4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/nfs_idmap.h>
55 #include <linux/sunrpc/bc_xprt.h>
56 #include <linux/xattr.h>
57 #include <linux/utsname.h>
58 #include <linux/freezer.h>
61 #include "delegation.h"
68 #define NFSDBG_FACILITY NFSDBG_PROC
70 #define NFS4_POLL_RETRY_MIN (HZ/10)
71 #define NFS4_POLL_RETRY_MAX (15*HZ)
73 #define NFS4_MAX_LOOP_ON_RECOVER (10)
76 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
77 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
78 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
79 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
80 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
81 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*);
82 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
83 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
84 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
85 struct nfs4_state
*state
);
86 #ifdef CONFIG_NFS_V4_1
87 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*);
88 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*);
90 /* Prevent leaks of NFSv4 errors into userland */
91 static int nfs4_map_errors(int err
)
96 case -NFS4ERR_RESOURCE
:
98 case -NFS4ERR_WRONGSEC
:
100 case -NFS4ERR_BADOWNER
:
101 case -NFS4ERR_BADNAME
:
103 case -NFS4ERR_SHARE_DENIED
:
105 case -NFS4ERR_MINOR_VERS_MISMATCH
:
106 return -EPROTONOSUPPORT
;
107 case -NFS4ERR_ACCESS
:
110 dprintk("%s could not handle NFSv4 error %d\n",
118 * This is our standard bitmap for GETATTR requests.
120 const u32 nfs4_fattr_bitmap
[3] = {
122 | FATTR4_WORD0_CHANGE
125 | FATTR4_WORD0_FILEID
,
127 | FATTR4_WORD1_NUMLINKS
129 | FATTR4_WORD1_OWNER_GROUP
130 | FATTR4_WORD1_RAWDEV
131 | FATTR4_WORD1_SPACE_USED
132 | FATTR4_WORD1_TIME_ACCESS
133 | FATTR4_WORD1_TIME_METADATA
134 | FATTR4_WORD1_TIME_MODIFY
137 static const u32 nfs4_pnfs_open_bitmap
[3] = {
139 | FATTR4_WORD0_CHANGE
142 | FATTR4_WORD0_FILEID
,
144 | FATTR4_WORD1_NUMLINKS
146 | FATTR4_WORD1_OWNER_GROUP
147 | FATTR4_WORD1_RAWDEV
148 | FATTR4_WORD1_SPACE_USED
149 | FATTR4_WORD1_TIME_ACCESS
150 | FATTR4_WORD1_TIME_METADATA
151 | FATTR4_WORD1_TIME_MODIFY
,
152 FATTR4_WORD2_MDSTHRESHOLD
155 static const u32 nfs4_open_noattr_bitmap
[3] = {
157 | FATTR4_WORD0_CHANGE
158 | FATTR4_WORD0_FILEID
,
161 const u32 nfs4_statfs_bitmap
[2] = {
162 FATTR4_WORD0_FILES_AVAIL
163 | FATTR4_WORD0_FILES_FREE
164 | FATTR4_WORD0_FILES_TOTAL
,
165 FATTR4_WORD1_SPACE_AVAIL
166 | FATTR4_WORD1_SPACE_FREE
167 | FATTR4_WORD1_SPACE_TOTAL
170 const u32 nfs4_pathconf_bitmap
[2] = {
172 | FATTR4_WORD0_MAXNAME
,
176 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
177 | FATTR4_WORD0_MAXREAD
178 | FATTR4_WORD0_MAXWRITE
179 | FATTR4_WORD0_LEASE_TIME
,
180 FATTR4_WORD1_TIME_DELTA
181 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
182 FATTR4_WORD2_LAYOUT_BLKSIZE
185 const u32 nfs4_fs_locations_bitmap
[2] = {
187 | FATTR4_WORD0_CHANGE
190 | FATTR4_WORD0_FILEID
191 | FATTR4_WORD0_FS_LOCATIONS
,
193 | FATTR4_WORD1_NUMLINKS
195 | FATTR4_WORD1_OWNER_GROUP
196 | FATTR4_WORD1_RAWDEV
197 | FATTR4_WORD1_SPACE_USED
198 | FATTR4_WORD1_TIME_ACCESS
199 | FATTR4_WORD1_TIME_METADATA
200 | FATTR4_WORD1_TIME_MODIFY
201 | FATTR4_WORD1_MOUNTED_ON_FILEID
204 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
205 struct nfs4_readdir_arg
*readdir
)
209 BUG_ON(readdir
->count
< 80);
211 readdir
->cookie
= cookie
;
212 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
217 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
222 * NFSv4 servers do not return entries for '.' and '..'
223 * Therefore, we fake these entries here. We let '.'
224 * have cookie 0 and '..' have cookie 1. Note that
225 * when talking to the server, we always send cookie 0
228 start
= p
= kmap_atomic(*readdir
->pages
);
231 *p
++ = xdr_one
; /* next */
232 *p
++ = xdr_zero
; /* cookie, first word */
233 *p
++ = xdr_one
; /* cookie, second word */
234 *p
++ = xdr_one
; /* entry len */
235 memcpy(p
, ".\0\0\0", 4); /* entry */
237 *p
++ = xdr_one
; /* bitmap length */
238 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
239 *p
++ = htonl(8); /* attribute buffer length */
240 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
243 *p
++ = xdr_one
; /* next */
244 *p
++ = xdr_zero
; /* cookie, first word */
245 *p
++ = xdr_two
; /* cookie, second word */
246 *p
++ = xdr_two
; /* entry len */
247 memcpy(p
, "..\0\0", 4); /* entry */
249 *p
++ = xdr_one
; /* bitmap length */
250 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
251 *p
++ = htonl(8); /* attribute buffer length */
252 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
254 readdir
->pgbase
= (char *)p
- (char *)start
;
255 readdir
->count
-= readdir
->pgbase
;
256 kunmap_atomic(start
);
259 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
265 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
266 nfs_wait_bit_killable
, TASK_KILLABLE
);
270 if (clp
->cl_cons_state
< 0)
271 return clp
->cl_cons_state
;
275 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
282 *timeout
= NFS4_POLL_RETRY_MIN
;
283 if (*timeout
> NFS4_POLL_RETRY_MAX
)
284 *timeout
= NFS4_POLL_RETRY_MAX
;
285 freezable_schedule_timeout_killable(*timeout
);
286 if (fatal_signal_pending(current
))
292 /* This is the error handling routine for processes that are allowed
295 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
297 struct nfs_client
*clp
= server
->nfs_client
;
298 struct nfs4_state
*state
= exception
->state
;
299 struct inode
*inode
= exception
->inode
;
302 exception
->retry
= 0;
306 case -NFS4ERR_OPENMODE
:
307 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
308 nfs4_inode_return_delegation(inode
);
309 exception
->retry
= 1;
314 nfs4_schedule_stateid_recovery(server
, state
);
315 goto wait_on_recovery
;
316 case -NFS4ERR_DELEG_REVOKED
:
317 case -NFS4ERR_ADMIN_REVOKED
:
318 case -NFS4ERR_BAD_STATEID
:
321 nfs_remove_bad_delegation(state
->inode
);
322 nfs4_schedule_stateid_recovery(server
, state
);
323 goto wait_on_recovery
;
324 case -NFS4ERR_EXPIRED
:
326 nfs4_schedule_stateid_recovery(server
, state
);
327 case -NFS4ERR_STALE_STATEID
:
328 case -NFS4ERR_STALE_CLIENTID
:
329 nfs4_schedule_lease_recovery(clp
);
330 goto wait_on_recovery
;
331 #if defined(CONFIG_NFS_V4_1)
332 case -NFS4ERR_BADSESSION
:
333 case -NFS4ERR_BADSLOT
:
334 case -NFS4ERR_BAD_HIGH_SLOT
:
335 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
336 case -NFS4ERR_DEADSESSION
:
337 case -NFS4ERR_SEQ_FALSE_RETRY
:
338 case -NFS4ERR_SEQ_MISORDERED
:
339 dprintk("%s ERROR: %d Reset session\n", __func__
,
341 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
342 exception
->retry
= 1;
344 #endif /* defined(CONFIG_NFS_V4_1) */
345 case -NFS4ERR_FILE_OPEN
:
346 if (exception
->timeout
> HZ
) {
347 /* We have retried a decent amount, time to
356 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
359 case -NFS4ERR_RETRY_UNCACHED_REP
:
360 case -NFS4ERR_OLD_STATEID
:
361 exception
->retry
= 1;
363 case -NFS4ERR_BADOWNER
:
364 /* The following works around a Linux server bug! */
365 case -NFS4ERR_BADNAME
:
366 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
367 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
368 exception
->retry
= 1;
369 printk(KERN_WARNING
"NFS: v4 server %s "
370 "does not accept raw "
372 "Reenabling the idmapper.\n",
373 server
->nfs_client
->cl_hostname
);
376 /* We failed to handle the error */
377 return nfs4_map_errors(ret
);
379 ret
= nfs4_wait_clnt_recover(clp
);
381 exception
->retry
= 1;
386 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
388 spin_lock(&clp
->cl_lock
);
389 if (time_before(clp
->cl_last_renewal
,timestamp
))
390 clp
->cl_last_renewal
= timestamp
;
391 spin_unlock(&clp
->cl_lock
);
394 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
396 do_renew_lease(server
->nfs_client
, timestamp
);
399 #if defined(CONFIG_NFS_V4_1)
402 * nfs4_free_slot - free a slot and efficiently update slot table.
404 * freeing a slot is trivially done by clearing its respective bit
406 * If the freed slotid equals highest_used_slotid we want to update it
407 * so that the server would be able to size down the slot table if needed,
408 * otherwise we know that the highest_used_slotid is still in use.
409 * When updating highest_used_slotid there may be "holes" in the bitmap
410 * so we need to scan down from highest_used_slotid to 0 looking for the now
411 * highest slotid in use.
412 * If none found, highest_used_slotid is set to NFS4_NO_SLOT.
414 * Must be called while holding tbl->slot_tbl_lock
417 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u32 slotid
)
419 BUG_ON(slotid
>= NFS4_MAX_SLOT_TABLE
);
420 /* clear used bit in bitmap */
421 __clear_bit(slotid
, tbl
->used_slots
);
423 /* update highest_used_slotid when it is freed */
424 if (slotid
== tbl
->highest_used_slotid
) {
425 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
426 if (slotid
< tbl
->max_slots
)
427 tbl
->highest_used_slotid
= slotid
;
429 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
431 dprintk("%s: slotid %u highest_used_slotid %d\n", __func__
,
432 slotid
, tbl
->highest_used_slotid
);
435 bool nfs4_set_task_privileged(struct rpc_task
*task
, void *dummy
)
437 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
442 * Signal state manager thread if session fore channel is drained
444 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
446 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
447 rpc_wake_up_first(&ses
->fc_slot_table
.slot_tbl_waitq
,
448 nfs4_set_task_privileged
, NULL
);
452 if (ses
->fc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
455 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
456 complete(&ses
->fc_slot_table
.complete
);
460 * Signal state manager thread if session back channel is drained
462 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
464 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
465 ses
->bc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
467 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
468 complete(&ses
->bc_slot_table
.complete
);
471 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
473 struct nfs4_slot_table
*tbl
;
475 tbl
= &res
->sr_session
->fc_slot_table
;
477 /* just wake up the next guy waiting since
478 * we may have not consumed a slot after all */
479 dprintk("%s: No slot\n", __func__
);
483 spin_lock(&tbl
->slot_tbl_lock
);
484 nfs4_free_slot(tbl
, res
->sr_slot
- tbl
->slots
);
485 nfs4_check_drain_fc_complete(res
->sr_session
);
486 spin_unlock(&tbl
->slot_tbl_lock
);
490 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
492 unsigned long timestamp
;
493 struct nfs_client
*clp
;
496 * sr_status remains 1 if an RPC level error occurred. The server
497 * may or may not have processed the sequence operation..
498 * Proceed as if the server received and processed the sequence
501 if (res
->sr_status
== 1)
502 res
->sr_status
= NFS_OK
;
504 /* don't increment the sequence number if the task wasn't sent */
505 if (!RPC_WAS_SENT(task
))
508 /* Check the SEQUENCE operation status */
509 switch (res
->sr_status
) {
511 /* Update the slot's sequence and clientid lease timer */
512 ++res
->sr_slot
->seq_nr
;
513 timestamp
= res
->sr_renewal_time
;
514 clp
= res
->sr_session
->clp
;
515 do_renew_lease(clp
, timestamp
);
516 /* Check sequence flags */
517 if (res
->sr_status_flags
!= 0)
518 nfs4_schedule_lease_recovery(clp
);
521 /* The server detected a resend of the RPC call and
522 * returned NFS4ERR_DELAY as per Section 2.10.6.2
525 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
527 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
528 res
->sr_slot
->seq_nr
);
531 /* Just update the slot sequence no. */
532 ++res
->sr_slot
->seq_nr
;
535 /* The session may be reset by one of the error handlers. */
536 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
537 nfs41_sequence_free_slot(res
);
540 if (!rpc_restart_call(task
))
542 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
546 static int nfs4_sequence_done(struct rpc_task
*task
,
547 struct nfs4_sequence_res
*res
)
549 if (res
->sr_session
== NULL
)
551 return nfs41_sequence_done(task
, res
);
555 * nfs4_find_slot - efficiently look for a free slot
557 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
558 * If found, we mark the slot as used, update the highest_used_slotid,
559 * and respectively set up the sequence operation args.
560 * The slot number is returned if found, or NFS4_NO_SLOT otherwise.
562 * Note: must be called with under the slot_tbl_lock.
565 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
568 u32 ret_id
= NFS4_NO_SLOT
;
570 dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n",
571 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
573 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
574 if (slotid
>= tbl
->max_slots
)
576 __set_bit(slotid
, tbl
->used_slots
);
577 if (slotid
> tbl
->highest_used_slotid
||
578 tbl
->highest_used_slotid
== NFS4_NO_SLOT
)
579 tbl
->highest_used_slotid
= slotid
;
582 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
583 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
587 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
588 struct nfs4_sequence_res
*res
, int cache_reply
)
590 args
->sa_session
= NULL
;
591 args
->sa_cache_this
= 0;
593 args
->sa_cache_this
= 1;
594 res
->sr_session
= NULL
;
598 int nfs41_setup_sequence(struct nfs4_session
*session
,
599 struct nfs4_sequence_args
*args
,
600 struct nfs4_sequence_res
*res
,
601 struct rpc_task
*task
)
603 struct nfs4_slot
*slot
;
604 struct nfs4_slot_table
*tbl
;
607 dprintk("--> %s\n", __func__
);
608 /* slot already allocated? */
609 if (res
->sr_slot
!= NULL
)
612 tbl
= &session
->fc_slot_table
;
614 spin_lock(&tbl
->slot_tbl_lock
);
615 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
616 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
617 /* The state manager will wait until the slot table is empty */
618 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
619 spin_unlock(&tbl
->slot_tbl_lock
);
620 dprintk("%s session is draining\n", __func__
);
624 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
625 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
626 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
627 spin_unlock(&tbl
->slot_tbl_lock
);
628 dprintk("%s enforce FIFO order\n", __func__
);
632 slotid
= nfs4_find_slot(tbl
);
633 if (slotid
== NFS4_NO_SLOT
) {
634 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
635 spin_unlock(&tbl
->slot_tbl_lock
);
636 dprintk("<-- %s: no free slots\n", __func__
);
639 spin_unlock(&tbl
->slot_tbl_lock
);
641 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
642 slot
= tbl
->slots
+ slotid
;
643 args
->sa_session
= session
;
644 args
->sa_slotid
= slotid
;
646 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
648 res
->sr_session
= session
;
650 res
->sr_renewal_time
= jiffies
;
651 res
->sr_status_flags
= 0;
653 * sr_status is only set in decode_sequence, and so will remain
654 * set to 1 if an rpc level failure occurs.
659 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
661 int nfs4_setup_sequence(const struct nfs_server
*server
,
662 struct nfs4_sequence_args
*args
,
663 struct nfs4_sequence_res
*res
,
664 struct rpc_task
*task
)
666 struct nfs4_session
*session
= nfs4_get_session(server
);
672 dprintk("--> %s clp %p session %p sr_slot %td\n",
673 __func__
, session
->clp
, session
, res
->sr_slot
?
674 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
676 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
678 dprintk("<-- %s status=%d\n", __func__
, ret
);
682 struct nfs41_call_sync_data
{
683 const struct nfs_server
*seq_server
;
684 struct nfs4_sequence_args
*seq_args
;
685 struct nfs4_sequence_res
*seq_res
;
688 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
690 struct nfs41_call_sync_data
*data
= calldata
;
692 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
694 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
695 data
->seq_res
, task
))
697 rpc_call_start(task
);
700 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
702 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
703 nfs41_call_sync_prepare(task
, calldata
);
706 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
708 struct nfs41_call_sync_data
*data
= calldata
;
710 nfs41_sequence_done(task
, data
->seq_res
);
713 static const struct rpc_call_ops nfs41_call_sync_ops
= {
714 .rpc_call_prepare
= nfs41_call_sync_prepare
,
715 .rpc_call_done
= nfs41_call_sync_done
,
718 static const struct rpc_call_ops nfs41_call_priv_sync_ops
= {
719 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
720 .rpc_call_done
= nfs41_call_sync_done
,
723 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
724 struct nfs_server
*server
,
725 struct rpc_message
*msg
,
726 struct nfs4_sequence_args
*args
,
727 struct nfs4_sequence_res
*res
,
731 struct rpc_task
*task
;
732 struct nfs41_call_sync_data data
= {
733 .seq_server
= server
,
737 struct rpc_task_setup task_setup
= {
740 .callback_ops
= &nfs41_call_sync_ops
,
741 .callback_data
= &data
745 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
746 task
= rpc_run_task(&task_setup
);
750 ret
= task
->tk_status
;
756 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
757 struct nfs_server
*server
,
758 struct rpc_message
*msg
,
759 struct nfs4_sequence_args
*args
,
760 struct nfs4_sequence_res
*res
,
763 nfs41_init_sequence(args
, res
, cache_reply
);
764 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, 0);
769 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
770 struct nfs4_sequence_res
*res
, int cache_reply
)
774 static int nfs4_sequence_done(struct rpc_task
*task
,
775 struct nfs4_sequence_res
*res
)
779 #endif /* CONFIG_NFS_V4_1 */
781 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
782 struct nfs_server
*server
,
783 struct rpc_message
*msg
,
784 struct nfs4_sequence_args
*args
,
785 struct nfs4_sequence_res
*res
,
788 nfs41_init_sequence(args
, res
, cache_reply
);
789 return rpc_call_sync(clnt
, msg
, 0);
793 int nfs4_call_sync(struct rpc_clnt
*clnt
,
794 struct nfs_server
*server
,
795 struct rpc_message
*msg
,
796 struct nfs4_sequence_args
*args
,
797 struct nfs4_sequence_res
*res
,
800 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
801 args
, res
, cache_reply
);
804 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
806 struct nfs_inode
*nfsi
= NFS_I(dir
);
808 spin_lock(&dir
->i_lock
);
809 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
810 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
811 nfs_force_lookup_revalidate(dir
);
812 dir
->i_version
= cinfo
->after
;
813 spin_unlock(&dir
->i_lock
);
816 struct nfs4_opendata
{
818 struct nfs_openargs o_arg
;
819 struct nfs_openres o_res
;
820 struct nfs_open_confirmargs c_arg
;
821 struct nfs_open_confirmres c_res
;
822 struct nfs4_string owner_name
;
823 struct nfs4_string group_name
;
824 struct nfs_fattr f_attr
;
826 struct dentry
*dentry
;
827 struct nfs4_state_owner
*owner
;
828 struct nfs4_state
*state
;
830 unsigned long timestamp
;
831 unsigned int rpc_done
: 1;
837 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
839 p
->o_res
.f_attr
= &p
->f_attr
;
840 p
->o_res
.seqid
= p
->o_arg
.seqid
;
841 p
->c_res
.seqid
= p
->c_arg
.seqid
;
842 p
->o_res
.server
= p
->o_arg
.server
;
843 p
->o_res
.access_request
= p
->o_arg
.access
;
844 nfs_fattr_init(&p
->f_attr
);
845 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
848 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
849 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
850 const struct iattr
*attrs
,
853 struct dentry
*parent
= dget_parent(dentry
);
854 struct inode
*dir
= parent
->d_inode
;
855 struct nfs_server
*server
= NFS_SERVER(dir
);
856 struct nfs4_opendata
*p
;
858 p
= kzalloc(sizeof(*p
), gfp_mask
);
861 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
862 if (p
->o_arg
.seqid
== NULL
)
864 nfs_sb_active(dentry
->d_sb
);
865 p
->dentry
= dget(dentry
);
868 atomic_inc(&sp
->so_count
);
869 p
->o_arg
.fh
= NFS_FH(dir
);
870 p
->o_arg
.open_flags
= flags
;
871 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
872 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
873 * will return permission denied for all bits until close */
874 if (!(flags
& O_EXCL
)) {
875 /* ask server to check for all possible rights as results
877 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
878 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
880 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
881 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
882 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
883 p
->o_arg
.name
= &dentry
->d_name
;
884 p
->o_arg
.server
= server
;
885 p
->o_arg
.bitmask
= server
->attr_bitmask
;
886 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
887 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
888 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
891 p
->o_arg
.u
.attrs
= &p
->attrs
;
892 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
895 verf
[1] = current
->pid
;
896 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
897 sizeof(p
->o_arg
.u
.verifier
.data
));
899 p
->c_arg
.fh
= &p
->o_res
.fh
;
900 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
901 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
902 nfs4_init_opendata_res(p
);
912 static void nfs4_opendata_free(struct kref
*kref
)
914 struct nfs4_opendata
*p
= container_of(kref
,
915 struct nfs4_opendata
, kref
);
916 struct super_block
*sb
= p
->dentry
->d_sb
;
918 nfs_free_seqid(p
->o_arg
.seqid
);
919 if (p
->state
!= NULL
)
920 nfs4_put_open_state(p
->state
);
921 nfs4_put_state_owner(p
->owner
);
925 nfs_fattr_free_names(&p
->f_attr
);
929 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
932 kref_put(&p
->kref
, nfs4_opendata_free
);
935 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
939 ret
= rpc_wait_for_completion_task(task
);
943 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
947 if (open_mode
& (O_EXCL
|O_TRUNC
))
949 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
951 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
952 && state
->n_rdonly
!= 0;
955 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
956 && state
->n_wronly
!= 0;
958 case FMODE_READ
|FMODE_WRITE
:
959 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
960 && state
->n_rdwr
!= 0;
966 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
968 if (delegation
== NULL
)
970 if ((delegation
->type
& fmode
) != fmode
)
972 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
974 nfs_mark_delegation_referenced(delegation
);
978 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
987 case FMODE_READ
|FMODE_WRITE
:
990 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
993 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
995 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
996 nfs4_stateid_copy(&state
->stateid
, stateid
);
997 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1000 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1003 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1005 case FMODE_READ
|FMODE_WRITE
:
1006 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1010 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1012 write_seqlock(&state
->seqlock
);
1013 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
1014 write_sequnlock(&state
->seqlock
);
1017 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1020 * Protect the call to nfs4_state_set_mode_locked and
1021 * serialise the stateid update
1023 write_seqlock(&state
->seqlock
);
1024 if (deleg_stateid
!= NULL
) {
1025 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1026 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1028 if (open_stateid
!= NULL
)
1029 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1030 write_sequnlock(&state
->seqlock
);
1031 spin_lock(&state
->owner
->so_lock
);
1032 update_open_stateflags(state
, fmode
);
1033 spin_unlock(&state
->owner
->so_lock
);
1036 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1038 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1039 struct nfs_delegation
*deleg_cur
;
1042 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1045 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1046 if (deleg_cur
== NULL
)
1049 spin_lock(&deleg_cur
->lock
);
1050 if (nfsi
->delegation
!= deleg_cur
||
1051 (deleg_cur
->type
& fmode
) != fmode
)
1052 goto no_delegation_unlock
;
1054 if (delegation
== NULL
)
1055 delegation
= &deleg_cur
->stateid
;
1056 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1057 goto no_delegation_unlock
;
1059 nfs_mark_delegation_referenced(deleg_cur
);
1060 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1062 no_delegation_unlock
:
1063 spin_unlock(&deleg_cur
->lock
);
1067 if (!ret
&& open_stateid
!= NULL
) {
1068 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1076 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1078 struct nfs_delegation
*delegation
;
1081 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1082 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1087 nfs4_inode_return_delegation(inode
);
1090 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1092 struct nfs4_state
*state
= opendata
->state
;
1093 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1094 struct nfs_delegation
*delegation
;
1095 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1096 fmode_t fmode
= opendata
->o_arg
.fmode
;
1097 nfs4_stateid stateid
;
1101 if (can_open_cached(state
, fmode
, open_mode
)) {
1102 spin_lock(&state
->owner
->so_lock
);
1103 if (can_open_cached(state
, fmode
, open_mode
)) {
1104 update_open_stateflags(state
, fmode
);
1105 spin_unlock(&state
->owner
->so_lock
);
1106 goto out_return_state
;
1108 spin_unlock(&state
->owner
->so_lock
);
1111 delegation
= rcu_dereference(nfsi
->delegation
);
1112 if (!can_open_delegated(delegation
, fmode
)) {
1116 /* Save the delegation */
1117 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1119 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1124 /* Try to update the stateid using the delegation */
1125 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1126 goto out_return_state
;
1129 return ERR_PTR(ret
);
1131 atomic_inc(&state
->count
);
1136 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1138 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1139 struct nfs_delegation
*delegation
;
1140 int delegation_flags
= 0;
1143 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1145 delegation_flags
= delegation
->flags
;
1147 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1148 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1149 "returning a delegation for "
1150 "OPEN(CLAIM_DELEGATE_CUR)\n",
1152 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1153 nfs_inode_set_delegation(state
->inode
,
1154 data
->owner
->so_cred
,
1157 nfs_inode_reclaim_delegation(state
->inode
,
1158 data
->owner
->so_cred
,
1163 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1164 * and update the nfs4_state.
1166 static struct nfs4_state
*
1167 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1169 struct inode
*inode
= data
->state
->inode
;
1170 struct nfs4_state
*state
= data
->state
;
1173 if (!data
->rpc_done
) {
1174 ret
= data
->rpc_status
;
1179 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1180 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1181 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1185 state
= nfs4_get_open_state(inode
, data
->owner
);
1189 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1193 if (data
->o_res
.delegation_type
!= 0)
1194 nfs4_opendata_check_deleg(data
, state
);
1195 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1200 return ERR_PTR(ret
);
1204 static struct nfs4_state
*
1205 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1207 struct inode
*inode
;
1208 struct nfs4_state
*state
= NULL
;
1211 if (!data
->rpc_done
) {
1212 state
= nfs4_try_open_cached(data
);
1217 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1219 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1220 ret
= PTR_ERR(inode
);
1224 state
= nfs4_get_open_state(inode
, data
->owner
);
1227 if (data
->o_res
.delegation_type
!= 0)
1228 nfs4_opendata_check_deleg(data
, state
);
1229 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1237 return ERR_PTR(ret
);
1240 static struct nfs4_state
*
1241 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1243 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1244 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1245 return _nfs4_opendata_to_nfs4_state(data
);
1248 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1250 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1251 struct nfs_open_context
*ctx
;
1253 spin_lock(&state
->inode
->i_lock
);
1254 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1255 if (ctx
->state
!= state
)
1257 get_nfs_open_context(ctx
);
1258 spin_unlock(&state
->inode
->i_lock
);
1261 spin_unlock(&state
->inode
->i_lock
);
1262 return ERR_PTR(-ENOENT
);
1265 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1267 struct nfs4_opendata
*opendata
;
1269 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1270 if (opendata
== NULL
)
1271 return ERR_PTR(-ENOMEM
);
1272 opendata
->state
= state
;
1273 atomic_inc(&state
->count
);
1277 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1279 struct nfs4_state
*newstate
;
1282 opendata
->o_arg
.open_flags
= 0;
1283 opendata
->o_arg
.fmode
= fmode
;
1284 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1285 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1286 nfs4_init_opendata_res(opendata
);
1287 ret
= _nfs4_recover_proc_open(opendata
);
1290 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1291 if (IS_ERR(newstate
))
1292 return PTR_ERR(newstate
);
1293 nfs4_close_state(newstate
, fmode
);
1298 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1300 struct nfs4_state
*newstate
;
1303 /* memory barrier prior to reading state->n_* */
1304 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1306 if (state
->n_rdwr
!= 0) {
1307 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1308 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1311 if (newstate
!= state
)
1314 if (state
->n_wronly
!= 0) {
1315 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1316 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1319 if (newstate
!= state
)
1322 if (state
->n_rdonly
!= 0) {
1323 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1324 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1327 if (newstate
!= state
)
1331 * We may have performed cached opens for all three recoveries.
1332 * Check if we need to update the current stateid.
1334 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1335 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1336 write_seqlock(&state
->seqlock
);
1337 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1338 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1339 write_sequnlock(&state
->seqlock
);
1346 * reclaim state on the server after a reboot.
1348 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1350 struct nfs_delegation
*delegation
;
1351 struct nfs4_opendata
*opendata
;
1352 fmode_t delegation_type
= 0;
1355 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1356 if (IS_ERR(opendata
))
1357 return PTR_ERR(opendata
);
1358 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1359 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1361 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1362 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1363 delegation_type
= delegation
->type
;
1365 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1366 status
= nfs4_open_recover(opendata
, state
);
1367 nfs4_opendata_put(opendata
);
1371 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1373 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1374 struct nfs4_exception exception
= { };
1377 err
= _nfs4_do_open_reclaim(ctx
, state
);
1378 if (err
!= -NFS4ERR_DELAY
)
1380 nfs4_handle_exception(server
, err
, &exception
);
1381 } while (exception
.retry
);
1385 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1387 struct nfs_open_context
*ctx
;
1390 ctx
= nfs4_state_find_open_context(state
);
1392 return PTR_ERR(ctx
);
1393 ret
= nfs4_do_open_reclaim(ctx
, state
);
1394 put_nfs_open_context(ctx
);
1398 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1400 struct nfs4_opendata
*opendata
;
1403 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1404 if (IS_ERR(opendata
))
1405 return PTR_ERR(opendata
);
1406 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1407 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1408 ret
= nfs4_open_recover(opendata
, state
);
1409 nfs4_opendata_put(opendata
);
1413 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1415 struct nfs4_exception exception
= { };
1416 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1419 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1425 case -NFS4ERR_BADSESSION
:
1426 case -NFS4ERR_BADSLOT
:
1427 case -NFS4ERR_BAD_HIGH_SLOT
:
1428 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1429 case -NFS4ERR_DEADSESSION
:
1430 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1432 case -NFS4ERR_STALE_CLIENTID
:
1433 case -NFS4ERR_STALE_STATEID
:
1434 case -NFS4ERR_EXPIRED
:
1435 /* Don't recall a delegation if it was lost */
1436 nfs4_schedule_lease_recovery(server
->nfs_client
);
1440 * The show must go on: exit, but mark the
1441 * stateid as needing recovery.
1443 case -NFS4ERR_DELEG_REVOKED
:
1444 case -NFS4ERR_ADMIN_REVOKED
:
1445 case -NFS4ERR_BAD_STATEID
:
1446 nfs_inode_find_state_and_recover(state
->inode
,
1448 nfs4_schedule_stateid_recovery(server
, state
);
1451 * User RPCSEC_GSS context has expired.
1452 * We cannot recover this stateid now, so
1453 * skip it and allow recovery thread to
1460 err
= nfs4_handle_exception(server
, err
, &exception
);
1461 } while (exception
.retry
);
1466 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1468 struct nfs4_opendata
*data
= calldata
;
1470 data
->rpc_status
= task
->tk_status
;
1471 if (data
->rpc_status
== 0) {
1472 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1473 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1474 renew_lease(data
->o_res
.server
, data
->timestamp
);
1479 static void nfs4_open_confirm_release(void *calldata
)
1481 struct nfs4_opendata
*data
= calldata
;
1482 struct nfs4_state
*state
= NULL
;
1484 /* If this request hasn't been cancelled, do nothing */
1485 if (data
->cancelled
== 0)
1487 /* In case of error, no cleanup! */
1488 if (!data
->rpc_done
)
1490 state
= nfs4_opendata_to_nfs4_state(data
);
1492 nfs4_close_state(state
, data
->o_arg
.fmode
);
1494 nfs4_opendata_put(data
);
1497 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1498 .rpc_call_done
= nfs4_open_confirm_done
,
1499 .rpc_release
= nfs4_open_confirm_release
,
1503 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1505 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1507 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1508 struct rpc_task
*task
;
1509 struct rpc_message msg
= {
1510 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1511 .rpc_argp
= &data
->c_arg
,
1512 .rpc_resp
= &data
->c_res
,
1513 .rpc_cred
= data
->owner
->so_cred
,
1515 struct rpc_task_setup task_setup_data
= {
1516 .rpc_client
= server
->client
,
1517 .rpc_message
= &msg
,
1518 .callback_ops
= &nfs4_open_confirm_ops
,
1519 .callback_data
= data
,
1520 .workqueue
= nfsiod_workqueue
,
1521 .flags
= RPC_TASK_ASYNC
,
1525 kref_get(&data
->kref
);
1527 data
->rpc_status
= 0;
1528 data
->timestamp
= jiffies
;
1529 task
= rpc_run_task(&task_setup_data
);
1531 return PTR_ERR(task
);
1532 status
= nfs4_wait_for_completion_rpc_task(task
);
1534 data
->cancelled
= 1;
1537 status
= data
->rpc_status
;
1542 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1544 struct nfs4_opendata
*data
= calldata
;
1545 struct nfs4_state_owner
*sp
= data
->owner
;
1547 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1550 * Check if we still need to send an OPEN call, or if we can use
1551 * a delegation instead.
1553 if (data
->state
!= NULL
) {
1554 struct nfs_delegation
*delegation
;
1556 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1559 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1560 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1561 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1562 goto unlock_no_action
;
1565 /* Update client id. */
1566 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1567 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1568 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1569 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1570 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1572 data
->timestamp
= jiffies
;
1573 if (nfs4_setup_sequence(data
->o_arg
.server
,
1574 &data
->o_arg
.seq_args
,
1575 &data
->o_res
.seq_res
, task
))
1577 rpc_call_start(task
);
1582 task
->tk_action
= NULL
;
1586 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1588 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1589 nfs4_open_prepare(task
, calldata
);
1592 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1594 struct nfs4_opendata
*data
= calldata
;
1596 data
->rpc_status
= task
->tk_status
;
1598 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1601 if (task
->tk_status
== 0) {
1602 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1603 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1607 data
->rpc_status
= -ELOOP
;
1610 data
->rpc_status
= -EISDIR
;
1613 data
->rpc_status
= -ENOTDIR
;
1616 renew_lease(data
->o_res
.server
, data
->timestamp
);
1617 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1618 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1623 static void nfs4_open_release(void *calldata
)
1625 struct nfs4_opendata
*data
= calldata
;
1626 struct nfs4_state
*state
= NULL
;
1628 /* If this request hasn't been cancelled, do nothing */
1629 if (data
->cancelled
== 0)
1631 /* In case of error, no cleanup! */
1632 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1634 /* In case we need an open_confirm, no cleanup! */
1635 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1637 state
= nfs4_opendata_to_nfs4_state(data
);
1639 nfs4_close_state(state
, data
->o_arg
.fmode
);
1641 nfs4_opendata_put(data
);
1644 static const struct rpc_call_ops nfs4_open_ops
= {
1645 .rpc_call_prepare
= nfs4_open_prepare
,
1646 .rpc_call_done
= nfs4_open_done
,
1647 .rpc_release
= nfs4_open_release
,
1650 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1651 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1652 .rpc_call_done
= nfs4_open_done
,
1653 .rpc_release
= nfs4_open_release
,
1656 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1658 struct inode
*dir
= data
->dir
->d_inode
;
1659 struct nfs_server
*server
= NFS_SERVER(dir
);
1660 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1661 struct nfs_openres
*o_res
= &data
->o_res
;
1662 struct rpc_task
*task
;
1663 struct rpc_message msg
= {
1664 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1667 .rpc_cred
= data
->owner
->so_cred
,
1669 struct rpc_task_setup task_setup_data
= {
1670 .rpc_client
= server
->client
,
1671 .rpc_message
= &msg
,
1672 .callback_ops
= &nfs4_open_ops
,
1673 .callback_data
= data
,
1674 .workqueue
= nfsiod_workqueue
,
1675 .flags
= RPC_TASK_ASYNC
,
1679 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1680 kref_get(&data
->kref
);
1682 data
->rpc_status
= 0;
1683 data
->cancelled
= 0;
1685 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1686 task
= rpc_run_task(&task_setup_data
);
1688 return PTR_ERR(task
);
1689 status
= nfs4_wait_for_completion_rpc_task(task
);
1691 data
->cancelled
= 1;
1694 status
= data
->rpc_status
;
1700 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1702 struct inode
*dir
= data
->dir
->d_inode
;
1703 struct nfs_openres
*o_res
= &data
->o_res
;
1706 status
= nfs4_run_open_task(data
, 1);
1707 if (status
!= 0 || !data
->rpc_done
)
1710 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1712 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1713 status
= _nfs4_proc_open_confirm(data
);
1721 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1722 struct nfs4_opendata
*opendata
,
1723 struct nfs4_state
*state
, fmode_t fmode
)
1725 struct nfs_access_entry cache
;
1728 /* access call failed or for some reason the server doesn't
1729 * support any access modes -- defer access call until later */
1730 if (opendata
->o_res
.access_supported
== 0)
1734 /* don't check MAY_WRITE - a newly created file may not have
1735 * write mode bits, but POSIX allows the creating process to write */
1736 if (fmode
& FMODE_READ
)
1738 if (fmode
& FMODE_EXEC
)
1742 cache
.jiffies
= jiffies
;
1743 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1744 nfs_access_add_cache(state
->inode
, &cache
);
1746 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1749 /* even though OPEN succeeded, access is denied. Close the file */
1750 nfs4_close_state(state
, fmode
);
1751 return -NFS4ERR_ACCESS
;
1755 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1757 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1759 struct inode
*dir
= data
->dir
->d_inode
;
1760 struct nfs_server
*server
= NFS_SERVER(dir
);
1761 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1762 struct nfs_openres
*o_res
= &data
->o_res
;
1765 status
= nfs4_run_open_task(data
, 0);
1766 if (!data
->rpc_done
)
1769 if (status
== -NFS4ERR_BADNAME
&&
1770 !(o_arg
->open_flags
& O_CREAT
))
1775 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1777 if (o_arg
->open_flags
& O_CREAT
)
1778 update_changeattr(dir
, &o_res
->cinfo
);
1779 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1780 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1781 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1782 status
= _nfs4_proc_open_confirm(data
);
1786 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1787 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1791 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1796 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1797 ret
= nfs4_wait_clnt_recover(clp
);
1800 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1801 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1803 nfs4_schedule_state_manager(clp
);
1809 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1811 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1816 * reclaim state on the server after a network partition.
1817 * Assumes caller holds the appropriate lock
1819 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1821 struct nfs4_opendata
*opendata
;
1824 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1825 if (IS_ERR(opendata
))
1826 return PTR_ERR(opendata
);
1827 ret
= nfs4_open_recover(opendata
, state
);
1829 d_drop(ctx
->dentry
);
1830 nfs4_opendata_put(opendata
);
1834 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1836 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1837 struct nfs4_exception exception
= { };
1841 err
= _nfs4_open_expired(ctx
, state
);
1845 case -NFS4ERR_GRACE
:
1846 case -NFS4ERR_DELAY
:
1847 nfs4_handle_exception(server
, err
, &exception
);
1850 } while (exception
.retry
);
1855 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1857 struct nfs_open_context
*ctx
;
1860 ctx
= nfs4_state_find_open_context(state
);
1862 return PTR_ERR(ctx
);
1863 ret
= nfs4_do_open_expired(ctx
, state
);
1864 put_nfs_open_context(ctx
);
1868 #if defined(CONFIG_NFS_V4_1)
1869 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1871 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1872 nfs4_stateid
*stateid
= &state
->stateid
;
1875 /* If a state reset has been done, test_stateid is unneeded */
1876 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1879 status
= nfs41_test_stateid(server
, stateid
);
1880 if (status
!= NFS_OK
) {
1881 /* Free the stateid unless the server explicitly
1882 * informs us the stateid is unrecognized. */
1883 if (status
!= -NFS4ERR_BAD_STATEID
)
1884 nfs41_free_stateid(server
, stateid
);
1885 nfs_remove_bad_delegation(state
->inode
);
1887 write_seqlock(&state
->seqlock
);
1888 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1889 write_sequnlock(&state
->seqlock
);
1890 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1895 * nfs41_check_open_stateid - possibly free an open stateid
1897 * @state: NFSv4 state for an inode
1899 * Returns NFS_OK if recovery for this stateid is now finished.
1900 * Otherwise a negative NFS4ERR value is returned.
1902 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1904 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1905 nfs4_stateid
*stateid
= &state
->open_stateid
;
1908 /* If a state reset has been done, test_stateid is unneeded */
1909 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1910 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1911 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1912 return -NFS4ERR_BAD_STATEID
;
1914 status
= nfs41_test_stateid(server
, stateid
);
1915 if (status
!= NFS_OK
) {
1916 /* Free the stateid unless the server explicitly
1917 * informs us the stateid is unrecognized. */
1918 if (status
!= -NFS4ERR_BAD_STATEID
)
1919 nfs41_free_stateid(server
, stateid
);
1921 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1922 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1923 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1928 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1932 nfs41_clear_delegation_stateid(state
);
1933 status
= nfs41_check_open_stateid(state
);
1934 if (status
!= NFS_OK
)
1935 status
= nfs4_open_expired(sp
, state
);
1941 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1942 * fields corresponding to attributes that were used to store the verifier.
1943 * Make sure we clobber those fields in the later setattr call
1945 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1947 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1948 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1949 sattr
->ia_valid
|= ATTR_ATIME
;
1951 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1952 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1953 sattr
->ia_valid
|= ATTR_MTIME
;
1957 * Returns a referenced nfs4_state
1959 static int _nfs4_do_open(struct inode
*dir
,
1960 struct dentry
*dentry
,
1963 struct iattr
*sattr
,
1964 struct rpc_cred
*cred
,
1965 struct nfs4_state
**res
,
1966 struct nfs4_threshold
**ctx_th
)
1968 struct nfs4_state_owner
*sp
;
1969 struct nfs4_state
*state
= NULL
;
1970 struct nfs_server
*server
= NFS_SERVER(dir
);
1971 struct nfs4_opendata
*opendata
;
1974 /* Protect against reboot recovery conflicts */
1976 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1978 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1981 status
= nfs4_recover_expired_lease(server
);
1983 goto err_put_state_owner
;
1984 if (dentry
->d_inode
!= NULL
)
1985 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1987 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1988 if (opendata
== NULL
)
1989 goto err_put_state_owner
;
1991 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
1992 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
1993 if (!opendata
->f_attr
.mdsthreshold
)
1994 goto err_opendata_put
;
1995 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
1997 if (dentry
->d_inode
!= NULL
)
1998 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2000 status
= _nfs4_proc_open(opendata
);
2002 goto err_opendata_put
;
2004 state
= nfs4_opendata_to_nfs4_state(opendata
);
2005 status
= PTR_ERR(state
);
2007 goto err_opendata_put
;
2008 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2009 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2011 status
= nfs4_opendata_access(cred
, opendata
, state
, fmode
);
2013 goto err_opendata_put
;
2015 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
2016 nfs4_exclusive_attrset(opendata
, sattr
);
2018 nfs_fattr_init(opendata
->o_res
.f_attr
);
2019 status
= nfs4_do_setattr(state
->inode
, cred
,
2020 opendata
->o_res
.f_attr
, sattr
,
2023 nfs_setattr_update_inode(state
->inode
, sattr
);
2024 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2027 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2028 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2030 kfree(opendata
->f_attr
.mdsthreshold
);
2031 opendata
->f_attr
.mdsthreshold
= NULL
;
2033 nfs4_opendata_put(opendata
);
2034 nfs4_put_state_owner(sp
);
2038 kfree(opendata
->f_attr
.mdsthreshold
);
2039 nfs4_opendata_put(opendata
);
2040 err_put_state_owner
:
2041 nfs4_put_state_owner(sp
);
2048 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2049 struct dentry
*dentry
,
2052 struct iattr
*sattr
,
2053 struct rpc_cred
*cred
,
2054 struct nfs4_threshold
**ctx_th
)
2056 struct nfs4_exception exception
= { };
2057 struct nfs4_state
*res
;
2060 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
2062 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
2066 /* NOTE: BAD_SEQID means the server and client disagree about the
2067 * book-keeping w.r.t. state-changing operations
2068 * (OPEN/CLOSE/LOCK/LOCKU...)
2069 * It is actually a sign of a bug on the client or on the server.
2071 * If we receive a BAD_SEQID error in the particular case of
2072 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2073 * have unhashed the old state_owner for us, and that we can
2074 * therefore safely retry using a new one. We should still warn
2075 * the user though...
2077 if (status
== -NFS4ERR_BAD_SEQID
) {
2078 pr_warn_ratelimited("NFS: v4 server %s "
2079 " returned a bad sequence-id error!\n",
2080 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2081 exception
.retry
= 1;
2085 * BAD_STATEID on OPEN means that the server cancelled our
2086 * state before it received the OPEN_CONFIRM.
2087 * Recover by retrying the request as per the discussion
2088 * on Page 181 of RFC3530.
2090 if (status
== -NFS4ERR_BAD_STATEID
) {
2091 exception
.retry
= 1;
2094 if (status
== -EAGAIN
) {
2095 /* We must have found a delegation */
2096 exception
.retry
= 1;
2099 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
2100 status
, &exception
));
2101 } while (exception
.retry
);
2105 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2106 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2107 struct nfs4_state
*state
)
2109 struct nfs_server
*server
= NFS_SERVER(inode
);
2110 struct nfs_setattrargs arg
= {
2111 .fh
= NFS_FH(inode
),
2114 .bitmask
= server
->attr_bitmask
,
2116 struct nfs_setattrres res
= {
2120 struct rpc_message msg
= {
2121 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2126 unsigned long timestamp
= jiffies
;
2129 nfs_fattr_init(fattr
);
2131 if (state
!= NULL
) {
2132 struct nfs_lockowner lockowner
= {
2133 .l_owner
= current
->files
,
2134 .l_pid
= current
->tgid
,
2136 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2138 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
2140 /* Use that stateid */
2142 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2144 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2145 if (status
== 0 && state
!= NULL
)
2146 renew_lease(server
, timestamp
);
2150 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2151 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2152 struct nfs4_state
*state
)
2154 struct nfs_server
*server
= NFS_SERVER(inode
);
2155 struct nfs4_exception exception
= {
2161 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2163 case -NFS4ERR_OPENMODE
:
2164 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2166 if (sattr
->ia_valid
& ATTR_OPEN
)
2171 err
= nfs4_handle_exception(server
, err
, &exception
);
2172 } while (exception
.retry
);
2177 struct nfs4_closedata
{
2178 struct inode
*inode
;
2179 struct nfs4_state
*state
;
2180 struct nfs_closeargs arg
;
2181 struct nfs_closeres res
;
2182 struct nfs_fattr fattr
;
2183 unsigned long timestamp
;
2188 static void nfs4_free_closedata(void *data
)
2190 struct nfs4_closedata
*calldata
= data
;
2191 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2192 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2195 pnfs_roc_release(calldata
->state
->inode
);
2196 nfs4_put_open_state(calldata
->state
);
2197 nfs_free_seqid(calldata
->arg
.seqid
);
2198 nfs4_put_state_owner(sp
);
2199 nfs_sb_deactive(sb
);
2203 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2206 spin_lock(&state
->owner
->so_lock
);
2207 if (!(fmode
& FMODE_READ
))
2208 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2209 if (!(fmode
& FMODE_WRITE
))
2210 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2211 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2212 spin_unlock(&state
->owner
->so_lock
);
2215 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2217 struct nfs4_closedata
*calldata
= data
;
2218 struct nfs4_state
*state
= calldata
->state
;
2219 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2221 dprintk("%s: begin!\n", __func__
);
2222 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2224 /* hmm. we are done with the inode, and in the process of freeing
2225 * the state_owner. we keep this around to process errors
2227 switch (task
->tk_status
) {
2230 pnfs_roc_set_barrier(state
->inode
,
2231 calldata
->roc_barrier
);
2232 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2233 renew_lease(server
, calldata
->timestamp
);
2234 nfs4_close_clear_stateid_flags(state
,
2235 calldata
->arg
.fmode
);
2237 case -NFS4ERR_STALE_STATEID
:
2238 case -NFS4ERR_OLD_STATEID
:
2239 case -NFS4ERR_BAD_STATEID
:
2240 case -NFS4ERR_EXPIRED
:
2241 if (calldata
->arg
.fmode
== 0)
2244 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2245 rpc_restart_call_prepare(task
);
2247 nfs_release_seqid(calldata
->arg
.seqid
);
2248 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2249 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2252 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2254 struct nfs4_closedata
*calldata
= data
;
2255 struct nfs4_state
*state
= calldata
->state
;
2256 struct inode
*inode
= calldata
->inode
;
2259 dprintk("%s: begin!\n", __func__
);
2260 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2263 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2264 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2265 spin_lock(&state
->owner
->so_lock
);
2266 /* Calculate the change in open mode */
2267 if (state
->n_rdwr
== 0) {
2268 if (state
->n_rdonly
== 0) {
2269 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2270 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2271 calldata
->arg
.fmode
&= ~FMODE_READ
;
2273 if (state
->n_wronly
== 0) {
2274 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2275 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2276 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2279 spin_unlock(&state
->owner
->so_lock
);
2282 /* Note: exit _without_ calling nfs4_close_done */
2283 task
->tk_action
= NULL
;
2287 if (calldata
->arg
.fmode
== 0) {
2288 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2289 if (calldata
->roc
&&
2290 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
))
2294 nfs_fattr_init(calldata
->res
.fattr
);
2295 calldata
->timestamp
= jiffies
;
2296 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2297 &calldata
->arg
.seq_args
,
2298 &calldata
->res
.seq_res
,
2301 rpc_call_start(task
);
2303 dprintk("%s: done!\n", __func__
);
2306 static const struct rpc_call_ops nfs4_close_ops
= {
2307 .rpc_call_prepare
= nfs4_close_prepare
,
2308 .rpc_call_done
= nfs4_close_done
,
2309 .rpc_release
= nfs4_free_closedata
,
2313 * It is possible for data to be read/written from a mem-mapped file
2314 * after the sys_close call (which hits the vfs layer as a flush).
2315 * This means that we can't safely call nfsv4 close on a file until
2316 * the inode is cleared. This in turn means that we are not good
2317 * NFSv4 citizens - we do not indicate to the server to update the file's
2318 * share state even when we are done with one of the three share
2319 * stateid's in the inode.
2321 * NOTE: Caller must be holding the sp->so_owner semaphore!
2323 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2325 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2326 struct nfs4_closedata
*calldata
;
2327 struct nfs4_state_owner
*sp
= state
->owner
;
2328 struct rpc_task
*task
;
2329 struct rpc_message msg
= {
2330 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2331 .rpc_cred
= state
->owner
->so_cred
,
2333 struct rpc_task_setup task_setup_data
= {
2334 .rpc_client
= server
->client
,
2335 .rpc_message
= &msg
,
2336 .callback_ops
= &nfs4_close_ops
,
2337 .workqueue
= nfsiod_workqueue
,
2338 .flags
= RPC_TASK_ASYNC
,
2340 int status
= -ENOMEM
;
2342 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2343 if (calldata
== NULL
)
2345 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2346 calldata
->inode
= state
->inode
;
2347 calldata
->state
= state
;
2348 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2349 calldata
->arg
.stateid
= &state
->open_stateid
;
2350 /* Serialization for the sequence id */
2351 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2352 if (calldata
->arg
.seqid
== NULL
)
2353 goto out_free_calldata
;
2354 calldata
->arg
.fmode
= 0;
2355 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2356 calldata
->res
.fattr
= &calldata
->fattr
;
2357 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2358 calldata
->res
.server
= server
;
2359 calldata
->roc
= pnfs_roc(state
->inode
);
2360 nfs_sb_active(calldata
->inode
->i_sb
);
2362 msg
.rpc_argp
= &calldata
->arg
;
2363 msg
.rpc_resp
= &calldata
->res
;
2364 task_setup_data
.callback_data
= calldata
;
2365 task
= rpc_run_task(&task_setup_data
);
2367 return PTR_ERR(task
);
2370 status
= rpc_wait_for_completion_task(task
);
2376 nfs4_put_open_state(state
);
2377 nfs4_put_state_owner(sp
);
2381 static struct inode
*
2382 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2384 struct nfs4_state
*state
;
2386 /* Protect against concurrent sillydeletes */
2387 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2388 ctx
->cred
, &ctx
->mdsthreshold
);
2390 return ERR_CAST(state
);
2392 return igrab(state
->inode
);
2395 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2397 if (ctx
->state
== NULL
)
2400 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2402 nfs4_close_state(ctx
->state
, ctx
->mode
);
2405 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2407 struct nfs4_server_caps_arg args
= {
2410 struct nfs4_server_caps_res res
= {};
2411 struct rpc_message msg
= {
2412 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2418 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2420 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2421 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2422 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2423 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2424 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2425 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2426 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2427 server
->caps
|= NFS_CAP_ACLS
;
2428 if (res
.has_links
!= 0)
2429 server
->caps
|= NFS_CAP_HARDLINKS
;
2430 if (res
.has_symlinks
!= 0)
2431 server
->caps
|= NFS_CAP_SYMLINKS
;
2432 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2433 server
->caps
|= NFS_CAP_FILEID
;
2434 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2435 server
->caps
|= NFS_CAP_MODE
;
2436 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2437 server
->caps
|= NFS_CAP_NLINK
;
2438 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2439 server
->caps
|= NFS_CAP_OWNER
;
2440 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2441 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2442 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2443 server
->caps
|= NFS_CAP_ATIME
;
2444 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2445 server
->caps
|= NFS_CAP_CTIME
;
2446 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2447 server
->caps
|= NFS_CAP_MTIME
;
2449 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2450 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2451 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2452 server
->acl_bitmask
= res
.acl_bitmask
;
2453 server
->fh_expire_type
= res
.fh_expire_type
;
2459 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2461 struct nfs4_exception exception
= { };
2464 err
= nfs4_handle_exception(server
,
2465 _nfs4_server_capabilities(server
, fhandle
),
2467 } while (exception
.retry
);
2471 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2472 struct nfs_fsinfo
*info
)
2474 struct nfs4_lookup_root_arg args
= {
2475 .bitmask
= nfs4_fattr_bitmap
,
2477 struct nfs4_lookup_res res
= {
2479 .fattr
= info
->fattr
,
2482 struct rpc_message msg
= {
2483 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2488 nfs_fattr_init(info
->fattr
);
2489 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2492 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2493 struct nfs_fsinfo
*info
)
2495 struct nfs4_exception exception
= { };
2498 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2501 case -NFS4ERR_WRONGSEC
:
2504 err
= nfs4_handle_exception(server
, err
, &exception
);
2506 } while (exception
.retry
);
2511 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2512 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2514 struct rpc_auth
*auth
;
2517 auth
= rpcauth_create(flavor
, server
->client
);
2522 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2527 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2528 struct nfs_fsinfo
*info
)
2530 int i
, len
, status
= 0;
2531 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2533 len
= rpcauth_list_flavors(flav_array
, ARRAY_SIZE(flav_array
));
2536 for (i
= 0; i
< len
; i
++) {
2537 /* AUTH_UNIX is the default flavor if none was specified,
2538 * thus has already been tried. */
2539 if (flav_array
[i
] == RPC_AUTH_UNIX
)
2542 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2543 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2548 * -EACCESS could mean that the user doesn't have correct permissions
2549 * to access the mount. It could also mean that we tried to mount
2550 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2551 * existing mount programs don't handle -EACCES very well so it should
2552 * be mapped to -EPERM instead.
2554 if (status
== -EACCES
)
2560 * get the file handle for the "/" directory on the server
2562 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2563 struct nfs_fsinfo
*info
)
2565 int minor_version
= server
->nfs_client
->cl_minorversion
;
2566 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2567 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2569 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2570 * by nfs4_map_errors() as this function exits.
2572 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2574 status
= nfs4_server_capabilities(server
, fhandle
);
2576 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2577 return nfs4_map_errors(status
);
2580 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2581 struct nfs_fsinfo
*info
)
2584 struct nfs_fattr
*fattr
= info
->fattr
;
2586 error
= nfs4_server_capabilities(server
, mntfh
);
2588 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2592 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2594 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2598 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2599 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2600 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2606 * Get locations and (maybe) other attributes of a referral.
2607 * Note that we'll actually follow the referral later when
2608 * we detect fsid mismatch in inode revalidation
2610 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2611 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2612 struct nfs_fh
*fhandle
)
2614 int status
= -ENOMEM
;
2615 struct page
*page
= NULL
;
2616 struct nfs4_fs_locations
*locations
= NULL
;
2618 page
= alloc_page(GFP_KERNEL
);
2621 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2622 if (locations
== NULL
)
2625 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2628 /* Make sure server returned a different fsid for the referral */
2629 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2630 dprintk("%s: server did not return a different fsid for"
2631 " a referral at %s\n", __func__
, name
->name
);
2635 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2636 nfs_fixup_referral_attributes(&locations
->fattr
);
2638 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2639 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2640 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2648 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2650 struct nfs4_getattr_arg args
= {
2652 .bitmask
= server
->attr_bitmask
,
2654 struct nfs4_getattr_res res
= {
2658 struct rpc_message msg
= {
2659 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2664 nfs_fattr_init(fattr
);
2665 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2668 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2670 struct nfs4_exception exception
= { };
2673 err
= nfs4_handle_exception(server
,
2674 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2676 } while (exception
.retry
);
2681 * The file is not closed if it is opened due to the a request to change
2682 * the size of the file. The open call will not be needed once the
2683 * VFS layer lookup-intents are implemented.
2685 * Close is called when the inode is destroyed.
2686 * If we haven't opened the file for O_WRONLY, we
2687 * need to in the size_change case to obtain a stateid.
2690 * Because OPEN is always done by name in nfsv4, it is
2691 * possible that we opened a different file by the same
2692 * name. We can recognize this race condition, but we
2693 * can't do anything about it besides returning an error.
2695 * This will be fixed with VFS changes (lookup-intent).
2698 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2699 struct iattr
*sattr
)
2701 struct inode
*inode
= dentry
->d_inode
;
2702 struct rpc_cred
*cred
= NULL
;
2703 struct nfs4_state
*state
= NULL
;
2706 if (pnfs_ld_layoutret_on_setattr(inode
))
2707 pnfs_return_layout(inode
);
2709 nfs_fattr_init(fattr
);
2711 /* Deal with open(O_TRUNC) */
2712 if (sattr
->ia_valid
& ATTR_OPEN
)
2713 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2715 /* Optimization: if the end result is no change, don't RPC */
2716 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2719 /* Search for an existing open(O_WRITE) file */
2720 if (sattr
->ia_valid
& ATTR_FILE
) {
2721 struct nfs_open_context
*ctx
;
2723 ctx
= nfs_file_open_context(sattr
->ia_file
);
2730 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2732 nfs_setattr_update_inode(inode
, sattr
);
2736 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2737 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2738 struct nfs_fattr
*fattr
)
2740 struct nfs_server
*server
= NFS_SERVER(dir
);
2742 struct nfs4_lookup_arg args
= {
2743 .bitmask
= server
->attr_bitmask
,
2744 .dir_fh
= NFS_FH(dir
),
2747 struct nfs4_lookup_res res
= {
2752 struct rpc_message msg
= {
2753 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2758 nfs_fattr_init(fattr
);
2760 dprintk("NFS call lookup %s\n", name
->name
);
2761 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2762 dprintk("NFS reply lookup: %d\n", status
);
2766 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2768 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2769 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2770 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2774 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2775 struct qstr
*name
, struct nfs_fh
*fhandle
,
2776 struct nfs_fattr
*fattr
)
2778 struct nfs4_exception exception
= { };
2779 struct rpc_clnt
*client
= *clnt
;
2782 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2784 case -NFS4ERR_BADNAME
:
2787 case -NFS4ERR_MOVED
:
2788 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2790 case -NFS4ERR_WRONGSEC
:
2792 if (client
!= *clnt
)
2795 client
= nfs4_create_sec_client(client
, dir
, name
);
2797 return PTR_ERR(client
);
2799 exception
.retry
= 1;
2802 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2804 } while (exception
.retry
);
2809 else if (client
!= *clnt
)
2810 rpc_shutdown_client(client
);
2815 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2816 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2819 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2821 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2822 if (client
!= NFS_CLIENT(dir
)) {
2823 rpc_shutdown_client(client
);
2824 nfs_fixup_secinfo_attributes(fattr
);
2830 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2831 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2834 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2836 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2838 rpc_shutdown_client(client
);
2839 return ERR_PTR(status
);
2844 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2846 struct nfs_server
*server
= NFS_SERVER(inode
);
2847 struct nfs4_accessargs args
= {
2848 .fh
= NFS_FH(inode
),
2849 .bitmask
= server
->cache_consistency_bitmask
,
2851 struct nfs4_accessres res
= {
2854 struct rpc_message msg
= {
2855 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2858 .rpc_cred
= entry
->cred
,
2860 int mode
= entry
->mask
;
2864 * Determine which access bits we want to ask for...
2866 if (mode
& MAY_READ
)
2867 args
.access
|= NFS4_ACCESS_READ
;
2868 if (S_ISDIR(inode
->i_mode
)) {
2869 if (mode
& MAY_WRITE
)
2870 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2871 if (mode
& MAY_EXEC
)
2872 args
.access
|= NFS4_ACCESS_LOOKUP
;
2874 if (mode
& MAY_WRITE
)
2875 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2876 if (mode
& MAY_EXEC
)
2877 args
.access
|= NFS4_ACCESS_EXECUTE
;
2880 res
.fattr
= nfs_alloc_fattr();
2881 if (res
.fattr
== NULL
)
2884 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2886 nfs_access_set_mask(entry
, res
.access
);
2887 nfs_refresh_inode(inode
, res
.fattr
);
2889 nfs_free_fattr(res
.fattr
);
2893 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2895 struct nfs4_exception exception
= { };
2898 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2899 _nfs4_proc_access(inode
, entry
),
2901 } while (exception
.retry
);
2906 * TODO: For the time being, we don't try to get any attributes
2907 * along with any of the zero-copy operations READ, READDIR,
2910 * In the case of the first three, we want to put the GETATTR
2911 * after the read-type operation -- this is because it is hard
2912 * to predict the length of a GETATTR response in v4, and thus
2913 * align the READ data correctly. This means that the GETATTR
2914 * may end up partially falling into the page cache, and we should
2915 * shift it into the 'tail' of the xdr_buf before processing.
2916 * To do this efficiently, we need to know the total length
2917 * of data received, which doesn't seem to be available outside
2920 * In the case of WRITE, we also want to put the GETATTR after
2921 * the operation -- in this case because we want to make sure
2922 * we get the post-operation mtime and size.
2924 * Both of these changes to the XDR layer would in fact be quite
2925 * minor, but I decided to leave them for a subsequent patch.
2927 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2928 unsigned int pgbase
, unsigned int pglen
)
2930 struct nfs4_readlink args
= {
2931 .fh
= NFS_FH(inode
),
2936 struct nfs4_readlink_res res
;
2937 struct rpc_message msg
= {
2938 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2943 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2946 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2947 unsigned int pgbase
, unsigned int pglen
)
2949 struct nfs4_exception exception
= { };
2952 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2953 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2955 } while (exception
.retry
);
2960 * This is just for mknod. open(O_CREAT) will always do ->open_context().
2963 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2966 struct nfs_open_context
*ctx
;
2967 struct nfs4_state
*state
;
2970 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
2972 return PTR_ERR(ctx
);
2974 sattr
->ia_mode
&= ~current_umask();
2975 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
2976 flags
, sattr
, ctx
->cred
,
2977 &ctx
->mdsthreshold
);
2979 if (IS_ERR(state
)) {
2980 status
= PTR_ERR(state
);
2983 d_add(dentry
, igrab(state
->inode
));
2984 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2987 put_nfs_open_context(ctx
);
2991 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2993 struct nfs_server
*server
= NFS_SERVER(dir
);
2994 struct nfs_removeargs args
= {
2998 struct nfs_removeres res
= {
3001 struct rpc_message msg
= {
3002 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3008 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3010 update_changeattr(dir
, &res
.cinfo
);
3014 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3016 struct nfs4_exception exception
= { };
3019 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3020 _nfs4_proc_remove(dir
, name
),
3022 } while (exception
.retry
);
3026 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3028 struct nfs_server
*server
= NFS_SERVER(dir
);
3029 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3030 struct nfs_removeres
*res
= msg
->rpc_resp
;
3032 res
->server
= server
;
3033 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3034 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3037 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3039 if (nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3040 &data
->args
.seq_args
,
3044 rpc_call_start(task
);
3047 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3049 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
3051 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3053 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3055 update_changeattr(dir
, &res
->cinfo
);
3059 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3061 struct nfs_server
*server
= NFS_SERVER(dir
);
3062 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3063 struct nfs_renameres
*res
= msg
->rpc_resp
;
3065 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3066 res
->server
= server
;
3067 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3070 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3072 if (nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3073 &data
->args
.seq_args
,
3077 rpc_call_start(task
);
3080 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3081 struct inode
*new_dir
)
3083 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3085 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3087 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3090 update_changeattr(old_dir
, &res
->old_cinfo
);
3091 update_changeattr(new_dir
, &res
->new_cinfo
);
3095 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3096 struct inode
*new_dir
, struct qstr
*new_name
)
3098 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3099 struct nfs_renameargs arg
= {
3100 .old_dir
= NFS_FH(old_dir
),
3101 .new_dir
= NFS_FH(new_dir
),
3102 .old_name
= old_name
,
3103 .new_name
= new_name
,
3105 struct nfs_renameres res
= {
3108 struct rpc_message msg
= {
3109 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3113 int status
= -ENOMEM
;
3115 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3117 update_changeattr(old_dir
, &res
.old_cinfo
);
3118 update_changeattr(new_dir
, &res
.new_cinfo
);
3123 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3124 struct inode
*new_dir
, struct qstr
*new_name
)
3126 struct nfs4_exception exception
= { };
3129 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3130 _nfs4_proc_rename(old_dir
, old_name
,
3133 } while (exception
.retry
);
3137 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3139 struct nfs_server
*server
= NFS_SERVER(inode
);
3140 struct nfs4_link_arg arg
= {
3141 .fh
= NFS_FH(inode
),
3142 .dir_fh
= NFS_FH(dir
),
3144 .bitmask
= server
->attr_bitmask
,
3146 struct nfs4_link_res res
= {
3149 struct rpc_message msg
= {
3150 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3154 int status
= -ENOMEM
;
3156 res
.fattr
= nfs_alloc_fattr();
3157 if (res
.fattr
== NULL
)
3160 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3162 update_changeattr(dir
, &res
.cinfo
);
3163 nfs_post_op_update_inode(inode
, res
.fattr
);
3166 nfs_free_fattr(res
.fattr
);
3170 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3172 struct nfs4_exception exception
= { };
3175 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3176 _nfs4_proc_link(inode
, dir
, name
),
3178 } while (exception
.retry
);
3182 struct nfs4_createdata
{
3183 struct rpc_message msg
;
3184 struct nfs4_create_arg arg
;
3185 struct nfs4_create_res res
;
3187 struct nfs_fattr fattr
;
3190 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3191 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3193 struct nfs4_createdata
*data
;
3195 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3197 struct nfs_server
*server
= NFS_SERVER(dir
);
3199 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3200 data
->msg
.rpc_argp
= &data
->arg
;
3201 data
->msg
.rpc_resp
= &data
->res
;
3202 data
->arg
.dir_fh
= NFS_FH(dir
);
3203 data
->arg
.server
= server
;
3204 data
->arg
.name
= name
;
3205 data
->arg
.attrs
= sattr
;
3206 data
->arg
.ftype
= ftype
;
3207 data
->arg
.bitmask
= server
->attr_bitmask
;
3208 data
->res
.server
= server
;
3209 data
->res
.fh
= &data
->fh
;
3210 data
->res
.fattr
= &data
->fattr
;
3211 nfs_fattr_init(data
->res
.fattr
);
3216 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3218 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3219 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3221 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3222 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3227 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3232 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3233 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3235 struct nfs4_createdata
*data
;
3236 int status
= -ENAMETOOLONG
;
3238 if (len
> NFS4_MAXPATHLEN
)
3242 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3246 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3247 data
->arg
.u
.symlink
.pages
= &page
;
3248 data
->arg
.u
.symlink
.len
= len
;
3250 status
= nfs4_do_create(dir
, dentry
, data
);
3252 nfs4_free_createdata(data
);
3257 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3258 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3260 struct nfs4_exception exception
= { };
3263 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3264 _nfs4_proc_symlink(dir
, dentry
, page
,
3267 } while (exception
.retry
);
3271 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3272 struct iattr
*sattr
)
3274 struct nfs4_createdata
*data
;
3275 int status
= -ENOMEM
;
3277 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3281 status
= nfs4_do_create(dir
, dentry
, data
);
3283 nfs4_free_createdata(data
);
3288 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3289 struct iattr
*sattr
)
3291 struct nfs4_exception exception
= { };
3294 sattr
->ia_mode
&= ~current_umask();
3296 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3297 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3299 } while (exception
.retry
);
3303 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3304 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3306 struct inode
*dir
= dentry
->d_inode
;
3307 struct nfs4_readdir_arg args
= {
3312 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3315 struct nfs4_readdir_res res
;
3316 struct rpc_message msg
= {
3317 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3324 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3325 dentry
->d_parent
->d_name
.name
,
3326 dentry
->d_name
.name
,
3327 (unsigned long long)cookie
);
3328 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3329 res
.pgbase
= args
.pgbase
;
3330 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3332 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3333 status
+= args
.pgbase
;
3336 nfs_invalidate_atime(dir
);
3338 dprintk("%s: returns %d\n", __func__
, status
);
3342 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3343 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3345 struct nfs4_exception exception
= { };
3348 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3349 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3350 pages
, count
, plus
),
3352 } while (exception
.retry
);
3356 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3357 struct iattr
*sattr
, dev_t rdev
)
3359 struct nfs4_createdata
*data
;
3360 int mode
= sattr
->ia_mode
;
3361 int status
= -ENOMEM
;
3363 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
3364 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
3366 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3371 data
->arg
.ftype
= NF4FIFO
;
3372 else if (S_ISBLK(mode
)) {
3373 data
->arg
.ftype
= NF4BLK
;
3374 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3375 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3377 else if (S_ISCHR(mode
)) {
3378 data
->arg
.ftype
= NF4CHR
;
3379 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3380 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3383 status
= nfs4_do_create(dir
, dentry
, data
);
3385 nfs4_free_createdata(data
);
3390 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3391 struct iattr
*sattr
, dev_t rdev
)
3393 struct nfs4_exception exception
= { };
3396 sattr
->ia_mode
&= ~current_umask();
3398 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3399 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3401 } while (exception
.retry
);
3405 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3406 struct nfs_fsstat
*fsstat
)
3408 struct nfs4_statfs_arg args
= {
3410 .bitmask
= server
->attr_bitmask
,
3412 struct nfs4_statfs_res res
= {
3415 struct rpc_message msg
= {
3416 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3421 nfs_fattr_init(fsstat
->fattr
);
3422 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3425 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3427 struct nfs4_exception exception
= { };
3430 err
= nfs4_handle_exception(server
,
3431 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3433 } while (exception
.retry
);
3437 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3438 struct nfs_fsinfo
*fsinfo
)
3440 struct nfs4_fsinfo_arg args
= {
3442 .bitmask
= server
->attr_bitmask
,
3444 struct nfs4_fsinfo_res res
= {
3447 struct rpc_message msg
= {
3448 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3453 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3456 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3458 struct nfs4_exception exception
= { };
3462 err
= nfs4_handle_exception(server
,
3463 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3465 } while (exception
.retry
);
3469 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3473 nfs_fattr_init(fsinfo
->fattr
);
3474 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3476 /* block layout checks this! */
3477 server
->pnfs_blksize
= fsinfo
->blksize
;
3478 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3484 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3485 struct nfs_pathconf
*pathconf
)
3487 struct nfs4_pathconf_arg args
= {
3489 .bitmask
= server
->attr_bitmask
,
3491 struct nfs4_pathconf_res res
= {
3492 .pathconf
= pathconf
,
3494 struct rpc_message msg
= {
3495 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3500 /* None of the pathconf attributes are mandatory to implement */
3501 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3502 memset(pathconf
, 0, sizeof(*pathconf
));
3506 nfs_fattr_init(pathconf
->fattr
);
3507 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3510 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3511 struct nfs_pathconf
*pathconf
)
3513 struct nfs4_exception exception
= { };
3517 err
= nfs4_handle_exception(server
,
3518 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3520 } while (exception
.retry
);
3524 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3526 nfs_invalidate_atime(data
->header
->inode
);
3529 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3531 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3533 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3534 rpc_restart_call_prepare(task
);
3538 __nfs4_read_done_cb(data
);
3539 if (task
->tk_status
> 0)
3540 renew_lease(server
, data
->timestamp
);
3544 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3547 dprintk("--> %s\n", __func__
);
3549 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3552 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3553 nfs4_read_done_cb(task
, data
);
3556 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3558 data
->timestamp
= jiffies
;
3559 data
->read_done_cb
= nfs4_read_done_cb
;
3560 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3561 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3564 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3566 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3567 &data
->args
.seq_args
,
3571 rpc_call_start(task
);
3574 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3576 struct inode
*inode
= data
->header
->inode
;
3578 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3579 rpc_restart_call_prepare(task
);
3582 if (task
->tk_status
>= 0) {
3583 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3584 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3589 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3591 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3593 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3594 nfs4_write_done_cb(task
, data
);
3598 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3600 const struct nfs_pgio_header
*hdr
= data
->header
;
3602 /* Don't request attributes for pNFS or O_DIRECT writes */
3603 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3605 /* Otherwise, request attributes if and only if we don't hold
3608 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3611 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3613 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3615 if (!nfs4_write_need_cache_consistency_data(data
)) {
3616 data
->args
.bitmask
= NULL
;
3617 data
->res
.fattr
= NULL
;
3619 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3621 if (!data
->write_done_cb
)
3622 data
->write_done_cb
= nfs4_write_done_cb
;
3623 data
->res
.server
= server
;
3624 data
->timestamp
= jiffies
;
3626 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3627 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3630 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3632 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3633 &data
->args
.seq_args
,
3637 rpc_call_start(task
);
3640 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3642 if (nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3643 &data
->args
.seq_args
,
3647 rpc_call_start(task
);
3650 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3652 struct inode
*inode
= data
->inode
;
3654 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3655 rpc_restart_call_prepare(task
);
3661 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3663 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3665 return data
->commit_done_cb(task
, data
);
3668 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3670 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3672 if (data
->commit_done_cb
== NULL
)
3673 data
->commit_done_cb
= nfs4_commit_done_cb
;
3674 data
->res
.server
= server
;
3675 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3676 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3679 struct nfs4_renewdata
{
3680 struct nfs_client
*client
;
3681 unsigned long timestamp
;
3685 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3686 * standalone procedure for queueing an asynchronous RENEW.
3688 static void nfs4_renew_release(void *calldata
)
3690 struct nfs4_renewdata
*data
= calldata
;
3691 struct nfs_client
*clp
= data
->client
;
3693 if (atomic_read(&clp
->cl_count
) > 1)
3694 nfs4_schedule_state_renewal(clp
);
3695 nfs_put_client(clp
);
3699 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3701 struct nfs4_renewdata
*data
= calldata
;
3702 struct nfs_client
*clp
= data
->client
;
3703 unsigned long timestamp
= data
->timestamp
;
3705 if (task
->tk_status
< 0) {
3706 /* Unless we're shutting down, schedule state recovery! */
3707 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3709 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3710 nfs4_schedule_lease_recovery(clp
);
3713 nfs4_schedule_path_down_recovery(clp
);
3715 do_renew_lease(clp
, timestamp
);
3718 static const struct rpc_call_ops nfs4_renew_ops
= {
3719 .rpc_call_done
= nfs4_renew_done
,
3720 .rpc_release
= nfs4_renew_release
,
3723 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3725 struct rpc_message msg
= {
3726 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3730 struct nfs4_renewdata
*data
;
3732 if (renew_flags
== 0)
3734 if (!atomic_inc_not_zero(&clp
->cl_count
))
3736 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3740 data
->timestamp
= jiffies
;
3741 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3742 &nfs4_renew_ops
, data
);
3745 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3747 struct rpc_message msg
= {
3748 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3752 unsigned long now
= jiffies
;
3755 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3758 do_renew_lease(clp
, now
);
3762 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3764 return (server
->caps
& NFS_CAP_ACLS
)
3765 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3766 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3769 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3770 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3773 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3775 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3776 struct page
**pages
, unsigned int *pgbase
)
3778 struct page
*newpage
, **spages
;
3784 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3785 newpage
= alloc_page(GFP_KERNEL
);
3787 if (newpage
== NULL
)
3789 memcpy(page_address(newpage
), buf
, len
);
3794 } while (buflen
!= 0);
3800 __free_page(spages
[rc
-1]);
3804 struct nfs4_cached_acl
{
3810 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3812 struct nfs_inode
*nfsi
= NFS_I(inode
);
3814 spin_lock(&inode
->i_lock
);
3815 kfree(nfsi
->nfs4_acl
);
3816 nfsi
->nfs4_acl
= acl
;
3817 spin_unlock(&inode
->i_lock
);
3820 static void nfs4_zap_acl_attr(struct inode
*inode
)
3822 nfs4_set_cached_acl(inode
, NULL
);
3825 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3827 struct nfs_inode
*nfsi
= NFS_I(inode
);
3828 struct nfs4_cached_acl
*acl
;
3831 spin_lock(&inode
->i_lock
);
3832 acl
= nfsi
->nfs4_acl
;
3835 if (buf
== NULL
) /* user is just asking for length */
3837 if (acl
->cached
== 0)
3839 ret
= -ERANGE
; /* see getxattr(2) man page */
3840 if (acl
->len
> buflen
)
3842 memcpy(buf
, acl
->data
, acl
->len
);
3846 spin_unlock(&inode
->i_lock
);
3850 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3852 struct nfs4_cached_acl
*acl
;
3853 size_t buflen
= sizeof(*acl
) + acl_len
;
3855 if (buflen
<= PAGE_SIZE
) {
3856 acl
= kmalloc(buflen
, GFP_KERNEL
);
3860 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3862 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3869 nfs4_set_cached_acl(inode
, acl
);
3873 * The getxattr API returns the required buffer length when called with a
3874 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3875 * the required buf. On a NULL buf, we send a page of data to the server
3876 * guessing that the ACL request can be serviced by a page. If so, we cache
3877 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3878 * the cache. If not so, we throw away the page, and cache the required
3879 * length. The next getxattr call will then produce another round trip to
3880 * the server, this time with the input buf of the required size.
3882 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3884 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3885 struct nfs_getaclargs args
= {
3886 .fh
= NFS_FH(inode
),
3890 struct nfs_getaclres res
= {
3893 struct rpc_message msg
= {
3894 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3898 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3899 int ret
= -ENOMEM
, i
;
3901 /* As long as we're doing a round trip to the server anyway,
3902 * let's be prepared for a page of acl data. */
3905 if (npages
> ARRAY_SIZE(pages
))
3908 for (i
= 0; i
< npages
; i
++) {
3909 pages
[i
] = alloc_page(GFP_KERNEL
);
3914 /* for decoding across pages */
3915 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3916 if (!res
.acl_scratch
)
3919 args
.acl_len
= npages
* PAGE_SIZE
;
3920 args
.acl_pgbase
= 0;
3922 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3923 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3924 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3925 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3929 /* Handle the case where the passed-in buffer is too short */
3930 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
3931 /* Did the user only issue a request for the acl length? */
3937 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
3939 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
3943 for (i
= 0; i
< npages
; i
++)
3945 __free_page(pages
[i
]);
3946 if (res
.acl_scratch
)
3947 __free_page(res
.acl_scratch
);
3951 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3953 struct nfs4_exception exception
= { };
3956 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3959 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3960 } while (exception
.retry
);
3964 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3966 struct nfs_server
*server
= NFS_SERVER(inode
);
3969 if (!nfs4_server_supports_acls(server
))
3971 ret
= nfs_revalidate_inode(server
, inode
);
3974 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3975 nfs_zap_acl_cache(inode
);
3976 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3978 /* -ENOENT is returned if there is no ACL or if there is an ACL
3979 * but no cached acl data, just the acl length */
3981 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3984 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3986 struct nfs_server
*server
= NFS_SERVER(inode
);
3987 struct page
*pages
[NFS4ACL_MAXPAGES
];
3988 struct nfs_setaclargs arg
= {
3989 .fh
= NFS_FH(inode
),
3993 struct nfs_setaclres res
;
3994 struct rpc_message msg
= {
3995 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3999 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4002 if (!nfs4_server_supports_acls(server
))
4004 if (npages
> ARRAY_SIZE(pages
))
4006 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4009 nfs4_inode_return_delegation(inode
);
4010 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4013 * Free each page after tx, so the only ref left is
4014 * held by the network stack
4017 put_page(pages
[i
-1]);
4020 * Acl update can result in inode attribute update.
4021 * so mark the attribute cache invalid.
4023 spin_lock(&inode
->i_lock
);
4024 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4025 spin_unlock(&inode
->i_lock
);
4026 nfs_access_zap_cache(inode
);
4027 nfs_zap_acl_cache(inode
);
4031 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4033 struct nfs4_exception exception
= { };
4036 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4037 __nfs4_proc_set_acl(inode
, buf
, buflen
),
4039 } while (exception
.retry
);
4044 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4046 struct nfs_client
*clp
= server
->nfs_client
;
4048 if (task
->tk_status
>= 0)
4050 switch(task
->tk_status
) {
4051 case -NFS4ERR_DELEG_REVOKED
:
4052 case -NFS4ERR_ADMIN_REVOKED
:
4053 case -NFS4ERR_BAD_STATEID
:
4056 nfs_remove_bad_delegation(state
->inode
);
4057 case -NFS4ERR_OPENMODE
:
4060 nfs4_schedule_stateid_recovery(server
, state
);
4061 goto wait_on_recovery
;
4062 case -NFS4ERR_EXPIRED
:
4064 nfs4_schedule_stateid_recovery(server
, state
);
4065 case -NFS4ERR_STALE_STATEID
:
4066 case -NFS4ERR_STALE_CLIENTID
:
4067 nfs4_schedule_lease_recovery(clp
);
4068 goto wait_on_recovery
;
4069 #if defined(CONFIG_NFS_V4_1)
4070 case -NFS4ERR_BADSESSION
:
4071 case -NFS4ERR_BADSLOT
:
4072 case -NFS4ERR_BAD_HIGH_SLOT
:
4073 case -NFS4ERR_DEADSESSION
:
4074 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4075 case -NFS4ERR_SEQ_FALSE_RETRY
:
4076 case -NFS4ERR_SEQ_MISORDERED
:
4077 dprintk("%s ERROR %d, Reset session\n", __func__
,
4079 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4080 task
->tk_status
= 0;
4082 #endif /* CONFIG_NFS_V4_1 */
4083 case -NFS4ERR_DELAY
:
4084 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4085 case -NFS4ERR_GRACE
:
4087 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4088 task
->tk_status
= 0;
4090 case -NFS4ERR_RETRY_UNCACHED_REP
:
4091 case -NFS4ERR_OLD_STATEID
:
4092 task
->tk_status
= 0;
4095 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4098 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4099 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4100 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4101 task
->tk_status
= 0;
4105 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4106 nfs4_verifier
*bootverf
)
4110 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4111 /* An impossible timestamp guarantees this value
4112 * will never match a generated boot time. */
4114 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4116 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4117 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4118 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4120 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4124 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4125 char *buf
, size_t len
)
4127 unsigned int result
;
4130 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4132 rpc_peeraddr2str(clp
->cl_rpcclient
,
4134 rpc_peeraddr2str(clp
->cl_rpcclient
,
4135 RPC_DISPLAY_PROTO
));
4141 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4142 char *buf
, size_t len
)
4144 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4146 if (nfs4_client_id_uniquifier
[0] != '\0')
4147 nodename
= nfs4_client_id_uniquifier
;
4148 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4149 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4154 * nfs4_proc_setclientid - Negotiate client ID
4155 * @clp: state data structure
4156 * @program: RPC program for NFSv4 callback service
4157 * @port: IP port number for NFS4 callback service
4158 * @cred: RPC credential to use for this call
4159 * @res: where to place the result
4161 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4163 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4164 unsigned short port
, struct rpc_cred
*cred
,
4165 struct nfs4_setclientid_res
*res
)
4167 nfs4_verifier sc_verifier
;
4168 struct nfs4_setclientid setclientid
= {
4169 .sc_verifier
= &sc_verifier
,
4171 .sc_cb_ident
= clp
->cl_cb_ident
,
4173 struct rpc_message msg
= {
4174 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4175 .rpc_argp
= &setclientid
,
4181 /* nfs_client_id4 */
4182 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4183 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4184 setclientid
.sc_name_len
=
4185 nfs4_init_uniform_client_string(clp
,
4186 setclientid
.sc_name
,
4187 sizeof(setclientid
.sc_name
));
4189 setclientid
.sc_name_len
=
4190 nfs4_init_nonuniform_client_string(clp
,
4191 setclientid
.sc_name
,
4192 sizeof(setclientid
.sc_name
));
4195 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4196 sizeof(setclientid
.sc_netid
),
4197 rpc_peeraddr2str(clp
->cl_rpcclient
,
4198 RPC_DISPLAY_NETID
));
4200 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4201 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4202 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4204 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4205 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4206 setclientid
.sc_name_len
, setclientid
.sc_name
);
4207 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4208 dprintk("NFS reply setclientid: %d\n", status
);
4213 * nfs4_proc_setclientid_confirm - Confirm client ID
4214 * @clp: state data structure
4215 * @res: result of a previous SETCLIENTID
4216 * @cred: RPC credential to use for this call
4218 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4220 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4221 struct nfs4_setclientid_res
*arg
,
4222 struct rpc_cred
*cred
)
4224 struct nfs_fsinfo fsinfo
;
4225 struct rpc_message msg
= {
4226 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4228 .rpc_resp
= &fsinfo
,
4234 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4235 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4238 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4240 spin_lock(&clp
->cl_lock
);
4241 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4242 clp
->cl_last_renewal
= now
;
4243 spin_unlock(&clp
->cl_lock
);
4245 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4249 struct nfs4_delegreturndata
{
4250 struct nfs4_delegreturnargs args
;
4251 struct nfs4_delegreturnres res
;
4253 nfs4_stateid stateid
;
4254 unsigned long timestamp
;
4255 struct nfs_fattr fattr
;
4259 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4261 struct nfs4_delegreturndata
*data
= calldata
;
4263 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4266 switch (task
->tk_status
) {
4267 case -NFS4ERR_STALE_STATEID
:
4268 case -NFS4ERR_EXPIRED
:
4270 renew_lease(data
->res
.server
, data
->timestamp
);
4273 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4275 rpc_restart_call_prepare(task
);
4279 data
->rpc_status
= task
->tk_status
;
4282 static void nfs4_delegreturn_release(void *calldata
)
4287 #if defined(CONFIG_NFS_V4_1)
4288 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4290 struct nfs4_delegreturndata
*d_data
;
4292 d_data
= (struct nfs4_delegreturndata
*)data
;
4294 if (nfs4_setup_sequence(d_data
->res
.server
,
4295 &d_data
->args
.seq_args
,
4296 &d_data
->res
.seq_res
, task
))
4298 rpc_call_start(task
);
4300 #endif /* CONFIG_NFS_V4_1 */
4302 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4303 #if defined(CONFIG_NFS_V4_1)
4304 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4305 #endif /* CONFIG_NFS_V4_1 */
4306 .rpc_call_done
= nfs4_delegreturn_done
,
4307 .rpc_release
= nfs4_delegreturn_release
,
4310 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4312 struct nfs4_delegreturndata
*data
;
4313 struct nfs_server
*server
= NFS_SERVER(inode
);
4314 struct rpc_task
*task
;
4315 struct rpc_message msg
= {
4316 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4319 struct rpc_task_setup task_setup_data
= {
4320 .rpc_client
= server
->client
,
4321 .rpc_message
= &msg
,
4322 .callback_ops
= &nfs4_delegreturn_ops
,
4323 .flags
= RPC_TASK_ASYNC
,
4327 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4330 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4331 data
->args
.fhandle
= &data
->fh
;
4332 data
->args
.stateid
= &data
->stateid
;
4333 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4334 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4335 nfs4_stateid_copy(&data
->stateid
, stateid
);
4336 data
->res
.fattr
= &data
->fattr
;
4337 data
->res
.server
= server
;
4338 nfs_fattr_init(data
->res
.fattr
);
4339 data
->timestamp
= jiffies
;
4340 data
->rpc_status
= 0;
4342 task_setup_data
.callback_data
= data
;
4343 msg
.rpc_argp
= &data
->args
;
4344 msg
.rpc_resp
= &data
->res
;
4345 task
= rpc_run_task(&task_setup_data
);
4347 return PTR_ERR(task
);
4350 status
= nfs4_wait_for_completion_rpc_task(task
);
4353 status
= data
->rpc_status
;
4355 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4357 nfs_refresh_inode(inode
, &data
->fattr
);
4363 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4365 struct nfs_server
*server
= NFS_SERVER(inode
);
4366 struct nfs4_exception exception
= { };
4369 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4371 case -NFS4ERR_STALE_STATEID
:
4372 case -NFS4ERR_EXPIRED
:
4376 err
= nfs4_handle_exception(server
, err
, &exception
);
4377 } while (exception
.retry
);
4381 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4382 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4385 * sleep, with exponential backoff, and retry the LOCK operation.
4387 static unsigned long
4388 nfs4_set_lock_task_retry(unsigned long timeout
)
4390 freezable_schedule_timeout_killable(timeout
);
4392 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4393 return NFS4_LOCK_MAXTIMEOUT
;
4397 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4399 struct inode
*inode
= state
->inode
;
4400 struct nfs_server
*server
= NFS_SERVER(inode
);
4401 struct nfs_client
*clp
= server
->nfs_client
;
4402 struct nfs_lockt_args arg
= {
4403 .fh
= NFS_FH(inode
),
4406 struct nfs_lockt_res res
= {
4409 struct rpc_message msg
= {
4410 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4413 .rpc_cred
= state
->owner
->so_cred
,
4415 struct nfs4_lock_state
*lsp
;
4418 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4419 status
= nfs4_set_lock_state(state
, request
);
4422 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4423 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4424 arg
.lock_owner
.s_dev
= server
->s_dev
;
4425 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4428 request
->fl_type
= F_UNLCK
;
4430 case -NFS4ERR_DENIED
:
4433 request
->fl_ops
->fl_release_private(request
);
4438 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4440 struct nfs4_exception exception
= { };
4444 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4445 _nfs4_proc_getlk(state
, cmd
, request
),
4447 } while (exception
.retry
);
4451 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4454 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4456 res
= posix_lock_file_wait(file
, fl
);
4459 res
= flock_lock_file_wait(file
, fl
);
4467 struct nfs4_unlockdata
{
4468 struct nfs_locku_args arg
;
4469 struct nfs_locku_res res
;
4470 struct nfs4_lock_state
*lsp
;
4471 struct nfs_open_context
*ctx
;
4472 struct file_lock fl
;
4473 const struct nfs_server
*server
;
4474 unsigned long timestamp
;
4477 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4478 struct nfs_open_context
*ctx
,
4479 struct nfs4_lock_state
*lsp
,
4480 struct nfs_seqid
*seqid
)
4482 struct nfs4_unlockdata
*p
;
4483 struct inode
*inode
= lsp
->ls_state
->inode
;
4485 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4488 p
->arg
.fh
= NFS_FH(inode
);
4490 p
->arg
.seqid
= seqid
;
4491 p
->res
.seqid
= seqid
;
4492 p
->arg
.stateid
= &lsp
->ls_stateid
;
4494 atomic_inc(&lsp
->ls_count
);
4495 /* Ensure we don't close file until we're done freeing locks! */
4496 p
->ctx
= get_nfs_open_context(ctx
);
4497 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4498 p
->server
= NFS_SERVER(inode
);
4502 static void nfs4_locku_release_calldata(void *data
)
4504 struct nfs4_unlockdata
*calldata
= data
;
4505 nfs_free_seqid(calldata
->arg
.seqid
);
4506 nfs4_put_lock_state(calldata
->lsp
);
4507 put_nfs_open_context(calldata
->ctx
);
4511 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4513 struct nfs4_unlockdata
*calldata
= data
;
4515 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4517 switch (task
->tk_status
) {
4519 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4520 &calldata
->res
.stateid
);
4521 renew_lease(calldata
->server
, calldata
->timestamp
);
4523 case -NFS4ERR_BAD_STATEID
:
4524 case -NFS4ERR_OLD_STATEID
:
4525 case -NFS4ERR_STALE_STATEID
:
4526 case -NFS4ERR_EXPIRED
:
4529 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4530 rpc_restart_call_prepare(task
);
4534 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4536 struct nfs4_unlockdata
*calldata
= data
;
4538 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4540 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4541 /* Note: exit _without_ running nfs4_locku_done */
4542 task
->tk_action
= NULL
;
4545 calldata
->timestamp
= jiffies
;
4546 if (nfs4_setup_sequence(calldata
->server
,
4547 &calldata
->arg
.seq_args
,
4548 &calldata
->res
.seq_res
, task
))
4550 rpc_call_start(task
);
4553 static const struct rpc_call_ops nfs4_locku_ops
= {
4554 .rpc_call_prepare
= nfs4_locku_prepare
,
4555 .rpc_call_done
= nfs4_locku_done
,
4556 .rpc_release
= nfs4_locku_release_calldata
,
4559 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4560 struct nfs_open_context
*ctx
,
4561 struct nfs4_lock_state
*lsp
,
4562 struct nfs_seqid
*seqid
)
4564 struct nfs4_unlockdata
*data
;
4565 struct rpc_message msg
= {
4566 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4567 .rpc_cred
= ctx
->cred
,
4569 struct rpc_task_setup task_setup_data
= {
4570 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4571 .rpc_message
= &msg
,
4572 .callback_ops
= &nfs4_locku_ops
,
4573 .workqueue
= nfsiod_workqueue
,
4574 .flags
= RPC_TASK_ASYNC
,
4577 /* Ensure this is an unlock - when canceling a lock, the
4578 * canceled lock is passed in, and it won't be an unlock.
4580 fl
->fl_type
= F_UNLCK
;
4582 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4584 nfs_free_seqid(seqid
);
4585 return ERR_PTR(-ENOMEM
);
4588 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4589 msg
.rpc_argp
= &data
->arg
;
4590 msg
.rpc_resp
= &data
->res
;
4591 task_setup_data
.callback_data
= data
;
4592 return rpc_run_task(&task_setup_data
);
4595 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4597 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4598 struct nfs_seqid
*seqid
;
4599 struct nfs4_lock_state
*lsp
;
4600 struct rpc_task
*task
;
4602 unsigned char fl_flags
= request
->fl_flags
;
4604 status
= nfs4_set_lock_state(state
, request
);
4605 /* Unlock _before_ we do the RPC call */
4606 request
->fl_flags
|= FL_EXISTS
;
4607 down_read(&nfsi
->rwsem
);
4608 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4609 up_read(&nfsi
->rwsem
);
4612 up_read(&nfsi
->rwsem
);
4615 /* Is this a delegated lock? */
4616 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4618 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4619 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4623 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4624 status
= PTR_ERR(task
);
4627 status
= nfs4_wait_for_completion_rpc_task(task
);
4630 request
->fl_flags
= fl_flags
;
4634 struct nfs4_lockdata
{
4635 struct nfs_lock_args arg
;
4636 struct nfs_lock_res res
;
4637 struct nfs4_lock_state
*lsp
;
4638 struct nfs_open_context
*ctx
;
4639 struct file_lock fl
;
4640 unsigned long timestamp
;
4643 struct nfs_server
*server
;
4646 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4647 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4650 struct nfs4_lockdata
*p
;
4651 struct inode
*inode
= lsp
->ls_state
->inode
;
4652 struct nfs_server
*server
= NFS_SERVER(inode
);
4654 p
= kzalloc(sizeof(*p
), gfp_mask
);
4658 p
->arg
.fh
= NFS_FH(inode
);
4660 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4661 if (p
->arg
.open_seqid
== NULL
)
4663 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4664 if (p
->arg
.lock_seqid
== NULL
)
4665 goto out_free_seqid
;
4666 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4667 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4668 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4669 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4670 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4673 atomic_inc(&lsp
->ls_count
);
4674 p
->ctx
= get_nfs_open_context(ctx
);
4675 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4678 nfs_free_seqid(p
->arg
.open_seqid
);
4684 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4686 struct nfs4_lockdata
*data
= calldata
;
4687 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4689 dprintk("%s: begin!\n", __func__
);
4690 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4692 /* Do we need to do an open_to_lock_owner? */
4693 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4694 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4696 data
->arg
.open_stateid
= &state
->stateid
;
4697 data
->arg
.new_lock_owner
= 1;
4698 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4700 data
->arg
.new_lock_owner
= 0;
4701 data
->timestamp
= jiffies
;
4702 if (nfs4_setup_sequence(data
->server
,
4703 &data
->arg
.seq_args
,
4704 &data
->res
.seq_res
, task
))
4706 rpc_call_start(task
);
4707 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4710 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4712 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4713 nfs4_lock_prepare(task
, calldata
);
4716 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4718 struct nfs4_lockdata
*data
= calldata
;
4720 dprintk("%s: begin!\n", __func__
);
4722 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4725 data
->rpc_status
= task
->tk_status
;
4726 if (data
->arg
.new_lock_owner
!= 0) {
4727 if (data
->rpc_status
== 0)
4728 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4732 if (data
->rpc_status
== 0) {
4733 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4734 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4735 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4738 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4741 static void nfs4_lock_release(void *calldata
)
4743 struct nfs4_lockdata
*data
= calldata
;
4745 dprintk("%s: begin!\n", __func__
);
4746 nfs_free_seqid(data
->arg
.open_seqid
);
4747 if (data
->cancelled
!= 0) {
4748 struct rpc_task
*task
;
4749 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4750 data
->arg
.lock_seqid
);
4752 rpc_put_task_async(task
);
4753 dprintk("%s: cancelling lock!\n", __func__
);
4755 nfs_free_seqid(data
->arg
.lock_seqid
);
4756 nfs4_put_lock_state(data
->lsp
);
4757 put_nfs_open_context(data
->ctx
);
4759 dprintk("%s: done!\n", __func__
);
4762 static const struct rpc_call_ops nfs4_lock_ops
= {
4763 .rpc_call_prepare
= nfs4_lock_prepare
,
4764 .rpc_call_done
= nfs4_lock_done
,
4765 .rpc_release
= nfs4_lock_release
,
4768 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4769 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4770 .rpc_call_done
= nfs4_lock_done
,
4771 .rpc_release
= nfs4_lock_release
,
4774 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4777 case -NFS4ERR_ADMIN_REVOKED
:
4778 case -NFS4ERR_BAD_STATEID
:
4779 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4780 if (new_lock_owner
!= 0 ||
4781 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4782 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4784 case -NFS4ERR_STALE_STATEID
:
4785 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4786 case -NFS4ERR_EXPIRED
:
4787 nfs4_schedule_lease_recovery(server
->nfs_client
);
4791 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4793 struct nfs4_lockdata
*data
;
4794 struct rpc_task
*task
;
4795 struct rpc_message msg
= {
4796 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4797 .rpc_cred
= state
->owner
->so_cred
,
4799 struct rpc_task_setup task_setup_data
= {
4800 .rpc_client
= NFS_CLIENT(state
->inode
),
4801 .rpc_message
= &msg
,
4802 .callback_ops
= &nfs4_lock_ops
,
4803 .workqueue
= nfsiod_workqueue
,
4804 .flags
= RPC_TASK_ASYNC
,
4808 dprintk("%s: begin!\n", __func__
);
4809 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4810 fl
->fl_u
.nfs4_fl
.owner
,
4811 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4815 data
->arg
.block
= 1;
4816 if (recovery_type
> NFS_LOCK_NEW
) {
4817 if (recovery_type
== NFS_LOCK_RECLAIM
)
4818 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4819 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4821 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4822 msg
.rpc_argp
= &data
->arg
;
4823 msg
.rpc_resp
= &data
->res
;
4824 task_setup_data
.callback_data
= data
;
4825 task
= rpc_run_task(&task_setup_data
);
4827 return PTR_ERR(task
);
4828 ret
= nfs4_wait_for_completion_rpc_task(task
);
4830 ret
= data
->rpc_status
;
4832 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4833 data
->arg
.new_lock_owner
, ret
);
4835 data
->cancelled
= 1;
4837 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4841 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4843 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4844 struct nfs4_exception exception
= {
4845 .inode
= state
->inode
,
4850 /* Cache the lock if possible... */
4851 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4853 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4854 if (err
!= -NFS4ERR_DELAY
)
4856 nfs4_handle_exception(server
, err
, &exception
);
4857 } while (exception
.retry
);
4861 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4863 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4864 struct nfs4_exception exception
= {
4865 .inode
= state
->inode
,
4869 err
= nfs4_set_lock_state(state
, request
);
4873 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4875 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4879 case -NFS4ERR_GRACE
:
4880 case -NFS4ERR_DELAY
:
4881 nfs4_handle_exception(server
, err
, &exception
);
4884 } while (exception
.retry
);
4889 #if defined(CONFIG_NFS_V4_1)
4891 * nfs41_check_expired_locks - possibly free a lock stateid
4893 * @state: NFSv4 state for an inode
4895 * Returns NFS_OK if recovery for this stateid is now finished.
4896 * Otherwise a negative NFS4ERR value is returned.
4898 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4900 int status
, ret
= -NFS4ERR_BAD_STATEID
;
4901 struct nfs4_lock_state
*lsp
;
4902 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4904 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4905 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
4906 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4907 if (status
!= NFS_OK
) {
4908 /* Free the stateid unless the server
4909 * informs us the stateid is unrecognized. */
4910 if (status
!= -NFS4ERR_BAD_STATEID
)
4911 nfs41_free_stateid(server
,
4913 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
4922 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4924 int status
= NFS_OK
;
4926 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4927 status
= nfs41_check_expired_locks(state
);
4928 if (status
!= NFS_OK
)
4929 status
= nfs4_lock_expired(state
, request
);
4934 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4936 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4937 unsigned char fl_flags
= request
->fl_flags
;
4938 int status
= -ENOLCK
;
4940 if ((fl_flags
& FL_POSIX
) &&
4941 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4943 /* Is this a delegated open? */
4944 status
= nfs4_set_lock_state(state
, request
);
4947 request
->fl_flags
|= FL_ACCESS
;
4948 status
= do_vfs_lock(request
->fl_file
, request
);
4951 down_read(&nfsi
->rwsem
);
4952 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4953 /* Yes: cache locks! */
4954 /* ...but avoid races with delegation recall... */
4955 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4956 status
= do_vfs_lock(request
->fl_file
, request
);
4959 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4962 /* Note: we always want to sleep here! */
4963 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4964 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4965 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4966 "manager!\n", __func__
);
4968 up_read(&nfsi
->rwsem
);
4970 request
->fl_flags
= fl_flags
;
4974 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4976 struct nfs4_exception exception
= {
4978 .inode
= state
->inode
,
4983 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4984 if (err
== -NFS4ERR_DENIED
)
4986 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4988 } while (exception
.retry
);
4993 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4995 struct nfs_open_context
*ctx
;
4996 struct nfs4_state
*state
;
4997 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5000 /* verify open state */
5001 ctx
= nfs_file_open_context(filp
);
5004 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5007 if (IS_GETLK(cmd
)) {
5009 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5013 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5016 if (request
->fl_type
== F_UNLCK
) {
5018 return nfs4_proc_unlck(state
, cmd
, request
);
5025 * Don't rely on the VFS having checked the file open mode,
5026 * since it won't do this for flock() locks.
5028 switch (request
->fl_type
) {
5030 if (!(filp
->f_mode
& FMODE_READ
))
5034 if (!(filp
->f_mode
& FMODE_WRITE
))
5039 status
= nfs4_proc_setlk(state
, cmd
, request
);
5040 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5042 timeout
= nfs4_set_lock_task_retry(timeout
);
5043 status
= -ERESTARTSYS
;
5046 } while(status
< 0);
5050 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
5052 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5053 struct nfs4_exception exception
= { };
5056 err
= nfs4_set_lock_state(state
, fl
);
5060 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5063 printk(KERN_ERR
"NFS: %s: unhandled error "
5064 "%d.\n", __func__
, err
);
5068 case -NFS4ERR_EXPIRED
:
5069 nfs4_schedule_stateid_recovery(server
, state
);
5070 case -NFS4ERR_STALE_CLIENTID
:
5071 case -NFS4ERR_STALE_STATEID
:
5072 nfs4_schedule_lease_recovery(server
->nfs_client
);
5074 case -NFS4ERR_BADSESSION
:
5075 case -NFS4ERR_BADSLOT
:
5076 case -NFS4ERR_BAD_HIGH_SLOT
:
5077 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
5078 case -NFS4ERR_DEADSESSION
:
5079 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
5083 * The show must go on: exit, but mark the
5084 * stateid as needing recovery.
5086 case -NFS4ERR_DELEG_REVOKED
:
5087 case -NFS4ERR_ADMIN_REVOKED
:
5088 case -NFS4ERR_BAD_STATEID
:
5089 case -NFS4ERR_OPENMODE
:
5090 nfs4_schedule_stateid_recovery(server
, state
);
5095 * User RPCSEC_GSS context has expired.
5096 * We cannot recover this stateid now, so
5097 * skip it and allow recovery thread to
5103 case -NFS4ERR_DENIED
:
5104 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
5107 case -NFS4ERR_DELAY
:
5110 err
= nfs4_handle_exception(server
, err
, &exception
);
5111 } while (exception
.retry
);
5116 struct nfs_release_lockowner_data
{
5117 struct nfs4_lock_state
*lsp
;
5118 struct nfs_server
*server
;
5119 struct nfs_release_lockowner_args args
;
5122 static void nfs4_release_lockowner_release(void *calldata
)
5124 struct nfs_release_lockowner_data
*data
= calldata
;
5125 nfs4_free_lock_state(data
->server
, data
->lsp
);
5129 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5130 .rpc_release
= nfs4_release_lockowner_release
,
5133 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
5135 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
5136 struct nfs_release_lockowner_data
*data
;
5137 struct rpc_message msg
= {
5138 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5141 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5143 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5147 data
->server
= server
;
5148 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5149 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5150 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5151 msg
.rpc_argp
= &data
->args
;
5152 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5156 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5158 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5159 const void *buf
, size_t buflen
,
5160 int flags
, int type
)
5162 if (strcmp(key
, "") != 0)
5165 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5168 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5169 void *buf
, size_t buflen
, int type
)
5171 if (strcmp(key
, "") != 0)
5174 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5177 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5178 size_t list_len
, const char *name
,
5179 size_t name_len
, int type
)
5181 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5183 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5186 if (list
&& len
<= list_len
)
5187 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5192 * nfs_fhget will use either the mounted_on_fileid or the fileid
5194 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5196 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5197 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5198 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5199 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5202 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5203 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5204 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5208 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5209 const struct qstr
*name
,
5210 struct nfs4_fs_locations
*fs_locations
,
5213 struct nfs_server
*server
= NFS_SERVER(dir
);
5215 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5217 struct nfs4_fs_locations_arg args
= {
5218 .dir_fh
= NFS_FH(dir
),
5223 struct nfs4_fs_locations_res res
= {
5224 .fs_locations
= fs_locations
,
5226 struct rpc_message msg
= {
5227 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5233 dprintk("%s: start\n", __func__
);
5235 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5236 * is not supported */
5237 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5238 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5240 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5242 nfs_fattr_init(&fs_locations
->fattr
);
5243 fs_locations
->server
= server
;
5244 fs_locations
->nlocations
= 0;
5245 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5246 dprintk("%s: returned status = %d\n", __func__
, status
);
5250 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5251 const struct qstr
*name
,
5252 struct nfs4_fs_locations
*fs_locations
,
5255 struct nfs4_exception exception
= { };
5258 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5259 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5261 } while (exception
.retry
);
5265 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5268 struct nfs4_secinfo_arg args
= {
5269 .dir_fh
= NFS_FH(dir
),
5272 struct nfs4_secinfo_res res
= {
5275 struct rpc_message msg
= {
5276 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5281 dprintk("NFS call secinfo %s\n", name
->name
);
5282 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5283 dprintk("NFS reply secinfo: %d\n", status
);
5287 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5288 struct nfs4_secinfo_flavors
*flavors
)
5290 struct nfs4_exception exception
= { };
5293 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5294 _nfs4_proc_secinfo(dir
, name
, flavors
),
5296 } while (exception
.retry
);
5300 #ifdef CONFIG_NFS_V4_1
5302 * Check the exchange flags returned by the server for invalid flags, having
5303 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5306 static int nfs4_check_cl_exchange_flags(u32 flags
)
5308 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5310 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5311 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5313 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5317 return -NFS4ERR_INVAL
;
5321 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5322 struct nfs41_server_scope
*b
)
5324 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5325 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5332 * nfs4_proc_bind_conn_to_session()
5334 * The 4.1 client currently uses the same TCP connection for the
5335 * fore and backchannel.
5337 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5340 struct nfs41_bind_conn_to_session_res res
;
5341 struct rpc_message msg
= {
5343 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5349 dprintk("--> %s\n", __func__
);
5350 BUG_ON(clp
== NULL
);
5352 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5353 if (unlikely(res
.session
== NULL
)) {
5358 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5360 if (memcmp(res
.session
->sess_id
.data
,
5361 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5362 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5366 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5367 dprintk("NFS: %s: Unexpected direction from server\n",
5372 if (res
.use_conn_in_rdma_mode
) {
5373 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5382 dprintk("<-- %s status= %d\n", __func__
, status
);
5387 * nfs4_proc_exchange_id()
5389 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5391 * Since the clientid has expired, all compounds using sessions
5392 * associated with the stale clientid will be returning
5393 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5394 * be in some phase of session reset.
5396 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5398 nfs4_verifier verifier
;
5399 struct nfs41_exchange_id_args args
= {
5400 .verifier
= &verifier
,
5402 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5404 struct nfs41_exchange_id_res res
= {
5408 struct rpc_message msg
= {
5409 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5415 nfs4_init_boot_verifier(clp
, &verifier
);
5416 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5418 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5419 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5420 args
.id_len
, args
.id
);
5422 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5424 if (unlikely(res
.server_owner
== NULL
)) {
5429 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5431 if (unlikely(res
.server_scope
== NULL
)) {
5433 goto out_server_owner
;
5436 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5437 if (unlikely(res
.impl_id
== NULL
)) {
5439 goto out_server_scope
;
5442 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5444 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5447 clp
->cl_clientid
= res
.clientid
;
5448 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5449 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5450 clp
->cl_seqid
= res
.seqid
;
5452 kfree(clp
->cl_serverowner
);
5453 clp
->cl_serverowner
= res
.server_owner
;
5454 res
.server_owner
= NULL
;
5456 /* use the most recent implementation id */
5457 kfree(clp
->cl_implid
);
5458 clp
->cl_implid
= res
.impl_id
;
5460 if (clp
->cl_serverscope
!= NULL
&&
5461 !nfs41_same_server_scope(clp
->cl_serverscope
,
5462 res
.server_scope
)) {
5463 dprintk("%s: server_scope mismatch detected\n",
5465 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5466 kfree(clp
->cl_serverscope
);
5467 clp
->cl_serverscope
= NULL
;
5470 if (clp
->cl_serverscope
== NULL
) {
5471 clp
->cl_serverscope
= res
.server_scope
;
5478 kfree(res
.server_owner
);
5480 kfree(res
.server_scope
);
5482 if (clp
->cl_implid
!= NULL
)
5483 dprintk("NFS reply exchange_id: Server Implementation ID: "
5484 "domain: %s, name: %s, date: %llu,%u\n",
5485 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5486 clp
->cl_implid
->date
.seconds
,
5487 clp
->cl_implid
->date
.nseconds
);
5488 dprintk("NFS reply exchange_id: %d\n", status
);
5492 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5493 struct rpc_cred
*cred
)
5495 struct rpc_message msg
= {
5496 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5502 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5504 dprintk("NFS: Got error %d from the server %s on "
5505 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5509 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5510 struct rpc_cred
*cred
)
5515 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5516 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5518 case -NFS4ERR_DELAY
:
5519 case -NFS4ERR_CLIENTID_BUSY
:
5529 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5531 struct rpc_cred
*cred
;
5534 if (clp
->cl_mvops
->minor_version
< 1)
5536 if (clp
->cl_exchange_flags
== 0)
5538 if (clp
->cl_preserve_clid
)
5540 cred
= nfs4_get_exchange_id_cred(clp
);
5541 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5546 case -NFS4ERR_STALE_CLIENTID
:
5547 clp
->cl_exchange_flags
= 0;
5553 struct nfs4_get_lease_time_data
{
5554 struct nfs4_get_lease_time_args
*args
;
5555 struct nfs4_get_lease_time_res
*res
;
5556 struct nfs_client
*clp
;
5559 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5563 struct nfs4_get_lease_time_data
*data
=
5564 (struct nfs4_get_lease_time_data
*)calldata
;
5566 dprintk("--> %s\n", __func__
);
5567 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5568 /* just setup sequence, do not trigger session recovery
5569 since we're invoked within one */
5570 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
5571 &data
->args
->la_seq_args
,
5572 &data
->res
->lr_seq_res
, task
);
5574 BUG_ON(ret
== -EAGAIN
);
5575 rpc_call_start(task
);
5576 dprintk("<-- %s\n", __func__
);
5580 * Called from nfs4_state_manager thread for session setup, so don't recover
5581 * from sequence operation or clientid errors.
5583 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5585 struct nfs4_get_lease_time_data
*data
=
5586 (struct nfs4_get_lease_time_data
*)calldata
;
5588 dprintk("--> %s\n", __func__
);
5589 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5591 switch (task
->tk_status
) {
5592 case -NFS4ERR_DELAY
:
5593 case -NFS4ERR_GRACE
:
5594 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5595 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5596 task
->tk_status
= 0;
5598 case -NFS4ERR_RETRY_UNCACHED_REP
:
5599 rpc_restart_call_prepare(task
);
5602 dprintk("<-- %s\n", __func__
);
5605 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5606 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5607 .rpc_call_done
= nfs4_get_lease_time_done
,
5610 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5612 struct rpc_task
*task
;
5613 struct nfs4_get_lease_time_args args
;
5614 struct nfs4_get_lease_time_res res
= {
5615 .lr_fsinfo
= fsinfo
,
5617 struct nfs4_get_lease_time_data data
= {
5622 struct rpc_message msg
= {
5623 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5627 struct rpc_task_setup task_setup
= {
5628 .rpc_client
= clp
->cl_rpcclient
,
5629 .rpc_message
= &msg
,
5630 .callback_ops
= &nfs4_get_lease_time_ops
,
5631 .callback_data
= &data
,
5632 .flags
= RPC_TASK_TIMEOUT
,
5636 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5637 dprintk("--> %s\n", __func__
);
5638 task
= rpc_run_task(&task_setup
);
5641 status
= PTR_ERR(task
);
5643 status
= task
->tk_status
;
5646 dprintk("<-- %s return %d\n", __func__
, status
);
5651 static struct nfs4_slot
*nfs4_alloc_slots(u32 max_slots
, gfp_t gfp_flags
)
5653 return kcalloc(max_slots
, sizeof(struct nfs4_slot
), gfp_flags
);
5656 static void nfs4_add_and_init_slots(struct nfs4_slot_table
*tbl
,
5657 struct nfs4_slot
*new,
5661 struct nfs4_slot
*old
= NULL
;
5664 spin_lock(&tbl
->slot_tbl_lock
);
5668 tbl
->max_slots
= max_slots
;
5670 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
5671 for (i
= 0; i
< tbl
->max_slots
; i
++)
5672 tbl
->slots
[i
].seq_nr
= ivalue
;
5673 spin_unlock(&tbl
->slot_tbl_lock
);
5678 * (re)Initialise a slot table
5680 static int nfs4_realloc_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
5683 struct nfs4_slot
*new = NULL
;
5686 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
5687 max_reqs
, tbl
->max_slots
);
5689 /* Does the newly negotiated max_reqs match the existing slot table? */
5690 if (max_reqs
!= tbl
->max_slots
) {
5691 new = nfs4_alloc_slots(max_reqs
, GFP_NOFS
);
5697 nfs4_add_and_init_slots(tbl
, new, max_reqs
, ivalue
);
5698 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5699 tbl
, tbl
->slots
, tbl
->max_slots
);
5701 dprintk("<-- %s: return %d\n", __func__
, ret
);
5705 /* Destroy the slot table */
5706 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
5708 if (session
->fc_slot_table
.slots
!= NULL
) {
5709 kfree(session
->fc_slot_table
.slots
);
5710 session
->fc_slot_table
.slots
= NULL
;
5712 if (session
->bc_slot_table
.slots
!= NULL
) {
5713 kfree(session
->bc_slot_table
.slots
);
5714 session
->bc_slot_table
.slots
= NULL
;
5720 * Initialize or reset the forechannel and backchannel tables
5722 static int nfs4_setup_session_slot_tables(struct nfs4_session
*ses
)
5724 struct nfs4_slot_table
*tbl
;
5727 dprintk("--> %s\n", __func__
);
5729 tbl
= &ses
->fc_slot_table
;
5730 status
= nfs4_realloc_slot_table(tbl
, ses
->fc_attrs
.max_reqs
, 1);
5731 if (status
) /* -ENOMEM */
5734 tbl
= &ses
->bc_slot_table
;
5735 status
= nfs4_realloc_slot_table(tbl
, ses
->bc_attrs
.max_reqs
, 0);
5736 if (status
&& tbl
->slots
== NULL
)
5737 /* Fore and back channel share a connection so get
5738 * both slot tables or neither */
5739 nfs4_destroy_slot_tables(ses
);
5743 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5745 struct nfs4_session
*session
;
5746 struct nfs4_slot_table
*tbl
;
5748 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5752 tbl
= &session
->fc_slot_table
;
5753 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5754 spin_lock_init(&tbl
->slot_tbl_lock
);
5755 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5756 init_completion(&tbl
->complete
);
5758 tbl
= &session
->bc_slot_table
;
5759 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5760 spin_lock_init(&tbl
->slot_tbl_lock
);
5761 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5762 init_completion(&tbl
->complete
);
5764 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5770 void nfs4_destroy_session(struct nfs4_session
*session
)
5772 struct rpc_xprt
*xprt
;
5773 struct rpc_cred
*cred
;
5775 cred
= nfs4_get_exchange_id_cred(session
->clp
);
5776 nfs4_proc_destroy_session(session
, cred
);
5781 xprt
= rcu_dereference(session
->clp
->cl_rpcclient
->cl_xprt
);
5783 dprintk("%s Destroy backchannel for xprt %p\n",
5785 xprt_destroy_backchannel(xprt
, NFS41_BC_MIN_CALLBACKS
);
5786 nfs4_destroy_slot_tables(session
);
5791 * Initialize the values to be used by the client in CREATE_SESSION
5792 * If nfs4_init_session set the fore channel request and response sizes,
5795 * Set the back channel max_resp_sz_cached to zero to force the client to
5796 * always set csa_cachethis to FALSE because the current implementation
5797 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5799 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5801 struct nfs4_session
*session
= args
->client
->cl_session
;
5802 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5803 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5806 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5808 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5809 /* Fore channel attributes */
5810 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5811 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5812 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5813 args
->fc_attrs
.max_reqs
= max_session_slots
;
5815 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5816 "max_ops=%u max_reqs=%u\n",
5818 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5819 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5821 /* Back channel attributes */
5822 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5823 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5824 args
->bc_attrs
.max_resp_sz_cached
= 0;
5825 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5826 args
->bc_attrs
.max_reqs
= 1;
5828 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5829 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5831 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5832 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5833 args
->bc_attrs
.max_reqs
);
5836 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5838 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5839 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5841 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5844 * Our requested max_ops is the minimum we need; we're not
5845 * prepared to break up compounds into smaller pieces than that.
5846 * So, no point even trying to continue if the server won't
5849 if (rcvd
->max_ops
< sent
->max_ops
)
5851 if (rcvd
->max_reqs
== 0)
5853 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5854 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5858 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5860 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5861 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5863 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5865 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5867 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5869 /* These would render the backchannel useless: */
5870 if (rcvd
->max_ops
!= sent
->max_ops
)
5872 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5877 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5878 struct nfs4_session
*session
)
5882 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5885 return nfs4_verify_back_channel_attrs(args
, session
);
5888 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5889 struct rpc_cred
*cred
)
5891 struct nfs4_session
*session
= clp
->cl_session
;
5892 struct nfs41_create_session_args args
= {
5894 .cb_program
= NFS4_CALLBACK
,
5896 struct nfs41_create_session_res res
= {
5899 struct rpc_message msg
= {
5900 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5907 nfs4_init_channel_attrs(&args
);
5908 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5910 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5913 /* Verify the session's negotiated channel_attrs values */
5914 status
= nfs4_verify_channel_attrs(&args
, session
);
5916 /* Increment the clientid slot sequence id */
5924 * Issues a CREATE_SESSION operation to the server.
5925 * It is the responsibility of the caller to verify the session is
5926 * expired before calling this routine.
5928 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5932 struct nfs4_session
*session
= clp
->cl_session
;
5934 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5936 status
= _nfs4_proc_create_session(clp
, cred
);
5940 /* Init or reset the session slot tables */
5941 status
= nfs4_setup_session_slot_tables(session
);
5942 dprintk("slot table setup returned %d\n", status
);
5946 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5947 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5948 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5950 dprintk("<-- %s\n", __func__
);
5955 * Issue the over-the-wire RPC DESTROY_SESSION.
5956 * The caller must serialize access to this routine.
5958 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5959 struct rpc_cred
*cred
)
5961 struct rpc_message msg
= {
5962 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5963 .rpc_argp
= session
,
5968 dprintk("--> nfs4_proc_destroy_session\n");
5970 /* session is still being setup */
5971 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5974 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5977 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5978 "Session has been destroyed regardless...\n", status
);
5980 dprintk("<-- nfs4_proc_destroy_session\n");
5985 * With sessions, the client is not marked ready until after a
5986 * successful EXCHANGE_ID and CREATE_SESSION.
5988 * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate
5989 * other versions of NFS can be tried.
5991 static int nfs41_check_session_ready(struct nfs_client
*clp
)
5995 if (clp
->cl_cons_state
== NFS_CS_SESSION_INITING
) {
5996 ret
= nfs4_client_recover_expired_lease(clp
);
6000 if (clp
->cl_cons_state
< NFS_CS_READY
)
6001 return -EPROTONOSUPPORT
;
6006 int nfs4_init_session(struct nfs_server
*server
)
6008 struct nfs_client
*clp
= server
->nfs_client
;
6009 struct nfs4_session
*session
;
6010 unsigned int rsize
, wsize
;
6012 if (!nfs4_has_session(clp
))
6015 session
= clp
->cl_session
;
6016 spin_lock(&clp
->cl_lock
);
6017 if (test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
)) {
6019 rsize
= server
->rsize
;
6021 rsize
= NFS_MAX_FILE_IO_SIZE
;
6022 wsize
= server
->wsize
;
6024 wsize
= NFS_MAX_FILE_IO_SIZE
;
6026 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
6027 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
6029 spin_unlock(&clp
->cl_lock
);
6031 return nfs41_check_session_ready(clp
);
6034 int nfs4_init_ds_session(struct nfs_client
*clp
, unsigned long lease_time
)
6036 struct nfs4_session
*session
= clp
->cl_session
;
6039 spin_lock(&clp
->cl_lock
);
6040 if (test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
)) {
6042 * Do not set NFS_CS_CHECK_LEASE_TIME instead set the
6043 * DS lease to be equal to the MDS lease.
6045 clp
->cl_lease_time
= lease_time
;
6046 clp
->cl_last_renewal
= jiffies
;
6048 spin_unlock(&clp
->cl_lock
);
6050 ret
= nfs41_check_session_ready(clp
);
6053 /* Test for the DS role */
6054 if (!is_ds_client(clp
))
6058 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
6062 * Renew the cl_session lease.
6064 struct nfs4_sequence_data
{
6065 struct nfs_client
*clp
;
6066 struct nfs4_sequence_args args
;
6067 struct nfs4_sequence_res res
;
6070 static void nfs41_sequence_release(void *data
)
6072 struct nfs4_sequence_data
*calldata
= data
;
6073 struct nfs_client
*clp
= calldata
->clp
;
6075 if (atomic_read(&clp
->cl_count
) > 1)
6076 nfs4_schedule_state_renewal(clp
);
6077 nfs_put_client(clp
);
6081 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6083 switch(task
->tk_status
) {
6084 case -NFS4ERR_DELAY
:
6085 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6088 nfs4_schedule_lease_recovery(clp
);
6093 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
6095 struct nfs4_sequence_data
*calldata
= data
;
6096 struct nfs_client
*clp
= calldata
->clp
;
6098 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
6101 if (task
->tk_status
< 0) {
6102 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
6103 if (atomic_read(&clp
->cl_count
) == 1)
6106 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
6107 rpc_restart_call_prepare(task
);
6111 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
6113 dprintk("<-- %s\n", __func__
);
6116 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6118 struct nfs4_sequence_data
*calldata
= data
;
6119 struct nfs_client
*clp
= calldata
->clp
;
6120 struct nfs4_sequence_args
*args
;
6121 struct nfs4_sequence_res
*res
;
6123 args
= task
->tk_msg
.rpc_argp
;
6124 res
= task
->tk_msg
.rpc_resp
;
6126 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
))
6128 rpc_call_start(task
);
6131 static const struct rpc_call_ops nfs41_sequence_ops
= {
6132 .rpc_call_done
= nfs41_sequence_call_done
,
6133 .rpc_call_prepare
= nfs41_sequence_prepare
,
6134 .rpc_release
= nfs41_sequence_release
,
6137 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6139 struct nfs4_sequence_data
*calldata
;
6140 struct rpc_message msg
= {
6141 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6144 struct rpc_task_setup task_setup_data
= {
6145 .rpc_client
= clp
->cl_rpcclient
,
6146 .rpc_message
= &msg
,
6147 .callback_ops
= &nfs41_sequence_ops
,
6148 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
6151 if (!atomic_inc_not_zero(&clp
->cl_count
))
6152 return ERR_PTR(-EIO
);
6153 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6154 if (calldata
== NULL
) {
6155 nfs_put_client(clp
);
6156 return ERR_PTR(-ENOMEM
);
6158 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6159 msg
.rpc_argp
= &calldata
->args
;
6160 msg
.rpc_resp
= &calldata
->res
;
6161 calldata
->clp
= clp
;
6162 task_setup_data
.callback_data
= calldata
;
6164 return rpc_run_task(&task_setup_data
);
6167 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6169 struct rpc_task
*task
;
6172 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6174 task
= _nfs41_proc_sequence(clp
, cred
);
6176 ret
= PTR_ERR(task
);
6178 rpc_put_task_async(task
);
6179 dprintk("<-- %s status=%d\n", __func__
, ret
);
6183 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6185 struct rpc_task
*task
;
6188 task
= _nfs41_proc_sequence(clp
, cred
);
6190 ret
= PTR_ERR(task
);
6193 ret
= rpc_wait_for_completion_task(task
);
6195 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6197 if (task
->tk_status
== 0)
6198 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6199 ret
= task
->tk_status
;
6203 dprintk("<-- %s status=%d\n", __func__
, ret
);
6207 struct nfs4_reclaim_complete_data
{
6208 struct nfs_client
*clp
;
6209 struct nfs41_reclaim_complete_args arg
;
6210 struct nfs41_reclaim_complete_res res
;
6213 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6215 struct nfs4_reclaim_complete_data
*calldata
= data
;
6217 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
6218 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
6219 &calldata
->arg
.seq_args
,
6220 &calldata
->res
.seq_res
, task
))
6223 rpc_call_start(task
);
6226 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6228 switch(task
->tk_status
) {
6230 case -NFS4ERR_COMPLETE_ALREADY
:
6231 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6233 case -NFS4ERR_DELAY
:
6234 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6236 case -NFS4ERR_RETRY_UNCACHED_REP
:
6239 nfs4_schedule_lease_recovery(clp
);
6244 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6246 struct nfs4_reclaim_complete_data
*calldata
= data
;
6247 struct nfs_client
*clp
= calldata
->clp
;
6248 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6250 dprintk("--> %s\n", __func__
);
6251 if (!nfs41_sequence_done(task
, res
))
6254 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6255 rpc_restart_call_prepare(task
);
6258 dprintk("<-- %s\n", __func__
);
6261 static void nfs4_free_reclaim_complete_data(void *data
)
6263 struct nfs4_reclaim_complete_data
*calldata
= data
;
6268 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6269 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6270 .rpc_call_done
= nfs4_reclaim_complete_done
,
6271 .rpc_release
= nfs4_free_reclaim_complete_data
,
6275 * Issue a global reclaim complete.
6277 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6279 struct nfs4_reclaim_complete_data
*calldata
;
6280 struct rpc_task
*task
;
6281 struct rpc_message msg
= {
6282 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6284 struct rpc_task_setup task_setup_data
= {
6285 .rpc_client
= clp
->cl_rpcclient
,
6286 .rpc_message
= &msg
,
6287 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6288 .flags
= RPC_TASK_ASYNC
,
6290 int status
= -ENOMEM
;
6292 dprintk("--> %s\n", __func__
);
6293 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6294 if (calldata
== NULL
)
6296 calldata
->clp
= clp
;
6297 calldata
->arg
.one_fs
= 0;
6299 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6300 msg
.rpc_argp
= &calldata
->arg
;
6301 msg
.rpc_resp
= &calldata
->res
;
6302 task_setup_data
.callback_data
= calldata
;
6303 task
= rpc_run_task(&task_setup_data
);
6305 status
= PTR_ERR(task
);
6308 status
= nfs4_wait_for_completion_rpc_task(task
);
6310 status
= task
->tk_status
;
6314 dprintk("<-- %s status=%d\n", __func__
, status
);
6319 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6321 struct nfs4_layoutget
*lgp
= calldata
;
6322 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6324 dprintk("--> %s\n", __func__
);
6325 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6326 * right now covering the LAYOUTGET we are about to send.
6327 * However, that is not so catastrophic, and there seems
6328 * to be no way to prevent it completely.
6330 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
6331 &lgp
->res
.seq_res
, task
))
6333 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6334 NFS_I(lgp
->args
.inode
)->layout
,
6335 lgp
->args
.ctx
->state
)) {
6336 rpc_exit(task
, NFS4_OK
);
6339 rpc_call_start(task
);
6342 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6344 struct nfs4_layoutget
*lgp
= calldata
;
6345 struct inode
*inode
= lgp
->args
.inode
;
6346 struct nfs_server
*server
= NFS_SERVER(inode
);
6347 struct pnfs_layout_hdr
*lo
;
6348 struct nfs4_state
*state
= NULL
;
6350 dprintk("--> %s\n", __func__
);
6352 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
6355 switch (task
->tk_status
) {
6358 case -NFS4ERR_LAYOUTTRYLATER
:
6359 case -NFS4ERR_RECALLCONFLICT
:
6360 task
->tk_status
= -NFS4ERR_DELAY
;
6362 case -NFS4ERR_EXPIRED
:
6363 case -NFS4ERR_BAD_STATEID
:
6364 spin_lock(&inode
->i_lock
);
6365 lo
= NFS_I(inode
)->layout
;
6366 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6367 spin_unlock(&inode
->i_lock
);
6368 /* If the open stateid was bad, then recover it. */
6369 state
= lgp
->args
.ctx
->state
;
6373 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6374 spin_unlock(&inode
->i_lock
);
6375 /* Mark the bad layout state as invalid, then
6376 * retry using the open stateid. */
6377 pnfs_free_lseg_list(&head
);
6380 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6381 rpc_restart_call_prepare(task
);
6383 dprintk("<-- %s\n", __func__
);
6386 static size_t max_response_pages(struct nfs_server
*server
)
6388 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6389 return nfs_page_array_len(0, max_resp_sz
);
6392 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6399 for (i
= 0; i
< size
; i
++) {
6402 __free_page(pages
[i
]);
6407 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6409 struct page
**pages
;
6412 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6414 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6418 for (i
= 0; i
< size
; i
++) {
6419 pages
[i
] = alloc_page(gfp_flags
);
6421 dprintk("%s: failed to allocate page\n", __func__
);
6422 nfs4_free_pages(pages
, size
);
6430 static void nfs4_layoutget_release(void *calldata
)
6432 struct nfs4_layoutget
*lgp
= calldata
;
6433 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6434 size_t max_pages
= max_response_pages(server
);
6436 dprintk("--> %s\n", __func__
);
6437 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6438 put_nfs_open_context(lgp
->args
.ctx
);
6440 dprintk("<-- %s\n", __func__
);
6443 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6444 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6445 .rpc_call_done
= nfs4_layoutget_done
,
6446 .rpc_release
= nfs4_layoutget_release
,
6449 struct pnfs_layout_segment
*
6450 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6452 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6453 size_t max_pages
= max_response_pages(server
);
6454 struct rpc_task
*task
;
6455 struct rpc_message msg
= {
6456 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6457 .rpc_argp
= &lgp
->args
,
6458 .rpc_resp
= &lgp
->res
,
6460 struct rpc_task_setup task_setup_data
= {
6461 .rpc_client
= server
->client
,
6462 .rpc_message
= &msg
,
6463 .callback_ops
= &nfs4_layoutget_call_ops
,
6464 .callback_data
= lgp
,
6465 .flags
= RPC_TASK_ASYNC
,
6467 struct pnfs_layout_segment
*lseg
= NULL
;
6470 dprintk("--> %s\n", __func__
);
6472 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6473 if (!lgp
->args
.layout
.pages
) {
6474 nfs4_layoutget_release(lgp
);
6475 return ERR_PTR(-ENOMEM
);
6477 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6479 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6480 lgp
->res
.seq_res
.sr_slot
= NULL
;
6481 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6482 task
= rpc_run_task(&task_setup_data
);
6484 return ERR_CAST(task
);
6485 status
= nfs4_wait_for_completion_rpc_task(task
);
6487 status
= task
->tk_status
;
6489 lseg
= pnfs_layout_process(lgp
);
6491 dprintk("<-- %s status=%d\n", __func__
, status
);
6493 return ERR_PTR(status
);
6498 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6500 struct nfs4_layoutreturn
*lrp
= calldata
;
6502 dprintk("--> %s\n", __func__
);
6503 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
6504 &lrp
->res
.seq_res
, task
))
6506 rpc_call_start(task
);
6509 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6511 struct nfs4_layoutreturn
*lrp
= calldata
;
6512 struct nfs_server
*server
;
6514 dprintk("--> %s\n", __func__
);
6516 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
6519 server
= NFS_SERVER(lrp
->args
.inode
);
6520 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6521 rpc_restart_call_prepare(task
);
6524 dprintk("<-- %s\n", __func__
);
6527 static void nfs4_layoutreturn_release(void *calldata
)
6529 struct nfs4_layoutreturn
*lrp
= calldata
;
6530 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6532 dprintk("--> %s\n", __func__
);
6533 spin_lock(&lo
->plh_inode
->i_lock
);
6534 if (lrp
->res
.lrs_present
)
6535 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6536 lo
->plh_block_lgets
--;
6537 spin_unlock(&lo
->plh_inode
->i_lock
);
6538 pnfs_put_layout_hdr(lrp
->args
.layout
);
6540 dprintk("<-- %s\n", __func__
);
6543 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6544 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6545 .rpc_call_done
= nfs4_layoutreturn_done
,
6546 .rpc_release
= nfs4_layoutreturn_release
,
6549 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6551 struct rpc_task
*task
;
6552 struct rpc_message msg
= {
6553 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6554 .rpc_argp
= &lrp
->args
,
6555 .rpc_resp
= &lrp
->res
,
6557 struct rpc_task_setup task_setup_data
= {
6558 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6559 .rpc_message
= &msg
,
6560 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6561 .callback_data
= lrp
,
6565 dprintk("--> %s\n", __func__
);
6566 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6567 task
= rpc_run_task(&task_setup_data
);
6569 return PTR_ERR(task
);
6570 status
= task
->tk_status
;
6571 dprintk("<-- %s status=%d\n", __func__
, status
);
6577 * Retrieve the list of Data Server devices from the MDS.
6579 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6580 const struct nfs_fh
*fh
,
6581 struct pnfs_devicelist
*devlist
)
6583 struct nfs4_getdevicelist_args args
= {
6585 .layoutclass
= server
->pnfs_curr_ld
->id
,
6587 struct nfs4_getdevicelist_res res
= {
6590 struct rpc_message msg
= {
6591 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6597 dprintk("--> %s\n", __func__
);
6598 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6600 dprintk("<-- %s status=%d\n", __func__
, status
);
6604 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6605 const struct nfs_fh
*fh
,
6606 struct pnfs_devicelist
*devlist
)
6608 struct nfs4_exception exception
= { };
6612 err
= nfs4_handle_exception(server
,
6613 _nfs4_getdevicelist(server
, fh
, devlist
),
6615 } while (exception
.retry
);
6617 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6618 err
, devlist
->num_devs
);
6622 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6625 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6627 struct nfs4_getdeviceinfo_args args
= {
6630 struct nfs4_getdeviceinfo_res res
= {
6633 struct rpc_message msg
= {
6634 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6640 dprintk("--> %s\n", __func__
);
6641 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6642 dprintk("<-- %s status=%d\n", __func__
, status
);
6647 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6649 struct nfs4_exception exception
= { };
6653 err
= nfs4_handle_exception(server
,
6654 _nfs4_proc_getdeviceinfo(server
, pdev
),
6656 } while (exception
.retry
);
6659 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6661 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6663 struct nfs4_layoutcommit_data
*data
= calldata
;
6664 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6666 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
6667 &data
->res
.seq_res
, task
))
6669 rpc_call_start(task
);
6673 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6675 struct nfs4_layoutcommit_data
*data
= calldata
;
6676 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6678 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6681 switch (task
->tk_status
) { /* Just ignore these failures */
6682 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6683 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6684 case -NFS4ERR_BADLAYOUT
: /* no layout */
6685 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6686 task
->tk_status
= 0;
6689 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6693 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6694 rpc_restart_call_prepare(task
);
6700 static void nfs4_layoutcommit_release(void *calldata
)
6702 struct nfs4_layoutcommit_data
*data
= calldata
;
6703 struct pnfs_layout_segment
*lseg
, *tmp
;
6704 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
6706 pnfs_cleanup_layoutcommit(data
);
6707 /* Matched by references in pnfs_set_layoutcommit */
6708 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
6709 list_del_init(&lseg
->pls_lc_list
);
6710 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
6712 pnfs_put_lseg(lseg
);
6715 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
6716 smp_mb__after_clear_bit();
6717 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
6719 put_rpccred(data
->cred
);
6723 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6724 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6725 .rpc_call_done
= nfs4_layoutcommit_done
,
6726 .rpc_release
= nfs4_layoutcommit_release
,
6730 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6732 struct rpc_message msg
= {
6733 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6734 .rpc_argp
= &data
->args
,
6735 .rpc_resp
= &data
->res
,
6736 .rpc_cred
= data
->cred
,
6738 struct rpc_task_setup task_setup_data
= {
6739 .task
= &data
->task
,
6740 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6741 .rpc_message
= &msg
,
6742 .callback_ops
= &nfs4_layoutcommit_ops
,
6743 .callback_data
= data
,
6744 .flags
= RPC_TASK_ASYNC
,
6746 struct rpc_task
*task
;
6749 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6750 "lbw: %llu inode %lu\n",
6751 data
->task
.tk_pid
, sync
,
6752 data
->args
.lastbytewritten
,
6753 data
->args
.inode
->i_ino
);
6755 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6756 task
= rpc_run_task(&task_setup_data
);
6758 return PTR_ERR(task
);
6761 status
= nfs4_wait_for_completion_rpc_task(task
);
6764 status
= task
->tk_status
;
6766 dprintk("%s: status %d\n", __func__
, status
);
6772 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6773 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6775 struct nfs41_secinfo_no_name_args args
= {
6776 .style
= SECINFO_STYLE_CURRENT_FH
,
6778 struct nfs4_secinfo_res res
= {
6781 struct rpc_message msg
= {
6782 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6786 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6790 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6791 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6793 struct nfs4_exception exception
= { };
6796 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6799 case -NFS4ERR_WRONGSEC
:
6800 case -NFS4ERR_NOTSUPP
:
6803 err
= nfs4_handle_exception(server
, err
, &exception
);
6805 } while (exception
.retry
);
6811 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6812 struct nfs_fsinfo
*info
)
6816 rpc_authflavor_t flavor
;
6817 struct nfs4_secinfo_flavors
*flavors
;
6819 page
= alloc_page(GFP_KERNEL
);
6825 flavors
= page_address(page
);
6826 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6829 * Fall back on "guess and check" method if
6830 * the server doesn't support SECINFO_NO_NAME
6832 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6833 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6839 flavor
= nfs_find_best_sec(flavors
);
6841 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6851 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6854 struct nfs41_test_stateid_args args
= {
6857 struct nfs41_test_stateid_res res
;
6858 struct rpc_message msg
= {
6859 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6864 dprintk("NFS call test_stateid %p\n", stateid
);
6865 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6866 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6867 if (status
!= NFS_OK
) {
6868 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6871 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6876 * nfs41_test_stateid - perform a TEST_STATEID operation
6878 * @server: server / transport on which to perform the operation
6879 * @stateid: state ID to test
6881 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6882 * Otherwise a negative NFS4ERR value is returned if the operation
6883 * failed or the state ID is not currently valid.
6885 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6887 struct nfs4_exception exception
= { };
6890 err
= _nfs41_test_stateid(server
, stateid
);
6891 if (err
!= -NFS4ERR_DELAY
)
6893 nfs4_handle_exception(server
, err
, &exception
);
6894 } while (exception
.retry
);
6898 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6900 struct nfs41_free_stateid_args args
= {
6903 struct nfs41_free_stateid_res res
;
6904 struct rpc_message msg
= {
6905 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6911 dprintk("NFS call free_stateid %p\n", stateid
);
6912 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6913 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6914 &args
.seq_args
, &res
.seq_res
, 1);
6915 dprintk("NFS reply free_stateid: %d\n", status
);
6920 * nfs41_free_stateid - perform a FREE_STATEID operation
6922 * @server: server / transport on which to perform the operation
6923 * @stateid: state ID to release
6925 * Returns NFS_OK if the server freed "stateid". Otherwise a
6926 * negative NFS4ERR value is returned.
6928 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6930 struct nfs4_exception exception
= { };
6933 err
= _nfs4_free_stateid(server
, stateid
);
6934 if (err
!= -NFS4ERR_DELAY
)
6936 nfs4_handle_exception(server
, err
, &exception
);
6937 } while (exception
.retry
);
6941 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6942 const nfs4_stateid
*s2
)
6944 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6947 if (s1
->seqid
== s2
->seqid
)
6949 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6955 #endif /* CONFIG_NFS_V4_1 */
6957 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6958 const nfs4_stateid
*s2
)
6960 return nfs4_stateid_match(s1
, s2
);
6964 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6965 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6966 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6967 .recover_open
= nfs4_open_reclaim
,
6968 .recover_lock
= nfs4_lock_reclaim
,
6969 .establish_clid
= nfs4_init_clientid
,
6970 .get_clid_cred
= nfs4_get_setclientid_cred
,
6971 .detect_trunking
= nfs40_discover_server_trunking
,
6974 #if defined(CONFIG_NFS_V4_1)
6975 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6976 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6977 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6978 .recover_open
= nfs4_open_reclaim
,
6979 .recover_lock
= nfs4_lock_reclaim
,
6980 .establish_clid
= nfs41_init_clientid
,
6981 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6982 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6983 .detect_trunking
= nfs41_discover_server_trunking
,
6985 #endif /* CONFIG_NFS_V4_1 */
6987 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6988 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6989 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6990 .recover_open
= nfs4_open_expired
,
6991 .recover_lock
= nfs4_lock_expired
,
6992 .establish_clid
= nfs4_init_clientid
,
6993 .get_clid_cred
= nfs4_get_setclientid_cred
,
6996 #if defined(CONFIG_NFS_V4_1)
6997 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6998 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6999 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7000 .recover_open
= nfs41_open_expired
,
7001 .recover_lock
= nfs41_lock_expired
,
7002 .establish_clid
= nfs41_init_clientid
,
7003 .get_clid_cred
= nfs4_get_exchange_id_cred
,
7005 #endif /* CONFIG_NFS_V4_1 */
7007 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
7008 .sched_state_renewal
= nfs4_proc_async_renew
,
7009 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
7010 .renew_lease
= nfs4_proc_renew
,
7013 #if defined(CONFIG_NFS_V4_1)
7014 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
7015 .sched_state_renewal
= nfs41_proc_async_sequence
,
7016 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
7017 .renew_lease
= nfs4_proc_sequence
,
7021 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
7023 .call_sync
= _nfs4_call_sync
,
7024 .match_stateid
= nfs4_match_stateid
,
7025 .find_root_sec
= nfs4_find_root_sec
,
7026 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
7027 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
7028 .state_renewal_ops
= &nfs40_state_renewal_ops
,
7031 #if defined(CONFIG_NFS_V4_1)
7032 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
7034 .call_sync
= _nfs4_call_sync_session
,
7035 .match_stateid
= nfs41_match_stateid
,
7036 .find_root_sec
= nfs41_find_root_sec
,
7037 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7038 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7039 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7043 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
7044 [0] = &nfs_v4_0_minor_ops
,
7045 #if defined(CONFIG_NFS_V4_1)
7046 [1] = &nfs_v4_1_minor_ops
,
7050 const struct inode_operations nfs4_dir_inode_operations
= {
7051 .create
= nfs_create
,
7052 .lookup
= nfs_lookup
,
7053 .atomic_open
= nfs_atomic_open
,
7055 .unlink
= nfs_unlink
,
7056 .symlink
= nfs_symlink
,
7060 .rename
= nfs_rename
,
7061 .permission
= nfs_permission
,
7062 .getattr
= nfs_getattr
,
7063 .setattr
= nfs_setattr
,
7064 .getxattr
= generic_getxattr
,
7065 .setxattr
= generic_setxattr
,
7066 .listxattr
= generic_listxattr
,
7067 .removexattr
= generic_removexattr
,
7070 static const struct inode_operations nfs4_file_inode_operations
= {
7071 .permission
= nfs_permission
,
7072 .getattr
= nfs_getattr
,
7073 .setattr
= nfs_setattr
,
7074 .getxattr
= generic_getxattr
,
7075 .setxattr
= generic_setxattr
,
7076 .listxattr
= generic_listxattr
,
7077 .removexattr
= generic_removexattr
,
7080 const struct nfs_rpc_ops nfs_v4_clientops
= {
7081 .version
= 4, /* protocol version */
7082 .dentry_ops
= &nfs4_dentry_operations
,
7083 .dir_inode_ops
= &nfs4_dir_inode_operations
,
7084 .file_inode_ops
= &nfs4_file_inode_operations
,
7085 .file_ops
= &nfs4_file_operations
,
7086 .getroot
= nfs4_proc_get_root
,
7087 .submount
= nfs4_submount
,
7088 .try_mount
= nfs4_try_mount
,
7089 .getattr
= nfs4_proc_getattr
,
7090 .setattr
= nfs4_proc_setattr
,
7091 .lookup
= nfs4_proc_lookup
,
7092 .access
= nfs4_proc_access
,
7093 .readlink
= nfs4_proc_readlink
,
7094 .create
= nfs4_proc_create
,
7095 .remove
= nfs4_proc_remove
,
7096 .unlink_setup
= nfs4_proc_unlink_setup
,
7097 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
7098 .unlink_done
= nfs4_proc_unlink_done
,
7099 .rename
= nfs4_proc_rename
,
7100 .rename_setup
= nfs4_proc_rename_setup
,
7101 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
7102 .rename_done
= nfs4_proc_rename_done
,
7103 .link
= nfs4_proc_link
,
7104 .symlink
= nfs4_proc_symlink
,
7105 .mkdir
= nfs4_proc_mkdir
,
7106 .rmdir
= nfs4_proc_remove
,
7107 .readdir
= nfs4_proc_readdir
,
7108 .mknod
= nfs4_proc_mknod
,
7109 .statfs
= nfs4_proc_statfs
,
7110 .fsinfo
= nfs4_proc_fsinfo
,
7111 .pathconf
= nfs4_proc_pathconf
,
7112 .set_capabilities
= nfs4_server_capabilities
,
7113 .decode_dirent
= nfs4_decode_dirent
,
7114 .read_setup
= nfs4_proc_read_setup
,
7115 .read_pageio_init
= pnfs_pageio_init_read
,
7116 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
7117 .read_done
= nfs4_read_done
,
7118 .write_setup
= nfs4_proc_write_setup
,
7119 .write_pageio_init
= pnfs_pageio_init_write
,
7120 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
7121 .write_done
= nfs4_write_done
,
7122 .commit_setup
= nfs4_proc_commit_setup
,
7123 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
7124 .commit_done
= nfs4_commit_done
,
7125 .lock
= nfs4_proc_lock
,
7126 .clear_acl_cache
= nfs4_zap_acl_attr
,
7127 .close_context
= nfs4_close_context
,
7128 .open_context
= nfs4_atomic_open
,
7129 .have_delegation
= nfs4_have_delegation
,
7130 .return_delegation
= nfs4_inode_return_delegation
,
7131 .alloc_client
= nfs4_alloc_client
,
7132 .init_client
= nfs4_init_client
,
7133 .free_client
= nfs4_free_client
,
7134 .create_server
= nfs4_create_server
,
7135 .clone_server
= nfs_clone_server
,
7138 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7139 .prefix
= XATTR_NAME_NFSV4_ACL
,
7140 .list
= nfs4_xattr_list_nfs4_acl
,
7141 .get
= nfs4_xattr_get_nfs4_acl
,
7142 .set
= nfs4_xattr_set_nfs4_acl
,
7145 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7146 &nfs4_xattr_nfs4_acl_handler
,