4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/sunrpc/gss_api.h>
47 #include <linux/nfs.h>
48 #include <linux/nfs4.h>
49 #include <linux/nfs_fs.h>
50 #include <linux/nfs_page.h>
51 #include <linux/nfs_mount.h>
52 #include <linux/namei.h>
53 #include <linux/mount.h>
54 #include <linux/module.h>
55 #include <linux/nfs_idmap.h>
56 #include <linux/sunrpc/bc_xprt.h>
57 #include <linux/xattr.h>
58 #include <linux/utsname.h>
59 #include <linux/freezer.h>
62 #include "delegation.h"
68 #define NFSDBG_FACILITY NFSDBG_PROC
70 #define NFS4_POLL_RETRY_MIN (HZ/10)
71 #define NFS4_POLL_RETRY_MAX (15*HZ)
73 #define NFS4_MAX_LOOP_ON_RECOVER (10)
75 static unsigned short max_session_slots
= NFS4_DEF_SLOT_TABLE_SIZE
;
78 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
79 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
80 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
81 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
82 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
83 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
84 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
85 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
86 struct nfs4_state
*state
);
87 #ifdef CONFIG_NFS_V4_1
88 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*);
89 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*);
91 /* Prevent leaks of NFSv4 errors into userland */
92 static int nfs4_map_errors(int err
)
97 case -NFS4ERR_RESOURCE
:
99 case -NFS4ERR_WRONGSEC
:
101 case -NFS4ERR_BADOWNER
:
102 case -NFS4ERR_BADNAME
:
105 dprintk("%s could not handle NFSv4 error %d\n",
113 * This is our standard bitmap for GETATTR requests.
115 const u32 nfs4_fattr_bitmap
[2] = {
117 | FATTR4_WORD0_CHANGE
120 | FATTR4_WORD0_FILEID
,
122 | FATTR4_WORD1_NUMLINKS
124 | FATTR4_WORD1_OWNER_GROUP
125 | FATTR4_WORD1_RAWDEV
126 | FATTR4_WORD1_SPACE_USED
127 | FATTR4_WORD1_TIME_ACCESS
128 | FATTR4_WORD1_TIME_METADATA
129 | FATTR4_WORD1_TIME_MODIFY
132 const u32 nfs4_statfs_bitmap
[2] = {
133 FATTR4_WORD0_FILES_AVAIL
134 | FATTR4_WORD0_FILES_FREE
135 | FATTR4_WORD0_FILES_TOTAL
,
136 FATTR4_WORD1_SPACE_AVAIL
137 | FATTR4_WORD1_SPACE_FREE
138 | FATTR4_WORD1_SPACE_TOTAL
141 const u32 nfs4_pathconf_bitmap
[2] = {
143 | FATTR4_WORD0_MAXNAME
,
147 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
148 | FATTR4_WORD0_MAXREAD
149 | FATTR4_WORD0_MAXWRITE
150 | FATTR4_WORD0_LEASE_TIME
,
151 FATTR4_WORD1_TIME_DELTA
152 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
153 FATTR4_WORD2_LAYOUT_BLKSIZE
156 const u32 nfs4_fs_locations_bitmap
[2] = {
158 | FATTR4_WORD0_CHANGE
161 | FATTR4_WORD0_FILEID
162 | FATTR4_WORD0_FS_LOCATIONS
,
164 | FATTR4_WORD1_NUMLINKS
166 | FATTR4_WORD1_OWNER_GROUP
167 | FATTR4_WORD1_RAWDEV
168 | FATTR4_WORD1_SPACE_USED
169 | FATTR4_WORD1_TIME_ACCESS
170 | FATTR4_WORD1_TIME_METADATA
171 | FATTR4_WORD1_TIME_MODIFY
172 | FATTR4_WORD1_MOUNTED_ON_FILEID
175 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
176 struct nfs4_readdir_arg
*readdir
)
180 BUG_ON(readdir
->count
< 80);
182 readdir
->cookie
= cookie
;
183 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
188 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
193 * NFSv4 servers do not return entries for '.' and '..'
194 * Therefore, we fake these entries here. We let '.'
195 * have cookie 0 and '..' have cookie 1. Note that
196 * when talking to the server, we always send cookie 0
199 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
202 *p
++ = xdr_one
; /* next */
203 *p
++ = xdr_zero
; /* cookie, first word */
204 *p
++ = xdr_one
; /* cookie, second word */
205 *p
++ = xdr_one
; /* entry len */
206 memcpy(p
, ".\0\0\0", 4); /* entry */
208 *p
++ = xdr_one
; /* bitmap length */
209 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
210 *p
++ = htonl(8); /* attribute buffer length */
211 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
214 *p
++ = xdr_one
; /* next */
215 *p
++ = xdr_zero
; /* cookie, first word */
216 *p
++ = xdr_two
; /* cookie, second word */
217 *p
++ = xdr_two
; /* entry len */
218 memcpy(p
, "..\0\0", 4); /* entry */
220 *p
++ = xdr_one
; /* bitmap length */
221 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
222 *p
++ = htonl(8); /* attribute buffer length */
223 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
225 readdir
->pgbase
= (char *)p
- (char *)start
;
226 readdir
->count
-= readdir
->pgbase
;
227 kunmap_atomic(start
, KM_USER0
);
230 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
236 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
237 nfs_wait_bit_killable
, TASK_KILLABLE
);
241 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
248 *timeout
= NFS4_POLL_RETRY_MIN
;
249 if (*timeout
> NFS4_POLL_RETRY_MAX
)
250 *timeout
= NFS4_POLL_RETRY_MAX
;
251 freezable_schedule_timeout_killable(*timeout
);
252 if (fatal_signal_pending(current
))
258 /* This is the error handling routine for processes that are allowed
261 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
263 struct nfs_client
*clp
= server
->nfs_client
;
264 struct nfs4_state
*state
= exception
->state
;
267 exception
->retry
= 0;
271 case -NFS4ERR_DELEG_REVOKED
:
272 case -NFS4ERR_ADMIN_REVOKED
:
273 case -NFS4ERR_BAD_STATEID
:
275 nfs_remove_bad_delegation(state
->inode
);
276 case -NFS4ERR_OPENMODE
:
279 nfs4_schedule_stateid_recovery(server
, state
);
280 goto wait_on_recovery
;
281 case -NFS4ERR_EXPIRED
:
283 nfs4_schedule_stateid_recovery(server
, state
);
284 case -NFS4ERR_STALE_STATEID
:
285 case -NFS4ERR_STALE_CLIENTID
:
286 nfs4_schedule_lease_recovery(clp
);
287 goto wait_on_recovery
;
288 #if defined(CONFIG_NFS_V4_1)
289 case -NFS4ERR_BADSESSION
:
290 case -NFS4ERR_BADSLOT
:
291 case -NFS4ERR_BAD_HIGH_SLOT
:
292 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
293 case -NFS4ERR_DEADSESSION
:
294 case -NFS4ERR_SEQ_FALSE_RETRY
:
295 case -NFS4ERR_SEQ_MISORDERED
:
296 dprintk("%s ERROR: %d Reset session\n", __func__
,
298 nfs4_schedule_session_recovery(clp
->cl_session
);
299 exception
->retry
= 1;
301 #endif /* defined(CONFIG_NFS_V4_1) */
302 case -NFS4ERR_FILE_OPEN
:
303 if (exception
->timeout
> HZ
) {
304 /* We have retried a decent amount, time to
313 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
316 case -NFS4ERR_RETRY_UNCACHED_REP
:
317 case -NFS4ERR_OLD_STATEID
:
318 exception
->retry
= 1;
320 case -NFS4ERR_BADOWNER
:
321 /* The following works around a Linux server bug! */
322 case -NFS4ERR_BADNAME
:
323 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
324 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
325 exception
->retry
= 1;
326 printk(KERN_WARNING
"NFS: v4 server %s "
327 "does not accept raw "
329 "Reenabling the idmapper.\n",
330 server
->nfs_client
->cl_hostname
);
333 /* We failed to handle the error */
334 return nfs4_map_errors(ret
);
336 ret
= nfs4_wait_clnt_recover(clp
);
338 exception
->retry
= 1;
343 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
345 spin_lock(&clp
->cl_lock
);
346 if (time_before(clp
->cl_last_renewal
,timestamp
))
347 clp
->cl_last_renewal
= timestamp
;
348 spin_unlock(&clp
->cl_lock
);
351 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
353 do_renew_lease(server
->nfs_client
, timestamp
);
356 #if defined(CONFIG_NFS_V4_1)
359 * nfs4_free_slot - free a slot and efficiently update slot table.
361 * freeing a slot is trivially done by clearing its respective bit
363 * If the freed slotid equals highest_used_slotid we want to update it
364 * so that the server would be able to size down the slot table if needed,
365 * otherwise we know that the highest_used_slotid is still in use.
366 * When updating highest_used_slotid there may be "holes" in the bitmap
367 * so we need to scan down from highest_used_slotid to 0 looking for the now
368 * highest slotid in use.
369 * If none found, highest_used_slotid is set to NFS4_NO_SLOT.
371 * Must be called while holding tbl->slot_tbl_lock
374 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u32 slotid
)
376 BUG_ON(slotid
>= NFS4_MAX_SLOT_TABLE
);
377 /* clear used bit in bitmap */
378 __clear_bit(slotid
, tbl
->used_slots
);
380 /* update highest_used_slotid when it is freed */
381 if (slotid
== tbl
->highest_used_slotid
) {
382 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
383 if (slotid
< tbl
->max_slots
)
384 tbl
->highest_used_slotid
= slotid
;
386 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
388 dprintk("%s: slotid %u highest_used_slotid %d\n", __func__
,
389 slotid
, tbl
->highest_used_slotid
);
392 bool nfs4_set_task_privileged(struct rpc_task
*task
, void *dummy
)
394 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
399 * Signal state manager thread if session fore channel is drained
401 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
403 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
404 rpc_wake_up_first(&ses
->fc_slot_table
.slot_tbl_waitq
,
405 nfs4_set_task_privileged
, NULL
);
409 if (ses
->fc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
412 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
413 complete(&ses
->fc_slot_table
.complete
);
417 * Signal state manager thread if session back channel is drained
419 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
421 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
422 ses
->bc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
424 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
425 complete(&ses
->bc_slot_table
.complete
);
428 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
430 struct nfs4_slot_table
*tbl
;
432 tbl
= &res
->sr_session
->fc_slot_table
;
434 /* just wake up the next guy waiting since
435 * we may have not consumed a slot after all */
436 dprintk("%s: No slot\n", __func__
);
440 spin_lock(&tbl
->slot_tbl_lock
);
441 nfs4_free_slot(tbl
, res
->sr_slot
- tbl
->slots
);
442 nfs4_check_drain_fc_complete(res
->sr_session
);
443 spin_unlock(&tbl
->slot_tbl_lock
);
447 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
449 unsigned long timestamp
;
450 struct nfs_client
*clp
;
453 * sr_status remains 1 if an RPC level error occurred. The server
454 * may or may not have processed the sequence operation..
455 * Proceed as if the server received and processed the sequence
458 if (res
->sr_status
== 1)
459 res
->sr_status
= NFS_OK
;
461 /* don't increment the sequence number if the task wasn't sent */
462 if (!RPC_WAS_SENT(task
))
465 /* Check the SEQUENCE operation status */
466 switch (res
->sr_status
) {
468 /* Update the slot's sequence and clientid lease timer */
469 ++res
->sr_slot
->seq_nr
;
470 timestamp
= res
->sr_renewal_time
;
471 clp
= res
->sr_session
->clp
;
472 do_renew_lease(clp
, timestamp
);
473 /* Check sequence flags */
474 if (res
->sr_status_flags
!= 0)
475 nfs4_schedule_lease_recovery(clp
);
478 /* The server detected a resend of the RPC call and
479 * returned NFS4ERR_DELAY as per Section 2.10.6.2
482 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
484 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
485 res
->sr_slot
->seq_nr
);
488 /* Just update the slot sequence no. */
489 ++res
->sr_slot
->seq_nr
;
492 /* The session may be reset by one of the error handlers. */
493 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
494 nfs41_sequence_free_slot(res
);
497 if (!rpc_restart_call(task
))
499 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
503 static int nfs4_sequence_done(struct rpc_task
*task
,
504 struct nfs4_sequence_res
*res
)
506 if (res
->sr_session
== NULL
)
508 return nfs41_sequence_done(task
, res
);
512 * nfs4_find_slot - efficiently look for a free slot
514 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
515 * If found, we mark the slot as used, update the highest_used_slotid,
516 * and respectively set up the sequence operation args.
517 * The slot number is returned if found, or NFS4_NO_SLOT otherwise.
519 * Note: must be called with under the slot_tbl_lock.
522 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
525 u32 ret_id
= NFS4_NO_SLOT
;
527 dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n",
528 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
530 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
531 if (slotid
>= tbl
->max_slots
)
533 __set_bit(slotid
, tbl
->used_slots
);
534 if (slotid
> tbl
->highest_used_slotid
||
535 tbl
->highest_used_slotid
== NFS4_NO_SLOT
)
536 tbl
->highest_used_slotid
= slotid
;
539 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
540 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
544 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
545 struct nfs4_sequence_res
*res
, int cache_reply
)
547 args
->sa_session
= NULL
;
548 args
->sa_cache_this
= 0;
550 args
->sa_cache_this
= 1;
551 res
->sr_session
= NULL
;
555 int nfs41_setup_sequence(struct nfs4_session
*session
,
556 struct nfs4_sequence_args
*args
,
557 struct nfs4_sequence_res
*res
,
558 struct rpc_task
*task
)
560 struct nfs4_slot
*slot
;
561 struct nfs4_slot_table
*tbl
;
564 dprintk("--> %s\n", __func__
);
565 /* slot already allocated? */
566 if (res
->sr_slot
!= NULL
)
569 tbl
= &session
->fc_slot_table
;
571 spin_lock(&tbl
->slot_tbl_lock
);
572 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
573 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
574 /* The state manager will wait until the slot table is empty */
575 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
576 spin_unlock(&tbl
->slot_tbl_lock
);
577 dprintk("%s session is draining\n", __func__
);
581 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
582 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
583 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
584 spin_unlock(&tbl
->slot_tbl_lock
);
585 dprintk("%s enforce FIFO order\n", __func__
);
589 slotid
= nfs4_find_slot(tbl
);
590 if (slotid
== NFS4_NO_SLOT
) {
591 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
592 spin_unlock(&tbl
->slot_tbl_lock
);
593 dprintk("<-- %s: no free slots\n", __func__
);
596 spin_unlock(&tbl
->slot_tbl_lock
);
598 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
599 slot
= tbl
->slots
+ slotid
;
600 args
->sa_session
= session
;
601 args
->sa_slotid
= slotid
;
603 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
605 res
->sr_session
= session
;
607 res
->sr_renewal_time
= jiffies
;
608 res
->sr_status_flags
= 0;
610 * sr_status is only set in decode_sequence, and so will remain
611 * set to 1 if an rpc level failure occurs.
616 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
618 int nfs4_setup_sequence(const struct nfs_server
*server
,
619 struct nfs4_sequence_args
*args
,
620 struct nfs4_sequence_res
*res
,
621 struct rpc_task
*task
)
623 struct nfs4_session
*session
= nfs4_get_session(server
);
629 dprintk("--> %s clp %p session %p sr_slot %td\n",
630 __func__
, session
->clp
, session
, res
->sr_slot
?
631 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
633 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
635 dprintk("<-- %s status=%d\n", __func__
, ret
);
639 struct nfs41_call_sync_data
{
640 const struct nfs_server
*seq_server
;
641 struct nfs4_sequence_args
*seq_args
;
642 struct nfs4_sequence_res
*seq_res
;
645 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
647 struct nfs41_call_sync_data
*data
= calldata
;
649 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
651 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
652 data
->seq_res
, task
))
654 rpc_call_start(task
);
657 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
659 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
660 nfs41_call_sync_prepare(task
, calldata
);
663 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
665 struct nfs41_call_sync_data
*data
= calldata
;
667 nfs41_sequence_done(task
, data
->seq_res
);
670 struct rpc_call_ops nfs41_call_sync_ops
= {
671 .rpc_call_prepare
= nfs41_call_sync_prepare
,
672 .rpc_call_done
= nfs41_call_sync_done
,
675 struct rpc_call_ops nfs41_call_priv_sync_ops
= {
676 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
677 .rpc_call_done
= nfs41_call_sync_done
,
680 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
681 struct nfs_server
*server
,
682 struct rpc_message
*msg
,
683 struct nfs4_sequence_args
*args
,
684 struct nfs4_sequence_res
*res
,
688 struct rpc_task
*task
;
689 struct nfs41_call_sync_data data
= {
690 .seq_server
= server
,
694 struct rpc_task_setup task_setup
= {
697 .callback_ops
= &nfs41_call_sync_ops
,
698 .callback_data
= &data
702 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
703 task
= rpc_run_task(&task_setup
);
707 ret
= task
->tk_status
;
713 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
714 struct nfs_server
*server
,
715 struct rpc_message
*msg
,
716 struct nfs4_sequence_args
*args
,
717 struct nfs4_sequence_res
*res
,
720 nfs41_init_sequence(args
, res
, cache_reply
);
721 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, 0);
726 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
727 struct nfs4_sequence_res
*res
, int cache_reply
)
731 static int nfs4_sequence_done(struct rpc_task
*task
,
732 struct nfs4_sequence_res
*res
)
736 #endif /* CONFIG_NFS_V4_1 */
738 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
739 struct nfs_server
*server
,
740 struct rpc_message
*msg
,
741 struct nfs4_sequence_args
*args
,
742 struct nfs4_sequence_res
*res
,
745 nfs41_init_sequence(args
, res
, cache_reply
);
746 return rpc_call_sync(clnt
, msg
, 0);
750 int nfs4_call_sync(struct rpc_clnt
*clnt
,
751 struct nfs_server
*server
,
752 struct rpc_message
*msg
,
753 struct nfs4_sequence_args
*args
,
754 struct nfs4_sequence_res
*res
,
757 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
758 args
, res
, cache_reply
);
761 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
763 struct nfs_inode
*nfsi
= NFS_I(dir
);
765 spin_lock(&dir
->i_lock
);
766 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
767 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
768 nfs_force_lookup_revalidate(dir
);
769 dir
->i_version
= cinfo
->after
;
770 spin_unlock(&dir
->i_lock
);
773 struct nfs4_opendata
{
775 struct nfs_openargs o_arg
;
776 struct nfs_openres o_res
;
777 struct nfs_open_confirmargs c_arg
;
778 struct nfs_open_confirmres c_res
;
779 struct nfs4_string owner_name
;
780 struct nfs4_string group_name
;
781 struct nfs_fattr f_attr
;
782 struct nfs_fattr dir_attr
;
784 struct dentry
*dentry
;
785 struct nfs4_state_owner
*owner
;
786 struct nfs4_state
*state
;
788 unsigned long timestamp
;
789 unsigned int rpc_done
: 1;
795 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
797 p
->o_res
.f_attr
= &p
->f_attr
;
798 p
->o_res
.dir_attr
= &p
->dir_attr
;
799 p
->o_res
.seqid
= p
->o_arg
.seqid
;
800 p
->c_res
.seqid
= p
->c_arg
.seqid
;
801 p
->o_res
.server
= p
->o_arg
.server
;
802 nfs_fattr_init(&p
->f_attr
);
803 nfs_fattr_init(&p
->dir_attr
);
804 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
807 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
808 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
809 const struct iattr
*attrs
,
812 struct dentry
*parent
= dget_parent(dentry
);
813 struct inode
*dir
= parent
->d_inode
;
814 struct nfs_server
*server
= NFS_SERVER(dir
);
815 struct nfs4_opendata
*p
;
817 p
= kzalloc(sizeof(*p
), gfp_mask
);
820 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
821 if (p
->o_arg
.seqid
== NULL
)
823 nfs_sb_active(dentry
->d_sb
);
824 p
->dentry
= dget(dentry
);
827 atomic_inc(&sp
->so_count
);
828 p
->o_arg
.fh
= NFS_FH(dir
);
829 p
->o_arg
.open_flags
= flags
;
830 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
831 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
832 p
->o_arg
.id
= sp
->so_seqid
.owner_id
;
833 p
->o_arg
.name
= &dentry
->d_name
;
834 p
->o_arg
.server
= server
;
835 p
->o_arg
.bitmask
= server
->attr_bitmask
;
836 p
->o_arg
.dir_bitmask
= server
->cache_consistency_bitmask
;
837 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
838 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
841 p
->o_arg
.u
.attrs
= &p
->attrs
;
842 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
843 s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
847 p
->c_arg
.fh
= &p
->o_res
.fh
;
848 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
849 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
850 nfs4_init_opendata_res(p
);
860 static void nfs4_opendata_free(struct kref
*kref
)
862 struct nfs4_opendata
*p
= container_of(kref
,
863 struct nfs4_opendata
, kref
);
864 struct super_block
*sb
= p
->dentry
->d_sb
;
866 nfs_free_seqid(p
->o_arg
.seqid
);
867 if (p
->state
!= NULL
)
868 nfs4_put_open_state(p
->state
);
869 nfs4_put_state_owner(p
->owner
);
873 nfs_fattr_free_names(&p
->f_attr
);
877 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
880 kref_put(&p
->kref
, nfs4_opendata_free
);
883 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
887 ret
= rpc_wait_for_completion_task(task
);
891 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
895 if (open_mode
& (O_EXCL
|O_TRUNC
))
897 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
899 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
900 && state
->n_rdonly
!= 0;
903 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
904 && state
->n_wronly
!= 0;
906 case FMODE_READ
|FMODE_WRITE
:
907 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
908 && state
->n_rdwr
!= 0;
914 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
916 if (delegation
== NULL
)
918 if ((delegation
->type
& fmode
) != fmode
)
920 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
922 nfs_mark_delegation_referenced(delegation
);
926 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
935 case FMODE_READ
|FMODE_WRITE
:
938 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
941 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
943 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
944 nfs4_stateid_copy(&state
->stateid
, stateid
);
945 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
948 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
951 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
953 case FMODE_READ
|FMODE_WRITE
:
954 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
958 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
960 write_seqlock(&state
->seqlock
);
961 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
962 write_sequnlock(&state
->seqlock
);
965 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
968 * Protect the call to nfs4_state_set_mode_locked and
969 * serialise the stateid update
971 write_seqlock(&state
->seqlock
);
972 if (deleg_stateid
!= NULL
) {
973 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
974 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
976 if (open_stateid
!= NULL
)
977 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
978 write_sequnlock(&state
->seqlock
);
979 spin_lock(&state
->owner
->so_lock
);
980 update_open_stateflags(state
, fmode
);
981 spin_unlock(&state
->owner
->so_lock
);
984 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
986 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
987 struct nfs_delegation
*deleg_cur
;
990 fmode
&= (FMODE_READ
|FMODE_WRITE
);
993 deleg_cur
= rcu_dereference(nfsi
->delegation
);
994 if (deleg_cur
== NULL
)
997 spin_lock(&deleg_cur
->lock
);
998 if (nfsi
->delegation
!= deleg_cur
||
999 (deleg_cur
->type
& fmode
) != fmode
)
1000 goto no_delegation_unlock
;
1002 if (delegation
== NULL
)
1003 delegation
= &deleg_cur
->stateid
;
1004 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1005 goto no_delegation_unlock
;
1007 nfs_mark_delegation_referenced(deleg_cur
);
1008 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1010 no_delegation_unlock
:
1011 spin_unlock(&deleg_cur
->lock
);
1015 if (!ret
&& open_stateid
!= NULL
) {
1016 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1024 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1026 struct nfs_delegation
*delegation
;
1029 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1030 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1035 nfs_inode_return_delegation(inode
);
1038 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1040 struct nfs4_state
*state
= opendata
->state
;
1041 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1042 struct nfs_delegation
*delegation
;
1043 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1044 fmode_t fmode
= opendata
->o_arg
.fmode
;
1045 nfs4_stateid stateid
;
1049 if (can_open_cached(state
, fmode
, open_mode
)) {
1050 spin_lock(&state
->owner
->so_lock
);
1051 if (can_open_cached(state
, fmode
, open_mode
)) {
1052 update_open_stateflags(state
, fmode
);
1053 spin_unlock(&state
->owner
->so_lock
);
1054 goto out_return_state
;
1056 spin_unlock(&state
->owner
->so_lock
);
1059 delegation
= rcu_dereference(nfsi
->delegation
);
1060 if (!can_open_delegated(delegation
, fmode
)) {
1064 /* Save the delegation */
1065 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1067 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1072 /* Try to update the stateid using the delegation */
1073 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1074 goto out_return_state
;
1077 return ERR_PTR(ret
);
1079 atomic_inc(&state
->count
);
1083 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1085 struct inode
*inode
;
1086 struct nfs4_state
*state
= NULL
;
1087 struct nfs_delegation
*delegation
;
1090 if (!data
->rpc_done
) {
1091 state
= nfs4_try_open_cached(data
);
1096 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1098 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1099 ret
= PTR_ERR(inode
);
1103 state
= nfs4_get_open_state(inode
, data
->owner
);
1106 if (data
->o_res
.delegation_type
!= 0) {
1107 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
1108 int delegation_flags
= 0;
1111 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1113 delegation_flags
= delegation
->flags
;
1115 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1116 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1117 "returning a delegation for "
1118 "OPEN(CLAIM_DELEGATE_CUR)\n",
1120 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1121 nfs_inode_set_delegation(state
->inode
,
1122 data
->owner
->so_cred
,
1125 nfs_inode_reclaim_delegation(state
->inode
,
1126 data
->owner
->so_cred
,
1130 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1138 return ERR_PTR(ret
);
1141 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1143 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1144 struct nfs_open_context
*ctx
;
1146 spin_lock(&state
->inode
->i_lock
);
1147 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1148 if (ctx
->state
!= state
)
1150 get_nfs_open_context(ctx
);
1151 spin_unlock(&state
->inode
->i_lock
);
1154 spin_unlock(&state
->inode
->i_lock
);
1155 return ERR_PTR(-ENOENT
);
1158 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1160 struct nfs4_opendata
*opendata
;
1162 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1163 if (opendata
== NULL
)
1164 return ERR_PTR(-ENOMEM
);
1165 opendata
->state
= state
;
1166 atomic_inc(&state
->count
);
1170 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1172 struct nfs4_state
*newstate
;
1175 opendata
->o_arg
.open_flags
= 0;
1176 opendata
->o_arg
.fmode
= fmode
;
1177 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1178 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1179 nfs4_init_opendata_res(opendata
);
1180 ret
= _nfs4_recover_proc_open(opendata
);
1183 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1184 if (IS_ERR(newstate
))
1185 return PTR_ERR(newstate
);
1186 nfs4_close_state(newstate
, fmode
);
1191 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1193 struct nfs4_state
*newstate
;
1196 /* memory barrier prior to reading state->n_* */
1197 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1199 if (state
->n_rdwr
!= 0) {
1200 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1201 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1204 if (newstate
!= state
)
1207 if (state
->n_wronly
!= 0) {
1208 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1209 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1212 if (newstate
!= state
)
1215 if (state
->n_rdonly
!= 0) {
1216 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1217 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1220 if (newstate
!= state
)
1224 * We may have performed cached opens for all three recoveries.
1225 * Check if we need to update the current stateid.
1227 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1228 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1229 write_seqlock(&state
->seqlock
);
1230 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1231 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1232 write_sequnlock(&state
->seqlock
);
1239 * reclaim state on the server after a reboot.
1241 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1243 struct nfs_delegation
*delegation
;
1244 struct nfs4_opendata
*opendata
;
1245 fmode_t delegation_type
= 0;
1248 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1249 if (IS_ERR(opendata
))
1250 return PTR_ERR(opendata
);
1251 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1252 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1254 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1255 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1256 delegation_type
= delegation
->type
;
1258 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1259 status
= nfs4_open_recover(opendata
, state
);
1260 nfs4_opendata_put(opendata
);
1264 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1266 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1267 struct nfs4_exception exception
= { };
1270 err
= _nfs4_do_open_reclaim(ctx
, state
);
1271 if (err
!= -NFS4ERR_DELAY
)
1273 nfs4_handle_exception(server
, err
, &exception
);
1274 } while (exception
.retry
);
1278 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1280 struct nfs_open_context
*ctx
;
1283 ctx
= nfs4_state_find_open_context(state
);
1285 return PTR_ERR(ctx
);
1286 ret
= nfs4_do_open_reclaim(ctx
, state
);
1287 put_nfs_open_context(ctx
);
1291 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1293 struct nfs4_opendata
*opendata
;
1296 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1297 if (IS_ERR(opendata
))
1298 return PTR_ERR(opendata
);
1299 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1300 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1301 ret
= nfs4_open_recover(opendata
, state
);
1302 nfs4_opendata_put(opendata
);
1306 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1308 struct nfs4_exception exception
= { };
1309 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1312 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1318 case -NFS4ERR_BADSESSION
:
1319 case -NFS4ERR_BADSLOT
:
1320 case -NFS4ERR_BAD_HIGH_SLOT
:
1321 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1322 case -NFS4ERR_DEADSESSION
:
1323 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
1325 case -NFS4ERR_STALE_CLIENTID
:
1326 case -NFS4ERR_STALE_STATEID
:
1327 case -NFS4ERR_EXPIRED
:
1328 /* Don't recall a delegation if it was lost */
1329 nfs4_schedule_lease_recovery(server
->nfs_client
);
1333 * The show must go on: exit, but mark the
1334 * stateid as needing recovery.
1336 case -NFS4ERR_DELEG_REVOKED
:
1337 case -NFS4ERR_ADMIN_REVOKED
:
1338 case -NFS4ERR_BAD_STATEID
:
1339 nfs_inode_find_state_and_recover(state
->inode
,
1341 nfs4_schedule_stateid_recovery(server
, state
);
1344 * User RPCSEC_GSS context has expired.
1345 * We cannot recover this stateid now, so
1346 * skip it and allow recovery thread to
1353 err
= nfs4_handle_exception(server
, err
, &exception
);
1354 } while (exception
.retry
);
1359 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1361 struct nfs4_opendata
*data
= calldata
;
1363 data
->rpc_status
= task
->tk_status
;
1364 if (data
->rpc_status
== 0) {
1365 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1366 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1367 renew_lease(data
->o_res
.server
, data
->timestamp
);
1372 static void nfs4_open_confirm_release(void *calldata
)
1374 struct nfs4_opendata
*data
= calldata
;
1375 struct nfs4_state
*state
= NULL
;
1377 /* If this request hasn't been cancelled, do nothing */
1378 if (data
->cancelled
== 0)
1380 /* In case of error, no cleanup! */
1381 if (!data
->rpc_done
)
1383 state
= nfs4_opendata_to_nfs4_state(data
);
1385 nfs4_close_state(state
, data
->o_arg
.fmode
);
1387 nfs4_opendata_put(data
);
1390 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1391 .rpc_call_done
= nfs4_open_confirm_done
,
1392 .rpc_release
= nfs4_open_confirm_release
,
1396 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1398 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1400 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1401 struct rpc_task
*task
;
1402 struct rpc_message msg
= {
1403 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1404 .rpc_argp
= &data
->c_arg
,
1405 .rpc_resp
= &data
->c_res
,
1406 .rpc_cred
= data
->owner
->so_cred
,
1408 struct rpc_task_setup task_setup_data
= {
1409 .rpc_client
= server
->client
,
1410 .rpc_message
= &msg
,
1411 .callback_ops
= &nfs4_open_confirm_ops
,
1412 .callback_data
= data
,
1413 .workqueue
= nfsiod_workqueue
,
1414 .flags
= RPC_TASK_ASYNC
,
1418 kref_get(&data
->kref
);
1420 data
->rpc_status
= 0;
1421 data
->timestamp
= jiffies
;
1422 task
= rpc_run_task(&task_setup_data
);
1424 return PTR_ERR(task
);
1425 status
= nfs4_wait_for_completion_rpc_task(task
);
1427 data
->cancelled
= 1;
1430 status
= data
->rpc_status
;
1435 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1437 struct nfs4_opendata
*data
= calldata
;
1438 struct nfs4_state_owner
*sp
= data
->owner
;
1440 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1443 * Check if we still need to send an OPEN call, or if we can use
1444 * a delegation instead.
1446 if (data
->state
!= NULL
) {
1447 struct nfs_delegation
*delegation
;
1449 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1452 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1453 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1454 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1455 goto unlock_no_action
;
1458 /* Update sequence id. */
1459 data
->o_arg
.id
= sp
->so_seqid
.owner_id
;
1460 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1461 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1462 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1463 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1465 data
->timestamp
= jiffies
;
1466 if (nfs4_setup_sequence(data
->o_arg
.server
,
1467 &data
->o_arg
.seq_args
,
1468 &data
->o_res
.seq_res
, task
))
1470 rpc_call_start(task
);
1475 task
->tk_action
= NULL
;
1479 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1481 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1482 nfs4_open_prepare(task
, calldata
);
1485 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1487 struct nfs4_opendata
*data
= calldata
;
1489 data
->rpc_status
= task
->tk_status
;
1491 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1494 if (task
->tk_status
== 0) {
1495 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1499 data
->rpc_status
= -ELOOP
;
1502 data
->rpc_status
= -EISDIR
;
1505 data
->rpc_status
= -ENOTDIR
;
1507 renew_lease(data
->o_res
.server
, data
->timestamp
);
1508 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1509 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1514 static void nfs4_open_release(void *calldata
)
1516 struct nfs4_opendata
*data
= calldata
;
1517 struct nfs4_state
*state
= NULL
;
1519 /* If this request hasn't been cancelled, do nothing */
1520 if (data
->cancelled
== 0)
1522 /* In case of error, no cleanup! */
1523 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1525 /* In case we need an open_confirm, no cleanup! */
1526 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1528 state
= nfs4_opendata_to_nfs4_state(data
);
1530 nfs4_close_state(state
, data
->o_arg
.fmode
);
1532 nfs4_opendata_put(data
);
1535 static const struct rpc_call_ops nfs4_open_ops
= {
1536 .rpc_call_prepare
= nfs4_open_prepare
,
1537 .rpc_call_done
= nfs4_open_done
,
1538 .rpc_release
= nfs4_open_release
,
1541 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1542 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1543 .rpc_call_done
= nfs4_open_done
,
1544 .rpc_release
= nfs4_open_release
,
1547 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1549 struct inode
*dir
= data
->dir
->d_inode
;
1550 struct nfs_server
*server
= NFS_SERVER(dir
);
1551 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1552 struct nfs_openres
*o_res
= &data
->o_res
;
1553 struct rpc_task
*task
;
1554 struct rpc_message msg
= {
1555 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1558 .rpc_cred
= data
->owner
->so_cred
,
1560 struct rpc_task_setup task_setup_data
= {
1561 .rpc_client
= server
->client
,
1562 .rpc_message
= &msg
,
1563 .callback_ops
= &nfs4_open_ops
,
1564 .callback_data
= data
,
1565 .workqueue
= nfsiod_workqueue
,
1566 .flags
= RPC_TASK_ASYNC
,
1570 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1571 kref_get(&data
->kref
);
1573 data
->rpc_status
= 0;
1574 data
->cancelled
= 0;
1576 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1577 task
= rpc_run_task(&task_setup_data
);
1579 return PTR_ERR(task
);
1580 status
= nfs4_wait_for_completion_rpc_task(task
);
1582 data
->cancelled
= 1;
1585 status
= data
->rpc_status
;
1591 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1593 struct inode
*dir
= data
->dir
->d_inode
;
1594 struct nfs_openres
*o_res
= &data
->o_res
;
1597 status
= nfs4_run_open_task(data
, 1);
1598 if (status
!= 0 || !data
->rpc_done
)
1601 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1603 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1605 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1606 status
= _nfs4_proc_open_confirm(data
);
1615 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1617 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1619 struct inode
*dir
= data
->dir
->d_inode
;
1620 struct nfs_server
*server
= NFS_SERVER(dir
);
1621 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1622 struct nfs_openres
*o_res
= &data
->o_res
;
1625 status
= nfs4_run_open_task(data
, 0);
1626 if (!data
->rpc_done
)
1629 if (status
== -NFS4ERR_BADNAME
&&
1630 !(o_arg
->open_flags
& O_CREAT
))
1635 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1637 if (o_arg
->open_flags
& O_CREAT
) {
1638 update_changeattr(dir
, &o_res
->cinfo
);
1639 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1641 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1642 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1643 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1644 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1645 status
= _nfs4_proc_open_confirm(data
);
1649 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1650 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1654 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1659 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1660 ret
= nfs4_wait_clnt_recover(clp
);
1663 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1664 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1666 nfs4_schedule_state_manager(clp
);
1672 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1674 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1679 * reclaim state on the server after a network partition.
1680 * Assumes caller holds the appropriate lock
1682 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1684 struct nfs4_opendata
*opendata
;
1687 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1688 if (IS_ERR(opendata
))
1689 return PTR_ERR(opendata
);
1690 ret
= nfs4_open_recover(opendata
, state
);
1692 d_drop(ctx
->dentry
);
1693 nfs4_opendata_put(opendata
);
1697 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1699 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1700 struct nfs4_exception exception
= { };
1704 err
= _nfs4_open_expired(ctx
, state
);
1708 case -NFS4ERR_GRACE
:
1709 case -NFS4ERR_DELAY
:
1710 nfs4_handle_exception(server
, err
, &exception
);
1713 } while (exception
.retry
);
1718 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1720 struct nfs_open_context
*ctx
;
1723 ctx
= nfs4_state_find_open_context(state
);
1725 return PTR_ERR(ctx
);
1726 ret
= nfs4_do_open_expired(ctx
, state
);
1727 put_nfs_open_context(ctx
);
1731 #if defined(CONFIG_NFS_V4_1)
1732 static int nfs41_check_expired_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, unsigned int flags
)
1734 int status
= NFS_OK
;
1735 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1737 if (state
->flags
& flags
) {
1738 status
= nfs41_test_stateid(server
, stateid
);
1739 if (status
!= NFS_OK
) {
1740 nfs41_free_stateid(server
, stateid
);
1741 state
->flags
&= ~flags
;
1747 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1749 int deleg_status
, open_status
;
1750 int deleg_flags
= 1 << NFS_DELEGATED_STATE
;
1751 int open_flags
= (1 << NFS_O_RDONLY_STATE
) | (1 << NFS_O_WRONLY_STATE
) | (1 << NFS_O_RDWR_STATE
);
1753 deleg_status
= nfs41_check_expired_stateid(state
, &state
->stateid
, deleg_flags
);
1754 open_status
= nfs41_check_expired_stateid(state
, &state
->open_stateid
, open_flags
);
1756 if ((deleg_status
== NFS_OK
) && (open_status
== NFS_OK
))
1758 return nfs4_open_expired(sp
, state
);
1763 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1764 * fields corresponding to attributes that were used to store the verifier.
1765 * Make sure we clobber those fields in the later setattr call
1767 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1769 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1770 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1771 sattr
->ia_valid
|= ATTR_ATIME
;
1773 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1774 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1775 sattr
->ia_valid
|= ATTR_MTIME
;
1779 * Returns a referenced nfs4_state
1781 static int _nfs4_do_open(struct inode
*dir
, struct dentry
*dentry
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
1783 struct nfs4_state_owner
*sp
;
1784 struct nfs4_state
*state
= NULL
;
1785 struct nfs_server
*server
= NFS_SERVER(dir
);
1786 struct nfs4_opendata
*opendata
;
1789 /* Protect against reboot recovery conflicts */
1791 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1793 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1796 status
= nfs4_recover_expired_lease(server
);
1798 goto err_put_state_owner
;
1799 if (dentry
->d_inode
!= NULL
)
1800 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1802 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1803 if (opendata
== NULL
)
1804 goto err_put_state_owner
;
1806 if (dentry
->d_inode
!= NULL
)
1807 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1809 status
= _nfs4_proc_open(opendata
);
1811 goto err_opendata_put
;
1813 state
= nfs4_opendata_to_nfs4_state(opendata
);
1814 status
= PTR_ERR(state
);
1816 goto err_opendata_put
;
1817 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1818 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1820 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1821 nfs4_exclusive_attrset(opendata
, sattr
);
1823 nfs_fattr_init(opendata
->o_res
.f_attr
);
1824 status
= nfs4_do_setattr(state
->inode
, cred
,
1825 opendata
->o_res
.f_attr
, sattr
,
1828 nfs_setattr_update_inode(state
->inode
, sattr
);
1829 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1831 nfs4_opendata_put(opendata
);
1832 nfs4_put_state_owner(sp
);
1836 nfs4_opendata_put(opendata
);
1837 err_put_state_owner
:
1838 nfs4_put_state_owner(sp
);
1845 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct dentry
*dentry
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1847 struct nfs4_exception exception
= { };
1848 struct nfs4_state
*res
;
1852 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
, &res
);
1855 /* NOTE: BAD_SEQID means the server and client disagree about the
1856 * book-keeping w.r.t. state-changing operations
1857 * (OPEN/CLOSE/LOCK/LOCKU...)
1858 * It is actually a sign of a bug on the client or on the server.
1860 * If we receive a BAD_SEQID error in the particular case of
1861 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1862 * have unhashed the old state_owner for us, and that we can
1863 * therefore safely retry using a new one. We should still warn
1864 * the user though...
1866 if (status
== -NFS4ERR_BAD_SEQID
) {
1867 printk(KERN_WARNING
"NFS: v4 server %s "
1868 " returned a bad sequence-id error!\n",
1869 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1870 exception
.retry
= 1;
1874 * BAD_STATEID on OPEN means that the server cancelled our
1875 * state before it received the OPEN_CONFIRM.
1876 * Recover by retrying the request as per the discussion
1877 * on Page 181 of RFC3530.
1879 if (status
== -NFS4ERR_BAD_STATEID
) {
1880 exception
.retry
= 1;
1883 if (status
== -EAGAIN
) {
1884 /* We must have found a delegation */
1885 exception
.retry
= 1;
1888 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1889 status
, &exception
));
1890 } while (exception
.retry
);
1894 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1895 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1896 struct nfs4_state
*state
)
1898 struct nfs_server
*server
= NFS_SERVER(inode
);
1899 struct nfs_setattrargs arg
= {
1900 .fh
= NFS_FH(inode
),
1903 .bitmask
= server
->attr_bitmask
,
1905 struct nfs_setattrres res
= {
1909 struct rpc_message msg
= {
1910 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1915 unsigned long timestamp
= jiffies
;
1918 nfs_fattr_init(fattr
);
1920 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1921 /* Use that stateid */
1922 } else if (state
!= NULL
) {
1923 nfs4_select_rw_stateid(&arg
.stateid
, state
, current
->files
, current
->tgid
);
1925 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
1927 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
1928 if (status
== 0 && state
!= NULL
)
1929 renew_lease(server
, timestamp
);
1933 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1934 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1935 struct nfs4_state
*state
)
1937 struct nfs_server
*server
= NFS_SERVER(inode
);
1938 struct nfs4_exception exception
= {
1943 err
= nfs4_handle_exception(server
,
1944 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1946 } while (exception
.retry
);
1950 struct nfs4_closedata
{
1951 struct inode
*inode
;
1952 struct nfs4_state
*state
;
1953 struct nfs_closeargs arg
;
1954 struct nfs_closeres res
;
1955 struct nfs_fattr fattr
;
1956 unsigned long timestamp
;
1961 static void nfs4_free_closedata(void *data
)
1963 struct nfs4_closedata
*calldata
= data
;
1964 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1965 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
1968 pnfs_roc_release(calldata
->state
->inode
);
1969 nfs4_put_open_state(calldata
->state
);
1970 nfs_free_seqid(calldata
->arg
.seqid
);
1971 nfs4_put_state_owner(sp
);
1972 nfs_sb_deactive(sb
);
1976 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
1979 spin_lock(&state
->owner
->so_lock
);
1980 if (!(fmode
& FMODE_READ
))
1981 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1982 if (!(fmode
& FMODE_WRITE
))
1983 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1984 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1985 spin_unlock(&state
->owner
->so_lock
);
1988 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1990 struct nfs4_closedata
*calldata
= data
;
1991 struct nfs4_state
*state
= calldata
->state
;
1992 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1994 dprintk("%s: begin!\n", __func__
);
1995 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
1997 /* hmm. we are done with the inode, and in the process of freeing
1998 * the state_owner. we keep this around to process errors
2000 switch (task
->tk_status
) {
2003 pnfs_roc_set_barrier(state
->inode
,
2004 calldata
->roc_barrier
);
2005 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2006 renew_lease(server
, calldata
->timestamp
);
2007 nfs4_close_clear_stateid_flags(state
,
2008 calldata
->arg
.fmode
);
2010 case -NFS4ERR_STALE_STATEID
:
2011 case -NFS4ERR_OLD_STATEID
:
2012 case -NFS4ERR_BAD_STATEID
:
2013 case -NFS4ERR_EXPIRED
:
2014 if (calldata
->arg
.fmode
== 0)
2017 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2018 rpc_restart_call_prepare(task
);
2020 nfs_release_seqid(calldata
->arg
.seqid
);
2021 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2022 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2025 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2027 struct nfs4_closedata
*calldata
= data
;
2028 struct nfs4_state
*state
= calldata
->state
;
2031 dprintk("%s: begin!\n", __func__
);
2032 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2035 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2036 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2037 spin_lock(&state
->owner
->so_lock
);
2038 /* Calculate the change in open mode */
2039 if (state
->n_rdwr
== 0) {
2040 if (state
->n_rdonly
== 0) {
2041 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2042 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2043 calldata
->arg
.fmode
&= ~FMODE_READ
;
2045 if (state
->n_wronly
== 0) {
2046 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2047 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2048 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2051 spin_unlock(&state
->owner
->so_lock
);
2054 /* Note: exit _without_ calling nfs4_close_done */
2055 task
->tk_action
= NULL
;
2059 if (calldata
->arg
.fmode
== 0) {
2060 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2061 if (calldata
->roc
&&
2062 pnfs_roc_drain(calldata
->inode
, &calldata
->roc_barrier
)) {
2063 rpc_sleep_on(&NFS_SERVER(calldata
->inode
)->roc_rpcwaitq
,
2069 nfs_fattr_init(calldata
->res
.fattr
);
2070 calldata
->timestamp
= jiffies
;
2071 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
2072 &calldata
->arg
.seq_args
,
2073 &calldata
->res
.seq_res
,
2076 rpc_call_start(task
);
2078 dprintk("%s: done!\n", __func__
);
2081 static const struct rpc_call_ops nfs4_close_ops
= {
2082 .rpc_call_prepare
= nfs4_close_prepare
,
2083 .rpc_call_done
= nfs4_close_done
,
2084 .rpc_release
= nfs4_free_closedata
,
2088 * It is possible for data to be read/written from a mem-mapped file
2089 * after the sys_close call (which hits the vfs layer as a flush).
2090 * This means that we can't safely call nfsv4 close on a file until
2091 * the inode is cleared. This in turn means that we are not good
2092 * NFSv4 citizens - we do not indicate to the server to update the file's
2093 * share state even when we are done with one of the three share
2094 * stateid's in the inode.
2096 * NOTE: Caller must be holding the sp->so_owner semaphore!
2098 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
, bool roc
)
2100 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2101 struct nfs4_closedata
*calldata
;
2102 struct nfs4_state_owner
*sp
= state
->owner
;
2103 struct rpc_task
*task
;
2104 struct rpc_message msg
= {
2105 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2106 .rpc_cred
= state
->owner
->so_cred
,
2108 struct rpc_task_setup task_setup_data
= {
2109 .rpc_client
= server
->client
,
2110 .rpc_message
= &msg
,
2111 .callback_ops
= &nfs4_close_ops
,
2112 .workqueue
= nfsiod_workqueue
,
2113 .flags
= RPC_TASK_ASYNC
,
2115 int status
= -ENOMEM
;
2117 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2118 if (calldata
== NULL
)
2120 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2121 calldata
->inode
= state
->inode
;
2122 calldata
->state
= state
;
2123 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2124 calldata
->arg
.stateid
= &state
->open_stateid
;
2125 /* Serialization for the sequence id */
2126 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2127 if (calldata
->arg
.seqid
== NULL
)
2128 goto out_free_calldata
;
2129 calldata
->arg
.fmode
= 0;
2130 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2131 calldata
->res
.fattr
= &calldata
->fattr
;
2132 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2133 calldata
->res
.server
= server
;
2134 calldata
->roc
= roc
;
2135 nfs_sb_active(calldata
->inode
->i_sb
);
2137 msg
.rpc_argp
= &calldata
->arg
;
2138 msg
.rpc_resp
= &calldata
->res
;
2139 task_setup_data
.callback_data
= calldata
;
2140 task
= rpc_run_task(&task_setup_data
);
2142 return PTR_ERR(task
);
2145 status
= rpc_wait_for_completion_task(task
);
2152 pnfs_roc_release(state
->inode
);
2153 nfs4_put_open_state(state
);
2154 nfs4_put_state_owner(sp
);
2158 static struct inode
*
2159 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2161 struct nfs4_state
*state
;
2163 /* Protect against concurrent sillydeletes */
2164 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
, ctx
->cred
);
2166 return ERR_CAST(state
);
2168 return igrab(state
->inode
);
2171 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2173 if (ctx
->state
== NULL
)
2176 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2178 nfs4_close_state(ctx
->state
, ctx
->mode
);
2181 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2183 struct nfs4_server_caps_arg args
= {
2186 struct nfs4_server_caps_res res
= {};
2187 struct rpc_message msg
= {
2188 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2194 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2196 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2197 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2198 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2199 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2200 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2201 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2202 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2203 server
->caps
|= NFS_CAP_ACLS
;
2204 if (res
.has_links
!= 0)
2205 server
->caps
|= NFS_CAP_HARDLINKS
;
2206 if (res
.has_symlinks
!= 0)
2207 server
->caps
|= NFS_CAP_SYMLINKS
;
2208 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2209 server
->caps
|= NFS_CAP_FILEID
;
2210 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2211 server
->caps
|= NFS_CAP_MODE
;
2212 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2213 server
->caps
|= NFS_CAP_NLINK
;
2214 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2215 server
->caps
|= NFS_CAP_OWNER
;
2216 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2217 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2218 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2219 server
->caps
|= NFS_CAP_ATIME
;
2220 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2221 server
->caps
|= NFS_CAP_CTIME
;
2222 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2223 server
->caps
|= NFS_CAP_MTIME
;
2225 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2226 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2227 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2228 server
->acl_bitmask
= res
.acl_bitmask
;
2229 server
->fh_expire_type
= res
.fh_expire_type
;
2235 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2237 struct nfs4_exception exception
= { };
2240 err
= nfs4_handle_exception(server
,
2241 _nfs4_server_capabilities(server
, fhandle
),
2243 } while (exception
.retry
);
2247 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2248 struct nfs_fsinfo
*info
)
2250 struct nfs4_lookup_root_arg args
= {
2251 .bitmask
= nfs4_fattr_bitmap
,
2253 struct nfs4_lookup_res res
= {
2255 .fattr
= info
->fattr
,
2258 struct rpc_message msg
= {
2259 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2264 nfs_fattr_init(info
->fattr
);
2265 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2268 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2269 struct nfs_fsinfo
*info
)
2271 struct nfs4_exception exception
= { };
2274 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2277 case -NFS4ERR_WRONGSEC
:
2280 err
= nfs4_handle_exception(server
, err
, &exception
);
2282 } while (exception
.retry
);
2286 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2287 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2289 struct rpc_auth
*auth
;
2292 auth
= rpcauth_create(flavor
, server
->client
);
2297 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2302 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2303 struct nfs_fsinfo
*info
)
2305 int i
, len
, status
= 0;
2306 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2308 len
= gss_mech_list_pseudoflavors(&flav_array
[0]);
2309 flav_array
[len
] = RPC_AUTH_NULL
;
2312 for (i
= 0; i
< len
; i
++) {
2313 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2314 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2319 * -EACCESS could mean that the user doesn't have correct permissions
2320 * to access the mount. It could also mean that we tried to mount
2321 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2322 * existing mount programs don't handle -EACCES very well so it should
2323 * be mapped to -EPERM instead.
2325 if (status
== -EACCES
)
2331 * get the file handle for the "/" directory on the server
2333 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2334 struct nfs_fsinfo
*info
)
2336 int minor_version
= server
->nfs_client
->cl_minorversion
;
2337 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2338 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2340 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2341 * by nfs4_map_errors() as this function exits.
2343 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2345 status
= nfs4_server_capabilities(server
, fhandle
);
2347 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2348 return nfs4_map_errors(status
);
2352 * Get locations and (maybe) other attributes of a referral.
2353 * Note that we'll actually follow the referral later when
2354 * we detect fsid mismatch in inode revalidation
2356 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
,
2357 struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2359 int status
= -ENOMEM
;
2360 struct page
*page
= NULL
;
2361 struct nfs4_fs_locations
*locations
= NULL
;
2363 page
= alloc_page(GFP_KERNEL
);
2366 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2367 if (locations
== NULL
)
2370 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2373 /* Make sure server returned a different fsid for the referral */
2374 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2375 dprintk("%s: server did not return a different fsid for"
2376 " a referral at %s\n", __func__
, name
->name
);
2380 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2381 nfs_fixup_referral_attributes(&locations
->fattr
);
2383 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2384 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2385 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2393 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2395 struct nfs4_getattr_arg args
= {
2397 .bitmask
= server
->attr_bitmask
,
2399 struct nfs4_getattr_res res
= {
2403 struct rpc_message msg
= {
2404 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2409 nfs_fattr_init(fattr
);
2410 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2413 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2415 struct nfs4_exception exception
= { };
2418 err
= nfs4_handle_exception(server
,
2419 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2421 } while (exception
.retry
);
2426 * The file is not closed if it is opened due to the a request to change
2427 * the size of the file. The open call will not be needed once the
2428 * VFS layer lookup-intents are implemented.
2430 * Close is called when the inode is destroyed.
2431 * If we haven't opened the file for O_WRONLY, we
2432 * need to in the size_change case to obtain a stateid.
2435 * Because OPEN is always done by name in nfsv4, it is
2436 * possible that we opened a different file by the same
2437 * name. We can recognize this race condition, but we
2438 * can't do anything about it besides returning an error.
2440 * This will be fixed with VFS changes (lookup-intent).
2443 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2444 struct iattr
*sattr
)
2446 struct inode
*inode
= dentry
->d_inode
;
2447 struct rpc_cred
*cred
= NULL
;
2448 struct nfs4_state
*state
= NULL
;
2451 if (pnfs_ld_layoutret_on_setattr(inode
))
2452 pnfs_return_layout(inode
);
2454 nfs_fattr_init(fattr
);
2456 /* Search for an existing open(O_WRITE) file */
2457 if (sattr
->ia_valid
& ATTR_FILE
) {
2458 struct nfs_open_context
*ctx
;
2460 ctx
= nfs_file_open_context(sattr
->ia_file
);
2467 /* Deal with open(O_TRUNC) */
2468 if (sattr
->ia_valid
& ATTR_OPEN
)
2469 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2471 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2473 nfs_setattr_update_inode(inode
, sattr
);
2477 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2478 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2479 struct nfs_fattr
*fattr
)
2481 struct nfs_server
*server
= NFS_SERVER(dir
);
2483 struct nfs4_lookup_arg args
= {
2484 .bitmask
= server
->attr_bitmask
,
2485 .dir_fh
= NFS_FH(dir
),
2488 struct nfs4_lookup_res res
= {
2493 struct rpc_message msg
= {
2494 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2499 nfs_fattr_init(fattr
);
2501 dprintk("NFS call lookup %s\n", name
->name
);
2502 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2503 dprintk("NFS reply lookup: %d\n", status
);
2507 void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
, struct nfs_fh
*fh
)
2509 memset(fh
, 0, sizeof(struct nfs_fh
));
2510 fattr
->fsid
.major
= 1;
2511 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2512 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_FSID
| NFS_ATTR_FATTR_MOUNTPOINT
;
2513 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2517 static int nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
, struct qstr
*name
,
2518 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2520 struct nfs4_exception exception
= { };
2525 status
= _nfs4_proc_lookup(clnt
, dir
, name
, fhandle
, fattr
);
2527 case -NFS4ERR_BADNAME
:
2529 case -NFS4ERR_MOVED
:
2530 return nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2531 case -NFS4ERR_WRONGSEC
:
2532 nfs_fixup_secinfo_attributes(fattr
, fhandle
);
2534 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2535 status
, &exception
);
2536 } while (exception
.retry
);
2540 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2542 struct nfs_server
*server
= NFS_SERVER(inode
);
2543 struct nfs4_accessargs args
= {
2544 .fh
= NFS_FH(inode
),
2545 .bitmask
= server
->cache_consistency_bitmask
,
2547 struct nfs4_accessres res
= {
2550 struct rpc_message msg
= {
2551 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2554 .rpc_cred
= entry
->cred
,
2556 int mode
= entry
->mask
;
2560 * Determine which access bits we want to ask for...
2562 if (mode
& MAY_READ
)
2563 args
.access
|= NFS4_ACCESS_READ
;
2564 if (S_ISDIR(inode
->i_mode
)) {
2565 if (mode
& MAY_WRITE
)
2566 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2567 if (mode
& MAY_EXEC
)
2568 args
.access
|= NFS4_ACCESS_LOOKUP
;
2570 if (mode
& MAY_WRITE
)
2571 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2572 if (mode
& MAY_EXEC
)
2573 args
.access
|= NFS4_ACCESS_EXECUTE
;
2576 res
.fattr
= nfs_alloc_fattr();
2577 if (res
.fattr
== NULL
)
2580 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2583 if (res
.access
& NFS4_ACCESS_READ
)
2584 entry
->mask
|= MAY_READ
;
2585 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2586 entry
->mask
|= MAY_WRITE
;
2587 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2588 entry
->mask
|= MAY_EXEC
;
2589 nfs_refresh_inode(inode
, res
.fattr
);
2591 nfs_free_fattr(res
.fattr
);
2595 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2597 struct nfs4_exception exception
= { };
2600 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2601 _nfs4_proc_access(inode
, entry
),
2603 } while (exception
.retry
);
2608 * TODO: For the time being, we don't try to get any attributes
2609 * along with any of the zero-copy operations READ, READDIR,
2612 * In the case of the first three, we want to put the GETATTR
2613 * after the read-type operation -- this is because it is hard
2614 * to predict the length of a GETATTR response in v4, and thus
2615 * align the READ data correctly. This means that the GETATTR
2616 * may end up partially falling into the page cache, and we should
2617 * shift it into the 'tail' of the xdr_buf before processing.
2618 * To do this efficiently, we need to know the total length
2619 * of data received, which doesn't seem to be available outside
2622 * In the case of WRITE, we also want to put the GETATTR after
2623 * the operation -- in this case because we want to make sure
2624 * we get the post-operation mtime and size. This means that
2625 * we can't use xdr_encode_pages() as written: we need a variant
2626 * of it which would leave room in the 'tail' iovec.
2628 * Both of these changes to the XDR layer would in fact be quite
2629 * minor, but I decided to leave them for a subsequent patch.
2631 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2632 unsigned int pgbase
, unsigned int pglen
)
2634 struct nfs4_readlink args
= {
2635 .fh
= NFS_FH(inode
),
2640 struct nfs4_readlink_res res
;
2641 struct rpc_message msg
= {
2642 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2647 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2650 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2651 unsigned int pgbase
, unsigned int pglen
)
2653 struct nfs4_exception exception
= { };
2656 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2657 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2659 } while (exception
.retry
);
2665 * We will need to arrange for the VFS layer to provide an atomic open.
2666 * Until then, this create/open method is prone to inefficiency and race
2667 * conditions due to the lookup, create, and open VFS calls from sys_open()
2668 * placed on the wire.
2670 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2671 * The file will be opened again in the subsequent VFS open call
2672 * (nfs4_proc_file_open).
2674 * The open for read will just hang around to be used by any process that
2675 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2679 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2680 int flags
, struct nfs_open_context
*ctx
)
2682 struct dentry
*de
= dentry
;
2683 struct nfs4_state
*state
;
2684 struct rpc_cred
*cred
= NULL
;
2693 sattr
->ia_mode
&= ~current_umask();
2694 state
= nfs4_do_open(dir
, de
, fmode
, flags
, sattr
, cred
);
2696 if (IS_ERR(state
)) {
2697 status
= PTR_ERR(state
);
2700 d_add(dentry
, igrab(state
->inode
));
2701 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2705 nfs4_close_sync(state
, fmode
);
2710 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2712 struct nfs_server
*server
= NFS_SERVER(dir
);
2713 struct nfs_removeargs args
= {
2715 .name
.len
= name
->len
,
2716 .name
.name
= name
->name
,
2717 .bitmask
= server
->attr_bitmask
,
2719 struct nfs_removeres res
= {
2722 struct rpc_message msg
= {
2723 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2727 int status
= -ENOMEM
;
2729 res
.dir_attr
= nfs_alloc_fattr();
2730 if (res
.dir_attr
== NULL
)
2733 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2735 update_changeattr(dir
, &res
.cinfo
);
2736 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2738 nfs_free_fattr(res
.dir_attr
);
2743 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2745 struct nfs4_exception exception
= { };
2748 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2749 _nfs4_proc_remove(dir
, name
),
2751 } while (exception
.retry
);
2755 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2757 struct nfs_server
*server
= NFS_SERVER(dir
);
2758 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2759 struct nfs_removeres
*res
= msg
->rpc_resp
;
2761 args
->bitmask
= server
->cache_consistency_bitmask
;
2762 res
->server
= server
;
2763 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2764 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
2767 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2769 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2771 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2773 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2775 update_changeattr(dir
, &res
->cinfo
);
2776 nfs_post_op_update_inode(dir
, res
->dir_attr
);
2780 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2782 struct nfs_server
*server
= NFS_SERVER(dir
);
2783 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2784 struct nfs_renameres
*res
= msg
->rpc_resp
;
2786 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2787 arg
->bitmask
= server
->attr_bitmask
;
2788 res
->server
= server
;
2789 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
2792 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2793 struct inode
*new_dir
)
2795 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2797 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2799 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2802 update_changeattr(old_dir
, &res
->old_cinfo
);
2803 nfs_post_op_update_inode(old_dir
, res
->old_fattr
);
2804 update_changeattr(new_dir
, &res
->new_cinfo
);
2805 nfs_post_op_update_inode(new_dir
, res
->new_fattr
);
2809 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2810 struct inode
*new_dir
, struct qstr
*new_name
)
2812 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2813 struct nfs_renameargs arg
= {
2814 .old_dir
= NFS_FH(old_dir
),
2815 .new_dir
= NFS_FH(new_dir
),
2816 .old_name
= old_name
,
2817 .new_name
= new_name
,
2818 .bitmask
= server
->attr_bitmask
,
2820 struct nfs_renameres res
= {
2823 struct rpc_message msg
= {
2824 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2828 int status
= -ENOMEM
;
2830 res
.old_fattr
= nfs_alloc_fattr();
2831 res
.new_fattr
= nfs_alloc_fattr();
2832 if (res
.old_fattr
== NULL
|| res
.new_fattr
== NULL
)
2835 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2837 update_changeattr(old_dir
, &res
.old_cinfo
);
2838 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2839 update_changeattr(new_dir
, &res
.new_cinfo
);
2840 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2843 nfs_free_fattr(res
.new_fattr
);
2844 nfs_free_fattr(res
.old_fattr
);
2848 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2849 struct inode
*new_dir
, struct qstr
*new_name
)
2851 struct nfs4_exception exception
= { };
2854 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2855 _nfs4_proc_rename(old_dir
, old_name
,
2858 } while (exception
.retry
);
2862 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2864 struct nfs_server
*server
= NFS_SERVER(inode
);
2865 struct nfs4_link_arg arg
= {
2866 .fh
= NFS_FH(inode
),
2867 .dir_fh
= NFS_FH(dir
),
2869 .bitmask
= server
->attr_bitmask
,
2871 struct nfs4_link_res res
= {
2874 struct rpc_message msg
= {
2875 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2879 int status
= -ENOMEM
;
2881 res
.fattr
= nfs_alloc_fattr();
2882 res
.dir_attr
= nfs_alloc_fattr();
2883 if (res
.fattr
== NULL
|| res
.dir_attr
== NULL
)
2886 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2888 update_changeattr(dir
, &res
.cinfo
);
2889 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2890 nfs_post_op_update_inode(inode
, res
.fattr
);
2893 nfs_free_fattr(res
.dir_attr
);
2894 nfs_free_fattr(res
.fattr
);
2898 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2900 struct nfs4_exception exception
= { };
2903 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2904 _nfs4_proc_link(inode
, dir
, name
),
2906 } while (exception
.retry
);
2910 struct nfs4_createdata
{
2911 struct rpc_message msg
;
2912 struct nfs4_create_arg arg
;
2913 struct nfs4_create_res res
;
2915 struct nfs_fattr fattr
;
2916 struct nfs_fattr dir_fattr
;
2919 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2920 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2922 struct nfs4_createdata
*data
;
2924 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2926 struct nfs_server
*server
= NFS_SERVER(dir
);
2928 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2929 data
->msg
.rpc_argp
= &data
->arg
;
2930 data
->msg
.rpc_resp
= &data
->res
;
2931 data
->arg
.dir_fh
= NFS_FH(dir
);
2932 data
->arg
.server
= server
;
2933 data
->arg
.name
= name
;
2934 data
->arg
.attrs
= sattr
;
2935 data
->arg
.ftype
= ftype
;
2936 data
->arg
.bitmask
= server
->attr_bitmask
;
2937 data
->res
.server
= server
;
2938 data
->res
.fh
= &data
->fh
;
2939 data
->res
.fattr
= &data
->fattr
;
2940 data
->res
.dir_fattr
= &data
->dir_fattr
;
2941 nfs_fattr_init(data
->res
.fattr
);
2942 nfs_fattr_init(data
->res
.dir_fattr
);
2947 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2949 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
2950 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
2952 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2953 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2954 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2959 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2964 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2965 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2967 struct nfs4_createdata
*data
;
2968 int status
= -ENAMETOOLONG
;
2970 if (len
> NFS4_MAXPATHLEN
)
2974 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2978 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2979 data
->arg
.u
.symlink
.pages
= &page
;
2980 data
->arg
.u
.symlink
.len
= len
;
2982 status
= nfs4_do_create(dir
, dentry
, data
);
2984 nfs4_free_createdata(data
);
2989 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2990 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2992 struct nfs4_exception exception
= { };
2995 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2996 _nfs4_proc_symlink(dir
, dentry
, page
,
2999 } while (exception
.retry
);
3003 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3004 struct iattr
*sattr
)
3006 struct nfs4_createdata
*data
;
3007 int status
= -ENOMEM
;
3009 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3013 status
= nfs4_do_create(dir
, dentry
, data
);
3015 nfs4_free_createdata(data
);
3020 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3021 struct iattr
*sattr
)
3023 struct nfs4_exception exception
= { };
3026 sattr
->ia_mode
&= ~current_umask();
3028 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3029 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3031 } while (exception
.retry
);
3035 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3036 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3038 struct inode
*dir
= dentry
->d_inode
;
3039 struct nfs4_readdir_arg args
= {
3044 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3047 struct nfs4_readdir_res res
;
3048 struct rpc_message msg
= {
3049 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3056 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3057 dentry
->d_parent
->d_name
.name
,
3058 dentry
->d_name
.name
,
3059 (unsigned long long)cookie
);
3060 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
3061 res
.pgbase
= args
.pgbase
;
3062 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3064 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3065 status
+= args
.pgbase
;
3068 nfs_invalidate_atime(dir
);
3070 dprintk("%s: returns %d\n", __func__
, status
);
3074 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3075 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3077 struct nfs4_exception exception
= { };
3080 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3081 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3082 pages
, count
, plus
),
3084 } while (exception
.retry
);
3088 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3089 struct iattr
*sattr
, dev_t rdev
)
3091 struct nfs4_createdata
*data
;
3092 int mode
= sattr
->ia_mode
;
3093 int status
= -ENOMEM
;
3095 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
3096 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
3098 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3103 data
->arg
.ftype
= NF4FIFO
;
3104 else if (S_ISBLK(mode
)) {
3105 data
->arg
.ftype
= NF4BLK
;
3106 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3107 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3109 else if (S_ISCHR(mode
)) {
3110 data
->arg
.ftype
= NF4CHR
;
3111 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3112 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3115 status
= nfs4_do_create(dir
, dentry
, data
);
3117 nfs4_free_createdata(data
);
3122 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3123 struct iattr
*sattr
, dev_t rdev
)
3125 struct nfs4_exception exception
= { };
3128 sattr
->ia_mode
&= ~current_umask();
3130 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3131 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3133 } while (exception
.retry
);
3137 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3138 struct nfs_fsstat
*fsstat
)
3140 struct nfs4_statfs_arg args
= {
3142 .bitmask
= server
->attr_bitmask
,
3144 struct nfs4_statfs_res res
= {
3147 struct rpc_message msg
= {
3148 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3153 nfs_fattr_init(fsstat
->fattr
);
3154 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3157 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3159 struct nfs4_exception exception
= { };
3162 err
= nfs4_handle_exception(server
,
3163 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3165 } while (exception
.retry
);
3169 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3170 struct nfs_fsinfo
*fsinfo
)
3172 struct nfs4_fsinfo_arg args
= {
3174 .bitmask
= server
->attr_bitmask
,
3176 struct nfs4_fsinfo_res res
= {
3179 struct rpc_message msg
= {
3180 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3185 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3188 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3190 struct nfs4_exception exception
= { };
3194 err
= nfs4_handle_exception(server
,
3195 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3197 } while (exception
.retry
);
3201 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3203 nfs_fattr_init(fsinfo
->fattr
);
3204 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3207 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3208 struct nfs_pathconf
*pathconf
)
3210 struct nfs4_pathconf_arg args
= {
3212 .bitmask
= server
->attr_bitmask
,
3214 struct nfs4_pathconf_res res
= {
3215 .pathconf
= pathconf
,
3217 struct rpc_message msg
= {
3218 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3223 /* None of the pathconf attributes are mandatory to implement */
3224 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3225 memset(pathconf
, 0, sizeof(*pathconf
));
3229 nfs_fattr_init(pathconf
->fattr
);
3230 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3233 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3234 struct nfs_pathconf
*pathconf
)
3236 struct nfs4_exception exception
= { };
3240 err
= nfs4_handle_exception(server
,
3241 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3243 } while (exception
.retry
);
3247 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3249 nfs_invalidate_atime(data
->inode
);
3252 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3254 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3256 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3257 rpc_restart_call_prepare(task
);
3261 __nfs4_read_done_cb(data
);
3262 if (task
->tk_status
> 0)
3263 renew_lease(server
, data
->timestamp
);
3267 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3270 dprintk("--> %s\n", __func__
);
3272 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3275 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3276 nfs4_read_done_cb(task
, data
);
3279 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3281 data
->timestamp
= jiffies
;
3282 data
->read_done_cb
= nfs4_read_done_cb
;
3283 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3284 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3287 /* Reset the the nfs_read_data to send the read to the MDS. */
3288 void nfs4_reset_read(struct rpc_task
*task
, struct nfs_read_data
*data
)
3290 dprintk("%s Reset task for i/o through\n", __func__
);
3291 put_lseg(data
->lseg
);
3293 /* offsets will differ in the dense stripe case */
3294 data
->args
.offset
= data
->mds_offset
;
3295 data
->ds_clp
= NULL
;
3296 data
->args
.fh
= NFS_FH(data
->inode
);
3297 data
->read_done_cb
= nfs4_read_done_cb
;
3298 task
->tk_ops
= data
->mds_ops
;
3299 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3301 EXPORT_SYMBOL_GPL(nfs4_reset_read
);
3303 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3305 struct inode
*inode
= data
->inode
;
3307 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3308 rpc_restart_call_prepare(task
);
3311 if (task
->tk_status
>= 0) {
3312 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3313 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3318 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3320 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3322 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3323 nfs4_write_done_cb(task
, data
);
3326 /* Reset the the nfs_write_data to send the write to the MDS. */
3327 void nfs4_reset_write(struct rpc_task
*task
, struct nfs_write_data
*data
)
3329 dprintk("%s Reset task for i/o through\n", __func__
);
3330 put_lseg(data
->lseg
);
3332 data
->ds_clp
= NULL
;
3333 data
->write_done_cb
= nfs4_write_done_cb
;
3334 data
->args
.fh
= NFS_FH(data
->inode
);
3335 data
->args
.bitmask
= data
->res
.server
->cache_consistency_bitmask
;
3336 data
->args
.offset
= data
->mds_offset
;
3337 data
->res
.fattr
= &data
->fattr
;
3338 task
->tk_ops
= data
->mds_ops
;
3339 rpc_task_reset_client(task
, NFS_CLIENT(data
->inode
));
3341 EXPORT_SYMBOL_GPL(nfs4_reset_write
);
3343 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3345 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3348 data
->args
.bitmask
= NULL
;
3349 data
->res
.fattr
= NULL
;
3351 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3352 if (!data
->write_done_cb
)
3353 data
->write_done_cb
= nfs4_write_done_cb
;
3354 data
->res
.server
= server
;
3355 data
->timestamp
= jiffies
;
3357 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3358 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3361 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3363 struct inode
*inode
= data
->inode
;
3365 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3366 rpc_restart_call_prepare(task
);
3369 nfs_refresh_inode(inode
, data
->res
.fattr
);
3373 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3375 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3377 return data
->write_done_cb(task
, data
);
3380 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3382 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3385 data
->args
.bitmask
= NULL
;
3386 data
->res
.fattr
= NULL
;
3388 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3389 if (!data
->write_done_cb
)
3390 data
->write_done_cb
= nfs4_commit_done_cb
;
3391 data
->res
.server
= server
;
3392 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3393 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3396 struct nfs4_renewdata
{
3397 struct nfs_client
*client
;
3398 unsigned long timestamp
;
3402 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3403 * standalone procedure for queueing an asynchronous RENEW.
3405 static void nfs4_renew_release(void *calldata
)
3407 struct nfs4_renewdata
*data
= calldata
;
3408 struct nfs_client
*clp
= data
->client
;
3410 if (atomic_read(&clp
->cl_count
) > 1)
3411 nfs4_schedule_state_renewal(clp
);
3412 nfs_put_client(clp
);
3416 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3418 struct nfs4_renewdata
*data
= calldata
;
3419 struct nfs_client
*clp
= data
->client
;
3420 unsigned long timestamp
= data
->timestamp
;
3422 if (task
->tk_status
< 0) {
3423 /* Unless we're shutting down, schedule state recovery! */
3424 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3426 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3427 nfs4_schedule_lease_recovery(clp
);
3430 nfs4_schedule_path_down_recovery(clp
);
3432 do_renew_lease(clp
, timestamp
);
3435 static const struct rpc_call_ops nfs4_renew_ops
= {
3436 .rpc_call_done
= nfs4_renew_done
,
3437 .rpc_release
= nfs4_renew_release
,
3440 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3442 struct rpc_message msg
= {
3443 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3447 struct nfs4_renewdata
*data
;
3449 if (renew_flags
== 0)
3451 if (!atomic_inc_not_zero(&clp
->cl_count
))
3453 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3457 data
->timestamp
= jiffies
;
3458 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3459 &nfs4_renew_ops
, data
);
3462 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3464 struct rpc_message msg
= {
3465 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3469 unsigned long now
= jiffies
;
3472 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3475 do_renew_lease(clp
, now
);
3479 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3481 return (server
->caps
& NFS_CAP_ACLS
)
3482 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3483 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3486 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3487 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3490 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3492 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3493 struct page
**pages
, unsigned int *pgbase
)
3495 struct page
*newpage
, **spages
;
3501 len
= min_t(size_t, PAGE_CACHE_SIZE
, buflen
);
3502 newpage
= alloc_page(GFP_KERNEL
);
3504 if (newpage
== NULL
)
3506 memcpy(page_address(newpage
), buf
, len
);
3511 } while (buflen
!= 0);
3517 __free_page(spages
[rc
-1]);
3521 struct nfs4_cached_acl
{
3527 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3529 struct nfs_inode
*nfsi
= NFS_I(inode
);
3531 spin_lock(&inode
->i_lock
);
3532 kfree(nfsi
->nfs4_acl
);
3533 nfsi
->nfs4_acl
= acl
;
3534 spin_unlock(&inode
->i_lock
);
3537 static void nfs4_zap_acl_attr(struct inode
*inode
)
3539 nfs4_set_cached_acl(inode
, NULL
);
3542 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3544 struct nfs_inode
*nfsi
= NFS_I(inode
);
3545 struct nfs4_cached_acl
*acl
;
3548 spin_lock(&inode
->i_lock
);
3549 acl
= nfsi
->nfs4_acl
;
3552 if (buf
== NULL
) /* user is just asking for length */
3554 if (acl
->cached
== 0)
3556 ret
= -ERANGE
; /* see getxattr(2) man page */
3557 if (acl
->len
> buflen
)
3559 memcpy(buf
, acl
->data
, acl
->len
);
3563 spin_unlock(&inode
->i_lock
);
3567 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3569 struct nfs4_cached_acl
*acl
;
3571 if (buf
&& acl_len
<= PAGE_SIZE
) {
3572 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3576 memcpy(acl
->data
, buf
, acl_len
);
3578 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3585 nfs4_set_cached_acl(inode
, acl
);
3589 * The getxattr API returns the required buffer length when called with a
3590 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3591 * the required buf. On a NULL buf, we send a page of data to the server
3592 * guessing that the ACL request can be serviced by a page. If so, we cache
3593 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3594 * the cache. If not so, we throw away the page, and cache the required
3595 * length. The next getxattr call will then produce another round trip to
3596 * the server, this time with the input buf of the required size.
3598 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3600 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3601 struct nfs_getaclargs args
= {
3602 .fh
= NFS_FH(inode
),
3606 struct nfs_getaclres res
= {
3610 struct rpc_message msg
= {
3611 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3615 int ret
= -ENOMEM
, npages
, i
, acl_len
= 0;
3617 npages
= (buflen
+ PAGE_SIZE
- 1) >> PAGE_SHIFT
;
3618 /* As long as we're doing a round trip to the server anyway,
3619 * let's be prepared for a page of acl data. */
3623 for (i
= 0; i
< npages
; i
++) {
3624 pages
[i
] = alloc_page(GFP_KERNEL
);
3629 /* for decoding across pages */
3630 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3631 if (!res
.acl_scratch
)
3634 args
.acl_len
= npages
* PAGE_SIZE
;
3635 args
.acl_pgbase
= 0;
3636 /* Let decode_getfacl know not to fail if the ACL data is larger than
3637 * the page we send as a guess */
3639 res
.acl_flags
|= NFS4_ACL_LEN_REQUEST
;
3640 resp_buf
= page_address(pages
[0]);
3642 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3643 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3644 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3645 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3649 acl_len
= res
.acl_len
- res
.acl_data_offset
;
3650 if (acl_len
> args
.acl_len
)
3651 nfs4_write_cached_acl(inode
, NULL
, acl_len
);
3653 nfs4_write_cached_acl(inode
, resp_buf
+ res
.acl_data_offset
,
3657 if (acl_len
> buflen
)
3659 _copy_from_pages(buf
, pages
, res
.acl_data_offset
,
3664 for (i
= 0; i
< npages
; i
++)
3666 __free_page(pages
[i
]);
3667 if (res
.acl_scratch
)
3668 __free_page(res
.acl_scratch
);
3672 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3674 struct nfs4_exception exception
= { };
3677 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3680 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3681 } while (exception
.retry
);
3685 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3687 struct nfs_server
*server
= NFS_SERVER(inode
);
3690 if (!nfs4_server_supports_acls(server
))
3692 ret
= nfs_revalidate_inode(server
, inode
);
3695 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3696 nfs_zap_acl_cache(inode
);
3697 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3699 /* -ENOENT is returned if there is no ACL or if there is an ACL
3700 * but no cached acl data, just the acl length */
3702 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3705 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3707 struct nfs_server
*server
= NFS_SERVER(inode
);
3708 struct page
*pages
[NFS4ACL_MAXPAGES
];
3709 struct nfs_setaclargs arg
= {
3710 .fh
= NFS_FH(inode
),
3714 struct nfs_setaclres res
;
3715 struct rpc_message msg
= {
3716 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3722 if (!nfs4_server_supports_acls(server
))
3724 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3727 nfs_inode_return_delegation(inode
);
3728 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3731 * Free each page after tx, so the only ref left is
3732 * held by the network stack
3735 put_page(pages
[i
-1]);
3738 * Acl update can result in inode attribute update.
3739 * so mark the attribute cache invalid.
3741 spin_lock(&inode
->i_lock
);
3742 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3743 spin_unlock(&inode
->i_lock
);
3744 nfs_access_zap_cache(inode
);
3745 nfs_zap_acl_cache(inode
);
3749 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3751 struct nfs4_exception exception
= { };
3754 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3755 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3757 } while (exception
.retry
);
3762 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3764 struct nfs_client
*clp
= server
->nfs_client
;
3766 if (task
->tk_status
>= 0)
3768 switch(task
->tk_status
) {
3769 case -NFS4ERR_DELEG_REVOKED
:
3770 case -NFS4ERR_ADMIN_REVOKED
:
3771 case -NFS4ERR_BAD_STATEID
:
3773 nfs_remove_bad_delegation(state
->inode
);
3774 case -NFS4ERR_OPENMODE
:
3777 nfs4_schedule_stateid_recovery(server
, state
);
3778 goto wait_on_recovery
;
3779 case -NFS4ERR_EXPIRED
:
3781 nfs4_schedule_stateid_recovery(server
, state
);
3782 case -NFS4ERR_STALE_STATEID
:
3783 case -NFS4ERR_STALE_CLIENTID
:
3784 nfs4_schedule_lease_recovery(clp
);
3785 goto wait_on_recovery
;
3786 #if defined(CONFIG_NFS_V4_1)
3787 case -NFS4ERR_BADSESSION
:
3788 case -NFS4ERR_BADSLOT
:
3789 case -NFS4ERR_BAD_HIGH_SLOT
:
3790 case -NFS4ERR_DEADSESSION
:
3791 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3792 case -NFS4ERR_SEQ_FALSE_RETRY
:
3793 case -NFS4ERR_SEQ_MISORDERED
:
3794 dprintk("%s ERROR %d, Reset session\n", __func__
,
3796 nfs4_schedule_session_recovery(clp
->cl_session
);
3797 task
->tk_status
= 0;
3799 #endif /* CONFIG_NFS_V4_1 */
3800 case -NFS4ERR_DELAY
:
3801 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3802 case -NFS4ERR_GRACE
:
3804 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3805 task
->tk_status
= 0;
3807 case -NFS4ERR_RETRY_UNCACHED_REP
:
3808 case -NFS4ERR_OLD_STATEID
:
3809 task
->tk_status
= 0;
3812 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3815 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3816 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3817 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3818 task
->tk_status
= 0;
3822 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
3823 unsigned short port
, struct rpc_cred
*cred
,
3824 struct nfs4_setclientid_res
*res
)
3826 nfs4_verifier sc_verifier
;
3827 struct nfs4_setclientid setclientid
= {
3828 .sc_verifier
= &sc_verifier
,
3830 .sc_cb_ident
= clp
->cl_cb_ident
,
3832 struct rpc_message msg
= {
3833 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3834 .rpc_argp
= &setclientid
,
3842 p
= (__be32
*)sc_verifier
.data
;
3843 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3844 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3848 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3849 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3851 rpc_peeraddr2str(clp
->cl_rpcclient
,
3853 rpc_peeraddr2str(clp
->cl_rpcclient
,
3855 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3856 clp
->cl_id_uniquifier
);
3857 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3858 sizeof(setclientid
.sc_netid
),
3859 rpc_peeraddr2str(clp
->cl_rpcclient
,
3860 RPC_DISPLAY_NETID
));
3861 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3862 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3863 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3866 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3867 if (status
!= -NFS4ERR_CLID_INUSE
)
3870 ++clp
->cl_id_uniquifier
;
3874 ssleep(clp
->cl_lease_time
/ HZ
+ 1);
3879 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3880 struct nfs4_setclientid_res
*arg
,
3881 struct rpc_cred
*cred
)
3883 struct nfs_fsinfo fsinfo
;
3884 struct rpc_message msg
= {
3885 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3887 .rpc_resp
= &fsinfo
,
3894 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3896 spin_lock(&clp
->cl_lock
);
3897 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3898 clp
->cl_last_renewal
= now
;
3899 spin_unlock(&clp
->cl_lock
);
3904 struct nfs4_delegreturndata
{
3905 struct nfs4_delegreturnargs args
;
3906 struct nfs4_delegreturnres res
;
3908 nfs4_stateid stateid
;
3909 unsigned long timestamp
;
3910 struct nfs_fattr fattr
;
3914 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3916 struct nfs4_delegreturndata
*data
= calldata
;
3918 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3921 switch (task
->tk_status
) {
3922 case -NFS4ERR_STALE_STATEID
:
3923 case -NFS4ERR_EXPIRED
:
3925 renew_lease(data
->res
.server
, data
->timestamp
);
3928 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
3930 rpc_restart_call_prepare(task
);
3934 data
->rpc_status
= task
->tk_status
;
3937 static void nfs4_delegreturn_release(void *calldata
)
3942 #if defined(CONFIG_NFS_V4_1)
3943 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3945 struct nfs4_delegreturndata
*d_data
;
3947 d_data
= (struct nfs4_delegreturndata
*)data
;
3949 if (nfs4_setup_sequence(d_data
->res
.server
,
3950 &d_data
->args
.seq_args
,
3951 &d_data
->res
.seq_res
, task
))
3953 rpc_call_start(task
);
3955 #endif /* CONFIG_NFS_V4_1 */
3957 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3958 #if defined(CONFIG_NFS_V4_1)
3959 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3960 #endif /* CONFIG_NFS_V4_1 */
3961 .rpc_call_done
= nfs4_delegreturn_done
,
3962 .rpc_release
= nfs4_delegreturn_release
,
3965 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3967 struct nfs4_delegreturndata
*data
;
3968 struct nfs_server
*server
= NFS_SERVER(inode
);
3969 struct rpc_task
*task
;
3970 struct rpc_message msg
= {
3971 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3974 struct rpc_task_setup task_setup_data
= {
3975 .rpc_client
= server
->client
,
3976 .rpc_message
= &msg
,
3977 .callback_ops
= &nfs4_delegreturn_ops
,
3978 .flags
= RPC_TASK_ASYNC
,
3982 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
3985 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3986 data
->args
.fhandle
= &data
->fh
;
3987 data
->args
.stateid
= &data
->stateid
;
3988 data
->args
.bitmask
= server
->attr_bitmask
;
3989 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3990 nfs4_stateid_copy(&data
->stateid
, stateid
);
3991 data
->res
.fattr
= &data
->fattr
;
3992 data
->res
.server
= server
;
3993 nfs_fattr_init(data
->res
.fattr
);
3994 data
->timestamp
= jiffies
;
3995 data
->rpc_status
= 0;
3997 task_setup_data
.callback_data
= data
;
3998 msg
.rpc_argp
= &data
->args
;
3999 msg
.rpc_resp
= &data
->res
;
4000 task
= rpc_run_task(&task_setup_data
);
4002 return PTR_ERR(task
);
4005 status
= nfs4_wait_for_completion_rpc_task(task
);
4008 status
= data
->rpc_status
;
4011 nfs_refresh_inode(inode
, &data
->fattr
);
4017 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4019 struct nfs_server
*server
= NFS_SERVER(inode
);
4020 struct nfs4_exception exception
= { };
4023 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4025 case -NFS4ERR_STALE_STATEID
:
4026 case -NFS4ERR_EXPIRED
:
4030 err
= nfs4_handle_exception(server
, err
, &exception
);
4031 } while (exception
.retry
);
4035 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4036 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4039 * sleep, with exponential backoff, and retry the LOCK operation.
4041 static unsigned long
4042 nfs4_set_lock_task_retry(unsigned long timeout
)
4044 freezable_schedule_timeout_killable(timeout
);
4046 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4047 return NFS4_LOCK_MAXTIMEOUT
;
4051 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4053 struct inode
*inode
= state
->inode
;
4054 struct nfs_server
*server
= NFS_SERVER(inode
);
4055 struct nfs_client
*clp
= server
->nfs_client
;
4056 struct nfs_lockt_args arg
= {
4057 .fh
= NFS_FH(inode
),
4060 struct nfs_lockt_res res
= {
4063 struct rpc_message msg
= {
4064 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4067 .rpc_cred
= state
->owner
->so_cred
,
4069 struct nfs4_lock_state
*lsp
;
4072 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4073 status
= nfs4_set_lock_state(state
, request
);
4076 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4077 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4078 arg
.lock_owner
.s_dev
= server
->s_dev
;
4079 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4082 request
->fl_type
= F_UNLCK
;
4084 case -NFS4ERR_DENIED
:
4087 request
->fl_ops
->fl_release_private(request
);
4092 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4094 struct nfs4_exception exception
= { };
4098 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4099 _nfs4_proc_getlk(state
, cmd
, request
),
4101 } while (exception
.retry
);
4105 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4108 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4110 res
= posix_lock_file_wait(file
, fl
);
4113 res
= flock_lock_file_wait(file
, fl
);
4121 struct nfs4_unlockdata
{
4122 struct nfs_locku_args arg
;
4123 struct nfs_locku_res res
;
4124 struct nfs4_lock_state
*lsp
;
4125 struct nfs_open_context
*ctx
;
4126 struct file_lock fl
;
4127 const struct nfs_server
*server
;
4128 unsigned long timestamp
;
4131 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4132 struct nfs_open_context
*ctx
,
4133 struct nfs4_lock_state
*lsp
,
4134 struct nfs_seqid
*seqid
)
4136 struct nfs4_unlockdata
*p
;
4137 struct inode
*inode
= lsp
->ls_state
->inode
;
4139 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4142 p
->arg
.fh
= NFS_FH(inode
);
4144 p
->arg
.seqid
= seqid
;
4145 p
->res
.seqid
= seqid
;
4146 p
->arg
.stateid
= &lsp
->ls_stateid
;
4148 atomic_inc(&lsp
->ls_count
);
4149 /* Ensure we don't close file until we're done freeing locks! */
4150 p
->ctx
= get_nfs_open_context(ctx
);
4151 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4152 p
->server
= NFS_SERVER(inode
);
4156 static void nfs4_locku_release_calldata(void *data
)
4158 struct nfs4_unlockdata
*calldata
= data
;
4159 nfs_free_seqid(calldata
->arg
.seqid
);
4160 nfs4_put_lock_state(calldata
->lsp
);
4161 put_nfs_open_context(calldata
->ctx
);
4165 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4167 struct nfs4_unlockdata
*calldata
= data
;
4169 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4171 switch (task
->tk_status
) {
4173 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4174 &calldata
->res
.stateid
);
4175 renew_lease(calldata
->server
, calldata
->timestamp
);
4177 case -NFS4ERR_BAD_STATEID
:
4178 case -NFS4ERR_OLD_STATEID
:
4179 case -NFS4ERR_STALE_STATEID
:
4180 case -NFS4ERR_EXPIRED
:
4183 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4184 rpc_restart_call_prepare(task
);
4188 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4190 struct nfs4_unlockdata
*calldata
= data
;
4192 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4194 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
4195 /* Note: exit _without_ running nfs4_locku_done */
4196 task
->tk_action
= NULL
;
4199 calldata
->timestamp
= jiffies
;
4200 if (nfs4_setup_sequence(calldata
->server
,
4201 &calldata
->arg
.seq_args
,
4202 &calldata
->res
.seq_res
, task
))
4204 rpc_call_start(task
);
4207 static const struct rpc_call_ops nfs4_locku_ops
= {
4208 .rpc_call_prepare
= nfs4_locku_prepare
,
4209 .rpc_call_done
= nfs4_locku_done
,
4210 .rpc_release
= nfs4_locku_release_calldata
,
4213 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4214 struct nfs_open_context
*ctx
,
4215 struct nfs4_lock_state
*lsp
,
4216 struct nfs_seqid
*seqid
)
4218 struct nfs4_unlockdata
*data
;
4219 struct rpc_message msg
= {
4220 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4221 .rpc_cred
= ctx
->cred
,
4223 struct rpc_task_setup task_setup_data
= {
4224 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4225 .rpc_message
= &msg
,
4226 .callback_ops
= &nfs4_locku_ops
,
4227 .workqueue
= nfsiod_workqueue
,
4228 .flags
= RPC_TASK_ASYNC
,
4231 /* Ensure this is an unlock - when canceling a lock, the
4232 * canceled lock is passed in, and it won't be an unlock.
4234 fl
->fl_type
= F_UNLCK
;
4236 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4238 nfs_free_seqid(seqid
);
4239 return ERR_PTR(-ENOMEM
);
4242 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4243 msg
.rpc_argp
= &data
->arg
;
4244 msg
.rpc_resp
= &data
->res
;
4245 task_setup_data
.callback_data
= data
;
4246 return rpc_run_task(&task_setup_data
);
4249 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4251 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4252 struct nfs_seqid
*seqid
;
4253 struct nfs4_lock_state
*lsp
;
4254 struct rpc_task
*task
;
4256 unsigned char fl_flags
= request
->fl_flags
;
4258 status
= nfs4_set_lock_state(state
, request
);
4259 /* Unlock _before_ we do the RPC call */
4260 request
->fl_flags
|= FL_EXISTS
;
4261 down_read(&nfsi
->rwsem
);
4262 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4263 up_read(&nfsi
->rwsem
);
4266 up_read(&nfsi
->rwsem
);
4269 /* Is this a delegated lock? */
4270 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4272 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4273 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4277 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4278 status
= PTR_ERR(task
);
4281 status
= nfs4_wait_for_completion_rpc_task(task
);
4284 request
->fl_flags
= fl_flags
;
4288 struct nfs4_lockdata
{
4289 struct nfs_lock_args arg
;
4290 struct nfs_lock_res res
;
4291 struct nfs4_lock_state
*lsp
;
4292 struct nfs_open_context
*ctx
;
4293 struct file_lock fl
;
4294 unsigned long timestamp
;
4297 struct nfs_server
*server
;
4300 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4301 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4304 struct nfs4_lockdata
*p
;
4305 struct inode
*inode
= lsp
->ls_state
->inode
;
4306 struct nfs_server
*server
= NFS_SERVER(inode
);
4308 p
= kzalloc(sizeof(*p
), gfp_mask
);
4312 p
->arg
.fh
= NFS_FH(inode
);
4314 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4315 if (p
->arg
.open_seqid
== NULL
)
4317 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4318 if (p
->arg
.lock_seqid
== NULL
)
4319 goto out_free_seqid
;
4320 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4321 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4322 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4323 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4324 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4327 atomic_inc(&lsp
->ls_count
);
4328 p
->ctx
= get_nfs_open_context(ctx
);
4329 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4332 nfs_free_seqid(p
->arg
.open_seqid
);
4338 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4340 struct nfs4_lockdata
*data
= calldata
;
4341 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4343 dprintk("%s: begin!\n", __func__
);
4344 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4346 /* Do we need to do an open_to_lock_owner? */
4347 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4348 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4350 data
->arg
.open_stateid
= &state
->stateid
;
4351 data
->arg
.new_lock_owner
= 1;
4352 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4354 data
->arg
.new_lock_owner
= 0;
4355 data
->timestamp
= jiffies
;
4356 if (nfs4_setup_sequence(data
->server
,
4357 &data
->arg
.seq_args
,
4358 &data
->res
.seq_res
, task
))
4360 rpc_call_start(task
);
4361 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4364 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4366 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4367 nfs4_lock_prepare(task
, calldata
);
4370 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4372 struct nfs4_lockdata
*data
= calldata
;
4374 dprintk("%s: begin!\n", __func__
);
4376 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4379 data
->rpc_status
= task
->tk_status
;
4380 if (data
->arg
.new_lock_owner
!= 0) {
4381 if (data
->rpc_status
== 0)
4382 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4386 if (data
->rpc_status
== 0) {
4387 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4388 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4389 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4392 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4395 static void nfs4_lock_release(void *calldata
)
4397 struct nfs4_lockdata
*data
= calldata
;
4399 dprintk("%s: begin!\n", __func__
);
4400 nfs_free_seqid(data
->arg
.open_seqid
);
4401 if (data
->cancelled
!= 0) {
4402 struct rpc_task
*task
;
4403 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4404 data
->arg
.lock_seqid
);
4406 rpc_put_task_async(task
);
4407 dprintk("%s: cancelling lock!\n", __func__
);
4409 nfs_free_seqid(data
->arg
.lock_seqid
);
4410 nfs4_put_lock_state(data
->lsp
);
4411 put_nfs_open_context(data
->ctx
);
4413 dprintk("%s: done!\n", __func__
);
4416 static const struct rpc_call_ops nfs4_lock_ops
= {
4417 .rpc_call_prepare
= nfs4_lock_prepare
,
4418 .rpc_call_done
= nfs4_lock_done
,
4419 .rpc_release
= nfs4_lock_release
,
4422 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4423 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4424 .rpc_call_done
= nfs4_lock_done
,
4425 .rpc_release
= nfs4_lock_release
,
4428 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4431 case -NFS4ERR_ADMIN_REVOKED
:
4432 case -NFS4ERR_BAD_STATEID
:
4433 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4434 if (new_lock_owner
!= 0 ||
4435 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4436 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4438 case -NFS4ERR_STALE_STATEID
:
4439 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4440 case -NFS4ERR_EXPIRED
:
4441 nfs4_schedule_lease_recovery(server
->nfs_client
);
4445 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4447 struct nfs4_lockdata
*data
;
4448 struct rpc_task
*task
;
4449 struct rpc_message msg
= {
4450 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4451 .rpc_cred
= state
->owner
->so_cred
,
4453 struct rpc_task_setup task_setup_data
= {
4454 .rpc_client
= NFS_CLIENT(state
->inode
),
4455 .rpc_message
= &msg
,
4456 .callback_ops
= &nfs4_lock_ops
,
4457 .workqueue
= nfsiod_workqueue
,
4458 .flags
= RPC_TASK_ASYNC
,
4462 dprintk("%s: begin!\n", __func__
);
4463 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4464 fl
->fl_u
.nfs4_fl
.owner
,
4465 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4469 data
->arg
.block
= 1;
4470 if (recovery_type
> NFS_LOCK_NEW
) {
4471 if (recovery_type
== NFS_LOCK_RECLAIM
)
4472 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4473 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4475 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4476 msg
.rpc_argp
= &data
->arg
;
4477 msg
.rpc_resp
= &data
->res
;
4478 task_setup_data
.callback_data
= data
;
4479 task
= rpc_run_task(&task_setup_data
);
4481 return PTR_ERR(task
);
4482 ret
= nfs4_wait_for_completion_rpc_task(task
);
4484 ret
= data
->rpc_status
;
4486 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4487 data
->arg
.new_lock_owner
, ret
);
4489 data
->cancelled
= 1;
4491 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4495 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4497 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4498 struct nfs4_exception exception
= { };
4502 /* Cache the lock if possible... */
4503 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4505 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4506 if (err
!= -NFS4ERR_DELAY
)
4508 nfs4_handle_exception(server
, err
, &exception
);
4509 } while (exception
.retry
);
4513 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4515 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4516 struct nfs4_exception exception
= { };
4519 err
= nfs4_set_lock_state(state
, request
);
4523 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4525 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4529 case -NFS4ERR_GRACE
:
4530 case -NFS4ERR_DELAY
:
4531 nfs4_handle_exception(server
, err
, &exception
);
4534 } while (exception
.retry
);
4539 #if defined(CONFIG_NFS_V4_1)
4540 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4542 int status
, ret
= NFS_OK
;
4543 struct nfs4_lock_state
*lsp
;
4544 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4546 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4547 if (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) {
4548 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4549 if (status
!= NFS_OK
) {
4550 nfs41_free_stateid(server
, &lsp
->ls_stateid
);
4551 lsp
->ls_flags
&= ~NFS_LOCK_INITIALIZED
;
4560 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4562 int status
= NFS_OK
;
4564 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4565 status
= nfs41_check_expired_locks(state
);
4566 if (status
== NFS_OK
)
4568 return nfs4_lock_expired(state
, request
);
4572 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4574 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4575 unsigned char fl_flags
= request
->fl_flags
;
4576 int status
= -ENOLCK
;
4578 if ((fl_flags
& FL_POSIX
) &&
4579 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4581 /* Is this a delegated open? */
4582 status
= nfs4_set_lock_state(state
, request
);
4585 request
->fl_flags
|= FL_ACCESS
;
4586 status
= do_vfs_lock(request
->fl_file
, request
);
4589 down_read(&nfsi
->rwsem
);
4590 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4591 /* Yes: cache locks! */
4592 /* ...but avoid races with delegation recall... */
4593 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4594 status
= do_vfs_lock(request
->fl_file
, request
);
4597 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4600 /* Note: we always want to sleep here! */
4601 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4602 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4603 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4604 "manager!\n", __func__
);
4606 up_read(&nfsi
->rwsem
);
4608 request
->fl_flags
= fl_flags
;
4612 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4614 struct nfs4_exception exception
= {
4620 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4621 if (err
== -NFS4ERR_DENIED
)
4623 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4625 } while (exception
.retry
);
4630 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4632 struct nfs_open_context
*ctx
;
4633 struct nfs4_state
*state
;
4634 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4637 /* verify open state */
4638 ctx
= nfs_file_open_context(filp
);
4641 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4644 if (IS_GETLK(cmd
)) {
4646 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4650 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4653 if (request
->fl_type
== F_UNLCK
) {
4655 return nfs4_proc_unlck(state
, cmd
, request
);
4662 status
= nfs4_proc_setlk(state
, cmd
, request
);
4663 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4665 timeout
= nfs4_set_lock_task_retry(timeout
);
4666 status
= -ERESTARTSYS
;
4669 } while(status
< 0);
4673 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4675 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4676 struct nfs4_exception exception
= { };
4679 err
= nfs4_set_lock_state(state
, fl
);
4683 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4686 printk(KERN_ERR
"NFS: %s: unhandled error "
4687 "%d.\n", __func__
, err
);
4691 case -NFS4ERR_EXPIRED
:
4692 nfs4_schedule_stateid_recovery(server
, state
);
4693 case -NFS4ERR_STALE_CLIENTID
:
4694 case -NFS4ERR_STALE_STATEID
:
4695 nfs4_schedule_lease_recovery(server
->nfs_client
);
4697 case -NFS4ERR_BADSESSION
:
4698 case -NFS4ERR_BADSLOT
:
4699 case -NFS4ERR_BAD_HIGH_SLOT
:
4700 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4701 case -NFS4ERR_DEADSESSION
:
4702 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
4706 * The show must go on: exit, but mark the
4707 * stateid as needing recovery.
4709 case -NFS4ERR_DELEG_REVOKED
:
4710 case -NFS4ERR_ADMIN_REVOKED
:
4711 case -NFS4ERR_BAD_STATEID
:
4712 case -NFS4ERR_OPENMODE
:
4713 nfs4_schedule_stateid_recovery(server
, state
);
4718 * User RPCSEC_GSS context has expired.
4719 * We cannot recover this stateid now, so
4720 * skip it and allow recovery thread to
4726 case -NFS4ERR_DENIED
:
4727 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4730 case -NFS4ERR_DELAY
:
4733 err
= nfs4_handle_exception(server
, err
, &exception
);
4734 } while (exception
.retry
);
4739 static void nfs4_release_lockowner_release(void *calldata
)
4744 const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4745 .rpc_release
= nfs4_release_lockowner_release
,
4748 void nfs4_release_lockowner(const struct nfs4_lock_state
*lsp
)
4750 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4751 struct nfs_release_lockowner_args
*args
;
4752 struct rpc_message msg
= {
4753 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4756 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
4758 args
= kmalloc(sizeof(*args
), GFP_NOFS
);
4761 args
->lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4762 args
->lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4763 args
->lock_owner
.s_dev
= server
->s_dev
;
4764 msg
.rpc_argp
= args
;
4765 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, args
);
4768 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4770 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
4771 const void *buf
, size_t buflen
,
4772 int flags
, int type
)
4774 if (strcmp(key
, "") != 0)
4777 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
4780 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
4781 void *buf
, size_t buflen
, int type
)
4783 if (strcmp(key
, "") != 0)
4786 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
4789 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
4790 size_t list_len
, const char *name
,
4791 size_t name_len
, int type
)
4793 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
4795 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4798 if (list
&& len
<= list_len
)
4799 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
4804 * nfs_fhget will use either the mounted_on_fileid or the fileid
4806 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4808 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
4809 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
4810 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4811 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
4814 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4815 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
4816 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4820 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4821 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4823 struct nfs_server
*server
= NFS_SERVER(dir
);
4825 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4827 struct nfs4_fs_locations_arg args
= {
4828 .dir_fh
= NFS_FH(dir
),
4833 struct nfs4_fs_locations_res res
= {
4834 .fs_locations
= fs_locations
,
4836 struct rpc_message msg
= {
4837 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4843 dprintk("%s: start\n", __func__
);
4845 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
4846 * is not supported */
4847 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
4848 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
4850 bitmask
[0] |= FATTR4_WORD0_FILEID
;
4852 nfs_fattr_init(&fs_locations
->fattr
);
4853 fs_locations
->server
= server
;
4854 fs_locations
->nlocations
= 0;
4855 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4856 dprintk("%s: returned status = %d\n", __func__
, status
);
4860 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4863 struct nfs4_secinfo_arg args
= {
4864 .dir_fh
= NFS_FH(dir
),
4867 struct nfs4_secinfo_res res
= {
4870 struct rpc_message msg
= {
4871 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
4876 dprintk("NFS call secinfo %s\n", name
->name
);
4877 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4878 dprintk("NFS reply secinfo: %d\n", status
);
4882 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
4884 struct nfs4_exception exception
= { };
4887 err
= nfs4_handle_exception(NFS_SERVER(dir
),
4888 _nfs4_proc_secinfo(dir
, name
, flavors
),
4890 } while (exception
.retry
);
4894 #ifdef CONFIG_NFS_V4_1
4896 * Check the exchange flags returned by the server for invalid flags, having
4897 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
4900 static int nfs4_check_cl_exchange_flags(u32 flags
)
4902 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
4904 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
4905 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
4907 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
4911 return -NFS4ERR_INVAL
;
4915 nfs41_same_server_scope(struct server_scope
*a
, struct server_scope
*b
)
4917 if (a
->server_scope_sz
== b
->server_scope_sz
&&
4918 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
4925 * nfs4_proc_exchange_id()
4927 * Since the clientid has expired, all compounds using sessions
4928 * associated with the stale clientid will be returning
4929 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4930 * be in some phase of session reset.
4932 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4934 nfs4_verifier verifier
;
4935 struct nfs41_exchange_id_args args
= {
4937 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
4939 struct nfs41_exchange_id_res res
= {
4943 struct rpc_message msg
= {
4944 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4951 dprintk("--> %s\n", __func__
);
4952 BUG_ON(clp
== NULL
);
4954 p
= (u32
*)verifier
.data
;
4955 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4956 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4957 args
.verifier
= &verifier
;
4959 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4962 init_utsname()->nodename
,
4963 init_utsname()->domainname
,
4964 clp
->cl_rpcclient
->cl_auth
->au_flavor
);
4966 res
.server_scope
= kzalloc(sizeof(struct server_scope
), GFP_KERNEL
);
4967 if (unlikely(!res
.server_scope
)) {
4972 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_KERNEL
);
4973 if (unlikely(!res
.impl_id
)) {
4975 goto out_server_scope
;
4978 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4980 status
= nfs4_check_cl_exchange_flags(clp
->cl_exchange_flags
);
4983 /* use the most recent implementation id */
4984 kfree(clp
->impl_id
);
4985 clp
->impl_id
= res
.impl_id
;
4990 if (clp
->server_scope
&&
4991 !nfs41_same_server_scope(clp
->server_scope
,
4992 res
.server_scope
)) {
4993 dprintk("%s: server_scope mismatch detected\n",
4995 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
4996 kfree(clp
->server_scope
);
4997 clp
->server_scope
= NULL
;
5000 if (!clp
->server_scope
) {
5001 clp
->server_scope
= res
.server_scope
;
5007 kfree(res
.server_scope
);
5010 dprintk("%s: Server Implementation ID: "
5011 "domain: %s, name: %s, date: %llu,%u\n",
5012 __func__
, clp
->impl_id
->domain
, clp
->impl_id
->name
,
5013 clp
->impl_id
->date
.seconds
,
5014 clp
->impl_id
->date
.nseconds
);
5015 dprintk("<-- %s status= %d\n", __func__
, status
);
5019 struct nfs4_get_lease_time_data
{
5020 struct nfs4_get_lease_time_args
*args
;
5021 struct nfs4_get_lease_time_res
*res
;
5022 struct nfs_client
*clp
;
5025 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5029 struct nfs4_get_lease_time_data
*data
=
5030 (struct nfs4_get_lease_time_data
*)calldata
;
5032 dprintk("--> %s\n", __func__
);
5033 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5034 /* just setup sequence, do not trigger session recovery
5035 since we're invoked within one */
5036 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
5037 &data
->args
->la_seq_args
,
5038 &data
->res
->lr_seq_res
, task
);
5040 BUG_ON(ret
== -EAGAIN
);
5041 rpc_call_start(task
);
5042 dprintk("<-- %s\n", __func__
);
5046 * Called from nfs4_state_manager thread for session setup, so don't recover
5047 * from sequence operation or clientid errors.
5049 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5051 struct nfs4_get_lease_time_data
*data
=
5052 (struct nfs4_get_lease_time_data
*)calldata
;
5054 dprintk("--> %s\n", __func__
);
5055 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5057 switch (task
->tk_status
) {
5058 case -NFS4ERR_DELAY
:
5059 case -NFS4ERR_GRACE
:
5060 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5061 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5062 task
->tk_status
= 0;
5064 case -NFS4ERR_RETRY_UNCACHED_REP
:
5065 rpc_restart_call_prepare(task
);
5068 dprintk("<-- %s\n", __func__
);
5071 struct rpc_call_ops nfs4_get_lease_time_ops
= {
5072 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5073 .rpc_call_done
= nfs4_get_lease_time_done
,
5076 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5078 struct rpc_task
*task
;
5079 struct nfs4_get_lease_time_args args
;
5080 struct nfs4_get_lease_time_res res
= {
5081 .lr_fsinfo
= fsinfo
,
5083 struct nfs4_get_lease_time_data data
= {
5088 struct rpc_message msg
= {
5089 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5093 struct rpc_task_setup task_setup
= {
5094 .rpc_client
= clp
->cl_rpcclient
,
5095 .rpc_message
= &msg
,
5096 .callback_ops
= &nfs4_get_lease_time_ops
,
5097 .callback_data
= &data
,
5098 .flags
= RPC_TASK_TIMEOUT
,
5102 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5103 dprintk("--> %s\n", __func__
);
5104 task
= rpc_run_task(&task_setup
);
5107 status
= PTR_ERR(task
);
5109 status
= task
->tk_status
;
5112 dprintk("<-- %s return %d\n", __func__
, status
);
5117 static struct nfs4_slot
*nfs4_alloc_slots(u32 max_slots
, gfp_t gfp_flags
)
5119 return kcalloc(max_slots
, sizeof(struct nfs4_slot
), gfp_flags
);
5122 static void nfs4_add_and_init_slots(struct nfs4_slot_table
*tbl
,
5123 struct nfs4_slot
*new,
5127 struct nfs4_slot
*old
= NULL
;
5130 spin_lock(&tbl
->slot_tbl_lock
);
5134 tbl
->max_slots
= max_slots
;
5136 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
5137 for (i
= 0; i
< tbl
->max_slots
; i
++)
5138 tbl
->slots
[i
].seq_nr
= ivalue
;
5139 spin_unlock(&tbl
->slot_tbl_lock
);
5144 * (re)Initialise a slot table
5146 static int nfs4_realloc_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
5149 struct nfs4_slot
*new = NULL
;
5152 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
5153 max_reqs
, tbl
->max_slots
);
5155 /* Does the newly negotiated max_reqs match the existing slot table? */
5156 if (max_reqs
!= tbl
->max_slots
) {
5157 new = nfs4_alloc_slots(max_reqs
, GFP_NOFS
);
5163 nfs4_add_and_init_slots(tbl
, new, max_reqs
, ivalue
);
5164 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5165 tbl
, tbl
->slots
, tbl
->max_slots
);
5167 dprintk("<-- %s: return %d\n", __func__
, ret
);
5171 /* Destroy the slot table */
5172 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
5174 if (session
->fc_slot_table
.slots
!= NULL
) {
5175 kfree(session
->fc_slot_table
.slots
);
5176 session
->fc_slot_table
.slots
= NULL
;
5178 if (session
->bc_slot_table
.slots
!= NULL
) {
5179 kfree(session
->bc_slot_table
.slots
);
5180 session
->bc_slot_table
.slots
= NULL
;
5186 * Initialize or reset the forechannel and backchannel tables
5188 static int nfs4_setup_session_slot_tables(struct nfs4_session
*ses
)
5190 struct nfs4_slot_table
*tbl
;
5193 dprintk("--> %s\n", __func__
);
5195 tbl
= &ses
->fc_slot_table
;
5196 status
= nfs4_realloc_slot_table(tbl
, ses
->fc_attrs
.max_reqs
, 1);
5197 if (status
) /* -ENOMEM */
5200 tbl
= &ses
->bc_slot_table
;
5201 status
= nfs4_realloc_slot_table(tbl
, ses
->bc_attrs
.max_reqs
, 0);
5202 if (status
&& tbl
->slots
== NULL
)
5203 /* Fore and back channel share a connection so get
5204 * both slot tables or neither */
5205 nfs4_destroy_slot_tables(ses
);
5209 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5211 struct nfs4_session
*session
;
5212 struct nfs4_slot_table
*tbl
;
5214 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5218 tbl
= &session
->fc_slot_table
;
5219 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5220 spin_lock_init(&tbl
->slot_tbl_lock
);
5221 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5222 init_completion(&tbl
->complete
);
5224 tbl
= &session
->bc_slot_table
;
5225 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5226 spin_lock_init(&tbl
->slot_tbl_lock
);
5227 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5228 init_completion(&tbl
->complete
);
5230 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5236 void nfs4_destroy_session(struct nfs4_session
*session
)
5238 struct rpc_xprt
*xprt
;
5240 nfs4_proc_destroy_session(session
);
5243 xprt
= rcu_dereference(session
->clp
->cl_rpcclient
->cl_xprt
);
5245 dprintk("%s Destroy backchannel for xprt %p\n",
5247 xprt_destroy_backchannel(xprt
, NFS41_BC_MIN_CALLBACKS
);
5248 nfs4_destroy_slot_tables(session
);
5253 * Initialize the values to be used by the client in CREATE_SESSION
5254 * If nfs4_init_session set the fore channel request and response sizes,
5257 * Set the back channel max_resp_sz_cached to zero to force the client to
5258 * always set csa_cachethis to FALSE because the current implementation
5259 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5261 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5263 struct nfs4_session
*session
= args
->client
->cl_session
;
5264 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5265 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5268 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5270 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5271 /* Fore channel attributes */
5272 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5273 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5274 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5275 args
->fc_attrs
.max_reqs
= max_session_slots
;
5277 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5278 "max_ops=%u max_reqs=%u\n",
5280 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5281 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5283 /* Back channel attributes */
5284 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5285 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5286 args
->bc_attrs
.max_resp_sz_cached
= 0;
5287 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5288 args
->bc_attrs
.max_reqs
= 1;
5290 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5291 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5293 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5294 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5295 args
->bc_attrs
.max_reqs
);
5298 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5300 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5301 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5303 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5306 * Our requested max_ops is the minimum we need; we're not
5307 * prepared to break up compounds into smaller pieces than that.
5308 * So, no point even trying to continue if the server won't
5311 if (rcvd
->max_ops
< sent
->max_ops
)
5313 if (rcvd
->max_reqs
== 0)
5315 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5316 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5320 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5322 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5323 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5325 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5327 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5329 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5331 /* These would render the backchannel useless: */
5332 if (rcvd
->max_ops
!= sent
->max_ops
)
5334 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5339 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5340 struct nfs4_session
*session
)
5344 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5347 return nfs4_verify_back_channel_attrs(args
, session
);
5350 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
5352 struct nfs4_session
*session
= clp
->cl_session
;
5353 struct nfs41_create_session_args args
= {
5355 .cb_program
= NFS4_CALLBACK
,
5357 struct nfs41_create_session_res res
= {
5360 struct rpc_message msg
= {
5361 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5367 nfs4_init_channel_attrs(&args
);
5368 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5370 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5373 /* Verify the session's negotiated channel_attrs values */
5374 status
= nfs4_verify_channel_attrs(&args
, session
);
5376 /* Increment the clientid slot sequence id */
5384 * Issues a CREATE_SESSION operation to the server.
5385 * It is the responsibility of the caller to verify the session is
5386 * expired before calling this routine.
5388 int nfs4_proc_create_session(struct nfs_client
*clp
)
5392 struct nfs4_session
*session
= clp
->cl_session
;
5394 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5396 status
= _nfs4_proc_create_session(clp
);
5400 /* Init or reset the session slot tables */
5401 status
= nfs4_setup_session_slot_tables(session
);
5402 dprintk("slot table setup returned %d\n", status
);
5406 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5407 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5408 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5410 dprintk("<-- %s\n", __func__
);
5415 * Issue the over-the-wire RPC DESTROY_SESSION.
5416 * The caller must serialize access to this routine.
5418 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
5421 struct rpc_message msg
;
5423 dprintk("--> nfs4_proc_destroy_session\n");
5425 /* session is still being setup */
5426 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5429 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
5430 msg
.rpc_argp
= session
;
5431 msg
.rpc_resp
= NULL
;
5432 msg
.rpc_cred
= NULL
;
5433 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5437 "NFS: Got error %d from the server on DESTROY_SESSION. "
5438 "Session has been destroyed regardless...\n", status
);
5440 dprintk("<-- nfs4_proc_destroy_session\n");
5444 int nfs4_init_session(struct nfs_server
*server
)
5446 struct nfs_client
*clp
= server
->nfs_client
;
5447 struct nfs4_session
*session
;
5448 unsigned int rsize
, wsize
;
5451 if (!nfs4_has_session(clp
))
5454 session
= clp
->cl_session
;
5455 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5458 rsize
= server
->rsize
;
5460 rsize
= NFS_MAX_FILE_IO_SIZE
;
5461 wsize
= server
->wsize
;
5463 wsize
= NFS_MAX_FILE_IO_SIZE
;
5465 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5466 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5468 ret
= nfs4_recover_expired_lease(server
);
5470 ret
= nfs4_check_client_ready(clp
);
5474 int nfs4_init_ds_session(struct nfs_client
*clp
)
5476 struct nfs4_session
*session
= clp
->cl_session
;
5479 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5482 ret
= nfs4_client_recover_expired_lease(clp
);
5484 /* Test for the DS role */
5485 if (!is_ds_client(clp
))
5488 ret
= nfs4_check_client_ready(clp
);
5492 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5496 * Renew the cl_session lease.
5498 struct nfs4_sequence_data
{
5499 struct nfs_client
*clp
;
5500 struct nfs4_sequence_args args
;
5501 struct nfs4_sequence_res res
;
5504 static void nfs41_sequence_release(void *data
)
5506 struct nfs4_sequence_data
*calldata
= data
;
5507 struct nfs_client
*clp
= calldata
->clp
;
5509 if (atomic_read(&clp
->cl_count
) > 1)
5510 nfs4_schedule_state_renewal(clp
);
5511 nfs_put_client(clp
);
5515 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5517 switch(task
->tk_status
) {
5518 case -NFS4ERR_DELAY
:
5519 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5522 nfs4_schedule_lease_recovery(clp
);
5527 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5529 struct nfs4_sequence_data
*calldata
= data
;
5530 struct nfs_client
*clp
= calldata
->clp
;
5532 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5535 if (task
->tk_status
< 0) {
5536 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5537 if (atomic_read(&clp
->cl_count
) == 1)
5540 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5541 rpc_restart_call_prepare(task
);
5545 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5547 dprintk("<-- %s\n", __func__
);
5550 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5552 struct nfs4_sequence_data
*calldata
= data
;
5553 struct nfs_client
*clp
= calldata
->clp
;
5554 struct nfs4_sequence_args
*args
;
5555 struct nfs4_sequence_res
*res
;
5557 args
= task
->tk_msg
.rpc_argp
;
5558 res
= task
->tk_msg
.rpc_resp
;
5560 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
))
5562 rpc_call_start(task
);
5565 static const struct rpc_call_ops nfs41_sequence_ops
= {
5566 .rpc_call_done
= nfs41_sequence_call_done
,
5567 .rpc_call_prepare
= nfs41_sequence_prepare
,
5568 .rpc_release
= nfs41_sequence_release
,
5571 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5573 struct nfs4_sequence_data
*calldata
;
5574 struct rpc_message msg
= {
5575 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5578 struct rpc_task_setup task_setup_data
= {
5579 .rpc_client
= clp
->cl_rpcclient
,
5580 .rpc_message
= &msg
,
5581 .callback_ops
= &nfs41_sequence_ops
,
5582 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5585 if (!atomic_inc_not_zero(&clp
->cl_count
))
5586 return ERR_PTR(-EIO
);
5587 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5588 if (calldata
== NULL
) {
5589 nfs_put_client(clp
);
5590 return ERR_PTR(-ENOMEM
);
5592 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
5593 msg
.rpc_argp
= &calldata
->args
;
5594 msg
.rpc_resp
= &calldata
->res
;
5595 calldata
->clp
= clp
;
5596 task_setup_data
.callback_data
= calldata
;
5598 return rpc_run_task(&task_setup_data
);
5601 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
5603 struct rpc_task
*task
;
5606 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
5608 task
= _nfs41_proc_sequence(clp
, cred
);
5610 ret
= PTR_ERR(task
);
5612 rpc_put_task_async(task
);
5613 dprintk("<-- %s status=%d\n", __func__
, ret
);
5617 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5619 struct rpc_task
*task
;
5622 task
= _nfs41_proc_sequence(clp
, cred
);
5624 ret
= PTR_ERR(task
);
5627 ret
= rpc_wait_for_completion_task(task
);
5629 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5631 if (task
->tk_status
== 0)
5632 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5633 ret
= task
->tk_status
;
5637 dprintk("<-- %s status=%d\n", __func__
, ret
);
5641 struct nfs4_reclaim_complete_data
{
5642 struct nfs_client
*clp
;
5643 struct nfs41_reclaim_complete_args arg
;
5644 struct nfs41_reclaim_complete_res res
;
5647 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5649 struct nfs4_reclaim_complete_data
*calldata
= data
;
5651 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5652 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5653 &calldata
->arg
.seq_args
,
5654 &calldata
->res
.seq_res
, task
))
5657 rpc_call_start(task
);
5660 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5662 switch(task
->tk_status
) {
5664 case -NFS4ERR_COMPLETE_ALREADY
:
5665 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5667 case -NFS4ERR_DELAY
:
5668 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5670 case -NFS4ERR_RETRY_UNCACHED_REP
:
5673 nfs4_schedule_lease_recovery(clp
);
5678 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5680 struct nfs4_reclaim_complete_data
*calldata
= data
;
5681 struct nfs_client
*clp
= calldata
->clp
;
5682 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5684 dprintk("--> %s\n", __func__
);
5685 if (!nfs41_sequence_done(task
, res
))
5688 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5689 rpc_restart_call_prepare(task
);
5692 dprintk("<-- %s\n", __func__
);
5695 static void nfs4_free_reclaim_complete_data(void *data
)
5697 struct nfs4_reclaim_complete_data
*calldata
= data
;
5702 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5703 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5704 .rpc_call_done
= nfs4_reclaim_complete_done
,
5705 .rpc_release
= nfs4_free_reclaim_complete_data
,
5709 * Issue a global reclaim complete.
5711 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5713 struct nfs4_reclaim_complete_data
*calldata
;
5714 struct rpc_task
*task
;
5715 struct rpc_message msg
= {
5716 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5718 struct rpc_task_setup task_setup_data
= {
5719 .rpc_client
= clp
->cl_rpcclient
,
5720 .rpc_message
= &msg
,
5721 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5722 .flags
= RPC_TASK_ASYNC
,
5724 int status
= -ENOMEM
;
5726 dprintk("--> %s\n", __func__
);
5727 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5728 if (calldata
== NULL
)
5730 calldata
->clp
= clp
;
5731 calldata
->arg
.one_fs
= 0;
5733 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
5734 msg
.rpc_argp
= &calldata
->arg
;
5735 msg
.rpc_resp
= &calldata
->res
;
5736 task_setup_data
.callback_data
= calldata
;
5737 task
= rpc_run_task(&task_setup_data
);
5739 status
= PTR_ERR(task
);
5742 status
= nfs4_wait_for_completion_rpc_task(task
);
5744 status
= task
->tk_status
;
5748 dprintk("<-- %s status=%d\n", __func__
, status
);
5753 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
5755 struct nfs4_layoutget
*lgp
= calldata
;
5756 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5758 dprintk("--> %s\n", __func__
);
5759 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
5760 * right now covering the LAYOUTGET we are about to send.
5761 * However, that is not so catastrophic, and there seems
5762 * to be no way to prevent it completely.
5764 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
5765 &lgp
->res
.seq_res
, task
))
5767 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
5768 NFS_I(lgp
->args
.inode
)->layout
,
5769 lgp
->args
.ctx
->state
)) {
5770 rpc_exit(task
, NFS4_OK
);
5773 rpc_call_start(task
);
5776 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
5778 struct nfs4_layoutget
*lgp
= calldata
;
5779 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5781 dprintk("--> %s\n", __func__
);
5783 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
5786 switch (task
->tk_status
) {
5789 case -NFS4ERR_LAYOUTTRYLATER
:
5790 case -NFS4ERR_RECALLCONFLICT
:
5791 task
->tk_status
= -NFS4ERR_DELAY
;
5794 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5795 rpc_restart_call_prepare(task
);
5799 dprintk("<-- %s\n", __func__
);
5802 static void nfs4_layoutget_release(void *calldata
)
5804 struct nfs4_layoutget
*lgp
= calldata
;
5806 dprintk("--> %s\n", __func__
);
5807 put_nfs_open_context(lgp
->args
.ctx
);
5809 dprintk("<-- %s\n", __func__
);
5812 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
5813 .rpc_call_prepare
= nfs4_layoutget_prepare
,
5814 .rpc_call_done
= nfs4_layoutget_done
,
5815 .rpc_release
= nfs4_layoutget_release
,
5818 int nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
)
5820 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5821 struct rpc_task
*task
;
5822 struct rpc_message msg
= {
5823 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
5824 .rpc_argp
= &lgp
->args
,
5825 .rpc_resp
= &lgp
->res
,
5827 struct rpc_task_setup task_setup_data
= {
5828 .rpc_client
= server
->client
,
5829 .rpc_message
= &msg
,
5830 .callback_ops
= &nfs4_layoutget_call_ops
,
5831 .callback_data
= lgp
,
5832 .flags
= RPC_TASK_ASYNC
,
5836 dprintk("--> %s\n", __func__
);
5838 lgp
->res
.layoutp
= &lgp
->args
.layout
;
5839 lgp
->res
.seq_res
.sr_slot
= NULL
;
5840 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
5841 task
= rpc_run_task(&task_setup_data
);
5843 return PTR_ERR(task
);
5844 status
= nfs4_wait_for_completion_rpc_task(task
);
5846 status
= task
->tk_status
;
5848 status
= pnfs_layout_process(lgp
);
5850 dprintk("<-- %s status=%d\n", __func__
, status
);
5855 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
5857 struct nfs4_layoutreturn
*lrp
= calldata
;
5859 dprintk("--> %s\n", __func__
);
5860 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
5861 &lrp
->res
.seq_res
, task
))
5863 rpc_call_start(task
);
5866 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
5868 struct nfs4_layoutreturn
*lrp
= calldata
;
5869 struct nfs_server
*server
;
5870 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
5872 dprintk("--> %s\n", __func__
);
5874 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
5877 server
= NFS_SERVER(lrp
->args
.inode
);
5878 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5879 rpc_restart_call_prepare(task
);
5882 spin_lock(&lo
->plh_inode
->i_lock
);
5883 if (task
->tk_status
== 0) {
5884 if (lrp
->res
.lrs_present
) {
5885 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
5887 BUG_ON(!list_empty(&lo
->plh_segs
));
5889 lo
->plh_block_lgets
--;
5890 spin_unlock(&lo
->plh_inode
->i_lock
);
5891 dprintk("<-- %s\n", __func__
);
5894 static void nfs4_layoutreturn_release(void *calldata
)
5896 struct nfs4_layoutreturn
*lrp
= calldata
;
5898 dprintk("--> %s\n", __func__
);
5899 put_layout_hdr(lrp
->args
.layout
);
5901 dprintk("<-- %s\n", __func__
);
5904 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
5905 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
5906 .rpc_call_done
= nfs4_layoutreturn_done
,
5907 .rpc_release
= nfs4_layoutreturn_release
,
5910 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
5912 struct rpc_task
*task
;
5913 struct rpc_message msg
= {
5914 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
5915 .rpc_argp
= &lrp
->args
,
5916 .rpc_resp
= &lrp
->res
,
5918 struct rpc_task_setup task_setup_data
= {
5919 .rpc_client
= lrp
->clp
->cl_rpcclient
,
5920 .rpc_message
= &msg
,
5921 .callback_ops
= &nfs4_layoutreturn_call_ops
,
5922 .callback_data
= lrp
,
5926 dprintk("--> %s\n", __func__
);
5927 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
5928 task
= rpc_run_task(&task_setup_data
);
5930 return PTR_ERR(task
);
5931 status
= task
->tk_status
;
5932 dprintk("<-- %s status=%d\n", __func__
, status
);
5938 * Retrieve the list of Data Server devices from the MDS.
5940 static int _nfs4_getdevicelist(struct nfs_server
*server
,
5941 const struct nfs_fh
*fh
,
5942 struct pnfs_devicelist
*devlist
)
5944 struct nfs4_getdevicelist_args args
= {
5946 .layoutclass
= server
->pnfs_curr_ld
->id
,
5948 struct nfs4_getdevicelist_res res
= {
5951 struct rpc_message msg
= {
5952 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
5958 dprintk("--> %s\n", __func__
);
5959 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
5961 dprintk("<-- %s status=%d\n", __func__
, status
);
5965 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
5966 const struct nfs_fh
*fh
,
5967 struct pnfs_devicelist
*devlist
)
5969 struct nfs4_exception exception
= { };
5973 err
= nfs4_handle_exception(server
,
5974 _nfs4_getdevicelist(server
, fh
, devlist
),
5976 } while (exception
.retry
);
5978 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
5979 err
, devlist
->num_devs
);
5983 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
5986 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
5988 struct nfs4_getdeviceinfo_args args
= {
5991 struct nfs4_getdeviceinfo_res res
= {
5994 struct rpc_message msg
= {
5995 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6001 dprintk("--> %s\n", __func__
);
6002 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6003 dprintk("<-- %s status=%d\n", __func__
, status
);
6008 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6010 struct nfs4_exception exception
= { };
6014 err
= nfs4_handle_exception(server
,
6015 _nfs4_proc_getdeviceinfo(server
, pdev
),
6017 } while (exception
.retry
);
6020 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6022 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6024 struct nfs4_layoutcommit_data
*data
= calldata
;
6025 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6027 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
6028 &data
->res
.seq_res
, task
))
6030 rpc_call_start(task
);
6034 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6036 struct nfs4_layoutcommit_data
*data
= calldata
;
6037 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6039 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6042 switch (task
->tk_status
) { /* Just ignore these failures */
6043 case NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6044 case NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6045 case NFS4ERR_BADLAYOUT
: /* no layout */
6046 case NFS4ERR_GRACE
: /* loca_recalim always false */
6047 task
->tk_status
= 0;
6050 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6051 rpc_restart_call_prepare(task
);
6055 if (task
->tk_status
== 0)
6056 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6060 static void nfs4_layoutcommit_release(void *calldata
)
6062 struct nfs4_layoutcommit_data
*data
= calldata
;
6063 struct pnfs_layout_segment
*lseg
, *tmp
;
6064 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
6066 pnfs_cleanup_layoutcommit(data
);
6067 /* Matched by references in pnfs_set_layoutcommit */
6068 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
6069 list_del_init(&lseg
->pls_lc_list
);
6070 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
6075 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
6076 smp_mb__after_clear_bit();
6077 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
6079 put_rpccred(data
->cred
);
6083 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6084 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6085 .rpc_call_done
= nfs4_layoutcommit_done
,
6086 .rpc_release
= nfs4_layoutcommit_release
,
6090 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6092 struct rpc_message msg
= {
6093 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6094 .rpc_argp
= &data
->args
,
6095 .rpc_resp
= &data
->res
,
6096 .rpc_cred
= data
->cred
,
6098 struct rpc_task_setup task_setup_data
= {
6099 .task
= &data
->task
,
6100 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6101 .rpc_message
= &msg
,
6102 .callback_ops
= &nfs4_layoutcommit_ops
,
6103 .callback_data
= data
,
6104 .flags
= RPC_TASK_ASYNC
,
6106 struct rpc_task
*task
;
6109 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6110 "lbw: %llu inode %lu\n",
6111 data
->task
.tk_pid
, sync
,
6112 data
->args
.lastbytewritten
,
6113 data
->args
.inode
->i_ino
);
6115 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6116 task
= rpc_run_task(&task_setup_data
);
6118 return PTR_ERR(task
);
6121 status
= nfs4_wait_for_completion_rpc_task(task
);
6124 status
= task
->tk_status
;
6126 dprintk("%s: status %d\n", __func__
, status
);
6132 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6133 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6135 struct nfs41_secinfo_no_name_args args
= {
6136 .style
= SECINFO_STYLE_CURRENT_FH
,
6138 struct nfs4_secinfo_res res
= {
6141 struct rpc_message msg
= {
6142 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6146 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6150 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6151 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6153 struct nfs4_exception exception
= { };
6156 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6159 case -NFS4ERR_WRONGSEC
:
6160 case -NFS4ERR_NOTSUPP
:
6163 err
= nfs4_handle_exception(server
, err
, &exception
);
6165 } while (exception
.retry
);
6170 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6171 struct nfs_fsinfo
*info
)
6175 rpc_authflavor_t flavor
;
6176 struct nfs4_secinfo_flavors
*flavors
;
6178 page
= alloc_page(GFP_KERNEL
);
6184 flavors
= page_address(page
);
6185 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6188 * Fall back on "guess and check" method if
6189 * the server doesn't support SECINFO_NO_NAME
6191 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6192 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6198 flavor
= nfs_find_best_sec(flavors
);
6200 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6210 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6213 struct nfs41_test_stateid_args args
= {
6216 struct nfs41_test_stateid_res res
;
6217 struct rpc_message msg
= {
6218 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6223 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6224 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6226 if (status
== NFS_OK
)
6231 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6233 struct nfs4_exception exception
= { };
6236 err
= nfs4_handle_exception(server
,
6237 _nfs41_test_stateid(server
, stateid
),
6239 } while (exception
.retry
);
6243 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6245 struct nfs41_free_stateid_args args
= {
6248 struct nfs41_free_stateid_res res
;
6249 struct rpc_message msg
= {
6250 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6255 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6256 return nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6259 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6261 struct nfs4_exception exception
= { };
6264 err
= nfs4_handle_exception(server
,
6265 _nfs4_free_stateid(server
, stateid
),
6267 } while (exception
.retry
);
6271 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6272 const nfs4_stateid
*s2
)
6274 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6277 if (s1
->seqid
== s2
->seqid
)
6279 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6285 #endif /* CONFIG_NFS_V4_1 */
6287 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6288 const nfs4_stateid
*s2
)
6290 return nfs4_stateid_match(s1
, s2
);
6294 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6295 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6296 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6297 .recover_open
= nfs4_open_reclaim
,
6298 .recover_lock
= nfs4_lock_reclaim
,
6299 .establish_clid
= nfs4_init_clientid
,
6300 .get_clid_cred
= nfs4_get_setclientid_cred
,
6303 #if defined(CONFIG_NFS_V4_1)
6304 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6305 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6306 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6307 .recover_open
= nfs4_open_reclaim
,
6308 .recover_lock
= nfs4_lock_reclaim
,
6309 .establish_clid
= nfs41_init_clientid
,
6310 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6311 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6313 #endif /* CONFIG_NFS_V4_1 */
6315 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6316 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6317 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6318 .recover_open
= nfs4_open_expired
,
6319 .recover_lock
= nfs4_lock_expired
,
6320 .establish_clid
= nfs4_init_clientid
,
6321 .get_clid_cred
= nfs4_get_setclientid_cred
,
6324 #if defined(CONFIG_NFS_V4_1)
6325 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6326 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6327 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6328 .recover_open
= nfs41_open_expired
,
6329 .recover_lock
= nfs41_lock_expired
,
6330 .establish_clid
= nfs41_init_clientid
,
6331 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6333 #endif /* CONFIG_NFS_V4_1 */
6335 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6336 .sched_state_renewal
= nfs4_proc_async_renew
,
6337 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6338 .renew_lease
= nfs4_proc_renew
,
6341 #if defined(CONFIG_NFS_V4_1)
6342 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6343 .sched_state_renewal
= nfs41_proc_async_sequence
,
6344 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6345 .renew_lease
= nfs4_proc_sequence
,
6349 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6351 .call_sync
= _nfs4_call_sync
,
6352 .match_stateid
= nfs4_match_stateid
,
6353 .find_root_sec
= nfs4_find_root_sec
,
6354 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6355 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6356 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6359 #if defined(CONFIG_NFS_V4_1)
6360 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6362 .call_sync
= _nfs4_call_sync_session
,
6363 .match_stateid
= nfs41_match_stateid
,
6364 .find_root_sec
= nfs41_find_root_sec
,
6365 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6366 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6367 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6371 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6372 [0] = &nfs_v4_0_minor_ops
,
6373 #if defined(CONFIG_NFS_V4_1)
6374 [1] = &nfs_v4_1_minor_ops
,
6378 static const struct inode_operations nfs4_file_inode_operations
= {
6379 .permission
= nfs_permission
,
6380 .getattr
= nfs_getattr
,
6381 .setattr
= nfs_setattr
,
6382 .getxattr
= generic_getxattr
,
6383 .setxattr
= generic_setxattr
,
6384 .listxattr
= generic_listxattr
,
6385 .removexattr
= generic_removexattr
,
6388 const struct nfs_rpc_ops nfs_v4_clientops
= {
6389 .version
= 4, /* protocol version */
6390 .dentry_ops
= &nfs4_dentry_operations
,
6391 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6392 .file_inode_ops
= &nfs4_file_inode_operations
,
6393 .file_ops
= &nfs4_file_operations
,
6394 .getroot
= nfs4_proc_get_root
,
6395 .getattr
= nfs4_proc_getattr
,
6396 .setattr
= nfs4_proc_setattr
,
6397 .lookup
= nfs4_proc_lookup
,
6398 .access
= nfs4_proc_access
,
6399 .readlink
= nfs4_proc_readlink
,
6400 .create
= nfs4_proc_create
,
6401 .remove
= nfs4_proc_remove
,
6402 .unlink_setup
= nfs4_proc_unlink_setup
,
6403 .unlink_done
= nfs4_proc_unlink_done
,
6404 .rename
= nfs4_proc_rename
,
6405 .rename_setup
= nfs4_proc_rename_setup
,
6406 .rename_done
= nfs4_proc_rename_done
,
6407 .link
= nfs4_proc_link
,
6408 .symlink
= nfs4_proc_symlink
,
6409 .mkdir
= nfs4_proc_mkdir
,
6410 .rmdir
= nfs4_proc_remove
,
6411 .readdir
= nfs4_proc_readdir
,
6412 .mknod
= nfs4_proc_mknod
,
6413 .statfs
= nfs4_proc_statfs
,
6414 .fsinfo
= nfs4_proc_fsinfo
,
6415 .pathconf
= nfs4_proc_pathconf
,
6416 .set_capabilities
= nfs4_server_capabilities
,
6417 .decode_dirent
= nfs4_decode_dirent
,
6418 .read_setup
= nfs4_proc_read_setup
,
6419 .read_done
= nfs4_read_done
,
6420 .write_setup
= nfs4_proc_write_setup
,
6421 .write_done
= nfs4_write_done
,
6422 .commit_setup
= nfs4_proc_commit_setup
,
6423 .commit_done
= nfs4_commit_done
,
6424 .lock
= nfs4_proc_lock
,
6425 .clear_acl_cache
= nfs4_zap_acl_attr
,
6426 .close_context
= nfs4_close_context
,
6427 .open_context
= nfs4_atomic_open
,
6428 .init_client
= nfs4_init_client
,
6429 .secinfo
= nfs4_proc_secinfo
,
6432 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6433 .prefix
= XATTR_NAME_NFSV4_ACL
,
6434 .list
= nfs4_xattr_list_nfs4_acl
,
6435 .get
= nfs4_xattr_get_nfs4_acl
,
6436 .set
= nfs4_xattr_set_nfs4_acl
,
6439 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6440 &nfs4_xattr_nfs4_acl_handler
,
6444 module_param(max_session_slots
, ushort
, 0644);
6445 MODULE_PARM_DESC(max_session_slots
, "Maximum number of outstanding NFSv4.1 "
6446 "requests the client will negotiate");