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/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4session.h"
69 #define NFSDBG_FACILITY NFSDBG_PROC
71 #define NFS4_POLL_RETRY_MIN (HZ/10)
72 #define NFS4_POLL_RETRY_MAX (15*HZ)
75 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
76 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
77 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
78 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
79 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
80 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*);
81 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
82 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
83 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
84 struct nfs4_state
*state
);
85 #ifdef CONFIG_NFS_V4_1
86 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*);
87 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*);
89 /* Prevent leaks of NFSv4 errors into userland */
90 static int nfs4_map_errors(int err
)
95 case -NFS4ERR_RESOURCE
:
97 case -NFS4ERR_WRONGSEC
:
99 case -NFS4ERR_BADOWNER
:
100 case -NFS4ERR_BADNAME
:
102 case -NFS4ERR_SHARE_DENIED
:
104 case -NFS4ERR_MINOR_VERS_MISMATCH
:
105 return -EPROTONOSUPPORT
;
106 case -NFS4ERR_ACCESS
:
109 dprintk("%s could not handle NFSv4 error %d\n",
117 * This is our standard bitmap for GETATTR requests.
119 const u32 nfs4_fattr_bitmap
[3] = {
121 | FATTR4_WORD0_CHANGE
124 | FATTR4_WORD0_FILEID
,
126 | FATTR4_WORD1_NUMLINKS
128 | FATTR4_WORD1_OWNER_GROUP
129 | FATTR4_WORD1_RAWDEV
130 | FATTR4_WORD1_SPACE_USED
131 | FATTR4_WORD1_TIME_ACCESS
132 | FATTR4_WORD1_TIME_METADATA
133 | FATTR4_WORD1_TIME_MODIFY
136 static const u32 nfs4_pnfs_open_bitmap
[3] = {
138 | FATTR4_WORD0_CHANGE
141 | FATTR4_WORD0_FILEID
,
143 | FATTR4_WORD1_NUMLINKS
145 | FATTR4_WORD1_OWNER_GROUP
146 | FATTR4_WORD1_RAWDEV
147 | FATTR4_WORD1_SPACE_USED
148 | FATTR4_WORD1_TIME_ACCESS
149 | FATTR4_WORD1_TIME_METADATA
150 | FATTR4_WORD1_TIME_MODIFY
,
151 FATTR4_WORD2_MDSTHRESHOLD
154 static const u32 nfs4_open_noattr_bitmap
[3] = {
156 | FATTR4_WORD0_CHANGE
157 | FATTR4_WORD0_FILEID
,
160 const u32 nfs4_statfs_bitmap
[2] = {
161 FATTR4_WORD0_FILES_AVAIL
162 | FATTR4_WORD0_FILES_FREE
163 | FATTR4_WORD0_FILES_TOTAL
,
164 FATTR4_WORD1_SPACE_AVAIL
165 | FATTR4_WORD1_SPACE_FREE
166 | FATTR4_WORD1_SPACE_TOTAL
169 const u32 nfs4_pathconf_bitmap
[2] = {
171 | FATTR4_WORD0_MAXNAME
,
175 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
176 | FATTR4_WORD0_MAXREAD
177 | FATTR4_WORD0_MAXWRITE
178 | FATTR4_WORD0_LEASE_TIME
,
179 FATTR4_WORD1_TIME_DELTA
180 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
181 FATTR4_WORD2_LAYOUT_BLKSIZE
184 const u32 nfs4_fs_locations_bitmap
[2] = {
186 | FATTR4_WORD0_CHANGE
189 | FATTR4_WORD0_FILEID
190 | FATTR4_WORD0_FS_LOCATIONS
,
192 | FATTR4_WORD1_NUMLINKS
194 | FATTR4_WORD1_OWNER_GROUP
195 | FATTR4_WORD1_RAWDEV
196 | FATTR4_WORD1_SPACE_USED
197 | FATTR4_WORD1_TIME_ACCESS
198 | FATTR4_WORD1_TIME_METADATA
199 | FATTR4_WORD1_TIME_MODIFY
200 | FATTR4_WORD1_MOUNTED_ON_FILEID
203 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
204 struct nfs4_readdir_arg
*readdir
)
209 readdir
->cookie
= cookie
;
210 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
215 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
220 * NFSv4 servers do not return entries for '.' and '..'
221 * Therefore, we fake these entries here. We let '.'
222 * have cookie 0 and '..' have cookie 1. Note that
223 * when talking to the server, we always send cookie 0
226 start
= p
= kmap_atomic(*readdir
->pages
);
229 *p
++ = xdr_one
; /* next */
230 *p
++ = xdr_zero
; /* cookie, first word */
231 *p
++ = xdr_one
; /* cookie, second word */
232 *p
++ = xdr_one
; /* entry len */
233 memcpy(p
, ".\0\0\0", 4); /* entry */
235 *p
++ = xdr_one
; /* bitmap length */
236 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
237 *p
++ = htonl(8); /* attribute buffer length */
238 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
241 *p
++ = xdr_one
; /* next */
242 *p
++ = xdr_zero
; /* cookie, first word */
243 *p
++ = xdr_two
; /* cookie, second word */
244 *p
++ = xdr_two
; /* entry len */
245 memcpy(p
, "..\0\0", 4); /* entry */
247 *p
++ = xdr_one
; /* bitmap length */
248 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
249 *p
++ = htonl(8); /* attribute buffer length */
250 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
252 readdir
->pgbase
= (char *)p
- (char *)start
;
253 readdir
->count
-= readdir
->pgbase
;
254 kunmap_atomic(start
);
257 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
264 *timeout
= NFS4_POLL_RETRY_MIN
;
265 if (*timeout
> NFS4_POLL_RETRY_MAX
)
266 *timeout
= NFS4_POLL_RETRY_MAX
;
267 freezable_schedule_timeout_killable(*timeout
);
268 if (fatal_signal_pending(current
))
274 /* This is the error handling routine for processes that are allowed
277 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
279 struct nfs_client
*clp
= server
->nfs_client
;
280 struct nfs4_state
*state
= exception
->state
;
281 struct inode
*inode
= exception
->inode
;
284 exception
->retry
= 0;
288 case -NFS4ERR_OPENMODE
:
289 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
290 nfs4_inode_return_delegation(inode
);
291 exception
->retry
= 1;
296 nfs4_schedule_stateid_recovery(server
, state
);
297 goto wait_on_recovery
;
298 case -NFS4ERR_DELEG_REVOKED
:
299 case -NFS4ERR_ADMIN_REVOKED
:
300 case -NFS4ERR_BAD_STATEID
:
303 nfs_remove_bad_delegation(state
->inode
);
304 nfs4_schedule_stateid_recovery(server
, state
);
305 goto wait_on_recovery
;
306 case -NFS4ERR_EXPIRED
:
308 nfs4_schedule_stateid_recovery(server
, state
);
309 case -NFS4ERR_STALE_STATEID
:
310 case -NFS4ERR_STALE_CLIENTID
:
311 nfs4_schedule_lease_recovery(clp
);
312 goto wait_on_recovery
;
313 #if defined(CONFIG_NFS_V4_1)
314 case -NFS4ERR_BADSESSION
:
315 case -NFS4ERR_BADSLOT
:
316 case -NFS4ERR_BAD_HIGH_SLOT
:
317 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
318 case -NFS4ERR_DEADSESSION
:
319 case -NFS4ERR_SEQ_FALSE_RETRY
:
320 case -NFS4ERR_SEQ_MISORDERED
:
321 dprintk("%s ERROR: %d Reset session\n", __func__
,
323 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
324 goto wait_on_recovery
;
325 #endif /* defined(CONFIG_NFS_V4_1) */
326 case -NFS4ERR_FILE_OPEN
:
327 if (exception
->timeout
> HZ
) {
328 /* We have retried a decent amount, time to
337 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
340 case -NFS4ERR_RETRY_UNCACHED_REP
:
341 case -NFS4ERR_OLD_STATEID
:
342 exception
->retry
= 1;
344 case -NFS4ERR_BADOWNER
:
345 /* The following works around a Linux server bug! */
346 case -NFS4ERR_BADNAME
:
347 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
348 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
349 exception
->retry
= 1;
350 printk(KERN_WARNING
"NFS: v4 server %s "
351 "does not accept raw "
353 "Reenabling the idmapper.\n",
354 server
->nfs_client
->cl_hostname
);
357 /* We failed to handle the error */
358 return nfs4_map_errors(ret
);
360 ret
= nfs4_wait_clnt_recover(clp
);
362 exception
->retry
= 1;
367 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
369 spin_lock(&clp
->cl_lock
);
370 if (time_before(clp
->cl_last_renewal
,timestamp
))
371 clp
->cl_last_renewal
= timestamp
;
372 spin_unlock(&clp
->cl_lock
);
375 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
377 do_renew_lease(server
->nfs_client
, timestamp
);
380 #if defined(CONFIG_NFS_V4_1)
382 bool nfs4_set_task_privileged(struct rpc_task
*task
, void *dummy
)
384 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
388 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
390 struct nfs4_session
*session
;
391 struct nfs4_slot_table
*tbl
;
394 /* just wake up the next guy waiting since
395 * we may have not consumed a slot after all */
396 dprintk("%s: No slot\n", __func__
);
399 tbl
= res
->sr_slot
->table
;
400 session
= tbl
->session
;
402 spin_lock(&tbl
->slot_tbl_lock
);
403 nfs4_free_slot(tbl
, res
->sr_slot
);
404 if (!nfs4_session_draining(session
))
405 rpc_wake_up_first(&tbl
->slot_tbl_waitq
,
406 nfs4_set_task_privileged
, NULL
);
407 spin_unlock(&tbl
->slot_tbl_lock
);
411 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
413 struct nfs4_session
*session
;
414 struct nfs4_slot
*slot
;
415 unsigned long timestamp
;
416 struct nfs_client
*clp
;
419 * sr_status remains 1 if an RPC level error occurred. The server
420 * may or may not have processed the sequence operation..
421 * Proceed as if the server received and processed the sequence
424 if (res
->sr_status
== 1)
425 res
->sr_status
= NFS_OK
;
427 /* don't increment the sequence number if the task wasn't sent */
428 if (!RPC_WAS_SENT(task
))
432 session
= slot
->table
->session
;
434 /* Check the SEQUENCE operation status */
435 switch (res
->sr_status
) {
437 /* Update the slot's sequence and clientid lease timer */
439 timestamp
= slot
->renewal_time
;
441 do_renew_lease(clp
, timestamp
);
442 /* Check sequence flags */
443 if (res
->sr_status_flags
!= 0)
444 nfs4_schedule_lease_recovery(clp
);
445 nfs41_update_target_slotid(slot
->table
, slot
, res
);
448 /* The server detected a resend of the RPC call and
449 * returned NFS4ERR_DELAY as per Section 2.10.6.2
452 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
458 /* Just update the slot sequence no. */
462 /* The session may be reset by one of the error handlers. */
463 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
464 nfs41_sequence_free_slot(res
);
467 if (!rpc_restart_call(task
))
469 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
473 static int nfs4_sequence_done(struct rpc_task
*task
,
474 struct nfs4_sequence_res
*res
)
476 if (res
->sr_slot
== NULL
)
478 return nfs41_sequence_done(task
, res
);
481 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
482 struct nfs4_sequence_res
*res
, int cache_reply
)
484 args
->sa_slot
= NULL
;
485 args
->sa_cache_this
= 0;
487 args
->sa_cache_this
= 1;
491 int nfs41_setup_sequence(struct nfs4_session
*session
,
492 struct nfs4_sequence_args
*args
,
493 struct nfs4_sequence_res
*res
,
494 struct rpc_task
*task
)
496 struct nfs4_slot
*slot
;
497 struct nfs4_slot_table
*tbl
;
499 dprintk("--> %s\n", __func__
);
500 /* slot already allocated? */
501 if (res
->sr_slot
!= NULL
)
504 tbl
= &session
->fc_slot_table
;
506 task
->tk_timeout
= 0;
508 spin_lock(&tbl
->slot_tbl_lock
);
509 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
510 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
511 /* The state manager will wait until the slot table is empty */
512 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
513 spin_unlock(&tbl
->slot_tbl_lock
);
514 dprintk("%s session is draining\n", __func__
);
518 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
519 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
520 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
521 spin_unlock(&tbl
->slot_tbl_lock
);
522 dprintk("%s enforce FIFO order\n", __func__
);
526 slot
= nfs4_alloc_slot(tbl
);
528 /* If out of memory, try again in 1/4 second */
529 if (slot
== ERR_PTR(-ENOMEM
))
530 task
->tk_timeout
= HZ
>> 2;
531 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
532 spin_unlock(&tbl
->slot_tbl_lock
);
533 dprintk("<-- %s: no free slots\n", __func__
);
536 spin_unlock(&tbl
->slot_tbl_lock
);
538 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
540 args
->sa_slot
= slot
;
542 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
,
543 slot
->slot_nr
, slot
->seq_nr
);
546 res
->sr_status_flags
= 0;
548 * sr_status is only set in decode_sequence, and so will remain
549 * set to 1 if an rpc level failure occurs.
554 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
556 int nfs4_setup_sequence(const struct nfs_server
*server
,
557 struct nfs4_sequence_args
*args
,
558 struct nfs4_sequence_res
*res
,
559 struct rpc_task
*task
)
561 struct nfs4_session
*session
= nfs4_get_session(server
);
567 dprintk("--> %s clp %p session %p sr_slot %d\n",
568 __func__
, session
->clp
, session
, res
->sr_slot
?
569 res
->sr_slot
->slot_nr
: -1);
571 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
573 dprintk("<-- %s status=%d\n", __func__
, ret
);
577 struct nfs41_call_sync_data
{
578 const struct nfs_server
*seq_server
;
579 struct nfs4_sequence_args
*seq_args
;
580 struct nfs4_sequence_res
*seq_res
;
583 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
585 struct nfs41_call_sync_data
*data
= calldata
;
587 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
589 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
590 data
->seq_res
, task
))
592 rpc_call_start(task
);
595 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
597 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
598 nfs41_call_sync_prepare(task
, calldata
);
601 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
603 struct nfs41_call_sync_data
*data
= calldata
;
605 nfs41_sequence_done(task
, data
->seq_res
);
608 static const struct rpc_call_ops nfs41_call_sync_ops
= {
609 .rpc_call_prepare
= nfs41_call_sync_prepare
,
610 .rpc_call_done
= nfs41_call_sync_done
,
613 static const struct rpc_call_ops nfs41_call_priv_sync_ops
= {
614 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
615 .rpc_call_done
= nfs41_call_sync_done
,
618 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
619 struct nfs_server
*server
,
620 struct rpc_message
*msg
,
621 struct nfs4_sequence_args
*args
,
622 struct nfs4_sequence_res
*res
,
626 struct rpc_task
*task
;
627 struct nfs41_call_sync_data data
= {
628 .seq_server
= server
,
632 struct rpc_task_setup task_setup
= {
635 .callback_ops
= &nfs41_call_sync_ops
,
636 .callback_data
= &data
640 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
641 task
= rpc_run_task(&task_setup
);
645 ret
= task
->tk_status
;
651 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
652 struct nfs_server
*server
,
653 struct rpc_message
*msg
,
654 struct nfs4_sequence_args
*args
,
655 struct nfs4_sequence_res
*res
,
658 nfs41_init_sequence(args
, res
, cache_reply
);
659 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, 0);
664 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
665 struct nfs4_sequence_res
*res
, int cache_reply
)
669 static int nfs4_sequence_done(struct rpc_task
*task
,
670 struct nfs4_sequence_res
*res
)
674 #endif /* CONFIG_NFS_V4_1 */
676 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
677 struct nfs_server
*server
,
678 struct rpc_message
*msg
,
679 struct nfs4_sequence_args
*args
,
680 struct nfs4_sequence_res
*res
,
683 nfs41_init_sequence(args
, res
, cache_reply
);
684 return rpc_call_sync(clnt
, msg
, 0);
688 int nfs4_call_sync(struct rpc_clnt
*clnt
,
689 struct nfs_server
*server
,
690 struct rpc_message
*msg
,
691 struct nfs4_sequence_args
*args
,
692 struct nfs4_sequence_res
*res
,
695 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
696 args
, res
, cache_reply
);
699 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
701 struct nfs_inode
*nfsi
= NFS_I(dir
);
703 spin_lock(&dir
->i_lock
);
704 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
705 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
706 nfs_force_lookup_revalidate(dir
);
707 dir
->i_version
= cinfo
->after
;
708 spin_unlock(&dir
->i_lock
);
711 struct nfs4_opendata
{
713 struct nfs_openargs o_arg
;
714 struct nfs_openres o_res
;
715 struct nfs_open_confirmargs c_arg
;
716 struct nfs_open_confirmres c_res
;
717 struct nfs4_string owner_name
;
718 struct nfs4_string group_name
;
719 struct nfs_fattr f_attr
;
721 struct dentry
*dentry
;
722 struct nfs4_state_owner
*owner
;
723 struct nfs4_state
*state
;
725 unsigned long timestamp
;
726 unsigned int rpc_done
: 1;
732 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
734 p
->o_res
.f_attr
= &p
->f_attr
;
735 p
->o_res
.seqid
= p
->o_arg
.seqid
;
736 p
->c_res
.seqid
= p
->c_arg
.seqid
;
737 p
->o_res
.server
= p
->o_arg
.server
;
738 p
->o_res
.access_request
= p
->o_arg
.access
;
739 nfs_fattr_init(&p
->f_attr
);
740 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
743 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
744 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
745 const struct iattr
*attrs
,
748 struct dentry
*parent
= dget_parent(dentry
);
749 struct inode
*dir
= parent
->d_inode
;
750 struct nfs_server
*server
= NFS_SERVER(dir
);
751 struct nfs4_opendata
*p
;
753 p
= kzalloc(sizeof(*p
), gfp_mask
);
756 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
757 if (p
->o_arg
.seqid
== NULL
)
759 nfs_sb_active(dentry
->d_sb
);
760 p
->dentry
= dget(dentry
);
763 atomic_inc(&sp
->so_count
);
764 p
->o_arg
.fh
= NFS_FH(dir
);
765 p
->o_arg
.open_flags
= flags
;
766 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
767 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
768 * will return permission denied for all bits until close */
769 if (!(flags
& O_EXCL
)) {
770 /* ask server to check for all possible rights as results
772 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
773 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
775 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
776 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
777 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
778 p
->o_arg
.name
= &dentry
->d_name
;
779 p
->o_arg
.server
= server
;
780 p
->o_arg
.bitmask
= server
->attr_bitmask
;
781 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
782 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
783 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
786 p
->o_arg
.u
.attrs
= &p
->attrs
;
787 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
790 verf
[1] = current
->pid
;
791 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
792 sizeof(p
->o_arg
.u
.verifier
.data
));
794 p
->c_arg
.fh
= &p
->o_res
.fh
;
795 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
796 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
797 nfs4_init_opendata_res(p
);
807 static void nfs4_opendata_free(struct kref
*kref
)
809 struct nfs4_opendata
*p
= container_of(kref
,
810 struct nfs4_opendata
, kref
);
811 struct super_block
*sb
= p
->dentry
->d_sb
;
813 nfs_free_seqid(p
->o_arg
.seqid
);
814 if (p
->state
!= NULL
)
815 nfs4_put_open_state(p
->state
);
816 nfs4_put_state_owner(p
->owner
);
820 nfs_fattr_free_names(&p
->f_attr
);
824 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
827 kref_put(&p
->kref
, nfs4_opendata_free
);
830 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
834 ret
= rpc_wait_for_completion_task(task
);
838 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
842 if (open_mode
& (O_EXCL
|O_TRUNC
))
844 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
846 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
847 && state
->n_rdonly
!= 0;
850 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
851 && state
->n_wronly
!= 0;
853 case FMODE_READ
|FMODE_WRITE
:
854 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
855 && state
->n_rdwr
!= 0;
861 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
863 if (delegation
== NULL
)
865 if ((delegation
->type
& fmode
) != fmode
)
867 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
869 nfs_mark_delegation_referenced(delegation
);
873 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
882 case FMODE_READ
|FMODE_WRITE
:
885 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
888 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
890 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
891 nfs4_stateid_copy(&state
->stateid
, stateid
);
892 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
895 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
898 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
900 case FMODE_READ
|FMODE_WRITE
:
901 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
905 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
907 write_seqlock(&state
->seqlock
);
908 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
909 write_sequnlock(&state
->seqlock
);
912 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
915 * Protect the call to nfs4_state_set_mode_locked and
916 * serialise the stateid update
918 write_seqlock(&state
->seqlock
);
919 if (deleg_stateid
!= NULL
) {
920 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
921 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
923 if (open_stateid
!= NULL
)
924 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
925 write_sequnlock(&state
->seqlock
);
926 spin_lock(&state
->owner
->so_lock
);
927 update_open_stateflags(state
, fmode
);
928 spin_unlock(&state
->owner
->so_lock
);
931 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
933 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
934 struct nfs_delegation
*deleg_cur
;
937 fmode
&= (FMODE_READ
|FMODE_WRITE
);
940 deleg_cur
= rcu_dereference(nfsi
->delegation
);
941 if (deleg_cur
== NULL
)
944 spin_lock(&deleg_cur
->lock
);
945 if (nfsi
->delegation
!= deleg_cur
||
946 (deleg_cur
->type
& fmode
) != fmode
)
947 goto no_delegation_unlock
;
949 if (delegation
== NULL
)
950 delegation
= &deleg_cur
->stateid
;
951 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
952 goto no_delegation_unlock
;
954 nfs_mark_delegation_referenced(deleg_cur
);
955 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
957 no_delegation_unlock
:
958 spin_unlock(&deleg_cur
->lock
);
962 if (!ret
&& open_stateid
!= NULL
) {
963 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
971 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
973 struct nfs_delegation
*delegation
;
976 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
977 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
982 nfs4_inode_return_delegation(inode
);
985 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
987 struct nfs4_state
*state
= opendata
->state
;
988 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
989 struct nfs_delegation
*delegation
;
990 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
991 fmode_t fmode
= opendata
->o_arg
.fmode
;
992 nfs4_stateid stateid
;
996 if (can_open_cached(state
, fmode
, open_mode
)) {
997 spin_lock(&state
->owner
->so_lock
);
998 if (can_open_cached(state
, fmode
, open_mode
)) {
999 update_open_stateflags(state
, fmode
);
1000 spin_unlock(&state
->owner
->so_lock
);
1001 goto out_return_state
;
1003 spin_unlock(&state
->owner
->so_lock
);
1006 delegation
= rcu_dereference(nfsi
->delegation
);
1007 if (!can_open_delegated(delegation
, fmode
)) {
1011 /* Save the delegation */
1012 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1014 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1019 /* Try to update the stateid using the delegation */
1020 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1021 goto out_return_state
;
1024 return ERR_PTR(ret
);
1026 atomic_inc(&state
->count
);
1031 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1033 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1034 struct nfs_delegation
*delegation
;
1035 int delegation_flags
= 0;
1038 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1040 delegation_flags
= delegation
->flags
;
1042 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1043 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1044 "returning a delegation for "
1045 "OPEN(CLAIM_DELEGATE_CUR)\n",
1047 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1048 nfs_inode_set_delegation(state
->inode
,
1049 data
->owner
->so_cred
,
1052 nfs_inode_reclaim_delegation(state
->inode
,
1053 data
->owner
->so_cred
,
1058 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1059 * and update the nfs4_state.
1061 static struct nfs4_state
*
1062 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1064 struct inode
*inode
= data
->state
->inode
;
1065 struct nfs4_state
*state
= data
->state
;
1068 if (!data
->rpc_done
) {
1069 ret
= data
->rpc_status
;
1074 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1075 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1076 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1080 state
= nfs4_get_open_state(inode
, data
->owner
);
1084 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1088 if (data
->o_res
.delegation_type
!= 0)
1089 nfs4_opendata_check_deleg(data
, state
);
1090 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1095 return ERR_PTR(ret
);
1099 static struct nfs4_state
*
1100 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1102 struct inode
*inode
;
1103 struct nfs4_state
*state
= NULL
;
1106 if (!data
->rpc_done
) {
1107 state
= nfs4_try_open_cached(data
);
1112 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1114 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1115 ret
= PTR_ERR(inode
);
1119 state
= nfs4_get_open_state(inode
, data
->owner
);
1122 if (data
->o_res
.delegation_type
!= 0)
1123 nfs4_opendata_check_deleg(data
, state
);
1124 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1132 return ERR_PTR(ret
);
1135 static struct nfs4_state
*
1136 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1138 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1139 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1140 return _nfs4_opendata_to_nfs4_state(data
);
1143 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1145 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1146 struct nfs_open_context
*ctx
;
1148 spin_lock(&state
->inode
->i_lock
);
1149 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1150 if (ctx
->state
!= state
)
1152 get_nfs_open_context(ctx
);
1153 spin_unlock(&state
->inode
->i_lock
);
1156 spin_unlock(&state
->inode
->i_lock
);
1157 return ERR_PTR(-ENOENT
);
1160 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1162 struct nfs4_opendata
*opendata
;
1164 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1165 if (opendata
== NULL
)
1166 return ERR_PTR(-ENOMEM
);
1167 opendata
->state
= state
;
1168 atomic_inc(&state
->count
);
1172 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1174 struct nfs4_state
*newstate
;
1177 opendata
->o_arg
.open_flags
= 0;
1178 opendata
->o_arg
.fmode
= fmode
;
1179 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1180 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1181 nfs4_init_opendata_res(opendata
);
1182 ret
= _nfs4_recover_proc_open(opendata
);
1185 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1186 if (IS_ERR(newstate
))
1187 return PTR_ERR(newstate
);
1188 nfs4_close_state(newstate
, fmode
);
1193 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1195 struct nfs4_state
*newstate
;
1198 /* memory barrier prior to reading state->n_* */
1199 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1201 if (state
->n_rdwr
!= 0) {
1202 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1203 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1206 if (newstate
!= state
)
1209 if (state
->n_wronly
!= 0) {
1210 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1211 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1214 if (newstate
!= state
)
1217 if (state
->n_rdonly
!= 0) {
1218 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1219 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1222 if (newstate
!= state
)
1226 * We may have performed cached opens for all three recoveries.
1227 * Check if we need to update the current stateid.
1229 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1230 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1231 write_seqlock(&state
->seqlock
);
1232 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1233 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1234 write_sequnlock(&state
->seqlock
);
1241 * reclaim state on the server after a reboot.
1243 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1245 struct nfs_delegation
*delegation
;
1246 struct nfs4_opendata
*opendata
;
1247 fmode_t delegation_type
= 0;
1250 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1251 if (IS_ERR(opendata
))
1252 return PTR_ERR(opendata
);
1253 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1254 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1256 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1257 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1258 delegation_type
= delegation
->type
;
1260 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1261 status
= nfs4_open_recover(opendata
, state
);
1262 nfs4_opendata_put(opendata
);
1266 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1268 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1269 struct nfs4_exception exception
= { };
1272 err
= _nfs4_do_open_reclaim(ctx
, state
);
1273 if (err
!= -NFS4ERR_DELAY
)
1275 nfs4_handle_exception(server
, err
, &exception
);
1276 } while (exception
.retry
);
1280 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1282 struct nfs_open_context
*ctx
;
1285 ctx
= nfs4_state_find_open_context(state
);
1287 return PTR_ERR(ctx
);
1288 ret
= nfs4_do_open_reclaim(ctx
, state
);
1289 put_nfs_open_context(ctx
);
1293 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1295 struct nfs4_opendata
*opendata
;
1298 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1299 if (IS_ERR(opendata
))
1300 return PTR_ERR(opendata
);
1301 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1302 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1303 ret
= nfs4_open_recover(opendata
, state
);
1304 nfs4_opendata_put(opendata
);
1308 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1310 struct nfs4_exception exception
= { };
1311 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1314 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1320 case -NFS4ERR_BADSESSION
:
1321 case -NFS4ERR_BADSLOT
:
1322 case -NFS4ERR_BAD_HIGH_SLOT
:
1323 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1324 case -NFS4ERR_DEADSESSION
:
1325 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1327 case -NFS4ERR_STALE_CLIENTID
:
1328 case -NFS4ERR_STALE_STATEID
:
1329 case -NFS4ERR_EXPIRED
:
1330 /* Don't recall a delegation if it was lost */
1331 nfs4_schedule_lease_recovery(server
->nfs_client
);
1335 * The show must go on: exit, but mark the
1336 * stateid as needing recovery.
1338 case -NFS4ERR_DELEG_REVOKED
:
1339 case -NFS4ERR_ADMIN_REVOKED
:
1340 case -NFS4ERR_BAD_STATEID
:
1341 nfs_inode_find_state_and_recover(state
->inode
,
1343 nfs4_schedule_stateid_recovery(server
, state
);
1346 * User RPCSEC_GSS context has expired.
1347 * We cannot recover this stateid now, so
1348 * skip it and allow recovery thread to
1355 err
= nfs4_handle_exception(server
, err
, &exception
);
1356 } while (exception
.retry
);
1361 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1363 struct nfs4_opendata
*data
= calldata
;
1365 data
->rpc_status
= task
->tk_status
;
1366 if (data
->rpc_status
== 0) {
1367 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1368 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1369 renew_lease(data
->o_res
.server
, data
->timestamp
);
1374 static void nfs4_open_confirm_release(void *calldata
)
1376 struct nfs4_opendata
*data
= calldata
;
1377 struct nfs4_state
*state
= NULL
;
1379 /* If this request hasn't been cancelled, do nothing */
1380 if (data
->cancelled
== 0)
1382 /* In case of error, no cleanup! */
1383 if (!data
->rpc_done
)
1385 state
= nfs4_opendata_to_nfs4_state(data
);
1387 nfs4_close_state(state
, data
->o_arg
.fmode
);
1389 nfs4_opendata_put(data
);
1392 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1393 .rpc_call_done
= nfs4_open_confirm_done
,
1394 .rpc_release
= nfs4_open_confirm_release
,
1398 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1400 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1402 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1403 struct rpc_task
*task
;
1404 struct rpc_message msg
= {
1405 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1406 .rpc_argp
= &data
->c_arg
,
1407 .rpc_resp
= &data
->c_res
,
1408 .rpc_cred
= data
->owner
->so_cred
,
1410 struct rpc_task_setup task_setup_data
= {
1411 .rpc_client
= server
->client
,
1412 .rpc_message
= &msg
,
1413 .callback_ops
= &nfs4_open_confirm_ops
,
1414 .callback_data
= data
,
1415 .workqueue
= nfsiod_workqueue
,
1416 .flags
= RPC_TASK_ASYNC
,
1420 kref_get(&data
->kref
);
1422 data
->rpc_status
= 0;
1423 data
->timestamp
= jiffies
;
1424 task
= rpc_run_task(&task_setup_data
);
1426 return PTR_ERR(task
);
1427 status
= nfs4_wait_for_completion_rpc_task(task
);
1429 data
->cancelled
= 1;
1432 status
= data
->rpc_status
;
1437 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1439 struct nfs4_opendata
*data
= calldata
;
1440 struct nfs4_state_owner
*sp
= data
->owner
;
1442 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1445 * Check if we still need to send an OPEN call, or if we can use
1446 * a delegation instead.
1448 if (data
->state
!= NULL
) {
1449 struct nfs_delegation
*delegation
;
1451 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1454 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1455 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1456 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1457 goto unlock_no_action
;
1460 /* Update client id. */
1461 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1462 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1463 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1464 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1465 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1467 data
->timestamp
= jiffies
;
1468 if (nfs4_setup_sequence(data
->o_arg
.server
,
1469 &data
->o_arg
.seq_args
,
1470 &data
->o_res
.seq_res
,
1472 nfs_release_seqid(data
->o_arg
.seqid
);
1474 rpc_call_start(task
);
1479 task
->tk_action
= NULL
;
1483 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1485 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1486 nfs4_open_prepare(task
, calldata
);
1489 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1491 struct nfs4_opendata
*data
= calldata
;
1493 data
->rpc_status
= task
->tk_status
;
1495 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1498 if (task
->tk_status
== 0) {
1499 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1500 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1504 data
->rpc_status
= -ELOOP
;
1507 data
->rpc_status
= -EISDIR
;
1510 data
->rpc_status
= -ENOTDIR
;
1513 renew_lease(data
->o_res
.server
, data
->timestamp
);
1514 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1515 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1520 static void nfs4_open_release(void *calldata
)
1522 struct nfs4_opendata
*data
= calldata
;
1523 struct nfs4_state
*state
= NULL
;
1525 /* If this request hasn't been cancelled, do nothing */
1526 if (data
->cancelled
== 0)
1528 /* In case of error, no cleanup! */
1529 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1531 /* In case we need an open_confirm, no cleanup! */
1532 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1534 state
= nfs4_opendata_to_nfs4_state(data
);
1536 nfs4_close_state(state
, data
->o_arg
.fmode
);
1538 nfs4_opendata_put(data
);
1541 static const struct rpc_call_ops nfs4_open_ops
= {
1542 .rpc_call_prepare
= nfs4_open_prepare
,
1543 .rpc_call_done
= nfs4_open_done
,
1544 .rpc_release
= nfs4_open_release
,
1547 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1548 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1549 .rpc_call_done
= nfs4_open_done
,
1550 .rpc_release
= nfs4_open_release
,
1553 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1555 struct inode
*dir
= data
->dir
->d_inode
;
1556 struct nfs_server
*server
= NFS_SERVER(dir
);
1557 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1558 struct nfs_openres
*o_res
= &data
->o_res
;
1559 struct rpc_task
*task
;
1560 struct rpc_message msg
= {
1561 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1564 .rpc_cred
= data
->owner
->so_cred
,
1566 struct rpc_task_setup task_setup_data
= {
1567 .rpc_client
= server
->client
,
1568 .rpc_message
= &msg
,
1569 .callback_ops
= &nfs4_open_ops
,
1570 .callback_data
= data
,
1571 .workqueue
= nfsiod_workqueue
,
1572 .flags
= RPC_TASK_ASYNC
,
1576 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1577 kref_get(&data
->kref
);
1579 data
->rpc_status
= 0;
1580 data
->cancelled
= 0;
1582 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1583 task
= rpc_run_task(&task_setup_data
);
1585 return PTR_ERR(task
);
1586 status
= nfs4_wait_for_completion_rpc_task(task
);
1588 data
->cancelled
= 1;
1591 status
= data
->rpc_status
;
1597 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1599 struct inode
*dir
= data
->dir
->d_inode
;
1600 struct nfs_openres
*o_res
= &data
->o_res
;
1603 status
= nfs4_run_open_task(data
, 1);
1604 if (status
!= 0 || !data
->rpc_done
)
1607 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1609 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1610 status
= _nfs4_proc_open_confirm(data
);
1618 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1619 struct nfs4_opendata
*opendata
,
1620 struct nfs4_state
*state
, fmode_t fmode
)
1622 struct nfs_access_entry cache
;
1625 /* access call failed or for some reason the server doesn't
1626 * support any access modes -- defer access call until later */
1627 if (opendata
->o_res
.access_supported
== 0)
1631 /* don't check MAY_WRITE - a newly created file may not have
1632 * write mode bits, but POSIX allows the creating process to write */
1633 if (fmode
& FMODE_READ
)
1635 if (fmode
& FMODE_EXEC
)
1639 cache
.jiffies
= jiffies
;
1640 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1641 nfs_access_add_cache(state
->inode
, &cache
);
1643 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1646 /* even though OPEN succeeded, access is denied. Close the file */
1647 nfs4_close_state(state
, fmode
);
1652 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1654 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1656 struct inode
*dir
= data
->dir
->d_inode
;
1657 struct nfs_server
*server
= NFS_SERVER(dir
);
1658 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1659 struct nfs_openres
*o_res
= &data
->o_res
;
1662 status
= nfs4_run_open_task(data
, 0);
1663 if (!data
->rpc_done
)
1666 if (status
== -NFS4ERR_BADNAME
&&
1667 !(o_arg
->open_flags
& O_CREAT
))
1672 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1674 if (o_arg
->open_flags
& O_CREAT
)
1675 update_changeattr(dir
, &o_res
->cinfo
);
1676 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1677 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1678 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1679 status
= _nfs4_proc_open_confirm(data
);
1683 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1684 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1688 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1690 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1695 * reclaim state on the server after a network partition.
1696 * Assumes caller holds the appropriate lock
1698 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1700 struct nfs4_opendata
*opendata
;
1703 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1704 if (IS_ERR(opendata
))
1705 return PTR_ERR(opendata
);
1706 ret
= nfs4_open_recover(opendata
, state
);
1708 d_drop(ctx
->dentry
);
1709 nfs4_opendata_put(opendata
);
1713 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1715 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1716 struct nfs4_exception exception
= { };
1720 err
= _nfs4_open_expired(ctx
, state
);
1724 case -NFS4ERR_GRACE
:
1725 case -NFS4ERR_DELAY
:
1726 nfs4_handle_exception(server
, err
, &exception
);
1729 } while (exception
.retry
);
1734 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1736 struct nfs_open_context
*ctx
;
1739 ctx
= nfs4_state_find_open_context(state
);
1741 return PTR_ERR(ctx
);
1742 ret
= nfs4_do_open_expired(ctx
, state
);
1743 put_nfs_open_context(ctx
);
1747 #if defined(CONFIG_NFS_V4_1)
1748 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1750 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1751 nfs4_stateid
*stateid
= &state
->stateid
;
1754 /* If a state reset has been done, test_stateid is unneeded */
1755 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1758 status
= nfs41_test_stateid(server
, stateid
);
1759 if (status
!= NFS_OK
) {
1760 /* Free the stateid unless the server explicitly
1761 * informs us the stateid is unrecognized. */
1762 if (status
!= -NFS4ERR_BAD_STATEID
)
1763 nfs41_free_stateid(server
, stateid
);
1764 nfs_remove_bad_delegation(state
->inode
);
1766 write_seqlock(&state
->seqlock
);
1767 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1768 write_sequnlock(&state
->seqlock
);
1769 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1774 * nfs41_check_open_stateid - possibly free an open stateid
1776 * @state: NFSv4 state for an inode
1778 * Returns NFS_OK if recovery for this stateid is now finished.
1779 * Otherwise a negative NFS4ERR value is returned.
1781 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1783 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1784 nfs4_stateid
*stateid
= &state
->open_stateid
;
1787 /* If a state reset has been done, test_stateid is unneeded */
1788 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1789 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1790 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1791 return -NFS4ERR_BAD_STATEID
;
1793 status
= nfs41_test_stateid(server
, stateid
);
1794 if (status
!= NFS_OK
) {
1795 /* Free the stateid unless the server explicitly
1796 * informs us the stateid is unrecognized. */
1797 if (status
!= -NFS4ERR_BAD_STATEID
)
1798 nfs41_free_stateid(server
, stateid
);
1800 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1801 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1802 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1807 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1811 nfs41_clear_delegation_stateid(state
);
1812 status
= nfs41_check_open_stateid(state
);
1813 if (status
!= NFS_OK
)
1814 status
= nfs4_open_expired(sp
, state
);
1820 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1821 * fields corresponding to attributes that were used to store the verifier.
1822 * Make sure we clobber those fields in the later setattr call
1824 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1826 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1827 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1828 sattr
->ia_valid
|= ATTR_ATIME
;
1830 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1831 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1832 sattr
->ia_valid
|= ATTR_MTIME
;
1836 * Returns a referenced nfs4_state
1838 static int _nfs4_do_open(struct inode
*dir
,
1839 struct dentry
*dentry
,
1842 struct iattr
*sattr
,
1843 struct rpc_cred
*cred
,
1844 struct nfs4_state
**res
,
1845 struct nfs4_threshold
**ctx_th
)
1847 struct nfs4_state_owner
*sp
;
1848 struct nfs4_state
*state
= NULL
;
1849 struct nfs_server
*server
= NFS_SERVER(dir
);
1850 struct nfs4_opendata
*opendata
;
1853 /* Protect against reboot recovery conflicts */
1855 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1857 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1860 status
= nfs4_recover_expired_lease(server
);
1862 goto err_put_state_owner
;
1863 if (dentry
->d_inode
!= NULL
)
1864 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1866 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1867 if (opendata
== NULL
)
1868 goto err_put_state_owner
;
1870 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
1871 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
1872 if (!opendata
->f_attr
.mdsthreshold
)
1873 goto err_opendata_put
;
1874 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
1876 if (dentry
->d_inode
!= NULL
)
1877 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1879 status
= _nfs4_proc_open(opendata
);
1881 goto err_opendata_put
;
1883 state
= nfs4_opendata_to_nfs4_state(opendata
);
1884 status
= PTR_ERR(state
);
1886 goto err_opendata_put
;
1887 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1888 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1890 status
= nfs4_opendata_access(cred
, opendata
, state
, fmode
);
1892 goto err_opendata_put
;
1894 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1895 nfs4_exclusive_attrset(opendata
, sattr
);
1897 nfs_fattr_init(opendata
->o_res
.f_attr
);
1898 status
= nfs4_do_setattr(state
->inode
, cred
,
1899 opendata
->o_res
.f_attr
, sattr
,
1902 nfs_setattr_update_inode(state
->inode
, sattr
);
1903 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1906 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
1907 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
1909 kfree(opendata
->f_attr
.mdsthreshold
);
1910 opendata
->f_attr
.mdsthreshold
= NULL
;
1912 nfs4_opendata_put(opendata
);
1913 nfs4_put_state_owner(sp
);
1917 kfree(opendata
->f_attr
.mdsthreshold
);
1918 nfs4_opendata_put(opendata
);
1919 err_put_state_owner
:
1920 nfs4_put_state_owner(sp
);
1927 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
1928 struct dentry
*dentry
,
1931 struct iattr
*sattr
,
1932 struct rpc_cred
*cred
,
1933 struct nfs4_threshold
**ctx_th
)
1935 struct nfs4_exception exception
= { };
1936 struct nfs4_state
*res
;
1939 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
1941 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
1945 /* NOTE: BAD_SEQID means the server and client disagree about the
1946 * book-keeping w.r.t. state-changing operations
1947 * (OPEN/CLOSE/LOCK/LOCKU...)
1948 * It is actually a sign of a bug on the client or on the server.
1950 * If we receive a BAD_SEQID error in the particular case of
1951 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1952 * have unhashed the old state_owner for us, and that we can
1953 * therefore safely retry using a new one. We should still warn
1954 * the user though...
1956 if (status
== -NFS4ERR_BAD_SEQID
) {
1957 pr_warn_ratelimited("NFS: v4 server %s "
1958 " returned a bad sequence-id error!\n",
1959 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1960 exception
.retry
= 1;
1964 * BAD_STATEID on OPEN means that the server cancelled our
1965 * state before it received the OPEN_CONFIRM.
1966 * Recover by retrying the request as per the discussion
1967 * on Page 181 of RFC3530.
1969 if (status
== -NFS4ERR_BAD_STATEID
) {
1970 exception
.retry
= 1;
1973 if (status
== -EAGAIN
) {
1974 /* We must have found a delegation */
1975 exception
.retry
= 1;
1978 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1979 status
, &exception
));
1980 } while (exception
.retry
);
1984 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1985 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1986 struct nfs4_state
*state
)
1988 struct nfs_server
*server
= NFS_SERVER(inode
);
1989 struct nfs_setattrargs arg
= {
1990 .fh
= NFS_FH(inode
),
1993 .bitmask
= server
->attr_bitmask
,
1995 struct nfs_setattrres res
= {
1999 struct rpc_message msg
= {
2000 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2005 unsigned long timestamp
= jiffies
;
2008 nfs_fattr_init(fattr
);
2010 if (state
!= NULL
) {
2011 struct nfs_lockowner lockowner
= {
2012 .l_owner
= current
->files
,
2013 .l_pid
= current
->tgid
,
2015 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2017 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
2019 /* Use that stateid */
2021 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2023 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2024 if (status
== 0 && state
!= NULL
)
2025 renew_lease(server
, timestamp
);
2029 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2030 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2031 struct nfs4_state
*state
)
2033 struct nfs_server
*server
= NFS_SERVER(inode
);
2034 struct nfs4_exception exception
= {
2040 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2042 case -NFS4ERR_OPENMODE
:
2043 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2045 if (sattr
->ia_valid
& ATTR_OPEN
)
2050 err
= nfs4_handle_exception(server
, err
, &exception
);
2051 } while (exception
.retry
);
2056 struct nfs4_closedata
{
2057 struct inode
*inode
;
2058 struct nfs4_state
*state
;
2059 struct nfs_closeargs arg
;
2060 struct nfs_closeres res
;
2061 struct nfs_fattr fattr
;
2062 unsigned long timestamp
;
2067 static void nfs4_free_closedata(void *data
)
2069 struct nfs4_closedata
*calldata
= data
;
2070 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2071 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2074 pnfs_roc_release(calldata
->state
->inode
);
2075 nfs4_put_open_state(calldata
->state
);
2076 nfs_free_seqid(calldata
->arg
.seqid
);
2077 nfs4_put_state_owner(sp
);
2078 nfs_sb_deactive_async(sb
);
2082 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2085 spin_lock(&state
->owner
->so_lock
);
2086 if (!(fmode
& FMODE_READ
))
2087 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2088 if (!(fmode
& FMODE_WRITE
))
2089 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2090 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2091 spin_unlock(&state
->owner
->so_lock
);
2094 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2096 struct nfs4_closedata
*calldata
= data
;
2097 struct nfs4_state
*state
= calldata
->state
;
2098 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2100 dprintk("%s: begin!\n", __func__
);
2101 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2103 /* hmm. we are done with the inode, and in the process of freeing
2104 * the state_owner. we keep this around to process errors
2106 switch (task
->tk_status
) {
2109 pnfs_roc_set_barrier(state
->inode
,
2110 calldata
->roc_barrier
);
2111 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2112 renew_lease(server
, calldata
->timestamp
);
2113 nfs4_close_clear_stateid_flags(state
,
2114 calldata
->arg
.fmode
);
2116 case -NFS4ERR_STALE_STATEID
:
2117 case -NFS4ERR_OLD_STATEID
:
2118 case -NFS4ERR_BAD_STATEID
:
2119 case -NFS4ERR_EXPIRED
:
2120 if (calldata
->arg
.fmode
== 0)
2123 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2124 rpc_restart_call_prepare(task
);
2126 nfs_release_seqid(calldata
->arg
.seqid
);
2127 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2128 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2131 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2133 struct nfs4_closedata
*calldata
= data
;
2134 struct nfs4_state
*state
= calldata
->state
;
2135 struct inode
*inode
= calldata
->inode
;
2138 dprintk("%s: begin!\n", __func__
);
2139 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2142 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2143 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2144 spin_lock(&state
->owner
->so_lock
);
2145 /* Calculate the change in open mode */
2146 if (state
->n_rdwr
== 0) {
2147 if (state
->n_rdonly
== 0) {
2148 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2149 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2150 calldata
->arg
.fmode
&= ~FMODE_READ
;
2152 if (state
->n_wronly
== 0) {
2153 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2154 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2155 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2158 spin_unlock(&state
->owner
->so_lock
);
2161 /* Note: exit _without_ calling nfs4_close_done */
2162 task
->tk_action
= NULL
;
2166 if (calldata
->arg
.fmode
== 0) {
2167 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2168 if (calldata
->roc
&&
2169 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
))
2173 nfs_fattr_init(calldata
->res
.fattr
);
2174 calldata
->timestamp
= jiffies
;
2175 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2176 &calldata
->arg
.seq_args
,
2177 &calldata
->res
.seq_res
,
2179 nfs_release_seqid(calldata
->arg
.seqid
);
2181 rpc_call_start(task
);
2183 dprintk("%s: done!\n", __func__
);
2186 static const struct rpc_call_ops nfs4_close_ops
= {
2187 .rpc_call_prepare
= nfs4_close_prepare
,
2188 .rpc_call_done
= nfs4_close_done
,
2189 .rpc_release
= nfs4_free_closedata
,
2193 * It is possible for data to be read/written from a mem-mapped file
2194 * after the sys_close call (which hits the vfs layer as a flush).
2195 * This means that we can't safely call nfsv4 close on a file until
2196 * the inode is cleared. This in turn means that we are not good
2197 * NFSv4 citizens - we do not indicate to the server to update the file's
2198 * share state even when we are done with one of the three share
2199 * stateid's in the inode.
2201 * NOTE: Caller must be holding the sp->so_owner semaphore!
2203 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2205 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2206 struct nfs4_closedata
*calldata
;
2207 struct nfs4_state_owner
*sp
= state
->owner
;
2208 struct rpc_task
*task
;
2209 struct rpc_message msg
= {
2210 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2211 .rpc_cred
= state
->owner
->so_cred
,
2213 struct rpc_task_setup task_setup_data
= {
2214 .rpc_client
= server
->client
,
2215 .rpc_message
= &msg
,
2216 .callback_ops
= &nfs4_close_ops
,
2217 .workqueue
= nfsiod_workqueue
,
2218 .flags
= RPC_TASK_ASYNC
,
2220 int status
= -ENOMEM
;
2222 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2223 if (calldata
== NULL
)
2225 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2226 calldata
->inode
= state
->inode
;
2227 calldata
->state
= state
;
2228 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2229 calldata
->arg
.stateid
= &state
->open_stateid
;
2230 /* Serialization for the sequence id */
2231 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2232 if (calldata
->arg
.seqid
== NULL
)
2233 goto out_free_calldata
;
2234 calldata
->arg
.fmode
= 0;
2235 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2236 calldata
->res
.fattr
= &calldata
->fattr
;
2237 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2238 calldata
->res
.server
= server
;
2239 calldata
->roc
= pnfs_roc(state
->inode
);
2240 nfs_sb_active(calldata
->inode
->i_sb
);
2242 msg
.rpc_argp
= &calldata
->arg
;
2243 msg
.rpc_resp
= &calldata
->res
;
2244 task_setup_data
.callback_data
= calldata
;
2245 task
= rpc_run_task(&task_setup_data
);
2247 return PTR_ERR(task
);
2250 status
= rpc_wait_for_completion_task(task
);
2256 nfs4_put_open_state(state
);
2257 nfs4_put_state_owner(sp
);
2261 static struct inode
*
2262 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2264 struct nfs4_state
*state
;
2266 /* Protect against concurrent sillydeletes */
2267 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2268 ctx
->cred
, &ctx
->mdsthreshold
);
2270 return ERR_CAST(state
);
2272 return igrab(state
->inode
);
2275 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2277 if (ctx
->state
== NULL
)
2280 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2282 nfs4_close_state(ctx
->state
, ctx
->mode
);
2285 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2287 struct nfs4_server_caps_arg args
= {
2290 struct nfs4_server_caps_res res
= {};
2291 struct rpc_message msg
= {
2292 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2298 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2300 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2301 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2302 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2303 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2304 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2305 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2306 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2307 server
->caps
|= NFS_CAP_ACLS
;
2308 if (res
.has_links
!= 0)
2309 server
->caps
|= NFS_CAP_HARDLINKS
;
2310 if (res
.has_symlinks
!= 0)
2311 server
->caps
|= NFS_CAP_SYMLINKS
;
2312 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2313 server
->caps
|= NFS_CAP_FILEID
;
2314 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2315 server
->caps
|= NFS_CAP_MODE
;
2316 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2317 server
->caps
|= NFS_CAP_NLINK
;
2318 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2319 server
->caps
|= NFS_CAP_OWNER
;
2320 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2321 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2322 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2323 server
->caps
|= NFS_CAP_ATIME
;
2324 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2325 server
->caps
|= NFS_CAP_CTIME
;
2326 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2327 server
->caps
|= NFS_CAP_MTIME
;
2329 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2330 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2331 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2332 server
->acl_bitmask
= res
.acl_bitmask
;
2333 server
->fh_expire_type
= res
.fh_expire_type
;
2339 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2341 struct nfs4_exception exception
= { };
2344 err
= nfs4_handle_exception(server
,
2345 _nfs4_server_capabilities(server
, fhandle
),
2347 } while (exception
.retry
);
2351 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2352 struct nfs_fsinfo
*info
)
2354 struct nfs4_lookup_root_arg args
= {
2355 .bitmask
= nfs4_fattr_bitmap
,
2357 struct nfs4_lookup_res res
= {
2359 .fattr
= info
->fattr
,
2362 struct rpc_message msg
= {
2363 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2368 nfs_fattr_init(info
->fattr
);
2369 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2372 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2373 struct nfs_fsinfo
*info
)
2375 struct nfs4_exception exception
= { };
2378 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2381 case -NFS4ERR_WRONGSEC
:
2384 err
= nfs4_handle_exception(server
, err
, &exception
);
2386 } while (exception
.retry
);
2391 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2392 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2394 struct rpc_auth
*auth
;
2397 auth
= rpcauth_create(flavor
, server
->client
);
2402 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2407 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2408 struct nfs_fsinfo
*info
)
2410 int i
, len
, status
= 0;
2411 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2413 len
= rpcauth_list_flavors(flav_array
, ARRAY_SIZE(flav_array
));
2417 for (i
= 0; i
< len
; i
++) {
2418 /* AUTH_UNIX is the default flavor if none was specified,
2419 * thus has already been tried. */
2420 if (flav_array
[i
] == RPC_AUTH_UNIX
)
2423 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2424 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2429 * -EACCESS could mean that the user doesn't have correct permissions
2430 * to access the mount. It could also mean that we tried to mount
2431 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2432 * existing mount programs don't handle -EACCES very well so it should
2433 * be mapped to -EPERM instead.
2435 if (status
== -EACCES
)
2441 * get the file handle for the "/" directory on the server
2443 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2444 struct nfs_fsinfo
*info
)
2446 int minor_version
= server
->nfs_client
->cl_minorversion
;
2447 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2448 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2450 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2451 * by nfs4_map_errors() as this function exits.
2453 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2455 status
= nfs4_server_capabilities(server
, fhandle
);
2457 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2458 return nfs4_map_errors(status
);
2461 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2462 struct nfs_fsinfo
*info
)
2465 struct nfs_fattr
*fattr
= info
->fattr
;
2467 error
= nfs4_server_capabilities(server
, mntfh
);
2469 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2473 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2475 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2479 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2480 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2481 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2487 * Get locations and (maybe) other attributes of a referral.
2488 * Note that we'll actually follow the referral later when
2489 * we detect fsid mismatch in inode revalidation
2491 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2492 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2493 struct nfs_fh
*fhandle
)
2495 int status
= -ENOMEM
;
2496 struct page
*page
= NULL
;
2497 struct nfs4_fs_locations
*locations
= NULL
;
2499 page
= alloc_page(GFP_KERNEL
);
2502 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2503 if (locations
== NULL
)
2506 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2509 /* Make sure server returned a different fsid for the referral */
2510 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2511 dprintk("%s: server did not return a different fsid for"
2512 " a referral at %s\n", __func__
, name
->name
);
2516 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2517 nfs_fixup_referral_attributes(&locations
->fattr
);
2519 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2520 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2521 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2529 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2531 struct nfs4_getattr_arg args
= {
2533 .bitmask
= server
->attr_bitmask
,
2535 struct nfs4_getattr_res res
= {
2539 struct rpc_message msg
= {
2540 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2545 nfs_fattr_init(fattr
);
2546 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2549 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2551 struct nfs4_exception exception
= { };
2554 err
= nfs4_handle_exception(server
,
2555 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2557 } while (exception
.retry
);
2562 * The file is not closed if it is opened due to the a request to change
2563 * the size of the file. The open call will not be needed once the
2564 * VFS layer lookup-intents are implemented.
2566 * Close is called when the inode is destroyed.
2567 * If we haven't opened the file for O_WRONLY, we
2568 * need to in the size_change case to obtain a stateid.
2571 * Because OPEN is always done by name in nfsv4, it is
2572 * possible that we opened a different file by the same
2573 * name. We can recognize this race condition, but we
2574 * can't do anything about it besides returning an error.
2576 * This will be fixed with VFS changes (lookup-intent).
2579 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2580 struct iattr
*sattr
)
2582 struct inode
*inode
= dentry
->d_inode
;
2583 struct rpc_cred
*cred
= NULL
;
2584 struct nfs4_state
*state
= NULL
;
2587 if (pnfs_ld_layoutret_on_setattr(inode
))
2588 pnfs_return_layout(inode
);
2590 nfs_fattr_init(fattr
);
2592 /* Deal with open(O_TRUNC) */
2593 if (sattr
->ia_valid
& ATTR_OPEN
)
2594 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2596 /* Optimization: if the end result is no change, don't RPC */
2597 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2600 /* Search for an existing open(O_WRITE) file */
2601 if (sattr
->ia_valid
& ATTR_FILE
) {
2602 struct nfs_open_context
*ctx
;
2604 ctx
= nfs_file_open_context(sattr
->ia_file
);
2611 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2613 nfs_setattr_update_inode(inode
, sattr
);
2617 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2618 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2619 struct nfs_fattr
*fattr
)
2621 struct nfs_server
*server
= NFS_SERVER(dir
);
2623 struct nfs4_lookup_arg args
= {
2624 .bitmask
= server
->attr_bitmask
,
2625 .dir_fh
= NFS_FH(dir
),
2628 struct nfs4_lookup_res res
= {
2633 struct rpc_message msg
= {
2634 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2639 nfs_fattr_init(fattr
);
2641 dprintk("NFS call lookup %s\n", name
->name
);
2642 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2643 dprintk("NFS reply lookup: %d\n", status
);
2647 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2649 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2650 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2651 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2655 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2656 struct qstr
*name
, struct nfs_fh
*fhandle
,
2657 struct nfs_fattr
*fattr
)
2659 struct nfs4_exception exception
= { };
2660 struct rpc_clnt
*client
= *clnt
;
2663 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2665 case -NFS4ERR_BADNAME
:
2668 case -NFS4ERR_MOVED
:
2669 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2671 case -NFS4ERR_WRONGSEC
:
2673 if (client
!= *clnt
)
2676 client
= nfs4_create_sec_client(client
, dir
, name
);
2678 return PTR_ERR(client
);
2680 exception
.retry
= 1;
2683 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2685 } while (exception
.retry
);
2690 else if (client
!= *clnt
)
2691 rpc_shutdown_client(client
);
2696 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2697 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2700 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2702 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2703 if (client
!= NFS_CLIENT(dir
)) {
2704 rpc_shutdown_client(client
);
2705 nfs_fixup_secinfo_attributes(fattr
);
2711 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2712 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2715 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2717 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2719 rpc_shutdown_client(client
);
2720 return ERR_PTR(status
);
2725 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2727 struct nfs_server
*server
= NFS_SERVER(inode
);
2728 struct nfs4_accessargs args
= {
2729 .fh
= NFS_FH(inode
),
2730 .bitmask
= server
->cache_consistency_bitmask
,
2732 struct nfs4_accessres res
= {
2735 struct rpc_message msg
= {
2736 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2739 .rpc_cred
= entry
->cred
,
2741 int mode
= entry
->mask
;
2745 * Determine which access bits we want to ask for...
2747 if (mode
& MAY_READ
)
2748 args
.access
|= NFS4_ACCESS_READ
;
2749 if (S_ISDIR(inode
->i_mode
)) {
2750 if (mode
& MAY_WRITE
)
2751 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2752 if (mode
& MAY_EXEC
)
2753 args
.access
|= NFS4_ACCESS_LOOKUP
;
2755 if (mode
& MAY_WRITE
)
2756 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2757 if (mode
& MAY_EXEC
)
2758 args
.access
|= NFS4_ACCESS_EXECUTE
;
2761 res
.fattr
= nfs_alloc_fattr();
2762 if (res
.fattr
== NULL
)
2765 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2767 nfs_access_set_mask(entry
, res
.access
);
2768 nfs_refresh_inode(inode
, res
.fattr
);
2770 nfs_free_fattr(res
.fattr
);
2774 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2776 struct nfs4_exception exception
= { };
2779 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2780 _nfs4_proc_access(inode
, entry
),
2782 } while (exception
.retry
);
2787 * TODO: For the time being, we don't try to get any attributes
2788 * along with any of the zero-copy operations READ, READDIR,
2791 * In the case of the first three, we want to put the GETATTR
2792 * after the read-type operation -- this is because it is hard
2793 * to predict the length of a GETATTR response in v4, and thus
2794 * align the READ data correctly. This means that the GETATTR
2795 * may end up partially falling into the page cache, and we should
2796 * shift it into the 'tail' of the xdr_buf before processing.
2797 * To do this efficiently, we need to know the total length
2798 * of data received, which doesn't seem to be available outside
2801 * In the case of WRITE, we also want to put the GETATTR after
2802 * the operation -- in this case because we want to make sure
2803 * we get the post-operation mtime and size.
2805 * Both of these changes to the XDR layer would in fact be quite
2806 * minor, but I decided to leave them for a subsequent patch.
2808 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2809 unsigned int pgbase
, unsigned int pglen
)
2811 struct nfs4_readlink args
= {
2812 .fh
= NFS_FH(inode
),
2817 struct nfs4_readlink_res res
;
2818 struct rpc_message msg
= {
2819 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2824 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2827 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2828 unsigned int pgbase
, unsigned int pglen
)
2830 struct nfs4_exception exception
= { };
2833 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2834 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2836 } while (exception
.retry
);
2841 * This is just for mknod. open(O_CREAT) will always do ->open_context().
2844 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2847 struct nfs_open_context
*ctx
;
2848 struct nfs4_state
*state
;
2851 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
2853 return PTR_ERR(ctx
);
2855 sattr
->ia_mode
&= ~current_umask();
2856 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
2857 flags
, sattr
, ctx
->cred
,
2858 &ctx
->mdsthreshold
);
2860 if (IS_ERR(state
)) {
2861 status
= PTR_ERR(state
);
2864 d_add(dentry
, igrab(state
->inode
));
2865 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2868 put_nfs_open_context(ctx
);
2872 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2874 struct nfs_server
*server
= NFS_SERVER(dir
);
2875 struct nfs_removeargs args
= {
2879 struct nfs_removeres res
= {
2882 struct rpc_message msg
= {
2883 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2889 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2891 update_changeattr(dir
, &res
.cinfo
);
2895 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2897 struct nfs4_exception exception
= { };
2900 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2901 _nfs4_proc_remove(dir
, name
),
2903 } while (exception
.retry
);
2907 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2909 struct nfs_server
*server
= NFS_SERVER(dir
);
2910 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2911 struct nfs_removeres
*res
= msg
->rpc_resp
;
2913 res
->server
= server
;
2914 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2915 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
2918 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
2920 if (nfs4_setup_sequence(NFS_SERVER(data
->dir
),
2921 &data
->args
.seq_args
,
2925 rpc_call_start(task
);
2928 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2930 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2932 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2934 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2936 update_changeattr(dir
, &res
->cinfo
);
2940 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2942 struct nfs_server
*server
= NFS_SERVER(dir
);
2943 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2944 struct nfs_renameres
*res
= msg
->rpc_resp
;
2946 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2947 res
->server
= server
;
2948 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
2951 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
2953 if (nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
2954 &data
->args
.seq_args
,
2958 rpc_call_start(task
);
2961 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2962 struct inode
*new_dir
)
2964 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2966 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2968 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2971 update_changeattr(old_dir
, &res
->old_cinfo
);
2972 update_changeattr(new_dir
, &res
->new_cinfo
);
2976 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2977 struct inode
*new_dir
, struct qstr
*new_name
)
2979 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2980 struct nfs_renameargs arg
= {
2981 .old_dir
= NFS_FH(old_dir
),
2982 .new_dir
= NFS_FH(new_dir
),
2983 .old_name
= old_name
,
2984 .new_name
= new_name
,
2986 struct nfs_renameres res
= {
2989 struct rpc_message msg
= {
2990 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2994 int status
= -ENOMEM
;
2996 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2998 update_changeattr(old_dir
, &res
.old_cinfo
);
2999 update_changeattr(new_dir
, &res
.new_cinfo
);
3004 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3005 struct inode
*new_dir
, struct qstr
*new_name
)
3007 struct nfs4_exception exception
= { };
3010 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3011 _nfs4_proc_rename(old_dir
, old_name
,
3014 } while (exception
.retry
);
3018 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3020 struct nfs_server
*server
= NFS_SERVER(inode
);
3021 struct nfs4_link_arg arg
= {
3022 .fh
= NFS_FH(inode
),
3023 .dir_fh
= NFS_FH(dir
),
3025 .bitmask
= server
->attr_bitmask
,
3027 struct nfs4_link_res res
= {
3030 struct rpc_message msg
= {
3031 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3035 int status
= -ENOMEM
;
3037 res
.fattr
= nfs_alloc_fattr();
3038 if (res
.fattr
== NULL
)
3041 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3043 update_changeattr(dir
, &res
.cinfo
);
3044 nfs_post_op_update_inode(inode
, res
.fattr
);
3047 nfs_free_fattr(res
.fattr
);
3051 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3053 struct nfs4_exception exception
= { };
3056 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3057 _nfs4_proc_link(inode
, dir
, name
),
3059 } while (exception
.retry
);
3063 struct nfs4_createdata
{
3064 struct rpc_message msg
;
3065 struct nfs4_create_arg arg
;
3066 struct nfs4_create_res res
;
3068 struct nfs_fattr fattr
;
3071 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3072 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3074 struct nfs4_createdata
*data
;
3076 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3078 struct nfs_server
*server
= NFS_SERVER(dir
);
3080 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3081 data
->msg
.rpc_argp
= &data
->arg
;
3082 data
->msg
.rpc_resp
= &data
->res
;
3083 data
->arg
.dir_fh
= NFS_FH(dir
);
3084 data
->arg
.server
= server
;
3085 data
->arg
.name
= name
;
3086 data
->arg
.attrs
= sattr
;
3087 data
->arg
.ftype
= ftype
;
3088 data
->arg
.bitmask
= server
->attr_bitmask
;
3089 data
->res
.server
= server
;
3090 data
->res
.fh
= &data
->fh
;
3091 data
->res
.fattr
= &data
->fattr
;
3092 nfs_fattr_init(data
->res
.fattr
);
3097 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3099 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3100 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3102 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3103 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3108 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3113 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3114 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3116 struct nfs4_createdata
*data
;
3117 int status
= -ENAMETOOLONG
;
3119 if (len
> NFS4_MAXPATHLEN
)
3123 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3127 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3128 data
->arg
.u
.symlink
.pages
= &page
;
3129 data
->arg
.u
.symlink
.len
= len
;
3131 status
= nfs4_do_create(dir
, dentry
, data
);
3133 nfs4_free_createdata(data
);
3138 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3139 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3141 struct nfs4_exception exception
= { };
3144 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3145 _nfs4_proc_symlink(dir
, dentry
, page
,
3148 } while (exception
.retry
);
3152 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3153 struct iattr
*sattr
)
3155 struct nfs4_createdata
*data
;
3156 int status
= -ENOMEM
;
3158 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3162 status
= nfs4_do_create(dir
, dentry
, data
);
3164 nfs4_free_createdata(data
);
3169 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3170 struct iattr
*sattr
)
3172 struct nfs4_exception exception
= { };
3175 sattr
->ia_mode
&= ~current_umask();
3177 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3178 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3180 } while (exception
.retry
);
3184 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3185 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3187 struct inode
*dir
= dentry
->d_inode
;
3188 struct nfs4_readdir_arg args
= {
3193 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3196 struct nfs4_readdir_res res
;
3197 struct rpc_message msg
= {
3198 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3205 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3206 dentry
->d_parent
->d_name
.name
,
3207 dentry
->d_name
.name
,
3208 (unsigned long long)cookie
);
3209 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3210 res
.pgbase
= args
.pgbase
;
3211 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3213 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3214 status
+= args
.pgbase
;
3217 nfs_invalidate_atime(dir
);
3219 dprintk("%s: returns %d\n", __func__
, status
);
3223 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3224 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3226 struct nfs4_exception exception
= { };
3229 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3230 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3231 pages
, count
, plus
),
3233 } while (exception
.retry
);
3237 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3238 struct iattr
*sattr
, dev_t rdev
)
3240 struct nfs4_createdata
*data
;
3241 int mode
= sattr
->ia_mode
;
3242 int status
= -ENOMEM
;
3244 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3249 data
->arg
.ftype
= NF4FIFO
;
3250 else if (S_ISBLK(mode
)) {
3251 data
->arg
.ftype
= NF4BLK
;
3252 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3253 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3255 else if (S_ISCHR(mode
)) {
3256 data
->arg
.ftype
= NF4CHR
;
3257 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3258 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3259 } else if (!S_ISSOCK(mode
)) {
3264 status
= nfs4_do_create(dir
, dentry
, data
);
3266 nfs4_free_createdata(data
);
3271 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3272 struct iattr
*sattr
, dev_t rdev
)
3274 struct nfs4_exception exception
= { };
3277 sattr
->ia_mode
&= ~current_umask();
3279 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3280 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3282 } while (exception
.retry
);
3286 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3287 struct nfs_fsstat
*fsstat
)
3289 struct nfs4_statfs_arg args
= {
3291 .bitmask
= server
->attr_bitmask
,
3293 struct nfs4_statfs_res res
= {
3296 struct rpc_message msg
= {
3297 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3302 nfs_fattr_init(fsstat
->fattr
);
3303 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3306 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3308 struct nfs4_exception exception
= { };
3311 err
= nfs4_handle_exception(server
,
3312 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3314 } while (exception
.retry
);
3318 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3319 struct nfs_fsinfo
*fsinfo
)
3321 struct nfs4_fsinfo_arg args
= {
3323 .bitmask
= server
->attr_bitmask
,
3325 struct nfs4_fsinfo_res res
= {
3328 struct rpc_message msg
= {
3329 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3334 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3337 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3339 struct nfs4_exception exception
= { };
3343 err
= nfs4_handle_exception(server
,
3344 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3346 } while (exception
.retry
);
3350 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3354 nfs_fattr_init(fsinfo
->fattr
);
3355 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3357 /* block layout checks this! */
3358 server
->pnfs_blksize
= fsinfo
->blksize
;
3359 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3365 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3366 struct nfs_pathconf
*pathconf
)
3368 struct nfs4_pathconf_arg args
= {
3370 .bitmask
= server
->attr_bitmask
,
3372 struct nfs4_pathconf_res res
= {
3373 .pathconf
= pathconf
,
3375 struct rpc_message msg
= {
3376 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3381 /* None of the pathconf attributes are mandatory to implement */
3382 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3383 memset(pathconf
, 0, sizeof(*pathconf
));
3387 nfs_fattr_init(pathconf
->fattr
);
3388 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3391 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3392 struct nfs_pathconf
*pathconf
)
3394 struct nfs4_exception exception
= { };
3398 err
= nfs4_handle_exception(server
,
3399 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3401 } while (exception
.retry
);
3405 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3407 nfs_invalidate_atime(data
->header
->inode
);
3410 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3412 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3414 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3415 rpc_restart_call_prepare(task
);
3419 __nfs4_read_done_cb(data
);
3420 if (task
->tk_status
> 0)
3421 renew_lease(server
, data
->timestamp
);
3425 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3428 dprintk("--> %s\n", __func__
);
3430 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3433 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3434 nfs4_read_done_cb(task
, data
);
3437 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3439 data
->timestamp
= jiffies
;
3440 data
->read_done_cb
= nfs4_read_done_cb
;
3441 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3442 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3445 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3447 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3448 &data
->args
.seq_args
,
3452 rpc_call_start(task
);
3455 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3457 struct inode
*inode
= data
->header
->inode
;
3459 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3460 rpc_restart_call_prepare(task
);
3463 if (task
->tk_status
>= 0) {
3464 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3465 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3470 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3472 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3474 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3475 nfs4_write_done_cb(task
, data
);
3479 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3481 const struct nfs_pgio_header
*hdr
= data
->header
;
3483 /* Don't request attributes for pNFS or O_DIRECT writes */
3484 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3486 /* Otherwise, request attributes if and only if we don't hold
3489 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3492 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3494 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3496 if (!nfs4_write_need_cache_consistency_data(data
)) {
3497 data
->args
.bitmask
= NULL
;
3498 data
->res
.fattr
= NULL
;
3500 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3502 if (!data
->write_done_cb
)
3503 data
->write_done_cb
= nfs4_write_done_cb
;
3504 data
->res
.server
= server
;
3505 data
->timestamp
= jiffies
;
3507 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3508 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3511 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3513 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3514 &data
->args
.seq_args
,
3518 rpc_call_start(task
);
3521 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3523 if (nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3524 &data
->args
.seq_args
,
3528 rpc_call_start(task
);
3531 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3533 struct inode
*inode
= data
->inode
;
3535 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3536 rpc_restart_call_prepare(task
);
3542 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3544 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3546 return data
->commit_done_cb(task
, data
);
3549 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3551 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3553 if (data
->commit_done_cb
== NULL
)
3554 data
->commit_done_cb
= nfs4_commit_done_cb
;
3555 data
->res
.server
= server
;
3556 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3557 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3560 struct nfs4_renewdata
{
3561 struct nfs_client
*client
;
3562 unsigned long timestamp
;
3566 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3567 * standalone procedure for queueing an asynchronous RENEW.
3569 static void nfs4_renew_release(void *calldata
)
3571 struct nfs4_renewdata
*data
= calldata
;
3572 struct nfs_client
*clp
= data
->client
;
3574 if (atomic_read(&clp
->cl_count
) > 1)
3575 nfs4_schedule_state_renewal(clp
);
3576 nfs_put_client(clp
);
3580 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3582 struct nfs4_renewdata
*data
= calldata
;
3583 struct nfs_client
*clp
= data
->client
;
3584 unsigned long timestamp
= data
->timestamp
;
3586 if (task
->tk_status
< 0) {
3587 /* Unless we're shutting down, schedule state recovery! */
3588 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3590 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3591 nfs4_schedule_lease_recovery(clp
);
3594 nfs4_schedule_path_down_recovery(clp
);
3596 do_renew_lease(clp
, timestamp
);
3599 static const struct rpc_call_ops nfs4_renew_ops
= {
3600 .rpc_call_done
= nfs4_renew_done
,
3601 .rpc_release
= nfs4_renew_release
,
3604 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3606 struct rpc_message msg
= {
3607 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3611 struct nfs4_renewdata
*data
;
3613 if (renew_flags
== 0)
3615 if (!atomic_inc_not_zero(&clp
->cl_count
))
3617 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3621 data
->timestamp
= jiffies
;
3622 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3623 &nfs4_renew_ops
, data
);
3626 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3628 struct rpc_message msg
= {
3629 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3633 unsigned long now
= jiffies
;
3636 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3639 do_renew_lease(clp
, now
);
3643 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3645 return (server
->caps
& NFS_CAP_ACLS
)
3646 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3647 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3650 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3651 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3654 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3656 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3657 struct page
**pages
, unsigned int *pgbase
)
3659 struct page
*newpage
, **spages
;
3665 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3666 newpage
= alloc_page(GFP_KERNEL
);
3668 if (newpage
== NULL
)
3670 memcpy(page_address(newpage
), buf
, len
);
3675 } while (buflen
!= 0);
3681 __free_page(spages
[rc
-1]);
3685 struct nfs4_cached_acl
{
3691 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3693 struct nfs_inode
*nfsi
= NFS_I(inode
);
3695 spin_lock(&inode
->i_lock
);
3696 kfree(nfsi
->nfs4_acl
);
3697 nfsi
->nfs4_acl
= acl
;
3698 spin_unlock(&inode
->i_lock
);
3701 static void nfs4_zap_acl_attr(struct inode
*inode
)
3703 nfs4_set_cached_acl(inode
, NULL
);
3706 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3708 struct nfs_inode
*nfsi
= NFS_I(inode
);
3709 struct nfs4_cached_acl
*acl
;
3712 spin_lock(&inode
->i_lock
);
3713 acl
= nfsi
->nfs4_acl
;
3716 if (buf
== NULL
) /* user is just asking for length */
3718 if (acl
->cached
== 0)
3720 ret
= -ERANGE
; /* see getxattr(2) man page */
3721 if (acl
->len
> buflen
)
3723 memcpy(buf
, acl
->data
, acl
->len
);
3727 spin_unlock(&inode
->i_lock
);
3731 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3733 struct nfs4_cached_acl
*acl
;
3734 size_t buflen
= sizeof(*acl
) + acl_len
;
3736 if (buflen
<= PAGE_SIZE
) {
3737 acl
= kmalloc(buflen
, GFP_KERNEL
);
3741 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3743 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3750 nfs4_set_cached_acl(inode
, acl
);
3754 * The getxattr API returns the required buffer length when called with a
3755 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3756 * the required buf. On a NULL buf, we send a page of data to the server
3757 * guessing that the ACL request can be serviced by a page. If so, we cache
3758 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3759 * the cache. If not so, we throw away the page, and cache the required
3760 * length. The next getxattr call will then produce another round trip to
3761 * the server, this time with the input buf of the required size.
3763 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3765 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3766 struct nfs_getaclargs args
= {
3767 .fh
= NFS_FH(inode
),
3771 struct nfs_getaclres res
= {
3774 struct rpc_message msg
= {
3775 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3779 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3780 int ret
= -ENOMEM
, i
;
3782 /* As long as we're doing a round trip to the server anyway,
3783 * let's be prepared for a page of acl data. */
3786 if (npages
> ARRAY_SIZE(pages
))
3789 for (i
= 0; i
< npages
; i
++) {
3790 pages
[i
] = alloc_page(GFP_KERNEL
);
3795 /* for decoding across pages */
3796 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3797 if (!res
.acl_scratch
)
3800 args
.acl_len
= npages
* PAGE_SIZE
;
3801 args
.acl_pgbase
= 0;
3803 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3804 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3805 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3806 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3810 /* Handle the case where the passed-in buffer is too short */
3811 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
3812 /* Did the user only issue a request for the acl length? */
3818 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
3820 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
3824 for (i
= 0; i
< npages
; i
++)
3826 __free_page(pages
[i
]);
3827 if (res
.acl_scratch
)
3828 __free_page(res
.acl_scratch
);
3832 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3834 struct nfs4_exception exception
= { };
3837 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3840 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3841 } while (exception
.retry
);
3845 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3847 struct nfs_server
*server
= NFS_SERVER(inode
);
3850 if (!nfs4_server_supports_acls(server
))
3852 ret
= nfs_revalidate_inode(server
, inode
);
3855 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3856 nfs_zap_acl_cache(inode
);
3857 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3859 /* -ENOENT is returned if there is no ACL or if there is an ACL
3860 * but no cached acl data, just the acl length */
3862 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3865 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3867 struct nfs_server
*server
= NFS_SERVER(inode
);
3868 struct page
*pages
[NFS4ACL_MAXPAGES
];
3869 struct nfs_setaclargs arg
= {
3870 .fh
= NFS_FH(inode
),
3874 struct nfs_setaclres res
;
3875 struct rpc_message msg
= {
3876 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3880 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3883 if (!nfs4_server_supports_acls(server
))
3885 if (npages
> ARRAY_SIZE(pages
))
3887 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3890 nfs4_inode_return_delegation(inode
);
3891 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3894 * Free each page after tx, so the only ref left is
3895 * held by the network stack
3898 put_page(pages
[i
-1]);
3901 * Acl update can result in inode attribute update.
3902 * so mark the attribute cache invalid.
3904 spin_lock(&inode
->i_lock
);
3905 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3906 spin_unlock(&inode
->i_lock
);
3907 nfs_access_zap_cache(inode
);
3908 nfs_zap_acl_cache(inode
);
3912 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3914 struct nfs4_exception exception
= { };
3917 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3918 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3920 } while (exception
.retry
);
3925 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3927 struct nfs_client
*clp
= server
->nfs_client
;
3929 if (task
->tk_status
>= 0)
3931 switch(task
->tk_status
) {
3932 case -NFS4ERR_DELEG_REVOKED
:
3933 case -NFS4ERR_ADMIN_REVOKED
:
3934 case -NFS4ERR_BAD_STATEID
:
3937 nfs_remove_bad_delegation(state
->inode
);
3938 case -NFS4ERR_OPENMODE
:
3941 nfs4_schedule_stateid_recovery(server
, state
);
3942 goto wait_on_recovery
;
3943 case -NFS4ERR_EXPIRED
:
3945 nfs4_schedule_stateid_recovery(server
, state
);
3946 case -NFS4ERR_STALE_STATEID
:
3947 case -NFS4ERR_STALE_CLIENTID
:
3948 nfs4_schedule_lease_recovery(clp
);
3949 goto wait_on_recovery
;
3950 #if defined(CONFIG_NFS_V4_1)
3951 case -NFS4ERR_BADSESSION
:
3952 case -NFS4ERR_BADSLOT
:
3953 case -NFS4ERR_BAD_HIGH_SLOT
:
3954 case -NFS4ERR_DEADSESSION
:
3955 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3956 case -NFS4ERR_SEQ_FALSE_RETRY
:
3957 case -NFS4ERR_SEQ_MISORDERED
:
3958 dprintk("%s ERROR %d, Reset session\n", __func__
,
3960 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
3961 task
->tk_status
= 0;
3963 #endif /* CONFIG_NFS_V4_1 */
3964 case -NFS4ERR_DELAY
:
3965 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3966 case -NFS4ERR_GRACE
:
3968 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3969 task
->tk_status
= 0;
3971 case -NFS4ERR_RETRY_UNCACHED_REP
:
3972 case -NFS4ERR_OLD_STATEID
:
3973 task
->tk_status
= 0;
3976 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3979 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3980 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3981 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3982 task
->tk_status
= 0;
3986 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
3987 nfs4_verifier
*bootverf
)
3991 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
3992 /* An impossible timestamp guarantees this value
3993 * will never match a generated boot time. */
3995 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
3997 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
3998 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
3999 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4001 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4005 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4006 char *buf
, size_t len
)
4008 unsigned int result
;
4011 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4013 rpc_peeraddr2str(clp
->cl_rpcclient
,
4015 rpc_peeraddr2str(clp
->cl_rpcclient
,
4016 RPC_DISPLAY_PROTO
));
4022 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4023 char *buf
, size_t len
)
4025 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4027 if (nfs4_client_id_uniquifier
[0] != '\0')
4028 nodename
= nfs4_client_id_uniquifier
;
4029 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4030 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4035 * nfs4_proc_setclientid - Negotiate client ID
4036 * @clp: state data structure
4037 * @program: RPC program for NFSv4 callback service
4038 * @port: IP port number for NFS4 callback service
4039 * @cred: RPC credential to use for this call
4040 * @res: where to place the result
4042 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4044 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4045 unsigned short port
, struct rpc_cred
*cred
,
4046 struct nfs4_setclientid_res
*res
)
4048 nfs4_verifier sc_verifier
;
4049 struct nfs4_setclientid setclientid
= {
4050 .sc_verifier
= &sc_verifier
,
4052 .sc_cb_ident
= clp
->cl_cb_ident
,
4054 struct rpc_message msg
= {
4055 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4056 .rpc_argp
= &setclientid
,
4062 /* nfs_client_id4 */
4063 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4064 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4065 setclientid
.sc_name_len
=
4066 nfs4_init_uniform_client_string(clp
,
4067 setclientid
.sc_name
,
4068 sizeof(setclientid
.sc_name
));
4070 setclientid
.sc_name_len
=
4071 nfs4_init_nonuniform_client_string(clp
,
4072 setclientid
.sc_name
,
4073 sizeof(setclientid
.sc_name
));
4076 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4077 sizeof(setclientid
.sc_netid
),
4078 rpc_peeraddr2str(clp
->cl_rpcclient
,
4079 RPC_DISPLAY_NETID
));
4081 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4082 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4083 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4085 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4086 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4087 setclientid
.sc_name_len
, setclientid
.sc_name
);
4088 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4089 dprintk("NFS reply setclientid: %d\n", status
);
4094 * nfs4_proc_setclientid_confirm - Confirm client ID
4095 * @clp: state data structure
4096 * @res: result of a previous SETCLIENTID
4097 * @cred: RPC credential to use for this call
4099 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4101 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4102 struct nfs4_setclientid_res
*arg
,
4103 struct rpc_cred
*cred
)
4105 struct nfs_fsinfo fsinfo
;
4106 struct rpc_message msg
= {
4107 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4109 .rpc_resp
= &fsinfo
,
4115 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4116 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4119 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4121 spin_lock(&clp
->cl_lock
);
4122 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4123 clp
->cl_last_renewal
= now
;
4124 spin_unlock(&clp
->cl_lock
);
4126 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4130 struct nfs4_delegreturndata
{
4131 struct nfs4_delegreturnargs args
;
4132 struct nfs4_delegreturnres res
;
4134 nfs4_stateid stateid
;
4135 unsigned long timestamp
;
4136 struct nfs_fattr fattr
;
4140 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4142 struct nfs4_delegreturndata
*data
= calldata
;
4144 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4147 switch (task
->tk_status
) {
4148 case -NFS4ERR_STALE_STATEID
:
4149 case -NFS4ERR_EXPIRED
:
4151 renew_lease(data
->res
.server
, data
->timestamp
);
4154 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4156 rpc_restart_call_prepare(task
);
4160 data
->rpc_status
= task
->tk_status
;
4163 static void nfs4_delegreturn_release(void *calldata
)
4168 #if defined(CONFIG_NFS_V4_1)
4169 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4171 struct nfs4_delegreturndata
*d_data
;
4173 d_data
= (struct nfs4_delegreturndata
*)data
;
4175 if (nfs4_setup_sequence(d_data
->res
.server
,
4176 &d_data
->args
.seq_args
,
4177 &d_data
->res
.seq_res
, task
))
4179 rpc_call_start(task
);
4181 #endif /* CONFIG_NFS_V4_1 */
4183 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4184 #if defined(CONFIG_NFS_V4_1)
4185 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4186 #endif /* CONFIG_NFS_V4_1 */
4187 .rpc_call_done
= nfs4_delegreturn_done
,
4188 .rpc_release
= nfs4_delegreturn_release
,
4191 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4193 struct nfs4_delegreturndata
*data
;
4194 struct nfs_server
*server
= NFS_SERVER(inode
);
4195 struct rpc_task
*task
;
4196 struct rpc_message msg
= {
4197 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4200 struct rpc_task_setup task_setup_data
= {
4201 .rpc_client
= server
->client
,
4202 .rpc_message
= &msg
,
4203 .callback_ops
= &nfs4_delegreturn_ops
,
4204 .flags
= RPC_TASK_ASYNC
,
4208 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4211 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4212 data
->args
.fhandle
= &data
->fh
;
4213 data
->args
.stateid
= &data
->stateid
;
4214 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4215 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4216 nfs4_stateid_copy(&data
->stateid
, stateid
);
4217 data
->res
.fattr
= &data
->fattr
;
4218 data
->res
.server
= server
;
4219 nfs_fattr_init(data
->res
.fattr
);
4220 data
->timestamp
= jiffies
;
4221 data
->rpc_status
= 0;
4223 task_setup_data
.callback_data
= data
;
4224 msg
.rpc_argp
= &data
->args
;
4225 msg
.rpc_resp
= &data
->res
;
4226 task
= rpc_run_task(&task_setup_data
);
4228 return PTR_ERR(task
);
4231 status
= nfs4_wait_for_completion_rpc_task(task
);
4234 status
= data
->rpc_status
;
4236 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4238 nfs_refresh_inode(inode
, &data
->fattr
);
4244 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4246 struct nfs_server
*server
= NFS_SERVER(inode
);
4247 struct nfs4_exception exception
= { };
4250 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4252 case -NFS4ERR_STALE_STATEID
:
4253 case -NFS4ERR_EXPIRED
:
4257 err
= nfs4_handle_exception(server
, err
, &exception
);
4258 } while (exception
.retry
);
4262 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4263 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4266 * sleep, with exponential backoff, and retry the LOCK operation.
4268 static unsigned long
4269 nfs4_set_lock_task_retry(unsigned long timeout
)
4271 freezable_schedule_timeout_killable(timeout
);
4273 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4274 return NFS4_LOCK_MAXTIMEOUT
;
4278 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4280 struct inode
*inode
= state
->inode
;
4281 struct nfs_server
*server
= NFS_SERVER(inode
);
4282 struct nfs_client
*clp
= server
->nfs_client
;
4283 struct nfs_lockt_args arg
= {
4284 .fh
= NFS_FH(inode
),
4287 struct nfs_lockt_res res
= {
4290 struct rpc_message msg
= {
4291 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4294 .rpc_cred
= state
->owner
->so_cred
,
4296 struct nfs4_lock_state
*lsp
;
4299 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4300 status
= nfs4_set_lock_state(state
, request
);
4303 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4304 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4305 arg
.lock_owner
.s_dev
= server
->s_dev
;
4306 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4309 request
->fl_type
= F_UNLCK
;
4311 case -NFS4ERR_DENIED
:
4314 request
->fl_ops
->fl_release_private(request
);
4319 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4321 struct nfs4_exception exception
= { };
4325 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4326 _nfs4_proc_getlk(state
, cmd
, request
),
4328 } while (exception
.retry
);
4332 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4335 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4337 res
= posix_lock_file_wait(file
, fl
);
4340 res
= flock_lock_file_wait(file
, fl
);
4348 struct nfs4_unlockdata
{
4349 struct nfs_locku_args arg
;
4350 struct nfs_locku_res res
;
4351 struct nfs4_lock_state
*lsp
;
4352 struct nfs_open_context
*ctx
;
4353 struct file_lock fl
;
4354 const struct nfs_server
*server
;
4355 unsigned long timestamp
;
4358 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4359 struct nfs_open_context
*ctx
,
4360 struct nfs4_lock_state
*lsp
,
4361 struct nfs_seqid
*seqid
)
4363 struct nfs4_unlockdata
*p
;
4364 struct inode
*inode
= lsp
->ls_state
->inode
;
4366 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4369 p
->arg
.fh
= NFS_FH(inode
);
4371 p
->arg
.seqid
= seqid
;
4372 p
->res
.seqid
= seqid
;
4373 p
->arg
.stateid
= &lsp
->ls_stateid
;
4375 atomic_inc(&lsp
->ls_count
);
4376 /* Ensure we don't close file until we're done freeing locks! */
4377 p
->ctx
= get_nfs_open_context(ctx
);
4378 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4379 p
->server
= NFS_SERVER(inode
);
4383 static void nfs4_locku_release_calldata(void *data
)
4385 struct nfs4_unlockdata
*calldata
= data
;
4386 nfs_free_seqid(calldata
->arg
.seqid
);
4387 nfs4_put_lock_state(calldata
->lsp
);
4388 put_nfs_open_context(calldata
->ctx
);
4392 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4394 struct nfs4_unlockdata
*calldata
= data
;
4396 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4398 switch (task
->tk_status
) {
4400 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4401 &calldata
->res
.stateid
);
4402 renew_lease(calldata
->server
, calldata
->timestamp
);
4404 case -NFS4ERR_BAD_STATEID
:
4405 case -NFS4ERR_OLD_STATEID
:
4406 case -NFS4ERR_STALE_STATEID
:
4407 case -NFS4ERR_EXPIRED
:
4410 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4411 rpc_restart_call_prepare(task
);
4413 nfs_release_seqid(calldata
->arg
.seqid
);
4416 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4418 struct nfs4_unlockdata
*calldata
= data
;
4420 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4422 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4423 /* Note: exit _without_ running nfs4_locku_done */
4424 task
->tk_action
= NULL
;
4427 calldata
->timestamp
= jiffies
;
4428 if (nfs4_setup_sequence(calldata
->server
,
4429 &calldata
->arg
.seq_args
,
4430 &calldata
->res
.seq_res
,
4432 nfs_release_seqid(calldata
->arg
.seqid
);
4434 rpc_call_start(task
);
4437 static const struct rpc_call_ops nfs4_locku_ops
= {
4438 .rpc_call_prepare
= nfs4_locku_prepare
,
4439 .rpc_call_done
= nfs4_locku_done
,
4440 .rpc_release
= nfs4_locku_release_calldata
,
4443 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4444 struct nfs_open_context
*ctx
,
4445 struct nfs4_lock_state
*lsp
,
4446 struct nfs_seqid
*seqid
)
4448 struct nfs4_unlockdata
*data
;
4449 struct rpc_message msg
= {
4450 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4451 .rpc_cred
= ctx
->cred
,
4453 struct rpc_task_setup task_setup_data
= {
4454 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4455 .rpc_message
= &msg
,
4456 .callback_ops
= &nfs4_locku_ops
,
4457 .workqueue
= nfsiod_workqueue
,
4458 .flags
= RPC_TASK_ASYNC
,
4461 /* Ensure this is an unlock - when canceling a lock, the
4462 * canceled lock is passed in, and it won't be an unlock.
4464 fl
->fl_type
= F_UNLCK
;
4466 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4468 nfs_free_seqid(seqid
);
4469 return ERR_PTR(-ENOMEM
);
4472 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4473 msg
.rpc_argp
= &data
->arg
;
4474 msg
.rpc_resp
= &data
->res
;
4475 task_setup_data
.callback_data
= data
;
4476 return rpc_run_task(&task_setup_data
);
4479 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4481 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4482 struct nfs_seqid
*seqid
;
4483 struct nfs4_lock_state
*lsp
;
4484 struct rpc_task
*task
;
4486 unsigned char fl_flags
= request
->fl_flags
;
4488 status
= nfs4_set_lock_state(state
, request
);
4489 /* Unlock _before_ we do the RPC call */
4490 request
->fl_flags
|= FL_EXISTS
;
4491 down_read(&nfsi
->rwsem
);
4492 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4493 up_read(&nfsi
->rwsem
);
4496 up_read(&nfsi
->rwsem
);
4499 /* Is this a delegated lock? */
4500 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4502 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4503 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4507 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4508 status
= PTR_ERR(task
);
4511 status
= nfs4_wait_for_completion_rpc_task(task
);
4514 request
->fl_flags
= fl_flags
;
4518 struct nfs4_lockdata
{
4519 struct nfs_lock_args arg
;
4520 struct nfs_lock_res res
;
4521 struct nfs4_lock_state
*lsp
;
4522 struct nfs_open_context
*ctx
;
4523 struct file_lock fl
;
4524 unsigned long timestamp
;
4527 struct nfs_server
*server
;
4530 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4531 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4534 struct nfs4_lockdata
*p
;
4535 struct inode
*inode
= lsp
->ls_state
->inode
;
4536 struct nfs_server
*server
= NFS_SERVER(inode
);
4538 p
= kzalloc(sizeof(*p
), gfp_mask
);
4542 p
->arg
.fh
= NFS_FH(inode
);
4544 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4545 if (p
->arg
.open_seqid
== NULL
)
4547 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4548 if (p
->arg
.lock_seqid
== NULL
)
4549 goto out_free_seqid
;
4550 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4551 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4552 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4553 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4554 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4557 atomic_inc(&lsp
->ls_count
);
4558 p
->ctx
= get_nfs_open_context(ctx
);
4559 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4562 nfs_free_seqid(p
->arg
.open_seqid
);
4568 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4570 struct nfs4_lockdata
*data
= calldata
;
4571 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4573 dprintk("%s: begin!\n", __func__
);
4574 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4576 /* Do we need to do an open_to_lock_owner? */
4577 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4578 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4579 goto out_release_lock_seqid
;
4580 data
->arg
.open_stateid
= &state
->stateid
;
4581 data
->arg
.new_lock_owner
= 1;
4582 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4584 data
->arg
.new_lock_owner
= 0;
4585 data
->timestamp
= jiffies
;
4586 if (nfs4_setup_sequence(data
->server
,
4587 &data
->arg
.seq_args
,
4590 rpc_call_start(task
);
4593 nfs_release_seqid(data
->arg
.open_seqid
);
4594 out_release_lock_seqid
:
4595 nfs_release_seqid(data
->arg
.lock_seqid
);
4596 dprintk("%s: done!, ret = %d\n", __func__
, task
->tk_status
);
4599 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4601 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4602 nfs4_lock_prepare(task
, calldata
);
4605 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4607 struct nfs4_lockdata
*data
= calldata
;
4609 dprintk("%s: begin!\n", __func__
);
4611 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4614 data
->rpc_status
= task
->tk_status
;
4615 if (data
->arg
.new_lock_owner
!= 0) {
4616 if (data
->rpc_status
== 0)
4617 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4621 if (data
->rpc_status
== 0) {
4622 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4623 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4624 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4627 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4630 static void nfs4_lock_release(void *calldata
)
4632 struct nfs4_lockdata
*data
= calldata
;
4634 dprintk("%s: begin!\n", __func__
);
4635 nfs_free_seqid(data
->arg
.open_seqid
);
4636 if (data
->cancelled
!= 0) {
4637 struct rpc_task
*task
;
4638 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4639 data
->arg
.lock_seqid
);
4641 rpc_put_task_async(task
);
4642 dprintk("%s: cancelling lock!\n", __func__
);
4644 nfs_free_seqid(data
->arg
.lock_seqid
);
4645 nfs4_put_lock_state(data
->lsp
);
4646 put_nfs_open_context(data
->ctx
);
4648 dprintk("%s: done!\n", __func__
);
4651 static const struct rpc_call_ops nfs4_lock_ops
= {
4652 .rpc_call_prepare
= nfs4_lock_prepare
,
4653 .rpc_call_done
= nfs4_lock_done
,
4654 .rpc_release
= nfs4_lock_release
,
4657 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4658 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4659 .rpc_call_done
= nfs4_lock_done
,
4660 .rpc_release
= nfs4_lock_release
,
4663 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4666 case -NFS4ERR_ADMIN_REVOKED
:
4667 case -NFS4ERR_BAD_STATEID
:
4668 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4669 if (new_lock_owner
!= 0 ||
4670 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4671 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4673 case -NFS4ERR_STALE_STATEID
:
4674 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4675 case -NFS4ERR_EXPIRED
:
4676 nfs4_schedule_lease_recovery(server
->nfs_client
);
4680 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4682 struct nfs4_lockdata
*data
;
4683 struct rpc_task
*task
;
4684 struct rpc_message msg
= {
4685 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4686 .rpc_cred
= state
->owner
->so_cred
,
4688 struct rpc_task_setup task_setup_data
= {
4689 .rpc_client
= NFS_CLIENT(state
->inode
),
4690 .rpc_message
= &msg
,
4691 .callback_ops
= &nfs4_lock_ops
,
4692 .workqueue
= nfsiod_workqueue
,
4693 .flags
= RPC_TASK_ASYNC
,
4697 dprintk("%s: begin!\n", __func__
);
4698 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4699 fl
->fl_u
.nfs4_fl
.owner
,
4700 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4704 data
->arg
.block
= 1;
4705 if (recovery_type
> NFS_LOCK_NEW
) {
4706 if (recovery_type
== NFS_LOCK_RECLAIM
)
4707 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4708 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4710 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4711 msg
.rpc_argp
= &data
->arg
;
4712 msg
.rpc_resp
= &data
->res
;
4713 task_setup_data
.callback_data
= data
;
4714 task
= rpc_run_task(&task_setup_data
);
4716 return PTR_ERR(task
);
4717 ret
= nfs4_wait_for_completion_rpc_task(task
);
4719 ret
= data
->rpc_status
;
4721 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4722 data
->arg
.new_lock_owner
, ret
);
4724 data
->cancelled
= 1;
4726 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4730 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4732 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4733 struct nfs4_exception exception
= {
4734 .inode
= state
->inode
,
4739 /* Cache the lock if possible... */
4740 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4742 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4743 if (err
!= -NFS4ERR_DELAY
)
4745 nfs4_handle_exception(server
, err
, &exception
);
4746 } while (exception
.retry
);
4750 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4752 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4753 struct nfs4_exception exception
= {
4754 .inode
= state
->inode
,
4758 err
= nfs4_set_lock_state(state
, request
);
4762 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4764 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4768 case -NFS4ERR_GRACE
:
4769 case -NFS4ERR_DELAY
:
4770 nfs4_handle_exception(server
, err
, &exception
);
4773 } while (exception
.retry
);
4778 #if defined(CONFIG_NFS_V4_1)
4780 * nfs41_check_expired_locks - possibly free a lock stateid
4782 * @state: NFSv4 state for an inode
4784 * Returns NFS_OK if recovery for this stateid is now finished.
4785 * Otherwise a negative NFS4ERR value is returned.
4787 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4789 int status
, ret
= -NFS4ERR_BAD_STATEID
;
4790 struct nfs4_lock_state
*lsp
;
4791 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4793 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4794 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
4795 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4796 if (status
!= NFS_OK
) {
4797 /* Free the stateid unless the server
4798 * informs us the stateid is unrecognized. */
4799 if (status
!= -NFS4ERR_BAD_STATEID
)
4800 nfs41_free_stateid(server
,
4802 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
4811 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4813 int status
= NFS_OK
;
4815 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4816 status
= nfs41_check_expired_locks(state
);
4817 if (status
!= NFS_OK
)
4818 status
= nfs4_lock_expired(state
, request
);
4823 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4825 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4826 unsigned char fl_flags
= request
->fl_flags
;
4827 int status
= -ENOLCK
;
4829 if ((fl_flags
& FL_POSIX
) &&
4830 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4832 /* Is this a delegated open? */
4833 status
= nfs4_set_lock_state(state
, request
);
4836 request
->fl_flags
|= FL_ACCESS
;
4837 status
= do_vfs_lock(request
->fl_file
, request
);
4840 down_read(&nfsi
->rwsem
);
4841 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4842 /* Yes: cache locks! */
4843 /* ...but avoid races with delegation recall... */
4844 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4845 status
= do_vfs_lock(request
->fl_file
, request
);
4848 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4851 /* Note: we always want to sleep here! */
4852 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4853 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4854 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4855 "manager!\n", __func__
);
4857 up_read(&nfsi
->rwsem
);
4859 request
->fl_flags
= fl_flags
;
4863 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4865 struct nfs4_exception exception
= {
4867 .inode
= state
->inode
,
4872 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4873 if (err
== -NFS4ERR_DENIED
)
4875 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4877 } while (exception
.retry
);
4882 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4884 struct nfs_open_context
*ctx
;
4885 struct nfs4_state
*state
;
4886 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4889 /* verify open state */
4890 ctx
= nfs_file_open_context(filp
);
4893 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4896 if (IS_GETLK(cmd
)) {
4898 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4902 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4905 if (request
->fl_type
== F_UNLCK
) {
4907 return nfs4_proc_unlck(state
, cmd
, request
);
4914 * Don't rely on the VFS having checked the file open mode,
4915 * since it won't do this for flock() locks.
4917 switch (request
->fl_type
) {
4919 if (!(filp
->f_mode
& FMODE_READ
))
4923 if (!(filp
->f_mode
& FMODE_WRITE
))
4928 status
= nfs4_proc_setlk(state
, cmd
, request
);
4929 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4931 timeout
= nfs4_set_lock_task_retry(timeout
);
4932 status
= -ERESTARTSYS
;
4935 } while(status
< 0);
4939 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4941 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4942 struct nfs4_exception exception
= { };
4945 err
= nfs4_set_lock_state(state
, fl
);
4949 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4952 printk(KERN_ERR
"NFS: %s: unhandled error "
4953 "%d.\n", __func__
, err
);
4957 case -NFS4ERR_EXPIRED
:
4958 nfs4_schedule_stateid_recovery(server
, state
);
4959 case -NFS4ERR_STALE_CLIENTID
:
4960 case -NFS4ERR_STALE_STATEID
:
4961 nfs4_schedule_lease_recovery(server
->nfs_client
);
4963 case -NFS4ERR_BADSESSION
:
4964 case -NFS4ERR_BADSLOT
:
4965 case -NFS4ERR_BAD_HIGH_SLOT
:
4966 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4967 case -NFS4ERR_DEADSESSION
:
4968 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
4972 * The show must go on: exit, but mark the
4973 * stateid as needing recovery.
4975 case -NFS4ERR_DELEG_REVOKED
:
4976 case -NFS4ERR_ADMIN_REVOKED
:
4977 case -NFS4ERR_BAD_STATEID
:
4978 case -NFS4ERR_OPENMODE
:
4979 nfs4_schedule_stateid_recovery(server
, state
);
4984 * User RPCSEC_GSS context has expired.
4985 * We cannot recover this stateid now, so
4986 * skip it and allow recovery thread to
4992 case -NFS4ERR_DENIED
:
4993 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4996 case -NFS4ERR_DELAY
:
4999 err
= nfs4_handle_exception(server
, err
, &exception
);
5000 } while (exception
.retry
);
5005 struct nfs_release_lockowner_data
{
5006 struct nfs4_lock_state
*lsp
;
5007 struct nfs_server
*server
;
5008 struct nfs_release_lockowner_args args
;
5011 static void nfs4_release_lockowner_release(void *calldata
)
5013 struct nfs_release_lockowner_data
*data
= calldata
;
5014 nfs4_free_lock_state(data
->server
, data
->lsp
);
5018 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5019 .rpc_release
= nfs4_release_lockowner_release
,
5022 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
5024 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
5025 struct nfs_release_lockowner_data
*data
;
5026 struct rpc_message msg
= {
5027 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5030 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5032 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5036 data
->server
= server
;
5037 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5038 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5039 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5040 msg
.rpc_argp
= &data
->args
;
5041 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5045 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5047 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5048 const void *buf
, size_t buflen
,
5049 int flags
, int type
)
5051 if (strcmp(key
, "") != 0)
5054 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5057 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5058 void *buf
, size_t buflen
, int type
)
5060 if (strcmp(key
, "") != 0)
5063 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5066 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5067 size_t list_len
, const char *name
,
5068 size_t name_len
, int type
)
5070 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5072 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5075 if (list
&& len
<= list_len
)
5076 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5081 * nfs_fhget will use either the mounted_on_fileid or the fileid
5083 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5085 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5086 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5087 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5088 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5091 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5092 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5093 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5097 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5098 const struct qstr
*name
,
5099 struct nfs4_fs_locations
*fs_locations
,
5102 struct nfs_server
*server
= NFS_SERVER(dir
);
5104 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5106 struct nfs4_fs_locations_arg args
= {
5107 .dir_fh
= NFS_FH(dir
),
5112 struct nfs4_fs_locations_res res
= {
5113 .fs_locations
= fs_locations
,
5115 struct rpc_message msg
= {
5116 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5122 dprintk("%s: start\n", __func__
);
5124 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5125 * is not supported */
5126 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5127 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5129 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5131 nfs_fattr_init(&fs_locations
->fattr
);
5132 fs_locations
->server
= server
;
5133 fs_locations
->nlocations
= 0;
5134 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5135 dprintk("%s: returned status = %d\n", __func__
, status
);
5139 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5140 const struct qstr
*name
,
5141 struct nfs4_fs_locations
*fs_locations
,
5144 struct nfs4_exception exception
= { };
5147 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5148 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5150 } while (exception
.retry
);
5154 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5157 struct nfs4_secinfo_arg args
= {
5158 .dir_fh
= NFS_FH(dir
),
5161 struct nfs4_secinfo_res res
= {
5164 struct rpc_message msg
= {
5165 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5170 dprintk("NFS call secinfo %s\n", name
->name
);
5171 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5172 dprintk("NFS reply secinfo: %d\n", status
);
5176 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5177 struct nfs4_secinfo_flavors
*flavors
)
5179 struct nfs4_exception exception
= { };
5182 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5183 _nfs4_proc_secinfo(dir
, name
, flavors
),
5185 } while (exception
.retry
);
5189 #ifdef CONFIG_NFS_V4_1
5191 * Check the exchange flags returned by the server for invalid flags, having
5192 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5195 static int nfs4_check_cl_exchange_flags(u32 flags
)
5197 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5199 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5200 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5202 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5206 return -NFS4ERR_INVAL
;
5210 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5211 struct nfs41_server_scope
*b
)
5213 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5214 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5221 * nfs4_proc_bind_conn_to_session()
5223 * The 4.1 client currently uses the same TCP connection for the
5224 * fore and backchannel.
5226 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5229 struct nfs41_bind_conn_to_session_res res
;
5230 struct rpc_message msg
= {
5232 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5238 dprintk("--> %s\n", __func__
);
5240 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5241 if (unlikely(res
.session
== NULL
)) {
5246 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5248 if (memcmp(res
.session
->sess_id
.data
,
5249 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5250 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5254 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5255 dprintk("NFS: %s: Unexpected direction from server\n",
5260 if (res
.use_conn_in_rdma_mode
) {
5261 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5270 dprintk("<-- %s status= %d\n", __func__
, status
);
5275 * nfs4_proc_exchange_id()
5277 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5279 * Since the clientid has expired, all compounds using sessions
5280 * associated with the stale clientid will be returning
5281 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5282 * be in some phase of session reset.
5284 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5286 nfs4_verifier verifier
;
5287 struct nfs41_exchange_id_args args
= {
5288 .verifier
= &verifier
,
5290 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5292 struct nfs41_exchange_id_res res
= {
5296 struct rpc_message msg
= {
5297 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5303 nfs4_init_boot_verifier(clp
, &verifier
);
5304 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5306 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5307 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5308 args
.id_len
, args
.id
);
5310 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5312 if (unlikely(res
.server_owner
== NULL
)) {
5317 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5319 if (unlikely(res
.server_scope
== NULL
)) {
5321 goto out_server_owner
;
5324 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5325 if (unlikely(res
.impl_id
== NULL
)) {
5327 goto out_server_scope
;
5330 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5332 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5335 clp
->cl_clientid
= res
.clientid
;
5336 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5337 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5338 clp
->cl_seqid
= res
.seqid
;
5340 kfree(clp
->cl_serverowner
);
5341 clp
->cl_serverowner
= res
.server_owner
;
5342 res
.server_owner
= NULL
;
5344 /* use the most recent implementation id */
5345 kfree(clp
->cl_implid
);
5346 clp
->cl_implid
= res
.impl_id
;
5348 if (clp
->cl_serverscope
!= NULL
&&
5349 !nfs41_same_server_scope(clp
->cl_serverscope
,
5350 res
.server_scope
)) {
5351 dprintk("%s: server_scope mismatch detected\n",
5353 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5354 kfree(clp
->cl_serverscope
);
5355 clp
->cl_serverscope
= NULL
;
5358 if (clp
->cl_serverscope
== NULL
) {
5359 clp
->cl_serverscope
= res
.server_scope
;
5366 kfree(res
.server_owner
);
5368 kfree(res
.server_scope
);
5370 if (clp
->cl_implid
!= NULL
)
5371 dprintk("NFS reply exchange_id: Server Implementation ID: "
5372 "domain: %s, name: %s, date: %llu,%u\n",
5373 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5374 clp
->cl_implid
->date
.seconds
,
5375 clp
->cl_implid
->date
.nseconds
);
5376 dprintk("NFS reply exchange_id: %d\n", status
);
5380 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5381 struct rpc_cred
*cred
)
5383 struct rpc_message msg
= {
5384 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5390 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5392 dprintk("NFS: Got error %d from the server %s on "
5393 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5397 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5398 struct rpc_cred
*cred
)
5403 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5404 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5406 case -NFS4ERR_DELAY
:
5407 case -NFS4ERR_CLIENTID_BUSY
:
5417 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5419 struct rpc_cred
*cred
;
5422 if (clp
->cl_mvops
->minor_version
< 1)
5424 if (clp
->cl_exchange_flags
== 0)
5426 if (clp
->cl_preserve_clid
)
5428 cred
= nfs4_get_exchange_id_cred(clp
);
5429 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5434 case -NFS4ERR_STALE_CLIENTID
:
5435 clp
->cl_exchange_flags
= 0;
5441 struct nfs4_get_lease_time_data
{
5442 struct nfs4_get_lease_time_args
*args
;
5443 struct nfs4_get_lease_time_res
*res
;
5444 struct nfs_client
*clp
;
5447 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5451 struct nfs4_get_lease_time_data
*data
=
5452 (struct nfs4_get_lease_time_data
*)calldata
;
5454 dprintk("--> %s\n", __func__
);
5455 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5456 /* just setup sequence, do not trigger session recovery
5457 since we're invoked within one */
5458 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
5459 &data
->args
->la_seq_args
,
5460 &data
->res
->lr_seq_res
, task
);
5463 rpc_call_start(task
);
5464 dprintk("<-- %s\n", __func__
);
5468 * Called from nfs4_state_manager thread for session setup, so don't recover
5469 * from sequence operation or clientid errors.
5471 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5473 struct nfs4_get_lease_time_data
*data
=
5474 (struct nfs4_get_lease_time_data
*)calldata
;
5476 dprintk("--> %s\n", __func__
);
5477 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5479 switch (task
->tk_status
) {
5480 case -NFS4ERR_DELAY
:
5481 case -NFS4ERR_GRACE
:
5482 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5483 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5484 task
->tk_status
= 0;
5486 case -NFS4ERR_RETRY_UNCACHED_REP
:
5487 rpc_restart_call_prepare(task
);
5490 dprintk("<-- %s\n", __func__
);
5493 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5494 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5495 .rpc_call_done
= nfs4_get_lease_time_done
,
5498 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5500 struct rpc_task
*task
;
5501 struct nfs4_get_lease_time_args args
;
5502 struct nfs4_get_lease_time_res res
= {
5503 .lr_fsinfo
= fsinfo
,
5505 struct nfs4_get_lease_time_data data
= {
5510 struct rpc_message msg
= {
5511 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5515 struct rpc_task_setup task_setup
= {
5516 .rpc_client
= clp
->cl_rpcclient
,
5517 .rpc_message
= &msg
,
5518 .callback_ops
= &nfs4_get_lease_time_ops
,
5519 .callback_data
= &data
,
5520 .flags
= RPC_TASK_TIMEOUT
,
5524 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5525 dprintk("--> %s\n", __func__
);
5526 task
= rpc_run_task(&task_setup
);
5529 status
= PTR_ERR(task
);
5531 status
= task
->tk_status
;
5534 dprintk("<-- %s return %d\n", __func__
, status
);
5540 * Initialize the values to be used by the client in CREATE_SESSION
5541 * If nfs4_init_session set the fore channel request and response sizes,
5544 * Set the back channel max_resp_sz_cached to zero to force the client to
5545 * always set csa_cachethis to FALSE because the current implementation
5546 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5548 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5550 struct nfs4_session
*session
= args
->client
->cl_session
;
5551 unsigned int mxrqst_sz
= session
->fc_target_max_rqst_sz
,
5552 mxresp_sz
= session
->fc_target_max_resp_sz
;
5555 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5557 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5558 /* Fore channel attributes */
5559 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5560 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5561 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5562 args
->fc_attrs
.max_reqs
= max_session_slots
;
5564 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5565 "max_ops=%u max_reqs=%u\n",
5567 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5568 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5570 /* Back channel attributes */
5571 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5572 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5573 args
->bc_attrs
.max_resp_sz_cached
= 0;
5574 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5575 args
->bc_attrs
.max_reqs
= 1;
5577 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5578 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5580 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5581 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5582 args
->bc_attrs
.max_reqs
);
5585 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5587 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5588 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5590 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5593 * Our requested max_ops is the minimum we need; we're not
5594 * prepared to break up compounds into smaller pieces than that.
5595 * So, no point even trying to continue if the server won't
5598 if (rcvd
->max_ops
< sent
->max_ops
)
5600 if (rcvd
->max_reqs
== 0)
5602 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5603 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5607 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5609 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5610 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5612 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5614 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5616 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5618 /* These would render the backchannel useless: */
5619 if (rcvd
->max_ops
!= sent
->max_ops
)
5621 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5626 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5627 struct nfs4_session
*session
)
5631 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5634 return nfs4_verify_back_channel_attrs(args
, session
);
5637 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5638 struct rpc_cred
*cred
)
5640 struct nfs4_session
*session
= clp
->cl_session
;
5641 struct nfs41_create_session_args args
= {
5643 .cb_program
= NFS4_CALLBACK
,
5645 struct nfs41_create_session_res res
= {
5648 struct rpc_message msg
= {
5649 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5656 nfs4_init_channel_attrs(&args
);
5657 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5659 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5662 /* Verify the session's negotiated channel_attrs values */
5663 status
= nfs4_verify_channel_attrs(&args
, session
);
5664 /* Increment the clientid slot sequence id */
5672 * Issues a CREATE_SESSION operation to the server.
5673 * It is the responsibility of the caller to verify the session is
5674 * expired before calling this routine.
5676 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5680 struct nfs4_session
*session
= clp
->cl_session
;
5682 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5684 status
= _nfs4_proc_create_session(clp
, cred
);
5688 /* Init or reset the session slot tables */
5689 status
= nfs4_setup_session_slot_tables(session
);
5690 dprintk("slot table setup returned %d\n", status
);
5694 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5695 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5696 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5698 dprintk("<-- %s\n", __func__
);
5703 * Issue the over-the-wire RPC DESTROY_SESSION.
5704 * The caller must serialize access to this routine.
5706 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5707 struct rpc_cred
*cred
)
5709 struct rpc_message msg
= {
5710 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5711 .rpc_argp
= session
,
5716 dprintk("--> nfs4_proc_destroy_session\n");
5718 /* session is still being setup */
5719 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5722 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5725 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5726 "Session has been destroyed regardless...\n", status
);
5728 dprintk("<-- nfs4_proc_destroy_session\n");
5733 * Renew the cl_session lease.
5735 struct nfs4_sequence_data
{
5736 struct nfs_client
*clp
;
5737 struct nfs4_sequence_args args
;
5738 struct nfs4_sequence_res res
;
5741 static void nfs41_sequence_release(void *data
)
5743 struct nfs4_sequence_data
*calldata
= data
;
5744 struct nfs_client
*clp
= calldata
->clp
;
5746 if (atomic_read(&clp
->cl_count
) > 1)
5747 nfs4_schedule_state_renewal(clp
);
5748 nfs_put_client(clp
);
5752 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5754 switch(task
->tk_status
) {
5755 case -NFS4ERR_DELAY
:
5756 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5759 nfs4_schedule_lease_recovery(clp
);
5764 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5766 struct nfs4_sequence_data
*calldata
= data
;
5767 struct nfs_client
*clp
= calldata
->clp
;
5769 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5772 if (task
->tk_status
< 0) {
5773 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5774 if (atomic_read(&clp
->cl_count
) == 1)
5777 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5778 rpc_restart_call_prepare(task
);
5782 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5784 dprintk("<-- %s\n", __func__
);
5787 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5789 struct nfs4_sequence_data
*calldata
= data
;
5790 struct nfs_client
*clp
= calldata
->clp
;
5791 struct nfs4_sequence_args
*args
;
5792 struct nfs4_sequence_res
*res
;
5794 args
= task
->tk_msg
.rpc_argp
;
5795 res
= task
->tk_msg
.rpc_resp
;
5797 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
))
5799 rpc_call_start(task
);
5802 static void nfs41_sequence_prepare_privileged(struct rpc_task
*task
, void *data
)
5804 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5805 nfs41_sequence_prepare(task
, data
);
5808 static const struct rpc_call_ops nfs41_sequence_ops
= {
5809 .rpc_call_done
= nfs41_sequence_call_done
,
5810 .rpc_call_prepare
= nfs41_sequence_prepare
,
5811 .rpc_release
= nfs41_sequence_release
,
5814 static const struct rpc_call_ops nfs41_sequence_privileged_ops
= {
5815 .rpc_call_done
= nfs41_sequence_call_done
,
5816 .rpc_call_prepare
= nfs41_sequence_prepare_privileged
,
5817 .rpc_release
= nfs41_sequence_release
,
5820 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
,
5821 const struct rpc_call_ops
*seq_ops
)
5823 struct nfs4_sequence_data
*calldata
;
5824 struct rpc_message msg
= {
5825 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5828 struct rpc_task_setup task_setup_data
= {
5829 .rpc_client
= clp
->cl_rpcclient
,
5830 .rpc_message
= &msg
,
5831 .callback_ops
= seq_ops
,
5832 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5835 if (!atomic_inc_not_zero(&clp
->cl_count
))
5836 return ERR_PTR(-EIO
);
5837 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5838 if (calldata
== NULL
) {
5839 nfs_put_client(clp
);
5840 return ERR_PTR(-ENOMEM
);
5842 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
5843 msg
.rpc_argp
= &calldata
->args
;
5844 msg
.rpc_resp
= &calldata
->res
;
5845 calldata
->clp
= clp
;
5846 task_setup_data
.callback_data
= calldata
;
5848 return rpc_run_task(&task_setup_data
);
5851 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
5853 struct rpc_task
*task
;
5856 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
5858 task
= _nfs41_proc_sequence(clp
, cred
, &nfs41_sequence_ops
);
5860 ret
= PTR_ERR(task
);
5862 rpc_put_task_async(task
);
5863 dprintk("<-- %s status=%d\n", __func__
, ret
);
5867 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5869 struct rpc_task
*task
;
5872 task
= _nfs41_proc_sequence(clp
, cred
, &nfs41_sequence_privileged_ops
);
5874 ret
= PTR_ERR(task
);
5877 ret
= rpc_wait_for_completion_task(task
);
5879 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5881 if (task
->tk_status
== 0)
5882 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5883 ret
= task
->tk_status
;
5887 dprintk("<-- %s status=%d\n", __func__
, ret
);
5891 struct nfs4_reclaim_complete_data
{
5892 struct nfs_client
*clp
;
5893 struct nfs41_reclaim_complete_args arg
;
5894 struct nfs41_reclaim_complete_res res
;
5897 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5899 struct nfs4_reclaim_complete_data
*calldata
= data
;
5901 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5902 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5903 &calldata
->arg
.seq_args
,
5904 &calldata
->res
.seq_res
, task
))
5907 rpc_call_start(task
);
5910 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5912 switch(task
->tk_status
) {
5914 case -NFS4ERR_COMPLETE_ALREADY
:
5915 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5917 case -NFS4ERR_DELAY
:
5918 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5920 case -NFS4ERR_RETRY_UNCACHED_REP
:
5923 nfs4_schedule_lease_recovery(clp
);
5928 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5930 struct nfs4_reclaim_complete_data
*calldata
= data
;
5931 struct nfs_client
*clp
= calldata
->clp
;
5932 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5934 dprintk("--> %s\n", __func__
);
5935 if (!nfs41_sequence_done(task
, res
))
5938 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5939 rpc_restart_call_prepare(task
);
5942 dprintk("<-- %s\n", __func__
);
5945 static void nfs4_free_reclaim_complete_data(void *data
)
5947 struct nfs4_reclaim_complete_data
*calldata
= data
;
5952 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5953 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5954 .rpc_call_done
= nfs4_reclaim_complete_done
,
5955 .rpc_release
= nfs4_free_reclaim_complete_data
,
5959 * Issue a global reclaim complete.
5961 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5963 struct nfs4_reclaim_complete_data
*calldata
;
5964 struct rpc_task
*task
;
5965 struct rpc_message msg
= {
5966 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5968 struct rpc_task_setup task_setup_data
= {
5969 .rpc_client
= clp
->cl_rpcclient
,
5970 .rpc_message
= &msg
,
5971 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5972 .flags
= RPC_TASK_ASYNC
,
5974 int status
= -ENOMEM
;
5976 dprintk("--> %s\n", __func__
);
5977 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5978 if (calldata
== NULL
)
5980 calldata
->clp
= clp
;
5981 calldata
->arg
.one_fs
= 0;
5983 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
5984 msg
.rpc_argp
= &calldata
->arg
;
5985 msg
.rpc_resp
= &calldata
->res
;
5986 task_setup_data
.callback_data
= calldata
;
5987 task
= rpc_run_task(&task_setup_data
);
5989 status
= PTR_ERR(task
);
5992 status
= nfs4_wait_for_completion_rpc_task(task
);
5994 status
= task
->tk_status
;
5998 dprintk("<-- %s status=%d\n", __func__
, status
);
6003 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6005 struct nfs4_layoutget
*lgp
= calldata
;
6006 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6008 dprintk("--> %s\n", __func__
);
6009 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6010 * right now covering the LAYOUTGET we are about to send.
6011 * However, that is not so catastrophic, and there seems
6012 * to be no way to prevent it completely.
6014 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
6015 &lgp
->res
.seq_res
, task
))
6017 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6018 NFS_I(lgp
->args
.inode
)->layout
,
6019 lgp
->args
.ctx
->state
)) {
6020 rpc_exit(task
, NFS4_OK
);
6023 rpc_call_start(task
);
6026 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6028 struct nfs4_layoutget
*lgp
= calldata
;
6029 struct inode
*inode
= lgp
->args
.inode
;
6030 struct nfs_server
*server
= NFS_SERVER(inode
);
6031 struct pnfs_layout_hdr
*lo
;
6032 struct nfs4_state
*state
= NULL
;
6034 dprintk("--> %s\n", __func__
);
6036 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
6039 switch (task
->tk_status
) {
6042 case -NFS4ERR_LAYOUTTRYLATER
:
6043 case -NFS4ERR_RECALLCONFLICT
:
6044 task
->tk_status
= -NFS4ERR_DELAY
;
6046 case -NFS4ERR_EXPIRED
:
6047 case -NFS4ERR_BAD_STATEID
:
6048 spin_lock(&inode
->i_lock
);
6049 lo
= NFS_I(inode
)->layout
;
6050 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6051 spin_unlock(&inode
->i_lock
);
6052 /* If the open stateid was bad, then recover it. */
6053 state
= lgp
->args
.ctx
->state
;
6057 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6058 spin_unlock(&inode
->i_lock
);
6059 /* Mark the bad layout state as invalid, then
6060 * retry using the open stateid. */
6061 pnfs_free_lseg_list(&head
);
6064 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6065 rpc_restart_call_prepare(task
);
6067 dprintk("<-- %s\n", __func__
);
6070 static size_t max_response_pages(struct nfs_server
*server
)
6072 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6073 return nfs_page_array_len(0, max_resp_sz
);
6076 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6083 for (i
= 0; i
< size
; i
++) {
6086 __free_page(pages
[i
]);
6091 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6093 struct page
**pages
;
6096 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6098 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6102 for (i
= 0; i
< size
; i
++) {
6103 pages
[i
] = alloc_page(gfp_flags
);
6105 dprintk("%s: failed to allocate page\n", __func__
);
6106 nfs4_free_pages(pages
, size
);
6114 static void nfs4_layoutget_release(void *calldata
)
6116 struct nfs4_layoutget
*lgp
= calldata
;
6117 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6118 size_t max_pages
= max_response_pages(server
);
6120 dprintk("--> %s\n", __func__
);
6121 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6122 put_nfs_open_context(lgp
->args
.ctx
);
6124 dprintk("<-- %s\n", __func__
);
6127 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6128 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6129 .rpc_call_done
= nfs4_layoutget_done
,
6130 .rpc_release
= nfs4_layoutget_release
,
6133 struct pnfs_layout_segment
*
6134 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6136 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6137 size_t max_pages
= max_response_pages(server
);
6138 struct rpc_task
*task
;
6139 struct rpc_message msg
= {
6140 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6141 .rpc_argp
= &lgp
->args
,
6142 .rpc_resp
= &lgp
->res
,
6144 struct rpc_task_setup task_setup_data
= {
6145 .rpc_client
= server
->client
,
6146 .rpc_message
= &msg
,
6147 .callback_ops
= &nfs4_layoutget_call_ops
,
6148 .callback_data
= lgp
,
6149 .flags
= RPC_TASK_ASYNC
,
6151 struct pnfs_layout_segment
*lseg
= NULL
;
6154 dprintk("--> %s\n", __func__
);
6156 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6157 if (!lgp
->args
.layout
.pages
) {
6158 nfs4_layoutget_release(lgp
);
6159 return ERR_PTR(-ENOMEM
);
6161 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6163 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6164 lgp
->res
.seq_res
.sr_slot
= NULL
;
6165 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6166 task
= rpc_run_task(&task_setup_data
);
6168 return ERR_CAST(task
);
6169 status
= nfs4_wait_for_completion_rpc_task(task
);
6171 status
= task
->tk_status
;
6173 lseg
= pnfs_layout_process(lgp
);
6175 dprintk("<-- %s status=%d\n", __func__
, status
);
6177 return ERR_PTR(status
);
6182 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6184 struct nfs4_layoutreturn
*lrp
= calldata
;
6186 dprintk("--> %s\n", __func__
);
6187 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
6188 &lrp
->res
.seq_res
, task
))
6190 rpc_call_start(task
);
6193 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6195 struct nfs4_layoutreturn
*lrp
= calldata
;
6196 struct nfs_server
*server
;
6198 dprintk("--> %s\n", __func__
);
6200 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
6203 server
= NFS_SERVER(lrp
->args
.inode
);
6204 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6205 rpc_restart_call_prepare(task
);
6208 dprintk("<-- %s\n", __func__
);
6211 static void nfs4_layoutreturn_release(void *calldata
)
6213 struct nfs4_layoutreturn
*lrp
= calldata
;
6214 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6216 dprintk("--> %s\n", __func__
);
6217 spin_lock(&lo
->plh_inode
->i_lock
);
6218 if (lrp
->res
.lrs_present
)
6219 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6220 lo
->plh_block_lgets
--;
6221 spin_unlock(&lo
->plh_inode
->i_lock
);
6222 pnfs_put_layout_hdr(lrp
->args
.layout
);
6224 dprintk("<-- %s\n", __func__
);
6227 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6228 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6229 .rpc_call_done
= nfs4_layoutreturn_done
,
6230 .rpc_release
= nfs4_layoutreturn_release
,
6233 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6235 struct rpc_task
*task
;
6236 struct rpc_message msg
= {
6237 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6238 .rpc_argp
= &lrp
->args
,
6239 .rpc_resp
= &lrp
->res
,
6241 struct rpc_task_setup task_setup_data
= {
6242 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6243 .rpc_message
= &msg
,
6244 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6245 .callback_data
= lrp
,
6249 dprintk("--> %s\n", __func__
);
6250 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6251 task
= rpc_run_task(&task_setup_data
);
6253 return PTR_ERR(task
);
6254 status
= task
->tk_status
;
6255 dprintk("<-- %s status=%d\n", __func__
, status
);
6261 * Retrieve the list of Data Server devices from the MDS.
6263 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6264 const struct nfs_fh
*fh
,
6265 struct pnfs_devicelist
*devlist
)
6267 struct nfs4_getdevicelist_args args
= {
6269 .layoutclass
= server
->pnfs_curr_ld
->id
,
6271 struct nfs4_getdevicelist_res res
= {
6274 struct rpc_message msg
= {
6275 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6281 dprintk("--> %s\n", __func__
);
6282 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6284 dprintk("<-- %s status=%d\n", __func__
, status
);
6288 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6289 const struct nfs_fh
*fh
,
6290 struct pnfs_devicelist
*devlist
)
6292 struct nfs4_exception exception
= { };
6296 err
= nfs4_handle_exception(server
,
6297 _nfs4_getdevicelist(server
, fh
, devlist
),
6299 } while (exception
.retry
);
6301 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6302 err
, devlist
->num_devs
);
6306 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6309 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6311 struct nfs4_getdeviceinfo_args args
= {
6314 struct nfs4_getdeviceinfo_res res
= {
6317 struct rpc_message msg
= {
6318 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6324 dprintk("--> %s\n", __func__
);
6325 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6326 dprintk("<-- %s status=%d\n", __func__
, status
);
6331 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6333 struct nfs4_exception exception
= { };
6337 err
= nfs4_handle_exception(server
,
6338 _nfs4_proc_getdeviceinfo(server
, pdev
),
6340 } while (exception
.retry
);
6343 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6345 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6347 struct nfs4_layoutcommit_data
*data
= calldata
;
6348 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6350 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
6351 &data
->res
.seq_res
, task
))
6353 rpc_call_start(task
);
6357 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6359 struct nfs4_layoutcommit_data
*data
= calldata
;
6360 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6362 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6365 switch (task
->tk_status
) { /* Just ignore these failures */
6366 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6367 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6368 case -NFS4ERR_BADLAYOUT
: /* no layout */
6369 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6370 task
->tk_status
= 0;
6373 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6377 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6378 rpc_restart_call_prepare(task
);
6384 static void nfs4_layoutcommit_release(void *calldata
)
6386 struct nfs4_layoutcommit_data
*data
= calldata
;
6387 struct pnfs_layout_segment
*lseg
, *tmp
;
6388 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
6390 pnfs_cleanup_layoutcommit(data
);
6391 /* Matched by references in pnfs_set_layoutcommit */
6392 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
6393 list_del_init(&lseg
->pls_lc_list
);
6394 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
6396 pnfs_put_lseg(lseg
);
6399 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
6400 smp_mb__after_clear_bit();
6401 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
6403 put_rpccred(data
->cred
);
6407 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6408 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6409 .rpc_call_done
= nfs4_layoutcommit_done
,
6410 .rpc_release
= nfs4_layoutcommit_release
,
6414 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6416 struct rpc_message msg
= {
6417 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6418 .rpc_argp
= &data
->args
,
6419 .rpc_resp
= &data
->res
,
6420 .rpc_cred
= data
->cred
,
6422 struct rpc_task_setup task_setup_data
= {
6423 .task
= &data
->task
,
6424 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6425 .rpc_message
= &msg
,
6426 .callback_ops
= &nfs4_layoutcommit_ops
,
6427 .callback_data
= data
,
6428 .flags
= RPC_TASK_ASYNC
,
6430 struct rpc_task
*task
;
6433 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6434 "lbw: %llu inode %lu\n",
6435 data
->task
.tk_pid
, sync
,
6436 data
->args
.lastbytewritten
,
6437 data
->args
.inode
->i_ino
);
6439 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6440 task
= rpc_run_task(&task_setup_data
);
6442 return PTR_ERR(task
);
6445 status
= nfs4_wait_for_completion_rpc_task(task
);
6448 status
= task
->tk_status
;
6450 dprintk("%s: status %d\n", __func__
, status
);
6456 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6457 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6459 struct nfs41_secinfo_no_name_args args
= {
6460 .style
= SECINFO_STYLE_CURRENT_FH
,
6462 struct nfs4_secinfo_res res
= {
6465 struct rpc_message msg
= {
6466 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6470 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6474 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6475 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6477 struct nfs4_exception exception
= { };
6480 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6483 case -NFS4ERR_WRONGSEC
:
6484 case -NFS4ERR_NOTSUPP
:
6487 err
= nfs4_handle_exception(server
, err
, &exception
);
6489 } while (exception
.retry
);
6495 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6496 struct nfs_fsinfo
*info
)
6500 rpc_authflavor_t flavor
;
6501 struct nfs4_secinfo_flavors
*flavors
;
6503 page
= alloc_page(GFP_KERNEL
);
6509 flavors
= page_address(page
);
6510 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6513 * Fall back on "guess and check" method if
6514 * the server doesn't support SECINFO_NO_NAME
6516 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6517 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6523 flavor
= nfs_find_best_sec(flavors
);
6525 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6535 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6538 struct nfs41_test_stateid_args args
= {
6541 struct nfs41_test_stateid_res res
;
6542 struct rpc_message msg
= {
6543 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6548 dprintk("NFS call test_stateid %p\n", stateid
);
6549 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6550 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6551 if (status
!= NFS_OK
) {
6552 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6555 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6560 * nfs41_test_stateid - perform a TEST_STATEID operation
6562 * @server: server / transport on which to perform the operation
6563 * @stateid: state ID to test
6565 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6566 * Otherwise a negative NFS4ERR value is returned if the operation
6567 * failed or the state ID is not currently valid.
6569 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6571 struct nfs4_exception exception
= { };
6574 err
= _nfs41_test_stateid(server
, stateid
);
6575 if (err
!= -NFS4ERR_DELAY
)
6577 nfs4_handle_exception(server
, err
, &exception
);
6578 } while (exception
.retry
);
6582 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6584 struct nfs41_free_stateid_args args
= {
6587 struct nfs41_free_stateid_res res
;
6588 struct rpc_message msg
= {
6589 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6595 dprintk("NFS call free_stateid %p\n", stateid
);
6596 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6597 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6598 &args
.seq_args
, &res
.seq_res
, 1);
6599 dprintk("NFS reply free_stateid: %d\n", status
);
6604 * nfs41_free_stateid - perform a FREE_STATEID operation
6606 * @server: server / transport on which to perform the operation
6607 * @stateid: state ID to release
6609 * Returns NFS_OK if the server freed "stateid". Otherwise a
6610 * negative NFS4ERR value is returned.
6612 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6614 struct nfs4_exception exception
= { };
6617 err
= _nfs4_free_stateid(server
, stateid
);
6618 if (err
!= -NFS4ERR_DELAY
)
6620 nfs4_handle_exception(server
, err
, &exception
);
6621 } while (exception
.retry
);
6625 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6626 const nfs4_stateid
*s2
)
6628 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6631 if (s1
->seqid
== s2
->seqid
)
6633 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6639 #endif /* CONFIG_NFS_V4_1 */
6641 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6642 const nfs4_stateid
*s2
)
6644 return nfs4_stateid_match(s1
, s2
);
6648 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6649 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6650 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6651 .recover_open
= nfs4_open_reclaim
,
6652 .recover_lock
= nfs4_lock_reclaim
,
6653 .establish_clid
= nfs4_init_clientid
,
6654 .get_clid_cred
= nfs4_get_setclientid_cred
,
6655 .detect_trunking
= nfs40_discover_server_trunking
,
6658 #if defined(CONFIG_NFS_V4_1)
6659 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6660 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6661 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6662 .recover_open
= nfs4_open_reclaim
,
6663 .recover_lock
= nfs4_lock_reclaim
,
6664 .establish_clid
= nfs41_init_clientid
,
6665 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6666 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6667 .detect_trunking
= nfs41_discover_server_trunking
,
6669 #endif /* CONFIG_NFS_V4_1 */
6671 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6672 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6673 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6674 .recover_open
= nfs4_open_expired
,
6675 .recover_lock
= nfs4_lock_expired
,
6676 .establish_clid
= nfs4_init_clientid
,
6677 .get_clid_cred
= nfs4_get_setclientid_cred
,
6680 #if defined(CONFIG_NFS_V4_1)
6681 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6682 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6683 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6684 .recover_open
= nfs41_open_expired
,
6685 .recover_lock
= nfs41_lock_expired
,
6686 .establish_clid
= nfs41_init_clientid
,
6687 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6689 #endif /* CONFIG_NFS_V4_1 */
6691 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6692 .sched_state_renewal
= nfs4_proc_async_renew
,
6693 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6694 .renew_lease
= nfs4_proc_renew
,
6697 #if defined(CONFIG_NFS_V4_1)
6698 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6699 .sched_state_renewal
= nfs41_proc_async_sequence
,
6700 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6701 .renew_lease
= nfs4_proc_sequence
,
6705 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6707 .call_sync
= _nfs4_call_sync
,
6708 .match_stateid
= nfs4_match_stateid
,
6709 .find_root_sec
= nfs4_find_root_sec
,
6710 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6711 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6712 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6715 #if defined(CONFIG_NFS_V4_1)
6716 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6718 .call_sync
= _nfs4_call_sync_session
,
6719 .match_stateid
= nfs41_match_stateid
,
6720 .find_root_sec
= nfs41_find_root_sec
,
6721 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6722 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6723 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6727 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6728 [0] = &nfs_v4_0_minor_ops
,
6729 #if defined(CONFIG_NFS_V4_1)
6730 [1] = &nfs_v4_1_minor_ops
,
6734 const struct inode_operations nfs4_dir_inode_operations
= {
6735 .create
= nfs_create
,
6736 .lookup
= nfs_lookup
,
6737 .atomic_open
= nfs_atomic_open
,
6739 .unlink
= nfs_unlink
,
6740 .symlink
= nfs_symlink
,
6744 .rename
= nfs_rename
,
6745 .permission
= nfs_permission
,
6746 .getattr
= nfs_getattr
,
6747 .setattr
= nfs_setattr
,
6748 .getxattr
= generic_getxattr
,
6749 .setxattr
= generic_setxattr
,
6750 .listxattr
= generic_listxattr
,
6751 .removexattr
= generic_removexattr
,
6754 static const struct inode_operations nfs4_file_inode_operations
= {
6755 .permission
= nfs_permission
,
6756 .getattr
= nfs_getattr
,
6757 .setattr
= nfs_setattr
,
6758 .getxattr
= generic_getxattr
,
6759 .setxattr
= generic_setxattr
,
6760 .listxattr
= generic_listxattr
,
6761 .removexattr
= generic_removexattr
,
6764 const struct nfs_rpc_ops nfs_v4_clientops
= {
6765 .version
= 4, /* protocol version */
6766 .dentry_ops
= &nfs4_dentry_operations
,
6767 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6768 .file_inode_ops
= &nfs4_file_inode_operations
,
6769 .file_ops
= &nfs4_file_operations
,
6770 .getroot
= nfs4_proc_get_root
,
6771 .submount
= nfs4_submount
,
6772 .try_mount
= nfs4_try_mount
,
6773 .getattr
= nfs4_proc_getattr
,
6774 .setattr
= nfs4_proc_setattr
,
6775 .lookup
= nfs4_proc_lookup
,
6776 .access
= nfs4_proc_access
,
6777 .readlink
= nfs4_proc_readlink
,
6778 .create
= nfs4_proc_create
,
6779 .remove
= nfs4_proc_remove
,
6780 .unlink_setup
= nfs4_proc_unlink_setup
,
6781 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
6782 .unlink_done
= nfs4_proc_unlink_done
,
6783 .rename
= nfs4_proc_rename
,
6784 .rename_setup
= nfs4_proc_rename_setup
,
6785 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
6786 .rename_done
= nfs4_proc_rename_done
,
6787 .link
= nfs4_proc_link
,
6788 .symlink
= nfs4_proc_symlink
,
6789 .mkdir
= nfs4_proc_mkdir
,
6790 .rmdir
= nfs4_proc_remove
,
6791 .readdir
= nfs4_proc_readdir
,
6792 .mknod
= nfs4_proc_mknod
,
6793 .statfs
= nfs4_proc_statfs
,
6794 .fsinfo
= nfs4_proc_fsinfo
,
6795 .pathconf
= nfs4_proc_pathconf
,
6796 .set_capabilities
= nfs4_server_capabilities
,
6797 .decode_dirent
= nfs4_decode_dirent
,
6798 .read_setup
= nfs4_proc_read_setup
,
6799 .read_pageio_init
= pnfs_pageio_init_read
,
6800 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
6801 .read_done
= nfs4_read_done
,
6802 .write_setup
= nfs4_proc_write_setup
,
6803 .write_pageio_init
= pnfs_pageio_init_write
,
6804 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
6805 .write_done
= nfs4_write_done
,
6806 .commit_setup
= nfs4_proc_commit_setup
,
6807 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
6808 .commit_done
= nfs4_commit_done
,
6809 .lock
= nfs4_proc_lock
,
6810 .clear_acl_cache
= nfs4_zap_acl_attr
,
6811 .close_context
= nfs4_close_context
,
6812 .open_context
= nfs4_atomic_open
,
6813 .have_delegation
= nfs4_have_delegation
,
6814 .return_delegation
= nfs4_inode_return_delegation
,
6815 .alloc_client
= nfs4_alloc_client
,
6816 .init_client
= nfs4_init_client
,
6817 .free_client
= nfs4_free_client
,
6818 .create_server
= nfs4_create_server
,
6819 .clone_server
= nfs_clone_server
,
6822 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6823 .prefix
= XATTR_NAME_NFSV4_ACL
,
6824 .list
= nfs4_xattr_list_nfs4_acl
,
6825 .get
= nfs4_xattr_get_nfs4_acl
,
6826 .set
= nfs4_xattr_set_nfs4_acl
,
6829 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6830 &nfs4_xattr_nfs4_acl_handler
,