4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/sunrpc/gss_api.h>
47 #include <linux/nfs.h>
48 #include <linux/nfs4.h>
49 #include <linux/nfs_fs.h>
50 #include <linux/nfs_page.h>
51 #include <linux/nfs_mount.h>
52 #include <linux/namei.h>
53 #include <linux/mount.h>
54 #include <linux/module.h>
55 #include <linux/nfs_idmap.h>
56 #include <linux/sunrpc/bc_xprt.h>
57 #include <linux/xattr.h>
58 #include <linux/utsname.h>
59 #include <linux/freezer.h>
62 #include "delegation.h"
68 #define NFSDBG_FACILITY NFSDBG_PROC
70 #define NFS4_POLL_RETRY_MIN (HZ/10)
71 #define NFS4_POLL_RETRY_MAX (15*HZ)
73 #define NFS4_MAX_LOOP_ON_RECOVER (10)
75 static unsigned short max_session_slots
= NFS4_DEF_SLOT_TABLE_SIZE
;
78 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
79 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
80 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
81 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
82 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
83 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
84 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
85 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
86 struct nfs4_state
*state
);
87 #ifdef CONFIG_NFS_V4_1
88 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*);
89 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*);
91 /* Prevent leaks of NFSv4 errors into userland */
92 static int nfs4_map_errors(int err
)
97 case -NFS4ERR_RESOURCE
:
99 case -NFS4ERR_WRONGSEC
:
101 case -NFS4ERR_BADOWNER
:
102 case -NFS4ERR_BADNAME
:
105 dprintk("%s could not handle NFSv4 error %d\n",
113 * This is our standard bitmap for GETATTR requests.
115 const u32 nfs4_fattr_bitmap
[2] = {
117 | FATTR4_WORD0_CHANGE
120 | FATTR4_WORD0_FILEID
,
122 | FATTR4_WORD1_NUMLINKS
124 | FATTR4_WORD1_OWNER_GROUP
125 | FATTR4_WORD1_RAWDEV
126 | FATTR4_WORD1_SPACE_USED
127 | FATTR4_WORD1_TIME_ACCESS
128 | FATTR4_WORD1_TIME_METADATA
129 | FATTR4_WORD1_TIME_MODIFY
132 const u32 nfs4_statfs_bitmap
[2] = {
133 FATTR4_WORD0_FILES_AVAIL
134 | FATTR4_WORD0_FILES_FREE
135 | FATTR4_WORD0_FILES_TOTAL
,
136 FATTR4_WORD1_SPACE_AVAIL
137 | FATTR4_WORD1_SPACE_FREE
138 | FATTR4_WORD1_SPACE_TOTAL
141 const u32 nfs4_pathconf_bitmap
[2] = {
143 | FATTR4_WORD0_MAXNAME
,
147 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
148 | FATTR4_WORD0_MAXREAD
149 | FATTR4_WORD0_MAXWRITE
150 | FATTR4_WORD0_LEASE_TIME
,
151 FATTR4_WORD1_TIME_DELTA
152 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
153 FATTR4_WORD2_LAYOUT_BLKSIZE
156 const u32 nfs4_fs_locations_bitmap
[2] = {
158 | FATTR4_WORD0_CHANGE
161 | FATTR4_WORD0_FILEID
162 | FATTR4_WORD0_FS_LOCATIONS
,
164 | FATTR4_WORD1_NUMLINKS
166 | FATTR4_WORD1_OWNER_GROUP
167 | FATTR4_WORD1_RAWDEV
168 | FATTR4_WORD1_SPACE_USED
169 | FATTR4_WORD1_TIME_ACCESS
170 | FATTR4_WORD1_TIME_METADATA
171 | FATTR4_WORD1_TIME_MODIFY
172 | FATTR4_WORD1_MOUNTED_ON_FILEID
175 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
176 struct nfs4_readdir_arg
*readdir
)
180 BUG_ON(readdir
->count
< 80);
182 readdir
->cookie
= cookie
;
183 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
188 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
193 * NFSv4 servers do not return entries for '.' and '..'
194 * Therefore, we fake these entries here. We let '.'
195 * have cookie 0 and '..' have cookie 1. Note that
196 * when talking to the server, we always send cookie 0
199 start
= p
= kmap_atomic(*readdir
->pages
);
202 *p
++ = xdr_one
; /* next */
203 *p
++ = xdr_zero
; /* cookie, first word */
204 *p
++ = xdr_one
; /* cookie, second word */
205 *p
++ = xdr_one
; /* entry len */
206 memcpy(p
, ".\0\0\0", 4); /* entry */
208 *p
++ = xdr_one
; /* bitmap length */
209 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
210 *p
++ = htonl(8); /* attribute buffer length */
211 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
214 *p
++ = xdr_one
; /* next */
215 *p
++ = xdr_zero
; /* cookie, first word */
216 *p
++ = xdr_two
; /* cookie, second word */
217 *p
++ = xdr_two
; /* entry len */
218 memcpy(p
, "..\0\0", 4); /* entry */
220 *p
++ = xdr_one
; /* bitmap length */
221 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
222 *p
++ = htonl(8); /* attribute buffer length */
223 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
225 readdir
->pgbase
= (char *)p
- (char *)start
;
226 readdir
->count
-= readdir
->pgbase
;
227 kunmap_atomic(start
);
230 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
236 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
237 nfs_wait_bit_killable
, TASK_KILLABLE
);
241 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
248 *timeout
= NFS4_POLL_RETRY_MIN
;
249 if (*timeout
> NFS4_POLL_RETRY_MAX
)
250 *timeout
= NFS4_POLL_RETRY_MAX
;
251 freezable_schedule_timeout_killable(*timeout
);
252 if (fatal_signal_pending(current
))
258 /* This is the error handling routine for processes that are allowed
261 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
263 struct nfs_client
*clp
= server
->nfs_client
;
264 struct nfs4_state
*state
= exception
->state
;
265 struct inode
*inode
= exception
->inode
;
268 exception
->retry
= 0;
272 case -NFS4ERR_OPENMODE
:
273 if (inode
&& nfs_have_delegation(inode
, FMODE_READ
)) {
274 nfs_inode_return_delegation(inode
);
275 exception
->retry
= 1;
280 nfs4_schedule_stateid_recovery(server
, state
);
281 goto wait_on_recovery
;
282 case -NFS4ERR_DELEG_REVOKED
:
283 case -NFS4ERR_ADMIN_REVOKED
:
284 case -NFS4ERR_BAD_STATEID
:
287 nfs_remove_bad_delegation(state
->inode
);
288 nfs4_schedule_stateid_recovery(server
, state
);
289 goto wait_on_recovery
;
290 case -NFS4ERR_EXPIRED
:
292 nfs4_schedule_stateid_recovery(server
, state
);
293 case -NFS4ERR_STALE_STATEID
:
294 case -NFS4ERR_STALE_CLIENTID
:
295 nfs4_schedule_lease_recovery(clp
);
296 goto wait_on_recovery
;
297 #if defined(CONFIG_NFS_V4_1)
298 case -NFS4ERR_BADSESSION
:
299 case -NFS4ERR_BADSLOT
:
300 case -NFS4ERR_BAD_HIGH_SLOT
:
301 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
302 case -NFS4ERR_DEADSESSION
:
303 case -NFS4ERR_SEQ_FALSE_RETRY
:
304 case -NFS4ERR_SEQ_MISORDERED
:
305 dprintk("%s ERROR: %d Reset session\n", __func__
,
307 nfs4_schedule_session_recovery(clp
->cl_session
);
308 exception
->retry
= 1;
310 #endif /* defined(CONFIG_NFS_V4_1) */
311 case -NFS4ERR_FILE_OPEN
:
312 if (exception
->timeout
> HZ
) {
313 /* We have retried a decent amount, time to
322 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
325 case -NFS4ERR_RETRY_UNCACHED_REP
:
326 case -NFS4ERR_OLD_STATEID
:
327 exception
->retry
= 1;
329 case -NFS4ERR_BADOWNER
:
330 /* The following works around a Linux server bug! */
331 case -NFS4ERR_BADNAME
:
332 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
333 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
334 exception
->retry
= 1;
335 printk(KERN_WARNING
"NFS: v4 server %s "
336 "does not accept raw "
338 "Reenabling the idmapper.\n",
339 server
->nfs_client
->cl_hostname
);
342 /* We failed to handle the error */
343 return nfs4_map_errors(ret
);
345 ret
= nfs4_wait_clnt_recover(clp
);
347 exception
->retry
= 1;
352 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
354 spin_lock(&clp
->cl_lock
);
355 if (time_before(clp
->cl_last_renewal
,timestamp
))
356 clp
->cl_last_renewal
= timestamp
;
357 spin_unlock(&clp
->cl_lock
);
360 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
362 do_renew_lease(server
->nfs_client
, timestamp
);
365 #if defined(CONFIG_NFS_V4_1)
368 * nfs4_free_slot - free a slot and efficiently update slot table.
370 * freeing a slot is trivially done by clearing its respective bit
372 * If the freed slotid equals highest_used_slotid we want to update it
373 * so that the server would be able to size down the slot table if needed,
374 * otherwise we know that the highest_used_slotid is still in use.
375 * When updating highest_used_slotid there may be "holes" in the bitmap
376 * so we need to scan down from highest_used_slotid to 0 looking for the now
377 * highest slotid in use.
378 * If none found, highest_used_slotid is set to NFS4_NO_SLOT.
380 * Must be called while holding tbl->slot_tbl_lock
383 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u32 slotid
)
385 BUG_ON(slotid
>= NFS4_MAX_SLOT_TABLE
);
386 /* clear used bit in bitmap */
387 __clear_bit(slotid
, tbl
->used_slots
);
389 /* update highest_used_slotid when it is freed */
390 if (slotid
== tbl
->highest_used_slotid
) {
391 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
392 if (slotid
< tbl
->max_slots
)
393 tbl
->highest_used_slotid
= slotid
;
395 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
397 dprintk("%s: slotid %u highest_used_slotid %d\n", __func__
,
398 slotid
, tbl
->highest_used_slotid
);
401 bool nfs4_set_task_privileged(struct rpc_task
*task
, void *dummy
)
403 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
408 * Signal state manager thread if session fore channel is drained
410 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
412 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
413 rpc_wake_up_first(&ses
->fc_slot_table
.slot_tbl_waitq
,
414 nfs4_set_task_privileged
, NULL
);
418 if (ses
->fc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
421 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
422 complete(&ses
->fc_slot_table
.complete
);
426 * Signal state manager thread if session back channel is drained
428 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
430 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
431 ses
->bc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
433 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
434 complete(&ses
->bc_slot_table
.complete
);
437 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
439 struct nfs4_slot_table
*tbl
;
441 tbl
= &res
->sr_session
->fc_slot_table
;
443 /* just wake up the next guy waiting since
444 * we may have not consumed a slot after all */
445 dprintk("%s: No slot\n", __func__
);
449 spin_lock(&tbl
->slot_tbl_lock
);
450 nfs4_free_slot(tbl
, res
->sr_slot
- tbl
->slots
);
451 nfs4_check_drain_fc_complete(res
->sr_session
);
452 spin_unlock(&tbl
->slot_tbl_lock
);
456 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
458 unsigned long timestamp
;
459 struct nfs_client
*clp
;
462 * sr_status remains 1 if an RPC level error occurred. The server
463 * may or may not have processed the sequence operation..
464 * Proceed as if the server received and processed the sequence
467 if (res
->sr_status
== 1)
468 res
->sr_status
= NFS_OK
;
470 /* don't increment the sequence number if the task wasn't sent */
471 if (!RPC_WAS_SENT(task
))
474 /* Check the SEQUENCE operation status */
475 switch (res
->sr_status
) {
477 /* Update the slot's sequence and clientid lease timer */
478 ++res
->sr_slot
->seq_nr
;
479 timestamp
= res
->sr_renewal_time
;
480 clp
= res
->sr_session
->clp
;
481 do_renew_lease(clp
, timestamp
);
482 /* Check sequence flags */
483 if (res
->sr_status_flags
!= 0)
484 nfs4_schedule_lease_recovery(clp
);
487 /* The server detected a resend of the RPC call and
488 * returned NFS4ERR_DELAY as per Section 2.10.6.2
491 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
493 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
494 res
->sr_slot
->seq_nr
);
497 /* Just update the slot sequence no. */
498 ++res
->sr_slot
->seq_nr
;
501 /* The session may be reset by one of the error handlers. */
502 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
503 nfs41_sequence_free_slot(res
);
506 if (!rpc_restart_call(task
))
508 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
512 static int nfs4_sequence_done(struct rpc_task
*task
,
513 struct nfs4_sequence_res
*res
)
515 if (res
->sr_session
== NULL
)
517 return nfs41_sequence_done(task
, res
);
521 * nfs4_find_slot - efficiently look for a free slot
523 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
524 * If found, we mark the slot as used, update the highest_used_slotid,
525 * and respectively set up the sequence operation args.
526 * The slot number is returned if found, or NFS4_NO_SLOT otherwise.
528 * Note: must be called with under the slot_tbl_lock.
531 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
534 u32 ret_id
= NFS4_NO_SLOT
;
536 dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n",
537 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
539 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
540 if (slotid
>= tbl
->max_slots
)
542 __set_bit(slotid
, tbl
->used_slots
);
543 if (slotid
> tbl
->highest_used_slotid
||
544 tbl
->highest_used_slotid
== NFS4_NO_SLOT
)
545 tbl
->highest_used_slotid
= slotid
;
548 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
549 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
553 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
554 struct nfs4_sequence_res
*res
, int cache_reply
)
556 args
->sa_session
= NULL
;
557 args
->sa_cache_this
= 0;
559 args
->sa_cache_this
= 1;
560 res
->sr_session
= NULL
;
564 int nfs41_setup_sequence(struct nfs4_session
*session
,
565 struct nfs4_sequence_args
*args
,
566 struct nfs4_sequence_res
*res
,
567 struct rpc_task
*task
)
569 struct nfs4_slot
*slot
;
570 struct nfs4_slot_table
*tbl
;
573 dprintk("--> %s\n", __func__
);
574 /* slot already allocated? */
575 if (res
->sr_slot
!= NULL
)
578 tbl
= &session
->fc_slot_table
;
580 spin_lock(&tbl
->slot_tbl_lock
);
581 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
582 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
583 /* The state manager will wait until the slot table is empty */
584 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
585 spin_unlock(&tbl
->slot_tbl_lock
);
586 dprintk("%s session is draining\n", __func__
);
590 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
591 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
592 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
593 spin_unlock(&tbl
->slot_tbl_lock
);
594 dprintk("%s enforce FIFO order\n", __func__
);
598 slotid
= nfs4_find_slot(tbl
);
599 if (slotid
== NFS4_NO_SLOT
) {
600 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
601 spin_unlock(&tbl
->slot_tbl_lock
);
602 dprintk("<-- %s: no free slots\n", __func__
);
605 spin_unlock(&tbl
->slot_tbl_lock
);
607 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
608 slot
= tbl
->slots
+ slotid
;
609 args
->sa_session
= session
;
610 args
->sa_slotid
= slotid
;
612 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
614 res
->sr_session
= session
;
616 res
->sr_renewal_time
= jiffies
;
617 res
->sr_status_flags
= 0;
619 * sr_status is only set in decode_sequence, and so will remain
620 * set to 1 if an rpc level failure occurs.
625 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
627 int nfs4_setup_sequence(const struct nfs_server
*server
,
628 struct nfs4_sequence_args
*args
,
629 struct nfs4_sequence_res
*res
,
630 struct rpc_task
*task
)
632 struct nfs4_session
*session
= nfs4_get_session(server
);
638 dprintk("--> %s clp %p session %p sr_slot %td\n",
639 __func__
, session
->clp
, session
, res
->sr_slot
?
640 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
642 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
644 dprintk("<-- %s status=%d\n", __func__
, ret
);
648 struct nfs41_call_sync_data
{
649 const struct nfs_server
*seq_server
;
650 struct nfs4_sequence_args
*seq_args
;
651 struct nfs4_sequence_res
*seq_res
;
654 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
656 struct nfs41_call_sync_data
*data
= calldata
;
658 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
660 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
661 data
->seq_res
, task
))
663 rpc_call_start(task
);
666 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
668 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
669 nfs41_call_sync_prepare(task
, calldata
);
672 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
674 struct nfs41_call_sync_data
*data
= calldata
;
676 nfs41_sequence_done(task
, data
->seq_res
);
679 static const struct rpc_call_ops nfs41_call_sync_ops
= {
680 .rpc_call_prepare
= nfs41_call_sync_prepare
,
681 .rpc_call_done
= nfs41_call_sync_done
,
684 static const struct rpc_call_ops nfs41_call_priv_sync_ops
= {
685 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
686 .rpc_call_done
= nfs41_call_sync_done
,
689 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
690 struct nfs_server
*server
,
691 struct rpc_message
*msg
,
692 struct nfs4_sequence_args
*args
,
693 struct nfs4_sequence_res
*res
,
697 struct rpc_task
*task
;
698 struct nfs41_call_sync_data data
= {
699 .seq_server
= server
,
703 struct rpc_task_setup task_setup
= {
706 .callback_ops
= &nfs41_call_sync_ops
,
707 .callback_data
= &data
711 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
712 task
= rpc_run_task(&task_setup
);
716 ret
= task
->tk_status
;
722 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
723 struct nfs_server
*server
,
724 struct rpc_message
*msg
,
725 struct nfs4_sequence_args
*args
,
726 struct nfs4_sequence_res
*res
,
729 nfs41_init_sequence(args
, res
, cache_reply
);
730 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, 0);
735 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
736 struct nfs4_sequence_res
*res
, int cache_reply
)
740 static int nfs4_sequence_done(struct rpc_task
*task
,
741 struct nfs4_sequence_res
*res
)
745 #endif /* CONFIG_NFS_V4_1 */
747 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
748 struct nfs_server
*server
,
749 struct rpc_message
*msg
,
750 struct nfs4_sequence_args
*args
,
751 struct nfs4_sequence_res
*res
,
754 nfs41_init_sequence(args
, res
, cache_reply
);
755 return rpc_call_sync(clnt
, msg
, 0);
759 int nfs4_call_sync(struct rpc_clnt
*clnt
,
760 struct nfs_server
*server
,
761 struct rpc_message
*msg
,
762 struct nfs4_sequence_args
*args
,
763 struct nfs4_sequence_res
*res
,
766 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
767 args
, res
, cache_reply
);
770 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
772 struct nfs_inode
*nfsi
= NFS_I(dir
);
774 spin_lock(&dir
->i_lock
);
775 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
776 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
777 nfs_force_lookup_revalidate(dir
);
778 dir
->i_version
= cinfo
->after
;
779 spin_unlock(&dir
->i_lock
);
782 struct nfs4_opendata
{
784 struct nfs_openargs o_arg
;
785 struct nfs_openres o_res
;
786 struct nfs_open_confirmargs c_arg
;
787 struct nfs_open_confirmres c_res
;
788 struct nfs4_string owner_name
;
789 struct nfs4_string group_name
;
790 struct nfs_fattr f_attr
;
791 struct nfs_fattr dir_attr
;
793 struct dentry
*dentry
;
794 struct nfs4_state_owner
*owner
;
795 struct nfs4_state
*state
;
797 unsigned long timestamp
;
798 unsigned int rpc_done
: 1;
804 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
806 p
->o_res
.f_attr
= &p
->f_attr
;
807 p
->o_res
.dir_attr
= &p
->dir_attr
;
808 p
->o_res
.seqid
= p
->o_arg
.seqid
;
809 p
->c_res
.seqid
= p
->c_arg
.seqid
;
810 p
->o_res
.server
= p
->o_arg
.server
;
811 nfs_fattr_init(&p
->f_attr
);
812 nfs_fattr_init(&p
->dir_attr
);
813 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
816 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
817 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
818 const struct iattr
*attrs
,
821 struct dentry
*parent
= dget_parent(dentry
);
822 struct inode
*dir
= parent
->d_inode
;
823 struct nfs_server
*server
= NFS_SERVER(dir
);
824 struct nfs4_opendata
*p
;
826 p
= kzalloc(sizeof(*p
), gfp_mask
);
829 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
830 if (p
->o_arg
.seqid
== NULL
)
832 nfs_sb_active(dentry
->d_sb
);
833 p
->dentry
= dget(dentry
);
836 atomic_inc(&sp
->so_count
);
837 p
->o_arg
.fh
= NFS_FH(dir
);
838 p
->o_arg
.open_flags
= flags
;
839 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
840 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
841 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
842 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
843 p
->o_arg
.name
= &dentry
->d_name
;
844 p
->o_arg
.server
= server
;
845 p
->o_arg
.bitmask
= server
->attr_bitmask
;
846 p
->o_arg
.dir_bitmask
= server
->cache_consistency_bitmask
;
847 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
848 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
851 p
->o_arg
.u
.attrs
= &p
->attrs
;
852 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
855 verf
[1] = current
->pid
;
856 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
857 sizeof(p
->o_arg
.u
.verifier
.data
));
859 p
->c_arg
.fh
= &p
->o_res
.fh
;
860 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
861 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
862 nfs4_init_opendata_res(p
);
872 static void nfs4_opendata_free(struct kref
*kref
)
874 struct nfs4_opendata
*p
= container_of(kref
,
875 struct nfs4_opendata
, kref
);
876 struct super_block
*sb
= p
->dentry
->d_sb
;
878 nfs_free_seqid(p
->o_arg
.seqid
);
879 if (p
->state
!= NULL
)
880 nfs4_put_open_state(p
->state
);
881 nfs4_put_state_owner(p
->owner
);
885 nfs_fattr_free_names(&p
->f_attr
);
889 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
892 kref_put(&p
->kref
, nfs4_opendata_free
);
895 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
899 ret
= rpc_wait_for_completion_task(task
);
903 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
907 if (open_mode
& (O_EXCL
|O_TRUNC
))
909 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
911 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
912 && state
->n_rdonly
!= 0;
915 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
916 && state
->n_wronly
!= 0;
918 case FMODE_READ
|FMODE_WRITE
:
919 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
920 && state
->n_rdwr
!= 0;
926 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
928 if (delegation
== NULL
)
930 if ((delegation
->type
& fmode
) != fmode
)
932 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
934 nfs_mark_delegation_referenced(delegation
);
938 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
947 case FMODE_READ
|FMODE_WRITE
:
950 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
953 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
955 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
956 nfs4_stateid_copy(&state
->stateid
, stateid
);
957 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
960 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
963 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
965 case FMODE_READ
|FMODE_WRITE
:
966 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
970 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
972 write_seqlock(&state
->seqlock
);
973 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
974 write_sequnlock(&state
->seqlock
);
977 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
980 * Protect the call to nfs4_state_set_mode_locked and
981 * serialise the stateid update
983 write_seqlock(&state
->seqlock
);
984 if (deleg_stateid
!= NULL
) {
985 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
986 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
988 if (open_stateid
!= NULL
)
989 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
990 write_sequnlock(&state
->seqlock
);
991 spin_lock(&state
->owner
->so_lock
);
992 update_open_stateflags(state
, fmode
);
993 spin_unlock(&state
->owner
->so_lock
);
996 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
998 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
999 struct nfs_delegation
*deleg_cur
;
1002 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1005 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1006 if (deleg_cur
== NULL
)
1009 spin_lock(&deleg_cur
->lock
);
1010 if (nfsi
->delegation
!= deleg_cur
||
1011 (deleg_cur
->type
& fmode
) != fmode
)
1012 goto no_delegation_unlock
;
1014 if (delegation
== NULL
)
1015 delegation
= &deleg_cur
->stateid
;
1016 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1017 goto no_delegation_unlock
;
1019 nfs_mark_delegation_referenced(deleg_cur
);
1020 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1022 no_delegation_unlock
:
1023 spin_unlock(&deleg_cur
->lock
);
1027 if (!ret
&& open_stateid
!= NULL
) {
1028 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1036 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1038 struct nfs_delegation
*delegation
;
1041 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1042 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1047 nfs_inode_return_delegation(inode
);
1050 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1052 struct nfs4_state
*state
= opendata
->state
;
1053 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1054 struct nfs_delegation
*delegation
;
1055 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1056 fmode_t fmode
= opendata
->o_arg
.fmode
;
1057 nfs4_stateid stateid
;
1061 if (can_open_cached(state
, fmode
, open_mode
)) {
1062 spin_lock(&state
->owner
->so_lock
);
1063 if (can_open_cached(state
, fmode
, open_mode
)) {
1064 update_open_stateflags(state
, fmode
);
1065 spin_unlock(&state
->owner
->so_lock
);
1066 goto out_return_state
;
1068 spin_unlock(&state
->owner
->so_lock
);
1071 delegation
= rcu_dereference(nfsi
->delegation
);
1072 if (!can_open_delegated(delegation
, fmode
)) {
1076 /* Save the delegation */
1077 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1079 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1084 /* Try to update the stateid using the delegation */
1085 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1086 goto out_return_state
;
1089 return ERR_PTR(ret
);
1091 atomic_inc(&state
->count
);
1095 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1097 struct inode
*inode
;
1098 struct nfs4_state
*state
= NULL
;
1099 struct nfs_delegation
*delegation
;
1102 if (!data
->rpc_done
) {
1103 state
= nfs4_try_open_cached(data
);
1108 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1110 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1111 ret
= PTR_ERR(inode
);
1115 state
= nfs4_get_open_state(inode
, data
->owner
);
1118 if (data
->o_res
.delegation_type
!= 0) {
1119 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
1120 int delegation_flags
= 0;
1123 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1125 delegation_flags
= delegation
->flags
;
1127 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1128 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1129 "returning a delegation for "
1130 "OPEN(CLAIM_DELEGATE_CUR)\n",
1132 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1133 nfs_inode_set_delegation(state
->inode
,
1134 data
->owner
->so_cred
,
1137 nfs_inode_reclaim_delegation(state
->inode
,
1138 data
->owner
->so_cred
,
1142 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1150 return ERR_PTR(ret
);
1153 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1155 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1156 struct nfs_open_context
*ctx
;
1158 spin_lock(&state
->inode
->i_lock
);
1159 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1160 if (ctx
->state
!= state
)
1162 get_nfs_open_context(ctx
);
1163 spin_unlock(&state
->inode
->i_lock
);
1166 spin_unlock(&state
->inode
->i_lock
);
1167 return ERR_PTR(-ENOENT
);
1170 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1172 struct nfs4_opendata
*opendata
;
1174 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1175 if (opendata
== NULL
)
1176 return ERR_PTR(-ENOMEM
);
1177 opendata
->state
= state
;
1178 atomic_inc(&state
->count
);
1182 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1184 struct nfs4_state
*newstate
;
1187 opendata
->o_arg
.open_flags
= 0;
1188 opendata
->o_arg
.fmode
= fmode
;
1189 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1190 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1191 nfs4_init_opendata_res(opendata
);
1192 ret
= _nfs4_recover_proc_open(opendata
);
1195 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1196 if (IS_ERR(newstate
))
1197 return PTR_ERR(newstate
);
1198 nfs4_close_state(newstate
, fmode
);
1203 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1205 struct nfs4_state
*newstate
;
1208 /* memory barrier prior to reading state->n_* */
1209 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1211 if (state
->n_rdwr
!= 0) {
1212 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1213 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1216 if (newstate
!= state
)
1219 if (state
->n_wronly
!= 0) {
1220 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1221 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1224 if (newstate
!= state
)
1227 if (state
->n_rdonly
!= 0) {
1228 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1229 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1232 if (newstate
!= state
)
1236 * We may have performed cached opens for all three recoveries.
1237 * Check if we need to update the current stateid.
1239 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1240 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1241 write_seqlock(&state
->seqlock
);
1242 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1243 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1244 write_sequnlock(&state
->seqlock
);
1251 * reclaim state on the server after a reboot.
1253 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1255 struct nfs_delegation
*delegation
;
1256 struct nfs4_opendata
*opendata
;
1257 fmode_t delegation_type
= 0;
1260 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1261 if (IS_ERR(opendata
))
1262 return PTR_ERR(opendata
);
1263 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1264 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1266 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1267 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1268 delegation_type
= delegation
->type
;
1270 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1271 status
= nfs4_open_recover(opendata
, state
);
1272 nfs4_opendata_put(opendata
);
1276 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1278 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1279 struct nfs4_exception exception
= { };
1282 err
= _nfs4_do_open_reclaim(ctx
, state
);
1283 if (err
!= -NFS4ERR_DELAY
)
1285 nfs4_handle_exception(server
, err
, &exception
);
1286 } while (exception
.retry
);
1290 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1292 struct nfs_open_context
*ctx
;
1295 ctx
= nfs4_state_find_open_context(state
);
1297 return PTR_ERR(ctx
);
1298 ret
= nfs4_do_open_reclaim(ctx
, state
);
1299 put_nfs_open_context(ctx
);
1303 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1305 struct nfs4_opendata
*opendata
;
1308 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1309 if (IS_ERR(opendata
))
1310 return PTR_ERR(opendata
);
1311 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1312 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1313 ret
= nfs4_open_recover(opendata
, state
);
1314 nfs4_opendata_put(opendata
);
1318 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1320 struct nfs4_exception exception
= { };
1321 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1324 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1330 case -NFS4ERR_BADSESSION
:
1331 case -NFS4ERR_BADSLOT
:
1332 case -NFS4ERR_BAD_HIGH_SLOT
:
1333 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1334 case -NFS4ERR_DEADSESSION
:
1335 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
1337 case -NFS4ERR_STALE_CLIENTID
:
1338 case -NFS4ERR_STALE_STATEID
:
1339 case -NFS4ERR_EXPIRED
:
1340 /* Don't recall a delegation if it was lost */
1341 nfs4_schedule_lease_recovery(server
->nfs_client
);
1345 * The show must go on: exit, but mark the
1346 * stateid as needing recovery.
1348 case -NFS4ERR_DELEG_REVOKED
:
1349 case -NFS4ERR_ADMIN_REVOKED
:
1350 case -NFS4ERR_BAD_STATEID
:
1351 nfs_inode_find_state_and_recover(state
->inode
,
1353 nfs4_schedule_stateid_recovery(server
, state
);
1356 * User RPCSEC_GSS context has expired.
1357 * We cannot recover this stateid now, so
1358 * skip it and allow recovery thread to
1365 err
= nfs4_handle_exception(server
, err
, &exception
);
1366 } while (exception
.retry
);
1371 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1373 struct nfs4_opendata
*data
= calldata
;
1375 data
->rpc_status
= task
->tk_status
;
1376 if (data
->rpc_status
== 0) {
1377 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1378 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1379 renew_lease(data
->o_res
.server
, data
->timestamp
);
1384 static void nfs4_open_confirm_release(void *calldata
)
1386 struct nfs4_opendata
*data
= calldata
;
1387 struct nfs4_state
*state
= NULL
;
1389 /* If this request hasn't been cancelled, do nothing */
1390 if (data
->cancelled
== 0)
1392 /* In case of error, no cleanup! */
1393 if (!data
->rpc_done
)
1395 state
= nfs4_opendata_to_nfs4_state(data
);
1397 nfs4_close_state(state
, data
->o_arg
.fmode
);
1399 nfs4_opendata_put(data
);
1402 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1403 .rpc_call_done
= nfs4_open_confirm_done
,
1404 .rpc_release
= nfs4_open_confirm_release
,
1408 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1410 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1412 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1413 struct rpc_task
*task
;
1414 struct rpc_message msg
= {
1415 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1416 .rpc_argp
= &data
->c_arg
,
1417 .rpc_resp
= &data
->c_res
,
1418 .rpc_cred
= data
->owner
->so_cred
,
1420 struct rpc_task_setup task_setup_data
= {
1421 .rpc_client
= server
->client
,
1422 .rpc_message
= &msg
,
1423 .callback_ops
= &nfs4_open_confirm_ops
,
1424 .callback_data
= data
,
1425 .workqueue
= nfsiod_workqueue
,
1426 .flags
= RPC_TASK_ASYNC
,
1430 kref_get(&data
->kref
);
1432 data
->rpc_status
= 0;
1433 data
->timestamp
= jiffies
;
1434 task
= rpc_run_task(&task_setup_data
);
1436 return PTR_ERR(task
);
1437 status
= nfs4_wait_for_completion_rpc_task(task
);
1439 data
->cancelled
= 1;
1442 status
= data
->rpc_status
;
1447 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1449 struct nfs4_opendata
*data
= calldata
;
1450 struct nfs4_state_owner
*sp
= data
->owner
;
1452 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1455 * Check if we still need to send an OPEN call, or if we can use
1456 * a delegation instead.
1458 if (data
->state
!= NULL
) {
1459 struct nfs_delegation
*delegation
;
1461 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1464 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1465 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1466 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1467 goto unlock_no_action
;
1470 /* Update client id. */
1471 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1472 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1473 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1474 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1476 data
->timestamp
= jiffies
;
1477 if (nfs4_setup_sequence(data
->o_arg
.server
,
1478 &data
->o_arg
.seq_args
,
1479 &data
->o_res
.seq_res
, task
))
1481 rpc_call_start(task
);
1486 task
->tk_action
= NULL
;
1490 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1492 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1493 nfs4_open_prepare(task
, calldata
);
1496 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1498 struct nfs4_opendata
*data
= calldata
;
1500 data
->rpc_status
= task
->tk_status
;
1502 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1505 if (task
->tk_status
== 0) {
1506 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1510 data
->rpc_status
= -ELOOP
;
1513 data
->rpc_status
= -EISDIR
;
1516 data
->rpc_status
= -ENOTDIR
;
1518 renew_lease(data
->o_res
.server
, data
->timestamp
);
1519 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1520 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1525 static void nfs4_open_release(void *calldata
)
1527 struct nfs4_opendata
*data
= calldata
;
1528 struct nfs4_state
*state
= NULL
;
1530 /* If this request hasn't been cancelled, do nothing */
1531 if (data
->cancelled
== 0)
1533 /* In case of error, no cleanup! */
1534 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1536 /* In case we need an open_confirm, no cleanup! */
1537 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1539 state
= nfs4_opendata_to_nfs4_state(data
);
1541 nfs4_close_state(state
, data
->o_arg
.fmode
);
1543 nfs4_opendata_put(data
);
1546 static const struct rpc_call_ops nfs4_open_ops
= {
1547 .rpc_call_prepare
= nfs4_open_prepare
,
1548 .rpc_call_done
= nfs4_open_done
,
1549 .rpc_release
= nfs4_open_release
,
1552 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1553 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1554 .rpc_call_done
= nfs4_open_done
,
1555 .rpc_release
= nfs4_open_release
,
1558 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1560 struct inode
*dir
= data
->dir
->d_inode
;
1561 struct nfs_server
*server
= NFS_SERVER(dir
);
1562 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1563 struct nfs_openres
*o_res
= &data
->o_res
;
1564 struct rpc_task
*task
;
1565 struct rpc_message msg
= {
1566 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1569 .rpc_cred
= data
->owner
->so_cred
,
1571 struct rpc_task_setup task_setup_data
= {
1572 .rpc_client
= server
->client
,
1573 .rpc_message
= &msg
,
1574 .callback_ops
= &nfs4_open_ops
,
1575 .callback_data
= data
,
1576 .workqueue
= nfsiod_workqueue
,
1577 .flags
= RPC_TASK_ASYNC
,
1581 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1582 kref_get(&data
->kref
);
1584 data
->rpc_status
= 0;
1585 data
->cancelled
= 0;
1587 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1588 task
= rpc_run_task(&task_setup_data
);
1590 return PTR_ERR(task
);
1591 status
= nfs4_wait_for_completion_rpc_task(task
);
1593 data
->cancelled
= 1;
1596 status
= data
->rpc_status
;
1602 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1604 struct inode
*dir
= data
->dir
->d_inode
;
1605 struct nfs_openres
*o_res
= &data
->o_res
;
1608 status
= nfs4_run_open_task(data
, 1);
1609 if (status
!= 0 || !data
->rpc_done
)
1612 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1614 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1616 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1617 status
= _nfs4_proc_open_confirm(data
);
1626 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1628 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1630 struct inode
*dir
= data
->dir
->d_inode
;
1631 struct nfs_server
*server
= NFS_SERVER(dir
);
1632 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1633 struct nfs_openres
*o_res
= &data
->o_res
;
1636 status
= nfs4_run_open_task(data
, 0);
1637 if (!data
->rpc_done
)
1640 if (status
== -NFS4ERR_BADNAME
&&
1641 !(o_arg
->open_flags
& O_CREAT
))
1646 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1648 if (o_arg
->open_flags
& O_CREAT
) {
1649 update_changeattr(dir
, &o_res
->cinfo
);
1650 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1652 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1653 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1654 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1655 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1656 status
= _nfs4_proc_open_confirm(data
);
1660 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1661 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1665 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1670 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1671 ret
= nfs4_wait_clnt_recover(clp
);
1674 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1675 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1677 nfs4_schedule_state_manager(clp
);
1683 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1685 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1690 * reclaim state on the server after a network partition.
1691 * Assumes caller holds the appropriate lock
1693 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1695 struct nfs4_opendata
*opendata
;
1698 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1699 if (IS_ERR(opendata
))
1700 return PTR_ERR(opendata
);
1701 ret
= nfs4_open_recover(opendata
, state
);
1703 d_drop(ctx
->dentry
);
1704 nfs4_opendata_put(opendata
);
1708 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1710 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1711 struct nfs4_exception exception
= { };
1715 err
= _nfs4_open_expired(ctx
, state
);
1719 case -NFS4ERR_GRACE
:
1720 case -NFS4ERR_DELAY
:
1721 nfs4_handle_exception(server
, err
, &exception
);
1724 } while (exception
.retry
);
1729 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1731 struct nfs_open_context
*ctx
;
1734 ctx
= nfs4_state_find_open_context(state
);
1736 return PTR_ERR(ctx
);
1737 ret
= nfs4_do_open_expired(ctx
, state
);
1738 put_nfs_open_context(ctx
);
1742 #if defined(CONFIG_NFS_V4_1)
1743 static int nfs41_check_expired_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, unsigned int flags
)
1745 int status
= NFS_OK
;
1746 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1748 if (state
->flags
& flags
) {
1749 status
= nfs41_test_stateid(server
, stateid
);
1750 if (status
!= NFS_OK
) {
1751 nfs41_free_stateid(server
, stateid
);
1752 state
->flags
&= ~flags
;
1758 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1760 int deleg_status
, open_status
;
1761 int deleg_flags
= 1 << NFS_DELEGATED_STATE
;
1762 int open_flags
= (1 << NFS_O_RDONLY_STATE
) | (1 << NFS_O_WRONLY_STATE
) | (1 << NFS_O_RDWR_STATE
);
1764 deleg_status
= nfs41_check_expired_stateid(state
, &state
->stateid
, deleg_flags
);
1765 open_status
= nfs41_check_expired_stateid(state
, &state
->open_stateid
, open_flags
);
1767 if ((deleg_status
== NFS_OK
) && (open_status
== NFS_OK
))
1769 return nfs4_open_expired(sp
, state
);
1774 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1775 * fields corresponding to attributes that were used to store the verifier.
1776 * Make sure we clobber those fields in the later setattr call
1778 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1780 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1781 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1782 sattr
->ia_valid
|= ATTR_ATIME
;
1784 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1785 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1786 sattr
->ia_valid
|= ATTR_MTIME
;
1790 * Returns a referenced nfs4_state
1792 static int _nfs4_do_open(struct inode
*dir
, struct dentry
*dentry
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
1794 struct nfs4_state_owner
*sp
;
1795 struct nfs4_state
*state
= NULL
;
1796 struct nfs_server
*server
= NFS_SERVER(dir
);
1797 struct nfs4_opendata
*opendata
;
1800 /* Protect against reboot recovery conflicts */
1802 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1804 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1807 status
= nfs4_recover_expired_lease(server
);
1809 goto err_put_state_owner
;
1810 if (dentry
->d_inode
!= NULL
)
1811 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1813 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1814 if (opendata
== NULL
)
1815 goto err_put_state_owner
;
1817 if (dentry
->d_inode
!= NULL
)
1818 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1820 status
= _nfs4_proc_open(opendata
);
1822 goto err_opendata_put
;
1824 state
= nfs4_opendata_to_nfs4_state(opendata
);
1825 status
= PTR_ERR(state
);
1827 goto err_opendata_put
;
1828 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1829 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1831 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1832 nfs4_exclusive_attrset(opendata
, sattr
);
1834 nfs_fattr_init(opendata
->o_res
.f_attr
);
1835 status
= nfs4_do_setattr(state
->inode
, cred
,
1836 opendata
->o_res
.f_attr
, sattr
,
1839 nfs_setattr_update_inode(state
->inode
, sattr
);
1840 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1842 nfs4_opendata_put(opendata
);
1843 nfs4_put_state_owner(sp
);
1847 nfs4_opendata_put(opendata
);
1848 err_put_state_owner
:
1849 nfs4_put_state_owner(sp
);
1856 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct dentry
*dentry
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1858 struct nfs4_exception exception
= { };
1859 struct nfs4_state
*res
;
1863 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
, &res
);
1866 /* NOTE: BAD_SEQID means the server and client disagree about the
1867 * book-keeping w.r.t. state-changing operations
1868 * (OPEN/CLOSE/LOCK/LOCKU...)
1869 * It is actually a sign of a bug on the client or on the server.
1871 * If we receive a BAD_SEQID error in the particular case of
1872 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1873 * have unhashed the old state_owner for us, and that we can
1874 * therefore safely retry using a new one. We should still warn
1875 * the user though...
1877 if (status
== -NFS4ERR_BAD_SEQID
) {
1878 pr_warn_ratelimited("NFS: v4 server %s "
1879 " returned a bad sequence-id error!\n",
1880 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1881 exception
.retry
= 1;
1885 * BAD_STATEID on OPEN means that the server cancelled our
1886 * state before it received the OPEN_CONFIRM.
1887 * Recover by retrying the request as per the discussion
1888 * on Page 181 of RFC3530.
1890 if (status
== -NFS4ERR_BAD_STATEID
) {
1891 exception
.retry
= 1;
1894 if (status
== -EAGAIN
) {
1895 /* We must have found a delegation */
1896 exception
.retry
= 1;
1899 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1900 status
, &exception
));
1901 } while (exception
.retry
);
1905 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1906 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1907 struct nfs4_state
*state
)
1909 struct nfs_server
*server
= NFS_SERVER(inode
);
1910 struct nfs_setattrargs arg
= {
1911 .fh
= NFS_FH(inode
),
1914 .bitmask
= server
->attr_bitmask
,
1916 struct nfs_setattrres res
= {
1920 struct rpc_message msg
= {
1921 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1926 unsigned long timestamp
= jiffies
;
1929 nfs_fattr_init(fattr
);
1931 if (state
!= NULL
) {
1932 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
1933 current
->files
, current
->tgid
);
1934 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
1936 /* Use that stateid */
1938 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
1940 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
1941 if (status
== 0 && state
!= NULL
)
1942 renew_lease(server
, timestamp
);
1946 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1947 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1948 struct nfs4_state
*state
)
1950 struct nfs_server
*server
= NFS_SERVER(inode
);
1951 struct nfs4_exception exception
= {
1957 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
1959 case -NFS4ERR_OPENMODE
:
1960 if (state
&& !(state
->state
& FMODE_WRITE
)) {
1962 if (sattr
->ia_valid
& ATTR_OPEN
)
1967 err
= nfs4_handle_exception(server
, err
, &exception
);
1968 } while (exception
.retry
);
1973 struct nfs4_closedata
{
1974 struct inode
*inode
;
1975 struct nfs4_state
*state
;
1976 struct nfs_closeargs arg
;
1977 struct nfs_closeres res
;
1978 struct nfs_fattr fattr
;
1979 unsigned long timestamp
;
1984 static void nfs4_free_closedata(void *data
)
1986 struct nfs4_closedata
*calldata
= data
;
1987 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1988 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
1991 pnfs_roc_release(calldata
->state
->inode
);
1992 nfs4_put_open_state(calldata
->state
);
1993 nfs_free_seqid(calldata
->arg
.seqid
);
1994 nfs4_put_state_owner(sp
);
1995 nfs_sb_deactive(sb
);
1999 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2002 spin_lock(&state
->owner
->so_lock
);
2003 if (!(fmode
& FMODE_READ
))
2004 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2005 if (!(fmode
& FMODE_WRITE
))
2006 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2007 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2008 spin_unlock(&state
->owner
->so_lock
);
2011 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2013 struct nfs4_closedata
*calldata
= data
;
2014 struct nfs4_state
*state
= calldata
->state
;
2015 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2017 dprintk("%s: begin!\n", __func__
);
2018 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2020 /* hmm. we are done with the inode, and in the process of freeing
2021 * the state_owner. we keep this around to process errors
2023 switch (task
->tk_status
) {
2026 pnfs_roc_set_barrier(state
->inode
,
2027 calldata
->roc_barrier
);
2028 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2029 renew_lease(server
, calldata
->timestamp
);
2030 nfs4_close_clear_stateid_flags(state
,
2031 calldata
->arg
.fmode
);
2033 case -NFS4ERR_STALE_STATEID
:
2034 case -NFS4ERR_OLD_STATEID
:
2035 case -NFS4ERR_BAD_STATEID
:
2036 case -NFS4ERR_EXPIRED
:
2037 if (calldata
->arg
.fmode
== 0)
2040 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2041 rpc_restart_call_prepare(task
);
2043 nfs_release_seqid(calldata
->arg
.seqid
);
2044 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2045 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2048 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2050 struct nfs4_closedata
*calldata
= data
;
2051 struct nfs4_state
*state
= calldata
->state
;
2054 dprintk("%s: begin!\n", __func__
);
2055 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2058 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2059 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2060 spin_lock(&state
->owner
->so_lock
);
2061 /* Calculate the change in open mode */
2062 if (state
->n_rdwr
== 0) {
2063 if (state
->n_rdonly
== 0) {
2064 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2065 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2066 calldata
->arg
.fmode
&= ~FMODE_READ
;
2068 if (state
->n_wronly
== 0) {
2069 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2070 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2071 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2074 spin_unlock(&state
->owner
->so_lock
);
2077 /* Note: exit _without_ calling nfs4_close_done */
2078 task
->tk_action
= NULL
;
2082 if (calldata
->arg
.fmode
== 0) {
2083 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2084 if (calldata
->roc
&&
2085 pnfs_roc_drain(calldata
->inode
, &calldata
->roc_barrier
)) {
2086 rpc_sleep_on(&NFS_SERVER(calldata
->inode
)->roc_rpcwaitq
,
2092 nfs_fattr_init(calldata
->res
.fattr
);
2093 calldata
->timestamp
= jiffies
;
2094 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
2095 &calldata
->arg
.seq_args
,
2096 &calldata
->res
.seq_res
,
2099 rpc_call_start(task
);
2101 dprintk("%s: done!\n", __func__
);
2104 static const struct rpc_call_ops nfs4_close_ops
= {
2105 .rpc_call_prepare
= nfs4_close_prepare
,
2106 .rpc_call_done
= nfs4_close_done
,
2107 .rpc_release
= nfs4_free_closedata
,
2111 * It is possible for data to be read/written from a mem-mapped file
2112 * after the sys_close call (which hits the vfs layer as a flush).
2113 * This means that we can't safely call nfsv4 close on a file until
2114 * the inode is cleared. This in turn means that we are not good
2115 * NFSv4 citizens - we do not indicate to the server to update the file's
2116 * share state even when we are done with one of the three share
2117 * stateid's in the inode.
2119 * NOTE: Caller must be holding the sp->so_owner semaphore!
2121 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
, bool roc
)
2123 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2124 struct nfs4_closedata
*calldata
;
2125 struct nfs4_state_owner
*sp
= state
->owner
;
2126 struct rpc_task
*task
;
2127 struct rpc_message msg
= {
2128 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2129 .rpc_cred
= state
->owner
->so_cred
,
2131 struct rpc_task_setup task_setup_data
= {
2132 .rpc_client
= server
->client
,
2133 .rpc_message
= &msg
,
2134 .callback_ops
= &nfs4_close_ops
,
2135 .workqueue
= nfsiod_workqueue
,
2136 .flags
= RPC_TASK_ASYNC
,
2138 int status
= -ENOMEM
;
2140 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2141 if (calldata
== NULL
)
2143 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2144 calldata
->inode
= state
->inode
;
2145 calldata
->state
= state
;
2146 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2147 calldata
->arg
.stateid
= &state
->open_stateid
;
2148 /* Serialization for the sequence id */
2149 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2150 if (calldata
->arg
.seqid
== NULL
)
2151 goto out_free_calldata
;
2152 calldata
->arg
.fmode
= 0;
2153 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2154 calldata
->res
.fattr
= &calldata
->fattr
;
2155 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2156 calldata
->res
.server
= server
;
2157 calldata
->roc
= roc
;
2158 nfs_sb_active(calldata
->inode
->i_sb
);
2160 msg
.rpc_argp
= &calldata
->arg
;
2161 msg
.rpc_resp
= &calldata
->res
;
2162 task_setup_data
.callback_data
= calldata
;
2163 task
= rpc_run_task(&task_setup_data
);
2165 return PTR_ERR(task
);
2168 status
= rpc_wait_for_completion_task(task
);
2175 pnfs_roc_release(state
->inode
);
2176 nfs4_put_open_state(state
);
2177 nfs4_put_state_owner(sp
);
2181 static struct inode
*
2182 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2184 struct nfs4_state
*state
;
2186 /* Protect against concurrent sillydeletes */
2187 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
, ctx
->cred
);
2189 return ERR_CAST(state
);
2191 return igrab(state
->inode
);
2194 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2196 if (ctx
->state
== NULL
)
2199 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2201 nfs4_close_state(ctx
->state
, ctx
->mode
);
2204 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2206 struct nfs4_server_caps_arg args
= {
2209 struct nfs4_server_caps_res res
= {};
2210 struct rpc_message msg
= {
2211 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2217 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2219 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2220 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2221 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2222 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2223 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2224 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2225 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2226 server
->caps
|= NFS_CAP_ACLS
;
2227 if (res
.has_links
!= 0)
2228 server
->caps
|= NFS_CAP_HARDLINKS
;
2229 if (res
.has_symlinks
!= 0)
2230 server
->caps
|= NFS_CAP_SYMLINKS
;
2231 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2232 server
->caps
|= NFS_CAP_FILEID
;
2233 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2234 server
->caps
|= NFS_CAP_MODE
;
2235 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2236 server
->caps
|= NFS_CAP_NLINK
;
2237 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2238 server
->caps
|= NFS_CAP_OWNER
;
2239 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2240 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2241 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2242 server
->caps
|= NFS_CAP_ATIME
;
2243 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2244 server
->caps
|= NFS_CAP_CTIME
;
2245 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2246 server
->caps
|= NFS_CAP_MTIME
;
2248 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2249 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2250 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2251 server
->acl_bitmask
= res
.acl_bitmask
;
2252 server
->fh_expire_type
= res
.fh_expire_type
;
2258 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2260 struct nfs4_exception exception
= { };
2263 err
= nfs4_handle_exception(server
,
2264 _nfs4_server_capabilities(server
, fhandle
),
2266 } while (exception
.retry
);
2270 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2271 struct nfs_fsinfo
*info
)
2273 struct nfs4_lookup_root_arg args
= {
2274 .bitmask
= nfs4_fattr_bitmap
,
2276 struct nfs4_lookup_res res
= {
2278 .fattr
= info
->fattr
,
2281 struct rpc_message msg
= {
2282 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2287 nfs_fattr_init(info
->fattr
);
2288 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2291 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2292 struct nfs_fsinfo
*info
)
2294 struct nfs4_exception exception
= { };
2297 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2300 case -NFS4ERR_WRONGSEC
:
2303 err
= nfs4_handle_exception(server
, err
, &exception
);
2305 } while (exception
.retry
);
2310 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2311 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2313 struct rpc_auth
*auth
;
2316 auth
= rpcauth_create(flavor
, server
->client
);
2321 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2326 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2327 struct nfs_fsinfo
*info
)
2329 int i
, len
, status
= 0;
2330 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2332 len
= gss_mech_list_pseudoflavors(&flav_array
[0]);
2333 flav_array
[len
] = RPC_AUTH_NULL
;
2336 for (i
= 0; i
< len
; i
++) {
2337 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2338 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2343 * -EACCESS could mean that the user doesn't have correct permissions
2344 * to access the mount. It could also mean that we tried to mount
2345 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2346 * existing mount programs don't handle -EACCES very well so it should
2347 * be mapped to -EPERM instead.
2349 if (status
== -EACCES
)
2355 * get the file handle for the "/" directory on the server
2357 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2358 struct nfs_fsinfo
*info
)
2360 int minor_version
= server
->nfs_client
->cl_minorversion
;
2361 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2362 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2364 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2365 * by nfs4_map_errors() as this function exits.
2367 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2369 status
= nfs4_server_capabilities(server
, fhandle
);
2371 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2372 return nfs4_map_errors(status
);
2376 * Get locations and (maybe) other attributes of a referral.
2377 * Note that we'll actually follow the referral later when
2378 * we detect fsid mismatch in inode revalidation
2380 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2381 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2382 struct nfs_fh
*fhandle
)
2384 int status
= -ENOMEM
;
2385 struct page
*page
= NULL
;
2386 struct nfs4_fs_locations
*locations
= NULL
;
2388 page
= alloc_page(GFP_KERNEL
);
2391 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2392 if (locations
== NULL
)
2395 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2398 /* Make sure server returned a different fsid for the referral */
2399 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2400 dprintk("%s: server did not return a different fsid for"
2401 " a referral at %s\n", __func__
, name
->name
);
2405 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2406 nfs_fixup_referral_attributes(&locations
->fattr
);
2408 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2409 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2410 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2418 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2420 struct nfs4_getattr_arg args
= {
2422 .bitmask
= server
->attr_bitmask
,
2424 struct nfs4_getattr_res res
= {
2428 struct rpc_message msg
= {
2429 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2434 nfs_fattr_init(fattr
);
2435 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2438 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2440 struct nfs4_exception exception
= { };
2443 err
= nfs4_handle_exception(server
,
2444 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2446 } while (exception
.retry
);
2451 * The file is not closed if it is opened due to the a request to change
2452 * the size of the file. The open call will not be needed once the
2453 * VFS layer lookup-intents are implemented.
2455 * Close is called when the inode is destroyed.
2456 * If we haven't opened the file for O_WRONLY, we
2457 * need to in the size_change case to obtain a stateid.
2460 * Because OPEN is always done by name in nfsv4, it is
2461 * possible that we opened a different file by the same
2462 * name. We can recognize this race condition, but we
2463 * can't do anything about it besides returning an error.
2465 * This will be fixed with VFS changes (lookup-intent).
2468 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2469 struct iattr
*sattr
)
2471 struct inode
*inode
= dentry
->d_inode
;
2472 struct rpc_cred
*cred
= NULL
;
2473 struct nfs4_state
*state
= NULL
;
2476 if (pnfs_ld_layoutret_on_setattr(inode
))
2477 pnfs_return_layout(inode
);
2479 nfs_fattr_init(fattr
);
2481 /* Search for an existing open(O_WRITE) file */
2482 if (sattr
->ia_valid
& ATTR_FILE
) {
2483 struct nfs_open_context
*ctx
;
2485 ctx
= nfs_file_open_context(sattr
->ia_file
);
2492 /* Deal with open(O_TRUNC) */
2493 if (sattr
->ia_valid
& ATTR_OPEN
)
2494 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2496 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2498 nfs_setattr_update_inode(inode
, sattr
);
2502 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2503 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2504 struct nfs_fattr
*fattr
)
2506 struct nfs_server
*server
= NFS_SERVER(dir
);
2508 struct nfs4_lookup_arg args
= {
2509 .bitmask
= server
->attr_bitmask
,
2510 .dir_fh
= NFS_FH(dir
),
2513 struct nfs4_lookup_res res
= {
2518 struct rpc_message msg
= {
2519 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2524 nfs_fattr_init(fattr
);
2526 dprintk("NFS call lookup %s\n", name
->name
);
2527 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2528 dprintk("NFS reply lookup: %d\n", status
);
2532 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2534 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2535 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2536 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2540 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2541 struct qstr
*name
, struct nfs_fh
*fhandle
,
2542 struct nfs_fattr
*fattr
)
2544 struct nfs4_exception exception
= { };
2545 struct rpc_clnt
*client
= *clnt
;
2548 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2550 case -NFS4ERR_BADNAME
:
2553 case -NFS4ERR_MOVED
:
2554 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2556 case -NFS4ERR_WRONGSEC
:
2558 if (client
!= *clnt
)
2561 client
= nfs4_create_sec_client(client
, dir
, name
);
2563 return PTR_ERR(client
);
2565 exception
.retry
= 1;
2568 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2570 } while (exception
.retry
);
2575 else if (client
!= *clnt
)
2576 rpc_shutdown_client(client
);
2581 static int nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
, struct qstr
*name
,
2582 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2585 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2587 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2588 if (client
!= NFS_CLIENT(dir
)) {
2589 rpc_shutdown_client(client
);
2590 nfs_fixup_secinfo_attributes(fattr
);
2596 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2597 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2600 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2602 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2604 rpc_shutdown_client(client
);
2605 return ERR_PTR(status
);
2610 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2612 struct nfs_server
*server
= NFS_SERVER(inode
);
2613 struct nfs4_accessargs args
= {
2614 .fh
= NFS_FH(inode
),
2615 .bitmask
= server
->cache_consistency_bitmask
,
2617 struct nfs4_accessres res
= {
2620 struct rpc_message msg
= {
2621 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2624 .rpc_cred
= entry
->cred
,
2626 int mode
= entry
->mask
;
2630 * Determine which access bits we want to ask for...
2632 if (mode
& MAY_READ
)
2633 args
.access
|= NFS4_ACCESS_READ
;
2634 if (S_ISDIR(inode
->i_mode
)) {
2635 if (mode
& MAY_WRITE
)
2636 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2637 if (mode
& MAY_EXEC
)
2638 args
.access
|= NFS4_ACCESS_LOOKUP
;
2640 if (mode
& MAY_WRITE
)
2641 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2642 if (mode
& MAY_EXEC
)
2643 args
.access
|= NFS4_ACCESS_EXECUTE
;
2646 res
.fattr
= nfs_alloc_fattr();
2647 if (res
.fattr
== NULL
)
2650 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2653 if (res
.access
& NFS4_ACCESS_READ
)
2654 entry
->mask
|= MAY_READ
;
2655 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2656 entry
->mask
|= MAY_WRITE
;
2657 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2658 entry
->mask
|= MAY_EXEC
;
2659 nfs_refresh_inode(inode
, res
.fattr
);
2661 nfs_free_fattr(res
.fattr
);
2665 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2667 struct nfs4_exception exception
= { };
2670 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2671 _nfs4_proc_access(inode
, entry
),
2673 } while (exception
.retry
);
2678 * TODO: For the time being, we don't try to get any attributes
2679 * along with any of the zero-copy operations READ, READDIR,
2682 * In the case of the first three, we want to put the GETATTR
2683 * after the read-type operation -- this is because it is hard
2684 * to predict the length of a GETATTR response in v4, and thus
2685 * align the READ data correctly. This means that the GETATTR
2686 * may end up partially falling into the page cache, and we should
2687 * shift it into the 'tail' of the xdr_buf before processing.
2688 * To do this efficiently, we need to know the total length
2689 * of data received, which doesn't seem to be available outside
2692 * In the case of WRITE, we also want to put the GETATTR after
2693 * the operation -- in this case because we want to make sure
2694 * we get the post-operation mtime and size. This means that
2695 * we can't use xdr_encode_pages() as written: we need a variant
2696 * of it which would leave room in the 'tail' iovec.
2698 * Both of these changes to the XDR layer would in fact be quite
2699 * minor, but I decided to leave them for a subsequent patch.
2701 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2702 unsigned int pgbase
, unsigned int pglen
)
2704 struct nfs4_readlink args
= {
2705 .fh
= NFS_FH(inode
),
2710 struct nfs4_readlink_res res
;
2711 struct rpc_message msg
= {
2712 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2717 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2720 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2721 unsigned int pgbase
, unsigned int pglen
)
2723 struct nfs4_exception exception
= { };
2726 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2727 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2729 } while (exception
.retry
);
2735 * We will need to arrange for the VFS layer to provide an atomic open.
2736 * Until then, this create/open method is prone to inefficiency and race
2737 * conditions due to the lookup, create, and open VFS calls from sys_open()
2738 * placed on the wire.
2740 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2741 * The file will be opened again in the subsequent VFS open call
2742 * (nfs4_proc_file_open).
2744 * The open for read will just hang around to be used by any process that
2745 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2749 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2750 int flags
, struct nfs_open_context
*ctx
)
2752 struct dentry
*de
= dentry
;
2753 struct nfs4_state
*state
;
2754 struct rpc_cred
*cred
= NULL
;
2763 sattr
->ia_mode
&= ~current_umask();
2764 state
= nfs4_do_open(dir
, de
, fmode
, flags
, sattr
, cred
);
2766 if (IS_ERR(state
)) {
2767 status
= PTR_ERR(state
);
2770 d_add(dentry
, igrab(state
->inode
));
2771 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2775 nfs4_close_sync(state
, fmode
);
2780 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2782 struct nfs_server
*server
= NFS_SERVER(dir
);
2783 struct nfs_removeargs args
= {
2785 .name
.len
= name
->len
,
2786 .name
.name
= name
->name
,
2787 .bitmask
= server
->attr_bitmask
,
2789 struct nfs_removeres res
= {
2792 struct rpc_message msg
= {
2793 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2797 int status
= -ENOMEM
;
2799 res
.dir_attr
= nfs_alloc_fattr();
2800 if (res
.dir_attr
== NULL
)
2803 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2805 update_changeattr(dir
, &res
.cinfo
);
2806 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2808 nfs_free_fattr(res
.dir_attr
);
2813 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2815 struct nfs4_exception exception
= { };
2818 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2819 _nfs4_proc_remove(dir
, name
),
2821 } while (exception
.retry
);
2825 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2827 struct nfs_server
*server
= NFS_SERVER(dir
);
2828 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2829 struct nfs_removeres
*res
= msg
->rpc_resp
;
2831 args
->bitmask
= server
->cache_consistency_bitmask
;
2832 res
->server
= server
;
2833 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2834 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
2837 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
2839 if (nfs4_setup_sequence(NFS_SERVER(data
->dir
),
2840 &data
->args
.seq_args
,
2844 rpc_call_start(task
);
2847 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2849 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2851 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2853 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2855 update_changeattr(dir
, &res
->cinfo
);
2856 nfs_post_op_update_inode(dir
, res
->dir_attr
);
2860 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2862 struct nfs_server
*server
= NFS_SERVER(dir
);
2863 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2864 struct nfs_renameres
*res
= msg
->rpc_resp
;
2866 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2867 arg
->bitmask
= server
->attr_bitmask
;
2868 res
->server
= server
;
2869 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
2872 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
2874 if (nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
2875 &data
->args
.seq_args
,
2879 rpc_call_start(task
);
2882 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2883 struct inode
*new_dir
)
2885 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2887 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2889 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2892 update_changeattr(old_dir
, &res
->old_cinfo
);
2893 nfs_post_op_update_inode(old_dir
, res
->old_fattr
);
2894 update_changeattr(new_dir
, &res
->new_cinfo
);
2895 nfs_post_op_update_inode(new_dir
, res
->new_fattr
);
2899 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2900 struct inode
*new_dir
, struct qstr
*new_name
)
2902 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2903 struct nfs_renameargs arg
= {
2904 .old_dir
= NFS_FH(old_dir
),
2905 .new_dir
= NFS_FH(new_dir
),
2906 .old_name
= old_name
,
2907 .new_name
= new_name
,
2908 .bitmask
= server
->attr_bitmask
,
2910 struct nfs_renameres res
= {
2913 struct rpc_message msg
= {
2914 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2918 int status
= -ENOMEM
;
2920 res
.old_fattr
= nfs_alloc_fattr();
2921 res
.new_fattr
= nfs_alloc_fattr();
2922 if (res
.old_fattr
== NULL
|| res
.new_fattr
== NULL
)
2925 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2927 update_changeattr(old_dir
, &res
.old_cinfo
);
2928 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2929 update_changeattr(new_dir
, &res
.new_cinfo
);
2930 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2933 nfs_free_fattr(res
.new_fattr
);
2934 nfs_free_fattr(res
.old_fattr
);
2938 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2939 struct inode
*new_dir
, struct qstr
*new_name
)
2941 struct nfs4_exception exception
= { };
2944 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2945 _nfs4_proc_rename(old_dir
, old_name
,
2948 } while (exception
.retry
);
2952 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2954 struct nfs_server
*server
= NFS_SERVER(inode
);
2955 struct nfs4_link_arg arg
= {
2956 .fh
= NFS_FH(inode
),
2957 .dir_fh
= NFS_FH(dir
),
2959 .bitmask
= server
->attr_bitmask
,
2961 struct nfs4_link_res res
= {
2964 struct rpc_message msg
= {
2965 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2969 int status
= -ENOMEM
;
2971 res
.fattr
= nfs_alloc_fattr();
2972 res
.dir_attr
= nfs_alloc_fattr();
2973 if (res
.fattr
== NULL
|| res
.dir_attr
== NULL
)
2976 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2978 update_changeattr(dir
, &res
.cinfo
);
2979 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2980 nfs_post_op_update_inode(inode
, res
.fattr
);
2983 nfs_free_fattr(res
.dir_attr
);
2984 nfs_free_fattr(res
.fattr
);
2988 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2990 struct nfs4_exception exception
= { };
2993 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2994 _nfs4_proc_link(inode
, dir
, name
),
2996 } while (exception
.retry
);
3000 struct nfs4_createdata
{
3001 struct rpc_message msg
;
3002 struct nfs4_create_arg arg
;
3003 struct nfs4_create_res res
;
3005 struct nfs_fattr fattr
;
3006 struct nfs_fattr dir_fattr
;
3009 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3010 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3012 struct nfs4_createdata
*data
;
3014 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3016 struct nfs_server
*server
= NFS_SERVER(dir
);
3018 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3019 data
->msg
.rpc_argp
= &data
->arg
;
3020 data
->msg
.rpc_resp
= &data
->res
;
3021 data
->arg
.dir_fh
= NFS_FH(dir
);
3022 data
->arg
.server
= server
;
3023 data
->arg
.name
= name
;
3024 data
->arg
.attrs
= sattr
;
3025 data
->arg
.ftype
= ftype
;
3026 data
->arg
.bitmask
= server
->attr_bitmask
;
3027 data
->res
.server
= server
;
3028 data
->res
.fh
= &data
->fh
;
3029 data
->res
.fattr
= &data
->fattr
;
3030 data
->res
.dir_fattr
= &data
->dir_fattr
;
3031 nfs_fattr_init(data
->res
.fattr
);
3032 nfs_fattr_init(data
->res
.dir_fattr
);
3037 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3039 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3040 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3042 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3043 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
3044 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3049 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3054 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3055 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3057 struct nfs4_createdata
*data
;
3058 int status
= -ENAMETOOLONG
;
3060 if (len
> NFS4_MAXPATHLEN
)
3064 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3068 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3069 data
->arg
.u
.symlink
.pages
= &page
;
3070 data
->arg
.u
.symlink
.len
= len
;
3072 status
= nfs4_do_create(dir
, dentry
, data
);
3074 nfs4_free_createdata(data
);
3079 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3080 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3082 struct nfs4_exception exception
= { };
3085 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3086 _nfs4_proc_symlink(dir
, dentry
, page
,
3089 } while (exception
.retry
);
3093 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3094 struct iattr
*sattr
)
3096 struct nfs4_createdata
*data
;
3097 int status
= -ENOMEM
;
3099 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3103 status
= nfs4_do_create(dir
, dentry
, data
);
3105 nfs4_free_createdata(data
);
3110 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3111 struct iattr
*sattr
)
3113 struct nfs4_exception exception
= { };
3116 sattr
->ia_mode
&= ~current_umask();
3118 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3119 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3121 } while (exception
.retry
);
3125 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3126 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3128 struct inode
*dir
= dentry
->d_inode
;
3129 struct nfs4_readdir_arg args
= {
3134 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3137 struct nfs4_readdir_res res
;
3138 struct rpc_message msg
= {
3139 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3146 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3147 dentry
->d_parent
->d_name
.name
,
3148 dentry
->d_name
.name
,
3149 (unsigned long long)cookie
);
3150 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
3151 res
.pgbase
= args
.pgbase
;
3152 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3154 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3155 status
+= args
.pgbase
;
3158 nfs_invalidate_atime(dir
);
3160 dprintk("%s: returns %d\n", __func__
, status
);
3164 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3165 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3167 struct nfs4_exception exception
= { };
3170 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3171 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3172 pages
, count
, plus
),
3174 } while (exception
.retry
);
3178 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3179 struct iattr
*sattr
, dev_t rdev
)
3181 struct nfs4_createdata
*data
;
3182 int mode
= sattr
->ia_mode
;
3183 int status
= -ENOMEM
;
3185 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
3186 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
3188 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3193 data
->arg
.ftype
= NF4FIFO
;
3194 else if (S_ISBLK(mode
)) {
3195 data
->arg
.ftype
= NF4BLK
;
3196 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3197 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3199 else if (S_ISCHR(mode
)) {
3200 data
->arg
.ftype
= NF4CHR
;
3201 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3202 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3205 status
= nfs4_do_create(dir
, dentry
, data
);
3207 nfs4_free_createdata(data
);
3212 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3213 struct iattr
*sattr
, dev_t rdev
)
3215 struct nfs4_exception exception
= { };
3218 sattr
->ia_mode
&= ~current_umask();
3220 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3221 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3223 } while (exception
.retry
);
3227 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3228 struct nfs_fsstat
*fsstat
)
3230 struct nfs4_statfs_arg args
= {
3232 .bitmask
= server
->attr_bitmask
,
3234 struct nfs4_statfs_res res
= {
3237 struct rpc_message msg
= {
3238 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3243 nfs_fattr_init(fsstat
->fattr
);
3244 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3247 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3249 struct nfs4_exception exception
= { };
3252 err
= nfs4_handle_exception(server
,
3253 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3255 } while (exception
.retry
);
3259 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3260 struct nfs_fsinfo
*fsinfo
)
3262 struct nfs4_fsinfo_arg args
= {
3264 .bitmask
= server
->attr_bitmask
,
3266 struct nfs4_fsinfo_res res
= {
3269 struct rpc_message msg
= {
3270 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3275 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3278 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3280 struct nfs4_exception exception
= { };
3284 err
= nfs4_handle_exception(server
,
3285 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3287 } while (exception
.retry
);
3291 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3293 nfs_fattr_init(fsinfo
->fattr
);
3294 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3297 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3298 struct nfs_pathconf
*pathconf
)
3300 struct nfs4_pathconf_arg args
= {
3302 .bitmask
= server
->attr_bitmask
,
3304 struct nfs4_pathconf_res res
= {
3305 .pathconf
= pathconf
,
3307 struct rpc_message msg
= {
3308 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3313 /* None of the pathconf attributes are mandatory to implement */
3314 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3315 memset(pathconf
, 0, sizeof(*pathconf
));
3319 nfs_fattr_init(pathconf
->fattr
);
3320 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3323 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3324 struct nfs_pathconf
*pathconf
)
3326 struct nfs4_exception exception
= { };
3330 err
= nfs4_handle_exception(server
,
3331 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3333 } while (exception
.retry
);
3337 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3339 nfs_invalidate_atime(data
->inode
);
3342 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3344 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3346 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3347 rpc_restart_call_prepare(task
);
3351 __nfs4_read_done_cb(data
);
3352 if (task
->tk_status
> 0)
3353 renew_lease(server
, data
->timestamp
);
3357 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3360 dprintk("--> %s\n", __func__
);
3362 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3365 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3366 nfs4_read_done_cb(task
, data
);
3369 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3371 data
->timestamp
= jiffies
;
3372 data
->read_done_cb
= nfs4_read_done_cb
;
3373 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3374 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3377 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3379 if (nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3380 &data
->args
.seq_args
,
3384 rpc_call_start(task
);
3387 /* Reset the the nfs_read_data to send the read to the MDS. */
3388 void nfs4_reset_read(struct rpc_task
*task
, struct nfs_read_data
*data
)
3390 dprintk("%s Reset task for i/o through\n", __func__
);
3391 put_lseg(data
->lseg
);
3393 /* offsets will differ in the dense stripe case */
3394 data
->args
.offset
= data
->mds_offset
;
3395 data
->ds_clp
= NULL
;
3396 data
->args
.fh
= NFS_FH(data
->inode
);
3397 data
->read_done_cb
= nfs4_read_done_cb
;
3398 task
->tk_ops
= data
->mds_ops
;
3399 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3401 EXPORT_SYMBOL_GPL(nfs4_reset_read
);
3403 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3405 struct inode
*inode
= data
->inode
;
3407 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3408 rpc_restart_call_prepare(task
);
3411 if (task
->tk_status
>= 0) {
3412 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3413 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3418 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3420 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3422 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3423 nfs4_write_done_cb(task
, data
);
3426 /* Reset the the nfs_write_data to send the write to the MDS. */
3427 void nfs4_reset_write(struct rpc_task
*task
, struct nfs_write_data
*data
)
3429 dprintk("%s Reset task for i/o through\n", __func__
);
3430 put_lseg(data
->lseg
);
3432 data
->ds_clp
= NULL
;
3433 data
->write_done_cb
= nfs4_write_done_cb
;
3434 data
->args
.fh
= NFS_FH(data
->inode
);
3435 data
->args
.bitmask
= data
->res
.server
->cache_consistency_bitmask
;
3436 data
->args
.offset
= data
->mds_offset
;
3437 data
->res
.fattr
= &data
->fattr
;
3438 task
->tk_ops
= data
->mds_ops
;
3439 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3441 EXPORT_SYMBOL_GPL(nfs4_reset_write
);
3443 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3445 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3448 data
->args
.bitmask
= NULL
;
3449 data
->res
.fattr
= NULL
;
3451 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3452 if (!data
->write_done_cb
)
3453 data
->write_done_cb
= nfs4_write_done_cb
;
3454 data
->res
.server
= server
;
3455 data
->timestamp
= jiffies
;
3457 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3458 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3461 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3463 if (nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3464 &data
->args
.seq_args
,
3468 rpc_call_start(task
);
3471 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3473 if (nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3474 &data
->args
.seq_args
,
3478 rpc_call_start(task
);
3481 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3483 struct inode
*inode
= data
->inode
;
3485 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3486 rpc_restart_call_prepare(task
);
3489 nfs_refresh_inode(inode
, data
->res
.fattr
);
3493 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3495 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3497 return data
->commit_done_cb(task
, data
);
3500 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3502 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3505 data
->args
.bitmask
= NULL
;
3506 data
->res
.fattr
= NULL
;
3508 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3509 if (data
->commit_done_cb
== NULL
)
3510 data
->commit_done_cb
= nfs4_commit_done_cb
;
3511 data
->res
.server
= server
;
3512 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3513 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3516 struct nfs4_renewdata
{
3517 struct nfs_client
*client
;
3518 unsigned long timestamp
;
3522 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3523 * standalone procedure for queueing an asynchronous RENEW.
3525 static void nfs4_renew_release(void *calldata
)
3527 struct nfs4_renewdata
*data
= calldata
;
3528 struct nfs_client
*clp
= data
->client
;
3530 if (atomic_read(&clp
->cl_count
) > 1)
3531 nfs4_schedule_state_renewal(clp
);
3532 nfs_put_client(clp
);
3536 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3538 struct nfs4_renewdata
*data
= calldata
;
3539 struct nfs_client
*clp
= data
->client
;
3540 unsigned long timestamp
= data
->timestamp
;
3542 if (task
->tk_status
< 0) {
3543 /* Unless we're shutting down, schedule state recovery! */
3544 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3546 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3547 nfs4_schedule_lease_recovery(clp
);
3550 nfs4_schedule_path_down_recovery(clp
);
3552 do_renew_lease(clp
, timestamp
);
3555 static const struct rpc_call_ops nfs4_renew_ops
= {
3556 .rpc_call_done
= nfs4_renew_done
,
3557 .rpc_release
= nfs4_renew_release
,
3560 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3562 struct rpc_message msg
= {
3563 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3567 struct nfs4_renewdata
*data
;
3569 if (renew_flags
== 0)
3571 if (!atomic_inc_not_zero(&clp
->cl_count
))
3573 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3577 data
->timestamp
= jiffies
;
3578 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3579 &nfs4_renew_ops
, data
);
3582 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3584 struct rpc_message msg
= {
3585 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3589 unsigned long now
= jiffies
;
3592 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3595 do_renew_lease(clp
, now
);
3599 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3601 return (server
->caps
& NFS_CAP_ACLS
)
3602 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3603 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3606 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3607 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3610 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3612 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3613 struct page
**pages
, unsigned int *pgbase
)
3615 struct page
*newpage
, **spages
;
3621 len
= min_t(size_t, PAGE_CACHE_SIZE
, buflen
);
3622 newpage
= alloc_page(GFP_KERNEL
);
3624 if (newpage
== NULL
)
3626 memcpy(page_address(newpage
), buf
, len
);
3631 } while (buflen
!= 0);
3637 __free_page(spages
[rc
-1]);
3641 struct nfs4_cached_acl
{
3647 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3649 struct nfs_inode
*nfsi
= NFS_I(inode
);
3651 spin_lock(&inode
->i_lock
);
3652 kfree(nfsi
->nfs4_acl
);
3653 nfsi
->nfs4_acl
= acl
;
3654 spin_unlock(&inode
->i_lock
);
3657 static void nfs4_zap_acl_attr(struct inode
*inode
)
3659 nfs4_set_cached_acl(inode
, NULL
);
3662 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3664 struct nfs_inode
*nfsi
= NFS_I(inode
);
3665 struct nfs4_cached_acl
*acl
;
3668 spin_lock(&inode
->i_lock
);
3669 acl
= nfsi
->nfs4_acl
;
3672 if (buf
== NULL
) /* user is just asking for length */
3674 if (acl
->cached
== 0)
3676 ret
= -ERANGE
; /* see getxattr(2) man page */
3677 if (acl
->len
> buflen
)
3679 memcpy(buf
, acl
->data
, acl
->len
);
3683 spin_unlock(&inode
->i_lock
);
3687 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3689 struct nfs4_cached_acl
*acl
;
3691 if (pages
&& acl_len
<= PAGE_SIZE
) {
3692 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3696 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3698 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3705 nfs4_set_cached_acl(inode
, acl
);
3709 * The getxattr API returns the required buffer length when called with a
3710 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3711 * the required buf. On a NULL buf, we send a page of data to the server
3712 * guessing that the ACL request can be serviced by a page. If so, we cache
3713 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3714 * the cache. If not so, we throw away the page, and cache the required
3715 * length. The next getxattr call will then produce another round trip to
3716 * the server, this time with the input buf of the required size.
3718 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3720 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3721 struct nfs_getaclargs args
= {
3722 .fh
= NFS_FH(inode
),
3726 struct nfs_getaclres res
= {
3729 struct rpc_message msg
= {
3730 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3734 int ret
= -ENOMEM
, npages
, i
, acl_len
= 0;
3736 npages
= (buflen
+ PAGE_SIZE
- 1) >> PAGE_SHIFT
;
3737 /* As long as we're doing a round trip to the server anyway,
3738 * let's be prepared for a page of acl data. */
3742 /* Add an extra page to handle the bitmap returned */
3745 for (i
= 0; i
< npages
; i
++) {
3746 pages
[i
] = alloc_page(GFP_KERNEL
);
3751 /* for decoding across pages */
3752 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3753 if (!res
.acl_scratch
)
3756 args
.acl_len
= npages
* PAGE_SIZE
;
3757 args
.acl_pgbase
= 0;
3759 /* Let decode_getfacl know not to fail if the ACL data is larger than
3760 * the page we send as a guess */
3762 res
.acl_flags
|= NFS4_ACL_LEN_REQUEST
;
3764 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3765 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3766 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3767 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3771 acl_len
= res
.acl_len
- res
.acl_data_offset
;
3772 if (acl_len
> args
.acl_len
)
3773 nfs4_write_cached_acl(inode
, NULL
, 0, acl_len
);
3775 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
,
3779 if (acl_len
> buflen
)
3781 _copy_from_pages(buf
, pages
, res
.acl_data_offset
,
3786 for (i
= 0; i
< npages
; i
++)
3788 __free_page(pages
[i
]);
3789 if (res
.acl_scratch
)
3790 __free_page(res
.acl_scratch
);
3794 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3796 struct nfs4_exception exception
= { };
3799 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3802 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3803 } while (exception
.retry
);
3807 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3809 struct nfs_server
*server
= NFS_SERVER(inode
);
3812 if (!nfs4_server_supports_acls(server
))
3814 ret
= nfs_revalidate_inode(server
, inode
);
3817 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3818 nfs_zap_acl_cache(inode
);
3819 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3821 /* -ENOENT is returned if there is no ACL or if there is an ACL
3822 * but no cached acl data, just the acl length */
3824 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3827 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3829 struct nfs_server
*server
= NFS_SERVER(inode
);
3830 struct page
*pages
[NFS4ACL_MAXPAGES
];
3831 struct nfs_setaclargs arg
= {
3832 .fh
= NFS_FH(inode
),
3836 struct nfs_setaclres res
;
3837 struct rpc_message msg
= {
3838 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3844 if (!nfs4_server_supports_acls(server
))
3846 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3849 nfs_inode_return_delegation(inode
);
3850 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3853 * Free each page after tx, so the only ref left is
3854 * held by the network stack
3857 put_page(pages
[i
-1]);
3860 * Acl update can result in inode attribute update.
3861 * so mark the attribute cache invalid.
3863 spin_lock(&inode
->i_lock
);
3864 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3865 spin_unlock(&inode
->i_lock
);
3866 nfs_access_zap_cache(inode
);
3867 nfs_zap_acl_cache(inode
);
3871 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3873 struct nfs4_exception exception
= { };
3876 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3877 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3879 } while (exception
.retry
);
3884 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3886 struct nfs_client
*clp
= server
->nfs_client
;
3888 if (task
->tk_status
>= 0)
3890 switch(task
->tk_status
) {
3891 case -NFS4ERR_DELEG_REVOKED
:
3892 case -NFS4ERR_ADMIN_REVOKED
:
3893 case -NFS4ERR_BAD_STATEID
:
3896 nfs_remove_bad_delegation(state
->inode
);
3897 case -NFS4ERR_OPENMODE
:
3900 nfs4_schedule_stateid_recovery(server
, state
);
3901 goto wait_on_recovery
;
3902 case -NFS4ERR_EXPIRED
:
3904 nfs4_schedule_stateid_recovery(server
, state
);
3905 case -NFS4ERR_STALE_STATEID
:
3906 case -NFS4ERR_STALE_CLIENTID
:
3907 nfs4_schedule_lease_recovery(clp
);
3908 goto wait_on_recovery
;
3909 #if defined(CONFIG_NFS_V4_1)
3910 case -NFS4ERR_BADSESSION
:
3911 case -NFS4ERR_BADSLOT
:
3912 case -NFS4ERR_BAD_HIGH_SLOT
:
3913 case -NFS4ERR_DEADSESSION
:
3914 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3915 case -NFS4ERR_SEQ_FALSE_RETRY
:
3916 case -NFS4ERR_SEQ_MISORDERED
:
3917 dprintk("%s ERROR %d, Reset session\n", __func__
,
3919 nfs4_schedule_session_recovery(clp
->cl_session
);
3920 task
->tk_status
= 0;
3922 #endif /* CONFIG_NFS_V4_1 */
3923 case -NFS4ERR_DELAY
:
3924 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3925 case -NFS4ERR_GRACE
:
3927 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3928 task
->tk_status
= 0;
3930 case -NFS4ERR_RETRY_UNCACHED_REP
:
3931 case -NFS4ERR_OLD_STATEID
:
3932 task
->tk_status
= 0;
3935 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3938 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3939 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3940 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3941 task
->tk_status
= 0;
3945 static void nfs4_construct_boot_verifier(struct nfs_client
*clp
,
3946 nfs4_verifier
*bootverf
)
3950 verf
[0] = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3951 verf
[1] = htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3952 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
3955 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
3956 unsigned short port
, struct rpc_cred
*cred
,
3957 struct nfs4_setclientid_res
*res
)
3959 nfs4_verifier sc_verifier
;
3960 struct nfs4_setclientid setclientid
= {
3961 .sc_verifier
= &sc_verifier
,
3963 .sc_cb_ident
= clp
->cl_cb_ident
,
3965 struct rpc_message msg
= {
3966 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3967 .rpc_argp
= &setclientid
,
3974 nfs4_construct_boot_verifier(clp
, &sc_verifier
);
3978 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3979 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3981 rpc_peeraddr2str(clp
->cl_rpcclient
,
3983 rpc_peeraddr2str(clp
->cl_rpcclient
,
3985 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3986 clp
->cl_id_uniquifier
);
3987 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3988 sizeof(setclientid
.sc_netid
),
3989 rpc_peeraddr2str(clp
->cl_rpcclient
,
3990 RPC_DISPLAY_NETID
));
3991 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3992 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3993 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3996 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3997 if (status
!= -NFS4ERR_CLID_INUSE
)
4000 ++clp
->cl_id_uniquifier
;
4004 ssleep(clp
->cl_lease_time
/ HZ
+ 1);
4009 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4010 struct nfs4_setclientid_res
*arg
,
4011 struct rpc_cred
*cred
)
4013 struct nfs_fsinfo fsinfo
;
4014 struct rpc_message msg
= {
4015 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4017 .rpc_resp
= &fsinfo
,
4024 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4026 spin_lock(&clp
->cl_lock
);
4027 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4028 clp
->cl_last_renewal
= now
;
4029 spin_unlock(&clp
->cl_lock
);
4034 struct nfs4_delegreturndata
{
4035 struct nfs4_delegreturnargs args
;
4036 struct nfs4_delegreturnres res
;
4038 nfs4_stateid stateid
;
4039 unsigned long timestamp
;
4040 struct nfs_fattr fattr
;
4044 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4046 struct nfs4_delegreturndata
*data
= calldata
;
4048 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4051 switch (task
->tk_status
) {
4052 case -NFS4ERR_STALE_STATEID
:
4053 case -NFS4ERR_EXPIRED
:
4055 renew_lease(data
->res
.server
, data
->timestamp
);
4058 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4060 rpc_restart_call_prepare(task
);
4064 data
->rpc_status
= task
->tk_status
;
4067 static void nfs4_delegreturn_release(void *calldata
)
4072 #if defined(CONFIG_NFS_V4_1)
4073 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4075 struct nfs4_delegreturndata
*d_data
;
4077 d_data
= (struct nfs4_delegreturndata
*)data
;
4079 if (nfs4_setup_sequence(d_data
->res
.server
,
4080 &d_data
->args
.seq_args
,
4081 &d_data
->res
.seq_res
, task
))
4083 rpc_call_start(task
);
4085 #endif /* CONFIG_NFS_V4_1 */
4087 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4088 #if defined(CONFIG_NFS_V4_1)
4089 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4090 #endif /* CONFIG_NFS_V4_1 */
4091 .rpc_call_done
= nfs4_delegreturn_done
,
4092 .rpc_release
= nfs4_delegreturn_release
,
4095 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4097 struct nfs4_delegreturndata
*data
;
4098 struct nfs_server
*server
= NFS_SERVER(inode
);
4099 struct rpc_task
*task
;
4100 struct rpc_message msg
= {
4101 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4104 struct rpc_task_setup task_setup_data
= {
4105 .rpc_client
= server
->client
,
4106 .rpc_message
= &msg
,
4107 .callback_ops
= &nfs4_delegreturn_ops
,
4108 .flags
= RPC_TASK_ASYNC
,
4112 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4115 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4116 data
->args
.fhandle
= &data
->fh
;
4117 data
->args
.stateid
= &data
->stateid
;
4118 data
->args
.bitmask
= server
->attr_bitmask
;
4119 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4120 nfs4_stateid_copy(&data
->stateid
, stateid
);
4121 data
->res
.fattr
= &data
->fattr
;
4122 data
->res
.server
= server
;
4123 nfs_fattr_init(data
->res
.fattr
);
4124 data
->timestamp
= jiffies
;
4125 data
->rpc_status
= 0;
4127 task_setup_data
.callback_data
= data
;
4128 msg
.rpc_argp
= &data
->args
;
4129 msg
.rpc_resp
= &data
->res
;
4130 task
= rpc_run_task(&task_setup_data
);
4132 return PTR_ERR(task
);
4135 status
= nfs4_wait_for_completion_rpc_task(task
);
4138 status
= data
->rpc_status
;
4141 nfs_refresh_inode(inode
, &data
->fattr
);
4147 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4149 struct nfs_server
*server
= NFS_SERVER(inode
);
4150 struct nfs4_exception exception
= { };
4153 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4155 case -NFS4ERR_STALE_STATEID
:
4156 case -NFS4ERR_EXPIRED
:
4160 err
= nfs4_handle_exception(server
, err
, &exception
);
4161 } while (exception
.retry
);
4165 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4166 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4169 * sleep, with exponential backoff, and retry the LOCK operation.
4171 static unsigned long
4172 nfs4_set_lock_task_retry(unsigned long timeout
)
4174 freezable_schedule_timeout_killable(timeout
);
4176 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4177 return NFS4_LOCK_MAXTIMEOUT
;
4181 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4183 struct inode
*inode
= state
->inode
;
4184 struct nfs_server
*server
= NFS_SERVER(inode
);
4185 struct nfs_client
*clp
= server
->nfs_client
;
4186 struct nfs_lockt_args arg
= {
4187 .fh
= NFS_FH(inode
),
4190 struct nfs_lockt_res res
= {
4193 struct rpc_message msg
= {
4194 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4197 .rpc_cred
= state
->owner
->so_cred
,
4199 struct nfs4_lock_state
*lsp
;
4202 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4203 status
= nfs4_set_lock_state(state
, request
);
4206 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4207 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4208 arg
.lock_owner
.s_dev
= server
->s_dev
;
4209 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4212 request
->fl_type
= F_UNLCK
;
4214 case -NFS4ERR_DENIED
:
4217 request
->fl_ops
->fl_release_private(request
);
4222 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4224 struct nfs4_exception exception
= { };
4228 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4229 _nfs4_proc_getlk(state
, cmd
, request
),
4231 } while (exception
.retry
);
4235 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4238 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4240 res
= posix_lock_file_wait(file
, fl
);
4243 res
= flock_lock_file_wait(file
, fl
);
4251 struct nfs4_unlockdata
{
4252 struct nfs_locku_args arg
;
4253 struct nfs_locku_res res
;
4254 struct nfs4_lock_state
*lsp
;
4255 struct nfs_open_context
*ctx
;
4256 struct file_lock fl
;
4257 const struct nfs_server
*server
;
4258 unsigned long timestamp
;
4261 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4262 struct nfs_open_context
*ctx
,
4263 struct nfs4_lock_state
*lsp
,
4264 struct nfs_seqid
*seqid
)
4266 struct nfs4_unlockdata
*p
;
4267 struct inode
*inode
= lsp
->ls_state
->inode
;
4269 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4272 p
->arg
.fh
= NFS_FH(inode
);
4274 p
->arg
.seqid
= seqid
;
4275 p
->res
.seqid
= seqid
;
4276 p
->arg
.stateid
= &lsp
->ls_stateid
;
4278 atomic_inc(&lsp
->ls_count
);
4279 /* Ensure we don't close file until we're done freeing locks! */
4280 p
->ctx
= get_nfs_open_context(ctx
);
4281 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4282 p
->server
= NFS_SERVER(inode
);
4286 static void nfs4_locku_release_calldata(void *data
)
4288 struct nfs4_unlockdata
*calldata
= data
;
4289 nfs_free_seqid(calldata
->arg
.seqid
);
4290 nfs4_put_lock_state(calldata
->lsp
);
4291 put_nfs_open_context(calldata
->ctx
);
4295 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4297 struct nfs4_unlockdata
*calldata
= data
;
4299 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4301 switch (task
->tk_status
) {
4303 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4304 &calldata
->res
.stateid
);
4305 renew_lease(calldata
->server
, calldata
->timestamp
);
4307 case -NFS4ERR_BAD_STATEID
:
4308 case -NFS4ERR_OLD_STATEID
:
4309 case -NFS4ERR_STALE_STATEID
:
4310 case -NFS4ERR_EXPIRED
:
4313 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4314 rpc_restart_call_prepare(task
);
4318 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4320 struct nfs4_unlockdata
*calldata
= data
;
4322 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4324 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
4325 /* Note: exit _without_ running nfs4_locku_done */
4326 task
->tk_action
= NULL
;
4329 calldata
->timestamp
= jiffies
;
4330 if (nfs4_setup_sequence(calldata
->server
,
4331 &calldata
->arg
.seq_args
,
4332 &calldata
->res
.seq_res
, task
))
4334 rpc_call_start(task
);
4337 static const struct rpc_call_ops nfs4_locku_ops
= {
4338 .rpc_call_prepare
= nfs4_locku_prepare
,
4339 .rpc_call_done
= nfs4_locku_done
,
4340 .rpc_release
= nfs4_locku_release_calldata
,
4343 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4344 struct nfs_open_context
*ctx
,
4345 struct nfs4_lock_state
*lsp
,
4346 struct nfs_seqid
*seqid
)
4348 struct nfs4_unlockdata
*data
;
4349 struct rpc_message msg
= {
4350 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4351 .rpc_cred
= ctx
->cred
,
4353 struct rpc_task_setup task_setup_data
= {
4354 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4355 .rpc_message
= &msg
,
4356 .callback_ops
= &nfs4_locku_ops
,
4357 .workqueue
= nfsiod_workqueue
,
4358 .flags
= RPC_TASK_ASYNC
,
4361 /* Ensure this is an unlock - when canceling a lock, the
4362 * canceled lock is passed in, and it won't be an unlock.
4364 fl
->fl_type
= F_UNLCK
;
4366 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4368 nfs_free_seqid(seqid
);
4369 return ERR_PTR(-ENOMEM
);
4372 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4373 msg
.rpc_argp
= &data
->arg
;
4374 msg
.rpc_resp
= &data
->res
;
4375 task_setup_data
.callback_data
= data
;
4376 return rpc_run_task(&task_setup_data
);
4379 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4381 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4382 struct nfs_seqid
*seqid
;
4383 struct nfs4_lock_state
*lsp
;
4384 struct rpc_task
*task
;
4386 unsigned char fl_flags
= request
->fl_flags
;
4388 status
= nfs4_set_lock_state(state
, request
);
4389 /* Unlock _before_ we do the RPC call */
4390 request
->fl_flags
|= FL_EXISTS
;
4391 down_read(&nfsi
->rwsem
);
4392 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4393 up_read(&nfsi
->rwsem
);
4396 up_read(&nfsi
->rwsem
);
4399 /* Is this a delegated lock? */
4400 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4402 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4403 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4407 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4408 status
= PTR_ERR(task
);
4411 status
= nfs4_wait_for_completion_rpc_task(task
);
4414 request
->fl_flags
= fl_flags
;
4418 struct nfs4_lockdata
{
4419 struct nfs_lock_args arg
;
4420 struct nfs_lock_res res
;
4421 struct nfs4_lock_state
*lsp
;
4422 struct nfs_open_context
*ctx
;
4423 struct file_lock fl
;
4424 unsigned long timestamp
;
4427 struct nfs_server
*server
;
4430 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4431 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4434 struct nfs4_lockdata
*p
;
4435 struct inode
*inode
= lsp
->ls_state
->inode
;
4436 struct nfs_server
*server
= NFS_SERVER(inode
);
4438 p
= kzalloc(sizeof(*p
), gfp_mask
);
4442 p
->arg
.fh
= NFS_FH(inode
);
4444 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4445 if (p
->arg
.open_seqid
== NULL
)
4447 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4448 if (p
->arg
.lock_seqid
== NULL
)
4449 goto out_free_seqid
;
4450 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4451 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4452 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4453 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4454 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4457 atomic_inc(&lsp
->ls_count
);
4458 p
->ctx
= get_nfs_open_context(ctx
);
4459 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4462 nfs_free_seqid(p
->arg
.open_seqid
);
4468 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4470 struct nfs4_lockdata
*data
= calldata
;
4471 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4473 dprintk("%s: begin!\n", __func__
);
4474 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4476 /* Do we need to do an open_to_lock_owner? */
4477 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4478 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4480 data
->arg
.open_stateid
= &state
->stateid
;
4481 data
->arg
.new_lock_owner
= 1;
4482 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4484 data
->arg
.new_lock_owner
= 0;
4485 data
->timestamp
= jiffies
;
4486 if (nfs4_setup_sequence(data
->server
,
4487 &data
->arg
.seq_args
,
4488 &data
->res
.seq_res
, task
))
4490 rpc_call_start(task
);
4491 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4494 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4496 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4497 nfs4_lock_prepare(task
, calldata
);
4500 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4502 struct nfs4_lockdata
*data
= calldata
;
4504 dprintk("%s: begin!\n", __func__
);
4506 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4509 data
->rpc_status
= task
->tk_status
;
4510 if (data
->arg
.new_lock_owner
!= 0) {
4511 if (data
->rpc_status
== 0)
4512 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4516 if (data
->rpc_status
== 0) {
4517 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4518 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4519 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4522 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4525 static void nfs4_lock_release(void *calldata
)
4527 struct nfs4_lockdata
*data
= calldata
;
4529 dprintk("%s: begin!\n", __func__
);
4530 nfs_free_seqid(data
->arg
.open_seqid
);
4531 if (data
->cancelled
!= 0) {
4532 struct rpc_task
*task
;
4533 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4534 data
->arg
.lock_seqid
);
4536 rpc_put_task_async(task
);
4537 dprintk("%s: cancelling lock!\n", __func__
);
4539 nfs_free_seqid(data
->arg
.lock_seqid
);
4540 nfs4_put_lock_state(data
->lsp
);
4541 put_nfs_open_context(data
->ctx
);
4543 dprintk("%s: done!\n", __func__
);
4546 static const struct rpc_call_ops nfs4_lock_ops
= {
4547 .rpc_call_prepare
= nfs4_lock_prepare
,
4548 .rpc_call_done
= nfs4_lock_done
,
4549 .rpc_release
= nfs4_lock_release
,
4552 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4553 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4554 .rpc_call_done
= nfs4_lock_done
,
4555 .rpc_release
= nfs4_lock_release
,
4558 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4561 case -NFS4ERR_ADMIN_REVOKED
:
4562 case -NFS4ERR_BAD_STATEID
:
4563 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4564 if (new_lock_owner
!= 0 ||
4565 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4566 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4568 case -NFS4ERR_STALE_STATEID
:
4569 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4570 case -NFS4ERR_EXPIRED
:
4571 nfs4_schedule_lease_recovery(server
->nfs_client
);
4575 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4577 struct nfs4_lockdata
*data
;
4578 struct rpc_task
*task
;
4579 struct rpc_message msg
= {
4580 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4581 .rpc_cred
= state
->owner
->so_cred
,
4583 struct rpc_task_setup task_setup_data
= {
4584 .rpc_client
= NFS_CLIENT(state
->inode
),
4585 .rpc_message
= &msg
,
4586 .callback_ops
= &nfs4_lock_ops
,
4587 .workqueue
= nfsiod_workqueue
,
4588 .flags
= RPC_TASK_ASYNC
,
4592 dprintk("%s: begin!\n", __func__
);
4593 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4594 fl
->fl_u
.nfs4_fl
.owner
,
4595 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4599 data
->arg
.block
= 1;
4600 if (recovery_type
> NFS_LOCK_NEW
) {
4601 if (recovery_type
== NFS_LOCK_RECLAIM
)
4602 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4603 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4605 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4606 msg
.rpc_argp
= &data
->arg
;
4607 msg
.rpc_resp
= &data
->res
;
4608 task_setup_data
.callback_data
= data
;
4609 task
= rpc_run_task(&task_setup_data
);
4611 return PTR_ERR(task
);
4612 ret
= nfs4_wait_for_completion_rpc_task(task
);
4614 ret
= data
->rpc_status
;
4616 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4617 data
->arg
.new_lock_owner
, ret
);
4619 data
->cancelled
= 1;
4621 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4625 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4627 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4628 struct nfs4_exception exception
= {
4629 .inode
= state
->inode
,
4634 /* Cache the lock if possible... */
4635 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4637 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4638 if (err
!= -NFS4ERR_DELAY
)
4640 nfs4_handle_exception(server
, err
, &exception
);
4641 } while (exception
.retry
);
4645 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4647 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4648 struct nfs4_exception exception
= {
4649 .inode
= state
->inode
,
4653 err
= nfs4_set_lock_state(state
, request
);
4657 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4659 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4663 case -NFS4ERR_GRACE
:
4664 case -NFS4ERR_DELAY
:
4665 nfs4_handle_exception(server
, err
, &exception
);
4668 } while (exception
.retry
);
4673 #if defined(CONFIG_NFS_V4_1)
4674 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4676 int status
, ret
= NFS_OK
;
4677 struct nfs4_lock_state
*lsp
;
4678 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4680 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4681 if (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) {
4682 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4683 if (status
!= NFS_OK
) {
4684 nfs41_free_stateid(server
, &lsp
->ls_stateid
);
4685 lsp
->ls_flags
&= ~NFS_LOCK_INITIALIZED
;
4694 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4696 int status
= NFS_OK
;
4698 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4699 status
= nfs41_check_expired_locks(state
);
4700 if (status
== NFS_OK
)
4702 return nfs4_lock_expired(state
, request
);
4706 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4708 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4709 unsigned char fl_flags
= request
->fl_flags
;
4710 int status
= -ENOLCK
;
4712 if ((fl_flags
& FL_POSIX
) &&
4713 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4715 /* Is this a delegated open? */
4716 status
= nfs4_set_lock_state(state
, request
);
4719 request
->fl_flags
|= FL_ACCESS
;
4720 status
= do_vfs_lock(request
->fl_file
, request
);
4723 down_read(&nfsi
->rwsem
);
4724 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4725 /* Yes: cache locks! */
4726 /* ...but avoid races with delegation recall... */
4727 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4728 status
= do_vfs_lock(request
->fl_file
, request
);
4731 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4734 /* Note: we always want to sleep here! */
4735 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4736 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4737 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4738 "manager!\n", __func__
);
4740 up_read(&nfsi
->rwsem
);
4742 request
->fl_flags
= fl_flags
;
4746 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4748 struct nfs4_exception exception
= {
4750 .inode
= state
->inode
,
4755 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4756 if (err
== -NFS4ERR_DENIED
)
4758 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4760 } while (exception
.retry
);
4765 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4767 struct nfs_open_context
*ctx
;
4768 struct nfs4_state
*state
;
4769 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4772 /* verify open state */
4773 ctx
= nfs_file_open_context(filp
);
4776 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4779 if (IS_GETLK(cmd
)) {
4781 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4785 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4788 if (request
->fl_type
== F_UNLCK
) {
4790 return nfs4_proc_unlck(state
, cmd
, request
);
4797 * Don't rely on the VFS having checked the file open mode,
4798 * since it won't do this for flock() locks.
4800 switch (request
->fl_type
& (F_RDLCK
|F_WRLCK
|F_UNLCK
)) {
4802 if (!(filp
->f_mode
& FMODE_READ
))
4806 if (!(filp
->f_mode
& FMODE_WRITE
))
4811 status
= nfs4_proc_setlk(state
, cmd
, request
);
4812 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4814 timeout
= nfs4_set_lock_task_retry(timeout
);
4815 status
= -ERESTARTSYS
;
4818 } while(status
< 0);
4822 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4824 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4825 struct nfs4_exception exception
= { };
4828 err
= nfs4_set_lock_state(state
, fl
);
4832 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4835 printk(KERN_ERR
"NFS: %s: unhandled error "
4836 "%d.\n", __func__
, err
);
4840 case -NFS4ERR_EXPIRED
:
4841 nfs4_schedule_stateid_recovery(server
, state
);
4842 case -NFS4ERR_STALE_CLIENTID
:
4843 case -NFS4ERR_STALE_STATEID
:
4844 nfs4_schedule_lease_recovery(server
->nfs_client
);
4846 case -NFS4ERR_BADSESSION
:
4847 case -NFS4ERR_BADSLOT
:
4848 case -NFS4ERR_BAD_HIGH_SLOT
:
4849 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4850 case -NFS4ERR_DEADSESSION
:
4851 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
4855 * The show must go on: exit, but mark the
4856 * stateid as needing recovery.
4858 case -NFS4ERR_DELEG_REVOKED
:
4859 case -NFS4ERR_ADMIN_REVOKED
:
4860 case -NFS4ERR_BAD_STATEID
:
4861 case -NFS4ERR_OPENMODE
:
4862 nfs4_schedule_stateid_recovery(server
, state
);
4867 * User RPCSEC_GSS context has expired.
4868 * We cannot recover this stateid now, so
4869 * skip it and allow recovery thread to
4875 case -NFS4ERR_DENIED
:
4876 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4879 case -NFS4ERR_DELAY
:
4882 err
= nfs4_handle_exception(server
, err
, &exception
);
4883 } while (exception
.retry
);
4888 struct nfs_release_lockowner_data
{
4889 struct nfs4_lock_state
*lsp
;
4890 struct nfs_server
*server
;
4891 struct nfs_release_lockowner_args args
;
4894 static void nfs4_release_lockowner_release(void *calldata
)
4896 struct nfs_release_lockowner_data
*data
= calldata
;
4897 nfs4_free_lock_state(data
->server
, data
->lsp
);
4901 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4902 .rpc_release
= nfs4_release_lockowner_release
,
4905 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
4907 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4908 struct nfs_release_lockowner_data
*data
;
4909 struct rpc_message msg
= {
4910 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4913 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
4915 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4919 data
->server
= server
;
4920 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4921 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4922 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
4923 msg
.rpc_argp
= &data
->args
;
4924 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
4928 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4930 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
4931 const void *buf
, size_t buflen
,
4932 int flags
, int type
)
4934 if (strcmp(key
, "") != 0)
4937 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
4940 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
4941 void *buf
, size_t buflen
, int type
)
4943 if (strcmp(key
, "") != 0)
4946 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
4949 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
4950 size_t list_len
, const char *name
,
4951 size_t name_len
, int type
)
4953 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
4955 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4958 if (list
&& len
<= list_len
)
4959 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
4964 * nfs_fhget will use either the mounted_on_fileid or the fileid
4966 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4968 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
4969 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
4970 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4971 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
4974 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4975 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
4976 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4980 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
4981 const struct qstr
*name
,
4982 struct nfs4_fs_locations
*fs_locations
,
4985 struct nfs_server
*server
= NFS_SERVER(dir
);
4987 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4989 struct nfs4_fs_locations_arg args
= {
4990 .dir_fh
= NFS_FH(dir
),
4995 struct nfs4_fs_locations_res res
= {
4996 .fs_locations
= fs_locations
,
4998 struct rpc_message msg
= {
4999 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5005 dprintk("%s: start\n", __func__
);
5007 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5008 * is not supported */
5009 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5010 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5012 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5014 nfs_fattr_init(&fs_locations
->fattr
);
5015 fs_locations
->server
= server
;
5016 fs_locations
->nlocations
= 0;
5017 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5018 dprintk("%s: returned status = %d\n", __func__
, status
);
5022 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5023 const struct qstr
*name
,
5024 struct nfs4_fs_locations
*fs_locations
,
5027 struct nfs4_exception exception
= { };
5030 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5031 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5033 } while (exception
.retry
);
5037 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5040 struct nfs4_secinfo_arg args
= {
5041 .dir_fh
= NFS_FH(dir
),
5044 struct nfs4_secinfo_res res
= {
5047 struct rpc_message msg
= {
5048 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5053 dprintk("NFS call secinfo %s\n", name
->name
);
5054 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5055 dprintk("NFS reply secinfo: %d\n", status
);
5059 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5060 struct nfs4_secinfo_flavors
*flavors
)
5062 struct nfs4_exception exception
= { };
5065 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5066 _nfs4_proc_secinfo(dir
, name
, flavors
),
5068 } while (exception
.retry
);
5072 #ifdef CONFIG_NFS_V4_1
5074 * Check the exchange flags returned by the server for invalid flags, having
5075 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5078 static int nfs4_check_cl_exchange_flags(u32 flags
)
5080 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5082 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5083 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5085 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5089 return -NFS4ERR_INVAL
;
5093 nfs41_same_server_scope(struct server_scope
*a
, struct server_scope
*b
)
5095 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5096 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5103 * nfs4_proc_exchange_id()
5105 * Since the clientid has expired, all compounds using sessions
5106 * associated with the stale clientid will be returning
5107 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5108 * be in some phase of session reset.
5110 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5112 nfs4_verifier verifier
;
5113 struct nfs41_exchange_id_args args
= {
5114 .verifier
= &verifier
,
5116 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5118 struct nfs41_exchange_id_res res
= {
5122 struct rpc_message msg
= {
5123 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5129 dprintk("--> %s\n", __func__
);
5130 BUG_ON(clp
== NULL
);
5132 nfs4_construct_boot_verifier(clp
, &verifier
);
5134 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
5137 init_utsname()->nodename
,
5138 init_utsname()->domainname
,
5139 clp
->cl_rpcclient
->cl_auth
->au_flavor
);
5141 res
.server_scope
= kzalloc(sizeof(struct server_scope
), GFP_KERNEL
);
5142 if (unlikely(!res
.server_scope
)) {
5147 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_KERNEL
);
5148 if (unlikely(!res
.impl_id
)) {
5150 goto out_server_scope
;
5153 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5155 status
= nfs4_check_cl_exchange_flags(clp
->cl_exchange_flags
);
5158 /* use the most recent implementation id */
5159 kfree(clp
->impl_id
);
5160 clp
->impl_id
= res
.impl_id
;
5165 if (clp
->server_scope
&&
5166 !nfs41_same_server_scope(clp
->server_scope
,
5167 res
.server_scope
)) {
5168 dprintk("%s: server_scope mismatch detected\n",
5170 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5171 kfree(clp
->server_scope
);
5172 clp
->server_scope
= NULL
;
5175 if (!clp
->server_scope
) {
5176 clp
->server_scope
= res
.server_scope
;
5182 kfree(res
.server_scope
);
5185 dprintk("%s: Server Implementation ID: "
5186 "domain: %s, name: %s, date: %llu,%u\n",
5187 __func__
, clp
->impl_id
->domain
, clp
->impl_id
->name
,
5188 clp
->impl_id
->date
.seconds
,
5189 clp
->impl_id
->date
.nseconds
);
5190 dprintk("<-- %s status= %d\n", __func__
, status
);
5194 struct nfs4_get_lease_time_data
{
5195 struct nfs4_get_lease_time_args
*args
;
5196 struct nfs4_get_lease_time_res
*res
;
5197 struct nfs_client
*clp
;
5200 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5204 struct nfs4_get_lease_time_data
*data
=
5205 (struct nfs4_get_lease_time_data
*)calldata
;
5207 dprintk("--> %s\n", __func__
);
5208 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5209 /* just setup sequence, do not trigger session recovery
5210 since we're invoked within one */
5211 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
5212 &data
->args
->la_seq_args
,
5213 &data
->res
->lr_seq_res
, task
);
5215 BUG_ON(ret
== -EAGAIN
);
5216 rpc_call_start(task
);
5217 dprintk("<-- %s\n", __func__
);
5221 * Called from nfs4_state_manager thread for session setup, so don't recover
5222 * from sequence operation or clientid errors.
5224 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5226 struct nfs4_get_lease_time_data
*data
=
5227 (struct nfs4_get_lease_time_data
*)calldata
;
5229 dprintk("--> %s\n", __func__
);
5230 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5232 switch (task
->tk_status
) {
5233 case -NFS4ERR_DELAY
:
5234 case -NFS4ERR_GRACE
:
5235 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5236 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5237 task
->tk_status
= 0;
5239 case -NFS4ERR_RETRY_UNCACHED_REP
:
5240 rpc_restart_call_prepare(task
);
5243 dprintk("<-- %s\n", __func__
);
5246 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5247 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5248 .rpc_call_done
= nfs4_get_lease_time_done
,
5251 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5253 struct rpc_task
*task
;
5254 struct nfs4_get_lease_time_args args
;
5255 struct nfs4_get_lease_time_res res
= {
5256 .lr_fsinfo
= fsinfo
,
5258 struct nfs4_get_lease_time_data data
= {
5263 struct rpc_message msg
= {
5264 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5268 struct rpc_task_setup task_setup
= {
5269 .rpc_client
= clp
->cl_rpcclient
,
5270 .rpc_message
= &msg
,
5271 .callback_ops
= &nfs4_get_lease_time_ops
,
5272 .callback_data
= &data
,
5273 .flags
= RPC_TASK_TIMEOUT
,
5277 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5278 dprintk("--> %s\n", __func__
);
5279 task
= rpc_run_task(&task_setup
);
5282 status
= PTR_ERR(task
);
5284 status
= task
->tk_status
;
5287 dprintk("<-- %s return %d\n", __func__
, status
);
5292 static struct nfs4_slot
*nfs4_alloc_slots(u32 max_slots
, gfp_t gfp_flags
)
5294 return kcalloc(max_slots
, sizeof(struct nfs4_slot
), gfp_flags
);
5297 static void nfs4_add_and_init_slots(struct nfs4_slot_table
*tbl
,
5298 struct nfs4_slot
*new,
5302 struct nfs4_slot
*old
= NULL
;
5305 spin_lock(&tbl
->slot_tbl_lock
);
5309 tbl
->max_slots
= max_slots
;
5311 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
5312 for (i
= 0; i
< tbl
->max_slots
; i
++)
5313 tbl
->slots
[i
].seq_nr
= ivalue
;
5314 spin_unlock(&tbl
->slot_tbl_lock
);
5319 * (re)Initialise a slot table
5321 static int nfs4_realloc_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
5324 struct nfs4_slot
*new = NULL
;
5327 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
5328 max_reqs
, tbl
->max_slots
);
5330 /* Does the newly negotiated max_reqs match the existing slot table? */
5331 if (max_reqs
!= tbl
->max_slots
) {
5332 new = nfs4_alloc_slots(max_reqs
, GFP_NOFS
);
5338 nfs4_add_and_init_slots(tbl
, new, max_reqs
, ivalue
);
5339 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5340 tbl
, tbl
->slots
, tbl
->max_slots
);
5342 dprintk("<-- %s: return %d\n", __func__
, ret
);
5346 /* Destroy the slot table */
5347 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
5349 if (session
->fc_slot_table
.slots
!= NULL
) {
5350 kfree(session
->fc_slot_table
.slots
);
5351 session
->fc_slot_table
.slots
= NULL
;
5353 if (session
->bc_slot_table
.slots
!= NULL
) {
5354 kfree(session
->bc_slot_table
.slots
);
5355 session
->bc_slot_table
.slots
= NULL
;
5361 * Initialize or reset the forechannel and backchannel tables
5363 static int nfs4_setup_session_slot_tables(struct nfs4_session
*ses
)
5365 struct nfs4_slot_table
*tbl
;
5368 dprintk("--> %s\n", __func__
);
5370 tbl
= &ses
->fc_slot_table
;
5371 status
= nfs4_realloc_slot_table(tbl
, ses
->fc_attrs
.max_reqs
, 1);
5372 if (status
) /* -ENOMEM */
5375 tbl
= &ses
->bc_slot_table
;
5376 status
= nfs4_realloc_slot_table(tbl
, ses
->bc_attrs
.max_reqs
, 0);
5377 if (status
&& tbl
->slots
== NULL
)
5378 /* Fore and back channel share a connection so get
5379 * both slot tables or neither */
5380 nfs4_destroy_slot_tables(ses
);
5384 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5386 struct nfs4_session
*session
;
5387 struct nfs4_slot_table
*tbl
;
5389 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5393 tbl
= &session
->fc_slot_table
;
5394 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5395 spin_lock_init(&tbl
->slot_tbl_lock
);
5396 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5397 init_completion(&tbl
->complete
);
5399 tbl
= &session
->bc_slot_table
;
5400 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5401 spin_lock_init(&tbl
->slot_tbl_lock
);
5402 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5403 init_completion(&tbl
->complete
);
5405 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5411 void nfs4_destroy_session(struct nfs4_session
*session
)
5413 struct rpc_xprt
*xprt
;
5415 nfs4_proc_destroy_session(session
);
5418 xprt
= rcu_dereference(session
->clp
->cl_rpcclient
->cl_xprt
);
5420 dprintk("%s Destroy backchannel for xprt %p\n",
5422 xprt_destroy_backchannel(xprt
, NFS41_BC_MIN_CALLBACKS
);
5423 nfs4_destroy_slot_tables(session
);
5428 * Initialize the values to be used by the client in CREATE_SESSION
5429 * If nfs4_init_session set the fore channel request and response sizes,
5432 * Set the back channel max_resp_sz_cached to zero to force the client to
5433 * always set csa_cachethis to FALSE because the current implementation
5434 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5436 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5438 struct nfs4_session
*session
= args
->client
->cl_session
;
5439 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5440 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5443 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5445 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5446 /* Fore channel attributes */
5447 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5448 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5449 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5450 args
->fc_attrs
.max_reqs
= max_session_slots
;
5452 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5453 "max_ops=%u max_reqs=%u\n",
5455 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5456 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5458 /* Back channel attributes */
5459 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5460 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5461 args
->bc_attrs
.max_resp_sz_cached
= 0;
5462 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5463 args
->bc_attrs
.max_reqs
= 1;
5465 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5466 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5468 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5469 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5470 args
->bc_attrs
.max_reqs
);
5473 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5475 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5476 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5478 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5481 * Our requested max_ops is the minimum we need; we're not
5482 * prepared to break up compounds into smaller pieces than that.
5483 * So, no point even trying to continue if the server won't
5486 if (rcvd
->max_ops
< sent
->max_ops
)
5488 if (rcvd
->max_reqs
== 0)
5490 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5491 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5495 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5497 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5498 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5500 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5502 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5504 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5506 /* These would render the backchannel useless: */
5507 if (rcvd
->max_ops
!= sent
->max_ops
)
5509 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5514 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5515 struct nfs4_session
*session
)
5519 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5522 return nfs4_verify_back_channel_attrs(args
, session
);
5525 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
5527 struct nfs4_session
*session
= clp
->cl_session
;
5528 struct nfs41_create_session_args args
= {
5530 .cb_program
= NFS4_CALLBACK
,
5532 struct nfs41_create_session_res res
= {
5535 struct rpc_message msg
= {
5536 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5542 nfs4_init_channel_attrs(&args
);
5543 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5545 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5548 /* Verify the session's negotiated channel_attrs values */
5549 status
= nfs4_verify_channel_attrs(&args
, session
);
5551 /* Increment the clientid slot sequence id */
5559 * Issues a CREATE_SESSION operation to the server.
5560 * It is the responsibility of the caller to verify the session is
5561 * expired before calling this routine.
5563 int nfs4_proc_create_session(struct nfs_client
*clp
)
5567 struct nfs4_session
*session
= clp
->cl_session
;
5569 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5571 status
= _nfs4_proc_create_session(clp
);
5575 /* Init or reset the session slot tables */
5576 status
= nfs4_setup_session_slot_tables(session
);
5577 dprintk("slot table setup returned %d\n", status
);
5581 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5582 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5583 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5585 dprintk("<-- %s\n", __func__
);
5590 * Issue the over-the-wire RPC DESTROY_SESSION.
5591 * The caller must serialize access to this routine.
5593 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
5596 struct rpc_message msg
;
5598 dprintk("--> nfs4_proc_destroy_session\n");
5600 /* session is still being setup */
5601 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5604 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
5605 msg
.rpc_argp
= session
;
5606 msg
.rpc_resp
= NULL
;
5607 msg
.rpc_cred
= NULL
;
5608 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5612 "NFS: Got error %d from the server on DESTROY_SESSION. "
5613 "Session has been destroyed regardless...\n", status
);
5615 dprintk("<-- nfs4_proc_destroy_session\n");
5619 int nfs4_init_session(struct nfs_server
*server
)
5621 struct nfs_client
*clp
= server
->nfs_client
;
5622 struct nfs4_session
*session
;
5623 unsigned int rsize
, wsize
;
5626 if (!nfs4_has_session(clp
))
5629 session
= clp
->cl_session
;
5630 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5633 rsize
= server
->rsize
;
5635 rsize
= NFS_MAX_FILE_IO_SIZE
;
5636 wsize
= server
->wsize
;
5638 wsize
= NFS_MAX_FILE_IO_SIZE
;
5640 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5641 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5643 ret
= nfs4_recover_expired_lease(server
);
5645 ret
= nfs4_check_client_ready(clp
);
5649 int nfs4_init_ds_session(struct nfs_client
*clp
)
5651 struct nfs4_session
*session
= clp
->cl_session
;
5654 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5657 ret
= nfs4_client_recover_expired_lease(clp
);
5659 /* Test for the DS role */
5660 if (!is_ds_client(clp
))
5663 ret
= nfs4_check_client_ready(clp
);
5667 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5671 * Renew the cl_session lease.
5673 struct nfs4_sequence_data
{
5674 struct nfs_client
*clp
;
5675 struct nfs4_sequence_args args
;
5676 struct nfs4_sequence_res res
;
5679 static void nfs41_sequence_release(void *data
)
5681 struct nfs4_sequence_data
*calldata
= data
;
5682 struct nfs_client
*clp
= calldata
->clp
;
5684 if (atomic_read(&clp
->cl_count
) > 1)
5685 nfs4_schedule_state_renewal(clp
);
5686 nfs_put_client(clp
);
5690 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5692 switch(task
->tk_status
) {
5693 case -NFS4ERR_DELAY
:
5694 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5697 nfs4_schedule_lease_recovery(clp
);
5702 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5704 struct nfs4_sequence_data
*calldata
= data
;
5705 struct nfs_client
*clp
= calldata
->clp
;
5707 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5710 if (task
->tk_status
< 0) {
5711 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5712 if (atomic_read(&clp
->cl_count
) == 1)
5715 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5716 rpc_restart_call_prepare(task
);
5720 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5722 dprintk("<-- %s\n", __func__
);
5725 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5727 struct nfs4_sequence_data
*calldata
= data
;
5728 struct nfs_client
*clp
= calldata
->clp
;
5729 struct nfs4_sequence_args
*args
;
5730 struct nfs4_sequence_res
*res
;
5732 args
= task
->tk_msg
.rpc_argp
;
5733 res
= task
->tk_msg
.rpc_resp
;
5735 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
))
5737 rpc_call_start(task
);
5740 static const struct rpc_call_ops nfs41_sequence_ops
= {
5741 .rpc_call_done
= nfs41_sequence_call_done
,
5742 .rpc_call_prepare
= nfs41_sequence_prepare
,
5743 .rpc_release
= nfs41_sequence_release
,
5746 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5748 struct nfs4_sequence_data
*calldata
;
5749 struct rpc_message msg
= {
5750 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5753 struct rpc_task_setup task_setup_data
= {
5754 .rpc_client
= clp
->cl_rpcclient
,
5755 .rpc_message
= &msg
,
5756 .callback_ops
= &nfs41_sequence_ops
,
5757 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5760 if (!atomic_inc_not_zero(&clp
->cl_count
))
5761 return ERR_PTR(-EIO
);
5762 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5763 if (calldata
== NULL
) {
5764 nfs_put_client(clp
);
5765 return ERR_PTR(-ENOMEM
);
5767 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
5768 msg
.rpc_argp
= &calldata
->args
;
5769 msg
.rpc_resp
= &calldata
->res
;
5770 calldata
->clp
= clp
;
5771 task_setup_data
.callback_data
= calldata
;
5773 return rpc_run_task(&task_setup_data
);
5776 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
5778 struct rpc_task
*task
;
5781 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
5783 task
= _nfs41_proc_sequence(clp
, cred
);
5785 ret
= PTR_ERR(task
);
5787 rpc_put_task_async(task
);
5788 dprintk("<-- %s status=%d\n", __func__
, ret
);
5792 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5794 struct rpc_task
*task
;
5797 task
= _nfs41_proc_sequence(clp
, cred
);
5799 ret
= PTR_ERR(task
);
5802 ret
= rpc_wait_for_completion_task(task
);
5804 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5806 if (task
->tk_status
== 0)
5807 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5808 ret
= task
->tk_status
;
5812 dprintk("<-- %s status=%d\n", __func__
, ret
);
5816 struct nfs4_reclaim_complete_data
{
5817 struct nfs_client
*clp
;
5818 struct nfs41_reclaim_complete_args arg
;
5819 struct nfs41_reclaim_complete_res res
;
5822 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5824 struct nfs4_reclaim_complete_data
*calldata
= data
;
5826 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5827 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5828 &calldata
->arg
.seq_args
,
5829 &calldata
->res
.seq_res
, task
))
5832 rpc_call_start(task
);
5835 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5837 switch(task
->tk_status
) {
5839 case -NFS4ERR_COMPLETE_ALREADY
:
5840 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5842 case -NFS4ERR_DELAY
:
5843 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5845 case -NFS4ERR_RETRY_UNCACHED_REP
:
5848 nfs4_schedule_lease_recovery(clp
);
5853 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5855 struct nfs4_reclaim_complete_data
*calldata
= data
;
5856 struct nfs_client
*clp
= calldata
->clp
;
5857 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5859 dprintk("--> %s\n", __func__
);
5860 if (!nfs41_sequence_done(task
, res
))
5863 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5864 rpc_restart_call_prepare(task
);
5867 dprintk("<-- %s\n", __func__
);
5870 static void nfs4_free_reclaim_complete_data(void *data
)
5872 struct nfs4_reclaim_complete_data
*calldata
= data
;
5877 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5878 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5879 .rpc_call_done
= nfs4_reclaim_complete_done
,
5880 .rpc_release
= nfs4_free_reclaim_complete_data
,
5884 * Issue a global reclaim complete.
5886 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5888 struct nfs4_reclaim_complete_data
*calldata
;
5889 struct rpc_task
*task
;
5890 struct rpc_message msg
= {
5891 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5893 struct rpc_task_setup task_setup_data
= {
5894 .rpc_client
= clp
->cl_rpcclient
,
5895 .rpc_message
= &msg
,
5896 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5897 .flags
= RPC_TASK_ASYNC
,
5899 int status
= -ENOMEM
;
5901 dprintk("--> %s\n", __func__
);
5902 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5903 if (calldata
== NULL
)
5905 calldata
->clp
= clp
;
5906 calldata
->arg
.one_fs
= 0;
5908 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
5909 msg
.rpc_argp
= &calldata
->arg
;
5910 msg
.rpc_resp
= &calldata
->res
;
5911 task_setup_data
.callback_data
= calldata
;
5912 task
= rpc_run_task(&task_setup_data
);
5914 status
= PTR_ERR(task
);
5917 status
= nfs4_wait_for_completion_rpc_task(task
);
5919 status
= task
->tk_status
;
5923 dprintk("<-- %s status=%d\n", __func__
, status
);
5928 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
5930 struct nfs4_layoutget
*lgp
= calldata
;
5931 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5933 dprintk("--> %s\n", __func__
);
5934 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
5935 * right now covering the LAYOUTGET we are about to send.
5936 * However, that is not so catastrophic, and there seems
5937 * to be no way to prevent it completely.
5939 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
5940 &lgp
->res
.seq_res
, task
))
5942 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
5943 NFS_I(lgp
->args
.inode
)->layout
,
5944 lgp
->args
.ctx
->state
)) {
5945 rpc_exit(task
, NFS4_OK
);
5948 rpc_call_start(task
);
5951 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
5953 struct nfs4_layoutget
*lgp
= calldata
;
5954 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5956 dprintk("--> %s\n", __func__
);
5958 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
5961 switch (task
->tk_status
) {
5964 case -NFS4ERR_LAYOUTTRYLATER
:
5965 case -NFS4ERR_RECALLCONFLICT
:
5966 task
->tk_status
= -NFS4ERR_DELAY
;
5969 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5970 rpc_restart_call_prepare(task
);
5974 dprintk("<-- %s\n", __func__
);
5977 static void nfs4_layoutget_release(void *calldata
)
5979 struct nfs4_layoutget
*lgp
= calldata
;
5981 dprintk("--> %s\n", __func__
);
5982 put_nfs_open_context(lgp
->args
.ctx
);
5984 dprintk("<-- %s\n", __func__
);
5987 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
5988 .rpc_call_prepare
= nfs4_layoutget_prepare
,
5989 .rpc_call_done
= nfs4_layoutget_done
,
5990 .rpc_release
= nfs4_layoutget_release
,
5993 int nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
)
5995 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5996 struct rpc_task
*task
;
5997 struct rpc_message msg
= {
5998 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
5999 .rpc_argp
= &lgp
->args
,
6000 .rpc_resp
= &lgp
->res
,
6002 struct rpc_task_setup task_setup_data
= {
6003 .rpc_client
= server
->client
,
6004 .rpc_message
= &msg
,
6005 .callback_ops
= &nfs4_layoutget_call_ops
,
6006 .callback_data
= lgp
,
6007 .flags
= RPC_TASK_ASYNC
,
6011 dprintk("--> %s\n", __func__
);
6013 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6014 lgp
->res
.seq_res
.sr_slot
= NULL
;
6015 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6016 task
= rpc_run_task(&task_setup_data
);
6018 return PTR_ERR(task
);
6019 status
= nfs4_wait_for_completion_rpc_task(task
);
6021 status
= task
->tk_status
;
6023 status
= pnfs_layout_process(lgp
);
6025 dprintk("<-- %s status=%d\n", __func__
, status
);
6030 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6032 struct nfs4_layoutreturn
*lrp
= calldata
;
6034 dprintk("--> %s\n", __func__
);
6035 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
6036 &lrp
->res
.seq_res
, task
))
6038 rpc_call_start(task
);
6041 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6043 struct nfs4_layoutreturn
*lrp
= calldata
;
6044 struct nfs_server
*server
;
6045 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6047 dprintk("--> %s\n", __func__
);
6049 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
6052 server
= NFS_SERVER(lrp
->args
.inode
);
6053 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6054 rpc_restart_call_prepare(task
);
6057 spin_lock(&lo
->plh_inode
->i_lock
);
6058 if (task
->tk_status
== 0) {
6059 if (lrp
->res
.lrs_present
) {
6060 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6062 BUG_ON(!list_empty(&lo
->plh_segs
));
6064 lo
->plh_block_lgets
--;
6065 spin_unlock(&lo
->plh_inode
->i_lock
);
6066 dprintk("<-- %s\n", __func__
);
6069 static void nfs4_layoutreturn_release(void *calldata
)
6071 struct nfs4_layoutreturn
*lrp
= calldata
;
6073 dprintk("--> %s\n", __func__
);
6074 put_layout_hdr(lrp
->args
.layout
);
6076 dprintk("<-- %s\n", __func__
);
6079 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6080 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6081 .rpc_call_done
= nfs4_layoutreturn_done
,
6082 .rpc_release
= nfs4_layoutreturn_release
,
6085 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6087 struct rpc_task
*task
;
6088 struct rpc_message msg
= {
6089 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6090 .rpc_argp
= &lrp
->args
,
6091 .rpc_resp
= &lrp
->res
,
6093 struct rpc_task_setup task_setup_data
= {
6094 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6095 .rpc_message
= &msg
,
6096 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6097 .callback_data
= lrp
,
6101 dprintk("--> %s\n", __func__
);
6102 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6103 task
= rpc_run_task(&task_setup_data
);
6105 return PTR_ERR(task
);
6106 status
= task
->tk_status
;
6107 dprintk("<-- %s status=%d\n", __func__
, status
);
6113 * Retrieve the list of Data Server devices from the MDS.
6115 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6116 const struct nfs_fh
*fh
,
6117 struct pnfs_devicelist
*devlist
)
6119 struct nfs4_getdevicelist_args args
= {
6121 .layoutclass
= server
->pnfs_curr_ld
->id
,
6123 struct nfs4_getdevicelist_res res
= {
6126 struct rpc_message msg
= {
6127 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6133 dprintk("--> %s\n", __func__
);
6134 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6136 dprintk("<-- %s status=%d\n", __func__
, status
);
6140 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6141 const struct nfs_fh
*fh
,
6142 struct pnfs_devicelist
*devlist
)
6144 struct nfs4_exception exception
= { };
6148 err
= nfs4_handle_exception(server
,
6149 _nfs4_getdevicelist(server
, fh
, devlist
),
6151 } while (exception
.retry
);
6153 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6154 err
, devlist
->num_devs
);
6158 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6161 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6163 struct nfs4_getdeviceinfo_args args
= {
6166 struct nfs4_getdeviceinfo_res res
= {
6169 struct rpc_message msg
= {
6170 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6176 dprintk("--> %s\n", __func__
);
6177 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6178 dprintk("<-- %s status=%d\n", __func__
, status
);
6183 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6185 struct nfs4_exception exception
= { };
6189 err
= nfs4_handle_exception(server
,
6190 _nfs4_proc_getdeviceinfo(server
, pdev
),
6192 } while (exception
.retry
);
6195 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6197 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6199 struct nfs4_layoutcommit_data
*data
= calldata
;
6200 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6202 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
6203 &data
->res
.seq_res
, task
))
6205 rpc_call_start(task
);
6209 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6211 struct nfs4_layoutcommit_data
*data
= calldata
;
6212 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6214 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6217 switch (task
->tk_status
) { /* Just ignore these failures */
6218 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6219 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6220 case -NFS4ERR_BADLAYOUT
: /* no layout */
6221 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6222 task
->tk_status
= 0;
6225 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6229 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6230 rpc_restart_call_prepare(task
);
6236 static void nfs4_layoutcommit_release(void *calldata
)
6238 struct nfs4_layoutcommit_data
*data
= calldata
;
6239 struct pnfs_layout_segment
*lseg
, *tmp
;
6240 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
6242 pnfs_cleanup_layoutcommit(data
);
6243 /* Matched by references in pnfs_set_layoutcommit */
6244 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
6245 list_del_init(&lseg
->pls_lc_list
);
6246 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
6251 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
6252 smp_mb__after_clear_bit();
6253 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
6255 put_rpccred(data
->cred
);
6259 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6260 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6261 .rpc_call_done
= nfs4_layoutcommit_done
,
6262 .rpc_release
= nfs4_layoutcommit_release
,
6266 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6268 struct rpc_message msg
= {
6269 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6270 .rpc_argp
= &data
->args
,
6271 .rpc_resp
= &data
->res
,
6272 .rpc_cred
= data
->cred
,
6274 struct rpc_task_setup task_setup_data
= {
6275 .task
= &data
->task
,
6276 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6277 .rpc_message
= &msg
,
6278 .callback_ops
= &nfs4_layoutcommit_ops
,
6279 .callback_data
= data
,
6280 .flags
= RPC_TASK_ASYNC
,
6282 struct rpc_task
*task
;
6285 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6286 "lbw: %llu inode %lu\n",
6287 data
->task
.tk_pid
, sync
,
6288 data
->args
.lastbytewritten
,
6289 data
->args
.inode
->i_ino
);
6291 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6292 task
= rpc_run_task(&task_setup_data
);
6294 return PTR_ERR(task
);
6297 status
= nfs4_wait_for_completion_rpc_task(task
);
6300 status
= task
->tk_status
;
6302 dprintk("%s: status %d\n", __func__
, status
);
6308 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6309 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6311 struct nfs41_secinfo_no_name_args args
= {
6312 .style
= SECINFO_STYLE_CURRENT_FH
,
6314 struct nfs4_secinfo_res res
= {
6317 struct rpc_message msg
= {
6318 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6322 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6326 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6327 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6329 struct nfs4_exception exception
= { };
6332 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6335 case -NFS4ERR_WRONGSEC
:
6336 case -NFS4ERR_NOTSUPP
:
6339 err
= nfs4_handle_exception(server
, err
, &exception
);
6341 } while (exception
.retry
);
6347 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6348 struct nfs_fsinfo
*info
)
6352 rpc_authflavor_t flavor
;
6353 struct nfs4_secinfo_flavors
*flavors
;
6355 page
= alloc_page(GFP_KERNEL
);
6361 flavors
= page_address(page
);
6362 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6365 * Fall back on "guess and check" method if
6366 * the server doesn't support SECINFO_NO_NAME
6368 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6369 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6375 flavor
= nfs_find_best_sec(flavors
);
6377 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6387 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6390 struct nfs41_test_stateid_args args
= {
6393 struct nfs41_test_stateid_res res
;
6394 struct rpc_message msg
= {
6395 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6400 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6401 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6403 if (status
== NFS_OK
)
6408 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6410 struct nfs4_exception exception
= { };
6413 err
= nfs4_handle_exception(server
,
6414 _nfs41_test_stateid(server
, stateid
),
6416 } while (exception
.retry
);
6420 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6422 struct nfs41_free_stateid_args args
= {
6425 struct nfs41_free_stateid_res res
;
6426 struct rpc_message msg
= {
6427 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6432 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6433 return nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6436 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6438 struct nfs4_exception exception
= { };
6441 err
= nfs4_handle_exception(server
,
6442 _nfs4_free_stateid(server
, stateid
),
6444 } while (exception
.retry
);
6448 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6449 const nfs4_stateid
*s2
)
6451 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6454 if (s1
->seqid
== s2
->seqid
)
6456 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6462 #endif /* CONFIG_NFS_V4_1 */
6464 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6465 const nfs4_stateid
*s2
)
6467 return nfs4_stateid_match(s1
, s2
);
6471 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6472 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6473 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6474 .recover_open
= nfs4_open_reclaim
,
6475 .recover_lock
= nfs4_lock_reclaim
,
6476 .establish_clid
= nfs4_init_clientid
,
6477 .get_clid_cred
= nfs4_get_setclientid_cred
,
6480 #if defined(CONFIG_NFS_V4_1)
6481 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6482 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6483 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6484 .recover_open
= nfs4_open_reclaim
,
6485 .recover_lock
= nfs4_lock_reclaim
,
6486 .establish_clid
= nfs41_init_clientid
,
6487 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6488 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6490 #endif /* CONFIG_NFS_V4_1 */
6492 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6493 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6494 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6495 .recover_open
= nfs4_open_expired
,
6496 .recover_lock
= nfs4_lock_expired
,
6497 .establish_clid
= nfs4_init_clientid
,
6498 .get_clid_cred
= nfs4_get_setclientid_cred
,
6501 #if defined(CONFIG_NFS_V4_1)
6502 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6503 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6504 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6505 .recover_open
= nfs41_open_expired
,
6506 .recover_lock
= nfs41_lock_expired
,
6507 .establish_clid
= nfs41_init_clientid
,
6508 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6510 #endif /* CONFIG_NFS_V4_1 */
6512 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6513 .sched_state_renewal
= nfs4_proc_async_renew
,
6514 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6515 .renew_lease
= nfs4_proc_renew
,
6518 #if defined(CONFIG_NFS_V4_1)
6519 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6520 .sched_state_renewal
= nfs41_proc_async_sequence
,
6521 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6522 .renew_lease
= nfs4_proc_sequence
,
6526 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6528 .call_sync
= _nfs4_call_sync
,
6529 .match_stateid
= nfs4_match_stateid
,
6530 .find_root_sec
= nfs4_find_root_sec
,
6531 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6532 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6533 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6536 #if defined(CONFIG_NFS_V4_1)
6537 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6539 .call_sync
= _nfs4_call_sync_session
,
6540 .match_stateid
= nfs41_match_stateid
,
6541 .find_root_sec
= nfs41_find_root_sec
,
6542 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6543 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6544 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6548 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6549 [0] = &nfs_v4_0_minor_ops
,
6550 #if defined(CONFIG_NFS_V4_1)
6551 [1] = &nfs_v4_1_minor_ops
,
6555 static const struct inode_operations nfs4_file_inode_operations
= {
6556 .permission
= nfs_permission
,
6557 .getattr
= nfs_getattr
,
6558 .setattr
= nfs_setattr
,
6559 .getxattr
= generic_getxattr
,
6560 .setxattr
= generic_setxattr
,
6561 .listxattr
= generic_listxattr
,
6562 .removexattr
= generic_removexattr
,
6565 const struct nfs_rpc_ops nfs_v4_clientops
= {
6566 .version
= 4, /* protocol version */
6567 .dentry_ops
= &nfs4_dentry_operations
,
6568 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6569 .file_inode_ops
= &nfs4_file_inode_operations
,
6570 .file_ops
= &nfs4_file_operations
,
6571 .getroot
= nfs4_proc_get_root
,
6572 .getattr
= nfs4_proc_getattr
,
6573 .setattr
= nfs4_proc_setattr
,
6574 .lookup
= nfs4_proc_lookup
,
6575 .access
= nfs4_proc_access
,
6576 .readlink
= nfs4_proc_readlink
,
6577 .create
= nfs4_proc_create
,
6578 .remove
= nfs4_proc_remove
,
6579 .unlink_setup
= nfs4_proc_unlink_setup
,
6580 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
6581 .unlink_done
= nfs4_proc_unlink_done
,
6582 .rename
= nfs4_proc_rename
,
6583 .rename_setup
= nfs4_proc_rename_setup
,
6584 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
6585 .rename_done
= nfs4_proc_rename_done
,
6586 .link
= nfs4_proc_link
,
6587 .symlink
= nfs4_proc_symlink
,
6588 .mkdir
= nfs4_proc_mkdir
,
6589 .rmdir
= nfs4_proc_remove
,
6590 .readdir
= nfs4_proc_readdir
,
6591 .mknod
= nfs4_proc_mknod
,
6592 .statfs
= nfs4_proc_statfs
,
6593 .fsinfo
= nfs4_proc_fsinfo
,
6594 .pathconf
= nfs4_proc_pathconf
,
6595 .set_capabilities
= nfs4_server_capabilities
,
6596 .decode_dirent
= nfs4_decode_dirent
,
6597 .read_setup
= nfs4_proc_read_setup
,
6598 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
6599 .read_done
= nfs4_read_done
,
6600 .write_setup
= nfs4_proc_write_setup
,
6601 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
6602 .write_done
= nfs4_write_done
,
6603 .commit_setup
= nfs4_proc_commit_setup
,
6604 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
6605 .commit_done
= nfs4_commit_done
,
6606 .lock
= nfs4_proc_lock
,
6607 .clear_acl_cache
= nfs4_zap_acl_attr
,
6608 .close_context
= nfs4_close_context
,
6609 .open_context
= nfs4_atomic_open
,
6610 .init_client
= nfs4_init_client
,
6611 .secinfo
= nfs4_proc_secinfo
,
6614 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6615 .prefix
= XATTR_NAME_NFSV4_ACL
,
6616 .list
= nfs4_xattr_list_nfs4_acl
,
6617 .get
= nfs4_xattr_get_nfs4_acl
,
6618 .set
= nfs4_xattr_set_nfs4_acl
,
6621 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6622 &nfs4_xattr_nfs4_acl_handler
,
6626 module_param(max_session_slots
, ushort
, 0644);
6627 MODULE_PARM_DESC(max_session_slots
, "Maximum number of outstanding NFSv4.1 "
6628 "requests the client will negotiate");