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/slab.h>
43 #include <linux/sunrpc/clnt.h>
44 #include <linux/sunrpc/gss_api.h>
45 #include <linux/nfs.h>
46 #include <linux/nfs4.h>
47 #include <linux/nfs_fs.h>
48 #include <linux/nfs_page.h>
49 #include <linux/nfs_mount.h>
50 #include <linux/namei.h>
51 #include <linux/mount.h>
52 #include <linux/module.h>
53 #include <linux/sunrpc/bc_xprt.h>
54 #include <linux/xattr.h>
55 #include <linux/utsname.h>
58 #include "delegation.h"
64 #define NFSDBG_FACILITY NFSDBG_PROC
66 #define NFS4_POLL_RETRY_MIN (HZ/10)
67 #define NFS4_POLL_RETRY_MAX (15*HZ)
69 #define NFS4_MAX_LOOP_ON_RECOVER (10)
72 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
73 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
74 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
75 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
76 static int _nfs4_proc_lookup(struct rpc_clnt
*client
, struct inode
*dir
,
77 const struct qstr
*name
, struct nfs_fh
*fhandle
,
78 struct nfs_fattr
*fattr
);
79 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
80 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
81 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
82 struct nfs4_state
*state
);
84 /* Prevent leaks of NFSv4 errors into userland */
85 static int nfs4_map_errors(int err
)
90 case -NFS4ERR_RESOURCE
:
92 case -NFS4ERR_WRONGSEC
:
94 case -NFS4ERR_BADOWNER
:
95 case -NFS4ERR_BADNAME
:
98 dprintk("%s could not handle NFSv4 error %d\n",
106 * This is our standard bitmap for GETATTR requests.
108 const u32 nfs4_fattr_bitmap
[2] = {
110 | FATTR4_WORD0_CHANGE
113 | FATTR4_WORD0_FILEID
,
115 | FATTR4_WORD1_NUMLINKS
117 | FATTR4_WORD1_OWNER_GROUP
118 | FATTR4_WORD1_RAWDEV
119 | FATTR4_WORD1_SPACE_USED
120 | FATTR4_WORD1_TIME_ACCESS
121 | FATTR4_WORD1_TIME_METADATA
122 | FATTR4_WORD1_TIME_MODIFY
125 const u32 nfs4_statfs_bitmap
[2] = {
126 FATTR4_WORD0_FILES_AVAIL
127 | FATTR4_WORD0_FILES_FREE
128 | FATTR4_WORD0_FILES_TOTAL
,
129 FATTR4_WORD1_SPACE_AVAIL
130 | FATTR4_WORD1_SPACE_FREE
131 | FATTR4_WORD1_SPACE_TOTAL
134 const u32 nfs4_pathconf_bitmap
[2] = {
136 | FATTR4_WORD0_MAXNAME
,
140 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
141 | FATTR4_WORD0_MAXREAD
142 | FATTR4_WORD0_MAXWRITE
143 | FATTR4_WORD0_LEASE_TIME
,
144 FATTR4_WORD1_TIME_DELTA
145 | FATTR4_WORD1_FS_LAYOUT_TYPES
148 const u32 nfs4_fs_locations_bitmap
[2] = {
150 | FATTR4_WORD0_CHANGE
153 | FATTR4_WORD0_FILEID
154 | FATTR4_WORD0_FS_LOCATIONS
,
156 | FATTR4_WORD1_NUMLINKS
158 | FATTR4_WORD1_OWNER_GROUP
159 | FATTR4_WORD1_RAWDEV
160 | FATTR4_WORD1_SPACE_USED
161 | FATTR4_WORD1_TIME_ACCESS
162 | FATTR4_WORD1_TIME_METADATA
163 | FATTR4_WORD1_TIME_MODIFY
164 | FATTR4_WORD1_MOUNTED_ON_FILEID
167 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
168 struct nfs4_readdir_arg
*readdir
)
172 BUG_ON(readdir
->count
< 80);
174 readdir
->cookie
= cookie
;
175 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
180 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
185 * NFSv4 servers do not return entries for '.' and '..'
186 * Therefore, we fake these entries here. We let '.'
187 * have cookie 0 and '..' have cookie 1. Note that
188 * when talking to the server, we always send cookie 0
191 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
194 *p
++ = xdr_one
; /* next */
195 *p
++ = xdr_zero
; /* cookie, first word */
196 *p
++ = xdr_one
; /* cookie, second word */
197 *p
++ = xdr_one
; /* entry len */
198 memcpy(p
, ".\0\0\0", 4); /* entry */
200 *p
++ = xdr_one
; /* bitmap length */
201 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
202 *p
++ = htonl(8); /* attribute buffer length */
203 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
206 *p
++ = xdr_one
; /* next */
207 *p
++ = xdr_zero
; /* cookie, first word */
208 *p
++ = xdr_two
; /* cookie, second word */
209 *p
++ = xdr_two
; /* entry len */
210 memcpy(p
, "..\0\0", 4); /* entry */
212 *p
++ = xdr_one
; /* bitmap length */
213 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
214 *p
++ = htonl(8); /* attribute buffer length */
215 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
217 readdir
->pgbase
= (char *)p
- (char *)start
;
218 readdir
->count
-= readdir
->pgbase
;
219 kunmap_atomic(start
, KM_USER0
);
222 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
228 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
229 nfs_wait_bit_killable
, TASK_KILLABLE
);
233 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
240 *timeout
= NFS4_POLL_RETRY_MIN
;
241 if (*timeout
> NFS4_POLL_RETRY_MAX
)
242 *timeout
= NFS4_POLL_RETRY_MAX
;
243 schedule_timeout_killable(*timeout
);
244 if (fatal_signal_pending(current
))
250 /* This is the error handling routine for processes that are allowed
253 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
255 struct nfs_client
*clp
= server
->nfs_client
;
256 struct nfs4_state
*state
= exception
->state
;
259 exception
->retry
= 0;
263 case -NFS4ERR_ADMIN_REVOKED
:
264 case -NFS4ERR_BAD_STATEID
:
265 case -NFS4ERR_OPENMODE
:
268 nfs4_schedule_stateid_recovery(server
, state
);
269 goto wait_on_recovery
;
270 case -NFS4ERR_STALE_STATEID
:
271 case -NFS4ERR_STALE_CLIENTID
:
272 case -NFS4ERR_EXPIRED
:
273 nfs4_schedule_lease_recovery(clp
);
274 goto wait_on_recovery
;
275 #if defined(CONFIG_NFS_V4_1)
276 case -NFS4ERR_BADSESSION
:
277 case -NFS4ERR_BADSLOT
:
278 case -NFS4ERR_BAD_HIGH_SLOT
:
279 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
280 case -NFS4ERR_DEADSESSION
:
281 case -NFS4ERR_SEQ_FALSE_RETRY
:
282 case -NFS4ERR_SEQ_MISORDERED
:
283 dprintk("%s ERROR: %d Reset session\n", __func__
,
285 nfs4_schedule_session_recovery(clp
->cl_session
);
286 exception
->retry
= 1;
288 #endif /* defined(CONFIG_NFS_V4_1) */
289 case -NFS4ERR_FILE_OPEN
:
290 if (exception
->timeout
> HZ
) {
291 /* We have retried a decent amount, time to
300 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
303 case -NFS4ERR_OLD_STATEID
:
304 exception
->retry
= 1;
306 case -NFS4ERR_BADOWNER
:
307 /* The following works around a Linux server bug! */
308 case -NFS4ERR_BADNAME
:
309 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
310 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
311 exception
->retry
= 1;
312 printk(KERN_WARNING
"NFS: v4 server %s "
313 "does not accept raw "
315 "Reenabling the idmapper.\n",
316 server
->nfs_client
->cl_hostname
);
319 /* We failed to handle the error */
320 return nfs4_map_errors(ret
);
322 ret
= nfs4_wait_clnt_recover(clp
);
324 exception
->retry
= 1;
329 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
331 spin_lock(&clp
->cl_lock
);
332 if (time_before(clp
->cl_last_renewal
,timestamp
))
333 clp
->cl_last_renewal
= timestamp
;
334 spin_unlock(&clp
->cl_lock
);
337 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
339 do_renew_lease(server
->nfs_client
, timestamp
);
342 #if defined(CONFIG_NFS_V4_1)
345 * nfs4_free_slot - free a slot and efficiently update slot table.
347 * freeing a slot is trivially done by clearing its respective bit
349 * If the freed slotid equals highest_used_slotid we want to update it
350 * so that the server would be able to size down the slot table if needed,
351 * otherwise we know that the highest_used_slotid is still in use.
352 * When updating highest_used_slotid there may be "holes" in the bitmap
353 * so we need to scan down from highest_used_slotid to 0 looking for the now
354 * highest slotid in use.
355 * If none found, highest_used_slotid is set to -1.
357 * Must be called while holding tbl->slot_tbl_lock
360 nfs4_free_slot(struct nfs4_slot_table
*tbl
, struct nfs4_slot
*free_slot
)
362 int free_slotid
= free_slot
- tbl
->slots
;
363 int slotid
= free_slotid
;
365 BUG_ON(slotid
< 0 || slotid
>= NFS4_MAX_SLOT_TABLE
);
366 /* clear used bit in bitmap */
367 __clear_bit(slotid
, tbl
->used_slots
);
369 /* update highest_used_slotid when it is freed */
370 if (slotid
== tbl
->highest_used_slotid
) {
371 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
372 if (slotid
< tbl
->max_slots
)
373 tbl
->highest_used_slotid
= slotid
;
375 tbl
->highest_used_slotid
= -1;
377 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
378 free_slotid
, tbl
->highest_used_slotid
);
382 * Signal state manager thread if session fore channel is drained
384 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
386 struct rpc_task
*task
;
388 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
389 task
= rpc_wake_up_next(&ses
->fc_slot_table
.slot_tbl_waitq
);
391 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
395 if (ses
->fc_slot_table
.highest_used_slotid
!= -1)
398 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
399 complete(&ses
->fc_slot_table
.complete
);
403 * Signal state manager thread if session back channel is drained
405 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
407 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
408 ses
->bc_slot_table
.highest_used_slotid
!= -1)
410 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
411 complete(&ses
->bc_slot_table
.complete
);
414 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
416 struct nfs4_slot_table
*tbl
;
418 tbl
= &res
->sr_session
->fc_slot_table
;
420 /* just wake up the next guy waiting since
421 * we may have not consumed a slot after all */
422 dprintk("%s: No slot\n", __func__
);
426 spin_lock(&tbl
->slot_tbl_lock
);
427 nfs4_free_slot(tbl
, res
->sr_slot
);
428 nfs4_check_drain_fc_complete(res
->sr_session
);
429 spin_unlock(&tbl
->slot_tbl_lock
);
433 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
435 unsigned long timestamp
;
436 struct nfs_client
*clp
;
439 * sr_status remains 1 if an RPC level error occurred. The server
440 * may or may not have processed the sequence operation..
441 * Proceed as if the server received and processed the sequence
444 if (res
->sr_status
== 1)
445 res
->sr_status
= NFS_OK
;
447 /* don't increment the sequence number if the task wasn't sent */
448 if (!RPC_WAS_SENT(task
))
451 /* Check the SEQUENCE operation status */
452 switch (res
->sr_status
) {
454 /* Update the slot's sequence and clientid lease timer */
455 ++res
->sr_slot
->seq_nr
;
456 timestamp
= res
->sr_renewal_time
;
457 clp
= res
->sr_session
->clp
;
458 do_renew_lease(clp
, timestamp
);
459 /* Check sequence flags */
460 if (res
->sr_status_flags
!= 0)
461 nfs4_schedule_lease_recovery(clp
);
464 /* The server detected a resend of the RPC call and
465 * returned NFS4ERR_DELAY as per Section 2.10.6.2
468 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
470 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
471 res
->sr_slot
->seq_nr
);
474 /* Just update the slot sequence no. */
475 ++res
->sr_slot
->seq_nr
;
478 /* The session may be reset by one of the error handlers. */
479 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
480 nfs41_sequence_free_slot(res
);
483 if (!rpc_restart_call(task
))
485 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
489 static int nfs4_sequence_done(struct rpc_task
*task
,
490 struct nfs4_sequence_res
*res
)
492 if (res
->sr_session
== NULL
)
494 return nfs41_sequence_done(task
, res
);
498 * nfs4_find_slot - efficiently look for a free slot
500 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
501 * If found, we mark the slot as used, update the highest_used_slotid,
502 * and respectively set up the sequence operation args.
503 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
505 * Note: must be called with under the slot_tbl_lock.
508 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
511 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
512 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
514 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
515 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
517 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
518 if (slotid
>= tbl
->max_slots
)
520 __set_bit(slotid
, tbl
->used_slots
);
521 if (slotid
> tbl
->highest_used_slotid
)
522 tbl
->highest_used_slotid
= slotid
;
525 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
526 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
530 int nfs41_setup_sequence(struct nfs4_session
*session
,
531 struct nfs4_sequence_args
*args
,
532 struct nfs4_sequence_res
*res
,
534 struct rpc_task
*task
)
536 struct nfs4_slot
*slot
;
537 struct nfs4_slot_table
*tbl
;
540 dprintk("--> %s\n", __func__
);
541 /* slot already allocated? */
542 if (res
->sr_slot
!= NULL
)
545 tbl
= &session
->fc_slot_table
;
547 spin_lock(&tbl
->slot_tbl_lock
);
548 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
549 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
551 * The state manager will wait until the slot table is empty.
552 * Schedule the reset thread
554 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
555 spin_unlock(&tbl
->slot_tbl_lock
);
556 dprintk("%s Schedule Session Reset\n", __func__
);
560 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
561 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
562 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
563 spin_unlock(&tbl
->slot_tbl_lock
);
564 dprintk("%s enforce FIFO order\n", __func__
);
568 slotid
= nfs4_find_slot(tbl
);
569 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
570 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
571 spin_unlock(&tbl
->slot_tbl_lock
);
572 dprintk("<-- %s: no free slots\n", __func__
);
575 spin_unlock(&tbl
->slot_tbl_lock
);
577 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
578 slot
= tbl
->slots
+ slotid
;
579 args
->sa_session
= session
;
580 args
->sa_slotid
= slotid
;
581 args
->sa_cache_this
= cache_reply
;
583 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
585 res
->sr_session
= session
;
587 res
->sr_renewal_time
= jiffies
;
588 res
->sr_status_flags
= 0;
590 * sr_status is only set in decode_sequence, and so will remain
591 * set to 1 if an rpc level failure occurs.
596 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
598 int nfs4_setup_sequence(const struct nfs_server
*server
,
599 struct nfs4_sequence_args
*args
,
600 struct nfs4_sequence_res
*res
,
602 struct rpc_task
*task
)
604 struct nfs4_session
*session
= nfs4_get_session(server
);
607 if (session
== NULL
) {
608 args
->sa_session
= NULL
;
609 res
->sr_session
= NULL
;
613 dprintk("--> %s clp %p session %p sr_slot %td\n",
614 __func__
, session
->clp
, session
, res
->sr_slot
?
615 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
617 ret
= nfs41_setup_sequence(session
, args
, res
, cache_reply
,
620 dprintk("<-- %s status=%d\n", __func__
, ret
);
624 struct nfs41_call_sync_data
{
625 const struct nfs_server
*seq_server
;
626 struct nfs4_sequence_args
*seq_args
;
627 struct nfs4_sequence_res
*seq_res
;
631 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
633 struct nfs41_call_sync_data
*data
= calldata
;
635 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
637 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
638 data
->seq_res
, data
->cache_reply
, task
))
640 rpc_call_start(task
);
643 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
645 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
646 nfs41_call_sync_prepare(task
, calldata
);
649 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
651 struct nfs41_call_sync_data
*data
= calldata
;
653 nfs41_sequence_done(task
, data
->seq_res
);
656 struct rpc_call_ops nfs41_call_sync_ops
= {
657 .rpc_call_prepare
= nfs41_call_sync_prepare
,
658 .rpc_call_done
= nfs41_call_sync_done
,
661 struct rpc_call_ops nfs41_call_priv_sync_ops
= {
662 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
663 .rpc_call_done
= nfs41_call_sync_done
,
666 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
667 struct nfs_server
*server
,
668 struct rpc_message
*msg
,
669 struct nfs4_sequence_args
*args
,
670 struct nfs4_sequence_res
*res
,
675 struct rpc_task
*task
;
676 struct nfs41_call_sync_data data
= {
677 .seq_server
= server
,
680 .cache_reply
= cache_reply
,
682 struct rpc_task_setup task_setup
= {
685 .callback_ops
= &nfs41_call_sync_ops
,
686 .callback_data
= &data
691 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
692 task
= rpc_run_task(&task_setup
);
696 ret
= task
->tk_status
;
702 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
703 struct nfs_server
*server
,
704 struct rpc_message
*msg
,
705 struct nfs4_sequence_args
*args
,
706 struct nfs4_sequence_res
*res
,
709 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, cache_reply
, 0);
713 static int nfs4_sequence_done(struct rpc_task
*task
,
714 struct nfs4_sequence_res
*res
)
718 #endif /* CONFIG_NFS_V4_1 */
720 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
721 struct nfs_server
*server
,
722 struct rpc_message
*msg
,
723 struct nfs4_sequence_args
*args
,
724 struct nfs4_sequence_res
*res
,
727 args
->sa_session
= res
->sr_session
= NULL
;
728 return rpc_call_sync(clnt
, msg
, 0);
732 int nfs4_call_sync(struct rpc_clnt
*clnt
,
733 struct nfs_server
*server
,
734 struct rpc_message
*msg
,
735 struct nfs4_sequence_args
*args
,
736 struct nfs4_sequence_res
*res
,
739 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
740 args
, res
, cache_reply
);
743 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
745 struct nfs_inode
*nfsi
= NFS_I(dir
);
747 spin_lock(&dir
->i_lock
);
748 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
749 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
750 nfs_force_lookup_revalidate(dir
);
751 nfsi
->change_attr
= cinfo
->after
;
752 spin_unlock(&dir
->i_lock
);
755 struct nfs4_opendata
{
757 struct nfs_openargs o_arg
;
758 struct nfs_openres o_res
;
759 struct nfs_open_confirmargs c_arg
;
760 struct nfs_open_confirmres c_res
;
761 struct nfs_fattr f_attr
;
762 struct nfs_fattr dir_attr
;
765 struct nfs4_state_owner
*owner
;
766 struct nfs4_state
*state
;
768 unsigned long timestamp
;
769 unsigned int rpc_done
: 1;
775 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
777 p
->o_res
.f_attr
= &p
->f_attr
;
778 p
->o_res
.dir_attr
= &p
->dir_attr
;
779 p
->o_res
.seqid
= p
->o_arg
.seqid
;
780 p
->c_res
.seqid
= p
->c_arg
.seqid
;
781 p
->o_res
.server
= p
->o_arg
.server
;
782 nfs_fattr_init(&p
->f_attr
);
783 nfs_fattr_init(&p
->dir_attr
);
786 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
787 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
788 const struct iattr
*attrs
,
791 struct dentry
*parent
= dget_parent(path
->dentry
);
792 struct inode
*dir
= parent
->d_inode
;
793 struct nfs_server
*server
= NFS_SERVER(dir
);
794 struct nfs4_opendata
*p
;
796 p
= kzalloc(sizeof(*p
), gfp_mask
);
799 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
800 if (p
->o_arg
.seqid
== NULL
)
806 atomic_inc(&sp
->so_count
);
807 p
->o_arg
.fh
= NFS_FH(dir
);
808 p
->o_arg
.open_flags
= flags
;
809 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
810 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
811 p
->o_arg
.id
= sp
->so_owner_id
.id
;
812 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
813 p
->o_arg
.server
= server
;
814 p
->o_arg
.bitmask
= server
->attr_bitmask
;
815 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
816 if (flags
& O_CREAT
) {
819 p
->o_arg
.u
.attrs
= &p
->attrs
;
820 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
821 s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
825 p
->c_arg
.fh
= &p
->o_res
.fh
;
826 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
827 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
828 nfs4_init_opendata_res(p
);
838 static void nfs4_opendata_free(struct kref
*kref
)
840 struct nfs4_opendata
*p
= container_of(kref
,
841 struct nfs4_opendata
, kref
);
843 nfs_free_seqid(p
->o_arg
.seqid
);
844 if (p
->state
!= NULL
)
845 nfs4_put_open_state(p
->state
);
846 nfs4_put_state_owner(p
->owner
);
852 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
855 kref_put(&p
->kref
, nfs4_opendata_free
);
858 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
862 ret
= rpc_wait_for_completion_task(task
);
866 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
870 if (open_mode
& O_EXCL
)
872 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
874 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
875 && state
->n_rdonly
!= 0;
878 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
879 && state
->n_wronly
!= 0;
881 case FMODE_READ
|FMODE_WRITE
:
882 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
883 && state
->n_rdwr
!= 0;
889 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
891 if ((delegation
->type
& fmode
) != fmode
)
893 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
895 nfs_mark_delegation_referenced(delegation
);
899 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
908 case FMODE_READ
|FMODE_WRITE
:
911 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
914 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
916 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
917 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
918 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
921 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
924 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
926 case FMODE_READ
|FMODE_WRITE
:
927 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
931 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
933 write_seqlock(&state
->seqlock
);
934 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
935 write_sequnlock(&state
->seqlock
);
938 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
941 * Protect the call to nfs4_state_set_mode_locked and
942 * serialise the stateid update
944 write_seqlock(&state
->seqlock
);
945 if (deleg_stateid
!= NULL
) {
946 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
947 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
949 if (open_stateid
!= NULL
)
950 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
951 write_sequnlock(&state
->seqlock
);
952 spin_lock(&state
->owner
->so_lock
);
953 update_open_stateflags(state
, fmode
);
954 spin_unlock(&state
->owner
->so_lock
);
957 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
959 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
960 struct nfs_delegation
*deleg_cur
;
963 fmode
&= (FMODE_READ
|FMODE_WRITE
);
966 deleg_cur
= rcu_dereference(nfsi
->delegation
);
967 if (deleg_cur
== NULL
)
970 spin_lock(&deleg_cur
->lock
);
971 if (nfsi
->delegation
!= deleg_cur
||
972 (deleg_cur
->type
& fmode
) != fmode
)
973 goto no_delegation_unlock
;
975 if (delegation
== NULL
)
976 delegation
= &deleg_cur
->stateid
;
977 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
978 goto no_delegation_unlock
;
980 nfs_mark_delegation_referenced(deleg_cur
);
981 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
983 no_delegation_unlock
:
984 spin_unlock(&deleg_cur
->lock
);
988 if (!ret
&& open_stateid
!= NULL
) {
989 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
997 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
999 struct nfs_delegation
*delegation
;
1002 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1003 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1008 nfs_inode_return_delegation(inode
);
1011 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1013 struct nfs4_state
*state
= opendata
->state
;
1014 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1015 struct nfs_delegation
*delegation
;
1016 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
1017 fmode_t fmode
= opendata
->o_arg
.fmode
;
1018 nfs4_stateid stateid
;
1022 if (can_open_cached(state
, fmode
, open_mode
)) {
1023 spin_lock(&state
->owner
->so_lock
);
1024 if (can_open_cached(state
, fmode
, open_mode
)) {
1025 update_open_stateflags(state
, fmode
);
1026 spin_unlock(&state
->owner
->so_lock
);
1027 goto out_return_state
;
1029 spin_unlock(&state
->owner
->so_lock
);
1032 delegation
= rcu_dereference(nfsi
->delegation
);
1033 if (delegation
== NULL
||
1034 !can_open_delegated(delegation
, fmode
)) {
1038 /* Save the delegation */
1039 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
1041 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1046 /* Try to update the stateid using the delegation */
1047 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1048 goto out_return_state
;
1051 return ERR_PTR(ret
);
1053 atomic_inc(&state
->count
);
1057 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1059 struct inode
*inode
;
1060 struct nfs4_state
*state
= NULL
;
1061 struct nfs_delegation
*delegation
;
1064 if (!data
->rpc_done
) {
1065 state
= nfs4_try_open_cached(data
);
1070 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1072 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1073 ret
= PTR_ERR(inode
);
1077 state
= nfs4_get_open_state(inode
, data
->owner
);
1080 if (data
->o_res
.delegation_type
!= 0) {
1081 int delegation_flags
= 0;
1084 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1086 delegation_flags
= delegation
->flags
;
1088 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1089 nfs_inode_set_delegation(state
->inode
,
1090 data
->owner
->so_cred
,
1093 nfs_inode_reclaim_delegation(state
->inode
,
1094 data
->owner
->so_cred
,
1098 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1106 return ERR_PTR(ret
);
1109 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1111 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1112 struct nfs_open_context
*ctx
;
1114 spin_lock(&state
->inode
->i_lock
);
1115 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1116 if (ctx
->state
!= state
)
1118 get_nfs_open_context(ctx
);
1119 spin_unlock(&state
->inode
->i_lock
);
1122 spin_unlock(&state
->inode
->i_lock
);
1123 return ERR_PTR(-ENOENT
);
1126 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1128 struct nfs4_opendata
*opendata
;
1130 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1131 if (opendata
== NULL
)
1132 return ERR_PTR(-ENOMEM
);
1133 opendata
->state
= state
;
1134 atomic_inc(&state
->count
);
1138 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1140 struct nfs4_state
*newstate
;
1143 opendata
->o_arg
.open_flags
= 0;
1144 opendata
->o_arg
.fmode
= fmode
;
1145 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1146 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1147 nfs4_init_opendata_res(opendata
);
1148 ret
= _nfs4_recover_proc_open(opendata
);
1151 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1152 if (IS_ERR(newstate
))
1153 return PTR_ERR(newstate
);
1154 nfs4_close_state(&opendata
->path
, newstate
, fmode
);
1159 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1161 struct nfs4_state
*newstate
;
1164 /* memory barrier prior to reading state->n_* */
1165 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1167 if (state
->n_rdwr
!= 0) {
1168 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1169 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1172 if (newstate
!= state
)
1175 if (state
->n_wronly
!= 0) {
1176 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1177 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1180 if (newstate
!= state
)
1183 if (state
->n_rdonly
!= 0) {
1184 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1185 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1188 if (newstate
!= state
)
1192 * We may have performed cached opens for all three recoveries.
1193 * Check if we need to update the current stateid.
1195 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1196 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1197 write_seqlock(&state
->seqlock
);
1198 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1199 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1200 write_sequnlock(&state
->seqlock
);
1207 * reclaim state on the server after a reboot.
1209 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1211 struct nfs_delegation
*delegation
;
1212 struct nfs4_opendata
*opendata
;
1213 fmode_t delegation_type
= 0;
1216 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1217 if (IS_ERR(opendata
))
1218 return PTR_ERR(opendata
);
1219 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1220 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1222 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1223 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1224 delegation_type
= delegation
->type
;
1226 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1227 status
= nfs4_open_recover(opendata
, state
);
1228 nfs4_opendata_put(opendata
);
1232 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1234 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1235 struct nfs4_exception exception
= { };
1238 err
= _nfs4_do_open_reclaim(ctx
, state
);
1239 if (err
!= -NFS4ERR_DELAY
)
1241 nfs4_handle_exception(server
, err
, &exception
);
1242 } while (exception
.retry
);
1246 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1248 struct nfs_open_context
*ctx
;
1251 ctx
= nfs4_state_find_open_context(state
);
1253 return PTR_ERR(ctx
);
1254 ret
= nfs4_do_open_reclaim(ctx
, state
);
1255 put_nfs_open_context(ctx
);
1259 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1261 struct nfs4_opendata
*opendata
;
1264 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1265 if (IS_ERR(opendata
))
1266 return PTR_ERR(opendata
);
1267 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1268 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1269 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1270 ret
= nfs4_open_recover(opendata
, state
);
1271 nfs4_opendata_put(opendata
);
1275 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1277 struct nfs4_exception exception
= { };
1278 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1281 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1287 case -NFS4ERR_BADSESSION
:
1288 case -NFS4ERR_BADSLOT
:
1289 case -NFS4ERR_BAD_HIGH_SLOT
:
1290 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1291 case -NFS4ERR_DEADSESSION
:
1292 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
1294 case -NFS4ERR_STALE_CLIENTID
:
1295 case -NFS4ERR_STALE_STATEID
:
1296 case -NFS4ERR_EXPIRED
:
1297 /* Don't recall a delegation if it was lost */
1298 nfs4_schedule_lease_recovery(server
->nfs_client
);
1302 * The show must go on: exit, but mark the
1303 * stateid as needing recovery.
1305 case -NFS4ERR_ADMIN_REVOKED
:
1306 case -NFS4ERR_BAD_STATEID
:
1307 nfs4_schedule_stateid_recovery(server
, state
);
1310 * User RPCSEC_GSS context has expired.
1311 * We cannot recover this stateid now, so
1312 * skip it and allow recovery thread to
1319 err
= nfs4_handle_exception(server
, err
, &exception
);
1320 } while (exception
.retry
);
1325 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1327 struct nfs4_opendata
*data
= calldata
;
1329 data
->rpc_status
= task
->tk_status
;
1330 if (data
->rpc_status
== 0) {
1331 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1332 sizeof(data
->o_res
.stateid
.data
));
1333 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1334 renew_lease(data
->o_res
.server
, data
->timestamp
);
1339 static void nfs4_open_confirm_release(void *calldata
)
1341 struct nfs4_opendata
*data
= calldata
;
1342 struct nfs4_state
*state
= NULL
;
1344 /* If this request hasn't been cancelled, do nothing */
1345 if (data
->cancelled
== 0)
1347 /* In case of error, no cleanup! */
1348 if (!data
->rpc_done
)
1350 state
= nfs4_opendata_to_nfs4_state(data
);
1352 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1354 nfs4_opendata_put(data
);
1357 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1358 .rpc_call_done
= nfs4_open_confirm_done
,
1359 .rpc_release
= nfs4_open_confirm_release
,
1363 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1365 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1367 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1368 struct rpc_task
*task
;
1369 struct rpc_message msg
= {
1370 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1371 .rpc_argp
= &data
->c_arg
,
1372 .rpc_resp
= &data
->c_res
,
1373 .rpc_cred
= data
->owner
->so_cred
,
1375 struct rpc_task_setup task_setup_data
= {
1376 .rpc_client
= server
->client
,
1377 .rpc_message
= &msg
,
1378 .callback_ops
= &nfs4_open_confirm_ops
,
1379 .callback_data
= data
,
1380 .workqueue
= nfsiod_workqueue
,
1381 .flags
= RPC_TASK_ASYNC
,
1385 kref_get(&data
->kref
);
1387 data
->rpc_status
= 0;
1388 data
->timestamp
= jiffies
;
1389 task
= rpc_run_task(&task_setup_data
);
1391 return PTR_ERR(task
);
1392 status
= nfs4_wait_for_completion_rpc_task(task
);
1394 data
->cancelled
= 1;
1397 status
= data
->rpc_status
;
1402 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1404 struct nfs4_opendata
*data
= calldata
;
1405 struct nfs4_state_owner
*sp
= data
->owner
;
1407 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1410 * Check if we still need to send an OPEN call, or if we can use
1411 * a delegation instead.
1413 if (data
->state
!= NULL
) {
1414 struct nfs_delegation
*delegation
;
1416 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1419 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1420 if (delegation
!= NULL
&&
1421 test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) == 0) {
1427 /* Update sequence id. */
1428 data
->o_arg
.id
= sp
->so_owner_id
.id
;
1429 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1430 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1431 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1432 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1434 data
->timestamp
= jiffies
;
1435 if (nfs4_setup_sequence(data
->o_arg
.server
,
1436 &data
->o_arg
.seq_args
,
1437 &data
->o_res
.seq_res
, 1, task
))
1439 rpc_call_start(task
);
1442 task
->tk_action
= NULL
;
1446 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1448 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1449 nfs4_open_prepare(task
, calldata
);
1452 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1454 struct nfs4_opendata
*data
= calldata
;
1456 data
->rpc_status
= task
->tk_status
;
1458 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1461 if (task
->tk_status
== 0) {
1462 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1466 data
->rpc_status
= -ELOOP
;
1469 data
->rpc_status
= -EISDIR
;
1472 data
->rpc_status
= -ENOTDIR
;
1474 renew_lease(data
->o_res
.server
, data
->timestamp
);
1475 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1476 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1481 static void nfs4_open_release(void *calldata
)
1483 struct nfs4_opendata
*data
= calldata
;
1484 struct nfs4_state
*state
= NULL
;
1486 /* If this request hasn't been cancelled, do nothing */
1487 if (data
->cancelled
== 0)
1489 /* In case of error, no cleanup! */
1490 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1492 /* In case we need an open_confirm, no cleanup! */
1493 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1495 state
= nfs4_opendata_to_nfs4_state(data
);
1497 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1499 nfs4_opendata_put(data
);
1502 static const struct rpc_call_ops nfs4_open_ops
= {
1503 .rpc_call_prepare
= nfs4_open_prepare
,
1504 .rpc_call_done
= nfs4_open_done
,
1505 .rpc_release
= nfs4_open_release
,
1508 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1509 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1510 .rpc_call_done
= nfs4_open_done
,
1511 .rpc_release
= nfs4_open_release
,
1514 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1516 struct inode
*dir
= data
->dir
->d_inode
;
1517 struct nfs_server
*server
= NFS_SERVER(dir
);
1518 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1519 struct nfs_openres
*o_res
= &data
->o_res
;
1520 struct rpc_task
*task
;
1521 struct rpc_message msg
= {
1522 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1525 .rpc_cred
= data
->owner
->so_cred
,
1527 struct rpc_task_setup task_setup_data
= {
1528 .rpc_client
= server
->client
,
1529 .rpc_message
= &msg
,
1530 .callback_ops
= &nfs4_open_ops
,
1531 .callback_data
= data
,
1532 .workqueue
= nfsiod_workqueue
,
1533 .flags
= RPC_TASK_ASYNC
,
1537 kref_get(&data
->kref
);
1539 data
->rpc_status
= 0;
1540 data
->cancelled
= 0;
1542 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1543 task
= rpc_run_task(&task_setup_data
);
1545 return PTR_ERR(task
);
1546 status
= nfs4_wait_for_completion_rpc_task(task
);
1548 data
->cancelled
= 1;
1551 status
= data
->rpc_status
;
1557 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1559 struct inode
*dir
= data
->dir
->d_inode
;
1560 struct nfs_openres
*o_res
= &data
->o_res
;
1563 status
= nfs4_run_open_task(data
, 1);
1564 if (status
!= 0 || !data
->rpc_done
)
1567 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1569 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1570 status
= _nfs4_proc_open_confirm(data
);
1579 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1581 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1583 struct inode
*dir
= data
->dir
->d_inode
;
1584 struct nfs_server
*server
= NFS_SERVER(dir
);
1585 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1586 struct nfs_openres
*o_res
= &data
->o_res
;
1589 status
= nfs4_run_open_task(data
, 0);
1590 if (status
!= 0 || !data
->rpc_done
)
1593 if (o_arg
->open_flags
& O_CREAT
) {
1594 update_changeattr(dir
, &o_res
->cinfo
);
1595 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1597 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1598 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1599 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1600 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1601 status
= _nfs4_proc_open_confirm(data
);
1605 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1606 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1610 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1615 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1616 ret
= nfs4_wait_clnt_recover(clp
);
1619 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1620 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1622 nfs4_schedule_state_manager(clp
);
1628 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1630 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1635 * reclaim state on the server after a network partition.
1636 * Assumes caller holds the appropriate lock
1638 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1640 struct nfs4_opendata
*opendata
;
1643 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1644 if (IS_ERR(opendata
))
1645 return PTR_ERR(opendata
);
1646 ret
= nfs4_open_recover(opendata
, state
);
1648 d_drop(ctx
->path
.dentry
);
1649 nfs4_opendata_put(opendata
);
1653 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1655 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1656 struct nfs4_exception exception
= { };
1660 err
= _nfs4_open_expired(ctx
, state
);
1664 case -NFS4ERR_GRACE
:
1665 case -NFS4ERR_DELAY
:
1666 nfs4_handle_exception(server
, err
, &exception
);
1669 } while (exception
.retry
);
1674 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1676 struct nfs_open_context
*ctx
;
1679 ctx
= nfs4_state_find_open_context(state
);
1681 return PTR_ERR(ctx
);
1682 ret
= nfs4_do_open_expired(ctx
, state
);
1683 put_nfs_open_context(ctx
);
1688 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1689 * fields corresponding to attributes that were used to store the verifier.
1690 * Make sure we clobber those fields in the later setattr call
1692 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1694 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1695 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1696 sattr
->ia_valid
|= ATTR_ATIME
;
1698 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1699 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1700 sattr
->ia_valid
|= ATTR_MTIME
;
1704 * Returns a referenced nfs4_state
1706 static int _nfs4_do_open(struct inode
*dir
, struct path
*path
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
1708 struct nfs4_state_owner
*sp
;
1709 struct nfs4_state
*state
= NULL
;
1710 struct nfs_server
*server
= NFS_SERVER(dir
);
1711 struct nfs4_opendata
*opendata
;
1714 /* Protect against reboot recovery conflicts */
1716 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1717 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1720 status
= nfs4_recover_expired_lease(server
);
1722 goto err_put_state_owner
;
1723 if (path
->dentry
->d_inode
!= NULL
)
1724 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, fmode
);
1726 opendata
= nfs4_opendata_alloc(path
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1727 if (opendata
== NULL
)
1728 goto err_put_state_owner
;
1730 if (path
->dentry
->d_inode
!= NULL
)
1731 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1733 status
= _nfs4_proc_open(opendata
);
1735 goto err_opendata_put
;
1737 state
= nfs4_opendata_to_nfs4_state(opendata
);
1738 status
= PTR_ERR(state
);
1740 goto err_opendata_put
;
1741 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1742 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1744 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1745 nfs4_exclusive_attrset(opendata
, sattr
);
1747 nfs_fattr_init(opendata
->o_res
.f_attr
);
1748 status
= nfs4_do_setattr(state
->inode
, cred
,
1749 opendata
->o_res
.f_attr
, sattr
,
1752 nfs_setattr_update_inode(state
->inode
, sattr
);
1753 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1755 nfs4_opendata_put(opendata
);
1756 nfs4_put_state_owner(sp
);
1760 nfs4_opendata_put(opendata
);
1761 err_put_state_owner
:
1762 nfs4_put_state_owner(sp
);
1769 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct path
*path
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1771 struct nfs4_exception exception
= { };
1772 struct nfs4_state
*res
;
1776 status
= _nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
, &res
);
1779 /* NOTE: BAD_SEQID means the server and client disagree about the
1780 * book-keeping w.r.t. state-changing operations
1781 * (OPEN/CLOSE/LOCK/LOCKU...)
1782 * It is actually a sign of a bug on the client or on the server.
1784 * If we receive a BAD_SEQID error in the particular case of
1785 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1786 * have unhashed the old state_owner for us, and that we can
1787 * therefore safely retry using a new one. We should still warn
1788 * the user though...
1790 if (status
== -NFS4ERR_BAD_SEQID
) {
1791 printk(KERN_WARNING
"NFS: v4 server %s "
1792 " returned a bad sequence-id error!\n",
1793 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1794 exception
.retry
= 1;
1798 * BAD_STATEID on OPEN means that the server cancelled our
1799 * state before it received the OPEN_CONFIRM.
1800 * Recover by retrying the request as per the discussion
1801 * on Page 181 of RFC3530.
1803 if (status
== -NFS4ERR_BAD_STATEID
) {
1804 exception
.retry
= 1;
1807 if (status
== -EAGAIN
) {
1808 /* We must have found a delegation */
1809 exception
.retry
= 1;
1812 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1813 status
, &exception
));
1814 } while (exception
.retry
);
1818 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1819 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1820 struct nfs4_state
*state
)
1822 struct nfs_server
*server
= NFS_SERVER(inode
);
1823 struct nfs_setattrargs arg
= {
1824 .fh
= NFS_FH(inode
),
1827 .bitmask
= server
->attr_bitmask
,
1829 struct nfs_setattrres res
= {
1833 struct rpc_message msg
= {
1834 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1839 unsigned long timestamp
= jiffies
;
1842 nfs_fattr_init(fattr
);
1844 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1845 /* Use that stateid */
1846 } else if (state
!= NULL
) {
1847 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
, current
->tgid
);
1849 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1851 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
1852 if (status
== 0 && state
!= NULL
)
1853 renew_lease(server
, timestamp
);
1857 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1858 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1859 struct nfs4_state
*state
)
1861 struct nfs_server
*server
= NFS_SERVER(inode
);
1862 struct nfs4_exception exception
= { };
1865 err
= nfs4_handle_exception(server
,
1866 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1868 } while (exception
.retry
);
1872 struct nfs4_closedata
{
1874 struct inode
*inode
;
1875 struct nfs4_state
*state
;
1876 struct nfs_closeargs arg
;
1877 struct nfs_closeres res
;
1878 struct nfs_fattr fattr
;
1879 unsigned long timestamp
;
1884 static void nfs4_free_closedata(void *data
)
1886 struct nfs4_closedata
*calldata
= data
;
1887 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1890 pnfs_roc_release(calldata
->state
->inode
);
1891 nfs4_put_open_state(calldata
->state
);
1892 nfs_free_seqid(calldata
->arg
.seqid
);
1893 nfs4_put_state_owner(sp
);
1894 path_put(&calldata
->path
);
1898 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
1901 spin_lock(&state
->owner
->so_lock
);
1902 if (!(fmode
& FMODE_READ
))
1903 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1904 if (!(fmode
& FMODE_WRITE
))
1905 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1906 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1907 spin_unlock(&state
->owner
->so_lock
);
1910 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1912 struct nfs4_closedata
*calldata
= data
;
1913 struct nfs4_state
*state
= calldata
->state
;
1914 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1916 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
1918 /* hmm. we are done with the inode, and in the process of freeing
1919 * the state_owner. we keep this around to process errors
1921 switch (task
->tk_status
) {
1924 pnfs_roc_set_barrier(state
->inode
,
1925 calldata
->roc_barrier
);
1926 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1927 renew_lease(server
, calldata
->timestamp
);
1928 nfs4_close_clear_stateid_flags(state
,
1929 calldata
->arg
.fmode
);
1931 case -NFS4ERR_STALE_STATEID
:
1932 case -NFS4ERR_OLD_STATEID
:
1933 case -NFS4ERR_BAD_STATEID
:
1934 case -NFS4ERR_EXPIRED
:
1935 if (calldata
->arg
.fmode
== 0)
1938 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
1939 rpc_restart_call_prepare(task
);
1941 nfs_release_seqid(calldata
->arg
.seqid
);
1942 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1945 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1947 struct nfs4_closedata
*calldata
= data
;
1948 struct nfs4_state
*state
= calldata
->state
;
1951 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1954 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1955 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
1956 spin_lock(&state
->owner
->so_lock
);
1957 /* Calculate the change in open mode */
1958 if (state
->n_rdwr
== 0) {
1959 if (state
->n_rdonly
== 0) {
1960 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1961 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1962 calldata
->arg
.fmode
&= ~FMODE_READ
;
1964 if (state
->n_wronly
== 0) {
1965 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1966 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1967 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
1970 spin_unlock(&state
->owner
->so_lock
);
1973 /* Note: exit _without_ calling nfs4_close_done */
1974 task
->tk_action
= NULL
;
1978 if (calldata
->arg
.fmode
== 0) {
1979 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
1980 if (calldata
->roc
&&
1981 pnfs_roc_drain(calldata
->inode
, &calldata
->roc_barrier
)) {
1982 rpc_sleep_on(&NFS_SERVER(calldata
->inode
)->roc_rpcwaitq
,
1988 nfs_fattr_init(calldata
->res
.fattr
);
1989 calldata
->timestamp
= jiffies
;
1990 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
1991 &calldata
->arg
.seq_args
, &calldata
->res
.seq_res
,
1994 rpc_call_start(task
);
1997 static const struct rpc_call_ops nfs4_close_ops
= {
1998 .rpc_call_prepare
= nfs4_close_prepare
,
1999 .rpc_call_done
= nfs4_close_done
,
2000 .rpc_release
= nfs4_free_closedata
,
2004 * It is possible for data to be read/written from a mem-mapped file
2005 * after the sys_close call (which hits the vfs layer as a flush).
2006 * This means that we can't safely call nfsv4 close on a file until
2007 * the inode is cleared. This in turn means that we are not good
2008 * NFSv4 citizens - we do not indicate to the server to update the file's
2009 * share state even when we are done with one of the three share
2010 * stateid's in the inode.
2012 * NOTE: Caller must be holding the sp->so_owner semaphore!
2014 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
, bool roc
)
2016 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2017 struct nfs4_closedata
*calldata
;
2018 struct nfs4_state_owner
*sp
= state
->owner
;
2019 struct rpc_task
*task
;
2020 struct rpc_message msg
= {
2021 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2022 .rpc_cred
= state
->owner
->so_cred
,
2024 struct rpc_task_setup task_setup_data
= {
2025 .rpc_client
= server
->client
,
2026 .rpc_message
= &msg
,
2027 .callback_ops
= &nfs4_close_ops
,
2028 .workqueue
= nfsiod_workqueue
,
2029 .flags
= RPC_TASK_ASYNC
,
2031 int status
= -ENOMEM
;
2033 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2034 if (calldata
== NULL
)
2036 calldata
->inode
= state
->inode
;
2037 calldata
->state
= state
;
2038 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2039 calldata
->arg
.stateid
= &state
->open_stateid
;
2040 /* Serialization for the sequence id */
2041 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2042 if (calldata
->arg
.seqid
== NULL
)
2043 goto out_free_calldata
;
2044 calldata
->arg
.fmode
= 0;
2045 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2046 calldata
->res
.fattr
= &calldata
->fattr
;
2047 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2048 calldata
->res
.server
= server
;
2049 calldata
->roc
= roc
;
2051 calldata
->path
= *path
;
2053 msg
.rpc_argp
= &calldata
->arg
;
2054 msg
.rpc_resp
= &calldata
->res
;
2055 task_setup_data
.callback_data
= calldata
;
2056 task
= rpc_run_task(&task_setup_data
);
2058 return PTR_ERR(task
);
2061 status
= rpc_wait_for_completion_task(task
);
2068 pnfs_roc_release(state
->inode
);
2069 nfs4_put_open_state(state
);
2070 nfs4_put_state_owner(sp
);
2074 static struct inode
*
2075 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2077 struct nfs4_state
*state
;
2079 /* Protect against concurrent sillydeletes */
2080 state
= nfs4_do_open(dir
, &ctx
->path
, ctx
->mode
, open_flags
, attr
, ctx
->cred
);
2082 return ERR_CAST(state
);
2084 return igrab(state
->inode
);
2087 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2089 if (ctx
->state
== NULL
)
2092 nfs4_close_sync(&ctx
->path
, ctx
->state
, ctx
->mode
);
2094 nfs4_close_state(&ctx
->path
, ctx
->state
, ctx
->mode
);
2097 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2099 struct nfs4_server_caps_arg args
= {
2102 struct nfs4_server_caps_res res
= {};
2103 struct rpc_message msg
= {
2104 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2110 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2112 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2113 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2114 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2115 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2116 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2117 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2118 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2119 server
->caps
|= NFS_CAP_ACLS
;
2120 if (res
.has_links
!= 0)
2121 server
->caps
|= NFS_CAP_HARDLINKS
;
2122 if (res
.has_symlinks
!= 0)
2123 server
->caps
|= NFS_CAP_SYMLINKS
;
2124 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2125 server
->caps
|= NFS_CAP_FILEID
;
2126 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2127 server
->caps
|= NFS_CAP_MODE
;
2128 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2129 server
->caps
|= NFS_CAP_NLINK
;
2130 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2131 server
->caps
|= NFS_CAP_OWNER
;
2132 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2133 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2134 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2135 server
->caps
|= NFS_CAP_ATIME
;
2136 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2137 server
->caps
|= NFS_CAP_CTIME
;
2138 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2139 server
->caps
|= NFS_CAP_MTIME
;
2141 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2142 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2143 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2144 server
->acl_bitmask
= res
.acl_bitmask
;
2150 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2152 struct nfs4_exception exception
= { };
2155 err
= nfs4_handle_exception(server
,
2156 _nfs4_server_capabilities(server
, fhandle
),
2158 } while (exception
.retry
);
2162 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2163 struct nfs_fsinfo
*info
)
2165 struct nfs4_lookup_root_arg args
= {
2166 .bitmask
= nfs4_fattr_bitmap
,
2168 struct nfs4_lookup_res res
= {
2170 .fattr
= info
->fattr
,
2173 struct rpc_message msg
= {
2174 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2179 nfs_fattr_init(info
->fattr
);
2180 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2183 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2184 struct nfs_fsinfo
*info
)
2186 struct nfs4_exception exception
= { };
2189 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2192 case -NFS4ERR_WRONGSEC
:
2195 err
= nfs4_handle_exception(server
, err
, &exception
);
2197 } while (exception
.retry
);
2201 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2202 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2204 struct rpc_auth
*auth
;
2207 auth
= rpcauth_create(flavor
, server
->client
);
2212 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2217 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2218 struct nfs_fsinfo
*info
)
2220 int i
, len
, status
= 0;
2221 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2223 len
= gss_mech_list_pseudoflavors(&flav_array
[0]);
2224 flav_array
[len
] = RPC_AUTH_NULL
;
2227 for (i
= 0; i
< len
; i
++) {
2228 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2229 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2234 * -EACCESS could mean that the user doesn't have correct permissions
2235 * to access the mount. It could also mean that we tried to mount
2236 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2237 * existing mount programs don't handle -EACCES very well so it should
2238 * be mapped to -EPERM instead.
2240 if (status
== -EACCES
)
2246 * get the file handle for the "/" directory on the server
2248 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2249 struct nfs_fsinfo
*info
)
2251 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2252 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2254 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2255 * by nfs4_map_errors() as this function exits.
2257 status
= nfs4_find_root_sec(server
, fhandle
, info
);
2259 status
= nfs4_server_capabilities(server
, fhandle
);
2261 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2262 return nfs4_map_errors(status
);
2266 * Get locations and (maybe) other attributes of a referral.
2267 * Note that we'll actually follow the referral later when
2268 * we detect fsid mismatch in inode revalidation
2270 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2272 int status
= -ENOMEM
;
2273 struct page
*page
= NULL
;
2274 struct nfs4_fs_locations
*locations
= NULL
;
2276 page
= alloc_page(GFP_KERNEL
);
2279 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2280 if (locations
== NULL
)
2283 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2286 /* Make sure server returned a different fsid for the referral */
2287 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2288 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__
, name
->name
);
2293 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2294 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
2296 fattr
->mode
= S_IFDIR
;
2297 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2305 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2307 struct nfs4_getattr_arg args
= {
2309 .bitmask
= server
->attr_bitmask
,
2311 struct nfs4_getattr_res res
= {
2315 struct rpc_message msg
= {
2316 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2321 nfs_fattr_init(fattr
);
2322 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2325 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2327 struct nfs4_exception exception
= { };
2330 err
= nfs4_handle_exception(server
,
2331 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2333 } while (exception
.retry
);
2338 * The file is not closed if it is opened due to the a request to change
2339 * the size of the file. The open call will not be needed once the
2340 * VFS layer lookup-intents are implemented.
2342 * Close is called when the inode is destroyed.
2343 * If we haven't opened the file for O_WRONLY, we
2344 * need to in the size_change case to obtain a stateid.
2347 * Because OPEN is always done by name in nfsv4, it is
2348 * possible that we opened a different file by the same
2349 * name. We can recognize this race condition, but we
2350 * can't do anything about it besides returning an error.
2352 * This will be fixed with VFS changes (lookup-intent).
2355 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2356 struct iattr
*sattr
)
2358 struct inode
*inode
= dentry
->d_inode
;
2359 struct rpc_cred
*cred
= NULL
;
2360 struct nfs4_state
*state
= NULL
;
2363 nfs_fattr_init(fattr
);
2365 /* Search for an existing open(O_WRITE) file */
2366 if (sattr
->ia_valid
& ATTR_FILE
) {
2367 struct nfs_open_context
*ctx
;
2369 ctx
= nfs_file_open_context(sattr
->ia_file
);
2376 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2378 nfs_setattr_update_inode(inode
, sattr
);
2382 static int _nfs4_proc_lookupfh(struct rpc_clnt
*clnt
, struct nfs_server
*server
,
2383 const struct nfs_fh
*dirfh
, const struct qstr
*name
,
2384 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2387 struct nfs4_lookup_arg args
= {
2388 .bitmask
= server
->attr_bitmask
,
2392 struct nfs4_lookup_res res
= {
2397 struct rpc_message msg
= {
2398 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2403 nfs_fattr_init(fattr
);
2405 dprintk("NFS call lookupfh %s\n", name
->name
);
2406 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2407 dprintk("NFS reply lookupfh: %d\n", status
);
2411 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
2412 struct qstr
*name
, struct nfs_fh
*fhandle
,
2413 struct nfs_fattr
*fattr
)
2415 struct nfs4_exception exception
= { };
2418 err
= _nfs4_proc_lookupfh(server
->client
, server
, dirfh
, name
, fhandle
, fattr
);
2420 if (err
== -NFS4ERR_MOVED
) {
2424 err
= nfs4_handle_exception(server
, err
, &exception
);
2425 } while (exception
.retry
);
2429 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2430 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2431 struct nfs_fattr
*fattr
)
2435 dprintk("NFS call lookup %s\n", name
->name
);
2436 status
= _nfs4_proc_lookupfh(clnt
, NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
2437 if (status
== -NFS4ERR_MOVED
)
2438 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2439 dprintk("NFS reply lookup: %d\n", status
);
2443 void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
, struct nfs_fh
*fh
)
2445 memset(fh
, 0, sizeof(struct nfs_fh
));
2446 fattr
->fsid
.major
= 1;
2447 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2448 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_FSID
| NFS_ATTR_FATTR_MOUNTPOINT
;
2449 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2453 static int nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
, struct qstr
*name
,
2454 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2456 struct nfs4_exception exception
= { };
2459 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2460 _nfs4_proc_lookup(clnt
, dir
, name
, fhandle
, fattr
),
2463 nfs_fixup_secinfo_attributes(fattr
, fhandle
);
2464 } while (exception
.retry
);
2468 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2470 struct nfs_server
*server
= NFS_SERVER(inode
);
2471 struct nfs4_accessargs args
= {
2472 .fh
= NFS_FH(inode
),
2473 .bitmask
= server
->attr_bitmask
,
2475 struct nfs4_accessres res
= {
2478 struct rpc_message msg
= {
2479 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2482 .rpc_cred
= entry
->cred
,
2484 int mode
= entry
->mask
;
2488 * Determine which access bits we want to ask for...
2490 if (mode
& MAY_READ
)
2491 args
.access
|= NFS4_ACCESS_READ
;
2492 if (S_ISDIR(inode
->i_mode
)) {
2493 if (mode
& MAY_WRITE
)
2494 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2495 if (mode
& MAY_EXEC
)
2496 args
.access
|= NFS4_ACCESS_LOOKUP
;
2498 if (mode
& MAY_WRITE
)
2499 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2500 if (mode
& MAY_EXEC
)
2501 args
.access
|= NFS4_ACCESS_EXECUTE
;
2504 res
.fattr
= nfs_alloc_fattr();
2505 if (res
.fattr
== NULL
)
2508 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2511 if (res
.access
& NFS4_ACCESS_READ
)
2512 entry
->mask
|= MAY_READ
;
2513 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2514 entry
->mask
|= MAY_WRITE
;
2515 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2516 entry
->mask
|= MAY_EXEC
;
2517 nfs_refresh_inode(inode
, res
.fattr
);
2519 nfs_free_fattr(res
.fattr
);
2523 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2525 struct nfs4_exception exception
= { };
2528 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2529 _nfs4_proc_access(inode
, entry
),
2531 } while (exception
.retry
);
2536 * TODO: For the time being, we don't try to get any attributes
2537 * along with any of the zero-copy operations READ, READDIR,
2540 * In the case of the first three, we want to put the GETATTR
2541 * after the read-type operation -- this is because it is hard
2542 * to predict the length of a GETATTR response in v4, and thus
2543 * align the READ data correctly. This means that the GETATTR
2544 * may end up partially falling into the page cache, and we should
2545 * shift it into the 'tail' of the xdr_buf before processing.
2546 * To do this efficiently, we need to know the total length
2547 * of data received, which doesn't seem to be available outside
2550 * In the case of WRITE, we also want to put the GETATTR after
2551 * the operation -- in this case because we want to make sure
2552 * we get the post-operation mtime and size. This means that
2553 * we can't use xdr_encode_pages() as written: we need a variant
2554 * of it which would leave room in the 'tail' iovec.
2556 * Both of these changes to the XDR layer would in fact be quite
2557 * minor, but I decided to leave them for a subsequent patch.
2559 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2560 unsigned int pgbase
, unsigned int pglen
)
2562 struct nfs4_readlink args
= {
2563 .fh
= NFS_FH(inode
),
2568 struct nfs4_readlink_res res
;
2569 struct rpc_message msg
= {
2570 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2575 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2578 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2579 unsigned int pgbase
, unsigned int pglen
)
2581 struct nfs4_exception exception
= { };
2584 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2585 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2587 } while (exception
.retry
);
2593 * We will need to arrange for the VFS layer to provide an atomic open.
2594 * Until then, this create/open method is prone to inefficiency and race
2595 * conditions due to the lookup, create, and open VFS calls from sys_open()
2596 * placed on the wire.
2598 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2599 * The file will be opened again in the subsequent VFS open call
2600 * (nfs4_proc_file_open).
2602 * The open for read will just hang around to be used by any process that
2603 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2607 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2608 int flags
, struct nfs_open_context
*ctx
)
2610 struct path my_path
= {
2613 struct path
*path
= &my_path
;
2614 struct nfs4_state
*state
;
2615 struct rpc_cred
*cred
= NULL
;
2624 sattr
->ia_mode
&= ~current_umask();
2625 state
= nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
);
2627 if (IS_ERR(state
)) {
2628 status
= PTR_ERR(state
);
2631 d_add(dentry
, igrab(state
->inode
));
2632 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2636 nfs4_close_sync(path
, state
, fmode
);
2641 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2643 struct nfs_server
*server
= NFS_SERVER(dir
);
2644 struct nfs_removeargs args
= {
2646 .name
.len
= name
->len
,
2647 .name
.name
= name
->name
,
2648 .bitmask
= server
->attr_bitmask
,
2650 struct nfs_removeres res
= {
2653 struct rpc_message msg
= {
2654 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2658 int status
= -ENOMEM
;
2660 res
.dir_attr
= nfs_alloc_fattr();
2661 if (res
.dir_attr
== NULL
)
2664 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2666 update_changeattr(dir
, &res
.cinfo
);
2667 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2669 nfs_free_fattr(res
.dir_attr
);
2674 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2676 struct nfs4_exception exception
= { };
2679 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2680 _nfs4_proc_remove(dir
, name
),
2682 } while (exception
.retry
);
2686 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2688 struct nfs_server
*server
= NFS_SERVER(dir
);
2689 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2690 struct nfs_removeres
*res
= msg
->rpc_resp
;
2692 args
->bitmask
= server
->cache_consistency_bitmask
;
2693 res
->server
= server
;
2694 res
->seq_res
.sr_slot
= NULL
;
2695 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2698 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2700 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2702 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2704 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2706 update_changeattr(dir
, &res
->cinfo
);
2707 nfs_post_op_update_inode(dir
, res
->dir_attr
);
2711 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2713 struct nfs_server
*server
= NFS_SERVER(dir
);
2714 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2715 struct nfs_renameres
*res
= msg
->rpc_resp
;
2717 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2718 arg
->bitmask
= server
->attr_bitmask
;
2719 res
->server
= server
;
2722 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2723 struct inode
*new_dir
)
2725 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2727 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2729 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2732 update_changeattr(old_dir
, &res
->old_cinfo
);
2733 nfs_post_op_update_inode(old_dir
, res
->old_fattr
);
2734 update_changeattr(new_dir
, &res
->new_cinfo
);
2735 nfs_post_op_update_inode(new_dir
, res
->new_fattr
);
2739 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2740 struct inode
*new_dir
, struct qstr
*new_name
)
2742 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2743 struct nfs_renameargs arg
= {
2744 .old_dir
= NFS_FH(old_dir
),
2745 .new_dir
= NFS_FH(new_dir
),
2746 .old_name
= old_name
,
2747 .new_name
= new_name
,
2748 .bitmask
= server
->attr_bitmask
,
2750 struct nfs_renameres res
= {
2753 struct rpc_message msg
= {
2754 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2758 int status
= -ENOMEM
;
2760 res
.old_fattr
= nfs_alloc_fattr();
2761 res
.new_fattr
= nfs_alloc_fattr();
2762 if (res
.old_fattr
== NULL
|| res
.new_fattr
== NULL
)
2765 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2767 update_changeattr(old_dir
, &res
.old_cinfo
);
2768 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2769 update_changeattr(new_dir
, &res
.new_cinfo
);
2770 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2773 nfs_free_fattr(res
.new_fattr
);
2774 nfs_free_fattr(res
.old_fattr
);
2778 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2779 struct inode
*new_dir
, struct qstr
*new_name
)
2781 struct nfs4_exception exception
= { };
2784 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2785 _nfs4_proc_rename(old_dir
, old_name
,
2788 } while (exception
.retry
);
2792 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2794 struct nfs_server
*server
= NFS_SERVER(inode
);
2795 struct nfs4_link_arg arg
= {
2796 .fh
= NFS_FH(inode
),
2797 .dir_fh
= NFS_FH(dir
),
2799 .bitmask
= server
->attr_bitmask
,
2801 struct nfs4_link_res res
= {
2804 struct rpc_message msg
= {
2805 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2809 int status
= -ENOMEM
;
2811 res
.fattr
= nfs_alloc_fattr();
2812 res
.dir_attr
= nfs_alloc_fattr();
2813 if (res
.fattr
== NULL
|| res
.dir_attr
== NULL
)
2816 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2818 update_changeattr(dir
, &res
.cinfo
);
2819 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2820 nfs_post_op_update_inode(inode
, res
.fattr
);
2823 nfs_free_fattr(res
.dir_attr
);
2824 nfs_free_fattr(res
.fattr
);
2828 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2830 struct nfs4_exception exception
= { };
2833 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2834 _nfs4_proc_link(inode
, dir
, name
),
2836 } while (exception
.retry
);
2840 struct nfs4_createdata
{
2841 struct rpc_message msg
;
2842 struct nfs4_create_arg arg
;
2843 struct nfs4_create_res res
;
2845 struct nfs_fattr fattr
;
2846 struct nfs_fattr dir_fattr
;
2849 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2850 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2852 struct nfs4_createdata
*data
;
2854 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2856 struct nfs_server
*server
= NFS_SERVER(dir
);
2858 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2859 data
->msg
.rpc_argp
= &data
->arg
;
2860 data
->msg
.rpc_resp
= &data
->res
;
2861 data
->arg
.dir_fh
= NFS_FH(dir
);
2862 data
->arg
.server
= server
;
2863 data
->arg
.name
= name
;
2864 data
->arg
.attrs
= sattr
;
2865 data
->arg
.ftype
= ftype
;
2866 data
->arg
.bitmask
= server
->attr_bitmask
;
2867 data
->res
.server
= server
;
2868 data
->res
.fh
= &data
->fh
;
2869 data
->res
.fattr
= &data
->fattr
;
2870 data
->res
.dir_fattr
= &data
->dir_fattr
;
2871 nfs_fattr_init(data
->res
.fattr
);
2872 nfs_fattr_init(data
->res
.dir_fattr
);
2877 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2879 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
2880 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
2882 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2883 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2884 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2889 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2894 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2895 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2897 struct nfs4_createdata
*data
;
2898 int status
= -ENAMETOOLONG
;
2900 if (len
> NFS4_MAXPATHLEN
)
2904 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2908 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2909 data
->arg
.u
.symlink
.pages
= &page
;
2910 data
->arg
.u
.symlink
.len
= len
;
2912 status
= nfs4_do_create(dir
, dentry
, data
);
2914 nfs4_free_createdata(data
);
2919 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2920 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2922 struct nfs4_exception exception
= { };
2925 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2926 _nfs4_proc_symlink(dir
, dentry
, page
,
2929 } while (exception
.retry
);
2933 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2934 struct iattr
*sattr
)
2936 struct nfs4_createdata
*data
;
2937 int status
= -ENOMEM
;
2939 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2943 status
= nfs4_do_create(dir
, dentry
, data
);
2945 nfs4_free_createdata(data
);
2950 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2951 struct iattr
*sattr
)
2953 struct nfs4_exception exception
= { };
2956 sattr
->ia_mode
&= ~current_umask();
2958 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2959 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2961 } while (exception
.retry
);
2965 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2966 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
2968 struct inode
*dir
= dentry
->d_inode
;
2969 struct nfs4_readdir_arg args
= {
2974 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2977 struct nfs4_readdir_res res
;
2978 struct rpc_message msg
= {
2979 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2986 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
2987 dentry
->d_parent
->d_name
.name
,
2988 dentry
->d_name
.name
,
2989 (unsigned long long)cookie
);
2990 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2991 res
.pgbase
= args
.pgbase
;
2992 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2994 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2995 status
+= args
.pgbase
;
2998 nfs_invalidate_atime(dir
);
3000 dprintk("%s: returns %d\n", __func__
, status
);
3004 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3005 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3007 struct nfs4_exception exception
= { };
3010 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3011 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3012 pages
, count
, plus
),
3014 } while (exception
.retry
);
3018 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3019 struct iattr
*sattr
, dev_t rdev
)
3021 struct nfs4_createdata
*data
;
3022 int mode
= sattr
->ia_mode
;
3023 int status
= -ENOMEM
;
3025 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
3026 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
3028 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3033 data
->arg
.ftype
= NF4FIFO
;
3034 else if (S_ISBLK(mode
)) {
3035 data
->arg
.ftype
= NF4BLK
;
3036 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3037 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3039 else if (S_ISCHR(mode
)) {
3040 data
->arg
.ftype
= NF4CHR
;
3041 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3042 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3045 status
= nfs4_do_create(dir
, dentry
, data
);
3047 nfs4_free_createdata(data
);
3052 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3053 struct iattr
*sattr
, dev_t rdev
)
3055 struct nfs4_exception exception
= { };
3058 sattr
->ia_mode
&= ~current_umask();
3060 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3061 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3063 } while (exception
.retry
);
3067 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3068 struct nfs_fsstat
*fsstat
)
3070 struct nfs4_statfs_arg args
= {
3072 .bitmask
= server
->attr_bitmask
,
3074 struct nfs4_statfs_res res
= {
3077 struct rpc_message msg
= {
3078 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3083 nfs_fattr_init(fsstat
->fattr
);
3084 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3087 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3089 struct nfs4_exception exception
= { };
3092 err
= nfs4_handle_exception(server
,
3093 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3095 } while (exception
.retry
);
3099 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3100 struct nfs_fsinfo
*fsinfo
)
3102 struct nfs4_fsinfo_arg args
= {
3104 .bitmask
= server
->attr_bitmask
,
3106 struct nfs4_fsinfo_res res
= {
3109 struct rpc_message msg
= {
3110 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3115 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3118 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3120 struct nfs4_exception exception
= { };
3124 err
= nfs4_handle_exception(server
,
3125 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3127 } while (exception
.retry
);
3131 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3133 nfs_fattr_init(fsinfo
->fattr
);
3134 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3137 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3138 struct nfs_pathconf
*pathconf
)
3140 struct nfs4_pathconf_arg args
= {
3142 .bitmask
= server
->attr_bitmask
,
3144 struct nfs4_pathconf_res res
= {
3145 .pathconf
= pathconf
,
3147 struct rpc_message msg
= {
3148 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3153 /* None of the pathconf attributes are mandatory to implement */
3154 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3155 memset(pathconf
, 0, sizeof(*pathconf
));
3159 nfs_fattr_init(pathconf
->fattr
);
3160 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3163 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3164 struct nfs_pathconf
*pathconf
)
3166 struct nfs4_exception exception
= { };
3170 err
= nfs4_handle_exception(server
,
3171 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3173 } while (exception
.retry
);
3177 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3179 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3181 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3182 nfs_restart_rpc(task
, server
->nfs_client
);
3186 nfs_invalidate_atime(data
->inode
);
3187 if (task
->tk_status
> 0)
3188 renew_lease(server
, data
->timestamp
);
3192 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3195 dprintk("--> %s\n", __func__
);
3197 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3200 return data
->read_done_cb(task
, data
);
3203 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3205 data
->timestamp
= jiffies
;
3206 data
->read_done_cb
= nfs4_read_done_cb
;
3207 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3210 /* Reset the the nfs_read_data to send the read to the MDS. */
3211 void nfs4_reset_read(struct rpc_task
*task
, struct nfs_read_data
*data
)
3213 dprintk("%s Reset task for i/o through\n", __func__
);
3214 put_lseg(data
->lseg
);
3216 /* offsets will differ in the dense stripe case */
3217 data
->args
.offset
= data
->mds_offset
;
3218 data
->ds_clp
= NULL
;
3219 data
->args
.fh
= NFS_FH(data
->inode
);
3220 data
->read_done_cb
= nfs4_read_done_cb
;
3221 task
->tk_ops
= data
->mds_ops
;
3222 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3224 EXPORT_SYMBOL_GPL(nfs4_reset_read
);
3226 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3228 struct inode
*inode
= data
->inode
;
3230 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3231 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3234 if (task
->tk_status
>= 0) {
3235 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3236 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3241 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3243 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3245 return data
->write_done_cb(task
, data
);
3248 /* Reset the the nfs_write_data to send the write to the MDS. */
3249 void nfs4_reset_write(struct rpc_task
*task
, struct nfs_write_data
*data
)
3251 dprintk("%s Reset task for i/o through\n", __func__
);
3252 put_lseg(data
->lseg
);
3254 data
->ds_clp
= NULL
;
3255 data
->write_done_cb
= nfs4_write_done_cb
;
3256 data
->args
.fh
= NFS_FH(data
->inode
);
3257 data
->args
.bitmask
= data
->res
.server
->cache_consistency_bitmask
;
3258 data
->args
.offset
= data
->mds_offset
;
3259 data
->res
.fattr
= &data
->fattr
;
3260 task
->tk_ops
= data
->mds_ops
;
3261 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3263 EXPORT_SYMBOL_GPL(nfs4_reset_write
);
3265 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3267 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3270 data
->args
.bitmask
= NULL
;
3271 data
->res
.fattr
= NULL
;
3273 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3274 if (!data
->write_done_cb
)
3275 data
->write_done_cb
= nfs4_write_done_cb
;
3276 data
->res
.server
= server
;
3277 data
->timestamp
= jiffies
;
3279 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3282 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3284 struct inode
*inode
= data
->inode
;
3286 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3287 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3290 nfs_refresh_inode(inode
, data
->res
.fattr
);
3294 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3296 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3298 return data
->write_done_cb(task
, data
);
3301 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3303 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3306 data
->args
.bitmask
= NULL
;
3307 data
->res
.fattr
= NULL
;
3309 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3310 if (!data
->write_done_cb
)
3311 data
->write_done_cb
= nfs4_commit_done_cb
;
3312 data
->res
.server
= server
;
3313 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3316 struct nfs4_renewdata
{
3317 struct nfs_client
*client
;
3318 unsigned long timestamp
;
3322 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3323 * standalone procedure for queueing an asynchronous RENEW.
3325 static void nfs4_renew_release(void *calldata
)
3327 struct nfs4_renewdata
*data
= calldata
;
3328 struct nfs_client
*clp
= data
->client
;
3330 if (atomic_read(&clp
->cl_count
) > 1)
3331 nfs4_schedule_state_renewal(clp
);
3332 nfs_put_client(clp
);
3336 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3338 struct nfs4_renewdata
*data
= calldata
;
3339 struct nfs_client
*clp
= data
->client
;
3340 unsigned long timestamp
= data
->timestamp
;
3342 if (task
->tk_status
< 0) {
3343 /* Unless we're shutting down, schedule state recovery! */
3344 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) != 0)
3345 nfs4_schedule_lease_recovery(clp
);
3348 do_renew_lease(clp
, timestamp
);
3351 static const struct rpc_call_ops nfs4_renew_ops
= {
3352 .rpc_call_done
= nfs4_renew_done
,
3353 .rpc_release
= nfs4_renew_release
,
3356 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3358 struct rpc_message msg
= {
3359 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3363 struct nfs4_renewdata
*data
;
3365 if (!atomic_inc_not_zero(&clp
->cl_count
))
3367 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3371 data
->timestamp
= jiffies
;
3372 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3373 &nfs4_renew_ops
, data
);
3376 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3378 struct rpc_message msg
= {
3379 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3383 unsigned long now
= jiffies
;
3386 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3389 do_renew_lease(clp
, now
);
3393 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3395 return (server
->caps
& NFS_CAP_ACLS
)
3396 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3397 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3400 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3401 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3404 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3406 static void buf_to_pages(const void *buf
, size_t buflen
,
3407 struct page
**pages
, unsigned int *pgbase
)
3409 const void *p
= buf
;
3411 *pgbase
= offset_in_page(buf
);
3413 while (p
< buf
+ buflen
) {
3414 *(pages
++) = virt_to_page(p
);
3415 p
+= PAGE_CACHE_SIZE
;
3419 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3420 struct page
**pages
, unsigned int *pgbase
)
3422 struct page
*newpage
, **spages
;
3428 len
= min_t(size_t, PAGE_CACHE_SIZE
, buflen
);
3429 newpage
= alloc_page(GFP_KERNEL
);
3431 if (newpage
== NULL
)
3433 memcpy(page_address(newpage
), buf
, len
);
3438 } while (buflen
!= 0);
3444 __free_page(spages
[rc
-1]);
3448 struct nfs4_cached_acl
{
3454 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3456 struct nfs_inode
*nfsi
= NFS_I(inode
);
3458 spin_lock(&inode
->i_lock
);
3459 kfree(nfsi
->nfs4_acl
);
3460 nfsi
->nfs4_acl
= acl
;
3461 spin_unlock(&inode
->i_lock
);
3464 static void nfs4_zap_acl_attr(struct inode
*inode
)
3466 nfs4_set_cached_acl(inode
, NULL
);
3469 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3471 struct nfs_inode
*nfsi
= NFS_I(inode
);
3472 struct nfs4_cached_acl
*acl
;
3475 spin_lock(&inode
->i_lock
);
3476 acl
= nfsi
->nfs4_acl
;
3479 if (buf
== NULL
) /* user is just asking for length */
3481 if (acl
->cached
== 0)
3483 ret
= -ERANGE
; /* see getxattr(2) man page */
3484 if (acl
->len
> buflen
)
3486 memcpy(buf
, acl
->data
, acl
->len
);
3490 spin_unlock(&inode
->i_lock
);
3494 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3496 struct nfs4_cached_acl
*acl
;
3498 if (buf
&& acl_len
<= PAGE_SIZE
) {
3499 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3503 memcpy(acl
->data
, buf
, acl_len
);
3505 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3512 nfs4_set_cached_acl(inode
, acl
);
3515 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3517 struct page
*pages
[NFS4ACL_MAXPAGES
];
3518 struct nfs_getaclargs args
= {
3519 .fh
= NFS_FH(inode
),
3523 struct nfs_getaclres res
= {
3527 struct rpc_message msg
= {
3528 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3532 struct page
*localpage
= NULL
;
3535 if (buflen
< PAGE_SIZE
) {
3536 /* As long as we're doing a round trip to the server anyway,
3537 * let's be prepared for a page of acl data. */
3538 localpage
= alloc_page(GFP_KERNEL
);
3539 resp_buf
= page_address(localpage
);
3540 if (localpage
== NULL
)
3542 args
.acl_pages
[0] = localpage
;
3543 args
.acl_pgbase
= 0;
3544 args
.acl_len
= PAGE_SIZE
;
3547 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
3549 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3552 if (res
.acl_len
> args
.acl_len
)
3553 nfs4_write_cached_acl(inode
, NULL
, res
.acl_len
);
3555 nfs4_write_cached_acl(inode
, resp_buf
, res
.acl_len
);
3558 if (res
.acl_len
> buflen
)
3561 memcpy(buf
, resp_buf
, res
.acl_len
);
3566 __free_page(localpage
);
3570 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3572 struct nfs4_exception exception
= { };
3575 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3578 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3579 } while (exception
.retry
);
3583 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3585 struct nfs_server
*server
= NFS_SERVER(inode
);
3588 if (!nfs4_server_supports_acls(server
))
3590 ret
= nfs_revalidate_inode(server
, inode
);
3593 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3594 nfs_zap_acl_cache(inode
);
3595 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3598 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3601 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3603 struct nfs_server
*server
= NFS_SERVER(inode
);
3604 struct page
*pages
[NFS4ACL_MAXPAGES
];
3605 struct nfs_setaclargs arg
= {
3606 .fh
= NFS_FH(inode
),
3610 struct nfs_setaclres res
;
3611 struct rpc_message msg
= {
3612 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3618 if (!nfs4_server_supports_acls(server
))
3620 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3623 nfs_inode_return_delegation(inode
);
3624 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3627 * Free each page after tx, so the only ref left is
3628 * held by the network stack
3631 put_page(pages
[i
-1]);
3634 * Acl update can result in inode attribute update.
3635 * so mark the attribute cache invalid.
3637 spin_lock(&inode
->i_lock
);
3638 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3639 spin_unlock(&inode
->i_lock
);
3640 nfs_access_zap_cache(inode
);
3641 nfs_zap_acl_cache(inode
);
3645 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3647 struct nfs4_exception exception
= { };
3650 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3651 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3653 } while (exception
.retry
);
3658 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3660 struct nfs_client
*clp
= server
->nfs_client
;
3662 if (task
->tk_status
>= 0)
3664 switch(task
->tk_status
) {
3665 case -NFS4ERR_ADMIN_REVOKED
:
3666 case -NFS4ERR_BAD_STATEID
:
3667 case -NFS4ERR_OPENMODE
:
3670 nfs4_schedule_stateid_recovery(server
, state
);
3671 goto wait_on_recovery
;
3672 case -NFS4ERR_STALE_STATEID
:
3673 case -NFS4ERR_STALE_CLIENTID
:
3674 case -NFS4ERR_EXPIRED
:
3675 nfs4_schedule_lease_recovery(clp
);
3676 goto wait_on_recovery
;
3677 #if defined(CONFIG_NFS_V4_1)
3678 case -NFS4ERR_BADSESSION
:
3679 case -NFS4ERR_BADSLOT
:
3680 case -NFS4ERR_BAD_HIGH_SLOT
:
3681 case -NFS4ERR_DEADSESSION
:
3682 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3683 case -NFS4ERR_SEQ_FALSE_RETRY
:
3684 case -NFS4ERR_SEQ_MISORDERED
:
3685 dprintk("%s ERROR %d, Reset session\n", __func__
,
3687 nfs4_schedule_session_recovery(clp
->cl_session
);
3688 task
->tk_status
= 0;
3690 #endif /* CONFIG_NFS_V4_1 */
3691 case -NFS4ERR_DELAY
:
3692 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3693 case -NFS4ERR_GRACE
:
3695 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3696 task
->tk_status
= 0;
3698 case -NFS4ERR_OLD_STATEID
:
3699 task
->tk_status
= 0;
3702 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3705 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3706 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3707 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3708 task
->tk_status
= 0;
3712 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
3713 unsigned short port
, struct rpc_cred
*cred
,
3714 struct nfs4_setclientid_res
*res
)
3716 nfs4_verifier sc_verifier
;
3717 struct nfs4_setclientid setclientid
= {
3718 .sc_verifier
= &sc_verifier
,
3720 .sc_cb_ident
= clp
->cl_cb_ident
,
3722 struct rpc_message msg
= {
3723 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3724 .rpc_argp
= &setclientid
,
3732 p
= (__be32
*)sc_verifier
.data
;
3733 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3734 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3737 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3738 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3740 rpc_peeraddr2str(clp
->cl_rpcclient
,
3742 rpc_peeraddr2str(clp
->cl_rpcclient
,
3744 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3745 clp
->cl_id_uniquifier
);
3746 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3747 sizeof(setclientid
.sc_netid
),
3748 rpc_peeraddr2str(clp
->cl_rpcclient
,
3749 RPC_DISPLAY_NETID
));
3750 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3751 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3752 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3754 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3755 if (status
!= -NFS4ERR_CLID_INUSE
)
3758 ++clp
->cl_id_uniquifier
;
3762 ssleep(clp
->cl_lease_time
/ HZ
+ 1);
3767 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3768 struct nfs4_setclientid_res
*arg
,
3769 struct rpc_cred
*cred
)
3771 struct nfs_fsinfo fsinfo
;
3772 struct rpc_message msg
= {
3773 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3775 .rpc_resp
= &fsinfo
,
3782 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3784 spin_lock(&clp
->cl_lock
);
3785 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3786 clp
->cl_last_renewal
= now
;
3787 spin_unlock(&clp
->cl_lock
);
3792 struct nfs4_delegreturndata
{
3793 struct nfs4_delegreturnargs args
;
3794 struct nfs4_delegreturnres res
;
3796 nfs4_stateid stateid
;
3797 unsigned long timestamp
;
3798 struct nfs_fattr fattr
;
3802 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3804 struct nfs4_delegreturndata
*data
= calldata
;
3806 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3809 switch (task
->tk_status
) {
3810 case -NFS4ERR_STALE_STATEID
:
3811 case -NFS4ERR_EXPIRED
:
3813 renew_lease(data
->res
.server
, data
->timestamp
);
3816 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
3818 nfs_restart_rpc(task
, data
->res
.server
->nfs_client
);
3822 data
->rpc_status
= task
->tk_status
;
3825 static void nfs4_delegreturn_release(void *calldata
)
3830 #if defined(CONFIG_NFS_V4_1)
3831 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3833 struct nfs4_delegreturndata
*d_data
;
3835 d_data
= (struct nfs4_delegreturndata
*)data
;
3837 if (nfs4_setup_sequence(d_data
->res
.server
,
3838 &d_data
->args
.seq_args
,
3839 &d_data
->res
.seq_res
, 1, task
))
3841 rpc_call_start(task
);
3843 #endif /* CONFIG_NFS_V4_1 */
3845 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3846 #if defined(CONFIG_NFS_V4_1)
3847 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3848 #endif /* CONFIG_NFS_V4_1 */
3849 .rpc_call_done
= nfs4_delegreturn_done
,
3850 .rpc_release
= nfs4_delegreturn_release
,
3853 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3855 struct nfs4_delegreturndata
*data
;
3856 struct nfs_server
*server
= NFS_SERVER(inode
);
3857 struct rpc_task
*task
;
3858 struct rpc_message msg
= {
3859 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3862 struct rpc_task_setup task_setup_data
= {
3863 .rpc_client
= server
->client
,
3864 .rpc_message
= &msg
,
3865 .callback_ops
= &nfs4_delegreturn_ops
,
3866 .flags
= RPC_TASK_ASYNC
,
3870 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
3873 data
->args
.fhandle
= &data
->fh
;
3874 data
->args
.stateid
= &data
->stateid
;
3875 data
->args
.bitmask
= server
->attr_bitmask
;
3876 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3877 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3878 data
->res
.fattr
= &data
->fattr
;
3879 data
->res
.server
= server
;
3880 nfs_fattr_init(data
->res
.fattr
);
3881 data
->timestamp
= jiffies
;
3882 data
->rpc_status
= 0;
3884 task_setup_data
.callback_data
= data
;
3885 msg
.rpc_argp
= &data
->args
;
3886 msg
.rpc_resp
= &data
->res
;
3887 task
= rpc_run_task(&task_setup_data
);
3889 return PTR_ERR(task
);
3892 status
= nfs4_wait_for_completion_rpc_task(task
);
3895 status
= data
->rpc_status
;
3898 nfs_refresh_inode(inode
, &data
->fattr
);
3904 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3906 struct nfs_server
*server
= NFS_SERVER(inode
);
3907 struct nfs4_exception exception
= { };
3910 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3912 case -NFS4ERR_STALE_STATEID
:
3913 case -NFS4ERR_EXPIRED
:
3917 err
= nfs4_handle_exception(server
, err
, &exception
);
3918 } while (exception
.retry
);
3922 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3923 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3926 * sleep, with exponential backoff, and retry the LOCK operation.
3928 static unsigned long
3929 nfs4_set_lock_task_retry(unsigned long timeout
)
3931 schedule_timeout_killable(timeout
);
3933 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3934 return NFS4_LOCK_MAXTIMEOUT
;
3938 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3940 struct inode
*inode
= state
->inode
;
3941 struct nfs_server
*server
= NFS_SERVER(inode
);
3942 struct nfs_client
*clp
= server
->nfs_client
;
3943 struct nfs_lockt_args arg
= {
3944 .fh
= NFS_FH(inode
),
3947 struct nfs_lockt_res res
= {
3950 struct rpc_message msg
= {
3951 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3954 .rpc_cred
= state
->owner
->so_cred
,
3956 struct nfs4_lock_state
*lsp
;
3959 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3960 status
= nfs4_set_lock_state(state
, request
);
3963 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3964 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3965 arg
.lock_owner
.s_dev
= server
->s_dev
;
3966 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3969 request
->fl_type
= F_UNLCK
;
3971 case -NFS4ERR_DENIED
:
3974 request
->fl_ops
->fl_release_private(request
);
3979 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3981 struct nfs4_exception exception
= { };
3985 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3986 _nfs4_proc_getlk(state
, cmd
, request
),
3988 } while (exception
.retry
);
3992 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3995 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3997 res
= posix_lock_file_wait(file
, fl
);
4000 res
= flock_lock_file_wait(file
, fl
);
4008 struct nfs4_unlockdata
{
4009 struct nfs_locku_args arg
;
4010 struct nfs_locku_res res
;
4011 struct nfs4_lock_state
*lsp
;
4012 struct nfs_open_context
*ctx
;
4013 struct file_lock fl
;
4014 const struct nfs_server
*server
;
4015 unsigned long timestamp
;
4018 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4019 struct nfs_open_context
*ctx
,
4020 struct nfs4_lock_state
*lsp
,
4021 struct nfs_seqid
*seqid
)
4023 struct nfs4_unlockdata
*p
;
4024 struct inode
*inode
= lsp
->ls_state
->inode
;
4026 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4029 p
->arg
.fh
= NFS_FH(inode
);
4031 p
->arg
.seqid
= seqid
;
4032 p
->res
.seqid
= seqid
;
4033 p
->arg
.stateid
= &lsp
->ls_stateid
;
4035 atomic_inc(&lsp
->ls_count
);
4036 /* Ensure we don't close file until we're done freeing locks! */
4037 p
->ctx
= get_nfs_open_context(ctx
);
4038 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4039 p
->server
= NFS_SERVER(inode
);
4043 static void nfs4_locku_release_calldata(void *data
)
4045 struct nfs4_unlockdata
*calldata
= data
;
4046 nfs_free_seqid(calldata
->arg
.seqid
);
4047 nfs4_put_lock_state(calldata
->lsp
);
4048 put_nfs_open_context(calldata
->ctx
);
4052 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4054 struct nfs4_unlockdata
*calldata
= data
;
4056 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4058 switch (task
->tk_status
) {
4060 memcpy(calldata
->lsp
->ls_stateid
.data
,
4061 calldata
->res
.stateid
.data
,
4062 sizeof(calldata
->lsp
->ls_stateid
.data
));
4063 renew_lease(calldata
->server
, calldata
->timestamp
);
4065 case -NFS4ERR_BAD_STATEID
:
4066 case -NFS4ERR_OLD_STATEID
:
4067 case -NFS4ERR_STALE_STATEID
:
4068 case -NFS4ERR_EXPIRED
:
4071 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4072 nfs_restart_rpc(task
,
4073 calldata
->server
->nfs_client
);
4077 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4079 struct nfs4_unlockdata
*calldata
= data
;
4081 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4083 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
4084 /* Note: exit _without_ running nfs4_locku_done */
4085 task
->tk_action
= NULL
;
4088 calldata
->timestamp
= jiffies
;
4089 if (nfs4_setup_sequence(calldata
->server
,
4090 &calldata
->arg
.seq_args
,
4091 &calldata
->res
.seq_res
, 1, task
))
4093 rpc_call_start(task
);
4096 static const struct rpc_call_ops nfs4_locku_ops
= {
4097 .rpc_call_prepare
= nfs4_locku_prepare
,
4098 .rpc_call_done
= nfs4_locku_done
,
4099 .rpc_release
= nfs4_locku_release_calldata
,
4102 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4103 struct nfs_open_context
*ctx
,
4104 struct nfs4_lock_state
*lsp
,
4105 struct nfs_seqid
*seqid
)
4107 struct nfs4_unlockdata
*data
;
4108 struct rpc_message msg
= {
4109 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4110 .rpc_cred
= ctx
->cred
,
4112 struct rpc_task_setup task_setup_data
= {
4113 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4114 .rpc_message
= &msg
,
4115 .callback_ops
= &nfs4_locku_ops
,
4116 .workqueue
= nfsiod_workqueue
,
4117 .flags
= RPC_TASK_ASYNC
,
4120 /* Ensure this is an unlock - when canceling a lock, the
4121 * canceled lock is passed in, and it won't be an unlock.
4123 fl
->fl_type
= F_UNLCK
;
4125 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4127 nfs_free_seqid(seqid
);
4128 return ERR_PTR(-ENOMEM
);
4131 msg
.rpc_argp
= &data
->arg
;
4132 msg
.rpc_resp
= &data
->res
;
4133 task_setup_data
.callback_data
= data
;
4134 return rpc_run_task(&task_setup_data
);
4137 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4139 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4140 struct nfs_seqid
*seqid
;
4141 struct nfs4_lock_state
*lsp
;
4142 struct rpc_task
*task
;
4144 unsigned char fl_flags
= request
->fl_flags
;
4146 status
= nfs4_set_lock_state(state
, request
);
4147 /* Unlock _before_ we do the RPC call */
4148 request
->fl_flags
|= FL_EXISTS
;
4149 down_read(&nfsi
->rwsem
);
4150 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4151 up_read(&nfsi
->rwsem
);
4154 up_read(&nfsi
->rwsem
);
4157 /* Is this a delegated lock? */
4158 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4160 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4161 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4165 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4166 status
= PTR_ERR(task
);
4169 status
= nfs4_wait_for_completion_rpc_task(task
);
4172 request
->fl_flags
= fl_flags
;
4176 struct nfs4_lockdata
{
4177 struct nfs_lock_args arg
;
4178 struct nfs_lock_res res
;
4179 struct nfs4_lock_state
*lsp
;
4180 struct nfs_open_context
*ctx
;
4181 struct file_lock fl
;
4182 unsigned long timestamp
;
4185 struct nfs_server
*server
;
4188 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4189 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4192 struct nfs4_lockdata
*p
;
4193 struct inode
*inode
= lsp
->ls_state
->inode
;
4194 struct nfs_server
*server
= NFS_SERVER(inode
);
4196 p
= kzalloc(sizeof(*p
), gfp_mask
);
4200 p
->arg
.fh
= NFS_FH(inode
);
4202 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4203 if (p
->arg
.open_seqid
== NULL
)
4205 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4206 if (p
->arg
.lock_seqid
== NULL
)
4207 goto out_free_seqid
;
4208 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4209 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4210 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
4211 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4212 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4215 atomic_inc(&lsp
->ls_count
);
4216 p
->ctx
= get_nfs_open_context(ctx
);
4217 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4220 nfs_free_seqid(p
->arg
.open_seqid
);
4226 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4228 struct nfs4_lockdata
*data
= calldata
;
4229 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4231 dprintk("%s: begin!\n", __func__
);
4232 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4234 /* Do we need to do an open_to_lock_owner? */
4235 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4236 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4238 data
->arg
.open_stateid
= &state
->stateid
;
4239 data
->arg
.new_lock_owner
= 1;
4240 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4242 data
->arg
.new_lock_owner
= 0;
4243 data
->timestamp
= jiffies
;
4244 if (nfs4_setup_sequence(data
->server
,
4245 &data
->arg
.seq_args
,
4246 &data
->res
.seq_res
, 1, task
))
4248 rpc_call_start(task
);
4249 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4252 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4254 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4255 nfs4_lock_prepare(task
, calldata
);
4258 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4260 struct nfs4_lockdata
*data
= calldata
;
4262 dprintk("%s: begin!\n", __func__
);
4264 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4267 data
->rpc_status
= task
->tk_status
;
4268 if (data
->arg
.new_lock_owner
!= 0) {
4269 if (data
->rpc_status
== 0)
4270 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4274 if (data
->rpc_status
== 0) {
4275 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
4276 sizeof(data
->lsp
->ls_stateid
.data
));
4277 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4278 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
4281 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4284 static void nfs4_lock_release(void *calldata
)
4286 struct nfs4_lockdata
*data
= calldata
;
4288 dprintk("%s: begin!\n", __func__
);
4289 nfs_free_seqid(data
->arg
.open_seqid
);
4290 if (data
->cancelled
!= 0) {
4291 struct rpc_task
*task
;
4292 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4293 data
->arg
.lock_seqid
);
4295 rpc_put_task_async(task
);
4296 dprintk("%s: cancelling lock!\n", __func__
);
4298 nfs_free_seqid(data
->arg
.lock_seqid
);
4299 nfs4_put_lock_state(data
->lsp
);
4300 put_nfs_open_context(data
->ctx
);
4302 dprintk("%s: done!\n", __func__
);
4305 static const struct rpc_call_ops nfs4_lock_ops
= {
4306 .rpc_call_prepare
= nfs4_lock_prepare
,
4307 .rpc_call_done
= nfs4_lock_done
,
4308 .rpc_release
= nfs4_lock_release
,
4311 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4312 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4313 .rpc_call_done
= nfs4_lock_done
,
4314 .rpc_release
= nfs4_lock_release
,
4317 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4320 case -NFS4ERR_ADMIN_REVOKED
:
4321 case -NFS4ERR_BAD_STATEID
:
4322 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4323 if (new_lock_owner
!= 0 ||
4324 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4325 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4327 case -NFS4ERR_STALE_STATEID
:
4328 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4329 case -NFS4ERR_EXPIRED
:
4330 nfs4_schedule_lease_recovery(server
->nfs_client
);
4334 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4336 struct nfs4_lockdata
*data
;
4337 struct rpc_task
*task
;
4338 struct rpc_message msg
= {
4339 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4340 .rpc_cred
= state
->owner
->so_cred
,
4342 struct rpc_task_setup task_setup_data
= {
4343 .rpc_client
= NFS_CLIENT(state
->inode
),
4344 .rpc_message
= &msg
,
4345 .callback_ops
= &nfs4_lock_ops
,
4346 .workqueue
= nfsiod_workqueue
,
4347 .flags
= RPC_TASK_ASYNC
,
4351 dprintk("%s: begin!\n", __func__
);
4352 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4353 fl
->fl_u
.nfs4_fl
.owner
,
4354 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4358 data
->arg
.block
= 1;
4359 if (recovery_type
> NFS_LOCK_NEW
) {
4360 if (recovery_type
== NFS_LOCK_RECLAIM
)
4361 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4362 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4364 msg
.rpc_argp
= &data
->arg
;
4365 msg
.rpc_resp
= &data
->res
;
4366 task_setup_data
.callback_data
= data
;
4367 task
= rpc_run_task(&task_setup_data
);
4369 return PTR_ERR(task
);
4370 ret
= nfs4_wait_for_completion_rpc_task(task
);
4372 ret
= data
->rpc_status
;
4374 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4375 data
->arg
.new_lock_owner
, ret
);
4377 data
->cancelled
= 1;
4379 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4383 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4385 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4386 struct nfs4_exception exception
= { };
4390 /* Cache the lock if possible... */
4391 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4393 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4394 if (err
!= -NFS4ERR_DELAY
)
4396 nfs4_handle_exception(server
, err
, &exception
);
4397 } while (exception
.retry
);
4401 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4403 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4404 struct nfs4_exception exception
= { };
4407 err
= nfs4_set_lock_state(state
, request
);
4411 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4413 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4417 case -NFS4ERR_GRACE
:
4418 case -NFS4ERR_DELAY
:
4419 nfs4_handle_exception(server
, err
, &exception
);
4422 } while (exception
.retry
);
4427 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4429 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4430 unsigned char fl_flags
= request
->fl_flags
;
4431 int status
= -ENOLCK
;
4433 if ((fl_flags
& FL_POSIX
) &&
4434 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4436 /* Is this a delegated open? */
4437 status
= nfs4_set_lock_state(state
, request
);
4440 request
->fl_flags
|= FL_ACCESS
;
4441 status
= do_vfs_lock(request
->fl_file
, request
);
4444 down_read(&nfsi
->rwsem
);
4445 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4446 /* Yes: cache locks! */
4447 /* ...but avoid races with delegation recall... */
4448 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4449 status
= do_vfs_lock(request
->fl_file
, request
);
4452 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4455 /* Note: we always want to sleep here! */
4456 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4457 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4458 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
4460 up_read(&nfsi
->rwsem
);
4462 request
->fl_flags
= fl_flags
;
4466 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4468 struct nfs4_exception exception
= { };
4472 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4473 if (err
== -NFS4ERR_DENIED
)
4475 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4477 } while (exception
.retry
);
4482 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4484 struct nfs_open_context
*ctx
;
4485 struct nfs4_state
*state
;
4486 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4489 /* verify open state */
4490 ctx
= nfs_file_open_context(filp
);
4493 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4496 if (IS_GETLK(cmd
)) {
4498 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4502 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4505 if (request
->fl_type
== F_UNLCK
) {
4507 return nfs4_proc_unlck(state
, cmd
, request
);
4514 status
= nfs4_proc_setlk(state
, cmd
, request
);
4515 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4517 timeout
= nfs4_set_lock_task_retry(timeout
);
4518 status
= -ERESTARTSYS
;
4521 } while(status
< 0);
4525 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4527 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4528 struct nfs4_exception exception
= { };
4531 err
= nfs4_set_lock_state(state
, fl
);
4535 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4538 printk(KERN_ERR
"%s: unhandled error %d.\n",
4543 case -NFS4ERR_EXPIRED
:
4544 case -NFS4ERR_STALE_CLIENTID
:
4545 case -NFS4ERR_STALE_STATEID
:
4546 nfs4_schedule_lease_recovery(server
->nfs_client
);
4548 case -NFS4ERR_BADSESSION
:
4549 case -NFS4ERR_BADSLOT
:
4550 case -NFS4ERR_BAD_HIGH_SLOT
:
4551 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4552 case -NFS4ERR_DEADSESSION
:
4553 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
4557 * The show must go on: exit, but mark the
4558 * stateid as needing recovery.
4560 case -NFS4ERR_ADMIN_REVOKED
:
4561 case -NFS4ERR_BAD_STATEID
:
4562 case -NFS4ERR_OPENMODE
:
4563 nfs4_schedule_stateid_recovery(server
, state
);
4568 * User RPCSEC_GSS context has expired.
4569 * We cannot recover this stateid now, so
4570 * skip it and allow recovery thread to
4576 case -NFS4ERR_DENIED
:
4577 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4580 case -NFS4ERR_DELAY
:
4583 err
= nfs4_handle_exception(server
, err
, &exception
);
4584 } while (exception
.retry
);
4589 static void nfs4_release_lockowner_release(void *calldata
)
4594 const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4595 .rpc_release
= nfs4_release_lockowner_release
,
4598 void nfs4_release_lockowner(const struct nfs4_lock_state
*lsp
)
4600 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4601 struct nfs_release_lockowner_args
*args
;
4602 struct rpc_message msg
= {
4603 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4606 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
4608 args
= kmalloc(sizeof(*args
), GFP_NOFS
);
4611 args
->lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4612 args
->lock_owner
.id
= lsp
->ls_id
.id
;
4613 args
->lock_owner
.s_dev
= server
->s_dev
;
4614 msg
.rpc_argp
= args
;
4615 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, args
);
4618 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4620 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
4621 const void *buf
, size_t buflen
,
4622 int flags
, int type
)
4624 if (strcmp(key
, "") != 0)
4627 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
4630 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
4631 void *buf
, size_t buflen
, int type
)
4633 if (strcmp(key
, "") != 0)
4636 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
4639 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
4640 size_t list_len
, const char *name
,
4641 size_t name_len
, int type
)
4643 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
4645 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4648 if (list
&& len
<= list_len
)
4649 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
4653 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4655 if (!((fattr
->valid
& NFS_ATTR_FATTR_FILEID
) &&
4656 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4657 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4660 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4661 NFS_ATTR_FATTR_NLINK
;
4662 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4666 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4667 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4669 struct nfs_server
*server
= NFS_SERVER(dir
);
4671 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4672 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
4674 struct nfs4_fs_locations_arg args
= {
4675 .dir_fh
= NFS_FH(dir
),
4680 struct nfs4_fs_locations_res res
= {
4681 .fs_locations
= fs_locations
,
4683 struct rpc_message msg
= {
4684 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4690 dprintk("%s: start\n", __func__
);
4691 nfs_fattr_init(&fs_locations
->fattr
);
4692 fs_locations
->server
= server
;
4693 fs_locations
->nlocations
= 0;
4694 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4695 nfs_fixup_referral_attributes(&fs_locations
->fattr
);
4696 dprintk("%s: returned status = %d\n", __func__
, status
);
4700 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4703 struct nfs4_secinfo_arg args
= {
4704 .dir_fh
= NFS_FH(dir
),
4707 struct nfs4_secinfo_res res
= {
4710 struct rpc_message msg
= {
4711 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
4716 dprintk("NFS call secinfo %s\n", name
->name
);
4717 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4718 dprintk("NFS reply secinfo: %d\n", status
);
4722 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4724 struct nfs4_exception exception
= { };
4727 err
= nfs4_handle_exception(NFS_SERVER(dir
),
4728 _nfs4_proc_secinfo(dir
, name
, flavors
),
4730 } while (exception
.retry
);
4734 #ifdef CONFIG_NFS_V4_1
4736 * Check the exchange flags returned by the server for invalid flags, having
4737 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
4740 static int nfs4_check_cl_exchange_flags(u32 flags
)
4742 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
4744 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
4745 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
4747 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
4751 return -NFS4ERR_INVAL
;
4755 * nfs4_proc_exchange_id()
4757 * Since the clientid has expired, all compounds using sessions
4758 * associated with the stale clientid will be returning
4759 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4760 * be in some phase of session reset.
4762 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4764 nfs4_verifier verifier
;
4765 struct nfs41_exchange_id_args args
= {
4767 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
4769 struct nfs41_exchange_id_res res
= {
4773 struct rpc_message msg
= {
4774 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4781 dprintk("--> %s\n", __func__
);
4782 BUG_ON(clp
== NULL
);
4784 p
= (u32
*)verifier
.data
;
4785 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4786 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4787 args
.verifier
= &verifier
;
4789 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4792 init_utsname()->nodename
,
4793 init_utsname()->domainname
,
4794 clp
->cl_rpcclient
->cl_auth
->au_flavor
);
4796 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4798 status
= nfs4_check_cl_exchange_flags(clp
->cl_exchange_flags
);
4799 dprintk("<-- %s status= %d\n", __func__
, status
);
4803 struct nfs4_get_lease_time_data
{
4804 struct nfs4_get_lease_time_args
*args
;
4805 struct nfs4_get_lease_time_res
*res
;
4806 struct nfs_client
*clp
;
4809 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4813 struct nfs4_get_lease_time_data
*data
=
4814 (struct nfs4_get_lease_time_data
*)calldata
;
4816 dprintk("--> %s\n", __func__
);
4817 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4818 /* just setup sequence, do not trigger session recovery
4819 since we're invoked within one */
4820 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4821 &data
->args
->la_seq_args
,
4822 &data
->res
->lr_seq_res
, 0, task
);
4824 BUG_ON(ret
== -EAGAIN
);
4825 rpc_call_start(task
);
4826 dprintk("<-- %s\n", __func__
);
4830 * Called from nfs4_state_manager thread for session setup, so don't recover
4831 * from sequence operation or clientid errors.
4833 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4835 struct nfs4_get_lease_time_data
*data
=
4836 (struct nfs4_get_lease_time_data
*)calldata
;
4838 dprintk("--> %s\n", __func__
);
4839 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
4841 switch (task
->tk_status
) {
4842 case -NFS4ERR_DELAY
:
4843 case -NFS4ERR_GRACE
:
4844 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
4845 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
4846 task
->tk_status
= 0;
4847 nfs_restart_rpc(task
, data
->clp
);
4850 dprintk("<-- %s\n", __func__
);
4853 struct rpc_call_ops nfs4_get_lease_time_ops
= {
4854 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
4855 .rpc_call_done
= nfs4_get_lease_time_done
,
4858 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
4860 struct rpc_task
*task
;
4861 struct nfs4_get_lease_time_args args
;
4862 struct nfs4_get_lease_time_res res
= {
4863 .lr_fsinfo
= fsinfo
,
4865 struct nfs4_get_lease_time_data data
= {
4870 struct rpc_message msg
= {
4871 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
4875 struct rpc_task_setup task_setup
= {
4876 .rpc_client
= clp
->cl_rpcclient
,
4877 .rpc_message
= &msg
,
4878 .callback_ops
= &nfs4_get_lease_time_ops
,
4879 .callback_data
= &data
,
4880 .flags
= RPC_TASK_TIMEOUT
,
4884 dprintk("--> %s\n", __func__
);
4885 task
= rpc_run_task(&task_setup
);
4888 status
= PTR_ERR(task
);
4890 status
= task
->tk_status
;
4893 dprintk("<-- %s return %d\n", __func__
, status
);
4899 * Reset a slot table
4901 static int nfs4_reset_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
4904 struct nfs4_slot
*new = NULL
;
4908 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
4909 max_reqs
, tbl
->max_slots
);
4911 /* Does the newly negotiated max_reqs match the existing slot table? */
4912 if (max_reqs
!= tbl
->max_slots
) {
4914 new = kmalloc(max_reqs
* sizeof(struct nfs4_slot
),
4921 spin_lock(&tbl
->slot_tbl_lock
);
4924 tbl
->max_slots
= max_reqs
;
4926 for (i
= 0; i
< tbl
->max_slots
; ++i
)
4927 tbl
->slots
[i
].seq_nr
= ivalue
;
4928 spin_unlock(&tbl
->slot_tbl_lock
);
4929 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4930 tbl
, tbl
->slots
, tbl
->max_slots
);
4932 dprintk("<-- %s: return %d\n", __func__
, ret
);
4937 * Reset the forechannel and backchannel slot tables
4939 static int nfs4_reset_slot_tables(struct nfs4_session
*session
)
4943 status
= nfs4_reset_slot_table(&session
->fc_slot_table
,
4944 session
->fc_attrs
.max_reqs
, 1);
4948 status
= nfs4_reset_slot_table(&session
->bc_slot_table
,
4949 session
->bc_attrs
.max_reqs
, 0);
4953 /* Destroy the slot table */
4954 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
4956 if (session
->fc_slot_table
.slots
!= NULL
) {
4957 kfree(session
->fc_slot_table
.slots
);
4958 session
->fc_slot_table
.slots
= NULL
;
4960 if (session
->bc_slot_table
.slots
!= NULL
) {
4961 kfree(session
->bc_slot_table
.slots
);
4962 session
->bc_slot_table
.slots
= NULL
;
4968 * Initialize slot table
4970 static int nfs4_init_slot_table(struct nfs4_slot_table
*tbl
,
4971 int max_slots
, int ivalue
)
4973 struct nfs4_slot
*slot
;
4976 BUG_ON(max_slots
> NFS4_MAX_SLOT_TABLE
);
4978 dprintk("--> %s: max_reqs=%u\n", __func__
, max_slots
);
4980 slot
= kcalloc(max_slots
, sizeof(struct nfs4_slot
), GFP_NOFS
);
4985 spin_lock(&tbl
->slot_tbl_lock
);
4986 tbl
->max_slots
= max_slots
;
4988 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
4989 spin_unlock(&tbl
->slot_tbl_lock
);
4990 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4991 tbl
, tbl
->slots
, tbl
->max_slots
);
4993 dprintk("<-- %s: return %d\n", __func__
, ret
);
4998 * Initialize the forechannel and backchannel tables
5000 static int nfs4_init_slot_tables(struct nfs4_session
*session
)
5002 struct nfs4_slot_table
*tbl
;
5005 tbl
= &session
->fc_slot_table
;
5006 if (tbl
->slots
== NULL
) {
5007 status
= nfs4_init_slot_table(tbl
,
5008 session
->fc_attrs
.max_reqs
, 1);
5013 tbl
= &session
->bc_slot_table
;
5014 if (tbl
->slots
== NULL
) {
5015 status
= nfs4_init_slot_table(tbl
,
5016 session
->bc_attrs
.max_reqs
, 0);
5018 nfs4_destroy_slot_tables(session
);
5024 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5026 struct nfs4_session
*session
;
5027 struct nfs4_slot_table
*tbl
;
5029 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5033 tbl
= &session
->fc_slot_table
;
5034 tbl
->highest_used_slotid
= -1;
5035 spin_lock_init(&tbl
->slot_tbl_lock
);
5036 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5037 init_completion(&tbl
->complete
);
5039 tbl
= &session
->bc_slot_table
;
5040 tbl
->highest_used_slotid
= -1;
5041 spin_lock_init(&tbl
->slot_tbl_lock
);
5042 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5043 init_completion(&tbl
->complete
);
5045 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5051 void nfs4_destroy_session(struct nfs4_session
*session
)
5053 nfs4_proc_destroy_session(session
);
5054 dprintk("%s Destroy backchannel for xprt %p\n",
5055 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
5056 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
5057 NFS41_BC_MIN_CALLBACKS
);
5058 nfs4_destroy_slot_tables(session
);
5063 * Initialize the values to be used by the client in CREATE_SESSION
5064 * If nfs4_init_session set the fore channel request and response sizes,
5067 * Set the back channel max_resp_sz_cached to zero to force the client to
5068 * always set csa_cachethis to FALSE because the current implementation
5069 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5071 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5073 struct nfs4_session
*session
= args
->client
->cl_session
;
5074 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5075 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5078 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5080 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5081 /* Fore channel attributes */
5082 args
->fc_attrs
.headerpadsz
= 0;
5083 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5084 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5085 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5086 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
5088 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5089 "max_ops=%u max_reqs=%u\n",
5091 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5092 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5094 /* Back channel attributes */
5095 args
->bc_attrs
.headerpadsz
= 0;
5096 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5097 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5098 args
->bc_attrs
.max_resp_sz_cached
= 0;
5099 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5100 args
->bc_attrs
.max_reqs
= 1;
5102 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5103 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5105 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5106 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5107 args
->bc_attrs
.max_reqs
);
5110 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5112 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5113 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5115 if (rcvd
->headerpadsz
> sent
->headerpadsz
)
5117 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5120 * Our requested max_ops is the minimum we need; we're not
5121 * prepared to break up compounds into smaller pieces than that.
5122 * So, no point even trying to continue if the server won't
5125 if (rcvd
->max_ops
< sent
->max_ops
)
5127 if (rcvd
->max_reqs
== 0)
5132 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5134 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5135 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5137 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5139 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5141 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5143 /* These would render the backchannel useless: */
5144 if (rcvd
->max_ops
== 0)
5146 if (rcvd
->max_reqs
== 0)
5151 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5152 struct nfs4_session
*session
)
5156 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5159 return nfs4_verify_back_channel_attrs(args
, session
);
5162 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
5164 struct nfs4_session
*session
= clp
->cl_session
;
5165 struct nfs41_create_session_args args
= {
5167 .cb_program
= NFS4_CALLBACK
,
5169 struct nfs41_create_session_res res
= {
5172 struct rpc_message msg
= {
5173 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5179 nfs4_init_channel_attrs(&args
);
5180 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5182 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5185 /* Verify the session's negotiated channel_attrs values */
5186 status
= nfs4_verify_channel_attrs(&args
, session
);
5188 /* Increment the clientid slot sequence id */
5196 * Issues a CREATE_SESSION operation to the server.
5197 * It is the responsibility of the caller to verify the session is
5198 * expired before calling this routine.
5200 int nfs4_proc_create_session(struct nfs_client
*clp
)
5204 struct nfs4_session
*session
= clp
->cl_session
;
5206 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5208 status
= _nfs4_proc_create_session(clp
);
5212 /* Init and reset the fore channel */
5213 status
= nfs4_init_slot_tables(session
);
5214 dprintk("slot table initialization returned %d\n", status
);
5217 status
= nfs4_reset_slot_tables(session
);
5218 dprintk("slot table reset returned %d\n", status
);
5222 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5223 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5224 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5226 dprintk("<-- %s\n", __func__
);
5231 * Issue the over-the-wire RPC DESTROY_SESSION.
5232 * The caller must serialize access to this routine.
5234 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
5237 struct rpc_message msg
;
5239 dprintk("--> nfs4_proc_destroy_session\n");
5241 /* session is still being setup */
5242 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5245 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
5246 msg
.rpc_argp
= session
;
5247 msg
.rpc_resp
= NULL
;
5248 msg
.rpc_cred
= NULL
;
5249 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5253 "Got error %d from the server on DESTROY_SESSION. "
5254 "Session has been destroyed regardless...\n", status
);
5256 dprintk("<-- nfs4_proc_destroy_session\n");
5260 int nfs4_init_session(struct nfs_server
*server
)
5262 struct nfs_client
*clp
= server
->nfs_client
;
5263 struct nfs4_session
*session
;
5264 unsigned int rsize
, wsize
;
5267 if (!nfs4_has_session(clp
))
5270 session
= clp
->cl_session
;
5271 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5274 rsize
= server
->rsize
;
5276 rsize
= NFS_MAX_FILE_IO_SIZE
;
5277 wsize
= server
->wsize
;
5279 wsize
= NFS_MAX_FILE_IO_SIZE
;
5281 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5282 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5284 ret
= nfs4_recover_expired_lease(server
);
5286 ret
= nfs4_check_client_ready(clp
);
5290 int nfs4_init_ds_session(struct nfs_client
*clp
)
5292 struct nfs4_session
*session
= clp
->cl_session
;
5295 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5298 ret
= nfs4_client_recover_expired_lease(clp
);
5300 /* Test for the DS role */
5301 if (!is_ds_client(clp
))
5304 ret
= nfs4_check_client_ready(clp
);
5308 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5312 * Renew the cl_session lease.
5314 struct nfs4_sequence_data
{
5315 struct nfs_client
*clp
;
5316 struct nfs4_sequence_args args
;
5317 struct nfs4_sequence_res res
;
5320 static void nfs41_sequence_release(void *data
)
5322 struct nfs4_sequence_data
*calldata
= data
;
5323 struct nfs_client
*clp
= calldata
->clp
;
5325 if (atomic_read(&clp
->cl_count
) > 1)
5326 nfs4_schedule_state_renewal(clp
);
5327 nfs_put_client(clp
);
5331 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5333 switch(task
->tk_status
) {
5334 case -NFS4ERR_DELAY
:
5335 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5338 nfs4_schedule_lease_recovery(clp
);
5343 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5345 struct nfs4_sequence_data
*calldata
= data
;
5346 struct nfs_client
*clp
= calldata
->clp
;
5348 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5351 if (task
->tk_status
< 0) {
5352 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5353 if (atomic_read(&clp
->cl_count
) == 1)
5356 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5357 rpc_restart_call_prepare(task
);
5361 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5363 dprintk("<-- %s\n", __func__
);
5366 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5368 struct nfs4_sequence_data
*calldata
= data
;
5369 struct nfs_client
*clp
= calldata
->clp
;
5370 struct nfs4_sequence_args
*args
;
5371 struct nfs4_sequence_res
*res
;
5373 args
= task
->tk_msg
.rpc_argp
;
5374 res
= task
->tk_msg
.rpc_resp
;
5376 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, 0, task
))
5378 rpc_call_start(task
);
5381 static const struct rpc_call_ops nfs41_sequence_ops
= {
5382 .rpc_call_done
= nfs41_sequence_call_done
,
5383 .rpc_call_prepare
= nfs41_sequence_prepare
,
5384 .rpc_release
= nfs41_sequence_release
,
5387 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5389 struct nfs4_sequence_data
*calldata
;
5390 struct rpc_message msg
= {
5391 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5394 struct rpc_task_setup task_setup_data
= {
5395 .rpc_client
= clp
->cl_rpcclient
,
5396 .rpc_message
= &msg
,
5397 .callback_ops
= &nfs41_sequence_ops
,
5398 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5401 if (!atomic_inc_not_zero(&clp
->cl_count
))
5402 return ERR_PTR(-EIO
);
5403 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5404 if (calldata
== NULL
) {
5405 nfs_put_client(clp
);
5406 return ERR_PTR(-ENOMEM
);
5408 msg
.rpc_argp
= &calldata
->args
;
5409 msg
.rpc_resp
= &calldata
->res
;
5410 calldata
->clp
= clp
;
5411 task_setup_data
.callback_data
= calldata
;
5413 return rpc_run_task(&task_setup_data
);
5416 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5418 struct rpc_task
*task
;
5421 task
= _nfs41_proc_sequence(clp
, cred
);
5423 ret
= PTR_ERR(task
);
5425 rpc_put_task_async(task
);
5426 dprintk("<-- %s status=%d\n", __func__
, ret
);
5430 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5432 struct rpc_task
*task
;
5435 task
= _nfs41_proc_sequence(clp
, cred
);
5437 ret
= PTR_ERR(task
);
5440 ret
= rpc_wait_for_completion_task(task
);
5442 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5444 if (task
->tk_status
== 0)
5445 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5446 ret
= task
->tk_status
;
5450 dprintk("<-- %s status=%d\n", __func__
, ret
);
5454 struct nfs4_reclaim_complete_data
{
5455 struct nfs_client
*clp
;
5456 struct nfs41_reclaim_complete_args arg
;
5457 struct nfs41_reclaim_complete_res res
;
5460 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5462 struct nfs4_reclaim_complete_data
*calldata
= data
;
5464 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5465 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5466 &calldata
->arg
.seq_args
,
5467 &calldata
->res
.seq_res
, 0, task
))
5470 rpc_call_start(task
);
5473 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5475 switch(task
->tk_status
) {
5477 case -NFS4ERR_COMPLETE_ALREADY
:
5478 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5480 case -NFS4ERR_DELAY
:
5481 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5484 nfs4_schedule_lease_recovery(clp
);
5489 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5491 struct nfs4_reclaim_complete_data
*calldata
= data
;
5492 struct nfs_client
*clp
= calldata
->clp
;
5493 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5495 dprintk("--> %s\n", __func__
);
5496 if (!nfs41_sequence_done(task
, res
))
5499 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5500 rpc_restart_call_prepare(task
);
5503 dprintk("<-- %s\n", __func__
);
5506 static void nfs4_free_reclaim_complete_data(void *data
)
5508 struct nfs4_reclaim_complete_data
*calldata
= data
;
5513 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5514 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5515 .rpc_call_done
= nfs4_reclaim_complete_done
,
5516 .rpc_release
= nfs4_free_reclaim_complete_data
,
5520 * Issue a global reclaim complete.
5522 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5524 struct nfs4_reclaim_complete_data
*calldata
;
5525 struct rpc_task
*task
;
5526 struct rpc_message msg
= {
5527 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5529 struct rpc_task_setup task_setup_data
= {
5530 .rpc_client
= clp
->cl_rpcclient
,
5531 .rpc_message
= &msg
,
5532 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5533 .flags
= RPC_TASK_ASYNC
,
5535 int status
= -ENOMEM
;
5537 dprintk("--> %s\n", __func__
);
5538 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5539 if (calldata
== NULL
)
5541 calldata
->clp
= clp
;
5542 calldata
->arg
.one_fs
= 0;
5544 msg
.rpc_argp
= &calldata
->arg
;
5545 msg
.rpc_resp
= &calldata
->res
;
5546 task_setup_data
.callback_data
= calldata
;
5547 task
= rpc_run_task(&task_setup_data
);
5549 status
= PTR_ERR(task
);
5552 status
= nfs4_wait_for_completion_rpc_task(task
);
5554 status
= task
->tk_status
;
5558 dprintk("<-- %s status=%d\n", __func__
, status
);
5563 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
5565 struct nfs4_layoutget
*lgp
= calldata
;
5566 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5568 dprintk("--> %s\n", __func__
);
5569 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
5570 * right now covering the LAYOUTGET we are about to send.
5571 * However, that is not so catastrophic, and there seems
5572 * to be no way to prevent it completely.
5574 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
5575 &lgp
->res
.seq_res
, 0, task
))
5577 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
5578 NFS_I(lgp
->args
.inode
)->layout
,
5579 lgp
->args
.ctx
->state
)) {
5580 rpc_exit(task
, NFS4_OK
);
5583 rpc_call_start(task
);
5586 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
5588 struct nfs4_layoutget
*lgp
= calldata
;
5589 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5591 dprintk("--> %s\n", __func__
);
5593 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
5596 switch (task
->tk_status
) {
5599 case -NFS4ERR_LAYOUTTRYLATER
:
5600 case -NFS4ERR_RECALLCONFLICT
:
5601 task
->tk_status
= -NFS4ERR_DELAY
;
5604 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5605 rpc_restart_call_prepare(task
);
5609 dprintk("<-- %s\n", __func__
);
5612 static void nfs4_layoutget_release(void *calldata
)
5614 struct nfs4_layoutget
*lgp
= calldata
;
5616 dprintk("--> %s\n", __func__
);
5617 put_nfs_open_context(lgp
->args
.ctx
);
5619 dprintk("<-- %s\n", __func__
);
5622 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
5623 .rpc_call_prepare
= nfs4_layoutget_prepare
,
5624 .rpc_call_done
= nfs4_layoutget_done
,
5625 .rpc_release
= nfs4_layoutget_release
,
5628 int nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
)
5630 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5631 struct rpc_task
*task
;
5632 struct rpc_message msg
= {
5633 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
5634 .rpc_argp
= &lgp
->args
,
5635 .rpc_resp
= &lgp
->res
,
5637 struct rpc_task_setup task_setup_data
= {
5638 .rpc_client
= server
->client
,
5639 .rpc_message
= &msg
,
5640 .callback_ops
= &nfs4_layoutget_call_ops
,
5641 .callback_data
= lgp
,
5642 .flags
= RPC_TASK_ASYNC
,
5646 dprintk("--> %s\n", __func__
);
5648 lgp
->res
.layoutp
= &lgp
->args
.layout
;
5649 lgp
->res
.seq_res
.sr_slot
= NULL
;
5650 task
= rpc_run_task(&task_setup_data
);
5652 return PTR_ERR(task
);
5653 status
= nfs4_wait_for_completion_rpc_task(task
);
5655 status
= task
->tk_status
;
5657 status
= pnfs_layout_process(lgp
);
5659 dprintk("<-- %s status=%d\n", __func__
, status
);
5664 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5666 struct nfs4_getdeviceinfo_args args
= {
5669 struct nfs4_getdeviceinfo_res res
= {
5672 struct rpc_message msg
= {
5673 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
5679 dprintk("--> %s\n", __func__
);
5680 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5681 dprintk("<-- %s status=%d\n", __func__
, status
);
5686 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5688 struct nfs4_exception exception
= { };
5692 err
= nfs4_handle_exception(server
,
5693 _nfs4_proc_getdeviceinfo(server
, pdev
),
5695 } while (exception
.retry
);
5698 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
5700 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
5702 struct nfs4_layoutcommit_data
*data
= calldata
;
5703 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
5705 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
5706 &data
->res
.seq_res
, 1, task
))
5708 rpc_call_start(task
);
5712 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
5714 struct nfs4_layoutcommit_data
*data
= calldata
;
5715 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
5717 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5720 switch (task
->tk_status
) { /* Just ignore these failures */
5721 case NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
5722 case NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
5723 case NFS4ERR_BADLAYOUT
: /* no layout */
5724 case NFS4ERR_GRACE
: /* loca_recalim always false */
5725 task
->tk_status
= 0;
5728 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5729 nfs_restart_rpc(task
, server
->nfs_client
);
5733 if (task
->tk_status
== 0)
5734 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
5738 static void nfs4_layoutcommit_release(void *calldata
)
5740 struct nfs4_layoutcommit_data
*data
= calldata
;
5742 /* Matched by references in pnfs_set_layoutcommit */
5743 put_lseg(data
->lseg
);
5744 put_rpccred(data
->cred
);
5748 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
5749 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
5750 .rpc_call_done
= nfs4_layoutcommit_done
,
5751 .rpc_release
= nfs4_layoutcommit_release
,
5755 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
5757 struct rpc_message msg
= {
5758 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
5759 .rpc_argp
= &data
->args
,
5760 .rpc_resp
= &data
->res
,
5761 .rpc_cred
= data
->cred
,
5763 struct rpc_task_setup task_setup_data
= {
5764 .task
= &data
->task
,
5765 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
5766 .rpc_message
= &msg
,
5767 .callback_ops
= &nfs4_layoutcommit_ops
,
5768 .callback_data
= data
,
5769 .flags
= RPC_TASK_ASYNC
,
5771 struct rpc_task
*task
;
5774 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
5775 "lbw: %llu inode %lu\n",
5776 data
->task
.tk_pid
, sync
,
5777 data
->args
.lastbytewritten
,
5778 data
->args
.inode
->i_ino
);
5780 task
= rpc_run_task(&task_setup_data
);
5782 return PTR_ERR(task
);
5785 status
= nfs4_wait_for_completion_rpc_task(task
);
5788 status
= task
->tk_status
;
5790 dprintk("%s: status %d\n", __func__
, status
);
5794 #endif /* CONFIG_NFS_V4_1 */
5796 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
5797 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5798 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5799 .recover_open
= nfs4_open_reclaim
,
5800 .recover_lock
= nfs4_lock_reclaim
,
5801 .establish_clid
= nfs4_init_clientid
,
5802 .get_clid_cred
= nfs4_get_setclientid_cred
,
5805 #if defined(CONFIG_NFS_V4_1)
5806 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
5807 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5808 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5809 .recover_open
= nfs4_open_reclaim
,
5810 .recover_lock
= nfs4_lock_reclaim
,
5811 .establish_clid
= nfs41_init_clientid
,
5812 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5813 .reclaim_complete
= nfs41_proc_reclaim_complete
,
5815 #endif /* CONFIG_NFS_V4_1 */
5817 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
5818 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5819 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5820 .recover_open
= nfs4_open_expired
,
5821 .recover_lock
= nfs4_lock_expired
,
5822 .establish_clid
= nfs4_init_clientid
,
5823 .get_clid_cred
= nfs4_get_setclientid_cred
,
5826 #if defined(CONFIG_NFS_V4_1)
5827 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
5828 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5829 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5830 .recover_open
= nfs4_open_expired
,
5831 .recover_lock
= nfs4_lock_expired
,
5832 .establish_clid
= nfs41_init_clientid
,
5833 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5835 #endif /* CONFIG_NFS_V4_1 */
5837 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
5838 .sched_state_renewal
= nfs4_proc_async_renew
,
5839 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
5840 .renew_lease
= nfs4_proc_renew
,
5843 #if defined(CONFIG_NFS_V4_1)
5844 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
5845 .sched_state_renewal
= nfs41_proc_async_sequence
,
5846 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
5847 .renew_lease
= nfs4_proc_sequence
,
5851 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
5853 .call_sync
= _nfs4_call_sync
,
5854 .validate_stateid
= nfs4_validate_delegation_stateid
,
5855 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
5856 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
5857 .state_renewal_ops
= &nfs40_state_renewal_ops
,
5860 #if defined(CONFIG_NFS_V4_1)
5861 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
5863 .call_sync
= _nfs4_call_sync_session
,
5864 .validate_stateid
= nfs41_validate_delegation_stateid
,
5865 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
5866 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
5867 .state_renewal_ops
= &nfs41_state_renewal_ops
,
5871 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
5872 [0] = &nfs_v4_0_minor_ops
,
5873 #if defined(CONFIG_NFS_V4_1)
5874 [1] = &nfs_v4_1_minor_ops
,
5878 static const struct inode_operations nfs4_file_inode_operations
= {
5879 .permission
= nfs_permission
,
5880 .getattr
= nfs_getattr
,
5881 .setattr
= nfs_setattr
,
5882 .getxattr
= generic_getxattr
,
5883 .setxattr
= generic_setxattr
,
5884 .listxattr
= generic_listxattr
,
5885 .removexattr
= generic_removexattr
,
5888 const struct nfs_rpc_ops nfs_v4_clientops
= {
5889 .version
= 4, /* protocol version */
5890 .dentry_ops
= &nfs4_dentry_operations
,
5891 .dir_inode_ops
= &nfs4_dir_inode_operations
,
5892 .file_inode_ops
= &nfs4_file_inode_operations
,
5893 .getroot
= nfs4_proc_get_root
,
5894 .getattr
= nfs4_proc_getattr
,
5895 .setattr
= nfs4_proc_setattr
,
5896 .lookupfh
= nfs4_proc_lookupfh
,
5897 .lookup
= nfs4_proc_lookup
,
5898 .access
= nfs4_proc_access
,
5899 .readlink
= nfs4_proc_readlink
,
5900 .create
= nfs4_proc_create
,
5901 .remove
= nfs4_proc_remove
,
5902 .unlink_setup
= nfs4_proc_unlink_setup
,
5903 .unlink_done
= nfs4_proc_unlink_done
,
5904 .rename
= nfs4_proc_rename
,
5905 .rename_setup
= nfs4_proc_rename_setup
,
5906 .rename_done
= nfs4_proc_rename_done
,
5907 .link
= nfs4_proc_link
,
5908 .symlink
= nfs4_proc_symlink
,
5909 .mkdir
= nfs4_proc_mkdir
,
5910 .rmdir
= nfs4_proc_remove
,
5911 .readdir
= nfs4_proc_readdir
,
5912 .mknod
= nfs4_proc_mknod
,
5913 .statfs
= nfs4_proc_statfs
,
5914 .fsinfo
= nfs4_proc_fsinfo
,
5915 .pathconf
= nfs4_proc_pathconf
,
5916 .set_capabilities
= nfs4_server_capabilities
,
5917 .decode_dirent
= nfs4_decode_dirent
,
5918 .read_setup
= nfs4_proc_read_setup
,
5919 .read_done
= nfs4_read_done
,
5920 .write_setup
= nfs4_proc_write_setup
,
5921 .write_done
= nfs4_write_done
,
5922 .commit_setup
= nfs4_proc_commit_setup
,
5923 .commit_done
= nfs4_commit_done
,
5924 .lock
= nfs4_proc_lock
,
5925 .clear_acl_cache
= nfs4_zap_acl_attr
,
5926 .close_context
= nfs4_close_context
,
5927 .open_context
= nfs4_atomic_open
,
5928 .init_client
= nfs4_init_client
,
5929 .secinfo
= nfs4_proc_secinfo
,
5932 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
5933 .prefix
= XATTR_NAME_NFSV4_ACL
,
5934 .list
= nfs4_xattr_list_nfs4_acl
,
5935 .get
= nfs4_xattr_get_nfs4_acl
,
5936 .set
= nfs4_xattr_set_nfs4_acl
,
5939 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
5940 &nfs4_xattr_nfs4_acl_handler
,