4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/sunrpc/gss_api.h>
47 #include <linux/nfs.h>
48 #include <linux/nfs4.h>
49 #include <linux/nfs_fs.h>
50 #include <linux/nfs_page.h>
51 #include <linux/nfs_mount.h>
52 #include <linux/namei.h>
53 #include <linux/mount.h>
54 #include <linux/module.h>
55 #include <linux/nfs_idmap.h>
56 #include <linux/sunrpc/bc_xprt.h>
57 #include <linux/xattr.h>
58 #include <linux/utsname.h>
59 #include <linux/freezer.h>
62 #include "delegation.h"
68 #define NFSDBG_FACILITY NFSDBG_PROC
70 #define NFS4_POLL_RETRY_MIN (HZ/10)
71 #define NFS4_POLL_RETRY_MAX (15*HZ)
73 #define NFS4_MAX_LOOP_ON_RECOVER (10)
76 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
77 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
78 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
79 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
80 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
81 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
82 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
83 struct nfs4_state
*state
);
84 #ifdef CONFIG_NFS_V4_1
85 static int nfs41_test_stateid(struct nfs_server
*, struct nfs4_state
*);
86 static int nfs41_free_stateid(struct nfs_server
*, struct nfs4_state
*);
88 /* Prevent leaks of NFSv4 errors into userland */
89 static int nfs4_map_errors(int err
)
94 case -NFS4ERR_RESOURCE
:
96 case -NFS4ERR_WRONGSEC
:
98 case -NFS4ERR_BADOWNER
:
99 case -NFS4ERR_BADNAME
:
102 dprintk("%s could not handle NFSv4 error %d\n",
110 * This is our standard bitmap for GETATTR requests.
112 const u32 nfs4_fattr_bitmap
[2] = {
114 | FATTR4_WORD0_CHANGE
117 | FATTR4_WORD0_FILEID
,
119 | FATTR4_WORD1_NUMLINKS
121 | FATTR4_WORD1_OWNER_GROUP
122 | FATTR4_WORD1_RAWDEV
123 | FATTR4_WORD1_SPACE_USED
124 | FATTR4_WORD1_TIME_ACCESS
125 | FATTR4_WORD1_TIME_METADATA
126 | FATTR4_WORD1_TIME_MODIFY
129 const u32 nfs4_statfs_bitmap
[2] = {
130 FATTR4_WORD0_FILES_AVAIL
131 | FATTR4_WORD0_FILES_FREE
132 | FATTR4_WORD0_FILES_TOTAL
,
133 FATTR4_WORD1_SPACE_AVAIL
134 | FATTR4_WORD1_SPACE_FREE
135 | FATTR4_WORD1_SPACE_TOTAL
138 const u32 nfs4_pathconf_bitmap
[2] = {
140 | FATTR4_WORD0_MAXNAME
,
144 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
145 | FATTR4_WORD0_MAXREAD
146 | FATTR4_WORD0_MAXWRITE
147 | FATTR4_WORD0_LEASE_TIME
,
148 FATTR4_WORD1_TIME_DELTA
149 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
150 FATTR4_WORD2_LAYOUT_BLKSIZE
153 const u32 nfs4_fs_locations_bitmap
[2] = {
155 | FATTR4_WORD0_CHANGE
158 | FATTR4_WORD0_FILEID
159 | FATTR4_WORD0_FS_LOCATIONS
,
161 | FATTR4_WORD1_NUMLINKS
163 | FATTR4_WORD1_OWNER_GROUP
164 | FATTR4_WORD1_RAWDEV
165 | FATTR4_WORD1_SPACE_USED
166 | FATTR4_WORD1_TIME_ACCESS
167 | FATTR4_WORD1_TIME_METADATA
168 | FATTR4_WORD1_TIME_MODIFY
169 | FATTR4_WORD1_MOUNTED_ON_FILEID
172 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
173 struct nfs4_readdir_arg
*readdir
)
177 BUG_ON(readdir
->count
< 80);
179 readdir
->cookie
= cookie
;
180 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
185 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
190 * NFSv4 servers do not return entries for '.' and '..'
191 * Therefore, we fake these entries here. We let '.'
192 * have cookie 0 and '..' have cookie 1. Note that
193 * when talking to the server, we always send cookie 0
196 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
199 *p
++ = xdr_one
; /* next */
200 *p
++ = xdr_zero
; /* cookie, first word */
201 *p
++ = xdr_one
; /* cookie, second word */
202 *p
++ = xdr_one
; /* entry len */
203 memcpy(p
, ".\0\0\0", 4); /* entry */
205 *p
++ = xdr_one
; /* bitmap length */
206 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
207 *p
++ = htonl(8); /* attribute buffer length */
208 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
211 *p
++ = xdr_one
; /* next */
212 *p
++ = xdr_zero
; /* cookie, first word */
213 *p
++ = xdr_two
; /* cookie, second word */
214 *p
++ = xdr_two
; /* entry len */
215 memcpy(p
, "..\0\0", 4); /* entry */
217 *p
++ = xdr_one
; /* bitmap length */
218 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
219 *p
++ = htonl(8); /* attribute buffer length */
220 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
222 readdir
->pgbase
= (char *)p
- (char *)start
;
223 readdir
->count
-= readdir
->pgbase
;
224 kunmap_atomic(start
, KM_USER0
);
227 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
233 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
234 nfs_wait_bit_killable
, TASK_KILLABLE
);
238 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
245 *timeout
= NFS4_POLL_RETRY_MIN
;
246 if (*timeout
> NFS4_POLL_RETRY_MAX
)
247 *timeout
= NFS4_POLL_RETRY_MAX
;
248 freezable_schedule_timeout_killable(*timeout
);
249 if (fatal_signal_pending(current
))
255 /* This is the error handling routine for processes that are allowed
258 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
260 struct nfs_client
*clp
= server
->nfs_client
;
261 struct nfs4_state
*state
= exception
->state
;
262 struct inode
*inode
= exception
->inode
;
265 exception
->retry
= 0;
269 case -NFS4ERR_OPENMODE
:
270 if (nfs_have_delegation(inode
, FMODE_READ
)) {
271 nfs_inode_return_delegation(inode
);
272 exception
->retry
= 1;
277 nfs4_schedule_stateid_recovery(server
, state
);
278 goto wait_on_recovery
;
279 case -NFS4ERR_DELEG_REVOKED
:
280 case -NFS4ERR_ADMIN_REVOKED
:
281 case -NFS4ERR_BAD_STATEID
:
283 nfs_remove_bad_delegation(state
->inode
);
286 nfs4_schedule_stateid_recovery(server
, state
);
287 goto wait_on_recovery
;
288 case -NFS4ERR_EXPIRED
:
290 nfs4_schedule_stateid_recovery(server
, state
);
291 case -NFS4ERR_STALE_STATEID
:
292 case -NFS4ERR_STALE_CLIENTID
:
293 nfs4_schedule_lease_recovery(clp
);
294 goto wait_on_recovery
;
295 #if defined(CONFIG_NFS_V4_1)
296 case -NFS4ERR_BADSESSION
:
297 case -NFS4ERR_BADSLOT
:
298 case -NFS4ERR_BAD_HIGH_SLOT
:
299 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
300 case -NFS4ERR_DEADSESSION
:
301 case -NFS4ERR_SEQ_FALSE_RETRY
:
302 case -NFS4ERR_SEQ_MISORDERED
:
303 dprintk("%s ERROR: %d Reset session\n", __func__
,
305 nfs4_schedule_session_recovery(clp
->cl_session
);
306 exception
->retry
= 1;
308 #endif /* defined(CONFIG_NFS_V4_1) */
309 case -NFS4ERR_FILE_OPEN
:
310 if (exception
->timeout
> HZ
) {
311 /* We have retried a decent amount, time to
320 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
323 case -NFS4ERR_RETRY_UNCACHED_REP
:
324 case -NFS4ERR_OLD_STATEID
:
325 exception
->retry
= 1;
327 case -NFS4ERR_BADOWNER
:
328 /* The following works around a Linux server bug! */
329 case -NFS4ERR_BADNAME
:
330 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
331 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
332 exception
->retry
= 1;
333 printk(KERN_WARNING
"NFS: v4 server %s "
334 "does not accept raw "
336 "Reenabling the idmapper.\n",
337 server
->nfs_client
->cl_hostname
);
340 /* We failed to handle the error */
341 return nfs4_map_errors(ret
);
343 ret
= nfs4_wait_clnt_recover(clp
);
345 exception
->retry
= 1;
350 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
352 spin_lock(&clp
->cl_lock
);
353 if (time_before(clp
->cl_last_renewal
,timestamp
))
354 clp
->cl_last_renewal
= timestamp
;
355 spin_unlock(&clp
->cl_lock
);
358 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
360 do_renew_lease(server
->nfs_client
, timestamp
);
363 #if defined(CONFIG_NFS_V4_1)
366 * nfs4_free_slot - free a slot and efficiently update slot table.
368 * freeing a slot is trivially done by clearing its respective bit
370 * If the freed slotid equals highest_used_slotid we want to update it
371 * so that the server would be able to size down the slot table if needed,
372 * otherwise we know that the highest_used_slotid is still in use.
373 * When updating highest_used_slotid there may be "holes" in the bitmap
374 * so we need to scan down from highest_used_slotid to 0 looking for the now
375 * highest slotid in use.
376 * If none found, highest_used_slotid is set to -1.
378 * Must be called while holding tbl->slot_tbl_lock
381 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u8 free_slotid
)
383 int slotid
= free_slotid
;
385 BUG_ON(slotid
< 0 || 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
= -1;
397 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
398 free_slotid
, tbl
->highest_used_slotid
);
402 * Signal state manager thread if session fore channel is drained
404 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
406 struct rpc_task
*task
;
408 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
409 task
= rpc_wake_up_next(&ses
->fc_slot_table
.slot_tbl_waitq
);
411 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
415 if (ses
->fc_slot_table
.highest_used_slotid
!= -1)
418 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
419 complete(&ses
->fc_slot_table
.complete
);
423 * Signal state manager thread if session back channel is drained
425 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
427 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
428 ses
->bc_slot_table
.highest_used_slotid
!= -1)
430 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
431 complete(&ses
->bc_slot_table
.complete
);
434 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
436 struct nfs4_slot_table
*tbl
;
438 tbl
= &res
->sr_session
->fc_slot_table
;
440 /* just wake up the next guy waiting since
441 * we may have not consumed a slot after all */
442 dprintk("%s: No slot\n", __func__
);
446 spin_lock(&tbl
->slot_tbl_lock
);
447 nfs4_free_slot(tbl
, res
->sr_slot
- tbl
->slots
);
448 nfs4_check_drain_fc_complete(res
->sr_session
);
449 spin_unlock(&tbl
->slot_tbl_lock
);
453 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
455 unsigned long timestamp
;
456 struct nfs_client
*clp
;
459 * sr_status remains 1 if an RPC level error occurred. The server
460 * may or may not have processed the sequence operation..
461 * Proceed as if the server received and processed the sequence
464 if (res
->sr_status
== 1)
465 res
->sr_status
= NFS_OK
;
467 /* don't increment the sequence number if the task wasn't sent */
468 if (!RPC_WAS_SENT(task
))
471 /* Check the SEQUENCE operation status */
472 switch (res
->sr_status
) {
474 /* Update the slot's sequence and clientid lease timer */
475 ++res
->sr_slot
->seq_nr
;
476 timestamp
= res
->sr_renewal_time
;
477 clp
= res
->sr_session
->clp
;
478 do_renew_lease(clp
, timestamp
);
479 /* Check sequence flags */
480 if (res
->sr_status_flags
!= 0)
481 nfs4_schedule_lease_recovery(clp
);
484 /* The server detected a resend of the RPC call and
485 * returned NFS4ERR_DELAY as per Section 2.10.6.2
488 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
490 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
491 res
->sr_slot
->seq_nr
);
494 /* Just update the slot sequence no. */
495 ++res
->sr_slot
->seq_nr
;
498 /* The session may be reset by one of the error handlers. */
499 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
500 nfs41_sequence_free_slot(res
);
503 if (!rpc_restart_call(task
))
505 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
509 static int nfs4_sequence_done(struct rpc_task
*task
,
510 struct nfs4_sequence_res
*res
)
512 if (res
->sr_session
== NULL
)
514 return nfs41_sequence_done(task
, res
);
518 * nfs4_find_slot - efficiently look for a free slot
520 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
521 * If found, we mark the slot as used, update the highest_used_slotid,
522 * and respectively set up the sequence operation args.
523 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
525 * Note: must be called with under the slot_tbl_lock.
528 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
531 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
532 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
534 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
535 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
537 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
538 if (slotid
>= tbl
->max_slots
)
540 __set_bit(slotid
, tbl
->used_slots
);
541 if (slotid
> tbl
->highest_used_slotid
)
542 tbl
->highest_used_slotid
= slotid
;
545 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
546 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
550 int nfs41_setup_sequence(struct nfs4_session
*session
,
551 struct nfs4_sequence_args
*args
,
552 struct nfs4_sequence_res
*res
,
554 struct rpc_task
*task
)
556 struct nfs4_slot
*slot
;
557 struct nfs4_slot_table
*tbl
;
560 dprintk("--> %s\n", __func__
);
561 /* slot already allocated? */
562 if (res
->sr_slot
!= NULL
)
565 tbl
= &session
->fc_slot_table
;
567 spin_lock(&tbl
->slot_tbl_lock
);
568 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
569 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
570 /* The state manager will wait until the slot table is empty */
571 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
572 spin_unlock(&tbl
->slot_tbl_lock
);
573 dprintk("%s session is draining\n", __func__
);
577 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
578 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
579 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
580 spin_unlock(&tbl
->slot_tbl_lock
);
581 dprintk("%s enforce FIFO order\n", __func__
);
585 slotid
= nfs4_find_slot(tbl
);
586 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
587 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
588 spin_unlock(&tbl
->slot_tbl_lock
);
589 dprintk("<-- %s: no free slots\n", __func__
);
592 spin_unlock(&tbl
->slot_tbl_lock
);
594 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
595 slot
= tbl
->slots
+ slotid
;
596 args
->sa_session
= session
;
597 args
->sa_slotid
= slotid
;
598 args
->sa_cache_this
= cache_reply
;
600 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
602 res
->sr_session
= session
;
604 res
->sr_renewal_time
= jiffies
;
605 res
->sr_status_flags
= 0;
607 * sr_status is only set in decode_sequence, and so will remain
608 * set to 1 if an rpc level failure occurs.
613 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
615 int nfs4_setup_sequence(const struct nfs_server
*server
,
616 struct nfs4_sequence_args
*args
,
617 struct nfs4_sequence_res
*res
,
619 struct rpc_task
*task
)
621 struct nfs4_session
*session
= nfs4_get_session(server
);
624 if (session
== NULL
) {
625 args
->sa_session
= NULL
;
626 res
->sr_session
= NULL
;
630 dprintk("--> %s clp %p session %p sr_slot %td\n",
631 __func__
, session
->clp
, session
, res
->sr_slot
?
632 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
634 ret
= nfs41_setup_sequence(session
, args
, res
, cache_reply
,
637 dprintk("<-- %s status=%d\n", __func__
, ret
);
641 struct nfs41_call_sync_data
{
642 const struct nfs_server
*seq_server
;
643 struct nfs4_sequence_args
*seq_args
;
644 struct nfs4_sequence_res
*seq_res
;
648 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
650 struct nfs41_call_sync_data
*data
= calldata
;
652 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
654 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
655 data
->seq_res
, data
->cache_reply
, task
))
657 rpc_call_start(task
);
660 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
662 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
663 nfs41_call_sync_prepare(task
, calldata
);
666 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
668 struct nfs41_call_sync_data
*data
= calldata
;
670 nfs41_sequence_done(task
, data
->seq_res
);
673 struct rpc_call_ops nfs41_call_sync_ops
= {
674 .rpc_call_prepare
= nfs41_call_sync_prepare
,
675 .rpc_call_done
= nfs41_call_sync_done
,
678 struct rpc_call_ops nfs41_call_priv_sync_ops
= {
679 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
680 .rpc_call_done
= nfs41_call_sync_done
,
683 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
684 struct nfs_server
*server
,
685 struct rpc_message
*msg
,
686 struct nfs4_sequence_args
*args
,
687 struct nfs4_sequence_res
*res
,
692 struct rpc_task
*task
;
693 struct nfs41_call_sync_data data
= {
694 .seq_server
= server
,
697 .cache_reply
= cache_reply
,
699 struct rpc_task_setup task_setup
= {
702 .callback_ops
= &nfs41_call_sync_ops
,
703 .callback_data
= &data
708 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
709 task
= rpc_run_task(&task_setup
);
713 ret
= task
->tk_status
;
719 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
720 struct nfs_server
*server
,
721 struct rpc_message
*msg
,
722 struct nfs4_sequence_args
*args
,
723 struct nfs4_sequence_res
*res
,
726 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, cache_reply
, 0);
730 static int nfs4_sequence_done(struct rpc_task
*task
,
731 struct nfs4_sequence_res
*res
)
735 #endif /* CONFIG_NFS_V4_1 */
737 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
738 struct nfs_server
*server
,
739 struct rpc_message
*msg
,
740 struct nfs4_sequence_args
*args
,
741 struct nfs4_sequence_res
*res
,
744 args
->sa_session
= res
->sr_session
= NULL
;
745 return rpc_call_sync(clnt
, msg
, 0);
749 int nfs4_call_sync(struct rpc_clnt
*clnt
,
750 struct nfs_server
*server
,
751 struct rpc_message
*msg
,
752 struct nfs4_sequence_args
*args
,
753 struct nfs4_sequence_res
*res
,
756 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
757 args
, res
, cache_reply
);
760 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
762 struct nfs_inode
*nfsi
= NFS_I(dir
);
764 spin_lock(&dir
->i_lock
);
765 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
766 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
767 nfs_force_lookup_revalidate(dir
);
768 dir
->i_version
= cinfo
->after
;
769 spin_unlock(&dir
->i_lock
);
772 struct nfs4_opendata
{
774 struct nfs_openargs o_arg
;
775 struct nfs_openres o_res
;
776 struct nfs_open_confirmargs c_arg
;
777 struct nfs_open_confirmres c_res
;
778 struct nfs4_string owner_name
;
779 struct nfs4_string group_name
;
780 struct nfs_fattr f_attr
;
781 struct nfs_fattr dir_attr
;
783 struct dentry
*dentry
;
784 struct nfs4_state_owner
*owner
;
785 struct nfs4_state
*state
;
787 unsigned long timestamp
;
788 unsigned int rpc_done
: 1;
794 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
796 p
->o_res
.f_attr
= &p
->f_attr
;
797 p
->o_res
.dir_attr
= &p
->dir_attr
;
798 p
->o_res
.seqid
= p
->o_arg
.seqid
;
799 p
->c_res
.seqid
= p
->c_arg
.seqid
;
800 p
->o_res
.server
= p
->o_arg
.server
;
801 nfs_fattr_init(&p
->f_attr
);
802 nfs_fattr_init(&p
->dir_attr
);
803 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
806 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
807 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
808 const struct iattr
*attrs
,
811 struct dentry
*parent
= dget_parent(dentry
);
812 struct inode
*dir
= parent
->d_inode
;
813 struct nfs_server
*server
= NFS_SERVER(dir
);
814 struct nfs4_opendata
*p
;
816 p
= kzalloc(sizeof(*p
), gfp_mask
);
819 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
820 if (p
->o_arg
.seqid
== NULL
)
822 nfs_sb_active(dentry
->d_sb
);
823 p
->dentry
= dget(dentry
);
826 atomic_inc(&sp
->so_count
);
827 p
->o_arg
.fh
= NFS_FH(dir
);
828 p
->o_arg
.open_flags
= flags
;
829 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
830 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
831 p
->o_arg
.id
= sp
->so_owner_id
.id
;
832 p
->o_arg
.name
= &dentry
->d_name
;
833 p
->o_arg
.server
= server
;
834 p
->o_arg
.bitmask
= server
->attr_bitmask
;
835 p
->o_arg
.dir_bitmask
= server
->cache_consistency_bitmask
;
836 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
837 if (flags
& O_CREAT
) {
840 p
->o_arg
.u
.attrs
= &p
->attrs
;
841 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
842 s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
846 p
->c_arg
.fh
= &p
->o_res
.fh
;
847 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
848 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
849 nfs4_init_opendata_res(p
);
859 static void nfs4_opendata_free(struct kref
*kref
)
861 struct nfs4_opendata
*p
= container_of(kref
,
862 struct nfs4_opendata
, kref
);
863 struct super_block
*sb
= p
->dentry
->d_sb
;
865 nfs_free_seqid(p
->o_arg
.seqid
);
866 if (p
->state
!= NULL
)
867 nfs4_put_open_state(p
->state
);
868 nfs4_put_state_owner(p
->owner
);
872 nfs_fattr_free_names(&p
->f_attr
);
876 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
879 kref_put(&p
->kref
, nfs4_opendata_free
);
882 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
886 ret
= rpc_wait_for_completion_task(task
);
890 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
894 if (open_mode
& O_EXCL
)
896 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
898 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
899 && state
->n_rdonly
!= 0;
902 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
903 && state
->n_wronly
!= 0;
905 case FMODE_READ
|FMODE_WRITE
:
906 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
907 && state
->n_rdwr
!= 0;
913 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
915 if (delegation
== NULL
)
917 if ((delegation
->type
& fmode
) != fmode
)
919 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
921 nfs_mark_delegation_referenced(delegation
);
925 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
934 case FMODE_READ
|FMODE_WRITE
:
937 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
940 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
942 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
943 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
944 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
947 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
950 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
952 case FMODE_READ
|FMODE_WRITE
:
953 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
957 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
959 write_seqlock(&state
->seqlock
);
960 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
961 write_sequnlock(&state
->seqlock
);
964 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
967 * Protect the call to nfs4_state_set_mode_locked and
968 * serialise the stateid update
970 write_seqlock(&state
->seqlock
);
971 if (deleg_stateid
!= NULL
) {
972 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
973 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
975 if (open_stateid
!= NULL
)
976 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
977 write_sequnlock(&state
->seqlock
);
978 spin_lock(&state
->owner
->so_lock
);
979 update_open_stateflags(state
, fmode
);
980 spin_unlock(&state
->owner
->so_lock
);
983 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
985 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
986 struct nfs_delegation
*deleg_cur
;
989 fmode
&= (FMODE_READ
|FMODE_WRITE
);
992 deleg_cur
= rcu_dereference(nfsi
->delegation
);
993 if (deleg_cur
== NULL
)
996 spin_lock(&deleg_cur
->lock
);
997 if (nfsi
->delegation
!= deleg_cur
||
998 (deleg_cur
->type
& fmode
) != fmode
)
999 goto no_delegation_unlock
;
1001 if (delegation
== NULL
)
1002 delegation
= &deleg_cur
->stateid
;
1003 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
1004 goto no_delegation_unlock
;
1006 nfs_mark_delegation_referenced(deleg_cur
);
1007 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1009 no_delegation_unlock
:
1010 spin_unlock(&deleg_cur
->lock
);
1014 if (!ret
&& open_stateid
!= NULL
) {
1015 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1023 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1025 struct nfs_delegation
*delegation
;
1028 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1029 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1034 nfs_inode_return_delegation(inode
);
1037 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1039 struct nfs4_state
*state
= opendata
->state
;
1040 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1041 struct nfs_delegation
*delegation
;
1042 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
1043 fmode_t fmode
= opendata
->o_arg
.fmode
;
1044 nfs4_stateid stateid
;
1048 if (can_open_cached(state
, fmode
, open_mode
)) {
1049 spin_lock(&state
->owner
->so_lock
);
1050 if (can_open_cached(state
, fmode
, open_mode
)) {
1051 update_open_stateflags(state
, fmode
);
1052 spin_unlock(&state
->owner
->so_lock
);
1053 goto out_return_state
;
1055 spin_unlock(&state
->owner
->so_lock
);
1058 delegation
= rcu_dereference(nfsi
->delegation
);
1059 if (!can_open_delegated(delegation
, fmode
)) {
1063 /* Save the delegation */
1064 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
1066 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1071 /* Try to update the stateid using the delegation */
1072 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1073 goto out_return_state
;
1076 return ERR_PTR(ret
);
1078 atomic_inc(&state
->count
);
1082 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1084 struct inode
*inode
;
1085 struct nfs4_state
*state
= NULL
;
1086 struct nfs_delegation
*delegation
;
1089 if (!data
->rpc_done
) {
1090 state
= nfs4_try_open_cached(data
);
1095 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1097 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1098 ret
= PTR_ERR(inode
);
1102 state
= nfs4_get_open_state(inode
, data
->owner
);
1105 if (data
->o_res
.delegation_type
!= 0) {
1106 int delegation_flags
= 0;
1109 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1111 delegation_flags
= delegation
->flags
;
1113 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1114 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1115 "returning a delegation for "
1116 "OPEN(CLAIM_DELEGATE_CUR)\n",
1117 NFS_CLIENT(inode
)->cl_server
);
1118 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1119 nfs_inode_set_delegation(state
->inode
,
1120 data
->owner
->so_cred
,
1123 nfs_inode_reclaim_delegation(state
->inode
,
1124 data
->owner
->so_cred
,
1128 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1136 return ERR_PTR(ret
);
1139 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1141 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1142 struct nfs_open_context
*ctx
;
1144 spin_lock(&state
->inode
->i_lock
);
1145 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1146 if (ctx
->state
!= state
)
1148 get_nfs_open_context(ctx
);
1149 spin_unlock(&state
->inode
->i_lock
);
1152 spin_unlock(&state
->inode
->i_lock
);
1153 return ERR_PTR(-ENOENT
);
1156 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1158 struct nfs4_opendata
*opendata
;
1160 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1161 if (opendata
== NULL
)
1162 return ERR_PTR(-ENOMEM
);
1163 opendata
->state
= state
;
1164 atomic_inc(&state
->count
);
1168 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1170 struct nfs4_state
*newstate
;
1173 opendata
->o_arg
.open_flags
= 0;
1174 opendata
->o_arg
.fmode
= fmode
;
1175 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1176 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1177 nfs4_init_opendata_res(opendata
);
1178 ret
= _nfs4_recover_proc_open(opendata
);
1181 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1182 if (IS_ERR(newstate
))
1183 return PTR_ERR(newstate
);
1184 nfs4_close_state(newstate
, fmode
);
1189 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1191 struct nfs4_state
*newstate
;
1194 /* memory barrier prior to reading state->n_* */
1195 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1197 if (state
->n_rdwr
!= 0) {
1198 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1199 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1202 if (newstate
!= state
)
1205 if (state
->n_wronly
!= 0) {
1206 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1207 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1210 if (newstate
!= state
)
1213 if (state
->n_rdonly
!= 0) {
1214 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1215 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1218 if (newstate
!= state
)
1222 * We may have performed cached opens for all three recoveries.
1223 * Check if we need to update the current stateid.
1225 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1226 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1227 write_seqlock(&state
->seqlock
);
1228 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1229 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1230 write_sequnlock(&state
->seqlock
);
1237 * reclaim state on the server after a reboot.
1239 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1241 struct nfs_delegation
*delegation
;
1242 struct nfs4_opendata
*opendata
;
1243 fmode_t delegation_type
= 0;
1246 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1247 if (IS_ERR(opendata
))
1248 return PTR_ERR(opendata
);
1249 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1250 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1252 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1253 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1254 delegation_type
= delegation
->type
;
1256 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1257 status
= nfs4_open_recover(opendata
, state
);
1258 nfs4_opendata_put(opendata
);
1262 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1264 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1265 struct nfs4_exception exception
= { };
1268 err
= _nfs4_do_open_reclaim(ctx
, state
);
1269 if (err
!= -NFS4ERR_DELAY
)
1271 nfs4_handle_exception(server
, err
, &exception
);
1272 } while (exception
.retry
);
1276 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1278 struct nfs_open_context
*ctx
;
1281 ctx
= nfs4_state_find_open_context(state
);
1283 return PTR_ERR(ctx
);
1284 ret
= nfs4_do_open_reclaim(ctx
, state
);
1285 put_nfs_open_context(ctx
);
1289 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1291 struct nfs4_opendata
*opendata
;
1294 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1295 if (IS_ERR(opendata
))
1296 return PTR_ERR(opendata
);
1297 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1298 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1299 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1300 ret
= nfs4_open_recover(opendata
, state
);
1301 nfs4_opendata_put(opendata
);
1305 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1307 struct nfs4_exception exception
= { };
1308 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1311 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1317 case -NFS4ERR_BADSESSION
:
1318 case -NFS4ERR_BADSLOT
:
1319 case -NFS4ERR_BAD_HIGH_SLOT
:
1320 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1321 case -NFS4ERR_DEADSESSION
:
1322 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
1324 case -NFS4ERR_STALE_CLIENTID
:
1325 case -NFS4ERR_STALE_STATEID
:
1326 case -NFS4ERR_EXPIRED
:
1327 /* Don't recall a delegation if it was lost */
1328 nfs4_schedule_lease_recovery(server
->nfs_client
);
1332 * The show must go on: exit, but mark the
1333 * stateid as needing recovery.
1335 case -NFS4ERR_DELEG_REVOKED
:
1336 case -NFS4ERR_ADMIN_REVOKED
:
1337 case -NFS4ERR_BAD_STATEID
:
1338 nfs_inode_find_state_and_recover(state
->inode
,
1340 nfs4_schedule_stateid_recovery(server
, state
);
1343 * User RPCSEC_GSS context has expired.
1344 * We cannot recover this stateid now, so
1345 * skip it and allow recovery thread to
1352 err
= nfs4_handle_exception(server
, err
, &exception
);
1353 } while (exception
.retry
);
1358 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1360 struct nfs4_opendata
*data
= calldata
;
1362 data
->rpc_status
= task
->tk_status
;
1363 if (data
->rpc_status
== 0) {
1364 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1365 sizeof(data
->o_res
.stateid
.data
));
1366 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1367 renew_lease(data
->o_res
.server
, data
->timestamp
);
1372 static void nfs4_open_confirm_release(void *calldata
)
1374 struct nfs4_opendata
*data
= calldata
;
1375 struct nfs4_state
*state
= NULL
;
1377 /* If this request hasn't been cancelled, do nothing */
1378 if (data
->cancelled
== 0)
1380 /* In case of error, no cleanup! */
1381 if (!data
->rpc_done
)
1383 state
= nfs4_opendata_to_nfs4_state(data
);
1385 nfs4_close_state(state
, data
->o_arg
.fmode
);
1387 nfs4_opendata_put(data
);
1390 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1391 .rpc_call_done
= nfs4_open_confirm_done
,
1392 .rpc_release
= nfs4_open_confirm_release
,
1396 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1398 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1400 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1401 struct rpc_task
*task
;
1402 struct rpc_message msg
= {
1403 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1404 .rpc_argp
= &data
->c_arg
,
1405 .rpc_resp
= &data
->c_res
,
1406 .rpc_cred
= data
->owner
->so_cred
,
1408 struct rpc_task_setup task_setup_data
= {
1409 .rpc_client
= server
->client
,
1410 .rpc_message
= &msg
,
1411 .callback_ops
= &nfs4_open_confirm_ops
,
1412 .callback_data
= data
,
1413 .workqueue
= nfsiod_workqueue
,
1414 .flags
= RPC_TASK_ASYNC
,
1418 kref_get(&data
->kref
);
1420 data
->rpc_status
= 0;
1421 data
->timestamp
= jiffies
;
1422 task
= rpc_run_task(&task_setup_data
);
1424 return PTR_ERR(task
);
1425 status
= nfs4_wait_for_completion_rpc_task(task
);
1427 data
->cancelled
= 1;
1430 status
= data
->rpc_status
;
1435 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1437 struct nfs4_opendata
*data
= calldata
;
1438 struct nfs4_state_owner
*sp
= data
->owner
;
1440 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1443 * Check if we still need to send an OPEN call, or if we can use
1444 * a delegation instead.
1446 if (data
->state
!= NULL
) {
1447 struct nfs_delegation
*delegation
;
1449 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1452 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1453 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1454 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1455 goto unlock_no_action
;
1458 /* Update sequence id. */
1459 data
->o_arg
.id
= sp
->so_owner_id
.id
;
1460 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1461 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1462 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1463 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1465 data
->timestamp
= jiffies
;
1466 if (nfs4_setup_sequence(data
->o_arg
.server
,
1467 &data
->o_arg
.seq_args
,
1468 &data
->o_res
.seq_res
, 1, task
))
1470 rpc_call_start(task
);
1475 task
->tk_action
= NULL
;
1479 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1481 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1482 nfs4_open_prepare(task
, calldata
);
1485 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1487 struct nfs4_opendata
*data
= calldata
;
1489 data
->rpc_status
= task
->tk_status
;
1491 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1494 if (task
->tk_status
== 0) {
1495 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1499 data
->rpc_status
= -ELOOP
;
1502 data
->rpc_status
= -EISDIR
;
1505 data
->rpc_status
= -ENOTDIR
;
1507 renew_lease(data
->o_res
.server
, data
->timestamp
);
1508 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1509 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1514 static void nfs4_open_release(void *calldata
)
1516 struct nfs4_opendata
*data
= calldata
;
1517 struct nfs4_state
*state
= NULL
;
1519 /* If this request hasn't been cancelled, do nothing */
1520 if (data
->cancelled
== 0)
1522 /* In case of error, no cleanup! */
1523 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1525 /* In case we need an open_confirm, no cleanup! */
1526 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1528 state
= nfs4_opendata_to_nfs4_state(data
);
1530 nfs4_close_state(state
, data
->o_arg
.fmode
);
1532 nfs4_opendata_put(data
);
1535 static const struct rpc_call_ops nfs4_open_ops
= {
1536 .rpc_call_prepare
= nfs4_open_prepare
,
1537 .rpc_call_done
= nfs4_open_done
,
1538 .rpc_release
= nfs4_open_release
,
1541 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1542 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1543 .rpc_call_done
= nfs4_open_done
,
1544 .rpc_release
= nfs4_open_release
,
1547 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1549 struct inode
*dir
= data
->dir
->d_inode
;
1550 struct nfs_server
*server
= NFS_SERVER(dir
);
1551 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1552 struct nfs_openres
*o_res
= &data
->o_res
;
1553 struct rpc_task
*task
;
1554 struct rpc_message msg
= {
1555 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1558 .rpc_cred
= data
->owner
->so_cred
,
1560 struct rpc_task_setup task_setup_data
= {
1561 .rpc_client
= server
->client
,
1562 .rpc_message
= &msg
,
1563 .callback_ops
= &nfs4_open_ops
,
1564 .callback_data
= data
,
1565 .workqueue
= nfsiod_workqueue
,
1566 .flags
= RPC_TASK_ASYNC
,
1570 kref_get(&data
->kref
);
1572 data
->rpc_status
= 0;
1573 data
->cancelled
= 0;
1575 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1576 task
= rpc_run_task(&task_setup_data
);
1578 return PTR_ERR(task
);
1579 status
= nfs4_wait_for_completion_rpc_task(task
);
1581 data
->cancelled
= 1;
1584 status
= data
->rpc_status
;
1590 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1592 struct inode
*dir
= data
->dir
->d_inode
;
1593 struct nfs_openres
*o_res
= &data
->o_res
;
1596 status
= nfs4_run_open_task(data
, 1);
1597 if (status
!= 0 || !data
->rpc_done
)
1600 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1602 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1604 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1605 status
= _nfs4_proc_open_confirm(data
);
1614 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1616 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1618 struct inode
*dir
= data
->dir
->d_inode
;
1619 struct nfs_server
*server
= NFS_SERVER(dir
);
1620 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1621 struct nfs_openres
*o_res
= &data
->o_res
;
1624 status
= nfs4_run_open_task(data
, 0);
1625 if (!data
->rpc_done
)
1628 if (status
== -NFS4ERR_BADNAME
&&
1629 !(o_arg
->open_flags
& O_CREAT
))
1634 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1636 if (o_arg
->open_flags
& O_CREAT
) {
1637 update_changeattr(dir
, &o_res
->cinfo
);
1638 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1640 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1641 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1642 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1643 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1644 status
= _nfs4_proc_open_confirm(data
);
1648 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1649 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1653 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1658 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1659 ret
= nfs4_wait_clnt_recover(clp
);
1662 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1663 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1665 nfs4_schedule_state_manager(clp
);
1671 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1673 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1678 * reclaim state on the server after a network partition.
1679 * Assumes caller holds the appropriate lock
1681 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1683 struct nfs4_opendata
*opendata
;
1686 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1687 if (IS_ERR(opendata
))
1688 return PTR_ERR(opendata
);
1689 ret
= nfs4_open_recover(opendata
, state
);
1691 d_drop(ctx
->dentry
);
1692 nfs4_opendata_put(opendata
);
1696 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1698 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1699 struct nfs4_exception exception
= { };
1703 err
= _nfs4_open_expired(ctx
, state
);
1707 case -NFS4ERR_GRACE
:
1708 case -NFS4ERR_DELAY
:
1709 nfs4_handle_exception(server
, err
, &exception
);
1712 } while (exception
.retry
);
1717 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1719 struct nfs_open_context
*ctx
;
1722 ctx
= nfs4_state_find_open_context(state
);
1724 return PTR_ERR(ctx
);
1725 ret
= nfs4_do_open_expired(ctx
, state
);
1726 put_nfs_open_context(ctx
);
1730 #if defined(CONFIG_NFS_V4_1)
1731 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1734 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1736 status
= nfs41_test_stateid(server
, state
);
1737 if (status
== NFS_OK
)
1739 nfs41_free_stateid(server
, state
);
1740 return nfs4_open_expired(sp
, state
);
1745 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1746 * fields corresponding to attributes that were used to store the verifier.
1747 * Make sure we clobber those fields in the later setattr call
1749 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1751 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1752 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1753 sattr
->ia_valid
|= ATTR_ATIME
;
1755 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1756 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1757 sattr
->ia_valid
|= ATTR_MTIME
;
1761 * Returns a referenced nfs4_state
1763 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
)
1765 struct nfs4_state_owner
*sp
;
1766 struct nfs4_state
*state
= NULL
;
1767 struct nfs_server
*server
= NFS_SERVER(dir
);
1768 struct nfs4_opendata
*opendata
;
1771 /* Protect against reboot recovery conflicts */
1773 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1774 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1777 status
= nfs4_recover_expired_lease(server
);
1779 goto err_put_state_owner
;
1780 if (dentry
->d_inode
!= NULL
)
1781 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1783 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1784 if (opendata
== NULL
)
1785 goto err_put_state_owner
;
1787 if (dentry
->d_inode
!= NULL
)
1788 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1790 status
= _nfs4_proc_open(opendata
);
1792 goto err_opendata_put
;
1794 state
= nfs4_opendata_to_nfs4_state(opendata
);
1795 status
= PTR_ERR(state
);
1797 goto err_opendata_put
;
1798 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1799 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1801 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1802 nfs4_exclusive_attrset(opendata
, sattr
);
1804 nfs_fattr_init(opendata
->o_res
.f_attr
);
1805 status
= nfs4_do_setattr(state
->inode
, cred
,
1806 opendata
->o_res
.f_attr
, sattr
,
1809 nfs_setattr_update_inode(state
->inode
, sattr
);
1810 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1812 nfs4_opendata_put(opendata
);
1813 nfs4_put_state_owner(sp
);
1817 nfs4_opendata_put(opendata
);
1818 err_put_state_owner
:
1819 nfs4_put_state_owner(sp
);
1826 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
)
1828 struct nfs4_exception exception
= { };
1829 struct nfs4_state
*res
;
1833 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
, &res
);
1836 /* NOTE: BAD_SEQID means the server and client disagree about the
1837 * book-keeping w.r.t. state-changing operations
1838 * (OPEN/CLOSE/LOCK/LOCKU...)
1839 * It is actually a sign of a bug on the client or on the server.
1841 * If we receive a BAD_SEQID error in the particular case of
1842 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1843 * have unhashed the old state_owner for us, and that we can
1844 * therefore safely retry using a new one. We should still warn
1845 * the user though...
1847 if (status
== -NFS4ERR_BAD_SEQID
) {
1848 pr_warn_ratelimited("NFS: v4 server %s "
1849 " returned a bad sequence-id error!\n",
1850 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1851 exception
.retry
= 1;
1855 * BAD_STATEID on OPEN means that the server cancelled our
1856 * state before it received the OPEN_CONFIRM.
1857 * Recover by retrying the request as per the discussion
1858 * on Page 181 of RFC3530.
1860 if (status
== -NFS4ERR_BAD_STATEID
) {
1861 exception
.retry
= 1;
1864 if (status
== -EAGAIN
) {
1865 /* We must have found a delegation */
1866 exception
.retry
= 1;
1869 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1870 status
, &exception
));
1871 } while (exception
.retry
);
1875 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1876 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1877 struct nfs4_state
*state
)
1879 struct nfs_server
*server
= NFS_SERVER(inode
);
1880 struct nfs_setattrargs arg
= {
1881 .fh
= NFS_FH(inode
),
1884 .bitmask
= server
->attr_bitmask
,
1886 struct nfs_setattrres res
= {
1890 struct rpc_message msg
= {
1891 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1896 unsigned long timestamp
= jiffies
;
1899 nfs_fattr_init(fattr
);
1901 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1902 /* Use that stateid */
1903 } else if (state
!= NULL
) {
1904 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
, current
->tgid
);
1906 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1908 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
1909 if (status
== 0 && state
!= NULL
)
1910 renew_lease(server
, timestamp
);
1914 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1915 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1916 struct nfs4_state
*state
)
1918 struct nfs_server
*server
= NFS_SERVER(inode
);
1919 struct nfs4_exception exception
= {
1925 err
= nfs4_handle_exception(server
,
1926 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1928 } while (exception
.retry
);
1932 struct nfs4_closedata
{
1933 struct inode
*inode
;
1934 struct nfs4_state
*state
;
1935 struct nfs_closeargs arg
;
1936 struct nfs_closeres res
;
1937 struct nfs_fattr fattr
;
1938 unsigned long timestamp
;
1943 static void nfs4_free_closedata(void *data
)
1945 struct nfs4_closedata
*calldata
= data
;
1946 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1947 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
1950 pnfs_roc_release(calldata
->state
->inode
);
1951 nfs4_put_open_state(calldata
->state
);
1952 nfs_free_seqid(calldata
->arg
.seqid
);
1953 nfs4_put_state_owner(sp
);
1954 nfs_sb_deactive(sb
);
1958 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
1961 spin_lock(&state
->owner
->so_lock
);
1962 if (!(fmode
& FMODE_READ
))
1963 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1964 if (!(fmode
& FMODE_WRITE
))
1965 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1966 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1967 spin_unlock(&state
->owner
->so_lock
);
1970 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1972 struct nfs4_closedata
*calldata
= data
;
1973 struct nfs4_state
*state
= calldata
->state
;
1974 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1976 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
1978 /* hmm. we are done with the inode, and in the process of freeing
1979 * the state_owner. we keep this around to process errors
1981 switch (task
->tk_status
) {
1984 pnfs_roc_set_barrier(state
->inode
,
1985 calldata
->roc_barrier
);
1986 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1987 renew_lease(server
, calldata
->timestamp
);
1988 nfs4_close_clear_stateid_flags(state
,
1989 calldata
->arg
.fmode
);
1991 case -NFS4ERR_STALE_STATEID
:
1992 case -NFS4ERR_OLD_STATEID
:
1993 case -NFS4ERR_BAD_STATEID
:
1994 case -NFS4ERR_EXPIRED
:
1995 if (calldata
->arg
.fmode
== 0)
1998 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
1999 rpc_restart_call_prepare(task
);
2001 nfs_release_seqid(calldata
->arg
.seqid
);
2002 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2005 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2007 struct nfs4_closedata
*calldata
= data
;
2008 struct nfs4_state
*state
= calldata
->state
;
2011 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2014 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2015 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2016 spin_lock(&state
->owner
->so_lock
);
2017 /* Calculate the change in open mode */
2018 if (state
->n_rdwr
== 0) {
2019 if (state
->n_rdonly
== 0) {
2020 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2021 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2022 calldata
->arg
.fmode
&= ~FMODE_READ
;
2024 if (state
->n_wronly
== 0) {
2025 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2026 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2027 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2030 spin_unlock(&state
->owner
->so_lock
);
2033 /* Note: exit _without_ calling nfs4_close_done */
2034 task
->tk_action
= NULL
;
2038 if (calldata
->arg
.fmode
== 0) {
2039 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2040 if (calldata
->roc
&&
2041 pnfs_roc_drain(calldata
->inode
, &calldata
->roc_barrier
)) {
2042 rpc_sleep_on(&NFS_SERVER(calldata
->inode
)->roc_rpcwaitq
,
2048 nfs_fattr_init(calldata
->res
.fattr
);
2049 calldata
->timestamp
= jiffies
;
2050 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
2051 &calldata
->arg
.seq_args
, &calldata
->res
.seq_res
,
2054 rpc_call_start(task
);
2057 static const struct rpc_call_ops nfs4_close_ops
= {
2058 .rpc_call_prepare
= nfs4_close_prepare
,
2059 .rpc_call_done
= nfs4_close_done
,
2060 .rpc_release
= nfs4_free_closedata
,
2064 * It is possible for data to be read/written from a mem-mapped file
2065 * after the sys_close call (which hits the vfs layer as a flush).
2066 * This means that we can't safely call nfsv4 close on a file until
2067 * the inode is cleared. This in turn means that we are not good
2068 * NFSv4 citizens - we do not indicate to the server to update the file's
2069 * share state even when we are done with one of the three share
2070 * stateid's in the inode.
2072 * NOTE: Caller must be holding the sp->so_owner semaphore!
2074 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
, bool roc
)
2076 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2077 struct nfs4_closedata
*calldata
;
2078 struct nfs4_state_owner
*sp
= state
->owner
;
2079 struct rpc_task
*task
;
2080 struct rpc_message msg
= {
2081 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2082 .rpc_cred
= state
->owner
->so_cred
,
2084 struct rpc_task_setup task_setup_data
= {
2085 .rpc_client
= server
->client
,
2086 .rpc_message
= &msg
,
2087 .callback_ops
= &nfs4_close_ops
,
2088 .workqueue
= nfsiod_workqueue
,
2089 .flags
= RPC_TASK_ASYNC
,
2091 int status
= -ENOMEM
;
2093 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2094 if (calldata
== NULL
)
2096 calldata
->inode
= state
->inode
;
2097 calldata
->state
= state
;
2098 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2099 calldata
->arg
.stateid
= &state
->open_stateid
;
2100 /* Serialization for the sequence id */
2101 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2102 if (calldata
->arg
.seqid
== NULL
)
2103 goto out_free_calldata
;
2104 calldata
->arg
.fmode
= 0;
2105 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2106 calldata
->res
.fattr
= &calldata
->fattr
;
2107 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2108 calldata
->res
.server
= server
;
2109 calldata
->roc
= roc
;
2110 nfs_sb_active(calldata
->inode
->i_sb
);
2112 msg
.rpc_argp
= &calldata
->arg
;
2113 msg
.rpc_resp
= &calldata
->res
;
2114 task_setup_data
.callback_data
= calldata
;
2115 task
= rpc_run_task(&task_setup_data
);
2117 return PTR_ERR(task
);
2120 status
= rpc_wait_for_completion_task(task
);
2127 pnfs_roc_release(state
->inode
);
2128 nfs4_put_open_state(state
);
2129 nfs4_put_state_owner(sp
);
2133 static struct inode
*
2134 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2136 struct nfs4_state
*state
;
2138 /* Protect against concurrent sillydeletes */
2139 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
, ctx
->cred
);
2141 return ERR_CAST(state
);
2143 return igrab(state
->inode
);
2146 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2148 if (ctx
->state
== NULL
)
2151 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2153 nfs4_close_state(ctx
->state
, ctx
->mode
);
2156 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2158 struct nfs4_server_caps_arg args
= {
2161 struct nfs4_server_caps_res res
= {};
2162 struct rpc_message msg
= {
2163 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2169 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2171 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2172 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2173 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2174 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2175 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2176 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2177 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2178 server
->caps
|= NFS_CAP_ACLS
;
2179 if (res
.has_links
!= 0)
2180 server
->caps
|= NFS_CAP_HARDLINKS
;
2181 if (res
.has_symlinks
!= 0)
2182 server
->caps
|= NFS_CAP_SYMLINKS
;
2183 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2184 server
->caps
|= NFS_CAP_FILEID
;
2185 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2186 server
->caps
|= NFS_CAP_MODE
;
2187 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2188 server
->caps
|= NFS_CAP_NLINK
;
2189 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2190 server
->caps
|= NFS_CAP_OWNER
;
2191 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2192 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2193 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2194 server
->caps
|= NFS_CAP_ATIME
;
2195 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2196 server
->caps
|= NFS_CAP_CTIME
;
2197 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2198 server
->caps
|= NFS_CAP_MTIME
;
2200 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2201 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2202 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2203 server
->acl_bitmask
= res
.acl_bitmask
;
2209 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2211 struct nfs4_exception exception
= { };
2214 err
= nfs4_handle_exception(server
,
2215 _nfs4_server_capabilities(server
, fhandle
),
2217 } while (exception
.retry
);
2221 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2222 struct nfs_fsinfo
*info
)
2224 struct nfs4_lookup_root_arg args
= {
2225 .bitmask
= nfs4_fattr_bitmap
,
2227 struct nfs4_lookup_res res
= {
2229 .fattr
= info
->fattr
,
2232 struct rpc_message msg
= {
2233 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2238 nfs_fattr_init(info
->fattr
);
2239 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2242 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2243 struct nfs_fsinfo
*info
)
2245 struct nfs4_exception exception
= { };
2248 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2251 case -NFS4ERR_WRONGSEC
:
2254 err
= nfs4_handle_exception(server
, err
, &exception
);
2256 } while (exception
.retry
);
2261 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2262 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2264 struct rpc_auth
*auth
;
2267 auth
= rpcauth_create(flavor
, server
->client
);
2272 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2277 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2278 struct nfs_fsinfo
*info
)
2280 int i
, len
, status
= 0;
2281 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2283 len
= gss_mech_list_pseudoflavors(&flav_array
[0]);
2284 flav_array
[len
] = RPC_AUTH_NULL
;
2287 for (i
= 0; i
< len
; i
++) {
2288 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2289 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2294 * -EACCESS could mean that the user doesn't have correct permissions
2295 * to access the mount. It could also mean that we tried to mount
2296 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2297 * existing mount programs don't handle -EACCES very well so it should
2298 * be mapped to -EPERM instead.
2300 if (status
== -EACCES
)
2306 * get the file handle for the "/" directory on the server
2308 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2309 struct nfs_fsinfo
*info
)
2311 int minor_version
= server
->nfs_client
->cl_minorversion
;
2312 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2313 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2315 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2316 * by nfs4_map_errors() as this function exits.
2318 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2320 status
= nfs4_server_capabilities(server
, fhandle
);
2322 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2323 return nfs4_map_errors(status
);
2326 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
2328 * Get locations and (maybe) other attributes of a referral.
2329 * Note that we'll actually follow the referral later when
2330 * we detect fsid mismatch in inode revalidation
2332 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
,
2333 struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2335 int status
= -ENOMEM
;
2336 struct page
*page
= NULL
;
2337 struct nfs4_fs_locations
*locations
= NULL
;
2339 page
= alloc_page(GFP_KERNEL
);
2342 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2343 if (locations
== NULL
)
2346 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2349 /* Make sure server returned a different fsid for the referral */
2350 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2351 dprintk("%s: server did not return a different fsid for"
2352 " a referral at %s\n", __func__
, name
->name
);
2356 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2357 nfs_fixup_referral_attributes(&locations
->fattr
);
2359 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2360 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2361 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2369 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2371 struct nfs4_getattr_arg args
= {
2373 .bitmask
= server
->attr_bitmask
,
2375 struct nfs4_getattr_res res
= {
2379 struct rpc_message msg
= {
2380 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2385 nfs_fattr_init(fattr
);
2386 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2389 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2391 struct nfs4_exception exception
= { };
2394 err
= nfs4_handle_exception(server
,
2395 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2397 } while (exception
.retry
);
2402 * The file is not closed if it is opened due to the a request to change
2403 * the size of the file. The open call will not be needed once the
2404 * VFS layer lookup-intents are implemented.
2406 * Close is called when the inode is destroyed.
2407 * If we haven't opened the file for O_WRONLY, we
2408 * need to in the size_change case to obtain a stateid.
2411 * Because OPEN is always done by name in nfsv4, it is
2412 * possible that we opened a different file by the same
2413 * name. We can recognize this race condition, but we
2414 * can't do anything about it besides returning an error.
2416 * This will be fixed with VFS changes (lookup-intent).
2419 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2420 struct iattr
*sattr
)
2422 struct inode
*inode
= dentry
->d_inode
;
2423 struct rpc_cred
*cred
= NULL
;
2424 struct nfs4_state
*state
= NULL
;
2427 if (pnfs_ld_layoutret_on_setattr(inode
))
2428 pnfs_return_layout(inode
);
2430 nfs_fattr_init(fattr
);
2432 /* Search for an existing open(O_WRITE) file */
2433 if (sattr
->ia_valid
& ATTR_FILE
) {
2434 struct nfs_open_context
*ctx
;
2436 ctx
= nfs_file_open_context(sattr
->ia_file
);
2443 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2445 nfs_setattr_update_inode(inode
, sattr
);
2449 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2450 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2451 struct nfs_fattr
*fattr
)
2453 struct nfs_server
*server
= NFS_SERVER(dir
);
2455 struct nfs4_lookup_arg args
= {
2456 .bitmask
= server
->attr_bitmask
,
2457 .dir_fh
= NFS_FH(dir
),
2460 struct nfs4_lookup_res res
= {
2465 struct rpc_message msg
= {
2466 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2471 nfs_fattr_init(fattr
);
2473 dprintk("NFS call lookup %s\n", name
->name
);
2474 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2475 dprintk("NFS reply lookup: %d\n", status
);
2479 void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
, struct nfs_fh
*fh
)
2481 memset(fh
, 0, sizeof(struct nfs_fh
));
2482 fattr
->fsid
.major
= 1;
2483 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2484 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_FSID
| NFS_ATTR_FATTR_MOUNTPOINT
;
2485 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2489 static int nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
, struct qstr
*name
,
2490 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2492 struct nfs4_exception exception
= { };
2497 status
= _nfs4_proc_lookup(clnt
, dir
, name
, fhandle
, fattr
);
2499 case -NFS4ERR_BADNAME
:
2501 case -NFS4ERR_MOVED
:
2502 return nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2503 case -NFS4ERR_WRONGSEC
:
2504 nfs_fixup_secinfo_attributes(fattr
, fhandle
);
2506 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2507 status
, &exception
);
2508 } while (exception
.retry
);
2512 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2514 struct nfs_server
*server
= NFS_SERVER(inode
);
2515 struct nfs4_accessargs args
= {
2516 .fh
= NFS_FH(inode
),
2517 .bitmask
= server
->attr_bitmask
,
2519 struct nfs4_accessres res
= {
2522 struct rpc_message msg
= {
2523 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2526 .rpc_cred
= entry
->cred
,
2528 int mode
= entry
->mask
;
2532 * Determine which access bits we want to ask for...
2534 if (mode
& MAY_READ
)
2535 args
.access
|= NFS4_ACCESS_READ
;
2536 if (S_ISDIR(inode
->i_mode
)) {
2537 if (mode
& MAY_WRITE
)
2538 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2539 if (mode
& MAY_EXEC
)
2540 args
.access
|= NFS4_ACCESS_LOOKUP
;
2542 if (mode
& MAY_WRITE
)
2543 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2544 if (mode
& MAY_EXEC
)
2545 args
.access
|= NFS4_ACCESS_EXECUTE
;
2548 res
.fattr
= nfs_alloc_fattr();
2549 if (res
.fattr
== NULL
)
2552 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2555 if (res
.access
& NFS4_ACCESS_READ
)
2556 entry
->mask
|= MAY_READ
;
2557 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2558 entry
->mask
|= MAY_WRITE
;
2559 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2560 entry
->mask
|= MAY_EXEC
;
2561 nfs_refresh_inode(inode
, res
.fattr
);
2563 nfs_free_fattr(res
.fattr
);
2567 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2569 struct nfs4_exception exception
= { };
2572 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2573 _nfs4_proc_access(inode
, entry
),
2575 } while (exception
.retry
);
2580 * TODO: For the time being, we don't try to get any attributes
2581 * along with any of the zero-copy operations READ, READDIR,
2584 * In the case of the first three, we want to put the GETATTR
2585 * after the read-type operation -- this is because it is hard
2586 * to predict the length of a GETATTR response in v4, and thus
2587 * align the READ data correctly. This means that the GETATTR
2588 * may end up partially falling into the page cache, and we should
2589 * shift it into the 'tail' of the xdr_buf before processing.
2590 * To do this efficiently, we need to know the total length
2591 * of data received, which doesn't seem to be available outside
2594 * In the case of WRITE, we also want to put the GETATTR after
2595 * the operation -- in this case because we want to make sure
2596 * we get the post-operation mtime and size. This means that
2597 * we can't use xdr_encode_pages() as written: we need a variant
2598 * of it which would leave room in the 'tail' iovec.
2600 * Both of these changes to the XDR layer would in fact be quite
2601 * minor, but I decided to leave them for a subsequent patch.
2603 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2604 unsigned int pgbase
, unsigned int pglen
)
2606 struct nfs4_readlink args
= {
2607 .fh
= NFS_FH(inode
),
2612 struct nfs4_readlink_res res
;
2613 struct rpc_message msg
= {
2614 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2619 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2622 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2623 unsigned int pgbase
, unsigned int pglen
)
2625 struct nfs4_exception exception
= { };
2628 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2629 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2631 } while (exception
.retry
);
2637 * We will need to arrange for the VFS layer to provide an atomic open.
2638 * Until then, this create/open method is prone to inefficiency and race
2639 * conditions due to the lookup, create, and open VFS calls from sys_open()
2640 * placed on the wire.
2642 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2643 * The file will be opened again in the subsequent VFS open call
2644 * (nfs4_proc_file_open).
2646 * The open for read will just hang around to be used by any process that
2647 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2651 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2652 int flags
, struct nfs_open_context
*ctx
)
2654 struct dentry
*de
= dentry
;
2655 struct nfs4_state
*state
;
2656 struct rpc_cred
*cred
= NULL
;
2665 sattr
->ia_mode
&= ~current_umask();
2666 state
= nfs4_do_open(dir
, de
, fmode
, flags
, sattr
, cred
);
2668 if (IS_ERR(state
)) {
2669 status
= PTR_ERR(state
);
2672 d_add(dentry
, igrab(state
->inode
));
2673 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2677 nfs4_close_sync(state
, fmode
);
2682 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2684 struct nfs_server
*server
= NFS_SERVER(dir
);
2685 struct nfs_removeargs args
= {
2687 .name
.len
= name
->len
,
2688 .name
.name
= name
->name
,
2689 .bitmask
= server
->attr_bitmask
,
2691 struct nfs_removeres res
= {
2694 struct rpc_message msg
= {
2695 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2699 int status
= -ENOMEM
;
2701 res
.dir_attr
= nfs_alloc_fattr();
2702 if (res
.dir_attr
== NULL
)
2705 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2707 update_changeattr(dir
, &res
.cinfo
);
2708 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2710 nfs_free_fattr(res
.dir_attr
);
2715 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2717 struct nfs4_exception exception
= { };
2720 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2721 _nfs4_proc_remove(dir
, name
),
2723 } while (exception
.retry
);
2727 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2729 struct nfs_server
*server
= NFS_SERVER(dir
);
2730 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2731 struct nfs_removeres
*res
= msg
->rpc_resp
;
2733 args
->bitmask
= server
->cache_consistency_bitmask
;
2734 res
->server
= server
;
2735 res
->seq_res
.sr_slot
= NULL
;
2736 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2739 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2741 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2743 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2745 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2747 update_changeattr(dir
, &res
->cinfo
);
2748 nfs_post_op_update_inode(dir
, res
->dir_attr
);
2752 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2754 struct nfs_server
*server
= NFS_SERVER(dir
);
2755 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2756 struct nfs_renameres
*res
= msg
->rpc_resp
;
2758 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2759 arg
->bitmask
= server
->attr_bitmask
;
2760 res
->server
= server
;
2763 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2764 struct inode
*new_dir
)
2766 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2768 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2770 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2773 update_changeattr(old_dir
, &res
->old_cinfo
);
2774 nfs_post_op_update_inode(old_dir
, res
->old_fattr
);
2775 update_changeattr(new_dir
, &res
->new_cinfo
);
2776 nfs_post_op_update_inode(new_dir
, res
->new_fattr
);
2780 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2781 struct inode
*new_dir
, struct qstr
*new_name
)
2783 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2784 struct nfs_renameargs arg
= {
2785 .old_dir
= NFS_FH(old_dir
),
2786 .new_dir
= NFS_FH(new_dir
),
2787 .old_name
= old_name
,
2788 .new_name
= new_name
,
2789 .bitmask
= server
->attr_bitmask
,
2791 struct nfs_renameres res
= {
2794 struct rpc_message msg
= {
2795 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2799 int status
= -ENOMEM
;
2801 res
.old_fattr
= nfs_alloc_fattr();
2802 res
.new_fattr
= nfs_alloc_fattr();
2803 if (res
.old_fattr
== NULL
|| res
.new_fattr
== NULL
)
2806 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2808 update_changeattr(old_dir
, &res
.old_cinfo
);
2809 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2810 update_changeattr(new_dir
, &res
.new_cinfo
);
2811 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2814 nfs_free_fattr(res
.new_fattr
);
2815 nfs_free_fattr(res
.old_fattr
);
2819 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2820 struct inode
*new_dir
, struct qstr
*new_name
)
2822 struct nfs4_exception exception
= { };
2825 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2826 _nfs4_proc_rename(old_dir
, old_name
,
2829 } while (exception
.retry
);
2833 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2835 struct nfs_server
*server
= NFS_SERVER(inode
);
2836 struct nfs4_link_arg arg
= {
2837 .fh
= NFS_FH(inode
),
2838 .dir_fh
= NFS_FH(dir
),
2840 .bitmask
= server
->attr_bitmask
,
2842 struct nfs4_link_res res
= {
2845 struct rpc_message msg
= {
2846 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2850 int status
= -ENOMEM
;
2852 res
.fattr
= nfs_alloc_fattr();
2853 res
.dir_attr
= nfs_alloc_fattr();
2854 if (res
.fattr
== NULL
|| res
.dir_attr
== NULL
)
2857 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2859 update_changeattr(dir
, &res
.cinfo
);
2860 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2861 nfs_post_op_update_inode(inode
, res
.fattr
);
2864 nfs_free_fattr(res
.dir_attr
);
2865 nfs_free_fattr(res
.fattr
);
2869 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2871 struct nfs4_exception exception
= { };
2874 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2875 _nfs4_proc_link(inode
, dir
, name
),
2877 } while (exception
.retry
);
2881 struct nfs4_createdata
{
2882 struct rpc_message msg
;
2883 struct nfs4_create_arg arg
;
2884 struct nfs4_create_res res
;
2886 struct nfs_fattr fattr
;
2887 struct nfs_fattr dir_fattr
;
2890 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2891 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2893 struct nfs4_createdata
*data
;
2895 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2897 struct nfs_server
*server
= NFS_SERVER(dir
);
2899 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2900 data
->msg
.rpc_argp
= &data
->arg
;
2901 data
->msg
.rpc_resp
= &data
->res
;
2902 data
->arg
.dir_fh
= NFS_FH(dir
);
2903 data
->arg
.server
= server
;
2904 data
->arg
.name
= name
;
2905 data
->arg
.attrs
= sattr
;
2906 data
->arg
.ftype
= ftype
;
2907 data
->arg
.bitmask
= server
->attr_bitmask
;
2908 data
->res
.server
= server
;
2909 data
->res
.fh
= &data
->fh
;
2910 data
->res
.fattr
= &data
->fattr
;
2911 data
->res
.dir_fattr
= &data
->dir_fattr
;
2912 nfs_fattr_init(data
->res
.fattr
);
2913 nfs_fattr_init(data
->res
.dir_fattr
);
2918 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2920 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
2921 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
2923 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2924 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2925 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2930 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2935 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2936 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2938 struct nfs4_createdata
*data
;
2939 int status
= -ENAMETOOLONG
;
2941 if (len
> NFS4_MAXPATHLEN
)
2945 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2949 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2950 data
->arg
.u
.symlink
.pages
= &page
;
2951 data
->arg
.u
.symlink
.len
= len
;
2953 status
= nfs4_do_create(dir
, dentry
, data
);
2955 nfs4_free_createdata(data
);
2960 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2961 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2963 struct nfs4_exception exception
= { };
2966 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2967 _nfs4_proc_symlink(dir
, dentry
, page
,
2970 } while (exception
.retry
);
2974 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2975 struct iattr
*sattr
)
2977 struct nfs4_createdata
*data
;
2978 int status
= -ENOMEM
;
2980 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2984 status
= nfs4_do_create(dir
, dentry
, data
);
2986 nfs4_free_createdata(data
);
2991 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2992 struct iattr
*sattr
)
2994 struct nfs4_exception exception
= { };
2997 sattr
->ia_mode
&= ~current_umask();
2999 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3000 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3002 } while (exception
.retry
);
3006 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3007 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3009 struct inode
*dir
= dentry
->d_inode
;
3010 struct nfs4_readdir_arg args
= {
3015 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3018 struct nfs4_readdir_res res
;
3019 struct rpc_message msg
= {
3020 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3027 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3028 dentry
->d_parent
->d_name
.name
,
3029 dentry
->d_name
.name
,
3030 (unsigned long long)cookie
);
3031 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
3032 res
.pgbase
= args
.pgbase
;
3033 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3035 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3036 status
+= args
.pgbase
;
3039 nfs_invalidate_atime(dir
);
3041 dprintk("%s: returns %d\n", __func__
, status
);
3045 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3046 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3048 struct nfs4_exception exception
= { };
3051 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3052 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3053 pages
, count
, plus
),
3055 } while (exception
.retry
);
3059 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3060 struct iattr
*sattr
, dev_t rdev
)
3062 struct nfs4_createdata
*data
;
3063 int mode
= sattr
->ia_mode
;
3064 int status
= -ENOMEM
;
3066 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
3067 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
3069 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3074 data
->arg
.ftype
= NF4FIFO
;
3075 else if (S_ISBLK(mode
)) {
3076 data
->arg
.ftype
= NF4BLK
;
3077 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3078 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3080 else if (S_ISCHR(mode
)) {
3081 data
->arg
.ftype
= NF4CHR
;
3082 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3083 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3086 status
= nfs4_do_create(dir
, dentry
, data
);
3088 nfs4_free_createdata(data
);
3093 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3094 struct iattr
*sattr
, dev_t rdev
)
3096 struct nfs4_exception exception
= { };
3099 sattr
->ia_mode
&= ~current_umask();
3101 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3102 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3104 } while (exception
.retry
);
3108 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3109 struct nfs_fsstat
*fsstat
)
3111 struct nfs4_statfs_arg args
= {
3113 .bitmask
= server
->attr_bitmask
,
3115 struct nfs4_statfs_res res
= {
3118 struct rpc_message msg
= {
3119 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3124 nfs_fattr_init(fsstat
->fattr
);
3125 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3128 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3130 struct nfs4_exception exception
= { };
3133 err
= nfs4_handle_exception(server
,
3134 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3136 } while (exception
.retry
);
3140 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3141 struct nfs_fsinfo
*fsinfo
)
3143 struct nfs4_fsinfo_arg args
= {
3145 .bitmask
= server
->attr_bitmask
,
3147 struct nfs4_fsinfo_res res
= {
3150 struct rpc_message msg
= {
3151 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3156 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3159 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3161 struct nfs4_exception exception
= { };
3165 err
= nfs4_handle_exception(server
,
3166 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3168 } while (exception
.retry
);
3172 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3174 nfs_fattr_init(fsinfo
->fattr
);
3175 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3178 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3179 struct nfs_pathconf
*pathconf
)
3181 struct nfs4_pathconf_arg args
= {
3183 .bitmask
= server
->attr_bitmask
,
3185 struct nfs4_pathconf_res res
= {
3186 .pathconf
= pathconf
,
3188 struct rpc_message msg
= {
3189 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3194 /* None of the pathconf attributes are mandatory to implement */
3195 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3196 memset(pathconf
, 0, sizeof(*pathconf
));
3200 nfs_fattr_init(pathconf
->fattr
);
3201 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3204 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3205 struct nfs_pathconf
*pathconf
)
3207 struct nfs4_exception exception
= { };
3211 err
= nfs4_handle_exception(server
,
3212 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3214 } while (exception
.retry
);
3218 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3220 nfs_invalidate_atime(data
->inode
);
3223 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3225 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3227 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3228 rpc_restart_call_prepare(task
);
3232 __nfs4_read_done_cb(data
);
3233 if (task
->tk_status
> 0)
3234 renew_lease(server
, data
->timestamp
);
3238 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3241 dprintk("--> %s\n", __func__
);
3243 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3246 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3247 nfs4_read_done_cb(task
, data
);
3250 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3252 data
->timestamp
= jiffies
;
3253 data
->read_done_cb
= nfs4_read_done_cb
;
3254 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3257 /* Reset the the nfs_read_data to send the read to the MDS. */
3258 void nfs4_reset_read(struct rpc_task
*task
, struct nfs_read_data
*data
)
3260 dprintk("%s Reset task for i/o through\n", __func__
);
3261 put_lseg(data
->lseg
);
3263 /* offsets will differ in the dense stripe case */
3264 data
->args
.offset
= data
->mds_offset
;
3265 data
->ds_clp
= NULL
;
3266 data
->args
.fh
= NFS_FH(data
->inode
);
3267 data
->read_done_cb
= nfs4_read_done_cb
;
3268 task
->tk_ops
= data
->mds_ops
;
3269 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3271 EXPORT_SYMBOL_GPL(nfs4_reset_read
);
3273 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3275 struct inode
*inode
= data
->inode
;
3277 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3278 rpc_restart_call_prepare(task
);
3281 if (task
->tk_status
>= 0) {
3282 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3283 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3288 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3290 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3292 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3293 nfs4_write_done_cb(task
, data
);
3296 /* Reset the the nfs_write_data to send the write to the MDS. */
3297 void nfs4_reset_write(struct rpc_task
*task
, struct nfs_write_data
*data
)
3299 dprintk("%s Reset task for i/o through\n", __func__
);
3300 put_lseg(data
->lseg
);
3302 data
->ds_clp
= NULL
;
3303 data
->write_done_cb
= nfs4_write_done_cb
;
3304 data
->args
.fh
= NFS_FH(data
->inode
);
3305 data
->args
.bitmask
= data
->res
.server
->cache_consistency_bitmask
;
3306 data
->args
.offset
= data
->mds_offset
;
3307 data
->res
.fattr
= &data
->fattr
;
3308 task
->tk_ops
= data
->mds_ops
;
3309 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3311 EXPORT_SYMBOL_GPL(nfs4_reset_write
);
3313 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3315 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3318 data
->args
.bitmask
= NULL
;
3319 data
->res
.fattr
= NULL
;
3321 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3322 if (!data
->write_done_cb
)
3323 data
->write_done_cb
= nfs4_write_done_cb
;
3324 data
->res
.server
= server
;
3325 data
->timestamp
= jiffies
;
3327 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3330 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3332 struct inode
*inode
= data
->inode
;
3334 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3335 rpc_restart_call_prepare(task
);
3338 nfs_refresh_inode(inode
, data
->res
.fattr
);
3342 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3344 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3346 return data
->write_done_cb(task
, data
);
3349 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3351 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3354 data
->args
.bitmask
= NULL
;
3355 data
->res
.fattr
= NULL
;
3357 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3358 if (!data
->write_done_cb
)
3359 data
->write_done_cb
= nfs4_commit_done_cb
;
3360 data
->res
.server
= server
;
3361 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3364 struct nfs4_renewdata
{
3365 struct nfs_client
*client
;
3366 unsigned long timestamp
;
3370 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3371 * standalone procedure for queueing an asynchronous RENEW.
3373 static void nfs4_renew_release(void *calldata
)
3375 struct nfs4_renewdata
*data
= calldata
;
3376 struct nfs_client
*clp
= data
->client
;
3378 if (atomic_read(&clp
->cl_count
) > 1)
3379 nfs4_schedule_state_renewal(clp
);
3380 nfs_put_client(clp
);
3384 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3386 struct nfs4_renewdata
*data
= calldata
;
3387 struct nfs_client
*clp
= data
->client
;
3388 unsigned long timestamp
= data
->timestamp
;
3390 if (task
->tk_status
< 0) {
3391 /* Unless we're shutting down, schedule state recovery! */
3392 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3394 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3395 nfs4_schedule_lease_recovery(clp
);
3398 nfs4_schedule_path_down_recovery(clp
);
3400 do_renew_lease(clp
, timestamp
);
3403 static const struct rpc_call_ops nfs4_renew_ops
= {
3404 .rpc_call_done
= nfs4_renew_done
,
3405 .rpc_release
= nfs4_renew_release
,
3408 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3410 struct rpc_message msg
= {
3411 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3415 struct nfs4_renewdata
*data
;
3417 if (renew_flags
== 0)
3419 if (!atomic_inc_not_zero(&clp
->cl_count
))
3421 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3425 data
->timestamp
= jiffies
;
3426 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3427 &nfs4_renew_ops
, data
);
3430 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3432 struct rpc_message msg
= {
3433 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3437 unsigned long now
= jiffies
;
3440 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3443 do_renew_lease(clp
, now
);
3447 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3449 return (server
->caps
& NFS_CAP_ACLS
)
3450 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3451 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3454 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3455 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3458 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3460 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3461 struct page
**pages
, unsigned int *pgbase
)
3463 struct page
*newpage
, **spages
;
3469 len
= min_t(size_t, PAGE_CACHE_SIZE
, buflen
);
3470 newpage
= alloc_page(GFP_KERNEL
);
3472 if (newpage
== NULL
)
3474 memcpy(page_address(newpage
), buf
, len
);
3479 } while (buflen
!= 0);
3485 __free_page(spages
[rc
-1]);
3489 struct nfs4_cached_acl
{
3495 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3497 struct nfs_inode
*nfsi
= NFS_I(inode
);
3499 spin_lock(&inode
->i_lock
);
3500 kfree(nfsi
->nfs4_acl
);
3501 nfsi
->nfs4_acl
= acl
;
3502 spin_unlock(&inode
->i_lock
);
3505 static void nfs4_zap_acl_attr(struct inode
*inode
)
3507 nfs4_set_cached_acl(inode
, NULL
);
3510 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3512 struct nfs_inode
*nfsi
= NFS_I(inode
);
3513 struct nfs4_cached_acl
*acl
;
3516 spin_lock(&inode
->i_lock
);
3517 acl
= nfsi
->nfs4_acl
;
3520 if (buf
== NULL
) /* user is just asking for length */
3522 if (acl
->cached
== 0)
3524 ret
= -ERANGE
; /* see getxattr(2) man page */
3525 if (acl
->len
> buflen
)
3527 memcpy(buf
, acl
->data
, acl
->len
);
3531 spin_unlock(&inode
->i_lock
);
3535 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3537 struct nfs4_cached_acl
*acl
;
3539 if (pages
&& acl_len
<= PAGE_SIZE
) {
3540 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3544 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3546 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3553 nfs4_set_cached_acl(inode
, acl
);
3557 * The getxattr API returns the required buffer length when called with a
3558 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3559 * the required buf. On a NULL buf, we send a page of data to the server
3560 * guessing that the ACL request can be serviced by a page. If so, we cache
3561 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3562 * the cache. If not so, we throw away the page, and cache the required
3563 * length. The next getxattr call will then produce another round trip to
3564 * the server, this time with the input buf of the required size.
3566 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3568 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3569 struct nfs_getaclargs args
= {
3570 .fh
= NFS_FH(inode
),
3574 struct nfs_getaclres res
= {
3577 struct rpc_message msg
= {
3578 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3582 int ret
= -ENOMEM
, npages
, i
, acl_len
= 0;
3584 npages
= (buflen
+ PAGE_SIZE
- 1) >> PAGE_SHIFT
;
3585 /* As long as we're doing a round trip to the server anyway,
3586 * let's be prepared for a page of acl data. */
3590 for (i
= 0; i
< npages
; i
++) {
3591 pages
[i
] = alloc_page(GFP_KERNEL
);
3596 /* for decoding across pages */
3597 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3598 if (!res
.acl_scratch
)
3601 args
.acl_len
= npages
* PAGE_SIZE
;
3602 args
.acl_pgbase
= 0;
3603 /* Let decode_getfacl know not to fail if the ACL data is larger than
3604 * the page we send as a guess */
3606 res
.acl_flags
|= NFS4_ACL_LEN_REQUEST
;
3608 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3609 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3610 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3611 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3615 acl_len
= res
.acl_len
- res
.acl_data_offset
;
3616 if (acl_len
> args
.acl_len
)
3617 nfs4_write_cached_acl(inode
, NULL
, 0, acl_len
);
3619 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
,
3623 if (acl_len
> buflen
)
3625 _copy_from_pages(buf
, pages
, res
.acl_data_offset
,
3630 for (i
= 0; i
< npages
; i
++)
3632 __free_page(pages
[i
]);
3633 if (res
.acl_scratch
)
3634 __free_page(res
.acl_scratch
);
3638 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3640 struct nfs4_exception exception
= { };
3643 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3646 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3647 } while (exception
.retry
);
3651 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3653 struct nfs_server
*server
= NFS_SERVER(inode
);
3656 if (!nfs4_server_supports_acls(server
))
3658 ret
= nfs_revalidate_inode(server
, inode
);
3661 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3662 nfs_zap_acl_cache(inode
);
3663 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3665 /* -ENOENT is returned if there is no ACL or if there is an ACL
3666 * but no cached acl data, just the acl length */
3668 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3671 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3673 struct nfs_server
*server
= NFS_SERVER(inode
);
3674 struct page
*pages
[NFS4ACL_MAXPAGES
];
3675 struct nfs_setaclargs arg
= {
3676 .fh
= NFS_FH(inode
),
3680 struct nfs_setaclres res
;
3681 struct rpc_message msg
= {
3682 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3688 if (!nfs4_server_supports_acls(server
))
3690 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3693 nfs_inode_return_delegation(inode
);
3694 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3697 * Free each page after tx, so the only ref left is
3698 * held by the network stack
3701 put_page(pages
[i
-1]);
3704 * Acl update can result in inode attribute update.
3705 * so mark the attribute cache invalid.
3707 spin_lock(&inode
->i_lock
);
3708 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3709 spin_unlock(&inode
->i_lock
);
3710 nfs_access_zap_cache(inode
);
3711 nfs_zap_acl_cache(inode
);
3715 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3717 struct nfs4_exception exception
= { };
3720 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3721 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3723 } while (exception
.retry
);
3728 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3730 struct nfs_client
*clp
= server
->nfs_client
;
3732 if (task
->tk_status
>= 0)
3734 switch(task
->tk_status
) {
3735 case -NFS4ERR_DELEG_REVOKED
:
3736 case -NFS4ERR_ADMIN_REVOKED
:
3737 case -NFS4ERR_BAD_STATEID
:
3739 nfs_remove_bad_delegation(state
->inode
);
3740 case -NFS4ERR_OPENMODE
:
3743 nfs4_schedule_stateid_recovery(server
, state
);
3744 goto wait_on_recovery
;
3745 case -NFS4ERR_EXPIRED
:
3747 nfs4_schedule_stateid_recovery(server
, state
);
3748 case -NFS4ERR_STALE_STATEID
:
3749 case -NFS4ERR_STALE_CLIENTID
:
3750 nfs4_schedule_lease_recovery(clp
);
3751 goto wait_on_recovery
;
3752 #if defined(CONFIG_NFS_V4_1)
3753 case -NFS4ERR_BADSESSION
:
3754 case -NFS4ERR_BADSLOT
:
3755 case -NFS4ERR_BAD_HIGH_SLOT
:
3756 case -NFS4ERR_DEADSESSION
:
3757 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3758 case -NFS4ERR_SEQ_FALSE_RETRY
:
3759 case -NFS4ERR_SEQ_MISORDERED
:
3760 dprintk("%s ERROR %d, Reset session\n", __func__
,
3762 nfs4_schedule_session_recovery(clp
->cl_session
);
3763 task
->tk_status
= 0;
3765 #endif /* CONFIG_NFS_V4_1 */
3766 case -NFS4ERR_DELAY
:
3767 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3768 case -NFS4ERR_GRACE
:
3770 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3771 task
->tk_status
= 0;
3773 case -NFS4ERR_RETRY_UNCACHED_REP
:
3774 case -NFS4ERR_OLD_STATEID
:
3775 task
->tk_status
= 0;
3778 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3781 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3782 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3783 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3784 task
->tk_status
= 0;
3788 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
3789 unsigned short port
, struct rpc_cred
*cred
,
3790 struct nfs4_setclientid_res
*res
)
3792 nfs4_verifier sc_verifier
;
3793 struct nfs4_setclientid setclientid
= {
3794 .sc_verifier
= &sc_verifier
,
3796 .sc_cb_ident
= clp
->cl_cb_ident
,
3798 struct rpc_message msg
= {
3799 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3800 .rpc_argp
= &setclientid
,
3808 p
= (__be32
*)sc_verifier
.data
;
3809 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3810 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3813 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3814 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3816 rpc_peeraddr2str(clp
->cl_rpcclient
,
3818 rpc_peeraddr2str(clp
->cl_rpcclient
,
3820 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3821 clp
->cl_id_uniquifier
);
3822 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3823 sizeof(setclientid
.sc_netid
),
3824 rpc_peeraddr2str(clp
->cl_rpcclient
,
3825 RPC_DISPLAY_NETID
));
3826 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3827 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3828 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3830 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3831 if (status
!= -NFS4ERR_CLID_INUSE
)
3834 ++clp
->cl_id_uniquifier
;
3838 ssleep(clp
->cl_lease_time
/ HZ
+ 1);
3843 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3844 struct nfs4_setclientid_res
*arg
,
3845 struct rpc_cred
*cred
)
3847 struct nfs_fsinfo fsinfo
;
3848 struct rpc_message msg
= {
3849 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3851 .rpc_resp
= &fsinfo
,
3858 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3860 spin_lock(&clp
->cl_lock
);
3861 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3862 clp
->cl_last_renewal
= now
;
3863 spin_unlock(&clp
->cl_lock
);
3868 struct nfs4_delegreturndata
{
3869 struct nfs4_delegreturnargs args
;
3870 struct nfs4_delegreturnres res
;
3872 nfs4_stateid stateid
;
3873 unsigned long timestamp
;
3874 struct nfs_fattr fattr
;
3878 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3880 struct nfs4_delegreturndata
*data
= calldata
;
3882 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3885 switch (task
->tk_status
) {
3886 case -NFS4ERR_STALE_STATEID
:
3887 case -NFS4ERR_EXPIRED
:
3889 renew_lease(data
->res
.server
, data
->timestamp
);
3892 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
3894 rpc_restart_call_prepare(task
);
3898 data
->rpc_status
= task
->tk_status
;
3901 static void nfs4_delegreturn_release(void *calldata
)
3906 #if defined(CONFIG_NFS_V4_1)
3907 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3909 struct nfs4_delegreturndata
*d_data
;
3911 d_data
= (struct nfs4_delegreturndata
*)data
;
3913 if (nfs4_setup_sequence(d_data
->res
.server
,
3914 &d_data
->args
.seq_args
,
3915 &d_data
->res
.seq_res
, 1, task
))
3917 rpc_call_start(task
);
3919 #endif /* CONFIG_NFS_V4_1 */
3921 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3922 #if defined(CONFIG_NFS_V4_1)
3923 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3924 #endif /* CONFIG_NFS_V4_1 */
3925 .rpc_call_done
= nfs4_delegreturn_done
,
3926 .rpc_release
= nfs4_delegreturn_release
,
3929 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3931 struct nfs4_delegreturndata
*data
;
3932 struct nfs_server
*server
= NFS_SERVER(inode
);
3933 struct rpc_task
*task
;
3934 struct rpc_message msg
= {
3935 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3938 struct rpc_task_setup task_setup_data
= {
3939 .rpc_client
= server
->client
,
3940 .rpc_message
= &msg
,
3941 .callback_ops
= &nfs4_delegreturn_ops
,
3942 .flags
= RPC_TASK_ASYNC
,
3946 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
3949 data
->args
.fhandle
= &data
->fh
;
3950 data
->args
.stateid
= &data
->stateid
;
3951 data
->args
.bitmask
= server
->attr_bitmask
;
3952 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3953 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3954 data
->res
.fattr
= &data
->fattr
;
3955 data
->res
.server
= server
;
3956 nfs_fattr_init(data
->res
.fattr
);
3957 data
->timestamp
= jiffies
;
3958 data
->rpc_status
= 0;
3960 task_setup_data
.callback_data
= data
;
3961 msg
.rpc_argp
= &data
->args
;
3962 msg
.rpc_resp
= &data
->res
;
3963 task
= rpc_run_task(&task_setup_data
);
3965 return PTR_ERR(task
);
3968 status
= nfs4_wait_for_completion_rpc_task(task
);
3971 status
= data
->rpc_status
;
3974 nfs_refresh_inode(inode
, &data
->fattr
);
3980 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3982 struct nfs_server
*server
= NFS_SERVER(inode
);
3983 struct nfs4_exception exception
= { };
3986 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3988 case -NFS4ERR_STALE_STATEID
:
3989 case -NFS4ERR_EXPIRED
:
3993 err
= nfs4_handle_exception(server
, err
, &exception
);
3994 } while (exception
.retry
);
3998 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3999 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4002 * sleep, with exponential backoff, and retry the LOCK operation.
4004 static unsigned long
4005 nfs4_set_lock_task_retry(unsigned long timeout
)
4007 freezable_schedule_timeout_killable(timeout
);
4009 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4010 return NFS4_LOCK_MAXTIMEOUT
;
4014 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4016 struct inode
*inode
= state
->inode
;
4017 struct nfs_server
*server
= NFS_SERVER(inode
);
4018 struct nfs_client
*clp
= server
->nfs_client
;
4019 struct nfs_lockt_args arg
= {
4020 .fh
= NFS_FH(inode
),
4023 struct nfs_lockt_res res
= {
4026 struct rpc_message msg
= {
4027 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4030 .rpc_cred
= state
->owner
->so_cred
,
4032 struct nfs4_lock_state
*lsp
;
4035 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4036 status
= nfs4_set_lock_state(state
, request
);
4039 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4040 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
4041 arg
.lock_owner
.s_dev
= server
->s_dev
;
4042 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4045 request
->fl_type
= F_UNLCK
;
4047 case -NFS4ERR_DENIED
:
4050 request
->fl_ops
->fl_release_private(request
);
4055 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4057 struct nfs4_exception exception
= { };
4061 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4062 _nfs4_proc_getlk(state
, cmd
, request
),
4064 } while (exception
.retry
);
4068 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4071 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4073 res
= posix_lock_file_wait(file
, fl
);
4076 res
= flock_lock_file_wait(file
, fl
);
4084 struct nfs4_unlockdata
{
4085 struct nfs_locku_args arg
;
4086 struct nfs_locku_res res
;
4087 struct nfs4_lock_state
*lsp
;
4088 struct nfs_open_context
*ctx
;
4089 struct file_lock fl
;
4090 const struct nfs_server
*server
;
4091 unsigned long timestamp
;
4094 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4095 struct nfs_open_context
*ctx
,
4096 struct nfs4_lock_state
*lsp
,
4097 struct nfs_seqid
*seqid
)
4099 struct nfs4_unlockdata
*p
;
4100 struct inode
*inode
= lsp
->ls_state
->inode
;
4102 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4105 p
->arg
.fh
= NFS_FH(inode
);
4107 p
->arg
.seqid
= seqid
;
4108 p
->res
.seqid
= seqid
;
4109 p
->arg
.stateid
= &lsp
->ls_stateid
;
4111 atomic_inc(&lsp
->ls_count
);
4112 /* Ensure we don't close file until we're done freeing locks! */
4113 p
->ctx
= get_nfs_open_context(ctx
);
4114 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4115 p
->server
= NFS_SERVER(inode
);
4119 static void nfs4_locku_release_calldata(void *data
)
4121 struct nfs4_unlockdata
*calldata
= data
;
4122 nfs_free_seqid(calldata
->arg
.seqid
);
4123 nfs4_put_lock_state(calldata
->lsp
);
4124 put_nfs_open_context(calldata
->ctx
);
4128 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4130 struct nfs4_unlockdata
*calldata
= data
;
4132 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4134 switch (task
->tk_status
) {
4136 memcpy(calldata
->lsp
->ls_stateid
.data
,
4137 calldata
->res
.stateid
.data
,
4138 sizeof(calldata
->lsp
->ls_stateid
.data
));
4139 renew_lease(calldata
->server
, calldata
->timestamp
);
4141 case -NFS4ERR_BAD_STATEID
:
4142 case -NFS4ERR_OLD_STATEID
:
4143 case -NFS4ERR_STALE_STATEID
:
4144 case -NFS4ERR_EXPIRED
:
4147 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4148 rpc_restart_call_prepare(task
);
4152 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4154 struct nfs4_unlockdata
*calldata
= data
;
4156 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4158 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
4159 /* Note: exit _without_ running nfs4_locku_done */
4160 task
->tk_action
= NULL
;
4163 calldata
->timestamp
= jiffies
;
4164 if (nfs4_setup_sequence(calldata
->server
,
4165 &calldata
->arg
.seq_args
,
4166 &calldata
->res
.seq_res
, 1, task
))
4168 rpc_call_start(task
);
4171 static const struct rpc_call_ops nfs4_locku_ops
= {
4172 .rpc_call_prepare
= nfs4_locku_prepare
,
4173 .rpc_call_done
= nfs4_locku_done
,
4174 .rpc_release
= nfs4_locku_release_calldata
,
4177 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4178 struct nfs_open_context
*ctx
,
4179 struct nfs4_lock_state
*lsp
,
4180 struct nfs_seqid
*seqid
)
4182 struct nfs4_unlockdata
*data
;
4183 struct rpc_message msg
= {
4184 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4185 .rpc_cred
= ctx
->cred
,
4187 struct rpc_task_setup task_setup_data
= {
4188 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4189 .rpc_message
= &msg
,
4190 .callback_ops
= &nfs4_locku_ops
,
4191 .workqueue
= nfsiod_workqueue
,
4192 .flags
= RPC_TASK_ASYNC
,
4195 /* Ensure this is an unlock - when canceling a lock, the
4196 * canceled lock is passed in, and it won't be an unlock.
4198 fl
->fl_type
= F_UNLCK
;
4200 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4202 nfs_free_seqid(seqid
);
4203 return ERR_PTR(-ENOMEM
);
4206 msg
.rpc_argp
= &data
->arg
;
4207 msg
.rpc_resp
= &data
->res
;
4208 task_setup_data
.callback_data
= data
;
4209 return rpc_run_task(&task_setup_data
);
4212 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4214 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4215 struct nfs_seqid
*seqid
;
4216 struct nfs4_lock_state
*lsp
;
4217 struct rpc_task
*task
;
4219 unsigned char fl_flags
= request
->fl_flags
;
4221 status
= nfs4_set_lock_state(state
, request
);
4222 /* Unlock _before_ we do the RPC call */
4223 request
->fl_flags
|= FL_EXISTS
;
4224 down_read(&nfsi
->rwsem
);
4225 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4226 up_read(&nfsi
->rwsem
);
4229 up_read(&nfsi
->rwsem
);
4232 /* Is this a delegated lock? */
4233 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4235 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4236 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4240 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4241 status
= PTR_ERR(task
);
4244 status
= nfs4_wait_for_completion_rpc_task(task
);
4247 request
->fl_flags
= fl_flags
;
4251 struct nfs4_lockdata
{
4252 struct nfs_lock_args arg
;
4253 struct nfs_lock_res res
;
4254 struct nfs4_lock_state
*lsp
;
4255 struct nfs_open_context
*ctx
;
4256 struct file_lock fl
;
4257 unsigned long timestamp
;
4260 struct nfs_server
*server
;
4263 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4264 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4267 struct nfs4_lockdata
*p
;
4268 struct inode
*inode
= lsp
->ls_state
->inode
;
4269 struct nfs_server
*server
= NFS_SERVER(inode
);
4271 p
= kzalloc(sizeof(*p
), gfp_mask
);
4275 p
->arg
.fh
= NFS_FH(inode
);
4277 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4278 if (p
->arg
.open_seqid
== NULL
)
4280 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4281 if (p
->arg
.lock_seqid
== NULL
)
4282 goto out_free_seqid
;
4283 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4284 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4285 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
4286 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4287 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4290 atomic_inc(&lsp
->ls_count
);
4291 p
->ctx
= get_nfs_open_context(ctx
);
4292 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4295 nfs_free_seqid(p
->arg
.open_seqid
);
4301 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4303 struct nfs4_lockdata
*data
= calldata
;
4304 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4306 dprintk("%s: begin!\n", __func__
);
4307 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4309 /* Do we need to do an open_to_lock_owner? */
4310 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4311 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4313 data
->arg
.open_stateid
= &state
->stateid
;
4314 data
->arg
.new_lock_owner
= 1;
4315 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4317 data
->arg
.new_lock_owner
= 0;
4318 data
->timestamp
= jiffies
;
4319 if (nfs4_setup_sequence(data
->server
,
4320 &data
->arg
.seq_args
,
4321 &data
->res
.seq_res
, 1, task
))
4323 rpc_call_start(task
);
4324 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4327 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4329 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4330 nfs4_lock_prepare(task
, calldata
);
4333 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4335 struct nfs4_lockdata
*data
= calldata
;
4337 dprintk("%s: begin!\n", __func__
);
4339 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4342 data
->rpc_status
= task
->tk_status
;
4343 if (data
->arg
.new_lock_owner
!= 0) {
4344 if (data
->rpc_status
== 0)
4345 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4349 if (data
->rpc_status
== 0) {
4350 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
4351 sizeof(data
->lsp
->ls_stateid
.data
));
4352 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4353 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4356 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4359 static void nfs4_lock_release(void *calldata
)
4361 struct nfs4_lockdata
*data
= calldata
;
4363 dprintk("%s: begin!\n", __func__
);
4364 nfs_free_seqid(data
->arg
.open_seqid
);
4365 if (data
->cancelled
!= 0) {
4366 struct rpc_task
*task
;
4367 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4368 data
->arg
.lock_seqid
);
4370 rpc_put_task_async(task
);
4371 dprintk("%s: cancelling lock!\n", __func__
);
4373 nfs_free_seqid(data
->arg
.lock_seqid
);
4374 nfs4_put_lock_state(data
->lsp
);
4375 put_nfs_open_context(data
->ctx
);
4377 dprintk("%s: done!\n", __func__
);
4380 static const struct rpc_call_ops nfs4_lock_ops
= {
4381 .rpc_call_prepare
= nfs4_lock_prepare
,
4382 .rpc_call_done
= nfs4_lock_done
,
4383 .rpc_release
= nfs4_lock_release
,
4386 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4387 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4388 .rpc_call_done
= nfs4_lock_done
,
4389 .rpc_release
= nfs4_lock_release
,
4392 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4395 case -NFS4ERR_ADMIN_REVOKED
:
4396 case -NFS4ERR_BAD_STATEID
:
4397 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4398 if (new_lock_owner
!= 0 ||
4399 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4400 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4402 case -NFS4ERR_STALE_STATEID
:
4403 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4404 case -NFS4ERR_EXPIRED
:
4405 nfs4_schedule_lease_recovery(server
->nfs_client
);
4409 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4411 struct nfs4_lockdata
*data
;
4412 struct rpc_task
*task
;
4413 struct rpc_message msg
= {
4414 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4415 .rpc_cred
= state
->owner
->so_cred
,
4417 struct rpc_task_setup task_setup_data
= {
4418 .rpc_client
= NFS_CLIENT(state
->inode
),
4419 .rpc_message
= &msg
,
4420 .callback_ops
= &nfs4_lock_ops
,
4421 .workqueue
= nfsiod_workqueue
,
4422 .flags
= RPC_TASK_ASYNC
,
4426 dprintk("%s: begin!\n", __func__
);
4427 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4428 fl
->fl_u
.nfs4_fl
.owner
,
4429 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4433 data
->arg
.block
= 1;
4434 if (recovery_type
> NFS_LOCK_NEW
) {
4435 if (recovery_type
== NFS_LOCK_RECLAIM
)
4436 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4437 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4439 msg
.rpc_argp
= &data
->arg
;
4440 msg
.rpc_resp
= &data
->res
;
4441 task_setup_data
.callback_data
= data
;
4442 task
= rpc_run_task(&task_setup_data
);
4444 return PTR_ERR(task
);
4445 ret
= nfs4_wait_for_completion_rpc_task(task
);
4447 ret
= data
->rpc_status
;
4449 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4450 data
->arg
.new_lock_owner
, ret
);
4452 data
->cancelled
= 1;
4454 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4458 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4460 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4461 struct nfs4_exception exception
= {
4462 .inode
= state
->inode
,
4467 /* Cache the lock if possible... */
4468 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4470 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4471 if (err
!= -NFS4ERR_DELAY
)
4473 nfs4_handle_exception(server
, err
, &exception
);
4474 } while (exception
.retry
);
4478 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4480 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4481 struct nfs4_exception exception
= {
4482 .inode
= state
->inode
,
4486 err
= nfs4_set_lock_state(state
, request
);
4490 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4492 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4496 case -NFS4ERR_GRACE
:
4497 case -NFS4ERR_DELAY
:
4498 nfs4_handle_exception(server
, err
, &exception
);
4501 } while (exception
.retry
);
4506 #if defined(CONFIG_NFS_V4_1)
4507 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4510 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4512 status
= nfs41_test_stateid(server
, state
);
4513 if (status
== NFS_OK
)
4515 nfs41_free_stateid(server
, state
);
4516 return nfs4_lock_expired(state
, request
);
4520 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4522 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4523 unsigned char fl_flags
= request
->fl_flags
;
4524 int status
= -ENOLCK
;
4526 if ((fl_flags
& FL_POSIX
) &&
4527 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4529 /* Is this a delegated open? */
4530 status
= nfs4_set_lock_state(state
, request
);
4533 request
->fl_flags
|= FL_ACCESS
;
4534 status
= do_vfs_lock(request
->fl_file
, request
);
4537 down_read(&nfsi
->rwsem
);
4538 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4539 /* Yes: cache locks! */
4540 /* ...but avoid races with delegation recall... */
4541 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4542 status
= do_vfs_lock(request
->fl_file
, request
);
4545 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4548 /* Note: we always want to sleep here! */
4549 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4550 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4551 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
4553 up_read(&nfsi
->rwsem
);
4555 request
->fl_flags
= fl_flags
;
4559 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4561 struct nfs4_exception exception
= {
4563 .inode
= state
->inode
,
4568 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4569 if (err
== -NFS4ERR_DENIED
)
4571 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4573 } while (exception
.retry
);
4578 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4580 struct nfs_open_context
*ctx
;
4581 struct nfs4_state
*state
;
4582 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4585 /* verify open state */
4586 ctx
= nfs_file_open_context(filp
);
4589 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4592 if (IS_GETLK(cmd
)) {
4594 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4598 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4601 if (request
->fl_type
== F_UNLCK
) {
4603 return nfs4_proc_unlck(state
, cmd
, request
);
4610 * Don't rely on the VFS having checked the file open mode,
4611 * since it won't do this for flock() locks.
4613 switch (request
->fl_type
& (F_RDLCK
|F_WRLCK
|F_UNLCK
)) {
4615 if (!(filp
->f_mode
& FMODE_READ
))
4619 if (!(filp
->f_mode
& FMODE_WRITE
))
4624 status
= nfs4_proc_setlk(state
, cmd
, request
);
4625 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4627 timeout
= nfs4_set_lock_task_retry(timeout
);
4628 status
= -ERESTARTSYS
;
4631 } while(status
< 0);
4635 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4637 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4638 struct nfs4_exception exception
= { };
4641 err
= nfs4_set_lock_state(state
, fl
);
4645 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4648 printk(KERN_ERR
"%s: unhandled error %d.\n",
4653 case -NFS4ERR_EXPIRED
:
4654 nfs4_schedule_stateid_recovery(server
, state
);
4655 case -NFS4ERR_STALE_CLIENTID
:
4656 case -NFS4ERR_STALE_STATEID
:
4657 nfs4_schedule_lease_recovery(server
->nfs_client
);
4659 case -NFS4ERR_BADSESSION
:
4660 case -NFS4ERR_BADSLOT
:
4661 case -NFS4ERR_BAD_HIGH_SLOT
:
4662 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4663 case -NFS4ERR_DEADSESSION
:
4664 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
4668 * The show must go on: exit, but mark the
4669 * stateid as needing recovery.
4671 case -NFS4ERR_DELEG_REVOKED
:
4672 case -NFS4ERR_ADMIN_REVOKED
:
4673 case -NFS4ERR_BAD_STATEID
:
4674 case -NFS4ERR_OPENMODE
:
4675 nfs4_schedule_stateid_recovery(server
, state
);
4680 * User RPCSEC_GSS context has expired.
4681 * We cannot recover this stateid now, so
4682 * skip it and allow recovery thread to
4688 case -NFS4ERR_DENIED
:
4689 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4692 case -NFS4ERR_DELAY
:
4695 err
= nfs4_handle_exception(server
, err
, &exception
);
4696 } while (exception
.retry
);
4701 static void nfs4_release_lockowner_release(void *calldata
)
4706 const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4707 .rpc_release
= nfs4_release_lockowner_release
,
4710 void nfs4_release_lockowner(const struct nfs4_lock_state
*lsp
)
4712 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4713 struct nfs_release_lockowner_args
*args
;
4714 struct rpc_message msg
= {
4715 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4718 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
4720 args
= kmalloc(sizeof(*args
), GFP_NOFS
);
4723 args
->lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4724 args
->lock_owner
.id
= lsp
->ls_id
.id
;
4725 args
->lock_owner
.s_dev
= server
->s_dev
;
4726 msg
.rpc_argp
= args
;
4727 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, args
);
4730 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4732 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
4733 const void *buf
, size_t buflen
,
4734 int flags
, int type
)
4736 if (strcmp(key
, "") != 0)
4739 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
4742 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
4743 void *buf
, size_t buflen
, int type
)
4745 if (strcmp(key
, "") != 0)
4748 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
4751 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
4752 size_t list_len
, const char *name
,
4753 size_t name_len
, int type
)
4755 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
4757 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4760 if (list
&& len
<= list_len
)
4761 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
4766 * nfs_fhget will use either the mounted_on_fileid or the fileid
4768 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4770 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
4771 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
4772 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4773 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4776 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4777 NFS_ATTR_FATTR_NLINK
;
4778 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4782 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4783 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4785 struct nfs_server
*server
= NFS_SERVER(dir
);
4787 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4789 struct nfs4_fs_locations_arg args
= {
4790 .dir_fh
= NFS_FH(dir
),
4795 struct nfs4_fs_locations_res res
= {
4796 .fs_locations
= fs_locations
,
4798 struct rpc_message msg
= {
4799 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4805 dprintk("%s: start\n", __func__
);
4807 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
4808 * is not supported */
4809 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
4810 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
4812 bitmask
[0] |= FATTR4_WORD0_FILEID
;
4814 nfs_fattr_init(&fs_locations
->fattr
);
4815 fs_locations
->server
= server
;
4816 fs_locations
->nlocations
= 0;
4817 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4818 dprintk("%s: returned status = %d\n", __func__
, status
);
4822 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4825 struct nfs4_secinfo_arg args
= {
4826 .dir_fh
= NFS_FH(dir
),
4829 struct nfs4_secinfo_res res
= {
4832 struct rpc_message msg
= {
4833 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
4838 dprintk("NFS call secinfo %s\n", name
->name
);
4839 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4840 dprintk("NFS reply secinfo: %d\n", status
);
4844 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4846 struct nfs4_exception exception
= { };
4849 err
= nfs4_handle_exception(NFS_SERVER(dir
),
4850 _nfs4_proc_secinfo(dir
, name
, flavors
),
4852 } while (exception
.retry
);
4856 #ifdef CONFIG_NFS_V4_1
4858 * Check the exchange flags returned by the server for invalid flags, having
4859 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
4862 static int nfs4_check_cl_exchange_flags(u32 flags
)
4864 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
4866 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
4867 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
4869 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
4873 return -NFS4ERR_INVAL
;
4877 nfs41_same_server_scope(struct server_scope
*a
, struct server_scope
*b
)
4879 if (a
->server_scope_sz
== b
->server_scope_sz
&&
4880 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
4887 * nfs4_proc_exchange_id()
4889 * Since the clientid has expired, all compounds using sessions
4890 * associated with the stale clientid will be returning
4891 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4892 * be in some phase of session reset.
4894 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4896 nfs4_verifier verifier
;
4897 struct nfs41_exchange_id_args args
= {
4899 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
4901 struct nfs41_exchange_id_res res
= {
4905 struct rpc_message msg
= {
4906 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4913 dprintk("--> %s\n", __func__
);
4914 BUG_ON(clp
== NULL
);
4916 p
= (u32
*)verifier
.data
;
4917 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4918 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4919 args
.verifier
= &verifier
;
4921 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4924 init_utsname()->nodename
,
4925 init_utsname()->domainname
,
4926 clp
->cl_rpcclient
->cl_auth
->au_flavor
);
4928 res
.server_scope
= kzalloc(sizeof(struct server_scope
), GFP_KERNEL
);
4929 if (unlikely(!res
.server_scope
)) {
4934 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4936 status
= nfs4_check_cl_exchange_flags(clp
->cl_exchange_flags
);
4939 if (clp
->server_scope
&&
4940 !nfs41_same_server_scope(clp
->server_scope
,
4941 res
.server_scope
)) {
4942 dprintk("%s: server_scope mismatch detected\n",
4944 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
4945 kfree(clp
->server_scope
);
4946 clp
->server_scope
= NULL
;
4949 if (!clp
->server_scope
) {
4950 clp
->server_scope
= res
.server_scope
;
4954 kfree(res
.server_scope
);
4956 dprintk("<-- %s status= %d\n", __func__
, status
);
4960 struct nfs4_get_lease_time_data
{
4961 struct nfs4_get_lease_time_args
*args
;
4962 struct nfs4_get_lease_time_res
*res
;
4963 struct nfs_client
*clp
;
4966 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4970 struct nfs4_get_lease_time_data
*data
=
4971 (struct nfs4_get_lease_time_data
*)calldata
;
4973 dprintk("--> %s\n", __func__
);
4974 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4975 /* just setup sequence, do not trigger session recovery
4976 since we're invoked within one */
4977 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4978 &data
->args
->la_seq_args
,
4979 &data
->res
->lr_seq_res
, 0, task
);
4981 BUG_ON(ret
== -EAGAIN
);
4982 rpc_call_start(task
);
4983 dprintk("<-- %s\n", __func__
);
4987 * Called from nfs4_state_manager thread for session setup, so don't recover
4988 * from sequence operation or clientid errors.
4990 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4992 struct nfs4_get_lease_time_data
*data
=
4993 (struct nfs4_get_lease_time_data
*)calldata
;
4995 dprintk("--> %s\n", __func__
);
4996 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
4998 switch (task
->tk_status
) {
4999 case -NFS4ERR_DELAY
:
5000 case -NFS4ERR_GRACE
:
5001 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5002 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5003 task
->tk_status
= 0;
5005 case -NFS4ERR_RETRY_UNCACHED_REP
:
5006 rpc_restart_call_prepare(task
);
5009 dprintk("<-- %s\n", __func__
);
5012 struct rpc_call_ops nfs4_get_lease_time_ops
= {
5013 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5014 .rpc_call_done
= nfs4_get_lease_time_done
,
5017 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5019 struct rpc_task
*task
;
5020 struct nfs4_get_lease_time_args args
;
5021 struct nfs4_get_lease_time_res res
= {
5022 .lr_fsinfo
= fsinfo
,
5024 struct nfs4_get_lease_time_data data
= {
5029 struct rpc_message msg
= {
5030 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5034 struct rpc_task_setup task_setup
= {
5035 .rpc_client
= clp
->cl_rpcclient
,
5036 .rpc_message
= &msg
,
5037 .callback_ops
= &nfs4_get_lease_time_ops
,
5038 .callback_data
= &data
,
5039 .flags
= RPC_TASK_TIMEOUT
,
5043 dprintk("--> %s\n", __func__
);
5044 task
= rpc_run_task(&task_setup
);
5047 status
= PTR_ERR(task
);
5049 status
= task
->tk_status
;
5052 dprintk("<-- %s return %d\n", __func__
, status
);
5057 static struct nfs4_slot
*nfs4_alloc_slots(u32 max_slots
, gfp_t gfp_flags
)
5059 return kcalloc(max_slots
, sizeof(struct nfs4_slot
), gfp_flags
);
5062 static void nfs4_add_and_init_slots(struct nfs4_slot_table
*tbl
,
5063 struct nfs4_slot
*new,
5067 struct nfs4_slot
*old
= NULL
;
5070 spin_lock(&tbl
->slot_tbl_lock
);
5074 tbl
->max_slots
= max_slots
;
5076 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
5077 for (i
= 0; i
< tbl
->max_slots
; i
++)
5078 tbl
->slots
[i
].seq_nr
= ivalue
;
5079 spin_unlock(&tbl
->slot_tbl_lock
);
5084 * (re)Initialise a slot table
5086 static int nfs4_realloc_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
5089 struct nfs4_slot
*new = NULL
;
5092 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
5093 max_reqs
, tbl
->max_slots
);
5095 /* Does the newly negotiated max_reqs match the existing slot table? */
5096 if (max_reqs
!= tbl
->max_slots
) {
5097 new = nfs4_alloc_slots(max_reqs
, GFP_NOFS
);
5103 nfs4_add_and_init_slots(tbl
, new, max_reqs
, ivalue
);
5104 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5105 tbl
, tbl
->slots
, tbl
->max_slots
);
5107 dprintk("<-- %s: return %d\n", __func__
, ret
);
5111 /* Destroy the slot table */
5112 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
5114 if (session
->fc_slot_table
.slots
!= NULL
) {
5115 kfree(session
->fc_slot_table
.slots
);
5116 session
->fc_slot_table
.slots
= NULL
;
5118 if (session
->bc_slot_table
.slots
!= NULL
) {
5119 kfree(session
->bc_slot_table
.slots
);
5120 session
->bc_slot_table
.slots
= NULL
;
5126 * Initialize or reset the forechannel and backchannel tables
5128 static int nfs4_setup_session_slot_tables(struct nfs4_session
*ses
)
5130 struct nfs4_slot_table
*tbl
;
5133 dprintk("--> %s\n", __func__
);
5135 tbl
= &ses
->fc_slot_table
;
5136 status
= nfs4_realloc_slot_table(tbl
, ses
->fc_attrs
.max_reqs
, 1);
5137 if (status
) /* -ENOMEM */
5140 tbl
= &ses
->bc_slot_table
;
5141 status
= nfs4_realloc_slot_table(tbl
, ses
->bc_attrs
.max_reqs
, 0);
5142 if (status
&& tbl
->slots
== NULL
)
5143 /* Fore and back channel share a connection so get
5144 * both slot tables or neither */
5145 nfs4_destroy_slot_tables(ses
);
5149 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5151 struct nfs4_session
*session
;
5152 struct nfs4_slot_table
*tbl
;
5154 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5158 tbl
= &session
->fc_slot_table
;
5159 tbl
->highest_used_slotid
= -1;
5160 spin_lock_init(&tbl
->slot_tbl_lock
);
5161 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5162 init_completion(&tbl
->complete
);
5164 tbl
= &session
->bc_slot_table
;
5165 tbl
->highest_used_slotid
= -1;
5166 spin_lock_init(&tbl
->slot_tbl_lock
);
5167 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5168 init_completion(&tbl
->complete
);
5170 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5176 void nfs4_destroy_session(struct nfs4_session
*session
)
5178 nfs4_proc_destroy_session(session
);
5179 dprintk("%s Destroy backchannel for xprt %p\n",
5180 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
5181 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
5182 NFS41_BC_MIN_CALLBACKS
);
5183 nfs4_destroy_slot_tables(session
);
5188 * Initialize the values to be used by the client in CREATE_SESSION
5189 * If nfs4_init_session set the fore channel request and response sizes,
5192 * Set the back channel max_resp_sz_cached to zero to force the client to
5193 * always set csa_cachethis to FALSE because the current implementation
5194 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5196 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5198 struct nfs4_session
*session
= args
->client
->cl_session
;
5199 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5200 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5203 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5205 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5206 /* Fore channel attributes */
5207 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5208 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5209 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5210 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
5212 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5213 "max_ops=%u max_reqs=%u\n",
5215 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5216 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5218 /* Back channel attributes */
5219 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5220 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5221 args
->bc_attrs
.max_resp_sz_cached
= 0;
5222 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5223 args
->bc_attrs
.max_reqs
= 1;
5225 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5226 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5228 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5229 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5230 args
->bc_attrs
.max_reqs
);
5233 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5235 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5236 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5238 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5241 * Our requested max_ops is the minimum we need; we're not
5242 * prepared to break up compounds into smaller pieces than that.
5243 * So, no point even trying to continue if the server won't
5246 if (rcvd
->max_ops
< sent
->max_ops
)
5248 if (rcvd
->max_reqs
== 0)
5253 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5255 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5256 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5258 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5260 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5262 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5264 /* These would render the backchannel useless: */
5265 if (rcvd
->max_ops
== 0)
5267 if (rcvd
->max_reqs
== 0)
5272 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5273 struct nfs4_session
*session
)
5277 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5280 return nfs4_verify_back_channel_attrs(args
, session
);
5283 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
5285 struct nfs4_session
*session
= clp
->cl_session
;
5286 struct nfs41_create_session_args args
= {
5288 .cb_program
= NFS4_CALLBACK
,
5290 struct nfs41_create_session_res res
= {
5293 struct rpc_message msg
= {
5294 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5300 nfs4_init_channel_attrs(&args
);
5301 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5303 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5306 /* Verify the session's negotiated channel_attrs values */
5307 status
= nfs4_verify_channel_attrs(&args
, session
);
5309 /* Increment the clientid slot sequence id */
5317 * Issues a CREATE_SESSION operation to the server.
5318 * It is the responsibility of the caller to verify the session is
5319 * expired before calling this routine.
5321 int nfs4_proc_create_session(struct nfs_client
*clp
)
5325 struct nfs4_session
*session
= clp
->cl_session
;
5327 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5329 status
= _nfs4_proc_create_session(clp
);
5333 /* Init or reset the session slot tables */
5334 status
= nfs4_setup_session_slot_tables(session
);
5335 dprintk("slot table setup returned %d\n", status
);
5339 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5340 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5341 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5343 dprintk("<-- %s\n", __func__
);
5348 * Issue the over-the-wire RPC DESTROY_SESSION.
5349 * The caller must serialize access to this routine.
5351 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
5354 struct rpc_message msg
;
5356 dprintk("--> nfs4_proc_destroy_session\n");
5358 /* session is still being setup */
5359 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5362 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
5363 msg
.rpc_argp
= session
;
5364 msg
.rpc_resp
= NULL
;
5365 msg
.rpc_cred
= NULL
;
5366 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5370 "Got error %d from the server on DESTROY_SESSION. "
5371 "Session has been destroyed regardless...\n", status
);
5373 dprintk("<-- nfs4_proc_destroy_session\n");
5377 int nfs4_init_session(struct nfs_server
*server
)
5379 struct nfs_client
*clp
= server
->nfs_client
;
5380 struct nfs4_session
*session
;
5381 unsigned int rsize
, wsize
;
5384 if (!nfs4_has_session(clp
))
5387 session
= clp
->cl_session
;
5388 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5391 rsize
= server
->rsize
;
5393 rsize
= NFS_MAX_FILE_IO_SIZE
;
5394 wsize
= server
->wsize
;
5396 wsize
= NFS_MAX_FILE_IO_SIZE
;
5398 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5399 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5401 ret
= nfs4_recover_expired_lease(server
);
5403 ret
= nfs4_check_client_ready(clp
);
5407 int nfs4_init_ds_session(struct nfs_client
*clp
)
5409 struct nfs4_session
*session
= clp
->cl_session
;
5412 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5415 ret
= nfs4_client_recover_expired_lease(clp
);
5417 /* Test for the DS role */
5418 if (!is_ds_client(clp
))
5421 ret
= nfs4_check_client_ready(clp
);
5425 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5429 * Renew the cl_session lease.
5431 struct nfs4_sequence_data
{
5432 struct nfs_client
*clp
;
5433 struct nfs4_sequence_args args
;
5434 struct nfs4_sequence_res res
;
5437 static void nfs41_sequence_release(void *data
)
5439 struct nfs4_sequence_data
*calldata
= data
;
5440 struct nfs_client
*clp
= calldata
->clp
;
5442 if (atomic_read(&clp
->cl_count
) > 1)
5443 nfs4_schedule_state_renewal(clp
);
5444 nfs_put_client(clp
);
5448 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5450 switch(task
->tk_status
) {
5451 case -NFS4ERR_DELAY
:
5452 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5455 nfs4_schedule_lease_recovery(clp
);
5460 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5462 struct nfs4_sequence_data
*calldata
= data
;
5463 struct nfs_client
*clp
= calldata
->clp
;
5465 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5468 if (task
->tk_status
< 0) {
5469 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5470 if (atomic_read(&clp
->cl_count
) == 1)
5473 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5474 rpc_restart_call_prepare(task
);
5478 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5480 dprintk("<-- %s\n", __func__
);
5483 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5485 struct nfs4_sequence_data
*calldata
= data
;
5486 struct nfs_client
*clp
= calldata
->clp
;
5487 struct nfs4_sequence_args
*args
;
5488 struct nfs4_sequence_res
*res
;
5490 args
= task
->tk_msg
.rpc_argp
;
5491 res
= task
->tk_msg
.rpc_resp
;
5493 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, 0, task
))
5495 rpc_call_start(task
);
5498 static const struct rpc_call_ops nfs41_sequence_ops
= {
5499 .rpc_call_done
= nfs41_sequence_call_done
,
5500 .rpc_call_prepare
= nfs41_sequence_prepare
,
5501 .rpc_release
= nfs41_sequence_release
,
5504 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5506 struct nfs4_sequence_data
*calldata
;
5507 struct rpc_message msg
= {
5508 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5511 struct rpc_task_setup task_setup_data
= {
5512 .rpc_client
= clp
->cl_rpcclient
,
5513 .rpc_message
= &msg
,
5514 .callback_ops
= &nfs41_sequence_ops
,
5515 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5518 if (!atomic_inc_not_zero(&clp
->cl_count
))
5519 return ERR_PTR(-EIO
);
5520 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5521 if (calldata
== NULL
) {
5522 nfs_put_client(clp
);
5523 return ERR_PTR(-ENOMEM
);
5525 msg
.rpc_argp
= &calldata
->args
;
5526 msg
.rpc_resp
= &calldata
->res
;
5527 calldata
->clp
= clp
;
5528 task_setup_data
.callback_data
= calldata
;
5530 return rpc_run_task(&task_setup_data
);
5533 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
5535 struct rpc_task
*task
;
5538 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
5540 task
= _nfs41_proc_sequence(clp
, cred
);
5542 ret
= PTR_ERR(task
);
5544 rpc_put_task_async(task
);
5545 dprintk("<-- %s status=%d\n", __func__
, ret
);
5549 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5551 struct rpc_task
*task
;
5554 task
= _nfs41_proc_sequence(clp
, cred
);
5556 ret
= PTR_ERR(task
);
5559 ret
= rpc_wait_for_completion_task(task
);
5561 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5563 if (task
->tk_status
== 0)
5564 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5565 ret
= task
->tk_status
;
5569 dprintk("<-- %s status=%d\n", __func__
, ret
);
5573 struct nfs4_reclaim_complete_data
{
5574 struct nfs_client
*clp
;
5575 struct nfs41_reclaim_complete_args arg
;
5576 struct nfs41_reclaim_complete_res res
;
5579 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5581 struct nfs4_reclaim_complete_data
*calldata
= data
;
5583 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5584 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5585 &calldata
->arg
.seq_args
,
5586 &calldata
->res
.seq_res
, 0, task
))
5589 rpc_call_start(task
);
5592 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5594 switch(task
->tk_status
) {
5596 case -NFS4ERR_COMPLETE_ALREADY
:
5597 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5599 case -NFS4ERR_DELAY
:
5600 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5602 case -NFS4ERR_RETRY_UNCACHED_REP
:
5605 nfs4_schedule_lease_recovery(clp
);
5610 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5612 struct nfs4_reclaim_complete_data
*calldata
= data
;
5613 struct nfs_client
*clp
= calldata
->clp
;
5614 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5616 dprintk("--> %s\n", __func__
);
5617 if (!nfs41_sequence_done(task
, res
))
5620 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5621 rpc_restart_call_prepare(task
);
5624 dprintk("<-- %s\n", __func__
);
5627 static void nfs4_free_reclaim_complete_data(void *data
)
5629 struct nfs4_reclaim_complete_data
*calldata
= data
;
5634 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5635 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5636 .rpc_call_done
= nfs4_reclaim_complete_done
,
5637 .rpc_release
= nfs4_free_reclaim_complete_data
,
5641 * Issue a global reclaim complete.
5643 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5645 struct nfs4_reclaim_complete_data
*calldata
;
5646 struct rpc_task
*task
;
5647 struct rpc_message msg
= {
5648 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5650 struct rpc_task_setup task_setup_data
= {
5651 .rpc_client
= clp
->cl_rpcclient
,
5652 .rpc_message
= &msg
,
5653 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5654 .flags
= RPC_TASK_ASYNC
,
5656 int status
= -ENOMEM
;
5658 dprintk("--> %s\n", __func__
);
5659 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5660 if (calldata
== NULL
)
5662 calldata
->clp
= clp
;
5663 calldata
->arg
.one_fs
= 0;
5665 msg
.rpc_argp
= &calldata
->arg
;
5666 msg
.rpc_resp
= &calldata
->res
;
5667 task_setup_data
.callback_data
= calldata
;
5668 task
= rpc_run_task(&task_setup_data
);
5670 status
= PTR_ERR(task
);
5673 status
= nfs4_wait_for_completion_rpc_task(task
);
5675 status
= task
->tk_status
;
5679 dprintk("<-- %s status=%d\n", __func__
, status
);
5684 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
5686 struct nfs4_layoutget
*lgp
= calldata
;
5687 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5689 dprintk("--> %s\n", __func__
);
5690 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
5691 * right now covering the LAYOUTGET we are about to send.
5692 * However, that is not so catastrophic, and there seems
5693 * to be no way to prevent it completely.
5695 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
5696 &lgp
->res
.seq_res
, 0, task
))
5698 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
5699 NFS_I(lgp
->args
.inode
)->layout
,
5700 lgp
->args
.ctx
->state
)) {
5701 rpc_exit(task
, NFS4_OK
);
5704 rpc_call_start(task
);
5707 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
5709 struct nfs4_layoutget
*lgp
= calldata
;
5710 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5712 dprintk("--> %s\n", __func__
);
5714 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
5717 switch (task
->tk_status
) {
5720 case -NFS4ERR_LAYOUTTRYLATER
:
5721 case -NFS4ERR_RECALLCONFLICT
:
5722 task
->tk_status
= -NFS4ERR_DELAY
;
5725 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5726 rpc_restart_call_prepare(task
);
5730 dprintk("<-- %s\n", __func__
);
5733 static void nfs4_layoutget_release(void *calldata
)
5735 struct nfs4_layoutget
*lgp
= calldata
;
5737 dprintk("--> %s\n", __func__
);
5738 put_nfs_open_context(lgp
->args
.ctx
);
5740 dprintk("<-- %s\n", __func__
);
5743 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
5744 .rpc_call_prepare
= nfs4_layoutget_prepare
,
5745 .rpc_call_done
= nfs4_layoutget_done
,
5746 .rpc_release
= nfs4_layoutget_release
,
5749 int nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
)
5751 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5752 struct rpc_task
*task
;
5753 struct rpc_message msg
= {
5754 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
5755 .rpc_argp
= &lgp
->args
,
5756 .rpc_resp
= &lgp
->res
,
5758 struct rpc_task_setup task_setup_data
= {
5759 .rpc_client
= server
->client
,
5760 .rpc_message
= &msg
,
5761 .callback_ops
= &nfs4_layoutget_call_ops
,
5762 .callback_data
= lgp
,
5763 .flags
= RPC_TASK_ASYNC
,
5767 dprintk("--> %s\n", __func__
);
5769 lgp
->res
.layoutp
= &lgp
->args
.layout
;
5770 lgp
->res
.seq_res
.sr_slot
= NULL
;
5771 task
= rpc_run_task(&task_setup_data
);
5773 return PTR_ERR(task
);
5774 status
= nfs4_wait_for_completion_rpc_task(task
);
5776 status
= task
->tk_status
;
5778 status
= pnfs_layout_process(lgp
);
5780 dprintk("<-- %s status=%d\n", __func__
, status
);
5785 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
5787 struct nfs4_layoutreturn
*lrp
= calldata
;
5789 dprintk("--> %s\n", __func__
);
5790 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
5791 &lrp
->res
.seq_res
, 0, task
))
5793 rpc_call_start(task
);
5796 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
5798 struct nfs4_layoutreturn
*lrp
= calldata
;
5799 struct nfs_server
*server
;
5800 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
5802 dprintk("--> %s\n", __func__
);
5804 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
5807 server
= NFS_SERVER(lrp
->args
.inode
);
5808 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5809 rpc_restart_call_prepare(task
);
5812 spin_lock(&lo
->plh_inode
->i_lock
);
5813 if (task
->tk_status
== 0) {
5814 if (lrp
->res
.lrs_present
) {
5815 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
5817 BUG_ON(!list_empty(&lo
->plh_segs
));
5819 lo
->plh_block_lgets
--;
5820 spin_unlock(&lo
->plh_inode
->i_lock
);
5821 dprintk("<-- %s\n", __func__
);
5824 static void nfs4_layoutreturn_release(void *calldata
)
5826 struct nfs4_layoutreturn
*lrp
= calldata
;
5828 dprintk("--> %s\n", __func__
);
5829 put_layout_hdr(lrp
->args
.layout
);
5831 dprintk("<-- %s\n", __func__
);
5834 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
5835 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
5836 .rpc_call_done
= nfs4_layoutreturn_done
,
5837 .rpc_release
= nfs4_layoutreturn_release
,
5840 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
5842 struct rpc_task
*task
;
5843 struct rpc_message msg
= {
5844 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
5845 .rpc_argp
= &lrp
->args
,
5846 .rpc_resp
= &lrp
->res
,
5848 struct rpc_task_setup task_setup_data
= {
5849 .rpc_client
= lrp
->clp
->cl_rpcclient
,
5850 .rpc_message
= &msg
,
5851 .callback_ops
= &nfs4_layoutreturn_call_ops
,
5852 .callback_data
= lrp
,
5856 dprintk("--> %s\n", __func__
);
5857 task
= rpc_run_task(&task_setup_data
);
5859 return PTR_ERR(task
);
5860 status
= task
->tk_status
;
5861 dprintk("<-- %s status=%d\n", __func__
, status
);
5867 * Retrieve the list of Data Server devices from the MDS.
5869 static int _nfs4_getdevicelist(struct nfs_server
*server
,
5870 const struct nfs_fh
*fh
,
5871 struct pnfs_devicelist
*devlist
)
5873 struct nfs4_getdevicelist_args args
= {
5875 .layoutclass
= server
->pnfs_curr_ld
->id
,
5877 struct nfs4_getdevicelist_res res
= {
5880 struct rpc_message msg
= {
5881 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
5887 dprintk("--> %s\n", __func__
);
5888 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
5890 dprintk("<-- %s status=%d\n", __func__
, status
);
5894 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
5895 const struct nfs_fh
*fh
,
5896 struct pnfs_devicelist
*devlist
)
5898 struct nfs4_exception exception
= { };
5902 err
= nfs4_handle_exception(server
,
5903 _nfs4_getdevicelist(server
, fh
, devlist
),
5905 } while (exception
.retry
);
5907 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
5908 err
, devlist
->num_devs
);
5912 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
5915 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5917 struct nfs4_getdeviceinfo_args args
= {
5920 struct nfs4_getdeviceinfo_res res
= {
5923 struct rpc_message msg
= {
5924 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
5930 dprintk("--> %s\n", __func__
);
5931 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5932 dprintk("<-- %s status=%d\n", __func__
, status
);
5937 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5939 struct nfs4_exception exception
= { };
5943 err
= nfs4_handle_exception(server
,
5944 _nfs4_proc_getdeviceinfo(server
, pdev
),
5946 } while (exception
.retry
);
5949 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
5951 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
5953 struct nfs4_layoutcommit_data
*data
= calldata
;
5954 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
5956 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
5957 &data
->res
.seq_res
, 1, task
))
5959 rpc_call_start(task
);
5963 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
5965 struct nfs4_layoutcommit_data
*data
= calldata
;
5966 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
5968 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5971 switch (task
->tk_status
) { /* Just ignore these failures */
5972 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
5973 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
5974 case -NFS4ERR_BADLAYOUT
: /* no layout */
5975 case -NFS4ERR_GRACE
: /* loca_recalim always false */
5976 task
->tk_status
= 0;
5979 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
5983 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5984 rpc_restart_call_prepare(task
);
5990 static void nfs4_layoutcommit_release(void *calldata
)
5992 struct nfs4_layoutcommit_data
*data
= calldata
;
5993 struct pnfs_layout_segment
*lseg
, *tmp
;
5994 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
5996 pnfs_cleanup_layoutcommit(data
);
5997 /* Matched by references in pnfs_set_layoutcommit */
5998 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
5999 list_del_init(&lseg
->pls_lc_list
);
6000 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
6005 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
6006 smp_mb__after_clear_bit();
6007 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
6009 put_rpccred(data
->cred
);
6013 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6014 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6015 .rpc_call_done
= nfs4_layoutcommit_done
,
6016 .rpc_release
= nfs4_layoutcommit_release
,
6020 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6022 struct rpc_message msg
= {
6023 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6024 .rpc_argp
= &data
->args
,
6025 .rpc_resp
= &data
->res
,
6026 .rpc_cred
= data
->cred
,
6028 struct rpc_task_setup task_setup_data
= {
6029 .task
= &data
->task
,
6030 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6031 .rpc_message
= &msg
,
6032 .callback_ops
= &nfs4_layoutcommit_ops
,
6033 .callback_data
= data
,
6034 .flags
= RPC_TASK_ASYNC
,
6036 struct rpc_task
*task
;
6039 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6040 "lbw: %llu inode %lu\n",
6041 data
->task
.tk_pid
, sync
,
6042 data
->args
.lastbytewritten
,
6043 data
->args
.inode
->i_ino
);
6045 task
= rpc_run_task(&task_setup_data
);
6047 return PTR_ERR(task
);
6050 status
= nfs4_wait_for_completion_rpc_task(task
);
6053 status
= task
->tk_status
;
6055 dprintk("%s: status %d\n", __func__
, status
);
6061 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6062 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6064 struct nfs41_secinfo_no_name_args args
= {
6065 .style
= SECINFO_STYLE_CURRENT_FH
,
6067 struct nfs4_secinfo_res res
= {
6070 struct rpc_message msg
= {
6071 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6075 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6079 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6080 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6082 struct nfs4_exception exception
= { };
6085 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6088 case -NFS4ERR_WRONGSEC
:
6089 case -NFS4ERR_NOTSUPP
:
6092 err
= nfs4_handle_exception(server
, err
, &exception
);
6094 } while (exception
.retry
);
6100 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6101 struct nfs_fsinfo
*info
)
6105 rpc_authflavor_t flavor
;
6106 struct nfs4_secinfo_flavors
*flavors
;
6108 page
= alloc_page(GFP_KERNEL
);
6114 flavors
= page_address(page
);
6115 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6118 * Fall back on "guess and check" method if
6119 * the server doesn't support SECINFO_NO_NAME
6121 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6122 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6128 flavor
= nfs_find_best_sec(flavors
);
6130 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6139 static int _nfs41_test_stateid(struct nfs_server
*server
, struct nfs4_state
*state
)
6142 struct nfs41_test_stateid_args args
= {
6143 .stateid
= &state
->stateid
,
6145 struct nfs41_test_stateid_res res
;
6146 struct rpc_message msg
= {
6147 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6151 args
.seq_args
.sa_session
= res
.seq_res
.sr_session
= NULL
;
6152 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0, 1);
6156 static int nfs41_test_stateid(struct nfs_server
*server
, struct nfs4_state
*state
)
6158 struct nfs4_exception exception
= { };
6161 err
= nfs4_handle_exception(server
,
6162 _nfs41_test_stateid(server
, state
),
6164 } while (exception
.retry
);
6168 static int _nfs4_free_stateid(struct nfs_server
*server
, struct nfs4_state
*state
)
6171 struct nfs41_free_stateid_args args
= {
6172 .stateid
= &state
->stateid
,
6174 struct nfs41_free_stateid_res res
;
6175 struct rpc_message msg
= {
6176 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6181 args
.seq_args
.sa_session
= res
.seq_res
.sr_session
= NULL
;
6182 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0, 1);
6186 static int nfs41_free_stateid(struct nfs_server
*server
, struct nfs4_state
*state
)
6188 struct nfs4_exception exception
= { };
6191 err
= nfs4_handle_exception(server
,
6192 _nfs4_free_stateid(server
, state
),
6194 } while (exception
.retry
);
6197 #endif /* CONFIG_NFS_V4_1 */
6199 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6200 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6201 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6202 .recover_open
= nfs4_open_reclaim
,
6203 .recover_lock
= nfs4_lock_reclaim
,
6204 .establish_clid
= nfs4_init_clientid
,
6205 .get_clid_cred
= nfs4_get_setclientid_cred
,
6208 #if defined(CONFIG_NFS_V4_1)
6209 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6210 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6211 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6212 .recover_open
= nfs4_open_reclaim
,
6213 .recover_lock
= nfs4_lock_reclaim
,
6214 .establish_clid
= nfs41_init_clientid
,
6215 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6216 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6218 #endif /* CONFIG_NFS_V4_1 */
6220 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6221 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6222 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6223 .recover_open
= nfs4_open_expired
,
6224 .recover_lock
= nfs4_lock_expired
,
6225 .establish_clid
= nfs4_init_clientid
,
6226 .get_clid_cred
= nfs4_get_setclientid_cred
,
6229 #if defined(CONFIG_NFS_V4_1)
6230 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6231 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6232 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6233 .recover_open
= nfs41_open_expired
,
6234 .recover_lock
= nfs41_lock_expired
,
6235 .establish_clid
= nfs41_init_clientid
,
6236 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6238 #endif /* CONFIG_NFS_V4_1 */
6240 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6241 .sched_state_renewal
= nfs4_proc_async_renew
,
6242 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6243 .renew_lease
= nfs4_proc_renew
,
6246 #if defined(CONFIG_NFS_V4_1)
6247 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6248 .sched_state_renewal
= nfs41_proc_async_sequence
,
6249 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6250 .renew_lease
= nfs4_proc_sequence
,
6254 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6256 .call_sync
= _nfs4_call_sync
,
6257 .validate_stateid
= nfs4_validate_delegation_stateid
,
6258 .find_root_sec
= nfs4_find_root_sec
,
6259 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6260 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6261 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6264 #if defined(CONFIG_NFS_V4_1)
6265 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6267 .call_sync
= _nfs4_call_sync_session
,
6268 .validate_stateid
= nfs41_validate_delegation_stateid
,
6269 .find_root_sec
= nfs41_find_root_sec
,
6270 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6271 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6272 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6276 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6277 [0] = &nfs_v4_0_minor_ops
,
6278 #if defined(CONFIG_NFS_V4_1)
6279 [1] = &nfs_v4_1_minor_ops
,
6283 static const struct inode_operations nfs4_file_inode_operations
= {
6284 .permission
= nfs_permission
,
6285 .getattr
= nfs_getattr
,
6286 .setattr
= nfs_setattr
,
6287 .getxattr
= generic_getxattr
,
6288 .setxattr
= generic_setxattr
,
6289 .listxattr
= generic_listxattr
,
6290 .removexattr
= generic_removexattr
,
6293 const struct nfs_rpc_ops nfs_v4_clientops
= {
6294 .version
= 4, /* protocol version */
6295 .dentry_ops
= &nfs4_dentry_operations
,
6296 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6297 .file_inode_ops
= &nfs4_file_inode_operations
,
6298 .file_ops
= &nfs4_file_operations
,
6299 .getroot
= nfs4_proc_get_root
,
6300 .getattr
= nfs4_proc_getattr
,
6301 .setattr
= nfs4_proc_setattr
,
6302 .lookup
= nfs4_proc_lookup
,
6303 .access
= nfs4_proc_access
,
6304 .readlink
= nfs4_proc_readlink
,
6305 .create
= nfs4_proc_create
,
6306 .remove
= nfs4_proc_remove
,
6307 .unlink_setup
= nfs4_proc_unlink_setup
,
6308 .unlink_done
= nfs4_proc_unlink_done
,
6309 .rename
= nfs4_proc_rename
,
6310 .rename_setup
= nfs4_proc_rename_setup
,
6311 .rename_done
= nfs4_proc_rename_done
,
6312 .link
= nfs4_proc_link
,
6313 .symlink
= nfs4_proc_symlink
,
6314 .mkdir
= nfs4_proc_mkdir
,
6315 .rmdir
= nfs4_proc_remove
,
6316 .readdir
= nfs4_proc_readdir
,
6317 .mknod
= nfs4_proc_mknod
,
6318 .statfs
= nfs4_proc_statfs
,
6319 .fsinfo
= nfs4_proc_fsinfo
,
6320 .pathconf
= nfs4_proc_pathconf
,
6321 .set_capabilities
= nfs4_server_capabilities
,
6322 .decode_dirent
= nfs4_decode_dirent
,
6323 .read_setup
= nfs4_proc_read_setup
,
6324 .read_done
= nfs4_read_done
,
6325 .write_setup
= nfs4_proc_write_setup
,
6326 .write_done
= nfs4_write_done
,
6327 .commit_setup
= nfs4_proc_commit_setup
,
6328 .commit_done
= nfs4_commit_done
,
6329 .lock
= nfs4_proc_lock
,
6330 .clear_acl_cache
= nfs4_zap_acl_attr
,
6331 .close_context
= nfs4_close_context
,
6332 .open_context
= nfs4_atomic_open
,
6333 .init_client
= nfs4_init_client
,
6334 .secinfo
= nfs4_proc_secinfo
,
6337 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6338 .prefix
= XATTR_NAME_NFSV4_ACL
,
6339 .list
= nfs4_xattr_list_nfs4_acl
,
6340 .get
= nfs4_xattr_get_nfs4_acl
,
6341 .set
= nfs4_xattr_set_nfs4_acl
,
6344 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6345 &nfs4_xattr_nfs4_acl_handler
,