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 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3180 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3182 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3183 nfs_restart_rpc(task
, server
->nfs_client
);
3187 nfs_invalidate_atime(data
->inode
);
3188 if (task
->tk_status
> 0)
3189 renew_lease(server
, data
->timestamp
);
3193 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3196 dprintk("--> %s\n", __func__
);
3198 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3201 return data
->read_done_cb(task
, data
);
3204 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3206 data
->timestamp
= jiffies
;
3207 data
->read_done_cb
= nfs4_read_done_cb
;
3208 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3211 /* Reset the the nfs_read_data to send the read to the MDS. */
3212 void nfs4_reset_read(struct rpc_task
*task
, struct nfs_read_data
*data
)
3214 dprintk("%s Reset task for i/o through\n", __func__
);
3215 put_lseg(data
->lseg
);
3217 /* offsets will differ in the dense stripe case */
3218 data
->args
.offset
= data
->mds_offset
;
3219 data
->ds_clp
= NULL
;
3220 data
->args
.fh
= NFS_FH(data
->inode
);
3221 data
->read_done_cb
= nfs4_read_done_cb
;
3222 task
->tk_ops
= data
->mds_ops
;
3223 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3225 EXPORT_SYMBOL_GPL(nfs4_reset_read
);
3227 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3229 struct inode
*inode
= data
->inode
;
3231 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3232 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3235 if (task
->tk_status
>= 0) {
3236 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3237 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3242 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3244 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3246 return data
->write_done_cb(task
, data
);
3249 /* Reset the the nfs_write_data to send the write to the MDS. */
3250 void nfs4_reset_write(struct rpc_task
*task
, struct nfs_write_data
*data
)
3252 dprintk("%s Reset task for i/o through\n", __func__
);
3253 put_lseg(data
->lseg
);
3255 data
->ds_clp
= NULL
;
3256 data
->write_done_cb
= nfs4_write_done_cb
;
3257 data
->args
.fh
= NFS_FH(data
->inode
);
3258 data
->args
.bitmask
= data
->res
.server
->cache_consistency_bitmask
;
3259 data
->args
.offset
= data
->mds_offset
;
3260 data
->res
.fattr
= &data
->fattr
;
3261 task
->tk_ops
= data
->mds_ops
;
3262 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3264 EXPORT_SYMBOL_GPL(nfs4_reset_write
);
3266 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3268 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3271 data
->args
.bitmask
= NULL
;
3272 data
->res
.fattr
= NULL
;
3274 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3275 if (!data
->write_done_cb
)
3276 data
->write_done_cb
= nfs4_write_done_cb
;
3277 data
->res
.server
= server
;
3278 data
->timestamp
= jiffies
;
3280 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3283 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3285 struct inode
*inode
= data
->inode
;
3287 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3288 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3291 nfs_refresh_inode(inode
, data
->res
.fattr
);
3295 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3297 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3299 return data
->write_done_cb(task
, data
);
3302 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3304 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3307 data
->args
.bitmask
= NULL
;
3308 data
->res
.fattr
= NULL
;
3310 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3311 if (!data
->write_done_cb
)
3312 data
->write_done_cb
= nfs4_commit_done_cb
;
3313 data
->res
.server
= server
;
3314 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3317 struct nfs4_renewdata
{
3318 struct nfs_client
*client
;
3319 unsigned long timestamp
;
3323 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3324 * standalone procedure for queueing an asynchronous RENEW.
3326 static void nfs4_renew_release(void *calldata
)
3328 struct nfs4_renewdata
*data
= calldata
;
3329 struct nfs_client
*clp
= data
->client
;
3331 if (atomic_read(&clp
->cl_count
) > 1)
3332 nfs4_schedule_state_renewal(clp
);
3333 nfs_put_client(clp
);
3337 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3339 struct nfs4_renewdata
*data
= calldata
;
3340 struct nfs_client
*clp
= data
->client
;
3341 unsigned long timestamp
= data
->timestamp
;
3343 if (task
->tk_status
< 0) {
3344 /* Unless we're shutting down, schedule state recovery! */
3345 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) != 0)
3346 nfs4_schedule_lease_recovery(clp
);
3349 do_renew_lease(clp
, timestamp
);
3352 static const struct rpc_call_ops nfs4_renew_ops
= {
3353 .rpc_call_done
= nfs4_renew_done
,
3354 .rpc_release
= nfs4_renew_release
,
3357 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3359 struct rpc_message msg
= {
3360 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3364 struct nfs4_renewdata
*data
;
3366 if (!atomic_inc_not_zero(&clp
->cl_count
))
3368 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3372 data
->timestamp
= jiffies
;
3373 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3374 &nfs4_renew_ops
, data
);
3377 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3379 struct rpc_message msg
= {
3380 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3384 unsigned long now
= jiffies
;
3387 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3390 do_renew_lease(clp
, now
);
3394 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3396 return (server
->caps
& NFS_CAP_ACLS
)
3397 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3398 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3401 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3402 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3405 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3407 static void buf_to_pages(const void *buf
, size_t buflen
,
3408 struct page
**pages
, unsigned int *pgbase
)
3410 const void *p
= buf
;
3412 *pgbase
= offset_in_page(buf
);
3414 while (p
< buf
+ buflen
) {
3415 *(pages
++) = virt_to_page(p
);
3416 p
+= PAGE_CACHE_SIZE
;
3420 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3421 struct page
**pages
, unsigned int *pgbase
)
3423 struct page
*newpage
, **spages
;
3429 len
= min_t(size_t, PAGE_CACHE_SIZE
, buflen
);
3430 newpage
= alloc_page(GFP_KERNEL
);
3432 if (newpage
== NULL
)
3434 memcpy(page_address(newpage
), buf
, len
);
3439 } while (buflen
!= 0);
3445 __free_page(spages
[rc
-1]);
3449 struct nfs4_cached_acl
{
3455 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3457 struct nfs_inode
*nfsi
= NFS_I(inode
);
3459 spin_lock(&inode
->i_lock
);
3460 kfree(nfsi
->nfs4_acl
);
3461 nfsi
->nfs4_acl
= acl
;
3462 spin_unlock(&inode
->i_lock
);
3465 static void nfs4_zap_acl_attr(struct inode
*inode
)
3467 nfs4_set_cached_acl(inode
, NULL
);
3470 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3472 struct nfs_inode
*nfsi
= NFS_I(inode
);
3473 struct nfs4_cached_acl
*acl
;
3476 spin_lock(&inode
->i_lock
);
3477 acl
= nfsi
->nfs4_acl
;
3480 if (buf
== NULL
) /* user is just asking for length */
3482 if (acl
->cached
== 0)
3484 ret
= -ERANGE
; /* see getxattr(2) man page */
3485 if (acl
->len
> buflen
)
3487 memcpy(buf
, acl
->data
, acl
->len
);
3491 spin_unlock(&inode
->i_lock
);
3495 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3497 struct nfs4_cached_acl
*acl
;
3499 if (buf
&& acl_len
<= PAGE_SIZE
) {
3500 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3504 memcpy(acl
->data
, buf
, acl_len
);
3506 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3513 nfs4_set_cached_acl(inode
, acl
);
3516 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3518 struct page
*pages
[NFS4ACL_MAXPAGES
];
3519 struct nfs_getaclargs args
= {
3520 .fh
= NFS_FH(inode
),
3524 struct nfs_getaclres res
= {
3528 struct rpc_message msg
= {
3529 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3533 struct page
*localpage
= NULL
;
3536 if (buflen
< PAGE_SIZE
) {
3537 /* As long as we're doing a round trip to the server anyway,
3538 * let's be prepared for a page of acl data. */
3539 localpage
= alloc_page(GFP_KERNEL
);
3540 resp_buf
= page_address(localpage
);
3541 if (localpage
== NULL
)
3543 args
.acl_pages
[0] = localpage
;
3544 args
.acl_pgbase
= 0;
3545 args
.acl_len
= PAGE_SIZE
;
3548 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
3550 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3553 if (res
.acl_len
> args
.acl_len
)
3554 nfs4_write_cached_acl(inode
, NULL
, res
.acl_len
);
3556 nfs4_write_cached_acl(inode
, resp_buf
, res
.acl_len
);
3559 if (res
.acl_len
> buflen
)
3562 memcpy(buf
, resp_buf
, res
.acl_len
);
3567 __free_page(localpage
);
3571 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3573 struct nfs4_exception exception
= { };
3576 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3579 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3580 } while (exception
.retry
);
3584 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3586 struct nfs_server
*server
= NFS_SERVER(inode
);
3589 if (!nfs4_server_supports_acls(server
))
3591 ret
= nfs_revalidate_inode(server
, inode
);
3594 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3595 nfs_zap_acl_cache(inode
);
3596 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3599 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3602 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3604 struct nfs_server
*server
= NFS_SERVER(inode
);
3605 struct page
*pages
[NFS4ACL_MAXPAGES
];
3606 struct nfs_setaclargs arg
= {
3607 .fh
= NFS_FH(inode
),
3611 struct nfs_setaclres res
;
3612 struct rpc_message msg
= {
3613 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3619 if (!nfs4_server_supports_acls(server
))
3621 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3624 nfs_inode_return_delegation(inode
);
3625 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3628 * Free each page after tx, so the only ref left is
3629 * held by the network stack
3632 put_page(pages
[i
-1]);
3635 * Acl update can result in inode attribute update.
3636 * so mark the attribute cache invalid.
3638 spin_lock(&inode
->i_lock
);
3639 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3640 spin_unlock(&inode
->i_lock
);
3641 nfs_access_zap_cache(inode
);
3642 nfs_zap_acl_cache(inode
);
3646 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3648 struct nfs4_exception exception
= { };
3651 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3652 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3654 } while (exception
.retry
);
3659 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3661 struct nfs_client
*clp
= server
->nfs_client
;
3663 if (task
->tk_status
>= 0)
3665 switch(task
->tk_status
) {
3666 case -NFS4ERR_ADMIN_REVOKED
:
3667 case -NFS4ERR_BAD_STATEID
:
3668 case -NFS4ERR_OPENMODE
:
3671 nfs4_schedule_stateid_recovery(server
, state
);
3672 goto wait_on_recovery
;
3673 case -NFS4ERR_STALE_STATEID
:
3674 case -NFS4ERR_STALE_CLIENTID
:
3675 case -NFS4ERR_EXPIRED
:
3676 nfs4_schedule_lease_recovery(clp
);
3677 goto wait_on_recovery
;
3678 #if defined(CONFIG_NFS_V4_1)
3679 case -NFS4ERR_BADSESSION
:
3680 case -NFS4ERR_BADSLOT
:
3681 case -NFS4ERR_BAD_HIGH_SLOT
:
3682 case -NFS4ERR_DEADSESSION
:
3683 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3684 case -NFS4ERR_SEQ_FALSE_RETRY
:
3685 case -NFS4ERR_SEQ_MISORDERED
:
3686 dprintk("%s ERROR %d, Reset session\n", __func__
,
3688 nfs4_schedule_session_recovery(clp
->cl_session
);
3689 task
->tk_status
= 0;
3691 #endif /* CONFIG_NFS_V4_1 */
3692 case -NFS4ERR_DELAY
:
3693 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3694 case -NFS4ERR_GRACE
:
3696 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3697 task
->tk_status
= 0;
3699 case -NFS4ERR_RETRY_UNCACHED_REP
:
3700 case -NFS4ERR_OLD_STATEID
:
3701 task
->tk_status
= 0;
3704 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3707 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3708 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3709 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3710 task
->tk_status
= 0;
3714 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
3715 unsigned short port
, struct rpc_cred
*cred
,
3716 struct nfs4_setclientid_res
*res
)
3718 nfs4_verifier sc_verifier
;
3719 struct nfs4_setclientid setclientid
= {
3720 .sc_verifier
= &sc_verifier
,
3722 .sc_cb_ident
= clp
->cl_cb_ident
,
3724 struct rpc_message msg
= {
3725 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3726 .rpc_argp
= &setclientid
,
3734 p
= (__be32
*)sc_verifier
.data
;
3735 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3736 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3739 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3740 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3742 rpc_peeraddr2str(clp
->cl_rpcclient
,
3744 rpc_peeraddr2str(clp
->cl_rpcclient
,
3746 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3747 clp
->cl_id_uniquifier
);
3748 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3749 sizeof(setclientid
.sc_netid
),
3750 rpc_peeraddr2str(clp
->cl_rpcclient
,
3751 RPC_DISPLAY_NETID
));
3752 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3753 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3754 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3756 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3757 if (status
!= -NFS4ERR_CLID_INUSE
)
3760 ++clp
->cl_id_uniquifier
;
3764 ssleep(clp
->cl_lease_time
/ HZ
+ 1);
3769 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3770 struct nfs4_setclientid_res
*arg
,
3771 struct rpc_cred
*cred
)
3773 struct nfs_fsinfo fsinfo
;
3774 struct rpc_message msg
= {
3775 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3777 .rpc_resp
= &fsinfo
,
3784 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3786 spin_lock(&clp
->cl_lock
);
3787 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3788 clp
->cl_last_renewal
= now
;
3789 spin_unlock(&clp
->cl_lock
);
3794 struct nfs4_delegreturndata
{
3795 struct nfs4_delegreturnargs args
;
3796 struct nfs4_delegreturnres res
;
3798 nfs4_stateid stateid
;
3799 unsigned long timestamp
;
3800 struct nfs_fattr fattr
;
3804 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3806 struct nfs4_delegreturndata
*data
= calldata
;
3808 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3811 switch (task
->tk_status
) {
3812 case -NFS4ERR_STALE_STATEID
:
3813 case -NFS4ERR_EXPIRED
:
3815 renew_lease(data
->res
.server
, data
->timestamp
);
3818 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
3820 nfs_restart_rpc(task
, data
->res
.server
->nfs_client
);
3824 data
->rpc_status
= task
->tk_status
;
3827 static void nfs4_delegreturn_release(void *calldata
)
3832 #if defined(CONFIG_NFS_V4_1)
3833 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3835 struct nfs4_delegreturndata
*d_data
;
3837 d_data
= (struct nfs4_delegreturndata
*)data
;
3839 if (nfs4_setup_sequence(d_data
->res
.server
,
3840 &d_data
->args
.seq_args
,
3841 &d_data
->res
.seq_res
, 1, task
))
3843 rpc_call_start(task
);
3845 #endif /* CONFIG_NFS_V4_1 */
3847 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3848 #if defined(CONFIG_NFS_V4_1)
3849 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3850 #endif /* CONFIG_NFS_V4_1 */
3851 .rpc_call_done
= nfs4_delegreturn_done
,
3852 .rpc_release
= nfs4_delegreturn_release
,
3855 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3857 struct nfs4_delegreturndata
*data
;
3858 struct nfs_server
*server
= NFS_SERVER(inode
);
3859 struct rpc_task
*task
;
3860 struct rpc_message msg
= {
3861 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3864 struct rpc_task_setup task_setup_data
= {
3865 .rpc_client
= server
->client
,
3866 .rpc_message
= &msg
,
3867 .callback_ops
= &nfs4_delegreturn_ops
,
3868 .flags
= RPC_TASK_ASYNC
,
3872 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
3875 data
->args
.fhandle
= &data
->fh
;
3876 data
->args
.stateid
= &data
->stateid
;
3877 data
->args
.bitmask
= server
->attr_bitmask
;
3878 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3879 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3880 data
->res
.fattr
= &data
->fattr
;
3881 data
->res
.server
= server
;
3882 nfs_fattr_init(data
->res
.fattr
);
3883 data
->timestamp
= jiffies
;
3884 data
->rpc_status
= 0;
3886 task_setup_data
.callback_data
= data
;
3887 msg
.rpc_argp
= &data
->args
;
3888 msg
.rpc_resp
= &data
->res
;
3889 task
= rpc_run_task(&task_setup_data
);
3891 return PTR_ERR(task
);
3894 status
= nfs4_wait_for_completion_rpc_task(task
);
3897 status
= data
->rpc_status
;
3900 nfs_refresh_inode(inode
, &data
->fattr
);
3906 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3908 struct nfs_server
*server
= NFS_SERVER(inode
);
3909 struct nfs4_exception exception
= { };
3912 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3914 case -NFS4ERR_STALE_STATEID
:
3915 case -NFS4ERR_EXPIRED
:
3919 err
= nfs4_handle_exception(server
, err
, &exception
);
3920 } while (exception
.retry
);
3924 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3925 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3928 * sleep, with exponential backoff, and retry the LOCK operation.
3930 static unsigned long
3931 nfs4_set_lock_task_retry(unsigned long timeout
)
3933 schedule_timeout_killable(timeout
);
3935 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3936 return NFS4_LOCK_MAXTIMEOUT
;
3940 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3942 struct inode
*inode
= state
->inode
;
3943 struct nfs_server
*server
= NFS_SERVER(inode
);
3944 struct nfs_client
*clp
= server
->nfs_client
;
3945 struct nfs_lockt_args arg
= {
3946 .fh
= NFS_FH(inode
),
3949 struct nfs_lockt_res res
= {
3952 struct rpc_message msg
= {
3953 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3956 .rpc_cred
= state
->owner
->so_cred
,
3958 struct nfs4_lock_state
*lsp
;
3961 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3962 status
= nfs4_set_lock_state(state
, request
);
3965 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3966 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3967 arg
.lock_owner
.s_dev
= server
->s_dev
;
3968 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3971 request
->fl_type
= F_UNLCK
;
3973 case -NFS4ERR_DENIED
:
3976 request
->fl_ops
->fl_release_private(request
);
3981 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3983 struct nfs4_exception exception
= { };
3987 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3988 _nfs4_proc_getlk(state
, cmd
, request
),
3990 } while (exception
.retry
);
3994 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3997 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3999 res
= posix_lock_file_wait(file
, fl
);
4002 res
= flock_lock_file_wait(file
, fl
);
4010 struct nfs4_unlockdata
{
4011 struct nfs_locku_args arg
;
4012 struct nfs_locku_res res
;
4013 struct nfs4_lock_state
*lsp
;
4014 struct nfs_open_context
*ctx
;
4015 struct file_lock fl
;
4016 const struct nfs_server
*server
;
4017 unsigned long timestamp
;
4020 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4021 struct nfs_open_context
*ctx
,
4022 struct nfs4_lock_state
*lsp
,
4023 struct nfs_seqid
*seqid
)
4025 struct nfs4_unlockdata
*p
;
4026 struct inode
*inode
= lsp
->ls_state
->inode
;
4028 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4031 p
->arg
.fh
= NFS_FH(inode
);
4033 p
->arg
.seqid
= seqid
;
4034 p
->res
.seqid
= seqid
;
4035 p
->arg
.stateid
= &lsp
->ls_stateid
;
4037 atomic_inc(&lsp
->ls_count
);
4038 /* Ensure we don't close file until we're done freeing locks! */
4039 p
->ctx
= get_nfs_open_context(ctx
);
4040 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4041 p
->server
= NFS_SERVER(inode
);
4045 static void nfs4_locku_release_calldata(void *data
)
4047 struct nfs4_unlockdata
*calldata
= data
;
4048 nfs_free_seqid(calldata
->arg
.seqid
);
4049 nfs4_put_lock_state(calldata
->lsp
);
4050 put_nfs_open_context(calldata
->ctx
);
4054 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4056 struct nfs4_unlockdata
*calldata
= data
;
4058 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4060 switch (task
->tk_status
) {
4062 memcpy(calldata
->lsp
->ls_stateid
.data
,
4063 calldata
->res
.stateid
.data
,
4064 sizeof(calldata
->lsp
->ls_stateid
.data
));
4065 renew_lease(calldata
->server
, calldata
->timestamp
);
4067 case -NFS4ERR_BAD_STATEID
:
4068 case -NFS4ERR_OLD_STATEID
:
4069 case -NFS4ERR_STALE_STATEID
:
4070 case -NFS4ERR_EXPIRED
:
4073 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4074 nfs_restart_rpc(task
,
4075 calldata
->server
->nfs_client
);
4079 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4081 struct nfs4_unlockdata
*calldata
= data
;
4083 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4085 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
4086 /* Note: exit _without_ running nfs4_locku_done */
4087 task
->tk_action
= NULL
;
4090 calldata
->timestamp
= jiffies
;
4091 if (nfs4_setup_sequence(calldata
->server
,
4092 &calldata
->arg
.seq_args
,
4093 &calldata
->res
.seq_res
, 1, task
))
4095 rpc_call_start(task
);
4098 static const struct rpc_call_ops nfs4_locku_ops
= {
4099 .rpc_call_prepare
= nfs4_locku_prepare
,
4100 .rpc_call_done
= nfs4_locku_done
,
4101 .rpc_release
= nfs4_locku_release_calldata
,
4104 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4105 struct nfs_open_context
*ctx
,
4106 struct nfs4_lock_state
*lsp
,
4107 struct nfs_seqid
*seqid
)
4109 struct nfs4_unlockdata
*data
;
4110 struct rpc_message msg
= {
4111 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4112 .rpc_cred
= ctx
->cred
,
4114 struct rpc_task_setup task_setup_data
= {
4115 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4116 .rpc_message
= &msg
,
4117 .callback_ops
= &nfs4_locku_ops
,
4118 .workqueue
= nfsiod_workqueue
,
4119 .flags
= RPC_TASK_ASYNC
,
4122 /* Ensure this is an unlock - when canceling a lock, the
4123 * canceled lock is passed in, and it won't be an unlock.
4125 fl
->fl_type
= F_UNLCK
;
4127 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4129 nfs_free_seqid(seqid
);
4130 return ERR_PTR(-ENOMEM
);
4133 msg
.rpc_argp
= &data
->arg
;
4134 msg
.rpc_resp
= &data
->res
;
4135 task_setup_data
.callback_data
= data
;
4136 return rpc_run_task(&task_setup_data
);
4139 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4141 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4142 struct nfs_seqid
*seqid
;
4143 struct nfs4_lock_state
*lsp
;
4144 struct rpc_task
*task
;
4146 unsigned char fl_flags
= request
->fl_flags
;
4148 status
= nfs4_set_lock_state(state
, request
);
4149 /* Unlock _before_ we do the RPC call */
4150 request
->fl_flags
|= FL_EXISTS
;
4151 down_read(&nfsi
->rwsem
);
4152 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4153 up_read(&nfsi
->rwsem
);
4156 up_read(&nfsi
->rwsem
);
4159 /* Is this a delegated lock? */
4160 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4162 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4163 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4167 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4168 status
= PTR_ERR(task
);
4171 status
= nfs4_wait_for_completion_rpc_task(task
);
4174 request
->fl_flags
= fl_flags
;
4178 struct nfs4_lockdata
{
4179 struct nfs_lock_args arg
;
4180 struct nfs_lock_res res
;
4181 struct nfs4_lock_state
*lsp
;
4182 struct nfs_open_context
*ctx
;
4183 struct file_lock fl
;
4184 unsigned long timestamp
;
4187 struct nfs_server
*server
;
4190 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4191 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4194 struct nfs4_lockdata
*p
;
4195 struct inode
*inode
= lsp
->ls_state
->inode
;
4196 struct nfs_server
*server
= NFS_SERVER(inode
);
4198 p
= kzalloc(sizeof(*p
), gfp_mask
);
4202 p
->arg
.fh
= NFS_FH(inode
);
4204 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4205 if (p
->arg
.open_seqid
== NULL
)
4207 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4208 if (p
->arg
.lock_seqid
== NULL
)
4209 goto out_free_seqid
;
4210 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4211 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4212 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
4213 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4214 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4217 atomic_inc(&lsp
->ls_count
);
4218 p
->ctx
= get_nfs_open_context(ctx
);
4219 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4222 nfs_free_seqid(p
->arg
.open_seqid
);
4228 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4230 struct nfs4_lockdata
*data
= calldata
;
4231 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4233 dprintk("%s: begin!\n", __func__
);
4234 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4236 /* Do we need to do an open_to_lock_owner? */
4237 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4238 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4240 data
->arg
.open_stateid
= &state
->stateid
;
4241 data
->arg
.new_lock_owner
= 1;
4242 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4244 data
->arg
.new_lock_owner
= 0;
4245 data
->timestamp
= jiffies
;
4246 if (nfs4_setup_sequence(data
->server
,
4247 &data
->arg
.seq_args
,
4248 &data
->res
.seq_res
, 1, task
))
4250 rpc_call_start(task
);
4251 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4254 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4256 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4257 nfs4_lock_prepare(task
, calldata
);
4260 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4262 struct nfs4_lockdata
*data
= calldata
;
4264 dprintk("%s: begin!\n", __func__
);
4266 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4269 data
->rpc_status
= task
->tk_status
;
4270 if (data
->arg
.new_lock_owner
!= 0) {
4271 if (data
->rpc_status
== 0)
4272 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4276 if (data
->rpc_status
== 0) {
4277 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
4278 sizeof(data
->lsp
->ls_stateid
.data
));
4279 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4280 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
4283 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4286 static void nfs4_lock_release(void *calldata
)
4288 struct nfs4_lockdata
*data
= calldata
;
4290 dprintk("%s: begin!\n", __func__
);
4291 nfs_free_seqid(data
->arg
.open_seqid
);
4292 if (data
->cancelled
!= 0) {
4293 struct rpc_task
*task
;
4294 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4295 data
->arg
.lock_seqid
);
4297 rpc_put_task_async(task
);
4298 dprintk("%s: cancelling lock!\n", __func__
);
4300 nfs_free_seqid(data
->arg
.lock_seqid
);
4301 nfs4_put_lock_state(data
->lsp
);
4302 put_nfs_open_context(data
->ctx
);
4304 dprintk("%s: done!\n", __func__
);
4307 static const struct rpc_call_ops nfs4_lock_ops
= {
4308 .rpc_call_prepare
= nfs4_lock_prepare
,
4309 .rpc_call_done
= nfs4_lock_done
,
4310 .rpc_release
= nfs4_lock_release
,
4313 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4314 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4315 .rpc_call_done
= nfs4_lock_done
,
4316 .rpc_release
= nfs4_lock_release
,
4319 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4322 case -NFS4ERR_ADMIN_REVOKED
:
4323 case -NFS4ERR_BAD_STATEID
:
4324 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4325 if (new_lock_owner
!= 0 ||
4326 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4327 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4329 case -NFS4ERR_STALE_STATEID
:
4330 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4331 case -NFS4ERR_EXPIRED
:
4332 nfs4_schedule_lease_recovery(server
->nfs_client
);
4336 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4338 struct nfs4_lockdata
*data
;
4339 struct rpc_task
*task
;
4340 struct rpc_message msg
= {
4341 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4342 .rpc_cred
= state
->owner
->so_cred
,
4344 struct rpc_task_setup task_setup_data
= {
4345 .rpc_client
= NFS_CLIENT(state
->inode
),
4346 .rpc_message
= &msg
,
4347 .callback_ops
= &nfs4_lock_ops
,
4348 .workqueue
= nfsiod_workqueue
,
4349 .flags
= RPC_TASK_ASYNC
,
4353 dprintk("%s: begin!\n", __func__
);
4354 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4355 fl
->fl_u
.nfs4_fl
.owner
,
4356 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4360 data
->arg
.block
= 1;
4361 if (recovery_type
> NFS_LOCK_NEW
) {
4362 if (recovery_type
== NFS_LOCK_RECLAIM
)
4363 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4364 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4366 msg
.rpc_argp
= &data
->arg
;
4367 msg
.rpc_resp
= &data
->res
;
4368 task_setup_data
.callback_data
= data
;
4369 task
= rpc_run_task(&task_setup_data
);
4371 return PTR_ERR(task
);
4372 ret
= nfs4_wait_for_completion_rpc_task(task
);
4374 ret
= data
->rpc_status
;
4376 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4377 data
->arg
.new_lock_owner
, ret
);
4379 data
->cancelled
= 1;
4381 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4385 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4387 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4388 struct nfs4_exception exception
= { };
4392 /* Cache the lock if possible... */
4393 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4395 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4396 if (err
!= -NFS4ERR_DELAY
)
4398 nfs4_handle_exception(server
, err
, &exception
);
4399 } while (exception
.retry
);
4403 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4405 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4406 struct nfs4_exception exception
= { };
4409 err
= nfs4_set_lock_state(state
, request
);
4413 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4415 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4419 case -NFS4ERR_GRACE
:
4420 case -NFS4ERR_DELAY
:
4421 nfs4_handle_exception(server
, err
, &exception
);
4424 } while (exception
.retry
);
4429 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4431 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4432 unsigned char fl_flags
= request
->fl_flags
;
4433 int status
= -ENOLCK
;
4435 if ((fl_flags
& FL_POSIX
) &&
4436 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4438 /* Is this a delegated open? */
4439 status
= nfs4_set_lock_state(state
, request
);
4442 request
->fl_flags
|= FL_ACCESS
;
4443 status
= do_vfs_lock(request
->fl_file
, request
);
4446 down_read(&nfsi
->rwsem
);
4447 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4448 /* Yes: cache locks! */
4449 /* ...but avoid races with delegation recall... */
4450 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4451 status
= do_vfs_lock(request
->fl_file
, request
);
4454 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4457 /* Note: we always want to sleep here! */
4458 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4459 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4460 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
4462 up_read(&nfsi
->rwsem
);
4464 request
->fl_flags
= fl_flags
;
4468 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4470 struct nfs4_exception exception
= { };
4474 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4475 if (err
== -NFS4ERR_DENIED
)
4477 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4479 } while (exception
.retry
);
4484 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4486 struct nfs_open_context
*ctx
;
4487 struct nfs4_state
*state
;
4488 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4491 /* verify open state */
4492 ctx
= nfs_file_open_context(filp
);
4495 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4498 if (IS_GETLK(cmd
)) {
4500 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4504 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4507 if (request
->fl_type
== F_UNLCK
) {
4509 return nfs4_proc_unlck(state
, cmd
, request
);
4516 status
= nfs4_proc_setlk(state
, cmd
, request
);
4517 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4519 timeout
= nfs4_set_lock_task_retry(timeout
);
4520 status
= -ERESTARTSYS
;
4523 } while(status
< 0);
4527 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4529 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4530 struct nfs4_exception exception
= { };
4533 err
= nfs4_set_lock_state(state
, fl
);
4537 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4540 printk(KERN_ERR
"%s: unhandled error %d.\n",
4545 case -NFS4ERR_EXPIRED
:
4546 case -NFS4ERR_STALE_CLIENTID
:
4547 case -NFS4ERR_STALE_STATEID
:
4548 nfs4_schedule_lease_recovery(server
->nfs_client
);
4550 case -NFS4ERR_BADSESSION
:
4551 case -NFS4ERR_BADSLOT
:
4552 case -NFS4ERR_BAD_HIGH_SLOT
:
4553 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4554 case -NFS4ERR_DEADSESSION
:
4555 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
4559 * The show must go on: exit, but mark the
4560 * stateid as needing recovery.
4562 case -NFS4ERR_ADMIN_REVOKED
:
4563 case -NFS4ERR_BAD_STATEID
:
4564 case -NFS4ERR_OPENMODE
:
4565 nfs4_schedule_stateid_recovery(server
, state
);
4570 * User RPCSEC_GSS context has expired.
4571 * We cannot recover this stateid now, so
4572 * skip it and allow recovery thread to
4578 case -NFS4ERR_DENIED
:
4579 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4582 case -NFS4ERR_DELAY
:
4585 err
= nfs4_handle_exception(server
, err
, &exception
);
4586 } while (exception
.retry
);
4591 static void nfs4_release_lockowner_release(void *calldata
)
4596 const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4597 .rpc_release
= nfs4_release_lockowner_release
,
4600 void nfs4_release_lockowner(const struct nfs4_lock_state
*lsp
)
4602 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4603 struct nfs_release_lockowner_args
*args
;
4604 struct rpc_message msg
= {
4605 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4608 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
4610 args
= kmalloc(sizeof(*args
), GFP_NOFS
);
4613 args
->lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4614 args
->lock_owner
.id
= lsp
->ls_id
.id
;
4615 args
->lock_owner
.s_dev
= server
->s_dev
;
4616 msg
.rpc_argp
= args
;
4617 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, args
);
4620 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4622 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
4623 const void *buf
, size_t buflen
,
4624 int flags
, int type
)
4626 if (strcmp(key
, "") != 0)
4629 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
4632 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
4633 void *buf
, size_t buflen
, int type
)
4635 if (strcmp(key
, "") != 0)
4638 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
4641 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
4642 size_t list_len
, const char *name
,
4643 size_t name_len
, int type
)
4645 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
4647 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4650 if (list
&& len
<= list_len
)
4651 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
4655 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4657 if (!((fattr
->valid
& NFS_ATTR_FATTR_FILEID
) &&
4658 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4659 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4662 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4663 NFS_ATTR_FATTR_NLINK
;
4664 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4668 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4669 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4671 struct nfs_server
*server
= NFS_SERVER(dir
);
4673 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4674 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
4676 struct nfs4_fs_locations_arg args
= {
4677 .dir_fh
= NFS_FH(dir
),
4682 struct nfs4_fs_locations_res res
= {
4683 .fs_locations
= fs_locations
,
4685 struct rpc_message msg
= {
4686 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4692 dprintk("%s: start\n", __func__
);
4693 nfs_fattr_init(&fs_locations
->fattr
);
4694 fs_locations
->server
= server
;
4695 fs_locations
->nlocations
= 0;
4696 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4697 nfs_fixup_referral_attributes(&fs_locations
->fattr
);
4698 dprintk("%s: returned status = %d\n", __func__
, status
);
4702 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4705 struct nfs4_secinfo_arg args
= {
4706 .dir_fh
= NFS_FH(dir
),
4709 struct nfs4_secinfo_res res
= {
4712 struct rpc_message msg
= {
4713 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
4718 dprintk("NFS call secinfo %s\n", name
->name
);
4719 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4720 dprintk("NFS reply secinfo: %d\n", status
);
4724 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4726 struct nfs4_exception exception
= { };
4729 err
= nfs4_handle_exception(NFS_SERVER(dir
),
4730 _nfs4_proc_secinfo(dir
, name
, flavors
),
4732 } while (exception
.retry
);
4736 #ifdef CONFIG_NFS_V4_1
4738 * Check the exchange flags returned by the server for invalid flags, having
4739 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
4742 static int nfs4_check_cl_exchange_flags(u32 flags
)
4744 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
4746 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
4747 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
4749 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
4753 return -NFS4ERR_INVAL
;
4757 * nfs4_proc_exchange_id()
4759 * Since the clientid has expired, all compounds using sessions
4760 * associated with the stale clientid will be returning
4761 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4762 * be in some phase of session reset.
4764 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4766 nfs4_verifier verifier
;
4767 struct nfs41_exchange_id_args args
= {
4769 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
4771 struct nfs41_exchange_id_res res
= {
4775 struct rpc_message msg
= {
4776 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4783 dprintk("--> %s\n", __func__
);
4784 BUG_ON(clp
== NULL
);
4786 p
= (u32
*)verifier
.data
;
4787 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4788 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4789 args
.verifier
= &verifier
;
4791 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4794 init_utsname()->nodename
,
4795 init_utsname()->domainname
,
4796 clp
->cl_rpcclient
->cl_auth
->au_flavor
);
4798 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4800 status
= nfs4_check_cl_exchange_flags(clp
->cl_exchange_flags
);
4801 dprintk("<-- %s status= %d\n", __func__
, status
);
4805 struct nfs4_get_lease_time_data
{
4806 struct nfs4_get_lease_time_args
*args
;
4807 struct nfs4_get_lease_time_res
*res
;
4808 struct nfs_client
*clp
;
4811 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4815 struct nfs4_get_lease_time_data
*data
=
4816 (struct nfs4_get_lease_time_data
*)calldata
;
4818 dprintk("--> %s\n", __func__
);
4819 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4820 /* just setup sequence, do not trigger session recovery
4821 since we're invoked within one */
4822 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4823 &data
->args
->la_seq_args
,
4824 &data
->res
->lr_seq_res
, 0, task
);
4826 BUG_ON(ret
== -EAGAIN
);
4827 rpc_call_start(task
);
4828 dprintk("<-- %s\n", __func__
);
4832 * Called from nfs4_state_manager thread for session setup, so don't recover
4833 * from sequence operation or clientid errors.
4835 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4837 struct nfs4_get_lease_time_data
*data
=
4838 (struct nfs4_get_lease_time_data
*)calldata
;
4840 dprintk("--> %s\n", __func__
);
4841 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
4843 switch (task
->tk_status
) {
4844 case -NFS4ERR_DELAY
:
4845 case -NFS4ERR_GRACE
:
4846 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
4847 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
4848 task
->tk_status
= 0;
4850 case -NFS4ERR_RETRY_UNCACHED_REP
:
4851 nfs_restart_rpc(task
, data
->clp
);
4854 dprintk("<-- %s\n", __func__
);
4857 struct rpc_call_ops nfs4_get_lease_time_ops
= {
4858 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
4859 .rpc_call_done
= nfs4_get_lease_time_done
,
4862 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
4864 struct rpc_task
*task
;
4865 struct nfs4_get_lease_time_args args
;
4866 struct nfs4_get_lease_time_res res
= {
4867 .lr_fsinfo
= fsinfo
,
4869 struct nfs4_get_lease_time_data data
= {
4874 struct rpc_message msg
= {
4875 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
4879 struct rpc_task_setup task_setup
= {
4880 .rpc_client
= clp
->cl_rpcclient
,
4881 .rpc_message
= &msg
,
4882 .callback_ops
= &nfs4_get_lease_time_ops
,
4883 .callback_data
= &data
,
4884 .flags
= RPC_TASK_TIMEOUT
,
4888 dprintk("--> %s\n", __func__
);
4889 task
= rpc_run_task(&task_setup
);
4892 status
= PTR_ERR(task
);
4894 status
= task
->tk_status
;
4897 dprintk("<-- %s return %d\n", __func__
, status
);
4903 * Reset a slot table
4905 static int nfs4_reset_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
4908 struct nfs4_slot
*new = NULL
;
4912 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
4913 max_reqs
, tbl
->max_slots
);
4915 /* Does the newly negotiated max_reqs match the existing slot table? */
4916 if (max_reqs
!= tbl
->max_slots
) {
4918 new = kmalloc(max_reqs
* sizeof(struct nfs4_slot
),
4925 spin_lock(&tbl
->slot_tbl_lock
);
4928 tbl
->max_slots
= max_reqs
;
4930 for (i
= 0; i
< tbl
->max_slots
; ++i
)
4931 tbl
->slots
[i
].seq_nr
= ivalue
;
4932 spin_unlock(&tbl
->slot_tbl_lock
);
4933 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4934 tbl
, tbl
->slots
, tbl
->max_slots
);
4936 dprintk("<-- %s: return %d\n", __func__
, ret
);
4941 * Reset the forechannel and backchannel slot tables
4943 static int nfs4_reset_slot_tables(struct nfs4_session
*session
)
4947 status
= nfs4_reset_slot_table(&session
->fc_slot_table
,
4948 session
->fc_attrs
.max_reqs
, 1);
4952 status
= nfs4_reset_slot_table(&session
->bc_slot_table
,
4953 session
->bc_attrs
.max_reqs
, 0);
4957 /* Destroy the slot table */
4958 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
4960 if (session
->fc_slot_table
.slots
!= NULL
) {
4961 kfree(session
->fc_slot_table
.slots
);
4962 session
->fc_slot_table
.slots
= NULL
;
4964 if (session
->bc_slot_table
.slots
!= NULL
) {
4965 kfree(session
->bc_slot_table
.slots
);
4966 session
->bc_slot_table
.slots
= NULL
;
4972 * Initialize slot table
4974 static int nfs4_init_slot_table(struct nfs4_slot_table
*tbl
,
4975 int max_slots
, int ivalue
)
4977 struct nfs4_slot
*slot
;
4980 BUG_ON(max_slots
> NFS4_MAX_SLOT_TABLE
);
4982 dprintk("--> %s: max_reqs=%u\n", __func__
, max_slots
);
4984 slot
= kcalloc(max_slots
, sizeof(struct nfs4_slot
), GFP_NOFS
);
4989 spin_lock(&tbl
->slot_tbl_lock
);
4990 tbl
->max_slots
= max_slots
;
4992 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
4993 spin_unlock(&tbl
->slot_tbl_lock
);
4994 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4995 tbl
, tbl
->slots
, tbl
->max_slots
);
4997 dprintk("<-- %s: return %d\n", __func__
, ret
);
5002 * Initialize the forechannel and backchannel tables
5004 static int nfs4_init_slot_tables(struct nfs4_session
*session
)
5006 struct nfs4_slot_table
*tbl
;
5009 tbl
= &session
->fc_slot_table
;
5010 if (tbl
->slots
== NULL
) {
5011 status
= nfs4_init_slot_table(tbl
,
5012 session
->fc_attrs
.max_reqs
, 1);
5017 tbl
= &session
->bc_slot_table
;
5018 if (tbl
->slots
== NULL
) {
5019 status
= nfs4_init_slot_table(tbl
,
5020 session
->bc_attrs
.max_reqs
, 0);
5022 nfs4_destroy_slot_tables(session
);
5028 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5030 struct nfs4_session
*session
;
5031 struct nfs4_slot_table
*tbl
;
5033 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5037 tbl
= &session
->fc_slot_table
;
5038 tbl
->highest_used_slotid
= -1;
5039 spin_lock_init(&tbl
->slot_tbl_lock
);
5040 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5041 init_completion(&tbl
->complete
);
5043 tbl
= &session
->bc_slot_table
;
5044 tbl
->highest_used_slotid
= -1;
5045 spin_lock_init(&tbl
->slot_tbl_lock
);
5046 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5047 init_completion(&tbl
->complete
);
5049 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5055 void nfs4_destroy_session(struct nfs4_session
*session
)
5057 nfs4_proc_destroy_session(session
);
5058 dprintk("%s Destroy backchannel for xprt %p\n",
5059 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
5060 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
5061 NFS41_BC_MIN_CALLBACKS
);
5062 nfs4_destroy_slot_tables(session
);
5067 * Initialize the values to be used by the client in CREATE_SESSION
5068 * If nfs4_init_session set the fore channel request and response sizes,
5071 * Set the back channel max_resp_sz_cached to zero to force the client to
5072 * always set csa_cachethis to FALSE because the current implementation
5073 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5075 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5077 struct nfs4_session
*session
= args
->client
->cl_session
;
5078 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5079 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5082 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5084 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5085 /* Fore channel attributes */
5086 args
->fc_attrs
.headerpadsz
= 0;
5087 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5088 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5089 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5090 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
5092 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5093 "max_ops=%u max_reqs=%u\n",
5095 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5096 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5098 /* Back channel attributes */
5099 args
->bc_attrs
.headerpadsz
= 0;
5100 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5101 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5102 args
->bc_attrs
.max_resp_sz_cached
= 0;
5103 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5104 args
->bc_attrs
.max_reqs
= 1;
5106 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5107 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5109 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5110 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5111 args
->bc_attrs
.max_reqs
);
5114 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5116 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5117 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5119 if (rcvd
->headerpadsz
> sent
->headerpadsz
)
5121 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5124 * Our requested max_ops is the minimum we need; we're not
5125 * prepared to break up compounds into smaller pieces than that.
5126 * So, no point even trying to continue if the server won't
5129 if (rcvd
->max_ops
< sent
->max_ops
)
5131 if (rcvd
->max_reqs
== 0)
5136 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5138 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5139 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5141 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5143 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5145 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5147 /* These would render the backchannel useless: */
5148 if (rcvd
->max_ops
== 0)
5150 if (rcvd
->max_reqs
== 0)
5155 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5156 struct nfs4_session
*session
)
5160 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5163 return nfs4_verify_back_channel_attrs(args
, session
);
5166 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
5168 struct nfs4_session
*session
= clp
->cl_session
;
5169 struct nfs41_create_session_args args
= {
5171 .cb_program
= NFS4_CALLBACK
,
5173 struct nfs41_create_session_res res
= {
5176 struct rpc_message msg
= {
5177 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5183 nfs4_init_channel_attrs(&args
);
5184 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5186 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5189 /* Verify the session's negotiated channel_attrs values */
5190 status
= nfs4_verify_channel_attrs(&args
, session
);
5192 /* Increment the clientid slot sequence id */
5200 * Issues a CREATE_SESSION operation to the server.
5201 * It is the responsibility of the caller to verify the session is
5202 * expired before calling this routine.
5204 int nfs4_proc_create_session(struct nfs_client
*clp
)
5208 struct nfs4_session
*session
= clp
->cl_session
;
5210 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5212 status
= _nfs4_proc_create_session(clp
);
5216 /* Init and reset the fore channel */
5217 status
= nfs4_init_slot_tables(session
);
5218 dprintk("slot table initialization returned %d\n", status
);
5221 status
= nfs4_reset_slot_tables(session
);
5222 dprintk("slot table reset returned %d\n", status
);
5226 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5227 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5228 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5230 dprintk("<-- %s\n", __func__
);
5235 * Issue the over-the-wire RPC DESTROY_SESSION.
5236 * The caller must serialize access to this routine.
5238 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
5241 struct rpc_message msg
;
5243 dprintk("--> nfs4_proc_destroy_session\n");
5245 /* session is still being setup */
5246 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5249 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
5250 msg
.rpc_argp
= session
;
5251 msg
.rpc_resp
= NULL
;
5252 msg
.rpc_cred
= NULL
;
5253 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5257 "Got error %d from the server on DESTROY_SESSION. "
5258 "Session has been destroyed regardless...\n", status
);
5260 dprintk("<-- nfs4_proc_destroy_session\n");
5264 int nfs4_init_session(struct nfs_server
*server
)
5266 struct nfs_client
*clp
= server
->nfs_client
;
5267 struct nfs4_session
*session
;
5268 unsigned int rsize
, wsize
;
5271 if (!nfs4_has_session(clp
))
5274 session
= clp
->cl_session
;
5275 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5278 rsize
= server
->rsize
;
5280 rsize
= NFS_MAX_FILE_IO_SIZE
;
5281 wsize
= server
->wsize
;
5283 wsize
= NFS_MAX_FILE_IO_SIZE
;
5285 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5286 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5288 ret
= nfs4_recover_expired_lease(server
);
5290 ret
= nfs4_check_client_ready(clp
);
5294 int nfs4_init_ds_session(struct nfs_client
*clp
)
5296 struct nfs4_session
*session
= clp
->cl_session
;
5299 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5302 ret
= nfs4_client_recover_expired_lease(clp
);
5304 /* Test for the DS role */
5305 if (!is_ds_client(clp
))
5308 ret
= nfs4_check_client_ready(clp
);
5312 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5316 * Renew the cl_session lease.
5318 struct nfs4_sequence_data
{
5319 struct nfs_client
*clp
;
5320 struct nfs4_sequence_args args
;
5321 struct nfs4_sequence_res res
;
5324 static void nfs41_sequence_release(void *data
)
5326 struct nfs4_sequence_data
*calldata
= data
;
5327 struct nfs_client
*clp
= calldata
->clp
;
5329 if (atomic_read(&clp
->cl_count
) > 1)
5330 nfs4_schedule_state_renewal(clp
);
5331 nfs_put_client(clp
);
5335 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5337 switch(task
->tk_status
) {
5338 case -NFS4ERR_DELAY
:
5339 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5342 nfs4_schedule_lease_recovery(clp
);
5347 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5349 struct nfs4_sequence_data
*calldata
= data
;
5350 struct nfs_client
*clp
= calldata
->clp
;
5352 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5355 if (task
->tk_status
< 0) {
5356 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5357 if (atomic_read(&clp
->cl_count
) == 1)
5360 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5361 rpc_restart_call_prepare(task
);
5365 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5367 dprintk("<-- %s\n", __func__
);
5370 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5372 struct nfs4_sequence_data
*calldata
= data
;
5373 struct nfs_client
*clp
= calldata
->clp
;
5374 struct nfs4_sequence_args
*args
;
5375 struct nfs4_sequence_res
*res
;
5377 args
= task
->tk_msg
.rpc_argp
;
5378 res
= task
->tk_msg
.rpc_resp
;
5380 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, 0, task
))
5382 rpc_call_start(task
);
5385 static const struct rpc_call_ops nfs41_sequence_ops
= {
5386 .rpc_call_done
= nfs41_sequence_call_done
,
5387 .rpc_call_prepare
= nfs41_sequence_prepare
,
5388 .rpc_release
= nfs41_sequence_release
,
5391 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5393 struct nfs4_sequence_data
*calldata
;
5394 struct rpc_message msg
= {
5395 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5398 struct rpc_task_setup task_setup_data
= {
5399 .rpc_client
= clp
->cl_rpcclient
,
5400 .rpc_message
= &msg
,
5401 .callback_ops
= &nfs41_sequence_ops
,
5402 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5405 if (!atomic_inc_not_zero(&clp
->cl_count
))
5406 return ERR_PTR(-EIO
);
5407 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5408 if (calldata
== NULL
) {
5409 nfs_put_client(clp
);
5410 return ERR_PTR(-ENOMEM
);
5412 msg
.rpc_argp
= &calldata
->args
;
5413 msg
.rpc_resp
= &calldata
->res
;
5414 calldata
->clp
= clp
;
5415 task_setup_data
.callback_data
= calldata
;
5417 return rpc_run_task(&task_setup_data
);
5420 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5422 struct rpc_task
*task
;
5425 task
= _nfs41_proc_sequence(clp
, cred
);
5427 ret
= PTR_ERR(task
);
5429 rpc_put_task_async(task
);
5430 dprintk("<-- %s status=%d\n", __func__
, ret
);
5434 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5436 struct rpc_task
*task
;
5439 task
= _nfs41_proc_sequence(clp
, cred
);
5441 ret
= PTR_ERR(task
);
5444 ret
= rpc_wait_for_completion_task(task
);
5446 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5448 if (task
->tk_status
== 0)
5449 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5450 ret
= task
->tk_status
;
5454 dprintk("<-- %s status=%d\n", __func__
, ret
);
5458 struct nfs4_reclaim_complete_data
{
5459 struct nfs_client
*clp
;
5460 struct nfs41_reclaim_complete_args arg
;
5461 struct nfs41_reclaim_complete_res res
;
5464 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5466 struct nfs4_reclaim_complete_data
*calldata
= data
;
5468 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5469 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5470 &calldata
->arg
.seq_args
,
5471 &calldata
->res
.seq_res
, 0, task
))
5474 rpc_call_start(task
);
5477 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5479 switch(task
->tk_status
) {
5481 case -NFS4ERR_COMPLETE_ALREADY
:
5482 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5484 case -NFS4ERR_DELAY
:
5485 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5487 case -NFS4ERR_RETRY_UNCACHED_REP
:
5490 nfs4_schedule_lease_recovery(clp
);
5495 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5497 struct nfs4_reclaim_complete_data
*calldata
= data
;
5498 struct nfs_client
*clp
= calldata
->clp
;
5499 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5501 dprintk("--> %s\n", __func__
);
5502 if (!nfs41_sequence_done(task
, res
))
5505 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5506 rpc_restart_call_prepare(task
);
5509 dprintk("<-- %s\n", __func__
);
5512 static void nfs4_free_reclaim_complete_data(void *data
)
5514 struct nfs4_reclaim_complete_data
*calldata
= data
;
5519 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5520 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5521 .rpc_call_done
= nfs4_reclaim_complete_done
,
5522 .rpc_release
= nfs4_free_reclaim_complete_data
,
5526 * Issue a global reclaim complete.
5528 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5530 struct nfs4_reclaim_complete_data
*calldata
;
5531 struct rpc_task
*task
;
5532 struct rpc_message msg
= {
5533 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5535 struct rpc_task_setup task_setup_data
= {
5536 .rpc_client
= clp
->cl_rpcclient
,
5537 .rpc_message
= &msg
,
5538 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5539 .flags
= RPC_TASK_ASYNC
,
5541 int status
= -ENOMEM
;
5543 dprintk("--> %s\n", __func__
);
5544 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5545 if (calldata
== NULL
)
5547 calldata
->clp
= clp
;
5548 calldata
->arg
.one_fs
= 0;
5550 msg
.rpc_argp
= &calldata
->arg
;
5551 msg
.rpc_resp
= &calldata
->res
;
5552 task_setup_data
.callback_data
= calldata
;
5553 task
= rpc_run_task(&task_setup_data
);
5555 status
= PTR_ERR(task
);
5558 status
= nfs4_wait_for_completion_rpc_task(task
);
5560 status
= task
->tk_status
;
5564 dprintk("<-- %s status=%d\n", __func__
, status
);
5569 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
5571 struct nfs4_layoutget
*lgp
= calldata
;
5572 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5574 dprintk("--> %s\n", __func__
);
5575 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
5576 * right now covering the LAYOUTGET we are about to send.
5577 * However, that is not so catastrophic, and there seems
5578 * to be no way to prevent it completely.
5580 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
5581 &lgp
->res
.seq_res
, 0, task
))
5583 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
5584 NFS_I(lgp
->args
.inode
)->layout
,
5585 lgp
->args
.ctx
->state
)) {
5586 rpc_exit(task
, NFS4_OK
);
5589 rpc_call_start(task
);
5592 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
5594 struct nfs4_layoutget
*lgp
= calldata
;
5595 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5597 dprintk("--> %s\n", __func__
);
5599 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
5602 switch (task
->tk_status
) {
5605 case -NFS4ERR_LAYOUTTRYLATER
:
5606 case -NFS4ERR_RECALLCONFLICT
:
5607 task
->tk_status
= -NFS4ERR_DELAY
;
5610 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5611 rpc_restart_call_prepare(task
);
5615 dprintk("<-- %s\n", __func__
);
5618 static void nfs4_layoutget_release(void *calldata
)
5620 struct nfs4_layoutget
*lgp
= calldata
;
5622 dprintk("--> %s\n", __func__
);
5623 put_nfs_open_context(lgp
->args
.ctx
);
5625 dprintk("<-- %s\n", __func__
);
5628 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
5629 .rpc_call_prepare
= nfs4_layoutget_prepare
,
5630 .rpc_call_done
= nfs4_layoutget_done
,
5631 .rpc_release
= nfs4_layoutget_release
,
5634 int nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
)
5636 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5637 struct rpc_task
*task
;
5638 struct rpc_message msg
= {
5639 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
5640 .rpc_argp
= &lgp
->args
,
5641 .rpc_resp
= &lgp
->res
,
5643 struct rpc_task_setup task_setup_data
= {
5644 .rpc_client
= server
->client
,
5645 .rpc_message
= &msg
,
5646 .callback_ops
= &nfs4_layoutget_call_ops
,
5647 .callback_data
= lgp
,
5648 .flags
= RPC_TASK_ASYNC
,
5652 dprintk("--> %s\n", __func__
);
5654 lgp
->res
.layoutp
= &lgp
->args
.layout
;
5655 lgp
->res
.seq_res
.sr_slot
= NULL
;
5656 task
= rpc_run_task(&task_setup_data
);
5658 return PTR_ERR(task
);
5659 status
= nfs4_wait_for_completion_rpc_task(task
);
5661 status
= task
->tk_status
;
5663 status
= pnfs_layout_process(lgp
);
5665 dprintk("<-- %s status=%d\n", __func__
, status
);
5670 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5672 struct nfs4_getdeviceinfo_args args
= {
5675 struct nfs4_getdeviceinfo_res res
= {
5678 struct rpc_message msg
= {
5679 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
5685 dprintk("--> %s\n", __func__
);
5686 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5687 dprintk("<-- %s status=%d\n", __func__
, status
);
5692 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5694 struct nfs4_exception exception
= { };
5698 err
= nfs4_handle_exception(server
,
5699 _nfs4_proc_getdeviceinfo(server
, pdev
),
5701 } while (exception
.retry
);
5704 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
5706 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
5708 struct nfs4_layoutcommit_data
*data
= calldata
;
5709 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
5711 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
5712 &data
->res
.seq_res
, 1, task
))
5714 rpc_call_start(task
);
5718 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
5720 struct nfs4_layoutcommit_data
*data
= calldata
;
5721 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
5723 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5726 switch (task
->tk_status
) { /* Just ignore these failures */
5727 case NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
5728 case NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
5729 case NFS4ERR_BADLAYOUT
: /* no layout */
5730 case NFS4ERR_GRACE
: /* loca_recalim always false */
5731 task
->tk_status
= 0;
5734 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5735 nfs_restart_rpc(task
, server
->nfs_client
);
5739 if (task
->tk_status
== 0)
5740 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
5744 static void nfs4_layoutcommit_release(void *calldata
)
5746 struct nfs4_layoutcommit_data
*data
= calldata
;
5748 /* Matched by references in pnfs_set_layoutcommit */
5749 put_lseg(data
->lseg
);
5750 put_rpccred(data
->cred
);
5754 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
5755 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
5756 .rpc_call_done
= nfs4_layoutcommit_done
,
5757 .rpc_release
= nfs4_layoutcommit_release
,
5761 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
5763 struct rpc_message msg
= {
5764 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
5765 .rpc_argp
= &data
->args
,
5766 .rpc_resp
= &data
->res
,
5767 .rpc_cred
= data
->cred
,
5769 struct rpc_task_setup task_setup_data
= {
5770 .task
= &data
->task
,
5771 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
5772 .rpc_message
= &msg
,
5773 .callback_ops
= &nfs4_layoutcommit_ops
,
5774 .callback_data
= data
,
5775 .flags
= RPC_TASK_ASYNC
,
5777 struct rpc_task
*task
;
5780 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
5781 "lbw: %llu inode %lu\n",
5782 data
->task
.tk_pid
, sync
,
5783 data
->args
.lastbytewritten
,
5784 data
->args
.inode
->i_ino
);
5786 task
= rpc_run_task(&task_setup_data
);
5788 return PTR_ERR(task
);
5791 status
= nfs4_wait_for_completion_rpc_task(task
);
5794 status
= task
->tk_status
;
5796 dprintk("%s: status %d\n", __func__
, status
);
5800 #endif /* CONFIG_NFS_V4_1 */
5802 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
5803 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5804 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5805 .recover_open
= nfs4_open_reclaim
,
5806 .recover_lock
= nfs4_lock_reclaim
,
5807 .establish_clid
= nfs4_init_clientid
,
5808 .get_clid_cred
= nfs4_get_setclientid_cred
,
5811 #if defined(CONFIG_NFS_V4_1)
5812 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
5813 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5814 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5815 .recover_open
= nfs4_open_reclaim
,
5816 .recover_lock
= nfs4_lock_reclaim
,
5817 .establish_clid
= nfs41_init_clientid
,
5818 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5819 .reclaim_complete
= nfs41_proc_reclaim_complete
,
5821 #endif /* CONFIG_NFS_V4_1 */
5823 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
5824 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5825 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5826 .recover_open
= nfs4_open_expired
,
5827 .recover_lock
= nfs4_lock_expired
,
5828 .establish_clid
= nfs4_init_clientid
,
5829 .get_clid_cred
= nfs4_get_setclientid_cred
,
5832 #if defined(CONFIG_NFS_V4_1)
5833 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
5834 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5835 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5836 .recover_open
= nfs4_open_expired
,
5837 .recover_lock
= nfs4_lock_expired
,
5838 .establish_clid
= nfs41_init_clientid
,
5839 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5841 #endif /* CONFIG_NFS_V4_1 */
5843 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
5844 .sched_state_renewal
= nfs4_proc_async_renew
,
5845 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
5846 .renew_lease
= nfs4_proc_renew
,
5849 #if defined(CONFIG_NFS_V4_1)
5850 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
5851 .sched_state_renewal
= nfs41_proc_async_sequence
,
5852 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
5853 .renew_lease
= nfs4_proc_sequence
,
5857 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
5859 .call_sync
= _nfs4_call_sync
,
5860 .validate_stateid
= nfs4_validate_delegation_stateid
,
5861 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
5862 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
5863 .state_renewal_ops
= &nfs40_state_renewal_ops
,
5866 #if defined(CONFIG_NFS_V4_1)
5867 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
5869 .call_sync
= _nfs4_call_sync_session
,
5870 .validate_stateid
= nfs41_validate_delegation_stateid
,
5871 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
5872 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
5873 .state_renewal_ops
= &nfs41_state_renewal_ops
,
5877 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
5878 [0] = &nfs_v4_0_minor_ops
,
5879 #if defined(CONFIG_NFS_V4_1)
5880 [1] = &nfs_v4_1_minor_ops
,
5884 static const struct inode_operations nfs4_file_inode_operations
= {
5885 .permission
= nfs_permission
,
5886 .getattr
= nfs_getattr
,
5887 .setattr
= nfs_setattr
,
5888 .getxattr
= generic_getxattr
,
5889 .setxattr
= generic_setxattr
,
5890 .listxattr
= generic_listxattr
,
5891 .removexattr
= generic_removexattr
,
5894 const struct nfs_rpc_ops nfs_v4_clientops
= {
5895 .version
= 4, /* protocol version */
5896 .dentry_ops
= &nfs4_dentry_operations
,
5897 .dir_inode_ops
= &nfs4_dir_inode_operations
,
5898 .file_inode_ops
= &nfs4_file_inode_operations
,
5899 .getroot
= nfs4_proc_get_root
,
5900 .getattr
= nfs4_proc_getattr
,
5901 .setattr
= nfs4_proc_setattr
,
5902 .lookupfh
= nfs4_proc_lookupfh
,
5903 .lookup
= nfs4_proc_lookup
,
5904 .access
= nfs4_proc_access
,
5905 .readlink
= nfs4_proc_readlink
,
5906 .create
= nfs4_proc_create
,
5907 .remove
= nfs4_proc_remove
,
5908 .unlink_setup
= nfs4_proc_unlink_setup
,
5909 .unlink_done
= nfs4_proc_unlink_done
,
5910 .rename
= nfs4_proc_rename
,
5911 .rename_setup
= nfs4_proc_rename_setup
,
5912 .rename_done
= nfs4_proc_rename_done
,
5913 .link
= nfs4_proc_link
,
5914 .symlink
= nfs4_proc_symlink
,
5915 .mkdir
= nfs4_proc_mkdir
,
5916 .rmdir
= nfs4_proc_remove
,
5917 .readdir
= nfs4_proc_readdir
,
5918 .mknod
= nfs4_proc_mknod
,
5919 .statfs
= nfs4_proc_statfs
,
5920 .fsinfo
= nfs4_proc_fsinfo
,
5921 .pathconf
= nfs4_proc_pathconf
,
5922 .set_capabilities
= nfs4_server_capabilities
,
5923 .decode_dirent
= nfs4_decode_dirent
,
5924 .read_setup
= nfs4_proc_read_setup
,
5925 .read_done
= nfs4_read_done
,
5926 .write_setup
= nfs4_proc_write_setup
,
5927 .write_done
= nfs4_write_done
,
5928 .commit_setup
= nfs4_proc_commit_setup
,
5929 .commit_done
= nfs4_commit_done
,
5930 .lock
= nfs4_proc_lock
,
5931 .clear_acl_cache
= nfs4_zap_acl_attr
,
5932 .close_context
= nfs4_close_context
,
5933 .open_context
= nfs4_atomic_open
,
5934 .init_client
= nfs4_init_client
,
5935 .secinfo
= nfs4_proc_secinfo
,
5938 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
5939 .prefix
= XATTR_NAME_NFSV4_ACL
,
5940 .list
= nfs4_xattr_list_nfs4_acl
,
5941 .get
= nfs4_xattr_get_nfs4_acl
,
5942 .set
= nfs4_xattr_set_nfs4_acl
,
5945 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
5946 &nfs4_xattr_nfs4_acl_handler
,