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/nfs_idmap.h>
56 #include <linux/sunrpc/bc_xprt.h>
57 #include <linux/xattr.h>
58 #include <linux/utsname.h>
59 #include <linux/freezer.h>
62 #include "delegation.h"
68 #define NFSDBG_FACILITY NFSDBG_PROC
70 #define NFS4_POLL_RETRY_MIN (HZ/10)
71 #define NFS4_POLL_RETRY_MAX (15*HZ)
73 #define NFS4_MAX_LOOP_ON_RECOVER (10)
76 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
77 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
78 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
79 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
80 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
81 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
82 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
83 struct nfs4_state
*state
);
84 #ifdef CONFIG_NFS_V4_1
85 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*);
86 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*);
88 /* Prevent leaks of NFSv4 errors into userland */
89 static int nfs4_map_errors(int err
)
94 case -NFS4ERR_RESOURCE
:
96 case -NFS4ERR_WRONGSEC
:
98 case -NFS4ERR_BADOWNER
:
99 case -NFS4ERR_BADNAME
:
102 dprintk("%s could not handle NFSv4 error %d\n",
110 * This is our standard bitmap for GETATTR requests.
112 const u32 nfs4_fattr_bitmap
[2] = {
114 | FATTR4_WORD0_CHANGE
117 | FATTR4_WORD0_FILEID
,
119 | FATTR4_WORD1_NUMLINKS
121 | FATTR4_WORD1_OWNER_GROUP
122 | FATTR4_WORD1_RAWDEV
123 | FATTR4_WORD1_SPACE_USED
124 | FATTR4_WORD1_TIME_ACCESS
125 | FATTR4_WORD1_TIME_METADATA
126 | FATTR4_WORD1_TIME_MODIFY
129 const u32 nfs4_statfs_bitmap
[2] = {
130 FATTR4_WORD0_FILES_AVAIL
131 | FATTR4_WORD0_FILES_FREE
132 | FATTR4_WORD0_FILES_TOTAL
,
133 FATTR4_WORD1_SPACE_AVAIL
134 | FATTR4_WORD1_SPACE_FREE
135 | FATTR4_WORD1_SPACE_TOTAL
138 const u32 nfs4_pathconf_bitmap
[2] = {
140 | FATTR4_WORD0_MAXNAME
,
144 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
145 | FATTR4_WORD0_MAXREAD
146 | FATTR4_WORD0_MAXWRITE
147 | FATTR4_WORD0_LEASE_TIME
,
148 FATTR4_WORD1_TIME_DELTA
149 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
150 FATTR4_WORD2_LAYOUT_BLKSIZE
153 const u32 nfs4_fs_locations_bitmap
[2] = {
155 | FATTR4_WORD0_CHANGE
158 | FATTR4_WORD0_FILEID
159 | FATTR4_WORD0_FS_LOCATIONS
,
161 | FATTR4_WORD1_NUMLINKS
163 | FATTR4_WORD1_OWNER_GROUP
164 | FATTR4_WORD1_RAWDEV
165 | FATTR4_WORD1_SPACE_USED
166 | FATTR4_WORD1_TIME_ACCESS
167 | FATTR4_WORD1_TIME_METADATA
168 | FATTR4_WORD1_TIME_MODIFY
169 | FATTR4_WORD1_MOUNTED_ON_FILEID
172 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
173 struct nfs4_readdir_arg
*readdir
)
177 BUG_ON(readdir
->count
< 80);
179 readdir
->cookie
= cookie
;
180 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
185 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
190 * NFSv4 servers do not return entries for '.' and '..'
191 * Therefore, we fake these entries here. We let '.'
192 * have cookie 0 and '..' have cookie 1. Note that
193 * when talking to the server, we always send cookie 0
196 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
199 *p
++ = xdr_one
; /* next */
200 *p
++ = xdr_zero
; /* cookie, first word */
201 *p
++ = xdr_one
; /* cookie, second word */
202 *p
++ = xdr_one
; /* entry len */
203 memcpy(p
, ".\0\0\0", 4); /* entry */
205 *p
++ = xdr_one
; /* bitmap length */
206 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
207 *p
++ = htonl(8); /* attribute buffer length */
208 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
211 *p
++ = xdr_one
; /* next */
212 *p
++ = xdr_zero
; /* cookie, first word */
213 *p
++ = xdr_two
; /* cookie, second word */
214 *p
++ = xdr_two
; /* entry len */
215 memcpy(p
, "..\0\0", 4); /* entry */
217 *p
++ = xdr_one
; /* bitmap length */
218 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
219 *p
++ = htonl(8); /* attribute buffer length */
220 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
222 readdir
->pgbase
= (char *)p
- (char *)start
;
223 readdir
->count
-= readdir
->pgbase
;
224 kunmap_atomic(start
, KM_USER0
);
227 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
233 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
234 nfs_wait_bit_killable
, TASK_KILLABLE
);
238 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
245 *timeout
= NFS4_POLL_RETRY_MIN
;
246 if (*timeout
> NFS4_POLL_RETRY_MAX
)
247 *timeout
= NFS4_POLL_RETRY_MAX
;
248 freezable_schedule_timeout_killable(*timeout
);
249 if (fatal_signal_pending(current
))
255 /* This is the error handling routine for processes that are allowed
258 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
260 struct nfs_client
*clp
= server
->nfs_client
;
261 struct nfs4_state
*state
= exception
->state
;
264 exception
->retry
= 0;
268 case -NFS4ERR_ADMIN_REVOKED
:
269 case -NFS4ERR_BAD_STATEID
:
270 case -NFS4ERR_OPENMODE
:
273 nfs4_schedule_stateid_recovery(server
, state
);
274 goto wait_on_recovery
;
275 case -NFS4ERR_EXPIRED
:
277 nfs4_schedule_stateid_recovery(server
, state
);
278 case -NFS4ERR_STALE_STATEID
:
279 case -NFS4ERR_STALE_CLIENTID
:
280 nfs4_schedule_lease_recovery(clp
);
281 goto wait_on_recovery
;
282 #if defined(CONFIG_NFS_V4_1)
283 case -NFS4ERR_BADSESSION
:
284 case -NFS4ERR_BADSLOT
:
285 case -NFS4ERR_BAD_HIGH_SLOT
:
286 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
287 case -NFS4ERR_DEADSESSION
:
288 case -NFS4ERR_SEQ_FALSE_RETRY
:
289 case -NFS4ERR_SEQ_MISORDERED
:
290 dprintk("%s ERROR: %d Reset session\n", __func__
,
292 nfs4_schedule_session_recovery(clp
->cl_session
);
293 exception
->retry
= 1;
295 #endif /* defined(CONFIG_NFS_V4_1) */
296 case -NFS4ERR_FILE_OPEN
:
297 if (exception
->timeout
> HZ
) {
298 /* We have retried a decent amount, time to
307 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
310 case -NFS4ERR_RETRY_UNCACHED_REP
:
311 case -NFS4ERR_OLD_STATEID
:
312 exception
->retry
= 1;
314 case -NFS4ERR_BADOWNER
:
315 /* The following works around a Linux server bug! */
316 case -NFS4ERR_BADNAME
:
317 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
318 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
319 exception
->retry
= 1;
320 printk(KERN_WARNING
"NFS: v4 server %s "
321 "does not accept raw "
323 "Reenabling the idmapper.\n",
324 server
->nfs_client
->cl_hostname
);
327 /* We failed to handle the error */
328 return nfs4_map_errors(ret
);
330 ret
= nfs4_wait_clnt_recover(clp
);
332 exception
->retry
= 1;
337 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
339 spin_lock(&clp
->cl_lock
);
340 if (time_before(clp
->cl_last_renewal
,timestamp
))
341 clp
->cl_last_renewal
= timestamp
;
342 spin_unlock(&clp
->cl_lock
);
345 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
347 do_renew_lease(server
->nfs_client
, timestamp
);
350 #if defined(CONFIG_NFS_V4_1)
353 * nfs4_free_slot - free a slot and efficiently update slot table.
355 * freeing a slot is trivially done by clearing its respective bit
357 * If the freed slotid equals highest_used_slotid we want to update it
358 * so that the server would be able to size down the slot table if needed,
359 * otherwise we know that the highest_used_slotid is still in use.
360 * When updating highest_used_slotid there may be "holes" in the bitmap
361 * so we need to scan down from highest_used_slotid to 0 looking for the now
362 * highest slotid in use.
363 * If none found, highest_used_slotid is set to -1.
365 * Must be called while holding tbl->slot_tbl_lock
368 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u8 free_slotid
)
370 int slotid
= free_slotid
;
372 BUG_ON(slotid
< 0 || slotid
>= NFS4_MAX_SLOT_TABLE
);
373 /* clear used bit in bitmap */
374 __clear_bit(slotid
, tbl
->used_slots
);
376 /* update highest_used_slotid when it is freed */
377 if (slotid
== tbl
->highest_used_slotid
) {
378 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
379 if (slotid
< tbl
->max_slots
)
380 tbl
->highest_used_slotid
= slotid
;
382 tbl
->highest_used_slotid
= -1;
384 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
385 free_slotid
, tbl
->highest_used_slotid
);
388 bool nfs4_set_task_privileged(struct rpc_task
*task
, void *dummy
)
390 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
395 * Signal state manager thread if session fore channel is drained
397 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
399 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
400 rpc_wake_up_first(&ses
->fc_slot_table
.slot_tbl_waitq
,
401 nfs4_set_task_privileged
, NULL
);
405 if (ses
->fc_slot_table
.highest_used_slotid
!= -1)
408 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
409 complete(&ses
->fc_slot_table
.complete
);
413 * Signal state manager thread if session back channel is drained
415 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
417 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
418 ses
->bc_slot_table
.highest_used_slotid
!= -1)
420 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
421 complete(&ses
->bc_slot_table
.complete
);
424 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
426 struct nfs4_slot_table
*tbl
;
428 tbl
= &res
->sr_session
->fc_slot_table
;
430 /* just wake up the next guy waiting since
431 * we may have not consumed a slot after all */
432 dprintk("%s: No slot\n", __func__
);
436 spin_lock(&tbl
->slot_tbl_lock
);
437 nfs4_free_slot(tbl
, res
->sr_slot
- tbl
->slots
);
438 nfs4_check_drain_fc_complete(res
->sr_session
);
439 spin_unlock(&tbl
->slot_tbl_lock
);
443 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
445 unsigned long timestamp
;
446 struct nfs_client
*clp
;
449 * sr_status remains 1 if an RPC level error occurred. The server
450 * may or may not have processed the sequence operation..
451 * Proceed as if the server received and processed the sequence
454 if (res
->sr_status
== 1)
455 res
->sr_status
= NFS_OK
;
457 /* don't increment the sequence number if the task wasn't sent */
458 if (!RPC_WAS_SENT(task
))
461 /* Check the SEQUENCE operation status */
462 switch (res
->sr_status
) {
464 /* Update the slot's sequence and clientid lease timer */
465 ++res
->sr_slot
->seq_nr
;
466 timestamp
= res
->sr_renewal_time
;
467 clp
= res
->sr_session
->clp
;
468 do_renew_lease(clp
, timestamp
);
469 /* Check sequence flags */
470 if (res
->sr_status_flags
!= 0)
471 nfs4_schedule_lease_recovery(clp
);
474 /* The server detected a resend of the RPC call and
475 * returned NFS4ERR_DELAY as per Section 2.10.6.2
478 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
480 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
481 res
->sr_slot
->seq_nr
);
484 /* Just update the slot sequence no. */
485 ++res
->sr_slot
->seq_nr
;
488 /* The session may be reset by one of the error handlers. */
489 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
490 nfs41_sequence_free_slot(res
);
493 if (!rpc_restart_call(task
))
495 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
499 static int nfs4_sequence_done(struct rpc_task
*task
,
500 struct nfs4_sequence_res
*res
)
502 if (res
->sr_session
== NULL
)
504 return nfs41_sequence_done(task
, res
);
508 * nfs4_find_slot - efficiently look for a free slot
510 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
511 * If found, we mark the slot as used, update the highest_used_slotid,
512 * and respectively set up the sequence operation args.
513 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
515 * Note: must be called with under the slot_tbl_lock.
518 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
521 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
522 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
524 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
525 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
527 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
528 if (slotid
>= tbl
->max_slots
)
530 __set_bit(slotid
, tbl
->used_slots
);
531 if (slotid
> tbl
->highest_used_slotid
)
532 tbl
->highest_used_slotid
= slotid
;
535 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
536 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
540 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
541 struct nfs4_sequence_res
*res
, int cache_reply
)
543 args
->sa_session
= NULL
;
544 args
->sa_cache_this
= 0;
546 args
->sa_cache_this
= 1;
547 res
->sr_session
= NULL
;
551 int nfs41_setup_sequence(struct nfs4_session
*session
,
552 struct nfs4_sequence_args
*args
,
553 struct nfs4_sequence_res
*res
,
554 struct rpc_task
*task
)
556 struct nfs4_slot
*slot
;
557 struct nfs4_slot_table
*tbl
;
560 dprintk("--> %s\n", __func__
);
561 /* slot already allocated? */
562 if (res
->sr_slot
!= NULL
)
565 tbl
= &session
->fc_slot_table
;
567 spin_lock(&tbl
->slot_tbl_lock
);
568 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
569 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
570 /* The state manager will wait until the slot table is empty */
571 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
572 spin_unlock(&tbl
->slot_tbl_lock
);
573 dprintk("%s session is draining\n", __func__
);
577 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
578 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
579 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
580 spin_unlock(&tbl
->slot_tbl_lock
);
581 dprintk("%s enforce FIFO order\n", __func__
);
585 slotid
= nfs4_find_slot(tbl
);
586 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
587 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
588 spin_unlock(&tbl
->slot_tbl_lock
);
589 dprintk("<-- %s: no free slots\n", __func__
);
592 spin_unlock(&tbl
->slot_tbl_lock
);
594 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
595 slot
= tbl
->slots
+ slotid
;
596 args
->sa_session
= session
;
597 args
->sa_slotid
= slotid
;
599 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
601 res
->sr_session
= session
;
603 res
->sr_renewal_time
= jiffies
;
604 res
->sr_status_flags
= 0;
606 * sr_status is only set in decode_sequence, and so will remain
607 * set to 1 if an rpc level failure occurs.
612 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
614 int nfs4_setup_sequence(const struct nfs_server
*server
,
615 struct nfs4_sequence_args
*args
,
616 struct nfs4_sequence_res
*res
,
617 struct rpc_task
*task
)
619 struct nfs4_session
*session
= nfs4_get_session(server
);
625 dprintk("--> %s clp %p session %p sr_slot %td\n",
626 __func__
, session
->clp
, session
, res
->sr_slot
?
627 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
629 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
631 dprintk("<-- %s status=%d\n", __func__
, ret
);
635 struct nfs41_call_sync_data
{
636 const struct nfs_server
*seq_server
;
637 struct nfs4_sequence_args
*seq_args
;
638 struct nfs4_sequence_res
*seq_res
;
641 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
643 struct nfs41_call_sync_data
*data
= calldata
;
645 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
647 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
648 data
->seq_res
, task
))
650 rpc_call_start(task
);
653 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
655 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
656 nfs41_call_sync_prepare(task
, calldata
);
659 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
661 struct nfs41_call_sync_data
*data
= calldata
;
663 nfs41_sequence_done(task
, data
->seq_res
);
666 struct rpc_call_ops nfs41_call_sync_ops
= {
667 .rpc_call_prepare
= nfs41_call_sync_prepare
,
668 .rpc_call_done
= nfs41_call_sync_done
,
671 struct rpc_call_ops nfs41_call_priv_sync_ops
= {
672 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
673 .rpc_call_done
= nfs41_call_sync_done
,
676 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
677 struct nfs_server
*server
,
678 struct rpc_message
*msg
,
679 struct nfs4_sequence_args
*args
,
680 struct nfs4_sequence_res
*res
,
684 struct rpc_task
*task
;
685 struct nfs41_call_sync_data data
= {
686 .seq_server
= server
,
690 struct rpc_task_setup task_setup
= {
693 .callback_ops
= &nfs41_call_sync_ops
,
694 .callback_data
= &data
698 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
699 task
= rpc_run_task(&task_setup
);
703 ret
= task
->tk_status
;
709 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
710 struct nfs_server
*server
,
711 struct rpc_message
*msg
,
712 struct nfs4_sequence_args
*args
,
713 struct nfs4_sequence_res
*res
,
716 nfs41_init_sequence(args
, res
, cache_reply
);
717 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, 0);
722 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
723 struct nfs4_sequence_res
*res
, int cache_reply
)
727 static int nfs4_sequence_done(struct rpc_task
*task
,
728 struct nfs4_sequence_res
*res
)
732 #endif /* CONFIG_NFS_V4_1 */
734 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
735 struct nfs_server
*server
,
736 struct rpc_message
*msg
,
737 struct nfs4_sequence_args
*args
,
738 struct nfs4_sequence_res
*res
,
741 nfs41_init_sequence(args
, res
, cache_reply
);
742 return rpc_call_sync(clnt
, msg
, 0);
746 int nfs4_call_sync(struct rpc_clnt
*clnt
,
747 struct nfs_server
*server
,
748 struct rpc_message
*msg
,
749 struct nfs4_sequence_args
*args
,
750 struct nfs4_sequence_res
*res
,
753 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
754 args
, res
, cache_reply
);
757 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
759 struct nfs_inode
*nfsi
= NFS_I(dir
);
761 spin_lock(&dir
->i_lock
);
762 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
763 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
764 nfs_force_lookup_revalidate(dir
);
765 dir
->i_version
= cinfo
->after
;
766 spin_unlock(&dir
->i_lock
);
769 struct nfs4_opendata
{
771 struct nfs_openargs o_arg
;
772 struct nfs_openres o_res
;
773 struct nfs_open_confirmargs c_arg
;
774 struct nfs_open_confirmres c_res
;
775 struct nfs4_string owner_name
;
776 struct nfs4_string group_name
;
777 struct nfs_fattr f_attr
;
778 struct nfs_fattr dir_attr
;
780 struct dentry
*dentry
;
781 struct nfs4_state_owner
*owner
;
782 struct nfs4_state
*state
;
784 unsigned long timestamp
;
785 unsigned int rpc_done
: 1;
791 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
793 p
->o_res
.f_attr
= &p
->f_attr
;
794 p
->o_res
.dir_attr
= &p
->dir_attr
;
795 p
->o_res
.seqid
= p
->o_arg
.seqid
;
796 p
->c_res
.seqid
= p
->c_arg
.seqid
;
797 p
->o_res
.server
= p
->o_arg
.server
;
798 nfs_fattr_init(&p
->f_attr
);
799 nfs_fattr_init(&p
->dir_attr
);
800 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
803 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
804 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
805 const struct iattr
*attrs
,
808 struct dentry
*parent
= dget_parent(dentry
);
809 struct inode
*dir
= parent
->d_inode
;
810 struct nfs_server
*server
= NFS_SERVER(dir
);
811 struct nfs4_opendata
*p
;
813 p
= kzalloc(sizeof(*p
), gfp_mask
);
816 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
817 if (p
->o_arg
.seqid
== NULL
)
819 nfs_sb_active(dentry
->d_sb
);
820 p
->dentry
= dget(dentry
);
823 atomic_inc(&sp
->so_count
);
824 p
->o_arg
.fh
= NFS_FH(dir
);
825 p
->o_arg
.open_flags
= flags
;
826 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
827 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
828 p
->o_arg
.id
= sp
->so_seqid
.owner_id
;
829 p
->o_arg
.name
= &dentry
->d_name
;
830 p
->o_arg
.server
= server
;
831 p
->o_arg
.bitmask
= server
->attr_bitmask
;
832 p
->o_arg
.dir_bitmask
= server
->cache_consistency_bitmask
;
833 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
834 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
837 p
->o_arg
.u
.attrs
= &p
->attrs
;
838 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
839 s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
843 p
->c_arg
.fh
= &p
->o_res
.fh
;
844 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
845 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
846 nfs4_init_opendata_res(p
);
856 static void nfs4_opendata_free(struct kref
*kref
)
858 struct nfs4_opendata
*p
= container_of(kref
,
859 struct nfs4_opendata
, kref
);
860 struct super_block
*sb
= p
->dentry
->d_sb
;
862 nfs_free_seqid(p
->o_arg
.seqid
);
863 if (p
->state
!= NULL
)
864 nfs4_put_open_state(p
->state
);
865 nfs4_put_state_owner(p
->owner
);
869 nfs_fattr_free_names(&p
->f_attr
);
873 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
876 kref_put(&p
->kref
, nfs4_opendata_free
);
879 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
883 ret
= rpc_wait_for_completion_task(task
);
887 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
891 if (open_mode
& (O_EXCL
|O_TRUNC
))
893 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
895 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
896 && state
->n_rdonly
!= 0;
899 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
900 && state
->n_wronly
!= 0;
902 case FMODE_READ
|FMODE_WRITE
:
903 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
904 && state
->n_rdwr
!= 0;
910 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
912 if (delegation
== NULL
)
914 if ((delegation
->type
& fmode
) != fmode
)
916 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
918 nfs_mark_delegation_referenced(delegation
);
922 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
931 case FMODE_READ
|FMODE_WRITE
:
934 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
937 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
939 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
940 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
941 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
944 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
947 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
949 case FMODE_READ
|FMODE_WRITE
:
950 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
954 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
956 write_seqlock(&state
->seqlock
);
957 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
958 write_sequnlock(&state
->seqlock
);
961 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
964 * Protect the call to nfs4_state_set_mode_locked and
965 * serialise the stateid update
967 write_seqlock(&state
->seqlock
);
968 if (deleg_stateid
!= NULL
) {
969 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
970 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
972 if (open_stateid
!= NULL
)
973 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
974 write_sequnlock(&state
->seqlock
);
975 spin_lock(&state
->owner
->so_lock
);
976 update_open_stateflags(state
, fmode
);
977 spin_unlock(&state
->owner
->so_lock
);
980 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
982 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
983 struct nfs_delegation
*deleg_cur
;
986 fmode
&= (FMODE_READ
|FMODE_WRITE
);
989 deleg_cur
= rcu_dereference(nfsi
->delegation
);
990 if (deleg_cur
== NULL
)
993 spin_lock(&deleg_cur
->lock
);
994 if (nfsi
->delegation
!= deleg_cur
||
995 (deleg_cur
->type
& fmode
) != fmode
)
996 goto no_delegation_unlock
;
998 if (delegation
== NULL
)
999 delegation
= &deleg_cur
->stateid
;
1000 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
1001 goto no_delegation_unlock
;
1003 nfs_mark_delegation_referenced(deleg_cur
);
1004 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1006 no_delegation_unlock
:
1007 spin_unlock(&deleg_cur
->lock
);
1011 if (!ret
&& open_stateid
!= NULL
) {
1012 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1020 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1022 struct nfs_delegation
*delegation
;
1025 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1026 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1031 nfs_inode_return_delegation(inode
);
1034 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1036 struct nfs4_state
*state
= opendata
->state
;
1037 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1038 struct nfs_delegation
*delegation
;
1039 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1040 fmode_t fmode
= opendata
->o_arg
.fmode
;
1041 nfs4_stateid stateid
;
1045 if (can_open_cached(state
, fmode
, open_mode
)) {
1046 spin_lock(&state
->owner
->so_lock
);
1047 if (can_open_cached(state
, fmode
, open_mode
)) {
1048 update_open_stateflags(state
, fmode
);
1049 spin_unlock(&state
->owner
->so_lock
);
1050 goto out_return_state
;
1052 spin_unlock(&state
->owner
->so_lock
);
1055 delegation
= rcu_dereference(nfsi
->delegation
);
1056 if (!can_open_delegated(delegation
, fmode
)) {
1060 /* Save the delegation */
1061 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
1063 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1068 /* Try to update the stateid using the delegation */
1069 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1070 goto out_return_state
;
1073 return ERR_PTR(ret
);
1075 atomic_inc(&state
->count
);
1079 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1081 struct inode
*inode
;
1082 struct nfs4_state
*state
= NULL
;
1083 struct nfs_delegation
*delegation
;
1086 if (!data
->rpc_done
) {
1087 state
= nfs4_try_open_cached(data
);
1092 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1094 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1095 ret
= PTR_ERR(inode
);
1099 state
= nfs4_get_open_state(inode
, data
->owner
);
1102 if (data
->o_res
.delegation_type
!= 0) {
1103 int delegation_flags
= 0;
1106 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1108 delegation_flags
= delegation
->flags
;
1110 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1111 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1112 "returning a delegation for "
1113 "OPEN(CLAIM_DELEGATE_CUR)\n",
1114 NFS_CLIENT(inode
)->cl_server
);
1115 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1116 nfs_inode_set_delegation(state
->inode
,
1117 data
->owner
->so_cred
,
1120 nfs_inode_reclaim_delegation(state
->inode
,
1121 data
->owner
->so_cred
,
1125 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1133 return ERR_PTR(ret
);
1136 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1138 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1139 struct nfs_open_context
*ctx
;
1141 spin_lock(&state
->inode
->i_lock
);
1142 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1143 if (ctx
->state
!= state
)
1145 get_nfs_open_context(ctx
);
1146 spin_unlock(&state
->inode
->i_lock
);
1149 spin_unlock(&state
->inode
->i_lock
);
1150 return ERR_PTR(-ENOENT
);
1153 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1155 struct nfs4_opendata
*opendata
;
1157 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1158 if (opendata
== NULL
)
1159 return ERR_PTR(-ENOMEM
);
1160 opendata
->state
= state
;
1161 atomic_inc(&state
->count
);
1165 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1167 struct nfs4_state
*newstate
;
1170 opendata
->o_arg
.open_flags
= 0;
1171 opendata
->o_arg
.fmode
= fmode
;
1172 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1173 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1174 nfs4_init_opendata_res(opendata
);
1175 ret
= _nfs4_recover_proc_open(opendata
);
1178 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1179 if (IS_ERR(newstate
))
1180 return PTR_ERR(newstate
);
1181 nfs4_close_state(newstate
, fmode
);
1186 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1188 struct nfs4_state
*newstate
;
1191 /* memory barrier prior to reading state->n_* */
1192 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1194 if (state
->n_rdwr
!= 0) {
1195 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1196 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1199 if (newstate
!= state
)
1202 if (state
->n_wronly
!= 0) {
1203 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1204 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1207 if (newstate
!= state
)
1210 if (state
->n_rdonly
!= 0) {
1211 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1212 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1215 if (newstate
!= state
)
1219 * We may have performed cached opens for all three recoveries.
1220 * Check if we need to update the current stateid.
1222 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1223 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1224 write_seqlock(&state
->seqlock
);
1225 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1226 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1227 write_sequnlock(&state
->seqlock
);
1234 * reclaim state on the server after a reboot.
1236 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1238 struct nfs_delegation
*delegation
;
1239 struct nfs4_opendata
*opendata
;
1240 fmode_t delegation_type
= 0;
1243 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1244 if (IS_ERR(opendata
))
1245 return PTR_ERR(opendata
);
1246 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1247 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1249 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1250 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1251 delegation_type
= delegation
->type
;
1253 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1254 status
= nfs4_open_recover(opendata
, state
);
1255 nfs4_opendata_put(opendata
);
1259 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1261 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1262 struct nfs4_exception exception
= { };
1265 err
= _nfs4_do_open_reclaim(ctx
, state
);
1266 if (err
!= -NFS4ERR_DELAY
)
1268 nfs4_handle_exception(server
, err
, &exception
);
1269 } while (exception
.retry
);
1273 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1275 struct nfs_open_context
*ctx
;
1278 ctx
= nfs4_state_find_open_context(state
);
1280 return PTR_ERR(ctx
);
1281 ret
= nfs4_do_open_reclaim(ctx
, state
);
1282 put_nfs_open_context(ctx
);
1286 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1288 struct nfs4_opendata
*opendata
;
1291 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1292 if (IS_ERR(opendata
))
1293 return PTR_ERR(opendata
);
1294 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1295 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1296 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1297 ret
= nfs4_open_recover(opendata
, state
);
1298 nfs4_opendata_put(opendata
);
1302 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1304 struct nfs4_exception exception
= { };
1305 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1308 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1314 case -NFS4ERR_BADSESSION
:
1315 case -NFS4ERR_BADSLOT
:
1316 case -NFS4ERR_BAD_HIGH_SLOT
:
1317 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1318 case -NFS4ERR_DEADSESSION
:
1319 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
1321 case -NFS4ERR_STALE_CLIENTID
:
1322 case -NFS4ERR_STALE_STATEID
:
1323 case -NFS4ERR_EXPIRED
:
1324 /* Don't recall a delegation if it was lost */
1325 nfs4_schedule_lease_recovery(server
->nfs_client
);
1329 * The show must go on: exit, but mark the
1330 * stateid as needing recovery.
1332 case -NFS4ERR_ADMIN_REVOKED
:
1333 case -NFS4ERR_BAD_STATEID
:
1334 nfs4_schedule_stateid_recovery(server
, state
);
1337 * User RPCSEC_GSS context has expired.
1338 * We cannot recover this stateid now, so
1339 * skip it and allow recovery thread to
1346 err
= nfs4_handle_exception(server
, err
, &exception
);
1347 } while (exception
.retry
);
1352 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1354 struct nfs4_opendata
*data
= calldata
;
1356 data
->rpc_status
= task
->tk_status
;
1357 if (data
->rpc_status
== 0) {
1358 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1359 sizeof(data
->o_res
.stateid
.data
));
1360 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1361 renew_lease(data
->o_res
.server
, data
->timestamp
);
1366 static void nfs4_open_confirm_release(void *calldata
)
1368 struct nfs4_opendata
*data
= calldata
;
1369 struct nfs4_state
*state
= NULL
;
1371 /* If this request hasn't been cancelled, do nothing */
1372 if (data
->cancelled
== 0)
1374 /* In case of error, no cleanup! */
1375 if (!data
->rpc_done
)
1377 state
= nfs4_opendata_to_nfs4_state(data
);
1379 nfs4_close_state(state
, data
->o_arg
.fmode
);
1381 nfs4_opendata_put(data
);
1384 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1385 .rpc_call_done
= nfs4_open_confirm_done
,
1386 .rpc_release
= nfs4_open_confirm_release
,
1390 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1392 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1394 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1395 struct rpc_task
*task
;
1396 struct rpc_message msg
= {
1397 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1398 .rpc_argp
= &data
->c_arg
,
1399 .rpc_resp
= &data
->c_res
,
1400 .rpc_cred
= data
->owner
->so_cred
,
1402 struct rpc_task_setup task_setup_data
= {
1403 .rpc_client
= server
->client
,
1404 .rpc_message
= &msg
,
1405 .callback_ops
= &nfs4_open_confirm_ops
,
1406 .callback_data
= data
,
1407 .workqueue
= nfsiod_workqueue
,
1408 .flags
= RPC_TASK_ASYNC
,
1412 kref_get(&data
->kref
);
1414 data
->rpc_status
= 0;
1415 data
->timestamp
= jiffies
;
1416 task
= rpc_run_task(&task_setup_data
);
1418 return PTR_ERR(task
);
1419 status
= nfs4_wait_for_completion_rpc_task(task
);
1421 data
->cancelled
= 1;
1424 status
= data
->rpc_status
;
1429 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1431 struct nfs4_opendata
*data
= calldata
;
1432 struct nfs4_state_owner
*sp
= data
->owner
;
1434 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1437 * Check if we still need to send an OPEN call, or if we can use
1438 * a delegation instead.
1440 if (data
->state
!= NULL
) {
1441 struct nfs_delegation
*delegation
;
1443 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1446 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1447 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1448 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1449 goto unlock_no_action
;
1452 /* Update sequence id. */
1453 data
->o_arg
.id
= sp
->so_seqid
.owner_id
;
1454 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1455 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1456 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1457 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1459 data
->timestamp
= jiffies
;
1460 if (nfs4_setup_sequence(data
->o_arg
.server
,
1461 &data
->o_arg
.seq_args
,
1462 &data
->o_res
.seq_res
, task
))
1464 rpc_call_start(task
);
1469 task
->tk_action
= NULL
;
1473 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1475 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1476 nfs4_open_prepare(task
, calldata
);
1479 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1481 struct nfs4_opendata
*data
= calldata
;
1483 data
->rpc_status
= task
->tk_status
;
1485 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1488 if (task
->tk_status
== 0) {
1489 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1493 data
->rpc_status
= -ELOOP
;
1496 data
->rpc_status
= -EISDIR
;
1499 data
->rpc_status
= -ENOTDIR
;
1501 renew_lease(data
->o_res
.server
, data
->timestamp
);
1502 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1503 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1508 static void nfs4_open_release(void *calldata
)
1510 struct nfs4_opendata
*data
= calldata
;
1511 struct nfs4_state
*state
= NULL
;
1513 /* If this request hasn't been cancelled, do nothing */
1514 if (data
->cancelled
== 0)
1516 /* In case of error, no cleanup! */
1517 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1519 /* In case we need an open_confirm, no cleanup! */
1520 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1522 state
= nfs4_opendata_to_nfs4_state(data
);
1524 nfs4_close_state(state
, data
->o_arg
.fmode
);
1526 nfs4_opendata_put(data
);
1529 static const struct rpc_call_ops nfs4_open_ops
= {
1530 .rpc_call_prepare
= nfs4_open_prepare
,
1531 .rpc_call_done
= nfs4_open_done
,
1532 .rpc_release
= nfs4_open_release
,
1535 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1536 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1537 .rpc_call_done
= nfs4_open_done
,
1538 .rpc_release
= nfs4_open_release
,
1541 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1543 struct inode
*dir
= data
->dir
->d_inode
;
1544 struct nfs_server
*server
= NFS_SERVER(dir
);
1545 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1546 struct nfs_openres
*o_res
= &data
->o_res
;
1547 struct rpc_task
*task
;
1548 struct rpc_message msg
= {
1549 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1552 .rpc_cred
= data
->owner
->so_cred
,
1554 struct rpc_task_setup task_setup_data
= {
1555 .rpc_client
= server
->client
,
1556 .rpc_message
= &msg
,
1557 .callback_ops
= &nfs4_open_ops
,
1558 .callback_data
= data
,
1559 .workqueue
= nfsiod_workqueue
,
1560 .flags
= RPC_TASK_ASYNC
,
1564 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1565 kref_get(&data
->kref
);
1567 data
->rpc_status
= 0;
1568 data
->cancelled
= 0;
1570 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1571 task
= rpc_run_task(&task_setup_data
);
1573 return PTR_ERR(task
);
1574 status
= nfs4_wait_for_completion_rpc_task(task
);
1576 data
->cancelled
= 1;
1579 status
= data
->rpc_status
;
1585 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1587 struct inode
*dir
= data
->dir
->d_inode
;
1588 struct nfs_openres
*o_res
= &data
->o_res
;
1591 status
= nfs4_run_open_task(data
, 1);
1592 if (status
!= 0 || !data
->rpc_done
)
1595 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1597 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1599 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1600 status
= _nfs4_proc_open_confirm(data
);
1609 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1611 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1613 struct inode
*dir
= data
->dir
->d_inode
;
1614 struct nfs_server
*server
= NFS_SERVER(dir
);
1615 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1616 struct nfs_openres
*o_res
= &data
->o_res
;
1619 status
= nfs4_run_open_task(data
, 0);
1620 if (!data
->rpc_done
)
1623 if (status
== -NFS4ERR_BADNAME
&&
1624 !(o_arg
->open_flags
& O_CREAT
))
1629 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1631 if (o_arg
->open_flags
& O_CREAT
) {
1632 update_changeattr(dir
, &o_res
->cinfo
);
1633 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1635 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1636 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1637 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1638 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1639 status
= _nfs4_proc_open_confirm(data
);
1643 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1644 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1648 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1653 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1654 ret
= nfs4_wait_clnt_recover(clp
);
1657 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1658 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1660 nfs4_schedule_state_manager(clp
);
1666 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1668 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1673 * reclaim state on the server after a network partition.
1674 * Assumes caller holds the appropriate lock
1676 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1678 struct nfs4_opendata
*opendata
;
1681 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1682 if (IS_ERR(opendata
))
1683 return PTR_ERR(opendata
);
1684 ret
= nfs4_open_recover(opendata
, state
);
1686 d_drop(ctx
->dentry
);
1687 nfs4_opendata_put(opendata
);
1691 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1693 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1694 struct nfs4_exception exception
= { };
1698 err
= _nfs4_open_expired(ctx
, state
);
1702 case -NFS4ERR_GRACE
:
1703 case -NFS4ERR_DELAY
:
1704 nfs4_handle_exception(server
, err
, &exception
);
1707 } while (exception
.retry
);
1712 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1714 struct nfs_open_context
*ctx
;
1717 ctx
= nfs4_state_find_open_context(state
);
1719 return PTR_ERR(ctx
);
1720 ret
= nfs4_do_open_expired(ctx
, state
);
1721 put_nfs_open_context(ctx
);
1725 #if defined(CONFIG_NFS_V4_1)
1726 static int nfs41_check_expired_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, unsigned int flags
)
1728 int status
= NFS_OK
;
1729 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1731 if (state
->flags
& flags
) {
1732 status
= nfs41_test_stateid(server
, stateid
);
1733 if (status
!= NFS_OK
) {
1734 nfs41_free_stateid(server
, stateid
);
1735 state
->flags
&= ~flags
;
1741 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1743 int deleg_status
, open_status
;
1744 int deleg_flags
= 1 << NFS_DELEGATED_STATE
;
1745 int open_flags
= (1 << NFS_O_RDONLY_STATE
) | (1 << NFS_O_WRONLY_STATE
) | (1 << NFS_O_RDWR_STATE
);
1747 deleg_status
= nfs41_check_expired_stateid(state
, &state
->stateid
, deleg_flags
);
1748 open_status
= nfs41_check_expired_stateid(state
, &state
->open_stateid
, open_flags
);
1750 if ((deleg_status
== NFS_OK
) && (open_status
== NFS_OK
))
1752 return nfs4_open_expired(sp
, state
);
1757 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1758 * fields corresponding to attributes that were used to store the verifier.
1759 * Make sure we clobber those fields in the later setattr call
1761 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1763 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1764 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1765 sattr
->ia_valid
|= ATTR_ATIME
;
1767 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1768 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1769 sattr
->ia_valid
|= ATTR_MTIME
;
1773 * Returns a referenced nfs4_state
1775 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
)
1777 struct nfs4_state_owner
*sp
;
1778 struct nfs4_state
*state
= NULL
;
1779 struct nfs_server
*server
= NFS_SERVER(dir
);
1780 struct nfs4_opendata
*opendata
;
1783 /* Protect against reboot recovery conflicts */
1785 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1787 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1790 status
= nfs4_recover_expired_lease(server
);
1792 goto err_put_state_owner
;
1793 if (dentry
->d_inode
!= NULL
)
1794 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1796 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1797 if (opendata
== NULL
)
1798 goto err_put_state_owner
;
1800 if (dentry
->d_inode
!= NULL
)
1801 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1803 status
= _nfs4_proc_open(opendata
);
1805 goto err_opendata_put
;
1807 state
= nfs4_opendata_to_nfs4_state(opendata
);
1808 status
= PTR_ERR(state
);
1810 goto err_opendata_put
;
1811 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1812 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1814 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1815 nfs4_exclusive_attrset(opendata
, sattr
);
1817 nfs_fattr_init(opendata
->o_res
.f_attr
);
1818 status
= nfs4_do_setattr(state
->inode
, cred
,
1819 opendata
->o_res
.f_attr
, sattr
,
1822 nfs_setattr_update_inode(state
->inode
, sattr
);
1823 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1825 nfs4_opendata_put(opendata
);
1826 nfs4_put_state_owner(sp
);
1830 nfs4_opendata_put(opendata
);
1831 err_put_state_owner
:
1832 nfs4_put_state_owner(sp
);
1839 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
)
1841 struct nfs4_exception exception
= { };
1842 struct nfs4_state
*res
;
1846 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
, &res
);
1849 /* NOTE: BAD_SEQID means the server and client disagree about the
1850 * book-keeping w.r.t. state-changing operations
1851 * (OPEN/CLOSE/LOCK/LOCKU...)
1852 * It is actually a sign of a bug on the client or on the server.
1854 * If we receive a BAD_SEQID error in the particular case of
1855 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1856 * have unhashed the old state_owner for us, and that we can
1857 * therefore safely retry using a new one. We should still warn
1858 * the user though...
1860 if (status
== -NFS4ERR_BAD_SEQID
) {
1861 printk(KERN_WARNING
"NFS: v4 server %s "
1862 " returned a bad sequence-id error!\n",
1863 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1864 exception
.retry
= 1;
1868 * BAD_STATEID on OPEN means that the server cancelled our
1869 * state before it received the OPEN_CONFIRM.
1870 * Recover by retrying the request as per the discussion
1871 * on Page 181 of RFC3530.
1873 if (status
== -NFS4ERR_BAD_STATEID
) {
1874 exception
.retry
= 1;
1877 if (status
== -EAGAIN
) {
1878 /* We must have found a delegation */
1879 exception
.retry
= 1;
1882 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1883 status
, &exception
));
1884 } while (exception
.retry
);
1888 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1889 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1890 struct nfs4_state
*state
)
1892 struct nfs_server
*server
= NFS_SERVER(inode
);
1893 struct nfs_setattrargs arg
= {
1894 .fh
= NFS_FH(inode
),
1897 .bitmask
= server
->attr_bitmask
,
1899 struct nfs_setattrres res
= {
1903 struct rpc_message msg
= {
1904 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1909 unsigned long timestamp
= jiffies
;
1912 nfs_fattr_init(fattr
);
1914 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1915 /* Use that stateid */
1916 } else if (state
!= NULL
) {
1917 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
, current
->tgid
);
1919 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1921 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
1922 if (status
== 0 && state
!= NULL
)
1923 renew_lease(server
, timestamp
);
1927 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1928 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1929 struct nfs4_state
*state
)
1931 struct nfs_server
*server
= NFS_SERVER(inode
);
1932 struct nfs4_exception exception
= { };
1935 err
= nfs4_handle_exception(server
,
1936 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1938 } while (exception
.retry
);
1942 struct nfs4_closedata
{
1943 struct inode
*inode
;
1944 struct nfs4_state
*state
;
1945 struct nfs_closeargs arg
;
1946 struct nfs_closeres res
;
1947 struct nfs_fattr fattr
;
1948 unsigned long timestamp
;
1953 static void nfs4_free_closedata(void *data
)
1955 struct nfs4_closedata
*calldata
= data
;
1956 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1957 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
1960 pnfs_roc_release(calldata
->state
->inode
);
1961 nfs4_put_open_state(calldata
->state
);
1962 nfs_free_seqid(calldata
->arg
.seqid
);
1963 nfs4_put_state_owner(sp
);
1964 nfs_sb_deactive(sb
);
1968 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
1971 spin_lock(&state
->owner
->so_lock
);
1972 if (!(fmode
& FMODE_READ
))
1973 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1974 if (!(fmode
& FMODE_WRITE
))
1975 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1976 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1977 spin_unlock(&state
->owner
->so_lock
);
1980 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1982 struct nfs4_closedata
*calldata
= data
;
1983 struct nfs4_state
*state
= calldata
->state
;
1984 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1986 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
1988 /* hmm. we are done with the inode, and in the process of freeing
1989 * the state_owner. we keep this around to process errors
1991 switch (task
->tk_status
) {
1994 pnfs_roc_set_barrier(state
->inode
,
1995 calldata
->roc_barrier
);
1996 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1997 renew_lease(server
, calldata
->timestamp
);
1998 nfs4_close_clear_stateid_flags(state
,
1999 calldata
->arg
.fmode
);
2001 case -NFS4ERR_STALE_STATEID
:
2002 case -NFS4ERR_OLD_STATEID
:
2003 case -NFS4ERR_BAD_STATEID
:
2004 case -NFS4ERR_EXPIRED
:
2005 if (calldata
->arg
.fmode
== 0)
2008 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2009 rpc_restart_call_prepare(task
);
2011 nfs_release_seqid(calldata
->arg
.seqid
);
2012 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2015 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2017 struct nfs4_closedata
*calldata
= data
;
2018 struct nfs4_state
*state
= calldata
->state
;
2021 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2024 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2025 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2026 spin_lock(&state
->owner
->so_lock
);
2027 /* Calculate the change in open mode */
2028 if (state
->n_rdwr
== 0) {
2029 if (state
->n_rdonly
== 0) {
2030 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2031 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2032 calldata
->arg
.fmode
&= ~FMODE_READ
;
2034 if (state
->n_wronly
== 0) {
2035 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2036 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2037 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2040 spin_unlock(&state
->owner
->so_lock
);
2043 /* Note: exit _without_ calling nfs4_close_done */
2044 task
->tk_action
= NULL
;
2048 if (calldata
->arg
.fmode
== 0) {
2049 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2050 if (calldata
->roc
&&
2051 pnfs_roc_drain(calldata
->inode
, &calldata
->roc_barrier
)) {
2052 rpc_sleep_on(&NFS_SERVER(calldata
->inode
)->roc_rpcwaitq
,
2058 nfs_fattr_init(calldata
->res
.fattr
);
2059 calldata
->timestamp
= jiffies
;
2060 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
2061 &calldata
->arg
.seq_args
,
2062 &calldata
->res
.seq_res
,
2065 rpc_call_start(task
);
2068 static const struct rpc_call_ops nfs4_close_ops
= {
2069 .rpc_call_prepare
= nfs4_close_prepare
,
2070 .rpc_call_done
= nfs4_close_done
,
2071 .rpc_release
= nfs4_free_closedata
,
2075 * It is possible for data to be read/written from a mem-mapped file
2076 * after the sys_close call (which hits the vfs layer as a flush).
2077 * This means that we can't safely call nfsv4 close on a file until
2078 * the inode is cleared. This in turn means that we are not good
2079 * NFSv4 citizens - we do not indicate to the server to update the file's
2080 * share state even when we are done with one of the three share
2081 * stateid's in the inode.
2083 * NOTE: Caller must be holding the sp->so_owner semaphore!
2085 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
, bool roc
)
2087 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2088 struct nfs4_closedata
*calldata
;
2089 struct nfs4_state_owner
*sp
= state
->owner
;
2090 struct rpc_task
*task
;
2091 struct rpc_message msg
= {
2092 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2093 .rpc_cred
= state
->owner
->so_cred
,
2095 struct rpc_task_setup task_setup_data
= {
2096 .rpc_client
= server
->client
,
2097 .rpc_message
= &msg
,
2098 .callback_ops
= &nfs4_close_ops
,
2099 .workqueue
= nfsiod_workqueue
,
2100 .flags
= RPC_TASK_ASYNC
,
2102 int status
= -ENOMEM
;
2104 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2105 if (calldata
== NULL
)
2107 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2108 calldata
->inode
= state
->inode
;
2109 calldata
->state
= state
;
2110 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2111 calldata
->arg
.stateid
= &state
->open_stateid
;
2112 /* Serialization for the sequence id */
2113 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2114 if (calldata
->arg
.seqid
== NULL
)
2115 goto out_free_calldata
;
2116 calldata
->arg
.fmode
= 0;
2117 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2118 calldata
->res
.fattr
= &calldata
->fattr
;
2119 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2120 calldata
->res
.server
= server
;
2121 calldata
->roc
= roc
;
2122 nfs_sb_active(calldata
->inode
->i_sb
);
2124 msg
.rpc_argp
= &calldata
->arg
;
2125 msg
.rpc_resp
= &calldata
->res
;
2126 task_setup_data
.callback_data
= calldata
;
2127 task
= rpc_run_task(&task_setup_data
);
2129 return PTR_ERR(task
);
2132 status
= rpc_wait_for_completion_task(task
);
2139 pnfs_roc_release(state
->inode
);
2140 nfs4_put_open_state(state
);
2141 nfs4_put_state_owner(sp
);
2145 static struct inode
*
2146 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2148 struct nfs4_state
*state
;
2150 /* Protect against concurrent sillydeletes */
2151 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
, ctx
->cred
);
2153 return ERR_CAST(state
);
2155 return igrab(state
->inode
);
2158 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2160 if (ctx
->state
== NULL
)
2163 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2165 nfs4_close_state(ctx
->state
, ctx
->mode
);
2168 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2170 struct nfs4_server_caps_arg args
= {
2173 struct nfs4_server_caps_res res
= {};
2174 struct rpc_message msg
= {
2175 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2181 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2183 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2184 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2185 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2186 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2187 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2188 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2189 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2190 server
->caps
|= NFS_CAP_ACLS
;
2191 if (res
.has_links
!= 0)
2192 server
->caps
|= NFS_CAP_HARDLINKS
;
2193 if (res
.has_symlinks
!= 0)
2194 server
->caps
|= NFS_CAP_SYMLINKS
;
2195 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2196 server
->caps
|= NFS_CAP_FILEID
;
2197 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2198 server
->caps
|= NFS_CAP_MODE
;
2199 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2200 server
->caps
|= NFS_CAP_NLINK
;
2201 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2202 server
->caps
|= NFS_CAP_OWNER
;
2203 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2204 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2205 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2206 server
->caps
|= NFS_CAP_ATIME
;
2207 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2208 server
->caps
|= NFS_CAP_CTIME
;
2209 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2210 server
->caps
|= NFS_CAP_MTIME
;
2212 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2213 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2214 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2215 server
->acl_bitmask
= res
.acl_bitmask
;
2221 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2223 struct nfs4_exception exception
= { };
2226 err
= nfs4_handle_exception(server
,
2227 _nfs4_server_capabilities(server
, fhandle
),
2229 } while (exception
.retry
);
2233 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2234 struct nfs_fsinfo
*info
)
2236 struct nfs4_lookup_root_arg args
= {
2237 .bitmask
= nfs4_fattr_bitmap
,
2239 struct nfs4_lookup_res res
= {
2241 .fattr
= info
->fattr
,
2244 struct rpc_message msg
= {
2245 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2250 nfs_fattr_init(info
->fattr
);
2251 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2254 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2255 struct nfs_fsinfo
*info
)
2257 struct nfs4_exception exception
= { };
2260 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2263 case -NFS4ERR_WRONGSEC
:
2266 err
= nfs4_handle_exception(server
, err
, &exception
);
2268 } while (exception
.retry
);
2272 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2273 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2275 struct rpc_auth
*auth
;
2278 auth
= rpcauth_create(flavor
, server
->client
);
2283 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2288 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2289 struct nfs_fsinfo
*info
)
2291 int i
, len
, status
= 0;
2292 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2294 len
= gss_mech_list_pseudoflavors(&flav_array
[0]);
2295 flav_array
[len
] = RPC_AUTH_NULL
;
2298 for (i
= 0; i
< len
; i
++) {
2299 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2300 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2305 * -EACCESS could mean that the user doesn't have correct permissions
2306 * to access the mount. It could also mean that we tried to mount
2307 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2308 * existing mount programs don't handle -EACCES very well so it should
2309 * be mapped to -EPERM instead.
2311 if (status
== -EACCES
)
2317 * get the file handle for the "/" directory on the server
2319 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2320 struct nfs_fsinfo
*info
)
2322 int minor_version
= server
->nfs_client
->cl_minorversion
;
2323 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2324 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2326 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2327 * by nfs4_map_errors() as this function exits.
2329 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2331 status
= nfs4_server_capabilities(server
, fhandle
);
2333 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2334 return nfs4_map_errors(status
);
2337 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
2339 * Get locations and (maybe) other attributes of a referral.
2340 * Note that we'll actually follow the referral later when
2341 * we detect fsid mismatch in inode revalidation
2343 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
,
2344 struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2346 int status
= -ENOMEM
;
2347 struct page
*page
= NULL
;
2348 struct nfs4_fs_locations
*locations
= NULL
;
2350 page
= alloc_page(GFP_KERNEL
);
2353 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2354 if (locations
== NULL
)
2357 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2360 /* Make sure server returned a different fsid for the referral */
2361 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2362 dprintk("%s: server did not return a different fsid for"
2363 " a referral at %s\n", __func__
, name
->name
);
2367 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2368 nfs_fixup_referral_attributes(&locations
->fattr
);
2370 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2371 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2372 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2380 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2382 struct nfs4_getattr_arg args
= {
2384 .bitmask
= server
->attr_bitmask
,
2386 struct nfs4_getattr_res res
= {
2390 struct rpc_message msg
= {
2391 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2396 nfs_fattr_init(fattr
);
2397 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2400 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2402 struct nfs4_exception exception
= { };
2405 err
= nfs4_handle_exception(server
,
2406 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2408 } while (exception
.retry
);
2413 * The file is not closed if it is opened due to the a request to change
2414 * the size of the file. The open call will not be needed once the
2415 * VFS layer lookup-intents are implemented.
2417 * Close is called when the inode is destroyed.
2418 * If we haven't opened the file for O_WRONLY, we
2419 * need to in the size_change case to obtain a stateid.
2422 * Because OPEN is always done by name in nfsv4, it is
2423 * possible that we opened a different file by the same
2424 * name. We can recognize this race condition, but we
2425 * can't do anything about it besides returning an error.
2427 * This will be fixed with VFS changes (lookup-intent).
2430 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2431 struct iattr
*sattr
)
2433 struct inode
*inode
= dentry
->d_inode
;
2434 struct rpc_cred
*cred
= NULL
;
2435 struct nfs4_state
*state
= NULL
;
2438 if (pnfs_ld_layoutret_on_setattr(inode
))
2439 pnfs_return_layout(inode
);
2441 nfs_fattr_init(fattr
);
2443 /* Search for an existing open(O_WRITE) file */
2444 if (sattr
->ia_valid
& ATTR_FILE
) {
2445 struct nfs_open_context
*ctx
;
2447 ctx
= nfs_file_open_context(sattr
->ia_file
);
2454 /* Deal with open(O_TRUNC) */
2455 if (sattr
->ia_valid
& ATTR_OPEN
)
2456 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2458 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2460 nfs_setattr_update_inode(inode
, sattr
);
2464 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2465 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2466 struct nfs_fattr
*fattr
)
2468 struct nfs_server
*server
= NFS_SERVER(dir
);
2470 struct nfs4_lookup_arg args
= {
2471 .bitmask
= server
->attr_bitmask
,
2472 .dir_fh
= NFS_FH(dir
),
2475 struct nfs4_lookup_res res
= {
2480 struct rpc_message msg
= {
2481 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2486 nfs_fattr_init(fattr
);
2488 dprintk("NFS call lookup %s\n", name
->name
);
2489 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2490 dprintk("NFS reply lookup: %d\n", status
);
2494 void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
, struct nfs_fh
*fh
)
2496 memset(fh
, 0, sizeof(struct nfs_fh
));
2497 fattr
->fsid
.major
= 1;
2498 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2499 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_FSID
| NFS_ATTR_FATTR_MOUNTPOINT
;
2500 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2504 static int nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
, struct qstr
*name
,
2505 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2507 struct nfs4_exception exception
= { };
2512 status
= _nfs4_proc_lookup(clnt
, dir
, name
, fhandle
, fattr
);
2514 case -NFS4ERR_BADNAME
:
2516 case -NFS4ERR_MOVED
:
2517 return nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2518 case -NFS4ERR_WRONGSEC
:
2519 nfs_fixup_secinfo_attributes(fattr
, fhandle
);
2521 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2522 status
, &exception
);
2523 } while (exception
.retry
);
2527 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2529 struct nfs_server
*server
= NFS_SERVER(inode
);
2530 struct nfs4_accessargs args
= {
2531 .fh
= NFS_FH(inode
),
2532 .bitmask
= server
->cache_consistency_bitmask
,
2534 struct nfs4_accessres res
= {
2537 struct rpc_message msg
= {
2538 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2541 .rpc_cred
= entry
->cred
,
2543 int mode
= entry
->mask
;
2547 * Determine which access bits we want to ask for...
2549 if (mode
& MAY_READ
)
2550 args
.access
|= NFS4_ACCESS_READ
;
2551 if (S_ISDIR(inode
->i_mode
)) {
2552 if (mode
& MAY_WRITE
)
2553 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2554 if (mode
& MAY_EXEC
)
2555 args
.access
|= NFS4_ACCESS_LOOKUP
;
2557 if (mode
& MAY_WRITE
)
2558 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2559 if (mode
& MAY_EXEC
)
2560 args
.access
|= NFS4_ACCESS_EXECUTE
;
2563 res
.fattr
= nfs_alloc_fattr();
2564 if (res
.fattr
== NULL
)
2567 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2570 if (res
.access
& NFS4_ACCESS_READ
)
2571 entry
->mask
|= MAY_READ
;
2572 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2573 entry
->mask
|= MAY_WRITE
;
2574 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2575 entry
->mask
|= MAY_EXEC
;
2576 nfs_refresh_inode(inode
, res
.fattr
);
2578 nfs_free_fattr(res
.fattr
);
2582 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2584 struct nfs4_exception exception
= { };
2587 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2588 _nfs4_proc_access(inode
, entry
),
2590 } while (exception
.retry
);
2595 * TODO: For the time being, we don't try to get any attributes
2596 * along with any of the zero-copy operations READ, READDIR,
2599 * In the case of the first three, we want to put the GETATTR
2600 * after the read-type operation -- this is because it is hard
2601 * to predict the length of a GETATTR response in v4, and thus
2602 * align the READ data correctly. This means that the GETATTR
2603 * may end up partially falling into the page cache, and we should
2604 * shift it into the 'tail' of the xdr_buf before processing.
2605 * To do this efficiently, we need to know the total length
2606 * of data received, which doesn't seem to be available outside
2609 * In the case of WRITE, we also want to put the GETATTR after
2610 * the operation -- in this case because we want to make sure
2611 * we get the post-operation mtime and size. This means that
2612 * we can't use xdr_encode_pages() as written: we need a variant
2613 * of it which would leave room in the 'tail' iovec.
2615 * Both of these changes to the XDR layer would in fact be quite
2616 * minor, but I decided to leave them for a subsequent patch.
2618 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2619 unsigned int pgbase
, unsigned int pglen
)
2621 struct nfs4_readlink args
= {
2622 .fh
= NFS_FH(inode
),
2627 struct nfs4_readlink_res res
;
2628 struct rpc_message msg
= {
2629 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2634 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2637 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2638 unsigned int pgbase
, unsigned int pglen
)
2640 struct nfs4_exception exception
= { };
2643 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2644 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2646 } while (exception
.retry
);
2652 * We will need to arrange for the VFS layer to provide an atomic open.
2653 * Until then, this create/open method is prone to inefficiency and race
2654 * conditions due to the lookup, create, and open VFS calls from sys_open()
2655 * placed on the wire.
2657 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2658 * The file will be opened again in the subsequent VFS open call
2659 * (nfs4_proc_file_open).
2661 * The open for read will just hang around to be used by any process that
2662 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2666 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2667 int flags
, struct nfs_open_context
*ctx
)
2669 struct dentry
*de
= dentry
;
2670 struct nfs4_state
*state
;
2671 struct rpc_cred
*cred
= NULL
;
2680 sattr
->ia_mode
&= ~current_umask();
2681 state
= nfs4_do_open(dir
, de
, fmode
, flags
, sattr
, cred
);
2683 if (IS_ERR(state
)) {
2684 status
= PTR_ERR(state
);
2687 d_add(dentry
, igrab(state
->inode
));
2688 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2692 nfs4_close_sync(state
, fmode
);
2697 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2699 struct nfs_server
*server
= NFS_SERVER(dir
);
2700 struct nfs_removeargs args
= {
2702 .name
.len
= name
->len
,
2703 .name
.name
= name
->name
,
2704 .bitmask
= server
->attr_bitmask
,
2706 struct nfs_removeres res
= {
2709 struct rpc_message msg
= {
2710 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2714 int status
= -ENOMEM
;
2716 res
.dir_attr
= nfs_alloc_fattr();
2717 if (res
.dir_attr
== NULL
)
2720 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2722 update_changeattr(dir
, &res
.cinfo
);
2723 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2725 nfs_free_fattr(res
.dir_attr
);
2730 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2732 struct nfs4_exception exception
= { };
2735 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2736 _nfs4_proc_remove(dir
, name
),
2738 } while (exception
.retry
);
2742 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2744 struct nfs_server
*server
= NFS_SERVER(dir
);
2745 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2746 struct nfs_removeres
*res
= msg
->rpc_resp
;
2748 args
->bitmask
= server
->cache_consistency_bitmask
;
2749 res
->server
= server
;
2750 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2751 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
2754 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2756 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2758 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2760 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2762 update_changeattr(dir
, &res
->cinfo
);
2763 nfs_post_op_update_inode(dir
, res
->dir_attr
);
2767 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2769 struct nfs_server
*server
= NFS_SERVER(dir
);
2770 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2771 struct nfs_renameres
*res
= msg
->rpc_resp
;
2773 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2774 arg
->bitmask
= server
->attr_bitmask
;
2775 res
->server
= server
;
2776 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
2779 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2780 struct inode
*new_dir
)
2782 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2784 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2786 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2789 update_changeattr(old_dir
, &res
->old_cinfo
);
2790 nfs_post_op_update_inode(old_dir
, res
->old_fattr
);
2791 update_changeattr(new_dir
, &res
->new_cinfo
);
2792 nfs_post_op_update_inode(new_dir
, res
->new_fattr
);
2796 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2797 struct inode
*new_dir
, struct qstr
*new_name
)
2799 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2800 struct nfs_renameargs arg
= {
2801 .old_dir
= NFS_FH(old_dir
),
2802 .new_dir
= NFS_FH(new_dir
),
2803 .old_name
= old_name
,
2804 .new_name
= new_name
,
2805 .bitmask
= server
->attr_bitmask
,
2807 struct nfs_renameres res
= {
2810 struct rpc_message msg
= {
2811 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2815 int status
= -ENOMEM
;
2817 res
.old_fattr
= nfs_alloc_fattr();
2818 res
.new_fattr
= nfs_alloc_fattr();
2819 if (res
.old_fattr
== NULL
|| res
.new_fattr
== NULL
)
2822 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2824 update_changeattr(old_dir
, &res
.old_cinfo
);
2825 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2826 update_changeattr(new_dir
, &res
.new_cinfo
);
2827 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2830 nfs_free_fattr(res
.new_fattr
);
2831 nfs_free_fattr(res
.old_fattr
);
2835 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2836 struct inode
*new_dir
, struct qstr
*new_name
)
2838 struct nfs4_exception exception
= { };
2841 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2842 _nfs4_proc_rename(old_dir
, old_name
,
2845 } while (exception
.retry
);
2849 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2851 struct nfs_server
*server
= NFS_SERVER(inode
);
2852 struct nfs4_link_arg arg
= {
2853 .fh
= NFS_FH(inode
),
2854 .dir_fh
= NFS_FH(dir
),
2856 .bitmask
= server
->attr_bitmask
,
2858 struct nfs4_link_res res
= {
2861 struct rpc_message msg
= {
2862 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2866 int status
= -ENOMEM
;
2868 res
.fattr
= nfs_alloc_fattr();
2869 res
.dir_attr
= nfs_alloc_fattr();
2870 if (res
.fattr
== NULL
|| res
.dir_attr
== NULL
)
2873 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2875 update_changeattr(dir
, &res
.cinfo
);
2876 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2877 nfs_post_op_update_inode(inode
, res
.fattr
);
2880 nfs_free_fattr(res
.dir_attr
);
2881 nfs_free_fattr(res
.fattr
);
2885 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2887 struct nfs4_exception exception
= { };
2890 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2891 _nfs4_proc_link(inode
, dir
, name
),
2893 } while (exception
.retry
);
2897 struct nfs4_createdata
{
2898 struct rpc_message msg
;
2899 struct nfs4_create_arg arg
;
2900 struct nfs4_create_res res
;
2902 struct nfs_fattr fattr
;
2903 struct nfs_fattr dir_fattr
;
2906 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2907 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2909 struct nfs4_createdata
*data
;
2911 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2913 struct nfs_server
*server
= NFS_SERVER(dir
);
2915 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2916 data
->msg
.rpc_argp
= &data
->arg
;
2917 data
->msg
.rpc_resp
= &data
->res
;
2918 data
->arg
.dir_fh
= NFS_FH(dir
);
2919 data
->arg
.server
= server
;
2920 data
->arg
.name
= name
;
2921 data
->arg
.attrs
= sattr
;
2922 data
->arg
.ftype
= ftype
;
2923 data
->arg
.bitmask
= server
->attr_bitmask
;
2924 data
->res
.server
= server
;
2925 data
->res
.fh
= &data
->fh
;
2926 data
->res
.fattr
= &data
->fattr
;
2927 data
->res
.dir_fattr
= &data
->dir_fattr
;
2928 nfs_fattr_init(data
->res
.fattr
);
2929 nfs_fattr_init(data
->res
.dir_fattr
);
2934 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2936 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
2937 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
2939 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2940 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2941 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2946 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2951 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2952 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2954 struct nfs4_createdata
*data
;
2955 int status
= -ENAMETOOLONG
;
2957 if (len
> NFS4_MAXPATHLEN
)
2961 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2965 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2966 data
->arg
.u
.symlink
.pages
= &page
;
2967 data
->arg
.u
.symlink
.len
= len
;
2969 status
= nfs4_do_create(dir
, dentry
, data
);
2971 nfs4_free_createdata(data
);
2976 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2977 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2979 struct nfs4_exception exception
= { };
2982 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2983 _nfs4_proc_symlink(dir
, dentry
, page
,
2986 } while (exception
.retry
);
2990 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2991 struct iattr
*sattr
)
2993 struct nfs4_createdata
*data
;
2994 int status
= -ENOMEM
;
2996 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3000 status
= nfs4_do_create(dir
, dentry
, data
);
3002 nfs4_free_createdata(data
);
3007 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3008 struct iattr
*sattr
)
3010 struct nfs4_exception exception
= { };
3013 sattr
->ia_mode
&= ~current_umask();
3015 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3016 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3018 } while (exception
.retry
);
3022 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3023 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3025 struct inode
*dir
= dentry
->d_inode
;
3026 struct nfs4_readdir_arg args
= {
3031 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3034 struct nfs4_readdir_res res
;
3035 struct rpc_message msg
= {
3036 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3043 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3044 dentry
->d_parent
->d_name
.name
,
3045 dentry
->d_name
.name
,
3046 (unsigned long long)cookie
);
3047 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
3048 res
.pgbase
= args
.pgbase
;
3049 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3051 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3052 status
+= args
.pgbase
;
3055 nfs_invalidate_atime(dir
);
3057 dprintk("%s: returns %d\n", __func__
, status
);
3061 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3062 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3064 struct nfs4_exception exception
= { };
3067 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3068 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3069 pages
, count
, plus
),
3071 } while (exception
.retry
);
3075 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3076 struct iattr
*sattr
, dev_t rdev
)
3078 struct nfs4_createdata
*data
;
3079 int mode
= sattr
->ia_mode
;
3080 int status
= -ENOMEM
;
3082 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
3083 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
3085 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3090 data
->arg
.ftype
= NF4FIFO
;
3091 else if (S_ISBLK(mode
)) {
3092 data
->arg
.ftype
= NF4BLK
;
3093 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3094 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3096 else if (S_ISCHR(mode
)) {
3097 data
->arg
.ftype
= NF4CHR
;
3098 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3099 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3102 status
= nfs4_do_create(dir
, dentry
, data
);
3104 nfs4_free_createdata(data
);
3109 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3110 struct iattr
*sattr
, dev_t rdev
)
3112 struct nfs4_exception exception
= { };
3115 sattr
->ia_mode
&= ~current_umask();
3117 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3118 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3120 } while (exception
.retry
);
3124 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3125 struct nfs_fsstat
*fsstat
)
3127 struct nfs4_statfs_arg args
= {
3129 .bitmask
= server
->attr_bitmask
,
3131 struct nfs4_statfs_res res
= {
3134 struct rpc_message msg
= {
3135 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3140 nfs_fattr_init(fsstat
->fattr
);
3141 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3144 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3146 struct nfs4_exception exception
= { };
3149 err
= nfs4_handle_exception(server
,
3150 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3152 } while (exception
.retry
);
3156 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3157 struct nfs_fsinfo
*fsinfo
)
3159 struct nfs4_fsinfo_arg args
= {
3161 .bitmask
= server
->attr_bitmask
,
3163 struct nfs4_fsinfo_res res
= {
3166 struct rpc_message msg
= {
3167 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3172 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3175 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3177 struct nfs4_exception exception
= { };
3181 err
= nfs4_handle_exception(server
,
3182 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3184 } while (exception
.retry
);
3188 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3190 nfs_fattr_init(fsinfo
->fattr
);
3191 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3194 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3195 struct nfs_pathconf
*pathconf
)
3197 struct nfs4_pathconf_arg args
= {
3199 .bitmask
= server
->attr_bitmask
,
3201 struct nfs4_pathconf_res res
= {
3202 .pathconf
= pathconf
,
3204 struct rpc_message msg
= {
3205 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3210 /* None of the pathconf attributes are mandatory to implement */
3211 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3212 memset(pathconf
, 0, sizeof(*pathconf
));
3216 nfs_fattr_init(pathconf
->fattr
);
3217 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3220 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3221 struct nfs_pathconf
*pathconf
)
3223 struct nfs4_exception exception
= { };
3227 err
= nfs4_handle_exception(server
,
3228 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3230 } while (exception
.retry
);
3234 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3236 nfs_invalidate_atime(data
->inode
);
3239 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3241 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3243 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3244 rpc_restart_call_prepare(task
);
3248 __nfs4_read_done_cb(data
);
3249 if (task
->tk_status
> 0)
3250 renew_lease(server
, data
->timestamp
);
3254 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3257 dprintk("--> %s\n", __func__
);
3259 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3262 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3263 nfs4_read_done_cb(task
, data
);
3266 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3268 data
->timestamp
= jiffies
;
3269 data
->read_done_cb
= nfs4_read_done_cb
;
3270 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3271 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3274 /* Reset the the nfs_read_data to send the read to the MDS. */
3275 void nfs4_reset_read(struct rpc_task
*task
, struct nfs_read_data
*data
)
3277 dprintk("%s Reset task for i/o through\n", __func__
);
3278 put_lseg(data
->lseg
);
3280 /* offsets will differ in the dense stripe case */
3281 data
->args
.offset
= data
->mds_offset
;
3282 data
->ds_clp
= NULL
;
3283 data
->args
.fh
= NFS_FH(data
->inode
);
3284 data
->read_done_cb
= nfs4_read_done_cb
;
3285 task
->tk_ops
= data
->mds_ops
;
3286 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3288 EXPORT_SYMBOL_GPL(nfs4_reset_read
);
3290 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3292 struct inode
*inode
= data
->inode
;
3294 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3295 rpc_restart_call_prepare(task
);
3298 if (task
->tk_status
>= 0) {
3299 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3300 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3305 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3307 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3309 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3310 nfs4_write_done_cb(task
, data
);
3313 /* Reset the the nfs_write_data to send the write to the MDS. */
3314 void nfs4_reset_write(struct rpc_task
*task
, struct nfs_write_data
*data
)
3316 dprintk("%s Reset task for i/o through\n", __func__
);
3317 put_lseg(data
->lseg
);
3319 data
->ds_clp
= NULL
;
3320 data
->write_done_cb
= nfs4_write_done_cb
;
3321 data
->args
.fh
= NFS_FH(data
->inode
);
3322 data
->args
.bitmask
= data
->res
.server
->cache_consistency_bitmask
;
3323 data
->args
.offset
= data
->mds_offset
;
3324 data
->res
.fattr
= &data
->fattr
;
3325 task
->tk_ops
= data
->mds_ops
;
3326 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3328 EXPORT_SYMBOL_GPL(nfs4_reset_write
);
3330 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3332 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3335 data
->args
.bitmask
= NULL
;
3336 data
->res
.fattr
= NULL
;
3338 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3339 if (!data
->write_done_cb
)
3340 data
->write_done_cb
= nfs4_write_done_cb
;
3341 data
->res
.server
= server
;
3342 data
->timestamp
= jiffies
;
3344 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3345 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3348 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3350 struct inode
*inode
= data
->inode
;
3352 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3353 rpc_restart_call_prepare(task
);
3356 nfs_refresh_inode(inode
, data
->res
.fattr
);
3360 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3362 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3364 return data
->write_done_cb(task
, data
);
3367 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3369 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3372 data
->args
.bitmask
= NULL
;
3373 data
->res
.fattr
= NULL
;
3375 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3376 if (!data
->write_done_cb
)
3377 data
->write_done_cb
= nfs4_commit_done_cb
;
3378 data
->res
.server
= server
;
3379 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3380 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3383 struct nfs4_renewdata
{
3384 struct nfs_client
*client
;
3385 unsigned long timestamp
;
3389 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3390 * standalone procedure for queueing an asynchronous RENEW.
3392 static void nfs4_renew_release(void *calldata
)
3394 struct nfs4_renewdata
*data
= calldata
;
3395 struct nfs_client
*clp
= data
->client
;
3397 if (atomic_read(&clp
->cl_count
) > 1)
3398 nfs4_schedule_state_renewal(clp
);
3399 nfs_put_client(clp
);
3403 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3405 struct nfs4_renewdata
*data
= calldata
;
3406 struct nfs_client
*clp
= data
->client
;
3407 unsigned long timestamp
= data
->timestamp
;
3409 if (task
->tk_status
< 0) {
3410 /* Unless we're shutting down, schedule state recovery! */
3411 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3413 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3414 nfs4_schedule_lease_recovery(clp
);
3417 nfs4_schedule_path_down_recovery(clp
);
3419 do_renew_lease(clp
, timestamp
);
3422 static const struct rpc_call_ops nfs4_renew_ops
= {
3423 .rpc_call_done
= nfs4_renew_done
,
3424 .rpc_release
= nfs4_renew_release
,
3427 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3429 struct rpc_message msg
= {
3430 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3434 struct nfs4_renewdata
*data
;
3436 if (renew_flags
== 0)
3438 if (!atomic_inc_not_zero(&clp
->cl_count
))
3440 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3444 data
->timestamp
= jiffies
;
3445 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3446 &nfs4_renew_ops
, data
);
3449 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3451 struct rpc_message msg
= {
3452 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3456 unsigned long now
= jiffies
;
3459 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3462 do_renew_lease(clp
, now
);
3466 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3468 return (server
->caps
& NFS_CAP_ACLS
)
3469 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3470 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3473 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3474 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3477 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3479 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3480 struct page
**pages
, unsigned int *pgbase
)
3482 struct page
*newpage
, **spages
;
3488 len
= min_t(size_t, PAGE_CACHE_SIZE
, buflen
);
3489 newpage
= alloc_page(GFP_KERNEL
);
3491 if (newpage
== NULL
)
3493 memcpy(page_address(newpage
), buf
, len
);
3498 } while (buflen
!= 0);
3504 __free_page(spages
[rc
-1]);
3508 struct nfs4_cached_acl
{
3514 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3516 struct nfs_inode
*nfsi
= NFS_I(inode
);
3518 spin_lock(&inode
->i_lock
);
3519 kfree(nfsi
->nfs4_acl
);
3520 nfsi
->nfs4_acl
= acl
;
3521 spin_unlock(&inode
->i_lock
);
3524 static void nfs4_zap_acl_attr(struct inode
*inode
)
3526 nfs4_set_cached_acl(inode
, NULL
);
3529 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3531 struct nfs_inode
*nfsi
= NFS_I(inode
);
3532 struct nfs4_cached_acl
*acl
;
3535 spin_lock(&inode
->i_lock
);
3536 acl
= nfsi
->nfs4_acl
;
3539 if (buf
== NULL
) /* user is just asking for length */
3541 if (acl
->cached
== 0)
3543 ret
= -ERANGE
; /* see getxattr(2) man page */
3544 if (acl
->len
> buflen
)
3546 memcpy(buf
, acl
->data
, acl
->len
);
3550 spin_unlock(&inode
->i_lock
);
3554 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3556 struct nfs4_cached_acl
*acl
;
3558 if (buf
&& acl_len
<= PAGE_SIZE
) {
3559 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3563 memcpy(acl
->data
, buf
, acl_len
);
3565 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3572 nfs4_set_cached_acl(inode
, acl
);
3576 * The getxattr API returns the required buffer length when called with a
3577 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3578 * the required buf. On a NULL buf, we send a page of data to the server
3579 * guessing that the ACL request can be serviced by a page. If so, we cache
3580 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3581 * the cache. If not so, we throw away the page, and cache the required
3582 * length. The next getxattr call will then produce another round trip to
3583 * the server, this time with the input buf of the required size.
3585 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3587 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3588 struct nfs_getaclargs args
= {
3589 .fh
= NFS_FH(inode
),
3593 struct nfs_getaclres res
= {
3597 struct rpc_message msg
= {
3598 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3602 int ret
= -ENOMEM
, npages
, i
, acl_len
= 0;
3604 npages
= (buflen
+ PAGE_SIZE
- 1) >> PAGE_SHIFT
;
3605 /* As long as we're doing a round trip to the server anyway,
3606 * let's be prepared for a page of acl data. */
3610 for (i
= 0; i
< npages
; i
++) {
3611 pages
[i
] = alloc_page(GFP_KERNEL
);
3616 /* for decoding across pages */
3617 args
.acl_scratch
= alloc_page(GFP_KERNEL
);
3618 if (!args
.acl_scratch
)
3621 args
.acl_len
= npages
* PAGE_SIZE
;
3622 args
.acl_pgbase
= 0;
3623 /* Let decode_getfacl know not to fail if the ACL data is larger than
3624 * the page we send as a guess */
3626 res
.acl_flags
|= NFS4_ACL_LEN_REQUEST
;
3627 resp_buf
= page_address(pages
[0]);
3629 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3630 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3631 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3632 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3636 acl_len
= res
.acl_len
- res
.acl_data_offset
;
3637 if (acl_len
> args
.acl_len
)
3638 nfs4_write_cached_acl(inode
, NULL
, acl_len
);
3640 nfs4_write_cached_acl(inode
, resp_buf
+ res
.acl_data_offset
,
3644 if (acl_len
> buflen
)
3646 _copy_from_pages(buf
, pages
, res
.acl_data_offset
,
3651 for (i
= 0; i
< npages
; i
++)
3653 __free_page(pages
[i
]);
3654 if (args
.acl_scratch
)
3655 __free_page(args
.acl_scratch
);
3659 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3661 struct nfs4_exception exception
= { };
3664 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3667 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3668 } while (exception
.retry
);
3672 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3674 struct nfs_server
*server
= NFS_SERVER(inode
);
3677 if (!nfs4_server_supports_acls(server
))
3679 ret
= nfs_revalidate_inode(server
, inode
);
3682 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3683 nfs_zap_acl_cache(inode
);
3684 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3686 /* -ENOENT is returned if there is no ACL or if there is an ACL
3687 * but no cached acl data, just the acl length */
3689 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3692 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3694 struct nfs_server
*server
= NFS_SERVER(inode
);
3695 struct page
*pages
[NFS4ACL_MAXPAGES
];
3696 struct nfs_setaclargs arg
= {
3697 .fh
= NFS_FH(inode
),
3701 struct nfs_setaclres res
;
3702 struct rpc_message msg
= {
3703 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3709 if (!nfs4_server_supports_acls(server
))
3711 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3714 nfs_inode_return_delegation(inode
);
3715 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3718 * Free each page after tx, so the only ref left is
3719 * held by the network stack
3722 put_page(pages
[i
-1]);
3725 * Acl update can result in inode attribute update.
3726 * so mark the attribute cache invalid.
3728 spin_lock(&inode
->i_lock
);
3729 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3730 spin_unlock(&inode
->i_lock
);
3731 nfs_access_zap_cache(inode
);
3732 nfs_zap_acl_cache(inode
);
3736 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3738 struct nfs4_exception exception
= { };
3741 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3742 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3744 } while (exception
.retry
);
3749 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3751 struct nfs_client
*clp
= server
->nfs_client
;
3753 if (task
->tk_status
>= 0)
3755 switch(task
->tk_status
) {
3756 case -NFS4ERR_ADMIN_REVOKED
:
3757 case -NFS4ERR_BAD_STATEID
:
3758 case -NFS4ERR_OPENMODE
:
3761 nfs4_schedule_stateid_recovery(server
, state
);
3762 goto wait_on_recovery
;
3763 case -NFS4ERR_EXPIRED
:
3765 nfs4_schedule_stateid_recovery(server
, state
);
3766 case -NFS4ERR_STALE_STATEID
:
3767 case -NFS4ERR_STALE_CLIENTID
:
3768 nfs4_schedule_lease_recovery(clp
);
3769 goto wait_on_recovery
;
3770 #if defined(CONFIG_NFS_V4_1)
3771 case -NFS4ERR_BADSESSION
:
3772 case -NFS4ERR_BADSLOT
:
3773 case -NFS4ERR_BAD_HIGH_SLOT
:
3774 case -NFS4ERR_DEADSESSION
:
3775 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3776 case -NFS4ERR_SEQ_FALSE_RETRY
:
3777 case -NFS4ERR_SEQ_MISORDERED
:
3778 dprintk("%s ERROR %d, Reset session\n", __func__
,
3780 nfs4_schedule_session_recovery(clp
->cl_session
);
3781 task
->tk_status
= 0;
3783 #endif /* CONFIG_NFS_V4_1 */
3784 case -NFS4ERR_DELAY
:
3785 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3786 case -NFS4ERR_GRACE
:
3788 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3789 task
->tk_status
= 0;
3791 case -NFS4ERR_RETRY_UNCACHED_REP
:
3792 case -NFS4ERR_OLD_STATEID
:
3793 task
->tk_status
= 0;
3796 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3799 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3800 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3801 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3802 task
->tk_status
= 0;
3806 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
3807 unsigned short port
, struct rpc_cred
*cred
,
3808 struct nfs4_setclientid_res
*res
)
3810 nfs4_verifier sc_verifier
;
3811 struct nfs4_setclientid setclientid
= {
3812 .sc_verifier
= &sc_verifier
,
3814 .sc_cb_ident
= clp
->cl_cb_ident
,
3816 struct rpc_message msg
= {
3817 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3818 .rpc_argp
= &setclientid
,
3826 p
= (__be32
*)sc_verifier
.data
;
3827 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3828 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3831 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3832 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3834 rpc_peeraddr2str(clp
->cl_rpcclient
,
3836 rpc_peeraddr2str(clp
->cl_rpcclient
,
3838 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3839 clp
->cl_id_uniquifier
);
3840 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3841 sizeof(setclientid
.sc_netid
),
3842 rpc_peeraddr2str(clp
->cl_rpcclient
,
3843 RPC_DISPLAY_NETID
));
3844 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3845 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3846 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3848 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3849 if (status
!= -NFS4ERR_CLID_INUSE
)
3852 ++clp
->cl_id_uniquifier
;
3856 ssleep(clp
->cl_lease_time
/ HZ
+ 1);
3861 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3862 struct nfs4_setclientid_res
*arg
,
3863 struct rpc_cred
*cred
)
3865 struct nfs_fsinfo fsinfo
;
3866 struct rpc_message msg
= {
3867 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3869 .rpc_resp
= &fsinfo
,
3876 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3878 spin_lock(&clp
->cl_lock
);
3879 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3880 clp
->cl_last_renewal
= now
;
3881 spin_unlock(&clp
->cl_lock
);
3886 struct nfs4_delegreturndata
{
3887 struct nfs4_delegreturnargs args
;
3888 struct nfs4_delegreturnres res
;
3890 nfs4_stateid stateid
;
3891 unsigned long timestamp
;
3892 struct nfs_fattr fattr
;
3896 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3898 struct nfs4_delegreturndata
*data
= calldata
;
3900 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3903 switch (task
->tk_status
) {
3904 case -NFS4ERR_STALE_STATEID
:
3905 case -NFS4ERR_EXPIRED
:
3907 renew_lease(data
->res
.server
, data
->timestamp
);
3910 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
3912 rpc_restart_call_prepare(task
);
3916 data
->rpc_status
= task
->tk_status
;
3919 static void nfs4_delegreturn_release(void *calldata
)
3924 #if defined(CONFIG_NFS_V4_1)
3925 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3927 struct nfs4_delegreturndata
*d_data
;
3929 d_data
= (struct nfs4_delegreturndata
*)data
;
3931 if (nfs4_setup_sequence(d_data
->res
.server
,
3932 &d_data
->args
.seq_args
,
3933 &d_data
->res
.seq_res
, task
))
3935 rpc_call_start(task
);
3937 #endif /* CONFIG_NFS_V4_1 */
3939 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3940 #if defined(CONFIG_NFS_V4_1)
3941 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3942 #endif /* CONFIG_NFS_V4_1 */
3943 .rpc_call_done
= nfs4_delegreturn_done
,
3944 .rpc_release
= nfs4_delegreturn_release
,
3947 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3949 struct nfs4_delegreturndata
*data
;
3950 struct nfs_server
*server
= NFS_SERVER(inode
);
3951 struct rpc_task
*task
;
3952 struct rpc_message msg
= {
3953 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3956 struct rpc_task_setup task_setup_data
= {
3957 .rpc_client
= server
->client
,
3958 .rpc_message
= &msg
,
3959 .callback_ops
= &nfs4_delegreturn_ops
,
3960 .flags
= RPC_TASK_ASYNC
,
3964 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
3967 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3968 data
->args
.fhandle
= &data
->fh
;
3969 data
->args
.stateid
= &data
->stateid
;
3970 data
->args
.bitmask
= server
->attr_bitmask
;
3971 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3972 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3973 data
->res
.fattr
= &data
->fattr
;
3974 data
->res
.server
= server
;
3975 nfs_fattr_init(data
->res
.fattr
);
3976 data
->timestamp
= jiffies
;
3977 data
->rpc_status
= 0;
3979 task_setup_data
.callback_data
= data
;
3980 msg
.rpc_argp
= &data
->args
;
3981 msg
.rpc_resp
= &data
->res
;
3982 task
= rpc_run_task(&task_setup_data
);
3984 return PTR_ERR(task
);
3987 status
= nfs4_wait_for_completion_rpc_task(task
);
3990 status
= data
->rpc_status
;
3993 nfs_refresh_inode(inode
, &data
->fattr
);
3999 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4001 struct nfs_server
*server
= NFS_SERVER(inode
);
4002 struct nfs4_exception exception
= { };
4005 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4007 case -NFS4ERR_STALE_STATEID
:
4008 case -NFS4ERR_EXPIRED
:
4012 err
= nfs4_handle_exception(server
, err
, &exception
);
4013 } while (exception
.retry
);
4017 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4018 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4021 * sleep, with exponential backoff, and retry the LOCK operation.
4023 static unsigned long
4024 nfs4_set_lock_task_retry(unsigned long timeout
)
4026 freezable_schedule_timeout_killable(timeout
);
4028 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4029 return NFS4_LOCK_MAXTIMEOUT
;
4033 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4035 struct inode
*inode
= state
->inode
;
4036 struct nfs_server
*server
= NFS_SERVER(inode
);
4037 struct nfs_client
*clp
= server
->nfs_client
;
4038 struct nfs_lockt_args arg
= {
4039 .fh
= NFS_FH(inode
),
4042 struct nfs_lockt_res res
= {
4045 struct rpc_message msg
= {
4046 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4049 .rpc_cred
= state
->owner
->so_cred
,
4051 struct nfs4_lock_state
*lsp
;
4054 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4055 status
= nfs4_set_lock_state(state
, request
);
4058 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4059 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4060 arg
.lock_owner
.s_dev
= server
->s_dev
;
4061 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4064 request
->fl_type
= F_UNLCK
;
4066 case -NFS4ERR_DENIED
:
4069 request
->fl_ops
->fl_release_private(request
);
4074 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4076 struct nfs4_exception exception
= { };
4080 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4081 _nfs4_proc_getlk(state
, cmd
, request
),
4083 } while (exception
.retry
);
4087 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4090 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4092 res
= posix_lock_file_wait(file
, fl
);
4095 res
= flock_lock_file_wait(file
, fl
);
4103 struct nfs4_unlockdata
{
4104 struct nfs_locku_args arg
;
4105 struct nfs_locku_res res
;
4106 struct nfs4_lock_state
*lsp
;
4107 struct nfs_open_context
*ctx
;
4108 struct file_lock fl
;
4109 const struct nfs_server
*server
;
4110 unsigned long timestamp
;
4113 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4114 struct nfs_open_context
*ctx
,
4115 struct nfs4_lock_state
*lsp
,
4116 struct nfs_seqid
*seqid
)
4118 struct nfs4_unlockdata
*p
;
4119 struct inode
*inode
= lsp
->ls_state
->inode
;
4121 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4124 p
->arg
.fh
= NFS_FH(inode
);
4126 p
->arg
.seqid
= seqid
;
4127 p
->res
.seqid
= seqid
;
4128 p
->arg
.stateid
= &lsp
->ls_stateid
;
4130 atomic_inc(&lsp
->ls_count
);
4131 /* Ensure we don't close file until we're done freeing locks! */
4132 p
->ctx
= get_nfs_open_context(ctx
);
4133 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4134 p
->server
= NFS_SERVER(inode
);
4138 static void nfs4_locku_release_calldata(void *data
)
4140 struct nfs4_unlockdata
*calldata
= data
;
4141 nfs_free_seqid(calldata
->arg
.seqid
);
4142 nfs4_put_lock_state(calldata
->lsp
);
4143 put_nfs_open_context(calldata
->ctx
);
4147 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4149 struct nfs4_unlockdata
*calldata
= data
;
4151 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4153 switch (task
->tk_status
) {
4155 memcpy(calldata
->lsp
->ls_stateid
.data
,
4156 calldata
->res
.stateid
.data
,
4157 sizeof(calldata
->lsp
->ls_stateid
.data
));
4158 renew_lease(calldata
->server
, calldata
->timestamp
);
4160 case -NFS4ERR_BAD_STATEID
:
4161 case -NFS4ERR_OLD_STATEID
:
4162 case -NFS4ERR_STALE_STATEID
:
4163 case -NFS4ERR_EXPIRED
:
4166 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4167 rpc_restart_call_prepare(task
);
4171 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4173 struct nfs4_unlockdata
*calldata
= data
;
4175 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4177 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
4178 /* Note: exit _without_ running nfs4_locku_done */
4179 task
->tk_action
= NULL
;
4182 calldata
->timestamp
= jiffies
;
4183 if (nfs4_setup_sequence(calldata
->server
,
4184 &calldata
->arg
.seq_args
,
4185 &calldata
->res
.seq_res
, task
))
4187 rpc_call_start(task
);
4190 static const struct rpc_call_ops nfs4_locku_ops
= {
4191 .rpc_call_prepare
= nfs4_locku_prepare
,
4192 .rpc_call_done
= nfs4_locku_done
,
4193 .rpc_release
= nfs4_locku_release_calldata
,
4196 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4197 struct nfs_open_context
*ctx
,
4198 struct nfs4_lock_state
*lsp
,
4199 struct nfs_seqid
*seqid
)
4201 struct nfs4_unlockdata
*data
;
4202 struct rpc_message msg
= {
4203 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4204 .rpc_cred
= ctx
->cred
,
4206 struct rpc_task_setup task_setup_data
= {
4207 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4208 .rpc_message
= &msg
,
4209 .callback_ops
= &nfs4_locku_ops
,
4210 .workqueue
= nfsiod_workqueue
,
4211 .flags
= RPC_TASK_ASYNC
,
4214 /* Ensure this is an unlock - when canceling a lock, the
4215 * canceled lock is passed in, and it won't be an unlock.
4217 fl
->fl_type
= F_UNLCK
;
4219 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4221 nfs_free_seqid(seqid
);
4222 return ERR_PTR(-ENOMEM
);
4225 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4226 msg
.rpc_argp
= &data
->arg
;
4227 msg
.rpc_resp
= &data
->res
;
4228 task_setup_data
.callback_data
= data
;
4229 return rpc_run_task(&task_setup_data
);
4232 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4234 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4235 struct nfs_seqid
*seqid
;
4236 struct nfs4_lock_state
*lsp
;
4237 struct rpc_task
*task
;
4239 unsigned char fl_flags
= request
->fl_flags
;
4241 status
= nfs4_set_lock_state(state
, request
);
4242 /* Unlock _before_ we do the RPC call */
4243 request
->fl_flags
|= FL_EXISTS
;
4244 down_read(&nfsi
->rwsem
);
4245 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4246 up_read(&nfsi
->rwsem
);
4249 up_read(&nfsi
->rwsem
);
4252 /* Is this a delegated lock? */
4253 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4255 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4256 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4260 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4261 status
= PTR_ERR(task
);
4264 status
= nfs4_wait_for_completion_rpc_task(task
);
4267 request
->fl_flags
= fl_flags
;
4271 struct nfs4_lockdata
{
4272 struct nfs_lock_args arg
;
4273 struct nfs_lock_res res
;
4274 struct nfs4_lock_state
*lsp
;
4275 struct nfs_open_context
*ctx
;
4276 struct file_lock fl
;
4277 unsigned long timestamp
;
4280 struct nfs_server
*server
;
4283 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4284 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4287 struct nfs4_lockdata
*p
;
4288 struct inode
*inode
= lsp
->ls_state
->inode
;
4289 struct nfs_server
*server
= NFS_SERVER(inode
);
4291 p
= kzalloc(sizeof(*p
), gfp_mask
);
4295 p
->arg
.fh
= NFS_FH(inode
);
4297 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4298 if (p
->arg
.open_seqid
== NULL
)
4300 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4301 if (p
->arg
.lock_seqid
== NULL
)
4302 goto out_free_seqid
;
4303 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4304 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4305 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4306 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4307 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4310 atomic_inc(&lsp
->ls_count
);
4311 p
->ctx
= get_nfs_open_context(ctx
);
4312 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4315 nfs_free_seqid(p
->arg
.open_seqid
);
4321 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4323 struct nfs4_lockdata
*data
= calldata
;
4324 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4326 dprintk("%s: begin!\n", __func__
);
4327 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4329 /* Do we need to do an open_to_lock_owner? */
4330 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4331 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4333 data
->arg
.open_stateid
= &state
->stateid
;
4334 data
->arg
.new_lock_owner
= 1;
4335 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4337 data
->arg
.new_lock_owner
= 0;
4338 data
->timestamp
= jiffies
;
4339 if (nfs4_setup_sequence(data
->server
,
4340 &data
->arg
.seq_args
,
4341 &data
->res
.seq_res
, task
))
4343 rpc_call_start(task
);
4344 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4347 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4349 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4350 nfs4_lock_prepare(task
, calldata
);
4353 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4355 struct nfs4_lockdata
*data
= calldata
;
4357 dprintk("%s: begin!\n", __func__
);
4359 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4362 data
->rpc_status
= task
->tk_status
;
4363 if (data
->arg
.new_lock_owner
!= 0) {
4364 if (data
->rpc_status
== 0)
4365 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4369 if (data
->rpc_status
== 0) {
4370 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
4371 sizeof(data
->lsp
->ls_stateid
.data
));
4372 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4373 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4376 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4379 static void nfs4_lock_release(void *calldata
)
4381 struct nfs4_lockdata
*data
= calldata
;
4383 dprintk("%s: begin!\n", __func__
);
4384 nfs_free_seqid(data
->arg
.open_seqid
);
4385 if (data
->cancelled
!= 0) {
4386 struct rpc_task
*task
;
4387 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4388 data
->arg
.lock_seqid
);
4390 rpc_put_task_async(task
);
4391 dprintk("%s: cancelling lock!\n", __func__
);
4393 nfs_free_seqid(data
->arg
.lock_seqid
);
4394 nfs4_put_lock_state(data
->lsp
);
4395 put_nfs_open_context(data
->ctx
);
4397 dprintk("%s: done!\n", __func__
);
4400 static const struct rpc_call_ops nfs4_lock_ops
= {
4401 .rpc_call_prepare
= nfs4_lock_prepare
,
4402 .rpc_call_done
= nfs4_lock_done
,
4403 .rpc_release
= nfs4_lock_release
,
4406 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4407 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4408 .rpc_call_done
= nfs4_lock_done
,
4409 .rpc_release
= nfs4_lock_release
,
4412 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4415 case -NFS4ERR_ADMIN_REVOKED
:
4416 case -NFS4ERR_BAD_STATEID
:
4417 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4418 if (new_lock_owner
!= 0 ||
4419 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4420 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4422 case -NFS4ERR_STALE_STATEID
:
4423 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4424 case -NFS4ERR_EXPIRED
:
4425 nfs4_schedule_lease_recovery(server
->nfs_client
);
4429 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4431 struct nfs4_lockdata
*data
;
4432 struct rpc_task
*task
;
4433 struct rpc_message msg
= {
4434 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4435 .rpc_cred
= state
->owner
->so_cred
,
4437 struct rpc_task_setup task_setup_data
= {
4438 .rpc_client
= NFS_CLIENT(state
->inode
),
4439 .rpc_message
= &msg
,
4440 .callback_ops
= &nfs4_lock_ops
,
4441 .workqueue
= nfsiod_workqueue
,
4442 .flags
= RPC_TASK_ASYNC
,
4446 dprintk("%s: begin!\n", __func__
);
4447 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4448 fl
->fl_u
.nfs4_fl
.owner
,
4449 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4453 data
->arg
.block
= 1;
4454 if (recovery_type
> NFS_LOCK_NEW
) {
4455 if (recovery_type
== NFS_LOCK_RECLAIM
)
4456 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4457 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4459 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4460 msg
.rpc_argp
= &data
->arg
;
4461 msg
.rpc_resp
= &data
->res
;
4462 task_setup_data
.callback_data
= data
;
4463 task
= rpc_run_task(&task_setup_data
);
4465 return PTR_ERR(task
);
4466 ret
= nfs4_wait_for_completion_rpc_task(task
);
4468 ret
= data
->rpc_status
;
4470 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4471 data
->arg
.new_lock_owner
, ret
);
4473 data
->cancelled
= 1;
4475 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4479 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4481 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4482 struct nfs4_exception exception
= { };
4486 /* Cache the lock if possible... */
4487 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4489 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4490 if (err
!= -NFS4ERR_DELAY
)
4492 nfs4_handle_exception(server
, err
, &exception
);
4493 } while (exception
.retry
);
4497 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4499 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4500 struct nfs4_exception exception
= { };
4503 err
= nfs4_set_lock_state(state
, request
);
4507 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4509 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4513 case -NFS4ERR_GRACE
:
4514 case -NFS4ERR_DELAY
:
4515 nfs4_handle_exception(server
, err
, &exception
);
4518 } while (exception
.retry
);
4523 #if defined(CONFIG_NFS_V4_1)
4524 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4526 int status
, ret
= NFS_OK
;
4527 struct nfs4_lock_state
*lsp
;
4528 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4530 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4531 if (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) {
4532 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4533 if (status
!= NFS_OK
) {
4534 nfs41_free_stateid(server
, &lsp
->ls_stateid
);
4535 lsp
->ls_flags
&= ~NFS_LOCK_INITIALIZED
;
4544 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4546 int status
= NFS_OK
;
4548 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4549 status
= nfs41_check_expired_locks(state
);
4550 if (status
== NFS_OK
)
4552 return nfs4_lock_expired(state
, request
);
4556 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4558 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4559 unsigned char fl_flags
= request
->fl_flags
;
4560 int status
= -ENOLCK
;
4562 if ((fl_flags
& FL_POSIX
) &&
4563 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4565 /* Is this a delegated open? */
4566 status
= nfs4_set_lock_state(state
, request
);
4569 request
->fl_flags
|= FL_ACCESS
;
4570 status
= do_vfs_lock(request
->fl_file
, request
);
4573 down_read(&nfsi
->rwsem
);
4574 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4575 /* Yes: cache locks! */
4576 /* ...but avoid races with delegation recall... */
4577 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4578 status
= do_vfs_lock(request
->fl_file
, request
);
4581 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4584 /* Note: we always want to sleep here! */
4585 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4586 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4587 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
4589 up_read(&nfsi
->rwsem
);
4591 request
->fl_flags
= fl_flags
;
4595 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4597 struct nfs4_exception exception
= { };
4601 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4602 if (err
== -NFS4ERR_DENIED
)
4604 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4606 } while (exception
.retry
);
4611 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4613 struct nfs_open_context
*ctx
;
4614 struct nfs4_state
*state
;
4615 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4618 /* verify open state */
4619 ctx
= nfs_file_open_context(filp
);
4622 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4625 if (IS_GETLK(cmd
)) {
4627 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4631 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4634 if (request
->fl_type
== F_UNLCK
) {
4636 return nfs4_proc_unlck(state
, cmd
, request
);
4643 status
= nfs4_proc_setlk(state
, cmd
, request
);
4644 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4646 timeout
= nfs4_set_lock_task_retry(timeout
);
4647 status
= -ERESTARTSYS
;
4650 } while(status
< 0);
4654 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4656 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4657 struct nfs4_exception exception
= { };
4660 err
= nfs4_set_lock_state(state
, fl
);
4664 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4667 printk(KERN_ERR
"%s: unhandled error %d.\n",
4672 case -NFS4ERR_EXPIRED
:
4673 nfs4_schedule_stateid_recovery(server
, state
);
4674 case -NFS4ERR_STALE_CLIENTID
:
4675 case -NFS4ERR_STALE_STATEID
:
4676 nfs4_schedule_lease_recovery(server
->nfs_client
);
4678 case -NFS4ERR_BADSESSION
:
4679 case -NFS4ERR_BADSLOT
:
4680 case -NFS4ERR_BAD_HIGH_SLOT
:
4681 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4682 case -NFS4ERR_DEADSESSION
:
4683 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
4687 * The show must go on: exit, but mark the
4688 * stateid as needing recovery.
4690 case -NFS4ERR_ADMIN_REVOKED
:
4691 case -NFS4ERR_BAD_STATEID
:
4692 case -NFS4ERR_OPENMODE
:
4693 nfs4_schedule_stateid_recovery(server
, state
);
4698 * User RPCSEC_GSS context has expired.
4699 * We cannot recover this stateid now, so
4700 * skip it and allow recovery thread to
4706 case -NFS4ERR_DENIED
:
4707 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4710 case -NFS4ERR_DELAY
:
4713 err
= nfs4_handle_exception(server
, err
, &exception
);
4714 } while (exception
.retry
);
4719 static void nfs4_release_lockowner_release(void *calldata
)
4724 const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4725 .rpc_release
= nfs4_release_lockowner_release
,
4728 void nfs4_release_lockowner(const struct nfs4_lock_state
*lsp
)
4730 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4731 struct nfs_release_lockowner_args
*args
;
4732 struct rpc_message msg
= {
4733 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4736 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
4738 args
= kmalloc(sizeof(*args
), GFP_NOFS
);
4741 args
->lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4742 args
->lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4743 args
->lock_owner
.s_dev
= server
->s_dev
;
4744 msg
.rpc_argp
= args
;
4745 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, args
);
4748 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4750 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
4751 const void *buf
, size_t buflen
,
4752 int flags
, int type
)
4754 if (strcmp(key
, "") != 0)
4757 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
4760 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
4761 void *buf
, size_t buflen
, int type
)
4763 if (strcmp(key
, "") != 0)
4766 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
4769 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
4770 size_t list_len
, const char *name
,
4771 size_t name_len
, int type
)
4773 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
4775 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4778 if (list
&& len
<= list_len
)
4779 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
4784 * nfs_fhget will use either the mounted_on_fileid or the fileid
4786 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4788 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
4789 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
4790 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4791 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4794 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4795 NFS_ATTR_FATTR_NLINK
;
4796 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4800 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4801 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4803 struct nfs_server
*server
= NFS_SERVER(dir
);
4805 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4807 struct nfs4_fs_locations_arg args
= {
4808 .dir_fh
= NFS_FH(dir
),
4813 struct nfs4_fs_locations_res res
= {
4814 .fs_locations
= fs_locations
,
4816 struct rpc_message msg
= {
4817 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4823 dprintk("%s: start\n", __func__
);
4825 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
4826 * is not supported */
4827 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
4828 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
4830 bitmask
[0] |= FATTR4_WORD0_FILEID
;
4832 nfs_fattr_init(&fs_locations
->fattr
);
4833 fs_locations
->server
= server
;
4834 fs_locations
->nlocations
= 0;
4835 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4836 dprintk("%s: returned status = %d\n", __func__
, status
);
4840 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4843 struct nfs4_secinfo_arg args
= {
4844 .dir_fh
= NFS_FH(dir
),
4847 struct nfs4_secinfo_res res
= {
4850 struct rpc_message msg
= {
4851 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
4856 dprintk("NFS call secinfo %s\n", name
->name
);
4857 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4858 dprintk("NFS reply secinfo: %d\n", status
);
4862 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4864 struct nfs4_exception exception
= { };
4867 err
= nfs4_handle_exception(NFS_SERVER(dir
),
4868 _nfs4_proc_secinfo(dir
, name
, flavors
),
4870 } while (exception
.retry
);
4874 #ifdef CONFIG_NFS_V4_1
4876 * Check the exchange flags returned by the server for invalid flags, having
4877 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
4880 static int nfs4_check_cl_exchange_flags(u32 flags
)
4882 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
4884 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
4885 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
4887 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
4891 return -NFS4ERR_INVAL
;
4895 nfs41_same_server_scope(struct server_scope
*a
, struct server_scope
*b
)
4897 if (a
->server_scope_sz
== b
->server_scope_sz
&&
4898 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
4905 * nfs4_proc_exchange_id()
4907 * Since the clientid has expired, all compounds using sessions
4908 * associated with the stale clientid will be returning
4909 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4910 * be in some phase of session reset.
4912 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4914 nfs4_verifier verifier
;
4915 struct nfs41_exchange_id_args args
= {
4917 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
4919 struct nfs41_exchange_id_res res
= {
4923 struct rpc_message msg
= {
4924 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4931 dprintk("--> %s\n", __func__
);
4932 BUG_ON(clp
== NULL
);
4934 p
= (u32
*)verifier
.data
;
4935 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4936 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4937 args
.verifier
= &verifier
;
4939 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4942 init_utsname()->nodename
,
4943 init_utsname()->domainname
,
4944 clp
->cl_rpcclient
->cl_auth
->au_flavor
);
4946 res
.server_scope
= kzalloc(sizeof(struct server_scope
), GFP_KERNEL
);
4947 if (unlikely(!res
.server_scope
))
4950 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4952 status
= nfs4_check_cl_exchange_flags(clp
->cl_exchange_flags
);
4955 if (clp
->server_scope
&&
4956 !nfs41_same_server_scope(clp
->server_scope
,
4957 res
.server_scope
)) {
4958 dprintk("%s: server_scope mismatch detected\n",
4960 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
4961 kfree(clp
->server_scope
);
4962 clp
->server_scope
= NULL
;
4965 if (!clp
->server_scope
)
4966 clp
->server_scope
= res
.server_scope
;
4968 kfree(res
.server_scope
);
4971 dprintk("<-- %s status= %d\n", __func__
, status
);
4975 struct nfs4_get_lease_time_data
{
4976 struct nfs4_get_lease_time_args
*args
;
4977 struct nfs4_get_lease_time_res
*res
;
4978 struct nfs_client
*clp
;
4981 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4985 struct nfs4_get_lease_time_data
*data
=
4986 (struct nfs4_get_lease_time_data
*)calldata
;
4988 dprintk("--> %s\n", __func__
);
4989 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4990 /* just setup sequence, do not trigger session recovery
4991 since we're invoked within one */
4992 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4993 &data
->args
->la_seq_args
,
4994 &data
->res
->lr_seq_res
, task
);
4996 BUG_ON(ret
== -EAGAIN
);
4997 rpc_call_start(task
);
4998 dprintk("<-- %s\n", __func__
);
5002 * Called from nfs4_state_manager thread for session setup, so don't recover
5003 * from sequence operation or clientid errors.
5005 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5007 struct nfs4_get_lease_time_data
*data
=
5008 (struct nfs4_get_lease_time_data
*)calldata
;
5010 dprintk("--> %s\n", __func__
);
5011 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5013 switch (task
->tk_status
) {
5014 case -NFS4ERR_DELAY
:
5015 case -NFS4ERR_GRACE
:
5016 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5017 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5018 task
->tk_status
= 0;
5020 case -NFS4ERR_RETRY_UNCACHED_REP
:
5021 rpc_restart_call_prepare(task
);
5024 dprintk("<-- %s\n", __func__
);
5027 struct rpc_call_ops nfs4_get_lease_time_ops
= {
5028 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5029 .rpc_call_done
= nfs4_get_lease_time_done
,
5032 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5034 struct rpc_task
*task
;
5035 struct nfs4_get_lease_time_args args
;
5036 struct nfs4_get_lease_time_res res
= {
5037 .lr_fsinfo
= fsinfo
,
5039 struct nfs4_get_lease_time_data data
= {
5044 struct rpc_message msg
= {
5045 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5049 struct rpc_task_setup task_setup
= {
5050 .rpc_client
= clp
->cl_rpcclient
,
5051 .rpc_message
= &msg
,
5052 .callback_ops
= &nfs4_get_lease_time_ops
,
5053 .callback_data
= &data
,
5054 .flags
= RPC_TASK_TIMEOUT
,
5058 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5059 dprintk("--> %s\n", __func__
);
5060 task
= rpc_run_task(&task_setup
);
5063 status
= PTR_ERR(task
);
5065 status
= task
->tk_status
;
5068 dprintk("<-- %s return %d\n", __func__
, status
);
5074 * Reset a slot table
5076 static int nfs4_reset_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
5079 struct nfs4_slot
*new = NULL
;
5083 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
5084 max_reqs
, tbl
->max_slots
);
5086 /* Does the newly negotiated max_reqs match the existing slot table? */
5087 if (max_reqs
!= tbl
->max_slots
) {
5089 new = kmalloc(max_reqs
* sizeof(struct nfs4_slot
),
5096 spin_lock(&tbl
->slot_tbl_lock
);
5099 tbl
->max_slots
= max_reqs
;
5101 for (i
= 0; i
< tbl
->max_slots
; ++i
)
5102 tbl
->slots
[i
].seq_nr
= ivalue
;
5103 spin_unlock(&tbl
->slot_tbl_lock
);
5104 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5105 tbl
, tbl
->slots
, tbl
->max_slots
);
5107 dprintk("<-- %s: return %d\n", __func__
, ret
);
5111 /* Destroy the slot table */
5112 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
5114 if (session
->fc_slot_table
.slots
!= NULL
) {
5115 kfree(session
->fc_slot_table
.slots
);
5116 session
->fc_slot_table
.slots
= NULL
;
5118 if (session
->bc_slot_table
.slots
!= NULL
) {
5119 kfree(session
->bc_slot_table
.slots
);
5120 session
->bc_slot_table
.slots
= NULL
;
5126 * Initialize slot table
5128 static int nfs4_init_slot_table(struct nfs4_slot_table
*tbl
,
5129 int max_slots
, int ivalue
)
5131 struct nfs4_slot
*slot
;
5134 BUG_ON(max_slots
> NFS4_MAX_SLOT_TABLE
);
5136 dprintk("--> %s: max_reqs=%u\n", __func__
, max_slots
);
5138 slot
= kcalloc(max_slots
, sizeof(struct nfs4_slot
), GFP_NOFS
);
5143 spin_lock(&tbl
->slot_tbl_lock
);
5144 tbl
->max_slots
= max_slots
;
5146 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
5147 spin_unlock(&tbl
->slot_tbl_lock
);
5148 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5149 tbl
, tbl
->slots
, tbl
->max_slots
);
5151 dprintk("<-- %s: return %d\n", __func__
, ret
);
5156 * Initialize or reset the forechannel and backchannel tables
5158 static int nfs4_setup_session_slot_tables(struct nfs4_session
*ses
)
5160 struct nfs4_slot_table
*tbl
;
5163 dprintk("--> %s\n", __func__
);
5165 tbl
= &ses
->fc_slot_table
;
5166 if (tbl
->slots
== NULL
) {
5167 status
= nfs4_init_slot_table(tbl
, ses
->fc_attrs
.max_reqs
, 1);
5168 if (status
) /* -ENOMEM */
5171 status
= nfs4_reset_slot_table(tbl
, ses
->fc_attrs
.max_reqs
, 1);
5176 tbl
= &ses
->bc_slot_table
;
5177 if (tbl
->slots
== NULL
) {
5178 status
= nfs4_init_slot_table(tbl
, ses
->bc_attrs
.max_reqs
, 0);
5180 /* Fore and back channel share a connection so get
5181 * both slot tables or neither */
5182 nfs4_destroy_slot_tables(ses
);
5184 status
= nfs4_reset_slot_table(tbl
, ses
->bc_attrs
.max_reqs
, 0);
5188 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5190 struct nfs4_session
*session
;
5191 struct nfs4_slot_table
*tbl
;
5193 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5197 tbl
= &session
->fc_slot_table
;
5198 tbl
->highest_used_slotid
= -1;
5199 spin_lock_init(&tbl
->slot_tbl_lock
);
5200 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5201 init_completion(&tbl
->complete
);
5203 tbl
= &session
->bc_slot_table
;
5204 tbl
->highest_used_slotid
= -1;
5205 spin_lock_init(&tbl
->slot_tbl_lock
);
5206 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5207 init_completion(&tbl
->complete
);
5209 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5215 void nfs4_destroy_session(struct nfs4_session
*session
)
5217 nfs4_proc_destroy_session(session
);
5218 dprintk("%s Destroy backchannel for xprt %p\n",
5219 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
5220 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
5221 NFS41_BC_MIN_CALLBACKS
);
5222 nfs4_destroy_slot_tables(session
);
5227 * Initialize the values to be used by the client in CREATE_SESSION
5228 * If nfs4_init_session set the fore channel request and response sizes,
5231 * Set the back channel max_resp_sz_cached to zero to force the client to
5232 * always set csa_cachethis to FALSE because the current implementation
5233 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5235 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5237 struct nfs4_session
*session
= args
->client
->cl_session
;
5238 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5239 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5242 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5244 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5245 /* Fore channel attributes */
5246 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5247 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5248 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5249 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
5251 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5252 "max_ops=%u max_reqs=%u\n",
5254 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5255 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5257 /* Back channel attributes */
5258 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5259 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5260 args
->bc_attrs
.max_resp_sz_cached
= 0;
5261 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5262 args
->bc_attrs
.max_reqs
= 1;
5264 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5265 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5267 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5268 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5269 args
->bc_attrs
.max_reqs
);
5272 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5274 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5275 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5277 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5280 * Our requested max_ops is the minimum we need; we're not
5281 * prepared to break up compounds into smaller pieces than that.
5282 * So, no point even trying to continue if the server won't
5285 if (rcvd
->max_ops
< sent
->max_ops
)
5287 if (rcvd
->max_reqs
== 0)
5292 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5294 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5295 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5297 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5299 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5301 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5303 /* These would render the backchannel useless: */
5304 if (rcvd
->max_ops
== 0)
5306 if (rcvd
->max_reqs
== 0)
5311 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5312 struct nfs4_session
*session
)
5316 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5319 return nfs4_verify_back_channel_attrs(args
, session
);
5322 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
5324 struct nfs4_session
*session
= clp
->cl_session
;
5325 struct nfs41_create_session_args args
= {
5327 .cb_program
= NFS4_CALLBACK
,
5329 struct nfs41_create_session_res res
= {
5332 struct rpc_message msg
= {
5333 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5339 nfs4_init_channel_attrs(&args
);
5340 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5342 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5345 /* Verify the session's negotiated channel_attrs values */
5346 status
= nfs4_verify_channel_attrs(&args
, session
);
5348 /* Increment the clientid slot sequence id */
5356 * Issues a CREATE_SESSION operation to the server.
5357 * It is the responsibility of the caller to verify the session is
5358 * expired before calling this routine.
5360 int nfs4_proc_create_session(struct nfs_client
*clp
)
5364 struct nfs4_session
*session
= clp
->cl_session
;
5366 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5368 status
= _nfs4_proc_create_session(clp
);
5372 /* Init or reset the session slot tables */
5373 status
= nfs4_setup_session_slot_tables(session
);
5374 dprintk("slot table setup returned %d\n", status
);
5378 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5379 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5380 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5382 dprintk("<-- %s\n", __func__
);
5387 * Issue the over-the-wire RPC DESTROY_SESSION.
5388 * The caller must serialize access to this routine.
5390 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
5393 struct rpc_message msg
;
5395 dprintk("--> nfs4_proc_destroy_session\n");
5397 /* session is still being setup */
5398 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5401 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
5402 msg
.rpc_argp
= session
;
5403 msg
.rpc_resp
= NULL
;
5404 msg
.rpc_cred
= NULL
;
5405 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5409 "NFS: Got error %d from the server on DESTROY_SESSION. "
5410 "Session has been destroyed regardless...\n", status
);
5412 dprintk("<-- nfs4_proc_destroy_session\n");
5416 int nfs4_init_session(struct nfs_server
*server
)
5418 struct nfs_client
*clp
= server
->nfs_client
;
5419 struct nfs4_session
*session
;
5420 unsigned int rsize
, wsize
;
5423 if (!nfs4_has_session(clp
))
5426 session
= clp
->cl_session
;
5427 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5430 rsize
= server
->rsize
;
5432 rsize
= NFS_MAX_FILE_IO_SIZE
;
5433 wsize
= server
->wsize
;
5435 wsize
= NFS_MAX_FILE_IO_SIZE
;
5437 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5438 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5440 ret
= nfs4_recover_expired_lease(server
);
5442 ret
= nfs4_check_client_ready(clp
);
5446 int nfs4_init_ds_session(struct nfs_client
*clp
)
5448 struct nfs4_session
*session
= clp
->cl_session
;
5451 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5454 ret
= nfs4_client_recover_expired_lease(clp
);
5456 /* Test for the DS role */
5457 if (!is_ds_client(clp
))
5460 ret
= nfs4_check_client_ready(clp
);
5464 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5468 * Renew the cl_session lease.
5470 struct nfs4_sequence_data
{
5471 struct nfs_client
*clp
;
5472 struct nfs4_sequence_args args
;
5473 struct nfs4_sequence_res res
;
5476 static void nfs41_sequence_release(void *data
)
5478 struct nfs4_sequence_data
*calldata
= data
;
5479 struct nfs_client
*clp
= calldata
->clp
;
5481 if (atomic_read(&clp
->cl_count
) > 1)
5482 nfs4_schedule_state_renewal(clp
);
5483 nfs_put_client(clp
);
5487 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5489 switch(task
->tk_status
) {
5490 case -NFS4ERR_DELAY
:
5491 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5494 nfs4_schedule_lease_recovery(clp
);
5499 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5501 struct nfs4_sequence_data
*calldata
= data
;
5502 struct nfs_client
*clp
= calldata
->clp
;
5504 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5507 if (task
->tk_status
< 0) {
5508 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5509 if (atomic_read(&clp
->cl_count
) == 1)
5512 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5513 rpc_restart_call_prepare(task
);
5517 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5519 dprintk("<-- %s\n", __func__
);
5522 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5524 struct nfs4_sequence_data
*calldata
= data
;
5525 struct nfs_client
*clp
= calldata
->clp
;
5526 struct nfs4_sequence_args
*args
;
5527 struct nfs4_sequence_res
*res
;
5529 args
= task
->tk_msg
.rpc_argp
;
5530 res
= task
->tk_msg
.rpc_resp
;
5532 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
))
5534 rpc_call_start(task
);
5537 static const struct rpc_call_ops nfs41_sequence_ops
= {
5538 .rpc_call_done
= nfs41_sequence_call_done
,
5539 .rpc_call_prepare
= nfs41_sequence_prepare
,
5540 .rpc_release
= nfs41_sequence_release
,
5543 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5545 struct nfs4_sequence_data
*calldata
;
5546 struct rpc_message msg
= {
5547 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5550 struct rpc_task_setup task_setup_data
= {
5551 .rpc_client
= clp
->cl_rpcclient
,
5552 .rpc_message
= &msg
,
5553 .callback_ops
= &nfs41_sequence_ops
,
5554 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5557 if (!atomic_inc_not_zero(&clp
->cl_count
))
5558 return ERR_PTR(-EIO
);
5559 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5560 if (calldata
== NULL
) {
5561 nfs_put_client(clp
);
5562 return ERR_PTR(-ENOMEM
);
5564 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
5565 msg
.rpc_argp
= &calldata
->args
;
5566 msg
.rpc_resp
= &calldata
->res
;
5567 calldata
->clp
= clp
;
5568 task_setup_data
.callback_data
= calldata
;
5570 return rpc_run_task(&task_setup_data
);
5573 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
5575 struct rpc_task
*task
;
5578 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
5580 task
= _nfs41_proc_sequence(clp
, cred
);
5582 ret
= PTR_ERR(task
);
5584 rpc_put_task_async(task
);
5585 dprintk("<-- %s status=%d\n", __func__
, ret
);
5589 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5591 struct rpc_task
*task
;
5594 task
= _nfs41_proc_sequence(clp
, cred
);
5596 ret
= PTR_ERR(task
);
5599 ret
= rpc_wait_for_completion_task(task
);
5601 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5603 if (task
->tk_status
== 0)
5604 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5605 ret
= task
->tk_status
;
5609 dprintk("<-- %s status=%d\n", __func__
, ret
);
5613 struct nfs4_reclaim_complete_data
{
5614 struct nfs_client
*clp
;
5615 struct nfs41_reclaim_complete_args arg
;
5616 struct nfs41_reclaim_complete_res res
;
5619 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5621 struct nfs4_reclaim_complete_data
*calldata
= data
;
5623 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5624 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5625 &calldata
->arg
.seq_args
,
5626 &calldata
->res
.seq_res
, task
))
5629 rpc_call_start(task
);
5632 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5634 switch(task
->tk_status
) {
5636 case -NFS4ERR_COMPLETE_ALREADY
:
5637 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5639 case -NFS4ERR_DELAY
:
5640 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5642 case -NFS4ERR_RETRY_UNCACHED_REP
:
5645 nfs4_schedule_lease_recovery(clp
);
5650 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5652 struct nfs4_reclaim_complete_data
*calldata
= data
;
5653 struct nfs_client
*clp
= calldata
->clp
;
5654 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5656 dprintk("--> %s\n", __func__
);
5657 if (!nfs41_sequence_done(task
, res
))
5660 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5661 rpc_restart_call_prepare(task
);
5664 dprintk("<-- %s\n", __func__
);
5667 static void nfs4_free_reclaim_complete_data(void *data
)
5669 struct nfs4_reclaim_complete_data
*calldata
= data
;
5674 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5675 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5676 .rpc_call_done
= nfs4_reclaim_complete_done
,
5677 .rpc_release
= nfs4_free_reclaim_complete_data
,
5681 * Issue a global reclaim complete.
5683 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5685 struct nfs4_reclaim_complete_data
*calldata
;
5686 struct rpc_task
*task
;
5687 struct rpc_message msg
= {
5688 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5690 struct rpc_task_setup task_setup_data
= {
5691 .rpc_client
= clp
->cl_rpcclient
,
5692 .rpc_message
= &msg
,
5693 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5694 .flags
= RPC_TASK_ASYNC
,
5696 int status
= -ENOMEM
;
5698 dprintk("--> %s\n", __func__
);
5699 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5700 if (calldata
== NULL
)
5702 calldata
->clp
= clp
;
5703 calldata
->arg
.one_fs
= 0;
5705 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
5706 msg
.rpc_argp
= &calldata
->arg
;
5707 msg
.rpc_resp
= &calldata
->res
;
5708 task_setup_data
.callback_data
= calldata
;
5709 task
= rpc_run_task(&task_setup_data
);
5711 status
= PTR_ERR(task
);
5714 status
= nfs4_wait_for_completion_rpc_task(task
);
5716 status
= task
->tk_status
;
5720 dprintk("<-- %s status=%d\n", __func__
, status
);
5725 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
5727 struct nfs4_layoutget
*lgp
= calldata
;
5728 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5730 dprintk("--> %s\n", __func__
);
5731 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
5732 * right now covering the LAYOUTGET we are about to send.
5733 * However, that is not so catastrophic, and there seems
5734 * to be no way to prevent it completely.
5736 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
5737 &lgp
->res
.seq_res
, task
))
5739 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
5740 NFS_I(lgp
->args
.inode
)->layout
,
5741 lgp
->args
.ctx
->state
)) {
5742 rpc_exit(task
, NFS4_OK
);
5745 rpc_call_start(task
);
5748 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
5750 struct nfs4_layoutget
*lgp
= calldata
;
5751 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5753 dprintk("--> %s\n", __func__
);
5755 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
5758 switch (task
->tk_status
) {
5761 case -NFS4ERR_LAYOUTTRYLATER
:
5762 case -NFS4ERR_RECALLCONFLICT
:
5763 task
->tk_status
= -NFS4ERR_DELAY
;
5766 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5767 rpc_restart_call_prepare(task
);
5771 dprintk("<-- %s\n", __func__
);
5774 static void nfs4_layoutget_release(void *calldata
)
5776 struct nfs4_layoutget
*lgp
= calldata
;
5778 dprintk("--> %s\n", __func__
);
5779 put_nfs_open_context(lgp
->args
.ctx
);
5781 dprintk("<-- %s\n", __func__
);
5784 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
5785 .rpc_call_prepare
= nfs4_layoutget_prepare
,
5786 .rpc_call_done
= nfs4_layoutget_done
,
5787 .rpc_release
= nfs4_layoutget_release
,
5790 int nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
)
5792 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5793 struct rpc_task
*task
;
5794 struct rpc_message msg
= {
5795 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
5796 .rpc_argp
= &lgp
->args
,
5797 .rpc_resp
= &lgp
->res
,
5799 struct rpc_task_setup task_setup_data
= {
5800 .rpc_client
= server
->client
,
5801 .rpc_message
= &msg
,
5802 .callback_ops
= &nfs4_layoutget_call_ops
,
5803 .callback_data
= lgp
,
5804 .flags
= RPC_TASK_ASYNC
,
5808 dprintk("--> %s\n", __func__
);
5810 lgp
->res
.layoutp
= &lgp
->args
.layout
;
5811 lgp
->res
.seq_res
.sr_slot
= NULL
;
5812 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
5813 task
= rpc_run_task(&task_setup_data
);
5815 return PTR_ERR(task
);
5816 status
= nfs4_wait_for_completion_rpc_task(task
);
5818 status
= task
->tk_status
;
5820 status
= pnfs_layout_process(lgp
);
5822 dprintk("<-- %s status=%d\n", __func__
, status
);
5827 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
5829 struct nfs4_layoutreturn
*lrp
= calldata
;
5831 dprintk("--> %s\n", __func__
);
5832 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
5833 &lrp
->res
.seq_res
, task
))
5835 rpc_call_start(task
);
5838 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
5840 struct nfs4_layoutreturn
*lrp
= calldata
;
5841 struct nfs_server
*server
;
5842 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
5844 dprintk("--> %s\n", __func__
);
5846 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
5849 server
= NFS_SERVER(lrp
->args
.inode
);
5850 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5851 rpc_restart_call_prepare(task
);
5854 spin_lock(&lo
->plh_inode
->i_lock
);
5855 if (task
->tk_status
== 0) {
5856 if (lrp
->res
.lrs_present
) {
5857 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
5859 BUG_ON(!list_empty(&lo
->plh_segs
));
5861 lo
->plh_block_lgets
--;
5862 spin_unlock(&lo
->plh_inode
->i_lock
);
5863 dprintk("<-- %s\n", __func__
);
5866 static void nfs4_layoutreturn_release(void *calldata
)
5868 struct nfs4_layoutreturn
*lrp
= calldata
;
5870 dprintk("--> %s\n", __func__
);
5871 put_layout_hdr(lrp
->args
.layout
);
5873 dprintk("<-- %s\n", __func__
);
5876 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
5877 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
5878 .rpc_call_done
= nfs4_layoutreturn_done
,
5879 .rpc_release
= nfs4_layoutreturn_release
,
5882 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
5884 struct rpc_task
*task
;
5885 struct rpc_message msg
= {
5886 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
5887 .rpc_argp
= &lrp
->args
,
5888 .rpc_resp
= &lrp
->res
,
5890 struct rpc_task_setup task_setup_data
= {
5891 .rpc_client
= lrp
->clp
->cl_rpcclient
,
5892 .rpc_message
= &msg
,
5893 .callback_ops
= &nfs4_layoutreturn_call_ops
,
5894 .callback_data
= lrp
,
5898 dprintk("--> %s\n", __func__
);
5899 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
5900 task
= rpc_run_task(&task_setup_data
);
5902 return PTR_ERR(task
);
5903 status
= task
->tk_status
;
5904 dprintk("<-- %s status=%d\n", __func__
, status
);
5910 * Retrieve the list of Data Server devices from the MDS.
5912 static int _nfs4_getdevicelist(struct nfs_server
*server
,
5913 const struct nfs_fh
*fh
,
5914 struct pnfs_devicelist
*devlist
)
5916 struct nfs4_getdevicelist_args args
= {
5918 .layoutclass
= server
->pnfs_curr_ld
->id
,
5920 struct nfs4_getdevicelist_res res
= {
5923 struct rpc_message msg
= {
5924 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
5930 dprintk("--> %s\n", __func__
);
5931 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
5933 dprintk("<-- %s status=%d\n", __func__
, status
);
5937 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
5938 const struct nfs_fh
*fh
,
5939 struct pnfs_devicelist
*devlist
)
5941 struct nfs4_exception exception
= { };
5945 err
= nfs4_handle_exception(server
,
5946 _nfs4_getdevicelist(server
, fh
, devlist
),
5948 } while (exception
.retry
);
5950 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
5951 err
, devlist
->num_devs
);
5955 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
5958 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5960 struct nfs4_getdeviceinfo_args args
= {
5963 struct nfs4_getdeviceinfo_res res
= {
5966 struct rpc_message msg
= {
5967 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
5973 dprintk("--> %s\n", __func__
);
5974 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5975 dprintk("<-- %s status=%d\n", __func__
, status
);
5980 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5982 struct nfs4_exception exception
= { };
5986 err
= nfs4_handle_exception(server
,
5987 _nfs4_proc_getdeviceinfo(server
, pdev
),
5989 } while (exception
.retry
);
5992 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
5994 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
5996 struct nfs4_layoutcommit_data
*data
= calldata
;
5997 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
5999 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
6000 &data
->res
.seq_res
, task
))
6002 rpc_call_start(task
);
6006 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6008 struct nfs4_layoutcommit_data
*data
= calldata
;
6009 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6011 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6014 switch (task
->tk_status
) { /* Just ignore these failures */
6015 case NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6016 case NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6017 case NFS4ERR_BADLAYOUT
: /* no layout */
6018 case NFS4ERR_GRACE
: /* loca_recalim always false */
6019 task
->tk_status
= 0;
6022 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6023 rpc_restart_call_prepare(task
);
6027 if (task
->tk_status
== 0)
6028 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6032 static void nfs4_layoutcommit_release(void *calldata
)
6034 struct nfs4_layoutcommit_data
*data
= calldata
;
6035 struct pnfs_layout_segment
*lseg
, *tmp
;
6036 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
6038 pnfs_cleanup_layoutcommit(data
);
6039 /* Matched by references in pnfs_set_layoutcommit */
6040 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
6041 list_del_init(&lseg
->pls_lc_list
);
6042 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
6047 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
6048 smp_mb__after_clear_bit();
6049 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
6051 put_rpccred(data
->cred
);
6055 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6056 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6057 .rpc_call_done
= nfs4_layoutcommit_done
,
6058 .rpc_release
= nfs4_layoutcommit_release
,
6062 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6064 struct rpc_message msg
= {
6065 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6066 .rpc_argp
= &data
->args
,
6067 .rpc_resp
= &data
->res
,
6068 .rpc_cred
= data
->cred
,
6070 struct rpc_task_setup task_setup_data
= {
6071 .task
= &data
->task
,
6072 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6073 .rpc_message
= &msg
,
6074 .callback_ops
= &nfs4_layoutcommit_ops
,
6075 .callback_data
= data
,
6076 .flags
= RPC_TASK_ASYNC
,
6078 struct rpc_task
*task
;
6081 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6082 "lbw: %llu inode %lu\n",
6083 data
->task
.tk_pid
, sync
,
6084 data
->args
.lastbytewritten
,
6085 data
->args
.inode
->i_ino
);
6087 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6088 task
= rpc_run_task(&task_setup_data
);
6090 return PTR_ERR(task
);
6093 status
= nfs4_wait_for_completion_rpc_task(task
);
6096 status
= task
->tk_status
;
6098 dprintk("%s: status %d\n", __func__
, status
);
6104 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6105 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6107 struct nfs41_secinfo_no_name_args args
= {
6108 .style
= SECINFO_STYLE_CURRENT_FH
,
6110 struct nfs4_secinfo_res res
= {
6113 struct rpc_message msg
= {
6114 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6118 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6122 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6123 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6125 struct nfs4_exception exception
= { };
6128 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6131 case -NFS4ERR_WRONGSEC
:
6132 case -NFS4ERR_NOTSUPP
:
6135 err
= nfs4_handle_exception(server
, err
, &exception
);
6137 } while (exception
.retry
);
6142 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6143 struct nfs_fsinfo
*info
)
6147 rpc_authflavor_t flavor
;
6148 struct nfs4_secinfo_flavors
*flavors
;
6150 page
= alloc_page(GFP_KERNEL
);
6156 flavors
= page_address(page
);
6157 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6160 * Fall back on "guess and check" method if
6161 * the server doesn't support SECINFO_NO_NAME
6163 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6164 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6170 flavor
= nfs_find_best_sec(flavors
);
6172 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6182 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6185 struct nfs41_test_stateid_args args
= {
6188 struct nfs41_test_stateid_res res
;
6189 struct rpc_message msg
= {
6190 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6195 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6196 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6198 if (status
== NFS_OK
)
6203 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6205 struct nfs4_exception exception
= { };
6208 err
= nfs4_handle_exception(server
,
6209 _nfs41_test_stateid(server
, stateid
),
6211 } while (exception
.retry
);
6215 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6217 struct nfs41_free_stateid_args args
= {
6220 struct nfs41_free_stateid_res res
;
6221 struct rpc_message msg
= {
6222 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6227 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6228 return nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6231 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6233 struct nfs4_exception exception
= { };
6236 err
= nfs4_handle_exception(server
,
6237 _nfs4_free_stateid(server
, stateid
),
6239 } while (exception
.retry
);
6242 #endif /* CONFIG_NFS_V4_1 */
6244 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6245 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6246 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6247 .recover_open
= nfs4_open_reclaim
,
6248 .recover_lock
= nfs4_lock_reclaim
,
6249 .establish_clid
= nfs4_init_clientid
,
6250 .get_clid_cred
= nfs4_get_setclientid_cred
,
6253 #if defined(CONFIG_NFS_V4_1)
6254 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6255 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6256 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6257 .recover_open
= nfs4_open_reclaim
,
6258 .recover_lock
= nfs4_lock_reclaim
,
6259 .establish_clid
= nfs41_init_clientid
,
6260 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6261 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6263 #endif /* CONFIG_NFS_V4_1 */
6265 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6266 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6267 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6268 .recover_open
= nfs4_open_expired
,
6269 .recover_lock
= nfs4_lock_expired
,
6270 .establish_clid
= nfs4_init_clientid
,
6271 .get_clid_cred
= nfs4_get_setclientid_cred
,
6274 #if defined(CONFIG_NFS_V4_1)
6275 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6276 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6277 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6278 .recover_open
= nfs41_open_expired
,
6279 .recover_lock
= nfs41_lock_expired
,
6280 .establish_clid
= nfs41_init_clientid
,
6281 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6283 #endif /* CONFIG_NFS_V4_1 */
6285 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6286 .sched_state_renewal
= nfs4_proc_async_renew
,
6287 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6288 .renew_lease
= nfs4_proc_renew
,
6291 #if defined(CONFIG_NFS_V4_1)
6292 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6293 .sched_state_renewal
= nfs41_proc_async_sequence
,
6294 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6295 .renew_lease
= nfs4_proc_sequence
,
6299 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6301 .call_sync
= _nfs4_call_sync
,
6302 .validate_stateid
= nfs4_validate_delegation_stateid
,
6303 .find_root_sec
= nfs4_find_root_sec
,
6304 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6305 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6306 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6309 #if defined(CONFIG_NFS_V4_1)
6310 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6312 .call_sync
= _nfs4_call_sync_session
,
6313 .validate_stateid
= nfs41_validate_delegation_stateid
,
6314 .find_root_sec
= nfs41_find_root_sec
,
6315 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6316 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6317 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6321 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6322 [0] = &nfs_v4_0_minor_ops
,
6323 #if defined(CONFIG_NFS_V4_1)
6324 [1] = &nfs_v4_1_minor_ops
,
6328 static const struct inode_operations nfs4_file_inode_operations
= {
6329 .permission
= nfs_permission
,
6330 .getattr
= nfs_getattr
,
6331 .setattr
= nfs_setattr
,
6332 .getxattr
= generic_getxattr
,
6333 .setxattr
= generic_setxattr
,
6334 .listxattr
= generic_listxattr
,
6335 .removexattr
= generic_removexattr
,
6338 const struct nfs_rpc_ops nfs_v4_clientops
= {
6339 .version
= 4, /* protocol version */
6340 .dentry_ops
= &nfs4_dentry_operations
,
6341 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6342 .file_inode_ops
= &nfs4_file_inode_operations
,
6343 .file_ops
= &nfs4_file_operations
,
6344 .getroot
= nfs4_proc_get_root
,
6345 .getattr
= nfs4_proc_getattr
,
6346 .setattr
= nfs4_proc_setattr
,
6347 .lookup
= nfs4_proc_lookup
,
6348 .access
= nfs4_proc_access
,
6349 .readlink
= nfs4_proc_readlink
,
6350 .create
= nfs4_proc_create
,
6351 .remove
= nfs4_proc_remove
,
6352 .unlink_setup
= nfs4_proc_unlink_setup
,
6353 .unlink_done
= nfs4_proc_unlink_done
,
6354 .rename
= nfs4_proc_rename
,
6355 .rename_setup
= nfs4_proc_rename_setup
,
6356 .rename_done
= nfs4_proc_rename_done
,
6357 .link
= nfs4_proc_link
,
6358 .symlink
= nfs4_proc_symlink
,
6359 .mkdir
= nfs4_proc_mkdir
,
6360 .rmdir
= nfs4_proc_remove
,
6361 .readdir
= nfs4_proc_readdir
,
6362 .mknod
= nfs4_proc_mknod
,
6363 .statfs
= nfs4_proc_statfs
,
6364 .fsinfo
= nfs4_proc_fsinfo
,
6365 .pathconf
= nfs4_proc_pathconf
,
6366 .set_capabilities
= nfs4_server_capabilities
,
6367 .decode_dirent
= nfs4_decode_dirent
,
6368 .read_setup
= nfs4_proc_read_setup
,
6369 .read_done
= nfs4_read_done
,
6370 .write_setup
= nfs4_proc_write_setup
,
6371 .write_done
= nfs4_write_done
,
6372 .commit_setup
= nfs4_proc_commit_setup
,
6373 .commit_done
= nfs4_commit_done
,
6374 .lock
= nfs4_proc_lock
,
6375 .clear_acl_cache
= nfs4_zap_acl_attr
,
6376 .close_context
= nfs4_close_context
,
6377 .open_context
= nfs4_atomic_open
,
6378 .init_client
= nfs4_init_client
,
6379 .secinfo
= nfs4_proc_secinfo
,
6382 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6383 .prefix
= XATTR_NAME_NFSV4_ACL
,
6384 .list
= nfs4_xattr_list_nfs4_acl
,
6385 .get
= nfs4_xattr_get_nfs4_acl
,
6386 .set
= nfs4_xattr_set_nfs4_acl
,
6389 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6390 &nfs4_xattr_nfs4_acl_handler
,