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/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/nfs_idmap.h>
55 #include <linux/sunrpc/bc_xprt.h>
56 #include <linux/xattr.h>
57 #include <linux/utsname.h>
58 #include <linux/freezer.h>
61 #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)
76 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
77 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
78 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
79 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
80 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
81 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*);
82 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
83 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
84 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
85 struct nfs4_state
*state
);
86 #ifdef CONFIG_NFS_V4_1
87 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*);
88 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*);
90 /* Prevent leaks of NFSv4 errors into userland */
91 static int nfs4_map_errors(int err
)
96 case -NFS4ERR_RESOURCE
:
98 case -NFS4ERR_WRONGSEC
:
100 case -NFS4ERR_BADOWNER
:
101 case -NFS4ERR_BADNAME
:
103 case -NFS4ERR_SHARE_DENIED
:
105 case -NFS4ERR_MINOR_VERS_MISMATCH
:
106 return -EPROTONOSUPPORT
;
107 case -NFS4ERR_ACCESS
:
110 dprintk("%s could not handle NFSv4 error %d\n",
118 * This is our standard bitmap for GETATTR requests.
120 const u32 nfs4_fattr_bitmap
[3] = {
122 | FATTR4_WORD0_CHANGE
125 | FATTR4_WORD0_FILEID
,
127 | FATTR4_WORD1_NUMLINKS
129 | FATTR4_WORD1_OWNER_GROUP
130 | FATTR4_WORD1_RAWDEV
131 | FATTR4_WORD1_SPACE_USED
132 | FATTR4_WORD1_TIME_ACCESS
133 | FATTR4_WORD1_TIME_METADATA
134 | FATTR4_WORD1_TIME_MODIFY
137 static const u32 nfs4_pnfs_open_bitmap
[3] = {
139 | FATTR4_WORD0_CHANGE
142 | FATTR4_WORD0_FILEID
,
144 | FATTR4_WORD1_NUMLINKS
146 | FATTR4_WORD1_OWNER_GROUP
147 | FATTR4_WORD1_RAWDEV
148 | FATTR4_WORD1_SPACE_USED
149 | FATTR4_WORD1_TIME_ACCESS
150 | FATTR4_WORD1_TIME_METADATA
151 | FATTR4_WORD1_TIME_MODIFY
,
152 FATTR4_WORD2_MDSTHRESHOLD
155 static const u32 nfs4_open_noattr_bitmap
[3] = {
157 | FATTR4_WORD0_CHANGE
158 | FATTR4_WORD0_FILEID
,
161 const u32 nfs4_statfs_bitmap
[2] = {
162 FATTR4_WORD0_FILES_AVAIL
163 | FATTR4_WORD0_FILES_FREE
164 | FATTR4_WORD0_FILES_TOTAL
,
165 FATTR4_WORD1_SPACE_AVAIL
166 | FATTR4_WORD1_SPACE_FREE
167 | FATTR4_WORD1_SPACE_TOTAL
170 const u32 nfs4_pathconf_bitmap
[2] = {
172 | FATTR4_WORD0_MAXNAME
,
176 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
177 | FATTR4_WORD0_MAXREAD
178 | FATTR4_WORD0_MAXWRITE
179 | FATTR4_WORD0_LEASE_TIME
,
180 FATTR4_WORD1_TIME_DELTA
181 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
182 FATTR4_WORD2_LAYOUT_BLKSIZE
185 const u32 nfs4_fs_locations_bitmap
[2] = {
187 | FATTR4_WORD0_CHANGE
190 | FATTR4_WORD0_FILEID
191 | FATTR4_WORD0_FS_LOCATIONS
,
193 | FATTR4_WORD1_NUMLINKS
195 | FATTR4_WORD1_OWNER_GROUP
196 | FATTR4_WORD1_RAWDEV
197 | FATTR4_WORD1_SPACE_USED
198 | FATTR4_WORD1_TIME_ACCESS
199 | FATTR4_WORD1_TIME_METADATA
200 | FATTR4_WORD1_TIME_MODIFY
201 | FATTR4_WORD1_MOUNTED_ON_FILEID
204 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
205 struct nfs4_readdir_arg
*readdir
)
210 readdir
->cookie
= cookie
;
211 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
216 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
221 * NFSv4 servers do not return entries for '.' and '..'
222 * Therefore, we fake these entries here. We let '.'
223 * have cookie 0 and '..' have cookie 1. Note that
224 * when talking to the server, we always send cookie 0
227 start
= p
= kmap_atomic(*readdir
->pages
);
230 *p
++ = xdr_one
; /* next */
231 *p
++ = xdr_zero
; /* cookie, first word */
232 *p
++ = xdr_one
; /* cookie, second word */
233 *p
++ = xdr_one
; /* entry len */
234 memcpy(p
, ".\0\0\0", 4); /* entry */
236 *p
++ = xdr_one
; /* bitmap length */
237 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
238 *p
++ = htonl(8); /* attribute buffer length */
239 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
242 *p
++ = xdr_one
; /* next */
243 *p
++ = xdr_zero
; /* cookie, first word */
244 *p
++ = xdr_two
; /* cookie, second word */
245 *p
++ = xdr_two
; /* entry len */
246 memcpy(p
, "..\0\0", 4); /* entry */
248 *p
++ = xdr_one
; /* bitmap length */
249 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
250 *p
++ = htonl(8); /* attribute buffer length */
251 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
253 readdir
->pgbase
= (char *)p
- (char *)start
;
254 readdir
->count
-= readdir
->pgbase
;
255 kunmap_atomic(start
);
258 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
264 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
265 nfs_wait_bit_killable
, TASK_KILLABLE
);
269 if (clp
->cl_cons_state
< 0)
270 return clp
->cl_cons_state
;
274 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
281 *timeout
= NFS4_POLL_RETRY_MIN
;
282 if (*timeout
> NFS4_POLL_RETRY_MAX
)
283 *timeout
= NFS4_POLL_RETRY_MAX
;
284 freezable_schedule_timeout_killable(*timeout
);
285 if (fatal_signal_pending(current
))
291 /* This is the error handling routine for processes that are allowed
294 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
296 struct nfs_client
*clp
= server
->nfs_client
;
297 struct nfs4_state
*state
= exception
->state
;
298 struct inode
*inode
= exception
->inode
;
301 exception
->retry
= 0;
305 case -NFS4ERR_OPENMODE
:
306 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
307 nfs4_inode_return_delegation(inode
);
308 exception
->retry
= 1;
313 nfs4_schedule_stateid_recovery(server
, state
);
314 goto wait_on_recovery
;
315 case -NFS4ERR_DELEG_REVOKED
:
316 case -NFS4ERR_ADMIN_REVOKED
:
317 case -NFS4ERR_BAD_STATEID
:
320 nfs_remove_bad_delegation(state
->inode
);
321 nfs4_schedule_stateid_recovery(server
, state
);
322 goto wait_on_recovery
;
323 case -NFS4ERR_EXPIRED
:
325 nfs4_schedule_stateid_recovery(server
, state
);
326 case -NFS4ERR_STALE_STATEID
:
327 case -NFS4ERR_STALE_CLIENTID
:
328 nfs4_schedule_lease_recovery(clp
);
329 goto wait_on_recovery
;
330 #if defined(CONFIG_NFS_V4_1)
331 case -NFS4ERR_BADSESSION
:
332 case -NFS4ERR_BADSLOT
:
333 case -NFS4ERR_BAD_HIGH_SLOT
:
334 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
335 case -NFS4ERR_DEADSESSION
:
336 case -NFS4ERR_SEQ_FALSE_RETRY
:
337 case -NFS4ERR_SEQ_MISORDERED
:
338 dprintk("%s ERROR: %d Reset session\n", __func__
,
340 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
341 goto wait_on_recovery
;
342 #endif /* defined(CONFIG_NFS_V4_1) */
343 case -NFS4ERR_FILE_OPEN
:
344 if (exception
->timeout
> HZ
) {
345 /* We have retried a decent amount, time to
354 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
357 case -NFS4ERR_RETRY_UNCACHED_REP
:
358 case -NFS4ERR_OLD_STATEID
:
359 exception
->retry
= 1;
361 case -NFS4ERR_BADOWNER
:
362 /* The following works around a Linux server bug! */
363 case -NFS4ERR_BADNAME
:
364 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
365 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
366 exception
->retry
= 1;
367 printk(KERN_WARNING
"NFS: v4 server %s "
368 "does not accept raw "
370 "Reenabling the idmapper.\n",
371 server
->nfs_client
->cl_hostname
);
374 /* We failed to handle the error */
375 return nfs4_map_errors(ret
);
377 ret
= nfs4_wait_clnt_recover(clp
);
379 exception
->retry
= 1;
384 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
386 spin_lock(&clp
->cl_lock
);
387 if (time_before(clp
->cl_last_renewal
,timestamp
))
388 clp
->cl_last_renewal
= timestamp
;
389 spin_unlock(&clp
->cl_lock
);
392 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
394 do_renew_lease(server
->nfs_client
, timestamp
);
397 #if defined(CONFIG_NFS_V4_1)
400 * nfs4_free_slot - free a slot and efficiently update slot table.
402 * freeing a slot is trivially done by clearing its respective bit
404 * If the freed slotid equals highest_used_slotid we want to update it
405 * so that the server would be able to size down the slot table if needed,
406 * otherwise we know that the highest_used_slotid is still in use.
407 * When updating highest_used_slotid there may be "holes" in the bitmap
408 * so we need to scan down from highest_used_slotid to 0 looking for the now
409 * highest slotid in use.
410 * If none found, highest_used_slotid is set to NFS4_NO_SLOT.
412 * Must be called while holding tbl->slot_tbl_lock
415 nfs4_free_slot(struct nfs4_slot_table
*tbl
, struct nfs4_slot
*slot
)
417 u32 slotid
= slot
->slot_nr
;
419 /* clear used bit in bitmap */
420 __clear_bit(slotid
, tbl
->used_slots
);
422 /* update highest_used_slotid when it is freed */
423 if (slotid
== tbl
->highest_used_slotid
) {
424 u32 new_max
= find_last_bit(tbl
->used_slots
, slotid
);
425 if (new_max
< slotid
)
426 tbl
->highest_used_slotid
= new_max
;
428 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
430 dprintk("%s: slotid %u highest_used_slotid %d\n", __func__
,
431 slotid
, tbl
->highest_used_slotid
);
434 bool nfs4_set_task_privileged(struct rpc_task
*task
, void *dummy
)
436 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
441 * Signal state manager thread if session fore channel is drained
443 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
445 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
446 rpc_wake_up_first(&ses
->fc_slot_table
.slot_tbl_waitq
,
447 nfs4_set_task_privileged
, NULL
);
451 if (ses
->fc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
454 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
455 complete(&ses
->fc_slot_table
.complete
);
459 * Signal state manager thread if session back channel is drained
461 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
463 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
464 ses
->bc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
466 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
467 complete(&ses
->bc_slot_table
.complete
);
470 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
472 struct nfs4_session
*session
;
473 struct nfs4_slot_table
*tbl
;
476 /* just wake up the next guy waiting since
477 * we may have not consumed a slot after all */
478 dprintk("%s: No slot\n", __func__
);
481 tbl
= res
->sr_slot
->table
;
482 session
= tbl
->session
;
484 spin_lock(&tbl
->slot_tbl_lock
);
485 nfs4_free_slot(tbl
, res
->sr_slot
);
486 nfs4_check_drain_fc_complete(session
);
487 spin_unlock(&tbl
->slot_tbl_lock
);
491 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
493 struct nfs4_session
*session
;
494 struct nfs4_slot
*slot
;
495 unsigned long timestamp
;
496 struct nfs_client
*clp
;
499 * sr_status remains 1 if an RPC level error occurred. The server
500 * may or may not have processed the sequence operation..
501 * Proceed as if the server received and processed the sequence
504 if (res
->sr_status
== 1)
505 res
->sr_status
= NFS_OK
;
507 /* don't increment the sequence number if the task wasn't sent */
508 if (!RPC_WAS_SENT(task
))
512 session
= slot
->table
->session
;
514 /* Check the SEQUENCE operation status */
515 switch (res
->sr_status
) {
517 /* Update the slot's sequence and clientid lease timer */
519 timestamp
= slot
->renewal_time
;
521 do_renew_lease(clp
, timestamp
);
522 /* Check sequence flags */
523 if (res
->sr_status_flags
!= 0)
524 nfs4_schedule_lease_recovery(clp
);
527 /* The server detected a resend of the RPC call and
528 * returned NFS4ERR_DELAY as per Section 2.10.6.2
531 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
537 /* Just update the slot sequence no. */
541 /* The session may be reset by one of the error handlers. */
542 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
543 nfs41_sequence_free_slot(res
);
546 if (!rpc_restart_call(task
))
548 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
552 static int nfs4_sequence_done(struct rpc_task
*task
,
553 struct nfs4_sequence_res
*res
)
555 if (res
->sr_slot
== NULL
)
557 return nfs41_sequence_done(task
, res
);
561 * nfs4_alloc_slot - efficiently look for a free slot
563 * nfs4_alloc_slot looks for an unset bit in the used_slots bitmap.
564 * If found, we mark the slot as used, update the highest_used_slotid,
565 * and respectively set up the sequence operation args.
567 * Note: must be called with under the slot_tbl_lock.
569 static struct nfs4_slot
*nfs4_alloc_slot(struct nfs4_slot_table
*tbl
)
571 struct nfs4_slot
*ret
= NULL
;
574 dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n",
575 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
577 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
578 if (slotid
>= tbl
->max_slots
)
580 __set_bit(slotid
, tbl
->used_slots
);
581 if (slotid
> tbl
->highest_used_slotid
||
582 tbl
->highest_used_slotid
== NFS4_NO_SLOT
)
583 tbl
->highest_used_slotid
= slotid
;
584 ret
= &tbl
->slots
[slotid
];
585 ret
->renewal_time
= jiffies
;
588 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
589 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
590 ret
? ret
->slot_nr
: -1);
594 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
595 struct nfs4_sequence_res
*res
, int cache_reply
)
597 args
->sa_slot
= NULL
;
598 args
->sa_cache_this
= 0;
600 args
->sa_cache_this
= 1;
604 int nfs41_setup_sequence(struct nfs4_session
*session
,
605 struct nfs4_sequence_args
*args
,
606 struct nfs4_sequence_res
*res
,
607 struct rpc_task
*task
)
609 struct nfs4_slot
*slot
;
610 struct nfs4_slot_table
*tbl
;
612 dprintk("--> %s\n", __func__
);
613 /* slot already allocated? */
614 if (res
->sr_slot
!= NULL
)
617 tbl
= &session
->fc_slot_table
;
619 spin_lock(&tbl
->slot_tbl_lock
);
620 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
621 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
622 /* The state manager will wait until the slot table is empty */
623 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
624 spin_unlock(&tbl
->slot_tbl_lock
);
625 dprintk("%s session is draining\n", __func__
);
629 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
630 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
631 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
632 spin_unlock(&tbl
->slot_tbl_lock
);
633 dprintk("%s enforce FIFO order\n", __func__
);
637 slot
= nfs4_alloc_slot(tbl
);
639 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
640 spin_unlock(&tbl
->slot_tbl_lock
);
641 dprintk("<-- %s: no free slots\n", __func__
);
644 spin_unlock(&tbl
->slot_tbl_lock
);
646 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
648 args
->sa_slot
= slot
;
650 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
,
651 slot
->slot_nr
, slot
->seq_nr
);
654 res
->sr_status_flags
= 0;
656 * sr_status is only set in decode_sequence, and so will remain
657 * set to 1 if an rpc level failure occurs.
662 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
664 int nfs4_setup_sequence(const struct nfs_server
*server
,
665 struct nfs4_sequence_args
*args
,
666 struct nfs4_sequence_res
*res
,
667 struct rpc_task
*task
)
669 struct nfs4_session
*session
= nfs4_get_session(server
);
675 dprintk("--> %s clp %p session %p sr_slot %d\n",
676 __func__
, session
->clp
, session
, res
->sr_slot
?
677 res
->sr_slot
->slot_nr
: -1);
679 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
681 dprintk("<-- %s status=%d\n", __func__
, ret
);
685 struct nfs41_call_sync_data
{
686 const struct nfs_server
*seq_server
;
687 struct nfs4_sequence_args
*seq_args
;
688 struct nfs4_sequence_res
*seq_res
;
691 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
693 struct nfs41_call_sync_data
*data
= calldata
;
695 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
697 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
698 data
->seq_res
, task
))
700 rpc_call_start(task
);
703 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
705 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
706 nfs41_call_sync_prepare(task
, calldata
);
709 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
711 struct nfs41_call_sync_data
*data
= calldata
;
713 nfs41_sequence_done(task
, data
->seq_res
);
716 static const struct rpc_call_ops nfs41_call_sync_ops
= {
717 .rpc_call_prepare
= nfs41_call_sync_prepare
,
718 .rpc_call_done
= nfs41_call_sync_done
,
721 static const struct rpc_call_ops nfs41_call_priv_sync_ops
= {
722 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
723 .rpc_call_done
= nfs41_call_sync_done
,
726 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
727 struct nfs_server
*server
,
728 struct rpc_message
*msg
,
729 struct nfs4_sequence_args
*args
,
730 struct nfs4_sequence_res
*res
,
734 struct rpc_task
*task
;
735 struct nfs41_call_sync_data data
= {
736 .seq_server
= server
,
740 struct rpc_task_setup task_setup
= {
743 .callback_ops
= &nfs41_call_sync_ops
,
744 .callback_data
= &data
748 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
749 task
= rpc_run_task(&task_setup
);
753 ret
= task
->tk_status
;
759 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
760 struct nfs_server
*server
,
761 struct rpc_message
*msg
,
762 struct nfs4_sequence_args
*args
,
763 struct nfs4_sequence_res
*res
,
766 nfs41_init_sequence(args
, res
, cache_reply
);
767 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, 0);
772 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
773 struct nfs4_sequence_res
*res
, int cache_reply
)
777 static int nfs4_sequence_done(struct rpc_task
*task
,
778 struct nfs4_sequence_res
*res
)
782 #endif /* CONFIG_NFS_V4_1 */
784 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
785 struct nfs_server
*server
,
786 struct rpc_message
*msg
,
787 struct nfs4_sequence_args
*args
,
788 struct nfs4_sequence_res
*res
,
791 nfs41_init_sequence(args
, res
, cache_reply
);
792 return rpc_call_sync(clnt
, msg
, 0);
796 int nfs4_call_sync(struct rpc_clnt
*clnt
,
797 struct nfs_server
*server
,
798 struct rpc_message
*msg
,
799 struct nfs4_sequence_args
*args
,
800 struct nfs4_sequence_res
*res
,
803 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
804 args
, res
, cache_reply
);
807 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
809 struct nfs_inode
*nfsi
= NFS_I(dir
);
811 spin_lock(&dir
->i_lock
);
812 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
813 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
814 nfs_force_lookup_revalidate(dir
);
815 dir
->i_version
= cinfo
->after
;
816 spin_unlock(&dir
->i_lock
);
819 struct nfs4_opendata
{
821 struct nfs_openargs o_arg
;
822 struct nfs_openres o_res
;
823 struct nfs_open_confirmargs c_arg
;
824 struct nfs_open_confirmres c_res
;
825 struct nfs4_string owner_name
;
826 struct nfs4_string group_name
;
827 struct nfs_fattr f_attr
;
829 struct dentry
*dentry
;
830 struct nfs4_state_owner
*owner
;
831 struct nfs4_state
*state
;
833 unsigned long timestamp
;
834 unsigned int rpc_done
: 1;
840 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
842 p
->o_res
.f_attr
= &p
->f_attr
;
843 p
->o_res
.seqid
= p
->o_arg
.seqid
;
844 p
->c_res
.seqid
= p
->c_arg
.seqid
;
845 p
->o_res
.server
= p
->o_arg
.server
;
846 p
->o_res
.access_request
= p
->o_arg
.access
;
847 nfs_fattr_init(&p
->f_attr
);
848 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
851 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
852 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
853 const struct iattr
*attrs
,
856 struct dentry
*parent
= dget_parent(dentry
);
857 struct inode
*dir
= parent
->d_inode
;
858 struct nfs_server
*server
= NFS_SERVER(dir
);
859 struct nfs4_opendata
*p
;
861 p
= kzalloc(sizeof(*p
), gfp_mask
);
864 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
865 if (p
->o_arg
.seqid
== NULL
)
867 nfs_sb_active(dentry
->d_sb
);
868 p
->dentry
= dget(dentry
);
871 atomic_inc(&sp
->so_count
);
872 p
->o_arg
.fh
= NFS_FH(dir
);
873 p
->o_arg
.open_flags
= flags
;
874 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
875 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
876 * will return permission denied for all bits until close */
877 if (!(flags
& O_EXCL
)) {
878 /* ask server to check for all possible rights as results
880 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
881 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
883 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
884 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
885 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
886 p
->o_arg
.name
= &dentry
->d_name
;
887 p
->o_arg
.server
= server
;
888 p
->o_arg
.bitmask
= server
->attr_bitmask
;
889 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
890 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
891 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
894 p
->o_arg
.u
.attrs
= &p
->attrs
;
895 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
898 verf
[1] = current
->pid
;
899 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
900 sizeof(p
->o_arg
.u
.verifier
.data
));
902 p
->c_arg
.fh
= &p
->o_res
.fh
;
903 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
904 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
905 nfs4_init_opendata_res(p
);
915 static void nfs4_opendata_free(struct kref
*kref
)
917 struct nfs4_opendata
*p
= container_of(kref
,
918 struct nfs4_opendata
, kref
);
919 struct super_block
*sb
= p
->dentry
->d_sb
;
921 nfs_free_seqid(p
->o_arg
.seqid
);
922 if (p
->state
!= NULL
)
923 nfs4_put_open_state(p
->state
);
924 nfs4_put_state_owner(p
->owner
);
928 nfs_fattr_free_names(&p
->f_attr
);
932 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
935 kref_put(&p
->kref
, nfs4_opendata_free
);
938 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
942 ret
= rpc_wait_for_completion_task(task
);
946 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
950 if (open_mode
& (O_EXCL
|O_TRUNC
))
952 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
954 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
955 && state
->n_rdonly
!= 0;
958 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
959 && state
->n_wronly
!= 0;
961 case FMODE_READ
|FMODE_WRITE
:
962 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
963 && state
->n_rdwr
!= 0;
969 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
971 if (delegation
== NULL
)
973 if ((delegation
->type
& fmode
) != fmode
)
975 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
977 nfs_mark_delegation_referenced(delegation
);
981 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
990 case FMODE_READ
|FMODE_WRITE
:
993 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
996 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
998 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
999 nfs4_stateid_copy(&state
->stateid
, stateid
);
1000 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1003 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1006 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1008 case FMODE_READ
|FMODE_WRITE
:
1009 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1013 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1015 write_seqlock(&state
->seqlock
);
1016 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
1017 write_sequnlock(&state
->seqlock
);
1020 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1023 * Protect the call to nfs4_state_set_mode_locked and
1024 * serialise the stateid update
1026 write_seqlock(&state
->seqlock
);
1027 if (deleg_stateid
!= NULL
) {
1028 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1029 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1031 if (open_stateid
!= NULL
)
1032 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1033 write_sequnlock(&state
->seqlock
);
1034 spin_lock(&state
->owner
->so_lock
);
1035 update_open_stateflags(state
, fmode
);
1036 spin_unlock(&state
->owner
->so_lock
);
1039 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1041 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1042 struct nfs_delegation
*deleg_cur
;
1045 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1048 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1049 if (deleg_cur
== NULL
)
1052 spin_lock(&deleg_cur
->lock
);
1053 if (nfsi
->delegation
!= deleg_cur
||
1054 (deleg_cur
->type
& fmode
) != fmode
)
1055 goto no_delegation_unlock
;
1057 if (delegation
== NULL
)
1058 delegation
= &deleg_cur
->stateid
;
1059 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1060 goto no_delegation_unlock
;
1062 nfs_mark_delegation_referenced(deleg_cur
);
1063 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1065 no_delegation_unlock
:
1066 spin_unlock(&deleg_cur
->lock
);
1070 if (!ret
&& open_stateid
!= NULL
) {
1071 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1079 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1081 struct nfs_delegation
*delegation
;
1084 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1085 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1090 nfs4_inode_return_delegation(inode
);
1093 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1095 struct nfs4_state
*state
= opendata
->state
;
1096 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1097 struct nfs_delegation
*delegation
;
1098 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1099 fmode_t fmode
= opendata
->o_arg
.fmode
;
1100 nfs4_stateid stateid
;
1104 if (can_open_cached(state
, fmode
, open_mode
)) {
1105 spin_lock(&state
->owner
->so_lock
);
1106 if (can_open_cached(state
, fmode
, open_mode
)) {
1107 update_open_stateflags(state
, fmode
);
1108 spin_unlock(&state
->owner
->so_lock
);
1109 goto out_return_state
;
1111 spin_unlock(&state
->owner
->so_lock
);
1114 delegation
= rcu_dereference(nfsi
->delegation
);
1115 if (!can_open_delegated(delegation
, fmode
)) {
1119 /* Save the delegation */
1120 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1122 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1127 /* Try to update the stateid using the delegation */
1128 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1129 goto out_return_state
;
1132 return ERR_PTR(ret
);
1134 atomic_inc(&state
->count
);
1139 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1141 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1142 struct nfs_delegation
*delegation
;
1143 int delegation_flags
= 0;
1146 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1148 delegation_flags
= delegation
->flags
;
1150 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1151 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1152 "returning a delegation for "
1153 "OPEN(CLAIM_DELEGATE_CUR)\n",
1155 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1156 nfs_inode_set_delegation(state
->inode
,
1157 data
->owner
->so_cred
,
1160 nfs_inode_reclaim_delegation(state
->inode
,
1161 data
->owner
->so_cred
,
1166 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1167 * and update the nfs4_state.
1169 static struct nfs4_state
*
1170 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1172 struct inode
*inode
= data
->state
->inode
;
1173 struct nfs4_state
*state
= data
->state
;
1176 if (!data
->rpc_done
) {
1177 ret
= data
->rpc_status
;
1182 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1183 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1184 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1188 state
= nfs4_get_open_state(inode
, data
->owner
);
1192 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1196 if (data
->o_res
.delegation_type
!= 0)
1197 nfs4_opendata_check_deleg(data
, state
);
1198 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1203 return ERR_PTR(ret
);
1207 static struct nfs4_state
*
1208 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1210 struct inode
*inode
;
1211 struct nfs4_state
*state
= NULL
;
1214 if (!data
->rpc_done
) {
1215 state
= nfs4_try_open_cached(data
);
1220 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1222 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1223 ret
= PTR_ERR(inode
);
1227 state
= nfs4_get_open_state(inode
, data
->owner
);
1230 if (data
->o_res
.delegation_type
!= 0)
1231 nfs4_opendata_check_deleg(data
, state
);
1232 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1240 return ERR_PTR(ret
);
1243 static struct nfs4_state
*
1244 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1246 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1247 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1248 return _nfs4_opendata_to_nfs4_state(data
);
1251 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1253 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1254 struct nfs_open_context
*ctx
;
1256 spin_lock(&state
->inode
->i_lock
);
1257 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1258 if (ctx
->state
!= state
)
1260 get_nfs_open_context(ctx
);
1261 spin_unlock(&state
->inode
->i_lock
);
1264 spin_unlock(&state
->inode
->i_lock
);
1265 return ERR_PTR(-ENOENT
);
1268 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1270 struct nfs4_opendata
*opendata
;
1272 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1273 if (opendata
== NULL
)
1274 return ERR_PTR(-ENOMEM
);
1275 opendata
->state
= state
;
1276 atomic_inc(&state
->count
);
1280 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1282 struct nfs4_state
*newstate
;
1285 opendata
->o_arg
.open_flags
= 0;
1286 opendata
->o_arg
.fmode
= fmode
;
1287 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1288 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1289 nfs4_init_opendata_res(opendata
);
1290 ret
= _nfs4_recover_proc_open(opendata
);
1293 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1294 if (IS_ERR(newstate
))
1295 return PTR_ERR(newstate
);
1296 nfs4_close_state(newstate
, fmode
);
1301 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1303 struct nfs4_state
*newstate
;
1306 /* memory barrier prior to reading state->n_* */
1307 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1309 if (state
->n_rdwr
!= 0) {
1310 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1311 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1314 if (newstate
!= state
)
1317 if (state
->n_wronly
!= 0) {
1318 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1319 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1322 if (newstate
!= state
)
1325 if (state
->n_rdonly
!= 0) {
1326 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1327 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1330 if (newstate
!= state
)
1334 * We may have performed cached opens for all three recoveries.
1335 * Check if we need to update the current stateid.
1337 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1338 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1339 write_seqlock(&state
->seqlock
);
1340 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1341 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1342 write_sequnlock(&state
->seqlock
);
1349 * reclaim state on the server after a reboot.
1351 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1353 struct nfs_delegation
*delegation
;
1354 struct nfs4_opendata
*opendata
;
1355 fmode_t delegation_type
= 0;
1358 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1359 if (IS_ERR(opendata
))
1360 return PTR_ERR(opendata
);
1361 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1362 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1364 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1365 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1366 delegation_type
= delegation
->type
;
1368 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1369 status
= nfs4_open_recover(opendata
, state
);
1370 nfs4_opendata_put(opendata
);
1374 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1376 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1377 struct nfs4_exception exception
= { };
1380 err
= _nfs4_do_open_reclaim(ctx
, state
);
1381 if (err
!= -NFS4ERR_DELAY
)
1383 nfs4_handle_exception(server
, err
, &exception
);
1384 } while (exception
.retry
);
1388 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1390 struct nfs_open_context
*ctx
;
1393 ctx
= nfs4_state_find_open_context(state
);
1395 return PTR_ERR(ctx
);
1396 ret
= nfs4_do_open_reclaim(ctx
, state
);
1397 put_nfs_open_context(ctx
);
1401 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1403 struct nfs4_opendata
*opendata
;
1406 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1407 if (IS_ERR(opendata
))
1408 return PTR_ERR(opendata
);
1409 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1410 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1411 ret
= nfs4_open_recover(opendata
, state
);
1412 nfs4_opendata_put(opendata
);
1416 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1418 struct nfs4_exception exception
= { };
1419 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1422 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1428 case -NFS4ERR_BADSESSION
:
1429 case -NFS4ERR_BADSLOT
:
1430 case -NFS4ERR_BAD_HIGH_SLOT
:
1431 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1432 case -NFS4ERR_DEADSESSION
:
1433 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1435 case -NFS4ERR_STALE_CLIENTID
:
1436 case -NFS4ERR_STALE_STATEID
:
1437 case -NFS4ERR_EXPIRED
:
1438 /* Don't recall a delegation if it was lost */
1439 nfs4_schedule_lease_recovery(server
->nfs_client
);
1443 * The show must go on: exit, but mark the
1444 * stateid as needing recovery.
1446 case -NFS4ERR_DELEG_REVOKED
:
1447 case -NFS4ERR_ADMIN_REVOKED
:
1448 case -NFS4ERR_BAD_STATEID
:
1449 nfs_inode_find_state_and_recover(state
->inode
,
1451 nfs4_schedule_stateid_recovery(server
, state
);
1454 * User RPCSEC_GSS context has expired.
1455 * We cannot recover this stateid now, so
1456 * skip it and allow recovery thread to
1463 err
= nfs4_handle_exception(server
, err
, &exception
);
1464 } while (exception
.retry
);
1469 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1471 struct nfs4_opendata
*data
= calldata
;
1473 data
->rpc_status
= task
->tk_status
;
1474 if (data
->rpc_status
== 0) {
1475 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1476 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1477 renew_lease(data
->o_res
.server
, data
->timestamp
);
1482 static void nfs4_open_confirm_release(void *calldata
)
1484 struct nfs4_opendata
*data
= calldata
;
1485 struct nfs4_state
*state
= NULL
;
1487 /* If this request hasn't been cancelled, do nothing */
1488 if (data
->cancelled
== 0)
1490 /* In case of error, no cleanup! */
1491 if (!data
->rpc_done
)
1493 state
= nfs4_opendata_to_nfs4_state(data
);
1495 nfs4_close_state(state
, data
->o_arg
.fmode
);
1497 nfs4_opendata_put(data
);
1500 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1501 .rpc_call_done
= nfs4_open_confirm_done
,
1502 .rpc_release
= nfs4_open_confirm_release
,
1506 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1508 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1510 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1511 struct rpc_task
*task
;
1512 struct rpc_message msg
= {
1513 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1514 .rpc_argp
= &data
->c_arg
,
1515 .rpc_resp
= &data
->c_res
,
1516 .rpc_cred
= data
->owner
->so_cred
,
1518 struct rpc_task_setup task_setup_data
= {
1519 .rpc_client
= server
->client
,
1520 .rpc_message
= &msg
,
1521 .callback_ops
= &nfs4_open_confirm_ops
,
1522 .callback_data
= data
,
1523 .workqueue
= nfsiod_workqueue
,
1524 .flags
= RPC_TASK_ASYNC
,
1528 kref_get(&data
->kref
);
1530 data
->rpc_status
= 0;
1531 data
->timestamp
= jiffies
;
1532 task
= rpc_run_task(&task_setup_data
);
1534 return PTR_ERR(task
);
1535 status
= nfs4_wait_for_completion_rpc_task(task
);
1537 data
->cancelled
= 1;
1540 status
= data
->rpc_status
;
1545 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1547 struct nfs4_opendata
*data
= calldata
;
1548 struct nfs4_state_owner
*sp
= data
->owner
;
1550 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1553 * Check if we still need to send an OPEN call, or if we can use
1554 * a delegation instead.
1556 if (data
->state
!= NULL
) {
1557 struct nfs_delegation
*delegation
;
1559 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1562 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1563 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1564 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1565 goto unlock_no_action
;
1568 /* Update client id. */
1569 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1570 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1571 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1572 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1573 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1575 data
->timestamp
= jiffies
;
1576 if (nfs4_setup_sequence(data
->o_arg
.server
,
1577 &data
->o_arg
.seq_args
,
1578 &data
->o_res
.seq_res
,
1580 nfs_release_seqid(data
->o_arg
.seqid
);
1582 rpc_call_start(task
);
1587 task
->tk_action
= NULL
;
1591 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1593 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1594 nfs4_open_prepare(task
, calldata
);
1597 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1599 struct nfs4_opendata
*data
= calldata
;
1601 data
->rpc_status
= task
->tk_status
;
1603 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1606 if (task
->tk_status
== 0) {
1607 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1608 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1612 data
->rpc_status
= -ELOOP
;
1615 data
->rpc_status
= -EISDIR
;
1618 data
->rpc_status
= -ENOTDIR
;
1621 renew_lease(data
->o_res
.server
, data
->timestamp
);
1622 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1623 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1628 static void nfs4_open_release(void *calldata
)
1630 struct nfs4_opendata
*data
= calldata
;
1631 struct nfs4_state
*state
= NULL
;
1633 /* If this request hasn't been cancelled, do nothing */
1634 if (data
->cancelled
== 0)
1636 /* In case of error, no cleanup! */
1637 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1639 /* In case we need an open_confirm, no cleanup! */
1640 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1642 state
= nfs4_opendata_to_nfs4_state(data
);
1644 nfs4_close_state(state
, data
->o_arg
.fmode
);
1646 nfs4_opendata_put(data
);
1649 static const struct rpc_call_ops nfs4_open_ops
= {
1650 .rpc_call_prepare
= nfs4_open_prepare
,
1651 .rpc_call_done
= nfs4_open_done
,
1652 .rpc_release
= nfs4_open_release
,
1655 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1656 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1657 .rpc_call_done
= nfs4_open_done
,
1658 .rpc_release
= nfs4_open_release
,
1661 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1663 struct inode
*dir
= data
->dir
->d_inode
;
1664 struct nfs_server
*server
= NFS_SERVER(dir
);
1665 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1666 struct nfs_openres
*o_res
= &data
->o_res
;
1667 struct rpc_task
*task
;
1668 struct rpc_message msg
= {
1669 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1672 .rpc_cred
= data
->owner
->so_cred
,
1674 struct rpc_task_setup task_setup_data
= {
1675 .rpc_client
= server
->client
,
1676 .rpc_message
= &msg
,
1677 .callback_ops
= &nfs4_open_ops
,
1678 .callback_data
= data
,
1679 .workqueue
= nfsiod_workqueue
,
1680 .flags
= RPC_TASK_ASYNC
,
1684 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1685 kref_get(&data
->kref
);
1687 data
->rpc_status
= 0;
1688 data
->cancelled
= 0;
1690 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1691 task
= rpc_run_task(&task_setup_data
);
1693 return PTR_ERR(task
);
1694 status
= nfs4_wait_for_completion_rpc_task(task
);
1696 data
->cancelled
= 1;
1699 status
= data
->rpc_status
;
1705 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1707 struct inode
*dir
= data
->dir
->d_inode
;
1708 struct nfs_openres
*o_res
= &data
->o_res
;
1711 status
= nfs4_run_open_task(data
, 1);
1712 if (status
!= 0 || !data
->rpc_done
)
1715 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1717 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1718 status
= _nfs4_proc_open_confirm(data
);
1726 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1727 struct nfs4_opendata
*opendata
,
1728 struct nfs4_state
*state
, fmode_t fmode
)
1730 struct nfs_access_entry cache
;
1733 /* access call failed or for some reason the server doesn't
1734 * support any access modes -- defer access call until later */
1735 if (opendata
->o_res
.access_supported
== 0)
1739 /* don't check MAY_WRITE - a newly created file may not have
1740 * write mode bits, but POSIX allows the creating process to write */
1741 if (fmode
& FMODE_READ
)
1743 if (fmode
& FMODE_EXEC
)
1747 cache
.jiffies
= jiffies
;
1748 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1749 nfs_access_add_cache(state
->inode
, &cache
);
1751 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1754 /* even though OPEN succeeded, access is denied. Close the file */
1755 nfs4_close_state(state
, fmode
);
1760 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1762 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1764 struct inode
*dir
= data
->dir
->d_inode
;
1765 struct nfs_server
*server
= NFS_SERVER(dir
);
1766 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1767 struct nfs_openres
*o_res
= &data
->o_res
;
1770 status
= nfs4_run_open_task(data
, 0);
1771 if (!data
->rpc_done
)
1774 if (status
== -NFS4ERR_BADNAME
&&
1775 !(o_arg
->open_flags
& O_CREAT
))
1780 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1782 if (o_arg
->open_flags
& O_CREAT
)
1783 update_changeattr(dir
, &o_res
->cinfo
);
1784 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1785 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1786 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1787 status
= _nfs4_proc_open_confirm(data
);
1791 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1792 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1796 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1801 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1802 ret
= nfs4_wait_clnt_recover(clp
);
1805 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1806 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1808 nfs4_schedule_state_manager(clp
);
1814 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1816 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1821 * reclaim state on the server after a network partition.
1822 * Assumes caller holds the appropriate lock
1824 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1826 struct nfs4_opendata
*opendata
;
1829 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1830 if (IS_ERR(opendata
))
1831 return PTR_ERR(opendata
);
1832 ret
= nfs4_open_recover(opendata
, state
);
1834 d_drop(ctx
->dentry
);
1835 nfs4_opendata_put(opendata
);
1839 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1841 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1842 struct nfs4_exception exception
= { };
1846 err
= _nfs4_open_expired(ctx
, state
);
1850 case -NFS4ERR_GRACE
:
1851 case -NFS4ERR_DELAY
:
1852 nfs4_handle_exception(server
, err
, &exception
);
1855 } while (exception
.retry
);
1860 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1862 struct nfs_open_context
*ctx
;
1865 ctx
= nfs4_state_find_open_context(state
);
1867 return PTR_ERR(ctx
);
1868 ret
= nfs4_do_open_expired(ctx
, state
);
1869 put_nfs_open_context(ctx
);
1873 #if defined(CONFIG_NFS_V4_1)
1874 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1876 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1877 nfs4_stateid
*stateid
= &state
->stateid
;
1880 /* If a state reset has been done, test_stateid is unneeded */
1881 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1884 status
= nfs41_test_stateid(server
, stateid
);
1885 if (status
!= NFS_OK
) {
1886 /* Free the stateid unless the server explicitly
1887 * informs us the stateid is unrecognized. */
1888 if (status
!= -NFS4ERR_BAD_STATEID
)
1889 nfs41_free_stateid(server
, stateid
);
1890 nfs_remove_bad_delegation(state
->inode
);
1892 write_seqlock(&state
->seqlock
);
1893 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1894 write_sequnlock(&state
->seqlock
);
1895 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1900 * nfs41_check_open_stateid - possibly free an open stateid
1902 * @state: NFSv4 state for an inode
1904 * Returns NFS_OK if recovery for this stateid is now finished.
1905 * Otherwise a negative NFS4ERR value is returned.
1907 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1909 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1910 nfs4_stateid
*stateid
= &state
->open_stateid
;
1913 /* If a state reset has been done, test_stateid is unneeded */
1914 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1915 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1916 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1917 return -NFS4ERR_BAD_STATEID
;
1919 status
= nfs41_test_stateid(server
, stateid
);
1920 if (status
!= NFS_OK
) {
1921 /* Free the stateid unless the server explicitly
1922 * informs us the stateid is unrecognized. */
1923 if (status
!= -NFS4ERR_BAD_STATEID
)
1924 nfs41_free_stateid(server
, stateid
);
1926 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1927 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1928 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1933 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1937 nfs41_clear_delegation_stateid(state
);
1938 status
= nfs41_check_open_stateid(state
);
1939 if (status
!= NFS_OK
)
1940 status
= nfs4_open_expired(sp
, state
);
1946 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1947 * fields corresponding to attributes that were used to store the verifier.
1948 * Make sure we clobber those fields in the later setattr call
1950 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1952 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1953 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1954 sattr
->ia_valid
|= ATTR_ATIME
;
1956 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1957 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1958 sattr
->ia_valid
|= ATTR_MTIME
;
1962 * Returns a referenced nfs4_state
1964 static int _nfs4_do_open(struct inode
*dir
,
1965 struct dentry
*dentry
,
1968 struct iattr
*sattr
,
1969 struct rpc_cred
*cred
,
1970 struct nfs4_state
**res
,
1971 struct nfs4_threshold
**ctx_th
)
1973 struct nfs4_state_owner
*sp
;
1974 struct nfs4_state
*state
= NULL
;
1975 struct nfs_server
*server
= NFS_SERVER(dir
);
1976 struct nfs4_opendata
*opendata
;
1979 /* Protect against reboot recovery conflicts */
1981 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1983 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1986 status
= nfs4_recover_expired_lease(server
);
1988 goto err_put_state_owner
;
1989 if (dentry
->d_inode
!= NULL
)
1990 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1992 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1993 if (opendata
== NULL
)
1994 goto err_put_state_owner
;
1996 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
1997 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
1998 if (!opendata
->f_attr
.mdsthreshold
)
1999 goto err_opendata_put
;
2000 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2002 if (dentry
->d_inode
!= NULL
)
2003 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2005 status
= _nfs4_proc_open(opendata
);
2007 goto err_opendata_put
;
2009 state
= nfs4_opendata_to_nfs4_state(opendata
);
2010 status
= PTR_ERR(state
);
2012 goto err_opendata_put
;
2013 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2014 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2016 status
= nfs4_opendata_access(cred
, opendata
, state
, fmode
);
2018 goto err_opendata_put
;
2020 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
2021 nfs4_exclusive_attrset(opendata
, sattr
);
2023 nfs_fattr_init(opendata
->o_res
.f_attr
);
2024 status
= nfs4_do_setattr(state
->inode
, cred
,
2025 opendata
->o_res
.f_attr
, sattr
,
2028 nfs_setattr_update_inode(state
->inode
, sattr
);
2029 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2032 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2033 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2035 kfree(opendata
->f_attr
.mdsthreshold
);
2036 opendata
->f_attr
.mdsthreshold
= NULL
;
2038 nfs4_opendata_put(opendata
);
2039 nfs4_put_state_owner(sp
);
2043 kfree(opendata
->f_attr
.mdsthreshold
);
2044 nfs4_opendata_put(opendata
);
2045 err_put_state_owner
:
2046 nfs4_put_state_owner(sp
);
2053 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2054 struct dentry
*dentry
,
2057 struct iattr
*sattr
,
2058 struct rpc_cred
*cred
,
2059 struct nfs4_threshold
**ctx_th
)
2061 struct nfs4_exception exception
= { };
2062 struct nfs4_state
*res
;
2065 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
2067 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
2071 /* NOTE: BAD_SEQID means the server and client disagree about the
2072 * book-keeping w.r.t. state-changing operations
2073 * (OPEN/CLOSE/LOCK/LOCKU...)
2074 * It is actually a sign of a bug on the client or on the server.
2076 * If we receive a BAD_SEQID error in the particular case of
2077 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2078 * have unhashed the old state_owner for us, and that we can
2079 * therefore safely retry using a new one. We should still warn
2080 * the user though...
2082 if (status
== -NFS4ERR_BAD_SEQID
) {
2083 pr_warn_ratelimited("NFS: v4 server %s "
2084 " returned a bad sequence-id error!\n",
2085 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2086 exception
.retry
= 1;
2090 * BAD_STATEID on OPEN means that the server cancelled our
2091 * state before it received the OPEN_CONFIRM.
2092 * Recover by retrying the request as per the discussion
2093 * on Page 181 of RFC3530.
2095 if (status
== -NFS4ERR_BAD_STATEID
) {
2096 exception
.retry
= 1;
2099 if (status
== -EAGAIN
) {
2100 /* We must have found a delegation */
2101 exception
.retry
= 1;
2104 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
2105 status
, &exception
));
2106 } while (exception
.retry
);
2110 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2111 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2112 struct nfs4_state
*state
)
2114 struct nfs_server
*server
= NFS_SERVER(inode
);
2115 struct nfs_setattrargs arg
= {
2116 .fh
= NFS_FH(inode
),
2119 .bitmask
= server
->attr_bitmask
,
2121 struct nfs_setattrres res
= {
2125 struct rpc_message msg
= {
2126 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2131 unsigned long timestamp
= jiffies
;
2134 nfs_fattr_init(fattr
);
2136 if (state
!= NULL
) {
2137 struct nfs_lockowner lockowner
= {
2138 .l_owner
= current
->files
,
2139 .l_pid
= current
->tgid
,
2141 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2143 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
2145 /* Use that stateid */
2147 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2149 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2150 if (status
== 0 && state
!= NULL
)
2151 renew_lease(server
, timestamp
);
2155 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2156 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2157 struct nfs4_state
*state
)
2159 struct nfs_server
*server
= NFS_SERVER(inode
);
2160 struct nfs4_exception exception
= {
2166 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2168 case -NFS4ERR_OPENMODE
:
2169 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2171 if (sattr
->ia_valid
& ATTR_OPEN
)
2176 err
= nfs4_handle_exception(server
, err
, &exception
);
2177 } while (exception
.retry
);
2182 struct nfs4_closedata
{
2183 struct inode
*inode
;
2184 struct nfs4_state
*state
;
2185 struct nfs_closeargs arg
;
2186 struct nfs_closeres res
;
2187 struct nfs_fattr fattr
;
2188 unsigned long timestamp
;
2193 static void nfs4_free_closedata(void *data
)
2195 struct nfs4_closedata
*calldata
= data
;
2196 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2197 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2200 pnfs_roc_release(calldata
->state
->inode
);
2201 nfs4_put_open_state(calldata
->state
);
2202 nfs_free_seqid(calldata
->arg
.seqid
);
2203 nfs4_put_state_owner(sp
);
2204 nfs_sb_deactive_async(sb
);
2208 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2211 spin_lock(&state
->owner
->so_lock
);
2212 if (!(fmode
& FMODE_READ
))
2213 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2214 if (!(fmode
& FMODE_WRITE
))
2215 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2216 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2217 spin_unlock(&state
->owner
->so_lock
);
2220 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2222 struct nfs4_closedata
*calldata
= data
;
2223 struct nfs4_state
*state
= calldata
->state
;
2224 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2226 dprintk("%s: begin!\n", __func__
);
2227 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2229 /* hmm. we are done with the inode, and in the process of freeing
2230 * the state_owner. we keep this around to process errors
2232 switch (task
->tk_status
) {
2235 pnfs_roc_set_barrier(state
->inode
,
2236 calldata
->roc_barrier
);
2237 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2238 renew_lease(server
, calldata
->timestamp
);
2239 nfs4_close_clear_stateid_flags(state
,
2240 calldata
->arg
.fmode
);
2242 case -NFS4ERR_STALE_STATEID
:
2243 case -NFS4ERR_OLD_STATEID
:
2244 case -NFS4ERR_BAD_STATEID
:
2245 case -NFS4ERR_EXPIRED
:
2246 if (calldata
->arg
.fmode
== 0)
2249 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2250 rpc_restart_call_prepare(task
);
2252 nfs_release_seqid(calldata
->arg
.seqid
);
2253 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2254 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2257 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2259 struct nfs4_closedata
*calldata
= data
;
2260 struct nfs4_state
*state
= calldata
->state
;
2261 struct inode
*inode
= calldata
->inode
;
2264 dprintk("%s: begin!\n", __func__
);
2265 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2268 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2269 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2270 spin_lock(&state
->owner
->so_lock
);
2271 /* Calculate the change in open mode */
2272 if (state
->n_rdwr
== 0) {
2273 if (state
->n_rdonly
== 0) {
2274 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2275 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2276 calldata
->arg
.fmode
&= ~FMODE_READ
;
2278 if (state
->n_wronly
== 0) {
2279 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2280 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2281 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2284 spin_unlock(&state
->owner
->so_lock
);
2287 /* Note: exit _without_ calling nfs4_close_done */
2288 task
->tk_action
= NULL
;
2292 if (calldata
->arg
.fmode
== 0) {
2293 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2294 if (calldata
->roc
&&
2295 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
))
2299 nfs_fattr_init(calldata
->res
.fattr
);
2300 calldata
->timestamp
= jiffies
;
2301 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2302 &calldata
->arg
.seq_args
,
2303 &calldata
->res
.seq_res
,
2305 nfs_release_seqid(calldata
->arg
.seqid
);
2307 rpc_call_start(task
);
2309 dprintk("%s: done!\n", __func__
);
2312 static const struct rpc_call_ops nfs4_close_ops
= {
2313 .rpc_call_prepare
= nfs4_close_prepare
,
2314 .rpc_call_done
= nfs4_close_done
,
2315 .rpc_release
= nfs4_free_closedata
,
2319 * It is possible for data to be read/written from a mem-mapped file
2320 * after the sys_close call (which hits the vfs layer as a flush).
2321 * This means that we can't safely call nfsv4 close on a file until
2322 * the inode is cleared. This in turn means that we are not good
2323 * NFSv4 citizens - we do not indicate to the server to update the file's
2324 * share state even when we are done with one of the three share
2325 * stateid's in the inode.
2327 * NOTE: Caller must be holding the sp->so_owner semaphore!
2329 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2331 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2332 struct nfs4_closedata
*calldata
;
2333 struct nfs4_state_owner
*sp
= state
->owner
;
2334 struct rpc_task
*task
;
2335 struct rpc_message msg
= {
2336 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2337 .rpc_cred
= state
->owner
->so_cred
,
2339 struct rpc_task_setup task_setup_data
= {
2340 .rpc_client
= server
->client
,
2341 .rpc_message
= &msg
,
2342 .callback_ops
= &nfs4_close_ops
,
2343 .workqueue
= nfsiod_workqueue
,
2344 .flags
= RPC_TASK_ASYNC
,
2346 int status
= -ENOMEM
;
2348 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2349 if (calldata
== NULL
)
2351 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2352 calldata
->inode
= state
->inode
;
2353 calldata
->state
= state
;
2354 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2355 calldata
->arg
.stateid
= &state
->open_stateid
;
2356 /* Serialization for the sequence id */
2357 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2358 if (calldata
->arg
.seqid
== NULL
)
2359 goto out_free_calldata
;
2360 calldata
->arg
.fmode
= 0;
2361 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2362 calldata
->res
.fattr
= &calldata
->fattr
;
2363 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2364 calldata
->res
.server
= server
;
2365 calldata
->roc
= pnfs_roc(state
->inode
);
2366 nfs_sb_active(calldata
->inode
->i_sb
);
2368 msg
.rpc_argp
= &calldata
->arg
;
2369 msg
.rpc_resp
= &calldata
->res
;
2370 task_setup_data
.callback_data
= calldata
;
2371 task
= rpc_run_task(&task_setup_data
);
2373 return PTR_ERR(task
);
2376 status
= rpc_wait_for_completion_task(task
);
2382 nfs4_put_open_state(state
);
2383 nfs4_put_state_owner(sp
);
2387 static struct inode
*
2388 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2390 struct nfs4_state
*state
;
2392 /* Protect against concurrent sillydeletes */
2393 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2394 ctx
->cred
, &ctx
->mdsthreshold
);
2396 return ERR_CAST(state
);
2398 return igrab(state
->inode
);
2401 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2403 if (ctx
->state
== NULL
)
2406 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2408 nfs4_close_state(ctx
->state
, ctx
->mode
);
2411 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2413 struct nfs4_server_caps_arg args
= {
2416 struct nfs4_server_caps_res res
= {};
2417 struct rpc_message msg
= {
2418 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2424 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2426 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2427 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2428 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2429 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2430 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2431 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2432 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2433 server
->caps
|= NFS_CAP_ACLS
;
2434 if (res
.has_links
!= 0)
2435 server
->caps
|= NFS_CAP_HARDLINKS
;
2436 if (res
.has_symlinks
!= 0)
2437 server
->caps
|= NFS_CAP_SYMLINKS
;
2438 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2439 server
->caps
|= NFS_CAP_FILEID
;
2440 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2441 server
->caps
|= NFS_CAP_MODE
;
2442 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2443 server
->caps
|= NFS_CAP_NLINK
;
2444 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2445 server
->caps
|= NFS_CAP_OWNER
;
2446 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2447 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2448 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2449 server
->caps
|= NFS_CAP_ATIME
;
2450 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2451 server
->caps
|= NFS_CAP_CTIME
;
2452 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2453 server
->caps
|= NFS_CAP_MTIME
;
2455 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2456 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2457 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2458 server
->acl_bitmask
= res
.acl_bitmask
;
2459 server
->fh_expire_type
= res
.fh_expire_type
;
2465 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2467 struct nfs4_exception exception
= { };
2470 err
= nfs4_handle_exception(server
,
2471 _nfs4_server_capabilities(server
, fhandle
),
2473 } while (exception
.retry
);
2477 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2478 struct nfs_fsinfo
*info
)
2480 struct nfs4_lookup_root_arg args
= {
2481 .bitmask
= nfs4_fattr_bitmap
,
2483 struct nfs4_lookup_res res
= {
2485 .fattr
= info
->fattr
,
2488 struct rpc_message msg
= {
2489 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2494 nfs_fattr_init(info
->fattr
);
2495 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2498 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2499 struct nfs_fsinfo
*info
)
2501 struct nfs4_exception exception
= { };
2504 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2507 case -NFS4ERR_WRONGSEC
:
2510 err
= nfs4_handle_exception(server
, err
, &exception
);
2512 } while (exception
.retry
);
2517 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2518 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2520 struct rpc_auth
*auth
;
2523 auth
= rpcauth_create(flavor
, server
->client
);
2528 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2533 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2534 struct nfs_fsinfo
*info
)
2536 int i
, len
, status
= 0;
2537 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2539 len
= rpcauth_list_flavors(flav_array
, ARRAY_SIZE(flav_array
));
2543 for (i
= 0; i
< len
; i
++) {
2544 /* AUTH_UNIX is the default flavor if none was specified,
2545 * thus has already been tried. */
2546 if (flav_array
[i
] == RPC_AUTH_UNIX
)
2549 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2550 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2555 * -EACCESS could mean that the user doesn't have correct permissions
2556 * to access the mount. It could also mean that we tried to mount
2557 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2558 * existing mount programs don't handle -EACCES very well so it should
2559 * be mapped to -EPERM instead.
2561 if (status
== -EACCES
)
2567 * get the file handle for the "/" directory on the server
2569 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2570 struct nfs_fsinfo
*info
)
2572 int minor_version
= server
->nfs_client
->cl_minorversion
;
2573 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2574 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2576 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2577 * by nfs4_map_errors() as this function exits.
2579 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2581 status
= nfs4_server_capabilities(server
, fhandle
);
2583 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2584 return nfs4_map_errors(status
);
2587 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2588 struct nfs_fsinfo
*info
)
2591 struct nfs_fattr
*fattr
= info
->fattr
;
2593 error
= nfs4_server_capabilities(server
, mntfh
);
2595 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2599 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2601 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2605 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2606 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2607 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2613 * Get locations and (maybe) other attributes of a referral.
2614 * Note that we'll actually follow the referral later when
2615 * we detect fsid mismatch in inode revalidation
2617 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2618 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2619 struct nfs_fh
*fhandle
)
2621 int status
= -ENOMEM
;
2622 struct page
*page
= NULL
;
2623 struct nfs4_fs_locations
*locations
= NULL
;
2625 page
= alloc_page(GFP_KERNEL
);
2628 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2629 if (locations
== NULL
)
2632 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2635 /* Make sure server returned a different fsid for the referral */
2636 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2637 dprintk("%s: server did not return a different fsid for"
2638 " a referral at %s\n", __func__
, name
->name
);
2642 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2643 nfs_fixup_referral_attributes(&locations
->fattr
);
2645 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2646 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2647 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2655 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2657 struct nfs4_getattr_arg args
= {
2659 .bitmask
= server
->attr_bitmask
,
2661 struct nfs4_getattr_res res
= {
2665 struct rpc_message msg
= {
2666 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2671 nfs_fattr_init(fattr
);
2672 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2675 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2677 struct nfs4_exception exception
= { };
2680 err
= nfs4_handle_exception(server
,
2681 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2683 } while (exception
.retry
);
2688 * The file is not closed if it is opened due to the a request to change
2689 * the size of the file. The open call will not be needed once the
2690 * VFS layer lookup-intents are implemented.
2692 * Close is called when the inode is destroyed.
2693 * If we haven't opened the file for O_WRONLY, we
2694 * need to in the size_change case to obtain a stateid.
2697 * Because OPEN is always done by name in nfsv4, it is
2698 * possible that we opened a different file by the same
2699 * name. We can recognize this race condition, but we
2700 * can't do anything about it besides returning an error.
2702 * This will be fixed with VFS changes (lookup-intent).
2705 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2706 struct iattr
*sattr
)
2708 struct inode
*inode
= dentry
->d_inode
;
2709 struct rpc_cred
*cred
= NULL
;
2710 struct nfs4_state
*state
= NULL
;
2713 if (pnfs_ld_layoutret_on_setattr(inode
))
2714 pnfs_return_layout(inode
);
2716 nfs_fattr_init(fattr
);
2718 /* Deal with open(O_TRUNC) */
2719 if (sattr
->ia_valid
& ATTR_OPEN
)
2720 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2722 /* Optimization: if the end result is no change, don't RPC */
2723 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2726 /* Search for an existing open(O_WRITE) file */
2727 if (sattr
->ia_valid
& ATTR_FILE
) {
2728 struct nfs_open_context
*ctx
;
2730 ctx
= nfs_file_open_context(sattr
->ia_file
);
2737 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2739 nfs_setattr_update_inode(inode
, sattr
);
2743 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2744 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2745 struct nfs_fattr
*fattr
)
2747 struct nfs_server
*server
= NFS_SERVER(dir
);
2749 struct nfs4_lookup_arg args
= {
2750 .bitmask
= server
->attr_bitmask
,
2751 .dir_fh
= NFS_FH(dir
),
2754 struct nfs4_lookup_res res
= {
2759 struct rpc_message msg
= {
2760 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2765 nfs_fattr_init(fattr
);
2767 dprintk("NFS call lookup %s\n", name
->name
);
2768 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2769 dprintk("NFS reply lookup: %d\n", status
);
2773 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2775 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2776 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2777 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2781 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2782 struct qstr
*name
, struct nfs_fh
*fhandle
,
2783 struct nfs_fattr
*fattr
)
2785 struct nfs4_exception exception
= { };
2786 struct rpc_clnt
*client
= *clnt
;
2789 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2791 case -NFS4ERR_BADNAME
:
2794 case -NFS4ERR_MOVED
:
2795 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2797 case -NFS4ERR_WRONGSEC
:
2799 if (client
!= *clnt
)
2802 client
= nfs4_create_sec_client(client
, dir
, name
);
2804 return PTR_ERR(client
);
2806 exception
.retry
= 1;
2809 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2811 } while (exception
.retry
);
2816 else if (client
!= *clnt
)
2817 rpc_shutdown_client(client
);
2822 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2823 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2826 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2828 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2829 if (client
!= NFS_CLIENT(dir
)) {
2830 rpc_shutdown_client(client
);
2831 nfs_fixup_secinfo_attributes(fattr
);
2837 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2838 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2841 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2843 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2845 rpc_shutdown_client(client
);
2846 return ERR_PTR(status
);
2851 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2853 struct nfs_server
*server
= NFS_SERVER(inode
);
2854 struct nfs4_accessargs args
= {
2855 .fh
= NFS_FH(inode
),
2856 .bitmask
= server
->cache_consistency_bitmask
,
2858 struct nfs4_accessres res
= {
2861 struct rpc_message msg
= {
2862 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2865 .rpc_cred
= entry
->cred
,
2867 int mode
= entry
->mask
;
2871 * Determine which access bits we want to ask for...
2873 if (mode
& MAY_READ
)
2874 args
.access
|= NFS4_ACCESS_READ
;
2875 if (S_ISDIR(inode
->i_mode
)) {
2876 if (mode
& MAY_WRITE
)
2877 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2878 if (mode
& MAY_EXEC
)
2879 args
.access
|= NFS4_ACCESS_LOOKUP
;
2881 if (mode
& MAY_WRITE
)
2882 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2883 if (mode
& MAY_EXEC
)
2884 args
.access
|= NFS4_ACCESS_EXECUTE
;
2887 res
.fattr
= nfs_alloc_fattr();
2888 if (res
.fattr
== NULL
)
2891 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2893 nfs_access_set_mask(entry
, res
.access
);
2894 nfs_refresh_inode(inode
, res
.fattr
);
2896 nfs_free_fattr(res
.fattr
);
2900 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2902 struct nfs4_exception exception
= { };
2905 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2906 _nfs4_proc_access(inode
, entry
),
2908 } while (exception
.retry
);
2913 * TODO: For the time being, we don't try to get any attributes
2914 * along with any of the zero-copy operations READ, READDIR,
2917 * In the case of the first three, we want to put the GETATTR
2918 * after the read-type operation -- this is because it is hard
2919 * to predict the length of a GETATTR response in v4, and thus
2920 * align the READ data correctly. This means that the GETATTR
2921 * may end up partially falling into the page cache, and we should
2922 * shift it into the 'tail' of the xdr_buf before processing.
2923 * To do this efficiently, we need to know the total length
2924 * of data received, which doesn't seem to be available outside
2927 * In the case of WRITE, we also want to put the GETATTR after
2928 * the operation -- in this case because we want to make sure
2929 * we get the post-operation mtime and size.
2931 * Both of these changes to the XDR layer would in fact be quite
2932 * minor, but I decided to leave them for a subsequent patch.
2934 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2935 unsigned int pgbase
, unsigned int pglen
)
2937 struct nfs4_readlink args
= {
2938 .fh
= NFS_FH(inode
),
2943 struct nfs4_readlink_res res
;
2944 struct rpc_message msg
= {
2945 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2950 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2953 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2954 unsigned int pgbase
, unsigned int pglen
)
2956 struct nfs4_exception exception
= { };
2959 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2960 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2962 } while (exception
.retry
);
2967 * This is just for mknod. open(O_CREAT) will always do ->open_context().
2970 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2973 struct nfs_open_context
*ctx
;
2974 struct nfs4_state
*state
;
2977 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
2979 return PTR_ERR(ctx
);
2981 sattr
->ia_mode
&= ~current_umask();
2982 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
2983 flags
, sattr
, ctx
->cred
,
2984 &ctx
->mdsthreshold
);
2986 if (IS_ERR(state
)) {
2987 status
= PTR_ERR(state
);
2990 d_add(dentry
, igrab(state
->inode
));
2991 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2994 put_nfs_open_context(ctx
);
2998 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3000 struct nfs_server
*server
= NFS_SERVER(dir
);
3001 struct nfs_removeargs args
= {
3005 struct nfs_removeres res
= {
3008 struct rpc_message msg
= {
3009 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3015 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3017 update_changeattr(dir
, &res
.cinfo
);
3021 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3023 struct nfs4_exception exception
= { };
3026 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3027 _nfs4_proc_remove(dir
, name
),
3029 } while (exception
.retry
);
3033 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3035 struct nfs_server
*server
= NFS_SERVER(dir
);
3036 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3037 struct nfs_removeres
*res
= msg
->rpc_resp
;
3039 res
->server
= server
;
3040 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3041 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3044 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3046 if (nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3047 &data
->args
.seq_args
,
3051 rpc_call_start(task
);
3054 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3056 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
3058 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3060 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3062 update_changeattr(dir
, &res
->cinfo
);
3066 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3068 struct nfs_server
*server
= NFS_SERVER(dir
);
3069 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3070 struct nfs_renameres
*res
= msg
->rpc_resp
;
3072 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3073 res
->server
= server
;
3074 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3077 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3079 if (nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3080 &data
->args
.seq_args
,
3084 rpc_call_start(task
);
3087 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3088 struct inode
*new_dir
)
3090 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3092 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3094 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3097 update_changeattr(old_dir
, &res
->old_cinfo
);
3098 update_changeattr(new_dir
, &res
->new_cinfo
);
3102 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3103 struct inode
*new_dir
, struct qstr
*new_name
)
3105 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3106 struct nfs_renameargs arg
= {
3107 .old_dir
= NFS_FH(old_dir
),
3108 .new_dir
= NFS_FH(new_dir
),
3109 .old_name
= old_name
,
3110 .new_name
= new_name
,
3112 struct nfs_renameres res
= {
3115 struct rpc_message msg
= {
3116 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3120 int status
= -ENOMEM
;
3122 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3124 update_changeattr(old_dir
, &res
.old_cinfo
);
3125 update_changeattr(new_dir
, &res
.new_cinfo
);
3130 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3131 struct inode
*new_dir
, struct qstr
*new_name
)
3133 struct nfs4_exception exception
= { };
3136 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3137 _nfs4_proc_rename(old_dir
, old_name
,
3140 } while (exception
.retry
);
3144 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3146 struct nfs_server
*server
= NFS_SERVER(inode
);
3147 struct nfs4_link_arg arg
= {
3148 .fh
= NFS_FH(inode
),
3149 .dir_fh
= NFS_FH(dir
),
3151 .bitmask
= server
->attr_bitmask
,
3153 struct nfs4_link_res res
= {
3156 struct rpc_message msg
= {
3157 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3161 int status
= -ENOMEM
;
3163 res
.fattr
= nfs_alloc_fattr();
3164 if (res
.fattr
== NULL
)
3167 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3169 update_changeattr(dir
, &res
.cinfo
);
3170 nfs_post_op_update_inode(inode
, res
.fattr
);
3173 nfs_free_fattr(res
.fattr
);
3177 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3179 struct nfs4_exception exception
= { };
3182 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3183 _nfs4_proc_link(inode
, dir
, name
),
3185 } while (exception
.retry
);
3189 struct nfs4_createdata
{
3190 struct rpc_message msg
;
3191 struct nfs4_create_arg arg
;
3192 struct nfs4_create_res res
;
3194 struct nfs_fattr fattr
;
3197 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3198 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3200 struct nfs4_createdata
*data
;
3202 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3204 struct nfs_server
*server
= NFS_SERVER(dir
);
3206 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3207 data
->msg
.rpc_argp
= &data
->arg
;
3208 data
->msg
.rpc_resp
= &data
->res
;
3209 data
->arg
.dir_fh
= NFS_FH(dir
);
3210 data
->arg
.server
= server
;
3211 data
->arg
.name
= name
;
3212 data
->arg
.attrs
= sattr
;
3213 data
->arg
.ftype
= ftype
;
3214 data
->arg
.bitmask
= server
->attr_bitmask
;
3215 data
->res
.server
= server
;
3216 data
->res
.fh
= &data
->fh
;
3217 data
->res
.fattr
= &data
->fattr
;
3218 nfs_fattr_init(data
->res
.fattr
);
3223 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3225 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3226 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3228 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3229 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3234 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3239 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3240 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3242 struct nfs4_createdata
*data
;
3243 int status
= -ENAMETOOLONG
;
3245 if (len
> NFS4_MAXPATHLEN
)
3249 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3253 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3254 data
->arg
.u
.symlink
.pages
= &page
;
3255 data
->arg
.u
.symlink
.len
= len
;
3257 status
= nfs4_do_create(dir
, dentry
, data
);
3259 nfs4_free_createdata(data
);
3264 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3265 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3267 struct nfs4_exception exception
= { };
3270 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3271 _nfs4_proc_symlink(dir
, dentry
, page
,
3274 } while (exception
.retry
);
3278 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3279 struct iattr
*sattr
)
3281 struct nfs4_createdata
*data
;
3282 int status
= -ENOMEM
;
3284 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3288 status
= nfs4_do_create(dir
, dentry
, data
);
3290 nfs4_free_createdata(data
);
3295 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3296 struct iattr
*sattr
)
3298 struct nfs4_exception exception
= { };
3301 sattr
->ia_mode
&= ~current_umask();
3303 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3304 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3306 } while (exception
.retry
);
3310 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3311 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3313 struct inode
*dir
= dentry
->d_inode
;
3314 struct nfs4_readdir_arg args
= {
3319 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3322 struct nfs4_readdir_res res
;
3323 struct rpc_message msg
= {
3324 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3331 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3332 dentry
->d_parent
->d_name
.name
,
3333 dentry
->d_name
.name
,
3334 (unsigned long long)cookie
);
3335 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3336 res
.pgbase
= args
.pgbase
;
3337 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3339 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3340 status
+= args
.pgbase
;
3343 nfs_invalidate_atime(dir
);
3345 dprintk("%s: returns %d\n", __func__
, status
);
3349 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3350 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3352 struct nfs4_exception exception
= { };
3355 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3356 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3357 pages
, count
, plus
),
3359 } while (exception
.retry
);
3363 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3364 struct iattr
*sattr
, dev_t rdev
)
3366 struct nfs4_createdata
*data
;
3367 int mode
= sattr
->ia_mode
;
3368 int status
= -ENOMEM
;
3370 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3375 data
->arg
.ftype
= NF4FIFO
;
3376 else if (S_ISBLK(mode
)) {
3377 data
->arg
.ftype
= NF4BLK
;
3378 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3379 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3381 else if (S_ISCHR(mode
)) {
3382 data
->arg
.ftype
= NF4CHR
;
3383 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3384 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3385 } else if (!S_ISSOCK(mode
)) {
3390 status
= nfs4_do_create(dir
, dentry
, data
);
3392 nfs4_free_createdata(data
);
3397 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3398 struct iattr
*sattr
, dev_t rdev
)
3400 struct nfs4_exception exception
= { };
3403 sattr
->ia_mode
&= ~current_umask();
3405 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3406 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3408 } while (exception
.retry
);
3412 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3413 struct nfs_fsstat
*fsstat
)
3415 struct nfs4_statfs_arg args
= {
3417 .bitmask
= server
->attr_bitmask
,
3419 struct nfs4_statfs_res res
= {
3422 struct rpc_message msg
= {
3423 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3428 nfs_fattr_init(fsstat
->fattr
);
3429 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3432 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3434 struct nfs4_exception exception
= { };
3437 err
= nfs4_handle_exception(server
,
3438 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3440 } while (exception
.retry
);
3444 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3445 struct nfs_fsinfo
*fsinfo
)
3447 struct nfs4_fsinfo_arg args
= {
3449 .bitmask
= server
->attr_bitmask
,
3451 struct nfs4_fsinfo_res res
= {
3454 struct rpc_message msg
= {
3455 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3460 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3463 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3465 struct nfs4_exception exception
= { };
3469 err
= nfs4_handle_exception(server
,
3470 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3472 } while (exception
.retry
);
3476 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3480 nfs_fattr_init(fsinfo
->fattr
);
3481 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3483 /* block layout checks this! */
3484 server
->pnfs_blksize
= fsinfo
->blksize
;
3485 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3491 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3492 struct nfs_pathconf
*pathconf
)
3494 struct nfs4_pathconf_arg args
= {
3496 .bitmask
= server
->attr_bitmask
,
3498 struct nfs4_pathconf_res res
= {
3499 .pathconf
= pathconf
,
3501 struct rpc_message msg
= {
3502 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3507 /* None of the pathconf attributes are mandatory to implement */
3508 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3509 memset(pathconf
, 0, sizeof(*pathconf
));
3513 nfs_fattr_init(pathconf
->fattr
);
3514 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3517 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3518 struct nfs_pathconf
*pathconf
)
3520 struct nfs4_exception exception
= { };
3524 err
= nfs4_handle_exception(server
,
3525 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3527 } while (exception
.retry
);
3531 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3533 nfs_invalidate_atime(data
->header
->inode
);
3536 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3538 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3540 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3541 rpc_restart_call_prepare(task
);
3545 __nfs4_read_done_cb(data
);
3546 if (task
->tk_status
> 0)
3547 renew_lease(server
, data
->timestamp
);
3551 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3554 dprintk("--> %s\n", __func__
);
3556 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3559 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3560 nfs4_read_done_cb(task
, data
);
3563 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3565 data
->timestamp
= jiffies
;
3566 data
->read_done_cb
= nfs4_read_done_cb
;
3567 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3568 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3571 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3573 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3574 &data
->args
.seq_args
,
3578 rpc_call_start(task
);
3581 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3583 struct inode
*inode
= data
->header
->inode
;
3585 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3586 rpc_restart_call_prepare(task
);
3589 if (task
->tk_status
>= 0) {
3590 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3591 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3596 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3598 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3600 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3601 nfs4_write_done_cb(task
, data
);
3605 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3607 const struct nfs_pgio_header
*hdr
= data
->header
;
3609 /* Don't request attributes for pNFS or O_DIRECT writes */
3610 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3612 /* Otherwise, request attributes if and only if we don't hold
3615 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3618 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3620 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3622 if (!nfs4_write_need_cache_consistency_data(data
)) {
3623 data
->args
.bitmask
= NULL
;
3624 data
->res
.fattr
= NULL
;
3626 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3628 if (!data
->write_done_cb
)
3629 data
->write_done_cb
= nfs4_write_done_cb
;
3630 data
->res
.server
= server
;
3631 data
->timestamp
= jiffies
;
3633 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3634 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3637 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3639 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3640 &data
->args
.seq_args
,
3644 rpc_call_start(task
);
3647 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3649 if (nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3650 &data
->args
.seq_args
,
3654 rpc_call_start(task
);
3657 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3659 struct inode
*inode
= data
->inode
;
3661 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3662 rpc_restart_call_prepare(task
);
3668 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3670 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3672 return data
->commit_done_cb(task
, data
);
3675 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3677 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3679 if (data
->commit_done_cb
== NULL
)
3680 data
->commit_done_cb
= nfs4_commit_done_cb
;
3681 data
->res
.server
= server
;
3682 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3683 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3686 struct nfs4_renewdata
{
3687 struct nfs_client
*client
;
3688 unsigned long timestamp
;
3692 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3693 * standalone procedure for queueing an asynchronous RENEW.
3695 static void nfs4_renew_release(void *calldata
)
3697 struct nfs4_renewdata
*data
= calldata
;
3698 struct nfs_client
*clp
= data
->client
;
3700 if (atomic_read(&clp
->cl_count
) > 1)
3701 nfs4_schedule_state_renewal(clp
);
3702 nfs_put_client(clp
);
3706 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3708 struct nfs4_renewdata
*data
= calldata
;
3709 struct nfs_client
*clp
= data
->client
;
3710 unsigned long timestamp
= data
->timestamp
;
3712 if (task
->tk_status
< 0) {
3713 /* Unless we're shutting down, schedule state recovery! */
3714 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3716 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3717 nfs4_schedule_lease_recovery(clp
);
3720 nfs4_schedule_path_down_recovery(clp
);
3722 do_renew_lease(clp
, timestamp
);
3725 static const struct rpc_call_ops nfs4_renew_ops
= {
3726 .rpc_call_done
= nfs4_renew_done
,
3727 .rpc_release
= nfs4_renew_release
,
3730 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3732 struct rpc_message msg
= {
3733 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3737 struct nfs4_renewdata
*data
;
3739 if (renew_flags
== 0)
3741 if (!atomic_inc_not_zero(&clp
->cl_count
))
3743 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3747 data
->timestamp
= jiffies
;
3748 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3749 &nfs4_renew_ops
, data
);
3752 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3754 struct rpc_message msg
= {
3755 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3759 unsigned long now
= jiffies
;
3762 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3765 do_renew_lease(clp
, now
);
3769 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3771 return (server
->caps
& NFS_CAP_ACLS
)
3772 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3773 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3776 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3777 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3780 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3782 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3783 struct page
**pages
, unsigned int *pgbase
)
3785 struct page
*newpage
, **spages
;
3791 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3792 newpage
= alloc_page(GFP_KERNEL
);
3794 if (newpage
== NULL
)
3796 memcpy(page_address(newpage
), buf
, len
);
3801 } while (buflen
!= 0);
3807 __free_page(spages
[rc
-1]);
3811 struct nfs4_cached_acl
{
3817 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3819 struct nfs_inode
*nfsi
= NFS_I(inode
);
3821 spin_lock(&inode
->i_lock
);
3822 kfree(nfsi
->nfs4_acl
);
3823 nfsi
->nfs4_acl
= acl
;
3824 spin_unlock(&inode
->i_lock
);
3827 static void nfs4_zap_acl_attr(struct inode
*inode
)
3829 nfs4_set_cached_acl(inode
, NULL
);
3832 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3834 struct nfs_inode
*nfsi
= NFS_I(inode
);
3835 struct nfs4_cached_acl
*acl
;
3838 spin_lock(&inode
->i_lock
);
3839 acl
= nfsi
->nfs4_acl
;
3842 if (buf
== NULL
) /* user is just asking for length */
3844 if (acl
->cached
== 0)
3846 ret
= -ERANGE
; /* see getxattr(2) man page */
3847 if (acl
->len
> buflen
)
3849 memcpy(buf
, acl
->data
, acl
->len
);
3853 spin_unlock(&inode
->i_lock
);
3857 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3859 struct nfs4_cached_acl
*acl
;
3860 size_t buflen
= sizeof(*acl
) + acl_len
;
3862 if (buflen
<= PAGE_SIZE
) {
3863 acl
= kmalloc(buflen
, GFP_KERNEL
);
3867 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3869 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3876 nfs4_set_cached_acl(inode
, acl
);
3880 * The getxattr API returns the required buffer length when called with a
3881 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3882 * the required buf. On a NULL buf, we send a page of data to the server
3883 * guessing that the ACL request can be serviced by a page. If so, we cache
3884 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3885 * the cache. If not so, we throw away the page, and cache the required
3886 * length. The next getxattr call will then produce another round trip to
3887 * the server, this time with the input buf of the required size.
3889 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3891 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3892 struct nfs_getaclargs args
= {
3893 .fh
= NFS_FH(inode
),
3897 struct nfs_getaclres res
= {
3900 struct rpc_message msg
= {
3901 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3905 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3906 int ret
= -ENOMEM
, i
;
3908 /* As long as we're doing a round trip to the server anyway,
3909 * let's be prepared for a page of acl data. */
3912 if (npages
> ARRAY_SIZE(pages
))
3915 for (i
= 0; i
< npages
; i
++) {
3916 pages
[i
] = alloc_page(GFP_KERNEL
);
3921 /* for decoding across pages */
3922 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3923 if (!res
.acl_scratch
)
3926 args
.acl_len
= npages
* PAGE_SIZE
;
3927 args
.acl_pgbase
= 0;
3929 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3930 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3931 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3932 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3936 /* Handle the case where the passed-in buffer is too short */
3937 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
3938 /* Did the user only issue a request for the acl length? */
3944 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
3946 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
3950 for (i
= 0; i
< npages
; i
++)
3952 __free_page(pages
[i
]);
3953 if (res
.acl_scratch
)
3954 __free_page(res
.acl_scratch
);
3958 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3960 struct nfs4_exception exception
= { };
3963 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3966 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3967 } while (exception
.retry
);
3971 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3973 struct nfs_server
*server
= NFS_SERVER(inode
);
3976 if (!nfs4_server_supports_acls(server
))
3978 ret
= nfs_revalidate_inode(server
, inode
);
3981 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3982 nfs_zap_acl_cache(inode
);
3983 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3985 /* -ENOENT is returned if there is no ACL or if there is an ACL
3986 * but no cached acl data, just the acl length */
3988 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3991 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3993 struct nfs_server
*server
= NFS_SERVER(inode
);
3994 struct page
*pages
[NFS4ACL_MAXPAGES
];
3995 struct nfs_setaclargs arg
= {
3996 .fh
= NFS_FH(inode
),
4000 struct nfs_setaclres res
;
4001 struct rpc_message msg
= {
4002 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4006 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4009 if (!nfs4_server_supports_acls(server
))
4011 if (npages
> ARRAY_SIZE(pages
))
4013 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4016 nfs4_inode_return_delegation(inode
);
4017 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4020 * Free each page after tx, so the only ref left is
4021 * held by the network stack
4024 put_page(pages
[i
-1]);
4027 * Acl update can result in inode attribute update.
4028 * so mark the attribute cache invalid.
4030 spin_lock(&inode
->i_lock
);
4031 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4032 spin_unlock(&inode
->i_lock
);
4033 nfs_access_zap_cache(inode
);
4034 nfs_zap_acl_cache(inode
);
4038 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4040 struct nfs4_exception exception
= { };
4043 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4044 __nfs4_proc_set_acl(inode
, buf
, buflen
),
4046 } while (exception
.retry
);
4051 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4053 struct nfs_client
*clp
= server
->nfs_client
;
4055 if (task
->tk_status
>= 0)
4057 switch(task
->tk_status
) {
4058 case -NFS4ERR_DELEG_REVOKED
:
4059 case -NFS4ERR_ADMIN_REVOKED
:
4060 case -NFS4ERR_BAD_STATEID
:
4063 nfs_remove_bad_delegation(state
->inode
);
4064 case -NFS4ERR_OPENMODE
:
4067 nfs4_schedule_stateid_recovery(server
, state
);
4068 goto wait_on_recovery
;
4069 case -NFS4ERR_EXPIRED
:
4071 nfs4_schedule_stateid_recovery(server
, state
);
4072 case -NFS4ERR_STALE_STATEID
:
4073 case -NFS4ERR_STALE_CLIENTID
:
4074 nfs4_schedule_lease_recovery(clp
);
4075 goto wait_on_recovery
;
4076 #if defined(CONFIG_NFS_V4_1)
4077 case -NFS4ERR_BADSESSION
:
4078 case -NFS4ERR_BADSLOT
:
4079 case -NFS4ERR_BAD_HIGH_SLOT
:
4080 case -NFS4ERR_DEADSESSION
:
4081 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4082 case -NFS4ERR_SEQ_FALSE_RETRY
:
4083 case -NFS4ERR_SEQ_MISORDERED
:
4084 dprintk("%s ERROR %d, Reset session\n", __func__
,
4086 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4087 task
->tk_status
= 0;
4089 #endif /* CONFIG_NFS_V4_1 */
4090 case -NFS4ERR_DELAY
:
4091 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4092 case -NFS4ERR_GRACE
:
4094 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4095 task
->tk_status
= 0;
4097 case -NFS4ERR_RETRY_UNCACHED_REP
:
4098 case -NFS4ERR_OLD_STATEID
:
4099 task
->tk_status
= 0;
4102 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4105 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4106 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4107 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4108 task
->tk_status
= 0;
4112 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4113 nfs4_verifier
*bootverf
)
4117 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4118 /* An impossible timestamp guarantees this value
4119 * will never match a generated boot time. */
4121 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4123 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4124 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4125 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4127 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4131 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4132 char *buf
, size_t len
)
4134 unsigned int result
;
4137 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4139 rpc_peeraddr2str(clp
->cl_rpcclient
,
4141 rpc_peeraddr2str(clp
->cl_rpcclient
,
4142 RPC_DISPLAY_PROTO
));
4148 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4149 char *buf
, size_t len
)
4151 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4153 if (nfs4_client_id_uniquifier
[0] != '\0')
4154 nodename
= nfs4_client_id_uniquifier
;
4155 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4156 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4161 * nfs4_proc_setclientid - Negotiate client ID
4162 * @clp: state data structure
4163 * @program: RPC program for NFSv4 callback service
4164 * @port: IP port number for NFS4 callback service
4165 * @cred: RPC credential to use for this call
4166 * @res: where to place the result
4168 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4170 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4171 unsigned short port
, struct rpc_cred
*cred
,
4172 struct nfs4_setclientid_res
*res
)
4174 nfs4_verifier sc_verifier
;
4175 struct nfs4_setclientid setclientid
= {
4176 .sc_verifier
= &sc_verifier
,
4178 .sc_cb_ident
= clp
->cl_cb_ident
,
4180 struct rpc_message msg
= {
4181 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4182 .rpc_argp
= &setclientid
,
4188 /* nfs_client_id4 */
4189 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4190 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4191 setclientid
.sc_name_len
=
4192 nfs4_init_uniform_client_string(clp
,
4193 setclientid
.sc_name
,
4194 sizeof(setclientid
.sc_name
));
4196 setclientid
.sc_name_len
=
4197 nfs4_init_nonuniform_client_string(clp
,
4198 setclientid
.sc_name
,
4199 sizeof(setclientid
.sc_name
));
4202 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4203 sizeof(setclientid
.sc_netid
),
4204 rpc_peeraddr2str(clp
->cl_rpcclient
,
4205 RPC_DISPLAY_NETID
));
4207 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4208 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4209 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4211 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4212 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4213 setclientid
.sc_name_len
, setclientid
.sc_name
);
4214 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4215 dprintk("NFS reply setclientid: %d\n", status
);
4220 * nfs4_proc_setclientid_confirm - Confirm client ID
4221 * @clp: state data structure
4222 * @res: result of a previous SETCLIENTID
4223 * @cred: RPC credential to use for this call
4225 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4227 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4228 struct nfs4_setclientid_res
*arg
,
4229 struct rpc_cred
*cred
)
4231 struct nfs_fsinfo fsinfo
;
4232 struct rpc_message msg
= {
4233 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4235 .rpc_resp
= &fsinfo
,
4241 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4242 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4245 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4247 spin_lock(&clp
->cl_lock
);
4248 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4249 clp
->cl_last_renewal
= now
;
4250 spin_unlock(&clp
->cl_lock
);
4252 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4256 struct nfs4_delegreturndata
{
4257 struct nfs4_delegreturnargs args
;
4258 struct nfs4_delegreturnres res
;
4260 nfs4_stateid stateid
;
4261 unsigned long timestamp
;
4262 struct nfs_fattr fattr
;
4266 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4268 struct nfs4_delegreturndata
*data
= calldata
;
4270 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4273 switch (task
->tk_status
) {
4274 case -NFS4ERR_STALE_STATEID
:
4275 case -NFS4ERR_EXPIRED
:
4277 renew_lease(data
->res
.server
, data
->timestamp
);
4280 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4282 rpc_restart_call_prepare(task
);
4286 data
->rpc_status
= task
->tk_status
;
4289 static void nfs4_delegreturn_release(void *calldata
)
4294 #if defined(CONFIG_NFS_V4_1)
4295 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4297 struct nfs4_delegreturndata
*d_data
;
4299 d_data
= (struct nfs4_delegreturndata
*)data
;
4301 if (nfs4_setup_sequence(d_data
->res
.server
,
4302 &d_data
->args
.seq_args
,
4303 &d_data
->res
.seq_res
, task
))
4305 rpc_call_start(task
);
4307 #endif /* CONFIG_NFS_V4_1 */
4309 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4310 #if defined(CONFIG_NFS_V4_1)
4311 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4312 #endif /* CONFIG_NFS_V4_1 */
4313 .rpc_call_done
= nfs4_delegreturn_done
,
4314 .rpc_release
= nfs4_delegreturn_release
,
4317 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4319 struct nfs4_delegreturndata
*data
;
4320 struct nfs_server
*server
= NFS_SERVER(inode
);
4321 struct rpc_task
*task
;
4322 struct rpc_message msg
= {
4323 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4326 struct rpc_task_setup task_setup_data
= {
4327 .rpc_client
= server
->client
,
4328 .rpc_message
= &msg
,
4329 .callback_ops
= &nfs4_delegreturn_ops
,
4330 .flags
= RPC_TASK_ASYNC
,
4334 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4337 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4338 data
->args
.fhandle
= &data
->fh
;
4339 data
->args
.stateid
= &data
->stateid
;
4340 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4341 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4342 nfs4_stateid_copy(&data
->stateid
, stateid
);
4343 data
->res
.fattr
= &data
->fattr
;
4344 data
->res
.server
= server
;
4345 nfs_fattr_init(data
->res
.fattr
);
4346 data
->timestamp
= jiffies
;
4347 data
->rpc_status
= 0;
4349 task_setup_data
.callback_data
= data
;
4350 msg
.rpc_argp
= &data
->args
;
4351 msg
.rpc_resp
= &data
->res
;
4352 task
= rpc_run_task(&task_setup_data
);
4354 return PTR_ERR(task
);
4357 status
= nfs4_wait_for_completion_rpc_task(task
);
4360 status
= data
->rpc_status
;
4362 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4364 nfs_refresh_inode(inode
, &data
->fattr
);
4370 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4372 struct nfs_server
*server
= NFS_SERVER(inode
);
4373 struct nfs4_exception exception
= { };
4376 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4378 case -NFS4ERR_STALE_STATEID
:
4379 case -NFS4ERR_EXPIRED
:
4383 err
= nfs4_handle_exception(server
, err
, &exception
);
4384 } while (exception
.retry
);
4388 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4389 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4392 * sleep, with exponential backoff, and retry the LOCK operation.
4394 static unsigned long
4395 nfs4_set_lock_task_retry(unsigned long timeout
)
4397 freezable_schedule_timeout_killable(timeout
);
4399 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4400 return NFS4_LOCK_MAXTIMEOUT
;
4404 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4406 struct inode
*inode
= state
->inode
;
4407 struct nfs_server
*server
= NFS_SERVER(inode
);
4408 struct nfs_client
*clp
= server
->nfs_client
;
4409 struct nfs_lockt_args arg
= {
4410 .fh
= NFS_FH(inode
),
4413 struct nfs_lockt_res res
= {
4416 struct rpc_message msg
= {
4417 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4420 .rpc_cred
= state
->owner
->so_cred
,
4422 struct nfs4_lock_state
*lsp
;
4425 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4426 status
= nfs4_set_lock_state(state
, request
);
4429 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4430 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4431 arg
.lock_owner
.s_dev
= server
->s_dev
;
4432 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4435 request
->fl_type
= F_UNLCK
;
4437 case -NFS4ERR_DENIED
:
4440 request
->fl_ops
->fl_release_private(request
);
4445 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4447 struct nfs4_exception exception
= { };
4451 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4452 _nfs4_proc_getlk(state
, cmd
, request
),
4454 } while (exception
.retry
);
4458 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4461 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4463 res
= posix_lock_file_wait(file
, fl
);
4466 res
= flock_lock_file_wait(file
, fl
);
4474 struct nfs4_unlockdata
{
4475 struct nfs_locku_args arg
;
4476 struct nfs_locku_res res
;
4477 struct nfs4_lock_state
*lsp
;
4478 struct nfs_open_context
*ctx
;
4479 struct file_lock fl
;
4480 const struct nfs_server
*server
;
4481 unsigned long timestamp
;
4484 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4485 struct nfs_open_context
*ctx
,
4486 struct nfs4_lock_state
*lsp
,
4487 struct nfs_seqid
*seqid
)
4489 struct nfs4_unlockdata
*p
;
4490 struct inode
*inode
= lsp
->ls_state
->inode
;
4492 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4495 p
->arg
.fh
= NFS_FH(inode
);
4497 p
->arg
.seqid
= seqid
;
4498 p
->res
.seqid
= seqid
;
4499 p
->arg
.stateid
= &lsp
->ls_stateid
;
4501 atomic_inc(&lsp
->ls_count
);
4502 /* Ensure we don't close file until we're done freeing locks! */
4503 p
->ctx
= get_nfs_open_context(ctx
);
4504 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4505 p
->server
= NFS_SERVER(inode
);
4509 static void nfs4_locku_release_calldata(void *data
)
4511 struct nfs4_unlockdata
*calldata
= data
;
4512 nfs_free_seqid(calldata
->arg
.seqid
);
4513 nfs4_put_lock_state(calldata
->lsp
);
4514 put_nfs_open_context(calldata
->ctx
);
4518 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4520 struct nfs4_unlockdata
*calldata
= data
;
4522 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4524 switch (task
->tk_status
) {
4526 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4527 &calldata
->res
.stateid
);
4528 renew_lease(calldata
->server
, calldata
->timestamp
);
4530 case -NFS4ERR_BAD_STATEID
:
4531 case -NFS4ERR_OLD_STATEID
:
4532 case -NFS4ERR_STALE_STATEID
:
4533 case -NFS4ERR_EXPIRED
:
4536 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4537 rpc_restart_call_prepare(task
);
4539 nfs_release_seqid(calldata
->arg
.seqid
);
4542 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4544 struct nfs4_unlockdata
*calldata
= data
;
4546 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4548 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4549 /* Note: exit _without_ running nfs4_locku_done */
4550 task
->tk_action
= NULL
;
4553 calldata
->timestamp
= jiffies
;
4554 if (nfs4_setup_sequence(calldata
->server
,
4555 &calldata
->arg
.seq_args
,
4556 &calldata
->res
.seq_res
,
4558 nfs_release_seqid(calldata
->arg
.seqid
);
4560 rpc_call_start(task
);
4563 static const struct rpc_call_ops nfs4_locku_ops
= {
4564 .rpc_call_prepare
= nfs4_locku_prepare
,
4565 .rpc_call_done
= nfs4_locku_done
,
4566 .rpc_release
= nfs4_locku_release_calldata
,
4569 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4570 struct nfs_open_context
*ctx
,
4571 struct nfs4_lock_state
*lsp
,
4572 struct nfs_seqid
*seqid
)
4574 struct nfs4_unlockdata
*data
;
4575 struct rpc_message msg
= {
4576 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4577 .rpc_cred
= ctx
->cred
,
4579 struct rpc_task_setup task_setup_data
= {
4580 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4581 .rpc_message
= &msg
,
4582 .callback_ops
= &nfs4_locku_ops
,
4583 .workqueue
= nfsiod_workqueue
,
4584 .flags
= RPC_TASK_ASYNC
,
4587 /* Ensure this is an unlock - when canceling a lock, the
4588 * canceled lock is passed in, and it won't be an unlock.
4590 fl
->fl_type
= F_UNLCK
;
4592 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4594 nfs_free_seqid(seqid
);
4595 return ERR_PTR(-ENOMEM
);
4598 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4599 msg
.rpc_argp
= &data
->arg
;
4600 msg
.rpc_resp
= &data
->res
;
4601 task_setup_data
.callback_data
= data
;
4602 return rpc_run_task(&task_setup_data
);
4605 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4607 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4608 struct nfs_seqid
*seqid
;
4609 struct nfs4_lock_state
*lsp
;
4610 struct rpc_task
*task
;
4612 unsigned char fl_flags
= request
->fl_flags
;
4614 status
= nfs4_set_lock_state(state
, request
);
4615 /* Unlock _before_ we do the RPC call */
4616 request
->fl_flags
|= FL_EXISTS
;
4617 down_read(&nfsi
->rwsem
);
4618 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4619 up_read(&nfsi
->rwsem
);
4622 up_read(&nfsi
->rwsem
);
4625 /* Is this a delegated lock? */
4626 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4628 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4629 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4633 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4634 status
= PTR_ERR(task
);
4637 status
= nfs4_wait_for_completion_rpc_task(task
);
4640 request
->fl_flags
= fl_flags
;
4644 struct nfs4_lockdata
{
4645 struct nfs_lock_args arg
;
4646 struct nfs_lock_res res
;
4647 struct nfs4_lock_state
*lsp
;
4648 struct nfs_open_context
*ctx
;
4649 struct file_lock fl
;
4650 unsigned long timestamp
;
4653 struct nfs_server
*server
;
4656 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4657 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4660 struct nfs4_lockdata
*p
;
4661 struct inode
*inode
= lsp
->ls_state
->inode
;
4662 struct nfs_server
*server
= NFS_SERVER(inode
);
4664 p
= kzalloc(sizeof(*p
), gfp_mask
);
4668 p
->arg
.fh
= NFS_FH(inode
);
4670 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4671 if (p
->arg
.open_seqid
== NULL
)
4673 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4674 if (p
->arg
.lock_seqid
== NULL
)
4675 goto out_free_seqid
;
4676 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4677 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4678 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4679 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4680 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4683 atomic_inc(&lsp
->ls_count
);
4684 p
->ctx
= get_nfs_open_context(ctx
);
4685 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4688 nfs_free_seqid(p
->arg
.open_seqid
);
4694 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4696 struct nfs4_lockdata
*data
= calldata
;
4697 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4699 dprintk("%s: begin!\n", __func__
);
4700 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4702 /* Do we need to do an open_to_lock_owner? */
4703 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4704 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4705 goto out_release_lock_seqid
;
4706 data
->arg
.open_stateid
= &state
->stateid
;
4707 data
->arg
.new_lock_owner
= 1;
4708 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4710 data
->arg
.new_lock_owner
= 0;
4711 data
->timestamp
= jiffies
;
4712 if (nfs4_setup_sequence(data
->server
,
4713 &data
->arg
.seq_args
,
4716 rpc_call_start(task
);
4719 nfs_release_seqid(data
->arg
.open_seqid
);
4720 out_release_lock_seqid
:
4721 nfs_release_seqid(data
->arg
.lock_seqid
);
4722 dprintk("%s: done!, ret = %d\n", __func__
, task
->tk_status
);
4725 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4727 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4728 nfs4_lock_prepare(task
, calldata
);
4731 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4733 struct nfs4_lockdata
*data
= calldata
;
4735 dprintk("%s: begin!\n", __func__
);
4737 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4740 data
->rpc_status
= task
->tk_status
;
4741 if (data
->arg
.new_lock_owner
!= 0) {
4742 if (data
->rpc_status
== 0)
4743 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4747 if (data
->rpc_status
== 0) {
4748 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4749 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4750 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4753 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4756 static void nfs4_lock_release(void *calldata
)
4758 struct nfs4_lockdata
*data
= calldata
;
4760 dprintk("%s: begin!\n", __func__
);
4761 nfs_free_seqid(data
->arg
.open_seqid
);
4762 if (data
->cancelled
!= 0) {
4763 struct rpc_task
*task
;
4764 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4765 data
->arg
.lock_seqid
);
4767 rpc_put_task_async(task
);
4768 dprintk("%s: cancelling lock!\n", __func__
);
4770 nfs_free_seqid(data
->arg
.lock_seqid
);
4771 nfs4_put_lock_state(data
->lsp
);
4772 put_nfs_open_context(data
->ctx
);
4774 dprintk("%s: done!\n", __func__
);
4777 static const struct rpc_call_ops nfs4_lock_ops
= {
4778 .rpc_call_prepare
= nfs4_lock_prepare
,
4779 .rpc_call_done
= nfs4_lock_done
,
4780 .rpc_release
= nfs4_lock_release
,
4783 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4784 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4785 .rpc_call_done
= nfs4_lock_done
,
4786 .rpc_release
= nfs4_lock_release
,
4789 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4792 case -NFS4ERR_ADMIN_REVOKED
:
4793 case -NFS4ERR_BAD_STATEID
:
4794 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4795 if (new_lock_owner
!= 0 ||
4796 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4797 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4799 case -NFS4ERR_STALE_STATEID
:
4800 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4801 case -NFS4ERR_EXPIRED
:
4802 nfs4_schedule_lease_recovery(server
->nfs_client
);
4806 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4808 struct nfs4_lockdata
*data
;
4809 struct rpc_task
*task
;
4810 struct rpc_message msg
= {
4811 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4812 .rpc_cred
= state
->owner
->so_cred
,
4814 struct rpc_task_setup task_setup_data
= {
4815 .rpc_client
= NFS_CLIENT(state
->inode
),
4816 .rpc_message
= &msg
,
4817 .callback_ops
= &nfs4_lock_ops
,
4818 .workqueue
= nfsiod_workqueue
,
4819 .flags
= RPC_TASK_ASYNC
,
4823 dprintk("%s: begin!\n", __func__
);
4824 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4825 fl
->fl_u
.nfs4_fl
.owner
,
4826 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4830 data
->arg
.block
= 1;
4831 if (recovery_type
> NFS_LOCK_NEW
) {
4832 if (recovery_type
== NFS_LOCK_RECLAIM
)
4833 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4834 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4836 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4837 msg
.rpc_argp
= &data
->arg
;
4838 msg
.rpc_resp
= &data
->res
;
4839 task_setup_data
.callback_data
= data
;
4840 task
= rpc_run_task(&task_setup_data
);
4842 return PTR_ERR(task
);
4843 ret
= nfs4_wait_for_completion_rpc_task(task
);
4845 ret
= data
->rpc_status
;
4847 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4848 data
->arg
.new_lock_owner
, ret
);
4850 data
->cancelled
= 1;
4852 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4856 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4858 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4859 struct nfs4_exception exception
= {
4860 .inode
= state
->inode
,
4865 /* Cache the lock if possible... */
4866 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4868 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4869 if (err
!= -NFS4ERR_DELAY
)
4871 nfs4_handle_exception(server
, err
, &exception
);
4872 } while (exception
.retry
);
4876 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4878 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4879 struct nfs4_exception exception
= {
4880 .inode
= state
->inode
,
4884 err
= nfs4_set_lock_state(state
, request
);
4888 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4890 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4894 case -NFS4ERR_GRACE
:
4895 case -NFS4ERR_DELAY
:
4896 nfs4_handle_exception(server
, err
, &exception
);
4899 } while (exception
.retry
);
4904 #if defined(CONFIG_NFS_V4_1)
4906 * nfs41_check_expired_locks - possibly free a lock stateid
4908 * @state: NFSv4 state for an inode
4910 * Returns NFS_OK if recovery for this stateid is now finished.
4911 * Otherwise a negative NFS4ERR value is returned.
4913 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4915 int status
, ret
= -NFS4ERR_BAD_STATEID
;
4916 struct nfs4_lock_state
*lsp
;
4917 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4919 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4920 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
4921 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4922 if (status
!= NFS_OK
) {
4923 /* Free the stateid unless the server
4924 * informs us the stateid is unrecognized. */
4925 if (status
!= -NFS4ERR_BAD_STATEID
)
4926 nfs41_free_stateid(server
,
4928 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
4937 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4939 int status
= NFS_OK
;
4941 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4942 status
= nfs41_check_expired_locks(state
);
4943 if (status
!= NFS_OK
)
4944 status
= nfs4_lock_expired(state
, request
);
4949 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4951 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4952 unsigned char fl_flags
= request
->fl_flags
;
4953 int status
= -ENOLCK
;
4955 if ((fl_flags
& FL_POSIX
) &&
4956 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4958 /* Is this a delegated open? */
4959 status
= nfs4_set_lock_state(state
, request
);
4962 request
->fl_flags
|= FL_ACCESS
;
4963 status
= do_vfs_lock(request
->fl_file
, request
);
4966 down_read(&nfsi
->rwsem
);
4967 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4968 /* Yes: cache locks! */
4969 /* ...but avoid races with delegation recall... */
4970 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4971 status
= do_vfs_lock(request
->fl_file
, request
);
4974 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4977 /* Note: we always want to sleep here! */
4978 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4979 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4980 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4981 "manager!\n", __func__
);
4983 up_read(&nfsi
->rwsem
);
4985 request
->fl_flags
= fl_flags
;
4989 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4991 struct nfs4_exception exception
= {
4993 .inode
= state
->inode
,
4998 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4999 if (err
== -NFS4ERR_DENIED
)
5001 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5003 } while (exception
.retry
);
5008 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5010 struct nfs_open_context
*ctx
;
5011 struct nfs4_state
*state
;
5012 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5015 /* verify open state */
5016 ctx
= nfs_file_open_context(filp
);
5019 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5022 if (IS_GETLK(cmd
)) {
5024 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5028 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5031 if (request
->fl_type
== F_UNLCK
) {
5033 return nfs4_proc_unlck(state
, cmd
, request
);
5040 * Don't rely on the VFS having checked the file open mode,
5041 * since it won't do this for flock() locks.
5043 switch (request
->fl_type
) {
5045 if (!(filp
->f_mode
& FMODE_READ
))
5049 if (!(filp
->f_mode
& FMODE_WRITE
))
5054 status
= nfs4_proc_setlk(state
, cmd
, request
);
5055 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5057 timeout
= nfs4_set_lock_task_retry(timeout
);
5058 status
= -ERESTARTSYS
;
5061 } while(status
< 0);
5065 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
5067 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5068 struct nfs4_exception exception
= { };
5071 err
= nfs4_set_lock_state(state
, fl
);
5075 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5078 printk(KERN_ERR
"NFS: %s: unhandled error "
5079 "%d.\n", __func__
, err
);
5083 case -NFS4ERR_EXPIRED
:
5084 nfs4_schedule_stateid_recovery(server
, state
);
5085 case -NFS4ERR_STALE_CLIENTID
:
5086 case -NFS4ERR_STALE_STATEID
:
5087 nfs4_schedule_lease_recovery(server
->nfs_client
);
5089 case -NFS4ERR_BADSESSION
:
5090 case -NFS4ERR_BADSLOT
:
5091 case -NFS4ERR_BAD_HIGH_SLOT
:
5092 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
5093 case -NFS4ERR_DEADSESSION
:
5094 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
5098 * The show must go on: exit, but mark the
5099 * stateid as needing recovery.
5101 case -NFS4ERR_DELEG_REVOKED
:
5102 case -NFS4ERR_ADMIN_REVOKED
:
5103 case -NFS4ERR_BAD_STATEID
:
5104 case -NFS4ERR_OPENMODE
:
5105 nfs4_schedule_stateid_recovery(server
, state
);
5110 * User RPCSEC_GSS context has expired.
5111 * We cannot recover this stateid now, so
5112 * skip it and allow recovery thread to
5118 case -NFS4ERR_DENIED
:
5119 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
5122 case -NFS4ERR_DELAY
:
5125 err
= nfs4_handle_exception(server
, err
, &exception
);
5126 } while (exception
.retry
);
5131 struct nfs_release_lockowner_data
{
5132 struct nfs4_lock_state
*lsp
;
5133 struct nfs_server
*server
;
5134 struct nfs_release_lockowner_args args
;
5137 static void nfs4_release_lockowner_release(void *calldata
)
5139 struct nfs_release_lockowner_data
*data
= calldata
;
5140 nfs4_free_lock_state(data
->server
, data
->lsp
);
5144 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5145 .rpc_release
= nfs4_release_lockowner_release
,
5148 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
5150 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
5151 struct nfs_release_lockowner_data
*data
;
5152 struct rpc_message msg
= {
5153 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5156 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5158 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5162 data
->server
= server
;
5163 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5164 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5165 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5166 msg
.rpc_argp
= &data
->args
;
5167 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5171 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5173 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5174 const void *buf
, size_t buflen
,
5175 int flags
, int type
)
5177 if (strcmp(key
, "") != 0)
5180 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5183 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5184 void *buf
, size_t buflen
, int type
)
5186 if (strcmp(key
, "") != 0)
5189 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5192 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5193 size_t list_len
, const char *name
,
5194 size_t name_len
, int type
)
5196 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5198 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5201 if (list
&& len
<= list_len
)
5202 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5207 * nfs_fhget will use either the mounted_on_fileid or the fileid
5209 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5211 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5212 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5213 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5214 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5217 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5218 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5219 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5223 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5224 const struct qstr
*name
,
5225 struct nfs4_fs_locations
*fs_locations
,
5228 struct nfs_server
*server
= NFS_SERVER(dir
);
5230 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5232 struct nfs4_fs_locations_arg args
= {
5233 .dir_fh
= NFS_FH(dir
),
5238 struct nfs4_fs_locations_res res
= {
5239 .fs_locations
= fs_locations
,
5241 struct rpc_message msg
= {
5242 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5248 dprintk("%s: start\n", __func__
);
5250 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5251 * is not supported */
5252 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5253 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5255 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5257 nfs_fattr_init(&fs_locations
->fattr
);
5258 fs_locations
->server
= server
;
5259 fs_locations
->nlocations
= 0;
5260 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5261 dprintk("%s: returned status = %d\n", __func__
, status
);
5265 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5266 const struct qstr
*name
,
5267 struct nfs4_fs_locations
*fs_locations
,
5270 struct nfs4_exception exception
= { };
5273 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5274 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5276 } while (exception
.retry
);
5280 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5283 struct nfs4_secinfo_arg args
= {
5284 .dir_fh
= NFS_FH(dir
),
5287 struct nfs4_secinfo_res res
= {
5290 struct rpc_message msg
= {
5291 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5296 dprintk("NFS call secinfo %s\n", name
->name
);
5297 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5298 dprintk("NFS reply secinfo: %d\n", status
);
5302 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5303 struct nfs4_secinfo_flavors
*flavors
)
5305 struct nfs4_exception exception
= { };
5308 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5309 _nfs4_proc_secinfo(dir
, name
, flavors
),
5311 } while (exception
.retry
);
5315 #ifdef CONFIG_NFS_V4_1
5317 * Check the exchange flags returned by the server for invalid flags, having
5318 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5321 static int nfs4_check_cl_exchange_flags(u32 flags
)
5323 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5325 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5326 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5328 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5332 return -NFS4ERR_INVAL
;
5336 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5337 struct nfs41_server_scope
*b
)
5339 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5340 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5347 * nfs4_proc_bind_conn_to_session()
5349 * The 4.1 client currently uses the same TCP connection for the
5350 * fore and backchannel.
5352 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5355 struct nfs41_bind_conn_to_session_res res
;
5356 struct rpc_message msg
= {
5358 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5364 dprintk("--> %s\n", __func__
);
5366 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5367 if (unlikely(res
.session
== NULL
)) {
5372 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5374 if (memcmp(res
.session
->sess_id
.data
,
5375 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5376 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5380 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5381 dprintk("NFS: %s: Unexpected direction from server\n",
5386 if (res
.use_conn_in_rdma_mode
) {
5387 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5396 dprintk("<-- %s status= %d\n", __func__
, status
);
5401 * nfs4_proc_exchange_id()
5403 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5405 * Since the clientid has expired, all compounds using sessions
5406 * associated with the stale clientid will be returning
5407 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5408 * be in some phase of session reset.
5410 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5412 nfs4_verifier verifier
;
5413 struct nfs41_exchange_id_args args
= {
5414 .verifier
= &verifier
,
5416 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5418 struct nfs41_exchange_id_res res
= {
5422 struct rpc_message msg
= {
5423 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5429 nfs4_init_boot_verifier(clp
, &verifier
);
5430 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5432 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5433 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5434 args
.id_len
, args
.id
);
5436 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5438 if (unlikely(res
.server_owner
== NULL
)) {
5443 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5445 if (unlikely(res
.server_scope
== NULL
)) {
5447 goto out_server_owner
;
5450 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5451 if (unlikely(res
.impl_id
== NULL
)) {
5453 goto out_server_scope
;
5456 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5458 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5461 clp
->cl_clientid
= res
.clientid
;
5462 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5463 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5464 clp
->cl_seqid
= res
.seqid
;
5466 kfree(clp
->cl_serverowner
);
5467 clp
->cl_serverowner
= res
.server_owner
;
5468 res
.server_owner
= NULL
;
5470 /* use the most recent implementation id */
5471 kfree(clp
->cl_implid
);
5472 clp
->cl_implid
= res
.impl_id
;
5474 if (clp
->cl_serverscope
!= NULL
&&
5475 !nfs41_same_server_scope(clp
->cl_serverscope
,
5476 res
.server_scope
)) {
5477 dprintk("%s: server_scope mismatch detected\n",
5479 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5480 kfree(clp
->cl_serverscope
);
5481 clp
->cl_serverscope
= NULL
;
5484 if (clp
->cl_serverscope
== NULL
) {
5485 clp
->cl_serverscope
= res
.server_scope
;
5492 kfree(res
.server_owner
);
5494 kfree(res
.server_scope
);
5496 if (clp
->cl_implid
!= NULL
)
5497 dprintk("NFS reply exchange_id: Server Implementation ID: "
5498 "domain: %s, name: %s, date: %llu,%u\n",
5499 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5500 clp
->cl_implid
->date
.seconds
,
5501 clp
->cl_implid
->date
.nseconds
);
5502 dprintk("NFS reply exchange_id: %d\n", status
);
5506 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5507 struct rpc_cred
*cred
)
5509 struct rpc_message msg
= {
5510 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5516 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5518 dprintk("NFS: Got error %d from the server %s on "
5519 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5523 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5524 struct rpc_cred
*cred
)
5529 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5530 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5532 case -NFS4ERR_DELAY
:
5533 case -NFS4ERR_CLIENTID_BUSY
:
5543 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5545 struct rpc_cred
*cred
;
5548 if (clp
->cl_mvops
->minor_version
< 1)
5550 if (clp
->cl_exchange_flags
== 0)
5552 if (clp
->cl_preserve_clid
)
5554 cred
= nfs4_get_exchange_id_cred(clp
);
5555 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5560 case -NFS4ERR_STALE_CLIENTID
:
5561 clp
->cl_exchange_flags
= 0;
5567 struct nfs4_get_lease_time_data
{
5568 struct nfs4_get_lease_time_args
*args
;
5569 struct nfs4_get_lease_time_res
*res
;
5570 struct nfs_client
*clp
;
5573 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5577 struct nfs4_get_lease_time_data
*data
=
5578 (struct nfs4_get_lease_time_data
*)calldata
;
5580 dprintk("--> %s\n", __func__
);
5581 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5582 /* just setup sequence, do not trigger session recovery
5583 since we're invoked within one */
5584 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
5585 &data
->args
->la_seq_args
,
5586 &data
->res
->lr_seq_res
, task
);
5589 rpc_call_start(task
);
5590 dprintk("<-- %s\n", __func__
);
5594 * Called from nfs4_state_manager thread for session setup, so don't recover
5595 * from sequence operation or clientid errors.
5597 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5599 struct nfs4_get_lease_time_data
*data
=
5600 (struct nfs4_get_lease_time_data
*)calldata
;
5602 dprintk("--> %s\n", __func__
);
5603 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5605 switch (task
->tk_status
) {
5606 case -NFS4ERR_DELAY
:
5607 case -NFS4ERR_GRACE
:
5608 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5609 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5610 task
->tk_status
= 0;
5612 case -NFS4ERR_RETRY_UNCACHED_REP
:
5613 rpc_restart_call_prepare(task
);
5616 dprintk("<-- %s\n", __func__
);
5619 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5620 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5621 .rpc_call_done
= nfs4_get_lease_time_done
,
5624 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5626 struct rpc_task
*task
;
5627 struct nfs4_get_lease_time_args args
;
5628 struct nfs4_get_lease_time_res res
= {
5629 .lr_fsinfo
= fsinfo
,
5631 struct nfs4_get_lease_time_data data
= {
5636 struct rpc_message msg
= {
5637 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5641 struct rpc_task_setup task_setup
= {
5642 .rpc_client
= clp
->cl_rpcclient
,
5643 .rpc_message
= &msg
,
5644 .callback_ops
= &nfs4_get_lease_time_ops
,
5645 .callback_data
= &data
,
5646 .flags
= RPC_TASK_TIMEOUT
,
5650 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5651 dprintk("--> %s\n", __func__
);
5652 task
= rpc_run_task(&task_setup
);
5655 status
= PTR_ERR(task
);
5657 status
= task
->tk_status
;
5660 dprintk("<-- %s return %d\n", __func__
, status
);
5665 struct nfs4_slot
*nfs4_alloc_slots(struct nfs4_slot_table
*table
,
5666 u32 max_slots
, gfp_t gfp_flags
)
5668 struct nfs4_slot
*tbl
;
5671 tbl
= kmalloc_array(max_slots
, sizeof(*tbl
), gfp_flags
);
5673 for (i
= 0; i
< max_slots
; i
++) {
5674 tbl
[i
].table
= table
;
5681 static void nfs4_add_and_init_slots(struct nfs4_slot_table
*tbl
,
5682 struct nfs4_slot
*new,
5686 struct nfs4_slot
*old
= NULL
;
5689 spin_lock(&tbl
->slot_tbl_lock
);
5693 tbl
->max_slots
= max_slots
;
5695 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5696 for (i
= 0; i
< tbl
->max_slots
; i
++)
5697 tbl
->slots
[i
].seq_nr
= ivalue
;
5698 spin_unlock(&tbl
->slot_tbl_lock
);
5703 * (re)Initialise a slot table
5705 static int nfs4_realloc_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
5708 struct nfs4_slot
*new = NULL
;
5711 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
5712 max_reqs
, tbl
->max_slots
);
5714 /* Does the newly negotiated max_reqs match the existing slot table? */
5715 if (max_reqs
!= tbl
->max_slots
) {
5716 new = nfs4_alloc_slots(tbl
, max_reqs
, GFP_NOFS
);
5722 nfs4_add_and_init_slots(tbl
, new, max_reqs
, ivalue
);
5723 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5724 tbl
, tbl
->slots
, tbl
->max_slots
);
5726 dprintk("<-- %s: return %d\n", __func__
, ret
);
5730 /* Destroy the slot table */
5731 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
5733 if (session
->fc_slot_table
.slots
!= NULL
) {
5734 kfree(session
->fc_slot_table
.slots
);
5735 session
->fc_slot_table
.slots
= NULL
;
5737 if (session
->bc_slot_table
.slots
!= NULL
) {
5738 kfree(session
->bc_slot_table
.slots
);
5739 session
->bc_slot_table
.slots
= NULL
;
5745 * Initialize or reset the forechannel and backchannel tables
5747 static int nfs4_setup_session_slot_tables(struct nfs4_session
*ses
)
5749 struct nfs4_slot_table
*tbl
;
5752 dprintk("--> %s\n", __func__
);
5754 tbl
= &ses
->fc_slot_table
;
5756 status
= nfs4_realloc_slot_table(tbl
, ses
->fc_attrs
.max_reqs
, 1);
5757 if (status
) /* -ENOMEM */
5760 tbl
= &ses
->bc_slot_table
;
5762 status
= nfs4_realloc_slot_table(tbl
, ses
->bc_attrs
.max_reqs
, 0);
5763 if (status
&& tbl
->slots
== NULL
)
5764 /* Fore and back channel share a connection so get
5765 * both slot tables or neither */
5766 nfs4_destroy_slot_tables(ses
);
5770 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5772 struct nfs4_session
*session
;
5773 struct nfs4_slot_table
*tbl
;
5775 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5779 tbl
= &session
->fc_slot_table
;
5780 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5781 spin_lock_init(&tbl
->slot_tbl_lock
);
5782 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5783 init_completion(&tbl
->complete
);
5785 tbl
= &session
->bc_slot_table
;
5786 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5787 spin_lock_init(&tbl
->slot_tbl_lock
);
5788 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5789 init_completion(&tbl
->complete
);
5791 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5797 void nfs4_destroy_session(struct nfs4_session
*session
)
5799 struct rpc_xprt
*xprt
;
5800 struct rpc_cred
*cred
;
5802 cred
= nfs4_get_exchange_id_cred(session
->clp
);
5803 nfs4_proc_destroy_session(session
, cred
);
5808 xprt
= rcu_dereference(session
->clp
->cl_rpcclient
->cl_xprt
);
5810 dprintk("%s Destroy backchannel for xprt %p\n",
5812 xprt_destroy_backchannel(xprt
, NFS41_BC_MIN_CALLBACKS
);
5813 nfs4_destroy_slot_tables(session
);
5818 * Initialize the values to be used by the client in CREATE_SESSION
5819 * If nfs4_init_session set the fore channel request and response sizes,
5822 * Set the back channel max_resp_sz_cached to zero to force the client to
5823 * always set csa_cachethis to FALSE because the current implementation
5824 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5826 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5828 struct nfs4_session
*session
= args
->client
->cl_session
;
5829 unsigned int mxrqst_sz
= session
->fc_target_max_rqst_sz
,
5830 mxresp_sz
= session
->fc_target_max_resp_sz
;
5833 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5835 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5836 /* Fore channel attributes */
5837 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5838 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5839 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5840 args
->fc_attrs
.max_reqs
= max_session_slots
;
5842 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5843 "max_ops=%u max_reqs=%u\n",
5845 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5846 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5848 /* Back channel attributes */
5849 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5850 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5851 args
->bc_attrs
.max_resp_sz_cached
= 0;
5852 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5853 args
->bc_attrs
.max_reqs
= 1;
5855 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5856 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5858 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5859 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5860 args
->bc_attrs
.max_reqs
);
5863 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5865 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5866 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5868 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5871 * Our requested max_ops is the minimum we need; we're not
5872 * prepared to break up compounds into smaller pieces than that.
5873 * So, no point even trying to continue if the server won't
5876 if (rcvd
->max_ops
< sent
->max_ops
)
5878 if (rcvd
->max_reqs
== 0)
5880 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5881 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5885 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5887 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5888 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5890 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5892 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5894 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5896 /* These would render the backchannel useless: */
5897 if (rcvd
->max_ops
!= sent
->max_ops
)
5899 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5904 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5905 struct nfs4_session
*session
)
5909 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5912 return nfs4_verify_back_channel_attrs(args
, session
);
5915 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5916 struct rpc_cred
*cred
)
5918 struct nfs4_session
*session
= clp
->cl_session
;
5919 struct nfs41_create_session_args args
= {
5921 .cb_program
= NFS4_CALLBACK
,
5923 struct nfs41_create_session_res res
= {
5926 struct rpc_message msg
= {
5927 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5934 nfs4_init_channel_attrs(&args
);
5935 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5937 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5940 /* Verify the session's negotiated channel_attrs values */
5941 status
= nfs4_verify_channel_attrs(&args
, session
);
5942 /* Increment the clientid slot sequence id */
5950 * Issues a CREATE_SESSION operation to the server.
5951 * It is the responsibility of the caller to verify the session is
5952 * expired before calling this routine.
5954 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5958 struct nfs4_session
*session
= clp
->cl_session
;
5960 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5962 status
= _nfs4_proc_create_session(clp
, cred
);
5966 /* Init or reset the session slot tables */
5967 status
= nfs4_setup_session_slot_tables(session
);
5968 dprintk("slot table setup returned %d\n", status
);
5972 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5973 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5974 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5976 dprintk("<-- %s\n", __func__
);
5981 * Issue the over-the-wire RPC DESTROY_SESSION.
5982 * The caller must serialize access to this routine.
5984 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5985 struct rpc_cred
*cred
)
5987 struct rpc_message msg
= {
5988 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5989 .rpc_argp
= session
,
5994 dprintk("--> nfs4_proc_destroy_session\n");
5996 /* session is still being setup */
5997 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
6000 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6003 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
6004 "Session has been destroyed regardless...\n", status
);
6006 dprintk("<-- nfs4_proc_destroy_session\n");
6011 * With sessions, the client is not marked ready until after a
6012 * successful EXCHANGE_ID and CREATE_SESSION.
6014 * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate
6015 * other versions of NFS can be tried.
6017 static int nfs41_check_session_ready(struct nfs_client
*clp
)
6021 if (clp
->cl_cons_state
== NFS_CS_SESSION_INITING
) {
6022 ret
= nfs4_client_recover_expired_lease(clp
);
6026 if (clp
->cl_cons_state
< NFS_CS_READY
)
6027 return -EPROTONOSUPPORT
;
6032 int nfs4_init_session(struct nfs_server
*server
)
6034 struct nfs_client
*clp
= server
->nfs_client
;
6035 struct nfs4_session
*session
;
6036 unsigned int target_max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
;
6037 unsigned int target_max_resp_sz
= NFS_MAX_FILE_IO_SIZE
;
6039 if (!nfs4_has_session(clp
))
6042 if (server
->rsize
!= 0)
6043 target_max_resp_sz
= server
->rsize
;
6044 target_max_resp_sz
+= nfs41_maxread_overhead
;
6046 if (server
->wsize
!= 0)
6047 target_max_rqst_sz
= server
->wsize
;
6048 target_max_rqst_sz
+= nfs41_maxwrite_overhead
;
6050 session
= clp
->cl_session
;
6051 spin_lock(&clp
->cl_lock
);
6052 if (test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
)) {
6053 /* Initialise targets and channel attributes */
6054 session
->fc_target_max_rqst_sz
= target_max_rqst_sz
;
6055 session
->fc_attrs
.max_rqst_sz
= target_max_rqst_sz
;
6056 session
->fc_target_max_resp_sz
= target_max_resp_sz
;
6057 session
->fc_attrs
.max_resp_sz
= target_max_resp_sz
;
6059 /* Just adjust the targets */
6060 if (target_max_rqst_sz
> session
->fc_target_max_rqst_sz
) {
6061 session
->fc_target_max_rqst_sz
= target_max_rqst_sz
;
6062 set_bit(NFS4CLNT_SESSION_RESET
, &clp
->cl_state
);
6064 if (target_max_resp_sz
> session
->fc_target_max_resp_sz
) {
6065 session
->fc_target_max_resp_sz
= target_max_resp_sz
;
6066 set_bit(NFS4CLNT_SESSION_RESET
, &clp
->cl_state
);
6069 spin_unlock(&clp
->cl_lock
);
6071 if (test_bit(NFS4CLNT_SESSION_RESET
, &clp
->cl_state
))
6072 nfs4_schedule_lease_recovery(clp
);
6074 return nfs41_check_session_ready(clp
);
6077 int nfs4_init_ds_session(struct nfs_client
*clp
, unsigned long lease_time
)
6079 struct nfs4_session
*session
= clp
->cl_session
;
6082 spin_lock(&clp
->cl_lock
);
6083 if (test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
)) {
6085 * Do not set NFS_CS_CHECK_LEASE_TIME instead set the
6086 * DS lease to be equal to the MDS lease.
6088 clp
->cl_lease_time
= lease_time
;
6089 clp
->cl_last_renewal
= jiffies
;
6091 spin_unlock(&clp
->cl_lock
);
6093 ret
= nfs41_check_session_ready(clp
);
6096 /* Test for the DS role */
6097 if (!is_ds_client(clp
))
6101 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
6105 * Renew the cl_session lease.
6107 struct nfs4_sequence_data
{
6108 struct nfs_client
*clp
;
6109 struct nfs4_sequence_args args
;
6110 struct nfs4_sequence_res res
;
6113 static void nfs41_sequence_release(void *data
)
6115 struct nfs4_sequence_data
*calldata
= data
;
6116 struct nfs_client
*clp
= calldata
->clp
;
6118 if (atomic_read(&clp
->cl_count
) > 1)
6119 nfs4_schedule_state_renewal(clp
);
6120 nfs_put_client(clp
);
6124 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6126 switch(task
->tk_status
) {
6127 case -NFS4ERR_DELAY
:
6128 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6131 nfs4_schedule_lease_recovery(clp
);
6136 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
6138 struct nfs4_sequence_data
*calldata
= data
;
6139 struct nfs_client
*clp
= calldata
->clp
;
6141 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
6144 if (task
->tk_status
< 0) {
6145 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
6146 if (atomic_read(&clp
->cl_count
) == 1)
6149 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
6150 rpc_restart_call_prepare(task
);
6154 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
6156 dprintk("<-- %s\n", __func__
);
6159 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6161 struct nfs4_sequence_data
*calldata
= data
;
6162 struct nfs_client
*clp
= calldata
->clp
;
6163 struct nfs4_sequence_args
*args
;
6164 struct nfs4_sequence_res
*res
;
6166 args
= task
->tk_msg
.rpc_argp
;
6167 res
= task
->tk_msg
.rpc_resp
;
6169 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
))
6171 rpc_call_start(task
);
6174 static void nfs41_sequence_prepare_privileged(struct rpc_task
*task
, void *data
)
6176 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
6177 nfs41_sequence_prepare(task
, data
);
6180 static const struct rpc_call_ops nfs41_sequence_ops
= {
6181 .rpc_call_done
= nfs41_sequence_call_done
,
6182 .rpc_call_prepare
= nfs41_sequence_prepare
,
6183 .rpc_release
= nfs41_sequence_release
,
6186 static const struct rpc_call_ops nfs41_sequence_privileged_ops
= {
6187 .rpc_call_done
= nfs41_sequence_call_done
,
6188 .rpc_call_prepare
= nfs41_sequence_prepare_privileged
,
6189 .rpc_release
= nfs41_sequence_release
,
6192 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6193 const struct rpc_call_ops
*seq_ops
)
6195 struct nfs4_sequence_data
*calldata
;
6196 struct rpc_message msg
= {
6197 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6200 struct rpc_task_setup task_setup_data
= {
6201 .rpc_client
= clp
->cl_rpcclient
,
6202 .rpc_message
= &msg
,
6203 .callback_ops
= seq_ops
,
6204 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
6207 if (!atomic_inc_not_zero(&clp
->cl_count
))
6208 return ERR_PTR(-EIO
);
6209 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6210 if (calldata
== NULL
) {
6211 nfs_put_client(clp
);
6212 return ERR_PTR(-ENOMEM
);
6214 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6215 msg
.rpc_argp
= &calldata
->args
;
6216 msg
.rpc_resp
= &calldata
->res
;
6217 calldata
->clp
= clp
;
6218 task_setup_data
.callback_data
= calldata
;
6220 return rpc_run_task(&task_setup_data
);
6223 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6225 struct rpc_task
*task
;
6228 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6230 task
= _nfs41_proc_sequence(clp
, cred
, &nfs41_sequence_ops
);
6232 ret
= PTR_ERR(task
);
6234 rpc_put_task_async(task
);
6235 dprintk("<-- %s status=%d\n", __func__
, ret
);
6239 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6241 struct rpc_task
*task
;
6244 task
= _nfs41_proc_sequence(clp
, cred
, &nfs41_sequence_privileged_ops
);
6246 ret
= PTR_ERR(task
);
6249 ret
= rpc_wait_for_completion_task(task
);
6251 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6253 if (task
->tk_status
== 0)
6254 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6255 ret
= task
->tk_status
;
6259 dprintk("<-- %s status=%d\n", __func__
, ret
);
6263 struct nfs4_reclaim_complete_data
{
6264 struct nfs_client
*clp
;
6265 struct nfs41_reclaim_complete_args arg
;
6266 struct nfs41_reclaim_complete_res res
;
6269 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6271 struct nfs4_reclaim_complete_data
*calldata
= data
;
6273 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
6274 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
6275 &calldata
->arg
.seq_args
,
6276 &calldata
->res
.seq_res
, task
))
6279 rpc_call_start(task
);
6282 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6284 switch(task
->tk_status
) {
6286 case -NFS4ERR_COMPLETE_ALREADY
:
6287 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6289 case -NFS4ERR_DELAY
:
6290 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6292 case -NFS4ERR_RETRY_UNCACHED_REP
:
6295 nfs4_schedule_lease_recovery(clp
);
6300 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6302 struct nfs4_reclaim_complete_data
*calldata
= data
;
6303 struct nfs_client
*clp
= calldata
->clp
;
6304 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6306 dprintk("--> %s\n", __func__
);
6307 if (!nfs41_sequence_done(task
, res
))
6310 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6311 rpc_restart_call_prepare(task
);
6314 dprintk("<-- %s\n", __func__
);
6317 static void nfs4_free_reclaim_complete_data(void *data
)
6319 struct nfs4_reclaim_complete_data
*calldata
= data
;
6324 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6325 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6326 .rpc_call_done
= nfs4_reclaim_complete_done
,
6327 .rpc_release
= nfs4_free_reclaim_complete_data
,
6331 * Issue a global reclaim complete.
6333 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6335 struct nfs4_reclaim_complete_data
*calldata
;
6336 struct rpc_task
*task
;
6337 struct rpc_message msg
= {
6338 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6340 struct rpc_task_setup task_setup_data
= {
6341 .rpc_client
= clp
->cl_rpcclient
,
6342 .rpc_message
= &msg
,
6343 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6344 .flags
= RPC_TASK_ASYNC
,
6346 int status
= -ENOMEM
;
6348 dprintk("--> %s\n", __func__
);
6349 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6350 if (calldata
== NULL
)
6352 calldata
->clp
= clp
;
6353 calldata
->arg
.one_fs
= 0;
6355 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6356 msg
.rpc_argp
= &calldata
->arg
;
6357 msg
.rpc_resp
= &calldata
->res
;
6358 task_setup_data
.callback_data
= calldata
;
6359 task
= rpc_run_task(&task_setup_data
);
6361 status
= PTR_ERR(task
);
6364 status
= nfs4_wait_for_completion_rpc_task(task
);
6366 status
= task
->tk_status
;
6370 dprintk("<-- %s status=%d\n", __func__
, status
);
6375 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6377 struct nfs4_layoutget
*lgp
= calldata
;
6378 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6380 dprintk("--> %s\n", __func__
);
6381 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6382 * right now covering the LAYOUTGET we are about to send.
6383 * However, that is not so catastrophic, and there seems
6384 * to be no way to prevent it completely.
6386 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
6387 &lgp
->res
.seq_res
, task
))
6389 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6390 NFS_I(lgp
->args
.inode
)->layout
,
6391 lgp
->args
.ctx
->state
)) {
6392 rpc_exit(task
, NFS4_OK
);
6395 rpc_call_start(task
);
6398 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6400 struct nfs4_layoutget
*lgp
= calldata
;
6401 struct inode
*inode
= lgp
->args
.inode
;
6402 struct nfs_server
*server
= NFS_SERVER(inode
);
6403 struct pnfs_layout_hdr
*lo
;
6404 struct nfs4_state
*state
= NULL
;
6406 dprintk("--> %s\n", __func__
);
6408 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
6411 switch (task
->tk_status
) {
6414 case -NFS4ERR_LAYOUTTRYLATER
:
6415 case -NFS4ERR_RECALLCONFLICT
:
6416 task
->tk_status
= -NFS4ERR_DELAY
;
6418 case -NFS4ERR_EXPIRED
:
6419 case -NFS4ERR_BAD_STATEID
:
6420 spin_lock(&inode
->i_lock
);
6421 lo
= NFS_I(inode
)->layout
;
6422 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6423 spin_unlock(&inode
->i_lock
);
6424 /* If the open stateid was bad, then recover it. */
6425 state
= lgp
->args
.ctx
->state
;
6429 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6430 spin_unlock(&inode
->i_lock
);
6431 /* Mark the bad layout state as invalid, then
6432 * retry using the open stateid. */
6433 pnfs_free_lseg_list(&head
);
6436 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6437 rpc_restart_call_prepare(task
);
6439 dprintk("<-- %s\n", __func__
);
6442 static size_t max_response_pages(struct nfs_server
*server
)
6444 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6445 return nfs_page_array_len(0, max_resp_sz
);
6448 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6455 for (i
= 0; i
< size
; i
++) {
6458 __free_page(pages
[i
]);
6463 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6465 struct page
**pages
;
6468 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6470 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6474 for (i
= 0; i
< size
; i
++) {
6475 pages
[i
] = alloc_page(gfp_flags
);
6477 dprintk("%s: failed to allocate page\n", __func__
);
6478 nfs4_free_pages(pages
, size
);
6486 static void nfs4_layoutget_release(void *calldata
)
6488 struct nfs4_layoutget
*lgp
= calldata
;
6489 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6490 size_t max_pages
= max_response_pages(server
);
6492 dprintk("--> %s\n", __func__
);
6493 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6494 put_nfs_open_context(lgp
->args
.ctx
);
6496 dprintk("<-- %s\n", __func__
);
6499 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6500 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6501 .rpc_call_done
= nfs4_layoutget_done
,
6502 .rpc_release
= nfs4_layoutget_release
,
6505 struct pnfs_layout_segment
*
6506 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6508 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6509 size_t max_pages
= max_response_pages(server
);
6510 struct rpc_task
*task
;
6511 struct rpc_message msg
= {
6512 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6513 .rpc_argp
= &lgp
->args
,
6514 .rpc_resp
= &lgp
->res
,
6516 struct rpc_task_setup task_setup_data
= {
6517 .rpc_client
= server
->client
,
6518 .rpc_message
= &msg
,
6519 .callback_ops
= &nfs4_layoutget_call_ops
,
6520 .callback_data
= lgp
,
6521 .flags
= RPC_TASK_ASYNC
,
6523 struct pnfs_layout_segment
*lseg
= NULL
;
6526 dprintk("--> %s\n", __func__
);
6528 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6529 if (!lgp
->args
.layout
.pages
) {
6530 nfs4_layoutget_release(lgp
);
6531 return ERR_PTR(-ENOMEM
);
6533 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6535 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6536 lgp
->res
.seq_res
.sr_slot
= NULL
;
6537 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6538 task
= rpc_run_task(&task_setup_data
);
6540 return ERR_CAST(task
);
6541 status
= nfs4_wait_for_completion_rpc_task(task
);
6543 status
= task
->tk_status
;
6545 lseg
= pnfs_layout_process(lgp
);
6547 dprintk("<-- %s status=%d\n", __func__
, status
);
6549 return ERR_PTR(status
);
6554 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6556 struct nfs4_layoutreturn
*lrp
= calldata
;
6558 dprintk("--> %s\n", __func__
);
6559 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
6560 &lrp
->res
.seq_res
, task
))
6562 rpc_call_start(task
);
6565 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6567 struct nfs4_layoutreturn
*lrp
= calldata
;
6568 struct nfs_server
*server
;
6570 dprintk("--> %s\n", __func__
);
6572 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
6575 server
= NFS_SERVER(lrp
->args
.inode
);
6576 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6577 rpc_restart_call_prepare(task
);
6580 dprintk("<-- %s\n", __func__
);
6583 static void nfs4_layoutreturn_release(void *calldata
)
6585 struct nfs4_layoutreturn
*lrp
= calldata
;
6586 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6588 dprintk("--> %s\n", __func__
);
6589 spin_lock(&lo
->plh_inode
->i_lock
);
6590 if (lrp
->res
.lrs_present
)
6591 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6592 lo
->plh_block_lgets
--;
6593 spin_unlock(&lo
->plh_inode
->i_lock
);
6594 pnfs_put_layout_hdr(lrp
->args
.layout
);
6596 dprintk("<-- %s\n", __func__
);
6599 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6600 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6601 .rpc_call_done
= nfs4_layoutreturn_done
,
6602 .rpc_release
= nfs4_layoutreturn_release
,
6605 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6607 struct rpc_task
*task
;
6608 struct rpc_message msg
= {
6609 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6610 .rpc_argp
= &lrp
->args
,
6611 .rpc_resp
= &lrp
->res
,
6613 struct rpc_task_setup task_setup_data
= {
6614 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6615 .rpc_message
= &msg
,
6616 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6617 .callback_data
= lrp
,
6621 dprintk("--> %s\n", __func__
);
6622 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6623 task
= rpc_run_task(&task_setup_data
);
6625 return PTR_ERR(task
);
6626 status
= task
->tk_status
;
6627 dprintk("<-- %s status=%d\n", __func__
, status
);
6633 * Retrieve the list of Data Server devices from the MDS.
6635 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6636 const struct nfs_fh
*fh
,
6637 struct pnfs_devicelist
*devlist
)
6639 struct nfs4_getdevicelist_args args
= {
6641 .layoutclass
= server
->pnfs_curr_ld
->id
,
6643 struct nfs4_getdevicelist_res res
= {
6646 struct rpc_message msg
= {
6647 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6653 dprintk("--> %s\n", __func__
);
6654 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6656 dprintk("<-- %s status=%d\n", __func__
, status
);
6660 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6661 const struct nfs_fh
*fh
,
6662 struct pnfs_devicelist
*devlist
)
6664 struct nfs4_exception exception
= { };
6668 err
= nfs4_handle_exception(server
,
6669 _nfs4_getdevicelist(server
, fh
, devlist
),
6671 } while (exception
.retry
);
6673 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6674 err
, devlist
->num_devs
);
6678 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6681 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6683 struct nfs4_getdeviceinfo_args args
= {
6686 struct nfs4_getdeviceinfo_res res
= {
6689 struct rpc_message msg
= {
6690 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6696 dprintk("--> %s\n", __func__
);
6697 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6698 dprintk("<-- %s status=%d\n", __func__
, status
);
6703 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6705 struct nfs4_exception exception
= { };
6709 err
= nfs4_handle_exception(server
,
6710 _nfs4_proc_getdeviceinfo(server
, pdev
),
6712 } while (exception
.retry
);
6715 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6717 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6719 struct nfs4_layoutcommit_data
*data
= calldata
;
6720 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6722 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
6723 &data
->res
.seq_res
, task
))
6725 rpc_call_start(task
);
6729 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6731 struct nfs4_layoutcommit_data
*data
= calldata
;
6732 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6734 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6737 switch (task
->tk_status
) { /* Just ignore these failures */
6738 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6739 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6740 case -NFS4ERR_BADLAYOUT
: /* no layout */
6741 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6742 task
->tk_status
= 0;
6745 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6749 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6750 rpc_restart_call_prepare(task
);
6756 static void nfs4_layoutcommit_release(void *calldata
)
6758 struct nfs4_layoutcommit_data
*data
= calldata
;
6759 struct pnfs_layout_segment
*lseg
, *tmp
;
6760 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
6762 pnfs_cleanup_layoutcommit(data
);
6763 /* Matched by references in pnfs_set_layoutcommit */
6764 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
6765 list_del_init(&lseg
->pls_lc_list
);
6766 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
6768 pnfs_put_lseg(lseg
);
6771 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
6772 smp_mb__after_clear_bit();
6773 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
6775 put_rpccred(data
->cred
);
6779 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6780 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6781 .rpc_call_done
= nfs4_layoutcommit_done
,
6782 .rpc_release
= nfs4_layoutcommit_release
,
6786 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6788 struct rpc_message msg
= {
6789 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6790 .rpc_argp
= &data
->args
,
6791 .rpc_resp
= &data
->res
,
6792 .rpc_cred
= data
->cred
,
6794 struct rpc_task_setup task_setup_data
= {
6795 .task
= &data
->task
,
6796 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6797 .rpc_message
= &msg
,
6798 .callback_ops
= &nfs4_layoutcommit_ops
,
6799 .callback_data
= data
,
6800 .flags
= RPC_TASK_ASYNC
,
6802 struct rpc_task
*task
;
6805 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6806 "lbw: %llu inode %lu\n",
6807 data
->task
.tk_pid
, sync
,
6808 data
->args
.lastbytewritten
,
6809 data
->args
.inode
->i_ino
);
6811 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6812 task
= rpc_run_task(&task_setup_data
);
6814 return PTR_ERR(task
);
6817 status
= nfs4_wait_for_completion_rpc_task(task
);
6820 status
= task
->tk_status
;
6822 dprintk("%s: status %d\n", __func__
, status
);
6828 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6829 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6831 struct nfs41_secinfo_no_name_args args
= {
6832 .style
= SECINFO_STYLE_CURRENT_FH
,
6834 struct nfs4_secinfo_res res
= {
6837 struct rpc_message msg
= {
6838 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6842 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6846 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6847 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6849 struct nfs4_exception exception
= { };
6852 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6855 case -NFS4ERR_WRONGSEC
:
6856 case -NFS4ERR_NOTSUPP
:
6859 err
= nfs4_handle_exception(server
, err
, &exception
);
6861 } while (exception
.retry
);
6867 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6868 struct nfs_fsinfo
*info
)
6872 rpc_authflavor_t flavor
;
6873 struct nfs4_secinfo_flavors
*flavors
;
6875 page
= alloc_page(GFP_KERNEL
);
6881 flavors
= page_address(page
);
6882 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6885 * Fall back on "guess and check" method if
6886 * the server doesn't support SECINFO_NO_NAME
6888 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6889 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6895 flavor
= nfs_find_best_sec(flavors
);
6897 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6907 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6910 struct nfs41_test_stateid_args args
= {
6913 struct nfs41_test_stateid_res res
;
6914 struct rpc_message msg
= {
6915 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6920 dprintk("NFS call test_stateid %p\n", stateid
);
6921 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6922 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6923 if (status
!= NFS_OK
) {
6924 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6927 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6932 * nfs41_test_stateid - perform a TEST_STATEID operation
6934 * @server: server / transport on which to perform the operation
6935 * @stateid: state ID to test
6937 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6938 * Otherwise a negative NFS4ERR value is returned if the operation
6939 * failed or the state ID is not currently valid.
6941 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6943 struct nfs4_exception exception
= { };
6946 err
= _nfs41_test_stateid(server
, stateid
);
6947 if (err
!= -NFS4ERR_DELAY
)
6949 nfs4_handle_exception(server
, err
, &exception
);
6950 } while (exception
.retry
);
6954 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6956 struct nfs41_free_stateid_args args
= {
6959 struct nfs41_free_stateid_res res
;
6960 struct rpc_message msg
= {
6961 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6967 dprintk("NFS call free_stateid %p\n", stateid
);
6968 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6969 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6970 &args
.seq_args
, &res
.seq_res
, 1);
6971 dprintk("NFS reply free_stateid: %d\n", status
);
6976 * nfs41_free_stateid - perform a FREE_STATEID operation
6978 * @server: server / transport on which to perform the operation
6979 * @stateid: state ID to release
6981 * Returns NFS_OK if the server freed "stateid". Otherwise a
6982 * negative NFS4ERR value is returned.
6984 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6986 struct nfs4_exception exception
= { };
6989 err
= _nfs4_free_stateid(server
, stateid
);
6990 if (err
!= -NFS4ERR_DELAY
)
6992 nfs4_handle_exception(server
, err
, &exception
);
6993 } while (exception
.retry
);
6997 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6998 const nfs4_stateid
*s2
)
7000 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
7003 if (s1
->seqid
== s2
->seqid
)
7005 if (s1
->seqid
== 0 || s2
->seqid
== 0)
7011 #endif /* CONFIG_NFS_V4_1 */
7013 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
7014 const nfs4_stateid
*s2
)
7016 return nfs4_stateid_match(s1
, s2
);
7020 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
7021 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7022 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7023 .recover_open
= nfs4_open_reclaim
,
7024 .recover_lock
= nfs4_lock_reclaim
,
7025 .establish_clid
= nfs4_init_clientid
,
7026 .get_clid_cred
= nfs4_get_setclientid_cred
,
7027 .detect_trunking
= nfs40_discover_server_trunking
,
7030 #if defined(CONFIG_NFS_V4_1)
7031 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
7032 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7033 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7034 .recover_open
= nfs4_open_reclaim
,
7035 .recover_lock
= nfs4_lock_reclaim
,
7036 .establish_clid
= nfs41_init_clientid
,
7037 .get_clid_cred
= nfs4_get_exchange_id_cred
,
7038 .reclaim_complete
= nfs41_proc_reclaim_complete
,
7039 .detect_trunking
= nfs41_discover_server_trunking
,
7041 #endif /* CONFIG_NFS_V4_1 */
7043 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
7044 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7045 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7046 .recover_open
= nfs4_open_expired
,
7047 .recover_lock
= nfs4_lock_expired
,
7048 .establish_clid
= nfs4_init_clientid
,
7049 .get_clid_cred
= nfs4_get_setclientid_cred
,
7052 #if defined(CONFIG_NFS_V4_1)
7053 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
7054 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7055 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7056 .recover_open
= nfs41_open_expired
,
7057 .recover_lock
= nfs41_lock_expired
,
7058 .establish_clid
= nfs41_init_clientid
,
7059 .get_clid_cred
= nfs4_get_exchange_id_cred
,
7061 #endif /* CONFIG_NFS_V4_1 */
7063 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
7064 .sched_state_renewal
= nfs4_proc_async_renew
,
7065 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
7066 .renew_lease
= nfs4_proc_renew
,
7069 #if defined(CONFIG_NFS_V4_1)
7070 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
7071 .sched_state_renewal
= nfs41_proc_async_sequence
,
7072 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
7073 .renew_lease
= nfs4_proc_sequence
,
7077 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
7079 .call_sync
= _nfs4_call_sync
,
7080 .match_stateid
= nfs4_match_stateid
,
7081 .find_root_sec
= nfs4_find_root_sec
,
7082 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
7083 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
7084 .state_renewal_ops
= &nfs40_state_renewal_ops
,
7087 #if defined(CONFIG_NFS_V4_1)
7088 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
7090 .call_sync
= _nfs4_call_sync_session
,
7091 .match_stateid
= nfs41_match_stateid
,
7092 .find_root_sec
= nfs41_find_root_sec
,
7093 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7094 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7095 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7099 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
7100 [0] = &nfs_v4_0_minor_ops
,
7101 #if defined(CONFIG_NFS_V4_1)
7102 [1] = &nfs_v4_1_minor_ops
,
7106 const struct inode_operations nfs4_dir_inode_operations
= {
7107 .create
= nfs_create
,
7108 .lookup
= nfs_lookup
,
7109 .atomic_open
= nfs_atomic_open
,
7111 .unlink
= nfs_unlink
,
7112 .symlink
= nfs_symlink
,
7116 .rename
= nfs_rename
,
7117 .permission
= nfs_permission
,
7118 .getattr
= nfs_getattr
,
7119 .setattr
= nfs_setattr
,
7120 .getxattr
= generic_getxattr
,
7121 .setxattr
= generic_setxattr
,
7122 .listxattr
= generic_listxattr
,
7123 .removexattr
= generic_removexattr
,
7126 static const struct inode_operations nfs4_file_inode_operations
= {
7127 .permission
= nfs_permission
,
7128 .getattr
= nfs_getattr
,
7129 .setattr
= nfs_setattr
,
7130 .getxattr
= generic_getxattr
,
7131 .setxattr
= generic_setxattr
,
7132 .listxattr
= generic_listxattr
,
7133 .removexattr
= generic_removexattr
,
7136 const struct nfs_rpc_ops nfs_v4_clientops
= {
7137 .version
= 4, /* protocol version */
7138 .dentry_ops
= &nfs4_dentry_operations
,
7139 .dir_inode_ops
= &nfs4_dir_inode_operations
,
7140 .file_inode_ops
= &nfs4_file_inode_operations
,
7141 .file_ops
= &nfs4_file_operations
,
7142 .getroot
= nfs4_proc_get_root
,
7143 .submount
= nfs4_submount
,
7144 .try_mount
= nfs4_try_mount
,
7145 .getattr
= nfs4_proc_getattr
,
7146 .setattr
= nfs4_proc_setattr
,
7147 .lookup
= nfs4_proc_lookup
,
7148 .access
= nfs4_proc_access
,
7149 .readlink
= nfs4_proc_readlink
,
7150 .create
= nfs4_proc_create
,
7151 .remove
= nfs4_proc_remove
,
7152 .unlink_setup
= nfs4_proc_unlink_setup
,
7153 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
7154 .unlink_done
= nfs4_proc_unlink_done
,
7155 .rename
= nfs4_proc_rename
,
7156 .rename_setup
= nfs4_proc_rename_setup
,
7157 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
7158 .rename_done
= nfs4_proc_rename_done
,
7159 .link
= nfs4_proc_link
,
7160 .symlink
= nfs4_proc_symlink
,
7161 .mkdir
= nfs4_proc_mkdir
,
7162 .rmdir
= nfs4_proc_remove
,
7163 .readdir
= nfs4_proc_readdir
,
7164 .mknod
= nfs4_proc_mknod
,
7165 .statfs
= nfs4_proc_statfs
,
7166 .fsinfo
= nfs4_proc_fsinfo
,
7167 .pathconf
= nfs4_proc_pathconf
,
7168 .set_capabilities
= nfs4_server_capabilities
,
7169 .decode_dirent
= nfs4_decode_dirent
,
7170 .read_setup
= nfs4_proc_read_setup
,
7171 .read_pageio_init
= pnfs_pageio_init_read
,
7172 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
7173 .read_done
= nfs4_read_done
,
7174 .write_setup
= nfs4_proc_write_setup
,
7175 .write_pageio_init
= pnfs_pageio_init_write
,
7176 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
7177 .write_done
= nfs4_write_done
,
7178 .commit_setup
= nfs4_proc_commit_setup
,
7179 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
7180 .commit_done
= nfs4_commit_done
,
7181 .lock
= nfs4_proc_lock
,
7182 .clear_acl_cache
= nfs4_zap_acl_attr
,
7183 .close_context
= nfs4_close_context
,
7184 .open_context
= nfs4_atomic_open
,
7185 .have_delegation
= nfs4_have_delegation
,
7186 .return_delegation
= nfs4_inode_return_delegation
,
7187 .alloc_client
= nfs4_alloc_client
,
7188 .init_client
= nfs4_init_client
,
7189 .free_client
= nfs4_free_client
,
7190 .create_server
= nfs4_create_server
,
7191 .clone_server
= nfs_clone_server
,
7194 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7195 .prefix
= XATTR_NAME_NFSV4_ACL
,
7196 .list
= nfs4_xattr_list_nfs4_acl
,
7197 .get
= nfs4_xattr_get_nfs4_acl
,
7198 .set
= nfs4_xattr_set_nfs4_acl
,
7201 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7202 &nfs4_xattr_nfs4_acl_handler
,