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
= sp
->so_seqid
.owner_id
;
842 p
->o_arg
.name
= &dentry
->d_name
;
843 p
->o_arg
.server
= server
;
844 p
->o_arg
.bitmask
= server
->attr_bitmask
;
845 p
->o_arg
.dir_bitmask
= server
->cache_consistency_bitmask
;
846 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
847 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
850 p
->o_arg
.u
.attrs
= &p
->attrs
;
851 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
854 verf
[1] = current
->pid
;
855 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
856 sizeof(p
->o_arg
.u
.verifier
.data
));
858 p
->c_arg
.fh
= &p
->o_res
.fh
;
859 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
860 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
861 nfs4_init_opendata_res(p
);
871 static void nfs4_opendata_free(struct kref
*kref
)
873 struct nfs4_opendata
*p
= container_of(kref
,
874 struct nfs4_opendata
, kref
);
875 struct super_block
*sb
= p
->dentry
->d_sb
;
877 nfs_free_seqid(p
->o_arg
.seqid
);
878 if (p
->state
!= NULL
)
879 nfs4_put_open_state(p
->state
);
880 nfs4_put_state_owner(p
->owner
);
884 nfs_fattr_free_names(&p
->f_attr
);
888 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
891 kref_put(&p
->kref
, nfs4_opendata_free
);
894 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
898 ret
= rpc_wait_for_completion_task(task
);
902 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
906 if (open_mode
& (O_EXCL
|O_TRUNC
))
908 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
910 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
911 && state
->n_rdonly
!= 0;
914 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
915 && state
->n_wronly
!= 0;
917 case FMODE_READ
|FMODE_WRITE
:
918 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
919 && state
->n_rdwr
!= 0;
925 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
927 if (delegation
== NULL
)
929 if ((delegation
->type
& fmode
) != fmode
)
931 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
933 nfs_mark_delegation_referenced(delegation
);
937 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
946 case FMODE_READ
|FMODE_WRITE
:
949 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
952 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
954 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
955 nfs4_stateid_copy(&state
->stateid
, stateid
);
956 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
959 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
962 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
964 case FMODE_READ
|FMODE_WRITE
:
965 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
969 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
971 write_seqlock(&state
->seqlock
);
972 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
973 write_sequnlock(&state
->seqlock
);
976 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
979 * Protect the call to nfs4_state_set_mode_locked and
980 * serialise the stateid update
982 write_seqlock(&state
->seqlock
);
983 if (deleg_stateid
!= NULL
) {
984 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
985 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
987 if (open_stateid
!= NULL
)
988 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
989 write_sequnlock(&state
->seqlock
);
990 spin_lock(&state
->owner
->so_lock
);
991 update_open_stateflags(state
, fmode
);
992 spin_unlock(&state
->owner
->so_lock
);
995 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
997 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
998 struct nfs_delegation
*deleg_cur
;
1001 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1004 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1005 if (deleg_cur
== NULL
)
1008 spin_lock(&deleg_cur
->lock
);
1009 if (nfsi
->delegation
!= deleg_cur
||
1010 (deleg_cur
->type
& fmode
) != fmode
)
1011 goto no_delegation_unlock
;
1013 if (delegation
== NULL
)
1014 delegation
= &deleg_cur
->stateid
;
1015 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1016 goto no_delegation_unlock
;
1018 nfs_mark_delegation_referenced(deleg_cur
);
1019 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1021 no_delegation_unlock
:
1022 spin_unlock(&deleg_cur
->lock
);
1026 if (!ret
&& open_stateid
!= NULL
) {
1027 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1035 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1037 struct nfs_delegation
*delegation
;
1040 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1041 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1046 nfs_inode_return_delegation(inode
);
1049 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1051 struct nfs4_state
*state
= opendata
->state
;
1052 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1053 struct nfs_delegation
*delegation
;
1054 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1055 fmode_t fmode
= opendata
->o_arg
.fmode
;
1056 nfs4_stateid stateid
;
1060 if (can_open_cached(state
, fmode
, open_mode
)) {
1061 spin_lock(&state
->owner
->so_lock
);
1062 if (can_open_cached(state
, fmode
, open_mode
)) {
1063 update_open_stateflags(state
, fmode
);
1064 spin_unlock(&state
->owner
->so_lock
);
1065 goto out_return_state
;
1067 spin_unlock(&state
->owner
->so_lock
);
1070 delegation
= rcu_dereference(nfsi
->delegation
);
1071 if (!can_open_delegated(delegation
, fmode
)) {
1075 /* Save the delegation */
1076 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1078 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1083 /* Try to update the stateid using the delegation */
1084 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1085 goto out_return_state
;
1088 return ERR_PTR(ret
);
1090 atomic_inc(&state
->count
);
1094 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1096 struct inode
*inode
;
1097 struct nfs4_state
*state
= NULL
;
1098 struct nfs_delegation
*delegation
;
1101 if (!data
->rpc_done
) {
1102 state
= nfs4_try_open_cached(data
);
1107 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1109 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1110 ret
= PTR_ERR(inode
);
1114 state
= nfs4_get_open_state(inode
, data
->owner
);
1117 if (data
->o_res
.delegation_type
!= 0) {
1118 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
1119 int delegation_flags
= 0;
1122 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1124 delegation_flags
= delegation
->flags
;
1126 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1127 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1128 "returning a delegation for "
1129 "OPEN(CLAIM_DELEGATE_CUR)\n",
1131 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1132 nfs_inode_set_delegation(state
->inode
,
1133 data
->owner
->so_cred
,
1136 nfs_inode_reclaim_delegation(state
->inode
,
1137 data
->owner
->so_cred
,
1141 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1149 return ERR_PTR(ret
);
1152 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1154 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1155 struct nfs_open_context
*ctx
;
1157 spin_lock(&state
->inode
->i_lock
);
1158 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1159 if (ctx
->state
!= state
)
1161 get_nfs_open_context(ctx
);
1162 spin_unlock(&state
->inode
->i_lock
);
1165 spin_unlock(&state
->inode
->i_lock
);
1166 return ERR_PTR(-ENOENT
);
1169 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1171 struct nfs4_opendata
*opendata
;
1173 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1174 if (opendata
== NULL
)
1175 return ERR_PTR(-ENOMEM
);
1176 opendata
->state
= state
;
1177 atomic_inc(&state
->count
);
1181 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1183 struct nfs4_state
*newstate
;
1186 opendata
->o_arg
.open_flags
= 0;
1187 opendata
->o_arg
.fmode
= fmode
;
1188 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1189 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1190 nfs4_init_opendata_res(opendata
);
1191 ret
= _nfs4_recover_proc_open(opendata
);
1194 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1195 if (IS_ERR(newstate
))
1196 return PTR_ERR(newstate
);
1197 nfs4_close_state(newstate
, fmode
);
1202 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1204 struct nfs4_state
*newstate
;
1207 /* memory barrier prior to reading state->n_* */
1208 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1210 if (state
->n_rdwr
!= 0) {
1211 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1212 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1215 if (newstate
!= state
)
1218 if (state
->n_wronly
!= 0) {
1219 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1220 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1223 if (newstate
!= state
)
1226 if (state
->n_rdonly
!= 0) {
1227 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1228 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1231 if (newstate
!= state
)
1235 * We may have performed cached opens for all three recoveries.
1236 * Check if we need to update the current stateid.
1238 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1239 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1240 write_seqlock(&state
->seqlock
);
1241 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1242 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1243 write_sequnlock(&state
->seqlock
);
1250 * reclaim state on the server after a reboot.
1252 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1254 struct nfs_delegation
*delegation
;
1255 struct nfs4_opendata
*opendata
;
1256 fmode_t delegation_type
= 0;
1259 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1260 if (IS_ERR(opendata
))
1261 return PTR_ERR(opendata
);
1262 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1263 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1265 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1266 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1267 delegation_type
= delegation
->type
;
1269 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1270 status
= nfs4_open_recover(opendata
, state
);
1271 nfs4_opendata_put(opendata
);
1275 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1277 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1278 struct nfs4_exception exception
= { };
1281 err
= _nfs4_do_open_reclaim(ctx
, state
);
1282 if (err
!= -NFS4ERR_DELAY
)
1284 nfs4_handle_exception(server
, err
, &exception
);
1285 } while (exception
.retry
);
1289 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1291 struct nfs_open_context
*ctx
;
1294 ctx
= nfs4_state_find_open_context(state
);
1296 return PTR_ERR(ctx
);
1297 ret
= nfs4_do_open_reclaim(ctx
, state
);
1298 put_nfs_open_context(ctx
);
1302 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1304 struct nfs4_opendata
*opendata
;
1307 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1308 if (IS_ERR(opendata
))
1309 return PTR_ERR(opendata
);
1310 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1311 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1312 ret
= nfs4_open_recover(opendata
, state
);
1313 nfs4_opendata_put(opendata
);
1317 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1319 struct nfs4_exception exception
= { };
1320 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1323 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1329 case -NFS4ERR_BADSESSION
:
1330 case -NFS4ERR_BADSLOT
:
1331 case -NFS4ERR_BAD_HIGH_SLOT
:
1332 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1333 case -NFS4ERR_DEADSESSION
:
1334 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
1336 case -NFS4ERR_STALE_CLIENTID
:
1337 case -NFS4ERR_STALE_STATEID
:
1338 case -NFS4ERR_EXPIRED
:
1339 /* Don't recall a delegation if it was lost */
1340 nfs4_schedule_lease_recovery(server
->nfs_client
);
1344 * The show must go on: exit, but mark the
1345 * stateid as needing recovery.
1347 case -NFS4ERR_DELEG_REVOKED
:
1348 case -NFS4ERR_ADMIN_REVOKED
:
1349 case -NFS4ERR_BAD_STATEID
:
1350 nfs_inode_find_state_and_recover(state
->inode
,
1352 nfs4_schedule_stateid_recovery(server
, state
);
1355 * User RPCSEC_GSS context has expired.
1356 * We cannot recover this stateid now, so
1357 * skip it and allow recovery thread to
1364 err
= nfs4_handle_exception(server
, err
, &exception
);
1365 } while (exception
.retry
);
1370 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1372 struct nfs4_opendata
*data
= calldata
;
1374 data
->rpc_status
= task
->tk_status
;
1375 if (data
->rpc_status
== 0) {
1376 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1377 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1378 renew_lease(data
->o_res
.server
, data
->timestamp
);
1383 static void nfs4_open_confirm_release(void *calldata
)
1385 struct nfs4_opendata
*data
= calldata
;
1386 struct nfs4_state
*state
= NULL
;
1388 /* If this request hasn't been cancelled, do nothing */
1389 if (data
->cancelled
== 0)
1391 /* In case of error, no cleanup! */
1392 if (!data
->rpc_done
)
1394 state
= nfs4_opendata_to_nfs4_state(data
);
1396 nfs4_close_state(state
, data
->o_arg
.fmode
);
1398 nfs4_opendata_put(data
);
1401 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1402 .rpc_call_done
= nfs4_open_confirm_done
,
1403 .rpc_release
= nfs4_open_confirm_release
,
1407 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1409 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1411 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1412 struct rpc_task
*task
;
1413 struct rpc_message msg
= {
1414 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1415 .rpc_argp
= &data
->c_arg
,
1416 .rpc_resp
= &data
->c_res
,
1417 .rpc_cred
= data
->owner
->so_cred
,
1419 struct rpc_task_setup task_setup_data
= {
1420 .rpc_client
= server
->client
,
1421 .rpc_message
= &msg
,
1422 .callback_ops
= &nfs4_open_confirm_ops
,
1423 .callback_data
= data
,
1424 .workqueue
= nfsiod_workqueue
,
1425 .flags
= RPC_TASK_ASYNC
,
1429 kref_get(&data
->kref
);
1431 data
->rpc_status
= 0;
1432 data
->timestamp
= jiffies
;
1433 task
= rpc_run_task(&task_setup_data
);
1435 return PTR_ERR(task
);
1436 status
= nfs4_wait_for_completion_rpc_task(task
);
1438 data
->cancelled
= 1;
1441 status
= data
->rpc_status
;
1446 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1448 struct nfs4_opendata
*data
= calldata
;
1449 struct nfs4_state_owner
*sp
= data
->owner
;
1451 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1454 * Check if we still need to send an OPEN call, or if we can use
1455 * a delegation instead.
1457 if (data
->state
!= NULL
) {
1458 struct nfs_delegation
*delegation
;
1460 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1463 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1464 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1465 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1466 goto unlock_no_action
;
1469 /* Update sequence id. */
1470 data
->o_arg
.id
= sp
->so_seqid
.owner_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_handle_exception(server
,
1958 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1960 } while (exception
.retry
);
1964 struct nfs4_closedata
{
1965 struct inode
*inode
;
1966 struct nfs4_state
*state
;
1967 struct nfs_closeargs arg
;
1968 struct nfs_closeres res
;
1969 struct nfs_fattr fattr
;
1970 unsigned long timestamp
;
1975 static void nfs4_free_closedata(void *data
)
1977 struct nfs4_closedata
*calldata
= data
;
1978 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1979 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
1982 pnfs_roc_release(calldata
->state
->inode
);
1983 nfs4_put_open_state(calldata
->state
);
1984 nfs_free_seqid(calldata
->arg
.seqid
);
1985 nfs4_put_state_owner(sp
);
1986 nfs_sb_deactive(sb
);
1990 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
1993 spin_lock(&state
->owner
->so_lock
);
1994 if (!(fmode
& FMODE_READ
))
1995 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1996 if (!(fmode
& FMODE_WRITE
))
1997 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1998 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1999 spin_unlock(&state
->owner
->so_lock
);
2002 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2004 struct nfs4_closedata
*calldata
= data
;
2005 struct nfs4_state
*state
= calldata
->state
;
2006 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2008 dprintk("%s: begin!\n", __func__
);
2009 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2011 /* hmm. we are done with the inode, and in the process of freeing
2012 * the state_owner. we keep this around to process errors
2014 switch (task
->tk_status
) {
2017 pnfs_roc_set_barrier(state
->inode
,
2018 calldata
->roc_barrier
);
2019 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2020 renew_lease(server
, calldata
->timestamp
);
2021 nfs4_close_clear_stateid_flags(state
,
2022 calldata
->arg
.fmode
);
2024 case -NFS4ERR_STALE_STATEID
:
2025 case -NFS4ERR_OLD_STATEID
:
2026 case -NFS4ERR_BAD_STATEID
:
2027 case -NFS4ERR_EXPIRED
:
2028 if (calldata
->arg
.fmode
== 0)
2031 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2032 rpc_restart_call_prepare(task
);
2034 nfs_release_seqid(calldata
->arg
.seqid
);
2035 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2036 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2039 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2041 struct nfs4_closedata
*calldata
= data
;
2042 struct nfs4_state
*state
= calldata
->state
;
2045 dprintk("%s: begin!\n", __func__
);
2046 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2049 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2050 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2051 spin_lock(&state
->owner
->so_lock
);
2052 /* Calculate the change in open mode */
2053 if (state
->n_rdwr
== 0) {
2054 if (state
->n_rdonly
== 0) {
2055 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2056 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2057 calldata
->arg
.fmode
&= ~FMODE_READ
;
2059 if (state
->n_wronly
== 0) {
2060 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2061 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2062 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2065 spin_unlock(&state
->owner
->so_lock
);
2068 /* Note: exit _without_ calling nfs4_close_done */
2069 task
->tk_action
= NULL
;
2073 if (calldata
->arg
.fmode
== 0) {
2074 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2075 if (calldata
->roc
&&
2076 pnfs_roc_drain(calldata
->inode
, &calldata
->roc_barrier
)) {
2077 rpc_sleep_on(&NFS_SERVER(calldata
->inode
)->roc_rpcwaitq
,
2083 nfs_fattr_init(calldata
->res
.fattr
);
2084 calldata
->timestamp
= jiffies
;
2085 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
2086 &calldata
->arg
.seq_args
,
2087 &calldata
->res
.seq_res
,
2090 rpc_call_start(task
);
2092 dprintk("%s: done!\n", __func__
);
2095 static const struct rpc_call_ops nfs4_close_ops
= {
2096 .rpc_call_prepare
= nfs4_close_prepare
,
2097 .rpc_call_done
= nfs4_close_done
,
2098 .rpc_release
= nfs4_free_closedata
,
2102 * It is possible for data to be read/written from a mem-mapped file
2103 * after the sys_close call (which hits the vfs layer as a flush).
2104 * This means that we can't safely call nfsv4 close on a file until
2105 * the inode is cleared. This in turn means that we are not good
2106 * NFSv4 citizens - we do not indicate to the server to update the file's
2107 * share state even when we are done with one of the three share
2108 * stateid's in the inode.
2110 * NOTE: Caller must be holding the sp->so_owner semaphore!
2112 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
, bool roc
)
2114 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2115 struct nfs4_closedata
*calldata
;
2116 struct nfs4_state_owner
*sp
= state
->owner
;
2117 struct rpc_task
*task
;
2118 struct rpc_message msg
= {
2119 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2120 .rpc_cred
= state
->owner
->so_cred
,
2122 struct rpc_task_setup task_setup_data
= {
2123 .rpc_client
= server
->client
,
2124 .rpc_message
= &msg
,
2125 .callback_ops
= &nfs4_close_ops
,
2126 .workqueue
= nfsiod_workqueue
,
2127 .flags
= RPC_TASK_ASYNC
,
2129 int status
= -ENOMEM
;
2131 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2132 if (calldata
== NULL
)
2134 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2135 calldata
->inode
= state
->inode
;
2136 calldata
->state
= state
;
2137 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2138 calldata
->arg
.stateid
= &state
->open_stateid
;
2139 /* Serialization for the sequence id */
2140 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2141 if (calldata
->arg
.seqid
== NULL
)
2142 goto out_free_calldata
;
2143 calldata
->arg
.fmode
= 0;
2144 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2145 calldata
->res
.fattr
= &calldata
->fattr
;
2146 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2147 calldata
->res
.server
= server
;
2148 calldata
->roc
= roc
;
2149 nfs_sb_active(calldata
->inode
->i_sb
);
2151 msg
.rpc_argp
= &calldata
->arg
;
2152 msg
.rpc_resp
= &calldata
->res
;
2153 task_setup_data
.callback_data
= calldata
;
2154 task
= rpc_run_task(&task_setup_data
);
2156 return PTR_ERR(task
);
2159 status
= rpc_wait_for_completion_task(task
);
2166 pnfs_roc_release(state
->inode
);
2167 nfs4_put_open_state(state
);
2168 nfs4_put_state_owner(sp
);
2172 static struct inode
*
2173 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2175 struct nfs4_state
*state
;
2177 /* Protect against concurrent sillydeletes */
2178 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
, ctx
->cred
);
2180 return ERR_CAST(state
);
2182 return igrab(state
->inode
);
2185 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2187 if (ctx
->state
== NULL
)
2190 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2192 nfs4_close_state(ctx
->state
, ctx
->mode
);
2195 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2197 struct nfs4_server_caps_arg args
= {
2200 struct nfs4_server_caps_res res
= {};
2201 struct rpc_message msg
= {
2202 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2208 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2210 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2211 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2212 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2213 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2214 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2215 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2216 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2217 server
->caps
|= NFS_CAP_ACLS
;
2218 if (res
.has_links
!= 0)
2219 server
->caps
|= NFS_CAP_HARDLINKS
;
2220 if (res
.has_symlinks
!= 0)
2221 server
->caps
|= NFS_CAP_SYMLINKS
;
2222 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2223 server
->caps
|= NFS_CAP_FILEID
;
2224 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2225 server
->caps
|= NFS_CAP_MODE
;
2226 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2227 server
->caps
|= NFS_CAP_NLINK
;
2228 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2229 server
->caps
|= NFS_CAP_OWNER
;
2230 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2231 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2232 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2233 server
->caps
|= NFS_CAP_ATIME
;
2234 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2235 server
->caps
|= NFS_CAP_CTIME
;
2236 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2237 server
->caps
|= NFS_CAP_MTIME
;
2239 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2240 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2241 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2242 server
->acl_bitmask
= res
.acl_bitmask
;
2243 server
->fh_expire_type
= res
.fh_expire_type
;
2249 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2251 struct nfs4_exception exception
= { };
2254 err
= nfs4_handle_exception(server
,
2255 _nfs4_server_capabilities(server
, fhandle
),
2257 } while (exception
.retry
);
2261 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2262 struct nfs_fsinfo
*info
)
2264 struct nfs4_lookup_root_arg args
= {
2265 .bitmask
= nfs4_fattr_bitmap
,
2267 struct nfs4_lookup_res res
= {
2269 .fattr
= info
->fattr
,
2272 struct rpc_message msg
= {
2273 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2278 nfs_fattr_init(info
->fattr
);
2279 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2282 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2283 struct nfs_fsinfo
*info
)
2285 struct nfs4_exception exception
= { };
2288 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2291 case -NFS4ERR_WRONGSEC
:
2294 err
= nfs4_handle_exception(server
, err
, &exception
);
2296 } while (exception
.retry
);
2301 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2302 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2304 struct rpc_auth
*auth
;
2307 auth
= rpcauth_create(flavor
, server
->client
);
2312 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2317 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2318 struct nfs_fsinfo
*info
)
2320 int i
, len
, status
= 0;
2321 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2323 len
= gss_mech_list_pseudoflavors(&flav_array
[0]);
2324 flav_array
[len
] = RPC_AUTH_NULL
;
2327 for (i
= 0; i
< len
; i
++) {
2328 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2329 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2334 * -EACCESS could mean that the user doesn't have correct permissions
2335 * to access the mount. It could also mean that we tried to mount
2336 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2337 * existing mount programs don't handle -EACCES very well so it should
2338 * be mapped to -EPERM instead.
2340 if (status
== -EACCES
)
2346 * get the file handle for the "/" directory on the server
2348 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2349 struct nfs_fsinfo
*info
)
2351 int minor_version
= server
->nfs_client
->cl_minorversion
;
2352 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2353 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2355 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2356 * by nfs4_map_errors() as this function exits.
2358 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2360 status
= nfs4_server_capabilities(server
, fhandle
);
2362 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2363 return nfs4_map_errors(status
);
2367 * Get locations and (maybe) other attributes of a referral.
2368 * Note that we'll actually follow the referral later when
2369 * we detect fsid mismatch in inode revalidation
2371 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
,
2372 struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2374 int status
= -ENOMEM
;
2375 struct page
*page
= NULL
;
2376 struct nfs4_fs_locations
*locations
= NULL
;
2378 page
= alloc_page(GFP_KERNEL
);
2381 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2382 if (locations
== NULL
)
2385 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2388 /* Make sure server returned a different fsid for the referral */
2389 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2390 dprintk("%s: server did not return a different fsid for"
2391 " a referral at %s\n", __func__
, name
->name
);
2395 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2396 nfs_fixup_referral_attributes(&locations
->fattr
);
2398 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2399 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2400 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2408 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2410 struct nfs4_getattr_arg args
= {
2412 .bitmask
= server
->attr_bitmask
,
2414 struct nfs4_getattr_res res
= {
2418 struct rpc_message msg
= {
2419 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2424 nfs_fattr_init(fattr
);
2425 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2428 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2430 struct nfs4_exception exception
= { };
2433 err
= nfs4_handle_exception(server
,
2434 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2436 } while (exception
.retry
);
2441 * The file is not closed if it is opened due to the a request to change
2442 * the size of the file. The open call will not be needed once the
2443 * VFS layer lookup-intents are implemented.
2445 * Close is called when the inode is destroyed.
2446 * If we haven't opened the file for O_WRONLY, we
2447 * need to in the size_change case to obtain a stateid.
2450 * Because OPEN is always done by name in nfsv4, it is
2451 * possible that we opened a different file by the same
2452 * name. We can recognize this race condition, but we
2453 * can't do anything about it besides returning an error.
2455 * This will be fixed with VFS changes (lookup-intent).
2458 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2459 struct iattr
*sattr
)
2461 struct inode
*inode
= dentry
->d_inode
;
2462 struct rpc_cred
*cred
= NULL
;
2463 struct nfs4_state
*state
= NULL
;
2466 if (pnfs_ld_layoutret_on_setattr(inode
))
2467 pnfs_return_layout(inode
);
2469 nfs_fattr_init(fattr
);
2471 /* Search for an existing open(O_WRITE) file */
2472 if (sattr
->ia_valid
& ATTR_FILE
) {
2473 struct nfs_open_context
*ctx
;
2475 ctx
= nfs_file_open_context(sattr
->ia_file
);
2482 /* Deal with open(O_TRUNC) */
2483 if (sattr
->ia_valid
& ATTR_OPEN
)
2484 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2486 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2488 nfs_setattr_update_inode(inode
, sattr
);
2492 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2493 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2494 struct nfs_fattr
*fattr
)
2496 struct nfs_server
*server
= NFS_SERVER(dir
);
2498 struct nfs4_lookup_arg args
= {
2499 .bitmask
= server
->attr_bitmask
,
2500 .dir_fh
= NFS_FH(dir
),
2503 struct nfs4_lookup_res res
= {
2508 struct rpc_message msg
= {
2509 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2514 nfs_fattr_init(fattr
);
2516 dprintk("NFS call lookup %s\n", name
->name
);
2517 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2518 dprintk("NFS reply lookup: %d\n", status
);
2522 void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
, struct nfs_fh
*fh
)
2524 memset(fh
, 0, sizeof(struct nfs_fh
));
2525 fattr
->fsid
.major
= 1;
2526 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2527 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_FSID
| NFS_ATTR_FATTR_MOUNTPOINT
;
2528 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2532 static int nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
, struct qstr
*name
,
2533 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2535 struct nfs4_exception exception
= { };
2540 status
= _nfs4_proc_lookup(clnt
, dir
, name
, fhandle
, fattr
);
2542 case -NFS4ERR_BADNAME
:
2544 case -NFS4ERR_MOVED
:
2545 return nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2546 case -NFS4ERR_WRONGSEC
:
2547 nfs_fixup_secinfo_attributes(fattr
, fhandle
);
2549 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2550 status
, &exception
);
2551 } while (exception
.retry
);
2555 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2557 struct nfs_server
*server
= NFS_SERVER(inode
);
2558 struct nfs4_accessargs args
= {
2559 .fh
= NFS_FH(inode
),
2560 .bitmask
= server
->cache_consistency_bitmask
,
2562 struct nfs4_accessres res
= {
2565 struct rpc_message msg
= {
2566 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2569 .rpc_cred
= entry
->cred
,
2571 int mode
= entry
->mask
;
2575 * Determine which access bits we want to ask for...
2577 if (mode
& MAY_READ
)
2578 args
.access
|= NFS4_ACCESS_READ
;
2579 if (S_ISDIR(inode
->i_mode
)) {
2580 if (mode
& MAY_WRITE
)
2581 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2582 if (mode
& MAY_EXEC
)
2583 args
.access
|= NFS4_ACCESS_LOOKUP
;
2585 if (mode
& MAY_WRITE
)
2586 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2587 if (mode
& MAY_EXEC
)
2588 args
.access
|= NFS4_ACCESS_EXECUTE
;
2591 res
.fattr
= nfs_alloc_fattr();
2592 if (res
.fattr
== NULL
)
2595 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2598 if (res
.access
& NFS4_ACCESS_READ
)
2599 entry
->mask
|= MAY_READ
;
2600 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2601 entry
->mask
|= MAY_WRITE
;
2602 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2603 entry
->mask
|= MAY_EXEC
;
2604 nfs_refresh_inode(inode
, res
.fattr
);
2606 nfs_free_fattr(res
.fattr
);
2610 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2612 struct nfs4_exception exception
= { };
2615 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2616 _nfs4_proc_access(inode
, entry
),
2618 } while (exception
.retry
);
2623 * TODO: For the time being, we don't try to get any attributes
2624 * along with any of the zero-copy operations READ, READDIR,
2627 * In the case of the first three, we want to put the GETATTR
2628 * after the read-type operation -- this is because it is hard
2629 * to predict the length of a GETATTR response in v4, and thus
2630 * align the READ data correctly. This means that the GETATTR
2631 * may end up partially falling into the page cache, and we should
2632 * shift it into the 'tail' of the xdr_buf before processing.
2633 * To do this efficiently, we need to know the total length
2634 * of data received, which doesn't seem to be available outside
2637 * In the case of WRITE, we also want to put the GETATTR after
2638 * the operation -- in this case because we want to make sure
2639 * we get the post-operation mtime and size. This means that
2640 * we can't use xdr_encode_pages() as written: we need a variant
2641 * of it which would leave room in the 'tail' iovec.
2643 * Both of these changes to the XDR layer would in fact be quite
2644 * minor, but I decided to leave them for a subsequent patch.
2646 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2647 unsigned int pgbase
, unsigned int pglen
)
2649 struct nfs4_readlink args
= {
2650 .fh
= NFS_FH(inode
),
2655 struct nfs4_readlink_res res
;
2656 struct rpc_message msg
= {
2657 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2662 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2665 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2666 unsigned int pgbase
, unsigned int pglen
)
2668 struct nfs4_exception exception
= { };
2671 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2672 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2674 } while (exception
.retry
);
2680 * We will need to arrange for the VFS layer to provide an atomic open.
2681 * Until then, this create/open method is prone to inefficiency and race
2682 * conditions due to the lookup, create, and open VFS calls from sys_open()
2683 * placed on the wire.
2685 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2686 * The file will be opened again in the subsequent VFS open call
2687 * (nfs4_proc_file_open).
2689 * The open for read will just hang around to be used by any process that
2690 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2694 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2695 int flags
, struct nfs_open_context
*ctx
)
2697 struct dentry
*de
= dentry
;
2698 struct nfs4_state
*state
;
2699 struct rpc_cred
*cred
= NULL
;
2708 sattr
->ia_mode
&= ~current_umask();
2709 state
= nfs4_do_open(dir
, de
, fmode
, flags
, sattr
, cred
);
2711 if (IS_ERR(state
)) {
2712 status
= PTR_ERR(state
);
2715 d_add(dentry
, igrab(state
->inode
));
2716 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2720 nfs4_close_sync(state
, fmode
);
2725 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2727 struct nfs_server
*server
= NFS_SERVER(dir
);
2728 struct nfs_removeargs args
= {
2730 .name
.len
= name
->len
,
2731 .name
.name
= name
->name
,
2732 .bitmask
= server
->attr_bitmask
,
2734 struct nfs_removeres res
= {
2737 struct rpc_message msg
= {
2738 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2742 int status
= -ENOMEM
;
2744 res
.dir_attr
= nfs_alloc_fattr();
2745 if (res
.dir_attr
== NULL
)
2748 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2750 update_changeattr(dir
, &res
.cinfo
);
2751 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2753 nfs_free_fattr(res
.dir_attr
);
2758 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2760 struct nfs4_exception exception
= { };
2763 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2764 _nfs4_proc_remove(dir
, name
),
2766 } while (exception
.retry
);
2770 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2772 struct nfs_server
*server
= NFS_SERVER(dir
);
2773 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2774 struct nfs_removeres
*res
= msg
->rpc_resp
;
2776 args
->bitmask
= server
->cache_consistency_bitmask
;
2777 res
->server
= server
;
2778 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2779 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
2782 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
2784 if (nfs4_setup_sequence(NFS_SERVER(data
->dir
),
2785 &data
->args
.seq_args
,
2789 rpc_call_start(task
);
2792 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2794 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2796 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2798 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2800 update_changeattr(dir
, &res
->cinfo
);
2801 nfs_post_op_update_inode(dir
, res
->dir_attr
);
2805 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2807 struct nfs_server
*server
= NFS_SERVER(dir
);
2808 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2809 struct nfs_renameres
*res
= msg
->rpc_resp
;
2811 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2812 arg
->bitmask
= server
->attr_bitmask
;
2813 res
->server
= server
;
2814 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
2817 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
2819 if (nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
2820 &data
->args
.seq_args
,
2824 rpc_call_start(task
);
2827 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2828 struct inode
*new_dir
)
2830 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2832 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2834 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2837 update_changeattr(old_dir
, &res
->old_cinfo
);
2838 nfs_post_op_update_inode(old_dir
, res
->old_fattr
);
2839 update_changeattr(new_dir
, &res
->new_cinfo
);
2840 nfs_post_op_update_inode(new_dir
, res
->new_fattr
);
2844 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2845 struct inode
*new_dir
, struct qstr
*new_name
)
2847 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2848 struct nfs_renameargs arg
= {
2849 .old_dir
= NFS_FH(old_dir
),
2850 .new_dir
= NFS_FH(new_dir
),
2851 .old_name
= old_name
,
2852 .new_name
= new_name
,
2853 .bitmask
= server
->attr_bitmask
,
2855 struct nfs_renameres res
= {
2858 struct rpc_message msg
= {
2859 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2863 int status
= -ENOMEM
;
2865 res
.old_fattr
= nfs_alloc_fattr();
2866 res
.new_fattr
= nfs_alloc_fattr();
2867 if (res
.old_fattr
== NULL
|| res
.new_fattr
== NULL
)
2870 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2872 update_changeattr(old_dir
, &res
.old_cinfo
);
2873 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2874 update_changeattr(new_dir
, &res
.new_cinfo
);
2875 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2878 nfs_free_fattr(res
.new_fattr
);
2879 nfs_free_fattr(res
.old_fattr
);
2883 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2884 struct inode
*new_dir
, struct qstr
*new_name
)
2886 struct nfs4_exception exception
= { };
2889 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2890 _nfs4_proc_rename(old_dir
, old_name
,
2893 } while (exception
.retry
);
2897 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2899 struct nfs_server
*server
= NFS_SERVER(inode
);
2900 struct nfs4_link_arg arg
= {
2901 .fh
= NFS_FH(inode
),
2902 .dir_fh
= NFS_FH(dir
),
2904 .bitmask
= server
->attr_bitmask
,
2906 struct nfs4_link_res res
= {
2909 struct rpc_message msg
= {
2910 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2914 int status
= -ENOMEM
;
2916 res
.fattr
= nfs_alloc_fattr();
2917 res
.dir_attr
= nfs_alloc_fattr();
2918 if (res
.fattr
== NULL
|| res
.dir_attr
== NULL
)
2921 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2923 update_changeattr(dir
, &res
.cinfo
);
2924 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2925 nfs_post_op_update_inode(inode
, res
.fattr
);
2928 nfs_free_fattr(res
.dir_attr
);
2929 nfs_free_fattr(res
.fattr
);
2933 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2935 struct nfs4_exception exception
= { };
2938 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2939 _nfs4_proc_link(inode
, dir
, name
),
2941 } while (exception
.retry
);
2945 struct nfs4_createdata
{
2946 struct rpc_message msg
;
2947 struct nfs4_create_arg arg
;
2948 struct nfs4_create_res res
;
2950 struct nfs_fattr fattr
;
2951 struct nfs_fattr dir_fattr
;
2954 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2955 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2957 struct nfs4_createdata
*data
;
2959 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2961 struct nfs_server
*server
= NFS_SERVER(dir
);
2963 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2964 data
->msg
.rpc_argp
= &data
->arg
;
2965 data
->msg
.rpc_resp
= &data
->res
;
2966 data
->arg
.dir_fh
= NFS_FH(dir
);
2967 data
->arg
.server
= server
;
2968 data
->arg
.name
= name
;
2969 data
->arg
.attrs
= sattr
;
2970 data
->arg
.ftype
= ftype
;
2971 data
->arg
.bitmask
= server
->attr_bitmask
;
2972 data
->res
.server
= server
;
2973 data
->res
.fh
= &data
->fh
;
2974 data
->res
.fattr
= &data
->fattr
;
2975 data
->res
.dir_fattr
= &data
->dir_fattr
;
2976 nfs_fattr_init(data
->res
.fattr
);
2977 nfs_fattr_init(data
->res
.dir_fattr
);
2982 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2984 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
2985 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
2987 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2988 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2989 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2994 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2999 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3000 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3002 struct nfs4_createdata
*data
;
3003 int status
= -ENAMETOOLONG
;
3005 if (len
> NFS4_MAXPATHLEN
)
3009 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3013 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3014 data
->arg
.u
.symlink
.pages
= &page
;
3015 data
->arg
.u
.symlink
.len
= len
;
3017 status
= nfs4_do_create(dir
, dentry
, data
);
3019 nfs4_free_createdata(data
);
3024 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3025 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3027 struct nfs4_exception exception
= { };
3030 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3031 _nfs4_proc_symlink(dir
, dentry
, page
,
3034 } while (exception
.retry
);
3038 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3039 struct iattr
*sattr
)
3041 struct nfs4_createdata
*data
;
3042 int status
= -ENOMEM
;
3044 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3048 status
= nfs4_do_create(dir
, dentry
, data
);
3050 nfs4_free_createdata(data
);
3055 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3056 struct iattr
*sattr
)
3058 struct nfs4_exception exception
= { };
3061 sattr
->ia_mode
&= ~current_umask();
3063 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3064 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3066 } while (exception
.retry
);
3070 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3071 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3073 struct inode
*dir
= dentry
->d_inode
;
3074 struct nfs4_readdir_arg args
= {
3079 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3082 struct nfs4_readdir_res res
;
3083 struct rpc_message msg
= {
3084 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3091 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3092 dentry
->d_parent
->d_name
.name
,
3093 dentry
->d_name
.name
,
3094 (unsigned long long)cookie
);
3095 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
3096 res
.pgbase
= args
.pgbase
;
3097 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3099 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3100 status
+= args
.pgbase
;
3103 nfs_invalidate_atime(dir
);
3105 dprintk("%s: returns %d\n", __func__
, status
);
3109 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3110 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3112 struct nfs4_exception exception
= { };
3115 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3116 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3117 pages
, count
, plus
),
3119 } while (exception
.retry
);
3123 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3124 struct iattr
*sattr
, dev_t rdev
)
3126 struct nfs4_createdata
*data
;
3127 int mode
= sattr
->ia_mode
;
3128 int status
= -ENOMEM
;
3130 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
3131 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
3133 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3138 data
->arg
.ftype
= NF4FIFO
;
3139 else if (S_ISBLK(mode
)) {
3140 data
->arg
.ftype
= NF4BLK
;
3141 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3142 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3144 else if (S_ISCHR(mode
)) {
3145 data
->arg
.ftype
= NF4CHR
;
3146 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3147 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3150 status
= nfs4_do_create(dir
, dentry
, data
);
3152 nfs4_free_createdata(data
);
3157 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3158 struct iattr
*sattr
, dev_t rdev
)
3160 struct nfs4_exception exception
= { };
3163 sattr
->ia_mode
&= ~current_umask();
3165 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3166 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3168 } while (exception
.retry
);
3172 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3173 struct nfs_fsstat
*fsstat
)
3175 struct nfs4_statfs_arg args
= {
3177 .bitmask
= server
->attr_bitmask
,
3179 struct nfs4_statfs_res res
= {
3182 struct rpc_message msg
= {
3183 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3188 nfs_fattr_init(fsstat
->fattr
);
3189 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3192 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3194 struct nfs4_exception exception
= { };
3197 err
= nfs4_handle_exception(server
,
3198 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3200 } while (exception
.retry
);
3204 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3205 struct nfs_fsinfo
*fsinfo
)
3207 struct nfs4_fsinfo_arg args
= {
3209 .bitmask
= server
->attr_bitmask
,
3211 struct nfs4_fsinfo_res res
= {
3214 struct rpc_message msg
= {
3215 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3220 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3223 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3225 struct nfs4_exception exception
= { };
3229 err
= nfs4_handle_exception(server
,
3230 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3232 } while (exception
.retry
);
3236 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3238 nfs_fattr_init(fsinfo
->fattr
);
3239 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3242 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3243 struct nfs_pathconf
*pathconf
)
3245 struct nfs4_pathconf_arg args
= {
3247 .bitmask
= server
->attr_bitmask
,
3249 struct nfs4_pathconf_res res
= {
3250 .pathconf
= pathconf
,
3252 struct rpc_message msg
= {
3253 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3258 /* None of the pathconf attributes are mandatory to implement */
3259 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3260 memset(pathconf
, 0, sizeof(*pathconf
));
3264 nfs_fattr_init(pathconf
->fattr
);
3265 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3268 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3269 struct nfs_pathconf
*pathconf
)
3271 struct nfs4_exception exception
= { };
3275 err
= nfs4_handle_exception(server
,
3276 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3278 } while (exception
.retry
);
3282 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3284 nfs_invalidate_atime(data
->inode
);
3287 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3289 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3291 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3292 rpc_restart_call_prepare(task
);
3296 __nfs4_read_done_cb(data
);
3297 if (task
->tk_status
> 0)
3298 renew_lease(server
, data
->timestamp
);
3302 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3305 dprintk("--> %s\n", __func__
);
3307 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3310 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3311 nfs4_read_done_cb(task
, data
);
3314 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3316 data
->timestamp
= jiffies
;
3317 data
->read_done_cb
= nfs4_read_done_cb
;
3318 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3319 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3322 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3324 if (nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3325 &data
->args
.seq_args
,
3329 rpc_call_start(task
);
3332 /* Reset the the nfs_read_data to send the read to the MDS. */
3333 void nfs4_reset_read(struct rpc_task
*task
, struct nfs_read_data
*data
)
3335 dprintk("%s Reset task for i/o through\n", __func__
);
3336 put_lseg(data
->lseg
);
3338 /* offsets will differ in the dense stripe case */
3339 data
->args
.offset
= data
->mds_offset
;
3340 data
->ds_clp
= NULL
;
3341 data
->args
.fh
= NFS_FH(data
->inode
);
3342 data
->read_done_cb
= nfs4_read_done_cb
;
3343 task
->tk_ops
= data
->mds_ops
;
3344 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3346 EXPORT_SYMBOL_GPL(nfs4_reset_read
);
3348 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3350 struct inode
*inode
= data
->inode
;
3352 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3353 rpc_restart_call_prepare(task
);
3356 if (task
->tk_status
>= 0) {
3357 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3358 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3363 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3365 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3367 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3368 nfs4_write_done_cb(task
, data
);
3371 /* Reset the the nfs_write_data to send the write to the MDS. */
3372 void nfs4_reset_write(struct rpc_task
*task
, struct nfs_write_data
*data
)
3374 dprintk("%s Reset task for i/o through\n", __func__
);
3375 put_lseg(data
->lseg
);
3377 data
->ds_clp
= NULL
;
3378 data
->write_done_cb
= nfs4_write_done_cb
;
3379 data
->args
.fh
= NFS_FH(data
->inode
);
3380 data
->args
.bitmask
= data
->res
.server
->cache_consistency_bitmask
;
3381 data
->args
.offset
= data
->mds_offset
;
3382 data
->res
.fattr
= &data
->fattr
;
3383 task
->tk_ops
= data
->mds_ops
;
3384 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3386 EXPORT_SYMBOL_GPL(nfs4_reset_write
);
3388 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3390 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3393 data
->args
.bitmask
= NULL
;
3394 data
->res
.fattr
= NULL
;
3396 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3397 if (!data
->write_done_cb
)
3398 data
->write_done_cb
= nfs4_write_done_cb
;
3399 data
->res
.server
= server
;
3400 data
->timestamp
= jiffies
;
3402 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3403 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3406 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3408 if (nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3409 &data
->args
.seq_args
,
3413 rpc_call_start(task
);
3416 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3418 struct inode
*inode
= data
->inode
;
3420 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3421 rpc_restart_call_prepare(task
);
3424 nfs_refresh_inode(inode
, data
->res
.fattr
);
3428 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3430 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3432 return data
->write_done_cb(task
, data
);
3435 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3437 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3440 data
->args
.bitmask
= NULL
;
3441 data
->res
.fattr
= NULL
;
3443 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3444 if (!data
->write_done_cb
)
3445 data
->write_done_cb
= nfs4_commit_done_cb
;
3446 data
->res
.server
= server
;
3447 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3448 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3451 struct nfs4_renewdata
{
3452 struct nfs_client
*client
;
3453 unsigned long timestamp
;
3457 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3458 * standalone procedure for queueing an asynchronous RENEW.
3460 static void nfs4_renew_release(void *calldata
)
3462 struct nfs4_renewdata
*data
= calldata
;
3463 struct nfs_client
*clp
= data
->client
;
3465 if (atomic_read(&clp
->cl_count
) > 1)
3466 nfs4_schedule_state_renewal(clp
);
3467 nfs_put_client(clp
);
3471 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3473 struct nfs4_renewdata
*data
= calldata
;
3474 struct nfs_client
*clp
= data
->client
;
3475 unsigned long timestamp
= data
->timestamp
;
3477 if (task
->tk_status
< 0) {
3478 /* Unless we're shutting down, schedule state recovery! */
3479 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3481 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3482 nfs4_schedule_lease_recovery(clp
);
3485 nfs4_schedule_path_down_recovery(clp
);
3487 do_renew_lease(clp
, timestamp
);
3490 static const struct rpc_call_ops nfs4_renew_ops
= {
3491 .rpc_call_done
= nfs4_renew_done
,
3492 .rpc_release
= nfs4_renew_release
,
3495 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3497 struct rpc_message msg
= {
3498 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3502 struct nfs4_renewdata
*data
;
3504 if (renew_flags
== 0)
3506 if (!atomic_inc_not_zero(&clp
->cl_count
))
3508 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3512 data
->timestamp
= jiffies
;
3513 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3514 &nfs4_renew_ops
, data
);
3517 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3519 struct rpc_message msg
= {
3520 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3524 unsigned long now
= jiffies
;
3527 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3530 do_renew_lease(clp
, now
);
3534 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3536 return (server
->caps
& NFS_CAP_ACLS
)
3537 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3538 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3541 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3542 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3545 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3547 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3548 struct page
**pages
, unsigned int *pgbase
)
3550 struct page
*newpage
, **spages
;
3556 len
= min_t(size_t, PAGE_CACHE_SIZE
, buflen
);
3557 newpage
= alloc_page(GFP_KERNEL
);
3559 if (newpage
== NULL
)
3561 memcpy(page_address(newpage
), buf
, len
);
3566 } while (buflen
!= 0);
3572 __free_page(spages
[rc
-1]);
3576 struct nfs4_cached_acl
{
3582 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3584 struct nfs_inode
*nfsi
= NFS_I(inode
);
3586 spin_lock(&inode
->i_lock
);
3587 kfree(nfsi
->nfs4_acl
);
3588 nfsi
->nfs4_acl
= acl
;
3589 spin_unlock(&inode
->i_lock
);
3592 static void nfs4_zap_acl_attr(struct inode
*inode
)
3594 nfs4_set_cached_acl(inode
, NULL
);
3597 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3599 struct nfs_inode
*nfsi
= NFS_I(inode
);
3600 struct nfs4_cached_acl
*acl
;
3603 spin_lock(&inode
->i_lock
);
3604 acl
= nfsi
->nfs4_acl
;
3607 if (buf
== NULL
) /* user is just asking for length */
3609 if (acl
->cached
== 0)
3611 ret
= -ERANGE
; /* see getxattr(2) man page */
3612 if (acl
->len
> buflen
)
3614 memcpy(buf
, acl
->data
, acl
->len
);
3618 spin_unlock(&inode
->i_lock
);
3622 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3624 struct nfs4_cached_acl
*acl
;
3626 if (buf
&& acl_len
<= PAGE_SIZE
) {
3627 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3631 memcpy(acl
->data
, buf
, acl_len
);
3633 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3640 nfs4_set_cached_acl(inode
, acl
);
3644 * The getxattr API returns the required buffer length when called with a
3645 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3646 * the required buf. On a NULL buf, we send a page of data to the server
3647 * guessing that the ACL request can be serviced by a page. If so, we cache
3648 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3649 * the cache. If not so, we throw away the page, and cache the required
3650 * length. The next getxattr call will then produce another round trip to
3651 * the server, this time with the input buf of the required size.
3653 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3655 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3656 struct nfs_getaclargs args
= {
3657 .fh
= NFS_FH(inode
),
3661 struct nfs_getaclres res
= {
3665 struct rpc_message msg
= {
3666 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3670 int ret
= -ENOMEM
, npages
, i
, acl_len
= 0;
3672 npages
= (buflen
+ PAGE_SIZE
- 1) >> PAGE_SHIFT
;
3673 /* As long as we're doing a round trip to the server anyway,
3674 * let's be prepared for a page of acl data. */
3678 for (i
= 0; i
< npages
; i
++) {
3679 pages
[i
] = alloc_page(GFP_KERNEL
);
3684 /* for decoding across pages */
3685 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3686 if (!res
.acl_scratch
)
3689 args
.acl_len
= npages
* PAGE_SIZE
;
3690 args
.acl_pgbase
= 0;
3691 /* Let decode_getfacl know not to fail if the ACL data is larger than
3692 * the page we send as a guess */
3694 res
.acl_flags
|= NFS4_ACL_LEN_REQUEST
;
3695 resp_buf
= page_address(pages
[0]);
3697 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3698 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3699 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3700 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3704 acl_len
= res
.acl_len
- res
.acl_data_offset
;
3705 if (acl_len
> args
.acl_len
)
3706 nfs4_write_cached_acl(inode
, NULL
, acl_len
);
3708 nfs4_write_cached_acl(inode
, resp_buf
+ res
.acl_data_offset
,
3712 if (acl_len
> buflen
)
3714 _copy_from_pages(buf
, pages
, res
.acl_data_offset
,
3719 for (i
= 0; i
< npages
; i
++)
3721 __free_page(pages
[i
]);
3722 if (res
.acl_scratch
)
3723 __free_page(res
.acl_scratch
);
3727 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3729 struct nfs4_exception exception
= { };
3732 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3735 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3736 } while (exception
.retry
);
3740 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3742 struct nfs_server
*server
= NFS_SERVER(inode
);
3745 if (!nfs4_server_supports_acls(server
))
3747 ret
= nfs_revalidate_inode(server
, inode
);
3750 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3751 nfs_zap_acl_cache(inode
);
3752 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3754 /* -ENOENT is returned if there is no ACL or if there is an ACL
3755 * but no cached acl data, just the acl length */
3757 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3760 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3762 struct nfs_server
*server
= NFS_SERVER(inode
);
3763 struct page
*pages
[NFS4ACL_MAXPAGES
];
3764 struct nfs_setaclargs arg
= {
3765 .fh
= NFS_FH(inode
),
3769 struct nfs_setaclres res
;
3770 struct rpc_message msg
= {
3771 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3777 if (!nfs4_server_supports_acls(server
))
3779 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3782 nfs_inode_return_delegation(inode
);
3783 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3786 * Free each page after tx, so the only ref left is
3787 * held by the network stack
3790 put_page(pages
[i
-1]);
3793 * Acl update can result in inode attribute update.
3794 * so mark the attribute cache invalid.
3796 spin_lock(&inode
->i_lock
);
3797 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3798 spin_unlock(&inode
->i_lock
);
3799 nfs_access_zap_cache(inode
);
3800 nfs_zap_acl_cache(inode
);
3804 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3806 struct nfs4_exception exception
= { };
3809 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3810 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3812 } while (exception
.retry
);
3817 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3819 struct nfs_client
*clp
= server
->nfs_client
;
3821 if (task
->tk_status
>= 0)
3823 switch(task
->tk_status
) {
3824 case -NFS4ERR_DELEG_REVOKED
:
3825 case -NFS4ERR_ADMIN_REVOKED
:
3826 case -NFS4ERR_BAD_STATEID
:
3829 nfs_remove_bad_delegation(state
->inode
);
3830 case -NFS4ERR_OPENMODE
:
3833 nfs4_schedule_stateid_recovery(server
, state
);
3834 goto wait_on_recovery
;
3835 case -NFS4ERR_EXPIRED
:
3837 nfs4_schedule_stateid_recovery(server
, state
);
3838 case -NFS4ERR_STALE_STATEID
:
3839 case -NFS4ERR_STALE_CLIENTID
:
3840 nfs4_schedule_lease_recovery(clp
);
3841 goto wait_on_recovery
;
3842 #if defined(CONFIG_NFS_V4_1)
3843 case -NFS4ERR_BADSESSION
:
3844 case -NFS4ERR_BADSLOT
:
3845 case -NFS4ERR_BAD_HIGH_SLOT
:
3846 case -NFS4ERR_DEADSESSION
:
3847 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3848 case -NFS4ERR_SEQ_FALSE_RETRY
:
3849 case -NFS4ERR_SEQ_MISORDERED
:
3850 dprintk("%s ERROR %d, Reset session\n", __func__
,
3852 nfs4_schedule_session_recovery(clp
->cl_session
);
3853 task
->tk_status
= 0;
3855 #endif /* CONFIG_NFS_V4_1 */
3856 case -NFS4ERR_DELAY
:
3857 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3858 case -NFS4ERR_GRACE
:
3860 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3861 task
->tk_status
= 0;
3863 case -NFS4ERR_RETRY_UNCACHED_REP
:
3864 case -NFS4ERR_OLD_STATEID
:
3865 task
->tk_status
= 0;
3868 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3871 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3872 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3873 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3874 task
->tk_status
= 0;
3878 static void nfs4_construct_boot_verifier(struct nfs_client
*clp
,
3879 nfs4_verifier
*bootverf
)
3883 verf
[0] = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3884 verf
[1] = htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3885 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
3888 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
3889 unsigned short port
, struct rpc_cred
*cred
,
3890 struct nfs4_setclientid_res
*res
)
3892 nfs4_verifier sc_verifier
;
3893 struct nfs4_setclientid setclientid
= {
3894 .sc_verifier
= &sc_verifier
,
3896 .sc_cb_ident
= clp
->cl_cb_ident
,
3898 struct rpc_message msg
= {
3899 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3900 .rpc_argp
= &setclientid
,
3907 nfs4_construct_boot_verifier(clp
, &sc_verifier
);
3911 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3912 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3914 rpc_peeraddr2str(clp
->cl_rpcclient
,
3916 rpc_peeraddr2str(clp
->cl_rpcclient
,
3918 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3919 clp
->cl_id_uniquifier
);
3920 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3921 sizeof(setclientid
.sc_netid
),
3922 rpc_peeraddr2str(clp
->cl_rpcclient
,
3923 RPC_DISPLAY_NETID
));
3924 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3925 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3926 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3929 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3930 if (status
!= -NFS4ERR_CLID_INUSE
)
3933 ++clp
->cl_id_uniquifier
;
3937 ssleep(clp
->cl_lease_time
/ HZ
+ 1);
3942 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3943 struct nfs4_setclientid_res
*arg
,
3944 struct rpc_cred
*cred
)
3946 struct nfs_fsinfo fsinfo
;
3947 struct rpc_message msg
= {
3948 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3950 .rpc_resp
= &fsinfo
,
3957 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3959 spin_lock(&clp
->cl_lock
);
3960 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3961 clp
->cl_last_renewal
= now
;
3962 spin_unlock(&clp
->cl_lock
);
3967 struct nfs4_delegreturndata
{
3968 struct nfs4_delegreturnargs args
;
3969 struct nfs4_delegreturnres res
;
3971 nfs4_stateid stateid
;
3972 unsigned long timestamp
;
3973 struct nfs_fattr fattr
;
3977 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3979 struct nfs4_delegreturndata
*data
= calldata
;
3981 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3984 switch (task
->tk_status
) {
3985 case -NFS4ERR_STALE_STATEID
:
3986 case -NFS4ERR_EXPIRED
:
3988 renew_lease(data
->res
.server
, data
->timestamp
);
3991 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
3993 rpc_restart_call_prepare(task
);
3997 data
->rpc_status
= task
->tk_status
;
4000 static void nfs4_delegreturn_release(void *calldata
)
4005 #if defined(CONFIG_NFS_V4_1)
4006 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4008 struct nfs4_delegreturndata
*d_data
;
4010 d_data
= (struct nfs4_delegreturndata
*)data
;
4012 if (nfs4_setup_sequence(d_data
->res
.server
,
4013 &d_data
->args
.seq_args
,
4014 &d_data
->res
.seq_res
, task
))
4016 rpc_call_start(task
);
4018 #endif /* CONFIG_NFS_V4_1 */
4020 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4021 #if defined(CONFIG_NFS_V4_1)
4022 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4023 #endif /* CONFIG_NFS_V4_1 */
4024 .rpc_call_done
= nfs4_delegreturn_done
,
4025 .rpc_release
= nfs4_delegreturn_release
,
4028 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4030 struct nfs4_delegreturndata
*data
;
4031 struct nfs_server
*server
= NFS_SERVER(inode
);
4032 struct rpc_task
*task
;
4033 struct rpc_message msg
= {
4034 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4037 struct rpc_task_setup task_setup_data
= {
4038 .rpc_client
= server
->client
,
4039 .rpc_message
= &msg
,
4040 .callback_ops
= &nfs4_delegreturn_ops
,
4041 .flags
= RPC_TASK_ASYNC
,
4045 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4048 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4049 data
->args
.fhandle
= &data
->fh
;
4050 data
->args
.stateid
= &data
->stateid
;
4051 data
->args
.bitmask
= server
->attr_bitmask
;
4052 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4053 nfs4_stateid_copy(&data
->stateid
, stateid
);
4054 data
->res
.fattr
= &data
->fattr
;
4055 data
->res
.server
= server
;
4056 nfs_fattr_init(data
->res
.fattr
);
4057 data
->timestamp
= jiffies
;
4058 data
->rpc_status
= 0;
4060 task_setup_data
.callback_data
= data
;
4061 msg
.rpc_argp
= &data
->args
;
4062 msg
.rpc_resp
= &data
->res
;
4063 task
= rpc_run_task(&task_setup_data
);
4065 return PTR_ERR(task
);
4068 status
= nfs4_wait_for_completion_rpc_task(task
);
4071 status
= data
->rpc_status
;
4074 nfs_refresh_inode(inode
, &data
->fattr
);
4080 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4082 struct nfs_server
*server
= NFS_SERVER(inode
);
4083 struct nfs4_exception exception
= { };
4086 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4088 case -NFS4ERR_STALE_STATEID
:
4089 case -NFS4ERR_EXPIRED
:
4093 err
= nfs4_handle_exception(server
, err
, &exception
);
4094 } while (exception
.retry
);
4098 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4099 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4102 * sleep, with exponential backoff, and retry the LOCK operation.
4104 static unsigned long
4105 nfs4_set_lock_task_retry(unsigned long timeout
)
4107 freezable_schedule_timeout_killable(timeout
);
4109 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4110 return NFS4_LOCK_MAXTIMEOUT
;
4114 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4116 struct inode
*inode
= state
->inode
;
4117 struct nfs_server
*server
= NFS_SERVER(inode
);
4118 struct nfs_client
*clp
= server
->nfs_client
;
4119 struct nfs_lockt_args arg
= {
4120 .fh
= NFS_FH(inode
),
4123 struct nfs_lockt_res res
= {
4126 struct rpc_message msg
= {
4127 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4130 .rpc_cred
= state
->owner
->so_cred
,
4132 struct nfs4_lock_state
*lsp
;
4135 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4136 status
= nfs4_set_lock_state(state
, request
);
4139 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4140 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4141 arg
.lock_owner
.s_dev
= server
->s_dev
;
4142 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4145 request
->fl_type
= F_UNLCK
;
4147 case -NFS4ERR_DENIED
:
4150 request
->fl_ops
->fl_release_private(request
);
4155 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4157 struct nfs4_exception exception
= { };
4161 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4162 _nfs4_proc_getlk(state
, cmd
, request
),
4164 } while (exception
.retry
);
4168 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4171 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4173 res
= posix_lock_file_wait(file
, fl
);
4176 res
= flock_lock_file_wait(file
, fl
);
4184 struct nfs4_unlockdata
{
4185 struct nfs_locku_args arg
;
4186 struct nfs_locku_res res
;
4187 struct nfs4_lock_state
*lsp
;
4188 struct nfs_open_context
*ctx
;
4189 struct file_lock fl
;
4190 const struct nfs_server
*server
;
4191 unsigned long timestamp
;
4194 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4195 struct nfs_open_context
*ctx
,
4196 struct nfs4_lock_state
*lsp
,
4197 struct nfs_seqid
*seqid
)
4199 struct nfs4_unlockdata
*p
;
4200 struct inode
*inode
= lsp
->ls_state
->inode
;
4202 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4205 p
->arg
.fh
= NFS_FH(inode
);
4207 p
->arg
.seqid
= seqid
;
4208 p
->res
.seqid
= seqid
;
4209 p
->arg
.stateid
= &lsp
->ls_stateid
;
4211 atomic_inc(&lsp
->ls_count
);
4212 /* Ensure we don't close file until we're done freeing locks! */
4213 p
->ctx
= get_nfs_open_context(ctx
);
4214 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4215 p
->server
= NFS_SERVER(inode
);
4219 static void nfs4_locku_release_calldata(void *data
)
4221 struct nfs4_unlockdata
*calldata
= data
;
4222 nfs_free_seqid(calldata
->arg
.seqid
);
4223 nfs4_put_lock_state(calldata
->lsp
);
4224 put_nfs_open_context(calldata
->ctx
);
4228 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4230 struct nfs4_unlockdata
*calldata
= data
;
4232 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4234 switch (task
->tk_status
) {
4236 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4237 &calldata
->res
.stateid
);
4238 renew_lease(calldata
->server
, calldata
->timestamp
);
4240 case -NFS4ERR_BAD_STATEID
:
4241 case -NFS4ERR_OLD_STATEID
:
4242 case -NFS4ERR_STALE_STATEID
:
4243 case -NFS4ERR_EXPIRED
:
4246 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4247 rpc_restart_call_prepare(task
);
4251 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4253 struct nfs4_unlockdata
*calldata
= data
;
4255 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4257 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
4258 /* Note: exit _without_ running nfs4_locku_done */
4259 task
->tk_action
= NULL
;
4262 calldata
->timestamp
= jiffies
;
4263 if (nfs4_setup_sequence(calldata
->server
,
4264 &calldata
->arg
.seq_args
,
4265 &calldata
->res
.seq_res
, task
))
4267 rpc_call_start(task
);
4270 static const struct rpc_call_ops nfs4_locku_ops
= {
4271 .rpc_call_prepare
= nfs4_locku_prepare
,
4272 .rpc_call_done
= nfs4_locku_done
,
4273 .rpc_release
= nfs4_locku_release_calldata
,
4276 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4277 struct nfs_open_context
*ctx
,
4278 struct nfs4_lock_state
*lsp
,
4279 struct nfs_seqid
*seqid
)
4281 struct nfs4_unlockdata
*data
;
4282 struct rpc_message msg
= {
4283 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4284 .rpc_cred
= ctx
->cred
,
4286 struct rpc_task_setup task_setup_data
= {
4287 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4288 .rpc_message
= &msg
,
4289 .callback_ops
= &nfs4_locku_ops
,
4290 .workqueue
= nfsiod_workqueue
,
4291 .flags
= RPC_TASK_ASYNC
,
4294 /* Ensure this is an unlock - when canceling a lock, the
4295 * canceled lock is passed in, and it won't be an unlock.
4297 fl
->fl_type
= F_UNLCK
;
4299 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4301 nfs_free_seqid(seqid
);
4302 return ERR_PTR(-ENOMEM
);
4305 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4306 msg
.rpc_argp
= &data
->arg
;
4307 msg
.rpc_resp
= &data
->res
;
4308 task_setup_data
.callback_data
= data
;
4309 return rpc_run_task(&task_setup_data
);
4312 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4314 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4315 struct nfs_seqid
*seqid
;
4316 struct nfs4_lock_state
*lsp
;
4317 struct rpc_task
*task
;
4319 unsigned char fl_flags
= request
->fl_flags
;
4321 status
= nfs4_set_lock_state(state
, request
);
4322 /* Unlock _before_ we do the RPC call */
4323 request
->fl_flags
|= FL_EXISTS
;
4324 down_read(&nfsi
->rwsem
);
4325 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4326 up_read(&nfsi
->rwsem
);
4329 up_read(&nfsi
->rwsem
);
4332 /* Is this a delegated lock? */
4333 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4335 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4336 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4340 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4341 status
= PTR_ERR(task
);
4344 status
= nfs4_wait_for_completion_rpc_task(task
);
4347 request
->fl_flags
= fl_flags
;
4351 struct nfs4_lockdata
{
4352 struct nfs_lock_args arg
;
4353 struct nfs_lock_res res
;
4354 struct nfs4_lock_state
*lsp
;
4355 struct nfs_open_context
*ctx
;
4356 struct file_lock fl
;
4357 unsigned long timestamp
;
4360 struct nfs_server
*server
;
4363 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4364 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4367 struct nfs4_lockdata
*p
;
4368 struct inode
*inode
= lsp
->ls_state
->inode
;
4369 struct nfs_server
*server
= NFS_SERVER(inode
);
4371 p
= kzalloc(sizeof(*p
), gfp_mask
);
4375 p
->arg
.fh
= NFS_FH(inode
);
4377 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4378 if (p
->arg
.open_seqid
== NULL
)
4380 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4381 if (p
->arg
.lock_seqid
== NULL
)
4382 goto out_free_seqid
;
4383 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4384 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4385 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4386 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4387 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4390 atomic_inc(&lsp
->ls_count
);
4391 p
->ctx
= get_nfs_open_context(ctx
);
4392 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4395 nfs_free_seqid(p
->arg
.open_seqid
);
4401 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4403 struct nfs4_lockdata
*data
= calldata
;
4404 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4406 dprintk("%s: begin!\n", __func__
);
4407 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4409 /* Do we need to do an open_to_lock_owner? */
4410 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4411 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4413 data
->arg
.open_stateid
= &state
->stateid
;
4414 data
->arg
.new_lock_owner
= 1;
4415 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4417 data
->arg
.new_lock_owner
= 0;
4418 data
->timestamp
= jiffies
;
4419 if (nfs4_setup_sequence(data
->server
,
4420 &data
->arg
.seq_args
,
4421 &data
->res
.seq_res
, task
))
4423 rpc_call_start(task
);
4424 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4427 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4429 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4430 nfs4_lock_prepare(task
, calldata
);
4433 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4435 struct nfs4_lockdata
*data
= calldata
;
4437 dprintk("%s: begin!\n", __func__
);
4439 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4442 data
->rpc_status
= task
->tk_status
;
4443 if (data
->arg
.new_lock_owner
!= 0) {
4444 if (data
->rpc_status
== 0)
4445 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4449 if (data
->rpc_status
== 0) {
4450 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4451 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4452 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4455 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4458 static void nfs4_lock_release(void *calldata
)
4460 struct nfs4_lockdata
*data
= calldata
;
4462 dprintk("%s: begin!\n", __func__
);
4463 nfs_free_seqid(data
->arg
.open_seqid
);
4464 if (data
->cancelled
!= 0) {
4465 struct rpc_task
*task
;
4466 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4467 data
->arg
.lock_seqid
);
4469 rpc_put_task_async(task
);
4470 dprintk("%s: cancelling lock!\n", __func__
);
4472 nfs_free_seqid(data
->arg
.lock_seqid
);
4473 nfs4_put_lock_state(data
->lsp
);
4474 put_nfs_open_context(data
->ctx
);
4476 dprintk("%s: done!\n", __func__
);
4479 static const struct rpc_call_ops nfs4_lock_ops
= {
4480 .rpc_call_prepare
= nfs4_lock_prepare
,
4481 .rpc_call_done
= nfs4_lock_done
,
4482 .rpc_release
= nfs4_lock_release
,
4485 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4486 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4487 .rpc_call_done
= nfs4_lock_done
,
4488 .rpc_release
= nfs4_lock_release
,
4491 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4494 case -NFS4ERR_ADMIN_REVOKED
:
4495 case -NFS4ERR_BAD_STATEID
:
4496 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4497 if (new_lock_owner
!= 0 ||
4498 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4499 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4501 case -NFS4ERR_STALE_STATEID
:
4502 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4503 case -NFS4ERR_EXPIRED
:
4504 nfs4_schedule_lease_recovery(server
->nfs_client
);
4508 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4510 struct nfs4_lockdata
*data
;
4511 struct rpc_task
*task
;
4512 struct rpc_message msg
= {
4513 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4514 .rpc_cred
= state
->owner
->so_cred
,
4516 struct rpc_task_setup task_setup_data
= {
4517 .rpc_client
= NFS_CLIENT(state
->inode
),
4518 .rpc_message
= &msg
,
4519 .callback_ops
= &nfs4_lock_ops
,
4520 .workqueue
= nfsiod_workqueue
,
4521 .flags
= RPC_TASK_ASYNC
,
4525 dprintk("%s: begin!\n", __func__
);
4526 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4527 fl
->fl_u
.nfs4_fl
.owner
,
4528 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4532 data
->arg
.block
= 1;
4533 if (recovery_type
> NFS_LOCK_NEW
) {
4534 if (recovery_type
== NFS_LOCK_RECLAIM
)
4535 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4536 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4538 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4539 msg
.rpc_argp
= &data
->arg
;
4540 msg
.rpc_resp
= &data
->res
;
4541 task_setup_data
.callback_data
= data
;
4542 task
= rpc_run_task(&task_setup_data
);
4544 return PTR_ERR(task
);
4545 ret
= nfs4_wait_for_completion_rpc_task(task
);
4547 ret
= data
->rpc_status
;
4549 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4550 data
->arg
.new_lock_owner
, ret
);
4552 data
->cancelled
= 1;
4554 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4558 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4560 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4561 struct nfs4_exception exception
= {
4562 .inode
= state
->inode
,
4567 /* Cache the lock if possible... */
4568 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4570 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4571 if (err
!= -NFS4ERR_DELAY
)
4573 nfs4_handle_exception(server
, err
, &exception
);
4574 } while (exception
.retry
);
4578 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4580 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4581 struct nfs4_exception exception
= {
4582 .inode
= state
->inode
,
4586 err
= nfs4_set_lock_state(state
, request
);
4590 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4592 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4596 case -NFS4ERR_GRACE
:
4597 case -NFS4ERR_DELAY
:
4598 nfs4_handle_exception(server
, err
, &exception
);
4601 } while (exception
.retry
);
4606 #if defined(CONFIG_NFS_V4_1)
4607 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4609 int status
, ret
= NFS_OK
;
4610 struct nfs4_lock_state
*lsp
;
4611 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4613 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4614 if (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) {
4615 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4616 if (status
!= NFS_OK
) {
4617 nfs41_free_stateid(server
, &lsp
->ls_stateid
);
4618 lsp
->ls_flags
&= ~NFS_LOCK_INITIALIZED
;
4627 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4629 int status
= NFS_OK
;
4631 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4632 status
= nfs41_check_expired_locks(state
);
4633 if (status
== NFS_OK
)
4635 return nfs4_lock_expired(state
, request
);
4639 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4641 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4642 unsigned char fl_flags
= request
->fl_flags
;
4643 int status
= -ENOLCK
;
4645 if ((fl_flags
& FL_POSIX
) &&
4646 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4648 /* Is this a delegated open? */
4649 status
= nfs4_set_lock_state(state
, request
);
4652 request
->fl_flags
|= FL_ACCESS
;
4653 status
= do_vfs_lock(request
->fl_file
, request
);
4656 down_read(&nfsi
->rwsem
);
4657 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4658 /* Yes: cache locks! */
4659 /* ...but avoid races with delegation recall... */
4660 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4661 status
= do_vfs_lock(request
->fl_file
, request
);
4664 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4667 /* Note: we always want to sleep here! */
4668 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4669 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4670 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4671 "manager!\n", __func__
);
4673 up_read(&nfsi
->rwsem
);
4675 request
->fl_flags
= fl_flags
;
4679 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4681 struct nfs4_exception exception
= {
4683 .inode
= state
->inode
,
4688 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4689 if (err
== -NFS4ERR_DENIED
)
4691 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4693 } while (exception
.retry
);
4698 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4700 struct nfs_open_context
*ctx
;
4701 struct nfs4_state
*state
;
4702 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4705 /* verify open state */
4706 ctx
= nfs_file_open_context(filp
);
4709 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4712 if (IS_GETLK(cmd
)) {
4714 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4718 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4721 if (request
->fl_type
== F_UNLCK
) {
4723 return nfs4_proc_unlck(state
, cmd
, request
);
4730 status
= nfs4_proc_setlk(state
, cmd
, request
);
4731 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4733 timeout
= nfs4_set_lock_task_retry(timeout
);
4734 status
= -ERESTARTSYS
;
4737 } while(status
< 0);
4741 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4743 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4744 struct nfs4_exception exception
= { };
4747 err
= nfs4_set_lock_state(state
, fl
);
4751 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4754 printk(KERN_ERR
"NFS: %s: unhandled error "
4755 "%d.\n", __func__
, err
);
4759 case -NFS4ERR_EXPIRED
:
4760 nfs4_schedule_stateid_recovery(server
, state
);
4761 case -NFS4ERR_STALE_CLIENTID
:
4762 case -NFS4ERR_STALE_STATEID
:
4763 nfs4_schedule_lease_recovery(server
->nfs_client
);
4765 case -NFS4ERR_BADSESSION
:
4766 case -NFS4ERR_BADSLOT
:
4767 case -NFS4ERR_BAD_HIGH_SLOT
:
4768 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4769 case -NFS4ERR_DEADSESSION
:
4770 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
4774 * The show must go on: exit, but mark the
4775 * stateid as needing recovery.
4777 case -NFS4ERR_DELEG_REVOKED
:
4778 case -NFS4ERR_ADMIN_REVOKED
:
4779 case -NFS4ERR_BAD_STATEID
:
4780 case -NFS4ERR_OPENMODE
:
4781 nfs4_schedule_stateid_recovery(server
, state
);
4786 * User RPCSEC_GSS context has expired.
4787 * We cannot recover this stateid now, so
4788 * skip it and allow recovery thread to
4794 case -NFS4ERR_DENIED
:
4795 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4798 case -NFS4ERR_DELAY
:
4801 err
= nfs4_handle_exception(server
, err
, &exception
);
4802 } while (exception
.retry
);
4807 struct nfs_release_lockowner_data
{
4808 struct nfs4_lock_state
*lsp
;
4809 struct nfs_server
*server
;
4810 struct nfs_release_lockowner_args args
;
4813 static void nfs4_release_lockowner_release(void *calldata
)
4815 struct nfs_release_lockowner_data
*data
= calldata
;
4816 nfs4_free_lock_state(data
->server
, data
->lsp
);
4820 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4821 .rpc_release
= nfs4_release_lockowner_release
,
4824 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
4826 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4827 struct nfs_release_lockowner_data
*data
;
4828 struct rpc_message msg
= {
4829 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4832 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
4834 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4838 data
->server
= server
;
4839 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4840 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4841 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
4842 msg
.rpc_argp
= &data
->args
;
4843 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
4847 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4849 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
4850 const void *buf
, size_t buflen
,
4851 int flags
, int type
)
4853 if (strcmp(key
, "") != 0)
4856 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
4859 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
4860 void *buf
, size_t buflen
, int type
)
4862 if (strcmp(key
, "") != 0)
4865 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
4868 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
4869 size_t list_len
, const char *name
,
4870 size_t name_len
, int type
)
4872 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
4874 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4877 if (list
&& len
<= list_len
)
4878 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
4883 * nfs_fhget will use either the mounted_on_fileid or the fileid
4885 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4887 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
4888 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
4889 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4890 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
4893 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4894 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
4895 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4899 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4900 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4902 struct nfs_server
*server
= NFS_SERVER(dir
);
4904 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4906 struct nfs4_fs_locations_arg args
= {
4907 .dir_fh
= NFS_FH(dir
),
4912 struct nfs4_fs_locations_res res
= {
4913 .fs_locations
= fs_locations
,
4915 struct rpc_message msg
= {
4916 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4922 dprintk("%s: start\n", __func__
);
4924 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
4925 * is not supported */
4926 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
4927 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
4929 bitmask
[0] |= FATTR4_WORD0_FILEID
;
4931 nfs_fattr_init(&fs_locations
->fattr
);
4932 fs_locations
->server
= server
;
4933 fs_locations
->nlocations
= 0;
4934 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4935 dprintk("%s: returned status = %d\n", __func__
, status
);
4939 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4942 struct nfs4_secinfo_arg args
= {
4943 .dir_fh
= NFS_FH(dir
),
4946 struct nfs4_secinfo_res res
= {
4949 struct rpc_message msg
= {
4950 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
4955 dprintk("NFS call secinfo %s\n", name
->name
);
4956 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4957 dprintk("NFS reply secinfo: %d\n", status
);
4961 static int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
4962 struct nfs4_secinfo_flavors
*flavors
)
4964 struct nfs4_exception exception
= { };
4967 err
= nfs4_handle_exception(NFS_SERVER(dir
),
4968 _nfs4_proc_secinfo(dir
, name
, flavors
),
4970 } while (exception
.retry
);
4974 #ifdef CONFIG_NFS_V4_1
4976 * Check the exchange flags returned by the server for invalid flags, having
4977 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
4980 static int nfs4_check_cl_exchange_flags(u32 flags
)
4982 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
4984 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
4985 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
4987 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
4991 return -NFS4ERR_INVAL
;
4995 nfs41_same_server_scope(struct server_scope
*a
, struct server_scope
*b
)
4997 if (a
->server_scope_sz
== b
->server_scope_sz
&&
4998 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5005 * nfs4_proc_exchange_id()
5007 * Since the clientid has expired, all compounds using sessions
5008 * associated with the stale clientid will be returning
5009 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5010 * be in some phase of session reset.
5012 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5014 nfs4_verifier verifier
;
5015 struct nfs41_exchange_id_args args
= {
5016 .verifier
= &verifier
,
5018 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5020 struct nfs41_exchange_id_res res
= {
5024 struct rpc_message msg
= {
5025 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5031 dprintk("--> %s\n", __func__
);
5032 BUG_ON(clp
== NULL
);
5034 nfs4_construct_boot_verifier(clp
, &verifier
);
5036 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
5039 init_utsname()->nodename
,
5040 init_utsname()->domainname
,
5041 clp
->cl_rpcclient
->cl_auth
->au_flavor
);
5043 res
.server_scope
= kzalloc(sizeof(struct server_scope
), GFP_KERNEL
);
5044 if (unlikely(!res
.server_scope
)) {
5049 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_KERNEL
);
5050 if (unlikely(!res
.impl_id
)) {
5052 goto out_server_scope
;
5055 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5057 status
= nfs4_check_cl_exchange_flags(clp
->cl_exchange_flags
);
5060 /* use the most recent implementation id */
5061 kfree(clp
->impl_id
);
5062 clp
->impl_id
= res
.impl_id
;
5067 if (clp
->server_scope
&&
5068 !nfs41_same_server_scope(clp
->server_scope
,
5069 res
.server_scope
)) {
5070 dprintk("%s: server_scope mismatch detected\n",
5072 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5073 kfree(clp
->server_scope
);
5074 clp
->server_scope
= NULL
;
5077 if (!clp
->server_scope
) {
5078 clp
->server_scope
= res
.server_scope
;
5084 kfree(res
.server_scope
);
5087 dprintk("%s: Server Implementation ID: "
5088 "domain: %s, name: %s, date: %llu,%u\n",
5089 __func__
, clp
->impl_id
->domain
, clp
->impl_id
->name
,
5090 clp
->impl_id
->date
.seconds
,
5091 clp
->impl_id
->date
.nseconds
);
5092 dprintk("<-- %s status= %d\n", __func__
, status
);
5096 struct nfs4_get_lease_time_data
{
5097 struct nfs4_get_lease_time_args
*args
;
5098 struct nfs4_get_lease_time_res
*res
;
5099 struct nfs_client
*clp
;
5102 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5106 struct nfs4_get_lease_time_data
*data
=
5107 (struct nfs4_get_lease_time_data
*)calldata
;
5109 dprintk("--> %s\n", __func__
);
5110 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5111 /* just setup sequence, do not trigger session recovery
5112 since we're invoked within one */
5113 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
5114 &data
->args
->la_seq_args
,
5115 &data
->res
->lr_seq_res
, task
);
5117 BUG_ON(ret
== -EAGAIN
);
5118 rpc_call_start(task
);
5119 dprintk("<-- %s\n", __func__
);
5123 * Called from nfs4_state_manager thread for session setup, so don't recover
5124 * from sequence operation or clientid errors.
5126 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5128 struct nfs4_get_lease_time_data
*data
=
5129 (struct nfs4_get_lease_time_data
*)calldata
;
5131 dprintk("--> %s\n", __func__
);
5132 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5134 switch (task
->tk_status
) {
5135 case -NFS4ERR_DELAY
:
5136 case -NFS4ERR_GRACE
:
5137 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5138 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5139 task
->tk_status
= 0;
5141 case -NFS4ERR_RETRY_UNCACHED_REP
:
5142 rpc_restart_call_prepare(task
);
5145 dprintk("<-- %s\n", __func__
);
5148 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5149 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5150 .rpc_call_done
= nfs4_get_lease_time_done
,
5153 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5155 struct rpc_task
*task
;
5156 struct nfs4_get_lease_time_args args
;
5157 struct nfs4_get_lease_time_res res
= {
5158 .lr_fsinfo
= fsinfo
,
5160 struct nfs4_get_lease_time_data data
= {
5165 struct rpc_message msg
= {
5166 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5170 struct rpc_task_setup task_setup
= {
5171 .rpc_client
= clp
->cl_rpcclient
,
5172 .rpc_message
= &msg
,
5173 .callback_ops
= &nfs4_get_lease_time_ops
,
5174 .callback_data
= &data
,
5175 .flags
= RPC_TASK_TIMEOUT
,
5179 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5180 dprintk("--> %s\n", __func__
);
5181 task
= rpc_run_task(&task_setup
);
5184 status
= PTR_ERR(task
);
5186 status
= task
->tk_status
;
5189 dprintk("<-- %s return %d\n", __func__
, status
);
5194 static struct nfs4_slot
*nfs4_alloc_slots(u32 max_slots
, gfp_t gfp_flags
)
5196 return kcalloc(max_slots
, sizeof(struct nfs4_slot
), gfp_flags
);
5199 static void nfs4_add_and_init_slots(struct nfs4_slot_table
*tbl
,
5200 struct nfs4_slot
*new,
5204 struct nfs4_slot
*old
= NULL
;
5207 spin_lock(&tbl
->slot_tbl_lock
);
5211 tbl
->max_slots
= max_slots
;
5213 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
5214 for (i
= 0; i
< tbl
->max_slots
; i
++)
5215 tbl
->slots
[i
].seq_nr
= ivalue
;
5216 spin_unlock(&tbl
->slot_tbl_lock
);
5221 * (re)Initialise a slot table
5223 static int nfs4_realloc_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
5226 struct nfs4_slot
*new = NULL
;
5229 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
5230 max_reqs
, tbl
->max_slots
);
5232 /* Does the newly negotiated max_reqs match the existing slot table? */
5233 if (max_reqs
!= tbl
->max_slots
) {
5234 new = nfs4_alloc_slots(max_reqs
, GFP_NOFS
);
5240 nfs4_add_and_init_slots(tbl
, new, max_reqs
, ivalue
);
5241 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5242 tbl
, tbl
->slots
, tbl
->max_slots
);
5244 dprintk("<-- %s: return %d\n", __func__
, ret
);
5248 /* Destroy the slot table */
5249 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
5251 if (session
->fc_slot_table
.slots
!= NULL
) {
5252 kfree(session
->fc_slot_table
.slots
);
5253 session
->fc_slot_table
.slots
= NULL
;
5255 if (session
->bc_slot_table
.slots
!= NULL
) {
5256 kfree(session
->bc_slot_table
.slots
);
5257 session
->bc_slot_table
.slots
= NULL
;
5263 * Initialize or reset the forechannel and backchannel tables
5265 static int nfs4_setup_session_slot_tables(struct nfs4_session
*ses
)
5267 struct nfs4_slot_table
*tbl
;
5270 dprintk("--> %s\n", __func__
);
5272 tbl
= &ses
->fc_slot_table
;
5273 status
= nfs4_realloc_slot_table(tbl
, ses
->fc_attrs
.max_reqs
, 1);
5274 if (status
) /* -ENOMEM */
5277 tbl
= &ses
->bc_slot_table
;
5278 status
= nfs4_realloc_slot_table(tbl
, ses
->bc_attrs
.max_reqs
, 0);
5279 if (status
&& tbl
->slots
== NULL
)
5280 /* Fore and back channel share a connection so get
5281 * both slot tables or neither */
5282 nfs4_destroy_slot_tables(ses
);
5286 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5288 struct nfs4_session
*session
;
5289 struct nfs4_slot_table
*tbl
;
5291 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5295 tbl
= &session
->fc_slot_table
;
5296 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5297 spin_lock_init(&tbl
->slot_tbl_lock
);
5298 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5299 init_completion(&tbl
->complete
);
5301 tbl
= &session
->bc_slot_table
;
5302 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5303 spin_lock_init(&tbl
->slot_tbl_lock
);
5304 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5305 init_completion(&tbl
->complete
);
5307 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5313 void nfs4_destroy_session(struct nfs4_session
*session
)
5315 struct rpc_xprt
*xprt
;
5317 nfs4_proc_destroy_session(session
);
5320 xprt
= rcu_dereference(session
->clp
->cl_rpcclient
->cl_xprt
);
5322 dprintk("%s Destroy backchannel for xprt %p\n",
5324 xprt_destroy_backchannel(xprt
, NFS41_BC_MIN_CALLBACKS
);
5325 nfs4_destroy_slot_tables(session
);
5330 * Initialize the values to be used by the client in CREATE_SESSION
5331 * If nfs4_init_session set the fore channel request and response sizes,
5334 * Set the back channel max_resp_sz_cached to zero to force the client to
5335 * always set csa_cachethis to FALSE because the current implementation
5336 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5338 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5340 struct nfs4_session
*session
= args
->client
->cl_session
;
5341 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5342 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5345 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5347 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5348 /* Fore channel attributes */
5349 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5350 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5351 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5352 args
->fc_attrs
.max_reqs
= max_session_slots
;
5354 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5355 "max_ops=%u max_reqs=%u\n",
5357 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5358 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5360 /* Back channel attributes */
5361 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5362 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5363 args
->bc_attrs
.max_resp_sz_cached
= 0;
5364 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5365 args
->bc_attrs
.max_reqs
= 1;
5367 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5368 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5370 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5371 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5372 args
->bc_attrs
.max_reqs
);
5375 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5377 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5378 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5380 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5383 * Our requested max_ops is the minimum we need; we're not
5384 * prepared to break up compounds into smaller pieces than that.
5385 * So, no point even trying to continue if the server won't
5388 if (rcvd
->max_ops
< sent
->max_ops
)
5390 if (rcvd
->max_reqs
== 0)
5392 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5393 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5397 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5399 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5400 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5402 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5404 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5406 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5408 /* These would render the backchannel useless: */
5409 if (rcvd
->max_ops
!= sent
->max_ops
)
5411 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5416 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5417 struct nfs4_session
*session
)
5421 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5424 return nfs4_verify_back_channel_attrs(args
, session
);
5427 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
5429 struct nfs4_session
*session
= clp
->cl_session
;
5430 struct nfs41_create_session_args args
= {
5432 .cb_program
= NFS4_CALLBACK
,
5434 struct nfs41_create_session_res res
= {
5437 struct rpc_message msg
= {
5438 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5444 nfs4_init_channel_attrs(&args
);
5445 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5447 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5450 /* Verify the session's negotiated channel_attrs values */
5451 status
= nfs4_verify_channel_attrs(&args
, session
);
5453 /* Increment the clientid slot sequence id */
5461 * Issues a CREATE_SESSION operation to the server.
5462 * It is the responsibility of the caller to verify the session is
5463 * expired before calling this routine.
5465 int nfs4_proc_create_session(struct nfs_client
*clp
)
5469 struct nfs4_session
*session
= clp
->cl_session
;
5471 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5473 status
= _nfs4_proc_create_session(clp
);
5477 /* Init or reset the session slot tables */
5478 status
= nfs4_setup_session_slot_tables(session
);
5479 dprintk("slot table setup returned %d\n", status
);
5483 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5484 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5485 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5487 dprintk("<-- %s\n", __func__
);
5492 * Issue the over-the-wire RPC DESTROY_SESSION.
5493 * The caller must serialize access to this routine.
5495 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
5498 struct rpc_message msg
;
5500 dprintk("--> nfs4_proc_destroy_session\n");
5502 /* session is still being setup */
5503 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5506 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
5507 msg
.rpc_argp
= session
;
5508 msg
.rpc_resp
= NULL
;
5509 msg
.rpc_cred
= NULL
;
5510 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5514 "NFS: Got error %d from the server on DESTROY_SESSION. "
5515 "Session has been destroyed regardless...\n", status
);
5517 dprintk("<-- nfs4_proc_destroy_session\n");
5521 int nfs4_init_session(struct nfs_server
*server
)
5523 struct nfs_client
*clp
= server
->nfs_client
;
5524 struct nfs4_session
*session
;
5525 unsigned int rsize
, wsize
;
5528 if (!nfs4_has_session(clp
))
5531 session
= clp
->cl_session
;
5532 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5535 rsize
= server
->rsize
;
5537 rsize
= NFS_MAX_FILE_IO_SIZE
;
5538 wsize
= server
->wsize
;
5540 wsize
= NFS_MAX_FILE_IO_SIZE
;
5542 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5543 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5545 ret
= nfs4_recover_expired_lease(server
);
5547 ret
= nfs4_check_client_ready(clp
);
5551 int nfs4_init_ds_session(struct nfs_client
*clp
)
5553 struct nfs4_session
*session
= clp
->cl_session
;
5556 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5559 ret
= nfs4_client_recover_expired_lease(clp
);
5561 /* Test for the DS role */
5562 if (!is_ds_client(clp
))
5565 ret
= nfs4_check_client_ready(clp
);
5569 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5573 * Renew the cl_session lease.
5575 struct nfs4_sequence_data
{
5576 struct nfs_client
*clp
;
5577 struct nfs4_sequence_args args
;
5578 struct nfs4_sequence_res res
;
5581 static void nfs41_sequence_release(void *data
)
5583 struct nfs4_sequence_data
*calldata
= data
;
5584 struct nfs_client
*clp
= calldata
->clp
;
5586 if (atomic_read(&clp
->cl_count
) > 1)
5587 nfs4_schedule_state_renewal(clp
);
5588 nfs_put_client(clp
);
5592 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5594 switch(task
->tk_status
) {
5595 case -NFS4ERR_DELAY
:
5596 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5599 nfs4_schedule_lease_recovery(clp
);
5604 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5606 struct nfs4_sequence_data
*calldata
= data
;
5607 struct nfs_client
*clp
= calldata
->clp
;
5609 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5612 if (task
->tk_status
< 0) {
5613 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5614 if (atomic_read(&clp
->cl_count
) == 1)
5617 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5618 rpc_restart_call_prepare(task
);
5622 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5624 dprintk("<-- %s\n", __func__
);
5627 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5629 struct nfs4_sequence_data
*calldata
= data
;
5630 struct nfs_client
*clp
= calldata
->clp
;
5631 struct nfs4_sequence_args
*args
;
5632 struct nfs4_sequence_res
*res
;
5634 args
= task
->tk_msg
.rpc_argp
;
5635 res
= task
->tk_msg
.rpc_resp
;
5637 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
))
5639 rpc_call_start(task
);
5642 static const struct rpc_call_ops nfs41_sequence_ops
= {
5643 .rpc_call_done
= nfs41_sequence_call_done
,
5644 .rpc_call_prepare
= nfs41_sequence_prepare
,
5645 .rpc_release
= nfs41_sequence_release
,
5648 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5650 struct nfs4_sequence_data
*calldata
;
5651 struct rpc_message msg
= {
5652 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5655 struct rpc_task_setup task_setup_data
= {
5656 .rpc_client
= clp
->cl_rpcclient
,
5657 .rpc_message
= &msg
,
5658 .callback_ops
= &nfs41_sequence_ops
,
5659 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5662 if (!atomic_inc_not_zero(&clp
->cl_count
))
5663 return ERR_PTR(-EIO
);
5664 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5665 if (calldata
== NULL
) {
5666 nfs_put_client(clp
);
5667 return ERR_PTR(-ENOMEM
);
5669 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
5670 msg
.rpc_argp
= &calldata
->args
;
5671 msg
.rpc_resp
= &calldata
->res
;
5672 calldata
->clp
= clp
;
5673 task_setup_data
.callback_data
= calldata
;
5675 return rpc_run_task(&task_setup_data
);
5678 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
5680 struct rpc_task
*task
;
5683 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
5685 task
= _nfs41_proc_sequence(clp
, cred
);
5687 ret
= PTR_ERR(task
);
5689 rpc_put_task_async(task
);
5690 dprintk("<-- %s status=%d\n", __func__
, ret
);
5694 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5696 struct rpc_task
*task
;
5699 task
= _nfs41_proc_sequence(clp
, cred
);
5701 ret
= PTR_ERR(task
);
5704 ret
= rpc_wait_for_completion_task(task
);
5706 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5708 if (task
->tk_status
== 0)
5709 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5710 ret
= task
->tk_status
;
5714 dprintk("<-- %s status=%d\n", __func__
, ret
);
5718 struct nfs4_reclaim_complete_data
{
5719 struct nfs_client
*clp
;
5720 struct nfs41_reclaim_complete_args arg
;
5721 struct nfs41_reclaim_complete_res res
;
5724 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5726 struct nfs4_reclaim_complete_data
*calldata
= data
;
5728 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5729 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5730 &calldata
->arg
.seq_args
,
5731 &calldata
->res
.seq_res
, task
))
5734 rpc_call_start(task
);
5737 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5739 switch(task
->tk_status
) {
5741 case -NFS4ERR_COMPLETE_ALREADY
:
5742 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5744 case -NFS4ERR_DELAY
:
5745 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5747 case -NFS4ERR_RETRY_UNCACHED_REP
:
5750 nfs4_schedule_lease_recovery(clp
);
5755 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5757 struct nfs4_reclaim_complete_data
*calldata
= data
;
5758 struct nfs_client
*clp
= calldata
->clp
;
5759 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5761 dprintk("--> %s\n", __func__
);
5762 if (!nfs41_sequence_done(task
, res
))
5765 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5766 rpc_restart_call_prepare(task
);
5769 dprintk("<-- %s\n", __func__
);
5772 static void nfs4_free_reclaim_complete_data(void *data
)
5774 struct nfs4_reclaim_complete_data
*calldata
= data
;
5779 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5780 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5781 .rpc_call_done
= nfs4_reclaim_complete_done
,
5782 .rpc_release
= nfs4_free_reclaim_complete_data
,
5786 * Issue a global reclaim complete.
5788 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5790 struct nfs4_reclaim_complete_data
*calldata
;
5791 struct rpc_task
*task
;
5792 struct rpc_message msg
= {
5793 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5795 struct rpc_task_setup task_setup_data
= {
5796 .rpc_client
= clp
->cl_rpcclient
,
5797 .rpc_message
= &msg
,
5798 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5799 .flags
= RPC_TASK_ASYNC
,
5801 int status
= -ENOMEM
;
5803 dprintk("--> %s\n", __func__
);
5804 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5805 if (calldata
== NULL
)
5807 calldata
->clp
= clp
;
5808 calldata
->arg
.one_fs
= 0;
5810 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
5811 msg
.rpc_argp
= &calldata
->arg
;
5812 msg
.rpc_resp
= &calldata
->res
;
5813 task_setup_data
.callback_data
= calldata
;
5814 task
= rpc_run_task(&task_setup_data
);
5816 status
= PTR_ERR(task
);
5819 status
= nfs4_wait_for_completion_rpc_task(task
);
5821 status
= task
->tk_status
;
5825 dprintk("<-- %s status=%d\n", __func__
, status
);
5830 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
5832 struct nfs4_layoutget
*lgp
= calldata
;
5833 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5835 dprintk("--> %s\n", __func__
);
5836 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
5837 * right now covering the LAYOUTGET we are about to send.
5838 * However, that is not so catastrophic, and there seems
5839 * to be no way to prevent it completely.
5841 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
5842 &lgp
->res
.seq_res
, task
))
5844 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
5845 NFS_I(lgp
->args
.inode
)->layout
,
5846 lgp
->args
.ctx
->state
)) {
5847 rpc_exit(task
, NFS4_OK
);
5850 rpc_call_start(task
);
5853 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
5855 struct nfs4_layoutget
*lgp
= calldata
;
5856 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5858 dprintk("--> %s\n", __func__
);
5860 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
5863 switch (task
->tk_status
) {
5866 case -NFS4ERR_LAYOUTTRYLATER
:
5867 case -NFS4ERR_RECALLCONFLICT
:
5868 task
->tk_status
= -NFS4ERR_DELAY
;
5871 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5872 rpc_restart_call_prepare(task
);
5876 dprintk("<-- %s\n", __func__
);
5879 static void nfs4_layoutget_release(void *calldata
)
5881 struct nfs4_layoutget
*lgp
= calldata
;
5883 dprintk("--> %s\n", __func__
);
5884 put_nfs_open_context(lgp
->args
.ctx
);
5886 dprintk("<-- %s\n", __func__
);
5889 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
5890 .rpc_call_prepare
= nfs4_layoutget_prepare
,
5891 .rpc_call_done
= nfs4_layoutget_done
,
5892 .rpc_release
= nfs4_layoutget_release
,
5895 int nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
)
5897 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5898 struct rpc_task
*task
;
5899 struct rpc_message msg
= {
5900 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
5901 .rpc_argp
= &lgp
->args
,
5902 .rpc_resp
= &lgp
->res
,
5904 struct rpc_task_setup task_setup_data
= {
5905 .rpc_client
= server
->client
,
5906 .rpc_message
= &msg
,
5907 .callback_ops
= &nfs4_layoutget_call_ops
,
5908 .callback_data
= lgp
,
5909 .flags
= RPC_TASK_ASYNC
,
5913 dprintk("--> %s\n", __func__
);
5915 lgp
->res
.layoutp
= &lgp
->args
.layout
;
5916 lgp
->res
.seq_res
.sr_slot
= NULL
;
5917 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
5918 task
= rpc_run_task(&task_setup_data
);
5920 return PTR_ERR(task
);
5921 status
= nfs4_wait_for_completion_rpc_task(task
);
5923 status
= task
->tk_status
;
5925 status
= pnfs_layout_process(lgp
);
5927 dprintk("<-- %s status=%d\n", __func__
, status
);
5932 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
5934 struct nfs4_layoutreturn
*lrp
= calldata
;
5936 dprintk("--> %s\n", __func__
);
5937 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
5938 &lrp
->res
.seq_res
, task
))
5940 rpc_call_start(task
);
5943 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
5945 struct nfs4_layoutreturn
*lrp
= calldata
;
5946 struct nfs_server
*server
;
5947 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
5949 dprintk("--> %s\n", __func__
);
5951 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
5954 server
= NFS_SERVER(lrp
->args
.inode
);
5955 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5956 rpc_restart_call_prepare(task
);
5959 spin_lock(&lo
->plh_inode
->i_lock
);
5960 if (task
->tk_status
== 0) {
5961 if (lrp
->res
.lrs_present
) {
5962 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
5964 BUG_ON(!list_empty(&lo
->plh_segs
));
5966 lo
->plh_block_lgets
--;
5967 spin_unlock(&lo
->plh_inode
->i_lock
);
5968 dprintk("<-- %s\n", __func__
);
5971 static void nfs4_layoutreturn_release(void *calldata
)
5973 struct nfs4_layoutreturn
*lrp
= calldata
;
5975 dprintk("--> %s\n", __func__
);
5976 put_layout_hdr(lrp
->args
.layout
);
5978 dprintk("<-- %s\n", __func__
);
5981 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
5982 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
5983 .rpc_call_done
= nfs4_layoutreturn_done
,
5984 .rpc_release
= nfs4_layoutreturn_release
,
5987 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
5989 struct rpc_task
*task
;
5990 struct rpc_message msg
= {
5991 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
5992 .rpc_argp
= &lrp
->args
,
5993 .rpc_resp
= &lrp
->res
,
5995 struct rpc_task_setup task_setup_data
= {
5996 .rpc_client
= lrp
->clp
->cl_rpcclient
,
5997 .rpc_message
= &msg
,
5998 .callback_ops
= &nfs4_layoutreturn_call_ops
,
5999 .callback_data
= lrp
,
6003 dprintk("--> %s\n", __func__
);
6004 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6005 task
= rpc_run_task(&task_setup_data
);
6007 return PTR_ERR(task
);
6008 status
= task
->tk_status
;
6009 dprintk("<-- %s status=%d\n", __func__
, status
);
6015 * Retrieve the list of Data Server devices from the MDS.
6017 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6018 const struct nfs_fh
*fh
,
6019 struct pnfs_devicelist
*devlist
)
6021 struct nfs4_getdevicelist_args args
= {
6023 .layoutclass
= server
->pnfs_curr_ld
->id
,
6025 struct nfs4_getdevicelist_res res
= {
6028 struct rpc_message msg
= {
6029 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6035 dprintk("--> %s\n", __func__
);
6036 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6038 dprintk("<-- %s status=%d\n", __func__
, status
);
6042 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6043 const struct nfs_fh
*fh
,
6044 struct pnfs_devicelist
*devlist
)
6046 struct nfs4_exception exception
= { };
6050 err
= nfs4_handle_exception(server
,
6051 _nfs4_getdevicelist(server
, fh
, devlist
),
6053 } while (exception
.retry
);
6055 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6056 err
, devlist
->num_devs
);
6060 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6063 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6065 struct nfs4_getdeviceinfo_args args
= {
6068 struct nfs4_getdeviceinfo_res res
= {
6071 struct rpc_message msg
= {
6072 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6078 dprintk("--> %s\n", __func__
);
6079 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6080 dprintk("<-- %s status=%d\n", __func__
, status
);
6085 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6087 struct nfs4_exception exception
= { };
6091 err
= nfs4_handle_exception(server
,
6092 _nfs4_proc_getdeviceinfo(server
, pdev
),
6094 } while (exception
.retry
);
6097 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6099 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6101 struct nfs4_layoutcommit_data
*data
= calldata
;
6102 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6104 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
6105 &data
->res
.seq_res
, task
))
6107 rpc_call_start(task
);
6111 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6113 struct nfs4_layoutcommit_data
*data
= calldata
;
6114 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6116 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6119 switch (task
->tk_status
) { /* Just ignore these failures */
6120 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6121 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6122 case -NFS4ERR_BADLAYOUT
: /* no layout */
6123 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6124 task
->tk_status
= 0;
6127 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6131 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6132 rpc_restart_call_prepare(task
);
6138 static void nfs4_layoutcommit_release(void *calldata
)
6140 struct nfs4_layoutcommit_data
*data
= calldata
;
6141 struct pnfs_layout_segment
*lseg
, *tmp
;
6142 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
6144 pnfs_cleanup_layoutcommit(data
);
6145 /* Matched by references in pnfs_set_layoutcommit */
6146 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
6147 list_del_init(&lseg
->pls_lc_list
);
6148 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
6153 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
6154 smp_mb__after_clear_bit();
6155 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
6157 put_rpccred(data
->cred
);
6161 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6162 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6163 .rpc_call_done
= nfs4_layoutcommit_done
,
6164 .rpc_release
= nfs4_layoutcommit_release
,
6168 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6170 struct rpc_message msg
= {
6171 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6172 .rpc_argp
= &data
->args
,
6173 .rpc_resp
= &data
->res
,
6174 .rpc_cred
= data
->cred
,
6176 struct rpc_task_setup task_setup_data
= {
6177 .task
= &data
->task
,
6178 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6179 .rpc_message
= &msg
,
6180 .callback_ops
= &nfs4_layoutcommit_ops
,
6181 .callback_data
= data
,
6182 .flags
= RPC_TASK_ASYNC
,
6184 struct rpc_task
*task
;
6187 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6188 "lbw: %llu inode %lu\n",
6189 data
->task
.tk_pid
, sync
,
6190 data
->args
.lastbytewritten
,
6191 data
->args
.inode
->i_ino
);
6193 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6194 task
= rpc_run_task(&task_setup_data
);
6196 return PTR_ERR(task
);
6199 status
= nfs4_wait_for_completion_rpc_task(task
);
6202 status
= task
->tk_status
;
6204 dprintk("%s: status %d\n", __func__
, status
);
6210 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6211 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6213 struct nfs41_secinfo_no_name_args args
= {
6214 .style
= SECINFO_STYLE_CURRENT_FH
,
6216 struct nfs4_secinfo_res res
= {
6219 struct rpc_message msg
= {
6220 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6224 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6228 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6229 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6231 struct nfs4_exception exception
= { };
6234 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6237 case -NFS4ERR_WRONGSEC
:
6238 case -NFS4ERR_NOTSUPP
:
6241 err
= nfs4_handle_exception(server
, err
, &exception
);
6243 } while (exception
.retry
);
6249 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6250 struct nfs_fsinfo
*info
)
6254 rpc_authflavor_t flavor
;
6255 struct nfs4_secinfo_flavors
*flavors
;
6257 page
= alloc_page(GFP_KERNEL
);
6263 flavors
= page_address(page
);
6264 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6267 * Fall back on "guess and check" method if
6268 * the server doesn't support SECINFO_NO_NAME
6270 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6271 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6277 flavor
= nfs_find_best_sec(flavors
);
6279 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6289 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6292 struct nfs41_test_stateid_args args
= {
6295 struct nfs41_test_stateid_res res
;
6296 struct rpc_message msg
= {
6297 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6302 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6303 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6305 if (status
== NFS_OK
)
6310 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6312 struct nfs4_exception exception
= { };
6315 err
= nfs4_handle_exception(server
,
6316 _nfs41_test_stateid(server
, stateid
),
6318 } while (exception
.retry
);
6322 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6324 struct nfs41_free_stateid_args args
= {
6327 struct nfs41_free_stateid_res res
;
6328 struct rpc_message msg
= {
6329 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6334 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6335 return nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6338 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6340 struct nfs4_exception exception
= { };
6343 err
= nfs4_handle_exception(server
,
6344 _nfs4_free_stateid(server
, stateid
),
6346 } while (exception
.retry
);
6350 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6351 const nfs4_stateid
*s2
)
6353 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6356 if (s1
->seqid
== s2
->seqid
)
6358 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6364 #endif /* CONFIG_NFS_V4_1 */
6366 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6367 const nfs4_stateid
*s2
)
6369 return nfs4_stateid_match(s1
, s2
);
6373 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6374 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6375 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6376 .recover_open
= nfs4_open_reclaim
,
6377 .recover_lock
= nfs4_lock_reclaim
,
6378 .establish_clid
= nfs4_init_clientid
,
6379 .get_clid_cred
= nfs4_get_setclientid_cred
,
6382 #if defined(CONFIG_NFS_V4_1)
6383 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6384 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6385 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6386 .recover_open
= nfs4_open_reclaim
,
6387 .recover_lock
= nfs4_lock_reclaim
,
6388 .establish_clid
= nfs41_init_clientid
,
6389 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6390 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6392 #endif /* CONFIG_NFS_V4_1 */
6394 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6395 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6396 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6397 .recover_open
= nfs4_open_expired
,
6398 .recover_lock
= nfs4_lock_expired
,
6399 .establish_clid
= nfs4_init_clientid
,
6400 .get_clid_cred
= nfs4_get_setclientid_cred
,
6403 #if defined(CONFIG_NFS_V4_1)
6404 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6405 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6406 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6407 .recover_open
= nfs41_open_expired
,
6408 .recover_lock
= nfs41_lock_expired
,
6409 .establish_clid
= nfs41_init_clientid
,
6410 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6412 #endif /* CONFIG_NFS_V4_1 */
6414 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6415 .sched_state_renewal
= nfs4_proc_async_renew
,
6416 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6417 .renew_lease
= nfs4_proc_renew
,
6420 #if defined(CONFIG_NFS_V4_1)
6421 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6422 .sched_state_renewal
= nfs41_proc_async_sequence
,
6423 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6424 .renew_lease
= nfs4_proc_sequence
,
6428 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6430 .call_sync
= _nfs4_call_sync
,
6431 .match_stateid
= nfs4_match_stateid
,
6432 .find_root_sec
= nfs4_find_root_sec
,
6433 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6434 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6435 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6438 #if defined(CONFIG_NFS_V4_1)
6439 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6441 .call_sync
= _nfs4_call_sync_session
,
6442 .match_stateid
= nfs41_match_stateid
,
6443 .find_root_sec
= nfs41_find_root_sec
,
6444 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6445 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6446 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6450 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6451 [0] = &nfs_v4_0_minor_ops
,
6452 #if defined(CONFIG_NFS_V4_1)
6453 [1] = &nfs_v4_1_minor_ops
,
6457 static const struct inode_operations nfs4_file_inode_operations
= {
6458 .permission
= nfs_permission
,
6459 .getattr
= nfs_getattr
,
6460 .setattr
= nfs_setattr
,
6461 .getxattr
= generic_getxattr
,
6462 .setxattr
= generic_setxattr
,
6463 .listxattr
= generic_listxattr
,
6464 .removexattr
= generic_removexattr
,
6467 const struct nfs_rpc_ops nfs_v4_clientops
= {
6468 .version
= 4, /* protocol version */
6469 .dentry_ops
= &nfs4_dentry_operations
,
6470 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6471 .file_inode_ops
= &nfs4_file_inode_operations
,
6472 .file_ops
= &nfs4_file_operations
,
6473 .getroot
= nfs4_proc_get_root
,
6474 .getattr
= nfs4_proc_getattr
,
6475 .setattr
= nfs4_proc_setattr
,
6476 .lookup
= nfs4_proc_lookup
,
6477 .access
= nfs4_proc_access
,
6478 .readlink
= nfs4_proc_readlink
,
6479 .create
= nfs4_proc_create
,
6480 .remove
= nfs4_proc_remove
,
6481 .unlink_setup
= nfs4_proc_unlink_setup
,
6482 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
6483 .unlink_done
= nfs4_proc_unlink_done
,
6484 .rename
= nfs4_proc_rename
,
6485 .rename_setup
= nfs4_proc_rename_setup
,
6486 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
6487 .rename_done
= nfs4_proc_rename_done
,
6488 .link
= nfs4_proc_link
,
6489 .symlink
= nfs4_proc_symlink
,
6490 .mkdir
= nfs4_proc_mkdir
,
6491 .rmdir
= nfs4_proc_remove
,
6492 .readdir
= nfs4_proc_readdir
,
6493 .mknod
= nfs4_proc_mknod
,
6494 .statfs
= nfs4_proc_statfs
,
6495 .fsinfo
= nfs4_proc_fsinfo
,
6496 .pathconf
= nfs4_proc_pathconf
,
6497 .set_capabilities
= nfs4_server_capabilities
,
6498 .decode_dirent
= nfs4_decode_dirent
,
6499 .read_setup
= nfs4_proc_read_setup
,
6500 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
6501 .read_done
= nfs4_read_done
,
6502 .write_setup
= nfs4_proc_write_setup
,
6503 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
6504 .write_done
= nfs4_write_done
,
6505 .commit_setup
= nfs4_proc_commit_setup
,
6506 .commit_done
= nfs4_commit_done
,
6507 .lock
= nfs4_proc_lock
,
6508 .clear_acl_cache
= nfs4_zap_acl_attr
,
6509 .close_context
= nfs4_close_context
,
6510 .open_context
= nfs4_atomic_open
,
6511 .init_client
= nfs4_init_client
,
6512 .secinfo
= nfs4_proc_secinfo
,
6515 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6516 .prefix
= XATTR_NAME_NFSV4_ACL
,
6517 .list
= nfs4_xattr_list_nfs4_acl
,
6518 .get
= nfs4_xattr_get_nfs4_acl
,
6519 .set
= nfs4_xattr_set_nfs4_acl
,
6522 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6523 &nfs4_xattr_nfs4_acl_handler
,
6527 module_param(max_session_slots
, ushort
, 0644);
6528 MODULE_PARM_DESC(max_session_slots
, "Maximum number of outstanding NFSv4.1 "
6529 "requests the client will negotiate");