4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/sunrpc/gss_api.h>
47 #include <linux/nfs.h>
48 #include <linux/nfs4.h>
49 #include <linux/nfs_fs.h>
50 #include <linux/nfs_page.h>
51 #include <linux/nfs_mount.h>
52 #include <linux/namei.h>
53 #include <linux/mount.h>
54 #include <linux/module.h>
55 #include <linux/nfs_idmap.h>
56 #include <linux/sunrpc/bc_xprt.h>
57 #include <linux/xattr.h>
58 #include <linux/utsname.h>
59 #include <linux/freezer.h>
62 #include "delegation.h"
69 #define NFSDBG_FACILITY NFSDBG_PROC
71 #define NFS4_POLL_RETRY_MIN (HZ/10)
72 #define NFS4_POLL_RETRY_MAX (15*HZ)
74 #define NFS4_MAX_LOOP_ON_RECOVER (10)
76 static unsigned short max_session_slots
= NFS4_DEF_SLOT_TABLE_SIZE
;
79 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
80 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
81 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
82 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
83 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
84 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*);
85 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
86 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
87 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
88 struct nfs4_state
*state
);
89 #ifdef CONFIG_NFS_V4_1
90 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*);
91 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*);
93 /* Prevent leaks of NFSv4 errors into userland */
94 static int nfs4_map_errors(int err
)
99 case -NFS4ERR_RESOURCE
:
101 case -NFS4ERR_WRONGSEC
:
103 case -NFS4ERR_BADOWNER
:
104 case -NFS4ERR_BADNAME
:
107 dprintk("%s could not handle NFSv4 error %d\n",
115 * This is our standard bitmap for GETATTR requests.
117 const u32 nfs4_fattr_bitmap
[2] = {
119 | FATTR4_WORD0_CHANGE
122 | FATTR4_WORD0_FILEID
,
124 | FATTR4_WORD1_NUMLINKS
126 | FATTR4_WORD1_OWNER_GROUP
127 | FATTR4_WORD1_RAWDEV
128 | FATTR4_WORD1_SPACE_USED
129 | FATTR4_WORD1_TIME_ACCESS
130 | FATTR4_WORD1_TIME_METADATA
131 | FATTR4_WORD1_TIME_MODIFY
134 const u32 nfs4_statfs_bitmap
[2] = {
135 FATTR4_WORD0_FILES_AVAIL
136 | FATTR4_WORD0_FILES_FREE
137 | FATTR4_WORD0_FILES_TOTAL
,
138 FATTR4_WORD1_SPACE_AVAIL
139 | FATTR4_WORD1_SPACE_FREE
140 | FATTR4_WORD1_SPACE_TOTAL
143 const u32 nfs4_pathconf_bitmap
[2] = {
145 | FATTR4_WORD0_MAXNAME
,
149 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
150 | FATTR4_WORD0_MAXREAD
151 | FATTR4_WORD0_MAXWRITE
152 | FATTR4_WORD0_LEASE_TIME
,
153 FATTR4_WORD1_TIME_DELTA
154 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
155 FATTR4_WORD2_LAYOUT_BLKSIZE
158 const u32 nfs4_fs_locations_bitmap
[2] = {
160 | FATTR4_WORD0_CHANGE
163 | FATTR4_WORD0_FILEID
164 | FATTR4_WORD0_FS_LOCATIONS
,
166 | FATTR4_WORD1_NUMLINKS
168 | FATTR4_WORD1_OWNER_GROUP
169 | FATTR4_WORD1_RAWDEV
170 | FATTR4_WORD1_SPACE_USED
171 | FATTR4_WORD1_TIME_ACCESS
172 | FATTR4_WORD1_TIME_METADATA
173 | FATTR4_WORD1_TIME_MODIFY
174 | FATTR4_WORD1_MOUNTED_ON_FILEID
177 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
178 struct nfs4_readdir_arg
*readdir
)
182 BUG_ON(readdir
->count
< 80);
184 readdir
->cookie
= cookie
;
185 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
190 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
195 * NFSv4 servers do not return entries for '.' and '..'
196 * Therefore, we fake these entries here. We let '.'
197 * have cookie 0 and '..' have cookie 1. Note that
198 * when talking to the server, we always send cookie 0
201 start
= p
= kmap_atomic(*readdir
->pages
);
204 *p
++ = xdr_one
; /* next */
205 *p
++ = xdr_zero
; /* cookie, first word */
206 *p
++ = xdr_one
; /* cookie, second word */
207 *p
++ = xdr_one
; /* entry len */
208 memcpy(p
, ".\0\0\0", 4); /* entry */
210 *p
++ = xdr_one
; /* bitmap length */
211 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
212 *p
++ = htonl(8); /* attribute buffer length */
213 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
216 *p
++ = xdr_one
; /* next */
217 *p
++ = xdr_zero
; /* cookie, first word */
218 *p
++ = xdr_two
; /* cookie, second word */
219 *p
++ = xdr_two
; /* entry len */
220 memcpy(p
, "..\0\0", 4); /* entry */
222 *p
++ = xdr_one
; /* bitmap length */
223 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
224 *p
++ = htonl(8); /* attribute buffer length */
225 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
227 readdir
->pgbase
= (char *)p
- (char *)start
;
228 readdir
->count
-= readdir
->pgbase
;
229 kunmap_atomic(start
);
232 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
238 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
239 nfs_wait_bit_killable
, TASK_KILLABLE
);
243 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
250 *timeout
= NFS4_POLL_RETRY_MIN
;
251 if (*timeout
> NFS4_POLL_RETRY_MAX
)
252 *timeout
= NFS4_POLL_RETRY_MAX
;
253 freezable_schedule_timeout_killable(*timeout
);
254 if (fatal_signal_pending(current
))
260 /* This is the error handling routine for processes that are allowed
263 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
265 struct nfs_client
*clp
= server
->nfs_client
;
266 struct nfs4_state
*state
= exception
->state
;
267 struct inode
*inode
= exception
->inode
;
270 exception
->retry
= 0;
274 case -NFS4ERR_OPENMODE
:
275 if (inode
&& nfs_have_delegation(inode
, FMODE_READ
)) {
276 nfs_inode_return_delegation(inode
);
277 exception
->retry
= 1;
282 nfs4_schedule_stateid_recovery(server
, state
);
283 goto wait_on_recovery
;
284 case -NFS4ERR_DELEG_REVOKED
:
285 case -NFS4ERR_ADMIN_REVOKED
:
286 case -NFS4ERR_BAD_STATEID
:
289 nfs_remove_bad_delegation(state
->inode
);
290 nfs4_schedule_stateid_recovery(server
, state
);
291 goto wait_on_recovery
;
292 case -NFS4ERR_EXPIRED
:
294 nfs4_schedule_stateid_recovery(server
, state
);
295 case -NFS4ERR_STALE_STATEID
:
296 case -NFS4ERR_STALE_CLIENTID
:
297 nfs4_schedule_lease_recovery(clp
);
298 goto wait_on_recovery
;
299 #if defined(CONFIG_NFS_V4_1)
300 case -NFS4ERR_BADSESSION
:
301 case -NFS4ERR_BADSLOT
:
302 case -NFS4ERR_BAD_HIGH_SLOT
:
303 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
304 case -NFS4ERR_DEADSESSION
:
305 case -NFS4ERR_SEQ_FALSE_RETRY
:
306 case -NFS4ERR_SEQ_MISORDERED
:
307 dprintk("%s ERROR: %d Reset session\n", __func__
,
309 nfs4_schedule_session_recovery(clp
->cl_session
);
310 exception
->retry
= 1;
312 #endif /* defined(CONFIG_NFS_V4_1) */
313 case -NFS4ERR_FILE_OPEN
:
314 if (exception
->timeout
> HZ
) {
315 /* We have retried a decent amount, time to
324 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
327 case -NFS4ERR_RETRY_UNCACHED_REP
:
328 case -NFS4ERR_OLD_STATEID
:
329 exception
->retry
= 1;
331 case -NFS4ERR_BADOWNER
:
332 /* The following works around a Linux server bug! */
333 case -NFS4ERR_BADNAME
:
334 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
335 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
336 exception
->retry
= 1;
337 printk(KERN_WARNING
"NFS: v4 server %s "
338 "does not accept raw "
340 "Reenabling the idmapper.\n",
341 server
->nfs_client
->cl_hostname
);
344 /* We failed to handle the error */
345 return nfs4_map_errors(ret
);
347 ret
= nfs4_wait_clnt_recover(clp
);
349 exception
->retry
= 1;
354 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
356 spin_lock(&clp
->cl_lock
);
357 if (time_before(clp
->cl_last_renewal
,timestamp
))
358 clp
->cl_last_renewal
= timestamp
;
359 spin_unlock(&clp
->cl_lock
);
362 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
364 do_renew_lease(server
->nfs_client
, timestamp
);
367 #if defined(CONFIG_NFS_V4_1)
370 * nfs4_free_slot - free a slot and efficiently update slot table.
372 * freeing a slot is trivially done by clearing its respective bit
374 * If the freed slotid equals highest_used_slotid we want to update it
375 * so that the server would be able to size down the slot table if needed,
376 * otherwise we know that the highest_used_slotid is still in use.
377 * When updating highest_used_slotid there may be "holes" in the bitmap
378 * so we need to scan down from highest_used_slotid to 0 looking for the now
379 * highest slotid in use.
380 * If none found, highest_used_slotid is set to NFS4_NO_SLOT.
382 * Must be called while holding tbl->slot_tbl_lock
385 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u32 slotid
)
387 BUG_ON(slotid
>= NFS4_MAX_SLOT_TABLE
);
388 /* clear used bit in bitmap */
389 __clear_bit(slotid
, tbl
->used_slots
);
391 /* update highest_used_slotid when it is freed */
392 if (slotid
== tbl
->highest_used_slotid
) {
393 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
394 if (slotid
< tbl
->max_slots
)
395 tbl
->highest_used_slotid
= slotid
;
397 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
399 dprintk("%s: slotid %u highest_used_slotid %d\n", __func__
,
400 slotid
, tbl
->highest_used_slotid
);
403 bool nfs4_set_task_privileged(struct rpc_task
*task
, void *dummy
)
405 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
410 * Signal state manager thread if session fore channel is drained
412 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
414 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
415 rpc_wake_up_first(&ses
->fc_slot_table
.slot_tbl_waitq
,
416 nfs4_set_task_privileged
, NULL
);
420 if (ses
->fc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
423 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
424 complete(&ses
->fc_slot_table
.complete
);
428 * Signal state manager thread if session back channel is drained
430 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
432 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
433 ses
->bc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
435 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
436 complete(&ses
->bc_slot_table
.complete
);
439 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
441 struct nfs4_slot_table
*tbl
;
443 tbl
= &res
->sr_session
->fc_slot_table
;
445 /* just wake up the next guy waiting since
446 * we may have not consumed a slot after all */
447 dprintk("%s: No slot\n", __func__
);
451 spin_lock(&tbl
->slot_tbl_lock
);
452 nfs4_free_slot(tbl
, res
->sr_slot
- tbl
->slots
);
453 nfs4_check_drain_fc_complete(res
->sr_session
);
454 spin_unlock(&tbl
->slot_tbl_lock
);
458 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
460 unsigned long timestamp
;
461 struct nfs_client
*clp
;
464 * sr_status remains 1 if an RPC level error occurred. The server
465 * may or may not have processed the sequence operation..
466 * Proceed as if the server received and processed the sequence
469 if (res
->sr_status
== 1)
470 res
->sr_status
= NFS_OK
;
472 /* don't increment the sequence number if the task wasn't sent */
473 if (!RPC_WAS_SENT(task
))
476 /* Check the SEQUENCE operation status */
477 switch (res
->sr_status
) {
479 /* Update the slot's sequence and clientid lease timer */
480 ++res
->sr_slot
->seq_nr
;
481 timestamp
= res
->sr_renewal_time
;
482 clp
= res
->sr_session
->clp
;
483 do_renew_lease(clp
, timestamp
);
484 /* Check sequence flags */
485 if (res
->sr_status_flags
!= 0)
486 nfs4_schedule_lease_recovery(clp
);
489 /* The server detected a resend of the RPC call and
490 * returned NFS4ERR_DELAY as per Section 2.10.6.2
493 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
495 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
496 res
->sr_slot
->seq_nr
);
499 /* Just update the slot sequence no. */
500 ++res
->sr_slot
->seq_nr
;
503 /* The session may be reset by one of the error handlers. */
504 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
505 nfs41_sequence_free_slot(res
);
508 if (!rpc_restart_call(task
))
510 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
514 static int nfs4_sequence_done(struct rpc_task
*task
,
515 struct nfs4_sequence_res
*res
)
517 if (res
->sr_session
== NULL
)
519 return nfs41_sequence_done(task
, res
);
523 * nfs4_find_slot - efficiently look for a free slot
525 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
526 * If found, we mark the slot as used, update the highest_used_slotid,
527 * and respectively set up the sequence operation args.
528 * The slot number is returned if found, or NFS4_NO_SLOT otherwise.
530 * Note: must be called with under the slot_tbl_lock.
533 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
536 u32 ret_id
= NFS4_NO_SLOT
;
538 dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n",
539 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
541 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
542 if (slotid
>= tbl
->max_slots
)
544 __set_bit(slotid
, tbl
->used_slots
);
545 if (slotid
> tbl
->highest_used_slotid
||
546 tbl
->highest_used_slotid
== NFS4_NO_SLOT
)
547 tbl
->highest_used_slotid
= slotid
;
550 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
551 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
555 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
556 struct nfs4_sequence_res
*res
, int cache_reply
)
558 args
->sa_session
= NULL
;
559 args
->sa_cache_this
= 0;
561 args
->sa_cache_this
= 1;
562 res
->sr_session
= NULL
;
566 int nfs41_setup_sequence(struct nfs4_session
*session
,
567 struct nfs4_sequence_args
*args
,
568 struct nfs4_sequence_res
*res
,
569 struct rpc_task
*task
)
571 struct nfs4_slot
*slot
;
572 struct nfs4_slot_table
*tbl
;
575 dprintk("--> %s\n", __func__
);
576 /* slot already allocated? */
577 if (res
->sr_slot
!= NULL
)
580 tbl
= &session
->fc_slot_table
;
582 spin_lock(&tbl
->slot_tbl_lock
);
583 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
584 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
585 /* The state manager will wait until the slot table is empty */
586 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
587 spin_unlock(&tbl
->slot_tbl_lock
);
588 dprintk("%s session is draining\n", __func__
);
592 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
593 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
594 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
595 spin_unlock(&tbl
->slot_tbl_lock
);
596 dprintk("%s enforce FIFO order\n", __func__
);
600 slotid
= nfs4_find_slot(tbl
);
601 if (slotid
== NFS4_NO_SLOT
) {
602 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
603 spin_unlock(&tbl
->slot_tbl_lock
);
604 dprintk("<-- %s: no free slots\n", __func__
);
607 spin_unlock(&tbl
->slot_tbl_lock
);
609 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
610 slot
= tbl
->slots
+ slotid
;
611 args
->sa_session
= session
;
612 args
->sa_slotid
= slotid
;
614 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
616 res
->sr_session
= session
;
618 res
->sr_renewal_time
= jiffies
;
619 res
->sr_status_flags
= 0;
621 * sr_status is only set in decode_sequence, and so will remain
622 * set to 1 if an rpc level failure occurs.
627 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
629 int nfs4_setup_sequence(const struct nfs_server
*server
,
630 struct nfs4_sequence_args
*args
,
631 struct nfs4_sequence_res
*res
,
632 struct rpc_task
*task
)
634 struct nfs4_session
*session
= nfs4_get_session(server
);
640 dprintk("--> %s clp %p session %p sr_slot %td\n",
641 __func__
, session
->clp
, session
, res
->sr_slot
?
642 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
644 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
646 dprintk("<-- %s status=%d\n", __func__
, ret
);
650 struct nfs41_call_sync_data
{
651 const struct nfs_server
*seq_server
;
652 struct nfs4_sequence_args
*seq_args
;
653 struct nfs4_sequence_res
*seq_res
;
656 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
658 struct nfs41_call_sync_data
*data
= calldata
;
660 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
662 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
663 data
->seq_res
, task
))
665 rpc_call_start(task
);
668 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
670 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
671 nfs41_call_sync_prepare(task
, calldata
);
674 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
676 struct nfs41_call_sync_data
*data
= calldata
;
678 nfs41_sequence_done(task
, data
->seq_res
);
681 static const struct rpc_call_ops nfs41_call_sync_ops
= {
682 .rpc_call_prepare
= nfs41_call_sync_prepare
,
683 .rpc_call_done
= nfs41_call_sync_done
,
686 static const struct rpc_call_ops nfs41_call_priv_sync_ops
= {
687 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
688 .rpc_call_done
= nfs41_call_sync_done
,
691 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
692 struct nfs_server
*server
,
693 struct rpc_message
*msg
,
694 struct nfs4_sequence_args
*args
,
695 struct nfs4_sequence_res
*res
,
699 struct rpc_task
*task
;
700 struct nfs41_call_sync_data data
= {
701 .seq_server
= server
,
705 struct rpc_task_setup task_setup
= {
708 .callback_ops
= &nfs41_call_sync_ops
,
709 .callback_data
= &data
713 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
714 task
= rpc_run_task(&task_setup
);
718 ret
= task
->tk_status
;
724 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
725 struct nfs_server
*server
,
726 struct rpc_message
*msg
,
727 struct nfs4_sequence_args
*args
,
728 struct nfs4_sequence_res
*res
,
731 nfs41_init_sequence(args
, res
, cache_reply
);
732 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, 0);
737 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
738 struct nfs4_sequence_res
*res
, int cache_reply
)
742 static int nfs4_sequence_done(struct rpc_task
*task
,
743 struct nfs4_sequence_res
*res
)
747 #endif /* CONFIG_NFS_V4_1 */
749 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
750 struct nfs_server
*server
,
751 struct rpc_message
*msg
,
752 struct nfs4_sequence_args
*args
,
753 struct nfs4_sequence_res
*res
,
756 nfs41_init_sequence(args
, res
, cache_reply
);
757 return rpc_call_sync(clnt
, msg
, 0);
761 int nfs4_call_sync(struct rpc_clnt
*clnt
,
762 struct nfs_server
*server
,
763 struct rpc_message
*msg
,
764 struct nfs4_sequence_args
*args
,
765 struct nfs4_sequence_res
*res
,
768 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
769 args
, res
, cache_reply
);
772 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
774 struct nfs_inode
*nfsi
= NFS_I(dir
);
776 spin_lock(&dir
->i_lock
);
777 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
778 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
779 nfs_force_lookup_revalidate(dir
);
780 dir
->i_version
= cinfo
->after
;
781 spin_unlock(&dir
->i_lock
);
784 struct nfs4_opendata
{
786 struct nfs_openargs o_arg
;
787 struct nfs_openres o_res
;
788 struct nfs_open_confirmargs c_arg
;
789 struct nfs_open_confirmres c_res
;
790 struct nfs4_string owner_name
;
791 struct nfs4_string group_name
;
792 struct nfs_fattr f_attr
;
794 struct dentry
*dentry
;
795 struct nfs4_state_owner
*owner
;
796 struct nfs4_state
*state
;
798 unsigned long timestamp
;
799 unsigned int rpc_done
: 1;
805 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
807 p
->o_res
.f_attr
= &p
->f_attr
;
808 p
->o_res
.seqid
= p
->o_arg
.seqid
;
809 p
->c_res
.seqid
= p
->c_arg
.seqid
;
810 p
->o_res
.server
= p
->o_arg
.server
;
811 nfs_fattr_init(&p
->f_attr
);
812 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
815 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
816 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
817 const struct iattr
*attrs
,
820 struct dentry
*parent
= dget_parent(dentry
);
821 struct inode
*dir
= parent
->d_inode
;
822 struct nfs_server
*server
= NFS_SERVER(dir
);
823 struct nfs4_opendata
*p
;
825 p
= kzalloc(sizeof(*p
), gfp_mask
);
828 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
829 if (p
->o_arg
.seqid
== NULL
)
831 nfs_sb_active(dentry
->d_sb
);
832 p
->dentry
= dget(dentry
);
835 atomic_inc(&sp
->so_count
);
836 p
->o_arg
.fh
= NFS_FH(dir
);
837 p
->o_arg
.open_flags
= flags
;
838 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
839 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
840 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
841 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
842 p
->o_arg
.name
= &dentry
->d_name
;
843 p
->o_arg
.server
= server
;
844 p
->o_arg
.bitmask
= server
->attr_bitmask
;
845 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
846 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
849 p
->o_arg
.u
.attrs
= &p
->attrs
;
850 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
853 verf
[1] = current
->pid
;
854 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
855 sizeof(p
->o_arg
.u
.verifier
.data
));
857 p
->c_arg
.fh
= &p
->o_res
.fh
;
858 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
859 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
860 nfs4_init_opendata_res(p
);
870 static void nfs4_opendata_free(struct kref
*kref
)
872 struct nfs4_opendata
*p
= container_of(kref
,
873 struct nfs4_opendata
, kref
);
874 struct super_block
*sb
= p
->dentry
->d_sb
;
876 nfs_free_seqid(p
->o_arg
.seqid
);
877 if (p
->state
!= NULL
)
878 nfs4_put_open_state(p
->state
);
879 nfs4_put_state_owner(p
->owner
);
883 nfs_fattr_free_names(&p
->f_attr
);
887 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
890 kref_put(&p
->kref
, nfs4_opendata_free
);
893 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
897 ret
= rpc_wait_for_completion_task(task
);
901 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
905 if (open_mode
& (O_EXCL
|O_TRUNC
))
907 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
909 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
910 && state
->n_rdonly
!= 0;
913 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
914 && state
->n_wronly
!= 0;
916 case FMODE_READ
|FMODE_WRITE
:
917 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
918 && state
->n_rdwr
!= 0;
924 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
926 if (delegation
== NULL
)
928 if ((delegation
->type
& fmode
) != fmode
)
930 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
932 nfs_mark_delegation_referenced(delegation
);
936 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
945 case FMODE_READ
|FMODE_WRITE
:
948 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
951 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
953 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
954 nfs4_stateid_copy(&state
->stateid
, stateid
);
955 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
958 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
961 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
963 case FMODE_READ
|FMODE_WRITE
:
964 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
968 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
970 write_seqlock(&state
->seqlock
);
971 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
972 write_sequnlock(&state
->seqlock
);
975 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
978 * Protect the call to nfs4_state_set_mode_locked and
979 * serialise the stateid update
981 write_seqlock(&state
->seqlock
);
982 if (deleg_stateid
!= NULL
) {
983 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
984 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
986 if (open_stateid
!= NULL
)
987 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
988 write_sequnlock(&state
->seqlock
);
989 spin_lock(&state
->owner
->so_lock
);
990 update_open_stateflags(state
, fmode
);
991 spin_unlock(&state
->owner
->so_lock
);
994 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
996 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
997 struct nfs_delegation
*deleg_cur
;
1000 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1003 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1004 if (deleg_cur
== NULL
)
1007 spin_lock(&deleg_cur
->lock
);
1008 if (nfsi
->delegation
!= deleg_cur
||
1009 (deleg_cur
->type
& fmode
) != fmode
)
1010 goto no_delegation_unlock
;
1012 if (delegation
== NULL
)
1013 delegation
= &deleg_cur
->stateid
;
1014 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1015 goto no_delegation_unlock
;
1017 nfs_mark_delegation_referenced(deleg_cur
);
1018 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1020 no_delegation_unlock
:
1021 spin_unlock(&deleg_cur
->lock
);
1025 if (!ret
&& open_stateid
!= NULL
) {
1026 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1034 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1036 struct nfs_delegation
*delegation
;
1039 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1040 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1045 nfs_inode_return_delegation(inode
);
1048 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1050 struct nfs4_state
*state
= opendata
->state
;
1051 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1052 struct nfs_delegation
*delegation
;
1053 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1054 fmode_t fmode
= opendata
->o_arg
.fmode
;
1055 nfs4_stateid stateid
;
1059 if (can_open_cached(state
, fmode
, open_mode
)) {
1060 spin_lock(&state
->owner
->so_lock
);
1061 if (can_open_cached(state
, fmode
, open_mode
)) {
1062 update_open_stateflags(state
, fmode
);
1063 spin_unlock(&state
->owner
->so_lock
);
1064 goto out_return_state
;
1066 spin_unlock(&state
->owner
->so_lock
);
1069 delegation
= rcu_dereference(nfsi
->delegation
);
1070 if (!can_open_delegated(delegation
, fmode
)) {
1074 /* Save the delegation */
1075 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1077 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1082 /* Try to update the stateid using the delegation */
1083 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1084 goto out_return_state
;
1087 return ERR_PTR(ret
);
1089 atomic_inc(&state
->count
);
1093 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1095 struct inode
*inode
;
1096 struct nfs4_state
*state
= NULL
;
1097 struct nfs_delegation
*delegation
;
1100 if (!data
->rpc_done
) {
1101 state
= nfs4_try_open_cached(data
);
1106 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1108 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1109 ret
= PTR_ERR(inode
);
1113 state
= nfs4_get_open_state(inode
, data
->owner
);
1116 if (data
->o_res
.delegation_type
!= 0) {
1117 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
1118 int delegation_flags
= 0;
1121 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1123 delegation_flags
= delegation
->flags
;
1125 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1126 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1127 "returning a delegation for "
1128 "OPEN(CLAIM_DELEGATE_CUR)\n",
1130 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1131 nfs_inode_set_delegation(state
->inode
,
1132 data
->owner
->so_cred
,
1135 nfs_inode_reclaim_delegation(state
->inode
,
1136 data
->owner
->so_cred
,
1140 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1148 return ERR_PTR(ret
);
1151 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1153 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1154 struct nfs_open_context
*ctx
;
1156 spin_lock(&state
->inode
->i_lock
);
1157 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1158 if (ctx
->state
!= state
)
1160 get_nfs_open_context(ctx
);
1161 spin_unlock(&state
->inode
->i_lock
);
1164 spin_unlock(&state
->inode
->i_lock
);
1165 return ERR_PTR(-ENOENT
);
1168 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1170 struct nfs4_opendata
*opendata
;
1172 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1173 if (opendata
== NULL
)
1174 return ERR_PTR(-ENOMEM
);
1175 opendata
->state
= state
;
1176 atomic_inc(&state
->count
);
1180 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1182 struct nfs4_state
*newstate
;
1185 opendata
->o_arg
.open_flags
= 0;
1186 opendata
->o_arg
.fmode
= fmode
;
1187 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1188 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1189 nfs4_init_opendata_res(opendata
);
1190 ret
= _nfs4_recover_proc_open(opendata
);
1193 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1194 if (IS_ERR(newstate
))
1195 return PTR_ERR(newstate
);
1196 nfs4_close_state(newstate
, fmode
);
1201 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1203 struct nfs4_state
*newstate
;
1206 /* memory barrier prior to reading state->n_* */
1207 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1209 if (state
->n_rdwr
!= 0) {
1210 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1211 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1214 if (newstate
!= state
)
1217 if (state
->n_wronly
!= 0) {
1218 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1219 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1222 if (newstate
!= state
)
1225 if (state
->n_rdonly
!= 0) {
1226 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1227 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1230 if (newstate
!= state
)
1234 * We may have performed cached opens for all three recoveries.
1235 * Check if we need to update the current stateid.
1237 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1238 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1239 write_seqlock(&state
->seqlock
);
1240 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1241 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1242 write_sequnlock(&state
->seqlock
);
1249 * reclaim state on the server after a reboot.
1251 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1253 struct nfs_delegation
*delegation
;
1254 struct nfs4_opendata
*opendata
;
1255 fmode_t delegation_type
= 0;
1258 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1259 if (IS_ERR(opendata
))
1260 return PTR_ERR(opendata
);
1261 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1262 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1264 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1265 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1266 delegation_type
= delegation
->type
;
1268 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1269 status
= nfs4_open_recover(opendata
, state
);
1270 nfs4_opendata_put(opendata
);
1274 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1276 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1277 struct nfs4_exception exception
= { };
1280 err
= _nfs4_do_open_reclaim(ctx
, state
);
1281 if (err
!= -NFS4ERR_DELAY
)
1283 nfs4_handle_exception(server
, err
, &exception
);
1284 } while (exception
.retry
);
1288 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1290 struct nfs_open_context
*ctx
;
1293 ctx
= nfs4_state_find_open_context(state
);
1295 return PTR_ERR(ctx
);
1296 ret
= nfs4_do_open_reclaim(ctx
, state
);
1297 put_nfs_open_context(ctx
);
1301 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1303 struct nfs4_opendata
*opendata
;
1306 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1307 if (IS_ERR(opendata
))
1308 return PTR_ERR(opendata
);
1309 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1310 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1311 ret
= nfs4_open_recover(opendata
, state
);
1312 nfs4_opendata_put(opendata
);
1316 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1318 struct nfs4_exception exception
= { };
1319 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1322 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1328 case -NFS4ERR_BADSESSION
:
1329 case -NFS4ERR_BADSLOT
:
1330 case -NFS4ERR_BAD_HIGH_SLOT
:
1331 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1332 case -NFS4ERR_DEADSESSION
:
1333 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
1335 case -NFS4ERR_STALE_CLIENTID
:
1336 case -NFS4ERR_STALE_STATEID
:
1337 case -NFS4ERR_EXPIRED
:
1338 /* Don't recall a delegation if it was lost */
1339 nfs4_schedule_lease_recovery(server
->nfs_client
);
1343 * The show must go on: exit, but mark the
1344 * stateid as needing recovery.
1346 case -NFS4ERR_DELEG_REVOKED
:
1347 case -NFS4ERR_ADMIN_REVOKED
:
1348 case -NFS4ERR_BAD_STATEID
:
1349 nfs_inode_find_state_and_recover(state
->inode
,
1351 nfs4_schedule_stateid_recovery(server
, state
);
1354 * User RPCSEC_GSS context has expired.
1355 * We cannot recover this stateid now, so
1356 * skip it and allow recovery thread to
1363 err
= nfs4_handle_exception(server
, err
, &exception
);
1364 } while (exception
.retry
);
1369 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1371 struct nfs4_opendata
*data
= calldata
;
1373 data
->rpc_status
= task
->tk_status
;
1374 if (data
->rpc_status
== 0) {
1375 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1376 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1377 renew_lease(data
->o_res
.server
, data
->timestamp
);
1382 static void nfs4_open_confirm_release(void *calldata
)
1384 struct nfs4_opendata
*data
= calldata
;
1385 struct nfs4_state
*state
= NULL
;
1387 /* If this request hasn't been cancelled, do nothing */
1388 if (data
->cancelled
== 0)
1390 /* In case of error, no cleanup! */
1391 if (!data
->rpc_done
)
1393 state
= nfs4_opendata_to_nfs4_state(data
);
1395 nfs4_close_state(state
, data
->o_arg
.fmode
);
1397 nfs4_opendata_put(data
);
1400 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1401 .rpc_call_done
= nfs4_open_confirm_done
,
1402 .rpc_release
= nfs4_open_confirm_release
,
1406 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1408 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1410 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1411 struct rpc_task
*task
;
1412 struct rpc_message msg
= {
1413 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1414 .rpc_argp
= &data
->c_arg
,
1415 .rpc_resp
= &data
->c_res
,
1416 .rpc_cred
= data
->owner
->so_cred
,
1418 struct rpc_task_setup task_setup_data
= {
1419 .rpc_client
= server
->client
,
1420 .rpc_message
= &msg
,
1421 .callback_ops
= &nfs4_open_confirm_ops
,
1422 .callback_data
= data
,
1423 .workqueue
= nfsiod_workqueue
,
1424 .flags
= RPC_TASK_ASYNC
,
1428 kref_get(&data
->kref
);
1430 data
->rpc_status
= 0;
1431 data
->timestamp
= jiffies
;
1432 task
= rpc_run_task(&task_setup_data
);
1434 return PTR_ERR(task
);
1435 status
= nfs4_wait_for_completion_rpc_task(task
);
1437 data
->cancelled
= 1;
1440 status
= data
->rpc_status
;
1445 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1447 struct nfs4_opendata
*data
= calldata
;
1448 struct nfs4_state_owner
*sp
= data
->owner
;
1450 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1453 * Check if we still need to send an OPEN call, or if we can use
1454 * a delegation instead.
1456 if (data
->state
!= NULL
) {
1457 struct nfs_delegation
*delegation
;
1459 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1462 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1463 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1464 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1465 goto unlock_no_action
;
1468 /* Update client id. */
1469 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1470 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1471 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1472 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1474 data
->timestamp
= jiffies
;
1475 if (nfs4_setup_sequence(data
->o_arg
.server
,
1476 &data
->o_arg
.seq_args
,
1477 &data
->o_res
.seq_res
, task
))
1479 rpc_call_start(task
);
1484 task
->tk_action
= NULL
;
1488 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1490 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1491 nfs4_open_prepare(task
, calldata
);
1494 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1496 struct nfs4_opendata
*data
= calldata
;
1498 data
->rpc_status
= task
->tk_status
;
1500 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1503 if (task
->tk_status
== 0) {
1504 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1508 data
->rpc_status
= -ELOOP
;
1511 data
->rpc_status
= -EISDIR
;
1514 data
->rpc_status
= -ENOTDIR
;
1516 renew_lease(data
->o_res
.server
, data
->timestamp
);
1517 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1518 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1523 static void nfs4_open_release(void *calldata
)
1525 struct nfs4_opendata
*data
= calldata
;
1526 struct nfs4_state
*state
= NULL
;
1528 /* If this request hasn't been cancelled, do nothing */
1529 if (data
->cancelled
== 0)
1531 /* In case of error, no cleanup! */
1532 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1534 /* In case we need an open_confirm, no cleanup! */
1535 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1537 state
= nfs4_opendata_to_nfs4_state(data
);
1539 nfs4_close_state(state
, data
->o_arg
.fmode
);
1541 nfs4_opendata_put(data
);
1544 static const struct rpc_call_ops nfs4_open_ops
= {
1545 .rpc_call_prepare
= nfs4_open_prepare
,
1546 .rpc_call_done
= nfs4_open_done
,
1547 .rpc_release
= nfs4_open_release
,
1550 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1551 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1552 .rpc_call_done
= nfs4_open_done
,
1553 .rpc_release
= nfs4_open_release
,
1556 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1558 struct inode
*dir
= data
->dir
->d_inode
;
1559 struct nfs_server
*server
= NFS_SERVER(dir
);
1560 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1561 struct nfs_openres
*o_res
= &data
->o_res
;
1562 struct rpc_task
*task
;
1563 struct rpc_message msg
= {
1564 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1567 .rpc_cred
= data
->owner
->so_cred
,
1569 struct rpc_task_setup task_setup_data
= {
1570 .rpc_client
= server
->client
,
1571 .rpc_message
= &msg
,
1572 .callback_ops
= &nfs4_open_ops
,
1573 .callback_data
= data
,
1574 .workqueue
= nfsiod_workqueue
,
1575 .flags
= RPC_TASK_ASYNC
,
1579 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1580 kref_get(&data
->kref
);
1582 data
->rpc_status
= 0;
1583 data
->cancelled
= 0;
1585 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1586 task
= rpc_run_task(&task_setup_data
);
1588 return PTR_ERR(task
);
1589 status
= nfs4_wait_for_completion_rpc_task(task
);
1591 data
->cancelled
= 1;
1594 status
= data
->rpc_status
;
1600 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1602 struct inode
*dir
= data
->dir
->d_inode
;
1603 struct nfs_openres
*o_res
= &data
->o_res
;
1606 status
= nfs4_run_open_task(data
, 1);
1607 if (status
!= 0 || !data
->rpc_done
)
1610 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1612 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1613 status
= _nfs4_proc_open_confirm(data
);
1622 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1624 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1626 struct inode
*dir
= data
->dir
->d_inode
;
1627 struct nfs_server
*server
= NFS_SERVER(dir
);
1628 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1629 struct nfs_openres
*o_res
= &data
->o_res
;
1632 status
= nfs4_run_open_task(data
, 0);
1633 if (!data
->rpc_done
)
1636 if (status
== -NFS4ERR_BADNAME
&&
1637 !(o_arg
->open_flags
& O_CREAT
))
1642 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1644 if (o_arg
->open_flags
& O_CREAT
)
1645 update_changeattr(dir
, &o_res
->cinfo
);
1646 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1647 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1648 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1649 status
= _nfs4_proc_open_confirm(data
);
1653 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1654 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1658 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1663 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1664 ret
= nfs4_wait_clnt_recover(clp
);
1667 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1668 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1670 nfs4_schedule_state_manager(clp
);
1676 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1678 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1683 * reclaim state on the server after a network partition.
1684 * Assumes caller holds the appropriate lock
1686 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1688 struct nfs4_opendata
*opendata
;
1691 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1692 if (IS_ERR(opendata
))
1693 return PTR_ERR(opendata
);
1694 ret
= nfs4_open_recover(opendata
, state
);
1696 d_drop(ctx
->dentry
);
1697 nfs4_opendata_put(opendata
);
1701 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1703 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1704 struct nfs4_exception exception
= { };
1708 err
= _nfs4_open_expired(ctx
, state
);
1712 case -NFS4ERR_GRACE
:
1713 case -NFS4ERR_DELAY
:
1714 nfs4_handle_exception(server
, err
, &exception
);
1717 } while (exception
.retry
);
1722 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1724 struct nfs_open_context
*ctx
;
1727 ctx
= nfs4_state_find_open_context(state
);
1729 return PTR_ERR(ctx
);
1730 ret
= nfs4_do_open_expired(ctx
, state
);
1731 put_nfs_open_context(ctx
);
1735 #if defined(CONFIG_NFS_V4_1)
1736 static int nfs41_check_expired_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, unsigned int flags
)
1738 int status
= NFS_OK
;
1739 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1741 if (state
->flags
& flags
) {
1742 status
= nfs41_test_stateid(server
, stateid
);
1743 if (status
!= NFS_OK
) {
1744 nfs41_free_stateid(server
, stateid
);
1745 state
->flags
&= ~flags
;
1751 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1753 int deleg_status
, open_status
;
1754 int deleg_flags
= 1 << NFS_DELEGATED_STATE
;
1755 int open_flags
= (1 << NFS_O_RDONLY_STATE
) | (1 << NFS_O_WRONLY_STATE
) | (1 << NFS_O_RDWR_STATE
);
1757 deleg_status
= nfs41_check_expired_stateid(state
, &state
->stateid
, deleg_flags
);
1758 open_status
= nfs41_check_expired_stateid(state
, &state
->open_stateid
, open_flags
);
1760 if ((deleg_status
== NFS_OK
) && (open_status
== NFS_OK
))
1762 return nfs4_open_expired(sp
, state
);
1767 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1768 * fields corresponding to attributes that were used to store the verifier.
1769 * Make sure we clobber those fields in the later setattr call
1771 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1773 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1774 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1775 sattr
->ia_valid
|= ATTR_ATIME
;
1777 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1778 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1779 sattr
->ia_valid
|= ATTR_MTIME
;
1783 * Returns a referenced nfs4_state
1785 static int _nfs4_do_open(struct inode
*dir
, struct dentry
*dentry
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
1787 struct nfs4_state_owner
*sp
;
1788 struct nfs4_state
*state
= NULL
;
1789 struct nfs_server
*server
= NFS_SERVER(dir
);
1790 struct nfs4_opendata
*opendata
;
1793 /* Protect against reboot recovery conflicts */
1795 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1797 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1800 status
= nfs4_recover_expired_lease(server
);
1802 goto err_put_state_owner
;
1803 if (dentry
->d_inode
!= NULL
)
1804 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1806 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1807 if (opendata
== NULL
)
1808 goto err_put_state_owner
;
1810 if (dentry
->d_inode
!= NULL
)
1811 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1813 status
= _nfs4_proc_open(opendata
);
1815 goto err_opendata_put
;
1817 state
= nfs4_opendata_to_nfs4_state(opendata
);
1818 status
= PTR_ERR(state
);
1820 goto err_opendata_put
;
1821 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1822 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1824 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1825 nfs4_exclusive_attrset(opendata
, sattr
);
1827 nfs_fattr_init(opendata
->o_res
.f_attr
);
1828 status
= nfs4_do_setattr(state
->inode
, cred
,
1829 opendata
->o_res
.f_attr
, sattr
,
1832 nfs_setattr_update_inode(state
->inode
, sattr
);
1833 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1835 nfs4_opendata_put(opendata
);
1836 nfs4_put_state_owner(sp
);
1840 nfs4_opendata_put(opendata
);
1841 err_put_state_owner
:
1842 nfs4_put_state_owner(sp
);
1849 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct dentry
*dentry
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1851 struct nfs4_exception exception
= { };
1852 struct nfs4_state
*res
;
1856 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
, &res
);
1859 /* NOTE: BAD_SEQID means the server and client disagree about the
1860 * book-keeping w.r.t. state-changing operations
1861 * (OPEN/CLOSE/LOCK/LOCKU...)
1862 * It is actually a sign of a bug on the client or on the server.
1864 * If we receive a BAD_SEQID error in the particular case of
1865 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1866 * have unhashed the old state_owner for us, and that we can
1867 * therefore safely retry using a new one. We should still warn
1868 * the user though...
1870 if (status
== -NFS4ERR_BAD_SEQID
) {
1871 pr_warn_ratelimited("NFS: v4 server %s "
1872 " returned a bad sequence-id error!\n",
1873 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1874 exception
.retry
= 1;
1878 * BAD_STATEID on OPEN means that the server cancelled our
1879 * state before it received the OPEN_CONFIRM.
1880 * Recover by retrying the request as per the discussion
1881 * on Page 181 of RFC3530.
1883 if (status
== -NFS4ERR_BAD_STATEID
) {
1884 exception
.retry
= 1;
1887 if (status
== -EAGAIN
) {
1888 /* We must have found a delegation */
1889 exception
.retry
= 1;
1892 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1893 status
, &exception
));
1894 } while (exception
.retry
);
1898 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1899 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1900 struct nfs4_state
*state
)
1902 struct nfs_server
*server
= NFS_SERVER(inode
);
1903 struct nfs_setattrargs arg
= {
1904 .fh
= NFS_FH(inode
),
1907 .bitmask
= server
->attr_bitmask
,
1909 struct nfs_setattrres res
= {
1913 struct rpc_message msg
= {
1914 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1919 unsigned long timestamp
= jiffies
;
1922 nfs_fattr_init(fattr
);
1924 if (state
!= NULL
) {
1925 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
1926 current
->files
, current
->tgid
);
1927 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
1929 /* Use that stateid */
1931 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
1933 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
1934 if (status
== 0 && state
!= NULL
)
1935 renew_lease(server
, timestamp
);
1939 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1940 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1941 struct nfs4_state
*state
)
1943 struct nfs_server
*server
= NFS_SERVER(inode
);
1944 struct nfs4_exception exception
= {
1950 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
1952 case -NFS4ERR_OPENMODE
:
1953 if (state
&& !(state
->state
& FMODE_WRITE
)) {
1955 if (sattr
->ia_valid
& ATTR_OPEN
)
1960 err
= nfs4_handle_exception(server
, err
, &exception
);
1961 } while (exception
.retry
);
1966 struct nfs4_closedata
{
1967 struct inode
*inode
;
1968 struct nfs4_state
*state
;
1969 struct nfs_closeargs arg
;
1970 struct nfs_closeres res
;
1971 struct nfs_fattr fattr
;
1972 unsigned long timestamp
;
1977 static void nfs4_free_closedata(void *data
)
1979 struct nfs4_closedata
*calldata
= data
;
1980 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1981 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
1984 pnfs_roc_release(calldata
->state
->inode
);
1985 nfs4_put_open_state(calldata
->state
);
1986 nfs_free_seqid(calldata
->arg
.seqid
);
1987 nfs4_put_state_owner(sp
);
1988 nfs_sb_deactive(sb
);
1992 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
1995 spin_lock(&state
->owner
->so_lock
);
1996 if (!(fmode
& FMODE_READ
))
1997 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1998 if (!(fmode
& FMODE_WRITE
))
1999 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2000 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2001 spin_unlock(&state
->owner
->so_lock
);
2004 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2006 struct nfs4_closedata
*calldata
= data
;
2007 struct nfs4_state
*state
= calldata
->state
;
2008 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2010 dprintk("%s: begin!\n", __func__
);
2011 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2013 /* hmm. we are done with the inode, and in the process of freeing
2014 * the state_owner. we keep this around to process errors
2016 switch (task
->tk_status
) {
2019 pnfs_roc_set_barrier(state
->inode
,
2020 calldata
->roc_barrier
);
2021 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2022 renew_lease(server
, calldata
->timestamp
);
2023 nfs4_close_clear_stateid_flags(state
,
2024 calldata
->arg
.fmode
);
2026 case -NFS4ERR_STALE_STATEID
:
2027 case -NFS4ERR_OLD_STATEID
:
2028 case -NFS4ERR_BAD_STATEID
:
2029 case -NFS4ERR_EXPIRED
:
2030 if (calldata
->arg
.fmode
== 0)
2033 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2034 rpc_restart_call_prepare(task
);
2036 nfs_release_seqid(calldata
->arg
.seqid
);
2037 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2038 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2041 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2043 struct nfs4_closedata
*calldata
= data
;
2044 struct nfs4_state
*state
= calldata
->state
;
2047 dprintk("%s: begin!\n", __func__
);
2048 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2051 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2052 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2053 spin_lock(&state
->owner
->so_lock
);
2054 /* Calculate the change in open mode */
2055 if (state
->n_rdwr
== 0) {
2056 if (state
->n_rdonly
== 0) {
2057 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2058 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2059 calldata
->arg
.fmode
&= ~FMODE_READ
;
2061 if (state
->n_wronly
== 0) {
2062 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2063 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2064 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2067 spin_unlock(&state
->owner
->so_lock
);
2070 /* Note: exit _without_ calling nfs4_close_done */
2071 task
->tk_action
= NULL
;
2075 if (calldata
->arg
.fmode
== 0) {
2076 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2077 if (calldata
->roc
&&
2078 pnfs_roc_drain(calldata
->inode
, &calldata
->roc_barrier
)) {
2079 rpc_sleep_on(&NFS_SERVER(calldata
->inode
)->roc_rpcwaitq
,
2085 nfs_fattr_init(calldata
->res
.fattr
);
2086 calldata
->timestamp
= jiffies
;
2087 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
2088 &calldata
->arg
.seq_args
,
2089 &calldata
->res
.seq_res
,
2092 rpc_call_start(task
);
2094 dprintk("%s: done!\n", __func__
);
2097 static const struct rpc_call_ops nfs4_close_ops
= {
2098 .rpc_call_prepare
= nfs4_close_prepare
,
2099 .rpc_call_done
= nfs4_close_done
,
2100 .rpc_release
= nfs4_free_closedata
,
2104 * It is possible for data to be read/written from a mem-mapped file
2105 * after the sys_close call (which hits the vfs layer as a flush).
2106 * This means that we can't safely call nfsv4 close on a file until
2107 * the inode is cleared. This in turn means that we are not good
2108 * NFSv4 citizens - we do not indicate to the server to update the file's
2109 * share state even when we are done with one of the three share
2110 * stateid's in the inode.
2112 * NOTE: Caller must be holding the sp->so_owner semaphore!
2114 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
, bool roc
)
2116 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2117 struct nfs4_closedata
*calldata
;
2118 struct nfs4_state_owner
*sp
= state
->owner
;
2119 struct rpc_task
*task
;
2120 struct rpc_message msg
= {
2121 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2122 .rpc_cred
= state
->owner
->so_cred
,
2124 struct rpc_task_setup task_setup_data
= {
2125 .rpc_client
= server
->client
,
2126 .rpc_message
= &msg
,
2127 .callback_ops
= &nfs4_close_ops
,
2128 .workqueue
= nfsiod_workqueue
,
2129 .flags
= RPC_TASK_ASYNC
,
2131 int status
= -ENOMEM
;
2133 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2134 if (calldata
== NULL
)
2136 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2137 calldata
->inode
= state
->inode
;
2138 calldata
->state
= state
;
2139 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2140 calldata
->arg
.stateid
= &state
->open_stateid
;
2141 /* Serialization for the sequence id */
2142 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2143 if (calldata
->arg
.seqid
== NULL
)
2144 goto out_free_calldata
;
2145 calldata
->arg
.fmode
= 0;
2146 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2147 calldata
->res
.fattr
= &calldata
->fattr
;
2148 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2149 calldata
->res
.server
= server
;
2150 calldata
->roc
= roc
;
2151 nfs_sb_active(calldata
->inode
->i_sb
);
2153 msg
.rpc_argp
= &calldata
->arg
;
2154 msg
.rpc_resp
= &calldata
->res
;
2155 task_setup_data
.callback_data
= calldata
;
2156 task
= rpc_run_task(&task_setup_data
);
2158 return PTR_ERR(task
);
2161 status
= rpc_wait_for_completion_task(task
);
2168 pnfs_roc_release(state
->inode
);
2169 nfs4_put_open_state(state
);
2170 nfs4_put_state_owner(sp
);
2174 static struct inode
*
2175 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2177 struct nfs4_state
*state
;
2179 /* Protect against concurrent sillydeletes */
2180 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
, ctx
->cred
);
2182 return ERR_CAST(state
);
2184 return igrab(state
->inode
);
2187 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2189 if (ctx
->state
== NULL
)
2192 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2194 nfs4_close_state(ctx
->state
, ctx
->mode
);
2197 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2199 struct nfs4_server_caps_arg args
= {
2202 struct nfs4_server_caps_res res
= {};
2203 struct rpc_message msg
= {
2204 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2210 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2212 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2213 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2214 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2215 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2216 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2217 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2218 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2219 server
->caps
|= NFS_CAP_ACLS
;
2220 if (res
.has_links
!= 0)
2221 server
->caps
|= NFS_CAP_HARDLINKS
;
2222 if (res
.has_symlinks
!= 0)
2223 server
->caps
|= NFS_CAP_SYMLINKS
;
2224 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2225 server
->caps
|= NFS_CAP_FILEID
;
2226 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2227 server
->caps
|= NFS_CAP_MODE
;
2228 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2229 server
->caps
|= NFS_CAP_NLINK
;
2230 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2231 server
->caps
|= NFS_CAP_OWNER
;
2232 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2233 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2234 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2235 server
->caps
|= NFS_CAP_ATIME
;
2236 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2237 server
->caps
|= NFS_CAP_CTIME
;
2238 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2239 server
->caps
|= NFS_CAP_MTIME
;
2241 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2242 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2243 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2244 server
->acl_bitmask
= res
.acl_bitmask
;
2245 server
->fh_expire_type
= res
.fh_expire_type
;
2251 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2253 struct nfs4_exception exception
= { };
2256 err
= nfs4_handle_exception(server
,
2257 _nfs4_server_capabilities(server
, fhandle
),
2259 } while (exception
.retry
);
2263 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2264 struct nfs_fsinfo
*info
)
2266 struct nfs4_lookup_root_arg args
= {
2267 .bitmask
= nfs4_fattr_bitmap
,
2269 struct nfs4_lookup_res res
= {
2271 .fattr
= info
->fattr
,
2274 struct rpc_message msg
= {
2275 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2280 nfs_fattr_init(info
->fattr
);
2281 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2284 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2285 struct nfs_fsinfo
*info
)
2287 struct nfs4_exception exception
= { };
2290 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2293 case -NFS4ERR_WRONGSEC
:
2296 err
= nfs4_handle_exception(server
, err
, &exception
);
2298 } while (exception
.retry
);
2303 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2304 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2306 struct rpc_auth
*auth
;
2309 auth
= rpcauth_create(flavor
, server
->client
);
2314 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2319 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2320 struct nfs_fsinfo
*info
)
2322 int i
, len
, status
= 0;
2323 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2325 len
= gss_mech_list_pseudoflavors(&flav_array
[0]);
2326 flav_array
[len
] = RPC_AUTH_NULL
;
2329 for (i
= 0; i
< len
; i
++) {
2330 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2331 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2336 * -EACCESS could mean that the user doesn't have correct permissions
2337 * to access the mount. It could also mean that we tried to mount
2338 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2339 * existing mount programs don't handle -EACCES very well so it should
2340 * be mapped to -EPERM instead.
2342 if (status
== -EACCES
)
2348 * get the file handle for the "/" directory on the server
2350 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2351 struct nfs_fsinfo
*info
)
2353 int minor_version
= server
->nfs_client
->cl_minorversion
;
2354 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2355 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2357 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2358 * by nfs4_map_errors() as this function exits.
2360 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2362 status
= nfs4_server_capabilities(server
, fhandle
);
2364 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2365 return nfs4_map_errors(status
);
2368 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2369 struct nfs_fsinfo
*info
)
2372 struct nfs_fattr
*fattr
= info
->fattr
;
2374 error
= nfs4_server_capabilities(server
, mntfh
);
2376 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2380 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2382 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2386 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2387 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2388 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2394 * Get locations and (maybe) other attributes of a referral.
2395 * Note that we'll actually follow the referral later when
2396 * we detect fsid mismatch in inode revalidation
2398 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2399 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2400 struct nfs_fh
*fhandle
)
2402 int status
= -ENOMEM
;
2403 struct page
*page
= NULL
;
2404 struct nfs4_fs_locations
*locations
= NULL
;
2406 page
= alloc_page(GFP_KERNEL
);
2409 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2410 if (locations
== NULL
)
2413 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2416 /* Make sure server returned a different fsid for the referral */
2417 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2418 dprintk("%s: server did not return a different fsid for"
2419 " a referral at %s\n", __func__
, name
->name
);
2423 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2424 nfs_fixup_referral_attributes(&locations
->fattr
);
2426 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2427 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2428 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2436 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2438 struct nfs4_getattr_arg args
= {
2440 .bitmask
= server
->attr_bitmask
,
2442 struct nfs4_getattr_res res
= {
2446 struct rpc_message msg
= {
2447 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2452 nfs_fattr_init(fattr
);
2453 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2456 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2458 struct nfs4_exception exception
= { };
2461 err
= nfs4_handle_exception(server
,
2462 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2464 } while (exception
.retry
);
2469 * The file is not closed if it is opened due to the a request to change
2470 * the size of the file. The open call will not be needed once the
2471 * VFS layer lookup-intents are implemented.
2473 * Close is called when the inode is destroyed.
2474 * If we haven't opened the file for O_WRONLY, we
2475 * need to in the size_change case to obtain a stateid.
2478 * Because OPEN is always done by name in nfsv4, it is
2479 * possible that we opened a different file by the same
2480 * name. We can recognize this race condition, but we
2481 * can't do anything about it besides returning an error.
2483 * This will be fixed with VFS changes (lookup-intent).
2486 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2487 struct iattr
*sattr
)
2489 struct inode
*inode
= dentry
->d_inode
;
2490 struct rpc_cred
*cred
= NULL
;
2491 struct nfs4_state
*state
= NULL
;
2494 if (pnfs_ld_layoutret_on_setattr(inode
))
2495 pnfs_return_layout(inode
);
2497 nfs_fattr_init(fattr
);
2499 /* Search for an existing open(O_WRITE) file */
2500 if (sattr
->ia_valid
& ATTR_FILE
) {
2501 struct nfs_open_context
*ctx
;
2503 ctx
= nfs_file_open_context(sattr
->ia_file
);
2510 /* Deal with open(O_TRUNC) */
2511 if (sattr
->ia_valid
& ATTR_OPEN
)
2512 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2514 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2516 nfs_setattr_update_inode(inode
, sattr
);
2520 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2521 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2522 struct nfs_fattr
*fattr
)
2524 struct nfs_server
*server
= NFS_SERVER(dir
);
2526 struct nfs4_lookup_arg args
= {
2527 .bitmask
= server
->attr_bitmask
,
2528 .dir_fh
= NFS_FH(dir
),
2531 struct nfs4_lookup_res res
= {
2536 struct rpc_message msg
= {
2537 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2542 nfs_fattr_init(fattr
);
2544 dprintk("NFS call lookup %s\n", name
->name
);
2545 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2546 dprintk("NFS reply lookup: %d\n", status
);
2550 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2552 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2553 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2554 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2558 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2559 struct qstr
*name
, struct nfs_fh
*fhandle
,
2560 struct nfs_fattr
*fattr
)
2562 struct nfs4_exception exception
= { };
2563 struct rpc_clnt
*client
= *clnt
;
2566 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2568 case -NFS4ERR_BADNAME
:
2571 case -NFS4ERR_MOVED
:
2572 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2574 case -NFS4ERR_WRONGSEC
:
2576 if (client
!= *clnt
)
2579 client
= nfs4_create_sec_client(client
, dir
, name
);
2581 return PTR_ERR(client
);
2583 exception
.retry
= 1;
2586 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2588 } while (exception
.retry
);
2593 else if (client
!= *clnt
)
2594 rpc_shutdown_client(client
);
2599 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2600 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2603 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2605 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2606 if (client
!= NFS_CLIENT(dir
)) {
2607 rpc_shutdown_client(client
);
2608 nfs_fixup_secinfo_attributes(fattr
);
2614 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2615 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2618 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2620 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2622 rpc_shutdown_client(client
);
2623 return ERR_PTR(status
);
2628 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2630 struct nfs_server
*server
= NFS_SERVER(inode
);
2631 struct nfs4_accessargs args
= {
2632 .fh
= NFS_FH(inode
),
2633 .bitmask
= server
->cache_consistency_bitmask
,
2635 struct nfs4_accessres res
= {
2638 struct rpc_message msg
= {
2639 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2642 .rpc_cred
= entry
->cred
,
2644 int mode
= entry
->mask
;
2648 * Determine which access bits we want to ask for...
2650 if (mode
& MAY_READ
)
2651 args
.access
|= NFS4_ACCESS_READ
;
2652 if (S_ISDIR(inode
->i_mode
)) {
2653 if (mode
& MAY_WRITE
)
2654 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2655 if (mode
& MAY_EXEC
)
2656 args
.access
|= NFS4_ACCESS_LOOKUP
;
2658 if (mode
& MAY_WRITE
)
2659 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2660 if (mode
& MAY_EXEC
)
2661 args
.access
|= NFS4_ACCESS_EXECUTE
;
2664 res
.fattr
= nfs_alloc_fattr();
2665 if (res
.fattr
== NULL
)
2668 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2671 if (res
.access
& NFS4_ACCESS_READ
)
2672 entry
->mask
|= MAY_READ
;
2673 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2674 entry
->mask
|= MAY_WRITE
;
2675 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2676 entry
->mask
|= MAY_EXEC
;
2677 nfs_refresh_inode(inode
, res
.fattr
);
2679 nfs_free_fattr(res
.fattr
);
2683 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2685 struct nfs4_exception exception
= { };
2688 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2689 _nfs4_proc_access(inode
, entry
),
2691 } while (exception
.retry
);
2696 * TODO: For the time being, we don't try to get any attributes
2697 * along with any of the zero-copy operations READ, READDIR,
2700 * In the case of the first three, we want to put the GETATTR
2701 * after the read-type operation -- this is because it is hard
2702 * to predict the length of a GETATTR response in v4, and thus
2703 * align the READ data correctly. This means that the GETATTR
2704 * may end up partially falling into the page cache, and we should
2705 * shift it into the 'tail' of the xdr_buf before processing.
2706 * To do this efficiently, we need to know the total length
2707 * of data received, which doesn't seem to be available outside
2710 * In the case of WRITE, we also want to put the GETATTR after
2711 * the operation -- in this case because we want to make sure
2712 * we get the post-operation mtime and size. This means that
2713 * we can't use xdr_encode_pages() as written: we need a variant
2714 * of it which would leave room in the 'tail' iovec.
2716 * Both of these changes to the XDR layer would in fact be quite
2717 * minor, but I decided to leave them for a subsequent patch.
2719 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2720 unsigned int pgbase
, unsigned int pglen
)
2722 struct nfs4_readlink args
= {
2723 .fh
= NFS_FH(inode
),
2728 struct nfs4_readlink_res res
;
2729 struct rpc_message msg
= {
2730 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2735 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2738 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2739 unsigned int pgbase
, unsigned int pglen
)
2741 struct nfs4_exception exception
= { };
2744 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2745 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2747 } while (exception
.retry
);
2753 * We will need to arrange for the VFS layer to provide an atomic open.
2754 * Until then, this create/open method is prone to inefficiency and race
2755 * conditions due to the lookup, create, and open VFS calls from sys_open()
2756 * placed on the wire.
2758 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2759 * The file will be opened again in the subsequent VFS open call
2760 * (nfs4_proc_file_open).
2762 * The open for read will just hang around to be used by any process that
2763 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2767 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2768 int flags
, struct nfs_open_context
*ctx
)
2770 struct dentry
*de
= dentry
;
2771 struct nfs4_state
*state
;
2772 struct rpc_cred
*cred
= NULL
;
2781 sattr
->ia_mode
&= ~current_umask();
2782 state
= nfs4_do_open(dir
, de
, fmode
, flags
, sattr
, cred
);
2784 if (IS_ERR(state
)) {
2785 status
= PTR_ERR(state
);
2788 d_add(dentry
, igrab(state
->inode
));
2789 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2793 nfs4_close_sync(state
, fmode
);
2798 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2800 struct nfs_server
*server
= NFS_SERVER(dir
);
2801 struct nfs_removeargs args
= {
2803 .name
.len
= name
->len
,
2804 .name
.name
= name
->name
,
2806 struct nfs_removeres res
= {
2809 struct rpc_message msg
= {
2810 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2816 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2818 update_changeattr(dir
, &res
.cinfo
);
2822 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2824 struct nfs4_exception exception
= { };
2827 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2828 _nfs4_proc_remove(dir
, name
),
2830 } while (exception
.retry
);
2834 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2836 struct nfs_server
*server
= NFS_SERVER(dir
);
2837 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2838 struct nfs_removeres
*res
= msg
->rpc_resp
;
2840 res
->server
= server
;
2841 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2842 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
2845 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
2847 if (nfs4_setup_sequence(NFS_SERVER(data
->dir
),
2848 &data
->args
.seq_args
,
2852 rpc_call_start(task
);
2855 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2857 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2859 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2861 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2863 update_changeattr(dir
, &res
->cinfo
);
2867 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2869 struct nfs_server
*server
= NFS_SERVER(dir
);
2870 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2871 struct nfs_renameres
*res
= msg
->rpc_resp
;
2873 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2874 res
->server
= server
;
2875 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
2878 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
2880 if (nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
2881 &data
->args
.seq_args
,
2885 rpc_call_start(task
);
2888 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2889 struct inode
*new_dir
)
2891 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2893 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2895 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2898 update_changeattr(old_dir
, &res
->old_cinfo
);
2899 update_changeattr(new_dir
, &res
->new_cinfo
);
2903 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2904 struct inode
*new_dir
, struct qstr
*new_name
)
2906 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2907 struct nfs_renameargs arg
= {
2908 .old_dir
= NFS_FH(old_dir
),
2909 .new_dir
= NFS_FH(new_dir
),
2910 .old_name
= old_name
,
2911 .new_name
= new_name
,
2913 struct nfs_renameres res
= {
2916 struct rpc_message msg
= {
2917 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2921 int status
= -ENOMEM
;
2923 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2925 update_changeattr(old_dir
, &res
.old_cinfo
);
2926 update_changeattr(new_dir
, &res
.new_cinfo
);
2931 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2932 struct inode
*new_dir
, struct qstr
*new_name
)
2934 struct nfs4_exception exception
= { };
2937 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2938 _nfs4_proc_rename(old_dir
, old_name
,
2941 } while (exception
.retry
);
2945 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2947 struct nfs_server
*server
= NFS_SERVER(inode
);
2948 struct nfs4_link_arg arg
= {
2949 .fh
= NFS_FH(inode
),
2950 .dir_fh
= NFS_FH(dir
),
2952 .bitmask
= server
->attr_bitmask
,
2954 struct nfs4_link_res res
= {
2957 struct rpc_message msg
= {
2958 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2962 int status
= -ENOMEM
;
2964 res
.fattr
= nfs_alloc_fattr();
2965 if (res
.fattr
== NULL
)
2968 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2970 update_changeattr(dir
, &res
.cinfo
);
2971 nfs_post_op_update_inode(inode
, res
.fattr
);
2974 nfs_free_fattr(res
.fattr
);
2978 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2980 struct nfs4_exception exception
= { };
2983 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2984 _nfs4_proc_link(inode
, dir
, name
),
2986 } while (exception
.retry
);
2990 struct nfs4_createdata
{
2991 struct rpc_message msg
;
2992 struct nfs4_create_arg arg
;
2993 struct nfs4_create_res res
;
2995 struct nfs_fattr fattr
;
2998 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2999 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3001 struct nfs4_createdata
*data
;
3003 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3005 struct nfs_server
*server
= NFS_SERVER(dir
);
3007 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3008 data
->msg
.rpc_argp
= &data
->arg
;
3009 data
->msg
.rpc_resp
= &data
->res
;
3010 data
->arg
.dir_fh
= NFS_FH(dir
);
3011 data
->arg
.server
= server
;
3012 data
->arg
.name
= name
;
3013 data
->arg
.attrs
= sattr
;
3014 data
->arg
.ftype
= ftype
;
3015 data
->arg
.bitmask
= server
->attr_bitmask
;
3016 data
->res
.server
= server
;
3017 data
->res
.fh
= &data
->fh
;
3018 data
->res
.fattr
= &data
->fattr
;
3019 nfs_fattr_init(data
->res
.fattr
);
3024 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3026 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3027 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3029 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3030 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3035 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3040 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3041 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3043 struct nfs4_createdata
*data
;
3044 int status
= -ENAMETOOLONG
;
3046 if (len
> NFS4_MAXPATHLEN
)
3050 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3054 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3055 data
->arg
.u
.symlink
.pages
= &page
;
3056 data
->arg
.u
.symlink
.len
= len
;
3058 status
= nfs4_do_create(dir
, dentry
, data
);
3060 nfs4_free_createdata(data
);
3065 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3066 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3068 struct nfs4_exception exception
= { };
3071 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3072 _nfs4_proc_symlink(dir
, dentry
, page
,
3075 } while (exception
.retry
);
3079 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3080 struct iattr
*sattr
)
3082 struct nfs4_createdata
*data
;
3083 int status
= -ENOMEM
;
3085 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3089 status
= nfs4_do_create(dir
, dentry
, data
);
3091 nfs4_free_createdata(data
);
3096 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3097 struct iattr
*sattr
)
3099 struct nfs4_exception exception
= { };
3102 sattr
->ia_mode
&= ~current_umask();
3104 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3105 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3107 } while (exception
.retry
);
3111 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3112 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3114 struct inode
*dir
= dentry
->d_inode
;
3115 struct nfs4_readdir_arg args
= {
3120 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3123 struct nfs4_readdir_res res
;
3124 struct rpc_message msg
= {
3125 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3132 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3133 dentry
->d_parent
->d_name
.name
,
3134 dentry
->d_name
.name
,
3135 (unsigned long long)cookie
);
3136 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
3137 res
.pgbase
= args
.pgbase
;
3138 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3140 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3141 status
+= args
.pgbase
;
3144 nfs_invalidate_atime(dir
);
3146 dprintk("%s: returns %d\n", __func__
, status
);
3150 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3151 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3153 struct nfs4_exception exception
= { };
3156 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3157 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3158 pages
, count
, plus
),
3160 } while (exception
.retry
);
3164 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3165 struct iattr
*sattr
, dev_t rdev
)
3167 struct nfs4_createdata
*data
;
3168 int mode
= sattr
->ia_mode
;
3169 int status
= -ENOMEM
;
3171 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
3172 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
3174 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3179 data
->arg
.ftype
= NF4FIFO
;
3180 else if (S_ISBLK(mode
)) {
3181 data
->arg
.ftype
= NF4BLK
;
3182 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3183 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3185 else if (S_ISCHR(mode
)) {
3186 data
->arg
.ftype
= NF4CHR
;
3187 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3188 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3191 status
= nfs4_do_create(dir
, dentry
, data
);
3193 nfs4_free_createdata(data
);
3198 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3199 struct iattr
*sattr
, dev_t rdev
)
3201 struct nfs4_exception exception
= { };
3204 sattr
->ia_mode
&= ~current_umask();
3206 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3207 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3209 } while (exception
.retry
);
3213 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3214 struct nfs_fsstat
*fsstat
)
3216 struct nfs4_statfs_arg args
= {
3218 .bitmask
= server
->attr_bitmask
,
3220 struct nfs4_statfs_res res
= {
3223 struct rpc_message msg
= {
3224 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3229 nfs_fattr_init(fsstat
->fattr
);
3230 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3233 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3235 struct nfs4_exception exception
= { };
3238 err
= nfs4_handle_exception(server
,
3239 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3241 } while (exception
.retry
);
3245 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3246 struct nfs_fsinfo
*fsinfo
)
3248 struct nfs4_fsinfo_arg args
= {
3250 .bitmask
= server
->attr_bitmask
,
3252 struct nfs4_fsinfo_res res
= {
3255 struct rpc_message msg
= {
3256 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3261 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3264 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3266 struct nfs4_exception exception
= { };
3270 err
= nfs4_handle_exception(server
,
3271 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3273 } while (exception
.retry
);
3277 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3279 nfs_fattr_init(fsinfo
->fattr
);
3280 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3283 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3284 struct nfs_pathconf
*pathconf
)
3286 struct nfs4_pathconf_arg args
= {
3288 .bitmask
= server
->attr_bitmask
,
3290 struct nfs4_pathconf_res res
= {
3291 .pathconf
= pathconf
,
3293 struct rpc_message msg
= {
3294 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3299 /* None of the pathconf attributes are mandatory to implement */
3300 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3301 memset(pathconf
, 0, sizeof(*pathconf
));
3305 nfs_fattr_init(pathconf
->fattr
);
3306 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3309 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3310 struct nfs_pathconf
*pathconf
)
3312 struct nfs4_exception exception
= { };
3316 err
= nfs4_handle_exception(server
,
3317 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3319 } while (exception
.retry
);
3323 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3325 nfs_invalidate_atime(data
->header
->inode
);
3328 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3330 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3332 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3333 rpc_restart_call_prepare(task
);
3337 __nfs4_read_done_cb(data
);
3338 if (task
->tk_status
> 0)
3339 renew_lease(server
, data
->timestamp
);
3343 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3346 dprintk("--> %s\n", __func__
);
3348 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3351 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3352 nfs4_read_done_cb(task
, data
);
3355 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3357 data
->timestamp
= jiffies
;
3358 data
->read_done_cb
= nfs4_read_done_cb
;
3359 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3360 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3363 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3365 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3366 &data
->args
.seq_args
,
3370 rpc_call_start(task
);
3373 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3375 struct inode
*inode
= data
->header
->inode
;
3377 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3378 rpc_restart_call_prepare(task
);
3381 if (task
->tk_status
>= 0) {
3382 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3383 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3388 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3390 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3392 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3393 nfs4_write_done_cb(task
, data
);
3397 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3399 const struct nfs_pgio_header
*hdr
= data
->header
;
3401 /* Don't request attributes for pNFS or O_DIRECT writes */
3402 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3404 /* Otherwise, request attributes if and only if we don't hold
3407 return nfs_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3410 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3412 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3414 if (!nfs4_write_need_cache_consistency_data(data
)) {
3415 data
->args
.bitmask
= NULL
;
3416 data
->res
.fattr
= NULL
;
3418 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3420 if (!data
->write_done_cb
)
3421 data
->write_done_cb
= nfs4_write_done_cb
;
3422 data
->res
.server
= server
;
3423 data
->timestamp
= jiffies
;
3425 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3426 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3429 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3431 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3432 &data
->args
.seq_args
,
3436 rpc_call_start(task
);
3439 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3441 if (nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3442 &data
->args
.seq_args
,
3446 rpc_call_start(task
);
3449 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3451 struct inode
*inode
= data
->inode
;
3453 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3454 rpc_restart_call_prepare(task
);
3460 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3462 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3464 return data
->commit_done_cb(task
, data
);
3467 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3469 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3471 if (data
->commit_done_cb
== NULL
)
3472 data
->commit_done_cb
= nfs4_commit_done_cb
;
3473 data
->res
.server
= server
;
3474 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3475 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3478 struct nfs4_renewdata
{
3479 struct nfs_client
*client
;
3480 unsigned long timestamp
;
3484 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3485 * standalone procedure for queueing an asynchronous RENEW.
3487 static void nfs4_renew_release(void *calldata
)
3489 struct nfs4_renewdata
*data
= calldata
;
3490 struct nfs_client
*clp
= data
->client
;
3492 if (atomic_read(&clp
->cl_count
) > 1)
3493 nfs4_schedule_state_renewal(clp
);
3494 nfs_put_client(clp
);
3498 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3500 struct nfs4_renewdata
*data
= calldata
;
3501 struct nfs_client
*clp
= data
->client
;
3502 unsigned long timestamp
= data
->timestamp
;
3504 if (task
->tk_status
< 0) {
3505 /* Unless we're shutting down, schedule state recovery! */
3506 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3508 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3509 nfs4_schedule_lease_recovery(clp
);
3512 nfs4_schedule_path_down_recovery(clp
);
3514 do_renew_lease(clp
, timestamp
);
3517 static const struct rpc_call_ops nfs4_renew_ops
= {
3518 .rpc_call_done
= nfs4_renew_done
,
3519 .rpc_release
= nfs4_renew_release
,
3522 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3524 struct rpc_message msg
= {
3525 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3529 struct nfs4_renewdata
*data
;
3531 if (renew_flags
== 0)
3533 if (!atomic_inc_not_zero(&clp
->cl_count
))
3535 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3539 data
->timestamp
= jiffies
;
3540 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3541 &nfs4_renew_ops
, data
);
3544 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3546 struct rpc_message msg
= {
3547 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3551 unsigned long now
= jiffies
;
3554 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3557 do_renew_lease(clp
, now
);
3561 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3563 return (server
->caps
& NFS_CAP_ACLS
)
3564 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3565 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3568 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3569 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3572 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3574 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3575 struct page
**pages
, unsigned int *pgbase
)
3577 struct page
*newpage
, **spages
;
3583 len
= min_t(size_t, PAGE_CACHE_SIZE
, buflen
);
3584 newpage
= alloc_page(GFP_KERNEL
);
3586 if (newpage
== NULL
)
3588 memcpy(page_address(newpage
), buf
, len
);
3593 } while (buflen
!= 0);
3599 __free_page(spages
[rc
-1]);
3603 struct nfs4_cached_acl
{
3609 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3611 struct nfs_inode
*nfsi
= NFS_I(inode
);
3613 spin_lock(&inode
->i_lock
);
3614 kfree(nfsi
->nfs4_acl
);
3615 nfsi
->nfs4_acl
= acl
;
3616 spin_unlock(&inode
->i_lock
);
3619 static void nfs4_zap_acl_attr(struct inode
*inode
)
3621 nfs4_set_cached_acl(inode
, NULL
);
3624 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3626 struct nfs_inode
*nfsi
= NFS_I(inode
);
3627 struct nfs4_cached_acl
*acl
;
3630 spin_lock(&inode
->i_lock
);
3631 acl
= nfsi
->nfs4_acl
;
3634 if (buf
== NULL
) /* user is just asking for length */
3636 if (acl
->cached
== 0)
3638 ret
= -ERANGE
; /* see getxattr(2) man page */
3639 if (acl
->len
> buflen
)
3641 memcpy(buf
, acl
->data
, acl
->len
);
3645 spin_unlock(&inode
->i_lock
);
3649 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3651 struct nfs4_cached_acl
*acl
;
3653 if (pages
&& acl_len
<= PAGE_SIZE
) {
3654 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3658 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3660 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3667 nfs4_set_cached_acl(inode
, acl
);
3671 * The getxattr API returns the required buffer length when called with a
3672 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3673 * the required buf. On a NULL buf, we send a page of data to the server
3674 * guessing that the ACL request can be serviced by a page. If so, we cache
3675 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3676 * the cache. If not so, we throw away the page, and cache the required
3677 * length. The next getxattr call will then produce another round trip to
3678 * the server, this time with the input buf of the required size.
3680 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3682 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3683 struct nfs_getaclargs args
= {
3684 .fh
= NFS_FH(inode
),
3688 struct nfs_getaclres res
= {
3691 struct rpc_message msg
= {
3692 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3696 int ret
= -ENOMEM
, npages
, i
, acl_len
= 0;
3698 npages
= (buflen
+ PAGE_SIZE
- 1) >> PAGE_SHIFT
;
3699 /* As long as we're doing a round trip to the server anyway,
3700 * let's be prepared for a page of acl data. */
3704 /* Add an extra page to handle the bitmap returned */
3707 for (i
= 0; i
< npages
; i
++) {
3708 pages
[i
] = alloc_page(GFP_KERNEL
);
3713 /* for decoding across pages */
3714 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3715 if (!res
.acl_scratch
)
3718 args
.acl_len
= npages
* PAGE_SIZE
;
3719 args
.acl_pgbase
= 0;
3721 /* Let decode_getfacl know not to fail if the ACL data is larger than
3722 * the page we send as a guess */
3724 res
.acl_flags
|= NFS4_ACL_LEN_REQUEST
;
3726 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3727 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3728 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3729 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3733 acl_len
= res
.acl_len
- res
.acl_data_offset
;
3734 if (acl_len
> args
.acl_len
)
3735 nfs4_write_cached_acl(inode
, NULL
, 0, acl_len
);
3737 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
,
3741 if (acl_len
> buflen
)
3743 _copy_from_pages(buf
, pages
, res
.acl_data_offset
,
3748 for (i
= 0; i
< npages
; i
++)
3750 __free_page(pages
[i
]);
3751 if (res
.acl_scratch
)
3752 __free_page(res
.acl_scratch
);
3756 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3758 struct nfs4_exception exception
= { };
3761 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3764 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3765 } while (exception
.retry
);
3769 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3771 struct nfs_server
*server
= NFS_SERVER(inode
);
3774 if (!nfs4_server_supports_acls(server
))
3776 ret
= nfs_revalidate_inode(server
, inode
);
3779 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3780 nfs_zap_acl_cache(inode
);
3781 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3783 /* -ENOENT is returned if there is no ACL or if there is an ACL
3784 * but no cached acl data, just the acl length */
3786 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3789 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3791 struct nfs_server
*server
= NFS_SERVER(inode
);
3792 struct page
*pages
[NFS4ACL_MAXPAGES
];
3793 struct nfs_setaclargs arg
= {
3794 .fh
= NFS_FH(inode
),
3798 struct nfs_setaclres res
;
3799 struct rpc_message msg
= {
3800 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3806 if (!nfs4_server_supports_acls(server
))
3808 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3811 nfs_inode_return_delegation(inode
);
3812 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3815 * Free each page after tx, so the only ref left is
3816 * held by the network stack
3819 put_page(pages
[i
-1]);
3822 * Acl update can result in inode attribute update.
3823 * so mark the attribute cache invalid.
3825 spin_lock(&inode
->i_lock
);
3826 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3827 spin_unlock(&inode
->i_lock
);
3828 nfs_access_zap_cache(inode
);
3829 nfs_zap_acl_cache(inode
);
3833 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3835 struct nfs4_exception exception
= { };
3838 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3839 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3841 } while (exception
.retry
);
3846 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3848 struct nfs_client
*clp
= server
->nfs_client
;
3850 if (task
->tk_status
>= 0)
3852 switch(task
->tk_status
) {
3853 case -NFS4ERR_DELEG_REVOKED
:
3854 case -NFS4ERR_ADMIN_REVOKED
:
3855 case -NFS4ERR_BAD_STATEID
:
3858 nfs_remove_bad_delegation(state
->inode
);
3859 case -NFS4ERR_OPENMODE
:
3862 nfs4_schedule_stateid_recovery(server
, state
);
3863 goto wait_on_recovery
;
3864 case -NFS4ERR_EXPIRED
:
3866 nfs4_schedule_stateid_recovery(server
, state
);
3867 case -NFS4ERR_STALE_STATEID
:
3868 case -NFS4ERR_STALE_CLIENTID
:
3869 nfs4_schedule_lease_recovery(clp
);
3870 goto wait_on_recovery
;
3871 #if defined(CONFIG_NFS_V4_1)
3872 case -NFS4ERR_BADSESSION
:
3873 case -NFS4ERR_BADSLOT
:
3874 case -NFS4ERR_BAD_HIGH_SLOT
:
3875 case -NFS4ERR_DEADSESSION
:
3876 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3877 case -NFS4ERR_SEQ_FALSE_RETRY
:
3878 case -NFS4ERR_SEQ_MISORDERED
:
3879 dprintk("%s ERROR %d, Reset session\n", __func__
,
3881 nfs4_schedule_session_recovery(clp
->cl_session
);
3882 task
->tk_status
= 0;
3884 #endif /* CONFIG_NFS_V4_1 */
3885 case -NFS4ERR_DELAY
:
3886 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3887 case -NFS4ERR_GRACE
:
3889 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3890 task
->tk_status
= 0;
3892 case -NFS4ERR_RETRY_UNCACHED_REP
:
3893 case -NFS4ERR_OLD_STATEID
:
3894 task
->tk_status
= 0;
3897 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3900 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3901 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3902 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3903 task
->tk_status
= 0;
3907 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
3908 nfs4_verifier
*bootverf
)
3912 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
3913 /* An impossible timestamp guarantees this value
3914 * will never match a generated boot time. */
3916 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
3918 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
3919 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
3920 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
3922 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
3925 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
3926 unsigned short port
, struct rpc_cred
*cred
,
3927 struct nfs4_setclientid_res
*res
)
3929 nfs4_verifier sc_verifier
;
3930 struct nfs4_setclientid setclientid
= {
3931 .sc_verifier
= &sc_verifier
,
3933 .sc_cb_ident
= clp
->cl_cb_ident
,
3935 struct rpc_message msg
= {
3936 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3937 .rpc_argp
= &setclientid
,
3944 nfs4_init_boot_verifier(clp
, &sc_verifier
);
3948 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3949 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3951 rpc_peeraddr2str(clp
->cl_rpcclient
,
3953 rpc_peeraddr2str(clp
->cl_rpcclient
,
3955 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3956 clp
->cl_id_uniquifier
);
3957 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3958 sizeof(setclientid
.sc_netid
),
3959 rpc_peeraddr2str(clp
->cl_rpcclient
,
3960 RPC_DISPLAY_NETID
));
3961 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3962 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3963 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3966 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3967 if (status
!= -NFS4ERR_CLID_INUSE
)
3970 ++clp
->cl_id_uniquifier
;
3974 ssleep(clp
->cl_lease_time
/ HZ
+ 1);
3979 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3980 struct nfs4_setclientid_res
*arg
,
3981 struct rpc_cred
*cred
)
3983 struct nfs_fsinfo fsinfo
;
3984 struct rpc_message msg
= {
3985 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3987 .rpc_resp
= &fsinfo
,
3994 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3996 spin_lock(&clp
->cl_lock
);
3997 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3998 clp
->cl_last_renewal
= now
;
3999 spin_unlock(&clp
->cl_lock
);
4004 struct nfs4_delegreturndata
{
4005 struct nfs4_delegreturnargs args
;
4006 struct nfs4_delegreturnres res
;
4008 nfs4_stateid stateid
;
4009 unsigned long timestamp
;
4010 struct nfs_fattr fattr
;
4014 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4016 struct nfs4_delegreturndata
*data
= calldata
;
4018 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4021 switch (task
->tk_status
) {
4022 case -NFS4ERR_STALE_STATEID
:
4023 case -NFS4ERR_EXPIRED
:
4025 renew_lease(data
->res
.server
, data
->timestamp
);
4028 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4030 rpc_restart_call_prepare(task
);
4034 data
->rpc_status
= task
->tk_status
;
4037 static void nfs4_delegreturn_release(void *calldata
)
4042 #if defined(CONFIG_NFS_V4_1)
4043 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4045 struct nfs4_delegreturndata
*d_data
;
4047 d_data
= (struct nfs4_delegreturndata
*)data
;
4049 if (nfs4_setup_sequence(d_data
->res
.server
,
4050 &d_data
->args
.seq_args
,
4051 &d_data
->res
.seq_res
, task
))
4053 rpc_call_start(task
);
4055 #endif /* CONFIG_NFS_V4_1 */
4057 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4058 #if defined(CONFIG_NFS_V4_1)
4059 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4060 #endif /* CONFIG_NFS_V4_1 */
4061 .rpc_call_done
= nfs4_delegreturn_done
,
4062 .rpc_release
= nfs4_delegreturn_release
,
4065 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4067 struct nfs4_delegreturndata
*data
;
4068 struct nfs_server
*server
= NFS_SERVER(inode
);
4069 struct rpc_task
*task
;
4070 struct rpc_message msg
= {
4071 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4074 struct rpc_task_setup task_setup_data
= {
4075 .rpc_client
= server
->client
,
4076 .rpc_message
= &msg
,
4077 .callback_ops
= &nfs4_delegreturn_ops
,
4078 .flags
= RPC_TASK_ASYNC
,
4082 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4085 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4086 data
->args
.fhandle
= &data
->fh
;
4087 data
->args
.stateid
= &data
->stateid
;
4088 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4089 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4090 nfs4_stateid_copy(&data
->stateid
, stateid
);
4091 data
->res
.fattr
= &data
->fattr
;
4092 data
->res
.server
= server
;
4093 nfs_fattr_init(data
->res
.fattr
);
4094 data
->timestamp
= jiffies
;
4095 data
->rpc_status
= 0;
4097 task_setup_data
.callback_data
= data
;
4098 msg
.rpc_argp
= &data
->args
;
4099 msg
.rpc_resp
= &data
->res
;
4100 task
= rpc_run_task(&task_setup_data
);
4102 return PTR_ERR(task
);
4105 status
= nfs4_wait_for_completion_rpc_task(task
);
4108 status
= data
->rpc_status
;
4110 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4112 nfs_refresh_inode(inode
, &data
->fattr
);
4118 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4120 struct nfs_server
*server
= NFS_SERVER(inode
);
4121 struct nfs4_exception exception
= { };
4124 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4126 case -NFS4ERR_STALE_STATEID
:
4127 case -NFS4ERR_EXPIRED
:
4131 err
= nfs4_handle_exception(server
, err
, &exception
);
4132 } while (exception
.retry
);
4136 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4137 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4140 * sleep, with exponential backoff, and retry the LOCK operation.
4142 static unsigned long
4143 nfs4_set_lock_task_retry(unsigned long timeout
)
4145 freezable_schedule_timeout_killable(timeout
);
4147 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4148 return NFS4_LOCK_MAXTIMEOUT
;
4152 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4154 struct inode
*inode
= state
->inode
;
4155 struct nfs_server
*server
= NFS_SERVER(inode
);
4156 struct nfs_client
*clp
= server
->nfs_client
;
4157 struct nfs_lockt_args arg
= {
4158 .fh
= NFS_FH(inode
),
4161 struct nfs_lockt_res res
= {
4164 struct rpc_message msg
= {
4165 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4168 .rpc_cred
= state
->owner
->so_cred
,
4170 struct nfs4_lock_state
*lsp
;
4173 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4174 status
= nfs4_set_lock_state(state
, request
);
4177 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4178 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4179 arg
.lock_owner
.s_dev
= server
->s_dev
;
4180 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4183 request
->fl_type
= F_UNLCK
;
4185 case -NFS4ERR_DENIED
:
4188 request
->fl_ops
->fl_release_private(request
);
4193 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4195 struct nfs4_exception exception
= { };
4199 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4200 _nfs4_proc_getlk(state
, cmd
, request
),
4202 } while (exception
.retry
);
4206 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4209 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4211 res
= posix_lock_file_wait(file
, fl
);
4214 res
= flock_lock_file_wait(file
, fl
);
4222 struct nfs4_unlockdata
{
4223 struct nfs_locku_args arg
;
4224 struct nfs_locku_res res
;
4225 struct nfs4_lock_state
*lsp
;
4226 struct nfs_open_context
*ctx
;
4227 struct file_lock fl
;
4228 const struct nfs_server
*server
;
4229 unsigned long timestamp
;
4232 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4233 struct nfs_open_context
*ctx
,
4234 struct nfs4_lock_state
*lsp
,
4235 struct nfs_seqid
*seqid
)
4237 struct nfs4_unlockdata
*p
;
4238 struct inode
*inode
= lsp
->ls_state
->inode
;
4240 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4243 p
->arg
.fh
= NFS_FH(inode
);
4245 p
->arg
.seqid
= seqid
;
4246 p
->res
.seqid
= seqid
;
4247 p
->arg
.stateid
= &lsp
->ls_stateid
;
4249 atomic_inc(&lsp
->ls_count
);
4250 /* Ensure we don't close file until we're done freeing locks! */
4251 p
->ctx
= get_nfs_open_context(ctx
);
4252 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4253 p
->server
= NFS_SERVER(inode
);
4257 static void nfs4_locku_release_calldata(void *data
)
4259 struct nfs4_unlockdata
*calldata
= data
;
4260 nfs_free_seqid(calldata
->arg
.seqid
);
4261 nfs4_put_lock_state(calldata
->lsp
);
4262 put_nfs_open_context(calldata
->ctx
);
4266 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4268 struct nfs4_unlockdata
*calldata
= data
;
4270 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4272 switch (task
->tk_status
) {
4274 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4275 &calldata
->res
.stateid
);
4276 renew_lease(calldata
->server
, calldata
->timestamp
);
4278 case -NFS4ERR_BAD_STATEID
:
4279 case -NFS4ERR_OLD_STATEID
:
4280 case -NFS4ERR_STALE_STATEID
:
4281 case -NFS4ERR_EXPIRED
:
4284 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4285 rpc_restart_call_prepare(task
);
4289 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4291 struct nfs4_unlockdata
*calldata
= data
;
4293 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4295 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
4296 /* Note: exit _without_ running nfs4_locku_done */
4297 task
->tk_action
= NULL
;
4300 calldata
->timestamp
= jiffies
;
4301 if (nfs4_setup_sequence(calldata
->server
,
4302 &calldata
->arg
.seq_args
,
4303 &calldata
->res
.seq_res
, task
))
4305 rpc_call_start(task
);
4308 static const struct rpc_call_ops nfs4_locku_ops
= {
4309 .rpc_call_prepare
= nfs4_locku_prepare
,
4310 .rpc_call_done
= nfs4_locku_done
,
4311 .rpc_release
= nfs4_locku_release_calldata
,
4314 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4315 struct nfs_open_context
*ctx
,
4316 struct nfs4_lock_state
*lsp
,
4317 struct nfs_seqid
*seqid
)
4319 struct nfs4_unlockdata
*data
;
4320 struct rpc_message msg
= {
4321 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4322 .rpc_cred
= ctx
->cred
,
4324 struct rpc_task_setup task_setup_data
= {
4325 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4326 .rpc_message
= &msg
,
4327 .callback_ops
= &nfs4_locku_ops
,
4328 .workqueue
= nfsiod_workqueue
,
4329 .flags
= RPC_TASK_ASYNC
,
4332 /* Ensure this is an unlock - when canceling a lock, the
4333 * canceled lock is passed in, and it won't be an unlock.
4335 fl
->fl_type
= F_UNLCK
;
4337 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4339 nfs_free_seqid(seqid
);
4340 return ERR_PTR(-ENOMEM
);
4343 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4344 msg
.rpc_argp
= &data
->arg
;
4345 msg
.rpc_resp
= &data
->res
;
4346 task_setup_data
.callback_data
= data
;
4347 return rpc_run_task(&task_setup_data
);
4350 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4352 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4353 struct nfs_seqid
*seqid
;
4354 struct nfs4_lock_state
*lsp
;
4355 struct rpc_task
*task
;
4357 unsigned char fl_flags
= request
->fl_flags
;
4359 status
= nfs4_set_lock_state(state
, request
);
4360 /* Unlock _before_ we do the RPC call */
4361 request
->fl_flags
|= FL_EXISTS
;
4362 down_read(&nfsi
->rwsem
);
4363 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4364 up_read(&nfsi
->rwsem
);
4367 up_read(&nfsi
->rwsem
);
4370 /* Is this a delegated lock? */
4371 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4373 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4374 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4378 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4379 status
= PTR_ERR(task
);
4382 status
= nfs4_wait_for_completion_rpc_task(task
);
4385 request
->fl_flags
= fl_flags
;
4389 struct nfs4_lockdata
{
4390 struct nfs_lock_args arg
;
4391 struct nfs_lock_res res
;
4392 struct nfs4_lock_state
*lsp
;
4393 struct nfs_open_context
*ctx
;
4394 struct file_lock fl
;
4395 unsigned long timestamp
;
4398 struct nfs_server
*server
;
4401 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4402 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4405 struct nfs4_lockdata
*p
;
4406 struct inode
*inode
= lsp
->ls_state
->inode
;
4407 struct nfs_server
*server
= NFS_SERVER(inode
);
4409 p
= kzalloc(sizeof(*p
), gfp_mask
);
4413 p
->arg
.fh
= NFS_FH(inode
);
4415 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4416 if (p
->arg
.open_seqid
== NULL
)
4418 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4419 if (p
->arg
.lock_seqid
== NULL
)
4420 goto out_free_seqid
;
4421 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4422 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4423 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4424 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4425 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4428 atomic_inc(&lsp
->ls_count
);
4429 p
->ctx
= get_nfs_open_context(ctx
);
4430 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4433 nfs_free_seqid(p
->arg
.open_seqid
);
4439 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4441 struct nfs4_lockdata
*data
= calldata
;
4442 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4444 dprintk("%s: begin!\n", __func__
);
4445 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4447 /* Do we need to do an open_to_lock_owner? */
4448 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4449 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4451 data
->arg
.open_stateid
= &state
->stateid
;
4452 data
->arg
.new_lock_owner
= 1;
4453 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4455 data
->arg
.new_lock_owner
= 0;
4456 data
->timestamp
= jiffies
;
4457 if (nfs4_setup_sequence(data
->server
,
4458 &data
->arg
.seq_args
,
4459 &data
->res
.seq_res
, task
))
4461 rpc_call_start(task
);
4462 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4465 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4467 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4468 nfs4_lock_prepare(task
, calldata
);
4471 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4473 struct nfs4_lockdata
*data
= calldata
;
4475 dprintk("%s: begin!\n", __func__
);
4477 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4480 data
->rpc_status
= task
->tk_status
;
4481 if (data
->arg
.new_lock_owner
!= 0) {
4482 if (data
->rpc_status
== 0)
4483 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4487 if (data
->rpc_status
== 0) {
4488 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4489 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4490 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4493 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4496 static void nfs4_lock_release(void *calldata
)
4498 struct nfs4_lockdata
*data
= calldata
;
4500 dprintk("%s: begin!\n", __func__
);
4501 nfs_free_seqid(data
->arg
.open_seqid
);
4502 if (data
->cancelled
!= 0) {
4503 struct rpc_task
*task
;
4504 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4505 data
->arg
.lock_seqid
);
4507 rpc_put_task_async(task
);
4508 dprintk("%s: cancelling lock!\n", __func__
);
4510 nfs_free_seqid(data
->arg
.lock_seqid
);
4511 nfs4_put_lock_state(data
->lsp
);
4512 put_nfs_open_context(data
->ctx
);
4514 dprintk("%s: done!\n", __func__
);
4517 static const struct rpc_call_ops nfs4_lock_ops
= {
4518 .rpc_call_prepare
= nfs4_lock_prepare
,
4519 .rpc_call_done
= nfs4_lock_done
,
4520 .rpc_release
= nfs4_lock_release
,
4523 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4524 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4525 .rpc_call_done
= nfs4_lock_done
,
4526 .rpc_release
= nfs4_lock_release
,
4529 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4532 case -NFS4ERR_ADMIN_REVOKED
:
4533 case -NFS4ERR_BAD_STATEID
:
4534 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4535 if (new_lock_owner
!= 0 ||
4536 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4537 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4539 case -NFS4ERR_STALE_STATEID
:
4540 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4541 case -NFS4ERR_EXPIRED
:
4542 nfs4_schedule_lease_recovery(server
->nfs_client
);
4546 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4548 struct nfs4_lockdata
*data
;
4549 struct rpc_task
*task
;
4550 struct rpc_message msg
= {
4551 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4552 .rpc_cred
= state
->owner
->so_cred
,
4554 struct rpc_task_setup task_setup_data
= {
4555 .rpc_client
= NFS_CLIENT(state
->inode
),
4556 .rpc_message
= &msg
,
4557 .callback_ops
= &nfs4_lock_ops
,
4558 .workqueue
= nfsiod_workqueue
,
4559 .flags
= RPC_TASK_ASYNC
,
4563 dprintk("%s: begin!\n", __func__
);
4564 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4565 fl
->fl_u
.nfs4_fl
.owner
,
4566 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4570 data
->arg
.block
= 1;
4571 if (recovery_type
> NFS_LOCK_NEW
) {
4572 if (recovery_type
== NFS_LOCK_RECLAIM
)
4573 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4574 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4576 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4577 msg
.rpc_argp
= &data
->arg
;
4578 msg
.rpc_resp
= &data
->res
;
4579 task_setup_data
.callback_data
= data
;
4580 task
= rpc_run_task(&task_setup_data
);
4582 return PTR_ERR(task
);
4583 ret
= nfs4_wait_for_completion_rpc_task(task
);
4585 ret
= data
->rpc_status
;
4587 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4588 data
->arg
.new_lock_owner
, ret
);
4590 data
->cancelled
= 1;
4592 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4596 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4598 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4599 struct nfs4_exception exception
= {
4600 .inode
= state
->inode
,
4605 /* Cache the lock if possible... */
4606 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4608 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4609 if (err
!= -NFS4ERR_DELAY
)
4611 nfs4_handle_exception(server
, err
, &exception
);
4612 } while (exception
.retry
);
4616 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4618 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4619 struct nfs4_exception exception
= {
4620 .inode
= state
->inode
,
4624 err
= nfs4_set_lock_state(state
, request
);
4628 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4630 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4634 case -NFS4ERR_GRACE
:
4635 case -NFS4ERR_DELAY
:
4636 nfs4_handle_exception(server
, err
, &exception
);
4639 } while (exception
.retry
);
4644 #if defined(CONFIG_NFS_V4_1)
4645 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4647 int status
, ret
= NFS_OK
;
4648 struct nfs4_lock_state
*lsp
;
4649 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4651 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4652 if (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) {
4653 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4654 if (status
!= NFS_OK
) {
4655 nfs41_free_stateid(server
, &lsp
->ls_stateid
);
4656 lsp
->ls_flags
&= ~NFS_LOCK_INITIALIZED
;
4665 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4667 int status
= NFS_OK
;
4669 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4670 status
= nfs41_check_expired_locks(state
);
4671 if (status
== NFS_OK
)
4673 return nfs4_lock_expired(state
, request
);
4677 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4679 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4680 unsigned char fl_flags
= request
->fl_flags
;
4681 int status
= -ENOLCK
;
4683 if ((fl_flags
& FL_POSIX
) &&
4684 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4686 /* Is this a delegated open? */
4687 status
= nfs4_set_lock_state(state
, request
);
4690 request
->fl_flags
|= FL_ACCESS
;
4691 status
= do_vfs_lock(request
->fl_file
, request
);
4694 down_read(&nfsi
->rwsem
);
4695 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4696 /* Yes: cache locks! */
4697 /* ...but avoid races with delegation recall... */
4698 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4699 status
= do_vfs_lock(request
->fl_file
, request
);
4702 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4705 /* Note: we always want to sleep here! */
4706 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4707 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4708 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4709 "manager!\n", __func__
);
4711 up_read(&nfsi
->rwsem
);
4713 request
->fl_flags
= fl_flags
;
4717 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4719 struct nfs4_exception exception
= {
4721 .inode
= state
->inode
,
4726 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4727 if (err
== -NFS4ERR_DENIED
)
4729 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4731 } while (exception
.retry
);
4736 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4738 struct nfs_open_context
*ctx
;
4739 struct nfs4_state
*state
;
4740 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4743 /* verify open state */
4744 ctx
= nfs_file_open_context(filp
);
4747 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4750 if (IS_GETLK(cmd
)) {
4752 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4756 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4759 if (request
->fl_type
== F_UNLCK
) {
4761 return nfs4_proc_unlck(state
, cmd
, request
);
4768 * Don't rely on the VFS having checked the file open mode,
4769 * since it won't do this for flock() locks.
4771 switch (request
->fl_type
& (F_RDLCK
|F_WRLCK
|F_UNLCK
)) {
4773 if (!(filp
->f_mode
& FMODE_READ
))
4777 if (!(filp
->f_mode
& FMODE_WRITE
))
4782 status
= nfs4_proc_setlk(state
, cmd
, request
);
4783 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4785 timeout
= nfs4_set_lock_task_retry(timeout
);
4786 status
= -ERESTARTSYS
;
4789 } while(status
< 0);
4793 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4795 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4796 struct nfs4_exception exception
= { };
4799 err
= nfs4_set_lock_state(state
, fl
);
4803 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4806 printk(KERN_ERR
"NFS: %s: unhandled error "
4807 "%d.\n", __func__
, err
);
4811 case -NFS4ERR_EXPIRED
:
4812 nfs4_schedule_stateid_recovery(server
, state
);
4813 case -NFS4ERR_STALE_CLIENTID
:
4814 case -NFS4ERR_STALE_STATEID
:
4815 nfs4_schedule_lease_recovery(server
->nfs_client
);
4817 case -NFS4ERR_BADSESSION
:
4818 case -NFS4ERR_BADSLOT
:
4819 case -NFS4ERR_BAD_HIGH_SLOT
:
4820 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4821 case -NFS4ERR_DEADSESSION
:
4822 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
);
4826 * The show must go on: exit, but mark the
4827 * stateid as needing recovery.
4829 case -NFS4ERR_DELEG_REVOKED
:
4830 case -NFS4ERR_ADMIN_REVOKED
:
4831 case -NFS4ERR_BAD_STATEID
:
4832 case -NFS4ERR_OPENMODE
:
4833 nfs4_schedule_stateid_recovery(server
, state
);
4838 * User RPCSEC_GSS context has expired.
4839 * We cannot recover this stateid now, so
4840 * skip it and allow recovery thread to
4846 case -NFS4ERR_DENIED
:
4847 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4850 case -NFS4ERR_DELAY
:
4853 err
= nfs4_handle_exception(server
, err
, &exception
);
4854 } while (exception
.retry
);
4859 struct nfs_release_lockowner_data
{
4860 struct nfs4_lock_state
*lsp
;
4861 struct nfs_server
*server
;
4862 struct nfs_release_lockowner_args args
;
4865 static void nfs4_release_lockowner_release(void *calldata
)
4867 struct nfs_release_lockowner_data
*data
= calldata
;
4868 nfs4_free_lock_state(data
->server
, data
->lsp
);
4872 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4873 .rpc_release
= nfs4_release_lockowner_release
,
4876 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
4878 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4879 struct nfs_release_lockowner_data
*data
;
4880 struct rpc_message msg
= {
4881 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4884 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
4886 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4890 data
->server
= server
;
4891 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4892 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4893 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
4894 msg
.rpc_argp
= &data
->args
;
4895 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
4899 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4901 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
4902 const void *buf
, size_t buflen
,
4903 int flags
, int type
)
4905 if (strcmp(key
, "") != 0)
4908 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
4911 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
4912 void *buf
, size_t buflen
, int type
)
4914 if (strcmp(key
, "") != 0)
4917 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
4920 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
4921 size_t list_len
, const char *name
,
4922 size_t name_len
, int type
)
4924 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
4926 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4929 if (list
&& len
<= list_len
)
4930 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
4935 * nfs_fhget will use either the mounted_on_fileid or the fileid
4937 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4939 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
4940 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
4941 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4942 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
4945 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4946 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
4947 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4951 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
4952 const struct qstr
*name
,
4953 struct nfs4_fs_locations
*fs_locations
,
4956 struct nfs_server
*server
= NFS_SERVER(dir
);
4958 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4960 struct nfs4_fs_locations_arg args
= {
4961 .dir_fh
= NFS_FH(dir
),
4966 struct nfs4_fs_locations_res res
= {
4967 .fs_locations
= fs_locations
,
4969 struct rpc_message msg
= {
4970 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4976 dprintk("%s: start\n", __func__
);
4978 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
4979 * is not supported */
4980 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
4981 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
4983 bitmask
[0] |= FATTR4_WORD0_FILEID
;
4985 nfs_fattr_init(&fs_locations
->fattr
);
4986 fs_locations
->server
= server
;
4987 fs_locations
->nlocations
= 0;
4988 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4989 dprintk("%s: returned status = %d\n", __func__
, status
);
4993 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
4994 const struct qstr
*name
,
4995 struct nfs4_fs_locations
*fs_locations
,
4998 struct nfs4_exception exception
= { };
5001 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5002 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5004 } while (exception
.retry
);
5008 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5011 struct nfs4_secinfo_arg args
= {
5012 .dir_fh
= NFS_FH(dir
),
5015 struct nfs4_secinfo_res res
= {
5018 struct rpc_message msg
= {
5019 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5024 dprintk("NFS call secinfo %s\n", name
->name
);
5025 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5026 dprintk("NFS reply secinfo: %d\n", status
);
5030 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5031 struct nfs4_secinfo_flavors
*flavors
)
5033 struct nfs4_exception exception
= { };
5036 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5037 _nfs4_proc_secinfo(dir
, name
, flavors
),
5039 } while (exception
.retry
);
5043 #ifdef CONFIG_NFS_V4_1
5045 * Check the exchange flags returned by the server for invalid flags, having
5046 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5049 static int nfs4_check_cl_exchange_flags(u32 flags
)
5051 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5053 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5054 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5056 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5060 return -NFS4ERR_INVAL
;
5064 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5065 struct nfs41_server_scope
*b
)
5067 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5068 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5075 * nfs4_proc_exchange_id()
5077 * Since the clientid has expired, all compounds using sessions
5078 * associated with the stale clientid will be returning
5079 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5080 * be in some phase of session reset.
5082 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5084 nfs4_verifier verifier
;
5085 struct nfs41_exchange_id_args args
= {
5086 .verifier
= &verifier
,
5088 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5090 struct nfs41_exchange_id_res res
= {
5094 struct rpc_message msg
= {
5095 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5101 dprintk("--> %s\n", __func__
);
5102 BUG_ON(clp
== NULL
);
5104 nfs4_init_boot_verifier(clp
, &verifier
);
5106 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
5109 clp
->cl_rpcclient
->cl_nodename
,
5110 clp
->cl_rpcclient
->cl_auth
->au_flavor
);
5112 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5114 if (unlikely(res
.server_owner
== NULL
)) {
5119 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5121 if (unlikely(res
.server_scope
== NULL
)) {
5123 goto out_server_owner
;
5126 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_KERNEL
);
5127 if (unlikely(res
.impl_id
== NULL
)) {
5129 goto out_server_scope
;
5132 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5134 status
= nfs4_check_cl_exchange_flags(clp
->cl_exchange_flags
);
5137 kfree(clp
->cl_serverowner
);
5138 clp
->cl_serverowner
= res
.server_owner
;
5139 res
.server_owner
= NULL
;
5143 /* use the most recent implementation id */
5144 kfree(clp
->cl_implid
);
5145 clp
->cl_implid
= res
.impl_id
;
5150 if (clp
->cl_serverscope
!= NULL
&&
5151 !nfs41_same_server_scope(clp
->cl_serverscope
,
5152 res
.server_scope
)) {
5153 dprintk("%s: server_scope mismatch detected\n",
5155 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5156 kfree(clp
->cl_serverscope
);
5157 clp
->cl_serverscope
= NULL
;
5160 if (clp
->cl_serverscope
== NULL
) {
5161 clp
->cl_serverscope
= res
.server_scope
;
5167 kfree(res
.server_owner
);
5169 kfree(res
.server_scope
);
5171 if (clp
->cl_implid
!= NULL
)
5172 dprintk("%s: Server Implementation ID: "
5173 "domain: %s, name: %s, date: %llu,%u\n",
5174 __func__
, clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5175 clp
->cl_implid
->date
.seconds
,
5176 clp
->cl_implid
->date
.nseconds
);
5177 dprintk("<-- %s status= %d\n", __func__
, status
);
5181 struct nfs4_get_lease_time_data
{
5182 struct nfs4_get_lease_time_args
*args
;
5183 struct nfs4_get_lease_time_res
*res
;
5184 struct nfs_client
*clp
;
5187 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5191 struct nfs4_get_lease_time_data
*data
=
5192 (struct nfs4_get_lease_time_data
*)calldata
;
5194 dprintk("--> %s\n", __func__
);
5195 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5196 /* just setup sequence, do not trigger session recovery
5197 since we're invoked within one */
5198 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
5199 &data
->args
->la_seq_args
,
5200 &data
->res
->lr_seq_res
, task
);
5202 BUG_ON(ret
== -EAGAIN
);
5203 rpc_call_start(task
);
5204 dprintk("<-- %s\n", __func__
);
5208 * Called from nfs4_state_manager thread for session setup, so don't recover
5209 * from sequence operation or clientid errors.
5211 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5213 struct nfs4_get_lease_time_data
*data
=
5214 (struct nfs4_get_lease_time_data
*)calldata
;
5216 dprintk("--> %s\n", __func__
);
5217 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5219 switch (task
->tk_status
) {
5220 case -NFS4ERR_DELAY
:
5221 case -NFS4ERR_GRACE
:
5222 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5223 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5224 task
->tk_status
= 0;
5226 case -NFS4ERR_RETRY_UNCACHED_REP
:
5227 rpc_restart_call_prepare(task
);
5230 dprintk("<-- %s\n", __func__
);
5233 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5234 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5235 .rpc_call_done
= nfs4_get_lease_time_done
,
5238 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5240 struct rpc_task
*task
;
5241 struct nfs4_get_lease_time_args args
;
5242 struct nfs4_get_lease_time_res res
= {
5243 .lr_fsinfo
= fsinfo
,
5245 struct nfs4_get_lease_time_data data
= {
5250 struct rpc_message msg
= {
5251 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5255 struct rpc_task_setup task_setup
= {
5256 .rpc_client
= clp
->cl_rpcclient
,
5257 .rpc_message
= &msg
,
5258 .callback_ops
= &nfs4_get_lease_time_ops
,
5259 .callback_data
= &data
,
5260 .flags
= RPC_TASK_TIMEOUT
,
5264 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5265 dprintk("--> %s\n", __func__
);
5266 task
= rpc_run_task(&task_setup
);
5269 status
= PTR_ERR(task
);
5271 status
= task
->tk_status
;
5274 dprintk("<-- %s return %d\n", __func__
, status
);
5279 static struct nfs4_slot
*nfs4_alloc_slots(u32 max_slots
, gfp_t gfp_flags
)
5281 return kcalloc(max_slots
, sizeof(struct nfs4_slot
), gfp_flags
);
5284 static void nfs4_add_and_init_slots(struct nfs4_slot_table
*tbl
,
5285 struct nfs4_slot
*new,
5289 struct nfs4_slot
*old
= NULL
;
5292 spin_lock(&tbl
->slot_tbl_lock
);
5296 tbl
->max_slots
= max_slots
;
5298 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
5299 for (i
= 0; i
< tbl
->max_slots
; i
++)
5300 tbl
->slots
[i
].seq_nr
= ivalue
;
5301 spin_unlock(&tbl
->slot_tbl_lock
);
5306 * (re)Initialise a slot table
5308 static int nfs4_realloc_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
5311 struct nfs4_slot
*new = NULL
;
5314 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
5315 max_reqs
, tbl
->max_slots
);
5317 /* Does the newly negotiated max_reqs match the existing slot table? */
5318 if (max_reqs
!= tbl
->max_slots
) {
5319 new = nfs4_alloc_slots(max_reqs
, GFP_NOFS
);
5325 nfs4_add_and_init_slots(tbl
, new, max_reqs
, ivalue
);
5326 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5327 tbl
, tbl
->slots
, tbl
->max_slots
);
5329 dprintk("<-- %s: return %d\n", __func__
, ret
);
5333 /* Destroy the slot table */
5334 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
5336 if (session
->fc_slot_table
.slots
!= NULL
) {
5337 kfree(session
->fc_slot_table
.slots
);
5338 session
->fc_slot_table
.slots
= NULL
;
5340 if (session
->bc_slot_table
.slots
!= NULL
) {
5341 kfree(session
->bc_slot_table
.slots
);
5342 session
->bc_slot_table
.slots
= NULL
;
5348 * Initialize or reset the forechannel and backchannel tables
5350 static int nfs4_setup_session_slot_tables(struct nfs4_session
*ses
)
5352 struct nfs4_slot_table
*tbl
;
5355 dprintk("--> %s\n", __func__
);
5357 tbl
= &ses
->fc_slot_table
;
5358 status
= nfs4_realloc_slot_table(tbl
, ses
->fc_attrs
.max_reqs
, 1);
5359 if (status
) /* -ENOMEM */
5362 tbl
= &ses
->bc_slot_table
;
5363 status
= nfs4_realloc_slot_table(tbl
, ses
->bc_attrs
.max_reqs
, 0);
5364 if (status
&& tbl
->slots
== NULL
)
5365 /* Fore and back channel share a connection so get
5366 * both slot tables or neither */
5367 nfs4_destroy_slot_tables(ses
);
5371 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5373 struct nfs4_session
*session
;
5374 struct nfs4_slot_table
*tbl
;
5376 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5380 tbl
= &session
->fc_slot_table
;
5381 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5382 spin_lock_init(&tbl
->slot_tbl_lock
);
5383 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5384 init_completion(&tbl
->complete
);
5386 tbl
= &session
->bc_slot_table
;
5387 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5388 spin_lock_init(&tbl
->slot_tbl_lock
);
5389 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5390 init_completion(&tbl
->complete
);
5392 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5398 void nfs4_destroy_session(struct nfs4_session
*session
)
5400 struct rpc_xprt
*xprt
;
5402 nfs4_proc_destroy_session(session
);
5405 xprt
= rcu_dereference(session
->clp
->cl_rpcclient
->cl_xprt
);
5407 dprintk("%s Destroy backchannel for xprt %p\n",
5409 xprt_destroy_backchannel(xprt
, NFS41_BC_MIN_CALLBACKS
);
5410 nfs4_destroy_slot_tables(session
);
5415 * Initialize the values to be used by the client in CREATE_SESSION
5416 * If nfs4_init_session set the fore channel request and response sizes,
5419 * Set the back channel max_resp_sz_cached to zero to force the client to
5420 * always set csa_cachethis to FALSE because the current implementation
5421 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5423 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5425 struct nfs4_session
*session
= args
->client
->cl_session
;
5426 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5427 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5430 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5432 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5433 /* Fore channel attributes */
5434 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5435 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5436 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5437 args
->fc_attrs
.max_reqs
= max_session_slots
;
5439 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5440 "max_ops=%u max_reqs=%u\n",
5442 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5443 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5445 /* Back channel attributes */
5446 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5447 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5448 args
->bc_attrs
.max_resp_sz_cached
= 0;
5449 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5450 args
->bc_attrs
.max_reqs
= 1;
5452 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5453 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5455 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5456 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5457 args
->bc_attrs
.max_reqs
);
5460 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5462 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5463 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5465 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5468 * Our requested max_ops is the minimum we need; we're not
5469 * prepared to break up compounds into smaller pieces than that.
5470 * So, no point even trying to continue if the server won't
5473 if (rcvd
->max_ops
< sent
->max_ops
)
5475 if (rcvd
->max_reqs
== 0)
5477 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5478 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5482 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5484 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5485 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5487 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5489 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5491 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5493 /* These would render the backchannel useless: */
5494 if (rcvd
->max_ops
!= sent
->max_ops
)
5496 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5501 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5502 struct nfs4_session
*session
)
5506 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5509 return nfs4_verify_back_channel_attrs(args
, session
);
5512 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
5514 struct nfs4_session
*session
= clp
->cl_session
;
5515 struct nfs41_create_session_args args
= {
5517 .cb_program
= NFS4_CALLBACK
,
5519 struct nfs41_create_session_res res
= {
5522 struct rpc_message msg
= {
5523 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5529 nfs4_init_channel_attrs(&args
);
5530 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5532 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5535 /* Verify the session's negotiated channel_attrs values */
5536 status
= nfs4_verify_channel_attrs(&args
, session
);
5538 /* Increment the clientid slot sequence id */
5546 * Issues a CREATE_SESSION operation to the server.
5547 * It is the responsibility of the caller to verify the session is
5548 * expired before calling this routine.
5550 int nfs4_proc_create_session(struct nfs_client
*clp
)
5554 struct nfs4_session
*session
= clp
->cl_session
;
5556 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5558 status
= _nfs4_proc_create_session(clp
);
5562 /* Init or reset the session slot tables */
5563 status
= nfs4_setup_session_slot_tables(session
);
5564 dprintk("slot table setup returned %d\n", status
);
5568 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5569 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5570 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5572 dprintk("<-- %s\n", __func__
);
5577 * Issue the over-the-wire RPC DESTROY_SESSION.
5578 * The caller must serialize access to this routine.
5580 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
5583 struct rpc_message msg
;
5585 dprintk("--> nfs4_proc_destroy_session\n");
5587 /* session is still being setup */
5588 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5591 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
5592 msg
.rpc_argp
= session
;
5593 msg
.rpc_resp
= NULL
;
5594 msg
.rpc_cred
= NULL
;
5595 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5599 "NFS: Got error %d from the server on DESTROY_SESSION. "
5600 "Session has been destroyed regardless...\n", status
);
5602 dprintk("<-- nfs4_proc_destroy_session\n");
5606 int nfs4_init_session(struct nfs_server
*server
)
5608 struct nfs_client
*clp
= server
->nfs_client
;
5609 struct nfs4_session
*session
;
5610 unsigned int rsize
, wsize
;
5613 if (!nfs4_has_session(clp
))
5616 session
= clp
->cl_session
;
5617 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5620 rsize
= server
->rsize
;
5622 rsize
= NFS_MAX_FILE_IO_SIZE
;
5623 wsize
= server
->wsize
;
5625 wsize
= NFS_MAX_FILE_IO_SIZE
;
5627 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5628 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5630 ret
= nfs4_recover_expired_lease(server
);
5632 ret
= nfs4_check_client_ready(clp
);
5636 int nfs4_init_ds_session(struct nfs_client
*clp
)
5638 struct nfs4_session
*session
= clp
->cl_session
;
5641 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5644 ret
= nfs4_client_recover_expired_lease(clp
);
5646 /* Test for the DS role */
5647 if (!is_ds_client(clp
))
5650 ret
= nfs4_check_client_ready(clp
);
5654 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5658 * Renew the cl_session lease.
5660 struct nfs4_sequence_data
{
5661 struct nfs_client
*clp
;
5662 struct nfs4_sequence_args args
;
5663 struct nfs4_sequence_res res
;
5666 static void nfs41_sequence_release(void *data
)
5668 struct nfs4_sequence_data
*calldata
= data
;
5669 struct nfs_client
*clp
= calldata
->clp
;
5671 if (atomic_read(&clp
->cl_count
) > 1)
5672 nfs4_schedule_state_renewal(clp
);
5673 nfs_put_client(clp
);
5677 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5679 switch(task
->tk_status
) {
5680 case -NFS4ERR_DELAY
:
5681 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5684 nfs4_schedule_lease_recovery(clp
);
5689 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5691 struct nfs4_sequence_data
*calldata
= data
;
5692 struct nfs_client
*clp
= calldata
->clp
;
5694 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5697 if (task
->tk_status
< 0) {
5698 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5699 if (atomic_read(&clp
->cl_count
) == 1)
5702 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5703 rpc_restart_call_prepare(task
);
5707 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5709 dprintk("<-- %s\n", __func__
);
5712 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5714 struct nfs4_sequence_data
*calldata
= data
;
5715 struct nfs_client
*clp
= calldata
->clp
;
5716 struct nfs4_sequence_args
*args
;
5717 struct nfs4_sequence_res
*res
;
5719 args
= task
->tk_msg
.rpc_argp
;
5720 res
= task
->tk_msg
.rpc_resp
;
5722 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
))
5724 rpc_call_start(task
);
5727 static const struct rpc_call_ops nfs41_sequence_ops
= {
5728 .rpc_call_done
= nfs41_sequence_call_done
,
5729 .rpc_call_prepare
= nfs41_sequence_prepare
,
5730 .rpc_release
= nfs41_sequence_release
,
5733 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5735 struct nfs4_sequence_data
*calldata
;
5736 struct rpc_message msg
= {
5737 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5740 struct rpc_task_setup task_setup_data
= {
5741 .rpc_client
= clp
->cl_rpcclient
,
5742 .rpc_message
= &msg
,
5743 .callback_ops
= &nfs41_sequence_ops
,
5744 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5747 if (!atomic_inc_not_zero(&clp
->cl_count
))
5748 return ERR_PTR(-EIO
);
5749 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5750 if (calldata
== NULL
) {
5751 nfs_put_client(clp
);
5752 return ERR_PTR(-ENOMEM
);
5754 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
5755 msg
.rpc_argp
= &calldata
->args
;
5756 msg
.rpc_resp
= &calldata
->res
;
5757 calldata
->clp
= clp
;
5758 task_setup_data
.callback_data
= calldata
;
5760 return rpc_run_task(&task_setup_data
);
5763 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
5765 struct rpc_task
*task
;
5768 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
5770 task
= _nfs41_proc_sequence(clp
, cred
);
5772 ret
= PTR_ERR(task
);
5774 rpc_put_task_async(task
);
5775 dprintk("<-- %s status=%d\n", __func__
, ret
);
5779 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5781 struct rpc_task
*task
;
5784 task
= _nfs41_proc_sequence(clp
, cred
);
5786 ret
= PTR_ERR(task
);
5789 ret
= rpc_wait_for_completion_task(task
);
5791 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5793 if (task
->tk_status
== 0)
5794 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5795 ret
= task
->tk_status
;
5799 dprintk("<-- %s status=%d\n", __func__
, ret
);
5803 struct nfs4_reclaim_complete_data
{
5804 struct nfs_client
*clp
;
5805 struct nfs41_reclaim_complete_args arg
;
5806 struct nfs41_reclaim_complete_res res
;
5809 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5811 struct nfs4_reclaim_complete_data
*calldata
= data
;
5813 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5814 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5815 &calldata
->arg
.seq_args
,
5816 &calldata
->res
.seq_res
, task
))
5819 rpc_call_start(task
);
5822 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5824 switch(task
->tk_status
) {
5826 case -NFS4ERR_COMPLETE_ALREADY
:
5827 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5829 case -NFS4ERR_DELAY
:
5830 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5832 case -NFS4ERR_RETRY_UNCACHED_REP
:
5835 nfs4_schedule_lease_recovery(clp
);
5840 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5842 struct nfs4_reclaim_complete_data
*calldata
= data
;
5843 struct nfs_client
*clp
= calldata
->clp
;
5844 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5846 dprintk("--> %s\n", __func__
);
5847 if (!nfs41_sequence_done(task
, res
))
5850 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5851 rpc_restart_call_prepare(task
);
5854 dprintk("<-- %s\n", __func__
);
5857 static void nfs4_free_reclaim_complete_data(void *data
)
5859 struct nfs4_reclaim_complete_data
*calldata
= data
;
5864 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5865 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5866 .rpc_call_done
= nfs4_reclaim_complete_done
,
5867 .rpc_release
= nfs4_free_reclaim_complete_data
,
5871 * Issue a global reclaim complete.
5873 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5875 struct nfs4_reclaim_complete_data
*calldata
;
5876 struct rpc_task
*task
;
5877 struct rpc_message msg
= {
5878 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5880 struct rpc_task_setup task_setup_data
= {
5881 .rpc_client
= clp
->cl_rpcclient
,
5882 .rpc_message
= &msg
,
5883 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5884 .flags
= RPC_TASK_ASYNC
,
5886 int status
= -ENOMEM
;
5888 dprintk("--> %s\n", __func__
);
5889 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5890 if (calldata
== NULL
)
5892 calldata
->clp
= clp
;
5893 calldata
->arg
.one_fs
= 0;
5895 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
5896 msg
.rpc_argp
= &calldata
->arg
;
5897 msg
.rpc_resp
= &calldata
->res
;
5898 task_setup_data
.callback_data
= calldata
;
5899 task
= rpc_run_task(&task_setup_data
);
5901 status
= PTR_ERR(task
);
5904 status
= nfs4_wait_for_completion_rpc_task(task
);
5906 status
= task
->tk_status
;
5910 dprintk("<-- %s status=%d\n", __func__
, status
);
5915 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
5917 struct nfs4_layoutget
*lgp
= calldata
;
5918 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5920 dprintk("--> %s\n", __func__
);
5921 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
5922 * right now covering the LAYOUTGET we are about to send.
5923 * However, that is not so catastrophic, and there seems
5924 * to be no way to prevent it completely.
5926 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
5927 &lgp
->res
.seq_res
, task
))
5929 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
5930 NFS_I(lgp
->args
.inode
)->layout
,
5931 lgp
->args
.ctx
->state
)) {
5932 rpc_exit(task
, NFS4_OK
);
5935 rpc_call_start(task
);
5938 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
5940 struct nfs4_layoutget
*lgp
= calldata
;
5941 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5943 dprintk("--> %s\n", __func__
);
5945 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
5948 switch (task
->tk_status
) {
5951 case -NFS4ERR_LAYOUTTRYLATER
:
5952 case -NFS4ERR_RECALLCONFLICT
:
5953 task
->tk_status
= -NFS4ERR_DELAY
;
5956 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
5957 rpc_restart_call_prepare(task
);
5961 dprintk("<-- %s\n", __func__
);
5964 static void nfs4_layoutget_release(void *calldata
)
5966 struct nfs4_layoutget
*lgp
= calldata
;
5968 dprintk("--> %s\n", __func__
);
5969 put_nfs_open_context(lgp
->args
.ctx
);
5971 dprintk("<-- %s\n", __func__
);
5974 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
5975 .rpc_call_prepare
= nfs4_layoutget_prepare
,
5976 .rpc_call_done
= nfs4_layoutget_done
,
5977 .rpc_release
= nfs4_layoutget_release
,
5980 int nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
)
5982 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
5983 struct rpc_task
*task
;
5984 struct rpc_message msg
= {
5985 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
5986 .rpc_argp
= &lgp
->args
,
5987 .rpc_resp
= &lgp
->res
,
5989 struct rpc_task_setup task_setup_data
= {
5990 .rpc_client
= server
->client
,
5991 .rpc_message
= &msg
,
5992 .callback_ops
= &nfs4_layoutget_call_ops
,
5993 .callback_data
= lgp
,
5994 .flags
= RPC_TASK_ASYNC
,
5998 dprintk("--> %s\n", __func__
);
6000 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6001 lgp
->res
.seq_res
.sr_slot
= NULL
;
6002 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6003 task
= rpc_run_task(&task_setup_data
);
6005 return PTR_ERR(task
);
6006 status
= nfs4_wait_for_completion_rpc_task(task
);
6008 status
= task
->tk_status
;
6010 status
= pnfs_layout_process(lgp
);
6012 dprintk("<-- %s status=%d\n", __func__
, status
);
6017 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6019 struct nfs4_layoutreturn
*lrp
= calldata
;
6021 dprintk("--> %s\n", __func__
);
6022 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
6023 &lrp
->res
.seq_res
, task
))
6025 rpc_call_start(task
);
6028 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6030 struct nfs4_layoutreturn
*lrp
= calldata
;
6031 struct nfs_server
*server
;
6032 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6034 dprintk("--> %s\n", __func__
);
6036 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
6039 server
= NFS_SERVER(lrp
->args
.inode
);
6040 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6041 rpc_restart_call_prepare(task
);
6044 spin_lock(&lo
->plh_inode
->i_lock
);
6045 if (task
->tk_status
== 0) {
6046 if (lrp
->res
.lrs_present
) {
6047 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6049 BUG_ON(!list_empty(&lo
->plh_segs
));
6051 lo
->plh_block_lgets
--;
6052 spin_unlock(&lo
->plh_inode
->i_lock
);
6053 dprintk("<-- %s\n", __func__
);
6056 static void nfs4_layoutreturn_release(void *calldata
)
6058 struct nfs4_layoutreturn
*lrp
= calldata
;
6060 dprintk("--> %s\n", __func__
);
6061 put_layout_hdr(lrp
->args
.layout
);
6063 dprintk("<-- %s\n", __func__
);
6066 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6067 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6068 .rpc_call_done
= nfs4_layoutreturn_done
,
6069 .rpc_release
= nfs4_layoutreturn_release
,
6072 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6074 struct rpc_task
*task
;
6075 struct rpc_message msg
= {
6076 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6077 .rpc_argp
= &lrp
->args
,
6078 .rpc_resp
= &lrp
->res
,
6080 struct rpc_task_setup task_setup_data
= {
6081 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6082 .rpc_message
= &msg
,
6083 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6084 .callback_data
= lrp
,
6088 dprintk("--> %s\n", __func__
);
6089 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6090 task
= rpc_run_task(&task_setup_data
);
6092 return PTR_ERR(task
);
6093 status
= task
->tk_status
;
6094 dprintk("<-- %s status=%d\n", __func__
, status
);
6100 * Retrieve the list of Data Server devices from the MDS.
6102 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6103 const struct nfs_fh
*fh
,
6104 struct pnfs_devicelist
*devlist
)
6106 struct nfs4_getdevicelist_args args
= {
6108 .layoutclass
= server
->pnfs_curr_ld
->id
,
6110 struct nfs4_getdevicelist_res res
= {
6113 struct rpc_message msg
= {
6114 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6120 dprintk("--> %s\n", __func__
);
6121 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6123 dprintk("<-- %s status=%d\n", __func__
, status
);
6127 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6128 const struct nfs_fh
*fh
,
6129 struct pnfs_devicelist
*devlist
)
6131 struct nfs4_exception exception
= { };
6135 err
= nfs4_handle_exception(server
,
6136 _nfs4_getdevicelist(server
, fh
, devlist
),
6138 } while (exception
.retry
);
6140 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6141 err
, devlist
->num_devs
);
6145 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6148 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6150 struct nfs4_getdeviceinfo_args args
= {
6153 struct nfs4_getdeviceinfo_res res
= {
6156 struct rpc_message msg
= {
6157 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6163 dprintk("--> %s\n", __func__
);
6164 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6165 dprintk("<-- %s status=%d\n", __func__
, status
);
6170 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6172 struct nfs4_exception exception
= { };
6176 err
= nfs4_handle_exception(server
,
6177 _nfs4_proc_getdeviceinfo(server
, pdev
),
6179 } while (exception
.retry
);
6182 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6184 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6186 struct nfs4_layoutcommit_data
*data
= calldata
;
6187 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6189 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
6190 &data
->res
.seq_res
, task
))
6192 rpc_call_start(task
);
6196 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6198 struct nfs4_layoutcommit_data
*data
= calldata
;
6199 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6201 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6204 switch (task
->tk_status
) { /* Just ignore these failures */
6205 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6206 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6207 case -NFS4ERR_BADLAYOUT
: /* no layout */
6208 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6209 task
->tk_status
= 0;
6212 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6216 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6217 rpc_restart_call_prepare(task
);
6223 static void nfs4_layoutcommit_release(void *calldata
)
6225 struct nfs4_layoutcommit_data
*data
= calldata
;
6226 struct pnfs_layout_segment
*lseg
, *tmp
;
6227 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
6229 pnfs_cleanup_layoutcommit(data
);
6230 /* Matched by references in pnfs_set_layoutcommit */
6231 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
6232 list_del_init(&lseg
->pls_lc_list
);
6233 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
6238 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
6239 smp_mb__after_clear_bit();
6240 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
6242 put_rpccred(data
->cred
);
6246 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6247 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6248 .rpc_call_done
= nfs4_layoutcommit_done
,
6249 .rpc_release
= nfs4_layoutcommit_release
,
6253 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6255 struct rpc_message msg
= {
6256 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6257 .rpc_argp
= &data
->args
,
6258 .rpc_resp
= &data
->res
,
6259 .rpc_cred
= data
->cred
,
6261 struct rpc_task_setup task_setup_data
= {
6262 .task
= &data
->task
,
6263 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6264 .rpc_message
= &msg
,
6265 .callback_ops
= &nfs4_layoutcommit_ops
,
6266 .callback_data
= data
,
6267 .flags
= RPC_TASK_ASYNC
,
6269 struct rpc_task
*task
;
6272 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6273 "lbw: %llu inode %lu\n",
6274 data
->task
.tk_pid
, sync
,
6275 data
->args
.lastbytewritten
,
6276 data
->args
.inode
->i_ino
);
6278 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6279 task
= rpc_run_task(&task_setup_data
);
6281 return PTR_ERR(task
);
6284 status
= nfs4_wait_for_completion_rpc_task(task
);
6287 status
= task
->tk_status
;
6289 dprintk("%s: status %d\n", __func__
, status
);
6295 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6296 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6298 struct nfs41_secinfo_no_name_args args
= {
6299 .style
= SECINFO_STYLE_CURRENT_FH
,
6301 struct nfs4_secinfo_res res
= {
6304 struct rpc_message msg
= {
6305 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6309 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6313 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6314 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6316 struct nfs4_exception exception
= { };
6319 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6322 case -NFS4ERR_WRONGSEC
:
6323 case -NFS4ERR_NOTSUPP
:
6326 err
= nfs4_handle_exception(server
, err
, &exception
);
6328 } while (exception
.retry
);
6334 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6335 struct nfs_fsinfo
*info
)
6339 rpc_authflavor_t flavor
;
6340 struct nfs4_secinfo_flavors
*flavors
;
6342 page
= alloc_page(GFP_KERNEL
);
6348 flavors
= page_address(page
);
6349 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6352 * Fall back on "guess and check" method if
6353 * the server doesn't support SECINFO_NO_NAME
6355 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6356 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6362 flavor
= nfs_find_best_sec(flavors
);
6364 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6374 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6377 struct nfs41_test_stateid_args args
= {
6380 struct nfs41_test_stateid_res res
;
6381 struct rpc_message msg
= {
6382 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6387 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6388 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6390 if (status
== NFS_OK
)
6395 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6397 struct nfs4_exception exception
= { };
6400 err
= nfs4_handle_exception(server
,
6401 _nfs41_test_stateid(server
, stateid
),
6403 } while (exception
.retry
);
6407 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6409 struct nfs41_free_stateid_args args
= {
6412 struct nfs41_free_stateid_res res
;
6413 struct rpc_message msg
= {
6414 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6419 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6420 return nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6423 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6425 struct nfs4_exception exception
= { };
6428 err
= nfs4_handle_exception(server
,
6429 _nfs4_free_stateid(server
, stateid
),
6431 } while (exception
.retry
);
6435 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6436 const nfs4_stateid
*s2
)
6438 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6441 if (s1
->seqid
== s2
->seqid
)
6443 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6449 #endif /* CONFIG_NFS_V4_1 */
6451 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6452 const nfs4_stateid
*s2
)
6454 return nfs4_stateid_match(s1
, s2
);
6458 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6459 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6460 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6461 .recover_open
= nfs4_open_reclaim
,
6462 .recover_lock
= nfs4_lock_reclaim
,
6463 .establish_clid
= nfs4_init_clientid
,
6464 .get_clid_cred
= nfs4_get_setclientid_cred
,
6467 #if defined(CONFIG_NFS_V4_1)
6468 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6469 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6470 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6471 .recover_open
= nfs4_open_reclaim
,
6472 .recover_lock
= nfs4_lock_reclaim
,
6473 .establish_clid
= nfs41_init_clientid
,
6474 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6475 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6477 #endif /* CONFIG_NFS_V4_1 */
6479 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6480 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6481 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6482 .recover_open
= nfs4_open_expired
,
6483 .recover_lock
= nfs4_lock_expired
,
6484 .establish_clid
= nfs4_init_clientid
,
6485 .get_clid_cred
= nfs4_get_setclientid_cred
,
6488 #if defined(CONFIG_NFS_V4_1)
6489 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6490 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6491 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6492 .recover_open
= nfs41_open_expired
,
6493 .recover_lock
= nfs41_lock_expired
,
6494 .establish_clid
= nfs41_init_clientid
,
6495 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6497 #endif /* CONFIG_NFS_V4_1 */
6499 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6500 .sched_state_renewal
= nfs4_proc_async_renew
,
6501 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6502 .renew_lease
= nfs4_proc_renew
,
6505 #if defined(CONFIG_NFS_V4_1)
6506 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6507 .sched_state_renewal
= nfs41_proc_async_sequence
,
6508 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6509 .renew_lease
= nfs4_proc_sequence
,
6513 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6515 .call_sync
= _nfs4_call_sync
,
6516 .match_stateid
= nfs4_match_stateid
,
6517 .find_root_sec
= nfs4_find_root_sec
,
6518 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6519 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6520 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6523 #if defined(CONFIG_NFS_V4_1)
6524 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6526 .call_sync
= _nfs4_call_sync_session
,
6527 .match_stateid
= nfs41_match_stateid
,
6528 .find_root_sec
= nfs41_find_root_sec
,
6529 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6530 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6531 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6535 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6536 [0] = &nfs_v4_0_minor_ops
,
6537 #if defined(CONFIG_NFS_V4_1)
6538 [1] = &nfs_v4_1_minor_ops
,
6542 static const struct inode_operations nfs4_file_inode_operations
= {
6543 .permission
= nfs_permission
,
6544 .getattr
= nfs_getattr
,
6545 .setattr
= nfs_setattr
,
6546 .getxattr
= generic_getxattr
,
6547 .setxattr
= generic_setxattr
,
6548 .listxattr
= generic_listxattr
,
6549 .removexattr
= generic_removexattr
,
6552 const struct nfs_rpc_ops nfs_v4_clientops
= {
6553 .version
= 4, /* protocol version */
6554 .dentry_ops
= &nfs4_dentry_operations
,
6555 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6556 .file_inode_ops
= &nfs4_file_inode_operations
,
6557 .file_ops
= &nfs4_file_operations
,
6558 .getroot
= nfs4_proc_get_root
,
6559 .submount
= nfs4_submount
,
6560 .getattr
= nfs4_proc_getattr
,
6561 .setattr
= nfs4_proc_setattr
,
6562 .lookup
= nfs4_proc_lookup
,
6563 .access
= nfs4_proc_access
,
6564 .readlink
= nfs4_proc_readlink
,
6565 .create
= nfs4_proc_create
,
6566 .remove
= nfs4_proc_remove
,
6567 .unlink_setup
= nfs4_proc_unlink_setup
,
6568 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
6569 .unlink_done
= nfs4_proc_unlink_done
,
6570 .rename
= nfs4_proc_rename
,
6571 .rename_setup
= nfs4_proc_rename_setup
,
6572 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
6573 .rename_done
= nfs4_proc_rename_done
,
6574 .link
= nfs4_proc_link
,
6575 .symlink
= nfs4_proc_symlink
,
6576 .mkdir
= nfs4_proc_mkdir
,
6577 .rmdir
= nfs4_proc_remove
,
6578 .readdir
= nfs4_proc_readdir
,
6579 .mknod
= nfs4_proc_mknod
,
6580 .statfs
= nfs4_proc_statfs
,
6581 .fsinfo
= nfs4_proc_fsinfo
,
6582 .pathconf
= nfs4_proc_pathconf
,
6583 .set_capabilities
= nfs4_server_capabilities
,
6584 .decode_dirent
= nfs4_decode_dirent
,
6585 .read_setup
= nfs4_proc_read_setup
,
6586 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
6587 .read_done
= nfs4_read_done
,
6588 .write_setup
= nfs4_proc_write_setup
,
6589 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
6590 .write_done
= nfs4_write_done
,
6591 .commit_setup
= nfs4_proc_commit_setup
,
6592 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
6593 .commit_done
= nfs4_commit_done
,
6594 .lock
= nfs4_proc_lock
,
6595 .clear_acl_cache
= nfs4_zap_acl_attr
,
6596 .close_context
= nfs4_close_context
,
6597 .open_context
= nfs4_atomic_open
,
6598 .init_client
= nfs4_init_client
,
6601 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6602 .prefix
= XATTR_NAME_NFSV4_ACL
,
6603 .list
= nfs4_xattr_list_nfs4_acl
,
6604 .get
= nfs4_xattr_get_nfs4_acl
,
6605 .set
= nfs4_xattr_set_nfs4_acl
,
6608 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6609 &nfs4_xattr_nfs4_acl_handler
,
6613 module_param(max_session_slots
, ushort
, 0644);
6614 MODULE_PARM_DESC(max_session_slots
, "Maximum number of outstanding NFSv4.1 "
6615 "requests the client will negotiate");