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_EXPIRED
:
272 nfs4_schedule_stateid_recovery(server
, state
);
273 case -NFS4ERR_STALE_STATEID
:
274 case -NFS4ERR_STALE_CLIENTID
:
275 nfs4_schedule_lease_recovery(clp
);
276 goto wait_on_recovery
;
277 #if defined(CONFIG_NFS_V4_1)
278 case -NFS4ERR_BADSESSION
:
279 case -NFS4ERR_BADSLOT
:
280 case -NFS4ERR_BAD_HIGH_SLOT
:
281 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
282 case -NFS4ERR_DEADSESSION
:
283 case -NFS4ERR_SEQ_FALSE_RETRY
:
284 case -NFS4ERR_SEQ_MISORDERED
:
285 dprintk("%s ERROR: %d Reset session\n", __func__
,
287 nfs4_schedule_session_recovery(clp
->cl_session
);
288 exception
->retry
= 1;
290 #endif /* defined(CONFIG_NFS_V4_1) */
291 case -NFS4ERR_FILE_OPEN
:
292 if (exception
->timeout
> HZ
) {
293 /* We have retried a decent amount, time to
302 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
305 case -NFS4ERR_RETRY_UNCACHED_REP
:
306 case -NFS4ERR_OLD_STATEID
:
307 exception
->retry
= 1;
309 case -NFS4ERR_BADOWNER
:
310 /* The following works around a Linux server bug! */
311 case -NFS4ERR_BADNAME
:
312 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
313 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
314 exception
->retry
= 1;
315 printk(KERN_WARNING
"NFS: v4 server %s "
316 "does not accept raw "
318 "Reenabling the idmapper.\n",
319 server
->nfs_client
->cl_hostname
);
322 /* We failed to handle the error */
323 return nfs4_map_errors(ret
);
325 ret
= nfs4_wait_clnt_recover(clp
);
327 exception
->retry
= 1;
332 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
334 spin_lock(&clp
->cl_lock
);
335 if (time_before(clp
->cl_last_renewal
,timestamp
))
336 clp
->cl_last_renewal
= timestamp
;
337 spin_unlock(&clp
->cl_lock
);
340 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
342 do_renew_lease(server
->nfs_client
, timestamp
);
345 #if defined(CONFIG_NFS_V4_1)
348 * nfs4_free_slot - free a slot and efficiently update slot table.
350 * freeing a slot is trivially done by clearing its respective bit
352 * If the freed slotid equals highest_used_slotid we want to update it
353 * so that the server would be able to size down the slot table if needed,
354 * otherwise we know that the highest_used_slotid is still in use.
355 * When updating highest_used_slotid there may be "holes" in the bitmap
356 * so we need to scan down from highest_used_slotid to 0 looking for the now
357 * highest slotid in use.
358 * If none found, highest_used_slotid is set to -1.
360 * Must be called while holding tbl->slot_tbl_lock
363 nfs4_free_slot(struct nfs4_slot_table
*tbl
, struct nfs4_slot
*free_slot
)
365 int free_slotid
= free_slot
- tbl
->slots
;
366 int slotid
= free_slotid
;
368 BUG_ON(slotid
< 0 || slotid
>= NFS4_MAX_SLOT_TABLE
);
369 /* clear used bit in bitmap */
370 __clear_bit(slotid
, tbl
->used_slots
);
372 /* update highest_used_slotid when it is freed */
373 if (slotid
== tbl
->highest_used_slotid
) {
374 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
375 if (slotid
< tbl
->max_slots
)
376 tbl
->highest_used_slotid
= slotid
;
378 tbl
->highest_used_slotid
= -1;
380 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
381 free_slotid
, tbl
->highest_used_slotid
);
385 * Signal state manager thread if session fore channel is drained
387 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
389 struct rpc_task
*task
;
391 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
392 task
= rpc_wake_up_next(&ses
->fc_slot_table
.slot_tbl_waitq
);
394 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
398 if (ses
->fc_slot_table
.highest_used_slotid
!= -1)
401 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
402 complete(&ses
->fc_slot_table
.complete
);
406 * Signal state manager thread if session back channel is drained
408 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
410 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
411 ses
->bc_slot_table
.highest_used_slotid
!= -1)
413 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
414 complete(&ses
->bc_slot_table
.complete
);
417 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
419 struct nfs4_slot_table
*tbl
;
421 tbl
= &res
->sr_session
->fc_slot_table
;
423 /* just wake up the next guy waiting since
424 * we may have not consumed a slot after all */
425 dprintk("%s: No slot\n", __func__
);
429 spin_lock(&tbl
->slot_tbl_lock
);
430 nfs4_free_slot(tbl
, res
->sr_slot
);
431 nfs4_check_drain_fc_complete(res
->sr_session
);
432 spin_unlock(&tbl
->slot_tbl_lock
);
436 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
438 unsigned long timestamp
;
439 struct nfs_client
*clp
;
442 * sr_status remains 1 if an RPC level error occurred. The server
443 * may or may not have processed the sequence operation..
444 * Proceed as if the server received and processed the sequence
447 if (res
->sr_status
== 1)
448 res
->sr_status
= NFS_OK
;
450 /* don't increment the sequence number if the task wasn't sent */
451 if (!RPC_WAS_SENT(task
))
454 /* Check the SEQUENCE operation status */
455 switch (res
->sr_status
) {
457 /* Update the slot's sequence and clientid lease timer */
458 ++res
->sr_slot
->seq_nr
;
459 timestamp
= res
->sr_renewal_time
;
460 clp
= res
->sr_session
->clp
;
461 do_renew_lease(clp
, timestamp
);
462 /* Check sequence flags */
463 if (res
->sr_status_flags
!= 0)
464 nfs4_schedule_lease_recovery(clp
);
467 /* The server detected a resend of the RPC call and
468 * returned NFS4ERR_DELAY as per Section 2.10.6.2
471 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
473 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
474 res
->sr_slot
->seq_nr
);
477 /* Just update the slot sequence no. */
478 ++res
->sr_slot
->seq_nr
;
481 /* The session may be reset by one of the error handlers. */
482 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
483 nfs41_sequence_free_slot(res
);
486 if (!rpc_restart_call(task
))
488 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
492 static int nfs4_sequence_done(struct rpc_task
*task
,
493 struct nfs4_sequence_res
*res
)
495 if (res
->sr_session
== NULL
)
497 return nfs41_sequence_done(task
, res
);
501 * nfs4_find_slot - efficiently look for a free slot
503 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
504 * If found, we mark the slot as used, update the highest_used_slotid,
505 * and respectively set up the sequence operation args.
506 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
508 * Note: must be called with under the slot_tbl_lock.
511 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
514 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
515 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
517 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
518 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
520 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
521 if (slotid
>= tbl
->max_slots
)
523 __set_bit(slotid
, tbl
->used_slots
);
524 if (slotid
> tbl
->highest_used_slotid
)
525 tbl
->highest_used_slotid
= slotid
;
528 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
529 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
533 int nfs41_setup_sequence(struct nfs4_session
*session
,
534 struct nfs4_sequence_args
*args
,
535 struct nfs4_sequence_res
*res
,
537 struct rpc_task
*task
)
539 struct nfs4_slot
*slot
;
540 struct nfs4_slot_table
*tbl
;
543 dprintk("--> %s\n", __func__
);
544 /* slot already allocated? */
545 if (res
->sr_slot
!= NULL
)
548 tbl
= &session
->fc_slot_table
;
550 spin_lock(&tbl
->slot_tbl_lock
);
551 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
552 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
554 * The state manager will wait until the slot table is empty.
555 * Schedule the reset thread
557 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
558 spin_unlock(&tbl
->slot_tbl_lock
);
559 dprintk("%s Schedule Session Reset\n", __func__
);
563 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
564 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
565 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
566 spin_unlock(&tbl
->slot_tbl_lock
);
567 dprintk("%s enforce FIFO order\n", __func__
);
571 slotid
= nfs4_find_slot(tbl
);
572 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
573 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
574 spin_unlock(&tbl
->slot_tbl_lock
);
575 dprintk("<-- %s: no free slots\n", __func__
);
578 spin_unlock(&tbl
->slot_tbl_lock
);
580 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
581 slot
= tbl
->slots
+ slotid
;
582 args
->sa_session
= session
;
583 args
->sa_slotid
= slotid
;
584 args
->sa_cache_this
= cache_reply
;
586 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
588 res
->sr_session
= session
;
590 res
->sr_renewal_time
= jiffies
;
591 res
->sr_status_flags
= 0;
593 * sr_status is only set in decode_sequence, and so will remain
594 * set to 1 if an rpc level failure occurs.
599 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
601 int nfs4_setup_sequence(const struct nfs_server
*server
,
602 struct nfs4_sequence_args
*args
,
603 struct nfs4_sequence_res
*res
,
605 struct rpc_task
*task
)
607 struct nfs4_session
*session
= nfs4_get_session(server
);
610 if (session
== NULL
) {
611 args
->sa_session
= NULL
;
612 res
->sr_session
= NULL
;
616 dprintk("--> %s clp %p session %p sr_slot %td\n",
617 __func__
, session
->clp
, session
, res
->sr_slot
?
618 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
620 ret
= nfs41_setup_sequence(session
, args
, res
, cache_reply
,
623 dprintk("<-- %s status=%d\n", __func__
, ret
);
627 struct nfs41_call_sync_data
{
628 const struct nfs_server
*seq_server
;
629 struct nfs4_sequence_args
*seq_args
;
630 struct nfs4_sequence_res
*seq_res
;
634 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
636 struct nfs41_call_sync_data
*data
= calldata
;
638 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
640 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
641 data
->seq_res
, data
->cache_reply
, task
))
643 rpc_call_start(task
);
646 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
648 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
649 nfs41_call_sync_prepare(task
, calldata
);
652 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
654 struct nfs41_call_sync_data
*data
= calldata
;
656 nfs41_sequence_done(task
, data
->seq_res
);
659 struct rpc_call_ops nfs41_call_sync_ops
= {
660 .rpc_call_prepare
= nfs41_call_sync_prepare
,
661 .rpc_call_done
= nfs41_call_sync_done
,
664 struct rpc_call_ops nfs41_call_priv_sync_ops
= {
665 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
666 .rpc_call_done
= nfs41_call_sync_done
,
669 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
670 struct nfs_server
*server
,
671 struct rpc_message
*msg
,
672 struct nfs4_sequence_args
*args
,
673 struct nfs4_sequence_res
*res
,
678 struct rpc_task
*task
;
679 struct nfs41_call_sync_data data
= {
680 .seq_server
= server
,
683 .cache_reply
= cache_reply
,
685 struct rpc_task_setup task_setup
= {
688 .callback_ops
= &nfs41_call_sync_ops
,
689 .callback_data
= &data
694 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
695 task
= rpc_run_task(&task_setup
);
699 ret
= task
->tk_status
;
705 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
706 struct nfs_server
*server
,
707 struct rpc_message
*msg
,
708 struct nfs4_sequence_args
*args
,
709 struct nfs4_sequence_res
*res
,
712 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, cache_reply
, 0);
716 static int nfs4_sequence_done(struct rpc_task
*task
,
717 struct nfs4_sequence_res
*res
)
721 #endif /* CONFIG_NFS_V4_1 */
723 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
724 struct nfs_server
*server
,
725 struct rpc_message
*msg
,
726 struct nfs4_sequence_args
*args
,
727 struct nfs4_sequence_res
*res
,
730 args
->sa_session
= res
->sr_session
= NULL
;
731 return rpc_call_sync(clnt
, msg
, 0);
735 int nfs4_call_sync(struct rpc_clnt
*clnt
,
736 struct nfs_server
*server
,
737 struct rpc_message
*msg
,
738 struct nfs4_sequence_args
*args
,
739 struct nfs4_sequence_res
*res
,
742 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
743 args
, res
, cache_reply
);
746 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
748 struct nfs_inode
*nfsi
= NFS_I(dir
);
750 spin_lock(&dir
->i_lock
);
751 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
752 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
753 nfs_force_lookup_revalidate(dir
);
754 nfsi
->change_attr
= cinfo
->after
;
755 spin_unlock(&dir
->i_lock
);
758 struct nfs4_opendata
{
760 struct nfs_openargs o_arg
;
761 struct nfs_openres o_res
;
762 struct nfs_open_confirmargs c_arg
;
763 struct nfs_open_confirmres c_res
;
764 struct nfs_fattr f_attr
;
765 struct nfs_fattr dir_attr
;
768 struct nfs4_state_owner
*owner
;
769 struct nfs4_state
*state
;
771 unsigned long timestamp
;
772 unsigned int rpc_done
: 1;
778 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
780 p
->o_res
.f_attr
= &p
->f_attr
;
781 p
->o_res
.dir_attr
= &p
->dir_attr
;
782 p
->o_res
.seqid
= p
->o_arg
.seqid
;
783 p
->c_res
.seqid
= p
->c_arg
.seqid
;
784 p
->o_res
.server
= p
->o_arg
.server
;
785 nfs_fattr_init(&p
->f_attr
);
786 nfs_fattr_init(&p
->dir_attr
);
789 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
790 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
791 const struct iattr
*attrs
,
794 struct dentry
*parent
= dget_parent(path
->dentry
);
795 struct inode
*dir
= parent
->d_inode
;
796 struct nfs_server
*server
= NFS_SERVER(dir
);
797 struct nfs4_opendata
*p
;
799 p
= kzalloc(sizeof(*p
), gfp_mask
);
802 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
803 if (p
->o_arg
.seqid
== NULL
)
809 atomic_inc(&sp
->so_count
);
810 p
->o_arg
.fh
= NFS_FH(dir
);
811 p
->o_arg
.open_flags
= flags
;
812 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
813 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
814 p
->o_arg
.id
= sp
->so_owner_id
.id
;
815 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
816 p
->o_arg
.server
= server
;
817 p
->o_arg
.bitmask
= server
->attr_bitmask
;
818 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
819 if (flags
& O_CREAT
) {
822 p
->o_arg
.u
.attrs
= &p
->attrs
;
823 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
824 s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
828 p
->c_arg
.fh
= &p
->o_res
.fh
;
829 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
830 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
831 nfs4_init_opendata_res(p
);
841 static void nfs4_opendata_free(struct kref
*kref
)
843 struct nfs4_opendata
*p
= container_of(kref
,
844 struct nfs4_opendata
, kref
);
846 nfs_free_seqid(p
->o_arg
.seqid
);
847 if (p
->state
!= NULL
)
848 nfs4_put_open_state(p
->state
);
849 nfs4_put_state_owner(p
->owner
);
855 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
858 kref_put(&p
->kref
, nfs4_opendata_free
);
861 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
865 ret
= rpc_wait_for_completion_task(task
);
869 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
873 if (open_mode
& O_EXCL
)
875 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
877 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
878 && state
->n_rdonly
!= 0;
881 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
882 && state
->n_wronly
!= 0;
884 case FMODE_READ
|FMODE_WRITE
:
885 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
886 && state
->n_rdwr
!= 0;
892 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
894 if ((delegation
->type
& fmode
) != fmode
)
896 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
898 nfs_mark_delegation_referenced(delegation
);
902 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
911 case FMODE_READ
|FMODE_WRITE
:
914 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
917 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
919 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
920 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
921 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
924 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
927 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
929 case FMODE_READ
|FMODE_WRITE
:
930 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
934 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
936 write_seqlock(&state
->seqlock
);
937 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
938 write_sequnlock(&state
->seqlock
);
941 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
944 * Protect the call to nfs4_state_set_mode_locked and
945 * serialise the stateid update
947 write_seqlock(&state
->seqlock
);
948 if (deleg_stateid
!= NULL
) {
949 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
950 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
952 if (open_stateid
!= NULL
)
953 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
954 write_sequnlock(&state
->seqlock
);
955 spin_lock(&state
->owner
->so_lock
);
956 update_open_stateflags(state
, fmode
);
957 spin_unlock(&state
->owner
->so_lock
);
960 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
962 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
963 struct nfs_delegation
*deleg_cur
;
966 fmode
&= (FMODE_READ
|FMODE_WRITE
);
969 deleg_cur
= rcu_dereference(nfsi
->delegation
);
970 if (deleg_cur
== NULL
)
973 spin_lock(&deleg_cur
->lock
);
974 if (nfsi
->delegation
!= deleg_cur
||
975 (deleg_cur
->type
& fmode
) != fmode
)
976 goto no_delegation_unlock
;
978 if (delegation
== NULL
)
979 delegation
= &deleg_cur
->stateid
;
980 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
981 goto no_delegation_unlock
;
983 nfs_mark_delegation_referenced(deleg_cur
);
984 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
986 no_delegation_unlock
:
987 spin_unlock(&deleg_cur
->lock
);
991 if (!ret
&& open_stateid
!= NULL
) {
992 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1000 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1002 struct nfs_delegation
*delegation
;
1005 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1006 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1011 nfs_inode_return_delegation(inode
);
1014 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1016 struct nfs4_state
*state
= opendata
->state
;
1017 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1018 struct nfs_delegation
*delegation
;
1019 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
1020 fmode_t fmode
= opendata
->o_arg
.fmode
;
1021 nfs4_stateid stateid
;
1025 if (can_open_cached(state
, fmode
, open_mode
)) {
1026 spin_lock(&state
->owner
->so_lock
);
1027 if (can_open_cached(state
, fmode
, open_mode
)) {
1028 update_open_stateflags(state
, fmode
);
1029 spin_unlock(&state
->owner
->so_lock
);
1030 goto out_return_state
;
1032 spin_unlock(&state
->owner
->so_lock
);
1035 delegation
= rcu_dereference(nfsi
->delegation
);
1036 if (delegation
== NULL
||
1037 !can_open_delegated(delegation
, fmode
)) {
1041 /* Save the delegation */
1042 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
1044 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1049 /* Try to update the stateid using the delegation */
1050 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1051 goto out_return_state
;
1054 return ERR_PTR(ret
);
1056 atomic_inc(&state
->count
);
1060 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1062 struct inode
*inode
;
1063 struct nfs4_state
*state
= NULL
;
1064 struct nfs_delegation
*delegation
;
1067 if (!data
->rpc_done
) {
1068 state
= nfs4_try_open_cached(data
);
1073 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1075 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1076 ret
= PTR_ERR(inode
);
1080 state
= nfs4_get_open_state(inode
, data
->owner
);
1083 if (data
->o_res
.delegation_type
!= 0) {
1084 int delegation_flags
= 0;
1087 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1089 delegation_flags
= delegation
->flags
;
1091 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1092 nfs_inode_set_delegation(state
->inode
,
1093 data
->owner
->so_cred
,
1096 nfs_inode_reclaim_delegation(state
->inode
,
1097 data
->owner
->so_cred
,
1101 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1109 return ERR_PTR(ret
);
1112 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1114 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1115 struct nfs_open_context
*ctx
;
1117 spin_lock(&state
->inode
->i_lock
);
1118 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1119 if (ctx
->state
!= state
)
1121 get_nfs_open_context(ctx
);
1122 spin_unlock(&state
->inode
->i_lock
);
1125 spin_unlock(&state
->inode
->i_lock
);
1126 return ERR_PTR(-ENOENT
);
1129 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1131 struct nfs4_opendata
*opendata
;
1133 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1134 if (opendata
== NULL
)
1135 return ERR_PTR(-ENOMEM
);
1136 opendata
->state
= state
;
1137 atomic_inc(&state
->count
);
1141 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1143 struct nfs4_state
*newstate
;
1146 opendata
->o_arg
.open_flags
= 0;
1147 opendata
->o_arg
.fmode
= fmode
;
1148 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1149 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1150 nfs4_init_opendata_res(opendata
);
1151 ret
= _nfs4_recover_proc_open(opendata
);
1154 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1155 if (IS_ERR(newstate
))
1156 return PTR_ERR(newstate
);
1157 nfs4_close_state(&opendata
->path
, newstate
, fmode
);
1162 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1164 struct nfs4_state
*newstate
;
1167 /* memory barrier prior to reading state->n_* */
1168 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1170 if (state
->n_rdwr
!= 0) {
1171 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1172 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1175 if (newstate
!= state
)
1178 if (state
->n_wronly
!= 0) {
1179 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1180 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1183 if (newstate
!= state
)
1186 if (state
->n_rdonly
!= 0) {
1187 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1188 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1191 if (newstate
!= state
)
1195 * We may have performed cached opens for all three recoveries.
1196 * Check if we need to update the current stateid.
1198 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1199 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1200 write_seqlock(&state
->seqlock
);
1201 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1202 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1203 write_sequnlock(&state
->seqlock
);
1210 * reclaim state on the server after a reboot.
1212 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1214 struct nfs_delegation
*delegation
;
1215 struct nfs4_opendata
*opendata
;
1216 fmode_t delegation_type
= 0;
1219 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1220 if (IS_ERR(opendata
))
1221 return PTR_ERR(opendata
);
1222 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1223 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1225 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1226 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1227 delegation_type
= delegation
->type
;
1229 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1230 status
= nfs4_open_recover(opendata
, state
);
1231 nfs4_opendata_put(opendata
);
1235 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1237 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1238 struct nfs4_exception exception
= { };
1241 err
= _nfs4_do_open_reclaim(ctx
, state
);
1242 if (err
!= -NFS4ERR_DELAY
)
1244 nfs4_handle_exception(server
, err
, &exception
);
1245 } while (exception
.retry
);
1249 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1251 struct nfs_open_context
*ctx
;
1254 ctx
= nfs4_state_find_open_context(state
);
1256 return PTR_ERR(ctx
);
1257 ret
= nfs4_do_open_reclaim(ctx
, state
);
1258 put_nfs_open_context(ctx
);
1262 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1264 struct nfs4_opendata
*opendata
;
1267 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1268 if (IS_ERR(opendata
))
1269 return PTR_ERR(opendata
);
1270 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1271 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1272 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1273 ret
= nfs4_open_recover(opendata
, state
);
1274 nfs4_opendata_put(opendata
);
1278 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1280 struct nfs4_exception exception
= { };
1281 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1284 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1290 case -NFS4ERR_BADSESSION
:
1291 case -NFS4ERR_BADSLOT
:
1292 case -NFS4ERR_BAD_HIGH_SLOT
:
1293 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1294 case -NFS4ERR_DEADSESSION
:
1295 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
1297 case -NFS4ERR_STALE_CLIENTID
:
1298 case -NFS4ERR_STALE_STATEID
:
1299 case -NFS4ERR_EXPIRED
:
1300 /* Don't recall a delegation if it was lost */
1301 nfs4_schedule_lease_recovery(server
->nfs_client
);
1305 * The show must go on: exit, but mark the
1306 * stateid as needing recovery.
1308 case -NFS4ERR_ADMIN_REVOKED
:
1309 case -NFS4ERR_BAD_STATEID
:
1310 nfs4_schedule_stateid_recovery(server
, state
);
1313 * User RPCSEC_GSS context has expired.
1314 * We cannot recover this stateid now, so
1315 * skip it and allow recovery thread to
1322 err
= nfs4_handle_exception(server
, err
, &exception
);
1323 } while (exception
.retry
);
1328 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1330 struct nfs4_opendata
*data
= calldata
;
1332 data
->rpc_status
= task
->tk_status
;
1333 if (data
->rpc_status
== 0) {
1334 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1335 sizeof(data
->o_res
.stateid
.data
));
1336 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1337 renew_lease(data
->o_res
.server
, data
->timestamp
);
1342 static void nfs4_open_confirm_release(void *calldata
)
1344 struct nfs4_opendata
*data
= calldata
;
1345 struct nfs4_state
*state
= NULL
;
1347 /* If this request hasn't been cancelled, do nothing */
1348 if (data
->cancelled
== 0)
1350 /* In case of error, no cleanup! */
1351 if (!data
->rpc_done
)
1353 state
= nfs4_opendata_to_nfs4_state(data
);
1355 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1357 nfs4_opendata_put(data
);
1360 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1361 .rpc_call_done
= nfs4_open_confirm_done
,
1362 .rpc_release
= nfs4_open_confirm_release
,
1366 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1368 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1370 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1371 struct rpc_task
*task
;
1372 struct rpc_message msg
= {
1373 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1374 .rpc_argp
= &data
->c_arg
,
1375 .rpc_resp
= &data
->c_res
,
1376 .rpc_cred
= data
->owner
->so_cred
,
1378 struct rpc_task_setup task_setup_data
= {
1379 .rpc_client
= server
->client
,
1380 .rpc_message
= &msg
,
1381 .callback_ops
= &nfs4_open_confirm_ops
,
1382 .callback_data
= data
,
1383 .workqueue
= nfsiod_workqueue
,
1384 .flags
= RPC_TASK_ASYNC
,
1388 kref_get(&data
->kref
);
1390 data
->rpc_status
= 0;
1391 data
->timestamp
= jiffies
;
1392 task
= rpc_run_task(&task_setup_data
);
1394 return PTR_ERR(task
);
1395 status
= nfs4_wait_for_completion_rpc_task(task
);
1397 data
->cancelled
= 1;
1400 status
= data
->rpc_status
;
1405 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1407 struct nfs4_opendata
*data
= calldata
;
1408 struct nfs4_state_owner
*sp
= data
->owner
;
1410 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1413 * Check if we still need to send an OPEN call, or if we can use
1414 * a delegation instead.
1416 if (data
->state
!= NULL
) {
1417 struct nfs_delegation
*delegation
;
1419 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1422 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1423 if (delegation
!= NULL
&&
1424 test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) == 0) {
1430 /* Update sequence id. */
1431 data
->o_arg
.id
= sp
->so_owner_id
.id
;
1432 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1433 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1434 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1435 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1437 data
->timestamp
= jiffies
;
1438 if (nfs4_setup_sequence(data
->o_arg
.server
,
1439 &data
->o_arg
.seq_args
,
1440 &data
->o_res
.seq_res
, 1, task
))
1442 rpc_call_start(task
);
1445 task
->tk_action
= NULL
;
1449 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1451 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1452 nfs4_open_prepare(task
, calldata
);
1455 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1457 struct nfs4_opendata
*data
= calldata
;
1459 data
->rpc_status
= task
->tk_status
;
1461 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1464 if (task
->tk_status
== 0) {
1465 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1469 data
->rpc_status
= -ELOOP
;
1472 data
->rpc_status
= -EISDIR
;
1475 data
->rpc_status
= -ENOTDIR
;
1477 renew_lease(data
->o_res
.server
, data
->timestamp
);
1478 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1479 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1484 static void nfs4_open_release(void *calldata
)
1486 struct nfs4_opendata
*data
= calldata
;
1487 struct nfs4_state
*state
= NULL
;
1489 /* If this request hasn't been cancelled, do nothing */
1490 if (data
->cancelled
== 0)
1492 /* In case of error, no cleanup! */
1493 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1495 /* In case we need an open_confirm, no cleanup! */
1496 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1498 state
= nfs4_opendata_to_nfs4_state(data
);
1500 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1502 nfs4_opendata_put(data
);
1505 static const struct rpc_call_ops nfs4_open_ops
= {
1506 .rpc_call_prepare
= nfs4_open_prepare
,
1507 .rpc_call_done
= nfs4_open_done
,
1508 .rpc_release
= nfs4_open_release
,
1511 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1512 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1513 .rpc_call_done
= nfs4_open_done
,
1514 .rpc_release
= nfs4_open_release
,
1517 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1519 struct inode
*dir
= data
->dir
->d_inode
;
1520 struct nfs_server
*server
= NFS_SERVER(dir
);
1521 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1522 struct nfs_openres
*o_res
= &data
->o_res
;
1523 struct rpc_task
*task
;
1524 struct rpc_message msg
= {
1525 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1528 .rpc_cred
= data
->owner
->so_cred
,
1530 struct rpc_task_setup task_setup_data
= {
1531 .rpc_client
= server
->client
,
1532 .rpc_message
= &msg
,
1533 .callback_ops
= &nfs4_open_ops
,
1534 .callback_data
= data
,
1535 .workqueue
= nfsiod_workqueue
,
1536 .flags
= RPC_TASK_ASYNC
,
1540 kref_get(&data
->kref
);
1542 data
->rpc_status
= 0;
1543 data
->cancelled
= 0;
1545 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1546 task
= rpc_run_task(&task_setup_data
);
1548 return PTR_ERR(task
);
1549 status
= nfs4_wait_for_completion_rpc_task(task
);
1551 data
->cancelled
= 1;
1554 status
= data
->rpc_status
;
1560 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1562 struct inode
*dir
= data
->dir
->d_inode
;
1563 struct nfs_openres
*o_res
= &data
->o_res
;
1566 status
= nfs4_run_open_task(data
, 1);
1567 if (status
!= 0 || !data
->rpc_done
)
1570 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1572 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1573 status
= _nfs4_proc_open_confirm(data
);
1582 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1584 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1586 struct inode
*dir
= data
->dir
->d_inode
;
1587 struct nfs_server
*server
= NFS_SERVER(dir
);
1588 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1589 struct nfs_openres
*o_res
= &data
->o_res
;
1592 status
= nfs4_run_open_task(data
, 0);
1593 if (status
!= 0 || !data
->rpc_done
)
1596 if (o_arg
->open_flags
& O_CREAT
) {
1597 update_changeattr(dir
, &o_res
->cinfo
);
1598 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1600 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1601 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1602 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1603 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1604 status
= _nfs4_proc_open_confirm(data
);
1608 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1609 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1613 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1618 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1619 ret
= nfs4_wait_clnt_recover(clp
);
1622 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1623 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1625 nfs4_schedule_state_manager(clp
);
1631 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1633 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1638 * reclaim state on the server after a network partition.
1639 * Assumes caller holds the appropriate lock
1641 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1643 struct nfs4_opendata
*opendata
;
1646 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1647 if (IS_ERR(opendata
))
1648 return PTR_ERR(opendata
);
1649 ret
= nfs4_open_recover(opendata
, state
);
1651 d_drop(ctx
->path
.dentry
);
1652 nfs4_opendata_put(opendata
);
1656 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1658 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1659 struct nfs4_exception exception
= { };
1663 err
= _nfs4_open_expired(ctx
, state
);
1667 case -NFS4ERR_GRACE
:
1668 case -NFS4ERR_DELAY
:
1669 nfs4_handle_exception(server
, err
, &exception
);
1672 } while (exception
.retry
);
1677 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1679 struct nfs_open_context
*ctx
;
1682 ctx
= nfs4_state_find_open_context(state
);
1684 return PTR_ERR(ctx
);
1685 ret
= nfs4_do_open_expired(ctx
, state
);
1686 put_nfs_open_context(ctx
);
1691 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1692 * fields corresponding to attributes that were used to store the verifier.
1693 * Make sure we clobber those fields in the later setattr call
1695 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1697 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1698 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1699 sattr
->ia_valid
|= ATTR_ATIME
;
1701 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1702 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1703 sattr
->ia_valid
|= ATTR_MTIME
;
1707 * Returns a referenced nfs4_state
1709 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
)
1711 struct nfs4_state_owner
*sp
;
1712 struct nfs4_state
*state
= NULL
;
1713 struct nfs_server
*server
= NFS_SERVER(dir
);
1714 struct nfs4_opendata
*opendata
;
1717 /* Protect against reboot recovery conflicts */
1719 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1720 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1723 status
= nfs4_recover_expired_lease(server
);
1725 goto err_put_state_owner
;
1726 if (path
->dentry
->d_inode
!= NULL
)
1727 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, fmode
);
1729 opendata
= nfs4_opendata_alloc(path
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1730 if (opendata
== NULL
)
1731 goto err_put_state_owner
;
1733 if (path
->dentry
->d_inode
!= NULL
)
1734 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1736 status
= _nfs4_proc_open(opendata
);
1738 goto err_opendata_put
;
1740 state
= nfs4_opendata_to_nfs4_state(opendata
);
1741 status
= PTR_ERR(state
);
1743 goto err_opendata_put
;
1744 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1745 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1747 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1748 nfs4_exclusive_attrset(opendata
, sattr
);
1750 nfs_fattr_init(opendata
->o_res
.f_attr
);
1751 status
= nfs4_do_setattr(state
->inode
, cred
,
1752 opendata
->o_res
.f_attr
, sattr
,
1755 nfs_setattr_update_inode(state
->inode
, sattr
);
1756 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1758 nfs4_opendata_put(opendata
);
1759 nfs4_put_state_owner(sp
);
1763 nfs4_opendata_put(opendata
);
1764 err_put_state_owner
:
1765 nfs4_put_state_owner(sp
);
1772 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
)
1774 struct nfs4_exception exception
= { };
1775 struct nfs4_state
*res
;
1779 status
= _nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
, &res
);
1782 /* NOTE: BAD_SEQID means the server and client disagree about the
1783 * book-keeping w.r.t. state-changing operations
1784 * (OPEN/CLOSE/LOCK/LOCKU...)
1785 * It is actually a sign of a bug on the client or on the server.
1787 * If we receive a BAD_SEQID error in the particular case of
1788 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1789 * have unhashed the old state_owner for us, and that we can
1790 * therefore safely retry using a new one. We should still warn
1791 * the user though...
1793 if (status
== -NFS4ERR_BAD_SEQID
) {
1794 printk(KERN_WARNING
"NFS: v4 server %s "
1795 " returned a bad sequence-id error!\n",
1796 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1797 exception
.retry
= 1;
1801 * BAD_STATEID on OPEN means that the server cancelled our
1802 * state before it received the OPEN_CONFIRM.
1803 * Recover by retrying the request as per the discussion
1804 * on Page 181 of RFC3530.
1806 if (status
== -NFS4ERR_BAD_STATEID
) {
1807 exception
.retry
= 1;
1810 if (status
== -EAGAIN
) {
1811 /* We must have found a delegation */
1812 exception
.retry
= 1;
1815 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1816 status
, &exception
));
1817 } while (exception
.retry
);
1821 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1822 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1823 struct nfs4_state
*state
)
1825 struct nfs_server
*server
= NFS_SERVER(inode
);
1826 struct nfs_setattrargs arg
= {
1827 .fh
= NFS_FH(inode
),
1830 .bitmask
= server
->attr_bitmask
,
1832 struct nfs_setattrres res
= {
1836 struct rpc_message msg
= {
1837 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1842 unsigned long timestamp
= jiffies
;
1845 nfs_fattr_init(fattr
);
1847 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1848 /* Use that stateid */
1849 } else if (state
!= NULL
) {
1850 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
, current
->tgid
);
1852 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1854 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
1855 if (status
== 0 && state
!= NULL
)
1856 renew_lease(server
, timestamp
);
1860 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1861 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1862 struct nfs4_state
*state
)
1864 struct nfs_server
*server
= NFS_SERVER(inode
);
1865 struct nfs4_exception exception
= { };
1868 err
= nfs4_handle_exception(server
,
1869 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1871 } while (exception
.retry
);
1875 struct nfs4_closedata
{
1877 struct inode
*inode
;
1878 struct nfs4_state
*state
;
1879 struct nfs_closeargs arg
;
1880 struct nfs_closeres res
;
1881 struct nfs_fattr fattr
;
1882 unsigned long timestamp
;
1887 static void nfs4_free_closedata(void *data
)
1889 struct nfs4_closedata
*calldata
= data
;
1890 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1893 pnfs_roc_release(calldata
->state
->inode
);
1894 nfs4_put_open_state(calldata
->state
);
1895 nfs_free_seqid(calldata
->arg
.seqid
);
1896 nfs4_put_state_owner(sp
);
1897 path_put(&calldata
->path
);
1901 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
1904 spin_lock(&state
->owner
->so_lock
);
1905 if (!(fmode
& FMODE_READ
))
1906 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1907 if (!(fmode
& FMODE_WRITE
))
1908 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1909 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1910 spin_unlock(&state
->owner
->so_lock
);
1913 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1915 struct nfs4_closedata
*calldata
= data
;
1916 struct nfs4_state
*state
= calldata
->state
;
1917 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1919 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
1921 /* hmm. we are done with the inode, and in the process of freeing
1922 * the state_owner. we keep this around to process errors
1924 switch (task
->tk_status
) {
1927 pnfs_roc_set_barrier(state
->inode
,
1928 calldata
->roc_barrier
);
1929 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1930 renew_lease(server
, calldata
->timestamp
);
1931 nfs4_close_clear_stateid_flags(state
,
1932 calldata
->arg
.fmode
);
1934 case -NFS4ERR_STALE_STATEID
:
1935 case -NFS4ERR_OLD_STATEID
:
1936 case -NFS4ERR_BAD_STATEID
:
1937 case -NFS4ERR_EXPIRED
:
1938 if (calldata
->arg
.fmode
== 0)
1941 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
1942 rpc_restart_call_prepare(task
);
1944 nfs_release_seqid(calldata
->arg
.seqid
);
1945 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1948 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1950 struct nfs4_closedata
*calldata
= data
;
1951 struct nfs4_state
*state
= calldata
->state
;
1954 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1957 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1958 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
1959 spin_lock(&state
->owner
->so_lock
);
1960 /* Calculate the change in open mode */
1961 if (state
->n_rdwr
== 0) {
1962 if (state
->n_rdonly
== 0) {
1963 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1964 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1965 calldata
->arg
.fmode
&= ~FMODE_READ
;
1967 if (state
->n_wronly
== 0) {
1968 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1969 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1970 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
1973 spin_unlock(&state
->owner
->so_lock
);
1976 /* Note: exit _without_ calling nfs4_close_done */
1977 task
->tk_action
= NULL
;
1981 if (calldata
->arg
.fmode
== 0) {
1982 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
1983 if (calldata
->roc
&&
1984 pnfs_roc_drain(calldata
->inode
, &calldata
->roc_barrier
)) {
1985 rpc_sleep_on(&NFS_SERVER(calldata
->inode
)->roc_rpcwaitq
,
1991 nfs_fattr_init(calldata
->res
.fattr
);
1992 calldata
->timestamp
= jiffies
;
1993 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
1994 &calldata
->arg
.seq_args
, &calldata
->res
.seq_res
,
1997 rpc_call_start(task
);
2000 static const struct rpc_call_ops nfs4_close_ops
= {
2001 .rpc_call_prepare
= nfs4_close_prepare
,
2002 .rpc_call_done
= nfs4_close_done
,
2003 .rpc_release
= nfs4_free_closedata
,
2007 * It is possible for data to be read/written from a mem-mapped file
2008 * after the sys_close call (which hits the vfs layer as a flush).
2009 * This means that we can't safely call nfsv4 close on a file until
2010 * the inode is cleared. This in turn means that we are not good
2011 * NFSv4 citizens - we do not indicate to the server to update the file's
2012 * share state even when we are done with one of the three share
2013 * stateid's in the inode.
2015 * NOTE: Caller must be holding the sp->so_owner semaphore!
2017 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
, bool roc
)
2019 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2020 struct nfs4_closedata
*calldata
;
2021 struct nfs4_state_owner
*sp
= state
->owner
;
2022 struct rpc_task
*task
;
2023 struct rpc_message msg
= {
2024 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2025 .rpc_cred
= state
->owner
->so_cred
,
2027 struct rpc_task_setup task_setup_data
= {
2028 .rpc_client
= server
->client
,
2029 .rpc_message
= &msg
,
2030 .callback_ops
= &nfs4_close_ops
,
2031 .workqueue
= nfsiod_workqueue
,
2032 .flags
= RPC_TASK_ASYNC
,
2034 int status
= -ENOMEM
;
2036 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2037 if (calldata
== NULL
)
2039 calldata
->inode
= state
->inode
;
2040 calldata
->state
= state
;
2041 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2042 calldata
->arg
.stateid
= &state
->open_stateid
;
2043 /* Serialization for the sequence id */
2044 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2045 if (calldata
->arg
.seqid
== NULL
)
2046 goto out_free_calldata
;
2047 calldata
->arg
.fmode
= 0;
2048 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2049 calldata
->res
.fattr
= &calldata
->fattr
;
2050 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2051 calldata
->res
.server
= server
;
2052 calldata
->roc
= roc
;
2054 calldata
->path
= *path
;
2056 msg
.rpc_argp
= &calldata
->arg
;
2057 msg
.rpc_resp
= &calldata
->res
;
2058 task_setup_data
.callback_data
= calldata
;
2059 task
= rpc_run_task(&task_setup_data
);
2061 return PTR_ERR(task
);
2064 status
= rpc_wait_for_completion_task(task
);
2071 pnfs_roc_release(state
->inode
);
2072 nfs4_put_open_state(state
);
2073 nfs4_put_state_owner(sp
);
2077 static struct inode
*
2078 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2080 struct nfs4_state
*state
;
2082 /* Protect against concurrent sillydeletes */
2083 state
= nfs4_do_open(dir
, &ctx
->path
, ctx
->mode
, open_flags
, attr
, ctx
->cred
);
2085 return ERR_CAST(state
);
2087 return igrab(state
->inode
);
2090 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2092 if (ctx
->state
== NULL
)
2095 nfs4_close_sync(&ctx
->path
, ctx
->state
, ctx
->mode
);
2097 nfs4_close_state(&ctx
->path
, ctx
->state
, ctx
->mode
);
2100 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2102 struct nfs4_server_caps_arg args
= {
2105 struct nfs4_server_caps_res res
= {};
2106 struct rpc_message msg
= {
2107 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2113 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2115 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2116 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2117 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2118 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2119 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2120 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2121 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2122 server
->caps
|= NFS_CAP_ACLS
;
2123 if (res
.has_links
!= 0)
2124 server
->caps
|= NFS_CAP_HARDLINKS
;
2125 if (res
.has_symlinks
!= 0)
2126 server
->caps
|= NFS_CAP_SYMLINKS
;
2127 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2128 server
->caps
|= NFS_CAP_FILEID
;
2129 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2130 server
->caps
|= NFS_CAP_MODE
;
2131 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2132 server
->caps
|= NFS_CAP_NLINK
;
2133 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2134 server
->caps
|= NFS_CAP_OWNER
;
2135 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2136 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2137 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2138 server
->caps
|= NFS_CAP_ATIME
;
2139 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2140 server
->caps
|= NFS_CAP_CTIME
;
2141 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2142 server
->caps
|= NFS_CAP_MTIME
;
2144 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2145 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2146 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2147 server
->acl_bitmask
= res
.acl_bitmask
;
2153 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2155 struct nfs4_exception exception
= { };
2158 err
= nfs4_handle_exception(server
,
2159 _nfs4_server_capabilities(server
, fhandle
),
2161 } while (exception
.retry
);
2165 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2166 struct nfs_fsinfo
*info
)
2168 struct nfs4_lookup_root_arg args
= {
2169 .bitmask
= nfs4_fattr_bitmap
,
2171 struct nfs4_lookup_res res
= {
2173 .fattr
= info
->fattr
,
2176 struct rpc_message msg
= {
2177 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2182 nfs_fattr_init(info
->fattr
);
2183 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2186 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2187 struct nfs_fsinfo
*info
)
2189 struct nfs4_exception exception
= { };
2192 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2195 case -NFS4ERR_WRONGSEC
:
2198 err
= nfs4_handle_exception(server
, err
, &exception
);
2200 } while (exception
.retry
);
2204 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2205 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2207 struct rpc_auth
*auth
;
2210 auth
= rpcauth_create(flavor
, server
->client
);
2215 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2220 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2221 struct nfs_fsinfo
*info
)
2223 int i
, len
, status
= 0;
2224 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2226 len
= gss_mech_list_pseudoflavors(&flav_array
[0]);
2227 flav_array
[len
] = RPC_AUTH_NULL
;
2230 for (i
= 0; i
< len
; i
++) {
2231 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2232 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2237 * -EACCESS could mean that the user doesn't have correct permissions
2238 * to access the mount. It could also mean that we tried to mount
2239 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2240 * existing mount programs don't handle -EACCES very well so it should
2241 * be mapped to -EPERM instead.
2243 if (status
== -EACCES
)
2249 * get the file handle for the "/" directory on the server
2251 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2252 struct nfs_fsinfo
*info
)
2254 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2255 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2257 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2258 * by nfs4_map_errors() as this function exits.
2260 status
= nfs4_find_root_sec(server
, fhandle
, info
);
2262 status
= nfs4_server_capabilities(server
, fhandle
);
2264 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2265 return nfs4_map_errors(status
);
2268 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
2270 * Get locations and (maybe) other attributes of a referral.
2271 * Note that we'll actually follow the referral later when
2272 * we detect fsid mismatch in inode revalidation
2274 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
,
2275 struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2277 int status
= -ENOMEM
;
2278 struct page
*page
= NULL
;
2279 struct nfs4_fs_locations
*locations
= NULL
;
2281 page
= alloc_page(GFP_KERNEL
);
2284 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2285 if (locations
== NULL
)
2288 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2291 /* Make sure server returned a different fsid for the referral */
2292 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2293 dprintk("%s: server did not return a different fsid for"
2294 " a referral at %s\n", __func__
, name
->name
);
2298 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2299 nfs_fixup_referral_attributes(&locations
->fattr
);
2301 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2302 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2303 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2311 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2313 struct nfs4_getattr_arg args
= {
2315 .bitmask
= server
->attr_bitmask
,
2317 struct nfs4_getattr_res res
= {
2321 struct rpc_message msg
= {
2322 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2327 nfs_fattr_init(fattr
);
2328 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2331 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2333 struct nfs4_exception exception
= { };
2336 err
= nfs4_handle_exception(server
,
2337 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2339 } while (exception
.retry
);
2344 * The file is not closed if it is opened due to the a request to change
2345 * the size of the file. The open call will not be needed once the
2346 * VFS layer lookup-intents are implemented.
2348 * Close is called when the inode is destroyed.
2349 * If we haven't opened the file for O_WRONLY, we
2350 * need to in the size_change case to obtain a stateid.
2353 * Because OPEN is always done by name in nfsv4, it is
2354 * possible that we opened a different file by the same
2355 * name. We can recognize this race condition, but we
2356 * can't do anything about it besides returning an error.
2358 * This will be fixed with VFS changes (lookup-intent).
2361 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2362 struct iattr
*sattr
)
2364 struct inode
*inode
= dentry
->d_inode
;
2365 struct rpc_cred
*cred
= NULL
;
2366 struct nfs4_state
*state
= NULL
;
2369 nfs_fattr_init(fattr
);
2371 /* Search for an existing open(O_WRITE) file */
2372 if (sattr
->ia_valid
& ATTR_FILE
) {
2373 struct nfs_open_context
*ctx
;
2375 ctx
= nfs_file_open_context(sattr
->ia_file
);
2382 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2384 nfs_setattr_update_inode(inode
, sattr
);
2388 static int _nfs4_proc_lookupfh(struct rpc_clnt
*clnt
, struct nfs_server
*server
,
2389 const struct nfs_fh
*dirfh
, const struct qstr
*name
,
2390 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2393 struct nfs4_lookup_arg args
= {
2394 .bitmask
= server
->attr_bitmask
,
2398 struct nfs4_lookup_res res
= {
2403 struct rpc_message msg
= {
2404 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2409 nfs_fattr_init(fattr
);
2411 dprintk("NFS call lookupfh %s\n", name
->name
);
2412 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2413 dprintk("NFS reply lookupfh: %d\n", status
);
2417 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
2418 struct qstr
*name
, struct nfs_fh
*fhandle
,
2419 struct nfs_fattr
*fattr
)
2421 struct nfs4_exception exception
= { };
2424 err
= _nfs4_proc_lookupfh(server
->client
, server
, dirfh
, name
, fhandle
, fattr
);
2426 if (err
== -NFS4ERR_MOVED
) {
2430 err
= nfs4_handle_exception(server
, err
, &exception
);
2431 } while (exception
.retry
);
2435 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2436 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2437 struct nfs_fattr
*fattr
)
2441 dprintk("NFS call lookup %s\n", name
->name
);
2442 status
= _nfs4_proc_lookupfh(clnt
, NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
2443 if (status
== -NFS4ERR_MOVED
)
2444 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2445 dprintk("NFS reply lookup: %d\n", status
);
2449 void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
, struct nfs_fh
*fh
)
2451 memset(fh
, 0, sizeof(struct nfs_fh
));
2452 fattr
->fsid
.major
= 1;
2453 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2454 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_FSID
| NFS_ATTR_FATTR_MOUNTPOINT
;
2455 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2459 static int nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
, struct qstr
*name
,
2460 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2462 struct nfs4_exception exception
= { };
2465 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2466 _nfs4_proc_lookup(clnt
, dir
, name
, fhandle
, fattr
),
2469 nfs_fixup_secinfo_attributes(fattr
, fhandle
);
2470 } while (exception
.retry
);
2474 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2476 struct nfs_server
*server
= NFS_SERVER(inode
);
2477 struct nfs4_accessargs args
= {
2478 .fh
= NFS_FH(inode
),
2479 .bitmask
= server
->attr_bitmask
,
2481 struct nfs4_accessres res
= {
2484 struct rpc_message msg
= {
2485 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2488 .rpc_cred
= entry
->cred
,
2490 int mode
= entry
->mask
;
2494 * Determine which access bits we want to ask for...
2496 if (mode
& MAY_READ
)
2497 args
.access
|= NFS4_ACCESS_READ
;
2498 if (S_ISDIR(inode
->i_mode
)) {
2499 if (mode
& MAY_WRITE
)
2500 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2501 if (mode
& MAY_EXEC
)
2502 args
.access
|= NFS4_ACCESS_LOOKUP
;
2504 if (mode
& MAY_WRITE
)
2505 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2506 if (mode
& MAY_EXEC
)
2507 args
.access
|= NFS4_ACCESS_EXECUTE
;
2510 res
.fattr
= nfs_alloc_fattr();
2511 if (res
.fattr
== NULL
)
2514 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2517 if (res
.access
& NFS4_ACCESS_READ
)
2518 entry
->mask
|= MAY_READ
;
2519 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2520 entry
->mask
|= MAY_WRITE
;
2521 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2522 entry
->mask
|= MAY_EXEC
;
2523 nfs_refresh_inode(inode
, res
.fattr
);
2525 nfs_free_fattr(res
.fattr
);
2529 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2531 struct nfs4_exception exception
= { };
2534 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2535 _nfs4_proc_access(inode
, entry
),
2537 } while (exception
.retry
);
2542 * TODO: For the time being, we don't try to get any attributes
2543 * along with any of the zero-copy operations READ, READDIR,
2546 * In the case of the first three, we want to put the GETATTR
2547 * after the read-type operation -- this is because it is hard
2548 * to predict the length of a GETATTR response in v4, and thus
2549 * align the READ data correctly. This means that the GETATTR
2550 * may end up partially falling into the page cache, and we should
2551 * shift it into the 'tail' of the xdr_buf before processing.
2552 * To do this efficiently, we need to know the total length
2553 * of data received, which doesn't seem to be available outside
2556 * In the case of WRITE, we also want to put the GETATTR after
2557 * the operation -- in this case because we want to make sure
2558 * we get the post-operation mtime and size. This means that
2559 * we can't use xdr_encode_pages() as written: we need a variant
2560 * of it which would leave room in the 'tail' iovec.
2562 * Both of these changes to the XDR layer would in fact be quite
2563 * minor, but I decided to leave them for a subsequent patch.
2565 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2566 unsigned int pgbase
, unsigned int pglen
)
2568 struct nfs4_readlink args
= {
2569 .fh
= NFS_FH(inode
),
2574 struct nfs4_readlink_res res
;
2575 struct rpc_message msg
= {
2576 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2581 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2584 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2585 unsigned int pgbase
, unsigned int pglen
)
2587 struct nfs4_exception exception
= { };
2590 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2591 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2593 } while (exception
.retry
);
2599 * We will need to arrange for the VFS layer to provide an atomic open.
2600 * Until then, this create/open method is prone to inefficiency and race
2601 * conditions due to the lookup, create, and open VFS calls from sys_open()
2602 * placed on the wire.
2604 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2605 * The file will be opened again in the subsequent VFS open call
2606 * (nfs4_proc_file_open).
2608 * The open for read will just hang around to be used by any process that
2609 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2613 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2614 int flags
, struct nfs_open_context
*ctx
)
2616 struct path my_path
= {
2619 struct path
*path
= &my_path
;
2620 struct nfs4_state
*state
;
2621 struct rpc_cred
*cred
= NULL
;
2630 sattr
->ia_mode
&= ~current_umask();
2631 state
= nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
);
2633 if (IS_ERR(state
)) {
2634 status
= PTR_ERR(state
);
2637 d_add(dentry
, igrab(state
->inode
));
2638 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2642 nfs4_close_sync(path
, state
, fmode
);
2647 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2649 struct nfs_server
*server
= NFS_SERVER(dir
);
2650 struct nfs_removeargs args
= {
2652 .name
.len
= name
->len
,
2653 .name
.name
= name
->name
,
2654 .bitmask
= server
->attr_bitmask
,
2656 struct nfs_removeres res
= {
2659 struct rpc_message msg
= {
2660 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2664 int status
= -ENOMEM
;
2666 res
.dir_attr
= nfs_alloc_fattr();
2667 if (res
.dir_attr
== NULL
)
2670 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2672 update_changeattr(dir
, &res
.cinfo
);
2673 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2675 nfs_free_fattr(res
.dir_attr
);
2680 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2682 struct nfs4_exception exception
= { };
2685 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2686 _nfs4_proc_remove(dir
, name
),
2688 } while (exception
.retry
);
2692 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2694 struct nfs_server
*server
= NFS_SERVER(dir
);
2695 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2696 struct nfs_removeres
*res
= msg
->rpc_resp
;
2698 args
->bitmask
= server
->cache_consistency_bitmask
;
2699 res
->server
= server
;
2700 res
->seq_res
.sr_slot
= NULL
;
2701 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2704 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2706 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2708 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2710 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2712 update_changeattr(dir
, &res
->cinfo
);
2713 nfs_post_op_update_inode(dir
, res
->dir_attr
);
2717 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2719 struct nfs_server
*server
= NFS_SERVER(dir
);
2720 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2721 struct nfs_renameres
*res
= msg
->rpc_resp
;
2723 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2724 arg
->bitmask
= server
->attr_bitmask
;
2725 res
->server
= server
;
2728 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2729 struct inode
*new_dir
)
2731 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2733 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2735 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2738 update_changeattr(old_dir
, &res
->old_cinfo
);
2739 nfs_post_op_update_inode(old_dir
, res
->old_fattr
);
2740 update_changeattr(new_dir
, &res
->new_cinfo
);
2741 nfs_post_op_update_inode(new_dir
, res
->new_fattr
);
2745 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2746 struct inode
*new_dir
, struct qstr
*new_name
)
2748 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2749 struct nfs_renameargs arg
= {
2750 .old_dir
= NFS_FH(old_dir
),
2751 .new_dir
= NFS_FH(new_dir
),
2752 .old_name
= old_name
,
2753 .new_name
= new_name
,
2754 .bitmask
= server
->attr_bitmask
,
2756 struct nfs_renameres res
= {
2759 struct rpc_message msg
= {
2760 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2764 int status
= -ENOMEM
;
2766 res
.old_fattr
= nfs_alloc_fattr();
2767 res
.new_fattr
= nfs_alloc_fattr();
2768 if (res
.old_fattr
== NULL
|| res
.new_fattr
== NULL
)
2771 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2773 update_changeattr(old_dir
, &res
.old_cinfo
);
2774 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2775 update_changeattr(new_dir
, &res
.new_cinfo
);
2776 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2779 nfs_free_fattr(res
.new_fattr
);
2780 nfs_free_fattr(res
.old_fattr
);
2784 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2785 struct inode
*new_dir
, struct qstr
*new_name
)
2787 struct nfs4_exception exception
= { };
2790 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2791 _nfs4_proc_rename(old_dir
, old_name
,
2794 } while (exception
.retry
);
2798 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2800 struct nfs_server
*server
= NFS_SERVER(inode
);
2801 struct nfs4_link_arg arg
= {
2802 .fh
= NFS_FH(inode
),
2803 .dir_fh
= NFS_FH(dir
),
2805 .bitmask
= server
->attr_bitmask
,
2807 struct nfs4_link_res res
= {
2810 struct rpc_message msg
= {
2811 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2815 int status
= -ENOMEM
;
2817 res
.fattr
= nfs_alloc_fattr();
2818 res
.dir_attr
= nfs_alloc_fattr();
2819 if (res
.fattr
== NULL
|| res
.dir_attr
== NULL
)
2822 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2824 update_changeattr(dir
, &res
.cinfo
);
2825 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2826 nfs_post_op_update_inode(inode
, res
.fattr
);
2829 nfs_free_fattr(res
.dir_attr
);
2830 nfs_free_fattr(res
.fattr
);
2834 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2836 struct nfs4_exception exception
= { };
2839 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2840 _nfs4_proc_link(inode
, dir
, name
),
2842 } while (exception
.retry
);
2846 struct nfs4_createdata
{
2847 struct rpc_message msg
;
2848 struct nfs4_create_arg arg
;
2849 struct nfs4_create_res res
;
2851 struct nfs_fattr fattr
;
2852 struct nfs_fattr dir_fattr
;
2855 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2856 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2858 struct nfs4_createdata
*data
;
2860 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2862 struct nfs_server
*server
= NFS_SERVER(dir
);
2864 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2865 data
->msg
.rpc_argp
= &data
->arg
;
2866 data
->msg
.rpc_resp
= &data
->res
;
2867 data
->arg
.dir_fh
= NFS_FH(dir
);
2868 data
->arg
.server
= server
;
2869 data
->arg
.name
= name
;
2870 data
->arg
.attrs
= sattr
;
2871 data
->arg
.ftype
= ftype
;
2872 data
->arg
.bitmask
= server
->attr_bitmask
;
2873 data
->res
.server
= server
;
2874 data
->res
.fh
= &data
->fh
;
2875 data
->res
.fattr
= &data
->fattr
;
2876 data
->res
.dir_fattr
= &data
->dir_fattr
;
2877 nfs_fattr_init(data
->res
.fattr
);
2878 nfs_fattr_init(data
->res
.dir_fattr
);
2883 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2885 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
2886 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
2888 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2889 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2890 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2895 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2900 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2901 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2903 struct nfs4_createdata
*data
;
2904 int status
= -ENAMETOOLONG
;
2906 if (len
> NFS4_MAXPATHLEN
)
2910 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2914 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2915 data
->arg
.u
.symlink
.pages
= &page
;
2916 data
->arg
.u
.symlink
.len
= len
;
2918 status
= nfs4_do_create(dir
, dentry
, data
);
2920 nfs4_free_createdata(data
);
2925 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2926 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2928 struct nfs4_exception exception
= { };
2931 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2932 _nfs4_proc_symlink(dir
, dentry
, page
,
2935 } while (exception
.retry
);
2939 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2940 struct iattr
*sattr
)
2942 struct nfs4_createdata
*data
;
2943 int status
= -ENOMEM
;
2945 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2949 status
= nfs4_do_create(dir
, dentry
, data
);
2951 nfs4_free_createdata(data
);
2956 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2957 struct iattr
*sattr
)
2959 struct nfs4_exception exception
= { };
2962 sattr
->ia_mode
&= ~current_umask();
2964 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2965 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2967 } while (exception
.retry
);
2971 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2972 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
2974 struct inode
*dir
= dentry
->d_inode
;
2975 struct nfs4_readdir_arg args
= {
2980 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2983 struct nfs4_readdir_res res
;
2984 struct rpc_message msg
= {
2985 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2992 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
2993 dentry
->d_parent
->d_name
.name
,
2994 dentry
->d_name
.name
,
2995 (unsigned long long)cookie
);
2996 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2997 res
.pgbase
= args
.pgbase
;
2998 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3000 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3001 status
+= args
.pgbase
;
3004 nfs_invalidate_atime(dir
);
3006 dprintk("%s: returns %d\n", __func__
, status
);
3010 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3011 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3013 struct nfs4_exception exception
= { };
3016 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3017 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3018 pages
, count
, plus
),
3020 } while (exception
.retry
);
3024 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3025 struct iattr
*sattr
, dev_t rdev
)
3027 struct nfs4_createdata
*data
;
3028 int mode
= sattr
->ia_mode
;
3029 int status
= -ENOMEM
;
3031 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
3032 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
3034 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3039 data
->arg
.ftype
= NF4FIFO
;
3040 else if (S_ISBLK(mode
)) {
3041 data
->arg
.ftype
= NF4BLK
;
3042 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3043 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3045 else if (S_ISCHR(mode
)) {
3046 data
->arg
.ftype
= NF4CHR
;
3047 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3048 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3051 status
= nfs4_do_create(dir
, dentry
, data
);
3053 nfs4_free_createdata(data
);
3058 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3059 struct iattr
*sattr
, dev_t rdev
)
3061 struct nfs4_exception exception
= { };
3064 sattr
->ia_mode
&= ~current_umask();
3066 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3067 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3069 } while (exception
.retry
);
3073 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3074 struct nfs_fsstat
*fsstat
)
3076 struct nfs4_statfs_arg args
= {
3078 .bitmask
= server
->attr_bitmask
,
3080 struct nfs4_statfs_res res
= {
3083 struct rpc_message msg
= {
3084 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3089 nfs_fattr_init(fsstat
->fattr
);
3090 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3093 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3095 struct nfs4_exception exception
= { };
3098 err
= nfs4_handle_exception(server
,
3099 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3101 } while (exception
.retry
);
3105 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3106 struct nfs_fsinfo
*fsinfo
)
3108 struct nfs4_fsinfo_arg args
= {
3110 .bitmask
= server
->attr_bitmask
,
3112 struct nfs4_fsinfo_res res
= {
3115 struct rpc_message msg
= {
3116 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3121 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3124 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3126 struct nfs4_exception exception
= { };
3130 err
= nfs4_handle_exception(server
,
3131 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3133 } while (exception
.retry
);
3137 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3139 nfs_fattr_init(fsinfo
->fattr
);
3140 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3143 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3144 struct nfs_pathconf
*pathconf
)
3146 struct nfs4_pathconf_arg args
= {
3148 .bitmask
= server
->attr_bitmask
,
3150 struct nfs4_pathconf_res res
= {
3151 .pathconf
= pathconf
,
3153 struct rpc_message msg
= {
3154 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3159 /* None of the pathconf attributes are mandatory to implement */
3160 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3161 memset(pathconf
, 0, sizeof(*pathconf
));
3165 nfs_fattr_init(pathconf
->fattr
);
3166 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3169 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3170 struct nfs_pathconf
*pathconf
)
3172 struct nfs4_exception exception
= { };
3176 err
= nfs4_handle_exception(server
,
3177 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3179 } while (exception
.retry
);
3183 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3185 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3187 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3188 nfs_restart_rpc(task
, server
->nfs_client
);
3192 nfs_invalidate_atime(data
->inode
);
3193 if (task
->tk_status
> 0)
3194 renew_lease(server
, data
->timestamp
);
3198 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3201 dprintk("--> %s\n", __func__
);
3203 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3206 return data
->read_done_cb(task
, data
);
3209 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3211 data
->timestamp
= jiffies
;
3212 data
->read_done_cb
= nfs4_read_done_cb
;
3213 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3216 /* Reset the the nfs_read_data to send the read to the MDS. */
3217 void nfs4_reset_read(struct rpc_task
*task
, struct nfs_read_data
*data
)
3219 dprintk("%s Reset task for i/o through\n", __func__
);
3220 put_lseg(data
->lseg
);
3222 /* offsets will differ in the dense stripe case */
3223 data
->args
.offset
= data
->mds_offset
;
3224 data
->ds_clp
= NULL
;
3225 data
->args
.fh
= NFS_FH(data
->inode
);
3226 data
->read_done_cb
= nfs4_read_done_cb
;
3227 task
->tk_ops
= data
->mds_ops
;
3228 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3230 EXPORT_SYMBOL_GPL(nfs4_reset_read
);
3232 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3234 struct inode
*inode
= data
->inode
;
3236 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3237 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3240 if (task
->tk_status
>= 0) {
3241 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3242 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3247 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3249 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3251 return data
->write_done_cb(task
, data
);
3254 /* Reset the the nfs_write_data to send the write to the MDS. */
3255 void nfs4_reset_write(struct rpc_task
*task
, struct nfs_write_data
*data
)
3257 dprintk("%s Reset task for i/o through\n", __func__
);
3258 put_lseg(data
->lseg
);
3260 data
->ds_clp
= NULL
;
3261 data
->write_done_cb
= nfs4_write_done_cb
;
3262 data
->args
.fh
= NFS_FH(data
->inode
);
3263 data
->args
.bitmask
= data
->res
.server
->cache_consistency_bitmask
;
3264 data
->args
.offset
= data
->mds_offset
;
3265 data
->res
.fattr
= &data
->fattr
;
3266 task
->tk_ops
= data
->mds_ops
;
3267 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3269 EXPORT_SYMBOL_GPL(nfs4_reset_write
);
3271 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3273 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3276 data
->args
.bitmask
= NULL
;
3277 data
->res
.fattr
= NULL
;
3279 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3280 if (!data
->write_done_cb
)
3281 data
->write_done_cb
= nfs4_write_done_cb
;
3282 data
->res
.server
= server
;
3283 data
->timestamp
= jiffies
;
3285 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3288 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3290 struct inode
*inode
= data
->inode
;
3292 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3293 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3296 nfs_refresh_inode(inode
, data
->res
.fattr
);
3300 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3302 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3304 return data
->write_done_cb(task
, data
);
3307 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3309 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3312 data
->args
.bitmask
= NULL
;
3313 data
->res
.fattr
= NULL
;
3315 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3316 if (!data
->write_done_cb
)
3317 data
->write_done_cb
= nfs4_commit_done_cb
;
3318 data
->res
.server
= server
;
3319 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3322 struct nfs4_renewdata
{
3323 struct nfs_client
*client
;
3324 unsigned long timestamp
;
3328 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3329 * standalone procedure for queueing an asynchronous RENEW.
3331 static void nfs4_renew_release(void *calldata
)
3333 struct nfs4_renewdata
*data
= calldata
;
3334 struct nfs_client
*clp
= data
->client
;
3336 if (atomic_read(&clp
->cl_count
) > 1)
3337 nfs4_schedule_state_renewal(clp
);
3338 nfs_put_client(clp
);
3342 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3344 struct nfs4_renewdata
*data
= calldata
;
3345 struct nfs_client
*clp
= data
->client
;
3346 unsigned long timestamp
= data
->timestamp
;
3348 if (task
->tk_status
< 0) {
3349 /* Unless we're shutting down, schedule state recovery! */
3350 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) != 0)
3351 nfs4_schedule_lease_recovery(clp
);
3354 do_renew_lease(clp
, timestamp
);
3357 static const struct rpc_call_ops nfs4_renew_ops
= {
3358 .rpc_call_done
= nfs4_renew_done
,
3359 .rpc_release
= nfs4_renew_release
,
3362 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3364 struct rpc_message msg
= {
3365 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3369 struct nfs4_renewdata
*data
;
3371 if (!atomic_inc_not_zero(&clp
->cl_count
))
3373 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3377 data
->timestamp
= jiffies
;
3378 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3379 &nfs4_renew_ops
, data
);
3382 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3384 struct rpc_message msg
= {
3385 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3389 unsigned long now
= jiffies
;
3392 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3395 do_renew_lease(clp
, now
);
3399 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3401 return (server
->caps
& NFS_CAP_ACLS
)
3402 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3403 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3406 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3407 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3410 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3412 static void buf_to_pages(const void *buf
, size_t buflen
,
3413 struct page
**pages
, unsigned int *pgbase
)
3415 const void *p
= buf
;
3417 *pgbase
= offset_in_page(buf
);
3419 while (p
< buf
+ buflen
) {
3420 *(pages
++) = virt_to_page(p
);
3421 p
+= PAGE_CACHE_SIZE
;
3425 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3426 struct page
**pages
, unsigned int *pgbase
)
3428 struct page
*newpage
, **spages
;
3434 len
= min_t(size_t, PAGE_CACHE_SIZE
, buflen
);
3435 newpage
= alloc_page(GFP_KERNEL
);
3437 if (newpage
== NULL
)
3439 memcpy(page_address(newpage
), buf
, len
);
3444 } while (buflen
!= 0);
3450 __free_page(spages
[rc
-1]);
3454 struct nfs4_cached_acl
{
3460 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3462 struct nfs_inode
*nfsi
= NFS_I(inode
);
3464 spin_lock(&inode
->i_lock
);
3465 kfree(nfsi
->nfs4_acl
);
3466 nfsi
->nfs4_acl
= acl
;
3467 spin_unlock(&inode
->i_lock
);
3470 static void nfs4_zap_acl_attr(struct inode
*inode
)
3472 nfs4_set_cached_acl(inode
, NULL
);
3475 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3477 struct nfs_inode
*nfsi
= NFS_I(inode
);
3478 struct nfs4_cached_acl
*acl
;
3481 spin_lock(&inode
->i_lock
);
3482 acl
= nfsi
->nfs4_acl
;
3485 if (buf
== NULL
) /* user is just asking for length */
3487 if (acl
->cached
== 0)
3489 ret
= -ERANGE
; /* see getxattr(2) man page */
3490 if (acl
->len
> buflen
)
3492 memcpy(buf
, acl
->data
, acl
->len
);
3496 spin_unlock(&inode
->i_lock
);
3500 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3502 struct nfs4_cached_acl
*acl
;
3504 if (buf
&& acl_len
<= PAGE_SIZE
) {
3505 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3509 memcpy(acl
->data
, buf
, acl_len
);
3511 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3518 nfs4_set_cached_acl(inode
, acl
);
3521 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3523 struct page
*pages
[NFS4ACL_MAXPAGES
];
3524 struct nfs_getaclargs args
= {
3525 .fh
= NFS_FH(inode
),
3529 struct nfs_getaclres res
= {
3533 struct rpc_message msg
= {
3534 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3538 struct page
*localpage
= NULL
;
3541 if (buflen
< PAGE_SIZE
) {
3542 /* As long as we're doing a round trip to the server anyway,
3543 * let's be prepared for a page of acl data. */
3544 localpage
= alloc_page(GFP_KERNEL
);
3545 resp_buf
= page_address(localpage
);
3546 if (localpage
== NULL
)
3548 args
.acl_pages
[0] = localpage
;
3549 args
.acl_pgbase
= 0;
3550 args
.acl_len
= PAGE_SIZE
;
3553 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
3555 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3558 if (res
.acl_len
> args
.acl_len
)
3559 nfs4_write_cached_acl(inode
, NULL
, res
.acl_len
);
3561 nfs4_write_cached_acl(inode
, resp_buf
, res
.acl_len
);
3564 if (res
.acl_len
> buflen
)
3567 memcpy(buf
, resp_buf
, res
.acl_len
);
3572 __free_page(localpage
);
3576 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3578 struct nfs4_exception exception
= { };
3581 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3584 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3585 } while (exception
.retry
);
3589 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3591 struct nfs_server
*server
= NFS_SERVER(inode
);
3594 if (!nfs4_server_supports_acls(server
))
3596 ret
= nfs_revalidate_inode(server
, inode
);
3599 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3600 nfs_zap_acl_cache(inode
);
3601 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3604 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3607 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3609 struct nfs_server
*server
= NFS_SERVER(inode
);
3610 struct page
*pages
[NFS4ACL_MAXPAGES
];
3611 struct nfs_setaclargs arg
= {
3612 .fh
= NFS_FH(inode
),
3616 struct nfs_setaclres res
;
3617 struct rpc_message msg
= {
3618 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3624 if (!nfs4_server_supports_acls(server
))
3626 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3629 nfs_inode_return_delegation(inode
);
3630 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3633 * Free each page after tx, so the only ref left is
3634 * held by the network stack
3637 put_page(pages
[i
-1]);
3640 * Acl update can result in inode attribute update.
3641 * so mark the attribute cache invalid.
3643 spin_lock(&inode
->i_lock
);
3644 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3645 spin_unlock(&inode
->i_lock
);
3646 nfs_access_zap_cache(inode
);
3647 nfs_zap_acl_cache(inode
);
3651 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3653 struct nfs4_exception exception
= { };
3656 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3657 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3659 } while (exception
.retry
);
3664 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3666 struct nfs_client
*clp
= server
->nfs_client
;
3668 if (task
->tk_status
>= 0)
3670 switch(task
->tk_status
) {
3671 case -NFS4ERR_ADMIN_REVOKED
:
3672 case -NFS4ERR_BAD_STATEID
:
3673 case -NFS4ERR_OPENMODE
:
3676 nfs4_schedule_stateid_recovery(server
, state
);
3677 goto wait_on_recovery
;
3678 case -NFS4ERR_EXPIRED
:
3680 nfs4_schedule_stateid_recovery(server
, state
);
3681 case -NFS4ERR_STALE_STATEID
:
3682 case -NFS4ERR_STALE_CLIENTID
:
3683 nfs4_schedule_lease_recovery(clp
);
3684 goto wait_on_recovery
;
3685 #if defined(CONFIG_NFS_V4_1)
3686 case -NFS4ERR_BADSESSION
:
3687 case -NFS4ERR_BADSLOT
:
3688 case -NFS4ERR_BAD_HIGH_SLOT
:
3689 case -NFS4ERR_DEADSESSION
:
3690 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3691 case -NFS4ERR_SEQ_FALSE_RETRY
:
3692 case -NFS4ERR_SEQ_MISORDERED
:
3693 dprintk("%s ERROR %d, Reset session\n", __func__
,
3695 nfs4_schedule_session_recovery(clp
->cl_session
);
3696 task
->tk_status
= 0;
3698 #endif /* CONFIG_NFS_V4_1 */
3699 case -NFS4ERR_DELAY
:
3700 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3701 case -NFS4ERR_GRACE
:
3703 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3704 task
->tk_status
= 0;
3706 case -NFS4ERR_RETRY_UNCACHED_REP
:
3707 case -NFS4ERR_OLD_STATEID
:
3708 task
->tk_status
= 0;
3711 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3714 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3715 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3716 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3717 task
->tk_status
= 0;
3721 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
3722 unsigned short port
, struct rpc_cred
*cred
,
3723 struct nfs4_setclientid_res
*res
)
3725 nfs4_verifier sc_verifier
;
3726 struct nfs4_setclientid setclientid
= {
3727 .sc_verifier
= &sc_verifier
,
3729 .sc_cb_ident
= clp
->cl_cb_ident
,
3731 struct rpc_message msg
= {
3732 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3733 .rpc_argp
= &setclientid
,
3741 p
= (__be32
*)sc_verifier
.data
;
3742 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3743 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3746 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3747 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3749 rpc_peeraddr2str(clp
->cl_rpcclient
,
3751 rpc_peeraddr2str(clp
->cl_rpcclient
,
3753 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3754 clp
->cl_id_uniquifier
);
3755 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3756 sizeof(setclientid
.sc_netid
),
3757 rpc_peeraddr2str(clp
->cl_rpcclient
,
3758 RPC_DISPLAY_NETID
));
3759 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3760 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3761 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3763 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3764 if (status
!= -NFS4ERR_CLID_INUSE
)
3767 ++clp
->cl_id_uniquifier
;
3771 ssleep(clp
->cl_lease_time
/ HZ
+ 1);
3776 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3777 struct nfs4_setclientid_res
*arg
,
3778 struct rpc_cred
*cred
)
3780 struct nfs_fsinfo fsinfo
;
3781 struct rpc_message msg
= {
3782 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3784 .rpc_resp
= &fsinfo
,
3791 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3793 spin_lock(&clp
->cl_lock
);
3794 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3795 clp
->cl_last_renewal
= now
;
3796 spin_unlock(&clp
->cl_lock
);
3801 struct nfs4_delegreturndata
{
3802 struct nfs4_delegreturnargs args
;
3803 struct nfs4_delegreturnres res
;
3805 nfs4_stateid stateid
;
3806 unsigned long timestamp
;
3807 struct nfs_fattr fattr
;
3811 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3813 struct nfs4_delegreturndata
*data
= calldata
;
3815 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3818 switch (task
->tk_status
) {
3819 case -NFS4ERR_STALE_STATEID
:
3820 case -NFS4ERR_EXPIRED
:
3822 renew_lease(data
->res
.server
, data
->timestamp
);
3825 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
3827 nfs_restart_rpc(task
, data
->res
.server
->nfs_client
);
3831 data
->rpc_status
= task
->tk_status
;
3834 static void nfs4_delegreturn_release(void *calldata
)
3839 #if defined(CONFIG_NFS_V4_1)
3840 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3842 struct nfs4_delegreturndata
*d_data
;
3844 d_data
= (struct nfs4_delegreturndata
*)data
;
3846 if (nfs4_setup_sequence(d_data
->res
.server
,
3847 &d_data
->args
.seq_args
,
3848 &d_data
->res
.seq_res
, 1, task
))
3850 rpc_call_start(task
);
3852 #endif /* CONFIG_NFS_V4_1 */
3854 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3855 #if defined(CONFIG_NFS_V4_1)
3856 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3857 #endif /* CONFIG_NFS_V4_1 */
3858 .rpc_call_done
= nfs4_delegreturn_done
,
3859 .rpc_release
= nfs4_delegreturn_release
,
3862 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3864 struct nfs4_delegreturndata
*data
;
3865 struct nfs_server
*server
= NFS_SERVER(inode
);
3866 struct rpc_task
*task
;
3867 struct rpc_message msg
= {
3868 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3871 struct rpc_task_setup task_setup_data
= {
3872 .rpc_client
= server
->client
,
3873 .rpc_message
= &msg
,
3874 .callback_ops
= &nfs4_delegreturn_ops
,
3875 .flags
= RPC_TASK_ASYNC
,
3879 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
3882 data
->args
.fhandle
= &data
->fh
;
3883 data
->args
.stateid
= &data
->stateid
;
3884 data
->args
.bitmask
= server
->attr_bitmask
;
3885 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3886 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3887 data
->res
.fattr
= &data
->fattr
;
3888 data
->res
.server
= server
;
3889 nfs_fattr_init(data
->res
.fattr
);
3890 data
->timestamp
= jiffies
;
3891 data
->rpc_status
= 0;
3893 task_setup_data
.callback_data
= data
;
3894 msg
.rpc_argp
= &data
->args
;
3895 msg
.rpc_resp
= &data
->res
;
3896 task
= rpc_run_task(&task_setup_data
);
3898 return PTR_ERR(task
);
3901 status
= nfs4_wait_for_completion_rpc_task(task
);
3904 status
= data
->rpc_status
;
3907 nfs_refresh_inode(inode
, &data
->fattr
);
3913 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3915 struct nfs_server
*server
= NFS_SERVER(inode
);
3916 struct nfs4_exception exception
= { };
3919 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3921 case -NFS4ERR_STALE_STATEID
:
3922 case -NFS4ERR_EXPIRED
:
3926 err
= nfs4_handle_exception(server
, err
, &exception
);
3927 } while (exception
.retry
);
3931 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3932 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3935 * sleep, with exponential backoff, and retry the LOCK operation.
3937 static unsigned long
3938 nfs4_set_lock_task_retry(unsigned long timeout
)
3940 schedule_timeout_killable(timeout
);
3942 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3943 return NFS4_LOCK_MAXTIMEOUT
;
3947 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3949 struct inode
*inode
= state
->inode
;
3950 struct nfs_server
*server
= NFS_SERVER(inode
);
3951 struct nfs_client
*clp
= server
->nfs_client
;
3952 struct nfs_lockt_args arg
= {
3953 .fh
= NFS_FH(inode
),
3956 struct nfs_lockt_res res
= {
3959 struct rpc_message msg
= {
3960 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3963 .rpc_cred
= state
->owner
->so_cred
,
3965 struct nfs4_lock_state
*lsp
;
3968 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3969 status
= nfs4_set_lock_state(state
, request
);
3972 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3973 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3974 arg
.lock_owner
.s_dev
= server
->s_dev
;
3975 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3978 request
->fl_type
= F_UNLCK
;
3980 case -NFS4ERR_DENIED
:
3983 request
->fl_ops
->fl_release_private(request
);
3988 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3990 struct nfs4_exception exception
= { };
3994 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3995 _nfs4_proc_getlk(state
, cmd
, request
),
3997 } while (exception
.retry
);
4001 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4004 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4006 res
= posix_lock_file_wait(file
, fl
);
4009 res
= flock_lock_file_wait(file
, fl
);
4017 struct nfs4_unlockdata
{
4018 struct nfs_locku_args arg
;
4019 struct nfs_locku_res res
;
4020 struct nfs4_lock_state
*lsp
;
4021 struct nfs_open_context
*ctx
;
4022 struct file_lock fl
;
4023 const struct nfs_server
*server
;
4024 unsigned long timestamp
;
4027 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4028 struct nfs_open_context
*ctx
,
4029 struct nfs4_lock_state
*lsp
,
4030 struct nfs_seqid
*seqid
)
4032 struct nfs4_unlockdata
*p
;
4033 struct inode
*inode
= lsp
->ls_state
->inode
;
4035 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4038 p
->arg
.fh
= NFS_FH(inode
);
4040 p
->arg
.seqid
= seqid
;
4041 p
->res
.seqid
= seqid
;
4042 p
->arg
.stateid
= &lsp
->ls_stateid
;
4044 atomic_inc(&lsp
->ls_count
);
4045 /* Ensure we don't close file until we're done freeing locks! */
4046 p
->ctx
= get_nfs_open_context(ctx
);
4047 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4048 p
->server
= NFS_SERVER(inode
);
4052 static void nfs4_locku_release_calldata(void *data
)
4054 struct nfs4_unlockdata
*calldata
= data
;
4055 nfs_free_seqid(calldata
->arg
.seqid
);
4056 nfs4_put_lock_state(calldata
->lsp
);
4057 put_nfs_open_context(calldata
->ctx
);
4061 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4063 struct nfs4_unlockdata
*calldata
= data
;
4065 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4067 switch (task
->tk_status
) {
4069 memcpy(calldata
->lsp
->ls_stateid
.data
,
4070 calldata
->res
.stateid
.data
,
4071 sizeof(calldata
->lsp
->ls_stateid
.data
));
4072 renew_lease(calldata
->server
, calldata
->timestamp
);
4074 case -NFS4ERR_BAD_STATEID
:
4075 case -NFS4ERR_OLD_STATEID
:
4076 case -NFS4ERR_STALE_STATEID
:
4077 case -NFS4ERR_EXPIRED
:
4080 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4081 nfs_restart_rpc(task
,
4082 calldata
->server
->nfs_client
);
4086 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4088 struct nfs4_unlockdata
*calldata
= data
;
4090 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4092 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
4093 /* Note: exit _without_ running nfs4_locku_done */
4094 task
->tk_action
= NULL
;
4097 calldata
->timestamp
= jiffies
;
4098 if (nfs4_setup_sequence(calldata
->server
,
4099 &calldata
->arg
.seq_args
,
4100 &calldata
->res
.seq_res
, 1, task
))
4102 rpc_call_start(task
);
4105 static const struct rpc_call_ops nfs4_locku_ops
= {
4106 .rpc_call_prepare
= nfs4_locku_prepare
,
4107 .rpc_call_done
= nfs4_locku_done
,
4108 .rpc_release
= nfs4_locku_release_calldata
,
4111 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4112 struct nfs_open_context
*ctx
,
4113 struct nfs4_lock_state
*lsp
,
4114 struct nfs_seqid
*seqid
)
4116 struct nfs4_unlockdata
*data
;
4117 struct rpc_message msg
= {
4118 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4119 .rpc_cred
= ctx
->cred
,
4121 struct rpc_task_setup task_setup_data
= {
4122 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4123 .rpc_message
= &msg
,
4124 .callback_ops
= &nfs4_locku_ops
,
4125 .workqueue
= nfsiod_workqueue
,
4126 .flags
= RPC_TASK_ASYNC
,
4129 /* Ensure this is an unlock - when canceling a lock, the
4130 * canceled lock is passed in, and it won't be an unlock.
4132 fl
->fl_type
= F_UNLCK
;
4134 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4136 nfs_free_seqid(seqid
);
4137 return ERR_PTR(-ENOMEM
);
4140 msg
.rpc_argp
= &data
->arg
;
4141 msg
.rpc_resp
= &data
->res
;
4142 task_setup_data
.callback_data
= data
;
4143 return rpc_run_task(&task_setup_data
);
4146 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4148 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4149 struct nfs_seqid
*seqid
;
4150 struct nfs4_lock_state
*lsp
;
4151 struct rpc_task
*task
;
4153 unsigned char fl_flags
= request
->fl_flags
;
4155 status
= nfs4_set_lock_state(state
, request
);
4156 /* Unlock _before_ we do the RPC call */
4157 request
->fl_flags
|= FL_EXISTS
;
4158 down_read(&nfsi
->rwsem
);
4159 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4160 up_read(&nfsi
->rwsem
);
4163 up_read(&nfsi
->rwsem
);
4166 /* Is this a delegated lock? */
4167 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4169 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4170 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4174 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4175 status
= PTR_ERR(task
);
4178 status
= nfs4_wait_for_completion_rpc_task(task
);
4181 request
->fl_flags
= fl_flags
;
4185 struct nfs4_lockdata
{
4186 struct nfs_lock_args arg
;
4187 struct nfs_lock_res res
;
4188 struct nfs4_lock_state
*lsp
;
4189 struct nfs_open_context
*ctx
;
4190 struct file_lock fl
;
4191 unsigned long timestamp
;
4194 struct nfs_server
*server
;
4197 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4198 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4201 struct nfs4_lockdata
*p
;
4202 struct inode
*inode
= lsp
->ls_state
->inode
;
4203 struct nfs_server
*server
= NFS_SERVER(inode
);
4205 p
= kzalloc(sizeof(*p
), gfp_mask
);
4209 p
->arg
.fh
= NFS_FH(inode
);
4211 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4212 if (p
->arg
.open_seqid
== NULL
)
4214 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4215 if (p
->arg
.lock_seqid
== NULL
)
4216 goto out_free_seqid
;
4217 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4218 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4219 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
4220 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4221 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4224 atomic_inc(&lsp
->ls_count
);
4225 p
->ctx
= get_nfs_open_context(ctx
);
4226 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4229 nfs_free_seqid(p
->arg
.open_seqid
);
4235 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4237 struct nfs4_lockdata
*data
= calldata
;
4238 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4240 dprintk("%s: begin!\n", __func__
);
4241 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4243 /* Do we need to do an open_to_lock_owner? */
4244 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4245 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4247 data
->arg
.open_stateid
= &state
->stateid
;
4248 data
->arg
.new_lock_owner
= 1;
4249 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4251 data
->arg
.new_lock_owner
= 0;
4252 data
->timestamp
= jiffies
;
4253 if (nfs4_setup_sequence(data
->server
,
4254 &data
->arg
.seq_args
,
4255 &data
->res
.seq_res
, 1, task
))
4257 rpc_call_start(task
);
4258 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4261 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4263 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4264 nfs4_lock_prepare(task
, calldata
);
4267 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4269 struct nfs4_lockdata
*data
= calldata
;
4271 dprintk("%s: begin!\n", __func__
);
4273 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4276 data
->rpc_status
= task
->tk_status
;
4277 if (data
->arg
.new_lock_owner
!= 0) {
4278 if (data
->rpc_status
== 0)
4279 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4283 if (data
->rpc_status
== 0) {
4284 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
4285 sizeof(data
->lsp
->ls_stateid
.data
));
4286 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4287 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
4290 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4293 static void nfs4_lock_release(void *calldata
)
4295 struct nfs4_lockdata
*data
= calldata
;
4297 dprintk("%s: begin!\n", __func__
);
4298 nfs_free_seqid(data
->arg
.open_seqid
);
4299 if (data
->cancelled
!= 0) {
4300 struct rpc_task
*task
;
4301 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4302 data
->arg
.lock_seqid
);
4304 rpc_put_task_async(task
);
4305 dprintk("%s: cancelling lock!\n", __func__
);
4307 nfs_free_seqid(data
->arg
.lock_seqid
);
4308 nfs4_put_lock_state(data
->lsp
);
4309 put_nfs_open_context(data
->ctx
);
4311 dprintk("%s: done!\n", __func__
);
4314 static const struct rpc_call_ops nfs4_lock_ops
= {
4315 .rpc_call_prepare
= nfs4_lock_prepare
,
4316 .rpc_call_done
= nfs4_lock_done
,
4317 .rpc_release
= nfs4_lock_release
,
4320 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4321 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4322 .rpc_call_done
= nfs4_lock_done
,
4323 .rpc_release
= nfs4_lock_release
,
4326 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4329 case -NFS4ERR_ADMIN_REVOKED
:
4330 case -NFS4ERR_BAD_STATEID
:
4331 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4332 if (new_lock_owner
!= 0 ||
4333 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4334 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4336 case -NFS4ERR_STALE_STATEID
:
4337 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4338 case -NFS4ERR_EXPIRED
:
4339 nfs4_schedule_lease_recovery(server
->nfs_client
);
4343 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4345 struct nfs4_lockdata
*data
;
4346 struct rpc_task
*task
;
4347 struct rpc_message msg
= {
4348 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4349 .rpc_cred
= state
->owner
->so_cred
,
4351 struct rpc_task_setup task_setup_data
= {
4352 .rpc_client
= NFS_CLIENT(state
->inode
),
4353 .rpc_message
= &msg
,
4354 .callback_ops
= &nfs4_lock_ops
,
4355 .workqueue
= nfsiod_workqueue
,
4356 .flags
= RPC_TASK_ASYNC
,
4360 dprintk("%s: begin!\n", __func__
);
4361 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4362 fl
->fl_u
.nfs4_fl
.owner
,
4363 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4367 data
->arg
.block
= 1;
4368 if (recovery_type
> NFS_LOCK_NEW
) {
4369 if (recovery_type
== NFS_LOCK_RECLAIM
)
4370 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4371 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4373 msg
.rpc_argp
= &data
->arg
;
4374 msg
.rpc_resp
= &data
->res
;
4375 task_setup_data
.callback_data
= data
;
4376 task
= rpc_run_task(&task_setup_data
);
4378 return PTR_ERR(task
);
4379 ret
= nfs4_wait_for_completion_rpc_task(task
);
4381 ret
= data
->rpc_status
;
4383 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4384 data
->arg
.new_lock_owner
, ret
);
4386 data
->cancelled
= 1;
4388 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4392 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4394 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4395 struct nfs4_exception exception
= { };
4399 /* Cache the lock if possible... */
4400 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4402 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4403 if (err
!= -NFS4ERR_DELAY
)
4405 nfs4_handle_exception(server
, err
, &exception
);
4406 } while (exception
.retry
);
4410 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4412 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4413 struct nfs4_exception exception
= { };
4416 err
= nfs4_set_lock_state(state
, request
);
4420 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4422 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4426 case -NFS4ERR_GRACE
:
4427 case -NFS4ERR_DELAY
:
4428 nfs4_handle_exception(server
, err
, &exception
);
4431 } while (exception
.retry
);
4436 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4438 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4439 unsigned char fl_flags
= request
->fl_flags
;
4440 int status
= -ENOLCK
;
4442 if ((fl_flags
& FL_POSIX
) &&
4443 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4445 /* Is this a delegated open? */
4446 status
= nfs4_set_lock_state(state
, request
);
4449 request
->fl_flags
|= FL_ACCESS
;
4450 status
= do_vfs_lock(request
->fl_file
, request
);
4453 down_read(&nfsi
->rwsem
);
4454 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4455 /* Yes: cache locks! */
4456 /* ...but avoid races with delegation recall... */
4457 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4458 status
= do_vfs_lock(request
->fl_file
, request
);
4461 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4464 /* Note: we always want to sleep here! */
4465 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4466 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4467 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
4469 up_read(&nfsi
->rwsem
);
4471 request
->fl_flags
= fl_flags
;
4475 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4477 struct nfs4_exception exception
= { };
4481 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4482 if (err
== -NFS4ERR_DENIED
)
4484 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4486 } while (exception
.retry
);
4491 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4493 struct nfs_open_context
*ctx
;
4494 struct nfs4_state
*state
;
4495 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4498 /* verify open state */
4499 ctx
= nfs_file_open_context(filp
);
4502 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4505 if (IS_GETLK(cmd
)) {
4507 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4511 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4514 if (request
->fl_type
== F_UNLCK
) {
4516 return nfs4_proc_unlck(state
, cmd
, request
);
4523 status
= nfs4_proc_setlk(state
, cmd
, request
);
4524 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4526 timeout
= nfs4_set_lock_task_retry(timeout
);
4527 status
= -ERESTARTSYS
;
4530 } while(status
< 0);
4534 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4536 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4537 struct nfs4_exception exception
= { };
4540 err
= nfs4_set_lock_state(state
, fl
);
4544 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4547 printk(KERN_ERR
"%s: unhandled error %d.\n",
4552 case -NFS4ERR_EXPIRED
:
4553 nfs4_schedule_stateid_recovery(server
, state
);
4554 case -NFS4ERR_STALE_CLIENTID
:
4555 case -NFS4ERR_STALE_STATEID
:
4556 nfs4_schedule_lease_recovery(server
->nfs_client
);
4558 case -NFS4ERR_BADSESSION
:
4559 case -NFS4ERR_BADSLOT
:
4560 case -NFS4ERR_BAD_HIGH_SLOT
:
4561 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4562 case -NFS4ERR_DEADSESSION
:
4563 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
4567 * The show must go on: exit, but mark the
4568 * stateid as needing recovery.
4570 case -NFS4ERR_ADMIN_REVOKED
:
4571 case -NFS4ERR_BAD_STATEID
:
4572 case -NFS4ERR_OPENMODE
:
4573 nfs4_schedule_stateid_recovery(server
, state
);
4578 * User RPCSEC_GSS context has expired.
4579 * We cannot recover this stateid now, so
4580 * skip it and allow recovery thread to
4586 case -NFS4ERR_DENIED
:
4587 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4590 case -NFS4ERR_DELAY
:
4593 err
= nfs4_handle_exception(server
, err
, &exception
);
4594 } while (exception
.retry
);
4599 static void nfs4_release_lockowner_release(void *calldata
)
4604 const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4605 .rpc_release
= nfs4_release_lockowner_release
,
4608 void nfs4_release_lockowner(const struct nfs4_lock_state
*lsp
)
4610 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4611 struct nfs_release_lockowner_args
*args
;
4612 struct rpc_message msg
= {
4613 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4616 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
4618 args
= kmalloc(sizeof(*args
), GFP_NOFS
);
4621 args
->lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4622 args
->lock_owner
.id
= lsp
->ls_id
.id
;
4623 args
->lock_owner
.s_dev
= server
->s_dev
;
4624 msg
.rpc_argp
= args
;
4625 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, args
);
4628 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4630 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
4631 const void *buf
, size_t buflen
,
4632 int flags
, int type
)
4634 if (strcmp(key
, "") != 0)
4637 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
4640 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
4641 void *buf
, size_t buflen
, int type
)
4643 if (strcmp(key
, "") != 0)
4646 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
4649 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
4650 size_t list_len
, const char *name
,
4651 size_t name_len
, int type
)
4653 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
4655 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4658 if (list
&& len
<= list_len
)
4659 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
4664 * nfs_fhget will use either the mounted_on_fileid or the fileid
4666 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4668 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
4669 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
4670 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4671 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4674 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4675 NFS_ATTR_FATTR_NLINK
;
4676 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4680 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4681 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4683 struct nfs_server
*server
= NFS_SERVER(dir
);
4685 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4687 struct nfs4_fs_locations_arg args
= {
4688 .dir_fh
= NFS_FH(dir
),
4693 struct nfs4_fs_locations_res res
= {
4694 .fs_locations
= fs_locations
,
4696 struct rpc_message msg
= {
4697 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4703 dprintk("%s: start\n", __func__
);
4705 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
4706 * is not supported */
4707 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
4708 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
4710 bitmask
[0] |= FATTR4_WORD0_FILEID
;
4712 nfs_fattr_init(&fs_locations
->fattr
);
4713 fs_locations
->server
= server
;
4714 fs_locations
->nlocations
= 0;
4715 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4716 dprintk("%s: returned status = %d\n", __func__
, status
);
4720 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4723 struct nfs4_secinfo_arg args
= {
4724 .dir_fh
= NFS_FH(dir
),
4727 struct nfs4_secinfo_res res
= {
4730 struct rpc_message msg
= {
4731 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
4736 dprintk("NFS call secinfo %s\n", name
->name
);
4737 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4738 dprintk("NFS reply secinfo: %d\n", status
);
4742 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4744 struct nfs4_exception exception
= { };
4747 err
= nfs4_handle_exception(NFS_SERVER(dir
),
4748 _nfs4_proc_secinfo(dir
, name
, flavors
),
4750 } while (exception
.retry
);
4754 #ifdef CONFIG_NFS_V4_1
4756 * Check the exchange flags returned by the server for invalid flags, having
4757 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
4760 static int nfs4_check_cl_exchange_flags(u32 flags
)
4762 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
4764 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
4765 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
4767 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
4771 return -NFS4ERR_INVAL
;
4775 * nfs4_proc_exchange_id()
4777 * Since the clientid has expired, all compounds using sessions
4778 * associated with the stale clientid will be returning
4779 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4780 * be in some phase of session reset.
4782 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4784 nfs4_verifier verifier
;
4785 struct nfs41_exchange_id_args args
= {
4787 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
4789 struct nfs41_exchange_id_res res
= {
4793 struct rpc_message msg
= {
4794 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4801 dprintk("--> %s\n", __func__
);
4802 BUG_ON(clp
== NULL
);
4804 p
= (u32
*)verifier
.data
;
4805 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4806 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4807 args
.verifier
= &verifier
;
4809 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4812 init_utsname()->nodename
,
4813 init_utsname()->domainname
,
4814 clp
->cl_rpcclient
->cl_auth
->au_flavor
);
4816 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4818 status
= nfs4_check_cl_exchange_flags(clp
->cl_exchange_flags
);
4819 dprintk("<-- %s status= %d\n", __func__
, status
);
4823 struct nfs4_get_lease_time_data
{
4824 struct nfs4_get_lease_time_args
*args
;
4825 struct nfs4_get_lease_time_res
*res
;
4826 struct nfs_client
*clp
;
4829 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4833 struct nfs4_get_lease_time_data
*data
=
4834 (struct nfs4_get_lease_time_data
*)calldata
;
4836 dprintk("--> %s\n", __func__
);
4837 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4838 /* just setup sequence, do not trigger session recovery
4839 since we're invoked within one */
4840 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4841 &data
->args
->la_seq_args
,
4842 &data
->res
->lr_seq_res
, 0, task
);
4844 BUG_ON(ret
== -EAGAIN
);
4845 rpc_call_start(task
);
4846 dprintk("<-- %s\n", __func__
);
4850 * Called from nfs4_state_manager thread for session setup, so don't recover
4851 * from sequence operation or clientid errors.
4853 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4855 struct nfs4_get_lease_time_data
*data
=
4856 (struct nfs4_get_lease_time_data
*)calldata
;
4858 dprintk("--> %s\n", __func__
);
4859 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
4861 switch (task
->tk_status
) {
4862 case -NFS4ERR_DELAY
:
4863 case -NFS4ERR_GRACE
:
4864 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
4865 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
4866 task
->tk_status
= 0;
4868 case -NFS4ERR_RETRY_UNCACHED_REP
:
4869 nfs_restart_rpc(task
, data
->clp
);
4872 dprintk("<-- %s\n", __func__
);
4875 struct rpc_call_ops nfs4_get_lease_time_ops
= {
4876 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
4877 .rpc_call_done
= nfs4_get_lease_time_done
,
4880 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
4882 struct rpc_task
*task
;
4883 struct nfs4_get_lease_time_args args
;
4884 struct nfs4_get_lease_time_res res
= {
4885 .lr_fsinfo
= fsinfo
,
4887 struct nfs4_get_lease_time_data data
= {
4892 struct rpc_message msg
= {
4893 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
4897 struct rpc_task_setup task_setup
= {
4898 .rpc_client
= clp
->cl_rpcclient
,
4899 .rpc_message
= &msg
,
4900 .callback_ops
= &nfs4_get_lease_time_ops
,
4901 .callback_data
= &data
,
4902 .flags
= RPC_TASK_TIMEOUT
,
4906 dprintk("--> %s\n", __func__
);
4907 task
= rpc_run_task(&task_setup
);
4910 status
= PTR_ERR(task
);
4912 status
= task
->tk_status
;
4915 dprintk("<-- %s return %d\n", __func__
, status
);
4921 * Reset a slot table
4923 static int nfs4_reset_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
4926 struct nfs4_slot
*new = NULL
;
4930 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
4931 max_reqs
, tbl
->max_slots
);
4933 /* Does the newly negotiated max_reqs match the existing slot table? */
4934 if (max_reqs
!= tbl
->max_slots
) {
4936 new = kmalloc(max_reqs
* sizeof(struct nfs4_slot
),
4943 spin_lock(&tbl
->slot_tbl_lock
);
4946 tbl
->max_slots
= max_reqs
;
4948 for (i
= 0; i
< tbl
->max_slots
; ++i
)
4949 tbl
->slots
[i
].seq_nr
= ivalue
;
4950 spin_unlock(&tbl
->slot_tbl_lock
);
4951 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4952 tbl
, tbl
->slots
, tbl
->max_slots
);
4954 dprintk("<-- %s: return %d\n", __func__
, ret
);
4959 * Reset the forechannel and backchannel slot tables
4961 static int nfs4_reset_slot_tables(struct nfs4_session
*session
)
4965 status
= nfs4_reset_slot_table(&session
->fc_slot_table
,
4966 session
->fc_attrs
.max_reqs
, 1);
4970 status
= nfs4_reset_slot_table(&session
->bc_slot_table
,
4971 session
->bc_attrs
.max_reqs
, 0);
4975 /* Destroy the slot table */
4976 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
4978 if (session
->fc_slot_table
.slots
!= NULL
) {
4979 kfree(session
->fc_slot_table
.slots
);
4980 session
->fc_slot_table
.slots
= NULL
;
4982 if (session
->bc_slot_table
.slots
!= NULL
) {
4983 kfree(session
->bc_slot_table
.slots
);
4984 session
->bc_slot_table
.slots
= NULL
;
4990 * Initialize slot table
4992 static int nfs4_init_slot_table(struct nfs4_slot_table
*tbl
,
4993 int max_slots
, int ivalue
)
4995 struct nfs4_slot
*slot
;
4998 BUG_ON(max_slots
> NFS4_MAX_SLOT_TABLE
);
5000 dprintk("--> %s: max_reqs=%u\n", __func__
, max_slots
);
5002 slot
= kcalloc(max_slots
, sizeof(struct nfs4_slot
), GFP_NOFS
);
5007 spin_lock(&tbl
->slot_tbl_lock
);
5008 tbl
->max_slots
= max_slots
;
5010 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
5011 spin_unlock(&tbl
->slot_tbl_lock
);
5012 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5013 tbl
, tbl
->slots
, tbl
->max_slots
);
5015 dprintk("<-- %s: return %d\n", __func__
, ret
);
5020 * Initialize the forechannel and backchannel tables
5022 static int nfs4_init_slot_tables(struct nfs4_session
*session
)
5024 struct nfs4_slot_table
*tbl
;
5027 tbl
= &session
->fc_slot_table
;
5028 if (tbl
->slots
== NULL
) {
5029 status
= nfs4_init_slot_table(tbl
,
5030 session
->fc_attrs
.max_reqs
, 1);
5035 tbl
= &session
->bc_slot_table
;
5036 if (tbl
->slots
== NULL
) {
5037 status
= nfs4_init_slot_table(tbl
,
5038 session
->bc_attrs
.max_reqs
, 0);
5040 nfs4_destroy_slot_tables(session
);
5046 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5048 struct nfs4_session
*session
;
5049 struct nfs4_slot_table
*tbl
;
5051 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5055 tbl
= &session
->fc_slot_table
;
5056 tbl
->highest_used_slotid
= -1;
5057 spin_lock_init(&tbl
->slot_tbl_lock
);
5058 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5059 init_completion(&tbl
->complete
);
5061 tbl
= &session
->bc_slot_table
;
5062 tbl
->highest_used_slotid
= -1;
5063 spin_lock_init(&tbl
->slot_tbl_lock
);
5064 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5065 init_completion(&tbl
->complete
);
5067 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5073 void nfs4_destroy_session(struct nfs4_session
*session
)
5075 nfs4_proc_destroy_session(session
);
5076 dprintk("%s Destroy backchannel for xprt %p\n",
5077 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
5078 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
5079 NFS41_BC_MIN_CALLBACKS
);
5080 nfs4_destroy_slot_tables(session
);
5085 * Initialize the values to be used by the client in CREATE_SESSION
5086 * If nfs4_init_session set the fore channel request and response sizes,
5089 * Set the back channel max_resp_sz_cached to zero to force the client to
5090 * always set csa_cachethis to FALSE because the current implementation
5091 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5093 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5095 struct nfs4_session
*session
= args
->client
->cl_session
;
5096 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5097 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5100 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5102 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5103 /* Fore channel attributes */
5104 args
->fc_attrs
.headerpadsz
= 0;
5105 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5106 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5107 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5108 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
5110 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5111 "max_ops=%u max_reqs=%u\n",
5113 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5114 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5116 /* Back channel attributes */
5117 args
->bc_attrs
.headerpadsz
= 0;
5118 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5119 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5120 args
->bc_attrs
.max_resp_sz_cached
= 0;
5121 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5122 args
->bc_attrs
.max_reqs
= 1;
5124 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5125 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5127 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5128 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5129 args
->bc_attrs
.max_reqs
);
5132 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5134 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5135 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5137 if (rcvd
->headerpadsz
> sent
->headerpadsz
)
5139 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5142 * Our requested max_ops is the minimum we need; we're not
5143 * prepared to break up compounds into smaller pieces than that.
5144 * So, no point even trying to continue if the server won't
5147 if (rcvd
->max_ops
< sent
->max_ops
)
5149 if (rcvd
->max_reqs
== 0)
5154 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5156 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5157 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5159 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5161 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5163 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5165 /* These would render the backchannel useless: */
5166 if (rcvd
->max_ops
== 0)
5168 if (rcvd
->max_reqs
== 0)
5173 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5174 struct nfs4_session
*session
)
5178 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5181 return nfs4_verify_back_channel_attrs(args
, session
);
5184 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
5186 struct nfs4_session
*session
= clp
->cl_session
;
5187 struct nfs41_create_session_args args
= {
5189 .cb_program
= NFS4_CALLBACK
,
5191 struct nfs41_create_session_res res
= {
5194 struct rpc_message msg
= {
5195 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5201 nfs4_init_channel_attrs(&args
);
5202 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5204 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5207 /* Verify the session's negotiated channel_attrs values */
5208 status
= nfs4_verify_channel_attrs(&args
, session
);
5210 /* Increment the clientid slot sequence id */
5218 * Issues a CREATE_SESSION operation to the server.
5219 * It is the responsibility of the caller to verify the session is
5220 * expired before calling this routine.
5222 int nfs4_proc_create_session(struct nfs_client
*clp
)
5226 struct nfs4_session
*session
= clp
->cl_session
;
5228 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5230 status
= _nfs4_proc_create_session(clp
);
5234 /* Init and reset the fore channel */
5235 status
= nfs4_init_slot_tables(session
);
5236 dprintk("slot table initialization returned %d\n", status
);
5239 status
= nfs4_reset_slot_tables(session
);
5240 dprintk("slot table reset returned %d\n", status
);
5244 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5245 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5246 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5248 dprintk("<-- %s\n", __func__
);
5253 * Issue the over-the-wire RPC DESTROY_SESSION.
5254 * The caller must serialize access to this routine.
5256 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
5259 struct rpc_message msg
;
5261 dprintk("--> nfs4_proc_destroy_session\n");
5263 /* session is still being setup */
5264 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5267 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
5268 msg
.rpc_argp
= session
;
5269 msg
.rpc_resp
= NULL
;
5270 msg
.rpc_cred
= NULL
;
5271 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5275 "Got error %d from the server on DESTROY_SESSION. "
5276 "Session has been destroyed regardless...\n", status
);
5278 dprintk("<-- nfs4_proc_destroy_session\n");
5282 int nfs4_init_session(struct nfs_server
*server
)
5284 struct nfs_client
*clp
= server
->nfs_client
;
5285 struct nfs4_session
*session
;
5286 unsigned int rsize
, wsize
;
5289 if (!nfs4_has_session(clp
))
5292 session
= clp
->cl_session
;
5293 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5296 rsize
= server
->rsize
;
5298 rsize
= NFS_MAX_FILE_IO_SIZE
;
5299 wsize
= server
->wsize
;
5301 wsize
= NFS_MAX_FILE_IO_SIZE
;
5303 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5304 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5306 ret
= nfs4_recover_expired_lease(server
);
5308 ret
= nfs4_check_client_ready(clp
);
5312 int nfs4_init_ds_session(struct nfs_client
*clp
)
5314 struct nfs4_session
*session
= clp
->cl_session
;
5317 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5320 ret
= nfs4_client_recover_expired_lease(clp
);
5322 /* Test for the DS role */
5323 if (!is_ds_client(clp
))
5326 ret
= nfs4_check_client_ready(clp
);
5330 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5334 * Renew the cl_session lease.
5336 struct nfs4_sequence_data
{
5337 struct nfs_client
*clp
;
5338 struct nfs4_sequence_args args
;
5339 struct nfs4_sequence_res res
;
5342 static void nfs41_sequence_release(void *data
)
5344 struct nfs4_sequence_data
*calldata
= data
;
5345 struct nfs_client
*clp
= calldata
->clp
;
5347 if (atomic_read(&clp
->cl_count
) > 1)
5348 nfs4_schedule_state_renewal(clp
);
5349 nfs_put_client(clp
);
5353 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5355 switch(task
->tk_status
) {
5356 case -NFS4ERR_DELAY
:
5357 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5360 nfs4_schedule_lease_recovery(clp
);
5365 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5367 struct nfs4_sequence_data
*calldata
= data
;
5368 struct nfs_client
*clp
= calldata
->clp
;
5370 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5373 if (task
->tk_status
< 0) {
5374 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5375 if (atomic_read(&clp
->cl_count
) == 1)
5378 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5379 rpc_restart_call_prepare(task
);
5383 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5385 dprintk("<-- %s\n", __func__
);
5388 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5390 struct nfs4_sequence_data
*calldata
= data
;
5391 struct nfs_client
*clp
= calldata
->clp
;
5392 struct nfs4_sequence_args
*args
;
5393 struct nfs4_sequence_res
*res
;
5395 args
= task
->tk_msg
.rpc_argp
;
5396 res
= task
->tk_msg
.rpc_resp
;
5398 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, 0, task
))
5400 rpc_call_start(task
);
5403 static const struct rpc_call_ops nfs41_sequence_ops
= {
5404 .rpc_call_done
= nfs41_sequence_call_done
,
5405 .rpc_call_prepare
= nfs41_sequence_prepare
,
5406 .rpc_release
= nfs41_sequence_release
,
5409 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5411 struct nfs4_sequence_data
*calldata
;
5412 struct rpc_message msg
= {
5413 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5416 struct rpc_task_setup task_setup_data
= {
5417 .rpc_client
= clp
->cl_rpcclient
,
5418 .rpc_message
= &msg
,
5419 .callback_ops
= &nfs41_sequence_ops
,
5420 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5423 if (!atomic_inc_not_zero(&clp
->cl_count
))
5424 return ERR_PTR(-EIO
);
5425 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5426 if (calldata
== NULL
) {
5427 nfs_put_client(clp
);
5428 return ERR_PTR(-ENOMEM
);
5430 msg
.rpc_argp
= &calldata
->args
;
5431 msg
.rpc_resp
= &calldata
->res
;
5432 calldata
->clp
= clp
;
5433 task_setup_data
.callback_data
= calldata
;
5435 return rpc_run_task(&task_setup_data
);
5438 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5440 struct rpc_task
*task
;
5443 task
= _nfs41_proc_sequence(clp
, cred
);
5445 ret
= PTR_ERR(task
);
5447 rpc_put_task_async(task
);
5448 dprintk("<-- %s status=%d\n", __func__
, ret
);
5452 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5454 struct rpc_task
*task
;
5457 task
= _nfs41_proc_sequence(clp
, cred
);
5459 ret
= PTR_ERR(task
);
5462 ret
= rpc_wait_for_completion_task(task
);
5464 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5466 if (task
->tk_status
== 0)
5467 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5468 ret
= task
->tk_status
;
5472 dprintk("<-- %s status=%d\n", __func__
, ret
);
5476 struct nfs4_reclaim_complete_data
{
5477 struct nfs_client
*clp
;
5478 struct nfs41_reclaim_complete_args arg
;
5479 struct nfs41_reclaim_complete_res res
;
5482 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5484 struct nfs4_reclaim_complete_data
*calldata
= data
;
5486 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5487 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5488 &calldata
->arg
.seq_args
,
5489 &calldata
->res
.seq_res
, 0, task
))
5492 rpc_call_start(task
);
5495 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5497 switch(task
->tk_status
) {
5499 case -NFS4ERR_COMPLETE_ALREADY
:
5500 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5502 case -NFS4ERR_DELAY
:
5503 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5505 case -NFS4ERR_RETRY_UNCACHED_REP
:
5508 nfs4_schedule_lease_recovery(clp
);
5513 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5515 struct nfs4_reclaim_complete_data
*calldata
= data
;
5516 struct nfs_client
*clp
= calldata
->clp
;
5517 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5519 dprintk("--> %s\n", __func__
);
5520 if (!nfs41_sequence_done(task
, res
))
5523 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5524 rpc_restart_call_prepare(task
);
5527 dprintk("<-- %s\n", __func__
);
5530 static void nfs4_free_reclaim_complete_data(void *data
)
5532 struct nfs4_reclaim_complete_data
*calldata
= data
;
5537 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5538 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5539 .rpc_call_done
= nfs4_reclaim_complete_done
,
5540 .rpc_release
= nfs4_free_reclaim_complete_data
,
5544 * Issue a global reclaim complete.
5546 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5548 struct nfs4_reclaim_complete_data
*calldata
;
5549 struct rpc_task
*task
;
5550 struct rpc_message msg
= {
5551 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5553 struct rpc_task_setup task_setup_data
= {
5554 .rpc_client
= clp
->cl_rpcclient
,
5555 .rpc_message
= &msg
,
5556 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5557 .flags
= RPC_TASK_ASYNC
,
5559 int status
= -ENOMEM
;
5561 dprintk("--> %s\n", __func__
);
5562 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5563 if (calldata
== NULL
)
5565 calldata
->clp
= clp
;
5566 calldata
->arg
.one_fs
= 0;
5568 msg
.rpc_argp
= &calldata
->arg
;
5569 msg
.rpc_resp
= &calldata
->res
;
5570 task_setup_data
.callback_data
= calldata
;
5571 task
= rpc_run_task(&task_setup_data
);
5573 status
= PTR_ERR(task
);
5576 status
= nfs4_wait_for_completion_rpc_task(task
);
5578 status
= task
->tk_status
;
5582 dprintk("<-- %s status=%d\n", __func__
, status
);
5587 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
5589 struct nfs4_layoutget
*lgp
= calldata
;
5590 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5592 dprintk("--> %s\n", __func__
);
5593 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
5594 * right now covering the LAYOUTGET we are about to send.
5595 * However, that is not so catastrophic, and there seems
5596 * to be no way to prevent it completely.
5598 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
5599 &lgp
->res
.seq_res
, 0, task
))
5601 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
5602 NFS_I(lgp
->args
.inode
)->layout
,
5603 lgp
->args
.ctx
->state
)) {
5604 rpc_exit(task
, NFS4_OK
);
5607 rpc_call_start(task
);
5610 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
5612 struct nfs4_layoutget
*lgp
= calldata
;
5613 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5615 dprintk("--> %s\n", __func__
);
5617 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
5620 switch (task
->tk_status
) {
5623 case -NFS4ERR_LAYOUTTRYLATER
:
5624 case -NFS4ERR_RECALLCONFLICT
:
5625 task
->tk_status
= -NFS4ERR_DELAY
;
5628 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5629 rpc_restart_call_prepare(task
);
5633 dprintk("<-- %s\n", __func__
);
5636 static void nfs4_layoutget_release(void *calldata
)
5638 struct nfs4_layoutget
*lgp
= calldata
;
5640 dprintk("--> %s\n", __func__
);
5641 put_nfs_open_context(lgp
->args
.ctx
);
5643 dprintk("<-- %s\n", __func__
);
5646 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
5647 .rpc_call_prepare
= nfs4_layoutget_prepare
,
5648 .rpc_call_done
= nfs4_layoutget_done
,
5649 .rpc_release
= nfs4_layoutget_release
,
5652 int nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
)
5654 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5655 struct rpc_task
*task
;
5656 struct rpc_message msg
= {
5657 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
5658 .rpc_argp
= &lgp
->args
,
5659 .rpc_resp
= &lgp
->res
,
5661 struct rpc_task_setup task_setup_data
= {
5662 .rpc_client
= server
->client
,
5663 .rpc_message
= &msg
,
5664 .callback_ops
= &nfs4_layoutget_call_ops
,
5665 .callback_data
= lgp
,
5666 .flags
= RPC_TASK_ASYNC
,
5670 dprintk("--> %s\n", __func__
);
5672 lgp
->res
.layoutp
= &lgp
->args
.layout
;
5673 lgp
->res
.seq_res
.sr_slot
= NULL
;
5674 task
= rpc_run_task(&task_setup_data
);
5676 return PTR_ERR(task
);
5677 status
= nfs4_wait_for_completion_rpc_task(task
);
5679 status
= task
->tk_status
;
5681 status
= pnfs_layout_process(lgp
);
5683 dprintk("<-- %s status=%d\n", __func__
, status
);
5688 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5690 struct nfs4_getdeviceinfo_args args
= {
5693 struct nfs4_getdeviceinfo_res res
= {
5696 struct rpc_message msg
= {
5697 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
5703 dprintk("--> %s\n", __func__
);
5704 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5705 dprintk("<-- %s status=%d\n", __func__
, status
);
5710 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5712 struct nfs4_exception exception
= { };
5716 err
= nfs4_handle_exception(server
,
5717 _nfs4_proc_getdeviceinfo(server
, pdev
),
5719 } while (exception
.retry
);
5722 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
5724 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
5726 struct nfs4_layoutcommit_data
*data
= calldata
;
5727 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
5729 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
5730 &data
->res
.seq_res
, 1, task
))
5732 rpc_call_start(task
);
5736 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
5738 struct nfs4_layoutcommit_data
*data
= calldata
;
5739 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
5741 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5744 switch (task
->tk_status
) { /* Just ignore these failures */
5745 case NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
5746 case NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
5747 case NFS4ERR_BADLAYOUT
: /* no layout */
5748 case NFS4ERR_GRACE
: /* loca_recalim always false */
5749 task
->tk_status
= 0;
5752 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5753 nfs_restart_rpc(task
, server
->nfs_client
);
5757 if (task
->tk_status
== 0)
5758 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
5762 static void nfs4_layoutcommit_release(void *calldata
)
5764 struct nfs4_layoutcommit_data
*data
= calldata
;
5766 /* Matched by references in pnfs_set_layoutcommit */
5767 put_lseg(data
->lseg
);
5768 put_rpccred(data
->cred
);
5772 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
5773 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
5774 .rpc_call_done
= nfs4_layoutcommit_done
,
5775 .rpc_release
= nfs4_layoutcommit_release
,
5779 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
5781 struct rpc_message msg
= {
5782 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
5783 .rpc_argp
= &data
->args
,
5784 .rpc_resp
= &data
->res
,
5785 .rpc_cred
= data
->cred
,
5787 struct rpc_task_setup task_setup_data
= {
5788 .task
= &data
->task
,
5789 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
5790 .rpc_message
= &msg
,
5791 .callback_ops
= &nfs4_layoutcommit_ops
,
5792 .callback_data
= data
,
5793 .flags
= RPC_TASK_ASYNC
,
5795 struct rpc_task
*task
;
5798 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
5799 "lbw: %llu inode %lu\n",
5800 data
->task
.tk_pid
, sync
,
5801 data
->args
.lastbytewritten
,
5802 data
->args
.inode
->i_ino
);
5804 task
= rpc_run_task(&task_setup_data
);
5806 return PTR_ERR(task
);
5809 status
= nfs4_wait_for_completion_rpc_task(task
);
5812 status
= task
->tk_status
;
5814 dprintk("%s: status %d\n", __func__
, status
);
5818 #endif /* CONFIG_NFS_V4_1 */
5820 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
5821 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5822 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5823 .recover_open
= nfs4_open_reclaim
,
5824 .recover_lock
= nfs4_lock_reclaim
,
5825 .establish_clid
= nfs4_init_clientid
,
5826 .get_clid_cred
= nfs4_get_setclientid_cred
,
5829 #if defined(CONFIG_NFS_V4_1)
5830 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
5831 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5832 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5833 .recover_open
= nfs4_open_reclaim
,
5834 .recover_lock
= nfs4_lock_reclaim
,
5835 .establish_clid
= nfs41_init_clientid
,
5836 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5837 .reclaim_complete
= nfs41_proc_reclaim_complete
,
5839 #endif /* CONFIG_NFS_V4_1 */
5841 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
5842 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5843 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5844 .recover_open
= nfs4_open_expired
,
5845 .recover_lock
= nfs4_lock_expired
,
5846 .establish_clid
= nfs4_init_clientid
,
5847 .get_clid_cred
= nfs4_get_setclientid_cred
,
5850 #if defined(CONFIG_NFS_V4_1)
5851 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
5852 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5853 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5854 .recover_open
= nfs4_open_expired
,
5855 .recover_lock
= nfs4_lock_expired
,
5856 .establish_clid
= nfs41_init_clientid
,
5857 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5859 #endif /* CONFIG_NFS_V4_1 */
5861 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
5862 .sched_state_renewal
= nfs4_proc_async_renew
,
5863 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
5864 .renew_lease
= nfs4_proc_renew
,
5867 #if defined(CONFIG_NFS_V4_1)
5868 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
5869 .sched_state_renewal
= nfs41_proc_async_sequence
,
5870 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
5871 .renew_lease
= nfs4_proc_sequence
,
5875 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
5877 .call_sync
= _nfs4_call_sync
,
5878 .validate_stateid
= nfs4_validate_delegation_stateid
,
5879 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
5880 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
5881 .state_renewal_ops
= &nfs40_state_renewal_ops
,
5884 #if defined(CONFIG_NFS_V4_1)
5885 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
5887 .call_sync
= _nfs4_call_sync_session
,
5888 .validate_stateid
= nfs41_validate_delegation_stateid
,
5889 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
5890 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
5891 .state_renewal_ops
= &nfs41_state_renewal_ops
,
5895 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
5896 [0] = &nfs_v4_0_minor_ops
,
5897 #if defined(CONFIG_NFS_V4_1)
5898 [1] = &nfs_v4_1_minor_ops
,
5902 static const struct inode_operations nfs4_file_inode_operations
= {
5903 .permission
= nfs_permission
,
5904 .getattr
= nfs_getattr
,
5905 .setattr
= nfs_setattr
,
5906 .getxattr
= generic_getxattr
,
5907 .setxattr
= generic_setxattr
,
5908 .listxattr
= generic_listxattr
,
5909 .removexattr
= generic_removexattr
,
5912 const struct nfs_rpc_ops nfs_v4_clientops
= {
5913 .version
= 4, /* protocol version */
5914 .dentry_ops
= &nfs4_dentry_operations
,
5915 .dir_inode_ops
= &nfs4_dir_inode_operations
,
5916 .file_inode_ops
= &nfs4_file_inode_operations
,
5917 .getroot
= nfs4_proc_get_root
,
5918 .getattr
= nfs4_proc_getattr
,
5919 .setattr
= nfs4_proc_setattr
,
5920 .lookupfh
= nfs4_proc_lookupfh
,
5921 .lookup
= nfs4_proc_lookup
,
5922 .access
= nfs4_proc_access
,
5923 .readlink
= nfs4_proc_readlink
,
5924 .create
= nfs4_proc_create
,
5925 .remove
= nfs4_proc_remove
,
5926 .unlink_setup
= nfs4_proc_unlink_setup
,
5927 .unlink_done
= nfs4_proc_unlink_done
,
5928 .rename
= nfs4_proc_rename
,
5929 .rename_setup
= nfs4_proc_rename_setup
,
5930 .rename_done
= nfs4_proc_rename_done
,
5931 .link
= nfs4_proc_link
,
5932 .symlink
= nfs4_proc_symlink
,
5933 .mkdir
= nfs4_proc_mkdir
,
5934 .rmdir
= nfs4_proc_remove
,
5935 .readdir
= nfs4_proc_readdir
,
5936 .mknod
= nfs4_proc_mknod
,
5937 .statfs
= nfs4_proc_statfs
,
5938 .fsinfo
= nfs4_proc_fsinfo
,
5939 .pathconf
= nfs4_proc_pathconf
,
5940 .set_capabilities
= nfs4_server_capabilities
,
5941 .decode_dirent
= nfs4_decode_dirent
,
5942 .read_setup
= nfs4_proc_read_setup
,
5943 .read_done
= nfs4_read_done
,
5944 .write_setup
= nfs4_proc_write_setup
,
5945 .write_done
= nfs4_write_done
,
5946 .commit_setup
= nfs4_proc_commit_setup
,
5947 .commit_done
= nfs4_commit_done
,
5948 .lock
= nfs4_proc_lock
,
5949 .clear_acl_cache
= nfs4_zap_acl_attr
,
5950 .close_context
= nfs4_close_context
,
5951 .open_context
= nfs4_atomic_open
,
5952 .init_client
= nfs4_init_client
,
5953 .secinfo
= nfs4_proc_secinfo
,
5956 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
5957 .prefix
= XATTR_NAME_NFSV4_ACL
,
5958 .list
= nfs4_xattr_list_nfs4_acl
,
5959 .get
= nfs4_xattr_get_nfs4_acl
,
5960 .set
= nfs4_xattr_set_nfs4_acl
,
5963 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
5964 &nfs4_xattr_nfs4_acl_handler
,