4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/slab.h>
43 #include <linux/sunrpc/clnt.h>
44 #include <linux/sunrpc/gss_api.h>
45 #include <linux/nfs.h>
46 #include <linux/nfs4.h>
47 #include <linux/nfs_fs.h>
48 #include <linux/nfs_page.h>
49 #include <linux/nfs_mount.h>
50 #include <linux/namei.h>
51 #include <linux/mount.h>
52 #include <linux/module.h>
53 #include <linux/sunrpc/bc_xprt.h>
54 #include <linux/xattr.h>
55 #include <linux/utsname.h>
58 #include "delegation.h"
64 #define NFSDBG_FACILITY NFSDBG_PROC
66 #define NFS4_POLL_RETRY_MIN (HZ/10)
67 #define NFS4_POLL_RETRY_MAX (15*HZ)
69 #define NFS4_MAX_LOOP_ON_RECOVER (10)
72 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
73 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
74 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
75 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
76 static int _nfs4_proc_lookup(struct rpc_clnt
*client
, struct inode
*dir
,
77 const struct qstr
*name
, struct nfs_fh
*fhandle
,
78 struct nfs_fattr
*fattr
);
79 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
80 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
81 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
82 struct nfs4_state
*state
);
84 /* Prevent leaks of NFSv4 errors into userland */
85 static int nfs4_map_errors(int err
)
90 case -NFS4ERR_RESOURCE
:
92 case -NFS4ERR_WRONGSEC
:
94 case -NFS4ERR_BADOWNER
:
95 case -NFS4ERR_BADNAME
:
98 dprintk("%s could not handle NFSv4 error %d\n",
106 * This is our standard bitmap for GETATTR requests.
108 const u32 nfs4_fattr_bitmap
[2] = {
110 | FATTR4_WORD0_CHANGE
113 | FATTR4_WORD0_FILEID
,
115 | FATTR4_WORD1_NUMLINKS
117 | FATTR4_WORD1_OWNER_GROUP
118 | FATTR4_WORD1_RAWDEV
119 | FATTR4_WORD1_SPACE_USED
120 | FATTR4_WORD1_TIME_ACCESS
121 | FATTR4_WORD1_TIME_METADATA
122 | FATTR4_WORD1_TIME_MODIFY
125 const u32 nfs4_statfs_bitmap
[2] = {
126 FATTR4_WORD0_FILES_AVAIL
127 | FATTR4_WORD0_FILES_FREE
128 | FATTR4_WORD0_FILES_TOTAL
,
129 FATTR4_WORD1_SPACE_AVAIL
130 | FATTR4_WORD1_SPACE_FREE
131 | FATTR4_WORD1_SPACE_TOTAL
134 const u32 nfs4_pathconf_bitmap
[2] = {
136 | FATTR4_WORD0_MAXNAME
,
140 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
141 | FATTR4_WORD0_MAXREAD
142 | FATTR4_WORD0_MAXWRITE
143 | FATTR4_WORD0_LEASE_TIME
,
144 FATTR4_WORD1_TIME_DELTA
145 | FATTR4_WORD1_FS_LAYOUT_TYPES
148 const u32 nfs4_fs_locations_bitmap
[2] = {
150 | FATTR4_WORD0_CHANGE
153 | FATTR4_WORD0_FILEID
154 | FATTR4_WORD0_FS_LOCATIONS
,
156 | FATTR4_WORD1_NUMLINKS
158 | FATTR4_WORD1_OWNER_GROUP
159 | FATTR4_WORD1_RAWDEV
160 | FATTR4_WORD1_SPACE_USED
161 | FATTR4_WORD1_TIME_ACCESS
162 | FATTR4_WORD1_TIME_METADATA
163 | FATTR4_WORD1_TIME_MODIFY
164 | FATTR4_WORD1_MOUNTED_ON_FILEID
167 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
168 struct nfs4_readdir_arg
*readdir
)
172 BUG_ON(readdir
->count
< 80);
174 readdir
->cookie
= cookie
;
175 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
180 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
185 * NFSv4 servers do not return entries for '.' and '..'
186 * Therefore, we fake these entries here. We let '.'
187 * have cookie 0 and '..' have cookie 1. Note that
188 * when talking to the server, we always send cookie 0
191 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
194 *p
++ = xdr_one
; /* next */
195 *p
++ = xdr_zero
; /* cookie, first word */
196 *p
++ = xdr_one
; /* cookie, second word */
197 *p
++ = xdr_one
; /* entry len */
198 memcpy(p
, ".\0\0\0", 4); /* entry */
200 *p
++ = xdr_one
; /* bitmap length */
201 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
202 *p
++ = htonl(8); /* attribute buffer length */
203 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
206 *p
++ = xdr_one
; /* next */
207 *p
++ = xdr_zero
; /* cookie, first word */
208 *p
++ = xdr_two
; /* cookie, second word */
209 *p
++ = xdr_two
; /* entry len */
210 memcpy(p
, "..\0\0", 4); /* entry */
212 *p
++ = xdr_one
; /* bitmap length */
213 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
214 *p
++ = htonl(8); /* attribute buffer length */
215 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
217 readdir
->pgbase
= (char *)p
- (char *)start
;
218 readdir
->count
-= readdir
->pgbase
;
219 kunmap_atomic(start
, KM_USER0
);
222 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
228 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
229 nfs_wait_bit_killable
, TASK_KILLABLE
);
233 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
240 *timeout
= NFS4_POLL_RETRY_MIN
;
241 if (*timeout
> NFS4_POLL_RETRY_MAX
)
242 *timeout
= NFS4_POLL_RETRY_MAX
;
243 schedule_timeout_killable(*timeout
);
244 if (fatal_signal_pending(current
))
250 /* This is the error handling routine for processes that are allowed
253 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
255 struct nfs_client
*clp
= server
->nfs_client
;
256 struct nfs4_state
*state
= exception
->state
;
259 exception
->retry
= 0;
263 case -NFS4ERR_ADMIN_REVOKED
:
264 case -NFS4ERR_BAD_STATEID
:
265 case -NFS4ERR_OPENMODE
:
268 nfs4_schedule_stateid_recovery(server
, state
);
269 goto wait_on_recovery
;
270 case -NFS4ERR_STALE_STATEID
:
271 case -NFS4ERR_STALE_CLIENTID
:
272 case -NFS4ERR_EXPIRED
:
273 nfs4_schedule_lease_recovery(clp
);
274 goto wait_on_recovery
;
275 #if defined(CONFIG_NFS_V4_1)
276 case -NFS4ERR_BADSESSION
:
277 case -NFS4ERR_BADSLOT
:
278 case -NFS4ERR_BAD_HIGH_SLOT
:
279 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
280 case -NFS4ERR_DEADSESSION
:
281 case -NFS4ERR_SEQ_FALSE_RETRY
:
282 case -NFS4ERR_SEQ_MISORDERED
:
283 dprintk("%s ERROR: %d Reset session\n", __func__
,
285 nfs4_schedule_session_recovery(clp
->cl_session
);
286 exception
->retry
= 1;
288 #endif /* defined(CONFIG_NFS_V4_1) */
289 case -NFS4ERR_FILE_OPEN
:
290 if (exception
->timeout
> HZ
) {
291 /* We have retried a decent amount, time to
300 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
303 case -NFS4ERR_RETRY_UNCACHED_REP
:
304 case -NFS4ERR_OLD_STATEID
:
305 exception
->retry
= 1;
307 case -NFS4ERR_BADOWNER
:
308 /* The following works around a Linux server bug! */
309 case -NFS4ERR_BADNAME
:
310 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
311 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
312 exception
->retry
= 1;
313 printk(KERN_WARNING
"NFS: v4 server %s "
314 "does not accept raw "
316 "Reenabling the idmapper.\n",
317 server
->nfs_client
->cl_hostname
);
320 /* We failed to handle the error */
321 return nfs4_map_errors(ret
);
323 ret
= nfs4_wait_clnt_recover(clp
);
325 exception
->retry
= 1;
330 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
332 spin_lock(&clp
->cl_lock
);
333 if (time_before(clp
->cl_last_renewal
,timestamp
))
334 clp
->cl_last_renewal
= timestamp
;
335 spin_unlock(&clp
->cl_lock
);
338 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
340 do_renew_lease(server
->nfs_client
, timestamp
);
343 #if defined(CONFIG_NFS_V4_1)
346 * nfs4_free_slot - free a slot and efficiently update slot table.
348 * freeing a slot is trivially done by clearing its respective bit
350 * If the freed slotid equals highest_used_slotid we want to update it
351 * so that the server would be able to size down the slot table if needed,
352 * otherwise we know that the highest_used_slotid is still in use.
353 * When updating highest_used_slotid there may be "holes" in the bitmap
354 * so we need to scan down from highest_used_slotid to 0 looking for the now
355 * highest slotid in use.
356 * If none found, highest_used_slotid is set to -1.
358 * Must be called while holding tbl->slot_tbl_lock
361 nfs4_free_slot(struct nfs4_slot_table
*tbl
, struct nfs4_slot
*free_slot
)
363 int free_slotid
= free_slot
- tbl
->slots
;
364 int slotid
= free_slotid
;
366 BUG_ON(slotid
< 0 || slotid
>= NFS4_MAX_SLOT_TABLE
);
367 /* clear used bit in bitmap */
368 __clear_bit(slotid
, tbl
->used_slots
);
370 /* update highest_used_slotid when it is freed */
371 if (slotid
== tbl
->highest_used_slotid
) {
372 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
373 if (slotid
< tbl
->max_slots
)
374 tbl
->highest_used_slotid
= slotid
;
376 tbl
->highest_used_slotid
= -1;
378 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
379 free_slotid
, tbl
->highest_used_slotid
);
383 * Signal state manager thread if session fore channel is drained
385 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
387 struct rpc_task
*task
;
389 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
390 task
= rpc_wake_up_next(&ses
->fc_slot_table
.slot_tbl_waitq
);
392 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
396 if (ses
->fc_slot_table
.highest_used_slotid
!= -1)
399 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
400 complete(&ses
->fc_slot_table
.complete
);
404 * Signal state manager thread if session back channel is drained
406 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
408 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
409 ses
->bc_slot_table
.highest_used_slotid
!= -1)
411 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
412 complete(&ses
->bc_slot_table
.complete
);
415 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
417 struct nfs4_slot_table
*tbl
;
419 tbl
= &res
->sr_session
->fc_slot_table
;
421 /* just wake up the next guy waiting since
422 * we may have not consumed a slot after all */
423 dprintk("%s: No slot\n", __func__
);
427 spin_lock(&tbl
->slot_tbl_lock
);
428 nfs4_free_slot(tbl
, res
->sr_slot
);
429 nfs4_check_drain_fc_complete(res
->sr_session
);
430 spin_unlock(&tbl
->slot_tbl_lock
);
434 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
436 unsigned long timestamp
;
437 struct nfs_client
*clp
;
440 * sr_status remains 1 if an RPC level error occurred. The server
441 * may or may not have processed the sequence operation..
442 * Proceed as if the server received and processed the sequence
445 if (res
->sr_status
== 1)
446 res
->sr_status
= NFS_OK
;
448 /* don't increment the sequence number if the task wasn't sent */
449 if (!RPC_WAS_SENT(task
))
452 /* Check the SEQUENCE operation status */
453 switch (res
->sr_status
) {
455 /* Update the slot's sequence and clientid lease timer */
456 ++res
->sr_slot
->seq_nr
;
457 timestamp
= res
->sr_renewal_time
;
458 clp
= res
->sr_session
->clp
;
459 do_renew_lease(clp
, timestamp
);
460 /* Check sequence flags */
461 if (res
->sr_status_flags
!= 0)
462 nfs4_schedule_lease_recovery(clp
);
465 /* The server detected a resend of the RPC call and
466 * returned NFS4ERR_DELAY as per Section 2.10.6.2
469 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
471 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
472 res
->sr_slot
->seq_nr
);
475 /* Just update the slot sequence no. */
476 ++res
->sr_slot
->seq_nr
;
479 /* The session may be reset by one of the error handlers. */
480 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
481 nfs41_sequence_free_slot(res
);
484 if (!rpc_restart_call(task
))
486 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
490 static int nfs4_sequence_done(struct rpc_task
*task
,
491 struct nfs4_sequence_res
*res
)
493 if (res
->sr_session
== NULL
)
495 return nfs41_sequence_done(task
, res
);
499 * nfs4_find_slot - efficiently look for a free slot
501 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
502 * If found, we mark the slot as used, update the highest_used_slotid,
503 * and respectively set up the sequence operation args.
504 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
506 * Note: must be called with under the slot_tbl_lock.
509 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
512 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
513 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
515 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
516 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
518 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
519 if (slotid
>= tbl
->max_slots
)
521 __set_bit(slotid
, tbl
->used_slots
);
522 if (slotid
> tbl
->highest_used_slotid
)
523 tbl
->highest_used_slotid
= slotid
;
526 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
527 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
531 int nfs41_setup_sequence(struct nfs4_session
*session
,
532 struct nfs4_sequence_args
*args
,
533 struct nfs4_sequence_res
*res
,
535 struct rpc_task
*task
)
537 struct nfs4_slot
*slot
;
538 struct nfs4_slot_table
*tbl
;
541 dprintk("--> %s\n", __func__
);
542 /* slot already allocated? */
543 if (res
->sr_slot
!= NULL
)
546 tbl
= &session
->fc_slot_table
;
548 spin_lock(&tbl
->slot_tbl_lock
);
549 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
550 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
552 * The state manager will wait until the slot table is empty.
553 * Schedule the reset thread
555 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
556 spin_unlock(&tbl
->slot_tbl_lock
);
557 dprintk("%s Schedule Session Reset\n", __func__
);
561 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
562 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
563 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
564 spin_unlock(&tbl
->slot_tbl_lock
);
565 dprintk("%s enforce FIFO order\n", __func__
);
569 slotid
= nfs4_find_slot(tbl
);
570 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
571 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
572 spin_unlock(&tbl
->slot_tbl_lock
);
573 dprintk("<-- %s: no free slots\n", __func__
);
576 spin_unlock(&tbl
->slot_tbl_lock
);
578 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
579 slot
= tbl
->slots
+ slotid
;
580 args
->sa_session
= session
;
581 args
->sa_slotid
= slotid
;
582 args
->sa_cache_this
= cache_reply
;
584 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
586 res
->sr_session
= session
;
588 res
->sr_renewal_time
= jiffies
;
589 res
->sr_status_flags
= 0;
591 * sr_status is only set in decode_sequence, and so will remain
592 * set to 1 if an rpc level failure occurs.
597 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
599 int nfs4_setup_sequence(const struct nfs_server
*server
,
600 struct nfs4_sequence_args
*args
,
601 struct nfs4_sequence_res
*res
,
603 struct rpc_task
*task
)
605 struct nfs4_session
*session
= nfs4_get_session(server
);
608 if (session
== NULL
) {
609 args
->sa_session
= NULL
;
610 res
->sr_session
= NULL
;
614 dprintk("--> %s clp %p session %p sr_slot %td\n",
615 __func__
, session
->clp
, session
, res
->sr_slot
?
616 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
618 ret
= nfs41_setup_sequence(session
, args
, res
, cache_reply
,
621 dprintk("<-- %s status=%d\n", __func__
, ret
);
625 struct nfs41_call_sync_data
{
626 const struct nfs_server
*seq_server
;
627 struct nfs4_sequence_args
*seq_args
;
628 struct nfs4_sequence_res
*seq_res
;
632 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
634 struct nfs41_call_sync_data
*data
= calldata
;
636 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
638 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
639 data
->seq_res
, data
->cache_reply
, task
))
641 rpc_call_start(task
);
644 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
646 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
647 nfs41_call_sync_prepare(task
, calldata
);
650 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
652 struct nfs41_call_sync_data
*data
= calldata
;
654 nfs41_sequence_done(task
, data
->seq_res
);
657 struct rpc_call_ops nfs41_call_sync_ops
= {
658 .rpc_call_prepare
= nfs41_call_sync_prepare
,
659 .rpc_call_done
= nfs41_call_sync_done
,
662 struct rpc_call_ops nfs41_call_priv_sync_ops
= {
663 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
664 .rpc_call_done
= nfs41_call_sync_done
,
667 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
668 struct nfs_server
*server
,
669 struct rpc_message
*msg
,
670 struct nfs4_sequence_args
*args
,
671 struct nfs4_sequence_res
*res
,
676 struct rpc_task
*task
;
677 struct nfs41_call_sync_data data
= {
678 .seq_server
= server
,
681 .cache_reply
= cache_reply
,
683 struct rpc_task_setup task_setup
= {
686 .callback_ops
= &nfs41_call_sync_ops
,
687 .callback_data
= &data
692 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
693 task
= rpc_run_task(&task_setup
);
697 ret
= task
->tk_status
;
703 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
704 struct nfs_server
*server
,
705 struct rpc_message
*msg
,
706 struct nfs4_sequence_args
*args
,
707 struct nfs4_sequence_res
*res
,
710 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, cache_reply
, 0);
714 static int nfs4_sequence_done(struct rpc_task
*task
,
715 struct nfs4_sequence_res
*res
)
719 #endif /* CONFIG_NFS_V4_1 */
721 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
722 struct nfs_server
*server
,
723 struct rpc_message
*msg
,
724 struct nfs4_sequence_args
*args
,
725 struct nfs4_sequence_res
*res
,
728 args
->sa_session
= res
->sr_session
= NULL
;
729 return rpc_call_sync(clnt
, msg
, 0);
733 int nfs4_call_sync(struct rpc_clnt
*clnt
,
734 struct nfs_server
*server
,
735 struct rpc_message
*msg
,
736 struct nfs4_sequence_args
*args
,
737 struct nfs4_sequence_res
*res
,
740 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
741 args
, res
, cache_reply
);
744 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
746 struct nfs_inode
*nfsi
= NFS_I(dir
);
748 spin_lock(&dir
->i_lock
);
749 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
750 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
751 nfs_force_lookup_revalidate(dir
);
752 nfsi
->change_attr
= cinfo
->after
;
753 spin_unlock(&dir
->i_lock
);
756 struct nfs4_opendata
{
758 struct nfs_openargs o_arg
;
759 struct nfs_openres o_res
;
760 struct nfs_open_confirmargs c_arg
;
761 struct nfs_open_confirmres c_res
;
762 struct nfs_fattr f_attr
;
763 struct nfs_fattr dir_attr
;
766 struct nfs4_state_owner
*owner
;
767 struct nfs4_state
*state
;
769 unsigned long timestamp
;
770 unsigned int rpc_done
: 1;
776 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
778 p
->o_res
.f_attr
= &p
->f_attr
;
779 p
->o_res
.dir_attr
= &p
->dir_attr
;
780 p
->o_res
.seqid
= p
->o_arg
.seqid
;
781 p
->c_res
.seqid
= p
->c_arg
.seqid
;
782 p
->o_res
.server
= p
->o_arg
.server
;
783 nfs_fattr_init(&p
->f_attr
);
784 nfs_fattr_init(&p
->dir_attr
);
787 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
788 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
789 const struct iattr
*attrs
,
792 struct dentry
*parent
= dget_parent(path
->dentry
);
793 struct inode
*dir
= parent
->d_inode
;
794 struct nfs_server
*server
= NFS_SERVER(dir
);
795 struct nfs4_opendata
*p
;
797 p
= kzalloc(sizeof(*p
), gfp_mask
);
800 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
801 if (p
->o_arg
.seqid
== NULL
)
807 atomic_inc(&sp
->so_count
);
808 p
->o_arg
.fh
= NFS_FH(dir
);
809 p
->o_arg
.open_flags
= flags
;
810 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
811 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
812 p
->o_arg
.id
= sp
->so_owner_id
.id
;
813 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
814 p
->o_arg
.server
= server
;
815 p
->o_arg
.bitmask
= server
->attr_bitmask
;
816 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
817 if (flags
& O_CREAT
) {
820 p
->o_arg
.u
.attrs
= &p
->attrs
;
821 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
822 s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
826 p
->c_arg
.fh
= &p
->o_res
.fh
;
827 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
828 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
829 nfs4_init_opendata_res(p
);
839 static void nfs4_opendata_free(struct kref
*kref
)
841 struct nfs4_opendata
*p
= container_of(kref
,
842 struct nfs4_opendata
, kref
);
844 nfs_free_seqid(p
->o_arg
.seqid
);
845 if (p
->state
!= NULL
)
846 nfs4_put_open_state(p
->state
);
847 nfs4_put_state_owner(p
->owner
);
853 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
856 kref_put(&p
->kref
, nfs4_opendata_free
);
859 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
863 ret
= rpc_wait_for_completion_task(task
);
867 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
871 if (open_mode
& O_EXCL
)
873 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
875 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
876 && state
->n_rdonly
!= 0;
879 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
880 && state
->n_wronly
!= 0;
882 case FMODE_READ
|FMODE_WRITE
:
883 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
884 && state
->n_rdwr
!= 0;
890 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
892 if ((delegation
->type
& fmode
) != fmode
)
894 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
896 nfs_mark_delegation_referenced(delegation
);
900 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
909 case FMODE_READ
|FMODE_WRITE
:
912 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
915 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
917 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
918 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
919 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
922 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
925 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
927 case FMODE_READ
|FMODE_WRITE
:
928 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
932 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
934 write_seqlock(&state
->seqlock
);
935 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
936 write_sequnlock(&state
->seqlock
);
939 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
942 * Protect the call to nfs4_state_set_mode_locked and
943 * serialise the stateid update
945 write_seqlock(&state
->seqlock
);
946 if (deleg_stateid
!= NULL
) {
947 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
948 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
950 if (open_stateid
!= NULL
)
951 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
952 write_sequnlock(&state
->seqlock
);
953 spin_lock(&state
->owner
->so_lock
);
954 update_open_stateflags(state
, fmode
);
955 spin_unlock(&state
->owner
->so_lock
);
958 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
960 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
961 struct nfs_delegation
*deleg_cur
;
964 fmode
&= (FMODE_READ
|FMODE_WRITE
);
967 deleg_cur
= rcu_dereference(nfsi
->delegation
);
968 if (deleg_cur
== NULL
)
971 spin_lock(&deleg_cur
->lock
);
972 if (nfsi
->delegation
!= deleg_cur
||
973 (deleg_cur
->type
& fmode
) != fmode
)
974 goto no_delegation_unlock
;
976 if (delegation
== NULL
)
977 delegation
= &deleg_cur
->stateid
;
978 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
979 goto no_delegation_unlock
;
981 nfs_mark_delegation_referenced(deleg_cur
);
982 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
984 no_delegation_unlock
:
985 spin_unlock(&deleg_cur
->lock
);
989 if (!ret
&& open_stateid
!= NULL
) {
990 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
998 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1000 struct nfs_delegation
*delegation
;
1003 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1004 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1009 nfs_inode_return_delegation(inode
);
1012 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1014 struct nfs4_state
*state
= opendata
->state
;
1015 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1016 struct nfs_delegation
*delegation
;
1017 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
1018 fmode_t fmode
= opendata
->o_arg
.fmode
;
1019 nfs4_stateid stateid
;
1023 if (can_open_cached(state
, fmode
, open_mode
)) {
1024 spin_lock(&state
->owner
->so_lock
);
1025 if (can_open_cached(state
, fmode
, open_mode
)) {
1026 update_open_stateflags(state
, fmode
);
1027 spin_unlock(&state
->owner
->so_lock
);
1028 goto out_return_state
;
1030 spin_unlock(&state
->owner
->so_lock
);
1033 delegation
= rcu_dereference(nfsi
->delegation
);
1034 if (delegation
== NULL
||
1035 !can_open_delegated(delegation
, fmode
)) {
1039 /* Save the delegation */
1040 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
1042 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1047 /* Try to update the stateid using the delegation */
1048 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1049 goto out_return_state
;
1052 return ERR_PTR(ret
);
1054 atomic_inc(&state
->count
);
1058 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1060 struct inode
*inode
;
1061 struct nfs4_state
*state
= NULL
;
1062 struct nfs_delegation
*delegation
;
1065 if (!data
->rpc_done
) {
1066 state
= nfs4_try_open_cached(data
);
1071 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1073 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1074 ret
= PTR_ERR(inode
);
1078 state
= nfs4_get_open_state(inode
, data
->owner
);
1081 if (data
->o_res
.delegation_type
!= 0) {
1082 int delegation_flags
= 0;
1085 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1087 delegation_flags
= delegation
->flags
;
1089 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1090 nfs_inode_set_delegation(state
->inode
,
1091 data
->owner
->so_cred
,
1094 nfs_inode_reclaim_delegation(state
->inode
,
1095 data
->owner
->so_cred
,
1099 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1107 return ERR_PTR(ret
);
1110 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1112 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1113 struct nfs_open_context
*ctx
;
1115 spin_lock(&state
->inode
->i_lock
);
1116 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1117 if (ctx
->state
!= state
)
1119 get_nfs_open_context(ctx
);
1120 spin_unlock(&state
->inode
->i_lock
);
1123 spin_unlock(&state
->inode
->i_lock
);
1124 return ERR_PTR(-ENOENT
);
1127 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1129 struct nfs4_opendata
*opendata
;
1131 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1132 if (opendata
== NULL
)
1133 return ERR_PTR(-ENOMEM
);
1134 opendata
->state
= state
;
1135 atomic_inc(&state
->count
);
1139 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1141 struct nfs4_state
*newstate
;
1144 opendata
->o_arg
.open_flags
= 0;
1145 opendata
->o_arg
.fmode
= fmode
;
1146 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1147 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1148 nfs4_init_opendata_res(opendata
);
1149 ret
= _nfs4_recover_proc_open(opendata
);
1152 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1153 if (IS_ERR(newstate
))
1154 return PTR_ERR(newstate
);
1155 nfs4_close_state(&opendata
->path
, newstate
, fmode
);
1160 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1162 struct nfs4_state
*newstate
;
1165 /* memory barrier prior to reading state->n_* */
1166 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1168 if (state
->n_rdwr
!= 0) {
1169 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1170 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1173 if (newstate
!= state
)
1176 if (state
->n_wronly
!= 0) {
1177 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1178 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1181 if (newstate
!= state
)
1184 if (state
->n_rdonly
!= 0) {
1185 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1186 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1189 if (newstate
!= state
)
1193 * We may have performed cached opens for all three recoveries.
1194 * Check if we need to update the current stateid.
1196 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1197 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1198 write_seqlock(&state
->seqlock
);
1199 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1200 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1201 write_sequnlock(&state
->seqlock
);
1208 * reclaim state on the server after a reboot.
1210 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1212 struct nfs_delegation
*delegation
;
1213 struct nfs4_opendata
*opendata
;
1214 fmode_t delegation_type
= 0;
1217 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1218 if (IS_ERR(opendata
))
1219 return PTR_ERR(opendata
);
1220 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1221 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1223 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1224 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1225 delegation_type
= delegation
->type
;
1227 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1228 status
= nfs4_open_recover(opendata
, state
);
1229 nfs4_opendata_put(opendata
);
1233 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1235 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1236 struct nfs4_exception exception
= { };
1239 err
= _nfs4_do_open_reclaim(ctx
, state
);
1240 if (err
!= -NFS4ERR_DELAY
)
1242 nfs4_handle_exception(server
, err
, &exception
);
1243 } while (exception
.retry
);
1247 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1249 struct nfs_open_context
*ctx
;
1252 ctx
= nfs4_state_find_open_context(state
);
1254 return PTR_ERR(ctx
);
1255 ret
= nfs4_do_open_reclaim(ctx
, state
);
1256 put_nfs_open_context(ctx
);
1260 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1262 struct nfs4_opendata
*opendata
;
1265 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1266 if (IS_ERR(opendata
))
1267 return PTR_ERR(opendata
);
1268 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1269 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1270 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1271 ret
= nfs4_open_recover(opendata
, state
);
1272 nfs4_opendata_put(opendata
);
1276 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1278 struct nfs4_exception exception
= { };
1279 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1282 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1288 case -NFS4ERR_BADSESSION
:
1289 case -NFS4ERR_BADSLOT
:
1290 case -NFS4ERR_BAD_HIGH_SLOT
:
1291 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1292 case -NFS4ERR_DEADSESSION
:
1293 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
1295 case -NFS4ERR_STALE_CLIENTID
:
1296 case -NFS4ERR_STALE_STATEID
:
1297 case -NFS4ERR_EXPIRED
:
1298 /* Don't recall a delegation if it was lost */
1299 nfs4_schedule_lease_recovery(server
->nfs_client
);
1303 * The show must go on: exit, but mark the
1304 * stateid as needing recovery.
1306 case -NFS4ERR_ADMIN_REVOKED
:
1307 case -NFS4ERR_BAD_STATEID
:
1308 nfs4_schedule_stateid_recovery(server
, state
);
1311 * User RPCSEC_GSS context has expired.
1312 * We cannot recover this stateid now, so
1313 * skip it and allow recovery thread to
1320 err
= nfs4_handle_exception(server
, err
, &exception
);
1321 } while (exception
.retry
);
1326 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1328 struct nfs4_opendata
*data
= calldata
;
1330 data
->rpc_status
= task
->tk_status
;
1331 if (data
->rpc_status
== 0) {
1332 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1333 sizeof(data
->o_res
.stateid
.data
));
1334 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1335 renew_lease(data
->o_res
.server
, data
->timestamp
);
1340 static void nfs4_open_confirm_release(void *calldata
)
1342 struct nfs4_opendata
*data
= calldata
;
1343 struct nfs4_state
*state
= NULL
;
1345 /* If this request hasn't been cancelled, do nothing */
1346 if (data
->cancelled
== 0)
1348 /* In case of error, no cleanup! */
1349 if (!data
->rpc_done
)
1351 state
= nfs4_opendata_to_nfs4_state(data
);
1353 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1355 nfs4_opendata_put(data
);
1358 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1359 .rpc_call_done
= nfs4_open_confirm_done
,
1360 .rpc_release
= nfs4_open_confirm_release
,
1364 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1366 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1368 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1369 struct rpc_task
*task
;
1370 struct rpc_message msg
= {
1371 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1372 .rpc_argp
= &data
->c_arg
,
1373 .rpc_resp
= &data
->c_res
,
1374 .rpc_cred
= data
->owner
->so_cred
,
1376 struct rpc_task_setup task_setup_data
= {
1377 .rpc_client
= server
->client
,
1378 .rpc_message
= &msg
,
1379 .callback_ops
= &nfs4_open_confirm_ops
,
1380 .callback_data
= data
,
1381 .workqueue
= nfsiod_workqueue
,
1382 .flags
= RPC_TASK_ASYNC
,
1386 kref_get(&data
->kref
);
1388 data
->rpc_status
= 0;
1389 data
->timestamp
= jiffies
;
1390 task
= rpc_run_task(&task_setup_data
);
1392 return PTR_ERR(task
);
1393 status
= nfs4_wait_for_completion_rpc_task(task
);
1395 data
->cancelled
= 1;
1398 status
= data
->rpc_status
;
1403 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1405 struct nfs4_opendata
*data
= calldata
;
1406 struct nfs4_state_owner
*sp
= data
->owner
;
1408 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1411 * Check if we still need to send an OPEN call, or if we can use
1412 * a delegation instead.
1414 if (data
->state
!= NULL
) {
1415 struct nfs_delegation
*delegation
;
1417 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1420 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1421 if (delegation
!= NULL
&&
1422 test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) == 0) {
1428 /* Update sequence id. */
1429 data
->o_arg
.id
= sp
->so_owner_id
.id
;
1430 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1431 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1432 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1433 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1435 data
->timestamp
= jiffies
;
1436 if (nfs4_setup_sequence(data
->o_arg
.server
,
1437 &data
->o_arg
.seq_args
,
1438 &data
->o_res
.seq_res
, 1, task
))
1440 rpc_call_start(task
);
1443 task
->tk_action
= NULL
;
1447 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1449 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1450 nfs4_open_prepare(task
, calldata
);
1453 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1455 struct nfs4_opendata
*data
= calldata
;
1457 data
->rpc_status
= task
->tk_status
;
1459 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1462 if (task
->tk_status
== 0) {
1463 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1467 data
->rpc_status
= -ELOOP
;
1470 data
->rpc_status
= -EISDIR
;
1473 data
->rpc_status
= -ENOTDIR
;
1475 renew_lease(data
->o_res
.server
, data
->timestamp
);
1476 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1477 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1482 static void nfs4_open_release(void *calldata
)
1484 struct nfs4_opendata
*data
= calldata
;
1485 struct nfs4_state
*state
= NULL
;
1487 /* If this request hasn't been cancelled, do nothing */
1488 if (data
->cancelled
== 0)
1490 /* In case of error, no cleanup! */
1491 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1493 /* In case we need an open_confirm, no cleanup! */
1494 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1496 state
= nfs4_opendata_to_nfs4_state(data
);
1498 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1500 nfs4_opendata_put(data
);
1503 static const struct rpc_call_ops nfs4_open_ops
= {
1504 .rpc_call_prepare
= nfs4_open_prepare
,
1505 .rpc_call_done
= nfs4_open_done
,
1506 .rpc_release
= nfs4_open_release
,
1509 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1510 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1511 .rpc_call_done
= nfs4_open_done
,
1512 .rpc_release
= nfs4_open_release
,
1515 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1517 struct inode
*dir
= data
->dir
->d_inode
;
1518 struct nfs_server
*server
= NFS_SERVER(dir
);
1519 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1520 struct nfs_openres
*o_res
= &data
->o_res
;
1521 struct rpc_task
*task
;
1522 struct rpc_message msg
= {
1523 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1526 .rpc_cred
= data
->owner
->so_cred
,
1528 struct rpc_task_setup task_setup_data
= {
1529 .rpc_client
= server
->client
,
1530 .rpc_message
= &msg
,
1531 .callback_ops
= &nfs4_open_ops
,
1532 .callback_data
= data
,
1533 .workqueue
= nfsiod_workqueue
,
1534 .flags
= RPC_TASK_ASYNC
,
1538 kref_get(&data
->kref
);
1540 data
->rpc_status
= 0;
1541 data
->cancelled
= 0;
1543 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1544 task
= rpc_run_task(&task_setup_data
);
1546 return PTR_ERR(task
);
1547 status
= nfs4_wait_for_completion_rpc_task(task
);
1549 data
->cancelled
= 1;
1552 status
= data
->rpc_status
;
1558 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1560 struct inode
*dir
= data
->dir
->d_inode
;
1561 struct nfs_openres
*o_res
= &data
->o_res
;
1564 status
= nfs4_run_open_task(data
, 1);
1565 if (status
!= 0 || !data
->rpc_done
)
1568 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1570 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1571 status
= _nfs4_proc_open_confirm(data
);
1580 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1582 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1584 struct inode
*dir
= data
->dir
->d_inode
;
1585 struct nfs_server
*server
= NFS_SERVER(dir
);
1586 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1587 struct nfs_openres
*o_res
= &data
->o_res
;
1590 status
= nfs4_run_open_task(data
, 0);
1591 if (status
!= 0 || !data
->rpc_done
)
1594 if (o_arg
->open_flags
& O_CREAT
) {
1595 update_changeattr(dir
, &o_res
->cinfo
);
1596 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1598 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1599 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1600 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1601 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1602 status
= _nfs4_proc_open_confirm(data
);
1606 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1607 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1611 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1616 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1617 ret
= nfs4_wait_clnt_recover(clp
);
1620 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1621 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1623 nfs4_schedule_state_manager(clp
);
1629 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1631 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1636 * reclaim state on the server after a network partition.
1637 * Assumes caller holds the appropriate lock
1639 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1641 struct nfs4_opendata
*opendata
;
1644 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1645 if (IS_ERR(opendata
))
1646 return PTR_ERR(opendata
);
1647 ret
= nfs4_open_recover(opendata
, state
);
1649 d_drop(ctx
->path
.dentry
);
1650 nfs4_opendata_put(opendata
);
1654 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1656 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1657 struct nfs4_exception exception
= { };
1661 err
= _nfs4_open_expired(ctx
, state
);
1665 case -NFS4ERR_GRACE
:
1666 case -NFS4ERR_DELAY
:
1667 nfs4_handle_exception(server
, err
, &exception
);
1670 } while (exception
.retry
);
1675 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1677 struct nfs_open_context
*ctx
;
1680 ctx
= nfs4_state_find_open_context(state
);
1682 return PTR_ERR(ctx
);
1683 ret
= nfs4_do_open_expired(ctx
, state
);
1684 put_nfs_open_context(ctx
);
1689 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1690 * fields corresponding to attributes that were used to store the verifier.
1691 * Make sure we clobber those fields in the later setattr call
1693 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1695 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1696 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1697 sattr
->ia_valid
|= ATTR_ATIME
;
1699 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1700 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1701 sattr
->ia_valid
|= ATTR_MTIME
;
1705 * Returns a referenced nfs4_state
1707 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
)
1709 struct nfs4_state_owner
*sp
;
1710 struct nfs4_state
*state
= NULL
;
1711 struct nfs_server
*server
= NFS_SERVER(dir
);
1712 struct nfs4_opendata
*opendata
;
1715 /* Protect against reboot recovery conflicts */
1717 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1718 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1721 status
= nfs4_recover_expired_lease(server
);
1723 goto err_put_state_owner
;
1724 if (path
->dentry
->d_inode
!= NULL
)
1725 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, fmode
);
1727 opendata
= nfs4_opendata_alloc(path
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1728 if (opendata
== NULL
)
1729 goto err_put_state_owner
;
1731 if (path
->dentry
->d_inode
!= NULL
)
1732 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1734 status
= _nfs4_proc_open(opendata
);
1736 goto err_opendata_put
;
1738 state
= nfs4_opendata_to_nfs4_state(opendata
);
1739 status
= PTR_ERR(state
);
1741 goto err_opendata_put
;
1742 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1743 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1745 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1746 nfs4_exclusive_attrset(opendata
, sattr
);
1748 nfs_fattr_init(opendata
->o_res
.f_attr
);
1749 status
= nfs4_do_setattr(state
->inode
, cred
,
1750 opendata
->o_res
.f_attr
, sattr
,
1753 nfs_setattr_update_inode(state
->inode
, sattr
);
1754 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1756 nfs4_opendata_put(opendata
);
1757 nfs4_put_state_owner(sp
);
1761 nfs4_opendata_put(opendata
);
1762 err_put_state_owner
:
1763 nfs4_put_state_owner(sp
);
1770 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
)
1772 struct nfs4_exception exception
= { };
1773 struct nfs4_state
*res
;
1777 status
= _nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
, &res
);
1780 /* NOTE: BAD_SEQID means the server and client disagree about the
1781 * book-keeping w.r.t. state-changing operations
1782 * (OPEN/CLOSE/LOCK/LOCKU...)
1783 * It is actually a sign of a bug on the client or on the server.
1785 * If we receive a BAD_SEQID error in the particular case of
1786 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1787 * have unhashed the old state_owner for us, and that we can
1788 * therefore safely retry using a new one. We should still warn
1789 * the user though...
1791 if (status
== -NFS4ERR_BAD_SEQID
) {
1792 printk(KERN_WARNING
"NFS: v4 server %s "
1793 " returned a bad sequence-id error!\n",
1794 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1795 exception
.retry
= 1;
1799 * BAD_STATEID on OPEN means that the server cancelled our
1800 * state before it received the OPEN_CONFIRM.
1801 * Recover by retrying the request as per the discussion
1802 * on Page 181 of RFC3530.
1804 if (status
== -NFS4ERR_BAD_STATEID
) {
1805 exception
.retry
= 1;
1808 if (status
== -EAGAIN
) {
1809 /* We must have found a delegation */
1810 exception
.retry
= 1;
1813 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1814 status
, &exception
));
1815 } while (exception
.retry
);
1819 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1820 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1821 struct nfs4_state
*state
)
1823 struct nfs_server
*server
= NFS_SERVER(inode
);
1824 struct nfs_setattrargs arg
= {
1825 .fh
= NFS_FH(inode
),
1828 .bitmask
= server
->attr_bitmask
,
1830 struct nfs_setattrres res
= {
1834 struct rpc_message msg
= {
1835 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1840 unsigned long timestamp
= jiffies
;
1843 nfs_fattr_init(fattr
);
1845 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1846 /* Use that stateid */
1847 } else if (state
!= NULL
) {
1848 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
, current
->tgid
);
1850 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1852 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
1853 if (status
== 0 && state
!= NULL
)
1854 renew_lease(server
, timestamp
);
1858 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1859 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1860 struct nfs4_state
*state
)
1862 struct nfs_server
*server
= NFS_SERVER(inode
);
1863 struct nfs4_exception exception
= { };
1866 err
= nfs4_handle_exception(server
,
1867 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1869 } while (exception
.retry
);
1873 struct nfs4_closedata
{
1875 struct inode
*inode
;
1876 struct nfs4_state
*state
;
1877 struct nfs_closeargs arg
;
1878 struct nfs_closeres res
;
1879 struct nfs_fattr fattr
;
1880 unsigned long timestamp
;
1885 static void nfs4_free_closedata(void *data
)
1887 struct nfs4_closedata
*calldata
= data
;
1888 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1891 pnfs_roc_release(calldata
->state
->inode
);
1892 nfs4_put_open_state(calldata
->state
);
1893 nfs_free_seqid(calldata
->arg
.seqid
);
1894 nfs4_put_state_owner(sp
);
1895 path_put(&calldata
->path
);
1899 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
1902 spin_lock(&state
->owner
->so_lock
);
1903 if (!(fmode
& FMODE_READ
))
1904 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1905 if (!(fmode
& FMODE_WRITE
))
1906 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1907 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1908 spin_unlock(&state
->owner
->so_lock
);
1911 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1913 struct nfs4_closedata
*calldata
= data
;
1914 struct nfs4_state
*state
= calldata
->state
;
1915 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1917 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
1919 /* hmm. we are done with the inode, and in the process of freeing
1920 * the state_owner. we keep this around to process errors
1922 switch (task
->tk_status
) {
1925 pnfs_roc_set_barrier(state
->inode
,
1926 calldata
->roc_barrier
);
1927 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1928 renew_lease(server
, calldata
->timestamp
);
1929 nfs4_close_clear_stateid_flags(state
,
1930 calldata
->arg
.fmode
);
1932 case -NFS4ERR_STALE_STATEID
:
1933 case -NFS4ERR_OLD_STATEID
:
1934 case -NFS4ERR_BAD_STATEID
:
1935 case -NFS4ERR_EXPIRED
:
1936 if (calldata
->arg
.fmode
== 0)
1939 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
1940 rpc_restart_call_prepare(task
);
1942 nfs_release_seqid(calldata
->arg
.seqid
);
1943 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1946 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1948 struct nfs4_closedata
*calldata
= data
;
1949 struct nfs4_state
*state
= calldata
->state
;
1952 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1955 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1956 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
1957 spin_lock(&state
->owner
->so_lock
);
1958 /* Calculate the change in open mode */
1959 if (state
->n_rdwr
== 0) {
1960 if (state
->n_rdonly
== 0) {
1961 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1962 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1963 calldata
->arg
.fmode
&= ~FMODE_READ
;
1965 if (state
->n_wronly
== 0) {
1966 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1967 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1968 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
1971 spin_unlock(&state
->owner
->so_lock
);
1974 /* Note: exit _without_ calling nfs4_close_done */
1975 task
->tk_action
= NULL
;
1979 if (calldata
->arg
.fmode
== 0) {
1980 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
1981 if (calldata
->roc
&&
1982 pnfs_roc_drain(calldata
->inode
, &calldata
->roc_barrier
)) {
1983 rpc_sleep_on(&NFS_SERVER(calldata
->inode
)->roc_rpcwaitq
,
1989 nfs_fattr_init(calldata
->res
.fattr
);
1990 calldata
->timestamp
= jiffies
;
1991 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
1992 &calldata
->arg
.seq_args
, &calldata
->res
.seq_res
,
1995 rpc_call_start(task
);
1998 static const struct rpc_call_ops nfs4_close_ops
= {
1999 .rpc_call_prepare
= nfs4_close_prepare
,
2000 .rpc_call_done
= nfs4_close_done
,
2001 .rpc_release
= nfs4_free_closedata
,
2005 * It is possible for data to be read/written from a mem-mapped file
2006 * after the sys_close call (which hits the vfs layer as a flush).
2007 * This means that we can't safely call nfsv4 close on a file until
2008 * the inode is cleared. This in turn means that we are not good
2009 * NFSv4 citizens - we do not indicate to the server to update the file's
2010 * share state even when we are done with one of the three share
2011 * stateid's in the inode.
2013 * NOTE: Caller must be holding the sp->so_owner semaphore!
2015 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
, bool roc
)
2017 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2018 struct nfs4_closedata
*calldata
;
2019 struct nfs4_state_owner
*sp
= state
->owner
;
2020 struct rpc_task
*task
;
2021 struct rpc_message msg
= {
2022 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2023 .rpc_cred
= state
->owner
->so_cred
,
2025 struct rpc_task_setup task_setup_data
= {
2026 .rpc_client
= server
->client
,
2027 .rpc_message
= &msg
,
2028 .callback_ops
= &nfs4_close_ops
,
2029 .workqueue
= nfsiod_workqueue
,
2030 .flags
= RPC_TASK_ASYNC
,
2032 int status
= -ENOMEM
;
2034 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2035 if (calldata
== NULL
)
2037 calldata
->inode
= state
->inode
;
2038 calldata
->state
= state
;
2039 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2040 calldata
->arg
.stateid
= &state
->open_stateid
;
2041 /* Serialization for the sequence id */
2042 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2043 if (calldata
->arg
.seqid
== NULL
)
2044 goto out_free_calldata
;
2045 calldata
->arg
.fmode
= 0;
2046 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2047 calldata
->res
.fattr
= &calldata
->fattr
;
2048 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2049 calldata
->res
.server
= server
;
2050 calldata
->roc
= roc
;
2052 calldata
->path
= *path
;
2054 msg
.rpc_argp
= &calldata
->arg
;
2055 msg
.rpc_resp
= &calldata
->res
;
2056 task_setup_data
.callback_data
= calldata
;
2057 task
= rpc_run_task(&task_setup_data
);
2059 return PTR_ERR(task
);
2062 status
= rpc_wait_for_completion_task(task
);
2069 pnfs_roc_release(state
->inode
);
2070 nfs4_put_open_state(state
);
2071 nfs4_put_state_owner(sp
);
2075 static struct inode
*
2076 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2078 struct nfs4_state
*state
;
2080 /* Protect against concurrent sillydeletes */
2081 state
= nfs4_do_open(dir
, &ctx
->path
, ctx
->mode
, open_flags
, attr
, ctx
->cred
);
2083 return ERR_CAST(state
);
2085 return igrab(state
->inode
);
2088 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2090 if (ctx
->state
== NULL
)
2093 nfs4_close_sync(&ctx
->path
, ctx
->state
, ctx
->mode
);
2095 nfs4_close_state(&ctx
->path
, ctx
->state
, ctx
->mode
);
2098 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2100 struct nfs4_server_caps_arg args
= {
2103 struct nfs4_server_caps_res res
= {};
2104 struct rpc_message msg
= {
2105 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2111 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2113 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2114 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2115 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2116 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2117 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2118 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2119 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2120 server
->caps
|= NFS_CAP_ACLS
;
2121 if (res
.has_links
!= 0)
2122 server
->caps
|= NFS_CAP_HARDLINKS
;
2123 if (res
.has_symlinks
!= 0)
2124 server
->caps
|= NFS_CAP_SYMLINKS
;
2125 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2126 server
->caps
|= NFS_CAP_FILEID
;
2127 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2128 server
->caps
|= NFS_CAP_MODE
;
2129 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2130 server
->caps
|= NFS_CAP_NLINK
;
2131 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2132 server
->caps
|= NFS_CAP_OWNER
;
2133 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2134 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2135 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2136 server
->caps
|= NFS_CAP_ATIME
;
2137 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2138 server
->caps
|= NFS_CAP_CTIME
;
2139 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2140 server
->caps
|= NFS_CAP_MTIME
;
2142 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2143 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2144 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2145 server
->acl_bitmask
= res
.acl_bitmask
;
2151 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2153 struct nfs4_exception exception
= { };
2156 err
= nfs4_handle_exception(server
,
2157 _nfs4_server_capabilities(server
, fhandle
),
2159 } while (exception
.retry
);
2163 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2164 struct nfs_fsinfo
*info
)
2166 struct nfs4_lookup_root_arg args
= {
2167 .bitmask
= nfs4_fattr_bitmap
,
2169 struct nfs4_lookup_res res
= {
2171 .fattr
= info
->fattr
,
2174 struct rpc_message msg
= {
2175 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2180 nfs_fattr_init(info
->fattr
);
2181 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2184 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2185 struct nfs_fsinfo
*info
)
2187 struct nfs4_exception exception
= { };
2190 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2193 case -NFS4ERR_WRONGSEC
:
2196 err
= nfs4_handle_exception(server
, err
, &exception
);
2198 } while (exception
.retry
);
2202 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2203 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2205 struct rpc_auth
*auth
;
2208 auth
= rpcauth_create(flavor
, server
->client
);
2213 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2218 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2219 struct nfs_fsinfo
*info
)
2221 int i
, len
, status
= 0;
2222 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2224 len
= gss_mech_list_pseudoflavors(&flav_array
[0]);
2225 flav_array
[len
] = RPC_AUTH_NULL
;
2228 for (i
= 0; i
< len
; i
++) {
2229 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2230 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2235 * -EACCESS could mean that the user doesn't have correct permissions
2236 * to access the mount. It could also mean that we tried to mount
2237 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2238 * existing mount programs don't handle -EACCES very well so it should
2239 * be mapped to -EPERM instead.
2241 if (status
== -EACCES
)
2247 * get the file handle for the "/" directory on the server
2249 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2250 struct nfs_fsinfo
*info
)
2252 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2253 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2255 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2256 * by nfs4_map_errors() as this function exits.
2258 status
= nfs4_find_root_sec(server
, fhandle
, info
);
2260 status
= nfs4_server_capabilities(server
, fhandle
);
2262 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2263 return nfs4_map_errors(status
);
2267 * Get locations and (maybe) other attributes of a referral.
2268 * Note that we'll actually follow the referral later when
2269 * we detect fsid mismatch in inode revalidation
2271 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2273 int status
= -ENOMEM
;
2274 struct page
*page
= NULL
;
2275 struct nfs4_fs_locations
*locations
= NULL
;
2277 page
= alloc_page(GFP_KERNEL
);
2280 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2281 if (locations
== NULL
)
2284 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2287 /* Make sure server returned a different fsid for the referral */
2288 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2289 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__
, name
->name
);
2294 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2295 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
2297 fattr
->mode
= S_IFDIR
;
2298 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2306 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2308 struct nfs4_getattr_arg args
= {
2310 .bitmask
= server
->attr_bitmask
,
2312 struct nfs4_getattr_res res
= {
2316 struct rpc_message msg
= {
2317 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2322 nfs_fattr_init(fattr
);
2323 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2326 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2328 struct nfs4_exception exception
= { };
2331 err
= nfs4_handle_exception(server
,
2332 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2334 } while (exception
.retry
);
2339 * The file is not closed if it is opened due to the a request to change
2340 * the size of the file. The open call will not be needed once the
2341 * VFS layer lookup-intents are implemented.
2343 * Close is called when the inode is destroyed.
2344 * If we haven't opened the file for O_WRONLY, we
2345 * need to in the size_change case to obtain a stateid.
2348 * Because OPEN is always done by name in nfsv4, it is
2349 * possible that we opened a different file by the same
2350 * name. We can recognize this race condition, but we
2351 * can't do anything about it besides returning an error.
2353 * This will be fixed with VFS changes (lookup-intent).
2356 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2357 struct iattr
*sattr
)
2359 struct inode
*inode
= dentry
->d_inode
;
2360 struct rpc_cred
*cred
= NULL
;
2361 struct nfs4_state
*state
= NULL
;
2364 nfs_fattr_init(fattr
);
2366 /* Search for an existing open(O_WRITE) file */
2367 if (sattr
->ia_valid
& ATTR_FILE
) {
2368 struct nfs_open_context
*ctx
;
2370 ctx
= nfs_file_open_context(sattr
->ia_file
);
2377 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2379 nfs_setattr_update_inode(inode
, sattr
);
2383 static int _nfs4_proc_lookupfh(struct rpc_clnt
*clnt
, struct nfs_server
*server
,
2384 const struct nfs_fh
*dirfh
, const struct qstr
*name
,
2385 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2388 struct nfs4_lookup_arg args
= {
2389 .bitmask
= server
->attr_bitmask
,
2393 struct nfs4_lookup_res res
= {
2398 struct rpc_message msg
= {
2399 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2404 nfs_fattr_init(fattr
);
2406 dprintk("NFS call lookupfh %s\n", name
->name
);
2407 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2408 dprintk("NFS reply lookupfh: %d\n", status
);
2412 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
2413 struct qstr
*name
, struct nfs_fh
*fhandle
,
2414 struct nfs_fattr
*fattr
)
2416 struct nfs4_exception exception
= { };
2419 err
= _nfs4_proc_lookupfh(server
->client
, server
, dirfh
, name
, fhandle
, fattr
);
2421 if (err
== -NFS4ERR_MOVED
) {
2425 err
= nfs4_handle_exception(server
, err
, &exception
);
2426 } while (exception
.retry
);
2430 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2431 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2432 struct nfs_fattr
*fattr
)
2436 dprintk("NFS call lookup %s\n", name
->name
);
2437 status
= _nfs4_proc_lookupfh(clnt
, NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
2438 if (status
== -NFS4ERR_MOVED
)
2439 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2440 dprintk("NFS reply lookup: %d\n", status
);
2444 void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
, struct nfs_fh
*fh
)
2446 memset(fh
, 0, sizeof(struct nfs_fh
));
2447 fattr
->fsid
.major
= 1;
2448 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2449 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_FSID
| NFS_ATTR_FATTR_MOUNTPOINT
;
2450 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2454 static int nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
, struct qstr
*name
,
2455 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2457 struct nfs4_exception exception
= { };
2460 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2461 _nfs4_proc_lookup(clnt
, dir
, name
, fhandle
, fattr
),
2464 nfs_fixup_secinfo_attributes(fattr
, fhandle
);
2465 } while (exception
.retry
);
2469 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2471 struct nfs_server
*server
= NFS_SERVER(inode
);
2472 struct nfs4_accessargs args
= {
2473 .fh
= NFS_FH(inode
),
2474 .bitmask
= server
->attr_bitmask
,
2476 struct nfs4_accessres res
= {
2479 struct rpc_message msg
= {
2480 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2483 .rpc_cred
= entry
->cred
,
2485 int mode
= entry
->mask
;
2489 * Determine which access bits we want to ask for...
2491 if (mode
& MAY_READ
)
2492 args
.access
|= NFS4_ACCESS_READ
;
2493 if (S_ISDIR(inode
->i_mode
)) {
2494 if (mode
& MAY_WRITE
)
2495 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2496 if (mode
& MAY_EXEC
)
2497 args
.access
|= NFS4_ACCESS_LOOKUP
;
2499 if (mode
& MAY_WRITE
)
2500 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2501 if (mode
& MAY_EXEC
)
2502 args
.access
|= NFS4_ACCESS_EXECUTE
;
2505 res
.fattr
= nfs_alloc_fattr();
2506 if (res
.fattr
== NULL
)
2509 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2512 if (res
.access
& NFS4_ACCESS_READ
)
2513 entry
->mask
|= MAY_READ
;
2514 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2515 entry
->mask
|= MAY_WRITE
;
2516 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2517 entry
->mask
|= MAY_EXEC
;
2518 nfs_refresh_inode(inode
, res
.fattr
);
2520 nfs_free_fattr(res
.fattr
);
2524 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2526 struct nfs4_exception exception
= { };
2529 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2530 _nfs4_proc_access(inode
, entry
),
2532 } while (exception
.retry
);
2537 * TODO: For the time being, we don't try to get any attributes
2538 * along with any of the zero-copy operations READ, READDIR,
2541 * In the case of the first three, we want to put the GETATTR
2542 * after the read-type operation -- this is because it is hard
2543 * to predict the length of a GETATTR response in v4, and thus
2544 * align the READ data correctly. This means that the GETATTR
2545 * may end up partially falling into the page cache, and we should
2546 * shift it into the 'tail' of the xdr_buf before processing.
2547 * To do this efficiently, we need to know the total length
2548 * of data received, which doesn't seem to be available outside
2551 * In the case of WRITE, we also want to put the GETATTR after
2552 * the operation -- in this case because we want to make sure
2553 * we get the post-operation mtime and size. This means that
2554 * we can't use xdr_encode_pages() as written: we need a variant
2555 * of it which would leave room in the 'tail' iovec.
2557 * Both of these changes to the XDR layer would in fact be quite
2558 * minor, but I decided to leave them for a subsequent patch.
2560 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2561 unsigned int pgbase
, unsigned int pglen
)
2563 struct nfs4_readlink args
= {
2564 .fh
= NFS_FH(inode
),
2569 struct nfs4_readlink_res res
;
2570 struct rpc_message msg
= {
2571 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2576 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2579 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2580 unsigned int pgbase
, unsigned int pglen
)
2582 struct nfs4_exception exception
= { };
2585 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2586 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2588 } while (exception
.retry
);
2594 * We will need to arrange for the VFS layer to provide an atomic open.
2595 * Until then, this create/open method is prone to inefficiency and race
2596 * conditions due to the lookup, create, and open VFS calls from sys_open()
2597 * placed on the wire.
2599 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2600 * The file will be opened again in the subsequent VFS open call
2601 * (nfs4_proc_file_open).
2603 * The open for read will just hang around to be used by any process that
2604 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2608 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2609 int flags
, struct nfs_open_context
*ctx
)
2611 struct path my_path
= {
2614 struct path
*path
= &my_path
;
2615 struct nfs4_state
*state
;
2616 struct rpc_cred
*cred
= NULL
;
2625 sattr
->ia_mode
&= ~current_umask();
2626 state
= nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
);
2628 if (IS_ERR(state
)) {
2629 status
= PTR_ERR(state
);
2632 d_add(dentry
, igrab(state
->inode
));
2633 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2637 nfs4_close_sync(path
, state
, fmode
);
2642 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2644 struct nfs_server
*server
= NFS_SERVER(dir
);
2645 struct nfs_removeargs args
= {
2647 .name
.len
= name
->len
,
2648 .name
.name
= name
->name
,
2649 .bitmask
= server
->attr_bitmask
,
2651 struct nfs_removeres res
= {
2654 struct rpc_message msg
= {
2655 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2659 int status
= -ENOMEM
;
2661 res
.dir_attr
= nfs_alloc_fattr();
2662 if (res
.dir_attr
== NULL
)
2665 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2667 update_changeattr(dir
, &res
.cinfo
);
2668 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2670 nfs_free_fattr(res
.dir_attr
);
2675 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2677 struct nfs4_exception exception
= { };
2680 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2681 _nfs4_proc_remove(dir
, name
),
2683 } while (exception
.retry
);
2687 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2689 struct nfs_server
*server
= NFS_SERVER(dir
);
2690 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2691 struct nfs_removeres
*res
= msg
->rpc_resp
;
2693 args
->bitmask
= server
->cache_consistency_bitmask
;
2694 res
->server
= server
;
2695 res
->seq_res
.sr_slot
= NULL
;
2696 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2699 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2701 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2703 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2705 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2707 update_changeattr(dir
, &res
->cinfo
);
2708 nfs_post_op_update_inode(dir
, res
->dir_attr
);
2712 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2714 struct nfs_server
*server
= NFS_SERVER(dir
);
2715 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2716 struct nfs_renameres
*res
= msg
->rpc_resp
;
2718 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2719 arg
->bitmask
= server
->attr_bitmask
;
2720 res
->server
= server
;
2723 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2724 struct inode
*new_dir
)
2726 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2728 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2730 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2733 update_changeattr(old_dir
, &res
->old_cinfo
);
2734 nfs_post_op_update_inode(old_dir
, res
->old_fattr
);
2735 update_changeattr(new_dir
, &res
->new_cinfo
);
2736 nfs_post_op_update_inode(new_dir
, res
->new_fattr
);
2740 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2741 struct inode
*new_dir
, struct qstr
*new_name
)
2743 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2744 struct nfs_renameargs arg
= {
2745 .old_dir
= NFS_FH(old_dir
),
2746 .new_dir
= NFS_FH(new_dir
),
2747 .old_name
= old_name
,
2748 .new_name
= new_name
,
2749 .bitmask
= server
->attr_bitmask
,
2751 struct nfs_renameres res
= {
2754 struct rpc_message msg
= {
2755 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2759 int status
= -ENOMEM
;
2761 res
.old_fattr
= nfs_alloc_fattr();
2762 res
.new_fattr
= nfs_alloc_fattr();
2763 if (res
.old_fattr
== NULL
|| res
.new_fattr
== NULL
)
2766 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2768 update_changeattr(old_dir
, &res
.old_cinfo
);
2769 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2770 update_changeattr(new_dir
, &res
.new_cinfo
);
2771 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2774 nfs_free_fattr(res
.new_fattr
);
2775 nfs_free_fattr(res
.old_fattr
);
2779 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2780 struct inode
*new_dir
, struct qstr
*new_name
)
2782 struct nfs4_exception exception
= { };
2785 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2786 _nfs4_proc_rename(old_dir
, old_name
,
2789 } while (exception
.retry
);
2793 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2795 struct nfs_server
*server
= NFS_SERVER(inode
);
2796 struct nfs4_link_arg arg
= {
2797 .fh
= NFS_FH(inode
),
2798 .dir_fh
= NFS_FH(dir
),
2800 .bitmask
= server
->attr_bitmask
,
2802 struct nfs4_link_res res
= {
2805 struct rpc_message msg
= {
2806 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2810 int status
= -ENOMEM
;
2812 res
.fattr
= nfs_alloc_fattr();
2813 res
.dir_attr
= nfs_alloc_fattr();
2814 if (res
.fattr
== NULL
|| res
.dir_attr
== NULL
)
2817 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2819 update_changeattr(dir
, &res
.cinfo
);
2820 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2821 nfs_post_op_update_inode(inode
, res
.fattr
);
2824 nfs_free_fattr(res
.dir_attr
);
2825 nfs_free_fattr(res
.fattr
);
2829 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2831 struct nfs4_exception exception
= { };
2834 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2835 _nfs4_proc_link(inode
, dir
, name
),
2837 } while (exception
.retry
);
2841 struct nfs4_createdata
{
2842 struct rpc_message msg
;
2843 struct nfs4_create_arg arg
;
2844 struct nfs4_create_res res
;
2846 struct nfs_fattr fattr
;
2847 struct nfs_fattr dir_fattr
;
2850 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2851 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2853 struct nfs4_createdata
*data
;
2855 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2857 struct nfs_server
*server
= NFS_SERVER(dir
);
2859 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2860 data
->msg
.rpc_argp
= &data
->arg
;
2861 data
->msg
.rpc_resp
= &data
->res
;
2862 data
->arg
.dir_fh
= NFS_FH(dir
);
2863 data
->arg
.server
= server
;
2864 data
->arg
.name
= name
;
2865 data
->arg
.attrs
= sattr
;
2866 data
->arg
.ftype
= ftype
;
2867 data
->arg
.bitmask
= server
->attr_bitmask
;
2868 data
->res
.server
= server
;
2869 data
->res
.fh
= &data
->fh
;
2870 data
->res
.fattr
= &data
->fattr
;
2871 data
->res
.dir_fattr
= &data
->dir_fattr
;
2872 nfs_fattr_init(data
->res
.fattr
);
2873 nfs_fattr_init(data
->res
.dir_fattr
);
2878 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2880 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
2881 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
2883 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2884 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2885 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2890 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2895 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2896 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2898 struct nfs4_createdata
*data
;
2899 int status
= -ENAMETOOLONG
;
2901 if (len
> NFS4_MAXPATHLEN
)
2905 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2909 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2910 data
->arg
.u
.symlink
.pages
= &page
;
2911 data
->arg
.u
.symlink
.len
= len
;
2913 status
= nfs4_do_create(dir
, dentry
, data
);
2915 nfs4_free_createdata(data
);
2920 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2921 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2923 struct nfs4_exception exception
= { };
2926 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2927 _nfs4_proc_symlink(dir
, dentry
, page
,
2930 } while (exception
.retry
);
2934 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2935 struct iattr
*sattr
)
2937 struct nfs4_createdata
*data
;
2938 int status
= -ENOMEM
;
2940 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2944 status
= nfs4_do_create(dir
, dentry
, data
);
2946 nfs4_free_createdata(data
);
2951 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2952 struct iattr
*sattr
)
2954 struct nfs4_exception exception
= { };
2957 sattr
->ia_mode
&= ~current_umask();
2959 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2960 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2962 } while (exception
.retry
);
2966 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2967 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
2969 struct inode
*dir
= dentry
->d_inode
;
2970 struct nfs4_readdir_arg args
= {
2975 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2978 struct nfs4_readdir_res res
;
2979 struct rpc_message msg
= {
2980 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2987 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
2988 dentry
->d_parent
->d_name
.name
,
2989 dentry
->d_name
.name
,
2990 (unsigned long long)cookie
);
2991 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2992 res
.pgbase
= args
.pgbase
;
2993 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2995 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2996 status
+= args
.pgbase
;
2999 nfs_invalidate_atime(dir
);
3001 dprintk("%s: returns %d\n", __func__
, status
);
3005 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3006 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3008 struct nfs4_exception exception
= { };
3011 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3012 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3013 pages
, count
, plus
),
3015 } while (exception
.retry
);
3019 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3020 struct iattr
*sattr
, dev_t rdev
)
3022 struct nfs4_createdata
*data
;
3023 int mode
= sattr
->ia_mode
;
3024 int status
= -ENOMEM
;
3026 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
3027 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
3029 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3034 data
->arg
.ftype
= NF4FIFO
;
3035 else if (S_ISBLK(mode
)) {
3036 data
->arg
.ftype
= NF4BLK
;
3037 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3038 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3040 else if (S_ISCHR(mode
)) {
3041 data
->arg
.ftype
= NF4CHR
;
3042 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3043 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3046 status
= nfs4_do_create(dir
, dentry
, data
);
3048 nfs4_free_createdata(data
);
3053 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3054 struct iattr
*sattr
, dev_t rdev
)
3056 struct nfs4_exception exception
= { };
3059 sattr
->ia_mode
&= ~current_umask();
3061 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3062 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3064 } while (exception
.retry
);
3068 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3069 struct nfs_fsstat
*fsstat
)
3071 struct nfs4_statfs_arg args
= {
3073 .bitmask
= server
->attr_bitmask
,
3075 struct nfs4_statfs_res res
= {
3078 struct rpc_message msg
= {
3079 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3084 nfs_fattr_init(fsstat
->fattr
);
3085 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3088 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3090 struct nfs4_exception exception
= { };
3093 err
= nfs4_handle_exception(server
,
3094 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3096 } while (exception
.retry
);
3100 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3101 struct nfs_fsinfo
*fsinfo
)
3103 struct nfs4_fsinfo_arg args
= {
3105 .bitmask
= server
->attr_bitmask
,
3107 struct nfs4_fsinfo_res res
= {
3110 struct rpc_message msg
= {
3111 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3116 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3119 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3121 struct nfs4_exception exception
= { };
3125 err
= nfs4_handle_exception(server
,
3126 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3128 } while (exception
.retry
);
3132 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3134 nfs_fattr_init(fsinfo
->fattr
);
3135 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3138 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3139 struct nfs_pathconf
*pathconf
)
3141 struct nfs4_pathconf_arg args
= {
3143 .bitmask
= server
->attr_bitmask
,
3145 struct nfs4_pathconf_res res
= {
3146 .pathconf
= pathconf
,
3148 struct rpc_message msg
= {
3149 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3154 /* None of the pathconf attributes are mandatory to implement */
3155 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3156 memset(pathconf
, 0, sizeof(*pathconf
));
3160 nfs_fattr_init(pathconf
->fattr
);
3161 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3164 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3165 struct nfs_pathconf
*pathconf
)
3167 struct nfs4_exception exception
= { };
3171 err
= nfs4_handle_exception(server
,
3172 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3174 } while (exception
.retry
);
3178 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3180 nfs_invalidate_atime(data
->inode
);
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 __nfs4_read_done_cb(data
);
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
? data
->read_done_cb(task
, data
) :
3207 nfs4_read_done_cb(task
, data
);
3210 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3212 data
->timestamp
= jiffies
;
3213 data
->read_done_cb
= nfs4_read_done_cb
;
3214 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3217 /* Reset the the nfs_read_data to send the read to the MDS. */
3218 void nfs4_reset_read(struct rpc_task
*task
, struct nfs_read_data
*data
)
3220 dprintk("%s Reset task for i/o through\n", __func__
);
3221 put_lseg(data
->lseg
);
3223 /* offsets will differ in the dense stripe case */
3224 data
->args
.offset
= data
->mds_offset
;
3225 data
->ds_clp
= NULL
;
3226 data
->args
.fh
= NFS_FH(data
->inode
);
3227 data
->read_done_cb
= nfs4_read_done_cb
;
3228 task
->tk_ops
= data
->mds_ops
;
3229 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3231 EXPORT_SYMBOL_GPL(nfs4_reset_read
);
3233 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3235 struct inode
*inode
= data
->inode
;
3237 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3238 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3241 if (task
->tk_status
>= 0) {
3242 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3243 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3248 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3250 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3252 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3253 nfs4_write_done_cb(task
, data
);
3256 /* Reset the the nfs_write_data to send the write to the MDS. */
3257 void nfs4_reset_write(struct rpc_task
*task
, struct nfs_write_data
*data
)
3259 dprintk("%s Reset task for i/o through\n", __func__
);
3260 put_lseg(data
->lseg
);
3262 data
->ds_clp
= NULL
;
3263 data
->write_done_cb
= nfs4_write_done_cb
;
3264 data
->args
.fh
= NFS_FH(data
->inode
);
3265 data
->args
.bitmask
= data
->res
.server
->cache_consistency_bitmask
;
3266 data
->args
.offset
= data
->mds_offset
;
3267 data
->res
.fattr
= &data
->fattr
;
3268 task
->tk_ops
= data
->mds_ops
;
3269 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3271 EXPORT_SYMBOL_GPL(nfs4_reset_write
);
3273 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3275 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3278 data
->args
.bitmask
= NULL
;
3279 data
->res
.fattr
= NULL
;
3281 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3282 if (!data
->write_done_cb
)
3283 data
->write_done_cb
= nfs4_write_done_cb
;
3284 data
->res
.server
= server
;
3285 data
->timestamp
= jiffies
;
3287 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3290 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3292 struct inode
*inode
= data
->inode
;
3294 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3295 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3298 nfs_refresh_inode(inode
, data
->res
.fattr
);
3302 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3304 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3306 return data
->write_done_cb(task
, data
);
3309 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3311 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3314 data
->args
.bitmask
= NULL
;
3315 data
->res
.fattr
= NULL
;
3317 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3318 if (!data
->write_done_cb
)
3319 data
->write_done_cb
= nfs4_commit_done_cb
;
3320 data
->res
.server
= server
;
3321 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3324 struct nfs4_renewdata
{
3325 struct nfs_client
*client
;
3326 unsigned long timestamp
;
3330 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3331 * standalone procedure for queueing an asynchronous RENEW.
3333 static void nfs4_renew_release(void *calldata
)
3335 struct nfs4_renewdata
*data
= calldata
;
3336 struct nfs_client
*clp
= data
->client
;
3338 if (atomic_read(&clp
->cl_count
) > 1)
3339 nfs4_schedule_state_renewal(clp
);
3340 nfs_put_client(clp
);
3344 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3346 struct nfs4_renewdata
*data
= calldata
;
3347 struct nfs_client
*clp
= data
->client
;
3348 unsigned long timestamp
= data
->timestamp
;
3350 if (task
->tk_status
< 0) {
3351 /* Unless we're shutting down, schedule state recovery! */
3352 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) != 0)
3353 nfs4_schedule_lease_recovery(clp
);
3356 do_renew_lease(clp
, timestamp
);
3359 static const struct rpc_call_ops nfs4_renew_ops
= {
3360 .rpc_call_done
= nfs4_renew_done
,
3361 .rpc_release
= nfs4_renew_release
,
3364 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3366 struct rpc_message msg
= {
3367 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3371 struct nfs4_renewdata
*data
;
3373 if (!atomic_inc_not_zero(&clp
->cl_count
))
3375 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3379 data
->timestamp
= jiffies
;
3380 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3381 &nfs4_renew_ops
, data
);
3384 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3386 struct rpc_message msg
= {
3387 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3391 unsigned long now
= jiffies
;
3394 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3397 do_renew_lease(clp
, now
);
3401 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3403 return (server
->caps
& NFS_CAP_ACLS
)
3404 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3405 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3408 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3409 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3412 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3414 static void buf_to_pages(const void *buf
, size_t buflen
,
3415 struct page
**pages
, unsigned int *pgbase
)
3417 const void *p
= buf
;
3419 *pgbase
= offset_in_page(buf
);
3421 while (p
< buf
+ buflen
) {
3422 *(pages
++) = virt_to_page(p
);
3423 p
+= PAGE_CACHE_SIZE
;
3427 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3428 struct page
**pages
, unsigned int *pgbase
)
3430 struct page
*newpage
, **spages
;
3436 len
= min_t(size_t, PAGE_CACHE_SIZE
, buflen
);
3437 newpage
= alloc_page(GFP_KERNEL
);
3439 if (newpage
== NULL
)
3441 memcpy(page_address(newpage
), buf
, len
);
3446 } while (buflen
!= 0);
3452 __free_page(spages
[rc
-1]);
3456 struct nfs4_cached_acl
{
3462 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3464 struct nfs_inode
*nfsi
= NFS_I(inode
);
3466 spin_lock(&inode
->i_lock
);
3467 kfree(nfsi
->nfs4_acl
);
3468 nfsi
->nfs4_acl
= acl
;
3469 spin_unlock(&inode
->i_lock
);
3472 static void nfs4_zap_acl_attr(struct inode
*inode
)
3474 nfs4_set_cached_acl(inode
, NULL
);
3477 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3479 struct nfs_inode
*nfsi
= NFS_I(inode
);
3480 struct nfs4_cached_acl
*acl
;
3483 spin_lock(&inode
->i_lock
);
3484 acl
= nfsi
->nfs4_acl
;
3487 if (buf
== NULL
) /* user is just asking for length */
3489 if (acl
->cached
== 0)
3491 ret
= -ERANGE
; /* see getxattr(2) man page */
3492 if (acl
->len
> buflen
)
3494 memcpy(buf
, acl
->data
, acl
->len
);
3498 spin_unlock(&inode
->i_lock
);
3502 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3504 struct nfs4_cached_acl
*acl
;
3506 if (buf
&& acl_len
<= PAGE_SIZE
) {
3507 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3511 memcpy(acl
->data
, buf
, acl_len
);
3513 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3520 nfs4_set_cached_acl(inode
, acl
);
3523 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3525 struct page
*pages
[NFS4ACL_MAXPAGES
];
3526 struct nfs_getaclargs args
= {
3527 .fh
= NFS_FH(inode
),
3531 struct nfs_getaclres res
= {
3535 struct rpc_message msg
= {
3536 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3540 struct page
*localpage
= NULL
;
3543 if (buflen
< PAGE_SIZE
) {
3544 /* As long as we're doing a round trip to the server anyway,
3545 * let's be prepared for a page of acl data. */
3546 localpage
= alloc_page(GFP_KERNEL
);
3547 resp_buf
= page_address(localpage
);
3548 if (localpage
== NULL
)
3550 args
.acl_pages
[0] = localpage
;
3551 args
.acl_pgbase
= 0;
3552 args
.acl_len
= PAGE_SIZE
;
3555 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
3557 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3560 if (res
.acl_len
> args
.acl_len
)
3561 nfs4_write_cached_acl(inode
, NULL
, res
.acl_len
);
3563 nfs4_write_cached_acl(inode
, resp_buf
, res
.acl_len
);
3566 if (res
.acl_len
> buflen
)
3569 memcpy(buf
, resp_buf
, res
.acl_len
);
3574 __free_page(localpage
);
3578 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3580 struct nfs4_exception exception
= { };
3583 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3586 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3587 } while (exception
.retry
);
3591 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3593 struct nfs_server
*server
= NFS_SERVER(inode
);
3596 if (!nfs4_server_supports_acls(server
))
3598 ret
= nfs_revalidate_inode(server
, inode
);
3601 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3602 nfs_zap_acl_cache(inode
);
3603 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3606 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3609 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3611 struct nfs_server
*server
= NFS_SERVER(inode
);
3612 struct page
*pages
[NFS4ACL_MAXPAGES
];
3613 struct nfs_setaclargs arg
= {
3614 .fh
= NFS_FH(inode
),
3618 struct nfs_setaclres res
;
3619 struct rpc_message msg
= {
3620 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3626 if (!nfs4_server_supports_acls(server
))
3628 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3631 nfs_inode_return_delegation(inode
);
3632 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3635 * Free each page after tx, so the only ref left is
3636 * held by the network stack
3639 put_page(pages
[i
-1]);
3642 * Acl update can result in inode attribute update.
3643 * so mark the attribute cache invalid.
3645 spin_lock(&inode
->i_lock
);
3646 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3647 spin_unlock(&inode
->i_lock
);
3648 nfs_access_zap_cache(inode
);
3649 nfs_zap_acl_cache(inode
);
3653 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3655 struct nfs4_exception exception
= { };
3658 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3659 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3661 } while (exception
.retry
);
3666 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3668 struct nfs_client
*clp
= server
->nfs_client
;
3670 if (task
->tk_status
>= 0)
3672 switch(task
->tk_status
) {
3673 case -NFS4ERR_ADMIN_REVOKED
:
3674 case -NFS4ERR_BAD_STATEID
:
3675 case -NFS4ERR_OPENMODE
:
3678 nfs4_schedule_stateid_recovery(server
, state
);
3679 goto wait_on_recovery
;
3680 case -NFS4ERR_STALE_STATEID
:
3681 case -NFS4ERR_STALE_CLIENTID
:
3682 case -NFS4ERR_EXPIRED
:
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 case -NFS4ERR_STALE_CLIENTID
:
4554 case -NFS4ERR_STALE_STATEID
:
4555 nfs4_schedule_lease_recovery(server
->nfs_client
);
4557 case -NFS4ERR_BADSESSION
:
4558 case -NFS4ERR_BADSLOT
:
4559 case -NFS4ERR_BAD_HIGH_SLOT
:
4560 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4561 case -NFS4ERR_DEADSESSION
:
4562 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
4566 * The show must go on: exit, but mark the
4567 * stateid as needing recovery.
4569 case -NFS4ERR_ADMIN_REVOKED
:
4570 case -NFS4ERR_BAD_STATEID
:
4571 case -NFS4ERR_OPENMODE
:
4572 nfs4_schedule_stateid_recovery(server
, state
);
4577 * User RPCSEC_GSS context has expired.
4578 * We cannot recover this stateid now, so
4579 * skip it and allow recovery thread to
4585 case -NFS4ERR_DENIED
:
4586 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4589 case -NFS4ERR_DELAY
:
4592 err
= nfs4_handle_exception(server
, err
, &exception
);
4593 } while (exception
.retry
);
4598 static void nfs4_release_lockowner_release(void *calldata
)
4603 const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4604 .rpc_release
= nfs4_release_lockowner_release
,
4607 void nfs4_release_lockowner(const struct nfs4_lock_state
*lsp
)
4609 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4610 struct nfs_release_lockowner_args
*args
;
4611 struct rpc_message msg
= {
4612 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4615 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
4617 args
= kmalloc(sizeof(*args
), GFP_NOFS
);
4620 args
->lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4621 args
->lock_owner
.id
= lsp
->ls_id
.id
;
4622 args
->lock_owner
.s_dev
= server
->s_dev
;
4623 msg
.rpc_argp
= args
;
4624 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, args
);
4627 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4629 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
4630 const void *buf
, size_t buflen
,
4631 int flags
, int type
)
4633 if (strcmp(key
, "") != 0)
4636 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
4639 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
4640 void *buf
, size_t buflen
, int type
)
4642 if (strcmp(key
, "") != 0)
4645 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
4648 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
4649 size_t list_len
, const char *name
,
4650 size_t name_len
, int type
)
4652 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
4654 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4657 if (list
&& len
<= list_len
)
4658 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
4662 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4664 if (!((fattr
->valid
& NFS_ATTR_FATTR_FILEID
) &&
4665 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4666 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4669 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4670 NFS_ATTR_FATTR_NLINK
;
4671 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4675 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4676 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4678 struct nfs_server
*server
= NFS_SERVER(dir
);
4680 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4681 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
4683 struct nfs4_fs_locations_arg args
= {
4684 .dir_fh
= NFS_FH(dir
),
4689 struct nfs4_fs_locations_res res
= {
4690 .fs_locations
= fs_locations
,
4692 struct rpc_message msg
= {
4693 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4699 dprintk("%s: start\n", __func__
);
4700 nfs_fattr_init(&fs_locations
->fattr
);
4701 fs_locations
->server
= server
;
4702 fs_locations
->nlocations
= 0;
4703 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4704 nfs_fixup_referral_attributes(&fs_locations
->fattr
);
4705 dprintk("%s: returned status = %d\n", __func__
, status
);
4709 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4712 struct nfs4_secinfo_arg args
= {
4713 .dir_fh
= NFS_FH(dir
),
4716 struct nfs4_secinfo_res res
= {
4719 struct rpc_message msg
= {
4720 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
4725 dprintk("NFS call secinfo %s\n", name
->name
);
4726 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4727 dprintk("NFS reply secinfo: %d\n", status
);
4731 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4733 struct nfs4_exception exception
= { };
4736 err
= nfs4_handle_exception(NFS_SERVER(dir
),
4737 _nfs4_proc_secinfo(dir
, name
, flavors
),
4739 } while (exception
.retry
);
4743 #ifdef CONFIG_NFS_V4_1
4745 * Check the exchange flags returned by the server for invalid flags, having
4746 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
4749 static int nfs4_check_cl_exchange_flags(u32 flags
)
4751 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
4753 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
4754 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
4756 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
4760 return -NFS4ERR_INVAL
;
4764 * nfs4_proc_exchange_id()
4766 * Since the clientid has expired, all compounds using sessions
4767 * associated with the stale clientid will be returning
4768 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4769 * be in some phase of session reset.
4771 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4773 nfs4_verifier verifier
;
4774 struct nfs41_exchange_id_args args
= {
4776 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
4778 struct nfs41_exchange_id_res res
= {
4782 struct rpc_message msg
= {
4783 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4790 dprintk("--> %s\n", __func__
);
4791 BUG_ON(clp
== NULL
);
4793 p
= (u32
*)verifier
.data
;
4794 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4795 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4796 args
.verifier
= &verifier
;
4798 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4801 init_utsname()->nodename
,
4802 init_utsname()->domainname
,
4803 clp
->cl_rpcclient
->cl_auth
->au_flavor
);
4805 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4807 status
= nfs4_check_cl_exchange_flags(clp
->cl_exchange_flags
);
4808 dprintk("<-- %s status= %d\n", __func__
, status
);
4812 struct nfs4_get_lease_time_data
{
4813 struct nfs4_get_lease_time_args
*args
;
4814 struct nfs4_get_lease_time_res
*res
;
4815 struct nfs_client
*clp
;
4818 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4822 struct nfs4_get_lease_time_data
*data
=
4823 (struct nfs4_get_lease_time_data
*)calldata
;
4825 dprintk("--> %s\n", __func__
);
4826 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4827 /* just setup sequence, do not trigger session recovery
4828 since we're invoked within one */
4829 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4830 &data
->args
->la_seq_args
,
4831 &data
->res
->lr_seq_res
, 0, task
);
4833 BUG_ON(ret
== -EAGAIN
);
4834 rpc_call_start(task
);
4835 dprintk("<-- %s\n", __func__
);
4839 * Called from nfs4_state_manager thread for session setup, so don't recover
4840 * from sequence operation or clientid errors.
4842 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4844 struct nfs4_get_lease_time_data
*data
=
4845 (struct nfs4_get_lease_time_data
*)calldata
;
4847 dprintk("--> %s\n", __func__
);
4848 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
4850 switch (task
->tk_status
) {
4851 case -NFS4ERR_DELAY
:
4852 case -NFS4ERR_GRACE
:
4853 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
4854 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
4855 task
->tk_status
= 0;
4857 case -NFS4ERR_RETRY_UNCACHED_REP
:
4858 nfs_restart_rpc(task
, data
->clp
);
4861 dprintk("<-- %s\n", __func__
);
4864 struct rpc_call_ops nfs4_get_lease_time_ops
= {
4865 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
4866 .rpc_call_done
= nfs4_get_lease_time_done
,
4869 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
4871 struct rpc_task
*task
;
4872 struct nfs4_get_lease_time_args args
;
4873 struct nfs4_get_lease_time_res res
= {
4874 .lr_fsinfo
= fsinfo
,
4876 struct nfs4_get_lease_time_data data
= {
4881 struct rpc_message msg
= {
4882 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
4886 struct rpc_task_setup task_setup
= {
4887 .rpc_client
= clp
->cl_rpcclient
,
4888 .rpc_message
= &msg
,
4889 .callback_ops
= &nfs4_get_lease_time_ops
,
4890 .callback_data
= &data
,
4891 .flags
= RPC_TASK_TIMEOUT
,
4895 dprintk("--> %s\n", __func__
);
4896 task
= rpc_run_task(&task_setup
);
4899 status
= PTR_ERR(task
);
4901 status
= task
->tk_status
;
4904 dprintk("<-- %s return %d\n", __func__
, status
);
4910 * Reset a slot table
4912 static int nfs4_reset_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
4915 struct nfs4_slot
*new = NULL
;
4919 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
4920 max_reqs
, tbl
->max_slots
);
4922 /* Does the newly negotiated max_reqs match the existing slot table? */
4923 if (max_reqs
!= tbl
->max_slots
) {
4925 new = kmalloc(max_reqs
* sizeof(struct nfs4_slot
),
4932 spin_lock(&tbl
->slot_tbl_lock
);
4935 tbl
->max_slots
= max_reqs
;
4937 for (i
= 0; i
< tbl
->max_slots
; ++i
)
4938 tbl
->slots
[i
].seq_nr
= ivalue
;
4939 spin_unlock(&tbl
->slot_tbl_lock
);
4940 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4941 tbl
, tbl
->slots
, tbl
->max_slots
);
4943 dprintk("<-- %s: return %d\n", __func__
, ret
);
4948 * Reset the forechannel and backchannel slot tables
4950 static int nfs4_reset_slot_tables(struct nfs4_session
*session
)
4954 status
= nfs4_reset_slot_table(&session
->fc_slot_table
,
4955 session
->fc_attrs
.max_reqs
, 1);
4959 status
= nfs4_reset_slot_table(&session
->bc_slot_table
,
4960 session
->bc_attrs
.max_reqs
, 0);
4964 /* Destroy the slot table */
4965 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
4967 if (session
->fc_slot_table
.slots
!= NULL
) {
4968 kfree(session
->fc_slot_table
.slots
);
4969 session
->fc_slot_table
.slots
= NULL
;
4971 if (session
->bc_slot_table
.slots
!= NULL
) {
4972 kfree(session
->bc_slot_table
.slots
);
4973 session
->bc_slot_table
.slots
= NULL
;
4979 * Initialize slot table
4981 static int nfs4_init_slot_table(struct nfs4_slot_table
*tbl
,
4982 int max_slots
, int ivalue
)
4984 struct nfs4_slot
*slot
;
4987 BUG_ON(max_slots
> NFS4_MAX_SLOT_TABLE
);
4989 dprintk("--> %s: max_reqs=%u\n", __func__
, max_slots
);
4991 slot
= kcalloc(max_slots
, sizeof(struct nfs4_slot
), GFP_NOFS
);
4996 spin_lock(&tbl
->slot_tbl_lock
);
4997 tbl
->max_slots
= max_slots
;
4999 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
5000 spin_unlock(&tbl
->slot_tbl_lock
);
5001 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5002 tbl
, tbl
->slots
, tbl
->max_slots
);
5004 dprintk("<-- %s: return %d\n", __func__
, ret
);
5009 * Initialize the forechannel and backchannel tables
5011 static int nfs4_init_slot_tables(struct nfs4_session
*session
)
5013 struct nfs4_slot_table
*tbl
;
5016 tbl
= &session
->fc_slot_table
;
5017 if (tbl
->slots
== NULL
) {
5018 status
= nfs4_init_slot_table(tbl
,
5019 session
->fc_attrs
.max_reqs
, 1);
5024 tbl
= &session
->bc_slot_table
;
5025 if (tbl
->slots
== NULL
) {
5026 status
= nfs4_init_slot_table(tbl
,
5027 session
->bc_attrs
.max_reqs
, 0);
5029 nfs4_destroy_slot_tables(session
);
5035 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5037 struct nfs4_session
*session
;
5038 struct nfs4_slot_table
*tbl
;
5040 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5044 tbl
= &session
->fc_slot_table
;
5045 tbl
->highest_used_slotid
= -1;
5046 spin_lock_init(&tbl
->slot_tbl_lock
);
5047 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5048 init_completion(&tbl
->complete
);
5050 tbl
= &session
->bc_slot_table
;
5051 tbl
->highest_used_slotid
= -1;
5052 spin_lock_init(&tbl
->slot_tbl_lock
);
5053 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5054 init_completion(&tbl
->complete
);
5056 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5062 void nfs4_destroy_session(struct nfs4_session
*session
)
5064 nfs4_proc_destroy_session(session
);
5065 dprintk("%s Destroy backchannel for xprt %p\n",
5066 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
5067 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
5068 NFS41_BC_MIN_CALLBACKS
);
5069 nfs4_destroy_slot_tables(session
);
5074 * Initialize the values to be used by the client in CREATE_SESSION
5075 * If nfs4_init_session set the fore channel request and response sizes,
5078 * Set the back channel max_resp_sz_cached to zero to force the client to
5079 * always set csa_cachethis to FALSE because the current implementation
5080 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5082 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5084 struct nfs4_session
*session
= args
->client
->cl_session
;
5085 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5086 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5089 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5091 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5092 /* Fore channel attributes */
5093 args
->fc_attrs
.headerpadsz
= 0;
5094 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5095 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5096 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5097 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
5099 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5100 "max_ops=%u max_reqs=%u\n",
5102 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5103 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5105 /* Back channel attributes */
5106 args
->bc_attrs
.headerpadsz
= 0;
5107 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5108 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5109 args
->bc_attrs
.max_resp_sz_cached
= 0;
5110 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5111 args
->bc_attrs
.max_reqs
= 1;
5113 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5114 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5116 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5117 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5118 args
->bc_attrs
.max_reqs
);
5121 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5123 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5124 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5126 if (rcvd
->headerpadsz
> sent
->headerpadsz
)
5128 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5131 * Our requested max_ops is the minimum we need; we're not
5132 * prepared to break up compounds into smaller pieces than that.
5133 * So, no point even trying to continue if the server won't
5136 if (rcvd
->max_ops
< sent
->max_ops
)
5138 if (rcvd
->max_reqs
== 0)
5143 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5145 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5146 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5148 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5150 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5152 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5154 /* These would render the backchannel useless: */
5155 if (rcvd
->max_ops
== 0)
5157 if (rcvd
->max_reqs
== 0)
5162 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5163 struct nfs4_session
*session
)
5167 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5170 return nfs4_verify_back_channel_attrs(args
, session
);
5173 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
5175 struct nfs4_session
*session
= clp
->cl_session
;
5176 struct nfs41_create_session_args args
= {
5178 .cb_program
= NFS4_CALLBACK
,
5180 struct nfs41_create_session_res res
= {
5183 struct rpc_message msg
= {
5184 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5190 nfs4_init_channel_attrs(&args
);
5191 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5193 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5196 /* Verify the session's negotiated channel_attrs values */
5197 status
= nfs4_verify_channel_attrs(&args
, session
);
5199 /* Increment the clientid slot sequence id */
5207 * Issues a CREATE_SESSION operation to the server.
5208 * It is the responsibility of the caller to verify the session is
5209 * expired before calling this routine.
5211 int nfs4_proc_create_session(struct nfs_client
*clp
)
5215 struct nfs4_session
*session
= clp
->cl_session
;
5217 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5219 status
= _nfs4_proc_create_session(clp
);
5223 /* Init and reset the fore channel */
5224 status
= nfs4_init_slot_tables(session
);
5225 dprintk("slot table initialization returned %d\n", status
);
5228 status
= nfs4_reset_slot_tables(session
);
5229 dprintk("slot table reset returned %d\n", status
);
5233 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5234 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5235 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5237 dprintk("<-- %s\n", __func__
);
5242 * Issue the over-the-wire RPC DESTROY_SESSION.
5243 * The caller must serialize access to this routine.
5245 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
5248 struct rpc_message msg
;
5250 dprintk("--> nfs4_proc_destroy_session\n");
5252 /* session is still being setup */
5253 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5256 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
5257 msg
.rpc_argp
= session
;
5258 msg
.rpc_resp
= NULL
;
5259 msg
.rpc_cred
= NULL
;
5260 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5264 "Got error %d from the server on DESTROY_SESSION. "
5265 "Session has been destroyed regardless...\n", status
);
5267 dprintk("<-- nfs4_proc_destroy_session\n");
5271 int nfs4_init_session(struct nfs_server
*server
)
5273 struct nfs_client
*clp
= server
->nfs_client
;
5274 struct nfs4_session
*session
;
5275 unsigned int rsize
, wsize
;
5278 if (!nfs4_has_session(clp
))
5281 session
= clp
->cl_session
;
5282 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5285 rsize
= server
->rsize
;
5287 rsize
= NFS_MAX_FILE_IO_SIZE
;
5288 wsize
= server
->wsize
;
5290 wsize
= NFS_MAX_FILE_IO_SIZE
;
5292 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5293 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5295 ret
= nfs4_recover_expired_lease(server
);
5297 ret
= nfs4_check_client_ready(clp
);
5301 int nfs4_init_ds_session(struct nfs_client
*clp
)
5303 struct nfs4_session
*session
= clp
->cl_session
;
5306 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5309 ret
= nfs4_client_recover_expired_lease(clp
);
5311 /* Test for the DS role */
5312 if (!is_ds_client(clp
))
5315 ret
= nfs4_check_client_ready(clp
);
5319 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5323 * Renew the cl_session lease.
5325 struct nfs4_sequence_data
{
5326 struct nfs_client
*clp
;
5327 struct nfs4_sequence_args args
;
5328 struct nfs4_sequence_res res
;
5331 static void nfs41_sequence_release(void *data
)
5333 struct nfs4_sequence_data
*calldata
= data
;
5334 struct nfs_client
*clp
= calldata
->clp
;
5336 if (atomic_read(&clp
->cl_count
) > 1)
5337 nfs4_schedule_state_renewal(clp
);
5338 nfs_put_client(clp
);
5342 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5344 switch(task
->tk_status
) {
5345 case -NFS4ERR_DELAY
:
5346 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5349 nfs4_schedule_lease_recovery(clp
);
5354 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5356 struct nfs4_sequence_data
*calldata
= data
;
5357 struct nfs_client
*clp
= calldata
->clp
;
5359 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5362 if (task
->tk_status
< 0) {
5363 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5364 if (atomic_read(&clp
->cl_count
) == 1)
5367 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5368 rpc_restart_call_prepare(task
);
5372 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5374 dprintk("<-- %s\n", __func__
);
5377 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5379 struct nfs4_sequence_data
*calldata
= data
;
5380 struct nfs_client
*clp
= calldata
->clp
;
5381 struct nfs4_sequence_args
*args
;
5382 struct nfs4_sequence_res
*res
;
5384 args
= task
->tk_msg
.rpc_argp
;
5385 res
= task
->tk_msg
.rpc_resp
;
5387 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, 0, task
))
5389 rpc_call_start(task
);
5392 static const struct rpc_call_ops nfs41_sequence_ops
= {
5393 .rpc_call_done
= nfs41_sequence_call_done
,
5394 .rpc_call_prepare
= nfs41_sequence_prepare
,
5395 .rpc_release
= nfs41_sequence_release
,
5398 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5400 struct nfs4_sequence_data
*calldata
;
5401 struct rpc_message msg
= {
5402 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5405 struct rpc_task_setup task_setup_data
= {
5406 .rpc_client
= clp
->cl_rpcclient
,
5407 .rpc_message
= &msg
,
5408 .callback_ops
= &nfs41_sequence_ops
,
5409 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5412 if (!atomic_inc_not_zero(&clp
->cl_count
))
5413 return ERR_PTR(-EIO
);
5414 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5415 if (calldata
== NULL
) {
5416 nfs_put_client(clp
);
5417 return ERR_PTR(-ENOMEM
);
5419 msg
.rpc_argp
= &calldata
->args
;
5420 msg
.rpc_resp
= &calldata
->res
;
5421 calldata
->clp
= clp
;
5422 task_setup_data
.callback_data
= calldata
;
5424 return rpc_run_task(&task_setup_data
);
5427 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5429 struct rpc_task
*task
;
5432 task
= _nfs41_proc_sequence(clp
, cred
);
5434 ret
= PTR_ERR(task
);
5436 rpc_put_task_async(task
);
5437 dprintk("<-- %s status=%d\n", __func__
, ret
);
5441 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5443 struct rpc_task
*task
;
5446 task
= _nfs41_proc_sequence(clp
, cred
);
5448 ret
= PTR_ERR(task
);
5451 ret
= rpc_wait_for_completion_task(task
);
5453 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5455 if (task
->tk_status
== 0)
5456 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5457 ret
= task
->tk_status
;
5461 dprintk("<-- %s status=%d\n", __func__
, ret
);
5465 struct nfs4_reclaim_complete_data
{
5466 struct nfs_client
*clp
;
5467 struct nfs41_reclaim_complete_args arg
;
5468 struct nfs41_reclaim_complete_res res
;
5471 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5473 struct nfs4_reclaim_complete_data
*calldata
= data
;
5475 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5476 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5477 &calldata
->arg
.seq_args
,
5478 &calldata
->res
.seq_res
, 0, task
))
5481 rpc_call_start(task
);
5484 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5486 switch(task
->tk_status
) {
5488 case -NFS4ERR_COMPLETE_ALREADY
:
5489 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5491 case -NFS4ERR_DELAY
:
5492 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5494 case -NFS4ERR_RETRY_UNCACHED_REP
:
5497 nfs4_schedule_lease_recovery(clp
);
5502 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5504 struct nfs4_reclaim_complete_data
*calldata
= data
;
5505 struct nfs_client
*clp
= calldata
->clp
;
5506 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5508 dprintk("--> %s\n", __func__
);
5509 if (!nfs41_sequence_done(task
, res
))
5512 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5513 rpc_restart_call_prepare(task
);
5516 dprintk("<-- %s\n", __func__
);
5519 static void nfs4_free_reclaim_complete_data(void *data
)
5521 struct nfs4_reclaim_complete_data
*calldata
= data
;
5526 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5527 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5528 .rpc_call_done
= nfs4_reclaim_complete_done
,
5529 .rpc_release
= nfs4_free_reclaim_complete_data
,
5533 * Issue a global reclaim complete.
5535 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5537 struct nfs4_reclaim_complete_data
*calldata
;
5538 struct rpc_task
*task
;
5539 struct rpc_message msg
= {
5540 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5542 struct rpc_task_setup task_setup_data
= {
5543 .rpc_client
= clp
->cl_rpcclient
,
5544 .rpc_message
= &msg
,
5545 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5546 .flags
= RPC_TASK_ASYNC
,
5548 int status
= -ENOMEM
;
5550 dprintk("--> %s\n", __func__
);
5551 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5552 if (calldata
== NULL
)
5554 calldata
->clp
= clp
;
5555 calldata
->arg
.one_fs
= 0;
5557 msg
.rpc_argp
= &calldata
->arg
;
5558 msg
.rpc_resp
= &calldata
->res
;
5559 task_setup_data
.callback_data
= calldata
;
5560 task
= rpc_run_task(&task_setup_data
);
5562 status
= PTR_ERR(task
);
5565 status
= nfs4_wait_for_completion_rpc_task(task
);
5567 status
= task
->tk_status
;
5571 dprintk("<-- %s status=%d\n", __func__
, status
);
5576 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
5578 struct nfs4_layoutget
*lgp
= calldata
;
5579 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5581 dprintk("--> %s\n", __func__
);
5582 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
5583 * right now covering the LAYOUTGET we are about to send.
5584 * However, that is not so catastrophic, and there seems
5585 * to be no way to prevent it completely.
5587 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
5588 &lgp
->res
.seq_res
, 0, task
))
5590 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
5591 NFS_I(lgp
->args
.inode
)->layout
,
5592 lgp
->args
.ctx
->state
)) {
5593 rpc_exit(task
, NFS4_OK
);
5596 rpc_call_start(task
);
5599 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
5601 struct nfs4_layoutget
*lgp
= calldata
;
5602 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5604 dprintk("--> %s\n", __func__
);
5606 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
5609 switch (task
->tk_status
) {
5612 case -NFS4ERR_LAYOUTTRYLATER
:
5613 case -NFS4ERR_RECALLCONFLICT
:
5614 task
->tk_status
= -NFS4ERR_DELAY
;
5617 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5618 rpc_restart_call_prepare(task
);
5622 dprintk("<-- %s\n", __func__
);
5625 static void nfs4_layoutget_release(void *calldata
)
5627 struct nfs4_layoutget
*lgp
= calldata
;
5629 dprintk("--> %s\n", __func__
);
5630 put_nfs_open_context(lgp
->args
.ctx
);
5632 dprintk("<-- %s\n", __func__
);
5635 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
5636 .rpc_call_prepare
= nfs4_layoutget_prepare
,
5637 .rpc_call_done
= nfs4_layoutget_done
,
5638 .rpc_release
= nfs4_layoutget_release
,
5641 int nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
)
5643 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5644 struct rpc_task
*task
;
5645 struct rpc_message msg
= {
5646 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
5647 .rpc_argp
= &lgp
->args
,
5648 .rpc_resp
= &lgp
->res
,
5650 struct rpc_task_setup task_setup_data
= {
5651 .rpc_client
= server
->client
,
5652 .rpc_message
= &msg
,
5653 .callback_ops
= &nfs4_layoutget_call_ops
,
5654 .callback_data
= lgp
,
5655 .flags
= RPC_TASK_ASYNC
,
5659 dprintk("--> %s\n", __func__
);
5661 lgp
->res
.layoutp
= &lgp
->args
.layout
;
5662 lgp
->res
.seq_res
.sr_slot
= NULL
;
5663 task
= rpc_run_task(&task_setup_data
);
5665 return PTR_ERR(task
);
5666 status
= nfs4_wait_for_completion_rpc_task(task
);
5668 status
= task
->tk_status
;
5670 status
= pnfs_layout_process(lgp
);
5672 dprintk("<-- %s status=%d\n", __func__
, status
);
5677 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
5679 struct nfs4_layoutreturn
*lrp
= calldata
;
5681 dprintk("--> %s\n", __func__
);
5682 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
5683 &lrp
->res
.seq_res
, 0, task
))
5685 rpc_call_start(task
);
5688 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
5690 struct nfs4_layoutreturn
*lrp
= calldata
;
5691 struct nfs_server
*server
;
5693 dprintk("--> %s\n", __func__
);
5695 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
5698 server
= NFS_SERVER(lrp
->args
.inode
);
5699 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5700 nfs_restart_rpc(task
, lrp
->clp
);
5703 if (task
->tk_status
== 0) {
5704 struct pnfs_layout_hdr
*lo
= NFS_I(lrp
->args
.inode
)->layout
;
5706 if (lrp
->res
.lrs_present
) {
5707 spin_lock(&lo
->plh_inode
->i_lock
);
5708 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
5709 spin_unlock(&lo
->plh_inode
->i_lock
);
5711 BUG_ON(!list_empty(&lo
->plh_segs
));
5713 dprintk("<-- %s\n", __func__
);
5716 static void nfs4_layoutreturn_release(void *calldata
)
5718 struct nfs4_layoutreturn
*lrp
= calldata
;
5720 dprintk("--> %s\n", __func__
);
5721 put_layout_hdr(NFS_I(lrp
->args
.inode
)->layout
);
5723 dprintk("<-- %s\n", __func__
);
5726 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
5727 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
5728 .rpc_call_done
= nfs4_layoutreturn_done
,
5729 .rpc_release
= nfs4_layoutreturn_release
,
5732 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
5734 struct rpc_task
*task
;
5735 struct rpc_message msg
= {
5736 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
5737 .rpc_argp
= &lrp
->args
,
5738 .rpc_resp
= &lrp
->res
,
5740 struct rpc_task_setup task_setup_data
= {
5741 .rpc_client
= lrp
->clp
->cl_rpcclient
,
5742 .rpc_message
= &msg
,
5743 .callback_ops
= &nfs4_layoutreturn_call_ops
,
5744 .callback_data
= lrp
,
5748 dprintk("--> %s\n", __func__
);
5749 task
= rpc_run_task(&task_setup_data
);
5751 return PTR_ERR(task
);
5752 status
= task
->tk_status
;
5753 dprintk("<-- %s status=%d\n", __func__
, status
);
5759 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5761 struct nfs4_getdeviceinfo_args args
= {
5764 struct nfs4_getdeviceinfo_res res
= {
5767 struct rpc_message msg
= {
5768 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
5774 dprintk("--> %s\n", __func__
);
5775 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5776 dprintk("<-- %s status=%d\n", __func__
, status
);
5781 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5783 struct nfs4_exception exception
= { };
5787 err
= nfs4_handle_exception(server
,
5788 _nfs4_proc_getdeviceinfo(server
, pdev
),
5790 } while (exception
.retry
);
5793 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
5795 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
5797 struct nfs4_layoutcommit_data
*data
= calldata
;
5798 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
5800 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
5801 &data
->res
.seq_res
, 1, task
))
5803 rpc_call_start(task
);
5807 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
5809 struct nfs4_layoutcommit_data
*data
= calldata
;
5810 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
5812 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5815 switch (task
->tk_status
) { /* Just ignore these failures */
5816 case NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
5817 case NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
5818 case NFS4ERR_BADLAYOUT
: /* no layout */
5819 case NFS4ERR_GRACE
: /* loca_recalim always false */
5820 task
->tk_status
= 0;
5823 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5824 nfs_restart_rpc(task
, server
->nfs_client
);
5828 if (task
->tk_status
== 0)
5829 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
5833 static void nfs4_layoutcommit_release(void *calldata
)
5835 struct nfs4_layoutcommit_data
*data
= calldata
;
5837 /* Matched by references in pnfs_set_layoutcommit */
5838 put_lseg(data
->lseg
);
5839 put_rpccred(data
->cred
);
5843 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
5844 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
5845 .rpc_call_done
= nfs4_layoutcommit_done
,
5846 .rpc_release
= nfs4_layoutcommit_release
,
5850 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
5852 struct rpc_message msg
= {
5853 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
5854 .rpc_argp
= &data
->args
,
5855 .rpc_resp
= &data
->res
,
5856 .rpc_cred
= data
->cred
,
5858 struct rpc_task_setup task_setup_data
= {
5859 .task
= &data
->task
,
5860 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
5861 .rpc_message
= &msg
,
5862 .callback_ops
= &nfs4_layoutcommit_ops
,
5863 .callback_data
= data
,
5864 .flags
= RPC_TASK_ASYNC
,
5866 struct rpc_task
*task
;
5869 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
5870 "lbw: %llu inode %lu\n",
5871 data
->task
.tk_pid
, sync
,
5872 data
->args
.lastbytewritten
,
5873 data
->args
.inode
->i_ino
);
5875 task
= rpc_run_task(&task_setup_data
);
5877 return PTR_ERR(task
);
5880 status
= nfs4_wait_for_completion_rpc_task(task
);
5883 status
= task
->tk_status
;
5885 dprintk("%s: status %d\n", __func__
, status
);
5889 #endif /* CONFIG_NFS_V4_1 */
5891 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
5892 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5893 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5894 .recover_open
= nfs4_open_reclaim
,
5895 .recover_lock
= nfs4_lock_reclaim
,
5896 .establish_clid
= nfs4_init_clientid
,
5897 .get_clid_cred
= nfs4_get_setclientid_cred
,
5900 #if defined(CONFIG_NFS_V4_1)
5901 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
5902 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5903 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5904 .recover_open
= nfs4_open_reclaim
,
5905 .recover_lock
= nfs4_lock_reclaim
,
5906 .establish_clid
= nfs41_init_clientid
,
5907 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5908 .reclaim_complete
= nfs41_proc_reclaim_complete
,
5910 #endif /* CONFIG_NFS_V4_1 */
5912 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
5913 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5914 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5915 .recover_open
= nfs4_open_expired
,
5916 .recover_lock
= nfs4_lock_expired
,
5917 .establish_clid
= nfs4_init_clientid
,
5918 .get_clid_cred
= nfs4_get_setclientid_cred
,
5921 #if defined(CONFIG_NFS_V4_1)
5922 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
5923 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5924 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5925 .recover_open
= nfs4_open_expired
,
5926 .recover_lock
= nfs4_lock_expired
,
5927 .establish_clid
= nfs41_init_clientid
,
5928 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5930 #endif /* CONFIG_NFS_V4_1 */
5932 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
5933 .sched_state_renewal
= nfs4_proc_async_renew
,
5934 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
5935 .renew_lease
= nfs4_proc_renew
,
5938 #if defined(CONFIG_NFS_V4_1)
5939 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
5940 .sched_state_renewal
= nfs41_proc_async_sequence
,
5941 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
5942 .renew_lease
= nfs4_proc_sequence
,
5946 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
5948 .call_sync
= _nfs4_call_sync
,
5949 .validate_stateid
= nfs4_validate_delegation_stateid
,
5950 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
5951 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
5952 .state_renewal_ops
= &nfs40_state_renewal_ops
,
5955 #if defined(CONFIG_NFS_V4_1)
5956 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
5958 .call_sync
= _nfs4_call_sync_session
,
5959 .validate_stateid
= nfs41_validate_delegation_stateid
,
5960 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
5961 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
5962 .state_renewal_ops
= &nfs41_state_renewal_ops
,
5966 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
5967 [0] = &nfs_v4_0_minor_ops
,
5968 #if defined(CONFIG_NFS_V4_1)
5969 [1] = &nfs_v4_1_minor_ops
,
5973 static const struct inode_operations nfs4_file_inode_operations
= {
5974 .permission
= nfs_permission
,
5975 .getattr
= nfs_getattr
,
5976 .setattr
= nfs_setattr
,
5977 .getxattr
= generic_getxattr
,
5978 .setxattr
= generic_setxattr
,
5979 .listxattr
= generic_listxattr
,
5980 .removexattr
= generic_removexattr
,
5983 const struct nfs_rpc_ops nfs_v4_clientops
= {
5984 .version
= 4, /* protocol version */
5985 .dentry_ops
= &nfs4_dentry_operations
,
5986 .dir_inode_ops
= &nfs4_dir_inode_operations
,
5987 .file_inode_ops
= &nfs4_file_inode_operations
,
5988 .getroot
= nfs4_proc_get_root
,
5989 .getattr
= nfs4_proc_getattr
,
5990 .setattr
= nfs4_proc_setattr
,
5991 .lookupfh
= nfs4_proc_lookupfh
,
5992 .lookup
= nfs4_proc_lookup
,
5993 .access
= nfs4_proc_access
,
5994 .readlink
= nfs4_proc_readlink
,
5995 .create
= nfs4_proc_create
,
5996 .remove
= nfs4_proc_remove
,
5997 .unlink_setup
= nfs4_proc_unlink_setup
,
5998 .unlink_done
= nfs4_proc_unlink_done
,
5999 .rename
= nfs4_proc_rename
,
6000 .rename_setup
= nfs4_proc_rename_setup
,
6001 .rename_done
= nfs4_proc_rename_done
,
6002 .link
= nfs4_proc_link
,
6003 .symlink
= nfs4_proc_symlink
,
6004 .mkdir
= nfs4_proc_mkdir
,
6005 .rmdir
= nfs4_proc_remove
,
6006 .readdir
= nfs4_proc_readdir
,
6007 .mknod
= nfs4_proc_mknod
,
6008 .statfs
= nfs4_proc_statfs
,
6009 .fsinfo
= nfs4_proc_fsinfo
,
6010 .pathconf
= nfs4_proc_pathconf
,
6011 .set_capabilities
= nfs4_server_capabilities
,
6012 .decode_dirent
= nfs4_decode_dirent
,
6013 .read_setup
= nfs4_proc_read_setup
,
6014 .read_done
= nfs4_read_done
,
6015 .write_setup
= nfs4_proc_write_setup
,
6016 .write_done
= nfs4_write_done
,
6017 .commit_setup
= nfs4_proc_commit_setup
,
6018 .commit_done
= nfs4_commit_done
,
6019 .lock
= nfs4_proc_lock
,
6020 .clear_acl_cache
= nfs4_zap_acl_attr
,
6021 .close_context
= nfs4_close_context
,
6022 .open_context
= nfs4_atomic_open
,
6023 .init_client
= nfs4_init_client
,
6024 .secinfo
= nfs4_proc_secinfo
,
6027 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6028 .prefix
= XATTR_NAME_NFSV4_ACL
,
6029 .list
= nfs4_xattr_list_nfs4_acl
,
6030 .get
= nfs4_xattr_get_nfs4_acl
,
6031 .set
= nfs4_xattr_set_nfs4_acl
,
6034 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6035 &nfs4_xattr_nfs4_acl_handler
,