4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/nfs_idmap.h>
55 #include <linux/sunrpc/bc_xprt.h>
56 #include <linux/xattr.h>
57 #include <linux/utsname.h>
58 #include <linux/freezer.h>
61 #include "delegation.h"
68 #define NFSDBG_FACILITY NFSDBG_PROC
70 #define NFS4_POLL_RETRY_MIN (HZ/10)
71 #define NFS4_POLL_RETRY_MAX (15*HZ)
73 #define NFS4_MAX_LOOP_ON_RECOVER (10)
76 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
77 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
78 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
79 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
80 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
81 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*);
82 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
83 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
84 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
85 struct nfs4_state
*state
);
86 #ifdef CONFIG_NFS_V4_1
87 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*);
88 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*);
90 /* Prevent leaks of NFSv4 errors into userland */
91 static int nfs4_map_errors(int err
)
96 case -NFS4ERR_RESOURCE
:
98 case -NFS4ERR_WRONGSEC
:
100 case -NFS4ERR_BADOWNER
:
101 case -NFS4ERR_BADNAME
:
103 case -NFS4ERR_SHARE_DENIED
:
105 case -NFS4ERR_MINOR_VERS_MISMATCH
:
106 return -EPROTONOSUPPORT
;
108 dprintk("%s could not handle NFSv4 error %d\n",
116 * This is our standard bitmap for GETATTR requests.
118 const u32 nfs4_fattr_bitmap
[3] = {
120 | FATTR4_WORD0_CHANGE
123 | FATTR4_WORD0_FILEID
,
125 | FATTR4_WORD1_NUMLINKS
127 | FATTR4_WORD1_OWNER_GROUP
128 | FATTR4_WORD1_RAWDEV
129 | FATTR4_WORD1_SPACE_USED
130 | FATTR4_WORD1_TIME_ACCESS
131 | FATTR4_WORD1_TIME_METADATA
132 | FATTR4_WORD1_TIME_MODIFY
135 static const u32 nfs4_pnfs_open_bitmap
[3] = {
137 | FATTR4_WORD0_CHANGE
140 | FATTR4_WORD0_FILEID
,
142 | FATTR4_WORD1_NUMLINKS
144 | FATTR4_WORD1_OWNER_GROUP
145 | FATTR4_WORD1_RAWDEV
146 | FATTR4_WORD1_SPACE_USED
147 | FATTR4_WORD1_TIME_ACCESS
148 | FATTR4_WORD1_TIME_METADATA
149 | FATTR4_WORD1_TIME_MODIFY
,
150 FATTR4_WORD2_MDSTHRESHOLD
153 const u32 nfs4_statfs_bitmap
[2] = {
154 FATTR4_WORD0_FILES_AVAIL
155 | FATTR4_WORD0_FILES_FREE
156 | FATTR4_WORD0_FILES_TOTAL
,
157 FATTR4_WORD1_SPACE_AVAIL
158 | FATTR4_WORD1_SPACE_FREE
159 | FATTR4_WORD1_SPACE_TOTAL
162 const u32 nfs4_pathconf_bitmap
[2] = {
164 | FATTR4_WORD0_MAXNAME
,
168 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
169 | FATTR4_WORD0_MAXREAD
170 | FATTR4_WORD0_MAXWRITE
171 | FATTR4_WORD0_LEASE_TIME
,
172 FATTR4_WORD1_TIME_DELTA
173 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
174 FATTR4_WORD2_LAYOUT_BLKSIZE
177 const u32 nfs4_fs_locations_bitmap
[2] = {
179 | FATTR4_WORD0_CHANGE
182 | FATTR4_WORD0_FILEID
183 | FATTR4_WORD0_FS_LOCATIONS
,
185 | FATTR4_WORD1_NUMLINKS
187 | FATTR4_WORD1_OWNER_GROUP
188 | FATTR4_WORD1_RAWDEV
189 | FATTR4_WORD1_SPACE_USED
190 | FATTR4_WORD1_TIME_ACCESS
191 | FATTR4_WORD1_TIME_METADATA
192 | FATTR4_WORD1_TIME_MODIFY
193 | FATTR4_WORD1_MOUNTED_ON_FILEID
196 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
197 struct nfs4_readdir_arg
*readdir
)
201 BUG_ON(readdir
->count
< 80);
203 readdir
->cookie
= cookie
;
204 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
209 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
214 * NFSv4 servers do not return entries for '.' and '..'
215 * Therefore, we fake these entries here. We let '.'
216 * have cookie 0 and '..' have cookie 1. Note that
217 * when talking to the server, we always send cookie 0
220 start
= p
= kmap_atomic(*readdir
->pages
);
223 *p
++ = xdr_one
; /* next */
224 *p
++ = xdr_zero
; /* cookie, first word */
225 *p
++ = xdr_one
; /* cookie, second word */
226 *p
++ = xdr_one
; /* entry len */
227 memcpy(p
, ".\0\0\0", 4); /* entry */
229 *p
++ = xdr_one
; /* bitmap length */
230 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
231 *p
++ = htonl(8); /* attribute buffer length */
232 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
235 *p
++ = xdr_one
; /* next */
236 *p
++ = xdr_zero
; /* cookie, first word */
237 *p
++ = xdr_two
; /* cookie, second word */
238 *p
++ = xdr_two
; /* entry len */
239 memcpy(p
, "..\0\0", 4); /* entry */
241 *p
++ = xdr_one
; /* bitmap length */
242 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
243 *p
++ = htonl(8); /* attribute buffer length */
244 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
246 readdir
->pgbase
= (char *)p
- (char *)start
;
247 readdir
->count
-= readdir
->pgbase
;
248 kunmap_atomic(start
);
251 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
257 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
258 nfs_wait_bit_killable
, TASK_KILLABLE
);
262 if (clp
->cl_cons_state
< 0)
263 return clp
->cl_cons_state
;
267 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
274 *timeout
= NFS4_POLL_RETRY_MIN
;
275 if (*timeout
> NFS4_POLL_RETRY_MAX
)
276 *timeout
= NFS4_POLL_RETRY_MAX
;
277 freezable_schedule_timeout_killable(*timeout
);
278 if (fatal_signal_pending(current
))
284 /* This is the error handling routine for processes that are allowed
287 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
289 struct nfs_client
*clp
= server
->nfs_client
;
290 struct nfs4_state
*state
= exception
->state
;
291 struct inode
*inode
= exception
->inode
;
294 exception
->retry
= 0;
298 case -NFS4ERR_OPENMODE
:
299 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
300 nfs4_inode_return_delegation(inode
);
301 exception
->retry
= 1;
306 nfs4_schedule_stateid_recovery(server
, state
);
307 goto wait_on_recovery
;
308 case -NFS4ERR_DELEG_REVOKED
:
309 case -NFS4ERR_ADMIN_REVOKED
:
310 case -NFS4ERR_BAD_STATEID
:
313 nfs_remove_bad_delegation(state
->inode
);
314 nfs4_schedule_stateid_recovery(server
, state
);
315 goto wait_on_recovery
;
316 case -NFS4ERR_EXPIRED
:
318 nfs4_schedule_stateid_recovery(server
, state
);
319 case -NFS4ERR_STALE_STATEID
:
320 case -NFS4ERR_STALE_CLIENTID
:
321 nfs4_schedule_lease_recovery(clp
);
322 goto wait_on_recovery
;
323 #if defined(CONFIG_NFS_V4_1)
324 case -NFS4ERR_BADSESSION
:
325 case -NFS4ERR_BADSLOT
:
326 case -NFS4ERR_BAD_HIGH_SLOT
:
327 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
328 case -NFS4ERR_DEADSESSION
:
329 case -NFS4ERR_SEQ_FALSE_RETRY
:
330 case -NFS4ERR_SEQ_MISORDERED
:
331 dprintk("%s ERROR: %d Reset session\n", __func__
,
333 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
334 exception
->retry
= 1;
336 #endif /* defined(CONFIG_NFS_V4_1) */
337 case -NFS4ERR_FILE_OPEN
:
338 if (exception
->timeout
> HZ
) {
339 /* We have retried a decent amount, time to
348 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
351 case -NFS4ERR_RETRY_UNCACHED_REP
:
352 case -NFS4ERR_OLD_STATEID
:
353 exception
->retry
= 1;
355 case -NFS4ERR_BADOWNER
:
356 /* The following works around a Linux server bug! */
357 case -NFS4ERR_BADNAME
:
358 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
359 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
360 exception
->retry
= 1;
361 printk(KERN_WARNING
"NFS: v4 server %s "
362 "does not accept raw "
364 "Reenabling the idmapper.\n",
365 server
->nfs_client
->cl_hostname
);
368 /* We failed to handle the error */
369 return nfs4_map_errors(ret
);
371 ret
= nfs4_wait_clnt_recover(clp
);
373 exception
->retry
= 1;
378 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
380 spin_lock(&clp
->cl_lock
);
381 if (time_before(clp
->cl_last_renewal
,timestamp
))
382 clp
->cl_last_renewal
= timestamp
;
383 spin_unlock(&clp
->cl_lock
);
386 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
388 do_renew_lease(server
->nfs_client
, timestamp
);
391 #if defined(CONFIG_NFS_V4_1)
394 * nfs4_free_slot - free a slot and efficiently update slot table.
396 * freeing a slot is trivially done by clearing its respective bit
398 * If the freed slotid equals highest_used_slotid we want to update it
399 * so that the server would be able to size down the slot table if needed,
400 * otherwise we know that the highest_used_slotid is still in use.
401 * When updating highest_used_slotid there may be "holes" in the bitmap
402 * so we need to scan down from highest_used_slotid to 0 looking for the now
403 * highest slotid in use.
404 * If none found, highest_used_slotid is set to NFS4_NO_SLOT.
406 * Must be called while holding tbl->slot_tbl_lock
409 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u32 slotid
)
411 BUG_ON(slotid
>= NFS4_MAX_SLOT_TABLE
);
412 /* clear used bit in bitmap */
413 __clear_bit(slotid
, tbl
->used_slots
);
415 /* update highest_used_slotid when it is freed */
416 if (slotid
== tbl
->highest_used_slotid
) {
417 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
418 if (slotid
< tbl
->max_slots
)
419 tbl
->highest_used_slotid
= slotid
;
421 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
423 dprintk("%s: slotid %u highest_used_slotid %d\n", __func__
,
424 slotid
, tbl
->highest_used_slotid
);
427 bool nfs4_set_task_privileged(struct rpc_task
*task
, void *dummy
)
429 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
434 * Signal state manager thread if session fore channel is drained
436 static void nfs4_check_drain_fc_complete(struct nfs4_session
*ses
)
438 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
439 rpc_wake_up_first(&ses
->fc_slot_table
.slot_tbl_waitq
,
440 nfs4_set_task_privileged
, NULL
);
444 if (ses
->fc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
447 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__
);
448 complete(&ses
->fc_slot_table
.complete
);
452 * Signal state manager thread if session back channel is drained
454 void nfs4_check_drain_bc_complete(struct nfs4_session
*ses
)
456 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
) ||
457 ses
->bc_slot_table
.highest_used_slotid
!= NFS4_NO_SLOT
)
459 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__
);
460 complete(&ses
->bc_slot_table
.complete
);
463 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
465 struct nfs4_slot_table
*tbl
;
467 tbl
= &res
->sr_session
->fc_slot_table
;
469 /* just wake up the next guy waiting since
470 * we may have not consumed a slot after all */
471 dprintk("%s: No slot\n", __func__
);
475 spin_lock(&tbl
->slot_tbl_lock
);
476 nfs4_free_slot(tbl
, res
->sr_slot
- tbl
->slots
);
477 nfs4_check_drain_fc_complete(res
->sr_session
);
478 spin_unlock(&tbl
->slot_tbl_lock
);
482 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
484 unsigned long timestamp
;
485 struct nfs_client
*clp
;
488 * sr_status remains 1 if an RPC level error occurred. The server
489 * may or may not have processed the sequence operation..
490 * Proceed as if the server received and processed the sequence
493 if (res
->sr_status
== 1)
494 res
->sr_status
= NFS_OK
;
496 /* don't increment the sequence number if the task wasn't sent */
497 if (!RPC_WAS_SENT(task
))
500 /* Check the SEQUENCE operation status */
501 switch (res
->sr_status
) {
503 /* Update the slot's sequence and clientid lease timer */
504 ++res
->sr_slot
->seq_nr
;
505 timestamp
= res
->sr_renewal_time
;
506 clp
= res
->sr_session
->clp
;
507 do_renew_lease(clp
, timestamp
);
508 /* Check sequence flags */
509 if (res
->sr_status_flags
!= 0)
510 nfs4_schedule_lease_recovery(clp
);
513 /* The server detected a resend of the RPC call and
514 * returned NFS4ERR_DELAY as per Section 2.10.6.2
517 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
519 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
520 res
->sr_slot
->seq_nr
);
523 /* Just update the slot sequence no. */
524 ++res
->sr_slot
->seq_nr
;
527 /* The session may be reset by one of the error handlers. */
528 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
529 nfs41_sequence_free_slot(res
);
532 if (!rpc_restart_call(task
))
534 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
538 static int nfs4_sequence_done(struct rpc_task
*task
,
539 struct nfs4_sequence_res
*res
)
541 if (res
->sr_session
== NULL
)
543 return nfs41_sequence_done(task
, res
);
547 * nfs4_find_slot - efficiently look for a free slot
549 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
550 * If found, we mark the slot as used, update the highest_used_slotid,
551 * and respectively set up the sequence operation args.
552 * The slot number is returned if found, or NFS4_NO_SLOT otherwise.
554 * Note: must be called with under the slot_tbl_lock.
557 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
560 u32 ret_id
= NFS4_NO_SLOT
;
562 dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n",
563 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
565 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
566 if (slotid
>= tbl
->max_slots
)
568 __set_bit(slotid
, tbl
->used_slots
);
569 if (slotid
> tbl
->highest_used_slotid
||
570 tbl
->highest_used_slotid
== NFS4_NO_SLOT
)
571 tbl
->highest_used_slotid
= slotid
;
574 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
575 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
579 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
580 struct nfs4_sequence_res
*res
, int cache_reply
)
582 args
->sa_session
= NULL
;
583 args
->sa_cache_this
= 0;
585 args
->sa_cache_this
= 1;
586 res
->sr_session
= NULL
;
590 int nfs41_setup_sequence(struct nfs4_session
*session
,
591 struct nfs4_sequence_args
*args
,
592 struct nfs4_sequence_res
*res
,
593 struct rpc_task
*task
)
595 struct nfs4_slot
*slot
;
596 struct nfs4_slot_table
*tbl
;
599 dprintk("--> %s\n", __func__
);
600 /* slot already allocated? */
601 if (res
->sr_slot
!= NULL
)
604 tbl
= &session
->fc_slot_table
;
606 spin_lock(&tbl
->slot_tbl_lock
);
607 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
608 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
609 /* The state manager will wait until the slot table is empty */
610 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
611 spin_unlock(&tbl
->slot_tbl_lock
);
612 dprintk("%s session is draining\n", __func__
);
616 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
617 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
618 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
619 spin_unlock(&tbl
->slot_tbl_lock
);
620 dprintk("%s enforce FIFO order\n", __func__
);
624 slotid
= nfs4_find_slot(tbl
);
625 if (slotid
== NFS4_NO_SLOT
) {
626 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
627 spin_unlock(&tbl
->slot_tbl_lock
);
628 dprintk("<-- %s: no free slots\n", __func__
);
631 spin_unlock(&tbl
->slot_tbl_lock
);
633 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
634 slot
= tbl
->slots
+ slotid
;
635 args
->sa_session
= session
;
636 args
->sa_slotid
= slotid
;
638 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
640 res
->sr_session
= session
;
642 res
->sr_renewal_time
= jiffies
;
643 res
->sr_status_flags
= 0;
645 * sr_status is only set in decode_sequence, and so will remain
646 * set to 1 if an rpc level failure occurs.
651 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
653 int nfs4_setup_sequence(const struct nfs_server
*server
,
654 struct nfs4_sequence_args
*args
,
655 struct nfs4_sequence_res
*res
,
656 struct rpc_task
*task
)
658 struct nfs4_session
*session
= nfs4_get_session(server
);
664 dprintk("--> %s clp %p session %p sr_slot %td\n",
665 __func__
, session
->clp
, session
, res
->sr_slot
?
666 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
668 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
670 dprintk("<-- %s status=%d\n", __func__
, ret
);
674 struct nfs41_call_sync_data
{
675 const struct nfs_server
*seq_server
;
676 struct nfs4_sequence_args
*seq_args
;
677 struct nfs4_sequence_res
*seq_res
;
680 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
682 struct nfs41_call_sync_data
*data
= calldata
;
684 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
686 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
687 data
->seq_res
, task
))
689 rpc_call_start(task
);
692 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
694 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
695 nfs41_call_sync_prepare(task
, calldata
);
698 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
700 struct nfs41_call_sync_data
*data
= calldata
;
702 nfs41_sequence_done(task
, data
->seq_res
);
705 static const struct rpc_call_ops nfs41_call_sync_ops
= {
706 .rpc_call_prepare
= nfs41_call_sync_prepare
,
707 .rpc_call_done
= nfs41_call_sync_done
,
710 static const struct rpc_call_ops nfs41_call_priv_sync_ops
= {
711 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
712 .rpc_call_done
= nfs41_call_sync_done
,
715 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
716 struct nfs_server
*server
,
717 struct rpc_message
*msg
,
718 struct nfs4_sequence_args
*args
,
719 struct nfs4_sequence_res
*res
,
723 struct rpc_task
*task
;
724 struct nfs41_call_sync_data data
= {
725 .seq_server
= server
,
729 struct rpc_task_setup task_setup
= {
732 .callback_ops
= &nfs41_call_sync_ops
,
733 .callback_data
= &data
737 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
738 task
= rpc_run_task(&task_setup
);
742 ret
= task
->tk_status
;
748 int _nfs4_call_sync_session(struct rpc_clnt
*clnt
,
749 struct nfs_server
*server
,
750 struct rpc_message
*msg
,
751 struct nfs4_sequence_args
*args
,
752 struct nfs4_sequence_res
*res
,
755 nfs41_init_sequence(args
, res
, cache_reply
);
756 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
, 0);
761 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
762 struct nfs4_sequence_res
*res
, int cache_reply
)
766 static int nfs4_sequence_done(struct rpc_task
*task
,
767 struct nfs4_sequence_res
*res
)
771 #endif /* CONFIG_NFS_V4_1 */
773 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
774 struct nfs_server
*server
,
775 struct rpc_message
*msg
,
776 struct nfs4_sequence_args
*args
,
777 struct nfs4_sequence_res
*res
,
780 nfs41_init_sequence(args
, res
, cache_reply
);
781 return rpc_call_sync(clnt
, msg
, 0);
785 int nfs4_call_sync(struct rpc_clnt
*clnt
,
786 struct nfs_server
*server
,
787 struct rpc_message
*msg
,
788 struct nfs4_sequence_args
*args
,
789 struct nfs4_sequence_res
*res
,
792 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
793 args
, res
, cache_reply
);
796 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
798 struct nfs_inode
*nfsi
= NFS_I(dir
);
800 spin_lock(&dir
->i_lock
);
801 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
802 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
803 nfs_force_lookup_revalidate(dir
);
804 dir
->i_version
= cinfo
->after
;
805 spin_unlock(&dir
->i_lock
);
808 struct nfs4_opendata
{
810 struct nfs_openargs o_arg
;
811 struct nfs_openres o_res
;
812 struct nfs_open_confirmargs c_arg
;
813 struct nfs_open_confirmres c_res
;
814 struct nfs4_string owner_name
;
815 struct nfs4_string group_name
;
816 struct nfs_fattr f_attr
;
818 struct dentry
*dentry
;
819 struct nfs4_state_owner
*owner
;
820 struct nfs4_state
*state
;
822 unsigned long timestamp
;
823 unsigned int rpc_done
: 1;
829 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
831 p
->o_res
.f_attr
= &p
->f_attr
;
832 p
->o_res
.seqid
= p
->o_arg
.seqid
;
833 p
->c_res
.seqid
= p
->c_arg
.seqid
;
834 p
->o_res
.server
= p
->o_arg
.server
;
835 nfs_fattr_init(&p
->f_attr
);
836 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
839 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
840 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
841 const struct iattr
*attrs
,
844 struct dentry
*parent
= dget_parent(dentry
);
845 struct inode
*dir
= parent
->d_inode
;
846 struct nfs_server
*server
= NFS_SERVER(dir
);
847 struct nfs4_opendata
*p
;
849 p
= kzalloc(sizeof(*p
), gfp_mask
);
852 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
853 if (p
->o_arg
.seqid
== NULL
)
855 nfs_sb_active(dentry
->d_sb
);
856 p
->dentry
= dget(dentry
);
859 atomic_inc(&sp
->so_count
);
860 p
->o_arg
.fh
= NFS_FH(dir
);
861 p
->o_arg
.open_flags
= flags
;
862 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
863 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
864 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
865 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
866 p
->o_arg
.name
= &dentry
->d_name
;
867 p
->o_arg
.server
= server
;
868 p
->o_arg
.bitmask
= server
->attr_bitmask
;
869 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
870 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
871 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
874 p
->o_arg
.u
.attrs
= &p
->attrs
;
875 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
878 verf
[1] = current
->pid
;
879 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
880 sizeof(p
->o_arg
.u
.verifier
.data
));
882 p
->c_arg
.fh
= &p
->o_res
.fh
;
883 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
884 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
885 nfs4_init_opendata_res(p
);
895 static void nfs4_opendata_free(struct kref
*kref
)
897 struct nfs4_opendata
*p
= container_of(kref
,
898 struct nfs4_opendata
, kref
);
899 struct super_block
*sb
= p
->dentry
->d_sb
;
901 nfs_free_seqid(p
->o_arg
.seqid
);
902 if (p
->state
!= NULL
)
903 nfs4_put_open_state(p
->state
);
904 nfs4_put_state_owner(p
->owner
);
908 nfs_fattr_free_names(&p
->f_attr
);
912 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
915 kref_put(&p
->kref
, nfs4_opendata_free
);
918 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
922 ret
= rpc_wait_for_completion_task(task
);
926 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
930 if (open_mode
& (O_EXCL
|O_TRUNC
))
932 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
934 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
935 && state
->n_rdonly
!= 0;
938 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
939 && state
->n_wronly
!= 0;
941 case FMODE_READ
|FMODE_WRITE
:
942 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
943 && state
->n_rdwr
!= 0;
949 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
951 if (delegation
== NULL
)
953 if ((delegation
->type
& fmode
) != fmode
)
955 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
957 nfs_mark_delegation_referenced(delegation
);
961 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
970 case FMODE_READ
|FMODE_WRITE
:
973 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
976 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
978 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
979 nfs4_stateid_copy(&state
->stateid
, stateid
);
980 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
983 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
986 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
988 case FMODE_READ
|FMODE_WRITE
:
989 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
993 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
995 write_seqlock(&state
->seqlock
);
996 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
997 write_sequnlock(&state
->seqlock
);
1000 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1003 * Protect the call to nfs4_state_set_mode_locked and
1004 * serialise the stateid update
1006 write_seqlock(&state
->seqlock
);
1007 if (deleg_stateid
!= NULL
) {
1008 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1009 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1011 if (open_stateid
!= NULL
)
1012 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1013 write_sequnlock(&state
->seqlock
);
1014 spin_lock(&state
->owner
->so_lock
);
1015 update_open_stateflags(state
, fmode
);
1016 spin_unlock(&state
->owner
->so_lock
);
1019 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1021 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1022 struct nfs_delegation
*deleg_cur
;
1025 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1028 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1029 if (deleg_cur
== NULL
)
1032 spin_lock(&deleg_cur
->lock
);
1033 if (nfsi
->delegation
!= deleg_cur
||
1034 (deleg_cur
->type
& fmode
) != fmode
)
1035 goto no_delegation_unlock
;
1037 if (delegation
== NULL
)
1038 delegation
= &deleg_cur
->stateid
;
1039 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1040 goto no_delegation_unlock
;
1042 nfs_mark_delegation_referenced(deleg_cur
);
1043 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1045 no_delegation_unlock
:
1046 spin_unlock(&deleg_cur
->lock
);
1050 if (!ret
&& open_stateid
!= NULL
) {
1051 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1059 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1061 struct nfs_delegation
*delegation
;
1064 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1065 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1070 nfs4_inode_return_delegation(inode
);
1073 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1075 struct nfs4_state
*state
= opendata
->state
;
1076 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1077 struct nfs_delegation
*delegation
;
1078 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1079 fmode_t fmode
= opendata
->o_arg
.fmode
;
1080 nfs4_stateid stateid
;
1084 if (can_open_cached(state
, fmode
, open_mode
)) {
1085 spin_lock(&state
->owner
->so_lock
);
1086 if (can_open_cached(state
, fmode
, open_mode
)) {
1087 update_open_stateflags(state
, fmode
);
1088 spin_unlock(&state
->owner
->so_lock
);
1089 goto out_return_state
;
1091 spin_unlock(&state
->owner
->so_lock
);
1094 delegation
= rcu_dereference(nfsi
->delegation
);
1095 if (!can_open_delegated(delegation
, fmode
)) {
1099 /* Save the delegation */
1100 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1102 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1107 /* Try to update the stateid using the delegation */
1108 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1109 goto out_return_state
;
1112 return ERR_PTR(ret
);
1114 atomic_inc(&state
->count
);
1118 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1120 struct inode
*inode
;
1121 struct nfs4_state
*state
= NULL
;
1122 struct nfs_delegation
*delegation
;
1125 if (!data
->rpc_done
) {
1126 state
= nfs4_try_open_cached(data
);
1131 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1133 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1134 ret
= PTR_ERR(inode
);
1138 state
= nfs4_get_open_state(inode
, data
->owner
);
1141 if (data
->o_res
.delegation_type
!= 0) {
1142 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
1143 int delegation_flags
= 0;
1146 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1148 delegation_flags
= delegation
->flags
;
1150 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1151 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1152 "returning a delegation for "
1153 "OPEN(CLAIM_DELEGATE_CUR)\n",
1155 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1156 nfs_inode_set_delegation(state
->inode
,
1157 data
->owner
->so_cred
,
1160 nfs_inode_reclaim_delegation(state
->inode
,
1161 data
->owner
->so_cred
,
1165 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1173 return ERR_PTR(ret
);
1176 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1178 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1179 struct nfs_open_context
*ctx
;
1181 spin_lock(&state
->inode
->i_lock
);
1182 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1183 if (ctx
->state
!= state
)
1185 get_nfs_open_context(ctx
);
1186 spin_unlock(&state
->inode
->i_lock
);
1189 spin_unlock(&state
->inode
->i_lock
);
1190 return ERR_PTR(-ENOENT
);
1193 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1195 struct nfs4_opendata
*opendata
;
1197 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1198 if (opendata
== NULL
)
1199 return ERR_PTR(-ENOMEM
);
1200 opendata
->state
= state
;
1201 atomic_inc(&state
->count
);
1205 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1207 struct nfs4_state
*newstate
;
1210 opendata
->o_arg
.open_flags
= 0;
1211 opendata
->o_arg
.fmode
= fmode
;
1212 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1213 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1214 nfs4_init_opendata_res(opendata
);
1215 ret
= _nfs4_recover_proc_open(opendata
);
1218 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1219 if (IS_ERR(newstate
))
1220 return PTR_ERR(newstate
);
1221 nfs4_close_state(newstate
, fmode
);
1226 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1228 struct nfs4_state
*newstate
;
1231 /* memory barrier prior to reading state->n_* */
1232 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1234 if (state
->n_rdwr
!= 0) {
1235 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1236 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1239 if (newstate
!= state
)
1242 if (state
->n_wronly
!= 0) {
1243 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1244 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1247 if (newstate
!= state
)
1250 if (state
->n_rdonly
!= 0) {
1251 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1252 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1255 if (newstate
!= state
)
1259 * We may have performed cached opens for all three recoveries.
1260 * Check if we need to update the current stateid.
1262 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1263 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1264 write_seqlock(&state
->seqlock
);
1265 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1266 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1267 write_sequnlock(&state
->seqlock
);
1274 * reclaim state on the server after a reboot.
1276 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1278 struct nfs_delegation
*delegation
;
1279 struct nfs4_opendata
*opendata
;
1280 fmode_t delegation_type
= 0;
1283 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1284 if (IS_ERR(opendata
))
1285 return PTR_ERR(opendata
);
1286 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1287 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1289 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1290 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1291 delegation_type
= delegation
->type
;
1293 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1294 status
= nfs4_open_recover(opendata
, state
);
1295 nfs4_opendata_put(opendata
);
1299 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1301 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1302 struct nfs4_exception exception
= { };
1305 err
= _nfs4_do_open_reclaim(ctx
, state
);
1306 if (err
!= -NFS4ERR_DELAY
)
1308 nfs4_handle_exception(server
, err
, &exception
);
1309 } while (exception
.retry
);
1313 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1315 struct nfs_open_context
*ctx
;
1318 ctx
= nfs4_state_find_open_context(state
);
1320 return PTR_ERR(ctx
);
1321 ret
= nfs4_do_open_reclaim(ctx
, state
);
1322 put_nfs_open_context(ctx
);
1326 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1328 struct nfs4_opendata
*opendata
;
1331 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1332 if (IS_ERR(opendata
))
1333 return PTR_ERR(opendata
);
1334 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1335 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1336 ret
= nfs4_open_recover(opendata
, state
);
1337 nfs4_opendata_put(opendata
);
1341 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1343 struct nfs4_exception exception
= { };
1344 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1347 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1353 case -NFS4ERR_BADSESSION
:
1354 case -NFS4ERR_BADSLOT
:
1355 case -NFS4ERR_BAD_HIGH_SLOT
:
1356 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1357 case -NFS4ERR_DEADSESSION
:
1358 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1360 case -NFS4ERR_STALE_CLIENTID
:
1361 case -NFS4ERR_STALE_STATEID
:
1362 case -NFS4ERR_EXPIRED
:
1363 /* Don't recall a delegation if it was lost */
1364 nfs4_schedule_lease_recovery(server
->nfs_client
);
1368 * The show must go on: exit, but mark the
1369 * stateid as needing recovery.
1371 case -NFS4ERR_DELEG_REVOKED
:
1372 case -NFS4ERR_ADMIN_REVOKED
:
1373 case -NFS4ERR_BAD_STATEID
:
1374 nfs_inode_find_state_and_recover(state
->inode
,
1376 nfs4_schedule_stateid_recovery(server
, state
);
1379 * User RPCSEC_GSS context has expired.
1380 * We cannot recover this stateid now, so
1381 * skip it and allow recovery thread to
1388 err
= nfs4_handle_exception(server
, err
, &exception
);
1389 } while (exception
.retry
);
1394 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1396 struct nfs4_opendata
*data
= calldata
;
1398 data
->rpc_status
= task
->tk_status
;
1399 if (data
->rpc_status
== 0) {
1400 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1401 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1402 renew_lease(data
->o_res
.server
, data
->timestamp
);
1407 static void nfs4_open_confirm_release(void *calldata
)
1409 struct nfs4_opendata
*data
= calldata
;
1410 struct nfs4_state
*state
= NULL
;
1412 /* If this request hasn't been cancelled, do nothing */
1413 if (data
->cancelled
== 0)
1415 /* In case of error, no cleanup! */
1416 if (!data
->rpc_done
)
1418 state
= nfs4_opendata_to_nfs4_state(data
);
1420 nfs4_close_state(state
, data
->o_arg
.fmode
);
1422 nfs4_opendata_put(data
);
1425 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1426 .rpc_call_done
= nfs4_open_confirm_done
,
1427 .rpc_release
= nfs4_open_confirm_release
,
1431 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1433 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1435 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1436 struct rpc_task
*task
;
1437 struct rpc_message msg
= {
1438 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1439 .rpc_argp
= &data
->c_arg
,
1440 .rpc_resp
= &data
->c_res
,
1441 .rpc_cred
= data
->owner
->so_cred
,
1443 struct rpc_task_setup task_setup_data
= {
1444 .rpc_client
= server
->client
,
1445 .rpc_message
= &msg
,
1446 .callback_ops
= &nfs4_open_confirm_ops
,
1447 .callback_data
= data
,
1448 .workqueue
= nfsiod_workqueue
,
1449 .flags
= RPC_TASK_ASYNC
,
1453 kref_get(&data
->kref
);
1455 data
->rpc_status
= 0;
1456 data
->timestamp
= jiffies
;
1457 task
= rpc_run_task(&task_setup_data
);
1459 return PTR_ERR(task
);
1460 status
= nfs4_wait_for_completion_rpc_task(task
);
1462 data
->cancelled
= 1;
1465 status
= data
->rpc_status
;
1470 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1472 struct nfs4_opendata
*data
= calldata
;
1473 struct nfs4_state_owner
*sp
= data
->owner
;
1475 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1478 * Check if we still need to send an OPEN call, or if we can use
1479 * a delegation instead.
1481 if (data
->state
!= NULL
) {
1482 struct nfs_delegation
*delegation
;
1484 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1487 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1488 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1489 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1490 goto unlock_no_action
;
1493 /* Update client id. */
1494 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1495 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1496 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1497 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1499 data
->timestamp
= jiffies
;
1500 if (nfs4_setup_sequence(data
->o_arg
.server
,
1501 &data
->o_arg
.seq_args
,
1502 &data
->o_res
.seq_res
, task
))
1504 rpc_call_start(task
);
1509 task
->tk_action
= NULL
;
1513 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1515 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1516 nfs4_open_prepare(task
, calldata
);
1519 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1521 struct nfs4_opendata
*data
= calldata
;
1523 data
->rpc_status
= task
->tk_status
;
1525 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1528 if (task
->tk_status
== 0) {
1529 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1533 data
->rpc_status
= -ELOOP
;
1536 data
->rpc_status
= -EISDIR
;
1539 data
->rpc_status
= -ENOTDIR
;
1541 renew_lease(data
->o_res
.server
, data
->timestamp
);
1542 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1543 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1548 static void nfs4_open_release(void *calldata
)
1550 struct nfs4_opendata
*data
= calldata
;
1551 struct nfs4_state
*state
= NULL
;
1553 /* If this request hasn't been cancelled, do nothing */
1554 if (data
->cancelled
== 0)
1556 /* In case of error, no cleanup! */
1557 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1559 /* In case we need an open_confirm, no cleanup! */
1560 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1562 state
= nfs4_opendata_to_nfs4_state(data
);
1564 nfs4_close_state(state
, data
->o_arg
.fmode
);
1566 nfs4_opendata_put(data
);
1569 static const struct rpc_call_ops nfs4_open_ops
= {
1570 .rpc_call_prepare
= nfs4_open_prepare
,
1571 .rpc_call_done
= nfs4_open_done
,
1572 .rpc_release
= nfs4_open_release
,
1575 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1576 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1577 .rpc_call_done
= nfs4_open_done
,
1578 .rpc_release
= nfs4_open_release
,
1581 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1583 struct inode
*dir
= data
->dir
->d_inode
;
1584 struct nfs_server
*server
= NFS_SERVER(dir
);
1585 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1586 struct nfs_openres
*o_res
= &data
->o_res
;
1587 struct rpc_task
*task
;
1588 struct rpc_message msg
= {
1589 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1592 .rpc_cred
= data
->owner
->so_cred
,
1594 struct rpc_task_setup task_setup_data
= {
1595 .rpc_client
= server
->client
,
1596 .rpc_message
= &msg
,
1597 .callback_ops
= &nfs4_open_ops
,
1598 .callback_data
= data
,
1599 .workqueue
= nfsiod_workqueue
,
1600 .flags
= RPC_TASK_ASYNC
,
1604 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1605 kref_get(&data
->kref
);
1607 data
->rpc_status
= 0;
1608 data
->cancelled
= 0;
1610 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1611 task
= rpc_run_task(&task_setup_data
);
1613 return PTR_ERR(task
);
1614 status
= nfs4_wait_for_completion_rpc_task(task
);
1616 data
->cancelled
= 1;
1619 status
= data
->rpc_status
;
1625 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1627 struct inode
*dir
= data
->dir
->d_inode
;
1628 struct nfs_openres
*o_res
= &data
->o_res
;
1631 status
= nfs4_run_open_task(data
, 1);
1632 if (status
!= 0 || !data
->rpc_done
)
1635 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1637 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1638 status
= _nfs4_proc_open_confirm(data
);
1647 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1649 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1651 struct inode
*dir
= data
->dir
->d_inode
;
1652 struct nfs_server
*server
= NFS_SERVER(dir
);
1653 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1654 struct nfs_openres
*o_res
= &data
->o_res
;
1657 status
= nfs4_run_open_task(data
, 0);
1658 if (!data
->rpc_done
)
1661 if (status
== -NFS4ERR_BADNAME
&&
1662 !(o_arg
->open_flags
& O_CREAT
))
1667 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1669 if (o_arg
->open_flags
& O_CREAT
)
1670 update_changeattr(dir
, &o_res
->cinfo
);
1671 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1672 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1673 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1674 status
= _nfs4_proc_open_confirm(data
);
1678 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1679 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1683 static int nfs4_client_recover_expired_lease(struct nfs_client
*clp
)
1688 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1689 ret
= nfs4_wait_clnt_recover(clp
);
1692 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1693 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1695 nfs4_schedule_state_manager(clp
);
1701 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1703 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1708 * reclaim state on the server after a network partition.
1709 * Assumes caller holds the appropriate lock
1711 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1713 struct nfs4_opendata
*opendata
;
1716 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1717 if (IS_ERR(opendata
))
1718 return PTR_ERR(opendata
);
1719 ret
= nfs4_open_recover(opendata
, state
);
1721 d_drop(ctx
->dentry
);
1722 nfs4_opendata_put(opendata
);
1726 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1728 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1729 struct nfs4_exception exception
= { };
1733 err
= _nfs4_open_expired(ctx
, state
);
1737 case -NFS4ERR_GRACE
:
1738 case -NFS4ERR_DELAY
:
1739 nfs4_handle_exception(server
, err
, &exception
);
1742 } while (exception
.retry
);
1747 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1749 struct nfs_open_context
*ctx
;
1752 ctx
= nfs4_state_find_open_context(state
);
1754 return PTR_ERR(ctx
);
1755 ret
= nfs4_do_open_expired(ctx
, state
);
1756 put_nfs_open_context(ctx
);
1760 #if defined(CONFIG_NFS_V4_1)
1761 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1763 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1764 nfs4_stateid
*stateid
= &state
->stateid
;
1767 /* If a state reset has been done, test_stateid is unneeded */
1768 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1771 status
= nfs41_test_stateid(server
, stateid
);
1772 if (status
!= NFS_OK
) {
1773 /* Free the stateid unless the server explicitly
1774 * informs us the stateid is unrecognized. */
1775 if (status
!= -NFS4ERR_BAD_STATEID
)
1776 nfs41_free_stateid(server
, stateid
);
1778 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1783 * nfs41_check_open_stateid - possibly free an open stateid
1785 * @state: NFSv4 state for an inode
1787 * Returns NFS_OK if recovery for this stateid is now finished.
1788 * Otherwise a negative NFS4ERR value is returned.
1790 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1792 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1793 nfs4_stateid
*stateid
= &state
->stateid
;
1796 /* If a state reset has been done, test_stateid is unneeded */
1797 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1798 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1799 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1800 return -NFS4ERR_BAD_STATEID
;
1802 status
= nfs41_test_stateid(server
, stateid
);
1803 if (status
!= NFS_OK
) {
1804 /* Free the stateid unless the server explicitly
1805 * informs us the stateid is unrecognized. */
1806 if (status
!= -NFS4ERR_BAD_STATEID
)
1807 nfs41_free_stateid(server
, stateid
);
1809 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1810 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1811 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1816 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1820 nfs41_clear_delegation_stateid(state
);
1821 status
= nfs41_check_open_stateid(state
);
1822 if (status
!= NFS_OK
)
1823 status
= nfs4_open_expired(sp
, state
);
1829 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1830 * fields corresponding to attributes that were used to store the verifier.
1831 * Make sure we clobber those fields in the later setattr call
1833 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1835 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1836 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1837 sattr
->ia_valid
|= ATTR_ATIME
;
1839 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1840 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1841 sattr
->ia_valid
|= ATTR_MTIME
;
1845 * Returns a referenced nfs4_state
1847 static int _nfs4_do_open(struct inode
*dir
,
1848 struct dentry
*dentry
,
1851 struct iattr
*sattr
,
1852 struct rpc_cred
*cred
,
1853 struct nfs4_state
**res
,
1854 struct nfs4_threshold
**ctx_th
)
1856 struct nfs4_state_owner
*sp
;
1857 struct nfs4_state
*state
= NULL
;
1858 struct nfs_server
*server
= NFS_SERVER(dir
);
1859 struct nfs4_opendata
*opendata
;
1862 /* Protect against reboot recovery conflicts */
1864 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1866 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1869 status
= nfs4_recover_expired_lease(server
);
1871 goto err_put_state_owner
;
1872 if (dentry
->d_inode
!= NULL
)
1873 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1875 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1876 if (opendata
== NULL
)
1877 goto err_put_state_owner
;
1879 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
1880 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
1881 if (!opendata
->f_attr
.mdsthreshold
)
1882 goto err_opendata_put
;
1883 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
1885 if (dentry
->d_inode
!= NULL
)
1886 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1888 status
= _nfs4_proc_open(opendata
);
1890 goto err_opendata_put
;
1892 state
= nfs4_opendata_to_nfs4_state(opendata
);
1893 status
= PTR_ERR(state
);
1895 goto err_opendata_put
;
1896 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1897 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1899 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1900 nfs4_exclusive_attrset(opendata
, sattr
);
1902 nfs_fattr_init(opendata
->o_res
.f_attr
);
1903 status
= nfs4_do_setattr(state
->inode
, cred
,
1904 opendata
->o_res
.f_attr
, sattr
,
1907 nfs_setattr_update_inode(state
->inode
, sattr
);
1908 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1911 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
1912 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
1914 kfree(opendata
->f_attr
.mdsthreshold
);
1915 opendata
->f_attr
.mdsthreshold
= NULL
;
1917 nfs4_opendata_put(opendata
);
1918 nfs4_put_state_owner(sp
);
1922 kfree(opendata
->f_attr
.mdsthreshold
);
1923 nfs4_opendata_put(opendata
);
1924 err_put_state_owner
:
1925 nfs4_put_state_owner(sp
);
1932 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
1933 struct dentry
*dentry
,
1936 struct iattr
*sattr
,
1937 struct rpc_cred
*cred
,
1938 struct nfs4_threshold
**ctx_th
)
1940 struct nfs4_exception exception
= { };
1941 struct nfs4_state
*res
;
1944 fmode
&= FMODE_READ
|FMODE_WRITE
;
1946 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
1950 /* NOTE: BAD_SEQID means the server and client disagree about the
1951 * book-keeping w.r.t. state-changing operations
1952 * (OPEN/CLOSE/LOCK/LOCKU...)
1953 * It is actually a sign of a bug on the client or on the server.
1955 * If we receive a BAD_SEQID error in the particular case of
1956 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1957 * have unhashed the old state_owner for us, and that we can
1958 * therefore safely retry using a new one. We should still warn
1959 * the user though...
1961 if (status
== -NFS4ERR_BAD_SEQID
) {
1962 pr_warn_ratelimited("NFS: v4 server %s "
1963 " returned a bad sequence-id error!\n",
1964 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1965 exception
.retry
= 1;
1969 * BAD_STATEID on OPEN means that the server cancelled our
1970 * state before it received the OPEN_CONFIRM.
1971 * Recover by retrying the request as per the discussion
1972 * on Page 181 of RFC3530.
1974 if (status
== -NFS4ERR_BAD_STATEID
) {
1975 exception
.retry
= 1;
1978 if (status
== -EAGAIN
) {
1979 /* We must have found a delegation */
1980 exception
.retry
= 1;
1983 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1984 status
, &exception
));
1985 } while (exception
.retry
);
1989 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1990 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1991 struct nfs4_state
*state
)
1993 struct nfs_server
*server
= NFS_SERVER(inode
);
1994 struct nfs_setattrargs arg
= {
1995 .fh
= NFS_FH(inode
),
1998 .bitmask
= server
->attr_bitmask
,
2000 struct nfs_setattrres res
= {
2004 struct rpc_message msg
= {
2005 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2010 unsigned long timestamp
= jiffies
;
2013 nfs_fattr_init(fattr
);
2015 if (state
!= NULL
) {
2016 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2017 current
->files
, current
->tgid
);
2018 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
2020 /* Use that stateid */
2022 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2024 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2025 if (status
== 0 && state
!= NULL
)
2026 renew_lease(server
, timestamp
);
2030 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2031 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2032 struct nfs4_state
*state
)
2034 struct nfs_server
*server
= NFS_SERVER(inode
);
2035 struct nfs4_exception exception
= {
2041 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2043 case -NFS4ERR_OPENMODE
:
2044 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2046 if (sattr
->ia_valid
& ATTR_OPEN
)
2051 err
= nfs4_handle_exception(server
, err
, &exception
);
2052 } while (exception
.retry
);
2057 struct nfs4_closedata
{
2058 struct inode
*inode
;
2059 struct nfs4_state
*state
;
2060 struct nfs_closeargs arg
;
2061 struct nfs_closeres res
;
2062 struct nfs_fattr fattr
;
2063 unsigned long timestamp
;
2068 static void nfs4_free_closedata(void *data
)
2070 struct nfs4_closedata
*calldata
= data
;
2071 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2072 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2075 pnfs_roc_release(calldata
->state
->inode
);
2076 nfs4_put_open_state(calldata
->state
);
2077 nfs_free_seqid(calldata
->arg
.seqid
);
2078 nfs4_put_state_owner(sp
);
2079 nfs_sb_deactive(sb
);
2083 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2086 spin_lock(&state
->owner
->so_lock
);
2087 if (!(fmode
& FMODE_READ
))
2088 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2089 if (!(fmode
& FMODE_WRITE
))
2090 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2091 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2092 spin_unlock(&state
->owner
->so_lock
);
2095 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2097 struct nfs4_closedata
*calldata
= data
;
2098 struct nfs4_state
*state
= calldata
->state
;
2099 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2101 dprintk("%s: begin!\n", __func__
);
2102 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2104 /* hmm. we are done with the inode, and in the process of freeing
2105 * the state_owner. we keep this around to process errors
2107 switch (task
->tk_status
) {
2110 pnfs_roc_set_barrier(state
->inode
,
2111 calldata
->roc_barrier
);
2112 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2113 renew_lease(server
, calldata
->timestamp
);
2114 nfs4_close_clear_stateid_flags(state
,
2115 calldata
->arg
.fmode
);
2117 case -NFS4ERR_STALE_STATEID
:
2118 case -NFS4ERR_OLD_STATEID
:
2119 case -NFS4ERR_BAD_STATEID
:
2120 case -NFS4ERR_EXPIRED
:
2121 if (calldata
->arg
.fmode
== 0)
2124 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2125 rpc_restart_call_prepare(task
);
2127 nfs_release_seqid(calldata
->arg
.seqid
);
2128 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2129 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2132 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2134 struct nfs4_closedata
*calldata
= data
;
2135 struct nfs4_state
*state
= calldata
->state
;
2138 dprintk("%s: begin!\n", __func__
);
2139 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2142 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2143 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2144 spin_lock(&state
->owner
->so_lock
);
2145 /* Calculate the change in open mode */
2146 if (state
->n_rdwr
== 0) {
2147 if (state
->n_rdonly
== 0) {
2148 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2149 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2150 calldata
->arg
.fmode
&= ~FMODE_READ
;
2152 if (state
->n_wronly
== 0) {
2153 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2154 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2155 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2158 spin_unlock(&state
->owner
->so_lock
);
2161 /* Note: exit _without_ calling nfs4_close_done */
2162 task
->tk_action
= NULL
;
2166 if (calldata
->arg
.fmode
== 0) {
2167 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2168 if (calldata
->roc
&&
2169 pnfs_roc_drain(calldata
->inode
, &calldata
->roc_barrier
)) {
2170 rpc_sleep_on(&NFS_SERVER(calldata
->inode
)->roc_rpcwaitq
,
2176 nfs_fattr_init(calldata
->res
.fattr
);
2177 calldata
->timestamp
= jiffies
;
2178 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
2179 &calldata
->arg
.seq_args
,
2180 &calldata
->res
.seq_res
,
2183 rpc_call_start(task
);
2185 dprintk("%s: done!\n", __func__
);
2188 static const struct rpc_call_ops nfs4_close_ops
= {
2189 .rpc_call_prepare
= nfs4_close_prepare
,
2190 .rpc_call_done
= nfs4_close_done
,
2191 .rpc_release
= nfs4_free_closedata
,
2195 * It is possible for data to be read/written from a mem-mapped file
2196 * after the sys_close call (which hits the vfs layer as a flush).
2197 * This means that we can't safely call nfsv4 close on a file until
2198 * the inode is cleared. This in turn means that we are not good
2199 * NFSv4 citizens - we do not indicate to the server to update the file's
2200 * share state even when we are done with one of the three share
2201 * stateid's in the inode.
2203 * NOTE: Caller must be holding the sp->so_owner semaphore!
2205 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
, bool roc
)
2207 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2208 struct nfs4_closedata
*calldata
;
2209 struct nfs4_state_owner
*sp
= state
->owner
;
2210 struct rpc_task
*task
;
2211 struct rpc_message msg
= {
2212 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2213 .rpc_cred
= state
->owner
->so_cred
,
2215 struct rpc_task_setup task_setup_data
= {
2216 .rpc_client
= server
->client
,
2217 .rpc_message
= &msg
,
2218 .callback_ops
= &nfs4_close_ops
,
2219 .workqueue
= nfsiod_workqueue
,
2220 .flags
= RPC_TASK_ASYNC
,
2222 int status
= -ENOMEM
;
2224 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2225 if (calldata
== NULL
)
2227 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2228 calldata
->inode
= state
->inode
;
2229 calldata
->state
= state
;
2230 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2231 calldata
->arg
.stateid
= &state
->open_stateid
;
2232 /* Serialization for the sequence id */
2233 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2234 if (calldata
->arg
.seqid
== NULL
)
2235 goto out_free_calldata
;
2236 calldata
->arg
.fmode
= 0;
2237 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2238 calldata
->res
.fattr
= &calldata
->fattr
;
2239 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2240 calldata
->res
.server
= server
;
2241 calldata
->roc
= roc
;
2242 nfs_sb_active(calldata
->inode
->i_sb
);
2244 msg
.rpc_argp
= &calldata
->arg
;
2245 msg
.rpc_resp
= &calldata
->res
;
2246 task_setup_data
.callback_data
= calldata
;
2247 task
= rpc_run_task(&task_setup_data
);
2249 return PTR_ERR(task
);
2252 status
= rpc_wait_for_completion_task(task
);
2259 pnfs_roc_release(state
->inode
);
2260 nfs4_put_open_state(state
);
2261 nfs4_put_state_owner(sp
);
2265 static struct inode
*
2266 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2268 struct nfs4_state
*state
;
2270 /* Protect against concurrent sillydeletes */
2271 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2272 ctx
->cred
, &ctx
->mdsthreshold
);
2274 return ERR_CAST(state
);
2276 return igrab(state
->inode
);
2279 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2281 if (ctx
->state
== NULL
)
2284 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2286 nfs4_close_state(ctx
->state
, ctx
->mode
);
2289 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2291 struct nfs4_server_caps_arg args
= {
2294 struct nfs4_server_caps_res res
= {};
2295 struct rpc_message msg
= {
2296 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2302 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2304 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2305 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2306 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2307 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2308 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2309 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2310 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2311 server
->caps
|= NFS_CAP_ACLS
;
2312 if (res
.has_links
!= 0)
2313 server
->caps
|= NFS_CAP_HARDLINKS
;
2314 if (res
.has_symlinks
!= 0)
2315 server
->caps
|= NFS_CAP_SYMLINKS
;
2316 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2317 server
->caps
|= NFS_CAP_FILEID
;
2318 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2319 server
->caps
|= NFS_CAP_MODE
;
2320 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2321 server
->caps
|= NFS_CAP_NLINK
;
2322 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2323 server
->caps
|= NFS_CAP_OWNER
;
2324 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2325 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2326 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2327 server
->caps
|= NFS_CAP_ATIME
;
2328 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2329 server
->caps
|= NFS_CAP_CTIME
;
2330 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2331 server
->caps
|= NFS_CAP_MTIME
;
2333 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2334 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2335 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2336 server
->acl_bitmask
= res
.acl_bitmask
;
2337 server
->fh_expire_type
= res
.fh_expire_type
;
2343 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2345 struct nfs4_exception exception
= { };
2348 err
= nfs4_handle_exception(server
,
2349 _nfs4_server_capabilities(server
, fhandle
),
2351 } while (exception
.retry
);
2355 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2356 struct nfs_fsinfo
*info
)
2358 struct nfs4_lookup_root_arg args
= {
2359 .bitmask
= nfs4_fattr_bitmap
,
2361 struct nfs4_lookup_res res
= {
2363 .fattr
= info
->fattr
,
2366 struct rpc_message msg
= {
2367 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2372 nfs_fattr_init(info
->fattr
);
2373 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2376 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2377 struct nfs_fsinfo
*info
)
2379 struct nfs4_exception exception
= { };
2382 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2385 case -NFS4ERR_WRONGSEC
:
2388 err
= nfs4_handle_exception(server
, err
, &exception
);
2390 } while (exception
.retry
);
2395 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2396 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2398 struct rpc_auth
*auth
;
2401 auth
= rpcauth_create(flavor
, server
->client
);
2406 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2411 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2412 struct nfs_fsinfo
*info
)
2414 int i
, len
, status
= 0;
2415 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2417 len
= rpcauth_list_flavors(flav_array
, ARRAY_SIZE(flav_array
));
2420 for (i
= 0; i
< len
; i
++) {
2421 /* AUTH_UNIX is the default flavor if none was specified,
2422 * thus has already been tried. */
2423 if (flav_array
[i
] == RPC_AUTH_UNIX
)
2426 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2427 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2432 * -EACCESS could mean that the user doesn't have correct permissions
2433 * to access the mount. It could also mean that we tried to mount
2434 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2435 * existing mount programs don't handle -EACCES very well so it should
2436 * be mapped to -EPERM instead.
2438 if (status
== -EACCES
)
2444 * get the file handle for the "/" directory on the server
2446 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2447 struct nfs_fsinfo
*info
)
2449 int minor_version
= server
->nfs_client
->cl_minorversion
;
2450 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2451 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2453 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2454 * by nfs4_map_errors() as this function exits.
2456 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2458 status
= nfs4_server_capabilities(server
, fhandle
);
2460 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2461 return nfs4_map_errors(status
);
2464 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2465 struct nfs_fsinfo
*info
)
2468 struct nfs_fattr
*fattr
= info
->fattr
;
2470 error
= nfs4_server_capabilities(server
, mntfh
);
2472 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2476 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2478 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2482 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2483 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2484 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2490 * Get locations and (maybe) other attributes of a referral.
2491 * Note that we'll actually follow the referral later when
2492 * we detect fsid mismatch in inode revalidation
2494 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2495 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2496 struct nfs_fh
*fhandle
)
2498 int status
= -ENOMEM
;
2499 struct page
*page
= NULL
;
2500 struct nfs4_fs_locations
*locations
= NULL
;
2502 page
= alloc_page(GFP_KERNEL
);
2505 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2506 if (locations
== NULL
)
2509 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2512 /* Make sure server returned a different fsid for the referral */
2513 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2514 dprintk("%s: server did not return a different fsid for"
2515 " a referral at %s\n", __func__
, name
->name
);
2519 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2520 nfs_fixup_referral_attributes(&locations
->fattr
);
2522 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2523 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2524 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2532 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2534 struct nfs4_getattr_arg args
= {
2536 .bitmask
= server
->attr_bitmask
,
2538 struct nfs4_getattr_res res
= {
2542 struct rpc_message msg
= {
2543 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2548 nfs_fattr_init(fattr
);
2549 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2552 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2554 struct nfs4_exception exception
= { };
2557 err
= nfs4_handle_exception(server
,
2558 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2560 } while (exception
.retry
);
2565 * The file is not closed if it is opened due to the a request to change
2566 * the size of the file. The open call will not be needed once the
2567 * VFS layer lookup-intents are implemented.
2569 * Close is called when the inode is destroyed.
2570 * If we haven't opened the file for O_WRONLY, we
2571 * need to in the size_change case to obtain a stateid.
2574 * Because OPEN is always done by name in nfsv4, it is
2575 * possible that we opened a different file by the same
2576 * name. We can recognize this race condition, but we
2577 * can't do anything about it besides returning an error.
2579 * This will be fixed with VFS changes (lookup-intent).
2582 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2583 struct iattr
*sattr
)
2585 struct inode
*inode
= dentry
->d_inode
;
2586 struct rpc_cred
*cred
= NULL
;
2587 struct nfs4_state
*state
= NULL
;
2590 if (pnfs_ld_layoutret_on_setattr(inode
))
2591 pnfs_return_layout(inode
);
2593 nfs_fattr_init(fattr
);
2595 /* Deal with open(O_TRUNC) */
2596 if (sattr
->ia_valid
& ATTR_OPEN
)
2597 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2599 /* Optimization: if the end result is no change, don't RPC */
2600 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2603 /* Search for an existing open(O_WRITE) file */
2604 if (sattr
->ia_valid
& ATTR_FILE
) {
2605 struct nfs_open_context
*ctx
;
2607 ctx
= nfs_file_open_context(sattr
->ia_file
);
2614 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2616 nfs_setattr_update_inode(inode
, sattr
);
2620 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2621 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2622 struct nfs_fattr
*fattr
)
2624 struct nfs_server
*server
= NFS_SERVER(dir
);
2626 struct nfs4_lookup_arg args
= {
2627 .bitmask
= server
->attr_bitmask
,
2628 .dir_fh
= NFS_FH(dir
),
2631 struct nfs4_lookup_res res
= {
2636 struct rpc_message msg
= {
2637 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2642 nfs_fattr_init(fattr
);
2644 dprintk("NFS call lookup %s\n", name
->name
);
2645 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2646 dprintk("NFS reply lookup: %d\n", status
);
2650 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2652 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2653 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2654 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2658 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2659 struct qstr
*name
, struct nfs_fh
*fhandle
,
2660 struct nfs_fattr
*fattr
)
2662 struct nfs4_exception exception
= { };
2663 struct rpc_clnt
*client
= *clnt
;
2666 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2668 case -NFS4ERR_BADNAME
:
2671 case -NFS4ERR_MOVED
:
2672 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2674 case -NFS4ERR_WRONGSEC
:
2676 if (client
!= *clnt
)
2679 client
= nfs4_create_sec_client(client
, dir
, name
);
2681 return PTR_ERR(client
);
2683 exception
.retry
= 1;
2686 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2688 } while (exception
.retry
);
2693 else if (client
!= *clnt
)
2694 rpc_shutdown_client(client
);
2699 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2700 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2703 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2705 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2706 if (client
!= NFS_CLIENT(dir
)) {
2707 rpc_shutdown_client(client
);
2708 nfs_fixup_secinfo_attributes(fattr
);
2714 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2715 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2718 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2720 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2722 rpc_shutdown_client(client
);
2723 return ERR_PTR(status
);
2728 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2730 struct nfs_server
*server
= NFS_SERVER(inode
);
2731 struct nfs4_accessargs args
= {
2732 .fh
= NFS_FH(inode
),
2733 .bitmask
= server
->cache_consistency_bitmask
,
2735 struct nfs4_accessres res
= {
2738 struct rpc_message msg
= {
2739 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2742 .rpc_cred
= entry
->cred
,
2744 int mode
= entry
->mask
;
2748 * Determine which access bits we want to ask for...
2750 if (mode
& MAY_READ
)
2751 args
.access
|= NFS4_ACCESS_READ
;
2752 if (S_ISDIR(inode
->i_mode
)) {
2753 if (mode
& MAY_WRITE
)
2754 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2755 if (mode
& MAY_EXEC
)
2756 args
.access
|= NFS4_ACCESS_LOOKUP
;
2758 if (mode
& MAY_WRITE
)
2759 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2760 if (mode
& MAY_EXEC
)
2761 args
.access
|= NFS4_ACCESS_EXECUTE
;
2764 res
.fattr
= nfs_alloc_fattr();
2765 if (res
.fattr
== NULL
)
2768 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2771 if (res
.access
& NFS4_ACCESS_READ
)
2772 entry
->mask
|= MAY_READ
;
2773 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2774 entry
->mask
|= MAY_WRITE
;
2775 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2776 entry
->mask
|= MAY_EXEC
;
2777 nfs_refresh_inode(inode
, res
.fattr
);
2779 nfs_free_fattr(res
.fattr
);
2783 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2785 struct nfs4_exception exception
= { };
2788 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2789 _nfs4_proc_access(inode
, entry
),
2791 } while (exception
.retry
);
2796 * TODO: For the time being, we don't try to get any attributes
2797 * along with any of the zero-copy operations READ, READDIR,
2800 * In the case of the first three, we want to put the GETATTR
2801 * after the read-type operation -- this is because it is hard
2802 * to predict the length of a GETATTR response in v4, and thus
2803 * align the READ data correctly. This means that the GETATTR
2804 * may end up partially falling into the page cache, and we should
2805 * shift it into the 'tail' of the xdr_buf before processing.
2806 * To do this efficiently, we need to know the total length
2807 * of data received, which doesn't seem to be available outside
2810 * In the case of WRITE, we also want to put the GETATTR after
2811 * the operation -- in this case because we want to make sure
2812 * we get the post-operation mtime and size.
2814 * Both of these changes to the XDR layer would in fact be quite
2815 * minor, but I decided to leave them for a subsequent patch.
2817 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2818 unsigned int pgbase
, unsigned int pglen
)
2820 struct nfs4_readlink args
= {
2821 .fh
= NFS_FH(inode
),
2826 struct nfs4_readlink_res res
;
2827 struct rpc_message msg
= {
2828 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2833 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2836 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2837 unsigned int pgbase
, unsigned int pglen
)
2839 struct nfs4_exception exception
= { };
2842 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2843 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2845 } while (exception
.retry
);
2850 * This is just for mknod. open(O_CREAT) will always do ->open_context().
2853 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2856 struct nfs_open_context
*ctx
;
2857 struct nfs4_state
*state
;
2860 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
2862 return PTR_ERR(ctx
);
2864 sattr
->ia_mode
&= ~current_umask();
2865 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
2866 flags
, sattr
, ctx
->cred
,
2867 &ctx
->mdsthreshold
);
2869 if (IS_ERR(state
)) {
2870 status
= PTR_ERR(state
);
2873 d_add(dentry
, igrab(state
->inode
));
2874 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2877 put_nfs_open_context(ctx
);
2881 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2883 struct nfs_server
*server
= NFS_SERVER(dir
);
2884 struct nfs_removeargs args
= {
2888 struct nfs_removeres res
= {
2891 struct rpc_message msg
= {
2892 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2898 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2900 update_changeattr(dir
, &res
.cinfo
);
2904 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2906 struct nfs4_exception exception
= { };
2909 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2910 _nfs4_proc_remove(dir
, name
),
2912 } while (exception
.retry
);
2916 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2918 struct nfs_server
*server
= NFS_SERVER(dir
);
2919 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2920 struct nfs_removeres
*res
= msg
->rpc_resp
;
2922 res
->server
= server
;
2923 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2924 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
2927 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
2929 if (nfs4_setup_sequence(NFS_SERVER(data
->dir
),
2930 &data
->args
.seq_args
,
2934 rpc_call_start(task
);
2937 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2939 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2941 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2943 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2945 update_changeattr(dir
, &res
->cinfo
);
2949 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2951 struct nfs_server
*server
= NFS_SERVER(dir
);
2952 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2953 struct nfs_renameres
*res
= msg
->rpc_resp
;
2955 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2956 res
->server
= server
;
2957 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
2960 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
2962 if (nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
2963 &data
->args
.seq_args
,
2967 rpc_call_start(task
);
2970 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2971 struct inode
*new_dir
)
2973 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2975 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2977 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2980 update_changeattr(old_dir
, &res
->old_cinfo
);
2981 update_changeattr(new_dir
, &res
->new_cinfo
);
2985 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2986 struct inode
*new_dir
, struct qstr
*new_name
)
2988 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2989 struct nfs_renameargs arg
= {
2990 .old_dir
= NFS_FH(old_dir
),
2991 .new_dir
= NFS_FH(new_dir
),
2992 .old_name
= old_name
,
2993 .new_name
= new_name
,
2995 struct nfs_renameres res
= {
2998 struct rpc_message msg
= {
2999 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3003 int status
= -ENOMEM
;
3005 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3007 update_changeattr(old_dir
, &res
.old_cinfo
);
3008 update_changeattr(new_dir
, &res
.new_cinfo
);
3013 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3014 struct inode
*new_dir
, struct qstr
*new_name
)
3016 struct nfs4_exception exception
= { };
3019 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3020 _nfs4_proc_rename(old_dir
, old_name
,
3023 } while (exception
.retry
);
3027 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3029 struct nfs_server
*server
= NFS_SERVER(inode
);
3030 struct nfs4_link_arg arg
= {
3031 .fh
= NFS_FH(inode
),
3032 .dir_fh
= NFS_FH(dir
),
3034 .bitmask
= server
->attr_bitmask
,
3036 struct nfs4_link_res res
= {
3039 struct rpc_message msg
= {
3040 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3044 int status
= -ENOMEM
;
3046 res
.fattr
= nfs_alloc_fattr();
3047 if (res
.fattr
== NULL
)
3050 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3052 update_changeattr(dir
, &res
.cinfo
);
3053 nfs_post_op_update_inode(inode
, res
.fattr
);
3056 nfs_free_fattr(res
.fattr
);
3060 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3062 struct nfs4_exception exception
= { };
3065 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3066 _nfs4_proc_link(inode
, dir
, name
),
3068 } while (exception
.retry
);
3072 struct nfs4_createdata
{
3073 struct rpc_message msg
;
3074 struct nfs4_create_arg arg
;
3075 struct nfs4_create_res res
;
3077 struct nfs_fattr fattr
;
3080 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3081 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3083 struct nfs4_createdata
*data
;
3085 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3087 struct nfs_server
*server
= NFS_SERVER(dir
);
3089 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3090 data
->msg
.rpc_argp
= &data
->arg
;
3091 data
->msg
.rpc_resp
= &data
->res
;
3092 data
->arg
.dir_fh
= NFS_FH(dir
);
3093 data
->arg
.server
= server
;
3094 data
->arg
.name
= name
;
3095 data
->arg
.attrs
= sattr
;
3096 data
->arg
.ftype
= ftype
;
3097 data
->arg
.bitmask
= server
->attr_bitmask
;
3098 data
->res
.server
= server
;
3099 data
->res
.fh
= &data
->fh
;
3100 data
->res
.fattr
= &data
->fattr
;
3101 nfs_fattr_init(data
->res
.fattr
);
3106 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3108 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3109 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3111 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3112 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3117 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3122 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3123 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3125 struct nfs4_createdata
*data
;
3126 int status
= -ENAMETOOLONG
;
3128 if (len
> NFS4_MAXPATHLEN
)
3132 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3136 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3137 data
->arg
.u
.symlink
.pages
= &page
;
3138 data
->arg
.u
.symlink
.len
= len
;
3140 status
= nfs4_do_create(dir
, dentry
, data
);
3142 nfs4_free_createdata(data
);
3147 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3148 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3150 struct nfs4_exception exception
= { };
3153 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3154 _nfs4_proc_symlink(dir
, dentry
, page
,
3157 } while (exception
.retry
);
3161 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3162 struct iattr
*sattr
)
3164 struct nfs4_createdata
*data
;
3165 int status
= -ENOMEM
;
3167 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3171 status
= nfs4_do_create(dir
, dentry
, data
);
3173 nfs4_free_createdata(data
);
3178 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3179 struct iattr
*sattr
)
3181 struct nfs4_exception exception
= { };
3184 sattr
->ia_mode
&= ~current_umask();
3186 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3187 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3189 } while (exception
.retry
);
3193 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3194 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3196 struct inode
*dir
= dentry
->d_inode
;
3197 struct nfs4_readdir_arg args
= {
3202 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3205 struct nfs4_readdir_res res
;
3206 struct rpc_message msg
= {
3207 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3214 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3215 dentry
->d_parent
->d_name
.name
,
3216 dentry
->d_name
.name
,
3217 (unsigned long long)cookie
);
3218 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
3219 res
.pgbase
= args
.pgbase
;
3220 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3222 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3223 status
+= args
.pgbase
;
3226 nfs_invalidate_atime(dir
);
3228 dprintk("%s: returns %d\n", __func__
, status
);
3232 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3233 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3235 struct nfs4_exception exception
= { };
3238 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3239 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3240 pages
, count
, plus
),
3242 } while (exception
.retry
);
3246 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3247 struct iattr
*sattr
, dev_t rdev
)
3249 struct nfs4_createdata
*data
;
3250 int mode
= sattr
->ia_mode
;
3251 int status
= -ENOMEM
;
3253 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
3254 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
3256 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3261 data
->arg
.ftype
= NF4FIFO
;
3262 else if (S_ISBLK(mode
)) {
3263 data
->arg
.ftype
= NF4BLK
;
3264 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3265 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3267 else if (S_ISCHR(mode
)) {
3268 data
->arg
.ftype
= NF4CHR
;
3269 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3270 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3273 status
= nfs4_do_create(dir
, dentry
, data
);
3275 nfs4_free_createdata(data
);
3280 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3281 struct iattr
*sattr
, dev_t rdev
)
3283 struct nfs4_exception exception
= { };
3286 sattr
->ia_mode
&= ~current_umask();
3288 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3289 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3291 } while (exception
.retry
);
3295 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3296 struct nfs_fsstat
*fsstat
)
3298 struct nfs4_statfs_arg args
= {
3300 .bitmask
= server
->attr_bitmask
,
3302 struct nfs4_statfs_res res
= {
3305 struct rpc_message msg
= {
3306 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3311 nfs_fattr_init(fsstat
->fattr
);
3312 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3315 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3317 struct nfs4_exception exception
= { };
3320 err
= nfs4_handle_exception(server
,
3321 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3323 } while (exception
.retry
);
3327 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3328 struct nfs_fsinfo
*fsinfo
)
3330 struct nfs4_fsinfo_arg args
= {
3332 .bitmask
= server
->attr_bitmask
,
3334 struct nfs4_fsinfo_res res
= {
3337 struct rpc_message msg
= {
3338 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3343 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3346 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3348 struct nfs4_exception exception
= { };
3352 err
= nfs4_handle_exception(server
,
3353 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3355 } while (exception
.retry
);
3359 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3363 nfs_fattr_init(fsinfo
->fattr
);
3364 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3366 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3371 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3372 struct nfs_pathconf
*pathconf
)
3374 struct nfs4_pathconf_arg args
= {
3376 .bitmask
= server
->attr_bitmask
,
3378 struct nfs4_pathconf_res res
= {
3379 .pathconf
= pathconf
,
3381 struct rpc_message msg
= {
3382 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3387 /* None of the pathconf attributes are mandatory to implement */
3388 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3389 memset(pathconf
, 0, sizeof(*pathconf
));
3393 nfs_fattr_init(pathconf
->fattr
);
3394 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3397 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3398 struct nfs_pathconf
*pathconf
)
3400 struct nfs4_exception exception
= { };
3404 err
= nfs4_handle_exception(server
,
3405 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3407 } while (exception
.retry
);
3411 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3413 nfs_invalidate_atime(data
->header
->inode
);
3416 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3418 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3420 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3421 rpc_restart_call_prepare(task
);
3425 __nfs4_read_done_cb(data
);
3426 if (task
->tk_status
> 0)
3427 renew_lease(server
, data
->timestamp
);
3431 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3434 dprintk("--> %s\n", __func__
);
3436 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3439 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3440 nfs4_read_done_cb(task
, data
);
3443 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3445 data
->timestamp
= jiffies
;
3446 data
->read_done_cb
= nfs4_read_done_cb
;
3447 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3448 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3451 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3453 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3454 &data
->args
.seq_args
,
3458 rpc_call_start(task
);
3461 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3463 struct inode
*inode
= data
->header
->inode
;
3465 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3466 rpc_restart_call_prepare(task
);
3469 if (task
->tk_status
>= 0) {
3470 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3471 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3476 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3478 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3480 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3481 nfs4_write_done_cb(task
, data
);
3485 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3487 const struct nfs_pgio_header
*hdr
= data
->header
;
3489 /* Don't request attributes for pNFS or O_DIRECT writes */
3490 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3492 /* Otherwise, request attributes if and only if we don't hold
3495 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3498 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3500 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3502 if (!nfs4_write_need_cache_consistency_data(data
)) {
3503 data
->args
.bitmask
= NULL
;
3504 data
->res
.fattr
= NULL
;
3506 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3508 if (!data
->write_done_cb
)
3509 data
->write_done_cb
= nfs4_write_done_cb
;
3510 data
->res
.server
= server
;
3511 data
->timestamp
= jiffies
;
3513 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3514 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3517 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3519 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3520 &data
->args
.seq_args
,
3524 rpc_call_start(task
);
3527 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3529 if (nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3530 &data
->args
.seq_args
,
3534 rpc_call_start(task
);
3537 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3539 struct inode
*inode
= data
->inode
;
3541 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3542 rpc_restart_call_prepare(task
);
3548 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3550 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3552 return data
->commit_done_cb(task
, data
);
3555 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3557 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3559 if (data
->commit_done_cb
== NULL
)
3560 data
->commit_done_cb
= nfs4_commit_done_cb
;
3561 data
->res
.server
= server
;
3562 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3563 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3566 struct nfs4_renewdata
{
3567 struct nfs_client
*client
;
3568 unsigned long timestamp
;
3572 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3573 * standalone procedure for queueing an asynchronous RENEW.
3575 static void nfs4_renew_release(void *calldata
)
3577 struct nfs4_renewdata
*data
= calldata
;
3578 struct nfs_client
*clp
= data
->client
;
3580 if (atomic_read(&clp
->cl_count
) > 1)
3581 nfs4_schedule_state_renewal(clp
);
3582 nfs_put_client(clp
);
3586 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3588 struct nfs4_renewdata
*data
= calldata
;
3589 struct nfs_client
*clp
= data
->client
;
3590 unsigned long timestamp
= data
->timestamp
;
3592 if (task
->tk_status
< 0) {
3593 /* Unless we're shutting down, schedule state recovery! */
3594 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3596 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3597 nfs4_schedule_lease_recovery(clp
);
3600 nfs4_schedule_path_down_recovery(clp
);
3602 do_renew_lease(clp
, timestamp
);
3605 static const struct rpc_call_ops nfs4_renew_ops
= {
3606 .rpc_call_done
= nfs4_renew_done
,
3607 .rpc_release
= nfs4_renew_release
,
3610 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3612 struct rpc_message msg
= {
3613 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3617 struct nfs4_renewdata
*data
;
3619 if (renew_flags
== 0)
3621 if (!atomic_inc_not_zero(&clp
->cl_count
))
3623 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3627 data
->timestamp
= jiffies
;
3628 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3629 &nfs4_renew_ops
, data
);
3632 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3634 struct rpc_message msg
= {
3635 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3639 unsigned long now
= jiffies
;
3642 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3645 do_renew_lease(clp
, now
);
3649 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3651 return (server
->caps
& NFS_CAP_ACLS
)
3652 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3653 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3656 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3657 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3660 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3662 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3663 struct page
**pages
, unsigned int *pgbase
)
3665 struct page
*newpage
, **spages
;
3671 len
= min_t(size_t, PAGE_CACHE_SIZE
, buflen
);
3672 newpage
= alloc_page(GFP_KERNEL
);
3674 if (newpage
== NULL
)
3676 memcpy(page_address(newpage
), buf
, len
);
3681 } while (buflen
!= 0);
3687 __free_page(spages
[rc
-1]);
3691 struct nfs4_cached_acl
{
3697 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3699 struct nfs_inode
*nfsi
= NFS_I(inode
);
3701 spin_lock(&inode
->i_lock
);
3702 kfree(nfsi
->nfs4_acl
);
3703 nfsi
->nfs4_acl
= acl
;
3704 spin_unlock(&inode
->i_lock
);
3707 static void nfs4_zap_acl_attr(struct inode
*inode
)
3709 nfs4_set_cached_acl(inode
, NULL
);
3712 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3714 struct nfs_inode
*nfsi
= NFS_I(inode
);
3715 struct nfs4_cached_acl
*acl
;
3718 spin_lock(&inode
->i_lock
);
3719 acl
= nfsi
->nfs4_acl
;
3722 if (buf
== NULL
) /* user is just asking for length */
3724 if (acl
->cached
== 0)
3726 ret
= -ERANGE
; /* see getxattr(2) man page */
3727 if (acl
->len
> buflen
)
3729 memcpy(buf
, acl
->data
, acl
->len
);
3733 spin_unlock(&inode
->i_lock
);
3737 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3739 struct nfs4_cached_acl
*acl
;
3741 if (pages
&& acl_len
<= PAGE_SIZE
) {
3742 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3746 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3748 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3755 nfs4_set_cached_acl(inode
, acl
);
3759 * The getxattr API returns the required buffer length when called with a
3760 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3761 * the required buf. On a NULL buf, we send a page of data to the server
3762 * guessing that the ACL request can be serviced by a page. If so, we cache
3763 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3764 * the cache. If not so, we throw away the page, and cache the required
3765 * length. The next getxattr call will then produce another round trip to
3766 * the server, this time with the input buf of the required size.
3768 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3770 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3771 struct nfs_getaclargs args
= {
3772 .fh
= NFS_FH(inode
),
3776 struct nfs_getaclres res
= {
3779 struct rpc_message msg
= {
3780 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3784 int ret
= -ENOMEM
, npages
, i
;
3787 npages
= (buflen
+ PAGE_SIZE
- 1) >> PAGE_SHIFT
;
3788 /* As long as we're doing a round trip to the server anyway,
3789 * let's be prepared for a page of acl data. */
3793 /* Add an extra page to handle the bitmap returned */
3796 for (i
= 0; i
< npages
; i
++) {
3797 pages
[i
] = alloc_page(GFP_KERNEL
);
3802 /* for decoding across pages */
3803 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3804 if (!res
.acl_scratch
)
3807 args
.acl_len
= npages
* PAGE_SIZE
;
3808 args
.acl_pgbase
= 0;
3810 /* Let decode_getfacl know not to fail if the ACL data is larger than
3811 * the page we send as a guess */
3813 res
.acl_flags
|= NFS4_ACL_LEN_REQUEST
;
3815 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3816 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3817 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3818 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3822 acl_len
= res
.acl_len
- res
.acl_data_offset
;
3823 if (acl_len
> args
.acl_len
)
3824 nfs4_write_cached_acl(inode
, NULL
, 0, acl_len
);
3826 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
,
3830 if (acl_len
> buflen
)
3832 _copy_from_pages(buf
, pages
, res
.acl_data_offset
,
3837 for (i
= 0; i
< npages
; i
++)
3839 __free_page(pages
[i
]);
3840 if (res
.acl_scratch
)
3841 __free_page(res
.acl_scratch
);
3845 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3847 struct nfs4_exception exception
= { };
3850 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3853 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3854 } while (exception
.retry
);
3858 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3860 struct nfs_server
*server
= NFS_SERVER(inode
);
3863 if (!nfs4_server_supports_acls(server
))
3865 ret
= nfs_revalidate_inode(server
, inode
);
3868 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3869 nfs_zap_acl_cache(inode
);
3870 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3872 /* -ENOENT is returned if there is no ACL or if there is an ACL
3873 * but no cached acl data, just the acl length */
3875 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3878 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3880 struct nfs_server
*server
= NFS_SERVER(inode
);
3881 struct page
*pages
[NFS4ACL_MAXPAGES
];
3882 struct nfs_setaclargs arg
= {
3883 .fh
= NFS_FH(inode
),
3887 struct nfs_setaclres res
;
3888 struct rpc_message msg
= {
3889 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3895 if (!nfs4_server_supports_acls(server
))
3897 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3900 nfs4_inode_return_delegation(inode
);
3901 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3904 * Free each page after tx, so the only ref left is
3905 * held by the network stack
3908 put_page(pages
[i
-1]);
3911 * Acl update can result in inode attribute update.
3912 * so mark the attribute cache invalid.
3914 spin_lock(&inode
->i_lock
);
3915 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3916 spin_unlock(&inode
->i_lock
);
3917 nfs_access_zap_cache(inode
);
3918 nfs_zap_acl_cache(inode
);
3922 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3924 struct nfs4_exception exception
= { };
3927 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3928 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3930 } while (exception
.retry
);
3935 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3937 struct nfs_client
*clp
= server
->nfs_client
;
3939 if (task
->tk_status
>= 0)
3941 switch(task
->tk_status
) {
3942 case -NFS4ERR_DELEG_REVOKED
:
3943 case -NFS4ERR_ADMIN_REVOKED
:
3944 case -NFS4ERR_BAD_STATEID
:
3947 nfs_remove_bad_delegation(state
->inode
);
3948 case -NFS4ERR_OPENMODE
:
3951 nfs4_schedule_stateid_recovery(server
, state
);
3952 goto wait_on_recovery
;
3953 case -NFS4ERR_EXPIRED
:
3955 nfs4_schedule_stateid_recovery(server
, state
);
3956 case -NFS4ERR_STALE_STATEID
:
3957 case -NFS4ERR_STALE_CLIENTID
:
3958 nfs4_schedule_lease_recovery(clp
);
3959 goto wait_on_recovery
;
3960 #if defined(CONFIG_NFS_V4_1)
3961 case -NFS4ERR_BADSESSION
:
3962 case -NFS4ERR_BADSLOT
:
3963 case -NFS4ERR_BAD_HIGH_SLOT
:
3964 case -NFS4ERR_DEADSESSION
:
3965 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3966 case -NFS4ERR_SEQ_FALSE_RETRY
:
3967 case -NFS4ERR_SEQ_MISORDERED
:
3968 dprintk("%s ERROR %d, Reset session\n", __func__
,
3970 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
3971 task
->tk_status
= 0;
3973 #endif /* CONFIG_NFS_V4_1 */
3974 case -NFS4ERR_DELAY
:
3975 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3976 case -NFS4ERR_GRACE
:
3978 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3979 task
->tk_status
= 0;
3981 case -NFS4ERR_RETRY_UNCACHED_REP
:
3982 case -NFS4ERR_OLD_STATEID
:
3983 task
->tk_status
= 0;
3986 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3989 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3990 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3991 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3992 task
->tk_status
= 0;
3996 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
3997 nfs4_verifier
*bootverf
)
4001 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4002 /* An impossible timestamp guarantees this value
4003 * will never match a generated boot time. */
4005 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4007 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4008 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4009 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4011 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4015 * nfs4_proc_setclientid - Negotiate client ID
4016 * @clp: state data structure
4017 * @program: RPC program for NFSv4 callback service
4018 * @port: IP port number for NFS4 callback service
4019 * @cred: RPC credential to use for this call
4020 * @res: where to place the result
4022 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4024 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4025 unsigned short port
, struct rpc_cred
*cred
,
4026 struct nfs4_setclientid_res
*res
)
4028 nfs4_verifier sc_verifier
;
4029 struct nfs4_setclientid setclientid
= {
4030 .sc_verifier
= &sc_verifier
,
4032 .sc_cb_ident
= clp
->cl_cb_ident
,
4034 struct rpc_message msg
= {
4035 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4036 .rpc_argp
= &setclientid
,
4042 /* nfs_client_id4 */
4043 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4045 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
4046 sizeof(setclientid
.sc_name
), "%s/%s %s",
4048 rpc_peeraddr2str(clp
->cl_rpcclient
,
4050 rpc_peeraddr2str(clp
->cl_rpcclient
,
4051 RPC_DISPLAY_PROTO
));
4053 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4054 sizeof(setclientid
.sc_netid
),
4055 rpc_peeraddr2str(clp
->cl_rpcclient
,
4056 RPC_DISPLAY_NETID
));
4058 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4059 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4060 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4062 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4063 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4064 setclientid
.sc_name_len
, setclientid
.sc_name
);
4065 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4066 dprintk("NFS reply setclientid: %d\n", status
);
4071 * nfs4_proc_setclientid_confirm - Confirm client ID
4072 * @clp: state data structure
4073 * @res: result of a previous SETCLIENTID
4074 * @cred: RPC credential to use for this call
4076 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4078 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4079 struct nfs4_setclientid_res
*arg
,
4080 struct rpc_cred
*cred
)
4082 struct nfs_fsinfo fsinfo
;
4083 struct rpc_message msg
= {
4084 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4086 .rpc_resp
= &fsinfo
,
4092 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4093 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4096 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4098 spin_lock(&clp
->cl_lock
);
4099 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4100 clp
->cl_last_renewal
= now
;
4101 spin_unlock(&clp
->cl_lock
);
4103 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4107 struct nfs4_delegreturndata
{
4108 struct nfs4_delegreturnargs args
;
4109 struct nfs4_delegreturnres res
;
4111 nfs4_stateid stateid
;
4112 unsigned long timestamp
;
4113 struct nfs_fattr fattr
;
4117 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4119 struct nfs4_delegreturndata
*data
= calldata
;
4121 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4124 switch (task
->tk_status
) {
4125 case -NFS4ERR_STALE_STATEID
:
4126 case -NFS4ERR_EXPIRED
:
4128 renew_lease(data
->res
.server
, data
->timestamp
);
4131 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4133 rpc_restart_call_prepare(task
);
4137 data
->rpc_status
= task
->tk_status
;
4140 static void nfs4_delegreturn_release(void *calldata
)
4145 #if defined(CONFIG_NFS_V4_1)
4146 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4148 struct nfs4_delegreturndata
*d_data
;
4150 d_data
= (struct nfs4_delegreturndata
*)data
;
4152 if (nfs4_setup_sequence(d_data
->res
.server
,
4153 &d_data
->args
.seq_args
,
4154 &d_data
->res
.seq_res
, task
))
4156 rpc_call_start(task
);
4158 #endif /* CONFIG_NFS_V4_1 */
4160 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4161 #if defined(CONFIG_NFS_V4_1)
4162 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4163 #endif /* CONFIG_NFS_V4_1 */
4164 .rpc_call_done
= nfs4_delegreturn_done
,
4165 .rpc_release
= nfs4_delegreturn_release
,
4168 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4170 struct nfs4_delegreturndata
*data
;
4171 struct nfs_server
*server
= NFS_SERVER(inode
);
4172 struct rpc_task
*task
;
4173 struct rpc_message msg
= {
4174 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4177 struct rpc_task_setup task_setup_data
= {
4178 .rpc_client
= server
->client
,
4179 .rpc_message
= &msg
,
4180 .callback_ops
= &nfs4_delegreturn_ops
,
4181 .flags
= RPC_TASK_ASYNC
,
4185 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4188 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4189 data
->args
.fhandle
= &data
->fh
;
4190 data
->args
.stateid
= &data
->stateid
;
4191 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4192 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4193 nfs4_stateid_copy(&data
->stateid
, stateid
);
4194 data
->res
.fattr
= &data
->fattr
;
4195 data
->res
.server
= server
;
4196 nfs_fattr_init(data
->res
.fattr
);
4197 data
->timestamp
= jiffies
;
4198 data
->rpc_status
= 0;
4200 task_setup_data
.callback_data
= data
;
4201 msg
.rpc_argp
= &data
->args
;
4202 msg
.rpc_resp
= &data
->res
;
4203 task
= rpc_run_task(&task_setup_data
);
4205 return PTR_ERR(task
);
4208 status
= nfs4_wait_for_completion_rpc_task(task
);
4211 status
= data
->rpc_status
;
4213 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4215 nfs_refresh_inode(inode
, &data
->fattr
);
4221 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4223 struct nfs_server
*server
= NFS_SERVER(inode
);
4224 struct nfs4_exception exception
= { };
4227 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4229 case -NFS4ERR_STALE_STATEID
:
4230 case -NFS4ERR_EXPIRED
:
4234 err
= nfs4_handle_exception(server
, err
, &exception
);
4235 } while (exception
.retry
);
4239 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4240 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4243 * sleep, with exponential backoff, and retry the LOCK operation.
4245 static unsigned long
4246 nfs4_set_lock_task_retry(unsigned long timeout
)
4248 freezable_schedule_timeout_killable(timeout
);
4250 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4251 return NFS4_LOCK_MAXTIMEOUT
;
4255 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4257 struct inode
*inode
= state
->inode
;
4258 struct nfs_server
*server
= NFS_SERVER(inode
);
4259 struct nfs_client
*clp
= server
->nfs_client
;
4260 struct nfs_lockt_args arg
= {
4261 .fh
= NFS_FH(inode
),
4264 struct nfs_lockt_res res
= {
4267 struct rpc_message msg
= {
4268 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4271 .rpc_cred
= state
->owner
->so_cred
,
4273 struct nfs4_lock_state
*lsp
;
4276 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4277 status
= nfs4_set_lock_state(state
, request
);
4280 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4281 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4282 arg
.lock_owner
.s_dev
= server
->s_dev
;
4283 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4286 request
->fl_type
= F_UNLCK
;
4288 case -NFS4ERR_DENIED
:
4291 request
->fl_ops
->fl_release_private(request
);
4296 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4298 struct nfs4_exception exception
= { };
4302 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4303 _nfs4_proc_getlk(state
, cmd
, request
),
4305 } while (exception
.retry
);
4309 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4312 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4314 res
= posix_lock_file_wait(file
, fl
);
4317 res
= flock_lock_file_wait(file
, fl
);
4325 struct nfs4_unlockdata
{
4326 struct nfs_locku_args arg
;
4327 struct nfs_locku_res res
;
4328 struct nfs4_lock_state
*lsp
;
4329 struct nfs_open_context
*ctx
;
4330 struct file_lock fl
;
4331 const struct nfs_server
*server
;
4332 unsigned long timestamp
;
4335 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4336 struct nfs_open_context
*ctx
,
4337 struct nfs4_lock_state
*lsp
,
4338 struct nfs_seqid
*seqid
)
4340 struct nfs4_unlockdata
*p
;
4341 struct inode
*inode
= lsp
->ls_state
->inode
;
4343 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4346 p
->arg
.fh
= NFS_FH(inode
);
4348 p
->arg
.seqid
= seqid
;
4349 p
->res
.seqid
= seqid
;
4350 p
->arg
.stateid
= &lsp
->ls_stateid
;
4352 atomic_inc(&lsp
->ls_count
);
4353 /* Ensure we don't close file until we're done freeing locks! */
4354 p
->ctx
= get_nfs_open_context(ctx
);
4355 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4356 p
->server
= NFS_SERVER(inode
);
4360 static void nfs4_locku_release_calldata(void *data
)
4362 struct nfs4_unlockdata
*calldata
= data
;
4363 nfs_free_seqid(calldata
->arg
.seqid
);
4364 nfs4_put_lock_state(calldata
->lsp
);
4365 put_nfs_open_context(calldata
->ctx
);
4369 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4371 struct nfs4_unlockdata
*calldata
= data
;
4373 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4375 switch (task
->tk_status
) {
4377 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4378 &calldata
->res
.stateid
);
4379 renew_lease(calldata
->server
, calldata
->timestamp
);
4381 case -NFS4ERR_BAD_STATEID
:
4382 case -NFS4ERR_OLD_STATEID
:
4383 case -NFS4ERR_STALE_STATEID
:
4384 case -NFS4ERR_EXPIRED
:
4387 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4388 rpc_restart_call_prepare(task
);
4392 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4394 struct nfs4_unlockdata
*calldata
= data
;
4396 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4398 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
4399 /* Note: exit _without_ running nfs4_locku_done */
4400 task
->tk_action
= NULL
;
4403 calldata
->timestamp
= jiffies
;
4404 if (nfs4_setup_sequence(calldata
->server
,
4405 &calldata
->arg
.seq_args
,
4406 &calldata
->res
.seq_res
, task
))
4408 rpc_call_start(task
);
4411 static const struct rpc_call_ops nfs4_locku_ops
= {
4412 .rpc_call_prepare
= nfs4_locku_prepare
,
4413 .rpc_call_done
= nfs4_locku_done
,
4414 .rpc_release
= nfs4_locku_release_calldata
,
4417 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4418 struct nfs_open_context
*ctx
,
4419 struct nfs4_lock_state
*lsp
,
4420 struct nfs_seqid
*seqid
)
4422 struct nfs4_unlockdata
*data
;
4423 struct rpc_message msg
= {
4424 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4425 .rpc_cred
= ctx
->cred
,
4427 struct rpc_task_setup task_setup_data
= {
4428 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4429 .rpc_message
= &msg
,
4430 .callback_ops
= &nfs4_locku_ops
,
4431 .workqueue
= nfsiod_workqueue
,
4432 .flags
= RPC_TASK_ASYNC
,
4435 /* Ensure this is an unlock - when canceling a lock, the
4436 * canceled lock is passed in, and it won't be an unlock.
4438 fl
->fl_type
= F_UNLCK
;
4440 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4442 nfs_free_seqid(seqid
);
4443 return ERR_PTR(-ENOMEM
);
4446 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4447 msg
.rpc_argp
= &data
->arg
;
4448 msg
.rpc_resp
= &data
->res
;
4449 task_setup_data
.callback_data
= data
;
4450 return rpc_run_task(&task_setup_data
);
4453 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4455 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4456 struct nfs_seqid
*seqid
;
4457 struct nfs4_lock_state
*lsp
;
4458 struct rpc_task
*task
;
4460 unsigned char fl_flags
= request
->fl_flags
;
4462 status
= nfs4_set_lock_state(state
, request
);
4463 /* Unlock _before_ we do the RPC call */
4464 request
->fl_flags
|= FL_EXISTS
;
4465 down_read(&nfsi
->rwsem
);
4466 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4467 up_read(&nfsi
->rwsem
);
4470 up_read(&nfsi
->rwsem
);
4473 /* Is this a delegated lock? */
4474 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4476 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4477 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4481 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4482 status
= PTR_ERR(task
);
4485 status
= nfs4_wait_for_completion_rpc_task(task
);
4488 request
->fl_flags
= fl_flags
;
4492 struct nfs4_lockdata
{
4493 struct nfs_lock_args arg
;
4494 struct nfs_lock_res res
;
4495 struct nfs4_lock_state
*lsp
;
4496 struct nfs_open_context
*ctx
;
4497 struct file_lock fl
;
4498 unsigned long timestamp
;
4501 struct nfs_server
*server
;
4504 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4505 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4508 struct nfs4_lockdata
*p
;
4509 struct inode
*inode
= lsp
->ls_state
->inode
;
4510 struct nfs_server
*server
= NFS_SERVER(inode
);
4512 p
= kzalloc(sizeof(*p
), gfp_mask
);
4516 p
->arg
.fh
= NFS_FH(inode
);
4518 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4519 if (p
->arg
.open_seqid
== NULL
)
4521 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4522 if (p
->arg
.lock_seqid
== NULL
)
4523 goto out_free_seqid
;
4524 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4525 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4526 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4527 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4528 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4531 atomic_inc(&lsp
->ls_count
);
4532 p
->ctx
= get_nfs_open_context(ctx
);
4533 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4536 nfs_free_seqid(p
->arg
.open_seqid
);
4542 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4544 struct nfs4_lockdata
*data
= calldata
;
4545 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4547 dprintk("%s: begin!\n", __func__
);
4548 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4550 /* Do we need to do an open_to_lock_owner? */
4551 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4552 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4554 data
->arg
.open_stateid
= &state
->stateid
;
4555 data
->arg
.new_lock_owner
= 1;
4556 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4558 data
->arg
.new_lock_owner
= 0;
4559 data
->timestamp
= jiffies
;
4560 if (nfs4_setup_sequence(data
->server
,
4561 &data
->arg
.seq_args
,
4562 &data
->res
.seq_res
, task
))
4564 rpc_call_start(task
);
4565 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4568 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4570 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4571 nfs4_lock_prepare(task
, calldata
);
4574 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4576 struct nfs4_lockdata
*data
= calldata
;
4578 dprintk("%s: begin!\n", __func__
);
4580 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4583 data
->rpc_status
= task
->tk_status
;
4584 if (data
->arg
.new_lock_owner
!= 0) {
4585 if (data
->rpc_status
== 0)
4586 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4590 if (data
->rpc_status
== 0) {
4591 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4592 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4593 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4596 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4599 static void nfs4_lock_release(void *calldata
)
4601 struct nfs4_lockdata
*data
= calldata
;
4603 dprintk("%s: begin!\n", __func__
);
4604 nfs_free_seqid(data
->arg
.open_seqid
);
4605 if (data
->cancelled
!= 0) {
4606 struct rpc_task
*task
;
4607 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4608 data
->arg
.lock_seqid
);
4610 rpc_put_task_async(task
);
4611 dprintk("%s: cancelling lock!\n", __func__
);
4613 nfs_free_seqid(data
->arg
.lock_seqid
);
4614 nfs4_put_lock_state(data
->lsp
);
4615 put_nfs_open_context(data
->ctx
);
4617 dprintk("%s: done!\n", __func__
);
4620 static const struct rpc_call_ops nfs4_lock_ops
= {
4621 .rpc_call_prepare
= nfs4_lock_prepare
,
4622 .rpc_call_done
= nfs4_lock_done
,
4623 .rpc_release
= nfs4_lock_release
,
4626 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4627 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4628 .rpc_call_done
= nfs4_lock_done
,
4629 .rpc_release
= nfs4_lock_release
,
4632 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4635 case -NFS4ERR_ADMIN_REVOKED
:
4636 case -NFS4ERR_BAD_STATEID
:
4637 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4638 if (new_lock_owner
!= 0 ||
4639 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4640 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4642 case -NFS4ERR_STALE_STATEID
:
4643 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4644 case -NFS4ERR_EXPIRED
:
4645 nfs4_schedule_lease_recovery(server
->nfs_client
);
4649 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4651 struct nfs4_lockdata
*data
;
4652 struct rpc_task
*task
;
4653 struct rpc_message msg
= {
4654 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4655 .rpc_cred
= state
->owner
->so_cred
,
4657 struct rpc_task_setup task_setup_data
= {
4658 .rpc_client
= NFS_CLIENT(state
->inode
),
4659 .rpc_message
= &msg
,
4660 .callback_ops
= &nfs4_lock_ops
,
4661 .workqueue
= nfsiod_workqueue
,
4662 .flags
= RPC_TASK_ASYNC
,
4666 dprintk("%s: begin!\n", __func__
);
4667 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4668 fl
->fl_u
.nfs4_fl
.owner
,
4669 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4673 data
->arg
.block
= 1;
4674 if (recovery_type
> NFS_LOCK_NEW
) {
4675 if (recovery_type
== NFS_LOCK_RECLAIM
)
4676 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4677 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4679 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4680 msg
.rpc_argp
= &data
->arg
;
4681 msg
.rpc_resp
= &data
->res
;
4682 task_setup_data
.callback_data
= data
;
4683 task
= rpc_run_task(&task_setup_data
);
4685 return PTR_ERR(task
);
4686 ret
= nfs4_wait_for_completion_rpc_task(task
);
4688 ret
= data
->rpc_status
;
4690 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4691 data
->arg
.new_lock_owner
, ret
);
4693 data
->cancelled
= 1;
4695 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4699 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4701 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4702 struct nfs4_exception exception
= {
4703 .inode
= state
->inode
,
4708 /* Cache the lock if possible... */
4709 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4711 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4712 if (err
!= -NFS4ERR_DELAY
)
4714 nfs4_handle_exception(server
, err
, &exception
);
4715 } while (exception
.retry
);
4719 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4721 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4722 struct nfs4_exception exception
= {
4723 .inode
= state
->inode
,
4727 err
= nfs4_set_lock_state(state
, request
);
4731 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4733 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4737 case -NFS4ERR_GRACE
:
4738 case -NFS4ERR_DELAY
:
4739 nfs4_handle_exception(server
, err
, &exception
);
4742 } while (exception
.retry
);
4747 #if defined(CONFIG_NFS_V4_1)
4749 * nfs41_check_expired_locks - possibly free a lock stateid
4751 * @state: NFSv4 state for an inode
4753 * Returns NFS_OK if recovery for this stateid is now finished.
4754 * Otherwise a negative NFS4ERR value is returned.
4756 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4758 int status
, ret
= -NFS4ERR_BAD_STATEID
;
4759 struct nfs4_lock_state
*lsp
;
4760 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4762 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4763 if (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) {
4764 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4765 if (status
!= NFS_OK
) {
4766 /* Free the stateid unless the server
4767 * informs us the stateid is unrecognized. */
4768 if (status
!= -NFS4ERR_BAD_STATEID
)
4769 nfs41_free_stateid(server
,
4771 lsp
->ls_flags
&= ~NFS_LOCK_INITIALIZED
;
4780 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4782 int status
= NFS_OK
;
4784 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4785 status
= nfs41_check_expired_locks(state
);
4786 if (status
!= NFS_OK
)
4787 status
= nfs4_lock_expired(state
, request
);
4792 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4794 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4795 unsigned char fl_flags
= request
->fl_flags
;
4796 int status
= -ENOLCK
;
4798 if ((fl_flags
& FL_POSIX
) &&
4799 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4801 /* Is this a delegated open? */
4802 status
= nfs4_set_lock_state(state
, request
);
4805 request
->fl_flags
|= FL_ACCESS
;
4806 status
= do_vfs_lock(request
->fl_file
, request
);
4809 down_read(&nfsi
->rwsem
);
4810 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4811 /* Yes: cache locks! */
4812 /* ...but avoid races with delegation recall... */
4813 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4814 status
= do_vfs_lock(request
->fl_file
, request
);
4817 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4820 /* Note: we always want to sleep here! */
4821 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4822 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4823 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4824 "manager!\n", __func__
);
4826 up_read(&nfsi
->rwsem
);
4828 request
->fl_flags
= fl_flags
;
4832 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4834 struct nfs4_exception exception
= {
4836 .inode
= state
->inode
,
4841 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4842 if (err
== -NFS4ERR_DENIED
)
4844 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4846 } while (exception
.retry
);
4851 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4853 struct nfs_open_context
*ctx
;
4854 struct nfs4_state
*state
;
4855 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4858 /* verify open state */
4859 ctx
= nfs_file_open_context(filp
);
4862 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4865 if (IS_GETLK(cmd
)) {
4867 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4871 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4874 if (request
->fl_type
== F_UNLCK
) {
4876 return nfs4_proc_unlck(state
, cmd
, request
);
4883 * Don't rely on the VFS having checked the file open mode,
4884 * since it won't do this for flock() locks.
4886 switch (request
->fl_type
) {
4888 if (!(filp
->f_mode
& FMODE_READ
))
4892 if (!(filp
->f_mode
& FMODE_WRITE
))
4897 status
= nfs4_proc_setlk(state
, cmd
, request
);
4898 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4900 timeout
= nfs4_set_lock_task_retry(timeout
);
4901 status
= -ERESTARTSYS
;
4904 } while(status
< 0);
4908 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4910 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4911 struct nfs4_exception exception
= { };
4914 err
= nfs4_set_lock_state(state
, fl
);
4918 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4921 printk(KERN_ERR
"NFS: %s: unhandled error "
4922 "%d.\n", __func__
, err
);
4926 case -NFS4ERR_EXPIRED
:
4927 nfs4_schedule_stateid_recovery(server
, state
);
4928 case -NFS4ERR_STALE_CLIENTID
:
4929 case -NFS4ERR_STALE_STATEID
:
4930 nfs4_schedule_lease_recovery(server
->nfs_client
);
4932 case -NFS4ERR_BADSESSION
:
4933 case -NFS4ERR_BADSLOT
:
4934 case -NFS4ERR_BAD_HIGH_SLOT
:
4935 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4936 case -NFS4ERR_DEADSESSION
:
4937 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
4941 * The show must go on: exit, but mark the
4942 * stateid as needing recovery.
4944 case -NFS4ERR_DELEG_REVOKED
:
4945 case -NFS4ERR_ADMIN_REVOKED
:
4946 case -NFS4ERR_BAD_STATEID
:
4947 case -NFS4ERR_OPENMODE
:
4948 nfs4_schedule_stateid_recovery(server
, state
);
4953 * User RPCSEC_GSS context has expired.
4954 * We cannot recover this stateid now, so
4955 * skip it and allow recovery thread to
4961 case -NFS4ERR_DENIED
:
4962 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4965 case -NFS4ERR_DELAY
:
4968 err
= nfs4_handle_exception(server
, err
, &exception
);
4969 } while (exception
.retry
);
4974 struct nfs_release_lockowner_data
{
4975 struct nfs4_lock_state
*lsp
;
4976 struct nfs_server
*server
;
4977 struct nfs_release_lockowner_args args
;
4980 static void nfs4_release_lockowner_release(void *calldata
)
4982 struct nfs_release_lockowner_data
*data
= calldata
;
4983 nfs4_free_lock_state(data
->server
, data
->lsp
);
4987 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4988 .rpc_release
= nfs4_release_lockowner_release
,
4991 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
4993 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4994 struct nfs_release_lockowner_data
*data
;
4995 struct rpc_message msg
= {
4996 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4999 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5001 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5005 data
->server
= server
;
5006 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5007 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5008 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5009 msg
.rpc_argp
= &data
->args
;
5010 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5014 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5016 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5017 const void *buf
, size_t buflen
,
5018 int flags
, int type
)
5020 if (strcmp(key
, "") != 0)
5023 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5026 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5027 void *buf
, size_t buflen
, int type
)
5029 if (strcmp(key
, "") != 0)
5032 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5035 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5036 size_t list_len
, const char *name
,
5037 size_t name_len
, int type
)
5039 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5041 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5044 if (list
&& len
<= list_len
)
5045 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5050 * nfs_fhget will use either the mounted_on_fileid or the fileid
5052 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5054 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5055 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5056 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5057 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5060 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5061 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5062 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5066 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5067 const struct qstr
*name
,
5068 struct nfs4_fs_locations
*fs_locations
,
5071 struct nfs_server
*server
= NFS_SERVER(dir
);
5073 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5075 struct nfs4_fs_locations_arg args
= {
5076 .dir_fh
= NFS_FH(dir
),
5081 struct nfs4_fs_locations_res res
= {
5082 .fs_locations
= fs_locations
,
5084 struct rpc_message msg
= {
5085 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5091 dprintk("%s: start\n", __func__
);
5093 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5094 * is not supported */
5095 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5096 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5098 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5100 nfs_fattr_init(&fs_locations
->fattr
);
5101 fs_locations
->server
= server
;
5102 fs_locations
->nlocations
= 0;
5103 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5104 dprintk("%s: returned status = %d\n", __func__
, status
);
5108 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5109 const struct qstr
*name
,
5110 struct nfs4_fs_locations
*fs_locations
,
5113 struct nfs4_exception exception
= { };
5116 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5117 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5119 } while (exception
.retry
);
5123 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5126 struct nfs4_secinfo_arg args
= {
5127 .dir_fh
= NFS_FH(dir
),
5130 struct nfs4_secinfo_res res
= {
5133 struct rpc_message msg
= {
5134 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5139 dprintk("NFS call secinfo %s\n", name
->name
);
5140 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5141 dprintk("NFS reply secinfo: %d\n", status
);
5145 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5146 struct nfs4_secinfo_flavors
*flavors
)
5148 struct nfs4_exception exception
= { };
5151 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5152 _nfs4_proc_secinfo(dir
, name
, flavors
),
5154 } while (exception
.retry
);
5158 #ifdef CONFIG_NFS_V4_1
5160 * Check the exchange flags returned by the server for invalid flags, having
5161 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5164 static int nfs4_check_cl_exchange_flags(u32 flags
)
5166 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5168 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5169 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5171 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5175 return -NFS4ERR_INVAL
;
5179 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5180 struct nfs41_server_scope
*b
)
5182 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5183 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5190 * nfs4_proc_bind_conn_to_session()
5192 * The 4.1 client currently uses the same TCP connection for the
5193 * fore and backchannel.
5195 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5198 struct nfs41_bind_conn_to_session_res res
;
5199 struct rpc_message msg
= {
5201 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5207 dprintk("--> %s\n", __func__
);
5208 BUG_ON(clp
== NULL
);
5210 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5211 if (unlikely(res
.session
== NULL
)) {
5216 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5218 if (memcmp(res
.session
->sess_id
.data
,
5219 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5220 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5224 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5225 dprintk("NFS: %s: Unexpected direction from server\n",
5230 if (res
.use_conn_in_rdma_mode
) {
5231 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5240 dprintk("<-- %s status= %d\n", __func__
, status
);
5245 * nfs4_proc_exchange_id()
5247 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5249 * Since the clientid has expired, all compounds using sessions
5250 * associated with the stale clientid will be returning
5251 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5252 * be in some phase of session reset.
5254 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5256 nfs4_verifier verifier
;
5257 struct nfs41_exchange_id_args args
= {
5258 .verifier
= &verifier
,
5260 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5262 struct nfs41_exchange_id_res res
= {
5266 struct rpc_message msg
= {
5267 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5273 nfs4_init_boot_verifier(clp
, &verifier
);
5274 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
5277 clp
->cl_rpcclient
->cl_nodename
);
5278 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5279 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5280 args
.id_len
, args
.id
);
5282 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5284 if (unlikely(res
.server_owner
== NULL
)) {
5289 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5291 if (unlikely(res
.server_scope
== NULL
)) {
5293 goto out_server_owner
;
5296 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5297 if (unlikely(res
.impl_id
== NULL
)) {
5299 goto out_server_scope
;
5302 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5304 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5307 clp
->cl_clientid
= res
.clientid
;
5308 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5309 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5310 clp
->cl_seqid
= res
.seqid
;
5312 kfree(clp
->cl_serverowner
);
5313 clp
->cl_serverowner
= res
.server_owner
;
5314 res
.server_owner
= NULL
;
5316 /* use the most recent implementation id */
5317 kfree(clp
->cl_implid
);
5318 clp
->cl_implid
= res
.impl_id
;
5320 if (clp
->cl_serverscope
!= NULL
&&
5321 !nfs41_same_server_scope(clp
->cl_serverscope
,
5322 res
.server_scope
)) {
5323 dprintk("%s: server_scope mismatch detected\n",
5325 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5326 kfree(clp
->cl_serverscope
);
5327 clp
->cl_serverscope
= NULL
;
5330 if (clp
->cl_serverscope
== NULL
) {
5331 clp
->cl_serverscope
= res
.server_scope
;
5338 kfree(res
.server_owner
);
5340 kfree(res
.server_scope
);
5342 if (clp
->cl_implid
!= NULL
)
5343 dprintk("NFS reply exchange_id: Server Implementation ID: "
5344 "domain: %s, name: %s, date: %llu,%u\n",
5345 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5346 clp
->cl_implid
->date
.seconds
,
5347 clp
->cl_implid
->date
.nseconds
);
5348 dprintk("NFS reply exchange_id: %d\n", status
);
5352 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5353 struct rpc_cred
*cred
)
5355 struct rpc_message msg
= {
5356 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5362 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5364 dprintk("NFS: Got error %d from the server %s on "
5365 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5369 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5370 struct rpc_cred
*cred
)
5375 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5376 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5378 case -NFS4ERR_DELAY
:
5379 case -NFS4ERR_CLIENTID_BUSY
:
5389 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5391 struct rpc_cred
*cred
;
5394 if (clp
->cl_mvops
->minor_version
< 1)
5396 if (clp
->cl_exchange_flags
== 0)
5398 cred
= nfs4_get_exchange_id_cred(clp
);
5399 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5404 case -NFS4ERR_STALE_CLIENTID
:
5405 clp
->cl_exchange_flags
= 0;
5411 struct nfs4_get_lease_time_data
{
5412 struct nfs4_get_lease_time_args
*args
;
5413 struct nfs4_get_lease_time_res
*res
;
5414 struct nfs_client
*clp
;
5417 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5421 struct nfs4_get_lease_time_data
*data
=
5422 (struct nfs4_get_lease_time_data
*)calldata
;
5424 dprintk("--> %s\n", __func__
);
5425 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5426 /* just setup sequence, do not trigger session recovery
5427 since we're invoked within one */
5428 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
5429 &data
->args
->la_seq_args
,
5430 &data
->res
->lr_seq_res
, task
);
5432 BUG_ON(ret
== -EAGAIN
);
5433 rpc_call_start(task
);
5434 dprintk("<-- %s\n", __func__
);
5438 * Called from nfs4_state_manager thread for session setup, so don't recover
5439 * from sequence operation or clientid errors.
5441 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5443 struct nfs4_get_lease_time_data
*data
=
5444 (struct nfs4_get_lease_time_data
*)calldata
;
5446 dprintk("--> %s\n", __func__
);
5447 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5449 switch (task
->tk_status
) {
5450 case -NFS4ERR_DELAY
:
5451 case -NFS4ERR_GRACE
:
5452 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5453 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5454 task
->tk_status
= 0;
5456 case -NFS4ERR_RETRY_UNCACHED_REP
:
5457 rpc_restart_call_prepare(task
);
5460 dprintk("<-- %s\n", __func__
);
5463 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5464 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5465 .rpc_call_done
= nfs4_get_lease_time_done
,
5468 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5470 struct rpc_task
*task
;
5471 struct nfs4_get_lease_time_args args
;
5472 struct nfs4_get_lease_time_res res
= {
5473 .lr_fsinfo
= fsinfo
,
5475 struct nfs4_get_lease_time_data data
= {
5480 struct rpc_message msg
= {
5481 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5485 struct rpc_task_setup task_setup
= {
5486 .rpc_client
= clp
->cl_rpcclient
,
5487 .rpc_message
= &msg
,
5488 .callback_ops
= &nfs4_get_lease_time_ops
,
5489 .callback_data
= &data
,
5490 .flags
= RPC_TASK_TIMEOUT
,
5494 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5495 dprintk("--> %s\n", __func__
);
5496 task
= rpc_run_task(&task_setup
);
5499 status
= PTR_ERR(task
);
5501 status
= task
->tk_status
;
5504 dprintk("<-- %s return %d\n", __func__
, status
);
5509 static struct nfs4_slot
*nfs4_alloc_slots(u32 max_slots
, gfp_t gfp_flags
)
5511 return kcalloc(max_slots
, sizeof(struct nfs4_slot
), gfp_flags
);
5514 static void nfs4_add_and_init_slots(struct nfs4_slot_table
*tbl
,
5515 struct nfs4_slot
*new,
5519 struct nfs4_slot
*old
= NULL
;
5522 spin_lock(&tbl
->slot_tbl_lock
);
5526 tbl
->max_slots
= max_slots
;
5528 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
5529 for (i
= 0; i
< tbl
->max_slots
; i
++)
5530 tbl
->slots
[i
].seq_nr
= ivalue
;
5531 spin_unlock(&tbl
->slot_tbl_lock
);
5536 * (re)Initialise a slot table
5538 static int nfs4_realloc_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
5541 struct nfs4_slot
*new = NULL
;
5544 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
5545 max_reqs
, tbl
->max_slots
);
5547 /* Does the newly negotiated max_reqs match the existing slot table? */
5548 if (max_reqs
!= tbl
->max_slots
) {
5549 new = nfs4_alloc_slots(max_reqs
, GFP_NOFS
);
5555 nfs4_add_and_init_slots(tbl
, new, max_reqs
, ivalue
);
5556 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
5557 tbl
, tbl
->slots
, tbl
->max_slots
);
5559 dprintk("<-- %s: return %d\n", __func__
, ret
);
5563 /* Destroy the slot table */
5564 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
5566 if (session
->fc_slot_table
.slots
!= NULL
) {
5567 kfree(session
->fc_slot_table
.slots
);
5568 session
->fc_slot_table
.slots
= NULL
;
5570 if (session
->bc_slot_table
.slots
!= NULL
) {
5571 kfree(session
->bc_slot_table
.slots
);
5572 session
->bc_slot_table
.slots
= NULL
;
5578 * Initialize or reset the forechannel and backchannel tables
5580 static int nfs4_setup_session_slot_tables(struct nfs4_session
*ses
)
5582 struct nfs4_slot_table
*tbl
;
5585 dprintk("--> %s\n", __func__
);
5587 tbl
= &ses
->fc_slot_table
;
5588 status
= nfs4_realloc_slot_table(tbl
, ses
->fc_attrs
.max_reqs
, 1);
5589 if (status
) /* -ENOMEM */
5592 tbl
= &ses
->bc_slot_table
;
5593 status
= nfs4_realloc_slot_table(tbl
, ses
->bc_attrs
.max_reqs
, 0);
5594 if (status
&& tbl
->slots
== NULL
)
5595 /* Fore and back channel share a connection so get
5596 * both slot tables or neither */
5597 nfs4_destroy_slot_tables(ses
);
5601 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
5603 struct nfs4_session
*session
;
5604 struct nfs4_slot_table
*tbl
;
5606 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5610 tbl
= &session
->fc_slot_table
;
5611 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5612 spin_lock_init(&tbl
->slot_tbl_lock
);
5613 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
5614 init_completion(&tbl
->complete
);
5616 tbl
= &session
->bc_slot_table
;
5617 tbl
->highest_used_slotid
= NFS4_NO_SLOT
;
5618 spin_lock_init(&tbl
->slot_tbl_lock
);
5619 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
5620 init_completion(&tbl
->complete
);
5622 session
->session_state
= 1<<NFS4_SESSION_INITING
;
5628 void nfs4_destroy_session(struct nfs4_session
*session
)
5630 struct rpc_xprt
*xprt
;
5631 struct rpc_cred
*cred
;
5633 cred
= nfs4_get_exchange_id_cred(session
->clp
);
5634 nfs4_proc_destroy_session(session
, cred
);
5639 xprt
= rcu_dereference(session
->clp
->cl_rpcclient
->cl_xprt
);
5641 dprintk("%s Destroy backchannel for xprt %p\n",
5643 xprt_destroy_backchannel(xprt
, NFS41_BC_MIN_CALLBACKS
);
5644 nfs4_destroy_slot_tables(session
);
5649 * Initialize the values to be used by the client in CREATE_SESSION
5650 * If nfs4_init_session set the fore channel request and response sizes,
5653 * Set the back channel max_resp_sz_cached to zero to force the client to
5654 * always set csa_cachethis to FALSE because the current implementation
5655 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5657 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5659 struct nfs4_session
*session
= args
->client
->cl_session
;
5660 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
5661 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
5664 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5666 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5667 /* Fore channel attributes */
5668 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5669 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5670 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5671 args
->fc_attrs
.max_reqs
= max_session_slots
;
5673 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5674 "max_ops=%u max_reqs=%u\n",
5676 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5677 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5679 /* Back channel attributes */
5680 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5681 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5682 args
->bc_attrs
.max_resp_sz_cached
= 0;
5683 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5684 args
->bc_attrs
.max_reqs
= 1;
5686 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5687 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5689 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5690 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5691 args
->bc_attrs
.max_reqs
);
5694 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5696 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5697 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5699 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5702 * Our requested max_ops is the minimum we need; we're not
5703 * prepared to break up compounds into smaller pieces than that.
5704 * So, no point even trying to continue if the server won't
5707 if (rcvd
->max_ops
< sent
->max_ops
)
5709 if (rcvd
->max_reqs
== 0)
5711 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5712 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5716 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5718 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5719 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5721 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5723 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5725 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5727 /* These would render the backchannel useless: */
5728 if (rcvd
->max_ops
!= sent
->max_ops
)
5730 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5735 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5736 struct nfs4_session
*session
)
5740 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5743 return nfs4_verify_back_channel_attrs(args
, session
);
5746 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5747 struct rpc_cred
*cred
)
5749 struct nfs4_session
*session
= clp
->cl_session
;
5750 struct nfs41_create_session_args args
= {
5752 .cb_program
= NFS4_CALLBACK
,
5754 struct nfs41_create_session_res res
= {
5757 struct rpc_message msg
= {
5758 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5765 nfs4_init_channel_attrs(&args
);
5766 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5768 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5771 /* Verify the session's negotiated channel_attrs values */
5772 status
= nfs4_verify_channel_attrs(&args
, session
);
5774 /* Increment the clientid slot sequence id */
5782 * Issues a CREATE_SESSION operation to the server.
5783 * It is the responsibility of the caller to verify the session is
5784 * expired before calling this routine.
5786 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5790 struct nfs4_session
*session
= clp
->cl_session
;
5792 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5794 status
= _nfs4_proc_create_session(clp
, cred
);
5798 /* Init or reset the session slot tables */
5799 status
= nfs4_setup_session_slot_tables(session
);
5800 dprintk("slot table setup returned %d\n", status
);
5804 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5805 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5806 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5808 dprintk("<-- %s\n", __func__
);
5813 * Issue the over-the-wire RPC DESTROY_SESSION.
5814 * The caller must serialize access to this routine.
5816 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5817 struct rpc_cred
*cred
)
5819 struct rpc_message msg
= {
5820 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5821 .rpc_argp
= session
,
5826 dprintk("--> nfs4_proc_destroy_session\n");
5828 /* session is still being setup */
5829 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5832 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5835 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5836 "Session has been destroyed regardless...\n", status
);
5838 dprintk("<-- nfs4_proc_destroy_session\n");
5843 * With sessions, the client is not marked ready until after a
5844 * successful EXCHANGE_ID and CREATE_SESSION.
5846 * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate
5847 * other versions of NFS can be tried.
5849 static int nfs41_check_session_ready(struct nfs_client
*clp
)
5853 if (clp
->cl_cons_state
== NFS_CS_SESSION_INITING
) {
5854 ret
= nfs4_client_recover_expired_lease(clp
);
5858 if (clp
->cl_cons_state
< NFS_CS_READY
)
5859 return -EPROTONOSUPPORT
;
5864 int nfs4_init_session(struct nfs_server
*server
)
5866 struct nfs_client
*clp
= server
->nfs_client
;
5867 struct nfs4_session
*session
;
5868 unsigned int rsize
, wsize
;
5870 if (!nfs4_has_session(clp
))
5873 session
= clp
->cl_session
;
5874 spin_lock(&clp
->cl_lock
);
5875 if (test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
)) {
5877 rsize
= server
->rsize
;
5879 rsize
= NFS_MAX_FILE_IO_SIZE
;
5880 wsize
= server
->wsize
;
5882 wsize
= NFS_MAX_FILE_IO_SIZE
;
5884 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5885 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5887 spin_unlock(&clp
->cl_lock
);
5889 return nfs41_check_session_ready(clp
);
5892 int nfs4_init_ds_session(struct nfs_client
*clp
, unsigned long lease_time
)
5894 struct nfs4_session
*session
= clp
->cl_session
;
5897 spin_lock(&clp
->cl_lock
);
5898 if (test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
)) {
5900 * Do not set NFS_CS_CHECK_LEASE_TIME instead set the
5901 * DS lease to be equal to the MDS lease.
5903 clp
->cl_lease_time
= lease_time
;
5904 clp
->cl_last_renewal
= jiffies
;
5906 spin_unlock(&clp
->cl_lock
);
5908 ret
= nfs41_check_session_ready(clp
);
5911 /* Test for the DS role */
5912 if (!is_ds_client(clp
))
5916 EXPORT_SYMBOL_GPL(nfs4_init_ds_session
);
5920 * Renew the cl_session lease.
5922 struct nfs4_sequence_data
{
5923 struct nfs_client
*clp
;
5924 struct nfs4_sequence_args args
;
5925 struct nfs4_sequence_res res
;
5928 static void nfs41_sequence_release(void *data
)
5930 struct nfs4_sequence_data
*calldata
= data
;
5931 struct nfs_client
*clp
= calldata
->clp
;
5933 if (atomic_read(&clp
->cl_count
) > 1)
5934 nfs4_schedule_state_renewal(clp
);
5935 nfs_put_client(clp
);
5939 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5941 switch(task
->tk_status
) {
5942 case -NFS4ERR_DELAY
:
5943 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5946 nfs4_schedule_lease_recovery(clp
);
5951 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5953 struct nfs4_sequence_data
*calldata
= data
;
5954 struct nfs_client
*clp
= calldata
->clp
;
5956 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5959 if (task
->tk_status
< 0) {
5960 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5961 if (atomic_read(&clp
->cl_count
) == 1)
5964 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5965 rpc_restart_call_prepare(task
);
5969 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5971 dprintk("<-- %s\n", __func__
);
5974 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5976 struct nfs4_sequence_data
*calldata
= data
;
5977 struct nfs_client
*clp
= calldata
->clp
;
5978 struct nfs4_sequence_args
*args
;
5979 struct nfs4_sequence_res
*res
;
5981 args
= task
->tk_msg
.rpc_argp
;
5982 res
= task
->tk_msg
.rpc_resp
;
5984 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
))
5986 rpc_call_start(task
);
5989 static const struct rpc_call_ops nfs41_sequence_ops
= {
5990 .rpc_call_done
= nfs41_sequence_call_done
,
5991 .rpc_call_prepare
= nfs41_sequence_prepare
,
5992 .rpc_release
= nfs41_sequence_release
,
5995 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5997 struct nfs4_sequence_data
*calldata
;
5998 struct rpc_message msg
= {
5999 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6002 struct rpc_task_setup task_setup_data
= {
6003 .rpc_client
= clp
->cl_rpcclient
,
6004 .rpc_message
= &msg
,
6005 .callback_ops
= &nfs41_sequence_ops
,
6006 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
6009 if (!atomic_inc_not_zero(&clp
->cl_count
))
6010 return ERR_PTR(-EIO
);
6011 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6012 if (calldata
== NULL
) {
6013 nfs_put_client(clp
);
6014 return ERR_PTR(-ENOMEM
);
6016 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6017 msg
.rpc_argp
= &calldata
->args
;
6018 msg
.rpc_resp
= &calldata
->res
;
6019 calldata
->clp
= clp
;
6020 task_setup_data
.callback_data
= calldata
;
6022 return rpc_run_task(&task_setup_data
);
6025 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6027 struct rpc_task
*task
;
6030 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6032 task
= _nfs41_proc_sequence(clp
, cred
);
6034 ret
= PTR_ERR(task
);
6036 rpc_put_task_async(task
);
6037 dprintk("<-- %s status=%d\n", __func__
, ret
);
6041 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6043 struct rpc_task
*task
;
6046 task
= _nfs41_proc_sequence(clp
, cred
);
6048 ret
= PTR_ERR(task
);
6051 ret
= rpc_wait_for_completion_task(task
);
6053 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6055 if (task
->tk_status
== 0)
6056 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6057 ret
= task
->tk_status
;
6061 dprintk("<-- %s status=%d\n", __func__
, ret
);
6065 struct nfs4_reclaim_complete_data
{
6066 struct nfs_client
*clp
;
6067 struct nfs41_reclaim_complete_args arg
;
6068 struct nfs41_reclaim_complete_res res
;
6071 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6073 struct nfs4_reclaim_complete_data
*calldata
= data
;
6075 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
6076 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
6077 &calldata
->arg
.seq_args
,
6078 &calldata
->res
.seq_res
, task
))
6081 rpc_call_start(task
);
6084 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6086 switch(task
->tk_status
) {
6088 case -NFS4ERR_COMPLETE_ALREADY
:
6089 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6091 case -NFS4ERR_DELAY
:
6092 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6094 case -NFS4ERR_RETRY_UNCACHED_REP
:
6097 nfs4_schedule_lease_recovery(clp
);
6102 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6104 struct nfs4_reclaim_complete_data
*calldata
= data
;
6105 struct nfs_client
*clp
= calldata
->clp
;
6106 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6108 dprintk("--> %s\n", __func__
);
6109 if (!nfs41_sequence_done(task
, res
))
6112 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6113 rpc_restart_call_prepare(task
);
6116 dprintk("<-- %s\n", __func__
);
6119 static void nfs4_free_reclaim_complete_data(void *data
)
6121 struct nfs4_reclaim_complete_data
*calldata
= data
;
6126 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6127 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6128 .rpc_call_done
= nfs4_reclaim_complete_done
,
6129 .rpc_release
= nfs4_free_reclaim_complete_data
,
6133 * Issue a global reclaim complete.
6135 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6137 struct nfs4_reclaim_complete_data
*calldata
;
6138 struct rpc_task
*task
;
6139 struct rpc_message msg
= {
6140 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6142 struct rpc_task_setup task_setup_data
= {
6143 .rpc_client
= clp
->cl_rpcclient
,
6144 .rpc_message
= &msg
,
6145 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6146 .flags
= RPC_TASK_ASYNC
,
6148 int status
= -ENOMEM
;
6150 dprintk("--> %s\n", __func__
);
6151 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6152 if (calldata
== NULL
)
6154 calldata
->clp
= clp
;
6155 calldata
->arg
.one_fs
= 0;
6157 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6158 msg
.rpc_argp
= &calldata
->arg
;
6159 msg
.rpc_resp
= &calldata
->res
;
6160 task_setup_data
.callback_data
= calldata
;
6161 task
= rpc_run_task(&task_setup_data
);
6163 status
= PTR_ERR(task
);
6166 status
= nfs4_wait_for_completion_rpc_task(task
);
6168 status
= task
->tk_status
;
6172 dprintk("<-- %s status=%d\n", __func__
, status
);
6177 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6179 struct nfs4_layoutget
*lgp
= calldata
;
6180 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6182 dprintk("--> %s\n", __func__
);
6183 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6184 * right now covering the LAYOUTGET we are about to send.
6185 * However, that is not so catastrophic, and there seems
6186 * to be no way to prevent it completely.
6188 if (nfs4_setup_sequence(server
, &lgp
->args
.seq_args
,
6189 &lgp
->res
.seq_res
, task
))
6191 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6192 NFS_I(lgp
->args
.inode
)->layout
,
6193 lgp
->args
.ctx
->state
)) {
6194 rpc_exit(task
, NFS4_OK
);
6197 rpc_call_start(task
);
6200 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6202 struct nfs4_layoutget
*lgp
= calldata
;
6203 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6205 dprintk("--> %s\n", __func__
);
6207 if (!nfs4_sequence_done(task
, &lgp
->res
.seq_res
))
6210 switch (task
->tk_status
) {
6213 case -NFS4ERR_LAYOUTTRYLATER
:
6214 case -NFS4ERR_RECALLCONFLICT
:
6215 task
->tk_status
= -NFS4ERR_DELAY
;
6218 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6219 rpc_restart_call_prepare(task
);
6223 dprintk("<-- %s\n", __func__
);
6226 static void nfs4_layoutget_release(void *calldata
)
6228 struct nfs4_layoutget
*lgp
= calldata
;
6230 dprintk("--> %s\n", __func__
);
6231 put_nfs_open_context(lgp
->args
.ctx
);
6233 dprintk("<-- %s\n", __func__
);
6236 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6237 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6238 .rpc_call_done
= nfs4_layoutget_done
,
6239 .rpc_release
= nfs4_layoutget_release
,
6242 int nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
)
6244 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6245 struct rpc_task
*task
;
6246 struct rpc_message msg
= {
6247 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6248 .rpc_argp
= &lgp
->args
,
6249 .rpc_resp
= &lgp
->res
,
6251 struct rpc_task_setup task_setup_data
= {
6252 .rpc_client
= server
->client
,
6253 .rpc_message
= &msg
,
6254 .callback_ops
= &nfs4_layoutget_call_ops
,
6255 .callback_data
= lgp
,
6256 .flags
= RPC_TASK_ASYNC
,
6260 dprintk("--> %s\n", __func__
);
6262 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6263 lgp
->res
.seq_res
.sr_slot
= NULL
;
6264 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6265 task
= rpc_run_task(&task_setup_data
);
6267 return PTR_ERR(task
);
6268 status
= nfs4_wait_for_completion_rpc_task(task
);
6270 status
= task
->tk_status
;
6272 status
= pnfs_layout_process(lgp
);
6274 dprintk("<-- %s status=%d\n", __func__
, status
);
6279 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6281 struct nfs4_layoutreturn
*lrp
= calldata
;
6283 dprintk("--> %s\n", __func__
);
6284 if (nfs41_setup_sequence(lrp
->clp
->cl_session
, &lrp
->args
.seq_args
,
6285 &lrp
->res
.seq_res
, task
))
6287 rpc_call_start(task
);
6290 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6292 struct nfs4_layoutreturn
*lrp
= calldata
;
6293 struct nfs_server
*server
;
6294 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6296 dprintk("--> %s\n", __func__
);
6298 if (!nfs4_sequence_done(task
, &lrp
->res
.seq_res
))
6301 server
= NFS_SERVER(lrp
->args
.inode
);
6302 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6303 rpc_restart_call_prepare(task
);
6306 spin_lock(&lo
->plh_inode
->i_lock
);
6307 if (task
->tk_status
== 0) {
6308 if (lrp
->res
.lrs_present
) {
6309 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6311 BUG_ON(!list_empty(&lo
->plh_segs
));
6313 lo
->plh_block_lgets
--;
6314 spin_unlock(&lo
->plh_inode
->i_lock
);
6315 dprintk("<-- %s\n", __func__
);
6318 static void nfs4_layoutreturn_release(void *calldata
)
6320 struct nfs4_layoutreturn
*lrp
= calldata
;
6322 dprintk("--> %s\n", __func__
);
6323 put_layout_hdr(lrp
->args
.layout
);
6325 dprintk("<-- %s\n", __func__
);
6328 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6329 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6330 .rpc_call_done
= nfs4_layoutreturn_done
,
6331 .rpc_release
= nfs4_layoutreturn_release
,
6334 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6336 struct rpc_task
*task
;
6337 struct rpc_message msg
= {
6338 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6339 .rpc_argp
= &lrp
->args
,
6340 .rpc_resp
= &lrp
->res
,
6342 struct rpc_task_setup task_setup_data
= {
6343 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6344 .rpc_message
= &msg
,
6345 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6346 .callback_data
= lrp
,
6350 dprintk("--> %s\n", __func__
);
6351 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6352 task
= rpc_run_task(&task_setup_data
);
6354 return PTR_ERR(task
);
6355 status
= task
->tk_status
;
6356 dprintk("<-- %s status=%d\n", __func__
, status
);
6362 * Retrieve the list of Data Server devices from the MDS.
6364 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6365 const struct nfs_fh
*fh
,
6366 struct pnfs_devicelist
*devlist
)
6368 struct nfs4_getdevicelist_args args
= {
6370 .layoutclass
= server
->pnfs_curr_ld
->id
,
6372 struct nfs4_getdevicelist_res res
= {
6375 struct rpc_message msg
= {
6376 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6382 dprintk("--> %s\n", __func__
);
6383 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6385 dprintk("<-- %s status=%d\n", __func__
, status
);
6389 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6390 const struct nfs_fh
*fh
,
6391 struct pnfs_devicelist
*devlist
)
6393 struct nfs4_exception exception
= { };
6397 err
= nfs4_handle_exception(server
,
6398 _nfs4_getdevicelist(server
, fh
, devlist
),
6400 } while (exception
.retry
);
6402 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6403 err
, devlist
->num_devs
);
6407 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6410 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6412 struct nfs4_getdeviceinfo_args args
= {
6415 struct nfs4_getdeviceinfo_res res
= {
6418 struct rpc_message msg
= {
6419 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6425 dprintk("--> %s\n", __func__
);
6426 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6427 dprintk("<-- %s status=%d\n", __func__
, status
);
6432 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6434 struct nfs4_exception exception
= { };
6438 err
= nfs4_handle_exception(server
,
6439 _nfs4_proc_getdeviceinfo(server
, pdev
),
6441 } while (exception
.retry
);
6444 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6446 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6448 struct nfs4_layoutcommit_data
*data
= calldata
;
6449 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6451 if (nfs4_setup_sequence(server
, &data
->args
.seq_args
,
6452 &data
->res
.seq_res
, task
))
6454 rpc_call_start(task
);
6458 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6460 struct nfs4_layoutcommit_data
*data
= calldata
;
6461 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6463 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6466 switch (task
->tk_status
) { /* Just ignore these failures */
6467 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6468 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6469 case -NFS4ERR_BADLAYOUT
: /* no layout */
6470 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6471 task
->tk_status
= 0;
6474 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6478 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6479 rpc_restart_call_prepare(task
);
6485 static void nfs4_layoutcommit_release(void *calldata
)
6487 struct nfs4_layoutcommit_data
*data
= calldata
;
6488 struct pnfs_layout_segment
*lseg
, *tmp
;
6489 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
6491 pnfs_cleanup_layoutcommit(data
);
6492 /* Matched by references in pnfs_set_layoutcommit */
6493 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
6494 list_del_init(&lseg
->pls_lc_list
);
6495 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
6500 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
6501 smp_mb__after_clear_bit();
6502 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
6504 put_rpccred(data
->cred
);
6508 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6509 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6510 .rpc_call_done
= nfs4_layoutcommit_done
,
6511 .rpc_release
= nfs4_layoutcommit_release
,
6515 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6517 struct rpc_message msg
= {
6518 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6519 .rpc_argp
= &data
->args
,
6520 .rpc_resp
= &data
->res
,
6521 .rpc_cred
= data
->cred
,
6523 struct rpc_task_setup task_setup_data
= {
6524 .task
= &data
->task
,
6525 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6526 .rpc_message
= &msg
,
6527 .callback_ops
= &nfs4_layoutcommit_ops
,
6528 .callback_data
= data
,
6529 .flags
= RPC_TASK_ASYNC
,
6531 struct rpc_task
*task
;
6534 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6535 "lbw: %llu inode %lu\n",
6536 data
->task
.tk_pid
, sync
,
6537 data
->args
.lastbytewritten
,
6538 data
->args
.inode
->i_ino
);
6540 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6541 task
= rpc_run_task(&task_setup_data
);
6543 return PTR_ERR(task
);
6546 status
= nfs4_wait_for_completion_rpc_task(task
);
6549 status
= task
->tk_status
;
6551 dprintk("%s: status %d\n", __func__
, status
);
6557 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6558 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6560 struct nfs41_secinfo_no_name_args args
= {
6561 .style
= SECINFO_STYLE_CURRENT_FH
,
6563 struct nfs4_secinfo_res res
= {
6566 struct rpc_message msg
= {
6567 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6571 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6575 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6576 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6578 struct nfs4_exception exception
= { };
6581 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6584 case -NFS4ERR_WRONGSEC
:
6585 case -NFS4ERR_NOTSUPP
:
6588 err
= nfs4_handle_exception(server
, err
, &exception
);
6590 } while (exception
.retry
);
6596 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6597 struct nfs_fsinfo
*info
)
6601 rpc_authflavor_t flavor
;
6602 struct nfs4_secinfo_flavors
*flavors
;
6604 page
= alloc_page(GFP_KERNEL
);
6610 flavors
= page_address(page
);
6611 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6614 * Fall back on "guess and check" method if
6615 * the server doesn't support SECINFO_NO_NAME
6617 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6618 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6624 flavor
= nfs_find_best_sec(flavors
);
6626 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6636 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6639 struct nfs41_test_stateid_args args
= {
6642 struct nfs41_test_stateid_res res
;
6643 struct rpc_message msg
= {
6644 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6649 dprintk("NFS call test_stateid %p\n", stateid
);
6650 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6651 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
6652 if (status
!= NFS_OK
) {
6653 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6656 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6661 * nfs41_test_stateid - perform a TEST_STATEID operation
6663 * @server: server / transport on which to perform the operation
6664 * @stateid: state ID to test
6666 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6667 * Otherwise a negative NFS4ERR value is returned if the operation
6668 * failed or the state ID is not currently valid.
6670 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6672 struct nfs4_exception exception
= { };
6675 err
= _nfs41_test_stateid(server
, stateid
);
6676 if (err
!= -NFS4ERR_DELAY
)
6678 nfs4_handle_exception(server
, err
, &exception
);
6679 } while (exception
.retry
);
6683 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6685 struct nfs41_free_stateid_args args
= {
6688 struct nfs41_free_stateid_res res
;
6689 struct rpc_message msg
= {
6690 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6696 dprintk("NFS call free_stateid %p\n", stateid
);
6697 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6698 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6699 &args
.seq_args
, &res
.seq_res
, 1);
6700 dprintk("NFS reply free_stateid: %d\n", status
);
6705 * nfs41_free_stateid - perform a FREE_STATEID operation
6707 * @server: server / transport on which to perform the operation
6708 * @stateid: state ID to release
6710 * Returns NFS_OK if the server freed "stateid". Otherwise a
6711 * negative NFS4ERR value is returned.
6713 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6715 struct nfs4_exception exception
= { };
6718 err
= _nfs4_free_stateid(server
, stateid
);
6719 if (err
!= -NFS4ERR_DELAY
)
6721 nfs4_handle_exception(server
, err
, &exception
);
6722 } while (exception
.retry
);
6726 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6727 const nfs4_stateid
*s2
)
6729 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6732 if (s1
->seqid
== s2
->seqid
)
6734 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6740 #endif /* CONFIG_NFS_V4_1 */
6742 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6743 const nfs4_stateid
*s2
)
6745 return nfs4_stateid_match(s1
, s2
);
6749 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6750 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6751 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6752 .recover_open
= nfs4_open_reclaim
,
6753 .recover_lock
= nfs4_lock_reclaim
,
6754 .establish_clid
= nfs4_init_clientid
,
6755 .get_clid_cred
= nfs4_get_setclientid_cred
,
6758 #if defined(CONFIG_NFS_V4_1)
6759 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6760 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6761 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6762 .recover_open
= nfs4_open_reclaim
,
6763 .recover_lock
= nfs4_lock_reclaim
,
6764 .establish_clid
= nfs41_init_clientid
,
6765 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6766 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6768 #endif /* CONFIG_NFS_V4_1 */
6770 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6771 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6772 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6773 .recover_open
= nfs4_open_expired
,
6774 .recover_lock
= nfs4_lock_expired
,
6775 .establish_clid
= nfs4_init_clientid
,
6776 .get_clid_cred
= nfs4_get_setclientid_cred
,
6779 #if defined(CONFIG_NFS_V4_1)
6780 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6781 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6782 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6783 .recover_open
= nfs41_open_expired
,
6784 .recover_lock
= nfs41_lock_expired
,
6785 .establish_clid
= nfs41_init_clientid
,
6786 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6788 #endif /* CONFIG_NFS_V4_1 */
6790 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6791 .sched_state_renewal
= nfs4_proc_async_renew
,
6792 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6793 .renew_lease
= nfs4_proc_renew
,
6796 #if defined(CONFIG_NFS_V4_1)
6797 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6798 .sched_state_renewal
= nfs41_proc_async_sequence
,
6799 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6800 .renew_lease
= nfs4_proc_sequence
,
6804 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6806 .call_sync
= _nfs4_call_sync
,
6807 .match_stateid
= nfs4_match_stateid
,
6808 .find_root_sec
= nfs4_find_root_sec
,
6809 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6810 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6811 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6814 #if defined(CONFIG_NFS_V4_1)
6815 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6817 .call_sync
= _nfs4_call_sync_session
,
6818 .match_stateid
= nfs41_match_stateid
,
6819 .find_root_sec
= nfs41_find_root_sec
,
6820 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6821 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6822 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6826 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6827 [0] = &nfs_v4_0_minor_ops
,
6828 #if defined(CONFIG_NFS_V4_1)
6829 [1] = &nfs_v4_1_minor_ops
,
6833 const struct inode_operations nfs4_dir_inode_operations
= {
6834 .create
= nfs_create
,
6835 .lookup
= nfs_lookup
,
6836 .atomic_open
= nfs_atomic_open
,
6838 .unlink
= nfs_unlink
,
6839 .symlink
= nfs_symlink
,
6843 .rename
= nfs_rename
,
6844 .permission
= nfs_permission
,
6845 .getattr
= nfs_getattr
,
6846 .setattr
= nfs_setattr
,
6847 .getxattr
= generic_getxattr
,
6848 .setxattr
= generic_setxattr
,
6849 .listxattr
= generic_listxattr
,
6850 .removexattr
= generic_removexattr
,
6853 static const struct inode_operations nfs4_file_inode_operations
= {
6854 .permission
= nfs_permission
,
6855 .getattr
= nfs_getattr
,
6856 .setattr
= nfs_setattr
,
6857 .getxattr
= generic_getxattr
,
6858 .setxattr
= generic_setxattr
,
6859 .listxattr
= generic_listxattr
,
6860 .removexattr
= generic_removexattr
,
6863 const struct nfs_rpc_ops nfs_v4_clientops
= {
6864 .version
= 4, /* protocol version */
6865 .dentry_ops
= &nfs4_dentry_operations
,
6866 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6867 .file_inode_ops
= &nfs4_file_inode_operations
,
6868 .file_ops
= &nfs4_file_operations
,
6869 .getroot
= nfs4_proc_get_root
,
6870 .submount
= nfs4_submount
,
6871 .try_mount
= nfs4_try_mount
,
6872 .getattr
= nfs4_proc_getattr
,
6873 .setattr
= nfs4_proc_setattr
,
6874 .lookup
= nfs4_proc_lookup
,
6875 .access
= nfs4_proc_access
,
6876 .readlink
= nfs4_proc_readlink
,
6877 .create
= nfs4_proc_create
,
6878 .remove
= nfs4_proc_remove
,
6879 .unlink_setup
= nfs4_proc_unlink_setup
,
6880 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
6881 .unlink_done
= nfs4_proc_unlink_done
,
6882 .rename
= nfs4_proc_rename
,
6883 .rename_setup
= nfs4_proc_rename_setup
,
6884 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
6885 .rename_done
= nfs4_proc_rename_done
,
6886 .link
= nfs4_proc_link
,
6887 .symlink
= nfs4_proc_symlink
,
6888 .mkdir
= nfs4_proc_mkdir
,
6889 .rmdir
= nfs4_proc_remove
,
6890 .readdir
= nfs4_proc_readdir
,
6891 .mknod
= nfs4_proc_mknod
,
6892 .statfs
= nfs4_proc_statfs
,
6893 .fsinfo
= nfs4_proc_fsinfo
,
6894 .pathconf
= nfs4_proc_pathconf
,
6895 .set_capabilities
= nfs4_server_capabilities
,
6896 .decode_dirent
= nfs4_decode_dirent
,
6897 .read_setup
= nfs4_proc_read_setup
,
6898 .read_pageio_init
= pnfs_pageio_init_read
,
6899 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
6900 .read_done
= nfs4_read_done
,
6901 .write_setup
= nfs4_proc_write_setup
,
6902 .write_pageio_init
= pnfs_pageio_init_write
,
6903 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
6904 .write_done
= nfs4_write_done
,
6905 .commit_setup
= nfs4_proc_commit_setup
,
6906 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
6907 .commit_done
= nfs4_commit_done
,
6908 .lock
= nfs4_proc_lock
,
6909 .clear_acl_cache
= nfs4_zap_acl_attr
,
6910 .close_context
= nfs4_close_context
,
6911 .open_context
= nfs4_atomic_open
,
6912 .have_delegation
= nfs4_have_delegation
,
6913 .return_delegation
= nfs4_inode_return_delegation
,
6914 .alloc_client
= nfs4_alloc_client
,
6915 .init_client
= nfs4_init_client
,
6916 .free_client
= nfs4_free_client
,
6917 .create_server
= nfs4_create_server
,
6918 .clone_server
= nfs_clone_server
,
6921 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6922 .prefix
= XATTR_NAME_NFSV4_ACL
,
6923 .list
= nfs4_xattr_list_nfs4_acl
,
6924 .get
= nfs4_xattr_get_nfs4_acl
,
6925 .set
= nfs4_xattr_set_nfs4_acl
,
6928 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6929 &nfs4_xattr_nfs4_acl_handler
,