
);
5644 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5645 if (calldata
== NULL
)
5647 calldata
->clp
= clp
;
5648 calldata
->arg
.one_fs
= 0;
5650 msg
.rpc_argp
= &calldata
->arg
;
5651 msg
.rpc_resp
= &calldata
->res
;
5652 task_setup_data
.callback_data
= calldata
;
5653 task
= rpc_run_task(&task_setup_data
);
5655 status
= PTR_ERR(task
);
5658 status
= nfs4_wait_for_completion_rpc_task(task
);
5660 status
= task
->tk_status
;
5664 dprintk("<-- %s status=%d\n", __func__
, status
);
5669 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
5671 struct nfs4_layoutget
*lgp
= calldata
;
5672 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5674 dprintk("--> %s\n", __func__
);
5675 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
5676 * right now covering the LAYOUTGET we are about to send.
5677 * However, that is not so catastrophic, and there seems
5678 * to be no way to prevent it completely.
5680 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
5681 &lgp
->res
.seq_res
, 0, task
))
5683 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
5684 NFS_I(lgp
->args
.inode
)->layout
,
5685 lgp
->args
.ctx
->state
)) {
5686 rpc_exit(task
, NFS4_OK
);
5689 rpc_call_start(task
);
5692 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
5694 struct nfs4_layoutget
*lgp
= calldata
;
5695 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5697 dprintk("--> %s\n", __func__
);
5699 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
5702 switch (task
->tk_status
) {
5705 case -NFS4ERR_LAYOUTTRYLATER
:
5706 case -NFS4ERR_RECALLCONFLICT
:
5707 task
->tk_status
= -NFS4ERR_DELAY
;
5710 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5711 rpc_restart_call_prepare(task
);
5715 dprintk("<-- %s\n", __func__
);
5718 static void nfs4_layoutget_release(void *calldata
)
5720 struct nfs4_layoutget
*lgp
= calldata
;
5722 dprintk("--> %s\n", __func__
);
5723 put_nfs_open_context(lgp
->args
.ctx
);
5725 dprintk("<-- %s\n", __func__
);
5728 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
5729 .rpc_call_prepare
= nfs4_layoutget_prepare
,
5730 .rpc_call_done
= nfs4_layoutget_done
,
5731 .rpc_release
= nfs4_layoutget_release
,
5734 int nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
)
5736 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5737 struct rpc_task
*task
;
5738 struct rpc_message msg
= {
5739 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
5740 .rpc_argp
= &lgp
->args
,
5741 .rpc_resp
= &lgp
->res
,
5743 struct rpc_task_setup task_setup_data
= {
5744 .rpc_client
= server
->client
,
5745 .rpc_message
= &msg
,
5746 .callback_ops
= &nfs4_layoutget_call_ops
,
5747 .callback_data
= lgp
,
5748 .flags
= RPC_TASK_ASYNC
,
5752 dprintk("--> %s\n", __func__
);
5754 lgp
->res
.layoutp
= &lgp
->args
.layout
;
5755 lgp
->res
.seq_res
.sr_slot
= NULL
;
5756 task
= rpc_run_task(&task_setup_data
);
5758 return PTR_ERR(task
);
5759 status
= nfs4_wait_for_completion_rpc_task(task
);
5761 status
= task
->tk_status
;
5763 status
= pnfs_layout_process(lgp
);
5765 dprintk("<-- %s status=%d\n", __func__
, status
);
5770 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
5772 struct nfs4_layoutreturn
*lrp
= calldata
;
5774 dprintk("--> %s\n", __func__
);
5775 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
5776 &lrp
->res
.seq_res
, 0, task
))
5778 rpc_call_start(task
);
5781 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
5783 struct nfs4_layoutreturn
*lrp
= calldata
;
5784 struct nfs_server
*server
;
5785 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
5787 dprintk("--> %s\n", __func__
);
5789 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
5792 server
= NFS_SERVER(lrp
->args
.inode
);
5793 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5794 rpc_restart_call_prepare(task
);
5797 spin_lock(&lo
->plh_inode
->i_lock
);
5798 if (task
->tk_status
== 0) {
5799 if (lrp
->res
.lrs_present
) {
5800 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
5802 BUG_ON(!list_empty(&lo
->plh_segs
));
5804 lo
->plh_block_lgets
--;
5805 spin_unlock(&lo
->plh_inode
->i_lock
);
5806 dprintk("<-- %s\n", __func__
);
5809 static void nfs4_layoutreturn_release(void *calldata
)
5811 struct nfs4_layoutreturn
*lrp
= calldata
;
5813 dprintk("--> %s\n", __func__
);
5814 put_layout_hdr(lrp
->args
.layout
);
5816 dprintk("<-- %s\n", __func__
);
5819 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
5820 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
5821 .rpc_call_done
= nfs4_layoutreturn_done
,
5822 .rpc_release
= nfs4_layoutreturn_release
,
5825 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
5827 struct rpc_task
*task
;
5828 struct rpc_message msg
= {
5829 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
5830 .rpc_argp
= &lrp
->args
,
5831 .rpc_resp
= &lrp
->res
,
5833 struct rpc_task_setup task_setup_data
= {
5834 .rpc_client
= lrp
->clp
->cl_rpcclient
,
5835 .rpc_message
= &msg
,
5836 .callback_ops
= &nfs4_layoutreturn_call_ops
,
5837 .callback_data
= lrp
,
5841 dprintk("--> %s\n", __func__
);
5842 task
= rpc_run_task(&task_setup_data
);
5844 return PTR_ERR(task
);
5845 status
= task
->tk_status
;
5846 dprintk("<-- %s status=%d\n", __func__
, status
);
5852 * Retrieve the list of Data Server devices from the MDS.
5854 static int _nfs4_getdevicelist(struct nfs_server
*server
,
5855 const struct nfs_fh
*fh
,
5856 struct pnfs_devicelist
*devlist
)
5858 struct nfs4_getdevicelist_args args
= {
5860 .layoutclass
= server
->pnfs_curr_ld
->id
,
5862 struct nfs4_getdevicelist_res res
= {
5865 struct rpc_message msg
= {
5866 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
5872 dprintk("--> %s\n", __func__
);
5873 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
5875 dprintk("<-- %s status=%d\n", __func__
, status
);
5879 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
5880 const struct nfs_fh
*fh
,
5881 struct pnfs_devicelist
*devlist
)
5883 struct nfs4_exception exception
= { };
5887 err
= nfs4_handle_exception(server
,
5888 _nfs4_getdevicelist(server
, fh
, devlist
),
5890 } while (exception
.retry
);
5892 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
5893 err
, devlist
->num_devs
);
5897 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
5900 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5902 struct nfs4_getdeviceinfo_args args
= {
5905 struct nfs4_getdeviceinfo_res res
= {
5908 struct rpc_message msg
= {
5909 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
5915 dprintk("--> %s\n", __func__
);
5916 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5917 dprintk("<-- %s status=%d\n", __func__
, status
);
5922 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5924 struct nfs4_exception exception
= { };
5928 err
= nfs4_handle_exception(server
,
5929 _nfs4_proc_getdeviceinfo(server
, pdev
),
5931 } while (exception
.retry
);
5934 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
5936 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
5938 struct nfs4_layoutcommit_data
*data
= calldata
;
5939 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
5941 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
5942 &data
->res
.seq_res
, 1, task
))
5944 rpc_call_start(task
);
5948 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
5950 struct nfs4_layoutcommit_data
*data
= calldata
;
5951 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
5953 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5956 switch (task
->tk_status
) { /* Just ignore these failures */
5957 case NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
5958 case NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
5959 case NFS4ERR_BADLAYOUT
: /* no layout */
5960 case NFS4ERR_GRACE
: /* loca_recalim always false */
5961 task
->tk_status
= 0;
5964 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5965 rpc_restart_call_prepare(task
);
5969 if (task
->tk_status
== 0)
5970 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
5974 static void nfs4_layoutcommit_release(void *calldata
)
5976 struct nfs4_layoutcommit_data
*data
= calldata
;
5977 struct pnfs_layout_segment
*lseg
, *tmp
;
5978 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
5980 pnfs_cleanup_layoutcommit(data
);
5981 /* Matched by references in pnfs_set_layoutcommit */
5982 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
5983 list_del_init(&lseg
->pls_lc_list
);
5984 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
5989 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
5990 smp_mb__after_clear_bit();
5991 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
5993 put_rpccred(data
->cred
);
5997 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
5998 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
5999 .rpc_call_done
= nfs4_layoutcommit_done
,
6000 .rpc_release
= nfs4_layoutcommit_release
,
6004 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6006 struct rpc_message msg
= {
6007 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6008 .rpc_argp
= &data
->args
,
6009 .rpc_resp
= &data
->res
,
6010 .rpc_cred
= data
->cred
,
6012 struct rpc_task_setup task_setup_data
= {
6013 .task
= &data
->task
,
6014 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6015 .rpc_message
= &msg
,
6016 .callback_ops
= &nfs4_layoutcommit_ops
,
6017 .callback_data
= data
,
6018 .flags
= RPC_TASK_ASYNC
,
6020 struct rpc_task
*task
;
6023 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6024 "lbw: %llu inode %lu\n",
6025 data
->task
.tk_pid
, sync
,
6026 data
->args
.lastbytewritten
,
6027 data
->args
.inode
->i_ino
);
6029 task
= rpc_run_task(&task_setup_data
);
6031 return PTR_ERR(task
);
6034 status
= nfs4_wait_for_completion_rpc_task(task
);
6037 status
= task
->tk_status
;
6039 dprintk("%s: status %d\n", __func__
, status
);
6045 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6046 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6048 struct nfs41_secinfo_no_name_args args
= {
6049 .style
= SECINFO_STYLE_CURRENT_FH
,
6051 struct nfs4_secinfo_res res
= {
6054 struct rpc_message msg
= {
6055 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6059 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6063 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6064 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6066 struct nfs4_exception exception
= { };
6069 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6072 case -NFS4ERR_WRONGSEC
:
6073 case -NFS4ERR_NOTSUPP
:
6076 err
= nfs4_handle_exception(server
, err
, &exception
);
6078 } while (exception
.retry
);
6083 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6084 struct nfs_fsinfo
*info
)
6088 rpc_authflavor_t flavor
;
6089 struct nfs4_secinfo_flavors
*flavors
;
6091 page
= alloc_page(GFP_KERNEL
);
6097 flavors
= page_address(page
);
6098 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6101 * Fall back on "guess and check" method if
6102 * the server doesn't support SECINFO_NO_NAME
6104 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6105 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6111 flavor
= nfs_find_best_sec(flavors
);
6113 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6122 static int _nfs41_test_stateid(struct nfs_server
*server
, struct nfs4_state
*state
)
6125 struct nfs41_test_stateid_args args
= {
6126 .stateid
= &state
->stateid
,
6128 struct nfs41_test_stateid_res res
;
6129 struct rpc_message msg
= {
6130 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6134 args
.seq_args
.sa_session
= res
.seq_res
.sr_session
= NULL
;
6135 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0, 1);
6139 static int nfs41_test_stateid(struct nfs_server
*server
, struct nfs4_state
*state
)
6141 struct nfs4_exception exception
= { };
6144 err
= nfs4_handle_exception(server
,
6145 _nfs41_test_stateid(server
, state
),
6147 } while (exception
.retry
);
6151 static int _nfs4_free_stateid(struct nfs_server
*server
, struct nfs4_state
*state
)
6154 struct nfs41_free_stateid_args args
= {
6155 .stateid
= &state
->stateid
,
6157 struct nfs41_free_stateid_res res
;
6158 struct rpc_message msg
= {
6159 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6164 args
.seq_args
.sa_session
= res
.seq_res
.sr_session
= NULL
;
6165 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0, 1);
6169 static int nfs41_free_stateid(struct nfs_server
*server
, struct nfs4_state
*state
)
6171 struct nfs4_exception exception
= { };
6174 err
= nfs4_handle_exception(server
,
6175 _nfs4_free_stateid(server
, state
),
6177 } while (exception
.retry
);
6180 #endif /* CONFIG_NFS_V4_1 */
6182 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6183 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6184 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6185 .recover_open
= nfs4_open_reclaim
,
6186 .recover_lock
= nfs4_lock_reclaim
,
6187 .establish_clid
= nfs4_init_clientid
,
6188 .get_clid_cred
= nfs4_get_setclientid_cred
,
6191 #if defined(CONFIG_NFS_V4_1)
6192 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6193 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6194 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6195 .recover_open
= nfs4_open_reclaim
,
6196 .recover_lock
= nfs4_lock_reclaim
,
6197 .establish_clid
= nfs41_init_clientid
,
6198 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6199 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6201 #endif /* CONFIG_NFS_V4_1 */
6203 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6204 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6205 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6206 .recover_open
= nfs4_open_expired
,
6207 .recover_lock
= nfs4_lock_expired
,
6208 .establish_clid
= nfs4_init_clientid
,
6209 .get_clid_cred
= nfs4_get_setclientid_cred
,
6212 #if defined(CONFIG_NFS_V4_1)
6213 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6214 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6215 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6216 .recover_open
= nfs41_open_expired
,
6217 .recover_lock
= nfs41_lock_expired
,
6218 .establish_clid
= nfs41_init_clientid
,
6219 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6221 #endif /* CONFIG_NFS_V4_1 */
6223 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6224 .sched_state_renewal
= nfs4_proc_async_renew
,
6225 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6226 .renew_lease
= nfs4_proc_renew
,
6229 #if defined(CONFIG_NFS_V4_1)
6230 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6231 .sched_state_renewal
= nfs41_proc_async_sequence
,
6232 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6233 .renew_lease
= nfs4_proc_sequence
,
6237 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6239 .call_sync
= _nfs4_call_sync
,
6240 .validate_stateid
= nfs4_validate_delegation_stateid
,
6241 .find_root_sec
= nfs4_find_root_sec
,
6242 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6243 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6244 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6247 #if defined(CONFIG_NFS_V4_1)
6248 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6250 .call_sync
= _nfs4_call_sync_session
,
6251 .validate_stateid
= nfs41_validate_delegation_stateid
,
6252 .find_root_sec
= nfs41_find_root_sec
,
6253 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6254 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6255 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6259 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6260 [0] = &nfs_v4_0_minor_ops
,
6261 #if defined(CONFIG_NFS_V4_1)
6262 [1] = &nfs_v4_1_minor_ops
,
6266 static const struct inode_operations nfs4_file_inode_operations
= {
6267 .permission
= nfs_permission
,
6268 .getattr
= nfs_getattr
,
6269 .setattr
= nfs_setattr
,
6270 .getxattr
= generic_getxattr
,
6271 .setxattr
= generic_setxattr
,
6272 .listxattr
= generic_listxattr
,
6273 .removexattr
= generic_removexattr
,
6276 const struct nfs_rpc_ops nfs_v4_clientops
= {
6277 .version
= 4, /* protocol version */
6278 .dentry_ops
= &nfs4_dentry_operations
,
6279 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6280 .file_inode_ops
= &nfs4_file_inode_operations
,
6281 .file_ops
= &nfs4_file_operations
,
6282 .getroot
= nfs4_proc_get_root
,
6283 .getattr
= nfs4_proc_getattr
,
6284 .setattr
= nfs4_proc_setattr
,
6285 .lookup
= nfs4_proc_lookup
,
6286 .access
= nfs4_proc_access
,
6287 .readlink
= nfs4_proc_readlink
,
6288 .create
= nfs4_proc_create
,
6289 .remove
= nfs4_proc_remove
,
6290 .unlink_setup
= nfs4_proc_unlink_setup
,
6291 .unlink_done
= nfs4_proc_unlink_done
,
6292 .rename
= nfs4_proc_rename
,
6293 .rename_setup
= nfs4_proc_rename_setup
,
6294 .rename_done
= nfs4_proc_rename_done
,
6295 .link
= nfs4_proc_link
,
6296 .symlink
= nfs4_proc_symlink
,
6297 .mkdir
= nfs4_proc_mkdir
,
6298 .rmdir
= nfs4_proc_remove
,
6299 .readdir
= nfs4_proc_readdir
,
6300 .mknod
= nfs4_proc_mknod
,
6301 .statfs
= nfs4_proc_statfs
,
6302 .fsinfo
= nfs4_proc_fsinfo
,
6303 .pathconf
= nfs4_proc_pathconf
,
6304 .set_capabilities
= nfs4_server_capabilities
,
6305 .decode_dirent
= nfs4_decode_dirent
,
6306 .read_setup
= nfs4_proc_read_setup
,
6307 .read_done
= nfs4_read_done
,
6308 .write_setup
= nfs4_proc_write_setup
,
6309 .write_done
= nfs4_write_done
,
6310 .commit_setup
= nfs4_proc_commit_setup
,
6311 .commit_done
= nfs4_commit_done
,
6312 .lock
= nfs4_proc_lock
,
6313 .clear_acl_cache
= nfs4_zap_acl_attr
,
6314 .close_context
= nfs4_close_context
,
6315 .open_context
= nfs4_atomic_open
,
6316 .init_client
= nfs4_init_client
,
6317 .secinfo
= nfs4_proc_secinfo
,
6320 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6321 .prefix
= XATTR_NAME_NFSV4_ACL
,
6322 .list
= nfs4_xattr_list_nfs4_acl
,
6323 .get
= nfs4_xattr_get_nfs4_acl
,
6324 .set
= nfs4_xattr_set_nfs4_acl
,
6327 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6328 &nfs4_xattr_nfs4_acl_handler
,